/* roulang page: index */
:root{
    --brand:#2BE8B8; --brand-hover:#19C79C; --brand-active:#12A87F;
    --accent:#FF6A2B; --accent-hover:#E85618;
    --violet:#7A5CFF; --info:#4FA3FF;
    --bg:#060912; --surface:#0B1222; --surface-2:#0E1730;
    --text-1:#EAF0FF; --text-2:#9FB0CC; --text-3:#6C7C99;
    --line:rgba(255,255,255,.10);
    --glass:rgba(255,255,255,.06);
    --radius-card:18px; --radius-btn:12px; --radius-img:14px;
    --shadow-card:0 18px 40px rgba(3,7,18,.55);
    --ease:cubic-bezier(.2,.7,.3,1);
  }
  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
  body{
    margin:0;background:var(--bg);color:var(--text-1);
    font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
    font-size:16px;line-height:1.8;-webkit-font-smoothing:antialiased;
  }
  body::before{
    content:'';position:fixed;inset:0 0 auto 0;height:640px;pointer-events:none;z-index:0;
    background:radial-gradient(60% 60% at 22% 0%, rgba(43,232,184,.08) 0%, transparent 70%);
  }
  img{max-width:100%;display:block}
  a{color:inherit;text-decoration:none;transition:color .2s var(--ease)}
  button,input,select,textarea{font:inherit;color:inherit}
  :focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
  .num{font-family:"Barlow","DIN Alternate",system-ui,sans-serif;font-variant-numeric:tabular-nums}
  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
  @media (min-width:768px){.container{padding:0 32px}}

  /* 导航 */
  #siteHeader{position:fixed;top:0;left:0;right:0;z-index:60}
  .nav-shell{background:transparent;border-bottom:1px solid transparent;transition:background .2s var(--ease),backdrop-filter .2s var(--ease),border-color .2s var(--ease)}
  #siteHeader.scrolled .nav-shell{background:rgba(6,9,18,.82);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom-color:var(--line)}
  .topbar{height:64px;transition:height .2s var(--ease)}
  #siteHeader.scrolled .topbar{height:56px}
  .brand-mark{width:30px;height:30px;border-radius:9px;background:linear-gradient(135deg,var(--brand),#0FA57E);display:grid;place-items:center;color:#04140F;font-weight:800;font-size:15px;box-shadow:0 0 0 1px rgba(43,232,184,.35),0 8px 20px rgba(43,232,184,.22)}
  .brand-text{font-weight:800;letter-spacing:-.01em;font-size:17px}
  .brand-sub{font-size:11px;color:var(--text-3);letter-spacing:.14em;text-transform:uppercase}
  .navlink{position:relative;padding:6px 2px;font-size:14px;color:var(--text-2);white-space:nowrap}
  .navlink:hover{color:var(--text-1)}
  .navlink.active{color:var(--brand)}
  .navlink.active::after{content:'';position:absolute;left:0;right:0;bottom:-9px;height:2px;border-radius:2px;background:var(--brand);box-shadow:0 0 12px rgba(43,232,184,.7)}
  .channel-bar{border-top:1px solid rgba(255,255,255,.06);height:46px;display:flex;align-items:center;overflow-x:auto;scrollbar-width:none}
  .channel-bar::-webkit-scrollbar{display:none}
  .chip{display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:999px;border:1px solid var(--line);background:rgba(255,255,255,.04);font-size:12px;color:var(--text-2);white-space:nowrap;transition:all .2s var(--ease)}
  .chip:hover{color:var(--brand);border-color:rgba(43,232,184,.35);transform:translateY(-1px)}
  .search-bar{max-height:0;overflow:hidden;transition:max-height .25s var(--ease)}
  .search-bar.open{max-height:80px}
  .search-input{width:100%;background:var(--surface-2);border:1px solid var(--line);border-radius:var(--radius-btn);padding:10px 14px;font-size:14px;color:var(--text-1)}
  .search-input::placeholder{color:var(--text-3)}
  .search-input:focus{border-color:rgba(43,232,184,.55);outline:none;box-shadow:0 0 0 4px rgba(43,232,184,.12)}

  /* 抽屉 */
  .drawer{position:fixed;top:0;right:0;bottom:0;width:84%;max-width:360px;background:#080D1A;border-left:1px solid var(--line);transform:translateX(102%);transition:transform .28s var(--ease);z-index:80;overflow-y:auto}
  .drawer.open{transform:none}
  .drawer-mask{position:fixed;inset:0;background:rgba(3,6,14,.66);backdrop-filter:blur(2px);opacity:0;pointer-events:none;transition:opacity .25s var(--ease);z-index:70}
  .drawer-mask.open{opacity:1;pointer-events:auto}
  .drawer-link{display:flex;justify-content:space-between;align-items:center;padding:14px 4px;border-bottom:1px solid rgba(255,255,255,.06);font-size:15px;color:var(--text-2)}
  .drawer-link.active{color:var(--brand)}

  /* 玻璃与卡片 */
  .glass{background:var(--glass);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:inset 0 1px 0 rgba(255,255,255,.08)}
  .card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-card);transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease)}
  .card:hover{transform:translateY(-2px);border-color:rgba(43,232,184,.35)}
  .card-media{position:relative;overflow:hidden;border-radius:var(--radius-img)}
  .card-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s var(--ease)}
  .card:hover .card-media img{transform:scale(1.03)}
  .card-media::after{content:'';position:absolute;inset:auto 0 0 0;height:52%;background:linear-gradient(180deg,transparent,rgba(6,9,18,.86))}

  /* 按钮 */
  .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:var(--radius-btn);padding:12px 20px;font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;transition:all .2s var(--ease)}
  .btn-primary{background:var(--brand);color:#04140F;box-shadow:0 0 0 1px rgba(43,232,184,.35),0 12px 30px rgba(43,232,184,.22)}
  .btn-primary:hover{background:var(--brand-hover);transform:translateY(-2px);box-shadow:0 0 0 1px rgba(43,232,184,.45),0 16px 36px rgba(43,232,184,.32)}
  .btn-primary:active{background:var(--brand-active);transform:translateY(0)}
  .btn-ghost{background:transparent;border-color:rgba(255,255,255,.18);color:var(--brand)}
  .btn-ghost:hover{background:rgba(43,232,184,.10);border-color:rgba(43,232,184,.45);transform:translateY(-2px)}
  .btn-accent{background:var(--accent);color:#170800;box-shadow:0 0 0 1px rgba(255,106,43,.35),0 12px 30px rgba(255,106,43,.22)}
  .btn-accent:hover{background:var(--accent-hover);transform:translateY(-2px);box-shadow:0 0 0 1px rgba(255,106,43,.45),0 16px 36px rgba(255,106,43,.32)}
  .btn-sm{padding:9px 16px;font-size:14px}

  .badge{display:inline-flex;align-items:center;gap:6px;padding:3px 10px;border-radius:999px;font-size:12px;font-weight:500;line-height:16px;border:1px solid;}
  .badge-violet{color:#B7A6FF;border-color:rgba(122,92,255,.45);background:rgba(122,92,255,.12)}
  .badge-brand{color:#8DF5DB;border-color:rgba(43,232,184,.4);background:rgba(43,232,184,.10)}
  .badge-accent{color:#FFB48C;border-color:rgba(255,106,43,.45);background:rgba(255,106,43,.12)}
  .badge-info{color:#9CCBFF;border-color:rgba(79,163,255,.4);background:rgba(79,163,255,.12)}

  .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;border:1px solid rgba(43,232,184,.35);background:rgba(43,232,184,.08);font-size:12px;color:#9DF3DE;letter-spacing:.04em}

  /* Hero */
  .hero-mask{position:absolute;inset:0;background:linear-gradient(180deg,rgba(6,9,18,.70) 0%,rgba(6,9,18,.88) 52%,#060912 100%)}
  .hero-grid{display:grid;gap:32px}
  @media (min-width:1024px){.hero-grid{grid-template-columns:1.15fr .85fr;align-items:center;gap:48px}}

  /* 时间线 */
  .tl-item{position:relative;padding-left:24px}
  .tl-item::before{content:'';position:absolute;left:5px;top:16px;bottom:-22px;width:1px;background:rgba(255,255,255,.12)}
  .tl-item:last-child::before{display:none}
  .tl-dot{position:absolute;left:0;top:7px;width:11px;height:11px;border-radius:999px;border:1px solid rgba(43,232,184,.55);background:#060912;transition:all .2s var(--ease)}
  .tl-item.is-active .tl-dot{background:var(--brand);border-color:var(--brand);box-shadow:0 0 0 4px rgba(43,232,184,.16),0 0 16px rgba(43,232,184,.55)}
  @media (min-width:1024px){
    .tl-item{padding-left:0;padding-top:34px}
    .tl-item::before{display:none}
    .tl-dot{left:0;top:6px}
  }

  /* 对比矩阵 */
  .compare-wrap{overflow-x:auto;padding-bottom:6px}
  .compare-grid{min-width:880px;display:grid;grid-template-columns:1.2fr 1fr 1fr 1fr;gap:0}
  .cmp-cell{padding:16px 18px;border-bottom:1px solid rgba(255,255,255,.07);font-size:14px;color:var(--text-2);display:flex;align-items:center;gap:8px}
  .cmp-head{font-weight:700;color:var(--text-1);font-size:15px;border-bottom:1px solid var(--line)}
  .cmp-feature{color:var(--text-3);font-size:13px}
  .cmp-rec{background:rgba(43,232,184,.06);border-left:1px solid rgba(43,232,184,.35);border-right:1px solid rgba(43,232,184,.35)}
  .cmp-head.cmp-rec{border-top:1px solid rgba(43,232,184,.35)}
  .cmp-ok{color:var(--brand);font-weight:600}
  .cmp-no{color:var(--text-3)}
  .compare-scroll-hint{display:none}
  @media (max-width:767px){.compare-scroll-hint{display:block;font-size:12px;color:var(--text-3);margin-bottom:8px}}

  /* FAQ */
  details.faq{border-bottom:1px solid rgba(255,255,255,.08)}
  details.faq:last-child{border-bottom:none}
  details.faq summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 4px;font-weight:600;font-size:16px}
  details.faq summary::-webkit-details-marker{display:none}
  .faq-icon{flex:none;width:24px;height:24px;border-radius:999px;border:1px solid var(--line);display:grid;place-items:center;color:var(--brand);transition:transform .2s var(--ease),border-color .2s var(--ease)}
  details.faq[open] .faq-icon{transform:rotate(45deg);border-color:rgba(43,232,184,.5)}
  .faq-body{padding:0 4px 20px;border-left:2px solid var(--brand);padding-left:16px;color:var(--text-2);font-size:15px;line-height:1.8}
  details.faq[open] .faq-body{animation:fadeUp .25s var(--ease)}
  @keyframes fadeUp{from{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:none}}

  /* 表单 */
  .field-label{display:block;font-size:13px;color:var(--text-2);margin-bottom:6px}
  .input,.select,.textarea{width:100%;background:var(--surface-2);border:1px solid var(--line);border-radius:var(--radius-btn);padding:12px 14px;font-size:15px;color:var(--text-1);transition:all .2s var(--ease)}
  .input::placeholder,.textarea::placeholder{color:var(--text-3)}
  .input:focus,.select:focus,.textarea:focus{outline:none;border-color:rgba(43,232,184,.6);box-shadow:0 0 0 4px rgba(43,232,184,.12)}
  .input.error,.select.error{border-color:#FF5A66;box-shadow:0 0 0 4px rgba(255,90,102,.12)}
  .err-msg{font-size:13px;color:#FF5A66;margin-top:6px;display:none}
  .err-msg.show{display:block}
  .stepper{display:flex;align-items:center;gap:0;background:var(--surface-2);border:1px solid var(--line);border-radius:var(--radius-btn);overflow:hidden;width:fit-content}
  .stepper button{width:44px;height:46px;background:transparent;border:none;color:var(--brand);font-size:20px;cursor:pointer;transition:background .2s var(--ease)}
  .stepper button:hover{background:rgba(43,232,184,.10)}
  .stepper span{width:56px;text-align:center;font-size:16px}
  .check{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:var(--text-2)}
  .check input{margin-top:4px;accent-color:#2BE8B8;width:16px;height:16px}

  /* 页脚 */
  .footer-col-title{font-size:13px;letter-spacing:.12em;color:var(--text-3);text-transform:uppercase;margin:0 0 14px}
  .footer-link{display:block;font-size:14px;color:var(--text-2);padding:6px 0;transition:all .2s var(--ease)}
  .footer-link:hover{color:var(--brand);transform:translateX(2px)}
  details.footer-group summary{list-style:none;cursor:pointer}
  details.footer-group summary::-webkit-details-marker{display:none}
  @media (min-width:768px){
    details.footer-group summary{pointer-events:none}
  }

  /* 吸底与返回顶部 */
  .sticky-cta{position:fixed;left:0;right:0;bottom:0;z-index:55;background:rgba(6,9,18,.92);backdrop-filter:blur(14px);border-top:1px solid var(--line);padding:10px 16px;display:flex;gap:12px;align-items:center}
  @media (min-width:768px){.sticky-cta{display:none}}
  #toTop{position:fixed;right:18px;bottom:82px;z-index:56;width:44px;height:44px;border-radius:999px;display:grid;place-items:center;background:var(--surface);border:1px solid var(--line);color:var(--brand);opacity:0;pointer-events:none;transform:translateY(8px);transition:all .25s var(--ease)}
  #toTop.show{opacity:1;pointer-events:auto;transform:none}
  @media (min-width:768px){#toTop{bottom:24px}}
  #toTop:hover{border-color:rgba(43,232,184,.5);box-shadow:0 0 0 1px rgba(43,232,184,.3),0 12px 26px rgba(43,232,184,.18)}

  .clamp2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
  .clamp3{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
  .divider{height:1px;background:var(--line);border:none;margin:0}
  .grid-dec{grid-template-columns:repeat(12,minmax(0,1fr));display:grid}

  ::-webkit-scrollbar{width:10px;height:10px}
  ::-webkit-scrollbar-track{background:#060912}
  ::-webkit-scrollbar-thumb{background:rgba(255,255,255,.12);border-radius:999px}
  ::-webkit-scrollbar-thumb:hover{background:rgba(43,232,184,.35)}

  @media (prefers-reduced-motion: reduce){
    *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
  }

/* roulang page: article */
:root{
  --brand:#2BE8B8; --brand-hover:#19C79C; --brand-active:#12A87F;
  --accent:#FF6A2B; --violet:#7A5CFF; --info:#4FA3FF;
  --ink:#060912; --ink-2:#0B1222; --ink-3:#0E1730;
  --glass:rgba(255,255,255,.06); --line:rgba(255,255,255,.10);
  --t1:#EAF0FF; --t2:#9FB0CC; --t3:#6C7C99;
  --card-r:18px; --btn-r:12px;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;background:var(--ink)}
body{
  margin:0;background:var(--ink);color:var(--t1);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;line-height:1.8;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer}
.num{font-family:"Barlow","DIN Alternate",system-ui,sans-serif;font-variant-numeric:tabular-nums}
.container{width:100%;max-width:1200px;margin-inline:auto;padding-inline:20px}
@media(min-width:768px){.container{padding-inline:32px}}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
::selection{background:rgba(43,232,184,.28)}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:50;
  background:rgba(6,9,18,.55);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:background .25s var(--ease),border-color .25s var(--ease);
}
.site-header.scrolled{background:rgba(6,9,18,.88);border-bottom-color:var(--line)}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:10px;flex:none;
  background:linear-gradient(140deg,#2BE8B8,#12A87F);
  color:#04261C;font-weight:800;font-size:17px;
  box-shadow:0 8px 20px rgba(43,232,184,.25);
}
.brand-text{font-weight:800;font-size:17px;letter-spacing:-.01em}
.navlink{
  position:relative;font-size:14.5px;color:var(--t2);padding:6px 0;
  transition:color .2s var(--ease);white-space:nowrap;
}
.navlink:hover{color:var(--t1)}
.navlink.active{color:var(--t1)}
.navlink.active::after{
  content:"";position:absolute;left:0;right:0;bottom:-6px;height:2px;
  border-radius:2px;background:var(--brand);
}
.icon-btn{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:10px;flex:none;
  border:1px solid var(--line);background:rgba(255,255,255,.04);
  color:var(--t2);transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.icon-btn:hover{color:var(--brand);border-color:rgba(43,232,184,.35);background:rgba(43,232,184,.08)}
.channel-bar{
  display:flex;align-items:center;gap:22px;height:46px;
  overflow-x:auto;scrollbar-width:none;border-top:1px solid rgba(255,255,255,.06);
}
.channel-bar::-webkit-scrollbar{display:none}
.channel-link{
  font-size:14px;color:var(--t2);white-space:nowrap;position:relative;
  padding:12px 0;transition:color .2s var(--ease);
}
.channel-link:hover{color:var(--t1)}
.channel-link.active{color:var(--brand)}
.channel-link.active::after{
  content:"";position:absolute;left:0;right:0;bottom:4px;height:2px;border-radius:2px;background:var(--brand);
}
.hot-chip{
  display:inline-flex;align-items:center;gap:6px;flex:none;
  font-size:12.5px;color:var(--t2);padding:5px 11px;border-radius:999px;
  border:1px solid var(--line);background:rgba(255,255,255,.04);
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.hot-chip:hover{color:var(--brand);border-color:rgba(43,232,184,.35)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:14.5px;font-weight:700;padding:11px 20px;border-radius:var(--btn-r);
  border:1px solid transparent;transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),color .2s var(--ease);
  white-space:nowrap;
}
.btn-brand{background:var(--brand);color:#04261C;box-shadow:0 0 0 1px rgba(43,232,184,.35),0 12px 30px rgba(43,232,184,.22)}
.btn-brand:hover{transform:translateY(-2px);box-shadow:0 0 0 1px rgba(43,232,184,.45),0 16px 36px rgba(43,232,184,.32)}
.btn-brand:active{background:var(--brand-active);transform:translateY(0)}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.18);color:var(--brand)}
.btn-ghost:hover{background:rgba(43,232,184,.10);transform:translateY(-2px)}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 0 0 1px rgba(255,106,43,.35),0 12px 30px rgba(255,106,43,.22)}
.btn-accent:hover{background:var(--accent-hover);transform:translateY(-2px)}
.btn-sm{padding:8px 14px;font-size:13.5px}

/* ---------- 玻璃卡 ---------- */
.glass-card{
  background:var(--glass);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border:1px solid var(--line);border-radius:var(--card-r);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08),0 18px 40px rgba(3,7,18,.55);
}
.solid-card{
  background:#0B1222;border:1px solid var(--line);border-radius:var(--card-r);
  box-shadow:0 18px 40px rgba(3,7,18,.55);
  transition:transform .2s var(--ease),border-color .2s var(--ease);
}
.solid-card:hover{transform:translateY(-2px);border-color:rgba(43,232,184,.35)}

/* ---------- 标签 / 徽章 ---------- */
.tag{
  display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:500;
  padding:4px 11px;border-radius:999px;letter-spacing:.02em;
  border:1px solid rgba(122,92,255,.45);color:#B8A6FF;background:rgba(122,92,255,.10);
}
.tag-brand{border-color:rgba(43,232,184,.40);color:#7DF0D2;background:rgba(43,232,184,.10)}
.tag-neutral{border-color:var(--line);color:var(--t2);background:rgba(255,255,255,.04)}
.badge-rec{
  display:inline-flex;align-items:center;font-size:11.5px;font-weight:700;
  padding:3px 9px;border-radius:999px;background:var(--accent);color:#fff;
}
.clamp-2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.clamp-3{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}

/* ---------- 阅读进度 ---------- */
#progressBar{
  position:fixed;top:0;left:0;height:3px;width:0;z-index:60;
  background:linear-gradient(90deg,#2BE8B8,#7A5CFF);
  transition:width .12s linear;
}

/* ---------- 页面主体偏移 ---------- */
.page-main{padding-top:66px}
@media(min-width:768px){.page-main{padding-top:114px}}

/* ---------- 正文排版 ---------- */
.article-body{max-width:760px;font-size:16px;line-height:1.85;color:#DCE5F7}
.article-body>*:first-child{margin-top:0}
.article-body p{margin:0 0 1.25em}
.article-body h2{
  font-size:24px;font-weight:700;line-height:1.4;color:var(--t1);
  margin:2.1em 0 .75em;padding-left:14px;border-left:3px solid var(--brand);
  scroll-margin-top:140px;
}
.article-body h3{
  font-size:19px;font-weight:600;line-height:1.5;color:var(--t1);
  margin:1.7em 0 .6em;scroll-margin-top:140px;
}
.article-body h4{font-size:16.5px;font-weight:600;color:var(--t1);margin:1.4em 0 .5em}
.article-body ul,.article-body ol{padding-left:1.35em;margin:0 0 1.25em}
.article-body li{margin:.42em 0}
.article-body ul li::marker{color:var(--brand)}
.article-body ol li::marker{color:var(--brand);font-weight:700}
.article-body a{
  color:var(--brand);text-decoration:underline;text-underline-offset:3px;
  text-decoration-thickness:1px;transition:color .2s var(--ease);
}
.article-body a:hover{color:#8CF7DC}
.article-body strong{color:#fff;font-weight:700}
.article-body blockquote{
  margin:1.5em 0;padding:14px 18px;border-radius:12px;
  background:var(--glass);border-left:3px solid var(--accent);
  color:var(--t2);backdrop-filter:blur(10px);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:14px;margin:1.4em 0}
.article-body figure{margin:1.6em 0}
.article-body figcaption{font-size:12.5px;color:var(--t3);text-align:center;margin-top:10px}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2em 0}
.article-body table{
  width:100%;border-collapse:collapse;margin:1.6em 0;font-size:14.5px;
  display:block;overflow-x:auto;-webkit-overflow-scrolling:touch;
  border:1px solid var(--line);border-radius:12px;
}
.article-body thead th{
  background:#0B1222;color:var(--t1);font-weight:700;text-align:left;
  padding:12px 14px;border-bottom:1px solid var(--line);white-space:nowrap;
}
.article-body tbody td{padding:11px 14px;border-bottom:1px solid rgba(255,255,255,.06);color:var(--t2)}
.article-body tbody tr:nth-child(even) td{background:rgba(255,255,255,.03)}
.article-body tbody tr:last-child td{border-bottom:0}
.article-body td.num,.article-body th.num{font-variant-numeric:tabular-nums}
.article-body code{
  font-family:"Barlow",ui-monospace,SFMono-Regular,Menlo,monospace;
  font-size:13.5px;padding:2px 6px;border-radius:6px;
  background:rgba(122,92,255,.14);color:#C4B6FF;border:1px solid rgba(122,92,255,.25);
}
.article-body pre{
  background:#0B1222;border:1px solid var(--line);border-radius:14px;
  padding:16px 18px;overflow-x:auto;margin:1.5em 0;
}
.article-body pre code{background:none;border:0;padding:0;color:#DCE5F7;font-size:13.5px;line-height:1.7}

/* ---------- 文章目录 ---------- */
.toc-link{
  display:block;font-size:13.5px;color:var(--t2);padding:7px 10px;border-radius:8px;
  border-left:2px solid transparent;transition:color .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease);
}
.toc-link:hover{color:var(--t1);background:rgba(255,255,255,.04)}
.toc-link.active{color:var(--brand);border-left-color:var(--brand);background:rgba(43,232,184,.08)}
.toc-link.lv3{padding-left:22px;font-size:13px}

/* ---------- 页脚 ---------- */
.footer-col-title{font-size:14px;font-weight:700;color:var(--t1);margin-bottom:14px;list-style:none;cursor:default}
.footer-col-title::-webkit-details-marker{display:none}
.footer-link{
  display:block;font-size:13.5px;color:var(--t2);padding:5px 0;
  transition:color .2s var(--ease),transform .2s var(--ease);
}
.footer-link:hover{color:var(--brand);transform:translateX(2px)}
.footer-group{border:0}
.footer-group>summary{list-style:none}
.divider{border:0;border-top:1px solid var(--line);margin:0}

/* ---------- 抽屉 ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(3,6,14,.66);z-index:70;
  opacity:0;visibility:hidden;transition:opacity .25s var(--ease),visibility .25s var(--ease);
}
.drawer-mask.open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:84%;max-width:340px;z-index:80;
  background:#0B1222;border-left:1px solid var(--line);
  transform:translateX(100%);transition:transform .28s var(--ease);
  padding:20px;overflow-y:auto;
}
.drawer.open{transform:translateX(0)}
.drawer-link{
  display:block;font-size:15px;color:var(--t1);padding:13px 12px;border-radius:12px;
  border:1px solid transparent;transition:background .2s var(--ease),border-color .2s var(--ease);
}
.drawer-link:hover,.drawer-link.active{background:rgba(43,232,184,.09);border-color:rgba(43,232,184,.28);color:var(--brand)}

/* ---------- 移动吸底 ---------- */
.mobile-cta{
  position:fixed;left:0;right:0;bottom:0;z-index:55;
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  background:rgba(6,9,18,.92);backdrop-filter:blur(14px);
  border-top:1px solid var(--line);
}
@media(max-width:767px){body{padding-bottom:78px}}

/* ---------- 返回顶部 ---------- */
#toTop{
  position:fixed;right:18px;bottom:92px;z-index:56;width:44px;height:44px;border-radius:12px;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,.06);border:1px solid var(--line);color:var(--t2);
  backdrop-filter:blur(14px);opacity:0;visibility:hidden;
  transition:opacity .25s var(--ease),visibility .25s var(--ease),color .2s var(--ease),transform .2s var(--ease);
}
#toTop.show{opacity:1;visibility:visible}
#toTop:hover{color:var(--brand);border-color:rgba(43,232,184,.35);transform:translateY(-2px)}
@media(min-width:768px){#toTop{bottom:28px}}

/* ---------- 空态 ---------- */
.empty-state{
  border:1px dashed rgba(255,255,255,.16);border-radius:var(--card-r);
  padding:48px 24px;text-align:center;background:rgba(255,255,255,.03);
}
.empty-icon{
  width:56px;height:56px;border-radius:16px;margin:0 auto 16px;
  display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line);color:var(--t3);font-size:22px;background:rgba(255,255,255,.03);
}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#060912}
::-webkit-scrollbar-thumb{background:rgba(255,255,255,.14);border-radius:8px;border:2px solid #060912}
::-webkit-scrollbar-thumb:hover{background:rgba(43,232,184,.40)}

/* roulang page: category1 */
:root{
    --brand:#2BE8B8; --brand-h:#19C79C; --brand-a:#12A87F;
    --accent:#FF6A2B; --accent-h:#E85618;
    --violet:#7A5CFF; --blue:#4FA3FF;
    --ink:#060912; --ink-2:#0B1222; --ink-3:#0E1730;
    --t1:#EAF0FF; --t2:#9FB0CC; --t3:#6C7C99;
    --line:rgba(255,255,255,.10);
    --line-strong:rgba(255,255,255,.18);
    --glass:rgba(255,255,255,.06);
    --r-card:18px; --r-btn:12px; --r-pic:14px;
    --sh-card:0 18px 40px rgba(3,7,18,.55);
    --ease:cubic-bezier(.2,.7,.3,1);
  }

  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
  body{
    margin:0;
    font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
    font-size:16px;
    line-height:1.8;
    color:var(--t1);
    background-color:var(--ink);
    background-image:radial-gradient(760px 640px at 50% -160px, rgba(43,232,184,.08), transparent 70%);
    background-repeat:no-repeat;
    -webkit-font-smoothing:antialiased;
  }
  h1,h2,h3,h4,p,figure,ul,ol,dl{margin:0}
  ul,ol{list-style:none;padding:0}
  a{color:inherit;text-decoration:none}
  img{display:block;max-width:100%}
  button,input,select,textarea{font:inherit;color:inherit;background:none;border:0}
  button{cursor:pointer}
  table{border-collapse:collapse;width:100%}
  ::selection{background:rgba(43,232,184,.28);color:#fff}
  :focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}

  .num{font-family:Barlow,"DIN Alternate",system-ui,sans-serif;font-variant-numeric:tabular-nums}

  h1{font-size:32px;line-height:40px;font-weight:800;letter-spacing:-.02em}
  h2{font-size:26px;line-height:34px;font-weight:700;letter-spacing:-.01em}
  h3{font-size:19px;line-height:28px;font-weight:600}
  p{max-width:42em}

  @media (max-width:639px){
    h1{font-size:26px;line-height:34px}
    h2{font-size:22px;line-height:30px}
    h3{font-size:17px;line-height:26px}
    body{font-size:15px;line-height:1.75}
  }

  .sec{padding:64px 0}
  @media (min-width:768px){ .sec{padding:96px 0} }

  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    font-size:12px;font-weight:500;letter-spacing:.14em;text-transform:uppercase;
    color:var(--brand);margin-bottom:12px;
  }
  .eyebrow::before{content:"";width:18px;height:1px;background:var(--brand);opacity:.7}

  .muted{color:var(--t2)}
  .dim{color:var(--t3)}
  .clamp-2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
  .clamp-3{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}

  /* 顶部导航 */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:rgba(6,9,18,.55);
    backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
    border-bottom:1px solid transparent;
    transition:background .25s var(--ease),border-color .25s var(--ease);
  }
  .site-header.is-stuck{
    background:rgba(6,9,18,.82);
    border-bottom-color:var(--line);
  }
  .brand-mark{
    width:32px;height:32px;flex:none;border-radius:10px;
    display:grid;place-items:center;
    background:linear-gradient(140deg,#2BE8B8,#12A87F);
    color:#04120D;font-weight:800;font-size:15px;
    box-shadow:0 6px 18px rgba(43,232,184,.24);
  }
  .navlink{
    position:relative;display:inline-block;
    color:var(--t2);font-size:14px;line-height:1;padding:22px 0;
    transition:color .2s var(--ease);white-space:nowrap;
  }
  .navlink::after{
    content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;
    background:var(--brand);opacity:0;transform:scaleX(.4);transform-origin:left;
    transition:opacity .2s var(--ease),transform .2s var(--ease);
  }
  .navlink:hover{color:var(--t1)}
  .navlink.active{color:var(--brand)}
  .navlink.active::after{opacity:1;transform:scaleX(1)}
  .navlink:focus-visible{outline-offset:0}

  .icon-btn{
    width:38px;height:38px;border-radius:10px;display:grid;place-items:center;
    border:1px solid var(--line);color:var(--t2);
    transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
  }
  .icon-btn:hover{color:var(--brand);border-color:rgba(43,232,184,.35);background:rgba(43,232,184,.08)}

  .hot-chip{
    display:inline-flex;align-items:center;gap:6px;height:30px;padding:0 12px;
    border-radius:999px;border:1px solid var(--line);background:rgba(255,255,255,.03);
    font-size:12.5px;color:var(--t2);white-space:nowrap;
    transition:color .2s var(--ease),border-color .2s var(--ease);
  }
  .hot-chip:hover{color:var(--brand);border-color:rgba(43,232,184,.35)}
  .scroll-x{overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none}
  .scroll-x::-webkit-scrollbar{display:none}

  /* 抽屉 */
  .drawer{
    position:fixed;inset:0 0 0 auto;width:82%;max-width:360px;z-index:80;
    background:rgba(11,18,34,.96);backdrop-filter:blur(14px);
    border-left:1px solid var(--line);
    transform:translateX(100%);transition:transform .28s var(--ease);
    padding:20px;overflow-y:auto;
  }
  .drawer.is-open{transform:translateX(0)}
  .drawer-mask{
    position:fixed;inset:0;z-index:70;background:rgba(3,7,18,.6);
    opacity:0;pointer-events:none;transition:opacity .28s var(--ease);
  }
  .drawer-mask.is-open{opacity:1;pointer-events:auto}
  .drawer-link{
    display:block;padding:12px 12px;border-radius:12px;color:var(--t2);font-size:15px;
    transition:background .2s var(--ease),color .2s var(--ease);
  }
  .drawer-link:hover,.drawer-link.active{background:rgba(43,232,184,.10);color:var(--brand)}

  /* 按钮 */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:46px;padding:0 22px;border-radius:var(--r-btn);
    font-size:15px;font-weight:600;white-space:nowrap;
    border:1px solid transparent;
    transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
  }
  .btn-sm{height:38px;padding:0 16px;font-size:13.5px;border-radius:10px}
  .btn-primary{background:var(--brand);color:#04120D;box-shadow:var(--sh-glow)}
  .btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 0 1px rgba(43,232,184,.35),0 14px 36px rgba(43,232,184,.30)}
  .btn-primary:active{background:var(--brand-a);transform:translateY(0)}
  .btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--brand)}
  .btn-ghost:hover{background:rgba(43,232,184,.10);transform:translateY(-2px);border-color:rgba(43,232,184,.40)}
  .btn-accent{background:var(--accent);color:#1A0A02;box-shadow:var(--sh-glowAccent)}
  .btn-accent:hover{background:var(--accent-h);transform:translateY(-2px)}
  .link-more{
    display:inline-flex;align-items:center;gap:8px;color:var(--brand);font-size:14px;font-weight:500;
    transition:gap .2s var(--ease),color .2s var(--ease);
  }
  .link-more:hover{gap:12px;color:#63F2CE}
  .inline-link{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
  .inline-link:hover{color:#63F2CE}

  /* 玻璃与卡片 */
  .glass{
    background:var(--glass);
    backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
    border:1px solid var(--line);border-radius:var(--r-card);
    box-shadow:inset 0 1px 0 rgba(255,255,255,.08);
  }
  .card{
    position:relative;overflow:hidden;
    background:var(--ink-2);border:1px solid var(--line);border-radius:var(--r-card);
    box-shadow:var(--sh-card);
    transition:border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
  }
  .card:hover{border-color:rgba(43,232,184,.35);transform:translateY(-2px);box-shadow:0 22px 48px rgba(3,7,18,.62)}
  .card-pic{position:relative;overflow:hidden;border-radius:var(--r-pic);background:var(--ink-3)}
  .card-pic img{width:100%;height:100%;object-fit:cover;transition:transform .35s var(--ease)}
  .card:hover .card-pic img{transform:scale(1.03)}
  .pic-fallback{
    position:absolute;inset:0;display:grid;place-items:center;
    background:linear-gradient(140deg,#0E1730,#0B1222);
    color:rgba(43,232,184,.5);font-size:26px;font-weight:800;
  }

  .badge{
    display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 10px;
    border-radius:999px;font-size:12px;font-weight:500;letter-spacing:.02em;
    border:1px solid var(--line);color:var(--t2);white-space:nowrap;
  }
  .badge-brand{color:var(--brand);border-color:rgba(43,232,184,.45);background:rgba(43,232,184,.10)}
  .badge-violet{color:#BCACFF;border-color:rgba(122,92,255,.45);background:rgba(122,92,255,.12)}
  .badge-accent{color:#FFB08A;border-color:rgba(255,106,43,.45);background:rgba(255,106,43,.12)}

  .chip{
    display:inline-flex;align-items:center;gap:6px;height:34px;padding:0 15px;
    border-radius:999px;border:1px solid var(--line);color:var(--t2);font-size:13.5px;
    white-space:nowrap;transition:all .2s var(--ease);
  }
  .chip:hover{color:var(--t1);border-color:rgba(43,232,184,.35);background:rgba(255,255,255,.04)}
  .chip.is-active{color:var(--brand);border-color:rgba(43,232,184,.5);background:rgba(43,232,184,.12)}

  /* 数据块 */
  .stat{padding:20px 22px;border-radius:var(--r-card);border:1px solid var(--line);background:rgba(255,255,255,.03)}
  .stat-num{font-size:30px;line-height:1;font-weight:700;color:var(--t1)}
  .stat-label{font-size:12.5px;color:var(--t3);margin-top:10px;letter-spacing:.03em}

  /* 时间线 */
  .steps{position:relative}
  .step{
    position:relative;padding:22px;border-radius:var(--r-card);
    border:1px solid var(--line);background:rgba(255,255,255,.03);
    transition:border-color .2s var(--ease),transform .2s var(--ease);
  }
  .step:hover{border-color:rgba(43,232,184,.35);transform:translateY(-2px)}
  .step-dot{
    display:grid;place-items:center;width:38px;height:38px;border-radius:999px;
    border:1px solid rgba(43,232,184,.45);color:var(--brand);
    font-size:13px;font-weight:700;margin-bottom:14px;
    background:rgba(43,232,184,.08);
  }
  .step.is-active .step-dot{background:var(--brand);color:#04120D;border-color:var(--brand);box-shadow:0 0 0 6px rgba(43,232,184,.12)}

  /* FAQ */
  .faq-item{border-bottom:1px solid var(--line)}
  .faq-item:last-child{border-bottom:0}
  .faq-item summary{
    list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:18px 0;font-size:16px;font-weight:600;color:var(--t1);
  }
  .faq-item summary::-webkit-details-marker{display:none}
  .faq-item summary:hover{color:var(--brand)}
  .faq-icon{
    flex:none;width:26px;height:26px;border-radius:999px;display:grid;place-items:center;
    border:1px solid var(--line);color:var(--brand);font-size:13px;
    transition:transform .25s var(--ease),border-color .2s var(--ease);
  }
  .faq-item[open] .faq-icon{transform:rotate(45deg);border-color:rgba(43,232,184,.5)}
  .faq-body{
    padding:0 0 18px 16px;border-left:2px solid var(--brand);
    color:var(--t2);font-size:15px;line-height:1.8;
  }

  /* 页脚 */
  .footer-col-title{font-size:14px;font-weight:700;color:var(--t1);margin-bottom:12px}
  .footer-group summary{list-style:none;cursor:pointer}
  .footer-group summary::-webkit-details-marker{display:none}
  .footer-link{
    display:block;color:var(--t2);font-size:13.5px;padding:6px 0;
    transition:color .2s var(--ease),transform .2s var(--ease);
  }
  .footer-link:hover{color:var(--brand);transform:translateX(2px)}
  .divider{border:0;border-top:1px solid var(--line);margin:0}

  /* 吸底 CTA */
  .sticky-cta{
    position:fixed;left:0;right:0;bottom:0;z-index:65;
    padding:10px 16px calc(10px + env(safe-area-inset-bottom));
    background:rgba(6,9,18,.92);backdrop-filter:blur(14px);
    border-top:1px solid var(--line);
  }

  .to-top{
    position:fixed;right:18px;bottom:86px;z-index:64;
    width:44px;height:44px;border-radius:999px;
    display:grid;place-items:center;
    background:rgba(11,18,34,.9);border:1px solid var(--line);color:var(--brand);
    opacity:0;pointer-events:none;transform:translateY(8px);
    transition:opacity .25s var(--ease),transform .25s var(--ease),border-color .2s var(--ease);
  }
  .to-top.is-show{opacity:1;pointer-events:auto;transform:translateY(0)}
  .to-top:hover{border-color:rgba(43,232,184,.45)}
  @media (min-width:768px){ .to-top{bottom:28px} }

  .reveal{opacity:0;transform:translateY(12px);animation:reveal .6s var(--ease) forwards}
  @keyframes reveal{to{opacity:1;transform:translateY(0)}}
  .d1{animation-delay:.06s}.d2{animation-delay:.12s}.d3{animation-delay:.18s}
  .d4{animation-delay:.24s}.d5{animation-delay:.30s}.d6{animation-delay:.36s}

  @media (prefers-reduced-motion:reduce){
    *{animation:none !important;transition:none !important;scroll-behavior:auto !important}
    .reveal{opacity:1;transform:none}
  }

/* roulang page: category2 */
:root{
    --brand:#2BE8B8; --brand-hover:#19C79C; --brand-active:#12A87F;
    --accent:#FF6A2B; --accent-hover:#E85618;
    --violet:#7A5CFF; --info:#4FA3FF;
    --bg:#060912; --bg-2:#0B1222; --panel:#0E1730;
    --t1:#EAF0FF; --t2:#9FB0CC; --t3:#6C7C99;
    --line:rgba(255,255,255,.10); --line-strong:rgba(255,255,255,.18);
    --glass:rgba(255,255,255,.06);
    --r-card:18px; --r-btn:12px; --r-img:14px;
    --shadow-card:0 18px 40px rgba(3,7,18,.55);
    --ease:cubic-bezier(.2,.7,.3,1);
  }
  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:110px}
  body{
    margin:0;background:var(--bg);color:var(--t1);
    font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
    font-size:16px;line-height:1.8;-webkit-font-smoothing:antialiased;
  }
  body::before{
    content:'';position:fixed;inset:0 0 auto 0;height:640px;pointer-events:none;z-index:0;
    background:radial-gradient(720px 380px at 18% -6%, rgba(43,232,184,.08), transparent 70%),
               radial-gradient(640px 340px at 88% 0%, rgba(122,92,255,.07), transparent 72%);
  }
  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(--brand);outline-offset:2px;border-radius:6px}
  ::selection{background:rgba(43,232,184,.28)}
  ::-webkit-scrollbar{width:10px;height:10px}
  ::-webkit-scrollbar-thumb{background:rgba(255,255,255,.14);border-radius:999px}
  ::-webkit-scrollbar-track{background:transparent}

  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;position:relative;z-index:1}
  @media (min-width:768px){ .container{padding:0 32px} }
  .num{font-family:"Barlow","DIN Alternate",system-ui,sans-serif;font-variant-numeric:tabular-nums}

  /* ---------- 头部与导航 ---------- */
  .site-header{
    position:sticky;top:0;z-index:80;
    background:rgba(6,9,18,.62);
    backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
    border-bottom:1px solid var(--line);
    transition:background .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
  }
  .site-header.scrolled{background:rgba(6,9,18,.90);box-shadow:0 10px 30px rgba(3,7,18,.55)}
  .brand-mark{
    width:32px;height:32px;border-radius:9px;display:grid;place-items:center;flex:none;
    background:var(--brand);color:#04140F;font-weight:800;font-size:15px;line-height:1;
    box-shadow:0 6px 18px rgba(43,232,184,.28);
  }
  .navlink{position:relative;font-size:14.5px;color:var(--t2);padding:6px 0;white-space:nowrap;transition:color .2s var(--ease)}
  .navlink:hover{color:var(--t1)}
  .navlink.active{color:var(--brand)}
  .navlink.active::after{content:'';position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--brand);border-radius:2px}
  .icon-btn{
    width:38px;height:38px;border-radius:11px;display:grid;place-items:center;flex:none;
    border:1px solid var(--line);background:rgba(255,255,255,.04);color:var(--t2);
    cursor:pointer;transition:all .2s var(--ease);
  }
  .icon-btn:hover{color:var(--brand);border-color:rgba(43,232,184,.35);background:rgba(43,232,184,.08)}
  .channel-bar{display:flex;align-items:center;gap:14px;border-top:1px solid var(--line);padding:8px 0 10px}
  .chips-scroll{display:flex;gap:8px;overflow-x:auto;scrollbar-width:none;flex:1}
  .chips-scroll::-webkit-scrollbar{display:none}

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:42px;padding:0 20px;border-radius:var(--r-btn);
    font-size:14.5px;font-weight:600;border:1px solid transparent;cursor:pointer;
    white-space:nowrap;transition:all .2s var(--ease);
  }
  .btn-primary{background:var(--brand);color:#04140F;box-shadow:0 0 0 1px rgba(43,232,184,.35),0 12px 30px rgba(43,232,184,.22)}
  .btn-primary:hover{background:var(--brand-hover);transform:translateY(-2px);box-shadow:0 0 0 1px rgba(43,232,184,.45),0 0 36px rgba(43,232,184,.30)}
  .btn-primary:active{background:var(--brand-active);transform:translateY(0)}
  .btn-ghost{border-color:var(--line-strong);color:var(--brand);background:transparent}
  .btn-ghost:hover{background:rgba(43,232,184,.10);border-color:rgba(43,232,184,.45);transform:translateY(-2px)}
  .btn-accent{background:var(--accent);color:#1A0A02;box-shadow:0 0 0 1px rgba(255,106,43,.40),0 12px 30px rgba(255,106,43,.22)}
  .btn-accent:hover{background:var(--accent-hover);transform:translateY(-2px);box-shadow:0 0 0 1px rgba(255,106,43,.5),0 0 36px rgba(255,106,43,.30)}
  .btn-sm{height:36px;padding:0 16px;font-size:13.5px}

  /* ---------- 玻璃与卡片 ---------- */
  .glass{
    background:var(--glass);
    backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
    border:1px solid var(--line);border-radius:var(--r-card);
    box-shadow:inset 0 1px 0 rgba(255,255,255,.08);
  }
  .card{
    background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-card);
    box-shadow:var(--shadow-card);transition:all .2s var(--ease);
  }
  .card:hover{border-color:rgba(43,232,184,.35);transform:translateY(-2px)}
  .thumb{border-radius:var(--r-img);overflow:hidden;background:#0E1730}
  .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease)}
  .thumb:hover img{transform:scale(1.03)}

  /* ---------- 徽章 / 标签 ---------- */
  .badge{display:inline-flex;align-items:center;height:22px;padding:0 9px;border-radius:999px;font-size:11.5px;letter-spacing:.04em;border:1px solid var(--line-strong);color:var(--t2)}
  .badge-brand{border-color:rgba(43,232,184,.45);color:var(--brand);background:rgba(43,232,184,.08)}
  .badge-violet{border-color:rgba(122,92,255,.45);color:#B3A2FF;background:rgba(122,92,255,.10)}
  .badge-accent{border-color:rgba(255,106,43,.45);color:#FF9163;background:rgba(255,106,43,.10)}
  .chip{
    display:inline-flex;align-items:center;gap:6px;height:30px;padding:0 12px;border-radius:999px;
    border:1px solid var(--line);background:rgba(255,255,255,.03);
    font-size:12.5px;color:var(--t2);white-space:nowrap;transition:all .2s var(--ease);
  }
  .chip:hover{color:var(--brand);border-color:rgba(43,232,184,.35)}
  .chip.active{color:var(--brand);border-color:rgba(43,232,184,.45);background:rgba(43,232,184,.10)}

  /* ---------- 页首横幅 ---------- */
  .page-hero{
    position:relative;overflow:hidden;border-bottom:1px solid var(--line);
    background-image:linear-gradient(180deg, rgba(6,9,18,.72) 0%, rgba(6,9,18,.90) 60%, var(--bg) 100%),
                     url('/assets/images/backpic/back-2.webp');
    background-size:cover;background-position:center;
  }
  .page-hero::after{
    content:'';position:absolute;inset:auto -10% -60% -10%;height:320px;pointer-events:none;
    background:radial-gradient(560px 260px at 22% 40%, rgba(43,232,184,.14), transparent 70%);
  }
  .crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--t3);flex-wrap:wrap}
  .crumb a{color:var(--t3);transition:color .2s var(--ease)}
  .crumb a:hover{color:var(--brand)}
  .crumb-current{color:var(--t3)}
  .crumb span.sep{color:rgba(255,255,255,.22)}

  /* ---------- 锚点目录 ---------- */
  .toc-link{
    display:block;padding:10px 14px;font-size:14.5px;color:var(--t2);
    border-left:2px solid transparent;border-radius:0 10px 10px 0;
    transition:all .2s var(--ease);
  }
  .toc-link:hover{color:var(--t1);background:rgba(255,255,255,.04)}
  .toc-link.active{color:var(--brand);border-left-color:var(--brand);background:rgba(43,232,184,.08)}

  /* ---------- 步骤时间线 ---------- */
  .steps{position:relative;padding-left:30px}
  .steps::before{content:'';position:absolute;left:7px;top:8px;bottom:8px;width:1px;background:var(--line)}
  .step{position:relative;padding-bottom:26px}
  .step:last-child{padding-bottom:0}
  .step-dot{
    position:absolute;left:-30px;top:5px;width:15px;height:15px;border-radius:999px;
    border:2px solid var(--brand);background:var(--bg);
  }
  .step.on .step-dot{background:var(--brand);box-shadow:0 0 0 4px rgba(43,232,184,.18)}

  /* ---------- 表格 ---------- */
  .table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r-card);background:rgba(11,18,34,.6)}
  .data-table{width:100%;min-width:620px;border-collapse:collapse;font-size:14.5px}
  .data-table th{
    background:#0B1222;color:var(--t2);font-weight:600;text-align:left;
    padding:12px 16px;font-size:12.5px;letter-spacing:.06em;border-bottom:1px solid var(--line);
  }
  .data-table td{padding:13px 16px;border-bottom:1px solid var(--line);color:var(--t2);vertical-align:top}
  .data-table tbody tr:last-child td{border-bottom:none}
  .data-table tbody tr:nth-child(even){background:rgba(255,255,255,.022)}
  .data-table td:first-child{color:var(--t1);font-weight:500}

  /* ---------- 提示框 ---------- */
  .note{
    border-radius:var(--r-card);padding:16px 18px;font-size:14.5px;color:var(--t2);
    background:rgba(43,232,184,.06);border:1px solid rgba(43,232,184,.24);
  }
  .note-accent{background:rgba(255,106,43,.07);border-color:rgba(255,106,43,.28)}
  .note strong{color:var(--t1)}

  /* ---------- FAQ ---------- */
  .faq-item{border-bottom:1px solid var(--line)}
  .faq-item:last-child{border-bottom:none}
  .faq-q{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 20px;cursor:pointer;list-style:none}
  .faq-q::-webkit-details-marker{display:none}
  .faq-q h3{margin:0;font-size:16px;font-weight:600;color:var(--t1);line-height:1.6}
  .faq-icon{position:relative;width:16px;height:16px;flex:none;transition:transform .25s var(--ease)}
  .faq-icon::before,.faq-icon::after{content:'';position:absolute;background:var(--brand);border-radius:2px}
  .faq-icon::before{left:7px;top:0;width:2px;height:16px}
  .faq-icon::after{top:7px;left:0;width:16px;height:2px}
  details[open] .faq-icon{transform:rotate(45deg)}
  .faq-a{padding:0 20px 20px 16px;margin-left:20px;border-left:2px solid var(--brand);color:var(--t2);font-size:14.5px}
  .faq-a p + p{margin-top:.5em}

  /* ---------- 列表条目 ---------- */
  .info-row{display:flex;gap:12px;padding:14px 0;border-bottom:1px dashed rgba(255,255,255,.09)}
  .info-row:last-child{border-bottom:none}
  .info-dot{width:7px;height:7px;border-radius:999px;background:var(--brand);flex:none;margin-top:12px}

  /* ---------- 页脚 ---------- */
  .footer-col-title{font-size:14px;font-weight:700;color:var(--t1);letter-spacing:.02em}
  .footer-link{display:block;font-size:13.5px;color:var(--t2);padding:6px 0;transition:all .2s var(--ease)}
  .footer-link:hover{color:var(--brand);transform:translateX(2px)}
  .divider{border:none;height:1px;background:var(--line);margin:0}
  .footer-group summary{list-style:none;cursor:default}
  .footer-group summary::-webkit-details-marker{display:none}
  @media (max-width:767px){ .footer-group summary{cursor:pointer} }

  /* ---------- 抽屉 ---------- */
  .drawer{
    position:fixed;top:0;right:0;bottom:0;width:min(88vw,340px);z-index:120;
    background:rgba(8,12,24,.96);backdrop-filter:blur(16px);
    border-left:1px solid var(--line);padding:20px;
    transform:translateX(102%);transition:transform .28s var(--ease);
    overflow-y:auto;
  }
  .drawer.open{transform:translateX(0)}
  .drawer-mask{position:fixed;inset:0;background:rgba(3,6,14,.62);z-index:110;opacity:0;visibility:hidden;transition:opacity .25s var(--ease)}
  .drawer-mask.open{opacity:1;visibility:visible}
  .drawer-link{display:block;padding:13px 12px;border-radius:12px;font-size:15px;color:var(--t2);transition:all .2s var(--ease)}
  .drawer-link:hover{background:rgba(255,255,255,.05);color:var(--t1)}
  .drawer-link.active{color:var(--brand);background:rgba(43,232,184,.10)}

  /* ---------- 吸底条 / 回顶 ---------- */
  .sticky-cta{
    position:fixed;left:0;right:0;bottom:0;z-index:90;
    background:rgba(6,9,18,.92);backdrop-filter:blur(14px);
    border-top:1px solid var(--line);padding:10px 16px calc(10px + env(safe-area-inset-bottom));
    display:flex;align-items:center;gap:10px;
  }
  #toTop{
    position:fixed;right:18px;bottom:84px;z-index:95;width:44px;height:44px;border-radius:999px;
    display:grid;place-items:center;border:1px solid var(--line);
    background:rgba(11,18,34,.9);color:var(--brand);cursor:pointer;
    opacity:0;visibility:hidden;transform:translateY(8px);transition:all .25s var(--ease);
  }
  #toTop.show{opacity:1;visibility:visible;transform:translateY(0)}
  #toTop:hover{border-color:rgba(43,232,184,.45);box-shadow:0 0 24px rgba(43,232,184,.22)}

  /* ---------- 表单 ---------- */
  .field-input{
    width:100%;height:46px;border-radius:var(--r-btn);padding:0 14px;
    background:#0E1730;border:1px solid var(--line);color:var(--t1);
    transition:all .2s var(--ease);
  }
  .field-input::placeholder{color:var(--t3)}
  .field-input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(43,232,184,.12)}
  textarea.field-input{height:auto;padding:12px 14px;resize:vertical;line-height:1.7}
  .field-label{display:block;font-size:13px;color:var(--t2);margin-bottom:7px;letter-spacing:.02em}

  .link-inline{color:var(--brand);text-decoration:underline;text-underline-offset:3px;transition:color .2s var(--ease)}
  .link-inline:hover{color:var(--brand-hover)}

  .reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
  .reveal.in{opacity:1;transform:translateY(0)}

  @media (max-width:767px){
    body::before{display:none}
    .glass{backdrop-filter:none;background:rgba(255,255,255,.05)}
    .site-header{backdrop-filter:none;background:rgba(6,9,18,.94)}
  }
  @media (prefers-reduced-motion: reduce){
    *,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}
    .reveal{opacity:1;transform:none}
  }

/* roulang page: category3 */
:root{
    --ink:#060912;
    --ink-2:#0B1222;
    --ink-3:#0E1730;
    --brand:#2BE8B8;
    --brand-hover:#19C79C;
    --brand-active:#12A87F;
    --accent:#FF6A2B;
    --accent-hover:#E85618;
    --violet:#7A5CFF;
    --blue:#4FA3FF;
    --t1:#EAF0FF;
    --t2:#9FB0CC;
    --t3:#6C7C99;
    --line:rgba(255,255,255,.10);
    --glass:rgba(255,255,255,.06);
    --card-r:18px;
    --btn-r:12px;
    --ease:cubic-bezier(.2,.7,.3,1);
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--ink);
    color:var(--t1);
    font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
    font-size:16px;
    line-height:1.8;
    overflow-x:hidden;
    -webkit-font-smoothing:antialiased;
  }
  @media (max-width:767px){ body{padding-bottom:74px;} }
  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;cursor:pointer;}
  :focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
  ::selection{background:rgba(43,232,184,.28);}
  ::-webkit-scrollbar{width:10px;height:10px;}
  ::-webkit-scrollbar-track{background:#050810;}
  ::-webkit-scrollbar-thumb{background:rgba(255,255,255,.14);border-radius:999px;}
  ::-webkit-scrollbar-thumb:hover{background:rgba(43,232,184,.45);}
  .sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}

  h1{font-size:32px;line-height:40px;font-weight:800;letter-spacing:-.02em;margin:0;}
  h2{font-size:26px;line-height:34px;font-weight:700;letter-spacing:-.01em;margin:0;}
  h3{font-size:19px;line-height:28px;font-weight:600;margin:0;}
  p{margin:0 0 1.2em;}
  .h1-brand{color:var(--brand);}
  .h1-sep{display:inline-block;margin:0 8px;color:var(--t3);font-weight:600;}
  @media (max-width:639px){
    h1{font-size:26px;line-height:34px;}
    h2{font-size:22px;line-height:30px;}
    h3{font-size:17px;line-height:26px;}
    body{font-size:15px;line-height:1.75;}
  }
  .num{font-family:"Barlow","DIN Alternate",system-ui,sans-serif;font-variant-numeric:tabular-nums;}
  .lead{color:var(--t2);max-width:42em;}

  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;position:relative;z-index:1;}
  @media (min-width:768px){ .container{padding:0 32px;} }

  .page-glow{
    position:absolute;top:0;left:0;right:0;height:640px;pointer-events:none;z-index:0;
    background:
      radial-gradient(620px 320px at 20% 6%, rgba(43,232,184,.10), transparent 72%),
      radial-gradient(560px 300px at 84% 0%, rgba(122,92,255,.09), transparent 72%);
  }

  /* ---------- header ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:transparent;
    transition:background .25s var(--ease),box-shadow .25s var(--ease),backdrop-filter .25s var(--ease);
  }
  .site-header.is-scrolled{
    background:rgba(6,9,18,.82);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
    box-shadow:0 1px 0 var(--line);
  }
  .brand-mark{
    width:36px;height:36px;flex:0 0 36px;border-radius:10px;display:grid;place-items:center;
    font-size:16px;font-weight:800;color:#04140F;
    background:linear-gradient(140deg,var(--brand),#12A87F);
    box-shadow:0 0 0 1px rgba(43,232,184,.35),0 8px 20px rgba(43,232,184,.18);
  }
  .icon-btn{
    width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
    border:1px solid var(--line);color:var(--t2);background:rgba(255,255,255,.04);
    transition:all .2s var(--ease);
  }
  .icon-btn:hover{color:var(--brand);border-color:rgba(43,232,184,.35);background:rgba(43,232,184,.08);}
  .navlink{
    position:relative;font-size:14px;color:var(--t2);padding:8px 2px;
    transition:color .2s var(--ease);white-space:nowrap;
  }
  .navlink:hover{color:var(--t1);}
  .navlink.active{color:var(--brand);font-weight:600;}
  .navlink.active::after{
    content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;
    background:var(--brand);box-shadow:0 0 12px rgba(43,232,184,.6);
  }
  .channel-bar{
    display:flex;align-items:center;gap:20px;
    padding:2px 0 8px;border-top:1px solid rgba(255,255,255,.06);
  }
  .hot-chips{display:flex;gap:8px;overflow-x:auto;white-space:nowrap;scrollbar-width:none;padding-bottom:2px;}
  .hot-chips::-webkit-scrollbar{display:none;}
  .chip{
    font-size:12px;line-height:16px;padding:5px 11px;border-radius:999px;
    border:1px solid var(--line);color:var(--t2);transition:all .2s var(--ease);white-space:nowrap;
  }
  .chip:hover{color:var(--brand);border-color:rgba(43,232,184,.35);background:rgba(43,232,184,.06);}
  .search-panel{background:rgba(6,9,18,.92);backdrop-filter:blur(14px);border-bottom:1px solid var(--line);}

  /* ---------- drawer ---------- */
  .drawer{
    position:fixed;top:0;right:0;bottom:0;width:84%;max-width:340px;z-index:80;
    background:rgba(6,9,18,.98);backdrop-filter:blur(14px);
    border-left:1px solid var(--line);padding:20px;overflow-y:auto;
    transform:translateX(103%);transition:transform .3s var(--ease);
  }
  .drawer.open{transform:translateX(0);}
  .drawer-mask{
    position:fixed;inset:0;z-index:70;background:rgba(3,6,14,.62);
    opacity:0;pointer-events:none;transition:opacity .3s var(--ease);
  }
  .drawer-mask.open{opacity:1;pointer-events:auto;}
  .drawer-link{
    display:block;padding:12px 14px;border-radius:12px;font-size:15px;color:var(--t2);
    border:1px solid transparent;transition:all .2s var(--ease);
  }
  .drawer-link:hover{color:var(--t1);background:rgba(255,255,255,.05);border-color:var(--line);}
  .drawer-link.active{color:var(--brand);background:rgba(43,232,184,.08);border-color:rgba(43,232,184,.28);font-weight:600;}

  /* ---------- 通用组件 ---------- */
  .glass{
    background:var(--glass);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
    border:1px solid var(--line);border-radius:var(--card-r);
    box-shadow:inset 0 1px 0 rgba(255,255,255,.08);
  }
  .card{
    background:var(--ink-2);border:1px solid var(--line);border-radius:var(--card-r);
    box-shadow:0 18px 40px rgba(3,7,18,.55);
    transition:transform .2s var(--ease),border-color .2s var(--ease);
  }
  .card:hover{transform:translateY(-2px);border-color:rgba(43,232,184,.35);}
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:44px;padding:0 20px;border-radius:var(--btn-r);
    font-size:14px;font-weight:600;border:1px solid transparent;cursor:pointer;
    transition:all .2s var(--ease);white-space:nowrap;
  }
  .btn-primary{
    background:var(--brand);color:#04140F;
    box-shadow:0 0 0 1px rgba(43,232,184,.35),0 12px 30px rgba(43,232,184,.22);
  }
  .btn-primary:hover{background:var(--brand-hover);transform:translateY(-2px);box-shadow:0 0 0 1px rgba(43,232,184,.45),0 16px 36px rgba(43,232,184,.28);}
  .btn-primary:active{background:var(--brand-active);transform:translateY(0);box-shadow:0 0 0 1px rgba(43,232,184,.35),0 8px 20px rgba(43,232,184,.18);}
  .btn-ghost{background:transparent;border-color:rgba(255,255,255,.18);color:var(--brand);}
  .btn-ghost:hover{background:rgba(43,232,184,.10);transform:translateY(-2px);border-color:rgba(43,232,184,.4);}
  .btn-accent{
    background:var(--accent);color:#1F0A01;
    box-shadow:0 0 0 1px rgba(255,106,43,.40),0 12px 30px rgba(255,106,43,.24);
  }
  .btn-accent:hover{background:var(--accent-hover);transform:translateY(-2px);}
  .badge{
    display:inline-flex;align-items:center;gap:6px;font-size:12px;line-height:16px;font-weight:500;
    padding:4px 10px;border-radius:999px;border:1px solid var(--line);color:var(--t2);white-space:nowrap;
  }
  .badge-brand{border-color:rgba(43,232,184,.38);color:var(--brand);background:rgba(43,232,184,.08);}
  .badge-violet{border-color:rgba(122,92,255,.42);color:#AFA2FF;background:rgba(122,92,255,.10);}
  .badge-accent{border-color:rgba(255,106,43,.42);color:#FF9B6C;background:rgba(255,106,43,.10);}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.12em;
    color:var(--brand);border:1px solid rgba(43,232,184,.3);background:rgba(43,232,184,.08);
    padding:5px 12px;border-radius:999px;font-weight:500;
  }
  .section{padding:64px 0;position:relative;}
  @media (min-width:768px){ .section{padding:96px 0;} }
  .section-tight{padding:8px 0 0;position:relative;}
  .section-head{
    display:flex;align-items:flex-end;justify-content:space-between;
    gap:20px;flex-wrap:wrap;margin-bottom:32px;
  }
  .sec-index{
    display:inline-block;font-size:12px;letter-spacing:.14em;color:var(--t3);
    font-weight:600;margin-bottom:10px;
  }
  .sec-desc{color:var(--t2);font-size:15px;max-width:42em;margin-top:10px;margin-bottom:0;}
  .divider{border:0;border-top:1px solid var(--line);margin:0;}

  /* ---------- hero ---------- */
  .hero{position:relative;overflow:hidden;padding:48px 0 56px;}
  @media (min-width:768px){ .hero{padding:72px 0 84px;} }
  .hero-bg{
    position:absolute;inset:0;z-index:0;opacity:.92;
    background-image:
      linear-gradient(180deg, rgba(6,9,18,.74) 0%, rgba(6,9,18,.88) 58%, #060912 100%),
      url('/assets/images/backpic/back-1.webp');
    background-size:cover;background-position:center;
  }
  .hero-inner{position:relative;z-index:1;display:grid;gap:34px;}
  @media (min-width:1024px){
    .hero-inner{grid-template-columns:1.3fr .85fr;align-items:center;gap:48px;}
  }
  .hero-sub{font-size:17px;color:var(--t1);font-weight:600;letter-spacing:.01em;}
  .hero-actions{display:flex;flex-wrap:wrap;gap:12px;}
  .hero-note{display:flex;flex-wrap:wrap;gap:8px 20px;font-size:13.5px;color:var(--t3);}
  .hero-note span{display:inline-flex;align-items:center;gap:6px;}
  .hero-card{overflow:hidden;}
  .hero-card img{width:100%;height:180px;object-fit:cover;border-radius:17px 17px 0 0;}
  .hero-list{list-style:none;margin:0;padding:0;display:grid;gap:10px;}
  .hero-list li{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--t2);}
  .hero-list .dot{width:7px;height:7px;border-radius:999px;background:var(--brand);box-shadow:0 0 8px rgba(43,232,184,.7);flex:0 0 7px;}
  .hero-card-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;border-top:1px solid var(--line);padding-top:14px;}

  /* ---------- stats bar ---------- */
  .stats-bar{display:grid;grid-template-columns:repeat(3,1fr);gap:2px;overflow:hidden;padding:0;}
  .stat{padding:20px 18px;border-right:1px solid var(--line);}
  .stat:last-child{border-right:0;}
  .stat-num{font-size:28px;line-height:34px;font-weight:800;color:var(--brand);letter-spacing:-.02em;}
  .stat-label{font-size:13px;color:var(--t2);margin-top:4px;}
  @media (max-width:639px){
    .stats-bar{grid-template-columns:1fr;}
    .stat{border-right:0;border-bottom:1px solid var(--line);display:flex;align-items:baseline;gap:12px;}
    .stat:last-child{border-bottom:0;}
    .stat-label{margin-top:0;}
  }

  /* ---------- matrix ---------- */
  .matrix-hint{font-size:13px;color:var(--t3);margin-bottom:10px;}
  @media (min-width:768px){ .matrix-hint{display:none;} }
  .matrix-scroll{overflow-x:auto;padding-bottom:10px;scrollbar-width:thin;}
  .matrix{
    display:grid;
    grid-template-columns:176px repeat(3,minmax(178px,1fr));
    min-width:750px;
    border:1px solid var(--line);border-radius:var(--card-r);overflow:hidden;
    background:rgba(11,18,34,.72);
  }
  .mx-head{
    display:flex;flex-direction:column;gap:6px;align-items:flex-start;
    padding:18px;font-size:15px;font-weight:700;color:var(--t1);
    border-bottom:1px solid var(--line);border-right:1px solid var(--line);
    background:rgba(255,255,255,.035);
  }
  .mx-head:nth-child(4){border-right:0;}
  .mx-sub{font-size:12.5px;font-weight:500;color:var(--t3);letter-spacing:.04em;}
  .mx-cell{
    display:flex;align-items:center;gap:8px;
    padding:15px 18px;font-size:14px;color:var(--t2);
    border-bottom:1px solid var(--line);border-right:1px solid var(--line);
    min-height:56px;
  }
  .mx-cell:nth-child(4n){border-right:0;}
  .mx-label{
    font-weight:600;color:var(--t1);font-size:13.5px;background:rgba(255,255,255,.02);
  }
  .mx-reco{
    background:rgba(43,232,184,.06);
    box-shadow:inset 1px 0 0 rgba(43,232,184,.30),inset -1px 0 0 rgba(43,232,184,.30);
  }
  .mx-head.mx-reco{
    background:rgba(43,232,184,.10);
    box-shadow:inset 1px 0 0 rgba(43,232,184,.45),inset -1px 0 0 rgba(43,232,184,.45),inset 0 -1px 0 rgba(43,232,184,.25);
  }
  .mx-cell.mx-action{padding:14px 18px;}
  .mx-cell.mx-action .btn{width:100%;height:40px;font-size:13px;padding:0 12px;}
  .matrix > div:nth-last-child(-n+4){border-bottom:0;}
  .ok{color:var(--brand);font-weight:700;}
  .dash{color:var(--t3);}

  /* ---------- scene ---------- */
  .scene-list{list-style:none;margin:0;padding:0;display:grid;gap:14px;}
  .scene-list li{
    display:flex;gap:12px;padding:16px 18px;border-radius:14px;
    background:rgba(255,255,255,.035);border:1px solid var(--line);
    transition:border-color .2s var(--ease),transform .2s var(--ease);
  }
  .scene-list li:hover{border-color:rgba(43,232,184,.32);transform:translateY(-2px);}
  .scene-idx{
    flex:0 0 28px;height:28px;border-radius:999px;display:grid;place-items:center;
    font-size:12.5px;font-weight:700;color:#AFA2FF;background:rgba(122,92,255,.14);
    border:1px solid rgba(122,92,255,.36);
  }
  .scene-list strong{display:block;font-size:14.5px;color:var(--t1);margin-bottom:2px;}
  .scene-list p{margin:0;font-size:13.5px;color:var(--t2);line-height:1.7;}
  .figure-cap{font-size:12.5px;color:var(--t3);text-align:center;margin-top:12px;}

  /* ---------- steps ---------- */
  .steps{display:grid;gap:18px;}
  @media (min-width:768px){ .steps{grid-template-columns:repeat(4,1fr);gap:20px;} }
  .step{
    position:relative;padding:22px;border-radius:var(--card-r);
    background:var(--ink-2);border:1px solid var(--line);
    transition:border-color .2s var(--ease),transform .2s var(--ease);
  }
  .step:hover{border-color:rgba(43,232,184,.35);transform:translateY(-2px);}
  .step-num{
    width:36px;height:36px;border-radius:999px;display:grid;place-items:center;
    font-weight:700;color:#04140F;background:var(--brand);
    box-shadow:0 0 0 6px rgba(43,232,184,.10);
  }
  .step-time{font-size:12.5px;color:var(--t3);letter-spacing:.04em;margin-top:14px;}
  .step h3{margin-top:6px;}
  .step p{font-size:13.5px;color:var(--t2);margin:8px 0 0;}

  /* ---------- faq ---------- */
  .faq-wrap{overflow:hidden;}
  .faq-item{border-bottom:1px solid var(--line);}
  .faq-item:last-child{border-bottom:0;}
  .faq-q{
    width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:18px 22px;text-align:left;font-size:16px;font-weight:600;color:var(--t1);
    transition:color .2s var(--ease);
  }
  .faq-q:hover{color:var(--brand);}
  .faq-q .ico{
    flex:0 0 auto;font-size:20px;line-height:1;color:var(--brand);
    transition:transform .25s var(--ease);
  }
  .faq-item.open .faq-q .ico{transform:rotate(45deg);}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .32s var(--ease);}
  .faq-item.open .faq-a{max-height:340px;}
  .faq-a-inner{
    padding:0 22px 20px 22px;margin-left:22px;border-left:2px solid var(--brand);
    font-size:14.5px;color:var(--t2);line-height:1.85;
  }

  /* ---------- form ---------- */
  .signup-wrap{
    display:grid;gap:32px;padding:28px;
  }
  @media (min-width:1024px){
    .signup-wrap{grid-template-columns:.85fr 1.15fr;gap:44px;padding:40px;}
  }
  .signup-notes{list-style:none;margin:0;padding:0;display:grid;gap:10px;}
  .signup-notes li{position:relative;padding-left:20px;font-size:13.5px;color:var(--t2);}
  .signup-notes li::before{
    content:"";position:absolute;left:0;top:10px;width:7px;height:7px;border-radius:999px;
    background:var(--brand);box-shadow:0 0 8px rgba(43,232,184,.7);
  }
  .field{margin-bottom:16px;}
  .field > label{display:block;font-size:13.5px;color:var(--t2);margin-bottom:8px;}
  .input{
    width:100%;background:var(--ink-3);border:1px solid var(--line);border-radius:var(--btn-r);
    padding:12px 14px;font-size:15px;color:var(--t1);
    transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
  }
  .input::placeholder{color:var(--t3);}
  .input:hover{border-color:rgba(255,255,255,.2);}
  .input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(43,232,184,.12);}
  .input.error{border-color:#FF5A66;box-shadow:0 0 0 4px rgba(255,90,102,.12);}
  select.input{
    appearance:none;-webkit-appearance:none;
    background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%239FB0CC' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
    background-repeat:no-repeat;background-position:right 14px center;padding-right:42px;
  }
  textarea.input{resize:vertical;min-height:96px;line-height:1.7;}
  .err-msg{display:none;font-size:13px;color:#FF5A66;margin:6px 0 0;}
  .err-msg.show{display:block;}
  .stepper{
    display:flex;align-items:center;width:152px;height:46px;
    border:1px solid var(--line);border-radius:var(--btn-r);background:var(--ink-3);overflow:hidden;
  }
  .stepper button{
    width:46px;height:100%;display:grid;place-items:center;
    color:var(--brand);font-size:18px;line-height:1;transition:background .2s var(--ease);
  }
  .stepper button:hover{background:rgba(43,232,184,.12);}
  .stepper output{flex:1;text-align:center;font-size:16px;font-weight:700;color:var(--t1);}
  .check-row{
    display:flex;gap:10px;align-items:flex-start;font-size:13.5px;color:var(--t2);
    margin-top:6px;cursor:pointer;line-height:1.7;
  }
  .check-row input{
    appearance:none;-webkit-appearance:none;flex:0 0 18px;width:18px;height:18px;margin-top:3px;
    border:1px solid rgba(255,255,255,.24);border-radius:5px;background:var(--ink-3);
    transition:all .2s var(--ease);cursor:pointer;position:relative;
  }
  .check-row input:checked{background:var(--brand);border-color:var(--brand);}
  .check-row input:checked::after{
    content:"";position:absolute;left:5px;top:1px;width:5px;height:10px;
    border:solid #04140F;border-width:0 2px 2px 0;transform:rotate(45deg);
  }
  .signup-success{text-align:center;padding:26px 8px;}
  .success-icon{
    width:56px;height:56px;margin:0 auto 18px;border-radius:999px;display:grid;place-items:center;
    font-size:26px;font-weight:700;color:#04140F;background:var(--brand);
    box-shadow:0 0 0 8px rgba(43,232,184,.12),0 12px 30px rgba(43,232,184,.22);
  }

  /* ---------- sticky cta & to-top ---------- */
  .sticky-cta{
    position:fixed;left:0;right:0;bottom:0;z-index:60;
    display:flex;align-items:center;gap:12px;
    padding:10px 16px calc(10px + env(safe-area-inset-bottom));
    background:rgba(6,9,18,.92);backdrop-filter:blur(14px);
    border-top:1px solid var(--line);
  }
  @media (min-width:768px){ .sticky-cta{display:none;} }
  .to-top{
    position:fixed;right:16px;bottom:88px;z-index:60;
    width:44px;height:44px;border-radius:999px;display:grid;place-items:center;
    background:rgba(11,18,34,.92);border:1px solid var(--line);color:var(--brand);
    opacity:0;pointer-events:none;transition:all .25s var(--ease);
  }
  .to-top.show{opacity:1;pointer-events:auto;}
  .to-top:hover{border-color:rgba(43,232,184,.4);transform:translateY(-2px);}
  @media (min-width:768px){ .to-top{bottom:24px;} }

  /* ---------- footer ---------- */
  .footer-group > summary{list-style:none;cursor:pointer;}
  .footer-group > summary::-webkit-details-marker{display:none;}
  .footer-col-title{
    font-size:14px;font-weight:700;color:var(--t1);letter-spacing:.02em;
    margin-bottom:16px;padding:0;border:0;
  }
  .footer-link{
    display:block;font-size:13.5px;color:var(--t2);padding:6px 0;margin:0;
    transition:color .2s var(--ease),transform .2s var(--ease);
  }
  .footer-link:hover{color:var(--brand);transform:translateX(2px);}
  @media (max-width:767px){
    .footer-group{margin-bottom:8px;border-bottom:1px solid var(--line);padding-bottom:8px;}
    .footer-group > summary{padding:6px 0;}
    .footer-group > div{padding-top:6px;}
  }
  @media (min-width:768px){
    .footer-group > summary{margin-bottom:0;}
  }

  /* ---------- motion ---------- */
  .reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease);}
  .reveal.in{opacity:1;transform:none;}
  @media (prefers-reduced-motion: reduce){
    *{animation:none !important;transition:none !important;}
    html{scroll-behavior:auto;}
    .reveal{opacity:1;transform:none;}
  }