/* roulang page: index */
:root{
  --ink-900:#0B1F1E;
  --ink-800:#12302E;
  --brick-600:#C75B39;
  --brick-soft:rgba(199,91,57,.10);
  --sand-500:#B4915C;
  --paper-50:#F7F4EE;
  --panel:#FFFFFF;
  --panel-alt:#EFEAE1;
  --text-900:#16211F;
  --text-600:#586661;
  --text-400:#8A9691;
  --line:#E3DDD1;
  --line-dark:rgba(255,255,255,.14);
  --r-card:10px;
  --r-img:8px;
  --r-btn:8px;
  --shadow-1:0 1px 2px rgba(11,31,30,.06);
  --shadow-2:0 10px 28px -12px rgba(11,31,30,.18);
  --t:220ms cubic-bezier(.22,.61,.36,1);
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,serif;
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --mono:"Inter","Space Grotesk",ui-sans-serif,system-ui,sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper-50);
  color:var(--text-900);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.75;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4{margin:0;font-family:var(--serif);font-weight:700;letter-spacing:-.01em;line-height:1.26;color:var(--ink-800)}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit}
input{font-family:inherit;font-size:inherit}
::selection{background:rgba(199,91,57,.18)}
:focus-visible{outline:2px solid var(--brick-600);outline-offset:2px}

.wrap{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
.section{padding:80px 0}
.section--tight{padding:64px 0}
.section + .section{border-top:1px solid var(--line)}
.section[id]{scroll-margin-top:72px}

.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap}
.section-title{font-size:32px}
.section-desc{color:var(--text-600);font-size:15px;max-width:640px;margin-top:12px}
.eyebrow{
  display:inline-block;
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--sand-500);
  font-weight:600;
  margin-bottom:16px;
}
.link-more{display:inline-flex;align-items:center;gap:8px;color:var(--ink-800);font-size:15px;font-weight:600;white-space:nowrap}
.link-more span{transition:transform var(--t)}
.link-more:hover{color:var(--brick-600)}
.link-more:hover span{transform:translateX(3px)}

/* ---------- header ---------- */
.site-header{position:relative;z-index:50;background:var(--paper-50)}
.topbar{border-bottom:1px solid var(--line)}
.topbar__inner{display:flex;align-items:center;gap:24px;height:72px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand__mark{width:30px;height:30px;flex:0 0 auto;color:var(--ink-800)}
.brand__text{font-family:var(--serif);font-size:19px;font-weight:700;letter-spacing:-.01em;color:var(--ink-800);white-space:nowrap}
.brand__text em{font-style:normal;color:var(--brick-600)}
.topbar__tools{display:flex;align-items:center;gap:14px;margin-left:auto}
.search{position:relative;flex:0 0 240px;transition:flex-basis var(--t)}
.search:focus-within{flex-basis:320px}
.search__input{
  width:100%;height:40px;border-radius:999px;border:1px solid var(--line);
  background:var(--panel);color:var(--text-900);padding:0 38px 0 38px;
  font-size:14px;transition:border-color var(--t),box-shadow var(--t);
}
.search__input::placeholder{color:var(--text-400)}
.search__input:focus{outline:none;border-color:var(--ink-800);box-shadow:0 0 0 3px rgba(199,91,57,.16)}
.search__icon{position:absolute;left:13px;top:50%;transform:translateY(-50%);width:16px;height:16px;color:var(--text-400);pointer-events:none}
.search__clear{
  position:absolute;right:8px;top:50%;transform:translateY(-50%);
  width:24px;height:24px;border-radius:50%;display:none;align-items:center;justify-content:center;
  color:var(--text-400);font-size:15px;line-height:1;
}
.search__clear:hover{background:var(--panel-alt);color:var(--ink-800)}
.search.has-value .search__clear{display:flex}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;letter-spacing:.01em;
  border:1px solid transparent;transition:background var(--t),color var(--t),border-color var(--t),transform var(--t),box-shadow var(--t);
  white-space:nowrap;
}
.btn--primary{background:var(--ink-800);color:#fff;box-shadow:var(--shadow-1)}
.btn--primary:hover{background:var(--brick-600);transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn--ghost{background:var(--panel);color:var(--ink-800);border-color:var(--ink-800)}
.btn--ghost:hover{background:rgba(18,48,46,.06)}
.btn--sm{height:38px;padding:0 16px;font-size:14px}
.btn--full{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.4;pointer-events:none}

/* ---------- channel bar ---------- */
.channelbar{
  position:sticky;top:0;z-index:60;
  background:rgba(247,244,238,.95);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.channelbar__inner{display:flex;align-items:center;height:52px;position:relative}
.tabs{display:flex;align-items:stretch;gap:28px;overflow-x:auto;scroll-snap-type:x proximity;scrollbar-width:none;height:52px}
.tabs::-webkit-scrollbar{display:none}
.tab{
  display:inline-flex;align-items:center;position:relative;white-space:nowrap;
  font-size:15px;color:var(--text-600);scroll-snap-align:start;
  transition:color var(--t);
}
.tab::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--brick-600);
  transform:scaleX(0);transform-origin:left;transition:transform var(--t);
}
.tab:hover{color:var(--ink-800)}
.tab:hover::after{transform:scaleX(1)}
.tab.is-active{color:var(--ink-800);font-weight:600}
.tab.is-active::after{transform:scaleX(1)}
.tabs-fade{
  position:absolute;right:0;top:0;bottom:0;width:56px;pointer-events:none;
  background:linear-gradient(90deg,rgba(247,244,238,0),rgba(247,244,238,.98));
}

/* ---------- hero ---------- */
.hero{
  position:relative;
  padding:64px 0 72px;
  overflow:hidden;
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(11,31,30,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(11,31,30,.045) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(circle at 70% 20%,#000,transparent 72%);
  -webkit-mask-image:radial-gradient(circle at 70% 20%,#000,transparent 72%);
}
.hero .wrap{position:relative}
.hero__grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.hero h1{font-size:48px;margin-bottom:20px}
.hero__sub{font-size:17px;color:var(--text-600);max-width:520px}
.hero__actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero__facts{display:grid;grid-template-columns:repeat(3,1fr);gap:0;margin-top:44px;border-top:1px solid var(--line);padding-top:24px}
.fact{padding-right:20px}
.fact + .fact{padding-left:24px;border-left:1px solid var(--line)}
.fact__num{font-family:var(--serif);font-size:26px;color:var(--ink-800);line-height:1.2}
.fact__label{font-size:13px;color:var(--text-400);margin-top:4px}

.hero__media{position:relative}
.hero__img{
  width:100%;aspect-ratio:5/4;object-fit:cover;border-radius:var(--r-card);
  border:1px solid var(--line);box-shadow:var(--shadow-1);
}
.hero__card{
  position:absolute;left:-28px;bottom:24px;width:min(320px,80%);
  background:var(--panel);border:1px solid var(--sand-500);border-radius:var(--r-card);
  padding:18px 20px;box-shadow:var(--shadow-2);
}
.hero__card p{font-size:14px;color:var(--text-600);line-height:1.7}
.hero__card p strong{color:var(--ink-800);font-weight:600;display:block;margin-bottom:6px;font-size:15px}
.hero__card .link-more{font-size:14px;margin-top:10px}

/* ---------- values ---------- */
.values{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border-top:1px solid var(--line)}
.value-item{padding:36px 32px 0 0}
.value-item + .value-item{border-left:1px solid var(--line);padding-left:32px}
.value-item__num{font-family:var(--serif);font-size:28px;color:var(--brick-600);letter-spacing:.02em}
.value-item h3{font-size:20px;margin:14px 0 10px}
.value-item p{font-size:15px;color:var(--text-600)}

/* ---------- feature groups ---------- */
.feature-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.feature-card{
  grid-column:span 5;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px;box-shadow:var(--shadow-1);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.feature-card--wide{grid-column:span 7}
.feature-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--sand-500)}
.feature-card__icon{width:28px;height:28px;color:var(--brick-600);margin-bottom:16px}
.feature-card h3{font-size:21px;margin-bottom:10px}
.feature-card p{font-size:15px;color:var(--text-600);margin-bottom:16px}
.feature-card__list{display:grid;gap:8px;margin-bottom:18px}
.feature-card__list li{position:relative;padding-left:16px;font-size:14px;color:var(--text-600)}
.feature-card__list li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:1px;background:var(--sand-500)}

/* ---------- scenes ---------- */
.scene{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;padding:44px 0}
.scene + .scene{border-top:1px solid var(--line)}
.scene--reverse .scene__media{order:2}
.scene__media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-img);border:1px solid var(--line)}
.scene__tag{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;border:1px solid var(--sand-500);background:var(--panel);color:var(--ink-800);font-size:13px;margin-bottom:14px}
.scene__body h3{font-size:22px;margin-bottom:12px}
.scene__points{display:grid;gap:10px;margin-top:18px}
.scene__points li{display:flex;gap:10px;font-size:15px;color:var(--text-600)}
.scene__points li span{color:var(--brick-600);font-family:var(--mono);font-size:13px;padding-top:3px}

/* ---------- cases ---------- */
.cases{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.case-card{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);box-shadow:var(--shadow-1);
}
.case-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--sand-500)}
.case-card img{width:100%;aspect-ratio:16/9;object-fit:cover}
.case-card__body{padding:22px 24px 24px}
.case-card__tag{display:inline-block;font-family:var(--mono);font-size:12px;letter-spacing:.08em;color:var(--sand-500);margin-bottom:10px}
.case-card h3{font-size:19px;margin-bottom:10px}
.case-card p{font-size:15px;color:var(--text-600)}

/* ---------- plans ---------- */
.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.plan{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px;display:flex;flex-direction:column;position:relative;
  transition:transform var(--t),box-shadow var(--t);box-shadow:var(--shadow-1);
}
.plan:hover{transform:translateY(-2px);box-shadow:var(--shadow-2)}
.plan--featured{border-color:var(--brick-600);box-shadow:0 10px 28px -14px rgba(199,91,57,.45)}
.plan__flag{
  position:absolute;top:-11px;left:26px;height:22px;padding:0 10px;border-radius:999px;
  background:var(--brick-600);color:#fff;font-size:12px;line-height:22px;letter-spacing:.04em;
}
.plan__head{display:flex;align-items:baseline;justify-content:space-between;gap:12px;border-bottom:1px solid var(--line);padding-bottom:16px;margin-bottom:18px}
.plan__head h3{font-size:19px}
.plan__price{font-family:var(--mono);font-size:22px;font-weight:600;color:var(--ink-800);font-variant-numeric:tabular-nums}
.plan__price small{font-size:12px;color:var(--text-400);font-weight:400;margin-left:4px}
.plan__list{display:grid;gap:10px;margin-bottom:24px;flex:1}
.plan__list li{display:flex;gap:10px;font-size:14px;color:var(--text-600)}
.plan__list li::before{content:"·";color:var(--brick-600);font-weight:700;line-height:1}

/* ---------- latest / cms ---------- */
.latest-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:24px}
.news-card{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);box-shadow:var(--shadow-1);
  height:100%;
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--sand-500)}
.news-card__link{display:block;height:100%}
.news-cover{display:none}
.news-card--lead .news-cover{display:block}
.news-cover img{width:100%;aspect-ratio:16/9;object-fit:cover}
.news-body{padding:20px 22px 22px}
.news-card--lead .news-body{padding:24px 26px 26px}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 11px;border-radius:999px;
  border:1px solid var(--sand-500);background:var(--paper-50);color:var(--ink-800);font-size:13px;
}
.news-title{font-size:17px;margin:12px 0 8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card--lead .news-title{font-size:22px}
.news-summary{font-size:14px;color:var(--text-600);display:none;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card--lead .news-summary{display:-webkit-box}
.news-meta{display:flex;align-items:center;justify-content:space-between;margin-top:14px;padding-top:12px;border-top:1px solid var(--line)}
.news-meta time{font-family:var(--mono);font-size:13px;color:var(--text-400);font-variant-numeric:tabular-nums}
.news-meta .arrow{color:var(--brick-600);transition:transform var(--t)}
.news-card:hover .news-meta .arrow{transform:translateX(3px)}
.news-side{display:grid;gap:16px;align-content:start}
.empty-state{
  border:1px dashed var(--line);border-radius:var(--r-card);background:var(--panel-alt);
  padding:44px 24px;text-align:center;color:var(--text-600);font-size:15px;
}
.empty-state .empty-mark{width:44px;height:44px;margin:0 auto 14px;color:var(--sand-500)}

/* ---------- faq ---------- */
.faq{display:grid;gap:0;border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{display:flex;align-items:center;gap:18px;width:100%;padding:22px 0;text-align:left;transition:color var(--t)}
.faq-q:hover .faq-title{color:var(--brick-600)}
.faq-num{font-family:var(--mono);font-size:13px;color:var(--sand-500);font-variant-numeric:tabular-nums;flex:0 0 auto}
.faq-title{font-family:var(--serif);font-size:18px;font-weight:600;color:var(--ink-800);flex:1;transition:color var(--t)}
.faq-icon{position:relative;width:16px;height:16px;flex:0 0 auto;color:var(--ink-800);transition:transform var(--t)}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:currentColor;border-radius:1px}
.faq-icon::before{left:0;right:0;top:7px;height:2px}
.faq-icon::after{top:0;bottom:0;left:7px;width:2px}
.faq-item.is-open .faq-icon{transform:rotate(45deg)}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows var(--t)}
.faq-item.is-open .faq-a{grid-template-rows:1fr}
.faq-a__inner{overflow:hidden}
.faq-a__inner p{
  border-left:3px solid var(--brick-600);
  padding:2px 0 2px 18px;margin:0 0 24px 31px;
  font-size:15px;color:var(--text-600);
}

/* ---------- cta band ---------- */
.cta-band{background:var(--ink-900);color:#fff;position:relative;overflow:hidden}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(circle at 88% 30%,rgba(255,255,255,.07),transparent 46%);
}
.cta-band .wrap{position:relative}
.cta-band__inner{display:flex;align-items:center;justify-content:space-between;gap:32px;padding:56px 0}
.cta-band h2{color:#fff;font-size:30px;max-width:620px}
.cta-band p{color:rgba(255,255,255,.72);font-size:15px;margin-top:12px;max-width:560px}
.cta-band .eyebrow{color:var(--sand-500)}
.cta-band .btn--primary{background:#fff;color:var(--ink-900)}
.cta-band .btn--primary:hover{background:var(--brick-600);color:#fff}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.72);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:44px;border-bottom:1px solid var(--line-dark)}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand__mark{color:var(--sand-500)}
.footer-brand span{font-family:var(--serif);font-size:18px;color:#fff;font-weight:700}
.footer-about{font-size:14px;line-height:1.8;max-width:320px;color:rgba(255,255,255,.62)}
.footer-col h4{font-family:var(--sans);font-size:13px;letter-spacing:.06em;color:var(--sand-500);font-weight:600;margin-bottom:16px}
.footer-col ul{display:grid;gap:10px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.72);transition:color var(--t)}
.footer-col a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px}
.footer-contact li{font-size:14px;color:rgba(255,255,255,.72);line-height:1.9}
.footer-contact strong{color:#fff;font-weight:500}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;padding:22px 0;font-size:13px;color:rgba(255,255,255,.5)}
.footer-bottom a{color:rgba(255,255,255,.6)}
.footer-bottom a:hover{color:#fff}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s cubic-bezier(.22,.61,.36,1),transform .5s cubic-bezier(.22,.61,.36,1)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .hero h1{font-size:38px}
  .hero__grid{grid-template-columns:1fr;gap:40px}
  .hero__card{left:0;bottom:16px}
  .section{padding:64px 0}
  .section-title{font-size:27px}
  .value-item{padding:28px 20px 0 0}
  .value-item + .value-item{padding-left:20px}
  .scene{grid-template-columns:1fr;gap:28px}
  .scene--reverse .scene__media{order:0}
  .plans{grid-template-columns:1fr}
  .latest-grid{grid-template-columns:1fr}
  .feature-card,.feature-card--wide{grid-column:span 6}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-band__inner{flex-direction:column;align-items:flex-start;padding:48px 0}
}
@media (max-width:768px){
  .wrap{padding:0 20px}
  .topbar__inner{height:60px;gap:12px}
  .search{flex:1 1 auto;min-width:0}
  .search:focus-within{flex-basis:auto}
  .topbar__tools .btn--primary{display:none}
  .brand__text{font-size:16px}
  .hero{padding:44px 0 56px}
  .hero h1{font-size:31px}
  .hero__sub{font-size:16px}
  .hero__facts{grid-template-columns:1fr;gap:0;padding-top:18px}
  .fact{padding:12px 0;border-left:0!important}
  .fact + .fact{border-top:1px solid var(--line);padding-left:0}
  .section{padding:56px 0}
  .section-title{font-size:24px}
  .values{grid-template-columns:1fr}
  .value-item{padding:24px 0 0}
  .value-item + .value-item{border-left:0;border-top:1px solid var(--line);padding-left:0;margin-top:8px}
  .feature-card,.feature-card--wide{grid-column:span 12}
  .cases{grid-template-columns:1fr}
  .faq-title{font-size:16px}
  .faq-a__inner p{margin-left:0;padding-left:14px}
  .cta-band h2{font-size:24px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .hero__actions .btn{width:100%}
}
@media (max-width:520px){
  .hero h1{font-size:28px}
  .hero__card{position:static;width:100%;margin-top:16px;left:auto;bottom:auto}
  .search__input{height:38px}
  .plans{gap:18px}
  .plan{padding:22px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}

/* roulang page: article */
:root{
  --ink-900:#0B1F1E;
  --ink-800:#12302E;
  --brick-600:#C75B39;
  --sand-500:#B4915C;
  --paper-50:#F7F4EE;
  --panel:#FFFFFF;
  --panel-alt:#EFEAE1;
  --text-900:#16211F;
  --text-600:#586661;
  --text-400:#8A9691;
  --line:#E3DDD1;
  --line-dark:rgba(255,255,255,.14);
  --r-card:6px;
  --r-img:4px;
  --r-btn:4px;
  --shadow-1:0 1px 2px rgba(11,31,30,.06);
  --shadow-2:0 10px 28px -12px rgba(11,31,30,.18);
  --ease:cubic-bezier(.22,.61,.36,1);
  --wrap:1240px;
  --serif:"Noto Serif SC","Songti SC","Source Han Serif SC",Georgia,serif;
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  --num:"Inter","Space Grotesk","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper-50);
  color:var(--text-900);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding-left:0}
::selection{background:rgba(199,91,57,.16)}
:focus-visible{outline:2px solid var(--brick-600);outline-offset:2px;border-radius:2px}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 24px}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--ink-800);color:#fff;padding:10px 16px;border-radius:0 0 4px 0;z-index:99}
.skip-link:focus{left:0}

/* ---------- 顶部栏 ---------- */
.site-header{background:var(--panel);border-bottom:1px solid var(--line);position:relative;z-index:40}
.topbar__inner{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:72px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink-800);flex:none}
.brand__mark{width:30px;height:30px;flex:none;color:var(--brick-600)}
.brand__text{font-family:var(--serif);font-size:19px;font-weight:700;letter-spacing:-.01em;white-space:nowrap}
.brand__text em{font-style:normal;color:var(--brick-600)}
.topbar__tools{display:flex;align-items:center;gap:12px}
.search{position:relative;display:flex;align-items:center;width:240px;transition:width .24s var(--ease)}
.search:focus-within{width:320px}
.search__icon{position:absolute;left:12px;width:17px;height:17px;color:var(--text-400);pointer-events:none}
.search__input{
  width:100%;height:40px;padding:0 34px 0 36px;
  border:1px solid var(--line);border-radius:var(--r-btn);
  background:var(--paper-50);color:var(--text-900);font-size:14px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background-color .2s var(--ease);
}
.search__input::placeholder{color:var(--text-400)}
.search__input:focus{outline:none;border-color:var(--ink-800);background:var(--panel);box-shadow:0 0 0 2px rgba(199,91,57,.25)}
.search__clear{
  position:absolute;right:6px;width:24px;height:24px;display:none;
  align-items:center;justify-content:center;border:none;border-radius:999px;
  background:var(--panel-alt);color:var(--text-600);font-size:15px;line-height:1;cursor:pointer;
  transition:background-color .2s var(--ease),color .2s var(--ease);
}
.search__clear:hover{background:var(--brick-600);color:#fff}
.search.has-value .search__clear{display:inline-flex}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--r-btn);
  border:1px solid transparent;font-size:15px;font-weight:500;line-height:1;
  cursor:pointer;white-space:nowrap;
  transition:background-color .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
}
.btn--primary{background:var(--ink-800);color:#fff;box-shadow:var(--shadow-1)}
.btn--primary:hover{background:var(--brick-600);transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn--primary:active{transform:translateY(0)}
.btn--ghost{background:transparent;color:var(--ink-800);border-color:var(--ink-800)}
.btn--ghost:hover{background:rgba(18,48,46,.06);transform:translateY(-1px)}
.btn--light{background:var(--paper-50);color:var(--ink-900)}
.btn--light:hover{background:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn--outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.5)}
.btn--outline-light:hover{background:rgba(255,255,255,.1);border-color:#fff}
.btn--sm{height:40px;padding:0 16px;font-size:14px}
.btn--block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.4;pointer-events:none}

/* ---------- 频道条 ---------- */
.channelbar{background:var(--panel);border-top:1px solid var(--line);position:sticky;top:0;z-index:35}
.channelbar .wrap{position:relative}
.channelbar__inner{display:flex;align-items:center;height:52px}
.tabs{
  display:flex;gap:28px;width:100%;
  overflow-x:auto;scroll-snap-type:x proximity;
  scrollbar-width:none;-ms-overflow-style:none;
}
.tabs::-webkit-scrollbar{display:none}
.tab{
  position:relative;flex:none;scroll-snap-align:start;
  display:inline-flex;align-items:center;height:52px;
  font-size:15px;color:var(--text-600);white-space:nowrap;
  transition:color .2s var(--ease);
}
.tab::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--brick-600);transform:scaleX(0);transform-origin:left;
  transition:transform .24s var(--ease);
}
.tab:hover{color:var(--ink-800)}
.tab:hover::after{transform:scaleX(1)}
.tab.is-active{color:var(--ink-800);font-weight:600}
.tab.is-active::after{transform:scaleX(1)}
.tabs-fade{
  position:absolute;right:24px;top:0;bottom:0;width:52px;pointer-events:none;
  background:linear-gradient(90deg,rgba(255,255,255,0),var(--panel));
}

/* ---------- 面包屑 ---------- */
.breadcrumb{padding-top:26px}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;list-style:none;font-size:13px;color:var(--text-400)}
.breadcrumb li{display:inline-flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"/";color:var(--line);font-family:var(--num)}
.breadcrumb a{color:var(--text-600);transition:color .2s var(--ease)}
.breadcrumb a:hover{color:var(--brick-600)}
.breadcrumb .is-current{color:var(--text-400);max-width:52ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;display:inline-block;vertical-align:bottom}

/* ---------- 文章头 ---------- */
.article-shell{padding-bottom:64px}
.article-head{max-width:920px;padding:22px 0 30px;border-bottom:1px solid var(--line)}
.badge{
  display:inline-flex;align-items:center;height:28px;padding:0 13px;
  border-radius:999px;border:1px solid var(--sand-500);
  background:var(--paper-50);color:var(--ink-800);
  font-size:13px;letter-spacing:.02em;white-space:nowrap;
}
.article-title{
  font-family:var(--serif);font-weight:700;
  font-size:44px;line-height:1.22;letter-spacing:-.01em;
  color:var(--ink-900);margin-top:16px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 12px;
  margin-top:20px;font-size:13px;color:var(--text-400);
}
.article-meta time{font-family:var(--num);font-variant-numeric:tabular-nums}
.article-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--sand-500);display:inline-block}

/* ---------- 布局 ---------- */
.article-grid{display:grid;grid-template-columns:minmax(0,1fr);gap:44px;margin-top:38px}
.article-main{min-width:0}

/* ---------- 正文 ---------- */
.article-body{font-size:17px;line-height:1.85;color:var(--text-900)}
.article-body > * + *{margin-top:20px}
.article-body p{margin:0}
.article-body h2{
  font-family:var(--serif);font-weight:700;
  font-size:30px;line-height:1.3;letter-spacing:-.01em;
  color:var(--ink-900);margin:44px 0 0;padding-top:6px;
}
.article-body h2 + p{margin-top:14px}
.article-body h3{
  font-family:var(--serif);font-weight:600;
  font-size:21px;line-height:1.4;color:var(--ink-800);
  margin:32px 0 0;
}
.article-body h3 + p{margin-top:12px}
.article-body h4{font-size:17px;font-weight:600;color:var(--ink-800);margin:24px 0 0}
.article-body ul,.article-body ol{margin:0;padding-left:22px}
.article-body li{margin-bottom:10px}
.article-body li::marker{color:var(--sand-500)}
.article-body strong{color:var(--ink-900);font-weight:600}
.article-body a{color:var(--brick-600);border-bottom:1px solid rgba(199,91,57,.35);transition:border-color .2s var(--ease),color .2s var(--ease)}
.article-body a:hover{color:var(--ink-800);border-bottom-color:var(--ink-800)}
.article-body blockquote{
  margin:28px 0;padding:18px 24px;
  border-left:3px solid var(--brick-600);background:var(--panel-alt);
  border-radius:0 var(--r-card) var(--r-card) 0;
  color:var(--text-600);font-size:16px;
}
.article-body blockquote p{margin: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(--text-400);text-align:center;margin-top:10px;
}
.article-body hr{border:none;border-top:1px solid var(--line);margin:36px 0}
.article-body table{
  width:100%;border-collapse:collapse;font-size:15px;
  border:1px solid var(--line);background:var(--panel);
}
.article-body thead th{
  background:var(--panel-alt);color:var(--ink-800);
  font-weight:600;text-align:left;
}
.article-body th,.article-body td{
  padding:12px 14px;border-bottom:1px solid var(--line);vertical-align:top;
}
.article-body tbody tr:nth-child(even){background:#FBF9F5}

/* ---------- 空态 ---------- */
.empty-state{
  text-align:center;padding:60px 28px;
  background:var(--panel-alt);border:1px solid var(--line);border-radius:var(--r-card);
}
.empty-state__icon{
  width:56px;height:56px;margin:0 auto 18px;border-radius:50%;
  border:1px solid var(--sand-500);display:flex;align-items:center;justify-content:center;
  color:var(--sand-500);font-family:var(--num);font-size:20px;
}
.empty-state__title{font-family:var(--serif);font-size:22px;color:var(--ink-800);margin-bottom:8px}
.empty-state__desc{font-size:15px;color:var(--text-600);max-width:44ch;margin:0 auto 22px}

/* ---------- 上下篇 ---------- */
.postnav{display:grid;grid-template-columns:1fr;gap:0;margin-top:48px;border-top:1px solid var(--line)}
.postnav__item{padding:20px 0;border-bottom:1px solid var(--line);display:block;transition:color .2s var(--ease)}
.postnav__label{display:block;font-size:12px;letter-spacing:.12em;color:var(--sand-500);margin-bottom:6px;font-family:var(--num);text-transform:uppercase}
.postnav__title{font-family:var(--serif);font-size:17px;color:var(--ink-800);line-height:1.5;transition:color .2s var(--ease)}
.postnav__item:hover .postnav__title{color:var(--brick-600)}

/* ---------- 侧栏 ---------- */
.article-aside{min-width:0}
.aside-card{
  background:var(--panel);border:1px solid var(--line);
  border-radius:var(--r-card);padding:22px;margin-bottom:20px;
  box-shadow:var(--shadow-1);
}
.aside-card__title{
  font-family:var(--serif);font-size:17px;font-weight:600;color:var(--ink-900);
  margin-bottom:14px;padding-bottom:12px;border-bottom:1px solid var(--line);
}
.quick-list{list-style:none;margin:0}
.quick-list li + li{border-top:1px solid var(--line)}
.quick-list a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:11px 0;font-size:14.5px;color:var(--text-600);
  transition:color .2s var(--ease);
}
.quick-list a::after{content:"→";color:var(--sand-500);transition:transform .22s var(--ease)}
.quick-list a:hover{color:var(--brick-600)}
.quick-list a:hover::after{transform:translateX(3px)}
.mini-card{display:flex;gap:12px;padding:13px 0;align-items:flex-start}
.mini-card + .mini-card{border-top:1px solid var(--line)}
.mini-card__thumb{
  width:76px;height:58px;flex:none;border-radius:var(--r-img);
  overflow:hidden;background:var(--panel-alt);border:1px solid var(--line);
}
.mini-card__thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease)}
.mini-card:hover .mini-card__thumb img{transform:scale(1.05)}
.mini-card__title{
  font-size:14px;line-height:1.55;color:var(--ink-800);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .2s var(--ease);
}
.mini-card:hover .mini-card__title{color:var(--brick-600)}
.mini-card__date{font-size:12px;color:var(--text-400);margin-top:5px;font-family:var(--num)}
.aside-cta{background:var(--ink-900);border:none;color:#fff}
.aside-cta .aside-card__title{color:#fff;border-bottom-color:var(--line-dark)}
.aside-cta p{font-size:13.5px;line-height:1.7;color:rgba(255,255,255,.68);margin-bottom:16px}

/* ---------- 相关推荐 ---------- */
.related-section{padding:0 0 80px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:26px}
.section-head__title{font-family:var(--serif);font-size:30px;line-height:1.3;letter-spacing:-.01em;color:var(--ink-900)}
.section-head__sub{font-size:14px;color:var(--text-600);margin-top:8px}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.related-card{
  display:flex;flex-direction:column;background:var(--panel);
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.related-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--sand-500)}
.related-card__media{aspect-ratio:4/3;overflow:hidden;background:var(--panel-alt);border-bottom:1px solid var(--line)}
.related-card__media img{width:100%;height:100%;object-fit:cover;transition:transform .35s var(--ease)}
.related-card:hover .related-card__media img{transform:scale(1.04)}
.related-card__body{padding:20px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.related-card__badge{align-self:flex-start;font-size:12px;color:var(--ink-800);border:1px solid var(--sand-500);border-radius:999px;padding:3px 10px}
.related-card__title{
  font-family:var(--serif);font-size:18px;line-height:1.45;color:var(--ink-900);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.related-card__desc{
  font-size:14px;line-height:1.7;color:var(--text-600);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.related-card__foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--text-400)}
.related-card__arrow{color:var(--brick-600);transition:transform .22s var(--ease)}
.related-card:hover .related-card__arrow{transform:translateX(3px)}

/* ---------- 结尾 CTA ---------- */
.cta-strip{position:relative;background:var(--ink-900);color:#fff;overflow:hidden}
.cta-strip::before{
  content:"";position:absolute;inset:0;opacity:.06;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.9) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.9) 1px,transparent 1px);
  background-size:56px 56px;
}
.cta-strip__inner{
  position:relative;display:flex;align-items:center;justify-content:space-between;
  gap:32px;padding:56px 0;
}
.cta-strip__title{font-family:var(--serif);font-size:32px;line-height:1.3;letter-spacing:-.01em}
.cta-strip__desc{font-size:15px;color:rgba(255,255,255,.7);margin-top:12px;max-width:56ch}
.cta-strip__actions{display:flex;gap:12px;flex:none}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.72);padding:64px 0 28px;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.15fr;gap:44px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-family:var(--serif);font-size:18px;font-weight:700;margin-bottom:14px}
.footer-brand .brand__mark{color:var(--sand-500)}
.footer-about{font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);max-width:34ch}
.footer-col h4{font-size:13px;letter-spacing:.12em;color:var(--sand-500);font-weight:600;margin-bottom:16px}
.footer-col ul{list-style:none;margin:0}
.footer-col li{margin-bottom:10px}
.footer-col a{color:rgba(255,255,255,.72);transition:color .2s var(--ease)}
.footer-col a:hover{color:var(--paper-50);text-decoration:underline;text-underline-offset:3px}
.footer-contact{list-style:none;margin:0}
.footer-contact li{margin-bottom:10px;font-size:13.5px;color:rgba(255,255,255,.62)}
.footer-contact strong{color:rgba(255,255,255,.86);font-weight:500;margin-right:4px}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid var(--line-dark);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.48);
}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(12px)}
.reveal.is-in{opacity:1;transform:none;transition:opacity .5s var(--ease),transform .5s var(--ease)}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* ---------- 响应式 ---------- */
@media (min-width:1024px){
  .article-grid{grid-template-columns:minmax(0,1fr) 320px;gap:56px}
  .article-aside{position:sticky;top:76px;align-self:flex-start}
  .postnav{grid-template-columns:1fr 1fr;gap:0 40px}
  .postnav__item{border-bottom:1px solid var(--line)}
}
@media (max-width:1023px){
  .article-title{font-size:36px}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .cta-strip__inner{flex-direction:column;align-items:flex-start;padding:48px 0}
}
@media (max-width:900px){
  .search{width:180px}
  .search:focus-within{width:230px}
  .topbar__tools .btn--ghost{display:none}
}
@media (max-width:768px){
  .wrap{padding:0 20px}
  .topbar__inner{flex-wrap:wrap;min-height:auto;padding:14px 0 10px;gap:12px}
  .brand__text{font-size:17px}
  .topbar__tools{width:100%;gap:10px}
  .search{flex:1 1 auto;width:auto}
  .search:focus-within{width:auto}
  .tabs{gap:22px}
  .tabs-fade{right:20px;width:40px}
  .article-title{font-size:31px}
  .article-body{font-size:16.5px;line-height:1.8}
  .article-body h2{font-size:24px;margin-top:36px}
  .article-body h3{font-size:19px;margin-top:28px}
  .related-grid{grid-template-columns:minmax(0,1fr)}
  .section-head__title{font-size:24px}
  .cta-strip__title{font-size:24px}
  .cta-strip__actions{flex-direction:column;width:100%}
  .cta-strip__actions .btn{width:100%}
  .breadcrumb .is-current{max-width:34ch}
}
@media (max-width:640px){
  .topbar__tools{flex-wrap:wrap}
  .search{order:1;flex:1 1 100%}
  .topbar__tools .btn{order:2;flex:1 1 0;padding:0 12px}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer-bottom{flex-direction:column;gap:8px}
  .aside-card{padding:18px}
}
@media (max-width:520px){
  .article-title{font-size:28px;line-height:1.3}
  .article-meta{font-size:12.5px;gap:8px}
  .article-body{font-size:16px}
  .article-body table{font-size:14px}
  .article-body th,.article-body td{padding:10px}
}

/* roulang page: category1 */
:root{
  --ink-900:#0B1F1E;
  --ink-800:#12302E;
  --brick-600:#C75B39;
  --sand-500:#B4915C;
  --paper-50:#F7F4EE;
  --panel:#FFFFFF;
  --panel-alt:#EFEAE1;
  --text-900:#16211F;
  --text-600:#586661;
  --text-400:#8A9691;
  --line:#E3DDD1;
  --line-dark:rgba(255,255,255,.14);
  --r-card:6px;
  --r-img:4px;
  --r-btn:4px;
  --shadow-1:0 1px 2px rgba(11,31,30,.06);
  --shadow-2:0 10px 28px -12px rgba(11,31,30,.18);
  --ease:cubic-bezier(.22,.61,.36,1);
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,"Times New Roman",serif;
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --num:"Inter","Space Grotesk","Helvetica Neue",Arial,sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper-50);
  color:var(--text-900);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.75;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,h5,h6{
  font-family:var(--serif);
  font-weight:600;
  letter-spacing:-.01em;
  line-height:1.22;
  color:var(--ink-800);
  margin:0;
}
p{margin:0 0 12px}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0}
img{max-width:100%;display:block;border:0}
a{color:var(--ink-800);text-decoration:none;transition:color .22s var(--ease)}
a:hover{color:var(--brick-600)}
button{font-family:inherit;font-size:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,select,textarea{font-family:inherit;font-size:inherit}
:focus-visible{outline:2px solid var(--brick-600);outline-offset:2px}
[id]{scroll-margin-top:84px}
::selection{background:rgba(199,91,57,.18);color:var(--ink-900)}

.wrap{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section--tight{padding:64px 0}

/* ---------- header ---------- */
.site-header{position:relative;z-index:60;background:var(--paper-50)}
.topbar{border-bottom:1px solid var(--line)}
.topbar__inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink-800);flex:none}
.brand__mark{width:28px;height:28px;color:var(--brick-600);flex:none}
.brand__text{font-family:var(--serif);font-size:19px;font-weight:700;letter-spacing:.01em;white-space:nowrap}
.brand__text em{font-style:normal;color:var(--brick-600)}
.brand:hover{color:var(--ink-800)}

.topbar__tools{display:flex;align-items:center;gap:12px;min-width:0}

.search{
  position:relative;display:flex;align-items:center;
  width:240px;height:38px;
  border:1px solid var(--line);border-radius:999px;
  background:var(--panel);
  transition:width .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.search:focus-within{width:320px;border-color:var(--ink-800);box-shadow:0 0 0 2px rgba(199,91,57,.18)}
.search__icon{width:16px;height:16px;margin-left:13px;color:var(--text-400);flex:none}
.search__input{
  flex:1;min-width:0;height:100%;
  border:0;background:none;outline:none;
  padding:0 8px;font-size:14px;color:var(--text-900);
}
.search__input::placeholder{color:var(--text-400)}
.search__clear{
  flex:none;width:26px;height:26px;margin-right:6px;line-height:1;
  border-radius:999px;font-size:17px;color:var(--text-400);
  opacity:.45;transition:opacity .2s var(--ease),background .2s var(--ease);
}
.search__clear:hover{opacity:.9;background:var(--panel-alt)}
.search__clear.is-on{opacity:.85}

.channelbar{
  position:sticky;top:0;z-index:55;
  background:rgba(247,244,238,.94);
  backdrop-filter:saturate(140%) blur(6px);
  border-bottom:1px solid var(--line);
}
.channelbar__inner{position:relative;display:flex;align-items:center;height:52px}
.channelbar .tabs{
  display:flex;align-items:center;gap:0;
  margin:0;padding:0 40px 0 0;
  list-style:none;border:0;background:none;
  overflow-x:auto;scroll-snap-type:x proximity;
  -webkit-overflow-scrolling:touch;scrollbar-width:none;
}
.channelbar .tabs::-webkit-scrollbar{display:none}
.tab{
  flex:none;scroll-snap-align:start;
  display:inline-block;
  padding:14px 0;margin-right:28px;
  font-size:15px;color:var(--text-600);
  border-bottom:2px solid transparent;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.tab:hover{color:var(--ink-800)}
.tab.is-active{color:var(--ink-800);border-bottom-color:var(--brick-600);font-weight:600}
.tabs-fade{
  position:absolute;right:0;top:0;bottom:0;width:48px;
  background:linear-gradient(to right,rgba(247,244,238,0),var(--paper-50));
  pointer-events:none;
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  font-size:15px;font-weight:500;line-height:1;
  cursor:pointer;
  transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
}
.btn--primary{background:var(--ink-800);color:#fff;border-color:var(--ink-800)}
.btn--primary:hover{background:var(--brick-600);border-color:var(--brick-600);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn--ghost{background:transparent;border-color:var(--ink-800);color:var(--ink-800)}
.btn--ghost:hover{background:rgba(18,48,46,.06);color:var(--ink-800)}
.btn--sm{height:38px;padding:0 16px;font-size:14px}
.btn--block{display:flex;width:100%}
.btn:disabled,.btn.is-disabled{opacity:.4;pointer-events:none}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:500;color:var(--ink-800)}
.link-arrow span[aria-hidden]{transition:transform .22s var(--ease)}
.link-arrow:hover{color:var(--brick-600)}
.link-arrow:hover span[aria-hidden]{transform:translateX(3px)}

/* ---------- page hero ---------- */
.page-hero{position:relative;overflow:hidden;padding:44px 0 72px;border-bottom:1px solid var(--line)}
.page-hero__bg{
  position:absolute;inset:0;
  background-image:url(/assets/images/backpic/back-2.webp);
  background-size:cover;background-position:center;
  opacity:.06;pointer-events:none;
}
.page-hero > .wrap{position:relative;z-index:1}

.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-400);margin-bottom:26px}
.crumb a{color:var(--text-600)}
.crumb a:hover{color:var(--brick-600)}
.crumb span[aria-hidden]{color:var(--line)}

.eyebrow{
  display:inline-block;margin:0 0 14px;
  font-family:var(--num);font-size:12px;letter-spacing:.12em;
  text-transform:uppercase;color:var(--sand-500);font-weight:500;
}
.page-hero h1{font-size:clamp(30px,4vw,46px);max-width:19em}
.page-hero__sub{margin-top:18px;max-width:34em;font-size:17px;color:var(--text-600);line-height:1.8}

.facts{
  display:flex;flex-wrap:wrap;gap:40px;
  margin:30px 0 0;padding:22px 0 0;
  border-top:1px solid var(--line);list-style:none;
}
.facts li{display:flex;flex-direction:column;gap:4px}
.facts__k{font-size:12px;letter-spacing:.08em;color:var(--text-400)}
.facts__v{font-family:var(--num);font-size:15px;font-weight:600;color:var(--ink-800)}

.hero-figure{
  position:relative;margin:0;overflow:hidden;
  border:1px solid var(--sand-500);border-radius:var(--r-img);
  background:var(--panel-alt);
}
.hero-figure img{width:100%;aspect-ratio:5/4;object-fit:cover;transition:transform .5s var(--ease)}
.hero-figure:hover img{transform:scale(1.03)}
.hero-figure figcaption{
  position:absolute;left:0;right:0;bottom:0;
  padding:16px 18px;font-size:13px;line-height:1.6;color:#fff;
  background:linear-gradient(to top,rgba(11,31,30,.78),rgba(11,31,30,0));
}

/* ---------- section headings ---------- */
.sec-head{margin-bottom:40px;max-width:720px}
.sec-head h2{font-size:clamp(24px,3vw,32px)}
.sec-desc{margin-top:14px;color:var(--text-600);font-size:16px}

/* ---------- steps ---------- */
.steps{list-style:none;margin:0;padding:0}
.step{display:flex;gap:24px;padding:28px 0;border-top:1px solid var(--line)}
.step:last-child{border-bottom:1px solid var(--line)}
.step__num{
  flex:none;width:56px;padding-top:2px;
  font-family:var(--serif);font-size:30px;font-weight:700;line-height:1;
  color:var(--brick-600);font-variant-numeric:tabular-nums;
}
.step__body{min-width:0}
.step__body h3{font-size:20px;margin-bottom:8px}
.step__body p{font-size:16px;color:var(--text-600);margin:0 0 10px}
.step__note{
  font-size:13px;line-height:1.7;color:var(--text-400);
  border-left:2px solid var(--sand-500);padding-left:10px;margin:0;
}

/* ---------- sidebar ---------- */
.side__card{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--shadow-1);margin-bottom:20px;
}
.side__card h3{font-size:17px;margin-bottom:14px}
.side__nav{list-style:none;margin:0;padding:0}
.side__nav li{margin-bottom:2px}
.side__nav a{
  display:block;padding:9px 0 9px 14px;
  font-size:14px;color:var(--text-600);
  border-left:2px solid var(--line);
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.side__nav a:hover{color:var(--brick-600);border-left-color:var(--brick-600);background:rgba(199,91,57,.05)}
.side__card--cta{background:var(--ink-800);border-color:var(--ink-800)}
.side__card--cta h3{color:#fff}
.side__card--cta p{color:rgba(247,244,238,.74);font-size:14px;line-height:1.75;margin-bottom:18px}
.side__card--cta .btn{background:var(--paper-50);color:var(--ink-800);border-color:var(--paper-50)}
.side__card--cta .btn:hover{background:var(--brick-600);border-color:var(--brick-600);color:#fff}
@media (min-width:1024px){
  .side{position:sticky;top:88px}
}

/* ---------- table ---------- */
.table-scroll{
  overflow-x:auto;border:1px solid var(--line);
  border-radius:var(--r-card);background:var(--panel);box-shadow:var(--shadow-1);
}
.spec-table{width:100%;min-width:660px;border-collapse:collapse;margin:0;font-size:15px}
.spec-table thead th{
  background:var(--panel-alt);color:var(--ink-800);
  text-align:left;font-size:13px;font-weight:600;letter-spacing:.04em;
  padding:14px 20px;border-bottom:1px solid var(--line);font-family:var(--sans);
}
.spec-table tbody td{
  padding:16px 20px;border-bottom:1px solid var(--line);
  color:var(--text-600);vertical-align:top;line-height:1.7;
}
.spec-table tbody tr:nth-child(even){background:var(--panel-alt)}
.spec-table tbody tr:last-child td{border-bottom:0}
.spec-table tbody td:first-child{
  color:var(--ink-800);font-weight:600;font-family:var(--serif);font-size:16px;white-space:nowrap;
}
.table-note{margin-top:14px;font-size:13px;color:var(--text-400)}

/* ---------- issue list ---------- */
.issue-grid{
  display:grid;grid-template-columns:repeat(3,1fr);
  border-top:1px solid var(--line);
}
.issue{padding:28px 28px 28px 0;border-bottom:1px solid var(--line);min-width:0}
.issue + .issue{border-left:1px solid var(--line);padding-left:28px}
.issue__num{
  display:block;font-family:var(--serif);font-size:22px;font-weight:700;
  color:var(--brick-600);line-height:1;margin-bottom:14px;font-variant-numeric:tabular-nums;
}
.issue h3{font-size:19px;margin-bottom:10px}
.issue p{font-size:15px;color:var(--text-600);margin-bottom:14px}

/* ---------- faq ---------- */
.faq{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item__h{margin:0;font-family:inherit;font-weight:400}
.faq-item__head{
  display:flex;align-items:center;gap:18px;width:100%;
  padding:22px 0;text-align:left;
  transition:color .2s var(--ease);
}
.faq-item__num{
  flex:none;font-family:var(--num);font-size:13px;font-weight:600;
  color:var(--sand-500);letter-spacing:.06em;font-variant-numeric:tabular-nums;
}
.faq-item__title{
  flex:1;min-width:0;font-family:var(--serif);font-size:18px;font-weight:600;
  color:var(--ink-800);line-height:1.5;transition:color .2s var(--ease);
}
.faq-item__head:hover .faq-item__title{color:var(--brick-600)}
.faq-item__icon{position:relative;flex:none;width:16px;height:16px;transition:transform .24s var(--ease)}
.faq-item__icon::before,
.faq-item__icon::after{content:"";position:absolute;background:var(--brick-600);border-radius:1px}
.faq-item__icon::before{left:0;top:7px;width:16px;height:2px}
.faq-item__icon::after{top:0;left:7px;width:2px;height:16px}
.faq-item.is-open .faq-item__icon{transform:rotate(45deg)}
.faq-item__panel{
  padding:0 0 24px 22px;margin-left:22px;
  border-left:3px solid var(--brick-600);
  font-size:16px;color:var(--text-600);line-height:1.8;
}
.faq-item__panel p{margin:0}

/* ---------- cta band ---------- */
.cta-band{background:var(--ink-900);color:#fff;position:relative;overflow:hidden}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(circle at 82% 18%,rgba(180,145,92,.16),transparent 46%);
  pointer-events:none;
}
.cta-band .wrap{position:relative;z-index:1}
.cta-band__inner{
  display:flex;align-items:center;justify-content:space-between;gap:36px;
  padding:56px 0;
}
.cta-band__txt{max-width:560px}
.cta-band h2{color:#fff;font-size:clamp(22px,2.6vw,30px)}
.cta-band p{margin-top:12px;color:rgba(247,244,238,.72);font-size:15px;line-height:1.75}
.cta-band__actions{display:flex;gap:12px;flex-wrap:wrap;flex:none}
.cta-band .btn--primary{background:var(--brick-600);border-color:var(--brick-600);color:#fff}
.cta-band .btn--primary:hover{background:#d9673f;border-color:#d9673f}
.cta-band .btn--ghost{border-color:rgba(247,244,238,.42);color:var(--paper-50)}
.cta-band .btn--ghost:hover{background:rgba(247,244,238,.1);color:#fff;border-color:rgba(247,244,238,.7)}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-900);color:rgba(247,244,238,.72);padding:72px 0 0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.3fr;gap:44px;padding-bottom:52px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;color:#fff;font-family:var(--serif);font-size:18px;font-weight:700}
.footer-brand .brand__mark{color:var(--sand-500)}
.footer-about{font-size:14px;line-height:1.8;color:rgba(247,244,238,.6);max-width:340px;margin:0}
.footer-col h4{
  font-family:var(--sans);font-size:13px;font-weight:600;letter-spacing:.08em;
  color:var(--sand-500);margin-bottom:16px;
}
.footer-col ul{list-style:none;margin:0;padding:0}
.footer-col li{margin-bottom:10px;font-size:14px}
.footer-col a{color:rgba(247,244,238,.72)}
.footer-col a:hover{color:var(--paper-50);text-decoration:underline;text-underline-offset:3px}
.footer-contact li{color:rgba(247,244,238,.62);font-size:13.5px;line-height:1.7}
.footer-contact strong{color:rgba(247,244,238,.92);font-weight:600;margin-right:2px}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  border-top:1px solid var(--line-dark);
  padding:22px 0 26px;font-size:13px;color:rgba(247,244,238,.46);
}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1200px){
  .search{width:210px}
  .search:focus-within{width:290px}
}
@media (max-width:1023px){
  .section{padding:72px 0}
  .section--tight{padding:52px 0}
  .topbar__inner{height:64px;gap:16px}
  .search{display:none}
  .page-hero{padding:32px 0 56px}
  .hero-figure,.page-hero .cell + .cell{margin-top:32px}
  .issue-grid{grid-template-columns:1fr}
  .issue{padding:24px 0}
  .issue + .issue{border-left:0;padding-left:0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .cta-band__inner{flex-direction:column;align-items:flex-start;gap:24px;padding:44px 0}
}
@media (max-width:767px){
  .wrap{padding:0 20px}
  .topbar__inner{height:60px;flex-wrap:nowrap}
  .brand__text{font-size:16px}
  .brand__mark{width:24px;height:24px}
  .btn--sm{height:34px;padding:0 12px;font-size:13px}
  .tab{font-size:14px;margin-right:20px}
  .page-hero h1{font-size:30px}
  .page-hero__sub{font-size:16px}
  .facts{gap:24px}
  .facts li{flex:1 1 40%}
  .step{gap:16px;padding:24px 0}
  .step__num{width:40px;font-size:24px}
  .step__body h3{font-size:18px}
  .faq-item__title{font-size:16px}
  .faq-item__head{gap:12px;padding:18px 0}
  .faq-item__panel{margin-left:12px;padding-left:16px;font-size:15px}
  .footer-grid{grid-template-columns:1fr;gap:32px;padding-bottom:36px}
  .site-footer{padding-top:52px}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (max-width:479px){
  .topbar__tools .btn--ghost{display:none}
  .cta-band__actions .btn{width:100%}
}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category2 */
:root{
  --ink-900:#0B1F1E;
  --ink-800:#12302E;
  --brick-600:#C75B39;
  --sand-500:#B4915C;
  --paper-50:#F7F4EE;
  --panel:#FFFFFF;
  --panel-alt:#EFEAE1;
  --text-900:#16211F;
  --text-600:#586661;
  --text-400:#8A9691;
  --line:#E3DDD1;
  --line-dark:rgba(255,255,255,.14);
  --r-card:6px;
  --r-img:4px;
  --r-btn:4px;
  --shadow-1:0 1px 2px rgba(11,31,30,.06);
  --shadow-2:0 10px 28px -12px rgba(11,31,30,.18);
  --ease:cubic-bezier(.22,.61,.36,1);
  --wrap:1240px;
  --serif:"Noto Serif SC","Songti SC","Source Han Serif SC",Georgia,"Times New Roman",serif;
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;
  --num:"Inter","Space Grotesk","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper-50);
  color:var(--text-900);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.75;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
h1,h2,h3,h4,h5,h6{font-family:var(--serif);font-weight:600;letter-spacing:-0.01em;line-height:1.22;color:var(--ink-800);margin:0 0 14px}
p{margin:0 0 16px}
a{color:var(--ink-800);text-decoration:none;transition:color .24s var(--ease)}
a:hover{color:var(--brick-600)}
img{max-width:100%;display:block;border-radius:var(--r-img)}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
input,button,select,textarea{font-family:inherit;font-size:inherit}
:focus-visible{outline:2px solid var(--brick-600);outline-offset:2px;border-radius:2px}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px;width:100%}
.section{padding:96px 0}
main{display:block;scroll-margin-top:64px}
[id]{scroll-margin-top:72px}

/* ---------- 顶部导航 ---------- */
.site-header{position:relative;z-index:60;background:var(--paper-50);border-bottom:1px solid var(--line)}
.topbar{background:rgba(247,244,238,.94);backdrop-filter:blur(6px);border-bottom:1px solid var(--line)}
.topbar__inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink-800);flex:0 0 auto}
.brand:hover{color:var(--ink-800)}
.brand__mark{width:30px;height:30px;color:var(--brick-600);flex:0 0 auto}
.brand__text{font-family:var(--serif);font-size:20px;font-weight:700;letter-spacing:.01em;white-space:nowrap}
.brand__text em{font-style:normal;color:var(--brick-600)}
.topbar__tools{display:flex;align-items:center;gap:12px}
.search{position:relative;display:flex;align-items:center;width:240px;transition:width .26s var(--ease)}
.search:focus-within{width:320px}
.search__icon{position:absolute;left:12px;width:16px;height:16px;color:var(--text-400);pointer-events:none}
.search__input{
  width:100%;height:38px;padding:0 34px 0 36px;border:1px solid var(--line);border-radius:var(--r-btn);
  background:var(--panel);color:var(--text-900);font-size:14px;line-height:36px;transition:border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.search__input::placeholder{color:var(--text-400)}
.search__input:focus{outline:none;border-color:var(--ink-800);box-shadow:0 0 0 2px rgba(199,91,57,.25)}
.search__clear{
  position:absolute;right:6px;width:24px;height:24px;border:0;border-radius:999px;background:transparent;
  color:var(--text-400);font-size:16px;line-height:1;cursor:pointer;display:none;
}
.search__clear:hover{background:var(--panel-alt);color:var(--ink-800)}
.search.has-value .search__clear{display:block}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:500;line-height:1;cursor:pointer;white-space:nowrap;
  transition:background-color .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease),transform .24s var(--ease),box-shadow .24s var(--ease);
}
.btn--primary{background:var(--ink-800);border-color:var(--ink-800);color:#fff}
.btn--primary:hover{background:var(--brick-600);border-color:var(--brick-600);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn--ghost{background:transparent;border-color:rgba(18,48,46,.28);color:var(--ink-800)}
.btn--ghost:hover{background:rgba(18,48,46,.06);border-color:var(--ink-800);color:var(--ink-800);transform:translateY(-1px)}
.btn--sm{height:38px;padding:0 16px;font-size:14px}
.btn--light{background:var(--brick-600);border-color:var(--brick-600);color:#fff}
.btn--light:hover{background:#fff;border-color:#fff;color:var(--ink-800);transform:translateY(-1px)}
.btn--line{background:transparent;border-color:rgba(255,255,255,.36);color:#fff}
.btn--line:hover{background:rgba(255,255,255,.1);border-color:#fff;color:#fff}
.btn[disabled],.btn.is-disabled{opacity:.4;pointer-events:none}

.channelbar{position:sticky;top:0;z-index:50;background:rgba(247,244,238,.97);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.channelbar__inner{position:relative;display:flex;align-items:center;height:52px}
.tabs{
  display:flex;align-items:center;gap:28px;overflow-x:auto;scroll-snap-type:x proximity;
  -ms-overflow-style:none;scrollbar-width:none;height:100%;
}
.tabs::-webkit-scrollbar{display:none}
.tab{
  position:relative;flex:0 0 auto;scroll-snap-align:start;height:52px;display:inline-flex;align-items:center;
  font-size:15px;color:var(--text-600);white-space:nowrap;transition:color .24s var(--ease);
}
.tab::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--brick-600);
  transform:scaleX(0);transform-origin:left;transition:transform .26s var(--ease);
}
.tab:hover{color:var(--ink-800)}
.tab:hover::after{transform:scaleX(1)}
.tab.is-active{color:var(--ink-800);font-weight:500}
.tab.is-active::after{transform:scaleX(1)}
.tabs-fade{position:absolute;right:0;top:0;bottom:0;width:56px;pointer-events:none;background:linear-gradient(90deg,rgba(247,244,238,0),rgba(247,244,238,.96))}

/* ---------- 页头 ---------- */
.page-head{position:relative;overflow:hidden;border-bottom:1px solid var(--line);padding:52px 0 56px}
.page-head::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:url(/assets/images/backpic/back-1.png);
  background-size:cover;background-position:center right;opacity:.07;
}
.page-head .wrap{position:relative;z-index:1}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-400);margin-bottom:22px}
.crumbs a{color:var(--text-600)}
.crumbs a:hover{color:var(--brick-600)}
.crumbs span{color:var(--text-400)}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;font-family:var(--num);
  font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--brick-600);font-weight:600;
}
.eyebrow::before{content:"";width:30px;height:1px;background:var(--sand-500)}
.page-title{font-size:48px;margin:18px 0 18px;max-width:22ch}
.page-lede{font-size:17px;color:var(--text-600);max-width:62ch;margin-bottom:0}
.facts{display:flex;flex-wrap:wrap;gap:20px 56px;margin-top:34px;padding-top:22px;border-top:1px solid var(--line)}
.fact__num{font-family:var(--num);font-size:26px;font-weight:600;color:var(--ink-800);font-variant-numeric:tabular-nums;line-height:1.2}
.fact__label{font-size:13px;color:var(--text-400);margin-top:2px}
.head-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}

/* ---------- 板块通用 ---------- */
.section--alt{background:var(--panel-alt)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:40px}
.section-head h2{font-size:32px;margin:0 0 10px}
.section-head p{color:var(--text-600);font-size:15.5px;margin:0;max-width:60ch}
.section-kicker{font-family:var(--num);font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--sand-500);font-weight:600;display:block;margin-bottom:10px}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:14.5px;color:var(--ink-800);font-weight:500;border-bottom:1px solid transparent;padding-bottom:2px}
.link-more .arrow{transition:transform .24s var(--ease)}
.link-more:hover{color:var(--brick-600);border-bottom-color:var(--brick-600)}
.link-more:hover .arrow{transform:translateX(3px)}

/* ---------- 筛选 pill ---------- */
.filter-bar{
  display:flex;align-items:center;gap:10px;overflow-x:auto;scroll-snap-type:x proximity;
  padding:2px 0 18px;margin-bottom:22px;border-bottom:1px solid var(--line);
  -ms-overflow-style:none;scrollbar-width:none;
}
.filter-bar::-webkit-scrollbar{display:none}
.pill{
  flex:0 0 auto;scroll-snap-align:start;height:36px;padding:0 18px;border-radius:999px;
  border:1px solid var(--line);background:var(--panel);color:var(--text-600);
  font-size:13.5px;line-height:34px;cursor:pointer;
  transition:background-color .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease),transform .24s var(--ease);
}
.pill:hover{border-color:var(--sand-500);color:var(--ink-800);transform:translateY(-1px)}
.pill.is-active{background:var(--ink-800);border-color:var(--ink-800);color:#fff}

/* ---------- 模块卡片 ---------- */
.mod-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.mod-card{
  grid-column:span 7;background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow-1);overflow:hidden;display:flex;flex-direction:column;
  transition:box-shadow .26s var(--ease),transform .26s var(--ease),border-color .26s var(--ease);
}
.mod-card--sm{grid-column:span 5}
.mod-card--half{grid-column:span 6}
.mod-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#D6CEBD}
.mod-card.is-focus{border-color:var(--brick-600);box-shadow:0 0 0 2px rgba(199,91,57,.18)}
.mod-card__media{position:relative;overflow:hidden;aspect-ratio:16/10;background:var(--panel-alt)}
.mod-card__media img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .4s var(--ease)}
.mod-card:hover .mod-card__media img{transform:scale(1.03)}
.mod-card__label{
  position:absolute;left:16px;bottom:16px;background:rgba(247,244,238,.95);border:1px solid var(--sand-500);
  color:var(--ink-800);font-size:12.5px;padding:3px 12px;border-radius:999px;line-height:1.6;
}
.mod-card__body{padding:24px 28px 26px;display:flex;flex-direction:column;flex:1}
.mod-card__body h3{font-size:21px;margin:0 0 10px}
.mod-card--sm .mod-card__body h3{font-size:19px}
.mod-card__body p{font-size:15px;color:var(--text-600);margin:0 0 16px}
.mod-card__points{margin:0 0 20px;display:grid;gap:8px}
.mod-card__points li{position:relative;padding-left:16px;font-size:14px;color:var(--text-600);line-height:1.7}
.mod-card__points li::before{content:"";position:absolute;left:0;top:9px;width:6px;height:1px;background:var(--brick-600)}
.tag{
  display:inline-flex;align-items:center;height:24px;padding:0 11px;border-radius:999px;
  border:1px solid var(--sand-500);background:var(--paper-50);color:var(--ink-800);
  font-size:12.5px;line-height:22px;margin-bottom:14px;align-self:flex-start;
}
.mod-card__foot{margin-top:auto}

/* ---------- 对照表 ---------- */
.table-wrap{
  overflow-x:auto;background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow-1);-webkit-overflow-scrolling:touch;
}
table.compare{width:100%;min-width:760px;border-collapse:collapse;font-size:14.5px}
table.compare caption{
  text-align:left;padding:18px 22px 0;font-size:13px;color:var(--text-400);caption-side:top;
}
table.compare thead th{
  background:rgba(18,48,46,.07);color:var(--ink-800);font-size:13px;font-weight:600;letter-spacing:.02em;
  text-align:left;padding:15px 22px;border-bottom:1px solid var(--line);white-space:nowrap;
}
table.compare tbody td{padding:15px 22px;border-top:1px solid var(--line);color:var(--text-600);vertical-align:middle}
table.compare tbody th{
  padding:15px 22px;border-top:1px solid var(--line);text-align:left;color:var(--text-900);
  font-weight:500;font-family:var(--sans);font-size:14.5px;white-space:nowrap;
}
table.compare tbody tr:nth-child(even){background:var(--panel-alt)}
table.compare tbody tr:hover{background:#EAE4D8}
.state{display:inline-flex;align-items:center;padding:2px 11px;border-radius:999px;font-size:12.5px;line-height:1.7;border:1px solid}
.state--yes{color:var(--ink-800);border-color:rgba(18,48,46,.25);background:rgba(18,48,46,.05)}
.state--part{color:var(--brick-600);border-color:rgba(199,91,57,.35);background:rgba(199,91,57,.07)}
.state--no{color:var(--text-400);border-color:var(--line);background:rgba(255,255,255,.6)}
.table-note{font-size:13px;color:var(--text-400);margin:16px 0 0}

/* ---------- 编号列表 ---------- */
.choice-list{border-top:1px solid var(--line)}
.choice{display:grid;grid-template-columns:96px 1fr;gap:28px;padding:30px 0;border-bottom:1px solid var(--line)}
.choice__num{font-family:var(--serif);font-size:36px;font-weight:600;color:var(--sand-500);line-height:1;font-variant-numeric:tabular-nums}
.choice h3{font-size:20px;margin:0 0 8px}
.choice p{margin:0;font-size:15.5px;color:var(--text-600);max-width:70ch}
.choice__note{display:inline-block;margin-top:10px;font-size:13px;color:var(--text-400)}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:first-child{border-top:1px solid var(--line)}
.faq-btn{
  width:100%;display:flex;align-items:center;gap:16px;padding:24px 0;background:none;border:0;
  text-align:left;cursor:pointer;color:var(--text-900);font-size:17px;line-height:1.6;
  transition:color .24s var(--ease);
}
.faq-btn:hover{color:var(--brick-600)}
.faq-btn__idx{font-family:var(--num);font-size:13px;color:var(--sand-500);flex:0 0 34px;font-variant-numeric:tabular-nums}
.faq-btn__text{flex:1}
.faq-btn__icon{position:relative;flex:0 0 20px;width:20px;height:20px;transition:transform .26s var(--ease)}
.faq-btn__icon::before,.faq-btn__icon::after{
  content:"";position:absolute;background:var(--brick-600);border-radius:1px;transition:opacity .26s var(--ease);
}
.faq-btn__icon::before{left:0;top:9px;width:20px;height:1.5px}
.faq-btn__icon::after{left:9px;top:0;width:1.5px;height:20px}
.faq-item.is-open .faq-btn__icon{transform:rotate(45deg)}
.faq-panel{display:none;padding:0 0 24px 50px}
.faq-item.is-open .faq-panel{display:block}
.faq-panel p{margin:0;font-size:15.5px;line-height:1.8;color:var(--text-600);padding-left:16px;border-left:3px solid var(--brick-600)}

/* ---------- CTA 条 ---------- */
.cta-band{background:var(--ink-900);color:#fff;padding:72px 0;position:relative;overflow:hidden}
.cta-band::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.05;
  background-image:url(/assets/images/backpic/back-3.webp);background-size:cover;background-position:center;
}
.cta-band .wrap{position:relative;z-index:1}
.cta-band__inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-band h2{color:#fff;font-size:30px;margin:0 0 10px}
.cta-band p{color:rgba(255,255,255,.72);margin:0;font-size:15px;max-width:56ch}
.cta-band__actions{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.72);padding:64px 0 0;font-size:14.5px}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.3fr;gap:40px;padding-bottom:48px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-family:var(--serif);font-size:18px;font-weight:700;margin-bottom:14px}
.footer-brand .brand__mark{color:var(--sand-500);width:26px;height:26px}
.footer-about{color:rgba(255,255,255,.6);font-size:14px;line-height:1.8;margin:0;max-width:34ch}
.footer-col h4{font-family:var(--sans);font-size:13px;font-weight:600;letter-spacing:.06em;color:var(--sand-500);margin:0 0 16px}
.footer-col ul{display:grid;gap:10px}
.footer-col a{color:rgba(255,255,255,.72);font-size:14px;border-bottom:1px solid transparent;padding-bottom:1px}
.footer-col a:hover{color:var(--paper-50);border-bottom-color:var(--paper-50)}
.footer-contact li{color:rgba(255,255,255,.66);font-size:14px;line-height:1.7}
.footer-contact strong{color:rgba(255,255,255,.9);font-weight:500;margin-right:4px}
.footer-bottom{
  border-top:1px solid var(--line-dark);padding:20px 0;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- 进入动效 ---------- */
.has-js .reveal{opacity:0;transform:translateY(12px);transition:opacity .55s var(--ease),transform .55s var(--ease)}
.has-js .reveal.is-in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1200px){
  .page-title{font-size:44px}
  .section{padding:84px 0}
}
@media (max-width:1023px){
  .page-title{font-size:38px}
  .section{padding:72px 0}
  .section-head h2{font-size:28px}
  .mod-grid{grid-template-columns:repeat(2,1fr)}
  .mod-card,.mod-card--sm,.mod-card--half{grid-column:auto}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px}
  .footer-grid > div:first-child{grid-column:1 / -1}
}
@media (max-width:900px){
  .search{display:none}
  .topbar__inner{height:64px}
  .page-head{padding:40px 0 44px}
  .page-title{font-size:34px;max-width:none}
  .choice{grid-template-columns:64px 1fr;gap:18px}
  .choice__num{font-size:28px}
}
@media (max-width:640px){
  .wrap{padding:0 20px}
  .section{padding:56px 0}
  .topbar__inner{height:60px;gap:12px}
  .brand__text{font-size:17px}
  .brand__mark{width:26px;height:26px}
  .topbar__tools .btn--ghost{display:none}
  .btn--sm{height:34px;padding:0 13px;font-size:13.5px}
  .tabs{gap:20px}
  .tab{font-size:14px}
  .page-title{font-size:30px;line-height:1.26}
  .page-lede{font-size:15.5px}
  .facts{gap:16px 32px;margin-top:26px}
  .fact__num{font-size:22px}
  .head-actions .btn{flex:1 1 100%}
  .mod-grid{grid-template-columns:1fr;gap:18px}
  .mod-card__body{padding:20px 20px 22px}
  .mod-card__body h3{font-size:19px}
  .section-head h2{font-size:24px}
  .choice{grid-template-columns:1fr;gap:8px;padding:24px 0}
  .faq-btn{font-size:15.5px;padding:20px 0;gap:12px}
  .faq-panel{padding-left:0;padding-bottom:20px}
  .faq-panel p{padding-left:14px}
  .cta-band{padding:56px 0}
  .cta-band h2{font-size:24px}
  .cta-band__actions{width:100%}
  .cta-band__actions .btn{flex:1 1 100%}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:36px}
  .footer-bottom{flex-direction:column;gap:6px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
  .has-js .reveal{opacity:1;transform:none}
}

/* roulang page: category3 */
:root{
  --ink-900:#0B1F1E;
  --ink-800:#12302E;
  --brick-600:#C75B39;
  --sand-500:#B4915C;
  --paper-50:#F7F4EE;
  --panel:#FFFFFF;
  --panel-alt:#EFEAE1;
  --text-900:#16211F;
  --text-600:#586661;
  --text-400:#8A9691;
  --line:#E3DDD1;
  --line-dark:rgba(255,255,255,.14);
  --radius-card:6px;
  --radius-img:4px;
  --radius-btn:4px;
  --shadow-1:0 1px 2px rgba(11,31,30,.06);
  --shadow-2:0 10px 28px -12px rgba(11,31,30,.18);
  --ease:cubic-bezier(.22,.61,.36,1);
  --serif:"Noto Serif SC","Songti SC","Source Han Serif SC",Georgia,serif;
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --num:"Inter","Space Grotesk","Helvetica Neue",Arial,sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--paper-50);
  color:var(--text-900);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
h1,h2,h3,h4{
  font-family:var(--serif);
  font-weight:700;
  letter-spacing:-.01em;
  line-height:1.22;
  color:var(--ink-900);
  margin:0;
}
p{margin:0}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease)}
img{max-width:100%;display:block;height:auto}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;color:inherit}
input,textarea,select{font:inherit}
:focus-visible{outline:2px solid var(--brick-600);outline-offset:2px}
::selection{background:rgba(199,91,57,.22)}

.wrap{max-width:1240px;margin:0 auto;padding:0 24px;width:100%}

/* ---------- header ---------- */
.site-header{position:relative;z-index:70;background:var(--panel)}
.topbar{border-bottom:1px solid var(--line);background:var(--panel)}
.topbar__inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:24px;height:72px;
}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand__mark{width:32px;height:32px;color:var(--brick-600);flex:0 0 32px}
.brand__text{
  font-family:var(--serif);font-size:20px;font-weight:700;color:var(--ink-900);
  letter-spacing:.02em;white-space:nowrap;
}
.brand__text em{font-style:normal;color:var(--brick-600)}
.topbar__tools{display:flex;align-items:center;gap:12px;flex:0 1 auto}

.search{position:relative;display:flex;align-items:center;width:240px;transition:width .24s var(--ease)}
.search:focus-within{width:320px}
.search__icon{
  position:absolute;left:11px;width:16px;height:16px;color:var(--text-400);
  pointer-events:none;transition:color .2s var(--ease);
}
.search__input{
  width:100%;height:40px;margin:0;
  border:1px solid var(--line);border-radius:var(--radius-btn);
  background:var(--panel-alt);color:var(--text-900);
  padding:0 34px 0 34px;font-size:14px;
  transition:border-color .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease);
  box-shadow:none;
}
.search__input::placeholder{color:var(--text-400)}
.search__input:focus{
  outline:none;border-color:var(--ink-800);background:var(--panel);
  box-shadow:0 0 0 2px rgba(199,91,57,.25);
}
.search:focus-within .search__icon{color:var(--ink-800)}
.search__clear{
  position:absolute;right:8px;display:none;align-items:center;justify-content:center;
  width:22px;height:22px;border:none;background:transparent;
  color:var(--text-400);font-size:16px;line-height:1;border-radius:50%;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.search__clear:hover{color:var(--brick-600);background:rgba(199,91,57,.10)}
.search.has-value .search__clear{display:flex}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--radius-btn);
  border:1px solid transparent;font-size:15px;font-weight:500;
  white-space:nowrap;cursor:pointer;text-align:center;
  transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
}
.btn--primary{background:var(--ink-800);color:#fff;border-color:var(--ink-800)}
.btn--primary:hover{background:var(--brick-600);border-color:var(--brick-600);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn--ghost{background:transparent;color:var(--ink-800);border-color:var(--ink-800)}
.btn--ghost:hover{background:rgba(18,48,46,.06);transform:translateY(-1px)}
.btn--light{background:var(--panel);color:var(--ink-900);border-color:var(--panel)}
.btn--light:hover{background:var(--brick-600);color:#fff;border-color:var(--brick-600);transform:translateY(-1px)}
.btn--sm{height:38px;padding:0 16px;font-size:14px}
.btn--wide{width:100%}
.btn--text{height:auto;padding:0;border:none;background:none;color:var(--ink-800);font-weight:500}
.btn--text .arw{transition:transform .22s var(--ease)}
.btn--text:hover{color:var(--brick-600)}
.btn--text:hover .arw{transform:translateX(3px)}
.btn:disabled,.btn[disabled]{opacity:.4;pointer-events:none}

/* ---------- channel bar ---------- */
.channelbar{
  position:sticky;top:0;z-index:60;
  background:var(--panel);border-bottom:1px solid var(--line);
  box-shadow:0 1px 0 rgba(11,31,30,.02);
}
.channelbar__inner{position:relative}
.tabs{
  display:flex;align-items:stretch;gap:4px;margin:0;padding:0;border:0;background:transparent;
  overflow-x:auto;scroll-snap-type:x mandatory;
  -ms-overflow-style:none;scrollbar-width:none;
}
.tabs::-webkit-scrollbar{display:none}
.tab{
  flex:0 0 auto;display:inline-flex;align-items:center;
  height:52px;padding:0 16px;position:relative;scroll-snap-align:start;
  font-size:15px;color:var(--text-600);white-space:nowrap;
  transition:color .2s var(--ease);
}
.tab::after{
  content:"";position:absolute;left:16px;right:16px;bottom:0;height:2px;
  background:var(--brick-600);transform:scaleX(0);transform-origin:left;
  transition:transform .24s var(--ease);
}
.tab:hover{color:var(--ink-800)}
.tab.is-active{color:var(--ink-800);font-weight:600}
.tab.is-active::after{transform:scaleX(1)}
.tabs-fade{
  position:absolute;right:0;top:0;bottom:0;width:56px;pointer-events:none;
  background:linear-gradient(90deg,rgba(255,255,255,0),var(--panel) 72%);
}

/* ---------- breadcrumb ---------- */
.crumb{padding:20px 0 0;font-size:13px;color:var(--text-400)}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.crumb li{display:inline-flex;align-items:center;gap:8px}
.crumb li+li::before{content:"/";color:var(--line);font-size:12px}
.crumb a{color:var(--text-600)}
.crumb a:hover{color:var(--brick-600)}
.crumb .current{color:var(--text-400)}

/* ---------- hero ---------- */
.hero{
  position:relative;overflow:hidden;
  padding:56px 0 64px;
  border-bottom:1px solid var(--line);
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    repeating-linear-gradient(0deg,rgba(18,48,46,.055) 0 1px,transparent 1px 34px),
    repeating-linear-gradient(90deg,rgba(18,48,46,.055) 0 1px,transparent 1px 34px);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),rgba(0,0,0,0) 88%);
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),rgba(0,0,0,0) 88%);
}
.hero__inner{position:relative;max-width:900px}
.eyebrow{
  display:inline-block;margin-bottom:20px;
  padding:5px 13px;border-radius:999px;
  border:1px solid rgba(180,145,92,.55);background:var(--panel);
  font-size:12px;letter-spacing:.12em;color:var(--sand-500);
}
.hero__title{
  font-size:clamp(30px,4.2vw,50px);
  line-height:1.18;color:var(--ink-900);
  letter-spacing:-.015em;
}
.hero__lead{
  margin-top:16px;max-width:640px;
  font-size:16px;line-height:1.75;color:var(--text-600);
}
.hero__search{margin-top:30px;max-width:620px}
.search--lg{width:100%;max-width:620px}
.search--lg .search__input{height:52px;font-size:15px;padding-left:42px;padding-right:112px;background:var(--panel)}
.search--lg .search__icon{left:14px;width:18px;height:18px}
.search--lg .search__clear{right:96px}
.search__submit{
  position:absolute;right:5px;top:5px;height:42px;padding:0 18px;
  border-radius:3px;border:1px solid var(--ink-800);
  background:var(--ink-800);color:#fff;font-size:14px;font-weight:500;
  transition:background .22s var(--ease),border-color .22s var(--ease);
}
.search__submit:hover{background:var(--brick-600);border-color:var(--brick-600)}

.facts{
  display:flex;flex-wrap:wrap;gap:20px 56px;
  margin-top:36px;padding-top:24px;border-top:1px solid var(--line);
}
.fact__num{
  font-family:var(--num);font-size:26px;font-weight:600;color:var(--ink-800);
  font-variant-numeric:tabular-nums;line-height:1.2;
}
.fact__num span{font-size:14px;color:var(--text-400);margin-left:4px;font-weight:500}
.fact__label{font-size:13px;color:var(--text-600);margin-top:2px}

/* ---------- section shell ---------- */
.section{padding:72px 0}
.section--tight{padding:56px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px}
.section-head h2{font-size:clamp(24px,2.6vw,32px)}
.section-head p{margin-top:8px;font-size:15px;color:var(--text-600);max-width:620px}
.hairline{height:1px;background:var(--line);border:0;margin:0}

/* ---------- faq layout ---------- */
.faq-layout{padding:0}
.side-sticky{position:sticky;top:84px}
.side-card{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow-1);
}
.side-card__eyebrow{
  font-size:12px;letter-spacing:.12em;color:var(--sand-500);margin-bottom:14px;
}
.anchor-list{margin:0}
.anchor-list li+li{border-top:1px solid var(--line)}
.anchor-list a{
  display:flex;align-items:baseline;gap:12px;
  padding:13px 0 13px 12px;font-size:15px;color:var(--text-600);
  border-left:2px solid transparent;
  transition:color .2s var(--ease),border-color .2s var(--ease),padding-left .2s var(--ease);
}
.anchor-list a:hover{color:var(--brick-600)}
.anchor-list a.is-active{color:var(--ink-900);font-weight:600;border-left-color:var(--brick-600);padding-left:14px}
.anchor-list .num{
  font-family:var(--num);font-size:12px;color:var(--sand-500);
  font-variant-numeric:tabular-nums;flex:0 0 20px;
}
.side-note{margin-top:18px;font-size:13px;color:var(--text-400);line-height:1.7}
.side-mini{
  margin-top:20px;padding:20px;border-radius:var(--radius-card);
  background:var(--ink-800);color:rgba(255,255,255,.78);
}
.side-mini h3{color:#fff;font-size:17px;margin-bottom:8px}
.side-mini p{font-size:13px;line-height:1.7;margin-bottom:14px}

/* ---------- accordion ---------- */
.faq-group{margin-bottom:56px;scroll-margin-top:88px}
.faq-group:last-child{margin-bottom:0}
.faq-group__head{display:flex;align-items:baseline;gap:14px;margin-bottom:16px}
.faq-group__num{
  font-family:var(--num);font-size:34px;font-weight:600;line-height:1;
  color:rgba(180,145,92,.55);font-variant-numeric:tabular-nums;
}
.faq-group__title{font-size:clamp(20px,2vw,26px)}
.faq-group__desc{font-size:14px;color:var(--text-600);margin:6px 0 20px 48px;max-width:640px}

.acc{border-top:1px solid var(--line)}
.acc__item{border-bottom:1px solid var(--line)}
.acc__btn{
  display:flex;width:100%;align-items:flex-start;gap:14px;
  padding:20px 4px 20px 0;background:none;border:none;text-align:left;
  font-size:17px;font-weight:500;line-height:1.55;color:var(--text-900);
  transition:color .2s var(--ease);
}
.acc__btn:hover{color:var(--brick-600)}
.acc__idx{
  font-family:var(--num);font-size:13px;color:var(--text-400);
  font-variant-numeric:tabular-nums;padding-top:4px;flex:0 0 24px;
}
.acc__title{flex:1 1 auto}
.acc__icon{position:relative;width:16px;height:16px;flex:0 0 16px;margin-top:5px}
.acc__icon::before{
  content:"";position:absolute;left:0;top:7px;width:16px;height:2px;
  background:var(--brick-600);transition:transform .24s var(--ease);
}
.acc__icon::after{
  content:"";position:absolute;left:7px;top:0;width:2px;height:16px;
  background:var(--brick-600);transition:transform .24s var(--ease),opacity .24s var(--ease);
}
.acc__item.is-open .acc__icon::after{transform:rotate(90deg);opacity:0}
.acc__item.is-open .acc__btn{color:var(--ink-900)}
.acc__panel{max-height:0;overflow:hidden;transition:max-height .3s var(--ease)}
.acc__panel-inner{
  margin:0 0 22px 38px;padding:2px 0 2px 18px;
  border-left:3px solid var(--brick-600);
}
.acc__panel p{font-size:16px;line-height:1.82;color:var(--text-600)}
.acc__note{margin-top:10px;font-size:13px;color:var(--text-400);line-height:1.7}
.faq-empty{
  display:none;padding:36px 24px;text-align:center;border:1px dashed var(--line);
  border-radius:var(--radius-card);background:var(--panel-alt);
}
.faq-empty p{font-size:14px;color:var(--text-600)}

/* ---------- checklist ---------- */
.checklist{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:48px;align-items:center}
.checklist__media{position:relative;border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--line)}
.checklist__media img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .5s var(--ease)}
.checklist__media:hover img{transform:scale(1.04)}
.checklist__tag{
  position:absolute;left:16px;bottom:16px;
  padding:5px 12px;border-radius:999px;background:rgba(255,255,255,.94);
  border:1px solid rgba(180,145,92,.6);
  font-size:12px;color:var(--ink-800);
}
.steps{margin-top:24px}
.steps li{
  display:flex;gap:18px;padding:18px 0;border-top:1px solid var(--line);
}
.steps li:last-child{border-bottom:1px solid var(--line)}
.steps .num{
  font-family:var(--serif);font-size:26px;font-weight:600;line-height:1.1;
  color:var(--sand-500);flex:0 0 46px;font-variant-numeric:tabular-nums;
}
.steps h3{font-size:17px;margin-bottom:4px}
.steps p{font-size:14px;color:var(--text-600);line-height:1.7}

/* ---------- contact / form ---------- */
.contact-panel{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:48px;padding:40px;border-radius:var(--radius-card);
  background:var(--panel);border:1px solid var(--line);box-shadow:var(--shadow-1);
}
.contact-panel h2{font-size:clamp(22px,2.4vw,28px);margin-bottom:12px}
.contact-panel p.lead{font-size:15px;color:var(--text-600);line-height:1.8;max-width:420px}
.contact-meta{margin-top:24px;font-size:14px;color:var(--text-600);line-height:2}
.contact-meta strong{color:var(--ink-900);font-weight:600;margin-right:8px}

.field{margin-bottom:16px}
.field label{display:block;font-size:13px;color:var(--text-600);margin-bottom:6px}
.field input,.field textarea{
  width:100%;margin:0;border:1px solid var(--line);border-radius:var(--radius-btn);
  background:var(--panel);color:var(--text-900);font-size:15px;
  padding:0 14px;height:48px;box-shadow:none;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field textarea{height:104px;padding:12px 14px;line-height:1.7;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:var(--text-400)}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--ink-800);
  box-shadow:0 0 0 2px rgba(199,91,57,.25);
}
.form-hint{font-size:12px;color:var(--text-400);margin-top:10px;line-height:1.7}

/* ---------- cta bar ---------- */
.cta-bar{
  position:relative;overflow:hidden;
  background:var(--ink-900);color:#fff;padding:56px 0;
}
.cta-bar::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(115deg,rgba(255,255,255,.055) 0 1px,transparent 1px 40px);
  -webkit-mask-image:linear-gradient(90deg,rgba(0,0,0,.9),rgba(0,0,0,0) 70%);
  mask-image:linear-gradient(90deg,rgba(0,0,0,.9),rgba(0,0,0,0) 70%);
}
.cta-bar__inner{
  position:relative;display:flex;align-items:center;justify-content:space-between;
  gap:32px;flex-wrap:wrap;
}
.cta-bar h2{color:#fff;font-size:clamp(22px,2.6vw,30px)}
.cta-bar p{margin-top:8px;font-size:15px;color:rgba(255,255,255,.68);max-width:560px}
.cta-bar__actions{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.72);padding:64px 0 0}
.footer-grid{
  display:grid;grid-template-columns:minmax(0,2fr) minmax(0,1fr) minmax(0,1fr) minmax(0,1.3fr);
  gap:40px;padding-bottom:48px;
}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;margin-bottom:14px}
.footer-brand .brand__mark{color:var(--sand-500);width:28px;height:28px;flex:0 0 28px}
.footer-brand span{font-family:var(--serif);font-size:18px;font-weight:600;letter-spacing:.02em}
.footer-about{font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);max-width:340px}
.footer-col h4{
  font-family:var(--sans);font-size:13px;font-weight:600;letter-spacing:.08em;
  color:var(--sand-500);margin-bottom:16px;
}
.footer-col ul li{margin-bottom:10px;font-size:14px}
.footer-col a{color:rgba(255,255,255,.72);border-bottom:1px solid transparent;transition:color .2s var(--ease),border-color .2s var(--ease)}
.footer-col a:hover{color:var(--paper-50);border-bottom-color:rgba(247,244,238,.6)}
.footer-contact li{font-size:14px;color:rgba(255,255,255,.62);line-height:1.8}
.footer-contact strong{color:rgba(255,255,255,.88);font-weight:500}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:20px 0 24px;border-top:1px solid var(--line-dark);
  font-size:13px;color:rgba(255,255,255,.45);
}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .wrap{padding:0 24px}
}
@media (max-width:1023px){
  .section{padding:64px 0}
  .hero{padding:48px 0 56px}
  .faq-layout .side-sticky{position:static;margin-bottom:32px}
  .side-card{padding:20px}
  .checklist{grid-template-columns:1fr;gap:32px}
  .checklist__media{order:-1}
  .contact-panel{grid-template-columns:1fr;gap:32px;padding:32px}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}
  .footer-about{max-width:none}
}
@media (max-width:900px){
  .search{display:none}
  .topbar__tools{gap:8px}
}
@media (max-width:767px){
  .section{padding:56px 0}
  .hero__search .search--lg .search__input{padding-right:100px}
  .facts{gap:18px 32px}
  .fact__num{font-size:22px}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px}
  .faq-group__desc{margin-left:0}
  .acc__panel-inner{margin-left:0;padding-left:16px}
  .acc__btn{font-size:16px}
}
@media (max-width:639px){
  .wrap{padding:0 20px}
  .topbar__inner{height:60px;gap:12px}
  .brand__mark{width:28px;height:28px;flex:0 0 28px}
  .brand__text{font-size:17px}
  .topbar__tools .btn--ghost{display:none}
  .btn--sm{height:36px;padding:0 14px;font-size:13px}
  .hero{padding:36px 0 44px}
  .hero__title{font-size:30px}
  .hero__lead{font-size:15px}
  .search--lg .search__input{height:50px;font-size:14px;padding-left:38px;padding-right:88px}
  .search__submit{height:40px;padding:0 14px;font-size:13px}
  .search--lg .search__clear{right:82px}
  .section{padding:48px 0}
  .cta-bar{padding:44px 0}
  .cta-bar__actions{width:100%}
  .cta-bar__actions .btn{width:100%}
  .contact-panel{padding:24px}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:36px}
  .site-footer{padding-top:52px}
  .footer-bottom{flex-direction:column;gap:8px}
  .steps li{gap:14px}
  .steps .num{font-size:22px;flex:0 0 38px}
  .faq-group__num{font-size:26px}
}

/* roulang page: category4 */
:root{
  --ink-900:#0B1F1E;
  --ink-800:#12302E;
  --brick-600:#C75B39;
  --sand-500:#B4915C;
  --paper-50:#F7F4EE;
  --panel:#FFFFFF;
  --panel-alt:#EFEAE1;
  --text-900:#16211F;
  --text-600:#586661;
  --text-400:#8A9691;
  --line:#E3DDD1;
  --line-dark:rgba(255,255,255,.14);
  --radius-card:6px;
  --radius-img:4px;
  --radius-btn:4px;
  --shadow-1:0 1px 2px rgba(11,31,30,.06);
  --shadow-2:0 10px 28px -12px rgba(11,31,30,.18);
  --ease:cubic-bezier(.22,.61,.36,1);
  --wrap:1240px;
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC","STSong",serif;
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,sans-serif;
  --font-num:"Inter","Space Grotesk","Helvetica Neue",Arial,sans-serif;
}

/* ============ reset / base ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background-color:var(--paper-50);
  color:var(--text-900);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
body,h1,h2,h3,h4,h5,h6,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
h1,h2,h3,h4{font-family:var(--font-serif);font-weight:600;letter-spacing:-.01em;line-height:1.22;color:var(--ink-800);}
h1{font-size:46px;font-weight:700;}
h2{font-size:32px;}
h3{font-size:21px;}
h4{font-size:17px;font-family:var(--font-sans);font-weight:600;}
p{color:var(--text-600);}
a{color:var(--ink-800);text-decoration:none;transition:color .22s var(--ease);}
a:hover{color:var(--brick-600);}
img{max-width:100%;display:block;border-radius:var(--radius-img);}
button{font-family:inherit;cursor:pointer;}
strong{font-weight:600;color:var(--text-900);}
:focus-visible{outline:2px solid var(--brick-600);outline-offset:2px;border-radius:2px;}

/* foundation 覆盖 */
body,html{background-color:var(--paper-50);}
.grid-x{margin-left:-12px;margin-right:-12px;}
.grid-x>.cell{padding-left:12px;padding-right:12px;}
.tabs{margin:0;border:0;background:transparent;}
.tabs::before,.tabs::after{display:none;}

/* ============ 容器 ============ */
.wrap{
  width:100%;
  max-width:var(--wrap);
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 22px;
  border-radius:var(--radius-btn);
  border:1px solid transparent;
  font-size:15px;
  font-weight:500;
  line-height:1;
  white-space:nowrap;
  transition:background-color .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
}
.btn--primary{background-color:var(--ink-800);color:#fff;box-shadow:var(--shadow-1);}
.btn--primary:hover,.btn--primary:focus{background-color:var(--brick-600);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn--ghost{background-color:transparent;border-color:var(--ink-800);color:var(--ink-800);}
.btn--ghost:hover,.btn--ghost:focus{background-color:rgba(18,48,46,.06);color:var(--ink-800);transform:translateY(-1px);}
.btn--light{background-color:#fff;color:var(--ink-900);}
.btn--light:hover,.btn--light:focus{background-color:var(--brick-600);color:#fff;}
.btn--sm{height:38px;padding:0 16px;font-size:13.5px;}
.btn--block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.4;pointer-events:none;}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14.5px;font-weight:500;color:var(--ink-800);
  border-bottom:1px solid transparent;padding-bottom:2px;
}
.link-arrow svg{transition:transform .22s var(--ease);}
.link-arrow:hover{color:var(--brick-600);border-bottom-color:var(--brick-600);}
.link-arrow:hover svg{transform:translateX(3px);}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 12px;border-radius:999px;
  border:1px solid var(--sand-500);
  background-color:var(--paper-50);
  color:var(--ink-800);
  font-size:13px;line-height:1.6;
}
.badge--solid{background-color:rgba(199,91,57,.08);border-color:var(--brick-600);color:var(--brick-600);}
.eyebrow{
  display:inline-block;
  font-family:var(--font-num);
  font-size:12px;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--sand-500);
  font-weight:600;
}
.eyebrow--brick{color:var(--brick-600);}

/* ============ 头部导航 ============ */
.site-header{position:sticky;top:0;z-index:60;background-color:var(--paper-50);}
.topbar{border-bottom:1px solid var(--line);background-color:rgba(247,244,238,.94);backdrop-filter:saturate(140%) blur(6px);}
.topbar__inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:72px;}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink-800);}
.brand:hover{color:var(--ink-800);}
.brand__mark{width:30px;height:30px;color:var(--brick-600);flex:0 0 auto;}
.brand__text{font-family:var(--font-serif);font-size:19px;font-weight:700;letter-spacing:.01em;white-space:nowrap;}
.brand__text em{font-style:normal;color:var(--brick-600);margin-left:2px;}
.topbar__tools{display:flex;align-items:center;gap:12px;}
.search{
  position:relative;display:flex;align-items:center;
  width:240px;height:38px;
  background-color:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius-btn);
  transition:width .24s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.search:focus-within{width:320px;border-color:var(--ink-800);box-shadow:0 0 0 2px rgba(199,91,57,.25);}
.search__icon{width:16px;height:16px;margin-left:12px;color:var(--text-400);flex:0 0 auto;}
.search__input{
  flex:1 1 auto;min-width:0;height:100%;
  border:0;background:transparent;outline:none;
  padding:0 8px;font-size:14px;color:var(--text-900);
  font-family:var(--font-sans);
}
.search__input::placeholder{color:var(--text-400);}
.search__clear{
  display:none;width:24px;height:24px;margin-right:6px;
  border:0;background:transparent;color:var(--text-400);
  font-size:17px;line-height:1;border-radius:999px;
}
.search__clear:hover{color:var(--brick-600);}
.search.has-value .search__clear{display:block;}

.channelbar{background-color:var(--paper-50);border-bottom:1px solid var(--line);}
.channelbar__inner{position:relative;display:flex;align-items:center;height:52px;overflow:hidden;}
.channelbar .tabs{
  display:flex;align-items:center;gap:6px;
  width:100%;overflow-x:auto;scroll-snap-type:x proximity;
  scrollbar-width:none;-ms-overflow-style:none;
}
.channelbar .tabs::-webkit-scrollbar{display:none;}
.channelbar .tabs a{
  position:relative;flex:0 0 auto;scroll-snap-align:start;
  display:inline-block;padding:14px 14px 13px;
  font-size:14.5px;color:var(--text-600);
  border-bottom:2px solid transparent;
  transition:color .2s var(--ease),border-color .2s var(--ease),background-color .2s var(--ease);
  border-radius:4px 4px 0 0;
}
.channelbar .tabs a:hover{color:var(--ink-800);background-color:rgba(18,48,46,.05);}
.channelbar .tabs a.is-active{color:var(--ink-800);font-weight:600;border-bottom-color:var(--brick-600);}
.tabs-fade{
  position:absolute;right:0;top:0;bottom:0;width:56px;pointer-events:none;
  background:linear-gradient(90deg,rgba(247,244,238,0),var(--paper-50) 72%);
}

/* ============ Hero ============ */
.hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(18,48,46,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(18,48,46,.06) 1px,transparent 1px);
  background-size:64px 64px;
  opacity:.55;
  mask-image:radial-gradient(120% 90% at 20% 0%,#000 10%,transparent 70%);
  -webkit-mask-image:radial-gradient(120% 90% at 20% 0%,#000 10%,transparent 70%);
}
.hero__inner{position:relative;padding:64px 0 72px;}
.hero__grid{display:grid;grid-template-columns:minmax(0,1.02fr) minmax(0,1fr);gap:56px;align-items:center;}
.hero__media{position:relative;}
.hero__media img{
  width:100%;aspect-ratio:5/4;object-fit:cover;
  border-radius:var(--radius-img);
  border:1px solid var(--line);
  box-shadow:var(--shadow-1);
}
.hero__media-note{
  position:absolute;left:20px;bottom:20px;max-width:270px;
  background-color:var(--panel);
  border:1px solid var(--sand-500);
  border-radius:var(--radius-card);
  padding:14px 16px;
  box-shadow:var(--shadow-2);
}
.hero__media-note span{display:block;font-size:12px;letter-spacing:.08em;color:var(--sand-500);font-family:var(--font-num);text-transform:uppercase;}
.hero__media-note strong{display:block;margin-top:4px;font-size:15px;color:var(--ink-800);font-weight:600;}
.hero__media-note p{margin-top:4px;font-size:13px;line-height:1.6;color:var(--text-600);}
.hero h1{margin:16px 0 0;font-size:46px;}
.hero__sub{margin-top:16px;font-size:16.5px;line-height:1.8;color:var(--text-600);max-width:34em;}
.hero__actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.hero__facts{display:flex;flex-wrap:wrap;gap:0;margin-top:36px;border-top:1px solid var(--line);padding-top:20px;}
.fact{flex:1 1 0;min-width:130px;padding-right:18px;}
.fact + .fact{border-left:1px solid var(--line);padding-left:18px;}
.fact b{display:block;font-family:var(--font-num);font-size:22px;font-weight:600;color:var(--ink-800);font-variant-numeric:tabular-nums;letter-spacing:-.01em;}
.fact span{display:block;margin-top:2px;font-size:13px;color:var(--text-400);}

/* ============ 板块通用 ============ */
.section{padding:96px 0;}
.section--tight{padding:72px 0;}
.section--alt{background-color:var(--panel-alt);}
.section--dark{background-color:var(--ink-900);}
.section--dark h2,.section--dark h3{color:#fff;}
.section--dark p{color:rgba(255,255,255,.72);}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head h2{margin-top:12px;}
.section-head p{margin-top:14px;font-size:16px;}
.section-head--row{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;max-width:none;}

/* 编号索引 */
.index-list{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;border-top:1px solid var(--line);}
.index-list li{
  position:relative;padding:26px 26px 26px 0;
  border-right:1px solid var(--line);
}
.index-list li:last-child{border-right:0;}
.index-list li:not(:first-child){padding-left:26px;}
.index-list .num{
  display:block;font-family:var(--font-num);font-size:13px;font-weight:600;
  color:var(--brick-600);font-variant-numeric:tabular-nums;letter-spacing:.06em;
}
.index-list h3{margin-top:10px;font-size:18px;}
.index-list p{margin-top:8px;font-size:14px;line-height:1.7;}

/* 案例块 */
.case{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.08fr);gap:52px;align-items:center;}
.case + .case{margin-top:80px;}
.case--reverse .case__media{order:2;}
.case__media{position:relative;}
.case__media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:var(--radius-img);border:1px solid var(--line);
  transition:transform .26s var(--ease);
}
.case__media:hover img{transform:scale(1.02);}
.case__tag{
  position:absolute;left:16px;bottom:16px;
  background-color:var(--panel);border:1px solid var(--sand-500);
  border-radius:999px;padding:4px 14px;font-size:13px;color:var(--ink-800);
}
.case__body h3{margin-top:14px;font-size:26px;}
.case__body > p{margin-top:14px;font-size:16px;line-height:1.8;}
.points{margin-top:22px;border-top:1px solid var(--line);}
.points li{
  display:flex;gap:14px;align-items:flex-start;
  padding:14px 0;border-bottom:1px solid var(--line);
  font-size:15px;color:var(--text-900);
}
.points li span.dot{
  flex:0 0 auto;width:6px;height:6px;margin-top:11px;border-radius:999px;background-color:var(--brick-600);
}
.case__quote{
  margin-top:24px;padding:16px 18px;
  border-left:3px solid var(--brick-600);
  background-color:var(--panel);
  border-radius:0 var(--radius-card) var(--radius-card) 0;
  font-size:15px;line-height:1.8;color:var(--text-600);
  font-family:var(--font-serif);
}

/* 表格 */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius-card);background-color:var(--panel);box-shadow:var(--shadow-1);}
table.data-table{width:100%;min-width:760px;border-collapse:collapse;font-size:14.5px;}
table.data-table caption{
  caption-side:top;text-align:left;padding:18px 22px 4px;
  font-size:15px;color:var(--text-600);
}
table.data-table th,table.data-table td{
  padding:14px 18px;text-align:left;vertical-align:top;
  border-bottom:1px solid var(--line);
}
table.data-table thead th{
  background-color:var(--ink-800);color:#fff;
  font-weight:600;font-size:14px;letter-spacing:.01em;white-space:nowrap;
  border-bottom:0;
}
table.data-table tbody tr:nth-child(even){background-color:var(--panel-alt);}
table.data-table tbody tr:last-child td{border-bottom:0;}
table.data-table td:first-child{font-weight:600;color:var(--ink-800);white-space:nowrap;}
.table-note{margin-top:14px;font-size:13.5px;color:var(--text-400);}

/* 清单 */
.check-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px 24px;margin-top:8px;}
.check-item{
  display:flex;gap:14px;align-items:flex-start;
  background-color:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:18px 20px;
  transition:box-shadow .22s var(--ease),transform .22s var(--ease),border-color .22s var(--ease);
}
.check-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--sand-500);}
.check-item .mk{
  flex:0 0 auto;width:22px;height:22px;border-radius:999px;
  border:1px solid var(--sand-500);color:var(--brick-600);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-num);font-size:12px;font-weight:600;
}
.check-item b{display:block;font-size:15px;color:var(--ink-800);font-weight:600;}
.check-item p{margin-top:4px;font-size:13.5px;line-height:1.7;}

/* FAQ */
.faq{border-top:1px solid var(--line);}
.faq__item{border-bottom:1px solid var(--line);}
.faq__btn{
  display:flex;align-items:center;gap:18px;
  width:100%;padding:22px 4px;
  background:transparent;border:0;text-align:left;
  color:var(--ink-800);
}
.faq__num{font-family:var(--font-num);font-size:14px;font-weight:600;color:var(--sand-500);font-variant-numeric:tabular-nums;}
.faq__q{flex:1 1 auto;font-size:17px;font-weight:600;line-height:1.55;font-family:var(--font-serif);transition:color .2s var(--ease);}
.faq__btn:hover .faq__q{color:var(--brick-600);}
.faq__sign{
  flex:0 0 auto;position:relative;width:18px;height:18px;
  transition:transform .24s var(--ease);
}
.faq__sign::before,.faq__sign::after{
  content:"";position:absolute;background-color:var(--brick-600);border-radius:2px;
}
.faq__sign::before{left:0;top:8px;width:18px;height:2px;}
.faq__sign::after{left:8px;top:0;width:2px;height:18px;}
.faq__item.is-open .faq__sign{transform:rotate(45deg);}
.faq__panel{padding:0 4px 24px 36px;display:none;}
.faq__item.is-open .faq__panel{display:block;}
.faq__panel p{font-size:15.5px;line-height:1.85;border-left:3px solid var(--brick-600);padding-left:16px;}

/* CTA 条 */
.cta-band{background-color:var(--ink-900);position:relative;overflow:hidden;}
.cta-band::after{
  content:"";position:absolute;right:-80px;top:-80px;width:420px;height:420px;
  border:1px solid rgba(255,255,255,.14);border-radius:50%;
  opacity:.5;pointer-events:none;
}
.cta-band__inner{
  position:relative;z-index:1;
  display:flex;align-items:center;justify-content:space-between;gap:40px;
  padding:64px 0;
}
.cta-band h2{color:#fff;font-size:30px;max-width:22em;}
.cta-band p{margin-top:12px;color:rgba(255,255,255,.72);font-size:15.5px;max-width:34em;}
.cta-band__actions{display:flex;flex-wrap:wrap;gap:12px;flex:0 0 auto;}

/* ============ 页脚 ============ */
.site-footer{background-color:var(--ink-900);color:rgba(255,255,255,.72);padding:72px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:44px;}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;}
.footer-brand .brand__mark{color:var(--sand-500);}
.footer-brand span{font-family:var(--font-serif);font-size:18px;font-weight:600;}
.footer-about{margin-top:16px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);max-width:30em;}
.footer-col h4{font-size:13px;color:var(--sand-500);font-weight:600;letter-spacing:.04em;margin-bottom:16px;}
.footer-col ul li{margin-bottom:10px;font-size:14px;}
.footer-col a{color:rgba(255,255,255,.72);border-bottom:1px solid transparent;padding-bottom:1px;}
.footer-col a:hover{color:var(--paper-50);border-bottom-color:var(--paper-50);}
.footer-contact li{font-size:13.5px;color:rgba(255,255,255,.66);line-height:1.8;}
.footer-contact strong{color:rgba(255,255,255,.9);font-weight:500;margin-right:2px;}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  margin-top:48px;padding-top:22px;
  border-top:1px solid var(--line-dark);
  font-size:13px;color:rgba(255,255,255,.5);
}

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

/* ============ 响应式 ============ */
@media (max-width:1200px){
  .hero__grid{gap:40px;}
  h1,.hero h1{font-size:42px;}
}
@media (max-width:1024px){
  .section{padding:76px 0;}
  .section--tight{padding:60px 0;}
  .hero__inner{padding:48px 0 56px;}
  .hero__grid{grid-template-columns:1fr;gap:36px;}
  .hero__media img{aspect-ratio:16/9;}
  .index-list{grid-template-columns:repeat(2,minmax(0,1fr));}
  .index-list li{border-bottom:1px solid var(--line);}
  .index-list li:nth-child(2n){border-right:0;}
  .index-list li:nth-child(n+3){border-bottom:0;}
  .index-list li:not(:first-child){padding-left:0;}
  .index-list li:nth-child(2n){padding-left:26px;}
  .case{grid-template-columns:1fr;gap:32px;}
  .case--reverse .case__media{order:0;}
  .case + .case{margin-top:64px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .cta-band__inner{flex-direction:column;align-items:flex-start;gap:28px;}
}
@media (max-width:768px){
  .wrap{padding-left:20px;padding-right:20px;}
  .topbar__inner{height:auto;flex-wrap:wrap;padding:12px 0;gap:12px;}
  .topbar__tools{width:100%;flex-wrap:wrap;gap:10px;}
  .search{width:100%;}
  .search:focus-within{width:100%;}
  .search__clear{display:block;}
  .channelbar__inner{height:48px;}
  h1,.hero h1{font-size:32px;}
  h2{font-size:25px;}
  .hero__sub{font-size:15.5px;}
  .hero__actions .btn{flex:1 1 100%;}
  .hero__facts{flex-direction:column;gap:14px;padding-top:18px;}
  .fact,.fact + .fact{border-left:0;padding-left:0;padding-right:0;border-top:1px solid var(--line);padding-top:14px;}
  .fact:first-child{border-top:0;padding-top:0;}
  .check-grid{grid-template-columns:1fr;}
  .section-head--row{flex-direction:column;align-items:flex-start;gap:14px;}
  .case__body h3{font-size:22px;}
  .faq__q{font-size:16px;}
  .footer-grid{grid-template-columns:1fr;}
  .cta-band__inner{padding:48px 0;}
  .cta-band__actions{width:100%;}
  .cta-band__actions .btn{flex:1 1 100%;}
}
@media (max-width:520px){
  .section{padding:56px 0;}
  .section--tight{padding:48px 0;}
  .hero__inner{padding:36px 0 44px;}
  .hero h1{font-size:29px;}
  .index-list{grid-template-columns:1fr;}
  .index-list li{border-right:0;border-bottom:1px solid var(--line);padding-left:0!important;}
  .index-list li:last-child{border-bottom:0;}
  .brand__text{font-size:17px;}
  .btn{height:44px;padding:0 18px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none!important;animation:none!important;scroll-behavior:auto!important;}
  .reveal{opacity:1;transform:none;}
}