/* roulang page: index */
:root{
  --ink:#14161B; --ink-2:#3D424B; --muted:#797E87;
  --paper:#F6F5F2; --card:#FFFFFF; --sub:#FBFAF8;
  --line:#E7E4DD; --line-2:#D9D5CC;
  --orange:#E4571F; --orange-d:#B23F12; --orange-t:#FDEDE5;
  --teal:#0E9F8C;
  --ring:rgba(228,87,31,.28);
  --r-btn:10px; --r-pill:999px; --r-card:16px; --r-img:12px; --r-big:24px;
  --sh-1:0 1px 2px rgba(20,22,27,.05);
  --sh-2:0 16px 40px -18px rgba(20,22,27,.22);
  --sh-3:0 24px 60px -24px rgba(20,22,27,.28);
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,monospace;
  --ease:cubic-bezier(.2,.8,.2,1);

  --bs-primary:#E4571F; --bs-primary-rgb:228,87,31;
  --bs-link-color:#14161B; --bs-link-hover-color:#E4571F;
  --bs-body-bg:#F6F5F2; --bs-body-color:#14161B;
  --bs-border-color:#E7E4DD; --bs-font-sans-serif:var(--sans);
  --bs-border-radius:16px;
}
*,*::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:var(--sans);font-size:16px;line-height:1.75;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;display:block;object-fit:cover;filter:saturate(.92) contrast(1.02);}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease);}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:3px solid var(--ring);outline-offset:2px;border-radius:4px;}
::selection{background:var(--orange-t);color:var(--orange-d);}

.container{max-width:1240px;padding-left:32px;padding-right:32px;}
@media (min-width:1400px){.container{max-width:1240px;}}
@media (min-width:1200px) and (max-width:1399.98px){.container{max-width:1140px;}}

/* ============ 通用排版组件 ============ */
.eyebrow{
  font-family:var(--mono);font-size:12.5px;letter-spacing:.18em;
  text-transform:uppercase;color:var(--muted);display:inline-flex;
  align-items:center;gap:10px;margin-bottom:18px;font-weight:600;
}
.eyebrow::before{content:"";width:26px;height:2px;background:var(--orange);display:inline-block;}
.eyebrow.on-dark{color:#9EA3AD;}
h1{font-size:clamp(32px,4.4vw,54px);line-height:1.08;font-weight:900;letter-spacing:-.02em;}
h2{font-size:clamp(24px,3vw,36px);line-height:1.2;font-weight:800;letter-spacing:-.01em;}
h3{font-size:22px;line-height:1.4;font-weight:700;}
p{color:var(--ink-2);}
.lead{font-size:17px;line-height:1.85;color:var(--ink-2);}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums;}
.sec{padding:104px 0;}
.sec-sub{background:var(--sub);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:40px;flex-wrap:wrap;}
.sec-head p{max-width:560px;font-size:16px;line-height:1.8;color:var(--muted);margin-top:12px;}

/* ============ 按钮 ============ */
.btn-main,.btn-ghost,.btn-soft{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-btn);
  font-weight:600;font-size:15px;border:1px solid transparent;cursor:pointer;
  position:relative;overflow:hidden;transition:all .25s var(--ease);white-space:nowrap;
}
.btn-main{background:var(--ink);color:#fff;}
.btn-main span{position:relative;z-index:2;}
.btn-main::before{
  content:"";position:absolute;inset:0;background:var(--orange);
  transform:translateX(-101%);transition:transform .32s var(--ease);z-index:1;
}
.btn-main:hover::before{transform:translateX(0);}
.btn-main:hover{color:#fff;box-shadow:var(--sh-2);}
.btn-ghost{background:transparent;border-color:var(--line-2);color:var(--ink);}
.btn-ghost:hover{border-color:var(--ink);background:var(--card);}
.btn-soft{background:var(--orange);color:#fff;}
.btn-soft:hover{background:var(--orange-d);color:#fff;}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-block{width:100%;}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:15px;
  color:var(--ink);position:relative;padding-bottom:3px;
}
.btn-text::after{
  content:"";position:absolute;left:0;bottom:0;height:1px;width:0;
  background:var(--orange);transition:width .22s var(--ease);
}
.btn-text:hover{color:var(--orange);}
.btn-text:hover::after{width:100%;}

/* ============ Chip / 标签 ============ */
.chip{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:var(--r-pill);font-size:13px;font-weight:500;line-height:1;
}
.chip-orange{background:var(--orange-t);color:var(--orange-d);}
.chip-gray{background:#EFEDE8;color:var(--ink-2);}
.chip-ink{background:var(--ink);color:#fff;}
.chip-teal{background:rgba(14,159,140,.12);color:#0A7A6B;}

/* ============ 顶部导航 ============ */
.site-header{position:sticky;top:0;z-index:1030;background:var(--card);transition:box-shadow .25s var(--ease);}
.site-header.scrolled{box-shadow:0 8px 30px -18px rgba(20,22,27,.35);}
.brandbar{border-bottom:1px solid var(--line);}
.brandbar-inner{height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px;}
.brand{display:flex;align-items:center;gap:11px;}
.brand-mark{
  width:28px;height:28px;border-radius:8px;background:var(--ink);
  display:grid;place-items:center;flex:none;position:relative;overflow:hidden;
}
.brand-mark::before{
  content:"";width:12px;height:12px;background:var(--orange);
  clip-path:polygon(0 0,100% 0,100% 62%,62% 100%,0 100%);
}
.brand-name{font-weight:700;font-size:19px;letter-spacing:.02em;color:var(--ink);}
.brandbar-tools{display:flex;align-items:center;gap:14px;}
.search-pill{
  display:flex;align-items:center;gap:9px;height:42px;padding:0 16px;
  background:var(--paper);border:1px solid transparent;border-radius:var(--r-pill);
  width:280px;transition:all .25s var(--ease);
}
.search-pill:focus-within{border-color:var(--orange);background:#fff;box-shadow:0 0 0 3px var(--ring);}
.search-pill svg{flex:none;opacity:.55;}
.search-pill input{border:0;background:transparent;outline:none;width:100%;font-size:14px;}
.search-pill input::placeholder{color:var(--muted);}
.burger{
  display:none;width:44px;height:44px;border:1px solid var(--line-2);
  background:#fff;border-radius:10px;align-items:center;justify-content:center;cursor:pointer;
}
.burger span{display:block;width:18px;height:2px;background:var(--ink);position:relative;}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);}
.burger span::before{top:-6px;}
.burger span::after{top:6px;}

.channelbar{background:var(--sub);border-bottom:1px solid var(--line);}
.channelbar-inner{height:52px;display:flex;align-items:center;position:relative;}
.channel-tabs{display:flex;gap:8px;overflow-x:auto;scrollbar-width:none;padding:8px 0;}
.channel-tabs::-webkit-scrollbar{display:none;}
.channel-pill{
  height:36px;padding:0 18px;border-radius:var(--r-pill);display:inline-flex;
  align-items:center;font-size:14px;font-weight:500;color:var(--ink-2);
  white-space:nowrap;transition:all .2s var(--ease);
}
.channel-pill:hover{background:#EFEDE8;color:var(--ink);}
.channel-pill.active{background:var(--ink);color:#fff;}

/* 移动抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(20,22,27,.42);opacity:0;
  pointer-events:none;transition:opacity .25s var(--ease);z-index:1050;
}
.drawer-mask.show{opacity:1;pointer-events:auto;}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:290px;background:#fff;z-index:1060;
  transform:translateX(101%);transition:transform .3s var(--ease);
  display:flex;flex-direction:column;padding:24px 22px;gap:8px;
}
.drawer.show{transform:translateX(0);}
.drawer h4{font-size:13px;letter-spacing:.16em;color:var(--muted);font-family:var(--mono);margin-bottom:8px;}
.drawer a.drawer-link{
  display:block;padding:13px 14px;border-radius:10px;font-size:15.5px;font-weight:500;
  color:var(--ink-2);position:relative;
}
.drawer a.drawer-link.active{background:var(--sub);color:var(--ink);font-weight:700;}
.drawer a.drawer-link.active::before{
  content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;
  background:var(--orange);border-radius:3px;
}
.drawer-close{
  align-self:flex-end;width:40px;height:40px;border-radius:10px;border:1px solid var(--line-2);
  background:#fff;cursor:pointer;font-size:19px;line-height:1;color:var(--ink-2);
}
.drawer-foot{margin-top:auto;display:grid;gap:10px;}

/* ============ Hero ============ */
.hero{position:relative;padding:88px 0 96px;overflow:hidden;background:var(--paper);}
.hero-grid-bg{
  position:absolute;inset:0;pointer-events:none;opacity:.055;
  background-image:radial-gradient(var(--ink) 1px,transparent 1px);
  background-size:24px 24px;
}
.hero-inner{position:relative;display:grid;grid-template-columns:7fr 5fr;gap:64px;align-items:center;}
.hero h1{margin-bottom:22px;}
.hero .hero-sub{font-size:18px;line-height:1.8;color:var(--ink-2);max-width:560px;margin-bottom:34px;}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:38px;}
.trust-row{display:flex;gap:30px;flex-wrap:wrap;}
.trust-item{display:flex;align-items:center;gap:9px;font-size:14px;color:var(--ink-2);font-weight:500;}
.trust-item i{
  width:20px;height:20px;border-radius:6px;background:var(--orange-t);
  display:grid;place-items:center;flex:none;
}
.trust-item i::before{content:"";width:8px;height:8px;border-left:2px solid var(--orange);border-bottom:2px solid var(--orange);transform:rotate(-45deg);margin-top:-2px;}
.hero-media{position:relative;}
.hero-media img{
  width:100%;aspect-ratio:4/3;border-radius:20px;border:1px solid var(--line-2);
  box-shadow:var(--sh-2);
}
.hero-media::after{content:"";position:absolute;inset:0;border-radius:20px;background:rgba(20,22,27,.06);pointer-events:none;}
.hero-chip{
  position:absolute;right:-8px;bottom:-16px;background:#fff;border:1px solid var(--line);
  border-radius:14px;padding:12px 18px;box-shadow:var(--sh-2);font-family:var(--mono);
  display:flex;align-items:center;gap:10px;
}
.hero-chip b{font-size:20px;font-weight:600;color:var(--ink);}
.hero-chip small{font-size:12px;color:var(--muted);letter-spacing:.04em;}

/* ============ 指标看板 ============ */
.metrics{display:grid;grid-template-columns:repeat(4,1fr);}
.metric{padding:34px 26px;border-left:1px solid var(--line);}
.metric:first-child{border-left:0;}
.metric .num{
  font-family:var(--mono);font-variant-numeric:tabular-nums;font-size:52px;
  line-height:1;font-weight:600;color:var(--ink);letter-spacing:-.02em;
}
.metric .num em{font-style:normal;font-size:18px;font-weight:500;color:var(--ink-2);margin-left:5px;}
.metric .lbl{font-size:14px;font-weight:600;margin-top:14px;color:var(--ink);}
.metric .rng{font-size:12px;color:var(--muted);margin-top:4px;font-family:var(--mono);}

/* ============ Bento 服务矩阵 ============ */
.bento{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;}
.bcard{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px;transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.bcard:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--line-2);}
.bcard .ico{
  width:24px;height:24px;color:var(--orange);margin-bottom:18px;
}
.bcard h3{font-size:18px;margin-bottom:10px;font-weight:600;}
.bcard p{font-size:15px;line-height:1.75;color:var(--muted);}
.bcard-wide{display:flex;gap:32px;align-items:center;}
.bcard-wide .mini{display:flex;gap:28px;margin-left:auto;}
.bcard-wide .mini b{font-family:var(--mono);font-size:22px;display:block;font-weight:600;}
.bcard-wide .mini small{font-size:12px;color:var(--muted);}
.b-hero{grid-column:span 6;grid-row:span 2;padding:0;overflow:hidden;display:flex;flex-direction:column;}
.b-hero .media{overflow:hidden;border-radius:var(--r-card) var(--r-card) 0 0;}
.b-hero .media img{width:100%;aspect-ratio:16/9;transition:transform .45s var(--ease);}
.b-hero:hover .media img{transform:scale(1.03);}
.b-hero .body{padding:28px;display:flex;flex-direction:column;gap:12px;flex:1;}
.b-hero h3{font-size:21px;}
.b-sm{grid-column:span 3;}
.b-wide{grid-column:span 6;}

/* ============ 结果对比 ============ */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-bottom:52px;}
.cmp-col{border-radius:var(--r-card);padding:30px;border:1px solid var(--line);background:#fff;}
.cmp-col.after{background:var(--orange-t);border-color:#F6D9C9;}
.cmp-col h4{font-size:16px;font-weight:700;margin-bottom:18px;display:flex;align-items:center;gap:10px;}
.cmp-col h4 .dot{width:8px;height:8px;border-radius:50%;background:var(--muted);}
.cmp-col.after h4 .dot{background:var(--orange);}
.cmp-col ul li{display:flex;gap:10px;font-size:15px;line-height:1.75;color:var(--ink-2);padding:8px 0;}
.cmp-col ul li::before{content:"";width:6px;height:6px;border-radius:2px;background:var(--line-2);flex:none;margin-top:11px;}
.cmp-col.after ul li::before{background:var(--orange);}
.bars{display:grid;gap:26px;}
.bar-row{display:grid;grid-template-columns:170px 1fr 92px;align-items:center;gap:20px;}
.bar-row .bar-lbl{font-size:14.5px;font-weight:600;}
.bar-track{display:grid;gap:8px;}
.bar{height:8px;border-radius:var(--r-pill);background:#E4E1DA;overflow:hidden;position:relative;}
.bar span{position:absolute;left:0;top:0;bottom:0;width:0;border-radius:var(--r-pill);transition:width .7s var(--ease);}
.bar.base span{background:#C6C2B9;}
.bar.orange span{background:var(--orange);}
.bar.teal span{background:var(--teal);}
.bar-row .bar-val{font-family:var(--mono);font-size:15px;text-align:right;font-weight:600;}

/* ============ 最新信息（CMS） ============ */
.news-layout{display:grid;grid-template-columns:7fr 5fr;gap:32px;}
.news-main-link{display:flex;flex-direction:column;height:100%;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);}
.news-main-link:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--line-2);}
.news-main-media{overflow:hidden;}
.news-main-media img{width:100%;aspect-ratio:16/9;transition:transform .45s var(--ease);}
.news-main-link:hover .news-main-media img{transform:scale(1.03);}
.news-main-body{padding:28px;display:flex;flex-direction:column;gap:14px;}
.news-main-body h3{font-size:21px;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-main-body p{font-size:15px;line-height:1.75;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-meta{display:flex;align-items:center;gap:16px;font-size:13px;color:var(--muted);font-family:var(--mono);margin-top:auto;}
.news-meta .read{margin-left:auto;font-family:var(--sans);font-weight:600;color:var(--ink);}
.news-main-link:hover .read{color:var(--orange);}
.news-list{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;}
.news-item{display:flex;gap:16px;padding:18px 22px;border-bottom:1px solid var(--line);transition:transform .2s var(--ease),background .2s var(--ease);}
.news-item:last-child{border-bottom:0;}
.news-item:hover{transform:translateX(2px);background:var(--sub);}
.news-item img{width:48px;height:48px;border-radius:8px;flex:none;}
.news-item .txt{min-width:0;}
.news-item h4{font-size:15.5px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;transition:color .2s var(--ease);}
.news-item:hover h4{color:var(--orange);}
.news-item .sub{font-size:12.5px;color:var(--muted);font-family:var(--mono);margin-top:6px;display:flex;gap:10px;}
.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;padding:64px 24px;background:#fff;border:1px dashed var(--line-2);border-radius:var(--r-card);text-align:center;}
.empty-state svg{width:48px;height:48px;color:var(--muted);}
.empty-state p{font-size:15px;color:var(--muted);}

/* ============ 证据 / 评价 ============ */
.proof{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.proof-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:30px;display:flex;flex-direction:column;gap:16px;transition:transform .25s var(--ease),box-shadow .25s var(--ease);}
.proof-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.proof-card .quote{font-size:15.5px;line-height:1.85;color:var(--ink-2);}
.proof-card .who{display:flex;align-items:center;gap:12px;margin-top:auto;padding-top:8px;border-top:1px solid var(--line);}
.proof-card .who img{width:40px;height:40px;border-radius:50%;}
.proof-card .who b{font-size:14px;display:block;}
.proof-card .who small{font-size:12.5px;color:var(--muted);}
.proof-badges{display:flex;gap:12px;flex-wrap:wrap;margin-top:34px;}

/* ============ FAQ ============ */
.faq-layout{display:grid;grid-template-columns:4fr 8fr;gap:56px;align-items:start;}
.faq-aside{position:sticky;top:150px;}
.faq-aside p{margin-top:16px;font-size:15.5px;line-height:1.8;color:var(--muted);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;background:transparent;border:0;padding:22px 0;display:flex;align-items:center;gap:18px;
  cursor:pointer;text-align:left;
}
.faq-num{font-family:var(--mono);font-size:13px;color:var(--muted);flex:none;width:26px;}
.faq-text{font-size:17px;font-weight:600;color:var(--ink);flex:1;}
.faq-icon{
  width:22px;height:22px;flex:none;position:relative;transition:transform .3s var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--ink);border-radius:2px;transition:opacity .3s var(--ease),background .2s var(--ease);
}
.faq-icon::before{left:0;right:0;top:10px;height:2px;}
.faq-icon::after{top:0;bottom:0;left:10px;width:2px;}
.faq-item.open .faq-icon::after{opacity:0;}
.faq-item.open .faq-icon{transform:rotate(180deg);}
.faq-item.open .faq-icon::before{background:var(--orange);}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .32s var(--ease);}
.faq-item.open .faq-a{grid-template-rows:1fr;}
.faq-a-inner{overflow:hidden;}
.faq-a-inner p{font-size:15px;line-height:1.9;color:var(--muted);padding:0 0 24px 44px;}

/* ============ CTA / 表单 ============ */
.cta-band{padding:0 0 104px;}
.cta-card{
  background:var(--ink);border-radius:var(--r-big);padding:56px;color:#fff;
  display:grid;grid-template-columns:5fr 7fr;gap:56px;box-shadow:var(--sh-3);
}
.cta-card h2{color:#fff;}
.cta-card .cta-lead{color:#B9BDC6;font-size:16px;line-height:1.85;margin-top:18px;}
.cta-points{display:grid;gap:14px;margin-top:30px;}
.cta-points li{display:flex;gap:11px;font-size:15px;color:#D5D8DE;}
.cta-points li i{
  width:20px;height:20px;border-radius:50%;background:rgba(228,87,31,.22);flex:none;
  display:grid;place-items:center;margin-top:4px;
}
.cta-points li i::before{content:"";width:7px;height:7px;border-left:2px solid var(--orange);border-bottom:2px solid var(--orange);transform:rotate(-45deg);margin-top:-2px;}
.form-card{background:#fff;border-radius:var(--r-card);padding:32px;}
.form-card .fg{margin-bottom:18px;}
.form-card label{display:block;font-size:13px;font-weight:600;color:var(--ink-2);margin-bottom:8px;}
.form-card .form-control,.form-card .form-select{
  height:48px;border-radius:var(--r-btn);border:1px solid var(--line-2);font-size:15px;
  padding:0 14px;background:#fff;box-shadow:none;transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.form-card textarea.form-control{height:auto;min-height:104px;padding:12px 14px;line-height:1.7;resize:vertical;}
.form-card .form-control:focus,.form-card .form-select:focus{
  border-color:var(--orange);box-shadow:0 0 0 3px var(--ring);outline:none;
}
.form-note{font-size:12px;color:var(--muted);margin-top:14px;line-height:1.7;}
.form-status{font-size:13.5px;margin-top:12px;display:none;}
.form-status.ok{display:block;color:#0A7A6B;}
.form-status.err{display:block;color:#C0392B;}

/* ============ 页脚 ============ */
.site-footer{background:var(--paper);border-top:1px solid var(--line);padding:72px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand .brand{margin-bottom:18px;}
.footer-brand p{font-size:14.5px;line-height:1.8;color:var(--muted);max-width:300px;}
.footer-col h5{font-size:14px;font-weight:700;margin-bottom:18px;letter-spacing:.02em;}
.footer-col ul{display:grid;gap:11px;}
.footer-col a{font-size:14.5px;color:var(--muted);position:relative;display:inline-block;}
.footer-col a::after{content:"";position:absolute;left:0;bottom:-2px;height:1px;width:0;background:var(--orange);transition:width .22s var(--ease);}
.footer-col a:hover{color:var(--orange);}
.footer-col a:hover::after{width:100%;}
.footer-col .mono{font-size:14.5px;color:var(--ink-2);}
.footer-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;
  font-size:13px;color:var(--muted);
}
.footer-bottom .mono{font-family:var(--mono);}

/* ============ 返回顶部 ============ */
.to-top{
  position:fixed;right:26px;bottom:26px;width:44px;height:44px;border-radius:50%;
  background:var(--ink);color:#fff;border:0;display:grid;place-items:center;cursor:pointer;
  opacity:0;pointer-events:none;transition:all .25s var(--ease);z-index:900;
}
.to-top.show{opacity:1;pointer-events:auto;}
.to-top:hover{background:var(--orange);}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .24s var(--ease),transform .24s var(--ease);}
.reveal.in{opacity:1;transform:none;}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .hero-inner{gap:44px;}
  .metric .num{font-size:44px;}
  .bar-row{grid-template-columns:140px 1fr 80px;}
}
@media (max-width:991.98px){
  .sec{padding:80px 0;}
  .container{padding-left:24px;padding-right:24px;}
  .search-pill{display:none;}
  .burger{display:flex;}
  .hero{padding:64px 0 72px;}
  .hero-inner{grid-template-columns:1fr;gap:44px;}
  .hero-media img{aspect-ratio:16/10;}
  .metrics{grid-template-columns:repeat(2,1fr);}
  .metric{border-left:0;border-top:1px solid var(--line);padding:28px 0;}
  .metric:nth-child(1),.metric:nth-child(2){border-top:0;}
  .metric:nth-child(even){padding-left:24px;border-left:1px solid var(--line);}
  .bento{grid-template-columns:repeat(6,1fr);gap:20px;}
  .b-hero{grid-column:span 6;grid-row:auto;}
  .b-sm{grid-column:span 3;}
  .b-wide{grid-column:span 6;}
  .compare{grid-template-columns:1fr;}
  .news-layout{grid-template-columns:1fr;}
  .proof{grid-template-columns:1fr;}
  .faq-layout{grid-template-columns:1fr;gap:32px;}
  .faq-aside{position:static;}
  .cta-card{grid-template-columns:1fr;padding:40px;gap:36px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
}
@media (max-width:575.98px){
  .sec{padding:56px 0;}
  .container{padding-left:20px;padding-right:20px;}
  .brandbar-inner{height:64px;}
  .brand-name{font-size:17px;}
  h1{font-size:32px;}
  h2{font-size:24px;}
  h3{font-size:18px;}
  .hero .hero-sub{font-size:16px;}
  .hero-actions .btn-main,.hero-actions .btn-ghost{width:100%;}
  .metrics{grid-template-columns:1fr;}
  .metric{border-left:0 !important;border-top:1px solid var(--line);padding:24px 0 !important;}
  .metric:first-child{border-top:0;}
  .bento{grid-template-columns:1fr;}
  .b-hero,.b-sm,.b-wide{grid-column:span 1;}
  .bcard-wide{flex-direction:column;align-items:flex-start;}
  .bcard-wide .mini{margin-left:0;gap:22px;}
  .bar-row{grid-template-columns:1fr;gap:10px;}
  .bar-row .bar-val{text-align:left;}
  .cta-card{padding:28px 20px;border-radius:18px;}
  .form-card{padding:22px;}
  .footer-grid{grid-template-columns:1fr;}
  .faq-a-inner p{padding-left:0;}
  .to-top{right:16px;bottom:16px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: article */
:root{
  --ink:#14161B;
  --ink-2:#3D424B;
  --muted:#797E87;
  --paper:#F6F5F2;
  --card:#FFFFFF;
  --sub:#FBFAF8;
  --line:#E7E4DD;
  --line-strong:#D9D5CC;
  --orange:#E4571F;
  --orange-deep:#B23F12;
  --orange-soft:#FDEDE5;
  --teal:#0E9F8C;
  --ring:rgba(228,87,31,.28);
  --r-btn:10px;
  --r-card:16px;
  --r-img:12px;
  --r-input:10px;
  --r-lg:24px;
  --sh-1:0 1px 2px rgba(20,22,27,.05);
  --sh-2:0 16px 40px -18px rgba(20,22,27,.22);
  --sh-3:0 24px 60px -24px rgba(20,22,27,.28);
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  --bs-primary:#E4571F;
  --bs-primary-rgb:228,87,31;
  --bs-link-color:#14161B;
  --bs-link-hover-color:#E4571F;
  --bs-body-bg:#F6F5F2;
  --bs-body-color:#14161B;
  --bs-border-color:#E7E4DD;
  --bs-font-sans-serif:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--ink);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--orange);}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
h1,h2,h3,h4,h5{margin:0;font-weight:800;letter-spacing:-.01em;line-height:1.25;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;}
.container{width:100%;max-width:1240px;margin-inline:auto;padding-inline:32px;}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--ink);color:#fff;padding:10px 16px;border-radius:0 0 10px 0;z-index:2000;}
.skip-link:focus{left:0;color:#fff;}
:focus-visible{outline:3px solid var(--ring);outline-offset:2px;border-radius:6px;}

/* ============ 顶部品牌行 ============ */
.site-header{position:sticky;top:0;z-index:1030;background:var(--card);}
.site-header.is-scrolled{box-shadow:0 6px 24px -14px rgba(20,22,27,.28);}
.brandbar{border-bottom:1px solid var(--line);background:var(--card);}
.brandbar-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:72px;}
.brand{display:inline-flex;align-items:center;gap:10px;}
.brand-mark{
  width:26px;height:26px;flex:0 0 26px;border-radius:7px;background:var(--ink);
  position:relative;clip-path:polygon(50% 0,100% 26%,100% 74%,50% 100%,0 74%,0 26%);
}
.brand-mark::after{content:"";position:absolute;inset:8px;border-radius:3px;background:var(--orange);}
.brand-name{font-size:19px;font-weight:800;letter-spacing:.02em;color:var(--ink);}
.brandbar-tools{display:flex;align-items:center;gap:12px;}
.search-pill{
  display:flex;align-items:center;gap:8px;height:40px;padding:0 14px;border-radius:999px;
  background:var(--paper);border:1px solid var(--line);color:var(--muted);transition:border-color .2s ease,background .2s ease;
}
.search-pill:focus-within{border-color:var(--orange);background:#fff;box-shadow:0 0 0 3px var(--ring);}
.search-pill input{width:250px;border:0;background:transparent;outline:none;font-size:14px;color:var(--ink);}
.search-pill input::placeholder{color:var(--muted);}
.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 26px;
  border-radius:var(--r-btn);border:1px solid var(--ink);background:var(--ink);color:#fff;font-weight:600;font-size:15px;
  position:relative;overflow:hidden;cursor:pointer;transition:color .24s ease,border-color .24s ease,transform .2s ease;
}
.btn-main span{position:relative;z-index:2;}
.btn-main::before{content:"";position:absolute;inset:0;background:var(--orange);transform:translateX(-101%);transition:transform .28s cubic-bezier(.2,.8,.2,1);z-index:1;}
.btn-main:hover{color:#fff;border-color:var(--orange);}
.btn-main:hover::before{transform:translateX(0);}
.btn-main.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 24px;border-radius:var(--r-btn);
  background:transparent;border:1px solid var(--line-strong);color:var(--ink);font-weight:600;font-size:15px;transition:border-color .2s ease,background .2s ease;
}
.btn-ghost:hover{border-color:var(--ink);background:var(--paper);color:var(--ink);}
.btn-light{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 26px;border-radius:var(--r-btn);
  background:#fff;border:1px solid #fff;color:var(--ink);font-weight:600;font-size:15px;transition:background .2s ease,transform .2s ease;
}
.btn-light:hover{background:var(--orange-soft);color:var(--orange-deep);transform:translateY(-1px);}
.burger{display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:10px;background:var(--card);position:relative;cursor:pointer;}
.burger span,.burger span::before,.burger span::after{position:absolute;left:50%;width:18px;height:2px;background:var(--ink);transform:translateX(-50%);content:"";transition:transform .2s ease;}
.burger span{top:50%;margin-top:-1px;}
.burger span::before{top:-6px;}
.burger span::after{top:6px;}

/* ============ 频道行 ============ */
.channelbar{background:var(--sub);border-bottom:1px solid var(--line);}
.channelbar-inner{padding-block:8px;}
.channel-tabs{
  display:flex;align-items:center;gap:8px;overflow-x:auto;padding-inline:16px;margin-inline:-16px;
  scrollbar-width:none;
  -webkit-mask-image:linear-gradient(90deg,transparent 0,#000 18px,#000 calc(100% - 18px),transparent 100%);
  mask-image:linear-gradient(90deg,transparent 0,#000 18px,#000 calc(100% - 18px),transparent 100%);
}
.channel-tabs::-webkit-scrollbar{display:none;}
.channel-pill{
  display:inline-flex;align-items:center;height:36px;padding:0 18px;border-radius:999px;white-space:nowrap;
  font-size:14px;font-weight:600;color:var(--ink-2);background:transparent;transition:background .2s ease,color .2s ease;
}
.channel-pill:hover{background:#EFEDE8;color:var(--ink);}
.channel-pill.active{background:var(--ink);color:#fff;}

/* ============ 页面头部 ============ */
.page-head{padding:44px 0 28px;border-bottom:1px solid var(--line);background:linear-gradient(180deg,#FFFFFF 0%,var(--paper) 100%);}
.crumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--muted);margin-bottom:18px;}
.crumb a{color:var(--ink-2);}
.crumb a:hover{color:var(--orange);}
.crumb .sep{color:var(--line-strong);}
.crumb .now{color:var(--muted);max-width:52ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.page-title{
  font-size:clamp(28px,4.2vw,44px);line-height:1.25;font-weight:900;letter-spacing:-.02em;max-width:22ch;
}
.page-meta{display:flex;align-items:center;flex-wrap:wrap;gap:12px;margin-top:20px;font-size:13px;color:var(--muted);}
.chip{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;font-size:13px;font-weight:600;}
.chip-cat{background:var(--orange-soft);color:var(--orange-deep);}
.chip-time{background:#EFEDE8;color:var(--ink-2);font-family:var(--font-mono);}
.dot{width:4px;height:4px;border-radius:50%;background:var(--line-strong);display:inline-block;}

/* ============ 文章布局 ============ */
.article-wrap{display:grid;grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:48px;padding-top:56px;padding-bottom:72px;}
.article-main{min-width:0;}
.prose{max-width:740px;font-size:17px;line-height:1.95;color:var(--ink-2);}
.prose>*+*{margin-top:1.3em;}
.prose p{margin:0;}
.prose h2{font-size:24px;font-weight:700;color:var(--ink);margin-top:48px;margin-bottom:16px;position:relative;padding-left:36px;}
.prose h2::before{content:"";position:absolute;left:0;top:.62em;width:28px;height:3px;border-radius:2px;background:var(--orange);}
.prose h3{font-size:19px;font-weight:700;color:var(--ink);margin-top:32px;margin-bottom:12px;}
.prose h4{font-size:17px;font-weight:700;color:var(--ink);margin-top:24px;}
.prose ul,.prose ol{padding-left:0;display:grid;gap:10px;}
.prose ul li{position:relative;padding-left:22px;}
.prose ul li::before{content:"";position:absolute;left:2px;top:.72em;width:7px;height:7px;border-radius:2px;background:var(--orange);}
.prose ol{counter-reset:li;}
.prose ol li{position:relative;padding-left:30px;counter-increment:li;}
.prose ol li::before{
  content:counter(li,decimal-leading-zero);position:absolute;left:0;top:0;font-family:var(--font-mono);font-size:13px;font-weight:700;color:var(--orange);
}
.prose blockquote{
  margin:0;padding:20px 24px;background:var(--sub);border-left:3px solid var(--orange);border-radius:0 var(--r-img) var(--r-img) 0;color:var(--ink-2);
}
.prose img{border-radius:var(--r-img);width:100%;filter:saturate(.92) contrast(1.02);}
.prose a{color:var(--orange-deep);border-bottom:1px solid rgba(228,87,31,.4);}
.prose a:hover{color:var(--orange);}
.prose table{width:100%;border-collapse:collapse;font-size:15px;display:block;overflow-x:auto;}
.prose th,.prose td{border-bottom:1px solid var(--line);padding:12px 14px;text-align:left;}
.prose th{background:var(--sub);font-weight:700;color:var(--ink);white-space:nowrap;}
.prose code{font-family:var(--font-mono);background:var(--sub);border:1px solid var(--line);border-radius:6px;padding:1px 6px;font-size:14px;}
.prose strong{color:var(--ink);font-weight:700;}

.empty-state{
  max-width:740px;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:48px 32px;text-align:center;box-shadow:var(--sh-1);
}
.empty-icon{width:56px;height:56px;margin:0 auto 16px;border-radius:14px;background:var(--orange-soft);display:flex;align-items:center;justify-content:center;color:var(--orange-deep);}
.empty-state h2{font-size:20px;margin-bottom:8px;}
.empty-state p{color:var(--muted);font-size:15px;margin-bottom:22px;}

.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:44px;padding-top:24px;border-top:1px solid var(--line);}
.tag{display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:999px;background:var(--card);border:1px solid var(--line);font-size:13px;color:var(--ink-2);}
.tag:hover{border-color:var(--orange);color:var(--orange-deep);background:var(--orange-soft);}

.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:28px;}
.post-nav a{
  display:block;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:20px 22px;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.post-nav a:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--line-strong);color:var(--ink);}
.post-nav .dir{font-size:12px;letter-spacing:.18em;color:var(--muted);text-transform:uppercase;display:block;margin-bottom:8px;}
.post-nav .tt{font-size:16px;font-weight:700;color:var(--ink);}

/* ============ 侧栏 ============ */
.article-side{min-width:0;}
.side-sticky{position:sticky;top:152px;display:grid;gap:20px;}
.side-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:24px;box-shadow:var(--sh-1);}
.side-card h4{font-size:14px;font-weight:700;letter-spacing:.06em;color:var(--muted);margin-bottom:16px;}
.side-list{display:grid;gap:12px;}
.side-list li{display:flex;justify-content:space-between;gap:12px;font-size:14px;color:var(--ink-2);}
.side-list .k{color:var(--muted);}
.side-links{display:grid;gap:2px;}
.side-links a{display:flex;align-items:center;justify-content:space-between;padding:11px 0;font-size:15px;font-weight:600;border-bottom:1px solid var(--line);}
.side-links a:last-child{border-bottom:0;}
.side-links a:hover{color:var(--orange);}
.side-links svg{opacity:.5;}

/* ============ 相关频道 ============ */
.related{padding-bottom:88px;}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;flex-wrap:wrap;}
.eyebrow{display:inline-block;font-size:12px;letter-spacing:.18em;color:var(--muted);font-weight:700;margin-bottom:12px;}
.sec-head h2{font-size:clamp(24px,3vw,32px);}
.sec-head p{color:var(--muted);font-size:15px;margin-top:8px;}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.rc-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;display:flex;flex-direction:column;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;}
.rc-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--line-strong);}
.rc-media{aspect-ratio:4/3;overflow:hidden;background:var(--sub);}
.rc-media img{width:100%;height:100%;object-fit:cover;filter:saturate(.92) contrast(1.02);transition:transform .35s ease;}
.rc-card:hover .rc-media img{transform:scale(1.03);}
.rc-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.rc-body h3{font-size:17px;font-weight:700;}
.rc-body p{font-size:14px;line-height:1.75;color:var(--muted);}
.rc-more{margin-top:auto;font-size:14px;font-weight:600;color:var(--orange-deep);display:inline-flex;align-items:center;gap:6px;}

/* ============ CTA 条 ============ */
.cta-band{padding-bottom:88px;}
.cta-inner{
  background:var(--ink);border-radius:var(--r-lg);padding:40px 48px;color:#fff;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  box-shadow:var(--sh-3);
}
.cta-inner h2{font-size:clamp(22px,2.6vw,28px);color:#fff;}
.cta-inner p{color:rgba(255,255,255,.72);font-size:15px;margin-top:10px;max-width:60ch;}

/* ============ 页脚 ============ */
.site-footer{border-top:1px solid var(--line);background:var(--sub);padding:64px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;}
.footer-brand p{font-size:14px;color:var(--muted);margin-top:16px;max-width:34ch;line-height:1.8;}
.footer-col h5{font-size:14px;font-weight:700;color:var(--ink);margin-bottom:18px;}
.footer-col ul{display:grid;gap:12px;}
.footer-col li{font-size:14px;color:var(--muted);}
.footer-col a{position:relative;color:var(--ink-2);}
.footer-col a::after{content:"";position:absolute;left:0;bottom:-3px;height:1px;width:0;background:var(--orange);transition:width .2s ease;}
.footer-col a:hover{color:var(--orange);}
.footer-col a:hover::after{width:100%;}
.footer-col .mono{font-size:13px;color:var(--ink-2);}
.footer-bottom{
  margin-top:48px;padding-top:20px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--muted);
}

/* ============ 移动抽屉 ============ */
.drawer-mask{position:fixed;inset:0;background:rgba(20,22,27,.4);opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;z-index:1040;}
.drawer-mask.open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:320px;max-width:86vw;background:#fff;z-index:1050;transform:translateX(102%);
  transition:transform .28s cubic-bezier(.2,.8,.2,1);display:flex;flex-direction:column;padding:24px;gap:8px;overflow-y:auto;
}
.drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px;}
.drawer-close{width:38px;height:38px;border-radius:10px;border:1px solid var(--line);background:#fff;cursor:pointer;font-size:18px;line-height:1;color:var(--ink);}
.drawer a.nav-item{display:block;padding:14px 12px;border-radius:10px;font-weight:600;color:var(--ink-2);border-left:3px solid transparent;}
.drawer a.nav-item:hover{background:var(--paper);color:var(--ink);}
.drawer a.nav-item.active{border-left-color:var(--orange);background:var(--paper);color:var(--ink);}
.drawer-foot{margin-top:auto;display:grid;gap:12px;padding-top:20px;border-top:1px solid var(--line);}
.drawer-foot .btn-main{width:100%;}

/* ============ 返回顶部 ============ */
.to-top{
  position:fixed;right:24px;bottom:24px;width:44px;height:44px;border-radius:50%;background:var(--ink);color:#fff;border:0;cursor:pointer;
  display:flex;align-items:center;justify-content:center;opacity:0;visibility:hidden;transform:translateY(8px);transition:all .25s ease;z-index:1020;
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{background:var(--orange);}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .24s ease,transform .24s ease;}
.reveal.in{opacity:1;transform:none;}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .container{max-width:1140px;}
  .article-wrap{grid-template-columns:1fr;gap:40px;}
  .side-sticky{position:static;}
}
@media (max-width:991px){
  .brandbar-inner{min-height:64px;}
  .search-pill{display:none;}
  .burger{display:inline-flex;align-items:center;justify-content:center;}
  .channelbar{position:sticky;top:64px;}
  .page-head{padding:32px 0 22px;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-inner{padding:32px 28px;}
}
@media (max-width:767px){
  .container{padding-inline:20px;}
  .prose{font-size:16px;}
  .prose h2{font-size:21px;padding-left:30px;}
  .prose h3{font-size:18px;}
  .article-wrap{padding-top:36px;padding-bottom:52px;}
  .post-nav{grid-template-columns:1fr;}
  .related,.cta-band{padding-bottom:56px;}
  .to-top{right:16px;bottom:16px;}
}
@media (max-width:575px){
  .brand-name{font-size:17px;}
  .card-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .page-title{font-size:28px;}
  .btn-main,.btn-ghost,.btn-light{height:48px;width:100%;}
  .cta-inner .btn-light{width:100%;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category1 */
:root{
  --ink:#14161B;
  --ink-2:#3D424B;
  --muted:#797E87;
  --paper:#F6F5F2;
  --card:#FFFFFF;
  --surface:#FBFAF8;
  --line:#E7E4DD;
  --line-2:#D9D5CC;
  --orange:#E4571F;
  --orange-d:#B23F12;
  --orange-l:#FDEDE5;
  --cyan:#0E9F8C;
  --focus:rgba(228,87,31,.28);
  --r-btn:10px;
  --r-card:16px;
  --r-img:12px;
  --r-big:24px;
  --sh-1:0 1px 2px rgba(20,22,27,.05);
  --sh-2:0 16px 40px -18px rgba(20,22,27,.22);
  --sh-3:0 24px 60px -24px rgba(20,22,27,.28);
  --font:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Consolas,monospace;
  --pad:104px;
  --bs-primary:#E4571F;
  --bs-primary-rgb:228,87,31;
  --bs-link-color:#14161B;
  --bs-link-hover-color:#E4571F;
  --bs-body-bg:#F6F5F2;
  --bs-body-color:#14161B;
  --bs-border-color:#E7E4DD;
  --bs-border-radius:10px;
  --bs-font-sans-serif:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--ink);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--orange)}
button,input,select,textarea{font-family:inherit;font-size:inherit}
h1,h2,h3,h4,h5,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}
:focus-visible{outline:3px solid var(--focus);outline-offset:2px;border-radius:4px}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 32px}
@media (max-width:1199px){.container{max-width:1140px}}
@media (max-width:991px){.container{padding:0 24px}}
@media (max-width:767px){.container{padding:0 20px}}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:1030;background:#fff;transition:box-shadow .25s ease}
.site-header.is-stuck{box-shadow:0 8px 24px -18px rgba(20,22,27,.45)}
.brandbar{border-bottom:1px solid var(--line);background:#fff}
.brandbar-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px}
.brand{display:inline-flex;align-items:center;gap:10px}
.brand-mark{width:26px;height:26px;border-radius:8px;background:conic-gradient(from 40deg,var(--orange) 0 26%,var(--ink) 0 100%);flex:0 0 auto}
.brand-name{font-size:18px;font-weight:700;letter-spacing:.02em;color:var(--ink);white-space:nowrap}
.brandbar-tools{display:flex;align-items:center;gap:14px}
.search-pill{display:flex;align-items:center;gap:8px;height:40px;padding:0 14px;border-radius:999px;background:var(--paper);border:1px solid transparent;color:var(--muted);transition:width .25s ease,border-color .2s ease,background .2s ease;width:240px}
.search-pill:focus-within{border-color:var(--orange);background:#fff;box-shadow:0 0 0 3px var(--focus);width:320px}
.search-pill input{border:0;background:transparent;outline:none;width:100%;font-size:14px;color:var(--ink)}
.search-pill input::placeholder{color:var(--muted)}
.burger{display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line-2);background:#fff;position:relative}
.burger span,.burger span::before,.burger span::after{position:absolute;left:50%;transform:translateX(-50%);width:18px;height:2px;background:var(--ink);border-radius:2px;content:"";transition:.2s}
.burger span{top:19px}
.burger span::before{top:-6px}
.burger span::after{top:6px}

.channelbar{background:var(--surface);border-bottom:1px solid var(--line)}
.channelbar-inner{display:flex;align-items:center;height:52px}
.channel-tabs{display:flex;align-items:center;gap:8px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;padding:2px 0}
.channel-tabs::-webkit-scrollbar{display:none}
.channel-pill{height:36px;display:inline-flex;align-items:center;padding:0 18px;border-radius:999px;font-size:15px;color:var(--ink-2);white-space:nowrap;transition:background .2s ease,color .2s ease}
.channel-pill:hover{background:#EFEDE8;color:var(--ink)}
.channel-pill.active{background:var(--ink);color:#fff}
.channel-pill.active:hover{color:#fff}

/* ---------- buttons ---------- */
.btn-main{position:relative;display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 26px;border-radius:var(--r-btn);background:var(--ink);border:1px solid var(--ink);color:#fff;font-size:15px;font-weight:600;overflow:hidden;cursor:pointer;transition:color .2s ease,border-color .2s ease}
.btn-main span{position:relative;z-index:2}
.btn-main::before{content:"";position:absolute;inset:0;background:var(--orange);transform:translateX(-101%);transition:transform .28s cubic-bezier(.2,.8,.2,1);z-index:1}
.btn-main:hover{color:#fff;border-color:var(--orange)}
.btn-main:hover::before{transform:translateX(0)}
.btn-main.btn-sm{height:40px;padding:0 20px;font-size:14px}
.btn-main.btn-lg{height:56px;padding:0 32px}
.btn-main[disabled]{opacity:.4;cursor:not-allowed}
.btn-ghost{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 26px;border-radius:var(--r-btn);background:transparent;border:1px solid var(--line-2);color:var(--ink);font-size:15px;font-weight:600;transition:border-color .2s ease,background .2s ease}
.btn-ghost:hover{border-color:var(--ink);background:var(--paper);color:var(--ink)}
.btn-ghost.btn-lg{height:56px;padding:0 32px}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--ink);position:relative;padding-bottom:3px}
.link-more::after{content:"";position:absolute;left:0;bottom:0;width:0;height:1px;background:var(--orange);transition:width .2s ease}
.link-more:hover{color:var(--orange)}
.link-more:hover::after{width:100%}

/* ---------- breadcrumb ---------- */
.crumb-wrap{padding:22px 0 0;background:var(--surface)}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted)}
.crumb a{color:var(--ink-2)}
.crumb .sep{color:var(--line-2)}
.crumb .current{color:var(--muted)}

/* ---------- page hero ---------- */
.page-hero{background:var(--surface);border-bottom:1px solid var(--line);padding:40px 0 56px;position:relative;overflow:hidden}
.page-hero::before{content:"";position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.png');background-size:cover;background-position:center;opacity:.06}
.page-hero .container{position:relative}
.page-hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center}
.eyebrow{font-size:12px;letter-spacing:.18em;color:var(--muted);font-family:var(--mono);text-transform:uppercase;margin-bottom:14px}
.eyebrow b{color:var(--orange);font-weight:700}
.page-hero h1{font-size:40px;line-height:1.16;font-weight:900;letter-spacing:-.02em;margin-bottom:16px}
.page-hero .lede{font-size:16px;line-height:1.85;color:var(--ink-2);max-width:620px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-note{display:flex;flex-wrap:wrap;gap:20px;margin-top:22px;font-size:13px;color:var(--muted)}
.hero-note span{display:inline-flex;align-items:center;gap:7px}
.dot{width:6px;height:6px;border-radius:50%;background:var(--orange);flex:0 0 auto}
.dot.cyan{background:var(--cyan)}

.summary-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:28px;box-shadow:var(--sh-1)}
.summary-card h2{font-size:15px;font-weight:700;letter-spacing:.02em;color:var(--ink-2);margin-bottom:18px}
.summary-list li{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;padding:14px 0;border-bottom:1px solid var(--line)}
.summary-list li:last-child{border-bottom:0;padding-bottom:0}
.summary-list li:first-child{padding-top:0}
.summary-k{font-size:14px;color:var(--ink-2)}
.summary-v{font-family:var(--mono);font-size:26px;font-weight:700;line-height:1;font-variant-numeric:tabular-nums}
.summary-v small{font-size:13px;font-weight:500;color:var(--muted);margin-left:4px}

/* ---------- sections ---------- */
.section{padding:var(--pad) 0}
.section.alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:760px;margin-bottom:40px}
.section-head h2{font-size:36px;line-height:1.22;font-weight:800;letter-spacing:-.01em;margin-bottom:14px}
.section-head p{font-size:16px;line-height:1.85;color:var(--ink-2)}
.section-head.row{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;max-width:none}

/* ---------- capability grid ---------- */
.cap-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.cap-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:28px;transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease}
.cap-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--line-2)}
.cap-icon{width:44px;height:44px;border-radius:12px;background:var(--orange-l);color:var(--orange-d);display:flex;align-items:center;justify-content:center;margin-bottom:18px}
.cap-card h3{font-size:18px;font-weight:700;margin-bottom:10px}
.cap-card p{font-size:15px;line-height:1.8;color:var(--ink-2)}
.cap-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.chip{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;font-size:13px;background:var(--orange-l);color:var(--orange-d)}
.chip.gray{background:#EFEDE8;color:var(--ink-2)}

/* ---------- process ---------- */
.process{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line)}
.step{position:relative;padding:32px 28px 34px;border-right:1px solid var(--line)}
.step:last-child{border-right:0}
.step-num{font-family:var(--mono);font-size:13px;font-weight:700;color:var(--orange);letter-spacing:.06em;margin-bottom:14px}
.step h3{font-size:18px;font-weight:700;margin-bottom:10px}
.step p{font-size:15px;line-height:1.8;color:var(--ink-2)}
.step::after{content:"";position:absolute;left:28px;bottom:16px;width:26px;height:2px;background:var(--line-2)}
.step:last-child::after{background:var(--orange)}

/* ---------- split feature ---------- */
.split{display:grid;grid-template-columns:6fr 6fr;gap:48px;align-items:center}
.split-media{border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);box-shadow:var(--sh-1)}
.split-media img{width:100%;aspect-ratio:4/3;object-fit:cover;filter:saturate(.92) contrast(1.02);transition:transform .4s ease}
.split-media:hover img{transform:scale(1.03)}
.split-list{margin-top:22px}
.split-list li{display:flex;gap:14px;padding:14px 0;border-bottom:1px solid var(--line)}
.split-list li:last-child{border-bottom:0}
.split-list .idx{font-family:var(--mono);font-size:13px;color:var(--muted);flex:0 0 34px;padding-top:3px}
.split-list strong{display:block;font-size:16px;font-weight:700;margin-bottom:4px}
.split-list p{font-size:15px;line-height:1.8;color:var(--ink-2)}

/* ---------- table ---------- */
.table-shell{border:1px solid var(--line);border-radius:var(--r-card);background:#fff;overflow:hidden}
.table-scroll{overflow-x:auto}
table.spec{width:100%;border-collapse:collapse;min-width:720px}
table.spec th,table.spec td{padding:18px 24px;text-align:left;font-size:15px;border-bottom:1px solid var(--line)}
table.spec thead th{background:var(--surface);font-size:13px;font-weight:700;letter-spacing:.04em;color:var(--ink-2);border-bottom:1px solid var(--line-2)}
table.spec tbody th{font-weight:600;color:var(--ink);background:#fff;width:26%}
table.spec tbody tr:last-child th,table.spec tbody tr:last-child td{border-bottom:0}
table.spec tbody tr:hover td,table.spec tbody tr:hover th{background:#FDFCFA}
table.spec td.num{font-family:var(--mono);font-variant-numeric:tabular-nums;color:var(--ink)}
.tag-pro{display:inline-flex;align-items:center;height:22px;padding:0 9px;border-radius:999px;background:var(--orange-l);color:var(--orange-d);font-size:12px;margin-left:8px;font-weight:700}
.table-foot{padding:16px 24px;border-top:1px solid var(--line);background:var(--surface);font-size:13px;color:var(--muted)}

/* ---------- faq ---------- */
.faq-grid{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start}
.faq-aside{position:sticky;top:130px}
.faq-aside h2{font-size:34px;line-height:1.2;font-weight:800;margin-bottom:14px}
.faq-aside p{font-size:15px;line-height:1.85;color:var(--ink-2);margin-bottom:20px}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{width:100%;display:flex;align-items:flex-start;gap:20px;background:transparent;border:0;text-align:left;padding:22px 0;cursor:pointer;color:var(--ink)}
.faq-q .qn{font-family:var(--mono);font-size:13px;color:var(--muted);flex:0 0 32px;padding-top:4px}
.faq-q .qt{flex:1;font-size:17px;font-weight:600;line-height:1.5}
.faq-q .qi{flex:0 0 24px;position:relative;height:24px;margin-top:2px}
.faq-q .qi::before,.faq-q .qi::after{content:"";position:absolute;left:50%;top:50%;background:var(--ink);border-radius:2px;transition:transform .25s ease,background .2s ease}
.faq-q .qi::before{width:14px;height:2px;transform:translate(-50%,-50%)}
.faq-q .qi::after{width:2px;height:14px;transform:translate(-50%,-50%)}
.faq-item.open .qi::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0}
.faq-item.open .qi::before{background:var(--orange)}
.faq-a{max-height:0;overflow:hidden;opacity:0;transition:max-height .3s ease,opacity .25s ease}
.faq-item.open .faq-a{opacity:1}
.faq-a p{padding:0 0 24px 52px;font-size:15px;line-height:1.9;color:var(--muted)}

/* ---------- cta band ---------- */
.cta-band{background:var(--ink);border-radius:var(--r-big);padding:48px 56px;display:flex;align-items:center;justify-content:space-between;gap:32px;color:#fff;box-shadow:var(--sh-3)}
.cta-band h2{font-size:30px;line-height:1.3;font-weight:800;margin-bottom:10px}
.cta-band p{font-size:15px;line-height:1.8;color:rgba(255,255,255,.72);max-width:640px}
.cta-band .btn-main{background:#fff;color:var(--ink);border-color:#fff;flex:0 0 auto}
.cta-band .btn-main::before{background:var(--orange)}
.cta-band .btn-main:hover{color:#fff;border-color:var(--orange)}

/* ---------- footer ---------- */
.site-footer{background:var(--paper);border-top:1px solid var(--line);padding:72px 0 32px;margin-top:var(--pad)}
.footer-grid{display:grid;grid-template-columns:4fr 2.5fr 2.5fr 3fr;gap:40px}
.footer-brand p{font-size:14px;line-height:1.85;color:var(--ink-2);margin-top:16px;max-width:340px}
.footer-col h5{font-size:14px;font-weight:700;margin-bottom:16px;color:var(--ink)}
.footer-col ul li{margin-bottom:10px;font-size:14px;color:var(--ink-2)}
.footer-col a{color:var(--ink-2);position:relative}
.footer-col a:hover{color:var(--orange)}
.footer-bottom{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;margin-top:48px;padding-top:22px;border-top:1px solid var(--line);font-size:13px;color:var(--muted)}

/* ---------- misc ---------- */
.to-top{position:fixed;right:24px;bottom:24px;width:44px;height:44px;border-radius:50%;background:var(--ink);color:#fff;border:0;display:flex;align-items:center;justify-content:center;opacity:0;pointer-events:none;transition:opacity .25s ease,background .2s ease,transform .2s ease;z-index:1040}
.to-top.show{opacity:1;pointer-events:auto}
.to-top:hover{background:var(--orange);transform:translateY(-2px)}
.drawer-mask{position:fixed;inset:0;background:rgba(20,22,27,.5);opacity:0;pointer-events:none;transition:opacity .25s ease;z-index:1050}
.drawer-mask.show{opacity:1;pointer-events:auto}
.drawer{position:fixed;top:0;right:0;bottom:0;width:300px;max-width:86vw;background:#fff;z-index:1060;transform:translateX(102%);transition:transform .28s cubic-bezier(.2,.8,.2,1);display:flex;flex-direction:column;padding:24px}
.drawer.show{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}
.drawer-close{width:38px;height:38px;border-radius:10px;border:1px solid var(--line-2);background:#fff;color:var(--ink);font-size:18px;line-height:1}
.drawer-nav a{display:block;padding:13px 0 13px 14px;border-bottom:1px solid var(--line);font-size:15px;color:var(--ink-2);border-left:3px solid transparent}
.drawer-nav a.active{border-left-color:var(--orange);color:var(--ink);font-weight:700}
.drawer-foot{margin-top:auto;display:grid;gap:10px}

.reveal{opacity:0;transform:translateY(12px);transition:opacity .24s ease,transform .24s ease}
.reveal.in{opacity:1;transform:none}

@media (max-width:1199px){
  :root{--pad:80px}
  .section-head h2{font-size:32px}
  .page-hero h1{font-size:34px}
}
@media (max-width:991px){
  .burger{display:block}
  .search-pill{display:none}
  .page-hero-grid{grid-template-columns:1fr;gap:32px}
  .cap-grid{grid-template-columns:repeat(2,1fr)}
  .process{grid-template-columns:repeat(2,1fr)}
  .step:nth-child(2){border-right:0}
  .step{border-bottom:1px solid var(--line)}
  .split{grid-template-columns:1fr;gap:32px}
  .faq-grid{grid-template-columns:1fr;gap:28px}
  .faq-aside{position:static}
  .cta-band{flex-direction:column;align-items:flex-start;padding:36px 32px}
  .footer-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:767px){
  :root{--pad:56px}
  .brand-name{font-size:16px}
  .page-hero{padding:28px 0 44px}
  .page-hero h1{font-size:26px}
  .section-head h2,.faq-aside h2{font-size:24px}
  .cta-band h2{font-size:22px}
  .faq-a p{padding-left:0}
  .faq-q .qn{display:none}
}
@media (max-width:575px){
  .cap-grid{grid-template-columns:1fr}
  .process{grid-template-columns:1fr}
  .step{border-right:0}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .hero-actions .btn-main,.hero-actions .btn-ghost{width:100%}
  .summary-card{padding:22px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category2 */
:root{
  --bs-primary:#E4571F;
  --bs-primary-rgb:228,87,31;
  --bs-link-color:#14161B;
  --bs-link-hover-color:#E4571F;
  --bs-body-bg:#F6F5F2;
  --bs-body-color:#14161B;
  --bs-border-color:#E7E4DD;
  --bs-border-radius:10px;
  --bs-font-sans-serif:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;

  --ink:#14161B;
  --ink-2:#3D424B;
  --muted:#797E87;
  --paper:#F6F5F2;
  --card:#FFFFFF;
  --alt:#FBFAF8;
  --line:#E7E4DD;
  --line-strong:#D9D5CC;
  --orange:#E4571F;
  --orange-deep:#B23F12;
  --orange-soft:#FDEDE5;
  --teal:#0E9F8C;
  --ring:rgba(228,87,31,.28);
  --r-btn:10px;
  --r-card:16px;
  --r-img:12px;
  --r-pill:999px;
  --sh1:0 1px 2px rgba(20,22,27,.05);
  --sh2:0 16px 40px -18px rgba(20,22,27,.22);
  --sh3:0 24px 60px -24px rgba(20,22,27,.28);
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;transition:color .2s ease,border-color .2s ease;}
a:hover{color:var(--orange);}
button,input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4,h5{margin:0;font-weight:800;letter-spacing:-.01em;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--orange);outline-offset:2px;}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 32px;}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums;letter-spacing:-.01em;}

/* ---------- 头部 ---------- */
.site-header{position:sticky;top:0;z-index:1030;background:#fff;transition:box-shadow .25s ease;}
.site-header.scrolled{box-shadow:0 6px 24px -14px rgba(20,22,27,.28);}
.brandbar{border-bottom:1px solid var(--line);background:#fff;}
.brandbar-inner{height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px;}
.brand{display:inline-flex;align-items:center;gap:10px;}
.brand-mark{
  width:26px;height:26px;border-radius:8px;flex:0 0 26px;
  background:
    linear-gradient(135deg,var(--orange) 0 48%,transparent 48% 100%),
    linear-gradient(315deg,var(--ink) 0 52%,transparent 52% 100%);
  box-shadow:inset 0 0 0 1px rgba(20,22,27,.14);
}
.brand-name{font-size:19px;font-weight:700;letter-spacing:.02em;color:var(--ink);}
.brandbar-tools{display:flex;align-items:center;gap:12px;}
.search-pill{
  display:flex;align-items:center;gap:8px;height:40px;padding:0 14px;
  background:var(--paper);border:1px solid transparent;border-radius:var(--r-pill);
  width:320px;color:var(--muted);transition:border-color .2s ease,background .2s ease;
}
.search-pill:focus-within{border-color:var(--orange);background:#fff;box-shadow:0 0 0 3px var(--ring);}
.search-pill input{flex:1;min-width:0;border:0;background:transparent;font-size:14px;outline:none;color:var(--ink);}
.search-pill input::placeholder{color:var(--muted);}
.btn-main{
  position:relative;display:inline-flex;align-items:center;justify-content:center;
  height:48px;padding:13px 26px;border-radius:var(--r-btn);border:1px solid var(--ink);
  background:var(--ink);color:#fff;font-weight:600;font-size:15px;overflow:hidden;z-index:1;
  transition:color .25s ease,border-color .25s ease,box-shadow .25s ease,transform .25s ease;
}
.btn-main::before{
  content:"";position:absolute;inset:0;width:0;background:var(--orange);z-index:-1;
  transition:width .28s cubic-bezier(.2,.8,.2,1);
}
.btn-main:hover{color:#fff;border-color:var(--orange);box-shadow:var(--sh2);}
.btn-main:hover::before{width:100%;}
.btn-main.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;height:48px;padding:12px 24px;
  border:1px solid var(--line-strong);border-radius:var(--r-btn);background:transparent;
  font-weight:600;font-size:15px;color:var(--ink);transition:all .2s ease;
}
.btn-ghost:hover{border-color:var(--ink);background:var(--paper);color:var(--ink);box-shadow:var(--sh1);}
.burger{
  display:none;width:42px;height:42px;border:1px solid var(--line-strong);border-radius:10px;
  background:#fff;position:relative;
}
.burger span,
.burger span::before,
.burger span::after{
  content:"";position:absolute;left:50%;width:18px;height:2px;background:var(--ink);
  transform:translateX(-50%);transition:transform .2s ease,opacity .2s ease;
}
.burger span{top:50%;margin-top:-1px;}
.burger span::before{top:-6px;}
.burger span::after{top:6px;}
.burger.is-open span{background:transparent;}
.burger.is-open span::before{transform:translateX(-50%) rotate(45deg);top:0;}
.burger.is-open span::after{transform:translateX(-50%) rotate(-45deg);top:0;}

.channelbar{background:var(--alt);border-bottom:1px solid var(--line);}
.channelbar-inner{height:52px;display:flex;align-items:center;}
.channel-tabs{
  display:flex;align-items:center;gap:8px;overflow-x:auto;scrollbar-width:none;width:100%;
  padding:8px 0;
}
.channel-tabs::-webkit-scrollbar{display:none;}
.channel-pill{
  flex:0 0 auto;display:inline-flex;align-items:center;height:36px;padding:0 18px;
  border-radius:var(--r-pill);font-size:14px;font-weight:500;color:var(--ink-2);
  transition:background .2s ease,color .2s ease;
}
.channel-pill:hover{background:#EFEDE8;color:var(--ink);}
.channel-pill.active{background:var(--ink);color:#fff;font-weight:600;}
.channel-pill.active:hover{color:#fff;}

/* 移动抽屉 */
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(86vw,340px);background:#fff;z-index:1090;
  transform:translateX(102%);transition:transform .28s cubic-bezier(.2,.8,.2,1);
  box-shadow:var(--sh3);padding:22px 22px 28px;display:flex;flex-direction:column;gap:18px;overflow-y:auto;
}
.drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;}
.drawer-close{width:38px;height:38px;border:1px solid var(--line-strong);border-radius:10px;background:#fff;font-size:18px;line-height:1;}
.drawer-list a{display:block;padding:13px 14px;border-radius:10px;font-weight:600;color:var(--ink-2);}
.drawer-list a.active{color:var(--ink);border-left:3px solid var(--orange);padding-left:11px;background:var(--alt);}
.drawer-list a:hover{background:var(--alt);}
.drawer-foot{margin-top:auto;display:flex;flex-direction:column;gap:10px;}
.drawer-mask{position:fixed;inset:0;background:rgba(20,22,27,.42);opacity:0;pointer-events:none;transition:opacity .25s ease;z-index:1080;}
.drawer-mask.show{opacity:1;pointer-events:auto;}

/* ---------- 面包屑 ---------- */
.crumb-bar{border-bottom:1px solid var(--line);background:#fff;}
.crumb{display:flex;align-items:center;gap:8px;padding:14px 0;font-size:13px;color:var(--muted);flex-wrap:wrap;}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--orange);}
.crumb .sep{color:var(--line-strong);}
.crumb .now{color:var(--ink);font-weight:600;}

/* ---------- 小 Hero ---------- */
.page-hero{
  position:relative;border-bottom:1px solid var(--line);
  background:
    linear-gradient(180deg,rgba(246,245,242,.95),rgba(246,245,242,.99)),
    url('/assets/images/backpic/back-2.png') center/cover no-repeat;
}
.page-hero-inner{padding:52px 0 46px;display:grid;grid-template-columns:1.55fr 1fr;gap:44px;align-items:end;}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;font-size:12.5px;letter-spacing:.18em;
  text-transform:uppercase;color:var(--muted);font-family:var(--mono);margin-bottom:16px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--orange);display:block;}
.page-hero h1{
  font-size:clamp(30px,3.5vw,44px);line-height:1.15;font-weight:900;letter-spacing:-.02em;
  max-width:15ch;margin-bottom:16px;
}
.page-hero h1 em{font-style:normal;color:var(--orange);}
.hero-sub{font-size:16.5px;line-height:1.85;color:var(--ink-2);max-width:46ch;}
.hero-facts{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:22px 24px;box-shadow:var(--sh1);
}
.hero-facts h2{font-size:14px;font-weight:700;color:var(--ink-2);letter-spacing:.02em;margin-bottom:14px;}
.fact-row{display:flex;align-items:baseline;justify-content:space-between;gap:14px;padding:11px 0;border-bottom:1px dashed var(--line);}
.fact-row:last-child{border-bottom:0;padding-bottom:0;}
.fact-row:first-of-type{padding-top:0;}
.fact-label{font-size:14px;color:var(--ink-2);}
.fact-value{font-family:var(--mono);font-size:20px;font-weight:700;}
.fact-value .u{font-size:12px;color:var(--muted);margin-left:3px;font-weight:500;}

/* ---------- 板块通用 ---------- */
.section{padding:88px 0;}
.section.tight{padding:64px 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;margin-bottom:38px;}
.section-head h2{font-size:clamp(24px,2.6vw,34px);line-height:1.22;margin-top:12px;}
.section-head p{color:var(--muted);font-size:15px;margin-top:10px;max-width:56ch;line-height:1.85;}
.link-more{font-size:14px;font-weight:600;color:var(--ink);border-bottom:1px solid transparent;padding-bottom:2px;transition:all .2s ease;white-space:nowrap;}
.link-more:hover{color:var(--orange);border-bottom-color:var(--orange);}
.link-more::after{content:"→";margin-left:6px;transition:transform .2s ease;display:inline-block;}
.link-more:hover::after{transform:translateX(3px);}

/* ---------- 指标横条 ---------- */
.kpi-band{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--alt);}
.kpi-grid{display:grid;grid-template-columns:repeat(3,1fr);}
.kpi-item{padding:38px 34px;border-left:1px solid var(--line);}
.kpi-item:first-child{border-left:0;padding-left:0;}
.kpi-item:last-child{padding-right:0;}
.kpi-label{font-family:var(--mono);font-size:12.5px;letter-spacing:.14em;color:var(--muted);text-transform:uppercase;}
.kpi-value{display:flex;align-items:baseline;gap:6px;margin:12px 0 6px;}
.kpi-num{font-family:var(--mono);font-size:50px;font-weight:700;line-height:1;font-variant-numeric:tabular-nums;}
.kpi-unit{font-size:17px;color:var(--ink-2);font-weight:600;}
.kpi-note{font-size:13px;color:var(--muted);}
.kpi-delta{display:inline-flex;align-items:center;gap:5px;font-family:var(--mono);font-size:12.5px;font-weight:600;padding:2px 9px;border-radius:var(--r-pill);background:var(--orange-soft);color:var(--orange-deep);margin-left:8px;}
.kpi-delta.up{background:rgba(14,159,140,.1);color:var(--teal);}

/* ---------- 对比条 ---------- */
.bars{margin-top:34px;display:grid;gap:20px;}
.bar-row{display:grid;grid-template-columns:150px 1fr 90px;align-items:center;gap:20px;}
.bar-name{font-size:14px;color:var(--ink-2);}
.bar-track{position:relative;height:8px;border-radius:var(--r-pill);background:#E9E6DF;overflow:hidden;}
.bar-fill{position:absolute;inset:0 auto 0 0;width:0;border-radius:var(--r-pill);background:var(--orange);transition:width .7s cubic-bezier(.2,.8,.2,1);}
.bar-fill.teal{background:var(--teal);}
.bar-fill.ink{background:var(--ink);}
.bar-val{font-family:var(--mono);font-size:15px;font-weight:700;text-align:right;}

/* ---------- 重点观察卡 ---------- */
.obs-feature{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin-bottom:12px;}
.feat-card{
  display:grid;grid-template-columns:180px 1fr;gap:0;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.feat-card:hover{transform:translateY(-2px);box-shadow:var(--sh2);border-color:var(--line-strong);}
.feat-thumb{position:relative;overflow:hidden;background:var(--alt);}
.feat-thumb img{width:100%;height:100%;object-fit:cover;filter:saturate(.92) contrast(1.02);transition:transform .35s ease;}
.feat-card:hover .feat-thumb img{transform:scale(1.03);}
.feat-body{padding:24px 24px 22px;display:flex;flex-direction:column;gap:10px;}
.chip{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:var(--r-pill);
  font-size:13px;font-weight:600;background:var(--orange-soft);color:var(--orange-deep);width:fit-content;
}
.chip.gray{background:#F1EFEA;color:var(--ink-2);font-weight:500;}
.feat-body h3{font-size:18px;line-height:1.45;font-weight:700;}
.feat-body p{font-size:14.5px;line-height:1.8;color:var(--ink-2);}
.feat-meta{display:flex;align-items:center;gap:12px;font-size:13px;color:var(--muted);margin-top:auto;padding-top:8px;}
.feat-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--line-strong);}

/* ---------- 观察列表 ---------- */
.obs-list{border-top:1px solid var(--line);}
.obs-row{
  display:grid;grid-template-columns:190px 1fr 118px;gap:28px;align-items:start;
  padding:24px 12px;border-bottom:1px solid var(--line);transition:background .2s ease,transform .2s ease;
}
.obs-row:hover{background:#fff;transform:translateX(2px);}
.obs-row:hover .obs-title{color:var(--orange);}
.obs-side{display:flex;flex-direction:column;gap:8px;}
.obs-date{font-family:var(--mono);font-size:13px;color:var(--muted);}
.obs-title{font-size:17px;font-weight:600;line-height:1.55;transition:color .2s ease;margin-bottom:8px;}
.obs-desc{font-size:14.5px;line-height:1.8;color:var(--ink-2);}
.obs-link{align-self:center;}

/* ---------- 分页 ---------- */
.pager{display:flex;align-items:center;gap:10px;margin-top:34px;flex-wrap:wrap;}
.pager a,.pager span{
  display:inline-flex;align-items:center;justify-content:center;min-width:42px;height:42px;padding:0 12px;
  border:1px solid var(--line-strong);border-radius:10px;font-family:var(--mono);font-size:14px;color:var(--ink-2);
  background:#fff;transition:all .2s ease;
}
.pager a:hover{border-color:var(--ink);color:var(--ink);box-shadow:var(--sh1);}
.pager .current{background:var(--ink);color:#fff;border-color:var(--ink);font-weight:700;}
.pager .gap{border:0;background:transparent;min-width:auto;padding:0 2px;color:var(--muted);}
.pager-info{margin-left:auto;font-size:13px;color:var(--muted);}

/* ---------- 口径说明 ---------- */
.notes-wrap{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start;}
.notes-side{position:sticky;top:150px;}
.notes-side h2{font-size:clamp(22px,2.4vw,30px);line-height:1.25;margin:12px 0 14px;}
.notes-side p{font-size:15px;line-height:1.85;color:var(--ink-2);margin-bottom:20px;}
.acc-item{border-bottom:1px solid var(--line);}
.acc-item:first-child{border-top:1px solid var(--line);}
.acc-btn{
  width:100%;display:flex;align-items:flex-start;gap:16px;padding:22px 4px;background:none;border:0;
  text-align:left;cursor:pointer;color:var(--ink);
}
.acc-idx{font-family:var(--mono);font-size:13px;color:var(--muted);padding-top:3px;min-width:26px;}
.acc-q{flex:1;font-size:17px;font-weight:600;line-height:1.6;}
.acc-icon{
  flex:0 0 26px;width:26px;height:26px;border-radius:50%;border:1px solid var(--line-strong);position:relative;
  transition:transform .25s ease,background .25s ease,border-color .25s ease;margin-top:2px;
}
.acc-icon::before,.acc-icon::after{
  content:"";position:absolute;top:50%;left:50%;background:var(--ink);transition:background .25s ease;
}
.acc-icon::before{width:11px;height:1.5px;transform:translate(-50%,-50%);}
.acc-icon::after{width:1.5px;height:11px;transform:translate(-50%,-50%);}
.acc-btn[aria-expanded="true"] .acc-icon{transform:rotate(45deg);background:var(--orange);border-color:var(--orange);}
.acc-btn[aria-expanded="true"] .acc-icon::before,
.acc-btn[aria-expanded="true"] .acc-icon::after{background:#fff;}
.acc-body{padding:0 4px 24px 46px;font-size:15px;line-height:1.9;color:var(--muted);}
.acc-body .inner{max-width:64ch;}
.acc-panel{max-height:0;overflow:hidden;transition:max-height .3s ease,opacity .25s ease;opacity:0;}
.acc-panel.open{opacity:1;}

/* ---------- 订阅卡 ---------- */
.subscribe{
  margin-top:44px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 28px;display:grid;grid-template-columns:1fr auto;gap:26px;align-items:center;box-shadow:var(--sh1);
}
.subscribe h3{font-size:18px;margin-bottom:6px;}
.subscribe p{font-size:14px;color:var(--muted);line-height:1.8;}
.sub-form{display:flex;gap:10px;}
.sub-form input{
  height:48px;min-width:250px;padding:0 16px;border:1px solid var(--line-strong);border-radius:var(--r-btn);
  background:var(--paper);font-size:14.5px;outline:none;transition:border-color .2s ease,box-shadow .2s ease;
}
.sub-form input:focus{border-color:var(--orange);box-shadow:0 0 0 3px var(--ring);background:#fff;}
.sub-form input::placeholder{color:var(--muted);}

/* ---------- CTA 条 ---------- */
.cta-band{padding:0 0 88px;}
.cta-inner{
  background:var(--ink);border-radius:24px;padding:44px 48px;color:#fff;
  display:flex;align-items:center;justify-content:space-between;gap:32px;box-shadow:var(--sh3);
}
.cta-inner h2{font-size:clamp(22px,2.4vw,30px);line-height:1.3;margin-bottom:10px;}
.cta-inner p{color:rgba(255,255,255,.66);font-size:15px;line-height:1.85;max-width:52ch;}
.btn-light{
  display:inline-flex;align-items:center;justify-content:center;height:50px;padding:0 30px;border-radius:var(--r-btn);
  background:#fff;color:var(--ink);font-weight:700;font-size:15px;white-space:nowrap;
  transition:background .22s ease,color .22s ease,transform .22s ease;
}
.btn-light:hover{background:var(--orange);color:#fff;transform:translateY(-2px);}

/* ---------- 页脚 ---------- */
.site-footer{background:#fff;border-top:1px solid var(--line);padding:64px 0 26px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;}
.footer-brand p{font-size:14px;line-height:1.9;color:var(--muted);margin-top:16px;max-width:34ch;}
.footer-col h5{font-size:14px;font-weight:700;letter-spacing:.04em;margin-bottom:16px;}
.footer-col li{margin-bottom:11px;}
.footer-col a,.footer-col span{font-size:14px;color:var(--ink-2);}
.footer-col a{position:relative;display:inline-block;}
.footer-col a::after{
  content:"";position:absolute;left:0;bottom:-2px;width:0;height:1px;background:var(--orange);transition:width .2s ease;
}
.footer-col a:hover{color:var(--orange);}
.footer-col a:hover::after{width:100%;}
.footer-bottom{
  margin-top:46px;padding-top:22px;border-top:1px solid var(--line);display:flex;align-items:center;
  justify-content:space-between;gap:16px;font-size:13px;color:var(--muted);flex-wrap:wrap;
}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;right:26px;bottom:26px;width:44px;height:44px;border-radius:50%;border:0;
  background:var(--ink);color:#fff;display:flex;align-items:center;justify-content:center;cursor:pointer;
  opacity:0;pointer-events:none;transform:translateY(8px);transition:all .25s ease;z-index:1040;
}
.to-top.show{opacity:1;pointer-events:auto;transform:translateY(0);}
.to-top:hover{background:var(--orange);}

/* ---------- 动效 ---------- */
.fade-up{opacity:0;transform:translateY(12px);transition:opacity .24s ease,transform .24s ease;}
.fade-up.in{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .container{max-width:1140px;}
  .obs-row{grid-template-columns:150px 1fr 110px;gap:22px;}
}
@media (max-width:991.98px){
  .container{max-width:960px;padding:0 24px;}
  .search-pill{display:none;}
  .page-hero-inner{grid-template-columns:1fr;gap:28px;align-items:start;padding:44px 0 40px;}
  .page-hero h1{max-width:none;}
  .kpi-grid{grid-template-columns:1fr;}
  .kpi-item{border-left:0;border-top:1px solid var(--line);padding:26px 0;}
  .kpi-item:first-child{border-top:0;padding-top:0;}
  .obs-feature{grid-template-columns:1fr;}
  .notes-wrap{grid-template-columns:1fr;gap:28px;}
  .notes-side{position:static;}
  .subscribe{grid-template-columns:1fr;}
  .cta-inner{flex-direction:column;align-items:flex-start;padding:36px 32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .section{padding:64px 0;}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px;}
}
@media (max-width:767.98px){
  .brandbar-inner{height:64px;}
  .brand-name{font-size:17px;}
  .burger{display:block;}
  .channelbar-inner{height:auto;}
  .channel-tabs{padding:8px 0;}
  .channelbar{position:sticky;top:64px;z-index:1029;}
  .page-hero h1{font-size:30px;}
  .hero-sub{font-size:15.5px;}
  .obs-row{grid-template-columns:1fr;gap:12px;padding:20px 4px;}
  .obs-side{flex-direction:row;align-items:center;gap:12px;}
  .obs-link{align-self:flex-start;}
  .bar-row{grid-template-columns:110px 1fr 66px;gap:12px;}
  .feat-card{grid-template-columns:1fr;}
  .feat-thumb{height:180px;}
  .kpi-num{font-size:40px;}
  .section{padding:56px 0;}
  .cta-band{padding-bottom:56px;}
  .sub-form{flex-direction:column;}
  .sub-form input{min-width:0;width:100%;}
}
@media (max-width:575.98px){
  .container{padding:0 20px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .btn-main,.btn-ghost,.btn-light{width:100%;}
  .cta-inner{border-radius:20px;padding:28px 22px;}
  .pager-info{margin-left:0;width:100%;}
  .acc-body{padding-left:4px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none !important;transition:none !important;}
  .fade-up{opacity:1;transform:none;}
  .bar-fill{transition:none;}
}

/* roulang page: category3 */
:root{
  --ink:#14161B;
  --ink-2:#3D424B;
  --muted:#797E87;
  --paper:#F6F5F2;
  --card:#FFFFFF;
  --sub:#FBFAF8;
  --line:#E7E4DD;
  --line-strong:#D9D5CC;
  --accent:#E4571F;
  --accent-dark:#B23F12;
  --accent-soft:#FDEDE5;
  --teal:#0E9F8C;
  --focus:rgba(228,87,31,.28);
  --r-btn:10px;
  --r-card:16px;
  --r-img:12px;
  --r-big:24px;
  --sh-1:0 1px 2px rgba(20,22,27,.05);
  --sh-2:0 16px 40px -18px rgba(20,22,27,.22);
  --sh-3:0 24px 60px -24px rgba(20,22,27,.28);
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  --bs-primary:#E4571F;
  --bs-primary-rgb:228,87,31;
  --bs-link-color:#14161B;
  --bs-link-hover-color:#E4571F;
  --bs-body-bg:#F6F5F2;
  --bs-body-color:#14161B;
  --bs-border-color:#E7E4DD;
  --bs-border-radius:16px;
  --bs-font-sans-serif:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--ink);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--accent);}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
h1,h2,h3,h4,h5,p,ul,ol{margin:0;}
ul,ol{padding:0;list-style:none;}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums;}
:focus-visible{outline:3px solid var(--focus);outline-offset:2px;border-radius:6px;}

.container{max-width:1240px;width:100%;margin:0 auto;padding-left:32px;padding-right:32px;}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:1040;background:#fff;}
.site-header.is-scrolled{box-shadow:0 10px 30px -18px rgba(20,22,27,.28);}
.brandbar{height:72px;border-bottom:1px solid var(--line);background:#fff;}
.site-header.is-scrolled .brandbar{border-bottom-color:transparent;}
.brandbar-inner{height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px;}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:700;letter-spacing:.02em;font-size:19px;color:var(--ink);}
.brand-mark{
  width:26px;height:26px;flex:none;border-radius:7px;
  background:
    linear-gradient(135deg,var(--ink) 0 48%,transparent 48% 100%),
    var(--accent);
  position:relative;overflow:hidden;
}
.brand-mark::after{
  content:"";position:absolute;right:3px;bottom:3px;width:10px;height:10px;border-radius:3px;background:var(--paper);
}
.brand-name{white-space:nowrap;}
.brandbar-tools{display:flex;align-items:center;gap:12px;}
.search-pill{
  display:flex;align-items:center;gap:8px;height:42px;padding:0 16px;border-radius:999px;
  background:var(--paper);border:1px solid transparent;color:var(--muted);min-width:280px;
  transition:border-color .2s ease,background .2s ease,box-shadow .2s ease;
}
.search-pill:focus-within{border-color:var(--accent);background:#fff;box-shadow:0 0 0 3px var(--focus);}
.search-pill input{border:0;background:transparent;outline:none;width:100%;font-size:14px;color:var(--ink);}
.search-pill input::placeholder{color:var(--muted);}
.burger{
  display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);
  background:#fff;position:relative;cursor:pointer;
}
.burger span,.burger span::before,.burger span::after{
  position:absolute;left:50%;top:50%;width:18px;height:2px;background:var(--ink);border-radius:2px;content:"";
  transform:translate(-50%,-50%);transition:transform .2s ease,opacity .2s ease;
}
.burger span::before{transform:translate(-50%,-6px);}
.burger span::after{transform:translate(-50%,6px);}

.channelbar{background:var(--sub);border-bottom:1px solid var(--line);height:52px;}
.channelbar-inner{height:52px;display:flex;align-items:center;position:relative;}
.channel-tabs{
  display:flex;align-items:center;gap:8px;overflow-x:auto;scrollbar-width:none;width:100%;padding:8px 0;
}
.channel-tabs::-webkit-scrollbar{display:none;}
.channel-pill{
  flex:none;height:36px;display:inline-flex;align-items:center;padding:0 18px;border-radius:999px;
  font-size:14px;font-weight:500;color:var(--ink-2);background:transparent;
  transition:background .2s ease,color .2s ease;
}
.channel-pill:hover{background:#EFEDE8;color:var(--ink);}
.channel-pill.active{background:var(--ink);color:#fff;}
.channel-pill.active:hover{background:var(--ink);color:#fff;}

/* drawer */
.drawer{
  position:fixed;top:0;right:0;height:100%;width:320px;max-width:86vw;background:#fff;z-index:1200;
  transform:translateX(105%);transition:transform .28s cubic-bezier(.2,.8,.2,1);
  display:flex;flex-direction:column;padding:22px;box-shadow:var(--sh-3);overflow-y:auto;
}
.drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;}
.drawer-close{width:38px;height:38px;border-radius:10px;border:1px solid var(--line);background:#fff;cursor:pointer;font-size:18px;line-height:1;}
.drawer-nav{display:flex;flex-direction:column;gap:4px;margin-bottom:22px;}
.drawer-nav a{
  position:relative;padding:12px 14px;border-radius:10px;font-size:15px;font-weight:500;color:var(--ink-2);
}
.drawer-nav a:hover{background:var(--sub);color:var(--ink);}
.drawer-nav a.active{color:var(--ink);background:var(--sub);font-weight:700;}
.drawer-nav a.active::before{content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;border-radius:3px;background:var(--accent);}
.drawer-foot{margin-top:auto;display:flex;flex-direction:column;gap:12px;}
.drawer-foot .search-pill{min-width:0;width:100%;}
.backdrop{position:fixed;inset:0;background:rgba(20,22,27,.45);opacity:0;pointer-events:none;transition:opacity .25s ease;z-index:1100;}
.backdrop.show{opacity:1;pointer-events:auto;}

/* ---------- buttons ---------- */
.btn-main,.btn-ghost{
  position:relative;display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-btn);font-size:15px;font-weight:600;
  cursor:pointer;border:1px solid transparent;overflow:hidden;transition:border-color .2s ease,color .2s ease,background .2s ease;
}
.btn-main{background:var(--ink);color:#fff;border-color:var(--ink);}
.btn-main span{position:relative;z-index:2;}
.btn-main::before{
  content:"";position:absolute;inset:0;background:var(--accent);transform:translateX(-101%);
  transition:transform .3s cubic-bezier(.2,.8,.2,1);z-index:1;
}
.btn-main:hover{color:#fff;border-color:var(--accent);}
.btn-main:hover::before{transform:translateX(0);}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line-strong);}
.btn-ghost:hover{border-color:var(--ink);background:var(--paper);color:var(--ink);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-block{width:100%;}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--ink);position:relative;}
.link-more::after{content:"";position:absolute;left:0;bottom:-4px;height:1px;width:0;background:var(--accent);transition:width .2s ease;}
.link-more:hover::after{width:100%;}

/* ---------- layout ---------- */
.section{padding:104px 0;}
.section-tight{padding:72px 0;}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap;}
.eyebrow{
  font-family:var(--mono);font-size:12px;letter-spacing:.18em;text-transform:uppercase;
  color:var(--muted);margin-bottom:14px;display:block;
}
.eyebrow.accent{color:var(--accent);}
h1{font-size:54px;line-height:1.08;font-weight:900;letter-spacing:-.02em;}
h2{font-size:36px;line-height:1.2;font-weight:800;letter-spacing:-.01em;}
h3{font-size:22px;line-height:1.4;font-weight:700;}
.lead{font-size:17px;line-height:1.85;color:var(--ink-2);}
.muted{color:var(--muted);}
.chip{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  font-size:13px;font-weight:500;background:#EFEDE8;color:var(--ink-2);white-space:nowrap;
}
.chip.orange{background:var(--accent-soft);color:var(--accent-dark);}
.chip.teal{background:rgba(14,159,140,.12);color:#0B7E6F;}

/* ---------- breadcrumb ---------- */
.crumb{background:#fff;border-bottom:1px solid var(--line);}
.crumb-inner{display:flex;align-items:center;gap:8px;padding:14px 0;font-size:13px;color:var(--muted);flex-wrap:wrap;}
.crumb-inner a{color:var(--ink-2);}
.crumb-inner a:hover{color:var(--accent);}
.crumb-inner .sep{color:var(--line-strong);}

/* ---------- page hero ---------- */
.page-hero{
  background:
    linear-gradient(rgba(20,22,27,.62),rgba(20,22,27,.62)),
    url("/assets/images/backpic/back-2.png") center/cover no-repeat;
  color:#fff;position:relative;
}
.page-hero-inner{
  display:grid;grid-template-columns:1.55fr 1fr;gap:56px;align-items:center;
  padding:64px 0 68px;
}
.page-hero h1{color:#fff;max-width:16ch;}
.page-hero .eyebrow{color:rgba(255,255,255,.68);}
.page-hero .lead{color:rgba(255,255,255,.82);margin-top:18px;max-width:52ch;}
.hero-tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:24px;}
.hero-tags .chip{background:rgba(255,255,255,.12);color:#fff;border:1px solid rgba(255,255,255,.2);}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px;}
.page-hero .btn-main{background:#fff;color:var(--ink);border-color:#fff;}
.page-hero .btn-main:hover{color:#fff;}
.page-hero .btn-ghost{color:#fff;border-color:rgba(255,255,255,.4);}
.page-hero .btn-ghost:hover{background:rgba(255,255,255,.1);color:#fff;border-color:#fff;}
.hero-summary{
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.18);
  border-radius:var(--r-card);padding:26px 24px;backdrop-filter:blur(2px);
}
.hero-summary h4{font-size:13px;letter-spacing:.14em;color:rgba(255,255,255,.6);font-family:var(--mono);font-weight:500;margin-bottom:18px;}
.summary-row{display:flex;align-items:baseline;justify-content:space-between;gap:16px;padding:12px 0;border-bottom:1px dashed rgba(255,255,255,.16);}
.summary-row:last-child{border-bottom:0;padding-bottom:0;}
.summary-row .label{font-size:14px;color:rgba(255,255,255,.78);}
.summary-row .value{font-family:var(--mono);font-variant-numeric:tabular-nums;font-size:22px;font-weight:700;color:#fff;}
.summary-row .value small{font-size:12px;font-weight:500;color:rgba(255,255,255,.65);margin-left:4px;}

/* ---------- search board ---------- */
.search-board{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-big);
  padding:40px;box-shadow:var(--sh-1);margin-top:-44px;position:relative;z-index:5;
}
.search-board h2{font-size:26px;margin-bottom:10px;}
.search-board .hint{font-size:14px;color:var(--muted);margin-bottom:24px;}
.big-search{
  display:flex;align-items:center;gap:12px;height:60px;padding:0 12px 0 22px;border-radius:999px;
  border:1px solid var(--line-strong);background:var(--paper);max-width:660px;
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.big-search:focus-within{border-color:var(--accent);background:#fff;box-shadow:0 0 0 4px var(--focus);}
.big-search input{flex:1;border:0;background:transparent;outline:none;font-size:15px;min-width:0;}
.big-search .btn-main{height:44px;padding:0 22px;flex:none;}
.hot-terms{display:flex;gap:10px;flex-wrap:wrap;margin-top:20px;align-items:center;}
.hot-terms .label{font-size:13px;color:var(--muted);}
.term-chip{
  display:inline-flex;align-items:center;height:32px;padding:0 14px;border-radius:999px;
  border:1px solid var(--line);background:#fff;font-size:13px;color:var(--ink-2);cursor:pointer;
  transition:all .2s ease;
}
.term-chip:hover{border-color:var(--accent);color:var(--accent);background:var(--accent-soft);}

/* ---------- quick paths ---------- */
.paths{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--sub);}
.path{
  padding:34px 28px;border-right:1px solid var(--line);position:relative;
}
.path:last-child{border-right:0;}
.path .num{font-family:var(--mono);font-size:13px;color:var(--accent);letter-spacing:.1em;}
.path h3{font-size:17px;font-weight:700;margin:14px 0 10px;}
.path p{font-size:14px;line-height:1.75;color:var(--muted);}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:4fr 8fr;gap:0 56px;align-items:start;}
.faq-side{position:sticky;top:150px;}
.faq-group{margin-bottom:44px;}
.faq-group:last-child{margin-bottom:0;}
.group-head{
  display:flex;align-items:center;gap:14px;padding:0 0 16px;border-bottom:2px solid var(--ink);
}
.group-head .num{font-family:var(--mono);font-size:13px;color:var(--accent);letter-spacing:.12em;}
.group-head h3{font-size:19px;font-weight:800;}
.group-head .count{margin-left:auto;font-family:var(--mono);font-size:12px;color:var(--muted);}
details.qa{border-bottom:1px solid var(--line);}
details.qa:last-child{border-bottom:0;}
details.qa summary{
  list-style:none;cursor:pointer;display:flex;align-items:flex-start;gap:16px;
  padding:20px 0;font-size:17px;font-weight:600;line-height:1.55;color:var(--ink);
}
details.qa summary::-webkit-details-marker{display:none;}
details.qa summary .q-num{font-family:var(--mono);font-size:13px;color:var(--muted);padding-top:5px;flex:none;}
details.qa summary .q-text{flex:1;}
details.qa summary .q-icon{
  flex:none;width:26px;height:26px;border-radius:50%;border:1px solid var(--line-strong);
  display:grid;place-items:center;position:relative;margin-top:3px;transition:transform .25s ease,border-color .2s ease,background .2s ease;
}
details.qa summary .q-icon::before,
details.qa summary .q-icon::after{
  content:"";position:absolute;background:var(--ink);border-radius:2px;transition:opacity .2s ease,background .2s ease;
}
details.qa summary .q-icon::before{width:11px;height:1.6px;}
details.qa summary .q-icon::after{width:1.6px;height:11px;}
details.qa[open] summary .q-icon{transform:rotate(45deg);border-color:var(--accent);background:var(--accent-soft);}
details.qa[open] summary .q-icon::before,
details.qa[open] summary .q-icon::after{background:var(--accent);}
details.qa[open] summary .q-icon::after{opacity:0;}
details.qa summary:hover{color:var(--accent);}
.qa-body{padding:0 42px 24px 42px;}
.qa-body p{font-size:15px;line-height:1.85;color:var(--ink-2);margin-bottom:10px;}
.qa-body ol{counter-reset:step;display:grid;gap:10px;margin:14px 0 6px;}
.qa-body ol li{
  counter-increment:step;position:relative;padding-left:32px;font-size:15px;line-height:1.8;color:var(--ink-2);
}
.qa-body ol li::before{
  content:counter(step,decimal-leading-zero);position:absolute;left:0;top:1px;
  font-family:var(--mono);font-size:12px;font-weight:700;color:var(--accent);
}
.qa-body .note{
  background:var(--sub);border-left:3px solid var(--accent);border-radius:0 8px 8px 0;
  padding:12px 16px;font-size:14px;color:var(--ink-2);
}

/* ---------- term cards ---------- */
.term-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.term-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:30px 28px;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.term-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--line-strong);}
.term-card .icon{
  width:44px;height:44px;border-radius:12px;background:var(--accent-soft);color:var(--accent-dark);
  display:grid;place-items:center;margin-bottom:20px;
}
.term-card h3{font-size:18px;margin-bottom:10px;}
.term-card p{font-size:14.5px;line-height:1.8;color:var(--muted);}
.term-card .tag{margin-top:18px;}

/* ---------- self-service band ---------- */
.band{background:var(--ink);color:#fff;border-radius:var(--r-big);overflow:hidden;}
.band-inner{display:grid;grid-template-columns:1.05fr 1fr;gap:0;align-items:stretch;}
.band-copy{padding:56px 52px;}
.band-copy .eyebrow{color:rgba(255,255,255,.6);}
.band-copy h2{color:#fff;margin-bottom:18px;}
.band-copy p{color:rgba(255,255,255,.78);font-size:16px;line-height:1.85;margin-bottom:28px;}
.band-list{display:grid;gap:14px;}
.band-list li{display:flex;gap:12px;font-size:15px;color:rgba(255,255,255,.86);align-items:flex-start;}
.band-list li i{
  flex:none;width:20px;height:20px;border-radius:50%;background:var(--accent);margin-top:4px;
  display:grid;place-items:center;font-size:11px;font-style:normal;font-weight:700;color:#fff;
}
.band-media{position:relative;min-height:340px;overflow:hidden;}
.band-media img{width:100%;height:100%;object-fit:cover;filter:saturate(.92) contrast(1.02);transition:transform .4s ease;}
.band-media:hover img{transform:scale(1.03);}

/* ---------- contact cards ---------- */
.contact-grid{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:24px;}
.contact-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:32px 28px;
  display:flex;flex-direction:column;gap:14px;transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.contact-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--line-strong);}
.contact-card h3{font-size:17px;}
.contact-card .big{font-family:var(--mono);font-variant-numeric:tabular-nums;font-size:23px;font-weight:700;letter-spacing:.01em;}
.contact-card p{font-size:14px;color:var(--muted);line-height:1.8;}
.contact-card.primary{background:var(--sub);border-color:var(--line-strong);}

/* ---------- CTA bar ---------- */
.cta-bar{
  background:var(--ink);border-radius:var(--r-big);padding:44px 48px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
}
.cta-bar h2{color:#fff;font-size:28px;margin-bottom:8px;}
.cta-bar p{color:rgba(255,255,255,.72);font-size:15px;}
.cta-bar .btn-main{background:var(--accent);border-color:var(--accent);}
.cta-bar .btn-main::before{background:#fff;}
.cta-bar .btn-main:hover{color:var(--ink);border-color:#fff;}

/* ---------- footer ---------- */
.site-footer{background:var(--paper);border-top:1px solid var(--line);padding:72px 0 28px;margin-top:104px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.1fr;gap:48px;}
.footer-brand p{font-size:14px;line-height:1.85;color:var(--muted);margin-top:18px;max-width:34ch;}
.footer-col h5{font-size:14px;font-weight:700;margin-bottom:18px;letter-spacing:.03em;}
.footer-col ul{display:grid;gap:12px;}
.footer-col li{font-size:14px;color:var(--muted);}
.footer-col a{font-size:14px;color:var(--ink-2);position:relative;}
.footer-col a::after{content:"";position:absolute;left:0;bottom:-3px;width:0;height:1px;background:var(--accent);transition:width .2s ease;}
.footer-col a:hover::after{width:100%;}
.footer-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--muted);
}

/* ---------- back to top ---------- */
.to-top{
  position:fixed;right:26px;bottom:26px;width:44px;height:44px;border-radius:50%;
  background:var(--ink);color:#fff;border:0;display:grid;place-items:center;cursor:pointer;
  opacity:0;pointer-events:none;transform:translateY(10px);transition:all .25s ease;z-index:1050;
}
.to-top.show{opacity:1;pointer-events:auto;transform:translateY(0);}
.to-top:hover{background:var(--accent);}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .4s ease,transform .4s ease;}
.reveal.in{opacity:1;transform:none;}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  h1{font-size:46px;}
  h2{font-size:32px;}
  .page-hero-inner{gap:40px;}
  .faq-layout{grid-template-columns:1fr;gap:36px;}
  .faq-side{position:static;}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:36px;}
}
@media (max-width:991px){
  .container{padding-left:24px;padding-right:24px;}
  .section{padding:80px 0;}
  .page-hero-inner{grid-template-columns:1fr;padding:52px 0 60px;}
  .page-hero h1{max-width:22ch;}
  .paths{grid-template-columns:repeat(2,1fr);}
  .path:nth-child(2){border-right:0;}
  .path:nth-child(1),.path:nth-child(2){border-bottom:1px solid var(--line);}
  .term-grid{grid-template-columns:1fr 1fr;}
  .term-grid .term-card:last-child{grid-column:span 2;}
  .band-inner{grid-template-columns:1fr;}
  .band-media{min-height:260px;order:-1;}
  .contact-grid{grid-template-columns:1fr 1fr;}
  .contact-card.primary{grid-column:span 2;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .search-pill{display:none;}
  .burger{display:block;}
  .btn-sm.d-none{display:none !important;}
}
@media (max-width:767px){
  .brandbar{height:64px;}
  .brandbar-inner{height:64px;}
  .brand{font-size:17px;}
  .brand-mark{width:24px;height:24px;}
  .channelbar{position:sticky;top:64px;z-index:1030;}
  h1{font-size:34px;}
  h2{font-size:26px;}
  h3{font-size:18px;}
  body{font-size:16px;}
  .section{padding:56px 0;}
  .search-board{padding:28px 22px;margin-top:-30px;}
  .big-search{height:54px;padding-left:18px;}
  .big-search .btn-main{height:40px;padding:0 16px;}
  .paths{grid-template-columns:1fr;}
  .path{border-right:0;border-bottom:1px solid var(--line);}
  .path:last-child{border-bottom:0;}
  .term-grid{grid-template-columns:1fr;}
  .term-grid .term-card:last-child{grid-column:auto;}
  .band-copy{padding:36px 26px;}
  .contact-grid{grid-template-columns:1fr;}
  .contact-card.primary{grid-column:auto;}
  .cta-bar{padding:32px 24px;flex-direction:column;align-items:flex-start;}
  .cta-bar .btn-main{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .site-footer{padding:48px 0 22px;margin-top:64px;}
  .qa-body{padding:0 0 22px 0;}
  details.qa summary{padding:18px 0;}
  .to-top{right:16px;bottom:16px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none !important;animation:none !important;}
  .reveal{opacity:1;transform:none;}
}