/* roulang page: index */
:root{
  --ink:#14110F;
  --ink-soft:#6B6360;
  --ink-mute:#A8A29B;
  --copper:#C0562A;
  --copper-soft:rgba(192,86,42,.3);
  --pine:#2C4A3E;
  --sand:#F6F2EA;
  --card:#FFFCF6;
  --line:#E2DACD;
  --line-dark:rgba(246,242,234,.18);
  --r-sm:2px;
  --r-md:4px;
  --sh-card:0 1px 0 var(--line);
  --sh-hover:0 10px 28px rgba(20,17,15,.08);
  --sp-1:8px; --sp-2:12px; --sp-3:16px; --sp-4:24px; --sp-5:32px; --sp-6:48px; --sp-7:64px; --sp-8:96px;
  --font-head:"Noto Serif SC","Songti SC","Source Han Serif SC",serif;
  --font-body:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--sand);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0;}
ul,ol{list-style:none;}
img{max-width:100%;display:block;border:0;}
a{color:var(--ink);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--copper);}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--copper);outline-offset:2px;border-radius:var(--r-sm);}
.grid-container{max-width:1200px;padding-left:32px;padding-right:32px;margin:0 auto;}
@media screen and (max-width:1023px){ .grid-container{padding-left:24px;padding-right:24px;} }
@media screen and (max-width:639px){ .grid-container{padding-left:20px;padding-right:20px;} }

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  height:44px;padding:0 22px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;letter-spacing:.02em;
  border:1px solid transparent;cursor:pointer;
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.btn:active{transform:none;box-shadow:none;}
.btn-primary{background:var(--ink);color:var(--sand);}
.btn-primary:hover{background:var(--copper);color:#fff;transform:translateY(-1px);box-shadow:0 6px 16px rgba(20,17,15,.12);}
.btn-accent{background:var(--copper);color:#fff;}
.btn-accent:hover{background:var(--ink);color:var(--sand);transform:translateY(-1px);box-shadow:0 6px 16px rgba(20,17,15,.12);}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink);}
.btn-ghost:hover{background:var(--ink);color:var(--sand);transform:translateY(-1px);}
.btn-outline-light{background:transparent;color:var(--sand);border-color:rgba(246,242,234,.6);}
.btn-outline-light:hover{background:var(--sand);color:var(--ink);border-color:var(--sand);}
.btn-sm{height:36px;padding:0 16px;font-size:13px;}
.btn-block{width:100%;}

/* ---------- 顶部信息条 ---------- */
.site-head{position:sticky;top:0;z-index:120;}
.topbar{
  background:var(--pine);color:var(--sand);
  height:44px;display:flex;align-items:center;
  transition:height .2s ease;
}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%;height:100%;}
.topbar-label{font-size:13px;color:rgba(246,242,234,.86);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.topbar-label strong{color:var(--copper);font-weight:700;font-variant-numeric:tabular-nums;}
.countdown{display:flex;align-items:center;gap:6px;font-variant-numeric:tabular-nums;}
.cd-cell{display:flex;flex-direction:column;align-items:center;line-height:1;}
.cd-num{font-family:ui-monospace,"Barlow",monospace;font-size:16px;font-weight:700;color:var(--copper);}
.cd-tag{font-size:11px;color:rgba(246,242,234,.7);margin-top:3px;}
.cd-sep{color:rgba(246,242,234,.5);font-size:14px;transform:translateY(-3px);}
.topbar-cta{
  font-size:12px;color:var(--sand);border:1px solid rgba(246,242,234,.45);
  padding:5px 12px;border-radius:var(--r-sm);white-space:nowrap;transition:all .18s ease;
}
.topbar-cta:hover{background:var(--sand);color:var(--ink);border-color:var(--sand);}
body.is-scrolled .topbar{height:36px;}
body.is-scrolled .cd-num{font-size:14px;}

/* ---------- 导航 ---------- */
.nav{background:var(--sand);border-bottom:1px solid var(--line);transition:box-shadow .2s ease;}
body.is-scrolled .nav{box-shadow:0 8px 24px rgba(20,17,15,.06);}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:76px;gap:24px;}
.logo{display:flex;align-items:center;gap:10px;}
.logo-mark{
  width:28px;height:28px;background:var(--copper);color:var(--sand);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-head);font-weight:700;font-size:15px;border-radius:var(--r-sm);flex:none;
}
.logo-text{display:flex;flex-direction:column;line-height:1.2;}
.logo-line1{font-size:12px;letter-spacing:.12em;color:var(--ink-soft);}
.logo-line2{font-size:17px;font-weight:700;font-family:var(--font-head);letter-spacing:-.01em;}
.nav-links{display:flex;align-items:center;gap:28px;}
.nav-links a{
  position:relative;font-size:15px;letter-spacing:.02em;padding:6px 0;color:var(--ink);
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:100%;bottom:0;height:2px;background:var(--copper);
  transition:right .2s ease;
}
.nav-links a:hover::after,.nav-links a:focus-visible::after{right:0;}
.nav-links a.is-active{font-weight:700;}
.nav-links a.is-active::after{right:0;}
.nav-actions{display:flex;align-items:center;gap:16px;}
.nav-mini{font-size:12px;color:var(--copper);letter-spacing:.02em;}
.nav-mini:hover{color:var(--ink);}
.nav-toggle{
  display:none;width:44px;height:44px;background:transparent;border:1px solid var(--line);
  border-radius:var(--r-sm);cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);transition:transform .2s ease,opacity .2s ease;}
.nav-toggle:hover{border-color:var(--copper);}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

/* 抽屉 */
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);
  background:var(--card);border-left:1px solid var(--line);
  transform:translateX(100%);transition:transform .26s ease;
  z-index:200;padding:24px;display:flex;flex-direction:column;gap:8px;
  box-shadow:-12px 0 40px rgba(20,17,15,.12);
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line);margin-bottom:8px;}
.drawer-title{font-family:var(--font-head);font-weight:700;font-size:16px;}
.drawer-close{width:40px;height:40px;border:1px solid var(--line);background:transparent;border-radius:var(--r-sm);font-size:18px;line-height:1;cursor:pointer;color:var(--ink);}
.drawer-close:hover{border-color:var(--copper);color:var(--copper);}
.drawer a.drawer-link{
  padding:14px 4px;border-bottom:1px solid var(--line);font-size:15px;color:var(--ink);
  display:flex;justify-content:space-between;align-items:center;
}
.drawer a.drawer-link:hover{color:var(--copper);}
.drawer .btn{margin-top:20px;}
.drawer-mask{
  position:fixed;inset:0;background:rgba(20,17,15,.42);opacity:0;pointer-events:none;
  transition:opacity .26s ease;z-index:190;
}
.drawer-mask.is-open{opacity:1;pointer-events:auto;}

/* ---------- Hero ---------- */
.hero{
  position:relative;min-height:560px;display:flex;align-items:center;
  background:url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  color:var(--sand);overflow:hidden;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(20,17,15,.86) 0%,rgba(20,17,15,.62) 46%,rgba(20,17,15,.22) 100%);
}
.hero-inner{position:relative;z-index:2;width:100%;padding:88px 0 72px;}
.hero-copy{max-width:660px;}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.1em;
  color:rgba(246,242,234,.8);border:1px solid rgba(246,242,234,.35);
  padding:5px 12px;border-radius:var(--r-sm);margin-bottom:20px;
}
.hero-eyebrow i{width:6px;height:6px;background:var(--copper);display:block;border-radius:1px;}
.hero h1{
  font-family:var(--font-head);font-weight:700;letter-spacing:-.02em;
  font-size:clamp(30px,5vw,58px);line-height:1.22;color:var(--sand);
}
.hero h1 .kw{border-bottom:3px solid rgba(192,86,42,.85);padding-bottom:2px;}
.hero-sub{margin-top:16px;font-size:16px;line-height:1.85;color:rgba(246,242,234,.86);max-width:560px;}
.hero-actions{display:flex;gap:14px;margin-top:28px;flex-wrap:wrap;}
.hero-stats{display:flex;align-items:center;gap:0;margin-top:36px;flex-wrap:wrap;}
.hero-stat{padding:0 22px;border-left:1px solid rgba(246,242,234,.24);}
.hero-stat:first-child{padding-left:0;border-left:0;}
.hero-stat b{display:block;font-size:22px;font-family:var(--font-head);color:var(--sand);line-height:1.2;}
.hero-stat span{display:block;font-size:12px;color:rgba(246,242,234,.72);margin-top:4px;}
.hero-plate{
  position:absolute;right:32px;bottom:32px;width:132px;
  border:1px solid rgba(246,242,234,.4);border-radius:var(--r-sm);
  padding:10px 12px;font-size:12px;color:rgba(246,242,234,.82);z-index:2;
}
.hero-plate b{display:block;font-family:ui-monospace,monospace;color:var(--sand);font-size:13px;letter-spacing:.06em;}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0;}
.section-tight{padding:72px 0;}
.section-head{margin-bottom:32px;}
.section-tag{
  display:inline-block;font-size:12px;letter-spacing:.1em;color:var(--copper);
  border:1px solid var(--copper-soft);border-radius:var(--r-sm);padding:4px 10px;margin-bottom:16px;
}
h2.section-title{font-family:var(--font-head);font-weight:700;font-size:clamp(26px,3.4vw,34px);letter-spacing:-.02em;line-height:1.35;}
.section-desc{margin-top:12px;color:var(--ink-soft);font-size:15px;max-width:640px;}

/* ---------- 卖点（左5右7） ---------- */
.points-wrap{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:start;}
.points-sticky{position:sticky;top:150px;}
.points-list{display:grid;grid-template-columns:1fr 1fr;gap:0 32px;border-top:1px solid var(--line);}
.point-item{
  position:relative;padding:22px 0 22px 0;border-bottom:1px solid var(--line);
  transition:background .2s ease,padding-left .2s ease;
}
.point-item::before{
  content:"";position:absolute;left:0;top:22px;bottom:22px;width:3px;background:var(--copper);
  opacity:0;transition:opacity .2s ease;
}
.point-item:hover{background:var(--card);padding-left:14px;}
.point-item:hover::before{opacity:1;}
.point-num{font-family:ui-monospace,monospace;font-size:13px;color:var(--copper);letter-spacing:.08em;}
.point-name{font-family:var(--font-head);font-size:18px;font-weight:700;margin-top:6px;letter-spacing:-.01em;}
.point-text{margin-top:6px;font-size:14px;color:var(--ink-soft);line-height:1.8;}

/* ---------- 图墙 ---------- */
.gallery{display:grid;grid-template-columns:repeat(12,1fr);gap:20px;}
.g-item{position:relative;border-radius:var(--r-md);overflow:hidden;background:#e8e1d5;}
.g-item img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.g-item:hover img{transform:scale(1.02);}
.g-cap{
  position:absolute;left:0;right:0;bottom:0;padding:10px 14px;font-size:13px;color:#fff;
  background:rgba(20,17,15,.62);transition:transform .2s ease;
}
.g-item:hover .g-cap{transform:translateY(-4px);}
.g-a{grid-column:span 5;} .g-b{grid-column:span 7;}
.g-c{grid-column:span 4;} .g-d{grid-column:span 8;}
.g-a,.g-c{aspect-ratio:4/3;}
.g-b,.g-d{aspect-ratio:16/9;}

/* ---------- CTA 表单区 ---------- */
.cta-band{background:var(--pine);color:var(--sand);}
.cta-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start;}
.cta-band h2{font-family:var(--font-head);font-size:clamp(26px,3.2vw,32px);font-weight:700;letter-spacing:-.02em;color:var(--sand);line-height:1.36;}
.cta-band p.lead{margin-top:14px;color:rgba(246,242,234,.82);font-size:15px;max-width:460px;}
.cta-checks{margin-top:26px;display:flex;flex-direction:column;gap:12px;}
.cta-checks li{display:flex;align-items:flex-start;gap:12px;font-size:15px;color:rgba(246,242,234,.9);}
.cta-checks li i{flex:none;width:16px;height:16px;background:var(--copper);border-radius:1px;margin-top:5px;}
.form-card{background:var(--card);border-radius:var(--r-md);padding:32px;border:1px solid var(--line);box-shadow:var(--sh-card);color:var(--ink);}
.form-card h3{font-family:var(--font-head);font-size:19px;font-weight:700;margin-bottom:4px;}
.form-card .form-hint{font-size:13px;color:var(--ink-soft);margin-bottom:20px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:14px;margin-bottom:8px;color:var(--ink);font-weight:500;}
.field input[type="text"],.field input[type="tel"],.field select{
  width:100%;height:48px;padding:0 14px;border:1px solid var(--line);border-radius:var(--r-sm);
  background:#fff;font-size:15px;color:var(--ink);font-family:inherit;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.field input:focus,.field select:focus{
  outline:none;border-color:var(--copper);box-shadow:0 0 0 2px rgba(192,86,42,.16);
}
.field-row{display:flex;gap:10px;}
.field-row input{flex:1;}
.code-btn{
  flex:none;height:48px;padding:0 16px;background:transparent;border:1px solid var(--copper);
  color:var(--copper);border-radius:var(--r-sm);font-size:13px;cursor:pointer;transition:all .18s ease;
}
.code-btn:hover{background:var(--copper);color:#fff;}
.check-line{display:flex;align-items:flex-start;gap:10px;font-size:13px;color:var(--ink-soft);margin:6px 0 20px;}
.check-line input{margin-top:4px;width:16px;height:16px;accent-color:var(--copper);}
.form-tip{font-size:12px;color:var(--ink-mute);margin-top:12px;text-align:center;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px;margin:0 auto;}
.faq-list{border-top:1px solid var(--line);}
details.faq-item{border-bottom:1px solid var(--line);}
details.faq-item summary{
  list-style:none;cursor:pointer;padding:20px 44px 20px 18px;position:relative;
  font-size:17px;font-weight:700;font-family:var(--font-head);color:var(--ink);
  transition:background .2s ease;
}
details.faq-item summary::-webkit-details-marker{display:none;}
details.faq-item summary::after{
  content:"+";position:absolute;right:12px;top:50%;transform:translateY(-50%);
  width:24px;height:24px;border:1px solid var(--line);border-radius:var(--r-sm);
  display:flex;align-items:center;justify-content:center;font-size:16px;color:var(--ink-soft);
  font-family:var(--font-body);transition:all .2s ease;
}
details.faq-item[open] summary::after{content:"−";border-color:var(--copper);color:var(--copper);}
details.faq-item summary:hover{background:var(--card);}
details.faq-item[open] summary{border-left:3px solid var(--copper);padding-left:15px;}
.faq-answer{padding:0 44px 22px 18px;font-size:15px;line-height:1.85;color:var(--ink-soft);background:var(--card);}
details.faq-item[open] .faq-answer{border-left:3px solid var(--copper);padding-left:15px;}

/* ---------- CMS 列表 ---------- */
.list-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:32px;}
.list-more{font-size:14px;color:var(--copper);white-space:nowrap;}
.list-more:hover{color:var(--ink);}
.cms-grid{margin-top:0;}
.cms-cell{margin-bottom:32px;}
.cms-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;box-shadow:var(--sh-card);height:100%;display:flex;flex-direction:column;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.cms-card:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);border-color:var(--copper-soft);}
.cms-thumb{display:block;aspect-ratio:16/9;background:var(--sand);overflow:hidden;position:relative;}
.cms-thumb img{width:100%;height:100%;object-fit:cover;}
.cms-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1;}
.cms-badge{
  align-self:flex-start;font-size:12px;letter-spacing:.04em;color:var(--copper);
  border:1px solid var(--copper-soft);border-radius:var(--r-sm);padding:3px 10px;background:transparent;
}
.cms-title{
  margin-top:12px;font-family:var(--font-head);font-size:18px;font-weight:700;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.cms-title a{color:var(--ink);}
.cms-title a:hover{color:var(--copper);}
.cms-excerpt{
  margin-top:10px;font-size:14px;color:var(--ink-soft);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.cms-foot{
  margin-top:auto;padding-top:16px;display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--ink-mute);font-variant-numeric:tabular-nums;
}
.cms-arrow{display:inline-block;transition:transform .2s ease;color:var(--copper);font-size:15px;}
.cms-card:hover .cms-arrow{transform:translateX(4px);}
.empty-state{
  border:1px dashed var(--line);border-radius:var(--r-md);min-height:200px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  color:var(--ink-soft);font-size:15px;text-align:center;padding:32px;
}

/* ---------- 页脚 ---------- */
.foot{background:var(--ink);color:rgba(246,242,234,.82);padding:72px 0 0;}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;}
.foot h4{font-family:var(--font-head);font-size:15px;color:var(--sand);margin-bottom:16px;font-weight:700;letter-spacing:.02em;}
.foot-brand .fb-name{font-family:var(--font-head);font-size:17px;font-weight:700;color:var(--sand);line-height:1.4;}
.foot-brand p{margin-top:12px;font-size:13px;line-height:1.8;color:rgba(246,242,234,.62);max-width:280px;}
.foot-domain{margin-top:16px;font-size:13px;color:rgba(246,242,234,.5);letter-spacing:.04em;}
.foot-links{display:flex;flex-direction:column;gap:10px;}
.foot-links a{font-size:14px;color:rgba(246,242,234,.76);}
.foot-links a:hover{color:var(--copper);}
.foot-info{font-size:13px;line-height:2;color:rgba(246,242,234,.68);}
.foot-info b{color:var(--sand);font-weight:600;font-variant-numeric:tabular-nums;}
.foot-bottom{
  margin-top:56px;border-top:1px solid var(--line-dark);padding:22px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(246,242,234,.5);
}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .42s ease,transform .42s ease;}
.reveal.is-in{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1023px){
  .section{padding:72px 0;}
  .section-tight{padding:56px 0;}
  .nav-links{display:none;}
  .nav-toggle{display:flex;}
  .nav-inner{height:60px;}
  .nav-actions .nav-mini{display:none;}
  .points-wrap{grid-template-columns:1fr;gap:32px;}
  .points-sticky{position:static;}
  .cta-grid{grid-template-columns:1fr;gap:32px;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .hero{min-height:480px;}
  .hero-inner{padding:64px 0 56px;}
  .hero-plate{display:none;}
}
@media screen and (max-width:767px){
  .gallery{gap:14px;}
  .g-a,.g-b{grid-column:span 12;}
  .g-c,.g-d{grid-column:span 6;}
  .g-c,.g-d{aspect-ratio:4/3;}
  .g-d{display:none;}
  .points-list{grid-template-columns:1fr;}
  .form-card{padding:24px 20px;}
  .cms-cell{margin-bottom:24px;}
}
@media screen and (max-width:639px){
  .topbar{height:40px;}
  .topbar-label{display:none;}
  .topbar-inner{justify-content:space-between;}
  .cd-num{font-size:15px;}
  .hero{min-height:460px;}
  .hero::before{background:linear-gradient(180deg,rgba(20,17,15,.85) 0%,rgba(20,17,15,.7) 55%,rgba(20,17,15,.8) 100%);}
  .hero h1{font-size:30px;}
  .hero-sub{font-size:15px;}
  .hero-actions .btn{width:100%;}
  .hero-stat{padding:0 14px;}
  .hero-stat b{font-size:18px;}
  .faq-answer{padding-right:16px;}
  details.faq-item summary{padding-right:40px;font-size:16px;}
  .foot-grid{grid-template-columns:1fr;gap:28px;}
  .foot{padding-top:48px;}
  .list-head{flex-direction:column;align-items:flex-start;gap:8px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;}
  .reveal{opacity:1;transform:none;}
  .g-item:hover img,.cms-card:hover,.point-item:hover{transform:none;}
}

/* roulang page: article */
:root{
  --ink:#14110F;
  --copper:#C0562A;
  --copper-soft:rgba(192,86,42,.30);
  --pine:#2C4A3E;
  --sand:#F6F2EA;
  --card:#FFFCF6;
  --line:#E2DACD;
  --muted:#6B6360;
  --disabled:#A8A29B;
  --radius-s:2px;
  --radius-m:4px;
  --sp-1:8px; --sp-2:12px; --sp-3:16px; --sp-4:24px; --sp-5:32px; --sp-6:48px; --sp-7:64px; --sp-8:96px;
  --shadow-card:0 1px 0 #E2DACD;
  --shadow-hover:0 10px 28px rgba(20,17,15,.08);
  --font-title:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;
  --font-body:"Noto Sans SC","PingFang SC","Microsoft YaHei","Hiragino Sans GB",sans-serif;
  --font-num:"Barlow",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--sand);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.85;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--radius-m);}
a{color:var(--ink);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--copper);}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{
  outline:2px solid var(--copper);
  outline-offset:0;
  border-radius:var(--radius-s);
}
h1,h2,h3,h4{font-family:var(--font-title);font-weight:700;letter-spacing:-.02em;margin:0;color:var(--ink);}
p{margin:0 0 1em;}
ul,ol{margin:0 0 1em;padding-left:1.4em;}
button{font-family:inherit;cursor:pointer;}
.grid-container{max-width:1200px;padding-left:32px;padding-right:32px;}
@media screen and (max-width:1023px){.grid-container{padding-left:24px;padding-right:24px;}}
@media screen and (max-width:639px){.grid-container{padding-left:20px;padding-right:20px;}}

/* ============ 顶部公告条 ============ */
.topbar{background:var(--pine);color:var(--sand);font-size:13px;}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:44px;padding:8px 0;}
.topbar-label{color:rgba(246,242,234,.88);}
.topbar-label strong{color:var(--copper);font-family:var(--font-num);font-weight:600;letter-spacing:.02em;}
.topbar-ann{color:rgba(246,242,234,.72);font-size:12px;}
.topbar-ann strong{color:var(--copper);font-weight:600;}
.topbar-cta{
  display:inline-flex;align-items:center;justify-content:center;
  height:28px;padding:0 14px;border:1px solid rgba(246,242,234,.5);border-radius:var(--radius-s);
  color:var(--sand);font-size:12px;letter-spacing:.04em;white-space:nowrap;transition:all .18s ease;
}
.topbar-cta:hover,.topbar-cta:focus-visible{background:var(--sand);color:var(--ink);border-color:var(--sand);}
.topbar-cta:active{transform:none;background:var(--copper);border-color:var(--copper);color:#fff;}

/* ============ 导航 ============ */
.site-head{position:sticky;top:0;z-index:60;}
.nav{background:var(--sand);border-bottom:1px solid var(--line);transition:box-shadow .2s ease;}
.site-head.is-scrolled .nav{box-shadow:0 8px 24px rgba(20,17,15,.06);}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:76px;}
.logo{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.logo-mark{
  width:28px;height:28px;background:var(--copper);color:var(--sand);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-title);font-size:16px;font-weight:700;border-radius:var(--radius-s);
}
.logo-text{display:flex;flex-direction:column;line-height:1.2;}
.logo-line1{font-size:12px;letter-spacing:.16em;color:var(--muted);}
.logo-line2{font-family:var(--font-title);font-size:17px;font-weight:700;letter-spacing:-.01em;color:var(--ink);}
.nav-links{display:flex;align-items:center;gap:28px;list-style:none;margin:0;padding:0;}
.nav-links a{
  position:relative;display:inline-block;padding:6px 0;font-size:16px;letter-spacing:.02em;color:var(--ink);
}
.nav-links a::after{
  content:"";position:absolute;left:0;bottom:0;width:100%;height:2px;background:var(--copper);
  transform:scaleX(0);transform-origin:left;transition:transform .2s ease;
}
.nav-links a:hover::after,.nav-links a:focus-visible::after,.nav-links a.is-active::after{transform:scaleX(1);}
.nav-links a.is-active{font-weight:700;}
.nav-actions{display:flex;align-items:center;gap:16px;flex:0 0 auto;}
.nav-mini{font-size:12px;color:var(--copper);letter-spacing:.04em;border-bottom:1px solid transparent;padding-bottom:2px;}
.nav-mini:hover{border-bottom-color:var(--copper);}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  height:44px;padding:0 22px;border-radius:var(--radius-s);border:1px solid transparent;
  font-size:15px;font-weight:600;letter-spacing:.02em;line-height:1;
  transition:background-color .18s ease,color .18s ease,box-shadow .18s ease,transform .18s ease,border-color .18s ease;
}
.btn-primary{background:var(--ink);color:var(--sand);}
.btn-primary:hover,.btn-primary:focus-visible{background:var(--copper);color:#fff;transform:translateY(-1px);box-shadow:0 6px 16px rgba(20,17,15,.12);}
.btn-primary:active{transform:none;box-shadow:none;background:var(--ink);color:var(--sand);}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink);}
.btn-ghost:hover,.btn-ghost:focus-visible{background:var(--ink);color:var(--sand);transform:translateY(-1px);}
.btn-ghost:active{transform:none;background:var(--copper);border-color:var(--copper);color:#fff;}
.btn-sm{height:36px;padding:0 16px;font-size:13px;}
.link-arrow{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--copper);}
.link-arrow span.ar{transition:transform .18s ease;}
.link-arrow:hover span.ar{transform:translateX(4px);}

/* 移动抽屉 */
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);background:var(--card);
  border-radius:var(--radius-s);padding:0;align-items:center;justify-content:center;flex-direction:column;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);transition:background .18s ease;}
.nav-toggle:hover{border-color:var(--copper);}
.nav-toggle:hover span{background:var(--copper);}
.drawer-mask{
  position:fixed;inset:0;background:rgba(20,17,15,.45);opacity:0;visibility:hidden;
  transition:opacity .24s ease,visibility .24s ease;z-index:90;
}
.drawer{
  position:fixed;top:0;right:0;width:min(320px,86vw);height:100%;background:var(--sand);
  border-left:1px solid var(--line);z-index:100;transform:translateX(100%);
  transition:transform .28s ease;padding:20px;display:flex;flex-direction:column;gap:20px;
  overflow-y:auto;
}
body.drawer-open .drawer{transform:translateX(0);}
body.drawer-open .drawer-mask{opacity:1;visibility:visible;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;}
.drawer-title{font-family:var(--font-title);font-size:16px;font-weight:700;}
.drawer-close{
  width:36px;height:36px;border:1px solid var(--line);background:var(--card);border-radius:var(--radius-s);
  font-size:16px;line-height:1;color:var(--ink);
}
.drawer-close:hover{border-color:var(--copper);color:var(--copper);}
.drawer-links{display:flex;flex-direction:column;gap:2px;list-style:none;margin:0;padding:0;}
.drawer-links a{
  display:block;padding:12px 8px;border-bottom:1px solid var(--line);font-size:15px;color:var(--ink);
}
.drawer-links a:hover,.drawer-links a:focus-visible{color:var(--copper);background:var(--card);}
.drawer-cta{width:100%;margin-top:auto;}

/* ============ 页面主体 ============ */
.main{padding:32px 0 96px;}
.breadcrumb{font-size:13px;color:var(--muted);display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:24px;}
.breadcrumb a{color:var(--copper);}
.breadcrumb a:hover{text-decoration:underline;}
.breadcrumb .sep{color:var(--disabled);}
.breadcrumb .cur{color:var(--muted);}

.article-head{max-width:860px;}
.badge{
  display:inline-block;padding:4px 10px;border:1px solid var(--copper);border-radius:var(--radius-s);
  font-size:12px;letter-spacing:.04em;color:var(--copper);background:transparent;line-height:1.5;
}
.article-head h1{
  font-size:clamp(28px,4.4vw,44px);line-height:1.32;margin:16px 0 0;
}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:20px;
  font-size:13px;color:var(--muted);
}
.meta-row .divider{width:1px;height:12px;background:var(--line);display:inline-block;}
.meta-row time{font-family:var(--font-num);font-variant-numeric:tabular-nums;letter-spacing:.02em;}

.cover-wrap{margin:32px 0 0;border:1px solid var(--line);border-radius:var(--radius-m);overflow:hidden;background:var(--card);}
.cover-figure{position:relative;width:100%;aspect-ratio:16/9;overflow:hidden;margin:0;background:var(--card);}
.cover-figure img{width:100%;height:100%;object-fit:cover;border-radius:0;}
.cover-cap{font-size:13px;color:var(--muted);text-align:center;padding:12px 16px;border-top:1px solid var(--line);}

.article-layout{margin-top:40px;}
.article-body{
  max-width:760px;margin:0 auto;font-size:16px;line-height:1.9;color:var(--ink);
}
.article-body p{margin:0 0 1.2em;}
.article-body h2{
  position:relative;font-size:clamp(22px,2.6vw,30px);line-height:1.4;
  margin:40px 0 16px;padding-left:14px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.28em;width:3px;height:24px;background:var(--copper);border-radius:1px;
}
.article-body h3{font-size:20px;line-height:1.5;margin:28px 0 12px;}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.2em;}
.article-body ul{list-style:none;padding-left:0;}
.article-body ul li{position:relative;padding-left:18px;margin-bottom:8px;}
.article-body ul li::before{
  content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;background:var(--copper);border-radius:1px;
}
.article-body ol{list-style:none;counter-reset:item;padding-left:0;}
.article-body ol li{position:relative;counter-increment:item;padding-left:28px;margin-bottom:8px;}
.article-body ol li::before{
  content:counter(item,decimal-leading-zero);position:absolute;left:0;top:.1em;
  font-family:var(--font-num);font-size:13px;color:var(--copper);font-weight:600;letter-spacing:.04em;
}
.article-body blockquote{
  margin:24px 0;padding:20px;background:var(--sand);border-left:3px solid var(--copper);
  border-radius:0 var(--radius-s) var(--radius-s) 0;color:var(--muted);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body table{width:100%;border-collapse:collapse;margin:20px 0;font-size:15px;}
.article-body th,.article-body td{border:1px solid var(--line);padding:12px;text-align:left;}
.article-body th{background:var(--pine);color:var(--sand);font-weight:600;}
.article-body img{margin:8px 0 8px;}
.article-body code{
  font-family:var(--font-num);font-size:.94em;background:var(--card);
  border:1px solid var(--line);border-radius:var(--radius-s);padding:2px 6px;
}
.article-body a{color:var(--copper);border-bottom:1px solid var(--copper-soft);}
.article-body a:hover{color:var(--ink);border-bottom-color:var(--ink);}
.table-scroll{width:100%;overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius-m);}

.empty-state{
  border:1px dashed var(--line);border-radius:var(--radius-m);background:var(--card);
  min-height:200px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;
  padding:40px 24px;text-align:center;
}
.empty-state p{font-size:15px;color:var(--muted);margin:0;}

/* 文末操作 */
.end-actions{
  max-width:760px;margin:48px auto 0;padding-top:24px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
}

/* 相关推荐 */
.related{margin-top:64px;padding-top:48px;border-top:1px solid var(--line);}
.related h2{font-size:clamp(22px,2.6vw,28px);margin-bottom:8px;}
.related-sub{font-size:14px;color:var(--muted);margin:0 0 24px;}
.related-list{list-style:none;margin:0;padding:0;max-width:900px;}
.related-list li{border-bottom:1px solid var(--line);}
.related-list a{
  display:grid;grid-template-columns:48px 1fr auto;align-items:center;gap:16px;
  padding:18px 0;color:var(--ink);
}
.related-list .idx{font-family:var(--font-num);font-size:13px;color:var(--copper);letter-spacing:.06em;}
.related-list .r-title{font-size:16px;font-weight:600;transition:transform .18s ease,color .18s ease;}
.related-list .r-date{font-family:var(--font-num);font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums;}
.related-list a:hover .r-title,.related-list a:focus-visible .r-title{color:var(--copper);transform:translateX(4px);}

/* ============ 页脚 ============ */
.foot{background:var(--ink);color:var(--sand);padding:64px 0 24px;margin-top:0;}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;}
.foot h4{
  font-family:var(--font-title);font-size:15px;color:var(--sand);margin:0 0 16px;letter-spacing:.02em;
}
.foot-brand .fb-name{font-family:var(--font-title);font-size:17px;font-weight:700;margin-bottom:12px;}
.foot-brand p{font-size:13px;line-height:1.8;color:rgba(246,242,234,.66);margin:0 0 14px;max-width:24em;}
.foot-domain{font-family:var(--font-num);font-size:12px;letter-spacing:.06em;color:rgba(246,242,234,.42);}
.foot-links{display:flex;flex-direction:column;gap:10px;}
.foot-links a{font-size:14px;color:rgba(246,242,234,.78);}
.foot-links a:hover,.foot-links a:focus-visible{color:var(--copper);}
.foot-info{font-size:13px;line-height:2;color:rgba(246,242,234,.66);}
.foot-info b{color:var(--sand);font-weight:600;}
.foot-bottom{
  margin-top:48px;padding-top:20px;border-top:1px solid rgba(246,242,234,.18);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(246,242,234,.5);
}

/* 入场动效 */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .42s ease,transform .42s ease;}
.reveal.in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none;}
  *{animation:none !important;scroll-behavior:auto !important;}
  .btn:hover,.related-list a:hover .r-title{transform:none;}
}

/* ============ 响应式 ============ */
@media screen and (max-width:1023px){
  .nav-links{display:none;}
  .nav-actions .nav-mini{display:none;}
  .nav-toggle{display:flex;}
  .nav-inner{min-height:64px;}
  .main{padding:24px 0 72px;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .topbar-ann{display:none;}
}
@media screen and (max-width:767px){
  .nav-actions .btn-primary{display:none;}
  .related-list a{grid-template-columns:36px 1fr;gap:12px;}
  .related-list .r-date{grid-column:2;font-size:12px;}
}
@media screen and (max-width:639px){
  .topbar-inner{min-height:40px;}
  .topbar-label{font-size:12px;line-height:1.5;}
  .topbar-label strong{display:inline;}
  .article-head h1{font-size:28px;}
  .cover-cap{font-size:12px;padding:10px 12px;}
  .article-body{font-size:16px;line-height:1.88;}
  .end-actions{flex-direction:column;align-items:stretch;}
  .end-actions .btn,.end-actions .link-arrow{width:100%;justify-content:center;}
  .foot{padding:48px 0 20px;}
  .foot-grid{grid-template-columns:1fr;gap:28px;}
  .foot-bottom{flex-direction:column;gap:8px;}
}

/* roulang page: category1 */
:root{
  --ink:#14110F;
  --ink-soft:#2A2522;
  --copper:#C0562A;
  --copper-soft:rgba(192,86,42,.12);
  --pine:#2C4A3E;
  --pine-deep:#22392F;
  --sand:#F6F2EA;
  --card:#FFFCF6;
  --line:#E2DACD;
  --muted:#6B6360;
  --disabled:#A8A29B;
  --radius-s:2px;
  --radius-m:4px;
  --shadow-card:0 1px 0 var(--line);
  --shadow-hover:0 10px 28px rgba(20,17,15,.08);
  --space-1:8px;
  --space-2:12px;
  --space-3:16px;
  --space-4:24px;
  --space-5:32px;
  --space-6:48px;
  --space-7:64px;
  --space-8:96px;
  --font-title:"Noto Serif SC","Source Han Serif SC","Songti SC","STSong",serif;
  --font-body:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-mono:ui-monospace,"SFMono-Regular","Barlow",Consolas,monospace;
}

*,*::before,*::after{box-sizing:border-box;}

html{scroll-behavior:smooth;}

body{
  margin:0;
  background:var(--sand);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

h1,h2,h3,h4{
  font-family:var(--font-title);
  font-weight:700;
  letter-spacing:-.02em;
  color:var(--ink);
  margin:0;
  line-height:1.35;
}

p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}

a{
  color:var(--copper);
  text-decoration:none;
  transition:color .18s ease;
}
a:hover{color:var(--ink);}

img{max-width:100%;display:block;}

ul,ol{margin:0;padding:0;list-style:none;}

button{
  font-family:inherit;
  border:0;
  background:none;
  cursor:pointer;
  color:inherit;
}

input,select,textarea{font-family:inherit;font-size:16px;}

a:focus-visible,
button:focus-visible,
summary:focus-visible,
input:focus-visible,
select:focus-visible{
  outline:2px solid var(--copper);
  outline-offset:2px;
  border-radius:var(--radius-s);
}

.grid-container{
  max-width:1200px;
  padding-left:32px;
  padding-right:32px;
  margin-left:auto;
  margin-right:auto;
}

/* ============ 顶部公告条 ============ */
.topbar{
  background:var(--pine);
  color:var(--sand);
  border-bottom:1px solid rgba(246,242,234,.18);
}
.topbar-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:var(--space-4);
  min-height:44px;
  padding:6px 0;
  font-size:13px;
  line-height:1.5;
}
.topbar-label{
  color:rgba(246,242,234,.86);
  letter-spacing:.01em;
}
.topbar-label strong{
  color:var(--copper);
  font-weight:600;
  font-variant-numeric:tabular-nums;
  font-family:var(--font-mono);
}
.topbar-cta{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  height:28px;
  padding:0 14px;
  border:1px solid rgba(246,242,234,.45);
  border-radius:var(--radius-s);
  color:var(--sand);
  font-size:12px;
  letter-spacing:.04em;
  white-space:nowrap;
  transition:background .18s ease,border-color .18s ease,color .18s ease;
}
.topbar-cta:hover{
  background:var(--sand);
  border-color:var(--sand);
  color:var(--pine);
}

/* ============ 导航 ============ */
.site-head{position:relative;z-index:40;}
.nav{
  position:sticky;
  top:0;
  z-index:40;
  background:var(--sand);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease;
}
.nav.is-stuck{box-shadow:0 8px 24px rgba(20,17,15,.06);}
.nav-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:var(--space-4);
  min-height:76px;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--ink);
  flex:0 0 auto;
}
.logo:hover{color:var(--ink);}
.logo-mark{
  width:28px;
  height:28px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  background:var(--copper);
  color:#fff;
  font-family:var(--font-title);
  font-size:16px;
  font-weight:700;
  border-radius:var(--radius-s);
  line-height:1;
}
.logo-text{display:flex;flex-direction:column;line-height:1.2;}
.logo-line1{
  font-size:11px;
  letter-spacing:.14em;
  color:var(--muted);
  text-transform:uppercase;
}
.logo-line2{
  font-size:17px;
  font-weight:700;
  letter-spacing:-.01em;
  font-family:var(--font-title);
}
.nav-links{
  display:flex;
  align-items:center;
  gap:var(--space-5);
  margin:0;
}
.nav-links a{
  position:relative;
  display:inline-block;
  padding:6px 0;
  font-size:16px;
  letter-spacing:.02em;
  color:var(--ink-soft);
  font-weight:500;
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:0;
  bottom:0;
  width:0;
  height:2px;
  background:var(--copper);
  transition:width .18s ease;
}
.nav-links a:hover{color:var(--ink);}
.nav-links a:hover::after{width:100%;}
.nav-links a.is-active{font-weight:700;color:var(--ink);}
.nav-links a.is-active::after{width:100%;}
.nav-actions{
  display:flex;
  align-items:center;
  gap:var(--space-3);
  flex:0 0 auto;
}
.nav-mini{
  font-size:12px;
  letter-spacing:.04em;
  color:var(--copper);
  border-bottom:1px solid transparent;
  padding-bottom:2px;
}
.nav-mini:hover{border-color:var(--copper);color:var(--copper);}
.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  border:1px solid var(--line);
  border-radius:var(--radius-s);
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:4px;
  background:var(--card);
  transition:border-color .18s ease;
}
.nav-toggle span{
  display:block;
  width:18px;
  height:1.5px;
  background:var(--ink);
  transition:transform .2s ease,opacity .2s ease;
}
.nav-toggle:hover{border-color:var(--copper);}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(5.5px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-5.5px) rotate(-45deg);}

/* ============ 抽屉 ============ */
.scrim{
  position:fixed;
  inset:0;
  background:rgba(20,17,15,.45);
  opacity:0;
  visibility:hidden;
  transition:opacity .3s ease,visibility .3s ease;
  z-index:55;
}
.scrim.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;
  top:0;
  right:0;
  width:min(360px,86vw);
  height:100%;
  background:var(--card);
  border-left:1px solid var(--line);
  transform:translateX(101%);
  transition:transform .3s ease;
  z-index:60;
  padding:var(--space-4) var(--space-4) var(--space-6);
  overflow-y:auto;
}
.drawer.is-open{transform:none;}
.drawer-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding-bottom:var(--space-3);
  border-bottom:1px solid var(--line);
  margin-bottom:var(--space-4);
}
.drawer-title{
  font-family:var(--font-title);
  font-size:16px;
  font-weight:700;
}
.drawer-close{
  width:44px;height:44px;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:22px;line-height:1;
  color:var(--muted);
  border:1px solid transparent;
  border-radius:var(--radius-s);
}
.drawer-close:hover{color:var(--ink);border-color:var(--line);}
.drawer-list{display:flex;flex-direction:column;gap:2px;margin-bottom:var(--space-5);}
.drawer-list a{
  display:block;
  padding:13px 12px;
  color:var(--ink-soft);
  font-size:16px;
  border-left:3px solid transparent;
  border-radius:var(--radius-s);
  transition:background .18s ease,border-color .18s ease,color .18s ease;
}
.drawer-list a:hover{background:var(--sand);border-left-color:var(--copper);color:var(--ink);}
.drawer-list a.is-active{font-weight:700;color:var(--ink);border-left-color:var(--copper);background:var(--sand);}
.drawer-cta{width:100%;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  height:44px;
  padding:0 22px;
  border:1px solid transparent;
  border-radius:var(--radius-s);
  font-size:15px;
  font-weight:600;
  letter-spacing:.02em;
  line-height:1;
  cursor:pointer;
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.btn:active{transform:none;}
.btn-primary{background:var(--ink);color:var(--sand);}
.btn-primary:hover{background:var(--copper);color:#fff;transform:translateY(-1px);box-shadow:0 6px 16px rgba(20,17,15,.12);}
.btn-accent{background:var(--copper);color:#fff;}
.btn-accent:hover{background:var(--ink);color:var(--sand);transform:translateY(-1px);box-shadow:0 6px 16px rgba(20,17,15,.12);}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink);}
.btn-ghost:hover{background:var(--ink);color:var(--sand);transform:translateY(-1px);}
.btn-light{background:var(--sand);border-color:rgba(246,242,234,.6);color:var(--pine);}
.btn-light:hover{background:#fff;border-color:#fff;color:var(--pine);transform:translateY(-1px);}

/* ============ 标签 / 徽章 ============ */
.badge{
  display:inline-block;
  padding:4px 10px;
  font-size:12px;
  letter-spacing:.04em;
  line-height:1.5;
  border:1px solid var(--copper);
  border-radius:var(--radius-s);
  background:transparent;
  color:var(--copper);
}
.badge-light{
  border-color:rgba(246,242,234,.55);
  color:rgba(246,242,234,.92);
}

/* ============ 页头 ============ */
.page-hero{
  position:relative;
  min-height:360px;
  display:flex;
  align-items:center;
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
.page-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(90deg,rgba(20,17,15,.82) 0%,rgba(20,17,15,.62) 52%,rgba(20,17,15,.3) 100%);
}
.page-hero .grid-container{position:relative;z-index:2;width:100%;}
.hero-inner{
  max-width:680px;
  padding:var(--space-7) 0;
  color:var(--sand);
}
.hero-eyebrow{
  display:flex;
  align-items:center;
  gap:var(--space-2);
  flex-wrap:wrap;
  margin-bottom:var(--space-4);
}
.hero-inner h1{
  font-size:clamp(30px,4.2vw,50px);
  line-height:1.25;
  color:#fff;
  margin-bottom:var(--space-3);
}
.hero-inner h1 .u-mark{
  border-bottom:3px solid var(--copper);
  padding-bottom:2px;
}
.hero-lead{
  font-size:16px;
  color:rgba(246,242,234,.86);
  max-width:560px;
  margin-bottom:var(--space-5);
}
.hero-btns{display:flex;gap:var(--space-3);flex-wrap:wrap;}

/* ============ 面包屑 ============ */
.crumb-bar{
  background:var(--card);
  border-bottom:1px solid var(--line);
}
.crumb{
  display:flex;
  align-items:center;
  gap:8px;
  flex-wrap:wrap;
  padding:12px 0;
  font-size:13px;
  color:var(--muted);
}
.crumb a{color:var(--copper);}
.crumb a:hover{color:var(--ink);}
.crumb .sep{color:var(--disabled);}
.crumb .current{color:var(--ink);font-weight:600;}

/* ============ 板块通用 ============ */
.sec{padding:var(--space-8) 0;}
.sec--tight{padding:var(--space-7) 0;}
.sec--alt{background:var(--card);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.sec-head{max-width:760px;margin-bottom:var(--space-6);}
.sec-head--center{margin-left:auto;margin-right:auto;text-align:center;}
.sec-kicker{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:12px;
  letter-spacing:.16em;
  color:var(--copper);
  font-family:var(--font-mono);
  margin-bottom:var(--space-3);
}
.sec-kicker::before{
  content:"";
  display:inline-block;
  width:24px;
  height:3px;
  background:var(--copper);
}
.sec-title{
  font-size:clamp(26px,3vw,34px);
  margin-bottom:var(--space-3);
}
.sec-desc{color:var(--muted);font-size:15px;margin:0;}

/* ============ 时间轴 ============ */
.timeline{max-width:900px;}
.tl-item{
  position:relative;
  display:grid;
  grid-template-columns:64px 1fr;
  gap:var(--space-4);
  padding-bottom:var(--space-6);
}
.tl-item::before{
  content:"";
  position:absolute;
  left:31px;
  top:56px;
  bottom:6px;
  width:1px;
  background:var(--line);
}
.tl-item:last-child{padding-bottom:0;}
.tl-item:last-child::before{display:none;}
.tl-num{
  width:48px;
  height:48px;
  border:1px solid var(--copper);
  border-radius:50%;
  background:var(--sand);
  color:var(--copper);
  display:flex;
  align-items:center;
  justify-content:center;
  font-family:var(--font-mono);
  font-size:14px;
  font-variant-numeric:tabular-nums;
  position:relative;
  z-index:2;
}
.tl-body{padding-top:6px;}
.tl-body h3{
  font-size:20px;
  margin-bottom:var(--space-2);
}
.tl-body p{
  color:var(--ink-soft);
  font-size:15px;
  margin:0;
  max-width:640px;
}
.tl-tip{
  margin-top:var(--space-3);
  padding:14px 16px;
  background:var(--card);
  border:1px solid var(--line);
  border-left:3px solid var(--copper);
  border-radius:var(--radius-m);
  font-size:14px;
  color:var(--muted);
  line-height:1.75;
}
.tl-tip b{color:var(--ink);font-weight:600;}

/* ============ 信息条 ============ */
.stat-strip{
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.stat-strip .grid-x{border-left:1px solid var(--line);}
.stat-cell{
  padding:var(--space-5) var(--space-4);
  border-right:1px solid var(--line);
  background:var(--card);
  height:100%;
}
.stat-cell .label{
  display:block;
  font-size:12px;
  letter-spacing:.14em;
  color:var(--muted);
  margin-bottom:10px;
}
.stat-cell .value{
  font-family:var(--font-title);
  font-size:20px;
  font-weight:700;
  color:var(--ink);
  margin-bottom:8px;
}
.stat-cell p{font-size:14px;color:var(--muted);margin:0;}

/* ============ 图文区 ============ */
.split-figure{
  border:1px solid var(--line);
  border-radius:var(--radius-m);
  overflow:hidden;
  background:var(--card);
  box-shadow:var(--shadow-card);
}
.split-figure .fig-media{
  aspect-ratio:16/10;
  overflow:hidden;
}
.split-figure .fig-media img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .35s ease;
}
.split-figure:hover .fig-media img{transform:scale(1.02);}
.split-figure figcaption{
  padding:12px 16px;
  font-size:13px;
  color:var(--muted);
  border-top:1px solid var(--line);
}
.check-list{display:flex;flex-direction:column;gap:var(--space-3);margin-top:var(--space-4);}
.check-list li{
  display:grid;
  grid-template-columns:16px 1fr;
  gap:12px;
  font-size:15px;
  color:var(--ink-soft);
  line-height:1.8;
}
.check-list li::before{
  content:"";
  width:10px;
  height:10px;
  margin-top:11px;
  background:var(--copper);
  border-radius:1px;
}
.check-list b{color:var(--ink);font-weight:600;}

/* ============ FAQ ============ */
.faq-wrap{max-width:900px;margin:0 auto;}
.faq-item{
  border-bottom:1px solid var(--line);
  background:transparent;
  transition:background .18s ease;
}
.faq-item:first-child{border-top:1px solid var(--line);}
.faq-item summary{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:var(--space-3);
  padding:20px 4px 20px 0;
  font-size:17px;
  font-weight:600;
  color:var(--ink);
  cursor:pointer;
  list-style:none;
  border-left:3px solid transparent;
  padding-left:16px;
  transition:border-color .18s ease,background .18s ease,color .18s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{background:var(--card);border-left-color:rgba(192,86,42,.45);}
.faq-item summary .mark{
  flex:0 0 auto;
  width:22px;
  height:22px;
  border:1px solid var(--line);
  border-radius:var(--radius-s);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-family:var(--font-mono);
  font-size:14px;
  color:var(--copper);
  background:var(--card);
  transition:transform .2s ease,border-color .18s ease;
}
.faq-item[open] summary{border-left-color:var(--copper);background:var(--card);}
.faq-item[open] summary .mark{transform:rotate(45deg);border-color:var(--copper);}
.faq-answer{
  padding:16px 20px 22px 16px;
  font-size:15px;
  line-height:1.85;
  color:var(--ink-soft);
  background:var(--card);
}
.faq-answer p{margin:0;}

/* ============ CTA ============ */
.cta-band{
  background:var(--pine);
  color:var(--sand);
  padding:var(--space-7) 0;
  border-top:1px solid rgba(246,242,234,.18);
  border-bottom:1px solid rgba(246,242,234,.18);
}
.cta-band h2{
  color:#fff;
  font-size:clamp(24px,2.6vw,32px);
  margin-bottom:var(--space-3);
}
.cta-band p{
  color:rgba(246,242,234,.8);
  font-size:15px;
  max-width:520px;
  margin:0;
}
.cta-actions{
  display:flex;
  align-items:center;
  gap:var(--space-3);
  flex-wrap:wrap;
  justify-content:flex-end;
}
.cta-link{
  color:rgba(246,242,234,.85);
  font-size:14px;
  border-bottom:1px solid rgba(246,242,234,.4);
  padding-bottom:2px;
}
.cta-link:hover{color:#fff;border-color:#fff;}

/* ============ 页脚 ============ */
.foot{
  background:var(--ink);
  color:rgba(246,242,234,.82);
  padding:var(--space-7) 0 0;
  font-size:14px;
}
.foot-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:var(--space-6);
  padding-bottom:var(--space-6);
}
.foot h4{
  color:var(--sand);
  font-family:var(--font-body);
  font-size:14px;
  font-weight:700;
  letter-spacing:.06em;
  margin-bottom:var(--space-3);
}
.fb-name{
  font-family:var(--font-title);
  font-size:18px;
  font-weight:700;
  color:var(--sand);
  margin-bottom:var(--space-2);
  letter-spacing:-.01em;
}
.foot-brand p{
  color:rgba(246,242,234,.66);
  font-size:14px;
  line-height:1.8;
  margin-bottom:var(--space-3);
}
.foot-domain{
  display:inline-block;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.04em;
  color:rgba(246,242,234,.5);
  border:1px solid rgba(246,242,234,.2);
  border-radius:var(--radius-s);
  padding:4px 10px;
}
.foot-links{display:flex;flex-direction:column;gap:10px;}
.foot-links a{
  color:rgba(246,242,234,.76);
  font-size:14px;
  transition:color .18s ease,padding-left .18s ease;
}
.foot-links a:hover{color:var(--sand);padding-left:4px;}
.foot-info{
  color:rgba(246,242,234,.7);
  font-size:14px;
  line-height:2;
}
.foot-info b{color:var(--sand);font-weight:600;}
.foot-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:var(--space-3);
  flex-wrap:wrap;
  padding:var(--space-4) 0;
  border-top:1px solid rgba(246,242,234,.18);
  font-size:13px;
  color:rgba(246,242,234,.55);
}

/* ============ 动效 ============ */
.reveal{
  opacity:0;
  transform:translateY(12px);
  transition:opacity .42s ease,transform .42s ease;
}
.reveal.is-in{opacity:1;transform:none;}

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

/* ============ 响应式 ============ */
@media screen and (max-width:1023px){
  .grid-container{padding-left:24px;padding-right:24px;}
  .sec{padding:72px 0;}
  .nav-links{gap:var(--space-4);}
  .nav-links a{font-size:15px;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:var(--space-5);}
  .cta-actions{justify-content:flex-start;}
}

@media screen and (max-width:900px){
  .nav-links,.nav-actions{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-inner{min-height:64px;}
}

@media screen and (max-width:767px){
  .topbar-inner{flex-direction:column;align-items:flex-start;gap:8px;padding:10px 0;font-size:12px;}
  .page-hero{min-height:300px;}
  .page-hero::before{background:linear-gradient(180deg,rgba(20,17,15,.9) 0%,rgba(20,17,15,.72) 60%,rgba(20,17,15,.62) 100%);}
  .hero-inner{padding:56px 0;}
  .stat-cell{border-right:1px solid var(--line);border-bottom:1px solid var(--line);}
  .split-figure{margin-top:var(--space-5);}
}

@media screen and (max-width:640px){
  body{font-size:15px;}
  .grid-container{padding-left:20px;padding-right:20px;}
  .sec{padding:48px 0;}
  .sec--tight{padding:40px 0;}
  .logo-line2{font-size:15px;}
  .logo-line1{font-size:10px;}
  .tl-item{grid-template-columns:36px 1fr;gap:16px;}
  .tl-num{width:36px;height:36px;font-size:12px;}
  .tl-item::before{left:17px;top:44px;}
  .tl-body h3{font-size:18px;}
  .hero-btns .btn{width:100%;}
  .foot-grid{grid-template-columns:1fr;}
  .foot-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .faq-item summary{font-size:16px;padding-left:12px;}
  .cta-band{padding:48px 0;}
}

/* roulang page: category2 */
:root{
  --ink:#14110F;
  --copper:#C0562A;
  --copper-soft:rgba(192,86,42,.30);
  --pine:#2C4A3E;
  --paper:#F6F2EA;
  --card:#FFFCF6;
  --line:#E2DACD;
  --muted:#6B6360;
  --disabled:#A8A29B;
  --r-sm:2px;
  --r-md:4px;
  --sh-card:0 1px 0 #E2DACD;
  --sh-hover:0 10px 28px rgba(20,17,15,.08);
  --sp-1:8px;--sp-2:12px;--sp-3:16px;--sp-4:24px;--sp-5:32px;--sp-6:48px;--sp-7:64px;--sp-8:96px;
  --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",sans-serif;
  --font-mono:ui-monospace,"Barlow",Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  font-weight:400;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;padding:0}
ul,ol{list-style:none}
img{max-width:100%;display:block;border-radius:var(--r-md)}
a{color:var(--ink);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--copper)}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--copper);outline-offset:0}
h1,h2,h3{font-family:var(--font-serif);font-weight:700;letter-spacing:-.02em;line-height:1.35}
h1{font-size:clamp(28px,4.2vw,44px)}
h2{font-size:clamp(24px,2.8vw,34px)}
h3{font-size:20px;line-height:1.5}
p{line-height:1.85}

/* ---------- 通用容器 ---------- */
.grid-container{max-width:1200px!important;padding-left:32px;padding-right:32px}
.section{padding:var(--sp-8) 0}
.section-tight{padding:var(--sp-7) 0}
.sec-head{max-width:760px;margin-bottom:var(--sp-5)}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.kicker{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12px;letter-spacing:.14em;color:var(--copper);
  font-family:var(--font-sans);font-weight:600;
  text-transform:none;margin-bottom:14px;
}
.kicker::before{content:"";width:24px;height:3px;background:var(--copper);display:block}
.lead{color:var(--muted);font-size:16px;line-height:1.9;max-width:720px}

/* ---------- 顶部公告条 ---------- */
.topbar{background:var(--pine);color:var(--paper);border-bottom:1px solid rgba(246,242,234,.18)}
.topbar-inner{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:44px;padding:6px 0;flex-wrap:wrap;
}
.topbar-label{font-size:13px;line-height:1.6;color:rgba(246,242,234,.88)}
.topbar-label strong{color:#F0A87C;font-weight:600;font-family:var(--font-mono)}
.topbar-cta{
  font-size:13px;color:var(--paper);border:1px solid rgba(246,242,234,.55);
  padding:5px 14px;border-radius:var(--r-sm);white-space:nowrap;
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease;
}
.topbar-cta:hover{background:var(--paper);color:var(--pine);border-color:var(--paper);transform:translateY(-1px)}
.topbar-cta:active{transform:none}

/* ---------- 导航 ---------- */
.site-head{position:relative;z-index:50}
.nav{
  background:var(--paper);border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease;
}
.nav.is-stuck{box-shadow:0 8px 24px rgba(20,17,15,.06)}
.nav-inner{display:flex;align-items:center;gap:24px;min-height:76px}
.logo{display:flex;align-items:center;gap:12px;flex:none}
.logo-mark{
  width:28px;height:28px;border-radius:var(--r-sm);background:var(--copper);
  color:#fff;font-family:var(--font-serif);font-weight:700;font-size:16px;
  display:flex;align-items:center;justify-content:center;flex:none;
}
.logo-text{display:flex;flex-direction:column;line-height:1.2}
.logo-line1{font-size:14px;font-weight:700;letter-spacing:.04em}
.logo-line2{font-size:12px;color:var(--muted);font-weight:500;letter-spacing:.02em}
.logo:hover .logo-line2{color:var(--copper)}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:auto}
.nav-links a{
  position:relative;font-size:16px;letter-spacing:.02em;padding:6px 0;display:inline-block;
  transition:color .18s ease;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--copper);
  transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.nav-links a:hover::after,.nav-links a:focus-visible::after,.nav-links a.is-active::after{transform:scaleX(1)}
.nav-links a.is-active{font-weight:700;color:var(--ink)}
.nav-actions{display:flex;align-items:center;gap:16px;flex:none}
.nav-mini{font-size:12px;color:var(--copper);letter-spacing:.04em}
.nav-mini:hover{color:var(--pine)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  height:44px;padding:0 22px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;letter-spacing:.02em;border:1px solid transparent;
  cursor:pointer;transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.btn:hover{transform:translateY(-1px);box-shadow:0 6px 16px rgba(20,17,15,.12)}
.btn:active{transform:none;box-shadow:none}
.btn:focus-visible{outline:2px solid var(--copper);outline-offset:0}
.btn-primary{background:var(--ink);color:var(--paper)}
.btn-primary:hover{background:var(--copper);color:#fff}
.btn-accent{background:var(--copper);color:#fff}
.btn-accent:hover{background:var(--ink);color:var(--paper)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:var(--paper)}
.btn-light{background:transparent;color:var(--paper);border-color:rgba(246,242,234,.7)}
.btn-light:hover{background:var(--paper);color:var(--pine);border-color:var(--paper)}
.btn-sm{height:36px;padding:0 16px;font-size:14px}
.btn-block{width:100%}

/* ---------- 移动抽屉 ---------- */
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);background:var(--card);
  border-radius:var(--r-sm);cursor:pointer;padding:0;align-items:center;justify-content:center;
  flex-direction:column;gap:5px;transition:border-color .18s ease,background .18s ease;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);transition:background .18s ease}
.nav-toggle:hover{border-color:var(--copper)}
.nav-toggle:hover span{background:var(--copper)}
.drawer{position:fixed;inset:0;z-index:120;pointer-events:none;visibility:hidden}
.drawer.is-open{pointer-events:auto;visibility:visible}
.drawer-mask{position:absolute;inset:0;background:rgba(20,17,15,.5);opacity:0;transition:opacity .24s ease}
.drawer.is-open .drawer-mask{opacity:1}
.drawer-panel{
  position:absolute;top:0;right:0;bottom:0;width:min(84vw,340px);
  background:var(--paper);border-left:1px solid var(--line);
  padding:20px;display:flex;flex-direction:column;gap:20px;
  transform:translateX(100%);transition:transform .28s ease;
}
.drawer.is-open .drawer-panel{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;gap:10px;font-size:13px;font-weight:700;line-height:1.3}
.drawer-close{
  margin-left:auto;width:40px;height:40px;border:1px solid var(--line);background:var(--card);
  border-radius:var(--r-sm);font-size:18px;line-height:1;cursor:pointer;color:var(--ink);
  transition:border-color .18s ease,color .18s ease;
}
.drawer-close:hover{border-color:var(--copper);color:var(--copper)}
.drawer-links{display:flex;flex-direction:column;gap:2px}
.drawer-links a{
  padding:12px 4px;font-size:16px;border-bottom:1px solid var(--line);
}
.drawer-links a.is-active{color:var(--copper);font-weight:700}
.drawer-cta{margin-top:auto;width:100%}

/* ---------- 面包屑 ---------- */
.crumb-bar{padding:16px 0 0}
.crumb{font-size:13px;color:var(--muted);display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.crumb a{color:var(--copper)}
.crumb a:hover{color:var(--pine);text-decoration:underline}
.crumb .sep{color:var(--disabled)}
.crumb .current{color:var(--muted)}

/* ---------- 页头 ---------- */
.page-head{
  padding:56px 0 48px;background:var(--paper);
  border-bottom:1px solid var(--line);text-align:center;position:relative;
}
.page-head::after{
  content:"";position:absolute;left:50%;bottom:-1px;transform:translateX(-50%);
  width:72px;height:3px;background:var(--copper);
}
.page-head h1{max-width:880px;margin:0 auto}
.page-head .lead{margin:20px auto 0;max-width:680px;text-align:center}
.head-note{
  margin-top:22px;display:inline-flex;align-items:center;gap:10px;
  font-size:13px;color:var(--muted);
}
.head-note .dot{width:6px;height:6px;background:var(--copper);display:block;border-radius:1px}

/* ---------- 三项自查条 ---------- */
.selfcheck{border-bottom:1px solid var(--line);background:var(--card)}
.selfcheck-inner{display:grid;grid-template-columns:repeat(3,1fr)}
.sc-item{padding:28px 28px 28px 0;border-right:1px solid var(--line)}
.sc-item:last-child{border-right:0;padding-right:0}
.sc-item:not(:first-child){padding-left:28px}
.sc-num{
  font-family:var(--font-mono);font-size:13px;color:var(--copper);letter-spacing:.08em;
  display:block;margin-bottom:10px;font-variant-numeric:tabular-nums;
}
.sc-item h3{font-size:18px;margin-bottom:8px}
.sc-item p{font-size:14px;color:var(--muted);line-height:1.8}

/* ---------- FAQ 主体 ---------- */
.faq-layout{padding-top:var(--sp-7)}
.faq-main{min-width:0}
.faq-group{margin-bottom:var(--sp-7)}
.faq-group:last-child{margin-bottom:0}
.group-head{display:flex;align-items:flex-start;gap:14px;margin-bottom:var(--sp-4)}
.group-head::before{
  content:"";width:28px;height:3px;background:var(--copper);display:block;margin-top:16px;flex:none;
}
.group-head h2{font-size:clamp(22px,2.2vw,28px)}
.group-head .g-desc{font-size:14px;color:var(--muted);margin-top:6px}
.faq-col{display:grid;grid-template-columns:1fr 1fr;gap:0 32px;align-items:start}
.faq-item{
  border-bottom:1px solid var(--line);
  background:transparent;transition:background .18s ease;
}
.faq-item:first-child{border-top:1px solid var(--line)}
.faq-item summary{
  list-style:none;cursor:pointer;position:relative;
  padding:18px 44px 18px 0;
  font-size:16px;font-weight:600;line-height:1.6;color:var(--ink);
  transition:color .18s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";position:absolute;right:0;top:16px;
  width:24px;height:24px;border:1px solid var(--line);border-radius:var(--r-sm);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-mono);font-size:15px;color:var(--muted);line-height:1;
  transition:border-color .18s ease,color .18s ease,background .18s ease;
}
.faq-item summary:hover{color:var(--copper)}
.faq-item summary:hover::after{border-color:var(--copper);color:var(--copper)}
.faq-item[open]{background:var(--card);border-left:3px solid var(--copper);padding-left:16px}
.faq-item[open] summary{color:var(--ink)}
.faq-item[open] summary::after{content:"−";border-color:var(--copper);color:var(--copper);background:rgba(192,86,42,.06)}
.faq-a{padding:0 0 20px;font-size:15px;line-height:1.85;color:var(--muted)}
.faq-a strong{color:var(--ink);font-weight:600}
.faq-a .tip{
  margin-top:12px;padding:12px 16px;background:var(--paper);
  border-left:3px solid var(--copper);border-radius:0 var(--r-sm) var(--r-sm) 0;
  font-size:14px;color:var(--ink);
}
.faq-a ul{margin-top:10px;display:flex;flex-direction:column;gap:8px}
.faq-a ul li{position:relative;padding-left:18px}
.faq-a ul li::before{
  content:"";position:absolute;left:0;top:12px;width:6px;height:6px;background:var(--copper);
}

/* ---------- 侧栏 ---------- */
.side{position:sticky;top:96px;display:flex;flex-direction:column;gap:24px}
.side-title{
  font-size:13px;font-weight:700;letter-spacing:.1em;color:var(--muted);
  padding-bottom:12px;border-bottom:1px solid var(--line);margin-bottom:4px;
}
.side-nav{display:flex;flex-direction:column}
.side-nav a{
  display:flex;align-items:center;gap:10px;
  padding:12px 0;font-size:15px;border-bottom:1px solid var(--line);
  transition:color .18s ease,padding-left .18s ease;
}
.side-nav a .idx{font-family:var(--font-mono);font-size:12px;color:var(--copper);letter-spacing:.06em}
.side-nav a:hover{color:var(--copper);padding-left:4px}
.side-note{
  background:var(--pine);color:var(--paper);border-radius:var(--r-md);
  padding:24px;border:1px solid rgba(246,242,234,.18);
}
.side-note .sn-label{font-size:12px;letter-spacing:.12em;color:#F0A87C;margin-bottom:10px;font-weight:600}
.side-note p{font-size:14px;line-height:1.8;color:rgba(246,242,234,.9)}
.side-note p+p{margin-top:10px}
.side-note a{
  display:inline-block;margin-top:16px;font-size:13px;color:var(--paper);
  border-bottom:1px solid rgba(246,242,234,.6);padding-bottom:2px;
}
.side-note a:hover{color:#F0A87C;border-color:#F0A87C}
.side-figure{border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;background:var(--card)}
.side-figure img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:0}
.side-figure figcaption{
  padding:12px 16px;font-size:13px;color:var(--muted);line-height:1.6;
  border-top:1px solid var(--line);
}

/* ---------- CTA 通栏 ---------- */
.cta-band{background:var(--pine);color:var(--paper)}
.cta-inner{
  display:grid;grid-template-columns:1.35fr .65fr;gap:40px;align-items:center;
  padding:var(--sp-7) 0;
}
.cta-band h2{color:var(--paper);font-size:clamp(22px,2.4vw,30px);margin-bottom:14px}
.cta-band p{font-size:15px;line-height:1.85;color:rgba(246,242,234,.86);max-width:620px}
.cta-points{display:flex;flex-wrap:wrap;gap:10px 24px;margin-top:18px}
.cta-points span{font-size:14px;color:rgba(246,242,234,.9);display:inline-flex;align-items:center;gap:8px}
.cta-points span::before{content:"";width:8px;height:8px;background:var(--copper);display:block}
.cta-action{display:flex;flex-direction:column;gap:12px;justify-self:end;width:100%;max-width:260px}
.cta-action .btn{width:100%}
.cta-hint{font-size:12px;color:rgba(246,242,234,.7);text-align:center;line-height:1.6}

/* ---------- 页脚 ---------- */
.foot{background:var(--ink);color:var(--paper);padding:var(--sp-7) 0 0;margin-top:0}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:var(--sp-6)}
.foot h4{
  font-family:var(--font-sans);font-size:14px;font-weight:600;letter-spacing:.06em;
  color:var(--paper);margin:0 0 16px;
}
.foot-brand .fb-name{font-family:var(--font-serif);font-size:17px;font-weight:700;margin-bottom:12px;letter-spacing:-.01em}
.foot-brand p{font-size:14px;line-height:1.8;color:rgba(246,242,234,.72);max-width:300px}
.foot-domain{
  margin-top:14px;font-family:var(--font-mono);font-size:13px;letter-spacing:.06em;
  color:rgba(246,242,234,.55);border:1px solid rgba(246,242,234,.18);
  display:inline-block;padding:4px 10px;border-radius:var(--r-sm);
}
.foot-links{display:flex;flex-direction:column;gap:10px}
.foot-links a{font-size:14px;color:rgba(246,242,234,.78);transition:color .18s ease,padding-left .18s ease}
.foot-links a:hover{color:#F0A87C;padding-left:4px}
.foot-info{font-size:14px;line-height:1.9;color:rgba(246,242,234,.72)}
.foot-info b{color:var(--paper);font-weight:600}
.foot-bottom{
  border-top:1px solid rgba(246,242,234,.18);
  padding:20px 0 28px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(246,242,234,.6);
}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .42s ease,transform .42s ease}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  .btn:hover,.card:hover,.side-nav a:hover{transform:none}
}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1023px){
  .grid-container{padding-left:24px;padding-right:24px}
  .section{padding:72px 0}
  .section-tight{padding:56px 0}
  .nav-links{display:none}
  .nav-actions{display:none}
  .nav-toggle{display:flex}
  .nav-inner{min-height:60px;gap:12px}
  .selfcheck-inner{grid-template-columns:1fr}
  .sc-item{border-right:0;border-bottom:1px solid var(--line);padding:22px 0!important}
  .sc-item:last-child{border-bottom:0}
  .side{position:static;margin-top:40px}
  .cta-inner{grid-template-columns:1fr;gap:24px;padding:56px 0}
  .cta-action{justify-self:start;max-width:100%}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media screen and (max-width:767px){
  .faq-col{grid-template-columns:1fr;gap:0}
  .page-head{padding:40px 0 36px}
  .page-head .lead{font-size:15px}
  .faq-layout{padding-top:48px}
  .faq-group{margin-bottom:48px}
  .foot-grid{grid-template-columns:1fr;gap:28px}
  .foot-bottom{flex-direction:column}
}
@media screen and (max-width:519px){
  .grid-container{padding-left:20px;padding-right:20px}
  .section{padding:48px 0}
  .logo-line2{display:none}
  .faq-item summary{font-size:15px;padding:16px 40px 16px 0}
  .faq-item[open]{padding-left:12px}
  .topbar-inner{gap:8px}
  .topbar-label{font-size:12px}
  .cta-points span{font-size:13px}
}

/* roulang page: category3 */
:root{
  --ink:#14110F;
  --ink-soft:#2A2523;
  --copper:#C0562A;
  --copper-soft:rgba(192,86,42,.30);
  --green:#2C4A3E;
  --green-deep:#22382F;
  --paper:#F6F2EA;
  --card:#FFFCF6;
  --line:#E2DACD;
  --muted:#6B6360;
  --disabled:#A8A29B;
  --r2:2px;
  --r4:4px;
  --shadow-card:0 1px 0 #E2DACD;
  --shadow-hover:0 10px 28px rgba(20,17,15,.08);
  --shadow-btn:0 6px 16px rgba(20,17,15,.12);
  --serif:'Noto Serif SC','Source Han Serif SC','Songti SC','SimSun',serif;
  --sans:'Noto Sans SC','PingFang SC','Hiragino Sans GB','Microsoft YaHei',sans-serif;
  --mono:ui-monospace,'SFMono-Regular','Barlow',Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r4);}
a{color:var(--ink);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--copper);}
p{margin:0 0 1em;}
h1,h2,h3,h4{margin:0;font-family:var(--serif);font-weight:700;letter-spacing:-.02em;color:var(--ink);}
h1{font-size:clamp(30px,4.2vw,46px);line-height:1.28;}
h2{font-size:clamp(24px,3vw,34px);line-height:1.35;}
h3{font-size:20px;line-height:1.5;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--copper);outline-offset:0;}
.grid-container{max-width:1200px;padding-left:32px;padding-right:32px;}
.grid-container .grid-container{padding-left:0;padding-right:0;}

/* 骨架通用 */
.section{padding:96px 0;}
.section-tight{padding:72px 0;}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:13px;letter-spacing:.06em;color:var(--copper);
  font-family:var(--sans);font-weight:600;margin-bottom:16px;
}
.eyebrow::before{content:"";width:24px;height:3px;background:var(--copper);display:inline-block;}
.sec-desc{color:var(--muted);font-size:15px;max-width:640px;}
.hairline{height:1px;background:var(--line);border:0;margin:0;}

/* 顶部公告条 */
.topbar{
  background:var(--green);color:var(--paper);font-size:13px;
  min-height:44px;display:flex;align-items:center;
}
.topbar-inner{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:44px;padding:6px 0;
}
.topbar-label{color:rgba(246,242,234,.86);}
.topbar-label strong{font-family:var(--mono);font-variant-numeric:tabular-nums;color:var(--copper);font-weight:700;letter-spacing:.02em;color:#E79B72;}
.topbar-cta{
  display:inline-flex;align-items:center;justify-content:center;
  height:30px;padding:0 14px;border:1px solid rgba(246,242,234,.55);
  border-radius:var(--r2);color:var(--paper);font-size:12px;letter-spacing:.04em;
  white-space:nowrap;transition:background .18s ease,border-color .18s ease,color .18s ease;
}
.topbar-cta:hover{background:var(--paper);color:var(--green);border-color:var(--paper);}
.topbar-cta:active{transform:none;opacity:.85;}

/* 导航 */
.site-head{position:relative;z-index:40;}
.nav{
  background:var(--paper);border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease;
}
.nav.is-scrolled{box-shadow:0 8px 24px rgba(20,17,15,.06);}
.nav-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:24px;min-height:76px;
}
.logo{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.logo-mark{
  width:28px;height:28px;background:var(--copper);color:var(--paper);
  display:inline-flex;align-items:center;justify-content:center;
  font-family:var(--serif);font-weight:700;font-size:16px;border-radius:var(--r2);
  letter-spacing:0;
}
.logo-text{display:flex;flex-direction:column;line-height:1.2;}
.logo-line1{font-size:12px;letter-spacing:.08em;color:var(--muted);}
.logo-line2{font-size:17px;font-weight:700;color:var(--ink);letter-spacing:-.01em;}
.nav-links{display:flex;align-items:center;gap:28px;margin:0;}
.nav-links li{list-style:none;}
.nav-links a{
  position:relative;display:inline-block;font-size:15.5px;letter-spacing:.02em;
  color:var(--ink);padding:6px 0;
}
.nav-links a::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--copper);transition:width .18s ease;
}
.nav-links a:hover::after,.nav-links a:focus-visible::after{width:100%;}
.nav-links a.is-active{font-weight:700;}
.nav-links a.is-active::after{width:100%;}
.nav-actions{display:flex;align-items:center;gap:16px;flex:0 0 auto;}
.nav-mini{font-size:12px;color:var(--copper);letter-spacing:.04em;}
.nav-mini:hover{text-decoration:underline;}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);
  background:var(--card);border-radius:var(--r2);cursor:pointer;
  align-items:center;justify-content:center;flex-direction:column;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:1.5px;background:var(--ink);transition:transform .2s ease,opacity .2s ease;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(5.5px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-5.5px) rotate(-45deg);}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  height:44px;padding:0 22px;border-radius:var(--r2);
  font-size:15px;font-weight:600;letter-spacing:.02em;
  border:1px solid transparent;cursor:pointer;
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
  text-align:center;
}
.btn-primary{background:var(--ink);color:var(--paper);}
.btn-primary:hover{background:var(--copper);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-btn);}
.btn-primary:active{transform:translateY(0);box-shadow:none;}
.btn-copper{background:var(--copper);color:#fff;}
.btn-copper:hover{background:var(--ink);color:var(--paper);transform:translateY(-1px);box-shadow:var(--shadow-btn);}
.btn-copper:active{transform:translateY(0);box-shadow:none;}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink);}
.btn-ghost:hover{background:var(--ink);color:var(--paper);transform:translateY(-1px);box-shadow:var(--shadow-btn);}
.btn-ghost:active{transform:translateY(0);box-shadow:none;}
.btn-on-dark{background:transparent;border-color:rgba(246,242,234,.6);color:var(--paper);}
.btn-on-dark:hover{background:var(--paper);color:var(--green);border-color:var(--paper);}
.btn-sm{height:36px;padding:0 16px;font-size:13.5px;}
.btn:disabled,.btn.is-disabled{opacity:.45;transform:none;box-shadow:none;cursor:not-allowed;}

/* 抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(20,17,15,.45);
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;z-index:98;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);
  background:var(--card);border-left:1px solid var(--line);z-index:99;
  transform:translateX(100%);transition:transform .28s ease;
  display:flex;flex-direction:column;padding:20px;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px;}
.drawer-title{font-family:var(--serif);font-size:17px;font-weight:700;}
.drawer-close{
  width:40px;height:40px;border:1px solid var(--line);background:var(--paper);
  border-radius:var(--r2);font-size:18px;color:var(--ink);cursor:pointer;line-height:1;
}
.drawer-close:hover{border-color:var(--copper);color:var(--copper);}
.drawer-nav{display:flex;flex-direction:column;gap:2px;}
.drawer-nav a{
  padding:14px 4px;border-bottom:1px solid var(--line);
  font-size:15.5px;display:flex;justify-content:space-between;align-items:center;
}
.drawer-nav a.is-active{color:var(--copper);font-weight:700;}
.drawer-nav a:hover{padding-left:8px;color:var(--copper);}
.drawer-foot{margin-top:auto;padding-top:24px;}
.drawer-foot .btn{width:100%;}

/* 面包屑 */
.crumb-wrap{padding:22px 0 0;background:var(--paper);}
.crumb{font-size:13px;color:var(--muted);display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.crumb a{color:var(--copper);}
.crumb a:hover{text-decoration:underline;}
.crumb .sep{color:var(--line);}
.crumb .current{color:var(--muted);}

/* 页头 */
.page-head{padding:40px 0 72px;background:var(--paper);}
.page-head-copy{padding-right:28px;}
.page-head h1{margin-bottom:18px;}
.page-head h1 .kw{position:relative;display:inline;color:var(--ink);}
.page-head h1 .kw::after{
  content:"";position:absolute;left:0;right:0;bottom:2px;height:3px;
  background:var(--copper-soft);border-radius:1px;
}
.page-head .lead{font-size:17px;color:var(--ink-soft);max-width:520px;margin-bottom:0;}
.head-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 10px;
  font-size:12px;letter-spacing:.04em;border:1px solid var(--copper);
  border-radius:var(--r2);color:var(--copper);background:transparent;
}
.page-head-media{position:relative;}
.page-head-media .frame{
  position:relative;border-radius:var(--r4);overflow:hidden;
  border:1px solid var(--line);aspect-ratio:7/5;background:var(--card);
}
.page-head-media img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .5s ease;}
.page-head-media:hover img{transform:scale(1.02);}
.page-head-media .plate{
  position:absolute;left:16px;bottom:16px;background:rgba(20,17,15,.72);
  color:var(--paper);font-size:12px;letter-spacing:.04em;
  padding:6px 12px;border-radius:var(--r2);
}
.head-note{
  margin-top:16px;font-size:13px;color:var(--muted);
  border-left:3px solid var(--copper);padding-left:12px;
}

/* 对照表 */
.matrix-section{background:var(--card);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.matrix-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;flex-wrap:wrap;}
.legend{display:flex;gap:20px;flex-wrap:wrap;font-size:13px;color:var(--muted);}
.legend span{display:inline-flex;align-items:center;gap:8px;}
.dot{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--ink-soft);white-space:nowrap;}
.dot::before{
  content:"";width:9px;height:9px;border-radius:50%;
  background:var(--copper);flex:0 0 auto;
}
.dot.partial::before{background:transparent;border:1.5px solid var(--copper);width:9px;height:9px;}
.dot.no::before{background:#CFC8BB;}
.table-wrap{
  border:1px solid var(--line);border-radius:var(--r4);overflow:hidden;background:var(--card);
}
.table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;}
table.matrix{width:100%;border-collapse:collapse;min-width:720px;margin:0;}
table.matrix caption{
  caption-side:top;text-align:left;padding:16px 20px;font-size:13px;color:var(--muted);
  border-bottom:1px solid var(--line);background:var(--paper);
}
table.matrix th,table.matrix td{
  padding:16px 20px;text-align:left;font-size:14.5px;
  border-bottom:1px solid var(--line);vertical-align:middle;
  background:transparent;color:var(--ink);
}
table.matrix thead th{
  background:var(--green);color:var(--paper);font-size:13.5px;font-weight:600;
  letter-spacing:.04em;border-bottom:1px solid var(--green-deep);
}
table.matrix tbody tr:last-child td{border-bottom:0;}
table.matrix tbody tr:hover td{background:var(--paper);}
table.matrix td:first-child{font-weight:600;color:var(--ink);}
table.matrix td.memo{color:var(--muted);font-size:13.5px;}
.table-hint{display:none;font-size:13px;color:var(--muted);margin-top:10px;}

/* 卡片网格 2×2 */
.support-section{padding:96px 0;background:var(--paper);}
.card-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.info-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r4);
  padding:28px;display:flex;flex-direction:column;gap:14px;
  box-shadow:var(--shadow-card);
  transition:border-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.info-card:hover{border-color:var(--copper-soft);transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.icon-box{
  width:40px;height:40px;border:1px solid var(--line);border-radius:var(--r2);
  display:inline-flex;align-items:center;justify-content:center;color:var(--copper);
  background:var(--paper);
}
.icon-box svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;}
.info-card h3{font-size:20px;margin:0;}
.info-card p{margin:0;color:var(--muted);font-size:14.5px;line-height:1.8;}
.card-link{
  margin-top:auto;font-size:13.5px;color:var(--copper);font-weight:600;
  display:inline-flex;align-items:center;gap:6px;
}
.card-link::after{content:"→";transition:transform .18s ease;}
.info-card:hover .card-link::after{transform:translateX(4px);}
.card-link:hover{text-decoration:underline;}

/* 自检清单 */
.check-section{padding:0 0 96px;background:var(--paper);}
.check-inner{
  border-top:1px solid var(--line);padding-top:56px;
  display:grid;grid-template-columns:5fr 7fr;gap:48px;
}
.check-list{border-top:1px solid var(--line);}
.check-item{
  display:grid;grid-template-columns:52px 1fr;gap:16px;
  padding:22px 16px 22px 0;border-bottom:1px solid var(--line);
  position:relative;transition:background .18s ease;
}
.check-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;
  background:var(--copper);transform:scaleY(0);transform-origin:top;
  transition:transform .18s ease;
}
.check-item:hover{background:var(--card);}
.check-item:hover::before{transform:scaleY(1);}
.check-num{font-family:var(--mono);font-size:13px;color:var(--copper);letter-spacing:.06em;padding-top:4px;}
.check-body h3{font-size:16.5px;font-family:var(--sans);font-weight:700;margin-bottom:6px;letter-spacing:0;}
.check-body p{margin:0;font-size:14.5px;color:var(--muted);line-height:1.75;}

/* FAQ */
.faq-section{padding:96px 0;background:var(--card);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.faq-wrap{max-width:900px;margin:0 auto;}
.faq-head{text-align:center;margin-bottom:40px;}
.faq-head .sec-desc{margin:12px auto 0;}
details.faq-item{border-bottom:1px solid var(--line);position:relative;}
details.faq-item:first-of-type{border-top:1px solid var(--line);}
details.faq-item summary{
  list-style:none;cursor:pointer;padding:22px 48px 22px 20px;
  font-size:17px;font-weight:700;color:var(--ink);position:relative;
  transition:color .18s ease,background .18s ease;
}
details.faq-item summary::-webkit-details-marker{display:none;}
details.faq-item summary::after{
  content:"+";position:absolute;right:16px;top:50%;transform:translateY(-50%);
  width:26px;height:26px;border:1px solid var(--line);border-radius:var(--r2);
  display:flex;align-items:center;justify-content:center;
  font-size:16px;font-weight:400;color:var(--muted);background:var(--paper);
}
details.faq-item[open] summary::after{content:"−";color:var(--copper);border-color:var(--copper);}
details.faq-item[open] summary{color:var(--copper);}
details.faq-item[open]::before{
  content:"";position:absolute;left:0;top:8px;bottom:8px;width:3px;background:var(--copper);
}
details.faq-item summary:hover{background:var(--paper);}
.faq-answer{padding:0 20px 24px 20px;font-size:15px;line-height:1.85;color:var(--ink-soft);background:var(--paper);margin:0 0 0 0;}
.faq-answer p{margin:0;}

/* CTA 通栏 */
.cta-band{background:var(--green);color:var(--paper);padding:56px 0;}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;}
.cta-inner h2{color:var(--paper);font-size:clamp(22px,2.4vw,30px);margin-bottom:10px;}
.cta-inner p{margin:0;color:rgba(246,242,234,.78);font-size:14.5px;max-width:560px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* 页脚 */
.foot{background:var(--ink);color:var(--paper);padding:72px 0 0;}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:40px;padding-bottom:56px;}
.foot h4{
  font-family:var(--sans);font-size:13px;letter-spacing:.08em;color:rgba(246,242,234,.62);
  font-weight:600;margin-bottom:18px;
}
.foot-brand .fb-name{font-family:var(--serif);font-size:18px;font-weight:700;margin-bottom:12px;color:var(--paper);}
.foot-brand p{font-size:14px;color:rgba(246,242,234,.72);margin:0 0 16px;max-width:280px;line-height:1.8;}
.foot-domain{font-family:var(--mono);font-size:13px;color:rgba(246,242,234,.5);letter-spacing:.04em;}
.foot-links{display:flex;flex-direction:column;gap:10px;}
.foot-links a{font-size:14px;color:rgba(246,242,234,.78);}
.foot-links a:hover{color:var(--paper);text-decoration:underline;}
.foot-info{font-size:14px;color:rgba(246,242,234,.72);line-height:2;}
.foot-info b{color:var(--paper);font-weight:600;}
.foot-bottom{
  border-top:1px solid rgba(246,242,234,.18);padding:22px 0 28px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(246,242,234,.55);
}

/* 响应式 */
@media screen and (max-width:1023px){
  .grid-container{padding-left:24px;padding-right:24px;}
  .section,.support-section,.faq-section{padding:72px 0;}
  .check-section{padding-bottom:72px;}
  .nav-links{display:none;}
  .nav-actions{display:none;}
  .nav-toggle{display:flex;}
  .nav-inner{min-height:64px;}
  .page-head{padding:32px 0 56px;}
  .page-head-copy{padding-right:0;margin-bottom:32px;}
  .check-inner{grid-template-columns:1fr;gap:32px;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}
}
@media screen and (max-width:767px){
  .card-grid{grid-template-columns:1fr;}
  .cta-inner{align-items:flex-start;}
  .topbar-inner{flex-direction:column;align-items:flex-start;gap:8px;padding:10px 0;}
  .topbar{min-height:0;}
}
@media screen and (max-width:639px){
  .grid-container{padding-left:20px;padding-right:20px;}
  .section,.support-section,.faq-section{padding:48px 0;}
  .check-section{padding-bottom:48px;}
  .page-head{padding:24px 0 48px;}
  .page-head h1{font-size:clamp(26px,7.2vw,32px);}
  .logo-line1{display:none;}
  .logo-line2{font-size:15px;}
  .info-card{padding:22px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .foot{padding-top:48px;}
  .foot-grid{grid-template-columns:1fr;gap:28px;padding-bottom:40px;}
  .foot-bottom{flex-direction:column;gap:8px;}
  .table-hint{display:block;}
  .matrix-head{align-items:flex-start;}
  details.faq-item summary{font-size:15.5px;padding:18px 44px 18px 16px;}
  .check-item{grid-template-columns:40px 1fr;padding:18px 8px 18px 0;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
  .info-card:hover,.page-head-media:hover img,.btn:hover{transform:none !important;}
}