/* roulang page: index */
:root {
            --primary: #0088ff;
            --dark: #0a1628;
            --deep: #0f1f36;
            --deeper: #060e1a;
            --glow: #00d4ff;
            --muted: #9aa7b8;
            --text: #e8eef5;
            --cardline: rgba(255, 255, 255, 0.08);
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
            background: #0a1628;
            color: #e8eef5;
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
            font-family: inherit;
        }
        .container-x {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .glass-card {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 1.25rem;
            backdrop-filter: blur(12px);
            transition: all 0.3s ease;
        }
        .glass-card:hover {
            border-color: rgba(0, 212, 255, 0.3);
            box-shadow: 0 8px 40px rgba(0, 212, 255, 0.08);
            transform: translateY(-3px);
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, #0088ff, #00a8ff);
            color: #fff;
            padding: 12px 28px;
            border-radius: 50px;
            font-size: 15px;
            font-weight: 500;
            transition: all 0.3s ease;
            box-shadow: 0 4px 20px rgba(0, 136, 255, 0.3);
        }
        .btn-primary:hover {
            box-shadow: 0 6px 30px rgba(0, 136, 255, 0.5);
            transform: translateY(-2px);
        }
        .btn-ghost {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.06);
            color: #e8eef5;
            padding: 12px 28px;
            border-radius: 50px;
            font-size: 15px;
            border: 1px solid rgba(255, 255, 255, 0.12);
            transition: all 0.3s ease;
        }
        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: rgba(0, 212, 255, 0.4);
        }
        .section-padding {
            padding: 90px 0;
        }
        .section-title {
            font-size: 32px;
            font-weight: 600;
            letter-spacing: 0.5px;
            line-height: 1.3;
            position: relative;
        }
        .section-desc {
            color: #9aa7b8;
            font-size: 16px;
            max-width: 640px;
            line-height: 1.7;
            margin-top: 14px;
        }
        .text-glow {
            color: #00d4ff;
        }
        .badge-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);
            padding: 4px 14px;
            border-radius: 30px;
            font-size: 13px;
            color: #00d4ff;
            font-weight: 500;
        }
        .nav-link {
            position: relative;
            font-size: 14px;
            color: #9aa7b8;
            transition: color 0.3s;
        }
        .nav-link:hover {
            color: #e8eef5;
        }
        .nav-link.active {
            color: #00d4ff;
            font-weight: 500;
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -4px;
            left: 0;
            width: 100%;
            height: 2px;
            background: linear-gradient(90deg, #0088ff, #00d4ff);
            border-radius: 2px;
        }
        .search-input {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 30px;
            padding: 9px 16px 9px 38px;
            font-size: 14px;
            color: #e8eef5;
            width: 100%;
            transition: all 0.3s;
            outline: none;
        }
        .search-input::placeholder {
            color: #6b7a8a;
        }
        .search-input:focus {
            border-color: rgba(0, 212, 255, 0.4);
            box-shadow: 0 0 20px rgba(0, 212, 255, 0.1);
        }
        .faq-item {
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 16px;
            background: rgba(255, 255, 255, 0.03);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all 0.3s;
        }
        .faq-item:hover {
            border-color: rgba(0, 212, 255, 0.2);
        }
        .faq-q {
            padding: 18px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-size: 15px;
            font-weight: 500;
            color: #e8eef5;
            gap: 16px;
        }
        .faq-a {
            padding: 0 24px 18px;
            font-size: 14px;
            color: #9aa7b8;
            line-height: 1.7;
            display: none;
        }
        .faq-item.open .faq-a {
            display: block;
        }
        .faq-item.open .faq-icon {
            transform: rotate(180deg);
        }
        .faq-icon {
            transition: transform 0.3s;
            color: #00d4ff;
            flex-shrink: 0;
        }
        .hero-bg {
            background-image: url('/assets/images/backpic/back-1.jpg');
            background-size: cover;
            background-position: center;
            position: relative;
        }
        .hero-bg::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(6, 14, 26, 0.92), rgba(10, 22, 40, 0.85), rgba(0, 40, 80, 0.7));
            z-index: 1;
        }
        .hero-bg>* {
            position: relative;
            z-index: 2;
        }
        .timeline-dot {
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: linear-gradient(135deg, #0088ff, #00d4ff);
            box-shadow: 0 0 12px rgba(0, 212, 255, 0.5);
            flex-shrink: 0;
        }
        .news-item {
            padding: 14px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: all 0.3s;
        }
        .news-item:hover {
            padding-left: 8px;
            border-color: rgba(0, 212, 255, 0.3);
        }
        .news-item a {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            font-size: 14px;
            color: #c8d6e4;
        }
        .news-item a:hover {
            color: #00d4ff;
        }
        .input-field {
            width: 100%;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 12px;
            padding: 12px 16px;
            font-size: 14px;
            color: #e8eef5;
            transition: all 0.3s;
            outline: none;
        }
        .input-field:focus {
            border-color: rgba(0, 212, 255, 0.4);
            box-shadow: 0 0 20px rgba(0, 212, 255, 0.1);
        }
        .input-field::placeholder {
            color: #6b7a8a;
        }
        .footer-link {
            color: #9aa7b8;
            font-size: 14px;
            transition: color 0.3s;
            line-height: 2;
        }
        .footer-link:hover {
            color: #00d4ff;
        }
        @media (max-width: 768px) {
            .section-padding {
                padding: 60px 0;
            }
            .section-title {
                font-size: 24px;
            }
            .container-x {
                padding: 0 16px;
            }
            .hero-stats {
                flex-wrap: wrap;
            }
        }
        @media (max-width: 520px) {
            .section-title {
                font-size: 22px;
            }
            .btn-primary,
            .btn-ghost {
                padding: 10px 20px;
                font-size: 14px;
            }
        }

/* roulang page: category1 */
:root {
        --primary: #0ea5e9;
        --glow: #22d3ee;
        --dark: #060e1a;
        --darker: #040b14;
        --muted: #94a3b8;
        --radius: 16px;
        --shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    }

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

    html {
        scroll-behavior: smooth;
    }

    body {
        font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
        background-color: #060e1a;
        color: #fff;
        line-height: 1.6;
        -webkit-font-smoothing: antialiased;
    }

    img {
        max-width: 100%;
        display: block;
    }
    a {
        text-decoration: none;
        color: inherit;
    }
    button {
        cursor: pointer;
    }
    input,
    select,
    textarea {
        font-family: inherit;
    }

    .container-x {
        max-width: 1200px;
        margin-left: auto;
        margin-right: auto;
        padding-left: 1rem;
        padding-right: 1rem;
    }
    @media (min-width: 768px) {
        .container-x {
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }
    }

    /* 导航链接 */
    .nav-link {
        position: relative;
        font-size: 14px;
        font-weight: 500;
        color: rgba(255, 255, 255, 0.65);
        padding: 8px 4px;
        transition: color 0.3s ease;
        white-space: nowrap;
    }
    .nav-link:hover {
        color: #fff;
    }
    .nav-link.active {
        color: #22d3ee;
    }
    .nav-link.active::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 0;
        right: 0;
        height: 2px;
        border-radius: 2px;
        background: linear-gradient(90deg, #0ea5e9, #22d3ee);
    }

    /* 按钮 */
    .btn-primary {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        background: linear-gradient(135deg, #0ea5e9 0%, #22d3ee 100%);
        color: #fff;
        font-weight: 600;
        font-size: 14px;
        padding: 13px 30px;
        border-radius: 9999px;
        box-shadow: 0 0 20px rgba(34, 211, 238, 0.35), 0 4px 14px rgba(14, 165, 233, 0.25);
        transition: all 0.3s ease;
        border: none;
        cursor: pointer;
        line-height: 1.2;
    }
    .btn-primary:hover {
        transform: translateY(-2px);
        box-shadow: 0 0 32px rgba(34, 211, 238, 0.55), 0 8px 24px rgba(14, 165, 233, 0.35);
    }
    .btn-primary:active {
        transform: translateY(0);
        box-shadow: 0 0 16px rgba(34, 211, 238, 0.3);
    }
    .btn-primary:focus-visible {
        outline: 2px solid #22d3ee;
        outline-offset: 3px;
    }

    .btn-outline {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        background: rgba(255, 255, 255, 0.06);
        border: 1px solid rgba(255, 255, 255, 0.2);
        color: #fff;
        font-weight: 500;
        font-size: 14px;
        padding: 12px 28px;
        border-radius: 9999px;
        backdrop-filter: blur(12px);
        transition: all 0.3s ease;
        cursor: pointer;
        line-height: 1.2;
    }
    .btn-outline:hover {
        border-color: rgba(34, 211, 238, 0.6);
        background: rgba(34, 211, 238, 0.08);
        color: #22d3ee;
        transform: translateY(-2px);
    }
    .btn-outline:active {
        transform: translateY(0);
    }
    .btn-outline:focus-visible {
        outline: 2px solid rgba(34, 211, 238, 0.6);
        outline-offset: 3px;
    }

    /* 徽章 */
    .badge {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        padding: 6px 16px;
        border-radius: 9999px;
        background: rgba(34, 211, 238, 0.08);
        border: 1px solid rgba(34, 211, 238, 0.25);
        color: #22d3ee;
        font-size: 13px;
        font-weight: 500;
        backdrop-filter: blur(8px);
        line-height: 1.4;
    }

    /* 玻璃卡片 */
    .glass-card {
        background: rgba(255, 255, 255, 0.045);
        backdrop-filter: blur(16px);
        border: 1px solid rgba(255, 255, 255, 0.08);
        border-radius: var(--radius);
        box-shadow: var(--shadow);
        transition: all 0.3s ease;
    }
    .glass-card:hover {
        border-color: rgba(34, 211, 238, 0.25);
        box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3), 0 0 20px rgba(34, 211, 238, 0.06);
    }

    /* 页脚链接 */
    .footer-link {
        display: flex;
        align-items: center;
        font-size: 13px;
        color: rgba(255, 255, 255, 0.55);
        padding: 6px 0;
        transition: color 0.2s ease;
        cursor: pointer;
    }
    .footer-link:hover {
        color: #22d3ee;
    }

    /* 表单 */
    .form-input {
        width: 100%;
        padding: 12px 16px;
        border-radius: 12px;
        background: rgba(255, 255, 255, 0.05);
        border: 1px solid rgba(255, 255, 255, 0.1);
        color: #fff;
        font-size: 14px;
        transition: border-color 0.3s, box-shadow 0.3s, background 0.3s;
        outline: none;
    }
    .form-input::placeholder {
        color: rgba(255, 255, 255, 0.35);
    }
    .form-input:focus {
        border-color: rgba(34, 211, 238, 0.5);
        box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.12);
        background: rgba(255, 255, 255, 0.07);
    }
    .form-input:hover {
        border-color: rgba(255, 255, 255, 0.2);
    }

    select.form-input {
        appearance: none;
        background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8' fill='none'%3E%3Cpath d='M1 1l5 5 5-5' stroke='white' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E");
        background-repeat: no-repeat;
        background-position: right 16px center;
        padding-right: 40px;
        cursor: pointer;
    }
    select.form-input option {
        background-color: #0c1929;
        color: #fff;
    }

    textarea.form-input {
        resize: vertical;
        min-height: 90px;
    }

    /* 分区标题 */
    .section-title {
        font-size: 2rem;
        font-weight: 700;
        color: #fff;
        line-height: 1.25;
        margin-bottom: 0.75rem;
    }
    @media (max-width: 768px) {
        .section-title {
            font-size: 1.6rem;
        }
    }

    /* FAQ 动画 */
    .faq-content {
        transition: max-height 0.3s ease, opacity 0.3s ease;
        overflow: hidden;
        max-height: 0;
        opacity: 0;
    }
    .faq-content.open {
        max-height: 300px;
        opacity: 1;
    }

    /* 统计数字卡片 */
    .stat-card {
        background: rgba(255, 255, 255, 0.04);
        border: 1px solid rgba(255, 255, 255, 0.08);
        border-radius: 14px;
        padding: 18px 16px;
        transition: all 0.3s ease;
    }
    .stat-card:hover {
        border-color: rgba(34, 211, 238, 0.3);
        background: rgba(34, 211, 238, 0.04);
        transform: translateY(-3px);
    }

    /* 对比行 */
    .compare-row {
        display: grid;
        grid-template-columns: 1fr 1fr;
        border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        transition: background 0.2s;
    }
    .compare-row:hover {
        background: rgba(255, 255, 255, 0.02);
    }
    .compare-row:last-child {
        border-bottom: none;
    }

    @media (max-width: 640px) {
        .section-title {
            font-size: 1.45rem;
        }
    }