/* roulang page: index */
:root{
  --bg:#0A0C0F;
  --panel:#131820;
  --panel-2:#1A2028;
  --panel-3:#101419;
  --line:rgba(255,255,255,.08);
  --text:#E7EDF2;
  --muted:#8B95A3;
  --brand:#14E0B1;
  --brand-ink:#062018;
  --accent:#FF6A2B;
  --violet:#8B7BFF;
  --paper:#F6F7F5;
  --paper-ink:#1B1F24;
  --r-card:14px;
  --r-img:12px;
  --r-pill:999px;
  --r-badge:6px;
  --r-input:10px;
  --shadow:0 18px 40px -24px rgba(0,0,0,.8);
  --inset:inset 0 1px 0 rgba(255,255,255,.06);
  --gap:24px;
  --dur:160ms;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",Arial,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img)}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
input,button,textarea{font-size:inherit;color:inherit}
::selection{background:rgba(20,224,177,.28);color:#fff}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
.num{font-variant-numeric:tabular-nums;font-weight:600}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:#0A0C0F;
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:26px;height:74px}
.logo{display:flex;align-items:center;gap:11px;flex-shrink:0}
.logo-mark{
  width:36px;height:36px;border-radius:10px;background:var(--brand);
  color:var(--brand-ink);font-weight:800;font-size:17px;letter-spacing:.02em;
  display:grid;place-items:center;
}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-name{font-size:16.5px;font-weight:800;letter-spacing:.01em}
.logo-sub{font-size:10.5px;color:var(--muted);letter-spacing:.22em;font-weight:600}
.nav{display:flex;align-items:center;gap:2px;flex:1}
.nav-item{position:relative}
.nav-link{
  display:inline-block;padding:9px 14px;border-radius:var(--r-pill);
  font-size:14.5px;font-weight:600;color:var(--muted);
  transition:color var(--dur),background var(--dur);
}
.nav-link:hover{color:var(--text);background:var(--panel)}
.nav-link.active{color:var(--text)}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:1px;height:2px;
  background:var(--brand);border-radius:2px;
}
.nav-link .caret{font-size:10px;margin-left:5px;opacity:.7;display:inline-block;transition:transform var(--dur)}
.has-mega:hover .nav-link .caret,
.has-mega:focus-within .nav-link .caret{transform:rotate(180deg);color:var(--brand)}
.header-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
.search-field{
  display:flex;align-items:center;gap:8px;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-pill);
  padding:5px 5px 5px 15px;
  transition:border-color var(--dur),background var(--dur);
}
.search-field:focus-within{border-color:var(--brand);background:var(--panel-2)}
.search-field input{
  width:148px;background:none;border:0;outline:none;
  font-size:13.5px;color:var(--text);padding:6px 0;
}
.search-field input::placeholder{color:#6B7480}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-pill);border:1px solid transparent;
  padding:12px 24px;font-size:15px;font-weight:700;cursor:pointer;
  transition:transform var(--dur),filter var(--dur),border-color var(--dur),color var(--dur),background var(--dur);
  white-space:nowrap;
}
.btn-sm{padding:8px 16px;font-size:13.5px}
.btn-primary{background:var(--brand);color:var(--brand-ink)}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0);filter:brightness(.96)}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.18);color:var(--text)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px)}
.btn-outline-accent{background:transparent;border-color:rgba(255,106,43,.55);color:#FFB394}
.btn-outline-accent:hover{border-color:var(--accent);color:var(--accent)}
.btn[disabled],.btn.is-disabled{opacity:.4;pointer-events:none}
.btn.is-on{background:rgba(20,224,177,.14);border-color:var(--brand);color:var(--brand)}

/* Mega 面板 */
.mega{
  position:absolute;left:0;right:0;top:100%;
  background:var(--panel-3);border-top:1px solid var(--brand);
  border-bottom:1px solid var(--line);
  padding:30px 0 26px;
  opacity:0;visibility:hidden;transform:translateY(-6px);
  transition:opacity 180ms ease,transform 180ms ease,visibility 180ms;
  box-shadow:var(--shadow);
}
.has-mega:hover .mega,.has-mega:focus-within .mega{opacity:1;visibility:visible;transform:none}
.mega-grid{display:grid;grid-template-columns:1.1fr 1.1fr 1fr;gap:36px}
.mega-col h4{
  font-size:12px;letter-spacing:.18em;color:var(--muted);
  font-weight:700;margin-bottom:14px;
}
.mega-list{display:grid;gap:9px}
.mega-list a{
  font-size:14px;color:#C6CFD9;display:flex;align-items:center;justify-content:space-between;
  padding:7px 10px;border-radius:8px;transition:background var(--dur),color var(--dur);
}
.mega-list a:hover{background:var(--panel-2);color:var(--brand)}
.mega-list .idx{font-size:11.5px;color:#5F6874}
.mega-card{
  background:var(--panel-2);border:1px solid var(--line);border-radius:var(--r-card);
  padding:16px 18px;
}
.mega-card strong{display:block;font-size:15px;margin-bottom:6px}
.mega-card p{font-size:13px;color:var(--muted);line-height:1.7}
.mega-card .link-more{margin-top:12px}

/* 移动端 */
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;
  background:var(--panel);border:1px solid var(--line);cursor:pointer;
  align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:17px;height:2px;background:var(--text);border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:17px;height:2px;background:var(--text);border-radius:2px;
}
.nav-toggle span::before{top:-5px}
.nav-toggle span::after{top:5px}
.drawer{
  display:none;position:fixed;inset:74px 0 0 0;background:rgba(10,12,15,.98);
  z-index:70;padding:22px 20px 40px;overflow-y:auto;
  opacity:0;transform:translateY(-8px);transition:opacity 180ms,transform 180ms;
}
.drawer.open{opacity:1;transform:none}
.drawer a{display:block;padding:13px 4px;font-size:16px;font-weight:600;border-bottom:1px solid var(--line)}
.drawer details{border-bottom:1px solid var(--line)}
.drawer summary{
  cursor:pointer;list-style:none;padding:13px 4px;font-size:16px;font-weight:600;
  display:flex;align-items:center;justify-content:space-between;
}
.drawer summary::-webkit-details-marker{display:none}
.drawer summary .chev{transition:transform 180ms;color:var(--muted);font-size:12px}
.drawer details[open] summary .chev{transform:rotate(180deg);color:var(--brand)}
.drawer .sub a{font-size:14.5px;font-weight:500;color:#B7C1CC;padding-left:16px;border-bottom:1px dashed rgba(255,255,255,.06)}
.drawer-search{display:flex;gap:10px;margin:20px 0 8px}
.drawer-search input{
  flex:1;background:var(--panel);border:1px solid var(--line);border-radius:var(--r-input);
  padding:11px 14px;outline:none;font-size:14px;
}
.drawer-search input:focus{border-color:var(--brand)}

/* ---------- Hero ---------- */
.hero{padding:60px 0 48px;position:relative;overflow:hidden}
.hero::after{
  content:"";position:absolute;inset:auto 0 0 0;height:1px;background:var(--line);
}
.hero-grid{display:grid;grid-template-columns:6fr 5fr;gap:48px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  border:1px solid rgba(20,224,177,.4);border-radius:var(--r-pill);
  padding:5px 14px;font-size:12.5px;font-weight:600;color:var(--brand);
  letter-spacing:.06em;margin-bottom:20px;
}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--brand)}
h1{
  font-size:clamp(30px,4.2vw,54px);line-height:1.18;font-weight:800;letter-spacing:-.01em;
  margin-bottom:18px;
}
h1 .hl{color:var(--brand)}
.hero-sub{
  font-size:16px;line-height:1.85;color:#B4BEC9;max-width:560px;margin-bottom:26px;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px}
.hero-visual{
  position:relative;border-radius:var(--r-card);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow);
  aspect-ratio:16/12;background:var(--panel);
}
.hero-visual img{width:100%;height:100%;object-fit:cover;border-radius:0;opacity:.92}
.hero-visual::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(10,12,15,.10) 0%,rgba(10,12,15,.72) 100%);
}
.hero-tag{
  position:absolute;z-index:2;left:16px;top:16px;
  background:rgba(10,12,15,.82);border:1px solid rgba(20,224,177,.45);
  color:var(--brand);font-size:12px;font-weight:700;letter-spacing:.08em;
  padding:5px 12px;border-radius:var(--r-badge);
}
.hero-code{
  position:absolute;z-index:2;right:16px;bottom:14px;
  font-size:13px;font-weight:700;letter-spacing:.12em;color:#DCE6EE;
  font-variant-numeric:tabular-nums;
}
.corner{position:absolute;width:14px;height:14px;border:1px solid rgba(255,255,255,.28);z-index:3}
.corner.tl{left:10px;top:10px;border-right:0;border-bottom:0}
.corner.br{right:10px;bottom:10px;border-left:0;border-top:0}

/* ---------- 状态条 ---------- */
.status-strip{border-bottom:1px solid var(--line);background:#0C1014}
.status-inner{
  display:grid;grid-template-columns:repeat(4,1fr);
  gap:var(--gap);padding:26px 0;
}
.stat{display:flex;flex-direction:column;gap:2px;padding-left:14px;border-left:1px solid var(--line)}
.stat:first-child{border-left:0;padding-left:0}
.stat .k{font-size:12.5px;color:var(--muted);letter-spacing:.08em}
.stat .v{font-size:26px;font-weight:800;color:var(--text);line-height:1.3}
.stat .v small{font-size:13px;color:var(--brand);font-weight:700;margin-left:4px}

/* ---------- 板块通用 ---------- */
.section{padding:64px 0}
.section.tight{padding:48px 0}
.sec-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:20px;
  margin-bottom:28px;
}
.sec-head .lead{max-width:660px}
.sec-title{
  position:relative;padding-left:15px;
  font-size:clamp(22px,2.4vw,32px);font-weight:800;letter-spacing:-.01em;line-height:1.3;
}
.sec-title::before{
  content:"";position:absolute;left:0;top:8px;bottom:8px;width:3px;
  background:var(--brand);border-radius:2px;
}
.sec-desc{font-size:14.5px;color:var(--muted);margin-top:8px;line-height:1.75}
.link-more{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:700;color:var(--brand);white-space:nowrap;
}
.link-more .ar{display:inline-block;transition:transform var(--dur)}
.link-more:hover .ar{transform:translateX(3px)}

/* ---------- 目录 ---------- */
.toc-list{display:grid;gap:12px}
.toc-item{
  display:grid;grid-template-columns:52px 1fr 24px;align-items:center;gap:18px;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);
  padding:18px 22px;box-shadow:var(--inset);
  transition:background var(--dur),border-color var(--dur),transform var(--dur);
}
.toc-item:hover{background:var(--panel-2);border-color:rgba(20,224,177,.3);transform:translateY(-1px)}
.toc-num{
  font-size:15px;font-weight:800;color:#5F6874;letter-spacing:.06em;
  font-variant-numeric:tabular-nums;transition:color var(--dur);
}
.toc-item:hover .toc-num,.toc-item.on .toc-num{color:var(--brand)}
.toc-body h3{font-size:17px;font-weight:700;margin-bottom:3px}
.toc-body p{font-size:13.5px;color:var(--muted);line-height:1.7}
.toc-arrow{color:#5F6874;font-size:16px;text-align:right;transition:color var(--dur),transform var(--dur)}
.toc-item:hover .toc-arrow{color:var(--brand);transform:translateX(3px)}

/* ---------- 条目卡片 ---------- */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap)}
.post-card{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--inset);
  display:flex;flex-direction:column;
  transition:transform var(--dur),border-color var(--dur),box-shadow var(--dur);
}
.post-card:hover{transform:translateY(-2px);border-color:rgba(20,224,177,.3);box-shadow:var(--shadow)}
.post-thumb{position:relative;display:block;aspect-ratio:16/9;overflow:hidden;background:var(--panel-2)}
.post-thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform 300ms ease}
.post-card:hover .post-thumb img{transform:scale(1.03)}
.badge{
  display:inline-block;padding:3px 9px;border-radius:var(--r-badge);
  font-size:11.5px;font-weight:700;letter-spacing:.04em;
  background:rgba(20,224,177,.12);color:var(--brand);border:1px solid rgba(20,224,177,.35);
}
.post-thumb .badge{position:absolute;left:12px;top:12px;background:rgba(10,12,15,.85)}
.badge.accent{background:rgba(255,106,43,.14);color:var(--accent);border-color:rgba(255,106,43,.4)}
.badge.violet{background:rgba(139,123,255,.14);color:var(--violet);border-color:rgba(139,123,255,.4)}
.post-body{padding:16px 18px 18px;display:flex;flex-direction:column;flex:1}
.post-title{font-size:16.5px;font-weight:700;line-height:1.55;margin-bottom:8px}
.post-title a{
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color var(--dur);
}
.post-title a:hover{color:var(--brand)}
.post-excerpt{
  font-size:14px;line-height:1.7;color:var(--muted);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  margin-bottom:14px;
}
.post-meta{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  font-size:12.5px;color:#6B7480;padding-top:12px;border-top:1px solid var(--line);
  font-variant-numeric:tabular-nums;
}
.post-meta .go{color:var(--brand);font-weight:700;transition:transform var(--dur)}
.post-card:hover .post-meta .go{transform:translateX(3px)}
.empty-state{
  border:1px dashed rgba(255,255,255,.18);border-radius:var(--r-card);
  padding:48px 24px;text-align:center;background:rgba(19,24,32,.6);
}
.empty-state p{font-size:15px;color:var(--muted);margin-bottom:18px}

/* ---------- 横滑推荐 ---------- */
.rail{
  display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding-bottom:10px;scrollbar-width:thin;
}
.rail::-webkit-scrollbar{height:6px}
.rail::-webkit-scrollbar-thumb{background:rgba(255,255,255,.14);border-radius:99px}
.rail-card{
  flex:0 0 316px;scroll-snap-align:start;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--inset);
  transition:transform var(--dur),border-color var(--dur);
}
.rail-card:hover{transform:translateY(-2px);border-color:rgba(20,224,177,.3)}
.rail-card img{aspect-ratio:16/9;width:100%;object-fit:cover;border-radius:0}
.rail-body{padding:14px 16px 18px}
.rail-body h3{font-size:15.5px;font-weight:700;line-height:1.55;margin-bottom:6px}
.rail-body p{font-size:13px;color:var(--muted);line-height:1.7}
.rail-tag{
  display:inline-block;font-size:11.5px;font-weight:700;color:var(--accent);
  border:1px solid rgba(255,106,43,.4);border-radius:var(--r-badge);
  padding:2px 8px;margin-bottom:8px;
}

/* ---------- CTA 条带 ---------- */
.cta-band{
  background:var(--panel);border:1px solid var(--line);border-left:3px solid var(--brand);
  border-radius:var(--r-card);padding:30px 32px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:22px;
  box-shadow:var(--inset);
}
.cta-band h2{font-size:22px;font-weight:800;margin-bottom:6px}
.cta-band p{font-size:14px;color:var(--muted);line-height:1.75;max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:4fr 6fr;gap:44px;align-items:start}
.faq-intro p{font-size:14.5px;color:var(--muted);line-height:1.8;margin-top:12px}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:18px 34px 18px 0;position:relative;
  font-size:15.5px;font-weight:700;line-height:1.6;transition:color var(--dur);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--brand)}
.faq-item summary::after{
  content:"+";position:absolute;right:4px;top:15px;
  font-size:20px;font-weight:400;color:var(--brand);line-height:1;
  transition:transform 180ms ease;transform-origin:center;
}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item .ans{padding:0 34px 20px 0;font-size:15px;line-height:1.8;color:#B4BEC9}

/* ---------- 页脚 ---------- */
.site-footer{border-top:1px solid var(--line);background:#08090C;padding:52px 0 0;margin-top:20px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px;padding-bottom:38px}
.footer-brand .logo{margin-bottom:14px}
.footer-brand p{font-size:13.5px;color:var(--muted);line-height:1.85;max-width:340px}
.footer-col h4{font-size:12px;letter-spacing:.18em;color:#5F6874;font-weight:700;margin-bottom:14px}
.footer-col ul{display:grid;gap:10px}
.footer-col a{font-size:14px;color:#B4BEC9;transition:color var(--dur)}
.footer-col a:hover{color:var(--brand)}
.footer-col p{font-size:13.5px;color:var(--muted);line-height:1.8}
.footer-bottom{
  border-top:1px solid var(--line);padding:18px 0 22px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  font-size:12.5px;color:#6B7480;
}
.to-top{display:inline-flex;align-items:center;gap:6px;color:#8B95A3;transition:color var(--dur)}
.to-top:hover{color:var(--brand)}

/* ---------- 响应式 ---------- */
@media (max-width:1280px){
  .container{max-width:1100px}
  .search-field input{width:120px}
}
@media (max-width:1024px){
  .header-inner{gap:16px}
  .nav{display:none}
  .nav-toggle{display:flex}
  .drawer{display:block}
  .header-actions .search-field{display:none}
  .hero{padding:44px 0 40px}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero-visual{aspect-ratio:16/9}
  .post-grid{grid-template-columns:repeat(2,1fr)}
  .faq-grid{grid-template-columns:1fr;gap:26px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .mega{display:none}
  .status-inner{grid-template-columns:repeat(2,1fr);row-gap:20px}
  .stat:nth-child(3){border-left:0;padding-left:0}
}
@media (max-width:768px){
  body{font-size:15.5px}
  .section{padding:46px 0}
  .section.tight{padding:36px 0}
  .sec-head{flex-direction:column;align-items:flex-start;gap:12px}
  .toc-item{grid-template-columns:42px 1fr 18px;gap:14px;padding:16px}
  .rail-card{flex:0 0 82%}
  .cta-band{padding:24px 20px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  h1{font-size:29px}
  .sec-title{font-size:21px}
  .post-grid{grid-template-columns:1fr}
  .hero-cta .btn{width:100%}
  .status-inner{grid-template-columns:1fr;row-gap:16px}
  .stat{border-left:0;padding-left:0;border-top:1px solid var(--line);padding-top:12px}
  .stat:first-child{border-top:0;padding-top:0}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .drawer-search{flex-direction:column}
}

/* 纸感区块（浅色提示位） */
.paper-note{
  background:var(--paper);color:var(--paper-ink);
  border-radius:var(--r-card);padding:24px 26px;
  box-shadow:0 10px 30px -18px rgba(0,0,0,.5);
}
.paper-note h3{font-size:18px;font-weight:800;margin-bottom:8px}
.paper-note p{font-size:14.5px;line-height:1.8;color:#3D444C}

/* roulang page: article */
:root{
  --brand:#14E0B1;
  --brand-dim:rgba(20,224,177,.14);
  --pulse:#FF6A2B;
  --violet:#8B7BFF;
  --bg:#0A0C0F;
  --panel:#131820;
  --panel-2:#1A2028;
  --panel-3:#101419;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.18);
  --text:#E7EDF2;
  --muted:#8B95A3;
  --paper:#F6F7F5;
  --paper-2:#EDEFEB;
  --ink:#1B1F24;
  --ink-soft:#4C555F;
  --r-card:14px;
  --r-img:12px;
  --r-btn:999px;
  --r-badge:6px;
  --r-input:10px;
  --shadow-card:0 18px 40px -24px rgba(0,0,0,.8);
  --shadow-paper:0 10px 30px -18px rgba(0,0,0,.5);
  --header-h:72px;
  --gap:24px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img)}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit}
input{font-family:inherit}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
::selection{background:var(--brand);color:#062018}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
.num{font-variant-numeric:tabular-nums;font-weight:600;letter-spacing:.02em}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}

/* ---------- 头部 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(10,12,15,.92);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:28px;
  height:var(--header-h);
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
}
.logo-mark{
  width:34px;height:34px;
  display:grid;place-items:center;
  border-radius:10px;
  background:linear-gradient(150deg,var(--brand),#0DA98A);
  color:#062018;
  font-weight:800;
  font-size:18px;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.35);
}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-name{font-size:16px;font-weight:800;letter-spacing:.01em}
.logo-sub{font-size:11px;color:var(--muted);letter-spacing:.14em}

.nav{
  display:flex;
  align-items:center;
  gap:6px;
  flex:1 1 auto;
}
.nav-item{position:relative}
.nav-link{
  display:inline-flex;
  align-items:center;
  gap:5px;
  padding:10px 14px;
  font-size:15px;
  color:var(--muted);
  border-radius:8px;
  transition:color .18s ease,background .18s ease;
  position:relative;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:2px;
  height:2px;
  border-radius:2px;
  background:var(--brand);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .18s ease;
}
.nav-link:hover{color:var(--text);background:var(--panel-2)}
.nav-link:hover::after,.nav-link.active::after{transform:scaleX(1)}
.nav-link.active{color:var(--text);font-weight:600}
.caret{font-size:10px;color:var(--muted);transition:transform .18s ease}
.nav-item.has-mega:hover .caret,.nav-item.has-mega:focus-within .caret{transform:rotate(180deg)}

.mega{
  position:fixed;
  left:0;right:0;
  top:var(--header-h);
  background:var(--panel-3);
  border-top:1px solid var(--brand);
  border-bottom:1px solid var(--line);
  box-shadow:0 24px 48px -30px rgba(0,0,0,.95);
  opacity:0;
  visibility:hidden;
  transform:translateY(-8px);
  transition:opacity .18s ease,transform .18s ease,visibility .18s;
  padding:26px 0 30px;
}
.nav-item.has-mega:hover .mega,
.nav-item.has-mega:focus-within .mega{
  opacity:1;visibility:visible;transform:translateY(0);
}
.mega-grid{
  display:grid;
  grid-template-columns:1.1fr 1.1fr 1fr;
  gap:32px;
}
.mega-col h4{
  font-size:12px;
  letter-spacing:.18em;
  color:var(--muted);
  font-weight:600;
  margin-bottom:14px;
}
.mega-list{display:flex;flex-direction:column;gap:2px}
.mega-list a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:9px 10px;
  border-radius:8px;
  font-size:14.5px;
  color:var(--text);
  transition:background .16s ease,color .16s ease;
}
.mega-list a:hover{background:var(--panel-2);color:var(--brand)}
.mega-list .idx{font-size:12px;color:var(--muted)}
.mega-card{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:18px;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
}
.mega-card strong{display:block;font-size:15px;margin-bottom:8px}
.mega-card p{font-size:13.5px;color:var(--muted);line-height:1.75;margin-bottom:14px}
.link-more{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13.5px;color:var(--brand);font-weight:600;
}
.link-more .ar{transition:transform .16s ease}
.link-more:hover .ar{transform:translateX(3px)}

.header-tools{
  display:flex;
  align-items:center;
  gap:12px;
  flex:0 0 auto;
}
.search-box{
  display:flex;
  align-items:center;
  gap:8px;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  padding:7px 14px;
  transition:border-color .18s ease,background .18s ease;
}
.search-box:focus-within{border-color:var(--brand);background:var(--panel-2)}
.search-box input{
  border:0;background:transparent;color:var(--text);
  font-size:13.5px;width:140px;outline:none;
}
.search-box input::placeholder{color:#6C7684}
.search-box button{color:var(--brand);font-size:13px;font-weight:600;white-space:nowrap}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 24px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  border:1px solid transparent;
  transition:transform .12s ease,filter .12s ease,border-color .18s ease,background .18s ease,color .18s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#062018}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0);filter:brightness(.98)}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--text)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{padding:9px 18px;font-size:13.5px}
.btn[disabled],.btn.is-disabled{opacity:.4;pointer-events:none}

.nav-toggle{
  display:none;
  width:42px;height:42px;
  border:1px solid var(--line);
  border-radius:10px;
  align-items:center;justify-content:center;
  flex-direction:column;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;transition:.18s}

/* ---------- 面包屑 ---------- */
.crumbs{
  display:flex;
  align-items:center;
  gap:8px;
  flex-wrap:nowrap;
  overflow:hidden;
  font-size:13px;
  color:var(--muted);
  padding:26px 0 0;
}
.crumbs a{color:var(--muted);transition:color .16s ease;white-space:nowrap}
.crumbs a:hover{color:var(--brand)}
.crumbs .sep{color:#495260;flex:0 0 auto}
.crumbs .current{
  color:#B9C2CE;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
  max-width:52%;
}

/* ---------- 文章头部 ---------- */
.article-hero{
  position:relative;
  padding:34px 0 44px;
  background:
    linear-gradient(180deg,rgba(10,12,15,.72),var(--bg) 88%),
    url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
  border-bottom:1px solid var(--line);
}
.article-hero .inner{max-width:920px}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:12px;
  letter-spacing:.16em;
  color:var(--brand);
  text-transform:uppercase;
  margin-bottom:16px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--brand)}
h1.article-title{
  font-size:clamp(30px,4.2vw,54px);
  font-weight:800;
  line-height:1.18;
  letter-spacing:-.01em;
  margin-bottom:22px;
}
.meta-row{
  display:flex;
  align-items:center;
  gap:14px;
  flex-wrap:wrap;
  font-size:13px;
  color:var(--muted);
}
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 10px;
  border-radius:var(--r-badge);
  border:1px solid rgba(20,224,177,.35);
  background:var(--brand-dim);
  color:var(--brand);
  font-size:12.5px;
  font-weight:600;
}
.badge.is-pulse{
  border-color:rgba(255,106,43,.4);
  background:rgba(255,106,43,.12);
  color:var(--pulse);
}
.dot-sep{width:4px;height:4px;border-radius:50%;background:#3C4553}
.share-group{display:flex;align-items:center;gap:8px;margin-left:auto}
.share-btn{
  display:inline-flex;align-items:center;gap:6px;
  padding:7px 14px;
  border:1px solid var(--line-strong);
  border-radius:var(--r-btn);
  font-size:12.5px;
  color:#C3CBD6;
  transition:border-color .16s ease,color .16s ease,background .16s ease;
}
.share-btn:hover{border-color:var(--brand);color:var(--brand)}
.share-btn.is-active{background:var(--brand-dim);border-color:var(--brand);color:var(--brand)}
.share-btn.is-active::after{content:"✓";font-size:11px}

/* ---------- 双栏 ---------- */
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,760px) 320px;
  gap:36px;
  align-items:start;
  padding:44px 0 8px;
}
.paper{
  background:var(--paper);
  color:var(--ink);
  border-radius:var(--r-card);
  padding:40px 44px;
  box-shadow:var(--shadow-paper);
}
.paper-inner{max-width:100%}
.article-body{
  font-size:16px;
  line-height:1.9;
  color:var(--ink);
}
.article-body > * + *{margin-top:18px}
.article-body h2{
  font-size:26px;
  font-weight:800;
  line-height:1.35;
  margin-top:40px;
  padding-left:14px;
  position:relative;
  color:#12161A;
}
.article-body h2::before{
  content:"";
  position:absolute;
  left:0;top:6px;bottom:6px;
  width:4px;
  border-radius:2px;
  background:var(--brand);
}
.article-body h3{
  font-size:20px;
  font-weight:700;
  margin-top:30px;
  color:#12161A;
}
.article-body p{color:#262C33}
.article-body a{color:#0B8F73;border-bottom:1px solid rgba(11,143,115,.3);transition:border-color .16s}
.article-body a:hover{border-color:#0B8F73}
.article-body strong{color:#12161A;font-weight:700}
.article-body ul,.article-body ol{padding-left:22px;list-style:revert}
.article-body li{margin:8px 0;color:#262C33}
.article-body img{border-radius:var(--r-img);margin:22px 0;box-shadow:0 8px 22px -16px rgba(0,0,0,.4)}
.article-body blockquote{
  border-left:3px solid var(--brand);
  background:var(--paper-2);
  padding:16px 20px;
  border-radius:0 10px 10px 0;
  color:#33404B;
  font-size:15.5px;
}
.article-body table{width:100%;border-collapse:collapse;font-size:14.5px;margin:20px 0}
.article-body th,.article-body td{border-bottom:1px solid #D8DCD6;padding:10px 12px;text-align:left}
.article-body th{background:var(--paper-2);font-weight:700;color:#12161A}
.article-body figcaption{font-size:13px;color:var(--ink-soft);margin-top:8px}
.article-body hr{border:0;border-top:1px solid #D8DCD6;margin:28px 0}

.article-empty{
  text-align:center;
  padding:56px 24px;
}
.article-empty h2{font-size:22px;font-weight:800;color:#12161A;margin-bottom:12px}
.article-empty p{font-size:15px;color:var(--ink-soft);margin-bottom:22px}
.article-empty .btn-primary{color:#062018}

.tag-row{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:40px;
  padding-top:26px;
  border-top:1px solid #DCE0DA;
}
.tag{
  display:inline-flex;
  align-items:center;
  padding:6px 14px;
  border-radius:var(--r-btn);
  border:1px solid #D2D7D0;
  background:#fff;
  font-size:13px;
  color:#41505C;
  transition:border-color .16s ease,color .16s ease;
}
.tag:hover{border-color:#0B8F73;color:#0B8F73}

/* ---------- 侧栏 ---------- */
.side{position:sticky;top:calc(var(--header-h) + 20px);display:flex;flex-direction:column;gap:20px}
.side-card{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:20px 20px 22px;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--shadow-card);
}
.side-card h3{
  font-size:13px;
  letter-spacing:.16em;
  color:var(--muted);
  font-weight:600;
  margin-bottom:14px;
}
.toc{display:flex;flex-direction:column;gap:2px;max-height:320px;overflow:auto}
.toc a{
  display:block;
  padding:8px 10px;
  font-size:13.5px;
  color:#B4BEC9;
  border-left:2px solid transparent;
  border-radius:0 6px 6px 0;
  line-height:1.6;
  transition:color .16s ease,background .16s ease,border-color .16s ease;
}
.toc a:hover{background:var(--panel-2);color:var(--brand)}
.toc a.is-current{color:var(--brand);border-left-color:var(--brand);background:var(--panel-2)}
.toc a.lvl-3{padding-left:22px;font-size:13px;color:#93A0AD}
.toc-empty{font-size:13.5px;color:var(--muted);line-height:1.8}

.mini-list{display:flex;flex-direction:column;gap:14px}
.mini-item{display:flex;gap:12px;align-items:flex-start}
.mini-item img{width:64px;height:48px;object-fit:cover;border-radius:8px;flex:0 0 auto}
.mini-item .mini-t{font-size:13.5px;line-height:1.6;color:#D2D9E1;transition:color .16s ease}
.mini-item:hover .mini-t{color:var(--brand)}
.mini-item .mini-m{font-size:11.5px;color:var(--muted);margin-top:4px}

.collect-card{
  border-left:3px solid var(--brand);
  background:var(--panel-2);
}
.collect-card p{font-size:13.5px;color:var(--muted);line-height:1.8;margin-bottom:16px}
.collect-card .btn{width:100%}

/* ---------- 相关推荐 ---------- */
.rel-section{padding:56px 0 20px}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:20px;
  margin-bottom:24px;
}
.section-head h2{
  font-size:28px;
  font-weight:800;
  letter-spacing:-.01em;
  position:relative;
  padding-left:16px;
}
.section-head h2::before{
  content:"";
  position:absolute;left:0;top:8px;bottom:8px;width:4px;border-radius:2px;background:var(--brand);
}
.rel-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:var(--gap);
}
.rel-card{
  display:flex;
  flex-direction:column;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--shadow-card);
  transition:transform .18s ease,border-color .18s ease;
}
.rel-card:hover{transform:translateY(-2px);border-color:rgba(20,224,177,.3)}
.rel-cover{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--panel-2)}
.rel-cover img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .35s ease}
.rel-card:hover .rel-cover img{transform:scale(1.04)}
.rel-cover .badge{position:absolute;left:12px;top:12px;backdrop-filter:blur(4px)}
.rel-body{padding:18px 18px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.rel-body h3{font-size:16.5px;font-weight:700;line-height:1.55}
.rel-body p{font-size:13.5px;color:var(--muted);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-foot{
  margin-top:auto;
  display:flex;align-items:center;justify-content:space-between;
  font-size:12px;color:#6C7684;
  padding-top:12px;border-top:1px solid var(--line);
}
.rel-foot .ar{color:var(--brand);transition:transform .16s ease}
.rel-card:hover .rel-foot .ar{transform:translateX(3px)}

/* ---------- 返回分类 ---------- */
.back-strip{
  margin:44px 0 64px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  flex-wrap:wrap;
  background:var(--panel);
  border:1px solid var(--line);
  border-left:4px solid var(--brand);
  border-radius:var(--r-card);
  padding:22px 26px;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
}
.back-strip .bs-t{font-size:16px;font-weight:700;margin-bottom:4px}
.back-strip .bs-s{font-size:13.5px;color:var(--muted)}
.back-strip .bs-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{
  border-top:1px solid var(--line);
  background:var(--panel-3);
  padding:56px 0 0;
  margin-top:20px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:36px;
}
.footer-brand p{font-size:13.5px;color:var(--muted);line-height:1.85;margin-top:16px;max-width:320px}
.footer-col h4{
  font-size:13px;letter-spacing:.14em;color:#B7C0CB;font-weight:600;margin-bottom:16px;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:13.5px;color:var(--muted);transition:color .16s ease}
.footer-col a:hover{color:var(--brand)}
.footer-col p{font-size:13px;color:var(--muted);line-height:1.8}
.footer-bottom{
  margin-top:44px;
  border-top:1px solid var(--line);
  padding:20px 0 28px;
  display:flex;
  align-items:center;
  gap:18px;
  flex-wrap:wrap;
  font-size:12.5px;
  color:#6C7684;
}
.footer-bottom .to-top{
  margin-left:auto;
  color:var(--brand);
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-weight:600;
}
.footer-bottom .to-top:hover{filter:brightness(1.1)}

/* ---------- 响应式 ---------- */
@media (max-width:1280px){
  .container{max-width:1120px}
  .article-layout{grid-template-columns:minmax(0,1fr) 300px;gap:28px}
  .paper{padding:34px 32px}
}
@media (max-width:1024px){
  .article-layout{grid-template-columns:minmax(0,1fr)}
  .side{position:static;flex-direction:row;flex-wrap:wrap;gap:16px}
  .side-card{flex:1 1 280px}
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .search-box input{width:110px}
}
@media (max-width:900px){
  .nav-toggle{display:inline-flex}
  .nav{
    position:fixed;
    left:0;right:0;
    top:var(--header-h);bottom:0;
    background:var(--bg);
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:12px 20px 40px;
    overflow-y:auto;
    transform:translateX(100%);
    transition:transform .18s ease;
    z-index:90;
  }
  .nav.is-open{transform:translateX(0)}
  .nav-item{border-bottom:1px solid var(--line)}
  .nav-link{padding:16px 4px;font-size:16px;color:var(--text);justify-content:space-between;border-radius:0}
  .nav-link::after{display:none}
  .nav-link.active{color:var(--brand)}
  .mega{
    position:static;
    opacity:1;visibility:visible;transform:none;
    display:none;
    background:transparent;
    border:0;
    box-shadow:none;
    padding:0 0 18px;
  }
  .nav-item.has-mega.is-open .mega{display:block}
  .mega-grid{grid-template-columns:1fr;gap:20px}
  .header-tools .search-box{display:none}
  .header-tools .btn-primary{display:none}
  .article-hero{padding:26px 0 34px}
  .paper{padding:26px 22px}
  .share-group{margin-left:0;width:100%}
  .crumbs .current{max-width:100%}
}
@media (max-width:768px){
  :root{--header-h:64px}
  .container{padding:0 18px}
  .article-layout{padding:30px 0 0}
  .paper{padding:24px 18px;border-radius:12px}
  .article-body{font-size:15.5px;line-height:1.85}
  .article-body h2{font-size:22px}
  .article-body h3{font-size:18px}
  .rel-grid{grid-template-columns:minmax(0,1fr)}
  .section-head h2{font-size:22px}
  .back-strip{padding:18px;margin:32px 0 48px}
  .back-strip .bs-actions{width:100%}
  .back-strip .bs-actions .btn{flex:1 1 auto}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px}
  .footer-bottom .to-top{margin-left:0}
}
@media (max-width:480px){
  h1.article-title{font-size:26px}
  .btn{padding:11px 18px;font-size:14px}
  .btn.w-full-xs{width:100%}
  .article-body h2{font-size:20px}
  .tag{font-size:12px;padding:5px 11px}
  .breadcrumbs{font-size:12px}
}

/* roulang page: category1 */
:root{
  --bg:#0A0C0F;
  --panel:#131820;
  --panel-2:#1A2028;
  --panel-3:#101419;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.18);
  --text:#E7EDF2;
  --muted:#8B95A3;
  --primary:#14E0B1;
  --primary-ink:#062018;
  --accent:#FF6A2B;
  --violet:#8B7BFF;
  --paper:#F6F7F5;
  --paper-ink:#1B1F24;
  --paper-muted:#525A63;
  --r-card:14px;
  --r-img:12px;
  --r-btn:999px;
  --r-badge:6px;
  --r-input:10px;
  --shadow-card:0 18px 40px -24px rgba(0,0,0,.8);
  --shadow-paper:0 10px 30px -18px rgba(0,0,0,.5);
  --inset:inset 0 1px 0 rgba(255,255,255,.06);
  --w:1200px;
  --gap:24px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px}
::selection{background:rgba(20,224,177,.28);color:#fff}

.container{width:100%;max-width:var(--w);margin:0 auto;padding:0 24px}
.section{padding:72px 0}
.section--tight{padding:56px 0}
.muted{color:var(--muted)}
.num{font-variant-numeric:tabular-nums;font-weight:600;letter-spacing:.02em}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;
  transition:background-color .12s ease,color .12s ease,border-color .12s ease,transform .12s ease,box-shadow .12s ease;
  border:1px solid transparent;white-space:nowrap;
}
.btn-primary{background:var(--primary);color:var(--primary-ink);box-shadow:var(--inset)}
.btn-primary:hover{background:#22e8bb;transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0);background:#10c79e}
.btn-ghost{background:transparent;color:var(--text);border-color:var(--line-strong)}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{padding:9px 18px;font-size:14px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.4;pointer-events:none}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--primary)}
.link-more .ar{transition:transform .12s ease;display:inline-block}
.link-more:hover .ar{transform:translateX(3px)}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 10px;border-radius:var(--r-badge);
  font-size:12px;font-weight:600;line-height:1.7;
  border:1px solid var(--line-strong);color:var(--muted);background:rgba(255,255,255,.03);
}
.badge--primary{border-color:rgba(20,224,177,.45);color:var(--primary);background:rgba(20,224,177,.08)}
.badge--accent{border-color:rgba(255,106,43,.45);color:var(--accent);background:rgba(255,106,43,.08)}
.tag{
  display:inline-block;padding:2px 9px;border-radius:5px;font-size:12px;
  color:var(--muted);background:rgba(255,255,255,.04);border:1px solid var(--line);
}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:#0A0C0F;
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex;align-items:center;gap:28px;
  height:72px;
}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:34px;height:34px;border-radius:9px;background:var(--primary);color:var(--primary-ink);
  display:inline-flex;align-items:center;justify-content:center;
  font-weight:800;font-size:18px;letter-spacing:-.02em;box-shadow:var(--inset);
}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-name{font-size:15px;font-weight:800;letter-spacing:.02em}
.logo-sub{font-size:11px;color:var(--muted);letter-spacing:.14em}

.nav{display:flex;align-items:center;gap:4px;flex:1}
.nav-item{position:static}
.nav-link{
  display:inline-flex;align-items:center;gap:6px;
  padding:10px 14px;border-radius:8px;
  font-size:15px;font-weight:600;color:var(--text);
  position:relative;transition:color .12s ease,background-color .12s ease;
}
.nav-link:hover{color:var(--primary);background:rgba(255,255,255,.04)}
.nav-link.active{color:var(--primary)}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;background:var(--primary);
}
.caret{font-size:10px;color:var(--muted);transition:transform .18s ease}
.nav-item.has-mega:hover .caret,
.nav-item.has-mega:focus-within .caret{transform:rotate(180deg);color:var(--primary)}

.mega{
  display:none;position:absolute;left:0;right:0;top:100%;
  background:var(--panel-3);
  border-top:1px solid var(--primary);
  box-shadow:var(--shadow-card);
}
.nav-item.has-mega:hover .mega,
.nav-item.has-mega:focus-within .mega{display:block}
.mega-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:32px;
  padding:28px 24px 32px;
}
.mega-col h4{
  font-size:12px;letter-spacing:.16em;color:var(--muted);font-weight:700;margin-bottom:12px;text-transform:uppercase;
}
.mega-list a{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:9px 0;border-bottom:1px dashed var(--line);
  font-size:14px;color:var(--text);transition:color .12s ease,padding-left .12s ease;
}
.mega-list a:hover{color:var(--primary);padding-left:4px}
.mega-list .idx{font-size:12px;color:var(--muted);font-variant-numeric:tabular-nums}
.mega-card{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);
  padding:18px;box-shadow:var(--inset);
}
.mega-card strong{display:block;font-size:15px;margin-bottom:6px}
.mega-card p{font-size:13px;color:var(--muted);line-height:1.75;margin-bottom:12px}

.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.search{
  display:flex;align-items:center;gap:8px;
  background:var(--panel);border:1px solid var(--line);
  border-radius:var(--r-input);padding:4px 4px 4px 12px;
  transition:border-color .12s ease;
}
.search:focus-within{border-color:var(--primary)}
.search input{
  width:140px;background:transparent;border:0;outline:none;
  font-size:14px;color:var(--text);padding:5px 0;
}
.search input::placeholder{color:#5F6874}
.search button{
  padding:6px 12px;border-radius:7px;background:rgba(255,255,255,.06);
  font-size:13px;font-weight:600;color:var(--text);transition:background-color .12s ease,color .12s ease;
}
.search button:hover{background:var(--primary);color:var(--primary-ink)}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:10px;border:1px solid var(--line-strong);
  font-size:13px;font-weight:600;color:var(--text);
}
.nav-toggle:hover{border-color:var(--primary);color:var(--primary)}

/* ============ Hero ============ */
.hero{
  position:relative;overflow:hidden;
  padding:64px 0 72px;
  border-bottom:1px solid var(--line);
  background:
    radial-gradient(720px 380px at 12% -20%, rgba(20,224,177,.09), transparent 70%),
    linear-gradient(180deg,#0C1015 0%,#0A0C0F 100%);
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.025) 1px,transparent 1px);
  background-size:100% 56px;opacity:.6;
}
.hero .container{position:relative;z-index:2}
.hero-grid{display:grid;grid-template-columns:1.15fr 1fr;gap:56px;align-items:center}
.crumb{
  display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:22px;
}
.crumb a{color:var(--muted);transition:color .12s ease}
.crumb a:hover{color:var(--primary)}
.crumb .sep{color:#3E4650}
.crumb .cur{color:var(--text);font-weight:600}
.hero-badge{
  display:inline-flex;align-items:center;gap:10px;
  padding:6px 14px;border-radius:var(--r-badge);
  border:1px solid rgba(20,224,177,.5);
  background:rgba(20,224,177,.08);
  color:var(--primary);font-size:13px;font-weight:700;letter-spacing:.06em;
  margin-bottom:22px;
}
.hero h1{
  font-size:clamp(30px,4.2vw,54px);
  line-height:1.18;font-weight:800;letter-spacing:-.01em;
  margin-bottom:20px;
}
.hero h1 em{font-style:normal;color:var(--primary)}
.hero-lead{
  font-size:16px;line-height:1.9;color:#B9C3CE;max-width:34em;margin-bottom:30px;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px}
.hero-stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:16px;
  border-top:1px solid var(--line);padding-top:24px;max-width:520px;
}
.hero-stats .n{font-size:22px;font-weight:800;color:var(--text);line-height:1.2}
.hero-stats .n span{font-size:12px;font-weight:600;color:var(--muted);margin-left:3px}
.hero-stats .l{font-size:12px;color:var(--muted);margin-top:4px}
.hero-media{position:relative}
.hero-media img{
  width:100%;border-radius:var(--r-card);border:1px solid var(--line-strong);
  box-shadow:var(--shadow-card);aspect-ratio:16/11;object-fit:cover;
  filter:saturate(1.02);
}
.hero-media .corner{
  position:absolute;width:14px;height:14px;border:1px solid rgba(20,224,177,.65);
}
.hero-media .c1{top:-8px;left:-8px;border-right:0;border-bottom:0}
.hero-media .c2{bottom:-8px;right:-8px;border-left:0;border-top:0}
.media-tag{
  position:absolute;top:14px;left:14px;
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 12px;border-radius:var(--r-badge);
  background:rgba(10,12,15,.86);border:1px solid rgba(20,224,177,.55);
  color:var(--primary);font-size:12px;font-weight:700;letter-spacing:.08em;
}
.media-code{
  position:absolute;bottom:14px;right:14px;
  padding:5px 11px;border-radius:6px;
  background:rgba(10,12,15,.86);border:1px solid var(--line-strong);
  font-size:12px;font-weight:600;color:#C6CFD9;letter-spacing:.12em;
  font-variant-numeric:tabular-nums;
}

/* ============ 板块标题 ============ */
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px}
.sec-title{
  position:relative;padding-left:16px;
  font-size:clamp(22px,2.6vw,32px);font-weight:800;line-height:1.3;letter-spacing:-.01em;
}
.sec-title::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:3px;background:var(--primary);
}
.sec-sub{font-size:14px;color:var(--muted);margin-top:8px;padding-left:16px}

/* ============ 目录 ============ */
.toc{display:flex;flex-direction:column;border-top:1px solid var(--line)}
.toc-row{
  display:grid;grid-template-columns:64px 1fr auto;align-items:center;gap:20px;
  padding:20px 18px;border-bottom:1px solid var(--line);
  transition:background-color .14s ease;
}
.toc-row:hover{background:var(--panel-2)}
.toc-row:hover .toc-idx{color:var(--primary)}
.toc-idx{
  font-size:15px;font-weight:700;color:#5F6874;font-variant-numeric:tabular-nums;
  transition:color .14s ease;letter-spacing:.05em;
}
.toc-body h3{font-size:18px;font-weight:700;margin-bottom:4px}
.toc-body p{font-size:14px;color:var(--muted);line-height:1.7}
.toc-row .ar{color:var(--muted);transition:transform .14s ease,color .14s ease}
.toc-row:hover .ar{color:var(--primary);transform:translateX(4px)}

/* ============ 双栏清单 ============ */
.two-col{display:grid;grid-template-columns:1.9fr 1fr;gap:var(--gap);align-items:start}
.entry-list{display:flex;flex-direction:column;gap:var(--gap)}
.entry-card{
  display:grid;grid-template-columns:230px 1fr;gap:22px;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);
  padding:16px;box-shadow:var(--inset);
  transition:transform .14s ease,border-color .14s ease,box-shadow .14s ease;
}
.entry-card:hover{transform:translateY(-2px);border-color:rgba(20,224,177,.35);box-shadow:var(--shadow-card)}
.thumb{
  position:relative;border-radius:var(--r-img);overflow:hidden;background:var(--panel-2);
  aspect-ratio:16/9;
}
.thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.entry-card:hover .thumb img{transform:scale(1.03)}
.thumb .code{
  position:absolute;left:10px;bottom:10px;
  padding:2px 8px;border-radius:5px;background:rgba(10,12,15,.86);
  border:1px solid var(--line-strong);font-size:11px;font-weight:600;color:#C6CFD9;
  font-variant-numeric:tabular-nums;letter-spacing:.1em;
}
.entry-body{display:flex;flex-direction:column;gap:10px;padding:4px 4px 4px 0}
.entry-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;font-size:12px;color:var(--muted)}
.entry-body h3{font-size:20px;font-weight:700;line-height:1.45}
.entry-body h3 a{transition:color .12s ease}
.entry-body h3 a:hover{color:var(--primary)}
.entry-body .desc{font-size:15px;line-height:1.75;color:#AFBAC6}
.entry-foot{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  margin-top:auto;padding-top:12px;border-top:1px dashed var(--line);
}
.entry-foot .time{font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums}

/* ============ 侧栏 ============ */
.side{display:flex;flex-direction:column;gap:var(--gap);position:sticky;top:96px}
.side-card{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--inset);
}
.side-card h3{font-size:16px;font-weight:800;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.side-card h3::before{content:"";width:3px;height:14px;border-radius:2px;background:var(--primary)}
.side-list li{
  display:flex;gap:12px;align-items:flex-start;
  padding:10px 0;border-bottom:1px dashed var(--line);font-size:14px;color:#B4BFCB;
}
.side-list li:last-child{border-bottom:0;padding-bottom:0}
.side-list .k{
  flex-shrink:0;min-width:64px;font-size:12px;font-weight:700;color:var(--primary);
  letter-spacing:.04em;padding-top:2px;
}
.side-note{font-size:14px;color:var(--muted);line-height:1.8}
.side-cover{border-radius:var(--r-img);overflow:hidden;margin-bottom:16px;border:1px solid var(--line)}
.side-cover img{width:100%;aspect-ratio:16/9;object-fit:cover}
.side-cta .btn{margin-top:14px}

/* ============ 纸感长文 ============ */
.paper{
  background:var(--paper);color:var(--paper-ink);
  border-radius:var(--r-card);padding:48px;box-shadow:var(--shadow-paper);
}
.paper-inner{max-width:760px}
.paper h2{
  position:relative;padding-left:16px;font-size:clamp(22px,2.4vw,30px);
  font-weight:800;line-height:1.35;color:#111417;margin-bottom:22px;
}
.paper h2::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:3px;background:var(--primary)}
.paper h3{font-size:19px;font-weight:800;color:#111417;margin:28px 0 10px}
.paper p{font-size:16px;line-height:1.9;color:#2C3339;margin-bottom:16px}
.paper .highlight{
  border-left:3px solid var(--primary);background:#ECF0EC;
  padding:14px 18px;border-radius:8px;font-size:15px;line-height:1.85;color:#2C3339;
}

/* ============ 流程 ============ */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--gap)}
.step{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;position:relative;box-shadow:var(--inset);
  transition:border-color .14s ease,transform .14s ease;
}
.step:hover{border-color:rgba(20,224,177,.35);transform:translateY(-2px)}
.step .sn{
  font-size:13px;font-weight:800;color:var(--primary);letter-spacing:.14em;
  font-variant-numeric:tabular-nums;margin-bottom:12px;display:block;
}
.step h3{font-size:17px;font-weight:700;margin-bottom:8px}
.step p{font-size:14px;line-height:1.75;color:var(--muted)}

/* ============ FAQ ============ */
.faq-grid{display:grid;grid-template-columns:2fr 3fr;gap:48px;align-items:start}
.faq-intro p{font-size:15px;color:var(--muted);line-height:1.85;margin-top:14px;max-width:28em}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 4px;cursor:pointer;list-style:none;
  font-size:16px;font-weight:700;transition:color .12s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--primary)}
.faq-item summary .plus{
  flex-shrink:0;width:22px;height:22px;border-radius:6px;
  border:1px solid var(--line-strong);display:inline-flex;align-items:center;justify-content:center;
  font-size:14px;color:var(--muted);transition:transform .18s ease,color .18s ease,border-color .18s ease;
}
.faq-item[open] summary{color:var(--primary)}
.faq-item[open] summary .plus{transform:rotate(45deg);color:var(--primary);border-color:rgba(20,224,177,.5)}
.faq-body{padding:0 4px 22px;font-size:15px;line-height:1.8;color:#AFBAC6;max-width:52em}

/* ============ CTA 条带 ============ */
.cta-band{
  position:relative;background:var(--panel);border:1px solid var(--line);
  border-radius:var(--r-card);padding:36px 40px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  box-shadow:var(--inset);overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--primary);
}
.cta-band h2{font-size:24px;font-weight:800;margin-bottom:8px}
.cta-band p{font-size:14px;color:var(--muted);max-width:44em}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}
.btn-fav.is-active{border-color:var(--accent);color:var(--accent)}
.btn-copy.is-active{background:var(--primary);color:var(--primary-ink);border-color:var(--primary)}

/* ============ 页脚 ============ */
.site-footer{
  border-top:1px solid var(--line);background:#080A0D;padding:60px 0 0;margin-top:0;
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:44px}
.footer-brand .logo{margin-bottom:16px}
.footer-brand p{font-size:14px;line-height:1.85;color:var(--muted);max-width:30em}
.footer-col h4{font-size:13px;font-weight:800;letter-spacing:.1em;color:var(--text);margin-bottom:14px}
.footer-col ul li{margin-bottom:10px}
.footer-col a{font-size:14px;color:var(--muted);transition:color .12s ease}
.footer-col a:hover{color:var(--primary)}
.footer-col p{font-size:14px;line-height:1.8;color:var(--muted)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:20px 0;border-top:1px solid var(--line);
  font-size:13px;color:#6E7681;
}
.footer-bottom .to-top{display:inline-flex;align-items:center;gap:6px;color:var(--muted);transition:color .12s ease}
.footer-bottom .to-top:hover{color:var(--primary)}

/* ============ 响应式 ============ */
@media (max-width:1280px){
  .container{max-width:1080px}
  .hero-grid{gap:40px}
}
@media (max-width:1024px){
  .section{padding:56px 0}
  .hero{padding:52px 0 60px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-lead{max-width:none}
  .hero-stats{max-width:none}
  .two-col{grid-template-columns:1fr}
  .side{position:static}
  .steps{grid-template-columns:repeat(2,1fr)}
  .faq-grid{grid-template-columns:1fr;gap:28px}
  .mega-grid{grid-template-columns:1fr 1fr;gap:24px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:960px){
  .header-inner{gap:16px;height:64px}
  .nav-toggle{display:inline-flex}
  .nav{
    display:none;position:absolute;left:0;right:0;top:100%;
    flex-direction:column;align-items:stretch;gap:2px;
    background:var(--panel);border-top:1px solid var(--line);
    padding:12px 24px 20px;max-height:calc(100vh - 64px);overflow-y:auto;
  }
  .site-header.nav-open .nav{display:flex}
  .nav-item{width:100%}
  .nav-link{width:100%;justify-content:space-between;padding:12px 8px}
  .nav-link.active::after{left:8px;right:auto;width:22px}
  .mega{display:block;position:static;background:transparent;border-top:0;box-shadow:none;margin-bottom:8px}
  .mega-grid{grid-template-columns:1fr;gap:18px;padding:6px 8px 12px}
  .mega-col h4{margin-bottom:8px}
  .search{display:none}
  .header-actions .btn{display:none}
  .cta-band{padding:28px}
  .paper{padding:32px}
}
@media (max-width:768px){
  .section{padding:40px 0}
  .container{padding:0 18px}
  .hero{padding:40px 0 48px}
  .hero-cta{gap:10px}
  .hero-cta .btn{flex:1 1 100%}
  .hero-stats{grid-template-columns:repeat(2,1fr);gap:14px}
  .toc-row{grid-template-columns:44px 1fr;gap:14px;padding:16px 12px}
  .toc-row .ar{display:none}
  .entry-card{grid-template-columns:1fr;padding:14px}
  .entry-body{padding:0}
  .steps{grid-template-columns:1fr}
  .sec-head{flex-direction:column;align-items:flex-start;gap:10px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .cta-band{flex-direction:column;align-items:flex-start;gap:20px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 100%}
  .paper{padding:24px}
}
@media (max-width:480px){
  .hero h1{font-size:28px}
  .sec-title{font-size:22px}
  .entry-body h3{font-size:18px}
  .cta-band h2{font-size:20px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .paper h2{font-size:21px}
  .paper p{font-size:15px}
}

/* roulang page: category2 */
:root{
  --bg:#0A0C0F;
  --panel:#131820;
  --panel-2:#1A2028;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --text:#E7EDF2;
  --muted:#8B95A3;
  --primary:#14E0B1;
  --primary-dim:#0E9E7E;
  --primary-ink:#062018;
  --accent:#FF6A2B;
  --violet:#8B7BFF;
  --paper:#F6F7F5;
  --paper-text:#1B1F24;
  --paper-muted:#5A6169;
  --r-card:14px;
  --r-img:12px;
  --r-btn:999px;
  --r-badge:6px;
  --r-input:10px;
  --shadow-soft:0 18px 40px -24px rgba(0,0,0,.8);
  --shadow-paper:0 10px 30px -18px rgba(0,0,0,.5);
  --inset:inset 0 1px 0 rgba(255,255,255,.06);
  --max:1200px;
  --gap:24px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",-apple-system,"Segoe UI",Arial,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img);}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
input{font-family:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.01em;line-height:1.25;}
p{margin:0;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px;}

.container{
  width:100%;
  max-width:var(--max);
  margin:0 auto;
  padding:0 24px;
}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:#0B0E12;
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:20px;
  min-height:70px;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
}
.logo-mark{
  width:36px;height:36px;
  border-radius:11px;
  background:var(--primary);
  color:var(--primary-ink);
  display:grid;place-items:center;
  font-weight:800;font-size:18px;
  box-shadow:var(--inset);
}
.logo-name{display:block;font-size:16px;font-weight:800;letter-spacing:.01em;line-height:1.2;}
.logo-sub{display:block;font-size:11px;color:var(--muted);letter-spacing:.18em;line-height:1.4;}

.nav{
  display:flex;
  align-items:center;
  gap:2px;
  margin-left:8px;
}
.nav-item{position:static;}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:10px 14px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  color:var(--muted);
  transition:color .16s ease,background .16s ease;
  white-space:nowrap;
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.045);}
.nav-link.active{color:var(--primary);}
.nav-link.active::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:3px;
  height:2px;
  border-radius:2px;
  background:var(--primary);
}
.caret{font-size:10px;opacity:.7;transition:transform .18s ease;}
.nav-item.has-mega:hover .caret,
.nav-item.has-mega:focus-within .caret{transform:rotate(180deg);}

.header-actions{
  display:flex;
  align-items:center;
  gap:12px;
  margin-left:auto;
}
.search{
  display:flex;
  align-items:center;
  gap:8px;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r-input);
  padding:6px 6px 6px 14px;
  transition:border-color .16s ease;
}
.search:focus-within{border-color:var(--primary);}
.search input{
  border:0;
  background:transparent;
  color:var(--text);
  font-size:14px;
  width:168px;
  padding:6px 0;
  outline:none;
}
.search input::placeholder{color:#6F7885;}
.search input[type="search"]::-webkit-search-decoration,
.search input[type="search"]::-webkit-search-cancel-button{-webkit-appearance:none;}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  border:1px solid transparent;
  border-radius:var(--r-btn);
  padding:12px 24px;
  font-size:15px;
  font-weight:700;
  cursor:pointer;
  transition:transform .12s ease,filter .12s ease,border-color .16s ease,color .16s ease,background .16s ease;
}
.btn-primary{background:var(--primary);color:var(--primary-ink);box-shadow:var(--inset);}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);filter:brightness(.98);}
.btn-ghost{
  background:transparent;
  color:var(--text);
  border-color:var(--line-strong);
}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);}
.btn-sm{padding:8px 16px;font-size:14px;}
.btn-block{width:100%;}
.btn .ar{transition:transform .16s ease;display:inline-block;}
.btn:hover .ar{transform:translateX(3px);}

.menu-toggle{
  display:none;
  width:44px;height:44px;
  border-radius:12px;
  border:1px solid var(--line-strong);
  background:transparent;
  color:var(--text);
  font-size:18px;
  cursor:pointer;
  align-items:center;
  justify-content:center;
}
.menu-toggle:hover{border-color:var(--primary);color:var(--primary);}

/* Mega 面板 */
.mega{
  position:absolute;
  left:0;right:0;top:100%;
  background:#101419;
  border-top:1px solid var(--primary);
  border-bottom:1px solid var(--line);
  box-shadow:var(--shadow-soft);
  visibility:hidden;
  opacity:0;
  transform:translateY(-6px);
  pointer-events:none;
  transition:opacity .18s ease,transform .18s ease,visibility .18s;
}
.nav-item.has-mega:hover .mega,
.nav-item.has-mega:focus-within .mega{
  visibility:visible;
  opacity:1;
  transform:translateY(0);
  pointer-events:auto;
}
.mega-grid{
  display:grid;
  grid-template-columns:1.1fr 1.1fr 1fr;
  gap:36px;
  padding:28px 24px 34px;
}
.mega-col h4{
  font-size:13px;
  letter-spacing:.14em;
  color:var(--muted);
  font-weight:600;
  margin-bottom:14px;
  text-transform:uppercase;
}
.mega-list{display:grid;gap:4px;}
.mega-list a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:9px 10px;
  border-radius:10px;
  font-size:14px;
  color:#C6CFD8;
  transition:background .16s ease,color .16s ease;
}
.mega-list a:hover{background:var(--panel-2);color:var(--primary);}
.mega-list .idx{
  font-size:12px;
  font-weight:600;
  font-variant-numeric:tabular-nums;
  color:var(--muted);
}
.mega-card{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:18px;
  box-shadow:var(--inset);
}
.mega-card strong{display:block;font-size:15px;margin-bottom:8px;}
.mega-card p{font-size:13.5px;color:var(--muted);line-height:1.7;margin-bottom:12px;}
.link-more{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:13.5px;
  font-weight:700;
  color:var(--primary);
}
.link-more:hover .ar{transform:translateX(3px);}

/* ============ Hero ============ */
.hero{
  position:relative;
  overflow:hidden;
  border-bottom:1px solid var(--line);
  padding:76px 0 64px;
}
.hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center;
  opacity:.16;
  filter:saturate(.85);
}
.hero::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(10,12,15,.72) 0%,rgba(10,12,15,.94) 62%,var(--bg) 100%);
}
.hero .container{position:relative;z-index:2;}
.hero-grid{
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:56px;
  align-items:center;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:7px 16px;
  border-radius:var(--r-badge);
  border:1px solid rgba(255,106,43,.45);
  background:rgba(255,106,43,.09);
  color:#FF9A6B;
  font-size:13px;
  font-weight:700;
  letter-spacing:.06em;
  margin-bottom:22px;
}
.eyebrow .dot{
  width:7px;height:7px;border-radius:50%;
  background:var(--accent);
  box-shadow:0 0 0 3px rgba(255,106,43,.18);
}
.hero h1{
  font-size:clamp(30px,4.2vw,52px);
  line-height:1.18;
  letter-spacing:-.015em;
  margin-bottom:20px;
}
.hero h1 em{
  font-style:normal;
  color:var(--accent);
}
.hero-lead{
  font-size:16.5px;
  line-height:1.9;
  color:#B9C3CE;
  max-width:640px;
  margin-bottom:28px;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-bottom:34px;
}
.hero-meta{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
}
.hero-meta li{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:12px;
  padding:12px 20px;
  box-shadow:var(--inset);
}
.hero-meta strong{
  display:block;
  font-size:22px;
  font-weight:800;
  font-variant-numeric:tabular-nums;
  color:var(--primary);
  line-height:1.3;
}
.hero-meta span{font-size:12.5px;color:var(--muted);}

.hero-figure{
  position:relative;
  margin:0;
}
.hero-figure img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-soft);
}
.fig-badge{
  position:absolute;
  top:14px;left:14px;
  background:var(--accent);
  color:#26100A;
  font-size:12.5px;
  font-weight:800;
  letter-spacing:.08em;
  padding:6px 12px;
  border-radius:var(--r-badge);
  font-variant-numeric:tabular-nums;
}
.hero-figure figcaption{
  position:absolute;
  left:14px;right:14px;bottom:14px;
  background:rgba(10,12,15,.82);
  border:1px solid var(--line);
  border-radius:10px;
  padding:9px 14px;
  font-size:12.5px;
  color:#C2CBD5;
  font-variant-numeric:tabular-nums;
}

/* ============ 通用板块 ============ */
.section{padding:72px 0;}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:34px;
}
.section-head h2{
  font-size:clamp(24px,2.6vw,32px);
  position:relative;
  padding-left:18px;
}
.section-head h2::before{
  content:"";
  position:absolute;
  left:0;top:6px;bottom:6px;
  width:4px;
  border-radius:2px;
  background:var(--accent);
}
.section-head p{
  font-size:14.5px;
  color:var(--muted);
  margin-top:10px;
  max-width:620px;
}

/* 按位置索引 */
.pos-bar{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:22px 24px;
  box-shadow:var(--inset);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:14px 20px;
}
.pos-bar .pos-label{
  font-size:13px;
  letter-spacing:.12em;
  color:var(--muted);
  font-weight:600;
}
.chip-row{display:flex;flex-wrap:wrap;gap:10px;}
.chip{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:8px 16px;
  border-radius:var(--r-btn);
  border:1px solid var(--line-strong);
  background:transparent;
  color:#C6CFD8;
  font-size:14px;
  font-weight:600;
  cursor:pointer;
  transition:border-color .16s ease,color .16s ease,background .16s ease;
}
.chip:hover{border-color:var(--accent);color:var(--accent);}
.chip.is-on{
  border-color:var(--accent);
  color:#FFB791;
  background:rgba(255,106,43,.1);
}
.chip .num{
  font-size:12px;
  font-variant-numeric:tabular-nums;
  color:var(--muted);
}
.chip.is-on .num{color:var(--accent);}

/* ============ 编号时间轴条目流 ============ */
.flow-list{
  display:flex;
  flex-direction:column;
}
.flow-item{
  display:grid;
  grid-template-columns:64px 1fr;
  gap:26px;
  position:relative;
  padding-bottom:28px;
}
.flow-item:last-child{padding-bottom:0;}
.flow-item:last-child::before{display:none;}
.flow-item::before{
  content:"";
  position:absolute;
  left:31px;
  top:56px;
  bottom:6px;
  width:2px;
  background:linear-gradient(180deg,rgba(20,224,177,.5),rgba(20,224,177,.04));
}
.flow-num{
  position:relative;
  padding-top:2px;
}
.flow-num span{
  display:block;
  font-size:13px;
  font-weight:700;
  letter-spacing:.14em;
  color:var(--accent);
  font-variant-numeric:tabular-nums;
  margin-bottom:8px;
}
.flow-num b{
  display:block;
  font-size:30px;
  font-weight:800;
  line-height:1;
  color:var(--primary);
  font-variant-numeric:tabular-nums;
  letter-spacing:-.02em;
}
.flow-num::after{
  content:"";
  position:absolute;
  left:45px;
  top:44px;
  width:8px;height:8px;
  border-radius:50%;
  background:var(--bg);
  border:2px solid var(--primary);
}
.flow-item.is-new .flow-num::after{
  background:var(--accent);
  border-color:var(--accent);
  box-shadow:0 0 0 4px rgba(255,106,43,.16);
}
.flow-body{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:24px 26px;
  box-shadow:var(--inset);
  transition:border-color .18s ease,transform .18s ease,background .18s ease;
}
.flow-body:hover{
  border-color:rgba(20,224,177,.35);
  background:var(--panel-2);
  transform:translateY(-2px);
}
.flow-top{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  margin-bottom:12px;
}
.tag{
  display:inline-flex;
  align-items:center;
  padding:4px 10px;
  border-radius:var(--r-badge);
  border:1px solid var(--line-strong);
  font-size:12.5px;
  font-weight:700;
  color:#C0C9D3;
  letter-spacing:.02em;
}
.tag-accent{border-color:rgba(255,106,43,.5);color:#FFA47A;background:rgba(255,106,43,.09);}
.tag-main{border-color:rgba(20,224,177,.42);color:var(--primary);background:rgba(20,224,177,.08);}
.flow-time{
  margin-left:auto;
  font-size:12.5px;
  color:var(--muted);
  font-variant-numeric:tabular-nums;
}
.flow-body h3{
  font-size:21px;
  line-height:1.45;
  margin-bottom:10px;
}
.flow-body h3 a{transition:color .16s ease;}
.flow-body h3 a:hover{color:var(--primary);}
.flow-body p{
  font-size:15px;
  line-height:1.75;
  color:#AEB9C5;
  margin-bottom:16px;
  max-width:760px;
}
.flow-foot{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding-top:14px;
  border-top:1px solid var(--line);
}
.flow-foot .meta{
  font-size:12.5px;
  color:var(--muted);
  font-variant-numeric:tabular-nums;
}
.text-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:700;
  color:var(--primary);
}
.text-link .ar{transition:transform .16s ease;}
.text-link:hover .ar{transform:translateX(3px);}

/* ============ 纸感长文说明 ============ */
.paper-wrap{
  padding:0 0 72px;
}
.paper{
  background:var(--paper);
  color:var(--paper-text);
  border-radius:var(--r-card);
  padding:44px 48px;
  box-shadow:var(--shadow-paper);
  max-width:920px;
  margin:0 auto;
}
.paper h2{
  font-size:clamp(22px,2.4vw,29px);
  color:#12161A;
  margin-bottom:20px;
  padding-bottom:16px;
  border-bottom:1px solid rgba(27,31,36,.14);
}
.paper h3{
  font-size:19px;
  color:#12161A;
  margin:28px 0 10px;
}
.paper p{
  font-size:16px;
  line-height:1.9;
  color:#2E343B;
  margin-bottom:16px;
  max-width:760px;
}
.paper ul{
  display:grid;
  gap:10px;
  margin:6px 0 18px;
  max-width:760px;
}
.paper ul li{
  position:relative;
  padding-left:20px;
  font-size:15.5px;
  line-height:1.8;
  color:#2E343B;
}
.paper ul li::before{
  content:"";
  position:absolute;
  left:2px;top:12px;
  width:7px;height:7px;
  border-radius:2px;
  background:#0E9E7E;
}
.paper .paper-note{
  background:#EBF6F1;
  border-left:3px solid #0E9E7E;
  border-radius:8px;
  padding:16px 20px;
  font-size:14.5px;
  line-height:1.8;
  color:#2A5045;
  max-width:760px;
}
.paper-meta{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:26px;
  padding-top:18px;
  border-top:1px solid rgba(27,31,36,.14);
}
.paper-meta span{
  font-size:12.5px;
  color:#4C545C;
  background:#EBEEEC;
  border-radius:var(--r-badge);
  padding:5px 11px;
  font-variant-numeric:tabular-nums;
}

/* ============ FAQ ============ */
.faq-grid{
  display:grid;
  grid-template-columns:2fr 3fr;
  gap:48px;
  align-items:start;
}
.faq-intro h2{
  font-size:clamp(24px,2.6vw,32px);
  margin-bottom:14px;
}
.faq-intro p{
  font-size:14.5px;
  color:var(--muted);
  line-height:1.85;
  max-width:320px;
}
.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:18px;
  padding:20px 4px;
  font-size:16.5px;
  font-weight:700;
  color:var(--text);
  transition:color .16s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--primary);}
.faq-item summary .plus{
  flex:0 0 auto;
  width:24px;height:24px;
  display:grid;place-items:center;
  border-radius:50%;
  border:1px solid var(--line-strong);
  color:var(--primary);
  font-size:15px;
  line-height:1;
  transition:transform .18s ease,border-color .18s ease;
}
.faq-item[open] summary .plus{transform:rotate(45deg);border-color:var(--primary);}
.faq-answer{
  padding:0 4px 22px;
  font-size:15px;
  line-height:1.8;
  color:#AEB9C5;
  max-width:640px;
}

/* ============ CTA 条带 ============ */
.cta-band{
  padding:0 0 80px;
}
.cta-inner{
  background:var(--panel);
  border:1px solid var(--line);
  border-left:4px solid var(--primary);
  border-radius:var(--r-card);
  padding:34px 38px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:26px;
  box-shadow:var(--inset);
}
.cta-inner h2{
  font-size:23px;
  margin-bottom:8px;
}
.cta-inner p{
  font-size:14.5px;
  color:var(--muted);
  line-height:1.8;
  max-width:520px;
}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}
.cta-actions .btn.is-active{
  border-color:var(--primary);
  color:var(--primary);
  background:rgba(20,224,177,.1);
}
.cta-actions .btn-primary.is-active{
  background:var(--primary);
  color:var(--primary-ink);
}

/* ============ 页脚 ============ */
.site-footer{
  background:#0C0F13;
  border-top:1px solid var(--line);
  padding-top:56px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:40px;
}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand p{
  font-size:14px;
  line-height:1.85;
  color:var(--muted);
  max-width:300px;
}
.footer-col h4{
  font-size:13px;
  letter-spacing:.14em;
  color:#79838F;
  font-weight:700;
  margin-bottom:16px;
}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{
  font-size:14px;
  color:#A7B1BC;
  transition:color .16s ease;
}
.footer-col a:hover{color:var(--primary);}
.footer-col p{
  font-size:13.5px;
  line-height:1.8;
  color:var(--muted);
}
.footer-bottom{
  margin-top:40px;
  border-top:1px solid var(--line);
  padding:20px 0 28px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  font-size:13px;
  color:#7C8794;
}
.to-top{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:#A7B1BC;
  font-size:13px;
  transition:color .16s ease;
}
.to-top:hover{color:var(--primary);}

/* ============ 响应式 ============ */
@media (max-width:1280px){
  .container{padding:0 20px;}
  .hero-grid{gap:40px;}
}

@media (max-width:1024px){
  .header-inner{flex-wrap:wrap;min-height:66px;}
  .menu-toggle{display:inline-flex;}
  .nav{
    display:none;
    width:100%;
    flex-direction:column;
    align-items:stretch;
    gap:2px;
    margin:0 0 16px;
    padding:8px;
    background:var(--panel);
    border:1px solid var(--line);
    border-radius:var(--r-card);
  }
  .nav.open{display:flex;}
  .nav-link{
    padding:13px 14px;
    border-radius:10px;
    font-size:15.5px;
    justify-content:space-between;
  }
  .nav-link.active::after{display:none;}
  .nav-link.active{background:rgba(20,224,177,.1);}
  .mega{display:none !important;}
  .header-actions{margin-left:auto;}
  .search input{width:130px;}

  .hero{padding:52px 0 48px;}
  .hero-grid{grid-template-columns:1fr;gap:34px;}
  .hero-figure img{aspect-ratio:16/9;}
  .hero-lead{max-width:none;}

  .faq-grid{grid-template-columns:1fr;gap:26px;}
  .faq-intro p{max-width:none;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .paper{padding:34px 30px;}
}

@media (max-width:768px){
  body{font-size:15.5px;}
  .section{padding:52px 0;}
  .hero h1{font-size:clamp(26px,7vw,34px);}
  .hero-meta{gap:10px;}
  .hero-meta li{flex:1 1 140px;padding:10px 16px;}
  .hero-meta strong{font-size:19px;}

  .section-head{flex-direction:column;align-items:flex-start;gap:12px;}
  .flow-item{grid-template-columns:44px 1fr;gap:16px;}
  .flow-item::before{left:21px;top:48px;}
  .flow-num b{font-size:24px;}
  .flow-num span{font-size:11.5px;}
  .flow-num::after{left:35px;top:38px;}
  .flow-body{padding:20px;}

  .paper{padding:26px 20px;border-radius:12px;}
  .paper p{font-size:15.5px;}

  .cta-inner{padding:26px 22px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 100%;}

  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}

  .pos-bar{padding:18px;gap:12px;}
}

@media (max-width:520px){
  .container{padding:0 16px;}
  .logo-name{font-size:15px;}
  .logo-sub{font-size:10px;letter-spacing:.14em;}
  .search{display:none;}
  .btn{padding:11px 20px;font-size:14.5px;}
  .hero{padding:40px 0 40px;}
  .hero-actions{gap:10px;}
  .hero-actions .btn{flex:1 1 100%;}
  .flow-item{grid-template-columns:1fr;gap:10px;}
  .flow-item::before{display:none;}
  .flow-num{display:flex;align-items:baseline;gap:10px;padding-top:0;}
  .flow-num span{margin-bottom:0;}
  .flow-num::after{display:none;}
  .flow-body h3{font-size:18.5px;}
  .paper-meta span{font-size:12px;}
  .chip{padding:7px 13px;font-size:13.5px;}
}

/* roulang page: category3 */
:root{
  --bg:#0A0C0F;
  --panel:#131820;
  --panel-2:#1A2028;
  --panel-3:#101419;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.18);
  --text:#E7EDF2;
  --muted:#8B95A3;
  --teal:#14E0B1;
  --orange:#FF6A2B;
  --violet:#8B7BFF;
  --paper:#F6F7F5;
  --paper-ink:#1B1F24;
  --paper-soft:#4A5158;
  --r-card:14px;
  --r-img:12px;
  --r-badge:6px;
  --r-input:10px;
  --r-pill:999px;
  --shadow-1:0 18px 40px -24px rgba(0,0,0,.8);
  --shadow-paper:0 10px 30px -18px rgba(0,0,0,.5);
  --max:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;line-height:1.85;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img)}
a{color:inherit;text-decoration:none;transition:color .12s ease}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input{font:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--teal);outline-offset:2px}
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 24px}
.skip{position:absolute;left:-9999px;top:0;background:var(--teal);color:#062018;padding:10px 18px;border-radius:0 0 var(--r-input) 0;z-index:200}
.skip:focus{left:0}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:90;background:rgba(10,12,15,.97);border-bottom:1px solid var(--line)}
.header-inner{position:relative;display:flex;align-items:center;gap:26px;height:72px}
.logo{display:flex;align-items:center;gap:10px;flex:none}
.logo-mark{width:36px;height:36px;border-radius:10px;display:grid;place-items:center;background:var(--teal);color:#062018;font-weight:800;font-size:18px;letter-spacing:-.02em;box-shadow:inset 0 1px 0 rgba(255,255,255,.35)}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-name{font-weight:800;font-size:16px;letter-spacing:.02em}
.logo-sub{font-size:11px;color:var(--muted);letter-spacing:.16em}

.nav{display:flex;align-items:center;gap:2px;margin-left:6px}
.nav-item{position:relative}
.nav-item.has-mega{position:static}
.nav-link{position:relative;display:inline-flex;align-items:center;gap:5px;padding:9px 13px;font-size:15px;color:#C3CCD6;border-radius:8px;white-space:nowrap}
.nav-link:hover{color:#fff;background:var(--panel-2)}
.nav-link.active{color:#fff}
.nav-link.active::after{content:"";position:absolute;left:13px;right:13px;bottom:2px;height:2px;border-radius:2px;background:var(--teal)}
.caret{font-size:10px;color:var(--muted);transition:transform .18s ease}
.nav-item:hover .caret,.nav-item:focus-within .caret{transform:rotate(180deg);color:var(--teal)}

.mega{
  position:absolute;left:0;right:0;top:100%;z-index:80;
  background:var(--panel-3);border-top:1px solid var(--teal);border-bottom:1px solid var(--line);
  box-shadow:var(--shadow-1);
  opacity:0;visibility:hidden;transform:translateY(-6px);
  transition:opacity .18s ease,transform .18s ease,visibility .18s;
}
.nav-item.has-mega:hover .mega,.nav-item.has-mega:focus-within .mega{opacity:1;visibility:visible;transform:translateY(0)}
.mega-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:36px;padding:28px 24px 34px}
.mega-col h4{font-size:12px;letter-spacing:.16em;color:var(--muted);margin-bottom:14px;font-weight:600}
.mega-list{display:grid;gap:6px}
.mega-list a{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:9px 12px;border-radius:8px;font-size:14px;color:#C3CCD6}
.mega-list a:hover{background:var(--panel-2);color:#fff}
.mega-list .idx{font-size:12px;color:var(--violet);font-variant-numeric:tabular-nums;letter-spacing:.08em}
.mega-card{background:var(--panel-2);border:1px solid var(--line);border-radius:var(--r-card);padding:18px}
.mega-card strong{display:block;font-size:15px;margin-bottom:8px}
.mega-card p{font-size:13px;line-height:1.75;color:var(--muted);margin-bottom:12px}

.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.search{display:flex;align-items:center;gap:6px;background:var(--panel-2);border:1px solid var(--line);border-radius:var(--r-pill);padding:4px 4px 4px 15px;transition:border-color .12s ease,box-shadow .12s ease}
.search:focus-within{border-color:var(--teal);box-shadow:0 0 0 3px rgba(20,224,177,.12)}
.search input{width:148px;background:none;border:0;color:var(--text);font-size:14px;padding:6px 0;outline:none}
.search input::placeholder{color:#6E7885}
.search-btn{width:32px;height:32px;border-radius:50%;background:var(--panel);color:#B4BEC9;display:grid;place-items:center;font-size:13px;transition:background .12s,color .12s}
.search-btn:hover{background:var(--teal);color:#062018}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 22px;border-radius:var(--r-pill);font-size:15px;font-weight:600;border:1px solid transparent;white-space:nowrap;transition:transform .12s ease,filter .12s ease,background .12s ease,border-color .12s ease,color .12s ease}
.btn-primary{background:var(--teal);color:#062018;box-shadow:inset 0 1px 0 rgba(255,255,255,.3)}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--text)}
.btn-ghost:hover{border-color:var(--teal);color:#fff;transform:translateY(-1px)}
.btn-line{background:transparent;border-color:rgba(255,106,43,.55);color:#FFB79B}
.btn-line:hover{border-color:var(--orange);color:#FFD8C6;transform:translateY(-1px)}
.btn:disabled{opacity:.4;pointer-events:none}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--teal)}
.link-more .ar{transition:transform .12s ease}
.link-more:hover .ar{transform:translateX(3px)}

.nav-toggle{display:none;width:40px;height:40px;border-radius:8px;border:1px solid var(--line);align-items:center;justify-content:center;flex-direction:column;gap:4px}
.nav-toggle span{display:block;width:16px;height:2px;background:#C3CCD6;border-radius:2px;transition:transform .18s ease,opacity .18s ease}
.nav-toggle.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ---------- hero ---------- */
.hero{position:relative;padding:64px 0 60px;border-bottom:1px solid var(--line);overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background:
  radial-gradient(700px 320px at 88% 0%,rgba(139,123,255,.16),transparent 70%),
  radial-gradient(600px 300px at 10% 110%,rgba(20,224,177,.10),transparent 70%);
  pointer-events:none}
.hero-grid{position:relative;display:grid;grid-template-columns:6fr 5fr;gap:52px;align-items:center}
.hero-tag{display:inline-flex;align-items:center;gap:9px;font-size:12px;letter-spacing:.16em;color:#CDC7FF;border:1px solid rgba(139,123,255,.5);background:rgba(139,123,255,.1);border-radius:var(--r-pill);padding:6px 15px;font-variant-numeric:tabular-nums;font-weight:600}
.hero-tag i{width:6px;height:6px;border-radius:50%;background:var(--violet);display:block}
.hero h1{font-size:clamp(30px,3.5vw,44px);line-height:1.22;letter-spacing:-.01em;font-weight:800;margin:20px 0 18px}
.hero-sub{font-size:16px;line-height:1.85;color:#B4BEC9;max-width:36em}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin:28px 0 30px}
.hero-meta{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;border-top:1px solid var(--line);padding-top:22px}
.hero-meta li{display:flex;flex-direction:column;gap:4px}
.hero-meta strong{font-size:17px;font-weight:700;font-variant-numeric:tabular-nums;color:#fff}
.hero-meta span{font-size:12px;color:var(--muted);line-height:1.6}
.hero-visual{position:relative;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-1);background:var(--panel)}
.hero-visual img{width:100%;aspect-ratio:5/4;object-fit:cover;border-radius:0}
.hero-visual::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,12,15,0) 42%,rgba(10,12,15,.88));pointer-events:none}
.hero-visual .corner{position:absolute;width:16px;height:16px;border:1px solid rgba(255,255,255,.35)}
.hero-visual .corner.tl{left:12px;top:12px;border-right:0;border-bottom:0}
.hero-visual .corner.tr{right:12px;top:12px;border-left:0;border-bottom:0}
.hero-visual .corner.bl{left:12px;bottom:12px;border-right:0;border-top:0}
.hero-visual .corner.br{right:12px;bottom:12px;border-left:0;border-top:0}
.hero-visual .tag-float{position:absolute;left:20px;bottom:18px;z-index:2;display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.14em;color:#062018;background:var(--violet);padding:5px 12px;border-radius:var(--r-badge);font-weight:700;font-variant-numeric:tabular-nums}
.hero-visual .tag-note{position:absolute;right:20px;bottom:18px;z-index:2;font-size:12px;color:#C3CCD6;letter-spacing:.1em;font-variant-numeric:tabular-nums}

/* ---------- sections ---------- */
.section{padding:64px 0}
.section.tight{padding-top:0}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:28px}
.sec-head h2{position:relative;font-size:clamp(22px,2.4vw,30px);font-weight:800;line-height:1.35;letter-spacing:-.01em;padding-left:15px}
.sec-head h2::before{content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:4px;border-radius:2px;background:var(--teal)}
.sec-desc{color:var(--muted);font-size:15px;line-height:1.8;margin-top:10px;max-width:62ch}

/* ---------- filter ---------- */
.filter-bar{display:flex;align-items:center;gap:14px;flex-wrap:wrap;padding:20px 20px;margin-bottom:28px;background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card)}
.filter-label{font-size:13px;letter-spacing:.12em;color:var(--muted)}
.filter-group{display:flex;gap:10px;flex-wrap:wrap}
.chip{padding:8px 16px;border-radius:var(--r-pill);border:1px solid var(--line);background:var(--panel-2);font-size:14px;color:#A9B4C0;transition:border-color .12s ease,color .12s ease,background .12s ease}
.chip:hover{border-color:rgba(139,123,255,.6);color:#fff}
.chip.is-active{background:rgba(139,123,255,.16);border-color:var(--violet);color:#DDD8FF;font-weight:600}

/* ---------- waterfall ---------- */
.waterfall{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:start}
.wf-col{display:flex;flex-direction:column;gap:24px}
.wf-col.offset{padding-top:44px}
.wf-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:inset 0 1px 0 rgba(255,255,255,.06);transition:transform .16s ease,border-color .16s ease}
.wf-card:hover{transform:translateY(-2px);border-color:rgba(20,224,177,.3)}
.wf-media{position:relative;overflow:hidden;background:var(--panel-2)}
.wf-media img{width:100%;object-fit:cover;border-radius:0;transition:transform .3s ease}
.wf-card:hover .wf-media img{transform:scale(1.02)}
.ratio-4x3 img{aspect-ratio:4/3}
.ratio-16x9 img{aspect-ratio:16/9}
.ratio-3x2 img{aspect-ratio:3/2}
.badge{position:absolute;left:14px;top:14px;font-size:12px;padding:4px 10px;border-radius:var(--r-badge);background:rgba(10,12,15,.84);border:1px solid rgba(139,123,255,.55);color:#CDC7FF;letter-spacing:.04em;font-weight:600}
.wf-body{padding:20px 22px 22px}
.wf-body h3{font-size:20px;line-height:1.45;font-weight:700;margin-bottom:10px;letter-spacing:-.01em}
.wf-body h3 a:hover{color:var(--teal)}
.wf-body p{font-size:15px;line-height:1.7;color:#A9B4C0;margin-bottom:16px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.stat-row{display:grid;grid-template-columns:1fr 1fr;gap:12px;padding:14px 16px;border-radius:10px;background:var(--panel-2);border:1px solid var(--line);margin-bottom:16px}
.stat b{display:block;font-size:20px;font-weight:700;line-height:1.3;color:#fff;font-variant-numeric:tabular-nums}
.stat span{font-size:12px;color:var(--muted)}
.wf-foot{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:13px;color:#7D8794;border-top:1px solid var(--line);padding-top:14px}

/* ---------- paper ---------- */
.paper{background:var(--paper);color:var(--paper-ink);border-radius:var(--r-card);padding:40px 42px;box-shadow:var(--shadow-paper)}
.paper h2{font-size:clamp(22px,2.3vw,28px);font-weight:800;line-height:1.35;margin-bottom:14px;letter-spacing:-.01em}
.paper p{font-size:16px;line-height:1.85;color:var(--paper-soft);max-width:760px;margin-bottom:16px}
.paper-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:24px}
.paper-item{border-top:2px solid #1B1F24;padding-top:14px}
.paper-item strong{display:block;font-size:15px;margin-bottom:6px;color:var(--paper-ink)}
.paper-item span{font-size:14px;line-height:1.75;color:var(--paper-soft);display:block}

/* ---------- related ---------- */
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.rel-card{display:flex;flex-direction:column;gap:10px;padding:24px 24px 26px;background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);transition:transform .16s ease,border-color .16s ease}
.rel-card:hover{transform:translateY(-2px);border-color:rgba(20,224,177,.35)}
.rel-idx{font-size:13px;letter-spacing:.14em;color:var(--violet);font-variant-numeric:tabular-nums;font-weight:600}
.rel-card h3{font-size:19px;font-weight:700;line-height:1.4}
.rel-card p{font-size:14px;line-height:1.75;color:#A9B4C0}
.rel-card .link-more{margin-top:auto}

/* ---------- faq ---------- */
.faq{display:grid;grid-template-columns:4fr 6fr;gap:52px;align-items:start}
.faq-intro h2{position:relative;font-size:clamp(22px,2.4vw,30px);font-weight:800;line-height:1.35;padding-left:15px;margin-bottom:14px}
.faq-intro h2::before{content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:4px;border-radius:2px;background:var(--teal)}
.faq-intro p{color:var(--muted);font-size:15px;line-height:1.8}
.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:18px;padding:18px 0;font-size:16px;font-weight:600;line-height:1.6}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--teal)}
.faq-plus{flex:none;width:22px;height:22px;border-radius:50%;border:1px solid var(--line-strong);display:grid;place-items:center;font-size:14px;color:#B4BEC9;transition:transform .18s ease,color .18s ease,border-color .18s ease}
.faq-item[open] .faq-plus{transform:rotate(45deg);color:var(--teal);border-color:var(--teal)}
.faq-item p{font-size:15px;line-height:1.8;color:#A9B4C0;margin:0 0 20px;max-width:64ch}

/* ---------- cta strip ---------- */
.cta-strip{display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;background:var(--panel);border:1px solid var(--line);border-left:3px solid var(--teal);border-radius:var(--r-card);padding:28px 32px;box-shadow:inset 0 1px 0 rgba(255,255,255,.06)}
.cta-strip h2{font-size:clamp(20px,2.2vw,26px);font-weight:800;line-height:1.4;margin-bottom:8px}
.cta-strip p{font-size:14px;line-height:1.8;color:var(--muted);max-width:48ch}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}
.cta-tip{font-size:13px;color:var(--muted);margin-top:12px;min-height:1.6em}
[data-act].is-done{border-color:var(--teal);color:var(--teal);background:rgba(20,224,177,.1)}
[data-act].is-done::after{content:" ✓"}

/* ---------- footer ---------- */
.site-footer{background:#08090C;border-top:1px solid var(--line);padding-top:56px;margin-top:28px}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand p{font-size:14px;line-height:1.8;color:var(--muted);margin-top:16px;max-width:34ch}
.footer-col h4{font-size:14px;letter-spacing:.06em;color:#fff;margin-bottom:14px}
.footer-col ul{display:grid;gap:10px}
.footer-col a{font-size:14px;color:var(--muted)}
.footer-col a:hover{color:var(--teal)}
.footer-col p{font-size:14px;line-height:1.8;color:var(--muted)}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;border-top:1px solid var(--line);margin-top:44px;padding:20px 0 28px;font-size:13px;color:#77828F}
.to-top{color:#A9B4C0}
.to-top:hover{color:var(--teal)}

/* ---------- responsive ---------- */
@media (max-width:1280px){
  .container{padding:0 20px}
  .hero-grid{gap:40px}
}
@media (max-width:1024px){
  .search input{width:112px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-visual{max-width:560px}
  .waterfall{grid-template-columns:1fr 1fr}
  .wf-col.offset{padding-top:0}
  .faq{grid-template-columns:1fr;gap:28px}
  .paper-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:900px){
  .header-inner{height:64px;gap:14px}
  .search{display:none}
  .nav-toggle{display:inline-flex}
  .nav{position:fixed;top:64px;left:0;right:0;bottom:0;z-index:95;flex-direction:column;align-items:stretch;gap:0;margin:0;padding:12px 20px 48px;background:#0C1015;border-top:1px solid var(--line);overflow-y:auto;transform:translateX(101%);transition:transform .18s ease}
  .nav.is-open{transform:translateX(0)}
  .nav-item{border-bottom:1px solid var(--line)}
  .nav-item.has-mega{position:relative}
  .nav-link{width:100%;justify-content:space-between;padding:16px 4px;font-size:16px;border-radius:0}
  .nav-link:hover{background:transparent;color:var(--teal)}
  .nav-link.active::after{display:none}
  .mega{display:none}
  .header-actions .btn{padding:9px 16px;font-size:14px}
}
@media (max-width:768px){
  .hero{padding:44px 0 40px}
  .section{padding:48px 0}
  .hero-meta{grid-template-columns:1fr;gap:12px}
  .hero-meta li{flex-direction:row;align-items:baseline;gap:10px;border-bottom:1px dashed var(--line);padding-bottom:10px}
  .waterfall{grid-template-columns:1fr}
  .rel-grid{grid-template-columns:1fr}
  .paper{padding:28px 22px}
  .paper-grid{grid-template-columns:1fr}
  .cta-strip{padding:24px 20px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .hero h1{font-size:28px}
  .hero-sub{font-size:15px}
  .hero-cta .btn{width:100%}
  .header-actions .btn{display:none}
  .wf-body{padding:18px 18px 20px}
  .wf-body h3{font-size:18px}
  .stat-row{grid-template-columns:1fr}
  .filter-bar{padding:16px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .logo-sub{display:none}
}