/* roulang page: index */
:root{
  --ink:#16211D;
  --ink-2:#2A3A33;
  --accent:#C0562F;
  --accent-2:#4C6B5C;
  --paper:#FBFAF7;
  --sand:#EFE9DE;
  --card:#FFFFFF;
  --line:rgba(22,33,29,.12);
  --line-dark:rgba(251,250,247,.18);
  --text:#1B1B1A;
  --muted:#5A5A55;
  --faint:#8B8B84;
  --radius-card:6px;
  --radius-btn:2px;
  --radius-pill:999px;
  --container:1200px;
  --serif:"Noto Serif SC","Source Han Serif SC",Georgia,"Songti SC",serif;
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --ease:240ms ease-out;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:var(--sans);
  font-size:17px;
  line-height:1.85;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:4px}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,[tabindex]:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:2px;
  border-radius:2px;
}
::selection{background:var(--accent);color:#fff}

/* ---------- 容器 ---------- */
.grid-container{max-width:var(--container);padding-left:24px;padding-right:24px;margin:0 auto}
.grid-container.full{max-width:100%;padding:0}
.grid-x{margin-left:-16px;margin-right:-16px}
.grid-x>.cell{padding-left:16px;padding-right:16px}
@media screen and (max-width:639px){
  .grid-container{padding-left:20px;padding-right:20px}
  .grid-x{margin-left:-10px;margin-right:-10px}
  .grid-x>.cell{padding-left:10px;padding-right:10px}
}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--ink);color:rgba(251,250,247,.72);font-size:13px;letter-spacing:.04em}
.topbar .grid-container{display:flex;align-items:center;justify-content:space-between;min-height:34px;gap:16px}
.topbar .tb-left{display:flex;align-items:center;gap:20px}
.topbar .tb-left span i{color:var(--accent);margin-right:6px;font-size:12px}
.topbar a{color:rgba(251,250,247,.85);border-bottom:1px solid transparent;transition:border-color var(--ease),color var(--ease)}
.topbar a:hover{color:#fff;border-bottom-color:var(--accent)}
@media screen and (max-width:767px){.topbar .tb-left span:last-child{display:none}}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--paper);
  border-bottom:1px solid var(--line);
  transition:background var(--ease),box-shadow var(--ease);
}
.site-header.is-shrink{background:rgba(251,250,247,.86);backdrop-filter:blur(8px);box-shadow:0 1px 0 var(--line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;min-height:76px;transition:min-height var(--ease)}
.site-header.is-shrink .nav-inner{min-height:62px}
.brand{display:inline-flex;align-items:center;gap:10px;font-family:var(--serif);font-size:22px;font-weight:600;letter-spacing:.02em;color:var(--ink)}
.brand .dot{width:6px;height:6px;border-radius:50%;background:var(--accent);display:inline-block}
.brand small{font-family:var(--sans);font-size:11px;letter-spacing:.16em;color:var(--faint);text-transform:uppercase;font-weight:400}
.nav-links{display:flex;align-items:center;gap:34px}
.nav-links a{
  position:relative;font-size:15.5px;color:var(--ink-2);padding:6px 0;letter-spacing:.02em;transition:color var(--ease);
}
.nav-links a::after{
  content:"";position:absolute;left:0;bottom:0;width:0;height:1px;background:var(--accent);transition:width var(--ease);
}
.nav-links a:hover{color:var(--accent)}
.nav-links a:hover::after{width:100%}
.nav-links a.active{color:var(--ink);font-weight:500}
.nav-links a.active::after{width:100%;height:2px}
.nav-cta{display:flex;align-items:center;gap:16px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:var(--radius-btn);border:1px solid transparent;
  font-size:15px;line-height:1;letter-spacing:.03em;cursor:pointer;
  transition:background var(--ease),color var(--ease),border-color var(--ease),transform var(--ease);
}
.btn-primary{background:var(--ink);color:var(--paper)}
.btn-primary:hover{background:var(--accent);color:#fff;transform:translateY(-2px)}
.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-sm{padding:11px 20px;font-size:14px}
.btn-link{
  display:inline-flex;align-items:center;gap:10px;font-size:15px;color:var(--ink);
  border-bottom:1px solid var(--line);padding-bottom:4px;transition:color var(--ease),border-color var(--ease);
}
.btn-link i{transition:transform var(--ease);font-size:12px;color:var(--accent)}
.btn-link:hover{color:var(--accent);border-color:var(--accent)}
.btn-link:hover i{transform:translateX(4px)}
.nav-toggle{display:none;background:none;border:0;font-size:20px;color:var(--ink);cursor:pointer;padding:8px}
@media screen and (max-width:1023px){
  .nav-links,.nav-cta .btn{display:none}
  .nav-toggle{display:inline-flex}
}
/* 移动抽屉 */
.drawer{
  position:fixed;inset:0;z-index:120;background:var(--paper);
  display:flex;flex-direction:column;padding:32px 24px 40px;
  transform:translateY(-100%);transition:transform 420ms cubic-bezier(.22,.7,.28,1);
}
.drawer.is-open{transform:translateY(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);padding-bottom:20px}
.drawer-nav{display:flex;flex-direction:column;margin-top:12px}
.drawer-nav a{
  font-family:var(--serif);font-size:26px;color:var(--ink);padding:20px 0;border-bottom:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;transition:color var(--ease),padding-left var(--ease);
}
.drawer-nav a i{font-size:14px;color:var(--faint)}
.drawer-nav a:hover,.drawer-nav a.active{color:var(--accent);padding-left:8px}
.drawer-foot{margin-top:auto;font-size:13px;color:var(--faint);line-height:2}
.drawer-close{
  position:absolute;right:20px;bottom:24px;width:52px;height:52px;border-radius:50%;
  border:1px solid var(--line);background:transparent;color:var(--ink);cursor:pointer;font-size:16px;
  transition:background var(--ease),color var(--ease),border-color var(--ease);
}
.drawer-close:hover{background:var(--accent);color:#fff;border-color:var(--accent)}

/* ---------- 通用排版 ---------- */
.section{padding:120px 0}
.section-sand{background:var(--sand)}
.section-line{border-top:1px solid var(--line)}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:48px}
.sec-head .eyebrow{
  font-size:13px;letter-spacing:.2em;text-transform:uppercase;color:var(--accent);
  display:block;margin-bottom:14px;
}
.sec-head h2{font-family:var(--serif);font-weight:600;font-size:clamp(26px,3vw,40px);line-height:1.25;color:var(--ink);letter-spacing:.02em}
.sec-head p{max-width:520px;color:var(--muted);font-size:15.5px;margin-top:14px}
.sec-head .sec-action{flex:none;padding-bottom:6px}
.clamp-2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.clamp-3{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
@media screen and (max-width:1023px){.section{padding:88px 0}.sec-head{flex-direction:column;align-items:flex-start;gap:18px;margin-bottom:36px}}
@media screen and (max-width:639px){.section{padding:64px 0}}

/* ---------- Hero ---------- */
.hero{padding:96px 0 72px;position:relative;overflow:hidden}
.hero-row{align-items:center}
.hero-copy .kicker{
  display:inline-flex;align-items:center;gap:10px;font-size:13px;letter-spacing:.16em;
  color:var(--accent-2);border:1px solid var(--line);border-radius:var(--radius-pill);padding:7px 16px;margin-bottom:26px;
}
.hero-copy .kicker i{font-size:11px;color:var(--accent)}
.hero h1{
  font-family:var(--serif);font-weight:600;font-size:clamp(38px,5.2vw,72px);line-height:1.12;
  color:var(--ink);letter-spacing:.02em;
}
.hero h1 em{font-style:normal;color:var(--accent)}
.hero-sub{font-size:17px;color:var(--muted);max-width:520px;margin-top:22px}
.hero-actions{display:flex;align-items:center;gap:28px;flex-wrap:wrap;margin-top:36px}
.hero-rule{border-top:1px solid var(--line);margin-top:48px;padding-top:22px}
.hero-metrics{display:flex;gap:48px;flex-wrap:wrap}
.hero-metrics div{font-size:13px;color:var(--faint);letter-spacing:.04em}
.hero-metrics div strong{display:block;font-family:var(--serif);font-size:22px;color:var(--ink);font-weight:600;letter-spacing:.02em;margin-bottom:2px}
.hero-media{position:relative;padding-left:36px}
.hero-media .offset-block{
  position:absolute;left:0;top:-28px;width:62%;height:64%;background:var(--sand);z-index:0;
}
.hero-media img{position:relative;z-index:1;width:100%;aspect-ratio:4/5;object-fit:cover;box-shadow:0 12px 32px rgba(22,33,29,.06)}
.hero-media .hero-tag{
  position:absolute;z-index:2;left:12px;bottom:22px;background:var(--paper);border:1px solid var(--line);
  padding:14px 18px;font-size:13px;color:var(--muted);max-width:230px;line-height:1.7;border-radius:var(--radius-card);
}
.hero-media .hero-tag strong{display:block;font-family:var(--serif);font-size:16px;color:var(--ink);margin-bottom:4px}
@media screen and (max-width:1023px){
  .hero{padding:64px 0 48px}
  .hero-media{padding-left:0;margin-top:48px}
  .hero-media .offset-block{top:-16px;height:52%}
  .hero-media img{aspect-ratio:16/9;height:240px}
  .hero-media .hero-tag{position:static;margin-top:16px;max-width:none}
}
@media screen and (max-width:639px){
  .hero-actions{gap:18px}
  .hero-metrics{gap:28px}
}

/* ---------- 服务条：纵向编号列表 ---------- */
.cap-list{border-top:1px solid var(--line)}
.cap-item{
  display:grid;grid-template-columns:64px 1fr auto;align-items:center;gap:24px;
  padding:30px 8px;border-bottom:1px solid var(--line);
  transition:padding-left var(--ease),border-color var(--ease);
}
.cap-item .num{font-family:var(--serif);font-size:26px;color:var(--faint);letter-spacing:.04em;transition:color var(--ease)}
.cap-item h3{font-family:var(--serif);font-size:21px;font-weight:600;color:var(--ink);margin-bottom:6px}
.cap-item p{font-size:15px;color:var(--muted)}
.cap-item .arrow{color:var(--faint);font-size:14px;transition:transform var(--ease),color var(--ease)}
.cap-item:hover{padding-left:16px;border-color:var(--accent)}
.cap-item:hover .num{color:var(--accent)}
.cap-item:hover .arrow{transform:translateX(6px);color:var(--accent)}
@media screen and (max-width:639px){
  .cap-item{grid-template-columns:44px 1fr;gap:14px;padding:22px 4px}
  .cap-item .arrow{display:none}
  .cap-item .num{font-size:20px}
}

/* ---------- 数据区 ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.stat{border-top:1px solid var(--line);padding:34px 28px 8px 0}
.stat + .stat{padding-left:32px;border-left:1px solid var(--line)}
.stat .value{font-family:var(--serif);font-size:clamp(40px,4.4vw,56px);line-height:1;color:var(--accent);font-weight:600;letter-spacing:.01em}
.stat .value span{font-size:20px;color:var(--ink-2);margin-left:4px;letter-spacing:.06em}
.stat .label{font-size:13px;color:var(--faint);letter-spacing:.1em;text-transform:uppercase;margin-top:16px}
.stat .desc{font-size:15px;color:var(--muted);margin-top:10px}
@media screen and (max-width:1023px){
  .stats{grid-template-columns:repeat(2,1fr)}
  .stat:nth-child(3){padding-left:0;border-left:0}
  .stat{padding-right:20px}
}
@media screen and (max-width:639px){
  .stats{grid-template-columns:1fr}
  .stat,.stat + .stat{padding:26px 0 8px;border-left:0}
}

/* ---------- 案例：两列错位 ---------- */
.case-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:start}
.case-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;transition:border-color var(--ease),box-shadow var(--ease)}
.case-card:hover{border-color:var(--accent);box-shadow:0 12px 32px rgba(22,33,29,.06)}
.case-card .thumb{overflow:hidden}
.case-card .thumb img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:0;transition:transform 600ms ease}
.case-card:hover .thumb img{transform:scale(1.03)}
.case-card .body{padding:28px}
.case-card .tagline{font-size:13px;color:var(--accent-2);letter-spacing:.14em;text-transform:uppercase;margin-bottom:12px;display:block}
.case-card h3{font-family:var(--serif);font-size:22px;font-weight:600;color:var(--ink);margin-bottom:12px}
.case-card p{font-size:15px;color:var(--muted);margin-bottom:18px}
.case-offset{margin-top:40px}
@media screen and (max-width:1023px){
  .case-grid{grid-template-columns:1fr;gap:28px}
  .case-offset{margin-top:0}
}

/* ---------- 步骤 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:16px}
.step{position:relative;padding:0 26px 0 0}
.step::before{content:"";position:absolute;left:0;top:5px;width:10px;height:10px;border-radius:50%;border:1.5px solid var(--accent);background:var(--paper)}
.step.is-active::before{background:var(--accent)}
.step::after{content:"";position:absolute;left:16px;top:9px;right:0;height:1px;background:var(--line)}
.step:last-child::after{display:none}
.step .step-inner{padding-top:32px}
.step .step-no{font-size:13px;letter-spacing:.16em;color:var(--faint);display:block;margin-bottom:8px}
.step h3{font-family:var(--serif);font-size:19px;font-weight:600;color:var(--ink);margin-bottom:10px}
.step p{font-size:15px;color:var(--muted)}
@media screen and (max-width:1023px){
  .steps{grid-template-columns:1fr}
  .step{padding:0 0 0 34px;margin-bottom:30px}
  .step::before{top:4px}
  .step::after{left:4px;top:22px;bottom:-10px;right:auto;width:1px;height:auto}
  .step .step-inner{padding-top:0}
  .step:last-child::after{display:none}
}

/* ---------- 资讯（CMS） ---------- */
.news-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:28px}
.news-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:28px;display:flex;flex-direction:column;transition:border-color var(--ease),box-shadow var(--ease);
}
.news-card:hover{border-color:var(--accent);box-shadow:0 12px 32px rgba(22,33,29,.06)}
.news-feature{grid-column:1 / -1;flex-direction:row;gap:32px;align-items:stretch;padding:0;overflow:hidden}
.news-feature .nf-media{flex:0 0 42%;overflow:hidden}
.news-feature .nf-media img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform 600ms ease}
.news-feature:hover .nf-media img{transform:scale(1.03)}
.news-feature .nf-body{padding:36px 36px 36px 4px;display:flex;flex-direction:column;justify-content:center}
.news-card .meta{display:flex;align-items:center;gap:14px;margin-bottom:16px;flex-wrap:wrap}
.news-card .chip{
  font-size:13px;color:var(--accent-2);border:1px solid var(--line);border-radius:var(--radius-pill);
  padding:4px 12px;letter-spacing:.04em;
}
.news-card .date{font-size:13px;color:var(--faint);letter-spacing:.04em}
.news-card h3{font-family:var(--serif);font-size:20px;font-weight:600;color:var(--ink);line-height:1.45;margin-bottom:12px}
.news-feature h3{font-size:26px}
.news-card h3 a:hover{color:var(--accent)}
.news-card p{font-size:15px;color:var(--muted);margin-bottom:20px}
.news-card .more{margin-top:auto;font-size:14px;color:var(--ink);display:inline-flex;align-items:center;gap:8px}
.news-card .more i{color:var(--accent);font-size:12px;transition:transform var(--ease)}
.news-card .more:hover{color:var(--accent)}
.news-card .more:hover i{transform:translateX(4px)}
.news-empty{
  border:1px dashed var(--line);border-radius:var(--radius-card);
  min-height:160px;display:flex;align-items:center;justify-content:center;
  color:var(--faint);font-size:15px;letter-spacing:.04em;
}
@media screen and (max-width:1023px){
  .news-feature{flex-direction:column}
  .news-feature .nf-media{flex:none;height:220px}
  .news-feature .nf-body{padding:24px 28px 28px}
}
@media screen and (max-width:639px){
  .news-grid{grid-template-columns:1fr}
  .news-card{padding:20px}
}

/* ---------- FAQ ---------- */
.faq{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;background:none;border:0;text-align:left;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:24px 4px;font-size:17px;font-weight:500;color:var(--ink);letter-spacing:.02em;
  transition:color var(--ease);
}
.faq-q:hover{color:var(--accent)}
.faq-item.is-open .faq-q{color:var(--accent)}
.faq-icon{position:relative;width:16px;height:16px;flex:none}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--ink);transition:transform var(--ease),background var(--ease)}
.faq-icon::before{left:0;top:7.25px;width:16px;height:1.5px}
.faq-icon::after{left:7.25px;top:0;width:1.5px;height:16px}
.faq-item.is-open .faq-icon::after{transform:scaleY(0)}
.faq-item.is-open .faq-icon::before,.faq-item.is-open .faq-icon::after{background:var(--accent)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 380ms ease}
.faq-a .faq-a-inner{padding:0 4px 26px;font-size:15.5px;color:var(--muted);max-width:800px}

/* ---------- 联系 ---------- */
.contact-block{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);padding:44px}
.contact-info h3{font-family:var(--serif);font-size:22px;color:var(--ink);margin-bottom:14px}
.contact-info p{font-size:15px;color:var(--muted);margin-bottom:26px}
.contact-list li{display:flex;gap:14px;padding:16px 0;border-top:1px solid var(--line);font-size:15px;color:var(--muted)}
.contact-list li i{color:var(--accent);margin-top:5px;font-size:14px;width:16px;flex:none}
.contact-list li strong{display:block;color:var(--ink);font-weight:500;font-family:var(--serif);font-size:16px;margin-bottom:2px}
.field{margin-bottom:26px}
.field label{display:block;font-size:13px;letter-spacing:.12em;color:var(--faint);text-transform:uppercase;margin-bottom:8px}
.field input,.field select,.field textarea{
  width:100%;border:0;border-bottom:1px solid var(--line);background:transparent;
  padding:10px 2px;font-size:16px;border-radius:0;transition:border-color var(--ease);
}
.field textarea{resize:vertical;min-height:88px;line-height:1.7}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--faint) 50%),linear-gradient(135deg,var(--faint) 50%,transparent 50%);background-position:calc(100% - 12px) 18px,calc(100% - 7px) 18px;background-size:5px 5px,5px 5px;background-repeat:no-repeat}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-bottom-color:var(--accent)}
.form-note{font-size:13px;color:var(--faint);margin-top:18px;line-height:1.8}
.form-success{
  display:none;margin-top:20px;padding:14px 18px;border:1px solid var(--accent);
  border-radius:var(--radius-card);font-size:14px;color:var(--accent);letter-spacing:.02em;
}
.form-success.is-visible{display:block}
@media screen and (max-width:639px){.contact-block{padding:24px}}

/* ---------- 深墨 CTA 带 ---------- */
.cta-band{background:var(--ink);color:var(--paper);padding:64px 0}
.cta-band .inner{display:flex;align-items:center;justify-content:space-between;gap:40px}
.cta-band h2{font-family:var(--serif);font-size:clamp(24px,2.6vw,34px);font-weight:600;line-height:1.35;color:#fff;letter-spacing:.02em}
.cta-band p{font-size:15px;color:rgba(251,250,247,.68);margin-top:12px;max-width:600px}
.cta-band .btn-primary{background:var(--paper);color:var(--ink)}
.cta-band .btn-primary:hover{background:var(--accent);color:#fff}
.cta-band .btn-ghost{color:var(--paper);border-color:var(--line-dark)}
.cta-band .btn-ghost:hover{background:var(--paper);color:var(--ink);border-color:var(--paper)}
@media screen and (max-width:1023px){.cta-band .inner{flex-direction:column;align-items:flex-start;gap:26px}}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--paper);border-top:1px solid var(--line);padding:72px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:52px}
.footer-brand .brand{margin-bottom:18px}
.footer-brand p{font-size:14.5px;color:var(--muted);max-width:320px;line-height:1.85}
.footer-col h4{font-family:var(--serif);font-size:16px;color:var(--ink);margin-bottom:18px;font-weight:600;letter-spacing:.04em}
.footer-col li{margin-bottom:12px}
.footer-col a{font-size:14.5px;color:var(--muted);transition:color var(--ease);position:relative}
.footer-col a:hover{color:var(--accent)}
.footer-col p{font-size:14.5px;color:var(--muted);line-height:1.9}
.footer-bottom{
  border-top:1px solid var(--line);padding:22px 0;display:flex;align-items:center;
  justify-content:space-between;gap:20px;flex-wrap:wrap;font-size:13px;color:var(--faint);
}
.footer-social{display:flex;gap:18px}
.footer-social a{font-size:15px;color:var(--faint);transition:color var(--ease)}
.footer-social a:hover{color:var(--accent)}
@media screen and (max-width:1023px){.footer-grid{grid-template-columns:1fr 1fr}}
@media screen and (max-width:639px){.footer-grid{grid-template-columns:1fr;gap:32px}.site-footer{padding-top:56px}}

/* ---------- 进场动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s ease-out,transform .5s ease-out}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: article */
:root{
  --ink:#16211D;
  --ink-2:#2A3A33;
  --accent:#C0562F;
  --accent-2:#4C6B5C;
  --paper:#FBFAF7;
  --sand:#EFE9DE;
  --card:#FFFFFF;
  --line:rgba(22,33,29,.12);
  --line-dark:rgba(251,250,247,.18);
  --text:#1B1B1A;
  --muted:#5A5A55;
  --faint:#8B8B84;
  --serif:"Noto Serif SC","Source Han Serif SC",Georgia,"Songti SC",serif;
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --radius:6px;
  --radius-sm:2px;
  --shadow-hover:0 12px 32px rgba(22,33,29,.06);
  --sec-y:120px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{margin:0;font-weight:600;line-height:1.3}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;appearance:none;border:0;background:none;cursor:pointer}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:2px solid var(--accent);outline-offset:2px;border-radius:2px;
}
.grid-container{width:100%;max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px}
.serif{font-family:var(--serif)}
.clamp-2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.clamp-3{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}

/* ---------- topbar ---------- */
.topbar{background:var(--sand);border-bottom:1px solid var(--line)}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:34px;font-size:13px;color:var(--muted)}
.topbar-inner a{color:var(--ink-2);display:inline-flex;align-items:center;gap:8px;transition:color .24s ease}
.topbar-inner a:hover{color:var(--accent)}
.topbar-inner i{font-size:11px;transition:transform .24s ease}
.topbar-inner a:hover i{transform:translateX(4px)}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(251,250,247,.92);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
  transition:padding .24s ease;
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;height:76px;transition:height .24s ease}
.site-header.is-scrolled .nav-inner{height:62px}
.brand{display:inline-flex;align-items:center;gap:10px;font-family:var(--serif);font-size:21px;letter-spacing:.02em;color:var(--ink)}
.brand .dot{width:6px;height:6px;border-radius:50%;background:var(--accent);flex:0 0 auto}
.nav-links{display:flex;align-items:center;gap:34px}
.nav-links a{position:relative;display:inline-block;padding:6px 0;font-size:15px;color:var(--muted);transition:color .24s ease}
.nav-links a::after{content:"";position:absolute;left:0;bottom:0;width:0;height:1px;background:var(--accent);transition:width .24s ease-out}
.nav-links a:hover{color:var(--ink)}
.nav-links a:hover::after{width:100%}
.nav-links a.active{color:var(--ink)}
.nav-links a.active::after{width:100%;height:2px}
.nav-actions{display:flex;align-items:center;gap:18px}
.btn-outline{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 20px;font-size:14px;color:var(--ink);
  border:1px solid rgba(22,33,29,.28);border-radius:var(--radius-sm);
  transition:all .24s ease;background:transparent;white-space:nowrap;
}
.btn-outline:hover{background:var(--ink);border-color:var(--ink);color:var(--paper)}
.nav-toggle{display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:var(--radius-sm);align-items:center;justify-content:center;color:var(--ink)}
.nav-toggle i{font-size:15px}

/* ---------- drawer ---------- */
.drawer{
  position:fixed;inset:0;z-index:120;background:var(--paper);
  padding:28px 24px 40px;display:flex;flex-direction:column;
  transform:translateY(-12px);opacity:0;pointer-events:none;
  transition:opacity .28s ease,transform .28s ease;
}
.drawer.is-open{opacity:1;transform:none;pointer-events:auto}
.drawer-top{display:flex;align-items:center;justify-content:space-between;padding-bottom:24px;border-bottom:1px solid var(--line)}
.drawer-close{width:44px;height:44px;border-radius:50%;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;color:var(--ink)}
.drawer-close i{font-size:16px}
.drawer-links{display:flex;flex-direction:column;margin-top:16px}
.drawer-links a{
  font-family:var(--serif);font-size:26px;color:var(--ink);
  padding:20px 0;border-bottom:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;
}
.drawer-links a span{font-family:var(--sans);font-size:12px;color:var(--faint);letter-spacing:.08em}
.drawer-note{margin-top:auto;font-size:13px;color:var(--faint)}

/* ---------- article head ---------- */
.article-head{background:var(--paper);padding:72px 0 56px;border-bottom:1px solid var(--line)}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--faint);margin-bottom:26px}
.breadcrumb a{color:var(--muted);border-bottom:1px solid transparent;transition:all .24s ease}
.breadcrumb a:hover{color:var(--accent);border-bottom-color:rgba(192,86,47,.55)}
.breadcrumb .sep{color:rgba(22,33,29,.25)}
.breadcrumb .current{color:var(--ink-2)}
.badge{
  display:inline-block;padding:4px 14px;border:1px solid rgba(76,107,92,.5);
  border-radius:999px;font-size:13px;color:var(--accent-2);letter-spacing:.04em;
}
.article-head h1{
  font-family:var(--serif);
  font-size:clamp(30px,4vw,46px);
  line-height:1.22;
  letter-spacing:.02em;
  color:var(--ink);
  margin:22px 0 24px;
  max-width:900px;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;font-size:13px;color:var(--faint)}
.article-meta .dot-sep{width:4px;height:4px;border-radius:50%;background:rgba(22,33,29,.22)}
.article-meta strong{font-weight:400;color:var(--muted)}

/* ---------- layout ---------- */
.article-wrap{padding:72px 0 96px}
.article-layout{display:grid;grid-template-columns:minmax(0,760px) 260px;gap:72px;justify-content:center}

/* ---------- article body ---------- */
.article-body{color:var(--text)}
.article-body>*:first-child{margin-top:0}
.article-body p{margin:0 0 22px;font-size:17px;line-height:1.85}
.article-body h2{
  font-family:var(--serif);font-weight:600;
  font-size:clamp(23px,2.3vw,28px);line-height:1.35;
  color:var(--ink);margin:48px 0 16px;padding-top:4px;
}
.article-body h3{font-size:20px;color:var(--ink-2);margin:34px 0 12px}
.article-body h4{font-size:17px;color:var(--ink-2);margin:26px 0 10px}
.article-body ul,.article-body ol{margin:0 0 22px;padding-left:24px}
.article-body ul li,.article-body ol li{list-style:square;margin-bottom:10px;font-size:16px;line-height:1.8}
.article-body ol li{list-style:decimal}
.article-body ul li::marker,.article-body ol li::marker{color:var(--accent)}
.article-body blockquote{
  margin:0 0 26px;padding:22px 26px;
  background:var(--sand);border-left:3px solid var(--accent);
  color:var(--ink-2);font-size:16px;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body a{color:var(--accent);border-bottom:1px solid rgba(192,86,47,.4);transition:border-color .24s ease}
.article-body a:hover{border-bottom-color:var(--accent);border-bottom-width:2px}
.article-body img{width:100%;border-radius:4px;margin:24px 0}
.article-body figure{margin:26px 0}
.article-body figure img{margin:0}
.article-body figcaption{font-size:13px;color:var(--faint);margin-top:12px;text-align:center}
.article-body table{width:100%;border-collapse:collapse;margin:0 0 26px;font-size:15px}
.article-body th,.article-body td{border-bottom:1px solid var(--line);padding:12px 10px;text-align:left;vertical-align:top}
.article-body th{font-size:13px;color:var(--faint);letter-spacing:.08em;font-weight:400}
.article-body hr{border:0;border-top:1px solid var(--line);margin:40px 0}
.article-body strong{color:var(--ink);font-weight:600}

/* ---------- empty state ---------- */
.empty-state{
  border:1px solid var(--line);border-radius:var(--radius);
  background:var(--card);padding:56px 32px;text-align:center;min-height:260px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:18px;
}
.empty-state h2{font-family:var(--serif);font-size:26px;color:var(--ink)}
.empty-state p{color:var(--muted);font-size:16px;max-width:420px}

/* ---------- buttons ---------- */
.btn-primary{
  display:inline-flex;align-items:center;gap:10px;
  background:var(--ink);color:var(--paper);border:1px solid var(--ink);
  border-radius:var(--radius-sm);padding:14px 28px;font-size:15px;
  transition:all .24s ease;
}
.btn-primary:hover{background:var(--accent);border-color:var(--accent);color:#fff;transform:translateY(-2px)}
.btn-primary.btn-sm{padding:11px 20px;font-size:14px}
.btn-ghost{
  display:inline-flex;align-items:center;gap:10px;
  border:1px solid var(--line-dark);color:var(--paper);
  border-radius:var(--radius-sm);padding:14px 28px;font-size:15px;
  transition:all .24s ease;background:transparent;
}
.btn-ghost:hover{background:var(--paper);color:var(--ink);border-color:var(--paper);transform:translateY(-2px)}
.link-more{display:inline-flex;align-items:center;gap:9px;font-size:14px;color:var(--ink-2);transition:color .24s ease}
.link-more i{font-size:12px;transition:transform .24s ease}
.link-more:hover{color:var(--accent)}
.link-more:hover i{transform:translateX(4px)}

/* ---------- post-foot blocks ---------- */
.post-tags{display:flex;flex-wrap:wrap;gap:10px;margin:56px 0 0;padding-top:32px;border-top:1px solid var(--line)}
.post-tags .badge{border-color:var(--line);color:var(--muted)}
.post-tags .badge:hover{border-color:var(--accent);color:var(--accent)}

.related{margin-top:72px;padding-top:56px;border-top:1px solid var(--line)}
.related h2{font-family:var(--serif);font-size:clamp(22px,2.2vw,28px);color:var(--ink);margin-bottom:32px}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.rel-card{
  display:flex;flex-direction:column;gap:14px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:0 0 24px;overflow:hidden;transition:border-color .24s ease,box-shadow .24s ease,transform .24s ease;
}
.rel-card:hover{border-color:var(--accent);box-shadow:var(--shadow-hover);transform:translateY(-3px)}
.rel-thumb{aspect-ratio:4/3;overflow:hidden;background:var(--sand)}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .6s ease}
.rel-card:hover .rel-thumb img{transform:scale(1.03)}
.rel-card .badge{margin:0 24px;align-self:flex-start}
.rel-card h3{font-family:var(--serif);font-size:19px;color:var(--ink);margin:0 24px;line-height:1.45}
.rel-card p{margin:0 24px;font-size:14px;color:var(--muted);line-height:1.7}
.rel-card .link-more{margin:2px 24px 0}

/* ---------- sidebar ---------- */
.article-side{position:relative}
.side-inner{position:sticky;top:104px;display:flex;flex-direction:column;gap:22px}
.side-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px 24px}
.side-card--sand{background:var(--sand);border-color:transparent}
.side-title{
  font-family:var(--serif);font-size:17px;color:var(--ink);
  padding-bottom:14px;margin-bottom:16px;border-bottom:1px solid var(--line);
}
.side-list li{border-bottom:1px solid var(--line)}
.side-list li:last-child{border-bottom:0}
.side-list a{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:12px 0;font-size:14px;color:var(--muted);transition:color .24s ease}
.side-list a i{font-size:11px;color:var(--faint);transition:transform .24s ease}
.side-list a:hover{color:var(--accent)}
.side-list a:hover i{transform:translateX(3px);color:var(--accent)}
.side-card p{font-size:14px;color:var(--muted);line-height:1.8;margin-bottom:18px}
.info-rows{display:flex;flex-direction:column;gap:0}
.info-row{display:flex;justify-content:space-between;gap:14px;padding:11px 0;border-bottom:1px solid var(--line);font-size:13px}
.info-row:last-child{border-bottom:0}
.info-row dt{color:var(--faint);margin:0}
.info-row dd{margin:0;color:var(--ink-2);text-align:right}

/* ---------- cta band ---------- */
.cta-band{
  position:relative;background:var(--ink);color:var(--paper);padding:84px 0;
  background-image:linear-gradient(rgba(22,33,29,.88),rgba(22,33,29,.92)),url(/assets/images/backpic/back-2.webp);
  background-size:cover;background-position:center;
}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:40px}
.cta-inner h2{font-family:var(--serif);font-size:clamp(24px,2.6vw,34px);margin-bottom:14px}
.cta-inner p{color:rgba(251,250,247,.72);font-size:16px;max-width:560px}

/* ---------- footer ---------- */
.site-footer{background:var(--paper);border-top:1px solid var(--line);padding:72px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:48px}
.footer-brand .brand{margin-bottom:18px}
.footer-brand p{font-size:14px;color:var(--muted);line-height:1.8;max-width:320px}
.footer-col h4{font-family:var(--serif);font-size:15px;color:var(--ink);margin-bottom:18px;letter-spacing:.02em}
.footer-col ul li{margin-bottom:11px}
.footer-col ul a,
.footer-col p a{font-size:14px;color:var(--muted);border-bottom:1px solid transparent;transition:all .24s ease}
.footer-col ul a:hover,
.footer-col p a:hover{color:var(--accent);border-bottom-color:rgba(192,86,47,.5)}
.footer-col p{font-size:14px;color:var(--muted);line-height:1.9}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  margin-top:56px;padding-top:24px;border-top:1px solid var(--line);
  font-size:13px;color:var(--faint);
}
.footer-social{display:flex;align-items:center;gap:14px}
.footer-social a{
  width:36px;height:36px;border:1px solid var(--line);border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--muted);font-size:14px;transition:all .24s ease;
}
.footer-social a:hover{color:var(--accent);border-color:var(--accent);transform:translateY(-2px)}

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

/* ---------- responsive ---------- */
@media screen and (max-width:1023px){
  :root{--sec-y:88px}
  .nav-links{display:none}
  .nav-toggle{display:inline-flex}
  .nav-actions .btn-outline{display:none}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:48px}
  .article-side{order:2}
  .side-inner{position:static}
  .related-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:28px}
  .article-head{padding:56px 0 44px}
  .article-wrap{padding:56px 0 72px}
}
@media screen and (max-width:639px){
  :root{--sec-y:64px}
  .grid-container{padding-left:20px;padding-right:20px}
  .topbar-inner span{display:none}
  .topbar-inner{justify-content:flex-end}
  .article-head{padding:40px 0 36px}
  .article-head h1{margin:18px 0 20px}
  .article-body p{font-size:16px}
  .related-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:36px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:16px}
  .cta-band{padding:64px 0}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category1 */
:root{
  --ink:#16211D;
  --ink-2:#2A3A33;
  --accent:#C0562F;
  --accent-2:#4C6B5C;
  --paper:#FBFAF7;
  --sand:#EFE9DE;
  --card:#FFFFFF;
  --line:rgba(22,33,29,.12);
  --line-strong:rgba(22,33,29,.24);
  --line-invert:rgba(251,250,247,.18);
  --text:#1B1B1A;
  --muted:#5A5A55;
  --faint:#8B8B84;
  --serif:"Noto Serif SC","Source Han Serif SC",Georgia,"Songti SC",serif;
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --radius-card:6px;
  --radius-btn:2px;
  --radius-img:4px;
  --shadow-hover:0 12px 32px rgba(22,33,29,.06);
  --sp-section:120px;
  --sp-section-md:88px;
  --sp-section-sm:64px;
  --ease:240ms cubic-bezier(.2,.6,.2,1);
}
*,
*::before,
*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.85;
  font-weight:400;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;border-radius:var(--radius-img);}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;font-size:inherit;color:inherit;background:none;border:0;cursor:pointer;}
h1,h2,h3,h4{font-family:var(--serif);font-weight:500;letter-spacing:.02em;color:var(--ink);margin:0;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}

/* ===== 容器覆盖 ===== */
.grid-container{
  max-width:1200px;
  padding-left:24px;
  padding-right:24px;
  margin-left:auto;
  margin-right:auto;
}
.grid-container.full{max-width:100%;padding-left:0;padding-right:0;}

/* ===== 顶栏信息条 ===== */
.topbar{
  background:var(--ink);
  color:rgba(251,250,247,.72);
  font-size:13px;
  line-height:34px;
  height:34px;
  letter-spacing:.04em;
}
.topbar .grid-container{display:flex;justify-content:space-between;align-items:center;gap:16px;}
.topbar a{color:rgba(251,250,247,.86);border-bottom:1px solid rgba(251,250,247,.28);transition:color var(--ease),border-color var(--ease);}
.topbar a:hover{color:#fff;border-color:var(--accent);}
.topbar .topbar-left i{margin-right:6px;color:var(--accent);}

/* ===== 导航 ===== */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:var(--paper);
  border-bottom:1px solid var(--line);
  transition:background var(--ease),box-shadow var(--ease);
}
.site-header.is-tight{background:rgba(251,250,247,.88);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);box-shadow:0 1px 0 var(--line);}
.nav-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:76px;
  transition:height var(--ease);
}
.site-header.is-tight .nav-inner{height:62px;}
.brand{
  display:inline-flex;
  align-items:center;
  gap:9px;
  font-family:var(--serif);
  font-size:21px;
  font-weight:600;
  color:var(--ink);
  letter-spacing:.04em;
  white-space:nowrap;
}
.brand .dot{
  width:6px;height:6px;border-radius:50%;
  background:var(--accent);
  display:inline-block;
}
.nav-links{display:flex;align-items:center;gap:34px;}
.nav-links a{
  position:relative;
  font-size:15px;
  color:var(--muted);
  padding:6px 0;
  transition:color var(--ease);
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:0;bottom:0;
  width:100%;height:1px;
  background:var(--accent);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform var(--ease);
}
.nav-links a:hover{color:var(--ink);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.active{color:var(--ink);}
.nav-links a.active::after{transform:scaleX(1);height:2px;background:var(--ink);}
.nav-right{display:flex;align-items:center;gap:18px;}
.btn-outline{
  display:inline-block;
  border:1px solid var(--line-strong);
  border-radius:var(--radius-btn);
  padding:11px 22px;
  font-size:14px;
  color:var(--ink);
  background:transparent;
  transition:background var(--ease),color var(--ease),border-color var(--ease),transform var(--ease);
}
.btn-outline:hover{background:var(--ink);color:var(--paper);border-color:var(--ink);transform:translateY(-2px);}
.nav-toggle{
  display:none;
  width:42px;height:42px;
  border:1px solid var(--line-strong);
  border-radius:var(--radius-btn);
  color:var(--ink);
  font-size:16px;
  align-items:center;justify-content:center;
}

/* ===== 移动端抽屉 ===== */
.drawer{
  position:fixed;
  inset:0;
  background:var(--paper);
  z-index:120;
  display:flex;
  flex-direction:column;
  justify-content:center;
  padding:80px 32px;
  transform:translateY(-12px);
  opacity:0;
  pointer-events:none;
  transition:opacity 320ms ease,transform 320ms ease;
}
.drawer.is-open{opacity:1;transform:translateY(0);pointer-events:auto;}
.drawer a.drawer-link{
  display:block;
  font-family:var(--serif);
  font-size:30px;
  color:var(--ink);
  padding:22px 0;
  border-bottom:1px solid var(--line);
}
.drawer a.drawer-link.active{color:var(--accent);}
.drawer-close{
  position:absolute;
  right:24px;bottom:32px;
  width:54px;height:54px;
  border-radius:50%;
  border:1px solid var(--line-strong);
  display:flex;align-items:center;justify-content:center;
  font-size:18px;color:var(--ink);
}
.drawer-brand{
  position:absolute;top:28px;left:32px;
  font-family:var(--serif);font-size:20px;color:var(--ink);
  display:flex;align-items:center;gap:9px;
}
.drawer-brand .dot{width:6px;height:6px;border-radius:50%;background:var(--accent);}

/* ===== 面包屑 ===== */
.breadcrumb{
  font-size:13px;
  color:var(--faint);
  letter-spacing:.04em;
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  align-items:center;
}
.breadcrumb a{color:var(--faint);transition:color var(--ease);}
.breadcrumb a:hover{color:var(--accent);}
.breadcrumb span.sep{color:var(--line-strong);}
.breadcrumb span.current{color:var(--ink-2);}

/* ===== 按钮体系 ===== */
.btn-primary{
  display:inline-block;
  background:var(--ink);
  color:var(--paper);
  border-radius:var(--radius-btn);
  padding:14px 28px;
  font-size:15px;
  letter-spacing:.04em;
  transition:background var(--ease),transform var(--ease),box-shadow var(--ease);
}
.btn-primary:hover{background:var(--accent);transform:translateY(-2px);box-shadow:0 12px 32px rgba(22,33,29,.12);}
.btn-primary.on-dark{background:var(--accent);color:#fff;}
.btn-primary.on-dark:hover{background:#fff;color:var(--ink);}
.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  color:var(--ink);
  border-bottom:1px solid transparent;
  transition:color var(--ease),border-color var(--ease);
}
.link-arrow i{transition:transform var(--ease);font-size:12px;}
.link-arrow:hover{color:var(--accent);border-color:var(--accent);}
.link-arrow:hover i{transform:translateX(4px);}

/* ===== 标签 ===== */
.badge{
  display:inline-block;
  font-size:13px;
  line-height:1.6;
  padding:3px 13px;
  border:1px solid var(--accent-2);
  color:var(--accent-2);
  border-radius:999px;
  letter-spacing:.06em;
}
.badge.neutral{border-color:var(--line-strong);color:var(--faint);}

/* ===== Hero（窄型） ===== */
.cat-hero{
  background:var(--sand);
  padding:64px 0 72px;
  position:relative;
  overflow:hidden;
}
.cat-hero .breadcrumb{margin-bottom:26px;}
.cat-hero h1{
  font-size:clamp(34px,4.6vw,60px);
  line-height:1.14;
  max-width:15em;
  margin:18px 0 20px;
}
.cat-hero .hero-sub{
  font-size:17px;
  color:var(--muted);
  max-width:640px;
  line-height:1.8;
}
.cat-hero .hero-actions{margin-top:34px;display:flex;align-items:center;gap:26px;flex-wrap:wrap;}
.hero-meta{
  margin-top:46px;
  padding-top:22px;
  border-top:1px solid var(--line);
  display:flex;
  flex-wrap:wrap;
  gap:44px;
}
.hero-meta div{font-size:13px;color:var(--faint);letter-spacing:.04em;}
.hero-meta strong{
  display:block;
  font-family:var(--serif);
  font-size:22px;
  font-weight:500;
  color:var(--ink);
  letter-spacing:.02em;
}

/* ===== 通用板块 ===== */
.section{padding:var(--sp-section) 0;}
.section.tight{padding:88px 0;}
.section.sand{background:var(--sand);}
.section-head{max-width:760px;margin-bottom:48px;}
.section-head .eyebrow{
  font-size:13px;
  letter-spacing:.16em;
  color:var(--accent);
  text-transform:uppercase;
  margin-bottom:14px;
  display:block;
}
.section-head h2{
  font-size:clamp(26px,3vw,40px);
  line-height:1.25;
  margin-bottom:16px;
}
.section-head p{font-size:16px;color:var(--muted);}

/* ===== 交错图文区块 ===== */
.feature-row{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:64px;
  align-items:center;
  padding:56px 0;
  border-top:1px solid var(--line);
}
.feature-row:first-of-type{border-top:0;padding-top:0;}
.feature-row:last-of-type{padding-bottom:0;}
.feature-row .fr-text{max-width:520px;}
.feature-row .fr-text h2{
  font-size:clamp(24px,2.4vw,32px);
  line-height:1.3;
  margin:16px 0 16px;
}
.feature-row .fr-text p{color:var(--muted);font-size:16px;margin-bottom:14px;}
.fr-list{margin:22px 0 26px;}
.fr-list li{
  display:flex;
  gap:12px;
  align-items:flex-start;
  padding:12px 0;
  border-top:1px solid var(--line);
  font-size:15px;
  color:var(--ink-2);
}
.fr-list li:last-child{border-bottom:1px solid var(--line);}
.fr-list li i{color:var(--accent);font-size:11px;margin-top:9px;}
.fr-media{position:relative;}
.fr-media::before{
  content:"";
  position:absolute;
  left:-20px;top:20px;
  width:60%;height:70%;
  background:var(--sand);
  border-radius:var(--radius-img);
  z-index:0;
}
.section.sand .fr-media::before{background:#E3DACB;}
.fr-media img{
  position:relative;
  z-index:1;
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  transition:transform 600ms ease;
}
.fr-media:hover img{transform:scale(1.03);}
.feature-row.reverse .fr-media{order:2;}

/* ===== 编号列表 ===== */
.num-list{border-top:1px solid var(--line);}
.num-item{
  display:grid;
  grid-template-columns:72px 1fr 28px;
  gap:24px;
  align-items:center;
  padding:30px 0;
  border-bottom:1px solid var(--line);
  transition:transform var(--ease),border-color var(--ease);
}
.num-item .num{
  font-family:var(--serif);
  font-size:26px;
  color:var(--faint);
  letter-spacing:.06em;
  transition:color var(--ease);
}
.num-item h3{font-size:20px;margin-bottom:6px;}
.num-item p{font-size:15px;color:var(--muted);}
.num-item .arrow{color:var(--faint);transition:transform var(--ease),color var(--ease);}
.num-item:hover{transform:translateX(4px);border-color:var(--accent);}
.num-item:hover .num{color:var(--accent);}
.num-item:hover .arrow{transform:translateX(4px);color:var(--accent);}

/* ===== 数据栏 ===== */
.stat-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:0;
}
.stat{
  border-top:1px solid var(--line-strong);
  padding:32px 26px 8px 0;
}
.stat .num{
  font-family:var(--serif);
  font-size:clamp(34px,4vw,52px);
  line-height:1.1;
  color:var(--accent);
  display:block;
  margin-bottom:14px;
}
.stat h3{font-size:16px;margin-bottom:8px;font-family:var(--sans);font-weight:600;letter-spacing:.02em;}
.stat p{font-size:13px;color:var(--faint);line-height:1.75;}

/* ===== 卡片 ===== */
.card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:28px;
  height:100%;
  transition:border-color var(--ease),box-shadow var(--ease),transform var(--ease);
}
.card:hover{border-color:var(--accent);box-shadow:var(--shadow-hover);transform:translateY(-2px);}
.card h3{font-size:19px;margin-bottom:10px;}
.card p{font-size:15px;color:var(--muted);margin-bottom:16px;}
.card .card-ico{
  width:38px;height:38px;
  border:1px solid var(--line-strong);
  border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  color:var(--accent-2);
  font-size:15px;
  margin-bottom:18px;
}
.grid-cards{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:32px;
}

/* ===== FAQ ===== */
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  text-align:left;
  padding:24px 0;
  font-size:17px;
  color:var(--ink);
  transition:color var(--ease);
}
.faq-q i{
  position:relative;
  width:16px;height:16px;
  flex:0 0 16px;
}
.faq-q i::before,
.faq-q i::after{
  content:"";
  position:absolute;
  background:var(--ink-2);
  transition:transform var(--ease),background var(--ease);
}
.faq-q i::before{left:0;top:7.5px;width:16px;height:1.5px;}
.faq-q i::after{left:7.25px;top:0;width:1.5px;height:16px;}
.faq-item.is-open .faq-q{color:var(--accent);}
.faq-item.is-open .faq-q i::before{background:var(--accent);}
.faq-item.is-open .faq-q i::after{transform:scaleY(0);background:var(--accent);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height 360ms ease;
}
.faq-a-inner{
  padding:0 40px 26px 0;
  font-size:15px;
  color:var(--muted);
  line-height:1.85;
}

/* ===== CTA 深墨带 ===== */
.cta-band{
  background:var(--ink);
  color:var(--paper);
  padding:74px 0;
}
.cta-band .cta-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:40px;
  flex-wrap:wrap;
}
.cta-band h2{
  color:var(--paper);
  font-size:clamp(24px,2.8vw,34px);
  line-height:1.3;
  margin-bottom:12px;
}
.cta-band p{color:rgba(251,250,247,.7);font-size:15px;max-width:520px;}

/* ===== 页脚 ===== */
.site-footer{
  background:var(--paper);
  border-top:1px solid var(--line);
  padding:72px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:48px;
  padding-bottom:56px;
}
.footer-brand .brand{margin-bottom:18px;font-size:20px;}
.footer-brand p{font-size:14px;color:var(--muted);line-height:1.8;max-width:300px;}
.footer-col h4{
  font-family:var(--sans);
  font-size:14px;
  font-weight:600;
  letter-spacing:.08em;
  color:var(--ink);
  margin-bottom:18px;
}
.footer-col ul li{margin-bottom:11px;}
.footer-col ul li a{font-size:14px;color:var(--muted);transition:color var(--ease);}
.footer-col ul li a:hover{color:var(--accent);}
.footer-col p{font-size:14px;color:var(--muted);line-height:1.9;}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:22px 0;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  flex-wrap:wrap;
  font-size:13px;
  color:var(--faint);
  letter-spacing:.04em;
}
.footer-social{display:flex;gap:16px;}
.footer-social a{color:var(--faint);font-size:16px;transition:color var(--ease),transform var(--ease);}
.footer-social a:hover{color:var(--accent);transform:translateY(-2px);}

/* ===== 进场动画 ===== */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s ease-out,transform .5s ease-out;}
.reveal.is-in{opacity:1;transform:none;}

/* ===== 响应式 ===== */
@media screen and (max-width:1023px){
  :root{--sp-section:var(--sp-section-md);}
  .nav-links{display:none;}
  .nav-right .btn-outline{display:none;}
  .nav-toggle{display:flex;}
  .feature-row{grid-template-columns:1fr;gap:34px;}
  .feature-row.reverse .fr-media{order:0;}
  .grid-cards{grid-template-columns:repeat(2,1fr);gap:24px;}
  .stat-grid{grid-template-columns:repeat(2,1fr);}
  .stat{padding:28px 20px 8px 0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px;}
}
@media screen and (max-width:639px){
  :root{--sp-section:var(--sp-section-sm);}
  .grid-container{padding-left:20px;padding-right:20px;}
  body{font-size:15.5px;}
  .topbar .topbar-left{display:none;}
  .topbar .grid-container{justify-content:flex-end;}
  .cat-hero{padding:44px 0 52px;}
  .hero-meta{gap:26px;}
  .grid-cards{grid-template-columns:1fr;}
  .stat-grid{grid-template-columns:1fr;}
  .stat{padding:24px 0 6px;}
  .num-item{grid-template-columns:48px 1fr;gap:16px;padding:24px 0;}
  .num-item .arrow{display:none;}
  .feature-row{padding:40px 0;}
  .fr-media::before{left:-12px;top:14px;}
  .footer-grid{grid-template-columns:1fr;gap:34px;}
  .card{padding:20px;}
  .cta-band{padding:56px 0;}
  .faq-a-inner{padding-right:0;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category3 */
:root{
  --ink:#16211D;
  --ink-2:#2A3A33;
  --accent:#C0562F;
  --accent-2:#4C6B5C;
  --paper:#FBFAF7;
  --sand:#EFE9DE;
  --card:#FFFFFF;
  --line:rgba(22,33,29,.12);
  --line-dark:rgba(251,250,247,.18);
  --text:#1B1B1A;
  --muted:#5A5A55;
  --faint:#8B8B84;
  --serif:"Noto Serif SC","Source Han Serif SC",Georgia,"Songti SC",serif;
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --radius-card:6px;
  --radius-btn:2px;
  --radius-pill:999px;
  --radius-img:4px;
  --sec:120px;
}

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

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

body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.85;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}

h1,h2,h3,h4{
  font-family:var(--serif);
  color:var(--ink);
  font-weight:500;
  letter-spacing:.02em;
  margin:0;
  line-height:1.25;
}

h1{font-size:clamp(38px,5.2vw,72px);line-height:1.12;}
h2{font-size:clamp(26px,3vw,40px);}
h3{font-size:21px;}
h4{font-size:16px;}

p{margin:0 0 22px;}
p:last-child{margin-bottom:0;}

a{color:var(--ink);text-decoration:none;transition:color .24s ease;}
img{max-width:100%;display:block;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}

a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:2px;
}

.grid-container{
  max-width:1200px;
  padding-left:24px;
  padding-right:24px;
  margin-left:auto;
  margin-right:auto;
}

/* ---------- 顶部信息条 ---------- */
.topbar{
  background:var(--ink);
  color:rgba(251,250,247,.72);
  font-size:13px;
  letter-spacing:.02em;
}
.topbar-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  height:34px;
}
.topbar a{
  color:rgba(251,250,247,.86);
  border-bottom:1px solid rgba(251,250,247,.28);
  padding-bottom:1px;
}
.topbar a:hover{color:#fff;border-bottom-color:var(--accent);}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:var(--paper);
  border-bottom:1px solid var(--line);
  transition:background .3s ease,box-shadow .3s ease;
}
.site-header.is-scrolled{
  background:rgba(251,250,247,.92);
  backdrop-filter:blur(8px);
  box-shadow:0 1px 0 var(--line);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:76px;
  transition:height .3s ease;
}
.site-header.is-scrolled .header-inner{height:62px;}

.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--serif);
  font-size:22px;
  letter-spacing:.04em;
  color:var(--ink);
  white-space:nowrap;
}
.brand .dot{
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--accent);
  display:inline-block;
  flex:0 0 auto;
}

.nav-links{
  display:flex;
  align-items:center;
  gap:34px;
}
.nav-links a{
  position:relative;
  display:inline-block;
  font-size:15px;
  color:var(--muted);
  padding:6px 0;
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:0;
  bottom:0;
  width:100%;
  height:1px;
  background:var(--accent);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .24s ease-out;
}
.nav-links a:hover{color:var(--ink);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.active{color:var(--ink);}
.nav-links a.active::after{transform:scaleX(1);height:2px;}

.header-actions{display:flex;align-items:center;gap:14px;}
.nav-toggle{
  display:none;
  width:42px;
  height:42px;
  border:1px solid var(--line);
  background:transparent;
  border-radius:var(--radius-btn);
  color:var(--ink);
  font-size:16px;
  cursor:pointer;
  transition:border-color .24s ease,color .24s ease;
}
.nav-toggle:hover{border-color:var(--accent);color:var(--accent);}
.drawer-close{
  display:none;
  position:fixed;
  right:24px;
  bottom:32px;
  width:56px;
  height:56px;
  border-radius:50%;
  border:1px solid var(--line);
  background:var(--paper);
  color:var(--ink);
  font-size:18px;
  cursor:pointer;
  z-index:95;
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  border-radius:var(--radius-btn);
  font-size:15px;
  line-height:1;
  padding:15px 28px;
  border:1px solid transparent;
  cursor:pointer;
  transition:background .24s ease,color .24s ease,border-color .24s ease,transform .24s ease;
}
.btn-primary{
  background:var(--ink);
  color:var(--paper);
}
.btn-primary:hover{
  background:var(--accent);
  color:#fff;
  transform:translateY(-2px);
}
.btn-outline{
  background:transparent;
  color:var(--ink);
  border-color:var(--line);
}
.btn-outline:hover{
  background:var(--ink);
  color:var(--paper);
  border-color:var(--ink);
}
.btn-light{
  background:var(--paper);
  color:var(--ink);
}
.btn-light:hover{
  background:var(--accent);
  color:#fff;
  transform:translateY(-2px);
}
.btn-sm{padding:11px 20px;font-size:14px;}

.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:15px;
  color:var(--ink);
  border-bottom:1px solid transparent;
  padding-bottom:2px;
}
.link-arrow i{transition:transform .24s ease;font-size:13px;color:var(--accent);}
.link-arrow:hover{color:var(--accent);}
.link-arrow:hover i{transform:translateX(4px);}

/* ---------- 标签 / 徽章 ---------- */
.tag{
  display:inline-block;
  font-size:13px;
  line-height:1;
  padding:8px 14px;
  border-radius:var(--radius-pill);
  border:1px solid rgba(76,107,92,.42);
  color:var(--accent-2);
  letter-spacing:.04em;
}
.tag-muted{
  border-color:var(--line);
  color:var(--faint);
}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--faint);
  margin-bottom:22px;
}
.breadcrumb a{color:var(--faint);}
.breadcrumb a:hover{color:var(--accent);}
.breadcrumb span.sep{color:rgba(22,33,29,.24);}

/* ---------- 内页 Hero ---------- */
.page-hero{
  background:var(--sand);
  padding:64px 0 72px;
  border-bottom:1px solid var(--line);
}
.hero-grid{
  display:grid;
  grid-template-columns:1.35fr 1fr;
  gap:56px;
  align-items:center;
}
.page-hero h1{margin-bottom:20px;}
.page-hero .lead{
  font-size:17px;
  color:var(--muted);
  max-width:44ch;
  margin-bottom:30px;
}
.hero-cta{display:flex;flex-wrap:wrap;align-items:center;gap:24px;}
.hero-media{
  position:relative;
}
.hero-media::before{
  content:"";
  position:absolute;
  left:-16px;
  top:-16px;
  width:64%;
  height:56%;
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--radius-img);
  z-index:0;
}
.hero-media img{
  position:relative;
  z-index:1;
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  border-radius:var(--radius-img);
}
.hero-meta{
  display:flex;
  flex-wrap:wrap;
  gap:28px;
  margin-top:34px;
  padding-top:22px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--faint);
  letter-spacing:.04em;
}
.hero-meta strong{
  display:block;
  font-family:var(--serif);
  font-size:22px;
  color:var(--ink);
  font-weight:500;
  letter-spacing:.02em;
  margin-bottom:2px;
}

/* ---------- 通用板块 ---------- */
.section{padding:var(--sec) 0;}
.section-sand{background:var(--sand);}
.section-line{border-top:1px solid var(--line);}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:32px;
  margin-bottom:48px;
}
.section-head .eyebrow{
  display:block;
  font-size:13px;
  letter-spacing:.16em;
  color:var(--faint);
  text-transform:uppercase;
  margin-bottom:14px;
}
.section-head p{
  max-width:52ch;
  color:var(--muted);
  font-size:16px;
  margin:14px 0 0;
}

/* ---------- 数据条 ---------- */
.stats{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:0;
  border-top:1px solid var(--line);
}
.stat{
  padding:32px 28px 8px 0;
  border-right:1px solid var(--line);
}
.stat:last-child{border-right:none;}
.stat .num{
  display:block;
  font-family:var(--serif);
  font-size:clamp(32px,3.4vw,48px);
  color:var(--accent);
  line-height:1.1;
  margin-bottom:8px;
}
.stat span.txt{font-size:13px;color:var(--faint);letter-spacing:.04em;}

/* ---------- 时间线 ---------- */
.timeline{position:relative;padding-left:0;}
.timeline::before{
  content:"";
  position:absolute;
  left:5px;
  top:10px;
  bottom:14px;
  width:1px;
  background:var(--line);
}
.tl-item{
  position:relative;
  padding:0 0 46px 46px;
}
.tl-item:last-child{padding-bottom:0;}
.tl-dot{
  position:absolute;
  left:0;
  top:7px;
  width:11px;
  height:11px;
  border-radius:50%;
  border:1.5px solid var(--accent-2);
  background:var(--paper);
}
.tl-item.on .tl-dot{
  background:var(--accent);
  border-color:var(--accent);
}
.tl-num{
  display:block;
  font-family:var(--sans);
  font-size:13px;
  letter-spacing:.16em;
  color:var(--faint);
  margin-bottom:8px;
}
.tl-item h3{margin-bottom:10px;}
.tl-item p{color:var(--muted);font-size:16px;max-width:62ch;}

/* ---------- 图文区块 ---------- */
.split{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:64px;
  align-items:center;
}
.split-media img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  border-radius:var(--radius-img);
}
.split-media{position:relative;}
.split-media::after{
  content:"";
  position:absolute;
  right:-14px;
  bottom:-14px;
  width:48%;
  height:40%;
  border:1px solid var(--line);
  border-radius:var(--radius-img);
  z-index:-1;
}
.split-body h2{margin-bottom:18px;}
.split-body > p{color:var(--muted);}
.point-list{margin-top:28px;}
.point-list li{
  display:flex;
  gap:14px;
  padding:16px 0;
  border-top:1px solid var(--line);
  font-size:15px;
  color:var(--muted);
}
.point-list li:last-child{border-bottom:1px solid var(--line);}
.point-list li i{
  color:var(--accent);
  font-size:12px;
  margin-top:7px;
  flex:0 0 auto;
}
.point-list li strong{
  color:var(--ink);
  font-weight:500;
  font-family:var(--serif);
  font-size:16px;
  margin-right:8px;
}

/* ---------- 反馈方式对比表 ---------- */
.cmp-wrap{overflow-x:auto;border-top:1px solid var(--line);}
.cmp-table{
  width:100%;
  min-width:680px;
  border-collapse:collapse;
  font-size:15px;
}
.cmp-table th{
  text-align:left;
  font-family:var(--sans);
  font-weight:400;
  font-size:13px;
  letter-spacing:.1em;
  color:var(--faint);
  padding:18px 22px 16px 0;
  border-bottom:1px solid var(--line);
  white-space:nowrap;
}
.cmp-table td{
  padding:26px 22px 26px 0;
  border-bottom:1px solid var(--line);
  vertical-align:top;
  color:var(--muted);
  line-height:1.75;
}
.cmp-table tbody tr:last-child td{border-bottom:1px solid var(--line);}
.cmp-table td:first-child{
  font-family:var(--serif);
  font-size:18px;
  color:var(--ink);
  white-space:nowrap;
  padding-right:36px;
}
.cmp-note{
  margin-top:20px;
  font-size:13px;
  color:var(--faint);
}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;
  background:transparent;
  border:0;
  padding:26px 0;
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:24px;
  text-align:left;
  cursor:pointer;
  font-family:var(--serif);
  font-size:17px;
  color:var(--ink);
  letter-spacing:.02em;
  transition:color .24s ease;
}
.faq-q:hover{color:var(--accent);}
.faq-item.open .faq-q{color:var(--accent);}
.faq-icon{
  position:relative;
  width:16px;
  height:16px;
  flex:0 0 auto;
  margin-top:5px;
}
.faq-icon::before,
.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--ink);
  transition:transform .3s ease,background .24s ease;
}
.faq-icon::before{left:0;top:7.5px;width:16px;height:1.5px;}
.faq-icon::after{left:7.5px;top:0;width:1.5px;height:16px;}
.faq-item.open .faq-icon::before{background:var(--accent);}
.faq-item.open .faq-icon::after{transform:scaleY(0);background:var(--accent);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .4s ease;
}
.faq-a-inner{
  padding:0 60px 28px 0;
  color:var(--muted);
  font-size:15.5px;
}

/* ---------- 深墨 CTA 带 ---------- */
.cta-band{
  background:var(--ink);
  color:rgba(251,250,247,.78);
  padding:72px 0;
}
.cta-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:40px;
}
.cta-band h2{color:var(--paper);margin-bottom:12px;}
.cta-band p{color:rgba(251,250,247,.66);font-size:16px;max-width:48ch;margin:0;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--paper);
  border-top:1px solid var(--line);
  padding:72px 0 28px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:48px;
  padding-bottom:48px;
}
.footer-brand .brand{margin-bottom:18px;}
.footer-brand p{
  font-size:14px;
  color:var(--muted);
  max-width:34ch;
  margin:0;
}
.footer-col h4{
  font-family:var(--sans);
  font-size:13px;
  letter-spacing:.14em;
  color:var(--faint);
  font-weight:400;
  margin-bottom:20px;
}
.footer-col ul li{margin-bottom:12px;}
.footer-col ul a,
.footer-col p{
  font-size:14px;
  color:var(--muted);
  line-height:1.8;
}
.footer-col ul a:hover{color:var(--accent);}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding-top:24px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--faint);
}
.footer-social{display:flex;gap:18px;}
.footer-social a{
  color:var(--faint);
  font-size:16px;
  transition:color .24s ease,transform .24s ease;
}
.footer-social a:hover{color:var(--accent);transform:translateY(-2px);}

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

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

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  :root{--sec:88px;}
  .nav-links{
    position:fixed;
    inset:0;
    background:var(--paper);
    flex-direction:column;
    align-items:flex-start;
    justify-content:center;
    gap:0;
    padding:96px 32px 120px;
    transform:translateX(100%);
    transition:transform .4s ease;
    z-index:90;
  }
  .nav-links.is-open{transform:translateX(0);}
  .nav-links a{
    width:100%;
    font-family:var(--serif);
    font-size:26px;
    color:var(--ink);
    padding:20px 0;
    border-bottom:1px solid var(--line);
    letter-spacing:.02em;
  }
  .nav-links a::after{display:none;}
  .nav-links a.active{color:var(--accent);}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;}
  .nav-links.is-open ~ .drawer-close,
  .drawer-close.is-open{display:flex;align-items:center;justify-content:center;}
  .header-actions .btn-header{display:none;}

  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero-media::before{display:none;}
  .hero-media img{aspect-ratio:16/9;}
  .stats{grid-template-columns:repeat(2,1fr);}
  .stat{border-bottom:1px solid var(--line);padding:26px 20px 20px 0;}
  .stat:nth-child(2n){border-right:none;}
  .split{grid-template-columns:1fr;gap:40px;}
  .split-media::after{display:none;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px;}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:28px;}
}

@media (max-width:767px){
  .footer-grid{grid-template-columns:1fr;}
  .section-head{flex-direction:column;align-items:flex-start;gap:18px;}
}

@media (max-width:639px){
  :root{--sec:64px;}
  .grid-container{padding-left:20px;padding-right:20px;}
  .topbar-inner{height:auto;padding:10px 0;flex-direction:column;align-items:flex-start;gap:6px;font-size:12px;}
  .header-inner{height:64px;}
  .site-header.is-scrolled .header-inner{height:58px;}
  .brand{font-size:19px;}
  .page-hero{padding:44px 0 52px;}
  .page-hero .lead{font-size:16px;}
  .hero-cta{gap:16px;}
  .hero-cta .btn{width:100%;justify-content:center;}
  .hero-meta{gap:18px;}
  .stats{grid-template-columns:1fr;}
  .stat{border-right:none;}
  .tl-item{padding-left:34px;}
  .timeline::before{left:5px;}
  .tl-dot{left:0;}
  .faq-q{font-size:16px;padding:22px 0;}
  .faq-a-inner{padding-right:0;}
  .cta-band{padding:56px 0;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:16px;}
}

@media (min-width:1440px){
  :root{--sec:132px;}
}

/* roulang page: category2 */
:root{
  --ink:#16211D;
  --ink-2:#2A3A33;
  --accent:#C0562F;
  --accent-2:#4C6B5C;
  --paper:#FBFAF7;
  --sand:#EFE9DE;
  --card:#FFFFFF;
  --line:rgba(22,33,29,.12);
  --line-strong:rgba(22,33,29,.24);
  --text:#1B1B1A;
  --muted:#5A5A55;
  --faint:#8B8B84;
  --font-display:"Noto Serif SC","Source Han Serif SC",Georgia,"Songti SC",serif;
  --font-body:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --radius-card:6px;
  --radius-btn:2px;
  --radius-img:4px;
  --shadow-hover:0 12px 32px rgba(22,33,29,.06);
  --section-y:120px;
  --ease:240ms ease-out;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.85;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color var(--ease)}
a:hover{color:var(--accent)}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
h1,h2,h3,h4{font-family:var(--font-display);font-weight:600;letter-spacing:.02em;color:var(--ink)}
p{color:var(--muted)}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

/* 布局容器 */
.grid-container{max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px;width:100%}
.section{padding:var(--section-y) 0}
.section--sand{background:var(--sand)}
.section--tight{padding-top:88px;padding-bottom:88px}
.section-head{max-width:760px;margin-bottom:48px}
.section-head .eyebrow{
  display:inline-block;font-size:13px;letter-spacing:.16em;color:var(--accent-2);
  text-transform:uppercase;margin-bottom:14px;
}
.section-head h2{font-size:clamp(26px,3vw,40px);line-height:1.25;margin-bottom:16px}
.section-head p{font-size:16px;line-height:1.8;color:var(--muted)}

/* 顶栏 */
.topbar{background:var(--ink);color:rgba(251,250,247,.72);font-size:13px;letter-spacing:.02em}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;height:34px;gap:16px}
.topbar a{color:rgba(251,250,247,.92)}
.topbar a:hover{color:#fff}

/* 导航 */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(251,250,247,.94);
  border-bottom:1px solid var(--line);
  transition:background var(--ease),box-shadow var(--ease);
}
.site-header.is-scrolled{backdrop-filter:blur(8px);box-shadow:0 1px 0 rgba(22,33,29,.06)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:76px;transition:height var(--ease)}
.site-header.is-scrolled .nav-inner{height:62px}
.brand{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-display);font-size:21px;font-weight:600;
  color:var(--ink);letter-spacing:.02em;
}
.brand .dot{width:6px;height:6px;border-radius:50%;background:var(--accent);display:inline-block;flex:0 0 6px}
.nav-links{display:flex;align-items:center;gap:34px}
.nav-links > a{
  position:relative;font-size:15px;color:var(--muted);padding:6px 0;
  transition:color var(--ease);
}
.nav-links > a::after{
  content:"";position:absolute;left:0;bottom:0;width:100%;height:1px;
  background:var(--accent);transform:scaleX(0);transform-origin:left;
  transition:transform var(--ease);
}
.nav-links > a:hover{color:var(--ink)}
.nav-links > a:hover::after{transform:scaleX(1)}
.nav-links > a.active{color:var(--ink);font-weight:500}
.nav-links > a.active::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:18px}
.nav-toggle{
  display:none;width:40px;height:40px;border:1px solid var(--line);border-radius:var(--radius-btn);
  background:transparent;align-items:center;justify-content:center;flex-direction:column;gap:5px;
  padding:0;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:1.5px;background:var(--ink)}
.drawer-close{
  display:none;position:fixed;right:24px;bottom:32px;width:52px;height:52px;
  border-radius:50%;border:1px solid var(--line);background:var(--card);
  color:var(--ink);align-items:center;justify-content:center;font-size:18px;
  z-index:90;cursor:pointer;
}

/* 按钮 */
.btn-primary{
  display:inline-flex;align-items:center;gap:10px;
  background:var(--ink);color:var(--paper);border:1px solid var(--ink);
  border-radius:var(--radius-btn);padding:14px 28px;font-size:15px;letter-spacing:.02em;
  cursor:pointer;transition:background var(--ease),transform var(--ease),border-color var(--ease);
}
.btn-primary:hover{background:var(--accent);border-color:var(--accent);color:#fff;transform:translateY(-2px)}
.btn-outline{
  display:inline-flex;align-items:center;
  border:1px solid var(--line-strong);border-radius:var(--radius-btn);
  padding:10px 20px;font-size:14px;color:var(--ink);background:transparent;
  transition:background var(--ease),color var(--ease),border-color var(--ease);
}
.btn-outline:hover{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.link-arrow{
  display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--ink);
  letter-spacing:.02em;
}
.link-arrow i{transition:transform var(--ease)}
.link-arrow:hover{color:var(--accent)}
.link-arrow:hover i{transform:translateX(4px)}
.link-underline{position:relative;display:inline-block}
.link-underline::after{
  content:"";position:absolute;left:0;bottom:-2px;width:100%;height:1px;
  background:var(--accent);transform:scaleX(0);transform-origin:left;
  transition:transform var(--ease);
}
.link-underline:hover::after{transform:scaleX(1)}

/* 标签、徽章 */
.tag{
  display:inline-block;font-size:13px;letter-spacing:.06em;color:var(--accent-2);
  border:1px solid rgba(76,107,92,.4);border-radius:999px;padding:4px 14px;
  line-height:1.6;
}
.tag--faint{color:var(--faint);border-color:var(--line)}

/* 面包屑 */
.breadcrumb{font-size:13px;color:var(--faint);letter-spacing:.02em;display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.breadcrumb a{color:var(--faint)}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb .sep{color:var(--line-strong)}

/* 页面 Hero */
.page-hero{
  background:var(--sand);border-bottom:1px solid var(--line);
  padding:72px 0 64px;position:relative;overflow:hidden;
}
.page-hero::after{
  content:"";position:absolute;right:-90px;top:-90px;width:280px;height:280px;
  background:rgba(192,86,47,.06);border-radius:50%;
}
.page-hero .hero-inner{position:relative;z-index:1;max-width:820px}
.page-hero h1{
  font-size:clamp(30px,4.4vw,54px);line-height:1.16;margin:20px 0 18px;
}
.page-hero .hero-sub{font-size:17px;line-height:1.85;color:var(--muted);max-width:640px}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:26px;margin-top:34px}
.hero-meta{
  display:flex;flex-wrap:wrap;gap:32px;margin-top:44px;padding-top:24px;
  border-top:1px solid var(--line);font-size:13px;color:var(--faint);letter-spacing:.04em;
}
.hero-meta span::before{
  content:"";display:inline-block;width:6px;height:6px;border-radius:50%;
  background:var(--accent);margin-right:10px;vertical-align:middle;
}

/* 数据条 */
.stat-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:32px}
.stat-item{border-top:1px solid var(--line);padding-top:22px}
.stat-num{
  font-family:var(--font-display);font-size:clamp(34px,4vw,52px);line-height:1;
  color:var(--accent);letter-spacing:.02em;
}
.stat-label{font-size:13px;color:var(--muted);margin-top:12px;letter-spacing:.02em}

/* 两栏骨架 */
.split-main{padding-right:0}
.split-side{margin-top:0}
@media(min-width:1024px){
  .split-main{padding-right:32px}
  .split-side{padding-left:32px}
}

/* 卡片网格 */
.card-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:28px;transition:border-color var(--ease),box-shadow var(--ease),transform var(--ease);
  scroll-margin-top:120px;
}
.card:hover{border-color:var(--accent);box-shadow:var(--shadow-hover)}
.card-icon{
  width:44px;height:44px;border:1px solid var(--line);border-radius:var(--radius-card);
  display:flex;align-items:center;justify-content:center;color:var(--accent);
  font-size:17px;margin-bottom:20px;background:var(--paper);
}
.card h3{font-size:21px;line-height:1.4;margin-bottom:12px}
.card p{font-size:15px;line-height:1.78;color:var(--muted);margin-bottom:20px}
.card .card-index{
  font-size:13px;letter-spacing:.18em;color:var(--faint);display:block;margin-bottom:16px;
}

/* 侧栏目录 */
.side-sticky{position:sticky;top:104px}
.toc-card,.info-table{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);padding:24px;
}
.info-table{margin-top:24px}
.panel-title{
  font-size:13px;letter-spacing:.16em;color:var(--faint);font-weight:500;
  font-family:var(--font-body);margin-bottom:14px;
}
.toc-list a{
  display:block;padding:10px 0 10px 14px;border-left:2px solid transparent;
  font-size:15px;color:var(--muted);transition:color var(--ease),border-color var(--ease);
}
.toc-list a:hover{color:var(--ink)}
.toc-list a.is-active{border-left-color:var(--accent);color:var(--ink);font-weight:500}
.toc-fold{display:none;background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);padding:6px 24px}
.toc-fold summary{
  list-style:none;cursor:pointer;font-size:15px;color:var(--ink);
  padding:18px 0;display:flex;align-items:center;justify-content:space-between;
}
.toc-fold summary::-webkit-details-marker{display:none}
.toc-fold summary::after{content:"+";color:var(--accent);font-size:18px;line-height:1}
.toc-fold[open] summary::after{content:"−"}
.toc-fold .toc-list{border-top:1px solid var(--line);padding:10px 0}
.info-row{
  display:flex;justify-content:space-between;gap:18px;
  padding:12px 0;border-bottom:1px solid var(--line);font-size:14px;
}
.info-row:last-child{border-bottom:0}
.info-row dt{color:var(--faint);white-space:nowrap;font-size:14px}
.info-row dd{margin:0;color:var(--ink);text-align:right;font-size:14px}

/* 图文区块 */
.figure-block{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.media-frame{overflow:hidden;border-radius:var(--radius-img);position:relative;position:relative}
.media-frame img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  transition:transform 600ms ease;
}
.media-frame:hover img{transform:scale(1.03)}
.media-frame::before{
  content:"";position:absolute;left:-16px;top:-16px;width:56%;height:56%;
  background:var(--sand);z-index:-1;border-radius:var(--radius-img);
}
.figure-text h2{font-size:clamp(24px,2.6vw,34px);line-height:1.3;margin-bottom:18px}
.figure-text p{font-size:16px;line-height:1.85;margin-bottom:18px}
.point-list{margin-top:26px}
.point-list li{
  position:relative;padding:12px 0 12px 24px;border-bottom:1px solid var(--line);
  font-size:15px;color:var(--muted);
}
.point-list li::before{
  content:"";position:absolute;left:0;top:23px;width:10px;height:1px;background:var(--accent);
}

/* 三步检查 */
.step-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:40px}
.step-item{border-top:1px solid var(--line);padding-top:24px}
.step-num{
  font-family:var(--font-display);font-size:13px;letter-spacing:.16em;
  color:var(--accent);display:block;margin-bottom:14px;
}
.step-item h3{font-size:19px;margin-bottom:12px}
.step-item p{font-size:15px;line-height:1.78}

/* FAQ */
.faq{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:24px;
  background:transparent;border:0;padding:24px 0;text-align:left;cursor:pointer;
  font-size:17px;color:var(--ink);font-family:inherit;line-height:1.6;
  transition:color var(--ease);
}
.faq-q:hover{color:var(--accent)}
.faq-icon{position:relative;width:16px;height:16px;flex:0 0 16px}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--ink);transition:transform var(--ease),background var(--ease);
}
.faq-icon::before{left:0;top:7.5px;width:16px;height:1.5px}
.faq-icon::after{left:7.5px;top:0;width:1.5px;height:16px}
.faq-item.is-open .faq-q{color:var(--accent)}
.faq-item.is-open .faq-icon::before{background:var(--accent)}
.faq-item.is-open .faq-icon::after{transform:scaleY(0);background:var(--accent)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 340ms ease}
.faq-a-inner{padding:0 0 26px;max-width:820px;font-size:15.5px;line-height:1.85;color:var(--muted)}

/* CTA 带 */
.cta-band{background:var(--ink);color:var(--paper);padding:72px 0}
.cta-band .cta-inner{display:flex;align-items:center;justify-content:space-between;gap:48px;flex-wrap:wrap}
.cta-band h2{
  color:#F6F3EC;font-size:clamp(24px,2.8vw,36px);line-height:1.3;margin-bottom:14px;
}
.cta-band p{color:rgba(251,250,247,.7);font-size:15.5px;max-width:560px}
.cta-band .btn-primary{background:var(--paper);color:var(--ink);border-color:var(--paper)}
.cta-band .btn-primary:hover{background:var(--accent);color:#fff;border-color:var(--accent)}
.cta-band .link-arrow{color:rgba(251,250,247,.85)}
.cta-band .link-arrow:hover{color:var(--accent)}

/* 页脚 */
.site-footer{background:var(--paper);border-top:1px solid var(--line);padding:72px 0 32px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}
.footer-brand p{font-size:14px;line-height:1.8;color:var(--muted);margin-top:16px;max-width:300px}
.footer-col h4{
  font-family:var(--font-body);font-size:13px;letter-spacing:.14em;
  color:var(--faint);font-weight:500;margin-bottom:16px;
}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:14px;color:var(--muted)}
.footer-col a:hover{color:var(--accent)}
.footer-col p{font-size:14px;line-height:1.8;color:var(--muted)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  border-top:1px solid var(--line);margin-top:56px;padding-top:24px;
  font-size:13px;color:var(--faint);
}
.footer-social{display:flex;align-items:center;gap:18px}
.footer-social a{
  width:34px;height:34px;border:1px solid var(--line);border-radius:50%;
  display:flex;align-items:center;justify-content:center;font-size:14px;
  color:var(--faint);transition:color var(--ease),border-color var(--ease);
}
.footer-social a:hover{color:var(--accent);border-color:var(--accent)}

/* 进场动画 */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 500ms ease-out,transform 500ms ease-out}
.reveal.is-visible{opacity:1;transform:none}

/* 响应式 */
@media(max-width:1023px){
  :root{--section-y:88px}
  .nav-toggle{display:flex}
  .nav-cta{display:none}
  .nav-links{
    position:fixed;inset:0;background:var(--paper);z-index:80;
    flex-direction:column;align-items:flex-start;justify-content:center;gap:0;
    padding:96px 32px;opacity:0;visibility:hidden;transform:translateY(-8px);
    transition:opacity var(--ease),transform var(--ease),visibility var(--ease);
  }
  body.menu-open .nav-links{opacity:1;visibility:visible;transform:none}
  .nav-links > a{
    width:100%;font-family:var(--font-display);font-size:26px;color:var(--ink);
    padding:20px 0;border-bottom:1px solid var(--line);
  }
  .nav-links > a::after{display:none}
  .nav-links > a.active{color:var(--accent)}
  .nav-links > a.active::before{
    content:"";display:inline-block;width:6px;height:6px;border-radius:50%;
    background:var(--accent);margin-right:12px;vertical-align:middle;
  }
  .drawer-close{display:flex}
  .figure-block{grid-template-columns:1fr;gap:36px}
  .side-sticky{position:static;margin-top:44px}
  .toc-card{display:none}
  .toc-fold{display:block}
  .footer-grid{grid-template-columns:1fr 1fr}
  .stat-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px}
  .step-grid{grid-template-columns:1fr;gap:28px}
}
@media(max-width:767px){
  .card-grid{grid-template-columns:1fr}
  .topbar-inner span:first-child{display:none}
}
@media(max-width:639px){
  :root{--section-y:64px}
  .grid-container{padding-left:20px;padding-right:20px}
  body{font-size:16px}
  .page-hero{padding:54px 0 48px}
  .hero-meta{gap:16px 24px}
  .card{padding:20px}
  .cta-band{padding:56px 0}
  .footer-grid{grid-template-columns:1fr}
  .stat-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media(min-width:1440px){
  .grid-container{max-width:1200px}
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  *{transition-duration:.01ms !important}
}