/* roulang page: index */
:root {
    --bg: #0a0e17;
    --bg2: #0e1524;
    --panel: #131b2b;
    --panel2: #1a2438;
    --line: rgba(255, 255, 255, .08);
    --txt: #f1f5ff;
    --muted: #8fa0bf;
    --primary: #00e5ff;
    --primary-deep: #00b8d4;
    --secondary: #a855f7;
    --accent: #fbbf24;
    --radius: 16px;
    --radius-sm: 10px;
    --shadow: 0 10px 40px rgba(0, 0, 0, .35);
    --glow: 0 0 22px rgba(0, 229, 255, .25);
  }
  * { margin: 0; padding: 0; box-sizing: border-box; }
  html { scroll-behavior: smooth; }
  body {
    font-family: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
    background: var(--bg);
    color: var(--txt);
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
    background-image: radial-gradient(circle at 12% 8%, rgba(0, 229, 255, .06), transparent 32%), radial-gradient(circle at 88% 16%, rgba(168, 85, 247, .07), transparent 30%);
  }
  a { color: inherit; text-decoration: none; }
  img { max-width: 100%; display: block; }
  button { font-family: inherit; cursor: pointer; }
  input { font-family: inherit; }
  .wrap { width: 100%; max-width: 1220px; margin: 0 auto; padding: 0 24px; }
  .section { padding: 92px 0; position: relative; }
  .section-alt { background: var(--bg2); }
  .section-head { text-align: center; max-width: 720px; margin: 0 auto 52px; }
  .section-tag {
    display: inline-flex; align-items: center; gap: 8px;
    font-size: 13px; font-weight: 700; letter-spacing: .14em; color: var(--primary);
    background: rgba(0, 229, 255, .08); border: 1px solid rgba(0, 229, 255, .22);
    padding: 6px 16px; border-radius: 999px; text-transform: uppercase;
  }
  .section-head h2 { font-size: clamp(28px, 4vw, 40px); line-height: 1.25; font-weight: 800; margin: 14px 0 14px; }
  .section-head p { color: var(--muted); font-size: 16px; }
  .btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 9px;
    padding: 13px 28px; border-radius: 999px; font-weight: 700; font-size: 15px;
    transition: all .25s ease; border: none; line-height: 1.2; white-space: nowrap;
  }
  .btn-primary {
    background: linear-gradient(135deg, var(--primary), #22d3ee); color: #061014;
    box-shadow: 0 8px 30px rgba(0, 229, 255, .3);
  }
  .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 38px rgba(0, 229, 255, .45); }
  .btn-primary:active { transform: translateY(0); box-shadow: 0 4px 16px rgba(0, 229, 255, .3); }
  .btn-ghost {
    background: rgba(255, 255, 255, .04); color: var(--txt);
    border: 1px solid rgba(255, 255, 255, .16); backdrop-filter: blur(10px);
  }
  .btn-ghost:hover { border-color: var(--primary); color: var(--primary); background: rgba(0, 229, 255, .07); }
  .btn-ghost:active { transform: scale(.98); }
  .btn-secondary {
    background: linear-gradient(135deg, var(--secondary), #c084fc); color: #0b0314;
    box-shadow: 0 8px 30px rgba(168, 85, 247, .3);
  }
  .btn-secondary:hover { transform: translateY(-2px); box-shadow: 0 12px 36px rgba(168, 85, 247, .42); }
  .btn-sm { padding: 10px 20px; font-size: 14px; }
  .btn-lg { padding: 16px 36px; font-size: 16px; }
  .site-header {
    position: sticky; top: 0; z-index: 100;
    background: rgba(10, 14, 23, .8); backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(0, 229, 255, .14);
    box-shadow: 0 6px 30px rgba(0, 0, 0, .38);
  }
  .header-inner { display: flex; align-items: center; justify-content: space-between; min-height: 72px; gap: 16px; }
  .brand { display: inline-flex; align-items: center; gap: 10px; font-size: 20px; font-weight: 800; letter-spacing: .01em; color: var(--txt); }
  .brand-dot {
    width: 10px; height: 10px; border-radius: 50%; background: var(--primary);
    box-shadow: 0 0 14px var(--primary); flex-shrink: 0;
  }
  .brand span { color: var(--primary); text-shadow: 0 0 14px rgba(0, 229, 255, .5); }
  .main-nav { display: flex; align-items: center; gap: 4px; }
  .nav-link {
    padding: 9px 18px; border-radius: 999px; font-size: 14px; font-weight: 600;
    color: var(--muted); border: 1px solid transparent; transition: all .25s ease;
  }
  .nav-link:hover { color: var(--txt); background: rgba(0, 229, 255, .08); border-color: rgba(0, 229, 255, .18); }
  .nav-link.active {
    color: #041217; background: linear-gradient(120deg, var(--primary), #5ee7ff);
    border-color: transparent; box-shadow: 0 4px 20px rgba(0, 229, 255, .35);
  }
  .header-actions { display: flex; align-items: center; gap: 12px; }
  .nav-toggle {
    display: none; width: 42px; height: 42px; border-radius: 10px;
    background: rgba(255, 255, 255, .05); border: 1px solid var(--line);
    flex-direction: column; align-items: center; justify-content: center; gap: 5px;
  }
  .nav-toggle span { width: 18px; height: 2px; background: var(--txt); border-radius: 2px; transition: .3s; }
  .hero {
    position: relative; min-height: 720px; display: flex; align-items: center;
    background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
    padding: 110px 0; overflow: hidden;
  }
  .hero::before {
    content: ''; position: absolute; inset: 0;
    background: linear-gradient(180deg, rgba(10, 14, 23, .88) 0%, rgba(10, 14, 23, .72) 58%, var(--bg) 100%);
  }
  .hero::after {
    content: ''; position: absolute; left: -10%; right: -10%; bottom: -40%;
    height: 260px; background: radial-gradient(ellipse at center, rgba(0, 229, 255, .12), transparent 65%); pointer-events: none;
  }
  .hero-inner { position: relative; z-index: 2; max-width: 860px; text-align: center; }
  .hero-badge {
    display: inline-flex; align-items: center; gap: 9px;
    font-size: 13px; font-weight: 700; letter-spacing: .1em; color: var(--primary);
    background: rgba(0, 229, 255, .08); border: 1px solid rgba(0, 229, 255, .25);
    padding: 8px 18px; border-radius: 999px; backdrop-filter: blur(6px);
    box-shadow: 0 0 24px rgba(0, 229, 255, .12);
  }
  .hero-badge .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--primary); box-shadow: 0 0 12px var(--primary); }
  .hero h1 { font-size: clamp(38px, 6vw, 64px); font-weight: 900; line-height: 1.18; margin: 22px 0 18px; letter-spacing: .02em; }
  .hero h1 .grad { background: linear-gradient(120deg, var(--primary), #7df9ff, #c084fc); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
  .hero-sub { font-size: 17px; color: #c6d2e6; max-width: 620px; margin: 0 auto 34px; line-height: 1.8; }
  .hero-actions { display: flex; align-items: center; justify-content: center; gap: 16px; flex-wrap: wrap; }
  .hero-search {
    margin: 40px auto 0; max-width: 560px; display: flex; align-items: center;
    background: rgba(10, 14, 23, .66); border: 1px solid rgba(255, 255, 255, .12);
    border-radius: 999px; padding: 6px; backdrop-filter: blur(12px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, .35); transition: border-color .25s;
  }
  .hero-search:focus-within { border-color: rgba(0, 229, 255, .45); box-shadow: 0 0 36px rgba(0, 229, 255, .12); }
  .hero-search input {
    flex: 1; background: transparent; border: none; outline: none;
    color: var(--txt); font-size: 14px; padding: 0 18px; min-width: 0;
  }
  .hero-search input::placeholder { color: #62748f; }
  .hero-search button {
    width: 44px; height: 44px; border-radius: 50%; border: none;
    background: linear-gradient(135deg, var(--primary), #22d3ee); color: #061014;
    display: flex; align-items: center; justify-content: center; flex-shrink: 0;
    font-size: 15px; transition: all .25s; box-shadow: 0 4px 14px rgba(0, 229, 255, .3);
  }
  .hero-search button:hover { transform: rotate(8deg) scale(1.06); }
  .stats-bar { margin-top: -58px; position: relative; z-index: 5; padding-bottom: 0; }
  .stats-grid {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px;
    background: rgba(19, 27, 43, .92); border: 1px solid var(--line);
    border-radius: 20px; padding: 34px 28px; backdrop-filter: blur(14px);
    box-shadow: var(--shadow);
  }
  .stat-card { text-align: center; position: relative; padding: 6px 0; }
  .stat-card b {
    display: block; font-size: clamp(30px, 4vw, 42px); font-weight: 900; color: var(--primary);
    text-shadow: 0 0 20px rgba(0, 229, 255, .35); line-height: 1.1;
  }
  .stat-card span { font-size: 14px; color: var(--muted); margin-top: 8px; display: block; }
  .stat-card + .stat-card::before {
    content: ''; position: absolute; left: -9px; top: 18%; height: 64%;
    width: 1px; background: var(--line);
  }
  .feature-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
  .feature-card {
    background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
    padding: 34px 26px; transition: all .3s ease; position: relative; overflow: hidden;
  }
  .feature-card::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    opacity: 0; transition: opacity .3s;
  }
  .feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: rgba(0, 229, 255, .22); }
  .feature-card:hover::before { opacity: 1; }
  .feature-icon {
    width: 56px; height: 56px; border-radius: 16px; display: flex; align-items: center; justify-content: center;
    background: rgba(0, 229, 255, .09); border: 1px solid rgba(0, 229, 255, .18);
    color: var(--primary); font-size: 22px; margin-bottom: 18px;
    box-shadow: 0 0 20px rgba(0, 229, 255, .08); transition: all .3s;
  }
  .feature-card:hover .feature-icon { background: var(--primary); color: #061014; box-shadow: 0 0 28px rgba(0, 229, 255, .4); }
  .feature-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 10px; }
  .feature-card p { color: var(--muted); font-size: 14px; line-height: 1.75; }
  .cat-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 26px; }
  .cat-card {
    position: relative; border-radius: 20px; overflow: hidden; min-height: 320px;
    display: flex; align-items: flex-end; border: 1px solid var(--line);
    transition: all .35s ease; box-shadow: 0 8px 30px rgba(0, 0, 0, .28);
  }
  .cat-card:hover { transform: translateY(-8px); border-color: rgba(0, 229, 255, .35); box-shadow: 0 18px 50px rgba(0, 0, 0, .5), 0 0 30px rgba(0, 229, 255, .08); }
  .cat-card img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
  .cat-card:hover img { transform: scale(1.06); }
  .cat-card .cat-mask {
    position: absolute; inset: 0; background: linear-gradient(185deg, rgba(10, 14, 23, .15) 20%, rgba(10, 14, 23, .92) 100%);
  }
  .cat-content { position: relative; z-index: 2; padding: 32px; width: 100%; }
  .cat-content h3 { font-size: 24px; font-weight: 800; margin-bottom: 8px; }
  .cat-content p { color: #bfcbe0; font-size: 14px; margin-bottom: 18px; max-width: 360px; }
  .cat-link {
    display: inline-flex; align-items: center; gap: 8px; font-size: 14px; font-weight: 700; color: var(--primary);
    border-bottom: 1px solid transparent; padding-bottom: 3px; transition: .25s;
  }
  .cat-link:hover { border-color: var(--primary); gap: 12px; }
  .news-list { display: flex; flex-direction: column; gap: 16px; max-width: 900px; margin: 0 auto; }
  .news-item {
    display: flex; align-items: center; gap: 18px;
    background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius-sm);
    padding: 18px 22px; transition: all .28s ease;
  }
  .news-item:hover { transform: translateX(6px); border-color: rgba(0, 229, 255, .28); box-shadow: 0 6px 24px rgba(0, 0, 0, .3); }
  .news-tag {
    flex-shrink: 0; font-size: 12px; font-weight: 700; padding: 4px 12px; border-radius: 999px;
    background: rgba(168, 85, 247, .12); color: #d8b4fe; border: 1px solid rgba(168, 85, 247, .3);
  }
  .news-main { flex: 1; min-width: 0; }
  .news-main h3 { font-size: 16px; font-weight: 700; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; transition: color .2s; }
  .news-item:hover .news-main h3 { color: var(--primary); }
  .news-main p { font-size: 13px; color: var(--muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; margin-top: 2px; }
  .news-item time { flex-shrink: 0; font-size: 13px; color: #6481a8; font-variant-numeric: tabular-nums; }
  .empty-tip { text-align: center; color: var(--muted); padding: 40px; background: var(--panel); border-radius: var(--radius); border: 1px dashed var(--line); }
  .steps-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
  .step-card {
    text-align: center; padding: 36px 24px; background: var(--panel);
    border: 1px solid var(--line); border-radius: var(--radius); position: relative;
    transition: all .3s;
  }
  .step-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: rgba(0, 229, 255, .25); }
  .step-num {
    width: 58px; height: 58px; margin: 0 auto 18px; border-radius: 50%;
    background: rgba(0, 229, 255, .09); border: 1px solid rgba(0, 229, 255, .2);
    display: flex; align-items: center; justify-content: center;
    font-size: 22px; font-weight: 900; color: var(--primary); box-shadow: 0 0 20px rgba(0, 229, 255, .1);
  }
  .step-card h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; }
  .step-card p { font-size: 14px; color: var(--muted); line-height: 1.7; }
  .picks-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
  .pick-card {
    background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
    overflow: hidden; transition: all .3s ease; display: flex; flex-direction: column;
  }
  .pick-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: rgba(0, 229, 255, .26); }
  .pick-cover { position: relative; height: 190px; overflow: hidden; }
  .pick-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
  .pick-card:hover .pick-cover img { transform: scale(1.07); }
  .pick-cover .pick-tag {
    position: absolute; top: 14px; left: 14px; z-index: 2;
    background: rgba(10, 14, 23, .72); backdrop-filter: blur(8px);
    border: 1px solid rgba(0, 229, 255, .3); color: var(--primary);
    font-size: 12px; font-weight: 700; padding: 4px 12px; border-radius: 999px;
  }
  .pick-body { padding: 22px 22px 26px; display: flex; flex-direction: column; flex: 1; }
  .pick-body h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; line-height: 1.5; }
  .pick-body p { font-size: 13px; color: var(--muted); line-height: 1.7; flex: 1; }
  .pick-body .pick-more { margin-top: 16px; font-size: 13px; font-weight: 600; color: var(--primary); display: inline-flex; gap: 6px; align-items: center; }
  .faq-list { max-width: 860px; margin: 0 auto; display: flex; flex-direction: column; gap: 14px; }
  .faq-item { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius-sm); overflow: hidden; transition: .3s; }
  .faq-item.open { border-color: rgba(0, 229, 255, .3); box-shadow: 0 0 24px rgba(0, 229, 255, .06); }
  .faq-btn {
    width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 16px;
    background: none; border: none; color: var(--txt); text-align: left;
    font-size: 16px; font-weight: 600; padding: 20px 24px; transition: .25s;
  }
  .faq-btn:hover { color: var(--primary); }
  .faq-icon { flex-shrink: 0; transition: transform .3s; color: var(--primary); font-size: 14px; }
  .faq-item.open .faq-icon { transform: rotate(45deg); }
  .faq-answer { max-height: 0; overflow: hidden; transition: max-height .35s ease, padding .3s; padding: 0 24px; }
  .faq-item.open .faq-answer { max-height: 260px; padding: 0 24px 20px; }
  .faq-answer p { color: var(--muted); font-size: 14px; line-height: 1.8; border-top: 1px solid var(--line); padding-top: 16px; }
  .cta-panel {
    background: linear-gradient(135deg, rgba(0, 229, 255, .08), rgba(168, 85, 247, .08));
    border: 1px solid rgba(0, 229, 255, .2); border-radius: 24px;
    padding: 70px 40px; text-align: center; position: relative; overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, .4);
  }
  .cta-panel::before {
    content: ''; position: absolute; width: 300px; height: 300px; border-radius: 50%;
    background: rgba(0, 229, 255, .12); filter: blur(80px); top: -120px; right: -60px;
  }
  .cta-panel h2 { font-size: clamp(26px, 4vw, 38px); font-weight: 800; position: relative; z-index: 1; }
  .cta-panel p { color: #b6c6e2; max-width: 560px; margin: 14px auto 30px; position: relative; z-index: 1; font-size: 15px; }
  .site-footer { background: #0b101a; border-top: 1px solid var(--line); padding-top: 70px; }
  .footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.2fr; gap: 40px; padding-bottom: 44px; }
  .footer-logo { font-size: 20px; font-weight: 800; display: inline-flex; align-items: center; gap: 10px; margin-bottom: 16px; }
  .footer-logo span { color: var(--primary); }
  .footer-block p { color: var(--muted); font-size: 14px; margin-top: 8px; }
  .footer-block h4 { font-size: 16px; font-weight: 700; margin-bottom: 16px; position: relative; padding-bottom: 10px; }
  .footer-block h4::after { content: ''; position: absolute; left: 0; bottom: 0; width: 28px; height: 2px; background: var(--primary); box-shadow: 0 0 12px rgba(0, 229, 255, .5); }
  .footer-block a { display: block; color: var(--muted); font-size: 14px; padding: 6px 0; transition: .2s; }
  .footer-block a:hover { color: var(--primary); padding-left: 6px; }
  .footer-bottom { border-top: 1px solid var(--line); padding: 22px 0; }
  .footer-bottom-inner { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
  .footer-bottom span { font-size: 13px; color: #6d7f9e; }
  .breadcrumb { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--muted); }
  .breadcrumb a { color: var(--primary); }
  .breadcrumb i { font-size: 10px; }
  .page-banner {
    position: relative; min-height: 360px; display: flex; align-items: center;
    background-size: cover; background-position: center; padding: 100px 0;
  }
  .page-banner::before {
    content: ''; position: absolute; inset: 0;
    background: linear-gradient(180deg, rgba(10, 14, 23, .9) 0%, rgba(10, 14, 23, .7) 68%, var(--bg) 100%);
  }
  .page-banner .banner-inner { position: relative; z-index: 2; max-width: 780px; }
  .page-banner h1 { font-size: clamp(30px, 4.6vw, 48px); font-weight: 900; margin: 16px 0 14px; line-height: 1.2; }
  .page-banner p { color: #c2cde0; font-size: 16px; max-width: 620px; margin-bottom: 18px; }
  .guide-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
  .guide-card {
    background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
    overflow: hidden; transition: all .3s;
  }
  .guide-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: rgba(0, 229, 255, .26); }
  .guide-cover { height: 170px; overflow: hidden; }
  .guide-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
  .guide-card:hover .guide-cover img { transform: scale(1.06); }
  .guide-body { padding: 24px; }
  .guide-body h3 { font-size: 18px; font-weight: 700; margin-bottom: 10px; }
  .guide-body p { font-size: 14px; color: var(--muted); line-height: 1.75; margin-bottom: 14px; }
  .guide-body .tag-row { display: flex; gap: 8px; flex-wrap: wrap; }
  .tag {
    display: inline-flex; align-items: center; gap: 6px; font-size: 12px; font-weight: 600;
    padding: 4px 12px; border-radius: 999px; background: rgba(0, 229, 255, .07);
    border: 1px solid rgba(0, 229, 255, .16); color: #8fdff5;
  }
  .feature-list {
    display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; max-width: 1000px; margin: 0 auto;
  }
  .feature-list-item {
    display: flex; gap: 16px; padding: 24px; background: var(--panel);
    border: 1px solid var(--line); border-radius: var(--radius); transition: .3s;
  }
  .feature-list-item:hover { border-color: rgba(0, 229, 255, .26); box-shadow: var(--shadow); transform: translateY(-3px); }
  .feature-list-item i {
    color: var(--primary); font-size: 20px; width: 46px; height: 46px; flex-shrink: 0;
    border-radius: 12px; background: rgba(0, 229, 255, .08); border: 1px solid rgba(0, 229, 255, .16);
    display: flex; align-items: center; justify-content: center;
  }
  .feature-list-item h4 { font-size: 16px; font-weight: 700; margin-bottom: 4px; }
  .feature-list-item p { font-size: 13px; color: var(--muted); line-height: 1.7; }
  .article-layout { display: grid; grid-template-columns: 1fr 340px; gap: 38px; align-items: start; }
  .article-box {
    background: var(--panel); border: 1px solid var(--line); border-radius: 20px; padding: 44px 48px;
    box-shadow: var(--shadow);
  }
  .article-box h1 { font-size: clamp(26px, 4vw, 36px); line-height: 1.35; font-weight: 800; margin-bottom: 16px; }
  .article-meta { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; border-bottom: 1px solid var(--line); padding-bottom: 20px; margin-bottom: 26px; }
  .article-meta span { font-size: 13px; color: var(--muted); display: inline-flex; align-items: center; gap: 6px; }
  .article-meta .meta-cat { color: #d8b4fe; background: rgba(168, 85, 247, .1); border: 1px solid rgba(168, 85, 247, .25); padding: 3px 12px; border-radius: 999px; font-weight: 600; }
  .article-body { color: #d3ddf0; font-size: 15px; line-height: 2; }
  .article-body p { margin-bottom: 18px; }
  .article-body h2, .article-body h3 { color: var(--txt); font-weight: 700; margin: 28px 0 12px; }
  .article-body ul, .article-body ol { margin: 0 0 18px 22px; }
  .article-body li { margin-bottom: 8px; }
  .article-body a { color: var(--primary); border-bottom: 1px solid rgba(0, 229, 255, .3); }
  .sidebar-card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; margin-bottom: 20px; }
  .sidebar-card h3 { font-size: 17px; font-weight: 700; margin-bottom: 16px; position: relative; padding-bottom: 10px; }
  .sidebar-card h3::after { content: ''; position: absolute; left: 0; bottom: 0; width: 26px; height: 2px; background: var(--primary); box-shadow: 0 0 10px rgba(0, 229, 255, .5); }
  .side-nav { display: flex; flex-direction: column; gap: 8px; }
  .side-nav a { padding: 10px 14px; border-radius: 10px; font-size: 14px; color: var(--muted); border: 1px solid transparent; transition: .2s; }
  .side-nav a:hover, .side-nav a.active { background: rgba(0, 229, 255, .06); border-color: rgba(0, 229, 255, .18); color: var(--primary); }
  .side-card-img { border-radius: 12px; overflow: hidden; margin-bottom: 14px; }
  .side-card-img img { width: 100%; height: 120px; object-fit: cover; }
  .side-card-text { color: var(--muted); font-size: 13px; margin-bottom: 14px; }
  .article-missing { background: var(--panel); border: 1px solid var(--line); border-radius: 20px; padding: 80px 40px; text-align: center; }
  .article-missing i { font-size: 44px; color: var(--primary); margin-bottom: 16px; }
  .article-missing p { font-size: 18px; font-weight: 700; margin-bottom: 22px; }
  .related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
  .related-card {
    background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
    padding: 28px; text-align: center; transition: all .3s;
  }
  .related-card:hover { transform: translateY(-5px); border-color: rgba(0, 229, 255, .3); box-shadow: var(--shadow); }
  .related-card i { font-size: 26px; color: var(--primary); margin-bottom: 12px; }
  .related-card h4 { font-size: 16px; font-weight: 700; margin-bottom: 6px; }
  .related-card p { font-size: 13px; color: var(--muted); }
  @media (max-width: 1024px) {
    .section { padding: 70px 0; }
    .feature-grid { grid-template-columns: repeat(2, 1fr); }
    .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 26px; }
    .stat-card + .stat-card::before { display: none; }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
    .article-layout { grid-template-columns: 1fr; }
    .picks-grid { grid-template-columns: repeat(2, 1fr); }
    .steps-grid { grid-template-columns: repeat(2, 1fr); }
    .guide-grid { grid-template-columns: repeat(2, 1fr); }
    .cat-grid { grid-template-columns: 1fr; }
    .feature-list { grid-template-columns: 1fr; }
    .related-grid { grid-template-columns: 1fr; }
  }
  @media (max-width: 768px) {
    .wrap { padding: 0 18px; }
    .section { padding: 58px 0; }
    .main-nav {
      position: fixed; top: 72px; left: 0; right: 0; z-index: 99;
      flex-direction: column; align-items: stretch; gap: 4px;
      background: rgba(10, 14, 23, .97); padding: 14px 18px 18px;
      border-bottom: 1px solid rgba(0, 229, 255, .14);
      transform: translateY(-12px); opacity: 0; pointer-events: none;
      transition: .3s;
    }
    .main-nav.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
    .nav-link { border-radius: 12px; padding: 13px 16px; }
    .nav-toggle { display: flex; }
    .header-actions .btn-nav { display: none; }
    .hero { min-height: 620px; padding: 80px 0; }
    .stats-bar { margin-top: -40px; }
    .feature-grid, .picks-grid, .steps-grid, .guide-grid, .feature-list { grid-template-columns: 1fr; }
    .article-box { padding: 28px 22px; }
    .footer-grid { grid-template-columns: 1fr; gap: 30px; }
    .footer-bottom-inner { flex-direction: column; text-align: center; }
    .hero-search { max-width: 100%; }
    .hero-actions .btn { width: 100%; }
    .cta-panel { padding: 48px 24px; }
    .news-item { flex-direction: column; align-items: flex-start; gap: 10px; }
    .news-item time { align-self: flex-end; }
    .page-banner { min-height: 300px; padding: 80px 0; }
  }
  @media (max-width: 520px) {
    .brand { font-size: 17px; }
    .stats-grid { grid-template-columns: 1fr; }
    .section-head h2 { font-size: 26px; }
    .hero h1 { font-size: 34px; }
    .hero-sub { font-size: 15px; }
    .cat-content { padding: 24px; }
    .cat-content h3 { font-size: 20px; }
  }
  ::selection { background: rgba(0, 229, 255, .25); }
  .faq-item, .feature-card, .cat-card, .news-item, .pick-card, .guide-card, .related-card { animation: fadeUp .5s ease both; }
  @keyframes fadeUp { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: translateY(0); } }

:root {
    --bg: #0a0e17; --bg2: #0e1524; --panel: #131b2b; --panel2: #1a2438;
    --line: rgba(255,255,255,.08); --txt: #f1f5ff; --muted: #8fa0bf;
    --primary: #00e5ff; --secondary: #a855f7; --accent: #fbbf24;
    --radius: 16px; --radius-sm: 10px; --shadow: 0 10px 40px rgba(0,0,0,.35);
    --glow: 0 0 22px rgba(0,229,255,.25);
  }
  * { margin: 0; padding: 0; box-sizing: border-box; }
  html { scroll-behavior: smooth; }
  body {
    font-family: 'Noto Sans SC','PingFang SC','Microsoft YaHei',system-ui,sans-serif;
    background: var(--bg); color: var(--txt); line-height: 1.75;
    -webkit-font-smoothing: antialiased; overflow-x: hidden;
    background-image: radial-gradient(circle at 10% 6%, rgba(0,229,255,.05), transparent 32%), radial-gradient(circle at 90% 20%, rgba(168,85,247,.06), transparent 30%);
  }
  a { color: inherit; text-decoration: none; }
  img { max-width: 100%; display: block; }
  button { font-family: inherit; cursor: pointer; }
  .wrap { width: 100%; max-width: 1220px; margin: 0 auto; padding: 0 24px; }
  .section { padding: 92px 0; position: relative; }
  .section-alt { background: var(--bg2); }
  .section-head { text-align: center; max-width: 720px; margin: 0 auto 52px; }
  .section-tag {
    display: inline-flex; align-items: center; gap: 8px; font-size: 13px; font-weight: 700;
    letter-spacing: .14em; color: var(--primary); background: rgba(0,229,255,.08);
    border: 1px solid rgba(0,229,255,.22); padding: 6px 16px; border-radius: 999px;
  }
  .section-head h2 { font-size: clamp(28px,4vw,40px); line-height: 1.25; font-weight: 800; margin: 14px 0 14px; }
  .section-head p { color: var(--muted); font-size: 16px; }
  .btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 9px;
    padding: 13px 28px; border-radius: 999px; font-weight: 700; font-size: 15px;
    transition: all .25s ease; border: none; line-height: 1.2; white-space: nowrap;
  }
  .btn-primary { background: linear-gradient(135deg, var(--primary), #22d3ee); color: #061014; box-shadow: 0 8px 30px rgba(0,229,255,.3); }
  .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 38px rgba(0,229,255,.45); }
  .btn-ghost { background: rgba(255,255,255,.04); color: var(--txt); border: 1px solid rgba(255,255,255,.16); backdrop-filter: blur(10px); }
  .btn-ghost:hover { border-color: var(--primary); color: var(--primary); background: rgba(0,229,255,.07); }
  .btn-sm { padding: 10px 20px; font-size: 14px; }
  .site-header {
    position: sticky; top: 0; z-index: 100; background: rgba(10,14,23,.8);
    backdrop-filter: blur(16px); border-bottom: 1px solid rgba(0,229,255,.14);
    box-shadow: 0 6px 30px rgba(0,0,0,.38);
  }
  .header-inner { display: flex; align-items: center; justify-content: space-between; min-height: 72px; gap: 16px; }
  .brand { display: inline-flex; align-items: center; gap: 10px; font-size: 20px; font-weight: 800; color: var(--txt); }
  .brand-dot { width: 10px; height: 10px; border-radius: 50%; background: var(--primary); box-shadow: 0 0 14px var(--primary); flex-shrink: 0; }
  .brand span { color: var(--primary); text-shadow: 0 0 14px rgba(0,229,255,.5); }
  .main-nav { display: flex; align-items: center; gap: 4px; }
  .nav-link { padding: 9px 18px; border-radius: 999px; font-size: 14px; font-weight: 600; color: var(--muted); border: 1px solid transparent; transition: all .25s ease; }
  .nav-link:hover { color: var(--txt); background: rgba(0,229,255,.08); border-color: rgba(0,229,255,.18); }
  .nav-link.active { color: #041217; background: linear-gradient(120deg, var(--primary), #5ee7ff); border-color: transparent; box-shadow: 0 4px 20px rgba(0,229,255,.35); }
  .header-actions { display: flex; align-items: center; gap: 12px; }
  .nav-toggle { display: none; width: 42px; height: 42px; border-radius: 10px; background: rgba(255,255,255,.05); border: 1px solid var(--line); flex-direction: column; align-items: center; justify-content: center; gap: 5px; }
  .nav-toggle span { width: 18px; height: 2px; background: var(--txt); border-radius: 2px; transition: .3s; }
  .page-banner {
    position: relative; min-height: 260px; display: flex; align-items: center;
    background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
    padding: 80px 0;
  }
  .page-banner::before {
    content: ''; position: absolute; inset: 0;
    background: linear-gradient(180deg, rgba(10,14,23,.92) 0%, rgba(10,14,23,.72) 70%, var(--bg) 100%);
  }
  .banner-inner { position: relative; z-index: 2; }
  .breadcrumb { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--muted); margin-bottom: 12px; }
  .breadcrumb a { color: var(--primary); }
  .breadcrumb i { font-size: 10px; }
  .page-banner h1 { font-size: clamp(26px,4vw,42px); font-weight: 900; margin: 10px 0 8px; line-height: 1.3; max-width: 760px; }
  .article-layout { display: grid; grid-template-columns: 1fr 340px; gap: 38px; align-items: start; }
  .article-box { background: var(--panel); border: 1px solid var(--line); border-radius: 20px; padding: 44px 48px; box-shadow: var(--shadow); }
  .article-box h1 { font-size: clamp(26px,4vw,36px); line-height: 1.35; font-weight: 800; margin-bottom: 16px; }
  .article-meta { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; border-bottom: 1px solid var(--line); padding-bottom: 20px; margin-bottom: 26px; }
  .article-meta span { font-size: 13px; color: var(--muted); display: inline-flex; align-items: center; gap: 6px; }
  .article-meta .meta-cat { color: #d8b4fe; background: rgba(168,85,247,.1); border: 1px solid rgba(168,85,247,.25); padding: 3px 12px; border-radius: 999px; font-weight: 600; }
  .article-body { color: #d3ddf0; font-size: 15px; line-height: 2; }
  .article-body p { margin-bottom: 18px; }
  .article-body h2, .article-body h3 { color: var(--txt); font-weight: 700; margin: 28px 0 12px; }
  .article-body ul, .article-body ol { margin: 0 0 18px 22px; }
  .article-body li { margin-bottom: 8px; }
  .article-body a { color: var(--primary); border-bottom: 1px solid rgba(0,229,255,.3); }
  .sidebar-card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; margin-bottom: 20px; }
  .sidebar-card h3 { font-size: 17px; font-weight: 700; margin-bottom: 16px; position: relative; padding-bottom: 10px; }
  .sidebar-card h3::after { content: ''; position: absolute; left: 0; bottom: 0; width: 26px; height: 2px; background: var(--primary); box-shadow: 0 0 10px rgba(0,229,255,.5); }
  .side-nav { display: flex; flex-direction: column; gap: 8px; }
  .side-nav a { padding: 10px 14px; border-radius: 10px; font-size: 14px; color: var(--muted); border: 1px solid transparent; transition: .2s; }
  .side-nav a:hover, .side-nav a.active { background: rgba(0,229,255,.06); border-color: rgba(0,229,255,.18); color: var(--primary); }
  .side-card-img { border-radius: 12px; overflow: hidden; margin-bottom: 14px; }
  .side-card-img img { width: 100%; height: 120px; object-fit: cover; }
  .side-card-text { color: var(--muted); font-size: 13px; margin-bottom: 14px; }
  .article-missing { background: var(--panel); border: 1px solid var(--line); border-radius: 20px; padding: 80px 40px; text-align: center; }
  .article-missing i { font-size: 44px; color: var(--primary); margin-bottom: 16px; }
  .article-missing p { font-size: 18px; font-weight: 700; margin-bottom: 22px; }
  .related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
  .related-card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; text-align: center; transition: all .3s; }
  .related-card:hover { transform: translateY(-5px); border-color: rgba(0,229,255,.3); box-shadow: var(--shadow); }
  .related-card i { font-size: 26px; color: var(--primary); margin-bottom: 12px; }
  .related-card h4 { font-size: 16px; font-weight: 700; margin-bottom: 6px; }
  .related-card p { font-size: 13px; color: var(--muted); }
  .cta-panel { background: linear-gradient(135deg, rgba(0,229,255,.08), rgba(168,85,247,.08)); border: 1px solid rgba(0,229,255,.2); border-radius: 24px; padding: 70px 40px; text-align: center; position: relative; overflow: hidden; box-shadow: 0 20px 60px rgba(0,0,0,.4); }
  .cta-panel::before { content: ''; position: absolute; width: 300px; height: 300px; border-radius: 50%; background: rgba(0,229,255,.12); filter: blur(80px); top: -120px; right: -60px; }
  .cta-panel h2 { font-size: clamp(26px,4vw,38px); font-weight: 800; position: relative; z-index: 1; }
  .cta-panel p { color: #b6c6e2; max-width: 560px; margin: 14px auto 30px; position: relative; z-index: 1; font-size: 15px; }
  .site-footer { background: #0b101a; border-top: 1px solid var(--line); padding-top: 70px; }
  .footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.2fr; gap: 40px; padding-bottom: 44px; }
  .footer-logo { font-size: 20px; font-weight: 800; display: inline-flex; align-items: center; gap: 10px; margin-bottom: 16px; }
  .footer-logo span { color: var(--primary); }
  .footer-block p { color: var(--muted); font-size: 14px; margin-top: 8px; }
  .footer-block h4 { font-size: 16px; font-weight: 700; margin-bottom: 16px; position: relative; padding-bottom: 10px; }
  .footer-block h4::after { content: ''; position: absolute; left: 0; bottom: 0; width: 28px; height: 2px; background: var(--primary); box-shadow: 0 0 12px rgba(0,229,255,.5); }
  .footer-block a { display: block; color: var(--muted); font-size: 14px; padding: 6px 0; transition: .2s; }
  .footer-block a:hover { color: var(--primary); padding-left: 6px; }
  .footer-bottom { border-top: 1px solid var(--line); padding: 22px 0; }
  .footer-bottom-inner { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
  .footer-bottom span { font-size: 13px; color: #6d7f9e; }
  @media (max-width: 1024px) {
    .article-layout { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
    .related-grid { grid-template-columns: 1fr; }
    .section { padding: 70px 0; }
  }
  @media (max-width: 768px) {
    .wrap { padding: 0 18px; }
    .section { padding: 58px 0; }
    .main-nav { position: fixed; top: 72px; left: 0; right: 0; z-index: 99; flex-direction: column; align-items: stretch; gap: 4px; background: rgba(10,14,23,.97); padding: 14px 18px 18px; border-bottom: 1px solid rgba(0,229,255,.14); transform: translateY(-12px); opacity: 0; pointer-events: none; transition: .3s; }
    .main-nav.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
    .nav-link { border-radius: 12px; padding: 13px 16px; }
    .nav-toggle { display: flex; }
    .article-box { padding: 28px 22px; }
    .footer-grid { grid-template-columns: 1fr; gap: 30px; }
    .footer-bottom-inner { flex-direction: column; text-align: center; }
    .page-banner { min-height: 220px; padding: 60px 0; }
    .cta-panel { padding: 48px 24px; }
  }
  @media (max-width: 520px) {
    .brand { font-size: 17px; }
    .section-head h2 { font-size: 26px; }
    .page-banner h1 { font-size: 26px; }
  }

:root {
    --bg: #0a0e17; --bg2: #0e1524; --panel: #131b2b; --panel2: #1a2438;
    --line: rgba(255,255,255,.08); --txt: #f1f5ff; --muted: #8fa0bf;
    --primary: #00e5ff; --secondary: #a855f7; --accent: #fbbf24;
    --radius: 16px; --radius-sm: 10px; --shadow: 0 10px 40px rgba(0,0,0,.35);
    --glow: 0 0 22px rgba(0,229,255,.25);
  }
  * { margin: 0; padding: 0; box-sizing: border-box; }
  html { scroll-behavior: smooth; }
  body {
    font-family: 'Noto Sans SC','PingFang SC','Microsoft YaHei',system-ui,sans-serif;
    background: var(--bg); color: var(--txt); line-height: 1.75;
    -webkit-font-smoothing: antialiased; overflow-x: hidden;
    background-image: radial-gradient(circle at 12% 8%, rgba(0,229,255,.05), transparent 32%), radial-gradient(circle at 88% 16%, rgba(168,85,247,.06), transparent 30%);
  }
  a { color: inherit; text-decoration: none; }
  img { max-width: 100%; display: block; }
  button { font-family: inherit; cursor: pointer; }
  .wrap { width: 100%; max-width: 1220px; margin: 0 auto; padding: 0 24px; }
  .section { padding: 92px 0; position: relative; }
  .section-alt { background: var(--bg2); }
  .section-head { text-align: center; max-width: 720px; margin: 0 auto 52px; }
  .section-tag {
    display: inline-flex; align-items: center; gap: 8px; font-size: 13px; font-weight: 700;
    letter-spacing: .14em; color: var(--primary); background: rgba(0,229,255,.08);
    border: 1px solid rgba(0,229,255,.22); padding: 6px 16px; border-radius: 999px;
  }
  .section-head h2 { font-size: clamp(28px,4vw,40px); line-height: 1.25; font-weight: 800; margin: 14px 0 14px; }
  .section-head p { color: var(--muted); font-size: 16px; }
  .btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 9px;
    padding: 13px 28px; border-radius: 999px; font-weight: 700; font-size: 15px;
    transition: all .25s ease; border: none; line-height: 1.2; white-space: nowrap;
  }
  .btn-primary { background: linear-gradient(135deg, var(--primary), #22d3ee); color: #061014; box-shadow: 0 8px 30px rgba(0,229,255,.3); }
  .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 38px rgba(0,229,255,.45); }
  .btn-ghost { background: rgba(255,255,255,.04); color: var(--txt); border: 1px solid rgba(255,255,255,.16); backdrop-filter: blur(10px); }
  .btn-ghost:hover { border-color: var(--primary); color: var(--primary); background: rgba(0,229,255,.07); }
  .btn-lg { padding: 16px 36px; font-size: 16px; }
  .site-header {
    position: sticky; top: 0; z-index: 100; background: rgba(10,14,23,.8);
    backdrop-filter: blur(16px); border-bottom: 1px solid rgba(0,229,255,.14);
    box-shadow: 0 6px 30px rgba(0,0,0,.38);
  }
  .header-inner { display: flex; align-items: center; justify-content: space-between; min-height: 72px; gap: 16px; }
  .brand { display: inline-flex; align-items: center; gap: 10px; font-size: 20px; font-weight: 800; color: var(--txt); }
  .brand-dot { width: 10px; height: 10px; border-radius: 50%; background: var(--primary); box-shadow: 0 0 14px var(--primary); flex-shrink: 0; }
  .brand span { color: var(--primary); text-shadow: 0 0 14px rgba(0,229,255,.5); }
  .main-nav { display: flex; align-items: center; gap: 4px; }
  .nav-link { padding: 9px 18px; border-radius: 999px; font-size: 14px; font-weight: 600; color: var(--muted); border: 1px solid transparent; transition: all .25s ease; }
  .nav-link:hover { color: var(--txt); background: rgba(0,229,255,.08); border-color: rgba(0,229,255,.18); }
  .nav-link.active { color: #041217; background: linear-gradient(120deg, var(--primary), #5ee7ff); border-color: transparent; box-shadow: 0 4px 20px rgba(0,229,255,.35); }
  .header-actions { display: flex; align-items: center; gap: 12px; }
  .nav-toggle { display: none; width: 42px; height: 42px; border-radius: 10px; background: rgba(255,255,255,.05); border: 1px solid var(--line); flex-direction: column; align-items: center; justify-content: center; gap: 5px; }
  .nav-toggle span { width: 18px; height: 2px; background: var(--txt); border-radius: 2px; transition: .3s; }
  .page-banner {
    position: relative; min-height: 380px; display: flex; align-items: center;
    background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
    padding: 100px 0;
  }
  .page-banner::before {
    content: ''; position: absolute; inset: 0;
    background: linear-gradient(180deg, rgba(10,14,23,.9) 0%, rgba(10,14,23,.72) 70%, var(--bg) 100%);
  }
  .banner-inner { position: relative; z-index: 2; max-width: 780px; }
  .breadcrumb { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--muted); margin-bottom: 12px; }
  .breadcrumb a { color: var(--primary); }
  .breadcrumb i { font-size: 10px; }
  .hero-badge {
    display: inline-flex; align-items: center; gap: 9px;
    font-size: 13px; font-weight: 700; letter-spacing: .1em; color: var(--primary);
    background: rgba(0,229,255,.08); border: 1px solid rgba(0,229,255,.25);
    padding: 8px 18px; border-radius: 999px; backdrop-filter: blur(6px);
  }
  .hero-badge .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--primary); box-shadow: 0 0 12px var(--primary); }
  .page-banner h1 { font-size: clamp(30px,4.6vw,48px); font-weight: 900; margin: 16px 0 14px; line-height: 1.2; }
  .page-banner p { color: #c2cde0; font-size: 16px; max-width: 620px; margin-bottom: 18px; }
  .guide-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
  .guide-card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; transition: all .3s; }
  .guide-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: rgba(0,229,255,.26); }
  .guide-cover { height: 170px; overflow: hidden; }
  .guide-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
  .guide-card:hover .guide-cover img { transform: scale(1.06); }
  .guide-body { padding: 24px; }
  .guide-body h3 { font-size: 18px; font-weight: 700; margin-bottom: 10px; }
  .guide-body p { font-size: 14px; color: var(--muted); line-height: 1.75; margin-bottom: 14px; }
  .guide-body .tag-row { display: flex; gap: 8px; flex-wrap: wrap; }
  .tag {
    display: inline-flex; align-items: center; gap: 6px; font-size: 12px; font-weight: 600;
    padding: 4px 12px; border-radius: 999px; background: rgba(0,229,255,.07);
    border: 1px solid rgba(0,229,255,.16); color: #8fdff5;
  }
  .steps-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 18px; }
  .step-card {
    text-align: center; padding: 32px 20px; background: var(--panel);
    border: 1px solid var(--line); border-radius: var(--radius); position: relative;
    transition: all .3s;
  }
  .step-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: rgba(0,229,255,.25); }
  .step-num { width: 52px; height: 52px; margin: 0 auto 16px; border-radius: 50%; background: rgba(0,229,255,.09); border: 1px solid rgba(0,229,255,.2); display: flex; align-items: center; justify-content: center; font-size: 20px; font-weight: 900; color: var(--primary); box-shadow: 0 0 20px rgba(0,229,255,.1); }
  .step-card h3 { font-size: 15px; font-weight: 700; margin-bottom: 6px; }
  .step-card p { font-size: 13px; color: var(--muted); line-height: 1.7; }
  .faq-list { max-width: 860px; margin: 0 auto; display: flex; flex-direction: column; gap: 14px; }
  .faq-item { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius-sm); overflow: hidden; transition: .3s; }
  .faq-item.open { border-color: rgba(0,229,255,.3); box-shadow: 0 0 24px rgba(0,229,255,.06); }
  .faq-btn { width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 16px; background: none; border: none; color: var(--txt); text-align: left; font-size: 16px; font-weight: 600; padding: 20px 24px; transition: .25s; }
  .faq-btn:hover { color: var(--primary); }
  .faq-icon { flex-shrink: 0; transition: transform .3s; color: var(--primary); font-size: 14px; }
  .faq-item.open .faq-icon { transform: rotate(45deg); }
  .faq-answer { max-height: 0; overflow: hidden; transition: max-height .35s ease, padding .3s; padding: 0 24px; }
  .faq-item.open .faq-answer { max-height: 260px; padding: 0 24px 20px; }
  .faq-answer p { color: var(--muted); font-size: 14px; line-height: 1.8; border-top: 1px solid var(--line); padding-top: 16px; }
  .cta-panel { background: linear-gradient(135deg, rgba(0,229,255,.08), rgba(168,85,247,.08)); border: 1px solid rgba(0,229,255,.2); border-radius: 24px; padding: 70px 40px; text-align: center; position: relative; overflow: hidden; box-shadow: 0 20px 60px rgba(0,0,0,.4); }
  .cta-panel::before { content: ''; position: absolute; width: 300px; height: 300px; border-radius: 50%; background: rgba(0,229,255,.12); filter: blur(80px); top: -120px; right: -60px; }
  .cta-panel h2 { font-size: clamp(26px,4vw,38px); font-weight: 800; position: relative; z-index: 1; }
  .cta-panel p { color: #b6c6e2; max-width: 560px; margin: 14px auto 30px; position: relative; z-index: 1; font-size: 15px; }
  .site-footer { background: #0b101a; border-top: 1px solid var(--line); padding-top: 70px; }
  .footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.2fr; gap: 40px; padding-bottom: 44px; }
  .footer-logo { font-size: 20px; font-weight: 800; display: inline-flex; align-items: center; gap: 10px; margin-bottom: 16px; }
  .footer-logo span { color: var(--primary); }
  .footer-block p { color: var(--muted); font-size: 14px; margin-top: 8px; }
  .footer-block h4 { font-size: 16px; font-weight: 700; margin-bottom: 16px; position: relative; padding-bottom: 10px; }
  .footer-block h4::after { content: ''; position: absolute; left: 0; bottom: 0; width: 28px; height: 2px; background: var(--primary); box-shadow: 0 0 12px rgba(0,229,255,.5); }
  .footer-block a { display: block; color: var(--muted); font-size: 14px; padding: 6px 0; transition: .2s; }
  .footer-block a:hover { color: var(--primary); padding-left: 6px; }
  .footer-bottom { border-top: 1px solid var(--line); padding: 22px 0; }
  .footer-bottom-inner { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
  .footer-bottom span { font-size: 13px; color: #6d7f9e; }
  @media (max-width: 1024px) {
    .section { padding: 70px 0; }
    .guide-grid { grid-template-columns: repeat(2, 1fr); }
    .steps-grid { grid-template-columns: repeat(3, 1fr); }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
  }
  @media (max-width: 768px) {
    .wrap { padding: 0 18px; }
    .section { padding: 58px 0; }
    .main-nav { position: fixed; top: 72px; left: 0; right: 0; z-index: 99; flex-direction: column; align-items: stretch; gap: 4px; background: rgba(10,14,23,.97); padding: 14px 18px 18px; border-bottom: 1px solid rgba(0,229,255,.14); transform: translateY(-12px); opacity: 0; pointer-events: none; transition: .3s; }
    .main-nav.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
    .nav-link { border-radius: 12px; padding: 13px 16px; }
    .nav-toggle { display: flex; }
    .guide-grid { grid-template-columns: 1fr; }
    .steps-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr; gap: 30px; }
    .footer-bottom-inner { flex-direction: column; text-align: center; }
    .page-banner { min-height: 320px; padding: 80px 0; }
    .cta-panel { padding: 48px 24px; }
  }
  @media (max-width: 520px) {
    .brand { font-size: 17px; }
    .section-head h2 { font-size: 26px; }
    .page-banner h1 { font-size: 30px; }
    .steps-grid { grid-template-columns: 1fr; }
  }

:root {
    --bg: #0a0e17; --bg2: #0e1524; --panel: #131b2b; --panel2: #1a2438;
    --line: rgba(255,255,255,.08); --txt: #f1f5ff; --muted: #8fa0bf;
    --primary: #00e5ff; --secondary: #a855f7; --accent: #fbbf24;
    --radius: 16px; --radius-sm: 10px; --shadow: 0 10px 40px rgba(0,0,0,.35);
    --glow: 0 0 22px rgba(0,229,255,.25);
  }
  * { margin: 0; padding: 0; box-sizing: border-box; }
  html { scroll-behavior: smooth; }
  body {
    font-family: 'Noto Sans SC','PingFang SC','Microsoft YaHei',system-ui,sans-serif;
    background: var(--bg); color: var(--txt); line-height: 1.75;
    -webkit-font-smoothing: antialiased; overflow-x: hidden;
    background-image: radial-gradient(circle at 10% 8%, rgba(0,229,255,.05), transparent 32%), radial-gradient(circle at 90% 18%, rgba(168,85,247,.07), transparent 30%);
  }
  a { color: inherit; text-decoration: none; }
  img { max-width: 100%; display: block; }
  button { font-family: inherit; cursor: pointer; }
  .wrap { width: 100%; max-width: 1220px; margin: 0 auto; padding: 0 24px; }
  .section { padding: 92px 0; position: relative; }
  .section-alt { background: var(--bg2); }
  .section-head { text-align: center; max-width: 720px; margin: 0 auto 52px; }
  .section-tag {
    display: inline-flex; align-items: center; gap: 8px; font-size: 13px; font-weight: 700;
    letter-spacing: .14em; color: var(--primary); background: rgba(0,229,255,.08);
    border: 1px solid rgba(0,229,255,.22); padding: 6px 16px; border-radius: 999px;
  }
  .section-head h2 { font-size: clamp(28px,4vw,40px); line-height: 1.25; font-weight: 800; margin: 14px 0 14px; }
  .section-head p { color: var(--muted); font-size: 16px; }
  .btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 9px;
    padding: 13px 28px; border-radius: 999px; font-weight: 700; font-size: 15px;
    transition: all .25s ease; border: none; line-height: 1.2; white-space: nowrap;
  }
  .btn-primary { background: linear-gradient(135deg, var(--primary), #22d3ee); color: #061014; box-shadow: 0 8px 30px rgba(0,229,255,.3); }
  .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 38px rgba(0,229,255,.45); }
  .btn-ghost { background: rgba(255,255,255,.04); color: var(--txt); border: 1px solid rgba(255,255,255,.16); backdrop-filter: blur(10px); }
  .btn-ghost:hover { border-color: var(--primary); color: var(--primary); background: rgba(0,229,255,.07); }
  .btn-lg { padding: 16px 36px; font-size: 16px; }
  .site-header {
    position: sticky; top: 0; z-index: 100; background: rgba(10,14,23,.8);
    backdrop-filter: blur(16px); border-bottom: 1px solid rgba(0,229,255,.14);
    box-shadow: 0 6px 30px rgba(0,0,0,.38);
  }
  .header-inner { display: flex; align-items: center; justify-content: space-between; min-height: 72px; gap: 16px; }
  .brand { display: inline-flex; align-items: center; gap: 10px; font-size: 20px; font-weight: 800; color: var(--txt); }
  .brand-dot { width: 10px; height: 10px; border-radius: 50%; background: var(--primary); box-shadow: 0 0 14px var(--primary); flex-shrink: 0; }
  .brand span { color: var(--primary); text-shadow: 0 0 14px rgba(0,229,255,.5); }
  .main-nav { display: flex; align-items: center; gap: 4px; }
  .nav-link { padding: 9px 18px; border-radius: 999px; font-size: 14px; font-weight: 600; color: var(--muted); border: 1px solid transparent; transition: all .25s ease; }
  .nav-link:hover { color: var(--txt); background: rgba(0,229,255,.08); border-color: rgba(0,229,255,.18); }
  .nav-link.active { color: #041217; background: linear-gradient(120deg, var(--primary), #5ee7ff); border-color: transparent; box-shadow: 0 4px 20px rgba(0,229,255,.35); }
  .header-actions { display: flex; align-items: center; gap: 12px; }
  .nav-toggle { display: none; width: 42px; height: 42px; border-radius: 10px; background: rgba(255,255,255,.05); border: 1px solid var(--line); flex-direction: column; align-items: center; justify-content: center; gap: 5px; }
  .nav-toggle span { width: 18px; height: 2px; background: var(--txt); border-radius: 2px; transition: .3s; }
  .page-banner {
    position: relative; min-height: 380px; display: flex; align-items: center;
    background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
    padding: 100px 0;
  }
  .page-banner::before {
    content: ''; position: absolute; inset: 0;
    background: linear-gradient(180deg, rgba(10,14,23,.9) 0%, rgba(10,14,23,.72) 70%, var(--bg) 100%);
  }
  .banner-inner { position: relative; z-index: 2; max-width: 780px; }
  .breadcrumb { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--muted); margin-bottom: 12px; }
  .breadcrumb a { color: var(--primary); }
  .breadcrumb i { font-size: 10px; }
  .hero-badge {
    display: inline-flex; align-items: center; gap: 9px;
    font-size: 13px; font-weight: 700; letter-spacing: .1em; color: var(--primary);
    background: rgba(0,229,255,.08); border: 1px solid rgba(0,229,255,.25);
    padding: 8px 18px; border-radius: 999px; backdrop-filter: blur(6px);
  }
  .hero-badge .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--primary); box-shadow: 0 0 12px var(--primary); }
  .page-banner h1 { font-size: clamp(30px,4.6vw,48px); font-weight: 900; margin: 16px 0 14px; line-height: 1.2; }
  .page-banner p { color: #c2cde0; font-size: 16px; max-width: 620px; margin-bottom: 18px; }
  .picks-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
  .pick-card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; transition: all .3s ease; display: flex; flex-direction: column; }
  .pick-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: rgba(0,229,255,.26); }
  .pick-cover { position: relative; height: 190px; overflow: hidden; }
  .pick-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
  .pick-card:hover .pick-cover img { transform: scale(1.07); }
  .pick-cover .pick-tag { position: absolute; top: 14px; left: 14px; z-index: 2; background: rgba(10,14,23,.72); backdrop-filter: blur(8px); border: 1px solid rgba(0,229,255,.3); color: var(--primary); font-size: 12px; font-weight: 700; padding: 4px 12px; border-radius: 999px; }
  .pick-body { padding: 22px 22px 26px; display: flex; flex-direction: column; flex: 1; }
  .pick-body h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; line-height: 1.5; }
  .pick-body p { font-size: 13px; color: var(--muted); line-height: 1.7; flex: 1; }
  .pick-body .pick-more { margin-top: 16px; font-size: 13px; font-weight: 600; color: var(--primary); display: inline-flex; gap: 6px; align-items: center; }
  .feature-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; max-width: 1000px; margin: 0 auto; }
  .feature-list-item { display: flex; gap: 16px; padding: 24px; background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); transition: .3s; }
  .feature-list-item:hover { border-color: rgba(0,229,255,.26); box-shadow: var(--shadow); transform: translateY(-3px); }
  .feature-list-item i { color: var(--primary); font-size: 20px; width: 46px; height: 46px; flex-shrink: 0; border-radius: 12px; background: rgba(0,229,255,.08); border: 1px solid rgba(0,229,255,.16); display: flex; align-items: center; justify-content: center; }
  .feature-list-item h4 { font-size: 16px; font-weight: 700; margin-bottom: 4px; }
  .feature-list-item p { font-size: 13px; color: var(--muted); line-height: 1.7; }
  .game-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
  .game-card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; text-align: center; transition: all .3s; }
  .game-card:hover { transform: translateY(-5px); border-color: rgba(0,229,255,.3); box-shadow: var(--shadow); }
  .game-card img { width: 100%; height: 120px; object-fit: cover; border-radius: 12px; margin-bottom: 14px; }
  .game-card h4 { font-size: 15px; font-weight: 700; }
  .game-card span { font-size: 12px; color: var(--primary); }
  .faq-list { max-width: 860px; margin: 0 auto; display: flex; flex-direction: column; gap: 14px; }
  .faq-item { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius-sm); overflow: hidden; transition: .3s; }
  .faq-item.open { border-color: rgba(0,229,255,.3); box-shadow: 0 0 24px rgba(0,229,255,.06); }
  .faq-btn { width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 16px; background: none; border: none; color: var(--txt); text-align: left; font-size: 16px; font-weight: 600; padding: 20px 24px; transition: .25s; }
  .faq-btn:hover { color: var(--primary); }
  .faq-icon { flex-shrink: 0; transition: transform .3s; color: var(--primary); font-size: 14px; }
  .faq-item.open .faq-icon { transform: rotate(45deg); }
  .faq-answer { max-height: 0; overflow: hidden; transition: max-height .35s ease, padding .3s; padding: 0 24px; }
  .faq-item.open .faq-answer { max-height: 260px; padding: 0 24px 20px; }
  .faq-answer p { color: var(--muted); font-size: 14px; line-height: 1.8; border-top: 1px solid var(--line); padding-top: 16px; }
  .cta-panel { background: linear-gradient(135deg, rgba(0,229,255,.08), rgba(168,85,247,.08)); border: 1px solid rgba(0,229,255,.2); border-radius: 24px; padding: 70px 40px; text-align: center; position: relative; overflow: hidden; box-shadow: 0 20px 60px rgba(0,0,0,.4); }
  .cta-panel::before { content: ''; position: absolute; width: 300px; height: 300px; border-radius: 50%; background: rgba(0,229,255,.12); filter: blur(80px); top: -120px; right: -60px; }
  .cta-panel h2 { font-size: clamp(26px,4vw,38px); font-weight: 800; position: relative; z-index: 1; }
  .cta-panel p { color: #b6c6e2; max-width: 560px; margin: 14px auto 30px; position: relative; z-index: 1; font-size: 15px; }
  .site-footer { background: #0b101a; border-top: 1px solid var(--line); padding-top: 70px; }
  .footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.2fr; gap: 40px; padding-bottom: 44px; }
  .footer-logo { font-size: 20px; font-weight: 800; display: inline-flex; align-items: center; gap: 10px; margin-bottom: 16px; }
  .footer-logo span { color: var(--primary); }
  .footer-block p { color: var(--muted); font-size: 14px; margin-top: 8px; }
  .footer-block h4 { font-size: 16px; font-weight: 700; margin-bottom: 16px; position: relative; padding-bottom: 10px; }
  .footer-block h4::after { content: ''; position: absolute; left: 0; bottom: 0; width: 28px; height: 2px; background: var(--primary); box-shadow: 0 0 12px rgba(0,229,255,.5); }
  .footer-block a { display: block; color: var(--muted); font-size: 14px; padding: 6px 0; transition: .2s; }
  .footer-block a:hover { color: var(--primary); padding-left: 6px; }
  .footer-bottom { border-top: 1px solid var(--line); padding: 22px 0; }
  .footer-bottom-inner { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
  .footer-bottom span { font-size: 13px; color: #6d7f9e; }
  @media (max-width: 1024px) {
    .section { padding: 70px 0; }
    .picks-grid { grid-template-columns: repeat(2, 1fr); }
    .game-grid { grid-template-columns: repeat(2, 1fr); }
    .feature-list { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
  }
  @media (max-width: 768px) {
    .wrap { padding: 0 18px; }
    .section { padding: 58px 0; }
    .main-nav { position: fixed; top: 72px; left: 0; right: 0; z-index: 99; flex-direction: column; align-items: stretch; gap: 4px; background: rgba(10,14,23,.97); padding: 14px 18px 18px; border-bottom: 1px solid rgba(0,229,255,.14); transform: translateY(-12px); opacity: 0; pointer-events: none; transition: .3s; }
    .main-nav.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
    .nav-link { border-radius: 12px; padding: 13px 16px; }
    .nav-toggle { display: flex; }
    .picks-grid, .game-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; gap: 30px; }
    .footer-bottom-inner { flex-direction: column; text-align: center; }
    .page-banner { min-height: 320px; padding: 80px 0; }
    .cta-panel { padding: 48px 24px; }
  }
  @media (max-width: 520px) {
    .brand { font-size: 17px; }
    .section-head h2 { font-size: 26px; }
    .page-banner h1 { font-size: 30px; }
  }

/* roulang page: category1 */
:root {
    --bg: #0b0f1a;
    --surface: #121a2b;
    --surface-2: #182338;
    --primary: #00e0ff;
    --accent: #ffb800;
    --text: #eaf2ff;
    --muted: #8fa3bf;
    --border: rgba(0, 224, 255, 0.2);
    --radius: 18px;
    --shadow: 0 20px 60px rgba(0, 0, 0, 0.45);
  }

  * {
    box-sizing: border-box;
  }

  html {
    scroll-behavior: smooth;
  }

  body {
    margin: 0;
    font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
  }

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

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

  button,
  input,
  select,
  textarea {
    font: inherit;
  }

  .wrap {
    max-width: 1220px;
    margin: 0 auto;
    padding-left: 22px;
    padding-right: 22px;
  }

  /* Header */
  .site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(9, 13, 25, 0.88);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(0, 224, 255, 0.18);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
  }

  .header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
    gap: 20px;
  }

  .brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 1.24rem;
    font-weight: 800;
    letter-spacing: 0.02em;
    color: #fff;
  }

  .brand span,
  .footer-logo span {
    color: var(--primary);
  }

  .brand-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--primary);
    box-shadow: 0 0 12px var(--primary);
    display: inline-block;
    flex-shrink: 0;
  }

  .main-nav {
    display: flex;
    gap: 8px;
  }

  .nav-link {
    padding: 9px 16px;
    border-radius: 999px;
    font-weight: 600;
    color: var(--muted);
    transition: all 0.25s;
    font-size: 0.95rem;
  }

  .nav-link:hover {
    color: #fff;
    background: rgba(0, 224, 255, 0.12);
  }

  .nav-link.active {
    color: #041018;
    background: linear-gradient(135deg, var(--primary), #53f3ff);
    box-shadow: 0 0 18px rgba(0, 224, 255, 0.45);
  }

  .header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
  }

  .nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: rgba(255, 255, 255, 0.08);
    border: 0;
    width: 42px;
    height: 42px;
    border-radius: 12px;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background 0.25s;
  }

  .nav-toggle:hover {
    background: rgba(255, 255, 255, 0.14);
  }

  .nav-toggle span {
    width: 20px;
    height: 2px;
    background: #fff;
    border-radius: 2px;
    display: block;
    transition: all 0.25s;
  }

  /* Buttons */
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border-radius: 999px;
    font-weight: 700;
    transition: all 0.25s;
    cursor: pointer;
    border: 0;
  }

  .btn-primary {
    background: linear-gradient(135deg, #00e0ff, #00b4ff);
    color: #041018;
    box-shadow: 0 8px 24px rgba(0, 224, 255, 0.25);
  }

  .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 30px rgba(0, 224, 255, 0.4);
  }

  .btn-outline {
    background: transparent;
    color: var(--primary);
    border: 1px solid rgba(0, 224, 255, 0.5);
  }

  .btn-outline:hover {
    background: rgba(0, 224, 255, 0.1);
  }

  .btn-sm {
    padding: 9px 18px;
    font-size: 0.9rem;
  }

  .btn-lg {
    padding: 14px 34px;
    font-size: 1.05rem;
  }

  .btn:focus-visible,
  .nav-link:focus-visible,
  a:focus-visible {
    outline: 3px solid rgba(255, 184, 0, 0.6);
    outline-offset: 2px;
  }

  /* Hero / Banner */
  .page-hero {
    position: relative;
    padding: 100px 0 90px;
    background-size: cover;
    background-position: center;
  }

  .page-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(6, 10, 22, 0.94), rgba(10, 20, 40, 0.78));
  }

  .page-hero .wrap {
    position: relative;
    z-index: 1;
  }

  .hero-badge {
    display: inline-flex;
    gap: 8px;
    align-items: center;
    background: rgba(0, 224, 255, 0.12);
    border: 1px solid rgba(0, 224, 255, 0.35);
    color: var(--primary);
    padding: 7px 16px;
    border-radius: 999px;
    font-size: 0.85rem;
    font-weight: 600;
  }

  .page-hero h1 {
    font-size: clamp(1.9rem, 4.2vw, 3.4rem);
    line-height: 1.2;
    font-weight: 900;
    margin: 20px 0 14px;
  }

  .page-hero .lead {
    color: var(--muted);
    font-size: 1.1rem;
    max-width: 660px;
  }

  .hero-stats {
    display: flex;
    gap: 20px;
    margin-top: 26px;
    flex-wrap: wrap;
  }

  .hero-stat {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 14px 18px;
    border-radius: 16px;
  }

  .hero-stat strong {
    font-size: 1.5rem;
    color: #fff;
    display: block;
    line-height: 1.3;
  }

  .hero-stat span {
    font-size: 0.85rem;
    color: var(--muted);
  }

  .hero-actions {
    display: flex;
    gap: 14px;
    margin-top: 28px;
    flex-wrap: wrap;
  }

  .breadcrumb {
    display: flex;
    gap: 8px;
    font-size: 0.9rem;
    color: var(--muted);
    margin-bottom: 18px;
    flex-wrap: wrap;
  }

  .breadcrumb a {
    color: var(--muted);
    transition: color 0.2s;
  }

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

  .breadcrumb .sep {
    opacity: 0.5;
  }

  /* Sections */
  .section {
    padding: 90px 0;
  }

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

  .section-head {
    max-width: 720px;
    margin-bottom: 46px;
  }

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

  .eyebrow {
    color: var(--primary);
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    display: block;
    margin-bottom: 10px;
  }

  .section-title {
    font-size: clamp(1.6rem, 3vw, 2.4rem);
    font-weight: 800;
    line-height: 1.25;
  }

  .section-desc {
    color: var(--muted);
    margin-top: 12px;
  }

  /* Cards */
  .card {
    background: var(--surface);
    border: 1px solid rgba(255, 255, 255, 0.07);
    border-radius: var(--radius);
    padding: 24px;
    transition: all 0.3s;
  }

  .card:hover {
    transform: translateY(-6px);
    border-color: rgba(0, 224, 255, 0.35);
    box-shadow: var(--shadow);
  }

  .card-icon {
    width: 52px;
    height: 52px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    background: rgba(0, 224, 255, 0.12);
    color: var(--primary);
    margin-bottom: 16px;
  }

  .card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 8px;
  }

  .card p {
    color: var(--muted);
    font-size: 0.95rem;
    margin: 0;
  }

  .card-image {
    border-radius: 18px;
    overflow: hidden;
    position: relative;
  }

  .card-image img {
    width: 100%;
    height: 180px;
    object-fit: cover;
  }

  .card-tag {
    position: absolute;
    top: 12px;
    left: 12px;
    background: rgba(6, 10, 22, 0.72);
    backdrop-filter: blur(8px);
    color: var(--primary);
    border: 1px solid rgba(0, 224, 255, 0.35);
    font-size: 0.75rem;
    padding: 5px 10px;
    border-radius: 999px;
  }

  .step-card {
    position: relative;
  }

  .step-card .step-num {
    font-size: 2rem;
    font-weight: 900;
    color: rgba(0, 224, 255, 0.25);
    position: absolute;
    top: 16px;
    right: 20px;
    line-height: 1;
  }

  .card-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: 16px;
    font-weight: 700;
    font-size: 0.9rem;
    color: var(--primary);
    transition: gap 0.25s;
  }

  .card-link:hover {
    gap: 12px;
  }

  /* Checklist */
  .check-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    gap: 14px;
  }

  .check-list li {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.07);
    border-radius: 14px;
    padding: 14px 16px;
    display: flex;
    gap: 12px;
    align-items: flex-start;
    color: #dce6f5;
  }

  .check-list i {
    color: var(--primary);
    margin-top: 4px;
  }

  /* Stats */
  .stats-band {
    padding: 50px 20px;
    border-radius: 24px;
    background: linear-gradient(135deg, rgba(0, 224, 255, 0.1), rgba(17, 29, 52, 0.9));
    border: 1px solid rgba(0, 224, 255, 0.2);
  }

  .stat-box {
    text-align: center;
  }

  .stat-box strong {
    font-size: 2.2rem;
    font-weight: 900;
    color: #fff;
    display: block;
    line-height: 1.3;
  }

  .stat-box span {
    color: var(--muted);
  }

  /* FAQ */
  .faq-list {
    display: grid;
    gap: 14px;
  }

  .faq-item {
    background: var(--surface);
    border: 1px solid rgba(255, 255, 255, 0.07);
    border-radius: 16px;
    overflow: hidden;
  }

  .faq-item summary {
    list-style: none;
    padding: 20px 22px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 700;
    gap: 14px;
    transition: background 0.25s;
  }

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

  .faq-item summary:hover {
    background: rgba(0, 224, 255, 0.05);
  }

  .faq-item summary::after {
    content: '+';
    transition: transform 0.25s;
    color: var(--primary);
    font-size: 1.4rem;
    line-height: 1;
  }

  .faq-item[open] summary::after {
    transform: rotate(45deg);
  }

  .faq-answer {
    padding: 0 22px 20px;
    color: var(--muted);
    margin: 0;
  }

  /* CTA */
  .cta-band {
    position: relative;
    overflow: hidden;
    background-size: cover;
    background-position: center;
    border-radius: 26px;
    padding: 64px 50px;
    text-align: center;
  }

  .cta-band::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(6, 10, 22, 0.88);
  }

  .cta-band > * {
    position: relative;
    z-index: 1;
  }

  .cta-band h2 {
    font-size: clamp(1.7rem, 3vw, 2.3rem);
    font-weight: 900;
    margin: 0 0 12px;
  }

  .cta-band p {
    color: var(--muted);
    max-width: 560px;
    margin: 0 auto 24px;
  }

  /* Footer */
  .site-footer {
    background: #070b14;
    border-top: 1px solid rgba(255, 255, 255, 0.07);
    padding: 64px 0 0;
    margin-top: 40px;
  }

  .footer-grid {
    display: grid;
    grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
    gap: 36px;
    padding-bottom: 42px;
  }

  .footer-brand p {
    color: var(--muted);
    font-size: 0.93rem;
    margin-top: 14px;
    max-width: 280px;
  }

  .footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.15rem;
    font-weight: 800;
    color: #fff;
  }

  .footer-block h4 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 16px;
    color: #dce6f5;
  }

  .footer-block a,
  .footer-block p {
    display: block;
    color: var(--muted);
    font-size: 0.92rem;
    margin-bottom: 10px;
    transition: color 0.2s;
  }

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

  .footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    padding: 20px 0;
  }

  .footer-bottom-inner {
    display: flex;
    justify-content: space-between;
    gap: 10px;
    color: var(--muted);
    font-size: 0.85rem;
    flex-wrap: wrap;
  }

  /* Responsive */
  @media (max-width: 1024px) {
    .footer-grid {
      grid-template-columns: 1fr 1fr;
    }

    .section {
      padding: 72px 0;
    }
  }

  @media (max-width: 768px) {
    .header-inner {
      height: 64px;
    }

    .main-nav {
      position: absolute;
      top: 64px;
      left: 0;
      right: 0;
      background: #0c1120;
      border-bottom: 1px solid rgba(0, 224, 255, 0.2);
      padding: 16px 22px;
      flex-direction: column;
      align-items: stretch;
      gap: 6px;
      display: none;
    }

    .main-nav.open {
      display: flex;
    }

    .header-actions .btn-primary {
      display: none;
    }

    .nav-toggle {
      display: flex;
    }

    .hero-stats {
      flex-direction: column;
    }

    .page-hero {
      padding: 70px 0;
    }

    .cta-band {
      padding: 44px 24px;
    }

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

  @media (max-width: 520px) {
    .brand {
      font-size: 1.05rem;
    }

    .section {
      padding: 56px 0;
    }
  }

/* roulang page: article */
/* ===== 设计变量 ===== */
:root {
  --night: #0b0f1a;
  --panel: #111827;
  --card: #151e2e;
  --neon: #00e0ff;
  --neonpurple: #8b5cf6;
  --text-main: #f1f5f9;
  --text-muted: #94a3b8;
  --border-glass: rgba(0, 224, 255, 0.14);
  --radius-lg: 18px;
  --radius-md: 12px;
  --shadow-card: 0 10px 40px rgba(0, 0, 0, 0.4);
}

/* ===== 基础 reset ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  color-scheme: dark;
}
body {
  font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
  background: var(--night);
  color: var(--text-main);
  line-height: 1.7;
}
img {
  max-width: 100%;
  display: block;
}
a {
  text-decoration: none;
  color: inherit;
  transition: all 0.3s ease;
}
button {
  cursor: pointer;
}
.wrap {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== 顶部导航 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(11, 15, 26, 0.88);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border-glass);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 24px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 22px;
  font-weight: 800;
  letter-spacing: 0.5px;
  color: #fff;
  text-shadow: 0 0 18px rgba(0, 224, 255, 0.35);
  white-space: nowrap;
}
.brand span {
  color: var(--neon);
}
.brand-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--neon);
  box-shadow: 0 0 12px var(--neon), 0 0 4px var(--neon);
  flex-shrink: 0;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav-link {
  position: relative;
  color: var(--text-muted);
  font-size: 15px;
  font-weight: 500;
  padding: 8px 2px;
}
.nav-link:hover {
  color: #fff;
  text-shadow: 0 0 12px rgba(0, 224, 255, 0.6);
}
.nav-link.active,
.nav-link.is-active {
  color: var(--neon);
  text-shadow: 0 0 14px rgba(0, 224, 255, 0.7);
}
.nav-link.active::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--neon), var(--neonpurple));
  box-shadow: 0 0 12px var(--neon);
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  padding: 8px;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: all 0.3s ease;
}
.nav-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}
.nav-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 10px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all 0.3s ease;
}
.btn-primary {
  background: linear-gradient(135deg, #00e0ff, #8b5cf6);
  color: #0b0f1a;
  padding: 12px 28px;
  font-size: 15px;
  box-shadow: 0 4px 20px rgba(0, 224, 255, 0.25);
}
.btn-primary:hover {
  box-shadow: 0 6px 28px rgba(0, 224, 255, 0.45);
  transform: translateY(-2px);
  color: #0b0f1a;
}
.btn-sm {
  padding: 8px 18px;
  font-size: 14px;
}
.btn-lg {
  padding: 14px 38px;
  font-size: 17px;
  border-radius: 12px;
}
.btn-outline {
  border: 1px solid var(--border-glass);
  color: var(--neon);
  background: transparent;
  padding: 10px 22px;
  font-size: 14px;
}
.btn-outline:hover {
  border-color: var(--neon);
  background: rgba(0, 224, 255, 0.08);
  color: var(--neon);
}

/* ===== 页面 Banner ===== */
.page-banner {
  position: relative;
  padding: 96px 0 68px;
  text-align: center;
  background-size: cover;
  background-position: center;
  border-bottom: 1px solid var(--border-glass);
}
.page-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(11, 15, 26, 0.94), rgba(11, 15, 26, 0.78));
}
.page-banner .wrap {
  position: relative;
  z-index: 2;
}
.page-banner h1 {
  font-size: 40px;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 14px;
  text-shadow: 0 0 30px rgba(0, 224, 255, 0.25);
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}
.breadcrumb {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 10px;
  color: var(--text-muted);
  font-size: 14px;
  flex-wrap: wrap;
}
.breadcrumb a {
  color: var(--neon);
}
.breadcrumb i {
  font-size: 12px;
  color: var(--text-muted);
}

/* ===== 文章主体布局 ===== */
.article-section {
  padding: 64px 0;
}
.article-layout {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 36px;
  align-items: start;
}
.article-main {
  min-width: 0;
}
.article-card {
  background: var(--panel);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow-card);
}
.article-card:focus-within {
  outline: 2px solid rgba(0, 224, 255, 0.3);
}

/* ===== 文章内容排版 ===== */
.article-content {
  color: #d1d9e6;
  font-size: 16px;
  line-height: 1.9;
  word-break: break-word;
}
.article-content h2 {
  font-size: 24px;
  font-weight: 700;
  color: #fff;
  margin: 28px 0 14px;
  line-height: 1.4;
}
.article-content h3 {
  font-size: 20px;
  font-weight: 600;
  color: #e2e8f0;
  margin: 24px 0 12px;
}
.article-content h4 {
  font-size: 18px;
  font-weight: 600;
  color: #e2e8f0;
  margin: 20px 0 10px;
}
.article-content p {
  margin-bottom: 16px;
}
.article-content ul,
.article-content ol {
  margin: 0 0 18px 24px;
}
.article-content li {
  margin-bottom: 8px;
}
.article-content a {
  color: var(--neon);
  border-bottom: 1px solid rgba(0, 224, 255, 0.3);
}
.article-content a:hover {
  color: #fff;
  border-bottom-color: var(--neon);
}
.article-content img {
  border-radius: var(--radius-md);
  margin: 20px auto;
}
.article-content blockquote {
  border-left: 3px solid var(--neon);
  padding: 12px 20px;
  background: rgba(0, 224, 255, 0.05);
  border-radius: 0 10px 10px 0;
  margin: 18px 0;
  color: #b0c4d8;
}
.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 18px 0;
  font-size: 14px;
}
.article-content th,
.article-content td {
  border: 1px solid rgba(255, 255, 255, 0.12);
  padding: 10px 12px;
  text-align: left;
}
.article-content th {
  background: rgba(0, 224, 255, 0.08);
  color: var(--neon);
  font-weight: 600;
}
.article-content code {
  background: rgba(139, 92, 246, 0.15);
  border-radius: 6px;
  padding: 2px 8px;
  font-size: 14px;
  color: #c4b5fd;
}

.not-found {
  text-align: center;
  padding: 60px 16px;
}
.not-found .not-found-icon {
  font-size: 56px;
  color: var(--neon);
  margin-bottom: 20px;
  text-shadow: 0 0 24px rgba(0, 224, 255, 0.4);
}
.not-found h2 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 10px;
  color: #fff;
}
.not-found p {
  color: var(--text-muted);
  margin-bottom: 24px;
}

/* ===== 侧边栏 ===== */
.article-side {
  display: flex;
  flex-direction: column;
  gap: 24px;
  min-width: 0;
}
.side-card {
  background: var(--panel);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 24px;
}
.side-card h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  gap: 10px;
  color: #e2e8f0;
}
.side-card h3::after {
  content: '';
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--neon), transparent);
}
.side-search {
  display: flex;
  align-items: center;
  border: 1px solid var(--border-glass);
  border-radius: 10px;
  overflow: hidden;
  background: rgba(0, 0, 0, 0.2);
  transition: border-color 0.3s ease;
}
.side-search:focus-within {
  border-color: var(--neon);
  box-shadow: 0 0 0 3px rgba(0, 224, 255, 0.08);
}
.side-search input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  padding: 11px 14px;
  color: #fff;
  font-size: 14px;
  min-width: 0;
}
.side-search input::placeholder {
  color: #64748b;
}
.side-search button {
  background: linear-gradient(135deg, #00e0ff, #8b5cf6);
  border: none;
  padding: 11px 16px;
  color: #0b0f1a;
  cursor: pointer;
  transition: opacity 0.3s ease;
}
.side-search button:hover {
  opacity: 0.88;
}
.side-post {
  display: flex;
  gap: 12px;
  padding: 12px 0;
  align-items: center;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.side-post:last-child {
  border-bottom: none;
}
.side-post-index {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 224, 255, 0.12);
  color: var(--neon);
  font-size: 13px;
  font-weight: 700;
}
.side-post-info {
  min-width: 0;
  flex: 1;
}
.side-post-title {
  display: block;
  font-size: 14px;
  color: #cbd5e1;
  line-height: 1.5;
  transition: color 0.3s;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.side-post:hover .side-post-title {
  color: var(--neon);
}
.side-post-date {
  font-size: 12px;
  color: #64748b;
  margin-top: 2px;
  display: block;
}
.side-cta {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, rgba(0, 224, 255, 0.13), rgba(139, 92, 246, 0.14));
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  text-align: center;
}
.side-cta img {
  border-radius: 12px;
  margin-bottom: 16px;
  width: 100%;
  height: 120px;
  object-fit: cover;
}
.side-cta h4 {
  font-size: 17px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 6px;
}

/* ===== 核心服务板块 ===== */
.section-head {
  text-align: center;
  margin-bottom: 44px;
}
.section-head .tag {
  color: var(--neon);
  font-size: 13px;
  letter-spacing: 3px;
  text-transform: uppercase;
  font-weight: 600;
}
.section-head h2 {
  font-size: 32px;
  font-weight: 800;
  margin-top: 8px;
  color: #fff;
  line-height: 1.3;
}
.section-head p {
  color: var(--text-muted);
  margin-top: 12px;
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
}
.feature-card {
  background: var(--panel);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 22px;
  text-align: center;
  transition: all 0.3s ease;
}
.feature-card:hover {
  transform: translateY(-6px);
  border-color: rgba(0, 224, 255, 0.4);
  box-shadow: 0 12px 36px rgba(0, 224, 255, 0.15);
}
.feature-card img {
  border-radius: 12px;
  width: 100%;
  height: 180px;
  object-fit: cover;
}

/* ===== FAQ ===== */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.faq-item {
  background: var(--panel);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color 0.3s ease;
}
.faq-item:hover {
  border-color: rgba(0, 224, 255, 0.3);
}
.faq-item summary {
  cursor: pointer;
  padding: 18px 22px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
  color: #e2e8f0;
  list-style: none;
  transition: all 0.3s ease;
  font-size: 15px;
}
.faq-item summary::-webkit-details-marker {
  display: none;
}
.faq-item summary::after {
  content: '+';
  font-size: 22px;
  color: var(--neon);
  transition: transform 0.3s ease;
  line-height: 1;
  flex-shrink: 0;
}
.faq-item[open] summary {
  color: var(--neon);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.faq-item[open] summary::after {
  transform: rotate(45deg);
}
.faq-answer {
  padding: 16px 22px;
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.8;
}

/* ===== CTA ===== */
.cta-box {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, rgba(0, 224, 255, 0.13), rgba(139, 92, 246, 0.16));
  border: 1px solid rgba(0, 224, 255, 0.3);
  border-radius: 24px;
  padding: 64px 40px;
  text-align: center;
}
.cta-box::before {
  content: '';
  position: absolute;
  top: -60px;
  right: -60px;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 224, 255, 0.15), transparent 70%);
}
.cta-box h2 {
  font-size: 32px;
  font-weight: 800;
  color: #fff;
  position: relative;
  z-index: 1;
}
.cta-box p {
  color: var(--text-muted);
  max-width: 560px;
  margin: 14px auto 28px;
  position: relative;
  z-index: 1;
}
.cta-box .btn {
  position: relative;
  z-index: 1;
}

/* ===== 页脚 ===== */
.site-footer {
  background: #0a0e18;
  border-top: 1px solid var(--border-glass);
  padding-top: 60px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.4fr;
  gap: 40px;
  padding-bottom: 40px;
}
.footer-brand p {
  color: var(--text-muted);
  font-size: 14px;
  margin-top: 14px;
  max-width: 320px;
  line-height: 1.7;
}
.footer-logo {
  font-size: 20px;
  font-weight: 800;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: #fff;
}
.footer-logo span {
  color: var(--neon);
}
.footer-block h4 {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 16px;
  color: #e2e8f0;
}
.footer-block a {
  display: block;
  color: var(--text-muted);
  font-size: 14px;
  padding: 4px 0;
}
.footer-block a:hover {
  color: var(--neon);
}
.footer-block p {
  color: var(--text-muted);
  font-size: 14px;
  padding: 3px 0;
}
.footer-block p i {
  color: var(--neon);
  width: 20px;
  margin-right: 4px;
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 18px 0;
}
.footer-bottom-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: #64748b;
  font-size: 13px;
  flex-wrap: wrap;
  gap: 8px;
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .article-layout {
    grid-template-columns: 1fr;
  }
  .article-side {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
  .side-cta {
    grid-column: 1 / -1;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 768px) {
  .header-inner {
    height: 66px;
  }
  .main-nav {
    position: fixed;
    top: 66px;
    right: -100%;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    background: rgba(11, 15, 26, 0.98);
    width: 280px;
    height: calc(100vh - 66px);
    padding: 28px 24px;
    transition: right 0.35s ease;
    border-left: 1px solid var(--border-glass);
    box-shadow: -10px 0 40px rgba(0, 0, 0, 0.5);
  }
  .main-nav.open {
    right: 0;
  }
  .nav-link {
    padding: 14px 0;
    font-size: 16px;
    width: 100%;
  }
  .nav-toggle {
    display: flex;
  }
  .page-banner {
    padding: 64px 0 44px;
  }
  .page-banner h1 {
    font-size: 28px;
  }
  .article-card {
    padding: 24px;
  }
  .article-header h2 {
    font-size: 24px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 28px;
  }
  .cta-box {
    padding: 44px 24px;
  }
  .cta-box h2 {
    font-size: 26px;
  }
  .section-head h2 {
    font-size: 26px;
  }
}
@media (max-width: 520px) {
  .wrap {
    padding: 0 16px;
  }
  .header-inner {
    height: 62px;
  }
  .brand {
    font-size: 18px;
  }
  .main-nav {
    top: 62px;
    width: 100%;
    height: calc(100vh - 62px);
  }
  .header-actions .btn-sm {
    display: none;
  }
  .page-banner h1 {
    font-size: 22px;
  }
  .article-section {
    padding: 40px 0;
  }
  .article-card {
    padding: 20px;
  }
  .article-side {
    grid-template-columns: 1fr;
  }
  .feature-card img {
    height: 160px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .footer-bottom-inner {
    flex-direction: column;
    text-align: center;
    gap: 6px;
  }
  .cta-box {
    padding: 36px 18px;
    border-radius: 18px;
  }
  .cta-box h2 {
    font-size: 22px;
  }
  .btn-lg {
    padding: 12px 24px;
    font-size: 15px;
  }
}

/* roulang page: category2 */
:root {
  --neon-primary: #8b5cf6;
  --neon-secondary: #22d3ee;
  --neon-accent: #00ff88;
  --bg-deep: #090912;
  --bg-dark: #10101a;
  --bg-card: #161627;
  --bg-soft: #1c1c30;
  --border-dark: rgba(255, 255, 255, .08);
  --border-neon: rgba(139, 92, 246, .42);
  --text-main: #e8eaf2;
  --text-muted: #9aa3b5;
  --text-weak: #6b7280;
  --radius-md: 16px;
  --radius-lg: 24px;
  --shadow-card: 0 10px 40px rgba(0, 0, 0, .42);
  --shadow-glow: 0 0 40px rgba(139, 92, 246, .26);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg-deep);
  color: var(--text-main);
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

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

button {
  font-family: inherit;
}

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

.gradient-text {
  background: linear-gradient(120deg, #8b5cf6, #22d3ee, #00ff88);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(9, 9, 18, .86);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-dark);
  box-shadow: 0 4px 30px rgba(0, 0, 0, .38);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 23px;
  font-weight: 800;
  color: #fff;
  letter-spacing: .5px;
  line-height: 1;
  white-space: nowrap;
}

.brand span:not(.brand-dot) {
  color: var(--neon-primary);
}

.brand-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--neon-accent);
  box-shadow: 0 0 12px var(--neon-accent);
  flex-shrink: 0;
}

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

.nav-link {
  color: var(--text-muted);
  font-weight: 600;
  font-size: 15px;
  padding: 10px 18px;
  border-radius: 12px;
  transition: .25s;
  position: relative;
  white-space: nowrap;
}

.nav-link:hover {
  color: #fff;
  background: rgba(255, 255, 255, .05);
}

.nav-link.active {
  color: #fff;
  background: rgba(139, 92, 246, .15);
  box-shadow: inset 0 0 0 1px var(--border-neon);
}

.nav-link.active::after {
  content: "";
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 4px;
  height: 2px;
  background: linear-gradient(90deg, var(--neon-primary), var(--neon-secondary));
  border-radius: 2px;
  box-shadow: 0 0 10px rgba(139, 92, 246, .8);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: 0;
  padding: 8px;
  cursor: pointer;
}

.nav-toggle span {
  width: 22px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: .3s;
}

.nav-toggle.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.open span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  padding: 12px 28px;
  border-radius: 999px;
  transition: .3s;
  cursor: pointer;
  border: 0;
  font-size: 15px;
  line-height: 1.4;
}

.btn-sm {
  padding: 9px 22px;
  font-size: 14px;
}

.btn-primary {
  background: linear-gradient(135deg, var(--neon-primary), var(--neon-secondary));
  color: #fff;
  box-shadow: 0 4px 24px rgba(139, 92, 246, .35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(139, 92, 246, .5);
}

.btn-outline {
  border: 1px solid var(--border-neon);
  color: #fff;
  background: rgba(139, 92, 246, .08);
}

.btn-outline:hover {
  background: rgba(139, 92, 246, .2);
  border-color: var(--neon-primary);
  transform: translateY(-2px);
}

/* ===== Hero ===== */
.page-hero {
  position: relative;
  padding: 112px 0 96px;
  background-size: cover;
  background-position: center;
}

.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(9, 9, 18, .72) 0%, rgba(9, 9, 18, .9) 100%);
}

.page-hero .wrap {
  position: relative;
  z-index: 2;
}

.breadcrumb {
  color: var(--text-muted);
  font-size: 14px;
  display: flex;
  gap: 10px;
  align-items: center;
  margin-bottom: 26px;
  flex-wrap: wrap;
}

.breadcrumb a {
  color: var(--text-muted);
  transition: .25s;
}

.breadcrumb a:hover {
  color: #fff;
}

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

.hero-kicker {
  display: inline-flex;
  gap: 8px;
  align-items: center;
  color: var(--neon-accent);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 1px;
  border: 1px solid rgba(0, 255, 136, .3);
  border-radius: 999px;
  padding: 8px 20px;
  background: rgba(0, 255, 136, .07);
  margin-bottom: 24px;
}

.page-hero h1 {
  font-size: 46px;
  font-weight: 900;
  line-height: 1.22;
  color: #fff;
  margin: 0 0 22px;
  letter-spacing: 1px;
}

.hero-text {
  font-size: 18px;
  color: var(--text-muted);
  line-height: 1.85;
  max-width: 680px;
  margin-bottom: 34px;
}

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

/* ===== Section ===== */
.section {
  padding: 96px 0;
}

.section-alt {
  background: linear-gradient(180deg, rgba(139, 92, 246, .045), rgba(34, 211, 238, .02)), var(--bg-deep);
}

.section-dark {
  background: #0b0b16;
}

.section-head {
  max-width: 760px;
  margin-bottom: 52px;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--neon-secondary);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 2px;
  text-transform: uppercase;
}

.section-title {
  font-size: 34px;
  font-weight: 800;
  color: #fff;
  line-height: 1.28;
  margin: 14px 0 16px;
}

.section-text {
  color: var(--text-muted);
  font-size: 16px;
  line-height: 1.85;
  margin: 0;
}

.section-title .highlight {
  background: linear-gradient(120deg, var(--neon-primary), var(--neon-secondary));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ===== Intro / Stats ===== */
.guide-intro {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 60px;
  align-items: center;
}

.intro-copy .section-text + .section-text {
  margin-top: 16px;
}

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

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-md);
  padding: 30px 20px;
  text-align: center;
  transition: .3s;
}

.stat-card:hover {
  border-color: var(--border-neon);
  box-shadow: var(--shadow-glow);
  transform: translateY(-4px);
}

.stat-num {
  font-size: 38px;
  font-weight: 900;
  background: linear-gradient(120deg, var(--neon-primary), var(--neon-accent));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.2;
}

.stat-label {
  color: var(--text-muted);
  font-size: 14px;
  margin-top: 8px;
}

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

.guide-card {
  background: var(--bg-card);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: .35s;
  display: block;
  position: relative;
}

.guide-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-neon);
  box-shadow: var(--shadow-glow);
}

.guide-card .cover {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
}

.guide-card .cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: .5s;
}

.guide-card:hover .cover img {
  transform: scale(1.06);
}

.card-badge {
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 2;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(139, 92, 246, .92);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  padding: 6px 14px;
  border-radius: 999px;
  backdrop-filter: blur(4px);
}

.badge-green {
  background: rgba(0, 255, 136, .9);
  color: #0a1a12;
}

.badge-cyan {
  background: rgba(34, 211, 238, .9);
  color: #08221f;
}

.guide-card .body {
  padding: 20px 22px 24px;
}

.guide-card .title {
  font-size: 17px;
  font-weight: 700;
  color: #fff;
  line-height: 1.5;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.guide-card .desc {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 14px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.guide-card .meta {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 12px;
  color: var(--text-weak);
}

.guide-card .meta i {
  margin-right: 4px;
}

/* ===== Feature ===== */
.feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  margin-bottom: 88px;
}

.feature-row:last-child {
  margin-bottom: 0;
}

.feature-row.reverse .feature-media {
  order: 2;
}

.feature-media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-dark);
  box-shadow: var(--shadow-card);
  aspect-ratio: 4 / 3;
}

.feature-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.feature-tag {
  color: var(--neon-accent);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 1px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.feature-title {
  font-size: 26px;
  font-weight: 800;
  color: #fff;
  margin: 10px 0 14px;
  line-height: 1.35;
}

.feature-text {
  color: var(--text-muted);
  font-size: 16px;
  line-height: 1.85;
  margin-bottom: 20px;
}

.feature-list {
  list-style: none;
  padding: 0;
  margin: 0 0 26px;
}

.feature-list li {
  position: relative;
  padding-left: 28px;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 10px;
  font-size: 15px;
}

.feature-list li::before {
  content: "\f00c";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  position: absolute;
  left: 0;
  top: 2px;
  color: var(--neon-accent);
  font-size: 14px;
}

/* ===== Tag Cloud ===== */
.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: center;
}

.tag-pill {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 26px;
  border-radius: 999px;
  background: var(--bg-card);
  border: 1px solid var(--border-dark);
  color: var(--text-main);
  font-weight: 600;
  font-size: 15px;
  transition: .3s;
}

.tag-pill:hover {
  border-color: var(--neon-primary);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 0 26px rgba(139, 92, 246, .28);
}

.tag-pill i {
  color: var(--neon-secondary);
}

.tag-pill .count {
  color: var(--text-weak);
  font-size: 13px;
  background: rgba(255, 255, 255, .06);
  padding: 2px 10px;
  border-radius: 999px;
}

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

.step-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-md);
  padding: 32px 26px;
  transition: .3s;
}

.step-card:hover {
  border-color: var(--border-neon);
  box-shadow: var(--shadow-glow);
  transform: translateY(-4px);
}

.step-num {
  font-size: 46px;
  font-weight: 900;
  background: linear-gradient(135deg, var(--neon-primary), var(--neon-secondary));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1;
  margin-bottom: 16px;
}

.step-title {
  font-size: 17px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
}

.step-text {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.75;
  margin: 0;
}

/* ===== FAQ ===== */
.faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-md);
  padding: 22px 28px;
  transition: .3s;
}

.faq-item:hover {
  border-color: var(--border-neon);
}

.faq-q {
  display: flex;
  align-items: center;
  gap: 16px;
  cursor: pointer;
  font-weight: 700;
  color: #fff;
  font-size: 16px;
  line-height: 1.5;
}

.faq-q .icon {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: rgba(139, 92, 246, .15);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--neon-primary);
  flex-shrink: 0;
  font-size: 13px;
  transition: .3s;
}

.faq-item.open .faq-q .icon {
  background: rgba(139, 92, 246, .28);
  color: #fff;
}

.faq-a {
  padding-left: 50px;
  color: var(--text-muted);
  line-height: 1.85;
  font-size: 15px;
  margin-top: 12px;
  display: none;
}

.faq-item.open .faq-a {
  display: block;
}

/* ===== CTA ===== */
.cta-section {
  position: relative;
  padding: 96px 0;
  background-size: cover;
  background-position: center;
  text-align: center;
}

.cta-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(9, 9, 18, .84);
}

.cta-inner {
  position: relative;
  z-index: 2;
  max-width: 760px;
  margin: 0 auto;
}

.cta-title {
  font-size: 38px;
  font-weight: 900;
  color: #fff;
  margin-bottom: 18px;
  line-height: 1.3;
}

.cta-text {
  color: var(--text-muted);
  font-size: 17px;
  line-height: 1.85;
  margin-bottom: 34px;
}

/* ===== Footer ===== */
.site-footer {
  background: #0b0b16;
  border-top: 1px solid var(--border-dark);
  padding: 70px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 44px;
  padding-bottom: 52px;
}

.footer-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 21px;
  font-weight: 800;
  color: #fff;
  letter-spacing: .3px;
}

.footer-logo span:not(.brand-dot) {
  color: var(--neon-primary);
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.85;
  margin: 18px 0 0;
}

.footer-block h4 {
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 20px;
}

.footer-block a {
  display: block;
  color: var(--text-muted);
  font-size: 14px;
  line-height: 2.2;
  transition: .25s;
}

.footer-block a:hover {
  color: var(--neon-accent);
  transform: translateX(4px);
}

.footer-block p {
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.9;
  margin: 0 0 8px;
}

.footer-block p i {
  width: 20px;
  color: var(--neon-secondary);
}

.footer-bottom {
  border-top: 1px solid var(--border-dark);
  padding: 22px 0;
}

.footer-bottom-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  color: var(--text-weak);
  font-size: 13px;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .guide-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .feature-row {
    grid-template-columns: 1fr;
    gap: 36px;
    margin-bottom: 64px;
  }

  .feature-row.reverse .feature-media {
    order: 0;
  }

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

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

  .guide-intro {
    grid-template-columns: 1fr;
    gap: 44px;
  }

  .page-hero h1 {
    font-size: 38px;
  }

  .section-title {
    font-size: 30px;
  }
}

@media (max-width: 768px) {
  .main-nav {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: #0d0d1a;
    flex-direction: column;
    align-items: stretch;
    padding: 18px 24px 24px;
    gap: 8px;
    border-bottom: 1px solid var(--border-dark);
    transform: translateY(-120%);
    transition: .35s;
    opacity: 0;
    pointer-events: none;
    box-shadow: 0 20px 40px rgba(0, 0, 0, .4);
  }

  .main-nav.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-link {
    padding: 14px 18px;
    font-size: 16px;
    text-align: center;
  }

  .nav-link.active::after {
    display: none;
  }

  .page-hero {
    padding: 84px 0 72px;
  }

  .page-hero h1 {
    font-size: 32px;
  }

  .hero-text {
    font-size: 16px;
  }

  .section {
    padding: 68px 0;
  }

  .section-title {
    font-size: 27px;
  }

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

  .cta-title {
    font-size: 30px;
  }

  .cta-section {
    padding: 72px 0;
  }

  .hero-actions .btn {
    width: 100%;
    justify-content: center;
  }
}

@media (max-width: 520px) {
  .wrap {
    padding: 0 16px;
  }

  .header-actions .btn-primary {
    display: none;
  }

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

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

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 34px;
  }

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

  .page-hero h1 {
    font-size: 28px;
  }

  .section-title {
    font-size: 24px;
  }

  .feature-title {
    font-size: 22px;
  }

  .cta-title {
    font-size: 26px;
  }

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

  .brand {
    font-size: 19px;
  }
}