/* roulang page: index */
:root{
  --ink:#1B1E22;
  --ink-deep:#14161A;
  --paper:#F7F6F3;
  --white:#FFFFFF;
  --line:#E4E0D8;
  --line-soft:#EDE9E1;
  --text:#1B1E22;
  --text-mute:#5C5F63;
  --text-faint:#8A8681;
  --accent:#F0B429;
  --accent-hi:#FFC93C;
  --accent-soft:#FBF0D4;
  --teal:#3E5C58;
  --danger:#B4472F;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-card:0 1px 0 #E4E0D8, 0 8px 24px rgba(27,30,34,.06);
  --shadow-card-hover:0 1px 0 #E4E0D8, 0 14px 32px rgba(27,30,34,.10);
  --font-cn:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --ease:cubic-bezier(.2,.7,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16.5px;
  line-height:1.85;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;object-fit:cover}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4,p,figure,ul,ol,dl,dd{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.container{width:100%;max-width:1240px;margin-inline:auto;padding-inline:clamp(20px,4vw,40px)}

/* ---------- 顶部信息条 ---------- */
.topbar{
  background:var(--ink-deep);
  color:#A8A49C;
  font-size:13px;
  letter-spacing:.02em;
}
.topbar .container{
  min-height:36px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
}
.topbar strong{color:var(--accent);font-weight:700}
.topbar a{color:#F5F3EE;border-bottom:1px solid rgba(245,243,238,.35);padding-bottom:1px;transition:color .18s var(--ease)}
.topbar a:hover{color:var(--accent-hi)}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(247,246,243,.94);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
  transition:background .24s var(--ease),box-shadow .24s var(--ease);
}
.site-header.scrolled{
  background:rgba(247,246,243,.97);
  box-shadow:0 8px 20px rgba(27,30,34,.06);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:24px;
  min-height:84px;
  transition:min-height .24s var(--ease);
}
.site-header.scrolled .header-inner{min-height:68px}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.brand-mark{
  width:14px;height:34px;border-radius:3px;
  background:var(--accent);
  box-shadow:inset 0 -10px 0 rgba(27,30,34,.16);
}
.brand-text{display:flex;flex-direction:column;line-height:1.1}
.brand-main{font-size:22px;font-weight:900;letter-spacing:-.02em;color:var(--ink)}
.brand-sub{font-size:11.5px;letter-spacing:.18em;color:var(--text-faint);margin-top:4px}
.nav-chips{
  display:flex;
  align-items:center;
  gap:8px;
  overflow-x:auto;
  scrollbar-width:none;
  padding:6px 2px;
  border-left:1px solid var(--line);
  padding-left:24px;
  flex:1 1 auto;
}
.nav-chips::-webkit-scrollbar{display:none}
.chip{
  flex:0 0 auto;
  display:inline-flex;
  align-items:center;
  height:36px;
  padding:0 16px;
  border-radius:999px;
  border:1px solid var(--line);
  background:transparent;
  color:var(--text-mute);
  font-size:14px;
  font-weight:600;
  white-space:nowrap;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.chip:hover{color:var(--ink);border-color:#CFC9BC;background:#FFFFFF}
.chip.is-active{background:var(--ink);color:#F5F3EE;border-color:var(--ink)}
.chip.is-active:hover{background:#2A2E33;color:#FFF}
.header-cta{flex:0 0 auto;display:flex;align-items:center;gap:12px}

/* 按钮体系 */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  height:44px;
  padding:0 24px;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:700;
  border:1px solid transparent;
  cursor:pointer;
  transition:background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease);
}
.btn i{transition:transform .18s var(--ease)}
.btn:hover i{transform:translateX(4px)}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--accent);color:var(--ink);border-color:var(--accent)}
.btn-primary:hover{background:var(--accent-hi);border-color:var(--accent-hi);color:var(--ink)}
.btn-outline{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn-outline:hover{background:var(--ink);color:#F5F3EE}
.btn-quiet{background:transparent;color:var(--ink);border-color:transparent;padding-inline:6px}
.btn-quiet:hover{color:var(--ink);text-decoration:none}
.btn-quiet i{color:var(--accent)}
.btn-lg{height:52px;padding-inline:30px;font-size:16px}
.btn[disabled],.btn.is-disabled{opacity:.4;pointer-events:none}
.btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

/* 汉堡与移动导航 */
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--line);
  border-radius:var(--radius-btn);
  background:var(--white);
  padding:0;
  position:relative;
}
.nav-toggle span{
  position:absolute;left:12px;right:12px;height:2px;background:var(--ink);
  transition:transform .22s var(--ease),opacity .22s var(--ease);
}
.nav-toggle span:nth-child(1){top:17px}
.nav-toggle span:nth-child(2){top:25px}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(4px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){transform:translateY(-4px) rotate(-45deg)}
.mobile-nav{
  border-top:1px solid var(--line);
  background:var(--white);
  padding:16px 0 20px;
}
.mobile-nav .m-list{display:flex;flex-direction:column;gap:2px}
.mobile-nav .m-list a{
  display:flex;align-items:center;justify-content:space-between;
  padding:13px 4px;font-size:15px;font-weight:600;color:var(--ink);
  border-bottom:1px solid var(--line-soft);
}
.mobile-nav .m-list a i{color:var(--text-faint);font-size:12px}
.mobile-nav .m-list a.is-active{color:var(--ink)}
.mobile-nav .m-list a.is-active i{color:var(--accent)}
.mobile-nav .btn{width:100%;margin-top:16px}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  overflow:hidden;
  padding-block:clamp(48px,6vw,88px) clamp(40px,5vw,72px);
  background:
    radial-gradient(760px 380px at 82% -10%, rgba(240,180,41,.16), transparent 70%),
    var(--paper);
}
.hero::after{
  content:"";
  position:absolute;inset:0;
  background-image:radial-gradient(rgba(27,30,34,.05) 1px, transparent 1px);
  background-size:22px 22px;
  opacity:.5;
  pointer-events:none;
}
.hero .container{position:relative;z-index:1}
.hero-grid{
  display:grid;
  grid-template-columns:minmax(0,7fr) minmax(0,5fr);
  gap:clamp(32px,4vw,56px);
  align-items:center;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12.5px;letter-spacing:.08em;color:var(--text-mute);
  border:1px solid var(--line);
  background:var(--white);
  border-radius:999px;
  padding:6px 14px;
  margin-bottom:24px;
}
.eyebrow .dot{width:7px;height:7px;border-radius:2px;background:var(--accent)}
.hero h1{
  font-size:clamp(34px,5.2vw,62px);
  font-weight:900;
  line-height:1.08;
  letter-spacing:-.02em;
  color:var(--ink);
  margin-bottom:22px;
}
.hero h1 .hl{
  background-image:linear-gradient(transparent 64%, rgba(240,180,41,.55) 64%);
  background-repeat:no-repeat;
  padding-bottom:2px;
}
.hero-sub{
  font-size:17.5px;
  color:var(--text-mute);
  max-width:34em;
  margin-bottom:30px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:20px}
.hero-meta{
  font-size:13px;color:var(--text-faint);letter-spacing:.01em;
  font-variant-numeric:tabular-nums;
}
.hero-visual{position:relative}
.hero-visual figure{
  border-radius:var(--radius-img);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--line-soft);
  box-shadow:0 18px 40px rgba(27,30,34,.10);
  aspect-ratio:16/10;
}
.hero-visual figure img{width:100%;height:100%}
.float-card{
  position:absolute;
  left:-14px;
  bottom:22px;
  background:var(--ink);
  color:#F5F3EE;
  border-radius:12px;
  padding:12px 16px;
  font-size:12.5px;
  line-height:1.5;
  border:1px solid rgba(255,255,255,.12);
  box-shadow:0 14px 28px rgba(27,30,34,.20);
}
.float-card b{display:block;font-size:15px;color:var(--accent);letter-spacing:.01em}
.float-card span{color:#A8A49C}
.ruler{
  margin-top:16px;
  height:8px;
  background-image:repeating-linear-gradient(to right, var(--line) 0 1px, transparent 1px 12px);
  opacity:.9;
}

/* 承接条 */
.signal-bar{
  background:var(--ink-deep);
  color:#A8A49C;
  font-size:13px;
}
.signal-bar .container{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  min-height:46px;
  align-items:center;
  gap:8px;
}
.signal-bar span{display:flex;align-items:center;gap:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.signal-bar span::before{content:"";width:4px;height:14px;border-radius:1px;background:var(--accent);flex:0 0 auto}
.signal-bar b{color:#F5F3EE;font-weight:700}

/* ---------- 通用板块 ---------- */
.section{padding-block:clamp(56px,7vw,104px)}
.section-head{margin-bottom:clamp(28px,3.4vw,48px);max-width:760px}
.sec-label{
  display:flex;align-items:center;gap:10px;
  font-size:12.5px;font-weight:700;letter-spacing:.08em;
  color:var(--text-mute);text-transform:uppercase;
  margin-bottom:16px;
}
.sec-label::before{content:"";width:10px;height:10px;background:var(--accent);border-radius:2px}
.section h2{
  font-size:clamp(24px,3vw,34px);
  font-weight:800;
  line-height:1.2;
  letter-spacing:-.01em;
  margin-bottom:14px;
}
.section-head p{color:var(--text-mute);font-size:16px}

/* 价值四栏 */
.value-band{padding-block:clamp(40px,5vw,64px);background:var(--white);border-block:1px solid var(--line)}
.value-row{display:grid;grid-template-columns:repeat(4,minmax(0,1fr))}
.value-item{padding:8px 26px;border-left:1px solid var(--line)}
.value-item:first-child{border-left:0;padding-left:0}
.value-num{
  font-size:28px;font-weight:900;color:#CFC9BC;
  letter-spacing:-.02em;line-height:1;
  margin-bottom:14px;font-variant-numeric:tabular-nums;
}
.value-item h3{font-size:18px;font-weight:800;margin-bottom:8px}
.value-item p{font-size:14.5px;color:var(--text-mute);line-height:1.7}

/* 功能区轮播 */
.gallery-grid{
  display:grid;
  grid-template-columns:minmax(0,3fr) minmax(0,9fr);
  gap:clamp(24px,3vw,48px);
  align-items:start;
}
.gallery-intro p.lead{color:var(--text-mute);font-size:15.5px;margin-bottom:26px}
.round-nav{display:flex;gap:10px}
.round-btn{
  width:44px;height:44px;border-radius:50%;
  border:1px solid var(--line);
  background:var(--white);
  color:var(--ink);
  display:inline-flex;align-items:center;justify-content:center;
  transition:background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.round-btn:hover{background:var(--ink);color:#F5F3EE;border-color:var(--ink)}
.gallery-track{
  display:flex;
  gap:16px;
  overflow-x:auto;
  scroll-snap-type:x mandatory;
  scrollbar-width:none;
  padding-bottom:6px;
}
.gallery-track::-webkit-scrollbar{display:none}
.gallery-item{
  flex:0 0 calc(88% - 12px);
  scroll-snap-align:start;
  border-radius:var(--radius-img);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--white);
  box-shadow:var(--shadow-card);
}
.gallery-item img{width:100%;aspect-ratio:16/10;transition:transform .5s var(--ease)}
.gallery-item:hover img{transform:scale(1.03)}
.gallery-cap{
  padding:14px 18px 16px;
  border-top:1px solid var(--line-soft);
}
.gallery-cap b{display:block;font-size:15.5px;font-weight:800;margin-bottom:2px}
.gallery-cap span{font-size:13px;color:var(--text-faint)}
.gallery-dots{display:flex;gap:8px;align-items:center;margin-top:18px}
.gallery-dots button{
  width:8px;height:8px;border-radius:999px;border:0;
  background:#D8D3C8;padding:0;
  transition:width .22s var(--ease),background .22s var(--ease);
}
.gallery-dots button.on{width:20px;background:var(--accent)}

/* 系统要求 */
.req-wrap{background:var(--white);border-block:1px solid var(--line)}
.req-list{border-top:1px solid var(--line)}
.req-row{
  display:grid;
  grid-template-columns:minmax(0,4fr) minmax(0,8fr);
  gap:24px;
  align-items:center;
  min-height:56px;
  padding-block:14px;
  border-bottom:1px solid var(--line);
}
.req-key{
  display:flex;align-items:center;gap:12px;
  font-size:15px;font-weight:700;color:var(--ink);
}
.req-key::before{content:"";width:4px;height:18px;border-radius:1px;background:var(--accent);flex:0 0 auto}
.req-val{font-size:15px;color:var(--text-mute);font-variant-numeric:tabular-nums}
.req-val b{color:var(--ink);font-weight:700}

/* 评价墙 */
.quote-wall{columns:3;column-gap:24px}
.quote{
  break-inside:avoid;
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:22px 22px 18px;
  margin-bottom:24px;
  box-shadow:var(--shadow-card);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.quote:hover{transform:translateY(-2px);box-shadow:var(--shadow-card-hover)}
.quote-top{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.avatar{
  width:40px;height:40px;border-radius:50%;
  background:var(--accent-soft);
  color:var(--ink);
  display:flex;align-items:center;justify-content:center;
  font-weight:900;font-size:15px;flex:0 0 auto;
  border:1px solid var(--line);
}
.quote-top b{display:block;font-size:14.5px;font-weight:800;line-height:1.3}
.quote-top span{font-size:12px;color:var(--text-faint)}
.quote p{font-size:14.5px;color:var(--text-mute);line-height:1.8;margin-bottom:16px}
.score{display:flex;gap:4px;align-items:center}
.score i{width:10px;height:10px;background:#D8D3C8;border-radius:2px;display:inline-block}
.score i.on{background:var(--accent)}
.score em{font-style:normal;font-size:12px;color:var(--text-faint);margin-left:8px}

/* 下载区 */
.download-band{
  background:var(--ink-deep);
  color:#F5F3EE;
  padding-block:clamp(56px,7vw,96px);
}
.download-band h2{
  color:#F5F3EE;
  text-align:center;
  font-size:clamp(24px,3vw,34px);
  font-weight:800;
  margin-bottom:14px;
}
.download-band .dl-sub{
  text-align:center;
  color:#A8A49C;
  font-size:15.5px;
  max-width:640px;
  margin:0 auto clamp(28px,3.4vw,44px);
}
.dl-actions{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:14px;
  max-width:980px;
  margin-inline:auto;
}
.dl-btn{
  display:flex;
  align-items:center;
  gap:14px;
  padding:16px 18px;
  border:1px solid rgba(255,255,255,.14);
  border-radius:12px;
  background:transparent;
  color:#F5F3EE;
  transition:background .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease);
}
.dl-btn:hover{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.32);transform:translateY(-2px)}
.dl-btn i{font-size:22px;color:var(--accent);flex:0 0 auto}
.dl-btn b{display:block;font-size:15px;font-weight:700;line-height:1.3}
.dl-btn span{font-size:12px;color:#A8A49C;font-variant-numeric:tabular-nums}
.dl-note{
  text-align:center;
  font-size:12.5px;
  color:#8A8681;
  margin-top:26px;
  font-variant-numeric:tabular-nums;
  letter-spacing:.01em;
}

/* 最新信息 */
.post-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.post-card{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease);
  overflow:hidden;
}
.post-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-card-hover)}
.post-link{display:block;padding:22px 22px 20px;height:100%}
.post-cat{
  display:inline-flex;align-items:center;
  height:24px;padding:0 12px;
  border-radius:999px;
  background:var(--accent-soft);
  color:var(--ink);
  font-size:12px;font-weight:700;
  margin-bottom:14px;
}
.post-card h3{
  font-size:17.5px;
  font-weight:800;
  line-height:1.45;
  margin-bottom:10px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
  transition:color .18s var(--ease);
  position:relative;
}
.post-card:hover h3{text-decoration:underline;text-decoration-color:var(--accent);text-decoration-thickness:2px;text-underline-offset:4px}
.post-card p{
  font-size:15px;color:var(--text-mute);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  margin-bottom:18px;
}
.post-meta{
  display:flex;align-items:center;justify-content:space-between;
  font-size:12.5px;color:var(--text-faint);
  border-top:1px solid var(--line-soft);
  padding-top:12px;
  font-variant-numeric:tabular-nums;
}
.post-meta i{color:var(--accent)}
.empty-state{
  grid-column:1/-1;
  border:1px dashed #D8D3C8;
  border-radius:var(--radius-card);
  padding:44px 24px;
  text-align:center;
  color:var(--text-mute);
  background:rgba(255,255,255,.5);
}
.empty-state i{font-size:24px;color:#C6C0B3;display:block;margin-bottom:12px}
.empty-state p{font-size:14.5px}
.empty-state a{color:var(--ink);font-weight:700;border-bottom:1px solid var(--accent)}

/* FAQ */
.faq-wrap{background:var(--white);border-block:1px solid var(--line)}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  min-height:64px;
  padding:16px 0;
  font-size:16.5px;
  font-weight:700;
  color:var(--ink);
  transition:color .18s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:#000}
.faq-icon{position:relative;width:18px;height:18px;flex:0 0 auto}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--ink);border-radius:1px;
  transition:transform .22s var(--ease),opacity .22s var(--ease);
}
.faq-icon::before{left:0;right:0;top:8px;height:2px}
.faq-icon::after{top:0;bottom:0;left:8px;width:2px}
.faq-item[open] .faq-icon::after{transform:scaleY(0);opacity:0}
.faq-item[open] .faq-icon::before{background:var(--accent)}
.faq-body{padding:0 0 22px;max-width:62em}
.faq-body p{font-size:15.5px;color:var(--text-mute);line-height:1.85}

/* 页脚 */
.site-footer{background:var(--ink-deep);color:#A8A49C;padding-block:clamp(48px,6vw,72px) 0}
.footer-grid{
  display:grid;
  grid-template-columns:minmax(0,4fr) repeat(3,minmax(0,2.6fr));
  gap:clamp(24px,3vw,48px);
  padding-bottom:44px;
}
.footer-brand .brand-mark{height:30px}
.footer-brand .brand-main{color:#F5F3EE}
.footer-brand .brand-sub{color:#8A8681}
.footer-brand p{font-size:14px;color:#8A8681;line-height:1.8;margin-top:18px;max-width:26em}
.footer-col h4{
  font-size:12.5px;letter-spacing:.12em;text-transform:uppercase;
  color:#8A8681;font-weight:700;margin-bottom:18px;
}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a{font-size:14.5px;color:#D9D5CC;transition:color .18s var(--ease)}
.footer-col a:hover{color:var(--accent)}
.footer-col .contact-line{font-size:14px;color:#D9D5CC;font-variant-numeric:tabular-nums}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.10);
  padding-block:20px 26px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12.5px;color:#8A8681;
}
.footer-bottom .fb-links{display:flex;gap:18px;flex-wrap:wrap}
.footer-bottom a:hover{color:var(--accent)}

/* 进场动画 */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .32s var(--ease),transform .32s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .post-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .quote-wall{columns:2}
  .dl-actions{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:991.98px){
  .nav-chips{display:none}
  .header-cta .btn-primary{display:none}
  .nav-toggle{display:block;margin-left:auto}
  .hero-grid{grid-template-columns:minmax(0,1fr)}
  .hero-visual{order:2}
  .float-card{left:12px;bottom:12px}
  .signal-bar .container{grid-template-columns:repeat(2,minmax(0,1fr));padding-block:10px}
  .signal-bar span{font-size:12.5px}
  .value-row{grid-template-columns:repeat(2,minmax(0,1fr));row-gap:28px}
  .value-item{padding:0 22px}
  .value-item:nth-child(odd){border-left:0;padding-left:0}
  .value-item:nth-child(3),.value-item:nth-child(4){border-top:1px solid var(--line);padding-top:26px}
  .gallery-grid{grid-template-columns:minmax(0,1fr)}
  .gallery-item{flex:0 0 calc(92% - 8px)}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:767.98px){
  body{font-size:16px}
  .topbar .container{min-height:34px;font-size:12px}
  .topbar .tb-right{display:none}
  .header-inner{min-height:72px;gap:14px}
  .brand-main{font-size:20px}
  .hero{padding-block:36px 44px}
  .hero h1{font-size:clamp(30px,8vw,40px)}
  .hero-sub{font-size:16px}
  .req-row{grid-template-columns:minmax(0,1fr);gap:6px;padding-block:14px}
  .req-val{font-size:14.5px}
  .post-grid{grid-template-columns:minmax(0,1fr)}
  .quote-wall{columns:1}
  .dl-actions{grid-template-columns:minmax(0,1fr)}
  .section{padding-block:48px}
  .gallery-item{flex:0 0 calc(96% - 8px)}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:30px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:519.98px){
  .hero-actions .btn{width:100%}
  .value-row{grid-template-columns:minmax(0,1fr)}
  .value-item{padding:0 0 0 18px !important;border-left:1px solid var(--line) !important;border-top:0 !important;padding-top:0 !important}
  .value-item:first-child{padding-left:18px !important}
  .value-item + .value-item{margin-top:22px;border-top:1px solid var(--line) !important;padding-top:22px !important}
  .float-card{position:static;margin-top:12px;display:inline-block}
  .signal-bar .container{grid-template-columns:minmax(0,1fr);gap:8px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition-duration:.001ms !important;animation-duration:.001ms !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: article */
:root{
  --ink:#1B1E22; --ink-2:#14161A; --ink-soft:#2A2E33;
  --paper:#F7F6F3; --paper-2:#F2EFE9; --white:#FFFFFF;
  --line:#E4E0D8; --line-strong:#D8D3C8;
  --muted:#5C5F63; --weak:#8A8681;
  --signal:#F0B429; --signal-2:#FFC93C; --teal:#3E5C58;
  --danger:#B4472F;
  --radius:14px; --radius-sm:10px;
  --shadow-1:0 1px 0 #E4E0D8, 0 8px 24px rgba(27,30,34,.06);
  --shadow-2:0 1px 0 #E4E0D8, 0 14px 34px rgba(27,30,34,.11);
  --container:1240px;
  --ease:cubic-bezier(.2,.7,.2,1);
  --pad-y:clamp(56px, 7vw, 96px);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;line-height:1.85;font-feature-settings:"tnum";
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .18s var(--ease)}
a:hover{color:var(--ink)}
button,input,textarea,select{font-family:inherit;font-size:inherit;color:inherit}
ul,ol{margin:0;padding:0}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--signal);outline-offset:2px;border-radius:4px}
::selection{background:var(--signal);color:var(--ink-2)}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 clamp(20px,4vw,40px)}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* ============ Header ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(247,246,243,.94);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s var(--ease),padding .25s var(--ease);
}
.site-header.is-stuck{box-shadow:0 8px 26px rgba(27,30,34,.07)}
.header-inner{display:flex;align-items:center;gap:24px;padding:16px 0;transition:padding .25s var(--ease)}
.site-header.is-stuck .header-inner{padding:10px 0}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.brand-mark{
  width:15px;height:15px;border-radius:3px;background:var(--signal);
  box-shadow:4px 4px 0 0 var(--ink);flex:0 0 auto;margin-right:2px;
  transition:box-shadow .22s var(--ease),transform .22s var(--ease);
}
.brand:hover .brand-mark{box-shadow:6px 6px 0 0 var(--ink);transform:translate(-1px,-1px)}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-main{font-size:20px;font-weight:900;letter-spacing:-.01em;color:var(--ink)}
.brand-sub{font-size:11px;letter-spacing:.16em;color:var(--weak);font-weight:600;margin-top:2px}
.nav-chips{
  display:flex;align-items:center;gap:8px;flex:1 1 auto;
  overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;
  padding:2px 0;
}
.nav-chips::-webkit-scrollbar{display:none}
.chip{
  display:inline-flex;align-items:center;white-space:nowrap;
  padding:8px 16px;border-radius:999px;border:1px solid var(--line);
  font-size:14px;font-weight:600;color:var(--muted);background:transparent;
  transition:all .2s var(--ease);
}
.chip:hover{border-color:var(--ink);color:var(--ink);background:var(--white);transform:translateY(-1px)}
.chip.is-active{background:var(--ink);border-color:var(--ink);color:#fff}
.nav-cta{
  display:inline-flex;align-items:center;gap:8px;flex:0 0 auto;
  height:44px;padding:0 22px;border-radius:var(--radius-sm);
  background:var(--signal);color:var(--ink-2);font-size:14px;font-weight:800;
  transition:all .18s var(--ease);border:1px solid var(--signal);
}
.nav-cta:hover{background:var(--signal-2);border-color:var(--signal-2);color:var(--ink-2)}
.nav-cta:active{transform:translateY(1px)}
.nav-cta i{font-size:13px;transition:transform .18s var(--ease)}
.nav-cta:hover i{transform:translateY(2px)}

/* ============ Breadcrumb ============ */
.crumb-bar{padding:26px 0 0}
.crumbs{list-style:none;display:flex;flex-wrap:wrap;align-items:center;gap:6px;font-size:13px;color:var(--weak)}
.crumbs li{display:inline-flex;align-items:center;gap:6px}
.crumbs li+li::before{content:"/";color:var(--line-strong);margin-right:2px}
.crumbs a{color:var(--weak)}
.crumbs a:hover{color:var(--ink)}
.crumbs .current{color:var(--muted);max-width:340px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ============ Article head ============ */
.post-head{padding:26px 0 34px;border-bottom:1px solid var(--line)}
.post-head-inner{max-width:900px}
.post-chip{
  display:inline-flex;align-items:center;gap:7px;
  height:26px;padding:0 14px;border-radius:999px;
  background:var(--signal);color:var(--ink-2);
  font-size:12px;font-weight:800;letter-spacing:.04em;
}
.post-title{
  font-size:clamp(28px,4.2vw,46px);
  font-weight:900;line-height:1.18;letter-spacing:-.02em;
  margin:20px 0 18px;color:var(--ink);
  overflow-wrap:break-word;
}
.post-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 20px;font-size:13px;color:var(--weak)}
.post-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--line-strong)}
.post-meta i{font-size:12px;margin-right:5px;color:var(--weak)}
.post-cover{
  margin-top:30px;border-radius:var(--radius);overflow:hidden;
  border:1px solid var(--line);background:var(--paper-2);
  aspect-ratio:16/8;
}
.post-cover img{width:100%;height:100%;object-fit:cover}

/* ============ Layout ============ */
.post-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 300px;
  gap:clamp(32px,4vw,64px);align-items:start;
  padding:var(--pad-y) 0;
}
.article-body{
  max-width:780px;font-size:17px;line-height:1.92;color:var(--ink);
  overflow-wrap:break-word;
}
.article-body>*+*{margin-top:1.15em}
.article-body p{margin:0 0 1.2em;color:var(--ink-soft)}
.article-body h2{
  font-size:clamp(21px,2.4vw,26px);font-weight:800;line-height:1.4;
  margin:2.1em 0 .85em;padding-left:14px;border-left:4px solid var(--signal);
  color:var(--ink);
}
.article-body h3{
  font-size:19px;font-weight:700;line-height:1.5;margin:1.7em 0 .7em;color:var(--ink);
}
.article-body h4{font-size:17px;font-weight:700;margin:1.4em 0 .6em;color:var(--ink)}
.article-body ul,.article-body ol{margin:0 0 1.3em;padding-left:1.4em}
.article-body li{margin:.45em 0;color:var(--ink-soft);line-height:1.85}
.article-body li::marker{color:var(--signal)}
.article-body blockquote{
  margin:1.6em 0;padding:16px 22px;background:var(--paper-2);
  border-left:3px solid var(--signal);border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  color:var(--muted);font-size:16px;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:12px;margin:1.6em 0;width:100%;height:auto}
.article-body a{color:var(--teal);border-bottom:1px solid rgba(62,92,88,.35)}
.article-body a:hover{color:var(--ink);border-bottom-color:var(--ink)}
.article-body code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:.9em;background:var(--paper-2);border:1px solid var(--line);
  padding:1px 6px;border-radius:5px;color:var(--teal);
}
.article-body pre{
  background:var(--ink-2);color:#EDE9E1;padding:20px 22px;border-radius:12px;
  overflow-x:auto;font-size:14px;line-height:1.7;margin:1.6em 0;
}
.article-body pre code{background:none;border:0;color:inherit;padding:0}
.article-body table{
  width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15px;
  display:block;overflow-x:auto;white-space:nowrap;
}
.article-body th,.article-body td{border-bottom:1px solid var(--line);padding:12px 16px;text-align:left}
.article-body th{background:var(--paper-2);font-weight:700;color:var(--ink)}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2.4em 0}

/* 空态 */
.empty-state{
  border:1px dashed var(--line-strong);border-radius:var(--radius);
  padding:56px 28px;text-align:center;background:var(--white);
}
.empty-state i{font-size:30px;color:var(--weak);display:block;margin-bottom:16px}
.empty-state h2{font-size:20px;font-weight:800;margin-bottom:10px;padding:0;border:0}
.empty-state p{color:var(--muted);font-size:15px;margin-bottom:22px}

/* ============ Sidebar ============ */
.sidebar{position:sticky;top:96px;display:grid;gap:20px}
.side-card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
  padding:22px 22px 8px;box-shadow:var(--shadow-1);
}
.side-card h3{
  font-size:15px;font-weight:800;color:var(--ink);margin:0 0 6px;
  display:flex;align-items:center;gap:8px;
}
.side-card h3::before{content:"";width:8px;height:8px;border-radius:2px;background:var(--signal);display:inline-block}
.side-list{list-style:none;margin:0;padding:0}
.side-list li+li{border-top:1px solid var(--line)}
.side-list a{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:13px 0;font-size:14px;color:var(--muted);line-height:1.6;
}
.side-list a span{flex:1 1 auto}
.side-list a i{font-size:11px;color:var(--line-strong);transition:all .2s var(--ease)}
.side-list a:hover{color:var(--ink)}
.side-list a:hover i{color:var(--signal);transform:translateX(3px)}
.side-card.dark{background:var(--ink-2);border-color:rgba(255,255,255,.1);padding:26px 22px;box-shadow:none}
.side-card.dark h3{color:#F5F3EE}
.side-card.dark p{color:#A8A49C;font-size:13.5px;line-height:1.8;margin:8px 0 18px}
.side-card.dark .btn-solid{width:100%;justify-content:center}

/* ============ Buttons ============ */
.btn-solid,.btn-line,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  height:46px;padding:0 24px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:700;cursor:pointer;border:1px solid transparent;
  transition:all .18s var(--ease);
}
.btn-solid{background:var(--ink);color:#fff;border-color:var(--ink)}
.btn-solid:hover{background:var(--ink-2);color:var(--signal-2);border-color:var(--ink-2)}
.btn-solid i{transition:transform .18s var(--ease)}
.btn-solid:hover i{transform:translateX(4px)}
.btn-line{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn-line:hover{background:var(--ink);color:#fff}
.btn-ghost{background:transparent;color:var(--muted);padding:0 4px;height:auto}
.btn-ghost:hover{color:var(--ink)}
.btn-ghost i{transition:transform .18s var(--ease)}
.btn-ghost:hover i{transform:translateX(4px)}
.btn-solid:active,.btn-line:active{transform:translateY(1px)}

/* ============ Related ============ */
.related{padding:0 0 var(--pad-y)}
.sec-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:20px;flex-wrap:wrap;margin-bottom:32px;
  padding-bottom:20px;border-bottom:1px solid var(--line);
}
.sec-tag{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:800;letter-spacing:.1em;color:var(--muted);
  margin-bottom:10px;
}
.sec-tag::before{content:"";width:9px;height:9px;background:var(--signal);border-radius:2px;display:inline-block}
.sec-title{font-size:clamp(22px,2.6vw,30px);font-weight:800;line-height:1.25;letter-spacing:-.01em}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.rel-card{
  display:flex;flex-direction:column;background:var(--white);
  border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  box-shadow:var(--shadow-1);transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.rel-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2)}
.rel-thumb{aspect-ratio:16/10;overflow:hidden;background:var(--paper-2)}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.rel-card:hover .rel-thumb img{transform:scale(1.04)}
.rel-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto}
.rel-badge{
  align-self:flex-start;height:23px;padding:0 11px;border-radius:999px;
  background:var(--paper-2);color:var(--ink);
  font-size:11.5px;font-weight:700;display:inline-flex;align-items:center;letter-spacing:.04em;
}
.rel-title{font-size:16.5px;font-weight:800;line-height:1.5;color:var(--ink)}
.rel-desc{font-size:14px;color:var(--muted);line-height:1.75}
.rel-foot{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;
  font-size:12.5px;color:var(--weak);
}
.rel-foot i{transition:transform .18s var(--ease)}
.rel-card:hover .rel-foot i{transform:translateX(3px);color:var(--signal)}

/* ============ CTA band ============ */
.cta-band{background:var(--ink-2);color:#F5F3EE;padding:clamp(44px,5vw,68px) 0;position:relative;overflow:hidden}
.cta-band::after{
  content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;
  background:radial-gradient(circle,rgba(240,180,41,.18),transparent 68%);pointer-events:none;
}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;position:relative;z-index:1}
.cta-text h2{font-size:clamp(21px,2.6vw,29px);font-weight:900;line-height:1.3;letter-spacing:-.01em}
.cta-text p{color:#A8A49C;font-size:14.5px;margin-top:10px;max-width:520px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}
.cta-actions .btn-solid{background:var(--signal);border-color:var(--signal);color:var(--ink-2)}
.cta-actions .btn-solid:hover{background:var(--signal-2);border-color:var(--signal-2);color:var(--ink-2)}
.cta-actions .btn-line{border-color:rgba(255,255,255,.35);color:#F5F3EE}
.cta-actions .btn-line:hover{background:#F5F3EE;color:var(--ink-2);border-color:#F5F3EE}

/* ============ Footer ============ */
.site-footer{background:var(--ink-2);color:#F5F3EE;padding:64px 0 28px;border-top:1px solid rgba(255,255,255,.08)}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.25fr;gap:clamp(24px,3vw,44px)}
.footer-brand .brand-main{color:#F5F3EE}
.footer-brand .brand-sub{color:#8A8681}
.footer-brand .brand-mark{box-shadow:4px 4px 0 0 rgba(245,243,238,.35)}
.footer-brand p{color:#A8A49C;font-size:14px;line-height:1.85;margin-top:18px;max-width:340px}
.footer-col h4{font-size:12.5px;font-weight:800;letter-spacing:.12em;color:#8A8681;margin:0 0 16px}
.footer-col ul{list-style:none;display:grid;gap:10px;margin:0;padding:0}
.footer-col a,.contact-line{font-size:14px;color:#C9C4BA;line-height:1.7}
.footer-col a:hover{color:var(--signal)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);margin-top:48px;padding-top:20px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#8A8681;
}
.fb-links{display:flex;gap:20px;flex-wrap:wrap}
.fb-links a{color:#8A8681}
.fb-links a:hover{color:var(--signal)}

/* ============ Reveal ============ */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .32s var(--ease),transform .32s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ============ Responsive ============ */
@media (max-width:1199.98px){
  .post-layout{grid-template-columns:minmax(0,1fr) 272px;gap:36px}
  .related-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
}
@media (max-width:991.98px){
  .post-layout{grid-template-columns:minmax(0,1fr)}
  .sidebar{position:static;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
  .header-inner{flex-wrap:wrap;gap:12px}
  .nav-chips{order:3;width:100%;flex:1 0 100%;padding-bottom:4px}
  .nav-cta{margin-left:auto}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr}
  .post-cover{aspect-ratio:16/9}
}
@media (max-width:767.98px){
  .site-header{position:static}
  .post-title{font-size:clamp(24px,6.4vw,32px);line-height:1.22}
  .post-meta{gap:8px 14px;font-size:12.5px}
  .sidebar{grid-template-columns:1fr}
  .related-grid{grid-template-columns:1fr}
  .crumbs .current{max-width:180px}
  .article-body{font-size:16px;line-height:1.9}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .cta-actions{width:100%}
  .cta-actions .btn-solid,.cta-actions .btn-line{flex:1 1 auto}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px}
}
@media (max-width:575.98px){
  .brand-main{font-size:18px}
  .brand-sub{font-size:10px;letter-spacing:.13em}
  .nav-cta{height:40px;padding:0 16px;font-size:13px}
  .chip{padding:7px 13px;font-size:13px}
  .post-head{padding:20px 0 26px}
  .post-cover{margin-top:22px;aspect-ratio:16/10}
  .rel-body{padding:18px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category1 */
:root{
  --ink:#1B1E22;
  --ink-2:#14161A;
  --ink-3:#2A2E34;
  --accent:#F0B429;
  --accent-hi:#FFC93C;
  --teal:#3E5C58;
  --paper:#F7F6F3;
  --paper-2:#F2EFE9;
  --white:#FFFFFF;
  --line:#E4E0D8;
  --line-soft:#EDE9E1;
  --text-2:#5C5F63;
  --text-3:#8A8681;
  --on-dark:#F5F3EE;
  --on-dark-2:#A8A49C;
  --danger:#B4472F;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --shadow-1:0 1px 0 #E4E0D8, 0 8px 24px rgba(27,30,34,.06);
  --shadow-2:0 1px 0 #E4E0D8, 0 16px 36px rgba(27,30,34,.10);
  --maxw:1240px;
  --ease:cubic-bezier(.2,.7,.2,1);
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  background:var(--paper);
  color:var(--ink);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .18s var(--ease);}
a:hover{color:inherit;}
button{font-family:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 clamp(20px,4vw,40px);}
.section{padding:clamp(52px,7vw,96px) 0;}
section[id],div[id]{scroll-margin-top:108px;}

/* ---------- 按钮 ---------- */
.btn-rl{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  height:44px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:700;line-height:1;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;
  transition:background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease);
  white-space:nowrap;
}
.btn-rl:active{transform:translateY(1px);}
.btn-rl .arrow{transition:transform .18s var(--ease);display:inline-block;}
.btn-rl:hover .arrow{transform:translateX(4px);}
.btn-primary-rl{background:var(--ink);color:var(--accent);border-color:var(--ink);}
.btn-primary-rl:hover{background:var(--ink-3);color:var(--accent-hi);border-color:var(--ink-3);}
.btn-ghost-rl{background:transparent;color:var(--ink);border-color:var(--ink);}
.btn-ghost-rl:hover{background:var(--ink);color:var(--on-dark);}
.btn-accent-rl{background:var(--accent);color:var(--ink);border-color:var(--accent);}
.btn-accent-rl:hover{background:var(--accent-hi);border-color:var(--accent-hi);}
.btn-rl[disabled],.btn-rl.is-disabled{opacity:.4;pointer-events:none;}
.btn-lg-rl{height:52px;padding:0 30px;font-size:16px;}
.btn-sm-rl{height:40px;padding:0 18px;font-size:14px;}

/* ---------- 品牌标识 ---------- */
.brand{display:inline-flex;align-items:center;gap:12px;flex-shrink:0;}
.brand-mark{
  width:18px;height:18px;border-radius:4px;background:var(--accent);
  position:relative;flex-shrink:0;box-shadow:inset 0 0 0 1px rgba(27,30,34,.2);
}
.brand-mark::after{content:"";position:absolute;inset:5px;background:var(--ink);border-radius:1px;}
.brand-text{display:flex;flex-direction:column;line-height:1.1;}
.brand-main{font-size:18px;font-weight:900;letter-spacing:.01em;color:var(--ink);}
.brand-sub{font-size:10.5px;letter-spacing:.18em;color:var(--text-3);margin-top:4px;}
.brand:hover .brand-main{color:var(--ink);}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(247,246,243,.94);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .22s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 6px 20px rgba(27,30,34,.07);}
.header-inner{
  display:flex;align-items:center;gap:24px;
  height:84px;transition:height .22s var(--ease);
}
.site-header.is-scrolled .header-inner{height:68px;}
.nav-chips{
  display:flex;align-items:center;gap:8px;
  border-left:1px solid var(--line);
  padding-left:24px;
  overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;
  flex:1 1 auto;
}
.nav-chips::-webkit-scrollbar{display:none;}
.chip{
  display:inline-flex;align-items:center;gap:7px;
  padding:8px 16px;border-radius:999px;
  border:1px solid var(--line);background:transparent;
  font-size:14px;color:var(--text-2);white-space:nowrap;
  transition:color .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease);
}
.chip:hover{color:var(--ink);border-color:#CFC9BE;background:var(--white);}
.chip.is-active{background:var(--ink);color:#fff;border-color:var(--ink);}
.chip.is-active::before{
  content:"";width:6px;height:6px;border-radius:1px;background:var(--accent);display:inline-block;
}
.header-cta{flex-shrink:0;margin-left:8px;}
.mobile-toggle{
  display:none;align-items:center;justify-content:center;
  width:44px;height:44px;border:1px solid var(--line);border-radius:var(--r-btn);
  background:var(--white);cursor:pointer;
  flex-direction:column;gap:5px;flex-shrink:0;
}
.mobile-toggle span{display:block;width:18px;height:2px;background:var(--ink);transition:transform .2s var(--ease);}
.mobile-drawer{border-top:1px solid var(--line);background:var(--paper);}
.drawer-inner{padding-top:16px;padding-bottom:20px;display:flex;flex-direction:column;gap:14px;}
.drawer-chips{display:flex;flex-wrap:wrap;gap:8px;}

/* ---------- 面包屑 ---------- */
.crumbs{padding:22px 0 0;}
.crumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);}
.crumbs li{display:flex;align-items:center;gap:8px;}
.crumbs li::after{content:"/";color:#C6C1B6;}
.crumbs li:last-child::after{content:"";}
.crumbs a:hover{color:var(--ink);}
.crumbs .current{color:var(--text-2);}

/* ---------- 页头 ---------- */
.page-head{padding:clamp(28px,4vw,44px) 0 clamp(36px,5vw,60px);}
.head-grid{display:grid;grid-template-columns:1.32fr 1fr;gap:clamp(28px,4vw,56px);align-items:center;}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:12.5px;letter-spacing:.1em;color:var(--text-3);margin-bottom:20px;}
.eyebrow::before{content:"";width:9px;height:9px;background:var(--accent);border-radius:2px;display:inline-block;}
.page-head h1{
  font-size:clamp(32px,4.8vw,56px);
  font-weight:900;line-height:1.12;letter-spacing:-.02em;
  margin-bottom:20px;color:var(--ink);
}
.page-head h1 .hl{
  position:relative;display:inline-block;white-space:nowrap;
}
.page-head h1 .hl::after{
  content:"";position:absolute;left:0;right:0;bottom:.06em;height:.18em;
  background:var(--accent);opacity:.55;border-radius:2px;z-index:-1;
}
.page-head h1 .sep{color:var(--text-3);font-weight:400;margin:0 .12em;}
.lead{font-size:15.5px;line-height:1.95;color:var(--text-2);max-width:36em;margin-bottom:26px;}
.head-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:20px;}
.head-meta{font-size:13px;color:var(--text-3);letter-spacing:.02em;font-variant-numeric:tabular-nums;}
.head-meta span + span::before{content:"·";margin:0 8px;color:#C6C1B6;}

.hero-figure{position:relative;}
.hero-figure .frame{
  border:1px solid var(--line);border-radius:var(--r-img);overflow:hidden;
  background:var(--line-soft);box-shadow:var(--shadow-1);
  aspect-ratio:16/10;
}
.hero-figure img{width:100%;height:100%;object-fit:cover;}
.float-card{
  position:absolute;left:-18px;bottom:18px;
  background:var(--white);border:1px solid var(--line);border-radius:12px;
  padding:14px 18px;box-shadow:0 10px 26px rgba(27,30,34,.12);
  display:flex;align-items:center;gap:12px;
}
.float-card .dot{width:8px;height:8px;border-radius:50%;background:var(--teal);flex-shrink:0;}
.float-card strong{font-size:14px;font-weight:800;display:block;line-height:1.4;}
.float-card span{font-size:12px;color:var(--text-3);line-height:1.4;display:block;}

/* ---------- 深色信息条 ---------- */
.spec-strip{background:var(--ink-2);color:var(--on-dark-2);}
.strip-inner{
  display:grid;grid-template-columns:repeat(4,1fr);gap:16px;
  min-height:46px;align-items:center;padding:10px 0;
  font-size:13px;letter-spacing:.02em;font-variant-numeric:tabular-nums;
}
.strip-inner div{display:flex;align-items:center;gap:9px;}
.strip-inner div::before{content:"";width:3px;height:12px;background:var(--accent);border-radius:1px;flex-shrink:0;}
.strip-inner div + div{border-left:1px solid rgba(255,255,255,.10);padding-left:16px;}

/* ---------- 区块标题 ---------- */
.section-head{margin-bottom:clamp(28px,3.5vw,44px);max-width:52em;}
.section-label{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12.5px;letter-spacing:.1em;color:var(--text-3);margin-bottom:14px;
}
.section-label::before{content:"";width:9px;height:9px;background:var(--accent);border-radius:2px;}
.section-head h2{
  font-size:clamp(24px,3vw,34px);font-weight:800;line-height:1.24;letter-spacing:-.01em;margin-bottom:12px;
}
.section-head p{font-size:15.5px;color:var(--text-2);line-height:1.9;max-width:44em;}

/* ---------- 索引区 ---------- */
.index-wrap{display:grid;grid-template-columns:4fr 8fr;gap:clamp(28px,4vw,56px);align-items:start;}
.toc{position:sticky;top:104px;align-self:start;}
.toc-title{font-size:12.5px;letter-spacing:.12em;color:var(--text-3);margin-bottom:14px;padding-bottom:12px;border-bottom:1px solid var(--line);}
.toc ol{display:flex;flex-direction:column;}
.toc a{
  display:flex;align-items:baseline;gap:12px;
  padding:11px 0 11px 14px;margin-left:-15px;
  border-left:2px solid transparent;
  font-size:14.5px;color:var(--text-2);line-height:1.6;
  transition:color .18s var(--ease),border-color .18s var(--ease),padding-left .18s var(--ease);
}
.toc a .toc-num{font-size:12px;letter-spacing:.1em;color:var(--text-3);font-variant-numeric:tabular-nums;flex-shrink:0;}
.toc a:hover{color:var(--ink);}
.toc a.is-active{color:var(--ink);font-weight:700;border-left-color:var(--accent);}
.toc a.is-active .toc-num{color:var(--teal);}
.toc-note{margin-top:22px;padding:16px;border:1px dashed #D8D3C8;border-radius:12px;font-size:13px;color:var(--text-3);line-height:1.8;}

.index-list{display:flex;flex-direction:column;}
.index-item{
  display:grid;grid-template-columns:56px 1fr 28px;gap:18px;align-items:start;
  padding:26px 16px 26px 0;border-top:1px solid var(--line);
  transition:background .2s var(--ease),padding-left .2s var(--ease);
  border-radius:0;
}
.index-list .index-item:last-child{border-bottom:1px solid var(--line);}
.index-item:hover{background:rgba(255,255,255,.66);padding-left:12px;}
.ix-num{font-size:13px;font-weight:700;letter-spacing:.12em;color:var(--text-3);padding-top:7px;font-variant-numeric:tabular-nums;}
.ix-title{font-size:19px;font-weight:700;line-height:1.5;margin-bottom:8px;letter-spacing:0;}
.ix-title .tick{display:inline-block;width:0;height:2px;background:var(--accent);vertical-align:middle;transition:width .22s var(--ease);margin-right:0;}
.index-item:hover .ix-title .tick{width:18px;margin-right:8px;}
.ix-desc{font-size:15px;color:var(--text-2);line-height:1.88;}
.ix-arrow{
  align-self:center;color:#C2BCB0;font-size:18px;line-height:1;
  transition:transform .2s var(--ease),color .2s var(--ease);
}
.index-item:hover .ix-arrow{transform:translateX(4px);color:var(--ink);}

/* ---------- 平台下载 ---------- */
.platform-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.platform-card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px 26px;box-shadow:var(--shadow-1);
  display:flex;flex-direction:column;gap:14px;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.platform-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);}
.pc-head{display:flex;align-items:center;justify-content:space-between;gap:12px;}
.pc-name{font-size:20px;font-weight:800;letter-spacing:-.01em;}
.badge-rl{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  background:var(--paper-2);color:var(--ink);font-size:12px;font-weight:600;letter-spacing:.02em;
}
.badge-teal{background:transparent;border:1px solid var(--teal);color:var(--teal);}
.pc-meta{font-size:13px;color:var(--text-3);font-variant-numeric:tabular-nums;letter-spacing:.02em;}
.pc-list{display:flex;flex-direction:column;gap:8px;font-size:14.5px;color:var(--text-2);line-height:1.8;margin-bottom:4px;}
.pc-list li{padding-left:16px;position:relative;}
.pc-list li::before{content:"";position:absolute;left:0;top:.78em;width:6px;height:6px;border-radius:1px;background:var(--line);}
.platform-card .btn-rl{margin-top:auto;width:100%;}

/* ---------- FAQ ---------- */
.faq-accordion .accordion-item{background:transparent;border:0;border-top:1px solid var(--line);border-radius:0;}
.faq-accordion .accordion-item:last-child{border-bottom:1px solid var(--line);}
.faq-accordion .accordion-header{margin:0;}
.faq-accordion .accordion-button{
  background:transparent;border:0;box-shadow:none;border-radius:0;
  display:flex;align-items:baseline;gap:16px;
  padding:22px 52px 22px 0;position:relative;
  font-size:17px;font-weight:700;color:var(--ink);line-height:1.6;
  transition:color .18s var(--ease);
}
.faq-accordion .accordion-button:not(.collapsed){color:var(--ink);background:transparent;box-shadow:none;}
.faq-accordion .accordion-button:hover{color:var(--teal);}
.faq-accordion .accordion-button::after{display:none;}
.faq-accordion .accordion-button:focus{box-shadow:none;outline:2px solid var(--accent);outline-offset:-2px;}
.faq-index{font-size:12px;letter-spacing:.12em;color:var(--text-3);font-weight:700;flex-shrink:0;font-variant-numeric:tabular-nums;}
.faq-icon{position:absolute;right:6px;top:50%;transform:translateY(-50%);width:22px;height:22px;}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--ink);border-radius:1px;transition:transform .22s var(--ease),opacity .22s var(--ease);
}
.faq-icon::before{left:5px;top:10px;width:12px;height:2px;}
.faq-icon::after{left:10px;top:5px;width:2px;height:12px;}
.accordion-button:not(.collapsed) .faq-icon::after{transform:rotate(90deg);opacity:0;}
.faq-accordion .accordion-body{
  padding:0 52px 26px 44px;font-size:15.5px;color:var(--text-2);line-height:1.95;
}

/* ---------- 深色 CTA 带 ---------- */
.cta-band{
  background:var(--ink-2);color:var(--on-dark);
  border-radius:var(--r-card);
  padding:clamp(30px,4.2vw,48px);
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  border:1px solid rgba(255,255,255,.08);
}
.cta-band h2{font-size:clamp(21px,2.6vw,28px);font-weight:800;line-height:1.35;margin-bottom:10px;color:var(--on-dark);}
.cta-band p{font-size:14.5px;color:var(--on-dark-2);line-height:1.85;max-width:34em;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}
.cta-band .btn-ghost-on-dark{background:transparent;color:var(--on-dark);border-color:rgba(255,255,255,.26);}
.cta-band .btn-ghost-on-dark:hover{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.5);color:#fff;}
.cta-check{
  margin-top:18px;font-size:12.5px;color:var(--on-dark-2);letter-spacing:.02em;font-variant-numeric:tabular-nums;
}
.cta-check span + span::before{content:"·";margin:0 8px;color:rgba(255,255,255,.28);}

.back-home{display:flex;justify-content:center;padding-top:clamp(28px,3vw,40px);}
.back-link{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--text-2);font-weight:700;}
.back-link .arrow{transition:transform .18s var(--ease);}
.back-link:hover{color:var(--ink);}
.back-link:hover .arrow{transform:translateX(-4px);}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink-2);color:var(--on-dark-2);padding:clamp(52px,6vw,80px) 0 28px;margin-top:clamp(48px,6vw,80px);}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:clamp(24px,3vw,44px);padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.10);}
.footer-brand .brand-mark{background:var(--accent);}
.footer-brand .brand-main{color:var(--on-dark);}
.footer-brand .brand-sub{color:rgba(245,243,238,.5);}
.footer-brand p{margin-top:18px;font-size:14px;line-height:1.9;color:var(--on-dark-2);max-width:26em;}
.footer-col h4{font-size:12.5px;letter-spacing:.12em;color:rgba(245,243,238,.55);margin-bottom:16px;font-weight:700;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:14px;color:var(--on-dark-2);}
.footer-col a:hover{color:var(--accent);}
.contact-line{font-size:14px;color:var(--on-dark-2);line-height:1.8;}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:16px;align-items:center;justify-content:space-between;
  padding-top:22px;font-size:12.5px;color:rgba(245,243,238,.45);letter-spacing:.02em;
}
.fb-links{display:flex;flex-wrap:wrap;gap:18px;}
.fb-links a{font-size:12.5px;color:rgba(245,243,238,.55);}
.fb-links a:hover{color:var(--accent);}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .strip-inner{grid-template-columns:repeat(2,1fr);row-gap:8px;}
  .strip-inner div:nth-child(3){padding-left:0;border-left:0;}
}
@media (max-width:991px){
  .nav-chips,.header-cta{display:none;}
  .mobile-toggle{display:flex;margin-left:auto;}
  .header-inner{height:72px;gap:16px;}
  .head-grid{grid-template-columns:1fr;}
  .hero-figure{order:2;}
  .float-card{left:12px;bottom:12px;}
  .index-wrap{grid-template-columns:1fr;}
  .toc{position:static;top:auto;border:1px solid var(--line);border-radius:var(--r-card);padding:20px;background:var(--white);}
  .toc ol{flex-direction:row;flex-wrap:wrap;gap:6px 8px;}
  .toc a{border-left:0;border-bottom:2px solid transparent;padding:4px 0;margin-left:0;font-size:14px;}
  .toc a.is-active{border-left:0;border-bottom-color:var(--accent);}
  .toc-note{display:none;}
  .platform-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .cta-band{flex-direction:column;align-items:flex-start;}
}
@media (max-width:767px){
  .page-head h1{line-height:1.16;}
  .index-item{grid-template-columns:38px 1fr;gap:14px;padding:22px 0;}
  .ix-arrow{display:none;}
  .ix-title{font-size:17.5px;}
  .faq-accordion .accordion-button{font-size:16px;padding:20px 44px 20px 0;}
  .faq-accordion .accordion-body{padding:0 8px 22px 38px;}
  .cta-actions{width:100%;}
  .cta-actions .btn-rl{flex:1 1 auto;}
}
@media (max-width:575px){
  .spec-strip .strip-inner{grid-template-columns:1fr;}
  .strip-inner div + div{border-left:0;padding-left:0;}
  .platform-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .head-actions .btn-rl{width:100%;}
  .hero-figure .float-card{position:static;margin-top:12px;left:auto;bottom:auto;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category2 */
:root{
  --ink:#1B1E22;
  --ink-2:#5C5F63;
  --ink-3:#8A8681;
  --yellow:#F0B429;
  --yellow-hi:#FFC93C;
  --teal:#3E5C58;
  --paper:#F7F6F3;
  --white:#FFFFFF;
  --dark:#14161A;
  --line:#E4E0D8;
  --line-soft:#EDE9E1;
  --cream:#F2EFE9;
  --r-card:14px;
  --r-btn:10px;
  --shadow:0 1px 0 var(--line),0 8px 24px rgba(27,30,34,.06);
  --shadow-hover:0 1px 0 var(--line),0 14px 34px rgba(27,30,34,.11);
  --ease:cubic-bezier(.2,.7,.2,1);
  --font:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background-color:var(--paper);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  opacity:.5;
  background-image:repeating-linear-gradient(0deg,rgba(27,30,34,.022) 0 1px,transparent 1px 4px);
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
a:hover{color:inherit}
button{font-family:inherit}
ul,ol{margin:0;padding:0}
h1,h2,h3,h4,p{margin:0}
.container{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding-left:clamp(20px,4vw,40px);
  padding-right:clamp(20px,4vw,40px);
}
@media (min-width:1400px){.container{max-width:1240px}}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--dark);color:#A8A49C;font-size:12.5px;position:relative;z-index:2}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:36px;flex-wrap:wrap}
.topbar .tb-left{letter-spacing:.02em}
.topbar .tb-right{color:#D8D3C8;border-bottom:1px solid rgba(240,180,41,.5);padding-bottom:1px;transition:color .18s var(--ease)}
.topbar .tb-right:hover{color:var(--yellow)}

/* ---------- Header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(247,246,243,.94);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 6px 20px rgba(27,30,34,.07)}
.header-inner{display:flex;align-items:center;gap:24px;min-height:84px;transition:min-height .25s var(--ease)}
.site-header.is-scrolled .header-inner{min-height:68px}
.brand{display:inline-flex;align-items:center;gap:11px;border-right:1px solid var(--line);padding-right:22px;flex:0 0 auto}
.brand-mark{position:relative;width:26px;height:26px;background:var(--yellow);border-radius:6px;flex:0 0 auto;box-shadow:inset 0 0 0 1px rgba(27,30,34,.14)}
.brand-mark::after{content:"";position:absolute;inset:7px;border:2px solid var(--ink);border-radius:2px}
.brand-text{display:flex;flex-direction:column;line-height:1.05}
.brand-main{font-size:19px;font-weight:900;letter-spacing:.02em;color:var(--ink)}
.brand-sub{font-size:10.5px;letter-spacing:.18em;color:var(--ink-3);margin-top:4px}
.nav-chips{
  display:flex;
  align-items:center;
  gap:8px;
  flex:1 1 auto;
  overflow-x:auto;
  scrollbar-width:none;
  -ms-overflow-style:none;
  padding:4px 2px;
}
.nav-chips::-webkit-scrollbar{display:none}
.chip{
  display:inline-flex;
  align-items:center;
  height:36px;
  padding:0 16px;
  border-radius:999px;
  border:1px solid var(--line);
  font-size:14px;
  font-weight:600;
  color:var(--ink-2);
  white-space:nowrap;
  background:transparent;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.chip:hover{border-color:var(--ink);color:var(--ink)}
.chip.is-active{background:var(--ink);border-color:var(--ink);color:#FFFFFF}
.header-cta{flex:0 0 auto}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:9px;
  height:44px;
  padding:0 22px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:700;
  border:1px solid transparent;
  cursor:pointer;
  white-space:nowrap;
  transition:background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),transform .12s var(--ease);
}
.btn .ar{transition:transform .2s var(--ease)}
.btn:hover .ar{transform:translateX(4px)}
.btn:active{transform:translateY(1px)}
.btn:focus-visible{outline:2px solid var(--yellow);outline-offset:2px}
.btn-main{background:var(--ink);color:var(--yellow)}
.btn-main:hover{background:#0C0E10;color:var(--yellow-hi)}
.btn-line{border-color:var(--ink);color:var(--ink);background:transparent}
.btn-line:hover{background:var(--ink);color:#FFFFFF}
.btn-yellow{background:var(--yellow);color:var(--ink)}
.btn-yellow:hover{background:var(--yellow-hi)}
.btn-invert{border-color:rgba(255,255,255,.28);color:#F5F3EE;background:transparent}
.btn-invert:hover{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.55);color:#FFFFFF}
.btn-lg{height:52px;padding:0 26px;font-size:16px}

/* ---------- 面包屑 ---------- */
.crumbs{padding-top:26px;font-size:13px;color:var(--ink-3)}
.crumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:6px;list-style:none}
.crumbs li{display:inline-flex;align-items:center}
.crumbs li:not(:first-child)::before{content:"/";margin-right:6px;color:#C9C4B9}
.crumbs a{color:var(--ink-2);transition:color .18s var(--ease)}
.crumbs a:hover{color:var(--ink)}
.crumbs [aria-current="page"]{color:var(--ink);font-weight:600}

/* ---------- 页头 ---------- */
.page-hero{padding:clamp(26px,4vw,44px) 0 clamp(34px,5vw,60px);position:relative}
.hero-eyebrow{display:inline-flex;align-items:center;gap:9px;height:26px;padding:0 12px;border-radius:999px;background:var(--cream);color:var(--ink);font-size:12px;font-weight:700;letter-spacing:.06em;margin-bottom:20px}
.hero-eyebrow::before{content:"";width:7px;height:7px;background:var(--yellow);border-radius:2px}
.page-hero h1{
  font-size:clamp(30px,4.6vw,54px);
  font-weight:900;
  line-height:1.12;
  letter-spacing:-.02em;
  max-width:19em;
  margin-bottom:18px;
}
.hl{background:linear-gradient(transparent 62%,rgba(240,180,41,.45) 62%);padding:0 2px}
.lede{font-size:16px;color:var(--ink-2);max-width:62ch;margin-bottom:24px}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px 22px;font-size:13px;color:var(--ink-3);padding-top:20px;border-top:1px solid var(--line);max-width:820px}
.hero-meta span{display:inline-flex;align-items:center;gap:8px}
.hero-meta span::before{content:"";width:4px;height:12px;background:var(--yellow);border-radius:1px;display:block}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:26px}

/* ---------- 通用板块 ---------- */
.section{padding:clamp(52px,7vw,92px) 0;position:relative;z-index:1}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:clamp(24px,4vw,42px)}
.sec-label{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.16em;color:var(--ink-3);font-weight:700}
.sec-label::before{content:"";width:10px;height:10px;background:var(--yellow);display:block;border-radius:1px}
.sec-head h2{font-size:clamp(22px,2.7vw,32px);font-weight:800;line-height:1.25;margin-top:10px;letter-spacing:-.01em}
.sec-sub{font-size:14.5px;color:var(--ink-2);margin-top:8px;max-width:52ch}
.sec-link{font-size:14px;font-weight:700;color:var(--ink);border-bottom:1px solid var(--yellow);padding-bottom:2px;display:inline-flex;align-items:center;gap:6px}
.sec-link:hover{color:var(--ink)}
.sec-link .ar{transition:transform .2s var(--ease)}
.sec-link:hover .ar{transform:translateX(4px)}

/* ---------- 卡片矩阵 ---------- */
.matrix{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.mx-card{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow);
  overflow:hidden;
  display:flex;
  flex-direction:column;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.mx-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.mx-media{display:block;position:relative;aspect-ratio:3/2;background:var(--line-soft);overflow:hidden;border-bottom:1px solid var(--line)}
.mx-media img{width:100%;height:100%;object-fit:cover;transition:transform .55s var(--ease)}
.mx-card:hover .mx-media img{transform:scale(1.04)}
.mx-num{
  position:absolute;left:14px;top:14px;
  background:rgba(20,22,26,.84);
  color:#F5F3EE;
  font-size:11.5px;
  letter-spacing:.12em;
  font-feature-settings:"tnum";
  padding:4px 10px;
  border-radius:999px;
}
.mx-body{padding:20px 20px 18px;display:flex;flex-direction:column;gap:10px;flex:1}
.tag{
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 11px;
  border-radius:999px;
  background:var(--cream);
  color:var(--ink);
  font-size:12px;
  font-weight:700;
  border:1px solid transparent;
  align-self:flex-start;
}
.tag-teal{background:transparent;border-color:var(--teal);color:var(--teal)}
.mx-body h3{font-size:19px;font-weight:800;line-height:1.45;letter-spacing:-.005em}
.mx-body p{font-size:15px;color:var(--ink-2);line-height:1.8}
.mx-foot{
  margin-top:auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding-top:13px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--ink-3);
  font-feature-settings:"tnum";
}
.mx-arrow{color:var(--ink);font-weight:700;transition:transform .2s var(--ease)}
.mx-card:hover .mx-arrow{transform:translateX(4px)}

/* ---------- 深色场景条带 ---------- */
.scene{position:relative;overflow:hidden;border-radius:18px;background:var(--dark);color:#F5F3EE;border:1px solid #22262C}
.scene::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:url(/assets/images/backpic/back-1.png);
  background-size:cover;
  background-position:center;
  opacity:.20;
}
.scene::after{content:"";position:absolute;inset:0;background:radial-gradient(120% 90% at 15% 10%,rgba(240,180,41,.14),transparent 60%)}
.scene-inner{position:relative;z-index:1;padding:clamp(28px,5vw,54px)}
.scene .sec-label{color:#A8A49C}
.scene h2{color:#F5F3EE;font-size:clamp(22px,2.7vw,32px);font-weight:800;margin-top:10px;line-height:1.28}
.scene .scene-sub{color:#A8A49C;font-size:14.5px;margin-top:10px;max-width:56ch}
.checks{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin-top:30px}
.check-item{
  border:1px solid rgba(255,255,255,.13);
  background:rgba(255,255,255,.035);
  border-radius:12px;
  padding:22px 20px;
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.check-item:hover{border-color:rgba(240,180,41,.55);background:rgba(255,255,255,.06)}
.check-num{font-size:13px;font-weight:800;color:var(--yellow);letter-spacing:.14em;font-feature-settings:"tnum"}
.check-item h3{font-size:17px;font-weight:800;color:#F5F3EE;margin:10px 0 8px;line-height:1.5}
.check-item p{font-size:14.5px;color:#A8A49C;line-height:1.85}

/* ---------- 流程清单 ---------- */
.flow{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.flow-item{padding:26px 22px;border-left:1px solid var(--line);transition:background .2s var(--ease)}
.flow-item:first-child{border-left:0}
.flow-item:hover{background:var(--white)}
.flow-item .fi-num{font-size:26px;font-weight:900;color:#D6D1C6;font-feature-settings:"tnum";line-height:1}
.flow-item h3{font-size:16.5px;font-weight:800;margin:12px 0 6px}
.flow-item p{font-size:14.5px;color:var(--ink-2);line-height:1.8}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px}
.faq-acc .accordion-item{background:transparent;border:0;border-top:1px solid var(--line)}
.faq-acc .accordion-item:last-child{border-bottom:1px solid var(--line)}
.faq-acc .accordion-button{
  background:transparent;
  color:var(--ink);
  font-size:17px;
  font-weight:700;
  line-height:1.55;
  padding:22px 62px 22px 0;
  border-radius:0;
  box-shadow:none;
  position:relative;
  transition:color .18s var(--ease);
}
.faq-acc .accordion-button:not(.collapsed){background:transparent;color:var(--ink)}
.faq-acc .accordion-button:hover{color:var(--teal)}
.faq-acc .accordion-button:focus{box-shadow:none;border-color:transparent;z-index:auto}
.faq-acc .accordion-button:focus-visible{outline:2px solid var(--yellow);outline-offset:2px}
.faq-acc .accordion-button::after{display:none}
.faq-acc .accordion-button::before{
  content:"+";
  position:absolute;
  right:2px;
  top:50%;
  transform:translateY(-50%);
  width:30px;
  height:30px;
  line-height:27px;
  text-align:center;
  border:1px solid var(--line);
  border-radius:999px;
  font-size:18px;
  font-weight:600;
  color:var(--ink-2);
  transition:background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.faq-acc .accordion-button:not(.collapsed)::before{content:"−";background:var(--yellow);border-color:var(--yellow);color:var(--ink)}
.faq-acc .accordion-body{padding:0 0 24px;font-size:15.5px;line-height:1.9;color:var(--ink-2);max-width:72ch}

/* ---------- CTA 条 ---------- */
.cta-band{
  background:var(--dark);
  border:1px solid #24282E;
  border-radius:16px;
  padding:clamp(26px,4vw,44px);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:26px;
  flex-wrap:wrap;
  position:relative;
  overflow:hidden;
}
.cta-band::after{content:"";position:absolute;right:-60px;top:-60px;width:220px;height:220px;border-radius:50%;background:radial-gradient(circle,rgba(240,180,41,.16),transparent 68%)}
.cta-copy{position:relative;z-index:1;max-width:56ch}
.cta-copy h2{font-size:clamp(20px,2.4vw,28px);font-weight:800;color:#F5F3EE;line-height:1.3}
.cta-copy p{font-size:14.5px;color:#A8A49C;margin-top:10px;line-height:1.85}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;position:relative;z-index:1}

/* ---------- 返回链接 ---------- */
.back-home{padding:34px 0 0}
.back-home a{font-size:14px;font-weight:700;color:var(--ink-2);display:inline-flex;align-items:center;gap:8px;border-bottom:1px solid var(--line);padding-bottom:3px;transition:color .18s var(--ease),border-color .18s var(--ease)}
.back-home a:hover{color:var(--ink);border-color:var(--yellow)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:#A8A49C;padding:clamp(46px,6vw,78px) 0 26px;margin-top:clamp(42px,6vw,80px)}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.2fr;gap:34px}
.site-footer .brand{border-right:0;padding-right:0}
.site-footer .brand-main{color:#F5F3EE}
.site-footer .brand-sub{color:#8A8681}
.footer-brand p{font-size:14px;line-height:1.9;color:#A8A49C;margin-top:16px;max-width:36ch}
.footer-col h4{font-size:12px;font-weight:700;letter-spacing:.16em;color:#8A8681;margin-bottom:16px}
.footer-col ul{list-style:none;display:grid;gap:10px}
.footer-col a{font-size:14px;color:#D8D3C8;transition:color .18s var(--ease)}
.footer-col a:hover{color:var(--yellow)}
.contact-line{font-size:14px;color:#8A8681;line-height:1.75}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;
  gap:16px;flex-wrap:wrap;
  border-top:1px solid rgba(255,255,255,.10);
  margin-top:40px;padding-top:20px;
  font-size:13px;color:#8A8681;
}
.fb-links{display:flex;gap:18px;flex-wrap:wrap}
.fb-links a{color:#A8A49C;transition:color .18s var(--ease)}
.fb-links a:hover{color:var(--yellow)}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .matrix{grid-template-columns:repeat(2,minmax(0,1fr))}
  .flow{grid-template-columns:repeat(2,minmax(0,1fr))}
  .flow-item:nth-child(3){border-left:0}
  .flow-item:nth-child(n+3){border-top:1px solid var(--line)}
  .footer-grid{grid-template-columns:1.5fr 1fr 1fr;gap:28px}
  .footer-brand{grid-column:1 / -1}
}
@media (max-width:991px){
  .header-inner{flex-wrap:wrap;gap:12px;min-height:auto;padding:12px 0 10px}
  .site-header.is-scrolled .header-inner{min-height:auto}
  .brand{border-right:0;padding-right:0}
  .nav-chips{order:3;flex:0 0 100%;width:100%;padding:4px 0}
  .header-cta{margin-left:auto}
  .checks{grid-template-columns:1fr}
  .hero-meta{border-top:0;padding-top:0}
}
@media (max-width:767px){
  .matrix{grid-template-columns:1fr}
  .flow{grid-template-columns:1fr}
  .flow-item{border-left:0!important;border-top:1px solid var(--line)}
  .flow-item:first-child{border-top:0}
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-brand{grid-column:1 / -1}
  .cta-band{flex-direction:column;align-items:flex-start}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto}
  .topbar-inner{min-height:0;padding:8px 0;justify-content:flex-start}
}
@media (max-width:575px){
  .footer-grid{grid-template-columns:1fr}
  .page-hero h1{letter-spacing:-.01em}
  .btn{padding:0 18px;font-size:14.5px}
  .hero-actions .btn{width:100%}
  .faq-acc .accordion-button{font-size:16px;padding-right:52px}
}
@media (prefers-reduced-motion:reduce){
  *{transition-duration:.001ms!important;animation-duration:.001ms!important}
  .mx-card:hover{transform:none}
  .mx-card:hover .mx-media img{transform:none}
}

/* roulang page: category3 */
:root{
  --ink:#1B1E22;
  --ink-deep:#14161A;
  --yellow:#F0B429;
  --yellow-hi:#FFC93C;
  --teal:#3E5C58;
  --paper:#F7F6F3;
  --white:#FFFFFF;
  --text:#1B1E22;
  --muted:#5C5F63;
  --faint:#8A8681;
  --line:#E4E0D8;
  --line-soft:#EDE9E1;
  --dark-text:#F5F3EE;
  --dark-muted:#A8A49C;
  --radius-lg:16px;
  --radius:14px;
  --radius-sm:10px;
  --shadow-card:0 1px 0 var(--line), 0 8px 24px rgba(27,30,34,.06);
  --shadow-hover:0 1px 0 var(--line), 0 14px 32px rgba(27,30,34,.10);
  --ease:cubic-bezier(.2,.7,.2,1);
  --font-sans:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  font-feature-settings:"tnum";
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
a:hover{color:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--yellow);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1240px;margin:0 auto;padding-left:clamp(20px,4vw,40px);padding-right:clamp(20px,4vw,40px)}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--ink);color:var(--yellow);padding:10px 18px;border-radius:0 0 10px 0;z-index:2000}
.skip-link:focus{left:0}

/* ================= Header ================= */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(247,246,243,.92);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .22s var(--ease);
}
.site-header.is-stuck{box-shadow:0 8px 24px rgba(27,30,34,.07)}
.header-inner{
  display:flex;align-items:center;gap:24px;
  min-height:84px;
  transition:min-height .22s var(--ease);
}
.site-header.is-stuck .header-inner{min-height:68px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:12px;height:12px;border-radius:3px;background:var(--yellow);
  box-shadow:0 0 0 3px rgba(240,180,41,.18);
  flex:0 0 12px;
}
.brand-text{display:flex;flex-direction:column;line-height:1.12}
.brand-main{font-size:21px;font-weight:900;letter-spacing:-.01em;color:var(--ink)}
.brand-sub{font-size:11px;letter-spacing:.16em;color:var(--faint);font-weight:600}
.nav-wrap{
  flex:1 1 auto;min-width:0;
  padding-left:24px;border-left:1px solid var(--line);
  display:flex;align-items:center;
}
.nav-chips{
  display:flex;align-items:center;gap:6px;
  overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;
  padding:4px 0;
}
.nav-chips::-webkit-scrollbar{display:none}
.chip{
  display:inline-flex;align-items:center;gap:7px;
  padding:8px 15px;border-radius:999px;
  border:1px solid transparent;
  color:var(--muted);font-size:14px;font-weight:600;
  white-space:nowrap;
  transition:background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease);
}
.chip:hover{background:var(--white);border-color:var(--line);color:var(--ink)}
.chip.is-active{background:var(--ink);border-color:var(--ink);color:var(--white)}
.chip.is-active::before{content:"";width:6px;height:6px;border-radius:2px;background:var(--yellow)}
.header-cta{flex:0 0 auto;padding-left:24px;border-left:1px solid var(--line)}

/* ================= Buttons ================= */
.btn-brand,.btn-outline-brand,.btn-sun{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  height:46px;padding:0 22px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:700;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease);
}
.btn-brand{background:var(--ink);color:var(--yellow);border-color:var(--ink)}
.btn-brand:hover{background:#0B0D0F;color:var(--yellow-hi);box-shadow:0 8px 20px rgba(27,30,34,.18)}
.btn-outline-brand{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn-outline-brand:hover{background:var(--ink);color:var(--white)}
.btn-sun{background:var(--yellow);color:var(--ink);border-color:var(--yellow)}
.btn-sun:hover{background:var(--yellow-hi);border-color:var(--yellow-hi)}
.btn-brand:active,.btn-outline-brand:active,.btn-sun:active{transform:translateY(1px)}
.btn-brand .arw,.btn-outline-brand .arw,.btn-sun .arw{transition:transform .18s var(--ease)}
.btn-brand:hover .arw,.btn-outline-brand:hover .arw,.btn-sun:hover .arw{transform:translateX(4px)}
.btn-sm{height:40px;padding:0 16px;font-size:14px}

/* ================= Common ================= */
.section{padding:clamp(56px,7vw,100px) 0}
.section-head{max-width:720px;margin-bottom:clamp(28px,4vw,44px)}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-size:12.5px;font-weight:700;letter-spacing:.08em;color:var(--ink);
  text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:10px;height:10px;border-radius:2px;background:var(--yellow)}
h1{font-size:clamp(32px,4.8vw,56px);font-weight:900;line-height:1.1;letter-spacing:-.02em}
h2{font-size:clamp(23px,3vw,33px);font-weight:800;line-height:1.24;letter-spacing:-.015em}
h3{font-size:20px;font-weight:700;line-height:1.4}
h4{font-size:16px;font-weight:700;line-height:1.5}
.lead{font-size:clamp(15px,1.4vw,17px);color:var(--muted);line-height:1.85}
.hl{background:linear-gradient(transparent 62%,rgba(240,180,41,.42) 62%);padding:0 2px}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  height:24px;padding:0 11px;border-radius:999px;
  background:#F2EFE9;color:var(--ink);
  font-size:12px;font-weight:600;letter-spacing:.02em;white-space:nowrap;
}
.tag-teal{background:transparent;border:1px solid var(--teal);color:var(--teal)}
.divider{height:1px;background:var(--line);border:0;margin:0}

/* ================= Breadcrumb ================= */
.crumb-bar{padding-top:22px;padding-bottom:6px}
.crumb-list{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--faint)}
.crumb-list li{display:inline-flex;align-items:center;gap:8px}
.crumb-list li+li::before{content:"/";color:var(--line);margin-right:2px}
.crumb-list a{transition:color .16s var(--ease)}
.crumb-list a:hover{color:var(--ink)}
.crumb-list [aria-current]{color:var(--ink);font-weight:600}

/* ================= Page Hero ================= */
.page-hero{position:relative;overflow:hidden;padding:clamp(26px,4vw,44px) 0 clamp(36px,5vw,64px)}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(680px 320px at 86% 6%,rgba(240,180,41,.16),transparent 68%);
}
.hero-grid{
  position:relative;z-index:1;
  display:grid;grid-template-columns:1.32fr 1fr;
  gap:clamp(28px,4vw,56px);align-items:center;
}
.hero-copy .chip-line{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:18px}
.hero-copy h1{margin-bottom:18px;max-width:15em}
.hero-copy .lead{max-width:34em;margin-bottom:26px}
.btn-row{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:20px}
.meta-line{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:13px;color:var(--faint);font-variant-numeric:tabular-nums;
}
.meta-line span{display:inline-flex;align-items:center;gap:8px}
.meta-line span+span::before{content:"·";color:var(--line);margin-right:2px}
.hero-figure{position:relative}
.figure-frame{
  position:relative;overflow:hidden;
  border:1px solid var(--line);border-radius:var(--radius);
  background:var(--line-soft);
  box-shadow:var(--shadow-card);
  aspect-ratio:16/10;
}
.figure-frame img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.figure-frame:hover img{transform:scale(1.03)}
.float-card{
  position:absolute;left:16px;bottom:16px;
  display:flex;align-items:center;gap:10px;
  padding:10px 14px;border-radius:var(--radius-sm);
  background:rgba(20,22,26,.9);
  border:1px solid rgba(255,255,255,.16);
  color:var(--dark-text);font-size:12px;line-height:1.4;
  letter-spacing:.02em;
  backdrop-filter:blur(4px);
}
.float-card b{display:block;font-size:12.5px;font-weight:700}
.float-card small{display:block;font-size:11.5px;color:var(--dark-muted)}
.dot-mark{width:8px;height:8px;border-radius:50%;background:var(--yellow);flex:0 0 8px}
.hero-rule{margin-top:18px;height:1px;background:linear-gradient(90deg,var(--ink) 0 28px,var(--line) 28px 100%)}

/* ================= Timeline ================= */
.flow-section{border-top:1px solid var(--line);background:var(--paper)}
.timeline{position:relative;margin-top:8px}
.tl-item{
  position:relative;
  display:grid;
  grid-template-columns:92px 32px 1fr;
  column-gap:14px;
  padding-bottom:26px;
}
.tl-meta{padding-top:22px;text-align:right}
.tl-num{
  display:block;font-size:24px;font-weight:900;letter-spacing:-.03em;
  color:#D9D3C6;line-height:1;font-variant-numeric:tabular-nums;
}
.tl-step{display:block;font-size:12px;font-weight:700;color:var(--faint);letter-spacing:.06em;margin-top:6px}
.tl-axis{position:relative}
.tl-axis::before{
  content:"";position:absolute;left:50%;top:26px;bottom:-26px;
  width:1px;background:var(--line);transform:translateX(-50%);
}
.tl-item:last-child .tl-axis::before{display:none}
.tl-dot{
  position:absolute;left:50%;top:26px;transform:translate(-50%,-50%);
  width:12px;height:12px;border-radius:50%;
  background:var(--yellow);box-shadow:0 0 0 4px var(--paper);
}
.tl-body{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:22px clamp(18px,2.4vw,28px);
  box-shadow:var(--shadow-card);
  transition:box-shadow .22s var(--ease),transform .22s var(--ease),border-color .22s var(--ease);
}
.tl-body:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:#D8D3C8}
.tl-body h3{margin-bottom:8px;font-size:19px}
.tl-body p{font-size:15.5px;color:var(--muted);line-height:1.85}
.tl-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}

/* ================= Stat strip ================= */
.stat-strip{
  display:grid;grid-template-columns:repeat(4,1fr);
  background:var(--white);border:1px solid var(--line);
  border-radius:var(--radius);overflow:hidden;
  box-shadow:var(--shadow-card);
  margin-top:clamp(28px,4vw,44px);
}
.stat-item{padding:24px clamp(16px,2vw,24px);border-right:1px solid var(--line)}
.stat-item:last-child{border-right:0}
.stat-num{font-size:clamp(26px,3.2vw,34px);font-weight:900;letter-spacing:-.03em;line-height:1.1;font-variant-numeric:tabular-nums}
.stat-num i{font-style:normal;color:var(--yellow)}
.stat-label{font-size:13px;color:var(--muted);margin-top:6px}

/* ================= Split feature ================= */
.split{display:grid;grid-template-columns:1.05fr 1fr;gap:clamp(26px,4vw,56px);align-items:center}
.split-figure{
  position:relative;overflow:hidden;border-radius:var(--radius);
  border:1px solid var(--line);background:var(--line-soft);
  aspect-ratio:4/3;box-shadow:var(--shadow-card);
}
.split-figure img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.split-figure:hover img{transform:scale(1.03)}
.note-list{margin-top:22px;display:grid;gap:14px}
.note-list li{
  display:grid;grid-template-columns:18px 1fr;gap:12px;
  padding-top:14px;border-top:1px solid var(--line);
}
.note-list li:first-child{border-top:0;padding-top:0}
.note-list b{font-size:15.5px;font-weight:700;display:block;margin-bottom:2px}
.note-list span{font-size:14.5px;color:var(--muted);line-height:1.8}
.sq{width:10px;height:10px;border-radius:2px;background:var(--yellow);margin-top:9px}

/* ================= FAQ ================= */
.faq-list{border-top:1px solid var(--line);margin-top:6px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-btn{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 0;background:none;border:0;text-align:left;
  font-size:16.5px;font-weight:700;color:var(--ink);line-height:1.5;
  transition:color .18s var(--ease);
}
.faq-btn:hover{color:var(--teal)}
.faq-ic{position:relative;width:16px;height:16px;flex:0 0 16px;transition:transform .22s var(--ease)}
.faq-ic::before,.faq-ic::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--ink);
  transform:translate(-50%,-50%);transition:transform .22s var(--ease),opacity .22s var(--ease);
}
.faq-ic::before{width:16px;height:1.5px}
.faq-ic::after{width:1.5px;height:16px}
.faq-btn[aria-expanded="true"] .faq-ic::after{transform:translate(-50%,-50%) scaleY(0);opacity:0}
.faq-answer{padding:0 44px 24px 0;font-size:15.5px;color:var(--muted);line-height:1.9;max-width:60em}

/* ================= Mini CTA ================= */
.mini-cta{
  background:var(--ink-deep);
  border-radius:var(--radius-lg);
  border:1px solid rgba(255,255,255,.10);
  color:var(--dark-text);
  padding:clamp(24px,4vw,40px);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
}
.mini-cta h2{font-size:clamp(20px,2.4vw,26px);color:var(--dark-text);margin-bottom:8px}
.mini-cta p{font-size:14px;color:var(--dark-muted);max-width:38em;line-height:1.8}
.mini-cta .btn-row{margin-bottom:0}
.back-row{padding:28px 0 0}
.back-link{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--muted);transition:color .18s var(--ease)}
.back-link:hover{color:var(--ink)}
.back-link .arw{transition:transform .18s var(--ease)}
.back-link:hover .arw{transform:translateX(-4px)}

/* ================= Footer ================= */
.site-footer{background:var(--ink-deep);color:var(--dark-text);padding:clamp(48px,6vw,76px) 0 28px;margin-top:clamp(48px,6vw,80px)}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:clamp(24px,3vw,48px)}
.footer-brand .brand{margin-bottom:16px}
.footer-brand .brand-main{color:var(--dark-text)}
.footer-brand .brand-sub{color:var(--dark-muted)}
.footer-brand p{font-size:14px;color:var(--dark-muted);line-height:1.85;max-width:26em}
.footer-col h4{font-size:12.5px;letter-spacing:.1em;color:var(--dark-muted);font-weight:700;margin-bottom:16px}
.footer-col ul{display:grid;gap:10px}
.footer-col a{font-size:14px;color:var(--dark-text);opacity:.86;transition:opacity .18s var(--ease),color .18s var(--ease)}
.footer-col a:hover{opacity:1;color:var(--yellow)}
.contact-line{font-size:13.5px;color:var(--dark-muted);line-height:1.75}
.footer-bottom{
  margin-top:clamp(32px,4vw,48px);padding-top:20px;
  border-top:1px solid rgba(255,255,255,.10);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  font-size:12.5px;color:var(--dark-muted);
}
.fb-links{display:flex;flex-wrap:wrap;gap:18px}
.fb-links a{color:var(--dark-muted);transition:color .18s var(--ease)}
.fb-links a:hover{color:var(--dark-text)}

/* ================= Reveal ================= */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .32s var(--ease),transform .32s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ================= Responsive ================= */
@media (max-width:1199.98px){
  .hero-grid{grid-template-columns:1.2fr 1fr}
}
@media (max-width:991.98px){
  .header-inner{flex-wrap:wrap;gap:14px;padding-top:12px;padding-bottom:8px;min-height:auto}
  .site-header.is-stuck .header-inner{min-height:auto}
  .nav-wrap{order:3;flex:1 1 100%;padding-left:0;border-left:0;border-top:1px solid var(--line);padding-top:8px}
  .header-cta{padding-left:0;border-left:0;margin-left:auto}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero-copy h1{max-width:none}
  .split{grid-template-columns:1fr;gap:24px}
  .stat-strip{grid-template-columns:repeat(2,1fr)}
  .stat-item:nth-child(2){border-right:0}
  .stat-item:nth-child(1),.stat-item:nth-child(2){border-bottom:1px solid var(--line)}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:767.98px){
  .tl-item{grid-template-columns:26px 1fr;column-gap:14px;padding-bottom:20px}
  .tl-meta{grid-column:2;grid-row:1;text-align:left;padding-top:0;display:flex;align-items:center;gap:10px;margin-bottom:8px}
  .tl-num{font-size:16px;color:#C9C2B2}
  .tl-step{margin-top:0}
  .tl-axis{grid-column:1;grid-row:1 / span 2;align-self:stretch}
  .tl-axis::before{top:14px;bottom:-20px}
  .tl-dot{top:14px}
  .tl-body{grid-column:2;grid-row:2;padding:18px}
  .footer-grid{grid-template-columns:1fr}
  .mini-cta{flex-direction:column;align-items:flex-start}
  .mini-cta .btn-row{width:100%}
  .mini-cta .btn-row > a{flex:1 1 auto}
  .faq-answer{padding-right:0}
}
@media (max-width:519.98px){
  .brand-main{font-size:19px}
  .header-cta .btn-brand{height:40px;padding:0 14px;font-size:13.5px}
  .stat-strip{grid-template-columns:1fr}
  .stat-item{border-right:0;border-bottom:1px solid var(--line)}
  .stat-item:last-child{border-bottom:0}
  .btn-row{width:100%}
  .btn-row > a{width:100%}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category4 */
:root{
  --ink:#1B1E22;
  --ink-deep:#14161A;
  --signal:#F0B429;
  --signal-hi:#FFC93C;
  --teal:#3E5C58;
  --paper:#F7F6F3;
  --white:#FFFFFF;
  --text:#1B1E22;
  --muted:#5C5F63;
  --faint:#8A8681;
  --line:#E4E0D8;
  --line-soft:#EDE9E1;
  --line-dark:rgba(255,255,255,.10);
  --dark-text:#F5F3EE;
  --dark-muted:#A8A49C;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-card:0 1px 0 var(--line),0 8px 24px rgba(27,30,34,.06);
  --shadow-hover:0 1px 0 var(--line),0 16px 32px rgba(27,30,34,.10);
  --container:1240px;
  --font-cn:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-serif:"Songti SC","Noto Serif SC",Georgia,serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:var(--font-cn);
  font-size:16.5px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color .18s ease,border-color .18s ease,background-color .18s ease;}
a:hover{color:var(--ink);}
button{font-family:inherit;}
h1,h2,h3,h4,h5{margin:0;color:var(--ink);font-weight:800;letter-spacing:-.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
::selection{background:var(--signal);color:var(--ink);}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding-left:clamp(20px,4vw,40px);
  padding-right:clamp(20px,4vw,40px);
}
.tnum{font-feature-settings:"tnum" 1,"lnum" 1;font-variant-numeric:tabular-nums;}
.sr-only{
  position:absolute;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;
}

/* ============ 顶部信息条 ============ */
.topbar{
  background:var(--ink-deep);
  color:var(--dark-muted);
  font-size:12.5px;
  letter-spacing:.04em;
}
.topbar .container{
  display:flex;align-items:center;justify-content:space-between;
  gap:16px;min-height:36px;flex-wrap:wrap;
}
.topbar .tb-left{display:flex;align-items:center;gap:10px;}
.tb-dot{
  width:7px;height:7px;border-radius:50%;
  background:var(--signal);display:inline-block;flex:0 0 auto;
}
.topbar a{color:var(--dark-text);border-bottom:1px solid transparent;}
.topbar a:hover{color:var(--signal-hi);border-bottom-color:var(--signal-hi);}

/* ============ 站点头部 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,246,243,.94);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .24s ease,background-color .24s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 22px rgba(27,30,34,.07);}
.header-inner{
  display:flex;align-items:center;gap:clamp(16px,2.4vw,32px);
  min-height:84px;padding-top:10px;padding-bottom:10px;
  transition:min-height .24s ease;
}
.site-header.is-scrolled .header-inner{min-height:68px;}

.brand{display:inline-flex;align-items:center;gap:12px;flex:0 0 auto;}
.brand-mark{
  width:34px;height:34px;border-radius:8px;
  background:var(--signal);
  position:relative;flex:0 0 auto;
  box-shadow:inset 0 0 0 1px rgba(27,30,34,.12);
}
.brand-mark::after{
  content:"";position:absolute;inset:9px;
  border:2px solid var(--ink);
  border-radius:2px;
  border-right-color:transparent;border-bottom-color:transparent;
  transform:rotate(45deg);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-main{font-size:20px;font-weight:900;letter-spacing:.02em;color:var(--ink);}
.brand-sub{font-size:11.5px;letter-spacing:.16em;color:var(--faint);}

.header-divider{width:1px;height:32px;background:var(--line);flex:0 0 auto;}

.nav-chips{
  display:flex;align-items:center;gap:8px;
  flex:1 1 auto;
  overflow-x:auto;
  scrollbar-width:none;
  -ms-overflow-style:none;
  padding:4px 2px;
  scroll-behavior:smooth;
}
.nav-chips::-webkit-scrollbar{display:none;}
.chip{
  flex:0 0 auto;
  display:inline-flex;align-items:center;
  height:38px;padding:0 16px;
  border-radius:999px;
  border:1px solid var(--line);
  background:transparent;
  color:var(--muted);
  font-size:14.5px;font-weight:600;
  white-space:nowrap;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease;
}
.chip:hover{color:var(--ink);border-color:#CFC9BD;background:var(--white);}
.chip.is-active{
  background:var(--ink);color:var(--white);border-color:var(--ink);
  box-shadow:inset 0 -2px 0 var(--signal);
}
.chip.is-active:hover{color:var(--white);background:#101215;}

.header-cta{
  flex:0 0 auto;
  display:inline-flex;align-items:center;gap:8px;
  height:44px;padding:0 22px;
  border-radius:var(--radius-btn);
  background:var(--signal);color:var(--ink);
  font-size:15px;font-weight:800;
  border:1px solid #DDA31F;
  transition:background-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.header-cta:hover{background:var(--signal-hi);color:var(--ink);transform:translateY(-1px);box-shadow:0 8px 18px rgba(240,180,41,.28);}
.header-cta:active{transform:translateY(0);}
.header-cta .arrow{transition:transform .18s ease;}
.header-cta:hover .arrow{transform:translateX(3px);}

.nav-toggle{
  display:none;flex:0 0 auto;
  width:44px;height:44px;border:1px solid var(--line);border-radius:var(--radius-btn);
  background:var(--white);padding:0;
  position:relative;
}
.nav-toggle span{
  position:absolute;left:12px;right:12px;height:2px;background:var(--ink);
  transition:transform .22s ease,opacity .22s ease;
}
.nav-toggle span:nth-child(1){top:17px;}
.nav-toggle span:nth-child(2){top:25px;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(4px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){transform:translateY(-4px) rotate(-45deg);}

.mobile-drawer{
  display:none;
  border-top:1px solid var(--line);
  background:var(--white);
  padding:14px 0 20px;
}
.mobile-drawer .drawer-chips{display:flex;flex-wrap:wrap;gap:8px;}
.mobile-drawer .chip{height:36px;font-size:14px;}
.mobile-drawer .drawer-cta{margin-top:14px;display:block;text-align:center;}

/* ============ 面包屑 ============ */
.crumb-bar{padding:22px 0 0;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--faint);}
.crumb li{display:inline-flex;align-items:center;gap:8px;}
.crumb li+li::before{content:"/";color:#C6C0B4;}
.crumb a{color:var(--faint);}
.crumb a:hover{color:var(--ink);}
.crumb .current{color:var(--muted);font-weight:600;}

/* ============ Hero ============ */
.page-hero{padding:clamp(28px,4vw,48px) 0 clamp(52px,6vw,80px);}
.hero-grid{
  display:grid;
  grid-template-columns:minmax(0,7fr) minmax(0,5fr);
  gap:clamp(28px,4vw,56px);
  align-items:center;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12.5px;letter-spacing:.1em;color:var(--muted);
  font-weight:700;text-transform:uppercase;
  margin-bottom:18px;
}
.eyebrow::before{
  content:"";width:10px;height:10px;background:var(--signal);
  display:inline-block;border-radius:2px;
}
.page-hero h1{
  font-size:clamp(34px,5.2vw,58px);
  line-height:1.08;
  font-weight:900;
  letter-spacing:-.02em;
  margin-bottom:20px;
}
.page-hero h1 .mark{
  position:relative;display:inline-block;z-index:1;
}
.page-hero h1 .mark::after{
  content:"";position:absolute;left:-2px;right:-2px;bottom:6px;height:14px;
  background:var(--signal);opacity:.55;z-index:-1;border-radius:2px;
}
.hero-sub{
  font-size:16.5px;line-height:1.85;color:var(--muted);
  max-width:52ch;margin-bottom:26px;
}
.btn-row{display:flex;flex-wrap:wrap;gap:14px;align-items:center;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:52px;padding:0 26px;
  border-radius:var(--radius-btn);
  font-size:15.5px;font-weight:800;
  border:1px solid transparent;
  cursor:pointer;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.btn:focus-visible{outline:2px solid var(--signal);outline-offset:2px;}
.btn-primary{background:var(--ink);color:var(--signal);border-color:var(--ink);}
.btn-primary:hover{background:#0E1013;color:var(--signal-hi);transform:translateY(-1px);box-shadow:0 10px 22px rgba(27,30,34,.20);}
.btn-primary .arrow{transition:transform .18s ease;}
.btn-primary:hover .arrow{transform:translateX(4px);}
.btn-ghost{background:transparent;color:var(--ink);border-color:#CFC9BD;}
.btn-ghost:hover{border-color:var(--ink);background:var(--white);color:var(--ink);}
.btn:active{transform:translateY(1px);}

.hero-meta{
  margin-top:22px;font-size:13px;color:var(--faint);
  display:flex;flex-wrap:wrap;gap:10px 14px;align-items:center;
}
.hero-meta span{display:inline-flex;align-items:center;gap:14px;}
.hero-meta span+span::before{content:"·";color:#C6C0B4;}

.hero-visual{position:relative;}
.hero-figure{
  border-radius:var(--radius-img);
  overflow:hidden;
  background:var(--line-soft);
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  aspect-ratio:16/10;
}
.hero-figure img{width:100%;height:100%;object-fit:cover;}
.hero-float{
  position:absolute;left:-14px;bottom:-18px;
  background:var(--white);
  border:1px solid var(--line);
  border-radius:12px;
  padding:12px 16px;
  box-shadow:0 12px 26px rgba(27,30,34,.12);
  display:flex;align-items:center;gap:12px;
  max-width:min(300px,90%);
}
.hero-float .hf-num{
  font-size:22px;font-weight:900;color:var(--ink);
  line-height:1;letter-spacing:-.02em;
}
.hero-float .hf-txt{font-size:12.5px;color:var(--muted);line-height:1.5;}
.hero-scale{
  margin-top:30px;height:1px;background:var(--line);position:relative;
}
.hero-scale::before,.hero-scale::after{
  content:"";position:absolute;top:-4px;width:1px;height:9px;background:#CFC9BD;
}
.hero-scale::before{left:0;}
.hero-scale::after{right:0;}

/* ============ 通用板块 ============ */
.section{padding:clamp(56px,7vw,96px) 0;}
.section-head{margin-bottom:clamp(28px,3.4vw,44px);}
.section-tag{
  display:inline-flex;align-items:center;gap:9px;
  font-size:12.5px;font-weight:700;letter-spacing:.08em;
  color:var(--muted);margin-bottom:14px;
}
.section-tag::before{content:"";width:9px;height:9px;background:var(--signal);border-radius:2px;}
.section-head h2{
  font-size:clamp(24px,3vw,34px);
  font-weight:800;line-height:1.22;letter-spacing:-.01em;
  margin-bottom:12px;
}
.section-head p{font-size:15.5px;color:var(--muted);max-width:62ch;}

/* ============ 规格对照 ============ */
.spec-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:20px;
}
.spec-block{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:24px 24px 8px;
  box-shadow:var(--shadow-card);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.spec-block:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:#D8D2C6;}
.spec-block.is-featured{border-color:#DDA31F;box-shadow:0 1px 0 var(--line),0 12px 28px rgba(240,180,41,.16);}
.spec-top{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding-bottom:16px;border-bottom:1px solid var(--line);margin-bottom:6px;
}
.spec-top h3{font-size:19px;font-weight:800;}
.spec-badge{
  display:inline-flex;align-items:center;height:24px;padding:0 11px;
  border-radius:999px;font-size:12px;font-weight:700;
  background:#F2EFE9;color:var(--ink);
}
.spec-badge.accent{background:var(--signal);color:var(--ink);}
.spec-row{
  display:flex;align-items:baseline;justify-content:space-between;gap:16px;
  padding:14px 0;
  border-bottom:1px solid var(--line-soft);
}
.spec-row:last-child{border-bottom:0;}
.spec-row dt{
  flex:0 0 auto;
  font-size:13px;color:var(--faint);letter-spacing:.04em;font-weight:600;
}
.spec-row dd{
  margin:0;text-align:right;
  font-size:15px;font-weight:700;color:var(--ink);
}
.spec-row dd small{display:block;font-size:12px;font-weight:500;color:var(--faint);margin-top:2px;}
.spec-note{
  margin-top:26px;font-size:13.5px;color:var(--faint);
  display:flex;gap:10px;align-items:flex-start;
}
.spec-note::before{content:"";width:4px;background:var(--signal);border-radius:2px;flex:0 0 auto;min-height:18px;margin-top:6px;}

/* ============ 网络与带宽行式列表 ============ */
.hairline-list{border-top:1px solid var(--line);}
.hairline-item{
  display:grid;
  grid-template-columns:minmax(0,3fr) minmax(0,3fr) minmax(0,6fr);
  gap:20px;align-items:center;
  padding:22px 0;
  border-bottom:1px solid var(--line);
  transition:background-color .18s ease;
}
.hairline-item:hover{background:rgba(255,255,255,.6);}
.hi-name{
  display:flex;align-items:center;gap:10px;
  font-size:16px;font-weight:800;color:var(--ink);
}
.hi-name::before{content:"";width:4px;height:18px;background:var(--signal);border-radius:1px;flex:0 0 auto;}
.hi-val{font-size:15px;font-weight:700;color:var(--ink);}
.hi-val small{display:block;font-size:12px;font-weight:500;color:var(--faint);}
.hi-desc{font-size:14.5px;color:var(--muted);line-height:1.75;}

/* ============ 自检步骤 ============ */
.steps{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  gap:0;border-top:1px solid var(--line);
}
.step{
  padding:28px 24px 28px 0;
  border-right:1px solid var(--line);
  position:relative;
}
.step:last-child{border-right:0;padding-right:0;}
.step:not(:first-child){padding-left:24px;}
.step-num{
  font-size:28px;font-weight:900;color:#D6D0C4;
  letter-spacing:-.02em;line-height:1;margin-bottom:16px;
  transition:color .2s ease;
}
.step:hover .step-num{color:var(--signal);}
.step h3{font-size:17px;font-weight:800;margin-bottom:8px;}
.step p{font-size:14px;color:var(--muted);line-height:1.75;}

/* ============ 图文贴士 ============ */
.tip-band{
  display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);
  gap:clamp(24px,4vw,56px);align-items:center;
}
.tip-figure{
  border-radius:var(--radius-img);overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  aspect-ratio:4/3;background:var(--line-soft);
}
.tip-figure img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.tip-figure:hover img{transform:scale(1.03);}
.tip-list{display:grid;gap:18px;}
.tip-item{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:18px 20px;
  display:flex;gap:14px;align-items:flex-start;
  transition:transform .2s ease,box-shadow .2s ease;
}
.tip-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.tip-ico{
  width:30px;height:30px;border-radius:8px;flex:0 0 auto;
  background:#F2EFE9;color:var(--teal);
  display:flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:900;
}
.tip-item h3{font-size:16px;font-weight:800;margin-bottom:4px;}
.tip-item p{font-size:14px;color:var(--muted);line-height:1.75;}

/* ============ FAQ ============ */
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{margin:0;font-size:inherit;font-weight:inherit;}
.faq-btn{
  width:100%;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  background:transparent;border:0;
  padding:24px 4px 24px 0;
  text-align:left;
  font-size:17px;font-weight:700;color:var(--ink);
  cursor:pointer;
  transition:color .18s ease;
}
.faq-btn:hover{color:#000;}
.faq-btn:focus-visible{outline:2px solid var(--signal);outline-offset:2px;border-radius:6px;}
.faq-btn::after{
  content:"+";
  flex:0 0 auto;
  width:28px;height:28px;border-radius:50%;
  border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;
  font-size:18px;font-weight:500;color:var(--muted);
  line-height:1;
  transition:transform .22s ease,background-color .22s ease,color .22s ease,border-color .22s ease;
}
.faq-btn[aria-expanded="true"]::after{
  content:"−";
  background:var(--ink);color:var(--signal);border-color:var(--ink);
}
.faq-a{
  padding:0 40px 26px 0;
  font-size:15.5px;color:var(--muted);line-height:1.85;
  max-width:80ch;
}
.faq-a strong{color:var(--ink);font-weight:700;}

/* ============ CTA 深色带 ============ */
.cta-band{
  background:var(--ink-deep);
  color:var(--dark-text);
  border-radius:18px;
  padding:clamp(32px,4.6vw,56px);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:28px;
  position:relative;
  overflow:hidden;
}
.cta-band::after{
  content:"";
  position:absolute;right:-60px;top:-60px;width:260px;height:260px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(240,180,41,.22),rgba(240,180,41,0) 70%);
  pointer-events:none;
}
.cta-band h2{
  color:var(--dark-text);
  font-size:clamp(22px,2.6vw,30px);
  font-weight:800;line-height:1.25;margin-bottom:10px;
  position:relative;z-index:1;
}
.cta-band p{
  color:var(--dark-muted);font-size:14.5px;max-width:56ch;
  position:relative;z-index:1;
}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;position:relative;z-index:1;}
.btn-signal{background:var(--signal);color:var(--ink);border-color:var(--signal);}
.btn-signal:hover{background:var(--signal-hi);color:var(--ink);transform:translateY(-1px);box-shadow:0 12px 24px rgba(240,180,41,.26);}
.btn-outline-light-x{
  background:transparent;color:var(--dark-text);
  border-color:rgba(255,255,255,.24);
}
.btn-outline-light-x:hover{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.5);color:#fff;}

.back-home{
  display:inline-flex;align-items:center;gap:8px;
  margin-top:30px;font-size:14.5px;font-weight:700;color:var(--muted);
}
.back-home:hover{color:var(--ink);}
.back-home .arrow{transition:transform .18s ease;}
.back-home:hover .arrow{transform:translateX(-4px);}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--ink-deep);
  color:var(--dark-muted);
  padding:clamp(52px,6vw,80px) 0 0;
  margin-top:clamp(56px,7vw,96px);
  border-top:1px solid #202329;
}
.footer-grid{
  display:grid;
  grid-template-columns:minmax(0,4.2fr) repeat(3,minmax(0,2.6fr));
  gap:clamp(24px,3.4vw,48px);
  padding-bottom:48px;
}
.footer-brand .brand{margin-bottom:18px;}
.footer-brand .brand-main{color:var(--dark-text);}
.footer-brand .brand-sub{color:var(--faint);}
.footer-brand p{font-size:14px;line-height:1.85;color:var(--dark-muted);max-width:38ch;}
.footer-col h4{
  font-size:12.5px;letter-spacing:.12em;text-transform:uppercase;
  color:#7E7A73;font-weight:700;margin-bottom:16px;
}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{font-size:14.5px;color:#C9C4BA;}
.footer-col a:hover{color:var(--signal-hi);}
.contact-line{font-size:14px;color:#9A958C;line-height:1.7;}
.footer-bottom{
  border-top:1px solid var(--line-dark);
  padding:22px 0 30px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:14px;font-size:13px;color:#84807A;
}
.fb-links{display:flex;flex-wrap:wrap;gap:20px;}
.fb-links a{color:#9A958C;font-size:13px;}
.fb-links a:hover{color:var(--signal-hi);}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .spec-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .spec-grid .spec-block.is-featured{grid-column:span 1;}
  .footer-grid{grid-template-columns:minmax(0,1fr) minmax(0,1fr);}
  .footer-brand{grid-column:span 2;}
}
@media (max-width:991.98px){
  .header-inner{flex-wrap:wrap;min-height:74px;row-gap:8px;}
  .header-divider{display:none;}
  .nav-chips{order:3;flex:1 0 100%;padding-bottom:6px;}
  .header-cta{display:none;}
  .nav-toggle{display:block;margin-left:auto;}
  .mobile-drawer.is-open{display:block;}
  .hero-grid{grid-template-columns:minmax(0,1fr);}
  .hero-visual{order:2;}
  .hero-float{left:auto;right:10px;bottom:-16px;}
  .hero-scale{margin-top:26px;}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr));}
  .step{padding:24px 20px 24px 0;border-right:0;border-bottom:1px solid var(--line);}
  .step:not(:first-child){padding-left:0;}
  .step:nth-child(odd){padding-right:20px;border-right:1px solid var(--line);}
  .tip-band{grid-template-columns:minmax(0,1fr);}
  .tip-figure{order:2;}
  .hairline-item{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:8px 16px;}
  .hi-desc{grid-column:1/-1;}
  .cta-band{flex-direction:column;align-items:flex-start;}
}
@media (max-width:767.98px){
  body{font-size:16px;}
  .topbar .tb-right{display:none;}
  .spec-grid{grid-template-columns:minmax(0,1fr);}
  .footer-grid{grid-template-columns:minmax(0,1fr);}
  .footer-brand{grid-column:span 1;}
  .steps{grid-template-columns:minmax(0,1fr);}
  .step,.step:nth-child(odd){padding:22px 0;border-right:0;border-bottom:1px solid var(--line);}
  .hero-meta{font-size:12.5px;}
  .btn{width:100%;}
  .btn-row{flex-direction:column;align-items:stretch;}
  .cta-actions{width:100%;flex-direction:column;}
  .spec-block{padding:20px 20px 6px;}
  .faq-a{padding-right:8px;}
}
@media (max-width:519.98px){
  .page-hero h1{font-size:clamp(28px,8.6vw,36px);}
  .hero-float{padding:10px 12px;gap:10px;max-width:88%;}
  .hero-float .hf-num{font-size:18px;}
  .hero-float .hf-txt{font-size:12px;}
  .section{padding:48px 0;}
  .hairline-item{grid-template-columns:minmax(0,1fr);}
  .hi-val{text-align:left;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
}

/* roulang page: category5 */
:root{
  --ink:#1B1E22;
  --ink-2:#14161A;
  --paper:#F7F6F3;
  --white:#FFFFFF;
  --line:#E4E0D8;
  --line-soft:#EDE9E1;
  --muted:#5C5F63;
  --faint:#8A8681;
  --accent:#F0B429;
  --accent-2:#FFC93C;
  --teal:#3E5C58;
  --danger:#B4472F;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --max:1240px;
  --shadow-1:0 1px 0 var(--line), 0 8px 24px rgba(27,30,34,.06);
  --shadow-2:0 1px 0 var(--line), 0 14px 32px rgba(27,30,34,.10);
  --ease:cubic-bezier(.2,.7,.2,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16.5px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  padding-top:0;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color .18s var(--ease);}
a:hover{color:var(--ink);}
button{font-family:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px;}

.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 clamp(20px,4vw,40px);}

/* ============ 顶部信息条 ============ */
.topbar{
  background:var(--ink-2);
  color:#A8A49C;
  font-size:13px;
  letter-spacing:.02em;
}
.topbar .container{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  min-height:38px;
  padding-top:6px;
  padding-bottom:6px;
}
.topbar strong{color:var(--accent);font-weight:700;}
.topbar-link{color:#D6D2C9;border-bottom:1px solid rgba(255,255,255,.24);}
.topbar-link:hover{color:var(--accent-2);}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(247,246,243,.94);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .22s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 8px 22px rgba(27,30,34,.07);}
.header-inner{
  display:flex;
  align-items:center;
  gap:24px;
  height:84px;
  transition:height .22s var(--ease);
}
.site-header.is-scrolled .header-inner{height:68px;}

.brand{display:inline-flex;align-items:center;gap:11px;flex:none;}
.brand-mark{
  width:28px;height:28px;
  border-radius:7px;
  background:var(--accent);
  box-shadow:inset 0 0 0 3px rgba(27,30,34,.88);
  position:relative;
  flex:none;
}
.brand-mark::after{
  content:"";
  position:absolute;
  inset:9px;
  background:var(--accent);
  border-radius:1px;
}
.brand-text{display:flex;flex-direction:column;line-height:1.1;}
.brand-main{font-size:20px;font-weight:900;letter-spacing:-.01em;color:var(--ink);}
.brand-sub{font-size:11px;letter-spacing:.16em;color:var(--faint);margin-top:3px;}

.nav-wrap{
  flex:1 1 auto;
  min-width:0;
  padding-left:24px;
  border-left:1px solid var(--line);
}
.nav-chips{
  display:flex;
  align-items:center;
  gap:8px;
  overflow-x:auto;
  scrollbar-width:none;
  -ms-overflow-style:none;
  padding:4px 0;
}
.nav-chips::-webkit-scrollbar{display:none;}
.chip{
  flex:none;
  display:inline-flex;
  align-items:center;
  height:36px;
  padding:0 15px;
  border-radius:999px;
  border:1px solid var(--line);
  font-size:14px;
  color:var(--muted);
  white-space:nowrap;
  transition:background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),box-shadow .2s var(--ease);
}
.chip:hover{background:var(--white);color:var(--ink);border-color:#CFC9BC;}
.chip.is-active{
  background:var(--ink);
  color:#FFF;
  border-color:var(--ink);
  box-shadow:inset 0 -2px 0 0 var(--accent);
}
.header-cta{flex:none;margin-left:8px;}

/* ============ 按钮 ============ */
.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:700;
  letter-spacing:.01em;
  cursor:pointer;
  transition:background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease);
}
.btn:active{transform:translateY(1px);}
.btn .arw{transition:transform .18s var(--ease);}
.btn:hover .arw{transform:translateX(4px);}
.btn-primary{background:var(--accent);color:var(--ink);border-color:var(--accent);}
.btn-primary:hover{background:var(--accent-2);border-color:var(--accent-2);color:var(--ink);}
.btn-outline{background:transparent;color:var(--ink);border-color:var(--ink);}
.btn-outline:hover{background:var(--ink);color:#FFF;}
.btn-on-dark{background:transparent;color:#F5F3EE;border-color:rgba(255,255,255,.34);}
.btn-on-dark:hover{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.6);color:#FFF;}
.btn-lg{height:52px;padding:0 28px;font-size:16px;}

/* ============ 面包屑 ============ */
.crumbs{padding:clamp(20px,3vw,30px) 0 0;}
.crumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--faint);}
.crumbs li{display:inline-flex;align-items:center;gap:8px;}
.crumbs li+li::before{content:"/";color:#C9C3B7;}
.crumbs a{color:var(--faint);}
.crumbs a:hover{color:var(--ink);}
.crumbs .current{color:var(--ink);font-weight:700;}

/* ============ Hero ============ */
.page-head{
  padding:clamp(28px,4vw,48px) 0 clamp(24px,4vw,44px);
}
.hero-grid{
  display:grid;
  grid-template-columns:minmax(0,1.2fr) minmax(0,.8fr);
  gap:clamp(28px,4vw,56px);
  align-items:center;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:9px;
  font-size:12.5px;
  font-weight:700;
  letter-spacing:.14em;
  color:var(--muted);
}
.eyebrow::before{
  content:"";
  width:10px;height:10px;
  background:var(--accent);
  border-radius:2px;
  flex:none;
}
.page-head h1{
  margin:18px 0 0;
  font-size:clamp(32px,4.6vw,54px);
  font-weight:900;
  line-height:1.1;
  letter-spacing:-.02em;
  position:relative;
}
.hl{position:relative;z-index:1;white-space:nowrap;}
.hl::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:.05em;
  height:.3em;
  background:rgba(240,180,41,.5);
  z-index:-1;
}
.hero-lead{
  margin-top:20px;
  max-width:38em;
  font-size:17px;
  color:var(--muted);
  line-height:1.85;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.hero-meta{
  margin-top:22px;
  font-size:13px;
  color:var(--faint);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  font-feature-settings:"tnum";
}
.hero-meta span.sep{color:#CFC9BC;}

/* 右侧卡片 */
.hero-card{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-1);
  padding:26px;
  position:relative;
}
.hero-card .stamp{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  letter-spacing:.12em;
  font-weight:700;
  color:var(--teal);
  border:1px solid rgba(62,92,88,.4);
  border-radius:999px;
  padding:4px 12px;
}
.hero-card h2{
  font-size:19px;
  font-weight:800;
  margin-top:16px;
  letter-spacing:-.01em;
}
.checklist{margin-top:16px;display:grid;gap:12px;}
.checklist li{
  display:flex;
  gap:11px;
  align-items:flex-start;
  font-size:14.5px;
  color:var(--muted);
  line-height:1.75;
  padding-bottom:12px;
  border-bottom:1px dashed var(--line);
}
.checklist li:last-child{border-bottom:0;padding-bottom:0;}
.checklist .tick{
  flex:none;
  width:16px;height:16px;
  margin-top:5px;
  border-radius:4px;
  background:var(--accent);
  box-shadow:inset 0 0 0 3px var(--white);
}
.hero-thumb{
  margin-top:20px;
  border-radius:var(--r-img);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--line-soft);
  aspect-ratio:16/9;
}
.hero-thumb img{width:100%;height:100%;object-fit:cover;}

/* ============ 通用板块 ============ */
.section{padding:clamp(48px,6vw,84px) 0;}
.section-head{max-width:760px;margin-bottom:clamp(28px,4vw,44px);}
.section-head h2{
  margin-top:16px;
  font-size:clamp(24px,3vw,34px);
  font-weight:800;
  line-height:1.24;
  letter-spacing:-.015em;
}
.section-head p{margin-top:14px;color:var(--muted);font-size:16px;}

/* ============ 图文交替条带 ============ */
.bands{padding:clamp(16px,2vw,24px) 0 clamp(40px,5vw,64px);}
.band{
  display:grid;
  grid-template-columns:minmax(0,7fr) minmax(0,5fr);
  gap:clamp(24px,4vw,56px);
  align-items:center;
  padding:clamp(16px,2vw,24px) 0;
}
.band + .band{margin-top:clamp(28px,4.4vw,64px);}
.band.reverse .band-text{order:2;}
.band.reverse .band-media{order:1;}
.band-index{
  font-size:13px;
  font-weight:800;
  letter-spacing:.2em;
  color:var(--faint);
  font-feature-settings:"tnum";
}
.band-text h3{
  margin-top:12px;
  font-size:clamp(21px,2.3vw,27px);
  font-weight:800;
  line-height:1.3;
  letter-spacing:-.015em;
}
.band-text p{margin-top:14px;color:var(--muted);font-size:16px;}
.band-list{margin-top:20px;display:grid;gap:11px;}
.band-list li{
  display:flex;
  gap:11px;
  align-items:flex-start;
  font-size:15.5px;
  color:var(--ink);
  line-height:1.8;
}
.band-list li::before{
  content:"";
  flex:none;
  width:6px;height:6px;
  margin-top:11px;
  background:var(--accent);
  border-radius:1px;
}
.band-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  margin-top:22px;
  font-size:14.5px;
  font-weight:700;
  color:var(--ink);
  border-bottom:2px solid var(--accent);
  padding-bottom:2px;
}
.band-link:hover{color:var(--teal);}
.band-media{
  border-radius:var(--r-img);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--line-soft);
  aspect-ratio:5/4;
  position:relative;
}
.band-media img{width:100%;height:100%;object-fit:cover;transition:transform .55s var(--ease);}
.band-media:hover img{transform:scale(1.03);}
.band-media::after{
  content:"";
  position:absolute;
  inset:auto 14px 14px auto;
  width:34px;height:34px;
  border:2px solid var(--accent);
  border-radius:4px;
  background:rgba(247,246,243,.7);
  pointer-events:none;
}

/* ============ 能力卡片 ============ */
.cap-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.cap-card{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:28px 26px;
  box-shadow:var(--shadow-1);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
  height:100%;
}
.cap-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#D8D3C8;}
.cap-num{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:34px;height:34px;
  border-radius:8px;
  background:var(--ink);
  color:var(--accent);
  font-size:13px;
  font-weight:800;
  letter-spacing:.06em;
  font-feature-settings:"tnum";
}
.cap-card h3{font-size:19px;font-weight:800;margin-top:16px;letter-spacing:-.01em;}
.cap-card p{margin-top:10px;font-size:15px;color:var(--muted);line-height:1.8;}
.cap-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px;}
.tag{
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 11px;
  border-radius:999px;
  background:#F2EFE9;
  color:var(--ink);
  font-size:12px;
  letter-spacing:.02em;
}
.tag-teal{background:transparent;border:1px solid rgba(62,92,88,.45);color:var(--teal);}

/* ============ FAQ ============ */
.faq-wrap{max-width:920px;}
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  width:100%;
  padding:22px 0;
  background:none;
  border:0;
  text-align:left;
  font-size:16.5px;
  font-weight:700;
  color:var(--ink);
  cursor:pointer;
  transition:color .18s var(--ease);
}
.faq-q:hover{color:var(--teal);}
.faq-icon{
  position:relative;
  flex:none;
  width:20px;height:20px;
  border:1px solid var(--line);
  border-radius:5px;
  transition:transform .22s var(--ease),border-color .22s var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--ink);
  transition:transform .22s var(--ease),opacity .22s var(--ease);
}
.faq-icon::before{left:4px;right:4px;top:8.5px;height:1.5px;}
.faq-icon::after{top:4px;bottom:4px;left:8.5px;width:1.5px;}
.faq-q[aria-expanded="true"] .faq-icon{border-color:var(--accent);background:var(--accent);}
.faq-q[aria-expanded="true"] .faq-icon::after{transform:scaleY(0);opacity:0;}
.faq-a{
  padding:0 0 24px;
  max-width:800px;
  font-size:15.5px;
  color:var(--muted);
  line-height:1.9;
}

/* ============ 深色 CTA 带 ============ */
.cta-band{
  background:var(--ink-2);
  border:1px solid rgba(255,255,255,.10);
  border-radius:18px;
  padding:clamp(28px,4vw,44px);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  flex-wrap:wrap;
  color:#F5F3EE;
}
.cta-band h2{
  font-size:clamp(21px,2.6vw,28px);
  font-weight:800;
  letter-spacing:-.015em;
  line-height:1.3;
}
.cta-band p{margin-top:10px;font-size:14.5px;color:#A8A49C;max-width:44em;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}

.back-row{padding:26px 0 0;}
.back-home{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14.5px;
  font-weight:700;
  color:var(--muted);
}
.back-home:hover{color:var(--ink);}
.back-home .arw{transition:transform .18s var(--ease);}
.back-home:hover .arw{transform:translateX(-4px);}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--ink-2);
  color:#A8A49C;
  margin-top:clamp(48px,6vw,88px);
  padding:clamp(48px,6vw,80px) 0 0;
  font-size:14.5px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:clamp(24px,3vw,40px);
  padding-bottom:48px;
  border-bottom:1px solid rgba(255,255,255,.10);
}
.footer-brand .brand{margin-bottom:18px;}
.footer-brand .brand-main{color:#F5F3EE;}
.footer-brand .brand-sub{color:#8A8681;}
.footer-brand p{max-width:330px;line-height:1.9;color:#A8A49C;font-size:14.5px;}
.footer-col h4{
  font-size:12.5px;
  letter-spacing:.14em;
  color:#8A8681;
  font-weight:700;
  margin-bottom:18px;
}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{color:#D6D2C9;font-size:14.5px;}
.footer-col a:hover{color:var(--accent-2);}
.contact-line{color:#A8A49C;font-size:14px;line-height:1.7;}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding:22px 0 26px;
  font-size:13px;
  color:#8A8681;
}
.fb-links{display:flex;flex-wrap:wrap;gap:18px;}
.fb-links a{color:#A8A49C;}
.fb-links a:hover{color:var(--accent-2);}

/* ============ 进场动画 ============ */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .34s var(--ease),transform .34s var(--ease);}
.reveal.is-in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition-duration:.001ms !important;}
  .reveal{opacity:1;transform:none;}
}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .hero-grid{grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);}
}
@media (max-width:991px){
  .header-inner{
    flex-wrap:wrap;
    height:auto;
    padding:14px 0 12px;
    row-gap:12px;
    gap:16px;
  }
  .site-header.is-scrolled .header-inner{height:auto;}
  .nav-wrap{
    order:3;
    width:100%;
    flex:1 1 100%;
    padding-left:0;
    border-left:0;
    border-top:1px solid var(--line);
    padding-top:10px;
  }
  .header-cta{margin-left:auto;}
  .hero-grid{grid-template-columns:1fr;}
  .hero-card{max-width:560px;}
  .band{grid-template-columns:1fr;}
  .band.reverse .band-text{order:1;}
  .band.reverse .band-media{order:2;}
  .band-media{aspect-ratio:16/10;}
  .cap-grid{grid-template-columns:1fr 1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .topbar .container{justify-content:flex-start;}
  .cap-grid{grid-template-columns:1fr;}
  .cta-band{flex-direction:column;align-items:flex-start;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .footer-brand p{max-width:none;}
  .hero-card{padding:22px;}
}
@media (max-width:520px){
  .brand-main{font-size:18px;}
  .brand-sub{font-size:10px;letter-spacing:.12em;}
  .header-cta .btn{height:40px;padding:0 14px;font-size:14px;}
  .hero-actions .btn{width:100%;}
  .crumbs ol{font-size:12.5px;}
  .band-media{aspect-ratio:4/3;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}