/* roulang page: index */
:root{
  --c-primary:#0E5A55;
  --c-primary-800:#0A423E;
  --c-primary-100:#E3EFEC;
  --c-accent:#D8622E;
  --c-accent-dark:#BC5123;
  --c-sand:#E4C89A;
  --c-bg:#F6F4EF;
  --c-surface:#FFFFFF;
  --c-surface-2:#ECE8E0;
  --c-line:#DCD8CF;
  --c-ink:#1B2321;
  --c-ink-2:#4A5551;
  --c-ink-3:#7C8781;
  --c-ok:#2F7D5A;
  --c-err:#C2503C;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:18px;
  --r-card:14px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(27,35,33,.06);
  --sh-2:0 12px 28px -14px rgba(14,90,85,.22);
  --sh-3:0 22px 48px -22px rgba(14,90,85,.30);
  --font-sans:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
  --font-mono:ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;
  --ease:cubic-bezier(.2,.7,.3,1);
  --gap:24px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
h1{font-size:clamp(30px,4.2vw,50px);font-weight:700;letter-spacing:-.01em;line-height:1.25}
h2{font-size:clamp(24px,2.6vw,34px);font-weight:700;line-height:1.35}
h3{font-size:20px;font-weight:700;line-height:1.5}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:4px}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section--tight{padding:64px 0}
.section-head{max-width:760px;margin-bottom:28px}
.eyebrow{
  display:inline-block;
  font-size:12.5px;
  letter-spacing:.08em;
  font-weight:600;
  color:var(--c-primary);
  text-transform:uppercase;
  margin-bottom:12px;
}
.section-head p{color:var(--c-ink-2);margin-top:12px;font-size:16px}
.section-head--row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;max-width:none}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--c-primary);
  position:relative;
}
.link-arrow::after{
  content:"";position:absolute;left:0;bottom:-3px;height:1px;width:0;
  background:var(--c-accent);transition:width .18s var(--ease);
}
.link-arrow:hover::after{width:100%}
.link-arrow:hover{color:var(--c-accent)}
.link-arrow svg{width:14px;height:14px;flex:0 0 auto}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1.2;cursor:pointer;
  transition:transform .2s var(--ease),background-color .2s var(--ease),box-shadow .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.btn svg{width:16px;height:16px}
.btn-primary{background:var(--c-accent);color:#fff;box-shadow:var(--sh-1)}
.btn-primary:hover{background:var(--c-accent-dark);transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(0);background:#A8461C}
.btn-ghost{background:transparent;border-color:var(--c-primary);color:var(--c-primary)}
.btn-ghost:hover{background:var(--c-primary-100);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0);background:#D5E6E2}
.btn[disabled]{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}
.btn-block{width:100%;height:48px}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.92);
  border-bottom:1px solid transparent;
  transition:box-shadow .2s var(--ease),background-color .2s var(--ease),border-color .2s var(--ease);
}
.site-header.is-scrolled{background:rgba(255,255,255,.98);border-bottom-color:var(--c-line);box-shadow:var(--sh-1)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:20px;height:72px}
.brand{display:inline-flex;align-items:center;gap:10px;height:36px}
.brand-mark{width:34px;height:34px;flex:0 0 auto;display:grid;place-items:center;border-radius:10px;background:var(--c-primary-100)}
.brand-mark svg{width:22px;height:22px}
.brand-name{font-size:17px;font-weight:700;letter-spacing:.01em;color:var(--c-primary-800)}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-links > a{
  font-size:14.5px;font-weight:500;color:var(--c-ink-2);
  padding:7px 12px;border-radius:var(--r-pill);
  transition:background-color .18s var(--ease),color .18s var(--ease);
}
.nav-links > a:hover{color:var(--c-primary);background:var(--c-primary-100)}
.nav-links > a.is-active{color:var(--c-primary);background:var(--c-primary-100);font-weight:600}
.nav-cta{
  background:var(--c-accent)!important;color:#fff!important;
  padding:8px 18px!important;border-radius:var(--r-btn)!important;font-weight:600!important;
  transition:background-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease)!important;
}
.nav-cta:hover{background:var(--c-accent-dark)!important;color:#fff!important;transform:translateY(-1px);box-shadow:var(--sh-2)}
.nav-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--c-line);background:var(--c-surface);
  border-radius:var(--r-btn);cursor:pointer;padding:0;
}
.nav-toggle span{display:block;width:18px;height:2px;margin:3px auto;background:var(--c-primary-800);border-radius:2px;transition:transform .2s var(--ease),opacity .2s var(--ease)}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-5px) rotate(-45deg)}

/* ---------- Hero ---------- */
.hero{padding:64px 0 0;position:relative;overflow:hidden}
.hero::before{
  content:"";position:absolute;right:-120px;top:-40px;width:420px;height:420px;
  border-radius:50%;background:radial-gradient(circle,rgba(228,200,154,.35),rgba(228,200,154,0) 68%);
  pointer-events:none;
}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;position:relative;z-index:1}
.hero-copy h1{max-width:19em}
.hero-sub{margin-top:18px;font-size:17px;color:var(--c-ink-2);max-width:34ch}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-stats{display:flex;flex-wrap:wrap;align-items:center;gap:18px;margin-top:32px}
.hero-stat{display:flex;align-items:baseline;gap:6px;font-size:12.5px;color:var(--c-ink-3);letter-spacing:.05em}
.hero-stat .mono{font-size:15px;font-weight:700;color:var(--c-primary);letter-spacing:0}
.hero-divider{width:1px;height:18px;background:var(--c-line)}
.hero-figure{position:relative}
.hero-figure img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r-lg);box-shadow:var(--sh-3)}
.hero-float{
  position:absolute;left:-28px;bottom:28px;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-2);padding:14px 20px;display:flex;flex-direction:column;gap:2px;min-width:158px;
}
.hero-float .num{font-size:26px;font-weight:700;color:var(--c-primary);line-height:1.2}
.hero-float .lbl{font-size:12.5px;color:var(--c-ink-3);letter-spacing:.05em}
.seal{
  position:absolute;right:0;top:-18px;width:44px;height:44px;border-radius:10px;
  background:var(--c-primary);color:#fff;display:grid;place-items:center;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.02em;box-shadow:var(--sh-2);
}
.hero-wave{display:block;width:100%;height:12px;margin-top:56px;opacity:.5}

/* ---------- 指标看板 ---------- */
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--gap)}
.metric{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:22px 22px 18px;box-shadow:var(--sh-1);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.metric:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.metric-label{font-size:12.5px;letter-spacing:.08em;color:var(--c-ink-3);text-transform:uppercase}
.metric-value{display:flex;align-items:baseline;gap:6px;margin-top:12px}
.metric-value .num{font-size:40px;font-weight:700;color:var(--c-primary);line-height:1.05;letter-spacing:-.02em}
.metric-value .unit{font-size:14px;color:var(--c-ink-3)}
.metric-track{height:6px;border-radius:var(--r-pill);background:var(--c-surface-2);margin-top:18px;overflow:hidden}
.metric-track i{display:block;height:100%;border-radius:var(--r-pill);background:var(--c-accent)}

/* ---------- 服务矩阵 ---------- */
.services{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--gap)}
.service-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:26px;box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.service-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.service-top{display:flex;align-items:center;justify-content:space-between;gap:12px}
.service-no{
  font-family:var(--font-mono);font-size:12.5px;font-weight:700;color:var(--c-accent);
  background:rgba(216,98,46,.12);border-radius:var(--r-sm);padding:3px 8px;letter-spacing:.04em;
}
.service-top svg{width:24px;height:24px;color:var(--c-primary)}
.service-card h3{margin-top:16px;font-size:18px}
.service-card p{margin-top:10px;font-size:14px;line-height:1.8;color:var(--c-ink-2)}
.service-card .link-arrow{margin-top:auto;padding-top:18px}
.service-card--lead{
  grid-column:span 2;
  display:grid;grid-template-columns:1.05fr .95fr;gap:24px;align-items:center;
  background:linear-gradient(180deg,#FFFFFF 0%,#FBF9F4 100%);
}
.service-card--lead .lead-text{display:flex;flex-direction:column;height:100%}
.service-card--lead img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-md)}
.service-cta{
  grid-column:span 2;background:var(--c-primary-100);border:1px solid #CFE2DE;border-radius:var(--r-card);
  padding:28px;display:flex;flex-direction:column;justify-content:center;gap:14px;
}
.service-cta p{font-size:14px;color:var(--c-ink-2)}

/* ---------- 结果对比 ---------- */
.compare{
  display:grid;grid-template-columns:1fr 1px 1fr;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);
}
.compare-divider{background:var(--c-line)}
.compare-col{padding:34px 32px}
.compare-col h3{font-size:16px;font-weight:600;display:flex;align-items:center;gap:10px}
.compare-col ul{margin-top:20px;display:grid;gap:14px}
.compare-col li{display:flex;gap:10px;font-size:15px;color:var(--c-ink-2);line-height:1.75}
.compare-col li svg{width:18px;height:18px;flex:0 0 auto;margin-top:5px}
.compare-col--plain li svg{color:var(--c-ink-3)}
.compare-col--entry{background:var(--c-primary-100);box-shadow:inset 0 0 0 1px var(--c-primary)}
.compare-col--entry li svg{color:var(--c-primary)}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:11.5px;font-weight:600;letter-spacing:.06em;
  background:var(--c-accent);color:#fff;border-radius:var(--r-pill);padding:3px 10px;
}
.badge-soft{background:var(--c-primary-100);color:var(--c-primary);letter-spacing:.04em}
.compare-foot{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:18px;margin-top:28px}
.compare-foot p{font-size:16px;color:var(--c-ink-2);max-width:62ch}

/* ---------- 最新信息（CMS） ---------- */
.news-feature{
  display:grid;grid-template-columns:4fr 8fr;gap:0;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.news-feature:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.news-feature-media{display:block;overflow:hidden;background:var(--c-surface-2)}
.news-feature-media img{width:100%;height:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .3s var(--ease)}
.news-feature:hover .news-feature-media img{transform:scale(1.03)}
.news-feature-body{padding:30px 32px;display:flex;flex-direction:column;gap:12px}
.news-feature-body h3{font-size:21px;line-height:1.5}
.news-feature-body h3 a:hover{color:var(--c-primary)}
.news-feature-body p{font-size:14px;color:var(--c-ink-3);line-height:1.8}
.news-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;padding-top:14px}
.news-meta time{font-family:var(--font-mono);font-size:13px;color:var(--c-ink-3)}
.news-meta svg{width:18px;height:18px;color:var(--c-primary)}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap);margin-top:var(--gap)}
.news-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.news-card-media{display:block;overflow:hidden;background:var(--c-surface-2)}
.news-card-media img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .3s var(--ease)}
.news-card:hover .news-card-media img{transform:scale(1.03)}
.news-card-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-card-body h3{font-size:17px;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card:hover .news-card-body h3{color:var(--c-primary)}
.news-card-body p{
  font-size:14px;color:var(--c-ink-3);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.empty-state{
  background:var(--c-surface);border:1px dashed var(--c-line);border-radius:var(--r-card);
  padding:48px 24px;text-align:center;display:flex;flex-direction:column;align-items:center;gap:14px;
}
.empty-state svg{width:36px;height:36px;color:var(--c-ink-3)}
.empty-state p{font-size:15px;color:var(--c-ink-2)}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:840px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--c-line)}
.faq-item:first-child{border-top:1px solid var(--c-line)}
.faq-q{
  width:100%;background:none;border:0;cursor:pointer;text-align:left;
  display:flex;align-items:flex-start;gap:14px;padding:22px 0;
  font-size:17px;font-weight:600;color:var(--c-ink);
  transition:color .18s var(--ease);
}
.faq-q:hover{color:var(--c-primary)}
.faq-idx{font-family:var(--font-mono);font-size:14px;color:var(--c-accent);flex:0 0 auto;padding-top:3px}
.faq-q .faq-icon{margin-left:auto;width:18px;height:18px;flex:0 0 auto;color:var(--c-ink-3);transition:transform .22s var(--ease),color .18s var(--ease);margin-top:4px}
.faq-item.is-open .faq-q{color:var(--c-primary)}
.faq-item.is-open .faq-icon{transform:rotate(45deg);color:var(--c-accent)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s var(--ease)}
.faq-a p{padding:0 0 22px 40px;font-size:15px;line-height:1.9;color:var(--c-ink-2)}

/* ---------- 表单 ---------- */
.contact-card{
  display:grid;grid-template-columns:5fr 7fr;gap:0;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-2);
}
.contact-aside{background:var(--c-primary-800);color:#F0F1EC;padding:40px 36px;display:flex;flex-direction:column;gap:16px}
.contact-aside h2{color:#fff;font-size:26px}
.contact-aside p{font-size:14.5px;color:#CBD8D4;line-height:1.85}
.contact-aside ul{margin-top:auto;display:grid;gap:12px;font-size:14px;color:#CBD8D4}
.contact-aside li{display:flex;gap:10px;align-items:flex-start}
.contact-aside li svg{width:16px;height:16px;flex:0 0 auto;margin-top:5px;color:var(--c-sand)}
.contact-form{padding:40px 36px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.field{display:flex;flex-direction:column;gap:8px}
.field--full{grid-column:1 / -1}
.field label{font-size:13.5px;color:var(--c-ink-2);font-weight:500}
.field input,.field select,.field textarea{
  height:44px;padding:0 14px;border:1px solid var(--c-line);border-radius:var(--r-btn);
  background:var(--c-surface);transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.field textarea{height:auto;min-height:104px;padding:12px 14px;resize:vertical;line-height:1.7}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--c-primary);border-width:1.5px;
  box-shadow:0 0 0 3px rgba(14,90,85,.12);
}
.field.has-error input,.field.has-error select,.field.has-error textarea{border-color:var(--c-err)}
.field .err-msg{font-size:12.5px;color:var(--c-err);display:none}
.field.has-error .err-msg{display:block}
.form-note{font-size:12.5px;color:var(--c-ink-3);margin-top:14px}
.form-success{
  display:none;align-items:center;gap:10px;margin-top:18px;
  background:var(--c-primary-100);border:1px solid #CFE2DE;color:var(--c-primary-800);
  border-radius:var(--r-btn);padding:12px 16px;font-size:14.5px;
}
.form-success.is-visible{display:flex}
.form-success svg{width:18px;height:18px;color:var(--c-ok);flex:0 0 auto}

/* ---------- CTA 条 ---------- */
.cta-strip{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:32px 36px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px;
  box-shadow:var(--sh-1);
}
.cta-strip p{font-size:18px;font-weight:600;max-width:52ch}
.cta-strip span{display:block;font-size:14px;font-weight:400;color:var(--c-ink-2);margin-top:6px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-primary-800);color:#E8EAE4;margin-top:88px}
.footer-grid{display:grid;grid-template-columns:4fr 2fr 2fr 3fr;gap:40px;padding:64px 24px 48px}
.site-footer .brand-name{color:#fff}
.site-footer .brand-mark{background:rgba(255,255,255,.12)}
.site-footer .brand-mark svg{color:#fff}
.footer-brand p{font-size:14px;color:#B9C7C3;line-height:1.85;margin-top:18px;max-width:34ch}
.footer-contact{margin-top:18px;display:grid;gap:8px;font-size:14px;color:#B9C7C3}
.footer-col h3{font-size:13px;letter-spacing:.08em;text-transform:uppercase;color:#fff;margin-bottom:18px;font-weight:600}
.footer-col ul{display:grid;gap:11px}
.footer-col a,.footer-col li{font-size:14px;color:#B9C7C3;transition:color .18s var(--ease)}
.footer-col a:hover{color:var(--c-sand)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14);
  padding:22px 24px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:#9FB0AB;
}
.footer-bottom a{color:#B9C7C3}
.footer-bottom a:hover{color:var(--c-sand)}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(8px);transition:opacity .22s var(--ease),transform .22s var(--ease)}
.reveal.is-visible{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .container{max-width:1080px}
  .services{grid-template-columns:repeat(2,1fr)}
  .service-card--lead{grid-column:span 2}
  .service-cta{grid-column:span 2}
  .metrics{grid-template-columns:repeat(4,1fr);gap:18px}
  .metric-value .num{font-size:34px}
}
@media (max-width:1023px){
  .section{padding:64px 0}
  .hero{padding:44px 0 0}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-figure{order:2}
  .hero-float{left:16px;bottom:-18px}
  .hero-sub{max-width:none}
  .metrics{grid-template-columns:repeat(2,1fr)}
  .news-feature{grid-template-columns:1fr}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .contact-card{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:2fr 1fr 1fr;gap:32px}
  .footer-col:last-child{grid-column:1 / -1}
}
@media (max-width:767px){
  .container{padding:0 18px}
  body{font-size:16px}
  .section{padding:48px 0}
  .nav-toggle{display:block}
  .nav-links{
    position:fixed;inset:72px 0 0 0;background:var(--c-surface);
    flex-direction:column;align-items:stretch;gap:4px;padding:20px 18px 40px;
    transform:translateX(100%);transition:transform .22s var(--ease);
    border-top:1px solid var(--c-line);overflow-y:auto;
  }
  .nav-links.is-open{transform:translateX(0)}
  .nav-links > a{font-size:18px;padding:14px 12px;border-radius:var(--r-md)}
  .nav-cta{text-align:center;margin-top:12px;padding:14px 18px!important;font-size:17px!important}
  .hero-stats{gap:12px}
  .hero-divider{display:none}
  .metrics{grid-template-columns:repeat(2,1fr);gap:16px}
  .metric{padding:18px}
  .metric-value .num{font-size:30px}
  .services{grid-template-columns:1fr}
  .service-card--lead{grid-column:span 1;grid-template-columns:1fr}
  .service-cta{grid-column:span 1}
  .compare{grid-template-columns:1fr}
  .compare-divider{display:none}
  .compare-col{padding:26px 22px}
  .compare-col--entry{border-top:1px solid var(--c-primary)}
  .news-grid{grid-template-columns:1fr}
  .news-feature-body{padding:22px}
  .faq-a p{padding-left:0}
  .form-grid{grid-template-columns:1fr}
  .contact-aside,.contact-form{padding:28px 22px}
  .cta-strip{padding:26px 22px}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding:48px 18px 32px}
  .footer-col:last-child{grid-column:auto}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .seal{display:none}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms!important;transition-duration:.01ms!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: article */
:root{
  --c-primary:#0E5A55;
  --c-primary-800:#0A423E;
  --c-primary-100:#E3EFEC;
  --c-accent:#D8622E;
  --c-accent-600:#C25427;
  --c-sand:#E4C89A;
  --c-bg:#F6F4EF;
  --c-surface:#FFFFFF;
  --c-surface-2:#ECE8E0;
  --c-line:#DCD8CF;
  --c-ink:#1B2321;
  --c-ink-2:#4A5551;
  --c-ink-3:#7C8781;
  --c-ok:#2F7D5A;
  --c-err:#C2503C;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:18px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(27,35,33,.06);
  --sh-2:0 12px 28px -14px rgba(14,90,85,.22);
  --sh-3:0 22px 48px -22px rgba(14,90,85,.30);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font-sans:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
  --font-mono:ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;
  --header-h:72px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--c-primary);text-decoration:none;transition:color .2s var(--ease),background-color .2s var(--ease),border-color .2s var(--ease)}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.mono{font-family:var(--font-mono)}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.92);
  border-bottom:1px solid transparent;
  transition:background-color .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.site-header.scrolled{
  background:rgba(255,255,255,.98);
  border-bottom:1px solid var(--c-line);
  box-shadow:var(--sh-1);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;height:var(--header-h)}
.brand{display:inline-flex;align-items:center;gap:10px;height:36px;color:var(--c-primary-800);font-weight:700}
.brand-mark{display:inline-flex;width:30px;height:30px;flex:0 0 30px}
.brand-mark svg{width:100%;height:100%}
.brand-name{font-size:18px;letter-spacing:.01em;white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:28px;font-size:14.5px;font-weight:500}
.nav-links a{color:var(--c-ink-2);padding:8px 12px;border-radius:var(--r-pill);white-space:nowrap}
.nav-links a:hover{color:var(--c-primary);background:var(--c-primary-100)}
.nav-links a.is-active{color:var(--c-primary);background:var(--c-primary-100)}
.nav-links a.nav-cta{
  display:inline-flex;align-items:center;height:30px;padding:0 15px;
  background:var(--c-accent);color:#fff;font-size:13.5px;border-radius:var(--r-sm);
}
.nav-links a.nav-cta:hover{background:var(--c-accent-600);transform:translateY(-1px);box-shadow:var(--sh-2);color:#fff}
.nav-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--c-line);border-radius:var(--r-sm);
  background:var(--c-surface);cursor:pointer;padding:0;position:relative;
}
.nav-toggle span{
  position:absolute;left:11px;right:11px;height:2px;background:var(--c-primary-800);border-radius:2px;
  transition:transform .22s var(--ease),opacity .22s var(--ease);
}
.nav-toggle span:nth-child(1){top:14px}
.nav-toggle span:nth-child(2){top:20px}
.nav-toggle span:nth-child(3){top:26px}
.nav-toggle.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ============ 按钮 / 徽章 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:10px;border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;transition:all .2s var(--ease);
}
.btn-accent{background:var(--c-accent);color:#fff}
.btn-accent:hover{background:var(--c-accent-600);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn-ghost{border-color:var(--c-primary);color:var(--c-primary);background:transparent}
.btn-ghost:hover{background:var(--c-primary-100);color:var(--c-primary)}
.btn-sm{height:38px;padding:0 18px;font-size:14px}
.badge{
  display:inline-flex;align-items:center;height:22px;padding:0 10px;border-radius:var(--r-pill);
  background:var(--c-primary-100);color:var(--c-primary);font-size:11.5px;font-weight:600;letter-spacing:.02em;
}
.badge-accent{background:rgba(216,98,46,.12);color:var(--c-accent)}

/* ============ 文章头部 ============ */
.page-head{background:var(--c-surface);border-bottom:1px solid var(--c-line);padding:24px 0 46px}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--c-ink-3)}
.breadcrumb a{color:var(--c-ink-3)}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb .sep{color:var(--c-line)}
.breadcrumb .current{color:var(--c-ink-2);max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.head-grid{display:grid;grid-template-columns:1.45fr 1fr;gap:44px;align-items:center;margin-top:26px}
.eyebrow{
  display:inline-block;font-size:12.5px;letter-spacing:.08em;color:var(--c-primary);
  font-weight:600;text-transform:uppercase;
}
.article-title{
  font-size:clamp(28px,3.4vw,42px);line-height:1.3;font-weight:700;letter-spacing:-.01em;
  color:var(--c-ink);margin:14px 0 18px;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;font-size:14px;color:var(--c-ink-3)}
.article-meta .meta-item{display:inline-flex;align-items:center;gap:7px}
.article-meta .meta-item svg{width:15px;height:15px;flex:0 0 15px;stroke:var(--c-primary);fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--c-line)}
.head-figure{position:relative}
.head-figure img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-md);box-shadow:var(--sh-2)}
.head-figure::after{
  content:"";position:absolute;left:-10px;bottom:-10px;width:56px;height:56px;
  border-left:1px solid rgba(228,200,154,.9);border-bottom:1px solid rgba(228,200,154,.9);
  border-radius:0 0 0 12px;
}

/* ============ 正文 ============ */
.article-wrap{padding:52px 0 20px}
.article-body{
  max-width:780px;margin:0 auto;font-size:16px;line-height:1.95;color:var(--c-ink-2);
  overflow-wrap:break-word;word-break:break-word;
}
.article-body p{margin:0 0 18px}
.article-body h2{
  font-size:clamp(21px,2.2vw,26px);line-height:1.4;font-weight:700;color:var(--c-ink);
  margin:42px 0 14px;padding-left:14px;border-left:4px solid var(--c-accent);
}
.article-body h3{font-size:19px;line-height:1.5;font-weight:600;color:var(--c-ink);margin:28px 0 10px}
.article-body h4{font-size:17px;font-weight:600;color:var(--c-ink);margin:22px 0 8px}
.article-body ul,.article-body ol{margin:0 0 18px;padding-left:22px}
.article-body li{margin:6px 0}
.article-body ul{list-style:disc}
.article-body ol{list-style:decimal}
.article-body blockquote{
  margin:22px 0;padding:14px 20px;background:var(--c-primary-100);
  border-left:4px solid var(--c-primary);border-radius:0 var(--r-sm) var(--r-sm) 0;color:var(--c-ink-2);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--r-md);margin:22px auto;height:auto}
.article-body figure{margin:22px 0}
.article-body figcaption{font-size:13px;color:var(--c-ink-3);text-align:center;margin-top:8px}
.article-body table{width:100%;border-collapse:collapse;margin:22px 0;font-size:15px;background:var(--c-surface)}
.article-body th,.article-body td{border:1px solid var(--c-line);padding:10px 14px;text-align:left}
.article-body th{background:var(--c-primary-100);color:var(--c-primary-800);font-weight:600}
.article-body tbody tr:nth-child(even){background:var(--c-surface-2)}
.article-body pre{
  margin:22px 0;padding:16px 18px;background:var(--c-surface-2);border:1px solid var(--c-line);
  border-radius:var(--r-md);overflow-x:auto;font-family:var(--font-mono);font-size:14px;line-height:1.7;
}
.article-body code{font-family:var(--font-mono);font-size:.92em;background:var(--c-surface-2);padding:1px 6px;border-radius:6px}
.article-body pre code{background:none;padding:0;font-size:14px}
.article-body a{color:var(--c-primary);border-bottom:1px solid rgba(14,90,85,.32)}
.article-body a:hover{border-bottom-color:var(--c-primary);color:var(--c-primary-800)}
.article-body hr{border:none;border-top:1px solid var(--c-line);margin:32px 0}
.article-body strong{color:var(--c-ink);font-weight:600}

.note-strip{
  max-width:780px;margin:36px auto 0;padding:16px 20px;background:var(--c-surface);
  border:1px solid var(--c-line);border-left:4px solid var(--c-sand);border-radius:var(--r-sm);
  display:flex;gap:14px;align-items:flex-start;
}
.note-strip svg{width:20px;height:20px;flex:0 0 20px;margin-top:3px;stroke:var(--c-primary);fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.note-strip p{font-size:14.5px;line-height:1.8;color:var(--c-ink-2);margin:0}

.empty-state{max-width:780px;margin:0 auto;text-align:center;padding:60px 24px;background:var(--c-surface);border:1px solid var(--c-line);border-radius:14px}
.empty-state h2{font-size:22px;color:var(--c-ink);margin-bottom:10px}
.empty-state p{color:var(--c-ink-3);margin-bottom:22px}

/* ============ 相关入口 ============ */
.related{background:var(--c-surface);border-top:1px solid var(--c-line);padding:64px 0 68px;margin-top:64px}
.related-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:28px}
.related-head h2{font-size:clamp(22px,2.3vw,28px);font-weight:700;color:var(--c-ink);line-height:1.4}
.related-head p{font-size:14.5px;color:var(--c-ink-3);margin-top:8px}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.rel-card{
  display:grid;grid-template-columns:118px 1fr;gap:14px;padding:14px;align-items:center;
  background:var(--c-bg);border:1px solid var(--c-line);border-radius:14px;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--c-primary-100)}
.rel-thumb img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:12px}
.rel-body h3{font-size:16.5px;line-height:1.45;font-weight:600;color:var(--c-ink);margin:8px 0 6px}
.rel-card:hover .rel-body h3{color:var(--c-primary)}
.rel-body p{font-size:13.5px;line-height:1.7;color:var(--c-ink-3);margin:0}
.rel-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:34px}
.rel-foot .mono{font-size:13.5px;color:var(--c-ink-3)}

/* ============ CTA 条 ============ */
.cta-band{background:var(--c-primary-800);color:#F1EFE8;padding:52px 0}
.cta-band-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px}
.cta-band h2{font-size:clamp(21px,2.2vw,27px);line-height:1.45;font-weight:700;color:#fff}
.cta-band p{margin-top:10px;font-size:15px;color:#C6D3D0;max-width:620px}
.cta-band .btn-accent{flex:0 0 auto}
.cta-band .cta-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}
.cta-band .cta-tags span{
  font-size:12.5px;font-family:var(--font-mono);color:#DFE7E4;
  border:1px solid rgba(255,255,255,.22);border-radius:var(--r-pill);padding:3px 12px;
}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-primary-800);color:#EDE9E0;padding-top:64px}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:40px;padding-bottom:46px}
.footer-brand .brand{color:#fff;margin-bottom:16px}
.footer-brand p{font-size:14.5px;line-height:1.85;color:#BFCFCB;max-width:330px}
.footer-contact{list-style:none;margin:18px 0 0;padding:0;display:grid;gap:8px;font-size:14px;color:#BFCFCB}
.footer-contact li{font-family:var(--font-mono);font-size:13.5px}
.footer-col h3{
  font-size:13px;letter-spacing:.08em;font-weight:600;color:var(--c-sand);
  margin-bottom:16px;text-transform:uppercase;
}
.footer-col ul{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.footer-col a{color:#D8E2DF;font-size:14.5px}
.footer-col a:hover{color:var(--c-sand)}
.footer-col li{font-size:14.5px;color:#BFCFCB}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  border-top:1px solid rgba(255,255,255,.15);padding-top:20px;padding-bottom:26px;
  font-size:13.5px;color:#A9BAB6;
}
.footer-bottom p{margin:0}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(8px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *{transition:none!important;animation:none!important}
  .reveal{opacity:1;transform:none}
}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .container{max-width:1080px}
  .related-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:1023px){
  .nav-toggle{display:inline-flex}
  .nav-links{
    position:fixed;left:0;right:0;top:0;bottom:0;z-index:55;
    flex-direction:column;align-items:stretch;gap:4px;
    background:var(--c-surface);padding:calc(var(--header-h) + 20px) 24px 32px;
    font-size:18px;transform:translateX(100%);visibility:hidden;
    transition:transform .22s var(--ease),visibility .22s var(--ease);
    overflow-y:auto;
  }
  .nav-links.is-open{transform:none;visibility:visible}
  .nav-links a{padding:14px 12px;border-radius:var(--r-sm);font-size:18px}
  .nav-links a.nav-cta{height:46px;justify-content:center;font-size:16px;margin-top:14px}
  .nav-toggle{z-index:70;position:relative}
  .head-grid{grid-template-columns:1fr;gap:28px}
  .head-figure{order:-1}
  .head-figure img{aspect-ratio:21/9}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  :root{--header-h:64px}
  .container{padding:0 18px}
  .brand-name{font-size:16.5px}
  .page-head{padding:18px 0 34px}
  .article-title{font-size:clamp(24px,6.4vw,32px)}
  .breadcrumb .current{max-width:180px}
  .article-wrap{padding:36px 0 12px}
  .article-body{font-size:16px;line-height:1.9}
  .related{padding:48px 0 52px;margin-top:44px}
  .related-grid{grid-template-columns:1fr}
  .rel-foot{flex-direction:column;align-items:flex-start}
  .cta-band{padding:40px 0}
  .cta-band-inner{flex-direction:column;align-items:flex-start}
  .cta-band .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:30px;padding-bottom:34px}
  .footer-bottom{flex-direction:column}
}

/* roulang page: category1 */
:root{
  --c-primary:#0E5A55;
  --c-primary-800:#0A423E;
  --c-primary-100:#E3EFEC;
  --c-accent:#D8622E;
  --c-accent-600:#C25526;
  --c-sand:#E4C89A;
  --c-bg:#F6F4EF;
  --c-surface:#FFFFFF;
  --c-surface-2:#ECE8E0;
  --c-line:#DCD8CF;
  --c-ink:#1B2321;
  --c-ink-2:#4A5551;
  --c-ink-3:#7C8781;
  --c-ok:#2F7D5A;
  --c-err:#C2503C;
  --r-sm:8px;--r-md:12px;--r-lg:18px;--r-pill:999px;
  --sh-1:0 1px 2px rgba(27,35,33,.06);
  --sh-2:0 12px 28px -14px rgba(14,90,85,.22);
  --sh-3:0 22px 48px -22px rgba(14,90,85,.30);
  --ease:cubic-bezier(.2,.7,.3,1);
  --sect:88px;
  --font-sans:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
  --font-mono:ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;background:var(--c-bg);color:var(--c-ink);
  font-family:var(--font-sans);font-size:16px;line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--c-primary);text-decoration:none;}
a:hover{color:var(--c-accent);}
button{font-family:inherit;}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul,ol{padding:0;list-style:none;}
h1{font-size:clamp(30px,4.2vw,50px);font-weight:700;letter-spacing:-.01em;line-height:1.25;}
h2{font-size:clamp(24px,2.6vw,34px);font-weight:700;line-height:1.35;letter-spacing:-.005em;}
h3{font-size:20px;line-height:1.5;font-weight:700;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:4px;}
.container{max-width:1200px;margin:0 auto;padding:0 24px;}
.mono{font-family:var(--font-mono);}
.eyebrow{font-size:12.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--c-primary);font-weight:600;}
.muted{color:var(--c-ink-3);}
.lead{font-size:17px;color:var(--c-ink-2);}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.92);
  border-bottom:1px solid transparent;
  transition:background .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.site-header.is-scrolled{background:rgba(255,255,255,.98);border-bottom-color:var(--c-line);box-shadow:var(--sh-1);}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:66px;}
.brand{display:inline-flex;align-items:center;gap:10px;height:36px;color:var(--c-ink);}
.brand:hover{color:var(--c-ink);}
.brand-mark{width:30px;height:30px;display:inline-flex;align-items:center;justify-content:center;
  background:var(--c-primary-100);border-radius:9px;color:var(--c-primary);}
.brand-mark svg{width:22px;height:22px;}
.brand-name{font-size:17px;font-weight:700;letter-spacing:-.01em;white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:28px;}
.nav-links a{
  font-size:14.5px;font-weight:500;color:var(--c-ink-2);
  padding:6px 12px;border-radius:var(--r-pill);
  transition:color .18s var(--ease),background .18s var(--ease);
}
.nav-links a:hover{color:var(--c-primary);background:var(--c-primary-100);}
.nav-links a.is-active{color:var(--c-primary);background:var(--c-primary-100);font-weight:600;}
.nav-links a.nav-cta{
  background:var(--c-accent);color:#fff;height:30px;display:inline-flex;align-items:center;
  padding:0 16px;border-radius:var(--r-sm);font-weight:600;
}
.nav-links a.nav-cta:hover{background:var(--c-accent-600);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2);}
.nav-toggle{display:none;width:42px;height:38px;border:1px solid var(--c-line);background:#fff;border-radius:var(--r-sm);
  cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:5px;}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--c-primary);border-radius:2px;transition:transform .2s var(--ease),opacity .2s var(--ease);}
body.nav-open .nav-toggle span:nth-child(1){transform:translateY(7px) rotate(45deg);}
body.nav-open .nav-toggle span:nth-child(2){opacity:0;}
body.nav-open .nav-toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ---------- buttons ---------- */
.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:15px;font-weight:600;cursor:pointer;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);}
.btn-primary{background:var(--c-accent);color:#fff;}
.btn-primary:hover{background:var(--c-accent-600);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn-ghost{background:transparent;border-color:var(--c-primary);color:var(--c-primary);}
.btn-ghost:hover{background:var(--c-primary-100);color:var(--c-primary);}
.btn-block{width:100%;}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}

/* ---------- hero ---------- */
.page-hero{padding:44px 0 64px;}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--c-ink-3);margin-bottom:22px;}
.crumbs a{color:var(--c-ink-3);}
.crumbs a:hover{color:var(--c-primary);}
.crumbs .sep{color:var(--c-line);}
.crumbs .current{color:var(--c-primary);font-weight:600;}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;}
.hero-title{margin:14px 0 18px;}
.hero-sub{max-width:36ch;margin-bottom:26px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;}
.hero-visual{position:relative;}
.hero-visual img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-md);box-shadow:var(--sh-3);}
.hero-badge{
  position:absolute;left:-18px;bottom:24px;background:#fff;border:1px solid var(--c-line);
  border-radius:var(--r-md);box-shadow:var(--sh-2);padding:14px 18px;min-width:150px;
}
.hero-badge .num{font-family:var(--font-mono);font-size:24px;font-weight:700;color:var(--c-primary);line-height:1.2;}
.hero-badge .lab{font-size:12.5px;letter-spacing:.06em;color:var(--c-ink-3);}
.seal{
  position:absolute;top:-12px;right:-12px;width:52px;height:52px;border-radius:12px;
  background:var(--c-sand);opacity:.55;
}

/* ---------- layout ---------- */
.section{padding-top:var(--sect);}
.section-head{max-width:760px;margin-bottom:28px;}
.section-head h2{margin-bottom:10px;}
.layout{display:grid;grid-template-columns:8fr 4fr;gap:48px;align-items:start;}

/* ---------- flow rows ---------- */
.flow-row{display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:center;margin-bottom:44px;}
.flow-row:last-child{margin-bottom:0;}
.flow-text h3{margin-bottom:12px;}
.flow-text p{color:var(--c-ink-2);margin-bottom:14px;}
.flow-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:12px;box-shadow:var(--sh-1);}
.flow-row.reverse .flow-media{order:2;}
.flow-row.reverse .flow-text{order:1;}

/* ---------- lists ---------- */
.check-list li{display:flex;gap:10px;align-items:flex-start;color:var(--c-ink-2);margin-bottom:10px;}
.check-list li svg{flex:none;margin-top:6px;color:var(--c-ok);}
.num-list{counter-reset:n;}
.num-list li{position:relative;padding-left:40px;margin-bottom:14px;color:var(--c-ink-2);}
.num-list li::before{
  counter-increment:n;content:counter(n,decimal-leading-zero);
  position:absolute;left:0;top:2px;font-family:var(--font-mono);font-size:13px;font-weight:700;
  color:var(--c-accent);background:rgba(216,98,46,.12);border-radius:6px;padding:2px 7px;
}

/* ---------- cards & misc ---------- */
.note-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-left:4px solid var(--c-accent);
  border-radius:14px;padding:20px 22px;box-shadow:var(--sh-1);margin:26px 0;
}
.note-card h3{font-size:17px;margin-bottom:8px;}
.note-card p{color:var(--c-ink-2);font-size:15px;}
.badge{display:inline-block;font-size:11.5px;font-weight:600;color:var(--c-primary);
  background:var(--c-primary-100);border-radius:var(--r-pill);padding:3px 10px;letter-spacing:.02em;}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0 0;}
.tag{font-size:13px;color:var(--c-ink-2);background:var(--c-surface-2);border-radius:var(--r-pill);padding:5px 12px;}

/* ---------- faq ---------- */
.faq-wrap{max-width:840px;margin:0 auto;}
.faq-item{border-bottom:1px solid var(--c-line);}
.faq-q{
  width:100%;background:none;border:0;cursor:pointer;text-align:left;
  display:flex;gap:16px;align-items:flex-start;padding:20px 0;
  font-size:17px;font-weight:600;color:var(--c-ink);transition:color .18s var(--ease);
}
.faq-q .idx{font-family:var(--font-mono);font-size:14px;color:var(--c-accent);flex:none;padding-top:4px;}
.faq-q .chev{margin-left:auto;flex:none;color:var(--c-ink-3);transition:transform .22s var(--ease);padding-top:4px;}
.faq-item.is-open .faq-q{color:var(--c-primary);}
.faq-item.is-open .faq-q .chev{transform:rotate(180deg);color:var(--c-primary);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s var(--ease);}
.faq-item.is-open .faq-a{max-height:320px;}
.faq-a p{font-size:15px;line-height:1.9;color:var(--c-ink-2);padding:0 0 20px 32px;}

/* ---------- sidebar ---------- */
.sidebar{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px;}
.side-card{background:var(--c-surface);border:1px solid var(--c-line);border-radius:14px;padding:22px;box-shadow:var(--sh-1);}
.side-card h3{font-size:15px;letter-spacing:.02em;margin-bottom:14px;color:var(--c-ink);}
.side-nav li + li{border-top:1px dashed var(--c-line);}
.side-nav a{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:11px 0;font-size:14.5px;color:var(--c-ink-2);}
.side-nav a:hover{color:var(--c-primary);}
.side-nav a svg{color:var(--c-ink-3);flex:none;transition:transform .18s var(--ease),color .18s var(--ease);}
.side-nav a:hover svg{color:var(--c-accent);transform:translateX(3px);}
.side-contact li{font-size:14px;color:var(--c-ink-2);display:flex;gap:10px;align-items:flex-start;margin-bottom:10px;}
.side-contact li:last-child{margin-bottom:0;}
.side-contact svg{flex:none;margin-top:5px;color:var(--c-primary);}
.side-cta{background:var(--c-primary-100);border-color:transparent;}
.side-cta p{font-size:14px;color:var(--c-ink-2);margin-bottom:14px;}

/* ---------- cta band ---------- */
.cta-band{
  margin-top:var(--sect);
  background:var(--c-primary-800);color:#F6F4EF;border-radius:var(--r-lg);
  padding:40px 44px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
}
.cta-band h2{color:#fff;font-size:clamp(22px,2.2vw,28px);margin-bottom:8px;}
.cta-band p{color:rgba(246,244,239,.78);font-size:15px;max-width:62ch;}

/* ---------- footer ---------- */
.site-footer{background:var(--c-primary-800);color:#EFEDE6;margin-top:var(--sect);padding-top:64px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px;}
.footer-brand .brand{color:#fff;height:auto;margin-bottom:14px;}
.footer-brand .brand-name{color:#fff;}
.footer-brand .brand-mark{background:rgba(255,255,255,.12);}
.footer-brand p{font-size:14px;color:rgba(239,237,230,.72);max-width:34ch;}
.footer-contact{margin-top:14px;}
.footer-contact li{font-size:14px;color:rgba(239,237,230,.72);margin-bottom:6px;}
.footer-col h3{font-size:13px;letter-spacing:.08em;text-transform:uppercase;color:rgba(239,237,230,.62);margin-bottom:16px;font-weight:600;}
.footer-col li{margin-bottom:10px;}
.footer-col a{font-size:14.5px;color:#EFEDE6;}
.footer-col a:hover{color:var(--c-accent);}
.footer-col li span{font-size:14.5px;color:rgba(239,237,230,.72);}
.footer-bottom{
  margin-top:44px;border-top:1px solid rgba(255,255,255,.14);
  padding:20px 24px 28px;display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
}
.footer-bottom p{font-size:13.5px;color:rgba(239,237,230,.62);}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(8px);transition:opacity .5s var(--ease),transform .5s var(--ease);}
.reveal.is-in{opacity:1;transform:none;}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .container{max-width:1080px;}
  .hero-grid{gap:36px;}
}
@media (max-width:1023px){
  :root{--sect:64px;}
  .hero-grid{grid-template-columns:1fr;gap:32px;}
  .hero-sub{max-width:none;}
  .layout{grid-template-columns:1fr;gap:36px;}
  .sidebar{position:static;}
  .nav-links{gap:14px;}
  .nav-links a{padding:6px 9px;font-size:14px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:767px){
  :root{--sect:48px;}
  .container{padding:0 18px;}
  .nav-toggle{display:inline-flex;}
  .nav-links{
    position:fixed;left:0;right:0;top:66px;bottom:0;background:#fff;
    flex-direction:column;align-items:stretch;gap:0;padding:18px 18px 40px;
    transform:translateY(-10px);opacity:0;visibility:hidden;overflow-y:auto;
    transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s var(--ease);
    border-top:1px solid var(--c-line);
  }
  .nav-links.is-open{opacity:1;visibility:visible;transform:none;}
  .nav-links a{font-size:18px;padding:14px 4px;border-radius:0;border-bottom:1px solid var(--c-line);}
  .nav-links a.nav-cta{height:46px;justify-content:center;margin-top:18px;border-bottom:0;border-radius:10px;font-size:16px;}
  .page-hero{padding:28px 0 44px;}
  .flow-row{grid-template-columns:1fr;gap:20px;}
  .flow-row.reverse .flow-media{order:0;}
  .flow-row.reverse .flow-text{order:0;}
  .hero-badge{left:12px;bottom:12px;padding:10px 14px;min-width:120px;}
  .cta-band{padding:28px 22px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;}
  .faq-a p{padding-left:0;}
}
@media (max-width:520px){
  .hero-title{margin:10px 0 14px;}
  .btn{width:100%;}
  .hero-actions{gap:10px;}
  .hero-badge{position:static;margin-top:12px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category2 */
/* ===== 设计变量 ===== */
:root{
  --c-primary:#0E5A55;
  --c-primary-800:#0A423E;
  --c-primary-100:#E3EFEC;
  --c-accent:#D8622E;
  --c-accent-dark:#BF5526;
  --c-sand:#E4C89A;
  --c-bg:#F6F4EF;
  --c-surface:#FFFFFF;
  --c-surface-2:#ECE8E0;
  --c-line:#DCD8CF;
  --c-ink:#1B2321;
  --c-ink-2:#4A5551;
  --c-ink-3:#7C8781;
  --c-success:#2F7D5A;
  --c-danger:#C2503C;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:18px;
  --r-card:14px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(27,35,33,.06);
  --sh-2:0 12px 28px -14px rgba(14,90,85,.22);
  --sh-3:0 22px 48px -22px rgba(14,90,85,.30);
  --sans:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
  --mono:ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;
  --ease:cubic-bezier(.2,.7,.3,1);
  --sp:88px;
}

/* ===== 基础 reset ===== */
*,*::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(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--c-primary);text-decoration:none;transition:color 180ms var(--ease),background-color 180ms var(--ease);}
a:hover{color:var(--c-accent);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
table{border-collapse:collapse;width:100%;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:4px;}

/* ===== 容器与通用 ===== */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:var(--sp) 0;}
.section-tight{padding:56px 0;}
.eyebrow{
  font-size:12.5px;
  letter-spacing:.08em;
  color:var(--c-primary);
  font-weight:600;
  margin-bottom:10px;
}
.section-head{max-width:760px;margin-bottom:28px;}
.section-head h2{font-size:clamp(24px,2.6vw,34px);font-weight:700;line-height:1.35;letter-spacing:-.01em;}
.section-head p{margin-top:12px;color:var(--c-ink-2);}
.mono{font-family:var(--mono);}

/* ===== 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;
  border:1px solid transparent;
  transition:transform 180ms var(--ease),background-color 180ms var(--ease),box-shadow 180ms var(--ease),color 180ms var(--ease),border-color 180ms var(--ease);
}
.btn-primary{background:var(--c-accent);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover,.btn-primary:focus-visible{background:var(--c-accent-dark);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;color:var(--c-primary);border-color:var(--c-primary);}
.btn-ghost:hover,.btn-ghost:focus-visible{background:var(--c-primary-100);color:var(--c-primary-800);}
.btn-block{width:100%;height:48px;}
.btn[disabled]{opacity:.55;cursor:not-allowed;transform:none;box-shadow:none;}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--c-primary);}
.link-more::after{content:"→";transition:transform 180ms var(--ease);}
.link-more:hover::after{transform:translateX(3px);}

/* ===== 导航 ===== */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(255,255,255,.92);
  border-bottom:1px solid transparent;
  transition:background-color 200ms var(--ease),box-shadow 200ms var(--ease),border-color 200ms var(--ease);
}
.site-header.is-scrolled{background:rgba(255,255,255,.98);border-bottom-color:var(--c-line);box-shadow:var(--sh-1);}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;min-height:68px;gap:20px;}
.brand{display:inline-flex;align-items:center;gap:10px;height:36px;color:var(--c-ink);}
.brand:hover{color:var(--c-ink);}
.brand-mark{width:30px;height:30px;display:inline-flex;align-items:center;justify-content:center;color:var(--c-primary);}
.brand-mark svg{width:100%;height:100%;}
.brand-name{font-size:17px;font-weight:700;letter-spacing:.01em;white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:28px;}
.nav-links a{
  font-size:14.5px;
  font-weight:500;
  color:var(--c-ink-2);
  padding:6px 12px;
  border-radius:var(--r-pill);
  white-space:nowrap;
}
.nav-links a:hover{color:var(--c-primary);background:var(--c-primary-100);}
.nav-links a.is-active{color:var(--c-primary);background:var(--c-primary-100);font-weight:600;}
.nav-links .nav-cta{
  height:30px;
  display:inline-flex;
  align-items:center;
  padding:0 16px;
  background:var(--c-accent);
  color:#fff;
  border-radius:var(--r-pill);
  font-weight:600;
  font-size:14px;
}
.nav-links .nav-cta:hover{background:var(--c-accent-dark);color:#fff;}
.nav-toggle{
  display:none;
  width:42px;height:42px;
  border-radius:10px;
  border:1px solid var(--c-line);
  background:#fff;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--c-primary);border-radius:2px;transition:transform 200ms var(--ease),opacity 200ms var(--ease);}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ===== 面包屑 ===== */
.breadcrumb{margin-bottom:14px;}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--c-ink-3);}
.breadcrumb li::after{content:"/";margin-left:8px;color:var(--c-line);}
.breadcrumb li:last-child::after{display:none;}
.breadcrumb a{color:var(--c-ink-2);}
.breadcrumb a:hover{color:var(--c-accent);}
.breadcrumb [aria-current="page"]{color:var(--c-primary);font-weight:600;}

/* ===== 分类 Hero ===== */
.cat-hero{
  position:relative;
  padding:52px 0 56px;
  background:linear-gradient(180deg,var(--c-primary-100) 0%,rgba(246,244,239,0) 100%);
  border-bottom:1px solid var(--c-line);
  overflow:hidden;
}
.cat-hero::after{
  content:"";
  position:absolute;
  right:32px;top:26px;
  width:44px;height:44px;
  border:1px solid rgba(14,90,85,.22);
  border-radius:6px;
  opacity:.55;
  pointer-events:none;
}
.cat-hero-inner{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;position:relative;z-index:1;}
.cat-hero h1{font-size:clamp(28px,3.4vw,42px);font-weight:700;line-height:1.25;letter-spacing:-.01em;}
.cat-hero-sub{margin-top:16px;font-size:17px;color:var(--c-ink-2);max-width:34ch;}
.cat-hero-media img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:14px;box-shadow:var(--sh-2);background:var(--c-surface-2);}

/* ===== 主双栏 ===== */
.layout{display:grid;grid-template-columns:8fr 4fr;gap:44px;align-items:start;}
.article-body{max-width:100%;}
.article-body .block + .block{margin-top:44px;}
.article-body h2{
  position:relative;
  font-size:clamp(21px,2vw,26px);
  font-weight:700;
  line-height:1.4;
  padding-left:14px;
  margin-bottom:16px;
}
.article-body h2::before{
  content:"";
  position:absolute;
  left:0;top:.32em;
  width:4px;height:1.05em;
  border-radius:2px;
  background:var(--c-accent);
}
.article-body p{color:var(--c-ink-2);margin-bottom:14px;}
.article-body h3{font-size:18px;font-weight:700;margin:22px 0 10px;}
.figure{margin:22px 0 0;}
.figure img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:12px;background:var(--c-surface-2);box-shadow:var(--sh-1);}
.figure figcaption{margin-top:10px;font-size:13px;color:var(--c-ink-3);}

/* 要点列表 */
.check-list{display:grid;gap:10px;margin:6px 0 4px;}
.check-list li{
  position:relative;
  padding-left:28px;
  font-size:15.5px;
  color:var(--c-ink-2);
  line-height:1.8;
}
.check-list li::before{
  content:"✓";
  position:absolute;left:0;top:1px;
  width:18px;height:18px;
  display:flex;align-items:center;justify-content:center;
  border-radius:50%;
  background:var(--c-primary-100);
  color:var(--c-primary);
  font-size:11px;
  font-weight:700;
}
.check-list strong{color:var(--c-ink);font-weight:600;}

/* ===== 侧栏 ===== */
.sidebar{position:sticky;top:92px;display:grid;gap:20px;}
.side-card{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:22px;
  box-shadow:var(--sh-1);
}
.side-card h3{
  font-size:13px;
  letter-spacing:.08em;
  text-transform:uppercase;
  color:var(--c-ink-3);
  font-weight:600;
  margin-bottom:14px;
}
.side-nav li + li{border-top:1px solid var(--c-line);}
.side-nav a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  padding:11px 0;
  font-size:14.5px;
  color:var(--c-ink-2);
  font-weight:500;
}
.side-nav a::after{content:"→";color:var(--c-ink-3);font-size:13px;}
.side-nav a:hover{color:var(--c-primary);}
.side-nav a.is-current{color:var(--c-primary);font-weight:600;}
.side-nav a.is-current::after{color:var(--c-primary);}
.side-contact li{font-size:14.5px;color:var(--c-ink-2);padding:6px 0;}
.side-contact .k{display:block;font-size:12.5px;letter-spacing:.08em;color:var(--c-ink-3);margin-bottom:2px;}
.side-cta{background:var(--c-primary-800);border-color:var(--c-primary-800);color:#F6F4EF;}
.side-cta h3{color:rgba(246,244,239,.72);}
.side-cta p{font-size:14.5px;color:rgba(246,244,239,.86);margin-bottom:16px;}

/* ===== 特性网格（两列） ===== */
.feature-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;}
.feature-card{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:24px;
  box-shadow:var(--sh-1);
  transition:transform 200ms var(--ease),box-shadow 200ms var(--ease),border-color 200ms var(--ease);
}
.feature-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#CFE2DE;}
.feature-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px;}
.f-num{
  font-family:var(--mono);
  font-size:12.5px;
  font-weight:700;
  color:var(--c-accent);
  background:rgba(216,98,46,.12);
  border-radius:var(--r-sm);
  padding:3px 8px;
  letter-spacing:.04em;
}
.f-icon{width:24px;height:24px;color:var(--c-primary);}
.f-icon svg{width:100%;height:100%;}
.feature-card h3{font-size:18px;font-weight:700;line-height:1.5;margin-bottom:8px;}
.feature-card p{font-size:14px;color:var(--c-ink-2);line-height:1.8;}
.feature-meta{margin-top:14px;display:flex;align-items:center;justify-content:space-between;gap:12px;}
.badge{
  display:inline-flex;
  align-items:center;
  font-size:11.5px;
  font-weight:600;
  color:var(--c-primary);
  background:var(--c-primary-100);
  border-radius:var(--r-pill);
  padding:3px 10px;
  letter-spacing:.02em;
}
.feature-meta .mono{font-size:12.5px;color:var(--c-ink-3);}

/* ===== FAQ ===== */
.faq-wrap{max-width:840px;margin:0 auto;}
.faq-list{border-top:1px solid var(--c-line);}
.faq-item{border-bottom:1px solid var(--c-line);}
.faq-item summary{
  list-style:none;
  display:flex;
  gap:16px;
  align-items:flex-start;
  padding:20px 4px;
  cursor:pointer;
  transition:color 200ms var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-num{font-family:var(--mono);font-size:14px;font-weight:700;color:var(--c-accent);padding-top:2px;}
.faq-q{font-size:17px;font-weight:600;line-height:1.6;color:var(--c-ink);}
.faq-item[open] .faq-q,.faq-item summary:hover .faq-q{color:var(--c-primary);}
.faq-a{padding:0 4px 22px 40px;}
.faq-a p{font-size:15px;line-height:1.9;color:var(--c-ink-2);}

/* ===== CTA 条 ===== */
.cta-band{
  background:var(--c-primary);
  color:#F6F4EF;
  border-radius:var(--r-lg);
  padding:40px 44px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  box-shadow:var(--sh-3);
}
.cta-band h2{font-size:clamp(20px,2.1vw,26px);font-weight:700;line-height:1.45;color:#fff;}
.cta-band p{margin-top:10px;font-size:15px;color:rgba(246,244,239,.85);max-width:56ch;}

/* ===== 页脚 ===== */
.site-footer{background:var(--c-primary-800);color:rgba(246,244,239,.86);margin-top:var(--sp);padding-top:64px;}
.site-footer .brand-name{color:#F6F4EF;}
.site-footer .brand-mark{color:#F6F4EF;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px;padding-bottom:44px;}
.footer-brand p{font-size:14.5px;line-height:1.85;margin-top:16px;max-width:34ch;color:rgba(246,244,239,.78);}
.footer-contact{margin-top:16px;}
.footer-contact li{font-size:14px;color:rgba(246,244,239,.78);padding:3px 0;}
.footer-col h3{
  font-size:13px;
  letter-spacing:.08em;
  text-transform:uppercase;
  font-weight:600;
  color:rgba(246,244,239,.62);
  margin-bottom:16px;
}
.footer-col li{padding:5px 0;}
.footer-col a{font-size:14.5px;color:rgba(246,244,239,.86);}
.footer-col a:hover{color:var(--c-sand);}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:20px 24px 28px;
  border-top:1px solid rgba(246,244,239,.16);
  font-size:13.5px;
  color:rgba(246,244,239,.68);
}

/* ===== 进场动效 ===== */
.reveal{opacity:0;transform:translateY(8px);transition:opacity 220ms var(--ease),transform 220ms var(--ease);}
.reveal.is-in{opacity:1;transform:none;}

/* ===== 断点 ===== */
@media (max-width:1199px){
  .container{max-width:1080px;}
  .feature-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:1023px){
  :root{--sp:64px;}
  .cat-hero-inner{grid-template-columns:1fr;gap:28px;}
  .cat-hero-media img{aspect-ratio:21/9;}
  .layout{grid-template-columns:1fr;gap:36px;}
  .sidebar{position:static;}
  .feature-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:34px 32px;}
}
@media (max-width:767px){
  :root{--sp:48px;}
  .container{padding:0 18px;}
  .nav-toggle{display:flex;}
  .nav-links{
    position:fixed;
    inset:68px 0 0 0;
    background:rgba(246,244,239,.99);
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:18px 20px 40px;
    transform:translateY(-8px);
    opacity:0;
    visibility:hidden;
    transition:opacity 200ms var(--ease),transform 200ms var(--ease),visibility 200ms var(--ease);
    overflow-y:auto;
  }
  .nav-links.is-open{opacity:1;transform:none;visibility:visible;}
  .nav-links a{font-size:18px;padding:15px 4px;border-radius:10px;border-bottom:1px solid var(--c-line);}
  .nav-links .nav-cta{height:46px;justify-content:center;border-bottom:0;margin-top:18px;}
  .feature-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .article-body h2{padding-left:12px;}
  .figure img{aspect-ratio:16/10;}
  .cat-hero{padding:36px 0 40px;}
}
@media (max-width:520px){
  .cat-hero h1{font-size:26px;}
  .cta-band{padding:28px 22px;}
  .btn{width:100%;}
  .link-more{width:auto;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none !important;animation:none !important;}
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category3 */
:root{
  --c-primary:#0E5A55;
  --c-primary-800:#0A423E;
  --c-primary-100:#E3EFEC;
  --c-accent:#D8622E;
  --c-accent-600:#BF5122;
  --c-sand:#E4C89A;
  --c-bg:#F6F4EF;
  --c-surface:#FFFFFF;
  --c-surface-2:#ECE8E0;
  --c-line:#DCD8CF;
  --c-ink:#1B2321;
  --c-ink-2:#4A5551;
  --c-ink-3:#7C8781;
  --ok:#2F7D5A;
  --err:#C2503C;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:18px;
  --r-card:14px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(27,35,33,.06);
  --sh-2:0 12px 28px -14px rgba(14,90,85,.22);
  --sh-3:0 22px 48px -22px rgba(14,90,85,.30);
  --sans:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
  --mono:ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-ink);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--c-primary);text-decoration:none}
a:hover{color:var(--c-accent)}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;line-height:1.35}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.sec{padding:88px 0}
.sec-tight{padding:56px 0}
.sec-alt{background:var(--c-surface)}
.sec-sand{background:linear-gradient(180deg,var(--c-surface-2) 0%,rgba(236,232,224,0) 100%)}
.eyebrow{
  font-size:12.5px;
  letter-spacing:.08em;
  text-transform:uppercase;
  color:var(--c-primary);
  font-weight:600;
  margin-bottom:10px;
}
.sec-head{max-width:760px;margin-bottom:28px}
.sec-head p{margin-top:12px;color:var(--c-ink-2);font-size:15.5px;line-height:1.85}
h1{font-size:clamp(30px,4.2vw,50px);font-weight:700;letter-spacing:-.01em;line-height:1.25}
h2{font-size:clamp(24px,2.6vw,34px);font-weight:700;letter-spacing:-.01em}
h3{font-size:20px;font-weight:700;line-height:1.5}
.mono{font-family:var(--mono)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 26px;
  border-radius:10px;
  border:1px solid transparent;
  font-size:15.5px;
  font-weight:600;
  cursor:pointer;
  transition:background-color .18s var(--ease),color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
  text-decoration:none;
}
.btn-primary{background:var(--c-accent);color:#fff;box-shadow:var(--sh-1)}
.btn-primary:hover{background:var(--c-accent-600);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;border-color:var(--c-primary);color:var(--c-primary)}
.btn-ghost:hover{background:var(--c-primary-100);color:var(--c-primary-800);transform:translateY(-2px)}
.btn-light{background:#F6F4EF;color:var(--c-primary-800);border-color:transparent}
.btn-light:hover{background:#fff;color:var(--c-primary-800);transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn-block{width:100%}
.btn-sm{height:38px;padding:0 18px;font-size:14px;border-radius:9px}
.text-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--c-primary);
  position:relative;
}
.text-link::after{
  content:"";
  position:absolute;
  left:0;right:18px;bottom:-3px;
  height:1px;
  background:currentColor;
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .18s var(--ease);
}
.text-link:hover::after{transform:scaleX(1)}
.text-link svg{width:14px;height:14px;transition:transform .18s var(--ease)}
.text-link:hover svg{transform:translateX(3px)}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(255,255,255,.94);
  border-bottom:1px solid transparent;
  transition:background-color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.98);
  border-bottom-color:var(--c-line);
  box-shadow:var(--sh-1);
}
.nav-wrap{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  min-height:68px;
}
.brand{display:inline-flex;align-items:center;gap:10px;height:36px;flex:none}
.brand:hover{color:inherit}
.brand-mark{
  width:36px;height:36px;
  display:grid;place-items:center;
  background:var(--c-primary-100);
  border-radius:10px;
  flex:none;
}
.brand-mark svg{width:22px;height:22px;color:var(--c-primary)}
.brand-name{font-size:18px;font-weight:700;letter-spacing:-.01em;color:var(--c-ink);white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-links a{
  font-size:14.5px;
  font-weight:500;
  color:var(--c-ink-2);
  padding:6px 12px;
  border-radius:var(--r-pill);
  transition:color .18s var(--ease),background-color .18s var(--ease);
  white-space:nowrap;
}
.nav-links a:hover{color:var(--c-primary);background:var(--c-primary-100)}
.nav-links a.is-active{color:var(--c-primary);background:var(--c-primary-100);font-weight:600}
.nav-links a.nav-cta{
  background:var(--c-accent);
  color:#fff;
  height:30px;
  display:inline-flex;
  align-items:center;
  padding:0 16px;
  font-size:13.5px;
  font-weight:600;
  border-radius:var(--r-pill);
  transition:background-color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease);
}
.nav-links a.nav-cta:hover{background:var(--c-accent-600);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.nav-toggle{
  display:none;
  width:42px;height:38px;
  border:1px solid var(--c-line);
  background:var(--c-surface);
  border-radius:10px;
  padding:9px 10px;
  cursor:pointer;
  flex-direction:column;
  justify-content:space-between;
}
.nav-toggle span{display:block;height:2px;background:var(--c-primary);border-radius:2px;transition:transform .2s var(--ease),opacity .2s var(--ease)}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- 分类页 Hero ---------- */
.cat-hero{
  position:relative;
  padding:32px 0 72px;
  overflow:hidden;
  background:
    radial-gradient(900px 380px at 88% -10%,rgba(228,200,154,.30),rgba(246,244,239,0) 70%),
    var(--c-bg);
}
.cat-hero .seal{
  position:absolute;
  top:34px;right:24px;
  width:46px;height:46px;
  border-radius:12px;
  border:1px solid rgba(14,90,85,.28);
  color:var(--c-primary);
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.06em;
  display:grid;place-items:center;
  opacity:.85;
}
.cloud-line{position:absolute;left:-40px;bottom:-6px;width:420px;height:120px;opacity:.35;pointer-events:none}
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--c-ink-3);
  margin-bottom:22px;
}
.breadcrumb a{color:var(--c-ink-2);border-bottom:1px solid transparent;transition:color .18s var(--ease),border-color .18s var(--ease)}
.breadcrumb a:hover{color:var(--c-primary);border-bottom-color:var(--c-primary)}
.breadcrumb .sep{color:var(--c-sand)}
.breadcrumb .current{color:var(--c-ink-3)}
.cat-hero-grid{
  display:grid;
  grid-template-columns:1.35fr .9fr;
  gap:48px;
  align-items:center;
  position:relative;
  z-index:1;
}
.cat-hero h1{margin-bottom:16px}
.cat-hero .lead{
  font-size:17px;
  color:var(--c-ink-2);
  max-width:38ch;
  line-height:1.85;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-nums{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:18px;
  margin-top:28px;
  font-size:12.5px;
  color:var(--c-ink-3);
  letter-spacing:.04em;
}
.hero-nums .n{font-family:var(--mono);font-size:20px;color:var(--c-primary);margin-right:6px;letter-spacing:0}
.hero-nums .divider{width:1px;height:18px;background:var(--c-line)}
.hero-media{position:relative}
.hero-media img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  border-radius:var(--r-md);
  box-shadow:var(--sh-3);
}
.hero-media .tag-float{
  position:absolute;
  left:-14px;
  bottom:-16px;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:12px 16px;
  box-shadow:var(--sh-2);
  font-size:12.5px;
  color:var(--c-ink-3);
}
.hero-media .tag-float strong{
  display:block;
  font-family:var(--mono);
  font-size:24px;
  color:var(--c-primary);
  line-height:1.2;
}

/* ---------- 场景卡片 ---------- */
.scene-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
  margin-top:8px;
}
.scene-card{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:26px 24px;
  box-shadow:var(--sh-1);
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.scene-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(14,90,85,.28)}
.scene-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px}
.scene-num{
  font-family:var(--mono);
  font-size:12.5px;
  color:var(--c-accent);
  background:rgba(216,98,46,.12);
  border-radius:6px;
  padding:3px 8px;
  letter-spacing:.06em;
}
.scene-top svg{width:24px;height:24px;color:var(--c-primary)}
.scene-card h3{font-size:18px;margin-bottom:10px}
.scene-card p{font-size:14.5px;color:var(--c-ink-2);line-height:1.8}
.scene-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.chip{
  font-size:12.5px;
  color:var(--c-primary);
  background:var(--c-primary-100);
  border-radius:var(--r-pill);
  padding:4px 12px;
}
.chip.sand{color:#8A6428;background:rgba(228,200,154,.4)}
.scene-figure{margin-top:32px;border-radius:var(--r-md);overflow:hidden;box-shadow:var(--sh-1)}
.scene-figure img{width:100%;aspect-ratio:21/9;object-fit:cover}

/* ---------- 时间线 ---------- */
.timeline{
  position:relative;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
  margin-top:44px;
}
.timeline::before{
  content:"";
  position:absolute;
  left:6%;
  right:6%;
  top:19px;
  height:1px;
  background:var(--c-line);
}
.tl-item{position:relative;padding-top:56px}
.tl-num{
  position:absolute;
  top:0;left:0;
  width:38px;height:38px;
  border-radius:50%;
  background:var(--c-surface);
  border:1px solid var(--c-primary);
  color:var(--c-primary);
  font-family:var(--mono);
  font-size:13.5px;
  display:grid;place-items:center;
  z-index:1;
}
.tl-item h3{font-size:17px;margin-bottom:8px}
.tl-item p{font-size:14.5px;color:var(--c-ink-2);line-height:1.8}
.tl-meta{
  display:inline-block;
  margin-top:12px;
  font-family:var(--mono);
  font-size:12.5px;
  color:var(--c-ink-3);
  border-top:1px dashed var(--c-line);
  padding-top:8px;
}

/* ---------- 横向滚动卡 ---------- */
.rail-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap}
.rail{
  display:flex;
  gap:20px;
  overflow-x:auto;
  padding:8px 2px 24px;
  scroll-snap-type:x mandatory;
  -webkit-overflow-scrolling:touch;
}
.rail::-webkit-scrollbar{height:8px}
.rail::-webkit-scrollbar-track{background:var(--c-surface-2);border-radius:999px}
.rail::-webkit-scrollbar-thumb{background:rgba(14,90,85,.35);border-radius:999px}
.rail-card{
  flex:0 0 306px;
  scroll-snap-align:start;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:22px;
  box-shadow:var(--sh-1);
  transition:transform .18s var(--ease),box-shadow .18s var(--ease);
}
.rail-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.rail-card h3{font-size:17px;margin:14px 0 10px}
.rail-card p{font-size:14px;color:var(--c-ink-3);line-height:1.8}
.rail-card .rail-foot{
  margin-top:18px;
  padding-top:14px;
  border-top:1px solid var(--c-line);
  font-size:12.5px;
  color:var(--c-ink-3);
  display:flex;
  justify-content:space-between;
  gap:10px;
}

/* ---------- 排行表 ---------- */
.table-wrap{margin-top:32px;overflow-x:auto;border:1px solid var(--c-line);border-radius:var(--r-card);background:var(--c-surface);box-shadow:var(--sh-1)}
table.rank{width:100%;border-collapse:collapse;min-width:720px}
table.rank thead th{
  background:var(--c-primary-100);
  color:var(--c-primary-800);
  font-size:13px;
  letter-spacing:.05em;
  font-weight:600;
  text-align:left;
  padding:14px 18px;
  border-bottom:1px solid var(--c-line);
  white-space:nowrap;
}
table.rank tbody td{
  padding:15px 18px;
  border-bottom:1px solid var(--c-line);
  font-size:14.5px;
  color:var(--c-ink-2);
  vertical-align:middle;
}
table.rank tbody tr:nth-child(even){background:#FBFAF7}
table.rank tbody tr:last-child td{border-bottom:none}
table.rank tbody td:first-child{color:var(--c-ink);font-weight:600}
.bar{height:6px;border-radius:999px;background:var(--c-surface-2);overflow:hidden;min-width:110px}
.bar span{display:block;height:100%;background:var(--c-accent);border-radius:999px}
.pct{font-family:var(--mono);color:var(--c-primary);font-size:14px}

/* ---------- FAQ ---------- */
.faq{max-width:840px;margin:0 auto;border-top:1px solid var(--c-line)}
.faq details{border-bottom:1px solid var(--c-line)}
.faq summary{
  display:flex;
  align-items:flex-start;
  gap:16px;
  padding:22px 8px;
  cursor:pointer;
  list-style:none;
  font-size:17px;
  font-weight:600;
  color:var(--c-ink);
  transition:color .18s var(--ease);
}
.faq summary::-webkit-details-marker{display:none}
.faq summary:hover{color:var(--c-primary)}
.faq details[open] summary{color:var(--c-primary)}
.faq .idx{font-family:var(--mono);font-size:15px;color:var(--c-accent);flex:none;padding-top:2px}
.faq .qtext{flex:1}
.faq .arrow{
  flex:none;
  width:18px;height:18px;
  margin-top:5px;
  color:var(--c-ink-3);
  transition:transform .2s var(--ease),color .18s var(--ease);
}
.faq details[open] .arrow{transform:rotate(180deg);color:var(--c-primary)}
.faq .answer{
  padding:0 8px 24px 42px;
  font-size:15px;
  line-height:1.9;
  color:var(--c-ink-2);
  animation:fadeIn .22s var(--ease);
}
@keyframes fadeIn{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}

/* ---------- CTA / 表单 ---------- */
.cta-band{
  background:var(--c-primary-800);
  color:#F2EFE8;
  border-radius:var(--r-lg);
  padding:44px;
  display:grid;
  grid-template-columns:1fr 1.05fr;
  gap:44px;
  align-items:center;
  box-shadow:var(--sh-3);
}
.cta-band h2{color:#fff;font-size:clamp(22px,2.4vw,30px)}
.cta-band .cta-text{font-size:15.5px;color:#CFE0DC;margin-top:14px;line-height:1.85}
.cta-band .cta-points{margin-top:22px;display:grid;gap:10px}
.cta-band .cta-points li{
  display:flex;
  gap:10px;
  align-items:flex-start;
  font-size:14.5px;
  color:#D8E3E0;
}
.cta-band .cta-points svg{width:16px;height:16px;flex:none;margin-top:5px;color:var(--c-sand)}
.cta-form{
  background:rgba(255,255,255,.06);
  border:1px solid rgba(228,200,154,.28);
  border-radius:var(--r-card);
  padding:26px;
  display:grid;
  gap:16px;
}
.field{display:grid;gap:7px}
.field label{font-size:13.5px;color:#CFE0DC;letter-spacing:.02em}
.field input,.field select{
  height:44px;
  width:100%;
  padding:0 14px;
  border-radius:10px;
  border:1px solid rgba(255,255,255,.28);
  background:rgba(255,255,255,.96);
  color:var(--c-ink);
  font-size:14.5px;
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.field input::placeholder{color:var(--c-ink-3)}
.field input:focus,.field select:focus{
  outline:none;
  border-color:var(--c-primary);
  box-shadow:0 0 0 3px rgba(14,90,85,.22);
}
.field.has-error input{border-color:var(--err)}
.err-text{font-size:12.5px;color:#F0B3A6;display:none}
.field.has-error .err-text{display:block}
.form-success{
  display:none;
  align-items:center;
  gap:10px;
  background:rgba(47,125,90,.22);
  border:1px solid rgba(47,125,90,.5);
  color:#D6F0E2;
  border-radius:10px;
  padding:12px 14px;
  font-size:14px;
}
.form-success.is-visible{display:flex}
.form-success svg{width:18px;height:18px;flex:none;color:#9FE0BE}
.form-note{font-size:12.5px;color:#A9BFBA;line-height:1.7}

/* ---------- 扫描进入动效 ---------- */
.reveal{opacity:0;transform:translateY(8px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-primary-800);color:#E9E5DC;margin-top:88px;padding:64px 0 0}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:48px;
}
.site-footer .brand-name{color:#fff}
.site-footer .brand-mark{background:rgba(255,255,255,.10)}
.site-footer .brand-mark svg{color:#E4C89A}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.85;color:#C6D3CF;max-width:34ch}
.footer-contact{margin-top:18px;display:grid;gap:6px}
.footer-contact li{font-size:13.5px;color:#C6D3CF;font-family:var(--mono)}
.footer-col h3{
  font-size:13px;
  letter-spacing:.08em;
  text-transform:uppercase;
  color:#E4C89A;
  font-weight:600;
  margin-bottom:16px;
}
.footer-col ul{display:grid;gap:10px}
.footer-col a{font-size:14px;color:#D5DEDA;transition:color .18s var(--ease)}
.footer-col a:hover{color:var(--c-accent)}
.footer-col li{font-size:14px;color:#C6D3CF}
.footer-bottom{
  display:flex;
  justify-content:space-between;
  gap:18px;
  flex-wrap:wrap;
  padding:20px 0 26px;
  border-top:1px solid rgba(255,255,255,.14);
}
.footer-bottom p{font-size:13px;color:#A9BFBA}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .container{max-width:1080px}
  .scene-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:1023px){
  .sec{padding:64px 0}
  .cat-hero-grid{grid-template-columns:1fr;gap:32px}
  .cat-hero .lead{max-width:none}
  .timeline{grid-template-columns:repeat(2,1fr);gap:28px}
  .timeline::before{display:none}
  .cta-band{grid-template-columns:1fr;padding:34px;gap:30px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
  .nav-links{gap:18px}
}
@media (max-width:900px){
  .nav-toggle{display:flex}
  .nav-links{
    position:fixed;
    top:68px;
    left:0;right:0;bottom:0;
    background:#fff;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:14px 20px 48px;
    overflow-y:auto;
    transform:translateY(-10px);
    opacity:0;
    visibility:hidden;
    transition:opacity .2s var(--ease),transform .2s var(--ease),visibility .2s;
    border-top:1px solid var(--c-line);
  }
  .nav-links.is-open{transform:none;opacity:1;visibility:visible}
  .nav-links a{
    padding:16px 6px;
    font-size:18px;
    font-weight:500;
    border-radius:0;
    border-bottom:1px solid var(--c-line);
    background:transparent;
  }
  .nav-links a:hover,.nav-links a.is-active{background:transparent;color:var(--c-primary)}
  .nav-links a.nav-cta{
    margin-top:22px;
    height:46px;
    justify-content:center;
    font-size:16px;
    border-bottom:none;
  }
}
@media (max-width:767px){
  .container{padding:0 18px}
  .sec{padding:48px 0}
  .sec-head{margin-bottom:22px}
  .cat-hero{padding:24px 0 52px}
  .cat-hero .seal{display:none}
  .scene-grid{grid-template-columns:1fr}
  .timeline{grid-template-columns:1fr;gap:22px}
  .hero-media .tag-float{left:12px;bottom:-14px}
  .hero-actions .btn{width:100%}
  .hero-nums{gap:12px}
  .rail-card{flex:0 0 84%}
  .cta-band{padding:26px 20px;border-radius:var(--r-md)}
  .cta-form{padding:20px}
  .footer-grid{grid-template-columns:1fr;gap:30px;padding-bottom:36px}
  .site-footer{margin-top:56px;padding-top:48px}
  .footer-bottom{flex-direction:column;gap:8px}
  .faq summary{font-size:16px;padding:18px 4px}
  .faq .answer{padding:0 4px 20px 38px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category4 */
:root{
  --c-primary:#0E5A55;
  --c-primary-800:#0A423E;
  --c-primary-100:#E3EFEC;
  --c-accent:#D8622E;
  --c-accent-800:#B34E20;
  --c-sand:#E4C89A;
  --c-bg:#F6F4EF;
  --c-surface:#FFFFFF;
  --c-surface-2:#ECE8E0;
  --c-line:#DCD8CF;
  --c-ink:#1B2321;
  --c-ink-2:#4A5551;
  --c-ink-3:#7C8781;
  --c-ok:#2F7D5A;
  --c-err:#C2503C;
  --r-sm:8px;--r-md:12px;--r-lg:18px;--r-pill:999px;
  --sh-1:0 1px 2px rgba(27,35,33,.06);
  --sh-2:0 12px 28px -14px rgba(14,90,85,.22);
  --sh-3:0 22px 48px -22px rgba(14,90,85,.30);
  --font-sans:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
  --font-mono:ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--c-bg);color:var(--c-ink);
  font-family:var(--font-sans);font-size:16px;line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--c-primary);text-decoration:none;transition:color .18s var(--ease),background-color .18s var(--ease),border-color .18s var(--ease)}
a:hover{color:var(--c-accent)}
button{font:inherit;cursor:pointer}
h1,h2,h3,h4{margin:0;line-height:1.35;font-weight:700;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums}
.eyebrow{
  font-size:12.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--c-primary);
  font-weight:600;display:inline-block;
}
.section{padding:88px 0}
.section-head{max-width:760px;margin-bottom:28px}
.section-head h2{font-size:clamp(24px,2.6vw,34px);margin:10px 0 12px}
.section-head p{color:var(--c-ink-2);font-size:15.5px}
.band{background:var(--c-surface-2)}

/* header */
.site-header{
  position:sticky;top:0;z-index:60;background:rgba(255,255,255,.92);
  border-bottom:1px solid transparent;transition:background-color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.site-header.is-scrolled{background:rgba(255,255,255,.98);border-bottom-color:var(--c-line);box-shadow:var(--sh-1)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:70px}
.brand{display:inline-flex;align-items:center;gap:10px;height:36px;color:var(--c-primary);font-weight:700}
.brand-mark{display:inline-flex;width:30px;height:30px;align-items:center;justify-content:center;background:var(--c-primary-100);border-radius:9px}
.brand-mark svg{width:20px;height:20px;stroke:var(--c-primary)}
.brand-name{font-size:18px;letter-spacing:.01em;color:var(--c-ink)}
.brand:hover .brand-name{color:var(--c-primary)}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-links a{font-size:14.5px;font-weight:500;color:var(--c-ink-2);padding:6px 12px;border-radius:var(--r-pill)}
.nav-links a:hover{color:var(--c-primary);background:var(--c-primary-100)}
.nav-links a.is-active{background:var(--c-primary-100);color:var(--c-primary);font-weight:600}
.nav-links .nav-cta{
  height:30px;display:inline-flex;align-items:center;padding:0 16px;border-radius:var(--r-pill);
  background:var(--c-accent);color:#fff;font-weight:600;font-size:14px;
}
.nav-links .nav-cta:hover{background:var(--c-accent-800);color:#fff}
.nav-toggle{display:none;width:42px;height:36px;border:1px solid var(--c-line);background:#fff;border-radius:10px;padding:8px 10px}
.nav-toggle span{display:block;height:2px;background:var(--c-primary);border-radius:2px;margin:4px 0}

/* hero */
.cat-hero{padding:56px 0 48px;background:var(--c-surface);border-bottom:1px solid var(--c-line);position:relative;overflow:hidden}
.cat-hero::after{
  content:"";position:absolute;right:-60px;top:-40px;width:220px;height:220px;border-radius:24px;
  background:var(--c-sand);opacity:.18;transform:rotate(12deg);
}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:44px;align-items:center;position:relative;z-index:2}
.breadcrumb{display:flex;flex-wrap:wrap;gap:8px;font-size:13.5px;color:var(--c-ink-3);margin-bottom:16px}
.breadcrumb a{color:var(--c-ink-3)}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb span[aria-hidden="true"]{color:var(--c-line)}
.cat-hero h1{font-size:clamp(28px,4vw,46px);margin:10px 0 16px}
.cat-hero .hero-note{font-size:16.5px;color:var(--c-ink-2);max-width:36em}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:var(--r-pill);
  background:var(--c-primary-100);color:var(--c-primary);font-size:12.5px;font-weight:600;letter-spacing:.02em;
}
.badge.accent{background:rgba(216,98,46,.12);color:var(--c-accent-800)}
.hero-figure{position:relative}
.hero-figure img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-lg);box-shadow:var(--sh-3)}
.hero-figure figcaption{font-size:13px;color:var(--c-ink-3);margin-top:10px}
.float-card{
  position:absolute;left:-18px;bottom:26px;background:#fff;border:1px solid var(--c-line);border-radius:14px;
  padding:14px 18px;box-shadow:var(--sh-2);min-width:170px;
}
.float-card .num{font-family:var(--font-mono);font-size:26px;color:var(--c-primary);line-height:1.2}
.float-card .lbl{font-size:12px;letter-spacing:.06em;color:var(--c-ink-3)}

/* layout */
.layout{display:grid;grid-template-columns:8fr 4fr;gap:40px;align-items:start}
.content-block{padding:64px 0 0}
.content-block:first-child{padding-top:72px}
.content-block h2{font-size:clamp(22px,2.2vw,29px);position:relative;padding-left:14px;margin-bottom:18px}
.content-block h2::before{
  content:"";position:absolute;left:0;top:.28em;width:4px;height:1.05em;border-radius:4px;background:var(--c-accent);
}
.content-block h3{font-size:19px;margin:26px 0 10px}
.content-block p{color:var(--c-ink-2);margin-bottom:14px}
.article-note{
  background:var(--c-surface);border:1px solid var(--c-line);border-left:4px solid var(--c-primary);
  border-radius:var(--r-md);padding:18px 22px;color:var(--c-ink-2);font-size:15.5px;margin:22px 0;
}
.checks{margin:18px 0 22px;display:grid;gap:10px}
.checks li{display:flex;gap:10px;font-size:15.5px;color:var(--c-ink-2)}
.checks li::before{
  content:"";flex:0 0 18px;height:18px;margin-top:6px;border-radius:50%;
  background:var(--c-primary-100) url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'><path d='M3.5 8.4l3 3 6-6.6' fill='none' stroke='%230E5A55' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'/></svg>") center/14px no-repeat;
}
.figure{border-radius:var(--r-md);overflow:hidden;box-shadow:var(--sh-1);margin:22px 0 8px}
.figure img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-md)}
.figcap{font-size:13px;color:var(--c-ink-3);margin-bottom:26px}
.table-wrap{border:1px solid var(--c-line);border-radius:14px;overflow:hidden;background:#fff;box-shadow:var(--sh-1);margin:22px 0 10px}
table{width:100%;border-collapse:collapse;font-size:14.5px}
thead th{background:var(--c-primary-100);color:var(--c-primary-800);font-weight:600;text-align:left;padding:13px 16px;font-size:14px}
tbody td{padding:13px 16px;border-top:1px solid var(--c-line);color:var(--c-ink-2);vertical-align:top}
tbody tr:nth-child(even){background:#FAF9F5}
td .mono{color:var(--c-ink);font-size:13.5px}

/* faq */
.faq-list{background:#fff;border:1px solid var(--c-line);border-radius:14px;overflow:hidden;box-shadow:var(--sh-1);margin-top:22px}
.faq-item + .faq-item{border-top:1px solid var(--c-line)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;gap:14px;align-items:flex-start;
  padding:18px 22px;font-size:16.5px;font-weight:600;color:var(--c-ink);transition:color .18s var(--ease),background-color .18s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary .idx{font-family:var(--font-mono);font-size:14px;color:var(--c-accent);padding-top:3px}
.faq-item summary:hover{color:var(--c-primary);background:#FBFBF8}
.faq-item[open] summary{color:var(--c-primary)}
.faq-item .answer{padding:0 22px 20px 50px;font-size:15px;color:var(--c-ink-2)}

/* sidebar */
.sidebar{position:sticky;top:96px;display:grid;gap:20px;padding-top:72px}
.side-card{background:#fff;border:1px solid var(--c-line);border-radius:14px;padding:22px;box-shadow:var(--sh-1)}
.side-card h3{font-size:15px;letter-spacing:.04em;color:var(--c-ink);margin-bottom:14px}
.side-nav{display:grid;gap:6px}
.side-nav a{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:10px 12px;border-radius:10px;font-size:14.5px;color:var(--c-ink-2);border:1px solid transparent}
.side-nav a:hover{background:var(--c-primary-100);color:var(--c-primary)}
.side-nav a.is-current{background:var(--c-primary-100);color:var(--c-primary);font-weight:600;border-color:rgba(14,90,85,.16)}
.side-nav a .arrow{font-family:var(--font-mono);font-size:13px;color:var(--c-ink-3)}
.side-card .kv{display:grid;gap:10px;font-size:14.5px;color:var(--c-ink-2)}
.side-card .kv li{display:flex;justify-content:space-between;gap:12px;border-bottom:1px dashed var(--c-line);padding-bottom:9px}
.side-card .kv li:last-child{border-bottom:0;padding-bottom:0}
.side-card .kv .mono{color:var(--c-ink)}

/* buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 24px;
  border-radius:10px;font-size:15px;font-weight:600;border:1px solid transparent;transition:all .19s var(--ease);
}
.btn-primary{background:var(--c-accent);color:#fff;box-shadow:var(--sh-1)}
.btn-primary:hover{background:var(--c-accent-800);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{border-color:var(--c-primary);color:var(--c-primary);background:transparent}
.btn-ghost:hover{background:var(--c-primary-100);color:var(--c-primary)}
.btn-block{width:100%}

/* cta strip */
.cta-strip{
  background:var(--c-primary-800);color:#F6F4EF;border-radius:var(--r-lg);padding:38px 40px;
  display:flex;flex-wrap:wrap;gap:20px;align-items:center;justify-content:space-between;margin:72px 0 88px;
  position:relative;overflow:hidden;
}
.cta-strip::before{
  content:"";position:absolute;left:-40px;bottom:-60px;width:220px;height:220px;border-radius:50%;
  background:rgba(228,200,154,.14);
}
.cta-strip h2{font-size:clamp(20px,2vw,26px);color:#fff;margin-bottom:8px;position:relative;z-index:2}
.cta-strip p{color:rgba(246,244,239,.78);font-size:15px;position:relative;z-index:2}
.cta-strip .btn{position:relative;z-index:2}

/* footer */
.site-footer{background:var(--c-primary-800);color:#F1EFE9;padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px;padding-bottom:40px}
.footer-brand .brand-name{color:#fff}
.footer-brand .brand-mark{background:rgba(255,255,255,.12)}
.footer-brand .brand-mark svg path{stroke:#E4C89A}
.footer-brand p{color:rgba(241,239,233,.74);font-size:14.5px;margin:14px 0 16px;max-width:32em}
.footer-contact li{font-size:14px;color:rgba(241,239,233,.8);margin-bottom:6px}
.footer-col h3{font-size:13px;letter-spacing:.09em;text-transform:uppercase;color:var(--c-sand);margin-bottom:16px}
.footer-col li{margin-bottom:10px}
.footer-col a,.footer-col li{font-size:14.5px;color:rgba(241,239,233,.82)}
.footer-col a:hover{color:var(--c-sand)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14);padding-top:20px;padding-bottom:26px;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
}
.footer-bottom p{font-size:13.5px;color:rgba(241,239,233,.66)}

/* reveal */
.reveal{opacity:0;transform:translateY(8px);transition:opacity .45s var(--ease),transform .45s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

@media (max-width:1199px){
  .container{max-width:1080px}
  .hero-grid{gap:32px}
}
@media (max-width:1023px){
  .nav-links{gap:16px}
  .nav-links a{padding:6px 9px;font-size:14px}
  .hero-grid{grid-template-columns:1fr}
  .hero-figure img{aspect-ratio:16/9}
  .float-card{left:12px;bottom:12px}
  .layout{grid-template-columns:1fr;gap:8px}
  .sidebar{position:static;padding-top:32px}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .section{padding:48px 0}
  .cat-hero{padding:36px 0 32px}
  .content-block{padding-top:44px}
  .content-block:first-child{padding-top:48px}
  .nav-toggle{display:block}
  .nav-links{
    display:none;position:fixed;inset:70px 0 0 0;background:#fff;flex-direction:column;align-items:stretch;
    gap:4px;padding:24px 18px;overflow-y:auto;z-index:70;
  }
  .nav-links.is-open{display:flex}
  .nav-links a{font-size:18px;padding:14px 12px;border-radius:12px}
  .nav-links .nav-cta{justify-content:center;height:48px;font-size:16px;margin-top:12px}
  .footer-grid{grid-template-columns:1fr}
  .cta-strip{padding:28px 22px;margin:48px 0 56px}
  table{font-size:13.5px}
  thead th,tbody td{padding:11px 12px}
  .faq-item summary{padding:16px 16px;font-size:15.5px}
  .faq-item .answer{padding:0 16px 18px 44px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important}
  .reveal{opacity:1;transform:none}
}