/* roulang page: index */
:root{
  --ink:#12362E;
  --ink-deep:#0B241E;
  --accent:#C96A24;
  --accent-soft:#F2E4D6;
  --bg:#F7F5F0;
  --bg-alt:#EFECE5;
  --card:#FFFFFF;
  --text:#16191A;
  --text-2:#4A5250;
  --text-3:#8A908D;
  --line:#E2DED5;
  --line-strong:#C9C3B6;
  --ok:#2F7A55;
  --warn:#B4761F;
  --err:#A63B2B;
  --info:#2C5F76;
  --r-btn:4px;
  --r-card:12px;
  --r-img:10px;
  --shadow-1:0 1px 2px rgba(18,54,46,.04);
  --shadow-2:0 10px 28px -12px rgba(18,54,46,.18);
  --ease:cubic-bezier(.22,.61,.36,1);
  --sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  --gutter:40px;
  --section-gap:112px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input,textarea,select{font-family:inherit;font-size:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:2px;}
::selection{background:var(--accent-soft);color:var(--ink);}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 var(--gutter);}
.mono{font-family:var(--mono);letter-spacing:.02em;}
.eyebrow{
  font-family:var(--mono);
  font-size:12px;
  line-height:1.2;
  letter-spacing:.12em;
  color:var(--accent);
  text-transform:uppercase;
}
.section{padding:var(--section-gap) 0;}
.section-alt{background:var(--bg-alt);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap;}
.section-head h2{
  font-size:34px;line-height:1.24;font-weight:700;letter-spacing:-.01em;color:var(--text);
  max-width:22ch;
}
.section-head h2::after{
  content:"";display:block;width:40px;height:2px;background:var(--ink);margin-top:16px;
}
.section-head p{color:var(--text-2);max-width:56ch;font-size:15px;}
.link-arrow{
  position:relative;color:var(--accent);font-weight:600;font-size:15px;display:inline-flex;align-items:center;gap:6px;
}
.link-arrow::after{
  content:"";position:absolute;left:0;right:26px;bottom:-3px;height:1px;background:var(--accent);
  transform:scaleX(0);transform-origin:left;transition:transform 180ms var(--ease);
}
.link-arrow:hover::after{transform:scaleX(1);}
.link-arrow svg{width:14px;height:14px;transition:transform 180ms var(--ease);}
.link-arrow:hover svg{transform:translateX(4px);}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-weight:600;font-size:15px;line-height:1;
  transition:background-color 180ms var(--ease),color 180ms var(--ease),border-color 180ms var(--ease),transform 180ms var(--ease);
}
.btn svg{width:16px;height:16px;transition:transform 180ms var(--ease);}
.btn:hover svg{transform:translateX(4px);}
.btn:active{transform:scale(.985);}
.btn-primary{background:var(--ink);color:#F7F5F0;}
.btn-primary:hover{background:var(--ink-deep);}
.btn-ghost{background:transparent;border:1px solid var(--line-strong);color:var(--ink);}
.btn-ghost:hover{border-color:var(--accent);background:var(--accent-soft);}
.btn-light{background:#F7F5F0;color:var(--ink);}
.btn-light:hover{background:#FFFFFF;}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn:disabled{opacity:.45;cursor:not-allowed;}

.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  background:var(--accent-soft);color:var(--accent);
  font-family:var(--mono);font-size:12px;letter-spacing:.04em;
}
.badge-gray{background:var(--bg-alt);color:var(--text-2);}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  background:transparent;
  transition:background-color 200ms var(--ease),border-color 200ms var(--ease),backdrop-filter 200ms var(--ease);
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled{
  background:rgba(247,245,240,.88);
  backdrop-filter:blur(8px) saturate(140%);
  -webkit-backdrop-filter:blur(8px) saturate(140%);
  border-bottom-color:var(--line);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.brand-mark{
  font-family:var(--mono);font-size:20px;font-weight:700;letter-spacing:-.02em;color:var(--ink);
}
.brand-divider{width:1px;height:24px;background:var(--line-strong);}
.brand-sub{font-size:12px;color:var(--text-3);line-height:1.2;letter-spacing:.02em;}
.nav-main{display:flex;align-items:center;gap:32px;}
.nav-link{
  position:relative;font-size:15px;font-weight:500;color:var(--text-2);padding:6px 0;
  transition:color 180ms var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--accent);
  transform:scaleX(0);transform-origin:left;transition:transform 180ms var(--ease);
}
.nav-link:hover{color:var(--ink);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--ink);font-weight:600;}
.nav-link.is-active::after{transform:scaleX(1);}
.nav-link.is-active::before{
  content:"";position:absolute;left:-12px;top:50%;transform:translateY(-50%);
  width:4px;height:4px;border-radius:50%;background:var(--accent);
}
.header-actions{display:flex;align-items:center;gap:18px;}
.header-consult{font-size:14px;color:var(--text-2);position:relative;}
.header-consult::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:1px;background:var(--line-strong);
}
.header-consult:hover{color:var(--ink);}
.nav-toggle{
  display:none;width:44px;height:44px;align-items:center;justify-content:center;
  border-radius:var(--r-btn);
}
.nav-toggle span{display:block;width:24px;height:2px;background:var(--ink);position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:24px;height:2px;background:var(--ink);
}
.nav-toggle span::before{top:-7px;}
.nav-toggle span::after{top:7px;}
.drawer-mask{
  position:fixed;inset:0;background:rgba(11,36,30,.42);z-index:70;
  opacity:0;visibility:hidden;transition:opacity 220ms var(--ease),visibility 220ms var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:86vw;max-width:380px;background:var(--bg);z-index:80;
  transform:translateX(102%);transition:transform 280ms var(--ease);
  display:flex;flex-direction:column;padding:20px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;height:60px;margin-bottom:12px;}
.drawer-close{width:44px;height:44px;display:flex;align-items:center;justify-content:center;}
.drawer-close svg{width:20px;height:20px;}
.drawer-nav a{
  display:flex;align-items:center;height:56px;font-size:20px;font-weight:600;color:var(--ink);
  border-bottom:1px solid var(--line);
}
.drawer-nav a.is-active{color:var(--accent);}
.drawer-foot{margin-top:auto;padding-top:24px;}
.drawer-foot .btn{width:100%;}

/* ---------- hero ---------- */
.hero{
  position:relative;
  padding:148px 0 0;
  background:
    linear-gradient(180deg,rgba(247,245,240,.94) 0%,rgba(247,245,240,1) 62%),
    url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  overflow:hidden;
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(18,54,46,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(18,54,46,.05) 1px,transparent 1px);
  background-size:48px 48px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.7),transparent 78%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.7),transparent 78%);
}
.hero-grid{
  position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:64px;align-items:center;
}
.hero-copy .eyebrow{display:block;margin-bottom:20px;}
.hero h1{
  font-size:56px;line-height:1.08;font-weight:800;letter-spacing:-.02em;color:var(--text);
  margin-bottom:22px;
}
.hero h1 em{font-style:normal;color:var(--ink);}
.hero-sub{font-size:18px;color:var(--text-2);max-width:34ch;margin-bottom:32px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:40px;}
.hero-trust{display:flex;flex-direction:column;gap:10px;}
.hero-trust li{display:flex;align-items:baseline;gap:12px;font-size:14px;color:var(--text-2);}
.hero-trust .mono{font-size:14px;color:var(--ink);font-weight:600;}
.hero-visual{position:relative;}
.hero-figure{
  position:relative;border-radius:var(--r-img);overflow:hidden;aspect-ratio:16/10;background:var(--bg-alt);
  box-shadow:var(--shadow-1);
}
.hero-figure img{width:100%;height:100%;object-fit:cover;}
.hero-figure::after{
  content:"";position:absolute;inset:0;
  background-image:repeating-linear-gradient(45deg,rgba(18,54,46,.06) 0 1px,transparent 1px 12px);
}
.status-card{
  position:absolute;right:-8px;bottom:-24px;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-card);padding:16px 18px;box-shadow:var(--shadow-2);max-width:280px;
}
.status-card .mono{font-size:12px;letter-spacing:.12em;color:var(--accent);display:block;margin-bottom:6px;}
.status-card p{font-size:14px;color:var(--text-2);line-height:1.6;}
.status-dot{
  display:inline-block;width:8px;height:8px;border-radius:50%;background:var(--ok);margin-right:8px;
}
.hero-bar{
  position:relative;margin-top:88px;border-top:1px solid var(--line);
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding:28px 0 40px;
}
.hero-bar div{display:flex;flex-direction:column;gap:6px;}
.hero-bar .mono{font-size:26px;font-weight:700;color:var(--ink);letter-spacing:-.01em;}
.hero-bar span{font-size:12px;color:var(--text-3);}

/* ---------- value ---------- */
.value-layout{display:grid;grid-template-columns:1fr 2fr;gap:56px;align-items:start;}
.value-intro h2{font-size:34px;line-height:1.24;font-weight:700;letter-spacing:-.01em;margin-bottom:20px;}
.value-intro h2::after{content:"";display:block;width:40px;height:2px;background:var(--ink);margin-top:16px;}
.value-intro p{color:var(--text-2);font-size:15px;margin-bottom:24px;max-width:32ch;}
.value-list{display:flex;flex-direction:column;}
.value-item{
  display:grid;grid-template-columns:72px 1fr;gap:24px;
  padding:28px 0;border-top:1px solid var(--line);
}
.value-item:last-child{border-bottom:1px solid var(--line);}
.value-item .num{font-family:var(--mono);font-size:12px;letter-spacing:.12em;color:var(--accent);padding-top:6px;}
.value-item h3{font-size:20px;font-weight:600;margin-bottom:8px;}
.value-item p{color:var(--text-2);font-size:15px;max-width:60ch;}

/* ---------- features ---------- */
.feature-wrap{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.feature-item{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:28px;
  transition:transform 180ms var(--ease),border-color 180ms var(--ease),box-shadow 180ms var(--ease);
}
.feature-item:hover{transform:translateY(-2px);border-color:var(--line-strong);box-shadow:var(--shadow-2);}
.feature-item.span-wide{grid-column:span 2;display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;padding:36px;}
.feature-head{display:flex;align-items:baseline;gap:14px;margin-bottom:14px;}
.feature-head .num{font-family:var(--mono);font-size:12px;letter-spacing:.12em;color:var(--accent);}
.feature-item h3{font-size:20px;font-weight:600;line-height:1.4;}
.feature-item p{color:var(--text-2);font-size:15px;margin-bottom:18px;}
.feature-points li{
  position:relative;padding-left:20px;font-size:14px;color:var(--text-2);margin-bottom:10px;
}
.feature-points li::before{
  content:"";position:absolute;left:0;top:11px;width:12px;height:1px;background:var(--line-strong);
}
.feature-media{border-radius:var(--r-img);overflow:hidden;aspect-ratio:4/3;background:var(--bg-alt);}
.feature-media img{width:100%;height:100%;object-fit:cover;transition:transform 420ms var(--ease);}
.feature-item:hover .feature-media img{transform:scale(1.03);}

/* ---------- scenes ---------- */
.scene-row{
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;padding:48px 0;
  border-top:1px solid var(--line);
}
.scene-row:last-child{border-bottom:1px solid var(--line);}
.scene-row.reverse .scene-media{order:2;}
.scene-media{border-radius:var(--r-img);overflow:hidden;aspect-ratio:4/3;background:var(--bg-alt);}
.scene-media img{width:100%;height:100%;object-fit:cover;}
.scene-row h3{font-size:24px;font-weight:700;line-height:1.32;margin:16px 0 14px;letter-spacing:-.01em;}
.scene-row p{color:var(--text-2);font-size:15px;margin-bottom:14px;max-width:52ch;}
.scene-figure{display:flex;align-items:baseline;gap:12px;margin-top:20px;padding-top:20px;border-top:1px solid var(--line);}
.scene-figure .mono{font-size:28px;font-weight:700;color:var(--ink);}
.scene-figure span{font-size:13px;color:var(--text-3);max-width:26ch;}

/* ---------- cases ---------- */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.case-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  display:flex;flex-direction:column;
  transition:transform 180ms var(--ease),border-color 180ms var(--ease),box-shadow 180ms var(--ease);
}
.case-card:hover{transform:translateY(-2px);border-color:var(--line-strong);box-shadow:var(--shadow-2);}
.case-card figure{margin:0;aspect-ratio:16/9;overflow:hidden;background:var(--bg-alt);}
.case-card figure img{width:100%;height:100%;object-fit:cover;transition:transform 420ms var(--ease);}
.case-card:hover figure img{transform:scale(1.03);}
.case-body{padding:24px;display:flex;flex-direction:column;gap:14px;flex:1;}
.case-body h3{font-size:18px;font-weight:600;line-height:1.5;}
.case-data{display:flex;gap:28px;padding-top:4px;}
.case-data div .mono{display:block;font-size:22px;font-weight:700;color:var(--ink);}
.case-data div span{font-size:12px;color:var(--text-3);}
.case-body .link-arrow{margin-top:auto;font-size:14px;}

/* ---------- price ---------- */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch;}
.price-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:32px 28px;
  display:flex;flex-direction:column;transition:border-color 180ms var(--ease),box-shadow 180ms var(--ease),transform 180ms var(--ease);
}
.price-card:hover{border-color:var(--line-strong);box-shadow:var(--shadow-2);}
.price-card.featured{
  border-color:var(--ink);border-width:1px;transform:translateY(-8px);padding-bottom:40px;
}
.price-card.featured:hover{transform:translateY(-10px);}
.price-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
.price-top h3{font-size:18px;font-weight:600;}
.price-amount{font-family:var(--mono);font-size:36px;font-weight:700;color:var(--ink);line-height:1.1;margin-bottom:8px;}
.price-amount small{font-size:13px;font-weight:400;color:var(--text-3);margin-left:6px;font-family:var(--sans);}
.price-note{font-size:14px;color:var(--text-2);margin-bottom:24px;padding-bottom:24px;border-bottom:1px solid var(--line);}
.price-feats{display:flex;flex-direction:column;gap:12px;margin-bottom:28px;flex:1;}
.price-feats li{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:var(--text-2);}
.price-feats svg{width:16px;height:16px;flex-shrink:0;margin-top:4px;}
.price-feats li.off{color:var(--text-3);}
.price-footnote{display:flex;gap:24px;flex-wrap:wrap;margin-top:32px;font-size:13px;color:var(--text-3);}
.price-footnote a{position:relative;color:var(--text-2);}
.price-footnote a:hover{color:var(--accent);}

/* ---------- news ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  display:flex;flex-direction:column;
  transition:transform 180ms var(--ease),border-color 180ms var(--ease),box-shadow 180ms var(--ease);
}
.news-card:hover{transform:translateY(-2px);border-color:var(--line-strong);box-shadow:var(--shadow-2);}
.news-card figure{margin:0;aspect-ratio:16/9;overflow:hidden;background:var(--bg-alt);}
.news-card figure img{width:100%;height:100%;object-fit:cover;transition:transform 420ms var(--ease);}
.news-card:hover figure img{transform:scale(1.03);}
.news-body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1;}
.news-body h3{font-size:17px;font-weight:600;line-height:1.5;}
.news-body h3 a:hover{color:var(--accent);}
.news-summary{
  font-size:14px;color:var(--text-2);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{
  margin-top:auto;padding-top:16px;border-top:1px solid var(--line);
  display:flex;align-items:center;gap:12px;font-family:var(--mono);font-size:12px;color:var(--text-3);
}
.news-meta svg{width:14px;height:14px;margin-left:auto;color:var(--accent);transition:transform 180ms var(--ease);}
.news-card:hover .news-meta svg{transform:translateX(4px);}
.empty-state{
  border:1px solid var(--line);border-radius:var(--r-card);background:var(--card);
  padding:56px 24px;text-align:center;display:flex;flex-direction:column;align-items:center;gap:18px;
}
.empty-state p{color:var(--text-2);font-size:15px;}

/* ---------- faq ---------- */
.faq-list{border-top:1px solid var(--line);max-width:900px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:24px;text-align:left;
  padding:24px 0;font-size:17px;font-weight:600;color:var(--text);
  transition:color 180ms var(--ease);
}
.faq-q:hover{color:var(--ink);}
.faq-icon{
  flex-shrink:0;width:22px;height:22px;position:relative;
  transition:transform 220ms var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--accent);border-radius:2px;
}
.faq-icon::before{left:0;top:10px;width:22px;height:2px;}
.faq-icon::after{left:10px;top:0;width:2px;height:22px;}
.faq-item.is-open .faq-icon{transform:rotate(45deg);}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height 300ms var(--ease);
}
.faq-a-inner{
  border-left:2px solid var(--accent);padding:0 0 24px 20px;color:var(--text-2);font-size:15px;max-width:72ch;
}

/* ---------- cta band ---------- */
.cta-band{background:var(--ink);color:#F7F5F0;padding:72px 0;}
.cta-band h2{font-size:34px;font-weight:700;line-height:1.24;letter-spacing:-.01em;margin-bottom:12px;}
.cta-band h3{font-size:20px;font-weight:400;color:rgba(247,245,240,.78);margin-bottom:32px;}
.cta-band .cta-note{margin-top:20px;font-size:13px;color:rgba(247,245,240,.6);}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:rgba(247,245,240,.72);padding:64px 0 32px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:48px;padding-bottom:48px;border-bottom:1px solid rgba(247,245,240,.14);}
.footer-brand .brand-mark{color:#F7F5F0;}
.footer-brand .brand-sub{color:rgba(247,245,240,.55);}
.footer-brand p{margin-top:18px;font-size:14px;line-height:1.8;max-width:34ch;}
.footer-contact{margin-top:16px;font-family:var(--mono);font-size:13px;color:rgba(247,245,240,.6);}
.footer-col h4{font-size:14px;font-weight:600;color:#F7F5F0;margin-bottom:18px;letter-spacing:.02em;}
.footer-col a{display:block;font-size:14px;padding:7px 0;transition:color 180ms var(--ease);}
.footer-col a:hover{color:var(--accent-soft);}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:20px;padding-top:28px;font-size:13px;flex-wrap:wrap;}
.footer-bottom a{color:rgba(247,245,240,.72);}
.footer-bottom a:hover{color:var(--accent-soft);}
.to-top{display:inline-flex;align-items:center;gap:8px;}
.to-top svg{width:14px;height:14px;}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(14px);}
.reveal.is-in{opacity:1;transform:none;transition:opacity 420ms var(--ease),transform 420ms var(--ease);}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  :root{--gutter:32px;--section-gap:96px;}
  .hero h1{font-size:48px;}
}
@media (max-width:1023px){
  :root{--gutter:24px;--section-gap:88px;}
  .nav-main,.header-consult{display:none;}
  .nav-toggle{display:flex;}
  .hero{padding-top:120px;}
  .hero-grid{grid-template-columns:1fr;gap:56px;}
  .hero h1{font-size:40px;}
  .hero-bar{grid-template-columns:repeat(2,1fr);gap:24px 16px;margin-top:64px;}
  .value-layout{grid-template-columns:1fr;gap:32px;}
  .feature-wrap{grid-template-columns:1fr;}
  .feature-item.span-wide{grid-column:span 1;grid-template-columns:1fr;padding:28px;}
  .scene-row{grid-template-columns:1fr;gap:28px;padding:36px 0;}
  .scene-row.reverse .scene-media{order:0;}
  .case-grid{grid-template-columns:repeat(2,1fr);}
  .price-grid{grid-template-columns:1fr;gap:20px;}
  .price-card.featured{transform:none;}
  .price-card.featured:hover{transform:translateY(-2px);}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
}
@media (max-width:767px){
  :root{--gutter:20px;--section-gap:64px;}
  .header-inner{height:60px;}
  .hero{padding-top:104px;}
  .hero h1{font-size:34px;line-height:1.14;}
  .hero-sub{font-size:16px;}
  .hero-actions .btn{width:100%;}
  .hero-bar .mono{font-size:22px;}
  .section-head h2{font-size:26px;line-height:1.3;}
  .section-head{margin-bottom:28px;}
  .value-intro h2{font-size:26px;}
  .value-item{grid-template-columns:1fr;gap:8px;padding:22px 0;}
  .scene-row h3{font-size:20px;}
  .case-grid,.news-grid{grid-template-columns:1fr;}
  .cta-band h2{font-size:26px;}
  .cta-band h3{font-size:17px;}
  .status-card{position:static;margin-top:16px;max-width:none;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .faq-q{font-size:16px;padding:20px 0;}
}
@media (max-width:520px){
  .hero h1{font-size:30px;}
  .hero-bar{grid-template-columns:1fr 1fr;}
  .brand-sub{display:none;}
  .case-data{gap:20px;}
}

/* roulang page: article */
:root{
  --ink:#12362E;
  --ink-dark:#0B241E;
  --amber:#C96A24;
  --sand:#F2E4D6;
  --ivory:#F7F5F0;
  --ivory-2:#EFECE5;
  --card:#FFFFFF;
  --text:#16191A;
  --text-2:#4A5250;
  --text-3:#8A908D;
  --line:#E2DED5;
  --line-strong:#C9C3B6;
  --ok:#2F7A55;
  --warn:#B4761F;
  --err:#A63B2B;
  --info:#2C5F76;
  --r-btn:4px;
  --r-card:12px;
  --r-img:10px;
  --sh-1:0 1px 2px rgba(18,54,46,.04);
  --sh-2:0 10px 28px -12px rgba(18,54,46,.18);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  --font-mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  --header-h:72px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--ivory);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--text);}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
svg{display:block;}
a:focus-visible,button:focus-visible{outline:2px solid var(--amber);outline-offset:2px;border-radius:2px;}

.container{max-width:1200px;margin:0 auto;padding:0 40px;}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  height:var(--header-h);
  background:rgba(247,245,240,.92);
  -webkit-backdrop-filter:blur(8px) saturate(140%);
  backdrop-filter:blur(8px) saturate(140%);
  border-bottom:1px solid var(--line);
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--line-strong);box-shadow:var(--sh-1);}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:var(--header-h);}
.brand{display:flex;flex-direction:column;line-height:1.15;padding:4px 0;}
.brand-mark{font-family:var(--font-mono);font-size:20px;font-weight:800;letter-spacing:.02em;color:var(--ink);}
.brand-sub{font-size:12px;color:var(--text-3);letter-spacing:.04em;}
.nav-main{display:flex;align-items:center;gap:32px;}
.nav-link{position:relative;font-size:15px;font-weight:500;color:var(--text-2);padding:6px 0;transition:color .18s var(--ease);}
.nav-link::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--amber);transform:scaleX(0);transform-origin:left;transition:transform .18s var(--ease);}
.nav-link:hover{color:var(--ink);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--ink);font-weight:600;}
.nav-link.is-active::after{transform:scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:16px;}
.nav-toggle{display:none;width:44px;height:44px;background:transparent;border:1px solid var(--line-strong);border-radius:var(--r-btn);cursor:pointer;padding:0;}
.nav-toggle span{display:block;width:20px;height:2px;margin:4px auto;background:var(--ink);transition:transform .18s var(--ease);}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease);
}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-primary{background:var(--ink);color:var(--ivory);}
.btn-primary:hover{background:var(--ink-dark);}
.btn-primary .arrow{transition:transform .18s var(--ease);}
.btn-primary:hover .arrow{transform:translateX(4px);}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--ink);}
.btn-ghost:hover{border-color:var(--amber);background:var(--sand);}
.btn-light{background:var(--ivory);color:var(--ink);}
.btn-light:hover{background:#fff;}
.btn:active{transform:scale(.985);}

/* ---------- page hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  padding:132px 0 56px;
  color:var(--ivory);
  background-image:linear-gradient(rgba(11,36,30,.88),rgba(11,36,30,.76)),url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(247,245,240,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(247,245,240,.05) 1px,transparent 1px);
  background-size:48px 48px;
}
.page-hero .container{position:relative;z-index:1;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:rgba(247,245,240,.72);}
.breadcrumb a{color:rgba(247,245,240,.72);transition:color .18s var(--ease);}
.breadcrumb a:hover{color:var(--sand);}
.breadcrumb .sep{font-family:var(--font-mono);color:rgba(201,106,36,.92);}
.breadcrumb .current{color:var(--ivory);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:52vw;}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:999px;
  background:var(--sand);color:var(--amber);
  font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;
}
.article-head{margin-top:20px;}
.article-title{
  font-size:clamp(28px,4vw,44px);line-height:1.24;font-weight:800;letter-spacing:-.01em;
  color:#fff;margin:18px 0 20px;max-width:900px;overflow-wrap:break-word;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:12px;font-size:13px;color:rgba(247,245,240,.78);}
.article-meta .mono{font-family:var(--font-mono);letter-spacing:.06em;}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:rgba(201,106,36,.9);}

/* ---------- article layout ---------- */
.article-section{padding:72px 0 96px;background:var(--ivory);}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 240px;gap:64px;align-items:start;}
.rule{height:1px;background:var(--ink);opacity:.85;margin-bottom:40px;}
.article-body{max-width:760px;font-size:17px;line-height:1.9;color:var(--text-2);overflow-wrap:break-word;}
.article-body > * + *{margin-top:20px;}
.article-body h2{font-size:26px;line-height:1.5;color:var(--text);margin-top:44px;font-weight:700;letter-spacing:-.01em;}
.article-body h3{font-size:20px;line-height:1.6;color:var(--text);margin-top:32px;font-weight:600;}
.article-body h4{font-size:17px;line-height:1.6;color:var(--text);margin-top:24px;font-weight:600;}
.article-body p{margin:0;}
.article-body strong{color:var(--text);font-weight:600;}
.article-body a{color:var(--amber);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:var(--ink);}
.article-body li{position:relative;padding-left:20px;margin-bottom:12px;}
.article-body ul li::before{content:"";position:absolute;left:0;top:.82em;width:12px;height:1px;background:var(--line-strong);}
.article-body ol{counter-reset:li;}
.article-body ol li{counter-increment:li;}
.article-body ol li::before{
  content:counter(li,decimal-leading-zero);position:absolute;left:0;top:.15em;
  font-family:var(--font-mono);font-size:12px;color:var(--amber);letter-spacing:.06em;
}
.article-body blockquote{
  margin:28px 0;padding:20px 24px;border-left:3px solid var(--amber);
  background:var(--sand);border-radius:0 var(--r-img) var(--r-img) 0;color:var(--text);
}
.article-body blockquote p{margin:0;}
.article-body img{border-radius:var(--r-img);margin:28px 0;width:100%;height:auto;background:var(--ivory-2);}
.article-body figure{margin:28px 0;}
.article-body figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:10px;}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;margin:28px 0;}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left;}
.article-body th{background:var(--ivory-2);font-weight:600;color:var(--text);}
.article-body hr{border:none;height:1px;background:var(--line);margin:36px 0;}

.article-aside{position:sticky;top:104px;}
.toc{border-top:2px solid var(--ink);padding-top:16px;}
.toc-title{font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;color:var(--text-3);}
.toc-list{margin-top:12px;}
.toc-item a{
  display:block;padding:8px 0 8px 12px;border-left:2px solid transparent;
  font-size:14px;line-height:1.6;color:var(--text-2);transition:color .18s var(--ease),border-color .18s var(--ease);
}
.toc-item a:hover{color:var(--ink);}
.toc-item.is-current a{color:var(--amber);border-left-color:var(--amber);font-weight:600;}
.toc-item-sub a{padding-left:24px;font-size:13px;color:var(--text-3);}

.empty-state{
  border:1px solid var(--line);border-radius:var(--r-card);background:var(--card);
  padding:56px 24px;text-align:center;
}
.empty-state h2{font-size:20px;margin-bottom:12px;}
.empty-state p{color:var(--text-2);margin-bottom:24px;}
.back-entry{margin-top:56px;padding-top:32px;border-top:1px solid var(--line);}

/* ---------- related ---------- */
.related-section{padding:0 0 96px;background:var(--ivory);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;}
.section-title{font-size:28px;line-height:1.3;font-weight:700;letter-spacing:-.01em;}
.section-note{font-size:13px;color:var(--text-3);}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.related-card{
  display:block;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-1);
  transition:transform .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.related-card:hover{transform:translateY(-2px);border-color:var(--line-strong);box-shadow:var(--sh-2);}
.related-card h3{font-size:17px;line-height:1.55;font-weight:600;color:var(--text);transition:color .18s var(--ease);}
.related-card:hover h3{color:var(--amber);}
.related-card .date{display:block;margin-top:16px;font-family:var(--font-mono);font-size:12px;color:var(--text-3);letter-spacing:.06em;}

/* ---------- cta band ---------- */
.cta-band{background:var(--ink);color:var(--ivory);padding:64px 0;}
.cta-band h2{color:#fff;font-size:32px;line-height:1.3;letter-spacing:-.01em;}
.cta-band .cta-sub{font-size:18px;font-weight:400;color:var(--sand);margin-top:8px;}
.cta-band p{color:rgba(247,245,240,.78);max-width:620px;margin-top:16px;}
.cta-actions{margin-top:32px;display:flex;flex-wrap:wrap;gap:16px;align-items:center;}
.cta-actions .hint{font-size:13px;color:rgba(247,245,240,.6);}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:rgba(247,245,240,.75);padding:72px 0 28px;font-size:14px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:48px;}
.footer-brand .brand-mark{display:block;font-family:var(--font-mono);font-size:20px;font-weight:800;color:#fff;letter-spacing:.02em;}
.footer-brand .brand-sub{display:block;font-size:12px;color:rgba(201,106,36,.95);letter-spacing:.06em;margin-top:6px;}
.footer-brand p{margin-top:16px;max-width:330px;line-height:1.8;color:rgba(247,245,240,.72);}
.footer-contact{margin-top:12px;font-family:var(--font-mono);font-size:13px;color:rgba(247,245,240,.6);}
.footer-col h4{color:#fff;font-size:14px;font-weight:600;margin-bottom:16px;letter-spacing:.02em;}
.footer-col a{display:block;padding:6px 0;color:rgba(247,245,240,.72);transition:color .18s var(--ease);}
.footer-col a:hover{color:var(--sand);}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:16px;justify-content:space-between;align-items:center;
  margin-top:56px;padding-top:24px;border-top:1px solid rgba(247,245,240,.14);font-size:13px;color:rgba(247,245,240,.6);
}
.to-top{display:inline-flex;align-items:center;gap:6px;color:rgba(247,245,240,.72);transition:color .18s var(--ease);}
.to-top svg{width:16px;height:16px;transition:transform .18s var(--ease);}
.to-top:hover{color:var(--sand);}
.to-top:hover svg{transform:translateY(-3px);}

/* ---------- drawer ---------- */
.drawer-mask{
  position:fixed;inset:0;z-index:120;background:rgba(11,36,30,.42);
  opacity:0;visibility:hidden;transition:opacity .24s var(--ease),visibility .24s var(--ease);
}
.drawer{
  position:fixed;top:0;right:0;bottom:0;z-index:130;
  width:86vw;max-width:380px;background:var(--ivory);
  transform:translateX(100%);transition:transform .28s var(--ease);
  display:flex;flex-direction:column;padding:24px;
}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;}
.drawer-close{width:40px;height:40px;border:1px solid var(--line-strong);border-radius:var(--r-btn);background:transparent;cursor:pointer;line-height:1;}
.drawer-link{font-size:20px;font-weight:600;line-height:56px;border-bottom:1px solid var(--line);color:var(--text);}
.drawer-link.is-active{color:var(--amber);}
.drawer-cta{margin-top:auto;padding-top:24px;}
body.is-drawer-open{overflow:hidden;}
body.is-drawer-open .drawer{transform:translateX(0);}
body.is-drawer-open .drawer-mask{opacity:1;visibility:visible;}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .container{padding:0 32px;}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:0;}
  .article-aside{display:none;}
}
@media (max-width:1023px){
  .container{padding:0 24px;}
  :root{--header-h:60px;}
  .nav-main,.nav-actions{display:none;}
  .nav-toggle{display:block;}
  .page-hero{padding:100px 0 44px;}
  .article-body{font-size:16px;line-height:1.85;}
  .article-body h2{font-size:22px;}
  .article-body h3{font-size:18px;}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .brand-sub{font-size:11px;}
  .page-hero{padding:92px 0 36px;}
  .breadcrumb .current{max-width:100%;white-space:normal;}
  .article-title{font-size:26px;}
  .article-section{padding:48px 0 64px;}
  .related-grid{grid-template-columns:minmax(0,1fr);}
  .related-section{padding:0 0 64px;}
  .cta-band{padding:48px 0;}
  .cta-band h2{font-size:24px;}
  .cta-band .cta-sub{font-size:16px;}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:28px;}
  .footer-bottom{margin-top:36px;}
}
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{animation:none!important;transition:none!important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category1 */
:root{
  --c-primary:#12362E;
  --c-primary-dark:#0B241E;
  --c-accent:#C96A24;
  --c-accent-soft:#F2E4D6;
  --c-bg:#F7F5F0;
  --c-bg-alt:#EFECE5;
  --c-card:#FFFFFF;
  --c-text:#16191A;
  --c-text-2:#4A5250;
  --c-text-3:#8A908D;
  --c-line:#E2DED5;
  --c-line-strong:#C9C3B6;
  --c-success:#2F7A55;
  --c-warn:#B4761F;
  --c-error:#A63B2B;
  --c-info:#2C5F76;
  --r-btn:4px;
  --r-input:4px;
  --r-card:12px;
  --r-img:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(18,54,46,.04);
  --sh-2:0 10px 28px -12px rgba(18,54,46,.18);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  --font-mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  --ease:cubic-bezier(.22,.61,.36,1);
  --container:1200px;
  --sec-y:112px;
  --nav-h:72px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
h1,h2,h3,h4{line-height:1.28;letter-spacing:-.01em;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:3px;border-radius:2px;}
::selection{background:var(--c-accent-soft);color:var(--c-primary-dark);}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 40px;
}
.section{padding:var(--sec-y) 0;}
.section--alt{background:var(--c-bg-alt);}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;}
.num-tag{
  font-family:var(--font-mono);
  font-size:12px;
  line-height:1.2;
  letter-spacing:.12em;
  color:var(--c-accent);
  text-transform:uppercase;
}
.lead{font-size:17px;line-height:1.8;color:var(--c-text-2);max-width:68ch;}
.muted{color:var(--c-text-3);font-size:13px;line-height:1.7;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:48px;
  padding:0 24px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  line-height:1;
  transition:background-color 180ms var(--ease),border-color 180ms var(--ease),color 180ms var(--ease),transform 180ms var(--ease);
  white-space:nowrap;
}
.btn svg{width:16px;height:16px;transition:transform 180ms var(--ease);}
.btn:hover svg{transform:translateX(4px);}
.btn:active{transform:scale(.985);}
.btn--primary{background:var(--c-primary);color:var(--c-bg);}
.btn--primary:hover{background:var(--c-primary-dark);}
.btn--ghost{background:transparent;border:1px solid var(--c-line-strong);color:var(--c-primary);}
.btn--ghost:hover{border-color:var(--c-accent);background:var(--c-accent-soft);}
.btn--light{background:var(--c-bg);color:var(--c-primary);}
.btn--light:hover{background:#fff;}
.btn--sm{height:40px;padding:0 18px;font-size:14px;}

.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--c-accent);
  font-weight:600;
  font-size:15px;
  position:relative;
}
.link-arrow::after{
  content:"";
  position:absolute;
  left:0;
  right:18px;
  bottom:-4px;
  height:1px;
  background:currentColor;
  transform:scaleX(0);
  transform-origin:left;
  transition:transform 180ms var(--ease);
}
.link-arrow:hover::after{transform:scaleX(1);}
.link-arrow svg{width:15px;height:15px;transition:transform 180ms var(--ease);}
.link-arrow:hover svg{transform:translateX(4px);}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 12px;
  border-radius:var(--r-pill);
  background:var(--c-accent-soft);
  color:#8C4512;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
  line-height:1;
}
.badge--gray{background:var(--c-bg-alt);color:var(--c-text-2);}

/* ---------- Header ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:80;
  height:var(--nav-h);
  display:flex;
  align-items:center;
  transition:background-color 220ms var(--ease),border-color 220ms var(--ease),backdrop-filter 220ms var(--ease);
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled{
  background:rgba(247,245,240,.92);
  backdrop-filter:blur(8px) saturate(140%);
  -webkit-backdrop-filter:blur(8px) saturate(140%);
  border-bottom-color:var(--c-line);
}
.header-inner{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 40px;
  display:flex;
  align-items:center;
  gap:32px;
}
.brand{
  display:flex;
  align-items:center;
  gap:12px;
  flex-shrink:0;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-mark{
  font-family:var(--font-mono);
  font-size:20px;
  font-weight:700;
  letter-spacing:.04em;
  color:var(--c-bg);
  transition:color 220ms var(--ease);
}
.brand-sub{
  font-size:12px;
  color:rgba(247,245,240,.72);
  letter-spacing:.02em;
  transition:color 220ms var(--ease);
}
.brand-divider{
  width:1px;
  height:28px;
  background:rgba(247,245,240,.28);
  transition:background-color 220ms var(--ease);
}
.site-header.is-scrolled .brand-mark{color:var(--c-primary);}
.site-header.is-scrolled .brand-sub{color:var(--c-text-3);}
.site-header.is-scrolled .brand-divider{background:var(--c-line);}

.nav-main{
  display:flex;
  align-items:center;
  gap:28px;
  margin-left:12px;
}
.nav-link{
  position:relative;
  font-size:15px;
  font-weight:500;
  color:rgba(247,245,240,.88);
  padding:6px 0;
  transition:color 180ms var(--ease);
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;
  background:var(--c-accent);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform 180ms var(--ease);
}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{font-weight:600;color:#fff;}
.nav-link.is-active::after{transform:scaleX(1);}
.site-header.is-scrolled .nav-link{color:var(--c-text-2);}
.site-header.is-scrolled .nav-link.is-active{color:var(--c-primary);}

.header-actions{
  margin-left:auto;
  display:flex;
  align-items:center;
  gap:20px;
}
.header-link{
  font-size:15px;
  font-weight:500;
  color:rgba(247,245,240,.88);
  position:relative;
  transition:color 180ms var(--ease);
}
.header-link::after{
  content:"";
  position:absolute;left:0;right:0;bottom:-4px;height:1px;
  background:currentColor;transform:scaleX(0);transform-origin:left;
  transition:transform 180ms var(--ease);
}
.header-link:hover::after{transform:scaleX(1);}
.site-header.is-scrolled .header-link{color:var(--c-text-2);}
.header-actions .btn--primary{
  background:var(--c-accent);
}
.header-actions .btn--primary:hover{background:#A8541A;}

.nav-toggle{
  display:none;
  width:44px;height:44px;
  align-items:center;
  justify-content:center;
  border-radius:var(--r-btn);
  margin-left:auto;
}
.nav-toggle span{display:block;position:relative;width:24px;height:2px;background:#fff;transition:background-color 220ms var(--ease);}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:24px;height:2px;background:#fff;transition:transform 220ms var(--ease),background-color 220ms var(--ease);
}
.nav-toggle span::before{top:-7px;}
.nav-toggle span::after{top:7px;}
.site-header.is-scrolled .nav-toggle span,
.site-header.is-scrolled .nav-toggle span::before,
.site-header.is-scrolled .nav-toggle span::after{background:var(--c-primary);}

/* ---------- 抽屉 ---------- */
.drawer-mask{
  position:fixed;inset:0;
  background:rgba(11,36,30,.42);
  opacity:0;visibility:hidden;
  transition:opacity 220ms var(--ease),visibility 220ms var(--ease);
  z-index:90;
}
.drawer{
  position:fixed;
  top:0;right:0;
  width:86vw;
  max-width:380px;
  height:100%;
  background:var(--c-bg);
  z-index:100;
  transform:translateX(100%);
  transition:transform 260ms var(--ease);
  display:flex;
  flex-direction:column;
  padding:24px 0 0;
  box-shadow:-12px 0 32px -20px rgba(11,36,30,.4);
}
body.drawer-open .drawer{transform:translateX(0);}
body.drawer-open .drawer-mask{opacity:1;visibility:visible;}
body.drawer-open{overflow:hidden;}
.drawer-head{
  display:flex;align-items:center;justify-content:space-between;
  padding:0 24px 20px;
  border-bottom:1px solid var(--c-line);
}
.drawer-close{
  width:40px;height:40px;display:flex;align-items:center;justify-content:center;
  border:1px solid var(--c-line);border-radius:var(--r-btn);color:var(--c-primary);
}
.drawer-nav{display:flex;flex-direction:column;padding:8px 0;overflow-y:auto;}
.drawer-nav a{
  display:flex;align-items:center;justify-content:space-between;
  padding:0 24px;
  height:56px;
  font-size:20px;
  font-weight:600;
  border-bottom:1px solid var(--c-line);
  color:var(--c-text);
}
.drawer-nav a.is-active{color:var(--c-primary);}
.drawer-nav a svg{width:16px;height:16px;color:var(--c-text-3);}
.drawer-foot{margin-top:auto;padding:20px 24px 28px;border-top:1px solid var(--c-line);}
.drawer-foot .btn{width:100%;justify-content:center;}

/* ---------- 内页 Hero ---------- */
.page-hero{
  position:relative;
  padding:calc(var(--nav-h) + 72px) 0 88px;
  background:var(--c-primary-dark);
  color:var(--c-bg);
  overflow:hidden;
}
.page-hero::before{
  content:"";
  position:absolute;inset:0;
  background-image:url(/assets/images/backpic/back-2.webp);
  background-size:cover;
  background-position:center;
  opacity:.34;
}
.page-hero::after{
  content:"";
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(247,245,240,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(247,245,240,.06) 1px,transparent 1px);
  background-size:56px 56px;
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:2;}
.crumbs{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:14px;
  color:rgba(247,245,240,.7);
  margin-bottom:28px;
}
.crumbs .sep{font-family:var(--font-mono);color:rgba(247,245,240,.4);}
.crumbs a:hover{color:#fff;}
.page-hero h1{
  font-size:clamp(30px,4vw,52px);
  font-weight:800;
  letter-spacing:-.02em;
  line-height:1.14;
  max-width:20ch;
}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:22px;}
.hero-badges .badge{background:rgba(201,106,36,.9);color:#fff;}
.hero-badges .badge--gray{background:rgba(247,245,240,.14);color:rgba(247,245,240,.9);}
.page-hero .lead{
  color:rgba(247,245,240,.82);
  margin-top:22px;
  max-width:60ch;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:36px;}
.hero-actions .btn--ghost{border-color:rgba(247,245,240,.42);color:var(--c-bg);}
.hero-actions .btn--ghost:hover{background:rgba(247,245,240,.1);border-color:var(--c-bg);}
.hero-actions .btn--light{background:var(--c-bg);color:var(--c-primary);}

.hero-metrics{
  margin-top:64px;
  padding-top:28px;
  border-top:1px solid rgba(247,245,240,.24);
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
}
.hero-metrics .metric-num{
  font-family:var(--font-mono);
  font-size:28px;
  font-weight:700;
  letter-spacing:-.01em;
  color:#fff;
}
.hero-metrics .metric-desc{
  margin-top:6px;
  font-size:13px;
  line-height:1.6;
  color:rgba(247,245,240,.68);
}

/* ---------- 板块标题 ---------- */
.sec-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:32px;
  margin-bottom:40px;
  flex-wrap:wrap;
}
.sec-head h2{
  font-size:clamp(24px,2.8vw,34px);
  font-weight:700;
  letter-spacing:-.01em;
  max-width:24ch;
}
.sec-head .sec-sub{
  margin-top:12px;
  color:var(--c-text-2);
  font-size:16px;
  max-width:56ch;
}

/* ---------- 模块：侧栏锚点 + 内容 ---------- */
.module-layout{
  display:grid;
  grid-template-columns:240px minmax(0,1fr);
  gap:64px;
  align-items:start;
}
.anchor-rail{
  position:sticky;
  top:calc(var(--nav-h) + 32px);
  align-self:start;
}
.rail-title{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.12em;
  color:var(--c-text-3);
  margin-bottom:16px;
}
.rail-nav{display:flex;flex-direction:column;}
.rail-link{
  position:relative;
  display:flex;
  align-items:center;
  gap:10px;
  padding:12px 0 12px 14px;
  font-size:14px;
  color:var(--c-text-2);
  border-bottom:1px solid var(--c-line);
  transition:color 180ms var(--ease),background-color 180ms var(--ease);
}
.rail-link .mono{font-size:12px;color:var(--c-text-3);letter-spacing:.08em;}
.rail-link::before{
  content:"";
  position:absolute;
  left:0;top:8px;bottom:8px;
  width:2px;
  background:var(--c-accent);
  transform:scaleY(0);
  transform-origin:top;
  transition:transform 200ms var(--ease);
}
.rail-link:hover{color:var(--c-primary);}
.rail-link.is-active{color:var(--c-primary);font-weight:600;}
.rail-link.is-active::before{transform:scaleY(1);}
.rail-link.is-active .mono{color:var(--c-accent);}

.module-body{display:flex;flex-direction:column;}
.module-item{
  padding:0 0 72px;
  margin-bottom:72px;
  border-bottom:1px solid var(--c-line);
  scroll-margin-top:calc(var(--nav-h) + 24px);
}
.module-item:last-child{border-bottom:0;padding-bottom:0;margin-bottom:0;}
.module-inner{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,400px);
  gap:48px;
  align-items:start;
}
.module-item:nth-child(even) .module-inner{grid-template-columns:minmax(0,400px) minmax(0,1fr);}
.module-item:nth-child(even) .module-media{order:-1;}
.module-no{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.12em;
  color:var(--c-accent);
  display:block;
  margin-bottom:14px;
}
.module-item h2{
  font-size:clamp(21px,2.2vw,27px);
  font-weight:700;
  margin-bottom:18px;
}
.module-item p{
  color:var(--c-text-2);
  font-size:16px;
  margin-bottom:14px;
  max-width:66ch;
}
.cap-list{
  margin-top:22px;
  display:flex;
  flex-direction:column;
  gap:12px;
}
.cap-list li{
  position:relative;
  padding-left:24px;
  font-size:15px;
  color:var(--c-text);
  line-height:1.7;
}
.cap-list li::before{
  content:"";
  position:absolute;
  left:0;top:12px;
  width:12px;height:1px;
  background:var(--c-line-strong);
}
.module-media{
  border-radius:var(--r-img);
  overflow:hidden;
  background:var(--c-bg-alt);
  aspect-ratio:4/3;
  border:1px solid var(--c-line);
}
.module-media img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform 420ms var(--ease);
}
.module-item:hover .module-media img{transform:scale(1.03);}

/* ---------- 自检清单 ---------- */
.check-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.check-card{
  background:var(--c-card);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:28px 24px;
  box-shadow:var(--sh-1);
  transition:transform 200ms var(--ease),border-color 200ms var(--ease),box-shadow 200ms var(--ease);
}
.check-card:hover{transform:translateY(-2px);border-color:var(--c-line-strong);box-shadow:var(--sh-2);}
.check-card h3{font-size:19px;font-weight:600;margin:14px 0 10px;}
.check-card p{color:var(--c-text-2);font-size:15px;}

/* ---------- 流程 ---------- */
.steps{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:0;
  border-top:1px solid var(--c-line);
}
.step{
  padding:32px 28px 8px 0;
  border-right:1px solid var(--c-line);
}
.step:last-child{border-right:0;padding-right:0;}
.step .step-no{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.12em;
  color:var(--c-accent);
}
.step h3{font-size:20px;font-weight:600;margin:14px 0 12px;}
.step p{color:var(--c-text-2);font-size:15px;}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--c-line);max-width:880px;}
.faq-item{border-bottom:1px solid var(--c-line);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  text-align:left;
  padding:22px 0;
  font-size:17px;
  font-weight:600;
  color:var(--c-text);
  transition:color 180ms var(--ease);
}
.faq-q:hover{color:var(--c-primary);}
.faq-icon{
  flex-shrink:0;
  width:20px;height:20px;
  color:var(--c-accent);
  transition:transform 240ms var(--ease);
}
.faq-item.is-open .faq-icon{transform:rotate(45deg);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height 320ms var(--ease);
}
.faq-a-inner{
  border-left:2px solid var(--c-accent);
  padding:0 0 24px 18px;
}
.faq-a-inner p{color:var(--c-text-2);font-size:16px;max-width:64ch;}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--c-primary);
  color:var(--c-bg);
  border-radius:var(--r-card);
  padding:64px 56px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:40px;
  flex-wrap:wrap;
}
.cta-band h2{
  font-size:clamp(24px,2.6vw,32px);
  font-weight:700;
  letter-spacing:-.01em;
}
.cta-band .cta-sub{
  margin-top:12px;
  font-size:16px;
  color:rgba(247,245,240,.76);
  max-width:52ch;
}
.cta-note{
  margin-top:18px;
  font-size:13px;
  color:rgba(247,245,240,.6);
}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--c-primary-dark);
  color:rgba(247,245,240,.78);
  padding:72px 0 28px;
  margin-top:var(--sec-y);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:48px;
  border-bottom:1px solid rgba(247,245,240,.16);
}
.footer-brand{display:flex;flex-direction:column;align-items:flex-start;gap:4px;}
.footer-brand .brand-mark{font-size:22px;color:#fff;}
.footer-brand .brand-sub{font-size:12px;color:rgba(247,245,240,.6);}
.footer-brand p{margin-top:18px;font-size:14px;line-height:1.8;color:rgba(247,245,240,.7);max-width:34ch;}
.footer-contact{font-family:var(--font-mono);font-size:13px;color:rgba(247,245,240,.62);}
.footer-col h4{
  font-size:13px;
  font-family:var(--font-mono);
  letter-spacing:.1em;
  color:rgba(247,245,240,.55);
  font-weight:500;
  margin-bottom:18px;
}
.footer-col a{
  display:block;
  font-size:14px;
  padding:7px 0;
  color:rgba(247,245,240,.82);
  transition:color 180ms var(--ease),transform 180ms var(--ease);
}
.footer-col a:hover{color:#fff;transform:translateX(3px);}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  padding-top:24px;
  font-size:13px;
  color:rgba(247,245,240,.6);
  flex-wrap:wrap;
}
.to-top{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:13px;
  color:rgba(247,245,240,.8);
}
.to-top svg{width:14px;height:14px;transition:transform 180ms var(--ease);}
.to-top:hover{color:#fff;}
.to-top:hover svg{transform:translateY(-3px);}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(14px);transition:opacity 420ms var(--ease),transform 420ms var(--ease);}
.reveal.is-visible{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container,.header-inner{padding:0 32px;}
  :root{--sec-y:88px;}
  .module-layout{gap:48px;}
}
@media (max-width:1023px){
  :root{--nav-h:60px;--sec-y:88px;}
  .container,.header-inner{padding:0 24px;}
  .nav-main,.header-actions{display:none;}
  .nav-toggle{display:flex;}
  .hero-metrics{grid-template-columns:repeat(2,1fr);gap:20px;}
  .module-layout{grid-template-columns:1fr;gap:28px;}
  .anchor-rail{
    position:sticky;
    top:var(--nav-h);
    z-index:20;
    background:var(--c-bg);
    padding:12px 0;
    margin-bottom:8px;
    border-bottom:1px solid var(--c-line);
  }
  .rail-title{display:none;}
  .rail-nav{
    flex-direction:row;
    gap:10px;
    overflow-x:auto;
    padding-bottom:4px;
    scrollbar-width:none;
  }
  .rail-nav::-webkit-scrollbar{display:none;}
  .rail-link{
    flex:0 0 auto;
    white-space:nowrap;
    padding:9px 16px;
    border:1px solid var(--c-line);
    border-radius:var(--r-pill);
    background:var(--c-card);
  }
  .rail-link::before{display:none;}
  .rail-link.is-active{background:var(--c-accent-soft);border-color:var(--c-line-strong);}
  .module-inner,
  .module-item:nth-child(even) .module-inner{grid-template-columns:1fr;gap:28px;}
  .module-item:nth-child(even) .module-media{order:0;}
  .check-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .steps{grid-template-columns:1fr;}
  .step{border-right:0;border-bottom:1px solid var(--c-line);padding:28px 0;}
  .step:last-child{border-bottom:0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-band{padding:48px 32px;}
}
@media (max-width:767px){
  :root{--sec-y:64px;}
  .container,.header-inner{padding:0 20px;}
  body{font-size:15px;}
  .page-hero{padding:calc(var(--nav-h) + 48px) 0 64px;}
  .hero-metrics{grid-template-columns:1fr 1fr;gap:18px;margin-top:44px;}
  .hero-metrics .metric-num{font-size:22px;}
  .sec-head{margin-bottom:28px;}
  .module-item{padding-bottom:56px;margin-bottom:56px;}
  .check-grid{grid-template-columns:1fr;}
  .faq-q{font-size:16px;padding:18px 0;}
  .cta-band{padding:40px 24px;border-radius:12px;}
  .cta-band .btn{width:100%;justify-content:center;}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:12px;}
  .site-footer{padding:56px 0 24px;}
}
@media (max-width:520px){
  .hero-actions .btn{width:100%;justify-content:center;}
  .hero-metrics{grid-template-columns:1fr;}
  .page-hero h1{max-width:none;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category2 */
:root{
  --ink:#12362E;
  --ink-deep:#0B241E;
  --accent:#C96A24;
  --accent-soft:#F2E4D6;
  --bg:#F7F5F0;
  --bg-alt:#EFECE5;
  --card:#FFFFFF;
  --t1:#16191A;
  --t2:#4A5250;
  --t3:#8A908D;
  --line:#E2DED5;
  --line-strong:#C9C3B6;
  --ok:#2F7A55;
  --warn:#B4761F;
  --err:#A63B2B;
  --info:#2C5F76;
  --r-btn:4px;
  --r-card:12px;
  --r-img:10px;
  --sh1:0 1px 2px rgba(18,54,46,.04);
  --sh2:0 10px 28px -12px rgba(18,54,46,.18);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  --font-mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  --sec:112px;
  --header-h:72px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  color:var(--t1);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.nav-open{overflow:hidden}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}
h1,h2,h3,h4,p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
figure{margin:0}
svg{display:block}
.mono{font-family:var(--font-mono);font-size:12px;letter-spacing:.12em;line-height:1.2}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 40px}
.section{padding:var(--sec) 0}
.section-tight{padding:56px 0 0}
.section-alt{background:var(--bg-alt)}
[id]{scroll-margin-top:96px}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--ink);color:#F7F5F0;padding:10px 18px;border-radius:0 0 var(--r-btn) 0;z-index:300}
.skip-link:focus{left:0}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:2px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  cursor:pointer;white-space:nowrap;
  transition:background 180ms var(--ease),border-color 180ms var(--ease),color 180ms var(--ease),transform 180ms var(--ease);
}
.btn-primary{background:var(--ink);color:#F7F5F0}
.btn-primary:hover{background:var(--ink-deep)}
.btn-primary:active{transform:scale(.985)}
.btn-primary .arrow{transition:transform 180ms var(--ease)}
.btn-primary:hover .arrow{transform:translateX(4px)}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--ink)}
.btn-ghost:hover{border-color:var(--accent);background:var(--accent-soft)}
.btn-ghost:active{transform:scale(.985)}
.btn-invert{background:#F7F5F0;color:var(--ink-deep)}
.btn-invert:hover{background:#FFFFFF}
.btn-invert:active{transform:scale(.985)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;pointer-events:none}
.link-more{
  display:inline-flex;align-items:center;gap:6px;color:var(--accent);
  font-size:15px;font-weight:600;position:relative;padding-bottom:2px;
}
.link-more::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:var(--accent);transform:scaleX(0);transform-origin:left;
  transition:transform 180ms var(--ease);
}
.link-more:hover::after{transform:scaleX(1)}
.link-more svg{width:15px;height:15px;transition:transform 180ms var(--ease)}
.link-more:hover svg{transform:translateX(4px)}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;
  border-radius:999px;background:var(--accent-soft);color:var(--accent);
  font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;
}
.badge-plain{background:var(--bg-alt);color:var(--t2)}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;height:var(--header-h);z-index:100;
  border-bottom:1px solid transparent;
  transition:background 220ms var(--ease),border-color 220ms var(--ease),color 220ms var(--ease);
}
.site-header:not(.is-solid){color:#F7F5F0}
.site-header.is-solid{
  background:rgba(247,245,240,.93);
  -webkit-backdrop-filter:blur(8px) saturate(140%);
  backdrop-filter:blur(8px) saturate(140%);
  border-bottom-color:var(--line);
  color:var(--t1);
}
.site-header .container{height:100%}
.header-inner{display:flex;align-items:center;gap:34px;height:100%}
.brand{display:flex;align-items:center;gap:10px;color:inherit;flex:0 0 auto}
.brand-mark{font-family:var(--font-mono);font-size:20px;font-weight:700;letter-spacing:.02em}
.brand-divider{width:1px;height:20px;background:currentColor;opacity:.3}
.brand-sub{font-size:12px;font-weight:400;opacity:.72}
.nav-main{display:flex;align-items:center;gap:30px}
.nav-link{
  position:relative;font-size:15px;font-weight:500;padding:8px 0;opacity:.86;
  transition:opacity 180ms var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:2px;height:2px;
  background:var(--accent);transform:scaleX(0);transform-origin:left;
  transition:transform 180ms var(--ease);
}
.nav-link:hover{opacity:1}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{font-weight:600;opacity:1}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-link.is-active::before{
  content:"";position:absolute;left:-12px;top:50%;transform:translateY(-50%);
  width:4px;height:4px;border-radius:50%;background:var(--accent);
}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:20px}
.site-header:not(.is-solid) .btn-primary{background:#F7F5F0;color:var(--ink-deep)}
.site-header:not(.is-solid) .btn-primary:hover{background:#FFFFFF}
.link-plain{
  font-size:14px;opacity:.86;border-bottom:1px solid transparent;
  transition:opacity 180ms var(--ease),border-color 180ms var(--ease);
}
.link-plain:hover{opacity:1;border-bottom-color:var(--accent)}
.nav-toggle{
  display:none;margin-left:auto;width:42px;height:42px;padding:0;
  background:transparent;border:0;cursor:pointer;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.nav-toggle span{display:block;width:22px;height:2px;background:currentColor;border-radius:2px}
.nav-mask{
  position:fixed;inset:0;background:rgba(11,36,30,.42);z-index:200;
  opacity:0;pointer-events:none;transition:opacity 240ms var(--ease);
}
body.nav-open .nav-mask{opacity:1;pointer-events:auto}
.nav-drawer{
  position:fixed;top:0;right:0;bottom:0;width:86vw;max-width:380px;z-index:220;
  background:var(--bg);display:flex;flex-direction:column;
  transform:translateX(102%);transition:transform 320ms var(--ease);
  box-shadow:-16px 0 40px -24px rgba(11,36,30,.45);
}
body.nav-open .nav-drawer{transform:translateX(0)}
.drawer-head{
  display:flex;align-items:center;gap:10px;height:60px;padding:0 20px;
  border-bottom:1px solid var(--line);
}
.drawer-close{
  margin-left:auto;width:36px;height:36px;border:1px solid var(--line);
  background:transparent;border-radius:var(--r-btn);font-size:20px;line-height:1;cursor:pointer;
}
.drawer-nav{display:flex;flex-direction:column;padding:8px 20px}
.drawer-nav a{
  font-size:20px;font-weight:600;line-height:56px;
  border-bottom:1px solid var(--line);color:var(--t1);
}
.drawer-nav a.is-active{color:var(--accent)}
.drawer-foot{margin-top:auto;padding:20px;border-top:1px solid var(--line)}

/* ---------- 内页首屏 ---------- */
.page-hero{
  position:relative;background:var(--ink);color:#F7F5F0;
  padding-top:var(--header-h);overflow:hidden;
}
.hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;opacity:.22;
}
.hero-bg::after{
  content:"";position:absolute;inset:0;opacity:.06;
  background-image:linear-gradient(rgba(247,245,240,.6) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(247,245,240,.6) 1px,transparent 1px);
  background-size:48px 48px;
}
.hero-inner{position:relative;z-index:1;padding:52px 0 68px}
.breadcrumb{
  display:flex;align-items:center;gap:8px;font-size:14px;
  color:rgba(247,245,240,.66);margin-bottom:26px;
}
.breadcrumb a:hover{color:#F7F5F0}
.breadcrumb .sep{font-family:var(--font-mono);opacity:.55}
.hero-eyebrow{
  font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;
  color:#E0A671;
}
.page-hero h1{
  font-size:52px;line-height:1.1;font-weight:800;letter-spacing:-.02em;
  margin:16px 0 20px;max-width:18em;
}
.hero-lead{
  font-size:18px;line-height:1.75;color:rgba(247,245,240,.82);max-width:64ch;
}
.hero-meta{
  display:flex;gap:56px;flex-wrap:wrap;margin-top:42px;padding-top:26px;
  border-top:1px solid rgba(247,245,240,.18);
}
.hero-meta .num{
  font-family:var(--font-mono);font-size:26px;font-weight:700;
  color:#F7F5F0;display:block;letter-spacing:.02em;
}
.hero-meta .txt{font-size:13px;color:rgba(247,245,240,.66);margin-top:6px;display:block}
.hero-inner>*{animation:riseIn 420ms var(--ease) both}
.hero-inner>*:nth-child(2){animation-delay:70ms}
.hero-inner>*:nth-child(3){animation-delay:140ms}
.hero-inner>*:nth-child(4){animation-delay:210ms}
.hero-inner>*:nth-child(5){animation-delay:280ms}
@keyframes riseIn{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}

/* ---------- 场景速览胶囊 ---------- */
.scene-tabs{display:flex;gap:12px;overflow-x:auto;padding:4px 0 8px;scrollbar-width:thin}
.scene-tabs a{
  display:inline-flex;align-items:center;gap:10px;height:44px;padding:0 18px;
  background:var(--card);border:1px solid var(--line);border-radius:999px;
  font-size:14px;color:var(--t2);white-space:nowrap;
  transition:border-color 180ms var(--ease),background 180ms var(--ease),color 180ms var(--ease);
}
.scene-tabs a .mono{color:var(--accent)}
.scene-tabs a:hover{border-color:var(--line-strong);background:var(--bg-alt);color:var(--t1)}
.scene-tabs a.is-current{background:var(--accent-soft);border-color:var(--accent);color:var(--ink)}

/* ---------- 板块标题 ---------- */
.sec-head{display:flex;justify-content:space-between;align-items:flex-end;gap:32px;flex-wrap:wrap}
.sec-head h2{
  font-size:34px;line-height:1.24;font-weight:700;letter-spacing:-.01em;
  max-width:22ch;
}
.sec-head p{margin-top:16px;max-width:64ch;color:var(--t2);font-size:16px}
.sec-rule{width:56px;height:3px;background:var(--accent);margin-bottom:22px}

/* ---------- 时间轴 ---------- */
.timeline{position:relative;margin-top:56px}
.timeline::before{
  content:"";position:absolute;left:31px;top:6px;bottom:6px;width:1px;background:var(--line);
}
.tl-item{
  display:grid;grid-template-columns:64px minmax(0,1fr);gap:40px;
  padding-bottom:88px;position:relative;
}
.tl-item:last-child{padding-bottom:0}
.tl-marker{padding-top:2px}
.tl-num{
  display:flex;align-items:center;justify-content:center;width:64px;height:26px;
  background:var(--bg);font-family:var(--font-mono);font-size:12px;
  letter-spacing:.12em;color:var(--accent);position:relative;z-index:1;
}
.tl-body{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,400px);
  gap:44px;align-items:start;
}
.tl-tags{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:16px}
.tl-body h3{font-size:24px;line-height:1.4;font-weight:600;margin-bottom:16px}
.tl-body p{color:var(--t2);margin-bottom:14px;max-width:66ch}
.tl-stats{
  display:grid;grid-template-columns:1fr 1fr;gap:24px;
  margin-top:24px;padding-top:22px;border-top:1px solid var(--line);
}
.stat-num{
  font-family:var(--font-mono);font-size:24px;font-weight:700;
  color:var(--ink);display:block;letter-spacing:.01em;
}
.stat-txt{display:block;font-size:13px;color:var(--t2);margin-top:6px;line-height:1.7}
.tl-figure img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-img);
  background:var(--bg-alt);
}
.tl-figure figcaption{
  font-size:13px;color:var(--t3);text-align:center;margin-top:10px;
}
.tl-figure{
  transition:transform 240ms var(--ease),box-shadow 240ms var(--ease);
}
.tl-figure:hover{transform:translateY(-2px)}
.tl-figure:hover img{border:1px solid var(--line-strong)}

/* ---------- 准备清单 ---------- */
.prep-grid{display:grid;grid-template-columns:minmax(0,340px) minmax(0,1fr);gap:72px}
.prep-side h2{font-size:34px;line-height:1.24;font-weight:700;letter-spacing:-.01em;margin-bottom:18px}
.prep-side p{color:var(--t2);max-width:38ch}
.prep-side .link-more{margin-top:26px}
.prep-list{border-top:1px solid var(--line)}
.prep-list li{
  display:grid;grid-template-columns:60px minmax(0,1fr);gap:20px;
  padding:22px 18px;border-bottom:1px solid var(--line);
  transition:background 180ms var(--ease);
}
.prep-list li:hover{background:var(--bg-alt)}
.prep-list .mono{color:var(--accent);padding-top:4px}
.prep-list h4{font-size:17px;font-weight:600;margin-bottom:6px}
.prep-list p{font-size:15px;color:var(--t2);max-width:62ch}

/* ---------- 常见问题 ---------- */
.faq-list{margin-top:44px;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:24px;
  padding:24px 0;font-size:17px;font-weight:600;cursor:pointer;
  list-style:none;transition:color 180ms var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--accent)}
.faq-icon{
  flex:0 0 auto;width:22px;height:22px;display:grid;place-items:center;
  color:var(--accent);transition:transform 220ms var(--ease);
}
.faq-icon svg{width:16px;height:16px}
.faq-item[open] .faq-icon{transform:rotate(45deg)}
.faq-answer{
  margin:0 0 26px 2px;padding:2px 0 2px 20px;
  border-left:2px solid var(--accent);
}
.faq-answer p{color:var(--t2);max-width:68ch}
.faq-answer p+p{margin-top:12px}

/* ---------- 结尾 CTA ---------- */
.cta-band{background:var(--ink);color:#F7F5F0}
.cta-band .container{
  display:flex;align-items:center;justify-content:space-between;gap:44px;
  padding-top:72px;padding-bottom:72px;flex-wrap:wrap;
}
.cta-band h2{font-size:32px;line-height:1.3;font-weight:700;letter-spacing:-.01em}
.cta-band p{margin-top:12px;font-size:16px;font-weight:400;color:rgba(247,245,240,.78);max-width:56ch}
.cta-side{display:flex;flex-direction:column;align-items:flex-start;gap:12px}
.cta-note{font-size:13px;color:rgba(247,245,240,.6)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-deep);color:rgba(247,245,240,.78);padding:76px 0 32px}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:48px}
.footer-brand .brand-mark{
  display:block;font-family:var(--font-mono);font-size:20px;font-weight:700;
  color:#F7F5F0;letter-spacing:.02em;
}
.footer-brand .brand-sub{
  display:block;font-size:12px;color:rgba(247,245,240,.58);margin-top:6px;
  padding-left:10px;border-left:1px solid rgba(247,245,240,.24);
}
.footer-brand p{margin-top:20px;font-size:14px;line-height:1.8;max-width:40ch}
.footer-contact{margin-top:14px !important;color:rgba(247,245,240,.58) !important}
.footer-col h4{
  font-size:14px;font-weight:600;color:#F7F5F0;letter-spacing:.02em;margin-bottom:18px;
}
.footer-col a{
  display:block;font-size:14px;padding:7px 0;color:rgba(247,245,240,.72);
  transition:color 180ms var(--ease),transform 180ms var(--ease);
}
.footer-col a:hover{color:#F7F5F0;transform:translateX(2px)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  margin-top:60px;padding-top:24px;border-top:1px solid rgba(247,245,240,.14);
  font-size:13px;color:rgba(247,245,240,.55);
}
.to-top{display:inline-flex;align-items:center;gap:6px;color:rgba(247,245,240,.72)}
.to-top svg{width:16px;height:16px}
.to-top:hover{color:#F7F5F0}

/* ---------- 入场动效 ---------- */
[data-reveal]{opacity:0;transform:translateY(14px);transition:opacity 420ms var(--ease),transform 420ms var(--ease)}
[data-reveal].is-in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{padding:0 32px}
  :root{--sec:88px}
}
@media (max-width:1023px){
  .container{padding:0 24px}
  :root{--sec:72px;--header-h:60px}
  .nav-main,.header-actions{display:none}
  .nav-toggle{display:flex}
  .page-hero h1{font-size:38px}
  .hero-lead{font-size:16px}
  .hero-meta{gap:36px}
  .sec-head h2,.prep-side h2{font-size:28px}
  .tl-body{grid-template-columns:minmax(0,1fr);gap:28px}
  .tl-item{gap:28px;padding-bottom:64px}
  .prep-grid{grid-template-columns:minmax(0,1fr);gap:36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px}
  .cta-band .container{padding-top:56px;padding-bottom:56px}
  .cta-band h2{font-size:26px}
}
@media (max-width:767px){
  .container{padding:0 20px}
  :root{--sec:64px}
  .page-hero h1{font-size:34px;line-height:1.16}
  .hero-inner{padding:36px 0 52px}
  .hero-meta{gap:28px;margin-top:32px}
  .hero-meta .num{font-size:22px}
  .sec-head h2,.prep-side h2{font-size:26px}
  .timeline::before{left:11px}
  .tl-item{grid-template-columns:24px minmax(0,1fr);gap:16px;padding-bottom:56px}
  .tl-marker{padding-top:0}
  .tl-num{width:24px;height:22px;justify-content:flex-start;font-size:10px;letter-spacing:.08em}
  .tl-body h3{font-size:20px}
  .tl-stats{grid-template-columns:1fr;gap:16px}
  .prep-list li{grid-template-columns:40px minmax(0,1fr);gap:14px;padding:20px 12px}
  .faq-item summary{font-size:16px;padding:20px 0}
  .cta-band h2{font-size:24px}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{margin-top:40px}
}
@media (max-width:520px){
  .page-hero h1{font-size:30px}
  .hero-lead{font-size:15px}
  .btn{height:46px;padding:0 20px;font-size:14px}
  .scene-tabs a{height:40px;padding:0 14px;font-size:13px}
  .sec-head h2,.prep-side h2{font-size:23px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;animation-iteration-count:1 !important;
    transition-duration:.001ms !important;scroll-behavior:auto !important;
  }
  [data-reveal]{opacity:1;transform:none}
}