/* roulang page: index */
:root{
  --ink:#0F3A34;
  --ink-deep:#08241F;
  --coral:#E0673F;
  --coral-hover:#C2522D;
  --coral-mist:#F7E3DA;
  --bamboo:#4C8C7D;
  --paper:#FAF7F1;
  --panel:#F2EDE4;
  --white:#FFFDF9;
  --line:#DCD4C6;
  --text:#202724;
  --text-2:#5A6560;
  --text-3:#8A938E;
  --ok:#3F7D5A;
  --err:#B4453A;
  --r-sm:4px;
  --r-md:6px;
  --r-lg:10px;
  --r-xl:12px;
  --shadow-1:0 1px 2px rgba(16,42,38,.05);
  --shadow-2:0 10px 28px -12px rgba(16,42,38,.18);
  --container:1180px;
  --sans:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --serif:"Noto Serif SC","Songti SC","SimSun",Georgia,serif;
  --num:"Inter","Noto Sans SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}
p{margin:0 0 1.1em}
p:last-child{margin-bottom:0}
h1,h2,h3,h4{margin:0;font-family:var(--serif);font-weight:600;letter-spacing:.01em;color:var(--ink)}
ul,ol{margin:0;padding:0;list-style:none}
::selection{background:var(--coral-mist);color:var(--ink-deep)}
:focus-visible{outline:2px solid var(--bamboo);outline-offset:3px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
section[id]{scroll-margin-top:96px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(250,247,241,.92);
  -webkit-backdrop-filter:saturate(160%) blur(10px);
  backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .22s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 20px -16px rgba(16,42,38,.5)}
.header-inner{display:flex;align-items:center;gap:36px;height:76px}
.brand{display:flex;align-items:center;gap:10px;flex:none}
.brand__mark{font-family:var(--serif);font-weight:700;font-size:20px;letter-spacing:.08em;color:var(--ink)}
.brand__divider{width:1px;height:16px;background:var(--line)}
.brand__sub{font-size:13px;letter-spacing:.16em;color:var(--text-2)}
.nav-desktop{display:flex;align-items:center;gap:36px;margin-left:auto}
.nav-link{position:relative;display:inline-flex;align-items:center;min-height:44px;font-size:15px;font-weight:500;color:var(--text-2);transition:color .2s ease}
.nav-link::after{content:"";position:absolute;left:0;right:0;bottom:4px;height:2px;background:var(--coral);transform:scaleX(0);transform-origin:left center;transition:transform .22s ease}
.nav-link:hover{color:var(--ink)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--ink)}
.nav-link.is-active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:8px}
.nav-toggle{display:none;width:44px;height:44px;align-items:center;justify-content:center;background:transparent;border:1px solid var(--line);border-radius:var(--r-sm);cursor:pointer}
.nav-toggle span{display:block;width:18px;height:1.5px;background:var(--ink);position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:1.5px;background:var(--ink)}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* ---------- mobile nav ---------- */
.mobile-nav{
  position:fixed;inset:0;z-index:90;
  background:var(--paper);
  transform:translateX(100%);
  transition:transform .26s ease;
  display:flex;flex-direction:column;
  padding:16px 18px 32px;
  overflow-y:auto;
}
.mobile-nav.is-open{transform:translateX(0)}
.mobile-nav__head{display:flex;align-items:center;justify-content:space-between;height:56px;border-bottom:1px solid var(--line);margin-bottom:8px}
.mobile-nav__close{width:44px;height:44px;display:flex;align-items:center;justify-content:center;background:transparent;border:1px solid var(--line);border-radius:var(--r-sm);font-size:20px;line-height:1;color:var(--ink);cursor:pointer}
.mobile-nav a.m-link{display:flex;align-items:center;min-height:56px;font-size:16px;font-weight:500;color:var(--ink);border-bottom:1px solid var(--line)}
.mobile-nav a.m-link.is-active{color:var(--coral)}
.mobile-nav .btn{margin-top:24px;width:100%}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 26px;
  border-radius:var(--r-sm);border:1px solid transparent;
  font-size:15px;font-weight:500;line-height:1;
  cursor:pointer;white-space:nowrap;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn--primary{background:var(--coral);color:var(--white);box-shadow:0 1px 2px rgba(224,103,63,.22)}
.btn--primary:hover{background:var(--coral-hover);transform:translateY(-1px);box-shadow:0 10px 24px -14px rgba(224,103,63,.9)}
.btn--primary:active{transform:translateY(0);box-shadow:none}
.btn--ghost{background:transparent;border-color:var(--ink);color:var(--ink)}
.btn--ghost:hover{background:var(--ink);color:var(--paper)}
.btn--ghost:active{transform:translateY(0)}
.btn--light{background:transparent;border-color:rgba(250,247,241,.5);color:var(--paper)}
.btn--light:hover{background:rgba(250,247,241,.12);border-color:var(--paper)}
.btn--sm{min-height:44px;padding:0 18px;font-size:14px}
.btn:disabled{opacity:.4;cursor:not-allowed;transform:none}

/* ---------- shared bits ---------- */
.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:999px;border:1px solid var(--bamboo);
  font-size:12px;letter-spacing:.02em;color:var(--ink);
  background:rgba(76,140,125,.07);
}
.badge--coral{border-color:var(--coral);background:var(--coral-mist);color:var(--coral-hover)}
.eyebrow{display:inline-block;font-size:13px;letter-spacing:.14em;color:var(--coral);margin-bottom:14px}
.section{padding:96px 0;border-top:1px solid var(--line)}
.section-head{max-width:660px;margin-bottom:52px}
.section-head h2{font-size:clamp(24px,3vw,32px);line-height:1.45}
.section-head p{margin-top:14px;color:var(--text-2);font-size:15.5px;line-height:1.85}
.link-arrow{
  display:inline-flex;align-items:center;gap:8px;min-height:44px;
  font-size:15px;font-weight:500;color:var(--ink);
  border-bottom:1px solid var(--line);padding-bottom:2px;
  transition:color .2s ease,border-color .2s ease;
}
.link-arrow::after{content:"›";font-size:18px;line-height:1;transform:translateY(-1px)}
.link-arrow:hover{color:var(--coral);border-color:var(--coral)}

/* ---------- hero ---------- */
.hero{padding:88px 0 96px}
.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.hero-copy h1{
  margin-top:20px;
  font-size:clamp(30px,4.2vw,46px);
  line-height:1.35;
  letter-spacing:.01em;
}
.hero-sub{margin-top:20px;font-size:17px;line-height:1.85;color:var(--text-2);max-width:36em}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.hero-points{
  display:flex;gap:0;margin-top:38px;padding-top:24px;
  border-top:1px solid var(--line);
}
.hero-points li{flex:1;padding:0 22px;position:relative}
.hero-points li:first-child{padding-left:0}
.hero-points li + li::before{content:"";position:absolute;left:0;top:4px;bottom:4px;width:1px;background:var(--line)}
.hero-points strong{display:block;font-family:var(--num);font-variant-numeric:tabular-nums;font-size:18px;font-weight:600;color:var(--ink);line-height:1.5}
.hero-points span{display:block;font-size:13px;color:var(--text-3);line-height:1.6;margin-top:2px}
.hero-media{position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);background:var(--panel);box-shadow:var(--shadow-1)}
.hero-media img{width:100%;aspect-ratio:4/3;object-fit:cover}
.hero-media::after{content:"";position:absolute;inset:0;background:rgba(224,103,63,.08);pointer-events:none}
.hero-media figcaption{
  position:absolute;left:0;right:0;bottom:0;
  padding:14px 18px;font-size:13px;line-height:1.6;
  color:rgba(250,247,241,.92);
  background:linear-gradient(180deg,rgba(8,36,31,0) 0%,rgba(8,36,31,.78) 100%);
}

/* ---------- steps ---------- */
.steps-row{display:grid;grid-template-columns:repeat(3,1fr);gap:40px;position:relative}
.steps-row::before{content:"";position:absolute;left:0;right:0;top:26px;height:1px;background:var(--line)}
.step{position:relative;padding-top:62px}
.step__num{
  position:absolute;top:2px;left:0;
  font-family:var(--serif);font-size:44px;line-height:1;font-weight:600;
  color:rgba(224,103,63,.38);
  background:var(--paper);padding-right:16px;
}
.step h3{font-size:20px;line-height:1.5;margin-bottom:8px}
.step p{font-size:15px;line-height:1.85;color:var(--text-2);max-width:26em}

/* ---------- proof ---------- */
.proof-grid{display:grid;grid-template-columns:1.28fr 1fr;gap:32px;align-items:stretch}
.proof-main{
  position:relative;display:block;overflow:hidden;
  border-radius:var(--r-xl);border:1px solid var(--line);background:var(--panel);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.proof-main img{width:100%;height:100%;min-height:340px;object-fit:cover}
.proof-main__bar{position:absolute;left:0;right:0;bottom:0;padding:24px 26px;background:rgba(8,36,31,.86);color:rgba(250,247,241,.94)}
.proof-main__bar h3{color:var(--paper);font-size:21px;line-height:1.5;margin-bottom:8px}
.proof-main__bar p{font-size:14px;line-height:1.8;color:rgba(250,247,241,.76)}
.proof-main:hover{transform:translateY(-2px);border-color:var(--bamboo);box-shadow:var(--shadow-2)}
.proof-side{display:flex;flex-direction:column;gap:20px}
.proof-item{
  display:flex;gap:18px;align-items:flex-start;
  padding:18px;
  border:1px solid var(--line);border-radius:var(--r-md);background:var(--white);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.proof-item img{width:96px;height:72px;flex:none;object-fit:cover;border-radius:var(--r-sm);background:var(--panel);border:1px solid var(--line)}
.proof-item h3{font-size:17px;line-height:1.5;margin-bottom:6px}
.proof-item p{font-size:14px;line-height:1.75;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.proof-item .badge{margin-top:10px}
.proof-item:hover{transform:translateY(-2px);border-color:var(--bamboo);box-shadow:var(--shadow-2)}

/* ---------- news / cms ---------- */
.news-grid{display:grid;grid-template-columns:4fr 8fr;gap:56px;align-items:start}
.news-intro h2{font-size:clamp(24px,3vw,32px);line-height:1.45}
.news-intro p{margin-top:14px;font-size:15px;line-height:1.85;color:var(--text-2)}
.news-intro .link-arrow{margin-top:22px}
.news-list{min-height:120px}
.news-item{
  position:relative;display:block;
  padding:22px 0;
  border-top:1px solid var(--line);
  transition:padding-left .22s ease;
}
.news-item:last-child{border-bottom:1px solid var(--line)}
.news-item::before{
  content:"";position:absolute;left:0;top:22px;bottom:22px;width:2px;
  background:var(--coral);opacity:0;transition:opacity .22s ease;
}
.news-item:hover{padding-left:16px}
.news-item:hover::before{opacity:1}
.news-item__top{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:10px}
.news-item__cat{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;
  border-radius:999px;border:1px solid var(--bamboo);
  font-size:12px;color:var(--bamboo);letter-spacing:.02em;
  max-width:70%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.news-item__date{font-family:var(--num);font-variant-numeric:tabular-nums;font-size:13px;color:var(--text-3);flex:none}
.news-item__title{
  font-family:var(--sans);font-size:20px;font-weight:500;line-height:1.5;
  color:var(--ink);transition:color .2s ease;
}
.news-item:hover .news-item__title{color:var(--coral)}
.news-item__excerpt{
  margin:8px 0 0;font-size:14.5px;line-height:1.8;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-empty{
  display:flex;align-items:center;justify-content:center;
  min-height:180px;font-size:14px;color:var(--text-3);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}

/* ---------- faq ---------- */
.faq-wrap{display:grid;grid-template-columns:4fr 8fr;gap:56px;align-items:start}
.faq-list{max-width:none}
.faq-item{border-top:1px solid var(--line)}
.faq-item:last-child{border-bottom:1px solid var(--line)}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  width:100%;padding:20px 0;background:transparent;border:0;text-align:left;
  font-family:var(--sans);font-size:17px;font-weight:500;line-height:1.6;color:var(--ink);
  cursor:pointer;transition:color .2s ease;
}
.faq-q:hover{color:var(--coral)}
.faq-icon{
  position:relative;flex:none;width:20px;height:20px;
  transition:transform .2s ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--coral);
  transform:translate(-50%,-50%);
}
.faq-icon::before{width:14px;height:1.5px}
.faq-icon::after{width:1.5px;height:14px;transition:opacity .2s ease}
.faq-item.is-open .faq-icon{transform:rotate(180deg)}
.faq-item.is-open .faq-icon::after{opacity:0}
.faq-item.is-open .faq-q{color:var(--ink)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s ease}
.faq-a__inner{padding:0 0 24px;font-size:15px;line-height:1.85;color:var(--text-2);max-width:68ch}

/* ---------- cta ---------- */
.cta-section{padding:0 0 96px}
.cta-box{
  background:var(--ink-deep);
  border-radius:var(--r-xl);
  padding:56px 64px;
  display:grid;grid-template-columns:1.05fr 1fr;gap:56px;
  color:var(--paper);
  position:relative;overflow:hidden;
}
.cta-box::before{
  content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;
  border:1px solid rgba(250,247,241,.12);border-radius:50%;pointer-events:none;
}
.cta-copy h2{color:var(--paper);font-size:clamp(24px,3vw,32px);line-height:1.45}
.cta-copy p{margin-top:16px;font-size:15px;line-height:1.85;color:rgba(250,247,241,.72);max-width:34em}
.cta-copy .cta-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.cta-tags span{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:999px;border:1px solid rgba(250,247,241,.28);
  font-size:12px;color:rgba(250,247,241,.8);
}
.cta-form{display:flex;flex-direction:column;gap:16px}
.field label{display:block;font-size:13px;color:rgba(250,247,241,.68);margin-bottom:8px}
.field input,.field textarea{
  width:100%;min-height:46px;padding:0 14px;
  border-radius:var(--r-sm);border:1px solid var(--line);
  background:var(--white);color:var(--text);
  font-family:inherit;font-size:15px;line-height:1.6;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field textarea{min-height:96px;padding:12px 14px;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3)}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--bamboo);box-shadow:0 0 0 2px rgba(76,140,125,.18)}
.cta-form .btn{width:100%}
.form-note{min-height:20px;font-size:13px;line-height:1.7;color:rgba(250,247,241,.7);margin:0}
.form-note.is-ok{color:#9FD3B6}
.cta-foot{
  grid-column:1 / -1;
  margin-top:8px;padding-top:22px;
  border-top:1px solid rgba(250,247,241,.12);
  font-size:12.5px;line-height:1.8;color:rgba(250,247,241,.58);
}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:rgba(250,247,241,.88)}
.footer-top{border-top:1px solid rgba(255,255,255,.12);padding:64px 0 44px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:48px}
.footer-brand__logo{display:flex;align-items:center;gap:10px}
.footer-brand__mark{font-family:var(--serif);font-weight:700;font-size:20px;letter-spacing:.08em;color:var(--paper)}
.footer-brand__divider{width:1px;height:16px;background:rgba(250,247,241,.28)}
.footer-brand__sub{font-size:13px;letter-spacing:.16em;color:rgba(250,247,241,.66)}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.9;color:rgba(250,247,241,.66);max-width:30em}
.footer-col h4{font-family:var(--sans);font-size:13px;font-weight:500;letter-spacing:.06em;color:rgba(250,247,241,.6);margin-bottom:18px}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col a,.footer-col span{font-size:14px;line-height:1.7;color:rgba(250,247,241,.86);transition:color .2s ease}
.footer-col a:hover{color:var(--coral);text-decoration:underline;text-underline-offset:4px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0 28px;
  display:flex;flex-wrap:wrap;align-items:center;gap:14px 28px;
  font-size:13px;color:rgba(250,247,241,.6);
}
.footer-bottom .to-top{margin-left:auto;color:rgba(250,247,241,.8);min-height:44px;display:inline-flex;align-items:center;transition:color .2s ease}
.footer-bottom .to-top:hover{color:var(--coral);text-decoration:underline;text-underline-offset:4px}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .container{padding:0 22px}
  .hero-grid{gap:40px}
  .cta-box{padding:48px 44px;gap:40px}
}
@media (max-width:1023px){
  .section{padding:80px 0}
  .hero{padding:72px 0 80px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-media img{aspect-ratio:16/10}
  .proof-grid{grid-template-columns:1fr}
  .proof-main img{min-height:280px}
  .news-grid,.faq-wrap{grid-template-columns:1fr;gap:32px}
  .cta-box{grid-template-columns:1fr;padding:44px 36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
}
@media (max-width:900px){
  .nav-desktop{display:none}
  .header-actions .btn{display:none}
  .nav-toggle{display:flex}
  .header-inner{height:64px;gap:16px}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .section{padding:48px 0}
  .hero{padding:44px 0 48px}
  .section-head{margin-bottom:32px}
  .steps-row{grid-template-columns:1fr;gap:0}
  .steps-row::before{left:11px;right:auto;top:8px;bottom:12px;width:2px;height:auto}
  .step{padding:0 0 32px 42px}
  .step:last-child{padding-bottom:0}
  .step__num{position:static;display:block;font-size:30px;background:none;padding:0;margin-bottom:8px}
  .hero-points{flex-wrap:wrap;gap:18px 0}
  .hero-points li{flex:1 1 33%;padding:0 14px}
  .hero-points li:first-child{padding-left:0}
  .hero-cta .btn{width:100%}
  .proof-item{flex-direction:column;gap:12px}
  .proof-item img{width:100%;height:150px}
  .news-item__title{font-size:18px}
  .cta-box{padding:36px 22px;border-radius:var(--r-lg)}
  .cta-section{padding:0 0 48px}
  .footer-top{padding:44px 0 32px}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px}
  .footer-bottom .to-top{margin-left:0}
}
@media (max-width:480px){
  body{font-size:15px}
  .hero-points li{flex:1 1 100%;padding:0}
  .hero-points li + li::before{display:none}
  .hero-points li + li{padding-top:10px;border-top:1px dashed var(--line)}
  .news-item__cat{font-size:12px}
}

/* roulang page: category1 */
:root{
  --ink:#0F3A34;
  --ink-deep:#08241F;
  --coral:#E0673F;
  --coral-dark:#C2522D;
  --coral-mist:#F7E3DA;
  --bamboo:#4C8C7D;
  --bg:#FAF7F1;
  --panel:#F2EDE4;
  --white:#FFFDF9;
  --line:#DCD4C6;
  --text:#202724;
  --text-2:#5A6560;
  --text-3:#8A938E;
  --success:#3F7D5A;
  --error:#B4453A;
  --radius-s:4px;
  --radius-m:6px;
  --radius-l:12px;
  --pill:999px;
  --shadow-1:0 1px 2px rgba(16,42,38,.05);
  --shadow-2:0 10px 28px -12px rgba(16,42,38,.18);
  --font-serif:"Noto Serif SC","Songti SC","Source Han Serif SC",serif;
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  --ease:200ms ease;
  --section-y:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color var(--ease),border-color var(--ease),background-color var(--ease)}
button{font-family:inherit;cursor:pointer}
input,textarea,select{font-family:inherit;font-size:15px}
h1,h2,h3,h4{font-family:var(--font-serif);font-weight:600;letter-spacing:.01em;color:var(--ink);margin:0}
p{margin:0}
ul,ol,dl{margin:0}
a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible{
  outline:2px solid var(--bamboo);
  outline-offset:3px;
  border-radius:var(--radius-s);
}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 24px}
.hairline{height:1px;background:var(--line);border:0;margin:0}

/* ---------- Header / Nav ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--bg);
  border-bottom:1px solid var(--line);
  transition:background-color var(--ease),box-shadow var(--ease),backdrop-filter var(--ease);
}
.site-header.is-scrolled{
  background:rgba(250,247,241,.92);
  backdrop-filter:saturate(140%) blur(8px);
  box-shadow:0 1px 2px rgba(16,42,38,.06);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  min-height:76px;gap:24px;
}
.brand{display:inline-flex;align-items:center;gap:10px;min-height:44px}
.brand__mark{
  font-family:var(--font-serif);font-weight:700;font-size:22px;color:var(--ink);letter-spacing:.02em;
}
.brand__divider{width:1px;height:18px;background:var(--line)}
.brand__sub{font-size:13px;color:var(--text-2);letter-spacing:.08em}
.brand:hover .brand__mark{color:var(--coral)}
.nav-desktop{display:flex;align-items:center;gap:36px}
.nav-link{
  position:relative;font-size:15px;font-weight:500;color:var(--text-2);
  padding:6px 0;min-height:44px;display:inline-flex;align-items:center;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:2px;height:2px;
  background:var(--coral);transform:scaleX(0);transform-origin:left;
  transition:transform var(--ease);
}
.nav-link:hover{color:var(--ink)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--ink);font-weight:700}
.nav-link.is-active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:var(--radius-s);
  background:transparent;position:relative;align-items:center;justify-content:center;
}
.nav-toggle span,.nav-toggle span::before{
  content:"";position:absolute;left:12px;right:12px;height:1.5px;background:var(--ink);
  transition:transform var(--ease),opacity var(--ease);
}
.nav-toggle span{top:50%;margin-top:-1px}
.nav-toggle span::before{left:0;right:0;top:-7px}
.nav-toggle span::after{content:"";position:absolute;left:0;right:0;height:1.5px;background:var(--ink);top:7px}
.nav-toggle:hover{background:var(--panel)}

/* mobile panel */
.mobile-nav{
  position:fixed;inset:0;z-index:90;background:var(--bg);
  display:none;flex-direction:column;padding:0;
}
.mobile-nav.is-open{display:flex}
.mobile-nav__head{
  display:flex;align-items:center;justify-content:space-between;
  min-height:64px;padding:0 18px;border-bottom:1px solid var(--line);
}
.mobile-nav__close{
  width:44px;height:44px;border:1px solid var(--line);background:transparent;
  border-radius:var(--radius-s);color:var(--ink);font-size:13px;
}
.mobile-nav__close:hover{background:var(--panel)}
.mobile-nav nav{display:flex;flex-direction:column;padding:8px 0}
.mobile-nav nav a{
  min-height:56px;display:flex;align-items:center;padding:0 18px;
  font-size:16px;color:var(--ink);border-bottom:1px solid var(--line);
}
.mobile-nav nav a.is-active{color:var(--coral);font-weight:700}
.mobile-nav nav a:hover{background:var(--panel)}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--radius-s);
  font-size:15px;font-weight:500;border:1px solid transparent;
  transition:background-color var(--ease),color var(--ease),transform var(--ease),box-shadow var(--ease),border-color var(--ease);
  min-height:44px;
}
.btn--primary{background:var(--coral);color:var(--bg)}
.btn--primary:hover{background:var(--coral-dark);transform:translateY(-1px)}
.btn--primary:active{transform:translateY(0)}
.btn--ghost{background:transparent;border-color:var(--ink);color:var(--ink)}
.btn--ghost:hover{background:var(--ink);color:var(--bg)}
.btn--sm{height:40px;padding:0 18px;font-size:14px}
.btn--block{width:100%}
.text-link{
  display:inline-flex;align-items:center;gap:6px;min-height:44px;
  color:var(--ink);font-size:15px;border-bottom:1px solid var(--ink);padding-bottom:1px;
}
.text-link:hover{color:var(--coral);border-bottom-color:var(--coral)}
.muted-link{color:var(--text-2);border-bottom-color:var(--line)}
.muted-link:hover{color:var(--coral);border-bottom-color:var(--coral)}

/* ---------- Badges ---------- */
.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:var(--pill);font-size:12px;letter-spacing:.02em;
  border:1px solid var(--bamboo);color:var(--bamboo);background:transparent;
}
.badge--coral{border-color:var(--coral);color:var(--coral)}
.eyebrow{
  font-size:13px;letter-spacing:.08em;color:var(--text-3);
}

/* ---------- Page hero ---------- */
.page-hero{
  padding:56px 0 0;
  border-bottom:1px solid var(--line);
}
.page-hero__grid{
  display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);
  gap:48px;align-items:center;padding-bottom:56px;
}
.breadcrumb{list-style:none;display:flex;flex-wrap:wrap;gap:8px;padding:0;margin:0 0 22px;font-size:13px;color:var(--text-3)}
.breadcrumb li{display:inline-flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"›";color:var(--text-3)}
.breadcrumb a{color:var(--text-2)}
.breadcrumb a:hover{color:var(--coral)}
.breadcrumb [aria-current="page"]{color:var(--text-3)}
.page-hero h1{
  font-size:clamp(30px,4.2vw,46px);line-height:1.35;margin:16px 0 18px;max-width:19em;
}
.page-hero__lead{
  font-size:17px;line-height:1.9;color:var(--text-2);max-width:34em;
}
.page-hero__actions{display:flex;flex-wrap:wrap;align-items:center;gap:24px;margin-top:28px}
.page-hero__media{
  position:relative;border-radius:10px;overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--shadow-1);background:var(--panel);
}
.page-hero__media img{width:100%;aspect-ratio:4/3;object-fit:cover}
.page-hero__media::after{
  content:"";position:absolute;inset:0;background:rgba(224,103,63,.07);pointer-events:none;
}

/* ---------- Section basics ---------- */
.section{padding:var(--section-y) 0}
.section--tight{padding:64px 0}
.section-head{margin-bottom:36px}
.section-head h2{font-size:clamp(24px,3vw,32px);line-height:1.45}
.section-head p{color:var(--text-2);margin-top:10px;max-width:38em}

/* ---------- Two column body ---------- */
.split{
  display:grid;grid-template-columns:minmax(0,2fr) minmax(0,1fr);
  gap:56px;align-items:start;
}
.prose-block + .prose-block{margin-top:44px}
.prose-block h2{
  font-size:clamp(22px,2.4vw,28px);line-height:1.45;margin-bottom:16px;
  padding-left:12px;border-left:3px solid var(--coral);
}
.prose-block h3{font-size:20px;line-height:1.5;margin:26px 0 10px}
.prose-block p{color:var(--text-2);margin-bottom:14px;max-width:36em}
.prose-block p:last-child{margin-bottom:0}
.prose-block strong{color:var(--ink);font-weight:500}

.step-list{list-style:none;padding:0;margin:8px 0 0;counter-reset:step}
.step-list li{
  counter-increment:step;position:relative;padding:14px 0 14px 42px;
  border-top:1px solid var(--line);color:var(--text-2);
}
.step-list li:last-child{border-bottom:1px solid var(--line)}
.step-list li::before{
  content:counter(step,decimal-leading-zero);
  position:absolute;left:0;top:14px;
  font-family:var(--font-serif);font-size:15px;color:var(--coral);font-weight:700;
}
.step-list b{color:var(--ink);font-weight:500}

.dot-list{list-style:none;padding:0;margin:12px 0 0}
.dot-list li{
  position:relative;padding-left:20px;margin-bottom:10px;color:var(--text-2);
}
.dot-list li::before{
  content:"";position:absolute;left:0;top:11px;width:6px;height:6px;
  background:var(--coral);border-radius:1px;
}

/* ---------- Sidebar ---------- */
.sidebar{position:sticky;top:96px;display:flex;flex-direction:column;gap:24px}
.side-card{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-m);
  border-left:3px solid var(--coral);padding:22px 22px 20px;
}
.side-card h3{font-size:16px;margin-bottom:12px}
.side-card ul{list-style:none;padding:0;margin:0}
.side-card li{
  position:relative;padding-left:16px;font-size:14px;line-height:1.7;
  color:var(--text-2);margin-bottom:10px;
}
.side-card li:last-child{margin-bottom:0}
.side-card li::before{
  content:"";position:absolute;left:0;top:9px;width:6px;height:1px;background:var(--bamboo);
}
.toc{background:transparent;border:0;padding:0}
.toc h3{font-size:13px;letter-spacing:.06em;color:var(--text-3);margin-bottom:10px;font-family:var(--font-sans);font-weight:500}
.toc ol{list-style:none;padding:0;margin:0;border-top:1px solid var(--line)}
.toc ol li{border-bottom:1px solid var(--line);padding:0}
.toc ol a{
  display:block;padding:12px 0 12px 12px;font-size:14px;color:var(--text-2);
  border-left:2px solid transparent;
}
.toc ol a:hover{color:var(--ink);border-left-color:var(--coral);background:var(--white)}
.side-cta{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:48px;border:1px solid var(--ink);border-radius:var(--radius-s);
  color:var(--ink);font-size:15px;transition:background-color var(--ease),color var(--ease);
}
.side-cta:hover{background:var(--ink);color:var(--bg)}

/* ---------- Definition list ---------- */
.def-list{
  margin:0;border-top:1px solid var(--line);
}
.def-row{
  display:grid;grid-template-columns:30% minmax(0,1fr);gap:24px;
  padding:20px 8px;border-bottom:1px solid var(--line);
  transition:background-color var(--ease);
}
.def-row:hover{background:#FAF7F1}
.def-row dt{
  font-family:var(--font-serif);font-weight:600;font-size:17px;color:var(--ink);
  display:flex;align-items:baseline;gap:10px;
}
.def-row dt span{
  font-family:var(--font-sans);font-size:12px;color:var(--coral);font-weight:500;letter-spacing:.04em;
}
.def-row dd{margin:0;color:var(--text-2);font-size:15.5px;line-height:1.85}

/* ---------- FAQ ---------- */
.faq{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  list-style:none;cursor:pointer;position:relative;
  padding:18px 44px 18px 0;font-size:17px;font-weight:500;color:var(--ink);
  transition:color var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"";position:absolute;right:8px;top:50%;width:16px;height:16px;margin-top:-8px;
  background:
    linear-gradient(var(--coral),var(--coral)) center/16px 1.5px no-repeat,
    linear-gradient(var(--coral),var(--coral)) center/1.5px 16px no-repeat;
  transition:transform var(--ease);
}
.faq-item[open] summary::after{
  background:linear-gradient(var(--coral),var(--coral)) center/16px 1.5px no-repeat;
}
.faq-item summary:hover{color:var(--coral)}
.faq-body{padding:0 44px 24px 0;color:var(--text-2);max-width:68ch;line-height:1.85}
.faq-body p{margin:0}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--ink-deep);border-radius:12px;padding:56px 64px;color:var(--bg);
  display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:48px;align-items:center;
}
.cta-band h2{color:var(--bg);font-size:clamp(24px,3vw,32px);line-height:1.45}
.cta-band p{color:rgba(250,247,241,.7);margin-top:14px;max-width:30em;font-size:15.5px}
.cta-form{display:flex;flex-direction:column;gap:14px}
.field label{display:block;font-size:13px;color:rgba(250,247,241,.72);margin-bottom:6px;letter-spacing:.02em}
.field input{
  width:100%;height:46px;padding:0 14px;border-radius:var(--radius-s);
  border:1px solid var(--line);background:var(--white);color:var(--text);
  transition:border-color var(--ease),box-shadow var(--ease);
}
.field input::placeholder{color:var(--text-3)}
.field input:focus{
  outline:none;border-color:var(--bamboo);box-shadow:0 0 0 3px rgba(76,140,125,.18);
}
.cta-form .btn--primary{width:100%}
.form-note{font-size:12.5px;color:rgba(250,247,241,.6);line-height:1.7}
.form-msg{font-size:13px;color:var(--bg);min-height:18px}
.form-msg.is-error{color:#F0A79B}
.form-msg.is-ok{color:#9FD4B7}
.cta-note{
  margin-top:28px;font-size:12.5px;color:rgba(250,247,241,.6);line-height:1.8;
  border-top:1px solid rgba(250,247,241,.12);padding-top:16px;
}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink);color:rgba(250,247,241,.88);margin-top:var(--section-y)}
.footer-top{padding:64px 0 48px;border-top:1px solid rgba(255,255,255,.12)}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:48px}
.footer-brand__logo{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand__mark{font-family:var(--font-serif);font-size:22px;font-weight:700;color:var(--bg)}
.footer-brand__divider{width:1px;height:18px;background:rgba(250,247,241,.28)}
.footer-brand__sub{font-size:13px;color:rgba(250,247,241,.66);letter-spacing:.08em}
.footer-brand p{font-size:14px;line-height:1.85;color:rgba(250,247,241,.66);max-width:30em}
.footer-col h4{
  font-family:var(--font-sans);font-size:13px;font-weight:500;letter-spacing:.06em;
  color:rgba(250,247,241,.6);margin-bottom:14px;
}
.footer-col ul{list-style:none;padding:0;margin:0}
.footer-col li{margin-bottom:10px;font-size:14px;color:rgba(250,247,241,.66)}
.footer-col a{font-size:14px;color:rgba(250,247,241,.88);min-height:24px;display:inline-block}
.footer-col a:hover{color:var(--coral);text-decoration:underline;text-underline-offset:4px}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;gap:16px 28px;
  padding:20px 0 28px;border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;color:rgba(250,247,241,.6);
}
.to-top{margin-left:auto;color:rgba(250,247,241,.8);min-height:44px;display:inline-flex;align-items:center}
.to-top:hover{color:var(--coral);text-decoration:underline;text-underline-offset:4px}

/* ---------- Responsive ---------- */
@media (max-width:1279px){
  :root{--section-y:80px}
  .container{padding:0 24px}
  .split{gap:40px}
  .cta-band{padding:48px}
}
@media (max-width:1023px){
  :root{--section-y:64px}
  .nav-desktop{display:none}
  .nav-toggle{display:inline-flex}
  .page-hero__grid{grid-template-columns:1fr;gap:32px}
  .split{grid-template-columns:1fr;gap:40px}
  .sidebar{position:static;top:auto}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .cta-band{grid-template-columns:1fr;gap:32px;padding:40px}
  .def-row{grid-template-columns:36% minmax(0,1fr);gap:18px}
}
@media (max-width:767px){
  :root{--section-y:48px}
  .container{padding:0 18px}
  .header-inner{min-height:64px}
  .brand__mark{font-size:20px}
  .nav-toggle{display:inline-flex}
  .header-actions .btn--primary{display:none}
  .btn{height:46px;padding:0 22px}
  .btn--block-m{width:100%}
  .page-hero{padding-top:36px}
  .page-hero__grid{padding-bottom:40px}
  .page-hero__actions{gap:16px}
  .def-row{grid-template-columns:1fr;gap:6px;padding:18px 4px}
  .def-row dt{font-size:16px}
  .faq-body{padding-right:16px}
  .cta-band{padding:32px 24px;border-radius:10px}
  .footer-top{padding:48px 0 36px}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px}
  .to-top{margin-left:0}
  .side-card{padding:18px}
  .prose-block h2{font-size:22px}
}
@media (max-width:480px){
  body{font-size:16px}
  .page-hero h1{font-size:28px}
  .badge{font-size:12px}
  .cta-band h2{font-size:23px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
}

/* roulang page: article */
:root{
  --ink:#0F3A34;
  --ink-deep:#08241F;
  --coral:#E0673F;
  --coral-dark:#C2522D;
  --coral-soft:#F7E3DA;
  --bamboo:#4C8C7D;
  --bg:#FAF7F1;
  --panel:#F2EDE4;
  --white:#FFFDF9;
  --line:#DCD4C6;
  --text:#202724;
  --text-2:#5A6560;
  --text-3:#8A938E;
  --success:#3F7D5A;
  --error:#B4453A;
  --radius-sm:4px;
  --radius:6px;
  --radius-lg:12px;
  --shadow-1:0 1px 2px rgba(16,42,38,.05);
  --shadow-2:0 10px 28px -12px rgba(16,42,38,.18);
  --container:1180px;
  --ease:200ms ease;
  --font-serif:"Noto Serif SC","Songti SC","STSong","SimSun",Georgia,serif;
  --font-sans:"Noto Sans SC",-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--bamboo);text-decoration:none;transition:color var(--ease)}
a:hover{color:var(--coral)}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;font-weight:600;letter-spacing:.01em}
p{margin:0 0 1em}
ul,ol{margin:0;padding:0}
:focus-visible{outline:2px solid var(--bamboo);outline-offset:3px;border-radius:2px}
.skip-link{
  position:absolute;left:-9999px;top:0;z-index:999;
  background:var(--ink);color:var(--white);padding:10px 18px;border-radius:0 0 var(--radius-sm) 0;
}
.skip-link:focus{left:0;color:var(--white)}
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:90;
  background:rgba(250,247,241,.92);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--ease),background var(--ease);
}
.site-header.is-scrolled{box-shadow:0 6px 20px -16px rgba(16,42,38,.5)}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  height:76px;gap:24px;
}
.brand{
  display:inline-flex;align-items:center;gap:10px;
  color:var(--ink);font-family:var(--font-serif);
  font-size:20px;font-weight:600;letter-spacing:.02em;
  min-height:44px;
}
.brand:hover{color:var(--ink)}
.brand__mark{display:inline-block}
.brand__divider{width:1px;height:18px;background:var(--line);display:inline-block}
.brand__sub{
  font-family:var(--font-sans);
  font-size:13px;font-weight:500;color:var(--text-2);
  letter-spacing:.14em;
}
.nav-desktop{display:flex;align-items:center;gap:36px}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  min-height:44px;padding:0;
  font-size:15px;font-weight:500;color:var(--text-2);
  transition:color var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:10px;height:2px;
  background:var(--coral);transform:scaleX(0);transform-origin:left center;
  transition:transform var(--ease);
}
.nav-link:hover{color:var(--ink)}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--ink)}
.header-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;width:44px;height:44px;align-items:center;justify-content:center;
  background:transparent;border:1px solid var(--line);border-radius:var(--radius-sm);
  cursor:pointer;transition:border-color var(--ease),background var(--ease);
}
.nav-toggle:hover{border-color:var(--ink);background:var(--panel)}
.nav-toggle span{
  display:block;position:relative;width:18px;height:2px;background:var(--ink);
}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);
  transition:transform var(--ease);
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* mobile nav */
.mobile-nav{
  position:fixed;inset:0;z-index:120;
  background:var(--bg);
  display:flex;flex-direction:column;
  padding:16px 18px 32px;
  transform:translateY(-8px);
  opacity:0;visibility:hidden;
  transition:opacity 220ms ease,transform 220ms ease,visibility 220ms;
}
.mobile-nav.is-open{opacity:1;visibility:visible;transform:translateY(0)}
.mobile-nav__head{display:flex;align-items:center;justify-content:space-between;height:56px}
.mobile-nav__close{
  width:44px;height:44px;background:transparent;border:1px solid var(--line);
  border-radius:var(--radius-sm);font-size:22px;line-height:1;color:var(--ink);
  cursor:pointer;transition:background var(--ease),border-color var(--ease);
}
.mobile-nav__close:hover{background:var(--panel);border-color:var(--ink)}
.mobile-nav nav{display:flex;flex-direction:column;margin-top:12px;border-top:1px solid var(--line)}
.mobile-nav nav a{
  display:flex;align-items:center;min-height:56px;padding:0 4px;
  font-size:16px;font-weight:500;color:var(--ink);
  border-bottom:1px solid var(--line);
}
.mobile-nav nav a.is-active{color:var(--coral)}
.mobile-nav .btn{margin-top:24px;width:100%}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;
  border-radius:var(--radius-sm);border:1px solid transparent;
  font-size:15px;font-weight:500;letter-spacing:.02em;
  cursor:pointer;text-decoration:none;
  transition:background var(--ease),color var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease);
}
.btn:focus-visible{outline:2px solid var(--bamboo);outline-offset:3px}
.btn--primary{background:var(--coral);color:var(--white)}
.btn--primary:hover{background:var(--coral-dark);color:var(--white);transform:translateY(-1px)}
.btn--primary:active{transform:translateY(0)}
.btn--ghost{background:transparent;border-color:var(--ink);color:var(--ink)}
.btn--ghost:hover{background:var(--ink);color:var(--white)}
.btn--onDark{background:var(--coral);color:var(--white)}
.btn--onDark:hover{background:var(--coral-dark);color:var(--white);transform:translateY(-1px)}
.btn--sm{height:38px;padding:0 18px;font-size:14px}
.link-text{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--ink);font-size:15px;font-weight:500;
  border-bottom:1px solid currentColor;padding-bottom:2px;
  transition:color var(--ease),border-color var(--ease);
}
.link-text:hover{color:var(--coral)}

/* ---------- breadcrumb ---------- */
.breadcrumb{padding:28px 0 0}
.breadcrumb ol{list-style:none;display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.breadcrumb li{font-size:13px;color:var(--text-3);line-height:1.6}
.breadcrumb li+li::before{content:"›";margin-right:8px;color:var(--line)}
.breadcrumb a{color:var(--text-3)}
.breadcrumb a:hover{color:var(--coral)}
.breadcrumb li[aria-current]{
  color:var(--text-2);max-width:100%;
  display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;
}

/* ---------- article layout ---------- */
.article-wrap{padding:32px 0 0}
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,760px);
  gap:48px;
  justify-content:center;
}
@media (min-width:1200px){
  .article-layout{grid-template-columns:minmax(0,760px) 240px}
}
.article-header{padding-bottom:28px;border-bottom:1px solid var(--line)}
.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border:1px solid var(--bamboo);border-radius:999px;
  font-size:12px;letter-spacing:.02em;color:var(--bamboo);
  background:transparent;
}
.article-header h1{
  margin:16px 0 0;
  font-family:var(--font-serif);
  font-size:clamp(28px,4.2vw,42px);
  line-height:1.4;
  letter-spacing:.01em;
  color:var(--ink);
  max-width:22em;
  overflow-wrap:break-word;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  margin-top:20px;
  font-size:13px;color:var(--text-3);
  font-variant-numeric:tabular-nums;
}
.article-meta .dot{color:var(--line)}

/* ---------- article body ---------- */
.article-body{
  margin-top:36px;
  font-size:17px;
  line-height:1.9;
  color:var(--text);
  overflow-wrap:break-word;
}
.article-body p{margin:0 0 1.25em}
.article-body h2{
  font-family:var(--font-serif);
  font-size:clamp(22px,2.6vw,28px);
  line-height:1.5;
  color:var(--ink);
  margin:2.2em 0 .8em;
  padding-left:12px;
  border-left:3px solid var(--coral);
  scroll-margin-top:100px;
}
.article-body h3{
  font-size:20px;line-height:1.5;color:var(--ink);
  margin:1.8em 0 .6em;font-weight:600;
  scroll-margin-top:100px;
}
.article-body h4{
  font-size:17px;color:var(--ink);margin:1.5em 0 .5em;
}
.article-body ul,.article-body ol{margin:0 0 1.25em;padding-left:1.4em}
.article-body li{margin:.4em 0}
.article-body ul li::marker{color:var(--coral)}
.article-body ol li::marker{color:var(--coral);font-variant-numeric:tabular-nums}
.article-body blockquote{
  margin:1.6em 0;padding:18px 22px;
  background:var(--panel);
  border-left:3px solid var(--coral);
  border-radius:0 var(--radius) var(--radius) 0;
  color:var(--text-2);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:8px;margin:1.6em 0;width:100%}
.article-body figure{margin:1.6em 0}
.article-body figcaption{
  margin-top:10px;font-size:13px;line-height:1.7;color:var(--text-3);text-align:center;
}
.article-body a{color:var(--bamboo);text-decoration:underline;text-underline-offset:4px}
.article-body a:hover{color:var(--coral)}
.article-body table{
  width:100%;border-collapse:collapse;font-size:15px;line-height:1.7;
  margin:1.6em 0;display:block;overflow-x:auto;
}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left}
.article-body th{background:var(--panel);color:var(--ink);font-weight:600;white-space:nowrap}
.article-body code{
  background:var(--panel);padding:2px 6px;border-radius:var(--radius-sm);
  font-size:.92em;
}
.article-body hr{border:none;border-top:1px solid var(--line);margin:2.4em 0}

.article-empty{
  margin-top:36px;min-height:180px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  color:var(--text-3);font-size:14px;
}
.article-empty p{margin:0}
.article-empty .link-text{font-size:14px;color:var(--ink)}

/* ---------- toc ---------- */
.article-aside{display:none}
@media (min-width:1200px){.article-aside{display:block}}
.toc{position:sticky;top:96px;border-top:1px solid var(--line);padding-top:16px}
.toc__title{
  font-size:13px;font-weight:600;letter-spacing:.1em;
  color:var(--text-3);margin-bottom:12px;
  font-family:var(--font-sans);
}
.toc ul{list-style:none}
.toc li{margin:0}
.toc a{
  display:block;padding:7px 0 7px 12px;
  font-size:14px;line-height:1.6;color:var(--text-2);
  border-left:2px solid transparent;
  transition:color var(--ease),border-color var(--ease);
}
.toc a:hover{color:var(--ink)}
.toc a.is-current{color:var(--coral);border-left-color:var(--coral);font-weight:500}

/* ---------- related ---------- */
.article-related{margin-top:56px;padding-top:28px;border-top:1px solid var(--line)}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:32px}
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border:1px solid var(--line);border-radius:999px;
  font-size:12px;color:var(--text-2);background:transparent;
  transition:border-color var(--ease),color var(--ease),background var(--ease);
}
.tag:hover{border-color:var(--coral);color:var(--coral);background:var(--coral-soft)}
.related-title{
  font-family:var(--font-serif);font-size:20px;color:var(--ink);
  margin-bottom:16px;font-weight:600;
}
.related-list{
  list-style:none;display:grid;grid-template-columns:1fr 1fr;gap:0 32px;
  margin-bottom:32px;
}
.related-list li{border-top:1px solid var(--line)}
.related-list a{
  display:flex;align-items:baseline;justify-content:space-between;gap:16px;
  padding:14px 0;font-size:15px;color:var(--ink);line-height:1.6;
  transition:color var(--ease),padding-left var(--ease);
}
.related-list a:hover{color:var(--coral);padding-left:6px}
.related-list time{
  font-size:13px;color:var(--text-3);font-variant-numeric:tabular-nums;white-space:nowrap;
}

/* ---------- cta ---------- */
.cta-section{padding:80px 0 96px}
.cta-band{
  background:var(--ink-deep);
  border-radius:var(--radius-lg);
  padding:48px 40px;
  color:var(--white);
  display:flex;align-items:center;gap:36px;flex-wrap:wrap;
}
.cta-band__media{
  width:200px;flex:0 0 200px;border-radius:10px;overflow:hidden;
  display:none;
}
.cta-band__media img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3}
.cta-band__text{flex:1 1 320px;min-width:0}
.cta-band__text h2{
  font-family:var(--font-serif);
  font-size:clamp(22px,2.6vw,30px);
  line-height:1.45;color:var(--white);margin-bottom:12px;
}
.cta-band__text p{
  margin:0;font-size:15px;line-height:1.8;color:rgba(250,247,241,.7);
  max-width:56ch;
}
.cta-band__actions{display:flex;flex-wrap:wrap;gap:12px}
.cta-band__note{
  width:100%;margin:8px 0 0;
  font-size:12.5px;line-height:1.7;color:rgba(250,247,241,.6);
  border-top:1px solid rgba(255,255,255,.12);padding-top:16px;
}
@media (min-width:900px){
  .cta-band{padding:56px 64px}
  .cta-band__media{display:block}
}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:rgba(250,247,241,.88);margin-top:0}
.footer-top{padding:64px 0 48px;border-top:1px solid rgba(255,255,255,.12)}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:40px;
}
.footer-brand__logo{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-serif);font-size:20px;font-weight:600;color:var(--white);
  margin-bottom:16px;
}
.footer-brand__divider{width:1px;height:18px;background:rgba(255,255,255,.28)}
.footer-brand__sub{
  font-family:var(--font-sans);font-size:13px;font-weight:500;
  letter-spacing:.14em;color:rgba(250,247,241,.7);
}
.footer-brand p{
  margin:0;font-size:14px;line-height:1.85;color:rgba(250,247,241,.7);max-width:34ch;
}
.footer-col h4{
  font-size:13px;font-weight:600;letter-spacing:.1em;
  color:rgba(250,247,241,.6);margin-bottom:16px;
}
.footer-col ul{list-style:none}
.footer-col li{margin-bottom:10px}
.footer-col a,.footer-col span{
  font-size:14px;line-height:1.7;color:rgba(250,247,241,.88);
}
.footer-col a:hover{color:var(--coral);text-decoration:underline;text-underline-offset:4px}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;gap:16px 24px;
  padding:20px 24px 28px;
  border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;color:rgba(250,247,241,.6);
  font-variant-numeric:tabular-nums;
}
.footer-bottom .to-top{margin-left:auto;color:rgba(250,247,241,.88);font-size:13px}
.footer-bottom .to-top:hover{color:var(--coral);text-decoration:underline;text-underline-offset:4px}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  .nav-desktop{gap:24px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .header-inner{height:64px}
  .nav-desktop{display:none}
  .header-actions .btn--sm{display:none}
  .nav-toggle{display:inline-flex}
  .brand{font-size:18px}
  .brand__sub{font-size:12px}
  .breadcrumb{padding-top:20px}
  .article-wrap{padding-top:24px}
  .article-header{padding-bottom:22px}
  .article-body{font-size:16px;margin-top:28px}
  .article-body h2{margin-top:1.9em}
  .related-list{grid-template-columns:1fr;gap:0}
  .cta-section{padding:56px 0 72px}
  .cta-band{padding:36px 24px;border-radius:10px}
  .btn{height:48px}
  .btn--sm{height:40px}
  .footer-top{padding:48px 0 36px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{padding:18px 18px 26px;gap:10px 18px}
  .footer-bottom .to-top{margin-left:0}
}
@media (max-width:480px){
  .article-body{font-size:16px}
  .article-header h1{font-size:28px}
  .badge,.tag{font-size:12px}
  .cta-band__text p{font-size:14px}
}

/* roulang page: category2 */
:root{
  --ink:#0F3A34;
  --ink-deep:#08241F;
  --coral:#E0673F;
  --coral-dark:#C2522D;
  --coral-soft:#F7E3DA;
  --bamboo:#4C8C7D;
  --bg:#FAF7F1;
  --panel:#F2EDE4;
  --paper:#FFFDF9;
  --line:#DCD4C6;
  --text:#202724;
  --muted:#5A6560;
  --faint:#8A938E;
  --ok:#3F7D5A;
  --err:#B4453A;
  --r-s:4px;
  --r-m:6px;
  --r-l:12px;
  --sh-s:0 1px 2px rgba(16,42,38,.05);
  --sh-h:0 10px 28px -12px rgba(16,42,38,.18);
  --container:1180px;
  --serif:"Noto Serif SC","Songti SC",Georgia,serif;
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --num:"Inter","Noto Sans SC",system-ui,sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block}
a{color:var(--ink);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--coral)}
button{font-family:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{
  font-family:var(--serif);
  font-weight:600;
  color:var(--ink);
  margin:0;
  letter-spacing:.01em;
}
p{margin:0}
:focus-visible{outline:2px solid var(--bamboo);outline-offset:3px;border-radius:2px}

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

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(250,247,241,.94);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:76px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  line-height:1;
}
.brand__mark{
  font-family:var(--serif);
  font-size:22px;
  font-weight:700;
  color:var(--ink);
  letter-spacing:.06em;
}
.brand__divider{
  width:1px;
  height:18px;
  background:var(--line);
  display:inline-block;
}
.brand__sub{
  font-size:14px;
  letter-spacing:.08em;
  color:var(--muted);
  font-weight:500;
}
.brand:hover .brand__mark{color:var(--coral)}
.nav-desktop{
  display:flex;
  align-items:center;
  gap:36px;
}
.nav-link{
  position:relative;
  font-size:15px;
  font-weight:500;
  color:var(--text);
  padding:6px 0;
  display:inline-block;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  height:2px;
  background:var(--coral);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .2s ease;
}
.nav-link:hover{color:var(--ink)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--ink)}
.nav-link.is-active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:12px}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:48px;
  padding:0 26px;
  border-radius:var(--r-s);
  border:1px solid transparent;
  font-size:15px;
  font-weight:500;
  letter-spacing:.02em;
  cursor:pointer;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
  text-align:center;
}
.btn--primary{
  background:var(--coral);
  color:var(--paper);
  border-color:var(--coral);
}
.btn--primary:hover{
  background:var(--coral-dark);
  border-color:var(--coral-dark);
  color:var(--paper);
  transform:translateY(-1px);
}
.btn--primary:active{transform:translateY(0)}
.btn--ghost{
  background:transparent;
  color:var(--ink);
  border-color:var(--ink);
}
.btn--ghost:hover{
  background:var(--ink);
  color:var(--paper);
}
.btn--sm{min-height:40px;padding:0 18px;font-size:14px}
.btn--block{width:100%}

.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  align-items:center;
  justify-content:center;
  background:transparent;
  border:1px solid var(--line);
  border-radius:var(--r-s);
  cursor:pointer;
  padding:0;
}
.nav-toggle span{
  display:block;
  width:18px;
  height:1.5px;
  background:var(--ink);
  position:relative;
}
.nav-toggle span::after{
  content:"";
  position:absolute;
  left:0;
  top:6px;
  width:18px;
  height:1.5px;
  background:var(--ink);
}

/* 移动端菜单 */
.mobile-nav{
  display:none;
  position:fixed;
  inset:0;
  z-index:95;
  background:var(--bg);
  padding:20px 24px 40px;
  flex-direction:column;
  overflow-y:auto;
}
.mobile-nav.is-open{display:flex}
.mobile-nav__head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  font-size:13px;
  letter-spacing:.1em;
  color:var(--faint);
  border-bottom:1px solid var(--line);
  padding-bottom:14px;
  margin-bottom:8px;
}
.mobile-nav__close{
  width:44px;
  height:44px;
  border:1px solid var(--line);
  background:transparent;
  border-radius:var(--r-s);
  font-size:20px;
  line-height:1;
  color:var(--ink);
  cursor:pointer;
}
.mobile-link{
  display:flex;
  align-items:center;
  min-height:56px;
  font-size:17px;
  color:var(--text);
  border-bottom:1px solid var(--line);
  font-weight:500;
}
.mobile-link.is-active{color:var(--coral)}
.mobile-cta{margin-top:26px}

/* ---------- 页头 ---------- */
.page-hero{
  position:relative;
  overflow:hidden;
  padding:64px 0 76px;
  text-align:center;
  border-bottom:1px solid var(--line);
  background:
    radial-gradient(circle at 50% -10%, rgba(15,58,52,.06), transparent 62%),
    repeating-linear-gradient(0deg, rgba(15,58,52,.03) 0 1px, transparent 1px 34px),
    repeating-linear-gradient(90deg, rgba(15,58,52,.03) 0 1px, transparent 1px 34px),
    var(--bg);
}
.hero-inner{
  max-width:760px;
  margin:0 auto;
}
.breadcrumb{
  display:flex;
  justify-content:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:13px;
  color:var(--faint);
  margin-bottom:26px;
}
.breadcrumb li{display:inline-flex;align-items:center;gap:8px}
.breadcrumb li+li::before{
  content:"›";
  color:var(--faint);
}
.breadcrumb a{color:var(--faint)}
.breadcrumb a:hover{color:var(--coral)}
.breadcrumb .current{color:var(--muted)}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:26px;
  padding:0 14px;
  border:1px solid var(--bamboo);
  border-radius:999px;
  font-size:12px;
  letter-spacing:.08em;
  color:var(--bamboo);
  background:transparent;
  margin-bottom:22px;
}
.page-hero h1{
  font-size:clamp(30px,4.2vw,44px);
  line-height:1.35;
  margin-bottom:20px;
}
.hero-lead{
  font-size:17px;
  line-height:1.9;
  color:var(--muted);
  max-width:640px;
  margin:0 auto;
}
.hero-btns{
  display:flex;
  justify-content:center;
  flex-wrap:wrap;
  gap:14px;
  margin-top:34px;
}
.hero-note{
  margin-top:22px;
  font-size:13px;
  color:var(--faint);
}

/* ---------- 数据条 ---------- */
.trust-strip{
  border-bottom:1px solid var(--line);
  background:var(--paper);
}
.trust-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
}
.trust-item{
  padding:30px 24px;
  border-left:1px solid var(--line);
  text-align:center;
}
.trust-item:first-child{border-left:none}
.trust-num{
  font-family:var(--num);
  font-variant-numeric:tabular-nums;
  font-size:26px;
  font-weight:600;
  color:var(--ink);
  line-height:1.2;
  display:block;
}
.trust-label{
  display:block;
  margin-top:8px;
  font-size:13px;
  color:var(--muted);
  letter-spacing:.02em;
}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0}
.section--tight{padding:72px 0}
.section-head{
  max-width:680px;
  margin:0 auto 54px;
  text-align:center;
}
.section-head h2{
  font-size:clamp(24px,3vw,32px);
  line-height:1.45;
  margin-bottom:14px;
}
.section-head p{
  font-size:16px;
  color:var(--muted);
}
.section-kicker{
  display:block;
  font-size:12px;
  letter-spacing:.14em;
  color:var(--coral);
  margin-bottom:12px;
}

/* ---------- 时间线 ---------- */
.timeline-wrap{max-width:900px;margin:0 auto}
.timeline{position:relative}
.timeline::before{
  content:"";
  position:absolute;
  left:99px;
  top:14px;
  bottom:14px;
  width:2px;
  background:var(--line);
}
.timeline-item{
  position:relative;
  display:grid;
  grid-template-columns:100px 1fr;
  gap:34px;
  padding-bottom:46px;
}
.timeline-item:last-child{padding-bottom:0}
.timeline-item::after{
  content:"";
  position:absolute;
  left:94px;
  top:9px;
  width:12px;
  height:12px;
  border-radius:50%;
  background:var(--ink);
  box-shadow:0 0 0 3px var(--bg),0 0 0 4px var(--line);
}
.timeline-item.is-current::after{
  background:var(--coral);
  box-shadow:0 0 0 3px var(--bg),0 0 0 4px var(--coral);
}
.timeline-meta{
  text-align:right;
  padding-top:2px;
}
.timeline-num{
  display:block;
  font-family:var(--serif);
  font-size:30px;
  line-height:1;
  color:var(--coral);
  opacity:.85;
  font-weight:700;
}
.timeline-tag{
  display:block;
  margin-top:8px;
  font-size:12px;
  letter-spacing:.06em;
  color:var(--faint);
}
.timeline-body h3{
  font-size:21px;
  line-height:1.5;
  margin-bottom:10px;
}
.timeline-body p{
  font-size:16px;
  line-height:1.9;
  color:var(--muted);
  max-width:600px;
}
.timeline-figure{
  margin-top:18px;
  padding:6px;
  border:1px solid var(--line);
  border-radius:var(--r-m);
  background:var(--paper);
  max-width:420px;
}
.timeline-figure img{
  width:100%;
  border-radius:var(--r-s);
  aspect-ratio:16/9;
  object-fit:cover;
}
.timeline-figure figcaption{
  font-size:13px;
  color:var(--faint);
  padding:8px 4px 2px;
  text-align:center;
}

/* ---------- 对照表 ---------- */
.compare{
  background:var(--panel);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.table-scroll{
  overflow-x:auto;
  border:1px solid var(--line);
  border-radius:var(--r-m);
  background:var(--paper);
}
.compare-table{
  width:100%;
  min-width:620px;
  border-collapse:collapse;
  font-size:15.5px;
}
.compare-table caption{
  text-align:left;
  padding:16px 20px;
  font-size:13px;
  color:var(--muted);
  border-bottom:1px solid var(--line);
}
.compare-table th,
.compare-table td{
  padding:16px 20px;
  text-align:left;
  border-bottom:1px solid var(--line);
  vertical-align:top;
}
.compare-table thead th{
  background:var(--panel);
  font-size:14px;
  font-weight:500;
  color:var(--ink);
  letter-spacing:.02em;
  white-space:nowrap;
}
.compare-table tbody tr{transition:background .18s ease}
.compare-table tbody tr:hover{background:#FAF7F1}
.compare-table tbody tr:last-child td{border-bottom:none}
.compare-table td:first-child{
  font-weight:500;
  color:var(--ink);
  width:38%;
}

/* ---------- 自查清单 ---------- */
.checklist-grid{
  display:grid;
  grid-template-columns:5fr 6fr;
  gap:56px;
  align-items:center;
}
.frame{
  padding:8px;
  border:1px solid var(--line);
  border-radius:var(--r-l);
  background:var(--paper);
  box-shadow:var(--sh-s);
}
.frame img{
  width:100%;
  border-radius:var(--r-m);
  aspect-ratio:4/3;
  object-fit:cover;
}
.frame figcaption{
  font-size:13px;
  color:var(--faint);
  text-align:center;
  padding:10px 4px 4px;
}
.checklist-body h2{
  font-size:clamp(24px,3vw,32px);
  line-height:1.45;
  margin-bottom:16px;
}
.checklist-body > p{
  color:var(--muted);
  margin-bottom:28px;
  max-width:520px;
}
.check-list li{
  display:flex;
  gap:14px;
  align-items:flex-start;
  padding:14px 0;
  border-top:1px solid var(--line);
  font-size:15.5px;
  color:var(--text);
}
.check-list li:last-child{border-bottom:1px solid var(--line)}
.check-list .dot{
  flex:0 0 auto;
  width:8px;
  height:8px;
  margin-top:9px;
  background:var(--coral);
  border-radius:1px;
}
.check-list small{
  display:block;
  color:var(--faint);
  font-size:13px;
  margin-top:2px;
}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:820px;margin:0 auto}
.faq-item{border-top:1px solid var(--line)}
.faq-item:last-child{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:20px 4px;
  background:transparent;
  border:none;
  text-align:left;
  cursor:pointer;
  font-size:17px;
  font-weight:500;
  color:var(--ink);
  line-height:1.7;
  transition:color .2s ease;
}
.faq-q:hover{color:var(--coral)}
.faq-icon{
  flex:0 0 auto;
  width:20px;
  height:20px;
  position:relative;
  color:var(--muted);
}
.faq-icon::before,
.faq-icon::after{
  content:"";
  position:absolute;
  background:currentColor;
  transition:transform .2s ease;
}
.faq-icon::before{left:0;top:9.5px;width:20px;height:1px}
.faq-icon::after{left:9.5px;top:0;width:1px;height:20px}
.faq-item.is-open .faq-icon::after{transform:scaleY(0)}
.faq-item.is-open .faq-icon{color:var(--coral)}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .2s ease;
}
.faq-a p{
  padding:0 4px 24px;
  font-size:15.5px;
  line-height:1.85;
  color:var(--muted);
  max-width:660px;
}

/* ---------- CTA ---------- */
.cta-section{padding:0 0 96px}
.cta-box{
  background:var(--ink-deep);
  border-radius:var(--r-l);
  padding:56px 64px;
  color:rgba(250,247,241,.88);
  display:grid;
  grid-template-columns:1fr 380px;
  gap:56px;
  align-items:start;
}
.cta-copy h2{
  color:var(--paper);
  font-size:clamp(24px,3vw,30px);
  line-height:1.45;
  margin-bottom:16px;
}
.cta-copy p{
  font-size:15.5px;
  line-height:1.85;
  color:rgba(250,247,241,.7);
  max-width:440px;
}
.cta-fine{
  margin-top:26px;
  font-size:12.5px;
  color:rgba(250,247,241,.55);
  line-height:1.8;
  max-width:440px;
}
.form-field{margin-bottom:16px}
.form-field label{
  display:block;
  font-size:13px;
  color:rgba(250,247,241,.75);
  margin-bottom:8px;
  letter-spacing:.02em;
}
.form-field input,
.form-field select{
  width:100%;
  height:46px;
  padding:0 14px;
  font-size:15px;
  font-family:inherit;
  color:var(--text);
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--r-s);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.form-field input::placeholder{color:var(--faint)}
.form-field input:focus,
.form-field select:focus{
  outline:none;
  border-color:var(--bamboo);
  box-shadow:0 0 0 2px rgba(76,140,125,.18);
}
.form-note{
  margin-top:12px;
  font-size:13px;
  color:rgba(250,247,241,.6);
  min-height:20px;
}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--ink);
  color:rgba(250,247,241,.88);
  padding:64px 0 0;
}
.footer-top{border-bottom:1px solid rgba(255,255,255,.12);padding-bottom:48px}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:40px;
}
.footer-brand__logo{
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:18px;
}
.footer-brand__mark{
  font-family:var(--serif);
  font-size:20px;
  font-weight:700;
  color:var(--paper);
  letter-spacing:.06em;
}
.footer-brand__divider{
  width:1px;
  height:16px;
  background:rgba(255,255,255,.24);
}
.footer-brand__sub{
  font-size:13px;
  letter-spacing:.08em;
  color:rgba(250,247,241,.7);
}
.footer-brand p{
  font-size:14px;
  line-height:1.85;
  color:rgba(250,247,241,.6);
  max-width:320px;
}
.footer-col h4{
  font-family:var(--sans);
  font-size:13px;
  font-weight:500;
  color:rgba(250,247,241,.6);
  letter-spacing:.06em;
  margin-bottom:16px;
}
.footer-col li{margin-bottom:12px}
.footer-col a,
.footer-col span{
  font-size:14px;
  color:rgba(250,247,241,.85);
  line-height:1.7;
}
.footer-col a:hover{
  color:var(--coral);
  text-decoration:underline;
  text-underline-offset:4px;
}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:24px;
  padding:22px 24px 26px;
  font-size:13px;
  color:rgba(250,247,241,.55);
}
.footer-bottom .to-top{
  margin-left:auto;
  color:rgba(250,247,241,.75);
  font-size:13px;
}
.footer-bottom .to-top:hover{color:var(--coral);text-decoration:underline;text-underline-offset:4px}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{max-width:100%;padding:0 22px}
  .section{padding:76px 0}
  .cta-box{padding:48px 40px;gap:40px}
}
@media (max-width:1023px){
  .nav-desktop{gap:22px}
  .nav-link{font-size:14px}
  .trust-grid{grid-template-columns:repeat(2,1fr)}
  .trust-item:nth-child(3){border-left:none}
  .trust-item:nth-child(odd){border-left:none}
  .trust-item{border-top:1px solid var(--line);padding:24px 18px}
  .trust-item:nth-child(-n+2){border-top:none}
  .checklist-grid{grid-template-columns:1fr;gap:36px}
  .cta-box{grid-template-columns:1fr;gap:34px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
}
@media (max-width:767px){
  body{font-size:16px}
  .container{padding:0 18px}
  .header-inner{height:64px}
  .nav-desktop{display:none}
  .nav-toggle{display:flex}
  .brand__mark{font-size:20px}
  .brand__sub{font-size:13px}
  .page-hero{padding:44px 0 56px}
  .hero-btns .btn{width:100%}
  .hero-lead{font-size:16px}
  .section,.section--tight{padding:48px 0}
  .section-head{margin-bottom:36px}
  .timeline::before{left:7px}
  .timeline-item{
    grid-template-columns:1fr;
    gap:10px;
    padding-left:30px;
    padding-bottom:38px;
  }
  .timeline-item::after{left:2px;top:8px}
  .timeline-meta{text-align:left;display:flex;align-items:baseline;gap:10px}
  .timeline-num{font-size:22px}
  .timeline-tag{margin-top:0}
  .timeline-body h3{font-size:19px}
  .timeline-figure{max-width:100%}
  .compare-table{min-width:560px;font-size:15px}
  .compare-table th,.compare-table td{padding:14px 16px}
  .compare-table td:first-child{width:44%}
  .cta-box{padding:34px 24px;border-radius:var(--r-m)}
  .cta-section{padding:0 0 56px}
  .site-footer{padding-top:48px}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px;padding:20px 18px 26px}
  .footer-bottom .to-top{margin-left:0}
  .faq-q{font-size:16px;padding:18px 2px}
}
@media (max-width:480px){
  .brand__sub{display:none}
  .brand__divider{display:none}
  .trust-num{font-size:22px}
  .eyebrow{font-size:11px}
  .check-list li{font-size:15px}
}