/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --bg-primary: #0A1128;
            --bg-panel: #12224A;
            --bg-card: rgba(255, 255, 255, 0.06);
            --bg-card-hover: rgba(255, 255, 255, 0.10);
            --accent-cyan: #00D4FF;
            --accent-lime: #B6FF3D;
            --text-primary: #F0F6FF;
            --text-secondary: #A0B3D9;
            --text-muted: #5C6F94;
            --border-white: rgba(255, 255, 255, 0.12);
            --border-cyan: rgba(0, 212, 255, 0.3);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 14px;
            --radius-xl: 20px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
            --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.5);
            --shadow-cyan: 0 0 24px rgba(0, 212, 255, 0.4);
            --transition: all 0.25s ease;
            --font-family: system-ui, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --container-width: 1200px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-family);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

        a {
            color: var(--accent-cyan);
            text-decoration: none;
            transition: var(--transition);
        }

        a:hover {
            color: #33DEFF;
        }

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

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

        ul, ol {
            list-style: none;
        }

        h1, h2, h3, h4, h5 {
            line-height: 1.25;
            font-weight: 700;
        }

        :focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 3px;
            border-radius: 4px;
        }

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

        /* ===== 通用按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 28px;
            border-radius: 10px;
            font-size: 16px;
            font-weight: 700;
            line-height: 1.2;
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
            border: 1px solid transparent;
            min-height: 48px;
        }

        .btn-primary {
            background: var(--accent-cyan);
            color: #0A1128;
            box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2), inset 0 -2px 0 rgba(0, 0, 0, 0.15);
        }

        .btn-primary:hover {
            background: #33DEFF;
            color: #0A1128;
            box-shadow: var(--shadow-cyan);
            transform: translateY(-2px);
        }

        .btn-primary:active {
            transform: translateY(0px);
        }

        .btn-secondary {
            background: rgba(0, 212, 255, 0.06);
            border: 1px solid rgba(0, 212, 255, 0.4);
            color: var(--accent-cyan);
        }

        .btn-secondary:hover {
            background: rgba(0, 212, 255, 0.12);
            color: var(--accent-cyan);
            border-color: rgba(0, 212, 255, 0.6);
            transform: translateY(-2px);
        }

        .btn-secondary:active {
            transform: translateY(0px);
        }

        .btn-lime {
            background: var(--accent-lime);
            color: #0A1128;
            font-weight: 700;
        }

        .btn-lime:hover {
            background: #C9FF66;
            color: #0A1128;
            box-shadow: 0 0 24px rgba(182, 255, 61, 0.35);
            transform: translateY(-2px);
        }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            padding: 12px 0 0;
            background: linear-gradient(180deg, rgba(10, 17, 40, 0.9) 0%, rgba(10, 17, 40, 0.75) 80%, rgba(10, 17, 40, 0.4) 100%);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
        }

        .nav-card {
            display: flex;
            align-items: center;
            justify-content: space-between;
            background: rgba(18, 34, 74, 0.65);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 16px;
            padding: 10px 16px 10px 24px;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.25);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            min-height: 64px;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 17px;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: 0.3px;
            white-space: nowrap;
        }

        .nav-logo i {
            font-size: 22px;
            color: var(--accent-cyan);
        }

        .nav-logo:hover {
            color: var(--accent-cyan);
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 4px;
            flex: 1;
            justify-content: center;
            margin: 0 20px;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 10px 18px;
            border-radius: 10px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-secondary);
            transition: var(--transition);
            border: 1px solid transparent;
            white-space: nowrap;
        }

        .nav-link i {
            margin-right: 6px;
            font-size: 14px;
            opacity: 0.8;
        }

        .nav-link:hover {
            color: var(--text-primary);
            background: rgba(0, 212, 255, 0.08);
            border-color: rgba(0, 212, 255, 0.2);
        }

        .nav-link.active {
            color: var(--accent-cyan);
            background: rgba(0, 212, 255, 0.1);
            border-color: rgba(0, 212, 255, 0.3);
        }

        .nav-cta {
            padding: 10px 20px;
            font-size: 14px;
            min-height: 42px;
            border-radius: 10px;
            background: var(--accent-lime);
            color: #0A1128;
            font-weight: 700;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            white-space: nowrap;
        }

        .nav-cta:hover {
            background: #C9FF66;
            color: #0A1128;
            box-shadow: 0 0 20px rgba(182, 255, 61, 0.3);
        }

        .nav-toggle {
            display: none;
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            border: 1px solid rgba(255, 255, 255, 0.15);
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-primary);
            font-size: 20px;
            cursor: pointer;
            transition: var(--transition);
        }

        .nav-toggle:hover {
            border-color: rgba(0, 212, 255, 0.4);
            color: var(--accent-cyan);
        }

        /* 移动端菜单 */
        .mobile-menu {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            z-index: 900;
            background: rgba(10, 17, 40, 0.98);
            backdrop-filter: blur(30px);
            -webkit-backdrop-filter: blur(30px);
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 12px;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.3s ease;
        }

        .mobile-menu.active {
            opacity: 1;
            pointer-events: auto;
        }

        .mobile-menu-link {
            font-size: 22px;
            font-weight: 700;
            color: var(--text-primary);
            padding: 16px 32px;
            border-radius: 14px;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .mobile-menu-link:hover,
        .mobile-menu-link.active {
            color: var(--accent-cyan);
            background: rgba(0, 212, 255, 0.08);
        }

        .mobile-menu-close {
            position: absolute;
            top: 24px;
            right: 24px;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            border: 1px solid rgba(255, 255, 255, 0.15);
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-primary);
            font-size: 18px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        /* ===== Hero 区域 ===== */
        .hero {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            padding: 140px 0 80px;
            background:
                linear-gradient(135deg, rgba(10, 17, 40, 0.92) 0%, rgba(10, 17, 40, 0.72) 55%, rgba(10, 17, 40, 0.88) 100%),
                url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -20%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(0, 212, 255, 0.15) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 120px;
            background: linear-gradient(180deg, transparent 0%, rgba(10, 17, 40, 0.9) 100%);
            pointer-events: none;
        }

        .hero-inner {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 60px;
            align-items: center;
            position: relative;
            z-index: 2;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            border-radius: 100px;
            background: rgba(0, 212, 255, 0.12);
            border: 1px solid rgba(0, 212, 255, 0.3);
            color: var(--accent-cyan);
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 20px;
            letter-spacing: 0.5px;
        }

        .hero-badge i {
            font-size: 12px;
        }

        .hero h1 {
            font-size: 44px;
            line-height: 1.25;
            color: var(--text-primary);
            margin-bottom: 20px;
            letter-spacing: -0.5px;
            font-weight: 800;
        }

        .hero h1 .highlight {
            color: var(--accent-cyan);
            position: relative;
        }

        .hero h1 .highlight::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 0;
            right: 0;
            height: 8px;
            background: rgba(0, 212, 255, 0.2);
            border-radius: 4px;
            z-index: -1;
        }

        .hero-subtitle {
            font-size: 17px;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 520px;
            margin-bottom: 32px;
        }

        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 32px;
        }

        .hero-trust {
            display: flex;
            gap: 24px;
            flex-wrap: wrap;
        }

        .hero-trust span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            color: var(--text-secondary);
        }

        .hero-trust i {
            color: var(--accent-lime);
            font-size: 12px;
        }

        /* Hero 右视觉面板 */
        .hero-visual {
            position: relative;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .hero-step-card {
            display: flex;
            align-items: center;
            gap: 16px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 14px;
            padding: 20px 22px;
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            box-shadow: var(--shadow-card);
            transition: var(--transition);
        }

        .hero-step-card:hover {
            background: rgba(255, 255, 255, 0.10);
            border-color: rgba(0, 212, 255, 0.3);
            box-shadow: var(--shadow-hover), 0 0 0 1px rgba(0, 212, 255, 0.2);
            transform: translateY(-3px);
        }

        .hero-step-card .step-num {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(0, 212, 255, 0.15);
            border: 1px solid rgba(0, 212, 255, 0.3);
            color: var(--accent-cyan);
            font-size: 16px;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .hero-step-card h3 {
            font-size: 16px;
            color: var(--text-primary);
            margin-bottom: 4px;
        }

        .hero-step-card p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.5;
        }

        .hero-step-card.alt .step-num {
            background: rgba(182, 255, 61, 0.12);
            border-color: rgba(182, 255, 61, 0.3);
            color: var(--accent-lime);
        }

        /* ===== 信任保障条 ===== */
        .trust-bar {
            background: rgba(18, 34, 74, 0.4);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            padding: 28px 0;
        }

        .trust-inner {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .trust-item {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 8px 12px;
        }

        .trust-item .trust-icon {
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: rgba(0, 212, 255, 0.1);
            border: 1px solid rgba(0, 212, 255, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-size: 18px;
        }

        .trust-item .trust-text {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-primary);
            line-height: 1.4;
        }

        .trust-item .trust-sub {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* ===== 区块通用 ===== */
        .section {
            padding: 96px 0;
        }

        .section-sm {
            padding: 64px 0;
        }

        .section-head {
            margin-bottom: 40px;
            text-align: center;
            max-width: 680px;
            margin-left: auto;
            margin-right: auto;
        }

        .section-head h2 {
            font-size: 30px;
            color: var(--text-primary);
            margin-bottom: 12px;
            font-weight: 800;
        }

        .section-head p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .section-head .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--accent-cyan);
            background: rgba(0, 212, 255, 0.1);
            border: 1px solid rgba(0, 212, 255, 0.2);
            border-radius: 100px;
            padding: 4px 14px;
            margin-bottom: 12px;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        /* ===== 服务卡片网格 ===== */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .service-card {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 16px;
            overflow: hidden;
            transition: var(--transition);
            box-shadow: var(--shadow-card);
        }

        .service-card:hover {
            background: rgba(255, 255, 255, 0.10);
            border-color: rgba(0, 212, 255, 0.25);
            box-shadow: var(--shadow-hover), 0 0 0 1px rgba(0, 212, 255, 0.2);
            transform: translateY(-4px);
        }

        .service-card .card-img {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
        }

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

        .service-card:hover .card-img img {
            transform: scale(1.05);
        }

        .service-card .card-img::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(10, 17, 40, 0.1) 0%, rgba(10, 17, 40, 0.4) 100%);
        }

        .service-card .card-body {
            padding: 22px 22px 24px;
        }

        .service-card .card-badge {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--accent-cyan);
            background: rgba(0, 212, 255, 0.1);
            border: 1px solid rgba(0, 212, 255, 0.2);
            padding: 3px 10px;
            border-radius: 100px;
            margin-bottom: 10px;
        }

        .service-card h3 {
            font-size: 18px;
            color: var(--text-primary);
            margin-bottom: 8px;
            font-weight: 700;
        }

        .service-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 16px;
        }

        .service-card .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--accent-cyan);
        }

        .service-card .card-link i {
            font-size: 12px;
            transition: transform 0.2s ease;
        }

        .service-card:hover .card-link i {
            transform: translateX(4px);
        }

        /* ===== CMS 列表 ===== */
        .latest-info {
            background: linear-gradient(180deg, var(--bg-primary) 0%, rgba(18, 34, 74, 0.3) 50%, var(--bg-primary) 100%);
        }

        .cms-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
            max-width: 1000px;
            margin: 0 auto;
        }

        .cms-item {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 14px;
            padding: 20px 24px;
            transition: var(--transition);
            display: flex;
            gap: 20px;
            align-items: center;
        }

        .cms-item:hover {
            background: rgba(255, 255, 255, 0.10);
            border-color: rgba(0, 212, 255, 0.25);
            box-shadow: var(--shadow-hover), 0 0 0 1px rgba(0, 212, 255, 0.2);
            transform: translateX(4px);
        }

        .cms-item-icon {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(0, 212, 255, 0.1);
            border: 1px solid rgba(0, 212, 255, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-size: 18px;
        }

        .cms-item-content {
            flex: 1;
        }

        .cms-item-content .item-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 6px;
        }

        .cms-item-content .item-meta .item-cat {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--accent-cyan);
            background: rgba(0, 212, 255, 0.1);
            border: 1px solid rgba(0, 212, 255, 0.2);
            padding: 2px 10px;
            border-radius: 100px;
        }

        .cms-item-content .item-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 4px;
            line-height: 1.4;
            transition: var(--transition);
        }

        .cms-item-content .item-summary {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .cms-item-content .item-link {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 14px;
            font-weight: 600;
            color: var(--accent-cyan);
        }

        .cms-empty {
            text-align: center;
            padding: 60px 20px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px dashed rgba(255, 255, 255, 0.15);
            border-radius: 16px;
            color: var(--text-muted);
            font-size: 15px;
        }

        .cms-empty i {
            font-size: 32px;
            color: var(--text-muted);
            opacity: 0.5;
            display: block;
            margin-bottom: 12px;
        }

        /* ===== 评价轮播 ===== */
        .testimonials {
            background:
                linear-gradient(180deg, rgba(10, 17, 40, 0.95) 0%, rgba(10, 17, 40, 0.8) 100%),
                url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
            overflow: hidden;
        }

        .testimonial-scroll-wrap {
            position: relative;
            max-width: 1100px;
            margin: 0 auto;
        }

        .testimonial-track {
            display: flex;
            gap: 20px;
            overflow-x: auto;
            scroll-snap-type: x mandatory;
            padding: 12px 4px 20px;
            scrollbar-width: none;
            cursor: grab;
        }

        .testimonial-track::-webkit-scrollbar {
            display: none;
        }

        .testimonial-card {
            flex: 0 0 340px;
            scroll-snap-align: start;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 16px;
            padding: 28px;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            box-shadow: var(--shadow-card);
            transition: var(--transition);
        }

        .testimonial-card:hover {
            background: rgba(255, 255, 255, 0.10);
            border-color: rgba(0, 212, 255, 0.25);
            box-shadow: var(--shadow-hover);
        }

        .testimonial-card .t-head {
            display: flex;
            align-items: center;
            gap: 14px;
            margin-bottom: 16px;
        }

        .testimonial-card .t-avatar {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: linear-gradient(135deg, rgba(0, 212, 255, 0.3), rgba(182, 255, 61, 0.2));
            border: 2px solid rgba(0, 212, 255, 0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
            flex-shrink: 0;
        }

        .testimonial-card .t-name {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
        }

        .testimonial-card .t-date {
            font-size: 12px;
            color: var(--text-muted);
        }

        .testimonial-card .t-stars {
            display: flex;
            gap: 4px;
            margin-bottom: 14px;
            color: var(--accent-lime);
            font-size: 14px;
        }

        .testimonial-card .t-text {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .t-scroll-btn {
            position: absolute;
            top: 50%;
            transform: translateY(-50%);
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: rgba(18, 34, 74, 0.8);
            border: 1px solid rgba(0, 212, 255, 0.3);
            color: var(--accent-cyan);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            z-index: 5;
            font-size: 16px;
            transition: var(--transition);
            backdrop-filter: blur(10px);
        }

        .t-scroll-btn:hover {
            background: rgba(0, 212, 255, 0.15);
            border-color: rgba(0, 212, 255, 0.5);
            box-shadow: 0 0 20px rgba(0, 212, 255, 0.2);
        }

        .t-scroll-btn.left {
            left: -24px;
        }

        .t-scroll-btn.right {
            right: -24px;
        }

        /* ===== FAQ ===== */
        .faq-section {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .faq-item {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 14px;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(0, 212, 255, 0.2);
            background: rgba(255, 255, 255, 0.08);
        }

        .faq-item summary {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 24px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            list-style: none;
            transition: var(--transition);
            min-height: 56px;
        }

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

        .faq-item summary .faq-icon {
            flex-shrink: 0;
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: rgba(0, 212, 255, 0.1);
            border: 1px solid rgba(0, 212, 255, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-size: 14px;
            transition: transform 0.3s ease;
        }

        .faq-item[open] summary .faq-icon {
            transform: rotate(45deg);
            background: rgba(0, 212, 255, 0.2);
        }

        .faq-item[open] summary {
            color: var(--accent-cyan);
        }

        .faq-item .faq-body {
            padding: 0 24px 20px;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ===== CTA ===== */
        .cta-section {
            position: relative;
            padding: 96px 0;
            text-align: center;
            background:
                radial-gradient(circle at 50% 0%, rgba(0, 212, 255, 0.1) 0%, transparent 60%),
                linear-gradient(180deg, rgba(10, 17, 40, 0.9) 0%, rgba(18, 34, 74, 0.6) 100%),
                url('/assets/images/backpic/back-3.webp') center center / cover no-repeat;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            bottom: -30%;
            left: 50%;
            transform: translateX(-50%);
            width: 600px;
            height: 400px;
            background: radial-gradient(ellipse, rgba(0, 212, 255, 0.12) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-section h2 {
            font-size: 36px;
            color: var(--text-primary);
            margin-bottom: 16px;
            font-weight: 800;
        }

        .cta-section p {
            font-size: 17px;
            color: var(--text-secondary);
            margin-bottom: 32px;
            max-width: 520px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #060B1A;
            padding: 64px 0 0;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }

        .footer-inner {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
            gap: 48px;
            padding-bottom: 48px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--text-secondary);
            margin-top: 16px;
            line-height: 1.7;
            max-width: 280px;
        }

        .footer-brand .footer-logo {
            font-size: 20px;
            font-weight: 800;
            color: var(--text-primary);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .footer-brand .footer-logo i {
            color: var(--accent-cyan);
        }

        .footer-col h3 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
            text-transform: none;
            letter-spacing: 0.3px;
        }

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

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

        .footer-col ul a {
            font-size: 14px;
            color: var(--text-secondary);
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .footer-col ul a:hover {
            color: var(--accent-cyan);
            padding-left: 4px;
        }

        .footer-col ul a i {
            font-size: 10px;
            opacity: 0.6;
        }

        .footer-contact p {
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .footer-contact i {
            color: var(--accent-cyan);
            font-size: 14px;
            width: 16px;
        }

        .footer-bottom {
            padding: 24px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
        }

        .footer-bottom p {
            font-size: 13px;
            color: var(--text-muted);
        }

        .footer-social {
            display: flex;
            gap: 10px;
        }

        .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            font-size: 15px;
            transition: var(--transition);
        }

        .footer-social a:hover {
            background: rgba(0, 212, 255, 0.1);
            border-color: rgba(0, 212, 255, 0.3);
            color: var(--accent-cyan);
            transform: translateY(-3px);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .hero-inner {
                grid-template-columns: 1fr;
                gap: 48px;
            }

            .hero h1 {
                font-size: 36px;
            }

            .hero-visual {
                max-width: 560px;
            }

            .services-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .trust-inner {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }

            .footer-inner {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }

            .nav-menu {
                margin: 0 10px;
            }

            .nav-link {
                padding: 8px 12px;
                font-size: 14px;
            }

            .nav-cta {
                padding: 8px 16px;
                font-size: 13px;
            }

            .t-scroll-btn.left {
                left: 0;
            }

            .t-scroll-btn.right {
                right: 0;
            }
        }

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
            }

            .nav-cta {
                display: none;
            }

            .nav-toggle {
                display: flex;
            }

            .mobile-menu {
                display: flex;
            }

            .section {
                padding: 64px 0;
            }

            .section-head h2 {
                font-size: 26px;
            }

            .hero {
                padding: 110px 0 60px;
                min-height: auto;
            }

            .hero h1 {
                font-size: 30px;
            }

            .hero-subtitle {
                font-size: 15px;
            }

            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }

            .btn {
                width: 100%;
            }

            .hero-trust {
                gap: 12px;
                flex-direction: column;
            }

            .services-grid {
                grid-template-columns: 1fr;
            }

            .cms-item {
                padding: 16px;
            }

            .testimonial-track {
                padding-left: 16px;
                padding-right: 16px;
            }

            .testimonial-card {
                flex-basis: 290px;
            }

            .t-scroll-btn {
                display: none;
            }

            .cta-section h2 {
                font-size: 28px;
            }

            .footer-inner {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }

            .cta-actions {
                flex-direction: column;
                align-items: stretch;
            }
        }

        @media (max-width: 480px) {
            .container {
                padding: 0 16px;
            }

            .hero h1 {
                font-size: 26px;
            }

            .hero-step-card {
                padding: 16px;
            }

            .hero-step-card .step-num {
                width: 40px;
                height: 40px;
                font-size: 14px;
            }

            .trust-inner {
                grid-template-columns: 1fr;
            }

            .trust-item {
                padding: 6px 0;
            }

            .section-head h2 {
                font-size: 22px;
            }

            .service-card .card-body {
                padding: 18px;
            }

            .faq-item summary {
                padding: 16px 18px;
                font-size: 15px;
            }

            .faq-item .faq-body {
                padding: 0 18px 16px;
                font-size: 14px;
            }

            .cms-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }

            .cms-item-icon {
                display: none;
            }

            .testimonial-card {
                flex-basis: 260px;
                padding: 20px;
            }

            .site-footer {
                padding-top: 48px;
            }
        }

        @media (max-width: 380px) {
            .hero-badge {
                font-size: 12px;
                padding: 4px 12px;
            }

            .hero-trust span {
                font-size: 13px;
            }

            .testimonial-card {
                flex-basis: 240px;
                padding: 16px;
            }
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --bg-primary: #0A1128;
            --bg-panel: #12224A;
            --bg-deep: #060B1A;
            --accent-cyan: #00D4FF;
            --accent-lime: #B6FF3D;
            --text-main: #F0F6FF;
            --text-secondary: #A0B3D9;
            --text-muted: #5C6F94;
            --border-glass: rgba(255, 255, 255, 0.12);
            --glass-bg: rgba(255, 255, 255, 0.06);
            --glass-bg-hover: rgba(255, 255, 255, 0.10);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
            --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(0, 212, 255, 0.3);
            --transition: 0.25s ease;
            --container-max: 1200px;
            --section-gap: 96px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: system-ui, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", Inter, sans-serif;
            background: var(--bg-primary);
            color: var(--text-main);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

        body::before {
            content: "";
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background:
                radial-gradient(ellipse at 20% 10%, rgba(0, 212, 255, 0.06) 0%, transparent 50%),
                radial-gradient(ellipse at 80% 30%, rgba(182, 255, 61, 0.03) 0%, transparent 40%),
                linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
            background-size: 100% 100%, 100% 100%, 48px 48px, 48px 48px;
            pointer-events: none;
            z-index: 0;
        }

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

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

        button {
            font-family: inherit;
            cursor: pointer;
        }

        input, textarea {
            font-family: inherit;
        }

        ul, ol {
            list-style: none;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
            position: relative;
            z-index: 1;
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 16px;
            font-weight: 600;
            padding: 14px 28px;
            border-radius: 10px;
            border: none;
            transition: all var(--transition);
            cursor: pointer;
            line-height: 1.4;
            white-space: nowrap;
        }

        .btn i {
            font-size: 15px;
        }

        .btn-cyan {
            background: var(--accent-cyan);
            color: var(--bg-primary);
            font-weight: 700;
            box-shadow: inset 0 0 12px rgba(255, 255, 255, 0.25), 0 4px 16px rgba(0, 212, 255, 0.25);
        }

        .btn-cyan:hover {
            background: #33DEFF;
            color: var(--bg-primary);
            box-shadow: 0 0 24px rgba(0, 212, 255, 0.4), inset 0 0 14px rgba(255, 255, 255, 0.3);
            transform: translateY(-2px);
        }

        .btn-cyan:active {
            transform: translateY(1px);
        }

        .btn-lime {
            background: var(--accent-lime);
            color: #1A2B0A;
            font-weight: 700;
            box-shadow: 0 4px 16px rgba(182, 255, 61, 0.25);
        }

        .btn-lime:hover {
            background: #C8FF66;
            color: #1A2B0A;
            box-shadow: 0 0 24px rgba(182, 255, 61, 0.4);
            transform: translateY(-2px);
        }

        .btn-lime:active {
            transform: translateY(1px);
        }

        .btn-ghost {
            background: transparent;
            border: 1px solid rgba(0, 212, 255, 0.4);
            color: var(--accent-cyan);
        }

        .btn-ghost:hover {
            background: rgba(0, 212, 255, 0.1);
            border-color: var(--accent-cyan);
            box-shadow: 0 0 16px rgba(0, 212, 255, 0.15);
            transform: translateY(-2px);
        }

        .btn-ghost:active {
            transform: translateY(1px);
        }

        .btn:focus-visible {
            outline: 2px solid var(--accent-lime);
            outline-offset: 3px;
        }

        /* ===== 徽章 / 标签 ===== */
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 600;
            background: rgba(0, 212, 255, 0.12);
            border: 1px solid rgba(0, 212, 255, 0.25);
            color: var(--accent-cyan);
        }

        .badge-lime {
            background: rgba(182, 255, 61, 0.10);
            border: 1px solid rgba(182, 255, 61, 0.25);
            color: var(--accent-lime);
        }

        .badge-muted {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            color: var(--text-secondary);
        }

        /* ===== 导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            padding: 16px 0;
            background: rgba(10, 17, 40, 0.85);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid transparent;
        }

        .site-header.scrolled {
            border-bottom-color: rgba(255, 255, 255, 0.08);
        }

        .nav-card {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            padding: 10px 20px;
            box-shadow: var(--shadow-card);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            min-height: 64px;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 700;
            color: var(--text-main);
            white-space: nowrap;
            letter-spacing: 0.3px;
        }

        .nav-logo i {
            color: var(--accent-cyan);
            font-size: 22px;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 10px 16px;
            border-radius: 9px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition);
            border: 1px solid transparent;
        }

        .nav-link i {
            font-size: 14px;
            color: var(--text-muted);
            transition: color var(--transition);
        }

        .nav-link:hover {
            color: var(--text-main);
            background: rgba(255, 255, 255, 0.06);
            border-color: rgba(255, 255, 255, 0.08);
        }

        .nav-link:hover i {
            color: var(--accent-cyan);
        }

        .nav-link.active {
            color: var(--accent-cyan);
            background: rgba(0, 212, 255, 0.10);
            border-color: rgba(0, 212, 255, 0.25);
        }

        .nav-link.active i {
            color: var(--accent-cyan);
        }

        .nav-cta {
            padding: 10px 20px;
            font-size: 14px;
            border-radius: 9px;
            margin-left: 4px;
        }

        .nav-toggle {
            display: none;
            width: 44px;
            height: 44px;
            border-radius: 10px;
            border: 1px solid var(--border-glass);
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-main);
            font-size: 20px;
            align-items: center;
            justify-content: center;
            transition: all var(--transition);
        }

        .nav-toggle:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
        }

        /* ===== 面包屑 ===== */
        .breadcrumb {
            padding: 18px 0 0;
            font-size: 13px;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }

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

        .breadcrumb i {
            font-size: 10px;
            color: var(--text-muted);
        }

        .breadcrumb .current {
            color: var(--text-secondary);
        }

        /* ===== 分类页 Hero ===== */
        .page-hero {
            position: relative;
            padding: 72px 0 72px;
            overflow: hidden;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .page-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(10, 17, 40, 0.92) 0%, rgba(10, 17, 40, 0.75) 60%, rgba(10, 17, 40, 0.95) 100%),
                        url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            z-index: 0;
        }

        .page-hero::after {
            content: "";
            position: absolute;
            top: -40%;
            right: -10%;
            width: 420px;
            height: 420px;
            background: radial-gradient(circle, rgba(0, 212, 255, 0.18) 0%, transparent 70%);
            z-index: 0;
            pointer-events: none;
        }

        .hero-inner {
            position: relative;
            z-index: 1;
            max-width: 720px;
        }

        .hero-inner .badge {
            margin-bottom: 20px;
        }

        .hero-inner h1 {
            font-size: 44px;
            font-weight: 700;
            line-height: 1.25;
            letter-spacing: 0.5px;
            margin-bottom: 16px;
        }

        .hero-inner h1 .highlight {
            color: var(--accent-cyan);
            position: relative;
        }

        .hero-inner h1 .highlight::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 4px;
            width: 100%;
            height: 8px;
            background: linear-gradient(90deg, rgba(0, 212, 255, 0.3), transparent);
            border-radius: 4px;
            z-index: -1;
        }

        .hero-inner .hero-desc {
            font-size: 17px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 28px;
        }

        .hero-stats {
            display: flex;
            gap: 28px;
            margin-top: 32px;
            flex-wrap: wrap;
        }

        .hero-stat {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .hero-stat .num {
            font-size: 22px;
            font-weight: 700;
            color: var(--text-main);
        }

        .hero-stat .label {
            font-size: 13px;
            color: var(--text-muted);
        }

        /* ===== 区块标题 ===== */
        .section {
            padding: var(--section-gap) 0;
        }

        .section-alt {
            background: rgba(255, 255, 255, 0.02);
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }

        .section-header {
            margin-bottom: 48px;
            max-width: 640px;
        }

        .section-header.center {
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }

        .section-header .badge {
            margin-bottom: 14px;
        }

        .section-header h2 {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 12px;
            letter-spacing: 0.3px;
        }

        .section-header p {
            color: var(--text-secondary);
            font-size: 16px;
            line-height: 1.7;
        }

        /* ===== 流程总览 ===== */
        .flow-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .flow-card {
            position: relative;
            background: var(--glass-bg);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            padding: 28px 22px;
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            box-shadow: var(--shadow-card);
            transition: all var(--transition);
        }

        .flow-card:hover {
            background: var(--glass-bg-hover);
            border-color: rgba(0, 212, 255, 0.25);
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }

        .flow-step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(0, 212, 255, 0.15);
            border: 1px solid rgba(0, 212, 255, 0.4);
            color: var(--accent-cyan);
            font-weight: 700;
            font-size: 16px;
            margin-bottom: 18px;
        }

        .flow-card h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 10px;
        }

        .flow-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .flow-card::after {
            content: "\f054";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            position: absolute;
            right: -18px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--accent-cyan);
            font-size: 12px;
            opacity: 0.7;
            z-index: 2;
        }

        .flow-card:last-child::after {
            display: none;
        }

        /* ===== 准备清单 ===== */
        .prep-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
        }

        .prep-card {
            background: var(--glass-bg);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            padding: 36px 32px;
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            box-shadow: var(--shadow-card);
            transition: all var(--transition);
        }

        .prep-card:hover {
            background: var(--glass-bg-hover);
            border-color: rgba(0, 212, 255, 0.2);
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }

        .prep-card .icon-box {
            width: 56px;
            height: 56px;
            border-radius: 14px;
            background: rgba(0, 212, 255, 0.13);
            border: 1px solid rgba(0, 212, 255, 0.25);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: var(--accent-cyan);
            margin-bottom: 22px;
        }

        .prep-card h3 {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 14px;
        }

        .prep-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .prep-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        .prep-list li i {
            color: var(--accent-lime);
            font-size: 13px;
            margin-top: 5px;
            flex-shrink: 0;
        }

        /* ===== 详细步骤（交替排版） ===== */
        .detail-step {
            display: grid;
            grid-template-columns: 1fr 1fr;
            align-items: center;
            gap: 56px;
            padding: 40px 0;
        }

        .detail-step:not(:last-child) {
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        .detail-step:nth-child(even) .step-img {
            order: 2;
        }

        .step-img {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            aspect-ratio: 16/10;
            box-shadow: var(--shadow-card);
        }

        .step-img::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(10, 17, 40, 0.2) 0%, transparent 50%, rgba(0, 212, 255, 0.08) 100%);
        }

        .step-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .step-img:hover img {
            transform: scale(1.04);
        }

        .step-text .step-tag {
            display: inline-block;
            padding: 5px 14px;
            background: rgba(182, 255, 61, 0.1);
            border: 1px solid rgba(182, 255, 61, 0.25);
            border-radius: 20px;
            font-size: 13px;
            font-weight: 600;
            color: var(--accent-lime);
            margin-bottom: 16px;
        }

        .step-text h3 {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 12px;
            line-height: 1.3;
        }

        .step-text p {
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.8;
            margin-bottom: 16px;
        }

        .step-points {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .step-points li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 14px;
            color: var(--text-secondary);
        }

        .step-points li i {
            color: var(--accent-cyan);
            font-size: 12px;
            margin-top: 6px;
            flex-shrink: 0;
        }

        /* ===== 安全提示 ===== */
        .safety-band {
            position: relative;
            padding: 64px 0;
            background: linear-gradient(120deg, rgba(6, 11, 26, 0.9) 0%, rgba(18, 34, 74, 0.8) 100%);
            border: 1px solid rgba(0, 212, 255, 0.1);
            border-radius: var(--radius-lg);
            overflow: hidden;
        }

        .safety-band::before {
            content: "";
            position: absolute;
            top: -30%;
            left: 20%;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(0, 212, 255, 0.12) 0%, transparent 70%);
        }

        .safety-band .inner {
            position: relative;
            z-index: 1;
            padding: 0 48px;
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .safety-band h3 {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 14px;
        }

        .safety-band p {
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.8;
        }

        .safety-tips {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .safety-tips li {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 12px 16px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 10px;
            font-size: 14px;
            color: var(--text-main);
        }

        .safety-tips li i {
            color: var(--accent-lime);
            font-size: 14px;
        }

        /* ===== FAQ ===== */
        .faq-wrap {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .faq-item {
            background: var(--glass-bg);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(0, 212, 255, 0.2);
        }

        .faq-item.open {
            border-color: rgba(0, 212, 255, 0.3);
            background: var(--glass-bg-hover);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 22px;
            background: transparent;
            border: none;
            color: var(--text-main);
            font-size: 16px;
            font-weight: 600;
            text-align: left;
            cursor: pointer;
            transition: color var(--transition);
        }

        .faq-question:hover {
            color: var(--accent-cyan);
        }

        .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(0, 212, 255, 0.1);
            border: 1px solid rgba(0, 212, 255, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-size: 12px;
            flex-shrink: 0;
            transition: transform 0.3s ease;
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
        }

        .faq-answer-inner {
            padding: 0 22px 18px;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        /* ===== CTA ===== */
        .cta-section {
            position: relative;
            padding: 80px 0;
            text-align: center;
            overflow: hidden;
        }

        .cta-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background:
                radial-gradient(ellipse at 50% 80%, rgba(0, 212, 255, 0.15) 0%, transparent 60%),
                radial-gradient(ellipse at 20% 20%, rgba(182, 255, 61, 0.05) 0%, transparent 40%);
        }

        .cta-inner {
            position: relative;
            z-index: 1;
            max-width: 640px;
            margin: 0 auto;
        }

        .cta-inner h2 {
            font-size: 34px;
            font-weight: 700;
            margin-bottom: 16px;
            line-height: 1.3;
        }

        .cta-inner p {
            color: var(--text-secondary);
            font-size: 16px;
            margin-bottom: 32px;
            line-height: 1.7;
        }

        .cta-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-deep);
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            padding: 72px 0 0;
            position: relative;
            z-index: 1;
        }

        .footer-inner {
            display: grid;
            grid-template-columns: 1.6fr 0.8fr 0.8fr 1fr;
            gap: 48px;
            padding-bottom: 48px;
        }

        .footer-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 16px;
        }

        .footer-logo i {
            color: var(--accent-cyan);
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.8;
            max-width: 360px;
        }

        .footer-col h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 10px;
        }

        .footer-col h3::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 28px;
            height: 2px;
            background: var(--accent-cyan);
            border-radius: 2px;
        }

        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-col ul a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-secondary);
            transition: all var(--transition);
        }

        .footer-col ul a i {
            font-size: 10px;
            color: var(--text-muted);
            transition: all var(--transition);
        }

        .footer-col ul a:hover {
            color: var(--accent-cyan);
            transform: translateX(4px);
        }

        .footer-col ul a:hover i {
            color: var(--accent-cyan);
        }

        .footer-contact p {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 10px;
        }

        .footer-contact p i {
            color: var(--accent-cyan);
            font-size: 14px;
            width: 20px;
            text-align: center;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 24px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            flex-wrap: wrap;
        }

        .footer-bottom p {
            font-size: 13px;
            color: var(--text-muted);
        }

        .footer-social {
            display: flex;
            gap: 10px;
        }

        .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            font-size: 15px;
            transition: all var(--transition);
        }

        .footer-social a:hover {
            color: var(--accent-cyan);
            border-color: rgba(0, 212, 255, 0.4);
            background: rgba(0, 212, 255, 0.08);
            transform: translateY(-3px);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .flow-steps {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }

            .flow-card:nth-child(2)::after {
                display: none;
            }

            .detail-step {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .detail-step:nth-child(even) .step-img {
                order: 0;
            }

            .safety-band .inner {
                grid-template-columns: 1fr;
                padding: 0 32px;
            }

            .footer-inner {
                grid-template-columns: 1fr 1fr;
                gap: 36px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --section-gap: 56px;
            }

            .nav-card {
                padding: 10px 14px;
            }

            .nav-logo {
                font-size: 16px;
            }

            .nav-logo i {
                font-size: 18px;
            }

            .nav-menu {
                position: fixed;
                top: 0;
                right: -100%;
                width: 100%;
                height: 100vh;
                background: rgba(10, 17, 40, 0.96);
                backdrop-filter: blur(24px);
                -webkit-backdrop-filter: blur(24px);
                flex-direction: column;
                align-items: center;
                justify-content: center;
                gap: 18px;
                transition: right 0.35s ease;
                z-index: 200;
            }

            .nav-menu.open {
                right: 0;
            }

            .nav-link {
                font-size: 20px;
                padding: 14px 32px;
            }

            .nav-toggle {
                display: flex;
                z-index: 210;
            }

            .nav-cta {
                display: inline-flex;
            }

            .hero-inner h1 {
                font-size: 30px;
            }

            .hero-stats {
                gap: 16px;
            }

            .section-header h2 {
                font-size: 24px;
            }

            .flow-steps {
                grid-template-columns: 1fr;
            }

            .flow-card::after {
                display: none;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }

            .nav-cta {
                display: none;
            }

            .prep-grid {
                grid-template-columns: 1fr;
            }

            .prep-card {
                padding: 28px 22px;
            }

            .detail-step {
                gap: 24px;
                padding: 28px 0;
            }

            .step-text h3 {
                font-size: 20px;
            }

            .safety-band .inner {
                padding: 0 22px;
            }

            .cta-actions .btn {
                width: 100%;
            }

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

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }

            .breadcrumb {
                font-size: 12px;
            }
        }

        @media (max-width: 480px) {
            .hero-inner h1 {
                font-size: 26px;
            }

            .hero-inner .hero-desc {
                font-size: 15px;
            }

            .btn {
                padding: 12px 22px;
                font-size: 15px;
            }

            .hero-stats {
                flex-direction: column;
                gap: 8px;
            }
        }

        /* ===== 可访问性 ===== */
        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--accent-lime);
            outline-offset: 3px;
            border-radius: 6px;
        }

        .nav-link:focus-visible {
            outline: 2px solid var(--accent-lime);
            outline-offset: 2px;
        }

        .footer-col a:focus-visible {
            outline: 2px solid rgba(182, 255, 61, 0.5);
            outline-offset: 2px;
        }

        @media (prefers-reduced-motion: reduce) {
            * {
                transition: none !important;
                animation: none !important;
            }
        }

/* roulang page: category2 */
:root {
            --bg-dark: #0A1128;
            --bg-panel: #12224A;
            --accent-cyan: #00D4FF;
            --accent-lime: #B6FF3D;
            --text-main: #F0F6FF;
            --text-muted: #A0B3D9;
            --text-dim: #5C6F94;
            --glass-bg: rgba(255, 255, 255, 0.06);
            --glass-border: rgba(255, 255, 255, 0.12);
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
            --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(0, 212, 255, 0.3);
            --container-width: 1200px;
            --space-section: 96px;
            --space-section-mobile: 56px;
            --transition-base: 0.25s ease;
            --font-main: system-ui, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-main);
            background-color: var(--bg-dark);
            background-image:
                radial-gradient(ellipse at 20% 20%, rgba(0, 212, 255, 0.06) 0%, transparent 50%),
                radial-gradient(ellipse at 80% 60%, rgba(182, 255, 61, 0.04) 0%, transparent 45%),
                linear-gradient(rgba(255, 255, 255, 0.015) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.015) 1px, transparent 1px);
            background-size: 100% 100%, 100% 100%, 44px 44px, 44px 44px;
            color: var(--text-main);
            line-height: 1.7;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            color: var(--accent-cyan);
            text-decoration: none;
            transition: color var(--transition-base), opacity var(--transition-base);
        }

        a:hover {
            color: #33DEFF;
        }

        ul,
        ol {
            list-style: none;
        }

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

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

        /* ===== Header / Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(10, 17, 40, 0.82);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            padding: 14px 0;
        }

        .nav-card {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            padding: 12px 20px;
        }

        .nav-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 700;
            color: var(--text-main);
            white-space: nowrap;
            letter-spacing: 0.3px;
        }

        .nav-logo i {
            color: var(--accent-cyan);
            font-size: 22px;
        }

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

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 9px 16px;
            border-radius: 10px;
            color: var(--text-muted);
            font-size: 15px;
            font-weight: 500;
            border: 1px solid transparent;
            transition: all var(--transition-base);
        }

        .nav-link i {
            font-size: 14px;
            opacity: 0.85;
        }

        .nav-link:hover {
            color: var(--text-main);
            background: rgba(255, 255, 255, 0.06);
            border-color: rgba(0, 212, 255, 0.25);
        }

        .nav-link.active {
            color: var(--accent-cyan);
            background: rgba(0, 212, 255, 0.08);
            border-color: rgba(0, 212, 255, 0.35);
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 22px;
            border-radius: 10px;
            font-size: 15px;
            font-weight: 700;
            background: var(--accent-lime);
            color: #0A1128;
            border: none;
            cursor: pointer;
            transition: all var(--transition-base);
            box-shadow: 0 0 18px rgba(182, 255, 61, 0.25);
        }

        .nav-cta:hover {
            background: #C7FF5A;
            color: #0A1128;
            box-shadow: 0 0 28px rgba(182, 255, 61, 0.4);
            transform: translateY(-1px);
        }

        .nav-toggle {
            display: none;
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--glass-border);
            color: var(--text-main);
            font-size: 18px;
            cursor: pointer;
            align-items: center;
            justify-content: center;
        }

        .nav-toggle:hover {
            border-color: rgba(0, 212, 255, 0.4);
            color: var(--accent-cyan);
        }

        /* ===== Hero ===== */
        .category-hero {
            position: relative;
            padding: 80px 0 72px;
            overflow: hidden;
            background-image: linear-gradient(rgba(10, 17, 40, 0.82), rgba(10, 17, 40, 0.9)), url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        .category-hero .container {
            position: relative;
            z-index: 2;
            max-width: 900px;
            text-align: center;
        }

        .category-hero h1 {
            font-size: 44px;
            font-weight: 700;
            line-height: 1.2;
            color: var(--text-main);
            margin-bottom: 20px;
            letter-spacing: 0.5px;
        }

        .category-hero h1 span {
            color: var(--accent-cyan);
        }

        .category-hero .hero-desc {
            font-size: 17px;
            color: var(--text-muted);
            max-width: 680px;
            margin: 0 auto 32px;
            line-height: 1.8;
        }

        .hero-actions {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 30px;
            border-radius: 10px;
            font-size: 16px;
            font-weight: 700;
            cursor: pointer;
            transition: all var(--transition-base);
            border: 1px solid transparent;
            text-align: center;
            min-height: 48px;
        }

        .btn-primary {
            background: var(--accent-cyan);
            color: #0A1128;
            box-shadow: 0 0 22px rgba(0, 212, 255, 0.3);
        }

        .btn-primary:hover {
            background: #33DEFF;
            color: #0A1128;
            box-shadow: 0 0 32px rgba(0, 212, 255, 0.45);
            transform: translateY(-2px);
        }

        .btn-primary:active {
            transform: translateY(0);
        }

        .btn-ghost {
            background: rgba(255, 255, 255, 0.05);
            color: var(--accent-cyan);
            border-color: rgba(0, 212, 255, 0.35);
        }

        .btn-ghost:hover {
            background: rgba(0, 212, 255, 0.1);
            color: var(--accent-cyan);
            border-color: rgba(0, 212, 255, 0.6);
        }

        .btn-lime {
            background: var(--accent-lime);
            color: #0A1128;
        }

        .btn:focus-visible,
        .nav-link:focus-visible,
        .nav-toggle:focus-visible,
        .faq-item button:focus-visible,
        .cta-section .btn:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 3px;
        }

        /* ===== Alternate Blocks ===== */
        .alternate-section {
            padding: var(--space-section) 0;
        }

        .alternate-section.alt-bg {
            background: rgba(255, 255, 255, 0.02);
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        .alternate-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 56px;
            align-items: center;
        }

        .alternate-row.flip .alternate-media {
            order: 2;
        }

        .alternate-row.flip .alternate-content {
            order: 1;
        }

        .alternate-media {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid rgba(255, 255, 255, 0.08);
            position: relative;
        }

        .alternate-media img {
            width: 100%;
            height: 100%;
            min-height: 320px;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .alternate-media:hover img {
            transform: scale(1.04);
        }

        .alternate-media::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(10, 17, 40, 0.2), transparent 50%);
            pointer-events: none;
        }

        .alternate-content {
            padding: 8px 0;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(0, 212, 255, 0.1);
            border: 1px solid rgba(0, 212, 255, 0.25);
            color: var(--accent-cyan);
            font-size: 13px;
            font-weight: 600;
            padding: 5px 14px;
            border-radius: 100px;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

        .alternate-content h2 {
            font-size: 30px;
            font-weight: 700;
            line-height: 1.25;
            color: var(--text-main);
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }

        .alternate-content p {
            color: var(--text-muted);
            font-size: 16px;
            margin-bottom: 24px;
            line-height: 1.75;
        }

        .check-list {
            display: grid;
            gap: 12px;
        }

        .check-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            color: var(--text-main);
            font-size: 15px;
            line-height: 1.6;
            padding: 12px 16px;
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-md);
            transition: all var(--transition-base);
        }

        .check-list li:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(0, 212, 255, 0.25);
            transform: translateX(4px);
        }

        .check-list li i {
            color: var(--accent-cyan);
            font-size: 15px;
            margin-top: 4px;
            flex-shrink: 0;
        }

        /* ===== Flow Steps ===== */
        .flow-section {
            padding: var(--space-section) 0;
            background: rgba(255, 255, 255, 0.02);
        }

        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }

        .section-header h2 {
            font-size: 32px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 12px;
            letter-spacing: 0.3px;
        }

        .section-header p {
            color: var(--text-muted);
            font-size: 16px;
            max-width: 620px;
            margin: 0 auto;
        }

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

        .flow-card {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            transition: all var(--transition-base);
            position: relative;
            overflow: hidden;
        }

        .flow-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--accent-cyan), transparent);
            opacity: 0;
            transition: opacity var(--transition-base);
        }

        .flow-card:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(0, 212, 255, 0.3);
            box-shadow: var(--shadow-hover);
            transform: translateY(-6px);
        }

        .flow-card:hover::before {
            opacity: 1;
        }

        .flow-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: rgba(0, 212, 255, 0.12);
            border: 1px solid rgba(0, 212, 255, 0.25);
            color: var(--accent-cyan);
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 18px;
        }

        .flow-card h3 {
            font-size: 19px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 10px;
        }

        .flow-card p {
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.7;
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: var(--space-section) 0;
        }

        .faq-list {
            max-width: 820px;
            margin: 0 auto;
            display: grid;
            gap: 14px;
        }

        .faq-item {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-base);
        }

        .faq-item:hover {
            border-color: rgba(0, 212, 255, 0.25);
        }

        .faq-item.open {
            background: rgba(255, 255, 255, 0.09);
            border-color: rgba(0, 212, 255, 0.35);
        }

        .faq-item button {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            background: none;
            border: none;
            padding: 20px 24px;
            cursor: pointer;
            color: var(--text-main);
            font-size: 16px;
            font-weight: 600;
            text-align: left;
            transition: color var(--transition-base);
        }

        .faq-item button:hover {
            color: var(--accent-cyan);
        }

        .faq-item .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: rgba(0, 212, 255, 0.1);
            border: 1px solid rgba(0, 212, 255, 0.25);
            color: var(--accent-cyan);
            font-size: 14px;
            transition: transform 0.3s ease, background 0.3s ease;
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: rgba(0, 212, 255, 0.2);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
        }

        .faq-answer-inner {
            padding: 0 24px 22px 24px;
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.75;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: var(--space-section) 0;
            background-image: linear-gradient(rgba(10, 17, 40, 0.9), rgba(10, 17, 40, 0.95)), url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 700px;
            height: 700px;
            background: radial-gradient(circle, rgba(0, 212, 255, 0.08), transparent 70%);
            pointer-events: none;
        }

        .cta-inner {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 720px;
            margin: 0 auto;
        }

        .cta-inner h2 {
            font-size: 36px;
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.25;
            margin-bottom: 16px;
        }

        .cta-inner p {
            color: var(--text-muted);
            font-size: 16px;
            margin-bottom: 32px;
            line-height: 1.8;
        }

        .cta-buttons {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        .cta-buttons .btn-lime {
            box-shadow: 0 0 26px rgba(182, 255, 61, 0.3);
        }

        .cta-buttons .btn-lime:hover {
            background: #C7FF5A;
            box-shadow: 0 0 36px rgba(182, 255, 61, 0.5);
            transform: translateY(-2px);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #060B1A;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 64px 0 0;
        }

        .footer-inner {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.4fr;
            gap: 48px;
            padding-bottom: 48px;
        }

        .footer-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 14px;
        }

        .footer-logo i {
            color: var(--accent-cyan);
            font-size: 24px;
        }

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

        .footer-brand p {
            color: var(--text-dim);
            font-size: 14px;
            line-height: 1.8;
            max-width: 320px;
        }

        .footer-col h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 18px;
        }

        .footer-col ul {
            display: grid;
            gap: 10px;
        }

        .footer-col ul a {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            color: var(--text-dim);
            font-size: 14px;
            transition: all var(--transition-base);
        }

        .footer-col ul a i {
            font-size: 11px;
            color: var(--accent-cyan);
        }

        .footer-col ul a:hover {
            color: var(--text-main);
            padding-left: 4px;
        }

        .footer-contact p {
            display: flex;
            align-items: flex-start;
            gap: 8px;
            color: var(--text-dim);
            font-size: 14px;
            margin-bottom: 10px;
        }

        .footer-contact p i {
            color: var(--accent-cyan);
            margin-top: 4px;
            font-size: 13px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 24px 0 28px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
        }

        .footer-bottom p {
            color: var(--text-dim);
            font-size: 13px;
            margin: 0;
        }

        .footer-social {
            display: flex;
            gap: 10px;
        }

        .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            color: var(--text-muted);
            font-size: 16px;
            transition: all var(--transition-base);
        }

        .footer-social a:hover {
            color: var(--accent-cyan);
            border-color: rgba(0, 212, 255, 0.4);
            background: rgba(0, 212, 255, 0.08);
            transform: translateY(-2px);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .nav-menu {
                gap: 4px;
            }

            .nav-link {
                padding: 8px 12px;
                font-size: 14px;
            }

            .nav-logo {
                font-size: 16px;
            }

            .alternate-row {
                gap: 36px;
            }

            .alternate-content h2 {
                font-size: 26px;
            }

            .flow-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 18px;
            }

            .footer-inner {
                grid-template-columns: 1fr 1fr;
                gap: 36px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --space-section: 64px;
            }

            .site-header {
                padding: 10px 0;
            }

            .nav-card {
                padding: 10px 14px;
            }

            .nav-menu {
                position: fixed;
                top: 72px;
                left: 0;
                right: 0;
                background: rgba(10, 17, 40, 0.96);
                backdrop-filter: blur(20px);
                border-bottom: 1px solid rgba(255, 255, 255, 0.08);
                flex-direction: column;
                align-items: stretch;
                padding: 20px;
                gap: 12px;
                transform: translateY(-120%);
                transition: transform 0.3s ease;
                z-index: 99;
            }

            .nav-menu.open {
                transform: translateY(0);
            }

            .nav-link {
                padding: 14px 18px;
                font-size: 16px;
                justify-content: flex-start;
            }

            .nav-cta {
                display: none;
            }

            .nav-toggle {
                display: inline-flex;
            }

            .category-hero {
                padding: 56px 0 60px;
            }

            .category-hero h1 {
                font-size: 30px;
            }

            .category-hero .hero-desc {
                font-size: 16px;
            }

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

            .alternate-row.flip .alternate-media {
                order: 0;
            }

            .alternate-row.flip .alternate-content {
                order: 0;
            }

            .alternate-media,
            .alternate-media img {
                min-height: 240px;
            }

            .alternate-content h2 {
                font-size: 24px;
            }

            .flow-grid {
                grid-template-columns: 1fr;
            }

            .section-header h2 {
                font-size: 26px;
            }

            .cta-inner h2 {
                font-size: 28px;
            }

            .footer-inner {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
                justify-content: center;
            }

            .container {
                padding: 0 16px;
            }
        }

        @media (max-width: 480px) {
            .nav-logo {
                font-size: 14px;
            }

            .nav-logo i {
                font-size: 18px;
            }

            .category-hero {
                padding: 44px 0 48px;
            }

            .category-hero h1 {
                font-size: 24px;
            }

            .hero-actions .btn {
                width: 100%;
                padding: 13px 18px;
                font-size: 15px;
            }

            .alternate-content h2 {
                font-size: 22px;
            }

            .check-list li {
                font-size: 14px;
                padding: 11px 14px;
            }

            .flow-card {
                padding: 24px 20px;
            }

            .faq-item button {
                font-size: 15px;
                padding: 18px 18px;
            }

            .faq-answer-inner {
                padding: 0 18px 18px 18px;
                font-size: 14px;
            }

            .cta-buttons .btn {
                width: 100%;
                padding: 13px 18px;
            }

            .btn-primary,
            .btn-ghost {
                padding: 13px 20px;
                font-size: 15px;
            }
        }

/* roulang page: article */
:root {
    --bg-main: #0A1128;
    --bg-panel: #12224A;
    --bg-panel-2: rgba(255, 255, 255, 0.06);
    --border-glass: rgba(255, 255, 255, 0.12);
    --cyan: #00D4FF;
    --cyan-light: #33DEFF;
    --cyan-glow: rgba(0, 212, 255, 0.4);
    --lime: #B6FF3D;
    --text-main: #F0F6FF;
    --text-sub: #A0B3D9;
    --text-weak: #5C6F94;
    --radius: 14px;
    --radius-sm: 10px;
    --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
    --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.5);
    --transition: 0.25s ease;
    --font-main: system-ui, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    background: var(--bg-main);
    color: var(--text-main);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

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

a {
    text-decoration: none;
    color: inherit;
}

button {
    font-family: inherit;
    cursor: pointer;
}

ul,
ol {
    list-style: none;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-weight: 700;
    font-size: 16px;
    line-height: 1;
    padding: 14px 28px;
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
    transition: all var(--transition);
    min-height: 48px;
    white-space: nowrap;
}
.btn i {
    font-size: 15px;
}
.btn-lime {
    background: var(--lime);
    color: var(--bg-main);
    box-shadow: inset 0 0 12px rgba(255, 255, 255, 0.25);
}
.btn-lime:hover {
    background: #d0ff6a;
    box-shadow: 0 0 24px rgba(182, 255, 61, 0.3), inset 0 0 12px rgba(255, 255, 255, 0.25);
    transform: translateY(-1px);
}
.btn-lime:active {
    transform: translateY(0) scale(0.98);
}
.btn-cyan {
    background: var(--cyan);
    color: var(--bg-main);
    box-shadow: inset 0 0 12px rgba(255, 255, 255, 0.25);
}
.btn-cyan:hover {
    background: var(--cyan-light);
    box-shadow: 0 0 24px var(--cyan-glow), inset 0 0 12px rgba(255, 255, 255, 0.25);
    transform: translateY(-1px);
}
.btn-cyan:active {
    transform: translateY(0) scale(0.98);
}
.btn-ghost {
    background: rgba(0, 212, 255, 0.08);
    border-color: rgba(0, 212, 255, 0.4);
    color: var(--cyan);
}
.btn-ghost:hover {
    background: rgba(0, 212, 255, 0.14);
    border-color: var(--cyan);
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.18);
    transform: translateY(-1px);
}
.btn:focus-visible,
a:focus-visible {
    outline: 2px solid var(--cyan);
    outline-offset: 3px;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(10, 17, 40, 0.85);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.nav-card {
    display: flex;
    align-items: center;
    gap: 20px;
    height: 72px;
}
.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 800;
    color: var(--text-main);
    letter-spacing: 0.3px;
    white-space: nowrap;
}
.nav-logo i {
    font-size: 24px;
    color: var(--cyan);
    background: rgba(0, 212, 255, 0.12);
    width: 40px;
    height: 40px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(0, 212, 255, 0.25);
}
.nav-menu {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-left: auto;
}
.nav-link {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-weight: 500;
    color: var(--text-sub);
    border: 1px solid transparent;
    transition: all var(--transition);
    min-height: 44px;
}
.nav-link i {
    font-size: 15px;
    color: var(--text-weak);
    transition: color var(--transition);
}
.nav-link:hover {
    color: var(--text-main);
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(255, 255, 255, 0.08);
}
.nav-link:hover i {
    color: var(--cyan);
}
.nav-link.active {
    color: var(--cyan);
    background: rgba(0, 212, 255, 0.08);
    border-color: rgba(0, 212, 255, 0.3);
}
.nav-link.active i {
    color: var(--cyan);
}
.nav-cta {
    margin-left: 8px;
    padding: 12px 22px;
    font-size: 15px;
}
.nav-toggle {
    display: none;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--border-glass);
    color: var(--text-main);
    font-size: 18px;
    transition: all var(--transition);
}
.nav-toggle:hover {
    border-color: var(--cyan);
    color: var(--cyan);
}

.article-banner {
    position: relative;
    padding: 72px 0 48px;
    background:
        linear-gradient(180deg, rgba(10, 17, 40, 0.88), rgba(10, 17, 40, 0.95)),
        url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    overflow: hidden;
}
.breadcrumb {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    font-size: 14px;
    color: var(--text-weak);
    margin-bottom: 28px;
}
.breadcrumb a {
    color: var(--text-sub);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: color var(--transition);
}
.breadcrumb a:hover {
    color: var(--cyan);
}
.breadcrumb .sep {
    font-size: 12px;
    color: var(--text-weak);
    opacity: 0.6;
}
.breadcrumb .breadcrumb-current {
    color: var(--text-weak);
    max-width: 320px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.article-header h1 {
    font-size: 42px;
    font-weight: 800;
    line-height: 1.25;
    margin-bottom: 20px;
    letter-spacing: 0.2px;
    max-width: 880px;
}
.article-meta {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
    font-size: 14px;
    color: var(--text-weak);
}
.article-meta-item {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}
.article-meta-item i {
    color: var(--cyan);
    font-size: 14px;
}

.article-layout {
    padding: 56px 0;
}
.article-inner {
    max-width: 860px;
    margin: 0 auto;
}
.article-content {
    font-size: 16px;
    line-height: 1.85;
    color: var(--text-sub);
    word-wrap: break-word;
}
.article-content h2 {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-main);
    margin: 44px 0 18px;
    padding-left: 16px;
    border-left: 4px solid var(--cyan);
    line-height: 1.35;
}
.article-content h3 {
    font-size: 22px;
    font-weight: 600;
    color: var(--text-main);
    margin: 32px 0 14px;
}
.article-content h4 {
    font-size: 18px;
    color: var(--text-main);
    margin: 24px 0 12px;
}
.article-content p {
    margin-bottom: 20px;
    line-height: 1.85;
    color: var(--text-sub);
}
.article-content a {
    color: var(--cyan);
    border-bottom: 1px solid rgba(0, 212, 255, 0.35);
    transition: border-color var(--transition), color var(--transition);
}
.article-content a:hover {
    color: var(--cyan-light);
    border-color: var(--cyan-light);
}
.article-content ul,
.article-content ol {
    margin: 0 0 24px;
    padding-left: 24px;
    color: var(--text-sub);
}
.article-content ul {
    list-style: disc;
}
.article-content ol {
    list-style: decimal;
}
.article-content li {
    margin-bottom: 8px;
    line-height: 1.75;
}
.article-content blockquote {
    margin: 24px 0;
    padding: 16px 22px;
    background: rgba(182, 255, 61, 0.06);
    border-left: 4px solid var(--lime);
    border-radius: 0 12px 12px 0;
    color: var(--text-main);
    font-size: 15px;
}
.article-content img {
    border-radius: var(--radius);
    margin: 24px 0;
    width: 100%;
    height: auto;
    object-fit: cover;
    box-shadow: var(--shadow-card);
}
.article-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 24px 0;
    font-size: 15px;
    background: rgba(255, 255, 255, 0.02);
    border-radius: 12px;
    overflow: hidden;
}
.article-content table th {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-main);
    padding: 14px 16px;
    text-align: left;
    font-weight: 600;
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}
.article-content table td {
    padding: 12px 16px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    color: var(--text-sub);
}
.article-content table tr:last-child td {
    border-bottom: none;
}
.article-content code {
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid rgba(0, 212, 255, 0.18);
    color: var(--cyan-light);
    padding: 2px 8px;
    border-radius: 6px;
    font-size: 14px;
    font-family: "SFMono-Regular", Consolas, monospace;
}
.article-content pre {
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid var(--border-glass);
    border-radius: 12px;
    padding: 20px;
    overflow-x: auto;
    margin: 24px 0;
}
.article-content pre code {
    background: none;
    border: none;
    color: var(--text-main);
    padding: 0;
    font-size: 14px;
}

.article-empty {
    text-align: center;
    padding: 80px 24px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px dashed var(--border-glass);
    border-radius: var(--radius);
}
.article-empty .empty-icon {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    border: 1px dashed rgba(0, 212, 255, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    color: var(--cyan);
    font-size: 28px;
    background: rgba(0, 212, 255, 0.06);
}
.article-empty h2 {
    font-size: 24px;
    margin-bottom: 12px;
}
.article-empty p {
    color: var(--text-sub);
    margin-bottom: 28px;
}

.related-posts {
    margin-top: 64px;
    padding-top: 44px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}
.related-posts h2 {
    font-size: 26px;
    font-weight: 700;
    margin-bottom: 28px;
    display: flex;
    align-items: center;
    gap: 10px;
}
.related-posts h2::before {
    content: '';
    width: 4px;
    height: 22px;
    background: var(--cyan);
    border-radius: 4px;
}
.related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.related-card {
    display: block;
    background: var(--bg-panel);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius);
    overflow: hidden;
    transition: all var(--transition);
    box-shadow: var(--shadow-card);
}
.related-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-hover), 0 0 0 1px rgba(0, 212, 255, 0.3);
}
.related-thumb {
    overflow: hidden;
    height: 140px;
}
.related-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}
.related-card:hover .related-thumb img {
    transform: scale(1.06);
}
.related-card h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-main);
    padding: 16px 16px 8px;
    line-height: 1.45;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    min-height: 48px;
}
.related-card .related-date {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--text-weak);
    padding: 0 16px 16px;
    line-height: 1;
}
.related-card .related-date i {
    font-size: 12px;
    color: var(--cyan);
}

.cta-section {
    position: relative;
    padding: 88px 0;
    text-align: center;
    background:
        linear-gradient(135deg, rgba(0, 212, 255, 0.12) 0%, rgba(10, 17, 40, 0.85) 60%),
        url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    overflow: hidden;
}
.cta-section h2 {
    font-size: 32px;
    font-weight: 800;
    margin-bottom: 16px;
}
.cta-section p {
    font-size: 16px;
    color: var(--text-sub);
    max-width: 640px;
    margin: 0 auto 32px;
    line-height: 1.8;
}
.cta-actions {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

.site-footer {
    background: #060B1A;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    padding: 72px 0 0;
}
.footer-inner {
    display: grid;
    grid-template-columns: 1.4fr 0.9fr 0.9fr 1.2fr;
    gap: 48px;
    padding-bottom: 48px;
}
.footer-brand .footer-logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 19px;
    font-weight: 800;
    color: var(--text-main);
    margin-bottom: 16px;
}
.footer-brand .footer-logo i {
    color: var(--cyan);
    font-size: 22px;
    width: 38px;
    height: 38px;
    border-radius: 10px;
    border: 1px solid rgba(0, 212, 255, 0.25);
    background: rgba(0, 212, 255, 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
}
.footer-brand p {
    font-size: 14px;
    line-height: 1.8;
    color: var(--text-weak);
    max-width: 320px;
}
.footer-col h3 {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
}
.footer-col h3::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 28px;
    height: 2px;
    background: var(--cyan);
    border-radius: 2px;
}
.footer-col ul li {
    margin-bottom: 10px;
}
.footer-col ul a {
    color: var(--text-sub);
    font-size: 14px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: color var(--transition), padding-left var(--transition);
    min-height: 32px;
}
.footer-col ul a i {
    font-size: 12px;
    color: var(--text-weak);
    transition: color var(--transition);
}
.footer-col ul a:hover {
    color: var(--cyan);
    padding-left: 4px;
}
.footer-col ul a:hover i {
    color: var(--cyan);
}
.footer-contact p {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    color: var(--text-sub);
    font-size: 14px;
    margin-bottom: 12px;
    line-height: 1.6;
}
.footer-contact p i {
    color: var(--cyan);
    margin-top: 3px;
}
.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding: 24px 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
}
.footer-bottom p {
    font-size: 13px;
    color: var(--text-weak);
}
.footer-social {
    display: flex;
    gap: 10px;
}
.footer-social a {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    border: 1px solid var(--border-glass);
    background: rgba(255, 255, 255, 0.04);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-sub);
    font-size: 16px;
    transition: all var(--transition);
}
.footer-social a:hover {
    color: var(--cyan);
    border-color: rgba(0, 212, 255, 0.35);
    background: rgba(0, 212, 255, 0.08);
    transform: translateY(-2px);
}

@media (max-width: 1024px) {
    .footer-inner {
        grid-template-columns: 1fr 1fr;
        gap: 40px;
    }
    .related-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .article-header h1 {
        font-size: 36px;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: fixed;
        top: 72px;
        left: 16px;
        right: 16px;
        background: rgba(10, 17, 40, 0.97);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        border: 1px solid var(--border-glass);
        border-radius: 16px;
        padding: 16px;
        flex-direction: column;
        align-items: stretch;
        gap: 4px;
        box-shadow: var(--shadow-hover);
        z-index: 999;
    }
    .nav-menu.open {
        display: flex;
    }
    .nav-link {
        justify-content: flex-start;
        padding: 14px 16px;
    }
    .nav-cta {
        display: none;
    }
    .nav-toggle {
        display: flex;
    }
    .nav-logo {
        font-size: 17px;
    }
    .nav-logo i {
        width: 36px;
        height: 36px;
        font-size: 20px;
    }
    .article-banner {
        padding: 48px 0 36px;
    }
    .article-header h1 {
        font-size: 30px;
    }
    .article-inner {
        max-width: 100%;
    }
    .article-content h2 {
        font-size: 24px;
    }
    .article-content h3 {
        font-size: 20px;
    }
    .cta-section {
        padding: 64px 0;
    }
    .cta-section h2 {
        font-size: 26px;
    }
    .footer-inner {
        grid-template-columns: 1fr;
        gap: 36px;
    }
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 520px) {
    .container {
        padding: 0 16px;
    }
    .related-grid {
        grid-template-columns: 1fr;
    }
    .related-thumb {
        height: 160px;
    }
    .article-meta {
        gap: 12px;
        font-size: 13px;
    }
    .cta-actions .btn {
        width: 100%;
    }
    .btn {
        font-size: 15px;
        padding: 14px 20px;
    }
    .article-banner {
        padding: 40px 0 28px;
    }
    .breadcrumb .breadcrumb-current {
        max-width: 180px;
    }
}