/* roulang page: index */
:root {
            --color-primary: #6D28D9;
            --color-secondary: #0EA5E9;
            --color-accent: #F59E0B;
            --color-bg-light: #F5F3FF;
            --color-bg-dark: #1E1B2E;
            --color-title: #1E293B;
            --color-body: #475569;
            --color-muted: #94A3B8;
            --color-disabled: #CBD5E1;
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-input: 8px;
            --radius-pill: 20px;
            --shadow-card: 0 4px 6px -1px rgba(0, 0, 0, 0.08);
            --shadow-card-hover: 0 10px 15px -3px rgba(0, 0, 0, 0.12);
            --shadow-nav: 0 10px 15px -3px rgba(0, 0, 0, 0.08);
            --transition-base: all 0.3s ease;
            --container-max: 1280px;
            --section-gap: 5rem;
        }

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

        html {
            font-size: 16px;
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
            line-height: 1.6;
            background-color: #FFFFFF;
            color: var(--color-body);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

        button {
            cursor: pointer;
            font-family: inherit;
            transition: var(--transition-base);
        }

        input,
        textarea {
            font-family: inherit;
            transition: var(--transition-base);
        }

        .container-custom {
            max-width: var(--container-max);
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }

        @media (max-width: 640px) {
            .container-custom {
                padding-left: 1rem;
                padding-right: 1rem;
            }
            :root {
                --section-gap: 3rem;
            }
        }

        /* ===== Floating Dock Nav ===== */
        .nav-dock {
            position: fixed;
            top: 1rem;
            left: 50%;
            transform: translateX(-50%);
            z-index: 50;
            max-width: 900px;
            width: calc(100% - 2rem);
            background: rgba(255, 255, 255, 0.75);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-radius: 16px;
            box-shadow: var(--shadow-nav);
            border: 1px solid rgba(109, 40, 217, 0.10);
            padding: 0.6rem 1.2rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            transition: var(--transition-base);
        }

        .nav-dock .logo {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-weight: 700;
            font-size: 1.2rem;
            color: var(--color-primary);
            white-space: nowrap;
        }

        .nav-dock .logo-icon {
            width: 32px;
            height: 32px;
            background: linear-gradient(135deg, #6D28D9, #0EA5E9);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1rem;
            font-weight: 800;
            flex-shrink: 0;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 1.8rem;
        }

        .nav-links a {
            font-size: 0.9rem;
            font-weight: 500;
            color: #475569;
            position: relative;
            padding-bottom: 2px;
            transition: var(--transition-base);
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--color-primary);
            border-radius: 2px;
            transition: var(--transition-base);
        }

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

        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 100%;
        }

        .nav-links a.active {
            color: var(--color-primary);
            font-weight: 600;
        }

        .nav-cta {
            background: linear-gradient(135deg, #6D28D9, #7C3AED);
            color: #fff;
            border: none;
            border-radius: var(--radius-btn);
            padding: 0.5rem 1.4rem;
            font-size: 0.9rem;
            font-weight: 600;
            transition: var(--transition-base);
            white-space: nowrap;
        }

        .nav-cta:hover {
            box-shadow: 0 8px 20px rgba(109, 40, 217, 0.30);
            transform: translateY(-1px) scale(1.02);
        }

        .nav-cta:active {
            transform: scale(0.97);
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            padding: 4px;
            cursor: pointer;
        }

        .hamburger span {
            width: 24px;
            height: 2.5px;
            background: var(--color-title);
            border-radius: 3px;
            transition: var(--transition-base);
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: var(--color-bg-dark);
            z-index: 100;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 2rem;
            padding: 2rem;
        }

        .mobile-menu.open {
            display: flex;
        }

        .mobile-menu a {
            color: #fff;
            font-size: 1.5rem;
            font-weight: 600;
            transition: var(--transition-base);
        }

        .mobile-menu a:hover {
            color: var(--color-secondary);
        }

        .mobile-menu .close-btn {
            position: absolute;
            top: 1.5rem;
            right: 1.5rem;
            background: none;
            border: none;
            color: #fff;
            font-size: 2rem;
            cursor: pointer;
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            .nav-dock .nav-cta {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .nav-dock {
                padding: 0.5rem 1rem;
                top: 0.5rem;
                width: calc(100% - 1rem);
                border-radius: 12px;
            }
            .nav-dock .logo {
                font-size: 1rem;
            }
            .nav-dock .logo-icon {
                width: 28px;
                height: 28px;
                font-size: 0.8rem;
            }
        }

        /* ===== Hero ===== */
        .hero-section {
            min-height: 85vh;
            display: flex;
            align-items: center;
            position: relative;
            background: #1E1B2E;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
            opacity: 0.25;
            z-index: 1;
        }

        .hero-section::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 40%, rgba(109, 40, 217, 0.45), transparent 70%),
                radial-gradient(ellipse at 70% 60%, rgba(14, 165, 233, 0.25), transparent 60%);
            z-index: 2;
        }

        .hero-content {
            position: relative;
            z-index: 3;
            width: 100%;
            padding: 6rem 1.5rem 4rem;
        }

        .hero-content .container-custom {
            max-width: 800px;
            margin-left: 0;
        }

        .hero-title {
            font-size: 3.5rem;
            font-weight: 800;
            line-height: 1.15;
            color: #fff;
            margin-bottom: 1.2rem;
            letter-spacing: -0.02em;
        }

        .hero-title .highlight {
            background: linear-gradient(135deg, #6D28D9, #0EA5E9);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-sub {
            font-size: 1.2rem;
            color: rgba(255, 255, 255, 0.75);
            max-width: 600px;
            line-height: 1.7;
            margin-bottom: 2rem;
        }

        .hero-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            align-items: center;
        }

        .btn-primary-hero {
            background: linear-gradient(135deg, #F59E0B, #D97706);
            color: #fff;
            border: none;
            border-radius: var(--radius-btn);
            padding: 0.9rem 2.4rem;
            font-size: 1.05rem;
            font-weight: 700;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            transition: var(--transition-base);
            box-shadow: 0 4px 14px rgba(245, 158, 11, 0.30);
        }

        .btn-primary-hero:hover {
            transform: scale(1.03);
            box-shadow: 0 8px 28px rgba(245, 158, 11, 0.40);
        }

        .btn-primary-hero:active {
            transform: scale(0.97);
        }

        .btn-secondary-hero {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.40);
            border-radius: var(--radius-btn);
            padding: 0.85rem 2.2rem;
            font-size: 1.05rem;
            font-weight: 600;
            transition: var(--transition-base);
        }

        .btn-secondary-hero:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.08);
        }

        @media (max-width: 768px) {
            .hero-title {
                font-size: 2.25rem;
            }
            .hero-sub {
                font-size: 1rem;
            }
            .hero-content {
                padding: 5rem 1rem 3rem;
            }
            .hero-buttons {
                flex-direction: column;
                align-items: stretch;
            }
            .btn-primary-hero,
            .btn-secondary-hero {
                text-align: center;
                justify-content: center;
            }
        }

        @media (max-width: 480px) {
            .hero-title {
                font-size: 1.8rem;
            }
        }

        /* ===== Section Spacing ===== */
        .section-padding {
            padding-top: var(--section-gap);
            padding-bottom: var(--section-gap);
        }

        .section-title {
            font-size: 2.25rem;
            font-weight: 700;
            color: var(--color-title);
            margin-bottom: 0.5rem;
            letter-spacing: -0.01em;
        }

        .section-subtitle {
            font-size: 1.05rem;
            color: var(--color-muted);
            max-width: 640px;
            margin-bottom: 2.5rem;
        }

        .section-title-accent {
            position: relative;
            padding-left: 1rem;
        }

        .section-title-accent::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0.15em;
            width: 4px;
            height: 0.8em;
            background: var(--color-primary);
            border-radius: 3px;
        }

        @media (max-width: 768px) {
            .section-title {
                font-size: 1.75rem;
            }
            .section-subtitle {
                font-size: 0.95rem;
            }
        }

        /* ===== Card Grid ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(1, 1fr);
            gap: 1.5rem;
        }

        @media (min-width: 640px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (min-width: 1024px) {
            .card-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        @media (min-width: 1280px) {
            .card-grid {
                grid-template-columns: repeat(4, 1fr);
            }
        }

        .game-card {
            background: #fff;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: var(--transition-base);
            display: flex;
            flex-direction: column;
        }

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

        .game-card .card-img {
            aspect-ratio: 4 / 3;
            object-fit: cover;
            width: 100%;
            border-radius: var(--radius-card) var(--radius-card) 0 0;
        }

        .game-card .card-body {
            padding: 1.2rem;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .game-card .card-title {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--color-title);
            margin-bottom: 0.3rem;
        }

        .game-card .card-desc {
            font-size: 0.85rem;
            color: var(--color-muted);
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 0.8rem;
            flex: 1;
        }

        .game-card .card-price {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--color-accent);
        }

        .game-card .card-price .original {
            font-size: 0.8rem;
            color: var(--color-disabled);
            text-decoration: line-through;
            margin-left: 0.4rem;
            font-weight: 400;
        }

        .game-card .card-link {
            font-size: 0.85rem;
            color: var(--color-secondary);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            margin-top: 0.6rem;
            transition: var(--transition-base);
        }

        .game-card .card-link:hover {
            color: var(--color-primary);
            gap: 0.5rem;
        }

        .card-badge {
            position: absolute;
            top: 0.6rem;
            right: 0.6rem;
            background: var(--color-accent);
            color: #fff;
            font-size: 0.7rem;
            font-weight: 700;
            padding: 0.2rem 0.7rem;
            border-radius: var(--radius-pill);
            letter-spacing: 0.3px;
            text-transform: uppercase;
        }

        .card-img-wrap {
            position: relative;
        }

        /* ===== Review Carousel ===== */
        .review-scroll {
            display: flex;
            gap: 1.5rem;
            overflow-x: auto;
            scroll-snap-type: x mandatory;
            -webkit-overflow-scrolling: touch;
            padding-bottom: 1rem;
            scrollbar-width: thin;
            scrollbar-color: var(--color-primary) #E2E8F0;
        }

        .review-scroll::-webkit-scrollbar {
            height: 6px;
        }

        .review-scroll::-webkit-scrollbar-track {
            background: #E2E8F0;
            border-radius: 10px;
        }

        .review-scroll::-webkit-scrollbar-thumb {
            background: var(--color-primary);
            border-radius: 10px;
        }

        .review-card {
            min-width: 300px;
            max-width: 400px;
            background: #fff;
            border-radius: var(--radius-card);
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
            padding: 1.8rem;
            scroll-snap-align: start;
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
            flex-shrink: 0;
        }

        @media (min-width: 768px) {
            .review-card {
                min-width: 380px;
                max-width: 420px;
                padding: 2rem;
            }
        }

        .review-card .review-header {
            display: flex;
            align-items: center;
            gap: 0.8rem;
        }

        .review-card .avatar {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: linear-gradient(135deg, #E2E8F0, #CBD5E1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--color-muted);
            flex-shrink: 0;
        }

        .review-card .avatar img {
            width: 100%;
            height: 100%;
            border-radius: 50%;
            object-fit: cover;
        }

        .review-card .review-name {
            font-weight: 600;
            color: var(--color-title);
            font-size: 0.95rem;
        }

        .review-card .review-tag {
            font-size: 0.75rem;
            color: var(--color-muted);
        }

        .review-card .stars {
            display: flex;
            gap: 2px;
            color: var(--color-accent);
            font-size: 1rem;
        }

        .review-card .stars .empty {
            color: #E2E8F0;
        }

        .review-card .review-text {
            font-size: 0.95rem;
            color: #475569;
            line-height: 1.7;
            border-left: 4px solid var(--color-accent);
            padding-left: 1rem;
            font-style: italic;
        }

        .carousel-controls {
            display: flex;
            gap: 0.8rem;
            justify-content: center;
            margin-top: 1.5rem;
        }

        .carousel-btn {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--color-primary);
            color: #fff;
            border: none;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            transition: var(--transition-base);
            box-shadow: 0 4px 10px rgba(109, 40, 217, 0.20);
        }

        .carousel-btn:hover {
            transform: scale(1.08);
            box-shadow: 0 6px 18px rgba(109, 40, 217, 0.30);
        }

        .carousel-btn:active {
            transform: scale(0.92);
        }

        /* ===== Guarantee Bar ===== */
        .guarantee-grid {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 2rem 3rem;
            padding: 1.5rem 0;
        }

        .guarantee-item {
            display: flex;
            align-items: center;
            gap: 1rem;
            min-width: 180px;
        }

        .guarantee-icon {
            width: 52px;
            height: 52px;
            background: var(--color-bg-light);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-primary);
            font-size: 1.4rem;
            flex-shrink: 0;
            transition: var(--transition-base);
        }

        .guarantee-item:hover .guarantee-icon {
            background: var(--color-primary);
            color: #fff;
        }

        .guarantee-text h4 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-title);
            margin-bottom: 0.1rem;
        }

        .guarantee-text p {
            font-size: 0.85rem;
            color: var(--color-muted);
        }

        @media (max-width: 640px) {
            .guarantee-grid {
                gap: 1.5rem;
            }
            .guarantee-item {
                min-width: 140px;
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== CTA Banner ===== */
        .cta-banner {
            background: linear-gradient(135deg, #F59E0B, #D97706);
            padding: 4rem 2rem;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 20% 50%, rgba(255, 255, 255, 0.12), transparent 60%),
                radial-gradient(ellipse at 80% 50%, rgba(255, 255, 255, 0.08), transparent 50%);
            pointer-events: none;
        }

        .cta-banner h2 {
            font-size: 2.2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 0.8rem;
            position: relative;
            z-index: 1;
        }

        .cta-banner p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 600px;
            margin: 0 auto 2rem;
            position: relative;
            z-index: 1;
        }

        .cta-banner .btn-cta {
            background: #fff;
            color: var(--color-primary);
            border: none;
            border-radius: var(--radius-btn);
            padding: 1rem 2.8rem;
            font-size: 1.1rem;
            font-weight: 700;
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            transition: var(--transition-base);
            box-shadow: 0 4px 14px rgba(0, 0, 0, 0.10);
            position: relative;
            z-index: 1;
        }

        .cta-banner .btn-cta:hover {
            transform: scale(1.04);
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.18);
        }

        .cta-banner .btn-cta:active {
            transform: scale(0.97);
        }

        .cta-tag {
            display: inline-block;
            background: rgba(255, 255, 255, 0.20);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 0.3rem 1rem;
            border-radius: var(--radius-pill);
            margin-bottom: 1rem;
            backdrop-filter: blur(4px);
            position: relative;
            z-index: 1;
        }

        @media (max-width: 768px) {
            .cta-banner {
                padding: 3rem 1.5rem;
            }
            .cta-banner h2 {
                font-size: 1.6rem;
            }
            .cta-banner p {
                font-size: 0.95rem;
            }
            .cta-banner .btn-cta {
                width: 100%;
                justify-content: center;
                padding: 0.9rem 1.5rem;
            }
        }

        /* ===== CMS List ===== */
        .cms-list {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }

        .cms-item {
            display: flex;
            gap: 1.2rem;
            background: #fff;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 1rem;
            transition: var(--transition-base);
            align-items: flex-start;
        }

        .cms-item:hover {
            box-shadow: var(--shadow-card-hover);
        }

        .cms-item .thumb {
            width: 100px;
            height: 100px;
            border-radius: 10px;
            object-fit: cover;
            flex-shrink: 0;
        }

        .cms-item .cms-body {
            flex: 1;
            min-width: 0;
        }

        .cms-item .cms-category {
            display: inline-block;
            background: var(--color-bg-light);
            color: var(--color-primary);
            font-size: 0.7rem;
            font-weight: 600;
            padding: 0.15rem 0.6rem;
            border-radius: var(--radius-pill);
            margin-bottom: 0.3rem;
        }

        .cms-item .cms-title {
            font-size: 1rem;
            font-weight: 700;
            color: var(--color-title);
            margin-bottom: 0.2rem;
            display: -webkit-box;
            -webkit-line-clamp: 1;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .cms-item .cms-title a {
            color: inherit;
        }

        .cms-item .cms-title a:hover {
            color: var(--color-primary);
        }

        .cms-item .cms-summary {
            font-size: 0.85rem;
            color: var(--color-muted);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            line-height: 1.5;
            margin-bottom: 0.3rem;
        }

        .cms-item .cms-meta {
            font-size: 0.75rem;
            color: #94A3B8;
            display: flex;
            align-items: center;
            gap: 0.8rem;
        }

        .cms-item .cms-meta .read-more {
            color: var(--color-secondary);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 0.2rem;
            transition: var(--transition-base);
        }

        .cms-item .cms-meta .read-more:hover {
            color: var(--color-primary);
            gap: 0.4rem;
        }

        @media (min-width: 768px) {
            .cms-item .thumb {
                width: 130px;
                height: 130px;
            }
            .cms-item {
                padding: 1.2rem;
            }
        }

        @media (max-width: 520px) {
            .cms-item {
                flex-direction: column;
            }
            .cms-item .thumb {
                width: 100%;
                height: 160px;
            }
        }

        .cms-empty {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            padding: 3rem 1rem;
            color: var(--color-muted);
            text-align: center;
        }

        .cms-empty .empty-icon {
            font-size: 3rem;
            margin-bottom: 1rem;
            opacity: 0.4;
        }

        .cms-empty p {
            font-size: 1.1rem;
        }

        .btn-load-more {
            background: var(--color-secondary);
            color: #fff;
            border: none;
            border-radius: var(--radius-btn);
            padding: 0.7rem 2rem;
            font-size: 0.95rem;
            font-weight: 600;
            transition: var(--transition-base);
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            margin-top: 1.5rem;
        }

        .btn-load-more:hover {
            background: #0284C7;
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(14, 165, 233, 0.30);
        }

        .btn-load-more:active {
            transform: scale(0.97);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #1E1B2E;
            color: rgba(255, 255, 255, 0.80);
            padding-top: 4rem;
            padding-bottom: 2rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2.5rem;
        }

        @media (min-width: 768px) {
            .footer-grid {
                grid-template-columns: repeat(4, 1fr);
                gap: 2rem;
            }
        }

        .footer-col .footer-logo {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            margin-bottom: 0.8rem;
        }

        .footer-col .footer-desc {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.55);
            line-height: 1.7;
            margin-bottom: 1rem;
        }

        .footer-social {
            display: flex;
            gap: 0.6rem;
        }

        .footer-social a {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.10);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.70);
            font-size: 1rem;
            transition: var(--transition-base);
        }

        .footer-social a:hover {
            background: var(--color-primary);
            color: #fff;
        }

        .footer-col h4 {
            font-size: 1rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 1rem;
        }

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

        .footer-col ul li {
            margin-bottom: 0.5rem;
        }

        .footer-col ul a {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.55);
            transition: var(--transition-base);
        }

        .footer-col ul a:hover {
            color: var(--color-secondary);
        }

        .footer-col .contact-item {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.55);
            margin-bottom: 0.6rem;
        }

        .footer-col .contact-item i {
            width: 20px;
            color: var(--color-secondary);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            margin-top: 3rem;
            padding-top: 1.8rem;
            text-align: center;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.35);
        }

        @media (max-width: 640px) {
            .site-footer {
                padding-top: 3rem;
            }
            .footer-grid {
                gap: 2rem;
            }
            .footer-bottom {
                font-size: 0.7rem;
            }
        }

        /* ===== Utility ===== */
        .bg-brand-light {
            background-color: var(--color-bg-light);
        }

        .text-brand {
            color: var(--color-primary);
        }

        .text-brand-cyan {
            color: var(--color-secondary);
        }

        .text-brand-amber {
            color: var(--color-accent);
        }

        .focus-ring:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
            border-radius: 4px;
        }

        .btn-disabled {
            opacity: 0.5;
            pointer-events: none;
            cursor: not-allowed;
        }

        .fade-in {
            animation: fadeIn 0.6s ease both;
        }

        @keyframes fadeIn {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* ===== Floating Particles (Hero decoration) ===== */
        .hero-particles {
            position: absolute;
            inset: 0;
            z-index: 2;
            pointer-events: none;
            overflow: hidden;
        }

        .hero-particles span {
            position: absolute;
            width: 6px;
            height: 6px;
            background: rgba(255, 255, 255, 0.15);
            border-radius: 50%;
            animation: floatUp 8s infinite ease-in-out;
        }

        .hero-particles span:nth-child(1) {
            left: 10%;
            bottom: 20%;
            animation-delay: 0s;
            width: 8px;
            height: 8px;
        }
        .hero-particles span:nth-child(2) {
            left: 30%;
            bottom: 40%;
            animation-delay: 1.5s;
            width: 5px;
            height: 5px;
        }
        .hero-particles span:nth-child(3) {
            left: 55%;
            bottom: 10%;
            animation-delay: 3s;
            width: 10px;
            height: 10px;
            opacity: 0.12;
        }
        .hero-particles span:nth-child(4) {
            left: 75%;
            bottom: 50%;
            animation-delay: 4.5s;
            width: 4px;
            height: 4px;
        }
        .hero-particles span:nth-child(5) {
            left: 90%;
            bottom: 30%;
            animation-delay: 2s;
            width: 7px;
            height: 7px;
        }
        .hero-particles span:nth-child(6) {
            left: 45%;
            bottom: 70%;
            animation-delay: 6s;
            width: 6px;
            height: 6px;
        }

        @keyframes floatUp {
            0% {
                transform: translateY(0) scale(1);
                opacity: 0.2;
            }
            50% {
                opacity: 0.6;
            }
            100% {
                transform: translateY(-80vh) scale(0.5);
                opacity: 0;
            }
        }

/* roulang page: article */
:root {
            --primary: #6D28D9;
            --primary-light: #F5F3FF;
            --accent: #0EA5E9;
            --amber: #F59E0B;
            --dark-bg: #1E1B2E;
            --title: #1E293B;
            --body: #475569;
            --muted: #94A3B8;
            --border: #E2E8F0;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-xl: 16px;
            --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.12);
            --font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-sans);
            color: var(--body);
            background: #ffffff;
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea {
            font-family: inherit;
            outline: none;
        }
        .focus-ring:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }
        .container-custom {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }
        @media (max-width: 640px) {
            .container-custom {
                padding: 0 1rem;
            }
        }

        /* ===== 导航 Dock ===== */
        .nav-dock {
            position: fixed;
            top: 1rem;
            left: 50%;
            transform: translateX(-50%);
            z-index: 50;
            width: calc(100% - 2rem);
            max-width: 900px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0.75rem 1.5rem;
            background: rgba(255, 255, 255, 0.75);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow-lg);
            border: 1px solid rgba(109, 40, 217, 0.10);
        }
        .nav-dock .logo {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-size: 1.2rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.01em;
        }
        .nav-dock .logo .logo-icon {
            width: 32px;
            height: 32px;
            background: linear-gradient(135deg, #6D28D9, #0EA5E9);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 0.9rem;
            font-weight: 800;
            flex-shrink: 0;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 1.5rem;
        }
        .nav-links a {
            font-size: 0.95rem;
            font-weight: 500;
            color: #475569;
            padding: 0.25rem 0;
            position: relative;
            transition: color 0.2s ease;
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transition: width 0.25s ease;
        }
        .nav-links a:hover {
            color: var(--primary);
        }
        .nav-links a:hover::after {
            width: 100%;
        }
        .nav-links a.active {
            color: var(--primary);
            font-weight: 700;
        }
        .nav-links a.active::after {
            width: 100%;
        }
        .nav-cta {
            background: linear-gradient(135deg, #6D28D9, #7C3AED);
            color: #fff;
            border: none;
            padding: 0.5rem 1.4rem;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.9rem;
            cursor: pointer;
            transition: all 0.25s ease;
            box-shadow: 0 2px 8px rgba(109, 40, 217, 0.25);
            white-space: nowrap;
        }
        .nav-cta:hover {
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(109, 40, 217, 0.35);
        }
        .nav-cta:active {
            transform: translateY(0);
        }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 4px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 6px;
            border-radius: 6px;
        }
        .hamburger span {
            display: block;
            width: 22px;
            height: 2.5px;
            background: #1E293B;
            border-radius: 2px;
            transition: all 0.3s ease;
        }
        .mobile-menu {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: var(--dark-bg);
            z-index: 60;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 2rem;
            padding: 2rem;
        }
        .mobile-menu a {
            color: #fff;
            font-size: 1.5rem;
            font-weight: 600;
            transition: color 0.2s ease;
        }
        .mobile-menu a:hover {
            color: #A78BFA;
        }
        .mobile-menu a.active {
            color: #A78BFA;
            text-decoration: underline;
        }
        .mobile-menu .close-btn {
            position: absolute;
            top: 1.2rem;
            right: 1.5rem;
            background: none;
            border: none;
            color: #fff;
            font-size: 2.5rem;
            cursor: pointer;
            line-height: 1;
        }
        @media (max-width: 767px) {
            .nav-links {
                display: none;
            }
            .nav-cta {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .mobile-menu.open {
                display: flex;
            }
            .nav-dock {
                top: 0.75rem;
                padding: 0.6rem 1rem;
            }
        }

        /* ===== 面包屑 ===== */
        .breadcrumb {
            padding: 6rem 0 1rem 0;
            font-size: 0.85rem;
            color: #94A3B8;
        }
        .breadcrumb a {
            color: #6D28D9;
            transition: color 0.2s;
        }
        .breadcrumb a:hover {
            color: #5B21B6;
            text-decoration: underline;
        }
        .breadcrumb span {
            color: #1E293B;
        }
        .breadcrumb .sep {
            margin: 0 0.4rem;
            color: #CBD5E1;
        }

        /* ===== 文章主体 ===== */
        .article-content {
            max-width: 768px;
            margin: 0 auto;
            padding: 2rem 0 3rem;
        }
        .article-content h1 {
            font-size: 2.25rem;
            font-weight: 800;
            color: #1E293B;
            line-height: 1.25;
            margin-bottom: 1rem;
            letter-spacing: -0.02em;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 1rem;
            font-size: 0.875rem;
            color: #94A3B8;
            margin-bottom: 2rem;
            padding-bottom: 1.5rem;
            border-bottom: 1px solid #E2E8F0;
        }
        .article-meta .badge-cat {
            background: #F5F3FF;
            color: #6D28D9;
            padding: 0.2rem 0.8rem;
            border-radius: 20px;
            font-weight: 600;
            font-size: 0.75rem;
        }
        .article-body {
            font-size: 1.05rem;
            line-height: 1.85;
            color: #334155;
        }
        .article-body p {
            margin-bottom: 1.5em;
        }
        .article-body img {
            border-radius: var(--radius-sm);
            margin: 2rem auto;
            max-width: 100%;
            box-shadow: var(--shadow);
        .article-body figcaption,
        .article-body .img-caption {
            text-align: center;
            font-size: 0.8rem;
            color: #94A3B8;
            margin-top: -1rem;
            margin-bottom: 2rem;
            font-style: italic;
        }
        .article-body blockquote {
            border-left: 4px solid #6D28D9;
            background: #F5F3FF;
            padding: 1.2rem 1.5rem;
            margin: 1.5rem 0;
            border-radius: 0 8px 8px 0;
            font-style: italic;
            color: #475569;
        }
        .article-body ul,
        .article-body ol {
            padding-left: 1.5em;
            margin-bottom: 1.5em;
        }
        .article-body li {
            margin-bottom: 0.5em;
        }
        .article-body pre {
            background: #1E293B;
            color: #E2E8F0;
            padding: 1.2rem 1.5rem;
            border-radius: 8px;
            overflow-x: auto;
            font-size: 0.9rem;
            line-height: 1.6;
            margin: 1.5rem 0;
        }
        .article-body code {
            font-family: 'JetBrains Mono', 'Fira Code', monospace;
            font-size: 0.9em;
            background: #F1F5F9;
            padding: 0.15em 0.4em;
            border-radius: 4px;
        }
        .article-body pre code {
            background: transparent;
            padding: 0;
            color: inherit;
        }
        .article-body a {
            color: #0EA5E9;
            text-decoration: underline;
            text-underline-offset: 2px;
        }
        .article-body a:hover {
            color: #0284C7;
        }

        /* ===== 相关推荐 ===== */
        .related-section {
            max-width: 768px;
            margin: 0 auto;
            padding: 2rem 0 3rem;
            border-top: 1px solid #E2E8F0;
        }
        .related-section h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: #1E293B;
            margin-bottom: 1.5rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .related-section h2::before {
            content: '';
            width: 4px;
            height: 1.4rem;
            background: #6D28D9;
            border-radius: 2px;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }
        .related-card {
            background: #fff;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            overflow: hidden;
            transition: all 0.3s ease;
            border: 1px solid #F1F5F9;
        }
        .related-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-lg);
        }
        .related-card img {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
        }
        .related-card .card-body {
            padding: 1rem 1.2rem 1.2rem;
        }
        .related-card .card-body h3 {
            font-size: 1rem;
            font-weight: 700;
            color: #1E293B;
            margin-bottom: 0.4rem;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .card-body h3 a {
            color: inherit;
            text-decoration: none;
        }
        .related-card .card-body h3 a:hover {
            color: #6D28D9;
        }
        .related-card .card-body .time {
            font-size: 0.75rem;
            color: #94A3B8;
        }
        .back-link {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            color: #0EA5E9;
            font-weight: 500;
            font-size: 0.95rem;
            margin-top: 1.5rem;
            transition: gap 0.2s ease;
        }
        .back-link:hover {
            gap: 0.7rem;
            color: #0284C7;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #1E1B2E;
            color: rgba(255, 255, 255, 0.85);
            padding: 4rem 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 2.5rem;
        }
        .footer-logo {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-size: 1.2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 0.8rem;
        }
        .footer-desc {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.7;
            margin-bottom: 1.2rem;
        }
        .footer-social {
            display: flex;
            gap: 0.8rem;
        }
        .footer-social a {
            width: 36px;
            height: 36px;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.7);
            transition: all 0.25s ease;
        }
        .footer-social a:hover {
            background: rgba(255, 255, 255, 0.18);
            color: #fff;
            transform: translateY(-2px);
        }
        .footer-social a svg {
            width: 18px;
            height: 18px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 1rem;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
        }
        .footer-col ul li {
            margin-bottom: 0.6rem;
        }
        .footer-col ul a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.85rem;
            transition: color 0.2s ease;
        }
        .footer-col ul a:hover {
            color: #0EA5E9;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            text-align: center;
            padding: 1.5rem 0;
            margin-top: 3rem;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.4);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-bottom a:hover {
            color: #0EA5E9;
        }
        @media (max-width: 767px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
            .article-content h1 {
                font-size: 1.6rem;
            }
            .breadcrumb {
                padding-top: 5rem;
                font-size: 0.75rem;
            }
            .nav-dock {
                top: 0.5rem;
                width: calc(100% - 1rem);
                padding: 0.5rem 0.8rem;
            }
            .nav-dock .logo {
                font-size: 1rem;
            }
            .nav-dock .logo .logo-icon {
                width: 28px;
                height: 28px;
                font-size: 0.75rem;
            }
        }
        @media (min-width: 768px) and (max-width: 1023px) {
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 400px) {
            .article-meta {
                flex-direction: column;
                align-items: flex-start;
                gap: 0.4rem;
            }
        }

        /* ===== 空状态 ===== */
        .not-found-box {
            text-align: center;
            padding: 4rem 2rem;
            max-width: 500px;
            margin: 2rem auto;
        }
        .not-found-box .icon {
            font-size: 4rem;
            color: #CBD5E1;
            margin-bottom: 1.5rem;
        }
        .not-found-box h2 {
            font-size: 1.5rem;
            color: #1E293B;
            margin-bottom: 0.5rem;
        }
        .not-found-box p {
            color: #94A3B8;
            margin-bottom: 1.5rem;
        }
        .not-found-box a {
            color: #0EA5E9;
            font-weight: 500;
        }
        .not-found-box a:hover {
            text-decoration: underline;
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #6D28D9;
            --primary-light: #7C3AED;
            --primary-dark: #5B21B6;
            --secondary: #0EA5E9;
            --accent: #F59E0B;
            --accent-light: #FBBF24;
            --bg-white: #FFFFFF;
            --bg-light: #F5F3FF;
            --bg-dark: #1E1B2E;
            --text-heading: #1E293B;
            --text-body: #475569;
            --text-muted: #94A3B8;
            --text-disabled: #CBD5E1;
            --border-color: #E2E8F0;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
            --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.12);
            --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.15);
            --transition: all 0.25s ease;
            --max-width: 1280px;
            --gap-section: 5rem;
            --gap-section-mobile: 3rem;
        }

        /* ===== Reset / Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", sans-serif;
            line-height: 1.6;
            color: var(--text-body);
            background: var(--bg-white);
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--secondary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: 1rem;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--text-heading);
            line-height: 1.25;
            font-weight: 700;
        }

        /* ===== 容器 ===== */
        .container-custom {
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }
        @media (max-width: 640px) {
            .container-custom {
                padding-left: 1rem;
                padding-right: 1rem;
            }
        }

        /* ===== 导航 Dock ===== */
        .nav-dock {
            position: fixed;
            top: 0.75rem;
            left: 50%;
            transform: translateX(-50%);
            z-index: 50;
            max-width: 56rem;
            width: calc(100% - 2rem);
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0.6rem 1.5rem;
            background: rgba(255, 255, 255, 0.75);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-lg);
            border: 1px solid rgba(109, 40, 217, 0.10);
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.02em;
        }
        .logo:hover {
            color: var(--primary-dark);
        }
        .logo-icon {
            width: 32px;
            height: 32px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 0.9rem;
            font-weight: 800;
            flex-shrink: 0;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 1.5rem;
        }
        .nav-links a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-body);
            padding: 0.25rem 0;
            position: relative;
            transition: var(--transition);
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transition: var(--transition);
        }
        .nav-links a:hover {
            color: var(--primary);
        }
        .nav-links a:hover::after {
            width: 100%;
        }
        .nav-links a.active {
            color: var(--primary);
            font-weight: 700;
        }
        .nav-links a.active::after {
            width: 100%;
        }
        .nav-cta {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            font-weight: 600;
            font-size: 0.9rem;
            padding: 0.5rem 1.25rem;
            border: none;
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .nav-cta:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-1px);
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
        }
        .nav-cta:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            gap: 4px;
            width: 36px;
            height: 36px;
            background: transparent;
            border: none;
            cursor: pointer;
            border-radius: 6px;
            transition: var(--transition);
        }
        .hamburger span {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--text-heading);
            border-radius: 2px;
            transition: var(--transition);
        }
        .hamburger:hover span {
            background: var(--primary);
        }
        .hamburger:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        /* 移动端菜单 */
        .mobile-menu {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100vh;
            background: var(--bg-dark);
            z-index: 100;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 1.5rem;
            padding: 2rem;
        }
        .mobile-menu.open {
            display: flex;
        }
        .mobile-menu .close-btn {
            position: absolute;
            top: 1.2rem;
            right: 1.2rem;
            background: transparent;
            border: none;
            color: #fff;
            font-size: 2.2rem;
            cursor: pointer;
            width: 44px;
            height: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            transition: var(--transition);
        }
        .mobile-menu .close-btn:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .mobile-menu .close-btn:focus-visible {
            outline: 2px solid #fff;
            outline-offset: 2px;
        }
        .mobile-menu a {
            color: rgba(255, 255, 255, 0.85);
            font-size: 1.4rem;
            font-weight: 500;
            transition: var(--transition);
            padding: 0.4rem 0;
        }
        .mobile-menu a:hover,
        .mobile-menu a.active {
            color: #fff;
            text-decoration: underline;
            text-underline-offset: 6px;
        }
        .mobile-menu a.active {
            font-weight: 700;
        }

        /* ===== Hero 区 ===== */
        .hero-section {
            position: relative;
            min-height: 75vh;
            display: flex;
            align-items: center;
            background: var(--bg-dark);
            overflow: hidden;
            padding-top: 5rem;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
            opacity: 0.25;
            mix-blend-mode: overlay;
        }
        .hero-section::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(109, 40, 217, 0.35) 0%, transparent 70%),
                radial-gradient(ellipse at 70% 30%, rgba(14, 165, 233, 0.25) 0%, transparent 60%);
            pointer-events: none;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 720px;
            padding: 3rem 0;
        }
        .hero-content h1 {
            font-size: 3.5rem;
            line-height: 1.1;
            color: #fff;
            font-weight: 800;
            letter-spacing: -0.02em;
            margin-bottom: 1.25rem;
        }
        .hero-content h1 .highlight {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-content p {
            font-size: 1.2rem;
            color: rgba(255, 255, 255, 0.75);
            max-width: 600px;
            margin-bottom: 2rem;
            line-height: 1.7;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            align-items: center;
        }
        .btn-primary-hero {
            background: linear-gradient(135deg, var(--accent), #D97706);
            color: #fff;
            font-weight: 700;
            font-size: 1.05rem;
            padding: 0.9rem 2.5rem;
            border: none;
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 0 20px rgba(245, 158, 11, 0.25);
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .btn-primary-hero:hover {
            box-shadow: 0 0 30px rgba(245, 158, 11, 0.4);
            transform: scale(1.02);
        }
        .btn-primary-hero:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
        }
        .btn-secondary-hero {
            background: transparent;
            color: #fff;
            font-weight: 600;
            font-size: 1.05rem;
            padding: 0.85rem 2rem;
            border: 2px solid rgba(255, 255, 255, 0.6);
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .btn-secondary-hero:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.06);
        }
        .btn-secondary-hero:focus-visible {
            outline: 2px solid #fff;
            outline-offset: 3px;
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: var(--gap-section) 0;
        }
        .section-title {
            font-size: 2.25rem;
            font-weight: 800;
            text-align: center;
            margin-bottom: 0.75rem;
            color: var(--text-heading);
        }
        .section-subtitle {
            font-size: 1.1rem;
            color: var(--text-muted);
            text-align: center;
            max-width: 680px;
            margin: 0 auto 2.5rem auto;
        }
        .section-title-left {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-heading);
            margin-bottom: 0.75rem;
            position: relative;
            padding-left: 1rem;
        }
        .section-title-left::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0.2rem;
            bottom: 0.2rem;
            width: 4px;
            background: var(--primary);
            border-radius: 4px;
        }

        /* ===== 卡片网格 ===== */
        .grid-cards {
            display: grid;
            grid-template-columns: repeat(1, 1fr);
            gap: 1.5rem;
        }
        @media (min-width: 640px) {
            .grid-cards {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (min-width: 1024px) {
            .grid-cards {
                grid-template-columns: repeat(3, 1fr);
            }
        }
        .card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-md);
            overflow: hidden;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }
        .card-img {
            aspect-ratio: 16 / 9;
            object-fit: cover;
            width: 100%;
        }
        .card-body {
            padding: 1.25rem 1.5rem 1.5rem;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .card-body h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 0.4rem;
        }
        .card-body p {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.6;
            flex: 1;
        }
        .card .badge {
            display: inline-block;
            font-size: 0.7rem;
            font-weight: 700;
            padding: 0.2rem 0.7rem;
            border-radius: var(--radius-xl);
            background: var(--accent);
            color: #fff;
            letter-spacing: 0.02em;
            margin-bottom: 0.5rem;
            align-self: flex-start;
        }
        .card .badge-purple {
            background: var(--primary);
        }

        /* ===== 流程步骤 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(1, 1fr);
            gap: 2rem;
        }
        @media (min-width: 640px) {
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (min-width: 1024px) {
            .steps-grid {
                grid-template-columns: repeat(4, 1fr);
            }
        }
        .step-card {
            text-align: center;
            padding: 1.5rem 1rem;
            background: var(--bg-white);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--border-color);
        }
        .step-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .step-number {
            width: 48px;
            height: 48px;
            margin: 0 auto 1rem;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.2rem;
            font-weight: 800;
        }
        .step-card h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 0.4rem;
        }
        .step-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        /* ===== 保障条 ===== */
        .guarantee-grid {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 2rem 3rem;
            padding: 1.5rem 0;
        }
        .guarantee-item {
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }
        .guarantee-icon {
            width: 48px;
            height: 48px;
            background: var(--bg-light);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 1.3rem;
            flex-shrink: 0;
        }
        .guarantee-text h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-heading);
        }
        .guarantee-text p {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        /* ===== FAQ 手风琴 ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius-sm);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            margin-bottom: 0.75rem;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-md);
        }
        .faq-question {
            width: 100%;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 1.5rem;
            background: transparent;
            border: none;
            cursor: pointer;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-heading);
            text-align: left;
            transition: var(--transition);
            gap: 1rem;
        }
        .faq-question:hover {
            background: var(--bg-light);
        }
        .faq-question:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: -2px;
        }
        .faq-question .arrow {
            font-size: 1.1rem;
            color: var(--text-muted);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question .arrow {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 1.5rem;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 1.5rem 1.2rem;
        }
        .faq-answer p {
            color: var(--text-body);
            font-size: 0.95rem;
            line-height: 1.7;
        }

        /* ===== CTA 区 ===== */
        .cta-section {
            background: linear-gradient(135deg, #1E1B2E, #2D1B69);
            padding: 4rem 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(109, 40, 217, 0.2) 0%, transparent 70%);
            pointer-events: none;
        }
        .cta-section h2 {
            font-size: 2.5rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 0.75rem;
            position: relative;
            z-index: 1;
        }
        .cta-section p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.7);
            max-width: 560px;
            margin: 0 auto 2rem;
            position: relative;
            z-index: 1;
        }
        .cta-btn {
            background: #fff;
            color: var(--primary);
            font-weight: 700;
            font-size: 1.1rem;
            padding: 1rem 2.8rem;
            border: none;
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: var(--transition);
            box-shadow: var(--shadow-md);
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            position: relative;
            z-index: 1;
        }
        .cta-btn:hover {
            box-shadow: var(--shadow-xl);
            transform: scale(1.04);
        }
        .cta-btn:focus-visible {
            outline: 2px solid #fff;
            outline-offset: 3px;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #0F172A;
            color: rgba(255, 255, 255, 0.7);
            padding: 3rem 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2rem;
        }
        @media (min-width: 640px) {
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (min-width: 1024px) {
            .footer-grid {
                grid-template-columns: repeat(4, 1fr);
            }
        }
        .footer-col h4 {
            color: #fff;
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 1rem;
        }
        .footer-col ul li {
            margin-bottom: 0.5rem;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--secondary);
        }
        .footer-logo {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 1.2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 0.75rem;
        }
        .footer-desc {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.5);
            line-height: 1.7;
            margin-bottom: 1rem;
        }
        .footer-social {
            display: flex;
            gap: 0.75rem;
        }
        .footer-social a {
            width: 36px;
            height: 36px;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.6);
            font-size: 1rem;
            transition: var(--transition);
        }
        .footer-social a:hover {
            background: var(--primary);
            color: #fff;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 1.25rem 0;
            margin-top: 2rem;
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.35);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1023px) {
            .nav-links {
                display: none;
            }
            .nav-cta {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .hero-content h1 {
                font-size: 2.5rem;
            }
            .hero-content p {
                font-size: 1.05rem;
            }
            .section-title {
                font-size: 1.75rem;
            }
            .cta-section h2 {
                font-size: 1.8rem;
            }
        }
        @media (max-width: 639px) {
            .hero-content h1 {
                font-size: 2rem;
            }
            .hero-content p {
                font-size: 0.95rem;
            }
            .section {
                padding: var(--gap-section-mobile) 0;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .section-subtitle {
                font-size: 0.95rem;
            }
            .btn-primary-hero,
            .btn-secondary-hero {
                width: 100%;
                justify-content: center;
                padding: 0.85rem 1.5rem;
            }
            .hero-actions {
                flex-direction: column;
            }
            .guarantee-grid {
                gap: 1.2rem;
            }
            .guarantee-item {
                width: 100%;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .cta-btn {
                width: 100%;
                justify-content: center;
            }
            .footer-grid {
                gap: 1.5rem;
            }
            .faq-question {
                font-size: 0.95rem;
                padding: 0.85rem 1rem;
            }
            .faq-answer {
                padding: 0 1rem;
            }
            .faq-item.open .faq-answer {
                padding: 0 1rem 1rem;
            }
        }
        @media (max-width: 480px) {
            .nav-dock {
                padding: 0.5rem 1rem;
                top: 0.5rem;
                width: calc(100% - 1rem);
                border-radius: var(--radius-md);
            }
            .logo {
                font-size: 1.05rem;
            }
            .logo-icon {
                width: 28px;
                height: 28px;
                font-size: 0.75rem;
            }
        }

        /* ===== focus-ring 工具 ===== */
        .focus-ring:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        /* ===== 动画 ===== */
        @keyframes fadeUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .animate-fade-up {
            animation: fadeUp 0.6s ease forwards;
        }
        .delay-1 {
            animation-delay: 0.1s;
        }
        .delay-2 {
            animation-delay: 0.2s;
        }
        .delay-3 {
            animation-delay: 0.3s;
        }
        .delay-4 {
            animation-delay: 0.4s;
        }

        /* ===== 图片占位辅助 ===== */
        .img-placeholder-bg {
            background: var(--bg-light);
        }

        /* ===== 标签云/场景标签 ===== */
        .scene-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem;
            justify-content: center;
        }
        .scene-tag {
            display: inline-block;
            padding: 0.45rem 1.2rem;
            border-radius: var(--radius-xl);
            font-size: 0.85rem;
            font-weight: 600;
            background: var(--bg-light);
            color: var(--primary);
            border: 1px solid rgba(109, 40, 217, 0.15);
            transition: var(--transition);
        }
        .scene-tag:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            transform: translateY(-1px);
        }

        /* ===== 数据统计 ===== */
        .stat-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1.5rem;
            max-width: 600px;
            margin: 0 auto;
        }
        @media (min-width: 640px) {
            .stat-grid {
                grid-template-columns: repeat(4, 1fr);
                max-width: 100%;
            }
        }
        .stat-item {
            text-align: center;
            padding: 1rem;
        }
        .stat-number {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }
        .stat-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 0.25rem;
        }

        /* ===== 辅助背景区 ===== */
        .bg-light-section {
            background: var(--bg-light);
        }

        /* ===== 两栏图文 ===== */
        .two-col {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2rem;
            align-items: center;
        }
        @media (min-width: 768px) {
            .two-col {
                grid-template-columns: 1fr 1fr;
            }
        }
        .two-col-img img {
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-md);
            width: 100%;
        }