/* roulang page: index */
:root{
  --paper:#F6F5F1;
  --paper-2:#FFFFFF;
  --paper-3:#F1F0EA;
  --deep:#0C1417;
  --deep-2:#142024;
  --ink:#12181B;
  --ink-soft:#5A666B;
  --line:#E3E1DA;
  --primary:#0F7A6C;
  --primary-deep:#0A5A50;
  --accent:#C8F45C;
  --secondary:#E8A33D;
  --danger:#C1443B;
  --ok:#0F7A6C;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --mono:ui-monospace,'SFMono-Regular',Menlo,Consolas,monospace;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:84px}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:'Noto Sans SC','PingFang SC','Hiragino Sans GB','Microsoft YaHei',system-ui,sans-serif;
  font-size:16px;line-height:1.78;letter-spacing:.01em;
}
img{max-width:100%;display:block;border-style:solid}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0;padding:0}
ul,ol{list-style:none}
.mono{font-family:var(--mono);font-weight:500}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}
.skip-link{
  position:absolute;left:16px;top:-60px;z-index:200;background:var(--deep);color:#fff;
  padding:10px 18px;border-radius:var(--r-btn);font-size:14px;transition:top .18s var(--ease);
}
.skip-link:focus{top:14px}

/* ---------- Shell ---------- */
.shell{margin-left:0;padding-top:56px}
@media(min-width:1024px){.shell{margin-left:72px;padding-top:0}}
@media(min-width:1280px){.shell{margin-left:248px}}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media(min-width:768px){.wrap{padding:0 32px}}
@media(min-width:1280px){.wrap{padding:0 48px}}

/* ---------- Sidebar ---------- */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:280px;z-index:60;
  background:var(--deep);border-right:1px solid rgba(255,255,255,.08);
  display:flex;flex-direction:column;padding:24px 18px;overflow-y:auto;
  transform:translateX(-100%);transition:transform .22s var(--ease);
}
.sidebar.is-open{transform:translateX(0)}
@media(min-width:1024px){
  .sidebar{width:72px;transform:none;padding:20px 12px;align-items:center}
}
@media(min-width:1280px){
  .sidebar{width:248px;padding:24px 18px;align-items:stretch}
}
.brand{display:flex;align-items:center;gap:12px;padding:4px 6px 22px;border-bottom:1px solid rgba(255,255,255,.08)}
.brand-mark{flex:0 0 auto;width:36px;height:36px;display:block}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-name{color:#fff;font-size:17px;font-weight:800;letter-spacing:.02em}
.brand-sub{color:var(--accent);font-size:11px;letter-spacing:.14em;font-family:var(--mono);text-transform:uppercase}
@media(min-width:1024px) and (max-width:1279px){
  .brand-text{display:none}
  .brand{justify-content:center;padding-left:0;padding-right:0}
}
.nav{display:flex;flex-direction:column;gap:4px;margin-top:22px}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;height:48px;padding:0 12px;
  border-radius:var(--r-btn);color:rgba(255,255,255,.72);font-size:15px;
  transition:background .18s var(--ease),color .18s var(--ease);
}
.nav-item i{width:18px;text-align:center;font-size:15px;flex:0 0 18px}
.nav-item:hover{background:var(--deep-2);color:#fff}
.nav-item.is-active{background:var(--deep-2);color:#fff}
.nav-item.is-active i{color:var(--accent)}
.nav-item.is-active::before{
  content:"";position:absolute;left:-18px;top:9px;bottom:9px;width:3px;
  background:var(--accent);border-radius:0 3px 3px 0;
}
@media(min-width:1024px){
  .nav-item{height:40px}
}
@media(min-width:1024px) and (max-width:1279px){
  .nav-item{justify-content:center;padding:0;gap:0}
  .nav-text{display:none}
}
.side-card{
  margin-top:auto;background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.16);
  border-radius:var(--r-card);padding:16px;color:rgba(255,255,255,.78);font-size:13px;line-height:1.6;
}
.side-card strong{color:#fff;font-weight:600;display:block;margin-bottom:6px;font-size:14px}
.side-btn{
  display:inline-flex;align-items:center;justify-content:center;width:100%;height:38px;margin-top:12px;
  border:1.5px solid rgba(255,255,255,.55);border-radius:var(--r-btn);color:#fff;font-size:13px;
  transition:background .18s var(--ease),border-color .18s var(--ease);
}
.side-btn:hover{background:rgba(255,255,255,.12);border-color:#fff}
.side-copy{margin-top:14px;font-size:12px;color:rgba(255,255,255,.42);line-height:1.6}
@media(min-width:1024px) and (max-width:1279px){
  .side-card,.side-copy{display:none}
}

/* ---------- Topbar (mobile) ---------- */
.topbar{
  position:fixed;top:0;left:0;right:0;height:56px;z-index:50;background:var(--deep);
  display:flex;align-items:center;justify-content:space-between;padding:0 16px;
  border-bottom:1px solid rgba(255,255,255,.08);
}
.topbar .brand{padding:0;border:0}
.burger{
  width:42px;height:38px;display:inline-flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.18);border-radius:var(--r-btn);
  color:#fff;font-size:16px;cursor:pointer;transition:background .18s var(--ease);
}
.burger:hover{background:rgba(255,255,255,.14)}
@media(min-width:1024px){.topbar{display:none}}
.scrim{
  position:fixed;inset:0;z-index:55;background:rgba(12,20,23,.55);
  opacity:0;visibility:hidden;transition:opacity .2s var(--ease),visibility .2s var(--ease);
}
.scrim.is-open{opacity:1;visibility:visible}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);font-size:15px;font-weight:600;
  border:1.5px solid transparent;cursor:pointer;
  transition:transform .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease);
}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-deep);transform:translateY(-1px)}
.btn-ghost{border-color:var(--primary);color:var(--primary);background:transparent}
.btn-ghost:hover{background:rgba(15,122,108,.1)}
.btn-light{border-color:rgba(255,255,255,.55);color:#fff;background:transparent}
.btn-light:hover{background:rgba(255,255,255,.14);transform:translateY(-1px)}
.btn-accent{background:var(--accent);color:var(--ink)}
.btn-accent:hover{filter:brightness(.95);transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}

/* ---------- Hero ---------- */
.hero{position:relative;background:var(--deep);color:#fff;overflow:hidden}
.hero-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.webp');background-size:cover;background-position:center;}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(12,20,23,.93) 0%,rgba(12,20,23,.78) 52%,rgba(12,20,23,.6) 100%);
}
.hero-inner{position:relative;z-index:2;padding:56px 0 64px}
@media(min-width:1024px){.hero-inner{padding:104px 0 92px}}
.hero-grid{display:grid;gap:44px}
@media(min-width:1024px){.hero-grid{grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:48px;align-items:center}}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-family:var(--mono);font-size:12px;
  letter-spacing:.16em;text-transform:uppercase;color:var(--accent);margin-bottom:20px;
}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--accent)}
h1.hero-title{
  font-size:clamp(31px,4.4vw,54px);font-weight:800;line-height:1.14;letter-spacing:-.02em;
  max-width:16em;
}
.hero-sub{margin-top:20px;font-size:17px;line-height:1.8;color:rgba(255,255,255,.8);max-width:32em}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-points{display:flex;flex-wrap:wrap;gap:0;margin-top:34px;border-top:1px solid rgba(255,255,255,.16);padding-top:20px}
.hero-points li{
  font-size:13px;color:rgba(255,255,255,.72);padding:0 18px;position:relative;
}
.hero-points li:first-child{padding-left:0}
.hero-points li+li{border-left:1px solid rgba(255,255,255,.22)}
.hero-card{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.28);
  border-radius:var(--r-img);padding:12px;
}
@media(min-width:1024px){.hero-card{margin-top:28px}}
.hero-card img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:8px}
.hero-card-cap{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  margin-top:12px;padding:0 4px 4px;font-size:12px;color:rgba(255,255,255,.7);
}
.hero-card-cap .mono{color:var(--accent);font-size:13px}
.hero-rule{position:relative;z-index:2;height:1px;background:linear-gradient(90deg,var(--accent) 0%,rgba(200,244,92,0) 42%);}

/* ---------- Sections ---------- */
.sec{padding:56px 0}
@media(min-width:768px){.sec{padding:72px 0}}
@media(min-width:1280px){.sec{padding:96px 0}}
.sec-alt{background:var(--paper-3)}
.sec-head{display:flex;flex-direction:column;gap:14px;margin-bottom:36px}
@media(min-width:1024px){
  .sec-head{flex-direction:row;align-items:flex-end;justify-content:space-between;gap:40px;margin-bottom:44px}
}
.sec-tag{
  display:inline-flex;align-items:center;font-family:var(--mono);font-size:12px;letter-spacing:.16em;
  text-transform:uppercase;color:var(--primary);margin-bottom:12px;
}
h2.sec-title{font-size:clamp(25px,3vw,35px);font-weight:700;line-height:1.22;letter-spacing:-.015em}
.sec-desc{font-size:15px;color:var(--ink-soft);max-width:34em;line-height:1.8}
h3{font-size:21px;font-weight:600;line-height:1.35}
.lead-text{font-size:16px;color:var(--ink-soft);line-height:1.8}

/* ---------- Cards ---------- */
.card{
  background:var(--paper-2);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px;transition:transform .18s var(--ease),border-color .18s var(--ease);
}
.card:hover{transform:translateY(-2px);border-color:var(--primary)}
.card-num{font-family:var(--mono);font-size:15px;color:var(--ink-soft);letter-spacing:.06em;transition:color .18s var(--ease)}
.card:hover .card-num{color:var(--primary)}
.card-title{font-size:19px;font-weight:600;margin-top:14px;line-height:1.4}
.card-text{margin-top:10px;font-size:15px;color:var(--ink-soft);line-height:1.8}
.link-arrow{
  display:inline-flex;align-items:center;gap:8px;margin-top:18px;color:var(--primary);
  font-size:14px;font-weight:600;transition:color .18s var(--ease);
}
.link-arrow i{transition:transform .18s var(--ease)}
.link-arrow:hover i{transform:translateX(4px)}
.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  background:var(--paper-3);color:var(--ink);font-size:12.5px;font-weight:500;
}
.badge-accent{background:var(--accent);color:var(--ink)}
.badge-soft{background:rgba(15,122,108,.1);color:var(--primary-deep)}

/* ---------- Services ---------- */
.svc-grid{display:grid;gap:20px}
@media(min-width:768px){.svc-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1280px){.svc-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(min-width:1280px){.svc-lead{grid-column:span 2}}
.svc-lead-inner{display:grid;gap:20px}
@media(min-width:768px){.svc-lead-inner{grid-template-columns:auto minmax(0,1fr);align-items:start}}
.svc-lead-num{
  font-family:var(--mono);font-size:44px;line-height:1;color:var(--paper-3);
  -webkit-text-stroke:0;font-weight:500;
}
@media(max-width:767px){.svc-lead-num{font-size:34px}}
.card:hover .svc-lead-num{color:var(--accent)}

/* ---------- Stats ---------- */
.stats{background:var(--deep);color:#fff;padding:56px 0}
@media(min-width:1024px){.stats{padding:72px 0}}
.stats-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:32px 20px}
@media(min-width:1024px){.stats-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:0}}
.stat{padding:0}
@media(min-width:1024px){
  .stat{padding:0 32px}
  .stat:first-child{padding-left:0}
  .stat+.stat{border-left:1px solid rgba(255,255,255,.16)}
}
.stat-num{font-family:var(--mono);font-weight:500;font-size:clamp(36px,4.4vw,58px);line-height:1;color:var(--accent)}
.stat-label{margin-top:14px;font-size:14px;color:rgba(255,255,255,.72)}
.stat-note{margin-top:6px;font-size:13px;color:rgba(255,255,255,.45)}

/* ---------- Cases ---------- */
.case-row{display:grid;gap:26px;align-items:center;padding:28px 0;border-bottom:1px solid var(--line)}
.case-row:last-child{border-bottom:0}
@media(min-width:1024px){.case-row{grid-template-columns:minmax(0,5fr) minmax(0,6fr);gap:48px;padding:36px 0}}
@media(min-width:1024px){
  .case-row.case-rev .case-media{order:2}
}
.case-media{border:1px solid var(--line);border-radius:var(--r-img);overflow:hidden;background:var(--paper-3)}
.case-media img{width:100%;aspect-ratio:4/3;object-fit:cover}
.case-body h3{margin-top:12px}
.case-body p{margin-top:12px;font-size:15px;color:var(--ink-soft);line-height:1.8}

/* ---------- Plans ---------- */
.plan-grid{display:grid;gap:36px}
@media(min-width:1024px){.plan-grid{grid-template-columns:minmax(0,4fr) minmax(0,8fr);gap:56px}}
.plan-sticky{position:sticky;top:96px}
.anchor-list{margin-top:24px;border-top:1px solid var(--line)}
.anchor-list a{
  display:block;padding:12px 0;border-bottom:1px solid var(--line);font-size:14.5px;color:var(--ink-soft);
  transition:color .18s var(--ease),padding-left .18s var(--ease);
}
.anchor-list a:hover{color:var(--primary);padding-left:6px}
.plan-item{padding:28px 0;border-bottom:1px solid var(--line)}
.plan-item:first-child{padding-top:0}
.plan-item:last-child{border-bottom:0}
.plan-head{display:flex;align-items:baseline;gap:14px}
.plan-num{font-family:var(--mono);font-size:14px;color:var(--secondary);font-weight:500}
.point-list{margin-top:16px;display:grid;gap:10px}
.point-list li{position:relative;padding-left:20px;font-size:15px;color:var(--ink-soft);line-height:1.75}
.point-list li::before{
  content:"";position:absolute;left:0;top:11px;width:6px;height:6px;background:var(--primary);border-radius:2px;
}

/* ---------- Posts ---------- */
.posts-grid{display:grid;gap:20px}
@media(min-width:768px){.posts-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1280px){.posts-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
.post-card{
  display:flex;flex-direction:column;background:var(--paper-2);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;
  transition:transform .18s var(--ease),border-color .18s var(--ease);
}
.post-card:hover{transform:translateY(-2px);border-color:var(--primary)}
.post-card:hover .post-title{color:var(--primary)}
.post-card:hover .post-arrow{transform:translateX(4px)}
.post-feature{grid-column:span 1}
@media(min-width:768px){.post-feature{grid-column:span 2}}
@media(min-width:1024px){
  .post-feature{flex-direction:row;align-items:stretch}
  .post-feature .post-thumb{flex:0 0 42%;aspect-ratio:auto;border:0;border-right:1px solid var(--line);border-radius:0}
  .post-feature .post-thumb img{height:100%;aspect-ratio:auto}
  .post-feature .post-body{padding:30px 32px}
}
.post-thumb{
  aspect-ratio:4/3;background:var(--paper-3);overflow:hidden;
  display:flex;align-items:center;justify-content:center;color:var(--primary);
}
.post-thumb img{width:100%;height:100%;object-fit:cover}
.post-thumb-placeholder{font-size:22px}
.post-body{padding:22px;display:flex;flex-direction:column;flex:1 1 auto}
.post-title{
  font-size:18px;font-weight:600;line-height:1.45;margin-top:12px;
  transition:color .18s var(--ease);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-excerpt{
  margin-top:10px;font-size:14.5px;color:var(--ink-soft);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-foot{
  margin-top:auto;padding-top:18px;display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--ink-soft);
}
.post-foot .mono{font-size:13px}
.post-arrow{color:var(--primary);transition:transform .18s var(--ease)}
.empty-state{
  grid-column:1 / -1;background:var(--paper-3);border-radius:var(--r-card);min-height:220px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;padding:40px 24px;text-align:center;
}
.empty-state i{font-size:26px;color:var(--primary)}
.empty-state p{font-size:15px;color:var(--ink-soft)}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:870px}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 6px;background:none;border:0;text-align:left;cursor:pointer;
  font-size:17px;font-weight:500;line-height:1.5;color:var(--ink);
  transition:background .18s var(--ease),color .18s var(--ease);
}
.faq-q:hover{background:var(--paper-3)}
.faq-item.is-open .faq-q{color:var(--primary)}
.faq-icon{
  flex:0 0 22px;width:22px;height:22px;display:inline-flex;align-items:center;justify-content:center;
  color:var(--primary);font-size:15px;transition:transform .18s var(--ease);
}
.faq-item.is-open .faq-icon{transform:rotate(90deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s var(--ease)}
.faq-a-inner{padding:0 6px 22px;font-size:15px;color:var(--ink-soft);line-height:1.85;max-width:46em}

/* ---------- CTA / form ---------- */
.cta{background:var(--deep);color:#fff;padding:64px 0}
@media(min-width:1024px){.cta{padding:88px 0}}
.cta-grid{display:grid;gap:32px}
@media(min-width:1024px){.cta-grid{grid-template-columns:minmax(0,6fr) minmax(0,6fr);gap:56px;align-items:start}}
.cta h2{font-size:clamp(25px,3vw,34px);font-weight:700;line-height:1.25;letter-spacing:-.015em}
.cta p{margin-top:16px;font-size:16px;color:rgba(255,255,255,.76);line-height:1.85;max-width:30em}
.cta-actions{margin-top:30px}
.form-card{background:#fff;border-radius:var(--r-card);padding:28px;color:var(--ink)}
@media(min-width:1024px){.form-card{padding:32px}}
.form-title{font-size:18px;font-weight:600;margin-bottom:6px}
.form-sub{font-size:13.5px;color:var(--ink-soft);margin-bottom:22px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;color:var(--ink-soft);margin-bottom:6px}
.input,.select,.textarea{
  width:100%;border:1px solid var(--line);border-radius:var(--r-btn);background:#fff;
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.input,.select{height:48px;padding:0 14px}
.textarea{min-height:112px;padding:12px 14px;resize:vertical;line-height:1.7}
.input::placeholder,.textarea::placeholder{color:#9AA3A6;font-size:15px}
.input:focus,.select:focus,.textarea:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 2px var(--accent);
}
.select{
  appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%235A666B' stroke-width='2.2' stroke-linecap='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 14px center;padding-right:40px;
}
.field.is-error .input,.field.is-error .select,.field.is-error .textarea{border-color:var(--danger)}
.err-msg{display:none;margin-top:6px;font-size:13px;color:var(--danger)}
.field.is-error .err-msg{display:block}
.check-row{display:flex;align-items:flex-start;gap:10px;font-size:13.5px;color:var(--ink-soft);line-height:1.7}
.check-row input{margin-top:4px;width:16px;height:16px;accent-color:var(--primary)}
.form-note{
  display:none;align-items:center;gap:8px;margin-bottom:18px;padding:11px 14px;border-radius:var(--r-btn);
  background:rgba(15,122,108,.1);border:1px solid rgba(15,122,108,.28);color:var(--primary-deep);font-size:13.5px;
}
.form-note.is-visible{display:flex}

/* ---------- Footer ---------- */
.site-footer{background:var(--deep);color:rgba(255,255,255,.72);padding:56px 0 28px;font-size:14px}
.footer-grid{display:grid;gap:32px}
@media(min-width:768px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr}}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer-brand .brand-name{font-size:16px}
.footer-brand .brand-sub{font-size:10.5px}
.footer-col p{line-height:1.8;max-width:26em}
.footer-col h4{color:#fff;font-size:14px;font-weight:600;margin-bottom:16px;letter-spacing:.02em}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{transition:color .18s var(--ease)}
.footer-links a:hover{color:var(--accent)}
.footer-contact li{margin-bottom:10px;line-height:1.7}
.footer-contact .mono{color:var(--accent);font-size:13px}
.footer-bottom{
  margin-top:36px;padding-top:20px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;flex-direction:column;gap:12px;font-size:12.5px;color:rgba(255,255,255,.5);
}
@media(min-width:768px){.footer-bottom{flex-direction:row;align-items:center;justify-content:space-between}}
.to-top{display:inline-flex;align-items:center;gap:6px;color:rgba(255,255,255,.72);transition:color .18s var(--ease)}
.to-top:hover{color:var(--accent)}
@media(max-width:767px){
  .footer-col{border-bottom:1px solid rgba(255,255,255,.12);padding-bottom:22px}
  .footer-col:last-child{border-bottom:0;padding-bottom:0}
}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *{transition:none !important;animation:none !important}
  .card:hover,.post-card:hover,.btn:hover{transform:none !important}
}

/* roulang page: category1 */
:root{
    --paper:#F6F5F1;
    --paper-2:#FFFFFF;
    --paper-3:#F1F0EA;
    --deep:#0C1417;
    --deep-2:#142024;
    --ink:#12181B;
    --ink-soft:#5A666B;
    --line:#E3E1DA;
    --primary:#0F7A6C;
    --primary-deep:#0A5A50;
    --accent:#C8F45C;
    --secondary:#E8A33D;
    --danger:#C1443B;
    --ok:#0F7A6C;
    --radius-card:14px;
    --radius-btn:10px;
    --radius-img:12px;
    --shadow-pop:0 12px 32px rgba(12,20,23,.10);
    --ease:cubic-bezier(.2,.7,.3,1);
    --mono:ui-monospace,'SFMono-Regular',Menlo,Consolas,monospace;
  }
  *,*::before,*::after{box-sizing:border-box}
  html{scroll-behavior:smooth}
  body{
    margin:0;
    font-family:'Noto Sans SC','PingFang SC','Hiragino Sans GB','Microsoft YaHei',system-ui,sans-serif;
    background:var(--paper);
    color:var(--ink);
    font-size:16px;
    line-height:1.78;
    letter-spacing:.01em;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block}
  a{color:inherit;text-decoration:none}
  button{font:inherit;cursor:pointer}
  h1,h2,h3,h4{margin:0}
  p{margin:0 0 1em}
  ul,ol{margin:0;padding:0}
  :focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
  .mono{font-family:var(--mono);font-weight:500;letter-spacing:.02em}
  .sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
  .skip{position:absolute;left:-9999px;top:0;z-index:200;background:var(--deep);color:#fff;padding:10px 18px;border-radius:0 0 var(--radius-btn) 0;font-size:14px}
  .skip:focus{left:0}

  .wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
  @media (min-width:768px){.wrap{padding:0 32px}}
  @media (min-width:1280px){.wrap{padding:0 48px}}

  /* ---------- 顶部栏（移动端） ---------- */
  .topbar{
    position:fixed;top:0;left:0;right:0;height:56px;z-index:90;
    display:flex;align-items:center;justify-content:space-between;
    padding:0 16px;background:var(--deep);border-bottom:1px solid rgba(255,255,255,.10);
  }
  .brand{display:flex;align-items:center;gap:10px}
  .brand-mark{display:inline-flex;flex:0 0 auto}
  .brand-text{display:flex;flex-direction:column;line-height:1.16}
  .brand-name{font-size:16px;font-weight:700;color:#fff;letter-spacing:.04em}
  .brand-sub{font-size:11px;color:var(--accent);letter-spacing:.08em}
  .burger{
    width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;
    background:transparent;border:1px solid rgba(255,255,255,.22);border-radius:var(--radius-btn);
    color:#fff;transition:border-color 180ms var(--ease),color 180ms var(--ease);
  }
  .burger:hover{border-color:var(--accent);color:var(--accent)}
  @media (min-width:1024px){.topbar{display:none}}

  /* ---------- 左侧导航 ---------- */
  .sidebar{
    position:fixed;top:0;left:0;bottom:0;width:248px;z-index:80;
    background:var(--deep);border-right:1px solid rgba(255,255,255,.08);
    padding:20px 14px;display:flex;flex-direction:column;gap:18px;
    overflow-y:auto;transform:translateX(-100%);
    transition:transform 200ms var(--ease);
  }
  .sidebar.is-open{transform:translateX(0)}
  @media (min-width:1024px){.sidebar{transform:translateX(0)}}
  .side-nav{display:flex;flex-direction:column;gap:4px}
  .nav-item{
    position:relative;display:flex;align-items:center;gap:12px;
    height:40px;padding:0 12px;border-radius:var(--radius-btn);
    color:rgba(255,255,255,.72);font-size:15px;
    transition:background 180ms var(--ease),color 180ms var(--ease);
  }
  .nav-item i{width:18px;font-size:15px;text-align:center;color:rgba(255,255,255,.55);transition:color 180ms var(--ease)}
  .nav-item:hover{background:var(--deep-2);color:#fff}
  .nav-item:hover i{color:#fff}
  .nav-item.is-active{background:var(--deep-2);color:#fff}
  .nav-item.is-active i{color:var(--accent)}
  .nav-item.is-active::before{
    content:"";position:absolute;left:-14px;top:8px;bottom:8px;width:3px;
    background:var(--accent);border-radius:0 3px 3px 0;
  }
  .side-cta{margin-top:auto;background:var(--deep-2);border:1px solid rgba(255,255,255,.12);border-radius:var(--radius-card);padding:16px}
  .side-cta p{margin:0 0 12px;font-size:13.5px;color:rgba(255,255,255,.72);line-height:1.6}
  .side-copy{margin:14px 0 0;font-size:12px;color:rgba(255,255,255,.42);line-height:1.6}
  @media (min-width:1024px) and (max-width:1279px){
    .sidebar{width:72px;padding:20px 10px;align-items:center}
    .nav-label,.brand-text,.side-cta,.side-copy,.sidebar .brand-name,.sidebar .brand-sub{display:none}
    .nav-item{justify-content:center;padding:0;width:44px}
    .nav-item.is-active::before{left:-10px}
    .side-nav{align-items:center;width:100%}
  }
  @media (min-width:1280px){.sidebar{width:248px}}

  .drawer-mask{
    position:fixed;inset:0;z-index:70;background:rgba(12,20,23,.55);
    opacity:0;pointer-events:none;transition:opacity 180ms var(--ease);
  }
  .drawer-mask.is-open{opacity:1;pointer-events:auto}
  @media (min-width:1024px){.drawer-mask{display:none}}

  /* ---------- 主内容 ---------- */
  .main{padding-top:56px;min-height:100vh}
  @media (min-width:1024px){.main{margin-left:72px;padding-top:0}}
  @media (min-width:1280px){.main{margin-left:248px}}

  section[id]{scroll-margin-top:76px}
  @media (min-width:1024px){section[id]{scroll-margin-top:24px}}

  /* ---------- 页头 ---------- */
  .page-head{
    position:relative;
    padding:40px 0 56px;
    border-bottom:1px solid var(--line);
    background-image:linear-gradient(180deg,rgba(246,245,241,.93),rgba(246,245,241,.97)),url('/assets/images/backpic/back-1.webp');
    background-size:cover;background-position:center;
  }
  .crumbs{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-soft);margin-bottom:28px}
  .crumbs a{color:var(--primary)}
  .crumbs a:hover{text-decoration:underline}
  .crumbs .sep{opacity:.4}
  .crumbs .current{color:var(--ink-soft)}
  .head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:40px;flex-wrap:wrap}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.12em;
    color:var(--primary);font-family:var(--mono);font-weight:500;margin:0 0 14px;text-transform:uppercase;
  }
  .eyebrow::before{content:"";width:22px;height:1px;background:var(--primary)}
  h1{font-size:clamp(32px,4.4vw,56px);font-weight:800;letter-spacing:-.02em;line-height:1.14;max-width:14em}
  .lead{margin:18px 0 0;font-size:17px;color:var(--ink-soft);max-width:46em}
  .head-actions{display:flex;gap:12px;flex-wrap:wrap}

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:48px;padding:0 24px;border-radius:var(--radius-btn);
    font-size:15px;font-weight:600;border:0;white-space:nowrap;
    transition:background 180ms var(--ease),color 180ms var(--ease),transform 180ms var(--ease),border-color 180ms var(--ease),box-shadow 180ms var(--ease);
  }
  .btn-primary{background:var(--primary);color:#fff}
  .btn-primary:hover{background:var(--primary-deep);transform:translateY(-1px)}
  .btn-primary:active{transform:translateY(0)}
  .btn-ghost{background:transparent;border:1.5px solid var(--primary);color:var(--primary)}
  .btn-ghost:hover{background:rgba(15,122,108,.10)}
  .btn-accent{background:var(--accent);color:var(--ink)}
  .btn-accent:hover{filter:brightness(.96);transform:translateY(-1px)}
  .btn-line-light{background:transparent;border:1.5px solid rgba(255,255,255,.55);color:#fff}
  .btn-line-light:hover{border-color:var(--accent);color:var(--accent)}
  .btn-sm{height:40px;padding:0 16px;font-size:14px;border-radius:var(--radius-btn)}
  .link-more{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-weight:600;font-size:15px}
  .link-more i{transition:transform 180ms var(--ease)}
  .link-more:hover i{transform:translateX(4px)}

  /* ---------- 板块通用 ---------- */
  .sec{padding:clamp(48px,6vw,84px) 0}
  .sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;margin-bottom:40px}
  .sec-head h2{font-size:clamp(26px,3vw,36px);font-weight:700;letter-spacing:-.015em;line-height:1.2}
  .sec-head p{margin:0;color:var(--ink-soft);font-size:15px;max-width:420px}
  @media (max-width:767px){.sec-head{flex-direction:column;align-items:flex-start;gap:14px}}

  /* ---------- 步骤流程 ---------- */
  .steps{list-style:none;display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
  .step{border-top:2px solid var(--line);padding-top:28px;transition:border-color 180ms var(--ease)}
  .step:hover{border-color:var(--primary)}
  .step-num{
    display:inline-flex;align-items:center;justify-content:center;
    width:52px;height:52px;border-radius:12px;background:var(--deep);color:var(--accent);
    font-size:19px;font-family:var(--mono);font-weight:500;margin-bottom:18px;
    transition:background 180ms var(--ease),color 180ms var(--ease);
  }
  .step:hover .step-num{background:var(--primary);color:#fff}
  .step h3{font-size:21px;font-weight:600;line-height:1.35;margin-bottom:10px}
  .step p{margin:0;font-size:15px;color:var(--ink-soft)}
  @media (max-width:767px){
    .steps{grid-template-columns:1fr;gap:0}
    .step{border-top:0;border-left:2px solid var(--line);padding:0 0 28px 24px;border-radius:0}
    .step:last-child{padding-bottom:0}
    .step-num{width:44px;height:44px;font-size:16px;margin-bottom:14px}
  }

  /* ---------- 信息卡 ---------- */
  .info-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
  .info-card{
    background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius-card);
    padding:28px;transition:transform 180ms var(--ease),border-color 180ms var(--ease);
  }
  .info-card:hover{transform:translateY(-2px);border-color:var(--primary)}
  .info-card:hover h3{color:var(--primary)}
  .info-card .num{font-family:var(--mono);font-size:13px;color:var(--secondary);letter-spacing:.08em}
  .info-card h3{font-size:19px;font-weight:600;margin:12px 0 10px;transition:color 180ms var(--ease)}
  .info-card p{margin:0;font-size:15px;color:var(--ink-soft)}
  @media (max-width:639px){.info-grid{grid-template-columns:1fr}}

  /* ---------- 图文区 ---------- */
  .feature{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center}
  .feature-media{
    width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius-img);
    border:1px solid var(--line);background:var(--paper-3);
  }
  .feature h2{font-size:clamp(24px,2.6vw,32px);font-weight:700;letter-spacing:-.015em;line-height:1.25;margin-bottom:16px}
  .points{list-style:none;display:flex;flex-direction:column;gap:12px;margin-top:16px}
  .points li{position:relative;padding-left:20px;font-size:15.5px;color:var(--ink-soft)}
  .points li::before{
    content:"";position:absolute;left:0;top:.62em;width:6px;height:6px;
    background:var(--primary);border-radius:2px;
  }
  @media (max-width:899px){.feature{grid-template-columns:1fr;gap:24px}}

  /* ---------- 正文 + 侧栏 ---------- */
  .content-grid{display:grid;grid-template-columns:minmax(0,2fr) minmax(0,1fr);gap:48px;align-items:start}
  @media (max-width:1023px){.content-grid{grid-template-columns:1fr;gap:40px}}

  .prose{max-width:760px}
  .prose h2{
    font-size:clamp(24px,2.6vw,30px);font-weight:700;letter-spacing:-.015em;line-height:1.3;
    padding-left:16px;border-left:3px solid var(--primary);margin:0 0 20px;
  }
  .prose h2 + p{margin-top:0}
  .prose h3{font-size:20px;font-weight:600;line-height:1.4;margin:32px 0 12px}
  .prose p{font-size:16.5px;line-height:1.85;margin:0 0 1.25em;color:var(--ink)}
  .prose p.muted{color:var(--ink-soft);font-size:15.5px}
  .prose .intro{
    border-left:3px solid var(--accent);padding-left:20px;font-size:19px;line-height:1.8;color:var(--ink);
  }
  .prose blockquote{
    margin:24px 0;background:var(--paper-3);border-left:3px solid var(--primary);
    border-radius:0 var(--radius-img) var(--radius-img) 0;padding:18px 22px;
    font-size:15.5px;color:var(--ink-soft);font-style:normal;
  }
  .prose .divider{height:1px;background:var(--line);margin:40px 0;border:0}

  /* ---------- 侧栏 ---------- */
  .side{display:flex;flex-direction:column;gap:20px}
  @media (min-width:1024px){.side{position:sticky;top:96px}}
  .side-card{
    background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius-card);
    padding:24px;transition:border-color 180ms var(--ease);
  }
  .side-card:hover{border-color:var(--primary)}
  .side-card h3{font-size:16px;font-weight:600;margin-bottom:14px}
  .side-links{display:flex;flex-direction:column}
  .side-links a{
    display:flex;align-items:center;justify-content:space-between;gap:10px;
    padding:11px 0;border-bottom:1px solid var(--line);font-size:15px;color:var(--ink-soft);
    transition:color 180ms var(--ease);
  }
  .side-links a:last-child{border-bottom:0}
  .side-links a i{font-size:12px;transition:transform 180ms var(--ease)}
  .side-links a:hover{color:var(--primary)}
  .side-links a:hover i{transform:translateX(4px)}
  .side-read{display:flex;flex-direction:column;gap:14px}
  .side-read a{display:block}
  .side-read .time{font-family:var(--mono);font-size:12.5px;color:var(--ink-soft)}
  .side-read .title{font-size:15px;color:var(--ink);line-height:1.55;margin-top:4px;transition:color 180ms var(--ease)}
  .side-read a:hover .title{color:var(--primary)}
  .side-card.dark{background:var(--deep);border-color:var(--deep-2);color:#fff}
  .side-card.dark h3{color:#fff}
  .side-card.dark p{color:rgba(255,255,255,.72);font-size:14.5px;margin:0 0 16px}

  /* ---------- FAQ ---------- */
  .faq-block{max-width:880px}
  .faq-item{border-bottom:1px solid var(--line)}
  .faq-item:first-child{border-top:1px solid var(--line)}
  .faq-item summary{
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:18px 10px;font-size:17px;font-weight:500;cursor:pointer;list-style:none;
    transition:background 180ms var(--ease),color 180ms var(--ease);
  }
  .faq-item summary::-webkit-details-marker{display:none}
  .faq-item summary:hover{background:var(--paper-3)}
  .faq-item[open] summary{color:var(--primary)}
  .faq-item summary i{font-size:14px;color:var(--ink-soft);transition:transform 180ms var(--ease),color 180ms var(--ease)}
  .faq-item[open] summary i{transform:rotate(45deg);color:var(--primary)}
  .faq-body{padding:0 10px 20px;font-size:15px;line-height:1.85;color:var(--ink-soft)}

  /* ---------- CTA ---------- */
  .cta{position:relative;background:var(--deep);color:#fff;overflow:hidden}
  .cta::after{
    content:"";position:absolute;right:-140px;top:-140px;width:380px;height:380px;border-radius:50%;
    background:radial-gradient(circle,rgba(200,244,92,.08),transparent 70%);
  }
  .cta-inner{position:relative;z-index:1;display:grid;grid-template-columns:1.2fr .8fr;gap:48px;align-items:center;padding:clamp(48px,6vw,80px) 0}
  .cta h2{font-size:clamp(26px,3vw,36px);font-weight:700;letter-spacing:-.015em;line-height:1.24;margin-bottom:16px;color:#fff}
  .cta p{color:rgba(255,255,255,.74);font-size:16px;max-width:34em}
  .cta-actions{display:flex;gap:14px;flex-wrap:wrap;justify-content:flex-end}
  .cta-meta{margin-top:22px;display:flex;gap:20px;flex-wrap:wrap;font-size:13.5px;color:rgba(255,255,255,.6)}
  .cta-meta span{display:inline-flex;align-items:center;gap:8px}
  @media (max-width:899px){
    .cta-inner{grid-template-columns:1fr;gap:28px}
    .cta-actions{justify-content:flex-start}
  }

  /* ---------- 页脚 ---------- */
  .site-footer{background:var(--deep);color:rgba(255,255,255,.72);padding:64px 0 28px;font-size:14.5px}
  .footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px}
  .footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
  .footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:14px}
  .footer-col p{margin:0;font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);max-width:26em}
  .footer-links{display:flex;flex-direction:column;gap:10px}
  .footer-links a{font-size:14px;color:rgba(255,255,255,.72);transition:color 180ms var(--ease)}
  .footer-links a:hover{color:var(--accent)}
  .footer-contact{list-style:none;display:flex;flex-direction:column;gap:10px;font-size:14px;color:rgba(255,255,255,.72)}
  .footer-contact .mono{color:rgba(255,255,255,.88)}
  .footer-bottom{
    margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.14);
    display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
    font-size:13px;color:rgba(255,255,255,.55);
  }
  .to-top{display:inline-flex;align-items:center;gap:8px;color:rgba(255,255,255,.8);transition:color 180ms var(--ease)}
  .to-top:hover{color:var(--accent)}
  @media (max-width:1023px){.footer-grid{grid-template-columns:1fr 1fr}}
  @media (max-width:639px){
    .footer-grid{grid-template-columns:1fr;gap:0}
    .footer-col{padding:20px 0;border-top:1px solid rgba(255,255,255,.12)}
    .footer-col:first-child{border-top:0;padding-top:0}
  }

  @media (prefers-reduced-motion: reduce){
    *{transition-duration:.01ms !important;animation-duration:.01ms !important}
    html{scroll-behavior:auto}
  }

/* roulang page: article */
:root{
  --paper:#F6F5F1;
  --paper-2:#FFFFFF;
  --paper-3:#F1F0EA;
  --deep:#0C1417;
  --deep-2:#142024;
  --ink:#12181B;
  --ink-soft:#5A666B;
  --line:#E3E1DA;
  --primary:#0F7A6C;
  --primary-deep:#0A5A50;
  --accent:#C8F45C;
  --secondary:#E8A33D;
  --danger:#C1443B;
  --ok:#0F7A6C;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --sidebar:248px;
  --font:'Noto Sans SC','PingFang SC','Hiragino Sans GB','Microsoft YaHei',system-ui,sans-serif;
  --mono:ui-monospace,'SFMono-Regular',Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font);
  font-size:16.5px;
  line-height:1.8;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;color:var(--ink)}
p{margin:0}
ul,ol{margin:0}
.mono{font-family:var(--mono);font-weight:500;letter-spacing:0}
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:8px;
}
.skip{
  position:absolute;left:-9999px;top:0;z-index:200;
  background:var(--accent);color:var(--ink);padding:10px 16px;border-radius:0 0 10px 0;
  font-size:14px;font-weight:600;text-decoration:none;
}
.skip:focus{left:0}
.mono-tag{font-family:var(--mono);font-size:12px;letter-spacing:.12em;text-transform:uppercase}

/* ---------- 侧栏导航 ---------- */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar);
  background:var(--deep);
  border-right:1px solid rgba(227,225,218,.08);
  display:flex;flex-direction:column;
  padding:24px 16px;
  overflow-y:auto;
  z-index:90;
}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:#fff}
.brand-mark{flex:0 0 auto;display:inline-flex}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-size:17px;font-weight:700;color:#fff;letter-spacing:.02em}
.brand-sub{font-size:11px;letter-spacing:.1em;color:var(--accent);margin-top:2px}
.side-brand{padding:4px 8px 22px;border-bottom:1px solid rgba(255,255,255,.1);margin-bottom:18px}
.side-nav{display:flex;flex-direction:column;gap:4px}
.side-link{
  position:relative;display:flex;align-items:center;gap:12px;
  height:40px;padding:0 12px;border-radius:10px;
  color:rgba(255,255,255,.72);font-size:15px;text-decoration:none;
  transition:background 180ms var(--ease),color 180ms var(--ease);
}
.side-link i{width:18px;text-align:center;font-size:15px;color:rgba(255,255,255,.55);transition:color 180ms var(--ease)}
.side-link:hover{background:var(--deep-2);color:#fff}
.side-link:hover i{color:var(--accent)}
.side-link.is-active{background:var(--deep-2);color:#fff}
.side-link.is-active i{color:var(--accent)}
.side-link.is-active::before{
  content:"";position:absolute;left:-16px;top:8px;bottom:8px;width:3px;
  background:var(--accent);border-radius:0 3px 3px 0;
}
.side-foot{margin-top:auto;padding-top:24px}
.side-card{
  border:1px solid rgba(255,255,255,.14);border-radius:12px;padding:14px;
  background:rgba(255,255,255,.03);color:rgba(255,255,255,.72);
  font-size:13px;line-height:1.65;
}
.side-card p{margin:0 0 12px}
.side-copy{margin:12px 0 0;font-size:12px;color:rgba(255,255,255,.42);line-height:1.6}

/* ---------- 顶部栏（移动端） ---------- */
.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:56px;
  background:var(--deep);align-items:center;justify-content:space-between;
  padding:0 16px;z-index:70;border-bottom:1px solid rgba(255,255,255,.08);
}
.burger{
  width:40px;height:40px;border-radius:10px;border:1px solid rgba(255,255,255,.2);
  background:transparent;color:#fff;font-size:16px;cursor:pointer;
  display:inline-flex;align-items:center;justify-content:center;
  transition:background 180ms var(--ease),border-color 180ms var(--ease);
}
.burger:hover{background:var(--deep-2);border-color:rgba(255,255,255,.35)}
.overlay{
  position:fixed;inset:0;background:rgba(12,20,23,.55);
  opacity:0;pointer-events:none;transition:opacity 180ms var(--ease);z-index:80;
}
.overlay.show{opacity:1;pointer-events:auto}

/* ---------- 主区域 ---------- */
.main{margin-left:var(--sidebar);min-height:70vh}
.wrap{max-width:1200px;margin:0 auto;padding:0 24px}
.main > .wrap{padding-top:36px}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--ink-soft);margin-bottom:28px;
}
.breadcrumb a{color:var(--primary);text-decoration:none}
.breadcrumb a:hover{text-decoration:underline;text-underline-offset:3px}
.breadcrumb .sep{color:rgba(90,102,107,.4)}
.breadcrumb .current{color:var(--ink-soft);max-width:60ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- 文章头 ---------- */
.post-head{margin-bottom:28px}
.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:999px;font-size:12.5px;line-height:1;
  background:var(--paper-3);color:var(--ink);
}
.badge-line{background:transparent;border:1px solid var(--line);color:var(--ink-soft)}
.post-head .badge-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px}
.post-head h1{
  font-size:clamp(28px,3.6vw,42px);font-weight:800;line-height:1.28;
  letter-spacing:-.02em;max-width:22ch;
}
.post-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  margin-top:18px;font-size:14px;color:var(--ink-soft);
}
.post-meta .meta-item{display:inline-flex;align-items:center;gap:7px}
.post-meta .meta-item i{font-size:13px;color:var(--primary)}
.meta-divider{width:1px;height:14px;background:var(--line)}
.post-cover{margin:28px 0 0;border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line);background:var(--paper-3)}
.post-cover img{width:100%;aspect-ratio:16/9;object-fit:cover}

/* ---------- 阅读区布局 ---------- */
.post-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 300px;
  gap:48px;align-items:start;margin-top:44px;
}
.post-body{max-width:760px;min-width:0}
#post-overview,#post-content,#related,#post-nav{scroll-margin-top:72px}

/* ---------- 正文排版 ---------- */
.prose{font-size:17px;line-height:1.85;overflow-wrap:anywhere}
.prose > p:first-of-type{
  font-size:19px;line-height:1.8;color:var(--ink);
  border-left:3px solid var(--accent);padding-left:20px;
}
.prose p{margin:0 0 1.25em}
.prose h2{
  font-size:clamp(22px,2.4vw,28px);font-weight:700;line-height:1.32;
  letter-spacing:-.015em;margin:48px 0 16px;padding-left:16px;
  border-left:3px solid var(--primary);
}
.prose h3{font-size:20px;font-weight:600;line-height:1.4;margin:32px 0 12px}
.prose h4{font-size:17px;font-weight:600;margin:24px 0 10px}
.prose ul{list-style:none;padding:0;margin:0 0 1.25em}
.prose ul > li{position:relative;padding-left:22px;margin-bottom:.55em}
.prose ul > li::before{
  content:"";position:absolute;left:2px;top:.72em;width:6px;height:6px;background:var(--primary);
}
.prose ol{padding-left:1.5em;margin:0 0 1.25em}
.prose ol > li{margin-bottom:.55em;padding-left:4px}
.prose ol > li::marker{font-family:var(--mono);font-weight:500;color:var(--primary)}
.prose blockquote{
  margin:24px 0;background:var(--paper-3);border-left:3px solid var(--primary);
  border-radius:0 var(--r-img) var(--r-img) 0;padding:20px 24px;color:var(--ink-soft);font-style:normal;
}
.prose blockquote p:last-child{margin-bottom:0}
.prose a{color:var(--primary);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
.prose a:hover{text-decoration-thickness:2px}
.prose img{border-radius:var(--r-img);border:1px solid var(--line);margin:24px auto}
.prose figure{margin:24px 0}
.prose figcaption,.prose .caption{font-size:13px;color:var(--ink-soft);text-align:center;margin-top:10px}
.prose strong{font-weight:700}
.prose hr{border:0;border-top:1px solid var(--line);margin:40px 0}
.prose table{width:100%;border-collapse:collapse;font-size:15px;border:1px solid var(--line)}
.prose th{background:var(--paper-3);text-align:left;padding:12px 14px;border:1px solid var(--line);font-weight:600}
.prose td{padding:12px 14px;border:1px solid var(--line);color:var(--ink-soft)}
.table-scroll{overflow-x:auto;margin:24px 0;border-radius:var(--r-img)}

/* ---------- 空态 ---------- */
.empty-state{
  background:var(--paper-3);border-radius:var(--r-card);
  min-height:220px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:14px;padding:40px 24px;text-align:center;
}
.empty-state i{font-size:26px;color:var(--primary)}
.empty-state p{font-size:15px;color:var(--ink-soft)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;text-decoration:none;cursor:pointer;
  border:1.5px solid transparent;
  transition:transform 180ms var(--ease),background 180ms var(--ease),
             color 180ms var(--ease),border-color 180ms var(--ease),filter 180ms var(--ease);
}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-deep);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-accent{background:var(--accent);color:var(--ink)}
.btn-accent:hover{filter:brightness(.96);transform:translateY(-1px)}
.btn-outline{border-color:var(--primary);color:var(--primary);background:transparent}
.btn-outline:hover{background:rgba(15,122,108,.1)}
.btn-ghost-light{border-color:rgba(255,255,255,.42);color:#fff}
.btn-ghost-light:hover{background:rgba(255,255,255,.1)}
.btn-sm{height:38px;padding:0 14px;font-size:13.5px;border-radius:10px}
.text-link{
  display:inline-flex;align-items:center;gap:6px;color:var(--primary);
  font-size:14px;font-weight:600;text-decoration:none;
}
.text-link i{transition:transform 180ms var(--ease)}
.text-link:hover i{transform:translateX(4px)}

/* ---------- 文末模块 ---------- */
.post-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:48px;padding-top:28px;border-top:1px solid var(--line)}
.tag{
  display:inline-flex;align-items:center;height:28px;padding:0 12px;
  border-radius:999px;background:var(--paper-2);border:1px solid var(--line);
  font-size:13px;color:var(--ink-soft);text-decoration:none;
  transition:border-color 180ms var(--ease),color 180ms var(--ease);
}
.tag:hover{border-color:var(--primary);color:var(--primary)}
.post-note{
  margin-top:24px;background:var(--paper-3);border-radius:var(--r-img);
  padding:18px 22px;font-size:14px;line-height:1.75;color:var(--ink-soft);
}
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:28px}
.post-nav-item{
  display:flex;flex-direction:column;gap:6px;
  background:var(--paper-2);border:1px solid var(--line);border-radius:var(--r-img);
  padding:16px 20px;text-decoration:none;
  transition:transform 180ms var(--ease),border-color 180ms var(--ease);
}
.post-nav-item:hover{transform:translateY(-2px);border-color:var(--primary)}
.post-nav-label{font-size:12.5px;color:var(--ink-soft)}
.post-nav-item strong{font-size:16px;font-weight:600;color:var(--ink);line-height:1.5}
.post-nav-item:hover strong{color:var(--primary)}
.back-row{margin-top:20px}

/* ---------- 侧栏辅助区 ---------- */
.post-side{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px}
.side-block{
  background:var(--paper-2);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;
}
.side-title{font-size:15px;font-weight:700;margin:0 0 14px;letter-spacing:.01em}
.toc{display:flex;flex-direction:column;gap:2px}
.toc-link{
  position:relative;display:block;padding:8px 10px 8px 14px;border-radius:8px;
  font-size:14.5px;color:var(--ink-soft);text-decoration:none;
  transition:background 180ms var(--ease),color 180ms var(--ease);
}
.toc-link::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;
  border-radius:3px;background:var(--line);transition:background 180ms var(--ease);
}
.toc-link:hover{background:var(--paper-3);color:var(--ink)}
.toc-link:hover::before{background:var(--accent)}
.mini-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column}
.mini-list li + li{border-top:1px solid var(--line)}
.mini-list a{
  display:flex;align-items:center;gap:10px;padding:12px 0;text-decoration:none;color:var(--ink);
  transition:color 180ms var(--ease);
}
.mini-list a:hover{color:var(--primary)}
.mini-date{font-size:12px;color:var(--ink-soft);flex:0 0 auto}
.mini-title{
  font-size:14px;line-height:1.5;flex:1 1 auto;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.mini-list i{font-size:12px;color:var(--ink-soft);flex:0 0 auto;transition:transform 180ms var(--ease)}
.mini-list a:hover i{transform:translateX(4px);color:var(--primary)}
.side-cta{
  background:var(--deep);border-radius:var(--r-card);padding:24px;
  border:1px solid rgba(255,255,255,.1);
}
.side-cta p{font-size:14px;line-height:1.75;color:rgba(255,255,255,.72);margin:0 0 16px}

/* ---------- 相关推荐 ---------- */
.related{margin-top:72px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px}
.section-head h2{font-size:clamp(22px,2.4vw,30px);font-weight:700;letter-spacing:-.015em}
.section-head p{font-size:14px;color:var(--ink-soft);margin-top:6px}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{
  display:flex;flex-direction:column;overflow:hidden;text-decoration:none;color:inherit;
  background:var(--paper-2);border:1px solid var(--line);border-radius:var(--r-card);
  transition:transform 180ms var(--ease),border-color 180ms var(--ease);
}
.card:hover{transform:translateY(-2px);border-color:var(--primary)}
.card-cover{aspect-ratio:16/9;background:var(--paper-3);overflow:hidden}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform 260ms var(--ease)}
.card:hover .card-cover img{transform:scale(1.03)}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-cat{align-self:flex-start}
.card-title{
  font-size:17px;font-weight:600;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card:hover .card-title{color:var(--primary)}
.card-sum{
  font-size:14px;line-height:1.7;color:var(--ink-soft);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-foot{
  margin-top:auto;padding-top:6px;display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--ink-soft);
}
.card-foot .arrow{transition:transform 180ms var(--ease)}
.card:hover .card-foot .arrow{transform:translateX(4px);color:var(--primary)}

/* ---------- 底部行动区 ---------- */
.cta-band{background:var(--deep);margin-top:96px;padding:64px 0}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap}
.cta-text h2{color:#fff;font-size:clamp(22px,2.6vw,32px);font-weight:700;letter-spacing:-.015em;line-height:1.3}
.cta-text p{color:rgba(255,255,255,.72);font-size:15.5px;margin-top:12px;max-width:52ch;line-height:1.8}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{margin-left:var(--sidebar);background:var(--deep);color:rgba(255,255,255,.72);padding:72px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px}
.footer-col p{font-size:14px;line-height:1.85}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:rgba(255,255,255,.72);text-decoration:none;transition:color 180ms var(--ease)}
.footer-links a:hover{color:var(--accent)}
.footer-contact{list-style:none;padding:0;display:flex;flex-direction:column;gap:10px;font-size:14px}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin-top:48px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;color:rgba(255,255,255,.5);
}
.to-top{color:var(--accent);text-decoration:none;display:inline-flex;align-items:center;gap:6px}
.to-top:hover{text-decoration:underline;text-underline-offset:3px}

/* ---------- 响应式 ---------- */
@media (min-width:1280px){
  .wrap{padding:0 48px}
}
@media (max-width:1279px){
  :root{--sidebar:72px}
  .sidebar{padding:20px 10px;align-items:center}
  .brand-text,.side-link span,.side-card,.side-copy{display:none}
  .side-brand{padding:4px 0 18px;margin-bottom:14px;width:100%;display:flex;justify-content:center;border-bottom:1px solid rgba(255,255,255,.1)}
  .side-nav{width:100%;align-items:center}
  .side-link{justify-content:center;padding:0;width:44px}
  .side-link.is-active::before{left:-10px}
  .side-foot{width:100%}
}
@media (max-width:1023px){
  :root{--sidebar:0px}
  .sidebar{
    width:280px;padding:24px 16px;align-items:stretch;
    transform:translateX(-100%);transition:transform 220ms var(--ease);
  }
  .sidebar.open{transform:translateX(0)}
  .sidebar .brand-text{display:flex}
  .sidebar .side-link span{display:inline}
  .sidebar .side-card{display:block}
  .sidebar .side-copy{display:block}
  .sidebar .side-brand{padding:4px 8px 22px;margin-bottom:18px;justify-content:flex-start}
  .sidebar .side-nav{width:100%;align-items:stretch}
  .sidebar .side-link{justify-content:flex-start;padding:0 12px;width:100%;height:48px}
  .sidebar .side-link.is-active::before{left:-16px}
  .topbar{display:flex}
  .main{margin-left:0;padding-top:56px}
  .site-footer{margin-left:0}
  .post-layout{grid-template-columns:1fr;gap:36px;margin-top:36px}
  .post-side{position:static}
  .related-grid{grid-template-columns:repeat(2,1fr)}
  .cta-band{margin-top:72px;padding:52px 0}
}
@media (max-width:900px){
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:640px){
  body{font-size:16px}
  .wrap{padding:0 20px}
  .post-head h1{font-size:26px;max-width:none}
  .post-nav{grid-template-columns:1fr}
  .related-grid{grid-template-columns:1fr}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:24px}
  .footer-grid{grid-template-columns:1fr;gap:0}
  .footer-col{padding:20px 0;border-top:1px solid rgba(255,255,255,.1)}
  .footer-col:first-child{padding-top:0;border-top:0}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition:none !important;animation:none !important}
}

/* roulang page: category2 */
:root{
  --paper:#F6F5F1;
  --paper-2:#FFFFFF;
  --paper-3:#F1F0EA;
  --deep:#0C1417;
  --deep-2:#142024;
  --ink:#12181B;
  --ink-soft:#5A666B;
  --line:#E3E1DA;
  --primary:#0F7A6C;
  --primary-deep:#0A5A50;
  --accent:#C8F45C;
  --secondary:#E8A33D;
  --danger:#C1443B;
  --ok:#0F7A6C;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --shadow-pop:0 12px 32px rgba(12,20,23,.10);
  --tr:180ms cubic-bezier(.2,.7,.3,1);
  --sidebar:248px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:'Noto Sans SC','PingFang SC','Hiragino Sans GB','Microsoft YaHei',system-ui,sans-serif;
  font-size:16px;
  line-height:1.8;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img);}
a{color:var(--primary);text-decoration:none;}
a:hover{color:var(--primary-deep);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;letter-spacing:-.015em;color:var(--ink);}
h1{font-size:clamp(32px,4.4vw,56px);font-weight:800;line-height:1.14;letter-spacing:-.02em;}
h2{font-size:clamp(26px,3vw,36px);font-weight:700;line-height:1.2;}
h3{font-size:20px;font-weight:600;line-height:1.35;}
p{margin:0;}
.mono{font-family:ui-monospace,'SFMono-Regular',Menlo,monospace;font-weight:500;letter-spacing:0;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px;}

/* 跳转链接 */
.skip-link{
  position:absolute;left:16px;top:-60px;z-index:200;background:var(--deep);color:#fff;
  padding:10px 18px;border-radius:var(--r-btn);font-size:14px;transition:var(--tr);
}
.skip-link:focus{top:16px;color:#fff;}

/* ============ 顶栏（仅移动端） ============ */
.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:56px;z-index:80;
  background:var(--deep);align-items:center;justify-content:space-between;padding:0 16px;
}
.topbar .brand{display:flex;align-items:center;gap:10px;}
.burger{
  width:40px;height:40px;border-radius:10px;border:1px solid rgba(255,255,255,.18);
  background:transparent;color:#fff;font-size:17px;display:inline-flex;align-items:center;justify-content:center;
  transition:var(--tr);cursor:pointer;
}
.burger:hover{background:var(--deep-2);color:var(--accent);}

/* ============ 品牌 ============ */
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;}
.brand-mark{display:inline-flex;flex:0 0 auto;}
.brand-mark svg{display:block;}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-name{font-size:16px;font-weight:700;color:#fff;letter-spacing:.02em;}
.brand-sub{font-size:11px;color:var(--accent);letter-spacing:.12em;text-transform:uppercase;}

/* ============ 侧栏 ============ */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar);z-index:90;
  background:var(--deep);border-right:1px solid rgba(255,255,255,.08);
  display:flex;flex-direction:column;gap:18px;padding:20px 16px 18px;
  overflow-y:auto;
}
.side-nav{display:flex;flex-direction:column;gap:4px;}
.side-label{
  font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:rgba(255,255,255,.38);
  padding:0 12px;margin-bottom:6px;
}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;height:40px;padding:0 12px;
  border-radius:var(--r-btn);color:rgba(255,255,255,.72);font-size:15px;transition:var(--tr);
}
.nav-item i{width:18px;font-size:15px;text-align:center;color:rgba(255,255,255,.6);transition:var(--tr);}
.nav-item:hover{background:var(--deep-2);color:#fff;}
.nav-item:hover i{color:#fff;}
.nav-item.is-active{background:var(--deep-2);color:#fff;}
.nav-item.is-active i{color:var(--accent);}
.nav-item.is-active::before{
  content:"";position:absolute;left:0;top:8px;bottom:8px;width:3px;border-radius:3px;background:var(--accent);
}
.side-foot{margin-top:auto;display:flex;flex-direction:column;gap:12px;}
.side-card{
  border:1px solid rgba(255,255,255,.14);border-radius:var(--r-card);padding:14px;
  background:rgba(255,255,255,.03);
}
.side-card p{font-size:13px;line-height:1.7;color:rgba(255,255,255,.66);margin-bottom:10px;}
.side-copy{font-size:12px;color:rgba(255,255,255,.4);padding:0 4px;}

/* ============ 内容列 ============ */
.page{margin-left:var(--sidebar);}
.wrap{max-width:1200px;margin:0 auto;padding:0 24px;}
.main{padding-bottom:72px;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;transition:var(--tr);white-space:nowrap;
}
.btn i{font-size:13px;transition:var(--tr);}
.btn-primary{background:var(--primary);color:#fff;}
.btn-primary:hover{background:var(--primary-deep);color:#fff;transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;border:1.5px solid var(--primary);color:var(--primary);}
.btn-ghost:hover{background:rgba(15,122,108,.1);color:var(--primary-deep);}
.btn-accent{background:var(--accent);color:var(--ink);}
.btn-accent:hover{background:#BCE84F;color:var(--ink);transform:translateY(-1px);}
.btn-outline-light{background:transparent;border:1.5px solid rgba(255,255,255,.55);color:#fff;}
.btn-outline-light:hover{background:rgba(255,255,255,.12);color:#fff;}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.btn:hover i.fa-arrow-right{transform:translateX(4px);}

/* ============ 面包屑 ============ */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-soft);padding:28px 0 0;}
.crumb a{color:var(--primary);}
.crumb .sep{color:rgba(18,24,27,.35);}
.crumb .now{color:var(--ink-soft);}

/* ============ 页头 ============ */
.hero{
  position:relative;overflow:hidden;margin-top:24px;border-radius:16px;
  border:1px solid var(--line);background:var(--paper-2);
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;opacity:.10;
}
.hero-inner{position:relative;padding:48px 40px;display:grid;grid-template-columns:minmax(0,2fr) minmax(0,1fr);gap:40px;align-items:center;}
.hero .tag{
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;border-radius:999px;
  background:var(--paper-3);color:var(--ink);font-size:13px;font-weight:600;margin-bottom:18px;
}
.hero .tag i{color:var(--primary);}
.hero h1{margin-bottom:16px;}
.hero .lead{font-size:17px;color:var(--ink-soft);max-width:520px;margin-bottom:28px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;}
.hero-aside{
  background:var(--paper-2);border:1px solid var(--line);border-radius:var(--r-card);padding:24px;
  box-shadow:var(--shadow-pop);
}
.hero-aside h3{font-size:16px;margin-bottom:16px;}
.hero-aside ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:14px;}
.hero-aside li{display:flex;gap:12px;align-items:flex-start;font-size:14px;color:var(--ink-soft);line-height:1.7;}
.hero-aside .k{
  flex:0 0 auto;font-family:ui-monospace,'SFMono-Regular',Menlo,monospace;font-weight:500;
  font-size:12px;color:var(--secondary);border-top:1px solid var(--line);padding-top:2px;
}

/* ============ 主体布局 ============ */
.layout{display:grid;grid-template-columns:minmax(0,2fr) minmax(0,1fr);gap:48px;padding-top:64px;}
.section{padding-bottom:64px;}
.sec-head{margin-bottom:32px;max-width:720px;}
.sec-head h2{margin-bottom:12px;}
.sec-head p{font-size:16px;color:var(--ink-soft);}
.eyebrow{
  display:inline-block;font-family:ui-monospace,'SFMono-Regular',Menlo,monospace;font-weight:500;
  font-size:13px;color:var(--primary);letter-spacing:.08em;margin-bottom:10px;
}

/* 图文交替 */
.media-row{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;margin-bottom:48px;}
.media-row:last-child{margin-bottom:0;}
.media-row .pic{border:1px solid var(--line);border-radius:var(--r-img);overflow:hidden;background:var(--paper-3);}
.media-row .pic img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:0;}
.media-row.flip .pic{order:2;}
.media-row h2{margin-bottom:16px;}
.media-row p{color:var(--ink-soft);margin-bottom:18px;}
.checks{list-style:none;margin:0 0 20px;padding:0;display:flex;flex-direction:column;gap:12px;}
.checks li{position:relative;padding-left:22px;font-size:15px;color:var(--ink);line-height:1.75;}
.checks li::before{
  content:"";position:absolute;left:0;top:.62em;width:8px;height:8px;border-radius:2px;background:var(--primary);
}
.link-more{display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:600;color:var(--primary);}
.link-more i{transition:var(--tr);font-size:12px;}
.link-more:hover i{transform:translateX(4px);}

/* 时间线 */
.timeline{list-style:none;margin:0;padding:0;border-left:1px solid var(--line);}
.tl-item{position:relative;padding:0 0 32px 32px;}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{
  content:"";position:absolute;left:-6px;top:8px;width:11px;height:11px;border-radius:50%;
  background:var(--paper-2);border:2px solid var(--primary);
}
.tl-num{
  display:inline-block;font-family:ui-monospace,'SFMono-Regular',Menlo,monospace;font-weight:500;
  font-size:13px;color:var(--secondary);letter-spacing:.1em;margin-bottom:6px;
}
.tl-item h3{margin-bottom:8px;}
.tl-item p{font-size:15px;color:var(--ink-soft);}

/* 卡片网格 */
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}
.card{
  background:var(--paper-2);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px;transition:var(--tr);
}
.card:hover{transform:translateY(-2px);border-color:var(--primary);}
.card:hover h3{color:var(--primary);}
.card .num{
  display:block;font-family:ui-monospace,'SFMono-Regular',Menlo,monospace;font-weight:500;
  font-size:13px;color:var(--secondary);letter-spacing:.12em;margin-bottom:12px;
}
.card h3{margin-bottom:10px;transition:var(--tr);}
.card p{font-size:15px;color:var(--ink-soft);}
.tag{
  display:inline-block;margin-top:16px;padding:5px 12px;border-radius:999px;
  background:var(--paper-3);color:var(--ink);font-size:12px;font-weight:600;
}

/* 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:16px;
  padding:20px 8px;background:none;border:0;text-align:left;cursor:pointer;
  font-size:17px;font-weight:500;color:var(--ink);transition:var(--tr);
}
.faq-q:hover{background:var(--paper-3);color:var(--primary);}
.faq-item.is-open .faq-q{color:var(--primary);}
.faq-icon{position:relative;width:20px;height:20px;flex:0 0 auto;transition:transform 220ms cubic-bezier(.2,.7,.3,1);}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:currentColor;border-radius:2px;
}
.faq-icon::before{left:0;top:9px;width:20px;height:2px;}
.faq-icon::after{left:9px;top:0;width:2px;height:20px;}
.faq-item.is-open .faq-icon{transform:rotate(90deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height 260ms cubic-bezier(.2,.7,.3,1);}
.faq-a p{padding:0 8px 22px;font-size:15px;line-height:1.85;color:var(--ink-soft);max-width:760px;}

/* 侧栏卡片 */
.aside{display:flex;flex-direction:column;gap:20px;}
.aside-card{
  background:var(--paper-2);border:1px solid var(--line);border-radius:var(--r-card);padding:24px;
}
.aside-card h3{font-size:16px;margin-bottom:16px;}
.aside-links{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;}
.aside-links li{border-bottom:1px solid var(--line);}
.aside-links li:last-child{border-bottom:0;}
.aside-links a{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:12px 0;font-size:15px;color:var(--ink);transition:var(--tr);
}
.aside-links a:hover{color:var(--primary);}
.aside-links a i{font-size:12px;color:var(--primary);transition:var(--tr);}
.aside-links a:hover i{transform:translateX(4px);}
.mini-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;}
.mini-list li{border-bottom:1px solid var(--line);}
.mini-list li:last-child{border-bottom:0;}
.mini-list a{display:block;padding:12px 0;transition:var(--tr);}
.mini-list a:hover .mini-title{color:var(--primary);}
.mini-time{
  display:block;font-family:ui-monospace,'SFMono-Regular',Menlo,monospace;font-weight:500;
  font-size:12px;color:var(--ink-soft);margin-bottom:4px;
}
.mini-title{display:block;font-size:15px;line-height:1.6;color:var(--ink);transition:var(--tr);}
.aside-contact{background:var(--deep);border-color:var(--deep-2);}
.aside-contact h3{color:#fff;}
.aside-contact p{font-size:14px;color:rgba(255,255,255,.7);margin-bottom:18px;}

/* CTA */
.cta{
  margin-top:8px;background:var(--deep);border-radius:16px;padding:56px 48px;
  display:grid;grid-template-columns:minmax(0,3fr) minmax(0,2fr);gap:40px;align-items:center;
  position:relative;overflow:hidden;
}
.cta::after{
  content:"";position:absolute;right:-120px;top:-120px;width:360px;height:360px;border-radius:50%;
  background:radial-gradient(circle,rgba(200,244,92,.08),transparent 70%);
}
.cta h2{color:#fff;margin-bottom:14px;position:relative;}
.cta p{color:rgba(255,255,255,.72);font-size:16px;max-width:520px;position:relative;}
.cta-side{position:relative;display:flex;flex-direction:column;gap:16px;}
.cta-side .row{
  display:flex;justify-content:space-between;gap:16px;padding:14px 0;
  border-bottom:1px solid rgba(255,255,255,.14);font-size:14px;color:rgba(255,255,255,.72);
}
.cta-side .row:last-of-type{border-bottom:0;}
.cta-side .row span:last-child{color:var(--accent);font-family:ui-monospace,'SFMono-Regular',Menlo,monospace;font-weight:500;}

/* 页尾小条 */
.tail{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
  margin-top:56px;padding-top:24px;border-top:1px solid var(--line);font-size:14px;color:var(--ink-soft);
}
.tail a{font-weight:600;}

/* ============ 页脚 ============ */
.site-footer{background:var(--deep);color:rgba(255,255,255,.72);padding:64px 0 32px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:18px;}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:18px;letter-spacing:.02em;}
.footer-col p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);}
.footer-links{display:flex;flex-direction:column;gap:12px;}
.footer-links a{font-size:14px;color:rgba(255,255,255,.68);transition:var(--tr);}
.footer-links a:hover{color:var(--accent);}
.footer-contact{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:12px;font-size:14px;color:rgba(255,255,255,.68);}
.footer-contact .mono{color:var(--accent);}
.footer-bottom{
  margin-top:40px;padding-top:24px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:rgba(255,255,255,.55);
}
.to-top{display:inline-flex;align-items:center;gap:8px;color:rgba(255,255,255,.7);font-size:13px;}
.to-top:hover{color:var(--accent);}

/* 遮罩 */
.scrim{
  position:fixed;inset:0;background:rgba(12,20,23,.55);z-index:85;opacity:0;pointer-events:none;
  transition:opacity 180ms cubic-bezier(.2,.7,.3,1);
}
.scrim.is-show{opacity:1;pointer-events:auto;}

/* ============ 平板 ============ */
@media (max-width:1279px) and (min-width:1024px){
  :root{--sidebar:72px;}
  .sidebar{padding:20px 12px;align-items:center;}
  .brand-text,.nav-label,.side-label,.side-card p,.side-copy{display:none;}
  .nav-item{justify-content:center;padding:0;}
  .nav-item span{display:none;}
  .side-card{padding:10px;display:flex;justify-content:center;}
  .side-card .btn{padding:0 10px;}
  .hero-inner{padding:40px 32px;}
  .cta{padding:48px 36px;}
}

/* ============ 移动端 ============ */
@media (max-width:1023px){
  .topbar{display:flex;}
  .sidebar{
    width:280px;transform:translateX(-100%);
    transition:transform 220ms cubic-bezier(.2,.7,.3,1);z-index:95;padding:20px 16px;
  }
  .sidebar.is-open{transform:translateX(0);}
  .sidebar .brand-text{display:flex;}
  .page{margin-left:0;padding-top:56px;}
  .hero-inner{grid-template-columns:minmax(0,1fr);padding:32px 24px;gap:28px;}
  .layout{grid-template-columns:minmax(0,1fr);gap:40px;padding-top:48px;}
  .media-row{grid-template-columns:minmax(0,1fr);gap:24px;margin-bottom:40px;}
  .media-row.flip .pic{order:0;}
  .cta{grid-template-columns:minmax(0,1fr);padding:36px 24px;gap:28px;}
  .footer-grid{grid-template-columns:1fr;gap:0;}
  .footer-col{padding:24px 0;border-bottom:1px solid rgba(255,255,255,.12);}
  .footer-col:last-child{border-bottom:0;}
}

@media (max-width:640px){
  .wrap{padding:0 18px;}
  .grid-2{grid-template-columns:minmax(0,1fr);}
  .hero-inner{padding:28px 20px;}
  .hero .lead{font-size:16px;}
  .btn{width:100%;}
  .hero-actions{gap:10px;}
  .cta-side .row{font-size:13px;}
  .sec-head h2{font-size:24px;}
}

@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category3 */
:root{
  --paper:#F6F5F1;
  --paper-2:#FFFFFF;
  --paper-3:#F1F0EA;
  --deep:#0C1417;
  --deep-2:#142024;
  --ink:#12181B;
  --ink-soft:#5A666B;
  --line:#E3E1DA;
  --primary:#0F7A6C;
  --primary-deep:#0A5A50;
  --accent:#C8F45C;
  --secondary:#E8A33D;
  --danger:#C1443B;
  --ok:#0F7A6C;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --shadow-soft:0 12px 32px rgba(12,20,23,.10);
  --t:180ms cubic-bezier(.2,.7,.3,1);
  --sidebar-w:248px;
  --mono:ui-monospace,'SFMono-Regular',Menlo,Consolas,monospace;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:84px}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:'Noto Sans SC','PingFang SC','Hiragino Sans GB','Microsoft YaHei',system-ui,sans-serif;
  font-size:16px;
  line-height:1.78;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.25;letter-spacing:-.015em}
h1{font-size:clamp(32px,4.4vw,52px);font-weight:800;letter-spacing:-.02em;line-height:1.14}
h2{font-size:clamp(24px,2.6vw,32px)}
h3{font-size:20px;font-weight:600;line-height:1.35}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
::selection{background:var(--accent);color:var(--ink)}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-thumb{background:#CFCCC3;border-radius:8px;border:2px solid var(--paper)}
::-webkit-scrollbar-track{background:transparent}

.mono{font-family:var(--mono);font-weight:500}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

.skip-link{
  position:fixed;left:16px;top:-72px;z-index:300;
  background:var(--deep);color:#fff;font-size:14px;
  padding:10px 18px;border-radius:var(--r-btn);
  transition:top var(--t);
}
.skip-link:focus{top:16px}

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

/* ---------- 顶部栏（移动端） ---------- */
.topbar{
  position:fixed;top:0;left:0;right:0;height:56px;z-index:160;
  display:none;align-items:center;justify-content:space-between;
  padding:0 16px;background:var(--deep);
  border-bottom:1px solid rgba(255,255,255,.10);
}
.brand{display:flex;align-items:center;gap:10px}
.brand-mark{display:inline-flex;flex:0 0 auto;line-height:0}
.brand-text{display:flex;flex-direction:column;line-height:1.16}
.brand-name{font-size:16px;font-weight:800;letter-spacing:.02em;color:#fff}
.brand-sub{font-size:11px;letter-spacing:.12em;color:var(--accent)}
.burger{
  width:40px;height:40px;border-radius:10px;color:#fff;font-size:18px;
  display:inline-flex;align-items:center;justify-content:center;
  transition:background var(--t);
}
.burger:hover{background:var(--deep-2)}

/* ---------- 左侧 App Shell ---------- */
.sidebar{
  position:fixed;top:0;bottom:0;left:0;width:var(--sidebar-w);z-index:170;
  background:var(--deep);
  border-right:1px solid rgba(255,255,255,.08);
  display:flex;flex-direction:column;
  padding:20px 16px 16px;
  overflow-y:auto;
  transition:transform var(--t),width var(--t);
}
.side-brand{
  display:flex;align-items:center;gap:10px;
  padding:4px 8px 20px;margin-bottom:16px;
  border-bottom:1px solid rgba(255,255,255,.08);
}
.side-nav{display:flex;flex-direction:column;gap:4px}
.nav-item{
  position:relative;
  display:flex;align-items:center;gap:12px;
  height:40px;padding:0 12px;border-radius:10px;
  color:rgba(255,255,255,.72);font-size:15px;
  transition:background var(--t),color var(--t);
}
.nav-item i{width:18px;text-align:center;font-size:15px;flex:0 0 auto}
.nav-item:hover{background:var(--deep-2);color:#fff}
.nav-item.is-active{background:var(--deep-2);color:#fff}
.nav-item.is-active i{color:var(--accent)}
.nav-item.is-active::before{
  content:"";position:absolute;left:0;top:8px;bottom:8px;width:3px;
  border-radius:2px;background:var(--accent);
}
.sbar-foot{margin-top:auto;padding-top:18px}
.sbar-card{
  border:1px solid rgba(255,255,255,.16);
  border-radius:var(--r-card);
  padding:14px;
}
.sbar-card p{font-size:13px;line-height:1.7;color:rgba(255,255,255,.66);margin-bottom:12px}
.btn-ghost-light{
  display:inline-flex;align-items:center;justify-content:center;
  width:100%;height:38px;border-radius:var(--r-btn);
  border:1px solid rgba(255,255,255,.38);
  color:#fff;font-size:14px;
  transition:background var(--t),border-color var(--t),color var(--t);
}
.btn-ghost-light:hover{background:var(--accent);border-color:var(--accent);color:var(--ink)}
.sbar-copy{margin-top:14px;font-size:12px;color:rgba(255,255,255,.42);text-align:center}

.overlay{
  position:fixed;inset:0;z-index:150;
  background:rgba(12,20,23,.55);
  opacity:0;visibility:hidden;
  transition:opacity var(--t),visibility var(--t);
}
.overlay.is-open{opacity:1;visibility:visible}

/* ---------- 主内容 ---------- */
.main{margin-left:var(--sidebar-w);min-height:100vh;display:flex;flex-direction:column}

/* ---------- 面包屑 ---------- */
.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  padding:28px 0 20px;font-size:13px;color:var(--ink-soft);
}
.crumbs a{color:var(--primary);transition:color var(--t)}
.crumbs a:hover{text-decoration:underline;text-underline-offset:3px}
.crumbs .sep{color:rgba(18,24,27,.35)}
.crumbs .current{color:var(--ink-soft)}

/* ---------- 页头 ---------- */
.page-hero{
  padding:26px 0 44px;
  border-bottom:1px solid var(--line);
  background-color:var(--paper);
}
.page-hero.has-bg{
  background-image:linear-gradient(rgba(246,245,241,.93),rgba(246,245,241,.97)),url('/assets/images/backpic/back-3.png');
  background-size:cover;
  background-position:center;
}
.hero-row{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:32px;flex-wrap:wrap;
}
.hero-copy{max-width:720px}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--mono);font-size:12px;letter-spacing:.12em;
  color:var(--primary);margin-bottom:16px;
}
.eyebrow::before{content:"";width:24px;height:2px;background:var(--primary);border-radius:2px}
.hero-lead{margin-top:16px;font-size:17px;line-height:1.8;color:var(--ink-soft)}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:500;white-space:nowrap;
  transition:background var(--t),color var(--t),border-color var(--t),transform var(--t);
}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-deep);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-outline{border:1.5px solid var(--primary);color:var(--primary);background:transparent}
.btn-outline:hover{background:rgba(15,122,108,.10)}
.btn-accent{background:var(--accent);color:var(--ink)}
.btn-accent:hover{filter:brightness(.95)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn i{font-size:13px;transition:transform var(--t)}
.btn:hover i.fa-arrow-right{transform:translateX(4px)}

/* ---------- 主体两栏 ---------- */
.layout{
  display:grid;grid-template-columns:minmax(0,1fr) 320px;
  gap:48px;padding:56px 0 88px;
}
.block{margin-bottom:64px}
.block:last-child{margin-bottom:0}
.block-head{margin-bottom:28px}
.block-head h2{letter-spacing:-.015em}
.block-head p{margin-top:10px;font-size:15px;color:var(--ink-soft);max-width:640px}

/* ---------- 功能参数卡 ---------- */
.fn-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.fn-card{
  background:var(--paper-2);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:26px;
  transition:transform var(--t),border-color var(--t);
}
.fn-card:hover{transform:translateY(-2px);border-color:var(--primary)}
.fn-card:hover h3{color:var(--primary)}
.fn-card h3{transition:color var(--t)}
.fn-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.fn-num{font-family:var(--mono);font-size:13px;letter-spacing:.1em;color:var(--secondary)}
.fn-card p{margin-top:10px;font-size:15px;line-height:1.8;color:var(--ink-soft)}
.tag{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;
  border-radius:999px;background:var(--paper-3);color:var(--ink);
  font-size:12px;letter-spacing:.02em;white-space:nowrap;
}
.tag-accent{background:var(--accent);color:var(--ink)}

/* ---------- 对照表 ---------- */
.table-scroll{
  overflow-x:auto;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  background:var(--paper-2);
}
.cmp{min-width:700px;font-size:14px}
.cmp th,.cmp td{
  padding:14px 18px;text-align:left;
  border-bottom:1px solid var(--line);
  vertical-align:top;
}
.cmp thead th{
  background:var(--paper-3);
  font-size:13px;font-weight:600;color:var(--ink);
  letter-spacing:.02em;white-space:nowrap;
}
.cmp tbody th{font-weight:600;color:var(--ink);white-space:nowrap}
.cmp tbody td{color:var(--ink-soft);line-height:1.75}
.cmp tbody tr:last-child th,.cmp tbody tr:last-child td{border-bottom:0}
.cmp tbody tr{transition:background var(--t)}
.cmp tbody tr:hover{background:var(--paper-3)}

/* ---------- 图文说明 ---------- */
.media-block{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:32px;align-items:center;
  background:var(--paper-2);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:28px;
}
.media-block img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:var(--r-img);
  border:1px solid var(--line);
  background:var(--paper-3);
}
.media-body h3{margin-bottom:14px}
.check-list li{
  position:relative;padding-left:20px;margin-bottom:10px;
  font-size:15px;line-height:1.75;color:var(--ink-soft);
}
.check-list li::before{
  content:"";position:absolute;left:0;top:11px;
  width:6px;height:6px;border-radius:1px;background:var(--primary);
}
.check-list li:last-child{margin-bottom:0}
.media-body .link-more{
  display:inline-flex;align-items:center;gap:8px;
  margin-top:18px;color:var(--primary);font-size:15px;
}
.media-body .link-more i{font-size:12px;transition:transform var(--t)}
.media-body .link-more:hover i{transform:translateX(4px)}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line);transition:background var(--t)}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 12px;cursor:pointer;list-style:none;
  font-size:17px;font-weight:500;line-height:1.5;
  transition:color var(--t);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::marker{content:""}
.faq-item summary::after{
  content:"+";font-family:var(--mono);font-size:20px;line-height:1;
  color:var(--ink-soft);flex:0 0 auto;
  transition:transform var(--t),color var(--t);
}
.faq-item[open] summary{color:var(--primary)}
.faq-item[open] summary::after{content:"×";transform:rotate(90deg);color:var(--primary)}
.faq-item:hover{background:var(--paper-3)}
.faq-body{padding:0 12px 20px;font-size:15px;line-height:1.82;color:var(--ink-soft);max-width:760px}

/* ---------- 页尾操作 ---------- */
.back-row{
  display:flex;flex-wrap:wrap;gap:14px;
  margin-top:48px;padding-top:32px;
  border-top:1px solid var(--line);
}

/* ---------- 侧栏 ---------- */
.layout-side{display:flex;flex-direction:column;gap:20px}
.panel{
  background:var(--paper-2);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:24px;
}
.panel h3{font-size:16px;font-weight:600;margin-bottom:14px}
.panel-list{display:flex;flex-direction:column}
.panel-list a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:11px 0;font-size:14px;color:var(--ink-soft);
  border-bottom:1px solid var(--line);
  transition:color var(--t);
}
.panel-list a:last-child{border-bottom:0}
.panel-list a:hover{color:var(--primary)}
.panel-list a i{font-size:12px;color:var(--primary);transition:transform var(--t)}
.panel-list a:hover i{transform:translateX(4px)}
.mini-item{
  display:block;padding:12px 0;
  border-bottom:1px solid var(--line);
  transition:color var(--t);
}
.mini-item:last-child{border-bottom:0;padding-bottom:0}
.mini-time{font-family:var(--mono);font-size:12px;color:var(--ink-soft)}
.mini-title{
  display:flex;align-items:flex-start;justify-content:space-between;gap:10px;
  margin-top:5px;font-size:14px;line-height:1.6;color:var(--ink);
  transition:color var(--t);
}
.mini-title i{font-size:11px;color:var(--primary);margin-top:6px;transition:transform var(--t)}
.mini-item:hover .mini-title{color:var(--primary)}
.mini-item:hover .mini-title i{transform:translateX(4px)}
.panel-dark{background:var(--deep);border-color:transparent}
.panel-dark h3{color:#fff}
.panel-dark p{font-size:14px;line-height:1.75;color:rgba(255,255,255,.68);margin-bottom:18px}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--deep);
  color:rgba(255,255,255,.72);
  padding:64px 0 28px;
  margin-top:auto;
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px}
.footer-col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-col p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);max-width:330px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:rgba(255,255,255,.72);transition:color var(--t)}
.footer-links a:hover{color:var(--accent)}
.footer-contact{display:flex;flex-direction:column;gap:10px;font-size:14px;color:rgba(255,255,255,.72)}
.footer-contact .mono{color:#fff}
.footer-bottom{
  margin-top:40px;padding-top:20px;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;align-items:center;justify-content:space-between;
  gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.55);
}
.to-top{display:inline-flex;align-items:center;gap:6px;color:rgba(255,255,255,.72);transition:color var(--t)}
.to-top:hover{color:var(--accent)}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .sidebar{width:72px;padding:18px 10px}
  .side-brand{justify-content:center;padding:4px 0 18px;margin-bottom:14px}
  .side-brand .brand-text{display:none}
  .nav-item{justify-content:center;padding:0;gap:0}
  .nav-item .nav-label{display:none}
  .nav-item.is-active::before{display:none}
  .nav-item::after{
    content:attr(data-tip);
    position:absolute;left:calc(100% + 14px);top:50%;
    transform:translateY(-50%);
    background:var(--deep-2);color:#fff;font-size:13px;
    padding:6px 10px;border-radius:8px;white-space:nowrap;
    opacity:0;pointer-events:none;z-index:30;
    transition:opacity var(--t);
  }
  .nav-item:hover::after{opacity:1}
  .sbar-card{display:none}
  .sbar-copy{display:none}
  .main{margin-left:72px}
  .wrap{padding:0 24px}
}

@media (max-width:1023px){
  html{scroll-padding-top:72px}
  .topbar{display:flex}
  .main{margin-left:0;padding-top:56px}
  .sidebar{
    width:280px;padding:18px 16px;
    transform:translateX(-100%);
    box-shadow:0 12px 32px rgba(12,20,23,.40);
  }
  .sidebar.is-open{transform:translateX(0)}
  .side-brand{justify-content:flex-start;padding:4px 8px 18px}
  .side-brand .brand-text{display:flex}
  .nav-item{justify-content:flex-start;padding:0 12px;gap:12px;height:48px}
  .nav-item .nav-label{display:inline}
  .nav-item::after{display:none}
  .sbar-card{display:block}
  .sbar-copy{display:block}
  .layout{grid-template-columns:1fr;gap:40px;padding:44px 0 64px}
  .layout-side{position:static}
  .block{margin-bottom:52px}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (min-width:1024px){
  .overlay{display:none}
  .layout-side{position:sticky;top:24px;align-self:start}
}
@media (max-width:767px){
  .fn-grid{grid-template-columns:1fr}
  .media-block{grid-template-columns:1fr;padding:22px}
  .fn-card{padding:22px}
  .panel{padding:20px}
}
@media (max-width:640px){
  .wrap{padding:0 20px}
  .page-hero{padding:20px 0 34px}
  .hero-row{align-items:flex-start;gap:22px}
  .hero-row .btn{width:100%}
  .hero-lead{font-size:16px}
  .block{margin-bottom:44px}
  .footer-grid{grid-template-columns:1fr;gap:0}
  .footer-col{padding:20px 0;border-bottom:1px solid rgba(255,255,255,.12)}
  .footer-col:last-child{border-bottom:0;padding-bottom:0}
  .footer-col p{max-width:none}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  html{scroll-behavior:auto}
}

/* roulang page: category4 */
:root{
  --paper:#F6F5F1;
  --paper-2:#FFFFFF;
  --paper-3:#F1F0EA;
  --deep:#0C1417;
  --deep-2:#142024;
  --ink:#12181B;
  --ink-soft:#5A666B;
  --line:#E3E1DA;
  --primary:#0F7A6C;
  --primary-deep:#0A5A50;
  --accent:#C8F45C;
  --secondary:#E8A33D;
  --danger:#C1443B;
  --ok:#0F7A6C;
  --font-cn:'Noto Sans SC','PingFang SC','Hiragino Sans GB','Microsoft YaHei',system-ui,sans-serif;
  --mono:ui-monospace,'SFMono-Regular',Menlo,Consolas,monospace;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --sidebar-w:248px;
}
*,*::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-cn);
  font-size:16px;
  line-height:1.8;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer}
ul,ol{margin:0;padding:0}
h1,h2,h3,h4{margin:0;letter-spacing:-.015em}
p{margin:0}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums;font-weight:500}

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:6px;
}

.skip{
  position:absolute;left:-9999px;top:0;z-index:120;
  background:var(--accent);color:var(--ink);font-weight:700;
  padding:10px 18px;border-radius:0 0 10px 0;
}
.skip:focus{left:0}

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

/* ============ 侧边导航 ============ */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:280px;
  background:var(--deep);
  border-right:1px solid rgba(255,255,255,.08);
  z-index:60;
  transform:translateX(-100%);
  transition:transform 180ms var(--ease);
  overflow-y:auto;
  overscroll-behavior:contain;
}
.sidebar.open{transform:none}
.side-inner{display:flex;flex-direction:column;min-height:100%}

.brand{display:flex;align-items:center;gap:10px;padding:20px 16px 18px}
.brand-mark{display:inline-flex;flex:0 0 auto}
.brand-name{display:block;color:#fff;font-size:16px;font-weight:700;line-height:1.3}
.brand-sub{display:block;color:var(--accent);font-size:11px;letter-spacing:.08em;line-height:1.4;font-family:var(--mono)}

.side-nav{display:flex;flex-direction:column;gap:4px;padding:0 16px;margin-bottom:18px}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;
  height:48px;padding:0 14px;border-radius:10px;
  color:rgba(255,255,255,.72);font-size:15px;
  transition:background 180ms var(--ease),color 180ms var(--ease);
}
.nav-item i{width:18px;text-align:center;font-size:15px;color:rgba(255,255,255,.55);transition:color 180ms var(--ease)}
.nav-item:hover{background:var(--deep-2);color:#fff}
.nav-item:hover i{color:rgba(255,255,255,.85)}
.nav-item.active{background:var(--deep-2);color:#fff}
.nav-item.active i{color:var(--accent)}
.nav-item.active::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:20px;border-radius:2px;background:var(--accent);
}

.side-sub{margin-top:auto;padding:0 16px 20px}
.side-card{
  background:var(--deep-2);
  border:1px solid rgba(255,255,255,.10);
  border-radius:12px;
  padding:16px;
}
.side-card p{font-size:13px;line-height:1.7;color:rgba(255,255,255,.6);margin-bottom:12px}
.ghost-btn{
  display:flex;align-items:center;justify-content:center;gap:8px;
  height:40px;border-radius:10px;
  border:1px solid rgba(255,255,255,.28);
  color:#fff;font-size:14px;
  transition:background 180ms var(--ease),border-color 180ms var(--ease);
}
.ghost-btn:hover{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.45)}
.side-copy{margin-top:14px;font-size:12px;line-height:1.7;color:rgba(255,255,255,.42)}

/* ============ 顶部栏（移动端） ============ */
.topbar{
  position:fixed;top:0;left:0;right:0;height:56px;z-index:50;
  display:flex;align-items:center;justify-content:space-between;
  padding:0 16px;background:var(--deep);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.topbar .brand{padding:0;gap:8px}
.topbar .brand-name{font-size:15px}
.topbar .brand-sub{font-size:10px}
.burger{
  width:40px;height:40px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  background:transparent;border:1px solid rgba(255,255,255,.22);
  color:#fff;font-size:16px;
  transition:background 180ms var(--ease),border-color 180ms var(--ease);
}
.burger:hover{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.4)}
.scrim{
  position:fixed;inset:0;z-index:55;
  background:rgba(12,20,23,.55);
  opacity:0;pointer-events:none;transition:opacity 180ms var(--ease);
}
.scrim.show{opacity:1;pointer-events:auto}

/* ============ 主区域 ============ */
.main{padding-top:56px}
@media(min-width:1024px){
  .sidebar{width:72px;transform:none}
  .scrim{display:none}
  .topbar{display:none}
  .main{padding-top:0;margin-left:72px}
  .brand-text,.side-card,.side-copy,.side-sub{display:none}
  .brand{justify-content:center;padding:20px 0 18px}
  .side-nav{padding:0 12px}
  .nav-item{height:40px;justify-content:center;padding:0}
  .nav-item span{display:none}
}
@media(min-width:1280px){
  .sidebar{width:var(--sidebar-w)}
  .main{margin-left:var(--sidebar-w)}
  .brand-text{display:inline-flex;flex-direction:column}
  .brand{justify-content:flex-start;padding:20px 16px 18px}
  .side-nav{padding:0 16px}
  .nav-item{height:40px;justify-content:flex-start;padding:0 12px 0 18px}
  .nav-item span{display:inline}
  .side-sub{display:block}
  .side-card{display:block}
  .side-copy{display:block}
}

/* ============ 通用元素 ============ */
.section{padding:56px 0}
@media(min-width:768px){.section{padding:72px 0}}
@media(min-width:1024px){.section{padding:88px 0}}
.section-tight{padding:40px 0}
@media(min-width:1024px){.section-tight{padding:48px 0}}

.eyebrow{
  display:inline-block;font-size:13px;font-weight:600;letter-spacing:.06em;
  color:var(--primary);margin-bottom:12px;
}
.eyebrow.light{color:var(--accent)}

h1{font-size:clamp(30px,4.2vw,52px);font-weight:800;letter-spacing:-.02em;line-height:1.16}
h2{font-size:clamp(24px,2.8vw,34px);font-weight:700;line-height:1.24}
h3{font-size:20px;font-weight:600;line-height:1.4}
.lead{font-size:17px;line-height:1.85;color:var(--ink-soft);max-width:620px}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1.5px solid transparent;
  transition:background 180ms var(--ease),color 180ms var(--ease),
             transform 180ms var(--ease),border-color 180ms var(--ease),filter 180ms var(--ease);
}
.btn:hover{transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-deep)}
.btn-outline{background:transparent;border-color:var(--primary);color:var(--primary)}
.btn-outline:hover{background:rgba(15,122,108,.10)}
.btn-accent{background:var(--accent);color:var(--ink)}
.btn-accent:hover{filter:brightness(.96)}
.btn-ghost-dark{background:transparent;border-color:rgba(255,255,255,.38);color:#fff}
.btn-ghost-dark:hover{background:rgba(255,255,255,.10);border-color:rgba(255,255,255,.6)}
.btn-sm{height:42px;padding:0 18px;font-size:14px}

.link-arrow{
  display:inline-flex;align-items:center;gap:8px;
  color:var(--primary);font-weight:600;font-size:15px;
}
.link-arrow i{transition:transform 180ms var(--ease)}
.link-arrow:hover i{transform:translateX(4px)}

/* ============ 面包屑与页头 ============ */
.crumbs{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:13px;color:var(--ink-soft);padding-top:32px;
}
.crumbs a{color:var(--primary)}
.crumbs a:hover{text-decoration:underline}
.crumbs .sep{color:rgba(90,102,107,.4)}
.crumbs .cur{color:var(--ink-soft)}

.page-head{background:var(--paper);border-bottom:1px solid var(--line);padding-bottom:0}
.head-grid{
  display:grid;grid-template-columns:1fr;gap:32px;
  padding:28px 0 40px;align-items:center;
}
@media(min-width:1024px){
  .head-grid{grid-template-columns:1.1fr .9fr;gap:48px;padding:36px 0 52px}
}
.head-copy h1{margin-bottom:16px}
.head-copy .lead{margin-bottom:24px}
.head-actions{display:flex;flex-wrap:wrap;gap:12px}
.head-media img{
  width:100%;aspect-ratio:16/9;object-fit:cover;
  border-radius:var(--radius-img);border:1px solid var(--line);
  background:var(--paper-3);
}
.head-facts{
  display:grid;grid-template-columns:1fr;gap:0;
  border-top:1px solid var(--line);
}
@media(min-width:768px){.head-facts{grid-template-columns:repeat(3,1fr)}}
.head-facts span{
  display:flex;align-items:center;gap:10px;
  padding:16px 0;font-size:14px;color:var(--ink-soft);
  border-bottom:1px solid var(--line);
}
@media(min-width:768px){
  .head-facts span{border-bottom:0;border-right:1px solid var(--line);padding:18px 20px}
  .head-facts span:first-child{padding-left:0}
  .head-facts span:last-child{border-right:0}
}
.head-facts i{color:var(--primary)}

/* ============ 板块标题 ============ */
.sec-head{
  display:flex;flex-direction:column;gap:12px;margin-bottom:32px;
}
@media(min-width:768px){
  .sec-head{flex-direction:row;align-items:flex-end;justify-content:space-between;gap:40px;margin-bottom:40px}
}
.sec-head .sec-desc{font-size:15px;color:var(--ink-soft);max-width:460px}

/* ============ 三步自查 ============ */
.step-grid{display:grid;grid-template-columns:1fr;gap:20px}
@media(min-width:768px){.step-grid{grid-template-columns:repeat(3,1fr);gap:24px}}
.step-card{
  background:var(--paper-2);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:26px 24px;
  transition:transform 180ms var(--ease),border-color 180ms var(--ease);
}
.step-card:hover{transform:translateY(-2px);border-color:var(--primary)}
.step-num{
  display:inline-block;font-size:13px;color:var(--secondary);
  letter-spacing:.14em;margin-bottom:14px;
}
.step-card h3{margin-bottom:10px;transition:color 180ms var(--ease)}
.step-card:hover h3{color:var(--primary)}
.step-card p{font-size:15px;line-height:1.8;color:var(--ink-soft)}

/* ============ FAQ 主体 ============ */
.body-grid{display:grid;grid-template-columns:1fr;gap:40px}
@media(min-width:1024px){
  .body-grid{grid-template-columns:minmax(0,1fr) 320px;gap:48px;align-items:start}
}
.faq-group{margin-bottom:48px}
.faq-group:last-child{margin-bottom:0}
.faq-group{scroll-margin-top:88px}
.group-head{display:flex;align-items:center;gap:12px;margin-bottom:20px}
.group-index{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:36px;height:26px;padding:0 8px;border-radius:999px;
  background:var(--paper-3);color:var(--ink);
  font-size:12px;letter-spacing:.08em;
}
.group-head h2{font-size:clamp(20px,2.2vw,26px)}

.acc-list{border-top:1px solid var(--line)}
.acc{border-bottom:1px solid var(--line)}
.acc-head{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:18px 12px 18px 0;background:transparent;border:0;text-align:left;
  font-size:17px;font-weight:500;color:var(--ink);line-height:1.6;
  transition:background 180ms var(--ease),color 180ms var(--ease);
}
.acc-head:hover{background:var(--paper-3);color:var(--primary)}
.acc.open .acc-head{color:var(--primary)}
.acc-icon{
  flex:0 0 auto;color:var(--ink-soft);font-size:14px;
  transition:transform 180ms var(--ease),color 180ms var(--ease);
}
.acc.open .acc-icon{transform:rotate(45deg);color:var(--primary)}
.acc-panel{
  display:grid;grid-template-rows:0fr;
  transition:grid-template-rows 220ms var(--ease);
}
.acc.open .acc-panel{grid-template-rows:1fr}
.acc-body{overflow:hidden;min-height:0}
.acc-body p{
  padding:0 40px 22px 0;
  font-size:15px;line-height:1.85;color:var(--ink-soft);
}

/* ============ 侧栏 ============ */
.body-side{display:flex;flex-direction:column;gap:20px}
.side-card-l{
  background:var(--paper-2);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:24px;
}
.side-title{font-size:15px;font-weight:700;margin-bottom:16px;color:var(--ink)}
.side-title.on-dark{color:#fff}
.anchor-list{display:flex;flex-direction:column;gap:4px}
.anchor-list a{
  position:relative;display:flex;align-items:center;gap:10px;
  height:38px;padding:0 10px;border-radius:8px;
  font-size:14px;color:var(--ink-soft);
  transition:background 180ms var(--ease),color 180ms var(--ease);
}
.anchor-list a .mono{font-size:12px;color:var(--ink-soft);letter-spacing:.06em}
.anchor-list a:hover{background:var(--paper-3);color:var(--ink)}
.anchor-list a.active{color:var(--primary);background:var(--paper-3)}
.anchor-list a.active .mono{color:var(--primary)}
.anchor-list a.active::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:16px;border-radius:2px;background:var(--primary);
}
.mini-list{display:flex;flex-direction:column;gap:2px;list-style:none}
.mini-list a{
  display:flex;align-items:center;gap:12px;
  padding:12px 10px;border-radius:10px;
  transition:background 180ms var(--ease);
}
.mini-list a:hover{background:var(--paper-3)}
.mini-time{
  flex:0 0 auto;font-size:12px;color:var(--ink-soft);
  letter-spacing:.06em;
}
.mini-t{flex:1;font-size:14px;line-height:1.6;color:var(--ink)}
.mini-list a i{color:var(--primary);font-size:12px;transition:transform 180ms var(--ease)}
.mini-list a:hover i{transform:translateX(4px)}
.side-card-dark{
  background:var(--deep);border:0;border-radius:var(--radius-card);padding:24px;
}
.side-card-dark p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.68);margin-bottom:16px}
.side-card-dark .btn{width:100%}

/* ============ CTA ============ */
.cta-band{background:var(--deep);padding:56px 0}
@media(min-width:1024px){.cta-band{padding:72px 0}}
.cta-grid{display:grid;grid-template-columns:1fr;gap:28px;align-items:center}
@media(min-width:1024px){.cta-grid{grid-template-columns:1.2fr .8fr;gap:56px}}
.cta-copy h2{color:#fff;margin-bottom:12px}
.cta-copy p{color:rgba(255,255,255,.68);font-size:16px;line-height:1.8;max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
@media(min-width:1024px){.cta-actions{justify-content:flex-end}}

/* ============ 页尾入口条 ============ */
.back-row{
  display:flex;flex-wrap:wrap;gap:28px;align-items:center;
  padding-top:32px;border-top:1px solid var(--line);
}

/* ============ 页脚 ============ */
.site-footer{background:var(--deep);color:rgba(255,255,255,.72);padding:56px 0 0;margin-top:0}
@media(min-width:1024px){.site-footer{padding:72px 0 0}}
.footer-grid{display:grid;grid-template-columns:1fr;gap:28px;padding-bottom:36px}
@media(min-width:768px){.footer-grid{grid-template-columns:1fr 1fr;gap:32px}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr}}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-col p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.6)}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{
  font-size:14px;color:rgba(255,255,255,.72);
  transition:color 180ms var(--ease);
}
.footer-links a:hover{color:var(--accent)}
.footer-contact{list-style:none;display:flex;flex-direction:column;gap:10px;font-size:14px}
.footer-contact .mono{color:rgba(255,255,255,.86)}
.site-footer .brand-name{color:#fff;font-size:15px}
.site-footer .brand-sub{color:var(--accent);font-size:10px}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 26px;font-size:13px;color:rgba(255,255,255,.55);
}
.to-top{
  display:inline-flex;align-items:center;gap:8px;
  color:rgba(255,255,255,.72);font-size:13px;
  transition:color 180ms var(--ease);
}
.to-top:hover{color:var(--accent)}

@media(max-width:767px){
  .footer-col + .footer-col{border-top:1px solid rgba(255,255,255,.12);padding-top:24px}
}

@media (prefers-reduced-motion: reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important}
}