/* roulang page: index */
/* ============ 设计变量 ============ */
:root{
  --ink:#14110E;
  --ink-2:#241F1A;
  --bg:#F6F3EE;
  --paper:#FFFFFF;
  --accent:#C4472B;
  --accent-dark:#A9391F;
  --pine:#2F4A3B;
  --muted:#6B6259;
  --line:#E3DDD4;
  --line-dark:rgba(246,243,238,.16);
  --r-card:8px;
  --r-frame:12px;
  --r-btn:4px;
  --shadow-1:0 1px 2px rgba(20,17,14,.06);
  --shadow-2:0 18px 44px -26px rgba(20,17,14,.34);
  --container:1200px;
  --pad:32px;
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,"Times New Roman",serif;
  --sans:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
}
/* ============ 基础重置 ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer}
input,textarea,select{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-family:var(--serif);font-weight:700;letter-spacing:.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
figure{margin:0}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
::selection{background:rgba(196,71,43,.16)}
/* ============ 容器与通用 ============ */
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 var(--pad)}
.section{padding:clamp(56px,8vw,108px) 0}
.section--paper{background:var(--paper);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:44px}
.section-head h2{font-size:clamp(1.6rem,3vw,2.5rem);line-height:1.15}
.section-head .head-desc{margin-top:12px;color:var(--muted);font-size:15.5px;max-width:660px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.14em;color:var(--muted);
  border:1px solid var(--line);border-radius:999px;
  padding:6px 14px;background:rgba(255,255,255,.7);
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent)}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14.5px;position:relative;padding-bottom:3px;white-space:nowrap;color:var(--ink)}
.link-arrow::after{content:"";position:absolute;left:0;bottom:0;height:1px;width:100%;background:var(--accent);transform:scaleX(0);transform-origin:right;transition:transform .25s ease}
.link-arrow:hover::after{transform:scaleX(1);transform-origin:left}
.link-arrow i{font-style:normal;transition:transform .2s ease}
.link-arrow:hover i{transform:translateX(4px)}
/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 22px;border-radius:var(--r-btn);
  border:1px solid transparent;font-size:14.5px;font-weight:500;
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease;
}
.btn .arrow{transition:transform .18s ease;font-style:normal}
.btn:hover .arrow{transform:translateX(4px)}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-dark);color:#fff}
.btn-ghost{border-color:var(--line);color:var(--ink);background:transparent}
.btn-ghost:hover{background:var(--ink);color:var(--bg);border-color:var(--ink)}
.btn-dark{background:var(--ink);color:var(--bg)}
.btn-dark:hover{background:#000;color:#fff}
.btn:disabled,.btn[disabled]{opacity:.45;cursor:not-allowed}
/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:90;
  background:rgba(246,243,238,.9);
  -webkit-backdrop-filter:saturate(140%) blur(12px);
  backdrop-filter:saturate(140%) blur(12px);
  border-bottom:1px solid transparent;
  transition:border-color .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 1px 0 rgba(20,17,14,.02)}
.nav-inner{
  max-width:var(--container);margin:0 auto;padding:0 var(--pad);
  height:64px;display:flex;align-items:center;justify-content:space-between;gap:28px;
}
.brand{display:flex;align-items:center;gap:9px;font-family:var(--serif);font-weight:700;font-size:19px;letter-spacing:.02em;white-space:nowrap;color:var(--ink)}
.brand-kicker{
  font-family:var(--sans);font-size:10.5px;font-weight:500;letter-spacing:.2em;
  color:var(--muted);border-left:1px solid var(--line);padding-left:9px;line-height:1.2;
}
.brand:hover .brand-kicker{color:var(--accent)}
.nav-links{display:flex;align-items:center;gap:26px;font-size:14.5px;color:var(--muted)}
.nav-links a{position:relative;padding:8px 0;transition:color .18s ease}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--accent);
  transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.nav-links a:hover{color:var(--ink)}
.nav-links a:hover::after,.nav-links a.is-active::after{transform:scaleX(1)}
.nav-links a.is-active{color:var(--ink)}
.nav-right{display:flex;align-items:center;gap:10px}
.icon-btn{
  width:40px;height:40px;display:grid;place-items:center;
  border:1px solid var(--line);border-radius:var(--r-btn);background:var(--paper);
  color:var(--muted);transition:color .18s ease,border-color .18s ease,background .18s ease;
}
.icon-btn:hover{color:var(--ink);border-color:#CFC6BA}
.icon-btn svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round}
.burger{display:none}
/* 移动抽屉 */
.drawer{
  position:fixed;inset:0;z-index:200;background:var(--ink);color:var(--bg);
  display:flex;flex-direction:column;padding:18px 22px 32px;
  transform:translateX(101%);visibility:hidden;
  transition:transform .32s cubic-bezier(.4,0,.2,1),visibility .32s;
  overflow-y:auto;
}
.drawer.is-open{transform:none;visibility:visible}
.drawer-top{display:flex;align-items:center;justify-content:space-between;padding-bottom:18px;border-bottom:1px solid var(--line-dark)}
.drawer-brand{font-family:var(--serif);font-size:18px;font-weight:700;color:var(--bg)}
.drawer-close{width:40px;height:40px;display:grid;place-items:center;border:1px solid var(--line-dark);border-radius:var(--r-btn);color:var(--bg)}
.drawer-close svg{width:16px;height:16px;stroke:currentColor;stroke-width:1.6;fill:none;stroke-linecap:round}
.drawer-nav{display:flex;flex-direction:column;margin-top:18px}
.drawer-nav a{
  padding:16px 0;font-size:20px;font-family:var(--serif);font-weight:700;
  border-bottom:1px solid var(--line-dark);color:var(--bg);
  display:flex;align-items:center;justify-content:space-between;
}
.drawer-nav a span{font-family:var(--sans);font-size:11px;letter-spacing:.16em;color:rgba(246,243,238,.45);font-weight:400}
.drawer-nav a.is-active{color:var(--accent)}
.drawer-foot{margin-top:auto;padding-top:32px;font-size:13.5px;color:rgba(246,243,238,.6);line-height:1.9}
.drawer-foot strong{display:block;color:var(--bg);font-size:15px;margin-bottom:6px;font-weight:500}
/* ============ Hero ============ */
.hero{position:relative;padding:calc(64px + 44px) 0 clamp(48px,6vw,80px);overflow:hidden}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(760px 460px at 82% 18%,rgba(196,71,43,.07),transparent 68%);
}
.hero-grid{position:relative;display:grid;grid-template-columns:1.24fr 1fr;gap:clamp(32px,5vw,64px);align-items:center}
.hero-copy h1{
  font-size:clamp(2.1rem,4.4vw,3.6rem);
  line-height:1.14;font-weight:700;margin-top:22px;letter-spacing:.005em;
}
.hero-copy h1 em{font-style:normal;color:var(--accent)}
.hero-sub{margin-top:20px;font-size:clamp(15px,1.4vw,17px);color:var(--muted);max-width:560px;line-height:1.8}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}
.hero-stats{display:flex;flex-wrap:wrap;gap:clamp(24px,4vw,48px);margin-top:44px;padding-top:28px;border-top:1px solid var(--line)}
.stat-num{font-family:var(--serif);font-size:clamp(1.35rem,2vw,1.7rem);line-height:1.1;color:var(--ink)}
.stat-num b{font-weight:700}
.stat-label{font-size:12.5px;letter-spacing:.07em;color:var(--muted);margin-top:6px}
.hero-visual{position:relative;display:flex;justify-content:center;align-items:center}
.frame{
  position:relative;width:100%;max-width:316px;aspect-ratio:9/16;
  border-radius:var(--r-frame);overflow:hidden;background:var(--ink);
  box-shadow:var(--shadow-2);
}
.frame img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.frame:hover img{transform:scale(1.03)}
.frame::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(20,17,14,.05) 0%,rgba(20,17,14,0) 38%,rgba(20,17,14,.72) 100%)}
.play-mark{
  position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);
  width:56px;height:56px;border-radius:50%;z-index:2;
  border:1px solid rgba(255,255,255,.56);background:rgba(20,17,14,.32);
  display:grid;place-items:center;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);
  transition:background .2s ease,transform .2s ease;
}
.frame:hover .play-mark{background:rgba(196,71,43,.86);transform:translate(-50%,-50%) scale(1.06)}
.play-mark svg{width:15px;height:15px;fill:#fff;stroke:none;margin-left:2px}
.frame-bar{
  position:absolute;left:0;right:0;bottom:0;z-index:2;padding:16px 16px 14px;
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  color:#F6F3EE;font-size:11.5px;letter-spacing:.05em;
}
.frame-bar .dot{display:inline-block;width:5px;height:5px;border-radius:50%;background:var(--accent);margin-right:6px;vertical-align:middle}
.frame-mini{
  position:absolute;right:-4px;bottom:-26px;width:104px;aspect-ratio:3/4;z-index:3;
  border-radius:10px;overflow:hidden;border:3px solid var(--bg);box-shadow:var(--shadow-2);
  transition:transform .25s ease;
}
.frame-mini img{width:100%;height:100%;object-fit:cover}
.frame-mini:hover{transform:translateY(-4px)}
.hero-divider{height:1px;background:var(--line);margin-top:clamp(40px,6vw,72px)}
/* ============ 片段轨道 ============ */
.rail-wrap{position:relative;max-width:var(--container);margin:0 auto;padding:0 var(--pad)}
.rail{
  display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:4px 0 22px;cursor:grab;-webkit-overflow-scrolling:touch;
  scrollbar-width:thin;scrollbar-color:#CFC6BA transparent;
  -webkit-mask-image:linear-gradient(to right,#000 0,#000 94%,transparent 100%);
  mask-image:linear-gradient(to right,#000 0,#000 94%,transparent 100%);
}
.rail:active{cursor:grabbing}
.rail::-webkit-scrollbar{height:6px}
.rail::-webkit-scrollbar-thumb{background:#D8D0C5;border-radius:99px}
.clip{flex:0 0 clamp(232px,25%,300px);scroll-snap-align:start;min-width:232px}
.clip-thumb{position:relative;aspect-ratio:3/4;border-radius:var(--r-frame);overflow:hidden;background:#EDE8E1;border:1px solid var(--line)}
.clip-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.clip:hover .clip-thumb img{transform:scale(1.04)}
.clip-thumb .dur{
  position:absolute;right:10px;bottom:10px;z-index:2;
  font-size:11px;letter-spacing:.06em;color:#F6F3EE;
  background:rgba(20,17,14,.72);border-radius:3px;padding:2px 7px;
}
.clip:hover{transform:translateY(-2px)}
.clip{transition:transform .22s ease}
.clip h3{margin-top:14px;font-size:16px;line-height:1.45;font-family:var(--sans);font-weight:500;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.clip-meta{margin-top:8px;font-size:12.5px;color:var(--muted);display:flex;align-items:center;gap:8px}
.clip-meta .sep{width:3px;height:3px;border-radius:50%;background:var(--line);display:inline-block}
.tag{
  display:inline-flex;align-items:center;height:22px;padding:0 9px;border-radius:3px;
  font-size:11.5px;letter-spacing:.05em;background:rgba(47,74,59,.09);color:var(--pine);
}
/* ============ 种草清单 ============ */
.pick-list{border-top:1px solid var(--line)}
.pick{
  position:relative;display:flex;align-items:center;gap:clamp(18px,3vw,36px);
  padding:26px 20px;border-bottom:1px solid var(--line);transition:color .2s ease;
}
.pick::before{
  content:"";position:absolute;inset:0;z-index:0;
  background:linear-gradient(90deg,rgba(196,71,43,.055),rgba(196,71,43,0) 82%);
  transform:scaleX(0);transform-origin:left;transition:transform .32s cubic-bezier(.4,0,.2,1);
}
.pick:hover::before{transform:scaleX(1)}
.pick > *{position:relative;z-index:1}
.pick-index{
  font-family:var(--serif);font-weight:700;line-height:1;
  font-size:clamp(1.5rem,2.6vw,2.35rem);color:var(--accent);
  min-width:66px;letter-spacing:.02em;
}
.pick-body{flex:1;min-width:0}
.pick-body h3{font-size:clamp(1.02rem,1.5vw,1.22rem);line-height:1.4;font-family:var(--sans);font-weight:600}
.pick-body p{margin-top:7px;font-size:14.5px;color:var(--muted);line-height:1.7}
.pick-arrow{font-size:18px;color:var(--muted);transition:transform .22s ease,color .22s ease;flex:none}
.pick:hover .pick-arrow{transform:translateX(6px);color:var(--accent)}
/* ============ 资讯网格 ============ */
.post-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px}
.post-card{
  display:flex;flex-direction:column;background:var(--paper);
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
  box-shadow:var(--shadow-1);
}
.post-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#D6CDC1}
.post-cover{position:relative;aspect-ratio:16/10;overflow:hidden;background:#EDE8E1}
.post-cover img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.post-card:hover .post-cover img{transform:scale(1.04)}
.post-cover .post-cat{
  position:absolute;left:12px;top:12px;z-index:2;
  font-size:11.5px;letter-spacing:.06em;color:#F6F3EE;
  background:rgba(47,74,59,.88);border-radius:3px;padding:3px 9px;
}
.post-body{padding:20px 20px 22px;display:flex;flex-direction:column;flex:1}
.post-body h3{
  font-family:var(--sans);font-weight:600;font-size:16.5px;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-body h3 a:hover{color:var(--accent)}
.post-summary{
  margin-top:10px;font-size:14px;color:var(--muted);line-height:1.72;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-foot{
  margin-top:auto;padding-top:16px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  font-size:12.5px;color:var(--muted);
}
.empty-state{
  border:1px dashed var(--line);border-radius:var(--r-card);
  background:var(--paper);padding:56px 24px;text-align:center;color:var(--muted);
  grid-column:1 / -1;
}
.empty-state a{color:var(--accent);border-bottom:1px solid currentColor;padding-bottom:1px}
/* ============ 口碑条 ============ */
.voices{background:var(--ink);color:var(--bg);border-radius:0}
.voices .section-head h2{color:var(--bg)}
.voices .section-head .head-desc{color:rgba(246,243,238,.6)}
.voice-rail{
  display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:4px 0 20px;scrollbar-width:thin;
  -webkit-mask-image:linear-gradient(to right,#000 0,#000 95%,transparent 100%);
  mask-image:linear-gradient(to right,#000 0,#000 95%,transparent 100%);
}
.voice-rail::-webkit-scrollbar{height:6px}
.voice-rail::-webkit-scrollbar-thumb{background:rgba(246,243,238,.24);border-radius:99px}
.voice{
  flex:0 0 clamp(240px,26%,300px);min-width:240px;scroll-snap-align:start;
  background:rgba(246,243,238,.055);border:1px solid var(--line-dark);
  border-radius:var(--r-card);padding:24px 22px;
  transition:background .22s ease,border-color .22s ease,transform .22s ease;
}
.voice:hover{background:rgba(246,243,238,.09);border-color:rgba(246,243,238,.28);transform:translateY(-2px)}
.stars{display:flex;gap:3px;color:var(--accent);font-size:13px;letter-spacing:2px}
.voice p{margin-top:14px;font-size:14.8px;line-height:1.78;color:rgba(246,243,238,.92)}
.voice-from{margin-top:18px;padding-top:14px;border-top:1px solid var(--line-dark);font-size:12.5px;color:rgba(246,243,238,.55);letter-spacing:.04em}
/* ============ CTA 带 ============ */
.cta-band{padding:0 0 clamp(56px,8vw,100px)}
.cta-inner{
  background:var(--ink);border-radius:14px;padding:clamp(32px,5vw,56px);
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  position:relative;overflow:hidden;
}
.cta-inner::before{
  content:"";position:absolute;right:-80px;top:-90px;width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle,rgba(196,71,43,.34),transparent 68%);
}
.cta-inner h2{
  position:relative;color:var(--bg);font-size:clamp(1.5rem,2.6vw,2.15rem);line-height:1.24;max-width:640px;
}
.cta-inner .cta-sub{position:relative;margin-top:12px;font-size:14.5px;color:rgba(246,243,238,.62);max-width:520px}
.cta-actions{position:relative;display:flex;align-items:center;gap:20px;flex-wrap:wrap}
.cta-actions .link-arrow{color:rgba(246,243,238,.85)}
/* ============ FAQ ============ */
.faq{border-top:1px solid var(--line);max-width:900px}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:24px 0;cursor:pointer;list-style:none;
  font-size:17px;font-weight:600;line-height:1.55;transition:color .18s ease;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary:hover{color:var(--accent)}
.plus{position:relative;width:15px;height:15px;flex:none}
.plus::before,.plus::after{
  content:"";position:absolute;background:var(--accent);border-radius:1px;
  transition:transform .22s ease,opacity .22s ease;
}
.plus::before{left:0;top:7px;width:15px;height:1.5px}
.plus::after{left:7px;top:0;width:1.5px;height:15px}
details[open] .plus::after{transform:rotate(90deg);opacity:0}
.faq .answer{padding:0 0 26px;font-size:15.5px;line-height:1.85;color:var(--muted);max-width:760px}
/* ============ 页脚 ============ */
.site-footer{background:var(--ink);color:rgba(246,243,238,.78);padding:clamp(48px,6vw,76px) 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.footer-brand .f-logo{font-family:var(--serif);font-size:20px;font-weight:700;color:var(--bg);letter-spacing:.02em}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.85;color:rgba(246,243,238,.6);max-width:330px}
.footer-col h4{font-family:var(--sans);font-size:12.5px;letter-spacing:.14em;color:rgba(246,243,238,.44);font-weight:500;margin-bottom:18px}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a{font-size:14px;color:rgba(246,243,238,.76);position:relative;display:inline-block;transition:color .18s ease,transform .18s ease}
.footer-col a::before{
  content:"";position:absolute;left:-12px;top:50%;width:0;height:1px;background:var(--accent);
  transition:width .2s ease;transform:translateY(-50%);
}
.footer-col a:hover{color:var(--accent);transform:translateX(8px)}
.footer-col a:hover::before{width:5px}
.footer-contact li{font-size:14px;color:rgba(246,243,238,.76);line-height:1.8}
.footer-contact .label{display:block;font-size:11.5px;letter-spacing:.12em;color:rgba(246,243,238,.4);margin-bottom:2px}
.footer-bottom{
  margin-top:clamp(36px,5vw,56px);padding:22px 0;
  border-top:1px solid var(--line-dark);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12.5px;color:rgba(246,243,238,.44);
}
.footer-bottom a{color:rgba(246,243,238,.6)}
.footer-bottom a:hover{color:var(--accent)}
/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(10px);transition:opacity .5s ease,transform .5s ease}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
}
/* ============ 响应式 ============ */
@media (max-width:1280px){
  :root{--container:1120px}
  .nav-links{gap:20px;font-size:14px}
}
@media (max-width:1024px){
  :root{--pad:26px}
  .nav-links{display:none}
  .burger{display:grid}
  .hero-grid{grid-template-columns:1fr;gap:48px}
  .hero-visual{order:2}
  .frame{max-width:286px}
  .hero-copy h1{max-width:760px}
  .post-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .section-head{flex-direction:column;align-items:flex-start;gap:18px}
}
@media (max-width:768px){
  :root{--pad:20px}
  .nav-inner{height:56px}
  .brand{font-size:17px}
  .brand-kicker{display:none}
  .hero{padding:calc(56px + 32px) 0 44px}
  .hero-copy h1{font-size:clamp(1.75rem,7vw,2.4rem);line-height:1.2}
  .hero-stats{gap:22px}
  .stat-num{font-size:1.25rem}
  .hero-visual{justify-content:flex-start;padding-left:0}
  .frame{max-width:280px}
  .frame-mini{width:88px;right:-2px;bottom:-18px}
  .clip{flex:0 0 74%;min-width:74%}
  .voice{flex:0 0 82%;min-width:82%}
  .pick{padding:22px 8px;gap:16px;align-items:flex-start}
  .pick-index{min-width:44px;font-size:1.45rem;padding-top:2px}
  .pick-arrow{display:none}
  .post-grid{grid-template-columns:1fr;gap:20px}
  .cta-inner{border-radius:10px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .footer-brand{grid-column:1 / -1}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
}
@media (max-width:560px){
  .hero-actions .btn{width:100%}
  .hero-stats{flex-direction:column;gap:16px}
  .stat-num{display:inline}
  .footer-grid{grid-template-columns:1fr}
  .section-head h2{font-size:1.5rem}
  .faq summary{font-size:15.5px;padding:20px 0}
  .brand{font-size:16px}
  .rail{padding-bottom:16px}
}

/* roulang page: article */
:root{
  --ink:#14110E;
  --ink-soft:#2C2823;
  --ink-mute:#3A352F;
  --paper:#F6F3EE;
  --paper-2:#FBF9F5;
  --white:#FFFFFF;
  --accent:#C4472B;
  --accent-deep:#A5371F;
  --accent-tint:rgba(196,71,43,.07);
  --green:#2F4A3B;
  --muted:#6B6259;
  --line:#E3DDD4;
  --line-strong:#CFC6B9;
  --radius-card:8px;
  --radius-frame:12px;
  --radius-btn:4px;
  --shadow-1:0 1px 2px rgba(20,17,14,.06);
  --shadow-2:0 20px 44px -26px rgba(20,17,14,.32);
  --serif:"Noto Serif SC","Songti SC","SimSun",Georgia,"Times New Roman",serif;
  --sans:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --maxw:1280px;
  --gutter:32px;
  --nav-h:64px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
a{color:inherit;text-decoration:none;}
img{display:block;max-width:100%;border-style:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
input,textarea,select{font:inherit;color:inherit;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:2px;}
::selection{background:rgba(196,71,43,.16);}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding-left:var(--gutter);padding-right:var(--gutter);}
.serif{font-family:var(--serif);}

/* ============ 导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(246,243,238,.94);
  backdrop-filter:saturate(140%) blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color .2s ease, box-shadow .2s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 1px 0 rgba(20,17,14,.02);}
.nav-inner{
  width:100%;
  max-width:var(--maxw);
  margin:0 auto;
  padding:0 var(--gutter);
  height:var(--nav-h);
  display:flex;
  align-items:center;
  gap:20px;
}
.brand{
  font-family:var(--serif);
  font-size:20px;
  font-weight:700;
  letter-spacing:.01em;
  color:var(--ink);
  display:inline-flex;
  align-items:baseline;
  gap:7px;
  white-space:nowrap;
  flex:0 0 auto;
}
.brand-kicker{
  font-family:var(--sans);
  font-size:11px;
  font-weight:500;
  letter-spacing:.2em;
  color:var(--muted);
}
.brand:hover .brand-kicker{color:var(--accent);}
.nav-links{
  display:flex;
  align-items:center;
  gap:2px;
  margin-left:6px;
  flex:1 1 auto;
  min-width:0;
}
.nav-links a{
  position:relative;
  display:inline-block;
  padding:9px 12px;
  font-size:14px;
  color:var(--ink-mute);
  border-radius:var(--radius-btn);
  white-space:nowrap;
  transition:color .15s ease, background .15s ease;
}
.nav-links a:hover{color:var(--ink);background:rgba(20,17,14,.045);}
.nav-links a.is-active{color:var(--ink);font-weight:600;}
.nav-links a.is-active::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:2px;
  height:2px;
  background:var(--accent);
  border-radius:2px;
}
.nav-right{display:flex;align-items:center;gap:10px;margin-left:auto;flex:0 0 auto;}
.icon-btn{
  width:36px;height:36px;
  display:grid;place-items:center;
  border:1px solid var(--line);
  border-radius:var(--radius-btn);
  background:var(--white);
  color:var(--ink);
  transition:border-color .15s ease, color .15s ease, background .15s ease;
}
.icon-btn:hover{border-color:var(--line-strong);color:var(--accent);}
.icon-btn svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}
.burger{display:none;}

.btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:11px 18px;
  min-height:44px;
  font-size:14px;
  font-weight:600;
  letter-spacing:.01em;
  border-radius:var(--radius-btn);
  border:1px solid transparent;
  transition:background .15s ease, color .15s ease, border-color .15s ease, transform .15s ease;
  white-space:nowrap;
}
.btn .arrow{display:inline-block;transition:transform .15s ease;}
.btn:hover .arrow{transform:translateX(4px);}
.btn-primary{background:var(--ink);color:var(--paper-2);border-color:var(--ink);}
.btn-primary:hover{background:var(--accent);border-color:var(--accent);color:#fff;}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line-strong);}
.btn-ghost:hover{background:var(--ink);border-color:var(--ink);color:var(--paper-2);}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--ink);
  background-image:linear-gradient(var(--accent),var(--accent));
  background-repeat:no-repeat;
  background-size:0 1px;
  background-position:0 100%;
  padding-bottom:2px;
  transition:background-size .2s ease,color .15s ease;
}
.text-link:hover{background-size:100% 1px;color:var(--accent);}
.text-link .arrow{transition:transform .15s ease;}
.text-link:hover .arrow{transform:translateX(4px);}

/* 搜索浮层 */
.search-panel{
  position:absolute;
  left:0;right:0;top:100%;
  background:var(--white);
  border-bottom:1px solid var(--line);
  box-shadow:var(--shadow-1);
  display:none;
}
.search-panel.is-open{display:block;}
.search-inner{
  max-width:var(--maxw);
  margin:0 auto;
  padding:18px var(--gutter);
  display:flex;
  gap:12px;
  align-items:center;
}
.search-inner input{
  flex:1 1 auto;
  min-width:0;
  height:44px;
  padding:0 14px;
  border:1px solid var(--line);
  border-radius:var(--radius-btn);
  background:var(--paper-2);
  transition:border-color .15s ease, box-shadow .15s ease;
}
.search-inner input:focus{
  outline:none;
  border-color:var(--accent);
  box-shadow:0 0 0 2px rgba(196,71,43,.14);
  background:var(--white);
}

/* 移动抽屉 */
.nav-drawer{
  position:fixed;
  inset:0;
  z-index:120;
  background:var(--paper);
  display:flex;
  flex-direction:column;
  padding:20px var(--gutter) 28px;
  transform:translateY(-8px);
  opacity:0;
  visibility:hidden;
  transition:opacity .22s ease, transform .22s ease, visibility .22s;
  overflow-y:auto;
}
.nav-drawer.is-open{opacity:1;transform:none;visibility:visible;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-bottom:18px;border-bottom:1px solid var(--line);}
.drawer-logo{font-family:var(--serif);font-size:20px;font-weight:700;display:inline-flex;align-items:baseline;gap:7px;}
.drawer-links{display:flex;flex-direction:column;padding:14px 0;flex:1 1 auto;}
.drawer-links a{
  padding:14px 0;
  font-family:var(--serif);
  font-size:20px;
  border-bottom:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  color:var(--ink);
}
.drawer-links a::after{content:"→";font-family:var(--sans);font-size:16px;color:var(--muted);}
.drawer-links a.is-active{color:var(--accent);}
.drawer-links a.is-active::after{color:var(--accent);}
.drawer-foot{padding-top:18px;border-top:1px solid var(--line);display:flex;flex-direction:column;gap:10px;}
.drawer-foot p{margin:0;font-size:13px;color:var(--muted);letter-spacing:.02em;}
body.no-scroll{overflow:hidden;}

/* ============ 文章头部 ============ */
.page-main{display:block;}
.article-hero{
  padding:44px 0 0;
  border-bottom:1px solid var(--line);
  background:linear-gradient(180deg,var(--paper-2) 0%,var(--paper) 100%);
}
.hero-grid{
  display:grid;
  grid-template-columns:minmax(0,1.55fr) minmax(0,.45fr);
  gap:48px;
  align-items:end;
  padding-bottom:40px;
}
.crumbs{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:13px;
  color:var(--muted);
  margin-bottom:22px;
  letter-spacing:.01em;
}
.crumbs a{color:var(--muted);transition:color .15s ease;}
.crumbs a:hover{color:var(--accent);}
.crumbs .sep{color:var(--line-strong);}
.crumbs .current{color:var(--ink-mute);max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.eyebrow-tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:5px 12px;
  font-size:12px;
  letter-spacing:.12em;
  color:var(--green);
  border:1px solid rgba(47,74,59,.28);
  border-radius:100px;
  background:rgba(47,74,59,.05);
  margin-bottom:20px;
}
.eyebrow-tag::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);}
.page-h1{
  font-family:var(--serif);
  font-weight:700;
  font-size:clamp(1.9rem,3.6vw,3.1rem);
  line-height:1.16;
  letter-spacing:.005em;
  color:var(--ink);
  max-width:22em;
}
.meta-row{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  margin-top:24px;
  font-size:13px;
  color:var(--muted);
  letter-spacing:.02em;
}
.meta-row .bar{color:var(--line-strong);}
.meta-row .chip{
  padding:3px 10px;
  border:1px solid var(--line);
  border-radius:100px;
  background:var(--white);
  color:var(--ink-mute);
}
.hero-thumb{
  width:100%;
  max-width:260px;
  margin-left:auto;
  aspect-ratio:3/4;
  border-radius:var(--radius-frame);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--white);
  box-shadow:var(--shadow-2);
}
.hero-thumb img{width:100%;height:100%;object-fit:cover;}

/* 封面 */
.cover-section{padding:36px 0 0;}
.cover-frame{
  border-radius:var(--radius-card);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--white);
  aspect-ratio:21/9;
}
.cover-frame img{width:100%;height:100%;object-fit:cover;}
.cover-caption{
  margin-top:12px;
  font-size:13px;
  color:var(--muted);
  letter-spacing:.02em;
}

/* ============ 正文 ============ */
.article-wrap{padding:56px 0 0;}
.article-body{
  max-width:740px;
  margin:0 auto;
  font-size:17.5px;
  line-height:1.9;
  color:var(--ink-soft);
  word-break:break-word;
}
.article-body > *:first-child{margin-top:0;}
.article-body p{margin:0 0 1.2em;}
.article-body h2{
  font-family:var(--serif);
  font-size:clamp(1.4rem,2.4vw,1.9rem);
  font-weight:700;
  line-height:1.32;
  color:var(--ink);
  margin:48px 0 18px;
  padding-bottom:10px;
  border-bottom:1px solid var(--line);
}
.article-body h3{
  font-family:var(--serif);
  font-size:1.25rem;
  font-weight:700;
  line-height:1.4;
  color:var(--ink);
  margin:32px 0 12px;
}
.article-body h4{font-size:1.05rem;font-weight:600;color:var(--ink);margin:24px 0 10px;}
.article-body a{
  color:var(--accent);
  text-decoration:underline;
  text-decoration-thickness:1px;
  text-underline-offset:3px;
}
.article-body a:hover{color:var(--accent-deep);}
.article-body strong{color:var(--ink);font-weight:600;}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.35em;}
.article-body ul li{list-style:disc;margin:.5em 0;}
.article-body ol li{list-style:decimal;margin:.5em 0;}
.article-body li::marker{color:var(--accent);}
.article-body blockquote{
  margin:26px 0;
  padding:16px 22px;
  border-left:3px solid var(--accent);
  background:var(--accent-tint);
  border-radius:0 var(--radius-card) var(--radius-card) 0;
  color:var(--ink-mute);
  font-size:16.5px;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{
  max-width:100%;
  height:auto;
  border-radius:var(--radius-card);
  margin:26px auto;
  border:1px solid var(--line);
}
.article-body figure{margin:26px 0;}
.article-body figcaption{
  font-size:13px;
  color:var(--muted);
  text-align:center;
  margin-top:10px;
  letter-spacing:.02em;
}
.article-body table{
  width:100%;
  border-collapse:collapse;
  margin:26px 0;
  font-size:15px;
  display:table;
}
.article-body th,.article-body td{
  border:1px solid var(--line);
  padding:10px 14px;
  text-align:left;
  vertical-align:top;
}
.article-body thead th{background:var(--paper-2);color:var(--ink);font-weight:600;}
.article-body tbody tr:nth-child(even){background:rgba(20,17,14,.022);}
.article-body pre{
  background:var(--ink);
  color:var(--paper);
  padding:18px 20px;
  border-radius:var(--radius-card);
  overflow-x:auto;
  font-size:14px;
  line-height:1.7;
  margin:26px 0;
}
.article-body code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:.9em;
  background:rgba(20,17,14,.06);
  padding:.15em .4em;
  border-radius:3px;
}
.article-body pre code{background:none;padding:0;color:inherit;}
.article-body hr{border:0;border-top:1px solid var(--line);margin:40px 0;}
.table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;}

.article-foot{
  max-width:740px;
  margin:48px auto 0;
  padding-top:24px;
  border-top:1px solid var(--line);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:16px;
}
.tag-list{display:flex;flex-wrap:wrap;gap:8px;}
.tag{
  display:inline-block;
  padding:5px 12px;
  font-size:12px;
  letter-spacing:.06em;
  color:var(--ink-mute);
  background:var(--white);
  border:1px solid var(--line);
  border-radius:100px;
}
.empty-state{
  max-width:740px;
  margin:0 auto;
  padding:56px 28px;
  border:1px dashed var(--line-strong);
  border-radius:var(--radius-card);
  background:var(--paper-2);
  text-align:center;
}
.empty-state p{margin:0 0 18px;color:var(--muted);font-size:15px;}

/* ============ 通用板块 ============ */
.section{padding:84px 0 0;}
.section-head{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:16px;
  margin-bottom:32px;
}
.section-title{
  font-family:var(--serif);
  font-size:clamp(1.5rem,2.6vw,2.2rem);
  font-weight:700;
  line-height:1.2;
  color:var(--ink);
}
.section-sub{margin-top:10px;font-size:14.5px;color:var(--muted);max-width:46em;}

/* 相关推荐卡 */
.rec-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.post-card{
  display:flex;
  flex-direction:column;
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  transition:transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.post-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--line-strong);}
.post-thumb{aspect-ratio:3/2;overflow:hidden;background:var(--paper);}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.post-card:hover .post-thumb img{transform:scale(1.03);}
.post-body{padding:16px 18px 18px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto;}
.post-title{
  font-size:16px;
  font-weight:600;
  line-height:1.5;
  color:var(--ink);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.post-meta{
  margin-top:auto;
  font-size:12.5px;
  color:var(--muted);
  display:flex;
  align-items:center;
  gap:8px;
  letter-spacing:.02em;
}
.post-meta .dot{color:var(--line-strong);}

/* FAQ */
.faq-list{max-width:840px;border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:20px 0;
  font-size:17px;
  font-weight:600;
  color:var(--ink);
  transition:color .15s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--accent);}
.faq-item summary::after{
  content:"+";
  font-size:22px;
  line-height:1;
  color:var(--accent);
  transition:transform .2s ease;
  flex:0 0 auto;
}
.faq-item[open] summary::after{content:"−";transform:rotate(180deg);}
.faq-body{padding:0 0 22px;font-size:15.5px;line-height:1.85;color:var(--ink-mute);max-width:44em;}

/* CTA 带 */
.cta-band{
  margin-top:84px;
  background:var(--ink);
  color:var(--paper);
  border-radius:var(--radius-card);
  padding:48px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:28px;
}
.cta-band h2{
  font-family:var(--serif);
  font-size:clamp(1.4rem,2.4vw,2rem);
  font-weight:700;
  line-height:1.3;
  color:var(--paper);
  max-width:20em;
}
.cta-band p{margin-top:12px;font-size:14.5px;color:rgba(246,243,238,.66);max-width:36em;}
.cta-actions{display:flex;flex-wrap:wrap;align-items:center;gap:18px;}
.cta-band .btn-primary{background:var(--accent);border-color:var(--accent);color:#fff;}
.cta-band .btn-primary:hover{background:#fff;border-color:#fff;color:var(--ink);}
.cta-band .text-link{color:var(--paper);}
.cta-band .text-link:hover{color:var(--accent);}

/* 返回入口 */
.back-strip{
  margin-top:36px;
  display:flex;
  justify-content:center;
}

/* 页脚 */
.site-footer{
  margin-top:96px;
  background:var(--ink);
  color:var(--paper);
  padding:64px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.1fr;
  gap:40px;
  padding-bottom:48px;
}
.f-logo{font-family:var(--serif);font-size:22px;font-weight:700;letter-spacing:.01em;color:var(--paper);}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.85;color:rgba(246,243,238,.62);max-width:30em;}
.footer-col h4{
  font-size:13px;
  font-weight:600;
  letter-spacing:.16em;
  color:rgba(246,243,238,.5);
  margin-bottom:18px;
}
.footer-col ul{display:flex;flex-direction:column;gap:12px;}
.footer-col a{
  position:relative;
  font-size:14.5px;
  color:rgba(246,243,238,.82);
  transition:color .15s ease, padding-left .18s ease;
}
.footer-col a::before{
  content:"";
  position:absolute;
  left:-14px;top:50%;
  width:0;height:1px;
  background:var(--accent);
  transform:translateY(-50%);
  transition:width .18s ease;
}
.footer-col a:hover{color:var(--accent);padding-left:10px;}
.footer-col a:hover::before{width:8px;}
.footer-contact li{font-size:14px;color:rgba(246,243,238,.82);display:flex;flex-direction:column;gap:2px;}
.footer-contact .label{font-size:11.5px;letter-spacing:.14em;color:rgba(246,243,238,.42);}
.footer-bottom{
  border-top:1px solid rgba(246,243,238,.14);
  padding:22px 0 28px;
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:12px;
  font-size:12.5px;
  color:rgba(246,243,238,.46);
  letter-spacing:.03em;
}

/* 动效 */
.reveal{opacity:0;transform:translateY(10px);transition:opacity .5s ease, transform .5s ease;}
.reveal.is-visible{opacity:1;transform:none;}

/* 空态 / 错误图 */
.img-fallback{background:var(--paper-2);display:grid;place-items:center;font-family:var(--serif);font-size:28px;color:var(--line-strong);}

/* ============ 响应式 ============ */
@media (max-width:1080px){
  .nav-links{display:none;}
  .burger{display:grid;}
  .hero-grid{grid-template-columns:minmax(0,1fr);gap:32px;}
  .hero-thumb{max-width:200px;margin:0 0 0 auto;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
}
@media (max-width:1024px){
  :root{--gutter:26px;}
  .section{padding-top:72px;}
  .rec-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .cta-band{margin-top:72px;padding:40px;}
}
@media (max-width:768px){
  :root{--gutter:20px;--nav-h:56px;}
  .brand{font-size:18px;}
  .brand-kicker{font-size:10px;letter-spacing:.16em;}
  .nav-right .btn-primary{display:none;}
  .article-hero{padding-top:28px;}
  .hero-grid{padding-bottom:28px;}
  .hero-thumb{display:none;}
  .page-h1{font-size:clamp(1.6rem,6vw,2.2rem);}
  .cover-section{padding-top:24px;}
  .cover-frame{aspect-ratio:16/9;}
  .article-wrap{padding-top:36px;}
  .article-body{font-size:16.5px;line-height:1.85;}
  .article-body h2{margin-top:36px;}
  .section{padding-top:56px;}
  .rec-grid{grid-template-columns:minmax(0,1fr);}
  .cta-band{padding:30px 24px;gap:22px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:36px;}
  .site-footer{margin-top:64px;padding-top:48px;}
  .table-scroll{overflow-x:auto;}
  .article-body table{min-width:520px;}
  .article-body pre{font-size:13px;}
  .faq-item summary{font-size:16px;padding:18px 0;}
}
@media (max-width:560px){
  .section-head{flex-direction:column;align-items:flex-start;gap:10px;}
  .meta-row{font-size:12.5px;gap:8px;}
  .crumbs .current{max-width:180px;}
  .cta-actions{width:100%;flex-direction:column;align-items:stretch;}
  .cta-actions .btn{justify-content:center;}
  .drawer-links a{font-size:18px;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{animation-duration:.01ms !important;transition-duration:.01ms !important;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category1 */
:root{
  --ink:#14110E;
  --ink-2:#241F1A;
  --paper:#F6F3EE;
  --white:#FFFFFF;
  --accent:#C4472B;
  --accent-dark:#A5371F;
  --green:#2F4A3B;
  --muted:#6B6259;
  --line:#E3DDD4;
  --line-dark:#3A332C;
  --radius-sm:4px;
  --radius-md:8px;
  --radius-lg:12px;
  --shadow-1:0 1px 2px rgba(20,17,14,.06);
  --shadow-2:0 18px 48px -24px rgba(20,17,14,.28);
  --font-serif:"Noto Serif SC","Songti SC","Source Han Serif SC",Georgia,"Times New Roman",serif;
  --font-sans:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-num:"Inter","Helvetica Neue",Arial,system-ui,sans-serif;
  --nav-h:64px;
  --container:1200px;
}

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

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

body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;font-size:inherit;color:inherit;background:none;border:0;cursor:pointer;}
input,textarea,select{font-family:inherit;font-size:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-family:var(--font-serif);font-weight:700;letter-spacing:.01em;}
p{margin:0;}
svg{display:block;}

:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:2px;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 32px;
}

.section{padding:104px 0;}
.section--tight{padding:72px 0;}
.section--dark{background:var(--ink);color:var(--paper);}

.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:44px;}
.section-head .head-text{max-width:620px;}
.section-title{
  font-size:clamp(1.6rem,3vw,2.5rem);
  line-height:1.15;
  letter-spacing:.01em;
}
.section-desc{margin-top:14px;color:var(--muted);font-size:15.5px;line-height:1.8;max-width:640px;}
.section--dark .section-desc{color:#BDB4A9;}

.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-num);
  font-size:12px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--muted);
}
.eyebrow::before{content:"";width:6px;height:6px;background:var(--accent);border-radius:50%;}
.section--dark .eyebrow{color:#BDB4A9;}

.badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:5px 12px;border:1px solid var(--line);border-radius:100px;
  font-size:12.5px;letter-spacing:.06em;color:var(--ink);
  background:rgba(255,255,255,.6);
}
.badge .dot{width:5px;height:5px;border-radius:50%;background:var(--accent);}
.badge--green{color:var(--green);border-color:rgba(47,74,59,.28);background:rgba(47,74,59,.06);}

.tag{
  display:inline-block;padding:3px 9px;border-radius:3px;
  font-size:11.5px;letter-spacing:.08em;line-height:1.6;
  background:rgba(47,74,59,.09);color:var(--green);
}
.tag--accent{background:rgba(196,71,43,.1);color:var(--accent-dark);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 22px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;letter-spacing:.02em;
  border:1px solid transparent;
  transition:background-color .15s ease,color .15s ease,border-color .15s ease,transform .15s ease;
  white-space:nowrap;
}
.btn .arrow{display:inline-block;transition:transform .15s ease;font-family:var(--font-num);}
.btn:hover .arrow{transform:translateX(4px);}

.btn-primary{background:var(--accent);color:#fff;}
.btn-primary:hover{background:var(--accent-dark);}
.btn-primary:active{transform:translateY(1px);}

.btn-dark{background:var(--ink);color:var(--paper);}
.btn-dark:hover{background:#000;}

.btn-ghost{border-color:var(--line);color:var(--ink);background:transparent;}
.btn-ghost:hover{background:var(--ink);color:var(--paper);border-color:var(--ink);}

.btn-ghost-light{border-color:rgba(246,243,238,.34);color:var(--paper);background:transparent;}
.btn-ghost-light:hover{background:var(--paper);color:var(--ink);border-color:var(--paper);}

.btn-sm{min-height:40px;padding:0 16px;font-size:14px;}

.text-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14.5px;font-weight:600;color:var(--ink);
  border-bottom:1px solid transparent;padding-bottom:2px;
  transition:color .15s ease,border-color .15s ease;
}
.text-link:hover{color:var(--accent);border-color:var(--accent);}
.text-link .arrow{transition:transform .15s ease;font-family:var(--font-num);}
.text-link:hover .arrow{transform:translateX(4px);}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:90;
  background:rgba(246,243,238,.92);
  backdrop-filter:saturate(140%) blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color .2s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--line);}

.nav-inner{
  max-width:1280px;margin:0 auto;
  height:var(--nav-h);
  padding:0 32px;
  display:flex;align-items:center;gap:28px;
}

.brand{
  display:flex;align-items:baseline;gap:8px;
  font-family:var(--font-serif);font-weight:700;font-size:20px;letter-spacing:.04em;
  color:var(--ink);flex-shrink:0;
}
.brand-kicker{
  font-family:var(--font-sans);font-size:11.5px;font-weight:500;
  letter-spacing:.18em;color:var(--muted);
}

.nav-links{display:flex;align-items:center;gap:4px;margin-left:8px;flex:1;}
.nav-links a{
  position:relative;
  display:inline-flex;align-items:center;height:var(--nav-h);
  padding:0 12px;font-size:14.5px;color:#3B352F;
  transition:color .15s ease;
  white-space:nowrap;
}
.nav-links a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:14px;height:2px;
  background:var(--accent);transform:scaleX(0);transform-origin:left;
  transition:transform .2s ease;
}
.nav-links a:hover{color:var(--ink);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.is-active{color:var(--ink);font-weight:600;}
.nav-links a.is-active::after{transform:scaleX(1);}

.nav-right{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.icon-btn{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:var(--radius-sm);
  color:var(--ink);border:1px solid transparent;
  transition:background-color .15s ease,border-color .15s ease;
}
.icon-btn:hover{background:rgba(20,17,14,.06);border-color:var(--line);}
.icon-btn svg{width:19px;height:19px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;}

.burger{display:none;}

/* 移动抽屉 */
.drawer{
  position:fixed;inset:0;z-index:120;
  background:var(--paper);
  padding:20px 22px 32px;
  display:flex;flex-direction:column;
  transform:translateY(-100%);
  transition:transform .28s ease;
  visibility:hidden;
  overflow-y:auto;
}
.drawer.is-open{transform:translateY(0);visibility:visible;}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px;}
.drawer .brand{font-size:19px;}
.drawer-nav{display:flex;flex-direction:column;border-top:1px solid var(--line);}
.drawer-nav a{
  display:flex;align-items:center;justify-content:space-between;
  padding:18px 2px;font-family:var(--font-serif);font-size:20px;font-weight:600;
  border-bottom:1px solid var(--line);
}
.drawer-nav a.is-active{color:var(--accent);}
.drawer-nav a span{font-family:var(--font-num);font-size:12px;color:var(--muted);letter-spacing:.1em;}
.drawer-foot{margin-top:auto;padding-top:28px;color:var(--muted);font-size:13.5px;line-height:2;}
.drawer-foot strong{display:block;color:var(--ink);font-size:13px;letter-spacing:.12em;margin-bottom:6px;text-transform:uppercase;}

/* 搜索面板 */
.search-panel{
  position:fixed;left:0;right:0;top:0;z-index:130;
  background:var(--paper);border-bottom:1px solid var(--line);
  transform:translateY(-102%);transition:transform .24s ease;
  box-shadow:var(--shadow-2);
}
.search-panel.is-open{transform:translateY(0);}
.search-inner{
  max-width:900px;margin:0 auto;padding:22px 24px;
  display:flex;align-items:center;gap:12px;
}
.search-inner input{
  flex:1;min-height:46px;padding:0 16px;background:#fff;
  border:1px solid var(--line);border-radius:var(--radius-sm);
}
.search-inner input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(196,71,43,.14);}
.search-close{font-size:13px;color:var(--muted);padding:10px;}

/* ============ Hero ============ */
.hero{
  position:relative;
  padding:56px 0 76px;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.hero::before{
  content:"";position:absolute;right:-140px;top:-120px;width:520px;height:520px;
  background:radial-gradient(circle,rgba(196,71,43,.10),rgba(196,71,43,0) 68%);
  pointer-events:none;
}
.hero-grid{
  display:grid;grid-template-columns:minmax(0,56%) minmax(0,44%);
  gap:56px;align-items:center;position:relative;
}
.hero-copy .badge{margin-bottom:22px;}
.hero h1{
  font-size:clamp(2.25rem,4.6vw,3.9rem);
  line-height:1.05;
  letter-spacing:.005em;
  margin-bottom:20px;
}
.hero h1 em{font-style:normal;color:var(--accent);}
.hero-sub{
  font-size:17px;line-height:1.8;color:#4A433B;max-width:520px;
}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:30px;}
.hero-stats{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
  gap:0;margin-top:42px;border-top:1px solid var(--line);padding-top:22px;
  max-width:560px;
}
.hero-stats .stat{padding-right:18px;}
.hero-stats .stat + .stat{border-left:1px solid var(--line);padding-left:22px;}
.stat-num{
  font-family:var(--font-num);font-weight:600;font-size:24px;letter-spacing:-.01em;
  display:block;line-height:1.2;
}
.stat-label{display:block;font-size:12.5px;color:var(--muted);margin-top:6px;letter-spacing:.04em;}

/* Hero 竖帧视觉 */
.hero-visual{position:relative;display:flex;justify-content:flex-end;}
.frame-main{
  position:relative;width:100%;max-width:340px;aspect-ratio:9/16;
  border-radius:var(--radius-lg);overflow:hidden;
  background:var(--ink-2);box-shadow:var(--shadow-2);
}
.frame-main img{width:100%;height:100%;object-fit:cover;}
.frame-main::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(to top,rgba(20,17,14,.82) 0%,rgba(20,17,14,.18) 38%,rgba(20,17,14,0) 66%);
}
.play-dot{
  position:absolute;left:18px;top:18px;z-index:2;
  display:inline-flex;align-items:center;gap:7px;
  padding:5px 11px;border-radius:100px;
  background:rgba(246,243,238,.92);color:var(--ink);
  font-family:var(--font-num);font-size:11px;letter-spacing:.12em;
}
.play-dot::before{
  content:"";width:0;height:0;
  border-left:7px solid var(--accent);border-top:4.5px solid transparent;border-bottom:4.5px solid transparent;
}
.frame-meta{
  position:absolute;left:0;right:0;bottom:0;z-index:2;padding:20px 20px 22px;color:var(--paper);
}
.frame-meta .fm-title{font-family:var(--font-serif);font-size:19px;font-weight:700;line-height:1.35;}
.frame-meta .fm-row{
  display:flex;align-items:center;gap:10px;margin-top:10px;
  font-family:var(--font-num);font-size:12px;letter-spacing:.08em;color:#D7CEC2;
}
.frame-meta .fm-row span + span::before{content:"·";margin-right:10px;color:#8C8378;}

.frame-sub{
  position:absolute;right:-6px;bottom:-30px;width:126px;aspect-ratio:3/4;
  border-radius:var(--radius-md);overflow:hidden;
  border:3px solid var(--paper);box-shadow:var(--shadow-2);z-index:3;
}
.frame-sub img{width:100%;height:100%;object-fit:cover;}

/* ============ 双栏页头 ============ */
.split-head{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);
  gap:64px;align-items:start;
  padding-bottom:48px;border-bottom:1px solid var(--line);
}
.split-head h2{
  font-size:clamp(1.6rem,2.8vw,2.4rem);line-height:1.18;
}
.split-head h2 span{display:block;color:var(--muted);font-size:.62em;margin-top:12px;font-family:var(--font-sans);font-weight:500;letter-spacing:.02em;}
.split-body p{color:#4A433B;font-size:16px;line-height:1.85;}
.split-body p + p{margin-top:16px;}
.mini-list{margin-top:26px;display:grid;gap:0;}
.mini-list li{
  display:flex;align-items:baseline;gap:14px;
  padding:13px 0;border-top:1px solid var(--line);font-size:14.5px;
}
.mini-list li:last-child{border-bottom:1px solid var(--line);}
.mini-list .k{font-family:var(--font-num);font-size:11.5px;letter-spacing:.14em;color:var(--accent);flex-shrink:0;}
.mini-list .v{color:#4A433B;}

/* ============ 竖帧卡片墙 ============ */
.frame-grid{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  gap:26px 22px;margin-top:48px;
}
.frame-card{
  display:block;border-radius:var(--radius-lg);
  transition:transform .2s ease;
}
.frame-card:hover{transform:translateY(-2px);}
.frame-card .thumb{
  position:relative;aspect-ratio:3/4;border-radius:var(--radius-lg);
  overflow:hidden;background:#EAE4DA;border:1px solid var(--line);
}
.frame-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.frame-card:hover .thumb img{transform:scale(1.03);}
.frame-card .thumb::after{
  content:"";position:absolute;inset:auto 0 0 0;height:46%;
  background:linear-gradient(to top,rgba(20,17,14,.55),rgba(20,17,14,0));
  opacity:0;transition:opacity .2s ease;
}
.frame-card:hover .thumb::after{opacity:1;}
.dur{
  position:absolute;left:10px;bottom:10px;z-index:2;
  font-family:var(--font-num);font-size:11px;letter-spacing:.06em;
  padding:2px 7px;border-radius:3px;
  background:rgba(20,17,14,.72);color:#F6F3EE;
}
.frame-card .fc-body{padding:14px 2px 0;}
.frame-card h3{
  font-family:var(--font-sans);font-size:15px;font-weight:600;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.frame-card .fc-foot{
  display:flex;align-items:center;gap:8px;margin-top:10px;font-size:12px;color:var(--muted);
}
.frame-card .fc-foot .sep{width:3px;height:3px;border-radius:50%;background:var(--line);}

/* ============ 状态条 / 数据面板 ============ */
.strip{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  background:var(--ink);color:var(--paper);border-radius:var(--radius-lg);
  overflow:hidden;
}
.strip .cell{
  padding:30px 26px;border-right:1px solid var(--line-dark);
}
.strip .cell:last-child{border-right:0;}
.strip .cell .s-num{
  font-family:var(--font-num);font-size:28px;font-weight:600;letter-spacing:-.02em;
  display:block;line-height:1.15;color:#F6F3EE;
}
.strip .cell .s-num em{font-style:normal;color:#E0866F;font-size:.6em;margin-left:3px;letter-spacing:0;}
.strip .cell .s-label{
  display:block;margin-top:8px;font-size:13px;color:#B4ABA0;line-height:1.6;
}

/* ============ 流程条 ============ */
.flow{
  display:grid;grid-template-columns:repeat(5,minmax(0,1fr));
  gap:0;margin-top:8px;border-top:1px solid var(--line);
}
.flow .step{
  padding:26px 20px 0 0;position:relative;
}
.flow .step + .step{padding-left:22px;border-left:1px solid var(--line);}
.flow .idx{
  font-family:var(--font-num);font-size:12px;letter-spacing:.16em;color:var(--accent);
  display:block;margin-bottom:10px;
}
.flow .st-title{
  font-family:var(--font-serif);font-size:19px;font-weight:700;line-height:1.3;margin-bottom:8px;
}
.flow .st-desc{font-size:13.5px;line-height:1.75;color:var(--muted);}

/* ============ 适用场景行列表 ============ */
.rows{border-top:1px solid var(--line);}
.row-item{
  display:grid;grid-template-columns:64px minmax(0,1fr) minmax(0,1.25fr) auto;
  gap:24px;align-items:center;
  padding:26px 0;border-bottom:1px solid var(--line);
  position:relative;transition:background-color .2s ease;
}
.row-item::before{
  content:"";position:absolute;left:-16px;right:-16px;top:0;bottom:0;
  background:rgba(196,71,43,.035);transform:scaleX(0);transform-origin:left;
  transition:transform .25s ease;z-index:-1;
}
.row-item:hover::before{transform:scaleX(1);}
.row-item .r-idx{
  font-family:var(--font-serif);font-size:22px;font-weight:700;color:var(--accent);letter-spacing:.02em;
}
.row-item .r-name{font-family:var(--font-serif);font-size:19px;font-weight:700;line-height:1.35;}
.row-item .r-desc{font-size:14.5px;color:var(--muted);line-height:1.75;}
.row-item .r-tag{justify-self:end;}
.row-item .r-arrow{font-family:var(--font-num);color:var(--muted);transition:transform .2s ease,color .2s ease;}
.row-item:hover .r-arrow{transform:translateX(4px);color:var(--accent);}

/* ============ FAQ ============ */
.faq-wrap{max-width:840px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:first-child{border-top:1px solid var(--line);}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:flex-start;justify-content:space-between;gap:24px;
  padding:22px 0;font-size:16.5px;font-weight:600;line-height:1.6;
  transition:color .15s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--accent);}
.faq-item summary::after{
  content:"+";flex-shrink:0;
  font-family:var(--font-num);font-size:22px;font-weight:400;line-height:1;
  color:var(--accent);transition:transform .2s ease;
  transform-origin:center;margin-top:2px;
}
.faq-item[open] summary::after{transform:rotate(45deg);}
.faq-item .faq-a{
  padding:0 44px 24px 0;font-size:15px;line-height:1.85;color:#4A433B;
}

/* ============ 表单 ============ */
.cta-band{
  background:var(--ink);color:var(--paper);
  border-radius:var(--radius-lg);padding:56px;
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.9fr);
  gap:56px;align-items:center;
}
.cta-band h2{font-size:clamp(1.5rem,2.4vw,2.1rem);line-height:1.25;}
.cta-band p{margin-top:14px;color:#BDB4A9;font-size:15px;line-height:1.8;max-width:440px;}
.cta-actions{display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-top:26px;}

.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.field{display:flex;flex-direction:column;gap:7px;}
.field.full{grid-column:1 / -1;}
.field label{font-size:12.5px;letter-spacing:.06em;color:#B4ABA0;}
.field input,.field textarea,.field select{
  width:100%;min-height:46px;padding:11px 14px;
  background:rgba(246,243,238,.06);
  border:1px solid #453D35;border-radius:var(--radius-sm);
  color:var(--paper);transition:border-color .15s ease,box-shadow .15s ease;
}
.field textarea{min-height:86px;resize:vertical;line-height:1.7;}
.field input::placeholder,.field textarea::placeholder{color:#7F776D;}
.field input:focus,.field textarea:focus,.field select:focus{
  outline:none;border-color:var(--accent);
  box-shadow:0 0 0 3px rgba(196,71,43,.22);
}
.form-note{font-size:12.5px;color:#9C9389;margin-top:4px;}
.form-actions{grid-column:1 / -1;display:flex;align-items:center;gap:16px;margin-top:6px;}
.form-status{
  grid-column:1 / -1;display:none;
  padding:10px 14px;border-radius:var(--radius-sm);
  font-size:13.5px;line-height:1.7;
  border-left:3px solid var(--accent);
  background:rgba(196,71,43,.14);color:#F0C6BA;
}
.form-status.is-show{display:block;}

/* ============ 返回链接带 ============ */
.back-band{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:20px;padding:26px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.back-band .bb-title{font-family:var(--font-serif);font-size:18px;font-weight:700;}
.back-band .bb-links{display:flex;flex-wrap:wrap;gap:22px;}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink);color:var(--paper);padding:72px 0 0;}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;
  gap:48px;padding-bottom:52px;
}
.f-logo{
  font-family:var(--font-serif);font-size:21px;font-weight:700;letter-spacing:.04em;
  margin-bottom:16px;
}
.footer-brand p{color:#B4ABA0;font-size:14px;line-height:1.85;max-width:330px;}
.footer-col h4{
  font-family:var(--font-sans);font-size:12.5px;font-weight:600;
  letter-spacing:.16em;text-transform:uppercase;color:#8F8579;
  margin-bottom:18px;
}
.footer-col ul{display:grid;gap:11px;}
.footer-col a{
  position:relative;display:inline-block;font-size:14.5px;color:#D9D1C6;
  transition:color .15s ease,transform .15s ease;
}
.footer-col a::before{
  content:"";position:absolute;left:-14px;top:50%;width:8px;height:1px;
  background:var(--accent);transform:scaleX(0);transform-origin:right;
  transition:transform .18s ease;
}
.footer-col a:hover{color:var(--accent);transform:translateX(8px);}
.footer-col a:hover::before{transform:scaleX(1);transform-origin:left;}
.footer-contact li{font-size:14px;color:#D9D1C6;line-height:1.8;}
.footer-contact .label{display:block;font-size:11.5px;letter-spacing:.12em;color:#8F8579;margin-bottom:2px;}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  padding:22px 0 26px;border-top:1px solid #2C2620;
  font-size:12.5px;color:#8F8579;letter-spacing:.04em;
}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(10px);transition:opacity .5s ease,transform .5s ease;}
.reveal.is-in{opacity:1;transform:none;}
.reveal.d1{transition-delay:.06s;}
.reveal.d2{transition-delay:.12s;}
.reveal.d3{transition-delay:.18s;}
.reveal.d4{transition-delay:.24s;}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  .reveal{opacity:1;transform:none;}
}

/* ============ 响应式 ============ */
@media (max-width:1280px){
  .container{padding:0 28px;}
  .nav-inner{padding:0 28px;gap:18px;}
  .nav-links a{padding:0 9px;font-size:14px;}
  .nav-links a::after{left:9px;right:9px;}
}

@media (max-width:1024px){
  :root{--nav-h:64px;}
  .nav-links{display:none;}
  .burger{display:inline-flex;}
  .nav-right .btn-primary{display:none;}
  .nav-inner{justify-content:space-between;}
  .hero-grid{grid-template-columns:1fr;gap:44px;}
  .hero-visual{justify-content:center;}
  .frame-main{max-width:300px;}
  .frame-sub{right:0;bottom:-24px;}
  .split-head{grid-template-columns:1fr;gap:28px;}
  .frame-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .strip{grid-template-columns:repeat(2,minmax(0,1fr));}
  .strip .cell:nth-child(2){border-right:0;}
  .strip .cell{border-bottom:1px solid var(--line-dark);}
  .strip .cell:nth-child(3),.strip .cell:nth-child(4){border-bottom:0;}
  .flow{grid-template-columns:repeat(2,minmax(0,1fr));gap:0;}
  .flow .step{padding:22px 20px 22px 0;border-bottom:1px solid var(--line);}
  .flow .step + .step{border-left:0;padding-left:0;}
  .flow .step:nth-child(even){padding-left:24px;border-left:1px solid var(--line);}
  .row-item{grid-template-columns:44px minmax(0,1fr) auto;gap:16px;}
  .row-item .r-desc{grid-column:2 / -1;margin-top:-4px;}
  .row-item .r-tag{display:none;}
  .cta-band{grid-template-columns:1fr;padding:40px;gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
}

@media (max-width:768px){
  .container{padding:0 20px;}
  .nav-inner{padding:0 20px;}
  .section{padding:64px 0;}
  .section--tight{padding:48px 0;}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:32px;}
  .hero{padding:36px 0 56px;}
  .hero-sub{font-size:16px;}
  .hero-actions .btn{flex:1 1 auto;justify-content:center;}
  .hero-stats{grid-template-columns:1fr 1fr;gap:18px 0;}
  .hero-stats .stat:nth-child(3){grid-column:1 / -1;border-left:0;padding-left:0;border-top:1px solid var(--line);padding-top:16px;}
  .frame-main{max-width:280px;}
  .frame-sub{width:104px;right:-4px;bottom:-22px;}
  .frame-grid{gap:20px 14px;margin-top:32px;}
  .frame-card h3{font-size:14px;}
  .strip .cell{padding:22px 18px;}
  .strip .cell .s-num{font-size:23px;}
  .cta-band{padding:30px 22px;border-radius:var(--radius-md);}
  .form-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
  .footer-brand{grid-column:1 / -1;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .back-band{flex-direction:column;align-items:flex-start;gap:14px;}
}

@media (max-width:560px){
  .brand{font-size:18px;}
  .brand-kicker{font-size:10.5px;letter-spacing:.14em;}
  .hero h1{font-size:clamp(1.9rem,8.4vw,2.4rem);}
  .frame-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px 12px;}
  .flow{grid-template-columns:1fr;}
  .flow .step,.flow .step:nth-child(even){padding:20px 0;border-left:0;}
  .row-item{grid-template-columns:34px minmax(0,1fr);gap:12px;}
  .row-item .r-arrow{display:none;}
  .footer-grid{grid-template-columns:1fr;}
  .faq-item summary{font-size:15.5px;gap:16px;}
  .search-inner{padding:16px;}
  .search-inner input{min-height:44px;}
  .strip{grid-template-columns:1fr;}
  .strip .cell{border-right:0;border-bottom:1px solid var(--line-dark);}
  .strip .cell:nth-child(3){border-bottom:1px solid var(--line-dark);}
}

/* roulang page: category2 */
:root{
  --ink:#14110E;
  --ink-soft:#241F1A;
  --paper:#F6F3EE;
  --white:#FFFFFF;
  --accent:#C4472B;
  --accent-dark:#A6371F;
  --green:#2F4A3B;
  --muted:#6B6259;
  --line:#E3DDD4;
  --radius-card:8px;
  --radius-frame:12px;
  --radius-btn:4px;
  --shadow-sm:0 1px 2px rgba(20,17,14,.06);
  --shadow-md:0 14px 36px rgba(20,17,14,.08);
  --font-serif:"Noto Serif SC","Songti SC","STSong","SimSun",serif;
  --font-sans:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --nav-h:64px;
  --sec:112px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-sans);
  font-size:16.5px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-family:var(--font-serif);font-weight:700;letter-spacing:-.012em}
p{margin:0}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:2px}
::selection{background:rgba(196,71,43,.18)}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(246,243,238,.94);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:border-color .2s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--line)}
.nav-inner{
  max-width:1200px;margin:0 auto;padding:0 32px;
  height:var(--nav-h);display:flex;align-items:center;gap:20px;
}
.brand{
  display:flex;align-items:baseline;gap:6px;
  font-family:var(--font-serif);font-size:20px;font-weight:700;letter-spacing:.02em;
  white-space:nowrap;flex-shrink:0;
}
.brand-kicker{
  font-family:var(--font-sans);font-size:11px;font-weight:500;
  letter-spacing:.18em;color:var(--muted);
}
.nav-links{display:flex;align-items:center;gap:2px}
.nav-links a{
  position:relative;display:inline-block;
  padding:8px 12px;font-size:14px;color:var(--muted);
  border-radius:var(--radius-btn);
  transition:color .15s ease,background .15s ease;
  white-space:nowrap;
}
.nav-links a:hover{color:var(--ink);background:rgba(20,17,14,.045)}
.nav-links a.is-active{color:var(--ink);font-weight:600}
.nav-links a.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:1px;
  height:2px;background:var(--accent);border-radius:1px;
}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:10px}
.icon-btn{
  width:38px;height:38px;display:grid;place-items:center;
  border:1px solid var(--line);background:transparent;border-radius:var(--radius-btn);
  color:var(--ink);transition:background .15s ease,color .15s ease,border-color .15s ease;
}
.icon-btn:hover{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.icon-btn svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.burger{display:none}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:42px;padding:0 18px;border-radius:var(--radius-btn);
  font-size:14px;font-weight:600;border:1px solid transparent;
  transition:background .15s ease,color .15s ease,border-color .15s ease,box-shadow .15s ease;
  white-space:nowrap;
}
.btn .arrow{display:inline-block;transition:transform .15s ease;font-style:normal}
.btn:hover .arrow{transform:translateX(4px)}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-dark)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.btn-lg{height:48px;padding:0 24px;font-size:15px}

.search-bar{
  max-height:0;overflow:hidden;background:var(--white);
  border-bottom:1px solid transparent;
  transition:max-height .25s ease,border-color .25s ease;
}
.search-bar.is-open{max-height:96px;border-bottom-color:var(--line)}
.search-bar .container{display:flex;align-items:center;gap:12px;padding-top:16px;padding-bottom:16px}
.search-bar input{
  flex:1;height:44px;padding:0 14px;font-size:15px;font-family:inherit;
  color:var(--ink);background:var(--paper);
  border:1px solid var(--line);border-radius:var(--radius-btn);
}
.search-bar input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(196,71,43,.12)}

/* 移动端抽屉 */
.mobile-drawer{
  position:fixed;inset:0;z-index:200;background:var(--paper);
  display:flex;flex-direction:column;padding:18px 24px 32px;
  transform:translateY(-102%);visibility:hidden;
  transition:transform .28s cubic-bezier(.4,0,.2,1),visibility .28s;
}
.mobile-drawer.is-open{transform:translateY(0);visibility:visible}
.drawer-head{display:flex;align-items:center;justify-content:space-between;height:44px}
.drawer-links{margin-top:28px;display:flex;flex-direction:column;border-top:1px solid var(--line)}
.drawer-links a{
  padding:16px 2px;font-family:var(--font-serif);font-size:20px;font-weight:700;
  border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;
}
.drawer-links a span{font-family:var(--font-sans);font-size:12px;color:var(--muted);font-weight:400}
.drawer-links a.is-active{color:var(--accent)}
.drawer-foot{margin-top:auto;padding-top:24px;font-size:14px;color:var(--muted);line-height:2}
.drawer-foot strong{color:var(--ink);display:block;font-size:15px;margin-bottom:4px}

/* ============ 通用区块 ============ */
.section{padding:var(--sec) 0}
.section-alt{background:var(--white)}
.section-dark{background:var(--ink);color:var(--paper)}
.sec-head{margin-bottom:40px;max-width:720px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.14em;color:var(--accent);font-weight:600;
  margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--accent)}
.sec-head h2{font-size:clamp(1.6rem,3vw,2.5rem);line-height:1.18}
.sec-head p{margin-top:14px;color:var(--muted);font-size:16px;max-width:44em}
.section-dark .sec-head p{color:rgba(246,243,238,.68)}

.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;letter-spacing:.08em;font-weight:500;
  padding:5px 10px;border-radius:var(--radius-btn);line-height:1.6;
}
.badge-outline{border:1px solid var(--line);color:var(--muted);background:rgba(255,255,255,.65)}
.badge-green{background:rgba(47,74,59,.1);color:var(--green)}
.badge-accent{background:rgba(196,71,43,.1);color:var(--accent)}

/* ============ 页头 ============ */
.page-hero{position:relative;padding:56px 0 72px;border-bottom:1px solid var(--line);overflow:hidden}
.page-hero::after{
  content:"";position:absolute;top:-120px;right:-160px;width:520px;height:520px;
  background:radial-gradient(circle,rgba(196,71,43,.08),transparent 68%);
  pointer-events:none;
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:30px;position:relative;z-index:1}
.breadcrumb a{transition:color .15s ease}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb .sep{opacity:.5}
.hero-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:56px;align-items:end;position:relative;z-index:1}
.page-hero h1{
  font-size:clamp(2rem,4.2vw,3.5rem);line-height:1.06;letter-spacing:-.022em;
  margin:18px 0 20px;
}
.hero-sub{font-size:17px;color:var(--muted);max-width:33em;margin-bottom:30px;line-height:1.8}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px}
.hero-aside{display:flex;flex-direction:column;gap:22px}
.hero-figure{
  margin:0;border-radius:var(--radius-frame);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow-md);
  aspect-ratio:4/3;background:var(--line);
}
.hero-figure img{width:100%;height:100%;object-fit:cover}
.stat-list{
  display:grid;grid-template-columns:repeat(3,1fr);gap:14px;
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  padding:16px 0;
}
.stat-list li{display:flex;flex-direction:column;gap:2px;padding-left:14px;border-left:1px solid var(--line)}
.stat-list li:first-child{padding-left:0;border-left:0}
.stat-list strong{font-family:var(--font-serif);font-size:22px;line-height:1.2}
.stat-list span{font-size:12px;color:var(--muted);line-height:1.5}

/* ============ 分栏 + 粘性目录 ============ */
.split{display:grid;grid-template-columns:236px minmax(0,1fr);gap:64px;align-items:start}
.toc{position:sticky;top:88px}
.toc-title{
  font-size:12px;letter-spacing:.14em;color:var(--muted);
  font-weight:600;margin-bottom:14px;
}
.toc ol{display:flex;flex-direction:column;border-left:1px solid var(--line)}
.toc a{
  display:block;padding:8px 0 8px 16px;font-size:14px;color:var(--muted);
  border-left:2px solid transparent;margin-left:-1px;
  transition:color .15s ease,border-color .15s ease,background .15s ease;
}
.toc a:hover{color:var(--ink);border-left-color:var(--accent);background:rgba(196,71,43,.045)}
.toc-note{
  margin-top:22px;padding:16px;border:1px solid var(--line);border-radius:var(--radius-card);
  background:var(--paper);font-size:13px;color:var(--muted);line-height:1.75;
}
.toc-note strong{display:block;color:var(--ink);font-size:14px;margin-bottom:6px}

/* ============ 编号长条目 ============ */
.pillar-list{border-top:1px solid var(--line)}
.pillar{
  display:grid;grid-template-columns:76px minmax(0,1fr);gap:24px;
  padding:34px 0;border-bottom:1px solid var(--line);
  scroll-margin-top:88px;
}
.pillar-num{
  font-family:var(--font-serif);font-size:32px;font-weight:700;
  color:var(--accent);line-height:1;padding-top:6px;letter-spacing:-.02em;
}
.pillar h3{font-size:22px;line-height:1.35;margin-bottom:10px}
.pillar p{color:var(--muted);font-size:15.5px;line-height:1.8;max-width:46em}
.pillar ul{margin-top:16px;display:flex;flex-direction:column;gap:7px}
.pillar li{
  position:relative;padding-left:18px;font-size:14.5px;color:var(--ink);line-height:1.7;
}
.pillar li::before{
  content:"";position:absolute;left:0;top:.72em;
  width:6px;height:6px;border-radius:50%;background:var(--green);
}
.pillar-tag{
  margin-top:16px;display:inline-flex;align-items:center;gap:6px;
  font-size:12px;letter-spacing:.06em;color:var(--green);
  background:rgba(47,74,59,.08);padding:4px 10px;border-radius:var(--radius-btn);
}

/* ============ 适用场景 ============ */
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.scene-card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px 24px;transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.scene-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:#D6CEC2}
.scene-card .idx{
  font-family:var(--font-serif);font-size:13px;color:var(--accent);
  letter-spacing:.08em;margin-bottom:12px;display:block;
}
.scene-card h3{font-size:18px;margin-bottom:8px;line-height:1.4}
.scene-card p{font-size:14.5px;color:var(--muted);line-height:1.75}

/* ============ 流程 ============ */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line)}
.flow li{
  padding:26px 22px 26px 0;border-bottom:1px solid var(--line);
  position:relative;
}
.flow li + li{padding-left:22px;border-left:1px solid var(--line)}
.flow .step{
  font-family:var(--font-serif);font-size:30px;font-weight:700;
  color:var(--accent);line-height:1;margin-bottom:14px;display:block;
}
.flow h3{font-size:16.5px;margin-bottom:8px}
.flow p{font-size:14px;color:var(--muted);line-height:1.7}

/* ============ 数据带 ============ */
.metric-band{display:grid;grid-template-columns:repeat(4,1fr);gap:32px}
.metric-band li{border-top:1px solid rgba(246,243,238,.22);padding-top:18px}
.metric-band .num{
  display:block;font-family:var(--font-serif);font-size:clamp(2rem,3.4vw,2.9rem);
  line-height:1.05;color:var(--paper);
}
.metric-band .num em{font-style:normal;font-size:.5em;color:var(--accent);margin-left:4px}
.metric-band .lbl{display:block;margin-top:8px;font-size:13.5px;color:rgba(246,243,238,.66);line-height:1.6}

/* ============ FAQ ============ */
.faq{border-top:1px solid var(--line);max-width:840px}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 0;font-size:17px;font-weight:600;color:var(--ink);
  transition:color .15s ease;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary:hover{color:var(--accent)}
.faq summary .mark{
  position:relative;flex-shrink:0;width:16px;height:16px;
}
.faq summary .mark::before,
.faq summary .mark::after{
  content:"";position:absolute;background:var(--accent);border-radius:1px;
  transition:transform .2s ease,opacity .2s ease;
}
.faq summary .mark::before{left:0;top:7px;width:16px;height:2px}
.faq summary .mark::after{left:7px;top:0;width:2px;height:16px}
.faq details[open] summary .mark::after{transform:scaleY(0);opacity:0}
.faq .answer{padding:0 0 24px;font-size:15.5px;line-height:1.85;color:var(--muted);max-width:44em}

/* ============ CTA 带 ============ */
.cta-band{background:var(--ink);color:var(--paper);padding:72px 0}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap}
.cta-band h2{font-size:clamp(1.5rem,2.6vw,2.2rem);line-height:1.25;margin-bottom:12px}
.cta-band p{font-size:15px;color:rgba(246,243,238,.7);max-width:34em;line-height:1.8}
.cta-actions{display:flex;align-items:center;gap:20px;flex-wrap:wrap}
.link-line{
  color:var(--paper);font-size:14px;font-weight:500;
  border-bottom:1px solid rgba(246,243,238,.4);padding-bottom:2px;
  transition:color .15s ease,border-color .15s ease;
}
.link-line:hover{color:var(--accent);border-color:var(--accent)}

/* ============ 站内闭环 ============ */
.return-band{padding:56px 0;border-top:1px solid var(--line)}
.return-inner{display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap}
.return-inner h2{font-size:20px;margin-bottom:6px}
.return-inner p{font-size:14.5px;color:var(--muted)}
.chip-links{display:flex;flex-wrap:wrap;gap:10px}
.chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 16px;font-size:14px;
  border:1px solid var(--line);border-radius:var(--radius-btn);
  background:var(--white);color:var(--ink);
  transition:background .15s ease,color .15s ease,border-color .15s ease,transform .15s ease;
}
.chip:hover{background:var(--ink);color:var(--paper);border-color:var(--ink);transform:translateY(-1px)}
.chip .arrow{transition:transform .15s ease}
.chip:hover .arrow{transform:translateX(3px)}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink);color:var(--paper);padding:72px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:48px;padding-bottom:56px}
.f-logo{font-family:var(--font-serif);font-size:20px;font-weight:700;margin-bottom:16px;letter-spacing:.02em}
.footer-brand p{font-size:14px;line-height:1.85;color:rgba(246,243,238,.65);max-width:26em}
.footer-col h4{
  font-family:var(--font-sans);font-size:13px;font-weight:600;
  letter-spacing:.1em;color:rgba(246,243,238,.55);margin-bottom:18px;
}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a{
  position:relative;font-size:14px;color:rgba(246,243,238,.82);
  transition:color .15s ease;
  display:inline-block;
}
.footer-col a::before{
  content:"";position:absolute;left:-12px;top:50%;width:8px;height:1px;
  background:var(--accent);opacity:0;transform:translateY(-50%);
  transition:opacity .15s ease,left .15s ease;
}
.footer-col a:hover{color:var(--accent)}
.footer-col a:hover::before{opacity:1;left:-14px}
.footer-contact li{font-size:14px;color:rgba(246,243,238,.82);line-height:1.7}
.footer-contact .label{
  display:block;font-size:12px;color:rgba(246,243,238,.45);
  letter-spacing:.08em;margin-bottom:2px;
}
.footer-bottom{
  border-top:1px solid rgba(246,243,238,.14);
  padding:22px 0 26px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(246,243,238,.5);
}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(10px);transition:opacity .5s ease,transform .5s ease}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important}
  .reveal{opacity:1;transform:none}
}

/* ============ 响应式 ============ */
@media (max-width:1280px){
  :root{--sec:96px}
  .container{padding:0 28px}
  .nav-inner{padding:0 28px}
  .split{grid-template-columns:212px minmax(0,1fr);gap:48px}
}
@media (max-width:1024px){
  :root{--sec:80px}
  .nav-links{display:none}
  .burger{display:grid}
  .hero-grid{grid-template-columns:1fr;gap:36px;align-items:start}
  .hero-aside{flex-direction:row;align-items:center;gap:28px}
  .hero-figure{flex:1;max-width:320px;aspect-ratio:3/4}
  .stat-list{flex:1.4;grid-template-columns:1fr;gap:0;border-bottom:0}
  .stat-list li{padding:12px 0;border-left:0;border-top:1px solid var(--line)}
  .stat-list li:first-child{border-top:1px solid var(--line)}
  .split{grid-template-columns:1fr;gap:32px}
  .toc{position:static}
  .toc ol{flex-direction:row;flex-wrap:wrap;border-left:0;gap:8px}
  .toc a{
    border:1px solid var(--line);border-radius:var(--radius-btn);
    padding:7px 12px;margin-left:0;font-size:13px;background:var(--white);
  }
  .toc a:hover{border-color:var(--accent)}
  .toc-note{display:none}
  .scene-grid{grid-template-columns:repeat(2,1fr)}
  .flow{grid-template-columns:repeat(2,1fr)}
  .flow li + li{padding-left:0;border-left:0}
  .flow li{padding:24px 20px 24px 0}
  .flow li:nth-child(even){padding-left:20px;border-left:1px solid var(--line)}
  .metric-band{grid-template-columns:repeat(2,1fr);gap:26px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px}
}
@media (max-width:768px){
  :root{--sec:60px;--nav-h:56px}
  body{font-size:16px}
  .container{padding:0 20px}
  .nav-inner{padding:0 20px;gap:12px}
  .nav-right .btn-primary{display:none}
  .page-hero{padding:40px 0 52px}
  .breadcrumb{margin-bottom:22px;font-size:12.5px}
  .page-hero h1{font-size:clamp(1.75rem,7vw,2.4rem)}
  .hero-sub{font-size:15.5px;margin-bottom:24px}
  .hero-aside{flex-direction:column;align-items:stretch;gap:20px}
  .hero-figure{max-width:320px;margin:0 auto;aspect-ratio:3/4}
  .pillar{grid-template-columns:1fr;gap:10px;padding:28px 0}
  .pillar-num{font-size:26px;padding-top:0}
  .pillar h3{font-size:19px}
  .pillar p{font-size:15px}
  .scene-grid{grid-template-columns:1fr}
  .flow{grid-template-columns:1fr}
  .flow li,.flow li:nth-child(even){padding:20px 0;border-left:0}
  .metric-band{grid-template-columns:1fr 1fr;gap:20px}
  .faq summary{font-size:15.5px;padding:18px 0}
  .faq .answer{font-size:15px}
  .cta-band{padding:52px 0}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:26px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding-bottom:40px}
  .footer-brand{grid-column:1 / -1}
  .site-footer{padding-top:52px}
  .btn{height:44px}
}
@media (max-width:560px){
  .nav-right{gap:8px}
  .btn-lg{height:46px;padding:0 20px;font-size:14px}
  .return-inner{flex-direction:column;align-items:flex-start;gap:18px}
  .chip-links{width:100%}
  .chip{flex:1 1 46%;justify-content:space-between}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:6px}
  .metric-band{grid-template-columns:1fr}
  .hero-actions .btn{flex:1 1 100%}
}

/* roulang page: category3 */
:root{
  --ink:#14110E;
  --ink-soft:#231E19;
  --paper:#FFFFFF;
  --sand:#F6F3EE;
  --clay:#C4472B;
  --pine:#2F4A3B;
  --muted:#6B6259;
  --line:#E3DDD4;
  --inv:#F6F3EE;
  --r-card:8px;
  --r-frame:12px;
  --r-btn:4px;
  --shadow-1:0 1px 2px rgba(20,17,14,.06);
  --shadow-2:0 20px 44px -28px rgba(20,17,14,.32);
  --container:1200px;
  --gap:28px;
  --nav-h:64px;
  --font-serif:"Noto Serif SC","Songti SC","Source Han Serif SC","SimSun",serif;
  --font-sans:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
}
*,*::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:16.5px;
  line-height:1.75;
  color:var(--ink);
  background:var(--sand);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font: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(--clay);outline-offset:2px;}

/* ---------- 容器 ---------- */
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 32px;
}
.section{padding:96px 0;}
.section--tight{padding:64px 0;}
.section--sand{background:var(--sand);}
.section--paper{background:var(--paper);}
.section--ink{background:var(--ink);color:var(--inv);}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(246,243,238,.94);
  backdrop-filter:saturate(140%) blur(8px);
  border-bottom:1px solid transparent;
  transition:border-color .2s ease, background .2s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--line);background:rgba(246,243,238,.98);}
.nav-inner{
  max-width:var(--container);
  margin:0 auto;
  padding:0 32px;
  height:var(--nav-h);
  display:flex;
  align-items:center;
  gap:28px;
}
.brand{
  display:inline-flex;
  align-items:baseline;
  gap:6px;
  font-family:var(--font-serif);
  font-size:20px;
  font-weight:700;
  letter-spacing:.02em;
  color:var(--ink);
  white-space:nowrap;
  flex-shrink:0;
}
.brand-kicker{
  font-family:var(--font-sans);
  font-size:11px;
  font-weight:500;
  letter-spacing:.16em;
  color:var(--muted);
  border:1px solid var(--line);
  border-radius:2px;
  padding:2px 5px;
  transform:translateY(-1px);
}
.nav-links{
  display:flex;
  align-items:center;
  gap:22px;
  margin-left:8px;
  flex-wrap:nowrap;
}
.nav-links a{
  position:relative;
  font-size:14.5px;
  color:var(--muted);
  padding:20px 0;
  white-space:nowrap;
  transition:color .18s ease;
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:14px;
  height:2px;
  background:var(--clay);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .22s ease;
}
.nav-links a:hover{color:var(--ink);}
.nav-links a:hover::after,
.nav-links a.is-active::after{transform:scaleX(1);}
.nav-links a.is-active{color:var(--ink);font-weight:600;}
.nav-right{
  margin-left:auto;
  display:flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.icon-btn{
  width:40px;
  height:40px;
  display:inline-grid;
  place-items:center;
  border:1px solid var(--line);
  background:transparent;
  border-radius:var(--r-btn);
  cursor:pointer;
  transition:background .18s ease,border-color .18s ease,transform .18s ease;
}
.icon-btn svg{
  width:18px;height:18px;
  fill:none;stroke:currentColor;stroke-width:1.6;
  stroke-linecap:round;stroke-linejoin:round;
}
.icon-btn:hover{background:var(--paper);border-color:var(--ink);}
.burger{display:none;}

/* 按钮 */
.btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  min-height:44px;
  padding:11px 20px;
  font-size:14.5px;
  font-weight:600;
  letter-spacing:.01em;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  cursor:pointer;
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.btn .arrow{
  font-style:normal;
  display:inline-block;
  transition:transform .18s ease;
}
.btn:hover .arrow{transform:translateX(4px);}
.btn-primary{background:var(--clay);color:#fff;border-color:var(--clay);}
.btn-primary:hover{background:#A93A22;border-color:#A93A22;box-shadow:var(--shadow-1);}
.btn-dark{background:var(--ink);color:var(--inv);border-color:var(--ink);}
.btn-dark:hover{background:#000;border-color:#000;box-shadow:var(--shadow-1);}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line);}
.btn-ghost:hover{background:var(--ink);color:var(--inv);border-color:var(--ink);}
.btn-ghost-inv{background:transparent;color:var(--inv);border-color:rgba(246,243,238,.34);}
.btn-ghost-inv:hover{background:var(--inv);color:var(--ink);border-color:var(--inv);}
.link-underline{
  position:relative;
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14.5px;
  font-weight:600;
  color:var(--clay);
  padding-bottom:2px;
}
.link-underline::after{
  content:"";
  position:absolute;
  left:0;bottom:0;
  width:100%;height:1px;
  background:currentColor;
  transform:scaleX(1);
  transform-origin:left center;
  transition:transform .22s ease;
}
.link-underline:hover::after{transform:scaleX(0);transform-origin:right center;}

/* 搜索面板 */
.search-panel{
  display:none;
  border-bottom:1px solid var(--line);
  background:var(--paper);
}
.search-panel.is-open{display:block;}
.search-form{
  max-width:var(--container);
  margin:0 auto;
  padding:16px 32px;
  display:flex;
  gap:10px;
}
.search-form input{
  flex:1;
  min-height:44px;
  padding:10px 14px;
  font-size:15px;
  font-family:var(--font-sans);
  color:var(--ink);
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  transition:border-color .18s ease,box-shadow .18s ease;
}
.search-form input::placeholder{color:#9A9088;}
.search-form input:focus{
  outline:none;
  border-color:var(--clay);
  box-shadow:0 0 0 3px rgba(196,71,43,.14);
}

/* 移动抽屉 */
.drawer{
  position:fixed;
  inset:0;
  z-index:90;
  background:var(--sand);
  display:flex;
  flex-direction:column;
  transform:translateY(-8px);
  opacity:0;
  visibility:hidden;
  transition:opacity .22s ease,transform .22s ease,visibility .22s;
}
.drawer.is-open{opacity:1;visibility:visible;transform:translateY(0);}
.drawer-head{
  height:56px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:0 20px;
  border-bottom:1px solid var(--line);
}
.drawer-nav{
  padding:8px 20px 20px;
  overflow-y:auto;
  flex:1;
}
.drawer-nav a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  min-height:56px;
  font-family:var(--font-serif);
  font-size:21px;
  font-weight:600;
  border-bottom:1px solid var(--line);
  color:var(--ink);
}
.drawer-nav a.is-active{color:var(--clay);}
.drawer-nav a span{font-size:13px;font-family:var(--font-sans);font-weight:500;color:var(--muted);}
.drawer-foot{
  padding:20px;
  border-top:1px solid var(--line);
  font-size:13.5px;
  color:var(--muted);
  line-height:1.9;
}
.drawer-foot strong{display:block;color:var(--ink);font-size:14px;margin-bottom:4px;}

/* ---------- 内页 Hero ---------- */
.page-hero{
  position:relative;
  overflow:hidden;
  background:var(--ink);
  color:var(--inv);
  border-bottom:1px solid rgba(246,243,238,.12);
}
.page-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(100deg,rgba(20,17,14,.94) 0%,rgba(20,17,14,.82) 48%,rgba(20,17,14,.52) 100%),url("/assets/images/backpic/back-1.webp");
  background-size:cover;
  background-position:center;
  filter:saturate(88%);
}
.page-hero .container{position:relative;z-index:2;}
.hero-pad{padding:calc(var(--nav-h) + 24px) 0 72px;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:rgba(246,243,238,.72);
  border:1px solid rgba(246,243,238,.28);
  border-radius:2px;
  padding:6px 12px;
  margin-bottom:26px;
}
.dot{
  width:6px;height:6px;
  border-radius:50%;
  background:var(--clay);
  display:inline-block;
  flex-shrink:0;
}
.eyebrow .dot{box-shadow:0 0 0 3px rgba(196,71,43,.24);}
.page-hero h1{
  font-family:var(--font-serif);
  font-size:clamp(2.1rem,4.6vw,3.8rem);
  font-weight:700;
  line-height:1.08;
  letter-spacing:-.01em;
  max-width:19ch;
}
.page-hero .hero-sub{
  margin-top:22px;
  max-width:56ch;
  font-size:17px;
  line-height:1.8;
  color:rgba(246,243,238,.78);
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:32px;
}
.hero-metrics{
  display:flex;
  flex-wrap:wrap;
  gap:36px;
  margin-top:52px;
  padding-top:28px;
  border-top:1px solid rgba(246,243,238,.16);
}
.hero-metric .num{
  font-family:var(--font-sans);
  font-size:clamp(1.5rem,2.4vw,2rem);
  font-weight:700;
  font-variant-numeric:tabular-nums;
  letter-spacing:-.02em;
  display:block;
  line-height:1.1;
}
.hero-metric .num i{font-style:normal;font-size:.6em;color:var(--clay);margin-left:2px;}
.hero-metric .lbl{
  display:block;
  margin-top:6px;
  font-size:12.5px;
  letter-spacing:.08em;
  color:rgba(246,243,238,.6);
}

/* ---------- 状态条 ---------- */
.status-strip{
  background:var(--ink);
  color:var(--inv);
  border-bottom:1px solid rgba(246,243,238,.14);
}
.status-inner{
  display:flex;
  align-items:center;
  gap:14px;
  flex-wrap:wrap;
  padding:14px 0;
  font-size:13px;
  letter-spacing:.04em;
  color:rgba(246,243,238,.68);
}
.status-inner .chip{
  border:1px solid rgba(246,243,238,.24);
  border-radius:2px;
  padding:4px 10px;
  font-size:12px;
  color:rgba(246,243,238,.86);
}
.status-inner .sep{color:rgba(246,243,238,.28);}

/* ---------- 区块标题 ---------- */
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:32px;
  margin-bottom:44px;
}
.section-head .kicker{
  font-size:12px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--clay);
  font-weight:600;
  display:block;
  margin-bottom:14px;
}
.section-head h2{
  font-family:var(--font-serif);
  font-size:clamp(1.6rem,3vw,2.6rem);
  line-height:1.16;
  font-weight:700;
  max-width:22ch;
}
.section-head p{
  margin-top:14px;
  max-width:52ch;
  font-size:15.5px;
  color:var(--muted);
  line-height:1.8;
}
.section-head .head-link{flex-shrink:0;padding-bottom:6px;}

/* ---------- 案例交错卡 ---------- */
.case-list{border-top:1px solid var(--line);}
.case-row{
  display:grid;
  grid-template-columns:1.12fr .88fr;
  gap:40px;
  align-items:center;
  padding:44px 0;
  border-bottom:1px solid var(--line);
}
.case-row:nth-child(even) .case-media{order:2;}
.case-media{
  position:relative;
  border-radius:var(--r-frame);
  overflow:hidden;
  background:#EDE8E1;
  box-shadow:var(--shadow-1);
}
.case-media figure{margin:0;position:relative;aspect-ratio:16/10;overflow:hidden;}
.case-media img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .5s ease;
}
.case-row:hover .case-media img{transform:scale(1.03);}
.case-media .media-tag{
  position:absolute;
  left:14px;top:14px;
  display:inline-flex;
  align-items:center;
  gap:6px;
  background:rgba(20,17,14,.82);
  color:var(--inv);
  font-size:12px;
  letter-spacing:.08em;
  padding:5px 10px;
  border-radius:2px;
  backdrop-filter:blur(3px);
}
.case-media .media-index{
  position:absolute;
  right:14px;bottom:12px;
  font-family:var(--font-serif);
  font-size:30px;
  font-weight:700;
  color:rgba(246,243,238,.9);
  text-shadow:0 2px 10px rgba(20,17,14,.5);
  line-height:1;
  font-variant-numeric:tabular-nums;
}
.case-body{display:flex;flex-direction:column;gap:16px;}
.case-body .cat{
  display:inline-flex;
  align-self:flex-start;
  align-items:center;
  gap:7px;
  font-size:12px;
  letter-spacing:.1em;
  color:var(--pine);
  background:rgba(47,74,59,.08);
  border:1px solid rgba(47,74,59,.18);
  border-radius:2px;
  padding:4px 10px;
}
.case-body h3{
  font-family:var(--font-serif);
  font-size:clamp(1.25rem,2vw,1.6rem);
  font-weight:700;
  line-height:1.34;
}
.case-body .result{
  font-size:15.5px;
  line-height:1.8;
  color:var(--muted);
  border-left:3px solid var(--clay);
  padding-left:14px;
  background:linear-gradient(90deg,rgba(196,71,43,.05),transparent 70%);
}
.case-meta{
  display:flex;
  flex-wrap:wrap;
  gap:18px;
  padding-top:4px;
  font-size:13px;
  color:var(--muted);
  letter-spacing:.03em;
}
.case-meta b{color:var(--ink);font-weight:600;font-variant-numeric:tabular-nums;}
.case-body .case-link{margin-top:4px;}

/* ---------- 数据面板 ---------- */
.data-band{
  position:relative;
  overflow:hidden;
  background:var(--ink);
  color:var(--inv);
}
.data-band::before{
  content:"";
  position:absolute;inset:0;
  background-image:linear-gradient(180deg,rgba(20,17,14,.9),rgba(20,17,14,.96)),url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center;
}
.data-band .container{position:relative;z-index:2;}
.data-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:32px;
  margin-bottom:40px;
}
.data-head h2{
  font-family:var(--font-serif);
  font-size:clamp(1.6rem,3vw,2.4rem);
  line-height:1.16;
}
.data-head p{color:rgba(246,243,238,.66);font-size:14.5px;max-width:44ch;margin-top:12px;}
.data-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  border-top:1px solid rgba(246,243,238,.18);
}
.data-item{
  padding:30px 24px 8px 0;
  border-right:1px solid rgba(246,243,238,.14);
}
.data-item:last-child{border-right:none;}
.data-item .val{
  font-family:var(--font-sans);
  font-size:clamp(2rem,3.6vw,3rem);
  font-weight:700;
  line-height:1;
  letter-spacing:-.03em;
  font-variant-numeric:tabular-nums;
}
.data-item .val em{font-style:normal;font-size:.5em;color:var(--clay);margin-left:3px;}
.data-item .cap{
  display:block;
  margin-top:12px;
  font-size:13px;
  letter-spacing:.06em;
  color:rgba(246,243,238,.62);
}

/* ---------- 流程 ---------- */
.flow-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:0;
  border-top:1px solid var(--line);
}
.flow-item{
  padding:30px 26px 30px 0;
  border-right:1px solid var(--line);
  position:relative;
}
.flow-item:last-child{border-right:none;padding-right:0;}
.flow-item .no{
  font-family:var(--font-serif);
  font-size:44px;
  font-weight:700;
  line-height:1;
  color:var(--clay);
  letter-spacing:-.02em;
  display:block;
  margin-bottom:18px;
}
.flow-item h3{
  font-size:1.05rem;
  font-weight:700;
  margin-bottom:10px;
  font-family:var(--font-serif);
}
.flow-item p{font-size:14.5px;color:var(--muted);line-height:1.8;}

/* ---------- 口碑 ---------- */
.voice-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:var(--gap);
}
.voice-card{
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:28px 26px;
  display:flex;
  flex-direction:column;
  gap:16px;
  transition:transform .2s ease,box-shadow .2s ease;
}
.voice-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);}
.stars{display:flex;gap:3px;color:var(--clay);font-size:14px;letter-spacing:2px;}
.voice-card p{font-size:15.5px;line-height:1.85;color:var(--ink);}
.voice-card .who{
  margin-top:auto;
  padding-top:16px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--muted);
  letter-spacing:.04em;
}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:22px 0;
  font-size:17px;
  font-weight:600;
  cursor:pointer;
  list-style:none;
  transition:color .18s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--clay);}
.faq-item summary::after{
  content:"+";
  font-family:var(--font-sans);
  font-size:22px;
  font-weight:400;
  line-height:1;
  color:var(--clay);
  transition:transform .2s ease;
  flex-shrink:0;
}
.faq-item[open] summary::after{transform:rotate(45deg);}
.faq-item .faq-body{
  padding:0 0 24px;
  font-size:15.5px;
  line-height:1.85;
  color:var(--muted);
  max-width:70ch;
}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--ink);
  color:var(--inv);
  padding:64px 0;
}
.cta-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:36px;
  flex-wrap:wrap;
}
.cta-inner h2{
  font-family:var(--font-serif);
  font-size:clamp(1.5rem,2.6vw,2.2rem);
  line-height:1.2;
  max-width:24ch;
}
.cta-inner p{margin-top:12px;font-size:15px;color:rgba(246,243,238,.66);max-width:46ch;}
.cta-actions{display:flex;align-items:center;gap:18px;flex-wrap:wrap;}

/* ---------- 链接带 ---------- */
.loop-band{
  background:var(--paper);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  padding:44px 0;
}
.loop-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  flex-wrap:wrap;
}
.loop-inner .loop-title{
  font-size:13px;
  letter-spacing:.16em;
  color:var(--muted);
  text-transform:uppercase;
}
.loop-links{display:flex;flex-wrap:wrap;gap:10px;}
.loop-links a{
  display:inline-flex;
  align-items:center;
  min-height:40px;
  padding:8px 16px;
  font-size:14px;
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  color:var(--ink);
  transition:background .18s ease,color .18s ease,border-color .18s ease;
}
.loop-links a:hover{background:var(--ink);color:var(--inv);border-color:var(--ink);}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--ink);
  color:var(--inv);
  padding:72px 0 28px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:44px;
  border-bottom:1px solid rgba(246,243,238,.16);
}
.f-logo{
  font-family:var(--font-serif);
  font-size:20px;
  font-weight:700;
  margin-bottom:16px;
}
.footer-brand p{
  font-size:14px;
  line-height:1.9;
  color:rgba(246,243,238,.62);
  max-width:36ch;
}
.footer-col h4{
  font-size:12px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:rgba(246,243,238,.5);
  margin-bottom:18px;
  font-weight:600;
}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a{
  position:relative;
  font-size:14px;
  color:rgba(246,243,238,.78);
  transition:color .18s ease,padding-left .18s ease;
}
.footer-col a::before{
  content:"";
  position:absolute;
  left:-14px;
  top:50%;
  width:8px;
  height:1px;
  background:var(--clay);
  opacity:0;
  transition:opacity .18s ease;
}
.footer-col a:hover{color:var(--clay);padding-left:14px;}
.footer-col a:hover::before{opacity:1;}
.footer-contact li{
  font-size:14px;
  color:rgba(246,243,238,.78);
  line-height:1.9;
}
.footer-contact .label{
  display:block;
  font-size:11.5px;
  letter-spacing:.12em;
  color:rgba(246,243,238,.44);
  text-transform:uppercase;
}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  flex-wrap:wrap;
  padding-top:24px;
  font-size:12.5px;
  color:rgba(246,243,238,.46);
  letter-spacing:.03em;
}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(10px);transition:opacity .5s ease,transform .5s ease;}
.reveal.is-in{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1280px){
  .nav-links{gap:16px;}
  .nav-links a{font-size:14px;}
}
@media (max-width:1100px){
  .nav-links{display:none;}
  .burger{display:inline-grid;}
  .nav-inner{gap:16px;}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px;}
  .footer-brand{grid-column:1 / -1;}
}
@media (max-width:1024px){
  .section{padding:76px 0;}
  .case-row{grid-template-columns:1fr 1fr;gap:28px;}
  .data-grid{grid-template-columns:repeat(2,1fr);}
  .data-item{padding:26px 20px 26px 0;border-bottom:1px solid rgba(246,243,238,.14);}
  .data-item:nth-child(2n){border-right:none;}
  .flow-grid{grid-template-columns:repeat(2,1fr);}
  .flow-item{border-bottom:1px solid var(--line);}
  .flow-item:nth-child(2n){border-right:none;padding-right:0;}
  .voice-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:768px){
  .container,.nav-inner,.search-form{padding-left:20px;padding-right:20px;}
  .section{padding:56px 0;}
  .hero-pad{padding:calc(var(--nav-h) + 24px) 0 52px;}
  .page-hero h1{max-width:100%;}
  .hero-metrics{gap:24px;margin-top:36px;padding-top:22px;}
  .hero-metric{min-width:120px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:18px;margin-bottom:32px;}
  .case-row{grid-template-columns:1fr;gap:22px;padding:36px 0;}
  .case-row:nth-child(even) .case-media{order:0;}
  .case-media .media-index{font-size:24px;}
  .data-head{flex-direction:column;align-items:flex-start;gap:16px;}
  .data-grid{grid-template-columns:1fr 1fr;}
  .flow-grid{grid-template-columns:1fr;}
  .flow-item{border-right:none;padding-right:0;}
  .voice-grid{grid-template-columns:1fr;}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:24px;}
  .loop-inner{flex-direction:column;align-items:flex-start;gap:16px;}
  .status-inner{font-size:12px;gap:10px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .site-footer{padding:56px 0 24px;}
}
@media (max-width:520px){
  body{font-size:16px;}
  .brand{font-size:18px;}
  .nav-right .btn-primary{display:none;}
  .hero-actions .btn{width:100%;justify-content:center;}
  .data-grid{grid-template-columns:1fr;}
  .data-item{border-right:none;padding-right:0;}
  .footer-grid{grid-template-columns:1fr;}
  .faq-item summary{font-size:15.5px;padding:18px 0;}
  .drawer-nav a{font-size:19px;min-height:52px;}
  .case-meta{gap:12px;font-size:12.5px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category4 */
:root{
  --ink:#14110E;
  --ink-deep:#0C0A08;
  --bg:#F6F3EE;
  --paper:#FFFFFF;
  --accent:#C4472B;
  --green:#2F4A3B;
  --muted:#6B6259;
  --line:#E3DDD4;
  --inv:#F6F3EE;
  --soft:#FBFAF7;
  --nav-h:64px;
  --nav-h-m:56px;
  --r-card:8px;
  --r-frame:12px;
  --r-btn:4px;
  --shadow-1:0 1px 2px rgba(20,17,14,.06);
  --shadow-2:0 18px 40px -26px rgba(20,17,14,.32);
  --font-display:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --font-body:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-num:"Inter","Helvetica Neue",Arial,var(--font-body);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{list-style:none;margin:0;padding:0}
h1,h2,h3,h4{font-family:var(--font-display);margin:0;font-weight:700;letter-spacing:.01em}
p{margin:0}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
::selection{background:var(--accent);color:#fff}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.section{padding:clamp(56px,7vw,96px) 0}
.section-head{max-width:720px;margin-bottom:clamp(24px,3vw,40px)}
.section-kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.16em;color:var(--muted);
  text-transform:uppercase;margin-bottom:14px;
}
.section-kicker::before{content:"";width:18px;height:1px;background:var(--accent)}
h2{font-size:clamp(1.6rem,3vw,2.6rem);line-height:1.18}
.section-desc{margin-top:14px;color:var(--muted);font-size:1rem;line-height:1.8;max-width:640px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(246,243,238,.94);
  -webkit-backdrop-filter:saturate(150%) blur(10px);
  backdrop-filter:saturate(150%) blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 1px 0 rgba(20,17,14,.02)}
.nav-inner{
  max-width:1280px;margin:0 auto;padding:0 32px;
  height:var(--nav-h);display:flex;align-items:center;gap:26px;
}
.brand{
  font-family:var(--font-display);font-size:1.14rem;font-weight:700;
  display:inline-flex;align-items:baseline;gap:7px;letter-spacing:.02em;white-space:nowrap;
}
.brand-kicker{
  font-family:var(--font-body);font-size:.7rem;font-weight:400;
  letter-spacing:.2em;color:var(--muted);
}
.nav-links{display:flex;align-items:center;gap:22px}
.nav-links a{
  position:relative;font-size:.92rem;color:#3E362E;padding:6px 0;
  transition:color .18s ease;white-space:nowrap;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--accent);transform:scaleX(0);transform-origin:left;
  transition:transform .2s ease;
}
.nav-links a:hover{color:var(--ink)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.is-active{color:var(--ink);font-weight:600}
.nav-links a.is-active::after{transform:scaleX(1)}
.nav-right{display:flex;align-items:center;gap:10px;margin-left:auto}
.icon-btn{
  width:38px;height:38px;display:grid;place-items:center;
  border:1px solid transparent;border-radius:var(--r-btn);
  transition:background .18s ease,border-color .18s ease;
}
.icon-btn svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.icon-btn:hover{background:var(--paper);border-color:var(--line)}
.burger{display:none}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  min-height:44px;padding:0 20px;border-radius:var(--r-btn);
  font-size:.93rem;font-weight:600;letter-spacing:.02em;
  border:1px solid transparent;cursor:pointer;
  transition:background .18s ease,color .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.btn .arrow{display:inline-block;transition:transform .15s ease;font-family:var(--font-body)}
.btn:hover .arrow{transform:translateX(4px)}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--ink);color:var(--inv)}
.btn-primary:hover{background:var(--ink-deep)}
.btn-ghost{border-color:#CFC7BB;color:var(--ink);background:transparent}
.btn-ghost:hover{background:var(--ink);color:var(--inv);border-color:var(--ink)}
.btn-light{background:var(--inv);color:var(--ink)}
.btn-light:hover{background:var(--accent);color:#fff}
.btn-sm{min-height:38px;padding:0 16px;font-size:.86rem}
.link-underline{
  position:relative;display:inline-flex;align-items:center;gap:8px;
  font-size:.93rem;font-weight:600;padding-bottom:3px;
}
.link-underline::after{
  content:"";position:absolute;left:0;bottom:0;height:1px;width:100%;
  background:currentColor;transform:scaleX(0);transform-origin:left;
  transition:transform .22s ease;
}
.link-underline:hover::after{transform:scaleX(1)}
.link-underline:hover{color:var(--accent)}
.link-underline .arrow{transition:transform .15s ease}
.link-underline:hover .arrow{transform:translateX(4px)}

/* ---------- search drawer ---------- */
.search-drawer{border-bottom:1px solid var(--line);background:var(--paper);display:none}
.search-drawer.is-open{display:block}
.search-form{
  max-width:1280px;margin:0 auto;padding:18px 32px;
  display:flex;gap:12px;align-items:center;
}
.search-form input{
  flex:1;min-height:44px;padding:0 14px;font-size:.95rem;
  border:1px solid var(--line);border-radius:var(--r-btn);
  background:var(--paper);color:var(--ink);font-family:var(--font-body);
}
.search-form input::placeholder{color:#9C9389}
.search-form input:focus{
  outline:none;border-color:var(--accent);
  box-shadow:0 0 0 3px rgba(196,71,43,.14);
}

/* ---------- mobile drawer ---------- */
.nav-drawer{
  position:fixed;inset:0;z-index:90;background:var(--bg);
  padding:22px 24px 32px;display:none;flex-direction:column;
  overflow-y:auto;
}
.nav-drawer.is-open{display:flex}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px}
.drawer-title{font-family:var(--font-display);font-size:1.1rem;font-weight:700}
.drawer-close{width:40px;height:40px;display:grid;place-items:center;border:1px solid var(--line);border-radius:var(--r-btn);background:var(--paper)}
.drawer-close svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round}
.drawer-links a{
  display:flex;align-items:center;justify-content:space-between;
  padding:16px 0;border-bottom:1px solid var(--line);
  font-family:var(--font-display);font-size:1.16rem;font-weight:700;
}
.drawer-links a span.dot-mark{width:6px;height:6px;border-radius:50%;background:var(--accent);opacity:0;transition:opacity .18s}
.drawer-links a.is-active span.dot-mark{opacity:1}
.drawer-links a:active{color:var(--accent)}
.drawer-foot{margin-top:auto;padding-top:28px;font-size:.88rem;color:var(--muted);line-height:2}
.drawer-foot strong{display:block;color:var(--ink);font-size:.92rem;margin-bottom:6px}

/* ---------- hero ---------- */
.page-hero{padding:clamp(44px,5.5vw,76px) 0 clamp(48px,6vw,80px)}
.hero-split{
  display:grid;grid-template-columns:56fr 44fr;
  gap:clamp(32px,5vw,64px);align-items:center;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-size:12px;letter-spacing:.14em;color:var(--muted);
  border:1px solid var(--line);border-radius:var(--r-btn);
  background:var(--paper);padding:7px 13px;margin-bottom:22px;
}
.eyebrow .pulse{
  width:6px;height:6px;border-radius:50%;background:var(--accent);
  box-shadow:0 0 0 4px rgba(196,71,43,.14);
}
.hero-copy h1{
  font-size:clamp(2rem,4.4vw,3.5rem);
  line-height:1.1;letter-spacing:.01em;
}
.hero-copy h1 em{
  font-style:normal;color:var(--accent);position:relative;white-space:nowrap;
}
.hero-sub{
  margin-top:20px;font-size:clamp(1rem,1.5vw,1.16rem);
  color:#3E362E;line-height:1.75;max-width:520px;
}
.hero-text{
  margin-top:14px;color:var(--muted);font-size:.96rem;
  line-height:1.9;max-width:540px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;align-items:center}
.hero-tags{
  display:flex;flex-wrap:wrap;gap:10px;margin-top:32px;
  padding-top:24px;border-top:1px solid var(--line);
}
.tag{
  display:inline-flex;align-items:center;gap:7px;
  font-size:.82rem;letter-spacing:.04em;color:#3E362E;
  background:var(--soft);border:1px solid var(--line);
  border-radius:var(--r-btn);padding:7px 12px;
}
.tag b{font-family:var(--font-num);font-weight:700;color:var(--ink)}
.tag .dot{width:5px;height:5px;border-radius:50%;background:var(--green)}

.hero-visual{position:relative}
.hero-frame{
  position:relative;border-radius:var(--r-frame);overflow:hidden;
  border:1px solid var(--line);background:var(--paper);
  box-shadow:var(--shadow-2);aspect-ratio:4/5;
}
.hero-frame img{width:100%;height:100%;object-fit:cover}
.hero-frame::after{
  content:"";position:absolute;inset:auto 0 0 0;height:44%;
  background:linear-gradient(to top,rgba(12,10,8,.82),rgba(12,10,8,0));
}
.frame-bar{
  position:absolute;left:0;right:0;bottom:0;z-index:2;
  padding:18px 20px;color:var(--inv);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
}
.frame-bar .fb-title{font-family:var(--font-display);font-size:1.02rem;font-weight:700}
.frame-bar .fb-meta{font-size:.78rem;letter-spacing:.08em;color:rgba(246,243,238,.72)}
.frame-chip{
  position:absolute;right:-14px;bottom:-18px;z-index:3;
  width:118px;aspect-ratio:3/4;border-radius:10px;overflow:hidden;
  border:1px solid var(--line);background:var(--paper);
  box-shadow:var(--shadow-2);
}
.frame-chip img{width:100%;height:100%;object-fit:cover}
.frame-chip .chip-label{
  position:absolute;left:0;right:0;bottom:0;
  background:rgba(12,10,8,.72);color:var(--inv);
  font-size:.68rem;letter-spacing:.08em;padding:5px 7px;text-align:center;
}
.play-dot{
  position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  width:52px;height:52px;border-radius:50%;
  background:rgba(246,243,238,.9);display:grid;place-items:center;
}
.play-dot svg{width:16px;height:16px;fill:var(--ink);stroke:none;margin-left:3px}

/* ---------- metrics ---------- */
.metric-strip{
  display:grid;grid-template-columns:repeat(4,1fr);
  border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;background:var(--paper);
}
.metric{padding:clamp(22px,2.6vw,32px) clamp(18px,2.2vw,26px);border-right:1px solid var(--line)}
.metric:last-child{border-right:0}
.metric-num{
  display:flex;align-items:baseline;gap:4px;
  font-family:var(--font-display);font-weight:700;
  font-size:clamp(1.9rem,3.4vw,2.9rem);line-height:1;color:var(--ink);
}
.metric-num em{font-style:normal;font-size:.82rem;color:var(--accent);font-family:var(--font-body);letter-spacing:.06em}
.metric-label{margin-top:12px;font-size:.86rem;color:var(--muted);letter-spacing:.04em;line-height:1.6}

/* ---------- data rows ---------- */
.row-list{border-top:1px solid var(--line);margin-top:6px}
.row-item{
  display:grid;grid-template-columns:210px 1fr 168px;
  gap:clamp(16px,2.4vw,32px);align-items:center;
  padding:24px 10px;border-bottom:1px solid var(--line);
  transition:background .22s ease,padding-left .22s ease;
}
.row-item:hover{background:var(--soft);padding-left:20px}
.row-name{font-family:var(--font-display);font-size:1.08rem;font-weight:700;line-height:1.5}
.row-name span{
  display:block;font-family:var(--font-body);font-size:.72rem;
  letter-spacing:.16em;color:var(--muted);font-weight:400;margin-top:4px;
}
.row-desc{font-size:.94rem;color:var(--muted);line-height:1.8}
.row-value{
  text-align:right;font-family:var(--font-num);font-weight:700;
  font-size:1.42rem;color:var(--ink);letter-spacing:.01em;
}
.row-value small{display:block;font-size:.72rem;font-weight:400;letter-spacing:.1em;color:var(--green);margin-top:4px;font-family:var(--font-body)}
.row-value.is-accent{color:var(--accent)}
.row-note{
  margin-top:22px;font-size:.84rem;color:var(--muted);
  display:flex;gap:10px;align-items:flex-start;line-height:1.8;
}
.row-note::before{content:"";flex:none;width:14px;height:1px;background:var(--accent);margin-top:12px}

/* ---------- dark panel ---------- */
.dark-panel{
  position:relative;overflow:hidden;color:var(--inv);
  background:var(--ink);border-radius:var(--r-frame);
  padding:clamp(26px,4vw,48px);
}
.dark-panel .panel-bg{
  position:absolute;inset:0;background-image:url('/assets/images/backpic/back-3.webp');
  background-size:cover;background-position:center;opacity:.16;
  filter:grayscale(60%);
}
.dark-panel .panel-inner{position:relative;z-index:2}
.dark-panel h2{color:var(--inv)}
.panel-head{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;flex-wrap:wrap;margin-bottom:26px}
.panel-head .section-desc{color:rgba(246,243,238,.66)}
.live-badge{
  display:inline-flex;align-items:center;gap:8px;
  font-size:.76rem;letter-spacing:.14em;color:rgba(246,243,238,.8);
  border:1px solid rgba(246,243,238,.22);border-radius:var(--r-btn);
  padding:7px 12px;
}
.live-badge i{width:6px;height:6px;border-radius:50%;background:var(--accent);display:inline-block;animation:blink 2.4s ease-in-out infinite}
@keyframes blink{0%,100%{opacity:1}50%{opacity:.3}}
.status-list{border-top:1px solid rgba(246,243,238,.16)}
.status-row{
  display:grid;grid-template-columns:auto 1fr auto auto;
  gap:16px;align-items:center;
  padding:16px 0;border-bottom:1px solid rgba(246,243,238,.14);
}
.status-dot{width:8px;height:8px;border-radius:50%;background:#6E9C7C;box-shadow:0 0 0 4px rgba(110,156,124,.16)}
.status-dot.warn{background:var(--accent);box-shadow:0 0 0 4px rgba(196,71,43,.18)}
.status-dot.idle{background:rgba(246,243,238,.42);box-shadow:none}
.status-name{font-size:.98rem;color:var(--inv)}
.status-name span{display:block;font-size:.8rem;color:rgba(246,243,238,.54);margin-top:2px}
.status-state{font-size:.76rem;letter-spacing:.1em;color:rgba(246,243,238,.62);white-space:nowrap}
.status-val{font-family:var(--font-num);font-weight:700;font-size:1.14rem;min-width:74px;text-align:right}

/* ---------- flow ---------- */
.flow{
  display:grid;grid-template-columns:repeat(4,1fr);
  border-top:1px solid var(--line);margin-top:8px;
}
.flow-step{padding:28px 26px 28px 0;border-right:1px solid var(--line)}
.flow-step:last-child{border-right:0}
.flow-num{
  font-family:var(--font-num);font-weight:700;font-size:1.9rem;
  color:var(--accent);letter-spacing:.02em;line-height:1;
}
.flow-step h3{margin-top:14px;font-size:1.1rem;line-height:1.4}
.flow-step p{margin-top:8px;font-size:.9rem;color:var(--muted);line-height:1.8}

/* ---------- faq ---------- */
.faq{max-width:860px;border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 0;font-size:1.02rem;font-weight:600;cursor:pointer;
  list-style:none;transition:color .18s ease;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary:hover{color:var(--accent)}
.faq .sign{position:relative;flex:none;width:16px;height:16px}
.faq .sign::before,.faq .sign::after{
  content:"";position:absolute;background:currentColor;
  transition:transform .2s ease,opacity .2s ease;
}
.faq .sign::before{left:0;top:7.5px;width:16px;height:1.4px}
.faq .sign::after{left:7.3px;top:0;width:1.4px;height:16px}
.faq details[open] .sign::after{transform:rotate(90deg);opacity:0}
.faq details[open] summary{color:var(--accent)}
.faq-a{padding:0 40px 24px 0;font-size:.96rem;line-height:1.85;color:var(--muted)}

/* ---------- cta band ---------- */
.cta-band{background:var(--ink);color:var(--inv);padding:clamp(40px,6vw,76px) 0}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-copy h2{color:var(--inv);font-size:clamp(1.5rem,2.8vw,2.3rem)}
.cta-copy p{margin-top:14px;color:rgba(246,243,238,.66);font-size:.96rem;max-width:520px;line-height:1.85}
.cta-actions{display:flex;align-items:center;gap:22px;flex-wrap:wrap}
.cta-actions .link-underline{color:var(--inv)}
.cta-actions .link-underline:hover{color:var(--accent)}

/* ---------- back strip ---------- */
.back-strip{padding:clamp(36px,4.6vw,56px) 0}
.back-strip h2{font-size:1.1rem;font-family:var(--font-body);font-weight:600;letter-spacing:.06em;color:var(--muted);margin-bottom:18px}
.back-links{display:flex;flex-wrap:wrap;gap:12px}
.link-card{
  display:inline-flex;align-items:center;gap:10px;
  padding:13px 18px;border:1px solid var(--line);border-radius:var(--r-card);
  background:var(--paper);font-size:.92rem;font-weight:500;
  transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease,color .2s ease;
}
.link-card:hover{border-color:var(--ink);transform:translateY(-2px);box-shadow:var(--shadow-1);color:var(--accent)}
.link-card .arrow{font-size:.86rem;transition:transform .15s ease}
.link-card:hover .arrow{transform:translateX(3px)}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:var(--inv);padding:clamp(48px,6vw,76px) 0 26px}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.15fr;gap:clamp(24px,3vw,44px)}
.f-logo{font-family:var(--font-display);font-size:1.2rem;font-weight:700;margin-bottom:14px}
.footer-brand p{color:rgba(246,243,238,.64);font-size:.92rem;line-height:1.85;max-width:310px}
.footer-col h4{
  font-family:var(--font-body);font-size:.84rem;font-weight:600;
  letter-spacing:.14em;color:rgba(246,243,238,.46);margin-bottom:16px;
}
.footer-col ul li{margin-bottom:11px;font-size:.92rem;color:rgba(246,243,238,.76)}
.footer-col ul li a{
  position:relative;display:inline-block;
  transition:color .18s ease,padding-left .18s ease;
}
.footer-col ul li a::before{
  content:"";position:absolute;left:0;top:50%;width:0;height:1px;
  background:var(--accent);transition:width .18s ease;
}
.footer-col ul li a:hover{color:var(--accent);padding-left:14px}
.footer-col ul li a:hover::before{width:8px}
.footer-contact .label{
  display:inline-block;min-width:76px;
  color:rgba(246,243,238,.42);font-size:.8rem;letter-spacing:.06em;
}
.footer-bottom{
  margin-top:clamp(32px,4vw,52px);padding-top:20px;
  border-top:1px solid rgba(246,243,238,.14);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:.8rem;color:rgba(246,243,238,.5);letter-spacing:.02em;
}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(10px);transition:opacity .5s ease,transform .5s ease}
.reveal.is-in{opacity:1;transform:translateY(0)}

/* ---------- responsive ---------- */
@media (max-width:1120px){
  .nav-links{gap:16px}
  .nav-links a{font-size:.88rem}
  .nav-inner{padding:0 24px;gap:18px}
}
@media (max-width:980px){
  .nav-links{display:none}
  .nav-right .btn-primary{display:none}
  .burger{display:grid}
  .hero-split{grid-template-columns:1fr;gap:38px}
  .hero-visual{max-width:340px;width:100%}
  .hero-copy h1{max-width:12em}
  .metric-strip{grid-template-columns:repeat(2,1fr)}
  .metric:nth-child(2n){border-right:0}
  .metric:nth-child(-n+2){border-bottom:1px solid var(--line)}
  .row-item{grid-template-columns:1fr;gap:8px;padding:22px 6px}
  .row-item:hover{padding-left:12px}
  .row-value{text-align:left;font-size:1.28rem}
  .row-value small{display:inline-block;margin-left:8px}
  .flow{grid-template-columns:repeat(2,1fr)}
  .flow-step{border-right:0;border-bottom:1px solid var(--line);padding:24px 20px 24px 0}
  .flow-step:nth-child(2n){padding-left:20px;border-left:1px solid var(--line)}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .nav-inner{padding:0 20px}
  .search-form{padding:14px 20px}
  .section{padding:56px 0}
  .hero-copy h1{font-size:clamp(1.85rem,7vw,2.6rem)}
  .hero-sub{font-size:1rem}
  .hero-actions .btn{flex:1 1 auto}
  .frame-chip{width:92px;right:-8px;bottom:-12px}
  .status-row{grid-template-columns:auto 1fr auto;gap:12px}
  .status-state{display:none}
  .faq-a{padding-right:0}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:6px}
}
@media (max-width:560px){
  .metric-strip{grid-template-columns:1fr}
  .metric{border-right:0;border-bottom:1px solid var(--line)}
  .metric:nth-child(n){border-right:0}
  .metric:last-child{border-bottom:0}
  .flow{grid-template-columns:1fr}
  .flow-step,.flow-step:nth-child(2n){padding:22px 0;border-left:0;border-bottom:1px solid var(--line)}
  .flow-step:last-child{border-bottom:0}
  .hero-visual{max-width:300px}
  .hero-tags{gap:8px}
  .tag{font-size:.78rem;padding:6px 10px}
  .back-links{gap:10px}
  .link-card{width:100%;justify-content:space-between}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category5 */
:root{
  --ink:#14110E;
  --ink-2:#2A2521;
  --paper:#F6F3EE;
  --white:#FFFFFF;
  --accent:#C4472B;
  --accent-dark:#A7371F;
  --pine:#2F4A3B;
  --muted:#6B6259;
  --line:#E3DDD4;
  --inv:#F6F3EE;
  --serif:"Noto Serif SC","Songti SC","Source Han Serif SC","SimSun",serif;
  --sans:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --r-sm:4px;
  --r-md:8px;
  --r-lg:12px;
  --sh-1:0 1px 2px rgba(20,17,14,.06);
  --sh-2:0 20px 44px -26px rgba(20,17,14,.35);
  --hdr:64px;
  --max:1200px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--sans);
  font-size:16.5px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
button{cursor:pointer;}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:2px;}

.container{
  width:100%;
  max-width:var(--max);
  margin:0 auto;
  padding:0 32px;
}

/* ---------- Header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(246,243,238,.88);
  -webkit-backdrop-filter:saturate(150%) blur(12px);
  backdrop-filter:saturate(150%) blur(12px);
  border-bottom:1px solid transparent;
  transition:border-color .22s ease,background .22s ease;
}
.site-header.is-scrolled{
  border-bottom-color:var(--line);
  background:rgba(246,243,238,.97);
}
.nav-inner{
  max-width:1280px;
  margin:0 auto;
  padding:0 32px;
  height:var(--hdr);
  display:flex;
  align-items:center;
  gap:28px;
}
.brand{
  font-family:var(--serif);
  font-size:20px;
  font-weight:700;
  letter-spacing:.02em;
  color:var(--ink);
  display:inline-flex;
  align-items:baseline;
  gap:6px;
  white-space:nowrap;
}
.brand-kicker{
  font-family:var(--sans);
  font-size:10.5px;
  font-weight:500;
  letter-spacing:.2em;
  color:var(--muted);
}
.nav-links{
  display:flex;
  align-items:center;
  gap:26px;
  margin-left:10px;
}
.nav-links a{
  position:relative;
  font-size:13.5px;
  color:var(--ink-2);
  padding:6px 0;
  white-space:nowrap;
  transition:color .16s ease;
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:-1px;
  height:2px;
  background:var(--accent);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .22s ease;
}
.nav-links a:hover{color:var(--accent);}
.nav-links a:hover::after,
.nav-links a.is-active::after{transform:scaleX(1);}
.nav-links a.is-active{color:var(--ink);font-weight:600;}
.nav-right{
  margin-left:auto;
  display:flex;
  align-items:center;
  gap:12px;
}
.icon-btn{
  width:36px;
  height:36px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  background:var(--white);
  color:var(--ink);
  transition:background .16s ease,color .16s ease,border-color .16s ease;
}
.icon-btn svg{
  width:17px;
  height:17px;
  fill:none;
  stroke:currentColor;
  stroke-width:1.7;
  stroke-linecap:round;
  stroke-linejoin:round;
}
.icon-btn:hover{border-color:var(--ink);background:var(--ink);color:var(--inv);}
.burger{display:none;}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:0 20px;
  border:1px solid transparent;
  border-radius:var(--r-sm);
  font-size:14px;
  font-weight:600;
  letter-spacing:.02em;
  cursor:pointer;
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease;
}
.btn .arrow{display:inline-block;transition:transform .18s ease;}
.btn:hover .arrow{transform:translateX(4px);}
.btn-primary{background:var(--ink);color:var(--inv);}
.btn-primary:hover{background:var(--accent);color:#fff;}
.btn-accent{background:var(--accent);color:#fff;}
.btn-accent:hover{background:var(--accent-dark);}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--ink);}
.btn-ghost:hover{background:var(--ink);border-color:var(--ink);color:var(--inv);}
.btn-sm{min-height:38px;padding:0 16px;font-size:13px;}
.link-underline{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--ink);
  position:relative;
  padding-bottom:3px;
}
.link-underline::after{
  content:"";
  position:absolute;
  left:0;
  bottom:0;
  width:100%;
  height:1px;
  background:var(--accent);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .22s ease;
}
.link-underline:hover::after{transform:scaleX(1);}
.link-underline:hover{color:var(--accent);}

/* ---------- Shared blocks ---------- */
.section{padding:clamp(56px,7.5vw,104px) 0;}
.section--white{background:var(--white);}
.section--paper{background:var(--paper);}
.section-head{max-width:720px;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:11.5px;
  letter-spacing:.18em;
  color:var(--muted);
  text-transform:uppercase;
}
.eyebrow .dot{
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--accent);
  display:inline-block;
}
.section-head h2{
  font-family:var(--serif);
  font-size:clamp(1.6rem,2.7vw,2.35rem);
  line-height:1.2;
  font-weight:700;
  letter-spacing:-.01em;
  margin-top:16px;
}
.section-head p{
  margin-top:16px;
  color:var(--muted);
  font-size:16px;
  line-height:1.78;
}
.rule{
  height:1px;
  background:var(--line);
  border:0;
  margin:0;
}

/* ---------- Hero ---------- */
.page-hero{
  padding:clamp(36px,4.5vw,60px) 0 clamp(52px,6vw,88px);
  background:var(--paper);
  border-bottom:1px solid var(--line);
}
.crumbs{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:12.5px;
  color:var(--muted);
  margin-bottom:clamp(24px,3vw,36px);
  flex-wrap:wrap;
}
.crumbs a{transition:color .16s ease;}
.crumbs a:hover{color:var(--accent);}
.crumbs .sep{color:var(--line);}
.crumbs .current{color:var(--ink-2);}

.hero-grid{
  display:grid;
  grid-template-columns:minmax(0,1.08fr) minmax(0,.92fr);
  gap:clamp(36px,5vw,64px);
  align-items:center;
}
.hero-badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 12px;
  border:1px solid var(--line);
  border-radius:100px;
  background:var(--white);
  font-size:12px;
  letter-spacing:.08em;
  color:var(--ink-2);
}
.hero-badge .dot{width:6px;height:6px;border-radius:50%;background:var(--accent);}
.page-hero h1{
  font-family:var(--serif);
  font-size:clamp(2.15rem,4.4vw,3.5rem);
  line-height:1.08;
  font-weight:700;
  letter-spacing:-.015em;
  margin-top:22px;
}
.page-hero h1 .mark{
  position:relative;
  display:inline-block;
}
.page-hero h1 .mark::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:6px;
  height:8px;
  background:rgba(196,71,43,.16);
  z-index:-1;
}
.hero-sub{
  margin-top:20px;
  font-size:17px;
  line-height:1.7;
  color:var(--ink-2);
  max-width:34em;
}
.hero-lead{
  margin-top:14px;
  font-size:15.5px;
  line-height:1.8;
  color:var(--muted);
  max-width:36em;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:14px;
  margin-top:28px;
}
.metrics{
  display:flex;
  flex-wrap:wrap;
  margin-top:34px;
  padding-top:22px;
  border-top:1px solid var(--line);
}
.metric{
  flex:1 1 0;
  min-width:128px;
  padding-right:20px;
  margin-right:20px;
  border-right:1px solid var(--line);
}
.metric:last-child{border-right:0;margin-right:0;padding-right:0;}
.metric b{
  display:block;
  font-family:var(--serif);
  font-size:19px;
  font-weight:700;
  line-height:1.3;
}
.metric span{
  display:block;
  margin-top:4px;
  font-size:12.5px;
  color:var(--muted);
  letter-spacing:.02em;
}

.hero-media{
  position:relative;
  border-radius:var(--r-lg);
  overflow:visible;
}
.hero-media .frame{
  position:relative;
  border-radius:var(--r-lg);
  overflow:hidden;
  aspect-ratio:4/5;
  background:#ded8cf;
  box-shadow:var(--sh-2);
}
.hero-media .frame img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .5s ease;
}
.hero-media:hover .frame img{transform:scale(1.03);}
.media-bar{
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  padding:16px 18px;
  background:linear-gradient(to top,rgba(20,17,14,.88),rgba(20,17,14,0));
  color:var(--inv);
  font-size:12.5px;
  letter-spacing:.04em;
}
.media-tag{
  display:inline-flex;
  align-items:center;
  padding:3px 9px;
  border-radius:100px;
  background:rgba(246,243,238,.16);
  border:1px solid rgba(246,243,238,.28);
  font-size:11.5px;
  letter-spacing:.1em;
}
.media-chip{
  position:absolute;
  right:-14px;
  bottom:-18px;
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  box-shadow:var(--sh-2);
  padding:12px 16px;
  display:flex;
  align-items:baseline;
  gap:8px;
}
.media-chip .chip-num{
  font-family:var(--serif);
  font-size:22px;
  font-weight:700;
  color:var(--accent);
  line-height:1;
}
.media-chip .chip-label{
  font-size:11.5px;
  color:var(--muted);
  letter-spacing:.04em;
}

/* ---------- Flow ---------- */
.flow-grid{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:clamp(20px,3vw,36px);
  margin-top:clamp(30px,4vw,52px);
}
.flow-step{
  border-top:1px solid var(--line);
  padding-top:22px;
  position:relative;
}
.flow-step::before{
  content:"";
  position:absolute;
  top:-1px;
  left:0;
  width:36px;
  height:2px;
  background:var(--accent);
}
.flow-step .num{
  display:block;
  font-family:var(--serif);
  font-size:clamp(2rem,3vw,2.6rem);
  font-weight:700;
  line-height:1;
  color:var(--accent);
  letter-spacing:.02em;
}
.flow-step h3{
  margin-top:16px;
  font-size:17px;
  font-weight:700;
  letter-spacing:.01em;
}
.flow-step p{
  margin-top:10px;
  font-size:14.5px;
  line-height:1.75;
  color:var(--muted);
}

/* ---------- Dark band ---------- */
.band-dark{
  position:relative;
  overflow:hidden;
  background:var(--ink);
  color:var(--inv);
  padding:clamp(56px,7vw,96px) 0;
}
.band-dark::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:url(/assets/images/backpic/back-2.webp);
  background-size:cover;
  background-position:center;
  opacity:.13;
  filter:grayscale(1);
}
.band-dark .container{position:relative;z-index:1;}
.band-dark .eyebrow{color:rgba(246,243,238,.62);}
.band-dark .section-head h2{color:var(--inv);}
.band-dark .section-head p{color:rgba(246,243,238,.68);}
.deliver-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:0 clamp(32px,5vw,64px);
  margin-top:clamp(28px,4vw,48px);
}
.deliver-item{
  padding:26px 0;
  border-top:1px solid rgba(246,243,238,.16);
}
.deliver-item .d-top{
  display:flex;
  align-items:baseline;
  gap:12px;
}
.deliver-item .d-index{
  font-family:var(--serif);
  font-size:14px;
  color:var(--accent);
  letter-spacing:.1em;
}
.deliver-item h3{
  font-size:17.5px;
  font-weight:700;
  letter-spacing:.01em;
}
.deliver-item p{
  margin-top:10px;
  font-size:14.5px;
  line-height:1.8;
  color:rgba(246,243,238,.66);
}
.deliver-item .tags{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin-top:14px;
}
.tag-chip{
  display:inline-flex;
  align-items:center;
  padding:4px 10px;
  border:1px solid rgba(246,243,238,.22);
  border-radius:100px;
  font-size:11.5px;
  letter-spacing:.06em;
  color:rgba(246,243,238,.8);
}
.tag-chip--pine{
  border-color:rgba(196,71,43,.5);
  color:#E9A38F;
}

/* ---------- Prepare ---------- */
.prepare-grid{
  display:grid;
  grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);
  gap:clamp(32px,5vw,72px);
  align-items:start;
}
.prepare-figure{
  margin-top:28px;
  border-radius:var(--r-md);
  overflow:hidden;
  border:1px solid var(--line);
  aspect-ratio:16/11;
  background:#ded8cf;
}
.prepare-figure img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .5s ease;
}
.prepare-figure:hover img{transform:scale(1.03);}
.checklist{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:0 32px;
}
.check-item{
  display:flex;
  gap:14px;
  padding:20px 0;
  border-bottom:1px solid var(--line);
}
.check-item .box{
  flex:0 0 auto;
  width:10px;
  height:10px;
  margin-top:8px;
  background:var(--pine);
  border-radius:2px;
}
.check-item .c-title{
  font-size:15.5px;
  font-weight:700;
  line-height:1.5;
}
.check-item .c-desc{
  margin-top:6px;
  font-size:14px;
  line-height:1.75;
  color:var(--muted);
}

/* ---------- FAQ ---------- */
.faq-grid{
  display:grid;
  grid-template-columns:minmax(0,.72fr) minmax(0,1.28fr);
  gap:clamp(32px,5vw,72px);
  align-items:start;
}
.faq-side .note{
  margin-top:22px;
  padding:18px 20px;
  border:1px solid var(--line);
  border-left:3px solid var(--pine);
  border-radius:var(--r-sm);
  background:var(--paper);
  font-size:14px;
  line-height:1.78;
  color:var(--ink-2);
}
.faq-list{border-top:1px solid var(--line);}
.faq-item{
  border-bottom:1px solid var(--line);
}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  position:relative;
  padding:22px 44px 22px 0;
  font-size:17px;
  font-weight:600;
  line-height:1.55;
  color:var(--ink);
  transition:color .16s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--accent);}
.faq-item summary::before{
  content:"";
  position:absolute;
  right:8px;
  top:calc(50% - 1px);
  width:13px;
  height:1.6px;
  background:currentColor;
  transition:transform .2s ease;
}
.faq-item summary::after{
  content:"";
  position:absolute;
  right:13.7px;
  top:calc(50% - 6.5px);
  width:1.6px;
  height:13px;
  background:currentColor;
  transition:transform .2s ease,opacity .2s ease;
}
.faq-item[open] summary::after{transform:rotate(90deg) scaleY(.9);opacity:0;}
.faq-body{
  padding:0 44px 24px 0;
  font-size:15.5px;
  line-height:1.82;
  color:var(--muted);
}

/* ---------- Contact form ---------- */
.contact-grid{
  display:grid;
  grid-template-columns:minmax(0,.86fr) minmax(0,1.14fr);
  gap:clamp(32px,5vw,64px);
  align-items:start;
}
.contact-list{
  margin-top:26px;
  display:grid;
  gap:14px;
}
.contact-list li{
  display:flex;
  gap:12px;
  font-size:14.5px;
  line-height:1.75;
  color:var(--muted);
}
.contact-list li::before{
  content:"";
  flex:0 0 auto;
  width:5px;
  height:5px;
  margin-top:10px;
  border-radius:50%;
  background:var(--accent);
}
.form-card{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:clamp(22px,3vw,34px);
  box-shadow:var(--sh-1);
}
.form-row{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:18px;
}
.field{margin-bottom:18px;}
.field:last-of-type{margin-bottom:0;}
.field label{
  display:block;
  font-size:12.5px;
  letter-spacing:.06em;
  color:var(--muted);
  margin-bottom:8px;
}
.field input,
.field select,
.field textarea{
  width:100%;
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  padding:12px 14px;
  font-size:15px;
  line-height:1.5;
  color:var(--ink);
  transition:border-color .16s ease,box-shadow .16s ease;
  min-height:44px;
}
.field textarea{min-height:112px;resize:vertical;}
.field input::placeholder,
.field textarea::placeholder{color:#A79E93;}
.field input:focus,
.field select:focus,
.field textarea:focus{
  outline:none;
  border-color:var(--accent);
  box-shadow:0 0 0 3px rgba(196,71,43,.13);
}
.form-foot{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  margin-top:24px;
  padding-top:20px;
  border-top:1px solid var(--line);
}
.form-foot .hint{font-size:12.5px;color:var(--muted);}
.form-note{
  display:none;
  margin-top:16px;
  padding:12px 14px;
  border-left:3px solid var(--pine);
  background:rgba(47,74,59,.07);
  border-radius:var(--r-sm);
  font-size:14px;
  line-height:1.7;
  color:var(--pine);
}
.form-note.is-visible{display:block;}
.form-note.is-error{
  border-left-color:var(--accent);
  background:rgba(196,71,43,.08);
  color:var(--accent-dark);
}

/* ---------- CTA ---------- */
.cta-wrap{padding:0 0 clamp(56px,7vw,96px);background:var(--paper);}
.cta-card{
  position:relative;
  overflow:hidden;
  background:var(--ink);
  color:var(--inv);
  border-radius:var(--r-lg);
  padding:clamp(30px,4.5vw,54px);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:clamp(24px,4vw,48px);
  flex-wrap:wrap;
}
.cta-card::after{
  content:"";
  position:absolute;
  right:-60px;
  top:-60px;
  width:220px;
  height:220px;
  border:1px solid rgba(246,243,238,.12);
  border-radius:50%;
  pointer-events:none;
}
.cta-card h2{
  font-family:var(--serif);
  font-size:clamp(1.45rem,2.5vw,2.1rem);
  line-height:1.25;
  font-weight:700;
}
.cta-card p{
  margin-top:12px;
  font-size:15px;
  line-height:1.75;
  color:rgba(246,243,238,.68);
  max-width:34em;
}
.cta-actions{
  display:flex;
  align-items:center;
  gap:18px;
  flex-wrap:wrap;
}
.cta-actions .btn-accent:hover{background:var(--accent-dark);}
.cta-actions .link-underline{color:rgba(246,243,238,.86);}
.cta-actions .link-underline:hover{color:#fff;}
.cross-links{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 22px;
  margin-top:26px;
  padding-top:22px;
  border-top:1px solid var(--line);
  font-size:13.5px;
  color:var(--muted);
}
.cross-links .cl-title{
  font-size:11.5px;
  letter-spacing:.16em;
  color:var(--muted);
}
.cross-links a{
  color:var(--ink-2);
  padding-bottom:2px;
  border-bottom:1px solid transparent;
  transition:color .16s ease,border-color .16s ease;
}
.cross-links a:hover{color:var(--accent);border-bottom-color:var(--accent);}

/* ---------- Footer ---------- */
.site-footer{
  background:var(--ink);
  color:var(--inv);
  padding:clamp(48px,6vw,76px) 0 28px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.1fr;
  gap:clamp(24px,4vw,48px);
  padding-bottom:40px;
  border-bottom:1px solid rgba(246,243,238,.14);
}
.f-logo{
  font-family:var(--serif);
  font-size:21px;
  font-weight:700;
  letter-spacing:.02em;
  margin-bottom:14px;
}
.footer-brand p{
  font-size:14px;
  line-height:1.8;
  color:rgba(246,243,238,.62);
  max-width:30em;
}
.footer-col h4{
  font-size:12px;
  letter-spacing:.16em;
  font-weight:600;
  color:rgba(246,243,238,.55);
  margin-bottom:16px;
}
.footer-col ul{display:grid;gap:11px;}
.footer-col a{
  position:relative;
  display:inline-block;
  font-size:14px;
  color:rgba(246,243,238,.82);
  transition:color .16s ease,transform .16s ease;
}
.footer-col a::before{
  content:"";
  position:absolute;
  left:-12px;
  top:50%;
  width:8px;
  height:1px;
  background:var(--accent);
  opacity:0;
  transform:translateX(-4px);
  transition:opacity .16s ease,transform .16s ease;
}
.footer-col a:hover{color:var(--accent);transform:translateX(8px);}
.footer-col a:hover::before{opacity:1;transform:translateX(0);}
.footer-contact li{
  font-size:14px;
  color:rgba(246,243,238,.82);
  line-height:1.7;
}
.footer-contact .label{
  display:block;
  font-size:11.5px;
  letter-spacing:.12em;
  color:rgba(246,243,238,.5);
  margin-bottom:3px;
}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding-top:22px;
  font-size:12.5px;
  color:rgba(246,243,238,.48);
}

/* ---------- Motion ---------- */
.reveal{
  opacity:0;
  transform:translateY(10px);
  transition:opacity .5s ease,transform .5s ease;
}
.reveal.is-in{opacity:1;transform:none;}

/* ---------- Responsive ---------- */
@media (max-width:1280px){
  .nav-inner{padding:0 24px;gap:20px;}
  .nav-links{gap:20px;}
}
@media (max-width:1024px){
  .nav-links{display:none;}
  .burger{display:inline-flex;}
  .site-header.drawer-open .nav-links{
    display:flex;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    position:absolute;
    top:100%;
    left:0;
    right:0;
    margin-left:0;
    padding:8px 24px 28px;
    background:var(--paper);
    border-top:1px solid var(--line);
    box-shadow:var(--sh-2);
    max-height:calc(100vh - var(--hdr));
    overflow-y:auto;
    z-index:70;
  }
  .site-header.drawer-open .nav-links a{
    font-family:var(--serif);
    font-size:19px;
    font-weight:600;
    padding:16px 0;
    border-bottom:1px solid var(--line);
  }
  .site-header.drawer-open .nav-links a::after{display:none;}
  .site-header.drawer-open .nav-links a.is-active{color:var(--accent);}
  .hero-grid{grid-template-columns:1fr;gap:44px;}
  .hero-media{max-width:420px;}
  .flow-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px 24px;}
  .prepare-grid{grid-template-columns:1fr;gap:36px;}
  .faq-grid{grid-template-columns:1fr;gap:32px;}
  .contact-grid{grid-template-columns:1fr;gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:768px){
  body{font-size:16px;}
  .container{padding:0 20px;}
  .nav-inner{padding:0 20px;}
  .brand{font-size:18px;}
  .brand-kicker{font-size:10px;letter-spacing:.16em;}
  .nav-right .btn{display:none;}
  .section{padding:56px 0;}
  .page-hero{padding:28px 0 52px;}
  .hero-media{max-width:320px;margin:0 auto;width:100%;}
  .media-chip{right:-6px;bottom:-14px;padding:10px 13px;}
  .metrics{gap:14px 0;}
  .metric{flex:1 1 46%;min-width:0;border-right:0;padding-right:0;margin-right:0;padding-bottom:12px;}
  .metric:nth-child(-n+2){border-bottom:1px solid var(--line);}
  .deliver-grid{grid-template-columns:1fr;}
  .checklist{grid-template-columns:1fr;}
  .form-row{grid-template-columns:1fr;}
  .cta-card{flex-direction:column;align-items:flex-start;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
}
@media (max-width:560px){
  .page-hero h1{font-size:2rem;}
  .hero-actions .btn{width:100%;}
  .flow-grid{grid-template-columns:1fr;gap:24px;}
  .flow-step{padding-top:18px;}
  .faq-item summary{font-size:16px;padding-right:38px;}
  .faq-body{padding-right:0;}
  .cross-links{flex-direction:column;align-items:flex-start;gap:10px;}
}
@media (prefers-reduced-motion:reduce){
  *,
  *::before,
  *::after{
    animation-duration:.001ms !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .reveal{opacity:1;transform:none;}
}