/* roulang page: index */
:root{
  --brand-ink:#10312C;
  --brand-ink-700:#1C4A43;
  --brand-mist:#CBDDD6;
  --brand-mist-50:#EEF4F1;
  --accent-dawn:#E0703A;
  --accent-dawn-600:#C25A28;
  --paper:#FBFAF7;
  --surface:#FFFFFF;
  --line:#E4E7E3;
  --text:#1A2421;
  --text-muted:#5B6A66;
  --text-invert:#F4F1EA;
  --r-card:16px;
  --r-btn:10px;
  --r-pill:999px;
  --r-img:12px;
  --sh-1:0 1px 2px rgba(16,49,44,.05);
  --sh-2:0 10px 28px -14px rgba(16,49,44,.22);
  --sh-3:0 18px 48px -20px rgba(16,49,44,.30);
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:17px;
  line-height:1.95;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
img{max-width:100%;display:block;height:auto;}
a{color:var(--brand-ink-700);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--accent-dawn-600);}
button{font-family:inherit;cursor:pointer;}
input,textarea,select{font-family:inherit;font-size:16px;}
:focus-visible{outline:2px solid var(--accent-dawn);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
.section{padding:104px 0;}
.section--mist{background:var(--brand-mist-50);}
.section--tight{padding:76px 0;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.14em;color:var(--accent-dawn-600);
  text-transform:uppercase;font-weight:600;margin-bottom:16px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--accent-dawn);display:block;}
h1{font-size:46px;line-height:1.25;font-weight:700;letter-spacing:-.01em;}
h2{font-size:34px;line-height:1.3;font-weight:700;letter-spacing:-.01em;}
h3{font-size:22px;line-height:1.45;font-weight:600;}
.lead{font-size:17px;color:var(--text-muted);line-height:1.95;}
.muted{color:var(--text-muted);}
.section-head{max-width:720px;margin-bottom:48px;}
.section-head h2{margin-bottom:14px;}
.section-head--row{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;
  max-width:none;flex-wrap:wrap;
}
.section-head--row .section-head-text{max-width:680px;}
.text-link{
  display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;
  color:var(--brand-ink-700);border-bottom:1px solid var(--brand-mist);
  padding-bottom:2px;transition:border-color .2s ease,color .2s ease;
}
.text-link:hover{border-color:var(--accent-dawn);color:var(--accent-dawn-600);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 26px;border-radius:var(--r-btn);
  font-size:16px;font-weight:600;border:1px solid transparent;
  transition:background-color .22s ease,color .22s ease,border-color .22s ease,transform .18s ease,box-shadow .22s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--brand-ink);color:var(--text-invert);box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--brand-ink-700);color:var(--text-invert);transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(1px);box-shadow:var(--sh-1);}
.btn-ghost{background:transparent;color:var(--brand-ink);border-color:var(--brand-ink);}
.btn-ghost:hover{background:rgba(203,221,214,.32);color:var(--brand-ink);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-accent{background:var(--accent-dawn);color:#fff;box-shadow:var(--sh-1);}
.btn-accent:hover{background:var(--accent-dawn-600);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-accent:active{transform:translateY(1px);}
.btn-sm{min-height:40px;padding:0 20px;font-size:15px;}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.4;pointer-events:none;}
.btn-row{display:flex;flex-wrap:wrap;gap:14px;}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--r-pill);
  background:var(--brand-mist-50);color:var(--brand-ink);
  font-size:13px;font-weight:600;line-height:1.5;border:1px solid var(--brand-mist);
}
.tag{
  display:inline-block;padding:6px 14px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:var(--surface);
  font-size:13px;color:var(--text-muted);transition:all .2s ease;
}
.tag:hover{border-color:var(--brand-mist);color:var(--brand-ink);background:var(--brand-mist-50);}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(251,250,247,.62);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(16,49,44,.08);
  box-shadow:var(--sh-1);
  transition:background-color .24s ease,box-shadow .24s ease;
}
.site-header.is-stuck{background:rgba(255,255,255,.94);box-shadow:var(--sh-2);}
.nav-wrap{
  display:flex;align-items:center;gap:28px;
  height:76px;transition:height .24s ease;
}
.site-header.is-stuck .nav-wrap{height:64px;}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--brand-ink);flex:0 0 auto;}
.logo:hover{color:var(--brand-ink);}
.logo-mark{
  width:34px;height:34px;border-radius:10px;flex:0 0 auto;
  background:var(--brand-ink);display:grid;place-items:center;
  box-shadow:var(--sh-1);
}
.logo-mark svg{width:20px;height:20px;display:block;}
.logo-text{font-size:17px;font-weight:700;letter-spacing:-.01em;white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:8px;flex:1 1 auto;}
.nav-link{
  position:relative;padding:10px 14px;border-radius:8px;
  font-size:15px;color:var(--text);font-weight:500;
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:6px;height:2px;
  background:var(--accent-dawn);transform:scaleX(0);transform-origin:left;
  transition:transform .24s ease;
}
.nav-link:hover{color:var(--brand-ink);background:rgba(203,221,214,.28);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--brand-ink);font-weight:600;}
.nav-link.is-active::after{transform:scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.nav-search{display:flex;align-items:center;gap:0;}
.search-toggle{
  width:40px;height:40px;border-radius:var(--r-pill);border:1px solid transparent;
  background:transparent;display:grid;place-items:center;color:var(--brand-ink);
  transition:background-color .2s ease,border-color .2s ease;
}
.search-toggle:hover{background:rgba(203,221,214,.35);border-color:var(--brand-mist);}
.search-toggle svg{width:18px;height:18px;}
.search-field{
  width:0;opacity:0;overflow:hidden;
  transition:width .28s ease,opacity .28s ease,margin .28s ease;
}
.nav-search.is-open .search-field{width:190px;opacity:1;margin-right:8px;}
.search-field input{
  width:100%;height:40px;padding:0 14px;border-radius:var(--r-btn);
  border:1px solid var(--line);background:var(--surface);color:var(--text);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.search-field input:focus{outline:none;border-color:var(--accent-dawn);box-shadow:0 0 0 3px rgba(224,112,58,.12);}
.menu-toggle{
  display:none;width:44px;height:44px;border-radius:var(--r-btn);
  border:1px solid var(--line);background:var(--surface);
  place-items:center;color:var(--brand-ink);
}
.menu-toggle svg{width:20px;height:20px;}
.drawer-mask{
  position:fixed;inset:0;background:rgba(16,49,44,.45);
  opacity:0;visibility:hidden;transition:opacity .26s ease,visibility .26s ease;z-index:70;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:82vw;max-width:340px;
  background:var(--paper);z-index:80;transform:translateX(102%);
  transition:transform .3s cubic-bezier(.4,0,.2,1);
  display:flex;flex-direction:column;box-shadow:var(--sh-3);
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{
  display:flex;align-items:center;justify-content:space-between;
  padding:0 20px;height:72px;border-bottom:1px solid var(--line);
}
.drawer-close{
  width:44px;height:44px;border-radius:var(--r-btn);border:1px solid var(--line);
  background:var(--surface);display:grid;place-items:center;color:var(--brand-ink);
}
.drawer-close svg{width:18px;height:18px;}
.drawer-body{padding:16px 0;flex:1 1 auto;overflow-y:auto;}
.drawer-link{
  display:flex;align-items:center;height:52px;padding:0 22px;
  font-size:16px;color:var(--text);border-bottom:1px solid var(--line);
}
.drawer-link:hover,.drawer-link.is-active{background:var(--brand-mist-50);color:var(--brand-ink);font-weight:600;}
.drawer-foot{padding:20px;border-top:1px solid var(--line);}

/* ---------- 首屏 ---------- */
.hero{position:relative;padding:72px 0 96px;overflow:hidden;background:var(--paper);}
.hero::before{
  content:"";position:absolute;top:-160px;right:-120px;width:620px;height:620px;
  background:radial-gradient(circle at 60% 40%,rgba(203,221,214,.5),rgba(203,221,214,0) 68%);
  pointer-events:none;
}
.hero::after{
  content:"";position:absolute;bottom:-140px;left:-160px;width:460px;height:460px;
  background:linear-gradient(120deg,rgba(224,112,58,.10),rgba(224,112,58,0) 70%);
  border-radius:50%;pointer-events:none;
}
.hero-grid{
  position:relative;z-index:1;
  display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;
}
.hero h1{margin-bottom:20px;}
.hero-sub{font-size:18px;line-height:1.9;color:var(--text-muted);max-width:560px;margin-bottom:32px;}
.hero .btn-row{margin-bottom:34px;}
.trust-row{
  display:flex;flex-wrap:wrap;gap:0;border-top:1px solid var(--line);padding-top:18px;
}
.trust-item{
  display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text-muted);
  padding-right:22px;margin-right:22px;border-right:1px solid var(--line);
}
.trust-item:last-child{border-right:none;margin-right:0;padding-right:0;}
.trust-item svg{width:16px;height:16px;color:var(--accent-dawn);flex:0 0 auto;}
.hero-visual{position:relative;}
.hero-figure{
  border-radius:20px;overflow:hidden;border:1px solid var(--brand-mist);
  background:var(--surface);box-shadow:var(--sh-2);
}
.hero-figure img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-img);}
.hero-float{
  position:absolute;right:-14px;bottom:-34px;width:262px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:18px 20px;box-shadow:var(--sh-3);
}
.hero-float-title{font-size:14px;font-weight:700;color:var(--brand-ink);margin-bottom:12px;}
.hero-steps li{
  display:flex;align-items:center;gap:10px;font-size:14px;color:var(--text-muted);
  padding:6px 0;
}
.hero-steps .step-num{
  width:22px;height:22px;border-radius:var(--r-pill);flex:0 0 auto;
  background:var(--brand-mist-50);border:1px solid var(--brand-mist);
  color:var(--brand-ink);font-size:12px;font-weight:700;
  display:grid;place-items:center;
}

/* ---------- 痛点 ---------- */
.pain-grid{display:grid;grid-template-columns:300px 1fr;gap:56px;align-items:start;}
.pain-intro h2{font-size:30px;margin-bottom:14px;}
.pain-list{border-top:1px solid var(--line);}
.pain-item{
  display:grid;grid-template-columns:64px 1fr;gap:20px;
  padding:26px 0;border-bottom:1px solid var(--line);
}
.pain-num{font-size:15px;font-weight:700;color:var(--accent-dawn);letter-spacing:.06em;}
.pain-item h3{font-size:19px;margin-bottom:6px;}
.pain-item p{font-size:15.5px;color:var(--text-muted);line-height:1.85;}

/* ---------- 解决方案 ---------- */
.solution-wrap{position:relative;padding-left:46px;}
.solution-wrap::before{
  content:"";position:absolute;left:15px;top:12px;bottom:12px;width:1px;background:var(--line);
}
.solution-item{
  position:relative;
  display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center;
  padding:34px 0;
}
.solution-item + .solution-item{border-top:1px solid var(--line);}
.solution-item::before{
  content:"";position:absolute;left:-39px;top:52px;width:11px;height:11px;
  border-radius:50%;background:var(--accent-dawn);border:3px solid var(--paper);
  box-shadow:0 0 0 1px var(--brand-mist);
}
.solution-item--reverse .solution-text{order:2;}
.solution-item--reverse .solution-media{order:1;}
.solution-index{
  font-size:14px;font-weight:700;color:var(--accent-dawn);letter-spacing:.14em;margin-bottom:12px;
}
.solution-text h3{font-size:24px;margin-bottom:14px;}
.solution-text p{color:var(--text-muted);margin-bottom:18px;}
.check-list li{
  position:relative;padding-left:26px;margin-bottom:10px;
  font-size:15.5px;color:var(--text);line-height:1.8;
}
.check-list li::before{
  content:"";position:absolute;left:0;top:11px;width:12px;height:12px;
  border-radius:3px;background:var(--brand-mist-50);border:1px solid var(--brand-mist);
}
.check-list li::after{
  content:"";position:absolute;left:4px;top:14px;width:4px;height:6px;
  border-right:2px solid var(--brand-ink-700);border-bottom:2px solid var(--brand-ink-700);
  transform:rotate(40deg);
}
.solution-media img{
  width:100%;aspect-ratio:5/4;object-fit:cover;border-radius:var(--r-card);
  border:1px solid var(--line);box-shadow:var(--sh-1);
}

/* ---------- 数据条 ---------- */
.stats{background:var(--brand-ink);color:var(--text-invert);padding:72px 0;}
.stats-head{max-width:640px;margin-bottom:44px;}
.stats-head h2{color:var(--text-invert);font-size:30px;margin-bottom:12px;}
.stats-head p{color:rgba(244,241,234,.72);font-size:16px;}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:28px;}
.stat-item{border-left:1px solid rgba(244,241,234,.18);padding-left:22px;}
.stat-item:first-child{border-left:none;padding-left:0;}
.stat-num{font-size:40px;font-weight:700;color:#F7F4EC;line-height:1.1;margin-bottom:10px;letter-spacing:-.02em;}
.stat-num span{font-size:18px;margin-left:4px;font-weight:600;}
.stat-item p{font-size:14.5px;color:rgba(244,241,234,.72);line-height:1.7;}

/* ---------- 证言 ---------- */
.voice-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;}
.voice-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:30px 28px;box-shadow:var(--sh-1);position:relative;
  transition:transform .26s ease,box-shadow .26s ease,border-color .26s ease;
}
.voice-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--brand-mist);}
.voice-quote{font-size:36px;line-height:1;color:var(--accent-dawn);font-weight:700;margin-bottom:10px;}
.voice-card p{font-size:15.5px;line-height:1.9;color:var(--text);margin-bottom:24px;}
.voice-person{display:flex;align-items:center;gap:12px;border-top:1px solid var(--line);padding-top:18px;}
.avatar{
  width:48px;height:48px;border-radius:50%;flex:0 0 auto;
  background:var(--brand-mist-50);border:1px solid var(--brand-mist);
  color:var(--brand-ink);font-weight:700;font-size:16px;
  display:grid;place-items:center;
}
.voice-person strong{display:block;font-size:15px;color:var(--text);}
.voice-person span{font-size:13px;color:var(--text-muted);}

/* ---------- 最新信息 ---------- */
.news-grid{display:grid;grid-template-columns:1.15fr 1fr;gap:32px;}
.news-lead{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:transform .26s ease,box-shadow .26s ease,border-color .26s ease;
}
.news-lead:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--brand-mist);}
.news-lead-media{overflow:hidden;}
.news-lead-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .32s ease;}
.news-lead:hover .news-lead-media img{transform:scale(1.03);}
.news-lead-body{padding:26px 28px 28px;}
.news-lead-body h3{font-size:22px;margin:14px 0 12px;}
.news-lead-body h3 a{color:var(--text);}
.news-lead-body h3 a:hover{color:var(--brand-ink-700);}
.news-excerpt{font-size:15.5px;color:var(--text-muted);line-height:1.85;margin-bottom:20px;}
.news-meta{
  display:flex;align-items:center;gap:14px;font-size:13.5px;color:var(--text-muted);
  border-top:1px solid var(--line);padding-top:16px;
}
.news-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--brand-mist);}
.news-side{display:flex;flex-direction:column;gap:20px;}
.news-mini{
  display:grid;grid-template-columns:112px 1fr;gap:16px;align-items:center;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:14px;box-shadow:var(--sh-1);
  transition:transform .26s ease,box-shadow .26s ease,border-color .26s ease;
}
.news-mini:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--brand-mist);}
.news-mini-media{border-radius:var(--r-img);overflow:hidden;}
.news-mini-media img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .32s ease;}
.news-mini:hover .news-mini-media img{transform:scale(1.04);}
.news-mini h3{font-size:16px;line-height:1.6;margin:8px 0 8px;}
.news-mini h3 a{color:var(--text);}
.news-mini h3 a:hover{color:var(--brand-ink-700);}
.news-mini time{font-size:13px;color:var(--text-muted);}
.empty-state{
  border:1px dashed var(--brand-mist);border-radius:var(--r-card);
  background:var(--surface);padding:56px 28px;text-align:center;
}
.empty-state svg{width:38px;height:38px;color:var(--brand-mist);margin:0 auto 16px;}
.empty-state p{color:var(--text-muted);margin-bottom:20px;}

/* ---------- FAQ ---------- */
.faq-list{max-width:900px;margin:0 auto;}
.faq-item{
  border:1px solid var(--line);border-radius:var(--r-img);background:var(--surface);
  margin-bottom:14px;overflow:hidden;transition:border-color .22s ease,background-color .22s ease,box-shadow .22s ease;
}
.faq-item.is-open{border-color:var(--brand-mist);background:#FCFAF6;box-shadow:inset 3px 0 0 var(--accent-dawn),var(--sh-1);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 24px;background:transparent;border:0;text-align:left;
  font-size:17px;font-weight:600;color:var(--text);line-height:1.6;
}
.faq-q:hover{color:var(--brand-ink-700);}
.faq-icon{
  width:26px;height:26px;flex:0 0 auto;border-radius:var(--r-pill);
  border:1px solid var(--brand-mist);display:grid;place-items:center;
  color:var(--brand-ink);font-size:16px;line-height:1;
  transition:transform .24s ease,background-color .24s ease;
}
.faq-item.is-open .faq-icon{transform:rotate(45deg);background:var(--brand-mist-50);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s ease;}
.faq-a-inner{padding:0 24px 22px;color:var(--text-muted);font-size:15.5px;line-height:1.9;}
.faq-a-inner strong{color:var(--text);}

/* ---------- CTA 收口 ---------- */
.cta-band{background:var(--accent-dawn);color:#fff;padding:0;}
.cta-band .container{padding-top:0;padding-bottom:0;}
.cta-card{
  background:var(--brand-ink);border-radius:24px;padding:56px 56px;
  display:grid;grid-template-columns:1.05fr .95fr;gap:52px;align-items:center;
  box-shadow:var(--sh-3);margin:-1px 0 0;
}
.cta-card h2{color:var(--text-invert);font-size:32px;margin-bottom:14px;}
.cta-card p{color:rgba(244,241,234,.76);font-size:16px;margin-bottom:0;}
.cta-form{display:grid;gap:14px;}
.field label{display:block;font-size:13.5px;color:rgba(244,241,234,.78);margin-bottom:7px;font-weight:600;}
.field input{
  width:100%;height:48px;padding:0 16px;border-radius:var(--r-btn);
  border:1px solid rgba(244,241,234,.22);background:rgba(255,255,255,.06);
  color:var(--text-invert);transition:border-color .2s ease,box-shadow .2s ease,background-color .2s ease;
}
.field input::placeholder{color:rgba(244,241,234,.45);}
.field input:focus{
  outline:none;border-color:var(--accent-dawn);background:rgba(255,255,255,.1);
  box-shadow:0 0 0 3px rgba(224,112,58,.18);
}
.form-note{font-size:13px;color:rgba(244,241,234,.6);line-height:1.7;}
.form-success{
  display:none;background:rgba(203,221,214,.16);border:1px solid rgba(203,221,214,.4);
  border-radius:var(--r-btn);padding:12px 16px;font-size:14px;color:#E9F2EE;
}
.form-success.is-visible{display:block;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-ink);color:var(--text-invert);padding:76px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:0;}
.footer-col{padding:0 28px;border-left:1px solid rgba(255,255,255,.12);}
.footer-col:first-child{border-left:none;padding-left:0;}
.footer-col:last-child{padding-right:0;}
.footer-brand{display:inline-flex;align-items:center;gap:10px;margin-bottom:18px;color:var(--text-invert);}
.footer-brand:hover{color:var(--text-invert);}
.footer-brand .logo-mark{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.18);}
.footer-brand .logo-text{font-size:17px;font-weight:700;}
.footer-about{font-size:14.5px;line-height:1.85;color:rgba(244,241,234,.68);max-width:330px;}
.footer-title{font-size:15px;font-weight:700;color:var(--text-invert);margin-bottom:18px;}
.footer-links li{margin-bottom:12px;}
.footer-links a{font-size:14.5px;color:rgba(244,241,234,.72);}
.footer-links a:hover{color:#fff;}
.footer-contact li{font-size:14.5px;color:rgba(244,241,234,.72);margin-bottom:12px;line-height:1.8;}
.footer-contact strong{color:var(--text-invert);font-weight:600;}
.footer-bottom{
  margin-top:64px;border-top:1px solid rgba(255,255,255,.12);
  padding:24px 0 28px;display:flex;align-items:center;justify-content:space-between;
  gap:18px;flex-wrap:wrap;font-size:13.5px;color:rgba(244,241,234,.6);
}
.footer-bottom a{color:rgba(244,241,234,.72);}
.footer-bottom a:hover{color:#fff;}

/* ---------- 回到顶部 ---------- */
.to-top{
  position:fixed;right:26px;bottom:26px;width:46px;height:46px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:var(--surface);color:var(--brand-ink);
  display:grid;place-items:center;box-shadow:var(--sh-2);
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .24s ease,visibility .24s ease,transform .24s ease,background-color .2s ease;
  z-index:55;
}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{background:var(--brand-mist-50);}
.to-top svg{width:18px;height:18px;}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .container{padding:0 24px;}
  .nav-links{display:none;}
  .nav-search{display:none;}
  .menu-toggle{display:grid;}
  .nav-actions .btn{display:none;}
  .section{padding:78px 0;}
  h1{font-size:36px;}
  h2{font-size:28px;}
  .hero{padding:48px 0 76px;}
  .hero-grid{grid-template-columns:1fr;gap:52px;}
  .hero-float{position:static;width:100%;margin-top:20px;}
  .pain-grid{grid-template-columns:1fr;gap:32px;}
  .solution-wrap{padding-left:0;}
  .solution-wrap::before{display:none;}
  .solution-item{grid-template-columns:1fr;gap:26px;padding:30px 0;}
  .solution-item::before{display:none;}
  .solution-item--reverse .solution-text{order:1;}
  .solution-item--reverse .solution-media{order:2;}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:32px 28px;}
  .stat-item:nth-child(3){border-left:none;padding-left:0;}
  .voice-grid{grid-template-columns:1fr;gap:20px;}
  .news-grid{grid-template-columns:1fr;gap:24px;}
  .cta-card{grid-template-columns:1fr;gap:36px;padding:40px 32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px 0;}
  .footer-col{padding:0 24px;}
  .footer-col:nth-child(odd){border-left:none;padding-left:0;}
}
@media (max-width:767px){
  body{font-size:16px;line-height:1.9;}
  .container{padding:0 18px;}
  .section{padding:60px 0;}
  h1{font-size:28px;line-height:1.3;}
  h2{font-size:24px;}
  h3{font-size:19px;}
  .lead{font-size:16px;}
  .hero-sub{font-size:16.5px;}
  .hero .btn-row .btn{width:100%;}
  .trust-row{flex-direction:column;gap:12px;}
  .trust-item{border-right:none;margin-right:0;padding-right:0;}
  .stats{padding:56px 0;}
  .stats-grid{grid-template-columns:1fr;gap:26px;}
  .stat-item{border-left:none;padding-left:0;border-top:1px solid rgba(244,241,234,.16);padding-top:20px;}
  .stat-item:first-child{border-top:none;padding-top:0;}
  .stat-num{font-size:32px;}
  .news-mini{grid-template-columns:92px 1fr;}
  .faq-q{font-size:16px;padding:18px 18px;}
  .faq-a-inner{padding:0 18px 20px;}
  .cta-card{padding:32px 22px;border-radius:18px;}
  .cta-card h2{font-size:24px;}
  .footer-grid{grid-template-columns:1fr;gap:36px;}
  .footer-col{border-left:none;padding:0;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .to-top{right:16px;bottom:16px;}
}
@media (max-width:520px){
  .section-head--row{flex-direction:column;align-items:flex-start;}
  .hero-float{padding:16px;}
}

/* roulang page: article */
:root{
  --brand-ink:#10312C;
  --brand-ink-700:#1C4A43;
  --brand-mist:#CBDDD6;
  --brand-mist-50:#EEF4F1;
  --accent-dawn:#E0703A;
  --accent-dawn-600:#C25A28;
  --paper:#FBFAF7;
  --surface:#FFFFFF;
  --line:#E4E7E3;
  --text:#1A2421;
  --text-muted:#5B6A66;
  --text-invert:#F4F1EA;
  --r-card:16px;
  --r-btn:10px;
  --r-pill:999px;
  --r-img:12px;
  --sh-1:0 1px 2px rgba(16,49,44,.05);
  --sh-2:0 10px 28px -14px rgba(16,49,44,.22);
  --sh-3:0 18px 48px -20px rgba(16,49,44,.30);
  --font:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;font-family:var(--font);font-size:17px;line-height:1.95;
  color:var(--text);background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0}
button,input{font:inherit;color:inherit}
h1,h2,h3,h4,p{margin:0}
svg{display:block}
:focus-visible{outline:2px solid var(--accent-dawn);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(251,250,247,.62);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(16,49,44,.08);
  box-shadow:var(--sh-1);
  transition:background .24s ease,box-shadow .24s ease;
}
.site-header.is-stuck{background:rgba(255,255,255,.94);box-shadow:var(--sh-2)}
.header-inner{display:flex;align-items:center;gap:26px;height:76px;transition:height .24s ease}
.site-header.is-stuck .header-inner{height:64px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:none}
.logo-mark{
  width:36px;height:36px;border-radius:10px;background:var(--brand-ink);
  display:inline-flex;align-items:center;justify-content:center;flex:none;
}
.logo-mark svg{width:20px;height:20px}
.logo-text{font-size:17px;font-weight:700;color:var(--brand-ink);letter-spacing:.01em;white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:auto}
.nav-link{position:relative;font-size:14.5px;font-weight:500;color:var(--text);padding:6px 0;transition:color .2s ease}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:100%;
  background:var(--accent-dawn);transform:scaleX(0);transform-origin:left;
  transition:transform .24s ease;
}
.nav-link:hover{color:var(--brand-ink)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--brand-ink);font-weight:600}
.nav-link.is-active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:12px}
.search-toggle{
  width:40px;height:40px;border-radius:50%;border:1px solid var(--line);
  background:rgba(255,255,255,.72);display:inline-flex;align-items:center;justify-content:center;
  cursor:pointer;color:var(--brand-ink);transition:background .2s,border-color .2s;
}
.search-toggle:hover{background:#fff;border-color:var(--brand-mist)}
.search-toggle svg{width:18px;height:18px}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:var(--r-btn);border:1px solid var(--line);
  background:rgba(255,255,255,.72);cursor:pointer;color:var(--brand-ink);
  align-items:center;justify-content:center;transition:background .2s;
}
.nav-toggle:hover{background:#fff}
.nav-toggle svg{width:20px;height:20px}
.search-panel{
  position:absolute;top:100%;left:0;right:0;background:rgba(255,255,255,.97);
  border-bottom:1px solid var(--line);box-shadow:var(--sh-2);
  padding:18px 0;display:none;
}
.search-panel.is-open{display:block}
.search-form{display:flex;gap:12px;align-items:center}
.field{
  width:100%;height:48px;border:1px solid var(--line);border-radius:var(--r-btn);
  padding:0 16px;background:#fff;color:var(--text);font-size:15px;transition:border-color .2s,box-shadow .2s;
}
.field:focus{outline:none;border-color:var(--accent-dawn);box-shadow:0 0 0 3px rgba(224,112,58,.12)}

/* 抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(16,49,44,.45);z-index:60;
  opacity:0;visibility:hidden;transition:opacity .24s ease,visibility .24s ease;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:82vw;max-width:360px;background:var(--paper);
  z-index:61;transform:translateX(100%);transition:transform .28s ease;
  display:flex;flex-direction:column;padding:20px 22px;overflow-y:auto;
  border-left:1px solid var(--line);
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:18px;border-bottom:1px solid var(--line)}
.drawer-close{
  width:38px;height:38px;border-radius:var(--r-btn);border:1px solid var(--line);background:#fff;
  cursor:pointer;color:var(--brand-ink);font-size:20px;line-height:1;
}
.drawer-nav{display:flex;flex-direction:column;margin-top:10px}
.drawer-link{
  height:52px;display:flex;align-items:center;font-size:15.5px;color:var(--text);
  border-bottom:1px solid var(--line);transition:color .2s,padding-left .2s;
}
.drawer-link:hover,.drawer-link.is-active{color:var(--brand-ink);font-weight:600;padding-left:6px}
.drawer-foot{margin-top:auto;padding-top:22px}
.drawer-cta{width:100%}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1;padding:14px 24px;
  border-radius:var(--r-btn);border:1px solid transparent;cursor:pointer;
  transition:background .2s,color .2s,border-color .2s,transform .15s,box-shadow .2s;
  text-align:center;
}
.btn-primary{background:var(--brand-ink);color:var(--text-invert);box-shadow:var(--sh-1)}
.btn-primary:hover{background:var(--brand-ink-700);transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(1px);box-shadow:var(--sh-1)}
.btn-ghost{background:transparent;color:var(--brand-ink);border-color:var(--brand-ink)}
.btn-ghost:hover{background:rgba(203,221,214,.32);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-accent{background:var(--accent-dawn);color:#fff}
.btn-accent:hover{background:var(--accent-dawn-600);transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-accent:active{transform:translateY(1px)}
.btn-sm{padding:10px 18px;font-size:14px}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none}

/* ============ 文章页头 ============ */
.article-hero{
  position:relative;
  padding:52px 0 46px;
  border-bottom:1px solid var(--line);
  background-image:linear-gradient(180deg,rgba(238,244,241,.95),rgba(251,250,247,.98)),url(/assets/images/backpic/back-1.png);
  background-size:cover;
  background-position:center;
  background-repeat:no-repeat;
}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13.5px;color:var(--text-muted);margin-bottom:22px;
}
.breadcrumb a{transition:color .2s}
.breadcrumb a:hover{color:var(--accent-dawn)}
.breadcrumb .sep{color:var(--brand-mist)}
.breadcrumb .current{
  color:var(--text);max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.badge{
  display:inline-flex;align-items:center;gap:6px;background:var(--brand-mist);color:var(--brand-ink);
  font-size:13px;font-weight:600;padding:6px 14px;border-radius:var(--r-pill);margin-bottom:18px;
}
.article-title{
  font-size:46px;line-height:1.28;letter-spacing:-.01em;font-weight:700;
  color:var(--brand-ink);max-width:900px;margin-bottom:22px;
  overflow-wrap:break-word;word-break:break-word;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  font-size:14px;color:var(--text-muted);
}
.meta-sep{width:4px;height:4px;border-radius:50%;background:var(--brand-mist);display:inline-block}

/* ============ 文章布局 ============ */
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:64px;
  padding-top:56px;padding-bottom:88px;align-items:start;
}
.article-main{min-width:0;max-width:780px}

/* 正文排版 */
.article-content{font-size:17px;line-height:2;color:#23302C;overflow-wrap:break-word}
.article-content p{margin:0 0 1.4em}
.article-content h2{
  font-size:27px;line-height:1.4;font-weight:700;color:var(--brand-ink);
  margin:2.2em 0 .9em;padding-left:16px;border-left:4px solid var(--brand-ink);
}
.article-content h3{font-size:21px;line-height:1.5;font-weight:700;color:var(--brand-ink);margin:1.6em 0 .7em}
.article-content h4{font-size:18px;font-weight:700;color:var(--brand-ink-700);margin:1.4em 0 .6em}
.article-content ul,.article-content ol{margin:0 0 1.4em;padding-left:1.4em}
.article-content li{margin-bottom:.5em;line-height:1.9}
.article-content li::marker{color:var(--accent-dawn)}
.article-content blockquote{
  background:var(--brand-mist-50);border-left:3px solid var(--accent-dawn);
  margin:1.6em 0;padding:18px 22px;border-radius:0 var(--r-img) var(--r-img) 0;
  color:#2C3B37;font-size:16.5px;
}
.article-content blockquote p:last-child{margin-bottom:0}
.article-content img{
  border-radius:var(--r-img);margin:1.7em auto;box-shadow:var(--sh-1);
}
.article-content figure{margin:1.7em 0}
.article-content figcaption,.article-content .caption{
  font-size:13px;color:var(--text-muted);text-align:center;line-height:1.7;margin-top:10px;
}
.article-content table{
  width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15.5px;
  border:1px solid var(--line);border-radius:var(--r-img);overflow:hidden;
}
.article-content th,.article-content td{border:1px solid var(--line);padding:12px 14px;text-align:left;vertical-align:top}
.article-content th{background:var(--brand-mist-50);font-weight:600;color:var(--brand-ink)}
.article-content a{
  color:var(--brand-ink-700);text-decoration:underline;
  text-underline-offset:3px;text-decoration-thickness:1px;
  transition:color .2s;
}
.article-content a:hover{color:var(--accent-dawn-600)}
.article-content hr{border:0;border-top:1px solid var(--line);margin:2.2em 0}
.article-content code{
  background:var(--brand-mist-50);border:1px solid var(--line);border-radius:6px;
  padding:1px 6px;font-size:15px;
}

/* 标签 */
.article-tags{
  display:flex;flex-wrap:wrap;gap:10px;align-items:center;
  margin-top:40px;padding-top:26px;border-top:1px solid var(--line);
}
.article-tags .tags-label{font-size:14px;color:var(--text-muted);margin-right:2px}
.tag{
  display:inline-block;font-size:13px;padding:6px 13px;border-radius:var(--r-pill);
  background:var(--brand-mist-50);color:var(--brand-ink-700);border:1px solid var(--brand-mist);
  transition:background .2s,color .2s;
}
a.tag:hover{background:var(--brand-mist);color:var(--brand-ink)}

/* 上一篇/下一篇 */
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:30px}
.post-nav a{
  display:block;border:1px solid var(--line);border-radius:var(--r-card);
  padding:18px 20px;background:var(--surface);box-shadow:var(--sh-1);
  transition:transform .24s,border-color .24s,box-shadow .24s;
}
.post-nav a:hover{transform:translateY(-2px);border-color:var(--brand-mist);box-shadow:var(--sh-2)}
.post-nav .dir{display:block;font-size:13px;color:var(--text-muted);margin-bottom:8px}
.post-nav .ttl{display:block;font-size:15.5px;font-weight:600;color:var(--brand-ink);line-height:1.55}

/* 空态 */
.empty-state{
  border:1px dashed var(--brand-mist);border-radius:var(--r-card);
  padding:64px 32px;text-align:center;background:var(--surface);
}
.empty-state .empty-ico{
  width:56px;height:56px;border-radius:50%;background:var(--brand-mist-50);
  display:inline-flex;align-items:center;justify-content:center;margin-bottom:20px;
  color:var(--brand-ink-700);
}
.empty-state h2{font-size:22px;color:var(--brand-ink);margin-bottom:12px}
.empty-state p{font-size:15px;color:var(--text-muted);margin-bottom:26px}

/* ============ 侧栏 ============ */
.article-side{position:sticky;top:96px;display:grid;gap:24px}
.side-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px;box-shadow:var(--sh-1);
}
.side-title{
  font-size:15px;font-weight:700;color:var(--brand-ink);margin-bottom:16px;
  display:flex;align-items:center;gap:8px;
}
.side-title::before{content:"";width:3px;height:14px;background:var(--accent-dawn);border-radius:2px}
.side-list{list-style:none;display:grid}
.side-list li{border-bottom:1px solid var(--line)}
.side-list li:last-child{border-bottom:0}
.side-list a{
  display:block;padding:12px 0;font-size:14.5px;line-height:1.7;color:var(--text);
  transition:color .2s,padding-left .2s;
}
.side-list a:hover{color:var(--accent-dawn);padding-left:4px}
.tag-cloud{display:flex;flex-wrap:wrap;gap:8px}
.side-cta{
  background:var(--brand-ink);color:var(--text-invert);border-radius:var(--r-card);
  padding:26px 22px;box-shadow:var(--sh-2);
}
.side-cta h3{font-size:18px;line-height:1.5;color:#fff;margin-bottom:10px}
.side-cta p{font-size:14px;line-height:1.85;color:rgba(244,241,234,.75);margin-bottom:18px}
.side-cta .btn{width:100%}

/* ============ 相关推荐 ============ */
.section{padding:88px 0}
.section-head{margin-bottom:38px}
.section-eyebrow{
  font-size:13px;letter-spacing:.12em;color:var(--accent-dawn);
  font-weight:700;text-transform:uppercase;margin-bottom:12px;display:block;
}
.section-head h2{font-size:34px;line-height:1.3;color:var(--brand-ink);font-weight:700}
.section-head p{font-size:16px;color:var(--text-muted);margin-top:12px;max-width:680px}
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{
  display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden;
  transition:transform .24s,border-color .24s,box-shadow .24s;
}
.card:hover{transform:translateY(-2px);border-color:var(--brand-mist);box-shadow:var(--sh-2)}
.card-media{aspect-ratio:16/10;overflow:hidden;background:var(--brand-mist-50)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .32s ease}
.card:hover .card-media img{transform:scale(1.03)}
.card-body{padding:20px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{font-size:17.5px;line-height:1.55;color:var(--brand-ink);font-weight:700}
.card-body p{font-size:14.5px;color:var(--text-muted);line-height:1.85}
.card-meta{font-size:13px;color:var(--text-muted);display:flex;align-items:center;gap:10px;margin-top:auto}

/* ============ CTA 收口 ============ */
.cta-band{padding:0 0 96px}
.cta-inner{
  background:var(--brand-mist-50);border:1px solid var(--brand-mist);border-radius:24px;
  padding:56px;display:grid;grid-template-columns:1.25fr .75fr;gap:40px;align-items:center;
}
.cta-inner h2{font-size:32px;line-height:1.32;color:var(--brand-ink);margin-bottom:14px}
.cta-inner p{font-size:16px;color:var(--text-muted);line-height:1.9}
.cta-actions{display:flex;flex-direction:column;gap:14px}
.cta-actions .hint{font-size:13.5px;color:var(--text-muted);line-height:1.7}

/* ============ 页脚 ============ */
.site-footer{background:var(--brand-ink);color:var(--text-invert);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.footer-col+.footer-col{border-left:1px solid rgba(255,255,255,.12);padding-left:40px}
.footer-brand{display:inline-flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .logo-mark{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14)}
.footer-brand .logo-text{color:var(--text-invert)}
.footer-about{color:rgba(244,241,234,.72);font-size:14.5px;line-height:1.85;max-width:340px}
.footer-title{font-size:14px;font-weight:600;color:#fff;letter-spacing:.06em;margin-bottom:16px}
.footer-links{list-style:none;display:grid;gap:11px}
.footer-links a{color:rgba(244,241,234,.72);font-size:14.5px;transition:color .2s}
.footer-links a:hover{color:#fff}
.footer-contact{list-style:none;display:grid;gap:11px;font-size:14.5px;color:rgba(244,241,234,.72);line-height:1.8}
.footer-contact strong{color:var(--text-invert);font-weight:600}
.footer-bottom{
  margin-top:56px;border-top:1px solid rgba(255,255,255,.12);padding:22px 0;
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:16px;
  font-size:13.5px;color:rgba(244,241,234,.62);
}
.footer-bottom a{color:rgba(244,241,234,.72);transition:color .2s}
.footer-bottom a:hover{color:#fff}

/* 回到顶部 */
.to-top{
  position:fixed;right:24px;bottom:28px;width:46px;height:46px;border-radius:50%;
  background:var(--brand-ink);color:var(--text-invert);border:0;cursor:pointer;
  display:inline-flex;align-items:center;justify-content:center;box-shadow:var(--sh-2);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .24s,visibility .24s,transform .24s,background .2s;z-index:40;
}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{background:var(--brand-ink-700)}
.to-top svg{width:18px;height:18px}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  .container{padding:0 24px}
  .nav-links{display:none}
  .nav-toggle{display:inline-flex}
  .search-toggle{display:none}
  .article-title{font-size:36px}
  .article-layout{grid-template-columns:1fr;gap:44px;padding-top:44px;padding-bottom:64px}
  .article-main{max-width:100%}
  .article-side{position:static;top:auto}
  .section{padding:64px 0}
  .section-head h2{font-size:28px}
  .rel-grid{grid-template-columns:1fr 1fr}
  .cta-inner{grid-template-columns:1fr;padding:40px 32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .footer-col+.footer-col{border-left:0;padding-left:0}
}
@media (max-width:767px){
  body{font-size:16px}
  .container{padding:0 18px}
  .header-inner{height:64px;gap:14px}
  .site-header.is-stuck .header-inner{height:58px}
  .logo-text{font-size:15.5px}
  .article-hero{padding:36px 0 32px}
  .article-title{font-size:28px;line-height:1.35}
  .breadcrumb .current{max-width:200px}
  .article-content{font-size:16.5px;line-height:2}
  .article-content h2{font-size:23px;margin-top:1.9em}
  .article-content h3{font-size:19px}
  .post-nav{grid-template-columns:1fr}
  .rel-grid{grid-template-columns:1fr}
  .section{padding:56px 0}
  .section-head h2{font-size:24px}
  .cta-inner{padding:32px 22px;border-radius:18px}
  .cta-inner h2{font-size:23px}
  .cta-band{padding:0 0 64px}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer-bottom{flex-direction:column;margin-top:40px}
  .btn{min-height:44px}
  .drawer-link{height:52px}
}

/* roulang page: category1 */
:root{
  --brand-ink:#10312C;
  --brand-ink-700:#1C4A43;
  --brand-mist:#CBDDD6;
  --brand-mist-50:#EEF4F1;
  --accent-dawn:#E0703A;
  --accent-dawn-600:#C25A28;
  --paper:#FBFAF7;
  --surface:#FFFFFF;
  --line:#E4E7E3;
  --text:#1A2421;
  --text-muted:#5B6A66;
  --text-invert:#F4F1EA;
  --r-card:16px;
  --r-btn:10px;
  --r-pill:999px;
  --r-img:12px;
  --sh-1:0 1px 2px rgba(16,49,44,.05);
  --sh-2:0 10px 28px -14px rgba(16,49,44,.22);
  --sh-3:0 18px 48px -20px rgba(16,49,44,.30);
  --space-section:104px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:17px;
  line-height:1.95;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--brand-ink-700);text-decoration:none;text-underline-offset:3px;}
a:hover{color:var(--brand-ink);}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input{font-family:inherit;font-size:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
p{margin:0 0 1.4em;}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--brand-ink);letter-spacing:.2px;}
:focus-visible{outline:2px solid var(--accent-dawn);outline-offset:2px;border-radius:4px;}
.container{max-width:1200px;margin:0 auto;padding:0 32px;}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(251,250,247,.62);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(16,49,44,.08);
  box-shadow:var(--sh-1);
  transition:background .24s ease,box-shadow .24s ease;
}
.site-header.is-stuck{
  background:rgba(255,255,255,.94);
  box-shadow:var(--sh-2);
}
.nav-inner{
  max-width:1200px;margin:0 auto;padding:0 32px;
  height:76px;display:flex;align-items:center;gap:28px;
  transition:height .24s ease;
}
.site-header.is-stuck .nav-inner{height:64px;}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:36px;height:36px;border-radius:11px;flex-shrink:0;
  background:linear-gradient(145deg,var(--brand-ink),var(--brand-ink-700));
  display:inline-flex;align-items:center;justify-content:center;
  box-shadow:var(--sh-1);
}
.logo-mark svg{width:20px;height:20px;}
.logo-text{font-size:16px;font-weight:700;color:var(--brand-ink);letter-spacing:.2px;white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:6px;}
.nav-link{
  position:relative;display:inline-block;
  padding:8px 12px;font-size:14px;color:var(--text-muted);
  border-radius:var(--r-btn);transition:color .2s ease,background .2s ease;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:4px;height:2px;
  background:var(--accent-dawn);border-radius:2px;
  transform:scaleX(0);transform-origin:left center;
  transition:transform .26s ease;
}
.nav-link:hover{color:var(--brand-ink);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--brand-ink);font-weight:700;}
.nav-link.is-active::after{transform:scaleX(1);}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:12px;}
.search-toggle{
  width:40px;height:40px;border-radius:var(--r-pill);
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);background:var(--surface);color:var(--brand-ink);
  transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.search-toggle:hover{border-color:var(--brand-mist);box-shadow:var(--sh-1);transform:translateY(-1px);}
.search-box{display:none;}
.search-box.is-open{display:block;}
.search-box input{
  height:40px;width:190px;padding:0 14px;border-radius:var(--r-btn);
  border:1px solid var(--line);background:var(--surface);color:var(--text);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.search-box input:focus{outline:none;border-color:var(--accent-dawn);box-shadow:0 0 0 3px rgba(224,112,58,.12);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.2px;
  transition:background .22s ease,color .22s ease,transform .18s ease,box-shadow .22s ease,border-color .22s ease;
  white-space:nowrap;
}
.btn:active{transform:translateY(1px);}
.btn:disabled{opacity:.4;cursor:not-allowed;}
.btn-primary{background:var(--brand-ink);color:var(--text-invert);box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--brand-ink-700);color:var(--text-invert);transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-outline{background:transparent;color:var(--brand-ink);border:1px solid var(--brand-ink);}
.btn-outline:hover{background:rgba(203,221,214,.12);color:var(--brand-ink);transform:translateY(-1px);}
.btn-accent{background:var(--accent-dawn);color:#fff;box-shadow:var(--sh-1);}
.btn-accent:hover{background:var(--accent-dawn-600);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-pill{border-radius:var(--r-pill);height:42px;padding:0 20px;font-size:14px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--r-btn);
  align-items:center;justify-content:center;border:1px solid var(--line);background:var(--surface);
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--brand-ink);border-radius:2px;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--brand-ink);border-radius:2px;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* 抽屉 */
.drawer-overlay{
  position:fixed;inset:0;background:rgba(16,49,44,.45);
  opacity:0;visibility:hidden;transition:opacity .26s ease,visibility .26s ease;z-index:70;
}
.drawer-overlay.is-open{opacity:1;visibility:visible;}
.mobile-drawer{
  position:fixed;top:0;right:0;height:100%;width:82vw;max-width:360px;
  background:var(--paper);z-index:80;transform:translateX(102%);
  transition:transform .3s cubic-bezier(.4,0,.2,1);
  box-shadow:var(--sh-3);display:flex;flex-direction:column;padding:20px 22px 32px;
}
.mobile-drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line);}
.drawer-close{width:44px;height:44px;border-radius:var(--r-btn);display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--line);background:var(--surface);font-size:20px;color:var(--brand-ink);}
.drawer-nav{margin-top:8px;display:flex;flex-direction:column;}
.drawer-nav a{
  display:flex;align-items:center;height:52px;font-size:16px;color:var(--text);
  border-bottom:1px solid var(--line);
}
.drawer-nav a.is-active{color:var(--brand-ink);font-weight:700;}
.drawer-cta{margin-top:24px;display:flex;flex-direction:column;gap:12px;}

/* ============ 横幅 ============ */
.page-banner{
  background:
    radial-gradient(1000px 420px at 82% -30%, rgba(203,221,214,.55), transparent 70%),
    var(--brand-mist-50);
  border-bottom:1px solid var(--line);
  padding:64px 0 52px;
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-muted);margin-bottom:18px;}
.breadcrumb a{color:var(--text-muted);}
.breadcrumb a:hover{color:var(--brand-ink);}
.breadcrumb span.sep{color:var(--brand-mist);}
.banner-tag{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--surface);border:1px solid var(--brand-mist);
  color:var(--brand-ink);font-size:13px;font-weight:600;
  padding:5px 14px;border-radius:var(--r-pill);margin-bottom:18px;
}
.page-banner h1{font-size:46px;line-height:1.25;max-width:880px;}
.banner-lead{max-width:760px;margin:20px 0 0;color:var(--text-muted);font-size:17px;line-height:1.9;}
.banner-meta{display:flex;flex-wrap:wrap;gap:10px 26px;margin-top:24px;font-size:14px;color:var(--text-muted);}
.banner-meta li{display:flex;align-items:center;gap:8px;}
.dot{width:6px;height:6px;border-radius:50%;background:var(--accent-dawn);flex-shrink:0;}

/* ============ 主体两栏 ============ */
.main-wrap{padding:var(--space-section) 0 0;}
.layout{display:grid;grid-template-columns:264px minmax(0,1fr);gap:56px;align-items:start;}
.toc{position:sticky;top:104px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);padding:22px 20px;box-shadow:var(--sh-1);}
.toc-title{font-size:13px;font-weight:700;letter-spacing:1.4px;color:var(--text-muted);text-transform:none;margin-bottom:14px;}
.toc-nav{display:flex;flex-direction:column;gap:2px;}
.toc-link{
  display:block;padding:9px 0 9px 14px;font-size:15px;color:var(--text-muted);
  border-left:2px solid var(--line);
  transition:color .2s ease,border-color .2s ease,background .2s ease;
}
.toc-link:hover{color:var(--brand-ink);border-left-color:var(--brand-mist);background:rgba(238,244,241,.6);}
.toc-link.is-active{color:var(--brand-ink);font-weight:700;border-left-color:var(--accent-dawn);}
.toc-note{margin-top:18px;padding-top:16px;border-top:1px solid var(--line);font-size:13px;line-height:1.8;color:var(--text-muted);}

.group{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:34px 34px 30px;box-shadow:var(--sh-1);
  margin-bottom:28px;scroll-margin-top:110px;
  transition:border-color .28s ease,box-shadow .28s ease,transform .28s ease;
}
.group:hover{border-color:var(--brand-mist);box-shadow:var(--sh-2);}
.group-head{display:flex;align-items:baseline;gap:14px;margin-bottom:14px;}
.group-no{
  font-size:14px;font-weight:700;color:var(--accent-dawn);letter-spacing:1px;
  flex-shrink:0;padding-top:6px;
}
.group h2{font-size:26px;line-height:1.35;}
.group-lead{color:var(--text-muted);margin-bottom:20px;font-size:16.5px;}
.point-list{border-top:1px solid var(--line);}
.point-item{
  display:flex;gap:12px;padding:13px 0;border-bottom:1px solid var(--line);
  font-size:16px;line-height:1.8;
}
.point-item:last-child{border-bottom:0;}
.point-item .mark{
  flex-shrink:0;width:20px;height:20px;margin-top:8px;border-radius:6px;
  background:var(--brand-mist-50);border:1px solid var(--brand-mist);
  display:inline-flex;align-items:center;justify-content:center;
}
.point-item .mark svg{width:11px;height:11px;}
.group-figure{margin-top:22px;border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line);}
.group-figure img{width:100%;aspect-ratio:16/7;object-fit:cover;transition:transform .32s ease;}
.group:hover .group-figure img{transform:scale(1.03);}
.group-figure figcaption{font-size:13px;color:var(--text-muted);text-align:center;padding:10px 14px;background:var(--brand-mist-50);}

/* ============ 时间线 ============ */
.steps-section{padding:var(--space-section) 0 0;}
.section-head{max-width:720px;margin-bottom:44px;}
.eyebrow{
  display:inline-block;font-size:13px;font-weight:700;letter-spacing:1.6px;
  color:var(--accent-dawn);margin-bottom:12px;
}
.section-head h2{font-size:34px;line-height:1.3;margin-bottom:14px;}
.section-head p{color:var(--text-muted);margin:0;}
.steps{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:28px;}
.steps::before{
  content:"";position:absolute;top:26px;left:2%;right:2%;height:1px;background:var(--line);z-index:0;
}
.step{position:relative;z-index:1;}
.step-no{
  width:52px;height:52px;border-radius:50%;
  background:var(--surface);border:1px solid var(--brand-mist);color:var(--brand-ink);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:16px;font-weight:700;box-shadow:var(--sh-1);
}
.step h3{font-size:19px;margin:20px 0 10px;}
.step p{color:var(--text-muted);font-size:15.5px;margin:0;line-height:1.85;}

/* ============ 图片网格 ============ */
.gallery{padding:var(--space-section) 0 0;}
.figure-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:28px;}
.figure-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease;
}
.figure-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--brand-mist);}
.figure-card img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .32s ease;}
.figure-card:hover img{transform:scale(1.03);}
.figure-body{padding:20px 22px 22px;}
.figure-body h3{font-size:19px;margin-bottom:8px;}
.figure-body p{color:var(--text-muted);font-size:15px;margin:0;line-height:1.85;}
.badge{
  display:inline-block;background:var(--brand-mist-50);color:var(--brand-ink);
  border:1px solid var(--brand-mist);font-size:13px;font-weight:600;
  padding:3px 12px;border-radius:var(--r-pill);margin-bottom:12px;
}

/* ============ FAQ ============ */
.faq-section{padding:var(--space-section) 0 0;}
.faq-list{display:flex;flex-direction:column;gap:14px;}
.faq-item{
  border:1px solid var(--line);border-radius:12px;background:var(--surface);
  overflow:hidden;transition:border-color .24s ease,background .24s ease,box-shadow .24s ease;
}
.faq-item:hover{border-color:var(--brand-mist);box-shadow:var(--sh-1);}
.faq-item.is-open{background:#FCFAF6;border-left:3px solid var(--accent-dawn);box-shadow:var(--sh-1);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 22px;text-align:left;font-size:17px;font-weight:600;color:var(--brand-ink);
  line-height:1.6;min-height:44px;
}
.faq-icon{
  flex-shrink:0;width:26px;height:26px;border-radius:50%;
  border:1px solid var(--brand-mist);position:relative;
  transition:transform .26s ease,background .26s ease,border-color .26s ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--brand-ink);border-radius:2px;
  top:50%;left:50%;transform:translate(-50%,-50%);
}
.faq-icon::before{width:11px;height:2px;}
.faq-icon::after{width:2px;height:11px;}
.faq-item.is-open .faq-icon{transform:rotate(45deg);background:var(--accent-dawn);border-color:var(--accent-dawn);}
.faq-item.is-open .faq-icon::before,.faq-item.is-open .faq-icon::after{background:#fff;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s ease;}
.faq-a-inner{padding:0 22px 22px;color:var(--text-muted);font-size:16px;}
.faq-a-inner p{margin:0 0 12px;}
.faq-a-inner p:last-child{margin-bottom:0;}
.faq-a-inner ul{display:flex;flex-direction:column;gap:8px;}
.faq-a-inner li{position:relative;padding-left:18px;line-height:1.85;}
.faq-a-inner li::before{
  content:"";position:absolute;left:0;top:12px;width:6px;height:6px;border-radius:50%;
  background:var(--brand-mist);
}

/* ============ 交叉链接 ============ */
.cross-link{
  margin-top:var(--space-section);
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px 30px;display:flex;align-items:center;justify-content:space-between;
  gap:24px;box-shadow:var(--sh-1);flex-wrap:wrap;
  transition:border-color .28s ease,box-shadow .28s ease;
}
.cross-link:hover{border-color:var(--brand-mist);box-shadow:var(--sh-2);}
.cross-link h3{font-size:20px;margin-bottom:8px;}
.cross-link p{color:var(--text-muted);font-size:15px;margin:0;}

/* ============ CTA ============ */
.cta-section{padding:var(--space-section) 0 0;}
.cta-card{
  background:var(--brand-ink);border-radius:var(--r-card);
  padding:52px 48px;color:var(--text-invert);
  display:grid;grid-template-columns:1.1fr 1fr;gap:48px;align-items:center;
  box-shadow:var(--sh-3);
  position:relative;overflow:hidden;
}
.cta-card::after{
  content:"";position:absolute;right:-120px;top:-120px;width:340px;height:340px;
  border-radius:50%;background:rgba(203,221,214,.10);
}
.cta-card h2{color:var(--text-invert);font-size:32px;line-height:1.35;margin-bottom:16px;}
.cta-card p{color:rgba(244,241,234,.78);font-size:16px;margin:0;}
.cta-form{position:relative;z-index:1;display:flex;flex-direction:column;gap:14px;}
.field label{display:block;font-size:13px;color:rgba(244,241,234,.72);margin-bottom:6px;}
.field input{
  width:100%;height:48px;padding:0 14px;border-radius:var(--r-btn);
  border:1px solid rgba(244,241,234,.24);background:rgba(255,255,255,.06);
  color:var(--text-invert);transition:border-color .2s ease,box-shadow .2s ease;
}
.field input::placeholder{color:rgba(244,241,234,.45);}
.field input:focus{outline:none;border-color:var(--accent-dawn);box-shadow:0 0 0 3px rgba(224,112,58,.20);}
.field.has-error input{border-color:#E4573C;}
.field-error{display:none;font-size:13px;color:#F0A08A;margin-top:6px;}
.field.has-error .field-error{display:block;}
.form-note{font-size:13px;color:rgba(244,241,234,.6);margin:2px 0 0;}
.form-success{
  display:none;background:var(--brand-mist-50);color:var(--brand-ink);
  border-radius:var(--r-btn);padding:12px 16px;font-size:14px;font-weight:600;
}
.form-success.is-visible{display:block;}

/* ============ 页脚 ============ */
.site-footer{background:var(--brand-ink);color:var(--text-invert);margin-top:var(--space-section);padding:72px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:0;}
.footer-col{padding:0 28px;border-left:1px solid rgba(255,255,255,.12);}
.footer-col:first-child{padding-left:0;border-left:0;}
.footer-col:last-child{padding-right:0;}
.footer-brand{display:inline-flex;align-items:center;gap:10px;margin-bottom:18px;}
.footer-brand .logo-mark{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);}
.footer-brand .logo-text{color:var(--text-invert);font-size:16px;font-weight:700;}
.footer-about{font-size:14.5px;line-height:1.85;color:rgba(244,241,234,.7);margin:0;}
.footer-title{font-size:14px;font-weight:700;color:var(--text-invert);letter-spacing:.6px;margin:0 0 16px;}
.footer-links li,.footer-contact li{font-size:14.5px;line-height:1.8;margin-bottom:12px;color:rgba(244,241,234,.72);}
.footer-links a{color:rgba(244,241,234,.72);transition:color .2s ease;}
.footer-links a:hover{color:var(--accent-dawn);}
.footer-contact strong{color:var(--text-invert);font-weight:600;}
.footer-bottom{
  margin-top:56px;border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0 26px;display:flex;flex-wrap:wrap;gap:12px 24px;
  align-items:center;justify-content:space-between;font-size:13.5px;color:rgba(244,241,234,.62);
}
.footer-bottom a{color:rgba(244,241,234,.72);}
.footer-bottom a:hover{color:var(--accent-dawn);}

/* ============ 回到顶部 ============ */
.to-top{
  position:fixed;right:26px;bottom:26px;z-index:55;
  width:46px;height:46px;border-radius:var(--r-pill);
  background:var(--surface);border:1px solid var(--line);color:var(--brand-ink);
  display:inline-flex;align-items:center;justify-content:center;
  box-shadow:var(--sh-2);opacity:0;visibility:hidden;
  transition:opacity .24s ease,visibility .24s ease,transform .2s ease,background .2s ease;
}
.to-top.is-visible{opacity:1;visibility:visible;}
.to-top:hover{background:var(--brand-mist-50);transform:translateY(-2px);}

/* ============ 响应式 ============ */
@media (max-width:1439px){
  .container,.nav-inner{max-width:960px;}
  .layout{grid-template-columns:240px minmax(0,1fr);gap:40px;}
}
@media (max-width:1023px){
  :root{--space-section:76px;}
  .container,.nav-inner{padding:0 24px;}
  .nav-links{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-actions .btn-pill{display:none;}
  .search-box input{width:150px;}
  .page-banner h1{font-size:36px;}
  .page-banner{padding:48px 0 42px;}
  .layout{grid-template-columns:1fr;gap:28px;}
  .toc{position:static;padding:18px;}
  .toc-nav{flex-direction:row;overflow-x:auto;gap:8px;padding-bottom:6px;-webkit-overflow-scrolling:touch;}
  .toc-link{
    flex:0 0 auto;white-space:nowrap;border-left:0;border-radius:var(--r-pill);
    border:1px solid var(--line);padding:8px 16px;font-size:14px;
  }
  .toc-link.is-active{border-color:var(--accent-dawn);background:#FCFAF6;}
  .toc-note{display:none;}
  .steps{grid-template-columns:repeat(2,1fr);gap:32px 24px;}
  .steps::before{display:none;}
  .cta-card{grid-template-columns:1fr;gap:32px;padding:40px 32px;}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:36px 0;}
  .footer-col{padding:0 22px;}
  .footer-col:nth-child(odd){padding-left:0;border-left:0;}
  .footer-col:nth-child(even){padding-right:0;}
}
@media (max-width:767px){
  :root{--space-section:60px;}
  body{font-size:16px;line-height:1.9;}
  .container,.nav-inner{padding:0 18px;}
  .nav-inner{height:64px;}
  .site-header.is-stuck .nav-inner{height:58px;}
  .logo-text{font-size:15px;}
  .search-box{display:none !important;}
  .page-banner h1{font-size:28px;}
  .page-banner{padding:36px 0 34px;}
  .banner-lead{font-size:16px;}
  .group{padding:24px 20px 22px;}
  .group h2{font-size:21px;}
  .group-head{gap:10px;}
  .point-item{font-size:15.5px;}
  .section-head h2{font-size:26px;}
  .steps{grid-template-columns:1fr;gap:22px;}
  .figure-grid{grid-template-columns:1fr;gap:20px;}
  .faq-q{padding:16px 18px;font-size:16px;}
  .faq-a-inner{padding:0 18px 18px;}
  .cross-link{padding:22px 20px;flex-direction:column;align-items:flex-start;}
  .cta-card{padding:32px 22px;}
  .cta-card h2{font-size:24px;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .footer-col{padding:0;border-left:0;border-top:1px solid rgba(255,255,255,.12);padding-top:24px;}
  .footer-col:first-child{border-top:0;padding-top:0;}
  .to-top{right:16px;bottom:16px;}
}
@media (max-width:520px){
  .btn{width:100%;}
  .nav-actions .btn{width:auto;}
}

/* roulang page: category2 */
/* ============ 设计变量 ============ */
:root{
  --brand-ink:#10312C;
  --brand-ink-700:#1C4A43;
  --brand-mist:#CBDDD6;
  --brand-mist-50:#EEF4F1;
  --accent-dawn:#E0703A;
  --accent-dawn-600:#C25A28;
  --paper:#FBFAF7;
  --surface:#FFFFFF;
  --line:#E4E7E3;
  --text:#1A2421;
  --text-muted:#5B6A66;
  --text-invert:#F4F1EA;
  --r-card:16px;
  --r-btn:10px;
  --r-pill:999px;
  --r-img:12px;
  --sh-1:0 1px 2px rgba(16,49,44,.05);
  --sh-2:0 10px 28px -14px rgba(16,49,44,.22);
  --sh-3:0 18px 48px -20px rgba(16,49,44,.30);
  --sp-section:104px;
}

/* ============ 基础 reset ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:17px;
  line-height:1.9;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
img{display:block;max-width:100%;height:auto;}
a{color:var(--brand-ink-700);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--accent-dawn-600);}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;background:none;border:0;}
svg{display:block;}
:focus-visible{outline:2px solid var(--accent-dawn);outline-offset:2px;border-radius:4px;}

/* ============ 容器与通用 ============ */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
.section{padding:var(--sp-section) 0;}
.section--tight{padding:72px 0;}
.section--mist{background:var(--brand-mist-50);}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head h2{font-size:34px;line-height:1.3;letter-spacing:-.4px;color:var(--brand-ink);font-weight:700;}
.section-head p{margin-top:14px;color:var(--text-muted);font-size:16px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.08em;color:var(--accent-dawn-600);
  background:rgba(224,112,58,.10);border:1px solid rgba(224,112,58,.18);
  padding:5px 12px;border-radius:var(--r-pill);margin-bottom:18px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent-dawn);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;
  transition:background .2s ease,color .2s ease,box-shadow .2s ease,transform .2s ease,border-color .2s ease;
  border:1px solid transparent;white-space:nowrap;
}
.btn-primary{background:var(--brand-ink);color:var(--text-invert);}
.btn-primary:hover{background:var(--brand-ink-700);color:var(--text-invert);transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(1px);box-shadow:none;}
.btn-ghost{background:transparent;color:var(--brand-ink);border-color:var(--brand-ink);}
.btn-ghost:hover{background:rgba(203,221,214,.35);color:var(--brand-ink);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-accent{background:var(--accent-dawn);color:#fff;box-shadow:var(--sh-1);}
.btn-accent:hover{background:var(--accent-dawn-600);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-accent:active{transform:translateY(1px);box-shadow:none;}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px;}
.btn:disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none;}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(251,250,247,.62);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(16,49,44,.08);
  box-shadow:var(--sh-1);
  transition:background .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.site-header.is-stuck{background:rgba(255,255,255,.94);box-shadow:var(--sh-2);border-bottom-color:rgba(16,49,44,.06);}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:76px;transition:height .24s ease;}
.site-header.is-stuck .nav-inner{height:64px;}

.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:36px;height:36px;border-radius:11px;background:var(--brand-ink);
  display:grid;place-items:center;box-shadow:var(--sh-1);flex-shrink:0;
}
.logo-mark svg{width:21px;height:21px;}
.logo-text{font-size:16px;font-weight:700;color:var(--brand-ink);letter-spacing:.01em;white-space:nowrap;}
.logo:hover .logo-text{color:var(--brand-ink-700);}

.nav-links{display:flex;align-items:center;gap:4px;}
.nav-link{
  position:relative;display:inline-block;padding:10px 14px;border-radius:var(--r-btn);
  font-size:14px;font-weight:500;color:var(--text);transition:color .2s ease,background .2s ease;
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:7px;height:2px;
  background:var(--accent-dawn);border-radius:2px;
  transform:scaleX(0);transform-origin:left;transition:transform .26s ease;
}
.nav-link:hover{color:var(--brand-ink);background:rgba(203,221,214,.22);}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--brand-ink);font-weight:600;}

.nav-actions{display:flex;align-items:center;gap:12px;}
.search-box{
  display:flex;align-items:center;gap:8px;height:40px;padding:0 12px;
  border:1px solid var(--line);border-radius:var(--r-btn);background:var(--surface);
  transition:border-color .2s ease,box-shadow .2s ease,width .24s ease;width:170px;
}
.search-box:focus-within{border-color:var(--accent-dawn);box-shadow:0 0 0 3px rgba(224,112,58,.12);}
.search-box svg{width:16px;height:16px;stroke:var(--text-muted);flex-shrink:0;}
.search-box input{border:0;outline:0;background:transparent;width:100%;font-size:14px;color:var(--text);}
.search-box input::placeholder{color:#9AA8A3;}

.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--r-btn);
  border:1px solid var(--line);background:var(--surface);
  align-items:center;justify-content:center;transition:background .2s ease,border-color .2s ease;
}
.nav-toggle:hover{background:var(--brand-mist-50);border-color:var(--brand-mist);}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--brand-ink);border-radius:2px;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--brand-ink);border-radius:2px;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* 抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(16,49,44,.45);z-index:70;
  opacity:0;visibility:hidden;transition:opacity .24s ease,visibility .24s ease;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:82vw;max-width:400px;z-index:80;
  background:var(--paper);box-shadow:var(--sh-3);
  transform:translateX(100%);transition:transform .28s ease;
  display:flex;flex-direction:column;padding:22px 22px 32px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
.drawer-close{width:44px;height:44px;border-radius:var(--r-btn);border:1px solid var(--line);display:grid;place-items:center;font-size:20px;color:var(--brand-ink);background:var(--surface);}
.drawer-nav{display:flex;flex-direction:column;gap:2px;margin-bottom:24px;}
.drawer-nav a{
  display:flex;align-items:center;min-height:52px;padding:0 14px;border-radius:var(--r-btn);
  font-size:15px;color:var(--text);border-bottom:1px solid var(--line);
}
.drawer-nav a:hover{background:var(--brand-mist-50);color:var(--brand-ink);}
.drawer-nav a.is-active{color:var(--brand-ink);font-weight:600;background:var(--brand-mist-50);}
.drawer-search{margin-bottom:18px;}
.drawer .btn{width:100%;}

/* ============ 页头小横幅 ============ */
.page-banner{
  position:relative;overflow:hidden;background:var(--surface);
  border-top:1px solid var(--brand-mist);
  padding:52px 0 46px;
}
.page-banner::after{
  content:"";position:absolute;right:-110px;top:-90px;width:360px;height:360px;border-radius:50%;
  background:radial-gradient(circle,rgba(203,221,214,.55),rgba(203,221,214,0) 68%);
  pointer-events:none;
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-muted);margin-bottom:20px;position:relative;z-index:1;}
.breadcrumb a{color:var(--text-muted);}
.breadcrumb a:hover{color:var(--accent-dawn-600);}
.breadcrumb .sep{color:var(--brand-mist);}
.breadcrumb .current{color:var(--brand-ink);font-weight:600;}
.page-banner h1{
  position:relative;z-index:1;
  font-size:42px;line-height:1.28;letter-spacing:-.6px;font-weight:700;color:var(--brand-ink);
  max-width:900px;
}
.page-banner .banner-sub{
  position:relative;z-index:1;margin-top:18px;max-width:720px;
  font-size:16px;color:var(--text-muted);
}
.banner-meta{position:relative;z-index:1;display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.pill{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--brand-mist-50);color:var(--brand-ink);
  border:1px solid var(--brand-mist);border-radius:var(--r-pill);
  font-size:13px;padding:6px 14px;line-height:1.4;
}

/* ============ 筛选条 ============ */
.filter-wrap{padding:30px 0 6px;}
.filter-bar{
  display:flex;gap:10px;overflow-x:auto;padding-bottom:10px;
  scrollbar-width:none;-ms-overflow-style:none;
}
.filter-bar::-webkit-scrollbar{display:none;}
.chip{
  flex:0 0 auto;min-height:40px;display:inline-flex;align-items:center;
  padding:0 18px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:var(--surface);color:var(--text-muted);
  font-size:14px;transition:all .2s ease;cursor:pointer;
}
.chip:hover{border-color:var(--brand-mist);color:var(--brand-ink);background:var(--brand-mist-50);}
.chip.is-active{background:var(--brand-ink);border-color:var(--brand-ink);color:var(--text-invert);font-weight:600;}
.chip:focus-visible{outline:2px solid var(--accent-dawn);outline-offset:2px;}

/* ============ 问答手风琴 ============ */
.qa-list{margin-top:8px;border-top:1px solid var(--line);}
.qa-item{
  position:relative;border-bottom:1px solid var(--line);
  transition:background .24s ease;
}
.qa-item.is-open{background:#FCFAF6;}
.qa-item.is-open::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--accent-dawn);
  border-radius:0 3px 3px 0;
}
.qa-head{margin:0;}
.qa-q{
  width:100%;display:flex;align-items:flex-start;justify-content:space-between;gap:20px;
  padding:26px 20px 26px 24px;text-align:left;background:none;border:0;
  font-size:20px;font-weight:600;line-height:1.6;color:var(--brand-ink);
  transition:color .2s ease;
}
.qa-q:hover{color:var(--brand-ink-700);}
.qa-num{
  display:inline-block;min-width:34px;font-size:14px;font-weight:600;
  color:var(--accent-dawn);letter-spacing:.04em;padding-top:5px;
}
.qa-q-text{flex:1;}
.qa-icon{
  flex:0 0 auto;width:32px;height:32px;border-radius:50%;border:1px solid var(--brand-mist);
  display:grid;place-items:center;color:var(--brand-ink);
  transition:transform .28s ease,background .24s ease,border-color .24s ease,color .24s ease;
  margin-top:2px;
}
.qa-icon svg{width:14px;height:14px;stroke:currentColor;stroke-width:2;stroke-linecap:round;}
.qa-item.is-open .qa-icon{transform:rotate(45deg);background:var(--accent-dawn);border-color:var(--accent-dawn);color:#fff;}
.qa-a{max-height:0;overflow:hidden;transition:max-height .28s ease;}
.qa-a-inner{padding:0 20px 30px 24px;max-width:880px;}
.qa-a-inner p{color:var(--text);font-size:16px;line-height:1.95;}
.qa-points{margin-top:16px;display:grid;gap:10px;}
.qa-points li{
  position:relative;padding-left:22px;font-size:15px;line-height:1.85;color:var(--text-muted);
}
.qa-points li::before{
  content:"";position:absolute;left:0;top:12px;width:8px;height:8px;border-radius:2px;
  background:var(--brand-mist);border:1px solid var(--brand-ink);
}

/* ============ 配图区 ============ */
.gallery{
  display:grid;grid-template-columns:repeat(2,1fr);gap:28px;
}
.gallery-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);overflow:hidden;
  transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;
}
.gallery-card:hover{transform:translateY(-2px);border-color:var(--brand-mist);box-shadow:var(--sh-2);}
.gallery-figure{overflow:hidden;aspect-ratio:16/10;background:var(--brand-mist-50);}
.gallery-figure img{width:100%;height:100%;object-fit:cover;transition:transform .32s ease;}
.gallery-card:hover .gallery-figure img{transform:scale(1.03);}
.gallery-body{padding:22px 24px 26px;}
.gallery-body h3{font-size:19px;font-weight:700;color:var(--brand-ink);line-height:1.5;}
.gallery-body p{margin-top:10px;font-size:15px;color:var(--text-muted);line-height:1.85;}

/* ============ 交叉链接 ============ */
.cross-link{
  display:grid;grid-template-columns:1fr auto;align-items:center;gap:24px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:30px 34px;box-shadow:var(--sh-1);
  transition:border-color .24s ease,box-shadow .24s ease,transform .24s ease;
}
.cross-link:hover{border-color:var(--brand-mist);box-shadow:var(--sh-2);transform:translateY(-2px);}
.cross-link h3{font-size:20px;font-weight:700;color:var(--brand-ink);line-height:1.5;}
.cross-link p{margin-top:8px;font-size:15px;color:var(--text-muted);}

/* ============ CTA 收口 ============ */
.cta-band{
  background:var(--brand-ink);color:var(--text-invert);
  border-radius:20px;padding:56px 48px;position:relative;overflow:hidden;
  box-shadow:var(--sh-3);
}
.cta-band::after{
  content:"";position:absolute;right:-120px;bottom:-160px;width:380px;height:380px;border-radius:50%;
  background:radial-gradient(circle,rgba(224,112,58,.28),rgba(224,112,58,0) 66%);pointer-events:none;
}
.cta-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.05fr 1fr;gap:48px;align-items:start;}
.cta-band h2{font-size:32px;line-height:1.32;font-weight:700;color:#fff;letter-spacing:-.4px;}
.cta-band .cta-desc{margin-top:16px;font-size:16px;line-height:1.9;color:rgba(244,241,234,.82);}
.cta-points{margin-top:22px;display:grid;gap:10px;}
.cta-points li{position:relative;padding-left:20px;font-size:15px;color:rgba(244,241,234,.86);}
.cta-points li::before{content:"";position:absolute;left:0;top:11px;width:7px;height:7px;border-radius:50%;background:var(--accent-dawn);}

.form-card{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);border-radius:var(--r-card);padding:28px;}
.field{margin-bottom:18px;}
.field label{display:block;font-size:14px;color:rgba(244,241,234,.80);margin-bottom:8px;}
.field input{
  width:100%;height:48px;padding:0 14px;border-radius:var(--r-btn);
  border:1px solid rgba(255,255,255,.20);background:rgba(255,255,255,.96);
  color:var(--text);font-size:15px;outline:0;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field input::placeholder{color:#9AA8A3;}
.field input:focus{border-color:var(--accent-dawn);box-shadow:0 0 0 3px rgba(224,112,58,.20);}
.field.has-error input{border-color:#D9532F;box-shadow:0 0 0 3px rgba(217,83,47,.16);}
.field-hint{margin-top:6px;font-size:13px;color:rgba(244,241,234,.62);}
.field.has-error .field-hint{color:#F2A188;}
.form-note{margin-top:14px;font-size:13px;color:rgba(244,241,234,.62);line-height:1.7;}
.form-success{
  margin-top:16px;display:none;padding:14px 16px;border-radius:var(--r-btn);
  background:rgba(203,221,214,.20);border:1px solid rgba(203,221,214,.42);
  color:#EAF3EF;font-size:14px;line-height:1.7;
}
.form-success.is-visible{display:block;}

/* ============ 页脚 ============ */
.site-footer{background:var(--brand-ink);color:var(--text-invert);padding:64px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:0;}
.footer-col{padding:0 28px;border-left:1px solid rgba(255,255,255,.12);}
.footer-col:first-child{border-left:0;padding-left:0;}
.footer-col:last-child{padding-right:0;}
.footer-brand{display:inline-flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .logo-mark{background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.16);}
.footer-brand .logo-text{color:#fff;font-size:16px;font-weight:700;}
.footer-about{font-size:14px;line-height:1.9;color:rgba(244,241,234,.72);max-width:340px;}
.footer-title{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px;}
.footer-links li{margin-bottom:10px;}
.footer-links a{font-size:14px;color:rgba(244,241,234,.74);}
.footer-links a:hover{color:#fff;}
.footer-contact li{font-size:14px;color:rgba(244,241,234,.74);line-height:1.85;margin-bottom:10px;}
.footer-contact strong{color:#fff;font-weight:600;}
.footer-bottom{
  margin-top:44px;padding:22px 0 28px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:13px;color:rgba(244,241,234,.62);
}
.footer-bottom a{color:rgba(244,241,234,.72);}
.footer-bottom a:hover{color:#fff;}

/* ============ 响应式 ============ */
@media (max-width:1439px){
  .container{max-width:1080px;}
}
@media (max-width:1023px){
  .container{max-width:960px;padding:0 24px;}
  .nav-links,.search-box{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-actions .btn-primary{display:none;}
  .page-banner h1{font-size:34px;}
  .section{padding:76px 0;}
  .section--tight{padding:56px 0;}
  .cta-grid{grid-template-columns:1fr;gap:34px;}
  .cta-band{padding:44px 32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px 0;}
  .footer-col{padding:0 24px;}
  .footer-col:nth-child(odd){border-left:0;padding-left:0;}
}
@media (max-width:767px){
  body{font-size:16px;line-height:1.85;}
  .container{padding:0 18px;max-width:100%;}
  .nav-inner{height:64px;}
  .site-header.is-stuck .nav-inner{height:58px;}
  .logo-text{font-size:15px;}
  .section{padding:56px 0;}
  .section--tight{padding:44px 0;}
  .section-head{margin-bottom:30px;}
  .section-head h2{font-size:26px;}
  .page-banner{padding:36px 0 34px;}
  .page-banner h1{font-size:27px;letter-spacing:-.3px;}
  .page-banner .banner-sub{font-size:15px;}
  .qa-q{font-size:17px;padding:20px 16px 20px 20px;gap:12px;}
  .qa-num{min-width:28px;font-size:13px;}
  .qa-a-inner{padding:0 16px 24px 20px;}
  .gallery{grid-template-columns:1fr;gap:18px;}
  .cross-link{grid-template-columns:1fr;padding:24px 22px;gap:16px;}
  .cta-band{padding:34px 22px;border-radius:16px;}
  .cta-band h2{font-size:24px;}
  .form-card{padding:22px 18px;}
  .footer-grid{grid-template-columns:1fr;gap:0;}
  .footer-col{padding:22px 0;border-left:0;border-top:1px solid rgba(255,255,255,.12);}
  .footer-col:first-child{border-top:0;padding-top:0;}
  .footer-col:last-child{padding-bottom:0;}
  .footer-about{max-width:100%;}
  .footer-bottom{flex-direction:column;gap:8px;}
}
@media (max-width:520px){
  .page-banner h1{font-size:24px;}
  .banner-meta .pill{font-size:12px;padding:5px 11px;}
  .btn{width:100%;}
  .btn-sm{width:100%;}
  .filter-bar{padding-bottom:6px;}
  .chip{min-height:44px;}
}