/* roulang page: index */
:root {
            --sd-primary: #0B5FFF;
            --sd-primary-dark: #0848C8;
            --sd-accent: #FF3D2E;
            --sd-neon: #C6F135;
            --sd-bg: #F5F7FA;
            --sd-dark: #0B1B2B;
            --sd-dark-2: #112A3E;
            --sd-card: #FFFFFF;
            --sd-text: #0B1B2B;
            --sd-text-weak: #5A6B7D;
            --sd-text-muted: #8896A6;
            --sd-line: #E3E8EF;
            --sd-radius-sm: 8px;
            --sd-radius-md: 14px;
            --sd-radius-lg: 22px;
            --sd-shadow-card: 0 8px 24px rgba(11, 27, 43, 0.06);
            --sd-shadow-hover: 0 16px 40px rgba(13, 91, 255, 0.16);
            --sd-font: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, sans-serif;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--sd-font);
            background-color: var(--sd-bg);
            color: var(--sd-text);
            line-height: 1.85;
            margin: 0;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: var(--sd-primary);
            text-decoration: none;
            transition: color 0.2s ease;
        }

        a:hover {
            color: var(--sd-primary-dark);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        .sd-container {
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 28px;
            padding-right: 28px;
        }

        .sd-section {
            padding: 88px 0;
            position: relative;
        }

        .sd-section-tight {
            padding: 56px 0;
        }

        .sd-bg-white {
            background: var(--sd-card);
        }

        .sd-bg-dark {
            background: var(--sd-dark);
            color: #fff;
        }

        .sd-bg-dark .sd-section-title {
            color: #fff;
        }

        .sd-bg-dark .sd-text-weak {
            color: rgba(255, 255, 255, 0.72);
        }

        .sd-bg-soft {
            background: var(--sd-bg);
        }

        .sd-section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--sd-primary);
            background: rgba(11, 91, 255, 0.07);
            padding: 6px 14px;
            border-radius: 999px;
            margin-bottom: 18px;
        }

        .sd-section-title {
            font-size: 28px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--sd-text);
            margin: 0 0 14px;
        }

        .sd-lead {
            font-size: 17px;
            color: var(--sd-text-weak);
            line-height: 1.85;
            max-width: 720px;
        }

        .sd-text-weak {
            color: var(--sd-text-weak);
        }

        .sd-text-muted {
            color: var(--sd-text-muted);
            font-size: 14px;
        }

        .sd-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            border-radius: var(--sd-radius-md);
            padding: 13px 26px;
            font-size: 15px;
            line-height: 1.2;
            transition: all 0.2s ease;
            border: none;
            cursor: pointer;
            min-height: 44px;
            text-align: center;
        }

        .sd-btn:focus-visible {
            outline: 2px solid var(--sd-primary);
            outline-offset: 2px;
        }

        .sd-btn-primary {
            background: var(--sd-primary);
            color: #fff;
        }

        .sd-btn-primary:hover {
            background: var(--sd-primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 10px 24px rgba(11, 91, 255, 0.32);
        }

        .sd-btn-primary:active {
            transform: translateY(0);
            box-shadow: none;
        }

        .sd-btn-outline-light {
            background: transparent;
            color: #fff;
            border: 1.5px solid rgba(255, 255, 255, 0.5);
        }

        .sd-btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
            transform: translateY(-2px);
        }

        .sd-btn-outline {
            background: transparent;
            color: var(--sd-text);
            border: 1.5px solid var(--sd-line);
        }

        .sd-btn-outline:hover {
            background: var(--sd-bg);
            border-color: var(--sd-primary);
            color: var(--sd-primary);
            transform: translateY(-2px);
        }

        .sd-btn-accent {
            background: var(--sd-accent);
            color: #fff;
        }

        .sd-btn-accent:hover {
            background: #d92b1d;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 10px 24px rgba(255, 61, 46, 0.3);
        }

        .sd-btn-sm {
            padding: 9px 18px;
            font-size: 13px;
            min-height: 38px;
        }

        .sd-chip {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 500;
            border-radius: 999px;
            padding: 7px 16px;
            font-size: 13px;
            background: var(--sd-bg);
            color: var(--sd-text);
            border: 1px solid var(--sd-line);
            transition: all 0.2s ease;
            white-space: nowrap;
        }

        .sd-chip:hover {
            border-color: var(--sd-primary);
            background: rgba(11, 91, 255, 0.06);
            color: var(--sd-primary);
        }

        .sd-chip.active {
            background: var(--sd-primary);
            color: #fff;
            border-color: var(--sd-primary);
        }

        .sd-card {
            background: var(--sd-card);
            border: 1px solid var(--sd-line);
            border-radius: var(--sd-radius-md);
            box-shadow: var(--sd-shadow-card);
            transition: all 0.3s ease;
            overflow: hidden;
        }

        .sd-card:hover {
            box-shadow: var(--sd-shadow-hover);
            transform: translateY(-3px);
        }

        .sd-card-body {
            padding: 22px;
        }

        .sd-badge {
            display: inline-block;
            padding: 4px 12px;
            font-size: 12px;
            font-weight: 600;
            border-radius: 999px;
            background: rgba(11, 91, 255, 0.08);
            color: var(--sd-primary);
            letter-spacing: 0.03em;
        }

        .sd-badge-accent {
            background: rgba(255, 61, 46, 0.1);
            color: var(--sd-accent);
        }

        .sd-badge-green {
            background: rgba(198, 241, 53, 0.18);
            color: #6B8F0D;
        }

        .sd-divider {
            border: none;
            border-top: 1px solid var(--sd-line);
            margin: 22px 0;
        }

        .sd-icon-box {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 52px;
            height: 52px;
            border-radius: var(--sd-radius-md);
            background: rgba(11, 91, 255, 0.08);
            color: var(--sd-primary);
            font-size: 22px;
            flex-shrink: 0;
        }

        .sd-icon-box-dark {
            background: rgba(255, 255, 255, 0.08);
            color: var(--sd-neon);
        }

        .sd-form-input {
            width: 100%;
            padding: 13px 18px;
            font-size: 15px;
            border: 1.5px solid var(--sd-line);
            border-radius: var(--sd-radius-md);
            background: #fff;
            color: var(--sd-text);
            transition: all 0.2s ease;
            font-family: var(--sd-font);
            min-height: 48px;
        }

        .sd-form-input:focus {
            outline: none;
            border-color: var(--sd-primary);
            box-shadow: 0 0 0 4px rgba(11, 91, 255, 0.12);
        }

        .sd-form-input::placeholder {
            color: var(--sd-text-muted);
        }

        /* Header / Navigation */
        .sd-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.94);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--sd-line);
            padding: 0;
        }

        .sd-header-inner {
            display: flex;
            align-items: center;
            gap: 20px;
            padding: 12px 28px;
            max-width: 1200px;
            margin: 0 auto;
        }

        .sd-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 20px;
            color: var(--sd-text);
            white-space: nowrap;
            letter-spacing: -0.01em;
        }

        .sd-logo .sd-logo-mark {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--sd-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 17px;
            flex-shrink: 0;
        }

        .sd-logo:hover {
            color: var(--sd-text);
        }

        .sd-header-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
            flex: 1;
        }

        .sd-header-nav .sd-chip {
            background: var(--sd-bg);
        }

        .sd-header-nav .sd-chip.active {
            background: var(--sd-primary);
        }

        .sd-header-cta {
            white-space: nowrap;
        }

        .sd-mobile-toggle {
            display: none;
            background: var(--sd-bg);
            border: 1px solid var(--sd-line);
            border-radius: var(--sd-radius-sm);
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            color: var(--sd-text);
            font-size: 20px;
            cursor: pointer;
            transition: all 0.2s ease;
        }

        .sd-mobile-toggle:hover {
            background: rgba(11, 91, 255, 0.08);
            border-color: var(--sd-primary);
            color: var(--sd-primary);
        }

        .sd-mobile-menu {
            display: none;
            padding: 14px 28px 20px;
            border-top: 1px solid var(--sd-line);
            background: #fff;
            flex-direction: column;
            gap: 8px;
        }

        .sd-mobile-menu .sd-chip {
            width: 100%;
            justify-content: center;
            padding: 10px 16px;
            font-size: 14px;
        }

        /* Hero */
        .sd-hero {
            position: relative;
            min-height: 85vh;
            display: flex;
            align-items: center;
            padding: 80px 0 90px;
            background: var(--sd-dark);
            background-image: url('/assets/images/23f35a53466b9bc9.webp');
            background-size: cover;
            background-position: center;
            color: #fff;
        }

        .sd-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(11, 27, 43, 0.92) 0%, rgba(11, 27, 43, 0.68) 45%, rgba(11, 91, 255, 0.42) 100%);
            z-index: 1;
        }

        .sd-hero .sd-container {
            position: relative;
            z-index: 2;
            width: 100%;
        }

        .sd-hero-content {
            max-width: 680px;
        }

        .sd-hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            background: rgba(198, 241, 53, 0.18);
            color: var(--sd-neon);
            font-size: 13px;
            font-weight: 600;
            padding: 7px 16px;
            border-radius: 999px;
            margin-bottom: 22px;
            letter-spacing: 0.04em;
            border: 1px solid rgba(198, 241, 53, 0.25);
        }

        .sd-hero-title {
            font-size: 42px;
            font-weight: 700;
            line-height: 1.18;
            margin: 0 0 18px;
            letter-spacing: -0.02em;
            color: #fff;
        }

        .sd-hero-subtitle {
            font-size: 17px;
            line-height: 1.85;
            color: rgba(255, 255, 255, 0.82);
            margin-bottom: 30px;
            max-width: 600px;
        }

        .sd-hero-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            margin-bottom: 30px;
        }

        .sd-hero-chips {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }

        .sd-hero-chips .sd-chip {
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            border-color: rgba(255, 255, 255, 0.24);
            backdrop-filter: blur(4px);
        }

        .sd-hero-chips .sd-chip:hover {
            background: rgba(255, 255, 255, 0.18);
            border-color: var(--sd-neon);
            color: var(--sd-neon);
        }

        .sd-hero-chips .sd-chip.active {
            background: var(--sd-primary);
            border-color: var(--sd-primary);
            color: #fff;
        }

        /* Pain Points */
        .sd-pain-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-top: 38px;
        }

        .sd-pain-card {
            display: flex;
            gap: 18px;
            align-items: flex-start;
        }

        .sd-pain-card .sd-pain-num {
            font-size: 36px;
            font-weight: 700;
            color: var(--sd-accent);
            line-height: 1;
            flex-shrink: 0;
            width: 44px;
        }

        .sd-pain-card h3 {
            font-size: 18px;
            font-weight: 600;
            margin: 0 0 6px;
            color: var(--sd-text);
        }

        .sd-pain-card p {
            margin: 0;
            color: var(--sd-text-weak);
            font-size: 14px;
            line-height: 1.75;
        }

        /* Solution */
        .sd-solution-wrap {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 40px;
            align-items: center;
            margin-top: 40px;
        }

        .sd-solution-text h3 {
            font-size: 22px;
            font-weight: 700;
            margin: 0 0 14px;
        }

        .sd-solution-text p {
            color: var(--sd-text-weak);
            margin-bottom: 18px;
            line-height: 1.85;
        }

        .sd-solution-img {
            border-radius: var(--sd-radius-lg);
            overflow: hidden;
            box-shadow: var(--sd-shadow-card);
        }

        .sd-solution-img img {
            width: 100%;
            height: 300px;
            object-fit: cover;
        }

        /* Steps */
        .sd-steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 40px;
        }

        .sd-step-card {
            text-align: left;
            padding: 26px 22px;
            background: var(--sd-card);
            border: 1px solid var(--sd-line);
            border-radius: var(--sd-radius-md);
            box-shadow: var(--sd-shadow-card);
            transition: all 0.3s ease;
        }

        .sd-step-card:hover {
            box-shadow: var(--sd-shadow-hover);
            transform: translateY(-3px);
        }

        .sd-step-num {
            font-size: 40px;
            font-weight: 700;
            color: var(--sd-primary);
            line-height: 1;
            margin-bottom: 12px;
            opacity: 0.9;
        }

        .sd-step-card h3 {
            font-size: 18px;
            font-weight: 600;
            margin: 0 0 8px;
        }

        .sd-step-card p {
            margin: 0;
            color: var(--sd-text-weak);
            font-size: 14px;
            line-height: 1.75;
        }

        /* Stats */
        .sd-stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 18px;
            margin-top: 40px;
        }

        .sd-stat {
            text-align: center;
            padding: 30px 18px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: var(--sd-radius-md);
            border: 1px solid rgba(255, 255, 255, 0.1);
            transition: all 0.25s ease;
        }

        .sd-stat:hover {
            background: rgba(255, 255, 255, 0.1);
        }

        .sd-stat-num {
            font-size: 38px;
            font-weight: 700;
            color: var(--sd-neon);
            line-height: 1.2;
            margin-bottom: 6px;
        }

        .sd-stat-label {
            color: rgba(255, 255, 255, 0.7);
            font-size: 14px;
        }

        /* Testimonials */
        .sd-testimonials-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-top: 40px;
        }

        .sd-testimonial-card {
            background: var(--sd-card);
            border: 1px solid var(--sd-line);
            border-radius: var(--sd-radius-md);
            padding: 26px;
            box-shadow: var(--sd-shadow-card);
            transition: all 0.3s ease;
        }

        .sd-testimonial-card:hover {
            box-shadow: var(--sd-shadow-hover);
            transform: translateY(-3px);
        }

        .sd-testimonial-user {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 14px;
        }

        .sd-testimonial-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--sd-primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 600;
            font-size: 18px;
            flex-shrink: 0;
        }

        .sd-testimonial-user h4 {
            font-size: 15px;
            font-weight: 600;
            margin: 0;
        }

        .sd-testimonial-user span {
            font-size: 12px;
            color: var(--sd-text-muted);
        }

        .sd-testimonial-card p {
            margin: 0;
            color: var(--sd-text-weak);
            font-size: 14px;
            line-height: 1.8;
        }

        /* Scenarios */
        .sd-scenario-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 14px;
            margin-top: 40px;
        }

        .sd-scenario-card {
            background: var(--sd-card);
            border: 1px solid var(--sd-line);
            border-radius: var(--sd-radius-md);
            padding: 22px 16px;
            text-align: center;
            box-shadow: var(--sd-shadow-card);
            transition: all 0.3s ease;
        }

        .sd-scenario-card:hover {
            box-shadow: var(--sd-shadow-hover);
            transform: translateY(-3px);
            border-color: var(--sd-primary);
        }

        .sd-scenario-card .sd-icon-box {
            margin: 0 auto 12px;
        }

        .sd-scenario-card h3 {
            font-size: 15px;
            font-weight: 600;
            margin: 0 0 5px;
        }

        .sd-scenario-card p {
            font-size: 13px;
            color: var(--sd-text-muted);
            margin: 0;
            line-height: 1.6;
        }

        /* News */
        .sd-news-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 18px;
            margin-top: 40px;
        }

        .sd-news-card {
            display: flex;
            gap: 16px;
            background: var(--sd-card);
            border: 1px solid var(--sd-line);
            border-radius: var(--sd-radius-md);
            padding: 18px;
            box-shadow: var(--sd-shadow-card);
            transition: all 0.3s ease;
        }

        .sd-news-card:hover {
            box-shadow: var(--sd-shadow-hover);
            transform: translateY(-3px);
        }

        .sd-news-date {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            min-width: 58px;
            height: 62px;
            background: var(--sd-bg);
            border-radius: var(--sd-radius-sm);
            flex-shrink: 0;
        }

        .sd-news-date .sd-date-day {
            font-size: 22px;
            font-weight: 700;
            color: var(--sd-primary);
            line-height: 1;
        }

        .sd-news-date .sd-date-month {
            font-size: 11px;
            color: var(--sd-text-muted);
            font-weight: 500;
        }

        .sd-news-content h3 {
            font-size: 16px;
            font-weight: 600;
            margin: 0 0 6px;
            line-height: 1.5;
        }

        .sd-news-content p {
            font-size: 14px;
            color: var(--sd-text-weak);
            margin: 0 0 10px;
            line-height: 1.7;
        }

        .sd-news-link {
            font-size: 13px;
            font-weight: 600;
            color: var(--sd-primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: all 0.2s ease;
        }

        .sd-news-link:hover {
            gap: 8px;
            color: var(--sd-primary-dark);
        }

        /* Real-time data */
        .sd-realtime-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            margin-top: 40px;
        }

        .sd-realtime-panel {
            background: var(--sd-card);
            border: 1px solid var(--sd-line);
            border-radius: var(--sd-radius-md);
            padding: 24px;
            box-shadow: var(--sd-shadow-card);
        }

        .sd-realtime-panel h3 {
            font-size: 17px;
            font-weight: 600;
            margin: 0 0 16px;
        }

        .sd-progress-row {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 14px;
        }

        .sd-progress-row:last-child {
            margin-bottom: 0;
        }

        .sd-progress-label {
            min-width: 80px;
            font-size: 13px;
            font-weight: 500;
            color: var(--sd-text);
        }

        .sd-progress-track {
            flex: 1;
            height: 10px;
            background: var(--sd-bg);
            border-radius: 999px;
            overflow: hidden;
        }

        .sd-progress-bar {
            height: 100%;
            border-radius: 999px;
            background: var(--sd-primary);
            transition: width 0.3s ease;
        }

        .sd-progress-bar-accent {
            background: var(--sd-accent);
        }

        .sd-progress-bar-green {
            background: #8ABD1F;
        }

        .sd-progress-num {
            min-width: 38px;
            text-align: right;
            font-size: 13px;
            font-weight: 600;
            color: var(--sd-text-weak);
        }

        /* Special topics */
        .sd-topics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 18px;
            margin-top: 40px;
        }

        .sd-topic-card {
            position: relative;
            border-radius: var(--sd-radius-md);
            overflow: hidden;
            box-shadow: var(--sd-shadow-card);
            transition: all 0.3s ease;
            aspect-ratio: 4 / 3;
        }

        .sd-topic-card:hover {
            box-shadow: var(--sd-shadow-hover);
            transform: translateY(-4px);
        }

        .sd-topic-card img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .sd-topic-card:hover img {
            transform: scale(1.04);
        }

        .sd-topic-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(11, 27, 43, 0.88) 0%, rgba(11, 27, 43, 0.1) 55%);
            display: flex;
            align-items: flex-end;
            padding: 18px;
        }

        .sd-topic-overlay h3 {
            margin: 0;
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            line-height: 1.4;
        }

        /* Brand intro */
        .sd-brand-intro {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 40px;
            align-items: center;
        }

        .sd-brand-intro .sd-brand-img {
            border-radius: var(--sd-radius-lg);
            overflow: hidden;
            box-shadow: var(--sd-shadow-card);
        }

        .sd-brand-intro .sd-brand-img img {
            width: 100%;
            height: 320px;
            object-fit: cover;
        }

        .sd-brand-intro h3 {
            font-size: 23px;
            font-weight: 700;
            margin: 0 0 16px;
        }

        .sd-brand-intro p {
            color: var(--sd-text-weak);
            line-height: 1.9;
            margin-bottom: 14px;
        }

        /* Scene extension */
        .sd-scene-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 18px;
            margin-top: 40px;
        }

        .sd-scene-card {
            background: var(--sd-card);
            border: 1px solid var(--sd-line);
            border-radius: var(--sd-radius-md);
            overflow: hidden;
            box-shadow: var(--sd-shadow-card);
            transition: all 0.3s ease;
        }

        .sd-scene-card:hover {
            box-shadow: var(--sd-shadow-hover);
            transform: translateY(-3px);
        }

        .sd-scene-card img {
            width: 100%;
            height: 180px;
            object-fit: cover;
        }

        .sd-scene-card .sd-card-body {
            padding: 18px;
        }

        .sd-scene-card h3 {
            font-size: 16px;
            font-weight: 600;
            margin: 0 0 6px;
        }

        .sd-scene-card p {
            font-size: 14px;
            color: var(--sd-text-weak);
            margin: 0;
            line-height: 1.7;
        }

        /* Tools */
        .sd-tools-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 18px;
            margin-top: 40px;
        }

        .sd-tool-card {
            background: var(--sd-card);
            border: 1px solid var(--sd-line);
            border-radius: var(--sd-radius-md);
            padding: 22px;
            text-align: center;
            box-shadow: var(--sd-shadow-card);
            transition: all 0.3s ease;
        }

        .sd-tool-card:hover {
            box-shadow: var(--sd-shadow-hover);
            transform: translateY(-3px);
            border-color: var(--sd-primary);
        }

        .sd-tool-card .sd-icon-box {
            margin: 0 auto 12px;
        }

        .sd-tool-card h3 {
            font-size: 15px;
            font-weight: 600;
            margin: 0 0 5px;
        }

        .sd-tool-card p {
            font-size: 13px;
            color: var(--sd-text-muted);
            margin: 0;
            line-height: 1.6;
        }

        /* FAQ */
        .sd-faq-wrap {
            max-width: 780px;
            margin: 40px auto 0;
        }

        .sd-faq-item {
            background: var(--sd-card);
            border: 1px solid var(--sd-line);
            border-radius: var(--sd-radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all 0.2s ease;
        }

        .sd-faq-item:hover {
            border-color: var(--sd-primary);
        }

        .sd-faq-item details {
            cursor: pointer;
        }

        .sd-faq-item summary {
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 20px;
            font-weight: 600;
            font-size: 15px;
            color: var(--sd-text);
            cursor: pointer;
            transition: all 0.2s ease;
        }

        .sd-faq-item summary::-webkit-details-marker {
            display: none;
        }

        .sd-faq-item summary::after {
            content: '+';
            font-size: 22px;
            font-weight: 400;
            color: var(--sd-text-muted);
            transition: all 0.25s ease;
            flex-shrink: 0;
            margin-left: 12px;
        }

        .sd-faq-item details[open] summary::after {
            content: '−';
            color: var(--sd-primary);
        }

        .sd-faq-item details[open] summary {
            color: var(--sd-primary);
        }

        .sd-faq-answer {
            padding: 0 20px 18px;
            font-size: 14px;
            color: var(--sd-text-weak);
            line-height: 1.8;
        }

        /* Bottom CTA */
        .sd-cta-bottom {
            background: var(--sd-dark);
            border-radius: var(--sd-radius-lg);
            padding: 60px 48px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .sd-cta-bottom::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle at 30% 20%, rgba(11, 91, 255, 0.35) 0%, transparent 60%);
            pointer-events: none;
        }

        .sd-cta-bottom .sd-section-label {
            background: rgba(198, 241, 53, 0.16);
            color: var(--sd-neon);
            border: 1px solid rgba(198, 241, 53, 0.3);
        }

        .sd-cta-bottom h2 {
            font-size: 28px;
            font-weight: 700;
            margin: 0 0 12px;
            color: #fff;
            position: relative;
            z-index: 1;
        }

        .sd-cta-bottom p {
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 28px;
            position: relative;
            z-index: 1;
            font-size: 16px;
        }

        .sd-cta-bottom .sd-cta-form {
            display: flex;
            gap: 10px;
            justify-content: center;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
            max-width: 480px;
            margin: 0 auto;
        }

        .sd-cta-bottom .sd-form-input {
            flex: 1;
            min-width: 240px;
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.22);
            color: #fff;
        }

        .sd-cta-bottom .sd-form-input::placeholder {
            color: rgba(255, 255, 255, 0.5);
        }

        .sd-cta-bottom .sd-form-input:focus {
            background: rgba(255, 255, 255, 0.14);
            border-color: var(--sd-neon);
            box-shadow: 0 0 0 4px rgba(198, 241, 53, 0.18);
        }

        /* Partners strip */
        .sd-partners {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: center;
            gap: 26px;
            padding: 26px 0;
        }

        .sd-partner-logo {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 10px 22px;
            background: var(--sd-card);
            border: 1px solid var(--sd-line);
            border-radius: var(--sd-radius-sm);
            font-weight: 600;
            font-size: 13px;
            color: var(--sd-text-muted);
            letter-spacing: 0.04em;
            transition: all 0.2s ease;
        }

        .sd-partner-logo:hover {
            border-color: var(--sd-primary);
            color: var(--sd-primary);
        }

        /* Footer */
        .sd-footer {
            background: var(--sd-dark);
            color: rgba(255, 255, 255, 0.72);
            padding: 50px 0 30px;
        }

        .sd-footer-top {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .sd-footer-brand h3 {
            color: #fff;
            font-size: 20px;
            font-weight: 700;
            margin: 0 0 10px;
        }

        .sd-footer-brand p {
            font-size: 13px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.55);
            margin: 0;
        }

        .sd-footer-col h4 {
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            margin: 0 0 14px;
            letter-spacing: 0.03em;
        }

        .sd-footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .sd-footer-col li {
            margin-bottom: 8px;
        }

        .sd-footer-col a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 13px;
            transition: color 0.2s ease;
        }

        .sd-footer-col a:hover {
            color: var(--sd-neon);
        }

        .sd-footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            padding-top: 22px;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.45);
        }

        .sd-footer-bottom .sd-footer-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .sd-footer-bottom a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 12px;
            transition: color 0.2s ease;
        }

        .sd-footer-bottom a:hover {
            color: #fff;
        }

        .sd-footer-sep {
            color: rgba(255, 255, 255, 0.3);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .sd-container {
                padding-left: 20px;
                padding-right: 20px;
            }
            .sd-header-inner {
                padding-left: 20px;
                padding-right: 20px;
                gap: 14px;
            }
            .sd-hero-title {
                font-size: 34px;
            }
            .sd-stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .sd-scenario-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .sd-tools-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .sd-topics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .sd-footer-top {
                grid-template-columns: 1.5fr 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .sd-section {
                padding: 56px 0;
            }
            .sd-header-inner {
                flex-wrap: wrap;
                gap: 10px;
            }
            .sd-header-nav {
                display: none;
            }
            .sd-mobile-toggle {
                display: flex;
            }
            .sd-mobile-menu.show {
                display: flex;
            }
            .sd-header-cta {
                margin-left: auto;
            }
            .sd-hero {
                min-height: auto;
                padding: 60px 0 70px;
            }
            .sd-hero-title {
                font-size: 28px;
            }
            .sd-hero-subtitle {
                font-size: 15px;
            }
            .sd-pain-grid {
                grid-template-columns: 1fr;
            }
            .sd-solution-wrap {
                grid-template-columns: 1fr;
            }
            .sd-steps-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .sd-testimonials-grid {
                grid-template-columns: 1fr;
            }
            .sd-scenario-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 10px;
            }
            .sd-news-grid {
                grid-template-columns: 1fr;
            }
            .sd-realtime-grid {
                grid-template-columns: 1fr;
            }
            .sd-brand-intro {
                grid-template-columns: 1fr;
            }
            .sd-scene-grid {
                grid-template-columns: 1fr;
            }
            .sd-tools-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .sd-topics-grid {
                grid-template-columns: 1fr;
            }
            .sd-cta-bottom {
                padding: 40px 22px;
            }
            .sd-cta-bottom h2 {
                font-size: 23px;
            }
            .sd-footer-top {
                grid-template-columns: 1fr 1fr;
                gap: 26px;
            }
            .sd-footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .sd-container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .sd-hero-title {
                font-size: 24px;
            }
            .sd-steps-grid {
                grid-template-columns: 1fr;
            }
            .sd-scenario-grid {
                grid-template-columns: 1fr;
            }
            .sd-tools-grid {
                grid-template-columns: 1fr;
            }
            .sd-footer-top {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .sd-btn {
                padding: 11px 20px;
                font-size: 14px;
            }
            .sd-hero-actions {
                flex-direction: column;
            }
            .sd-hero-actions .sd-btn {
                width: 100%;
            }
        }

/* roulang page: category2 */
:root {
            --sd-primary: #0B5FFF;
            --sd-primary-dark: #0848C8;
            --sd-accent: #FF3D2E;
            --sd-neon: #C6F135;
            --sd-bg: #F5F7FA;
            --sd-dark: #0B1B2B;
            --sd-dark-2: #112A3E;
            --sd-card: #FFFFFF;
            --sd-text: #0B1B2B;
            --sd-text-weak: #5A6B7D;
            --sd-text-muted: #8896A6;
            --sd-line: #E3E8EF;
            --sd-radius-sm: 8px;
            --sd-radius-md: 14px;
            --sd-radius-lg: 22px;
            --sd-shadow-card: 0 8px 24px rgba(11, 27, 43, 0.06);
            --sd-shadow-hover: 0 16px 40px rgba(13, 91, 255, 0.16);
            --sd-font: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, sans-serif;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--sd-font);
            background-color: var(--sd-bg);
            color: var(--sd-text);
            line-height: 1.85;
            margin: 0;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--sd-primary);
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: var(--sd-primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .sd-container {
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 28px;
            padding-right: 28px;
        }
        .sd-section {
            padding: 72px 0;
            position: relative;
        }
        .sd-section-tight {
            padding: 48px 0;
        }
        .sd-bg-dark {
            background: var(--sd-dark);
            color: #fff;
        }
        .sd-bg-dark .sd-section-title {
            color: #fff;
        }
        .sd-bg-dark .sd-text-weak {
            color: rgba(255, 255, 255, 0.72);
        }
        .sd-section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--sd-primary);
            background: rgba(11, 91, 255, 0.07);
            padding: 6px 14px;
            border-radius: 999px;
            margin-bottom: 18px;
        }
        .sd-section-title {
            font-size: 26px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--sd-text);
            margin: 0 0 14px;
        }
        .sd-lead {
            font-size: 16px;
            color: var(--sd-text-weak);
            line-height: 1.85;
            max-width: 720px;
        }
        .sd-text-weak {
            color: var(--sd-text-weak);
        }
        .sd-text-muted {
            color: var(--sd-text-muted);
            font-size: 14px;
        }
        .sd-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            border-radius: var(--sd-radius-md);
            padding: 13px 26px;
            font-size: 15px;
            line-height: 1.2;
            transition: all 0.2s ease;
            border: none;
            cursor: pointer;
            min-height: 44px;
            text-align: center;
        }
        .sd-btn:focus-visible {
            outline: 2px solid var(--sd-primary);
            outline-offset: 2px;
        }
        .sd-btn-primary {
            background: var(--sd-primary);
            color: #fff;
        }
        .sd-btn-primary:hover {
            background: var(--sd-primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 10px 24px rgba(11, 91, 255, 0.32);
        }
        .sd-btn-primary:active {
            transform: translateY(0);
            box-shadow: none;
        }
        .sd-btn-outline-light {
            background: transparent;
            color: #fff;
            border: 1.5px solid rgba(255, 255, 255, 0.5);
        }
        .sd-btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
            transform: translateY(-2px);
        }
        .sd-btn-outline {
            background: transparent;
            color: var(--sd-text);
            border: 1.5px solid var(--sd-line);
        }
        .sd-btn-outline:hover {
            background: var(--sd-bg);
            border-color: var(--sd-primary);
            color: var(--sd-primary);
            transform: translateY(-2px);
        }
        .sd-btn-accent {
            background: var(--sd-accent);
            color: #fff;
        }
        .sd-btn-accent:hover {
            background: #d92b1d;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 10px 24px rgba(255, 61, 46, 0.3);
        }
        .sd-btn-sm {
            padding: 9px 18px;
            font-size: 13px;
            min-height: 38px;
        }
        .sd-chip {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 500;
            border-radius: 999px;
            padding: 7px 16px;
            font-size: 13px;
            background: var(--sd-bg);
            color: var(--sd-text);
            border: 1px solid var(--sd-line);
            transition: all 0.2s ease;
            white-space: nowrap;
        }
        .sd-chip:hover {
            border-color: var(--sd-primary);
            background: rgba(11, 91, 255, 0.06);
            color: var(--sd-primary);
        }
        .sd-chip.active {
            background: var(--sd-primary);
            color: #fff;
            border-color: var(--sd-primary);
        }
        .sd-card {
            background: var(--sd-card);
            border: 1px solid var(--sd-line);
            border-radius: var(--sd-radius-md);
            box-shadow: var(--sd-shadow-card);
            transition: all 0.3s ease;
            overflow: hidden;
        }
        .sd-card:hover {
            box-shadow: var(--sd-shadow-hover);
            transform: translateY(-3px);
        }
        .sd-card-body {
            padding: 20px;
        }
        .sd-badge {
            display: inline-block;
            padding: 4px 12px;
            font-size: 12px;
            font-weight: 600;
            border-radius: 999px;
            background: rgba(11, 91, 255, 0.1);
            color: var(--sd-primary);
        }
        .sd-badge-accent {
            background: rgba(255, 61, 46, 0.1);
            color: var(--sd-accent);
        }
        .sd-badge-neon {
            background: rgba(198, 241, 53, 0.2);
            color: #3d5a00;
        }
        .sd-img-cover {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
        }
        .sd-header {
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--sd-line);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .sd-header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 14px 28px;
            flex-wrap: wrap;
        }
        .sd-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--sd-text);
            white-space: nowrap;
        }
        .sd-logo i {
            color: var(--sd-primary);
            font-size: 24px;
        }
        .sd-header-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .sd-header-cta {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .sd-mobile-toggle {
            display: none;
            background: none;
            border: 1px solid var(--sd-line);
            border-radius: var(--sd-radius-sm);
            padding: 8px 12px;
            font-size: 18px;
            color: var(--sd-text);
            cursor: pointer;
        }
        .sd-hero-cat {
            background: linear-gradient(135deg, var(--sd-dark) 0%, var(--sd-dark-2) 55%, rgba(11, 91, 255, 0.25) 100%);
            color: #fff;
            padding: 72px 0 56px;
            position: relative;
            overflow: hidden;
        }
        .sd-hero-cat::after {
            content: '';
            position: absolute;
            right: -80px;
            top: -80px;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(198, 241, 53, 0.18), transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .sd-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }
        .sd-breadcrumb a {
            color: rgba(255, 255, 255, 0.7);
        }
        .sd-breadcrumb a:hover {
            color: #fff;
        }
        .sd-hero-cat h1 {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.3;
            margin: 0 0 16px;
            color: #fff;
        }
        .sd-hero-cat p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.75);
            max-width: 680px;
            line-height: 1.8;
            margin-bottom: 24px;
        }
        .sd-chip-row {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
        }
        .sd-filter-bar {
            background: var(--sd-card);
            border: 1px solid var(--sd-line);
            border-radius: var(--sd-radius-md);
            padding: 16px 20px;
            display: flex;
            align-items: center;
            gap: 14px;
            flex-wrap: wrap;
            box-shadow: var(--sd-shadow-card);
        }
        .sd-filter-bar label {
            font-size: 14px;
            font-weight: 600;
            color: var(--sd-text-weak);
            white-space: nowrap;
        }
        .sd-filter-select {
            padding: 8px 14px;
            border-radius: var(--sd-radius-sm);
            border: 1px solid var(--sd-line);
            background: #fff;
            font-size: 14px;
            color: var(--sd-text);
            min-width: 140px;
            cursor: pointer;
            transition: border-color 0.2s;
        }
        .sd-filter-select:focus {
            outline: 2px solid var(--sd-primary);
            outline-offset: 2px;
            border-color: var(--sd-primary);
        }
        .sd-match-list {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
            gap: 18px;
        }
        .sd-match-card {
            background: var(--sd-card);
            border: 1px solid var(--sd-line);
            border-radius: var(--sd-radius-md);
            box-shadow: var(--sd-shadow-card);
            overflow: hidden;
            transition: all 0.3s ease;
        }
        .sd-match-card:hover {
            box-shadow: var(--sd-shadow-hover);
            transform: translateY(-3px);
        }
        .sd-match-card-top {
            padding: 16px 20px;
            border-bottom: 1px solid var(--sd-line);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 10px;
        }
        .sd-match-date {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            color: var(--sd-text-weak);
        }
        .sd-match-body {
            padding: 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }
        .sd-match-team {
            text-align: center;
            flex: 1;
        }
        .sd-match-team img {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            object-fit: cover;
            margin: 0 auto 8px;
        }
        .sd-match-team-name {
            font-size: 15px;
            font-weight: 600;
            line-height: 1.4;
        }
        .sd-match-vs {
            font-size: 24px;
            font-weight: 700;
            color: var(--sd-text-muted);
        }
        .sd-banner-card {
            background: linear-gradient(135deg, rgba(11, 91, 255, 0.08), rgba(198, 241, 53, 0.12));
            border: 1px solid rgba(11, 91, 255, 0.18);
            border-radius: var(--sd-radius-lg);
            padding: 28px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            flex-wrap: wrap;
        }
        .sd-banner-card h3 {
            font-size: 20px;
            font-weight: 700;
            margin: 0 0 8px;
        }
        .sd-banner-card p {
            margin: 0;
            color: var(--sd-text-weak);
            font-size: 15px;
        }
        .sd-data-row {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 16px;
        }
        .sd-data-item {
            background: var(--sd-card);
            border: 1px solid var(--sd-line);
            border-radius: var(--sd-radius-md);
            padding: 22px;
            box-shadow: var(--sd-shadow-card);
            transition: all 0.3s ease;
        }
        .sd-data-item:hover {
            box-shadow: var(--sd-shadow-hover);
            transform: translateY(-3px);
        }
        .sd-data-number {
            font-size: 32px;
            font-weight: 700;
            color: var(--sd-primary);
            line-height: 1.2;
            margin-bottom: 6px;
        }
        .sd-data-label {
            font-size: 14px;
            color: var(--sd-text-weak);
        }
        .sd-link-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .sd-link-list li {
            padding: 12px 0;
            border-bottom: 1px solid var(--sd-line);
        }
        .sd-link-list li:last-child {
            border-bottom: none;
        }
        .sd-link-list a {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 15px;
            font-weight: 500;
            color: var(--sd-text);
            transition: color 0.2s;
        }
        .sd-link-list a:hover {
            color: var(--sd-primary);
        }
        .sd-link-list a i {
            color: var(--sd-primary);
            font-size: 12px;
        }
        .sd-faq-item {
            background: var(--sd-card);
            border: 1px solid var(--sd-line);
            border-radius: var(--sd-radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            box-shadow: var(--sd-shadow-card);
        }
        .sd-faq-item summary {
            padding: 16px 20px;
            font-weight: 600;
            font-size: 15px;
            cursor: pointer;
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            color: var(--sd-text);
        }
        .sd-faq-item summary::-webkit-details-marker {
            display: none;
        }
        .sd-faq-item summary::after {
            content: '\f107';
            font-family: 'Font Awesome 6 Free';
            font-weight: 700;
            color: var(--sd-primary);
            transition: transform 0.3s;
        }
        .sd-faq-item[open] summary::after {
            transform: rotate(180deg);
        }
        .sd-faq-item .sd-faq-body {
            padding: 0 20px 18px;
            color: var(--sd-text-weak);
            font-size: 15px;
            line-height: 1.8;
        }
        .sd-cta-box {
            background: var(--sd-dark);
            border-radius: var(--sd-radius-lg);
            padding: 40px 32px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
            color: #fff;
        }
        .sd-cta-box h3 {
            font-size: 22px;
            font-weight: 700;
            margin: 0 0 8px;
            color: #fff;
        }
        .sd-cta-box p {
            margin: 0;
            color: rgba(255, 255, 255, 0.7);
            font-size: 15px;
        }
        .sd-cta-input {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
        }
        .sd-cta-input input {
            padding: 12px 18px;
            border-radius: var(--sd-radius-md);
            border: 1px solid rgba(255, 255, 255, 0.3);
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            font-size: 15px;
            min-width: 240px;
            transition: all 0.2s;
        }
        .sd-cta-input input::placeholder {
            color: rgba(255, 255, 255, 0.5);
        }
        .sd-cta-input input:focus {
            outline: 2px solid var(--sd-neon);
            outline-offset: 2px;
            border-color: var(--sd-neon);
        }
        .sd-footer {
            background: var(--sd-dark);
            color: rgba(255, 255, 255, 0.72);
            padding: 48px 0 24px;
            margin-top: auto;
        }
        .sd-footer-top {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        .sd-footer-brand h3 {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin: 0 0 12px;
        }
        .sd-footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            margin: 0;
        }
        .sd-footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            margin: 0 0 14px;
        }
        .sd-footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .sd-footer-col ul li {
            margin-bottom: 8px;
        }
        .sd-footer-col ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            transition: color 0.2s;
        }
        .sd-footer-col ul li a:hover {
            color: #fff;
        }
        .sd-footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            padding-top: 20px;
            font-size: 13px;
        }
        .sd-footer-bottom a {
            color: rgba(255, 255, 255, 0.6);
        }
        .sd-footer-bottom a:hover {
            color: #fff;
        }
        .sd-footer-links {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .sd-footer-sep {
            color: rgba(255, 255, 255, 0.3);
        }
        @media (max-width: 991px) {
            .sd-header-inner {
                padding: 12px 20px;
            }
            .sd-footer-top {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .sd-match-list {
                grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            }
            .sd-hero-cat {
                padding: 56px 0 42px;
            }
            .sd-hero-cat h1 {
                font-size: 27px;
            }
            .sd-section {
                padding: 56px 0;
            }
        }
        @media (max-width: 767px) {
            .sd-header-inner {
                padding: 12px 16px;
                flex-wrap: nowrap;
            }
            .sd-header-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                background: #fff;
                border-radius: var(--sd-radius-md);
                box-shadow: var(--sd-shadow-card);
                padding: 12px;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
            }
            .sd-header-nav.open {
                display: flex;
            }
            .sd-mobile-toggle {
                display: inline-flex;
                align-items: center;
                justify-content: center;
            }
            .sd-header-cta .sd-btn {
                padding: 9px 14px;
                font-size: 13px;
                min-height: 40px;
            }
            .sd-hero-cat h1 {
                font-size: 23px;
            }
            .sd-hero-cat p {
                font-size: 15px;
            }
            .sd-match-list {
                grid-template-columns: 1fr;
            }
            .sd-match-body {
                flex-direction: column;
                gap: 12px;
            }
            .sd-match-vs {
                font-size: 20px;
            }
            .sd-banner-card {
                flex-direction: column;
                align-items: flex-start;
            }
            .sd-cta-box {
                flex-direction: column;
                align-items: flex-start;
            }
            .sd-cta-input input {
                min-width: 100%;
            }
            .sd-container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .sd-footer-top {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .sd-footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
        }
        @media (max-width: 519px) {
            .sd-section {
                padding: 42px 0;
            }
            .sd-hero-cat {
                padding: 42px 0 32px;
            }
            .sd-hero-cat h1 {
                font-size: 20px;
            }
            .sd-data-number {
                font-size: 26px;
            }
            .sd-data-row {
                grid-template-columns: 1fr;
            }
            .sd-filter-bar {
                flex-direction: column;
                align-items: stretch;
            }
            .sd-filter-select {
                width: 100%;
                min-width: auto;
            }
        }

/* roulang page: category1 */
:root {
            --sd-primary: #0B5FFF;
            --sd-primary-dark: #0848C8;
            --sd-accent: #FF3D2E;
            --sd-neon: #C6F135;
            --sd-bg: #F5F7FA;
            --sd-dark: #0B1B2B;
            --sd-dark-2: #112A3E;
            --sd-card: #FFFFFF;
            --sd-text: #0B1B2B;
            --sd-text-weak: #5A6B7D;
            --sd-text-muted: #8896A6;
            --sd-line: #E3E8EF;
            --sd-radius-sm: 8px;
            --sd-radius-md: 14px;
            --sd-radius-lg: 22px;
            --sd-shadow-card: 0 8px 24px rgba(11, 27, 43, 0.06);
            --sd-shadow-hover: 0 16px 40px rgba(13, 91, 255, 0.16);
            --sd-font: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, sans-serif;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--sd-font);
            background-color: var(--sd-bg);
            color: var(--sd-text);
            line-height: 1.85;
            margin: 0;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: var(--sd-primary);
            text-decoration: none;
            transition: color 0.2s ease;
        }

        a:hover {
            color: var(--sd-primary-dark);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        .sd-container {
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 28px;
            padding-right: 28px;
        }

        .sd-section {
            padding: 76px 0;
            position: relative;
        }

        .sd-section-tight {
            padding: 48px 0;
        }

        .sd-bg-dark {
            background-color: var(--sd-dark);
        }

        .sd-bg-dark .sd-section-title {
            color: #fff;
        }

        .sd-bg-dark .sd-text-weak {
            color: rgba(255, 255, 255, 0.72);
        }

        .sd-section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--sd-primary);
            background: rgba(11, 91, 255, 0.07);
            padding: 6px 14px;
            border-radius: 999px;
            margin-bottom: 18px;
        }

        .sd-section-title {
            font-size: 28px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--sd-text);
            margin: 0 0 14px;
        }

        .sd-lead {
            font-size: 17px;
            color: var(--sd-text-weak);
            line-height: 1.85;
            max-width: 720px;
        }

        .sd-text-weak {
            color: var(--sd-text-weak);
        }

        .sd-text-muted {
            color: var(--sd-text-muted);
            font-size: 14px;
        }

        .sd-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            border-radius: var(--sd-radius-md);
            padding: 13px 26px;
            font-size: 15px;
            line-height: 1.2;
            transition: all 0.2s ease;
            border: none;
            cursor: pointer;
            min-height: 44px;
            text-align: center;
        }

        .sd-btn:focus-visible {
            outline: 2px solid var(--sd-primary);
            outline-offset: 2px;
        }

        .sd-btn-primary {
            background: var(--sd-primary);
            color: #fff;
        }

        .sd-btn-primary:hover {
            background: var(--sd-primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 10px 24px rgba(11, 91, 255, 0.32);
        }

        .sd-btn-primary:active {
            transform: translateY(0);
            box-shadow: none;
        }

        .sd-btn-outline-light {
            background: transparent;
            color: #fff;
            border: 1.5px solid rgba(255, 255, 255, 0.5);
        }

        .sd-btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
            transform: translateY(-2px);
        }

        .sd-btn-outline {
            background: transparent;
            color: var(--sd-text);
            border: 1.5px solid var(--sd-line);
        }

        .sd-btn-outline:hover {
            background: var(--sd-bg);
            border-color: var(--sd-primary);
            color: var(--sd-primary);
            transform: translateY(-2px);
        }

        .sd-btn-accent {
            background: var(--sd-accent);
            color: #fff;
        }

        .sd-btn-accent:hover {
            background: #d92b1d;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 10px 24px rgba(255, 61, 46, 0.3);
        }

        .sd-btn-sm {
            padding: 9px 18px;
            font-size: 13px;
            min-height: 38px;
        }

        .sd-chip {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 500;
            border-radius: 999px;
            padding: 7px 16px;
            font-size: 13px;
            background: var(--sd-bg);
            color: var(--sd-text);
            border: 1px solid var(--sd-line);
            transition: all 0.2s ease;
            white-space: nowrap;
        }

        .sd-chip:hover {
            border-color: var(--sd-primary);
            background: rgba(11, 91, 255, 0.06);
            color: var(--sd-primary);
        }

        .sd-chip.active {
            background: var(--sd-primary);
            color: #fff;
            border-color: var(--sd-primary);
        }

        .sd-card {
            background: var(--sd-card);
            border: 1px solid var(--sd-line);
            border-radius: var(--sd-radius-md);
            box-shadow: var(--sd-shadow-card);
            transition: all 0.3s ease;
            overflow: hidden;
        }

        .sd-card:hover {
            box-shadow: var(--sd-shadow-hover);
            transform: translateY(-3px);
        }

        .sd-card-body {
            padding: 22px;
        }

        .sd-badge {
            display: inline-block;
            padding: 4px 12px;
            font-size: 12px;
            font-weight: 600;
            border-radius: 999px;
            background: rgba(11, 91, 255, 0.08);
            color: var(--sd-primary);
            letter-spacing: 0.03em;
        }

        .sd-badge-accent {
            background: rgba(255, 61, 46, 0.08);
            color: var(--sd-accent);
        }

        .sd-badge-neon {
            background: rgba(198, 241, 53, 0.16);
            color: #3c5a00;
        }

        .sd-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--sd-text-muted);
            flex-wrap: wrap;
        }

        .sd-breadcrumb a {
            color: var(--sd-text-muted);
            transition: color 0.2s ease;
        }

        .sd-breadcrumb a:hover {
            color: var(--sd-primary);
        }

        .sd-breadcrumb .sd-sep {
            color: var(--sd-text-muted);
            opacity: 0.5;
        }

        .sd-header {
            background: #fff;
            border-bottom: 1px solid var(--sd-line);
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 0 0;
        }

        .sd-header-inner {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px 20px;
            padding: 14px 28px;
            max-width: 1200px;
            margin: 0 auto;
        }

        .sd-logo {
            font-size: 20px;
            font-weight: 700;
            color: var(--sd-text);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
        }

        .sd-logo:hover {
            color: var(--sd-primary);
        }

        .sd-logo i {
            color: var(--sd-primary);
            font-size: 22px;
        }

        .sd-header-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            flex: 1;
        }

        .sd-header-cta {
            margin-left: auto;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .sd-header-cta .sd-btn {
            min-height: 40px;
            padding: 10px 20px;
            font-size: 14px;
        }

        .sd-nav-toggle {
            display: none;
            border: 1.5px solid var(--sd-line);
            background: #fff;
            border-radius: var(--sd-radius-sm);
            padding: 8px 14px;
            font-size: 18px;
            cursor: pointer;
            color: var(--sd-text);
            transition: all 0.2s ease;
        }

        .sd-nav-toggle:hover {
            border-color: var(--sd-primary);
            color: var(--sd-primary);
        }

        .sd-mobile-nav {
            display: none;
            flex-direction: column;
            gap: 6px;
            padding: 12px 28px 20px;
            background: #fff;
            border-bottom: 1px solid var(--sd-line);
        }

        .sd-mobile-nav.show {
            display: flex;
        }

        .sd-cat-hero {
            background: var(--sd-dark);
            min-height: 52vh;
            display: flex;
            align-items: center;
            position: relative;
            overflow: hidden;
            padding: 60px 0;
        }

        .sd-cat-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(11, 27, 43, 0.92) 30%, rgba(11, 27, 43, 0.55) 100%),
                url('/assets/images/23f35a53466b9bc9.webp') center/cover no-repeat;
            z-index: 0;
        }

        .sd-cat-hero .sd-container {
            position: relative;
            z-index: 1;
        }

        .sd-cat-hero .sd-breadcrumb {
            color: rgba(255, 255, 255, 0.65);
            margin-bottom: 18px;
        }

        .sd-cat-hero .sd-breadcrumb a {
            color: rgba(255, 255, 255, 0.65);
        }

        .sd-cat-hero .sd-breadcrumb a:hover {
            color: var(--sd-neon);
        }

        .sd-cat-hero .sd-breadcrumb .sd-sep {
            color: rgba(255, 255, 255, 0.4);
        }

        .sd-cat-hero h1 {
            font-size: 36px;
            font-weight: 700;
            color: #fff;
            margin: 0 0 16px;
            line-height: 1.25;
        }

        .sd-cat-hero .sd-cat-desc {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.82);
            max-width: 720px;
            line-height: 1.85;
            margin-bottom: 28px;
        }

        .sd-cat-chips {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }

        .sd-cat-chips .sd-chip {
            background: rgba(255, 255, 255, 0.1);
            color: rgba(255, 255, 255, 0.8);
            border-color: rgba(255, 255, 255, 0.2);
        }

        .sd-cat-chips .sd-chip:hover {
            background: rgba(255, 255, 255, 0.2);
            border-color: rgba(255, 255, 255, 0.4);
            color: #fff;
        }

        .sd-cat-chips .sd-chip.active {
            background: var(--sd-primary);
            color: #fff;
            border-color: var(--sd-primary);
        }

        .sd-filter-bar {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
            padding: 20px 0;
            border-bottom: 1px solid var(--sd-line);
        }

        .sd-filter-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--sd-text-weak);
            white-space: nowrap;
        }

        .sd-filter-bar .sd-chip {
            cursor: pointer;
            background: #fff;
        }

        .sd-filter-bar .sd-chip.active {
            background: var(--sd-accent);
            color: #fff;
            border-color: var(--sd-accent);
        }

        .sd-news-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
        }

        .sd-news-card {
            display: flex;
            flex-direction: column;
            background: var(--sd-card);
            border: 1px solid var(--sd-line);
            border-radius: var(--sd-radius-md);
            box-shadow: var(--sd-shadow-card);
            transition: all 0.3s ease;
            overflow: hidden;
        }

        .sd-news-card:hover {
            box-shadow: var(--sd-shadow-hover);
            transform: translateY(-3px);
        }

        .sd-news-card-inner {
            display: flex;
            flex-wrap: wrap;
            align-items: stretch;
        }

        .sd-news-thumb {
            flex: 0 0 220px;
            max-width: 220px;
            overflow: hidden;
        }

        .sd-news-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 160px;
            transition: transform 0.4s ease;
        }

        .sd-news-card:hover .sd-news-thumb img {
            transform: scale(1.05);
        }

        .sd-news-content {
            flex: 1;
            padding: 20px 24px;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .sd-news-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
        }

        .sd-news-date {
            font-size: 13px;
            color: var(--sd-text-muted);
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .sd-news-title {
            font-size: 18px;
            font-weight: 700;
            line-height: 1.4;
            color: var(--sd-text);
            margin: 0;
        }

        .sd-news-title a {
            color: var(--sd-text);
        }

        .sd-news-title a:hover {
            color: var(--sd-primary);
        }

        .sd-news-excerpt {
            font-size: 15px;
            color: var(--sd-text-weak);
            line-height: 1.8;
            margin: 0;
            flex: 1;
        }

        .sd-news-read {
            align-self: flex-start;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 600;
            font-size: 14px;
            color: var(--sd-primary);
            transition: all 0.2s ease;
        }

        .sd-news-read:hover {
            color: var(--sd-primary-dark);
            gap: 10px;
        }

        .sd-banner {
            background: var(--sd-dark);
            border-radius: var(--sd-radius-lg);
            overflow: hidden;
            position: relative;
            padding: 48px 36px;
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 30px;
        }

        .sd-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(100deg, rgba(11, 27, 43, 0.95) 40%, rgba(11, 91, 255, 0.45) 100%),
                url('/assets/images/d192f48cf27d31bd.webp') center/cover no-repeat;
            z-index: 0;
        }

        .sd-banner>* {
            position: relative;
            z-index: 1;
        }

        .sd-banner-text {
            flex: 1;
            min-width: 260px;
        }

        .sd-banner-text h3 {
            font-size: 26px;
            font-weight: 700;
            color: #fff;
            margin: 0 0 12px;
            line-height: 1.3;
        }

        .sd-banner-text p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.8);
            line-height: 1.8;
            max-width: 600px;
            margin: 0 0 22px;
        }

        .sd-banner-cta {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        .sd-stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 18px;
        }

        .sd-stat-card {
            background: var(--sd-card);
            border: 1px solid var(--sd-line);
            border-radius: var(--sd-radius-md);
            padding: 24px 20px;
            text-align: center;
            box-shadow: var(--sd-shadow-card);
            transition: all 0.3s ease;
        }

        .sd-stat-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--sd-shadow-hover);
        }

        .sd-stat-number {
            font-size: 32px;
            font-weight: 700;
            color: var(--sd-primary);
            line-height: 1.2;
            margin-bottom: 8px;
        }

        .sd-stat-label {
            font-size: 14px;
            color: var(--sd-text-weak);
            font-weight: 500;
        }

        .sd-stat-delta {
            display: inline-block;
            padding: 2px 8px;
            font-size: 12px;
            font-weight: 600;
            border-radius: 999px;
            background: rgba(198, 241, 53, 0.16);
            color: #5e8a00;
            margin-top: 6px;
        }

        .sd-related-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 12px;
        }

        .sd-related-item {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 14px 18px;
            background: #fff;
            border: 1px solid var(--sd-line);
            border-radius: var(--sd-radius-sm);
            transition: all 0.2s ease;
        }

        .sd-related-item:hover {
            border-color: var(--sd-primary);
            box-shadow: 0 4px 12px rgba(11, 91, 255, 0.1);
        }

        .sd-related-item i {
            color: var(--sd-primary);
            font-size: 16px;
            flex-shrink: 0;
        }

        .sd-related-item a {
            color: var(--sd-text);
            font-weight: 500;
            font-size: 15px;
            line-height: 1.5;
        }

        .sd-related-item a:hover {
            color: var(--sd-primary);
        }

        .sd-faq-item {
            background: #fff;
            border: 1px solid var(--sd-line);
            border-radius: var(--sd-radius-sm);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all 0.2s ease;
        }

        .sd-faq-item summary {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 18px 22px;
            cursor: pointer;
            font-weight: 600;
            font-size: 15px;
            color: var(--sd-text);
            list-style: none;
            user-select: none;
            transition: all 0.2s ease;
        }

        .sd-faq-item summary::-webkit-details-marker {
            display: none;
        }

        .sd-faq-item summary::after {
            content: '+';
            margin-left: auto;
            font-size: 22px;
            font-weight: 400;
            color: var(--sd-primary);
            transition: transform 0.3s ease;
        }

        .sd-faq-item[open] summary::after {
            transform: rotate(45deg);
        }

        .sd-faq-item summary:hover {
            background: rgba(11, 91, 255, 0.04);
        }

        .sd-faq-item .sd-faq-body {
            padding: 0 22px 20px;
            font-size: 15px;
            color: var(--sd-text-weak);
            line-height: 1.85;
        }

        .sd-cta-box {
            background: var(--sd-dark);
            border-radius: var(--sd-radius-lg);
            padding: 48px 36px;
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 30px;
            position: relative;
            overflow: hidden;
        }

        .sd-cta-box::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(110deg, rgba(11, 27, 43, 0.97) 50%, rgba(11, 91, 255, 0.35) 100%),
                url('/assets/images/879ade648986fdc0.webp') center/cover no-repeat;
            z-index: 0;
        }

        .sd-cta-box>* {
            position: relative;
            z-index: 1;
        }

        .sd-cta-text {
            flex: 1;
            min-width: 260px;
        }

        .sd-cta-text h3 {
            font-size: 26px;
            font-weight: 700;
            color: #fff;
            margin: 0 0 12px;
            line-height: 1.3;
        }

        .sd-cta-text p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.8);
            line-height: 1.8;
            margin: 0;
        }

        .sd-cta-form {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
            min-width: 280px;
            flex: 0 0 auto;
        }

        .sd-cta-form input {
            flex: 1;
            min-width: 200px;
            padding: 13px 18px;
            border-radius: var(--sd-radius-md);
            border: 1.5px solid rgba(255, 255, 255, 0.3);
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
            font-size: 15px;
            outline: none;
            transition: all 0.2s ease;
        }

        .sd-cta-form input::placeholder {
            color: rgba(255, 255, 255, 0.5);
        }

        .sd-cta-form input:focus {
            border-color: var(--sd-neon);
            background: rgba(255, 255, 255, 0.18);
            box-shadow: 0 0 0 3px rgba(198, 241, 53, 0.2);
        }

        .sd-footer {
            background: var(--sd-dark);
            color: rgba(255, 255, 255, 0.75);
            padding: 56px 0 24px;
            margin-top: 0;
        }

        .sd-footer-top {
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
            padding-bottom: 28px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .sd-footer-brand {
            flex: 1 1 280px;
            max-width: 360px;
        }

        .sd-footer-brand h3 {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin: 0 0 14px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .sd-footer-brand p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            line-height: 1.8;
            margin: 0;
        }

        .sd-footer-col {
            flex: 0 0 150px;
        }

        .sd-footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            margin: 0 0 14px;
            letter-spacing: 0.03em;
        }

        .sd-footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .sd-footer-col ul li {
            margin-bottom: 10px;
        }

        .sd-footer-col ul li a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 14px;
            transition: color 0.2s ease;
        }

        .sd-footer-col ul li a:hover {
            color: var(--sd-neon);
        }

        .sd-footer-bottom {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px 20px;
            padding-top: 20px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
        }

        .sd-footer-links {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-left: auto;
        }

        .sd-footer-links a {
            color: rgba(255, 255, 255, 0.5);
            font-size: 13px;
            transition: color 0.2s ease;
        }

        .sd-footer-links a:hover {
            color: var(--sd-neon);
        }

        .sd-footer-sep {
            color: rgba(255, 255, 255, 0.3);
        }

        @media (max-width: 991px) {
            .sd-header-inner {
                padding: 12px 20px;
            }
            .sd-header-nav {
                order: 3;
                flex-basis: 100%;
                overflow-x: auto;
                flex-wrap: nowrap;
                -webkit-overflow-scrolling: touch;
                scrollbar-width: thin;
                padding-bottom: 4px;
            }
            .sd-header-cta {
                margin-left: auto;
            }
            .sd-news-thumb {
                flex: 0 0 180px;
                max-width: 180px;
            }
            .sd-stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .sd-related-list {
                grid-template-columns: 1fr;
            }
            .sd-banner {
                padding: 36px 24px;
            }
            .sd-cta-box {
                padding: 36px 24px;
            }
        }

        @media (max-width: 767px) {
            .sd-container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .sd-section {
                padding: 52px 0;
            }
            .sd-section-title {
                font-size: 22px;
            }
            .sd-cat-hero {
                min-height: 45vh;
                padding: 40px 0;
            }
            .sd-cat-hero h1 {
                font-size: 26px;
            }
            .sd-cat-hero .sd-cat-desc {
                font-size: 15px;
            }
            .sd-header-inner {
                padding: 10px 16px;
                gap: 8px;
            }
            .sd-logo {
                font-size: 17px;
            }
            .sd-logo i {
                font-size: 18px;
            }
            .sd-nav-toggle {
                display: inline-flex;
                align-items: center;
                justify-content: center;
                margin-left: auto;
            }
            .sd-header-nav {
                display: none;
            }
            .sd-header-cta {
                display: none;
            }
            .sd-mobile-nav {
                display: none;
            }
            .sd-mobile-nav.show {
                display: flex;
            }
            .sd-mobile-nav .sd-chip {
                width: 100%;
                justify-content: flex-start;
                padding: 12px 18px;
                font-size: 14px;
                border-radius: var(--sd-radius-sm);
                background: #fff;
            }
            .sd-mobile-nav .sd-chip.active {
                background: var(--sd-primary);
                color: #fff;
            }
            .sd-news-thumb {
                flex: 0 0 100%;
                max-width: 100%;
                height: 180px;
            }
            .sd-news-thumb img {
                height: 180px;
            }
            .sd-news-card-inner {
                flex-direction: column;
            }
            .sd-news-content {
                padding: 18px 16px;
            }
            .sd-news-title {
                font-size: 16px;
            }
            .sd-stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .sd-stat-card {
                padding: 18px 14px;
            }
            .sd-stat-number {
                font-size: 26px;
            }
            .sd-related-list {
                grid-template-columns: 1fr;
            }
            .sd-banner {
                padding: 28px 18px;
                flex-direction: column;
                text-align: left;
            }
            .sd-banner-text h3 {
                font-size: 20px;
            }
            .sd-cta-box {
                padding: 28px 18px;
                flex-direction: column;
                align-items: stretch;
            }
            .sd-cta-form {
                min-width: auto;
            }
            .sd-cta-form input {
                min-width: 100%;
            }
            .sd-footer-top {
                gap: 28px;
            }
            .sd-footer-col {
                flex: 0 0 45%;
            }
            .sd-footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .sd-footer-links {
                margin-left: 0;
            }
            .sd-filter-bar {
                gap: 6px;
            }
        }

        @media (max-width: 520px) {
            .sd-cat-hero h1 {
                font-size: 22px;
            }
            .sd-cat-chips {
                gap: 6px;
            }
            .sd-cat-chips .sd-chip {
                padding: 6px 12px;
                font-size: 12px;
            }
            .sd-stats-grid {
                grid-template-columns: 1fr 1fr;
            }
            .sd-stat-number {
                font-size: 22px;
            }
            .sd-filter-bar {
                justify-content: flex-start;
            }
            .sd-filter-bar .sd-chip {
                padding: 6px 12px;
                font-size: 12px;
            }
        }

/* roulang page: category3 */
:root {
            --sd-primary: #0B5FFF;
            --sd-primary-dark: #0848C8;
            --sd-accent: #FF3D2E;
            --sd-neon: #C6F135;
            --sd-bg: #F5F7FA;
            --sd-dark: #0B1B2B;
            --sd-dark-2: #112A3E;
            --sd-card: #FFFFFF;
            --sd-text: #0B1B2B;
            --sd-text-weak: #5A6B7D;
            --sd-text-muted: #8896A6;
            --sd-line: #E3E8EF;
            --sd-radius-sm: 8px;
            --sd-radius-md: 14px;
            --sd-radius-lg: 22px;
            --sd-shadow-card: 0 8px 24px rgba(11, 27, 43, 0.06);
            --sd-shadow-hover: 0 16px 40px rgba(13, 91, 255, 0.16);
            --sd-font: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, sans-serif;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--sd-font);
            background-color: var(--sd-bg);
            color: var(--sd-text);
            line-height: 1.85;
            margin: 0;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: var(--sd-primary);
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: var(--sd-primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            background: #EBEEF3;
        }

        .sd-container {
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 28px;
            padding-right: 28px;
        }

        .sd-section {
            padding: 72px 0;
            position: relative;
        }
        .sd-section-tight {
            padding: 44px 0;
        }
        .sd-bg-dark {
            background: var(--sd-dark);
            color: #fff;
        }
        .sd-bg-dark .sd-section-title {
            color: #fff;
        }
        .sd-bg-dark .sd-text-weak {
            color: rgba(255, 255, 255, 0.72);
        }
        .sd-section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--sd-primary);
            background: rgba(11, 91, 255, 0.07);
            padding: 6px 14px;
            border-radius: 999px;
            margin-bottom: 18px;
        }
        .sd-section-title {
            font-size: 28px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--sd-text);
            margin: 0 0 14px;
        }
        .sd-lead {
            font-size: 17px;
            color: var(--sd-text-weak);
            line-height: 1.85;
            max-width: 720px;
        }
        .sd-text-weak {
            color: var(--sd-text-weak);
        }
        .sd-text-muted {
            color: var(--sd-text-muted);
            font-size: 14px;
        }

        .sd-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            border-radius: var(--sd-radius-md);
            padding: 13px 26px;
            font-size: 15px;
            line-height: 1.2;
            transition: all 0.2s ease;
            border: none;
            cursor: pointer;
            min-height: 44px;
            text-align: center;
        }
        .sd-btn:focus-visible {
            outline: 2px solid var(--sd-primary);
            outline-offset: 2px;
        }
        .sd-btn-primary {
            background: var(--sd-primary);
            color: #fff;
        }
        .sd-btn-primary:hover {
            background: var(--sd-primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 10px 24px rgba(11, 91, 255, 0.32);
        }
        .sd-btn-primary:active {
            transform: translateY(0);
            box-shadow: none;
        }
        .sd-btn-outline-light {
            background: transparent;
            color: #fff;
            border: 1.5px solid rgba(255, 255, 255, 0.5);
        }
        .sd-btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
            transform: translateY(-2px);
        }
        .sd-btn-outline {
            background: transparent;
            color: var(--sd-text);
            border: 1.5px solid var(--sd-line);
        }
        .sd-btn-outline:hover {
            background: var(--sd-bg);
            border-color: var(--sd-primary);
            color: var(--sd-primary);
            transform: translateY(-2px);
        }
        .sd-btn-accent {
            background: var(--sd-accent);
            color: #fff;
        }
        .sd-btn-accent:hover {
            background: #d92b1d;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 10px 24px rgba(255, 61, 46, 0.3);
        }
        .sd-btn-sm {
            padding: 9px 18px;
            font-size: 13px;
            min-height: 38px;
        }

        .sd-chip {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 500;
            border-radius: 999px;
            padding: 7px 16px;
            font-size: 13px;
            background: var(--sd-bg);
            color: var(--sd-text);
            border: 1px solid var(--sd-line);
            transition: all 0.2s ease;
            white-space: nowrap;
        }
        .sd-chip:hover {
            border-color: var(--sd-primary);
            background: rgba(11, 91, 255, 0.06);
            color: var(--sd-primary);
        }
        .sd-chip.active {
            background: var(--sd-primary);
            color: #fff;
            border-color: var(--sd-primary);
        }

        .sd-card {
            background: var(--sd-card);
            border: 1px solid var(--sd-line);
            border-radius: var(--sd-radius-md);
            box-shadow: var(--sd-shadow-card);
            transition: all 0.3s ease;
            overflow: hidden;
        }
        .sd-card:hover {
            box-shadow: var(--sd-shadow-hover);
            transform: translateY(-3px);
        }
        .sd-card-body {
            padding: 22px;
        }
        .sd-badge {
            display: inline-block;
            padding: 4px 12px;
            font-size: 12px;
            font-weight: 600;
            border-radius: 999px;
            background: rgba(11, 91, 255, 0.08);
            color: var(--sd-primary);
            line-height: 1.5;
        }
        .sd-badge.accent {
            background: rgba(255, 61, 46, 0.1);
            color: var(--sd-accent);
        }
        .sd-badge.neon {
            background: rgba(198, 241, 53, 0.15);
            color: #5C7A00;
        }

        /* Header */
        .sd-header {
            background: #fff;
            border-bottom: 1px solid var(--sd-line);
            position: sticky;
            top: 0;
            z-index: 1000;
            transition: box-shadow 0.25s ease;
        }
        .sd-header.scrolled {
            box-shadow: 0 6px 24px rgba(11, 27, 43, 0.07);
        }
        .sd-header-inner {
            display: flex;
            align-items: center;
            gap: 20px;
            flex-wrap: wrap;
            padding-top: 14px;
            padding-bottom: 14px;
            min-height: 68px;
        }
        .sd-logo {
            font-size: 22px;
            font-weight: 700;
            color: var(--sd-text);
            display: inline-flex;
            align-items: center;
            gap: 10px;
            letter-spacing: 0.02em;
        }
        .sd-logo:hover {
            color: var(--sd-primary);
        }
        .sd-logo .fa-bolt {
            color: var(--sd-accent);
            font-size: 22px;
        }
        .sd-header-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            margin-left: auto;
        }
        .sd-header-cta {
            margin-left: 8px;
            white-space: nowrap;
        }
        .sd-nav-toggle {
            display: none;
            background: transparent;
            border: 1px solid var(--sd-line);
            border-radius: var(--sd-radius-sm);
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            color: var(--sd-text);
            font-size: 18px;
            transition: all 0.2s ease;
        }
        .sd-nav-toggle:hover {
            background: var(--sd-bg);
            border-color: var(--sd-primary);
            color: var(--sd-primary);
        }
        .sd-header-nav-mobile {
            display: none;
            flex-direction: column;
            gap: 6px;
            padding: 16px 0 20px;
            width: 100%;
            flex-basis: 100%;
        }
        .sd-header-nav-mobile.open {
            display: flex;
        }
        .sd-header-nav-mobile .sd-chip {
            justify-content: flex-start;
        }

        /* Breadcrumb */
        .sd-breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 13px;
            color: var(--sd-text-muted);
            margin-bottom: 16px;
        }
        .sd-breadcrumb a {
            color: var(--sd-text-muted);
            transition: color 0.2s ease;
        }
        .sd-breadcrumb a:hover {
            color: var(--sd-primary);
        }
        .sd-breadcrumb .sep {
            color: var(--sd-text-muted);
            opacity: 0.6;
        }
        .sd-breadcrumb .current {
            color: var(--sd-text);
            font-weight: 600;
        }

        /* Category Hero */
        .sd-cat-hero {
            position: relative;
            background: var(--sd-dark);
            min-height: 52vh;
            display: flex;
            align-items: center;
            overflow: hidden;
            padding: 56px 0;
        }
        .sd-cat-hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/23f35a53466b9bc9.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.3;
            z-index: 0;
        }
        .sd-cat-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(11, 27, 43, 0.88) 0%, rgba(11, 27, 43, 0.55) 60%, rgba(11, 27, 43, 0.3) 100%);
            z-index: 0;
        }
        .sd-cat-hero-content {
            position: relative;
            z-index: 1;
            max-width: 760px;
        }
        .sd-cat-hero-title {
            font-size: 38px;
            font-weight: 700;
            color: #fff;
            line-height: 1.25;
            margin: 0 0 18px;
        }
        .sd-cat-hero-desc {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.82);
            line-height: 1.85;
            max-width: 680px;
            margin: 0 0 28px;
        }
        .sd-cat-hero-chips {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .sd-cat-hero-chips .sd-chip {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.22);
            color: rgba(255, 255, 255, 0.85);
        }
        .sd-cat-hero-chips .sd-chip:hover {
            background: rgba(255, 255, 255, 0.16);
            border-color: rgba(255, 255, 255, 0.5);
            color: #fff;
        }
        .sd-cat-hero-chips .sd-chip.active {
            background: var(--sd-primary);
            border-color: var(--sd-primary);
            color: #fff;
        }

        /* Filter bar */
        .sd-filter-bar {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            padding: 18px 20px;
            background: var(--sd-card);
            border: 1px solid var(--sd-line);
            border-radius: var(--sd-radius-md);
            box-shadow: var(--sd-shadow-card);
            margin-bottom: 28px;
        }
        .sd-filter-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--sd-text-weak);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .sd-filter-group {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
        }
        .sd-select {
            padding: 9px 16px;
            border-radius: var(--sd-radius-sm);
            border: 1px solid var(--sd-line);
            background: #fff;
            font-family: var(--sd-font);
            font-size: 13px;
            color: var(--sd-text);
            min-width: 140px;
            cursor: pointer;
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
            appearance: none;
            -webkit-appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%235A6B7D' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 14px center;
            padding-right: 36px;
        }
        .sd-select:focus {
            border-color: var(--sd-primary);
            box-shadow: 0 0 0 3px rgba(11, 91, 255, 0.1);
            outline: none;
        }

        /* Rank list */
        .sd-rank-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 22px;
        }
        .sd-rank-card {
            background: var(--sd-card);
            border: 1px solid var(--sd-line);
            border-radius: var(--sd-radius-md);
            box-shadow: var(--sd-shadow-card);
            overflow: hidden;
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
        }
        .sd-rank-card:hover {
            box-shadow: var(--sd-shadow-hover);
            transform: translateY(-3px);
            border-color: rgba(11, 91, 255, 0.3);
        }
        .sd-rank-media {
            position: relative;
            aspect-ratio: 16 / 7;
            overflow: hidden;
            background: var(--sd-bg);
        }
        .sd-rank-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.45s ease;
        }
        .sd-rank-card:hover .sd-rank-media img {
            transform: scale(1.04);
        }
        .sd-rank-media-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 40%, rgba(11, 27, 43, 0.6) 100%);
        }
        .sd-rank-badge-num {
            position: absolute;
            top: 14px;
            left: 14px;
            background: var(--sd-dark);
            color: var(--sd-neon);
            border-radius: var(--sd-radius-sm);
            font-weight: 700;
            font-size: 20px;
            padding: 4px 14px;
            line-height: 1.4;
            z-index: 2;
        }
        .sd-rank-body {
            padding: 20px 22px 22px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .sd-rank-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--sd-text);
            margin: 0 0 8px;
            line-height: 1.4;
        }
        .sd-rank-info {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
            font-size: 14px;
            color: var(--sd-text-weak);
            margin-bottom: 12px;
        }
        .sd-trend {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-weight: 600;
            font-size: 13px;
            padding: 3px 10px;
            border-radius: 999px;
            line-height: 1.4;
        }
        .sd-trend.up {
            color: #12B76A;
            background: rgba(18, 183, 106, 0.1);
        }
        .sd-trend.down {
            color: var(--sd-accent);
            background: rgba(255, 61, 46, 0.1);
        }
        .sd-trend.flat {
            color: var(--sd-text-muted);
            background: rgba(136, 150, 166, 0.12);
        }
        .sd-rank-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 13px;
            color: var(--sd-text-muted);
            margin-top: auto;
            padding-top: 14px;
            border-top: 1px solid var(--sd-line);
        }
        .sd-rank-meta i {
            font-size: 13px;
            margin-right: 4px;
        }

        /* Spotlight banner */
        .sd-spotlight {
            position: relative;
            background: var(--sd-dark);
            border-radius: var(--sd-radius-lg);
            overflow: hidden;
            padding: 52px 42px;
            display: flex;
            align-items: center;
            gap: 40px;
            flex-wrap: wrap;
        }
        .sd-spotlight-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/d192f48cf27d31bd.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.25;
            z-index: 0;
        }
        .sd-spotlight::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(100deg, rgba(11, 27, 43, 0.94) 30%, rgba(11, 27, 43, 0.45) 100%);
            z-index: 0;
        }
        .sd-spotlight-content {
            position: relative;
            z-index: 1;
            flex: 1;
            min-width: 260px;
        }
        .sd-spotlight-title {
            font-size: 26px;
            font-weight: 700;
            color: #fff;
            margin: 0 0 12px;
            line-height: 1.3;
        }
        .sd-spotlight-text {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.78);
            max-width: 520px;
            line-height: 1.8;
            margin: 0 0 22px;
        }
        .sd-spotlight-action {
            position: relative;
            z-index: 1;
        }

        /* Data cards */
        .sd-data-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .sd-data-card {
            background: var(--sd-card);
            border: 1px solid var(--sd-line);
            border-radius: var(--sd-radius-md);
            padding: 24px 22px;
            box-shadow: var(--sd-shadow-card);
            transition: all 0.3s ease;
        }
        .sd-data-card:hover {
            box-shadow: var(--sd-shadow-hover);
            transform: translateY(-3px);
        }
        .sd-data-label {
            font-size: 13px;
            color: var(--sd-text-muted);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .sd-data-value {
            font-size: 34px;
            font-weight: 700;
            color: var(--sd-text);
            line-height: 1.2;
            margin-bottom: 10px;
        }
        .sd-data-value .unit {
            font-size: 15px;
            font-weight: 500;
            color: var(--sd-text-muted);
            margin-left: 4px;
        }
        .sd-progress {
            height: 8px;
            background: var(--sd-bg);
            border-radius: 999px;
            overflow: hidden;
            margin-top: 8px;
        }
        .sd-progress-bar {
            height: 100%;
            border-radius: 999px;
            background: var(--sd-primary);
            transition: width 0.6s ease;
        }
        .sd-data-card:nth-child(2) .sd-progress-bar {
            background: var(--sd-accent);
        }
        .sd-data-card:nth-child(3) .sd-progress-bar {
            background: var(--sd-neon);
        }
        .sd-data-card:nth-child(4) .sd-progress-bar {
            background: #8B5CF6;
        }
        .sd-data-note {
            font-size: 13px;
            color: var(--sd-text-muted);
            margin-top: 10px;
        }

        /* Related articles */
        .sd-related-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
        }
        .sd-related-item {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            padding: 16px 18px;
            background: var(--sd-card);
            border: 1px solid var(--sd-line);
            border-radius: var(--sd-radius-md);
            transition: all 0.25s ease;
            color: var(--sd-text);
        }
        .sd-related-item:hover {
            border-color: var(--sd-primary);
            box-shadow: var(--sd-shadow-card);
            transform: translateY(-2px);
        }
        .sd-related-icon {
            flex-shrink: 0;
            width: 40px;
            height: 40px;
            border-radius: var(--sd-radius-sm);
            background: rgba(11, 91, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--sd-primary);
            font-size: 16px;
        }
        .sd-related-content h4 {
            font-size: 15px;
            font-weight: 600;
            margin: 0 0 4px;
            line-height: 1.5;
            color: var(--sd-text);
        }
        .sd-related-content p {
            font-size: 13px;
            color: var(--sd-text-muted);
            margin: 0;
            line-height: 1.6;
        }

        /* Notes / accordion style */
        .sd-note-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
        }
        .sd-note-item {
            background: var(--sd-card);
            border: 1px solid var(--sd-line);
            border-radius: var(--sd-radius-md);
            padding: 20px 22px;
            display: flex;
            gap: 14px;
            align-items: flex-start;
            transition: all 0.25s ease;
        }
        .sd-note-item:hover {
            border-color: rgba(11, 91, 255, 0.35);
            box-shadow: var(--sd-shadow-card);
        }
        .sd-note-icon {
            flex-shrink: 0;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(198, 241, 53, 0.15);
            color: #5C7A00;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 700;
        }
        .sd-note-item h4 {
            font-size: 15px;
            font-weight: 600;
            margin: 0 0 6px;
            color: var(--sd-text);
        }
        .sd-note-item p {
            font-size: 14px;
            color: var(--sd-text-weak);
            line-height: 1.7;
            margin: 0;
        }

        /* CTA */
        .sd-cta-band {
            background: var(--sd-primary);
            border-radius: var(--sd-radius-lg);
            padding: 48px 40px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 32px;
            box-shadow: 0 20px 60px rgba(11, 91, 255, 0.25);
        }
        .sd-cta-content {
            flex: 1;
            min-width: 260px;
        }
        .sd-cta-title {
            font-size: 26px;
            font-weight: 700;
            color: #fff;
            margin: 0 0 10px;
            line-height: 1.3;
        }
        .sd-cta-text {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.7;
            margin: 0;
        }
        .sd-cta-form {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
            flex: 1;
            min-width: 260px;
            justify-content: flex-end;
        }
        .sd-input {
            padding: 13px 18px;
            border-radius: var(--sd-radius-md);
            border: 1px solid rgba(255, 255, 255, 0.35);
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            font-family: var(--sd-font);
            font-size: 14px;
            min-width: 220px;
            flex: 1;
            transition: all 0.2s ease;
            min-height: 44px;
        }
        .sd-input::placeholder {
            color: rgba(255, 255, 255, 0.6);
        }
        .sd-input:focus {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.18);
            box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.2);
            outline: none;
        }

        /* Footer */
        .sd-footer {
            background: var(--sd-dark);
            color: #fff;
            padding: 60px 0 28px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }
        .sd-footer-top {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .sd-footer-brand h3 {
            font-size: 20px;
            font-weight: 700;
            margin: 0 0 14px;
            display: flex;
            align-items: center;
            gap: 10px;
            color: #fff;
        }
        .sd-footer-brand p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            line-height: 1.75;
            max-width: 320px;
            margin: 0;
        }
        .sd-footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: rgba(255, 255, 255, 0.9);
            margin: 0 0 14px;
            letter-spacing: 0.03em;
        }
        .sd-footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .sd-footer-col ul li {
            margin-bottom: 8px;
        }
        .sd-footer-col ul li a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            transition: color 0.2s ease;
        }
        .sd-footer-col ul li a:hover {
            color: var(--sd-neon);
        }
        .sd-footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            padding-top: 22px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
        }
        .sd-footer-links {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .sd-footer-links a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 13px;
            transition: color 0.2s ease;
        }
        .sd-footer-links a:hover {
            color: var(--sd-neon);
        }
        .sd-footer-sep {
            color: rgba(255, 255, 255, 0.35);
        }

        /* Responsive */
        @media (max-width: 991px) {
            .sd-container {
                padding-left: 20px;
                padding-right: 20px;
            }
            .sd-section {
                padding: 56px 0;
            }
            .sd-cat-hero {
                min-height: 44vh;
                padding: 40px 0;
            }
            .sd-cat-hero-title {
                font-size: 30px;
            }
            .sd-rank-grid {
                grid-template-columns: 1fr;
            }
            .sd-data-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .sd-note-list {
                grid-template-columns: 1fr;
            }
            .sd-related-list {
                grid-template-columns: 1fr;
            }
            .sd-footer-top {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }

        @media (max-width: 767px) {
            .sd-container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .sd-section {
                padding: 44px 0;
            }
            .sd-section-title {
                font-size: 22px;
            }
            .sd-lead {
                font-size: 15px;
            }
            .sd-header-inner {
                flex-wrap: wrap;
                gap: 12px;
            }
            .sd-header-nav {
                display: none;
            }
            .sd-nav-toggle {
                display: inline-flex;
                margin-left: auto;
            }
            .sd-header-cta {
                display: none;
            }
            .sd-header-nav-mobile .sd-header-cta-mobile {
                display: inline-flex;
            }
            .sd-cat-hero {
                min-height: 40vh;
                padding: 32px 0;
            }
            .sd-cat-hero-title {
                font-size: 26px;
            }
            .sd-cat-hero-desc {
                font-size: 15px;
            }
            .sd-rank-card {
                border-radius: var(--sd-radius-md);
            }
            .sd-rank-media {
                aspect-ratio: 16 / 9;
            }
            .sd-spotlight {
                padding: 32px 24px;
                gap: 24px;
            }
            .sd-spotlight-title {
                font-size: 21px;
            }
            .sd-data-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .sd-data-value {
                font-size: 28px;
            }
            .sd-cta-band {
                padding: 32px 24px;
                gap: 20px;
            }
            .sd-cta-title {
                font-size: 21px;
            }
            .sd-cta-form {
                justify-content: stretch;
            }
            .sd-input {
                min-width: 100%;
            }
            .sd-footer-top {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .sd-footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 10px;
            }
            .sd-filter-bar {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        @media (max-width: 520px) {
            .sd-cat-hero-title {
                font-size: 22px;
            }
            .sd-cat-hero-desc {
                font-size: 14px;
            }
            .sd-cat-hero-chips .sd-chip {
                padding: 6px 12px;
                font-size: 12px;
            }
            .sd-rank-body {
                padding: 16px 16px 18px;
            }
            .sd-rank-title {
                font-size: 15px;
            }
            .sd-data-card {
                padding: 18px 16px;
            }
            .sd-spotlight {
                padding: 24px 18px;
            }
            .sd-cta-band {
                padding: 24px 18px;
            }
            .sd-btn {
                padding: 12px 20px;
                font-size: 14px;
            }
        }

/* roulang page: category4 */
:root {
            --sd-primary: #0B5FFF;
            --sd-primary-dark: #0848C8;
            --sd-accent: #FF3D2E;
            --sd-neon: #C6F135;
            --sd-bg: #F5F7FA;
            --sd-dark: #0B1B2B;
            --sd-dark-2: #112A3E;
            --sd-card: #FFFFFF;
            --sd-text: #0B1B2B;
            --sd-text-weak: #5A6B7D;
            --sd-text-muted: #8896A6;
            --sd-line: #E3E8EF;
            --sd-radius-sm: 8px;
            --sd-radius-md: 14px;
            --sd-radius-lg: 22px;
            --sd-shadow-card: 0 8px 24px rgba(11, 27, 43, 0.06);
            --sd-shadow-hover: 0 16px 40px rgba(13, 91, 255, 0.16);
            --sd-font: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, sans-serif;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--sd-font);
            background-color: var(--sd-bg);
            color: var(--sd-text);
            line-height: 1.85;
            margin: 0;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--sd-primary);
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: var(--sd-primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .sd-container {
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 28px;
            padding-right: 28px;
        }
        .sd-section {
            padding: 72px 0;
            position: relative;
        }
        .sd-section-tight {
            padding: 48px 0;
        }
        .sd-bg-dark {
            background: var(--sd-dark);
        }
        .sd-bg-dark .sd-section-title {
            color: #fff;
        }
        .sd-bg-dark .sd-text-weak {
            color: rgba(255, 255, 255, 0.72);
        }
        .sd-section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--sd-primary);
            background: rgba(11, 91, 255, 0.07);
            padding: 6px 14px;
            border-radius: 999px;
            margin-bottom: 18px;
        }
        .sd-section-title {
            font-size: 28px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--sd-text);
            margin: 0 0 14px;
        }
        .sd-lead {
            font-size: 17px;
            color: var(--sd-text-weak);
            line-height: 1.85;
            max-width: 720px;
        }
        .sd-text-weak {
            color: var(--sd-text-weak);
        }
        .sd-text-muted {
            color: var(--sd-text-muted);
            font-size: 14px;
        }
        .sd-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            border-radius: var(--sd-radius-md);
            padding: 13px 26px;
            font-size: 15px;
            line-height: 1.2;
            transition: all 0.2s ease;
            border: none;
            cursor: pointer;
            min-height: 44px;
            text-align: center;
        }
        .sd-btn:focus-visible {
            outline: 2px solid var(--sd-primary);
            outline-offset: 2px;
        }
        .sd-btn-primary {
            background: var(--sd-primary);
            color: #fff;
        }
        .sd-btn-primary:hover {
            background: var(--sd-primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 10px 24px rgba(11, 91, 255, 0.32);
        }
        .sd-btn-primary:active {
            transform: translateY(0);
            box-shadow: none;
        }
        .sd-btn-outline-light {
            background: transparent;
            color: #fff;
            border: 1.5px solid rgba(255, 255, 255, 0.5);
        }
        .sd-btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
            transform: translateY(-2px);
        }
        .sd-btn-outline {
            background: transparent;
            color: var(--sd-text);
            border: 1.5px solid var(--sd-line);
        }
        .sd-btn-outline:hover {
            background: var(--sd-bg);
            border-color: var(--sd-primary);
            color: var(--sd-primary);
            transform: translateY(-2px);
        }
        .sd-btn-accent {
            background: var(--sd-accent);
            color: #fff;
        }
        .sd-btn-accent:hover {
            background: #d92b1d;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 10px 24px rgba(255, 61, 46, 0.3);
        }
        .sd-btn-sm {
            padding: 9px 18px;
            font-size: 13px;
            min-height: 38px;
        }
        .sd-chip {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 500;
            border-radius: 999px;
            padding: 7px 16px;
            font-size: 13px;
            background: var(--sd-bg);
            color: var(--sd-text);
            border: 1px solid var(--sd-line);
            transition: all 0.2s ease;
            white-space: nowrap;
            cursor: pointer;
        }
        .sd-chip:hover {
            border-color: var(--sd-primary);
            background: rgba(11, 91, 255, 0.06);
            color: var(--sd-primary);
        }
        .sd-chip.active {
            background: var(--sd-primary);
            color: #fff;
            border-color: var(--sd-primary);
        }
        .sd-card {
            background: var(--sd-card);
            border: 1px solid var(--sd-line);
            border-radius: var(--sd-radius-md);
            box-shadow: var(--sd-shadow-card);
            transition: all 0.3s ease;
            overflow: hidden;
        }
        .sd-card:hover {
            box-shadow: var(--sd-shadow-hover);
            transform: translateY(-3px);
        }
        .sd-card-body {
            padding: 22px;
        }
        .sd-badge {
            display: inline-block;
            padding: 4px 12px;
            font-size: 12px;
            font-weight: 600;
            border-radius: 999px;
            background: rgba(255, 61, 46, 0.1);
            color: var(--sd-accent);
            transition: all 0.2s ease;
        }
        .sd-badge-primary {
            background: rgba(11, 91, 255, 0.1);
            color: var(--sd-primary);
        }
        .sd-badge-dark {
            background: rgba(11, 27, 43, 0.08);
            color: var(--sd-dark);
        }
        .sd-header {
            background: #fff;
            border-bottom: 1px solid var(--sd-line);
            position: sticky;
            top: 0;
            z-index: 1030;
            padding: 14px 0;
        }
        .sd-header-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            flex-wrap: wrap;
        }
        .sd-logo {
            font-size: 22px;
            font-weight: 700;
            color: var(--sd-text);
            display: flex;
            align-items: center;
            gap: 10px;
            white-space: nowrap;
        }
        .sd-logo:hover {
            color: var(--sd-primary);
        }
        .sd-logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--sd-primary);
            color: #fff;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
        }
        .sd-header-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .sd-header-cta {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .sd-header-toggle {
            display: none;
            border: none;
            background: transparent;
            font-size: 24px;
            color: var(--sd-text);
            cursor: pointer;
            padding: 8px;
            border-radius: 8px;
            transition: background 0.2s ease;
        }
        .sd-header-toggle:hover {
            background: var(--sd-bg);
        }
        .sd-mobile-menu {
            display: none;
        }
        .sd-mobile-menu.show {
            display: block;
            padding-top: 12px;
        }
        .sd-mobile-menu .sd-chip {
            display: block;
            width: 100%;
            text-align: left;
            margin-bottom: 6px;
            border-radius: 12px;
        }
        .sd-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--sd-text-muted);
            margin-bottom: 12px;
            flex-wrap: wrap;
        }
        .sd-breadcrumb a {
            color: var(--sd-text-muted);
            transition: color 0.2s ease;
        }
        .sd-breadcrumb a:hover {
            color: var(--sd-primary);
        }
        .sd-breadcrumb-sep {
            color: var(--sd-text-muted);
        }
        .sd-page-head {
            background: linear-gradient(135deg, #0B1B2B 0%, #112A3E 60%, #0B5FFF 100%);
            padding: 64px 0 72px;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .sd-page-head::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(198, 241, 53, 0.15) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .sd-page-head::after {
            content: '';
            position: absolute;
            bottom: -20%;
            left: 20%;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(11, 91, 255, 0.25) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .sd-page-head .sd-container {
            position: relative;
            z-index: 1;
        }
        .sd-page-head h1 {
            font-size: 36px;
            font-weight: 700;
            line-height: 1.25;
            margin: 0 0 16px;
            color: #fff;
        }
        .sd-page-head .sd-lead {
            color: rgba(255, 255, 255, 0.8);
            max-width: 760px;
            font-size: 16px;
        }
        .sd-page-head .sd-breadcrumb {
            color: rgba(255, 255, 255, 0.6);
        }
        .sd-page-head .sd-breadcrumb a {
            color: rgba(255, 255, 255, 0.7);
        }
        .sd-page-head .sd-breadcrumb a:hover {
            color: #fff;
        }
        .sd-page-head .sd-breadcrumb-sep {
            color: rgba(255, 255, 255, 0.4);
        }
        .sd-head-chips {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 24px;
        }
        .sd-head-chips .sd-chip {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.18);
            color: rgba(255, 255, 255, 0.85);
        }
        .sd-head-chips .sd-chip:hover {
            background: rgba(255, 255, 255, 0.16);
            border-color: rgba(255, 255, 255, 0.4);
            color: #fff;
        }
        .sd-head-chips .sd-chip.active {
            background: var(--sd-primary);
            color: #fff;
            border-color: var(--sd-primary);
        }
        .sd-filter-bar {
            background: #fff;
            border: 1px solid var(--sd-line);
            border-radius: var(--sd-radius-md);
            padding: 18px 20px;
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
            box-shadow: var(--sd-shadow-card);
        }
        .sd-filter-label {
            font-size: 13px;
            font-weight: 600;
            color: var(--sd-text-weak);
            margin-right: 4px;
            white-space: nowrap;
        }
        .sd-article-card {
            background: var(--sd-card);
            border: 1px solid var(--sd-line);
            border-radius: var(--sd-radius-md);
            box-shadow: var(--sd-shadow-card);
            overflow: hidden;
            transition: all 0.3s ease;
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .sd-article-card:hover {
            box-shadow: var(--sd-shadow-hover);
            transform: translateY(-3px);
        }
        .sd-article-card-img-wrap {
            position: relative;
            aspect-ratio: 16/9;
            overflow: hidden;
            background: #e9edf2;
        }
        .sd-article-card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .sd-article-card:hover .sd-article-card-img-wrap img {
            transform: scale(1.04);
        }
        .sd-article-card-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            z-index: 2;
        }
        .sd-article-card-body {
            padding: 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .sd-article-date {
            font-size: 12px;
            color: var(--sd-text-muted);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .sd-article-card-title {
            font-size: 17px;
            font-weight: 700;
            line-height: 1.45;
            margin: 0 0 10px;
            color: var(--sd-text);
        }
        .sd-article-card-title a {
            color: var(--sd-text);
            transition: color 0.2s ease;
        }
        .sd-article-card-title a:hover {
            color: var(--sd-primary);
        }
        .sd-article-card-excerpt {
            font-size: 14px;
            color: var(--sd-text-weak);
            line-height: 1.75;
            flex: 1;
            margin-bottom: 14px;
        }
        .sd-article-card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 10px;
        }
        .sd-article-card-link {
            font-size: 13px;
            font-weight: 600;
            color: var(--sd-primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: all 0.2s ease;
        }
        .sd-article-card-link:hover {
            color: var(--sd-primary-dark);
            gap: 8px;
        }
        .sd-banner {
            border-radius: var(--sd-radius-lg);
            overflow: hidden;
            position: relative;
            background: linear-gradient(135deg, #0B1B2B 0%, #112A3E 55%, #0B5FFF 100%);
            color: #fff;
            padding: 48px 40px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 30px;
            flex-wrap: wrap;
        }
        .sd-banner::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -5%;
            width: 350px;
            height: 350px;
            background: radial-gradient(circle, rgba(198, 241, 53, 0.2) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .sd-banner-content {
            position: relative;
            z-index: 1;
            flex: 1;
            min-width: 260px;
        }
        .sd-banner-content h3 {
            font-size: 24px;
            font-weight: 700;
            margin: 0 0 10px;
            color: #fff;
        }
        .sd-banner-content p {
            color: rgba(255, 255, 255, 0.78);
            margin: 0 0 18px;
            font-size: 15px;
        }
        .sd-banner-action {
            position: relative;
            z-index: 1;
            flex-shrink: 0;
        }
        .sd-stat-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 18px;
        }
        .sd-stat-card {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--sd-radius-md);
            padding: 24px;
            text-align: center;
            transition: all 0.3s ease;
        }
        .sd-stat-card:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.25);
            transform: translateY(-2px);
        }
        .sd-stat-number {
            font-size: 34px;
            font-weight: 700;
            color: var(--sd-neon);
            line-height: 1.2;
            margin-bottom: 6px;
        }
        .sd-stat-unit {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
        }
        .sd-related-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .sd-related-list li {
            padding: 12px 0;
            border-bottom: 1px solid var(--sd-line);
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .sd-related-list li:last-child {
            border-bottom: none;
        }
        .sd-related-list a {
            color: var(--sd-text);
            font-size: 15px;
            font-weight: 500;
            transition: color 0.2s ease;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sd-related-list a:hover {
            color: var(--sd-primary);
        }
        .sd-related-list i {
            color: var(--sd-text-muted);
            font-size: 12px;
        }
        .sd-faq-item {
            border: 1px solid var(--sd-line);
            border-radius: var(--sd-radius-md);
            margin-bottom: 14px;
            overflow: hidden;
            background: #fff;
            transition: all 0.2s ease;
        }
        .sd-faq-item details {
            padding: 0;
        }
        .sd-faq-item summary {
            list-style: none;
            cursor: pointer;
            padding: 18px 20px;
            font-weight: 600;
            font-size: 15px;
            color: var(--sd-text);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            transition: all 0.2s ease;
            user-select: none;
        }
        .sd-faq-item summary::-webkit-details-marker {
            display: none;
        }
        .sd-faq-item summary::after {
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 13px;
            color: var(--sd-text-muted);
            transition: transform 0.3s ease;
        }
        .sd-faq-item[open] summary::after {
            transform: rotate(180deg);
        }
        .sd-faq-item summary:hover {
            background: rgba(11, 91, 255, 0.04);
        }
        .sd-faq-item[open] summary {
            background: rgba(11, 91, 255, 0.04);
            border-bottom: 1px solid var(--sd-line);
        }
        .sd-faq-content {
            padding: 18px 20px;
            font-size: 14px;
            color: var(--sd-text-weak);
            line-height: 1.8;
        }
        .sd-cta-box {
            background: linear-gradient(135deg, #0B5FFF 0%, #0848C8 100%);
            border-radius: var(--sd-radius-lg);
            padding: 52px 40px;
            color: #fff;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .sd-cta-box::before {
            content: '';
            position: absolute;
            top: -40%;
            left: 10%;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(198, 241, 53, 0.25) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .sd-cta-box h3 {
            font-size: 26px;
            font-weight: 700;
            color: #fff;
            margin: 0 0 12px;
            position: relative;
            z-index: 1;
        }
        .sd-cta-box p {
            color: rgba(255, 255, 255, 0.82);
            margin: 0 auto 24px;
            max-width: 560px;
            font-size: 15px;
            position: relative;
            z-index: 1;
        }
        .sd-cta-form {
            display: flex;
            gap: 10px;
            justify-content: center;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }
        .sd-cta-form input[type="email"],
        .sd-cta-form input[type="text"] {
            background: rgba(255, 255, 255, 0.15);
            border: 1px solid rgba(255, 255, 255, 0.3);
            border-radius: var(--sd-radius-md);
            padding: 13px 18px;
            color: #fff;
            font-size: 14px;
            min-width: 260px;
            outline: none;
            transition: all 0.2s ease;
        }
        .sd-cta-form input::placeholder {
            color: rgba(255, 255, 255, 0.5);
        }
        .sd-cta-form input:focus {
            border-color: var(--sd-neon);
            background: rgba(255, 255, 255, 0.2);
            box-shadow: 0 0 0 3px rgba(198, 241, 53, 0.2);
        }
        .sd-footer {
            background: var(--sd-dark);
            color: rgba(255, 255, 255, 0.75);
            padding: 60px 0 24px;
        }
        .sd-footer-top {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 36px;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        .sd-footer-brand h3 {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin: 0 0 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sd-footer-brand p {
            font-size: 13px;
            line-height: 1.75;
            color: rgba(255, 255, 255, 0.6);
            margin: 0;
        }
        .sd-footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            margin: 0 0 12px;
        }
        .sd-footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .sd-footer-col ul li {
            margin-bottom: 8px;
        }
        .sd-footer-col ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 13px;
            transition: color 0.2s ease;
        }
        .sd-footer-col ul li a:hover {
            color: var(--sd-neon);
        }
        .sd-footer-bottom {
            padding-top: 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
        }
        .sd-footer-links {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .sd-footer-links a {
            color: rgba(255, 255, 255, 0.5);
            transition: color 0.2s ease;
        }
        .sd-footer-links a:hover {
            color: var(--sd-neon);
        }
        .sd-footer-sep {
            color: rgba(255, 255, 255, 0.3);
        }
        @media (max-width: 991px) {
            .sd-footer-top {
                grid-template-columns: 1fr 1fr;
            }
            .sd-stat-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .sd-page-head h1 {
                font-size: 30px;
            }
        }
        @media (max-width: 767px) {
            .sd-header-nav {
                display: none;
            }
            .sd-header-toggle {
                display: inline-flex;
                align-items: center;
                justify-content: center;
                min-height: 44px;
                min-width: 44px;
            }
            .sd-mobile-menu .sd-header-nav-mobile {
                display: flex;
                flex-direction: column;
                gap: 6px;
                padding: 12px 0;
            }
            .sd-footer-top {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .sd-footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .sd-stat-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .sd-stat-card {
                padding: 16px;
            }
            .sd-stat-number {
                font-size: 26px;
            }
            .sd-page-head {
                padding: 42px 0 52px;
            }
            .sd-page-head h1 {
                font-size: 26px;
            }
            .sd-section {
                padding: 52px 0;
            }
            .sd-section-title {
                font-size: 23px;
            }
            .sd-banner {
                padding: 32px 24px;
                flex-direction: column;
                align-items: flex-start;
            }
            .sd-cta-box {
                padding: 36px 24px;
            }
            .sd-cta-form input[type="email"],
            .sd-cta-form input[type="text"] {
                min-width: 100%;
            }
            .sd-container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .sd-filter-bar {
                padding: 14px 16px;
                gap: 6px;
            }
            .sd-article-card-title {
                font-size: 16px;
            }
        }
        @media (max-width: 575px) {
            .sd-stat-grid {
                grid-template-columns: 1fr;
            }
            .sd-header-top {
                gap: 10px;
            }
            .sd-logo {
                font-size: 18px;
            }
            .sd-logo-icon {
                width: 30px;
                height: 30px;
                font-size: 13px;
                border-radius: 8px;
            }
        }

/* roulang page: category5 */
:root {
            --sd-primary: #0B5FFF;
            --sd-primary-dark: #0848C8;
            --sd-accent: #FF3D2E;
            --sd-neon: #C6F135;
            --sd-bg: #F5F7FA;
            --sd-dark: #0B1B2B;
            --sd-dark-2: #112A3E;
            --sd-card: #FFFFFF;
            --sd-text: #0B1B2B;
            --sd-text-weak: #5A6B7D;
            --sd-text-muted: #8896A6;
            --sd-line: #E3E8EF;
            --sd-radius-sm: 8px;
            --sd-radius-md: 14px;
            --sd-radius-lg: 22px;
            --sd-shadow-card: 0 8px 24px rgba(11, 27, 43, 0.06);
            --sd-shadow-hover: 0 16px 40px rgba(13, 91, 255, 0.16);
            --sd-font: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, sans-serif;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--sd-font);
            background-color: var(--sd-bg);
            color: var(--sd-text);
            line-height: 1.85;
            margin: 0;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: var(--sd-primary);
            text-decoration: none;
            transition: color 0.2s ease;
        }

        a:hover {
            color: var(--sd-primary-dark);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        .sd-container {
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 28px;
            padding-right: 28px;
        }

        .sd-section {
            padding: 88px 0;
            position: relative;
        }

        .sd-section-tight {
            padding: 56px 0;
        }

        .sd-bg-dark {
            background-color: var(--sd-dark);
            color: #fff;
        }

        .sd-bg-dark .sd-section-title {
            color: #fff;
        }

        .sd-bg-dark .sd-text-weak {
            color: rgba(255, 255, 255, 0.72);
        }

        .sd-section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--sd-primary);
            background: rgba(11, 91, 255, 0.07);
            padding: 6px 14px;
            border-radius: 999px;
            margin-bottom: 18px;
        }

        .sd-section-title {
            font-size: 28px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--sd-text);
            margin: 0 0 14px;
        }

        .sd-lead {
            font-size: 17px;
            color: var(--sd-text-weak);
            line-height: 1.85;
            max-width: 720px;
        }

        .sd-text-weak {
            color: var(--sd-text-weak);
        }

        .sd-text-muted {
            color: var(--sd-text-muted);
            font-size: 14px;
        }

        .sd-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            border-radius: var(--sd-radius-md);
            padding: 13px 26px;
            font-size: 15px;
            line-height: 1.2;
            transition: all 0.2s ease;
            border: none;
            cursor: pointer;
            min-height: 44px;
            text-align: center;
        }

        .sd-btn:focus-visible {
            outline: 2px solid var(--sd-primary);
            outline-offset: 2px;
        }

        .sd-btn-primary {
            background: var(--sd-primary);
            color: #fff;
        }

        .sd-btn-primary:hover {
            background: var(--sd-primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 10px 24px rgba(11, 91, 255, 0.32);
        }

        .sd-btn-primary:active {
            transform: translateY(0);
            box-shadow: none;
        }

        .sd-btn-outline-light {
            background: transparent;
            color: #fff;
            border: 1.5px solid rgba(255, 255, 255, 0.5);
        }

        .sd-btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
            transform: translateY(-2px);
        }

        .sd-btn-outline {
            background: transparent;
            color: var(--sd-text);
            border: 1.5px solid var(--sd-line);
        }

        .sd-btn-outline:hover {
            background: var(--sd-bg);
            border-color: var(--sd-primary);
            color: var(--sd-primary);
            transform: translateY(-2px);
        }

        .sd-btn-accent {
            background: var(--sd-accent);
            color: #fff;
        }

        .sd-btn-accent:hover {
            background: #d92b1d;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 10px 24px rgba(255, 61, 46, 0.3);
        }

        .sd-btn-sm {
            padding: 9px 18px;
            font-size: 13px;
            min-height: 38px;
        }

        .sd-chip {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 500;
            border-radius: 999px;
            padding: 7px 16px;
            font-size: 13px;
            background: var(--sd-bg);
            color: var(--sd-text);
            border: 1px solid var(--sd-line);
            transition: all 0.2s ease;
            white-space: nowrap;
        }

        .sd-chip:hover {
            border-color: var(--sd-primary);
            background: rgba(11, 91, 255, 0.06);
            color: var(--sd-primary);
        }

        .sd-chip.active {
            background: var(--sd-primary);
            color: #fff;
            border-color: var(--sd-primary);
        }

        .sd-card {
            background: var(--sd-card);
            border: 1px solid var(--sd-line);
            border-radius: var(--sd-radius-md);
            box-shadow: var(--sd-shadow-card);
            transition: all 0.3s ease;
            overflow: hidden;
        }

        .sd-card:hover {
            box-shadow: var(--sd-shadow-hover);
            transform: translateY(-3px);
        }

        .sd-card-body {
            padding: 22px;
        }

        .sd-badge {
            display: inline-block;
            padding: 4px 12px;
            font-size: 12px;
            font-weight: 600;
            border-radius: 999px;
            background: rgba(11, 91, 255, 0.08);
            color: var(--sd-primary);
            border: 1px solid rgba(11, 91, 255, 0.18);
            transition: all 0.2s ease;
        }

        .sd-badge:hover {
            background: rgba(11, 91, 255, 0.15);
        }

        .sd-badge-accent {
            background: rgba(255, 61, 46, 0.1);
            color: var(--sd-accent);
            border-color: rgba(255, 61, 46, 0.2);
        }

        .sd-badge-neon {
            background: rgba(198, 241, 53, 0.2);
            color: #4a5a00;
            border-color: rgba(198, 241, 53, 0.5);
        }

        /* Header */
        .sd-header {
            background: #fff;
            border-bottom: 1px solid var(--sd-line);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 12px rgba(11, 27, 43, 0.04);
        }

        .sd-header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            padding: 14px 0;
        }

        .sd-logo {
            font-size: 21px;
            font-weight: 700;
            color: var(--sd-text);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            text-decoration: none;
            white-space: nowrap;
        }

        .sd-logo:hover {
            color: var(--sd-primary);
        }

        .sd-logo i {
            color: var(--sd-primary);
            font-size: 22px;
        }

        .sd-header-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
        }

        .sd-header-cta {
            margin-left: 6px;
        }

        .sd-nav-toggle {
            display: none;
            background: none;
            border: 1px solid var(--sd-line);
            border-radius: var(--sd-radius-sm);
            padding: 8px 12px;
            font-size: 18px;
            color: var(--sd-text);
            cursor: pointer;
            transition: all 0.2s ease;
        }

        .sd-nav-toggle:hover {
            border-color: var(--sd-primary);
            color: var(--sd-primary);
        }

        .sd-nav-toggle:focus-visible {
            outline: 2px solid var(--sd-primary);
            outline-offset: 2px;
        }

        /* Hero / H1 area */
        .sd-page-header {
            background: url('/assets/images/879ade648986fdc0.webp') center center / cover no-repeat;
            background-color: var(--sd-dark);
            padding: 56px 0 48px;
            position: relative;
            min-height: 320px;
            display: flex;
            align-items: center;
        }

        .sd-page-header::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(11, 27, 43, 0.88) 0%, rgba(11, 27, 43, 0.72) 100%);
        }

        .sd-page-header .sd-container {
            position: relative;
            z-index: 1;
        }

        .sd-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 18px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            flex-wrap: wrap;
        }

        .sd-breadcrumb a {
            color: rgba(255, 255, 255, 0.75);
            text-decoration: none;
            transition: color 0.2s ease;
        }

        .sd-breadcrumb a:hover {
            color: var(--sd-neon);
        }

        .sd-breadcrumb .sd-breadcrumb-sep {
            color: rgba(255, 255, 255, 0.4);
        }

        .sd-breadcrumb .sd-breadcrumb-current {
            color: #fff;
            font-weight: 500;
        }

        .sd-page-header h1 {
            font-size: 32px;
            font-weight: 700;
            color: #fff;
            line-height: 1.3;
            margin: 0 0 14px;
        }

        .sd-page-header .sd-lead {
            color: rgba(255, 255, 255, 0.78);
            max-width: 680px;
            font-size: 16px;
        }

        .sd-chip-group {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            margin-top: 20px;
        }

        .sd-chip-light {
            background: rgba(255, 255, 255, 0.12);
            color: rgba(255, 255, 255, 0.9);
            border-color: rgba(255, 255, 255, 0.25);
        }

        .sd-chip-light:hover {
            background: rgba(255, 255, 255, 0.22);
            border-color: var(--sd-neon);
            color: #fff;
        }

        .sd-chip-light.active {
            background: var(--sd-primary);
            color: #fff;
            border-color: var(--sd-primary);
        }

        /* Filter bar */
        .sd-filter-bar {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
            padding: 16px 0;
            border-bottom: 1px solid var(--sd-line);
            margin-bottom: 32px;
        }

        .sd-filter-bar-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--sd-text);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .sd-filter-bar-label i {
            color: var(--sd-primary);
        }

        /* Equipment cards */
        .sd-equipment-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }

        .sd-equipment-card {
            display: flex;
            flex-direction: column;
        }

        .sd-equipment-card .sd-card-img-wrap {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--sd-bg);
        }

        .sd-equipment-card .sd-card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .sd-equipment-card:hover .sd-card-img-wrap img {
            transform: scale(1.03);
        }

        .sd-card-img-badge {
            position: absolute;
            top: 14px;
            left: 14px;
            z-index: 2;
        }

        .sd-card-date {
            font-size: 13px;
            color: var(--sd-text-muted);
            display: flex;
            align-items: center;
            gap: 6px;
            margin-bottom: 8px;
        }

        .sd-card-date i {
            color: var(--sd-primary);
        }

        .sd-card-title-link {
            font-size: 18px;
            font-weight: 700;
            color: var(--sd-text);
            line-height: 1.4;
            margin-bottom: 8px;
            text-decoration: none;
            display: inline-block;
            transition: color 0.2s ease;
        }

        .sd-card-title-link:hover {
            color: var(--sd-primary);
        }

        .sd-card-excerpt {
            font-size: 15px;
            color: var(--sd-text-weak);
            line-height: 1.75;
            margin-bottom: 14px;
            flex-grow: 1;
        }

        .sd-read-more {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            font-weight: 600;
            font-size: 14px;
            color: var(--sd-primary);
            text-decoration: none;
            transition: all 0.2s ease;
        }

        .sd-read-more i {
            transition: transform 0.2s ease;
        }

        .sd-read-more:hover {
            color: var(--sd-primary-dark);
        }

        .sd-read-more:hover i {
            transform: translateX(4px);
        }

        /* Feature banner */
        .sd-feature-banner {
            background: var(--sd-dark);
            border-radius: var(--sd-radius-lg);
            padding: 40px 40px;
            display: flex;
            align-items: center;
            gap: 32px;
            flex-wrap: wrap;
            position: relative;
            overflow: hidden;
        }

        .sd-feature-banner::after {
            content: '';
            position: absolute;
            right: -60px;
            top: -60px;
            width: 240px;
            height: 240px;
            background: rgba(11, 91, 255, 0.25);
            border-radius: 50%;
            pointer-events: none;
        }

        .sd-feature-banner-content {
            flex: 1;
            min-width: 260px;
            position: relative;
            z-index: 1;
        }

        .sd-feature-banner-image {
            flex: 0 0 300px;
            border-radius: var(--sd-radius-md);
            overflow: hidden;
            position: relative;
            z-index: 1;
        }

        .sd-feature-banner-image img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: var(--sd-radius-md);
        }

        .sd-feature-banner h2 {
            font-size: 24px;
            font-weight: 700;
            color: #fff;
            line-height: 1.4;
            margin: 0 0 12px;
        }

        .sd-feature-banner p {
            color: rgba(255, 255, 255, 0.75);
            font-size: 15px;
            line-height: 1.8;
            margin: 0 0 18px;
        }

        /* Data cards */
        .sd-data-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 18px;
        }

        .sd-data-item {
            background: var(--sd-card);
            border: 1px solid var(--sd-line);
            border-radius: var(--sd-radius-md);
            padding: 22px 20px;
            text-align: center;
            transition: all 0.3s ease;
        }

        .sd-data-item:hover {
            box-shadow: var(--sd-shadow-hover);
            transform: translateY(-3px);
            border-color: rgba(11, 91, 255, 0.3);
        }

        .sd-data-number {
            font-size: 36px;
            font-weight: 700;
            color: var(--sd-primary);
            line-height: 1.2;
            margin-bottom: 6px;
        }

        .sd-data-number span {
            font-size: 18px;
            font-weight: 600;
        }

        .sd-data-label {
            font-size: 15px;
            font-weight: 600;
            color: var(--sd-text);
            margin-bottom: 4px;
        }

        .sd-data-desc {
            font-size: 13px;
            color: var(--sd-text-weak);
            line-height: 1.6;
        }

        .sd-progress-wrap {
            margin-bottom: 12px;
        }

        .sd-progress-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 6px;
        }

        .sd-progress-name {
            font-size: 14px;
            font-weight: 600;
            color: var(--sd-text);
        }

        .sd-progress-value {
            font-size: 13px;
            font-weight: 600;
            color: var(--sd-primary);
        }

        .sd-progress-bar-bg {
            background: var(--sd-bg);
            border-radius: 999px;
            height: 10px;
            overflow: hidden;
        }

        .sd-progress-bar-fill {
            height: 100%;
            background: var(--sd-primary);
            border-radius: 999px;
            transition: width 0.6s ease;
        }

        .sd-progress-bar-fill.accent {
            background: var(--sd-accent);
        }

        .sd-progress-bar-fill.neon {
            background: #a8d31f;
        }

        /* Related links */
        .sd-related-links {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 12px;
        }

        .sd-related-link-item {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 14px 18px;
            background: var(--sd-card);
            border: 1px solid var(--sd-line);
            border-radius: var(--sd-radius-sm);
            font-size: 15px;
            font-weight: 500;
            color: var(--sd-text);
            transition: all 0.2s ease;
        }

        .sd-related-link-item:hover {
            border-color: var(--sd-primary);
            background: rgba(11, 91, 255, 0.04);
            color: var(--sd-primary);
            transform: translateX(4px);
        }

        .sd-related-link-item i {
            color: var(--sd-primary);
            flex-shrink: 0;
        }

        /* Info items */
        .sd-info-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 18px;
        }

        .sd-info-item {
            background: var(--sd-card);
            border: 1px solid var(--sd-line);
            border-radius: var(--sd-radius-md);
            padding: 24px;
            transition: all 0.3s ease;
        }

        .sd-info-item:hover {
            box-shadow: var(--sd-shadow-card);
            border-color: rgba(11, 91, 255, 0.22);
        }

        .sd-info-icon {
            width: 40px;
            height: 40px;
            border-radius: var(--sd-radius-sm);
            background: rgba(11, 91, 255, 0.08);
            color: var(--sd-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            margin-bottom: 14px;
        }

        .sd-info-item h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--sd-text);
            margin: 0 0 8px;
        }

        .sd-info-item p {
            font-size: 14px;
            color: var(--sd-text-weak);
            line-height: 1.75;
            margin: 0;
        }

        /* Subscribe CTA */
        .sd-subscribe-box {
            background: var(--sd-dark);
            border-radius: var(--sd-radius-lg);
            padding: 48px 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .sd-subscribe-box::before {
            content: '';
            position: absolute;
            left: -40px;
            bottom: -40px;
            width: 200px;
            height: 200px;
            background: rgba(198, 241, 53, 0.1);
            border-radius: 50%;
            pointer-events: none;
        }

        .sd-subscribe-box::after {
            content: '';
            position: absolute;
            right: -30px;
            top: -30px;
            width: 160px;
            height: 160px;
            background: rgba(11, 91, 255, 0.25);
            border-radius: 50%;
            pointer-events: none;
        }

        .sd-subscribe-box .sd-section-title {
            color: #fff;
            margin-bottom: 8px;
        }

        .sd-subscribe-box .sd-lead {
            color: rgba(255, 255, 255, 0.72);
            margin: 0 auto 24px;
            max-width: 520px;
        }

        .sd-subscribe-form {
            display: flex;
            gap: 10px;
            max-width: 440px;
            margin: 0 auto;
            flex-wrap: wrap;
            justify-content: center;
            position: relative;
            z-index: 1;
        }

        .sd-subscribe-input {
            flex: 1;
            min-width: 200px;
            padding: 12px 18px;
            border-radius: var(--sd-radius-md);
            border: 1px solid rgba(255, 255, 255, 0.28);
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
            font-size: 15px;
            font-family: var(--sd-font);
            transition: all 0.2s ease;
            min-height: 44px;
        }

        .sd-subscribe-input::placeholder {
            color: rgba(255, 255, 255, 0.5);
        }

        .sd-subscribe-input:focus {
            outline: none;
            border-color: var(--sd-neon);
            background: rgba(255, 255, 255, 0.14);
            box-shadow: 0 0 0 3px rgba(198, 241, 53, 0.2);
        }

        /* Footer */
        .sd-footer {
            background: var(--sd-dark);
            color: rgba(255, 255, 255, 0.68);
            padding: 56px 0 28px;
            margin-top: 0;
        }

        .sd-footer-top {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 32px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .sd-footer-brand h3 {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin: 0 0 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .sd-footer-brand p {
            font-size: 14px;
            line-height: 1.75;
            color: rgba(255, 255, 255, 0.62);
            margin: 0;
            max-width: 320px;
        }

        .sd-footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin: 0 0 14px;
        }

        .sd-footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .sd-footer-col ul li {
            margin-bottom: 8px;
        }

        .sd-footer-col ul li a {
            color: rgba(255, 255, 255, 0.62);
            font-size: 14px;
            text-decoration: none;
            transition: color 0.2s ease;
        }

        .sd-footer-col ul li a:hover {
            color: var(--sd-neon);
        }

        .sd-footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            padding-top: 22px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.48);
        }

        .sd-footer-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .sd-footer-links a {
            color: rgba(255, 255, 255, 0.62);
            font-size: 13px;
            text-decoration: none;
            transition: color 0.2s ease;
        }

        .sd-footer-links a:hover {
            color: var(--sd-neon);
        }

        .sd-footer-sep {
            color: rgba(255, 255, 255, 0.3);
        }

        /* Responsive */
        @media (max-width: 992px) {
            .sd-section {
                padding: 64px 0;
            }
            .sd-equipment-grid {
                grid-template-columns: 1fr;
            }
            .sd-data-row {
                grid-template-columns: 1fr 1fr;
            }
            .sd-related-links {
                grid-template-columns: 1fr;
            }
            .sd-info-grid {
                grid-template-columns: 1fr 1fr;
            }
            .sd-feature-banner-image {
                flex: 0 0 100%;
                max-width: 100%;
            }
            .sd-footer-top {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }

        @media (max-width: 768px) {
            .sd-container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .sd-section {
                padding: 48px 0;
            }
            .sd-section-title {
                font-size: 23px;
            }
            .sd-page-header {
                padding: 40px 0 36px;
                min-height: 260px;
            }
            .sd-page-header h1 {
                font-size: 26px;
            }
            .sd-nav-toggle {
                display: block;
            }
            .sd-header-collapse {
                display: none;
                width: 100%;
            }
            .sd-header-collapse.show {
                display: block;
            }
            .sd-header-inner {
                align-items: flex-start;
            }
            .sd-header-cta {
                margin-top: 8px;
            }
            .sd-header-nav {
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
                margin-top: 8px;
            }
            .sd-header-nav .sd-chip {
                justify-content: center;
                padding: 10px 16px;
            }
            .sd-equipment-grid {
                gap: 16px;
            }
            .sd-data-row {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .sd-info-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .sd-feature-banner {
                padding: 28px 22px;
            }
            .sd-subscribe-box {
                padding: 32px 22px;
            }
            .sd-footer-top {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .sd-footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .sd-btn {
                padding: 12px 20px;
                font-size: 14px;
                min-height: 44px;
            }
            .sd-filter-bar {
                gap: 6px;
                padding: 12px 0;
                margin-bottom: 20px;
            }
            .sd-chip {
                padding: 6px 12px;
                font-size: 12px;
            }
        }

        @media (max-width: 520px) {
            .sd-page-header h1 {
                font-size: 22px;
            }
            .sd-page-header .sd-lead {
                font-size: 14px;
            }
            .sd-section-title {
                font-size: 20px;
            }
            .sd-feature-banner-image {
                flex: 0 0 100%;
            }
            .sd-feature-banner-image img {
                height: 160px;
            }
            .sd-data-number {
                font-size: 28px;
            }
            .sd-subscribe-form {
                flex-direction: column;
            }
            .sd-subscribe-input {
                min-width: 100%;
            }
            .sd-breadcrumb {
                font-size: 12px;
            }
        }

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}