/* roulang page: index */
:root{
  --c-ink:#14181A;--c-ink-2:#3E4649;--c-mute:#767F82;--c-paper:#FAF7F2;--c-surface:#FFFFFF;--c-line:#E6E1D8;
  --c-primary:#0F6B5C;--c-primary-600:#0B5347;--c-primary-050:#E8F1EE;--c-accent:#D98A2B;--c-accent-050:#FBF0DF;--c-dark:#101716;
  --r-card:14px;--r-btn:10px;--r-pill:999px;--r-img:12px;
  --sh-1:0 1px 2px rgba(16,23,22,.05);--sh-2:0 10px 30px -16px rgba(16,23,22,.28);
  --ease:cubic-bezier(.2,.7,.2,1);
  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-serif:"Noto Serif SC","Songti SC","Source Han Serif SC",serif;
  --sec:72px;
}
@media (min-width:1024px){:root{--sec:112px}}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--c-paper);color:var(--c-ink);
  font-family:var(--font-sans);font-size:16px;line-height:1.85;
  font-variant-numeric:tabular-nums;letter-spacing:0;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
h1,h2,h3,h4{font-family:var(--font-serif);margin:0;line-height:1.2;font-weight:700}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:1024px){.container{padding:0 24px}}
.section{padding:var(--sec) 0}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:40px}
.section-title{font-size:clamp(26px,3.2vw,40px);letter-spacing:-.01em}
.section-desc{color:var(--c-ink-2);font-size:15px;max-width:56ch;margin-top:10px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.12em;color:var(--c-primary);background:var(--c-primary-050);border-radius:var(--r-pill);padding:5px 12px;font-family:var(--font-sans)}
.link-more{color:var(--c-primary);font-size:14px;position:relative;display:inline-flex;align-items:center;gap:6px;padding-bottom:2px}
.link-more::after{content:"";position:absolute;left:0;bottom:0;height:1px;width:0;background:var(--c-primary);transition:width .22s var(--ease)}
.link-more:hover::after{width:100%}
.link-more i{transition:transform .2s var(--ease)}
.link-more:hover i{transform:translateX(4px)}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:var(--r-btn);
  padding:13px 24px;font-size:15px;font-weight:600;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 i{transition:transform .2s var(--ease)}
.btn-primary{background:var(--c-primary);color:#fff}
.btn-primary:hover{background:var(--c-primary-600);box-shadow:var(--sh-2)}
.btn-primary:hover i{transform:translateX(4px)}
.btn-ghost{background:transparent;border-color:var(--c-ink);color:var(--c-ink)}
.btn-ghost:hover{background:var(--c-primary-050);border-color:var(--c-primary);color:var(--c-primary-600)}
.btn-sm{padding:9px 16px;font-size:13.5px}
.btn-block{width:100%}
.btn-light{background:#fff;color:var(--c-primary-600)}
.btn-light:hover{background:var(--c-primary-050)}

/* ---------- 徽章 / 标签 ---------- */
.badge{display:inline-flex;align-items:center;gap:6px;font-size:12px;padding:4px 10px;border-radius:6px;
  background:var(--c-primary-050);color:var(--c-primary);font-family:var(--font-sans);font-weight:600}
.badge-accent{background:var(--c-accent-050);color:var(--c-accent)}
.chip{display:inline-flex;align-items:center;gap:6px;font-size:13px;padding:7px 14px;border-radius:var(--r-pill);
  border:1px solid var(--c-line);background:var(--c-surface);color:var(--c-ink-2);transition:all .2s var(--ease);cursor:pointer}
.chip:hover{border-color:var(--c-primary);color:var(--c-primary);background:var(--c-primary-050)}
.chip.is-active{background:var(--c-primary);border-color:var(--c-primary);color:#fff}

/* ---------- Header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:rgba(250,247,242,.98)}
.site-header.is-scrolled{box-shadow:0 1px 0 var(--c-line)}
.brand-bar{border-bottom:1px solid transparent}
.site-header.is-scrolled .brand-bar{border-bottom-color:var(--c-line)}
.brand-inner{display:flex;align-items:center;gap:20px;height:64px}
.brand{display:flex;flex-direction:column;line-height:1.1;flex-shrink:0}
.brand-mark{font-family:var(--font-serif);font-size:20px;font-weight:700;letter-spacing:.01em;color:var(--c-ink)}
.brand-mark span{color:var(--c-primary)}
.brand-sub{font-size:11.5px;color:var(--c-mute);letter-spacing:.16em;margin-top:2px}
.search-box{flex:1;max-width:340px;display:flex;align-items:center;gap:10px;height:40px;padding:0 14px;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-pill);color:var(--c-mute)}
.search-box:focus-within{border-color:var(--c-primary);box-shadow:0 0 0 3px var(--c-primary-050)}
.search-box input{border:0;background:transparent;outline:0;width:100%;font-size:14px}
.brand-actions{display:flex;align-items:center;gap:14px;margin-left:auto}
.lang-switch{font-size:13px;color:var(--c-mute);cursor:pointer;transition:color .2s var(--ease);white-space:nowrap}
.lang-switch:hover{color:var(--c-primary)}
.nav-toggle{display:none;width:40px;height:40px;border:1px solid var(--c-line);background:var(--c-surface);
  border-radius:var(--r-btn);cursor:pointer;color:var(--c-ink)}
.channel-bar{border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);background:rgba(250,247,242,.98)}
.channel-inner{display:flex;align-items:center;gap:26px;height:44px;overflow-x:auto;scrollbar-width:none}
.channel-inner::-webkit-scrollbar{display:none}
.channel-link{position:relative;font-size:14px;color:var(--c-ink-2);white-space:nowrap;padding:12px 0;transition:color .2s var(--ease)}
.channel-link::after{content:"";position:absolute;left:0;right:0;bottom:6px;height:2px;background:var(--c-primary);transform:scaleX(0);transform-origin:left;transition:transform .22s var(--ease)}
.channel-link:hover{color:var(--c-primary)}
.channel-link:hover::after{transform:scaleX(1)}
.channel-link.is-active{color:var(--c-primary);font-weight:600}
.channel-link.is-active::after{transform:scaleX(1)}
.mobile-drawer{display:none;border-top:1px solid var(--c-line);background:var(--c-surface);padding:16px 0 22px}
.mobile-drawer.is-open{display:block}
.drawer-title{font-size:12px;color:var(--c-mute);letter-spacing:.12em;margin:12px 0 8px}
.drawer-links{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
.drawer-links a{font-size:14px;padding:10px 12px;border:1px solid var(--c-line);border-radius:var(--r-btn);background:var(--c-paper)}
.drawer-links a.is-active{border-color:var(--c-primary);color:var(--c-primary);background:var(--c-primary-050)}

/* ---------- Hero ---------- */
.hero{padding:56px 0 0}
.hero-grid{display:grid;grid-template-columns:1fr;gap:40px}
@media (min-width:1024px){.hero-grid{grid-template-columns:6fr 6fr;gap:48px;align-items:center}}
.hero h1{font-size:clamp(40px,6.2vw,72px);line-height:1.06;letter-spacing:-.02em}
.hero h1 em{font-style:normal;color:var(--c-primary)}
.hero-sub{margin-top:20px;font-size:17px;color:var(--c-ink-2);max-width:52ch}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.trust-row{display:flex;flex-wrap:wrap;gap:14px 28px;margin-top:32px;padding-top:24px;border-top:1px solid var(--c-line)}
.trust-item{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--c-ink-2)}
.trust-item i{color:var(--c-primary);font-size:14px}
.hero-visual{position:relative;border-radius:18px;overflow:hidden;min-height:320px;box-shadow:var(--sh-2)}
.hero-visual img{width:100%;height:100%;min-height:320px;object-fit:cover}
.hero-visual::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(16,23,22,.30),rgba(16,23,22,.45))}
.hero-grid-lines{position:absolute;inset:0;z-index:2;background-image:linear-gradient(to right,rgba(255,255,255,.06) 1px,transparent 1px),linear-gradient(to bottom,rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:48px 48px}
.hero-float{position:absolute;right:18px;bottom:18px;z-index:3;width:220px;background:#fff;border-radius:var(--r-card);
  padding:16px 18px;box-shadow:var(--sh-2)}
.hero-float .num{font-family:var(--font-serif);font-size:34px;color:var(--c-primary);line-height:1}
.hero-float p{font-size:13px;color:var(--c-mute);margin-top:6px}
.hero-caption{position:absolute;left:22px;top:22px;z-index:3;color:#fff;font-size:13px;letter-spacing:.08em}
.hero-highlight{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1px;background:var(--c-line);
  border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;margin-top:56px}
.hero-highlight div{background:var(--c-surface);padding:20px 22px}
.hero-highlight strong{display:block;font-family:var(--font-serif);font-size:22px;color:var(--c-primary)}
.hero-highlight span{font-size:13px;color:var(--c-mute)}

/* ---------- 三步上手 ---------- */
.steps{display:grid;grid-template-columns:1fr;gap:28px;position:relative}
@media (min-width:640px){.steps{grid-template-columns:repeat(3,minmax(0,1fr));gap:0}}
.step{padding:0 26px;position:relative}
.step::before{content:"";position:absolute;left:0;top:8px;bottom:8px;width:2px;background:var(--c-primary);border-radius:2px}
@media (min-width:640px){
  .step:first-child{padding-left:0}
  .step:first-child::before{display:none}
  .step:not(:first-child){border-left:1px dashed var(--c-line)}
}
.step-num{font-family:var(--font-serif);font-size:40px;color:rgba(15,107,92,.2);line-height:1}
.step h3{font-size:20px;margin-top:8px}
.step p{font-size:14.5px;color:var(--c-ink-2);margin-top:10px;max-width:34ch}

/* ---------- 案例证明 ---------- */
.proof-grid{display:grid;grid-template-columns:1fr;gap:24px}
@media (min-width:1024px){.proof-grid{grid-template-columns:7fr 5fr}}
.proof-main{position:relative;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--c-line);background:var(--c-surface);box-shadow:var(--sh-1)}
.proof-main img{width:100%;aspect-ratio:16/10;object-fit:cover}
.proof-main-body{padding:24px}
.proof-main-body h3{font-size:22px}
.proof-main-body p{font-size:14.5px;color:var(--c-ink-2);margin-top:10px}
.proof-stats{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1px;background:var(--c-line);border-top:1px solid var(--c-line)}
.proof-stats div{background:var(--c-surface);padding:18px 20px}
.proof-stats .val{font-family:var(--font-serif);font-size:30px;color:var(--c-primary);line-height:1.1}
.proof-stats .lbl{font-size:13px;color:var(--c-mute);margin-top:4px}
.proof-side{display:grid;gap:24px}
.proof-card{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);padding:24px;box-shadow:var(--sh-1);
  transition:border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease)}
.proof-card:hover{border-color:var(--c-primary);transform:translateY(-2px);box-shadow:var(--sh-2)}
.proof-card h4{font-size:18px;margin-top:14px}
.proof-card p{font-size:14px;color:var(--c-ink-2);margin-top:8px}
.proof-logo{width:44px;height:44px;border-radius:10px;background:var(--c-accent-050);color:var(--c-accent);
  display:flex;align-items:center;justify-content:center;font-size:18px}

/* ---------- 内容卡片 ---------- */
.card-grid{display:grid;grid-template-columns:1fr;gap:24px}
@media (min-width:640px){.card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1024px){.card-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
.card{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;
  display:flex;flex-direction:column;box-shadow:var(--sh-1);
  transition:border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease)}
.card:hover{border-color:var(--c-primary);transform:translateY(-2px);box-shadow:var(--sh-2)}
.card-cover{aspect-ratio:16/10;overflow:hidden;background:var(--c-primary-050)}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.card:hover .card-cover img{transform:scale(1.03)}
.card-body{padding:20px;display:flex;flex-direction:column;flex:1}
.card-body h3{font-size:18px;line-height:1.45;margin-top:12px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-body .excerpt{font-size:14px;color:var(--c-ink-2);margin-top:8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-meta{margin-top:16px;padding-top:14px;border-top:1px solid var(--c-line);display:flex;align-items:center;
  justify-content:space-between;font-size:13px;color:var(--c-mute)}
.card-meta a{color:var(--c-primary);display:inline-flex;align-items:center;gap:6px}
.card-meta a i{transition:transform .2s var(--ease)}
.card-meta a:hover i{transform:translateX(4px)}
.filter-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px}
.empty-state{height:240px;border:1px dashed var(--c-line);border-radius:var(--r-card);display:flex;flex-direction:column;
  align-items:center;justify-content:center;gap:10px;color:var(--c-mute);font-size:14.5px;background:rgba(255,255,255,.5)}
.empty-state a{color:var(--c-primary)}

/* ---------- 频道导览（分类） ---------- */
.channel-cards{display:grid;grid-template-columns:1fr;gap:20px}
@media (min-width:768px){.channel-cards{grid-template-columns:repeat(2,minmax(0,1fr))}}
.channel-card{display:flex;gap:18px;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:22px;box-shadow:var(--sh-1);transition:border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease)}
.channel-card:hover{border-color:var(--c-primary);transform:translateY(-2px);box-shadow:var(--sh-2)}
.channel-card i{color:var(--c-primary);font-size:20px;margin-top:4px}
.channel-card h3{font-size:18px}
.channel-card p{font-size:14px;color:var(--c-ink-2);margin-top:8px}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:1fr;gap:32px}
@media (min-width:1024px){.faq-grid{grid-template-columns:4fr 8fr;gap:48px}}
.faq-item{border-bottom:1px solid var(--c-line)}
.faq-q{width:100%;background:none;border:0;text-align:left;padding:20px 0;display:flex;align-items:center;
  justify-content:space-between;gap:18px;cursor:pointer;font-size:16.5px;font-weight:600;color:var(--c-ink)}
.faq-q:hover{color:var(--c-primary)}
.faq-q i{color:var(--c-primary);transition:transform .2s var(--ease);flex-shrink:0}
.faq-item.is-open .faq-q i{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s var(--ease)}
.faq-a p{max-width:60ch;padding:0 0 22px;color:var(--c-ink-2);font-size:15px}

/* ---------- CTA ---------- */
.cta-section{background:var(--c-dark);color:#fff;padding:64px 0}
@media (min-width:1024px){.cta-section{padding:96px 0}}
.cta-grid{display:grid;grid-template-columns:1fr;gap:40px}
@media (min-width:1024px){.cta-grid{grid-template-columns:6fr 6fr;gap:56px;align-items:center}}
.cta-section h2{font-size:clamp(26px,3.2vw,40px);color:#fff}
.cta-section p.lead{color:rgba(255,255,255,.75);font-size:15.5px;margin-top:14px;max-width:48ch}
.cta-list{margin-top:26px;display:grid;gap:12px}
.cta-list li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:rgba(255,255,255,.88)}
.cta-list i{color:var(--c-accent);margin-top:5px}
.form-card{background:#fff;border-radius:16px;padding:28px;box-shadow:var(--sh-2);color:var(--c-ink)}
.form-card h3{font-size:20px}
.form-card .hint{font-size:13.5px;color:var(--c-mute);margin-top:8px}
.field{margin-top:18px}
.field label{display:block;font-size:14px;font-weight:600;margin-bottom:6px}
.field input,.field textarea{width:100%;height:48px;padding:0 14px;border:1px solid var(--c-line);border-radius:var(--r-btn);
  background:var(--c-paper);outline:0;transition:border-color .2s var(--ease),box-shadow .2s var(--ease)}
.field textarea{height:96px;padding:12px 14px;resize:vertical;line-height:1.7}
.field input:focus,.field textarea:focus{border-color:var(--c-primary);box-shadow:0 0 0 3px var(--c-primary-050)}
.field-note{font-size:12px;color:var(--c-mute);margin-top:12px}

/* ---------- Footer ---------- */
.site-footer{background:var(--c-paper);border-top:1px solid var(--c-line);padding:56px 0 0}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px}
@media (min-width:768px){.footer-grid{grid-template-columns:2fr 1fr 1fr 1fr}}
.footer-brand{font-family:var(--font-serif);font-size:20px;font-weight:700}
.footer-brand span{color:var(--c-primary)}
.footer-desc{font-size:14px;color:var(--c-ink-2);margin-top:14px;max-width:40ch}
.footer-col h4{font-size:14px;color:var(--c-ink);margin-bottom:14px}
.footer-col a{display:block;font-size:14px;color:var(--c-ink-2);padding:5px 0;transition:color .2s var(--ease)}
.footer-col a:hover{color:var(--c-primary)}
.footer-bottom{margin-top:40px;border-top:1px solid var(--c-line);padding:20px 0;display:flex;flex-wrap:wrap;
  gap:10px 24px;justify-content:space-between;font-size:13px;color:var(--c-mute)}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .22s var(--ease),transform .22s var(--ease)}
.reveal.is-visible{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  *{transition:none !important;animation:none !important}
}
@media (max-width:1023px){
  .search-box{display:none}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
  .channel-bar{display:none}
  .hero{padding-top:36px}
}
@media (max-width:639px){
  .hero-float{width:170px;padding:12px 14px}
  .hero-float .num{font-size:26px}
  .hero-highlight{grid-template-columns:1fr}
  .proof-stats{grid-template-columns:1fr}
  .brand-sub{display:none}
}

/* roulang page: article */
:root{
  --c-ink:#14181A;--c-ink-2:#3E4649;--c-mute:#767F82;--c-paper:#FAF7F2;--c-surface:#FFFFFF;
  --c-line:#E6E1D8;--c-primary:#0F6B5C;--c-primary-600:#0B5347;--c-primary-050:#E8F1EE;
  --c-accent:#D98A2B;--c-accent-050:#FBF0DF;--c-dark:#101716;
  --r-card:14px;--r-btn:10px;--r-pill:999px;--r-img:12px;
  --sh-1:0 1px 2px rgba(16,23,22,.05);
  --sh-2:0 10px 30px -16px rgba(16,23,22,.28);
  --ease:cubic-bezier(.2,.7,.2,1);
  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-serif:"Noto Serif SC","Songti SC","Source Han Serif SC",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(--c-ink);background:var(--c-paper);
  font-variant-numeric:tabular-nums;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
h1,h2,h3,h4,p,figure,blockquote{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:1024px){.container{padding:0 24px}}
.serif{font-family:var(--font-serif)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.btn svg{transition:transform .2s var(--ease)}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:var(--sh-1)}
.btn-primary:hover{background:var(--c-primary-600);box-shadow:var(--sh-2)}
.btn-primary:hover svg{transform:translateX(4px)}
.btn-ghost{background:transparent;color:var(--c-ink);border-color:var(--c-ink)}
.btn-ghost:hover{background:var(--c-primary-050);border-color:var(--c-primary);color:var(--c-primary-600)}
.btn-accent{background:var(--c-accent);color:#fff}
.btn-accent:hover{background:#c0761f}
.btn-sm{height:38px;padding:0 16px;font-size:13px}
.btn-block{width:100%}

/* ---------- 头部 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:var(--c-surface);
  border-bottom:1px solid transparent;
  transition:background .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.site-header.is-scrolled{background:rgba(250,247,242,.98);border-bottom-color:var(--c-line);box-shadow:var(--sh-1)}
.topbar{height:64px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.brand{display:flex;align-items:center;font-family:var(--font-serif);font-size:22px;font-weight:700;letter-spacing:-.01em;color:var(--c-ink)}
.brand .brand-key{color:var(--c-primary)}
.brand-sub{
  font-family:var(--font-sans);font-size:12px;font-weight:500;color:var(--c-mute);
  margin-left:10px;padding-left:10px;border-left:1px solid var(--c-line);letter-spacing:.06em;
}
.top-actions{display:flex;align-items:center;gap:12px}
.search-box{
  display:flex;align-items:center;gap:8px;height:38px;padding:0 14px;
  border:1px solid var(--c-line);border-radius:var(--r-pill);background:var(--c-paper);color:var(--c-mute);
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.search-box:focus-within{border-color:var(--c-primary);background:#fff}
.search-box input{border:0;background:transparent;outline:none;width:130px;font-size:13px;color:var(--c-ink)}
.lang-btn{
  height:38px;padding:0 14px;border:1px solid var(--c-line);border-radius:var(--r-pill);
  background:transparent;font-size:13px;cursor:pointer;color:var(--c-ink-2);
  transition:border-color .2s var(--ease),color .2s var(--ease),background .2s var(--ease);
}
.lang-btn:hover{border-color:var(--c-primary);color:var(--c-primary);background:var(--c-primary-050)}
.menu-toggle{
  display:none;width:40px;height:38px;border:1px solid var(--c-line);border-radius:var(--r-btn);
  background:transparent;cursor:pointer;align-items:center;justify-content:center;
}
.menu-toggle:hover{border-color:var(--c-primary);color:var(--c-primary)}
.menu-toggle span{display:block;width:16px;height:2px;background:currentColor;position:relative}
.menu-toggle span::before,.menu-toggle span::after{content:"";position:absolute;left:0;width:16px;height:2px;background:currentColor}
.menu-toggle span::before{top:-5px}
.menu-toggle span::after{top:5px}

/* ---------- 频道行 ---------- */
.channel-bar{border-top:1px solid var(--c-line);background:transparent}
.channel-inner{display:flex;align-items:center;gap:28px;height:44px;overflow-x:auto;scrollbar-width:none}
.channel-inner::-webkit-scrollbar{display:none}
.channel-link{
  position:relative;font-size:14px;color:var(--c-ink-2);white-space:nowrap;padding:2px 0;
  transition:color .2s var(--ease);
}
.channel-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:2px;background:var(--c-primary);
  transform:scaleX(0);transform-origin:left;transition:transform .22s var(--ease);
}
.channel-link:hover{color:var(--c-primary)}
.channel-link:hover::after,.channel-link.is-active::after{transform:scaleX(1)}
.channel-link.is-active{color:var(--c-primary);font-weight:600}
.mobile-drawer{
  position:fixed;left:0;right:0;top:64px;bottom:0;z-index:55;background:var(--c-surface);
  padding:8px 20px 32px;overflow-y:auto;opacity:0;transform:translateY(-8px);pointer-events:none;
  transition:opacity .22s var(--ease),transform .22s var(--ease);
}
.mobile-drawer.is-open{opacity:1;transform:none;pointer-events:auto}
.mobile-drawer a{display:block;padding:15px 2px;font-size:15px;border-bottom:1px solid var(--c-line);color:var(--c-ink-2)}
.mobile-drawer a.is-active{color:var(--c-primary);font-weight:600}
.mobile-drawer .btn{margin-top:20px}

/* ---------- 主体与面包屑 ---------- */
.page-main{padding:32px 0 72px}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--c-mute)}
.breadcrumb a{transition:color .2s var(--ease)}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb .sep{color:#C9C2B6}

/* ---------- 文章头 ---------- */
.article-head{max-width:820px;margin:26px auto 0}
.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 10px;border-radius:6px;
  background:var(--c-primary-050);color:var(--c-primary);font-size:12px;font-weight:600;letter-spacing:.02em;
}
.badge-accent{background:var(--c-accent-050);color:#9A5F14}
.article-head h1{
  font-family:var(--font-serif);font-size:clamp(28px,4vw,42px);line-height:1.24;
  letter-spacing:-.02em;color:var(--c-ink);margin:16px 0 0;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 20px;margin-top:20px;padding-bottom:20px;
  border-bottom:1px solid var(--c-line);font-size:13px;color:var(--c-mute);
}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:#CFC8BB}
.article-cover{max-width:960px;margin:32px auto 0}
.article-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r-img);box-shadow:var(--sh-2)}
.article-cover figcaption{font-size:13px;color:var(--c-mute);text-align:center;margin-top:12px}

/* ---------- 正文排版 ---------- */
.article-body{max-width:720px;margin:44px auto 0;font-size:16px;line-height:1.9;color:var(--c-ink-2)}
.article-body>*:first-child{margin-top:0}
.article-body h2{
  font-family:var(--font-serif);font-size:22px;line-height:1.45;color:var(--c-ink);
  margin:32px 0 16px;letter-spacing:-.01em;
}
.article-body h3{font-size:18px;line-height:1.55;color:var(--c-ink);margin:26px 0 12px}
.article-body p{margin:0 0 1.2em}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.35em}
.article-body ul li{list-style:disc;margin:.4em 0}
.article-body ol li{list-style:decimal;margin:.4em 0}
.article-body strong{color:var(--c-ink)}
.article-body a{color:var(--c-primary);border-bottom:1px solid rgba(15,107,92,.28)}
.article-body a:hover{border-bottom-color:var(--c-primary)}
.article-body blockquote{
  margin:26px 0;padding:16px 22px;border-left:3px solid var(--c-primary);
  background:var(--c-primary-050);border-radius:0 var(--r-img) var(--r-img) 0;color:var(--c-ink-2);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--r-img);margin:26px auto}
.article-body figure{margin:26px 0}
.article-body figcaption{font-size:13px;color:var(--c-mute);text-align:center;margin-top:10px}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;margin:0 0 1.2em;display:block;overflow-x:auto}
.article-body th,.article-body td{border:1px solid var(--c-line);padding:10px 14px;text-align:left;white-space:nowrap}
.article-body th{background:var(--c-primary-050);color:var(--c-ink);font-weight:600}
.article-body hr{border:0;border-top:1px solid var(--c-line);margin:32px 0}

/* ---------- 空态 ---------- */
.empty-state{
  max-width:720px;margin:44px auto 0;min-height:240px;border:1px dashed var(--c-line);border-radius:var(--r-card);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;
  text-align:center;padding:40px 24px;background:var(--c-surface);
}
.empty-state h2{font-family:var(--font-serif);font-size:22px;color:var(--c-ink)}
.empty-state p{font-size:14px;color:var(--c-mute);max-width:44ch}

/* ---------- 标签与操作 ---------- */
.article-foot{max-width:720px;margin:44px auto 0;display:flex;flex-wrap:wrap;gap:20px;align-items:center;justify-content:space-between;padding-top:24px;border-top:1px solid var(--c-line)}
.tag-row{display:flex;flex-wrap:wrap;gap:8px}
.tag{
  display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:6px;
  background:var(--c-primary-050);color:var(--c-primary);font-size:12px;font-weight:500;
  transition:background .2s var(--ease),color .2s var(--ease);
}
.tag:hover{background:var(--c-primary);color:#fff}
.tag-hint{background:var(--c-accent-050);color:#9A5F14}
.tag-hint:hover{background:var(--c-accent);color:#fff}
.action-row{display:flex;align-items:center;gap:10px}
.icon-btn{
  display:inline-flex;align-items:center;gap:8px;height:38px;padding:0 14px;border-radius:var(--r-btn);
  border:1px solid var(--c-line);background:var(--c-surface);font-size:13px;color:var(--c-ink-2);cursor:pointer;
  transition:border-color .2s var(--ease),color .2s var(--ease),background .2s var(--ease),transform .2s var(--ease);
}
.icon-btn:hover{border-color:var(--c-primary);color:var(--c-primary);background:var(--c-primary-050)}
.icon-btn:active{transform:translateY(1px)}
.icon-btn svg{width:16px;height:16px}

/* ---------- 相关推荐 ---------- */
.related{margin-top:72px;padding-top:48px;border-top:1px solid var(--c-line)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px}
.section-head h2{font-family:var(--font-serif);font-size:clamp(22px,2.6vw,30px);line-height:1.3;color:var(--c-ink);letter-spacing:-.01em}
.section-head p{margin-top:8px;font-size:14px;color:var(--c-mute);max-width:56ch}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--c-primary);white-space:nowrap}
.link-arrow::after{
  content:"";position:absolute;left:0;right:0;bottom:-3px;height:1px;background:var(--c-primary);
  transform:scaleX(0);transform-origin:left;transition:transform .22s var(--ease);
}
.link-arrow{position:relative;padding-bottom:3px}
.link-arrow:hover::after{transform:scaleX(1)}
.link-arrow svg{transition:transform .2s var(--ease)}
.link-arrow:hover svg{transform:translateX(4px)}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{
  display:flex;flex-direction:column;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);
  transition:border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.card:hover{border-color:var(--c-primary);transform:translateY(-2px);box-shadow:var(--sh-2)}
.card-cover{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--c-primary-050)}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.card:hover .card-cover img{transform:scale(1.03)}
.card-body{padding:20px;display:flex;flex-direction:column;flex:1}
.card-body h3{font-size:17px;line-height:1.5;color:var(--c-ink);margin:10px 0 0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-body p{margin:8px 0 16px;font-size:14px;line-height:1.75;color:var(--c-mute);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--c-mute);padding-top:14px;border-top:1px solid var(--c-line)}
.card-foot .go{display:inline-flex;align-items:center;gap:6px;color:var(--c-primary);font-weight:600}
.card-foot .go svg{transition:transform .2s var(--ease)}
.card:hover .card-foot .go svg{transform:translateX(4px)}
.back-row{margin-top:40px;text-align:center}

/* ---------- CTA ---------- */
.cta-band{background:var(--c-dark);color:#fff;padding:64px 0;margin-top:72px}
.cta-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px}
.cta-copy h2{font-family:var(--font-serif);font-size:clamp(22px,2.8vw,32px);line-height:1.3;letter-spacing:-.01em}
.cta-copy p{margin-top:12px;font-size:15px;color:rgba(255,255,255,.72);max-width:54ch}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
.cta-actions .btn-ghost{color:#fff;border-color:rgba(255,255,255,.5)}
.cta-actions .btn-ghost:hover{background:rgba(255,255,255,.12);border-color:#fff;color:#fff}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-paper);border-top:1px solid var(--c-line);padding:56px 0 24px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px}
.footer-brand{font-family:var(--font-serif);font-size:20px;font-weight:700;color:var(--c-ink)}
.footer-brand span{color:var(--c-primary)}
.footer-desc{margin-top:14px;font-size:13px;line-height:1.85;color:var(--c-mute);max-width:34ch}
.footer-col h4{font-size:13px;font-weight:600;color:var(--c-ink);letter-spacing:.04em;margin-bottom:14px}
.footer-col a{display:block;font-size:13px;color:var(--c-mute);padding:5px 0;transition:color .2s var(--ease)}
.footer-col a:hover{color:var(--c-primary)}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid var(--c-line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:12px;color:var(--c-mute);
}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .22s var(--ease),transform .22s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .channel-bar{display:none}
  .menu-toggle{display:inline-flex}
  .search-box{display:none}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:640px){
  .page-main{padding:24px 0 56px}
  .article-head{margin-top:20px}
  .article-body{margin-top:32px}
  .card-grid{grid-template-columns:1fr}
  .cta-band{padding:56px 0;margin-top:56px}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1}
  .footer-grid{grid-template-columns:1fr}
  .article-foot{flex-direction:column;align-items:flex-start}
  .brand{font-size:19px}
  .brand-sub{display:none}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category1 */
:root{
  --c-ink:#14181A;--c-ink-2:#3E4649;--c-mute:#767F82;
  --c-paper:#FAF7F2;--c-surface:#FFFFFF;--c-line:#E6E1D8;
  --c-primary:#0F6B5C;--c-primary-600:#0B5347;--c-primary-050:#E8F1EE;
  --c-accent:#D98A2B;--c-accent-050:#FBF0DF;--c-dark:#101716;
  --r-card:14px;--r-btn:10px;--r-pill:999px;--r-img:12px;
  --sh-1:0 1px 2px rgba(16,23,22,.05);
  --sh-2:0 10px 30px -16px rgba(16,23,22,.28);
  --ease:cubic-bezier(.2,.7,.2,1);
  --font-sans:PingFang SC,Hiragino Sans GB,Microsoft YaHei,system-ui,sans-serif;
  --font-serif:Noto Serif SC,Songti SC,Source Han Serif SC,serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--font-sans);font-size:16px;line-height:1.85;color:var(--c-ink);background:var(--c-paper);-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input{font-family:inherit;font-size:inherit}
h1,h2,h3,h4{margin:0;line-height:1.25;font-weight:700;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
strong{font-weight:700}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:1024px){.container{padding:0 24px}}
.num{font-variant-numeric:tabular-nums}

/* ============ 品牌行 ============ */
.site-header{position:relative;z-index:60}
.brand-bar{background:var(--c-surface);border-bottom:1px solid var(--c-line)}
.brand-inner{display:flex;align-items:center;justify-content:space-between;height:64px;gap:16px}
.brand{display:flex;align-items:baseline;gap:8px;min-width:0}
.brand-mark{font-family:var(--font-serif);font-size:23px;font-weight:700;letter-spacing:-.02em;color:var(--c-ink);white-space:nowrap}
.brand-mark-accent{color:var(--c-primary)}
.brand-sub{font-size:12px;color:var(--c-mute);letter-spacing:.14em;white-space:nowrap}
.brand-tools{display:flex;align-items:center;gap:12px}
.search-box{position:relative;display:flex;align-items:center}
.search-box input{width:210px;height:38px;padding:0 36px 0 14px;border:1px solid var(--c-line);border-radius:var(--r-pill);background:var(--c-paper);color:var(--c-ink);outline:none;transition:border-color .2s var(--ease),box-shadow .2s var(--ease)}
.search-box input::placeholder{color:var(--c-mute);font-size:14px}
.search-box input:focus{border-color:var(--c-primary);box-shadow:0 0 0 3px var(--c-primary-050);background:var(--c-surface)}
.search-box i{position:absolute;right:14px;color:var(--c-mute);font-size:13px;pointer-events:none}
.lang-switch{display:flex;border:1px solid var(--c-line);border-radius:var(--r-pill);overflow:hidden}
.lang-switch button{border:0;background:transparent;padding:7px 12px;font-size:13px;color:var(--c-ink-2);cursor:pointer;transition:background .2s var(--ease),color .2s var(--ease)}
.lang-switch button.is-on{background:var(--c-primary-050);color:var(--c-primary);font-weight:700}
.lang-switch button:hover{background:var(--c-primary-050)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:var(--r-btn);font-weight:700;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(--c-primary);color:#fff}
.btn-primary:hover{background:var(--c-primary-600);box-shadow:var(--sh-2)}
.btn-primary:hover i{transform:translateX(4px)}
.btn-primary i{transition:transform .2s var(--ease)}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn-lg{height:52px;padding:0 26px;font-size:16px}
.nav-toggle{display:none;width:38px;height:38px;border:1px solid var(--c-line);border-radius:var(--r-btn);background:var(--c-surface);color:var(--c-ink);cursor:pointer;align-items:center;justify-content:center}

/* ============ 频道行 ============ */
.channel-bar{position:sticky;top:0;z-index:50;background:rgba(250,247,242,.98);border-bottom:1px solid transparent;transition:border-color .2s var(--ease),box-shadow .2s var(--ease)}
.channel-bar.is-stuck{border-bottom-color:var(--c-line);box-shadow:0 6px 18px -18px rgba(16,23,22,.5)}
.channel-inner{display:flex;align-items:center;gap:26px;height:44px;overflow-x:auto;scrollbar-width:none}
.channel-inner::-webkit-scrollbar{display:none}
.channel-link{position:relative;font-size:14px;color:var(--c-ink-2);white-space:nowrap;padding:12px 0;transition:color .2s var(--ease)}
.channel-link::after{content:"";position:absolute;left:0;right:0;bottom:4px;height:2px;background:var(--c-primary);transform:scaleX(0);transform-origin:left;transition:transform .22s var(--ease)}
.channel-link:hover{color:var(--c-primary)}
.channel-link:hover::after{transform:scaleX(1)}
.channel-link.is-active{color:var(--c-primary);font-weight:700}
.channel-link.is-active::after{transform:scaleX(1)}
.channel-drawer{display:none;border-bottom:1px solid var(--c-line);background:var(--c-surface)}
.channel-drawer.is-open{display:block}
.channel-drawer .container{display:flex;flex-direction:column;padding-top:8px;padding-bottom:14px}
.channel-drawer a{padding:11px 0;font-size:15px;color:var(--c-ink-2);border-bottom:1px solid var(--c-line)}
.channel-drawer a:last-child{border-bottom:0}
.channel-drawer a.is-active{color:var(--c-primary);font-weight:700}
@media (max-width:1023px){
  .channel-bar{display:none}
  .nav-toggle{display:inline-flex}
  .search-box,.lang-switch{display:none}
}

/* ============ 通用板块 ============ */
.section{padding:56px 0}
@media (min-width:1024px){.section{padding:88px 0}}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px;flex-wrap:wrap}
.sec-title{font-family:var(--font-serif);font-size:clamp(24px,3vw,34px);letter-spacing:-.02em}
.sec-desc{margin-top:10px;color:var(--c-mute);font-size:15px;max-width:62ch}
.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:6px;background:var(--c-primary-050);color:var(--c-primary);font-size:12px;font-weight:700;letter-spacing:.02em}
.badge-accent{background:var(--c-accent-050);color:#A5641B}
.link-more{color:var(--c-primary);font-weight:700;font-size:14px;display:inline-flex;align-items:center;gap:6px}
.link-more span{position:relative}
.link-more span::after{content:"";position:absolute;left:0;right:0;bottom:-3px;height:1px;background:var(--c-primary);transform:scaleX(0);transform-origin:left;transition:transform .22s var(--ease)}
.link-more:hover span::after{transform:scaleX(1)}
.link-more:hover i{transform:translateX(4px)}
.link-more i{transition:transform .22s var(--ease)}

/* ============ 面包屑 ============ */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:rgba(255,255,255,.72)}
.crumb a{color:rgba(255,255,255,.86)}
.crumb a:hover{color:#fff;text-decoration:underline}
.crumb i{font-size:10px;opacity:.6}

/* ============ 页面头部 ============ */
.page-hero{position:relative;background-image:linear-gradient(rgba(16,23,22,.88),rgba(16,23,22,.9)),url('/assets/images/backpic/back-1.webp');background-size:cover;background-position:center;color:#fff;padding:52px 0 60px;overflow:hidden}
.page-hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);background-size:48px 48px;pointer-events:none}
.page-hero .container{position:relative;z-index:2}
.page-hero h1{margin-top:22px;font-family:var(--font-serif);font-size:clamp(32px,4.6vw,52px);line-height:1.14;letter-spacing:-.02em;max-width:22ch}
.page-hero .lead{margin-top:20px;max-width:70ch;font-size:16px;line-height:1.9;color:rgba(255,255,255,.82)}
.hero-tags{margin-top:28px;display:flex;flex-wrap:wrap;gap:10px}
.hero-tag{display:inline-flex;align-items:center;gap:8px;padding:8px 14px;border:1px solid rgba(255,255,255,.2);border-radius:var(--r-pill);font-size:13px;color:rgba(255,255,255,.9)}
.hero-tag i{color:#8FD6C7}

/* ============ 左目录 + 右长文 ============ */
.doc-layout{display:grid;grid-template-columns:250px minmax(0,1fr);gap:48px;align-items:start}
@media (max-width:1023px){.doc-layout{grid-template-columns:1fr;gap:28px}}
.toc{position:sticky;top:76px;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);padding:22px;box-shadow:var(--sh-1)}
@media (max-width:1023px){.toc{position:static}}
.toc-title{font-size:13px;letter-spacing:.14em;color:var(--c-mute);text-transform:uppercase}
.toc-list{margin-top:14px;border-top:1px solid var(--c-line)}
.toc-link{display:flex;gap:10px;align-items:baseline;padding:12px 0;border-bottom:1px solid var(--c-line);font-size:14px;color:var(--c-ink-2);border-left:2px solid transparent;padding-left:10px;transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease)}
.toc-link em{font-style:normal;font-family:var(--font-serif);color:var(--c-primary);opacity:.5;font-size:13px}
.toc-link:hover{color:var(--c-primary);border-left-color:var(--c-primary);background:var(--c-primary-050)}
.toc-note{margin-top:18px;font-size:13px;color:var(--c-mute);line-height:1.75}

.doc-stack{display:flex;flex-direction:column;gap:24px}
.doc-card{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);padding:28px;box-shadow:var(--sh-1);transition:border-color .2s var(--ease),box-shadow .2s var(--ease),transform .2s var(--ease)}
.doc-card:hover{border-color:var(--c-primary);box-shadow:var(--sh-2);transform:translateY(-2px)}
@media (min-width:768px){.doc-card{padding:36px}}
.doc-card h2{font-family:var(--font-serif);font-size:clamp(21px,2.4vw,26px);display:flex;gap:14px;align-items:baseline}
.doc-card h2 .idx{font-family:var(--font-serif);font-size:15px;color:var(--c-primary);opacity:.55}
.doc-card p{margin-top:16px;color:var(--c-ink-2);line-height:1.9}
.doc-card .lead-line{margin-top:14px;color:var(--c-ink);font-weight:700}
.check-list{margin-top:20px;display:grid;gap:12px}
.check-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--c-ink-2);background:var(--c-paper);border:1px solid var(--c-line);border-radius:var(--r-img);padding:14px 16px}
.check-list li i{color:var(--c-primary);margin-top:4px;font-size:14px}
.check-list li b{color:var(--c-ink);font-weight:700}
.doc-figure{margin-top:22px;border-radius:var(--r-img);overflow:hidden;position:relative;border:1px solid var(--c-line)}
.doc-figure img{width:100%;aspect-ratio:16/9;object-fit:cover}
.doc-figure figcaption{position:absolute;left:0;right:0;bottom:0;padding:26px 18px 14px;font-size:13px;color:rgba(255,255,255,.92);background:linear-gradient(transparent,rgba(16,23,22,.82))}
.scene-grid{margin-top:20px;display:grid;gap:14px;grid-template-columns:repeat(3,minmax(0,1fr))}
@media (max-width:767px){.scene-grid{grid-template-columns:1fr}}
.scene{border:1px solid var(--c-line);border-radius:var(--r-img);padding:18px;background:var(--c-paper)}
.scene h3{font-size:16px;display:flex;align-items:center;gap:8px}
.scene h3 i{color:var(--c-accent);font-size:14px}
.scene p{margin-top:8px;font-size:14px;color:var(--c-mute);line-height:1.75}
.step-line{margin-top:20px;border-left:1px dashed var(--c-line);padding-left:20px;display:grid;gap:18px}
.step-line .item{position:relative}
.step-line .item::before{content:"";position:absolute;left:-26px;top:8px;width:10px;height:10px;border-radius:50%;background:var(--c-surface);border:2px solid var(--c-primary)}
.step-line .item h4{font-size:16px}
.step-line .item p{margin-top:6px;font-size:14px;color:var(--c-mute)}

/* ============ 问答 ============ */
.qa-grid{display:grid;gap:20px;grid-template-columns:repeat(2,minmax(0,1fr))}
@media (max-width:767px){.qa-grid{grid-template-columns:1fr}}
.qa-item{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);padding:24px;transition:border-color .2s var(--ease),box-shadow .2s var(--ease),transform .2s var(--ease)}
.qa-item:hover{border-color:var(--c-primary);box-shadow:var(--sh-2);transform:translateY(-2px)}
.qa-item h3{font-size:17px;display:flex;gap:10px;align-items:baseline}
.qa-item h3 i{color:var(--c-primary);font-size:14px}
.qa-item p{margin-top:12px;color:var(--c-mute);font-size:14.5px;line-height:1.85}

/* ============ 窄版 CTA ============ */
.cta-narrow{background:var(--c-dark);color:#fff;border-radius:var(--r-card);padding:40px 28px;display:flex;gap:26px;align-items:center;justify-content:space-between;flex-wrap:wrap}
@media (min-width:1024px){.cta-narrow{padding:56px 48px}}
.cta-narrow h2{font-family:var(--font-serif);font-size:clamp(22px,2.8vw,30px);max-width:24ch}
.cta-narrow p{margin-top:12px;color:rgba(255,255,255,.74);font-size:15px;max-width:56ch}
.btn-light{background:#fff;color:var(--c-dark);height:50px;padding:0 24px;border-radius:var(--r-btn);font-size:15px}
.btn-light:hover{background:var(--c-primary-050);color:var(--c-primary-600)}
.btn-light:hover i{transform:translateX(4px)}
.btn-light i{transition:transform .2s var(--ease)}
.btn-ghost{background:transparent;color:var(--c-ink);border-color:var(--c-ink)}
.btn-ghost:hover{background:var(--c-primary-050);border-color:var(--c-primary);color:var(--c-primary-600)}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-paper);border-top:1px solid var(--c-line);padding:56px 0 24px;margin-top:64px}
.footer-grid{display:grid;gap:32px;grid-template-columns:1.4fr 1fr 1fr 1fr}
@media (max-width:1023px){.footer-grid{grid-template-columns:1fr 1fr}}
@media (max-width:639px){.footer-grid{grid-template-columns:1fr}}
.footer-brand{font-family:var(--font-serif);font-size:22px;font-weight:700}
.footer-brand span{color:var(--c-primary)}
.footer-desc{margin-top:12px;font-size:14px;color:var(--c-mute);max-width:40ch;line-height:1.85}
.footer-col h4{font-size:14px;letter-spacing:.06em;color:var(--c-ink);margin-bottom:14px}
.footer-col a{display:block;font-size:14px;color:var(--c-mute);padding:6px 0;transition:color .2s var(--ease),padding-left .2s var(--ease)}
.footer-col a:hover{color:var(--c-primary);padding-left:4px}
.footer-bottom{margin-top:40px;padding-top:18px;border-top:1px solid var(--c-line);display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:13px;color:var(--c-mute)}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .4s var(--ease),transform .4s var(--ease)}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  *{transition:none!important;animation:none!important}
}

/* roulang page: category3 */
:root{
  --c-ink:#14181A;
  --c-ink-2:#3E4649;
  --c-mute:#767F82;
  --c-paper:#FAF7F2;
  --c-surface:#FFFFFF;
  --c-line:#E6E1D8;
  --c-primary:#0F6B5C;
  --c-primary-600:#0B5347;
  --c-primary-050:#E8F1EE;
  --c-accent:#D98A2B;
  --c-accent-050:#FBF0DF;
  --c-dark:#101716;
  --r-card:14px;
  --r-btn:10px;
  --r-pill:999px;
  --r-img:12px;
  --sh-1:0 1px 2px rgba(16,23,22,.05);
  --sh-2:0 10px 30px -16px rgba(16,23,22,.28);
  --ease:cubic-bezier(.2,.7,.2,1);
  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-serif:"Noto Serif SC","Songti SC","Source Han Serif SC",Georgia,serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--c-paper);
  color:var(--c-ink);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0}
h1,h2,h3,h4{font-weight:700;line-height:1.2}
ul,ol{list-style:none}
img{max-width:100%;display:block;border-style:none}
a{color:var(--c-primary);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--c-primary-600)}
button,input,select,textarea{font:inherit;color:inherit;margin:0}
button{background:none;border:none;cursor:pointer}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
@media(min-width:1024px){.container{padding-left:24px;padding-right:24px}}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(250,247,242,.98);
  border-bottom:1px solid transparent;
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.site-header.is-stuck{border-bottom-color:var(--c-line);box-shadow:0 6px 20px -18px rgba(16,23,22,.4)}
.brand-row{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:64px}
.brand{display:flex;align-items:baseline;gap:10px;color:var(--c-ink);white-space:nowrap}
.brand:hover{color:var(--c-primary-600)}
.brand-mark{font-family:var(--font-serif);font-size:22px;font-weight:700;letter-spacing:-.01em}
.brand-mark-accent{color:var(--c-accent)}
.brand-sub{font-size:12px;color:var(--c-mute);letter-spacing:.08em}
.brand-tools{display:flex;align-items:center;gap:12px}
.search-box{display:none;align-items:center;gap:8px;height:38px;padding:0 14px;border:1px solid var(--c-line);border-radius:var(--r-pill);background:var(--c-surface);min-width:250px}
.search-box i{color:var(--c-mute);font-size:13px}
.search-box input{border:none;background:transparent;outline:none;font-size:14px;width:100%}
.search-box input::placeholder{color:var(--c-mute)}
@media(min-width:1024px){.search-box{display:flex}}
.lang-switch{display:none;align-items:center;border:1px solid var(--c-line);border-radius:var(--r-pill);padding:2px;background:var(--c-surface)}
@media(min-width:1024px){.lang-switch{display:flex}}
.lang-btn{padding:4px 12px;font-size:13px;border-radius:var(--r-pill);color:var(--c-mute)}
.lang-btn.is-on{background:var(--c-primary-050);color:var(--c-primary-600);font-weight:600}
.menu-toggle{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border:1px solid var(--c-line);border-radius:var(--r-btn);background:var(--c-surface);color:var(--c-ink)}
@media(min-width:1024px){.menu-toggle{display:none}}

.channel-bar{display:none;border-top:1px solid var(--c-line);background:rgba(250,247,242,.98)}
.channel-bar.is-open{display:block}
.channel-inner{display:flex;flex-direction:column;padding-top:8px;padding-bottom:8px}
.channel-link{display:block;padding:10px 0;font-size:14px;color:var(--c-ink-2);border-bottom:1px solid var(--c-line)}
.channel-link:last-child{border-bottom:none}
.channel-link:hover{color:var(--c-primary)}
.channel-link.is-active{color:var(--c-primary);font-weight:600}
@media(min-width:1024px){
  .channel-bar{display:block !important}
  .channel-inner{flex-direction:row;align-items:center;gap:28px;height:44px;padding-top:0;padding-bottom:0;overflow-x:auto}
  .channel-link{padding:0;border-bottom:none;border-top:2px solid transparent;height:44px;line-height:44px;white-space:nowrap;font-size:14px}
  .channel-link.is-active{border-top-color:var(--c-primary)}
}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.btn i{font-size:13px;transition:transform .2s var(--ease)}
.btn-primary{background:var(--c-primary);color:#fff}
.btn-primary:hover{background:var(--c-primary-600);color:#fff}
.btn-primary:hover i{transform:translateX(4px)}
.btn-ghost{background:transparent;border-color:var(--c-ink);color:var(--c-ink)}
.btn-ghost:hover{background:var(--c-primary-050);border-color:var(--c-primary);color:var(--c-primary-600)}
.btn-light{background:#fff;color:var(--c-dark)}
.btn-light:hover{background:var(--c-primary-050);color:var(--c-primary-600)}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.5);color:#fff}
.btn-outline-light:hover{background:rgba(255,255,255,.12);color:#fff}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn-block{width:100%}

/* ---------- Hero ---------- */
.page-hero{position:relative;overflow:hidden;background:var(--c-dark);color:#fff}
.page-hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.5}
.page-hero-mask{position:absolute;inset:0;background:linear-gradient(102deg,rgba(16,23,22,.94) 0%,rgba(16,23,22,.78) 52%,rgba(16,23,22,.52) 100%)}
.page-hero-grid{
  position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:48px 48px;
}
.page-hero-inner{position:relative;padding:44px 0 56px}
@media(min-width:1024px){.page-hero-inner{padding:56px 0 76px}}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.62);margin-bottom:22px}
.breadcrumb a{color:rgba(255,255,255,.78)}
.breadcrumb a:hover{color:#fff}
.breadcrumb .bc-sep{opacity:.5}
.bc-cur{color:#fff}
.page-hero h1{
  font-family:var(--font-serif);
  font-size:clamp(30px,4.6vw,50px);
  line-height:1.14;letter-spacing:-.02em;color:#fff;max-width:20ch;
}
.page-hero-lead{margin-top:20px;max-width:720px;font-size:16px;line-height:1.9;color:rgba(255,255,255,.82)}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.hero-trust{display:flex;flex-wrap:wrap;gap:12px 28px;margin-top:32px}
.hero-trust li{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.8)}
.hero-trust i{color:var(--c-accent);font-size:13px}

/* ---------- Sections ---------- */
.section{padding:56px 0}
@media(min-width:1024px){.section{padding:88px 0}}
.section-tight{padding:40px 0}
@media(min-width:1024px){.section-tight{padding:56px 0}}
.section-head{max-width:720px;margin-bottom:32px}
@media(min-width:1024px){.section-head{margin-bottom:44px}}
.section-head h2{font-family:var(--font-serif);font-size:clamp(24px,3vw,36px);letter-spacing:-.01em;color:var(--c-ink)}
.section-head .section-sub{margin-top:14px;font-size:15px;color:var(--c-ink-2)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.1em;color:var(--c-primary);font-weight:600;margin-bottom:14px;text-transform:uppercase}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--c-primary);display:inline-block}

/* ---------- Zigzag ---------- */
.zigzag{border-top:1px dashed var(--c-line)}
.zig-row{display:grid;grid-template-columns:1fr;gap:24px;padding:32px 0;border-bottom:1px dashed var(--c-line)}
.zig-media{order:-1}
.zig-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-img);box-shadow:var(--sh-1)}
.zig-text h3{font-family:var(--font-serif);font-size:clamp(20px,2.2vw,26px);line-height:1.3;margin-bottom:14px}
.zig-text p{font-size:15px;color:var(--c-ink-2)}
.zig-text p + p{margin-top:12px}
.badge{display:inline-block;padding:4px 10px;border-radius:6px;background:var(--c-primary-050);color:var(--c-primary-600);font-size:12px;font-weight:600;margin-bottom:14px}
.badge-warn{background:var(--c-accent-050);color:#9C6114}
.tick-list{margin-top:16px;display:grid;gap:10px}
.tick-list li{display:flex;gap:10px;font-size:14px;color:var(--c-ink-2);line-height:1.7}
.tick-list i{color:var(--c-primary);font-size:12px;margin-top:7px}
@media(min-width:1024px){
  .zig-row{grid-template-columns:1fr 1fr;gap:56px;align-items:center;padding:48px 0}
  .zig-media{order:0}
  .zig-row.is-reverse .zig-media{order:-1}
}

/* ---------- Guard cards ---------- */
.guard-grid{display:grid;grid-template-columns:1fr;gap:20px}
@media(min-width:768px){.guard-grid{grid-template-columns:1fr 1fr}}
.guard-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:26px;box-shadow:var(--sh-1);
  transition:border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.guard-card:hover{border-color:var(--c-primary);transform:translateY(-2px);box-shadow:var(--sh-2)}
.guard-icon{
  width:42px;height:42px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:var(--c-primary-050);color:var(--c-primary-600);font-size:16px;margin-bottom:16px;
}
.guard-card h3{font-size:18px;margin-bottom:10px}
.guard-card p{font-size:14px;color:var(--c-ink-2)}
.guard-card .tagline{display:inline-block;margin-top:14px;font-size:12px;padding:3px 9px;border-radius:6px;background:var(--c-accent-050);color:#9C6114;font-weight:600}

/* ---------- Scenes ---------- */
.scene-band{background:var(--c-surface);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line)}
.scene-list{display:grid;grid-template-columns:1fr}
.scene-item{display:flex;gap:18px;padding:22px 0;border-bottom:1px solid var(--c-line)}
.scene-item:last-child{border-bottom:none}
.scene-num{font-family:var(--font-serif);font-size:20px;line-height:1.4;color:var(--c-primary);opacity:.5;min-width:34px}
.scene-body h3{font-size:17px;margin-bottom:6px}
.scene-body p{font-size:14px;color:var(--c-ink-2)}
@media(min-width:768px){
  .scene-list{grid-template-columns:1fr 1fr;column-gap:44px}
  .scene-item:nth-last-child(2){border-bottom:none}
}

/* ---------- FAQ ---------- */
.faq-wrap{display:grid;grid-template-columns:1fr;gap:28px}
@media(min-width:1024px){.faq-wrap{grid-template-columns:minmax(240px,4fr) minmax(0,8fr);gap:56px}}
.faq-side p{margin-top:16px;font-size:14px;color:var(--c-ink-2);max-width:32ch}
.faq-list{border-top:1px solid var(--c-line)}
.faq-item{border-bottom:1px solid var(--c-line)}
.faq-q{
  display:flex;align-items:flex-start;justify-content:space-between;gap:20px;
  padding:20px 0;font-size:16px;font-weight:600;color:var(--c-ink);cursor:pointer;list-style:none;
}
.faq-q::-webkit-details-marker{display:none}
.faq-q::after{content:"+";font-size:22px;line-height:1;color:var(--c-primary);transition:transform .22s var(--ease)}
details[open] .faq-q::after{transform:rotate(45deg)}
.faq-a{padding:0 0 22px;font-size:15px;color:var(--c-ink-2);max-width:60ch}

/* ---------- CTA narrow ---------- */
.cta-band{padding:0 0 64px}
@media(min-width:1024px){.cta-band{padding:0 0 96px}}
.cta-narrow{
  background:var(--c-dark);color:#fff;border-radius:18px;padding:36px 26px;
  display:grid;grid-template-columns:1fr;gap:26px;align-items:center;
}
@media(min-width:900px){.cta-narrow{grid-template-columns:1fr auto;padding:44px 48px;gap:40px}}
.cta-narrow h2{font-family:var(--font-serif);font-size:clamp(22px,2.6vw,32px);color:#fff;line-height:1.25}
.cta-narrow p{margin-top:12px;font-size:14px;color:rgba(255,255,255,.74);max-width:56ch}
.cta-points{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:18px}
.cta-points li{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.82)}
.cta-points i{color:var(--c-accent)}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- Footer ---------- */
.site-footer{background:var(--c-paper);border-top:1px solid var(--c-line);padding:56px 0 26px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px}
@media(min-width:768px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px}}
.footer-brand{font-family:var(--font-serif);font-size:20px;font-weight:700}
.footer-brand span{color:var(--c-accent)}
.footer-desc{margin-top:14px;font-size:14px;color:var(--c-ink-2);max-width:36ch}
.footer-col h4{font-size:14px;color:var(--c-ink);margin-bottom:14px}
.footer-col a{display:block;font-size:14px;color:var(--c-ink-2);padding:5px 0}
.footer-col a:hover{color:var(--c-primary)}
.footer-bottom{
  display:flex;flex-direction:column;gap:8px;margin-top:40px;padding-top:20px;
  border-top:1px solid var(--c-line);font-size:13px;color:var(--c-mute);
}
@media(min-width:768px){.footer-bottom{flex-direction:row;justify-content:space-between;align-items:center}}

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

/* roulang page: category2 */
:root{
  --c-ink:#14181A;--c-ink-2:#3E4649;--c-mute:#767F82;
  --c-paper:#FAF7F2;--c-surface:#FFFFFF;--c-line:#E6E1D8;
  --c-primary:#0F6B5C;--c-primary-600:#0B5347;--c-primary-050:#E8F1EE;
  --c-accent:#D98A2B;--c-accent-050:#FBF0DF;--c-dark:#101716;
  --r-card:14px;--r-btn:10px;--r-pill:999px;--r-img:12px;
  --sh-1:0 1px 2px rgba(16,23,22,.05);
  --sh-2:0 10px 30px -16px rgba(16,23,22,.28);
  --ease:cubic-bezier(.2,.7,.2,1);
  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-serif:"Noto Serif SC","Songti SC","Source Han Serif SC",serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body.site-body{
  margin:0;background:var(--c-paper);color:var(--c-ink);
  font-family:var(--font-sans);font-size:16px;line-height:1.85;
  font-variant-numeric:tabular-nums;-webkit-font-smoothing:antialiased;
}
body.site-body img{max-width:100%;display:block;height:auto}
body.site-body a{color:inherit;text-decoration:none}
body.site-body button{font:inherit;cursor:pointer;background:none;border:0;color:inherit}
body.site-body input{font:inherit}
body.site-body h1,body.site-body h2,body.site-body h3,body.site-body h4{
  font-family:var(--font-serif);font-weight:700;line-height:1.25;letter-spacing:-.01em;margin:0;
}
body.site-body p{margin:0}
body.site-body ul,body.site-body ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px}
.skip{position:absolute;left:-9999px;top:0}
.skip:focus{left:16px;top:12px;z-index:200;background:#fff;padding:10px 16px;border-radius:var(--r-btn);box-shadow:var(--sh-2)}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media(min-width:1024px){.container{padding:0 24px}}
.section{padding:72px 0 0}
@media(min-width:1024px){.section{padding:112px 0 0}}
.section-head{display:flex;flex-wrap:wrap;gap:20px;align-items:flex-end;justify-content:space-between;margin-bottom:40px}
.section-title{font-size:clamp(26px,3.2vw,40px);line-height:1.2;letter-spacing:-.02em}
.section-note{font-size:14px;color:var(--c-mute);max-width:50ch;line-height:1.9}
.eyebrow{display:inline-flex;align-items:center;font-size:12px;letter-spacing:.16em;
  color:var(--c-primary);background:var(--c-primary-050);border-radius:var(--r-pill);
  padding:6px 14px;margin-bottom:16px;font-family:var(--font-sans)}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 22px;
  border-radius:var(--r-btn);font-size:15px;font-weight:600;white-space:nowrap;
  transition:background-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease),border-color .2s var(--ease)}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 10px 24px -18px rgba(15,107,92,.95)}
.btn-primary:hover{background:var(--c-primary-600);transform:translateY(-1px)}
.btn-primary:hover .btn-arrow{transform:translateX(4px)}
.btn-ghost{border:1px solid var(--c-ink);color:var(--c-ink);background:transparent}
.btn-ghost:hover{background:var(--c-primary-050);border-color:var(--c-primary);color:var(--c-primary)}
.btn-light{background:#fff;color:var(--c-ink)}
.btn-light:hover{background:var(--c-primary-050);color:var(--c-primary)}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn-arrow{transition:transform .22s var(--ease)}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--c-primary);font-size:14px;font-weight:600;position:relative}
.link-arrow::after{content:"";position:absolute;left:0;bottom:-3px;width:100%;height:1px;background:var(--c-primary);
  transform:scaleX(0);transform-origin:left;transition:transform .22s var(--ease)}
.link-arrow:hover::after{transform:scaleX(1)}

/* header */
.brand-bar{background:var(--c-surface);border-bottom:1px solid var(--c-line)}
.brand-inner{display:flex;align-items:center;gap:18px;min-height:64px}
.logo{display:flex;align-items:baseline;gap:10px;flex:0 0 auto}
.logo-word{font-family:var(--font-serif);font-size:22px;font-weight:700;letter-spacing:.01em}
.logo-word em{font-style:normal;color:var(--c-primary)}
.logo-sub{font-size:12px;color:var(--c-mute);letter-spacing:.16em}
.brand-tools{margin-left:auto;display:flex;align-items:center;gap:14px}
.search{display:flex;align-items:center;gap:8px;height:38px;padding:0 14px;border:1px solid var(--c-line);
  border-radius:var(--r-pill);background:var(--c-paper);color:var(--c-mute);transition:border-color .2s var(--ease)}
.search:focus-within{border-color:var(--c-primary)}
.search input{border:0;background:transparent;outline:none;width:148px;font-size:14px;color:var(--c-ink)}
.lang-switch{display:flex;align-items:center;gap:4px;font-size:13px;color:var(--c-mute)}
.lang-switch a{padding:4px 9px;border-radius:var(--r-pill)}
.lang-switch a:hover{color:var(--c-primary)}
.lang-switch a.is-on{color:var(--c-primary);background:var(--c-primary-050)}
.nav-toggle{display:none;width:40px;height:40px;flex-direction:column;justify-content:center;align-items:center;gap:5px;
  border:1px solid var(--c-line);border-radius:10px}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--c-ink);transition:transform .2s var(--ease),opacity .2s var(--ease)}

.channel-bar{position:sticky;top:0;z-index:60;background:rgba(250,247,242,.97);border-bottom:1px solid transparent;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease)}
.channel-bar.is-stuck{border-bottom-color:var(--c-line);box-shadow:0 12px 26px -24px rgba(16,23,22,.85)}
.channel-inner{display:flex;align-items:center;gap:26px;height:46px;overflow-x:auto;scrollbar-width:none}
.channel-inner::-webkit-scrollbar{display:none}
.channel-link{font-size:14.5px;color:var(--c-ink-2);white-space:nowrap;padding:2px 0 6px;
  border-bottom:2px solid transparent;transition:color .2s var(--ease),border-color .2s var(--ease)}
.channel-link:hover{color:var(--c-primary)}
.channel-link.is-active{color:var(--c-primary);font-weight:600;border-bottom-color:var(--c-primary)}

/* hero */
.page-hero{position:relative;overflow:hidden;background:var(--c-dark);color:#fff;padding:52px 0 88px}
.page-hero::before{content:"";position:absolute;inset:0;
  background-image:linear-gradient(115deg,rgba(10,20,18,.93),rgba(16,23,22,.68)),
  url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center}
.page-hero::after{content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(0deg,rgba(255,255,255,.06) 0 1px,transparent 1px 48px),
  repeating-linear-gradient(90deg,rgba(255,255,255,.06) 0 1px,transparent 1px 48px)}
.hero-inner{position:relative;z-index:2;max-width:920px}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:rgba(255,255,255,.7);margin-bottom:24px}
.breadcrumb a:hover{color:#fff}
.breadcrumb .sep{opacity:.45}
.breadcrumb .current{color:#fff}
.page-hero .eyebrow{background:rgba(255,255,255,.14);color:#fff}
.page-title{font-size:clamp(28px,4.6vw,50px);line-height:1.14;letter-spacing:-.02em}
.hero-lead{margin-top:20px;font-size:16.5px;line-height:1.95;color:rgba(255,255,255,.82);max-width:74ch}
.hero-points{display:flex;flex-wrap:wrap;gap:12px 28px;margin-top:32px}
.hero-points li{display:flex;align-items:center;gap:8px;font-size:14px;color:rgba(255,255,255,.9)}
.hero-points .dot{width:6px;height:6px;border-radius:50%;background:var(--c-accent);flex:0 0 auto}

/*锚点条*/
.anchor-wrap{margin-top:-30px;position:relative;z-index:10}
.anchor-nav{display:flex;align-items:center;gap:6px;overflow-x:auto;background:var(--c-surface);
  border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-2);padding:10px 12px;scrollbar-width:none}
.anchor-nav::-webkit-scrollbar{display:none}
.anchor-title{font-size:12px;letter-spacing:.14em;color:var(--c-mute);padding:0 12px 0 6px;
  border-right:1px solid var(--c-line);margin-right:6px;white-space:nowrap}
.anchor-link{font-size:14px;color:var(--c-ink-2);padding:8px 14px;border-radius:var(--r-pill);
  white-space:nowrap;transition:background-color .2s var(--ease),color .2s var(--ease)}
.anchor-link:hover{background:var(--c-primary-050);color:var(--c-primary)}
.anchor-link.is-active{background:var(--c-primary);color:#fff}

/* 时间线 */
.flow-figure{margin:0 0 48px;border:1px solid var(--c-line);border-radius:var(--r-img);
  overflow:hidden;background:var(--c-surface);box-shadow:var(--sh-1)}
.flow-figure img{width:100%;aspect-ratio:16/7;object-fit:cover}
.flow-figure figcaption{font-size:13px;color:var(--c-mute);padding:12px 18px;border-top:1px solid var(--c-line)}
.timeline{position:relative}
.tl-item{position:relative;display:grid;grid-template-columns:96px minmax(0,1fr);gap:32px;padding-bottom:44px}
.tl-item::before{content:"";position:absolute;left:47px;top:66px;bottom:0;width:1px;
  background:linear-gradient(180deg,var(--c-line),rgba(230,225,216,0))}
.tl-item:last-child{padding-bottom:0}
.tl-item:last-child::before{display:none}
.tl-num{font-family:var(--font-serif);font-size:40px;line-height:1;color:var(--c-primary);opacity:.3;padding-top:8px}
.tl-body{background:var(--c-surface);border:1px solid var(--c-line);border-left:2px solid var(--c-primary);
  border-radius:var(--r-card);padding:24px;box-shadow:var(--sh-1);transition:box-shadow .2s var(--ease),transform .2s var(--ease)}
.tl-body:hover{box-shadow:var(--sh-2);transform:translateY(-2px)}
.tl-title{font-size:20px;line-height:1.4}
.tl-text{margin-top:10px;font-size:15px;color:var(--c-ink-2);line-height:1.9}
.tl-list{margin-top:14px;display:grid;gap:8px}
.tl-list li{position:relative;padding-left:18px;font-size:14px;color:var(--c-ink-2)}
.tl-list li::before{content:"";position:absolute;left:0;top:12px;width:8px;height:1px;background:var(--c-primary)}

/* split */
.split{display:grid;grid-template-columns:1fr;gap:32px}
@media(min-width:900px){.split{grid-template-columns:5fr 7fr;gap:48px;align-items:center}}
.split.rev{}
@media(min-width:900px){.split.rev{grid-template-columns:7fr 5fr}}
.split-media{border:1px solid var(--c-line);border-radius:var(--r-img);overflow:hidden;box-shadow:var(--sh-2);background:var(--c-surface)}
.split-media img{width:100%;aspect-ratio:16/11;object-fit:cover}
.lead-text{font-size:15.5px;color:var(--c-ink-2);line-height:1.95;margin-top:14px;max-width:52ch}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.tag{font-size:12px;border-radius:6px;padding:4px 10px;background:var(--c-primary-050);color:var(--c-primary)}
.tag.warn{background:var(--c-accent-050);color:var(--c-accent)}

.trouble-list{display:grid;gap:0;margin-top:6px}
.trouble-item{padding:18px 0;border-top:1px solid var(--c-line)}
.trouble-item:last-child{border-bottom:1px solid var(--c-line)}
.trouble-item h3{font-family:var(--font-sans);font-size:16.5px;font-weight:600;display:flex;flex-wrap:wrap;align-items:center;gap:10px}
.trouble-item p{margin-top:8px;font-size:14.5px;color:var(--c-ink-2);line-height:1.9}

.checklist{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:26px 28px;box-shadow:var(--sh-1)}
.checklist li{display:flex;gap:12px;padding:14px 0;border-bottom:1px dashed var(--c-line);
  font-size:15px;color:var(--c-ink-2);line-height:1.8}
.checklist li:last-child{border-bottom:0}
.checklist .mark{flex:0 0 22px;height:22px;border-radius:50%;background:var(--c-primary-050);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;font-size:12px;margin-top:6px}

/* FAQ */
.faq-wrap{display:grid;grid-template-columns:1fr;gap:32px}
@media(min-width:960px){.faq-wrap{grid-template-columns:4fr 8fr;gap:48px;align-items:start}}
.faq-list{border-top:1px solid var(--c-line)}
.faq-item{border-bottom:1px solid var(--c-line);padding:20px 0}
.faq-item summary{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;
  cursor:pointer;list-style:none;font-size:17px;font-weight:600;line-height:1.6}
.faq-item summary::-webkit-details-marker{display:none}
.faq-icon{flex:0 0 auto;width:22px;height:22px;margin-top:4px;color:var(--c-primary);
  transition:transform .25s var(--ease)}
.faq-item[open] .faq-icon{transform:rotate(180deg)}
.faq-a{padding-top:12px;font-size:15px;color:var(--c-ink-2);line-height:1.95;max-width:60ch}

/* CTA */
.cta-band{margin-top:72px;background:var(--c-dark);color:#fff;border-radius:18px;padding:40px 32px;
  display:flex;flex-wrap:wrap;gap:24px;align-items:center;justify-content:space-between;
  position:relative;overflow:hidden}
.cta-band::after{content:"";position:absolute;right:-70px;top:-70px;width:240px;height:240px;border-radius:50%;
  background:radial-gradient(circle,rgba(217,138,43,.3),transparent 70%)}
.cta-band h2{font-size:clamp(22px,2.4vw,30px);position:relative;z-index:2}
.cta-band p{margin-top:10px;font-size:14.5px;color:rgba(255,255,255,.78);max-width:54ch;position:relative;z-index:2}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;position:relative;z-index:2}

/* footer */
.site-footer{background:var(--c-paper);border-top:1px solid var(--c-line);margin-top:72px;padding-top:56px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px;padding-bottom:40px}
@media(min-width:760px){.footer-grid{grid-template-columns:1.6fr 1fr 1fr}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.7fr 1fr 1fr 1fr;gap:40px}}
.footer-brand{font-family:var(--font-serif);font-size:22px;font-weight:700}
.footer-brand span{color:var(--c-primary)}
.footer-desc{margin-top:14px;font-size:13.5px;color:var(--c-mute);line-height:1.95;max-width:38ch}
.footer-col h4{font-family:var(--font-sans);font-size:14px;margin-bottom:14px;color:var(--c-ink)}
.footer-col a{display:block;font-size:14px;color:var(--c-ink-2);padding:5px 0;transition:color .2s var(--ease)}
.footer-col a:hover{color:var(--c-primary)}
.footer-bottom{border-top:1px solid var(--c-line);display:flex;flex-wrap:wrap;gap:10px;
  justify-content:space-between;padding:18px 0 28px;font-size:13px;color:var(--c-mute)}

@media(max-width:1023px){
  .lang-switch{display:none}
  .nav-toggle{display:flex}
  .channel-bar{display:none}
  .channel-bar.is-open{display:block;position:fixed;top:64px;left:0;right:0;background:var(--c-paper);
    box-shadow:var(--sh-2);z-index:80;border-bottom:1px solid var(--c-line)}
  .channel-inner{flex-direction:column;align-items:stretch;height:auto;gap:0;padding:8px 20px 18px}
  .channel-link{padding:12px 0;border-bottom:1px solid var(--c-line);border-left:0}
  .channel-link.is-active{border-bottom-color:var(--c-line)}
  .nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
  .nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
}
@media(max-width:860px){
  .search{display:none}
}
@media(max-width:767px){
  .page-hero{padding:40px 0 76px}
  .tl-item{grid-template-columns:1fr;gap:12px;padding-left:28px;padding-bottom:34px}
  .tl-num{font-size:30px;padding-top:0}
  .tl-item::before{left:9px;top:44px;bottom:0}
  .tl-item::after{content:"";position:absolute;left:5px;top:8px;width:9px;height:9px;border-radius:50%;background:var(--c-primary)}
  .cta-band{padding:32px 22px}
  .checklist{padding:20px}
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *{transition:none!important;animation:none!important}
}

/* roulang page: category4 */
:root{
  --c-ink:#14181A;
  --c-ink-2:#3E4649;
  --c-mute:#767F82;
  --c-paper:#FAF7F2;
  --c-surface:#FFFFFF;
  --c-line:#E6E1D8;
  --c-primary:#0F6B5C;
  --c-primary-600:#0B5347;
  --c-primary-050:#E8F1EE;
  --c-accent:#D98A2B;
  --c-accent-050:#FBF0DF;
  --c-dark:#101716;
  --r-card:14px;
  --r-btn:10px;
  --r-pill:999px;
  --r-img:12px;
  --sh-1:0 1px 2px rgba(16,23,22,.05);
  --sh-2:0 10px 30px -16px rgba(16,23,22,.28);
  --ease:cubic-bezier(.2,.7,.2,1);
  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-serif:"Noto Serif SC","Songti SC","Source Han Serif SC",serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
.page-body{
  margin:0;
  background:var(--c-surface);
  color:var(--c-ink);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
p{margin:0}
a{color:var(--c-primary);text-decoration:none}
button,input{font-family:inherit}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 20px;
}
@media (min-width:1024px){
  .container{padding:0 24px}
}

/* ---------- 顶部品牌行 ---------- */
.site-header{
  position:relative;
  background:var(--c-surface);
  border-bottom:1px solid var(--c-line);
  z-index:80;
}
.brand-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  height:64px;
}
.brand{
  display:flex;
  align-items:baseline;
  gap:10px;
  text-decoration:none;
}
.brand-mark{
  font-family:var(--font-serif);
  font-size:24px;
  font-weight:700;
  letter-spacing:-.01em;
  color:var(--c-ink);
  line-height:1;
}
.brand-mark-accent{color:var(--c-primary)}
.brand-sub{
  font-size:12px;
  letter-spacing:.16em;
  color:var(--c-mute);
}
.brand-tools{
  display:flex;
  align-items:center;
  gap:14px;
}
.search-box{
  display:flex;
  align-items:center;
  gap:8px;
  height:38px;
  padding:0 14px;
  border:1px solid var(--c-line);
  border-radius:var(--r-pill);
  background:var(--c-paper);
  color:var(--c-mute);
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.search-box:focus-within{
  border-color:var(--c-primary);
  background:var(--c-surface);
}
.search-box input{
  border:0;
  outline:0;
  background:transparent;
  width:168px;
  font-size:13px;
  color:var(--c-ink);
}
.lang-switch{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
}
.lang-switch a{color:var(--c-mute);text-decoration:none;transition:color .2s var(--ease)}
.lang-switch a:hover{color:var(--c-primary)}
.lang-switch a.is-on{color:var(--c-primary);font-weight:600}
.nav-toggle{
  display:none;
  align-items:center;
  justify-content:center;
  width:40px;
  height:40px;
  border:1px solid var(--c-line);
  border-radius:var(--r-btn);
  background:var(--c-surface);
  color:var(--c-ink);
  cursor:pointer;
}

/* ---------- 频道行 ---------- */
.channel-bar{
  position:sticky;
  top:0;
  z-index:70;
  background:rgba(250,247,242,.98);
  border-bottom:1px solid var(--c-line);
}
.channel-inner{
  display:flex;
  align-items:center;
  gap:26px;
  height:44px;
  overflow-x:auto;
  scrollbar-width:none;
}
.channel-inner::-webkit-scrollbar{display:none}
.channel-link{
  position:relative;
  flex:0 0 auto;
  padding:12px 0;
  font-size:14px;
  color:var(--c-ink-2);
  text-decoration:none;
  white-space:nowrap;
  transition:color .2s var(--ease);
}
.channel-link:hover{color:var(--c-primary)}
.channel-link.is-active{color:var(--c-primary);font-weight:600}
.channel-link.is-active::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:4px;
  height:2px;
  background:var(--c-primary);
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 22px;
  border:1px solid transparent;
  border-radius:var(--r-btn);
  font-size:14px;
  font-weight:600;
  line-height:1.2;
  text-decoration:none;
  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(--c-primary);
  color:#fff;
}
.btn-primary:hover{
  background:var(--c-primary-600);
  transform:translateY(-1px);
  box-shadow:var(--sh-2);
}
.btn-primary:hover .btn-arrow{transform:translateX(4px)}
.btn-ghost{
  background:transparent;
  border-color:var(--c-ink);
  color:var(--c-ink);
}
.btn-ghost:hover{
  background:var(--c-primary-050);
  border-color:var(--c-primary);
  color:var(--c-primary-600);
}
.btn-light{
  background:#fff;
  color:var(--c-dark);
}
.btn-light:hover{background:var(--c-primary-050);color:var(--c-primary-600)}
.btn-sm{padding:8px 16px;font-size:13px}
.btn-arrow{transition:transform .2s var(--ease)}

/* ---------- 通用徽章与文字链 ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 12px;
  border-radius:6px;
  background:var(--c-primary-050);
  color:var(--c-primary);
  font-size:12px;
  font-weight:600;
  letter-spacing:.04em;
}
.badge-accent{
  background:var(--c-accent-050);
  color:var(--c-accent);
}
.text-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--c-primary);
  text-decoration:none;
}
.text-link::after{
  content:"";
  position:absolute;
  left:0;
  bottom:-3px;
  width:0;
  height:1px;
  background:var(--c-primary);
  transition:width .22s var(--ease);
}
.text-link:hover::after{width:100%}

/* ---------- 面包屑 ---------- */
.crumb{
  padding:20px 0 0;
  font-size:13px;
  color:var(--c-mute);
}
.crumb a{color:var(--c-mute);text-decoration:none;transition:color .2s var(--ease)}
.crumb a:hover{color:var(--c-primary)}
.crumb .sep{margin:0 8px;color:var(--c-line)}

/* ---------- Hero ---------- */
.page-hero{
  padding:40px 0 72px;
  background:linear-gradient(180deg,var(--c-surface) 0%,var(--c-paper) 100%);
}
.hero-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:48px;
  align-items:center;
}
.hero-title{
  margin:18px 0 0;
  font-family:var(--font-serif);
  font-size:clamp(34px,4.4vw,54px);
  font-weight:700;
  line-height:1.12;
  letter-spacing:-.02em;
  color:var(--c-ink);
}
.hero-sub{
  margin-top:20px;
  max-width:34em;
  font-size:16px;
  line-height:1.9;
  color:var(--c-ink-2);
}
.hero-cta{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-top:32px;
}
.hero-trust{
  display:flex;
  flex-wrap:wrap;
  gap:24px;
  margin:32px 0 0;
  padding:0;
  list-style:none;
}
.hero-trust li{
  display:flex;
  align-items:center;
  gap:7px;
  font-size:13px;
  color:var(--c-ink-2);
}
.hero-trust i{color:var(--c-primary)}
.hero-media{
  position:relative;
  border-radius:18px;
  overflow:hidden;
  box-shadow:var(--sh-2);
  aspect-ratio:4 / 3;
  background:var(--c-dark);
}
.hero-media img{
  width:100%;
  height:100%;
  object-fit:cover;
}
.hero-media::after{
  content:"";
  position:absolute;
  inset:0;
  z-index:1;
  background:linear-gradient(180deg,rgba(16,23,22,.30),rgba(16,23,22,.44));
}
.hero-media::before{
  content:"";
  position:absolute;
  inset:0;
  z-index:2;
  background-image:
    repeating-linear-gradient(0deg,rgba(255,255,255,.06) 0 1px,transparent 1px 48px),
    repeating-linear-gradient(90deg,rgba(255,255,255,.06) 0 1px,transparent 1px 48px);
  pointer-events:none;
}
.hero-float{
  position:absolute;
  right:18px;
  bottom:18px;
  z-index:3;
  width:220px;
  padding:16px 18px;
  background:#fff;
  border-radius:var(--r-card);
  box-shadow:var(--sh-2);
}
.hero-float strong{
  display:block;
  font-family:var(--font-serif);
  font-size:36px;
  line-height:1;
  color:var(--c-primary);
}
.hero-float span{
  display:block;
  margin-top:8px;
  font-size:12px;
  line-height:1.6;
  color:var(--c-mute);
}

/* ---------- 导语 ---------- */
.lead-block{
  max-width:840px;
  margin:0 auto;
  padding:56px 0 0;
  font-size:17px;
  line-height:1.95;
  color:var(--c-ink-2);
}

/* ---------- 指标条 ---------- */
.metric-strip{
  margin-top:56px;
  background:var(--c-dark);
  color:#fff;
  padding:44px 0;
}
.metric-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:1px;
  background:rgba(255,255,255,.12);
}
.metric-item{
  background:var(--c-dark);
  padding:12px 24px;
}
.metric-num{
  display:block;
  font-family:var(--font-serif);
  font-size:clamp(30px,3.6vw,46px);
  font-weight:700;
  line-height:1;
  color:#fff;
}
.metric-num em{
  font-style:normal;
  font-size:20px;
  color:var(--c-accent);
  margin-left:3px;
}
.metric-label{
  display:block;
  margin-top:12px;
  font-size:13px;
  color:rgba(255,255,255,.64);
}

/* ---------- 板块 ---------- */
.section{padding:88px 0 0}
.section:last-of-type{padding-bottom:0}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  flex-wrap:wrap;
  margin-bottom:40px;
}
.section-title{
  margin:0;
  font-family:var(--font-serif);
  font-size:clamp(24px,3vw,34px);
  font-weight:700;
  line-height:1.3;
  color:var(--c-ink);
}
.section-desc{
  margin:12px 0 0;
  max-width:56ch;
  font-size:14px;
  line-height:1.85;
  color:var(--c-mute);
}
.eyebrow{
  display:inline-block;
  margin-bottom:12px;
  font-size:12px;
  letter-spacing:.18em;
  color:var(--c-accent);
}

/* ---------- 手风琴 ---------- */
.faq-list{
  max-width:920px;
  border-top:1px solid var(--c-line);
}
.faq-item{
  border-bottom:1px solid var(--c-line);
  padding:20px 0;
}
.faq-q{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  cursor:pointer;
  list-style:none;
  font-size:16px;
  font-weight:600;
  line-height:1.7;
  color:var(--c-ink);
  transition:color .2s var(--ease);
}
.faq-q::-webkit-details-marker{display:none}
.faq-q:hover{color:var(--c-primary)}
.faq-mark{
  position:relative;
  flex:0 0 auto;
  width:16px;
  height:16px;
  transition:transform .3s var(--ease);
}
.faq-mark::before,
.faq-mark::after{
  content:"";
  position:absolute;
  background:var(--c-primary);
  border-radius:2px;
}
.faq-mark::before{width:16px;height:2px;top:7px;left:0}
.faq-mark::after{
  width:2px;
  height:16px;
  top:0;
  left:7px;
  transition:transform .3s var(--ease),opacity .3s var(--ease);
}
.faq-item[open] .faq-mark{transform:rotate(180deg)}
.faq-item[open] .faq-mark::after{transform:scaleY(0);opacity:0}
.faq-a{
  padding-top:14px;
  max-width:60ch;
  font-size:15px;
  line-height:1.95;
  color:var(--c-ink-2);
}

/* ---------- 图文核对清单 ---------- */
.check-grid{
  display:grid;
  grid-template-columns:0.86fr 1.14fr;
  gap:28px;
  align-items:start;
}
.check-media{
  position:relative;
  border-radius:var(--r-img);
  overflow:hidden;
  border:1px solid var(--c-line);
  box-shadow:var(--sh-1);
  aspect-ratio:4 / 5;
  background:var(--c-paper);
}
.check-media img{width:100%;height:100%;object-fit:cover}
.check-media figcaption{
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  padding:16px 18px;
  font-size:12px;
  line-height:1.7;
  color:#fff;
  background:linear-gradient(180deg,rgba(16,23,22,0),rgba(16,23,22,.82));
}
.checks{
  display:grid;
  gap:16px;
}
.check-item{
  display:flex;
  gap:16px;
  padding:20px;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  transition:border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.check-item:hover{
  border-color:var(--c-primary);
  transform:translateY(-2px);
  box-shadow:var(--sh-2);
}
.check-idx{
  flex:0 0 auto;
  font-family:var(--font-serif);
  font-size:22px;
  font-weight:700;
  line-height:1.2;
  color:var(--c-primary);
  opacity:.45;
}
.check-item h3{
  margin:0 0 8px;
  font-family:var(--font-sans);
  font-size:16px;
  font-weight:600;
  color:var(--c-ink);
}
.check-item p{
  font-size:14px;
  line-height:1.9;
  color:var(--c-ink-2);
}
.check-note{
  margin-top:18px;
  padding:16px 20px;
  border-radius:var(--r-card);
  background:var(--c-accent-050);
  color:#8A5312;
  font-size:13px;
  line-height:1.85;
}

/* ---------- 窄版 CTA ---------- */
.cta-band{
  margin-top:88px;
  background:var(--c-dark);
  color:#fff;
}
.cta-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
  padding:64px 0;
}
.cta-title{
  margin:0;
  font-family:var(--font-serif);
  font-size:clamp(24px,3vw,36px);
  font-weight:700;
  line-height:1.3;
  color:#fff;
}
.cta-note{
  margin:14px 0 0;
  max-width:56ch;
  font-size:14px;
  line-height:1.9;
  color:rgba(255,255,255,.66);
}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:0;
  padding:64px 0 28px;
  background:var(--c-paper);
  border-top:1px solid var(--c-line);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:32px;
}
.footer-brand{
  font-family:var(--font-serif);
  font-size:22px;
  font-weight:700;
  color:var(--c-ink);
}
.footer-brand span{color:var(--c-primary)}
.footer-desc{
  margin-top:14px;
  max-width:34ch;
  font-size:13px;
  line-height:1.9;
  color:var(--c-mute);
}
.footer-col h4{
  margin:0 0 14px;
  font-size:14px;
  font-weight:600;
  color:var(--c-ink);
}
.footer-col a{
  display:block;
  padding:6px 0;
  font-size:13px;
  color:var(--c-ink-2);
  text-decoration:none;
  transition:color .2s var(--ease),transform .2s var(--ease);
}
.footer-col a:hover{color:var(--c-primary);transform:translateX(2px)}
.footer-bottom{
  display:flex;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  margin-top:44px;
  padding-top:20px;
  border-top:1px solid var(--c-line);
  font-size:12px;
  color:var(--c-mute);
}

/* ---------- 动效 ---------- */
.reveal{
  opacity:0;
  transform:translateY(12px);
  transition:opacity .45s var(--ease),transform .45s var(--ease);
}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  .btn:hover{transform:none}
  .check-item:hover{transform:none}
  html{scroll-behavior:auto}
}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .nav-toggle{display:inline-flex}
  .channel-bar{
    position:static;
    display:none;
    background:var(--c-paper);
  }
  .channel-bar.is-open{display:block}
  .channel-inner{
    flex-direction:column;
    align-items:flex-start;
    height:auto;
    gap:2px;
    padding:10px 20px 18px;
  }
  .channel-link{width:100%;padding:10px 0}
  .channel-link.is-active::after{right:auto;width:28px;bottom:4px}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .check-grid{grid-template-columns:1fr}
  .check-media{aspect-ratio:16 / 10}
  .metric-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:767px){
  .search-box{display:none}
  .cta-inner{padding:56px 0}
  .section{padding-top:64px}
  .cta-band{margin-top:64px}
}
@media (max-width:520px){
  .brand-sub{display:none}
  .hero-media{aspect-ratio:16 / 11}
  .hero-float{width:176px;padding:14px}
  .hero-float strong{font-size:30px}
  .metric-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column}
}