/* roulang page: index */
:root {
    --bg-primary: #0B1E3A;
    --bg-secondary: #0E2445;
    --bg-deep: #060D1D;
    --accent-blue: #2F8CFF;
    --accent-gold: #D4AF37;
    --text-primary: #FFFFFF;
    --text-secondary: #9DA9B9;
    --glass-bg: rgba(255,255,255,0.06);
    --glass-border: rgba(255,255,255,0.12);
    --radius-card: 16px;
    --radius-btn: 10px;
    --shadow-card: 0 4px 20px rgba(0,0,0,0.3);
  }
  * { box-sizing: border-box; margin: 0; padding: 0; }
  html { scroll-behavior: smooth; }
  body {
    font-family: "PingFang SC", "HarmonyOS Sans SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    font-size: 16px;
    font-feature-settings: "tnum";
    overflow-x: hidden;
  }
  a { color: inherit; text-decoration: none; }
  img { max-width: 100%; display: block; }
  button { border: none; background: none; cursor: pointer; font-family: inherit; }

  .glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-card);
  }

  .btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #2F8CFF, #1E6FD9);
    border-radius: 10px;
    padding: 0.875rem 2rem;
    font-weight: 600;
    color: #fff;
    transition: all 0.25s ease;
    box-shadow: 0 0 20px rgba(47,140,255,0.5);
    border: none;
    cursor: pointer;
  }
  .btn-primary:hover {
    filter: brightness(1.1);
    box-shadow: 0 0 30px rgba(47,140,255,0.7);
    transform: translateY(-2px);
  }
  .btn-primary:active {
    transform: scale(0.97);
    box-shadow: 0 0 10px rgba(47,140,255,0.4);
  }

  .btn-outline {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 10px;
    padding: 0.875rem 2rem;
    font-weight: 600;
    color: #fff;
    transition: all 0.25s ease;
    cursor: pointer;
  }
  .btn-outline:hover {
    border-color: var(--accent-blue);
    background: rgba(47,140,255,0.08);
  }
  .btn-outline:active {
    transform: scale(0.97);
  }

  .badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 999px;
    background: rgba(47,140,255,0.15);
    color: #7AB8FF;
    border: 1px solid rgba(47,140,255,0.25);
    font-size: 0.8125rem;
    font-weight: 500;
  }

  .gold-badge {
    background: rgba(212,175,55,0.15);
    color: #D4AF37;
    border-color: rgba(212,175,55,0.3);
  }

  /* 左侧导航 */
  .app-nav {
    position: fixed;
    left: 0;
    top: 0;
    height: 100vh;
    width: 76px;
    background: rgba(6,13,29,0.8);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-right: 1px solid rgba(255,255,255,0.08);
    z-index: 100;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 1rem 0;
    transition: width 0.3s ease;
  }
  .app-nav:hover { width: 200px; }
  .app-nav .nav-logo {
    font-size: 1.25rem;
    font-weight: 800;
    color: #fff;
    margin-bottom: 2rem;
    white-space: nowrap;
    overflow: hidden;
    width: 100%;
    text-align: center;
  }
  .app-nav .nav-logo span { color: var(--accent-gold); }
  .nav-item {
    width: 100%;
    padding: 0.75rem 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    color: #9DA9B9;
    transition: all 0.25s;
    position: relative;
    white-space: nowrap;
  }
  .nav-item .nav-icon { font-size: 1.25rem; margin-bottom: 0.25rem; }
  .nav-item .nav-text { font-size: 0.75rem; opacity: 0; transition: opacity 0.2s; }
  .app-nav:hover .nav-item .nav-text { opacity: 1; }
  .nav-item:hover, .nav-item.active { color: #fff; }
  .nav-item.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 24px;
    background: var(--accent-gold);
    border-radius: 0 3px 3px 0;
  }
  .nav-item.active .nav-icon { color: var(--accent-blue); text-shadow: 0 0 10px rgba(47,140,255,0.6); }
  .nav-user {
    margin-top: auto;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 2px solid rgba(255,255,255,0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 600;
    font-size: 0.875rem;
    transition: all 0.25s;
  }
  .nav-user:hover { border-color: var(--accent-blue); }

  .main-content {
    margin-left: 76px;
    min-height: 100vh;
  }
  /* 移动端顶部栏 */
  .mobile-topbar {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0;
    height: 56px;
    background: rgba(6,13,29,0.9);
    backdrop-filter: blur(12px);
    align-items: center;
    padding: 0 1rem;
    z-index: 99;
  }
  .mobile-logo { font-weight: 800; color: #fff; font-size: 1.1rem; }
  .mobile-logo span { color: var(--accent-gold); }
  .mobile-menu-btn { color: #fff; font-size: 1.5rem; line-height: 1; }
  .mobile-drawer {
    position: fixed;
    top: 0; left: 0;
    width: 280px;
    height: 100vh;
    background: #081528;
    z-index: 100;
    padding: 2rem;
    transform: translateX(-100%);
    transition: transform 0.3s ease;
  }
  .mobile-drawer.open { transform: translateX(0); }
  .drawer-logo { font-size: 1.25rem; font-weight: 800; margin-bottom: 2rem; color: #fff; }
  .drawer-logo span { color: var(--accent-gold); }
  .drawer-nav a {
    display: block;
    padding: 0.75rem 0;
    color: #9DA9B9;
    font-weight: 500;
    border-bottom: 1px solid rgba(255,255,255,0.06);
  }
  .drawer-nav a.active { color: #fff; }
  .drawer-nav a:hover { color: var(--accent-blue); }

  @media (max-width: 767px) {
    .app-nav { display: none; }
    .main-content { margin-left: 0; padding-top: 56px; }
    .mobile-topbar { display: flex; }
  }
  @media (min-width: 768px) and (max-width: 1279px) {
    .app-nav { width: 64px; }
    .app-nav:hover { width: 180px; }
    .main-content { margin-left: 64px; }
  }
  @media (min-width: 1280px) {
    .main-content { max-width: 1280px; margin: 0 auto; margin-left: 76px; }
  }

  /* Hero 背景 */
  .hero-bg {
    background-image: linear-gradient(180deg, rgba(5,11,24,0.4) 0%, rgba(5,11,24,0.7) 60%, #0B1E3A 100%), url('/assets/images/backpic/back-1.webp');
    background-size: cover;
    background-position: center;
    min-height: 92vh;
  }
  .grid-overlay {
    background-image: linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 24px 24px;
  }

  /* 板块间距 */
  .section { padding: 4rem 2rem; }
  .section-title {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 700;
    margin-bottom: 0.5rem;
    letter-spacing: 0.02em;
  }
  .section-sub {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    margin-bottom: 2.5rem;
  }
  .section-label {
    display: inline-block;
    color: var(--accent-gold);
    font-size: 0.8125rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    margin-bottom: 0.5rem;
  }

  /* 卡片网格 */
  .feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
  }
  .feature-card {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-card);
    padding: 1.75rem;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
  }
  .feature-card:hover { transform: translateY(-4px); box-shadow: 0 8px 32px rgba(47,140,255,0.15); }
  .feature-card .feature-icon {
    width: 48px; height: 48px;
    background: rgba(47,140,255,0.1);
    border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.5rem; margin-bottom: 1rem;
  }
  .feature-card h3 { font-size: 1.25rem; font-weight: 600; margin-bottom: 0.5rem; }
  .feature-card p { color: var(--text-secondary); font-size: 0.875rem; line-height: 1.6; }
  .feature-card a { color: var(--accent-blue); font-size: 0.875rem; font-weight: 500; display: inline-flex; align-items: center; gap: 0.25rem; margin-top: 1rem; transition: gap 0.25s; }
  .feature-card a:hover { gap: 0.5rem; }

  @media (max-width: 1024px) {
    .feature-grid { grid-template-columns: repeat(2, 1fr); }
  }
  @media (max-width: 640px) {
    .feature-grid { grid-template-columns: 1fr; }
    .section { padding: 2.5rem 1rem; }
  }

  /* 奖励横滑 */
  .reward-track {
    display: flex;
    gap: 1.25rem;
    overflow-x: auto;
    padding-bottom: 1rem;
    scrollbar-width: thin;
    scrollbar-color: var(--accent-blue) transparent;
  }
  .reward-track::-webkit-scrollbar { height: 6px; }
  .reward-track::-webkit-scrollbar-thumb { background: var(--accent-blue); border-radius: 3px; }
  .reward-card {
    min-width: 240px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-card);
    overflow: hidden;
    position: relative;
    transition: transform 0.3s, box-shadow 0.3s;
    box-shadow: var(--shadow-card);
  }
  .reward-card:hover { transform: translateY(-4px); box-shadow: 0 8px 32px rgba(47,140,255,0.15); }
  .reward-card .card-img { height: 120px; background-size: cover; background-position: center; position: relative; }
  .reward-card .card-img::after { content: ''; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 40%, rgba(11,30,58,0.8)); }
  .reward-card .reward-badge {
    position: absolute; top: 0.75rem; right: 0.75rem;
    background: var(--accent-gold);
    color: #0B1E3A;
    font-size: 0.75rem;
    font-weight: 700;
    padding: 0.25rem 0.6rem;
    border-radius: 999px;
    z-index: 2;
  }
  .reward-card .card-body { padding: 1rem; }
  .reward-card h3 { font-size: 1.125rem; font-weight: 600; margin-bottom: 0.25rem; }
  .reward-card p { color: var(--text-secondary); font-size: 0.8125rem; }

  /* 任务区 */
  .task-section {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 2rem;
    align-items: center;
  }
  .task-list { display: flex; flex-direction: column; gap: 1rem; }
  .task-item {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 1rem 1.25rem;
  }
  .task-item .task-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 0.5rem; }
  .task-item .task-name { font-weight: 600; }
  .task-item .task-status { font-size: 0.8125rem; color: var(--accent-gold); display: flex; align-items: center; gap: 0.5rem; }
  .task-item .task-status.done { color: #22C55E; }
  .progress-bar { width: 100%; height: 6px; background: rgba(255,255,255,0.08); border-radius: 3px; overflow: hidden; }
  .progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #2F8CFF, #7AB8FF);
    border-radius: 3px;
    position: relative;
    box-shadow: 0 0 8px rgba(47,140,255,0.5);
  }
  .progress-fill.full { background: linear-gradient(90deg, #D4AF37, #F0D879); box-shadow: 0 0 8px rgba(212,175,55,0.5); }
  .progress-overview {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-card);
    padding: 2rem;
    text-align: center;
  }
  .progress-percent { font-size: 3rem; font-weight: 800; color: var(--accent-gold); line-height: 1.2; }
  .progress-detail { color: var(--text-secondary); margin: 0.5rem 0 1.5rem; }
  @media (max-width: 900px) {
    .task-section { grid-template-columns: 1fr; }
  }

  /* 最新信息列表 */
  .info-list { display: flex; flex-direction: column; gap: 0.75rem; }
  .info-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 1.25rem 1.5rem;
    transition: background 0.3s, border-color 0.3s;
    gap: 1rem;
  }
  .info-item:hover { background: rgba(255,255,255,0.03); border-color: rgba(47,140,255,0.3); }
  .info-item .info-left { flex: 1; }
  .info-item .info-title { font-size: 1.0625rem; font-weight: 600; color: #fff; transition: color 0.25s; }
  .info-item:hover .info-title { color: #7AB8FF; }
  .info-item .info-excerpt { color: var(--text-secondary); font-size: 0.875rem; margin-top: 0.25rem; display: -webkit-box; -webkit-line-clamp: 1; -webkit-box-orient: vertical; overflow: hidden; }
  .info-item .info-meta { display: flex; align-items: center; gap: 0.75rem; white-space: nowrap; }
  .info-item .info-date { color: var(--text-secondary); font-size: 0.8125rem; }
  .info-item .info-link { color: var(--accent-blue); font-size: 1.25rem; transition: transform 0.25s; }
  .info-item:hover .info-link { transform: translateX(4px); }
  @media (max-width: 640px) {
    .info-item { flex-direction: column; align-items: flex-start; }
    .info-meta { width: 100%; justify-content: space-between; }
  }

  /* FAQ */
  .faq-item {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    margin-bottom: 0.75rem;
    overflow: hidden;
    transition: border-color 0.3s;
  }
  .faq-item.active { border-color: rgba(47,140,255,0.4); }
  .faq-question {
    width: 100%;
    text-align: left;
    padding: 1rem 1.25rem;
    color: #fff;
    font-weight: 600;
    font-size: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
  }
  .faq-icon { font-size: 1.25rem; color: var(--accent-blue); transition: transform 0.3s; }
  .faq-item.active .faq-icon { transform: rotate(45deg); }
  .faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    padding: 0 1.25rem;
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.7;
  }
  .faq-item.active .faq-answer { max-height: 300px; padding-bottom: 1rem; }

  /* CTA */
  .cta-banner {
    background: linear-gradient(135deg, #0B1E3A, #1E3A6E, #0B1E3A);
    border: 1px solid rgba(212,175,55,0.2);
    border-radius: var(--radius-card);
    padding: 3rem 2rem;
    text-align: center;
    position: relative;
    overflow: hidden;
  }
  .cta-banner::before {
    content: '';
    position: absolute;
    top: -50%;
    left: 50%;
    transform: translateX(-50%);
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(212,175,55,0.1) 0%, transparent 70%);
    pointer-events: none;
  }

  /* 页脚 */
  .site-footer {
    background: var(--bg-deep);
    border-top: 1px solid rgba(212,175,55,0.2);
    padding: 3rem 2rem 1.5rem;
  }
  .footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
  }
  .footer-brand .footer-logo { font-size: 1.25rem; font-weight: 800; color: #fff; }
  .footer-logo span { color: var(--accent-gold); }
  .footer-desc { color: #7C879A; font-size: 0.875rem; margin-top: 0.5rem; max-width: 320px; line-height: 1.6; }
  .footer-col h4 { color: #fff; font-size: 0.9375rem; font-weight: 600; margin-bottom: 1rem; }
  .footer-col a { display: block; color: #7C879A; font-size: 0.875rem; padding: 0.25rem 0; transition: color 0.25s; }
  .footer-col a:hover { color: var(--accent-blue); }
  .footer-bottom {
    max-width: 1200px;
    margin: 2rem auto 0;
    padding-top: 1.5rem;
    border-top: 1px solid rgba(255,255,255,0.06);
    display: flex;
    justify-content: space-between;
    color: #5A6478;
    font-size: 0.8125rem;
    flex-wrap: wrap;
    gap: 0.5rem;
  }
  @media (max-width: 768px) {
    .footer-grid { grid-template-columns: 1fr; gap: 1.5rem; }
    .footer-bottom { flex-direction: column; align-items: center; text-align: center; }
  }

  /* 其他 */
  .container { max-width: 1200px; margin: 0 auto; }
  .text-gradient {
    background: linear-gradient(90deg, #E1E8F0, #9DA9B9);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
  }
  .highlight-gold { color: var(--accent-gold); font-weight: 700; }
  .highlight-blue { color: var(--accent-blue); font-weight: 700; }
  .flex-between { display: flex; justify-content: space-between; align-items: center; }

/* roulang page: category1 */
:root {
            --bg-primary: #0B1E3A;
            --bg-secondary: #0E2445;
            --bg-deep: #060D1D;
            --bg-alt: #081528;
            --accent-blue: #2F8CFF;
            --accent-blue-dark: #1E6FD9;
            --accent-gold: #D4AF37;
            --text-primary: #FFFFFF;
            --text-secondary: #9DA9B9;
            --text-muted: #7C879A;
            --glass-bg: rgba(255, 255, 255, 0.06);
            --glass-border: rgba(255, 255, 255, 0.12);
            --success: #22C55E;
            --warning: #F59E0B;
            --danger: #EF4444;
            --radius-card: 16px;
            --radius-btn: 10px;
            --radius-pill: 999px;
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.3);
            --shadow-hover: 0 8px 32px rgba(47, 140, 255, 0.15);
            --shadow-glow: 0 0 20px rgba(47, 140, 255, 0.5);
            --shadow-gold: 0 0 16px rgba(212, 175, 55, 0.35);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "HarmonyOS Sans SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.7;
            font-size: 16px;
            min-height: 100vh;
            overflow-x: hidden;
        }

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

        a {
            text-decoration: none;
            color: inherit;
            transition: all .25s ease;
        }

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

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== App Shell Nav ========== */
        .app-nav {
            position: fixed;
            left: 0;
            top: 0;
            bottom: 0;
            width: 76px;
            background: rgba(6, 13, 29, 0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-right: 1px solid rgba(255, 255, 255, 0.08);
            display: flex;
            flex-direction: column;
            align-items: center;
            z-index: 100;
            padding-top: 24px;
            padding-bottom: 24px;
        }

        .nav-logo {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 4px;
            margin-bottom: 36px;
        }

        .nav-logo-icon {
            width: 44px;
            height: 44px;
            border-radius: 14px;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-blue-dark));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            box-shadow: 0 0 20px rgba(47, 140, 255, 0.35);
        }

        .nav-logo-text {
            font-size: 9px;
            line-height: 1.2;
            text-align: center;
            color: var(--text-secondary);
            letter-spacing: 0.5px;
        }

        .drawer-nav {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 12px;
            flex: 1;
            width: 100%;
        }

        .drawer-nav .nav-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 4px;
            width: 64px;
            padding: 10px 0;
            border-radius: 12px;
            position: relative;
            transition: all .25s ease;
        }

        .drawer-nav .nav-item .nav-icon {
            font-size: 18px;
            line-height: 1;
        }

        .drawer-nav .nav-item .nav-text {
            font-size: 9.5px;
            line-height: 1.25;
            text-align: center;
            color: var(--text-secondary);
        }

        .drawer-nav .nav-item:hover {
            background: rgba(47, 140, 255, 0.1);
        }

        .drawer-nav .nav-item:hover .nav-text {
            color: var(--text-primary);
        }

        .drawer-nav .nav-item.active {
            background: rgba(47, 140, 255, 0.1);
        }

        .drawer-nav .nav-item.active .nav-icon {
            filter: drop-shadow(0 0 8px rgba(47, 140, 255, 0.7));
        }

        .drawer-nav .nav-item.active .nav-text {
            color: #fff;
            font-weight: 600;
        }

        .drawer-nav .nav-item.active::before {
            content: '';
            position: absolute;
            left: -6px;
            top: 50%;
            transform: translateY(-50%);
            width: 3px;
            height: 24px;
            border-radius: 0 4px 4px 0;
            background: var(--accent-gold);
            box-shadow: var(--shadow-gold);
        }

        .nav-user {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            border: 2px solid rgba(255, 255, 255, 0.25);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            background: rgba(47, 140, 255, 0.2);
        }

        /* ========== Main Wrapper ========== */
        .main-wrapper {
            margin-left: 76px;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        .content-area {
            flex: 1;
        }

        /* ========== Mobile Header ========== */
        .mobile-header {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 56px;
            background: rgba(6, 13, 29, 0.9);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            z-index: 100;
            align-items: center;
            justify-content: space-between;
            padding: 0 20px;
        }

        .mobile-logo {
            font-size: 16px;
            font-weight: 800;
            color: #fff;
        }

        .mobile-logo span {
            color: var(--accent-gold);
            font-size: 13px;
            font-weight: 600;
        }

        .mobile-toggle {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            transition: background .25s;
        }

        .mobile-toggle:hover {
            background: rgba(47, 140, 255, 0.2);
        }

        /* ========== Drawer ========== */
        .drawer-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0, 0, 0, 0.5);
            z-index: 200;
        }

        .drawer-overlay.open {
            display: block;
        }

        .drawer {
            display: none;
        }

        /* ========== Page Hero ========== */
        .page-hero {
            position: relative;
            min-height: 320px;
            display: flex;
            align-items: center;
            overflow: hidden;
            background: var(--bg-deep);
        }

        .page-hero-bg {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center;
            background-image: url('/assets/images/backpic/back-1.webp');
        }

        .page-hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(5, 11, 24, 0.45) 0%, rgba(5, 11, 24, 0.72) 60%, var(--bg-primary) 100%);
        }

        .page-hero-content {
            position: relative;
            z-index: 2;
            padding: 80px 0 60px;
        }

        .page-hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            border-radius: var(--radius-pill);
            background: rgba(212, 175, 55, 0.15);
            border: 1px solid rgba(212, 175, 55, 0.3);
            color: var(--accent-gold);
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 18px;
        }

        .page-hero h1 {
            font-size: clamp(2rem, 4.5vw, 3rem);
            font-weight: 800;
            letter-spacing: 0.01em;
            line-height: 1.2;
            margin-bottom: 16px;
        }

        .page-hero h1 .highlight {
            color: var(--accent-gold);
            font-weight: 800;
        }

        .page-hero p {
            font-size: 1.05rem;
            line-height: 1.7;
            color: rgba(225, 232, 240, 0.9);
            max-width: 620px;
        }

        /* ========== Section Common ========== */
        .section {
            padding: 72px 0;
        }

        .section-alt {
            background: var(--bg-secondary);
        }

        .section-deep {
            background: var(--bg-alt);
        }

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

        .section-header .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 3px;
            color: var(--accent-blue);
            text-transform: uppercase;
            margin-bottom: 8px;
        }

        .section-header h2 {
            font-size: clamp(1.6rem, 3vw, 2.1rem);
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 12px;
        }

        .section-header p {
            color: var(--text-secondary);
            max-width: 640px;
            margin: 0 auto;
            font-size: 15px;
        }

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

        .step-card {
            position: relative;
            padding: 32px 24px;
            border-radius: var(--radius-card);
            background: var(--glass-bg);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--glass-border);
            box-shadow: var(--shadow-card);
            transition: all .3s ease;
            overflow: hidden;
        }

        .step-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(47, 140, 255, 0.3);
        }

        .step-number {
            position: absolute;
            top: 16px;
            right: 20px;
            font-size: 52px;
            font-weight: 800;
            line-height: 1;
            color: rgba(255, 255, 255, 0.06);
            font-feature-settings: "tnum";
        }

        .step-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 18px;
            background: linear-gradient(135deg, rgba(47, 140, 255, 0.2), rgba(47, 140, 255, 0.05));
            border: 1px solid rgba(47, 140, 255, 0.25);
            color: var(--accent-blue);
        }

        .step-card h3 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .step-card p {
            font-size: 13.5px;
            color: var(--text-secondary);
            line-height: 1.65;
        }

        /* ========== Split Section ========== */
        .split-layout {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 32px;
            align-items: start;
        }

        .glass-card {
            background: var(--glass-bg);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 32px;
        }

        .content-card h2 {
            font-size: 1.4rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: #fff;
        }

        .content-card h3 {
            font-size: 1.1rem;
            font-weight: 600;
            margin-top: 28px;
            margin-bottom: 12px;
            color: #fff;
        }

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

        .check-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .check-list li {
            position: relative;
            padding-left: 30px;
            padding-top: 8px;
            padding-bottom: 8px;
            font-size: 14.5px;
            color: var(--text-secondary);
            line-height: 1.65;
        }

        .check-list li::before {
            content: '\f00c';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            position: absolute;
            left: 0;
            top: 10px;
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background: rgba(34, 197, 94, 0.15);
            color: var(--success);
            font-size: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .side-card {
            background: var(--glass-bg);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 24px;
            margin-bottom: 24px;
        }

        .side-card h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .side-card h4 i {
            color: var(--accent-blue);
        }

        .side-card .side-img {
            border-radius: 12px;
            overflow: hidden;
            margin-bottom: 14px;
        }

        .side-card .side-img img {
            width: 100%;
            height: 140px;
            object-fit: cover;
        }

        .side-link-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .side-link-list li {
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .side-link-list li:last-child {
            border-bottom: none;
        }

        .side-link-list a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 12px 0;
            font-size: 14px;
            color: var(--text-secondary);
            transition: all .25s;
        }

        .side-link-list a:hover {
            color: var(--accent-blue);
            padding-left: 6px;
        }

        .side-link-list a i {
            color: var(--accent-gold);
            font-size: 13px;
        }

        .side-note {
            padding: 16px;
            border-radius: 12px;
            background: rgba(212, 175, 55, 0.08);
            border: 1px solid rgba(212, 175, 55, 0.15);
            font-size: 13.5px;
            color: rgba(225, 232, 240, 0.8);
            line-height: 1.7;
        }

        .side-note strong {
            color: var(--accent-gold);
        }

        /* ========== Login Methods ========== */
        .methods-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .method-card {
            border-radius: var(--radius-card);
            overflow: hidden;
            background: var(--bg-deep);
            border: 1px solid var(--glass-border);
            box-shadow: var(--shadow-card);
            transition: all .3s ease;
        }

        .method-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(47, 140, 255, 0.3);
        }

        .method-card-img {
            height: 160px;
            overflow: hidden;
            position: relative;
        }

        .method-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .method-card-img::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 40%, rgba(6, 13, 29, 0.7));
        }

        .method-card-body {
            padding: 24px;
        }

        .method-card-body h3 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .method-card-body h3 i {
            color: var(--accent-blue);
        }

        .method-card-body p {
            font-size: 13.5px;
            color: var(--text-secondary);
            line-height: 1.65;
            margin-bottom: 12px;
        }

        .method-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 12px;
            color: var(--accent-blue);
            background: rgba(47, 140, 255, 0.12);
            border-radius: var(--radius-pill);
            padding: 4px 12px;
            border: 1px solid rgba(47, 140, 255, 0.2);
        }

        /* ========== Security Features ========== */
        .security-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .security-card {
            padding: 28px 24px;
            border-radius: var(--radius-card);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--glass-border);
            transition: all .3s ease;
            position: relative;
            overflow: hidden;
        }

        .security-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--accent-blue), var(--accent-gold));
            opacity: 0.6;
            transition: opacity .3s;
        }

        .security-card:hover {
            background: rgba(47, 140, 255, 0.06);
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }

        .security-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin-bottom: 16px;
            background: rgba(47, 140, 255, 0.12);
            color: var(--accent-blue);
        }

        .security-card h3 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .security-card p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
        }

        .faq-item {
            margin-bottom: 14px;
            border-radius: var(--radius-card);
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            overflow: hidden;
            transition: border-color .3s;
        }

        .faq-item:hover {
            border-color: rgba(47, 140, 255, 0.2);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            cursor: pointer;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            transition: color .25s;
            user-select: none;
        }

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

        .faq-icon {
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: rgba(47, 140, 255, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: var(--accent-blue);
            transition: transform .3s ease;
            flex-shrink: 0;
            margin-left: 16px;
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: rgba(212, 175, 55, 0.15);
            color: var(--accent-gold);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .35s ease;
        }

        .faq-answer-inner {
            padding: 0 24px 20px;
            font-size: 14.5px;
            color: var(--text-secondary);
            line-height: 1.75;
        }

        .faq-item.open .faq-answer {
            max-height: 400px;
        }

        /* ========== CTA ========== */
        .cta-section {
            position: relative;
            padding: 72px 0;
            overflow: hidden;
            background: linear-gradient(135deg, rgba(5, 11, 24, 0.4), rgba(6, 13, 29, 0.7)), radial-gradient(ellipse at 30% 40%, rgba(47, 140, 255, 0.25), transparent 60%);
            border-top: 1px solid rgba(212, 175, 55, 0.2);
            border-bottom: 1px solid rgba(212, 175, 55, 0.2);
        }

        .cta-inner {
            text-align: center;
            max-width: 680px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .cta-inner h2 {
            font-size: clamp(1.6rem, 3.2vw, 2.2rem);
            font-weight: 800;
            margin-bottom: 12px;
        }

        .cta-inner p {
            color: var(--text-secondary);
            font-size: 15px;
            margin-bottom: 28px;
        }

        .btn-group {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: var(--radius-btn);
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-blue-dark));
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            box-shadow: var(--shadow-glow);
            transition: all .25s ease;
            border: none;
        }

        .btn-primary:hover {
            filter: brightness(1.1);
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(47, 140, 255, 0.4);
        }

        .btn-primary:active {
            transform: scale(0.97);
            box-shadow: 0 2px 12px rgba(47, 140, 255, 0.3);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: var(--radius-btn);
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            transition: all .25s ease;
        }

        .btn-outline:hover {
            border-color: var(--accent-blue);
            background: rgba(47, 140, 255, 0.08);
            transform: translateY(-2px);
        }

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

        /* ========== Footer ========== */
        .site-footer {
            background: var(--bg-deep);
            border-top: 1px solid rgba(212, 175, 55, 0.2);
            padding: 56px 0 24px;
            margin-left: 76px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px 40px;
        }

        .footer-logo {
            font-size: 18px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
        }

        .footer-logo span {
            color: var(--accent-gold);
            font-weight: 700;
        }

        .footer-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 320px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-col a {
            display: block;
            font-size: 14px;
            color: var(--text-muted);
            padding: 5px 0;
            transition: color .25s;
        }

        .footer-col a:hover {
            color: var(--accent-blue);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            max-width: 1280px;
            margin: 0 auto;
            padding: 20px 24px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
        }

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

        /* ========== Responsive ========== */
        @media (max-width: 1279px) {
            .app-nav {
                width: 64px;
            }

            .drawer-nav .nav-item {
                width: 56px;
            }

            .main-wrapper {
                margin-left: 64px;
            }

            .site-footer {
                margin-left: 64px;
            }
        }

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

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

            .methods-grid {
                grid-template-columns: repeat(3, 1fr);
            }

            .split-layout {
                grid-template-columns: 1fr;
            }

            .side-layout {
                display: grid;
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
        }

        @media (max-width: 767px) {
            .app-nav {
                display: none;
            }

            .mobile-header {
                display: flex;
            }

            .main-wrapper {
                margin-left: 0;
                padding-top: 56px;
            }

            .site-footer {
                margin-left: 0;
            }

            .drawer {
                display: flex;
                flex-direction: column;
                position: fixed;
                top: 0;
                left: 0;
                bottom: 0;
                width: 280px;
                background: rgba(6, 13, 29, 0.98);
                backdrop-filter: blur(16px);
                -webkit-backdrop-filter: blur(16px);
                z-index: 300;
                transform: translateX(-100%);
                transition: transform .3s ease;
                padding: 24px 0;
            }

            .drawer.open {
                transform: translateX(0);
            }

            .drawer .drawer-nav {
                align-items: flex-start;
                padding: 0 24px;
            }

            .drawer .drawer-nav .nav-item {
                flex-direction: row;
                justify-content: flex-start;
                width: 100%;
                padding: 12px 14px;
                gap: 14px;
                border-radius: 10px;
            }

            .drawer .drawer-nav .nav-item .nav-text {
                font-size: 14px;
                text-align: left;
            }

            .drawer .drawer-nav .nav-item.active::before {
                left: -24px;
                right: auto;
            }

            .page-hero {
                min-height: 240px;
            }

            .page-hero-content {
                padding: 56px 0 40px;
            }

            .page-hero h1 {
                font-size: clamp(1.7rem, 5vw, 2.2rem);
            }

            .section {
                padding: 48px 0;
            }

            .steps-grid,
            .methods-grid,
            .security-grid {
                grid-template-columns: 1fr;
            }

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

            .split-layout {
                grid-template-columns: 1fr;
            }

            .side-layout {
                grid-template-columns: 1fr;
            }

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

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

            .btn-primary,
            .btn-outline {
                width: 100%;
                justify-content: center;
            }

            .container {
                padding: 0 16px;
            }

            .page-hero-content .container {
                padding: 0 24px;
            }
        }

        @media (max-width: 520px) {
            .page-hero {
                min-height: 220px;
            }

            .page-hero h1 {
                font-size: 1.6rem;
            }

            .page-hero p {
                font-size: 14px;
            }

            .section-header h2 {
                font-size: 1.4rem;
            }

            .glass-card {
                padding: 20px;
            }

            .step-card {
                padding: 24px 18px;
            }
        }

/* roulang page: article */
:root {
  --bg-primary: #0B1E3A;
  --bg-secondary: #0E2445;
  --bg-deep: #060D1D;
  --accent-blue: #2F8CFF;
  --accent-gold: #D4AF37;
  --text-primary: #FFFFFF;
  --text-secondary: #9DA9B9;
  --glass-bg: rgba(255,255,255,0.06);
  --glass-border: rgba(255,255,255,0.12);
  --radius-card: 16px;
  --radius-btn: 10px;
  --shadow-card: 0 4px 20px rgba(0,0,0,0.3);
  --shadow-hover: 0 8px 32px rgba(47,140,255,0.15);
  --shadow-glow: 0 0 20px rgba(47,140,255,0.5);
  --shadow-gold: 0 0 16px rgba(212,175,55,0.35);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: "PingFang SC", "HarmonyOS Sans SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }
button { border: none; background: none; cursor: pointer; font-family: inherit; }
ul, ol { list-style: none; }
input, textarea { font-family: inherit; }

/* ===== 左侧导航 ===== */
.app-sidebar {
  position: fixed;
  top: 0; left: 0;
  width: 76px;
  height: 100vh;
  background: rgba(6,13,29,0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-right: 1px solid rgba(255,255,255,0.08);
  z-index: 100;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 20px 0;
  transition: transform 0.3s ease;
}
.sidebar-logo {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-bottom: 30px;
}
.logo-mark {
  width: 40px; height: 40px;
  border-radius: 12px;
  background: linear-gradient(135deg, #2F8CFF, #1E6FD9);
  display: flex; align-items: center; justify-content: center;
  font-size: 18px; font-weight: 800; color: #fff;
  box-shadow: 0 0 18px rgba(47,140,255,0.4);
}
.logo-text {
  font-size: 10px;
  font-weight: 600;
  color: #fff;
  margin-top: 6px;
  letter-spacing: 0.02em;
  white-space: nowrap;
}
.drawer-nav {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
  gap: 8px;
}
.nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 58px;
  border-radius: 12px;
  color: #8A97A8;
  font-size: 10px;
  font-weight: 500;
  transition: all 0.25s ease;
  position: relative;
}
.nav-item i { font-size: 18px; margin-bottom: 4px; transition: all 0.25s ease; }
.nav-item span { line-height: 1.2; white-space: nowrap; }
.nav-item:hover {
  color: #fff;
  background: rgba(47,140,255,0.1);
}
.nav-item:hover i { color: #2F8CFF; text-shadow: 0 0 12px rgba(47,140,255,0.6); }
.nav-item.active {
  color: #fff;
  background: rgba(47,140,255,0.12);
}
.nav-item.active::before {
  content: '';
  position: absolute;
  left: -6px; top: 50%;
  transform: translateY(-50%);
  width: 3px; height: 22px;
  border-radius: 3px;
  background: var(--accent-gold);
  box-shadow: 0 0 10px rgba(212,175,55,0.5);
}
.nav-item.active i { color: #2F8CFF; text-shadow: 0 0 12px rgba(47,140,255,0.6); }
.sidebar-avatar {
  width: 40px; height: 40px;
  border-radius: 50%;
  border: 2px solid rgba(255,255,255,0.25);
  display: flex; align-items: center; justify-content: center;
  font-size: 16px; font-weight: 700; color: #fff;
  background: rgba(47,140,255,0.15);
  margin-top: 20px;
}

/* ===== 移动端顶部栏 ===== */
.mobile-header {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 58px;
  background: rgba(6,13,29,0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  z-index: 99;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
}
.mobile-logo {
  font-size: 18px;
  font-weight: 800;
  color: #fff;
}
.mobile-logo span {
  color: var(--accent-blue);
  font-weight: 600;
  font-size: 14px;
}
.menu-toggle {
  width: 40px; height: 40px;
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  color: #fff;
  background: rgba(255,255,255,0.06);
  font-size: 18px;
  transition: all 0.25s ease;
}
.menu-toggle:hover { background: rgba(47,140,255,0.2); }
.drawer-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 98;
  backdrop-filter: blur(4px);
}
.drawer-overlay.active { display: block; }

/* ===== 主内容 ===== */
.main-content {
  margin-left: 76px;
  min-height: 100vh;
}

/* ===== 文章 Hero ===== */
.article-hero {
  position: relative;
  padding: 80px 40px 60px;
  background: linear-gradient(135deg, rgba(6,13,29,0.92) 0%, rgba(11,30,58,0.85) 60%, rgba(14,36,69,0.7) 100%),
    url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.article-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 85% 20%, rgba(47,140,255,0.15), transparent 60%);
  pointer-events: none;
}
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 24px;
  position: relative;
  z-index: 1;
}
.breadcrumb a {
  color: var(--text-secondary);
  transition: color 0.25s ease;
}
.breadcrumb a:hover { color: var(--accent-blue); }
.breadcrumb .sep { color: rgba(255,255,255,0.25); }
.breadcrumb .current {
  color: var(--accent-gold);
  max-width: 320px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.article-title-wrap {
  max-width: 860px;
  position: relative;
  z-index: 1;
}
.article-title {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 800;
  line-height: 1.4;
  letter-spacing: 0.02em;
  color: #fff;
  margin-bottom: 20px;
}
.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 20px;
  font-size: 14px;
  color: var(--text-secondary);
}
.meta-item {
  display: flex;
  align-items: center;
  gap: 6px;
}
.meta-item i { color: var(--accent-blue); font-size: 13px; }
.official-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 12px;
  border-radius: 999px;
  background: rgba(47,140,255,0.15);
  border: 1px solid rgba(47,140,255,0.25);
  color: #7AB8FF;
  font-size: 13px;
  font-weight: 500;
}
.official-badge i { font-size: 12px; }

/* ===== 文章正文区 ===== */
.article-section {
  padding: 60px 40px;
  background: var(--bg-primary);
  position: relative;
}
.article-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 100% 80px;
  pointer-events: none;
}
.article-container {
  max-width: 860px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}
.article-content {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius-card);
  padding: 48px 56px;
  box-shadow: var(--shadow-card);
}
.article-content h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 2.5rem 0 1rem;
  color: var(--text-primary);
  padding-left: 0.875rem;
  border-left: 3px solid var(--accent-blue);
  line-height: 1.4;
}
.article-content h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin: 2rem 0 0.875rem;
  color: var(--text-primary);
}
.article-content p {
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: 1.25rem;
  color: #C9D3E0;
}
.article-content a {
  color: var(--accent-blue);
  border-bottom: 1px solid rgba(47,140,255,0.3);
  transition: all 0.25s ease;
}
.article-content a:hover {
  color: #7AB8FF;
  border-bottom-color: #7AB8FF;
}
.article-content blockquote {
  margin: 1.5rem 0;
  padding: 16px 20px;
  border-left: 3px solid var(--accent-gold);
  background: rgba(212,175,55,0.08);
  border-radius: 0 10px 10px 0;
  color: #E8DCA8;
  font-style: italic;
  line-height: 1.7;
}
.article-content ul,
.article-content ol {
  margin: 1.25rem 0;
  padding-left: 1.5rem;
}
.article-content ul li {
  list-style: disc;
  margin-bottom: 0.5rem;
  color: #C9D3E0;
}
.article-content ol li {
  list-style: decimal;
  margin-bottom: 0.5rem;
  color: #C9D3E0;
}
.article-content img {
  border-radius: 12px;
  margin: 1.5rem 0;
  border: 1px solid rgba(255,255,255,0.08);
  box-shadow: 0 4px 20px rgba(0,0,0,0.3);
}
.article-content code {
  background: rgba(47,140,255,0.12);
  border-radius: 6px;
  padding: 2px 8px;
  font-size: 0.875rem;
  color: #7AB8FF;
}
.article-content pre {
  background: #0A1428;
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 12px;
  padding: 20px;
  overflow-x: auto;
  margin: 1.5rem 0;
}
.article-content pre code {
  background: none;
  padding: 0;
  color: #D1E4FF;
}
.article-not-found {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius-card);
  padding: 80px 40px;
  text-align: center;
  box-shadow: var(--shadow-card);
}
.article-not-found i {
  font-size: 48px;
  color: var(--accent-gold);
  margin-bottom: 16px;
  display: block;
}
.article-not-found h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
}
.article-not-found p {
  color: var(--text-secondary);
  margin-bottom: 24px;
}

/* ===== 文章底部导航 ===== */
.article-footer-bar {
  margin-top: 32px;
  display: grid;
  gap: 24px;
}
.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 999px;
  background: rgba(47,140,255,0.12);
  border: 1px solid rgba(47,140,255,0.2);
  color: #7AB8FF;
  font-size: 13px;
  font-weight: 500;
  transition: all 0.25s ease;
}
.tag:hover {
  background: rgba(47,140,255,0.22);
  border-color: rgba(47,140,255,0.4);
}
.prev-next {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.prev-next a {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 20px;
  border-radius: 14px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  transition: all 0.25s ease;
}
.prev-next a:hover {
  background: rgba(47,140,255,0.08);
  border-color: rgba(47,140,255,0.25);
  transform: translateY(-2px);
}
.prev-next a.next-link { text-align: right; }
.prev-next .label {
  font-size: 12px;
  color: var(--text-secondary);
}
.prev-next .title {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
}

/* ===== 相关阅读 ===== */
.related-section {
  padding: 60px 40px;
  background: var(--bg-secondary);
  position: relative;
}
.section-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 32px;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
}
.section-title {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.02em;
}
.section-subtitle {
  font-size: 13px;
  color: var(--accent-blue);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  font-weight: 600;
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  max-width: 1200px;
  margin: 0 auto;
}
.related-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-card);
  overflow: hidden;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--shadow-card);
  transition: all 0.3s ease;
  display: block;
}
.related-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(47,140,255,0.3);
}
.related-card .card-img {
  height: 160px;
  overflow: hidden;
  position: relative;
}
.related-card .card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.related-card:hover .card-img img { transform: scale(1.05); }
.related-card .card-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(6,13,29,0.7));
}
.related-card .card-body {
  padding: 20px;
}
.related-card .card-title {
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 8px;
  line-height: 1.4;
  transition: color 0.25s ease;
}
.related-card:hover .card-title { color: #7AB8FF; }
.related-card .card-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 14px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.related-card .card-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: #7C879A;
}
.related-card .card-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--accent-blue);
  font-weight: 500;
  transition: all 0.25s ease;
}
.related-card .card-link i { font-size: 12px; transition: transform 0.25s ease; }
.related-card:hover .card-link i { transform: translateX(4px); }

/* ===== CTA 横幅 ===== */
.cta-section {
  padding: 80px 40px;
  background: linear-gradient(135deg, #0B1E3A 0%, #0A1428 50%, #0B1E3A 100%);
  position: relative;
  overflow: hidden;
  text-align: center;
}
.cta-section::before {
  content: '';
  position: absolute;
  top: -50%;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 400px;
  background: radial-gradient(circle, rgba(47,140,255,0.2), transparent 70%);
  pointer-events: none;
}
.cta-section::after {
  content: '';
  position: absolute;
  bottom: -100px;
  right: -100px;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(212,175,55,0.12), transparent 70%);
  pointer-events: none;
}
.cta-title {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 800;
  color: #fff;
  margin-bottom: 16px;
  position: relative;
  z-index: 1;
}
.cta-title .gold {
  color: var(--accent-gold);
  text-shadow: var(--shadow-gold);
}
.cta-desc {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 32px;
  position: relative;
  z-index: 1;
}
.cta-btn-group {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 0.875rem 2rem;
  border-radius: var(--radius-btn);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: all 0.25s ease;
  cursor: pointer;
  border: none;
}
.btn-primary {
  background: linear-gradient(135deg, #2F8CFF, #1E6FD9);
  color: #fff;
  box-shadow: 0 4px 20px rgba(47,140,255,0.35);
}
.btn-primary:hover {
  filter: brightness(1.1);
  transform: translateY(-2px);
  box-shadow: 0 6px 30px rgba(47,140,255,0.5);
}
.btn-primary:active {
  transform: scale(0.97);
}
.btn-outline {
  background: transparent;
  border: 1px solid rgba(255,255,255,0.2);
  color: #fff;
}
.btn-outline:hover {
  border-color: var(--accent-blue);
  background: rgba(47,140,255,0.08);
  transform: translateY(-2px);
}
.btn-gold {
  background: linear-gradient(135deg, #D4AF37, #B8962E);
  color: #0A1428;
  box-shadow: 0 4px 20px rgba(212,175,55,0.3);
}
.btn-gold:hover {
  filter: brightness(1.1);
  transform: translateY(-2px);
  box-shadow: 0 6px 30px rgba(212,175,55,0.45);
}

/* ===== FAQ ===== */
.faq-section {
  padding: 60px 40px;
  background: var(--bg-deep);
}
.faq-container {
  max-width: 860px;
  margin: 0 auto;
}
.faq-item {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 14px;
  margin-bottom: 14px;
  overflow: hidden;
  transition: all 0.3s ease;
}
.faq-item:hover {
  border-color: rgba(47,140,255,0.2);
  background: rgba(255,255,255,0.06);
}
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  cursor: pointer;
  user-select: none;
}
.faq-question .faq-icon {
  width: 28px; height: 28px;
  border-radius: 50%;
  background: rgba(47,140,255,0.12);
  display: flex; align-items: center; justify-content: center;
  font-size: 14px;
  color: var(--accent-blue);
  transition: all 0.3s ease;
  flex-shrink: 0;
}
.faq-item.active .faq-icon {
  transform: rotate(45deg);
  background: rgba(47,140,255,0.25);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}
.faq-answer-inner {
  padding: 0 24px 18px;
  font-size: 14.5px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ===== 页脚 ===== */
.site-footer {
  background: var(--bg-deep);
  border-top: 1px solid rgba(212,175,55,0.2);
  padding: 60px 40px 24px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  max-width: 1200px;
  margin: 0 auto;
}
.footer-logo {
  font-size: 22px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 12px;
}
.footer-logo span {
  color: var(--accent-blue);
}
.footer-desc {
  font-size: 14px;
  color: #7C879A;
  line-height: 1.7;
  max-width: 360px;
}
.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 16px;
}
.footer-col a {
  display: block;
  font-size: 14px;
  color: #7C879A;
  padding: 5px 0;
  transition: color 0.25s ease, padding-left 0.25s ease;
}
.footer-col a:hover {
  color: var(--accent-blue);
  padding-left: 4px;
}
.footer-bottom {
  max-width: 1200px;
  margin: 40px auto 0;
  padding-top: 20px;
  border-top: 1px solid rgba(255,255,255,0.06);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 13px;
  color: #5E6A7A;
}

/* ===== 响应式 ===== */
@media (max-width: 1279px) {
  .main-content { margin-left: 76px; }
}

@media (max-width: 767px) {
  .mobile-header { display: flex; }
  .app-sidebar {
    transform: translateX(-100%);
    width: 280px;
    align-items: flex-start;
    padding: 20px 16px;
  }
  .app-sidebar.open {
    transform: translateX(0);
  }
  .sidebar-logo {
    flex-direction: row;
    gap: 10px;
    margin-bottom: 24px;
    padding: 0 10px;
  }
  .logo-mark { width: 36px; height: 36px; font-size: 16px; }
  .logo-text { font-size: 16px; margin-top: 0; }
  .drawer-nav {
    align-items: flex-start;
    gap: 4px;
  }
  .nav-item {
    flex-direction: row;
    width: 100%;
    height: 48px;
    gap: 12px;
    font-size: 14px;
    padding: 0 14px;
    justify-content: flex-start;
  }
  .nav-item i { font-size: 16px; margin-bottom: 0; }
  .nav-item.active::before {
    left: 0;
    top: auto;
    bottom: 0;
    transform: none;
    width: 100%;
    height: 2px;
  }
  .sidebar-avatar {
    margin-top: auto;
  }
  .main-content { margin-left: 0; padding-top: 58px; }
  .article-hero { padding: 40px 20px 36px; }
  .article-section { padding: 40px 16px; }
  .article-content { padding: 28px 20px; }
  .related-section { padding: 40px 16px; }
  .cta-section { padding: 56px 20px; }
  .faq-section { padding: 40px 16px; }
  .site-footer { padding: 40px 20px 20px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .prev-next { grid-template-columns: 1fr; }
  .related-grid { grid-template-columns: 1fr; }
}

@media (max-width: 520px) {
  .article-hero { padding: 28px 16px 28px; }
  .breadcrumb { font-size: 12px; }
  .article-title { font-size: 1.4rem; }
  .article-meta { gap: 10px; font-size: 13px; flex-wrap: wrap; }
  .article-content { padding: 20px 16px; }
  .article-content h2 { font-size: 1.25rem; }
  .article-content p { font-size: 0.9375rem; }
  .cta-title { font-size: 1.5rem; }
  .cta-btn-group { flex-direction: column; align-items: center; }
  .btn { width: 100%; justify-content: center; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

/* roulang page: category2 */
:root {
      --bg-primary: #0B1E3A;
      --bg-secondary: #0E2445;
      --bg-deep: #060D1D;
      --accent-blue: #2F8CFF;
      --accent-gold: #D4AF37;
      --text-primary: #FFFFFF;
      --text-secondary: #9DA9B9;
      --text-body: #E1E8F0;
      --glass-bg: rgba(255, 255, 255, 0.06);
      --glass-border: rgba(255, 255, 255, 0.12);
      --radius-card: 16px;
      --radius-btn: 10px;
      --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.3);
      --shadow-hover: 0 8px 32px rgba(47, 140, 255, 0.15);
      --shadow-glow: 0 0 20px rgba(47, 140, 255, 0.5);
      --shadow-gold: 0 0 16px rgba(212, 175, 55, 0.35);
    }

    /* ===== Reset & Base ===== */
    *,
    *::before,
    *::after {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      font-family: "PingFang SC", "HarmonyOS Sans SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
      background: var(--bg-primary);
      color: var(--text-body);
      line-height: 1.75;
      font-size: 16px;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }
    img {
      max-width: 100%;
      display: block;
    }
    a {
      color: inherit;
      text-decoration: none;
      transition: all .25s ease;
    }
    button {
      font-family: inherit;
      cursor: pointer;
      border: none;
      background: none;
    }
    h1, h2, h3, h4, h5 {
      color: var(--text-primary);
      letter-spacing: .02em;
      line-height: 1.3;
    }
    .container-lg {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 1.5rem;
    }
    .section {
      padding: clamp(3rem, 6vw, 5rem) 0;
      position: relative;
    }
    .section-tag {
      display: inline-flex;
      align-items: center;
      gap: .5rem;
      font-size: .8125rem;
      letter-spacing: .14em;
      color: var(--accent-blue);
      font-weight: 600;
      text-transform: uppercase;
      margin-bottom: .75rem;
    }
    .section-tag::before {
      content: "";
      width: 28px;
      height: 2px;
      background: linear-gradient(90deg, var(--accent-blue), var(--accent-gold));
      border-radius: 999px;
    }

    /* ===== 桌面侧边导航 ===== */
    .side-nav {
      position: fixed;
      left: 0;
      top: 0;
      bottom: 0;
      width: 76px;
      background: rgba(6, 13, 29, 0.82);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-right: 1px solid rgba(255, 255, 255, 0.08);
      display: flex;
      flex-direction: column;
      align-items: center;
      padding: 1.25rem 0 1rem;
      z-index: 50;
    }
    .side-logo {
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 6px;
      margin-bottom: 2rem;
    }
    .logo-mark {
      width: 40px;
      height: 40px;
      border-radius: 12px;
      background: linear-gradient(135deg, var(--accent-blue), #1E6FD9);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-weight: 800;
      font-size: 1.1rem;
      box-shadow: 0 0 20px rgba(47, 140, 255, 0.35);
      flex-shrink: 0;
    }
    .side-logo-text {
      color: #fff;
      font-size: .625rem;
      font-weight: 700;
      letter-spacing: .05em;
    }
    .side-nav-links {
      flex: 1;
      display: flex;
      flex-direction: column;
      gap: 6px;
      width: 100%;
      align-items: center;
    }
    .side-nav-links a {
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 4px;
      width: 64px;
      padding: 10px 0;
      border-radius: 12px;
      color: #9DA9B9;
      font-size: .625rem;
      font-weight: 500;
      position: relative;
      transition: all .25s ease;
    }
    .side-nav-links a i {
      font-size: 1.125rem;
      transition: all .25s ease;
    }
    .side-nav-links a:hover {
      color: #fff;
      background: rgba(47, 140, 255, 0.12);
    }
    .side-nav-links a.active {
      color: #fff;
      background: rgba(47, 140, 255, 0.1);
    }
    .side-nav-links a.active::before {
      content: "";
      position: absolute;
      left: -6px;
      top: 50%;
      transform: translateY(-50%);
      width: 3px;
      height: 22px;
      border-radius: 999px;
      background: var(--accent-gold);
      box-shadow: var(--shadow-gold);
    }
    .side-nav-links a.active i {
      color: var(--accent-blue);
      text-shadow: 0 0 12px rgba(47, 140, 255, 0.6);
    }
    .side-avatar {
      width: 36px;
      height: 36px;
      border-radius: 50%;
      border: 2px solid rgba(255, 255, 255, 0.25);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-weight: 700;
      font-size: .875rem;
      margin-top: auto;
    }

    /* ===== 移动端顶栏 + 抽屉 ===== */
    .mobile-topbar {
      display: none;
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      height: 56px;
      background: rgba(6, 13, 29, 0.9);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      align-items: center;
      justify-content: space-between;
      padding: 0 1rem;
      z-index: 60;
    }
    .mobile-logo {
      display: flex;
      align-items: center;
      gap: .5rem;
      color: #fff;
      font-size: .9375rem;
      font-weight: 700;
    }
    .mobile-logo .logo-mark {
      width: 32px;
      height: 32px;
      font-size: .875rem;
      border-radius: 10px;
    }
    .burger {
      width: 42px;
      height: 42px;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      gap: 5px;
      border-radius: 10px;
      border: 1px solid rgba(255, 255, 255, 0.1);
    }
    .burger span {
      width: 20px;
      height: 2px;
      background: #fff;
      border-radius: 2px;
      transition: all .3s ease;
    }
    .drawer-overlay {
      display: none;
      position: fixed;
      inset: 0;
      background: rgba(5, 11, 24, 0.6);
      backdrop-filter: blur(4px);
      -webkit-backdrop-filter: blur(4px);
      z-index: 70;
      opacity: 0;
      transition: opacity .3s ease;
    }
    .drawer-overlay.open {
      display: block;
      opacity: 1;
    }
    .drawer-nav {
      position: fixed;
      top: 0;
      left: 0;
      bottom: 0;
      width: 280px;
      background: #081528;
      border-right: 1px solid rgba(255, 255, 255, 0.08);
      padding: 2rem 1.5rem;
      z-index: 80;
      transform: translateX(-100%);
      transition: transform .32s ease;
      display: flex;
      flex-direction: column;
      gap: .5rem;
    }
    .drawer-nav.open {
      transform: translateX(0);
    }
    .drawer-nav a {
      display: flex;
      align-items: center;
      gap: .75rem;
      padding: .75rem 1rem;
      border-radius: 12px;
      color: var(--text-secondary);
      font-weight: 500;
      font-size: .9375rem;
    }
    .drawer-nav a i {
      width: 20px;
      text-align: center;
    }
    .drawer-nav a:hover {
      background: rgba(47, 140, 255, 0.12);
      color: #fff;
    }
    .drawer-nav a.active {
      background: rgba(47, 140, 255, 0.15);
      color: #fff;
      box-shadow: inset 3px 0 0 var(--accent-gold);
    }

    /* ===== 主内容区 ===== */
    .site-main {
      margin-left: 76px;
      min-height: 100vh;
    }

    /* ===== Hero ===== */
    .category-hero {
      position: relative;
      min-height: 340px;
      background-size: cover;
      background-position: center;
      display: flex;
      align-items: center;
      padding: clamp(3rem, 6vw, 5rem) 0;
    }
    .hero-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(100deg, rgba(5, 11, 24, 0.92) 30%, rgba(5, 11, 24, 0.55) 65%, rgba(11, 30, 58, 0.35) 100%);
    }
    .hero-inner {
      position: relative;
      z-index: 2;
    }
    .hero-eyebrow {
      display: inline-flex;
      align-items: center;
      gap: .5rem;
      padding: .4rem 1rem;
      border-radius: 999px;
      border: 1px solid rgba(47, 140, 255, 0.3);
      background: rgba(47, 140, 255, 0.12);
      color: #7AB8FF;
      font-size: .8125rem;
      font-weight: 600;
      margin-bottom: 1rem;
    }
    .hero-inner h1 {
      font-size: clamp(2rem, 4.5vw, 3rem);
      font-weight: 800;
      margin-bottom: .75rem;
      background: linear-gradient(120deg, #fff 60%, #7AB8FF);
      -webkit-background-clip: text;
      background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-sub {
      max-width: 640px;
      font-size: 1.05rem;
      color: #C3CFDF;
      margin-bottom: 1.5rem;
      line-height: 1.8;
    }
    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 1rem;
      margin-bottom: 1.5rem;
    }
    .hero-meta {
      display: flex;
      flex-wrap: wrap;
      gap: 1.25rem;
      color: #9DA9B9;
      font-size: .8125rem;
    }
    .hero-meta span {
      display: inline-flex;
      align-items: center;
      gap: .4rem;
    }
    .hero-meta i {
      color: var(--accent-gold);
    }

    /* ===== 按钮 ===== */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: .5rem;
      padding: .875rem 2rem;
      border-radius: var(--radius-btn);
      font-weight: 600;
      font-size: .9375rem;
      line-height: 1.2;
      transition: all .25s ease;
      border: none;
    }
    .btn-primary {
      background: linear-gradient(135deg, var(--accent-blue), #1E6FD9);
      color: #fff;
      box-shadow: var(--shadow-glow);
    }
    .btn-primary:hover {
      filter: brightness(1.1);
      box-shadow: 0 0 30px rgba(47, 140, 255, 0.65);
      transform: translateY(-2px);
    }
    .btn-primary:active {
      transform: scale(0.97);
      box-shadow: 0 0 12px rgba(47, 140, 255, 0.35);
    }
    .btn-outline {
      background: transparent;
      border: 1px solid rgba(255, 255, 255, 0.2);
      color: #E1E8F0;
    }
    .btn-outline:hover {
      border-color: var(--accent-blue);
      background: rgba(47, 140, 255, 0.08);
      color: #fff;
      transform: translateY(-2px);
    }
    .btn-outline:active {
      transform: scale(0.97);
    }

    /* ===== 玩法概览 ===== */
    .overview-section {
      background: linear-gradient(180deg, var(--bg-primary), var(--bg-secondary));
    }
    .overview-grid {
      display: grid;
      grid-template-columns: 1.9fr 1fr;
      gap: 3rem;
      align-items: start;
    }
    .overview-main h2 {
      font-size: clamp(1.5rem, 2.5vw, 2rem);
      font-weight: 700;
      margin-bottom: 1rem;
    }
    .overview-main p {
      color: var(--text-body);
      margin-bottom: 1rem;
      font-size: .975rem;
    }
    .overview-main blockquote {
      border-left: 3px solid var(--accent-gold);
      background: rgba(212, 175, 55, 0.06);
      border-radius: 0 12px 12px 0;
      padding: 1rem 1.25rem;
      color: #C3CFDF;
      margin: 1.5rem 0;
      font-size: .9375rem;
    }
    .link-more {
      display: inline-flex;
      align-items: center;
      gap: .5rem;
      color: var(--accent-blue);
      font-weight: 600;
      font-size: .9375rem;
    }
    .link-more:hover {
      gap: .8rem;
      color: #7AB8FF;
    }
    .stats-row {
      display: flex;
      flex-wrap: wrap;
      gap: 1.5rem;
      margin-top: 1.75rem;
      padding-top: 1.5rem;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
    }
    .stat-item {
      text-align: center;
      padding: 0 .5rem;
    }
    .stat-item strong {
      display: block;
      font-size: 1.5rem;
      color: #fff;
      font-weight: 800;
      font-feature-settings: "tnum";
    }
    .stat-item strong em {
      color: var(--accent-gold);
      font-style: normal;
      font-size: 1rem;
    }
    .stat-item span {
      font-size: .8125rem;
      color: var(--text-secondary);
    }
    .overview-side {
      background: var(--glass-bg);
      border: 1px solid var(--glass-border);
      border-radius: var(--radius-card);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      box-shadow: var(--shadow-card);
      padding: 1.5rem;
    }
    .overview-side h3 {
      font-size: 1.125rem;
      font-weight: 700;
      margin-bottom: 1rem;
      padding-bottom: .75rem;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      display: flex;
      align-items: center;
      gap: .5rem;
    }
    .side-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: .75rem;
    }
    .side-list li {
      display: flex;
      gap: .875rem;
      padding: .875rem;
      border-radius: 12px;
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.06);
      transition: all .25s ease;
    }
    .side-list li:hover {
      background: rgba(47, 140, 255, 0.08);
      border-color: rgba(47, 140, 255, 0.2);
      transform: translateX(4px);
    }
    .side-rank {
      font-size: 1rem;
      font-weight: 800;
      color: var(--accent-gold);
      line-height: 1.2;
      min-width: 28px;
    }
    .side-list strong {
      color: #fff;
      font-size: .9375rem;
    }
    .side-list p {
      color: var(--text-secondary);
      font-size: .8125rem;
      margin-top: 2px;
      line-height: 1.5;
    }

    /* ===== 玩法卡片 ===== */
    .modes-section {
      background: #081528;
      background-image:
        linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
      background-size: 42px 42px;
    }
    .section-head {
      text-align: center;
      margin-bottom: 2.5rem;
    }
    .section-head h2 {
      font-size: clamp(1.5rem, 2.5vw, 2rem);
      font-weight: 700;
    }
    .modes-grid {
      display: grid;
      grid-template-columns: repeat(12, 1fr);
      gap: 1.5rem;
    }
    .mode-card {
      position: relative;
      border-radius: var(--radius-card);
      overflow: hidden;
      background: var(--glass-bg);
      border: 1px solid var(--glass-border);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      box-shadow: var(--shadow-card);
      transition: all .3s ease;
    }
    .mode-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 2px;
      background: linear-gradient(90deg, var(--accent-blue), var(--accent-gold));
      z-index: 2;
      opacity: .8;
    }
    .mode-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-hover);
    }
    .mode-card-lg {
      grid-column: span 7;
    }
    .mode-card-sm {
      grid-column: span 5;
    }
    .mode-card:nth-child(3) {
      grid-column: span 5;
    }
    .mode-card:nth-child(4) {
      grid-column: span 7;
    }
    .mode-card img {
      width: 100%;
      height: 200px;
      object-fit: cover;
      object-position: center;
      transition: transform .4s ease;
    }
    .mode-card:hover img {
      transform: scale(1.04);
    }
    .mode-card-sm img {
      height: 170px;
    }
    .mode-badge {
      position: absolute;
      top: 14px;
      right: 14px;
      background: linear-gradient(135deg, var(--accent-gold), #B8963A);
      color: #081528;
      font-size: .75rem;
      font-weight: 700;
      padding: .25rem .75rem;
      border-radius: 999px;
      box-shadow: var(--shadow-gold);
      z-index: 3;
    }
    .mode-body {
      padding: 1.25rem;
    }
    .mode-body h3 {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: .5rem;
    }
    .mode-body p {
      color: var(--text-secondary);
      font-size: .875rem;
      line-height: 1.65;
      margin-bottom: .875rem;
    }
    .card-link {
      display: inline-flex;
      align-items: center;
      gap: .4rem;
      color: var(--accent-blue);
      font-size: .875rem;
      font-weight: 600;
    }
    .card-link:hover {
      gap: .7rem;
      color: #7AB8FF;
    }

    /* ===== 实时赛况 ===== */
    .live-section {
      background: var(--bg-secondary);
    }
    .live-wrap {
      border-radius: var(--radius-card);
      border: 1px solid rgba(255, 255, 255, 0.1);
      background: rgba(11, 30, 58, 0.7);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      box-shadow: var(--shadow-card);
      overflow: hidden;
    }
    .live-head {
      display: flex;
      align-items: center;
      gap: .625rem;
      padding: 1.125rem 1.5rem;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      font-weight: 700;
      color: #fff;
      font-size: .9375rem;
    }
    .live-dot {
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background: #22C55E;
      box-shadow: 0 0 0 4px rgba(34, 197, 94, 0.2);
      animation: pulse 1.6s infinite;
    }
    @keyframes pulse {
      0% { box-shadow: 0 0 0 4px rgba(34, 197, 94, 0.2); }
      70% { box-shadow: 0 0 0 10px rgba(34, 197, 94, 0); }
      100% { box-shadow: 0 0 0 4px rgba(34, 197, 94, 0); }
    }
    .live-list {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
    }
    .live-item {
      padding: 1.5rem;
      border-right: 1px solid rgba(255, 255, 255, 0.06);
      transition: background .25s ease;
    }
    .live-item:last-child {
      border-right: none;
    }
    .live-item:hover {
      background: rgba(255, 255, 255, 0.03);
    }
    .live-team {
      color: #fff;
      font-weight: 700;
      font-size: 1rem;
      margin-bottom: .75rem;
      display: flex;
      align-items: center;
      gap: .5rem;
      flex-wrap: wrap;
    }
    .live-team span {
      color: var(--accent-gold);
      font-feature-settings: "tnum";
      font-size: 1.125rem;
    }
    .live-status {
      display: inline-block;
      padding: .25rem .75rem;
      border-radius: 999px;
      font-size: .75rem;
      font-weight: 600;
      background: rgba(34, 197, 94, 0.15);
      color: #22C55E;
      margin-bottom: .5rem;
    }
    .live-count {
      display: block;
      color: var(--text-secondary);
      font-size: .8125rem;
    }

    /* ===== 参与流程 ===== */
    .steps-section {
      background: var(--bg-primary);
    }
    .steps-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.5rem;
      margin-top: 2rem;
    }
    .step-item {
      position: relative;
      background: var(--glass-bg);
      border: 1px solid var(--glass-border);
      border-radius: var(--radius-card);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      padding: 2rem 1.5rem 1.5rem;
      transition: all .3s ease;
    }
    .step-item:hover {
      transform: translateY(-4px);
      background: rgba(255, 255, 255, 0.08);
      box-shadow: var(--shadow-hover);
    }
    .step-num {
      position: absolute;
      top: -18px;
      left: 1.5rem;
      width: 40px;
      height: 40px;
      border-radius: 12px;
      background: linear-gradient(135deg, var(--accent-blue), #1E6FD9);
      color: #fff;
      font-weight: 800;
      font-size: 1.125rem;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: var(--shadow-glow);
    }
    .step-item h3 {
      font-size: 1.0625rem;
      font-weight: 700;
      margin-bottom: .5rem;
      margin-top: .5rem;
    }
    .step-item p {
      color: var(--text-secondary);
      font-size: .875rem;
      line-height: 1.7;
    }

    /* ===== FAQ ===== */
    .faq-section {
      background: #081528;
    }
    .faq-list {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 1rem;
      margin-top: 2rem;
    }
    .faq-item {
      background: var(--glass-bg);
      border: 1px solid var(--glass-border);
      border-radius: var(--radius-card);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      overflow: hidden;
      transition: all .3s ease;
    }
    .faq-item:hover {
      border-color: rgba(47, 140, 255, 0.2);
    }
    .faq-question {
      width: 100%;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 1rem;
      padding: 1.125rem 1.5rem;
      color: #fff;
      font-size: .9375rem;
      font-weight: 600;
      text-align: left;
      transition: all .25s ease;
    }
    .faq-question:hover {
      color: #7AB8FF;
    }
    .faq-icon {
      width: 30px;
      height: 30px;
      border-radius: 50%;
      background: rgba(47, 140, 255, 0.12);
      display: flex;
      align-items: center;
      justify-content: center;
      position: relative;
      flex-shrink: 0;
      transition: all .3s ease;
    }
    .faq-icon::before {
      content: "+";
      color: var(--accent-blue);
      font-size: 1.25rem;
      font-weight: 300;
      line-height: 1;
      transition: transform .3s ease;
    }
    .faq-item.open .faq-icon::before {
      transform: rotate(45deg);
      color: var(--accent-gold);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height .35s ease;
    }
    .faq-answer-inner {
      padding: 0 1.5rem 1.25rem;
      color: var(--text-secondary);
      font-size: .875rem;
      line-height: 1.75;
    }

    /* ===== CTA ===== */
    .cta-section {
      position: relative;
      overflow: hidden;
    }
    .cta-section::before {
      content: "";
      position: absolute;
      inset: 0;
      background: radial-gradient(ellipse at 30% 50%, rgba(47, 140, 255, 0.25), transparent 60%),
        radial-gradient(ellipse at 75% 60%, rgba(212, 175, 55, 0.15), transparent 55%),
        linear-gradient(135deg, #0A1428, #0B1E3A 60%, #0E2445);
    }
    .cta-box {
      position: relative;
      text-align: center;
      max-width: 720px;
      margin: 0 auto;
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: calc(var(--radius-card) + 8px);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      padding: clamp(2.5rem, 5vw, 4rem) clamp(1.5rem, 3vw, 3rem);
      box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
    }
    .cta-box h2 {
      font-size: clamp(1.5rem, 3vw, 2.2rem);
      font-weight: 800;
      margin-bottom: .75rem;
    }
    .cta-box p {
      color: var(--text-secondary);
      max-width: 480px;
      margin: 0 auto 1.75rem;
      font-size: .9375rem;
    }

    /* ===== 页脚 ===== */
    .site-footer {
      background: #060D1D;
      border-top: 1px solid rgba(212, 175, 55, 0.2);
      margin-left: 76px;
      padding: 3rem 1.5rem 1.5rem;
    }
    .footer-grid {
      max-width: 1200px;
      margin: 0 auto;
      display: grid;
      grid-template-columns: 2fr 1fr 1fr;
      gap: 2.5rem;
    }
    .footer-logo {
      color: #fff;
      font-size: 1.25rem;
      font-weight: 800;
      display: flex;
      align-items: center;
      gap: .5rem;
      margin-bottom: .75rem;
    }
    .footer-logo .logo-mark {
      width: 34px;
      height: 34px;
      font-size: .9rem;
      border-radius: 10px;
    }
    .footer-logo span {
      color: var(--accent-gold);
    }
    .footer-desc {
      color: #7C879A;
      font-size: .875rem;
      line-height: 1.7;
      max-width: 360px;
    }
    .footer-col h4 {
      color: #fff;
      font-size: .9375rem;
      font-weight: 700;
      margin-bottom: 1rem;
    }
    .footer-col a {
      display: block;
      color: #7C879A;
      font-size: .875rem;
      padding: .25rem 0;
    }
    .footer-col a:hover {
      color: #fff;
      padding-left: 4px;
    }
    .footer-bottom {
      max-width: 1200px;
      margin: 2.5rem auto 0;
      padding-top: 1.25rem;
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      display: flex;
      justify-content: space-between;
      align-items: center;
      color: #5B6677;
      font-size: .8125rem;
      flex-wrap: wrap;
      gap: .5rem;
    }

    /* ===== 响应式 ===== */
    @media (max-width: 1279px) {
      .overview-grid {
        gap: 2rem;
      }
    }
    @media (max-width: 1024px) {
      .overview-grid {
        grid-template-columns: 1fr;
      }
      .overview-side {
        max-width: 100%;
      }
      .modes-grid {
        grid-template-columns: 1fr 1fr;
      }
      .mode-card-lg,
      .mode-card-sm,
      .mode-card:nth-child(3),
      .mode-card:nth-child(4) {
        grid-column: span 1;
      }
      .live-list {
        grid-template-columns: 1fr;
      }
      .live-item {
        border-right: none;
        border-bottom: 1px solid rgba(255, 255, 255, 0.06);
      }
      .live-item:last-child {
        border-bottom: none;
      }
    }
    @media (max-width: 767px) {
      .side-nav {
        display: none;
      }
      .site-main {
        margin-left: 0;
        padding-top: 56px;
      }
      .site-footer {
        margin-left: 0;
      }
      .mobile-topbar {
        display: flex;
      }
      .category-hero {
        min-height: 300px;
      }
      .hero-inner h1 {
        font-size: clamp(1.8rem, 6vw, 2.2rem);
      }
      .hero-actions {
        flex-direction: column;
        align-items: stretch;
      }
      .hero-actions .btn {
        width: 100%;
      }
      .hero-meta {
        flex-direction: column;
        gap: .5rem;
      }
      .modes-grid {
        grid-template-columns: 1fr;
      }
      .steps-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
      }
      .step-item {
        padding-top: 2.25rem;
      }
      .step-num {
        top: -18px;
      }
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
      }
      .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
      }
      .stats-row {
        gap: 1rem;
      }
      .stat-item {
        padding: 0 .25rem;
      }
    }
    @media (max-width: 520px) {
      .container-lg {
        padding: 0 1rem;
      }
      .section {
        padding: 2.5rem 0;
      }
      .mode-card img {
        height: 150px;
      }
      .mode-card-sm img {
        height: 150px;
      }
    }