/* roulang page: index */
:root{
    --bg-top:#070B16;
    --bg-mid:#0B1220;
    --bg-bottom:#05070F;
    --cyan:#2DE2E6;
    --violet:#7C4DFF;
    --gold:#FFC857;
    --text:#E8EEF9;
    --sub:#A9B6CC;
    --dim:#6B7A93;
    --line:rgba(255,255,255,.08);
    --glass:rgba(255,255,255,.045);
    --glass-strong:rgba(255,255,255,.075);
    --radius-card:16px;
    --radius-btn:10px;
    --shadow-glow:0 0 0 1px rgba(255,255,255,.06), 0 18px 40px -22px rgba(45,226,230,.35);
    --shadow-soft:0 0 0 1px rgba(255,255,255,.06), 0 20px 44px -30px rgba(0,0,0,.9);
    --mono:ui-monospace,"SF Mono",Consolas,"Liberation Mono",Menlo,monospace;
    --ease:cubic-bezier(.22,.61,.36,1);
  }

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

  html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}

  body{
    margin:0;
    min-height:100%;
    font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
    font-size:16px;
    line-height:1.8;
    color:var(--text);
    background-color:var(--bg-top);
    background-image:linear-gradient(180deg,var(--bg-top) 0%,var(--bg-mid) 46%,var(--bg-bottom) 100%);
    background-attachment:fixed;
    -webkit-font-smoothing:antialiased;
    text-rendering:optimizeLegibility;
    overflow-x:hidden;
  }

  img{max-width:100%;display:block;border-style:none;}
  a{color:inherit;text-decoration:none;transition:color .2s var(--ease);}
  button,input,select,textarea{font:inherit;color:inherit;}
  button{cursor:pointer;background:none;border:none;}
  ul,ol{margin:0;padding:0;list-style:none;}
  h1,h2,h3,h4,p{margin:0;}
  h1,h2,h3,h4{line-height:1.3;font-weight:700;}

  ::selection{background:rgba(45,226,230,.28);color:#fff;}

  :focus-visible{
    outline:2px solid rgba(45,226,230,.85);
    outline-offset:2px;
    border-radius:6px;
  }

  .container-x{
    width:100%;
    max-width:1200px;
    margin:0 auto;
    padding-left:20px;
    padding-right:20px;
  }

  /* ---------------- header / nav ---------------- */
  .site-header{
    position:sticky;
    top:0;
    z-index:80;
    background:rgba(7,11,22,.55);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
    transition:background .25s var(--ease), box-shadow .25s var(--ease);
  }
  .site-header.is-scrolled{
    background:rgba(7,11,22,.92);
    backdrop-filter:blur(20px);
    -webkit-backdrop-filter:blur(20px);
  }
  .site-header::after{
    content:"";
    position:absolute;
    left:0;right:0;bottom:0;
    height:1px;
    background:linear-gradient(90deg,transparent 0%,rgba(45,226,230,.75) 50%,transparent 100%);
    opacity:.7;
    pointer-events:none;
  }
  .nav-wrap{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:16px;
    height:64px;
  }
  .brand{display:flex;align-items:center;gap:10px;min-height:44px;}
  .brand-mark{
    width:34px;height:34px;flex:0 0 34px;
    display:grid;place-items:center;
    border-radius:11px;
    background:radial-gradient(120% 120% at 30% 20%,rgba(45,226,230,.28),rgba(124,77,255,.30));
    border:1px solid rgba(45,226,230,.35);
    box-shadow:0 0 18px -4px rgba(45,226,230,.55);
  }
  .brand-mark svg{width:18px;height:18px;display:block;}
  .brand-text{display:flex;flex-direction:column;line-height:1.15;}
  .brand-text strong{
    font-size:15px;letter-spacing:.04em;font-weight:700;color:var(--text);
  }
  .brand-text em{
    font-style:normal;font-size:11px;letter-spacing:.16em;color:var(--cyan);opacity:.9;
  }
  .nav-desktop{display:none;align-items:center;gap:4px;}
  .nav-link{
    position:relative;
    display:inline-flex;align-items:center;
    min-height:44px;
    padding:0 14px;
    font-size:15px;
    color:var(--sub);
    border-radius:var(--radius-btn);
  }
  .nav-link::after{
    content:"";
    position:absolute;left:14px;right:14px;bottom:8px;height:2px;
    border-radius:2px;
    background:linear-gradient(90deg,var(--cyan),var(--violet));
    transform:scaleX(0);
    transform-origin:left center;
    transition:transform .22s var(--ease),opacity .22s var(--ease);
    opacity:0;
  }
  .nav-link:hover{color:var(--text);}
  .nav-link:hover::after{transform:scaleX(1);opacity:.75;}
  .nav-link.is-active{color:var(--cyan);text-shadow:0 0 14px rgba(45,226,230,.55);}
  .nav-link.is-active::after{transform:scaleX(1);opacity:1;}

  .nav-actions{display:flex;align-items:center;gap:10px;}

  .menu-toggle{
    width:44px;height:44px;
    display:grid;place-items:center;
    border-radius:var(--radius-btn);
    border:1px solid var(--line);
    background:var(--glass);
  }
  .menu-toggle span{
    display:block;width:18px;height:2px;border-radius:2px;background:var(--text);
    position:relative;transition:transform .2s var(--ease),background .2s var(--ease);
  }
  .menu-toggle span::before,
  .menu-toggle span::after{
    content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--text);
    transition:transform .2s var(--ease);
  }
  .menu-toggle span::before{top:-6px;}
  .menu-toggle span::after{top:6px;}
  .menu-toggle.is-open span{background:transparent;}
  .menu-toggle.is-open span::before{transform:translateY(6px) rotate(45deg);}
  .menu-toggle.is-open span::after{transform:translateY(-6px) rotate(-45deg);}

  .mobile-drawer{
    position:fixed;
    inset:64px 0 0 0;
    z-index:79;
    display:none;
    flex-direction:column;
    gap:8px;
    padding:22px 20px 40px;
    background:rgba(5,7,15,.97);
    backdrop-filter:blur(18px);
    -webkit-backdrop-filter:blur(18px);
    border-top:1px solid var(--line);
    overflow-y:auto;
  }
  .mobile-drawer.is-open{display:flex;}
  .mobile-drawer .nav-link{
    font-size:17px;
    padding:0 16px;
    background:var(--glass);
    border:1px solid var(--line);
    border-radius:14px;
    min-height:52px;
    animation:drawerIn .28s var(--ease) both;
  }
  .mobile-drawer .nav-link::after{display:none;}
  .mobile-drawer .nav-link.is-active{
    border-color:rgba(45,226,230,.5);
    box-shadow:0 0 0 1px rgba(45,226,230,.25), 0 16px 34px -22px rgba(45,226,230,.6);
  }
  @keyframes drawerIn{from{opacity:0;transform:translateY(8px);}to{opacity:1;transform:none;}}

  /* ---------------- buttons / badges ---------------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    min-height:46px;
    padding:0 22px;
    border-radius:var(--radius-btn);
    font-size:15px;
    font-weight:600;
    letter-spacing:.01em;
    transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
    white-space:nowrap;
  }
  .btn-sm{min-height:42px;padding:0 16px;font-size:14px;}
  .btn-primary{
    color:#04131A;
    background:linear-gradient(135deg,#5BF0F3 0%,var(--cyan) 55%,#19B9C6 100%);
    box-shadow:0 0 0 1px rgba(45,226,230,.5), 0 18px 34px -20px rgba(45,226,230,.85);
  }
  .btn-primary:hover{
    color:#021014;
    box-shadow:0 0 0 1px rgba(45,226,230,.85), 0 0 26px -2px rgba(45,226,230,.6), 0 20px 38px -20px rgba(45,226,230,.9);
    transform:translateY(-1px);
  }
  .btn-ghost{
    color:var(--text);
    background:var(--glass);
    border:1px solid rgba(255,255,255,.14);
    backdrop-filter:blur(12px);
    -webkit-backdrop-filter:blur(12px);
  }
  .btn-ghost:hover{
    border-color:rgba(45,226,230,.6);
    color:#fff;
    box-shadow:0 0 0 1px rgba(45,226,230,.3), 0 16px 32px -22px rgba(45,226,230,.7);
    transform:translateY(-1px);
  }
  .btn:active{transform:translateY(0) scale(.99);}

  .badge{
    display:inline-flex;align-items:center;gap:6px;
    padding:4px 12px;
    font-size:12px;
    letter-spacing:.04em;
    border-radius:999px;
    color:var(--cyan);
    background:rgba(45,226,230,.10);
    border:1px solid rgba(45,226,230,.28);
  }
  .badge-violet{
    color:#C6B4FF;
    background:rgba(124,77,255,.14);
    border-color:rgba(124,77,255,.35);
  }
  .badge-gold{
    color:var(--gold);
    background:rgba(255,200,87,.12);
    border-color:rgba(255,200,87,.32);
  }

  /* ---------------- glass surfaces ---------------- */
  .glass{
    background:var(--glass);
    border:1px solid rgba(255,255,255,.10);
    border-radius:var(--radius-card);
    backdrop-filter:blur(16px);
    -webkit-backdrop-filter:blur(16px);
    box-shadow:inset 0 1px 0 rgba(255,255,255,.10), var(--shadow-soft);
  }
  .card-hover{transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);}
  .card-hover:hover{
    transform:translateY(-2px);
    border-color:rgba(45,226,230,.5);
    box-shadow:inset 0 1px 0 rgba(255,255,255,.12), var(--shadow-glow);
  }

  /* ---------------- hero ---------------- */
  .hero{
    position:relative;
    overflow:hidden;
    padding:52px 0 56px;
    border-bottom:1px solid var(--line);
  }
  .hero-bg{
    position:absolute;inset:0;
    background-image:
      linear-gradient(180deg,rgba(7,11,22,.72) 0%,rgba(7,11,22,.86) 52%,rgba(5,7,15,.96) 100%),
      url('/assets/images/backpic/back-1.png');
    background-size:cover;
    background-position:center;
    opacity:.9;
  }
  .hero-bg::after{
    content:"";
    position:absolute;inset:0;
    background-image:
      radial-gradient(1.5px 1.5px at 12% 22%,rgba(255,255,255,.55),transparent 60%),
      radial-gradient(1.5px 1.5px at 78% 34%,rgba(45,226,230,.6),transparent 60%),
      radial-gradient(1.5px 1.5px at 42% 72%,rgba(124,77,255,.6),transparent 60%),
      radial-gradient(1px 1px at 62% 12%,rgba(255,255,255,.45),transparent 60%),
      radial-gradient(1px 1px at 26% 84%,rgba(255,200,87,.5),transparent 60%);
    opacity:.7;
  }
  .hero-inner{position:relative;display:grid;gap:34px;}

  .hero h1{
    font-size:clamp(30px,4.6vw,52px);
    line-height:1.18;
    letter-spacing:.01em;
    margin:16px 0 18px;
  }
  .hero h1 .accent{
    background:linear-gradient(120deg,var(--cyan) 0%,#9AE9F5 40%,var(--violet) 100%);
    -webkit-background-clip:text;
    background-clip:text;
    color:transparent;
  }
  .hero-lead{
    font-size:clamp(15px,1.7vw,17px);
    color:var(--sub);
    max-width:620px;
    line-height:1.85;
  }
  .hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
  .hero-note{
    margin-top:16px;
    font-size:13px;
    color:var(--dim);
  }
  .status-strip{
    display:flex;flex-wrap:wrap;gap:10px;
    margin-top:30px;
    padding-top:22px;
    border-top:1px solid var(--line);
  }
  .status-chip{
    display:inline-flex;align-items:center;gap:8px;
    padding:8px 14px;
    font-size:13px;
    color:var(--sub);
    border-radius:999px;
    background:rgba(255,255,255,.05);
    border:1px solid var(--line);
  }
  .dot{
    width:7px;height:7px;border-radius:50%;
    background:var(--cyan);
    box-shadow:0 0 10px 1px rgba(45,226,230,.85);
  }
  .dot-gold{background:var(--gold);box-shadow:0 0 10px 1px rgba(255,200,87,.8);}
  .dot-violet{background:#A88BFF;box-shadow:0 0 10px 1px rgba(124,77,255,.85);}

  .hero-visual{
    position:relative;
    border-radius:20px;
    overflow:hidden;
    border:1px solid rgba(255,255,255,.12);
    box-shadow:var(--shadow-glow);
    aspect-ratio:16 / 10;
  }
  .hero-visual img{width:100%;height:100%;object-fit:cover;}
  .hero-visual-overlay{
    position:absolute;inset:0;
    background:linear-gradient(180deg,rgba(7,11,22,.05) 0%,rgba(7,11,22,.78) 100%);
    display:flex;flex-direction:column;justify-content:flex-end;gap:6px;
    padding:18px 20px;
  }
  .hero-visual-overlay strong{font-size:16px;}
  .hero-visual-overlay span{font-size:13px;color:var(--sub);}

  /* ---------------- section basics ---------------- */
  .section{padding:64px 0;}
  .section-head{margin-bottom:32px;}
  .section-head .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    font-size:13px;letter-spacing:.14em;color:var(--cyan);
    text-transform:uppercase;
    margin-bottom:12px;
  }
  .section-title{
    position:relative;
    font-size:clamp(22px,2.6vw,32px);
    padding-left:16px;
    line-height:1.3;
  }
  .section-title::before{
    content:"";
    position:absolute;left:0;top:.28em;
    width:4px;height:22px;border-radius:3px;
    background:linear-gradient(180deg,var(--cyan),var(--violet));
    box-shadow:0 0 14px -2px rgba(45,226,230,.9);
  }
  .section-desc{
    margin-top:12px;
    padding-left:16px;
    color:var(--sub);
    font-size:15px;
    max-width:760px;
  }
  .section-head-row{
    display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;
  }
  .text-link{
    display:inline-flex;align-items:center;gap:6px;
    min-height:44px;
    font-size:14px;color:var(--cyan);
    border-bottom:1px solid rgba(45,226,230,.35);
  }
  .text-link:hover{color:#8BF2F5;border-bottom-color:rgba(45,226,230,.9);}

  /* ---------------- metrics ---------------- */
  .metrics-grid{
    display:grid;
    grid-template-columns:repeat(2,minmax(0,1fr));
    gap:16px;
  }
  .metric-card{padding:20px 18px;}
  .metric-name{font-size:13px;color:var(--sub);letter-spacing:.04em;}
  .metric-value{
    display:flex;align-items:baseline;gap:4px;
    margin:10px 0 12px;
    font-family:var(--mono);
    font-size:clamp(26px,3.4vw,36px);
    font-weight:700;
    letter-spacing:.02em;
    color:var(--cyan);
    line-height:1;
  }
  .metric-value.is-gold{color:var(--gold);}
  .metric-value.is-violet{color:#B49CFF;}
  .metric-unit{font-size:13px;color:var(--dim);font-family:inherit;font-weight:500;}
  .metric-bar{
    height:6px;border-radius:999px;
    background:rgba(255,255,255,.07);
    overflow:hidden;
  }
  .metric-bar i{
    display:block;height:100%;border-radius:999px;
    background:linear-gradient(90deg,var(--cyan),rgba(124,77,255,.9));
    box-shadow:0 0 14px -2px rgba(45,226,230,.9);
  }
  .metric-bar.is-gold i{background:linear-gradient(90deg,var(--gold),rgba(255,200,87,.4));box-shadow:0 0 14px -2px rgba(255,200,87,.85);}
  .metric-foot{margin-top:10px;font-size:12px;color:var(--dim);}

  /* ---------------- bento ---------------- */
  .bento{display:grid;grid-template-columns:1fr;gap:20px;}
  .bento-cell{padding:24px 22px;display:flex;flex-direction:column;gap:12px;}
  .bento-cell h3{font-size:19px;}
  .bento-cell p{color:var(--sub);font-size:14.5px;line-height:1.8;}
  .bento-icon{
    width:42px;height:42px;border-radius:12px;
    display:grid;place-items:center;
    background:linear-gradient(135deg,rgba(45,226,230,.20),rgba(124,77,255,.22));
    border:1px solid rgba(255,255,255,.12);
    color:var(--cyan);font-size:18px;
  }
  .bento-media{
    border-radius:18px;overflow:hidden;position:relative;
    border:1px solid rgba(255,255,255,.12);
    box-shadow:var(--shadow-soft);
    min-height:230px;
  }
  .bento-media img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0;}
  .bento-media figcaption{
    position:absolute;inset:auto 0 0 0;
    padding:18px 20px;
    background:linear-gradient(180deg,rgba(7,11,22,0) 0%,rgba(7,11,22,.9) 100%);
    font-size:14px;color:var(--sub);
  }
  .bento-media figcaption b{display:block;color:var(--text);font-size:16px;margin-bottom:4px;}
  .bento-list{margin-top:auto;display:flex;flex-direction:column;gap:8px;}
  .bento-list li{
    display:flex;align-items:flex-start;gap:8px;
    font-size:14px;color:var(--sub);
  }
  .bento-list li::before{
    content:"";
    width:6px;height:6px;margin-top:8px;flex:0 0 6px;
    border-radius:2px;
    transform:rotate(45deg);
    background:linear-gradient(135deg,var(--cyan),var(--violet));
    box-shadow:0 0 10px -1px rgba(45,226,230,.9);
  }

  /* ---------------- compare ---------------- */
  .compare-grid{display:grid;grid-template-columns:1fr;gap:18px;}
  .compare-panel{padding:24px 22px;}
  .compare-panel.is-best{
    background:linear-gradient(160deg,rgba(45,226,230,.10),rgba(124,77,255,.10));
    border:1px solid rgba(45,226,230,.38);
    box-shadow:0 0 0 1px rgba(45,226,230,.18), 0 24px 48px -28px rgba(45,226,230,.75);
  }
  .compare-panel h3{font-size:17px;margin-bottom:16px;display:flex;align-items:center;gap:10px;}
  .compare-row{
    display:grid;grid-template-columns:96px 1fr;gap:12px;
    padding:12px 0;
    border-top:1px dashed var(--line);
  }
  .compare-row:first-of-type{border-top:none;}
  .compare-tag{
    font-size:12px;color:var(--dim);letter-spacing:.04em;
    padding-top:2px;
  }
  .compare-row p{font-size:14.5px;color:var(--sub);margin:0;}
  .compare-panel.is-best .compare-row p{color:#CFEFF4;}
  .compare-panel.is-best .compare-tag{color:var(--cyan);}

  /* ---------------- cms list ---------------- */
  .post-grid{display:grid;grid-template-columns:1fr;gap:20px;}
  .post-card{overflow:hidden;display:flex;flex-direction:column;height:100%;}
  .post-cover{
    position:relative;
    aspect-ratio:16 / 9;
    overflow:hidden;
    background:rgba(255,255,255,.04);
  }
  .post-cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease);}
  .post-card:hover .post-cover img{transform:scale(1.04);}
  .post-cover .badge{position:absolute;left:14px;top:14px;background:rgba(7,11,22,.7);backdrop-filter:blur(8px);}
  .post-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1;}
  .post-body h3{
    font-size:17px;line-height:1.5;
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  }
  .post-card:hover .post-body h3{color:var(--cyan);}
  .post-excerpt{
    font-size:14px;color:var(--sub);
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  }
  .post-meta{
    margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:10px;
    padding-top:12px;border-top:1px solid var(--line);
    font-size:12.5px;color:var(--dim);
    font-family:var(--mono);letter-spacing:.02em;
  }
  .empty-state{
    display:flex;flex-direction:column;align-items:center;gap:12px;
    text-align:center;
    padding:52px 24px;
    color:var(--sub);
    font-size:14.5px;
  }
  .empty-state svg{width:46px;height:46px;color:var(--cyan);opacity:.75;}

  /* ---------------- evidence ---------------- */
  .voice-grid{display:grid;grid-template-columns:1fr;gap:20px;}
  .voice-card{padding:22px 20px;display:flex;flex-direction:column;gap:12px;}
  .stars{display:flex;gap:4px;color:var(--gold);font-size:14px;letter-spacing:.1em;}
  .voice-card p{font-size:14.5px;color:var(--sub);}
  .voice-who{display:flex;align-items:center;gap:10px;margin-top:auto;}
  .avatar{
    width:38px;height:38px;border-radius:50%;
    display:grid;place-items:center;
    background:linear-gradient(135deg,rgba(45,226,230,.28),rgba(124,77,255,.3));
    border:1px solid rgba(255,255,255,.14);
    font-size:14px;font-weight:600;color:#fff;
  }
  .voice-who small{display:block;color:var(--dim);font-size:12px;}

  /* ---------------- faq ---------------- */
  .faq-wrap{max-width:860px;margin:0 auto;display:flex;flex-direction:column;gap:12px;}
  .faq-item{
    border-radius:14px;
    background:var(--glass);
    border:1px solid rgba(255,255,255,.10);
    overflow:hidden;
    transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
  }
  .faq-item[open]{
    border-color:rgba(45,226,230,.5);
    box-shadow:0 0 0 1px rgba(45,226,230,.18), 0 20px 40px -30px rgba(45,226,230,.9);
  }
  .faq-item summary{
    display:flex;align-items:center;gap:14px;
    padding:18px 20px;
    cursor:pointer;
    min-height:44px;
    list-style:none;
    font-size:16px;font-weight:600;
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-num{
    font-family:var(--mono);
    font-size:13px;color:var(--cyan);
    flex:0 0 26px;
    opacity:.85;
  }
  .faq-question{flex:1;}
  .faq-plus{
    position:relative;
    width:20px;height:20px;flex:0 0 20px;
    transition:transform .24s var(--ease);
  }
  .faq-plus::before,.faq-plus::after{
    content:"";position:absolute;left:50%;top:50%;
    background:var(--cyan);border-radius:2px;
    transform:translate(-50%,-50%);
  }
  .faq-plus::before{width:14px;height:2px;}
  .faq-plus::after{width:2px;height:14px;transition:transform .24s var(--ease),opacity .24s var(--ease);}
  .faq-item[open] .faq-plus::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0;}
  .faq-answer{
    padding:0 20px 20px 60px;
    color:var(--sub);
    font-size:14.8px;
    line-height:1.85;
  }

  /* ---------------- cta / form ---------------- */
  .cta-section{padding-top:20px;}
  .cta-panel{
    padding:30px 24px;
    border-radius:22px;
    background:
      radial-gradient(120% 140% at 100% 0%,rgba(124,77,255,.24),transparent 55%),
      radial-gradient(120% 140% at 0% 100%,rgba(45,226,230,.20),transparent 55%),
      rgba(255,255,255,.045);
    border:1px solid rgba(255,255,255,.12);
    backdrop-filter:blur(18px);
    -webkit-backdrop-filter:blur(18px);
    box-shadow:inset 0 1px 0 rgba(255,255,255,.12), 0 30px 60px -40px rgba(45,226,230,.8);
  }
  .cta-grid{display:grid;grid-template-columns:1fr;gap:30px;}
  .field{display:flex;flex-direction:column;gap:8px;margin-bottom:16px;}
  .field label{font-size:13.5px;color:var(--sub);letter-spacing:.02em;}
  .field input,.field select,.field textarea{
    width:100%;
    padding:12px 14px;
    border-radius:var(--radius-btn);
    background:rgba(255,255,255,.05);
    border:1px solid rgba(255,255,255,.13);
    color:var(--text);
    font-size:15px;
    line-height:1.6;
    transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
    appearance:none;
  }
  .field textarea{min-height:120px;resize:vertical;}
  .field select{
    background-image:linear-gradient(45deg,transparent 50%,rgba(232,238,249,.7) 50%),linear-gradient(135deg,rgba(232,238,249,.7) 50%,transparent 50%);
    background-position:calc(100% - 20px) 21px,calc(100% - 14px) 21px;
    background-size:6px 6px,6px 6px;
    background-repeat:no-repeat;
  }
  .field input::placeholder,.field textarea::placeholder{color:rgba(107,122,147,.9);}
  .field input:focus,.field select:focus,.field textarea:focus{
    outline:none;
    border-color:rgba(45,226,230,.85);
    background:rgba(255,255,255,.07);
    box-shadow:0 0 0 4px rgba(45,226,230,.16);
  }
  .form-note{margin-top:12px;font-size:12.5px;color:var(--dim);line-height:1.7;}
  .form-ok{
    display:none;
    margin-top:14px;padding:12px 14px;
    border-radius:var(--radius-btn);
    background:rgba(45,226,230,.12);
    border:1px solid rgba(45,226,230,.4);
    color:#A9F2F5;font-size:14px;
  }
  .form-ok.is-visible{display:block;}
  .why-list{display:flex;flex-direction:column;gap:14px;margin:18px 0 22px;}
  .why-item{display:flex;gap:12px;align-items:flex-start;}
  .why-index{
    flex:0 0 30px;height:30px;border-radius:9px;
    display:grid;place-items:center;
    font-family:var(--mono);font-size:13px;
    color:var(--cyan);
    background:rgba(45,226,230,.10);
    border:1px solid rgba(45,226,230,.3);
  }
  .why-item strong{display:block;font-size:15px;}
  .why-item span{font-size:13.5px;color:var(--sub);}
  .contact-block{
    padding:16px 18px;
    border-radius:14px;
    background:rgba(255,255,255,.05);
    border:1px solid var(--line);
    font-size:13.5px;color:var(--sub);
    display:flex;flex-direction:column;gap:8px;
  }
  .contact-block b{color:var(--text);font-size:14.5px;}

  /* ---------------- footer ---------------- */
  .site-footer{
    margin-top:64px;
    background:linear-gradient(180deg,rgba(7,11,22,0) 0%,rgba(5,7,15,.9) 55%,#05070F 100%);
    border-top:1px solid transparent;
    border-image:linear-gradient(90deg,transparent,rgba(45,226,230,.55),transparent) 1;
    padding:48px 0 26px;
  }
  .footer-grid{display:grid;grid-template-columns:1fr;gap:32px;}
  .footer-brand{display:flex;flex-direction:column;gap:14px;max-width:340px;}
  .footer-brand p{font-size:13.5px;color:var(--dim);line-height:1.85;}
  .footer-title{
    font-size:14px;letter-spacing:.08em;color:var(--text);
    margin-bottom:14px;
  }
  .footer-links{display:flex;flex-direction:column;gap:4px;}
  .footer-links a{
    display:inline-flex;align-items:center;
    min-height:40px;
    font-size:14px;color:var(--dim);
  }
  .footer-links a:hover{color:var(--text);}
  .footer-bottom{
    margin-top:36px;padding-top:20px;
    border-top:1px solid var(--line);
    display:flex;flex-wrap:wrap;gap:10px 20px;
    align-items:center;justify-content:space-between;
    font-size:12.5px;color:var(--dim);
  }
  .footer-bottom .mono{font-family:var(--mono);letter-spacing:.02em;}

  /* ---------------- responsive ---------------- */
  @media (min-width:640px){
    .container-x{padding-left:32px;padding-right:32px;}
    .metrics-grid{grid-template-columns:repeat(3,minmax(0,1fr));}
    .post-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
    .voice-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
    .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
    .compare-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
    .cta-panel{padding:38px 34px;}
  }

  @media (min-width:768px){
    .nav-wrap{height:72px;}
    .mobile-drawer{inset:72px 0 0 0;}
    .section{padding:80px 0;}
    .hero{padding:64px 0 70px;}
    .bento{grid-template-columns:repeat(3,minmax(0,1fr));}
    .bento-cell.bento-wide{grid-column:span 2;}
    .bento-cell.bento-tall{grid-row:span 2;}
    .bento-media{grid-column:span 2;}
    .footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;}
  }

  @media (min-width:1024px){
    .nav-desktop{display:flex;}
    .menu-toggle{display:none;}
    .section{padding:96px 0;}
    .hero{padding:76px 0 84px;}
    .hero-inner{grid-template-columns:1.15fr .85fr;align-items:center;gap:52px;}
    .metrics-grid{grid-template-columns:repeat(5,minmax(0,1fr));}
    .post-grid{grid-template-columns:repeat(3,minmax(0,1fr));}
    .voice-grid{grid-template-columns:repeat(3,minmax(0,1fr));}
    .cta-grid{grid-template-columns:1.15fr .85fr;gap:44px;}
    .footer-grid{grid-template-columns:1.6fr 1fr 1fr 1.1fr;gap:40px;}
  }

  @media (min-width:1280px){
    .container-x{max-width:1280px;}
  }

  @media (prefers-reduced-motion:reduce){
    html{scroll-behavior:auto;}
    *,*::before,*::after{
      transition-duration:.01ms !important;
      animation-duration:.01ms !important;
      animation-iteration-count:1 !important;
    }
  }

/* roulang page: article */
:root{
  --bg-0:#070B16;
  --bg-1:#0B1220;
  --bg-2:#05070F;
  --cyan:#2DE2E6;
  --cyan-soft:#7DF3F6;
  --purple:#7C4DFF;
  --gold:#FFC857;
  --txt:#E8EEF9;
  --txt-2:#A9B6CC;
  --txt-3:#6B7A93;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --glass:rgba(255,255,255,.045);
  --glass-2:rgba(255,255,255,.07);
  --r-card:16px;
  --r-btn:10px;
  --r-pill:999px;
  --shadow-glow:0 0 0 1px rgba(255,255,255,.06), 0 18px 40px -22px rgba(45,226,230,.35);
  --shadow-soft:0 0 0 1px rgba(255,255,255,.05), 0 22px 50px -30px rgba(124,77,255,.5);
  --font-sans:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:ui-monospace,"SF Mono",Consolas,"Liberation Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  color:var(--txt);
  background:
    radial-gradient(1100px 600px at 12% -8%, rgba(45,226,230,.10), transparent 60%),
    radial-gradient(900px 520px at 88% 4%, rgba(124,77,255,.14), transparent 62%),
    linear-gradient(180deg,var(--bg-0) 0%,var(--bg-1) 46%,var(--bg-2) 100%);
  background-attachment:fixed;
  font-size:16px;
  line-height:1.8;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:6px;}
.mono{font-family:var(--font-mono);letter-spacing:.02em;}

.container-x{width:100%;max-width:1240px;margin:0 auto;padding-left:20px;padding-right:20px;}
@media (min-width:1024px){.container-x{padding-left:32px;padding-right:32px;}}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:11px 20px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:transform .2s ease-out,background-color .2s ease-out,box-shadow .2s ease-out,color .2s ease-out,border-color .2s ease-out;
  white-space:nowrap;
}
.btn-sm{min-height:38px;padding:9px 16px;font-size:14px;}
.btn-primary{
  background:linear-gradient(135deg,var(--cyan) 0%,#4FD8E8 60%,var(--cyan-soft) 100%);
  color:#04141A;box-shadow:0 0 0 1px rgba(45,226,230,.35),0 16px 34px -20px rgba(45,226,230,.95);
}
.btn-primary:hover{background:linear-gradient(135deg,#5CF0F4 0%,var(--cyan) 100%);box-shadow:0 0 0 1px rgba(45,226,230,.6),0 20px 42px -18px rgba(45,226,230,1);transform:translateY(-1px);}
.btn-ghost{background:var(--glass);border-color:var(--line-strong);color:var(--txt);}
.btn-ghost:hover{background:var(--glass-2);border-color:rgba(45,226,230,.55);color:#fff;box-shadow:0 0 18px -6px rgba(45,226,230,.5);}
.btn:active{transform:translateY(0) scale(.99);}

/* ---------- 顶栏 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(7,11,22,.55);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid var(--line);
  transition:background-color .25s ease,box-shadow .25s ease;
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(45,226,230,.7),transparent);
  pointer-events:none;
}
.site-header.is-scrolled{background:rgba(7,11,22,.92);box-shadow:0 14px 34px -26px rgba(45,226,230,.8);}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:64px;}
@media (min-width:1024px){.nav-wrap{min-height:72px;}}
.brand{display:inline-flex;align-items:center;gap:11px;}
.brand-mark{
  width:38px;height:38px;flex:0 0 38px;display:grid;place-items:center;border-radius:12px;
  background:linear-gradient(140deg,rgba(45,226,230,.20),rgba(124,77,255,.24));
  border:1px solid rgba(45,226,230,.32);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.18),0 0 22px -10px rgba(45,226,230,.9);
}
.brand-mark svg{width:21px;height:21px;}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:16px;font-weight:700;letter-spacing:.04em;}
.brand-text em{font-style:normal;font-size:11px;letter-spacing:.22em;color:var(--cyan-soft);opacity:.9;}
.nav-desktop{display:none;}
@media (min-width:1024px){.nav-desktop{display:flex;align-items:center;gap:6px;}}
.nav-link{
  position:relative;display:inline-flex;align-items:center;min-height:44px;padding:0 14px;
  font-size:15px;color:var(--txt-2);border-radius:8px;
  transition:color .2s ease-out,background-color .2s ease-out,text-shadow .2s ease-out;
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:8px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--cyan),var(--purple));
  transform:scaleX(0);transform-origin:left;transition:transform .22s ease-out;
}
.nav-link:hover{color:var(--txt);background:rgba(255,255,255,.05);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--cyan-soft);text-shadow:0 0 14px rgba(45,226,230,.65);}
.nav-link.is-active::after{transform:scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:12px;}
.menu-toggle{
  width:44px;height:44px;display:grid;place-items:center;border-radius:10px;
  background:var(--glass);border:1px solid var(--line-strong);cursor:pointer;
  transition:border-color .2s ease-out,background-color .2s ease-out;
}
.menu-toggle:hover{border-color:rgba(45,226,230,.5);background:var(--glass-2);}
.menu-toggle span,.menu-toggle span::before,.menu-toggle span::after{
  content:"";display:block;width:18px;height:2px;border-radius:2px;background:var(--txt);
  transition:transform .22s ease-out,opacity .22s ease-out;
}
.menu-toggle span{position:relative;}
.menu-toggle span::before{position:absolute;top:-6px;left:0;}
.menu-toggle span::after{position:absolute;top:6px;left:0;}
.menu-toggle[aria-expanded="true"] span{background:transparent;}
.menu-toggle[aria-expanded="true"] span::before{transform:translateY(6px) rotate(45deg);}
.menu-toggle[aria-expanded="true"] span::after{transform:translateY(-6px) rotate(-45deg);}
@media (min-width:1024px){.menu-toggle{display:none;}}
.mobile-drawer{
  display:none;flex-direction:column;gap:4px;
  padding:18px 20px 26px;
  background:rgba(5,7,15,.96);
  border-top:1px solid var(--line);
  backdrop-filter:blur(20px);
}
.mobile-drawer.is-open{display:flex;animation:drawerIn .24s ease-out;}
@keyframes drawerIn{from{opacity:0;transform:translateY(-8px);}to{opacity:1;transform:translateY(0);}}
.mobile-drawer .nav-link{min-height:48px;width:100%;justify-content:flex-start;}
.mobile-drawer .nav-link::after{left:14px;right:auto;width:34px;}
@media (min-width:1024px){.mobile-drawer{display:none !important;}}

/* ---------- 面包屑 ---------- */
.crumb-bar{padding:22px 0 4px;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--txt-3);}
.crumb a{color:var(--txt-3);transition:color .2s ease-out;}
.crumb a:hover{color:var(--cyan-soft);}
.crumb .sep{color:rgba(255,255,255,.22);}
.crumb .current{color:var(--txt-2);max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ---------- 文章头部 ---------- */
.article-head{padding:26px 0 34px;border-bottom:1px solid var(--line);}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 13px;border-radius:var(--r-pill);
  font-size:12px;letter-spacing:.08em;
  background:rgba(45,226,230,.12);color:var(--cyan-soft);
  border:1px solid rgba(45,226,230,.34);
}
.badge-purple{background:rgba(124,77,255,.15);color:#C6B2FF;border-color:rgba(124,77,255,.4);}
.article-title{
  margin-top:18px;
  font-size:clamp(26px,4vw,44px);
  font-weight:700;line-height:1.25;letter-spacing:.01em;
  max-width:900px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;
  margin-top:20px;font-size:13px;color:var(--txt-3);
}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:rgba(255,255,255,.22);}
.article-meta .mono{color:var(--txt-2);}
.article-actions{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:22px;}
.share-btn{
  display:inline-flex;align-items:center;gap:7px;min-height:40px;padding:8px 14px;
  border-radius:var(--r-btn);font-size:13px;color:var(--txt-2);
  background:var(--glass);border:1px solid var(--line);
  cursor:pointer;transition:all .2s ease-out;
}
.share-btn:hover{color:#fff;border-color:rgba(45,226,230,.5);box-shadow:0 0 16px -6px rgba(45,226,230,.6);}
.share-btn svg{width:15px;height:15px;}

/* ---------- 布局 ---------- */
.layout{
  display:grid;grid-template-columns:minmax(0,1fr);
  gap:48px;padding:48px 0 72px;
}
@media (min-width:1024px){
  .layout{grid-template-columns:minmax(0,1fr) 268px;gap:56px;padding:64px 0 96px;}
}
.article-inner{max-width:820px;}

/* ---------- 正文排版 ---------- */
.article-body{font-size:17px;line-height:1.9;color:var(--txt-2);}
.article-body > * + *{margin-top:20px;}
.article-body p{color:var(--txt-2);}
.article-body h2{
  position:relative;padding-left:15px;margin-top:44px;
  font-size:clamp(20px,2.2vw,27px);font-weight:700;line-height:1.35;color:var(--txt);
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:7px;bottom:7px;width:4px;border-radius:2px;
  background:linear-gradient(180deg,var(--cyan),var(--purple));
  box-shadow:0 0 14px rgba(45,226,230,.65);
}
.article-body h3{margin-top:32px;font-size:18px;font-weight:600;line-height:1.45;color:var(--txt);}
.article-body h4{margin-top:26px;font-size:16px;font-weight:600;color:var(--txt);}
.article-body a{color:var(--cyan-soft);text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1px;}
.article-body a:hover{color:#fff;text-decoration-color:var(--cyan);}
.article-body strong{color:var(--txt);font-weight:600;}
.article-body ul,.article-body ol{padding-left:2px;}
.article-body li{position:relative;padding-left:22px;margin-top:10px;}
.article-body ul > li::before{
  content:"✦";position:absolute;left:0;top:0;font-size:12px;line-height:1.9;color:var(--cyan);
}
.article-body ol{counter-reset:olc;}
.article-body ol > li{counter-increment:olc;}
.article-body ol > li::before{
  content:counter(olc);position:absolute;left:0;top:4px;
  font-family:var(--font-mono);font-size:12px;color:var(--cyan-soft);
  width:16px;height:16px;display:grid;place-items:center;border-radius:50%;
  background:rgba(45,226,230,.12);border:1px solid rgba(45,226,230,.35);
}
.article-body blockquote{
  margin:28px 0;padding:16px 22px;border-left:3px solid var(--cyan);
  background:var(--glass);border-radius:0 12px 12px 0;color:var(--txt);
}
.article-body img{
  width:auto;max-width:100%;margin:28px auto;border-radius:12px;
  border:1px solid var(--line);box-shadow:var(--shadow-glow);
}
.article-body figure{margin:28px 0;}
.article-body figcaption{margin-top:10px;font-size:13px;line-height:1.6;color:var(--txt-3);text-align:center;}
.article-body code{
  font-family:var(--font-mono);font-size:14px;padding:2px 7px;border-radius:6px;
  background:rgba(255,255,255,.07);color:var(--cyan-soft);border:1px solid var(--line);
}
.article-body pre{
  padding:18px 20px;border-radius:12px;overflow-x:auto;
  background:rgba(5,7,15,.75);border:1px solid var(--line);
}
.article-body pre code{background:none;border:none;padding:0;color:var(--txt-2);}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;margin:26px 0;}
.article-body th,.article-body td{padding:11px 14px;text-align:left;border-bottom:1px solid var(--line);}
.article-body th{color:var(--txt);background:rgba(255,255,255,.04);font-weight:600;}
.article-body hr{border:none;height:1px;background:linear-gradient(90deg,transparent,rgba(45,226,230,.5),transparent);margin:36px 0;}

/* ---------- 侧栏目录 / 信息卡 ---------- */
.side-stack{display:flex;flex-direction:column;gap:20px;}
@media (min-width:1024px){.side-stack{position:sticky;top:96px;align-self:start;}}
.glass-card{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-card);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.10);
  padding:20px;
}
.card-label{font-size:12px;letter-spacing:.16em;color:var(--cyan-soft);}
.card-title-lg{margin-top:8px;font-size:17px;font-weight:600;color:var(--txt);line-height:1.5;}
.toc-list{margin-top:14px;display:flex;flex-direction:column;gap:8px;}
.toc-list a{
  display:block;font-size:14px;color:var(--txt-2);padding-left:12px;border-left:2px solid var(--line);
  transition:color .2s ease-out,border-color .2s ease-out;
}
.toc-list a:hover{color:var(--cyan-soft);border-color:var(--cyan);}
.progress-track{height:6px;border-radius:999px;background:rgba(255,255,255,.08);overflow:hidden;margin-top:12px;}
.progress-fill{height:100%;width:68%;border-radius:999px;background:linear-gradient(90deg,var(--cyan),var(--purple));}
.mini-stat{display:flex;justify-content:space-between;align-items:baseline;padding:9px 0;border-bottom:1px dashed var(--line);font-size:13px;color:var(--txt-3);}
.mini-stat:last-child{border-bottom:none;}
.mini-stat b{font-family:var(--font-mono);font-size:15px;color:var(--cyan-soft);font-weight:600;}

/* ---------- 标签 / 文末 ---------- */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:44px;}
.tag{
  display:inline-flex;align-items:center;min-height:34px;padding:6px 14px;border-radius:var(--r-pill);
  font-size:13px;color:var(--txt-2);background:var(--glass);border:1px solid var(--line);
  transition:all .2s ease-out;
}
.tag:hover{color:#fff;border-color:rgba(45,226,230,.55);box-shadow:0 0 16px -6px rgba(45,226,230,.7);}

.section{padding:56px 0;}
@media (min-width:1024px){.section{padding:88px 0;}}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:28px;}
.section-title{position:relative;padding-left:15px;font-size:clamp(21px,2.6vw,30px);font-weight:700;line-height:1.3;}
.section-title::before{
  content:"";position:absolute;left:0;top:8px;bottom:8px;width:4px;border-radius:2px;
  background:linear-gradient(180deg,var(--cyan),var(--purple));box-shadow:0 0 14px rgba(45,226,230,.6);
}
.section-sub{margin-top:10px;font-size:15px;color:var(--txt-3);max-width:640px;}
.text-link{font-size:14px;color:var(--cyan-soft);display:inline-flex;align-items:center;gap:6px;transition:gap .2s ease-out,color .2s ease-out;}
.text-link:hover{color:#fff;gap:10px;}

.card-grid{display:grid;grid-template-columns:1fr;gap:20px;}
@media (min-width:640px){.card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media (min-width:1024px){.card-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}}
.media-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08);
  transition:transform .22s ease-out,border-color .22s ease-out,box-shadow .22s ease-out;
}
.media-card:hover{transform:translateY(-2px);border-color:rgba(45,226,230,.55);box-shadow:var(--shadow-glow);}
.media-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:rgba(255,255,255,.04);}
.media-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease-out;}
.media-card:hover .media-thumb img{transform:scale(1.04);}
.media-body{padding:18px;display:flex;flex-direction:column;gap:10px;flex:1;}
.media-title{font-size:18px;font-weight:600;line-height:1.45;color:var(--txt);}
.media-desc{font-size:14px;line-height:1.75;color:var(--txt-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.media-foot{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:auto;font-size:12px;color:var(--txt-3);}

/* 上一篇 / 下一篇 */
.dual-nav{display:grid;grid-template-columns:1fr;gap:16px;margin-top:44px;}
@media (min-width:768px){.dual-nav{grid-template-columns:repeat(2,minmax(0,1fr));}}
.dual-card{
  display:flex;flex-direction:column;gap:10px;padding:20px;border-radius:var(--r-card);
  background:var(--glass);border:1px solid var(--line);
  transition:transform .22s ease-out,border-color .22s ease-out,box-shadow .22s ease-out;
}
.dual-card:hover{transform:translateY(-2px);border-color:rgba(45,226,230,.55);box-shadow:var(--shadow-glow);}
.dual-card span{font-size:12px;letter-spacing:.14em;color:var(--txt-3);}
.dual-card strong{font-size:16px;font-weight:600;color:var(--txt);line-height:1.5;}
.dual-card em{font-style:normal;font-size:13px;color:var(--txt-3);}

/* CTA 行动条 */
.cta-band{
  position:relative;overflow:hidden;border-radius:20px;
  border:1px solid rgba(45,226,230,.26);
  background:
    radial-gradient(700px 300px at 88% 12%, rgba(124,77,255,.24), transparent 62%),
    linear-gradient(135deg,rgba(45,226,230,.12),rgba(11,18,32,.85));
  box-shadow:var(--shadow-soft);
  padding:32px 22px;
}
@media (min-width:1024px){.cta-band{padding:46px 44px;}}
.cta-band h2{font-size:clamp(21px,2.4vw,30px);font-weight:700;line-height:1.35;}
.cta-band p{margin-top:12px;font-size:15px;color:var(--txt-2);max-width:640px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px;}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:64px;border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(5,7,15,.4),rgba(5,7,15,.92));
  padding-top:56px;
}
.site-footer::before{
  content:"";display:block;height:1px;margin-top:-57px;
  background:linear-gradient(90deg,transparent,rgba(45,226,230,.6),transparent);
}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px;padding-bottom:40px;}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;}}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.8;color:var(--txt-3);max-width:340px;}
.footer-title{font-size:14px;font-weight:600;color:var(--txt);letter-spacing:.06em;margin-bottom:14px;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{font-size:14px;color:var(--txt-3);transition:color .2s ease-out,padding-left .2s ease-out;}
.footer-links a:hover{color:var(--txt);padding-left:3px;}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  padding:22px 0 30px;border-top:1px solid var(--line);font-size:13px;color:var(--txt-3);
}
.footer-bottom .mono{font-size:12px;color:var(--txt-3);}

/* 空态 */
.empty-state{
  display:flex;flex-direction:column;align-items:center;gap:16px;text-align:center;
  padding:56px 24px;border-radius:var(--r-card);
  background:var(--glass);border:1px dashed var(--line-strong);
}
.empty-mark{
  width:60px;height:60px;display:grid;place-items:center;border-radius:50%;
  background:rgba(45,226,230,.10);border:1px solid rgba(45,226,230,.35);color:var(--cyan-soft);
  font-size:22px;
}
.empty-state h2{font-size:19px;font-weight:600;}
.empty-state p{font-size:14px;color:var(--txt-3);max-width:420px;}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none !important;animation:none !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category1 */
:root{
  --bg-0:#070B16;--bg-1:#0B1220;--bg-2:#05070F;
  --cyan:#2DE2E6;--cyan-dim:rgba(45,226,230,.14);
  --purple:#7C4DFF;--purple-dim:rgba(124,77,255,.16);
  --gold:#FFC857;
  --text:#E8EEF9;--text-2:#A9B6CC;--text-3:#6B7A93;
  --line:rgba(255,255,255,.08);--line-strong:rgba(255,255,255,.16);
  --glass:rgba(255,255,255,.045);--glass-2:rgba(255,255,255,.07);
  --r-lg:16px;--r-md:12px;--r-sm:10px;
  --shadow-card:0 0 0 1px rgba(255,255,255,.06), 0 18px 40px -22px rgba(45,226,230,.35);
  --shadow-soft:0 0 0 1px rgba(255,255,255,.05), 0 14px 30px -20px rgba(5,7,15,.9);
  --container:1200px;
  --font-cn:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-num:ui-monospace,"SF Mono",Consolas,"Roboto Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;font-family:var(--font-cn);color:var(--text);
  background:linear-gradient(180deg,var(--bg-0) 0%,var(--bg-1) 42%,var(--bg-2) 100%);
  background-attachment:fixed;
  font-size:16px;line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none;transition:color .2s ease-out,opacity .2s ease-out}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:6px}
.mono{font-family:var(--font-num);letter-spacing:.02em}

.container-x{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px}
@media(min-width:768px){.container-x{padding:0 32px}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,11,22,.55);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  border-image:linear-gradient(90deg,rgba(45,226,230,0),rgba(45,226,230,.75),rgba(124,77,255,.35),rgba(45,226,230,0)) 1;
  transition:background .25s ease-out,box-shadow .25s ease-out;
}
.site-header.is-scrolled{background:rgba(7,11,22,.92);box-shadow:0 10px 30px -22px rgba(45,226,230,.5)}
.nav-wrap{display:flex;align-items:center;gap:18px;height:64px}
@media(min-width:1024px){.nav-wrap{height:72px;gap:28px}}
.brand{display:flex;align-items:center;gap:10px;min-height:44px}
.brand-mark{width:32px;height:32px;display:grid;place-items:center;border-radius:10px;
  background:linear-gradient(140deg,rgba(45,226,230,.22),rgba(124,77,255,.22));
  box-shadow:0 0 0 1px rgba(255,255,255,.10),0 8px 20px -14px rgba(45,226,230,.8)}
.brand-mark svg{width:20px;height:20px}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:15px;font-weight:700;letter-spacing:.02em}
.brand-text em{font-size:11px;font-style:normal;color:var(--cyan);letter-spacing:.16em}
.nav-desktop{display:none;align-items:center;gap:6px;margin-left:auto}
@media(min-width:1024px){.nav-desktop{display:flex}}
.nav-link{
  position:relative;display:inline-flex;align-items:center;min-height:44px;padding:0 14px;
  font-size:15px;color:var(--text-2);border-radius:var(--r-sm);transition:color .2s ease-out,background .2s ease-out;
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.05)}
.nav-link.is-active{color:var(--cyan);text-shadow:0 0 14px rgba(45,226,230,.55)}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,rgba(45,226,230,.2),var(--cyan),rgba(124,77,255,.5));
  box-shadow:0 0 12px rgba(45,226,230,.8);
}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
@media(min-width:1024px){.nav-actions{margin-left:0}}
.menu-toggle{
  width:44px;height:44px;display:grid;place-items:center;border-radius:var(--r-sm);
  background:rgba(255,255,255,.06);border:1px solid var(--line);cursor:pointer;
}
@media(min-width:1024px){.menu-toggle{display:none}}
.menu-toggle span{width:18px;height:2px;background:var(--text);border-radius:2px;position:relative;display:block}
.menu-toggle span::before,.menu-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);border-radius:2px;transition:transform .2s ease-out
}
.menu-toggle span::before{top:-6px}
.menu-toggle span::after{top:6px}
.mobile-drawer{
  display:none;flex-direction:column;gap:4px;padding:14px 20px 22px;
  background:rgba(7,11,22,.97);border-top:1px solid var(--line);
  backdrop-filter:blur(18px);
}
.mobile-drawer.is-open{display:flex;animation:drawerIn .22s ease-out}
@keyframes drawerIn{from{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:none}}
.mobile-drawer .nav-link{width:100%;border-radius:var(--r-sm)}
@media(min-width:1024px){.mobile-drawer{display:none!important}}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 22px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;letter-spacing:.01em;cursor:pointer;
  border:1px solid transparent;transition:all .2s ease-out;
}
.btn-sm{min-height:44px;padding:0 18px;font-size:14px}
.btn-primary{
  background:linear-gradient(135deg,var(--cyan),#4be9ec 55%,#7df3f6);
  color:#05121a;box-shadow:0 10px 28px -14px rgba(45,226,230,.9);
}
.btn-primary:hover{filter:brightness(1.07);box-shadow:0 0 0 1px rgba(45,226,230,.6),0 14px 34px -12px rgba(45,226,230,.95)}
.btn-ghost{
  background:var(--glass);border-color:var(--line-strong);color:var(--text);
}
.btn-ghost:hover{border-color:rgba(45,226,230,.55);color:var(--cyan);background:rgba(45,226,230,.08)}
.btn-purple{
  background:rgba(124,77,255,.16);border-color:rgba(124,77,255,.5);color:#D7CBFF;
}
.btn-purple:hover{background:rgba(124,77,255,.28);color:#fff}

/* ---------- generic ---------- */
.tag{
  display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;
  font-size:12px;letter-spacing:.04em;border:1px solid var(--line-strong);
  background:var(--glass);color:var(--text-2);
}
.tag-cyan{color:#9FF6F8;border-color:rgba(45,226,230,.45);background:rgba(45,226,230,.10)}
.tag-purple{color:#D7CBFF;border-color:rgba(124,77,255,.45);background:rgba(124,77,255,.12)}
.tag-gold{color:#FFE0A3;border-color:rgba(255,200,87,.42);background:rgba(255,200,87,.10)}
.dot{width:7px;height:7px;border-radius:50%;background:var(--cyan);box-shadow:0 0 10px var(--cyan);display:inline-block}
.dot-purple{background:var(--purple);box-shadow:0 0 10px var(--purple)}
.dot-gold{background:var(--gold);box-shadow:0 0 10px var(--gold)}

.section{padding:64px 0}
@media(min-width:1024px){.section{padding:96px 0}}
.section-head{max-width:760px;margin-bottom:36px}
.section-head h2{
  font-size:clamp(22px,2.6vw,32px);font-weight:700;line-height:1.3;letter-spacing:.01em;
  padding-left:14px;position:relative;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:8px;bottom:8px;width:4px;border-radius:4px;
  background:linear-gradient(180deg,var(--cyan),rgba(124,77,255,.7));box-shadow:0 0 14px rgba(45,226,230,.7);
}
.section-head p{margin-top:12px;color:var(--text-2);font-size:16px}
.card{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-lg);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  box-shadow:var(--shadow-soft);transition:transform .22s ease-out,border-color .22s ease-out,box-shadow .22s ease-out;
}
.card:hover{transform:translateY(-2px);border-color:rgba(45,226,230,.5);box-shadow:var(--shadow-card)}
.divider{height:1px;background:linear-gradient(90deg,transparent,rgba(45,226,230,.45),rgba(124,77,255,.35),transparent)}

/* ---------- hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  min-height:280px;display:flex;align-items:center;
  padding:52px 0 56px;
  background-image:linear-gradient(115deg,rgba(7,11,22,.94) 0%,rgba(11,18,32,.80) 48%,rgba(124,77,255,.30) 100%),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
@media(min-width:1024px){.page-hero{min-height:320px;padding:64px 0 68px}}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(900px 320px at 12% 0%,rgba(45,226,230,.16),transparent 62%),
             radial-gradient(700px 300px at 92% 100%,rgba(124,77,255,.18),transparent 60%);
}
.hero-inner{position:relative;z-index:2;max-width:820px}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:16px}
.crumb a{color:var(--text-3)}
.crumb a:hover{color:var(--cyan)}
.crumb span.sep{color:rgba(107,122,147,.7)}
.crumb .current{color:var(--text-2)}
.page-hero h1{
  font-size:clamp(28px,4.4vw,50px);font-weight:700;line-height:1.2;letter-spacing:.01em;
}
.page-hero h1 .accent{
  background:linear-gradient(120deg,var(--cyan),#9FF6F8 45%,#C3B4FF);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-lead{margin-top:16px;color:var(--text-2);font-size:16px;max-width:660px}
.hero-lead strong{color:var(--text);font-weight:600}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}

/* ---------- status strip ---------- */
.status-strip{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;
  margin-top:28px;
}
@media(min-width:768px){.status-strip{grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}}
.status-item{background:var(--glass);border:1px solid var(--line);border-radius:var(--r-md);padding:14px 16px}
.status-item .k{font-size:12px;color:var(--text-3);letter-spacing:.06em}
.status-item .v{font-family:var(--font-num);font-size:20px;color:var(--cyan);letter-spacing:.02em;margin-top:4px}
.status-item .v.gold{color:var(--gold)}
.status-item .s{font-size:12px;color:var(--text-3);margin-top:2px}

/* ---------- rail grid (左窄列表 + 右宽说明卡) ---------- */
.rail-grid{display:grid;grid-template-columns:1fr;gap:24px}
@media(min-width:1024px){.rail-grid{grid-template-columns:340px minmax(0,1fr);gap:28px;align-items:start}}
.rail-side{position:relative}
@media(min-width:1024px){.rail-side{position:sticky;top:96px}}
.rail-title{
  font-size:13px;letter-spacing:.14em;color:var(--text-3);text-transform:uppercase;
  margin-bottom:14px;padding-left:12px;position:relative;
}
.rail-title::before{content:"";position:absolute;left:0;top:6px;width:3px;height:14px;border-radius:3px;background:var(--cyan);box-shadow:0 0 10px var(--cyan)}
.rail-list{display:flex;flex-direction:column;gap:10px}
.rail-item{
  display:flex;align-items:center;gap:12px;min-height:64px;padding:12px 14px;
  border-radius:var(--r-md);background:var(--glass);border:1px solid var(--line);
  transition:all .2s ease-out;
}
.rail-item:hover{border-color:rgba(45,226,230,.55);background:rgba(45,226,230,.07);transform:translateX(2px)}
.rail-item .name{font-size:15px;font-weight:600}
.rail-item .meta{font-size:12px;color:var(--text-3);font-family:var(--font-num)}
.rail-item .grow{flex:1;min-width:0}
.rail-note{margin-top:16px;font-size:13px;color:var(--text-3);line-height:1.7}

.rail-main{display:flex;flex-direction:column;gap:22px}
.detail-card{
  display:grid;grid-template-columns:1fr;gap:0;overflow:hidden;
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-lg);
  backdrop-filter:blur(16px);transition:transform .22s ease-out,border-color .22s ease-out,box-shadow .22s ease-out;
}
.detail-card:hover{transform:translateY(-2px);border-color:rgba(45,226,230,.5);box-shadow:var(--shadow-card)}
@media(min-width:768px){
  .detail-card{grid-template-columns:220px minmax(0,1fr)}
  .detail-card.flip{grid-template-columns:minmax(0,1fr) 220px}
  .detail-card.flip .detail-media{order:2}
  .detail-card.flip .detail-body{order:1}
  .detail-card:nth-child(2){margin-left:28px}
  .detail-card:nth-child(3){margin-right:28px}
}
.detail-media{position:relative;min-height:180px;overflow:hidden;background:#0A1020}
.detail-media img{width:100%;height:100%;object-fit:cover;min-height:180px;opacity:.9}
.detail-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,11,22,.15),rgba(7,11,22,.72))}
.detail-body{padding:20px 20px 22px;display:flex;flex-direction:column;gap:10px}
@media(min-width:768px){.detail-body{padding:24px 26px}}
.detail-body h3{font-size:19px;font-weight:600;line-height:1.4}
.detail-body p{font-size:15px;color:var(--text-2);line-height:1.75}
.detail-points{display:flex;flex-wrap:wrap;gap:8px}
.detail-points li{
  font-size:12px;color:var(--text-2);padding:3px 10px;border-radius:999px;
  border:1px solid var(--line);background:rgba(255,255,255,.03);
}
.detail-link{
  margin-top:auto;padding-top:8px;display:inline-flex;align-items:center;gap:6px;
  color:var(--cyan);font-size:14px;font-weight:600;min-height:44px;
}
.detail-link:hover{gap:10px;text-shadow:0 0 12px rgba(45,226,230,.6)}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:1fr;gap:16px;counter-reset:step}
@media(min-width:768px){.steps{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}}
@media(min-width:1024px){.steps{grid-template-columns:repeat(4,minmax(0,1fr))}}
.step{
  position:relative;padding:22px 20px 24px;border-radius:var(--r-lg);
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  border:1px solid var(--line);
}
.step::before{
  counter-increment:step;content:"0" counter(step);
  font-family:var(--font-num);font-size:13px;letter-spacing:.1em;color:var(--cyan);opacity:.85;
}
.step h3{margin-top:8px;font-size:17px;font-weight:600}
.step p{margin-top:8px;font-size:14px;color:var(--text-2);line-height:1.75}

/* ---------- scene list (紧凑横向两列) ---------- */
.scene-grid{display:grid;grid-template-columns:1fr;gap:12px}
@media(min-width:768px){.scene-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}}
.scene-item{
  display:flex;gap:14px;padding:16px 18px;border-radius:var(--r-md);
  background:var(--glass);border:1px solid var(--line);transition:all .2s ease-out;
}
.scene-item:hover{border-color:rgba(124,77,255,.5);background:rgba(124,77,255,.08)}
.scene-item .idx{
  flex:0 0 auto;width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  font-family:var(--font-num);font-size:13px;color:#D7CBFF;background:rgba(124,77,255,.16);
  border:1px solid rgba(124,77,255,.32);
}
.scene-item h3{font-size:16px;font-weight:600}
.scene-item p{margin-top:4px;font-size:14px;color:var(--text-2);line-height:1.7}

/* ---------- faq ---------- */
.faq-wrap{max-width:860px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
.faq-item{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;transition:border-color .2s ease-out,background .2s ease-out;
}
.faq-item[open]{border-color:rgba(45,226,230,.55);background:rgba(45,226,230,.05)}
.faq-item summary{
  display:flex;align-items:center;gap:14px;cursor:pointer;list-style:none;
  padding:16px 18px;min-height:56px;font-size:16px;font-weight:600;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item .num{font-family:var(--font-num);font-size:13px;color:var(--cyan);opacity:.9}
.faq-item .plus{
  margin-left:auto;flex:0 0 auto;width:24px;height:24px;position:relative;border-radius:50%;
  border:1px solid var(--line-strong);transition:transform .22s ease-out,border-color .22s ease-out;
}
.faq-item .plus::before,.faq-item .plus::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--text-2);border-radius:2px;transform:translate(-50%,-50%);
}
.faq-item .plus::before{width:11px;height:1.5px}
.faq-item .plus::after{width:1.5px;height:11px}
.faq-item[open] .plus{transform:rotate(135deg);border-color:rgba(45,226,230,.7)}
.faq-item[open] .plus::before,.faq-item[open] .plus::after{background:var(--cyan)}
.faq-answer{padding:0 18px 20px;color:var(--text-2);font-size:15px;line-height:1.85}

/* ---------- action bar ---------- */
.action-bar{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:18px;
  padding:24px;border-radius:var(--r-lg);
  background:linear-gradient(120deg,rgba(45,226,230,.13),rgba(124,77,255,.14));
  border:1px solid rgba(45,226,230,.30);
  box-shadow:0 0 0 1px rgba(255,255,255,.04),0 22px 44px -26px rgba(45,226,230,.6);
}
.action-bar h2{font-size:clamp(18px,2vw,24px);font-weight:700}
.action-bar p{margin-top:6px;font-size:14px;color:var(--text-2)}
.action-bar .acts{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- footer ---------- */
.site-footer{
  margin-top:24px;padding-top:56px;
  background:linear-gradient(180deg,rgba(255,255,255,.02),rgba(5,7,15,.9));
  border-top:1px solid var(--line);position:relative;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(45,226,230,.7),rgba(124,77,255,.5),transparent);
}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px;padding-bottom:40px}
@media(min-width:768px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}}
.footer-brand p{margin-top:16px;font-size:14px;color:var(--text-3);line-height:1.8;max-width:340px}
.footer-title{font-size:13px;letter-spacing:.14em;color:var(--text-2);margin-bottom:14px;font-weight:600}
.footer-links{display:flex;flex-direction:column;gap:2px}
.footer-links a{
  display:inline-flex;align-items:center;min-height:40px;font-size:14px;color:var(--text-3);
}
.footer-links a:hover{color:var(--text)}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;align-items:center;
  padding:20px 0 32px;border-top:1px solid var(--line);font-size:13px;color:var(--text-3);
}
.footer-bottom .mono{color:var(--text-3)}

@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .card:hover,.detail-card:hover,.rail-item:hover{transform:none}
}

/* roulang page: category2 */
:root{
    --bg-0:#070B16;
    --bg-1:#0B1220;
    --bg-2:#05070F;
    --cyan:#2DE2E6;
    --cyan-soft:#7DF3F6;
    --violet:#7C4DFF;
    --gold:#FFC857;
    --t1:#E8EEF9;
    --t2:#A9B6CC;
    --t3:#6B7A93;
    --line:rgba(255,255,255,.08);
    --line-strong:rgba(255,255,255,.14);
    --glass:rgba(255,255,255,.045);
    --radius:16px;
    --radius-sm:10px;
    --shadow:0 0 0 1px rgba(255,255,255,.06),0 18px 40px -22px rgba(45,226,230,.35);
    --container:1200px;
    --font-sans:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
    --font-mono:ui-monospace,"SF Mono","JetBrains Mono",Consolas,monospace;
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    font-family:var(--font-sans);
    font-size:16px;
    line-height:1.8;
    color:var(--t1);
    background:linear-gradient(180deg,var(--bg-0) 0%,var(--bg-1) 46%,var(--bg-2) 100%);
    background-attachment:fixed;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;}
  button,input,select,textarea{font:inherit;color:inherit;}
  button{background:none;border:0;}
  h1,h2,h3,h4,p{margin:0;}
  ul{margin:0;padding:0;list-style:none;}
  :focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:6px;}

  .container-x{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px;}
  @media (min-width:768px){.container-x{padding:0 32px;}}

  .mono{font-family:var(--font-mono);letter-spacing:.02em;}

  /* ============ Header ============ */
  .site-header{
    position:sticky;top:0;z-index:80;
    background:rgba(7,11,22,.55);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
    transition:background .24s ease,backdrop-filter .24s ease;
  }
  .site-header::after{
    content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
    background:linear-gradient(90deg,transparent,rgba(45,226,230,.8),transparent);
  }
  .site-header.is-scrolled{background:rgba(7,11,22,.92);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);}

  .nav-wrap{display:flex;align-items:center;gap:16px;height:64px;}
  @media (min-width:1024px){.nav-wrap{height:72px;}}

  .brand{display:flex;align-items:center;gap:10px;flex-shrink:0;padding:4px 0;}
  .brand-mark{
    width:34px;height:34px;display:grid;place-items:center;border-radius:12px;
    background:radial-gradient(circle at 30% 20%,rgba(45,226,230,.35),rgba(124,77,255,.2));
    border:1px solid rgba(125,243,246,.35);
    box-shadow:0 0 18px -6px rgba(45,226,230,.7);
    flex-shrink:0;
  }
  .brand-mark svg{width:20px;height:20px;}
  .brand-text{display:flex;flex-direction:column;line-height:1.15;}
  .brand-text strong{font-size:16px;font-weight:700;letter-spacing:.04em;color:var(--t1);}
  .brand-text em{font-style:normal;font-size:11px;color:var(--t3);letter-spacing:.16em;}

  .nav-desktop{display:none;}
  @media (min-width:1024px){.nav-desktop{display:flex;align-items:center;gap:4px;margin-left:auto;}}

  .nav-link{
    position:relative;
    display:inline-flex;align-items:center;
    min-height:44px;padding:10px 14px;border-radius:10px;
    font-size:15px;color:var(--t2);
    transition:color .2s ease,background .2s ease;
    white-space:nowrap;
  }
  .nav-link:hover{color:var(--t1);background:rgba(255,255,255,.04);}
  .nav-link.is-active{color:var(--cyan);text-shadow:0 0 12px rgba(45,226,230,.55);}
  .nav-link.is-active::after{
    content:"";position:absolute;left:14px;right:14px;bottom:5px;height:2px;border-radius:2px;
    background:linear-gradient(90deg,rgba(45,226,230,0),var(--cyan),rgba(45,226,230,0));
    box-shadow:0 0 10px rgba(45,226,230,.85);
  }

  .nav-actions{margin-left:auto;display:flex;align-items:center;gap:10px;}
  @media (min-width:1024px){.nav-actions{margin-left:0;}}

  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    min-height:44px;padding:0 20px;border-radius:var(--radius-sm);
    font-size:15px;font-weight:600;letter-spacing:.02em;
    border:1px solid transparent;cursor:pointer;
    transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
  }
  .btn-sm{padding:0 16px;font-size:14px;min-height:40px;}
  .btn-primary{
    background:linear-gradient(135deg,#2DE2E6,#5FD4FF);
    color:#04121A;
    box-shadow:0 0 0 1px rgba(255,255,255,.12),0 14px 30px -16px rgba(45,226,230,.85);
  }
  .btn-primary:hover{transform:translateY(-1px);box-shadow:0 0 0 1px rgba(125,243,246,.85),0 0 22px rgba(45,226,230,.5);}
  .btn-ghost{
    background:rgba(255,255,255,.05);
    border-color:var(--line-strong);
    color:var(--t1);
    backdrop-filter:blur(12px);
  }
  .btn-ghost:hover{border-color:rgba(45,226,230,.6);color:var(--cyan-soft);box-shadow:0 0 18px -6px rgba(45,226,230,.7);}
  .btn-block{width:100%;}

  .menu-toggle{
    display:grid;place-items:center;width:44px;height:44px;border-radius:12px;
    background:rgba(255,255,255,.05);border:1px solid var(--line-strong);cursor:pointer;
    transition:border-color .2s ease,background .2s ease;
  }
  .menu-toggle:hover{border-color:rgba(45,226,230,.6);}
  .menu-toggle span{display:block;position:relative;width:18px;height:2px;border-radius:2px;background:var(--t1);transition:background .2s ease;}
  .menu-toggle span::before,
  .menu-toggle span::after{
    content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--t1);
    transition:transform .24s ease,top .24s ease;
  }
  .menu-toggle span::before{top:-6px;}
  .menu-toggle span::after{top:6px;}
  .menu-toggle[aria-expanded="true"] span{background:transparent;}
  .menu-toggle[aria-expanded="true"] span::before{top:0;transform:rotate(45deg);}
  .menu-toggle[aria-expanded="true"] span::after{top:0;transform:rotate(-45deg);}
  @media (min-width:1024px){.menu-toggle{display:none;}}

  .mobile-drawer{
    position:fixed;top:64px;left:0;right:0;bottom:0;
    display:flex;flex-direction:column;gap:6px;
    padding:18px 22px 36px;
    background:rgba(5,7,15,.97);
    backdrop-filter:blur(18px);
    border-top:1px solid var(--line);
    overflow-y:auto;
    opacity:0;transform:translateY(-10px);pointer-events:none;
    transition:opacity .24s ease,transform .24s ease;
  }
  .mobile-drawer.is-open{opacity:1;transform:translateY(0);pointer-events:auto;}
  .mobile-drawer .nav-link{font-size:16px;min-height:48px;padding:12px 14px;}
  .mobile-drawer .nav-link.is-active::after{left:14px;right:auto;width:22px;}
  @media (min-width:1024px){.mobile-drawer{display:none;}}
  body.no-scroll{overflow:hidden;}

  /* ============ Hero ============ */
  .hero-cat{position:relative;overflow:hidden;border-bottom:1px solid var(--line);}
  .hero-cat-bg{
    position:absolute;inset:0;
    background-image:url('/assets/images/backpic/back-1.png');
    background-size:cover;background-position:center;
    transform:scale(1.03);
  }
  .hero-cat::after{
    content:"";position:absolute;inset:0;
    background:
      linear-gradient(180deg,rgba(7,11,22,.74) 0%,rgba(7,11,22,.9) 60%,var(--bg-0) 100%),
      radial-gradient(900px 320px at 12% 0%,rgba(45,226,230,.22),transparent 70%),
      radial-gradient(760px 300px at 92% 18%,rgba(124,77,255,.22),transparent 72%);
  }
  .hero-cat .container-x{position:relative;z-index:2;}
  .hero-cat-inner{padding:34px 0 42px;min-height:260px;display:flex;flex-direction:column;justify-content:center;}
  @media (min-width:1024px){.hero-cat-inner{padding:46px 0 56px;min-height:310px;}}

  .breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--t3);margin-bottom:18px;}
  .breadcrumb a{color:var(--t2);transition:color .2s ease;}
  .breadcrumb a:hover{color:var(--cyan-soft);}
  .breadcrumb .sep{opacity:.5;}

  .hero-cat h1{
    font-size:clamp(28px,4.4vw,46px);
    font-weight:700;line-height:1.18;letter-spacing:.01em;
    max-width:820px;
  }
  .hero-cat h1 .hl{
    display:block;
    background:linear-gradient(100deg,#7DF3F6,#2DE2E6 42%,#A78BFA 96%);
    -webkit-background-clip:text;background-clip:text;color:transparent;
  }
  .hero-lead{margin-top:16px;max-width:720px;color:var(--t2);font-size:16px;line-height:1.85;}
  .hero-lead + .hero-lead{margin-top:8px;}
  .hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}

  .badge{
    display:inline-flex;align-items:center;gap:6px;
    padding:5px 12px;border-radius:999px;
    font-size:12.5px;line-height:1.4;
    background:rgba(45,226,230,.1);
    border:1px solid rgba(45,226,230,.32);
    color:var(--cyan-soft);
  }
  .badge-violet{background:rgba(124,77,255,.12);border-color:rgba(124,77,255,.4);color:#C3AEFF;}
  .badge-gold{background:rgba(255,200,87,.1);border-color:rgba(255,200,87,.36);color:#FFD98A;}
  .badge-plain{background:rgba(255,255,255,.05);border-color:var(--line-strong);color:var(--t2);}

  /* ============ Section base ============ */
  .section{padding:64px 0;}
  @media (min-width:1024px){.section{padding:92px 0;}}
  .section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:32px;}
  .section-title{
    display:flex;align-items:center;gap:12px;
    font-size:clamp(22px,2.6vw,32px);font-weight:700;line-height:1.3;
  }
  .section-title::before{
    content:"";width:4px;height:22px;border-radius:2px;flex-shrink:0;
    background:linear-gradient(180deg,var(--cyan),var(--violet));
    box-shadow:0 0 12px rgba(45,226,230,.75);
  }
  .section-sub{margin-top:10px;color:var(--t2);font-size:15px;max-width:720px;}

  /* ============ 标签筛选 + 图文卡 ============ */
  .tag-bar{display:flex;gap:10px;overflow-x:auto;padding:4px 2px 12px;margin-bottom:26px;scrollbar-width:none;}
  .tag-bar::-webkit-scrollbar{display:none;}
  .tag-chip{
    flex:0 0 auto;min-height:42px;padding:0 18px;border-radius:999px;
    border:1px solid rgba(255,255,255,.12);background:rgba(255,255,255,.04);
    color:var(--t2);font-size:14px;cursor:pointer;
    transition:color .2s ease,border-color .2s ease,background .2s ease,box-shadow .2s ease;
  }
  .tag-chip:hover{color:var(--t1);border-color:rgba(45,226,230,.45);}
  .tag-chip.is-active{
    color:#04121A;font-weight:600;
    background:linear-gradient(135deg,#2DE2E6,#5FD4FF);
    border-color:transparent;
    box-shadow:0 0 18px -4px rgba(45,226,230,.75);
  }

  .card-grid{display:grid;gap:20px;}
  @media (min-width:768px){.card-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}}

  .feature-card{
    display:flex;flex-direction:column;
    border-radius:var(--radius);
    background:var(--glass);
    border:1px solid rgba(255,255,255,.10);
    backdrop-filter:blur(18px);
    box-shadow:inset 0 1px 0 rgba(255,255,255,.08);
    overflow:hidden;
    transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
  }
  .feature-card:hover{
    transform:translateY(-3px);
    border-color:rgba(45,226,230,.55);
    box-shadow:0 0 0 1px rgba(45,226,230,.25),0 20px 44px -24px rgba(45,226,230,.6);
  }
  .feature-media{position:relative;overflow:hidden;}
  .feature-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .5s ease;}
  .feature-card:hover .feature-media img{transform:scale(1.04);}
  .feature-media::after{
    content:"";position:absolute;inset:0;
    background:linear-gradient(180deg,rgba(7,11,22,.05),rgba(7,11,22,.7));
  }
  .feature-media .media-badge{position:absolute;left:14px;top:14px;z-index:2;}
  .feature-body{padding:20px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
  .feature-body h3{font-size:19px;font-weight:600;line-height:1.4;color:var(--t1);}
  .feature-body p{color:var(--t2);font-size:14.5px;line-height:1.75;}
  .feature-meta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:auto;padding-top:12px;border-top:1px solid var(--line);font-size:13px;color:var(--t3);}
  .feature-link{color:var(--cyan-soft);font-weight:600;font-size:14px;display:inline-flex;align-items:center;gap:6px;transition:gap .2s ease,color .2s ease;}
  .feature-link:hover{gap:10px;color:#9BF8FA;}
  .hide{display:none !important;}

  .empty-note{
    border:1px dashed rgba(255,255,255,.16);
    border-radius:var(--radius);
    padding:34px 20px;text-align:center;color:var(--t3);font-size:14.5px;
    background:rgba(255,255,255,.02);
  }

  /* ============ 数据看点 ============ */
  .metrics-grid{display:grid;gap:16px;grid-template-columns:repeat(2,minmax(0,1fr));}
  @media (min-width:1024px){.metrics-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;}}
  .metric-card{
    border-radius:var(--radius);padding:18px;
    background:rgba(255,255,255,.05);
    border:1px solid rgba(255,255,255,.10);
    backdrop-filter:blur(16px);
    box-shadow:inset 0 1px 0 rgba(255,255,255,.08);
    transition:border-color .22s ease,transform .22s ease;
  }
  .metric-card:hover{border-color:rgba(45,226,230,.45);transform:translateY(-2px);}
  .metric-name{font-size:13px;color:var(--t3);letter-spacing:.08em;}
  .metric-value{font-family:var(--font-mono);font-size:clamp(24px,3vw,32px);font-weight:700;color:var(--cyan);margin-top:8px;line-height:1.2;}
  .metric-value small{font-size:14px;color:var(--t2);font-family:var(--font-sans);margin-left:3px;font-weight:500;}
  .metric-note{margin-top:6px;font-size:12.5px;color:var(--t3);}
  .bar{height:6px;border-radius:999px;background:rgba(255,255,255,.07);overflow:hidden;margin-top:12px;}
  .bar > i{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--cyan),var(--violet));box-shadow:0 0 12px rgba(45,226,230,.55);}
  .bar-gold > i{background:linear-gradient(90deg,var(--gold),#FF9F45);box-shadow:0 0 12px rgba(255,200,87,.5);}

  .rank-list{display:grid;gap:14px;margin-top:34px;}
  @media (min-width:1024px){.rank-list{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px 24px;}}
  .rank-item{
    display:flex;align-items:center;gap:16px;
    padding:16px 18px;border-radius:14px;
    background:rgba(255,255,255,.04);
    border:1px solid var(--line);
    transition:border-color .22s ease,background .22s ease;
  }
  .rank-item:hover{border-color:rgba(45,226,230,.4);background:rgba(255,255,255,.06);}
  .rank-no{
    font-family:var(--font-mono);font-size:18px;font-weight:700;color:var(--cyan);
    min-width:34px;text-align:center;
  }
  .rank-body{flex:1;min-width:0;}
  .rank-body strong{display:block;font-size:15.5px;font-weight:600;color:var(--t1);}
  .rank-body span{display:block;font-size:13px;color:var(--t3);}
  .rank-val{font-family:var(--font-mono);font-size:15px;color:var(--gold);white-space:nowrap;}

  /* ============ 更新日历 ============ */
  .cal-grid{display:grid;gap:12px;grid-template-columns:repeat(2,minmax(0,1fr));}
  @media (min-width:768px){.cal-grid{grid-template-columns:repeat(4,minmax(0,1fr));}}
  @media (min-width:1024px){.cal-grid{grid-template-columns:repeat(7,minmax(0,1fr));}}
  .cal-cell{
    border-radius:14px;padding:16px 14px;
    background:rgba(255,255,255,.04);
    border:1px solid var(--line);
    transition:border-color .22s ease,transform .22s ease;
  }
  .cal-cell:hover{border-color:rgba(45,226,230,.45);transform:translateY(-2px);}
  .cal-cell .day{font-family:var(--font-mono);font-size:12px;color:var(--t3);letter-spacing:.12em;}
  .cal-cell .txt{font-size:14.5px;color:var(--t1);margin-top:8px;line-height:1.6;}
  .cal-cell .dot{display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--cyan);box-shadow:0 0 8px rgba(45,226,230,.9);margin-right:8px;vertical-align:middle;}
  .cal-cell .dot-violet{background:var(--violet);box-shadow:0 0 8px rgba(124,77,255,.9);}

  /* ============ 读法步骤 ============ */
  .step-grid{display:grid;gap:20px;}
  @media (min-width:768px){.step-grid{grid-template-columns:repeat(3,minmax(0,1fr));}}
  .step-card{
    position:relative;
    border-radius:var(--radius);padding:26px 22px;
    background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
    border:1px solid rgba(255,255,255,.10);
    backdrop-filter:blur(16px);
    transition:border-color .22s ease,transform .22s ease;
  }
  .step-card:hover{border-color:rgba(45,226,230,.5);transform:translateY(-3px);}
  .step-no{
    font-family:var(--font-mono);font-size:13px;letter-spacing:.14em;color:var(--cyan-soft);
    display:inline-flex;align-items:center;gap:8px;margin-bottom:14px;
  }
  .step-no::before{content:"";width:18px;height:1px;background:rgba(45,226,230,.7);}
  .step-card h3{font-size:18px;font-weight:600;margin-bottom:10px;color:var(--t1);}
  .step-card p{font-size:14.5px;color:var(--t2);line-height:1.8;}

  /* ============ FAQ ============ */
  .faq-wrap{max-width:880px;margin:0 auto;display:grid;gap:14px;}
  .faq-item{
    border-radius:var(--radius);
    background:var(--glass);
    border:1px solid rgba(255,255,255,.10);
    backdrop-filter:blur(16px);
    overflow:hidden;
    transition:border-color .22s ease,box-shadow .22s ease;
  }
  .faq-item.is-open{border-color:rgba(45,226,230,.55);box-shadow:0 0 0 1px rgba(45,226,230,.18),0 18px 40px -26px rgba(45,226,230,.6);}
  .faq-q{
    width:100%;display:flex;align-items:center;gap:14px;
    padding:18px 20px;text-align:left;cursor:pointer;
    font-size:16px;font-weight:600;color:var(--t1);
    transition:color .2s ease;
  }
  .faq-q:hover{color:var(--cyan-soft);}
  .faq-q .idx{font-family:var(--font-mono);font-size:13px;color:var(--t3);min-width:26px;}
  .faq-q .plus{
    margin-left:auto;flex-shrink:0;
    width:26px;height:26px;border-radius:50%;
    display:grid;place-items:center;
    border:1px solid rgba(45,226,230,.4);
    color:var(--cyan);font-size:15px;line-height:1;
    transition:transform .26s ease,background .26s ease,color .26s ease;
  }
  .faq-item.is-open .plus{transform:rotate(135deg);background:rgba(45,226,230,.16);}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .32s ease;}
  .faq-a p{padding:0 20px 20px 60px;color:var(--t2);font-size:15px;line-height:1.85;}
  @media (max-width:520px){.faq-a p{padding-left:20px;}}

  /* ============ CTA / 联系 ============ */
  .cta-band{
    position:relative;overflow:hidden;
    border-radius:20px;padding:34px 26px;
    background:linear-gradient(135deg,rgba(45,226,230,.14),rgba(124,77,255,.14));
    border:1px solid rgba(45,226,230,.3);
    box-shadow:0 0 0 1px rgba(255,255,255,.05),0 24px 60px -34px rgba(45,226,230,.65);
  }
  .cta-band::before{
    content:"";position:absolute;inset:-40% -10% auto auto;width:420px;height:420px;
    background:radial-gradient(circle,rgba(45,226,230,.28),transparent 68%);
    pointer-events:none;
  }
  @media (min-width:1024px){.cta-band{padding:46px 44px;}}
  .cta-inner{position:relative;display:grid;gap:24px;}
  @media (min-width:1024px){.cta-inner{grid-template-columns:1.35fr 1fr;align-items:center;}}
  .cta-band h2{font-size:clamp(21px,2.4vw,28px);font-weight:700;line-height:1.35;}
  .cta-band p{margin-top:12px;color:var(--t2);font-size:15px;line-height:1.85;max-width:620px;}
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px;}

  .info-card{
    border-radius:var(--radius);padding:22px;
    background:rgba(5,7,15,.55);
    border:1px solid rgba(255,255,255,.12);
    backdrop-filter:blur(16px);
  }
  .info-card h3{font-size:16px;font-weight:600;margin-bottom:14px;color:var(--t1);}
  .info-row{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--t2);padding:7px 0;}
  .info-row i{color:var(--cyan);width:16px;text-align:center;}

  .form-grid{display:grid;gap:16px;}
  @media (min-width:768px){.form-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
  .field{display:flex;flex-direction:column;gap:8px;}
  .field-full{grid-column:1 / -1;}
  .field label{font-size:13.5px;color:var(--t2);letter-spacing:.04em;}
  .field input,.field select,.field textarea{
    width:100%;min-height:46px;padding:11px 14px;
    border-radius:var(--radius-sm);
    background:rgba(255,255,255,.05);
    border:1px solid var(--line-strong);
    color:var(--t1);font-size:15px;
    transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
  }
  .field textarea{min-height:120px;resize:vertical;line-height:1.7;}
  .field input::placeholder,.field textarea::placeholder{color:var(--t3);}
  .field input:focus,.field select:focus,.field textarea:focus{
    outline:none;
    border-color:var(--cyan);
    background:rgba(255,255,255,.07);
    box-shadow:0 0 0 4px rgba(45,226,230,.16);
  }
  .form-note{font-size:12.5px;color:var(--t3);margin-top:12px;line-height:1.7;}

  /* ============ Footer ============ */
  .site-footer{
    position:relative;margin-top:72px;
    background:linear-gradient(180deg,rgba(5,7,15,.6),rgba(5,7,15,.96));
    border-top:1px solid var(--line);
  }
  .site-footer::before{
    content:"";position:absolute;left:0;right:0;top:0;height:1px;
    background:linear-gradient(90deg,transparent,rgba(45,226,230,.75),transparent);
  }
  .footer-grid{display:grid;gap:32px;padding:56px 0 34px;}
  @media (min-width:768px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr;}}
  .footer-brand .brand{margin-bottom:16px;}
  .footer-brand p{font-size:14px;color:var(--t3);line-height:1.85;max-width:360px;}
  .footer-title{font-size:14px;font-weight:600;color:var(--t1);letter-spacing:.08em;margin-bottom:16px;}
  .footer-links{display:flex;flex-direction:column;gap:11px;}
  .footer-links a{font-size:14px;color:var(--t2);transition:color .2s ease;width:fit-content;}
  .footer-links a:hover{color:var(--t1);}
  .footer-bottom{
    display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
    padding:20px 0 30px;border-top:1px solid var(--line);
    font-size:13px;color:var(--t3);
  }

  @media (prefers-reduced-motion:reduce){
    *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
    html{scroll-behavior:auto;}
  }