/* roulang page: index */
:root{
  --ink-900:#0E0E14;
  --ink-800:#15151D;
  --ink-700:#1D1D28;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --fg:#F4F4F6;
  --fg-mid:#B9B9C4;
  --fg-muted:#8A8A98;
  --accent:#C6F24E;
  --accent-2:#7A5CFF;
  --danger:#FF5C5C;
  --paper:#F2F1EC;
  --paper-fg:#14141A;
  --radius-card:18px;
  --radius-img:14px;
  --radius-field:12px;
  --radius-chip:6px;
  --ease:cubic-bezier(.2,.8,.2,1);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-num:"Space Grotesk","Inter","PingFang SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--fg);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.no-scroll{overflow:hidden}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .24s var(--ease),border-color .24s var(--ease)}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:0}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;box-shadow:0 0 0 3px rgba(198,242,78,.18)}
::selection{background:rgba(198,242,78,.28)}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;letter-spacing:-.01em}

/* ---------- 顶部公告 ---------- */
.announce{
  height:36px;display:flex;align-items:center;
  background:var(--ink-800);
  border-bottom:1px solid var(--line);
  font-size:13px;color:var(--fg-muted);
}
.announce .container{display:flex;align-items:center;justify-content:space-between;gap:16px}
.announce strong{color:var(--accent);font-weight:600}
.announce a{color:var(--fg-mid);white-space:nowrap}
.announce a:hover{color:var(--accent)}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(14,14,20,.72);
  border-bottom:1px solid transparent;
  transition:background .24s var(--ease),border-color .24s var(--ease);
}
.site-header.is-scrolled{
  background:var(--ink-900);
  border-bottom-color:var(--line);
  backdrop-filter:blur(8px);
}
.nav-inner{display:flex;align-items:center;gap:24px;height:72px}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{
  width:28px;height:28px;border-radius:8px;
  border:2px solid var(--accent);
  display:flex;align-items:center;justify-content:center;
  position:relative;
}
.logo-mark::after{content:"";width:10px;height:10px;background:var(--accent);border-radius:3px}
.logo-text{font-family:var(--font-num);font-size:18px;font-weight:700;letter-spacing:-.01em}
.nav-links{display:flex;align-items:center;gap:28px;margin-left:8px}
.nav-link{
  position:relative;font-size:15px;color:var(--fg-mid);padding:6px 0;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--accent);
  transition:width .24s var(--ease);
}
.nav-link:hover{color:var(--fg)}
.nav-link:hover::after{width:100%}
.nav-link.is-active{color:var(--fg);font-weight:600}
.nav-link.is-active::after{width:100%}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto}
.search-toggle{
  width:40px;height:40px;border-radius:999px;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;color:var(--fg-mid);
  transition:border-color .24s var(--ease),color .24s var(--ease);
}
.search-toggle:hover{border-color:var(--line-strong);color:var(--fg)}
.search-box{
  width:0;opacity:0;overflow:hidden;pointer-events:none;
  transition:width .28s var(--ease),opacity .28s var(--ease);
}
.nav-inner.search-open .search-box{width:220px;opacity:1;pointer-events:auto}
.search-box input{
  width:100%;height:40px;border-radius:999px;
  background:var(--ink-800);border:1px solid var(--line);
  padding:0 16px;font-size:14px;color:var(--fg);
  transition:border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.search-box input::placeholder{color:var(--fg-muted)}
.search-box input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(198,242,78,.18)}
.link-login{font-size:15px;color:var(--fg-mid);padding:0 4px}
.link-login:hover{color:var(--fg)}
.burger{
  display:none;width:44px;height:44px;border-radius:10px;border:1px solid var(--line);
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.burger span{display:block;width:18px;height:2px;background:var(--fg);border-radius:2px;transition:transform .24s var(--ease),opacity .24s var(--ease)}
.burger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger[aria-expanded="true"] span:nth-child(2){opacity:0}
.burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* 移动抽屉 */
.drawer{
  position:fixed;inset:0;z-index:80;background:var(--ink-900);
  transform:translateY(-12px);opacity:0;pointer-events:none;
  transition:opacity .24s var(--ease),transform .24s var(--ease);
  padding:24px;overflow-y:auto;
}
.drawer.is-open{opacity:1;transform:translateY(0);pointer-events:auto}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}
.drawer-close{width:44px;height:44px;border-radius:10px;border:1px solid var(--line);color:var(--fg);font-size:20px;line-height:1}
.drawer-nav{display:flex;flex-direction:column;gap:4px;margin-bottom:28px}
.drawer-nav a{
  font-size:18px;padding:14px 0;border-bottom:1px solid var(--line);color:var(--fg);
}
.drawer-nav a.is-active{color:var(--accent)}
.drawer-search{margin-bottom:24px}
.drawer-search input{
  width:100%;height:48px;border-radius:var(--radius-field);
  background:var(--ink-800);border:1px solid var(--line);padding:0 16px;color:var(--fg);
}
.drawer-search input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(198,242,78,.18)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:999px;
  font-size:15px;font-weight:600;white-space:nowrap;
  transition:transform .24s var(--ease),background .24s var(--ease),border-color .24s var(--ease),color .24s var(--ease),filter .24s var(--ease);
}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--accent);color:#0E0E14}
.btn-primary:hover{transform:translateY(-1px);filter:brightness(1.06)}
.btn-ghost{border:1px solid var(--line-strong);color:var(--fg);background:transparent}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-1px)}
.btn-dark{background:var(--paper-fg);color:#F4F4F6}
.btn-dark:hover{transform:translateY(-1px);filter:brightness(1.15)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn[disabled]{opacity:.6;cursor:not-allowed;transform:none}

.text-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--fg-mid)}
.text-link:hover{color:var(--accent)}
.text-link .arrow{transition:transform .24s var(--ease)}
.text-link:hover .arrow{transform:translateX(4px)}

/* ---------- Hero ---------- */
.hero{position:relative;padding:104px 0 96px;border-bottom:1px solid var(--line)}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(circle at 70% 20%,#000 0%,transparent 68%);
}
.hero::after{
  content:"";position:absolute;width:360px;height:360px;right:-60px;top:-80px;border-radius:50%;
  background:radial-gradient(circle,rgba(198,242,78,.10),transparent 68%);pointer-events:none;
}
.hero-grid{position:relative;display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center}
.eyebrow{
  display:inline-block;font-family:var(--font-num);font-size:12px;letter-spacing:.14em;
  color:var(--fg-muted);border:1px solid var(--line);border-radius:var(--radius-chip);
  padding:6px 12px;margin-bottom:24px;background:var(--ink-800);
}
.hero h1{
  font-size:clamp(34px,5vw,68px);line-height:1.08;letter-spacing:-.02em;font-weight:700;
  font-family:var(--font-num),var(--font-cn);
}
.hero-sub{margin-top:22px;font-size:18px;line-height:1.7;color:var(--fg-mid);max-width:560px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-stats{display:flex;flex-wrap:wrap;gap:40px;margin-top:40px;padding-top:24px;border-top:1px solid var(--line)}
.hero-stats strong{display:block;font-family:var(--font-num);font-size:26px;font-weight:700;font-variant-numeric:tabular-nums}
.hero-stats span{font-size:13px;color:var(--fg-muted)}
.hero-visual{position:relative}
.hero-visual img{
  width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius-img);
  border:1px solid var(--line-strong);background:var(--ink-700);
}
.hero-frame{
  position:absolute;inset:-14px -14px 34px 34px;border:1px solid rgba(198,242,78,.45);
  border-radius:var(--radius-img);pointer-events:none;
}
.float-card{
  position:absolute;left:-18px;top:26px;
  background:var(--ink-800);border:1px solid var(--line-strong);border-radius:14px;
  padding:14px 18px;min-width:158px;
}
.float-card .float-label{display:block;font-size:12px;color:var(--fg-muted);letter-spacing:.08em}
.float-card strong{display:block;font-family:var(--font-num);font-size:28px;line-height:1.3;font-variant-numeric:tabular-nums}
.float-card .trend{font-size:12px}
.trend.up{color:var(--accent)}
.trend.down{color:var(--danger)}

/* ---------- 通用区块 ---------- */
.section{padding:104px 0;border-bottom:1px solid var(--line)}
.section:last-of-type{border-bottom:0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:48px}
.label-en{
  font-family:var(--font-num);font-size:12px;letter-spacing:.14em;color:var(--fg-muted);
  text-transform:uppercase;margin-bottom:12px;
}
.section-head h2{font-size:clamp(24px,3vw,32px);line-height:1.2;letter-spacing:-.01em}
.section-desc{margin-top:14px;font-size:15px;color:var(--fg-mid);max-width:640px}
.note{margin-top:20px;font-size:13px;color:var(--fg-muted)}

/* ---------- 指标看板 ---------- */
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.metric-card{
  background:var(--ink-700);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px 22px 20px;transition:transform .24s var(--ease),border-color .24s var(--ease);
}
.metric-card:hover{transform:translateY(-2px);border-color:rgba(198,242,78,.45)}
.metric-top{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line);margin-bottom:18px}
.metric-top svg{color:var(--accent)}
.metric-tag{font-size:12px;color:var(--fg-muted);letter-spacing:.08em}
.metric-value{font-family:var(--font-num);font-size:clamp(38px,5vw,64px);font-weight:700;line-height:1;font-variant-numeric:tabular-nums}
.metric-unit{font-size:40%;color:var(--fg-mid);margin-left:4px}
.metric-label{display:block;margin-top:12px;font-size:13px;color:var(--fg-muted)}
.metric-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:18px}
.metric-foot .scale{flex:1;height:4px;border-radius:999px;background:var(--ink-900);overflow:hidden}
.metric-foot .scale i{display:block;height:100%;background:var(--accent);border-radius:999px}
.metric-foot .scale i.alt{background:var(--accent-2)}
.metric-foot .delta{font-size:12px;font-variant-numeric:tabular-nums}

/* ---------- 能力矩阵 ---------- */
.matrix-grid{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start}
.matrix-aside{position:sticky;top:104px}
.matrix-aside h3{font-size:20px;font-weight:600;margin-bottom:14px}
.matrix-aside p{font-size:15px;color:var(--fg-mid)}
.matrix-aside .aside-line{width:4px;height:44px;background:var(--accent);border-radius:2px;margin-bottom:20px}
.matrix-list{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.matrix-item{
  position:relative;background:var(--ink-700);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px 24px;transition:transform .24s var(--ease),border-color .24s var(--ease);
}
.matrix-item:hover{transform:translateY(-2px) translateX(4px);border-color:rgba(198,242,78,.45)}
.matrix-item:hover .matrix-num{color:var(--accent)}
.matrix-item.wide{grid-column:span 2}
.matrix-num{
  font-family:var(--font-num);font-size:40px;font-weight:700;line-height:1;
  color:transparent;-webkit-text-stroke:1px var(--line-strong);
  transition:color .24s var(--ease);display:block;margin-bottom:16px;
}
.matrix-item h3{font-size:18px;font-weight:600;margin-bottom:10px}
.matrix-item p{font-size:14px;line-height:1.7;color:var(--fg-mid)}
.matrix-item .text-link{margin-top:16px}

/* ---------- 反白区段 ---------- */
.paper{background:var(--paper);color:var(--paper-fg);border-bottom:1px solid rgba(20,20,26,.12)}
.paper .label-en{color:rgba(20,20,26,.5)}
.paper .section-head h2{color:var(--paper-fg)}
.paper .section-desc,.paper .note{color:rgba(20,20,26,.68)}
.paper .text-link{color:rgba(20,20,26,.7)}
.paper .text-link:hover{color:#4B34B8}

/* 对比条 */
.compare{display:grid;grid-template-columns:6fr 6fr;gap:56px;align-items:start}
.compare-row{margin-bottom:32px}
.compare-row .row-head{display:flex;align-items:baseline;justify-content:space-between;margin-bottom:10px}
.compare-row .row-head span{font-size:14px;font-weight:600}
.compare-row .row-head b{font-family:var(--font-num);font-size:15px;font-variant-numeric:tabular-nums}
.bar-track{height:16px;border-radius:999px;background:rgba(20,20,26,.1);overflow:hidden}
.bar-track i{display:block;height:100%;border-radius:999px;transition:width .6s var(--ease)}
.bar-before i{background:rgba(20,20,26,.32);width:38%}
.bar-after i{background:var(--accent-2);width:86%}
.conclusion h3{font-size:22px;font-weight:700;margin-bottom:16px}
.conclusion p{font-size:15px;color:rgba(20,20,26,.74)}
.point-list{margin-top:24px;display:flex;flex-direction:column;gap:16px}
.point-list li{
  position:relative;padding-left:18px;font-size:15px;color:rgba(20,20,26,.82);
}
.point-list li::before{
  content:"";position:absolute;left:0;top:9px;width:4px;height:18px;border-radius:2px;background:var(--accent-2);
}

/* ---------- 最新信息 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{
  display:flex;flex-direction:column;background:var(--ink-700);
  border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;
  transition:transform .24s var(--ease),border-color .24s var(--ease);
}
.news-card:hover{transform:translateY(-2px);border-color:rgba(198,242,78,.45)}
.news-thumb{position:relative;margin:14px 14px 0;border-radius:var(--radius-img);overflow:hidden}
.news-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;background:var(--ink-800);transition:transform .24s var(--ease)}
.news-card:hover .news-thumb img{transform:scale(1.03)}
.chip{
  position:absolute;left:10px;top:10px;
  background:rgba(14,14,20,.82);border:1px solid var(--line-strong);color:var(--accent);
  font-size:12px;padding:4px 10px;border-radius:var(--radius-chip);letter-spacing:.04em;
}
.news-body{padding:20px;display:flex;flex-direction:column;flex:1}
.news-title{
  font-size:17px;font-weight:600;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-excerpt{
  margin-top:10px;font-size:14px;line-height:1.7;color:var(--fg-mid);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{
  margin-top:auto;padding-top:18px;display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--fg-muted);
}
.news-meta .arrow{transition:transform .24s var(--ease)}
.news-card:hover .news-meta .arrow{transform:translateX(4px);color:var(--accent)}
.empty-state{
  min-height:180px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;
  border:1px dashed var(--line-strong);border-radius:var(--radius-card);background:var(--ink-800);
  color:var(--fg-muted);text-align:center;padding:32px;
}
.empty-state svg{color:var(--fg-muted)}
.empty-state strong{color:var(--fg-mid);font-size:16px;font-weight:600}
.skeleton-card{background:var(--ink-700);border-radius:var(--radius-card);padding:14px;border:1px solid var(--line)}
.skeleton-card i{display:block;background:var(--ink-800);border-radius:10px}
.skeleton-card i:nth-child(1){height:150px;margin-bottom:14px}
.skeleton-card i:nth-child(2){height:16px;width:82%;margin-bottom:10px}
.skeleton-card i:nth-child(3){height:16px;width:56%}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:4fr 8fr;gap:56px;align-items:start}
.faq-aside h2{font-size:clamp(24px,3vw,32px);line-height:1.2;margin-bottom:16px}
.faq-aside p{font-size:15px;color:var(--fg-mid)}
.faq-aside .btn{margin-top:24px}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  min-height:64px;padding:18px 0;text-align:left;font-size:17px;font-weight:600;color:var(--fg);
  transition:color .24s var(--ease);
}
.faq-q:hover{color:var(--accent)}
.faq-q .sign{
  flex:0 0 auto;width:28px;height:28px;border-radius:999px;border:1px solid var(--line-strong);
  display:flex;align-items:center;justify-content:center;font-size:16px;line-height:1;
  transition:transform .24s var(--ease),border-color .24s var(--ease),color .24s var(--ease);
}
.faq-item.is-open .faq-q .sign{transform:rotate(45deg);border-color:var(--accent);color:var(--accent)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s var(--ease)}
.faq-a p{padding:0 0 22px;font-size:15px;line-height:1.8;color:var(--fg-mid);max-width:640px}

/* ---------- 表单 ---------- */
.contact-grid{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:start}
.contact-copy h2{font-size:clamp(24px,3vw,32px);line-height:1.2;margin-bottom:18px}
.contact-copy p{font-size:15px;color:rgba(20,20,26,.72)}
.form-card{
  background:#fff;border:1px solid rgba(20,20,26,.1);border-radius:var(--radius-card);
  padding:32px;box-shadow:0 2px 12px rgba(20,20,26,.08);
}
.field{margin-bottom:20px}
.field label{display:block;font-size:14px;font-weight:600;margin-bottom:8px;color:var(--paper-fg)}
.field input,.field select,.field textarea{
  width:100%;background:#F7F6F2;border:1px solid rgba(20,20,26,.14);
  border-radius:var(--radius-field);padding:0 14px;height:48px;color:var(--paper-fg);
  transition:border-color .24s var(--ease),box-shadow .24s var(--ease),background .24s var(--ease);
}
.field textarea{height:120px;padding:12px 14px;resize:vertical;line-height:1.7}
.field input::placeholder,.field textarea::placeholder{color:rgba(20,20,26,.4)}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:#6F4DFF;background:#fff;box-shadow:0 0 0 3px rgba(122,92,255,.18);
}
.field.error input,.field.error textarea{border-color:var(--danger)}
.field .err-msg{display:none;margin-top:6px;font-size:13px;color:var(--danger)}
.field.error .err-msg{display:block}
.form-foot{display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-top:8px}
.privacy{font-size:13px;color:rgba(20,20,26,.55);margin-top:14px}
.form-ok{
  display:none;align-items:center;gap:10px;margin-top:18px;padding:12px 16px;
  border-radius:var(--radius-field);background:rgba(122,92,255,.1);color:#4B34B8;font-size:14px;
}
.form-ok.is-visible{display:flex}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-800);border-top:1px solid var(--line);padding:72px 0 28px}
.footer-grid{display:grid;grid-template-columns:4fr 2.4fr 2.4fr 3.2fr;gap:40px}
.footer-brand .logo{margin-bottom:16px}
.footer-brand p{font-size:14px;color:var(--fg-muted);max-width:300px}
.socials{display:flex;gap:10px;margin-top:20px}
.socials span{
  width:36px;height:36px;border-radius:10px;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;color:var(--fg-muted);font-size:13px;
  transition:border-color .24s var(--ease),color .24s var(--ease);
}
.socials span:hover{border-color:var(--accent);color:var(--accent)}
.footer-col h4{font-size:14px;font-weight:600;margin-bottom:18px;letter-spacing:.04em}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col a,.footer-col li{font-size:14px;color:var(--fg-muted)}
.footer-col a:hover{color:var(--fg)}
.footer-bottom{
  margin-top:56px;padding-top:24px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:16px;justify-content:space-between;
  font-size:13px;color:var(--fg-muted);
}
.footer-bottom a:hover{color:var(--fg)}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- 断点 ---------- */
@media (max-width:1279px){
  .container{width:92%;padding:0}
  .faq-layout,.matrix-grid{gap:40px}
}
@media (max-width:1023px){
  .nav-links,.link-login,.search-toggle,.search-box{display:none}
  .nav-inner .btn-sm{display:none}
  .burger{display:flex}
  .hero{padding:72px 0}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-visual{order:-1}
  .hero-frame{inset:-10px -10px 24px 24px}
  .section{padding:72px 0}
  .metrics{grid-template-columns:repeat(2,1fr)}
  .matrix-grid{grid-template-columns:1fr}
  .matrix-aside{position:static}
  .compare,.faq-layout,.contact-grid{grid-template-columns:1fr;gap:36px}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:32px}
}
@media (max-width:767px){
  body{font-size:15px}
  .section{padding:56px 0}
  .hero{padding:56px 0}
  .hero h1{font-size:clamp(30px,8vw,40px)}
  .hero-sub{font-size:16px}
  .hero-stats{gap:24px}
  .hero-stats strong{font-size:22px}
  .section-head{flex-direction:column;align-items:flex-start;margin-bottom:32px}
  .metrics{grid-template-columns:repeat(2,1fr);gap:16px}
  .matrix-list{grid-template-columns:1fr}
  .matrix-item.wide{grid-column:span 1}
  .news-grid{grid-template-columns:1fr}
  .form-card{padding:22px}
  .btn{width:100%}
  .hero-cta .btn,.contact-copy .btn{width:100%}
  .float-card{left:0;top:12px;padding:12px 14px;min-width:136px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:10px}
}
@media (max-width:520px){
  .metrics{grid-template-columns:1fr}
  .announce .container span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .announce a{display:none}
}
@media (prefers-reduced-motion: reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: category1 */
:root{
  --ink-900:#0E0E14;
  --ink-800:#15151D;
  --ink-700:#1D1D28;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --fg:#F4F4F6;
  --fg-mid:#B9B9C4;
  --fg-muted:#8A8A98;
  --accent:#C6F24E;
  --accent-2:#7A5CFF;
  --danger:#FF5C5C;
  --paper:#F2F1EC;
  --paper-fg:#14141A;
  --paper-muted:#5A5A63;
  --radius-card:18px;
  --radius-img:14px;
  --radius-input:12px;
  --radius-chip:6px;
  --container:1200px;
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-en:"Space Grotesk","Inter",var(--font-cn);
  --ease:cubic-bezier(.2,.8,.2,1);
  --t:240ms cubic-bezier(.2,.8,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--fg);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.005em;
  overflow-x:hidden;
}
body.is-locked{overflow:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;line-height:1.2;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
input,select,textarea{font-family:inherit;font-size:15px}
::selection{background:rgba(198,242,78,.28);color:#fff}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:80px 80px;
  opacity:.35;
}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;position:relative;z-index:1}
.num{font-family:var(--font-en);font-variant-numeric:tabular-nums}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(14,14,20,.72);
  border-bottom:1px solid transparent;
  transition:background var(--t),border-color var(--t),backdrop-filter var(--t);
}
.site-header.is-scrolled{
  background:rgba(14,14,20,.94);
  border-bottom-color:var(--line);
  backdrop-filter:blur(8px);
}
.nav-inner{
  height:72px;
  display:flex;
  align-items:center;
  gap:32px;
}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:28px;height:28px;border-radius:8px;
  border:1.5px solid var(--accent);
  background:linear-gradient(135deg,rgba(198,242,78,.28),rgba(122,92,255,.24));
  position:relative;
}
.logo-mark::after{
  content:"";position:absolute;inset:7px;
  background:var(--accent);border-radius:3px;
}
.logo-text{font-family:var(--font-en);font-weight:700;font-size:18px;letter-spacing:-.01em}
.nav-links{display:flex;align-items:center;gap:28px;margin-left:12px}
.nav-link{
  position:relative;
  font-size:15px;
  color:var(--fg-mid);
  padding:6px 0;
  transition:color var(--t);
  white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--accent);transition:width var(--t);
}
.nav-link:hover{color:var(--fg)}
.nav-link:hover::after{width:100%}
.nav-link.is-active{color:var(--fg);font-weight:600}
.nav-link.is-active::after{width:100%}
.nav-actions{display:flex;align-items:center;gap:14px;margin-left:auto}
.search-toggle{
  width:38px;height:38px;border-radius:10px;
  background:transparent;border:1px solid var(--line);
  color:var(--fg-mid);display:inline-flex;align-items:center;justify-content:center;
  cursor:pointer;transition:all var(--t);
}
.search-toggle:hover{border-color:rgba(198,242,78,.5);color:var(--accent)}
.search-box{width:0;overflow:hidden;transition:width var(--t)}
.nav-actions.is-open .search-box{width:220px}
.search-box input{
  width:220px;height:38px;padding:0 14px;
  background:var(--ink-800);border:1px solid var(--line);
  border-radius:var(--radius-input);color:var(--fg);
  transition:border-color var(--t),box-shadow var(--t);
}
.search-box input::placeholder{color:var(--fg-muted)}
.search-box input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(198,242,78,.18)}
.link-login{font-size:15px;color:var(--fg-mid);transition:color var(--t)}
.link-login:hover{color:#fff}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:600;
  padding:13px 26px;cursor:pointer;
  transition:transform var(--t),background var(--t),color var(--t),border-color var(--t),filter var(--t);
}
.btn-sm{padding:10px 20px;font-size:14px}
.btn-primary{background:var(--accent);color:#101014}
.btn-primary:hover{transform:translateY(-1px);filter:brightness(1.06)}
.btn-ghost{background:transparent;color:var(--fg);border-color:var(--line-strong)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-1px)}
.btn-dark{background:var(--paper-fg);color:#fff}
.btn-dark:hover{transform:translateY(-1px);filter:brightness(1.15)}
.btn:active{transform:translateY(1px)}
.btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px;box-shadow:0 0 0 3px rgba(198,242,78,.18)}
.burger{
  display:none;width:40px;height:40px;border-radius:10px;
  background:transparent;border:1px solid var(--line);
  flex-direction:column;justify-content:center;align-items:center;gap:5px;cursor:pointer;
}
.burger span{display:block;width:18px;height:1.6px;background:var(--fg);transition:all var(--t)}
.burger[aria-expanded="true"] span:nth-child(1){transform:translateY(6.6px) rotate(45deg)}
.burger[aria-expanded="true"] span:nth-child(2){opacity:0}
.burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-6.6px) rotate(-45deg)}
.mobile-drawer{
  display:none;
  position:fixed;inset:0;z-index:90;
  background:var(--ink-900);
  padding:88px 24px 32px;
}
.mobile-drawer.is-open{display:block}
.mobile-drawer nav{display:flex;flex-direction:column;gap:6px;margin-bottom:28px}
.mobile-drawer nav a{
  font-size:18px;font-weight:600;color:var(--fg-mid);
  padding:14px 0;border-bottom:1px solid var(--line);
}
.mobile-drawer nav a.is-active{color:var(--accent)}
.mobile-drawer .mobile-search input{
  width:100%;height:48px;padding:0 14px;
  background:var(--ink-800);border:1px solid var(--line);
  border-radius:var(--radius-input);color:var(--fg);margin-bottom:18px;
}
.mobile-drawer .btn{width:100%}

/* ---------- layout helpers ---------- */
.section{padding:96px 0;border-top:1px solid var(--line)}
.section:first-of-type{border-top:0}
.eyebrow{
  font-family:var(--font-en);
  font-size:12px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--fg-muted);margin-bottom:14px;display:block;
}
.section-title{font-size:32px;font-weight:700;margin-bottom:14px}
.section-lead{color:var(--fg-mid);max-width:720px;font-size:16px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap}
.link-more{font-size:14px;color:var(--fg-mid);display:inline-flex;align-items:center;gap:6px;transition:color var(--t)}
.link-more:hover{color:var(--accent)}
.link-more span.arw{transition:transform var(--t)}
.link-more:hover span.arw{transform:translateX(4px)}

/* ---------- breadcrumb ---------- */
.crumb{
  padding:22px 0 0;
  font-size:13px;color:var(--fg-muted);
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
}
.crumb a{color:var(--fg-muted);transition:color var(--t)}
.crumb a:hover{color:var(--accent)}
.crumb .sep{opacity:.5}
.crumb .now{color:var(--fg)}

/* ---------- hero ---------- */
.page-hero{padding:44px 0 72px;border-top:0}
.page-hero h1{
  font-size:clamp(34px,5vw,68px);
  font-weight:700;letter-spacing:-.02em;line-height:1.08;
  max-width:19ch;margin-bottom:24px;
}
.page-hero h1 em{font-style:normal;color:var(--accent)}
.page-hero .lead{
  color:var(--fg-mid);font-size:17px;line-height:1.85;max-width:740px;
}
.page-hero .lead + .lead{margin-top:12px}
.hero-meta{
  display:flex;gap:36px;flex-wrap:wrap;margin-top:38px;
  padding-top:26px;border-top:1px solid var(--line);
}
.hero-meta div{display:flex;flex-direction:column;gap:4px}
.hero-meta .k{font-family:var(--font-en);font-size:26px;font-weight:700;color:var(--accent);font-variant-numeric:tabular-nums}
.hero-meta .v{font-size:13px;color:var(--fg-muted)}

/* ---------- chips ---------- */
.chip-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:32px}
.chip{
  display:inline-flex;align-items:center;gap:8px;
  height:34px;padding:0 14px;
  border-radius:var(--radius-chip);
  border:1px solid var(--line-strong);
  color:var(--fg-mid);font-size:14px;
  transition:all var(--t);
}
.chip:hover{border-color:rgba(198,242,78,.5);color:var(--fg)}
.chip.is-current{background:var(--accent);border-color:var(--accent);color:#101014;font-weight:600}
.chip.is-alt{border-color:rgba(122,92,255,.4);color:#CFC6FF}
.chip.is-alt:hover{border-color:var(--accent-2);color:#fff}

/* ---------- split main ---------- */
.split{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:start}
.prose p{color:var(--fg-mid);margin-bottom:18px}
.prose p strong{color:var(--fg)}
.num-list{margin-top:32px;display:flex;flex-direction:column}
.num-list li{
  display:flex;gap:20px;padding:22px 0;border-top:1px solid var(--line);
  transition:transform var(--t);
}
.num-list li:hover .n{color:var(--accent);-webkit-text-stroke-color:var(--accent)}
.num-list li:hover{transform:translateX(4px)}
.n{
  font-family:var(--font-en);font-size:34px;font-weight:700;line-height:1;
  color:transparent;-webkit-text-stroke:1px var(--line-strong);
  min-width:62px;transition:color var(--t),-webkit-text-stroke-color var(--t);
  font-variant-numeric:tabular-nums;
}
.num-list h3{font-size:18px;font-weight:600;margin-bottom:8px}
.num-list p{font-size:14px;line-height:1.75;color:var(--fg-mid)}

/* ---------- visual block ---------- */
.visual{position:relative}
.visual-frame{
  position:relative;border-radius:var(--radius-img);overflow:hidden;
  border:1px solid var(--line);aspect-ratio:16/10;background:var(--ink-700);
}
.visual-frame img{width:100%;height:100%;object-fit:cover}
.visual::after{
  content:"";position:absolute;left:-16px;bottom:-16px;width:120px;height:120px;
  border-left:1.5px solid var(--accent);border-bottom:1.5px solid var(--accent);
  border-radius:0 0 0 14px;pointer-events:none;
}
.data-card{
  position:absolute;top:18px;left:18px;
  background:var(--ink-800);border:1px solid var(--line-strong);
  border-radius:14px;padding:14px 18px;min-width:150px;
}
.data-card .dk{font-size:12px;color:var(--fg-muted);letter-spacing:.06em}
.data-card .dv{font-family:var(--font-en);font-size:24px;font-weight:700;color:var(--accent);font-variant-numeric:tabular-nums}
.data-card .du{font-size:12px;color:var(--fg-muted);margin-left:3px}

/* ---------- metrics ---------- */
.metric-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.metric{
  background:var(--ink-800);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:26px 24px;
  transition:transform var(--t),border-color var(--t);
}
.metric:hover{transform:translateY(-2px);border-color:rgba(198,242,78,.45)}
.metric .top{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line);margin-bottom:20px}
.metric .ic{width:26px;height:26px;color:var(--accent)}
.metric .tag{font-size:12px;color:var(--fg-muted);letter-spacing:.08em}
.metric-num{font-family:var(--font-en);font-size:52px;font-weight:700;line-height:1;color:var(--fg);font-variant-numeric:tabular-nums}
.metric-num .u{font-size:40%;color:var(--fg-muted);margin-left:4px;font-weight:600}
.metric .lbl{font-size:13px;color:var(--fg-muted);margin-top:10px}
.metric .delta{display:flex;align-items:center;gap:8px;font-size:13px;margin-top:16px;color:var(--accent)}
.metric .delta.down{color:var(--danger)}
.bar{height:4px;border-radius:2px;background:var(--ink-700);overflow:hidden;margin-top:12px}
.bar i{display:block;height:100%;background:var(--accent);border-radius:2px;width:0;transition:width 900ms var(--ease)}
.bar.v2 i{background:var(--accent-2)}
.bar.v3 i{background:linear-gradient(90deg,var(--accent),#7ad14e)}

/* ---------- checklist ---------- */
.check-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:0 48px}
.check-item{
  display:flex;gap:16px;padding:22px 0;border-top:1px solid var(--line);
}
.check-item .vline{width:4px;border-radius:2px;background:var(--accent);flex-shrink:0;align-self:stretch}
.check-item:nth-child(even) .vline{background:var(--accent-2)}
.check-item h3{font-size:17px;font-weight:600;margin-bottom:6px}
.check-item p{font-size:14px;line-height:1.75;color:var(--fg-mid)}

/* ---------- faq ---------- */
.faq-wrap{display:grid;grid-template-columns:4fr 8fr;gap:56px;align-items:start}
.faq-side h2{font-size:32px;font-weight:700;margin-bottom:14px}
.faq-side p{color:var(--fg-mid);font-size:15px;margin-bottom:22px}
.faq-side a.contact{color:var(--accent);font-size:15px;display:inline-flex;gap:6px;align-items:center}
.faq-side a.contact span.arw{transition:transform var(--t)}
.faq-side a.contact:hover span.arw{transform:translateX(4px)}
.faq-item{border-top:1px solid var(--line)}
.faq-item:last-child{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;background:transparent;border:0;color:var(--fg);
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  min-height:64px;padding:20px 0;text-align:left;
  font-size:17px;font-weight:600;cursor:pointer;
  transition:color var(--t);
}
.faq-q:hover{color:var(--accent)}
.faq-q:focus-visible{outline:2px solid var(--accent);outline-offset:-2px;border-radius:8px}
.faq-icon{position:relative;width:18px;height:18px;flex-shrink:0}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--fg-mid);transition:transform var(--t),background var(--t);
}
.faq-icon::before{left:0;top:8px;width:18px;height:1.6px}
.faq-icon::after{left:8px;top:0;width:1.6px;height:18px}
.faq-item.is-open .faq-icon::before{background:var(--accent)}
.faq-item.is-open .faq-icon::after{transform:rotate(90deg) scaleY(0);background:var(--accent)}
.faq-item.is-open .faq-q{color:var(--fg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 240ms var(--ease)}
.faq-a-inner{padding:0 0 24px;color:var(--fg-mid);font-size:15px;line-height:1.8;max-width:760px}

/* ---------- cta band (paper) ---------- */
.paper-band{background:var(--paper);color:var(--paper-fg)}
.paper-band .section-title{color:var(--paper-fg)}
.paper-band .eyebrow{color:var(--paper-muted)}
.cta-inner{display:grid;grid-template-columns:6fr 6fr;gap:56px;align-items:center}
.cta-inner p{color:var(--paper-muted);font-size:16px}
.cta-points{margin-top:26px;display:flex;flex-direction:column;gap:14px}
.cta-points li{display:flex;gap:12px;font-size:15px;color:#2A2A32}
.cta-points li::before{
  content:"";width:4px;border-radius:2px;background:var(--paper-fg);
  flex-shrink:0;align-self:stretch;min-height:20px;
}
.cta-card{
  background:#fff;border-radius:var(--radius-card);padding:32px;
  box-shadow:0 2px 12px rgba(20,20,26,.08);
}
.cta-card h3{font-size:20px;font-weight:700;color:var(--paper-fg);margin-bottom:10px}
.cta-card p{font-size:14px;color:var(--paper-muted);margin-bottom:22px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}
.paper-band .btn-ghost{border-color:rgba(20,20,26,.24);color:var(--paper-fg)}
.paper-band .btn-ghost:hover{border-color:var(--paper-fg);color:var(--paper-fg);background:rgba(20,20,26,.06)}
.paper-note{font-size:13px;color:var(--paper-muted);margin-top:18px;display:block}

/* ---------- images ---------- */
.media-wide{
  border-radius:var(--radius-img);overflow:hidden;border:1px solid var(--line);
  aspect-ratio:16/9;background:var(--ink-700);
}
.media-wide img{width:100%;height:100%;object-fit:cover;transition:transform var(--t)}
.media-wide:hover img{transform:scale(1.03)}

/* ---------- footer ---------- */
.site-footer{border-top:1px solid var(--line);background:var(--ink-900);padding:72px 0 28px;position:relative;z-index:1}
.footer-grid{display:grid;grid-template-columns:5fr 3fr 3fr 4fr;gap:40px;padding-bottom:48px;border-bottom:1px solid var(--line)}
.footer-brand .logo{margin-bottom:18px}
.footer-brand p{color:var(--fg-muted);font-size:14px;line-height:1.8;max-width:340px}
.socials{display:flex;gap:10px;margin-top:20px}
.socials span{
  width:34px;height:34px;border-radius:10px;border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:12px;color:var(--fg-muted);
}
.footer-col h4{font-size:15px;font-weight:600;margin-bottom:18px;color:var(--fg)}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col li,.footer-col a{font-size:14px;color:var(--fg-muted);transition:color var(--t);line-height:1.6}
.footer-col a:hover{color:var(--fg)}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding-top:24px;font-size:13px;color:var(--fg-muted);
}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 600ms var(--ease),transform 600ms var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .container{max-width:92%}
  .split{gap:40px}
}
@media (max-width:1024px){
  .nav-links{display:none}
  .search-box,.search-toggle{display:none}
  .burger{display:flex}
  .split{grid-template-columns:1fr;gap:40px}
  .faq-wrap{grid-template-columns:1fr;gap:32px}
  .cta-inner{grid-template-columns:1fr;gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .section{padding:72px 0}
  .visual::after{display:none}
}
@media (max-width:768px){
  .page-hero{padding:32px 0 56px}
  .page-hero h1{max-width:none}
  .metric-grid{grid-template-columns:repeat(2,1fr);gap:16px}
  .check-grid{grid-template-columns:1fr;gap:0}
  .section-title{font-size:26px}
  .faq-side h2{font-size:26px}
  .hero-meta{gap:24px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (max-width:520px){
  .container{padding:0 18px}
  .metric-grid{grid-template-columns:1fr}
  .btn{width:100%}
  .cta-actions{flex-direction:column}
  .nav-inner{height:60px;gap:16px}
  .logo-text{font-size:16px}
  .num-list li{gap:14px}
  .n{font-size:26px;min-width:44px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition-duration:.01ms!important;animation-duration:.01ms!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: article */
:root{
  --ink-900:#0E0E14;
  --ink-800:#15151D;
  --ink-700:#1D1D28;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --fg:#F4F4F6;
  --fg-mid:#B9B9C4;
  --fg-muted:#8A8A98;
  --accent:#C6F24E;
  --accent-2:#7A5CFF;
  --danger:#FF5C5C;
  --paper:#F2F1EC;
  --paper-fg:#14141A;
  --radius-card:18px;
  --radius-img:14px;
  --radius-input:12px;
  --radius-chip:6px;
  --dur:240ms;
  --ease:cubic-bezier(.2,.8,.2,1);
  --container:1200px;
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC",system-ui,-apple-system,"Microsoft YaHei",sans-serif;
  --font-en:"Space Grotesk","Inter","PingFang SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--fg);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease),opacity var(--dur) var(--ease);}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;font-family:var(--font-en),var(--font-cn);letter-spacing:-.02em;font-weight:700;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;box-shadow:0 0 0 3px rgba(198,242,78,.18);}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
@media (min-width:1024px) and (max-width:1279px){.container{width:92%;padding:0;}}

/* ---------- 顶部公告 ---------- */
.topbar{background:var(--ink-800);border-bottom:1px solid var(--line);}
.topbar-inner{min-height:36px;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;padding-top:6px;padding-bottom:6px;}
.topbar-text{font-size:13px;color:var(--fg-muted);}
.topbar-link{font-size:13px;color:var(--accent);}
.topbar-link:hover{color:#DCF87C;}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(14,14,20,.92);
  border-bottom:1px solid transparent;
  transition:background var(--dur) var(--ease),border-color var(--dur) var(--ease),backdrop-filter var(--dur) var(--ease);
}
.site-header.is-scrolled{background:var(--ink-900);border-bottom-color:var(--line);backdrop-filter:blur(8px);}
.nav-inner{height:72px;display:flex;align-items:center;gap:28px;}
.logo{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:18px;letter-spacing:-.01em;}
.logo-mark{width:28px;height:28px;border-radius:8px;border:1px solid var(--accent);background:
  linear-gradient(135deg,rgba(198,242,78,.9) 0 42%,transparent 42% 100%);flex:0 0 auto;}
.logo-text{color:var(--fg);}
.logo:hover .logo-text{color:var(--accent);}
.nav-links{display:flex;align-items:center;gap:28px;margin-left:8px;}
.nav-link{position:relative;font-size:15px;color:var(--fg-mid);padding:6px 0;}
.nav-link::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--accent);transition:width var(--dur) var(--ease);}
.nav-link:hover{color:var(--fg);}
.nav-link:hover::after{width:100%;}
.nav-link.is-active{color:var(--fg);}
.nav-link.is-active::after{width:100%;}
.nav-actions{display:flex;align-items:center;gap:14px;margin-left:auto;}
.search-toggle{width:38px;height:38px;display:inline-flex;align-items:center;justify-content:center;background:transparent;border:1px solid var(--line);border-radius:999px;color:var(--fg-mid);cursor:pointer;transition:all var(--dur) var(--ease);}
.search-toggle:hover{color:var(--fg);border-color:var(--line-strong);}
.search-box{width:0;overflow:hidden;transition:width var(--dur) var(--ease);}
.search-box.is-open{width:220px;}
.search-box input{width:100%;height:38px;background:var(--ink-800);border:1px solid var(--line);border-radius:999px;padding:0 16px;color:var(--fg);outline:none;transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);}
.search-box input::placeholder{color:var(--fg-muted);}
.search-box input:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(198,242,78,.18);}
.link-login{font-size:15px;color:var(--fg-mid);padding:6px 4px;}
.link-login:hover{color:var(--fg);}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 24px;border-radius:999px;border:1px solid transparent;font-size:15px;font-weight:600;cursor:pointer;transition:transform var(--dur) var(--ease),background var(--dur) var(--ease),border-color var(--dur) var(--ease),color var(--dur) var(--ease),filter var(--dur) var(--ease);}
.btn-sm{height:38px;padding:0 18px;font-size:14px;}
.btn-primary{background:var(--accent);color:#101018;}
.btn-primary:hover{transform:translateY(-1px);filter:brightness(1.06);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--fg);}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-1px);}
.btn-dark{background:var(--paper-fg);color:#F6F5F1;}
.btn-dark:hover{transform:translateY(-1px);filter:brightness(1.15);}
.btn:disabled,.btn[disabled]{opacity:.6;cursor:not-allowed;transform:none;}
.burger{display:none;width:40px;height:40px;background:transparent;border:1px solid var(--line);border-radius:10px;flex-direction:column;justify-content:center;align-items:center;gap:4px;cursor:pointer;}
.burger span{display:block;width:16px;height:2px;background:var(--fg);border-radius:2px;transition:transform var(--dur) var(--ease),opacity var(--dur) var(--ease);}
.burger[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.burger[aria-expanded="true"] span:nth-child(2){opacity:0;}
.burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

/* ---------- 移动抽屉 ---------- */
.drawer{position:fixed;inset:0;z-index:80;background:var(--ink-900);padding:88px 24px 40px;transform:translateX(100%);opacity:0;visibility:hidden;transition:transform var(--dur) var(--ease),opacity var(--dur) var(--ease),visibility var(--dur) var(--ease);overflow-y:auto;}
.drawer.is-open{transform:translateX(0);opacity:1;visibility:visible;}
.drawer-link{display:block;font-size:18px;font-weight:600;padding:16px 0;border-bottom:1px solid var(--line);}
.drawer-link.is-active{color:var(--accent);}
.drawer-search{margin:20px 0 24px;}
.drawer-search input{width:100%;height:48px;background:var(--ink-800);border:1px solid var(--line);border-radius:var(--radius-input);padding:0 16px;color:var(--fg);outline:none;}
.drawer-search input:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(198,242,78,.18);}

/* ---------- 面包屑 ---------- */
.article-main{padding:36px 0 0;}
.crumb{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--fg-muted);flex-wrap:wrap;}
.crumb a{color:var(--fg-muted);}
.crumb a:hover{color:var(--accent);}
.crumb-sep{opacity:.5;}
.crumb-cur{max-width:280px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--fg-mid);}

/* ---------- 文章头 ---------- */
.article-head{padding:28px 0 0;max-width:900px;}
.chip{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:var(--radius-chip);font-size:13px;line-height:1;border:1px solid var(--line-strong);color:var(--fg-mid);}
.chip-accent{background:rgba(198,242,78,.12);border-color:rgba(198,242,78,.4);color:var(--accent);}
.chip-purple{background:rgba(122,92,255,.14);border-color:rgba(122,92,255,.45);color:#BBAEFF;}
.article-title{margin:18px 0 20px;font-size:clamp(28px,3.6vw,44px);line-height:1.18;}
.article-meta{display:flex;align-items:center;gap:12px;flex-wrap:wrap;font-size:13px;color:var(--fg-muted);font-variant-numeric:tabular-nums;}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--line-strong);}
.share{display:flex;align-items:center;gap:8px;margin-left:auto;}
.share button{width:34px;height:34px;display:inline-flex;align-items:center;justify-content:center;background:var(--ink-800);border:1px solid var(--line);border-radius:999px;color:var(--fg-mid);cursor:pointer;transition:all var(--dur) var(--ease);}
.share button:hover{color:var(--accent);border-color:rgba(198,242,78,.45);transform:translateY(-1px);}

/* ---------- 封面 ---------- */
.article-cover{margin:32px 0 0;}
.article-cover img{width:100%;aspect-ratio:21/9;object-fit:cover;border-radius:var(--radius-img);border:1px solid var(--line);}
.article-cover figcaption{margin-top:12px;font-size:13px;color:var(--fg-muted);}
.cover-divider{margin-top:20px;border:0;border-top:1px solid var(--line);}

/* ---------- 布局 ---------- */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:56px;padding:48px 0 72px;align-items:start;}
.article-body{max-width:820px;font-size:16px;line-height:1.9;color:var(--fg-mid);}
.article-body h2{position:relative;margin:44px 0 16px;padding-left:16px;font-size:26px;line-height:1.32;color:var(--fg);}
.article-body h2::before{content:"";position:absolute;left:0;top:5px;bottom:5px;width:4px;border-radius:2px;background:var(--accent);}
.article-body h3{margin:32px 0 12px;font-size:20px;font-weight:600;color:var(--fg);}
.article-body h4{margin:24px 0 10px;font-size:17px;font-weight:600;color:var(--fg);}
.article-body p{margin:0 0 18px;}
.article-body strong{color:var(--fg);font-weight:600;}
.article-body a{color:var(--accent);border-bottom:1px solid rgba(198,242,78,.35);}
.article-body a:hover{color:#DCF87C;}
.article-body ul,.article-body ol{margin:0 0 18px;padding-left:22px;list-style:revert;}
.article-body li{margin:0 0 10px;}
.article-body li::marker{color:var(--accent);}
.article-body blockquote{margin:24px 0;padding:16px 20px;background:var(--ink-800);border-left:4px solid var(--accent-2);border-radius:0 12px 12px 0;color:var(--fg-mid);}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{width:100%;height:auto;border-radius:var(--radius-img);margin:24px 0;}
.article-body figure{margin:24px 0;}
.article-body figcaption{margin-top:10px;text-align:center;font-size:13px;color:var(--fg-muted);}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:14px;}
.article-body th,.article-body td{border:1px solid var(--line);padding:12px 14px;text-align:left;vertical-align:top;}
.article-body thead th{background:var(--ink-700);color:var(--fg);font-weight:600;}
.article-body pre{margin:24px 0;padding:16px;background:var(--ink-800);border:1px solid var(--line);border-radius:12px;overflow:auto;font-size:13px;line-height:1.7;}
.article-body code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.92em;color:var(--accent);}
.article-body pre code{color:var(--fg-mid);}
.article-body hr{margin:32px 0;border:0;border-top:1px solid var(--line);}

/* ---------- 空态 / 图片降级 ---------- */
.empty-state{margin:8px 0 0;padding:44px 28px;background:var(--ink-800);border:1px solid var(--line);border-radius:var(--radius-card);text-align:left;}
.empty-icon{width:44px;height:44px;border-radius:12px;border:1px solid var(--line-strong);display:flex;align-items:center;justify-content:center;color:var(--fg-muted);margin-bottom:16px;}
.empty-title{font-size:19px;font-weight:600;color:var(--fg);margin-bottom:8px;}
.empty-desc{font-size:14px;color:var(--fg-muted);margin-bottom:20px;max-width:520px;}
.img-ph{display:flex;align-items:center;justify-content:center;min-height:180px;background:var(--ink-700);border:1px solid var(--line);border-radius:var(--radius-img);color:var(--fg-muted);font-size:13px;}

/* ---------- 侧栏 ---------- */
.article-aside{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px;}
.panel{background:var(--ink-800);border:1px solid var(--line);border-radius:var(--radius-card);padding:20px;transition:border-color var(--dur) var(--ease);}
.panel:hover{border-color:rgba(198,242,78,.28);}
.panel-title{font-size:15px;font-weight:600;color:var(--fg);margin-bottom:14px;font-family:var(--font-cn);letter-spacing:0;}
.toc-list{display:flex;flex-direction:column;gap:2px;}
.toc-link{display:block;font-size:13.5px;color:var(--fg-muted);padding:7px 10px;border-left:2px solid var(--line);line-height:1.5;}
.toc-link:hover{color:var(--accent);border-left-color:var(--accent);background:rgba(198,242,78,.05);}
.tag-cloud{display:flex;flex-wrap:wrap;gap:8px;}
.tag{display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:var(--radius-chip);font-size:13px;background:var(--ink-700);border:1px solid var(--line);color:var(--fg-mid);}
.tag:hover{color:var(--accent);border-color:rgba(198,242,78,.4);}
.rec-card{display:flex;gap:12px;padding:10px;border-radius:12px;border:1px solid transparent;transition:all var(--dur) var(--ease);}
.rec-card + .rec-card{margin-top:8px;}
.rec-card:hover{border-color:var(--line);background:var(--ink-700);transform:translateY(-2px);}
.rec-card img{width:64px;height:64px;flex:0 0 64px;object-fit:cover;border-radius:10px;}
.rec-title{display:block;font-size:14px;font-weight:600;color:var(--fg);line-height:1.5;}
.rec-meta{display:block;margin-top:6px;font-size:12px;color:var(--fg-muted);}

/* ---------- 文末 ---------- */
.article-foot{margin-top:48px;padding-top:28px;border-top:1px solid var(--line);}
.tag-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:24px;}
.tag-row .label{font-size:13px;color:var(--fg-muted);margin-right:4px;}
.foot-nav{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;padding:18px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.foot-nav a{font-size:14px;color:var(--fg-mid);}
.foot-nav a:hover{color:var(--accent);}

/* ---------- 推荐卡 ---------- */
.related{padding:0 0 72px;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:26px;flex-wrap:wrap;}
.eyebrow{display:block;font-size:12px;letter-spacing:.14em;color:var(--fg-muted);text-transform:uppercase;margin-bottom:10px;}
.section-title{font-size:28px;line-height:1.25;}
.section-more{font-size:14px;color:var(--fg-mid);}
.section-more:hover{color:var(--accent);}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.card{display:flex;flex-direction:column;background:var(--ink-700);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease);}
.card:hover{transform:translateY(-2px);border-color:rgba(198,242,78,.45);}
.card-media{position:relative;padding:14px 14px 0;}
.card-media img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--radius-img);transition:transform var(--dur) var(--ease);}
.card:hover .card-media img{transform:scale(1.03);}
.card-chip{position:absolute;left:24px;top:24px;}
.card-body{padding:16px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-title{font-size:17px;font-weight:600;color:var(--fg);line-height:1.5;font-family:var(--font-cn);letter-spacing:0;}
.card-text{font-size:14px;line-height:1.7;color:var(--fg-muted);}
.card-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--fg-muted);font-variant-numeric:tabular-nums;}
.card-meta .arrow{transition:transform var(--dur) var(--ease);}
.card:hover .card-meta .arrow{transform:translateX(4px);color:var(--accent);}

/* ---------- 反白 CTA ---------- */
.cta-band{background:var(--paper);color:var(--paper-fg);padding:88px 0;}
.cta-inner{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:56px;align-items:start;}
.eyebrow-dark{color:rgba(20,20,26,.55);}
.cta-band .section-title{color:var(--paper-fg);}
.cta-points{margin-top:24px;display:flex;flex-direction:column;gap:14px;}
.cta-points li{position:relative;padding-left:16px;font-size:15px;line-height:1.8;color:rgba(20,20,26,.78);}
.cta-points li::before{content:"";position:absolute;left:0;top:9px;bottom:9px;width:4px;border-radius:2px;background:var(--accent-2);}
.form-card{background:#fff;border:1px solid rgba(20,20,26,.1);border-radius:var(--radius-card);padding:28px;box-shadow:0 2px 12px rgba(20,20,26,.08);}
.field{margin-bottom:16px;}
.field label{display:block;font-size:13px;font-weight:600;color:rgba(20,20,26,.72);margin-bottom:8px;}
.field input,.field select,.field textarea{width:100%;height:48px;background:#F7F7F4;border:1px solid rgba(20,20,26,.14);border-radius:var(--radius-input);padding:0 14px;color:var(--paper-fg);outline:none;transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);}
.field textarea{height:110px;padding:12px 14px;resize:vertical;line-height:1.7;}
.field input::placeholder,.field textarea::placeholder{color:rgba(20,20,26,.38);}
.field input:focus,.field select:focus,.field textarea:focus{border-color:#7A5CFF;box-shadow:0 0 0 3px rgba(122,92,255,.16);}
.field-error input{border-color:var(--danger);}
.form-note{font-size:12.5px;color:rgba(20,20,26,.5);margin-top:12px;line-height:1.7;}
.form-success{margin-top:14px;display:flex;align-items:center;gap:8px;font-size:13.5px;color:#2C7A3E;background:rgba(198,242,78,.22);border:1px solid rgba(44,122,62,.28);border-radius:10px;padding:10px 14px;}

/* ---------- 页脚 ---------- */
.site-footer{border-top:1px solid var(--line);background:var(--ink-900);padding:64px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.8;color:var(--fg-muted);max-width:320px;}
.socials{display:flex;gap:10px;margin-top:18px;}
.socials span{width:32px;height:32px;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:999px;font-size:12px;color:var(--fg-muted);}
.footer-col h4{font-size:15px;font-weight:600;color:var(--fg);margin-bottom:16px;font-family:var(--font-cn);letter-spacing:0;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col li{font-size:14px;color:var(--fg-muted);}
.footer-col a{color:var(--fg-muted);}
.footer-col a:hover{color:var(--fg);}
.footer-bottom{margin-top:48px;padding-top:20px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:13px;color:var(--fg-muted);}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .nav-links{display:none;}
  .burger{display:inline-flex;}
}
@media (max-width:1023px){
  .article-layout{grid-template-columns:minmax(0,1fr);gap:40px;padding:40px 0 56px;}
  .article-aside{position:static;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .cta-inner{grid-template-columns:minmax(0,1fr);gap:32px;}
  .cta-band{padding:64px 0;}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px;}
}
@media (max-width:1023px){
  .search-box,.search-box.is-open{display:none;}
}
@media (max-width:767px){
  .nav-inner{height:60px;gap:16px;}
  .link-login,.nav-actions .btn-sm{display:none;}
  .article-main{padding-top:24px;}
  .article-title{margin:14px 0 16px;}
  .article-cover img{aspect-ratio:16/10;}
  .article-body{font-size:15px;line-height:1.85;}
  .article-body h2{font-size:22px;margin-top:34px;}
  .article-body h3{font-size:18px;}
  .card-grid{grid-template-columns:minmax(0,1fr);}
  .section-title{font-size:23px;}
  .cta-band{padding:56px 0;}
  .form-card{padding:20px;}
  .footer-grid{grid-template-columns:minmax(0,1fr);}
  .foot-nav{flex-direction:column;align-items:flex-start;}
  .article-meta{gap:10px;}
  .share{margin-left:0;}
  .empty-state{padding:32px 20px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition-duration:.001ms !important;animation-duration:.001ms !important;scroll-behavior:auto !important;}
}

/* roulang page: category2 */
:root{
  --ink-900:#0E0E14;
  --ink-800:#15151D;
  --ink-700:#1D1D28;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --fg:#F4F4F6;
  --fg-mid:#B9B9C4;
  --fg-muted:#8A8A98;
  --accent:#C6F24E;
  --accent-2:#7A5CFF;
  --danger:#FF5C5C;
  --paper:#F2F1EC;
  --paper-fg:#14141A;
  --radius-card:18px;
  --radius-img:14px;
  --radius-input:12px;
  --radius-chip:6px;
  --ease:240ms cubic-bezier(.2,.8,.2,1);
  --container:1200px;
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC",system-ui,-apple-system,"Microsoft YaHei",sans-serif;
  --font-en:"Space Grotesk","Inter","PingFang SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--fg);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.is-locked{overflow:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color var(--ease),border-color var(--ease),background var(--ease),opacity var(--ease)}
a:hover{color:var(--accent)}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.2;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;box-shadow:0 0 0 3px rgba(198,242,78,.18)}
::selection{background:rgba(198,242,78,.28)}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.num,.metric-value,.bar-value,.tl-step,.pillar-num,.seq{font-family:var(--font-en);font-variant-numeric:tabular-nums}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(14,14,20,.72);
  border-bottom:1px solid transparent;
  transition:background var(--ease),border-color var(--ease),backdrop-filter var(--ease);
}
.site-header.is-scrolled{
  background:var(--ink-900);
  border-bottom-color:var(--line);
  backdrop-filter:blur(6px);
}
.nav-inner{
  display:flex;align-items:center;gap:28px;
  height:72px;
}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{
  width:28px;height:28px;border-radius:7px;flex:0 0 auto;
  border:1.5px solid var(--accent);
  background:
    linear-gradient(135deg,var(--accent) 0 42%,transparent 42% 100%),
    var(--ink-800);
}
.logo-text{
  font-family:var(--font-en);
  font-size:18px;font-weight:700;letter-spacing:-.01em;color:var(--fg);
}
.nav-links{display:flex;align-items:center;gap:28px;margin-left:8px}
.nav-link{
  position:relative;font-size:15px;color:var(--fg-mid);padding:6px 0;
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--accent);transition:width var(--ease);
}
.nav-link:hover{color:var(--fg)}
.nav-link:hover::after{width:100%}
.nav-link.is-active{color:var(--fg)}
.nav-link.is-active::after{width:100%}
.nav-actions{display:flex;align-items:center;gap:14px;margin-left:auto}
.search-toggle{
  width:38px;height:38px;border-radius:999px;border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;color:var(--fg-mid);
  transition:border-color var(--ease),color var(--ease),background var(--ease);
}
.search-toggle:hover{border-color:rgba(198,242,78,.45);color:var(--accent)}
.search-box{width:0;overflow:hidden;transition:width var(--ease),opacity var(--ease);opacity:0}
.search-box.is-open{width:220px;opacity:1}
.search-box input{
  width:220px;height:38px;border-radius:var(--radius-input);
  background:var(--ink-800);border:1px solid var(--line);
  padding:0 14px;font-size:14px;color:var(--fg);
}
.search-box input::placeholder{color:var(--fg-muted)}
.search-box input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(198,242,78,.18)}
.link-login{font-size:15px;color:var(--fg-mid);padding:6px 2px}
.link-login:hover{color:var(--fg)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:600;padding:0 22px;height:46px;
  transition:transform var(--ease),background var(--ease),border-color var(--ease),color var(--ease),filter var(--ease);
  white-space:nowrap;
}
.btn-sm{height:38px;padding:0 18px;font-size:14px}
.btn-primary{background:var(--accent);color:#101014}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-1px);color:#101014}
.btn-ghost{border-color:var(--line-strong);color:var(--fg);background:transparent}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-1px)}
.btn-dark{background:#14141A;color:#F4F4F6}
.btn-dark:hover{background:#242430;color:#fff;transform:translateY(-1px)}
.btn:active{transform:translateY(1px)}
.btn[disabled]{opacity:.6;cursor:not-allowed;transform:none}
.burger{display:none;width:40px;height:40px;flex-direction:column;justify-content:center;gap:5px;align-items:center;border-radius:10px;border:1px solid var(--line)}
.burger span{display:block;width:18px;height:1.6px;background:var(--fg);transition:transform var(--ease),opacity var(--ease)}
.burger.is-open span:nth-child(1){transform:translateY(6.6px) rotate(45deg)}
.burger.is-open span:nth-child(2){opacity:0}
.burger.is-open span:nth-child(3){transform:translateY(-6.6px) rotate(-45deg)}

/* ---------- 页头 ---------- */
.page-head{padding:72px 0 40px;position:relative;border-bottom:1px solid var(--line)}
.page-head::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:64px 64px;
  opacity:.5;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.55),transparent 78%);
}
.page-head .container{position:relative;z-index:1}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--fg-muted);margin-bottom:26px}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb span.sep{color:var(--fg-muted);opacity:.6}
.eyebrow{
  display:inline-block;font-family:var(--font-en);font-size:12px;letter-spacing:.14em;
  color:var(--fg-muted);text-transform:uppercase;margin-bottom:16px;
}
.page-head h1{
  font-size:clamp(34px,5vw,60px);line-height:1.08;letter-spacing:-.02em;
  max-width:16em;
}
.page-head h1 em{font-style:normal;color:var(--accent)}
.lead{
  margin-top:22px;max-width:60ch;color:var(--fg-mid);font-size:17px;line-height:1.85;
}
.chip-nav{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.chip{
  display:inline-flex;align-items:center;gap:8px;
  height:38px;padding:0 16px;border-radius:var(--radius-chip);
  border:1px solid var(--line);background:var(--ink-800);
  font-size:14px;color:var(--fg-mid);
  transition:border-color var(--ease),color var(--ease),transform var(--ease),background var(--ease);
}
.chip:hover{border-color:rgba(198,242,78,.45);color:var(--fg);transform:translateY(-2px)}
.chip.is-current{background:var(--accent);border-color:var(--accent);color:#101014;font-weight:600}
.chip.is-current:hover{color:#101014}
.chip .dot{width:6px;height:6px;border-radius:50%;background:currentColor;opacity:.7}

/* ---------- 宽幅图 ---------- */
.wide-visual{padding:40px 0 0}
.wide-figure{
  margin:0;border-radius:var(--radius-img);overflow:hidden;
  border:1px solid var(--line);background:var(--ink-700);
  aspect-ratio:2.4 / 1;position:relative;
}
.wide-figure img{width:100%;height:100%;object-fit:cover}
.wide-caption{
  display:flex;flex-wrap:wrap;gap:10px 22px;justify-content:space-between;
  margin-top:14px;font-size:13px;color:var(--fg-muted);
}

/* ---------- 通用区块 ---------- */
.section{padding:96px 0;border-top:1px solid var(--line)}
.section-head{max-width:62ch;margin-bottom:48px}
.section-head .eyebrow{margin-bottom:14px}
.section-head h2{font-size:clamp(24px,3.2vw,32px);letter-spacing:-.02em}
.section-head p{margin-top:16px;color:var(--fg-mid);font-size:16px}

/* ---------- 三段式横向要点 ---------- */
.pillars{padding-top:88px}
.pillar-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:40px}
.pillar{border-top:1px solid var(--line-strong);padding-top:26px}
.pillar-icon{
  width:38px;height:38px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line-strong);color:var(--accent-2);margin-bottom:18px;
}
.pillar h3{font-size:19px;margin-bottom:12px}
.pillar p{color:var(--fg-mid);font-size:15px;line-height:1.8}
.pillar ul{margin-top:16px;display:grid;gap:9px}
.pillar li{position:relative;padding-left:16px;font-size:14px;color:var(--fg-muted)}
.pillar li::before{content:"";position:absolute;left:0;top:10px;width:6px;height:6px;border-radius:2px;background:var(--accent-2);opacity:.85}
.pillar:hover h3{color:var(--accent)}

/* ---------- 时间线 ---------- */
.timeline{position:relative;display:grid;gap:34px;padding-left:34px}
.timeline::before{
  content:"";position:absolute;left:7px;top:8px;bottom:8px;width:1px;background:var(--line-strong);
}
.tl-item{position:relative}
.tl-dot{
  position:absolute;left:-34px;top:8px;width:15px;height:15px;border-radius:50%;
  border:1px solid var(--line-strong);background:var(--ink-900);
}
.tl-item.is-current .tl-dot{background:var(--accent-2);border-color:var(--accent-2);box-shadow:0 0 0 4px rgba(122,92,255,.18)}
.tl-item h3{font-size:19px;margin-bottom:10px}
.tl-step{
  display:inline-block;font-size:12px;letter-spacing:.14em;color:var(--accent-2);
  margin-bottom:8px;
}
.tl-item p{color:var(--fg-mid);font-size:15px;max-width:70ch}
.tl-tag{
  display:inline-block;margin-top:14px;font-size:13px;color:var(--fg-muted);
  border:1px solid var(--line);border-radius:var(--radius-chip);padding:4px 10px;
}
.tl-item.is-current .tl-tag{border-color:rgba(122,92,255,.5);color:#C6BFFF}

/* ---------- 反白区段 ---------- */
.paper{
  background:var(--paper);color:var(--paper-fg);border-top:1px solid var(--line);
}
.paper .eyebrow{color:#6E6E78}
.paper .section-head h2{color:var(--paper-fg)}
.paper .section-head p{color:#4A4A54}
.paper a:hover{color:#3B2AB8}

/* 参数对照条 */
.bars{display:grid;gap:26px}
.bar-row{display:grid;gap:10px}
.bar-meta{display:flex;align-items:baseline;justify-content:space-between;gap:16px}
.bar-label{font-size:15px;font-weight:600;color:var(--paper-fg)}
.bar-hint{font-size:13px;color:#6E6E78;font-weight:400;margin-left:8px}
.bar-value{font-size:16px;font-weight:700;color:#3B2AB8}
.bar-track{height:10px;border-radius:999px;background:rgba(20,20,26,.1);overflow:hidden}
.bar-fill{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,#14141A,#3B2AB8)}
.bar-note{margin-top:24px;font-size:13px;color:#6E6E78}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,8fr);gap:56px}
.faq-aside h2{font-size:clamp(24px,3.2vw,32px);margin-bottom:16px}
.faq-aside p{color:var(--fg-mid);font-size:15px;margin-bottom:22px}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:20px;
  min-height:64px;padding:18px 0;font-size:17px;font-weight:600;color:var(--fg);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary .plus{
  position:relative;width:16px;height:16px;flex:0 0 auto;
  transition:transform var(--ease);
}
.faq-item summary .plus::before,
.faq-item summary .plus::after{
  content:"";position:absolute;background:var(--accent);border-radius:2px;
}
.faq-item summary .plus::before{left:0;top:7px;width:16px;height:2px}
.faq-item summary .plus::after{left:7px;top:0;width:2px;height:16px;transition:opacity var(--ease)}
.faq-item[open] summary .plus{transform:rotate(90deg)}
.faq-item[open] summary .plus::after{opacity:0}
.faq-item summary:hover{color:var(--accent)}
.faq-answer{padding:0 44px 22px 0;font-size:15px;line-height:1.8;color:var(--fg-mid)}

/* ---------- CTA ---------- */
.cta-panel{
  display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:48px;align-items:center;
}
.cta-panel h2{font-size:clamp(24px,3.4vw,36px);letter-spacing:-.02em;color:var(--paper-fg)}
.cta-panel p{margin-top:16px;color:#4A4A54;font-size:16px;max-width:52ch}
.cta-list{margin-top:22px;display:grid;gap:12px}
.cta-list li{position:relative;padding-left:16px;font-size:15px;color:#2A2A32}
.cta-list li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:6px;background:#3B2AB8;border-radius:2px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end}
.cta-card{
  background:#FBFAF6;border:1px solid rgba(20,20,26,.12);border-radius:var(--radius-card);
  padding:28px;box-shadow:0 2px 12px rgba(20,20,26,.08);
}
.cta-card h3{font-size:18px;margin-bottom:12px;color:var(--paper-fg)}
.cta-card p{color:#4A4A54;font-size:14px;line-height:1.75}
.cta-card .cta-actions{justify-content:flex-start;margin-top:22px}
.cta-card .btn-ghost{border-color:rgba(20,20,26,.24);color:#14141A}
.cta-card .btn-ghost:hover{border-color:#3B2AB8;color:#3B2AB8}

/* ---------- 页脚 ---------- */
.site-footer{border-top:1px solid var(--line);background:var(--ink-900);padding:64px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,2.4fr) minmax(0,3fr) minmax(0,2.6fr);gap:40px}
.footer-brand p{margin-top:16px;color:var(--fg-muted);font-size:14px;line-height:1.8;max-width:34ch}
.socials{display:flex;gap:10px;margin-top:18px}
.socials span{
  width:32px;height:32px;border-radius:9px;border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;font-size:12px;color:var(--fg-muted);
  font-family:var(--font-en);
}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--fg)}
.footer-col ul{display:grid;gap:10px}
.footer-col li{font-size:14px;color:var(--fg-muted)}
.footer-col a{font-size:14px;color:var(--fg-muted)}
.footer-col a:hover{color:var(--fg)}
.footer-bottom{
  margin-top:48px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
  font-size:13px;color:var(--fg-muted);
}

/* ---------- 滚动入场 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 520ms var(--ease),transform 520ms var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{width:92%;max-width:100%;padding:0 20px}
  .nav-links{gap:22px}
}
@media (max-width:1024px){
  .nav-inner{height:60px;gap:16px}
  .nav-links{
    position:fixed;left:0;right:0;top:60px;bottom:0;
    background:var(--ink-900);border-top:1px solid var(--line);
    flex-direction:column;align-items:flex-start;gap:6px;
    padding:24px 20px;margin:0;
    transform:translateY(-10px);opacity:0;visibility:hidden;
    transition:opacity var(--ease),transform var(--ease),visibility var(--ease);
    overflow-y:auto;
  }
  .nav-links.is-open{opacity:1;visibility:visible;transform:none}
  .nav-link{font-size:18px;padding:14px 0;width:100%;border-bottom:1px solid var(--line)}
  .nav-link::after{display:none}
  .nav-link.is-active{color:var(--accent)}
  .burger{display:flex}
  .link-login{display:none}
  .search-box{display:none}
  .section{padding:72px 0}
  .page-head{padding:56px 0 32px}
  .faq-layout{grid-template-columns:1fr;gap:32px}
  .cta-panel{grid-template-columns:1fr;gap:32px}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:32px}
}
@media (max-width:767px){
  body{font-size:15px}
  .section{padding:56px 0}
  .page-head{padding:44px 0 26px}
  .page-head h1{font-size:clamp(28px,8vw,38px)}
  .lead{font-size:15px}
  .pillar-grid{grid-template-columns:1fr;gap:28px}
  .timeline{padding-left:28px}
  .tl-dot{left:-28px}
  .footer-grid{grid-template-columns:1fr}
  .cta-actions{justify-content:flex-start}
  .btn{width:100%;padding:0 18px}
  .nav-actions .btn-sm{display:none}
  .footer-bottom{flex-direction:column}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .wide-figure{aspect-ratio:16 / 10}
  .faq-item summary{font-size:16px}
  .faq-answer{padding-right:0}
}
@media (prefers-reduced-motion:reduce){
  *{transition-duration:.01ms !important;animation-duration:.01ms !important}
  html{scroll-behavior:auto}
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}