/* roulang page: index */
:root{
  --brand:#2F5D57;
  --brand-deep:#1F403C;
  --brand-soft:#E7EFEC;
  --accent:#C1663F;
  --paper:#F7F5F1;
  --tint:#EDE8DF;
  --surface:#FFFFFF;
  --ink:#14171A;
  --ink-2:#3D444B;
  --muted:#6E747C;
  --line:#E4DFD6;
  --radius-card:10px;
  --radius-btn:6px;
  --shadow-1:0 1px 2px rgba(20,23,26,.05),0 8px 24px -16px rgba(20,23,26,.18);
  --shadow-2:0 2px 6px rgba(20,23,26,.06),0 16px 32px -20px rgba(20,23,26,.24);
  --ease:cubic-bezier(.2,.7,.2,1);
  --header-h:72px;
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC","STSong",serif;
  --font-sans:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::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(--ink-2);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-family:var(--font-serif);color:var(--ink);font-weight:600;line-height:1.28;letter-spacing:.01em}
p{margin:0}
::selection{background:var(--brand-soft);color:var(--brand-deep)}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 40px}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  border-bottom:1px solid transparent;
  transition:background .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(247,245,241,.92);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom-color:var(--line);
  box-shadow:var(--shadow-1);
}
.nav-inner{height:var(--header-h);display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:34px;height:34px;border-radius:8px;background:var(--brand);color:#fff;
  display:grid;place-items:center;font-family:var(--font-serif);font-size:17px;font-weight:700;
  transition:background .22s var(--ease);
}
.brand:hover .brand-mark{background:var(--brand-deep)}
.brand-text{font-family:var(--font-serif);font-size:19px;font-weight:600;color:var(--ink);letter-spacing:.02em;white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:auto}
.nav-links a{
  position:relative;padding:8px 0;font-size:15px;color:var(--ink-2);
  transition:color .2s var(--ease);
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:2px;height:1px;background:var(--brand);
  transform:scaleX(0);transform-origin:left;transition:transform .24s var(--ease);
}
.nav-links a:hover{color:var(--brand)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.active{color:var(--brand);font-weight:600}
.nav-links a.active::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;white-space:nowrap;
  transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease),transform .22s var(--ease);
}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-deep);box-shadow:var(--shadow-2);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{border-color:var(--line);color:var(--ink);background:transparent}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-soft)}
.btn-block{width:100%}
.nav-cta{min-height:40px;padding:0 18px;font-size:14px}

.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--radius-btn);
  border:1px solid var(--line);background:rgba(255,255,255,.6);
  align-items:center;justify-content:center;flex-direction:column;gap:4px;
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.nav-toggle:hover{border-color:var(--brand);background:#fff}
.nav-toggle span{display:block;width:18px;height:1.5px;background:var(--ink);border-radius:2px}

/* ---------- 抽屉 ---------- */
.drawer{position:fixed;inset:0;z-index:90;visibility:hidden;opacity:0;transition:opacity .24s var(--ease),visibility .24s var(--ease)}
.drawer.is-open{visibility:visible;opacity:1}
.drawer-scrim{position:absolute;inset:0;background:rgba(20,23,26,.5)}
.drawer-panel{
  position:absolute;top:0;right:0;bottom:0;width:84%;max-width:340px;
  background:var(--paper);padding:20px 22px 32px;overflow-y:auto;
  transform:translateX(100%);transition:transform .3s var(--ease);
  display:flex;flex-direction:column;gap:24px;
}
.drawer.is-open .drawer-panel{transform:none}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-bottom:18px;border-bottom:1px solid var(--line)}
.drawer-close{
  width:40px;height:40px;border-radius:999px;border:1px solid var(--line);
  display:grid;place-items:center;font-size:20px;line-height:1;color:var(--ink-2);
  transition:border-color .2s var(--ease),color .2s var(--ease);
}
.drawer-close:hover{border-color:var(--brand);color:var(--brand)}
.drawer-nav{display:flex;flex-direction:column}
.drawer-nav a{
  padding:14px 2px;font-size:16px;color:var(--ink-2);border-bottom:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;
  transition:color .2s var(--ease),padding-left .2s var(--ease);
}
.drawer-nav a::after{content:"→";color:var(--muted);font-size:15px}
.drawer-nav a:hover{color:var(--brand);padding-left:6px}
.drawer-nav a.active{color:var(--brand);font-weight:700}

/* ---------- 首屏 ---------- */
.hero{position:relative;overflow:hidden;padding:calc(var(--header-h) + 78px) 0 96px}
.hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  opacity:.24;filter:saturate(.75);
}
.hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(247,245,241,.55) 0%,rgba(247,245,241,.9) 58%,var(--paper) 100%);
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.05fr .85fr;gap:56px;align-items:center}
.eyebrow{
  display:inline-block;font-size:13px;font-weight:600;letter-spacing:.16em;
  color:var(--accent);margin-bottom:16px;
}
.hero h1{
  font-size:clamp(30px,3.8vw,50px);
  line-height:1.18;letter-spacing:.01em;margin-bottom:20px;
}
.hero-lead{font-size:17px;color:var(--ink-2);max-width:520px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-facts{
  display:flex;flex-wrap:wrap;margin-top:34px;
  font-size:13px;color:var(--muted);letter-spacing:.03em;
}
.hero-facts li{padding:0 16px;margin-bottom:8px;border-right:1px solid var(--line)}
.hero-facts li:first-child{padding-left:0}
.hero-facts li:last-child{border-right:0;padding-right:0}
.hero-media{
  margin:0;position:relative;border-radius:var(--radius-card);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow-2);aspect-ratio:4/3;background:var(--tint);
}
.hero-media img{width:100%;height:100%;object-fit:cover}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0}
.section-tint{background:var(--tint)}
.section-head{max-width:720px;margin-bottom:48px}
.section-head h2{font-size:clamp(24px,2.8vw,34px);margin-bottom:16px}
.section-head .lead{font-size:16px;color:var(--muted);max-width:640px}
.section-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;max-width:none}
.section-head-row>div{max-width:640px}
.text-link{
  display:inline-block;color:var(--brand);font-size:15px;font-weight:600;
  border-bottom:1px solid rgba(47,93,87,.32);padding-bottom:2px;
  transition:border-color .2s var(--ease),color .2s var(--ease);
}
.text-link:hover{border-bottom-color:var(--brand);color:var(--brand-deep)}
.tag{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand);font-size:12px;font-weight:600;letter-spacing:.04em;
}

/* ---------- 痛点 ---------- */
.pain-list{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line)}
.pain-item{padding:30px 24px 8px;border-left:1px solid var(--line)}
.pain-item:first-child{border-left:0;padding-left:0}
.pain-num{
  display:block;font-family:var(--font-serif);font-size:14px;font-weight:700;
  color:var(--accent);letter-spacing:.12em;margin-bottom:14px;
  font-feature-settings:"tnum";
}
.pain-item h3{font-size:19px;margin-bottom:10px}
.pain-item p{font-size:15px;color:var(--muted);line-height:1.8}

/* ---------- 入口卡片 ---------- */
.card-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:28px}
.card{
  grid-column:span 6;display:flex;flex-direction:column;overflow:hidden;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);
  transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.card:hover{transform:translateY(-2px);border-color:var(--brand);box-shadow:var(--shadow-2)}
.card-media{margin:0;overflow:hidden;aspect-ratio:16/10;background:var(--tint)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.card:hover .card-media img{transform:scale(1.03)}
.card-body{padding:26px 26px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-num{font-family:var(--font-serif);font-size:13px;font-weight:700;color:var(--accent);letter-spacing:.14em;font-feature-settings:"tnum"}
.card h3{font-size:21px}
.card p{font-size:15px;color:var(--muted);line-height:1.8;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-foot{margin-top:auto;padding-top:14px;display:flex;justify-content:flex-end}
.card-arrow{color:var(--brand);font-size:18px;transition:transform .24s var(--ease)}
.card:hover .card-arrow{transform:translateX(4px)}
.card-wide{grid-column:span 12;flex-direction:row;align-items:stretch}
.card-wide .card-media{width:38%;aspect-ratio:auto;flex:0 0 38%}
.card-wide .card-body{justify-content:center;padding:32px 34px}
.card-wide p{-webkit-line-clamp:3}

/* ---------- 步骤 ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:32px}
.step{border-top:1px solid var(--line);padding-top:24px}
.step-num{
  display:block;font-family:var(--font-serif);font-size:14px;font-weight:700;
  color:var(--accent);letter-spacing:.14em;margin-bottom:12px;font-feature-settings:"tnum";
}
.step h3{font-size:20px;margin-bottom:10px}
.step p{font-size:15px;color:var(--muted);line-height:1.8}

/* ---------- 数据 ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);padding-top:36px}
.stat{padding-right:24px;border-left:1px solid rgba(228,223,214,.9);padding-left:24px}
.stat:first-child{border-left:0;padding-left:0}
.stat-num{
  font-family:var(--font-serif);font-size:clamp(34px,4vw,48px);font-weight:700;
  color:var(--brand-deep);line-height:1.1;margin-bottom:12px;
  font-feature-settings:"tnum";letter-spacing:.01em;
}
.stat-num span{font-size:14px;font-weight:600;color:var(--muted);margin-left:6px;letter-spacing:.04em;font-family:var(--font-sans)}
.stat-label{font-size:15px;font-weight:600;color:var(--ink);margin-bottom:6px}
.stat-desc{font-size:14px;color:var(--muted);line-height:1.75}
.stats-note{margin-top:36px;padding-top:20px;border-top:1px solid rgba(228,223,214,.9);font-size:14px;color:var(--muted)}

/* ---------- 最新信息 ---------- */
.news-list{border-top:1px solid var(--line)}
.news-item{border-bottom:1px solid var(--line)}
.news-link{
  display:grid;grid-template-columns:168px 1fr 32px;gap:26px;align-items:center;
  padding:22px 0;transition:padding-left .24s var(--ease);
}
.news-link:hover{padding-left:8px}
.news-thumb{margin:0;overflow:hidden;border-radius:8px;aspect-ratio:16/10;background:#e3ded4;border:1px solid var(--line)}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.news-link:hover .news-thumb img{transform:scale(1.04)}
.news-body{display:flex;flex-direction:column;gap:8px;min-width:0}
.news-body h3{font-size:19px;transition:color .2s var(--ease)}
.news-link:hover .news-body h3{color:var(--brand)}
.news-body p{font-size:15px;color:var(--muted);line-height:1.8;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-date{font-size:13px;color:var(--muted);letter-spacing:.05em;font-feature-settings:"tnum"}
.news-arrow{color:var(--brand);font-size:18px;justify-self:end;transition:transform .24s var(--ease)}
.news-link:hover .news-arrow{transform:translateX(4px)}
.empty-state{
  border:1px dashed var(--line);border-radius:var(--radius-card);
  background:rgba(255,255,255,.6);padding:52px 24px;text-align:center;
}
.empty-state p{font-size:16px;color:var(--ink-2);margin-bottom:14px}

/* ---------- FAQ ---------- */
.faq{border-top:1px solid var(--line);max-width:900px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  min-height:44px;padding:22px 0;cursor:pointer;list-style:none;
  font-family:var(--font-serif);font-size:18px;font-weight:600;color:var(--ink);
  transition:color .2s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--brand)}
.faq-icon{
  flex:0 0 auto;width:32px;height:32px;border-radius:999px;border:1px solid var(--line);
  display:grid;place-items:center;color:var(--brand);font-size:18px;line-height:1;
  font-family:var(--font-sans);font-weight:400;
  transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
}
.faq-icon::before{content:"+"}
.faq-item[open] .faq-icon{background:var(--brand);border-color:var(--brand);color:#fff}
.faq-item[open] .faq-icon::before{content:"−"}
.faq-answer{padding:0 0 24px;max-width:780px;font-size:16px;color:var(--ink-2);line-height:1.9}

/* ---------- 表单 CTA ---------- */
.cta-grid{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:start}
.cta-copy h2{font-size:clamp(24px,2.8vw,34px);margin-bottom:18px}
.cta-copy .lead{font-size:16px;color:var(--muted);margin-bottom:26px;max-width:460px}
.cta-points{display:flex;flex-direction:column;gap:12px}
.cta-points li{position:relative;padding-left:22px;font-size:15px;color:var(--ink-2)}
.cta-points li::before{
  content:"";position:absolute;left:0;top:12px;width:8px;height:8px;
  background:var(--brand-soft);border:1px solid var(--brand);border-radius:2px;
}
.form-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:32px;box-shadow:var(--shadow-1);
}
.form-card h3{font-size:20px;margin-bottom:8px}
.form-card .form-sub{font-size:14px;color:var(--muted);margin-bottom:24px}
.field{margin-bottom:18px}
.field label{display:block;font-size:14px;font-weight:600;color:var(--ink);margin-bottom:8px}
.field .req{color:var(--accent);margin-left:2px}
.field input,.field textarea{
  width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:6px;
  background:var(--paper);color:var(--ink);font-family:inherit;font-size:15px;line-height:1.6;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
}
.field textarea{resize:vertical;min-height:104px}
.field input::placeholder,.field textarea::placeholder{color:#9aa0a6}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);background:#fff;
  box-shadow:0 0 0 3px rgba(47,93,87,.12);
}
.form-note{font-size:13px;color:var(--muted);line-height:1.75;margin-top:16px}
.form-note a{color:var(--brand);border-bottom:1px solid rgba(47,93,87,.3)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-deep);color:rgba(255,255,255,.72);padding:72px 0 0;margin-top:0}
.footer-top{display:grid;grid-template-columns:1.1fr 1.6fr;gap:56px;padding-bottom:48px}
.footer-brand .brand-mark{background:rgba(255,255,255,.14)}
.footer-brand .brand-text{color:#fff}
.footer-brand p{margin-top:16px;font-size:14px;color:rgba(255,255,255,.62);max-width:280px;line-height:1.8}
.footer-cols{display:grid;grid-template-columns:repeat(3,1fr);gap:32px}
.footer-col h4{font-family:var(--font-sans);font-size:13px;font-weight:700;letter-spacing:.14em;color:rgba(255,255,255,.55);margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a,.footer-col span{font-size:14px;color:rgba(255,255,255,.78);transition:color .2s var(--ease)}
.footer-col a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14);padding-top:22px;padding-bottom:28px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:rgba(255,255,255,.55);
}
.footer-bottom a{color:rgba(255,255,255,.7);margin-left:12px;transition:color .2s var(--ease)}
.footer-bottom a:hover{color:#fff}
.footer-bottom .sep{margin-left:12px;color:rgba(255,255,255,.3)}

/* ---------- 移动底部 Tab ---------- */
.tabbar{display:none}
@media (max-width:767px){
  body{padding-bottom:calc(62px + env(safe-area-inset-bottom))}
  .tabbar{
    display:flex;position:fixed;left:0;right:0;bottom:0;z-index:70;
    background:rgba(247,245,241,.97);
    -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
    border-top:1px solid var(--line);
    padding-bottom:env(safe-area-inset-bottom);
    overflow-x:auto;scrollbar-width:none;-webkit-overflow-scrolling:touch;
  }
  .tabbar::-webkit-scrollbar{display:none}
  .tabbar a{
    position:relative;flex:0 0 auto;min-width:64px;min-height:44px;
    padding:8px 10px 9px;display:flex;flex-direction:column;align-items:center;gap:3px;
    font-size:11px;color:var(--muted);white-space:nowrap;
    transition:color .2s var(--ease);
  }
  .tabbar svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
  .tabbar a.active{color:var(--brand);font-weight:700}
  .tabbar a.active::before{
    content:"";position:absolute;top:0;left:12px;right:12px;height:2px;
    background:var(--brand);border-radius:2px;
  }
}

/* ---------- 滚动淡入 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.is-visible{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1100px){
  .nav-links{display:none}
  .nav-toggle{display:inline-flex}
  .nav-cta{display:none}
}
@media (max-width:991px){
  .container{padding:0 24px}
  .hero{padding:calc(var(--header-h) + 56px) 0 72px}
  .hero-inner{grid-template-columns:1fr;gap:40px}
  .hero-media{aspect-ratio:16/10}
  .section{padding:72px 0}
  .pain-list{grid-template-columns:repeat(2,1fr);border-top:1px solid var(--line)}
  .pain-item{padding:26px 20px 6px}
  .pain-item:nth-child(3){border-left:0;padding-left:0}
  .card{grid-column:span 12}
  .card-wide{flex-direction:column}
  .card-wide .card-media{width:100%;flex:none;aspect-ratio:16/9}
  .card-wide .card-body{padding:24px 26px}
  .steps{grid-template-columns:1fr;gap:24px}
  .stats{grid-template-columns:repeat(2,1fr);gap:32px 0}
  .stat:nth-child(3){border-left:0;padding-left:0}
  .cta-grid{grid-template-columns:1fr;gap:36px}
  .footer-top{grid-template-columns:1fr;gap:40px}
  .footer-cols{grid-template-columns:repeat(2,1fr);gap:28px}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .brand-text{font-size:17px}
  .hero h1{font-size:31px}
  .hero-lead{font-size:16px}
  .hero-actions .btn{flex:1 1 auto}
  .hero-facts{gap:10px 0;font-size:12px}
  .hero-facts li{padding:0 12px}
  .section{padding:56px 0}
  .section-head{margin-bottom:32px}
  .section-head-row{flex-direction:column;align-items:flex-start;gap:14px}
  .pain-list{grid-template-columns:1fr}
  .pain-item{border-left:0;padding:24px 0 4px;border-bottom:1px solid var(--line)}
  .pain-item:last-child{border-bottom:0}
  .news-link{grid-template-columns:104px 1fr;gap:16px;padding:18px 0}
  .news-arrow{display:none}
  .news-body h3{font-size:17px}
  .news-body p{-webkit-line-clamp:2;font-size:14px}
  .stats{grid-template-columns:1fr;gap:0}
  .stat{border-left:0;padding:24px 0;border-bottom:1px solid rgba(228,223,214,.9)}
  .stat:last-child{border-bottom:0}
  .form-card{padding:24px 20px}
  .faq-item summary{font-size:16.5px;padding:18px 0;gap:16px}
  .footer-cols{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px}
  .footer-bottom a{margin-left:0;margin-right:12px}
  .footer-bottom .sep{display:none}
  .site-footer{padding-top:52px}
}
@media (max-width:480px){
  .hero h1{font-size:27px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .news-link{grid-template-columns:88px 1fr}
  .stat-num{font-size:34px}
}
@media (prefers-reduced-motion: reduce){
  *{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}

/* roulang page: article */
:root{
  --brand:#2F5D57;
  --brand-deep:#1F403C;
  --brand-soft:#E7EFEC;
  --accent:#C1663F;
  --paper:#F7F5F1;
  --tint:#EDE8DF;
  --surface:#FFFFFF;
  --ink:#14171A;
  --ink-2:#3D444B;
  --muted:#6E747C;
  --line:#E4DFD6;
  --radius:10px;
  --radius-sm:6px;
  --shadow:0 1px 2px rgba(20,23,26,.05), 0 8px 24px -16px rgba(20,23,26,.18);
  --shadow-hover:0 2px 6px rgba(20,23,26,.06), 0 16px 32px -20px rgba(20,23,26,.24);
  --ease:cubic-bezier(.2,.7,.2,1);
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,serif;
  --sans:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.85;
  color:var(--ink-2);
  background:var(--paper);
  padding-bottom:calc(60px + env(safe-area-inset-bottom));
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
a{color:var(--brand);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--brand-deep)}
img{max-width:100%;display:block}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit}
input,textarea,select{font-family:inherit;font-size:16px;color:var(--ink)}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 40px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,245,241,.86);
  border-bottom:1px solid transparent;
  transition:background .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
  backdrop-filter:saturate(140%) blur(6px);
}
.site-header.is-scrolled{
  border-bottom-color:var(--line);
  background:rgba(247,245,241,.94);
  box-shadow:0 1px 0 rgba(20,23,26,.02);
}
.header-inner{height:72px;display:flex;align-items:center;gap:28px}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);flex:0 0 auto}
.brand:hover{color:var(--ink)}
.brand-mark{
  width:32px;height:32px;display:grid;place-items:center;
  background:var(--brand);color:#fff;border-radius:8px;
  font-family:var(--serif);font-size:17px;line-height:1;font-weight:700;
}
.brand-text{font-family:var(--serif);font-size:19px;font-weight:600;letter-spacing:.01em;white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto;flex-wrap:wrap}
.nav-links a{
  display:inline-flex;align-items:center;height:38px;padding:0 13px;
  border-radius:var(--radius-sm);color:var(--ink-2);font-size:15px;
  transition:background .2s var(--ease),color .2s var(--ease);
}
.nav-links a:hover{background:var(--brand-soft);color:var(--brand-deep)}
.nav-links a.active{color:var(--brand);background:var(--brand-soft);font-weight:600}
.header-cta{
  display:inline-flex;align-items:center;justify-content:center;
  height:40px;padding:0 18px;border-radius:var(--radius-sm);
  background:var(--brand);color:#fff;font-size:15px;font-weight:600;
  transition:background .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
  white-space:nowrap;
}
.header-cta:hover{background:var(--brand-deep);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow)}
.nav-toggle{
  display:none;width:44px;height:44px;margin-left:auto;
  align-items:center;justify-content:center;border:1px solid var(--line);
  border-radius:var(--radius-sm);background:var(--surface);color:var(--ink);
}
.nav-toggle span{display:block;position:relative;width:18px;height:2px;background:currentColor}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;transition:transform .2s var(--ease)
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.mobile-drawer{
  display:none;position:fixed;inset:72px 0 0;z-index:55;
  background:var(--paper);padding:24px 18px 40px;overflow-y:auto;
}
.mobile-drawer.open{display:block}
.mobile-drawer a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:54px;padding:0 4px;border-bottom:1px solid var(--line);
  font-size:17px;color:var(--ink);
}
.mobile-drawer a::after{content:"›";color:var(--muted);font-size:20px}
.mobile-drawer .drawer-cta{
  margin-top:22px;display:flex;align-items:center;justify-content:center;
  height:48px;border-radius:var(--radius-sm);background:var(--brand);color:#fff;font-weight:600;
  border-bottom:0;
}
.mobile-drawer .drawer-cta::after{display:none}

/* ---------- page head ---------- */
.article-head{padding:40px 0 0}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);letter-spacing:.02em}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--brand)}
.crumbs .sep{color:#C9C3B8}
.crumbs .now{color:var(--ink-2);max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.head-inner{max-width:820px}
.cat-tag{
  display:inline-flex;align-items:center;gap:6px;margin:22px 0 16px;
  height:28px;padding:0 13px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand-deep);
  font-size:13px;letter-spacing:.04em;
}
.cat-tag::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent)}
h1.article-title{
  font-family:var(--serif);font-weight:700;color:var(--ink);
  font-size:clamp(30px,4.2vw,48px);line-height:1.2;letter-spacing:.01em;
  margin-bottom:22px;
}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;
  padding:16px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  font-size:14px;color:var(--muted);
}
.meta-row .meta-item{display:inline-flex;align-items:center;gap:8px}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:#C9C3B8}
.meta-row strong{color:var(--ink-2);font-weight:600}

/* ---------- layout ---------- */
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 296px;
  gap:56px;align-items:start;padding:48px 0 8px;
}
.article-main{min-width:0;max-width:820px}
.article-cover{
  width:100%;aspect-ratio:16/10;overflow:hidden;border-radius:var(--radius);
  border:1px solid var(--line);margin-bottom:36px;background:var(--tint);
}
.article-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.article-cover:hover img{transform:scale(1.03)}

/* ---------- article body ---------- */
.article-body{
  max-width:740px;font-size:17px;line-height:1.9;color:var(--ink-2);
  font-family:var(--sans);
}
.article-body>*:first-child{margin-top:0}
.article-body p{margin:0 0 1.2em}
.article-body h2{
  font-family:var(--serif);font-size:clamp(23px,2.6vw,29px);font-weight:700;color:var(--ink);
  line-height:1.35;margin:44px 0 18px;padding-left:14px;border-left:3px solid var(--brand);
}
.article-body h3{
  font-size:20px;font-weight:700;color:var(--ink);line-height:1.45;margin:32px 0 12px;
}
.article-body h4{font-size:17px;font-weight:700;color:var(--ink);margin:24px 0 10px}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding:0}
.article-body li{position:relative;padding-left:22px;margin-bottom:10px}
.article-body li::before{
  content:"";position:absolute;left:0;top:.82em;width:8px;height:2px;background:var(--brand);
}
.article-body a{color:var(--brand);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
.article-body a:hover{color:var(--brand-deep);text-underline-offset:5px}
.article-body strong{color:var(--ink);font-weight:700}
.article-body img{border-radius:8px;margin:24px 0;width:100%;height:auto}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:13px;color:var(--muted);margin-top:10px;text-align:center}
.article-body blockquote{
  margin:26px 0;padding:18px 24px;border-left:3px solid var(--brand);
  background:var(--tint);border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  color:var(--ink-2);font-weight:500;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body table{width:100%;border-collapse:collapse;margin:26px 0;font-size:15px;line-height:1.7}
.article-body th,.article-body td{border:1px solid var(--line);padding:11px 14px;text-align:left;vertical-align:top}
.article-body th{background:var(--tint);color:var(--ink);font-weight:600}
.article-body pre{
  background:var(--ink);color:#EDE8DF;padding:18px 20px;border-radius:8px;
  overflow-x:auto;font-size:14px;line-height:1.7;margin:24px 0;
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
.article-body code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.92em}
.article-body pre code{background:none;padding:0;color:inherit}
.article-body hr{border:0;border-top:1px solid var(--line);margin:36px 0}

/* ---------- empty state ---------- */
.empty-box{
  max-width:740px;border:1px dashed var(--line);border-radius:var(--radius);
  background:var(--surface);padding:56px 28px;text-align:center;
}
.empty-box h2{font-family:var(--serif);font-size:24px;color:var(--ink);margin-bottom:12px}
.empty-box p{color:var(--muted);margin-bottom:22px}

/* ---------- sidebar ---------- */
.sidebar{position:sticky;top:96px;display:grid;gap:26px}
.side-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:22px;box-shadow:var(--shadow);
}
.side-card h3{
  font-family:var(--serif);font-size:16px;color:var(--ink);font-weight:700;
  padding-bottom:12px;border-bottom:1px solid var(--line);margin-bottom:14px;
}
.side-list li+li{border-top:1px solid var(--line)}
.side-list a{
  display:flex;gap:10px;padding:12px 0;color:var(--ink-2);font-size:14.5px;line-height:1.6;
  transition:color .2s var(--ease),transform .2s var(--ease);
}
.side-list a:hover{color:var(--brand);transform:translateX(2px)}
.side-list .num{color:var(--accent);font-family:var(--serif);font-size:13px;line-height:1.8;flex:0 0 auto}
.side-note{font-size:13.5px;color:var(--muted);line-height:1.8;margin-bottom:16px}
.side-btn{
  display:flex;align-items:center;justify-content:center;height:42px;
  border-radius:var(--radius-sm);background:var(--brand);color:#fff;font-weight:600;font-size:15px;
  transition:background .2s var(--ease),transform .2s var(--ease);
}
.side-btn:hover{background:var(--brand-deep);color:#fff;transform:translateY(-1px)}

/* ---------- tags ---------- */
.tag-block{margin:44px 0 0;padding-top:26px;border-top:1px solid var(--line)}
.tag-block h2{font-size:13px;letter-spacing:.14em;color:var(--muted);font-weight:600;margin-bottom:14px}
.tag-list{display:flex;flex-wrap:wrap;gap:10px}
.tag-list a,.tag-list span{
  display:inline-flex;align-items:center;height:32px;padding:0 14px;
  border:1px solid var(--line);border-radius:999px;background:var(--surface);
  font-size:13.5px;color:var(--ink-2);transition:border-color .2s var(--ease),color .2s var(--ease),background .2s var(--ease);
}
.tag-list a:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-soft)}

/* ---------- related ---------- */
.related{padding:64px 0 0}
.section-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin-bottom:22px}
.section-head h2{font-family:var(--serif);font-size:clamp(22px,2.4vw,28px);color:var(--ink);font-weight:700}
.section-head .more{font-size:14px;color:var(--muted)}
.section-head .more:hover{color:var(--brand)}
.rel-list{display:grid;gap:0;border-top:1px solid var(--line)}
.rel-item{
  display:grid;grid-template-columns:180px minmax(0,1fr) 32px;gap:24px;align-items:center;
  padding:24px 0;border-bottom:1px solid var(--line);
  transition:background .25s var(--ease);
}
.rel-item:hover{background:rgba(231,239,236,.45)}
.rel-thumb{aspect-ratio:16/10;overflow:hidden;border-radius:var(--radius-sm);background:var(--tint);border:1px solid var(--line)}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.rel-item:hover .rel-thumb img{transform:scale(1.03)}
.rel-body h3{font-family:var(--serif);font-size:19px;line-height:1.45;color:var(--ink);margin-bottom:8px}
.rel-item:hover .rel-body h3{color:var(--brand)}
.rel-body p{
  font-size:14.5px;color:var(--muted);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.rel-meta{display:flex;gap:10px;margin-top:10px;font-size:12.5px;color:var(--muted);letter-spacing:.03em}
.rel-arrow{
  width:32px;height:32px;border:1px solid var(--line);border-radius:50%;
  display:grid;place-items:center;color:var(--brand);font-size:14px;
  transition:background .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.rel-item:hover .rel-arrow{background:var(--brand);border-color:var(--brand);color:#fff;transform:translateX(2px)}

/* ---------- cta ---------- */
.cta-band{padding:72px 0 0}
.cta-inner{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:26px;
  background:var(--brand-deep);border-radius:var(--radius);padding:44px 46px;color:#E7EFEC;
  position:relative;overflow:hidden;
}
.cta-inner::after{
  content:"";position:absolute;right:-60px;top:-60px;width:220px;height:220px;
  border:1px solid rgba(231,239,236,.22);border-radius:50%;
}
.cta-inner h2{font-family:var(--serif);font-size:clamp(22px,2.6vw,30px);color:#fff;line-height:1.35;margin-bottom:10px}
.cta-inner p{font-size:15px;color:rgba(231,239,236,.82);max-width:520px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;position:relative;z-index:1}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 24px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:#3A6E67;color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.btn-ghost{background:transparent;color:#fff;border:1px solid rgba(231,239,236,.5)}
.btn-ghost:hover{background:rgba(231,239,236,.14);color:#fff;border-color:rgba(231,239,236,.8);transform:translateY(-2px)}
.btn-line{background:transparent;color:var(--brand);border:1px solid var(--brand)}
.btn-line:hover{background:var(--brand-soft);color:var(--brand-deep);transform:translateY(-2px)}

/* ---------- footer ---------- */
.site-footer{background:var(--brand-deep);color:rgba(231,239,236,.78);margin-top:96px}
.footer-top{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.7fr);gap:56px;
  padding-top:64px;padding-bottom:48px;
}
.footer-brand .brand-text{color:#fff}
.footer-brand .brand-mark{background:rgba(231,239,236,.14);color:#fff}
.footer-brand p{margin-top:16px;font-size:14px;color:rgba(231,239,236,.65);max-width:260px;line-height:1.8}
.footer-cols{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:32px}
.footer-col h4{
  font-size:13px;letter-spacing:.14em;color:rgba(231,239,236,.55);
  font-weight:600;margin-bottom:16px;
}
.footer-col li{margin-bottom:10px;font-size:14px;line-height:1.7}
.footer-col a{color:rgba(231,239,236,.82)}
.footer-col a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px}
.footer-bottom{
  border-top:1px solid rgba(231,239,236,.16);
  padding-top:22px;padding-bottom:26px;
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:13px;color:rgba(231,239,236,.58);
}
.footer-bottom a{color:rgba(231,239,236,.72)}
.footer-bottom a:hover{color:#fff}
.footer-bottom .sep{margin:0 8px;opacity:.5}

/* ---------- mobile tab ---------- */
.mobile-tab{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:70;
  background:rgba(255,255,255,.97);border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
  backdrop-filter:saturate(140%) blur(8px);
}
.mobile-tab .tab-item{
  flex:1 1 0;min-width:0;height:60px;display:flex;flex-direction:column;
  align-items:center;justify-content:center;gap:3px;
  font-size:11px;color:var(--muted);letter-spacing:.01em;
  position:relative;transition:color .2s var(--ease);
}
.mobile-tab .tab-item svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.mobile-tab .tab-item span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%}
.mobile-tab .tab-item.active{color:var(--brand);font-weight:600}
.mobile-tab .tab-item.active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:26px;height:2px;background:var(--brand);border-radius:2px;
}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .container{padding:0 32px}
  .article-layout{gap:40px;grid-template-columns:minmax(0,1fr) 268px}
  .nav-links a{padding:0 10px;font-size:14.5px}
}
@media (max-width:991px){
  .container{padding:0 24px}
  .nav-links{display:none}
  .header-cta{display:none}
  .nav-toggle{display:flex}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:0}
  .sidebar{position:static;margin-top:48px;grid-template-columns:repeat(2,minmax(0,1fr));display:grid}
  .footer-top{grid-template-columns:minmax(0,1fr);gap:40px}
  .footer-cols{grid-template-columns:repeat(3,minmax(0,1fr))}
  .rel-item{grid-template-columns:150px minmax(0,1fr) 32px;gap:18px}
}
@media (max-width:767px){
  body{padding-bottom:calc(60px + env(safe-area-inset-bottom))}
  .container{padding:0 18px}
  .mobile-tab{display:flex}
  .article-head{padding-top:26px}
  h1.article-title{font-size:clamp(26px,7vw,32px);margin-bottom:18px}
  .article-layout{padding-top:32px}
  .article-cover{margin-bottom:26px}
  .article-body{font-size:16.5px;line-height:1.9}
  .article-body h2{margin-top:34px}
  .sidebar{grid-template-columns:minmax(0,1fr);margin-top:40px}
  .rel-item{grid-template-columns:108px minmax(0,1fr) 24px;gap:14px;padding:18px 0}
  .rel-body h3{font-size:16.5px}
  .rel-body p{font-size:13.5px;-webkit-line-clamp:2}
  .rel-arrow{width:26px;height:26px;font-size:12px}
  .cta-inner{padding:30px 24px}
  .cta-band{padding-top:52px}
  .site-footer{margin-top:64px}
  .footer-top{padding-top:44px;padding-bottom:34px}
  .footer-cols{grid-template-columns:repeat(2,minmax(0,1fr));gap:26px}
  .related{padding-top:48px}
}
@media (max-width:480px){
  .brand-text{font-size:17px}
  .footer-cols{grid-template-columns:minmax(0,1fr)}
  .rel-item{grid-template-columns:minmax(0,1fr);gap:12px}
  .rel-thumb{aspect-ratio:16/9}
  .rel-arrow{display:none}
  .meta-row{gap:8px 14px;font-size:13px}
  .empty-box{padding:40px 20px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
}

/* roulang page: category1 */
:root{
  --brand:#2F5D57;
  --brand-deep:#1F403C;
  --brand-soft:#E7EFEC;
  --accent:#C1663F;
  --paper:#F7F5F1;
  --tint:#EDE8DF;
  --surface:#FFFFFF;
  --ink:#14171A;
  --ink-2:#3D444B;
  --muted:#6E747C;
  --line:#E4DFD6;
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --sans:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  --r-card:10px;
  --r-btn:6px;
  --sh:0 1px 2px rgba(20,23,26,.05),0 8px 24px -16px rgba(20,23,26,.18);
  --sh-hover:0 2px 6px rgba(20,23,26,.06),0 16px 32px -20px rgba(20,23,26,.24);
  --ease:cubic-bezier(.2,.7,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--sans);
  font-size:16.5px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
@media(max-width:767px){
  body{padding-bottom:calc(62px + env(safe-area-inset-bottom))}
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
h1,h2,h3,h4{font-family:var(--serif);font-weight:600;line-height:1.24;letter-spacing:.01em;margin:0}
p{margin:0}
ul,ol{margin:0;padding:0}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:3px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 40px}
@media(max-width:1199px){.container{padding:0 24px}}
@media(max-width:767px){.container{padding:0 18px}}
.section{padding:96px 0}
.section.tight{padding:72px 0}
@media(max-width:991px){.section{padding:72px 0}.section.tight{padding:56px 0}}
@media(max-width:767px){.section{padding:56px 0}.section.tight{padding:44px 0}}
.section--tint{background:var(--tint)}
.section--paper{background:var(--paper)}
.eyebrow{
  font-size:13px;letter-spacing:.14em;color:var(--brand);font-weight:600;
  margin:0 0 14px;display:flex;align-items:center;gap:10px;
}
.eyebrow::after{content:"";width:36px;height:1px;background:var(--brand);opacity:.45}
.section-head{max-width:740px;margin-bottom:48px}
.section-head h2{font-size:clamp(24px,2.6vw,34px)}
.section-head p{margin-top:14px;color:var(--ink-2);font-size:16.5px}
@media(max-width:767px){.section-head{margin-bottom:32px}}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  background:rgba(247,245,241,.82);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
  border-bottom:1px solid transparent;
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease);
}
.site-header.scrolled{
  border-bottom-color:var(--line);
  box-shadow:0 6px 22px -18px rgba(20,23,26,.5);
  background:rgba(247,245,241,.94);
}
.header-inner{height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:inline-flex;align-items:center;gap:10px;min-height:44px}
.brand-mark{
  width:34px;height:34px;border-radius:8px;background:var(--brand);color:#fff;
  display:grid;place-items:center;font-family:var(--serif);font-size:17px;font-weight:600;
  flex:0 0 auto;
}
.brand-text{font-family:var(--serif);font-size:19px;font-weight:600;letter-spacing:.02em;white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:26px}
.nav-links a{
  position:relative;font-size:15px;color:var(--ink-2);padding:8px 0;min-height:44px;
  display:inline-flex;align-items:center;transition:color .18s var(--ease);
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:100%;bottom:6px;height:2px;background:var(--brand);
  border-radius:2px;transition:right .22s var(--ease);
}
.nav-links a:hover{color:var(--brand)}
.nav-links a:hover::after,.nav-links a.active::after{right:0}
.nav-links a.active{color:var(--brand);font-weight:600}
.header-cta{
  display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 20px;
  border-radius:var(--r-btn);background:var(--brand);color:#fff;font-size:14.5px;font-weight:600;
  transition:background .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
  white-space:nowrap;
}
.header-cta:hover{background:var(--brand-deep);transform:translateY(-1px);box-shadow:var(--sh)}
.drawer-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:var(--r-btn);
  align-items:center;justify-content:center;background:var(--surface);color:var(--ink);
}
@media(max-width:1023px){
  .nav-links,.header-cta{display:none}
  .drawer-toggle{display:inline-flex}
}
.drawer{
  position:fixed;inset:0;z-index:90;background:var(--paper);
  display:none;flex-direction:column;padding:14px 18px 24px;
}
.drawer.open{display:flex}
.drawer-head{display:flex;align-items:center;justify-content:space-between;min-height:56px}
.drawer-close{
  width:44px;height:44px;border:1px solid var(--line);border-radius:var(--r-btn);
  display:grid;place-items:center;background:var(--surface);
}
.drawer-nav{display:flex;flex-direction:column;margin-top:20px}
.drawer-nav a{
  display:flex;align-items:center;justify-content:space-between;
  padding:16px 2px;border-bottom:1px solid var(--line);font-size:17px;color:var(--ink);
  min-height:56px;
}
.drawer-nav a.active{color:var(--brand);font-weight:600}
.drawer-nav a span{color:var(--muted);font-size:13px}
.drawer-foot{margin-top:auto;padding-top:24px;font-size:13px;color:var(--muted)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-primary{background:var(--brand);color:#fff;border:1px solid var(--brand)}
.btn-primary:hover{background:var(--brand-deep);border-color:var(--brand-deep);transform:translateY(-1px);box-shadow:var(--sh)}
.btn-ghost{background:transparent;color:var(--ink);border:1px solid var(--line)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-soft)}
.btn-light{background:#fff;color:var(--brand-deep);border:1px solid #fff}
.btn-light:hover{background:var(--brand-soft);border-color:var(--brand-soft);transform:translateY(-1px)}
.btn-outline-light{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.42)}
.btn-outline-light:hover{border-color:#fff;background:rgba(255,255,255,.1)}
.btn:active{transform:translateY(0)}
.btn-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}

/* ---------- hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  padding:calc(72px + 68px) 0 84px;
  background:url(/assets/images/backpic/back-1.webp) center/cover no-repeat;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(247,245,241,.97) 0%,rgba(247,245,241,.92) 44%,rgba(247,245,241,.6) 100%);
}
.page-hero .container{position:relative;z-index:1}
.crumbs{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);flex-wrap:wrap}
.crumbs a{color:var(--muted);transition:color .18s var(--ease)}
.crumbs a:hover{color:var(--brand)}
.crumbs .slash{opacity:.55}
.crumbs .current{color:var(--ink-2)}
.hero-grid{display:grid;grid-template-columns:1.04fr .96fr;gap:56px;align-items:center;margin-top:26px}
.hero-copy h1{
  font-size:clamp(29px,3.9vw,48px);
  line-height:1.2;letter-spacing:.01em;margin:14px 0 0;
}
.hero-copy h1 em{font-style:normal;color:var(--brand)}
.hero-lead{margin-top:18px;font-size:17.5px;color:var(--ink-2);max-width:520px}
.hero-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 16px;
  margin-top:30px;font-size:13.5px;color:var(--muted);
}
.hero-meta span{display:inline-flex;align-items:center;gap:8px}
.hero-meta span + span::before{content:"";width:1px;height:12px;background:var(--line)}
.hero-figure{margin:0}
.hero-figure img{
  width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-card);
  box-shadow:var(--sh);border:1px solid rgba(228,223,214,.9);
}
.hero-figure figcaption{margin-top:12px;font-size:13px;color:var(--muted)}
@media(max-width:991px){
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-figure{order:-1}
  .page-hero{padding:calc(72px + 40px) 0 60px}
}
@media(max-width:767px){
  .hero-copy h1{font-size:30px}
  .hero-lead{font-size:16px}
}

/* ---------- zigzag ---------- */
.zigzag{display:flex;flex-direction:column;gap:76px}
.zz-row{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.zz-media{margin:0;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);box-shadow:var(--sh)}
.zz-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .28s var(--ease)}
.zz-media:hover img{transform:scale(1.03)}
.zz-row.reverse .zz-media{order:2}
.zz-body h2{font-size:clamp(23px,2.4vw,30px);margin-bottom:14px}
.zz-body p{color:var(--ink-2);margin-top:12px}
.point-list{list-style:none;margin-top:24px;border-top:1px solid var(--line)}
.point-list li{
  position:relative;padding:13px 0 13px 28px;border-bottom:1px solid var(--line);
  font-size:15px;color:var(--ink-2);
}
.point-list li::before{
  content:"";position:absolute;left:2px;top:23px;width:8px;height:8px;
  background:var(--accent);border-radius:2px;
}
.point-list li b{color:var(--ink);font-weight:600}
@media(max-width:991px){
  .zz-row{grid-template-columns:1fr;gap:28px}
  .zz-row.reverse .zz-media{order:0}
  .zigzag{gap:56px}
}

/* ---------- checklist ---------- */
.check-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:0 56px}
.check-item{display:flex;gap:18px;padding:22px 0;border-bottom:1px solid rgba(31,64,60,.14)}
.check-num{
  font-family:var(--serif);font-size:19px;font-weight:600;color:var(--accent);
  line-height:1.4;flex:0 0 auto;min-width:32px;font-feature-settings:"tnum";
}
.check-item h3{font-size:17px;margin-bottom:4px}
.check-item p{font-size:15px;color:var(--ink-2)}
@media(max-width:767px){.check-grid{grid-template-columns:1fr}}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:32px}
.step{border-top:2px solid var(--brand);padding-top:20px}
.step-num{font-size:12.5px;letter-spacing:.14em;color:var(--muted);font-weight:600;font-feature-settings:"tnum"}
.step h3{font-size:18px;margin:10px 0 8px}
.step p{font-size:15px;color:var(--ink-2)}
@media(max-width:991px){.steps{grid-template-columns:repeat(2,1fr)}}
@media(max-width:520px){.steps{grid-template-columns:1fr;gap:24px}}

/* ---------- faq ---------- */
.faq-wrap{display:grid;grid-template-columns:.85fr 1.15fr;gap:64px;align-items:start}
.faq-intro h2{font-size:clamp(24px,2.6vw,32px)}
.faq-intro p{margin-top:16px;color:var(--ink-2)}
.faq-intro .btn{margin-top:28px}
.faq{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  list-style:none;cursor:pointer;position:relative;
  padding:22px 52px 22px 0;font-size:16.5px;font-weight:600;min-height:44px;
  transition:color .18s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--brand)}
.faq-item summary::after{
  content:"+";position:absolute;right:4px;top:50%;transform:translateY(-50%);
  width:28px;height:28px;border:1px solid var(--line);border-radius:50%;
  display:grid;place-items:center;color:var(--brand);font-size:17px;line-height:1;
  transition:background .2s var(--ease),border-color .2s var(--ease);
}
.faq-item summary:hover::after{border-color:var(--brand);background:var(--brand-soft)}
.faq-item[open] summary::after{content:"−";background:var(--brand-soft);border-color:var(--brand)}
.faq-body{padding:0 0 24px;color:var(--ink-2);font-size:15.5px;max-width:660px}
@media(max-width:991px){.faq-wrap{grid-template-columns:1fr;gap:36px}}

/* ---------- related ---------- */
.related-title{font-size:13px;letter-spacing:.14em;color:var(--muted);font-weight:600;margin-bottom:18px}
.related{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.related a{
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:24px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  transition:border-color .2s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease),color .2s var(--ease);
  min-height:44px;
}
.related a strong{font-family:var(--serif);font-size:17px;font-weight:600;display:block}
.related a small{display:block;margin-top:6px;font-size:13px;color:var(--muted);font-weight:400;font-family:var(--sans)}
.related a .arrow{color:var(--brand);font-size:18px;flex:0 0 auto;transition:transform .2s var(--ease)}
.related a:hover{border-color:var(--brand);transform:translateY(-2px);box-shadow:var(--sh-hover);color:var(--brand)}
.related a:hover .arrow{transform:translateX(3px)}
.related a:hover small{color:var(--ink-2)}
@media(max-width:991px){.related{grid-template-columns:1fr}}

/* ---------- cta band ---------- */
.cta-band{background:var(--brand-deep);color:#fff;padding:76px 0}
.cta-inner{display:grid;grid-template-columns:1.25fr .75fr;gap:48px;align-items:center}
.cta-inner h2{font-size:clamp(24px,2.8vw,34px);color:#fff}
.cta-inner p{margin-top:14px;color:rgba(255,255,255,.78);max-width:520px;font-size:16px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end}
@media(max-width:991px){
  .cta-inner{grid-template-columns:1fr;gap:28px}
  .cta-actions{justify-content:flex-start}
  .cta-band{padding:56px 0}
}

/* ---------- footer ---------- */
.site-footer{background:var(--brand-deep);color:rgba(255,255,255,.76);padding-top:8px}
.footer-top{
  display:grid;grid-template-columns:1fr 1.6fr;gap:56px;
  padding:72px 0 48px;border-bottom:1px solid rgba(255,255,255,.14);
}
.footer-brand .brand{margin-bottom:16px}
.footer-brand .brand-mark{background:rgba(255,255,255,.14)}
.footer-brand .brand-text{color:#fff}
.footer-brand p{font-size:14.5px;color:rgba(255,255,255,.7);max-width:280px}
.footer-cols{display:grid;grid-template-columns:repeat(3,1fr);gap:32px}
.footer-col h4{font-size:14px;letter-spacing:.08em;color:#fff;margin-bottom:16px;font-weight:600;font-family:var(--sans)}
.footer-col ul{list-style:none;display:grid;gap:11px;font-size:14px}
.footer-col a{color:rgba(255,255,255,.76);transition:color .18s var(--ease)}
.footer-col a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.footer-col span{color:rgba(255,255,255,.66)}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  padding:24px 0 34px;font-size:13px;color:rgba(255,255,255,.6);
}
.footer-bottom a{color:rgba(255,255,255,.76)}
.footer-bottom a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.footer-bottom .sep{margin:0 8px;opacity:.5}
@media(max-width:991px){
  .footer-top{grid-template-columns:1fr;gap:36px;padding:56px 0 40px}
}
@media(max-width:767px){
  .footer-cols{grid-template-columns:1fr 1fr;gap:28px}
  .footer-cols .footer-col:last-child{grid-column:1 / -1}
}

/* ---------- mobile tabs ---------- */
.mobile-tabs{display:none}
@media(max-width:767px){
  .mobile-tabs{
    display:flex;position:fixed;left:0;right:0;bottom:0;z-index:70;
    background:rgba(247,245,241,.97);
    -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
    border-top:1px solid var(--line);
    padding-bottom:env(safe-area-inset-bottom);
  }
  .mobile-tabs a{
    flex:1 1 0;min-height:60px;display:flex;flex-direction:column;align-items:center;justify-content:center;
    gap:3px;font-size:10.5px;line-height:1.2;color:var(--muted);position:relative;padding:6px 2px;
  }
  .mobile-tabs a.active{color:var(--brand);font-weight:600}
  .mobile-tabs a.active::before{
    content:"";position:absolute;top:0;left:24%;right:24%;height:2px;
    background:var(--brand);border-radius:2px;
  }
  .tab-icon{width:20px;height:20px;display:block}
}

/* roulang page: category2 */
:root{
  --brand:#2F5D57;
  --brand-deep:#1F403C;
  --brand-soft:#E7EFEC;
  --accent:#C1663F;
  --paper:#F7F5F1;
  --tint:#EDE8DF;
  --surface:#FFFFFF;
  --ink:#14171A;
  --ink-2:#3D444B;
  --muted:#6E747C;
  --line:#E4DFD6;
  --radius:10px;
  --radius-sm:6px;
  --shadow-1:0 1px 2px rgba(20,23,26,.05),0 8px 24px -16px rgba(20,23,26,.18);
  --shadow-2:0 2px 6px rgba(20,23,26,.06),0 16px 32px -20px rgba(20,23,26,.24);
  --ease:cubic-bezier(.2,.7,.2,1);
  --header-h:72px;
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --font-sans:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0}
h1,h2,h3,h4{
  margin:0;
  font-family:var(--font-serif);
  font-weight:600;
  line-height:1.28;
  letter-spacing:.01em;
  color:var(--ink);
}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
::selection{background:var(--brand-soft);color:var(--brand-deep)}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 40px}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(247,245,241,0);
  border-bottom:1px solid transparent;
  transition:background .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(247,245,241,.93);
  border-bottom-color:var(--line);
  backdrop-filter:blur(10px);
  box-shadow:0 1px 0 rgba(20,23,26,.03);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:var(--header-h)}
.brand{display:inline-flex;align-items:center;gap:10px;min-height:44px;flex:0 0 auto}
.brand-mark{
  width:32px;height:32px;border-radius:8px;background:var(--brand);color:#fff;
  display:grid;place-items:center;font-family:var(--font-serif);font-size:17px;font-weight:600;line-height:1;
}
.brand-text{font-family:var(--font-serif);font-size:19px;font-weight:600;letter-spacing:.02em;color:var(--ink);white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:26px}
.nav-links a{
  position:relative;font-size:15px;color:var(--ink-2);padding:10px 0;
  transition:color .2s var(--ease);white-space:nowrap;min-height:44px;display:inline-flex;align-items:center;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:6px;height:2px;background:var(--brand);
  transform:scaleX(0);transform-origin:left;transition:transform .24s var(--ease);
}
.nav-links a:hover{color:var(--brand)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.active{color:var(--brand);font-weight:600}
.nav-links a.active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;letter-spacing:.02em;border:1px solid transparent;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
  text-align:center;
}
.btn-primary{background:var(--brand);color:#fff;border-color:var(--brand)}
.btn-primary:hover{background:var(--brand-deep);border-color:var(--brand-deep);transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-primary:active{transform:translateY(0);box-shadow:var(--shadow-1)}
.btn-ghost{background:transparent;color:var(--brand);border-color:rgba(47,93,87,.4)}
.btn-ghost:hover{background:var(--brand-soft);border-color:var(--brand)}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px}
.btn-light{background:var(--paper);color:var(--brand-deep);border-color:var(--paper)}
.btn-light:hover{background:#fff;border-color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-outline-light{background:transparent;color:#F2EFE9;border-color:rgba(242,239,233,.5)}
.btn-outline-light:hover{border-color:#fff;background:rgba(255,255,255,.1)}

/* ---------- nav toggle & drawer ---------- */
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--radius-sm);border:1px solid var(--line);
  background:var(--surface);flex-direction:column;align-items:center;justify-content:center;gap:5px;
  transition:border-color .2s var(--ease);
}
.nav-toggle:hover{border-color:var(--brand)}
.nav-toggle span{display:block;width:18px;height:1.5px;background:var(--ink);border-radius:1px}
.drawer{position:fixed;inset:0;z-index:120;background:var(--paper);display:flex;flex-direction:column;overflow-y:auto;padding-bottom:32px}
.drawer[hidden]{display:none}
.drawer-head{
  position:sticky;top:0;display:flex;align-items:center;justify-content:space-between;
  height:var(--header-h);padding:0 18px;border-bottom:1px solid var(--line);background:var(--paper);
}
.drawer-close{width:44px;height:44px;border-radius:var(--radius-sm);border:1px solid var(--line);display:grid;place-items:center;font-size:22px;line-height:1;color:var(--ink-2);background:var(--surface)}
.drawer-close:hover{border-color:var(--brand);color:var(--brand)}
.drawer-nav{display:flex;flex-direction:column;padding:8px 18px}
.drawer-nav a{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:15px 4px;border-bottom:1px solid var(--line);font-size:17px;min-height:52px;color:var(--ink-2);
}
.drawer-nav a.active{color:var(--brand);font-weight:600}
.drawer-nav a span.dot{width:6px;height:6px;border-radius:50%;background:var(--accent);opacity:0}
.drawer-nav a.active span.dot{opacity:1}
.drawer-cta{margin:26px 18px 0}
.drawer-cta .btn{width:100%}

/* ---------- tabbar ---------- */
.tabbar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:110;
  background:rgba(255,255,255,.97);border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
  box-shadow:0 -6px 20px -18px rgba(20,23,26,.45);
  overflow-x:auto;scrollbar-width:none;-webkit-overflow-scrolling:touch;
}
.tabbar::-webkit-scrollbar{display:none}
.tabbar-inner{display:flex;min-width:100%}
.tabbar a{
  position:relative;flex:1 0 auto;min-width:62px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  height:60px;font-size:10.5px;letter-spacing:.02em;color:var(--muted);white-space:nowrap;
  transition:color .2s var(--ease);
}
.tabbar a svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.tabbar a.active{color:var(--brand);font-weight:600}
.tabbar a.active::before{content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);width:22px;height:2px;border-radius:2px;background:var(--brand)}
.tabbar a:active{background:var(--brand-soft)}

/* ---------- page hero ---------- */
.page-hero{padding:64px 0 76px;border-bottom:1px solid var(--line)}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;letter-spacing:.04em;color:var(--muted);margin-bottom:22px}
.breadcrumb a{color:var(--muted);border-bottom:1px solid transparent;transition:color .2s var(--ease),border-color .2s var(--ease)}
.breadcrumb a:hover{color:var(--brand);border-bottom-color:var(--brand)}
.breadcrumb .slash{color:var(--line)}
.breadcrumb .current{color:var(--ink-2)}
.eyebrow{font-size:13px;font-weight:600;letter-spacing:.16em;color:var(--accent);margin-bottom:14px}
.page-hero h1{font-size:clamp(30px,4.4vw,50px);line-height:1.18;letter-spacing:.01em}
.lead{margin-top:20px;font-size:17px;line-height:1.85;color:var(--ink-2);max-width:30em}
.hero-tags{display:flex;flex-wrap:wrap;align-items:center;margin-top:26px;font-size:13px;letter-spacing:.05em;color:var(--muted)}
.hero-tags span{display:inline-flex;align-items:center;white-space:nowrap}
.hero-tags span+span::before{content:"";width:1px;height:12px;background:var(--line);margin:0 14px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-media{margin:0;position:relative}
.hero-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius);
  border:1px solid var(--line);box-shadow:var(--shadow-1);
}
.hero-media figcaption{margin-top:12px;font-size:13px;color:var(--muted);letter-spacing:.02em}

/* ---------- sections ---------- */
.section{padding:96px 0}
.section-tint{background:var(--tint)}
.section-head{max-width:720px;margin-bottom:48px}
.section-head h2{font-size:clamp(24px,3vw,34px)}
.section-lead{margin-top:16px;font-size:16.5px;color:var(--ink-2);max-width:56ch}

/* ---------- timeline ---------- */
.timeline{max-width:860px}
.tl-item{position:relative;padding:0 0 46px 76px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{content:"";position:absolute;left:23px;top:52px;bottom:2px;width:1px;background:var(--line)}
.tl-item:last-child::before{display:none}
.tl-num{
  position:absolute;left:0;top:0;width:47px;height:47px;border-radius:50%;
  display:grid;place-items:center;background:var(--surface);border:1px solid var(--line);
  font-family:var(--font-serif);font-size:14px;letter-spacing:.06em;color:var(--accent);
  transition:border-color .22s var(--ease),background .22s var(--ease),color .22s var(--ease);
  font-feature-settings:"tnum";
}
.tl-item:hover .tl-num{border-color:var(--brand);background:var(--brand-soft);color:var(--brand-deep)}
.tl-item h3{font-size:21px;padding-top:8px}
.tl-item p{margin-top:10px;font-size:15.5px;color:var(--ink-2);max-width:56ch;line-height:1.85}
.tl-note{margin-top:12px;font-size:13px;color:var(--muted);letter-spacing:.03em;display:inline-flex;gap:8px;align-items:baseline}
.tl-note::before{content:"";width:14px;height:1px;background:var(--accent);display:inline-block;transform:translateY(-3px)}

/* ---------- feature cards ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feature-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:28px 26px 30px;
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.feature-card:hover{transform:translateY(-2px);border-color:var(--brand);box-shadow:var(--shadow-2)}
.card-index{font-family:var(--font-serif);font-size:13px;letter-spacing:.1em;color:var(--accent)}
.feature-card h3{margin-top:12px;font-size:20px}
.feature-card p{margin-top:10px;font-size:15px;line-height:1.8;color:var(--muted)}

/* ---------- split / habits ---------- */
.split{display:grid;grid-template-columns:.85fr 1.15fr;gap:64px;align-items:start}
.split h2{font-size:clamp(24px,3vw,32px)}
.split .lead-text{margin-top:16px;font-size:15.5px;color:var(--ink-2);max-width:40ch}
.habit-list{display:grid}
.habit{display:grid;grid-template-columns:auto 1fr;gap:18px;padding:22px 0;border-top:1px solid var(--line);transition:background .2s var(--ease)}
.habit:last-child{border-bottom:1px solid var(--line)}
.habit-num{font-family:var(--font-serif);font-size:13px;letter-spacing:.08em;color:var(--accent);padding-top:7px;font-feature-settings:"tnum"}
.habit h3{font-size:18px}
.habit p{margin-top:6px;font-size:15px;color:var(--muted);line-height:1.8}

/* ---------- faq ---------- */
.faq-wrap{display:grid;grid-template-columns:.8fr 1.2fr;gap:64px;align-items:start}
.faq-intro h2{font-size:clamp(24px,3vw,32px)}
.faq-intro p{margin-top:16px;font-size:15.5px;color:var(--ink-2);max-width:38ch}
.faq-intro .btn{margin-top:24px}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 0;min-height:44px;font-size:17px;font-weight:600;color:var(--ink);line-height:1.6;
  transition:color .2s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--brand)}
.faq-icon{
  position:relative;flex:0 0 24px;width:24px;height:24px;border-radius:50%;
  border:1px solid var(--line);transition:border-color .2s var(--ease),background .2s var(--ease);
}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--brand);border-radius:1px}
.faq-icon::before{left:6px;right:6px;top:11px;height:1.5px}
.faq-icon::after{top:6px;bottom:6px;left:11px;width:1.5px;transition:transform .22s var(--ease),opacity .22s var(--ease)}
details[open] .faq-icon{background:var(--brand-soft);border-color:var(--brand)}
details[open] .faq-icon::after{transform:scaleY(0);opacity:0}
.faq-body{padding:0 0 24px;max-width:64ch}
.faq-body p{font-size:15.5px;color:var(--ink-2);line-height:1.9}
.faq-body p+p{margin-top:12px}

/* ---------- related ---------- */
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.related-card{
  display:flex;flex-direction:column;gap:8px;padding:26px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.related-card:hover{transform:translateY(-2px);border-color:var(--brand);box-shadow:var(--shadow-2)}
.related-label{font-size:12px;font-weight:600;letter-spacing:.14em;color:var(--accent)}
.related-card h3{font-size:19px;margin-top:2px}
.related-arrow{margin-top:10px;font-size:18px;color:var(--brand);transition:transform .22s var(--ease)}
.related-card:hover .related-arrow{transform:translateX(4px)}

/* ---------- cta band ---------- */
.cta-band{background:var(--brand);color:#F2EFE9;padding:64px 0}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap}
.cta-band h2{color:#fff;font-size:clamp(22px,2.6vw,30px);max-width:20em}
.cta-band p{margin-top:12px;font-size:15.5px;line-height:1.85;color:rgba(242,239,233,.8);max-width:46ch}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ---------- footer ---------- */
.site-footer{background:var(--brand-deep);color:rgba(242,239,233,.72);padding-top:72px}
.footer-top{display:grid;grid-template-columns:1fr 1.55fr;gap:56px;padding-bottom:56px}
.footer-brand .brand-mark{background:rgba(255,255,255,.14);color:#fff}
.footer-brand .brand-text{color:#fff}
.footer-brand p{margin-top:16px;font-size:15px;line-height:1.8;max-width:22em;color:rgba(242,239,233,.7)}
.footer-cols{display:grid;grid-template-columns:repeat(3,1fr);gap:32px}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;letter-spacing:.06em;margin-bottom:16px}
.footer-col li{margin-bottom:10px;font-size:14.5px;line-height:1.75}
.footer-col a{color:rgba(242,239,233,.72);transition:color .2s var(--ease);border-bottom:1px solid transparent}
.footer-col a:hover{color:#fff;border-bottom-color:rgba(255,255,255,.5)}
.footer-col span{color:rgba(242,239,233,.62)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14);
  padding-top:22px;padding-bottom:28px;
  display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;
  font-size:13.5px;color:rgba(242,239,233,.6);
}
.footer-bottom a{color:rgba(242,239,233,.78);transition:color .2s var(--ease)}
.footer-bottom a:hover{color:#fff}
.footer-bottom .sep{margin:0 8px;color:rgba(242,239,233,.4)}

/* ---------- responsive ---------- */
@media (max-width:1099px){
  .nav-links{display:none}
  .nav-toggle{display:inline-flex}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-media{order:-1}
  .split,.faq-wrap{grid-template-columns:1fr;gap:36px}
  .card-grid{grid-template-columns:repeat(2,1fr)}
  .related-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:991px){
  .container{padding:0 24px}
  .section{padding:80px 0}
  .page-hero{padding:48px 0 64px}
  .footer-top{grid-template-columns:1fr;gap:40px;padding-bottom:44px}
  .footer-cols{gap:24px}
  .split,.faq-wrap{gap:32px}
}
@media (max-width:767px){
  body{padding-bottom:calc(60px + env(safe-area-inset-bottom))}
  .tabbar{display:block}
  .header-actions .btn{display:none}
  .brand-text{font-size:17px}
  .section{padding:60px 0}
  .page-hero{padding:36px 0 52px}
  .hero-grid{gap:32px}
  .lead{font-size:16px}
  .hero-tags{font-size:12.5px}
  .hero-tags span+span::before{margin:0 10px}
  .card-grid{grid-template-columns:1fr}
  .related-grid{grid-template-columns:1fr}
  .section-head{margin-bottom:32px}
  .tl-item{padding-left:64px;padding-bottom:38px}
  .tl-item h3{font-size:19px}
  .tl-num{width:42px;height:42px;font-size:13px}
  .tl-item::before{left:20px;top:46px}
  .cta-band{padding:48px 0}
  .footer-cols{grid-template-columns:1fr 1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px}
  .btn{width:100%}
  .hero-actions{gap:10px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .faq-item summary{font-size:16px}
}
@media (max-width:520px){
  .container{padding:0 18px}
  .page-hero h1{font-size:29px}
  .lead{max-width:none}
  .tl-item{padding-left:58px}
  .tl-num{width:38px;height:38px}
  .tl-item::before{left:18px;top:42px}
  .footer-cols{grid-template-columns:1fr}
  .brand-mark{width:30px;height:30px;font-size:16px}
  .tabbar a{min-width:58px;font-size:10px}
  .feature-card{padding:24px 20px 26px}
  .related-card{padding:22px 20px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important}
}

/* roulang page: category3 */
:root{
  --brand:#2F5D57;
  --brand-deep:#1F403C;
  --brand-soft:#E7EFEC;
  --accent:#C1663F;
  --paper:#F7F5F1;
  --tint:#EDE8DF;
  --surface:#FFFFFF;
  --ink:#14171A;
  --ink-2:#3D444B;
  --muted:#6E747C;
  --line:#E4DFD6;
  --radius-card:10px;
  --radius-btn:6px;
  --shadow-1:0 1px 2px rgba(20,23,26,.05),0 8px 24px -16px rgba(20,23,26,.18);
  --shadow-2:0 2px 6px rgba(20,23,26,.06),0 16px 32px -20px rgba(20,23,26,.24);
  --ease:cubic-bezier(.2,.7,.2,1);
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --sans:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --header-h:72px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.85;
  color:var(--ink-2);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4{
  font-family:var(--serif);
  color:var(--ink);
  font-weight:600;
  line-height:1.22;
  letter-spacing:.01em;
  margin:0;
}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
::selection{background:var(--brand-soft);color:var(--brand-deep)}

:focus-visible{
  outline:2px solid var(--brand);
  outline-offset:2px;
  border-radius:4px;
}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 40px;
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:46px;
  padding:0 24px;
  font-size:15px;
  font-weight:600;
  letter-spacing:.02em;
  border-radius:var(--radius-btn);
  border:1px solid transparent;
  cursor:pointer;
  transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--shadow-1)}
.btn-primary:hover{background:var(--brand-deep);transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;color:var(--brand);border-color:var(--brand)}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-deep)}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:120;
  background:rgba(247,245,241,.86);
  backdrop-filter:saturate(150%) blur(10px);
  -webkit-backdrop-filter:saturate(150%) blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
}
.site-header.scrolled{
  border-bottom-color:var(--line);
  box-shadow:0 6px 20px -18px rgba(20,23,26,.4);
}
.header-inner{
  height:var(--header-h);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.brand-mark{
  width:32px;
  height:32px;
  display:grid;
  place-items:center;
  border-radius:8px;
  background:var(--brand);
  color:#fff;
  font-family:var(--serif);
  font-size:16px;
  font-weight:700;
  line-height:1;
}
.brand-text{
  font-family:var(--serif);
  font-size:19px;
  font-weight:600;
  color:var(--ink);
  letter-spacing:.02em;
  white-space:nowrap;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:4px;
  margin-left:auto;
}
.nav-links a{
  position:relative;
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:0 14px;
  font-size:15px;
  color:var(--ink-2);
  border-radius:var(--radius-btn);
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:14px;
  right:14px;
  bottom:8px;
  height:2px;
  background:var(--brand);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .24s var(--ease);
}
.nav-links a:hover{color:var(--ink);background:rgba(231,239,236,.6)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.active{color:var(--brand-deep);font-weight:600}
.nav-links a.active::after{transform:scaleX(1)}
.header-actions{
  display:flex;
  align-items:center;
  gap:12px;
  flex-shrink:0;
}
.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  padding:0;
  border:1px solid var(--line);
  border-radius:var(--radius-btn);
  background:var(--surface);
  cursor:pointer;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:4px;
}
.nav-toggle span{
  display:block;
  width:18px;
  height:2px;
  background:var(--ink);
  border-radius:2px;
  transition:transform .22s var(--ease),opacity .22s var(--ease);
}
body.drawer-open .nav-toggle span:nth-child(1){transform:translateY(6px) rotate(45deg)}
body.drawer-open .nav-toggle span:nth-child(2){opacity:0}
body.drawer-open .nav-toggle span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

.mobile-drawer{
  position:fixed;
  top:var(--header-h);
  left:0;
  right:0;
  bottom:0;
  z-index:110;
  background:var(--paper);
  border-top:1px solid var(--line);
  padding:16px 24px 40px;
  overflow-y:auto;
  display:none;
}
.mobile-drawer.open{display:block;animation:drawerIn .24s var(--ease)}
@keyframes drawerIn{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:none}}
.mobile-drawer a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  min-height:56px;
  padding:0 4px;
  font-size:17px;
  color:var(--ink-2);
  border-bottom:1px solid var(--line);
}
.mobile-drawer a::after{content:"→";color:var(--muted);font-size:15px}
.mobile-drawer a.active{color:var(--brand-deep);font-weight:600}
.mobile-drawer .btn{margin-top:24px}

/* ---------- 面包屑 ---------- */
.crumbs{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:13px;
  color:var(--muted);
  letter-spacing:.03em;
}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--brand)}
.crumbs .sep{color:var(--line)}
.crumbs .current{color:var(--ink-2)}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  padding:56px 0 84px;
  background-image:linear-gradient(180deg,rgba(247,245,241,.95) 0%,rgba(247,245,241,.9) 55%,rgba(247,245,241,.98) 100%),url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
}
.hero-grid{
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:64px;
  align-items:center;
  margin-top:28px;
}
.hero h1{
  font-size:clamp(30px,4vw,50px);
  line-height:1.18;
  margin-bottom:24px;
}
.hero h1 em{
  font-style:normal;
  color:var(--brand);
  position:relative;
}
.hero h1 em::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:.08em;
  height:6px;
  background:rgba(193,102,63,.22);
  z-index:-1;
}
.hero-lead{
  font-size:17px;
  color:var(--ink-2);
  max-width:32em;
  margin-bottom:32px;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-bottom:34px;
}
.hero-tags{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:16px;
  font-size:13px;
  letter-spacing:.05em;
  color:var(--muted);
}
.hero-tags li{display:flex;align-items:center;gap:16px}
.hero-tags li+li::before{
  content:"";
  width:1px;
  height:12px;
  background:var(--line);
  display:inline-block;
}
.hero-visual{
  position:relative;
  border-radius:var(--radius-card);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow-1);
  background:var(--surface);
}
.hero-visual img{
  width:100%;
  aspect-ratio:16/11;
  object-fit:cover;
  transition:transform .5s var(--ease);
}
.hero-visual:hover img{transform:scale(1.03)}
.hero-visual figcaption{
  position:absolute;
  left:16px;
  bottom:16px;
  padding:8px 14px;
  border-radius:999px;
  background:rgba(247,245,241,.92);
  font-size:12.5px;
  letter-spacing:.06em;
  color:var(--ink-2);
  border:1px solid var(--line);
}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0}
.section.tint{background:var(--tint)}
.section-head{max-width:720px;margin-bottom:48px}
.section-head .eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:13px;
  letter-spacing:.14em;
  color:var(--brand);
  margin-bottom:16px;
}
.section-head .eyebrow::before{
  content:"";
  width:22px;
  height:1px;
  background:var(--brand);
}
.section-head h2{
  font-size:clamp(24px,3vw,34px);
  margin-bottom:18px;
}
.section-head p{font-size:16.5px;color:var(--ink-2)}

/* ---------- 终端对照行 ---------- */
.device-list{border-top:1px solid var(--line)}
.device-row{
  display:grid;
  grid-template-columns:220px 1fr 260px;
  gap:32px;
  align-items:start;
  padding:30px 0;
  border-bottom:1px solid var(--line);
  transition:background .22s var(--ease);
}
.device-row:hover{background:rgba(255,255,255,.55)}
.device-name{
  font-family:var(--serif);
  font-size:20px;
  font-weight:600;
  color:var(--ink);
  display:flex;
  align-items:center;
  gap:12px;
}
.device-name .idx{
  font-family:var(--sans);
  font-size:12px;
  font-weight:700;
  letter-spacing:.08em;
  color:var(--accent);
}
.device-desc{font-size:16px;color:var(--ink-2)}
.device-time{
  font-size:14px;
  color:var(--muted);
  display:flex;
  align-items:flex-start;
  gap:8px;
}
.device-time::before{
  content:"";
  width:6px;
  height:6px;
  margin-top:9px;
  border-radius:50%;
  background:var(--brand);
  flex-shrink:0;
}

/* ---------- 步骤流程 ---------- */
.steps{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
  counter-reset:step;
}
.step{
  position:relative;
  padding:28px 22px 26px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.step:hover{transform:translateY(-2px);border-color:var(--brand);box-shadow:var(--shadow-2)}
.step-no{
  font-family:var(--sans);
  font-size:13px;
  font-weight:700;
  letter-spacing:.1em;
  color:var(--accent);
  display:block;
  margin-bottom:14px;
}
.step h3{font-size:19px;margin-bottom:10px}
.step p{font-size:14.5px;line-height:1.8;color:var(--muted)}

/* ---------- 图文分栏 ---------- */
.split{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:64px;
  align-items:center;
}
.split-media{
  border-radius:var(--radius-card);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow-1);
}
.split-media img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  transition:transform .5s var(--ease);
}
.split-media:hover img{transform:scale(1.03)}
.split-body h2{
  font-size:clamp(23px,2.6vw,32px);
  margin-bottom:20px;
}
.split-body p{font-size:16.5px;margin-bottom:16px}
.point-list{margin-top:26px;border-top:1px solid var(--line)}
.point-list li{
  display:flex;
  gap:14px;
  padding:14px 0;
  border-bottom:1px solid var(--line);
  font-size:15.5px;
  color:var(--ink-2);
}
.point-list li::before{
  content:"";
  width:7px;
  height:7px;
  margin-top:10px;
  background:var(--accent);
  flex-shrink:0;
}

/* ---------- 排查顺序 ---------- */
.check-grid{
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:56px;
  align-items:start;
}
.order-list{counter-reset:o;border-top:1px solid var(--line)}
.order-list li{
  counter-increment:o;
  display:grid;
  grid-template-columns:44px 1fr;
  gap:16px;
  padding:22px 0;
  border-bottom:1px solid var(--line);
}
.order-list li::before{
  content:counter(o,decimal-leading-zero);
  font-family:var(--sans);
  font-size:13px;
  font-weight:700;
  letter-spacing:.08em;
  color:var(--accent);
  padding-top:4px;
}
.order-list strong{
  display:block;
  font-family:var(--serif);
  font-size:17.5px;
  font-weight:600;
  color:var(--ink);
  margin-bottom:4px;
}
.order-list span{font-size:15px;color:var(--muted)}
.note-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-left:3px solid var(--brand);
  border-radius:var(--radius-card);
  padding:30px 28px;
  box-shadow:var(--shadow-1);
}
.note-card h3{font-size:19px;margin-bottom:14px}
.note-card p{font-size:15px;color:var(--ink-2);margin-bottom:14px}
.note-card p:last-child{margin-bottom:0}
.note-card .tag{
  display:inline-block;
  padding:4px 12px;
  border-radius:999px;
  background:var(--brand-soft);
  color:var(--brand-deep);
  font-size:12.5px;
  letter-spacing:.04em;
  margin-bottom:16px;
}

/* ---------- FAQ ---------- */
.faq{max-width:860px}
.faq-item{border-top:1px solid var(--line)}
.faq-item:last-child{border-bottom:1px solid var(--line)}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:24px 0;
  font-family:var(--serif);
  font-size:18px;
  font-weight:600;
  color:var(--ink);
  transition:color .2s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--brand)}
.faq-mark{
  width:30px;
  height:30px;
  flex-shrink:0;
  border-radius:50%;
  border:1px solid var(--line);
  display:grid;
  place-items:center;
  position:relative;
  transition:border-color .22s var(--ease),background .22s var(--ease);
}
.faq-mark::before,
.faq-mark::after{
  content:"";
  position:absolute;
  background:var(--brand);
  transition:transform .22s var(--ease),opacity .22s var(--ease);
}
.faq-mark::before{width:12px;height:1.5px}
.faq-mark::after{width:1.5px;height:12px}
.faq-item[open] .faq-mark{background:var(--brand-soft);border-color:var(--brand)}
.faq-item[open] .faq-mark::after{transform:scaleY(0);opacity:0}
.faq-body{padding:0 46px 26px 0;font-size:15.8px;color:var(--ink-2)}
.faq-body p+p{margin-top:12px}

/* ---------- CTA / 表单 ---------- */
.cta-section{
  padding:96px 0;
  background:var(--tint);
  border-top:1px solid var(--line);
}
.cta-grid{
  display:grid;
  grid-template-columns:.9fr 1.1fr;
  gap:64px;
  align-items:start;
}
.cta-copy h2{font-size:clamp(24px,3vw,34px);margin-bottom:18px}
.cta-copy p{font-size:16.5px;margin-bottom:24px}
.cta-points li{
  display:flex;
  gap:12px;
  font-size:15.5px;
  color:var(--ink-2);
  padding:10px 0;
  border-bottom:1px dashed var(--line);
}
.cta-points li::before{
  content:"";
  width:6px;
  height:6px;
  margin-top:10px;
  border-radius:50%;
  background:var(--brand);
  flex-shrink:0;
}
.form-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:34px 32px;
  box-shadow:var(--shadow-1);
}
.form-card h3{font-size:20px;margin-bottom:6px}
.form-card .form-hint{font-size:14px;color:var(--muted);margin-bottom:24px}
.field{margin-bottom:18px}
.field label{
  display:block;
  font-size:14px;
  font-weight:600;
  color:var(--ink);
  margin-bottom:8px;
}
.field label .req{color:var(--accent);margin-left:4px}
.field input,
.field textarea{
  width:100%;
  min-height:46px;
  padding:12px 14px;
  font-family:inherit;
  font-size:15px;
  color:var(--ink);
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--radius-btn);
  transition:border-color .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease);
}
.field textarea{min-height:104px;resize:vertical;line-height:1.7}
.field input::placeholder,
.field textarea::placeholder{color:#9aa0a7}
.field input:hover,
.field textarea:hover{border-color:#cfc8bc}
.field input:focus,
.field textarea:focus{
  outline:none;
  background:var(--surface);
  border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(47,93,87,.12);
}
.form-privacy{
  margin-top:16px;
  font-size:12.8px;
  line-height:1.75;
  color:var(--muted);
}
.form-privacy a{color:var(--brand);text-decoration:underline;text-underline-offset:3px}

/* ---------- 关联内链 ---------- */
.related{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.rel-card{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:24px 24px;
  min-height:88px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.rel-card:hover{transform:translateY(-2px);border-color:var(--brand);box-shadow:var(--shadow-2)}
.rel-card .rel-title{
  font-family:var(--serif);
  font-size:17.5px;
  font-weight:600;
  color:var(--ink);
}
.rel-card .rel-sub{display:block;font-size:13px;color:var(--muted);margin-top:2px;font-family:var(--sans);font-weight:400}
.rel-card .arrow{color:var(--brand);font-size:18px;transition:transform .22s var(--ease)}
.rel-card:hover .arrow{transform:translateX(4px)}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--brand-deep);
  color:#d5e2de;
  padding:72px 0 0;
}
.footer-top{
  display:grid;
  grid-template-columns:1.05fr 2fr;
  gap:64px;
  padding-bottom:56px;
}
.footer-brand .brand{margin-bottom:18px}
.footer-brand .brand-mark{background:rgba(255,255,255,.14);color:#fff}
.footer-brand .brand-text{color:#fff}
.footer-brand p{font-size:14.5px;color:rgba(213,226,222,.78);max-width:22em}
.footer-cols{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:32px;
}
.footer-col h4{
  font-family:var(--sans);
  font-size:13px;
  letter-spacing:.12em;
  color:rgba(213,226,222,.62);
  font-weight:600;
  margin-bottom:16px;
}
.footer-col ul li{margin-bottom:10px;font-size:14.5px}
.footer-col ul li a,
.footer-col ul li span{color:rgba(230,240,236,.9)}
.footer-col ul li a{transition:color .2s var(--ease)}
.footer-col ul li a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14);
  padding:24px 40px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  font-size:13px;
  color:rgba(213,226,222,.7);
}
.footer-bottom a{color:rgba(230,240,236,.9)}
.footer-bottom a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px}
.footer-bottom .sep{margin:0 8px;opacity:.5}

/* ---------- 移动底部 Tab ---------- */
.mobile-tab{
  display:none;
  position:fixed;
  left:0;
  right:0;
  bottom:0;
  z-index:130;
  background:rgba(247,245,241,.97);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
}
.mobile-tab .tab-inner{display:flex}
.mobile-tab a{
  flex:1;
  min-width:0;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:3px;
  height:58px;
  position:relative;
  font-size:10.5px;
  letter-spacing:.02em;
  color:var(--muted);
  transition:color .2s var(--ease);
}
.mobile-tab a svg{width:19px;height:19px;stroke:currentColor;fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.mobile-tab a::before{
  content:"";
  position:absolute;
  top:0;
  left:50%;
  transform:translateX(-50%) scaleX(0);
  width:26px;
  height:2px;
  background:var(--brand);
  transition:transform .22s var(--ease);
}
.mobile-tab a.active{color:var(--brand-deep);font-weight:600}
.mobile-tab a.active::before{transform:translateX(-50%) scaleX(1)}
.mobile-tab a.active svg{stroke:var(--brand)}

/* ---------- 进入视口动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .container{padding:0 32px}
  .hero-grid{gap:44px}
  .split{gap:44px}
  .cta-grid{gap:44px}
  .check-grid{gap:40px}
}
@media (max-width:991px){
  .container{padding:0 24px}
  .nav-links{display:none}
  .nav-toggle{display:flex}
  .hero{padding:40px 0 64px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero h1{font-size:34px}
  .section{padding:72px 0}
  .cta-section{padding:72px 0}
  .steps{grid-template-columns:repeat(2,1fr)}
  .split{grid-template-columns:1fr;gap:32px}
  .check-grid{grid-template-columns:1fr;gap:32px}
  .cta-grid{grid-template-columns:1fr;gap:36px}
  .device-row{grid-template-columns:1fr;gap:10px;padding:24px 0}
  .device-time{margin-top:2px}
  .related{grid-template-columns:1fr}
  .footer-top{grid-template-columns:1fr;gap:40px}
  .footer-cols{grid-template-columns:repeat(2,1fr);gap:28px}
  .footer-bottom{padding:20px 24px}
}
@media (max-width:900px){
  .mobile-tab{display:block}
  body{padding-bottom:calc(58px + env(safe-area-inset-bottom))}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .header-inner{gap:12px}
  .brand-text{font-size:16px}
  .brand-mark{width:28px;height:28px;font-size:14px}
  .header-actions .btn-sm{display:none}
  .hero{padding:32px 0 52px}
  .hero h1{font-size:29px;margin-bottom:18px}
  .hero-lead{font-size:15.5px;margin-bottom:26px}
  .hero-actions .btn{flex:1 1 auto}
  .hero-tags{gap:10px;font-size:12px}
  .hero-tags li{gap:10px}
  .section{padding:56px 0}
  .cta-section{padding:56px 0}
  .section-head{margin-bottom:32px}
  .section-head h2{font-size:24px}
  .steps{grid-template-columns:1fr;gap:14px}
  .step{padding:22px 18px}
  .faq-item summary{font-size:16px;padding:20px 0}
  .faq-body{padding-right:0;font-size:15px}
  .form-card{padding:26px 20px}
  .footer-cols{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start;font-size:12.5px}
  .mobile-tab a{font-size:10px}
  .device-name{font-size:18px}
}
@media (max-width:480px){
  .hero-tags{flex-direction:column;align-items:flex-start;gap:6px}
  .hero-tags li+li::before{display:none}
  .rel-card{padding:20px 18px}
  .btn{font-size:14.5px;padding:0 18px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category4 */
:root{
  --brand:#2F5D57;
  --brand-deep:#1F403C;
  --brand-soft:#E7EFEC;
  --accent:#C1663F;
  --paper:#F7F5F1;
  --tint:#EDE8DF;
  --surface:#FFFFFF;
  --ink:#14171A;
  --ink-2:#3D444B;
  --muted:#6E747C;
  --line:#E4DFD6;
  --radius-card:10px;
  --radius-btn:6px;
  --shadow-1:0 1px 2px rgba(20,23,26,.05),0 8px 24px -16px rgba(20,23,26,.18);
  --shadow-2:0 2px 6px rgba(20,23,26,.06),0 16px 32px -20px rgba(20,23,26,.24);
  --ease:cubic-bezier(.2,.7,.2,1);
  --nav-h:72px;
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --font-sans:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  padding-top:var(--nav-h);
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
body.is-locked{overflow:hidden}
img{max-width:100%;display:block;height:auto}
a{color:var(--brand);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--brand-deep)}
button,input,textarea,select{font:inherit;color:inherit}
h1,h2,h3,h4{font-family:var(--font-serif);font-weight:600;margin:0;color:var(--ink);letter-spacing:.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 40px}
.section{padding:96px 0}
.section--tint{background:var(--tint)}
.section--plain{background:var(--paper)}
.eyebrow{
  font-size:13px;letter-spacing:.14em;color:var(--muted);
  display:flex;align-items:center;gap:12px;margin-bottom:18px;text-transform:uppercase;
}
.eyebrow::before{content:"";width:28px;height:1px;background:var(--accent);display:block}
h2.section-title{font-size:34px;line-height:1.3;margin-bottom:16px}
.section-lead{max-width:660px;color:var(--ink-2);font-size:16.5px}
.section-head{margin-bottom:52px}

/* ---------- Header / Nav ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  height:var(--nav-h);
  background:rgba(247,245,241,.94);
  border-bottom:1px solid transparent;
  transition:border-color .24s var(--ease),background .24s var(--ease),backdrop-filter .24s var(--ease);
}
.site-header.is-scrolled{
  border-bottom:1px solid var(--line);
  background:rgba(247,245,241,.9);
  backdrop-filter:blur(10px);
}
.header-inner{
  height:100%;display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink)}
.brand:hover{color:var(--ink)}
.brand-mark{
  width:34px;height:34px;border-radius:50%;background:var(--brand);color:#fff;
  display:grid;place-items:center;font-family:var(--font-serif);font-size:16px;font-weight:600;
  flex:none;
}
.brand-text{font-family:var(--font-serif);font-size:19px;font-weight:600;letter-spacing:.02em;white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:30px}
.nav-links a{
  position:relative;color:var(--ink-2);font-size:15px;padding:6px 0;white-space:nowrap;
}
.nav-links a::after{
  content:"";position:absolute;left:0;bottom:0;height:1px;width:0;background:var(--brand);
  transition:width .24s var(--ease);
}
.nav-links a:hover{color:var(--brand)}
.nav-links a:hover::after{width:100%}
.nav-links a.active{color:var(--brand);font-weight:600}
.nav-links a.active::after{width:100%}
.header-cta{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:44px;padding:0 22px;border-radius:var(--radius-btn);
  background:var(--brand);color:#fff;font-size:15px;font-weight:500;
  border:1px solid var(--brand);transition:background .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.header-cta:hover{background:var(--brand-deep);border-color:var(--brand-deep);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-1)}
.menu-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:var(--radius-btn);
  background:var(--surface);cursor:pointer;align-items:center;justify-content:center;
}
.menu-toggle span{display:block;width:18px;height:1.5px;background:var(--ink);position:relative}
.menu-toggle span::before,.menu-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:1.5px;background:var(--ink);
}
.menu-toggle span::before{top:-6px}
.menu-toggle span::after{top:6px}

/* ---------- Drawer ---------- */
.drawer{
  position:fixed;inset:var(--nav-h) 0 0 0;z-index:99;
  background:var(--paper);padding:24px 18px 40px;
  display:none;flex-direction:column;gap:4px;overflow-y:auto;
}
.drawer.is-open{display:flex}
.drawer a{
  display:flex;align-items:center;min-height:52px;padding:0 16px;
  border-bottom:1px solid var(--line);color:var(--ink-2);font-size:16px;
}
.drawer a.active{color:var(--brand);font-weight:600}
.drawer .drawer-cta{
  margin-top:20px;justify-content:center;background:var(--brand);color:#fff;
  border:1px solid var(--brand);border-radius:var(--radius-btn);font-weight:500;
}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  border-bottom:1px solid var(--line);
  background:#2b2f2e;
}
.hero-bg{
  position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
  opacity:.42;filter:saturate(.85);
}
.hero-veil{
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(247,245,241,.86) 0%,rgba(247,245,241,.95) 62%,rgba(247,245,241,1) 100%);
}
.hero-inner{position:relative;padding:84px 0 76px;max-width:820px}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:26px}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--brand)}
.crumbs .sep{color:var(--line)}
.crumbs .current{color:var(--ink-2)}
.hero h1{font-size:48px;line-height:1.18;margin-bottom:20px}
.hero p.hero-sub{font-size:17.5px;color:var(--ink-2);max-width:620px;margin-bottom:32px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:36px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 26px;border-radius:var(--radius-btn);
  font-size:15.5px;font-weight:500;border:1px solid transparent;cursor:pointer;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-primary{background:var(--brand);color:#fff;border-color:var(--brand)}
.btn-primary:hover{background:var(--brand-deep);border-color:var(--brand-deep);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-2)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px)}
.hero-facts{display:flex;flex-wrap:wrap;gap:10px 22px;font-size:13.5px;color:var(--muted);letter-spacing:.02em}
.hero-facts li{display:flex;align-items:center;gap:10px}
.hero-facts li+li::before{content:"";width:1px;height:12px;background:var(--line);display:block}

/* ---------- Risk grid ---------- */
.risk-list{display:grid;grid-template-columns:repeat(2,1fr);gap:0 48px}
.risk-item{
  display:grid;grid-template-columns:56px 1fr;gap:18px;
  padding:26px 0;border-top:1px solid var(--line);
}
.risk-num{
  font-family:var(--font-serif);font-size:20px;font-weight:600;color:var(--accent);
  padding-top:2px;font-feature-settings:"tnum";
}
.risk-item h3{font-size:20px;margin-bottom:8px}
.risk-item p{color:var(--ink-2);font-size:15.5px}

/* ---------- Steps ---------- */
.steps{position:relative;margin-top:8px}
.steps::before{
  content:"";position:absolute;left:23px;top:12px;bottom:12px;width:1px;background:var(--line);
}
.step{position:relative;display:grid;grid-template-columns:48px 1fr;gap:24px;padding:0 0 40px}
.step:last-child{padding-bottom:0}
.step-dot{
  width:48px;height:48px;border-radius:50%;background:var(--surface);border:1px solid var(--line);
  display:grid;place-items:center;font-family:var(--font-serif);font-size:16px;font-weight:600;color:var(--brand);
  position:relative;z-index:1;
}
.step h3{font-size:20px;margin-bottom:6px;padding-top:8px}
.step p{color:var(--ink-2);font-size:15.5px;max-width:620px}

/* ---------- Checklist / media split ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.media{
  border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--shadow-1);background:var(--surface);
}
.media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .5s var(--ease)}
.media:hover img{transform:scale(1.03)}
.checklist{margin-top:26px;display:grid;gap:0}
.checklist li{
  display:flex;gap:14px;align-items:flex-start;
  padding:16px 0;border-top:1px solid var(--line);font-size:15.5px;color:var(--ink-2);
}
.checklist li:last-child{border-bottom:1px solid var(--line)}
.check-box{
  flex:none;width:20px;height:20px;border-radius:4px;border:1px solid var(--brand);
  display:grid;place-items:center;margin-top:4px;color:var(--brand);font-size:12px;
}
.checklist strong{color:var(--ink);font-weight:600}

/* ---------- Note band ---------- */
.note-band{
  border:1px solid var(--line);border-left:3px solid var(--accent);
  background:var(--surface);border-radius:var(--radius-card);
  padding:26px 30px;display:flex;flex-wrap:wrap;gap:16px 32px;align-items:center;justify-content:space-between;
  box-shadow:var(--shadow-1);
}
.note-band p{color:var(--ink-2);font-size:15.5px;max-width:720px}
.note-band p strong{color:var(--ink)}

/* ---------- FAQ ---------- */
.faq{border-top:1px solid var(--line);margin-top:12px}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:24px 0;font-family:var(--font-serif);font-size:19px;font-weight:600;color:var(--ink);
  min-height:44px;transition:color .2s var(--ease);
}
.faq summary::-webkit-details-marker{display:none}
.faq summary:hover{color:var(--brand)}
.faq .sign{
  flex:none;width:30px;height:30px;border-radius:50%;border:1px solid var(--line);
  display:grid;place-items:center;font-family:var(--font-sans);font-size:17px;color:var(--brand);
  transition:background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.faq details[open] .sign{background:var(--brand-soft);border-color:var(--brand-soft);color:var(--brand-deep)}
.faq details[open] .sign::after{content:"−"}
.faq details:not([open]) .sign::after{content:"+"}
.faq .answer{padding:0 60px 26px 0;color:var(--ink-2);font-size:15.8px}
.faq .answer p+p{margin-top:12px}

/* ---------- CTA / Form ---------- */
.cta-section{background:var(--brand-deep);color:#fff}
.cta-section h2{color:#fff}
.cta-grid{display:grid;grid-template-columns:1fr 460px;gap:64px;align-items:start}
.cta-copy p{color:rgba(255,255,255,.76);font-size:16px;margin-top:18px;max-width:460px}
.cta-points{margin-top:30px;display:grid;gap:14px}
.cta-points li{display:flex;gap:12px;align-items:flex-start;color:rgba(255,255,255,.86);font-size:15.5px}
.cta-points li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);flex:none;margin-top:10px}
.form-card{
  background:var(--surface);color:var(--ink);border-radius:var(--radius-card);
  padding:32px;box-shadow:var(--shadow-2);
}
.form-card h3{font-size:21px;margin-bottom:6px}
.form-card .form-hint{font-size:13.5px;color:var(--muted);margin-bottom:22px}
.field{margin-bottom:18px}
.field label{display:block;font-size:14px;color:var(--ink-2);margin-bottom:8px}
.field .req{color:var(--accent)}
.field input,.field textarea{
  width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:var(--radius-btn);
  background:var(--paper);font-size:15px;line-height:1.6;transition:border-color .2s var(--ease),background .2s var(--ease);
}
.field textarea{min-height:104px;resize:vertical}
.field input:hover,.field textarea:hover{border-color:#cfc8bb}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);background:var(--surface);
  box-shadow:0 0 0 3px rgba(47,93,87,.12);
}
.form-card .btn{width:100%}
.privacy-line{font-size:12.8px;color:var(--muted);margin-top:14px;line-height:1.7}
.privacy-line a{text-decoration:underline;text-underline-offset:2px}
.form-feedback{
  display:none;margin-top:14px;padding:12px 14px;border-radius:var(--radius-btn);
  background:var(--brand-soft);color:var(--brand-deep);font-size:14px;
}
.form-feedback.is-visible{display:block}

/* ---------- Related links ---------- */
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.related-card{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px 24px;min-height:96px;color:var(--ink);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.related-card:hover{transform:translateY(-2px);border-color:var(--brand);color:var(--ink);box-shadow:var(--shadow-2)}
.related-card .rc-title{font-family:var(--font-serif);font-size:18px;font-weight:600}
.related-card .rc-sub{display:block;font-size:13px;color:var(--muted);margin-top:6px;font-family:var(--font-sans);font-weight:400}
.related-card .arrow{color:var(--brand);flex:none;font-size:18px;transition:transform .22s var(--ease)}
.related-card:hover .arrow{transform:translateX(4px)}

/* ---------- Footer ---------- */
.site-footer{background:var(--brand-deep);color:rgba(255,255,255,.78);padding-top:72px}
.footer-top{
  display:grid;grid-template-columns:1.1fr 2fr;gap:56px;
  padding-bottom:56px;border-bottom:1px solid rgba(255,255,255,.14);
}
.footer-brand .brand-text{color:#fff}
.footer-brand .brand-mark{background:rgba(255,255,255,.14);color:#fff}
.footer-brand p{margin-top:16px;font-size:14.5px;color:rgba(255,255,255,.66);max-width:260px}
.footer-cols{display:grid;grid-template-columns:repeat(3,1fr);gap:32px}
.footer-col h4{
  font-family:var(--font-sans);font-size:13px;letter-spacing:.12em;color:rgba(255,255,255,.55);
  font-weight:500;margin-bottom:16px;text-transform:uppercase;
}
.footer-col ul{display:grid;gap:10px}
.footer-col a,.footer-col span{color:rgba(255,255,255,.78);font-size:14.5px}
.footer-col a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  padding:24px 40px 28px;font-size:13px;color:rgba(255,255,255,.6);
}
.footer-bottom a{color:rgba(255,255,255,.6)}
.footer-bottom a:hover{color:#fff}
.footer-bottom .sep{margin:0 8px;color:rgba(255,255,255,.3)}

/* ---------- Mobile bottom tab ---------- */
.mobile-tab{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:120;
  background:rgba(247,245,241,.97);border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
  backdrop-filter:blur(10px);
}
.mobile-tab ul{display:grid;grid-template-columns:repeat(5,1fr)}
.mobile-tab a{
  position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  height:60px;font-size:11.5px;color:var(--muted);letter-spacing:.02em;
}
.mobile-tab a svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.mobile-tab a.active{color:var(--brand);font-weight:600}
.mobile-tab a.active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:24px;height:2px;background:var(--brand);border-radius:2px;
}

/* ---------- Responsive ---------- */
@media (max-width:1199px){
  .container{padding:0 32px}
  .hero h1{font-size:44px}
  .cta-grid{grid-template-columns:1fr 420px;gap:48px}
}
@media (max-width:991px){
  :root{--nav-h:68px}
  .nav-links{display:none}
  .menu-toggle{display:flex}
  .header-cta{display:none}
  .container{padding:0 24px}
  .section{padding:72px 0}
  .hero-inner{padding:64px 0 60px}
  .hero h1{font-size:38px}
  h2.section-title{font-size:29px}
  .risk-list{grid-template-columns:1fr;gap:0}
  .split{grid-template-columns:1fr;gap:36px}
  .cta-grid{grid-template-columns:1fr;gap:36px}
  .related-grid{grid-template-columns:1fr}
  .footer-top{grid-template-columns:1fr;gap:40px}
  .footer-cols{grid-template-columns:repeat(2,1fr)}
  .footer-bottom{padding:22px 24px 26px}
}
@media (max-width:767px){
  body{padding-bottom:calc(60px + env(safe-area-inset-bottom))}
  .mobile-tab{display:block}
  .section{padding:56px 0}
  .hero-inner{padding:48px 0 52px}
  .hero h1{font-size:31px}
  .hero p.hero-sub{font-size:16px;margin-bottom:26px}
  .hero-actions{gap:10px}
  .btn{width:100%;padding:0 20px}
  .hero-actions .btn{width:100%}
  h2.section-title{font-size:25px}
  .section-lead{font-size:15.5px}
  .section-head{margin-bottom:34px}
  .risk-item{grid-template-columns:40px 1fr;gap:12px;padding:22px 0}
  .risk-item h3{font-size:18px}
  .step{grid-template-columns:40px 1fr;gap:18px}
  .step-dot{width:40px;height:40px;font-size:15px}
  .steps::before{left:19px}
  .step h3{font-size:18px;padding-top:4px}
  .faq summary{font-size:17px;padding:20px 0;gap:14px}
  .faq .answer{padding-right:0}
  .note-band{padding:22px}
  .form-card{padding:24px}
  .footer-cols{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .hero-facts{font-size:13px}
  .hero-facts li+li::before{display:none}
}
@media (max-width:480px){
  .container{padding:0 18px}
  .hero h1{font-size:27px}
  .brand-text{font-size:17px}
  .footer-bottom{padding:20px 18px 22px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important}
}

/* roulang page: category5 */
:root{
  --brand:#2F5D57;
  --brand-deep:#1F403C;
  --brand-soft:#E7EFEC;
  --accent:#C1663F;
  --paper:#F7F5F1;
  --tint:#EDE8DF;
  --surface:#FFFFFF;
  --ink:#14171A;
  --ink-2:#3D444B;
  --muted:#6E747C;
  --line:#E4DFD6;
  --radius-card:10px;
  --radius-btn:6px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(20,23,26,.05),0 8px 24px -16px rgba(20,23,26,.18);
  --shadow-2:0 2px 6px rgba(20,23,26,.06),0 16px 32px -20px rgba(20,23,26,.24);
  --ease:cubic-bezier(.2,.7,.2,1);
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --font-sans:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
}

*,*::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:16.5px;
  line-height:1.85;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--brand);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--brand-deep)}
h1,h2,h3,h4{font-family:var(--font-serif);font-weight:600;margin:0;line-height:1.28;letter-spacing:.01em}
p{margin:0 0 16px}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 40px;
}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(247,245,241,.94);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.site-header.is-scrolled{
  border-bottom-color:var(--line);
  box-shadow:0 6px 20px -18px rgba(20,23,26,.5);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:28px;
  height:72px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--ink);
  font-family:var(--font-serif);
  font-weight:700;
  font-size:19px;
  letter-spacing:.01em;
  flex:0 0 auto;
}
.brand:hover{color:var(--ink)}
.brand-mark{
  width:32px;height:32px;
  border-radius:8px;
  background:var(--brand);
  color:#fff;
  display:grid;place-items:center;
  font-size:15px;
  line-height:1;
  font-family:var(--font-serif);
}
.nav-links{
  display:flex;
  align-items:center;
  gap:2px;
  margin-left:auto;
}
.nav-links a{
  position:relative;
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:0 12px;
  font-size:15px;
  color:var(--ink-2);
  white-space:nowrap;
  transition:color .2s var(--ease);
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:8px;
  height:1px;
  background:var(--brand);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .24s var(--ease);
}
.nav-links a:hover{color:var(--brand)}
.nav-links a:hover::after,
.nav-links a.active::after{transform:scaleX(1)}
.nav-links a.active{color:var(--brand);font-weight:600}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:0 22px;
  border-radius:var(--radius-btn);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-deep);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;color:var(--brand);border-color:var(--brand)}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-deep);border-color:var(--brand-deep)}
.btn-block{width:100%}
.header-cta{margin-left:10px;flex:0 0 auto}

.menu-toggle{
  display:none;
  align-items:center;
  justify-content:center;
  width:44px;height:44px;
  margin-left:auto;
  border:1px solid var(--line);
  border-radius:var(--radius-btn);
  background:var(--surface);
  color:var(--ink);
  cursor:pointer;
}
.menu-toggle svg{width:20px;height:20px}

/* ---------- drawer ---------- */
.drawer{
  position:fixed;
  inset:0;
  z-index:90;
  display:none;
}
.drawer.is-open{display:block}
.drawer-mask{
  position:absolute;inset:0;
  background:rgba(20,23,26,.5);
  opacity:0;
  transition:opacity .22s var(--ease);
}
.drawer.is-open .drawer-mask{opacity:1}
.drawer-panel{
  position:absolute;
  top:0;right:0;bottom:0;
  width:min(320px,86vw);
  background:var(--paper);
  border-left:1px solid var(--line);
  padding:24px 24px calc(24px + env(safe-area-inset-bottom));
  display:flex;
  flex-direction:column;
  gap:8px;
  transform:translateX(100%);
  transition:transform .26s var(--ease);
  overflow-y:auto;
}
.drawer.is-open .drawer-panel{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-bottom:18px;border-bottom:1px solid var(--line);margin-bottom:8px}
.drawer-close{
  width:44px;height:44px;
  display:grid;place-items:center;
  border:1px solid var(--line);
  border-radius:var(--radius-btn);
  background:var(--surface);
  color:var(--ink);
  cursor:pointer;
  font-size:18px;
  line-height:1;
}
.drawer-panel a{
  display:flex;
  align-items:center;
  min-height:48px;
  padding:0 4px;
  color:var(--ink-2);
  font-size:16px;
  border-bottom:1px solid var(--line);
}
.drawer-panel a.active{color:var(--brand);font-weight:600}
.drawer-panel .btn{margin-top:18px}

/* ---------- hero ---------- */
.hero{
  position:relative;
  padding:76px 0 64px;
  border-bottom:1px solid var(--line);
  background-image:linear-gradient(rgba(247,245,241,.93),rgba(247,245,241,.9)),url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center;
  background-repeat:no-repeat;
}
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  letter-spacing:.04em;
  color:var(--muted);
  margin-bottom:28px;
}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:var(--line)}
.breadcrumb .current{color:var(--ink-2)}
.hero h1{
  font-size:clamp(30px,4.2vw,50px);
  line-height:1.18;
  letter-spacing:.01em;
  max-width:16em;
  margin:0 0 22px;
}
.hero-lead{
  font-size:17px;
  line-height:1.85;
  color:var(--ink-2);
  max-width:38em;
}
.hero-tags{
  display:flex;
  flex-wrap:wrap;
  gap:12px 28px;
  margin-top:34px;
  padding-top:26px;
  border-top:1px solid var(--line);
  font-size:13px;
  letter-spacing:.06em;
  color:var(--muted);
}
.hero-tags span{display:inline-flex;align-items:center;gap:8px}
.hero-tags span::before{
  content:"";
  width:5px;height:5px;
  border-radius:50%;
  background:var(--accent);
  flex:0 0 auto;
}

/* ---------- sections ---------- */
.section{padding:96px 0}
.section--tint{background:var(--tint)}
.section--tight{padding:72px 0}
.section-head{max-width:760px;margin-bottom:52px}
.eyebrow{
  display:block;
  font-size:13px;
  letter-spacing:.16em;
  color:var(--accent);
  margin-bottom:14px;
  font-weight:600;
}
.section-head h2{
  font-size:clamp(24px,3vw,36px);
  line-height:1.26;
  margin-bottom:18px;
}
.section-head p{color:var(--ink-2);max-width:44em}

/* ---------- steps ---------- */
.steps-layout{
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:64px;
  align-items:start;
}
.timeline{list-style:none;position:relative}
.timeline::before{
  content:"";
  position:absolute;
  left:15px;top:12px;bottom:12px;
  width:1px;
  background:var(--line);
}
.timeline li{
  position:relative;
  padding:0 0 40px 58px;
}
.timeline li:last-child{padding-bottom:0}
.step-num{
  position:absolute;
  left:0;top:0;
  width:32px;height:32px;
  border-radius:50%;
  background:var(--surface);
  border:1px solid var(--line);
  color:var(--accent);
  display:grid;place-items:center;
  font-size:13px;
  font-weight:700;
  font-feature-settings:"tnum";
  letter-spacing:.02em;
}
.timeline h3{
  font-size:21px;
  margin-bottom:10px;
}
.timeline p{
  color:var(--ink-2);
  margin-bottom:12px;
  max-width:34em;
}
.mini-list{list-style:none;display:flex;flex-direction:column;gap:8px}
.mini-list li{
  position:relative;
  padding-left:18px;
  font-size:15px;
  color:var(--muted);
}
.mini-list li::before{
  content:"";
  position:absolute;
  left:0;top:11px;
  width:7px;height:1px;
  background:var(--brand);
}
.side-figure{
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  background:var(--surface);
  box-shadow:var(--shadow-1);
}
.side-figure img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  transition:transform .28s var(--ease);
}
.side-figure:hover img{transform:scale(1.03)}
.side-figure figcaption{
  padding:16px 20px;
  font-size:13px;
  color:var(--muted);
  letter-spacing:.04em;
  border-top:1px solid var(--line);
}
.side-note{
  margin-top:24px;
  padding:24px;
  border-left:3px solid var(--brand);
  background:var(--brand-soft);
  border-radius:0 var(--radius-card) var(--radius-card) 0;
  font-size:15px;
  color:var(--brand-deep);
}

/* ---------- case cards ---------- */
.case-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:24px;
}
.card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:32px;
  transition:border-color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
}
.card:hover{
  border-color:var(--brand);
  transform:translateY(-2px);
  box-shadow:var(--shadow-2);
}
.card-tag{
  display:inline-block;
  padding:4px 12px;
  border-radius:var(--radius-pill);
  background:var(--brand-soft);
  color:var(--brand-deep);
  font-size:12px;
  letter-spacing:.08em;
  margin-bottom:18px;
}
.card h3{font-size:21px;margin-bottom:12px}
.card p{color:var(--ink-2);font-size:15.5px}
.card-wide{
  grid-column:1 / -1;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:40px;
  align-items:center;
}
.card-wide .card-body{max-width:36em}

/* ---------- channel list ---------- */
.channel-list{list-style:none;border-top:1px solid var(--line)}
.channel-list li{
  display:grid;
  grid-template-columns:160px 1fr auto;
  gap:28px;
  align-items:baseline;
  padding:26px 0;
  border-bottom:1px solid var(--line);
  transition:padding-left .22s var(--ease);
}
.channel-list li:hover{padding-left:8px}
.ch-name{
  font-family:var(--font-serif);
  font-size:20px;
  color:var(--ink);
  font-weight:600;
}
.ch-desc{color:var(--ink-2);font-size:15.5px}
.ch-val{color:var(--brand);font-weight:600;font-size:15px;white-space:nowrap}

/* ---------- related ---------- */
.related-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:20px;
  margin-top:44px;
}
.related-card{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:22px 24px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  color:var(--ink);
  font-weight:600;
  font-size:16px;
  transition:border-color .22s var(--ease),transform .22s var(--ease),color .22s var(--ease),box-shadow .22s var(--ease);
}
.related-card:hover{
  border-color:var(--brand);
  color:var(--brand);
  transform:translateY(-2px);
  box-shadow:var(--shadow-2);
}
.related-card .arrow{font-size:18px;line-height:1;color:var(--brand)}

/* ---------- faq ---------- */
.faq-list{
  border-top:1px solid var(--line);
  max-width:880px;
}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  padding:24px 0;
  background:none;
  border:0;
  text-align:left;
  font-size:17px;
  font-weight:600;
  color:var(--ink);
  cursor:pointer;
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--brand)}
.faq-icon{
  flex:0 0 auto;
  width:28px;height:28px;
  border-radius:50%;
  border:1px solid var(--line);
  display:grid;place-items:center;
  font-size:15px;
  color:var(--brand);
  transition:background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease),transform .24s var(--ease);
}
.faq-item.open .faq-icon{
  background:var(--brand);
  border-color:var(--brand);
  color:#fff;
  transform:rotate(180deg);
}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .3s var(--ease);
}
.faq-a p{
  padding:0 0 26px;
  color:var(--ink-2);
  font-size:15.5px;
  max-width:64ch;
}
.faq-item.open .faq-a{max-height:420px}

/* ---------- cta / form ---------- */
.cta-layout{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:64px;
  align-items:start;
}
.cta-copy h2{font-size:clamp(24px,3vw,36px);margin-bottom:20px}
.cta-copy p{color:var(--ink-2);margin-bottom:26px}
.check-list{list-style:none;display:flex;flex-direction:column;gap:14px}
.check-list li{
  position:relative;
  padding-left:28px;
  font-size:15.5px;
  color:var(--ink-2);
}
.check-list li::before{
  content:"";
  position:absolute;
  left:0;top:9px;
  width:12px;height:7px;
  border-left:2px solid var(--brand);
  border-bottom:2px solid var(--brand);
  transform:rotate(-45deg);
}
.form-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:34px;
  box-shadow:var(--shadow-1);
}
.form-card h3{font-size:20px;margin-bottom:6px}
.form-card .form-sub{font-size:14px;color:var(--muted);margin-bottom:24px}
.field{margin-bottom:18px}
.field label{
  display:block;
  font-size:13px;
  letter-spacing:.06em;
  color:var(--ink-2);
  margin-bottom:8px;
}
.field .req{color:var(--accent);margin-left:2px}
.field input,
.field textarea{
  width:100%;
  padding:12px 14px;
  font-family:inherit;
  font-size:15px;
  line-height:1.6;
  color:var(--ink);
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--radius-btn);
  transition:border-color .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease);
}
.field textarea{min-height:110px;resize:vertical}
.field input:hover,
.field textarea:hover{border-color:#cfc8bc}
.field input:focus,
.field textarea:focus{
  outline:none;
  border-color:var(--brand);
  background:var(--surface);
  box-shadow:0 0 0 3px rgba(47,93,87,.12);
}
.field input::placeholder,
.field textarea::placeholder{color:#a9a49b}
.form-note{
  margin-top:16px;
  font-size:12.5px;
  line-height:1.7;
  color:var(--muted);
}
.form-note a{text-decoration:underline;text-underline-offset:3px}

/* ---------- footer ---------- */
.site-footer{
  background:var(--brand-deep);
  color:#D9E2DF;
  padding-top:76px;
}
.footer-top{
  display:grid;
  grid-template-columns:1.05fr 2fr;
  gap:64px;
  padding-bottom:56px;
  border-bottom:1px solid rgba(255,255,255,.14);
}
.footer-brand .brand{color:#fff}
.footer-brand .brand-mark{background:rgba(255,255,255,.14);color:#fff}
.footer-brand p{
  margin-top:18px;
  font-size:14px;
  color:rgba(255,255,255,.66);
  max-width:20em;
  line-height:1.8;
}
.footer-cols{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:32px;
}
.footer-col h4{
  font-size:13px;
  letter-spacing:.12em;
  color:rgba(255,255,255,.5);
  margin-bottom:18px;
  font-weight:600;
  font-family:var(--font-sans);
}
.footer-col ul{list-style:none}
.footer-col li{
  margin-bottom:11px;
  font-size:14px;
  color:rgba(255,255,255,.78);
  line-height:1.7;
}
.footer-col a{color:rgba(255,255,255,.82)}
.footer-col a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  padding:24px 0 34px;
  font-size:13px;
  color:rgba(255,255,255,.55);
}
.footer-bottom p{margin:0}
.footer-bottom a{color:rgba(255,255,255,.72)}
.footer-bottom a:hover{color:#fff}
.footer-bottom .sep{margin:0 8px;color:rgba(255,255,255,.3)}

/* ---------- mobile tabbar ---------- */
.tabbar{
  display:none;
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:70;
  background:rgba(247,245,241,.97);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
  overflow-x:auto;
  scrollbar-width:none;
}
.tabbar::-webkit-scrollbar{display:none}
.tabbar a{
  flex:1 1 0;
  min-width:58px;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:4px;
  min-height:60px;
  padding:8px 4px;
  font-size:11px;
  color:var(--muted);
  position:relative;
  white-space:nowrap;
}
.tabbar a svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.tabbar a.active{color:var(--brand);font-weight:700}
.tabbar a.active::before{
  content:"";
  position:absolute;
  top:0;left:50%;
  transform:translateX(-50%);
  width:24px;height:2px;
  background:var(--brand);
  border-radius:0 0 2px 2px;
}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .container{padding:0 32px}
  .steps-layout{gap:48px}
  .cta-layout{gap:48px}
  .footer-top{gap:48px}
}
@media (max-width:991px){
  .container{padding:0 24px}
  .section{padding:76px 0}
  .hero{padding:60px 0 52px}
  .steps-layout{grid-template-columns:1fr;gap:40px}
  .case-grid{grid-template-columns:1fr}
  .card-wide{grid-template-columns:1fr;gap:24px}
  .cta-layout{grid-template-columns:1fr;gap:36px}
  .related-grid{grid-template-columns:1fr}
  .footer-top{grid-template-columns:1fr;gap:40px}
  .footer-cols{grid-template-columns:repeat(2,1fr);gap:32px}
  .nav-links{display:none}
  .header-cta{display:none}
  .menu-toggle{display:inline-flex}
}
@media (max-width:767px){
  body{padding-bottom:calc(64px + env(safe-area-inset-bottom))}
  .container{padding:0 18px}
  .section{padding:60px 0}
  .section--tight{padding:48px 0}
  .hero{padding:44px 0 40px}
  .hero h1{font-size:clamp(28px,7.4vw,34px)}
  .hero-lead{font-size:16px}
  .hero-tags{gap:10px 18px;font-size:12px;letter-spacing:.04em}
  .section-head{margin-bottom:34px}
  .card{padding:24px}
  .card h3{font-size:19px}
  .channel-list li{
    grid-template-columns:1fr;
    gap:8px;
    padding:22px 0;
  }
  .channel-list li:hover{padding-left:0}
  .ch-val{white-space:normal}
  .timeline li{padding:0 0 32px 50px}
  .timeline h3{font-size:19px}
  .form-card{padding:24px}
  .footer-cols{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .faq-q{font-size:16px;padding:20px 0;gap:16px}
  .tabbar{display:flex}
}
@media (max-width:480px){
  .brand{font-size:17px}
  .brand-mark{width:28px;height:28px;font-size:13px}
  .hero h1{font-size:28px}
  .btn{padding:0 18px}
  .card{padding:20px}
  .side-note{padding:18px}
  .tabbar a{font-size:10px;min-width:54px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important}
}