/* roulang page: index */
:root{
  --brand:#0E9E7A;
  --brand-dark:#0A6E56;
  --brand-soft:#E4F5EF;
  --ink:#14181B;
  --ink-2:#3D4548;
  --ink-3:#6E7679;
  --amber:#E0A03C;
  --amber-soft:#FAF0DC;
  --paper:#F7F6F2;
  --card:#FFFFFF;
  --soft:#F1EFE8;
  --deep:#10171A;
  --line:#E3DFD6;
  --line-ink:rgba(255,255,255,.12);
  --r-sm:8px;
  --r-md:12px;
  --r-lg:16px;
  --r-btn:10px;
  --sh-1:0 1px 2px rgba(20,24,27,.05);
  --sh-2:0 10px 28px -14px rgba(20,24,27,.22);
  --t:180ms ease;
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
  --mono:ui-monospace,"JetBrains Mono","SFMono-Regular",Menlo,Consolas,monospace;
  --max:1200px;
  --sec:88px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--ink-2);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font:inherit}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
h1,h2,h3,h4{color:var(--ink);line-height:1.25}
input,select,textarea{font-family:inherit;font-size:15px;color:var(--ink)}
:focus-visible{outline:3px solid var(--brand-soft);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 24px}
.num{font-family:var(--mono);font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--t);
}
.site-header.is-scrolled{box-shadow:0 6px 24px -18px rgba(20,24,27,.5)}
.nav-wrap{
  display:flex;align-items:center;gap:28px;
  height:68px;
}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.logo svg{width:24px;height:24px;flex:0 0 auto}
.logo-text{font-size:18px;font-weight:700;color:var(--ink);letter-spacing:0}
.nav-main{display:flex;align-items:center;gap:28px;margin-left:8px}
.nav-main a{
  position:relative;
  font-size:14px;color:var(--ink-2);
  padding:6px 0;
  transition:color var(--t);
  white-space:nowrap;
}
.nav-main a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;
  transition:transform var(--t);
}
.nav-main a:hover{color:var(--brand)}
.nav-main a:hover::after,.nav-main a.active::after{transform:scaleX(1)}
.nav-main a.active{color:var(--brand);font-weight:600}
.nav-right{display:flex;align-items:center;gap:12px;margin-left:auto}
.nav-search{
  position:relative;display:flex;align-items:center;
}
.nav-search svg{position:absolute;left:12px;width:15px;height:15px;color:var(--ink-3);pointer-events:none}
.nav-search input{
  width:200px;height:38px;
  padding:0 12px 0 34px;
  border:1px solid transparent;
  border-radius:999px;
  background:#F3F2ED;
  font-size:13px;
  transition:background var(--t),border-color var(--t),box-shadow var(--t);
}
.nav-search input::placeholder{color:var(--ink-3)}
.nav-search input:focus{
  background:#fff;border-color:var(--brand);
  box-shadow:0 0 0 3px var(--brand-soft);
  outline:none;
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;
  border-radius:var(--r-btn);
  font-size:15px;font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:background var(--t),color var(--t),border-color var(--t),box-shadow var(--t),transform var(--t);
  white-space:nowrap;
}
.btn-primary{background:var(--ink);color:#fff}
.btn-primary:hover{background:var(--brand)}
.btn-primary:active{background:var(--brand-dark);transform:translateY(1px)}
.btn-brand{background:var(--brand);color:#fff}
.btn-brand:hover{background:var(--brand-dark)}
.btn-brand:active{background:var(--brand-dark);transform:translateY(1px)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{background:var(--brand-soft);border-color:var(--brand);color:var(--brand-dark)}
.btn-sm{height:38px;padding:0 16px;font-size:13px;border-radius:999px}
.btn:disabled,.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none}
.nav-cta{height:40px;padding:0 18px;font-size:14px;border-radius:999px}
.burger{
  display:none;width:42px;height:42px;
  align-items:center;justify-content:center;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-btn);
  cursor:pointer;
}
.burger span{display:block;width:18px;height:2px;background:var(--ink);position:relative;transition:var(--t)}
.burger span::before,.burger span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);transition:var(--t);
}
.burger span::before{top:-6px}
.burger span::after{top:6px}

.drawer{
  position:fixed;inset:0;z-index:120;
  background:#fff;
  display:none;
  flex-direction:column;
  padding:18px;
  overflow-y:auto;
}
.drawer.is-open{display:flex}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-close{
  width:42px;height:42px;border:1px solid var(--line);background:#fff;border-radius:var(--r-btn);
  font-size:20px;line-height:1;color:var(--ink);cursor:pointer;
}
.drawer .nav-search{width:100%;margin-bottom:14px}
.drawer .nav-search input{width:100%;height:44px;background:#F3F2ED}
.drawer-links a{
  display:flex;align-items:center;justify-content:space-between;
  height:52px;border-bottom:1px solid var(--line);
  font-size:15px;color:var(--ink);
}
.drawer-links a.active{color:var(--brand);font-weight:600}
.drawer-foot{margin-top:auto;padding-top:24px;font-size:13px;color:var(--ink-3);line-height:2}
.drawer-foot strong{display:block;color:var(--ink);font-size:14px;margin-bottom:4px}

/* ---------- Breadcrumb ---------- */
.crumb{background:#fff;border-bottom:1px solid var(--line)}
.crumb-inner{
  min-height:48px;display:flex;align-items:center;gap:8px;
  font-size:13px;color:var(--ink-3);
}
.crumb-inner a:hover{color:var(--brand)}
.crumb-sep{color:#C9C4B8}
.crumb-current{color:var(--ink);font-weight:600}

/* ---------- Hero ---------- */
.hero{padding:64px 0 0;background:linear-gradient(180deg,#FFFFFF 0%,var(--paper) 100%)}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:44px;align-items:center;min-height:520px}
.pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:5px 13px;border-radius:999px;
  font-size:13px;font-weight:600;
  background:var(--brand-soft);color:var(--brand-dark);
}
.pill-amber{background:var(--amber-soft);color:#8A5C12}
.pill-dot{width:6px;height:6px;border-radius:50%;background:var(--brand)}
.hero h1{
  margin-top:20px;
  font-size:clamp(32px,4.4vw,56px);
  line-height:1.15;font-weight:700;letter-spacing:-.01em;
}
.hero h1 .hl{color:var(--brand)}
.hero-sub{
  margin-top:18px;max-width:520px;
  font-size:17px;line-height:1.85;color:var(--ink-2);
}
.hero-actions{display:flex;gap:12px;margin-top:28px;flex-wrap:wrap}
.hero-micro{
  display:flex;align-items:center;gap:20px;margin-top:34px;flex-wrap:wrap;
}
.hero-micro .m{
  display:flex;align-items:baseline;gap:8px;
  padding-right:20px;border-right:1px solid var(--line);
}
.hero-micro .m:last-child{border-right:0;padding-right:0}
.hero-micro .m b{font-family:var(--mono);font-size:20px;color:var(--ink);font-weight:600}
.hero-micro .m span{font-size:13px;color:var(--ink-3)}
.hero-visual{position:relative}
.hero-figure{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid rgba(20,24,27,.06);
  background:#EDEBE4;
  box-shadow:var(--sh-2);
  aspect-ratio:4/3;
}
.hero-figure img{width:100%;height:100%;object-fit:cover}
.hero-figure::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(16,23,26,0) 45%,rgba(16,23,26,.42) 100%);
}
.hero-datacard{
  position:absolute;right:16px;bottom:16px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:14px 18px;box-shadow:var(--sh-2);
  min-width:180px;
}
.hero-datacard .label{font-size:12px;color:var(--ink-3);letter-spacing:.04em}
.hero-datacard .val{font-family:var(--mono);font-size:26px;font-weight:600;color:var(--ink);line-height:1.3}
.hero-datacard .val em{font-style:normal;font-size:13px;color:var(--ink-3);margin-left:4px}

/* ---------- Section basics ---------- */
.section{padding:var(--sec) 0}
.section-soft{background:var(--soft)}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:28px}
.sec-title{font-size:clamp(24px,2.6vw,34px);line-height:1.25;font-weight:700}
.sec-desc{margin-top:10px;max-width:640px;font-size:15px;color:var(--ink-3)}
.sec-eyebrow{
  font-family:var(--mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--brand);margin-bottom:10px;
}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--brand-dark);
  white-space:nowrap;
  transition:color var(--t);
}
.link-arrow svg{transition:transform var(--t)}
.link-arrow:hover{color:var(--brand)}
.link-arrow:hover svg{transform:translateX(4px)}

/* ---------- Metrics band ---------- */
.metrics{background:var(--deep);color:#fff;padding:56px 0 40px}
.metrics-head{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-bottom:28px}
.metrics-head .tag{
  font-family:var(--mono);font-size:12px;letter-spacing:.16em;text-transform:uppercase;
  color:rgba(255,255,255,.55);
}
.metrics-head .stamp{font-family:var(--mono);font-size:12px;color:rgba(255,255,255,.45)}
.metrics-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:0}
.metric{padding:6px 22px;border-left:1px solid var(--line-ink)}
.metric:first-child{border-left:0;padding-left:0}
.metric b{
  display:block;font-family:var(--mono);font-weight:600;
  font-size:clamp(28px,3.4vw,44px);line-height:1;color:#fff;
}
.metric b em{font-style:normal;font-size:14px;color:rgba(255,255,255,.55);margin-left:4px;font-weight:400}
.metric span{display:block;margin-top:10px;font-size:13px;color:rgba(255,255,255,.62);line-height:1.6}
.ruler{
  margin-top:34px;height:10px;
  background-image:repeating-linear-gradient(90deg,rgba(255,255,255,.22) 0 1px,transparent 1px 24px);
  border-bottom:1px solid var(--line-ink);
}

/* ---------- Cards base ---------- */
.card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:14px;
  padding:24px;
  box-shadow:var(--sh-1);
  transition:border-color var(--t),box-shadow var(--t),transform var(--t);
  display:flex;flex-direction:column;
}
.card:hover{border-color:var(--brand);box-shadow:var(--sh-2);transform:translateY(-2px)}
.card h3{font-size:16px;font-weight:600;line-height:1.5}
.card p{margin-top:8px;font-size:14px;color:var(--ink-3);line-height:1.8}
.card-meta{
  margin-top:auto;padding-top:16px;
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-family:var(--mono);font-size:13px;color:var(--ink-3);
}

/* ---------- Service matrix ---------- */
.matrix{display:grid;grid-template-columns:repeat(12,1fr);gap:20px}
.matrix-lead{
  grid-column:span 6;
  background:var(--deep);color:#fff;border-color:var(--deep);
  padding:0;overflow:hidden;position:relative;
  border-radius:14px;
}
.matrix-lead:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--deep)}
.matrix-lead figure{margin:0;aspect-ratio:16/9;background:#EDEBE4;overflow:hidden;border-bottom:1px solid rgba(255,255,255,.12)}
.matrix-lead figure img{width:100%;height:100%;object-fit:cover}
.matrix-lead .lead-body{padding:26px}
.matrix-lead .badge{
  display:inline-block;padding:4px 12px;border-radius:999px;
  background:rgba(228,245,239,.14);color:#8FE3CB;font-size:13px;font-weight:600;
}
.matrix-lead h3{margin-top:14px;font-size:22px;color:#fff;line-height:1.4}
.matrix-lead ul{margin-top:14px;display:flex;flex-direction:column;gap:8px}
.matrix-lead ul li{
  position:relative;padding-left:16px;font-size:14px;color:rgba(255,255,255,.72);line-height:1.75;
}
.matrix-lead ul li::before{
  content:"";position:absolute;left:0;top:11px;width:7px;height:1px;background:#8FE3CB;
}
.matrix-lead .lead-foot{
  display:flex;align-items:center;justify-content:space-between;
  margin-top:20px;padding-top:16px;border-top:1px solid var(--line-ink);
  font-family:var(--mono);font-size:13px;color:rgba(255,255,255,.5);
}
.matrix-lead .lead-foot .link-arrow{color:#8FE3CB}
.matrix-side{grid-column:span 6;display:grid;grid-template-columns:1fr 1fr;gap:20px}
.mini-card{padding:22px}
.mini-card .idx{
  font-family:var(--mono);font-size:12px;font-weight:600;color:var(--brand);
  letter-spacing:.1em;
}
.mini-card h3{margin-top:10px;font-size:17px}
.mini-card p{margin-top:8px;font-size:14px;color:var(--ink-3);line-height:1.8}
.mini-card .spec{
  margin-top:14px;padding-top:12px;border-top:1px dashed var(--line);
  font-family:var(--mono);font-size:12.5px;color:var(--ink-3);
}

/* ---------- Compare ---------- */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:start}
.compare-intro h2{font-size:clamp(24px,2.6vw,34px);line-height:1.25}
.compare-intro p{margin-top:14px;font-size:15px;color:var(--ink-3);line-height:1.85}
.compare-legend{display:flex;gap:20px;margin-top:22px;font-size:13px;color:var(--ink-3)}
.compare-legend i{display:inline-block;width:9px;height:9px;border-radius:2px;margin-right:6px;vertical-align:1px}
.dot-before{background:#B9B4A6}
.dot-after{background:var(--brand)}
.compare-list{display:flex;flex-direction:column;gap:22px}
.cmp-row .cmp-top{
  display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin-bottom:10px;
}
.cmp-row .cmp-name{font-size:14px;font-weight:600;color:var(--ink)}
.cmp-row .cmp-name em{font-style:normal;font-weight:400;font-size:12.5px;color:var(--ink-3);margin-left:8px}
.bar-line{display:flex;align-items:center;gap:12px}
.bar-tag{
  width:56px;flex:0 0 56px;font-size:12px;color:var(--ink-3);font-family:var(--mono);
}
.bar-track{flex:1;height:10px;border-radius:999px;background:var(--soft);overflow:hidden}
.bar-fill{height:100%;border-radius:999px;transition:width 600ms ease}
.fill-before{background:#B9B4A6}
.fill-after{background:var(--brand)}
.bar-val{width:78px;flex:0 0 78px;text-align:right;font-family:var(--mono);font-size:13px;color:var(--ink)}
.cmp-note{margin-top:22px;font-size:12.5px;color:var(--ink-3);line-height:1.8}

/* ---------- Process ---------- */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;counter-reset:step}
.flow-item{
  background:#fff;border:1px solid var(--line);border-radius:14px;padding:24px;
  position:relative;
  transition:border-color var(--t),box-shadow var(--t);
}
.flow-item:hover{border-color:var(--brand);box-shadow:var(--sh-2)}
.flow-item .step{
  font-family:var(--mono);font-size:13px;font-weight:600;color:var(--brand);
  display:inline-flex;align-items:center;gap:8px;
}
.flow-item .step::after{content:"";width:16px;height:1px;background:var(--brand);opacity:.5}
.flow-item h3{margin-top:12px;font-size:17px}
.flow-item p{margin-top:8px;font-size:14px;color:var(--ink-3);line-height:1.8}

/* ---------- News / CMS list ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.news-lead{grid-column:span 3;display:grid;grid-template-columns:6fr 6fr;gap:0;padding:0;overflow:hidden}
.news-lead figure{margin:0;background:#EDEBE4;aspect-ratio:16/9;overflow:hidden}
.news-lead figure img{width:100%;height:100%;object-fit:cover}
.news-lead .lead-txt{padding:28px;display:flex;flex-direction:column;justify-content:center}
.news-lead h3{margin-top:12px;font-size:22px;line-height:1.45}
.news-lead p{margin-top:12px;font-size:14.5px;color:var(--ink-3);line-height:1.85}
.badge{
  display:inline-block;padding:4px 12px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand-dark);
  font-size:13px;font-weight:600;
}
.badge-amber{background:var(--amber-soft);color:#8A5C12}
.thumb{
  aspect-ratio:16/9;border-radius:10px;overflow:hidden;background:#EDEBE4;
  border:1px solid rgba(20,24,27,.06);
  margin-bottom:16px;
  display:flex;align-items:center;justify-content:center;
}
.thumb img{width:100%;height:100%;object-fit:cover}
.thumb .ph{
  font-family:var(--mono);font-size:24px;color:#A9A498;font-weight:600;
}
.card h3 a{transition:color var(--t)}
.card h3 a:hover{color:var(--brand-dark)}
.clamp2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.empty-state{
  border:1px dashed var(--line);border-radius:14px;background:#fff;
  padding:34px 24px;text-align:center;color:var(--ink-3);font-size:14px;
  display:flex;flex-direction:column;align-items:center;gap:10px;min-height:140px;justify-content:center;
}
.empty-state svg{width:36px;height:36px;color:#C9C4B8}

/* ---------- Evidence ---------- */
.evidence{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.ev-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:26px;box-shadow:var(--sh-1)}
.ev-card .quote{font-size:15px;line-height:1.9;color:var(--ink-2)}
.ev-card .who{
  margin-top:18px;padding-top:16px;border-top:1px solid var(--line);
  display:flex;align-items:center;gap:12px;
}
.ev-avatar{
  width:38px;height:38px;border-radius:50%;background:var(--brand-soft);color:var(--brand-dark);
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px;flex:0 0 38px;
}
.ev-card .who b{display:block;font-size:14px;color:var(--ink);font-weight:600}
.ev-card .who span{display:block;font-size:12.5px;color:var(--ink-3)}
.ev-strip{
  display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:32px;
}
.ev-stat{
  background:var(--soft);border-radius:var(--r-md);padding:20px 22px;
}
.ev-stat b{display:block;font-family:var(--mono);font-size:26px;color:var(--ink);line-height:1.2}
.ev-stat span{display:block;margin-top:6px;font-size:13px;color:var(--ink-3)}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:880px;margin:0 auto}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  margin-bottom:10px;overflow:hidden;
  transition:border-color var(--t),box-shadow var(--t);
}
.faq-item:hover{border-color:#CFCABD}
.faq-item[open]{border-color:var(--brand);box-shadow:var(--sh-1)}
.faq-item summary{
  list-style:none;cursor:pointer;
  padding:20px 24px;
  font-size:16px;font-weight:600;color:var(--ink);
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-icon{
  flex:0 0 24px;width:24px;height:24px;border-radius:50%;
  background:var(--soft);color:var(--ink-2);
  display:flex;align-items:center;justify-content:center;
  font-size:16px;line-height:1;font-weight:400;
  transition:transform var(--t),background var(--t),color var(--t);
}
.faq-item[open] .faq-icon{transform:rotate(45deg);background:var(--brand-soft);color:var(--brand-dark)}
.faq-body{padding:0 24px 22px;font-size:15px;line-height:1.9;color:var(--ink-3)}

/* ---------- CTA form ---------- */
.cta-band{background:var(--soft);padding:72px 0}
.cta-grid{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:start}
.cta-left h2{font-size:clamp(24px,2.6vw,34px);line-height:1.25}
.cta-left p{margin-top:14px;font-size:15px;color:var(--ink-3);line-height:1.85}
.cta-points{margin-top:24px;display:flex;flex-direction:column;gap:12px}
.cta-points li{
  position:relative;padding-left:26px;font-size:14.5px;color:var(--ink-2);line-height:1.8;
}
.cta-points li::before{
  content:"";position:absolute;left:0;top:9px;width:14px;height:14px;border-radius:50%;
  background:var(--brand-soft);
}
.cta-points li::after{
  content:"";position:absolute;left:4.5px;top:13px;width:5px;height:5px;border-radius:50%;
  background:var(--brand);
}
.cta-contact{margin-top:28px;padding-top:22px;border-top:1px solid #DCD7C9;display:flex;flex-direction:column;gap:10px}
.cta-contact div{font-family:var(--mono);font-size:14px;color:var(--ink);}
.cta-contact span{font-family:var(--font);font-size:12.5px;color:var(--ink-3);margin-right:8px}
.form-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:28px;box-shadow:var(--sh-1);
}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{margin-bottom:16px;display:flex;flex-direction:column;gap:7px}
.field label{font-size:13px;color:var(--ink-2);font-weight:600}
.field input,.field select,.field textarea{
  width:100%;height:46px;padding:0 14px;
  border:1px solid var(--line);border-radius:var(--r-btn);
  background:#fff;
  transition:border-color var(--t),box-shadow var(--t);
}
.field textarea{height:auto;min-height:110px;padding:12px 14px;resize:vertical;line-height:1.7}
.field input::placeholder,.field textarea::placeholder{color:#A9A498}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft);
}
.field.has-error input,.field.has-error textarea,.field.has-error select{border-color:#C0483A}
.err-tip{display:none;font-size:12px;color:#C0483A}
.field.has-error .err-tip{display:block}
.form-note{margin-top:12px;font-size:12px;color:var(--ink-3);line-height:1.8}
.form-ok{
  display:none;margin-top:14px;padding:12px 14px;border-radius:var(--r-btn);
  background:var(--brand-soft);color:var(--brand-dark);font-size:13.5px;
}
.form-ok.is-on{display:block}

/* ---------- Footer ---------- */
.site-footer{background:var(--deep);color:rgba(255,255,255,.7);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px}
.f-brand .logo-text{color:#fff}
.f-brand p{margin-top:16px;font-size:13.5px;line-height:1.9;color:rgba(255,255,255,.6);max-width:300px}
.f-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.f-tags span{
  display:inline-block;padding:4px 11px;border-radius:999px;
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.1);
  font-size:12px;color:rgba(255,255,255,.72);
}
.f-col h4{font-size:14px;color:#fff;margin-bottom:16px;letter-spacing:.02em;font-weight:600}
.f-col a{display:block;font-size:14px;line-height:2;color:rgba(255,255,255,.66);transition:color var(--t)}
.f-col a:hover{color:#8FE3CB}
.f-contact div{font-family:var(--mono);font-size:14px;color:#fff;margin-bottom:6px}
.f-contact span{font-family:var(--font);font-size:12.5px;color:rgba(255,255,255,.5);display:block;margin-bottom:14px}
.footer-bottom{
  margin-top:48px;border-top:1px solid rgba(255,255,255,.1);
  padding:20px 0 26px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.45);
}
.footer-links{display:flex;gap:18px;flex-wrap:wrap}
.footer-links a:hover{color:#8FE3CB}

/* ---------- Responsive ---------- */
@media (max-width:1279px){
  .container{padding:0 24px}
  .nav-main{gap:20px}
  .nav-search input{width:170px}
}
@media (max-width:1023px){
  :root{--sec:64px}
  .nav-main{display:none}
  .nav-search{display:none}
  .burger{display:flex}
  .nav-right{gap:10px}
  .hero{padding-top:40px}
  .hero-grid{grid-template-columns:6fr 6fr;gap:28px;min-height:0}
  .metrics-grid{grid-template-columns:repeat(3,1fr);row-gap:26px}
  .metric{border-left:0;padding:0}
  .metric:nth-child(3n+1){padding-left:0}
  .matrix{grid-template-columns:repeat(6,1fr)}
  .matrix-lead{grid-column:span 6}
  .matrix-side{grid-column:span 6}
  .compare{grid-template-columns:1fr;gap:32px}
  .flow{grid-template-columns:repeat(2,1fr)}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .news-lead{grid-column:span 2}
  .evidence{grid-template-columns:1fr}
  .ev-strip{grid-template-columns:repeat(2,1fr)}
  .cta-grid{grid-template-columns:1fr;gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  :root{--sec:48px}
  .container{padding:0 18px}
  .hero-grid{grid-template-columns:1fr}
  .hero-figure{aspect-ratio:16/9}
  .hero-datacard{position:static;margin-top:12px;min-width:0;box-shadow:none}
  .hero-micro{gap:14px}
  .hero-micro .m{padding-right:14px}
  .hero-actions .btn{flex:1 1 46%}
  .metrics{padding:40px 0 28px}
  .metrics-grid{grid-template-columns:repeat(2,1fr);row-gap:24px}
  .matrix{grid-template-columns:1fr}
  .matrix-lead,.matrix-side{grid-column:span 1}
  .matrix-side{grid-template-columns:1fr}
  .flow{grid-template-columns:1fr}
  .news-grid{grid-template-columns:1fr}
  .news-lead{grid-column:span 1;grid-template-columns:1fr}
  .news-lead figure{aspect-ratio:16/9}
  .ev-strip{grid-template-columns:1fr}
  .form-row{grid-template-columns:1fr}
  .form-card{padding:22px}
  .cta-band{padding:52px 0}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .crumb-inner{font-size:12px}
  .sec-head{flex-direction:column;align-items:flex-start;gap:12px}
  .bar-tag{width:44px;flex:0 0 44px;font-size:11px}
  .bar-val{width:64px;flex:0 0 64px;font-size:12px}
  .faq-item summary{padding:16px 18px;font-size:15px}
  .faq-body{padding:0 18px 18px;font-size:14px}
}
@media (max-width:480px){
  body{font-size:15px}
  .container{padding:0 16px}
  .hero h1{font-size:30px}
  .hero-actions .btn{flex:1 1 100%;width:100%}
  .metric b{font-size:26px}
  .hero-micro{flex-direction:column;align-items:flex-start;gap:10px}
  .hero-micro .m{border-right:0;padding-right:0}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}

/* roulang page: category1 */
:root{
  --brand:#0E9E7A;
  --brand-dark:#0A6E56;
  --brand-soft:#E4F5EF;
  --amber:#E0A03C;
  --amber-soft:#FAF0DC;
  --ink:#14181B;
  --ink-2:#3D4548;
  --ink-3:#6E7679;
  --bg:#F7F6F2;
  --surface:#FFFFFF;
  --surface-2:#F1EFE8;
  --dark:#10171A;
  --line:#E3DFD6;
  --line-dark:rgba(255,255,255,.12);
  --r-sm:8px;
  --r-md:12px;
  --r-lg:16px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,24,27,.05);
  --sh-2:0 10px 28px -14px rgba(20,24,27,.22);
  --sans:-apple-system,"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
  --mono:ui-monospace,"JetBrains Mono","SFMono-Regular",Menlo,Consolas,monospace;
  --pad-section:88px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.85;
  color:var(--ink-2);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;line-height:1.25;}
h1{font-size:clamp(32px,4.4vw,52px);line-height:1.15;letter-spacing:-.01em;}
h2{font-size:clamp(24px,2.6vw,34px);}
h3{font-size:20px;font-weight:600;line-height:1.4;}
p{margin:0;}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--brand);}
button{font-family:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:3px solid var(--brand-soft);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 20px -16px rgba(20,24,27,.45);}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:68px;}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo svg{width:24px;height:24px;flex:0 0 auto;}
.logo-text{font-size:18px;font-weight:700;color:var(--ink);letter-spacing:0;}
.nav-main{display:flex;align-items:center;gap:28px;flex-wrap:nowrap;}
.nav-main a{
  position:relative;
  font-size:14px;color:var(--ink-2);line-height:68px;white-space:nowrap;
  padding:0 0 2px;
}
.nav-main a::after{
  content:"";position:absolute;left:0;right:0;bottom:18px;height:2px;border-radius:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform .18s ease;
}
.nav-main a:hover{color:var(--brand);}
.nav-main a:hover::after,.nav-main a.active::after{transform:scaleX(1);}
.nav-main a.active{color:var(--brand);font-weight:600;}
.nav-right{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.nav-search{
  display:flex;align-items:center;gap:8px;
  width:200px;height:38px;padding:0 14px;
  background:#F3F2ED;border:1px solid transparent;border-radius:var(--r-pill);
  color:var(--ink-3);transition:background .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.nav-search svg{width:16px;height:16px;flex:0 0 auto;}
.nav-search input{
  border:0;background:transparent;outline:none;width:100%;
  font-size:13px;color:var(--ink);font-family:inherit;
}
.nav-search input::placeholder{color:var(--ink-3);}
.nav-search:focus-within{background:#fff;border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;font-family:inherit;
  border:1px solid transparent;cursor:pointer;
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.btn-primary{background:var(--ink);color:#fff;}
.btn-primary:hover{background:var(--brand);color:#fff;}
.btn-primary:active{transform:translateY(1px);}
.btn-brand{background:var(--brand);color:#fff;}
.btn-brand:hover{background:var(--brand-dark);color:#fff;}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line);}
.btn-ghost:hover{background:var(--brand-soft);border-color:var(--brand);color:var(--brand-dark);}
.btn:disabled,.btn[disabled]{opacity:.45;cursor:not-allowed;transform:none;}
.nav-cta{height:40px;padding:0 20px;font-size:14px;border-radius:var(--r-pill);}
.burger{
  display:none;width:42px;height:38px;border:1px solid var(--line);border-radius:var(--r-sm);
  background:#fff;position:relative;cursor:pointer;
}
.burger span,.burger::before,.burger::after{
  content:"";position:absolute;left:11px;right:11px;height:2px;border-radius:2px;background:var(--ink);
  transition:transform .2s ease,opacity .2s ease;
}
.burger span{top:18px;}
.burger::before{top:12px;}
.burger::after{top:24px;}

/* ---------- breadcrumb ---------- */
.breadcrumb{background:#fff;border-bottom:1px solid var(--line);}
.breadcrumb .container{
  display:flex;align-items:center;gap:8px;height:48px;
  font-size:13px;color:var(--ink-3);overflow:hidden;white-space:nowrap;
}
.breadcrumb a{color:var(--ink-3);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{color:#C6C1B6;}
.breadcrumb .current{color:var(--ink);font-weight:600;}

/* ---------- hero ---------- */
.cat-hero{padding:64px 0 72px;background:
  radial-gradient(circle at 88% 12%, rgba(14,158,122,.07), transparent 46%),
  var(--bg);}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:5px 14px;border-radius:var(--r-pill);
  background:var(--brand-soft);color:var(--brand-dark);
  font-size:13px;font-weight:600;letter-spacing:.02em;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand);}
.hero-copy h1{margin-top:20px;max-width:15em;}
.hero-copy h1 em{font-style:normal;color:var(--brand);}
.lede{margin-top:18px;font-size:17px;color:var(--ink-2);max-width:32em;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.stat-strip{
  display:grid;grid-template-columns:repeat(3,1fr);gap:16px;
  margin-top:32px;padding:20px 22px;
  background:var(--surface-2);border-radius:var(--r-md);
}
.stat-strip .stat-num{
  font-family:var(--mono);font-size:24px;font-weight:600;color:var(--ink);line-height:1.2;
}
.stat-strip .stat-num span{font-size:13px;color:var(--ink-3);margin-left:3px;font-weight:400;}
.stat-strip .stat-label{font-size:13px;color:var(--ink-3);line-height:1.6;margin-top:4px;}
.hero-media{position:relative;}
.hero-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-lg);
  border:1px solid rgba(20,24,27,.06);background:#EDEBE4;
}
.media-card{
  position:absolute;right:-14px;bottom:-18px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:14px 18px;box-shadow:var(--sh-2);min-width:190px;
}
.media-card .mc-label{font-size:12px;color:var(--ink-3);letter-spacing:.04em;}
.media-card .mc-num{font-family:var(--mono);font-size:22px;font-weight:600;color:var(--brand-dark);line-height:1.3;}
.media-card .mc-num span{font-size:12px;color:var(--ink-3);font-weight:400;}

/* ---------- generic section ---------- */
.section{padding:var(--pad-section) 0;}
.section-alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:760px;margin-bottom:36px;}
.section-head .kicker{
  font-family:var(--mono);font-size:13px;letter-spacing:.14em;color:var(--brand-dark);
  text-transform:uppercase;display:block;margin-bottom:12px;
}
.section-head p{margin-top:14px;color:var(--ink-2);font-size:16px;}

/* ---------- capability cards ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.svc-card{
  display:flex;flex-direction:column;
  background:var(--surface);border:1px solid var(--line);border-radius:14px;
  padding:24px;box-shadow:var(--sh-1);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.svc-card:hover{transform:translateY(-2px);border-color:var(--brand);box-shadow:var(--sh-2);}
.svc-card .thumb{
  position:relative;border-radius:var(--r-btn);overflow:hidden;
  aspect-ratio:16/9;background:#EDEBE4;margin-bottom:18px;
}
.svc-card .thumb img{width:100%;height:100%;object-fit:cover;}
.svc-card .thumb .tag{
  position:absolute;left:12px;top:12px;
  padding:3px 10px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.94);color:var(--brand-dark);
  font-family:var(--mono);font-size:12px;letter-spacing:.06em;
}
.svc-card h3{font-size:17px;line-height:1.5;}
.svc-card .desc{margin-top:10px;font-size:14px;color:var(--ink-3);line-height:1.75;}
.svc-card .spec-line{
  margin-top:14px;padding-top:12px;border-top:1px dashed var(--line);
  font-family:var(--mono);font-size:12px;color:var(--ink-3);letter-spacing:.02em;
}
.svc-card .arrow-link{
  margin-top:16px;display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--brand-dark);
}
.svc-card .arrow-link svg{width:15px;height:15px;transition:transform .18s ease;}
.svc-card:hover .arrow-link svg{transform:translateX(4px);}

/* ---------- process + checklist ---------- */
.split-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:start;}
.steps{counter-reset:step;display:grid;gap:0;}
.step{
  display:grid;grid-template-columns:56px 1fr;gap:18px;
  padding:22px 0;border-top:1px solid var(--line);
}
.step:first-child{border-top:0;padding-top:0;}
.step .num{
  font-family:var(--mono);font-size:15px;font-weight:600;color:var(--brand-dark);
  background:var(--brand-soft);border-radius:var(--r-sm);
  height:34px;display:flex;align-items:center;justify-content:center;
}
.step h3{font-size:17px;}
.step p{margin-top:8px;font-size:14px;color:var(--ink-3);}
.panel{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:26px;box-shadow:var(--sh-1);
}
.panel h3{font-size:17px;padding-bottom:14px;border-bottom:1px solid var(--line);}
.check-list{margin-top:16px;display:grid;gap:12px;}
.check-list li{
  display:grid;grid-template-columns:18px 1fr;gap:10px;align-items:start;
  font-size:14px;color:var(--ink-2);line-height:1.7;
}
.check-list li::before{
  content:"";width:16px;height:16px;margin-top:5px;border-radius:50%;
  background:var(--brand-soft);
  box-shadow:inset 0 0 0 1px rgba(14,158,122,.35);
  background-image:linear-gradient(var(--brand),var(--brand));
  background-size:8px 2px;background-position:center;background-repeat:no-repeat;
}
.panel .note{margin-top:18px;font-size:13px;color:var(--ink-3);font-family:var(--mono);}

/* ---------- data band ---------- */
.data-band{background:var(--dark);color:rgba(255,255,255,.78);padding:56px 0;}
.data-band .band-head{
  display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:14px;
  padding-bottom:24px;border-bottom:1px solid var(--line-dark);
}
.data-band .band-head h2{color:#fff;font-size:24px;}
.data-band .band-head .stamp{font-family:var(--mono);font-size:13px;color:rgba(255,255,255,.5);}
.metric-row{
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:32px;
}
.metric{border-left:1px solid var(--line-dark);padding-left:20px;}
.metric:first-child{border-left:0;padding-left:0;}
.metric .m-num{font-family:var(--mono);font-size:clamp(26px,3vw,36px);font-weight:600;color:#fff;line-height:1.1;}
.metric .m-num span{font-size:13px;color:rgba(255,255,255,.55);margin-left:4px;}
.metric .m-label{margin-top:8px;font-size:13px;color:rgba(255,255,255,.58);line-height:1.6;}
.tick-row{display:flex;gap:6px;margin-top:32px;opacity:.35;}
.tick-row i{display:block;width:1px;height:12px;background:#fff;}

/* ---------- faq ---------- */
.faq-wrap{max-width:880px;margin:0 auto;}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  margin-bottom:10px;overflow:hidden;transition:border-color .18s ease,box-shadow .18s ease;
}
.faq-item[open]{border-color:var(--brand);box-shadow:var(--sh-1);}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 24px;font-size:16px;font-weight:600;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";flex:0 0 auto;font-family:var(--mono);font-size:20px;font-weight:400;
  color:var(--brand-dark);line-height:1;transition:transform .2s ease;
}
.faq-item[open] summary::after{transform:rotate(45deg);}
.faq-item .faq-body{padding:0 24px 22px;font-size:15px;line-height:1.9;color:var(--ink-3);}

/* ---------- cta band ---------- */
.cta-band{background:var(--dark);color:#fff;padding:56px 0;}
.cta-inner{
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-inner h2{color:#fff;font-size:clamp(22px,2.4vw,30px);max-width:22em;}
.cta-inner p{margin-top:12px;color:rgba(255,255,255,.62);font-size:15px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}
.btn-light{background:#fff;color:var(--ink);}
.btn-light:hover{background:var(--brand);color:#fff;}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.32);color:#fff;}
.btn-outline-light:hover{background:rgba(255,255,255,.1);border-color:#fff;color:#fff;}

/* ---------- footer ---------- */
.site-footer{background:var(--dark);color:rgba(255,255,255,.72);padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;}
.f-brand .logo-text{color:#fff;}
.f-brand p{margin-top:16px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.6);max-width:26em;}
.f-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px;}
.f-tags span{
  font-size:12px;padding:4px 12px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.07);color:rgba(255,255,255,.72);
}
.f-col h4{font-size:14px;color:#fff;letter-spacing:.04em;margin-bottom:16px;}
.f-col a{display:block;font-size:14px;line-height:2;color:rgba(255,255,255,.68);}
.f-col a:hover{color:var(--brand);}
.f-contact div{font-family:var(--mono);font-size:15px;color:#fff;margin-bottom:6px;}
.f-contact span{display:block;font-size:13px;color:rgba(255,255,255,.5);margin-bottom:14px;}
.footer-bottom{
  margin-top:48px;padding:22px 0;
  border-top:1px solid var(--line-dark);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  font-size:13px;color:rgba(255,255,255,.5);
}
.footer-links{display:flex;flex-wrap:wrap;gap:18px;}
.footer-links a{color:rgba(255,255,255,.6);}
.footer-links a:hover{color:var(--brand);}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .hero-grid{gap:36px;}
  .media-card{right:0;}
}
@media (max-width:1023px){
  :root{--pad-section:64px;}
  .nav-main{gap:20px;}
  .nav-main a{font-size:13px;}
  .nav-search{width:160px;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero-media img{aspect-ratio:16/9;}
  .media-card{position:static;margin-top:16px;box-shadow:var(--sh-1);width:100%;}
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .split-grid{grid-template-columns:1fr;gap:32px;}
  .metric-row{grid-template-columns:repeat(2,1fr);gap:28px;}
  .metric:nth-child(3){border-left:0;padding-left:0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:900px){
  .nav-main{
    display:none;
    position:fixed;left:0;right:0;top:68px;
    background:#fff;border-bottom:1px solid var(--line);
    padding:8px 24px 20px;box-shadow:0 18px 30px -24px rgba(20,24,27,.5);
    flex-direction:column;align-items:stretch;gap:0;
  }
  .nav-main a{line-height:52px;font-size:15px;border-bottom:1px solid var(--line);}
  .nav-main a::after{display:none;}
  .nav-main a.active{color:var(--brand);}
  body.nav-open .nav-main{display:flex;}
  .burger{display:block;}
  body.nav-open .burger span{opacity:0;}
  body.nav-open .burger::before{transform:translateY(6px) rotate(45deg);}
  body.nav-open .burger::after{transform:translateY(-6px) rotate(-45deg);}
}
@media (max-width:767px){
  :root{--pad-section:48px;}
  .container{padding:0 18px;}
  .nav-search{display:none;}
  .cat-hero{padding:40px 0 48px;}
  .hero-copy h1{font-size:clamp(28px,7vw,38px);}
  .hero-actions .btn{width:100%;}
  .stat-strip{grid-template-columns:1fr;gap:14px;padding:18px;}
  .card-grid{grid-template-columns:1fr;}
  .metric-row{grid-template-columns:1fr 1fr;gap:22px;}
  .metric{border-left:0;padding-left:0;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .step{grid-template-columns:44px 1fr;gap:14px;}
}
@media (max-width:480px){
  .container{padding:0 16px;}
  .logo-text{font-size:16px;}
  .nav-cta{height:36px;padding:0 14px;font-size:13px;}
  .hero-copy h1{font-size:26px;}
  .lede{font-size:15px;}
  .tick-row{display:none;}
  .section-head p{font-size:15px;}
  .panel{padding:20px;}
  .faq-item summary{padding:16px 18px;font-size:15px;}
  .faq-item .faq-body{padding:0 18px 18px;}
}

/* roulang page: article */
:root{
  --brand:#0E9E7A;
  --brand-deep:#0A6E56;
  --brand-soft:#E4F5EF;
  --ink:#14181B;
  --text:#3D4548;
  --muted:#6E7679;
  --amber:#E0A03C;
  --amber-soft:#FAF0DC;
  --bg:#F7F6F2;
  --surface:#FFFFFF;
  --soft:#F1EFE8;
  --dark:#10171A;
  --line:#E3DFD6;
  --line-soft:rgba(20,24,27,.06);
  --r-sm:8px;
  --r-md:12px;
  --r-lg:16px;
  --r-btn:10px;
  --shadow-1:0 1px 2px rgba(20,24,27,.05);
  --shadow-2:0 10px 28px -14px rgba(20,24,27,.22);
  --mono:ui-monospace,"JetBrains Mono","SFMono-Regular",Menlo,Consolas,monospace;
  --sans:-apple-system,"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
  --gap:20px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:var(--sans);font-size:16px;line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .18s ease}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;color:var(--ink);line-height:1.25}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:3px solid var(--brand-soft);outline-offset:2px;border-radius:4px}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:28px}
.section-head h2{font-size:clamp(24px,2.6vw,34px);font-weight:700}
.section-head .sub{color:var(--muted);font-size:14px;margin-top:8px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;color:var(--brand-deep);background:var(--brand-soft);
  border-radius:999px;padding:4px 12px;font-weight:600;
}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--ink);color:#fff}
.btn-primary:hover{background:var(--brand);color:#fff;box-shadow:var(--shadow-2)}
.btn-primary:active{background:var(--brand-deep);transform:translateY(1px)}
.btn-brand{background:var(--brand);color:#fff}
.btn-brand:hover{background:var(--brand-deep);box-shadow:var(--shadow-2)}
.btn-brand:active{transform:translateY(1px)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{background:var(--brand-soft);border-color:var(--brand);color:var(--brand-deep)}
.btn-ghost:active{transform:translateY(1px)}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;box-shadow:none;transform:none}
.btn-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand-deep)}
.btn-link span.arrow{transition:transform .18s ease}
.btn-link:hover span.arrow{transform:translateX(4px)}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:100;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow .2s ease}
.site-header.scrolled{box-shadow:0 8px 24px -16px rgba(20,24,27,.45)}
.nav-wrap{display:flex;align-items:center;gap:24px;height:68px}
.logo{display:inline-flex;align-items:center;gap:10px;flex:none}
.logo svg{width:26px;height:26px;flex:none}
.logo-text{font-size:18px;font-weight:700;color:var(--ink);letter-spacing:0;line-height:1}
.nav-main{display:flex;align-items:center;gap:28px;margin:0 auto}
.nav-main a{font-size:14px;color:var(--text);padding:6px 0;position:relative;font-weight:500}
.nav-main a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--brand);
  transform:scaleX(0);transform-origin:left;transition:transform .18s ease;
}
.nav-main a:hover{color:var(--brand-deep)}
.nav-main a:hover::after{transform:scaleX(1)}
.nav-main a.active{color:var(--brand-deep);font-weight:600}
.nav-main a.active::after{transform:scaleX(1)}
.nav-right{display:flex;align-items:center;gap:14px;flex:none}
.nav-search{
  display:flex;align-items:center;gap:8px;width:200px;height:38px;
  background:#F3F2ED;border:1px solid transparent;border-radius:999px;padding:0 14px;
  transition:background .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.nav-search svg{width:16px;height:16px;color:var(--muted);flex:none}
.nav-search input{border:0;background:transparent;outline:none;font-size:13px;width:100%;color:var(--ink);font-family:inherit}
.nav-search input::placeholder{color:var(--muted)}
.nav-search:focus-within{background:#fff;border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft)}
.nav-cta{height:40px;padding:0 18px;font-size:14px}
.burger{
  display:none;width:40px;height:40px;border:1px solid var(--line);background:#fff;
  border-radius:var(--r-sm);position:relative;cursor:pointer;
}
.burger span,.burger span::before,.burger span::after{
  position:absolute;left:50%;width:18px;height:2px;background:var(--ink);border-radius:2px;
  transition:transform .2s ease,opacity .2s ease;content:"";
}
.burger span{top:19px;transform:translateX(-50%)}
.burger span::before{top:-6px;transform:translateX(-50%);left:50%}
.burger span::after{top:6px;transform:translateX(-50%);left:50%}
body.menu-open .burger span{background:transparent}
body.menu-open .burger span::before{transform:translateX(-50%) rotate(45deg);top:0}
body.menu-open .burger span::after{transform:translateX(-50%) rotate(-45deg);top:0}

/* ---------- breadcrumb ---------- */
.breadcrumb{background:#fff;border-bottom:1px solid var(--line)}
.breadcrumb .container{display:flex;align-items:center;gap:8px;height:48px;font-size:13px;color:var(--muted);overflow:hidden}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--brand-deep)}
.breadcrumb .sep{color:#C7C2B6}
.breadcrumb .current{color:var(--ink);font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:52ch}

/* ---------- article ---------- */
.article-section{padding:48px 0 72px}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 240px;gap:56px;align-items:start}
.article-main{min-width:0}
.article-head{max-width:780px}
.badge{display:inline-flex;align-items:center;gap:6px;border-radius:999px;padding:4px 12px;font-size:13px;font-weight:600;background:var(--brand-soft);color:var(--brand-deep)}
.badge-amber{background:var(--amber-soft);color:#8A5D12}
.article-title{
  font-size:clamp(28px,3.2vw,40px);font-weight:700;line-height:1.28;
  margin:16px 0 0;color:var(--ink);
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  margin-top:20px;font-size:13px;color:var(--muted);
}
.article-meta .divider{width:1px;height:12px;background:var(--line)}
.share-group{display:flex;align-items:center;gap:8px;margin-left:auto}
.share-btn{
  height:32px;padding:0 12px;border-radius:999px;border:1px solid var(--line);
  background:#fff;color:var(--text);font-size:12px;cursor:pointer;
  transition:border-color .18s ease,color .18s ease,background .18s ease;
}
.share-btn:hover{border-color:var(--brand);color:var(--brand-deep);background:var(--brand-soft)}
.article-cover{
  margin:28px 0 0;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line-soft);
  background:#EDEBE4;aspect-ratio:16/9;max-width:780px;
}
.article-cover img{width:100%;height:100%;object-fit:cover}
.article-body{max-width:780px;margin-top:36px;font-size:17px;line-height:1.95;color:var(--text)}
.article-body > * + *{margin-top:1.2em}
.article-body p{margin:0}
.article-body h2{
  position:relative;font-size:24px;font-weight:700;color:var(--ink);
  margin:40px 0 16px;padding-left:14px;
}
.article-body h2::before{content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:3px;border-radius:2px;background:var(--brand)}
.article-body h3{font-size:19px;font-weight:600;color:var(--ink);margin:28px 0 12px}
.article-body h4{font-size:16px;font-weight:600;color:var(--ink);margin:22px 0 10px}
.article-body a{color:var(--brand-deep);border-bottom:1px solid rgba(14,158,122,.35)}
.article-body a:hover{color:var(--brand);border-bottom-color:var(--brand)}
.article-body strong{color:var(--ink);font-weight:600}
.article-body ul,.article-body ol{padding-left:1.4em;list-style:revert}
.article-body li{margin:.4em 0;line-height:1.8}
.article-body blockquote{
  margin:24px 0;padding:20px 22px;background:var(--soft);
  border-left:3px solid var(--brand);border-radius:0 var(--r-md) var(--r-md) 0;
  color:var(--text);font-size:16px;
}
.article-body img{border-radius:var(--r-md);margin:24px auto;border:1px solid var(--line-soft)}
.article-body figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:8px}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;margin:24px 0}
.article-body th{background:var(--soft);color:var(--ink);font-weight:600;text-align:left;padding:12px;border-bottom:1px solid var(--line)}
.article-body td{padding:12px;border-bottom:1px solid var(--line);vertical-align:top}
.article-body td.mono,.article-body code{font-family:var(--mono);font-size:14px}
.article-body code{background:var(--soft);padding:2px 6px;border-radius:6px;color:var(--brand-deep)}
.table-wrap{overflow-x:auto;margin:24px 0;border:1px solid var(--line);border-radius:var(--r-md);background:#fff}
.table-wrap table{margin:0}
.article-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:40px;max-width:780px}
.article-tags .tag{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:999px;
  background:#fff;border:1px solid var(--line);font-size:13px;color:var(--text);
  transition:border-color .18s ease,color .18s ease,background .18s ease;
}
.article-tags .tag:hover{border-color:var(--brand);color:var(--brand-deep);background:var(--brand-soft)}
.article-foot{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;max-width:780px}

/* empty state */
.empty-state{
  max-width:780px;margin-top:36px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-lg);padding:40px 24px;text-align:center;
}
.empty-state .ico{width:40px;height:40px;margin:0 auto 14px;color:var(--muted)}
.empty-state p{color:var(--muted);font-size:15px;margin-bottom:18px}

/* ---------- sidebar ---------- */
.article-side{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px}
.toc-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:20px;box-shadow:var(--shadow-1)}
.toc-title{font-size:13px;font-weight:700;color:var(--ink);letter-spacing:.04em;margin-bottom:12px}
.toc-card ol{display:flex;flex-direction:column;gap:2px}
.toc-card a{
  display:block;font-size:13px;line-height:1.6;color:var(--muted);
  padding:6px 0 6px 12px;border-left:2px solid transparent;
  transition:color .18s ease,border-color .18s ease;
}
.toc-card a:hover{color:var(--brand-deep)}
.toc-card a.active{color:var(--brand-deep);font-weight:600;border-left-color:var(--brand)}
.side-card{background:var(--dark);color:#D8DDDC;border-radius:var(--r-lg);padding:22px}
.side-card h3{color:#fff;font-size:16px;margin-bottom:10px}
.side-card p{font-size:13px;line-height:1.8;color:#9FA8A7;margin-bottom:16px}
.side-card .btn{width:100%}

/* ---------- related ---------- */
.related{background:var(--soft);padding:72px 0}
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap)}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:14px;
  padding:24px;display:flex;flex-direction:column;gap:12px;
  transition:border-color .18s ease,box-shadow .18s ease,transform .18s ease;
}
.card:hover{border-color:var(--brand);box-shadow:var(--shadow-2);transform:translateY(-2px)}
.card .thumb{aspect-ratio:16/9;border-radius:10px;overflow:hidden;background:#EDEBE4;border:1px solid var(--line-soft)}
.card .thumb img{width:100%;height:100%;object-fit:cover}
.card h3{font-size:16px;font-weight:600;line-height:1.5}
.card p{font-size:14px;color:var(--muted);line-height:1.75}
.card .card-foot{display:flex;align-items:center;justify-content:space-between;margin-top:auto;font-size:13px;color:var(--muted)}
.card .card-foot .mono{font-family:var(--mono)}

/* ---------- prev next ---------- */
.prevnext{padding:0 0 72px}
.prevnext-grid{display:grid;grid-template-columns:1fr 1fr;gap:var(--gap)}
.pn-item{
  display:flex;flex-direction:column;gap:6px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-md);padding:20px 22px;transition:border-color .18s ease,background .18s ease;
}
.pn-item span{font-size:12px;color:var(--muted);font-family:var(--mono);letter-spacing:.04em}
.pn-item strong{font-size:15px;color:var(--ink);font-weight:600}
.pn-item:hover{border-color:var(--brand);background:#FBFCFA}
.pn-item:hover strong{color:var(--brand-deep)}
.pn-item.right{text-align:right;align-items:flex-end}

/* ---------- faq ---------- */
.faq-wrap{max-width:880px;margin:0 auto}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  margin-bottom:10px;overflow:hidden;transition:border-color .18s ease,box-shadow .18s ease;
}
.faq-item[open]{border-color:var(--brand);box-shadow:var(--shadow-1)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;
  gap:16px;padding:20px 24px;font-size:16px;font-weight:600;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";font-family:var(--mono);font-size:20px;color:var(--brand-deep);
  line-height:1;transition:transform .2s ease;flex:none;
}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item .faq-body{padding:0 24px 22px;font-size:15px;line-height:1.9;color:var(--muted)}

/* ---------- cta band ---------- */
.cta-band{background:var(--dark);color:#E7EBEA;padding:64px 0}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:40px}
.cta-inner h2{color:#fff;font-size:clamp(24px,2.6vw,32px);font-weight:700}
.cta-inner p{margin-top:12px;font-size:15px;color:#9FA8A7;max-width:56ch}
.cta-actions{display:flex;flex-direction:column;gap:12px;flex:none}
.cta-actions .btn-ghost{color:#fff;border-color:rgba(255,255,255,.28)}
.cta-actions .btn-ghost:hover{background:rgba(255,255,255,.1);color:#fff;border-color:#fff}
.cta-meta{display:flex;gap:20px;margin-top:22px;font-family:var(--mono);font-size:13px;color:#8FE3CB;flex-wrap:wrap}

/* ---------- footer ---------- */
.site-footer{background:var(--dark);color:#B9C0BF;padding:64px 0 0;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:44px}
.f-brand .logo{margin-bottom:16px}
.f-brand .logo-text{color:#fff}
.f-brand p{font-size:13px;line-height:1.9;color:#98A1A0;max-width:30ch}
.f-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.f-tags span{font-size:12px;color:#8FE3CB;background:rgba(14,158,122,.14);border:1px solid rgba(143,227,203,.22);border-radius:999px;padding:3px 10px}
.f-col h4{font-size:14px;color:#fff;margin-bottom:14px;font-weight:600}
.f-col a{display:block;font-size:14px;color:#B9C0BF;padding:5px 0}
.f-col a:hover{color:#8FE3CB}
.f-contact div{color:#fff;font-family:var(--mono);font-size:14px;margin-bottom:2px}
.f-contact span{display:block;font-size:12px;color:#8B9492;margin-bottom:12px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:20px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#8B9492;
}
.footer-links{display:flex;flex-wrap:wrap;gap:18px}
.footer-links a{color:#B9C0BF}
.footer-links a:hover{color:#8FE3CB}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .article-layout{grid-template-columns:minmax(0,1fr)}
  .article-side{display:none}
  .article-head,.article-body,.article-cover,.article-tags,.article-foot,.empty-state{max-width:100%}
}
@media (max-width:1024px){
  .nav-main{gap:18px}
  .nav-search{width:150px}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px}
  .f-contact{grid-column:span 3}
  .section{padding:64px 0}
}
@media (max-width:900px){
  .nav-main{
    position:fixed;top:68px;left:0;right:0;bottom:0;background:#fff;z-index:90;
    flex-direction:column;align-items:stretch;gap:0;padding:12px 24px 32px;margin:0;
    display:none;overflow-y:auto;
  }
  body.menu-open .nav-main{display:flex}
  .nav-main a{padding:14px 0;font-size:16px;border-bottom:1px solid var(--line);line-height:1.4}
  .nav-main a::after{display:none}
  .nav-main a.active{color:var(--brand-deep)}
  .nav-search{display:none}
  .burger{display:block}
  .card-grid{grid-template-columns:repeat(2,1fr)}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:28px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .related{padding:56px 0}
  .prevnext-grid{grid-template-columns:1fr}
  .pn-item.right{text-align:left;align-items:flex-start}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .section{padding:48px 0}
  .article-section{padding:32px 0 56px}
  .article-body{font-size:16px;line-height:1.9}
  .article-body h2{font-size:21px;margin-top:32px}
  .article-title{font-size:clamp(24px,6vw,30px)}
  .share-group{margin-left:0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .f-brand{grid-column:span 2}
  .f-contact{grid-column:span 2}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px}
  .cta-band{padding:48px 0}
  .article-cover{aspect-ratio:16/10}
}
@media (max-width:520px){
  .nav-cta{display:none}
  .card-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .f-brand,.f-contact{grid-column:span 1}
  .article-meta{gap:8px;font-size:12px}
  .btn{width:100%}
  .article-foot .btn{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
}

/* roulang page: category2 */
:root{
  --brand:#0E9E7A;
  --brand-dark:#0A6E56;
  --brand-soft:#E4F5EF;
  --amber:#E0A03C;
  --amber-soft:#FAF0DC;
  --ink:#14181B;
  --ink-2:#3D4548;
  --muted:#6E7679;
  --bg:#F7F6F2;
  --surface:#FFFFFF;
  --surface-2:#F1EFE8;
  --dark:#10171A;
  --border:#E3DFD6;
  --radius-sm:8px;
  --radius:12px;
  --radius-lg:16px;
  --shadow-1:0 1px 2px rgba(20,24,27,.05);
  --shadow-2:0 10px 28px -14px rgba(20,24,27,.22);
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
  --mono:ui-monospace,"JetBrains Mono","SFMono-Regular",Menlo,Consolas,monospace;
  --gutter:24px;
  --section-y:88px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--ink-2);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;line-height:1.25}
p{margin:0}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button{font-family:inherit}
input,select,textarea{font-family:inherit;font-size:inherit}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:3px solid var(--brand-soft);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 var(--gutter)}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:90;
  background:#fff;
  border-bottom:1px solid var(--border);
  transition:box-shadow .18s ease;
}
.site-header.scrolled{box-shadow:0 6px 20px -16px rgba(20,24,27,.5)}
.nav-wrap{display:flex;align-items:center;gap:28px;height:68px}
.logo{display:inline-flex;align-items:center;gap:9px;flex:0 0 auto}
.logo svg{width:24px;height:24px;flex:0 0 24px}
.logo-text{font-size:18px;font-weight:700;color:var(--ink);letter-spacing:0}
.nav-main{display:flex;align-items:center;gap:28px;margin-left:8px;flex:1 1 auto}
.nav-main a{
  position:relative;font-size:14px;color:var(--ink-2);padding:6px 0;white-space:nowrap;
  transition:color .16s ease;
}
.nav-main a::after{
  content:"";position:absolute;left:0;right:0;bottom:-6px;height:2px;background:var(--brand);
  transform:scaleX(0);transform-origin:left;transition:transform .18s ease;
}
.nav-main a:hover{color:var(--brand)}
.nav-main a:hover::after,.nav-main a.active::after{transform:scaleX(1)}
.nav-main a.active{color:var(--brand);font-weight:600}
.nav-right{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.nav-search{
  display:flex;align-items:center;gap:8px;
  height:38px;padding:0 14px;width:200px;
  background:#F3F2ED;border:1px solid transparent;border-radius:999px;
  color:var(--muted);transition:background .16s ease,border-color .16s ease,box-shadow .16s ease;
}
.nav-search svg{width:16px;height:16px;flex:0 0 16px}
.nav-search input{
  border:0;background:transparent;outline:none;width:100%;font-size:13px;color:var(--ink);
}
.nav-search input::placeholder{color:var(--muted)}
.nav-search:focus-within{background:#fff;border-color:var(--brand);box-shadow:0 0 0 2px var(--brand-soft)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:10px;border:1px solid transparent;
  font-size:14px;font-weight:600;cursor:pointer;
  transition:background .18s ease,color .18s ease,border-color .18s ease,box-shadow .18s ease,transform .18s ease;
}
.btn-primary{background:var(--ink);color:#fff}
.btn-primary:hover{background:var(--brand)}
.btn-primary:active{transform:translateY(1px)}
.btn-brand{background:var(--brand);color:#fff}
.btn-brand:hover{background:var(--brand-dark)}
.btn-ghost{background:transparent;border-color:var(--border);color:var(--ink)}
.btn-ghost:hover{background:var(--brand-soft);border-color:var(--brand);color:var(--brand-dark)}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.45;cursor:not-allowed;transform:none}
.nav-cta{height:40px;padding:0 20px;border-radius:999px;font-size:14px}
.burger{
  display:none;width:42px;height:42px;border:1px solid var(--border);border-radius:10px;background:#fff;
  align-items:center;justify-content:center;cursor:pointer;
}
.burger span{position:relative;display:block;width:18px;height:2px;background:var(--ink);border-radius:2px}
.burger span::before,.burger span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px;
  transition:transform .2s ease,top .2s ease;
}
.burger span::before{top:-6px}
.burger span::after{top:6px}

/* ---------- breadcrumb ---------- */
.crumb-bar{background:#fff;border-bottom:1px solid var(--border)}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;height:48px;font-size:13px;color:var(--muted)}
.crumb a:hover{color:var(--brand)}
.crumb .sep{color:#C7C2B6}
.crumb .cur{color:var(--ink);font-weight:600}

/* ---------- hero ---------- */
.cat-hero{
  position:relative;overflow:hidden;
  background:
    linear-gradient(180deg,rgba(247,246,242,.94) 0%,rgba(247,246,242,.98) 100%),
    url("/assets/images/backpic/back-1.webp") center/cover no-repeat;
  border-bottom:1px solid var(--border);
}
.cat-hero::after{
  content:"";position:absolute;inset:auto 0 0 0;height:1px;
  background:repeating-linear-gradient(90deg,rgba(20,24,27,.16) 0 12px,transparent 12px 26px);
  opacity:.5;
}
.cat-hero .container{padding-top:64px;padding-bottom:56px}
.pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:4px 12px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand-dark);
  font-size:13px;font-weight:600;
}
.pill-dot{width:6px;height:6px;border-radius:50%;background:var(--brand)}
.cat-hero h1{
  margin-top:18px;
  font-size:clamp(32px,4.4vw,52px);line-height:1.15;letter-spacing:-.01em;
  max-width:900px;
}
.cat-hero h1 .hi{color:var(--brand)}
.cat-hero .lead{
  margin-top:16px;max-width:720px;font-size:17px;line-height:1.9;color:var(--ink-2);
}
.metric-strip{
  margin-top:32px;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;
  max-width:820px;
}
.metric{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  padding:18px 20px;box-shadow:var(--shadow-1);
}
.metric .num{
  font-family:var(--mono);font-size:clamp(24px,2.6vw,32px);font-weight:600;color:var(--ink);line-height:1;
}
.metric .num small{font-size:13px;font-weight:500;color:var(--muted);margin-left:4px}
.metric .cap{margin-top:10px;font-size:13px;color:var(--muted);line-height:1.6}

/* ---------- section base ---------- */
.section{padding:var(--section-y) 0}
.section-alt{background:var(--surface-2)}
.sec-head{max-width:760px}
.sec-head h2{font-size:clamp(24px,2.6vw,34px);margin-top:12px}
.sec-head p{margin-top:14px;font-size:16px;color:var(--ink-2)}

/* ---------- alternating rows ---------- */
.alt-list{display:flex;flex-direction:column;gap:48px;margin-top:48px}
.alt-row{
  display:grid;grid-template-columns:5fr 7fr;gap:44px;align-items:center;
}
.alt-row.rev .alt-figure{order:2}
.alt-figure{position:relative;border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--border);box-shadow:var(--shadow-1);background:#EDEBE4}
.alt-figure img{width:100%;aspect-ratio:4/3;object-fit:cover}
.alt-figure .tag{
  position:absolute;left:14px;top:14px;
  padding:4px 12px;border-radius:999px;background:#fff;color:var(--ink);
  font-size:13px;font-weight:600;box-shadow:var(--shadow-1);
}
.alt-body .idx{
  font-family:var(--mono);font-size:13px;font-weight:600;color:var(--amber);
  letter-spacing:.12em;
}
.alt-body h3{margin-top:10px;font-size:22px;line-height:1.4}
.alt-body ul{margin-top:16px;display:flex;flex-direction:column;gap:10px}
.alt-body li{position:relative;padding-left:20px;font-size:15px;color:var(--ink-2);line-height:1.8}
.alt-body li::before{
  content:"";position:absolute;left:0;top:.72em;width:8px;height:2px;background:var(--brand);border-radius:2px;
}
.link-arrow{
  display:inline-flex;align-items:center;gap:8px;margin-top:20px;
  font-size:14px;font-weight:600;color:var(--brand-dark);
}
.link-arrow span{transition:transform .18s ease}
.link-arrow:hover span{transform:translateX(4px)}
.link-arrow:hover{color:var(--brand)}

/* ---------- compare ---------- */
.compare-card{
  margin-top:40px;background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius-lg);padding:32px;box-shadow:var(--shadow-1);
}
.compare-item{padding:20px 0;border-bottom:1px dashed var(--border)}
.compare-item:last-child{border-bottom:0;padding-bottom:4px}
.compare-item:first-child{padding-top:4px}
.cmp-top{display:flex;justify-content:space-between;align-items:baseline;gap:16px;flex-wrap:wrap}
.cmp-top h4{font-size:16px;font-weight:600}
.cmp-top .unit{font-size:13px;color:var(--muted)}
.bar-row{display:flex;align-items:center;gap:14px;margin-top:12px}
.bar-label{flex:0 0 76px;font-size:13px;color:var(--muted)}
.bar-track{flex:1 1 auto;height:12px;background:var(--surface-2);border-radius:999px;overflow:hidden}
.bar-fill{height:100%;border-radius:999px;background:#CFCABD}
.bar-fill.after{background:var(--brand)}
.bar-val{flex:0 0 84px;text-align:right;font-family:var(--mono);font-size:14px;font-weight:600;color:var(--ink)}
.bar-val.after{color:var(--brand-dark)}
.cmp-note{margin-top:22px;font-size:13px;color:var(--muted);line-height:1.75}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:880px;margin:40px auto 0}
.faq-item{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  margin-bottom:10px;overflow:hidden;transition:border-color .18s ease,box-shadow .18s ease;
}
.faq-item[open]{border-color:var(--brand);box-shadow:var(--shadow-2)}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;cursor:pointer;list-style:none;
  font-size:16px;font-weight:600;color:var(--ink);line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-icon{
  flex:0 0 24px;width:24px;height:24px;border-radius:50%;
  background:var(--brand-soft);color:var(--brand-dark);
  display:flex;align-items:center;justify-content:center;
  font-size:16px;font-weight:600;line-height:1;
  transition:transform .2s ease,background .2s ease;
}
.faq-item[open] .faq-icon{transform:rotate(45deg);background:var(--brand);color:#fff}
.faq-item .faq-body{padding:0 24px 22px;font-size:15px;line-height:1.9;color:var(--ink-2)}
.faq-item summary:hover{color:var(--brand-dark)}

/* ---------- CTA band ---------- */
.cta-band{background:var(--dark);color:#fff;position:relative;overflow:hidden}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:repeating-linear-gradient(90deg,rgba(255,255,255,.06) 0 1px,transparent 1px 68px);
  opacity:.6;pointer-events:none;
}
.cta-band .container{position:relative;padding-top:56px;padding-bottom:56px}
.cta-flex{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-flex h2{color:#fff;font-size:clamp(22px,2.4vw,30px);line-height:1.35}
.cta-flex p{margin-top:12px;font-size:15px;color:rgba(255,255,255,.72);max-width:620px;line-height:1.8}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}
.btn-light{background:#fff;color:var(--ink)}
.btn-light:hover{background:var(--brand);color:#fff}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.32);color:#fff}
.btn-outline-light:hover{background:rgba(255,255,255,.1);border-color:#fff}
.cta-meta{margin-top:22px;display:flex;gap:24px;flex-wrap:wrap;font-family:var(--mono);font-size:13px;color:rgba(255,255,255,.55)}

/* ---------- footer ---------- */
.site-footer{background:var(--dark);color:rgba(255,255,255,.72);padding-top:64px}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;
  padding-bottom:44px;border-bottom:1px solid rgba(255,255,255,.12);
}
.site-footer .logo-text{color:#fff}
.f-brand p{margin-top:16px;font-size:14px;line-height:1.9;color:rgba(255,255,255,.62);max-width:300px}
.f-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.f-tags span{
  font-size:12px;padding:3px 10px;border-radius:999px;
  background:rgba(255,255,255,.08);color:rgba(255,255,255,.78);
}
.f-col h4{font-size:14px;color:#fff;margin:0 0 16px;font-weight:600;letter-spacing:.02em}
.f-col a{display:block;font-size:14px;line-height:2;color:rgba(255,255,255,.66);transition:color .16s ease}
.f-col a:hover{color:#8FE3CB}
.f-contact div{font-size:14px;color:rgba(255,255,255,.82);font-family:var(--mono);margin-bottom:4px}
.f-contact span{display:block;font-size:13px;color:rgba(255,255,255,.5);line-height:1.9;margin-bottom:12px}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  padding:22px 0 30px;font-size:13px;color:rgba(255,255,255,.48);
}
.footer-links{display:flex;gap:20px;flex-wrap:wrap}
.footer-links a{color:rgba(255,255,255,.56)}
.footer-links a:hover{color:#8FE3CB}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .nav-main{gap:22px}
  .nav-search{width:170px}
}
@media (max-width:1023px){
  :root{--section-y:64px}
  .nav-search{display:none}
  .nav-main{gap:18px}
  .alt-row{grid-template-columns:1fr 1fr;gap:28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .cat-hero .container{padding-top:52px;padding-bottom:44px}
}
@media (max-width:767px){
  :root{--section-y:48px;--gutter:18px}
  .nav-main{
    position:fixed;left:0;right:0;top:68px;bottom:0;
    display:none;flex-direction:column;align-items:stretch;gap:0;margin:0;
    background:#fff;padding:16px 18px 40px;overflow-y:auto;border-top:1px solid var(--border);
  }
  body.nav-open .nav-main{display:flex}
  .nav-main a{padding:14px 4px;font-size:15px;border-bottom:1px solid var(--surface-2);line-height:1.6}
  .nav-main a::after{display:none}
  .nav-main a.active{background:var(--brand-soft);border-radius:8px;padding-left:12px;border-bottom-color:transparent}
  .burger{display:inline-flex}
  .nav-cta{height:38px;padding:0 16px;font-size:13px}
  .metric-strip{grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}
  .metric{padding:14px 12px}
  .alt-list{gap:36px;margin-top:32px}
  .alt-row,.alt-row.rev{grid-template-columns:1fr;gap:20px}
  .alt-row.rev .alt-figure{order:0}
  .alt-body h3{font-size:19px}
  .compare-card{padding:22px 18px}
  .bar-label{flex:0 0 60px;font-size:12px}
  .bar-val{flex:0 0 68px;font-size:13px}
  .faq-item summary{padding:16px 18px;font-size:15px}
  .faq-item .faq-body{padding:0 18px 18px}
  .cta-band .container{padding-top:44px;padding-bottom:44px}
  .cta-flex{flex-direction:column;align-items:flex-start}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:26px;padding-bottom:32px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:12px}
  .cat-hero h1{font-size:clamp(26px,7vw,34px)}
  .cat-hero .lead{font-size:15px}
}
@media (max-width:480px){
  :root{--gutter:16px}
  .metric-strip{grid-template-columns:repeat(2,minmax(0,1fr))}
  .metric .num{font-size:22px}
  .cat-hero .container{padding-top:40px;padding-bottom:36px}
  .logo-text{font-size:16px}
  .btn{height:44px;padding:0 18px;font-size:14px}
}

/* roulang page: category3 */
:root{
  --brand:#0E9E7A;
  --brand-dark:#0A6E56;
  --brand-soft:#E4F5EF;
  --ink:#14181B;
  --ink-2:#3D4548;
  --muted:#6E7679;
  --amber:#E0A03C;
  --amber-soft:#FAF0DC;
  --bg:#F7F6F2;
  --surface:#FFFFFF;
  --alt:#F1EFE8;
  --dark:#10171A;
  --line:#E3DFD6;
  --line-dark:rgba(255,255,255,.12);
  --r-sm:8px;
  --r-md:12px;
  --r-lg:16px;
  --r-btn:10px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(20,24,27,.05);
  --shadow-2:0 10px 28px -14px rgba(20,24,27,.22);
  --mono:ui-monospace,"JetBrains Mono",SFMono-Regular,Menlo,Consolas,"Courier New",monospace;
  --sans:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color 180ms ease}
a:hover{color:var(--brand)}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;color:var(--ink);letter-spacing:-.01em}
h1{font-size:clamp(30px,4.2vw,50px);line-height:1.15;font-weight:700}
h2{font-size:clamp(23px,2.6vw,33px);line-height:1.25;font-weight:700}
h3{font-size:20px;line-height:1.4;font-weight:600}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
svg{display:block}
:focus-visible{outline:3px solid rgba(14,158,122,.35);outline-offset:2px;border-radius:4px}

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

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow 200ms ease;
}
.site-header.scrolled{box-shadow:0 6px 20px -14px rgba(20,24,27,.45)}
.nav-wrap{display:flex;align-items:center;gap:26px;height:68px}
.logo{display:inline-flex;align-items:center;gap:9px;flex:none}
.logo svg{width:24px;height:24px}
.logo-text{font-size:18px;font-weight:700;letter-spacing:0;color:var(--ink)}
.logo:hover .logo-text{color:var(--ink)}
.nav-main{display:flex;align-items:center;gap:26px;margin-left:8px}
.nav-main a{
  position:relative;
  font-size:14px;color:var(--ink-2);padding:6px 0;white-space:nowrap;
}
.nav-main a::after{
  content:"";position:absolute;left:0;right:0;bottom:-19px;height:2px;
  background:var(--brand);opacity:0;transition:opacity 180ms ease;
}
.nav-main a:hover{color:var(--brand)}
.nav-main a:hover::after{opacity:.5}
.nav-main a.active{color:var(--brand);font-weight:600}
.nav-main a.active::after{opacity:1}
.nav-right{display:flex;align-items:center;gap:12px;margin-left:auto}
.nav-search{
  display:flex;align-items:center;gap:8px;
  width:200px;height:38px;padding:0 14px;
  background:#F3F2ED;border-radius:var(--r-pill);
  transition:background 180ms ease,box-shadow 180ms ease;
}
.nav-search svg{width:15px;height:15px;color:var(--muted);flex:none}
.nav-search input{
  width:100%;border:0;background:transparent;outline:none;
  font-size:13px;color:var(--ink);font-family:inherit;
}
.nav-search input::placeholder{color:var(--muted)}
.nav-search:focus-within{background:#fff;box-shadow:0 0 0 2px var(--brand-soft),0 0 0 3px rgba(14,158,122,.45)}
.burger{
  display:none;position:relative;width:40px;height:40px;flex:none;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-btn);cursor:pointer;
}
.burger span,.burger::before,.burger::after{
  content:"";position:absolute;left:11px;right:11px;height:1.6px;background:var(--ink);
  border-radius:2px;transition:transform 200ms ease,opacity 160ms ease;
}
.burger span{top:19px}
.burger::before{top:13px}
.burger::after{top:25px}
.burger[aria-expanded="true"] span{opacity:0}
.burger[aria-expanded="true"]::before{transform:translateY(6px) rotate(45deg)}
.burger[aria-expanded="true"]::after{transform:translateY(-6px) rotate(-45deg)}

/* ---------- buttons / badges ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:14.5px;font-weight:600;border:1px solid transparent;
  cursor:pointer;transition:background 180ms ease,color 180ms ease,border-color 180ms ease,transform 180ms ease,box-shadow 180ms ease;
  white-space:nowrap;
}
.btn-primary{background:var(--ink);color:#fff}
.btn-primary:hover{background:var(--brand);color:#fff;box-shadow:var(--shadow-2)}
.btn-primary:active{background:var(--brand-dark)}
.btn-brand{background:var(--brand);color:#fff}
.btn-brand:hover{background:var(--brand-dark);color:#fff;box-shadow:var(--shadow-2)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{background:var(--brand-soft);border-color:var(--brand);color:var(--brand-dark)}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;box-shadow:none}
.btn-lg{height:52px;padding:0 28px;font-size:15px}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:var(--r-pill);
  font-size:13px;font-weight:500;line-height:1.6;
}
.badge-brand{background:var(--brand-soft);color:var(--brand-dark)}
.badge-amber{background:var(--amber-soft);color:#8A6118}
.eyebrow{
  display:inline-block;font-family:var(--mono);font-size:12.5px;
  letter-spacing:.14em;text-transform:uppercase;color:var(--brand);
  margin-bottom:12px;
}
.link-arrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14px;font-weight:600;color:var(--brand-dark);
}
.link-arrow svg{width:16px;height:16px;transition:transform 180ms ease}
.link-arrow:hover svg{transform:translateX(4px)}

/* ---------- breadcrumb ---------- */
.breadcrumb{background:#fff;border-bottom:1px solid var(--line)}
.breadcrumb .container{display:flex;align-items:center;gap:8px;height:48px;font-size:13px;color:var(--muted)}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:#C9C3B6}
.breadcrumb .current{color:var(--ink);font-weight:600}

/* ---------- hero ---------- */
.cat-hero{padding:56px 0 24px;position:relative;overflow:hidden}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(20,24,27,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(20,24,27,.05) 1px,transparent 1px);
  background-size:72px 72px;
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.55),transparent 78%);
  mask-image:linear-gradient(180deg,rgba(0,0,0,.55),transparent 78%);
  opacity:.55;pointer-events:none;
}
.cat-hero-grid{
  position:relative;
  display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);
  gap:48px;align-items:center;
}
.cat-hero h1{margin:16px 0 18px}
.cat-hero h1 .hl{color:var(--brand)}
.lead{font-size:17px;line-height:1.8;color:var(--ink-2);max-width:560px}
.hero-stats{
  display:flex;flex-wrap:wrap;gap:0;
  margin-top:30px;background:var(--alt);
  border-radius:var(--r-md);border:1px solid var(--line);
}
.hs-item{flex:1 1 0;min-width:150px;padding:16px 20px;border-left:1px solid #DDD8CB}
.hs-item:first-child{border-left:0}
.hs-num{
  font-family:var(--mono);font-size:26px;font-weight:600;line-height:1;color:var(--ink);
  display:flex;align-items:baseline;gap:4px;
}
.hs-num i{font-style:normal;font-size:12px;color:var(--muted);font-weight:500}
.hs-cap{display:block;margin-top:8px;font-size:13px;color:var(--muted);line-height:1.6}
.cat-hero-media{margin:0}
.cat-hero-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:var(--r-lg);border:1px solid rgba(20,24,27,.06);
  background:#EDEBE4;
}

/* ---------- sections ---------- */
.section{padding:88px 0}
.section-alt{background:var(--alt)}
.section-head{max-width:660px;margin-bottom:34px}
.section-head h2{margin-bottom:12px}
.section-head p{font-size:15px;line-height:1.85;color:var(--muted)}

/* ---------- spec table ---------- */
.spec-table{border-top:1px solid var(--line);background:var(--surface);border-radius:var(--r-md);overflow:hidden;box-shadow:var(--shadow-1)}
.spec-head{
  display:grid;grid-template-columns:64px minmax(0,1fr) 350px 36px;
  gap:20px;align-items:center;
  padding:14px 22px;font-size:13px;color:var(--muted);
  background:#FBFAF6;border-bottom:1px solid var(--line);
}
.spec-row{
  display:grid;grid-template-columns:64px minmax(0,1fr) 350px 36px;
  gap:20px;align-items:center;
  padding:18px 22px;min-height:76px;
  border-bottom:1px solid var(--line);
  color:inherit;
  transition:background 180ms ease;
}
.spec-row:last-child{border-bottom:0}
.spec-row:hover{background:var(--alt);color:inherit}
.spec-no{font-family:var(--mono);font-size:14px;font-weight:600;color:var(--brand);letter-spacing:.02em}
.spec-name strong{display:block;font-size:16px;font-weight:600;line-height:1.5}
.spec-name em{display:block;margin-top:4px;font-style:normal;font-size:13.5px;color:var(--muted);line-height:1.6}
.spec-params{font-family:var(--mono);font-size:12.5px;line-height:1.95;color:var(--ink-2)}
.spec-params span{display:inline-block;margin-right:14px;white-space:nowrap}
.spec-arrow{color:#B9B2A4;transition:transform 180ms ease,color 180ms ease;justify-self:end}
.spec-arrow svg{width:18px;height:18px}
.spec-row:hover .spec-arrow{transform:translateX(4px);color:var(--brand)}
.spec-note{margin-top:16px;font-size:13px;color:var(--muted)}

/* ---------- split / checklist ---------- */
.split{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:48px;align-items:center}
.split figure{margin:0}
.split img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:var(--r-lg);border:1px solid rgba(20,24,27,.06);background:#EDEBE4;
}
.check-list{margin-top:24px;display:grid;gap:18px}
.check-list li{display:grid;grid-template-columns:44px minmax(0,1fr);gap:16px;align-items:start}
.ck-no{
  font-family:var(--mono);font-size:13px;font-weight:600;color:#8A6118;
  background:var(--amber-soft);border-radius:var(--r-sm);
  height:28px;display:flex;align-items:center;justify-content:center;
}
.check-list strong{display:block;font-size:16px;font-weight:600;margin-bottom:4px}
.check-list p{font-size:14.5px;line-height:1.85;color:var(--muted)}

/* ---------- supply ---------- */
.supply{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:48px;align-items:start}
.supply-copy h2{margin:0 0 14px}
.supply-copy p{font-size:15px;line-height:1.9;color:var(--ink-2);margin-bottom:20px}
.supply-list{border-top:1px solid var(--line)}
.supply-list li{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:18px 4px;border-bottom:1px solid var(--line);
  transition:background 180ms ease,padding 180ms ease;
}
.supply-list li:hover{background:var(--surface);padding-left:12px;padding-right:12px}
.s-key{font-size:14px;font-weight:600;color:var(--ink);flex:none}
.s-val{font-family:var(--mono);font-size:13px;color:var(--muted);text-align:right}

/* ---------- faq ---------- */
.faq-wrap{max-width:880px;margin:0 auto}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  margin-bottom:10px;overflow:hidden;transition:border-color 180ms ease,box-shadow 180ms ease;
}
.faq-item:hover{border-color:#CFC9BA;box-shadow:var(--shadow-1)}
.faq-item.open{border-color:var(--brand);box-shadow:0 10px 28px -18px rgba(14,158,122,.55)}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  width:100%;padding:20px 24px;border:0;background:transparent;
  font-size:16px;font-weight:600;color:var(--ink);text-align:left;cursor:pointer;
}
.faq-icon{
  flex:none;width:22px;height:22px;position:relative;
  transition:transform 220ms ease;color:var(--brand);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:currentColor;border-radius:2px;
}
.faq-icon::before{left:10px;top:3px;width:2px;height:16px}
.faq-icon::after{left:3px;top:10px;width:16px;height:2px}
.faq-item.open .faq-icon{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 280ms ease}
.faq-item.open .faq-a{max-height:360px}
.faq-a p{padding:0 24px 22px;margin:0;font-size:15px;line-height:1.9;color:var(--ink-2)}

/* ---------- cta band ---------- */
.cta-band{background:var(--dark);padding:56px 0}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px}
.cta-inner h2{color:#fff;margin-bottom:10px}
.cta-inner p{color:rgba(255,255,255,.7);font-size:15px;line-height:1.8;max-width:560px}
.cta-mark{
  font-family:var(--mono);font-size:12px;letter-spacing:.16em;color:rgba(255,255,255,.4);
  margin-top:18px;display:block;
}

/* ---------- footer ---------- */
.site-footer{background:var(--dark);padding:64px 0 0;color:rgba(255,255,255,.72)}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px;
  padding-bottom:44px;border-bottom:1px solid var(--line-dark);
}
.f-brand .logo{margin-bottom:16px}
.f-brand .logo-text{color:#fff}
.f-brand p{font-size:13.5px;line-height:1.9;color:rgba(255,255,255,.6);max-width:280px;margin-bottom:16px}
.f-tags{display:flex;flex-wrap:wrap;gap:8px}
.f-tags span{
  font-size:12px;padding:3px 10px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.07);color:rgba(255,255,255,.68);
}
.f-col h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px}
.f-col a,.f-col div{
  display:block;font-size:13.5px;line-height:2;color:rgba(255,255,255,.62);
}
.f-col a:hover{color:#8FE3CB}
.f-contact span{display:block;font-size:12.5px;color:rgba(255,255,255,.4);margin-bottom:8px}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 0;font-size:12.5px;color:rgba(255,255,255,.42);
}
.footer-links{display:flex;flex-wrap:wrap;gap:18px}
.footer-links a{color:rgba(255,255,255,.5);font-size:12.5px}
.footer-links a:hover{color:#8FE3CB}

/* ---------- drawer ---------- */
.drawer{
  position:fixed;left:0;right:0;top:68px;bottom:0;z-index:55;
  display:none;flex-direction:column;gap:0;
  background:#fff;padding:18px 24px 32px;overflow-y:auto;
  border-top:1px solid var(--line);
}
.drawer.open{display:flex}
.drawer .drawer-search{
  display:flex;align-items:center;gap:8px;height:44px;padding:0 16px;
  background:#F3F2ED;border-radius:var(--r-pill);margin-bottom:14px;
}
.drawer .drawer-search svg{width:16px;height:16px;color:var(--muted)}
.drawer .drawer-search input{border:0;background:transparent;outline:none;width:100%;font-size:14px;font-family:inherit}
.drawer a.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  line-height:52px;min-height:52px;font-size:15px;color:var(--ink-2);
  border-bottom:1px solid var(--line);
}
.drawer a.drawer-link.active{color:var(--brand);font-weight:600}
.drawer-foot{margin-top:auto;padding-top:24px;font-size:13px;color:var(--muted);line-height:1.9}
.drawer-foot b{display:block;font-family:var(--mono);color:var(--ink);font-size:15px;font-weight:600}

/* ---------- responsive ---------- */
@media (max-width:1120px){
  .nav-main{gap:20px}
  .nav-search{width:170px}
  .spec-head,.spec-row{grid-template-columns:56px minmax(0,1fr) 300px 32px;gap:16px}
}
@media (max-width:960px){
  .nav-main,.nav-search{display:none}
  .burger{display:block}
  .cat-hero-grid{grid-template-columns:1fr;gap:32px}
  .cat-hero-media{order:-1}
  .cat-hero-media img{aspect-ratio:16/9}
  .split,.supply{grid-template-columns:1fr;gap:32px}
  .section{padding:64px 0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:900px){
  .spec-head{display:none}
  .spec-table{border-radius:var(--r-md)}
  .spec-row{
    grid-template-columns:40px minmax(0,1fr) 26px;
    grid-template-rows:auto auto;
    gap:8px 14px;padding:16px 16px;align-items:start;
  }
  .spec-no{grid-column:1;grid-row:1;padding-top:2px}
  .spec-name{grid-column:2;grid-row:1}
  .spec-arrow{grid-column:3;grid-row:1;align-self:start;justify-self:end}
  .spec-params{grid-column:2 / 4;grid-row:2;font-size:12px;line-height:1.9}
  .spec-params span{margin-right:10px}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .section{padding:48px 0}
  .cat-hero{padding:32px 0 16px}
  .hero-stats{flex-direction:column}
  .hs-item{border-left:0;border-top:1px solid #DDD8CB;padding:14px 18px}
  .hs-item:first-child{border-top:0}
  .lead{font-size:15.5px}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:22px}
  .cta-inner .btn{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:12px}
  .faq-q{padding:18px 18px;font-size:15px}
  .faq-a p{padding:0 18px 18px;font-size:14.5px}
  .supply-list li{flex-direction:column;align-items:flex-start;gap:6px}
  .s-val{text-align:left}
}
@media (max-width:480px){
  h1{font-size:26px}
  .eyebrow{margin-bottom:8px}
  .hs-num{font-size:22px}
  .btn-lg{width:100%}
  .cat-hero::before{display:none}
}

/* roulang page: category4 */
/* ---------- 设计变量 ---------- */
:root{
  --brand:#0E9E7A;
  --brand-dark:#0A6E56;
  --brand-soft:#E4F5EF;
  --ink:#14181B;
  --ink-2:#3D4548;
  --ink-3:#6E7679;
  --amber:#E0A03C;
  --amber-soft:#FAF0DC;
  --bg:#F7F6F2;
  --card:#FFFFFF;
  --soft:#F1EFE8;
  --dark:#10171A;
  --line:#E3DFD6;
  --line-dark:rgba(255,255,255,.12);
  --r-sm:8px;
  --r:12px;
  --r-lg:16px;
  --r-pill:999px;
  --sh:0 1px 2px rgba(20,24,27,.05);
  --sh-hover:0 10px 28px -14px rgba(20,24,27,.22);
  --mono:ui-monospace,"JetBrains Mono","SFMono-Regular",Menlo,Consolas,monospace;
  --sans:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
  --sp:88px;
}
/* ---------- 基础 reset ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.85;
  color:var(--ink-2);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input,select,textarea{font-family:inherit;font-size:16px;color:var(--ink);}
:focus-visible{outline:3px solid var(--brand-soft);outline-offset:2px;border-radius:4px;}
::selection{background:var(--brand-soft);color:var(--brand-dark);}
h1,h2,h3{color:var(--ink);letter-spacing:-.01em;}
/* ---------- 容器 ---------- */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:10px;
  font-size:15px;font-weight:600;line-height:1;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
  border:1px solid transparent;white-space:nowrap;
}
.btn-primary{background:var(--ink);color:#fff;}
.btn-primary:hover{background:var(--brand);color:#fff;box-shadow:var(--sh-hover);}
.btn-primary:active{background:var(--brand-dark);transform:translateY(1px);}
.btn-brand{background:var(--brand);color:#fff;}
.btn-brand:hover{background:var(--brand-dark);box-shadow:var(--sh-hover);}
.btn-brand:active{transform:translateY(1px);}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--ink);}
.btn-ghost:hover{background:var(--brand-soft);border-color:var(--brand);color:var(--brand-dark);}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;box-shadow:none;transform:none;}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--brand-dark);
}
.link-arrow svg{transition:transform .18s ease;}
.link-arrow:hover svg{transform:translateX(4px);}
/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:var(--r-pill);
  font-size:13px;font-weight:600;line-height:1.6;
  background:var(--brand-soft);color:var(--brand-dark);
}
.badge-amber{background:var(--amber-soft);color:#8A5C12;}
.badge-dark{background:rgba(255,255,255,.1);color:#CBE9E0;}
/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:90;
  background:#fff;border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease;
}
.site-header.scrolled{box-shadow:0 6px 20px -14px rgba(20,24,27,.35);}
.nav-wrap{display:flex;align-items:center;gap:28px;height:68px;}
.logo{display:inline-flex;align-items:center;gap:9px;flex:0 0 auto;}
.logo svg{width:24px;height:24px;flex:0 0 auto;}
.logo-text{font-size:18px;font-weight:700;color:var(--ink);letter-spacing:0;}
.nav-main{display:flex;align-items:center;gap:28px;margin-left:8px;}
.nav-main > a{
  position:relative;font-size:14px;font-weight:500;color:var(--ink-2);
  padding:22px 0;transition:color .18s ease;white-space:nowrap;
}
.nav-main > a::after{
  content:"";position:absolute;left:0;right:0;bottom:16px;height:2px;
  background:var(--brand);border-radius:2px;transform:scaleX(0);
  transform-origin:left;transition:transform .18s ease;
}
.nav-main > a:hover{color:var(--brand-dark);}
.nav-main > a:hover::after,
.nav-main > a.active::after{transform:scaleX(1);}
.nav-main > a.active{color:var(--brand-dark);font-weight:600;}
.nav-right{display:flex;align-items:center;gap:12px;margin-left:auto;}
.nav-search{
  position:relative;display:flex;align-items:center;
  width:200px;height:40px;padding:0 12px;gap:8px;
  background:#F3F2ED;border-radius:var(--r-pill);
  border:1px solid transparent;transition:background-color .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.nav-search svg{width:16px;height:16px;color:var(--ink-3);flex:0 0 auto;}
.nav-search input{
  border:0;background:transparent;width:100%;font-size:14px;color:var(--ink);
  outline:none;padding:0;
}
.nav-search input::placeholder{color:var(--ink-3);}
.nav-search:focus-within{background:#fff;border-color:var(--brand);box-shadow:0 0 0 2px var(--brand-soft);}
.nav-cta{height:40px;padding:0 18px;font-size:14px;border-radius:var(--r-pill);}
.burger{
  display:none;width:42px;height:42px;border-radius:10px;
  border:1px solid var(--line);background:#fff;position:relative;
}
.burger span,
.burger::before,
.burger::after{
  content:"";position:absolute;left:50%;width:18px;height:2px;border-radius:2px;
  background:var(--ink);transform:translateX(-50%);
  transition:transform .2s ease,opacity .2s ease;
}
.burger span{top:20px;}
.burger::before{top:14px;}
.burger::after{top:26px;}
body.menu-open .burger span{opacity:0;}
body.menu-open .burger::before{transform:translateX(-50%) translateY(6px) rotate(45deg);}
body.menu-open .burger::after{transform:translateX(-50%) translateY(-6px) rotate(-45deg);}
.nav-mobile-note{display:none;}
/* ---------- 面包屑 ---------- */
.breadcrumb{background:#fff;border-bottom:1px solid var(--line);}
.breadcrumb .container{display:flex;align-items:center;gap:8px;height:48px;font-size:13px;color:var(--ink-3);overflow:hidden;white-space:nowrap;}
.breadcrumb a{transition:color .18s ease;}
.breadcrumb a:hover{color:var(--brand-dark);}
.breadcrumb .sep{color:#C6C1B6;}
.breadcrumb .current{color:var(--ink);font-weight:600;}
/* ---------- Hero ---------- */
.page-hero{position:relative;padding:64px 0 var(--sp);background:var(--bg);overflow:hidden;}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:64px 64px;opacity:.5;
  -webkit-mask-image:radial-gradient(circle at 78% 18%,#000 0,transparent 68%);
  mask-image:radial-gradient(circle at 78% 18%,#000 0,transparent 68%);
  pointer-events:none;
}
.page-hero .container{position:relative;}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;}
.hero-kicker{display:flex;align-items:center;gap:12px;margin-bottom:20px;flex-wrap:wrap;}
.ruler{display:inline-flex;align-items:flex-end;gap:4px;height:14px;}
.ruler i{display:block;width:1px;height:7px;background:#C9C4B8;}
.ruler i:nth-child(3n+1){height:14px;background:#A9A395;}
.hero-title{font-size:clamp(32px,4.2vw,50px);line-height:1.18;font-weight:700;color:var(--ink);letter-spacing:-.02em;}
.hero-title em{font-style:normal;color:var(--brand-dark);}
.hero-lead{margin-top:20px;font-size:17px;line-height:1.85;color:var(--ink-2);max-width:540px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.hero-stats{
  display:grid;grid-template-columns:repeat(3,1fr);
  gap:0;margin-top:36px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r);box-shadow:var(--sh);overflow:hidden;
}
.hero-stats .stat{padding:18px 20px;border-right:1px solid var(--line);}
.hero-stats .stat:last-child{border-right:0;}
.stat-num{font-family:var(--mono);font-size:clamp(22px,2.4vw,28px);font-weight:600;color:var(--ink);letter-spacing:-.02em;line-height:1.1;}
.stat-num small{font-size:13px;font-weight:500;color:var(--ink-3);margin-left:3px;}
.stat-label{margin-top:6px;font-size:13px;color:var(--ink-3);line-height:1.6;}
.hero-visual{position:relative;}
.hero-visual img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:var(--r-lg);border:1px solid rgba(20,24,27,.06);
  background:#EDEBE4;box-shadow:var(--sh);
}
.hero-tag{
  position:absolute;right:-8px;bottom:-18px;
  display:flex;align-items:center;gap:10px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r);
  padding:12px 16px;box-shadow:var(--sh-hover);
}
.hero-tag b{font-family:var(--mono);font-size:20px;color:var(--brand-dark);font-weight:600;}
.hero-tag span{font-size:12px;color:var(--ink-3);line-height:1.5;}
/* ---------- 通用板块 ---------- */
.section{padding:var(--sp) 0;}
.section-soft{background:var(--soft);}
.section-head{max-width:720px;margin-bottom:32px;}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--mono);font-size:12px;letter-spacing:.08em;
  color:var(--brand-dark);text-transform:uppercase;margin-bottom:12px;
}
.section-head .eyebrow::before{content:"";width:24px;height:1px;background:var(--brand);}
.section-title{font-size:clamp(24px,2.6vw,34px);line-height:1.25;font-weight:700;}
.section-desc{margin-top:14px;font-size:15px;line-height:1.85;color:var(--ink-3);}
/* ---------- 深色流程带 ---------- */
.flow-band{background:var(--dark);color:#D9E2E0;padding:72px 0 56px;position:relative;}
.flow-band .eyebrow{color:#8FE3CB;}
.flow-band .eyebrow::before{background:#8FE3CB;}
.flow-band .section-title{color:#fff;}
.flow-band .section-desc{color:#9AA6A4;}
.flow-steps{
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;
  margin-top:44px;position:relative;
}
.flow-step{padding:0 22px 0 0;position:relative;}
.flow-step::before{
  content:"";position:absolute;top:15px;left:0;right:0;height:1px;
  background:var(--line-dark);
}
.flow-step:last-child::before{right:22px;}
.flow-node{
  position:relative;z-index:1;
  display:inline-flex;align-items:center;justify-content:center;
  width:32px;height:32px;border-radius:50%;
  background:var(--brand);color:#06231C;
  font-family:var(--mono);font-size:13px;font-weight:700;
  box-shadow:0 0 0 6px rgba(14,158,122,.14);
  margin-bottom:20px;
}
.flow-step h3{color:#fff;font-size:18px;font-weight:600;margin-bottom:10px;}
.flow-step p{font-size:14px;line-height:1.85;color:#9AA6A4;padding-right:8px;}
.flow-tick{
  margin-top:44px;height:14px;display:flex;align-items:flex-end;gap:5px;
  border-top:1px solid var(--line-dark);padding-top:8px;
}
.flow-tick i{display:block;width:1px;height:6px;background:rgba(255,255,255,.24);}
.flow-tick i:nth-child(3n+1){height:12px;background:rgba(255,255,255,.5);}
/* ---------- 场景横向滚动 ---------- */
.scene-scroll{
  display:flex;gap:20px;overflow-x:auto;padding:6px 4px 22px;
  scroll-snap-type:x mandatory;
  scrollbar-width:thin;
}
.scene-scroll::-webkit-scrollbar{height:6px;}
.scene-scroll::-webkit-scrollbar-thumb{background:#D8D3C6;border-radius:99px;}
.scene-card{
  flex:0 0 280px;scroll-snap-align:start;
  background:var(--card);border:1px solid var(--line);border-radius:14px;
  overflow:hidden;box-shadow:var(--sh);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.scene-card:hover{transform:translateY(-2px);border-color:var(--brand);box-shadow:var(--sh-hover);}
.scene-card img{width:100%;aspect-ratio:16/9;object-fit:cover;background:#EDEBE4;}
.scene-body{padding:18px 20px 22px;}
.scene-body h3{font-size:16px;font-weight:600;margin:10px 0 8px;}
.scene-body p{font-size:13px;line-height:1.8;color:var(--ink-3);}
.scene-meta{
  margin-top:14px;padding-top:12px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;
  font-family:var(--mono);font-size:12px;color:var(--ink-3);
}
/* ---------- 结果对比 ---------- */
.compare{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:28px;box-shadow:var(--sh);}
.compare-head{
  display:grid;grid-template-columns:220px 1fr 1fr;gap:24px;
  font-size:13px;color:var(--ink-3);padding-bottom:14px;border-bottom:1px solid var(--line);
}
.compare-head span:nth-child(2),
.compare-head span:nth-child(3){display:flex;align-items:center;gap:8px;font-weight:600;}
.dot{display:inline-block;width:8px;height:8px;border-radius:50%;}
.dot-grey{background:#B9B3A5;}
.dot-brand{background:var(--brand);}
.cmp-row{
  display:grid;grid-template-columns:220px 1fr 1fr;gap:24px;align-items:center;
  padding:22px 0;border-bottom:1px solid var(--line);
}
.cmp-row:last-child{border-bottom:0;padding-bottom:6px;}
.cmp-label{font-size:15px;font-weight:600;color:var(--ink);}
.cmp-label span{display:block;font-family:var(--mono);font-size:12px;font-weight:400;color:var(--ink-3);margin-top:4px;}
.cmp-track{position:relative;height:34px;border-radius:8px;background:var(--soft);overflow:hidden;}
.cmp-track i{position:absolute;inset:0 auto 0 0;border-radius:8px;display:block;}
.cmp-before i{background:#D7D2C5;}
.cmp-after i{background:linear-gradient(90deg,var(--brand),#28BE96);}
.cmp-track b{
  position:absolute;top:0;left:12px;height:34px;display:flex;align-items:center;
  font-family:var(--mono);font-size:13px;font-weight:600;color:var(--ink);z-index:1;
}
.cmp-after b{color:#fff;}
.cmp-note{margin-top:18px;font-size:13px;color:var(--ink-3);line-height:1.7;}
/* ---------- 交付清单 ---------- */
.deliver-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px 40px;margin-top:8px;}
.deliver-item{
  display:flex;gap:14px;padding:20px 22px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r);
  transition:border-color .18s ease,box-shadow .18s ease,transform .18s ease;
}
.deliver-item:hover{border-color:var(--brand);box-shadow:var(--sh-hover);transform:translateY(-2px);}
.deliver-item .num{
  font-family:var(--mono);font-size:13px;font-weight:600;color:var(--brand-dark);
  flex:0 0 auto;padding-top:3px;
}
.deliver-item h3{font-size:16px;font-weight:600;margin-bottom:6px;}
.deliver-item p{font-size:14px;line-height:1.8;color:var(--ink-3);}
/* ---------- FAQ ---------- */
.faq-wrap{max-width:880px;margin:0 auto;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r);
  margin-bottom:10px;overflow:hidden;transition:border-color .18s ease,box-shadow .18s ease;
}
.faq-item:hover{border-color:#CFC9BA;}
.faq-item.open{border-color:var(--brand);box-shadow:0 8px 24px -18px rgba(14,158,122,.5);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 24px;text-align:left;font-size:16px;font-weight:600;color:var(--ink);
  transition:color .18s ease;
}
.faq-q:hover{color:var(--brand-dark);}
.faq-icon{
  position:relative;flex:0 0 auto;width:20px;height:20px;
  transition:transform .22s ease;color:var(--brand-dark);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;top:50%;left:50%;background:currentColor;border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-icon::before{width:14px;height:2px;}
.faq-icon::after{width:2px;height:14px;transition:opacity .22s ease;}
.faq-item.open .faq-icon{transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease;}
.faq-a p{padding:0 24px 22px;font-size:15px;line-height:1.9;color:var(--ink-3);}
/* ---------- CTA 条 ---------- */
.cta-band{background:var(--dark);padding:56px 0;}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;}
.cta-title{color:#fff;font-size:clamp(22px,2.4vw,30px);line-height:1.32;font-weight:700;max-width:640px;}
.cta-sub{margin-top:12px;font-size:14px;color:#9AA6A4;line-height:1.8;}
.cta-inner .btn{flex:0 0 auto;}
.cta-contact{margin-top:16px;display:flex;gap:22px;flex-wrap:wrap;font-family:var(--mono);font-size:13px;color:#8FE3CB;}
/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:#B9C4C2;padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.4fr .8fr .9fr 1fr;gap:40px;padding-bottom:44px;}
.f-brand .logo{margin-bottom:16px;}
.f-brand .logo-text{color:#fff;}
.f-brand p{font-size:14px;line-height:1.85;color:#9AA6A4;max-width:280px;}
.f-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px;}
.f-tags span{
  font-size:12px;padding:4px 10px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.07);color:#CBE9E0;border:1px solid var(--line-dark);
}
.f-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;}
.f-col a,.f-col div{display:block;font-size:14px;line-height:2;color:#B9C4C2;transition:color .18s ease;}
.f-col a:hover{color:#8FE3CB;}
.f-col span{display:block;font-size:13px;line-height:1.8;color:#7F8C8A;margin-bottom:10px;}
.footer-bottom{
  border-top:1px solid var(--line-dark);
  padding:20px 0 24px;display:flex;align-items:center;justify-content:space-between;gap:20px;
  font-size:13px;color:#7F8C8A;flex-wrap:wrap;
}
.footer-links{display:flex;flex-wrap:wrap;gap:18px;}
.footer-links a{transition:color .18s ease;}
.footer-links a:hover{color:#8FE3CB;}
/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  :root{--sp:72px;}
  .hero-grid{gap:36px;}
}
@media (max-width:1023px){
  :root{--sp:64px;}
  .nav-search{width:160px;}
  .nav-main{gap:18px;}
  .nav-main > a{font-size:13px;}
  .hero-grid{grid-template-columns:1fr;}
  .hero-visual{order:-1;}
  .hero-visual img{aspect-ratio:16/9;}
  .hero-tag{position:static;margin-top:14px;box-shadow:var(--sh);border-radius:var(--r);}
  .flow-steps{grid-template-columns:repeat(2,1fr);gap:32px 0;}
  .flow-step:nth-child(2)::before{right:22px;}
  .compare-head,.cmp-row{grid-template-columns:160px 1fr 1fr;gap:16px;}
  .deliver-grid{grid-template-columns:1fr;gap:14px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
}
@media (max-width:767px){
  :root{--sp:48px;}
  .container{padding:0 18px;}
  .nav-wrap{height:64px;gap:14px;}
  .nav-main{
    position:fixed;top:64px;left:0;right:0;bottom:0;
    display:none;flex-direction:column;align-items:stretch;gap:0;
    background:#fff;padding:12px 18px 32px;margin:0;
    overflow-y:auto;border-top:1px solid var(--line);
  }
  body.menu-open .nav-main{display:flex;}
  .nav-main > a{
    padding:0;height:52px;display:flex;align-items:center;
    font-size:16px;border-bottom:1px solid var(--line);
  }
  .nav-main > a::after{display:none;}
  .nav-main > a.active{color:var(--brand-dark);}
  .nav-mobile-note{display:block;margin-top:24px;}
  .nav-mobile-note .btn{width:100%;}
  .nav-mobile-note p{margin-top:14px;font-size:13px;color:var(--ink-3);line-height:1.8;}
  .nav-search{display:none;}
  .nav-cta{height:38px;padding:0 14px;font-size:13px;}
  .burger{display:block;}
  .hero-stats{grid-template-columns:1fr;margin-top:28px;}
  .hero-stats .stat{border-right:0;border-bottom:1px solid var(--line);}
  .hero-stats .stat:last-child{border-bottom:0;}
  .hero-title{font-size:clamp(28px,7.4vw,36px);}
  .flow-steps{grid-template-columns:1fr;gap:0;}
  .flow-step{
    padding:0 0 28px 0;
  }
  .flow-step::before{
    top:32px;bottom:0;left:15px;right:auto;width:1px;height:auto;
  }
  .flow-step:last-child::before{display:none;}
  .flow-node{margin-bottom:14px;}
  .flow-step p{padding-right:0;}
  .compare{padding:20px 16px;}
  .compare-head{display:none;}
  .cmp-row{grid-template-columns:1fr;gap:10px;padding:18px 0;}
  .cmp-label{margin-bottom:4px;}
  .cmp-track{height:32px;}
  .cmp-track b{height:32px;}
  .cmp-before::before,.cmp-after::before{
    content:"";position:absolute;top:0;left:0;bottom:0;width:4px;border-radius:8px 0 0 8px;
  }
  .cmp-before::before{background:#B9B3A5;}
  .cmp-after::before{background:var(--brand-dark);}
  .cmp-track i{left:4px;border-radius:0 8px 8px 0;}
  .scene-card{flex:0 0 84%;}
  .faq-q{padding:16px 18px;font-size:15px;}
  .faq-a p{padding:0 18px 18px;}
  .cta-band{padding:44px 0;}
  .cta-inner .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:12px;}
}
@media (max-width:480px){
  .container{padding:0 16px;}
  .hero-title{font-size:26px;}
  .section-title{font-size:22px;}
  .page-hero::before{display:none;}
  .deliver-item{padding:16px;}
  .btn{width:100%;}
  .hero-actions{flex-direction:column;}
  .cta-contact{flex-direction:column;gap:6px;}
}