/* roulang page: index */
:root{
  --ink-900:#16211F;
  --ink-700:#2B3A36;
  --muted:#5C6B66;
  --cinnabar-600:#E2542C;
  --cinnabar-500:#F26A3D;
  --cinnabar-050:#FDEDE6;
  --jade-600:#2E6B5E;
  --jade-100:#E4EFEA;
  --sand-400:#F2B33D;
  --paper:#FBF7F1;
  --paper-2:#F3EDE4;
  --line:rgba(22,33,31,.10);
  --white:#ffffff;
  --grad:linear-gradient(135deg,#F26A3D 0%,#E2542C 52%,#2E6B5E 100%);
  --glass:rgba(251,247,241,.62);
  --r-lg:20px;
  --r-md:16px;
  --r-sm:12px;
  --r-pill:999px;
  --sh-1:0 6px 18px rgba(22,33,31,.06);
  --sh-2:0 18px 40px rgba(22,33,31,.12);
  --sh-3:0 24px 60px rgba(22,33,31,.16);
  --maxw:1200px;
  --nav-h:72px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink-900);
  background:var(--paper);
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
h1,h2,h3,h4,p,figure,blockquote{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
::selection{background:rgba(226,84,44,.18)}
:focus-visible{outline:3px solid rgba(226,84,44,.35);outline-offset:2px;border-radius:6px}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.section{padding:72px 0}
.section-alt{background:var(--paper-2)}
.section-dark{background:var(--ink-900);color:rgba(255,255,255,.86)}
.num{font-variant-numeric:tabular-nums}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;line-height:1.6;letter-spacing:.08em;
  color:var(--jade-600);font-weight:600;margin-bottom:12px;
}
.eyebrow::before{content:"";width:20px;height:2px;border-radius:2px;background:var(--cinnabar-600)}
.section-title{font-size:clamp(24px,3vw,36px);font-weight:700;line-height:1.25;letter-spacing:-.01em}
.section-desc{margin-top:12px;color:var(--muted);font-size:15px;line-height:1.7;max-width:720px}
.section-head{margin-bottom:32px}

/* ---------- 导航 ---------- */
.site-header{
  position:absolute;top:0;left:0;right:0;z-index:90;
  background:var(--glass);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.5);
  box-shadow:0 6px 18px rgba(22,33,31,.08);
  transition:background .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.site-header.is-stuck{
  position:fixed;
  background:rgba(251,247,241,.97);
  border-bottom-color:var(--line);
  box-shadow:0 6px 18px rgba(22,33,31,.12);
}
.nav-inner{
  max-width:var(--maxw);margin:0 auto;padding:0 24px;
  height:var(--nav-h);
  display:flex;align-items:center;gap:24px;
  transition:height .25s ease;
}
.site-header.is-stuck .nav-inner{height:60px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:34px;height:34px;border-radius:10px;flex-shrink:0;
  background:var(--grad);
  display:grid;place-items:center;
  color:#fff;font-size:15px;font-weight:700;
  box-shadow:0 6px 16px rgba(226,84,44,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:16px;font-weight:700;letter-spacing:-.01em;white-space:nowrap}
.brand-text span{font-size:11px;color:var(--muted);letter-spacing:.14em}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:12px}
.nav-link{
  position:relative;
  padding:8px 12px;border-radius:var(--r-sm);
  font-size:15px;color:var(--ink-700);
  transition:color .2s ease,background .2s ease;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:var(--cinnabar-600);transform:scaleX(0);transform-origin:left;
  transition:transform .24s ease;
}
.nav-link:hover{color:var(--cinnabar-600);background:rgba(226,84,44,.06)}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--cinnabar-600);font-weight:600}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.nav-search{
  display:flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.7);
  border:1px solid var(--line);border-radius:var(--r-pill);
  padding:7px 14px;transition:border-color .2s ease,box-shadow .2s ease;
}
.nav-search:focus-within{border-color:var(--cinnabar-600);box-shadow:0 0 0 4px rgba(226,84,44,.12)}
.nav-search svg{width:16px;height:16px;fill:var(--muted);flex-shrink:0}
.nav-search input{
  border:0;background:transparent;outline:none;
  width:130px;font-size:14px;
}
.nav-search input::placeholder{color:var(--muted)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:0;cursor:pointer;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;line-height:1;
  padding:13px 24px;
  transition:transform .18s ease,box-shadow .22s ease,background .22s ease,color .22s ease,border-color .22s ease;
  white-space:nowrap;
}
.btn-primary{
  color:#fff;background:var(--grad);
  box-shadow:0 10px 24px rgba(226,84,44,.28),inset 0 1px 0 rgba(255,255,255,.28);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 36px rgba(226,84,44,.34),inset 0 1px 0 rgba(255,255,255,.3)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 6px 16px rgba(226,84,44,.26)}
.btn-ghost{
  color:var(--ink-900);background:var(--white);border:1px solid var(--line);
}
.btn-ghost:hover{background:var(--jade-100);transform:translateY(-2px);box-shadow:var(--sh-1)}
.btn-ghost:active{transform:translateY(1px)}
.btn-glass{
  color:#fff;background:rgba(255,255,255,.14);
  border:1px solid rgba(255,255,255,.55);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
}
.btn-glass:hover{background:rgba(255,255,255,.26);transform:translateY(-2px)}
.btn-sm{padding:10px 18px;font-size:14px}
.btn:disabled{opacity:.55;filter:saturate(.6);cursor:not-allowed;transform:none}
.nav-toggle{
  display:none;
  width:42px;height:42px;border-radius:12px;
  background:rgba(255,255,255,.7);border:1px solid var(--line);
  cursor:pointer;position:relative;
}
.nav-toggle i{
  position:absolute;left:11px;right:11px;height:2px;border-radius:2px;background:var(--ink-900);
  transition:transform .25s ease,opacity .25s ease;
}
.nav-toggle i:nth-child(1){top:14px}
.nav-toggle i:nth-child(2){top:20px}
.nav-toggle i:nth-child(3){top:26px}
.nav-toggle.is-open i:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle.is-open i:nth-child(2){opacity:0}
.nav-toggle.is-open i:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  min-height:min(72vh,680px);
  display:flex;align-items:center;
  padding:132px 0 72px;
  background-image:linear-gradient(135deg,rgba(226,84,44,.9) 0%,rgba(226,84,44,.68) 46%,rgba(46,107,94,.82) 100%),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  color:#fff;
  overflow:hidden;
}
.hero::after{
  content:"";position:absolute;inset:auto 0 0 0;height:120px;
  background:linear-gradient(180deg,rgba(251,247,241,0),rgba(251,247,241,.9));
  pointer-events:none;
}
.hero-inner{position:relative;z-index:2;width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.4);
  font-size:13px;letter-spacing:.06em;margin-bottom:18px;
}
.hero-tag b{color:var(--sand-400);font-weight:700}
.hero-title{
  font-size:clamp(30px,4.6vw,52px);font-weight:700;line-height:1.2;letter-spacing:-.02em;
  max-width:880px;
  text-shadow:0 2px 18px rgba(22,33,31,.22);
}
.hero-sub{
  margin-top:18px;font-size:clamp(15px,1.4vw,18px);line-height:1.7;
  color:rgba(255,255,255,.92);max-width:640px;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.hero-stats{
  margin-top:44px;
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  background:rgba(22,33,31,.22);
  border:1px solid rgba(255,255,255,.24);
  border-radius:var(--r-md);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  overflow:hidden;
}
.stat{padding:18px 20px;border-right:1px solid rgba(255,255,255,.18)}
.stat:last-child{border-right:0}
.stat-num{
  font-size:clamp(22px,2.4vw,30px);font-weight:700;color:var(--sand-400);
  line-height:1.2;letter-spacing:-.01em;
}
.stat-label{font-size:12px;line-height:1.6;color:rgba(255,255,255,.78);margin-top:4px}

/* ---------- 目录区 ---------- */
.catalog-grid{display:grid;grid-template-columns:4fr 8fr;gap:24px;align-items:start}
.catalog-index{
  position:sticky;top:88px;
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);padding:22px;
}
.catalog-index h3{font-size:17px;font-weight:700;margin-bottom:6px}
.catalog-index p{font-size:13px;color:var(--muted);line-height:1.7;margin-bottom:16px}
.index-list{display:flex;flex-direction:column;gap:6px;counter-reset:idx}
.index-item{
  display:flex;gap:12px;align-items:flex-start;
  padding:12px;border-radius:var(--r-sm);
  transition:background .2s ease,transform .2s ease;
}
.index-item::before{
  counter-increment:idx;content:"0" counter(idx);
  font-size:12px;font-weight:700;color:var(--cinnabar-600);
  font-variant-numeric:tabular-nums;line-height:1.9;
}
.index-item strong{display:block;font-size:14px;font-weight:600;line-height:1.6}
.index-item span{display:block;font-size:12px;color:var(--muted);line-height:1.6}
.index-item:hover{background:var(--cinnabar-050);transform:translateX(3px)}
.catalog-cards{display:flex;flex-direction:column;gap:20px}
.card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);overflow:hidden;
  transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(226,84,44,.24)}
.card-media{
  position:relative;aspect-ratio:16/10;border-radius:var(--r-md);
  overflow:hidden;margin:14px 14px 0;background:var(--paper-2);
}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.card:hover .card-media img{transform:scale(1.04)}
.card-body{padding:18px 20px 22px}
.card-title{
  font-size:19px;font-weight:700;line-height:1.45;
  transition:color .2s ease;
}
.card:hover .card-title{color:var(--cinnabar-600)}
.card-summary{margin-top:10px;font-size:15px;color:var(--muted);line-height:1.7}
.meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  margin-top:14px;font-size:13px;color:var(--muted);line-height:1.6;
}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:var(--r-pill);
  background:var(--jade-100);color:var(--jade-600);
  font-size:12px;font-weight:600;line-height:1.5;
}
.badge-sand{background:rgba(242,179,61,.16);color:#9A6A10}
.badge-sand::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--sand-400)}
.dot-sep{width:3px;height:3px;border-radius:50%;background:var(--line);display:inline-block}

/* ---------- 精选条目区 ---------- */
.feature-grid{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:24px}
.f-8{grid-column:span 8}
.f-4{grid-column:span 4}
.feature-card{
  display:flex;flex-direction:column;height:100%;
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);overflow:hidden;
  transition:transform .24s ease,box-shadow .24s ease;
}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.feature-wide{flex-direction:row;align-items:stretch}
.feature-wide .feature-media{flex:0 0 46%;margin:14px 0 14px 14px;aspect-ratio:4/3}
.feature-media{
  position:relative;margin:14px 14px 0;aspect-ratio:16/10;
  border-radius:var(--r-md);overflow:hidden;background:var(--paper-2);
}
.feature-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.feature-card:hover .feature-media img{transform:scale(1.04)}
.feature-body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:10px}
.feature-title{font-size:20px;font-weight:700;line-height:1.45;transition:color .2s ease}
.feature-card:hover .feature-title{color:var(--cinnabar-600)}
.feature-text{font-size:15px;color:var(--muted);line-height:1.7}
.feature-more{margin-top:auto;font-size:13px;font-weight:600;color:var(--cinnabar-600);display:inline-flex;align-items:center;gap:6px}
.feature-more::after{content:"→";transition:transform .2s ease}
.feature-card:hover .feature-more::after{transform:translateX(4px)}

/* ---------- 最新信息 ---------- */
.news-toolbar{
  display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;
  margin-bottom:24px;
}
.filter-box{display:flex;gap:10px;flex-wrap:wrap;width:100%;max-width:460px}
.filter-input{
  flex:1 1 200px;min-width:0;
  padding:12px 18px;border-radius:var(--r-pill);
  background:var(--white);border:1px solid var(--line);
  font-size:14px;outline:none;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.filter-input::placeholder{color:var(--muted)}
.filter-input:focus{border-color:var(--cinnabar-600);box-shadow:0 0 0 4px rgba(226,84,44,.12)}
.filter-input.is-error{border-color:var(--cinnabar-600)}
.filter-hint{font-size:13px;color:var(--cinnabar-600);display:none;margin-top:8px}
.filter-hint.is-show{display:block}
.news-list{display:flex;flex-direction:column;gap:20px}
.news-item{
  display:flex;gap:20px;align-items:flex-start;
  padding:16px;border-radius:var(--r-lg);
  background:var(--white);border:1px solid var(--line);box-shadow:var(--sh-1);
  transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.news-item:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(226,84,44,.22)}
.news-thumb{
  flex:0 0 168px;width:168px;height:112px;border-radius:14px;overflow:hidden;
  background:var(--paper-2);
}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.news-item:hover .news-thumb img{transform:scale(1.05)}
.news-body{flex:1 1 auto;min-width:0}
.news-title{
  font-size:17px;font-weight:700;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .2s ease;
}
.news-item:hover .news-title{color:var(--cinnabar-600)}
.news-summary{
  margin-top:8px;font-size:14px;color:var(--muted);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-arrow{
  flex:0 0 auto;align-self:center;font-size:18px;color:var(--cinnabar-600);
  opacity:0;transform:translateX(-6px);transition:opacity .22s ease,transform .22s ease;
}
.news-item:hover .news-arrow{opacity:1;transform:translateX(0)}
.empty-state{
  border:1.5px dashed rgba(22,33,31,.22);
  border-radius:var(--r-lg);
  padding:48px 24px;text-align:center;background:rgba(255,255,255,.6);
}
.empty-icon{
  width:52px;height:52px;margin:0 auto 16px;border-radius:16px;
  background:var(--cinnabar-050);display:grid;place-items:center;
}
.empty-icon svg{width:24px;height:24px;stroke:var(--cinnabar-600);fill:none;stroke-width:1.8}
.empty-state p{font-size:15px;color:var(--muted);margin-bottom:18px}

/* ---------- 横滑推荐 ---------- */
.rail-wrap{position:relative;display:flex;align-items:center;gap:12px}
.rail{
  display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:6px 4px 18px;scrollbar-width:thin;flex:1 1 auto;
}
.rail::-webkit-scrollbar{height:6px}
.rail::-webkit-scrollbar-thumb{background:rgba(22,33,31,.16);border-radius:6px}
.rail-card{
  flex:0 0 300px;scroll-snap-align:start;
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);overflow:hidden;
  transition:transform .24s ease,box-shadow .24s ease;
}
.rail-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.rail-media{aspect-ratio:16/10;overflow:hidden;border-radius:var(--r-md);margin:14px 14px 0;background:var(--paper-2)}
.rail-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.rail-card:hover .rail-media img{transform:scale(1.05)}
.rail-body{padding:16px 18px 20px}
.rail-title{font-size:16px;font-weight:700;line-height:1.5;margin-top:10px;transition:color .2s ease}
.rail-card:hover .rail-title{color:var(--cinnabar-600)}
.rail-desc{font-size:13px;color:var(--muted);line-height:1.7;margin-top:8px}
.rail-btn{
  flex:0 0 auto;width:44px;height:44px;border-radius:50%;
  background:var(--white);border:1px solid var(--line);box-shadow:var(--sh-1);
  font-size:20px;line-height:1;color:var(--ink-700);cursor:pointer;
  display:grid;place-items:center;
  transition:background .2s ease,color .2s ease,transform .2s ease;
}
.rail-btn:hover{background:var(--cinnabar-600);color:#fff;transform:scale(1.05)}

/* ---------- CTA 条 ---------- */
.cta-band{
  position:relative;overflow:hidden;
  border-radius:24px;
  background:var(--grad);
  color:#fff;
  padding:44px 48px;
  display:flex;flex-wrap:wrap;gap:28px;
  align-items:center;justify-content:space-between;
  box-shadow:0 24px 60px rgba(226,84,44,.24);
}
.cta-band::before{
  content:"";position:absolute;right:-60px;top:-80px;width:260px;height:260px;border-radius:50%;
  background:rgba(255,255,255,.12);
}
.cta-band::after{
  content:"";position:absolute;left:30%;bottom:-120px;width:220px;height:220px;border-radius:50%;
  background:rgba(255,255,255,.08);
}
.cta-text{position:relative;z-index:2;max-width:620px}
.cta-text h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;line-height:1.3;letter-spacing:-.01em}
.cta-text p{margin-top:12px;font-size:15px;line-height:1.7;color:rgba(255,255,255,.9)}
.cta-actions{position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:12px}
.btn-white{background:#fff;color:var(--cinnabar-600)}
.btn-white:hover{transform:translateY(-2px);box-shadow:0 16px 32px rgba(22,33,31,.2)}

/* ---------- FAQ ---------- */
.faq{
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);overflow:hidden;
}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:last-child{border-bottom:0}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 24px;font-size:16px;font-weight:600;line-height:1.6;
  transition:background .2s ease,color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{background:var(--paper-2);color:var(--cinnabar-600)}
.faq-icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  background:var(--cinnabar-050);color:var(--cinnabar-600);
  display:grid;place-items:center;font-size:16px;line-height:1;
  transition:transform .25s ease,background .25s ease,color .25s ease;
}
.faq-item[open] .faq-icon{transform:rotate(45deg);background:var(--cinnabar-600);color:#fff}
.faq-answer{padding:0 24px 22px;font-size:15px;line-height:1.85;color:var(--muted);max-width:900px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.72);padding:64px 0 0;margin-top:0}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px;
}
.footer-brand{display:flex;flex-direction:column;gap:14px}
.footer-logo{display:flex;align-items:center;gap:10px}
.footer-logo .brand-mark{background:var(--grad)}
.footer-logo strong{color:#fff;font-size:16px;font-weight:700;letter-spacing:-.01em}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.66);max-width:320px}
.footer-col h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:16px;letter-spacing:.02em}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.72);transition:color .2s ease,padding-left .2s ease}
.footer-col a:hover{color:var(--sand-400);padding-left:4px}
.footer-contact{font-size:14px;line-height:1.9;color:rgba(255,255,255,.72)}
.footer-contact b{color:#fff;font-weight:600}
.footer-bottom{
  margin-top:48px;padding:22px 0;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.56);
}
.footer-bottom a{color:rgba(255,255,255,.7)}
.footer-bottom a:hover{color:var(--sand-400)}

/* ---------- 状态与动效 ---------- */
.skeleton{
  border-radius:var(--r-md);
  background:linear-gradient(90deg,var(--paper-2) 25%,#fff 37%,var(--paper-2) 63%);
  background-size:400% 100%;
  animation:shimmer 1.4s ease infinite;
}
@keyframes shimmer{0%{background-position:100% 0}100%{background-position:0 0}}
.reveal{opacity:0;transform:translateY(16px);transition:opacity .6s ease,transform .6s ease}
.reveal.is-in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .section{padding:56px 0}
  .nav-links{
    position:absolute;top:100%;left:16px;right:16px;
    flex-direction:column;align-items:stretch;gap:4px;margin-left:0;
    background:rgba(251,247,241,.96);
    -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
    border:1px solid var(--line);border-radius:var(--r-md);
    box-shadow:var(--sh-2);padding:12px;
    display:none;
  }
  .nav-links.is-open{display:flex}
  .nav-link{padding:12px 14px;font-size:15px}
  .nav-link::after{display:none}
  .nav-link.is-active{background:var(--cinnabar-050)}
  .nav-toggle{display:block}
  .nav-search{display:none}
  .catalog-grid{grid-template-columns:1fr}
  .catalog-index{position:static}
  .f-8,.f-4{grid-column:span 12}
  .feature-wide{flex-direction:column}
  .feature-wide .feature-media{flex:none;margin:14px 14px 0;aspect-ratio:16/10}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:768px){
  .container{padding:0 16px}
  .nav-inner{padding:0 16px}
  .section{padding:40px 0}
  .hero{padding:112px 0 56px;min-height:auto}
  .hero-stats{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stat{border-right:0;border-bottom:1px solid rgba(255,255,255,.18)}
  .stat:nth-child(odd){border-right:1px solid rgba(255,255,255,.18)}
  .stat:nth-last-child(-n+2){border-bottom:0}
  .news-item{flex-direction:column;gap:14px}
  .news-thumb{flex:none;width:100%;height:auto;aspect-ratio:16/10}
  .news-arrow{display:none}
  .rail-card{flex:0 0 76%}
  .rail-btn{display:none}
  .cta-band{padding:32px 24px;border-radius:20px}
  .faq-item summary{padding:18px 18px;font-size:15px}
  .faq-answer{padding:0 18px 20px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (max-width:520px){
  .brand-text span{display:none}
  .brand-text strong{font-size:14px}
  .hero-cta .btn{width:100%}
  .hero-stats{grid-template-columns:1fr}
  .stat{border-right:0 !important;border-bottom:1px solid rgba(255,255,255,.18)}
  .stat:last-child{border-bottom:0}
  .cta-actions .btn{width:100%}
  .index-item::before{display:none}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: article */
:root{
  --ink-900:#16211F;
  --ink-700:#2B3A36;
  --muted:#5C6B66;
  --cinnabar-600:#E2542C;
  --cinnabar-500:#F26A3D;
  --cinnabar-050:#FDEDE6;
  --jade-600:#2E6B5E;
  --jade-100:#E4EFEA;
  --sand-400:#F2B33D;
  --paper:#FBF7F1;
  --paper-2:#F3EDE4;
  --line:rgba(22,33,31,.10);
  --glass:rgba(251,247,241,.62);
  --grad-brand:linear-gradient(135deg,#F26A3D 0%,#E2542C 52%,#2E6B5E 100%);
  --radius-lg:20px;
  --radius-md:16px;
  --radius-sm:12px;
  --shadow-1:0 6px 18px rgba(22,33,31,.06);
  --shadow-2:0 18px 40px rgba(22,33,31,.12);
  --shadow-3:0 24px 60px rgba(22,33,31,.16);
  --space-block:72px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-900);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .2s ease}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer}
input{font:inherit}
h1,h2,h3,h4{margin:0;line-height:1.25;letter-spacing:-.01em}
p{margin:0 0 16px}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:3px solid rgba(226,84,44,.35);outline-offset:2px;border-radius:8px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.num{font-variant-numeric:tabular-nums;font-weight:700}

/* 导航 */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:90;
  background:var(--glass);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.5);
  box-shadow:var(--shadow-1);
  transition:background .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.nav-inner{
  max-width:1200px;margin:0 auto;padding:0 24px;height:72px;
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  transition:height .25s ease;
}
.site-header.is-stuck{background:rgba(251,247,241,.95);border-bottom:1px solid var(--line);box-shadow:0 8px 24px rgba(22,33,31,.08)}
.site-header.is-stuck .nav-inner{height:60px}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.brand-mark{
  width:38px;height:38px;border-radius:12px;background:var(--grad-brand);
  color:#fff;font-weight:700;font-size:19px;display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 16px rgba(226,84,44,.28);flex:0 0 auto;
}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text strong{font-size:16px;font-weight:700;letter-spacing:-.01em}
.brand-text span{font-size:11px;color:var(--muted);letter-spacing:.04em}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-link{position:relative;font-size:15px;color:var(--ink-700);padding:6px 2px;white-space:nowrap}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;
  background:var(--cinnabar-600);transform:scaleX(0);transform-origin:left;transition:transform .25s ease;
}
.nav-link:hover{color:var(--cinnabar-600)}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--ink-900);font-weight:600}
.nav-actions{display:flex;align-items:center;gap:14px}
.nav-search{
  display:flex;align-items:center;gap:8px;height:38px;padding:0 14px;
  background:rgba(255,255,255,.66);border:1px solid var(--line);border-radius:999px;
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.nav-search svg{width:15px;height:15px;fill:var(--muted);flex:0 0 auto}
.nav-search input{width:132px;border:0;background:transparent;outline:none;font-size:13px;color:var(--ink-900)}
.nav-search input::placeholder{color:var(--muted)}
.nav-search:focus-within{border-color:var(--cinnabar-600);box-shadow:0 0 0 4px rgba(226,84,44,.12);background:#fff}
.nav-toggle{display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);background:rgba(255,255,255,.7);flex-direction:column;align-items:center;justify-content:center;gap:4px}
.nav-toggle i{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink-700);transition:transform .25s ease,opacity .25s ease}
.site-header.menu-open .nav-toggle i:nth-child(1){transform:translateY(6px) rotate(45deg)}
.site-header.menu-open .nav-toggle i:nth-child(2){opacity:0}
.site-header.menu-open .nav-toggle i:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:999px;font-size:15px;font-weight:600;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,filter .2s ease;
  white-space:nowrap;
}
.btn-sm{height:38px;padding:0 18px;font-size:14px}
.btn-primary{background:linear-gradient(135deg,#F26A3D,#E2542C);color:#fff;box-shadow:0 8px 20px rgba(226,84,44,.24);border:1px solid rgba(255,255,255,.24)}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.05);box-shadow:0 14px 30px rgba(226,84,44,.3)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:rgba(255,255,255,.72);border:1px solid var(--line);color:var(--ink-900)}
.btn-ghost:hover{background:var(--jade-100);border-color:rgba(46,107,94,.24);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-outline{background:transparent;border:1px solid rgba(255,255,255,.62);color:#fff}
.btn-outline:hover{background:rgba(255,255,255,.16);transform:translateY(-2px)}
.btn:disabled{filter:saturate(40%);opacity:.7;cursor:not-allowed;transform:none}

/* 徽章 */
.badge{display:inline-flex;align-items:center;gap:6px;font-size:12px;line-height:1;padding:6px 12px;border-radius:999px;font-weight:600}
.badge-jade{background:var(--jade-100);color:var(--jade-600)}
.badge-sand{background:rgba(242,179,61,.16);color:#9A6A0B}
.badge-sand::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--sand-400)}

/* 文章头图 */
.article-hero{position:relative;overflow:hidden;padding:132px 0 56px;background:var(--ink-900)}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;transform:scale(1.02)}
.hero-veil{position:absolute;inset:0;background:var(--grad-brand);opacity:.88}
.article-hero-inner{position:relative;z-index:2;max-width:900px}
.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:10px;font-size:13px;color:rgba(255,255,255,.82);margin-bottom:20px}
.breadcrumb a{color:rgba(255,255,255,.82);border-bottom:1px solid rgba(255,255,255,.28);padding-bottom:1px}
.breadcrumb a:hover{color:#fff;border-color:#fff}
.breadcrumb .sep{color:rgba(255,255,255,.45)}
.breadcrumb .crumb-current{color:#fff;font-weight:600}
.article-title{
  color:#fff;font-size:clamp(30px,4.6vw,52px);font-weight:700;line-height:1.2;letter-spacing:-.02em;
  margin-bottom:20px;text-shadow:0 6px 24px rgba(22,33,31,.24);
}
.article-meta{display:flex;align-items:center;flex-wrap:wrap;gap:10px;font-size:13px;color:rgba(255,255,255,.86)}
.article-meta .meta-dot{color:rgba(255,255,255,.42)}
.article-meta time{font-variant-numeric:tabular-nums}

/* 主体 */
main{display:block}
.article-main{padding:56px 24px 72px}
.article-layout{display:grid;grid-template-columns:minmax(0,760px) 300px;gap:40px;justify-content:center;align-items:start}
.article-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-1);padding:40px 44px;
}
.article-body{max-width:760px;font-size:16px;line-height:1.9;color:var(--ink-700);word-break:break-word}
.article-body h2{
  font-size:clamp(24px,3vw,32px);color:var(--ink-900);font-weight:700;
  margin:44px 0 18px;padding-left:16px;position:relative;
}
.article-body h2::before{content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:5px;border-radius:3px;background:var(--cinnabar-600)}
.article-body h3{font-size:20px;font-weight:600;color:var(--ink-900);margin:32px 0 14px}
.article-body h4{font-size:17px;font-weight:600;color:var(--ink-900);margin:24px 0 12px}
.article-body p{margin:0 0 20px}
.article-body a{color:var(--cinnabar-600);border-bottom:1px solid rgba(226,84,44,.32)}
.article-body a:hover{color:var(--cinnabar-500);border-color:var(--cinnabar-500)}
.article-body strong{color:var(--ink-900);font-weight:700}
.article-body ul,.article-body ol{margin:0 0 22px;padding-left:4px}
.article-body ul li{position:relative;padding-left:22px;margin-bottom:10px}
.article-body ul li::before{content:"";position:absolute;left:4px;top:.78em;width:7px;height:7px;border-radius:50%;background:var(--jade-600);opacity:.65}
.article-body ol{counter-reset:li}
.article-body ol li{position:relative;padding-left:30px;margin-bottom:10px;counter-increment:li}
.article-body ol li::before{
  content:counter(li);position:absolute;left:0;top:.3em;width:20px;height:20px;border-radius:6px;
  background:var(--cinnabar-050);color:var(--cinnabar-600);font-size:12px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
}
.article-body blockquote{
  margin:26px 0;padding:18px 22px;background:var(--jade-100);border-left:4px solid var(--jade-600);
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;color:var(--ink-700);font-size:15px;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--radius-md);margin:22px 0;width:100%;height:auto}
.article-body table{width:100%;border-collapse:collapse;margin:22px 0;font-size:14px}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left}
.article-body th{background:var(--paper-2);font-weight:600;color:var(--ink-900)}
.article-body code{background:var(--paper-2);padding:2px 6px;border-radius:6px;font-size:14px}
.article-body hr{border:0;border-top:1px solid var(--line);margin:32px 0}

/* 文章尾部 */
.article-foot{margin-top:36px;padding-top:24px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:18px;align-items:center;justify-content:space-between}
.tag-row{display:flex;flex-wrap:wrap;gap:8px}
.tag{font-size:12px;padding:6px 12px;border-radius:999px;background:var(--paper-2);color:var(--muted);border:1px solid var(--line)}
.tag:hover{background:var(--jade-100);color:var(--jade-600);border-color:rgba(46,107,94,.2)}
.foot-actions{display:flex;gap:10px;flex-wrap:wrap}

/* 侧栏 */
.side-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-1);padding:22px;margin-bottom:20px;
}
.side-card h3{font-size:16px;font-weight:700;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.side-card h3 span{width:4px;height:16px;border-radius:3px;background:var(--cinnabar-600);display:inline-block}
.side-list li{display:flex;gap:10px;font-size:14px;color:var(--muted);line-height:1.75;padding:9px 0;border-bottom:1px dashed var(--line)}
.side-list li:last-child{border-bottom:0;padding-bottom:0}
.side-list li b{color:var(--cinnabar-600);font-weight:700;font-variant-numeric:tabular-nums}
.side-nav li a{display:flex;align-items:center;justify-content:space-between;gap:8px;font-size:14px;color:var(--ink-700);padding:10px 12px;border-radius:var(--radius-sm);transition:background .2s ease,color .2s ease}
.side-nav li a:hover{background:var(--paper-2);color:var(--cinnabar-600)}
.side-sticky{position:sticky;top:88px}

/* 空态 */
.empty-state{
  border:1.5px dashed var(--line);border-radius:var(--radius-md);padding:48px 24px;text-align:center;background:var(--paper);
}
.empty-state svg{width:44px;height:44px;fill:none;stroke:var(--cinnabar-600);stroke-width:1.6;margin:0 auto 14px}
.empty-state h3{font-size:20px;margin-bottom:8px}
.empty-state p{color:var(--muted);font-size:15px;margin-bottom:20px}

/* 相关推荐 */
.section{padding:var(--space-block) 0}
.section-alt{background:var(--paper-2)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:30px;flex-wrap:wrap}
.section-head h2{font-size:clamp(24px,3vw,32px);font-weight:700}
.section-head p{color:var(--muted);font-size:15px;margin:8px 0 0}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;
  box-shadow:var(--shadow-1);display:flex;flex-direction:column;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(226,84,44,.22)}
.card-media{position:relative;aspect-ratio:16/10;overflow:hidden}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.card:hover .card-media img{transform:scale(1.04)}
.card-body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{font-size:18px;font-weight:600;line-height:1.5;transition:color .2s ease}
.card:hover .card-body h3{color:var(--cinnabar-600)}
.card-body p{font-size:14px;color:var(--muted);line-height:1.75;margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-meta{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--muted);margin-top:auto;padding-top:6px}
.card-link{margin-top:auto}

/* 返回与翻页 */
.pager{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-top:8px}
.pager-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);padding:18px 20px;
  box-shadow:var(--shadow-1);transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
  display:flex;flex-direction:column;gap:6px;
}
.pager-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:rgba(226,84,44,.22)}
.pager-item span{font-size:12px;color:var(--muted)}
.pager-item strong{font-size:15px;font-weight:600;line-height:1.5}
.pager-item:hover strong{color:var(--cinnabar-600)}
.pager-item.is-home{background:var(--grad-brand);color:#fff;border-color:transparent}
.pager-item.is-home span,.pager-item.is-home strong{color:#fff}

/* FAQ */
.faq-wrap{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow-1);overflow:hidden}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:last-child{border-bottom:0}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;font-size:16px;font-weight:600;color:var(--ink-900);transition:background .2s ease,color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{background:var(--paper);color:var(--cinnabar-600)}
.faq-item summary i{
  position:relative;width:20px;height:20px;flex:0 0 auto;border-radius:50%;background:var(--cinnabar-050);
  transition:transform .25s ease;
}
.faq-item summary i::before,.faq-item summary i::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--cinnabar-600);border-radius:2px;transform:translate(-50%,-50%);
}
.faq-item summary i::before{width:10px;height:2px}
.faq-item summary i::after{width:2px;height:10px}
.faq-item[open] summary i{transform:rotate(135deg)}
.faq-item[open] summary{background:var(--paper)}
.faq-answer{padding:0 24px 22px;font-size:15px;line-height:1.85;color:var(--muted)}

/* CTA */
.cta-band{
  background:var(--grad-brand);border-radius:24px;padding:44px 48px;color:#fff;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  box-shadow:var(--shadow-2);position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-60px;width:240px;height:240px;border-radius:50%;
  background:rgba(255,255,255,.10);
}
.cta-band h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;margin-bottom:10px;position:relative;z-index:1}
.cta-band p{font-size:15px;color:rgba(255,255,255,.9);margin:0;max-width:560px;position:relative;z-index:1}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;position:relative;z-index:1}

/* 页脚 */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.78);padding:56px 0 24px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px}
.footer-logo{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.footer-logo strong{color:#fff;font-size:16px}
.footer-brand p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.66);margin:0;max-width:340px}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:16px}
.footer-col ul li{margin-bottom:10px}
.footer-col ul li a{font-size:14px;color:rgba(255,255,255,.72)}
.footer-col ul li a:hover{color:var(--sand-400)}
.footer-contact p{font-size:14px;color:rgba(255,255,255,.66);margin:0 0 8px}
.footer-contact b{color:var(--sand-400);font-weight:700}
.footer-bottom{
  margin-top:36px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.56);
}
.footer-bottom a{color:rgba(255,255,255,.72)}
.footer-bottom a:hover{color:var(--sand-400)}

@media (max-width:1024px){
  :root{--space-block:56px}
  .nav-links{
    position:absolute;top:100%;left:16px;right:16px;display:none;flex-direction:column;align-items:stretch;gap:6px;
    background:rgba(251,247,241,.97);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
    border:1px solid var(--line);border-radius:var(--radius-md);padding:14px;box-shadow:var(--shadow-2);
  }
  .site-header.menu-open .nav-links{display:flex}
  .nav-link{padding:10px 8px;border-radius:10px}
  .nav-link:hover{background:var(--paper-2)}
  .nav-link::after{display:none}
  .nav-toggle{display:flex}
  .nav-search{display:none}
  .article-layout{grid-template-columns:minmax(0,760px)}
  .side-sticky{position:static}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:768px){
  :root{--space-block:40px}
  .container{padding:0 16px}
  .nav-inner{padding:0 16px;height:64px}
  .brand-text span{display:none}
  .brand-text strong{font-size:15px}
  .article-hero{padding:112px 0 40px}
  .article-main{padding:32px 16px 56px}
  .article-card{padding:26px 20px}
  .grid-3{grid-template-columns:1fr}
  .pager{grid-template-columns:1fr}
  .cta-band{padding:30px 22px;border-radius:20px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .faq-item summary{padding:16px 18px;font-size:15px}
  .faq-answer{padding:0 18px 18px}
}
@media (max-width:520px){
  .article-title{font-size:26px}
  .article-card{padding:22px 16px}
  .btn{height:42px;padding:0 18px;font-size:14px}
  .article-foot{flex-direction:column;align-items:flex-start}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1}
}

/* roulang page: category1 */
:root{
  --ink-900:#16211F; --ink-700:#2B3A36; --muted:#5C6B66;
  --cinnabar-600:#E2542C; --cinnabar-500:#F26A3D; --cinnabar-050:#FDEDE6;
  --jade-600:#2E6B5E; --jade-100:#E4EFEA;
  --sand-400:#F2B33D;
  --paper:#FBF7F1; --paper-2:#F3EDE4; --line:rgba(22,33,31,.10);
  --grad-brand:linear-gradient(135deg,#F26A3D 0%,#E2542C 52%,#2E6B5E 100%);
  --glass:rgba(251,247,241,.62);
  --r-xl:24px; --r-lg:20px; --r-md:16px; --r-sm:12px;
  --sh-1:0 6px 18px rgba(22,33,31,.06);
  --sh-2:0 18px 40px rgba(22,33,31,.12);
  --sh-3:0 24px 60px rgba(22,33,31,.16);
  --ease:.25s ease;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;line-height:1.85;color:var(--ink-700);background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
h1,h2,h3,h4{margin:0;color:var(--ink-900);line-height:1.25;font-weight:700}
h1{font-size:clamp(30px,4.6vw,52px);letter-spacing:-.02em}
h2{font-size:clamp(24px,3vw,36px)}
h3{font-size:21px;font-weight:600;line-height:1.4}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
strong,b{color:var(--ink-900)}
:focus-visible{outline:3px solid rgba(226,84,44,.35);outline-offset:2px;border-radius:8px}
::selection{background:var(--cinnabar-050);color:var(--cinnabar-600)}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:72px 0}
.section-alt{background:var(--paper-2)}
.section-head{max-width:760px;margin-bottom:32px}
.section-head p{margin-top:12px;color:var(--muted)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:.08em;
  color:var(--cinnabar-600);text-transform:uppercase;margin-bottom:12px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--cinnabar-600);border-radius:2px}

/* ---------- 导航 ---------- */
.site-header{position:absolute;top:0;left:0;right:0;z-index:90}
.site-header .nav-inner{
  position:relative;max-width:1200px;margin:18px auto 0;padding:0 18px 0 20px;height:72px;
  display:flex;align-items:center;gap:18px;
  background:var(--glass);backdrop-filter:blur(14px) saturate(140%);-webkit-backdrop-filter:blur(14px) saturate(140%);
  border:1px solid rgba(255,255,255,.5);border-radius:999px;box-shadow:0 10px 30px rgba(22,33,31,.10);
  transition:height var(--ease),background var(--ease),border-radius var(--ease);
}
.site-header.is-stuck{
  position:fixed;top:0;background:rgba(251,247,241,.96);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);box-shadow:0 8px 24px rgba(22,33,31,.08);
  animation:dropIn .28s ease both;
}
.site-header.is-stuck .nav-inner{margin:0 auto;height:60px;background:transparent;border-color:transparent;box-shadow:none;border-radius:0}
@keyframes dropIn{from{transform:translateY(-100%);opacity:.5}to{transform:translateY(0);opacity:1}}

.brand{display:flex;align-items:center;gap:12px;flex:none}
.brand-mark{
  width:40px;height:40px;border-radius:13px;flex:none;
  background:var(--grad-brand);color:#fff;display:grid;place-items:center;
  font-size:19px;font-weight:700;box-shadow:0 6px 16px rgba(226,84,44,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text strong{font-size:16px;color:var(--ink-900);letter-spacing:.01em}
.brand-text span{font-size:11.5px;color:var(--muted);letter-spacing:.06em}

.nav-links{flex:1;display:flex;align-items:center;justify-content:center;gap:26px}
.nav-link{position:relative;font-size:15px;color:var(--ink-700);padding:6px 2px;transition:color var(--ease)}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:-2px;width:0;height:2px;border-radius:2px;
  background:var(--cinnabar-600);transform:translateX(-50%);transition:width var(--ease);
}
.nav-link:hover{color:var(--cinnabar-600)}
.nav-link:hover::after,.nav-link.is-active::after{width:20px}
.nav-link.is-active{color:var(--ink-900);font-weight:600}

.nav-actions{display:flex;align-items:center;gap:12px;flex:none}
.nav-search{
  display:flex;align-items:center;gap:8px;height:40px;padding:0 14px;border-radius:999px;
  background:rgba(255,255,255,.55);border:1px solid var(--line);transition:border-color var(--ease),box-shadow var(--ease);
}
.nav-search svg{width:16px;height:16px;fill:var(--muted);flex:none}
.nav-search input{width:132px;border:0;background:transparent;font-size:14px;outline:none}
.nav-search input::placeholder{color:var(--muted)}
.nav-search:focus-within{border-color:var(--cinnabar-600);box-shadow:0 0 0 4px rgba(226,84,44,.12)}

.nav-toggle{display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);background:rgba(255,255,255,.6);flex-direction:column;justify-content:center;align-items:center;gap:5px}
.nav-toggle i{width:18px;height:2px;background:var(--ink-900);border-radius:2px;transition:transform var(--ease),opacity var(--ease)}
.site-header.nav-open .nav-toggle i:nth-child(1){transform:translateY(7px) rotate(45deg)}
.site-header.nav-open .nav-toggle i:nth-child(2){opacity:0}
.site-header.nav-open .nav-toggle i:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:999px;font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:transform var(--ease),box-shadow var(--ease),background var(--ease),color var(--ease),border-color var(--ease);
}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-primary{background:var(--grad-brand);color:#fff;box-shadow:0 10px 24px rgba(226,84,44,.28);position:relative;overflow:hidden}
.btn-primary::before{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(255,255,255,.22),rgba(255,255,255,0) 62%);opacity:.9;pointer-events:none}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 34px rgba(226,84,44,.34);filter:brightness(1.04)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:rgba(251,247,241,.2);border-color:rgba(255,255,255,.62);color:#fff;backdrop-filter:blur(6px)}
.btn-ghost:hover{background:rgba(251,247,241,.32);transform:translateY(-2px)}
.btn-secondary{background:var(--paper);border-color:var(--line);color:var(--ink-900);box-shadow:var(--sh-1)}
.btn-secondary:hover{background:var(--jade-100);border-color:rgba(46,107,94,.24);transform:translateY(-2px)}
.btn:focus-visible{outline:3px solid rgba(226,84,44,.35);outline-offset:2px}
.btn[disabled]{opacity:.6;cursor:not-allowed;transform:none}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;
  padding:4px 12px;border-radius:999px;background:var(--jade-100);color:var(--jade-600);white-space:nowrap;
}
.badge-sand{background:rgba(242,179,61,.16);color:#94620a}
.badge-sand::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--sand-400)}
.badge-line{background:transparent;border:1px solid var(--line);color:var(--muted)}

/* ---------- Hero ---------- */
.page-hero{
  position:relative;padding:156px 0 64px;overflow:hidden;
  background-image:url("/assets/images/backpic/back-2.png");background-size:cover;background-position:center;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(22,33,31,.82) 0%,rgba(226,84,44,.78) 52%,rgba(46,107,94,.82) 100%);
}
.page-hero::after{
  content:"";position:absolute;right:-80px;top:-60px;width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle,rgba(242,179,61,.24),rgba(242,179,61,0) 70%);pointer-events:none;
}
.page-hero .container{position:relative;z-index:2}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:rgba(255,255,255,.75);margin-bottom:18px}
.crumbs a{color:rgba(255,255,255,.75);transition:color var(--ease)}
.crumbs a:hover{color:#fff}
.crumbs .sep{width:1px;height:12px;background:rgba(255,255,255,.34)}
.crumbs .current{color:#fff}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:#fff;
  padding:6px 14px;border-radius:999px;background:rgba(255,255,255,.16);
  border:1px solid rgba(255,255,255,.34);backdrop-filter:blur(6px);margin-bottom:20px;
}
.hero-tag i{width:6px;height:6px;border-radius:50%;background:var(--sand-400)}
.page-hero h1{color:#fff;max-width:880px}
.page-hero .hero-sub{margin-top:18px;max-width:640px;font-size:17px;line-height:1.75;color:rgba(255,255,255,.86)}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.stat-strip{
  display:flex;flex-wrap:wrap;gap:0;margin-top:44px;
  background:rgba(251,247,241,.14);border:1px solid rgba(255,255,255,.28);
  border-radius:var(--r-lg);backdrop-filter:blur(10px);overflow:hidden;
}
.stat-item{flex:1 1 180px;padding:18px 22px;border-right:1px solid rgba(255,255,255,.2)}
.stat-item:last-child{border-right:0}
.stat-item b{display:block;font-size:26px;font-weight:700;color:var(--sand-400);font-variant-numeric:tabular-nums;line-height:1.2}
.stat-item span{display:block;margin-top:4px;font-size:12px;color:rgba(255,255,255,.82);letter-spacing:.04em}

/* ---------- 主栅格 ---------- */
.layout{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,8fr);gap:32px;align-items:start}
.toc{
  position:sticky;top:96px;padding:26px;border-radius:var(--r-lg);
  background:#fff;border:1px solid var(--line);box-shadow:var(--sh-1);
}
.toc-title{font-size:15px;font-weight:700;color:var(--ink-900);letter-spacing:.04em;padding-bottom:14px;border-bottom:1px solid var(--line)}
.toc ol{margin-top:8px}
.toc li{border-bottom:1px dashed rgba(22,33,31,.08)}
.toc li:last-child{border-bottom:0}
.toc a{display:flex;gap:12px;align-items:baseline;padding:12px 2px;font-size:14.5px;color:var(--ink-700);transition:color var(--ease),transform var(--ease)}
.toc a span{font-size:12px;font-weight:700;color:var(--cinnabar-600);font-variant-numeric:tabular-nums}
.toc a:hover{color:var(--cinnabar-600);transform:translateX(3px)}
.toc .btn{width:100%;margin-top:18px}
.toc-note{margin-top:14px;font-size:12.5px;line-height:1.7;color:var(--muted)}

/* ---------- 条目流 ---------- */
.entry-flow{display:flex;flex-direction:column;gap:20px}
.entry-card{
  display:grid;grid-template-columns:236px minmax(0,1fr);gap:22px;padding:20px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-1);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.entry-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(226,84,44,.22)}
.entry-thumb{position:relative;aspect-ratio:16/10;border-radius:var(--r-md);overflow:hidden;background:var(--paper-2)}
.entry-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.entry-card:hover .entry-thumb img{transform:scale(1.04)}
.entry-body{display:flex;flex-direction:column;gap:10px;min-width:0}
.entry-top{display:flex;align-items:center;gap:10px}
.entry-index{font-size:12px;font-weight:700;color:var(--cinnabar-600);font-variant-numeric:tabular-nums;letter-spacing:.08em}
.entry-card h3{margin-top:2px}
.entry-card:hover h3{color:var(--cinnabar-600)}
.entry-card p{font-size:15px;line-height:1.75;color:var(--muted)}
.point-list{display:grid;gap:8px;margin-top:4px}
.point-list li{position:relative;padding-left:20px;font-size:14.5px;color:var(--ink-700)}
.point-list li::before{content:"";position:absolute;left:0;top:11px;width:8px;height:8px;border-radius:50%;background:var(--jade-100);border:2px solid var(--jade-600)}
.entry-meta{display:flex;align-items:center;gap:8px;font-size:12.5px;color:var(--muted);margin-top:2px}
.entry-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--muted);opacity:.6}

/* ---------- 步骤 ---------- */
.step-list{counter-reset:step;display:grid;gap:16px}
.step-item{
  display:grid;grid-template-columns:52px minmax(0,1fr);gap:18px;align-items:start;
  padding:22px 24px;background:#fff;border:1px solid var(--line);border-radius:var(--r-md);box-shadow:var(--sh-1);
  transition:transform var(--ease),box-shadow var(--ease);
}
.step-item:hover{transform:translateY(-3px);box-shadow:var(--sh-2)}
.step-num{
  width:44px;height:44px;border-radius:14px;display:grid;place-items:center;
  background:var(--cinnabar-050);color:var(--cinnabar-600);font-weight:700;font-size:16px;font-variant-numeric:tabular-nums;
}
.step-item h3{font-size:19px}
.step-item p{margin-top:8px;font-size:15px;color:var(--muted)}

/* ---------- 核对清单 ---------- */
.check-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.check-card{
  padding:24px;border-radius:var(--r-lg);background:#fff;border:1px solid var(--line);box-shadow:var(--sh-1);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.check-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(46,107,94,.22)}
.check-card h3{display:flex;align-items:center;gap:10px;font-size:18px}
.check-card h3 i{width:10px;height:10px;border-radius:3px;background:var(--jade-600);flex:none}
.check-card ul{margin-top:14px;display:grid;gap:10px}
.check-card li{position:relative;padding-left:22px;font-size:14.5px;color:var(--ink-700)}
.check-card li::before{
  content:"";position:absolute;left:0;top:9px;width:12px;height:12px;border-radius:4px;
  background:var(--cinnabar-050);border:1px solid rgba(226,84,44,.32);
}

/* ---------- FAQ ---------- */
.faq-wrap{border-radius:var(--r-md);background:#fff;border:1px solid var(--line);box-shadow:var(--sh-1);overflow:hidden}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:last-child{border-bottom:0}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;font-size:16px;font-weight:600;color:var(--ink-900);transition:background var(--ease),color var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{background:var(--paper);color:var(--cinnabar-600)}
.faq-item summary .plus{
  position:relative;width:22px;height:22px;flex:none;border-radius:50%;background:var(--cinnabar-050);
  transition:transform var(--ease),background var(--ease);
}
.faq-item summary .plus::before,.faq-item summary .plus::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--cinnabar-600);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-item summary .plus::before{width:10px;height:2px}
.faq-item summary .plus::after{width:2px;height:10px}
.faq-item[open] summary .plus{transform:rotate(45deg);background:var(--jade-100)}
.faq-item[open] summary .plus::before,.faq-item[open] summary .plus::after{background:var(--jade-600)}
.faq-answer{padding:0 24px 22px;font-size:15px;line-height:1.85;color:var(--muted)}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-xl);padding:46px 44px;
  background:var(--grad-brand);color:#fff;box-shadow:var(--sh-2);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:26px;
}
.cta-band::after{
  content:"";position:absolute;right:-60px;bottom:-80px;width:260px;height:260px;border-radius:50%;
  background:rgba(255,255,255,.12);
}
.cta-band h2{color:#fff;font-size:clamp(22px,2.6vw,30px);max-width:520px}
.cta-band p{margin-top:12px;max-width:560px;font-size:15px;color:rgba(255,255,255,.88);position:relative;z-index:2}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;position:relative;z-index:2}
.cta-band .btn-secondary{background:rgba(251,247,241,.94);border-color:transparent}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.72);padding:64px 0 26px;margin-top:72px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px}
.footer-logo{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer-logo strong{color:#fff;font-size:16px}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.66);max-width:320px}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px;letter-spacing:.04em}
.footer-col ul{display:grid;gap:10px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.72);transition:color var(--ease)}
.footer-col a:hover{color:var(--sand-400)}
.footer-contact p{font-size:14px;line-height:1.9;color:rgba(255,255,255,.66)}
.footer-contact b{color:rgba(255,255,255,.9);font-weight:600}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.56);
}
.footer-bottom a{color:rgba(255,255,255,.72)}
.footer-bottom a:hover{color:var(--sand-400)}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .section{padding:56px 0}
  .layout{grid-template-columns:1fr}
  .toc{position:static}
  .toc ol{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 20px}
  .nav-links{
    position:absolute;top:calc(100% + 12px);left:0;right:0;flex:initial;
    flex-direction:column;align-items:stretch;gap:2px;padding:14px;display:none;
    background:rgba(251,247,241,.96);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
    border:1px solid var(--line);border-radius:18px;box-shadow:var(--sh-2);
  }
  .site-header.nav-open .nav-links{display:flex}
  .nav-link{padding:12px 10px;border-radius:10px}
  .nav-link::after{display:none}
  .nav-link:hover,.nav-link.is-active{background:var(--paper-2)}
  .nav-toggle{display:flex}
  .nav-links .nav-link{font-size:15px}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:768px){
  .container{padding:0 16px}
  .section{padding:40px 0}
  .site-header .nav-inner{margin:12px 12px 0;height:64px;padding:0 12px 0 14px;border-radius:20px}
  .brand-text span{display:none}
  .nav-search{display:none}
  .page-hero{padding:132px 0 48px}
  .stat-item{flex:1 1 50%;border-right:0;border-bottom:1px solid rgba(255,255,255,.2);padding:14px 18px}
  .stat-item:nth-child(odd){border-right:1px solid rgba(255,255,255,.2)}
  .entry-card{grid-template-columns:1fr;gap:16px}
  .entry-thumb{aspect-ratio:16/9}
  .check-grid{grid-template-columns:1fr}
  .step-item{grid-template-columns:1fr;gap:12px;padding:20px}
  .toc ol{grid-template-columns:1fr}
  .cta-band{padding:32px 24px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .site-footer{padding:48px 0 22px;margin-top:48px}
}
@media (max-width:520px){
  .brand-text strong{font-size:14px}
  .hero-actions .btn,.cta-actions .btn{width:100%}
  .stat-item b{font-size:22px}
  .faq-item summary{padding:16px 18px;font-size:15px}
  .faq-answer{padding:0 18px 18px}
}

/* roulang page: category2 */
/* ============ 设计变量 ============ */
:root{
  --ink-900:#16211F;
  --ink-700:#2B3A36;
  --muted:#5C6B66;
  --cinnabar-600:#E2542C;
  --cinnabar-500:#F26A3D;
  --cinnabar-050:#FDEDE6;
  --jade-600:#2E6B5E;
  --jade-100:#E4EFEA;
  --sand-400:#F2B33D;
  --paper:#FBF7F1;
  --paper-2:#F3EDE4;
  --white:#FFFFFF;
  --line:rgba(22,33,31,.10);
  --line-strong:rgba(22,33,31,.18);

  --grad-brand:linear-gradient(135deg,#F26A3D 0%,#E2542C 48%,#2E6B5E 100%);
  --grad-cta:linear-gradient(135deg,#F26A3D 0%,#E2542C 100%);
  --glass:rgba(251,247,241,.62);

  --r-xl:24px;
  --r-lg:20px;
  --r-md:16px;
  --r-sm:12px;
  --r-pill:999px;

  --sh-1:0 6px 18px rgba(22,33,31,.06);
  --sh-2:0 18px 40px rgba(22,33,31,.12);
  --sh-3:0 24px 60px rgba(22,33,31,.16);

  --container:1200px;
  --sp-section:72px;
  --ease:cubic-bezier(.2,.7,.3,1);
}

/* ============ 基础 reset ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-900);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease);}
img{display:block;max-width:100%;height:auto;}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer;}
input{font:inherit;}
b,strong{font-weight:700;}
::selection{background:var(--cinnabar-050);color:var(--cinnabar-600);}

h1{font-size:clamp(30px,4.6vw,52px);font-weight:700;line-height:1.2;letter-spacing:-.02em;}
h2{font-size:clamp(24px,3vw,36px);font-weight:700;line-height:1.28;letter-spacing:-.01em;}
h3{font-size:clamp(19px,1.6vw,22px);font-weight:600;line-height:1.4;}
p{color:var(--ink-700);}
.num{font-variant-numeric:tabular-nums;font-weight:700;}

:focus-visible{outline:3px solid rgba(226,84,44,.35);outline-offset:2px;border-radius:6px;}

/* ============ 容器 ============ */
.container{max-width:var(--container);margin:0 auto;padding:0 24px;width:100%;}
.section{padding:var(--sp-section) 0;}
.section-alt{background:var(--paper-2);}

.section-head{max-width:760px;margin-bottom:32px;}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.08em;
  color:var(--jade-600);text-transform:uppercase;margin-bottom:12px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--cinnabar-600);border-radius:2px;}
.section-head p{margin-top:14px;font-size:15px;line-height:1.8;color:var(--muted);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;line-height:1;
  cursor:pointer;border:1px solid transparent;
  transition:transform .2s var(--ease),box-shadow .25s var(--ease),background .25s var(--ease),color .25s var(--ease),filter .2s var(--ease);
  white-space:nowrap;
}
.btn-sm{padding:10px 20px;font-size:14px;}
.btn-primary{
  background:var(--grad-cta);color:#fff;
  box-shadow:0 10px 24px rgba(226,84,44,.28), inset 0 1px 0 rgba(255,255,255,.28);
}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.06);box-shadow:0 16px 34px rgba(226,84,44,.34), inset 0 1px 0 rgba(255,255,255,.3);color:#fff;}
.btn-primary:active{transform:translateY(1px);box-shadow:0 6px 16px rgba(226,84,44,.26);}
.btn-ghost{
  background:var(--white);color:var(--ink-900);border-color:var(--line);
  box-shadow:var(--sh-1);
}
.btn-ghost:hover{background:var(--jade-100);border-color:rgba(46,107,94,.28);transform:translateY(-2px);color:var(--jade-600);}
.btn-ghost:active{transform:translateY(1px);}
.btn-glass{
  background:rgba(255,255,255,.16);color:#fff;border-color:rgba(255,255,255,.55);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
}
.btn-glass:hover{background:rgba(255,255,255,.28);transform:translateY(-2px);color:#fff;}
.btn:disabled,.btn.is-disabled{filter:saturate(.4);opacity:.7;cursor:not-allowed;transform:none;box-shadow:none;}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;line-height:1.6;
  background:var(--jade-100);color:var(--jade-600);
}
.badge-data{background:rgba(242,179,61,.16);color:#B4781A;}
.badge-data::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--sand-400);}
.tag{
  display:inline-flex;align-items:center;padding:5px 14px;border-radius:var(--r-pill);
  font-size:13px;color:var(--ink-700);background:var(--white);border:1px solid var(--line);
  transition:.2s var(--ease);
}
.tag:hover{border-color:rgba(226,84,44,.4);color:var(--cinnabar-600);background:var(--cinnabar-050);}

/* ============ 导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:120;
  background:var(--glass);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.5);
  box-shadow:0 6px 24px rgba(22,33,31,.06);
  transition:background .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.site-header.is-scrolled{
  background:rgba(251,247,241,.95);
  border-bottom-color:var(--line);
  box-shadow:0 10px 30px rgba(22,33,31,.10);
}
.nav-inner{
  max-width:var(--container);margin:0 auto;padding:0 24px;height:72px;
  display:flex;align-items:center;gap:24px;
  transition:height .25s ease;
}
.site-header.is-scrolled .nav-inner{height:60px;}

.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.brand-mark{
  width:40px;height:40px;border-radius:12px;
  display:grid;place-items:center;
  background:var(--grad-cta);color:#fff;font-weight:700;font-size:19px;
  box-shadow:0 8px 18px rgba(226,84,44,.28);
  flex:0 0 auto;
}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-text strong{font-size:16px;font-weight:700;letter-spacing:-.01em;color:var(--ink-900);}
.brand-text span{font-size:11.5px;color:var(--muted);letter-spacing:.04em;}

.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav-link{
  position:relative;padding:8px 14px;border-radius:var(--r-pill);
  font-size:14.5px;font-weight:500;color:var(--ink-700);
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:0;width:0;height:2px;
  background:var(--cinnabar-600);border-radius:2px;
  transform:translateX(-50%);transition:width .25s var(--ease);
}
.nav-link:hover{color:var(--cinnabar-600);background:rgba(253,237,230,.75);}
.nav-link.is-active{color:var(--cinnabar-600);font-weight:600;}
.nav-link.is-active::after{width:22px;}

.nav-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.nav-search{
  display:flex;align-items:center;gap:8px;
  padding:8px 14px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.7);border:1px solid var(--line);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
}
.nav-search svg{width:15px;height:15px;fill:var(--muted);flex:0 0 auto;}
.nav-search input{
  border:0;background:transparent;outline:none;width:120px;
  font-size:13.5px;color:var(--ink-900);
}
.nav-search input::placeholder{color:#93A09B;}
.nav-search:focus-within{border-color:var(--cinnabar-600);background:#fff;box-shadow:0 0 0 4px rgba(226,84,44,.12);}

.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  border:1px solid var(--line);background:rgba(255,255,255,.75);
  flex-direction:column;align-items:center;justify-content:center;gap:4px;
  transition:background .2s var(--ease);
}
.nav-toggle i{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink-900);transition:transform .25s var(--ease),opacity .2s var(--ease);}
.nav-toggle[aria-expanded="true"] i:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] i:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] i:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

/* ============ 分类页封面条 ============ */
.page-hero{
  position:relative;overflow:hidden;
  padding:158px 0 68px;
  background:var(--grad-brand);
  color:#fff;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:url("/assets/images/backpic/back-2.png") center/cover no-repeat;
  opacity:.20;mix-blend-mode:luminosity;
}
.page-hero::after{
  content:"";position:absolute;right:-120px;top:-80px;width:460px;height:460px;
  border-radius:50%;background:radial-gradient(circle,rgba(242,179,61,.30),transparent 68%);
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:2;}

.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:rgba(255,255,255,.78);margin-bottom:22px;
}
.breadcrumb a{color:rgba(255,255,255,.78);}
.breadcrumb a:hover{color:#fff;text-decoration:underline;}
.breadcrumb .sep{opacity:.55;}
.breadcrumb .current{color:#fff;font-weight:600;}

.page-hero h1{color:#fff;max-width:16em;text-shadow:0 2px 18px rgba(22,33,31,.18);}
.hero-sub{
  margin-top:18px;max-width:640px;
  font-size:clamp(15px,1.4vw,18px);line-height:1.8;
  color:rgba(255,255,255,.9);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}

.hero-stats{
  margin-top:44px;display:flex;flex-wrap:wrap;align-items:center;gap:0;
  border-top:1px solid rgba(255,255,255,.28);padding-top:26px;
}
.hero-stat{
  padding:0 34px;position:relative;min-width:150px;
}
.hero-stat:first-child{padding-left:0;}
.hero-stat + .hero-stat::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:1px;height:34px;background:rgba(255,255,255,.28);
}
.hero-stat b{
  display:block;font-size:clamp(24px,2.6vw,32px);line-height:1.2;
  font-weight:700;color:var(--sand-400);font-variant-numeric:tabular-nums;
}
.hero-stat span{display:block;margin-top:6px;font-size:12px;color:rgba(255,255,255,.86);letter-spacing:.04em;}

/* ============ 通用卡片 ============ */
.card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:20px;box-shadow:var(--sh-1);height:100%;
  display:flex;flex-direction:column;gap:16px;
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(226,84,44,.22);}
.card-media{
  position:relative;width:100%;aspect-ratio:16/10;border-radius:var(--r-md);
  overflow:hidden;background:var(--paper-2);
}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease);}
.card:hover .card-media img{transform:scale(1.04);}
.card-body{display:flex;flex-direction:column;gap:10px;flex:1;}
.card-title{font-size:20px;font-weight:600;line-height:1.4;color:var(--ink-900);transition:color .25s var(--ease);}
.card:hover .card-title{color:var(--cinnabar-600);}
.card-text{font-size:15px;line-height:1.75;color:var(--muted);}
.card-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:12.5px;color:var(--muted);margin-top:auto;
}
.card-meta .dot{opacity:.5;}

/* ============ 双列错位卡片流 ============ */
.offset-grid{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));
  gap:24px;align-items:start;
}
.offset-grid > *:nth-child(even){margin-top:44px;}

/* ============ 排查步骤 ============ */
.step-list{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(212px,1fr));gap:20px;
}
.step{
  position:relative;background:var(--white);border:1px solid var(--line);
  border-radius:var(--r-lg);padding:26px 22px 22px;box-shadow:var(--sh-1);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
}
.step:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(46,107,94,.28);}
.step b.step-no{
  display:inline-grid;place-items:center;width:38px;height:38px;border-radius:12px;
  background:var(--cinnabar-050);color:var(--cinnabar-600);
  font-size:16px;font-weight:700;font-variant-numeric:tabular-nums;margin-bottom:14px;
  transition:background .25s var(--ease),color .25s var(--ease);
}
.step:hover b.step-no{background:var(--cinnabar-600);color:#fff;}
.step h3{font-size:18px;margin-bottom:8px;}
.step p{font-size:14.5px;line-height:1.75;color:var(--muted);}

/* ============ 现象与处理对照 ============ */
.compare{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;
}
.compare-col{
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:8px 24px 20px;box-shadow:var(--sh-1);
}
.compare-col h3{
  display:flex;align-items:center;gap:10px;
  padding:20px 0 16px;font-size:17px;border-bottom:1px solid var(--line);margin-bottom:6px;
}
.compare-col h3 .dot-mark{width:10px;height:10px;border-radius:50%;flex:0 0 auto;}
.compare-col.problem .dot-mark{background:var(--cinnabar-600);}
.compare-col.solution .dot-mark{background:var(--jade-600);}
.compare-col li{
  display:flex;gap:12px;padding:14px 0;border-bottom:1px dashed var(--line);
  font-size:14.8px;line-height:1.75;color:var(--ink-700);
}
.compare-col li:last-child{border-bottom:0;}
.compare-col li span{
  flex:0 0 auto;width:22px;height:22px;border-radius:50%;
  display:grid;place-items:center;font-size:11.5px;font-weight:700;line-height:1;
  background:var(--paper-2);color:var(--muted);margin-top:4px;
}

/* ============ 索引条 ============ */
.path-bar{
  display:flex;flex-wrap:wrap;gap:12px;align-items:center;
  background:var(--paper-2);border:1px solid var(--line);
  border-radius:var(--r-lg);padding:18px 22px;
}
.path-bar strong{font-size:14px;color:var(--ink-900);margin-right:4px;}

/* ============ FAQ ============ */
.faq-wrap{
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);padding:8px 26px;overflow:hidden;
}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:last-child{border-bottom:0;}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 0;font-size:16px;font-weight:600;color:var(--ink-900);
  transition:color .2s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--cinnabar-600);}
.faq-item summary .plus{
  flex:0 0 auto;position:relative;width:22px;height:22px;border-radius:50%;
  border:1px solid var(--line-strong);transition:transform .3s var(--ease),border-color .3s var(--ease),background .3s var(--ease);
}
.faq-item summary .plus::before,
.faq-item summary .plus::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--cinnabar-600);
  transform:translate(-50%,-50%);border-radius:2px;transition:opacity .25s var(--ease);
}
.faq-item summary .plus::before{width:10px;height:1.6px;}
.faq-item summary .plus::after{width:1.6px;height:10px;}
.faq-item[open] summary{color:var(--cinnabar-600);}
.faq-item[open] summary .plus{transform:rotate(45deg);border-color:var(--cinnabar-600);background:var(--cinnabar-050);}
.faq-answer{padding:0 0 24px;font-size:15px;line-height:1.85;color:var(--muted);max-width:900px;}

/* ============ 底部 CTA ============ */
.cta-band{
  position:relative;overflow:hidden;
  background:var(--grad-brand);
  border-radius:var(--r-xl);
  padding:44px 46px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;
  box-shadow:var(--sh-2);
  color:#fff;
}
.cta-band::after{
  content:"";position:absolute;left:-80px;bottom:-140px;width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.22),transparent 70%);
}
.cta-band > *{position:relative;z-index:2;}
.cta-band h2{color:#fff;font-size:clamp(22px,2.4vw,30px);}
.cta-band p{margin-top:12px;max-width:560px;font-size:15px;line-height:1.8;color:rgba(255,255,255,.9);}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.72);padding:64px 0 0;margin-top:var(--sp-section);}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;
  padding-bottom:44px;
}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);margin-top:16px;max-width:330px;}
.footer-logo{display:flex;align-items:center;gap:12px;}
.footer-logo strong{color:#fff;font-size:16px;font-weight:700;}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:18px;}
.footer-col ul{display:flex;flex-direction:column;gap:12px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.72);}
.footer-col a:hover{color:var(--sand-400);}
.footer-contact p{font-size:14px;line-height:1.9;color:rgba(255,255,255,.66);}
.footer-contact b{color:rgba(255,255,255,.9);font-weight:600;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0 26px;
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.55);
}
.footer-bottom a{color:rgba(255,255,255,.7);}
.footer-bottom a:hover{color:var(--sand-400);}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  :root{--sp-section:56px;}
  .nav-search{display:none;}
  .nav-toggle{display:flex;}
  .nav-links{
    position:absolute;left:16px;right:16px;top:calc(100% + 10px);
    flex-direction:column;align-items:stretch;gap:4px;
    padding:14px;margin:0;border-radius:var(--r-lg);
    background:rgba(251,247,241,.94);
    backdrop-filter:blur(16px) saturate(150%);
    -webkit-backdrop-filter:blur(16px) saturate(150%);
    border:1px solid var(--line);box-shadow:var(--sh-3);
    opacity:0;visibility:hidden;transform:translateY(-8px);
    transition:opacity .25s var(--ease),transform .25s var(--ease),visibility .25s;
  }
  .nav-links.is-open{opacity:1;visibility:visible;transform:translateY(0);}
  .nav-link{padding:12px 14px;font-size:15px;}
  .nav-link.is-active{background:var(--cinnabar-050);}
  .nav-link::after{display:none;}
  .page-hero{padding:140px 0 56px;}
  .hero-stat{padding:0 22px;min-width:130px;}
  .cta-band{padding:36px 30px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .footer-brand{grid-column:1 / -1;}
}

@media (max-width:768px){
  :root{--sp-section:40px;}
  .container{padding:0 16px;}
  .nav-inner{padding:0 16px;height:64px;gap:12px;}
  .brand-text span{display:none;}
  .brand-text strong{font-size:14.5px;}
  .brand-mark{width:36px;height:36px;font-size:17px;border-radius:10px;}
  .nav-actions .btn-primary{display:none;}
  .page-hero{padding:126px 0 48px;}
  .hero-actions{margin-top:26px;}
  .hero-actions .btn{flex:1 1 200px;}
  .hero-stats{gap:22px 0;padding-top:22px;margin-top:32px;}
  .hero-stat{padding:0 18px;min-width:0;flex:1 1 45%;}
  .hero-stat + .hero-stat::before{display:none;}
  .offset-grid{grid-template-columns:1fr;gap:20px;}
  .offset-grid > *:nth-child(even){margin-top:0;}
  .compare{grid-template-columns:1fr;}
  .faq-wrap{padding:4px 18px;}
  .faq-item summary{font-size:15.2px;padding:18px 0;gap:12px;}
  .cta-band{padding:30px 22px;border-radius:var(--r-lg);}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 160px;}
  .footer-grid{grid-template-columns:1fr;gap:30px;padding-bottom:34px;}
  .footer-bottom{font-size:12.5px;}
}

@media (max-width:520px){
  body{font-size:15.5px;}
  .card{padding:16px;border-radius:var(--r-md);}
  .card-title{font-size:18px;}
  .compare-col{padding:8px 18px 16px;}
  .path-bar{padding:16px;}
  .hero-stat{flex:1 1 100%;padding:0;}
}