/* roulang page: index */
:root {
            --color-primary: #1a3c5e;
            --color-primary-dark: #0f2840;
            --color-primary-light: #2a5a8a;
            --color-accent: #e87722;
            --color-accent-hover: #c96218;
            --color-accent-light: #fff5ee;
            --color-bg: #f7f8fa;
            --color-bg-alt: #eef1f5;
            --color-white: #ffffff;
            --color-text: #1e293b;
            --color-text-secondary: #475569;
            --color-text-light: #64748b;
            --color-border: #e2e8f0;
            --color-border-light: #f1f5f9;
            --color-success: #16a34a;
            --color-success-bg: #f0fdf4;
            --radius-xs: 4px;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-xs: 0 1px 2px rgba(0,0,0,0.04);
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.08), 0 2px 4px rgba(0,0,0,0.04);
            --shadow-lg: 0 8px 32px rgba(0,0,0,0.12), 0 4px 8px rgba(0,0,0,0.06);
            --shadow-xl: 0 16px 48px rgba(0,0,0,0.14), 0 6px 12px rgba(0,0,0,0.06);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            --transition-fast: 0.15s ease;
            --transition-base: 0.25s ease;
            --transition-slow: 0.35s ease;
            --max-width: 1260px;
            --header-height: 68px;
            --topbar-height: 36px;
        }

        *, *::before, *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            color: var(--color-text);
            background-color: var(--color-bg);
            line-height: 1.65;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

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

        button, input {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: none;
        }

        button {
            cursor: pointer;
        }

        ul, ol {
            list-style: none;
        }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ========== TOP BAR ========== */
        .topbar {
            background-color: var(--color-primary-dark);
            color: rgba(255,255,255,0.85);
            font-size: 0.8rem;
            height: var(--topbar-height);
            line-height: var(--topbar-height);
            position: relative;
            z-index: 1001;
        }
        .topbar .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 100%;
        }
        .topbar__left {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .topbar__left span {
            opacity: 0.85;
            letter-spacing: 0.01em;
        }
        .topbar__right {
            display: flex;
            align-items: center;
            gap: 14px;
        }
        .topbar__right a {
            color: rgba(255,255,255,0.9);
            font-weight: 500;
            transition: color var(--transition-fast);
        }
        .topbar__right a:hover {
            color: #fff;
        }
        .topbar__hotline {
            background: rgba(255,255,255,0.12);
            padding: 4px 12px;
            border-radius: var(--radius-xs);
            font-weight: 600;
            letter-spacing: 0.02em;
        }
        @media (max-width: 640px) {
            .topbar {
                font-size: 0.72rem;
                height: 30px;
                line-height: 30px;
            }
            .topbar__left span {
                display: none;
            }
            .topbar__left::before {
                content: '易倍EMC官方平台';
            }
        }

        /* ========== HEADER / NAV ========== */
        .header {
            background: var(--color-white);
            border-bottom: 1px solid var(--color-border);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow-xs);
            height: var(--header-height);
        }
        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .header__logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .header__logo-icon {
            width: 36px;
            height: 36px;
            background: var(--color-primary);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 800;
            font-size: 1rem;
            flex-shrink: 0;
        }
        .header__nav {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .header__nav a {
            display: inline-flex;
            align-items: center;
            padding: 10px 18px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--color-text-secondary);
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            position: relative;
        }
        .header__nav a:hover {
            color: var(--color-primary);
            background: var(--color-bg);
        }
        .header__nav a.active {
            color: var(--color-primary);
            font-weight: 600;
            background: rgba(26,60,94,0.06);
        }
        .header__nav a.active::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 18px;
            right: 18px;
            height: 2px;
            background: var(--color-accent);
            border-radius: 1px;
        }
        .header__cta {
            background: var(--color-accent);
            color: #fff !important;
            font-weight: 600 !important;
            padding: 9px 20px !important;
            border-radius: var(--radius-sm) !important;
            margin-left: 8px;
            transition: all var(--transition-fast) !important;
        }
        .header__cta:hover {
            background: var(--color-accent-hover) !important;
            color: #fff !important;
            box-shadow: var(--shadow-md);
            transform: translateY(-1px);
        }
        .header__burger {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            align-items: center;
            justify-content: center;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            background: var(--color-bg);
            border: 1px solid var(--color-border);
            z-index: 1002;
            transition: all var(--transition-fast);
        }
        .header__burger span {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--color-text);
            border-radius: 2px;
            transition: all var(--transition-base);
        }
        .header__burger.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .header__burger.active span:nth-child(2) {
            opacity: 0;
        }
        .header__burger.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        @media (max-width: 860px) {
            .header__nav {
                position: fixed;
                top: 0;
                right: -300px;
                width: 280px;
                height: 100vh;
                background: var(--color-white);
                flex-direction: column;
                padding: 80px 24px 24px;
                gap: 4px;
                box-shadow: var(--shadow-xl);
                transition: right var(--transition-slow);
                z-index: 1001;
                overflow-y: auto;
            }
            .header__nav.open {
                right: 0;
            }
            .header__nav a {
                width: 100%;
                padding: 12px 16px;
                font-size: 1rem;
                border-radius: var(--radius-md);
            }
            .header__nav a.active::after {
                display: none;
            }
            .header__cta {
                margin-left: 0;
                text-align: center;
                justify-content: center;
            }
            .header__burger {
                display: flex;
            }
        }

        /* ========== OVERLAY ========== */
        .nav-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0,0,0,0.45);
            z-index: 1000;
        }
        .nav-overlay.show {
            display: block;
        }

        /* ========== HERO ========== */
        .hero {
            position: relative;
            min-height: 580px;
            display: flex;
            align-items: center;
            background: var(--color-primary-dark) url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            background-blend-mode: overlay;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15,40,64,0.88) 0%, rgba(26,60,94,0.72) 50%, rgba(15,40,64,0.85) 100%);
            z-index: 1;
        }
        .hero__content {
            position: relative;
            z-index: 2;
            color: #fff;
            padding: 48px 0;
            max-width: 720px;
        }
        .hero__badge {
            display: inline-block;
            background: rgba(255,255,255,0.15);
            backdrop-filter: blur(6px);
            border: 1px solid rgba(255,255,255,0.22);
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 0.88rem;
            font-weight: 500;
            margin-bottom: 20px;
            letter-spacing: 0.02em;
        }
        .hero h1 {
            font-size: 2.8rem;
            font-weight: 700;
            line-height: 1.25;
            letter-spacing: 0.01em;
            margin-bottom: 18px;
        }
        .hero h1 span {
            color: #ffb97a;
        }
        .hero__subtitle {
            font-size: 1.15rem;
            line-height: 1.7;
            color: rgba(255,255,255,0.82);
            margin-bottom: 32px;
            max-width: 560px;
        }
        .hero__actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.95rem;
            letter-spacing: 0.01em;
            transition: all var(--transition-fast);
            text-align: center;
        }
        .btn--primary {
            background: var(--color-accent);
            color: #fff;
            box-shadow: 0 2px 8px rgba(232,119,34,0.35);
        }
        .btn--primary:hover {
            background: var(--color-accent-hover);
            box-shadow: 0 4px 16px rgba(232,119,34,0.45);
            transform: translateY(-2px);
        }
        .btn--outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255,255,255,0.55);
        }
        .btn--outline:hover {
            background: rgba(255,255,255,0.1);
            border-color: #fff;
            transform: translateY(-2px);
        }
        .hero__stats {
            display: flex;
            gap: 32px;
            margin-top: 40px;
            flex-wrap: wrap;
        }
        .hero__stat {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }
        .hero__stat-number {
            font-size: 1.8rem;
            font-weight: 700;
            color: #ffb97a;
            letter-spacing: 0.02em;
        }
        .hero__stat-label {
            font-size: 0.82rem;
            color: rgba(255,255,255,0.7);
            letter-spacing: 0.01em;
        }

        @media (max-width: 768px) {
            .hero {
                min-height: 480px;
            }
            .hero h1 {
                font-size: 2rem;
            }
            .hero__subtitle {
                font-size: 1rem;
            }
            .hero__stats {
                gap: 20px;
            }
            .hero__stat-number {
                font-size: 1.4rem;
            }
            .btn {
                padding: 11px 22px;
                font-size: 0.9rem;
            }
        }
        @media (max-width: 480px) {
            .hero {
                min-height: 420px;
            }
            .hero h1 {
                font-size: 1.6rem;
            }
            .hero__actions {
                flex-direction: column;
            }
            .btn {
                width: 100%;
                justify-content: center;
            }
        }

        /* ========== SECTION ========== */
        .section {
            padding: 64px 0;
        }
        .section--alt {
            background: var(--color-white);
        }
        .section--dark {
            background: var(--color-primary-dark);
            color: #fff;
        }
        .section__header {
            text-align: center;
            margin-bottom: 44px;
        }
        .section__tag {
            display: inline-block;
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--color-accent);
            letter-spacing: 0.04em;
            text-transform: uppercase;
            margin-bottom: 8px;
        }
        .section__title {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--color-text);
            letter-spacing: 0.01em;
            margin-bottom: 10px;
        }
        .section--dark .section__title {
            color: #fff;
        }
        .section__desc {
            font-size: 1rem;
            color: var(--color-text-light);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.7;
        }
        .section--dark .section__desc {
            color: rgba(255,255,255,0.7);
        }

        @media (max-width: 768px) {
            .section {
                padding: 40px 0;
            }
            .section__title {
                font-size: 1.45rem;
            }
            .section__header {
                margin-bottom: 30px;
            }
        }

        /* ========== FEATURES GRID ========== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .feature-card {
            background: var(--color-white);
            border-radius: var(--radius-lg);
            padding: 28px 22px;
            border: 1px solid var(--color-border);
            transition: all var(--transition-base);
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--color-accent);
            opacity: 0;
            transition: opacity var(--transition-base);
        }
        .feature-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: transparent;
        }
        .feature-card:hover::before {
            opacity: 1;
        }
        .feature-card__icon {
            width: 54px;
            height: 54px;
            border-radius: var(--radius-md);
            background: var(--color-accent-light);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-size: 1.5rem;
            color: var(--color-accent);
            transition: all var(--transition-base);
        }
        .feature-card:hover .feature-card__icon {
            background: var(--color-accent);
            color: #fff;
            transform: scale(1.08);
        }
        .feature-card h3 {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--color-text);
        }
        .feature-card p {
            font-size: 0.9rem;
            color: var(--color-text-light);
            line-height: 1.6;
        }

        @media (max-width: 1024px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .features-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
        }

        /* ========== CATEGORY CARDS ========== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .category-card {
            background: var(--color-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--color-border);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
        }
        .category-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: transparent;
        }
        .category-card__img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
        }
        .category-card__body {
            padding: 20px 22px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .category-card__tag {
            font-size: 0.78rem;
            font-weight: 600;
            color: var(--color-accent);
            margin-bottom: 6px;
            letter-spacing: 0.03em;
        }
        .category-card h3 {
            font-size: 1.15rem;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--color-text);
        }
        .category-card p {
            font-size: 0.92rem;
            color: var(--color-text-light);
            line-height: 1.6;
            flex: 1;
            margin-bottom: 14px;
        }
        .category-card__link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--color-primary);
            transition: all var(--transition-fast);
        }
        .category-card__link:hover {
            color: var(--color-accent);
            gap: 10px;
        }
        .category-card__link::after {
            content: '→';
            font-size: 1.1rem;
            transition: transform var(--transition-fast);
        }
        .category-card__link:hover::after {
            transform: translateX(3px);
        }

        @media (max-width: 860px) {
            .category-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
        }
        @media (max-width: 560px) {
            .category-grid {
                grid-template-columns: 1fr;
            }
            .category-card__img {
                height: 160px;
            }
        }

        /* ========== CMS LIST ========== */
        .cms-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 18px;
        }
        .cms-item {
            background: var(--color-white);
            border-radius: var(--radius-md);
            padding: 20px 22px;
            border: 1px solid var(--color-border);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .cms-item:hover {
            box-shadow: var(--shadow-md);
            border-color: transparent;
            transform: translateY(-2px);
        }
        .cms-item__meta {
            display: flex;
            gap: 12px;
            font-size: 0.8rem;
            color: var(--color-text-light);
            align-items: center;
        }
        .cms-item__category {
            background: var(--color-accent-light);
            color: var(--color-accent);
            padding: 3px 10px;
            border-radius: var(--radius-xs);
            font-weight: 600;
            font-size: 0.76rem;
        }
        .cms-item h3 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-text);
            line-height: 1.45;
        }
        .cms-item h3 a {
            color: inherit;
            transition: color var(--transition-fast);
        }
        .cms-item h3 a:hover {
            color: var(--color-accent);
        }
        .cms-item p {
            font-size: 0.88rem;
            color: var(--color-text-light);
            line-height: 1.55;
        }
        .cms-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 48px 20px;
            color: var(--color-text-light);
            font-size: 1rem;
            background: var(--color-white);
            border-radius: var(--radius-md);
            border: 1px dashed var(--color-border);
        }

        @media (max-width: 680px) {
            .cms-list {
                grid-template-columns: 1fr;
                gap: 12px;
            }
        }

        /* ========== ABOUT BLOCK ========== */
        .about-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 44px;
            align-items: center;
        }
        .about-block__img {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
        }
        .about-block__img img {
            width: 100%;
            height: auto;
        }
        .about-block__text h2 {
            font-size: 1.6rem;
            font-weight: 700;
            margin-bottom: 14px;
            color: var(--color-text);
        }
        .about-block__text p {
            font-size: 0.98rem;
            color: var(--color-text-light);
            line-height: 1.75;
            margin-bottom: 12px;
        }
        .about-block__highlights {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 18px;
        }
        .about-block__highlight {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--color-text-secondary);
            background: var(--color-bg);
            padding: 8px 14px;
            border-radius: var(--radius-sm);
        }
        .about-block__highlight::before {
            content: '✓';
            color: var(--color-success);
            font-weight: 700;
            font-size: 1rem;
        }

        @media (max-width: 768px) {
            .about-block {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .about-block__img {
                max-height: 280px;
            }
            .about-block__img img {
                height: 100%;
                object-fit: cover;
            }
        }

        /* ========== STATS BAR ========== */
        .stats-bar {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .stat-item {
            text-align: center;
            padding: 20px;
            background: rgba(255,255,255,0.06);
            border-radius: var(--radius-md);
            border: 1px solid rgba(255,255,255,0.1);
        }
        .stat-item__number {
            font-size: 2.2rem;
            font-weight: 700;
            color: #ffb97a;
            letter-spacing: 0.02em;
        }
        .stat-item__label {
            font-size: 0.88rem;
            color: rgba(255,255,255,0.7);
            margin-top: 4px;
        }

        @media (max-width: 768px) {
            .stats-bar {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
            }
            .stat-item__number {
                font-size: 1.6rem;
            }
        }
        @media (max-width: 400px) {
            .stats-bar {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .faq-item {
            background: var(--color-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            overflow: hidden;
            transition: all var(--transition-fast);
        }
        .faq-item[open] {
            border-color: var(--color-primary-light);
            box-shadow: var(--shadow-sm);
        }
        .faq-item summary {
            padding: 18px 22px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--color-text);
            transition: color var(--transition-fast);
            user-select: none;
            list-style: none;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary::after {
            content: '+';
            font-size: 1.3rem;
            font-weight: 400;
            color: var(--color-text-light);
            transition: all var(--transition-base);
            flex-shrink: 0;
            margin-left: 12px;
            width: 24px;
            height: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .faq-item[open] summary::after {
            content: '−';
            color: var(--color-accent);
        }
        .faq-item[open] summary {
            color: var(--color-primary);
        }
        .faq-item .faq-answer {
            padding: 0 22px 18px;
            font-size: 0.92rem;
            color: var(--color-text-light);
            line-height: 1.7;
        }

        /* ========== CTA ========== */
        .cta-section {
            text-align: center;
            padding: 56px 0;
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
            border-radius: var(--radius-xl);
            margin: 0 24px;
            color: #fff;
        }
        .section--cta-wrap {
            padding-left: 0;
            padding-right: 0;
        }
        .section--cta-wrap .container {
            padding: 0 24px;
        }
        .cta-section h2 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .cta-section p {
            font-size: 1.05rem;
            color: rgba(255,255,255,0.8);
            margin-bottom: 28px;
            max-width: 520px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.65;
        }
        .btn--large {
            padding: 15px 36px;
            font-size: 1.05rem;
            border-radius: var(--radius-md);
        }
        .btn--white {
            background: #fff;
            color: var(--color-primary);
            font-weight: 700;
            box-shadow: var(--shadow-md);
        }
        .btn--white:hover {
            background: #f0f4f8;
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }

        @media (max-width: 768px) {
            .cta-section {
                margin: 0 12px;
                padding: 40px 20px;
                border-radius: var(--radius-lg);
            }
            .cta-section h2 {
                font-size: 1.4rem;
            }
            .cta-section p {
                font-size: 0.95rem;
            }
        }

        /* ========== FOOTER ========== */
        .footer {
            background: var(--color-primary-dark);
            color: rgba(255,255,255,0.75);
            padding: 44px 0 28px;
            margin-top: auto;
        }
        .footer__grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 28px;
        }
        .footer__brand {
            font-size: 1.25rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }
        .footer__brand-desc {
            font-size: 0.88rem;
            line-height: 1.65;
            color: rgba(255,255,255,0.6);
        }
        .footer h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 12px;
        }
        .footer ul {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer ul a {
            font-size: 0.88rem;
            color: rgba(255,255,255,0.65);
            transition: color var(--transition-fast);
        }
        .footer ul a:hover {
            color: #fff;
        }
        .footer__bottom {
            border-top: 1px solid rgba(255,255,255,0.12);
            padding-top: 18px;
            font-size: 0.82rem;
            color: rgba(255,255,255,0.5);
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
        }

        @media (max-width: 768px) {
            .footer__grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }
        @media (max-width: 480px) {
            .footer__grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }

        /* ========== SCROLL TO TOP ========== */
        .scroll-top {
            position: fixed;
            bottom: 28px;
            right: 28px;
            width: 44px;
            height: 44px;
            background: var(--color-primary);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            box-shadow: var(--shadow-md);
            z-index: 999;
            opacity: 0;
            pointer-events: none;
            transition: all var(--transition-base);
            cursor: pointer;
        }
        .scroll-top.visible {
            opacity: 1;
            pointer-events: auto;
        }
        .scroll-top:hover {
            background: var(--color-accent);
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
        }

        /* ========== ANIMATION ========== */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(24px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .section {
            animation: fadeInUp 0.6s ease forwards;
        }

/* roulang page: category1 */
:root {
            --color-primary: #1a56db;
            --color-primary-dark: #143fa8;
            --color-primary-light: #e8effc;
            --color-accent: #f59e0b;
            --color-accent-dark: #d97706;
            --color-bg: #f8fafc;
            --color-surface: #ffffff;
            --color-text: #1e293b;
            --color-text-weak: #64748b;
            --color-text-muted: #94a3b8;
            --color-border: #e2e8f0;
            --color-border-light: #f1f5f9;
            --color-success: #10b981;
            --color-danger: #ef4444;
            --color-dark-bg: #0f172a;
            --color-dark-surface: #1e293b;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-full: 9999px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08), 0 2px 4px rgba(0, 0, 0, 0.04);
            --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.10), 0 4px 8px rgba(0, 0, 0, 0.05);
            --shadow-xl: 0 20px 48px rgba(0, 0, 0, 0.12), 0 8px 16px rgba(0, 0, 0, 0.06);
            --transition-fast: 0.15s ease;
            --transition-base: 0.25s ease;
            --transition-slow: 0.4s ease;
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', system-ui, -apple-system, sans-serif;
            --max-width: 1200px;
            --header-height: 72px;
            --topbar-height: 36px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-width: 320px;
            overflow-x: hidden;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

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

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        ul,
        ol {
            list-style: none;
        }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ========== TOP BAR ========== */
        .topbar {
            background: var(--color-dark-bg);
            color: #cbd5e1;
            font-size: 13px;
            height: var(--topbar-height);
            line-height: var(--topbar-height);
            overflow: hidden;
        }
        .topbar .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .topbar__left span {
            margin-right: 18px;
            white-space: nowrap;
        }
        .topbar__left i {
            margin-right: 5px;
            color: var(--color-accent);
            font-size: 12px;
        }
        .topbar__right a {
            color: #cbd5e1;
            margin-left: 16px;
            font-size: 13px;
            transition: color var(--transition-fast);
            white-space: nowrap;
        }
        .topbar__right a:hover {
            color: #ffffff;
        }
        .topbar__right i {
            margin-right: 4px;
            font-size: 11px;
        }
        @media (max-width: 640px) {
            .topbar {
                display: none;
            }
        }

        /* ========== HEADER ========== */
        .header {
            background: var(--color-surface);
            border-bottom: 1px solid var(--color-border);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow-sm);
            height: var(--header-height);
        }
        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .header__logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: var(--color-text);
            letter-spacing: -0.3px;
            flex-shrink: 0;
        }
        .header__logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-md);
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
            color: #fff;
            font-weight: 800;
            font-size: 15px;
            letter-spacing: -0.5px;
            flex-shrink: 0;
        }
        .header__nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .header__nav a {
            display: inline-flex;
            align-items: center;
            padding: 10px 16px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text-weak);
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
        }
        .header__nav a:hover {
            color: var(--color-primary);
            background: var(--color-primary-light);
        }
        .header__nav a.active {
            color: var(--color-primary);
            font-weight: 600;
            background: var(--color-primary-light);
        }
        .header__cta {
            display: inline-flex !important;
            align-items: center;
            gap: 6px;
            padding: 10px 20px !important;
            border-radius: var(--radius-full) !important;
            background: var(--color-primary) !important;
            color: #ffffff !important;
            font-weight: 600 !important;
            font-size: 14px !important;
            transition: all var(--transition-base) !important;
            box-shadow: 0 2px 8px rgba(26, 86, 219, 0.25);
            margin-left: 8px;
        }
        .header__cta:hover {
            background: var(--color-primary-dark) !important;
            color: #ffffff !important;
            box-shadow: 0 4px 16px rgba(26, 86, 219, 0.4);
            transform: translateY(-1px);
        }
        .header__burger {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: background var(--transition-fast);
        }
        .header__burger:hover {
            background: var(--color-primary-light);
        }
        .header__burger span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--color-text);
            border-radius: 4px;
            transition: all var(--transition-base);
            transform-origin: center;
        }
        .header__burger.active span:nth-child(1) {
            transform: translateY(7.5px) rotate(45deg);
        }
        .header__burger.active span:nth-child(2) {
            opacity: 0;
            transform: scaleX(0);
        }
        .header__burger.active span:nth-child(3) {
            transform: translateY(-7.5px) rotate(-45deg);
        }

        @media (max-width: 1024px) {
            .header__nav {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                bottom: 0;
                background: var(--color-surface);
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
                padding: 20px 24px;
                transform: translateX(100%);
                transition: transform var(--transition-slow);
                overflow-y: auto;
                z-index: 999;
                box-shadow: var(--shadow-xl);
            }
            .header__nav.open {
                transform: translateX(0);
            }
            .header__nav a {
                padding: 14px 20px;
                font-size: 16px;
                border-radius: var(--radius-md);
            }
            .header__cta {
                margin-left: 0;
                justify-content: center;
                padding: 14px 20px !important;
                font-size: 16px !important;
                margin-top: 8px;
            }
            .header__burger {
                display: flex;
            }
        }
        @media (max-width: 640px) {
            .header {
                --header-height: 60px;
            }
            .header__logo {
                font-size: 18px;
            }
            .header__logo-icon {
                width: 34px;
                height: 34px;
                font-size: 13px;
            }
        }

        /* ========== HERO ========== */
        .hero {
            position: relative;
            padding: 80px 0 100px;
            background: url('/assets/images/backpic/back-1.webp') center / cover no-repeat;
            color: #ffffff;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.88) 0%, rgba(15, 23, 42, 0.72) 50%, rgba(26, 86, 219, 0.55) 100%);
            z-index: 1;
        }
        .hero .container {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            gap: 48px;
        }
        .hero__content {
            flex: 1;
            max-width: 620px;
        }
        .hero__badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.25);
            padding: 8px 16px;
            border-radius: var(--radius-full);
            font-size: 14px;
            font-weight: 500;
            color: #e8effc;
            margin-bottom: 20px;
        }
        .hero__badge i {
            color: var(--color-accent);
            font-size: 13px;
        }
        .hero__title {
            font-size: 44px;
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -1px;
            margin-bottom: 18px;
            color: #ffffff;
        }
        .hero__title span {
            color: var(--color-accent);
        }
        .hero__desc {
            font-size: 17px;
            line-height: 1.8;
            color: #cbd5e1;
            margin-bottom: 32px;
            max-width: 540px;
        }
        .hero__actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 28px;
            border-radius: var(--radius-full);
            font-weight: 600;
            font-size: 15px;
            cursor: pointer;
            transition: all var(--transition-base);
            border: none;
            white-space: nowrap;
        }
        .btn--primary {
            background: var(--color-accent);
            color: #1e293b;
            box-shadow: 0 4px 16px rgba(245, 158, 11, 0.35);
        }
        .btn--primary:hover {
            background: var(--color-accent-dark);
            box-shadow: 0 6px 24px rgba(245, 158, 11, 0.5);
            transform: translateY(-2px);
            color: #1e293b;
        }
        .btn--outline {
            background: transparent;
            color: #ffffff;
            border: 2px solid rgba(255, 255, 255, 0.5);
        }
        .btn--outline:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #ffffff;
            transform: translateY(-2px);
        }
        .btn--white {
            background: #ffffff;
            color: var(--color-primary);
            box-shadow: var(--shadow-md);
        }
        .btn--white:hover {
            background: #f1f5f9;
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }
        .hero__visual {
            flex: 0 0 420px;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .hero__stat-cards {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
            width: 100%;
        }
        .hero__stat-card {
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(12px);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: var(--radius-lg);
            padding: 24px 20px;
            text-align: center;
            color: #ffffff;
        }
        .hero__stat-card .stat-num {
            font-size: 34px;
            font-weight: 800;
            color: var(--color-accent);
            line-height: 1;
            margin-bottom: 6px;
        }
        .hero__stat-card .stat-label {
            font-size: 13px;
            color: #cbd5e1;
            line-height: 1.4;
        }
        @media (max-width: 1024px) {
            .hero .container {
                flex-direction: column;
                text-align: center;
            }
            .hero__content {
                max-width: 100%;
            }
            .hero__desc {
                max-width: 100%;
            }
            .hero__actions {
                justify-content: center;
            }
            .hero__visual {
                flex: 0 0 auto;
                width: 100%;
                max-width: 440px;
            }
            .hero__title {
                font-size: 34px;
            }
        }
        @media (max-width: 640px) {
            .hero {
                padding: 50px 0 60px;
            }
            .hero__title {
                font-size: 26px;
            }
            .hero__desc {
                font-size: 15px;
            }
            .hero__stat-cards {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .hero__stat-card {
                padding: 16px 12px;
            }
            .hero__stat-card .stat-num {
                font-size: 26px;
            }
            .btn {
                padding: 12px 22px;
                font-size: 14px;
            }
        }

        /* ========== SECTIONS ========== */
        .section {
            padding: 72px 0;
        }
        .section--alt {
            background: var(--color-surface);
        }
        .section--dark {
            background: var(--color-dark-bg);
            color: #e2e8f0;
        }
        .section__header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section__tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-primary);
            background: var(--color-primary-light);
            padding: 6px 14px;
            border-radius: var(--radius-full);
            margin-bottom: 12px;
            letter-spacing: 0.5px;
            text-transform: uppercase;
        }
        .section__title {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--color-text);
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }
        .section--dark .section__title {
            color: #ffffff;
        }
        .section__subtitle {
            font-size: 16px;
            color: var(--color-text-weak);
            max-width: 620px;
            margin: 0 auto;
            line-height: 1.7;
        }
        .section--dark .section__subtitle {
            color: #94a3b8;
        }
        @media (max-width: 640px) {
            .section {
                padding: 48px 0;
            }
            .section__title {
                font-size: 24px;
            }
            .section__header {
                margin-bottom: 32px;
            }
        }

        /* ========== SERVICE CARDS GRID ========== */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .service-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            padding: 28px 22px;
            border: 1px solid var(--color-border);
            transition: all var(--transition-base);
            position: relative;
            overflow: hidden;
            display: flex;
            flex-direction: column;
        }
        .service-card:hover {
            box-shadow: var(--shadow-lg);
            border-color: transparent;
            transform: translateY(-4px);
        }
        .service-card__icon {
            width: 50px;
            height: 50px;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 16px;
            flex-shrink: 0;
        }
        .service-card__icon--blue {
            background: #eff6ff;
            color: #1a56db;
        }
        .service-card__icon--amber {
            background: #fffbeb;
            color: #d97706;
        }
        .service-card__icon--green {
            background: #ecfdf5;
            color: #059669;
        }
        .service-card__icon--purple {
            background: #f5f3ff;
            color: #7c3aed;
        }
        .service-card__title {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--color-text);
            line-height: 1.3;
        }
        .service-card__desc {
            font-size: 14px;
            color: var(--color-text-weak);
            line-height: 1.6;
            flex-grow: 1;
        }
        .service-card__link {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            margin-top: 14px;
            font-size: 14px;
            font-weight: 600;
            color: var(--color-primary);
            transition: gap var(--transition-fast);
        }
        .service-card__link:hover {
            gap: 8px;
            color: var(--color-primary-dark);
        }
        @media (max-width: 1024px) {
            .service-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .service-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
        }

        /* ========== PROCESS STEPS ========== */
        .process-steps {
            display: flex;
            gap: 0;
            position: relative;
            counter-reset: step;
        }
        .process-steps::before {
            content: '';
            position: absolute;
            top: 40px;
            left: 60px;
            right: 60px;
            height: 3px;
            background: var(--color-border);
            z-index: 0;
        }
        .process-step {
            flex: 1;
            text-align: center;
            position: relative;
            z-index: 1;
            counter-increment: step;
        }
        .process-step__circle {
            width: 80px;
            height: 80px;
            border-radius: 50%;
            background: var(--color-surface);
            border: 3px solid var(--color-border);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 28px;
            font-weight: 800;
            color: var(--color-primary);
            margin: 0 auto 16px;
            transition: all var(--transition-base);
            position: relative;
        }
        .process-step:hover .process-step__circle {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 12px rgba(26, 86, 219, 0.08);
            transform: scale(1.05);
        }
        .process-step__title {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--color-text);
        }
        .process-step__desc {
            font-size: 13px;
            color: var(--color-text-weak);
            line-height: 1.5;
            max-width: 180px;
            margin: 0 auto;
        }
        @media (max-width: 768px) {
            .process-steps {
                flex-direction: column;
                gap: 24px;
            }
            .process-steps::before {
                display: none;
            }
            .process-step {
                display: flex;
                align-items: center;
                gap: 16px;
                text-align: left;
            }
            .process-step__circle {
                width: 56px;
                height: 56px;
                font-size: 22px;
                margin: 0;
                flex-shrink: 0;
            }
            .process-step__desc {
                max-width: 100%;
            }
        }

        /* ========== INDUSTRY CARDS ========== */
        .industry-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .industry-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--color-border);
            transition: all var(--transition-base);
        }
        .industry-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: transparent;
        }
        .industry-card__img {
            height: 180px;
            overflow: hidden;
            position: relative;
        }
        .industry-card__img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .industry-card:hover .industry-card__img img {
            transform: scale(1.06);
        }
        .industry-card__body {
            padding: 20px;
        }
        .industry-card__title {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--color-text);
        }
        .industry-card__desc {
            font-size: 14px;
            color: var(--color-text-weak);
            line-height: 1.6;
        }
        @media (max-width: 768px) {
            .industry-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .industry-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ========== FEATURE LIST ========== */
        .feature-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px 40px;
        }
        .feature-item {
            display: flex;
            gap: 16px;
            align-items: flex-start;
        }
        .feature-item__icon {
            width: 44px;
            height: 44px;
            border-radius: var(--radius-md);
            background: var(--color-primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--color-primary);
            flex-shrink: 0;
        }
        .feature-item__info h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 4px;
            color: var(--color-text);
        }
        .feature-item__info p {
            font-size: 14px;
            color: var(--color-text-weak);
            line-height: 1.6;
        }
        @media (max-width: 640px) {
            .feature-list {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--transition-base);
        }
        .faq-item:hover {
            border-color: var(--color-primary);
            box-shadow: var(--shadow-sm);
        }
        .faq-item__q {
            padding: 18px 20px;
            font-weight: 700;
            font-size: 16px;
            color: var(--color-text);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            user-select: none;
            transition: color var(--transition-fast);
        }
        .faq-item__q:hover {
            color: var(--color-primary);
        }
        .faq-item__q i {
            font-size: 14px;
            color: var(--color-text-muted);
            transition: transform var(--transition-base);
        }
        .faq-item.open .faq-item__q i {
            transform: rotate(180deg);
            color: var(--color-primary);
        }
        .faq-item__a {
            padding: 0 20px;
            max-height: 0;
            overflow: hidden;
            transition: all var(--transition-base);
        }
        .faq-item.open .faq-item__a {
            padding: 0 20px 18px;
            max-height: 500px;
        }
        .faq-item__a p {
            font-size: 15px;
            color: var(--color-text-weak);
            line-height: 1.7;
        }
        @media (max-width: 640px) {
            .faq-item__q {
                font-size: 15px;
                padding: 15px 16px;
            }
            .faq-item__a p {
                font-size: 14px;
            }
        }

        /* ========== CTA ========== */
        .cta-section {
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
            color: #ffffff;
            text-align: center;
            padding: 64px 0;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.05);
            top: -80px;
            right: -60px;
            pointer-events: none;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
            bottom: -40px;
            left: -40px;
            pointer-events: none;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-section__title {
            font-size: 30px;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .cta-section__desc {
            font-size: 16px;
            color: #cbd5e1;
            margin-bottom: 28px;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.7;
        }
        @media (max-width: 640px) {
            .cta-section {
                padding: 44px 0;
            }
            .cta-section__title {
                font-size: 23px;
            }
        }

        /* ========== FOOTER ========== */
        .footer {
            background: var(--color-dark-bg);
            color: #cbd5e1;
            padding: 52px 0 28px;
            font-size: 14px;
        }
        .footer__grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 36px;
        }
        .footer__brand {
            font-size: 20px;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 8px;
        }
        .footer__brand-desc {
            font-size: 13px;
            line-height: 1.7;
            color: #94a3b8;
        }
        .footer h4 {
            font-size: 15px;
            font-weight: 600;
            color: #ffffff;
            margin-bottom: 12px;
        }
        .footer ul li {
            margin-bottom: 8px;
        }
        .footer ul li a {
            color: #94a3b8;
            font-size: 13px;
            transition: color var(--transition-fast);
        }
        .footer ul li a:hover {
            color: #ffffff;
        }
        .footer__bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 12px;
            color: #64748b;
        }
        @media (max-width: 768px) {
            .footer__grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }
        @media (max-width: 480px) {
            .footer__grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer__bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ========== UTILITY ========== */
        .text-center {
            text-align: center;
        }
        .mt-sm {
            margin-top: 12px;
        }
        .mt-md {
            margin-top: 24px;
        }
        .mt-lg {
            margin-top: 40px;
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }

        /* ========== ANIMATIONS ========== */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(24px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .animate-on-scroll {
            animation: fadeInUp 0.6s ease both;
        }

/* roulang page: article */
:root {
            --color-primary: #1a365d;
            --color-primary-light: #2c5282;
            --color-primary-lighter: #3b6da8;
            --color-accent: #b8861e;
            --color-accent-light: #c8943e;
            --color-accent-lighter: #d4a853;
            --color-accent-pale: #faf3e6;
            --color-bg: #fafaf8;
            --color-bg-warm: #f5f2ed;
            --color-white: #ffffff;
            --color-text: #2d2d2d;
            --color-text-rich: #1a1a1a;
            --color-text-light: #5a5a5a;
            --color-text-muted: #888888;
            --color-border: #e5e0d8;
            --color-border-light: #f0ede7;
            --color-success: #3a7d5f;
            --radius-xs: 4px;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-xs: 0 1px 2px rgba(0,0,0,0.04);
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.07);
            --shadow-lg: 0 8px 32px rgba(0,0,0,0.09);
            --shadow-xl: 0 16px 48px rgba(0,0,0,0.11);
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', system-ui, -apple-system, sans-serif;
            --font-serif: 'Noto Serif SC', 'Source Han Serif SC', 'STSong', 'Songti SC', Georgia, 'Times New Roman', serif;
            --transition-fast: 0.18s ease;
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-bounce: 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
        }

        *, *::before, *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            font-size: 16px;
        }

        body {
            font-family: var(--font-sans);
            color: var(--color-text);
            background-color: var(--color-bg);
            line-height: 1.7;
            overflow-x: hidden;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        body.body--article {
            background-color: var(--color-white);
        }

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

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
        }

        input, textarea {
            font-family: inherit;
        }

        ul, ol {
            list-style: none;
        }

        h1, h2, h3, h4, h5, h6 {
            font-weight: 700;
            line-height: 1.35;
            color: var(--color-text-rich);
        }

        .container {
            width: 100%;
            max-width: 1260px;
            margin: 0 auto;
            padding: 0 28px;
        }

        .container--narrow {
            max-width: 820px;
        }

        .container--article {
            max-width: 790px;
        }

        /* ========== HEADER ========== */
        .header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255,255,255,0.97);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-xs);
            transition: box-shadow var(--transition-smooth);
        }

        .header.scrolled {
            box-shadow: var(--shadow-md);
        }

        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 66px;
        }

        .header__logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: -0.02em;
            transition: opacity var(--transition-fast);
            white-space: nowrap;
            flex-shrink: 0;
        }

        .header__logo:hover {
            opacity: 0.82;
        }

        .header__logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
            color: #fff;
            border-radius: var(--radius-sm);
            font-size: 0.85rem;
            font-weight: 800;
            letter-spacing: 0.03em;
            flex-shrink: 0;
        }

        .header__nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .header__nav a {
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--color-text-light);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .header__nav a:hover {
            color: var(--color-primary);
            background: rgba(26,54,93,0.04);
        }

        .header__nav a.active {
            color: var(--color-primary);
            font-weight: 600;
            background: rgba(26,54,93,0.06);
        }

        .header__cta {
            background: var(--color-accent) !important;
            color: #fff !important;
            padding: 9px 20px !important;
            border-radius: 50px !important;
            font-weight: 600 !important;
            letter-spacing: 0.01em;
            transition: all var(--transition-bounce) !important;
            box-shadow: 0 2px 8px rgba(184,134,30,0.25);
            margin-left: 6px;
        }

        .header__cta:hover {
            background: var(--color-accent-light) !important;
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(184,134,30,0.35);
            color: #fff !important;
        }

        .header__burger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: background var(--transition-fast);
        }

        .header__burger:hover {
            background: rgba(0,0,0,0.04);
        }

        .header__burger span {
            display: block;
            width: 24px;
            height: 2.5px;
            background: var(--color-text);
            border-radius: 2px;
            transition: all var(--transition-smooth);
        }

        .header__burger.active span:nth-child(1) {
            transform: translateY(7.5px) rotate(45deg);
        }

        .header__burger.active span:nth-child(2) {
            opacity: 0;
        }

        .header__burger.active span:nth-child(3) {
            transform: translateY(-7.5px) rotate(-45deg);
        }

        /* ========== ARTICLE HERO BANNER ========== */
        .article-hero {
            position: relative;
            min-height: 380px;
            display: flex;
            align-items: flex-end;
            background: var(--color-primary) url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            padding: 60px 0 40px;
            overflow: hidden;
        }

        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(
                180deg,
                rgba(26,54,93,0.55) 0%,
                rgba(26,54,93,0.72) 40%,
                rgba(15,30,50,0.88) 100%
            );
            z-index: 1;
        }

        .article-hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 80px;
            background: linear-gradient(to top, var(--color-white) 0%, transparent 100%);
            z-index: 2;
        }

        .article-hero__content {
            position: relative;
            z-index: 3;
            width: 100%;
        }

        .article-hero__meta-row {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 14px;
            margin-bottom: 16px;
        }

        .article-hero__category-tag {
            display: inline-block;
            padding: 6px 14px;
            background: var(--color-accent);
            color: #fff;
            font-size: 0.8rem;
            font-weight: 600;
            border-radius: 50px;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .article-hero__date {
            color: rgba(255,255,255,0.85);
            font-size: 0.9rem;
            font-weight: 400;
        }

        .article-hero__title {
            color: #fff;
            font-size: 2.2rem;
            font-weight: 700;
            line-height: 1.3;
            max-width: 750px;
            text-shadow: 0 2px 12px rgba(0,0,0,0.35);
            letter-spacing: -0.01em;
        }

        .article-hero--not-found {
            min-height: 260px;
            align-items: center;
            text-align: center;
        }

        .article-hero--not-found .article-hero__title {
            font-size: 1.8rem;
            max-width: 100%;
        }

        /* ========== BREADCRUMB ========== */
        .breadcrumb-wrap {
            background: var(--color-white);
            border-bottom: 1px solid var(--color-border-light);
            padding: 14px 0;
        }

        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 6px;
            font-size: 0.88rem;
            color: var(--color-text-muted);
        }

        .breadcrumb a {
            color: var(--color-text-light);
            transition: color var(--transition-fast);
        }

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

        .breadcrumb__sep {
            color: var(--color-border);
            user-select: none;
            font-size: 0.75rem;
        }

        .breadcrumb__current {
            color: var(--color-text);
            font-weight: 500;
            pointer-events: none;
        }

        /* ========== ARTICLE MAIN ========== */
        .article-main {
            flex: 1;
            padding: 40px 0 60px;
            background: var(--color-white);
        }

        .article-body {
            padding: 0 0 40px;
        }

        /* Article content typography */
        .article-content {
            font-family: var(--font-serif);
            font-size: 1.12rem;
            line-height: 1.9;
            color: var(--color-text-rich);
            letter-spacing: 0.005em;
        }

        .article-content p {
            margin-bottom: 1.4em;
        }

        .article-content h2 {
            font-family: var(--font-sans);
            font-size: 1.55rem;
            font-weight: 700;
            color: var(--color-primary);
            margin: 2em 0 0.7em;
            padding-bottom: 0.5em;
            border-bottom: 2px solid var(--color-accent-pale);
            letter-spacing: -0.01em;
        }

        .article-content h3 {
            font-family: var(--font-sans);
            font-size: 1.28rem;
            font-weight: 600;
            color: var(--color-text-rich);
            margin: 1.6em 0 0.6em;
        }

        .article-content h4 {
            font-family: var(--font-sans);
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--color-text);
            margin: 1.3em 0 0.5em;
        }

        .article-content ul,
        .article-content ol {
            margin: 0.8em 0 1.4em;
            padding-left: 1.5em;
        }

        .article-content ul {
            list-style: disc;
        }

        .article-content ol {
            list-style: decimal;
        }

        .article-content li {
            margin-bottom: 0.45em;
            line-height: 1.8;
        }

        .article-content blockquote {
            margin: 2em 0;
            padding: 20px 24px;
            background: var(--color-bg-warm);
            border-left: 4px solid var(--color-accent);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            font-style: italic;
            color: var(--color-text-light);
            font-size: 1.05rem;
        }

        .article-content blockquote p {
            margin-bottom: 0.5em;
        }

        .article-content blockquote p:last-child {
            margin-bottom: 0;
        }

        .article-content img {
            border-radius: var(--radius-md);
            margin: 1.8em auto;
            box-shadow: var(--shadow-md);
            max-width: 100%;
            height: auto;
        }

        .article-content figure {
            margin: 1.8em 0;
        }

        .article-content figcaption {
            text-align: center;
            font-size: 0.88rem;
            color: var(--color-text-muted);
            margin-top: 0.6em;
            font-family: var(--font-sans);
        }

        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.8em 0;
            font-size: 0.95rem;
            font-family: var(--font-sans);
            border-radius: var(--radius-sm);
            overflow: hidden;
            box-shadow: var(--shadow-xs);
        }

        .article-content table th,
        .article-content table td {
            padding: 12px 16px;
            border: 1px solid var(--color-border-light);
            text-align: left;
        }

        .article-content table th {
            background: var(--color-primary);
            color: #fff;
            font-weight: 600;
            font-size: 0.9rem;
        }

        .article-content table tr:nth-child(even) td {
            background: var(--color-bg);
        }

        .article-content code {
            background: var(--color-bg-warm);
            padding: 2px 8px;
            border-radius: var(--radius-xs);
            font-size: 0.9em;
            font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
        }

        .article-content pre {
            background: #1e293b;
            color: #e2e8f0;
            padding: 20px 24px;
            border-radius: var(--radius-md);
            overflow-x: auto;
            margin: 1.8em 0;
            font-size: 0.9rem;
            line-height: 1.7;
        }

        .article-content pre code {
            background: none;
            padding: 0;
            color: inherit;
        }

        .article-content strong {
            font-weight: 700;
            color: var(--color-text-rich);
        }

        .article-content a {
            color: var(--color-primary-light);
            text-decoration: underline;
            text-underline-offset: 3px;
            transition: color var(--transition-fast);
        }

        .article-content a:hover {
            color: var(--color-accent);
        }

        .article-content hr {
            border: none;
            height: 1px;
            background: var(--color-border);
            margin: 2.5em 0;
        }

        /* ========== ARTICLE FOOTER META ========== */
        .article-footer-meta {
            border-top: 1px solid var(--color-border-light);
            padding-top: 28px;
            margin-top: 20px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }

        .article-footer-meta__tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .article-footer-meta__tag {
            display: inline-block;
            padding: 5px 12px;
            background: var(--color-bg-warm);
            color: var(--color-text-light);
            border-radius: 50px;
            font-size: 0.82rem;
            font-weight: 500;
            transition: all var(--transition-fast);
            border: 1px solid transparent;
        }

        .article-footer-meta__tag:hover {
            border-color: var(--color-accent-light);
            color: var(--color-accent);
            background: var(--color-accent-pale);
        }

        .article-footer-meta__share {
            display: flex;
            align-items: center;
            gap: 6px;
            color: var(--color-text-muted);
            font-size: 0.88rem;
        }

        .article-footer-meta__share-btn {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--color-bg-warm);
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all var(--transition-fast);
            color: var(--color-text-light);
            font-size: 0.85rem;
        }

        .article-footer-meta__share-btn:hover {
            background: var(--color-primary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-sm);
        }

        /* ========== RELATED ARTICLES ========== */
        .related-section {
            padding: 50px 0 60px;
            background: var(--color-bg);
        }

        .related-section__title {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 32px;
            text-align: center;
            letter-spacing: -0.01em;
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .related-card {
            background: var(--color-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-smooth);
            border: 1px solid var(--color-border-light);
            display: flex;
            flex-direction: column;
        }

        .related-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
            border-color: var(--color-border);
        }

        .related-card__image {
            width: 100%;
            height: 190px;
            object-fit: cover;
            display: block;
        }

        .related-card__body {
            padding: 20px 18px 18px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .related-card__tag {
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--color-accent);
            text-transform: uppercase;
            letter-spacing: 0.04em;
            margin-bottom: 8px;
        }

        .related-card__title {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--color-text-rich);
            line-height: 1.45;
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color var(--transition-fast);
        }

        .related-card:hover .related-card__title {
            color: var(--color-primary);
        }

        .related-card__excerpt {
            font-size: 0.88rem;
            color: var(--color-text-muted);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }

        /* ========== NOT FOUND STATE ========== */
        .not-found-area {
            text-align: center;
            padding: 60px 20px;
        }

        .not-found-area__icon {
            font-size: 4rem;
            margin-bottom: 16px;
            color: var(--color-text-muted);
            opacity: 0.5;
        }

        .not-found-area__heading {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--color-text-rich);
            margin-bottom: 10px;
        }

        .not-found-area__text {
            color: var(--color-text-light);
            max-width: 420px;
            margin: 0 auto 24px;
            line-height: 1.7;
        }

        .not-found-area .btn {
            display: inline-block;
        }

        /* ========== BUTTONS ========== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.95rem;
            letter-spacing: 0.01em;
            transition: all var(--transition-bounce);
            cursor: pointer;
            gap: 8px;
            border: 2px solid transparent;
            white-space: nowrap;
        }

        .btn--primary {
            background: var(--color-primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(26,54,93,0.3);
        }

        .btn--primary:hover {
            background: var(--color-primary-light);
            box-shadow: 0 6px 22px rgba(26,54,93,0.4);
            transform: translateY(-2px);
        }

        .btn--accent {
            background: var(--color-accent);
            color: #fff;
            box-shadow: 0 4px 14px rgba(184,134,30,0.28);
        }

        .btn--accent:hover {
            background: var(--color-accent-light);
            box-shadow: 0 6px 22px rgba(184,134,30,0.38);
            transform: translateY(-2px);
        }

        .btn--outline {
            background: transparent;
            border-color: var(--color-primary);
            color: var(--color-primary);
        }

        .btn--outline:hover {
            background: var(--color-primary);
            color: #fff;
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }

        .btn--lg {
            padding: 15px 36px;
            font-size: 1.05rem;
        }

        .btn--sm {
            padding: 8px 18px;
            font-size: 0.85rem;
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            padding: 60px 0;
            background: linear-gradient(160deg, var(--color-primary) 0%, #152d4f 100%);
            color: #fff;
            text-align: center;
        }

        .cta-section__title {
            font-size: 1.7rem;
            font-weight: 700;
            margin-bottom: 12px;
            letter-spacing: -0.01em;
            color: #fff;
        }

        .cta-section__subtitle {
            color: rgba(255,255,255,0.8);
            max-width: 500px;
            margin: 0 auto 28px;
            font-size: 1rem;
            line-height: 1.7;
        }

        .cta-section .btn--accent {
            font-size: 1rem;
            padding: 14px 34px;
        }

        /* ========== FOOTER ========== */
        .footer {
            background: #1a1f2b;
            color: rgba(255,255,255,0.75);
            padding: 50px 0 0;
            font-size: 0.9rem;
        }

        .footer__grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 36px;
            padding-bottom: 36px;
        }

        .footer__brand {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
            letter-spacing: -0.01em;
        }

        .footer__brand-desc {
            line-height: 1.7;
            font-size: 0.88rem;
            color: rgba(255,255,255,0.6);
            max-width: 300px;
        }

        .footer h4 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 14px;
            letter-spacing: 0.01em;
        }

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

        .footer ul li a {
            color: rgba(255,255,255,0.6);
            transition: color var(--transition-fast);
            font-size: 0.88rem;
        }

        .footer ul li a:hover {
            color: var(--color-accent-lighter);
        }

        .footer__bottom {
            border-top: 1px solid rgba(255,255,255,0.12);
            padding: 20px 0;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 12px;
            font-size: 0.82rem;
            color: rgba(255,255,255,0.45);
        }

        /* ========== MOBILE NAV OVERLAY ========== */
        .mobile-nav-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0,0,0,0.55);
            z-index: 999;
            opacity: 0;
            transition: opacity var(--transition-smooth);
        }

        .mobile-nav-overlay.active {
            opacity: 1;
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .container {
                padding: 0 20px;
            }

            .article-hero {
                min-height: 300px;
                padding: 40px 0 28px;
            }

            .article-hero__title {
                font-size: 1.7rem;
            }

            .article-content {
                font-size: 1.05rem;
            }

            .related-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 18px;
            }

            .footer__grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }

        @media (max-width: 768px) {
            .header .container {
                height: 58px;
            }

            .header__nav {
                position: fixed;
                top: 0;
                right: -300px;
                width: 280px;
                height: 100vh;
                background: var(--color-white);
                flex-direction: column;
                padding: 80px 24px 30px;
                gap: 6px;
                box-shadow: var(--shadow-xl);
                transition: right var(--transition-smooth);
                z-index: 1001;
                align-items: stretch;
            }

            .header__nav.active {
                right: 0;
            }

            .header__nav a {
                padding: 12px 16px;
                border-radius: var(--radius-sm);
                font-size: 1rem;
                width: 100%;
            }

            .header__cta {
                text-align: center;
                justify-content: center;
                margin-left: 0;
                margin-top: 8px;
            }

            .header__burger {
                display: flex;
            }

            .mobile-nav-overlay {
                display: block;
                pointer-events: none;
            }

            .mobile-nav-overlay.active {
                pointer-events: auto;
            }

            .article-hero {
                min-height: 240px;
                padding: 30px 0 24px;
            }

            .article-hero__title {
                font-size: 1.4rem;
            }

            .article-hero__meta-row {
                gap: 8px;
            }

            .article-hero__category-tag {
                font-size: 0.72rem;
                padding: 5px 10px;
            }

            .article-hero__date {
                font-size: 0.78rem;
            }

            .article-main {
                padding: 24px 0 40px;
            }

            .article-content {
                font-size: 1rem;
                line-height: 1.8;
            }

            .article-content h2 {
                font-size: 1.3rem;
            }

            .article-content h3 {
                font-size: 1.12rem;
            }

            .article-footer-meta {
                flex-direction: column;
                align-items: flex-start;
            }

            .related-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .related-card__image {
                height: 170px;
            }

            .related-section__title {
                font-size: 1.25rem;
                margin-bottom: 22px;
            }

            .cta-section__title {
                font-size: 1.35rem;
            }

            .footer__grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .footer__brand-desc {
                max-width: 100%;
            }

            .not-found-area {
                padding: 40px 16px;
            }

            .not-found-area__heading {
                font-size: 1.3rem;
            }

            .article-hero--not-found {
                min-height: 200px;
            }

            .article-hero--not-found .article-hero__title {
                font-size: 1.3rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 14px;
            }

            .header .container {
                height: 54px;
            }

            .header__logo {
                font-size: 1.05rem;
                gap: 7px;
            }

            .header__logo-icon {
                width: 34px;
                height: 34px;
                font-size: 0.72rem;
            }

            .article-hero {
                min-height: 200px;
                padding: 22px 0 20px;
            }

            .article-hero__title {
                font-size: 1.2rem;
            }

            .article-content {
                font-size: 0.95rem;
                line-height: 1.75;
            }

            .article-content h2 {
                font-size: 1.15rem;
            }

            .article-content blockquote {
                padding: 14px 16px;
                font-size: 0.92rem;
            }

            .breadcrumb {
                font-size: 0.78rem;
            }

            .btn {
                padding: 10px 22px;
                font-size: 0.88rem;
            }

            .btn--lg {
                padding: 12px 26px;
                font-size: 0.95rem;
            }

            .footer {
                padding: 36px 0 0;
            }

            .footer__bottom {
                flex-direction: column;
                text-align: center;
                gap: 6px;
            }
        }

/* roulang page: category2 */
/* ============ 设计变量 ============ */
        :root {
            --color-primary: #0d2b45;
            --color-primary-light: #153e5e;
            --color-primary-dark: #091e33;
            --color-accent: #e8943a;
            --color-accent-hover: #c97a2c;
            --color-accent-light: #fdf0e2;
            --color-white: #ffffff;
            --color-off-white: #f8f9fa;
            --color-light-gray: #eef1f5;
            --color-mid-gray: #c5cdd6;
            --color-text: #1a1d22;
            --color-text-secondary: #5a5f66;
            --color-text-muted: #8b9098;
            --color-border: #dde2e8;
            --color-success: #2d8a56;
            --color-success-light: #eaf7f0;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08), 0 2px 6px rgba(0, 0, 0, 0.04);
            --shadow-lg: 0 12px 36px rgba(0, 0, 0, 0.10), 0 4px 12px rgba(0, 0, 0, 0.05);
            --shadow-xl: 0 20px 50px rgba(0, 0, 0, 0.14), 0 8px 20px rgba(0, 0, 0, 0.06);
            --transition-fast: 0.18s ease;
            --transition-normal: 0.28s ease;
            --transition-slow: 0.4s ease;
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --max-width: 1240px;
            --header-height: 72px;
            --topbar-height: 34px;
        }

        /* ============ 基础 Reset ============ */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
            font-size: 16px;
        }

        body {
            font-family: var(--font-sans);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-white);
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
            font-size: inherit;
        }

        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--color-primary);
        }

        /* ============ 容器 ============ */
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .container--narrow {
            max-width: 860px;
        }

        /* ============ 顶部信息条 ============ */
        .topbar {
            background: var(--color-primary-dark);
            color: rgba(255, 255, 255, 0.85);
            font-size: 0.8rem;
            height: var(--topbar-height);
            line-height: var(--topbar-height);
            overflow: hidden;
        }
        .topbar__inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 100%;
            gap: 16px;
        }
        .topbar__left {
            display: flex;
            align-items: center;
            gap: 18px;
            white-space: nowrap;
        }
        .topbar__left span {
            display: flex;
            align-items: center;
            gap: 5px;
        }
        .topbar__left i {
            font-size: 0.7rem;
            color: var(--color-accent);
        }
        .topbar__right a {
            color: rgba(255, 255, 255, 0.9);
            font-weight: 500;
            transition: color var(--transition-fast);
            white-space: nowrap;
        }
        .topbar__right a:hover {
            color: var(--color-accent);
        }
        .topbar__right i {
            margin-right: 4px;
            font-size: 0.7rem;
        }

        /* ============ Header / 导航 ============ */
        .header {
            background: var(--color-white);
            height: var(--header-height);
            display: flex;
            align-items: center;
            position: sticky;
            top: 0;
            z-index: 1000;
            border-bottom: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
        }
        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .header__logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.35rem;
            color: var(--color-primary);
            white-space: nowrap;
            letter-spacing: -0.3px;
            transition: opacity var(--transition-fast);
        }
        .header__logo:hover {
            opacity: 0.82;
        }
        .header__logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            background: var(--color-primary);
            color: var(--color-white);
            font-weight: 800;
            font-size: 0.9rem;
            letter-spacing: 1px;
            flex-shrink: 0;
        }
        .header__nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .header__nav a {
            display: inline-flex;
            align-items: center;
            padding: 10px 16px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--color-text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
        }
        .header__nav a:hover {
            color: var(--color-primary);
            background: var(--color-light-gray);
        }
        .header__nav a.active {
            color: var(--color-accent);
            background: var(--color-accent-light);
        }
        .header__nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 16px;
            right: 16px;
            height: 3px;
            background: var(--color-accent);
            border-radius: 3px 3px 0 0;
        }
        .header__cta {
            display: inline-flex !important;
            align-items: center;
            gap: 6px;
            padding: 10px 20px !important;
            border-radius: 50px !important;
            background: var(--color-accent) !important;
            color: #fff !important;
            font-weight: 700 !important;
            font-size: 0.9rem !important;
            transition: all var(--transition-normal) !important;
            box-shadow: 0 2px 8px rgba(232, 148, 58, 0.3);
            margin-left: 8px;
        }
        .header__cta:hover {
            background: var(--color-accent-hover) !important;
            box-shadow: 0 4px 16px rgba(232, 148, 58, 0.4);
            transform: translateY(-1px);
            color: #fff !important;
        }
        .header__cta::after {
            display: none !important;
        }
        .header__burger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            cursor: pointer;
            z-index: 1001;
        }
        .header__burger span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--color-primary);
            border-radius: 2px;
            transition: all var(--transition-normal);
        }
        .header__burger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .header__burger.active span:nth-child(2) {
            opacity: 0;
        }
        .header__burger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* ============ Hero 板块 ============ */
        .hero {
            position: relative;
            min-height: 520px;
            display: flex;
            align-items: center;
            overflow: hidden;
            background: var(--color-primary);
            color: #fff;
        }
        .hero__bg {
            position: absolute;
            inset: 0;
            z-index: 0;
        }
        .hero__bg img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            filter: brightness(0.35);
        }
        .hero__overlay {
            position: absolute;
            inset: 0;
            z-index: 1;
            background: linear-gradient(135deg, rgba(13, 43, 69, 0.88) 0%, rgba(9, 30, 51, 0.72) 60%, rgba(13, 43, 69, 0.55) 100%);
        }
        .hero__content {
            position: relative;
            z-index: 2;
            padding: 70px 0;
            max-width: 700px;
        }
        .hero__badge {
            display: inline-block;
            background: rgba(232, 148, 58, 0.2);
            border: 1px solid rgba(232, 148, 58, 0.45);
            color: var(--color-accent);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 20px;
        }
        .hero__title {
            font-size: 2.8rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 18px;
            letter-spacing: -0.5px;
            line-height: 1.2;
        }
        .hero__title span {
            color: var(--color-accent);
        }
        .hero__subtitle {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 32px;
            line-height: 1.7;
            max-width: 560px;
        }
        .hero__actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 0.95rem;
            transition: all var(--transition-normal);
            white-space: nowrap;
            letter-spacing: 0.2px;
            border: 2px solid transparent;
        }
        .btn--primary {
            background: var(--color-accent);
            color: #fff;
            box-shadow: 0 4px 16px rgba(232, 148, 58, 0.35);
        }
        .btn--primary:hover {
            background: var(--color-accent-hover);
            box-shadow: 0 6px 24px rgba(232, 148, 58, 0.45);
            transform: translateY(-2px);
        }
        .btn--outline {
            background: transparent;
            color: #fff;
            border-color: rgba(255, 255, 255, 0.5);
        }
        .btn--outline:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: #fff;
            transform: translateY(-2px);
        }
        .btn--outline-dark {
            background: transparent;
            color: var(--color-primary);
            border-color: var(--color-primary);
        }
        .btn--outline-dark:hover {
            background: var(--color-primary);
            color: #fff;
            transform: translateY(-2px);
        }

        /* ============ 板块通用 ============ */
        .section {
            padding: 75px 0;
        }
        .section--gray {
            background: var(--color-off-white);
        }
        .section--dark {
            background: var(--color-primary);
            color: #fff;
        }
        .section__header {
            text-align: center;
            margin-bottom: 50px;
        }
        .section__tag {
            display: inline-block;
            background: var(--color-accent-light);
            color: var(--color-accent);
            padding: 5px 14px;
            border-radius: 50px;
            font-size: 0.82rem;
            font-weight: 700;
            letter-spacing: 0.6px;
            text-transform: uppercase;
            margin-bottom: 14px;
        }
        .section__title {
            font-size: 2rem;
            font-weight: 800;
            color: var(--color-primary);
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }
        .section--dark .section__title {
            color: #fff;
        }
        .section__desc {
            font-size: 1.05rem;
            color: var(--color-text-secondary);
            max-width: 640px;
            margin: 0 auto;
            line-height: 1.7;
        }
        .section--dark .section__desc {
            color: rgba(255, 255, 255, 0.75);
        }

        /* ============ 卡片网格 ============ */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .card-grid--2col {
            grid-template-columns: repeat(2, 1fr);
        }
        .card-grid--4col {
            grid-template-columns: repeat(4, 1fr);
        }
        .card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            border: 1px solid var(--color-border);
            transition: all var(--transition-normal);
            position: relative;
            overflow: hidden;
            display: flex;
            flex-direction: column;
        }
        .card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: transparent;
        }
        .card__icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            margin-bottom: 18px;
            flex-shrink: 0;
        }
        .card__icon--blue {
            background: #e8f0f9;
            color: #1a5c8a;
        }
        .card__icon--amber {
            background: #fef5ea;
            color: #d4842a;
        }
        .card__icon--green {
            background: #e7f5ec;
            color: #2d7a4a;
        }
        .card__icon--purple {
            background: #f2ecf9;
            color: #5b3e8c;
        }
        .card__title {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 8px;
        }
        .card__text {
            font-size: 0.92rem;
            color: var(--color-text-secondary);
            line-height: 1.65;
            flex-grow: 1;
        }
        .card__link {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            margin-top: 16px;
            font-weight: 700;
            font-size: 0.9rem;
            color: var(--color-accent);
            transition: gap var(--transition-fast);
        }
        .card__link:hover {
            gap: 10px;
            color: var(--color-accent-hover);
        }
        .card__image {
            border-radius: var(--radius-md);
            overflow: hidden;
            margin-bottom: 20px;
            aspect-ratio: 16 / 10;
            background: var(--color-light-gray);
        }
        .card__image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .card:hover .card__image img {
            transform: scale(1.04);
        }

        /* ============ 行业场景卡片 ============ */
        .industry-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            border: 1px solid var(--color-border);
            text-align: center;
            transition: all var(--transition-normal);
        }
        .industry-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: transparent;
        }
        .industry-card__icon {
            font-size: 2rem;
            margin-bottom: 14px;
            display: block;
        }
        .industry-card__title {
            font-weight: 700;
            font-size: 1.05rem;
            color: var(--color-primary);
            margin-bottom: 6px;
        }
        .industry-card__text {
            font-size: 0.88rem;
            color: var(--color-text-secondary);
            line-height: 1.6;
        }

        /* ============ 流程步骤 ============ */
        .steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 0;
            position: relative;
        }
        .steps::before {
            content: '';
            position: absolute;
            top: 36px;
            left: 12%;
            right: 12%;
            height: 2px;
            background: var(--color-mid-gray);
            z-index: 0;
        }
        .step {
            text-align: center;
            position: relative;
            z-index: 1;
            padding: 0 16px;
        }
        .step__num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--color-primary);
            color: #fff;
            font-weight: 800;
            font-size: 1.15rem;
            margin-bottom: 16px;
            border: 4px solid #fff;
            box-shadow: var(--shadow-md);
            position: relative;
            z-index: 2;
        }
        .step__title {
            font-weight: 700;
            font-size: 1rem;
            color: var(--color-primary);
            margin-bottom: 6px;
        }
        .step__text {
            font-size: 0.85rem;
            color: var(--color-text-secondary);
            line-height: 1.55;
        }

        /* ============ 数据统计条 ============ */
        .stats-bar {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }
        .stat__number {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--color-accent);
            line-height: 1;
            margin-bottom: 8px;
        }
        .stat__label {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.8);
            font-weight: 500;
        }

        /* ============ FAQ ============ */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: #fff;
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            overflow: hidden;
            transition: all var(--transition-fast);
        }
        .faq-item:hover {
            border-color: var(--color-mid-gray);
            box-shadow: var(--shadow-sm);
        }
        .faq-item__question {
            width: 100%;
            text-align: left;
            padding: 18px 22px;
            font-weight: 700;
            font-size: 1rem;
            color: var(--color-primary);
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            background: transparent;
            cursor: pointer;
            transition: color var(--transition-fast);
        }
        .faq-item__question:hover {
            color: var(--color-accent);
        }
        .faq-item__question i {
            font-size: 0.85rem;
            color: var(--color-text-muted);
            transition: transform var(--transition-normal);
            flex-shrink: 0;
        }
        .faq-item.open .faq-item__question i {
            transform: rotate(180deg);
            color: var(--color-accent);
        }
        .faq-item__answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-normal);
        }
        .faq-item.open .faq-item__answer {
            max-height: 300px;
        }
        .faq-item__answer-inner {
            padding: 0 22px 18px;
            font-size: 0.92rem;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }

        /* ============ CTA 板块 ============ */
        .cta-section {
            background: var(--color-primary);
            color: #fff;
            text-align: center;
            padding: 65px 0;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
            opacity: 0.12;
            z-index: 0;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-section__title {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 12px;
            color: #fff;
        }
        .cta-section__text {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 28px;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-section .btn--primary {
            font-size: 1rem;
            padding: 15px 34px;
        }

        /* ============ Footer ============ */
        .footer {
            background: var(--color-primary-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 55px 0 30px;
            font-size: 0.9rem;
        }
        .footer__grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 36px;
        }
        .footer__brand {
            font-size: 1.3rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 10px;
            letter-spacing: -0.2px;
        }
        .footer__brand-desc {
            font-size: 0.88rem;
            line-height: 1.65;
            color: rgba(255, 255, 255, 0.6);
            max-width: 320px;
        }
        .footer h4 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 14px;
            letter-spacing: 0.3px;
        }
        .footer ul {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer ul a {
            color: rgba(255, 255, 255, 0.65);
            transition: color var(--transition-fast);
            font-size: 0.88rem;
        }
        .footer ul a:hover {
            color: var(--color-accent);
        }
        .footer__bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 22px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.45);
        }

        /* ============ 响应式 - 平板 ============ */
        @media (max-width: 1024px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .card-grid--4col {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps {
                grid-template-columns: repeat(2, 1fr);
                gap: 28px;
            }
            .steps::before {
                display: none;
            }
            .stats-bar {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .footer__grid {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }
            .hero__title {
                font-size: 2.2rem;
            }
            .section {
                padding: 55px 0;
            }
            .section__title {
                font-size: 1.7rem;
            }
        }

        /* ============ 响应式 - 手机 ============ */
        @media (max-width: 768px) {
            .topbar__left span:last-child {
                display: none;
            }
            .header__nav {
                position: fixed;
                top: calc(var(--topbar-height) + var(--header-height));
                left: 0;
                right: 0;
                bottom: 0;
                background: #fff;
                flex-direction: column;
                align-items: stretch;
                padding: 20px 24px;
                gap: 4px;
                transform: translateX(100%);
                transition: transform var(--transition-normal);
                z-index: 999;
                overflow-y: auto;
            }
            .header__nav.open {
                transform: translateX(0);
            }
            .header__nav a {
                padding: 14px 16px;
                font-size: 1.05rem;
                border-radius: var(--radius-md);
            }
            .header__nav a.active::after {
                display: none;
            }
            .header__nav a.active {
                border-left: 3px solid var(--color-accent);
            }
            .header__cta {
                margin-left: 0 !important;
                justify-content: center;
                text-align: center;
                margin-top: 8px;
            }
            .header__burger {
                display: flex;
            }
            .card-grid,
            .card-grid--2col,
            .card-grid--4col {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .steps {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .stats-bar {
                grid-template-columns: 1fr 1fr;
                gap: 18px;
            }
            .stat__number {
                font-size: 2rem;
            }
            .footer__grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer__bottom {
                flex-direction: column;
                text-align: center;
                gap: 4px;
            }
            .hero {
                min-height: 420px;
            }
            .hero__title {
                font-size: 1.7rem;
            }
            .hero__subtitle {
                font-size: 1rem;
            }
            .hero__content {
                padding: 45px 0;
            }
            .section {
                padding: 45px 0;
            }
            .section__title {
                font-size: 1.45rem;
            }
            .section__header {
                margin-bottom: 32px;
            }
            .btn {
                padding: 11px 22px;
                font-size: 0.9rem;
            }
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        /* ============ 响应式 - 小手机 ============ */
        @media (max-width: 520px) {
            .hero__title {
                font-size: 1.45rem;
            }
            .hero__actions {
                flex-direction: column;
                gap: 10px;
            }
            .hero__actions .btn {
                width: 100%;
                justify-content: center;
                text-align: center;
            }
            .stats-bar {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .section__title {
                font-size: 1.3rem;
            }
            .cta-section__title {
                font-size: 1.5rem;
            }
            .card {
                padding: 22px 18px;
            }
        }

        /* ============ 辅助工具类 ============ */
        .text-center {
            text-align: center;
        }
        .mt-0 {
            margin-top: 0;
        }
        .mb-0 {
            margin-bottom: 0;
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            border: 0;
        }

/* roulang page: category3 */
:root {
            --color-primary: #1a3c6e;
            --color-primary-light: #2a5298;
            --color-primary-dark: #0f2447;
            --color-accent: #d4842a;
            --color-accent-light: #e8a44d;
            --color-accent-dark: #b06d1e;
            --color-bg: #f9fafb;
            --color-bg-alt: #f0f2f5;
            --color-bg-dark: #1a1f2e;
            --color-surface: #ffffff;
            --color-text: #1a1f2e;
            --color-text-secondary: #5a6275;
            --color-text-muted: #8890a4;
            --color-text-light: #b0b8c8;
            --color-border: #e2e6ed;
            --color-border-light: #eef1f5;
            --color-success: #2d8a56;
            --color-warning: #c7851e;
            --color-error: #c0392b;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 18px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.10);
            --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.12);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', system-ui, sans-serif;
            --font-mono: 'SF Mono', 'Cascadia Code', 'Consolas', monospace;
            --transition-fast: 0.18s ease;
            --transition-base: 0.28s ease;
            --transition-slow: 0.40s ease;
            --max-width: 1200px;
            --header-height: 72px;
            --topbar-height: 34px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            overflow-x: hidden;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            font-size: inherit;
        }

        ul,
        ol {
            list-style: none;
        }

        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
        }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 28px;
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 18px;
            }
        }

        /* ========== TOP BAR ========== */
        .topbar {
            background: var(--color-primary-dark);
            color: #c8d4e6;
            font-size: 13px;
            height: var(--topbar-height);
            line-height: var(--topbar-height);
            position: relative;
            z-index: 1001;
        }
        .topbar .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 100%;
        }
        .topbar__info span {
            margin-right: 20px;
        }
        .topbar__info i {
            margin-right: 5px;
            color: var(--color-accent-light);
        }
        .topbar__actions a {
            color: #c8d4e6;
            margin-left: 18px;
            font-size: 13px;
            transition: color var(--transition-fast);
        }
        .topbar__actions a:hover {
            color: #ffffff;
        }
        @media (max-width: 640px) {
            .topbar {
                display: none;
            }
        }

        /* ========== HEADER / NAV ========== */
        .header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--color-surface);
            border-bottom: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-xs);
            height: var(--header-height);
            transition: box-shadow var(--transition-base);
        }
        .header.scrolled {
            box-shadow: var(--shadow-md);
        }
        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .header__logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: 0.02em;
            white-space: nowrap;
            text-decoration: none;
            transition: opacity var(--transition-fast);
        }
        .header__logo:hover {
            opacity: 0.85;
        }
        .header__logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
            color: #fff;
            border-radius: var(--radius-sm);
            font-size: 0.85rem;
            font-weight: 800;
            letter-spacing: 0.04em;
            flex-shrink: 0;
        }
        .header__nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .header__nav a {
            display: inline-flex;
            align-items: center;
            padding: 10px 16px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--color-text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
        }
        .header__nav a:hover {
            color: var(--color-primary);
            background: rgba(26, 60, 110, 0.04);
        }
        .header__nav a.active {
            color: var(--color-primary);
            font-weight: 600;
            background: rgba(26, 60, 110, 0.06);
        }
        .header__nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 16px;
            right: 16px;
            height: 2.5px;
            background: var(--color-accent);
            border-radius: 2px;
        }
        .header__cta {
            display: inline-flex !important;
            align-items: center;
            gap: 6px;
            padding: 10px 20px !important;
            background: var(--color-accent) !important;
            color: #fff !important;
            border-radius: var(--radius-sm) !important;
            font-weight: 600 !important;
            font-size: 0.93rem !important;
            transition: all var(--transition-fast) !important;
            margin-left: 8px;
        }
        .header__cta:hover {
            background: var(--color-accent-dark) !important;
            color: #fff !important;
            box-shadow: var(--shadow-sm);
            transform: translateY(-1px);
        }
        .header__cta::after {
            display: none !important;
        }
        .header__burger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: background var(--transition-fast);
            z-index: 1002;
        }
        .header__burger:hover {
            background: rgba(26, 60, 110, 0.05);
        }
        .header__burger span {
            display: block;
            width: 24px;
            height: 2.5px;
            background: var(--color-primary);
            border-radius: 2px;
            transition: all var(--transition-base);
            transform-origin: center;
        }
        .header__burger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .header__burger.active span:nth-child(2) {
            opacity: 0;
            transform: scaleX(0);
        }
        .header__burger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }
        @media (max-width: 900px) {
            .header__nav {
                position: fixed;
                top: 0;
                right: -320px;
                width: 300px;
                height: 100vh;
                flex-direction: column;
                background: var(--color-surface);
                padding: 90px 28px 40px;
                gap: 4px;
                box-shadow: var(--shadow-xl);
                transition: right var(--transition-slow);
                z-index: 1001;
                overflow-y: auto;
                align-items: stretch;
            }
            .header__nav.open {
                right: 0;
            }
            .header__nav a {
                padding: 13px 16px;
                font-size: 1rem;
                border-radius: var(--radius-md);
                justify-content: flex-start;
            }
            .header__nav a.active::after {
                display: none;
            }
            .header__nav a.active {
                border-left: 3px solid var(--color-accent);
            }
            .header__cta {
                margin-left: 0 !important;
                justify-content: center !important;
                margin-top: 8px;
            }
            .header__burger {
                display: flex;
            }
            .nav-overlay {
                display: none;
                position: fixed;
                inset: 0;
                background: rgba(0, 0, 0, 0.4);
                z-index: 1000;
                transition: opacity var(--transition-base);
            }
            .nav-overlay.show {
                display: block;
            }
        }

        /* ========== PAGE BANNER ========== */
        .page-banner {
            position: relative;
            background: linear-gradient(170deg, var(--color-primary-dark) 0%, var(--color-primary) 40%, var(--color-primary-light) 100%);
            color: #ffffff;
            padding: 70px 0 60px;
            overflow: hidden;
            min-height: 320px;
            display: flex;
            align-items: center;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.18;
            mix-blend-mode: overlay;
        }
        .page-banner::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 60px;
            background: linear-gradient(to top, var(--color-bg) 0%, transparent 100%);
        }
        .page-banner .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .page-banner__badge {
            display: inline-block;
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.25);
            padding: 6px 18px;
            border-radius: 50px;
            font-size: 0.88rem;
            color: #e8d5b8;
            margin-bottom: 18px;
            letter-spacing: 0.04em;
        }
        .page-banner h1 {
            font-size: 2.8rem;
            font-weight: 800;
            letter-spacing: 0.03em;
            margin-bottom: 16px;
            line-height: 1.25;
        }
        .page-banner__subtitle {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 680px;
            margin: 0 auto;
            line-height: 1.7;
        }
        @media (max-width: 768px) {
            .page-banner {
                padding: 50px 0 45px;
                min-height: 240px;
            }
            .page-banner h1 {
                font-size: 2rem;
            }
            .page-banner__subtitle {
                font-size: 1rem;
            }
        }
        @media (max-width: 520px) {
            .page-banner h1 {
                font-size: 1.55rem;
            }
            .page-banner {
                min-height: 200px;
                padding: 40px 0 35px;
            }
        }

        /* ========== SECTION COMMON ========== */
        .section {
            padding: 70px 0;
        }
        .section--alt {
            background: var(--color-bg-alt);
        }
        .section--dark {
            background: var(--color-bg-dark);
            color: #e8ecf2;
        }
        .section__header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section__label {
            display: inline-block;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-accent);
            text-transform: uppercase;
            letter-spacing: 0.08em;
            margin-bottom: 10px;
        }
        .section__title {
            font-size: 2rem;
            font-weight: 700;
            color: inherit;
            margin-bottom: 12px;
            line-height: 1.3;
        }
        .section__desc {
            font-size: 1.05rem;
            color: var(--color-text-secondary);
            max-width: 620px;
            margin: 0 auto;
            line-height: 1.7;
        }
        .section--dark .section__desc {
            color: #b8c4d6;
        }
        @media (max-width: 768px) {
            .section {
                padding: 48px 0;
            }
            .section__title {
                font-size: 1.55rem;
            }
            .section__header {
                margin-bottom: 32px;
            }
        }

        /* ========== SERVICE CARDS ========== */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .service-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            padding: 32px 26px;
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
            position: relative;
            overflow: hidden;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
            opacity: 0;
            transition: opacity var(--transition-base);
        }
        .service-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: var(--color-border);
        }
        .service-card:hover::before {
            opacity: 1;
        }
        .service-card__icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            background: rgba(26, 60, 110, 0.07);
            color: var(--color-primary);
            flex-shrink: 0;
        }
        .service-card h3 {
            font-size: 1.18rem;
            font-weight: 700;
            color: var(--color-text);
            line-height: 1.35;
        }
        .service-card p {
            font-size: 0.93rem;
            color: var(--color-text-secondary);
            line-height: 1.65;
            flex-grow: 1;
        }
        .service-card__tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 4px;
        }
        .service-card__tag {
            font-size: 0.78rem;
            padding: 4px 12px;
            border-radius: 50px;
            background: var(--color-bg-alt);
            color: var(--color-text-secondary);
            font-weight: 500;
            transition: all var(--transition-fast);
        }
        .service-card__tag:hover {
            background: rgba(26, 60, 110, 0.08);
            color: var(--color-primary);
        }
        @media (max-width: 900px) {
            .services-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 18px;
            }
        }
        @media (max-width: 560px) {
            .services-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .service-card {
                padding: 24px 18px;
            }
        }

        /* ========== FEATURED SERVICE BLOCK ========== */
        .featured-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }
        .featured-block__image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            aspect-ratio: 4/3;
            position: relative;
        }
        .featured-block__image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .featured-block__image::after {
            content: '';
            position: absolute;
            inset: 0;
            border: 1px solid rgba(0, 0, 0, 0.06);
            border-radius: var(--radius-lg);
            pointer-events: none;
        }
        .featured-block__content h3 {
            font-size: 1.6rem;
            font-weight: 700;
            margin-bottom: 14px;
            line-height: 1.3;
        }
        .featured-block__content p {
            font-size: 1rem;
            color: var(--color-text-secondary);
            line-height: 1.75;
            margin-bottom: 18px;
        }
        .featured-block__list {
            display: flex;
            flex-direction: column;
            gap: 10px;
            margin-bottom: 20px;
        }
        .featured-block__list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 0.95rem;
            color: var(--color-text);
            line-height: 1.5;
        }
        .featured-block__list li::before {
            content: '✓';
            flex-shrink: 0;
            width: 22px;
            height: 22px;
            border-radius: 50%;
            background: var(--color-success);
            color: #fff;
            font-size: 0.7rem;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            margin-top: 2px;
        }
        @media (max-width: 768px) {
            .featured-block {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .featured-block__content h3 {
                font-size: 1.35rem;
            }
        }

        /* ========== PROCESS STEPS ========== */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 0;
            position: relative;
        }
        .process-steps::before {
            content: '';
            position: absolute;
            top: 40px;
            left: 12%;
            right: 12%;
            height: 2px;
            background: var(--color-border);
            z-index: 0;
        }
        .process-step {
            text-align: center;
            position: relative;
            z-index: 1;
            padding: 0 16px;
        }
        .process-step__number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--color-surface);
            border: 3px solid var(--color-primary);
            color: var(--color-primary);
            font-size: 1.3rem;
            font-weight: 800;
            margin-bottom: 16px;
            transition: all var(--transition-base);
            position: relative;
        }
        .process-step:hover .process-step__number {
            background: var(--color-primary);
            color: #fff;
            box-shadow: var(--shadow-md);
            transform: scale(1.08);
        }
        .process-step h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--color-text);
        }
        .process-step p {
            font-size: 0.88rem;
            color: var(--color-text-secondary);
            line-height: 1.55;
        }
        @media (max-width: 768px) {
            .process-steps {
                grid-template-columns: repeat(2, 1fr);
                gap: 28px 16px;
            }
            .process-steps::before {
                display: none;
            }
        }
        @media (max-width: 480px) {
            .process-steps {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }

        /* ========== SCENARIO CARDS ========== */
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }
        .scenario-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            border: 1px solid var(--color-border-light);
            display: flex;
            gap: 18px;
            align-items: flex-start;
            transition: all var(--transition-base);
            cursor: default;
        }
        .scenario-card:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--color-border);
        }
        .scenario-card__icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-md);
            background: rgba(212, 132, 42, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            flex-shrink: 0;
            color: var(--color-accent);
        }
        .scenario-card__info h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .scenario-card__info p {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            line-height: 1.6;
        }
        @media (max-width: 640px) {
            .scenario-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--color-surface);
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-base);
        }
        .faq-item:hover {
            border-color: var(--color-border);
        }
        .faq-item__question {
            width: 100%;
            text-align: left;
            padding: 18px 22px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-text);
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 14px;
            cursor: pointer;
            transition: background var(--transition-fast);
            background: none;
            border: none;
        }
        .faq-item__question:hover {
            background: rgba(26, 60, 110, 0.02);
        }
        .faq-item__arrow {
            width: 28px;
            height: 28px;
            flex-shrink: 0;
            border-radius: 50%;
            background: var(--color-bg-alt);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            transition: all var(--transition-base);
            color: var(--color-text-muted);
        }
        .faq-item.open .faq-item__arrow {
            transform: rotate(180deg);
            background: var(--color-primary);
            color: #fff;
        }
        .faq-item__answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-base);
            padding: 0 22px;
        }
        .faq-item.open .faq-item__answer {
            max-height: 400px;
            padding: 0 22px 20px;
        }
        .faq-item__answer p {
            font-size: 0.93rem;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            background: linear-gradient(160deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
            color: #ffffff;
            padding: 60px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-3.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.1;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 14px;
        }
        .cta-section p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 580px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 30px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1rem;
            transition: all var(--transition-base);
            cursor: pointer;
            text-decoration: none;
        }
        .btn--primary {
            background: var(--color-accent);
            color: #fff;
        }
        .btn--primary:hover {
            background: var(--color-accent-dark);
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .btn--outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.5);
        }
        .btn--outline:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
            transform: translateY(-2px);
        }
        .btn--lg {
            padding: 15px 36px;
            font-size: 1.08rem;
            border-radius: var(--radius-md);
        }
        .cta-section .btn-group {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        @media (max-width: 520px) {
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .btn--lg {
                padding: 13px 26px;
                font-size: 0.95rem;
            }
        }

        /* ========== STATS ROW ========== */
        .stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            text-align: center;
        }
        .stat-item {
            padding: 24px 16px;
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
        }
        .stat-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .stat-item__number {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--color-primary);
            line-height: 1.1;
            margin-bottom: 6px;
        }
        .stat-item__label {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            font-weight: 500;
        }
        @media (max-width: 768px) {
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
            }
            .stat-item__number {
                font-size: 1.8rem;
            }
        }
        @media (max-width: 420px) {
            .stats-row {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
        }

        /* ========== GUARANTEE BADGE ========== */
        .guarantee-badge {
            display: flex;
            align-items: center;
            gap: 12px;
            background: rgba(45, 138, 86, 0.08);
            border: 1px solid rgba(45, 138, 86, 0.2);
            padding: 14px 22px;
            border-radius: var(--radius-md);
            max-width: 500px;
            margin: 24px auto 0;
            font-size: 0.93rem;
            color: var(--color-success);
            font-weight: 500;
        }
        .guarantee-badge__icon {
            font-size: 1.6rem;
            flex-shrink: 0;
        }

        /* ========== FOOTER ========== */
        .footer {
            background: #141820;
            color: #b8c4d6;
            padding: 56px 0 28px;
            font-size: 0.92rem;
        }
        .footer__grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 36px;
        }
        .footer__brand {
            font-size: 1.3rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 10px;
        }
        .footer__brand-desc {
            font-size: 0.88rem;
            color: #8890a4;
            line-height: 1.65;
            max-width: 280px;
        }
        .footer h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: #ffffff;
            margin-bottom: 14px;
            letter-spacing: 0.03em;
        }
        .footer ul {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer ul li a {
            color: #b8c4d6;
            font-size: 0.88rem;
            transition: color var(--transition-fast);
        }
        .footer ul li a:hover {
            color: #ffffff;
        }
        .footer__bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
            font-size: 0.82rem;
            color: #6b7280;
        }
        @media (max-width: 768px) {
            .footer__grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }
        @media (max-width: 480px) {
            .footer__grid {
                grid-template-columns: 1fr;
                gap: 22px;
            }
            .footer__bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ========== MISC ========== */
        .text-accent {
            color: var(--color-accent);
        }
        .mt-12 {
            margin-top: 12px;
        }
        .mt-20 {
            margin-top: 20px;
        }
        .mt-28 {
            margin-top: 28px;
        }
        .text-center {
            text-align: center;
        }

        /* focus accessibility */
        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
            border-radius: 3px;
        }

        @media (max-width: 520px) {
            .btn-group {
                flex-direction: column;
                align-items: center;
            }
        }