/* roulang page: index */
:root{
  --ink-900:#0B1F1B;
  --primary-700:#0E4C3F;
  --primary-600:#14614F;
  --primary-100:#E4EFEA;
  --accent-500:#E4762A;
  --accent-100:#FBEBDD;
  --sand-50:#F7F5EF;
  --paper:#FFFFFF;
  --line:#E3DED2;
  --line-strong:#CFC8B8;
  --text-900:#16211E;
  --text-600:#5A6663;
  --text-400:#8C968F;
  --ok:#1E7A5A;
  --warn:#C98A00;
  --danger:#B03A2E;
  --r-lg:16px; --r-md:12px; --r-sm:8px; --r-pill:999px;
  --sh-1:0 1px 2px rgba(11,31,27,.05), 0 10px 30px -18px rgba(11,31,27,.25);
  --sh-2:0 2px 4px rgba(11,31,27,.06), 0 18px 40px -20px rgba(11,31,27,.32);
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;
  --sp-1:4px; --sp-2:8px; --sp-3:12px; --sp-4:16px; --sp-5:24px;
  --sp-6:32px; --sp-7:48px; --sp-8:64px; --sp-9:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0; padding:0; font-family:var(--font); font-size:17px; line-height:1.85;
  color:var(--text-900); background:var(--sand-50);
  font-weight:400; letter-spacing:0; text-align:left;
  -webkit-font-smoothing:antialiased;
}
img{display:block; max-width:100%; height:auto; border-radius:var(--r-md); background:#EDEAE1;}
a{color:var(--primary-700); text-decoration:none; transition:color 180ms ease-out, border-color 180ms ease-out, background-color 180ms ease-out;}
a:hover{color:var(--accent-500);}
button{font-family:inherit; font-size:inherit; cursor:pointer;}
input{font-family:inherit;}
ul,ol{margin:0; padding:0; list-style:none;}
h1,h2,h3,h4{margin:0; font-weight:700; letter-spacing:-.01em; color:var(--text-900); color:var(--text-900);}
p{margin:0;}
:focus-visible{outline:2px solid var(--accent-500); outline-offset:2px; border-radius:var(--r-sm);}
.container{width:100%; max-width:1200px; margin:0 auto; padding:0 24px;}
.num{font-variant-numeric:tabular-nums; font-family:var(--mono);}

/* ---------- header ---------- */
.site-header{
  position:sticky; top:0; z-index:50;
  background:var(--sand-50);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:grid; grid-template-columns:7fr 5fr; align-items:center;
  gap:24px; min-height:64px;
}
.header-left{display:flex; align-items:center; gap:28px; min-width:0;}
.logo{display:flex; align-items:center; gap:10px; color:var(--primary-700); flex-shrink:0;}
.logo:hover{color:var(--primary-600);}
.logo-mark{width:34px; height:34px; color:var(--primary-700); flex-shrink:0;}
.logo-text{display:flex; flex-direction:column; line-height:1.15;}
.logo-text strong{font-size:17px; font-weight:700; letter-spacing:-.01em;}
.logo-text em{font-style:normal; font-size:11px; letter-spacing:.14em; color:var(--text-400); margin-top:2px;}
.main-nav{display:flex; align-items:center; gap:22px; min-width:0; overflow:hidden;}
.main-nav a{
  position:relative; font-size:15px; font-weight:600; color:var(--text-600);
  padding:6px 0; white-space:nowrap;
}
.main-nav a::after{
  content:""; position:absolute; left:0; right:0; bottom:0; height:2px;
  background:var(--accent-500); transform:scaleX(0); transform-origin:left;
  transition:transform 180ms ease-out;
}
.main-nav a:hover{color:var(--text-900);}
.main-nav a:hover::after{transform:scaleX(1);}
.main-nav a.is-active{color:var(--primary-700);}
.main-nav a.is-active::before{
  content:""; position:absolute; left:-10px; top:50%; width:5px; height:5px;
  margin-top:-2.5px; border-radius:50%; background:var(--accent-500);
}
.header-right{display:flex; align-items:center; justify-content:flex-end; gap:12px;}
.nav-search{
  display:flex; align-items:center; height:40px; padding:0 12px;
  border:1px solid var(--line-strong); border-radius:var(--r-md);
  background:var(--paper); width:44px; overflow:hidden;
  transition:width 200ms ease-out, border-color 180ms ease-out;
}
.nav-search.is-open{width:320px;}
.nav-search input{
  border:0; outline:0; background:transparent; width:100%; font-size:14px;
  color:var(--text-900); margin-left:8px; opacity:0; transition:opacity 160ms ease-out;
}
.nav-search.is-open input{opacity:1;}
.nav-search button{
  border:0; background:transparent; padding:0; display:flex; align-items:center;
  color:var(--text-600); flex-shrink:0;
}
.nav-search button:hover{color:var(--primary-700);}
.nav-toggle{
  display:none; border:1px solid var(--line-strong); background:var(--paper);
  width:40px; height:40px; border-radius:var(--r-md); align-items:center; justify-content:center;
  color:var(--text-900);
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  height:48px; padding:0 22px; border-radius:var(--r-md);
  font-size:15px; font-weight:600; border:1px solid transparent;
  transition:background-color 180ms ease-out, color 180ms ease-out, border-color 180ms ease-out, transform 180ms ease-out, box-shadow 180ms ease-out;
  white-space:nowrap;
}
.btn-sm{height:40px; padding:0 16px; font-size:14px;}
.btn-xs{height:34px; padding:0 14px; font-size:13px;}
.btn-primary{background:var(--primary-700); color:#fff; box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--primary-600); color:#fff; transform:translateY(-1px); box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(1px); box-shadow:none;}
.btn-ghost{background:transparent; border-color:var(--line-strong); color:var(--text-900);}
.btn-ghost:hover{border-color:var(--primary-600); color:var(--primary-700); transform:translateY(-1px);}
.btn-soft{background:var(--primary-100); color:var(--primary-700);}
.btn-soft:hover{background:#d7e7e0; color:var(--primary-700); transform:translateY(-1px);}
.btn-accent{background:var(--accent-500); color:var(--text-900);}
.btn-accent:hover{background:#d0691f; color:var(--text-900); transform:translateY(-1px);}
.btn-outline-light{background:transparent; border:1px solid rgba(255,255,255,.45); color:#fff;}
.btn-outline-light:hover{border-color:#fff; color:#fff; transform:translateY(-1px);}
.btn[disabled],.btn.is-disabled{opacity:.45; cursor:not-allowed; transform:none; box-shadow:none;}

/* ---------- hero ---------- */
.hero-split{background:var(--sand-50); padding:48px 0 0;}
.hero-grid{display:grid; grid-template-columns:7fr 5fr; gap:40px; align-items:start;}
.hero-copy{padding:8px 0 64px;}
.hero-badge{
  display:inline-flex; align-items:center; gap:8px; height:26px; padding:0 12px;
  border-radius:var(--r-pill); background:var(--accent-100); color:#8a4413;
  font-size:12px; font-weight:600; letter-spacing:.02em; margin-bottom:20px;
}
.hero-badge i{width:6px; height:6px; border-radius:50%; background:var(--accent-500); display:block;}
h1{
  font-size:clamp(30px,4.2vw,52px); line-height:1.22; font-weight:700;
  letter-spacing:-.01em; margin-bottom:22px;
}
.hero-sub{
  font-size:17px; line-height:1.85; color:var(--text-600); max-width:620px; margin-bottom:32px;
}
.hero-actions{display:flex; flex-wrap:wrap; gap:14px; margin-bottom:34px;}
.trust-row{display:flex; flex-wrap:wrap; gap:26px; padding-top:24px; border-top:1px solid var(--line);}
.trust-item{display:flex; align-items:center; gap:8px; font-size:14px; color:var(--text-600); font-weight:600;}
.trust-item svg{color:var(--primary-600); flex-shrink:0;}
.hero-visual{position:relative; padding-bottom:56px;}
.hero-visual > img{
  width:100%; aspect-ratio:16/11; object-fit:cover; border-radius:var(--r-lg);
}
.hero-visual::after{
  content:""; position:absolute; left:0; right:0; top:0;
  aspect-ratio:16/11; border-radius:var(--r-lg);
  background:linear-gradient(200deg, rgba(11,31,27,0) 42%, rgba(11,31,27,.34) 100%);
  pointer-events:none;
}
.hero-card{
  position:absolute; right:0; bottom:0; width:min(360px,86%);
  background:rgba(255,255,255,.94); border:1px solid var(--line); border-radius:var(--r-lg);
  padding:20px; box-shadow:var(--sh-2);
}
.hero-card h3{font-size:15px; margin-bottom:12px;}
.hero-login{display:flex; gap:8px; margin-bottom:14px;}
.hero-login input{
  flex:1; height:44px; padding:0 14px; border:1px solid var(--line);
  border-radius:var(--r-md); background:var(--paper); font-size:14px; color:var(--text-900);
  transition:border-color 180ms ease-out, box-shadow 180ms ease-out;
}
.hero-login input::placeholder{color:var(--text-400);}
.hero-login input:focus{outline:0; border-color:var(--primary-600); box-shadow:0 0 0 3px var(--primary-100);}
.hero-stat{
  display:flex; align-items:baseline; justify-content:space-between;
  padding-top:14px; border-top:1px dashed var(--line);
  font-size:13px; color:var(--text-400);
}
.hero-stat b{font-size:20px; color:var(--accent-500); font-weight:700; margin-right:4px;}

/* ---------- section base ---------- */
.section{padding:80px 0;}
.section-alt{background:var(--paper); border-top:1px solid var(--line); border-bottom:1px solid var(--line);}
.section-head{
  display:flex; align-items:flex-end; justify-content:space-between; gap:24px;
  margin-bottom:40px;
}
.eyebrow{
  font-size:12px; font-weight:600; letter-spacing:.14em; color:var(--accent-500);
  margin-bottom:10px; text-transform:none;
}
.section-head h2{font-size:clamp(24px,2.6vw,34px); line-height:1.3; margin-bottom:8px;}
.section-head p{font-size:15px; color:var(--text-600); max-width:640px;}
.link-more{
  display:inline-flex; align-items:center; gap:6px; font-size:14px; font-weight:600;
  color:var(--primary-700); border-bottom:1px solid transparent; padding-bottom:2px; flex-shrink:0;
}
.link-more:hover{border-bottom-color:var(--accent-500);}

/* ---------- quick strip ---------- */
.quick-strip{display:grid; grid-template-columns:repeat(4,1fr); gap:16px;}
.quick-card{
  display:flex; align-items:center; gap:14px; padding:18px 20px;
  background:var(--paper); border:1px solid var(--line); border-radius:var(--r-md);
  transition:border-color 180ms ease-out, transform 180ms ease-out, box-shadow 180ms ease-out;
}
.quick-card:hover{border-color:var(--primary-600); transform:translateY(-2px); box-shadow:var(--sh-1);}
.quick-icon{
  width:42px; height:42px; flex-shrink:0; border-radius:var(--r-sm);
  background:var(--primary-100); color:var(--primary-700);
  display:flex; align-items:center; justify-content:center;
}
.quick-body{min-width:0; flex:1;}
.quick-body strong{display:block; font-size:15px; font-weight:700; color:var(--text-900); margin-bottom:2px;}
.quick-body span{display:block; font-size:13px; line-height:1.6; color:var(--text-600);}
.quick-arrow{color:var(--line-strong); flex-shrink:0; transition:color 180ms ease-out, transform 180ms ease-out;}
.quick-card:hover .quick-arrow{color:var(--accent-500); transform:translateX(2px);}

/* ---------- benefit matrix ---------- */
.matrix-hint{display:none; font-size:12px; color:var(--text-400); margin-bottom:8px; text-align:right;}
.matrix-wrap{overflow-x:auto; border:1px solid var(--line); border-radius:var(--r-lg); background:var(--paper);}
.benefit-matrix{width:100%; min-width:820px; border-collapse:separate; border-spacing:0;}
.benefit-matrix th,.benefit-matrix td{
  height:44px; padding:0 18px; text-align:left; font-size:14px;
  border-bottom:1px solid var(--line); vertical-align:middle; white-space:nowrap;
}
.benefit-matrix thead th{
  position:sticky; top:0; z-index:3; height:56px; background:var(--paper);
  font-size:13px; font-weight:600; letter-spacing:.06em; color:var(--text-400);
  border-bottom:1px solid var(--line-strong);
}
.benefit-matrix thead th .tier-name{display:block; font-size:15px; letter-spacing:0; color:var(--text-900); font-weight:700;}
.benefit-matrix tbody tr:hover td{background:var(--primary-100);}
.benefit-matrix tbody tr:last-child td{border-bottom:0;}
.benefit-matrix th:first-child,.benefit-matrix td:first-child{
  position:sticky; left:0; z-index:2; background:var(--paper);
  font-weight:600; color:var(--text-900); min-width:160px;
}
.benefit-matrix thead th:first-child{z-index:4;}
.benefit-matrix tbody tr:hover td:first-child{background:var(--primary-100);}
.col-rec{background:var(--primary-100); border-left:1px solid var(--accent-500); border-right:1px solid var(--accent-500);}
.benefit-matrix thead th.col-rec{background:var(--primary-100);}
.benefit-matrix tbody tr:hover td.col-rec{background:#d7e7e0;}
.rec-badge{
  display:inline-flex; align-items:center; height:22px; padding:0 10px; margin-left:8px;
  border-radius:var(--r-pill); background:var(--accent-500); color:var(--text-900);
  font-size:12px; font-weight:600; letter-spacing:0;
}
.cell-yes{color:var(--ok); display:inline-flex; align-items:center;}
.cell-no{color:var(--text-400); display:inline-flex; align-items:center;}
.cell-text{font-size:13px; color:var(--text-600);}

/* ---------- tier ladder ---------- */
.tier-ladder{display:flex; align-items:flex-start; gap:24px;}
.tier-card{
  flex:1; background:var(--paper); border:1px solid var(--line); border-radius:var(--r-lg);
  padding:28px 24px; display:flex; flex-direction:column;
  transition:border-color 180ms ease-out, transform 180ms ease-out, box-shadow 180ms ease-out;
}
.tier-card:hover{border-color:var(--primary-600); transform:translateY(-2px); box-shadow:var(--sh-2);}
.tier-card:nth-child(1){min-height:320px;}
.tier-card:nth-child(2){min-height:380px;}
.tier-card:nth-child(3){min-height:440px;}
.tier-no{font-family:var(--mono); font-size:13px; color:var(--accent-500); font-weight:700; letter-spacing:.08em; margin-bottom:14px;}
.tier-card h3{font-size:20px; margin-bottom:6px;}
.tier-meta{font-size:13px; color:var(--text-400); margin-bottom:20px;}
.tier-list{margin-bottom:24px; flex:1;}
.tier-list li{
  position:relative; padding-left:20px; font-size:15px; line-height:1.75;
  color:var(--text-600); margin-bottom:10px;
}
.tier-list li::before{
  content:""; position:absolute; left:0; top:11px; width:6px; height:6px;
  border-radius:50%; background:var(--primary-600);
}
.tier-card.is-featured{background:var(--primary-100); border-color:var(--accent-500);}

/* ---------- vault grid ---------- */
.vault-grid{display:grid; grid-template-columns:repeat(12,1fr); gap:24px;}
.vault-card{
  position:relative; background:var(--paper); border:1px solid var(--line);
  border-radius:var(--r-lg); overflow:hidden; display:flex; flex-direction:column;
  transition:border-color 180ms ease-out, box-shadow 180ms ease-out, transform 180ms ease-out;
}
.vault-card:hover{border-color:var(--primary-600); box-shadow:var(--sh-2); transform:translateY(-2px);}
.vault-wide{grid-column:span 8;}
.vault-tall{grid-column:span 4;}
.vault-third{grid-column:span 4;}
.vault-media{position:relative; overflow:hidden;}
.vault-media img{width:100%; height:100%; object-fit:cover; border-radius:0; aspect-ratio:16/9;}
.vault-wide .vault-media img{aspect-ratio:16/10;}
.vault-body{padding:20px 22px 22px;}
.badge{
  display:inline-flex; align-items:center; height:22px; padding:0 10px;
  border-radius:var(--r-pill); font-size:12px; font-weight:600;
  background:var(--primary-100); color:var(--primary-700); margin-bottom:12px;
}
.badge-accent{background:var(--accent-100); color:#8a4413;}
.vault-body h3{
  font-size:18px; line-height:1.45; margin-bottom:8px;
  display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden;
}
.vault-body p{font-size:14px; line-height:1.75; color:var(--text-600);}
.lock-overlay{
  position:absolute; inset:0; background:rgba(22,33,30,.42);
  display:flex; flex-direction:column; align-items:center; justify-content:center; gap:10px;
  color:#fff; font-size:13px; font-weight:600;
  transition:background-color 180ms ease-out;
}
.vault-card:hover .lock-overlay{background:rgba(22,33,30,.52);}
.lock-overlay span{
  display:inline-flex; align-items:center; gap:6px; height:34px; padding:0 14px;
  border-radius:var(--r-md); background:rgba(255,255,255,.94); color:var(--text-900); font-size:13px;
}

/* ---------- news list ---------- */
.news-list{display:grid; grid-template-columns:repeat(3,1fr); gap:24px;}
.news-card{
  background:var(--paper); border:1px solid var(--line); border-radius:var(--r-lg);
  overflow:hidden; display:flex; flex-direction:column;
  transition:border-color 180ms ease-out, box-shadow 180ms ease-out, transform 180ms ease-out;
}
.news-card:hover{border-color:var(--primary-600); box-shadow:var(--sh-2); transform:translateY(-2px);}
.news-card:hover h3{color:var(--primary-700);}
.news-feature{grid-column:span 2; flex-direction:row;}
.news-feature .news-thumb{width:52%; flex-shrink:0;}
.news-feature .news-thumb img{aspect-ratio:16/10; height:100%; border-radius:0;}
.news-thumb img{width:100%; aspect-ratio:16/9; object-fit:cover; border-radius:0;}
.news-body{padding:18px 20px 20px; display:flex; flex-direction:column; flex:1;}
.news-body h3{
  font-size:18px; line-height:1.45; margin:0 0 8px;
  display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden;
  transition:color 180ms ease-out;
}
.news-body p{
  font-size:15px; line-height:1.75; color:var(--text-600); margin-bottom:14px;
  display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden;
}
.news-meta{
  display:flex; align-items:center; gap:12px; margin-top:auto;
  font-size:13px; color:var(--text-400); padding-top:12px; border-top:1px solid var(--line);
}
.news-meta .dot{width:4px; height:4px; border-radius:50%; background:var(--line-strong);}
.empty-state{
  min-height:240px; display:flex; flex-direction:column; align-items:center; justify-content:center;
  gap:14px; background:var(--paper); border:1px dashed var(--line-strong); border-radius:var(--r-lg);
  color:var(--text-400); font-size:15px; text-align:center; padding:32px;
}
.empty-state svg{color:var(--line-strong);}

/* ---------- faq ---------- */
.faq-accordion{max-width:820px; margin:0 auto;}
.faq-accordion details{
  border-bottom:1px solid var(--line); background:transparent;
}
.faq-accordion details:first-child{border-top:1px solid var(--line);}
.faq-accordion summary{
  list-style:none; cursor:pointer; display:flex; align-items:center; justify-content:space-between;
  gap:20px; padding:22px 4px; font-size:17px; font-weight:600; color:var(--text-900);
  transition:color 180ms ease-out;
}
.faq-accordion summary::-webkit-details-marker{display:none;}
.faq-accordion summary:hover{color:var(--primary-700);}
.faq-accordion summary .chev{color:var(--text-400); flex-shrink:0; transition:transform 180ms ease-out, color 180ms ease-out;}
.faq-accordion details[open] summary .chev{transform:rotate(180deg); color:var(--accent-500);}
.faq-answer{padding:0 4px 24px; max-width:720px;}
.faq-answer p{font-size:16px; line-height:1.85; color:var(--text-600);}
.faq-answer p + p{margin-top:12px;}

/* ---------- cta band ---------- */
.cta-band{
  background:var(--ink-900); color:#fff; position:relative; overflow:hidden;
  padding:72px 0;
}
.cta-band::before{
  content:""; position:absolute; right:-120px; bottom:-160px; width:640px; height:640px;
  border:2px solid rgba(255,255,255,.08); border-radius:50%; pointer-events:none;
}
.cta-grid{display:grid; grid-template-columns:7fr 5fr; gap:40px; align-items:center; position:relative; z-index:1;}
.cta-grid h2{color:#fff; font-size:clamp(24px,2.6vw,34px); line-height:1.3; margin-bottom:18px;}
.cta-points{display:flex; flex-direction:column; gap:10px;}
.cta-points li{display:flex; align-items:center; gap:10px; font-size:15px; color:rgba(255,255,255,.86);}
.cta-points svg{color:var(--accent-500); flex-shrink:0;}
.cta-actions{display:flex; flex-wrap:wrap; gap:14px; justify-content:flex-end;}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-900); color:rgba(255,255,255,.72); padding:64px 0 0; font-size:14px;}
.footer-grid{display:grid; grid-template-columns:2fr 1fr 1fr 1.2fr; gap:40px; padding-bottom:48px;}
.footer-brand .logo{color:#fff; margin-bottom:16px;}
.footer-brand .logo-mark{color:var(--accent-500);}
.footer-brand .logo-text strong{color:#fff;}
.footer-brand .logo-text em{color:rgba(255,255,255,.5);}
.footer-brand p{font-size:14px; line-height:1.85; color:rgba(255,255,255,.6); max-width:360px;}
.footer-col h4{font-size:14px; color:#fff; font-weight:700; margin-bottom:16px; letter-spacing:.02em;}
.footer-col li{margin-bottom:10px;}
.footer-col a{color:rgba(255,255,255,.72); font-size:14px; border-bottom:1px solid transparent; padding-bottom:1px;}
.footer-col a:hover{color:var(--accent-500); border-bottom-color:var(--accent-500);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 28px; display:flex; flex-wrap:wrap; gap:12px;
  align-items:center; justify-content:space-between;
  font-size:13px; color:rgba(255,255,255,.48);
}
.footer-bottom a{color:rgba(255,255,255,.6);}
.footer-bottom a:hover{color:var(--accent-500);}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .header-inner{grid-template-columns:7fr 5fr;}
  .hero-grid{gap:32px;}
}
@media (max-width:1023px){
  .section{padding:64px 0;}
  .header-inner{grid-template-columns:auto 1fr auto; gap:16px;}
  .main-nav{display:none;}
  .nav-toggle{display:flex;}
  .hero-grid{grid-template-columns:1fr; gap:36px;}
  .hero-copy{padding-bottom:8px;}
  .hero-split{padding-top:32px;}
  .hero-visual{padding-bottom:0;}
  .hero-card{position:static; width:100%; margin-top:16px;}
  .hero-visual::after{display:none;}
  .quick-strip{grid-template-columns:repeat(2,1fr);}
  .tier-ladder{flex-wrap:wrap;}
  .tier-card{flex:0 0 calc(50% - 12px); min-height:auto !important;}
  .vault-wide,.vault-tall,.vault-third{grid-column:span 6;}
  .news-list{grid-template-columns:repeat(2,1fr);}
  .news-feature{grid-column:span 2; flex-direction:column;}
  .news-feature .news-thumb{width:100%;}
  .cta-grid{grid-template-columns:1fr; gap:28px;}
  .cta-actions{justify-content:flex-start;}
  .footer-grid{grid-template-columns:1fr 1fr; gap:32px;}
}
@media (max-width:767px){
  body{font-size:16px; line-height:1.8;}
  .container{padding:0 20px;}
  .section{padding:48px 0;}
  .header-inner{min-height:56px;}
  .logo-text em{display:none;}
  .nav-search.is-open{position:absolute; left:16px; right:16px; top:8px; width:auto; height:40px; z-index:60;}
  .nav-search.is-open input{opacity:1;}
  .hero-actions .btn{flex:1 1 100%;}
  .trust-row{gap:14px; flex-direction:column;}
  .section-head{flex-direction:column; align-items:flex-start; gap:12px; margin-bottom:28px;}
  .quick-strip{grid-template-columns:1fr;}
  .matrix-hint{display:block;}
  .tier-ladder{flex-direction:column;}
  .tier-card{flex:1 1 auto; width:100%;}
  .vault-grid{gap:16px;}
  .vault-wide,.vault-tall,.vault-third{grid-column:span 12;}
  .news-list{grid-template-columns:1fr;}
  .news-feature{grid-column:span 1; flex-direction:column;}
  .faq-accordion summary{font-size:16px; padding:18px 2px;}
  .cta-band{padding:52px 0;}
  .cta-actions .btn{flex:1 1 100%;}
  .footer-grid{grid-template-columns:1fr; gap:28px;}
  .footer-bottom{flex-direction:column; align-items:flex-start;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important; animation:none !important;}
  .btn:hover,.quick-card:hover,.tier-card:hover,.vault-card:hover,.news-card:hover{transform:none;}
}

/* roulang page: article */
:root{
  --ink-900:#0B1F1B;
  --primary-700:#0E4C3F;
  --primary-600:#14614F;
  --primary-100:#E4EFEA;
  --accent-500:#E4762A;
  --accent-100:#FBEBDD;
  --sand-50:#F7F5EF;
  --paper:#FFFFFF;
  --line:#E3DED2;
  --line-strong:#CFC8B8;
  --text-900:#16211E;
  --text-600:#5A6663;
  --text-400:#8C968F;
  --placeholder:#EDEAE1;
  --ok:#1E7A5A;
  --warn:#C98A00;
  --danger:#B03A2E;
  --radius-lg:16px;
  --radius-md:12px;
  --radius-pill:999px;
  --shadow-base:0 1px 2px rgba(11,31,27,.05), 0 10px 30px -18px rgba(11,31,27,.25);
  --shadow-hover:0 2px 6px rgba(11,31,27,.08), 0 16px 40px -20px rgba(11,31,27,.32);
  --space-1:4px; --space-2:8px; --space-3:12px; --space-4:16px;
  --space-5:24px; --space-6:32px; --space-7:48px; --space-8:64px; --space-9:96px;
  --font-sans:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-num:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--sand-50);
  color:var(--text-900);
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em;line-height:1.3;color:var(--text-900);}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
img{max-width:100%;display:block;background:var(--placeholder);}
a{color:inherit;text-decoration:none;transition:color 180ms ease-out,border-color 180ms ease-out;}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;}
:focus-visible{outline:2px solid var(--accent-500);outline-offset:2px;}
::selection{background:var(--primary-100);}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.num{font-variant-numeric:tabular-nums;font-family:var(--font-num);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--radius-md);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:background 180ms ease-out,color 180ms ease-out,border-color 180ms ease-out,transform 180ms ease-out,box-shadow 180ms ease-out;
  white-space:nowrap;
}
.btn-primary{background:var(--primary-700);color:#fff;box-shadow:var(--shadow-base);}
.btn-primary:hover{background:var(--primary-600);transform:translateY(-1px);box-shadow:var(--shadow-hover);}
.btn-primary:active{transform:translateY(1px);box-shadow:none;}
.btn-ghost{background:transparent;color:var(--text-900);border-color:var(--line-strong);}
.btn-ghost:hover{border-color:var(--primary-600);color:var(--primary-700);transform:translateY(-1px);}
.btn-soft{background:var(--primary-100);color:var(--primary-700);}
.btn-soft:hover{background:#d6e7e0;}
.btn-accent{background:var(--accent-500);color:var(--text-900);}
.btn-accent:hover{background:#d76a1f;transform:translateY(-1px);box-shadow:var(--shadow-hover);}
.btn-sm{height:40px;padding:0 16px;font-size:14px;border-radius:var(--radius-md);}
.btn-xs{height:34px;padding:0 14px;font-size:13px;border-radius:10px;}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}

/* ---------- 通用小组件 ---------- */
.badge{
  display:inline-flex;align-items:center;height:22px;padding:0 10px;
  border-radius:var(--radius-pill);font-size:12px;font-weight:600;letter-spacing:.02em;
}
.badge-primary{background:var(--primary-100);color:var(--primary-700);}
.badge-accent{background:var(--accent-100);color:#8a4413;}
.section{padding:88px 0;}
.section-head{margin-bottom:40px;max-width:780px;}
.section-head .eyebrow{
  display:inline-block;font-size:13px;font-weight:600;letter-spacing:.08em;
  color:var(--primary-600);margin-bottom:12px;
}
.section-head h2{font-size:clamp(24px,2.6vw,34px);margin-bottom:14px;}
.section-head p{color:var(--text-600);font-size:16px;}

/* ---------- 站点头部 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:var(--sand-50);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:64px;}
.header-left{display:flex;align-items:center;gap:32px;min-width:0;}
.header-right{display:flex;align-items:center;gap:16px;}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{width:32px;height:32px;color:var(--primary-700);flex-shrink:0;}
.logo-text{display:flex;flex-direction:column;line-height:1.1;}
.logo-text strong{font-size:16px;font-weight:700;color:var(--text-900);letter-spacing:-.01em;}
.logo-text em{font-style:normal;font-size:11px;color:var(--text-400);letter-spacing:.14em;}
.main-nav{display:flex;align-items:center;gap:22px;}
.main-nav a{
  position:relative;font-size:15px;color:var(--text-600);padding:6px 0;white-space:nowrap;
}
.main-nav a:hover{color:var(--text-900);}
.main-nav a:hover::after{
  content:"";position:absolute;left:0;right:0;bottom:-6px;height:2px;background:var(--accent-500);border-radius:2px;
}
.main-nav a.is-active{color:var(--primary-700);font-weight:600;}
.main-nav a.is-active::before{
  content:"";position:absolute;left:-10px;top:13px;width:5px;height:5px;border-radius:50%;background:var(--accent-500);
}
.nav-search{
  display:flex;align-items:center;height:38px;border:1px solid var(--line);
  border-radius:var(--radius-md);background:var(--paper);overflow:hidden;
  transition:border-color 180ms ease-out,box-shadow 180ms ease-out;
}
.nav-search:focus-within{border-color:var(--primary-600);box-shadow:0 0 0 3px rgba(20,97,79,.12);}
.nav-search button{
  width:38px;height:36px;border:0;background:transparent;color:var(--text-600);
  display:grid;place-items:center;flex-shrink:0;
}
.nav-search button:hover{color:var(--primary-700);}
.nav-search input{
  width:0;padding:0;border:0;background:transparent;font-size:14px;outline:none;
  transition:width 220ms ease-out,padding 220ms ease-out;
}
.nav-search.is-open input{width:196px;padding:0 12px 0 0;}
.nav-search input::placeholder{color:var(--text-400);}
.nav-toggle{
  display:none;width:40px;height:38px;border:1px solid var(--line);border-radius:var(--radius-md);
  background:var(--paper);color:var(--text-900);place-items:center;
}

/* ---------- 面包屑 ---------- */
.crumb-bar{padding:24px 0 0;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-400);}
.crumb a{color:var(--text-600);}
.crumb a:hover{color:var(--accent-500);text-decoration:underline;text-underline-offset:3px;}
.crumb .sep{color:var(--line-strong);}
.crumb .current{color:var(--text-900);}

/* ---------- 文章页头 ---------- */
.article-hero{padding:28px 0 32px;border-bottom:1px solid var(--line);}
.article-hero .chip{
  display:inline-flex;align-items:center;gap:8px;height:28px;padding:0 12px;border-radius:var(--radius-pill);
  background:var(--accent-100);color:#8a4413;font-size:13px;font-weight:600;margin-bottom:18px;
}
.article-hero h1{
  font-size:clamp(30px,4.2vw,40px);line-height:1.28;max-width:900px;margin-bottom:20px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;font-size:13px;color:var(--text-400);
  font-variant-numeric:tabular-nums;
}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--line-strong);}
.article-meta a{color:var(--primary-700);font-weight:600;}
.article-meta a:hover{color:var(--accent-500);}
.meta-share{margin-left:auto;display:flex;align-items:center;gap:10px;}
.share-btn{
  display:inline-flex;align-items:center;gap:6px;height:34px;padding:0 14px;font-size:13px;
  border:1px solid var(--line-strong);border-radius:var(--radius-md);background:transparent;color:var(--text-600);
}
.share-btn:hover{border-color:var(--primary-600);color:var(--primary-700);}

/* ---------- 文章布局 ---------- */
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:56px;
  padding:48px 0 88px;align-items:start;
}
.article-main{max-width:780px;}
.article-body{font-size:17px;line-height:1.9;color:var(--text-900);}
.article-body > * + *{margin-top:18px;}
.article-body h2{
  font-size:26px;line-height:1.35;margin-top:40px;margin-bottom:16px;
  padding-left:14px;border-left:3px solid var(--accent-500);
}
.article-body h3{font-size:20px;margin-top:32px;margin-bottom:12px;}
.article-body h4{font-size:17px;margin-top:24px;margin-bottom:10px;}
.article-body p{color:var(--text-900);}
.article-body a{color:var(--primary-700);border-bottom:1px solid rgba(14,76,63,.28);}
.article-body a:hover{color:var(--accent-500);border-bottom-color:var(--accent-500);}
.article-body ul,.article-body ol{padding-left:22px;}
.article-body ul{list-style:disc;}
.article-body ol{list-style:decimal;}
.article-body li{margin:8px 0;color:var(--text-900);}
.article-body li::marker{color:var(--primary-600);}
.article-body blockquote{
  margin:24px 0;padding:16px 20px;background:var(--sand-50);
  border-left:3px solid var(--accent-500);border-radius:0 var(--radius-md) var(--radius-md) 0;color:var(--text-600);
}
.article-body blockquote p{color:var(--text-600);}
.article-body img{border-radius:var(--radius-md);border:1px solid var(--line);margin:24px 0;}
.article-body figure{margin:24px 0;}
.article-body figcaption{font-size:13px;color:var(--text-400);margin-top:10px;text-align:center;}
.article-body .table-wrap{overflow-x:auto;margin:24px 0;border:1px solid var(--line);border-radius:var(--radius-md);background:var(--paper);}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;min-width:520px;}
.article-body thead th{
  text-align:left;font-size:13px;letter-spacing:.06em;color:var(--text-600);font-weight:600;
  padding:12px 16px;background:var(--primary-100);border-bottom:1px solid var(--line);white-space:nowrap;
}
.article-body tbody td{padding:12px 16px;border-bottom:1px solid var(--line);color:var(--text-600);}
.article-body tbody tr:last-child td{border-bottom:0;}
.article-body tbody tr:hover{background:var(--primary-100);}
.article-body hr{border:0;border-top:1px solid var(--line);margin:32px 0;}
.article-body code{
  font-family:var(--font-num);font-size:14px;background:var(--primary-100);
  padding:2px 6px;border-radius:6px;color:var(--primary-700);
}
.article-body pre{
  background:var(--ink-900);color:#e9efe9;padding:20px;border-radius:var(--radius-md);
  overflow-x:auto;font-size:14px;line-height:1.7;
}

/* ---------- 空态 ---------- */
.empty-state{
  min-height:240px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:14px;text-align:center;border:1px dashed var(--line-strong);border-radius:var(--radius-lg);
  background:var(--paper);padding:48px 24px;
}
.empty-state svg{color:var(--text-400);}
.empty-state h2{font-size:20px;}
.empty-state p{color:var(--text-600);font-size:15px;}

/* ---------- 侧栏 ---------- */
.article-aside{position:sticky;top:88px;display:flex;flex-direction:column;gap:20px;}
.toc-card,.aside-card{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:24px;box-shadow:var(--shadow-base);
}
.toc-title{font-size:14px;letter-spacing:.06em;color:var(--text-600);margin-bottom:14px;}
.toc-nav{display:flex;flex-direction:column;gap:2px;}
.toc-nav a{
  display:block;font-size:14px;line-height:1.6;color:var(--text-600);
  padding:7px 10px;border-radius:8px;border-left:2px solid transparent;
}
.toc-nav a.sub{padding-left:22px;font-size:13px;}
.toc-nav a:hover{background:var(--sand-50);color:var(--text-900);}
.toc-nav a.is-current{color:var(--accent-500);border-left-color:var(--accent-500);background:var(--accent-100);font-weight:600;}
.toc-empty{font-size:13px;color:var(--text-400);line-height:1.7;}
.aside-card h3{font-size:15px;margin-bottom:12px;}
.aside-card ul{display:flex;flex-direction:column;gap:8px;}
.aside-card li a{
  display:flex;align-items:center;justify-content:space-between;gap:8px;
  font-size:14px;color:var(--text-600);padding:8px 0;border-bottom:1px dashed var(--line);
}
.aside-card li:last-child a{border-bottom:0;}
.aside-card li a:hover{color:var(--primary-700);}
.aside-card li a span{color:var(--accent-500);font-size:13px;}

/* ---------- 标签与返回 ---------- */
.article-foot{margin-top:48px;padding-top:24px;border-top:1px solid var(--line);}
.tag-list{display:flex;flex-wrap:wrap;align-items:center;gap:10px;}
.tag-label{font-size:13px;color:var(--text-400);}
.tag{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:var(--radius-pill);
  background:var(--primary-100);color:var(--primary-700);font-size:13px;font-weight:600;
  border:1px solid transparent;
}
.tag:hover{border-color:var(--accent-500);color:#8a4413;background:var(--accent-100);}
.back-link{
  display:inline-flex;align-items:center;gap:8px;margin-top:20px;font-size:14px;font-weight:600;color:var(--primary-700);
}
.back-link:hover{color:var(--accent-500);}

/* ---------- 相关推荐 ---------- */
.related{padding:0 0 88px;}
.related-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:24px;}
.rel-card{
  display:flex;flex-direction:column;background:var(--paper);border:1px solid var(--line);
  border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-base);
  transition:transform 180ms ease-out,box-shadow 180ms ease-out,border-color 180ms ease-out;
}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:var(--primary-600);}
.rel-card:hover h3{color:var(--primary-700);}
.rel-cover{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--placeholder);}
.rel-cover img{width:100%;height:100%;object-fit:cover;}
.rel-cover .badge{position:absolute;left:12px;top:12px;background:rgba(255,255,255,.92);color:var(--primary-700);}
.rel-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.rel-body h3{font-size:18px;line-height:1.45;transition:color 180ms ease-out;}
.rel-body p{font-size:14px;color:var(--text-600);line-height:1.75;}
.rel-body .rel-meta{margin-top:auto;font-size:13px;color:var(--text-400);}
.rel-card.large .rel-body{padding:28px;}
.rel-card.large .rel-body h3{font-size:22px;}

/* ---------- CTA 带 ---------- */
.cta-band{
  background:var(--ink-900);color:#fff;position:relative;overflow:hidden;
  padding:80px 0;border-radius:0;
}
.cta-band::after{
  content:"";position:absolute;left:50%;top:-40%;width:1200px;height:700px;
  transform:translateX(-30%);border:1px solid rgba(255,255,255,.08);border-radius:50%;
  pointer-events:none;
}
.cta-inner{position:relative;display:grid;grid-template-columns:1.2fr .8fr;gap:48px;align-items:center;}
.cta-inner h2{color:#fff;font-size:clamp(24px,2.6vw,34px);margin-bottom:18px;}
.cta-list{display:flex;flex-direction:column;gap:10px;}
.cta-list li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:rgba(255,255,255,.78);line-height:1.7;}
.cta-list li svg{flex-shrink:0;margin-top:5px;color:var(--accent-500);}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end;}
.cta-band .btn-ghost{color:#fff;border-color:rgba(255,255,255,.4);}
.cta-band .btn-ghost:hover{color:var(--accent-500);border-color:var(--accent-500);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.72);padding:72px 0 28px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;}
.footer-brand .logo{margin-bottom:18px;}
.footer-brand .logo-mark{color:var(--accent-500);}
.footer-brand .logo-text strong{color:#fff;font-size:16px;}
.footer-brand .logo-text em{color:rgba(255,255,255,.45);}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);max-width:340px;}
.footer-col h4{font-size:14px;color:#fff;margin-bottom:16px;letter-spacing:.04em;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.68);}
.footer-col a:hover{color:var(--accent-500);border-bottom:1px solid var(--accent-500);}
.footer-bottom{
  margin-top:48px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;font-size:13px;color:rgba(255,255,255,.5);
}
.footer-bottom a{color:rgba(255,255,255,.68);}
.footer-bottom a:hover{color:var(--accent-500);}

/* ---------- 响应式 ---------- */
@media (max-width:1180px){
  .main-nav{gap:16px;}
  .header-left{gap:20px;}
  .nav-search.is-open input{width:140px;}
}
@media (max-width:1023px){
  .section{padding:64px 0;}
  .article-layout{grid-template-columns:1fr;gap:40px;padding:40px 0 64px;}
  .article-main{max-width:100%;}
  .article-aside{position:static;flex-direction:row;flex-wrap:wrap;}
  .toc-card,.aside-card{flex:1 1 300px;}
  .related-grid{grid-template-columns:1fr 1fr;}
  .rel-card.large{grid-column:1 / -1;}
  .cta-inner{grid-template-columns:1fr;gap:28px;}
  .cta-actions{justify-content:flex-start;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .footer-brand{grid-column:1 / -1;}
}
@media (max-width:900px){
  .main-nav{
    position:absolute;left:0;right:0;top:100%;
    flex-direction:column;align-items:stretch;gap:0;
    background:var(--sand-50);border-bottom:1px solid var(--line);
    padding:8px 24px 16px;display:none;box-shadow:var(--shadow-base);
  }
  .main-nav.is-open{display:flex;}
  .main-nav a{padding:12px 0;font-size:15px;border-bottom:1px solid var(--line);}
  .main-nav a:last-child{border-bottom:0;}
  .main-nav a.is-active::before{top:20px;}
  .main-nav a:hover::after{display:none;}
  .nav-toggle{display:grid;}
  .header-right .btn-primary{display:none;}
  .nav-search{flex:1 1 auto;max-width:220px;}
  .nav-search.is-open{max-width:100%;}
  .nav-search.is-open input{width:100%;}
}
@media (max-width:767px){
  body{font-size:16px;line-height:1.8;}
  .container{padding:0 20px;}
  .section{padding:48px 0;}
  .header-inner{height:56px;gap:12px;}
  .logo-text strong{font-size:15px;}
  .logo-mark{width:28px;height:28px;}
  .article-hero{padding:20px 0 24px;}
  .article-hero h1{font-size:clamp(26px,7vw,32px);}
  .meta-share{margin-left:0;width:100%;}
  .article-body h2{font-size:22px;margin-top:32px;}
  .article-body h3{font-size:18px;}
  .related-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .site-footer{padding:56px 0 24px;}
  .aside-card ul{flex-direction:column;}
}
@media (max-width:559px){
  .header-right{gap:8px;}
  .nav-search{max-width:150px;}
  .btn-sm{height:36px;padding:0 12px;font-size:13px;}
  .article-body{font-size:16px;}
  .section-head{margin-bottom:28px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category1 */
/* ============ 设计变量 ============ */
:root{
  --ink-900:#0B1F1B;
  --primary-700:#0E4C3F;
  --primary-600:#14614F;
  --primary-100:#E4EFEA;
  --accent-500:#E4762A;
  --accent-100:#FBEBDD;
  --sand-50:#F7F5EF;
  --paper:#FFFFFF;
  --line:#E3DED2;
  --line-strong:#CFC8B8;
  --text-900:#16211E;
  --text-600:#5A6663;
  --text-400:#8C968F;
  --ok:#1E7A5A;
  --warn:#C98A00;
  --danger:#B03A2E;
  --r-lg:16px;
  --r-md:12px;
  --r-sm:8px;
  --r-pill:999px;
  --shadow-sm:0 1px 2px rgba(11,31,27,.05), 0 10px 30px -18px rgba(11,31,27,.25);
  --shadow-md:0 2px 4px rgba(11,31,27,.06), 0 20px 44px -22px rgba(11,31,27,.34);
  --gap:24px;
  --header-h:64px;
}

/* ============ Reset / Base ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--sand-50);
  color:var(--text-900);
  font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:17px;
  line-height:1.85;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-md)}
a{color:var(--primary-700);text-decoration:none;transition:color 180ms ease-out}
a:hover{color:var(--accent-500)}
button,input{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:0}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em;color:var(--text-900)}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
svg{display:block}
:focus-visible{outline:2px solid var(--accent-500);outline-offset:2px;border-radius:4px}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:80px 0}
.section-tight{padding:48px 0}

/* ============ 通用标题区 ============ */
.section-head{max-width:760px;margin-bottom:32px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.14em;color:var(--primary-600);
  text-transform:none;margin-bottom:12px;font-weight:600;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--accent-500);border-radius:2px}
.section-head h2{font-size:clamp(24px,2.6vw,34px);line-height:1.3;margin-bottom:12px}
.section-head p{color:var(--text-600);font-size:16px;line-height:1.8;max-width:700px}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--r-md);
  font-size:16px;font-weight:600;line-height:1;white-space:nowrap;
  border:1px solid transparent;cursor:pointer;
  transition:background-color 180ms ease-out,color 180ms ease-out,border-color 180ms ease-out,transform 180ms ease-out,box-shadow 180ms ease-out;
}
.btn svg{flex:none}
.btn-primary{background:var(--primary-700);color:#fff;box-shadow:var(--shadow-sm)}
.btn-primary:hover{background:var(--primary-600);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-md)}
.btn-primary:active{transform:translateY(1px);box-shadow:none}
.btn-outline{background:transparent;border-color:var(--line-strong);color:var(--text-900)}
.btn-outline:hover{border-color:var(--primary-600);color:var(--primary-700);transform:translateY(-1px)}
.btn-outline:active{transform:translateY(1px)}
.btn-soft{background:var(--primary-100);color:var(--primary-700)}
.btn-soft:hover{background:#d6e7e0;color:var(--primary-700);transform:translateY(-1px)}
.btn-accent{background:var(--accent-500);color:#16211E}
.btn-accent:hover{background:#f0833a;color:#16211E;transform:translateY(-1px)}
.btn-ghost-light{background:transparent;border-color:rgba(255,255,255,.42);color:#fff}
.btn-ghost-light:hover{border-color:#fff;background:rgba(255,255,255,.08);color:#fff;transform:translateY(-1px)}
.btn-sm{height:40px;padding:0 18px;font-size:15px}
.btn-xs{height:34px;padding:0 14px;font-size:14px;border-radius:10px}
.btn[disabled]{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;height:22px;padding:0 10px;
  border-radius:var(--r-pill);font-size:12px;font-weight:600;line-height:1;
  background:var(--primary-100);color:var(--primary-700);
}
.badge-accent{background:var(--accent-100);color:#A9530F}
.badge-dim{background:#EEEAE0;color:var(--text-600)}
.tag-row{display:flex;flex-wrap:wrap;gap:8px}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:var(--sand-50);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  height:var(--header-h);
}
.header-left{display:flex;align-items:center;gap:32px;min-width:0}
.header-right{display:flex;align-items:center;gap:16px;flex:none}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--text-900);flex:none}
.logo:hover{color:var(--text-900)}
.logo-mark{width:34px;height:34px;color:var(--primary-700);flex:none}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-text strong{font-size:16px;font-weight:700}
.logo-text em{font-size:11px;font-style:normal;color:var(--text-600);letter-spacing:.16em}
.main-nav{display:flex;align-items:center;gap:26px;min-width:0}
.main-nav a{
  position:relative;font-size:15px;color:var(--text-600);
  padding:6px 0;white-space:nowrap;font-weight:500;
}
.main-nav a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--accent-500);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform 180ms ease-out;
}
.main-nav a:hover{color:var(--text-900)}
.main-nav a:hover::after{transform:scaleX(1)}
.main-nav a.is-active{color:var(--primary-700);font-weight:600}
.main-nav a.is-active::before{
  content:"";position:absolute;left:-10px;top:50%;width:4px;height:4px;margin-top:-2px;
  border-radius:50%;background:var(--accent-500);
}
.main-nav a.is-active::after{transform:scaleX(0)}
.nav-search{position:relative;display:flex;align-items:center}
.nav-search button{
  width:38px;height:38px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:var(--r-md);color:var(--text-600);border:1px solid transparent;
  transition:background-color 180ms ease-out,color 180ms ease-out,border-color 180ms ease-out;
}
.nav-search button:hover{background:var(--paper);border-color:var(--line);color:var(--primary-700)}
.nav-search input{
  width:0;height:38px;opacity:0;padding:0;border:1px solid transparent;
  border-radius:var(--r-md);background:var(--paper);font-size:14px;
  transition:width 200ms ease-out,opacity 180ms ease-out;
}
.nav-search.is-open input{width:320px;opacity:1;padding:0 12px;border-color:var(--line)}
.nav-search.is-open input:focus{outline:none;border-color:var(--primary-600);box-shadow:0 0 0 3px var(--primary-100)}
.nav-toggle{
  display:none;width:38px;height:38px;align-items:center;justify-content:center;
  border-radius:var(--r-md);border:1px solid var(--line);color:var(--text-900);background:var(--paper);
}

/* ============ 页头 ============ */
.page-head{padding:40px 0 8px}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-400);margin-bottom:16px;flex-wrap:wrap}
.breadcrumb a{color:var(--text-600)}
.breadcrumb a:hover{color:var(--accent-500)}
.breadcrumb span.sep{color:var(--line-strong)}
.breadcrumb .current{color:var(--text-600)}
.page-head h1{
  font-size:clamp(30px,4.2vw,46px);line-height:1.22;margin-bottom:14px;max-width:16em;
}
.page-lead{font-size:17px;color:var(--text-600);max-width:640px;line-height:1.8}
.page-banner{padding:28px 0 0}
.banner-media{position:relative;height:240px;border-radius:var(--r-lg);overflow:hidden;background:#EDEAE1}
.banner-media img{width:100%;height:100%;object-fit:cover;border-radius:0}
.banner-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(11,31,27,.72) 0%,rgba(11,31,27,.30) 46%,rgba(11,31,27,.08) 100%);
}
.banner-caption{position:absolute;left:32px;bottom:28px;z-index:2;color:#fff;max-width:520px}
.banner-caption strong{display:block;font-size:20px;font-weight:700;margin-bottom:6px}
.banner-caption span{font-size:14px;color:rgba(255,255,255,.86);line-height:1.7}

/* ============ 说明带 ============ */
.notice-band{margin-top:28px}
.notice-inner{
  display:flex;align-items:flex-start;gap:18px;flex-wrap:wrap;
  background:var(--primary-100);border:1px solid #D2E3DC;border-radius:var(--r-lg);
  padding:20px 24px;
}
.notice-icon{
  width:36px;height:36px;flex:none;border-radius:10px;background:var(--paper);
  display:inline-flex;align-items:center;justify-content:center;color:var(--primary-700);
  border:1px solid #D2E3DC;
}
.notice-text{flex:1 1 320px;min-width:0}
.notice-text strong{display:block;font-size:16px;margin-bottom:4px}
.notice-text p{font-size:14px;color:var(--text-600);line-height:1.75}

/* ============ 主布局 8/4 ============ */
.layout-8-4{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:48px;align-items:start}

/* ============ 正文排版 ============ */
.prose{max-width:780px}
.prose section{scroll-margin-top:96px;padding-bottom:8px}
.prose section + section{margin-top:48px;padding-top:40px;border-top:1px solid var(--line)}
.prose h2{font-size:clamp(22px,2.2vw,26px);line-height:1.4;margin-bottom:16px;display:flex;align-items:baseline;gap:12px}
.prose h2 .h-index{
  font-size:13px;font-weight:700;color:var(--accent-500);letter-spacing:.08em;
  font-variant-numeric:tabular-nums;flex:none;
}
.prose h3{font-size:19px;margin:28px 0 10px;line-height:1.45}
.prose p{font-size:17px;line-height:1.85;color:var(--text-600);margin-bottom:18px}
.prose p:last-child{margin-bottom:0}
.prose strong{color:var(--text-900);font-weight:600}
.lead-para{font-size:18px;color:var(--text-900)!important}

/* 要点清单 */
.check-list{margin:22px 0;display:grid;gap:12px}
.check-list li{
  position:relative;padding:16px 18px 16px 46px;
  background:var(--paper);border:1px solid var(--line);border-radius:var(--r-md);
  font-size:15px;line-height:1.75;color:var(--text-600);
  transition:border-color 180ms ease-out,box-shadow 180ms ease-out,transform 180ms ease-out;
}
.check-list li:hover{border-color:var(--primary-600);box-shadow:var(--shadow-sm);transform:translateY(-2px)}
.check-list li::before{
  content:"";position:absolute;left:18px;top:20px;width:14px;height:14px;
  border-radius:50%;border:2px solid var(--primary-600);
  background:
    linear-gradient(var(--primary-600),var(--primary-600)) 3px 6px/7px 2px no-repeat,
    linear-gradient(var(--primary-600),var(--primary-600)) 5px 8px/2px 5px no-repeat;
  transform:rotate(-45deg);box-sizing:border-box;
}
.check-list li strong{display:block;color:var(--text-900);font-size:15px;margin-bottom:2px}

/* 图文混排 */
.inline-media{margin:26px 0}
.inline-media img{width:100%;height:260px;object-fit:cover;border:1px solid var(--line)}
.inline-media figcaption{font-size:13px;color:var(--text-400);margin-top:10px;line-height:1.6}

/* 数据行 */
.stat-strip{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1px;
  background:var(--line);border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;
  margin:24px 0;
}
.stat-strip div{background:var(--paper);padding:16px 18px}
.stat-strip strong{display:block;font-size:24px;color:var(--primary-700);font-variant-numeric:tabular-nums;line-height:1.3}
.stat-strip span{font-size:13px;color:var(--text-600)}

/* 引用块 */
.quote-block{
  border-left:3px solid var(--accent-500);background:#FBF8F1;
  border-radius:0 var(--r-sm) var(--r-sm) 0;
  padding:16px 20px;margin:24px 0;font-size:15px;color:var(--text-600);line-height:1.8;
}

/* ============ 锚点目录 ============ */
.toc-col{position:sticky;top:88px;display:grid;gap:16px}
.toc{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:20px;box-shadow:var(--shadow-sm);
}
.toc h3{font-size:13px;letter-spacing:.1em;color:var(--text-400);font-weight:600;margin-bottom:14px}
.toc ol{counter-reset:toc;display:grid;gap:2px}
.toc a{
  position:relative;display:block;padding:9px 10px 9px 30px;border-radius:var(--r-sm);
  font-size:14px;color:var(--text-600);line-height:1.5;
  transition:background-color 180ms ease-out,color 180ms ease-out;
}
.toc a .toc-num{
  position:absolute;left:10px;top:9px;font-size:12px;color:var(--text-400);
  font-variant-numeric:tabular-nums;
}
.toc a:hover{background:var(--primary-100);color:var(--primary-700)}
.toc a.is-current{background:var(--primary-100);color:var(--primary-700);font-weight:600}
.toc a.is-current .toc-num{color:var(--accent-500)}
.toc a.is-current::after{
  content:"";position:absolute;right:10px;top:50%;width:6px;height:6px;margin-top:-3px;
  border-radius:50%;background:var(--accent-500);
}
.toc-card{
  background:var(--ink-900);color:#fff;border-radius:var(--r-lg);padding:20px;
  border:1px solid rgba(255,255,255,.10);
}
.toc-card .badge{background:rgba(255,255,255,.12);color:#C8E3D9}
.toc-card strong{display:block;font-size:16px;margin:12px 0 8px;color:#fff}
.toc-card p{font-size:13px;line-height:1.7;color:rgba(255,255,255,.72);margin-bottom:14px}
.toc-card .btn{width:100%}

/* ============ FAQ ============ */
.qa-list{max-width:840px;border-top:1px solid var(--line)}
.qa-item{border-bottom:1px solid var(--line)}
.qa-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:flex-start;justify-content:space-between;
  gap:20px;padding:20px 0;font-size:17px;font-weight:600;color:var(--text-900);line-height:1.6;
  transition:color 180ms ease-out;
}
.qa-item summary::-webkit-details-marker{display:none}
.qa-item summary:hover{color:var(--primary-700)}
.qa-item summary .chev{
  flex:none;width:22px;height:22px;margin-top:3px;color:var(--text-400);
  transition:transform 180ms ease-out,color 180ms ease-out;
}
.qa-item[open] summary{color:var(--primary-700)}
.qa-item[open] summary .chev{transform:rotate(180deg);color:var(--accent-500)}
.qa-body{padding:0 0 20px;font-size:15px;line-height:1.85;color:var(--text-600);max-width:760px}

/* ============ CTA 带 ============ */
.cta-band{
  background:var(--ink-900);color:#fff;border-radius:var(--r-lg);
  padding:48px;position:relative;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;right:-140px;top:-120px;width:420px;height:420px;
  border-radius:50%;border:1px solid rgba(255,255,255,.08);
}
.cta-band::after{
  content:"";position:absolute;right:-220px;bottom:-240px;width:560px;height:560px;
  border-radius:50%;border:1px solid rgba(255,255,255,.06);
}
.cta-grid{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:40px;align-items:center}
.cta-band h2{color:#fff;font-size:clamp(24px,2.6vw,32px);line-height:1.3;margin-bottom:16px}
.cta-points{display:grid;gap:10px}
.cta-points li{display:flex;align-items:flex-start;gap:10px;font-size:15px;color:rgba(255,255,255,.82);line-height:1.7}
.cta-points li svg{flex:none;margin-top:5px;color:var(--accent-500)}
.cta-actions{display:flex;flex-direction:column;gap:12px;min-width:210px}
.cta-note{font-size:13px;color:rgba(255,255,255,.6);text-align:center}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.72);margin-top:80px;padding:64px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.site-footer .logo{color:#fff;margin-bottom:16px}
.site-footer .logo:hover{color:#fff}
.site-footer .logo-mark{color:#8FC7B4}
.site-footer .logo-text em{color:rgba(255,255,255,.55)}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);max-width:360px}
.footer-col h4{font-size:14px;color:#fff;letter-spacing:.06em;margin-bottom:16px;font-weight:600}
.footer-col ul{display:grid;gap:10px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.66);border-bottom:1px solid transparent}
.footer-col a:hover{color:var(--accent-500);border-bottom-color:var(--accent-500)}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.5);
}
.footer-bottom a{color:rgba(255,255,255,.66)}
.footer-bottom a:hover{color:var(--accent-500)}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .layout-8-4{grid-template-columns:minmax(0,1fr) 280px;gap:36px}
}
@media (max-width:1023px){
  .main-nav{
    position:absolute;left:0;right:0;top:var(--header-h);
    flex-direction:column;align-items:stretch;gap:0;
    background:var(--sand-50);border-bottom:1px solid var(--line);
    padding:6px 24px 18px;box-shadow:var(--shadow-sm);display:none;
  }
  .main-nav.is-open{display:flex}
  .main-nav a{padding:14px 0;border-bottom:1px solid var(--line);font-size:16px}
  .main-nav a.is-active::before{left:0;top:22px}
  .main-nav a.is-active::after,.main-nav a::after{display:none}
  .nav-toggle{display:inline-flex}
  .layout-8-4{grid-template-columns:minmax(0,1fr);gap:32px}
  .toc-col{position:static;order:2}
  .toc ol{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .footer-brand{grid-column:1 / -1}
  .cta-grid{grid-template-columns:minmax(0,1fr);gap:28px}
  .cta-actions{flex-direction:row;flex-wrap:wrap;min-width:0}
  .cta-actions .btn{flex:1 1 180px}
}
@media (max-width:767px){
  body{font-size:16px;line-height:1.8}
  .container{padding:0 20px}
  .section{padding:48px 0}
  .section-tight{padding:32px 0}
  :root{--header-h:56px}
  .header-left{gap:16px}
  .logo-text strong{font-size:15px}
  .logo-text em{font-size:10px;letter-spacing:.1em}
  .logo-mark{width:30px;height:30px}
  .nav-search input{position:absolute;left:-8px;right:-8px;width:auto}
  .nav-search.is-open input{width:auto;left:-8px;right:-8px}
  .header-right{gap:10px}
  .header-right .btn-sm{display:none}
  .page-head{padding:24px 0 4px}
  .page-head h1{font-size:clamp(26px,7vw,32px)}
  .banner-media{height:200px;border-radius:var(--r-md)}
  .banner-caption{left:20px;right:20px;bottom:18px}
  .banner-caption strong{font-size:17px}
  .banner-caption span{font-size:13px}
  .notice-inner{padding:18px;gap:14px}
  .prose p{font-size:16px;line-height:1.8}
  .inline-media img{height:200px}
  .stat-strip{grid-template-columns:1fr}
  .toc ol{grid-template-columns:1fr}
  .cta-band{padding:28px 22px;border-radius:var(--r-md)}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
}
@media (max-width:559px){
  .logo-text em{display:none}
  .page-head h1{font-size:26px}
  .prose section + section{margin-top:36px;padding-top:28px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
}

/* roulang page: category2 */
:root{
  --ink-900:#0B1F1B;
  --primary-700:#0E4C3F;
  --primary-600:#14614F;
  --primary-100:#E4EFEA;
  --accent-500:#E4762A;
  --accent-100:#FBEBDD;
  --sand-50:#F7F5EF;
  --paper:#FFFFFF;
  --line:#E3DED2;
  --line-strong:#CFC8B8;
  --text-900:#16211E;
  --text-600:#5A6663;
  --text-400:#8C968F;
  --ok:#1E7A5A;
  --warn:#C98A00;
  --danger:#B03A2E;
  --r-lg:16px;
  --r-md:12px;
  --r-pill:999px;
  --shadow-sm:0 1px 2px rgba(11,31,27,.05), 0 10px 30px -18px rgba(11,31,27,.25);
  --shadow-md:0 2px 4px rgba(11,31,27,.06), 0 20px 44px -22px rgba(11,31,27,.34);
  --s4:4px; --s8:8px; --s12:12px; --s16:16px; --s24:24px; --s32:32px; --s48:48px; --s64:64px; --s96:96px;
  --header-h:64px;
  --font:-apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --mono:ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:17px;
  line-height:1.85;
  color:var(--text-900);
  background:var(--sand-50);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-md);object-fit:cover;background:#EDEAE1;}
a{color:inherit;text-decoration:none;transition:color 180ms ease-out;}
a:hover{color:var(--primary-700);}
button,input{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-0.01em;color:var(--text-900);}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
table{border-collapse:collapse;width:100%;}
:focus-visible{outline:2px solid var(--accent-500);outline-offset:2px;border-radius:4px;}
.num{font-variant-numeric:tabular-nums;}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 var(--s24);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:var(--s8);
  height:48px;padding:0 22px;border-radius:var(--r-md);
  border:1px solid transparent;font-weight:600;font-size:16px;line-height:1;
  cursor:pointer;white-space:nowrap;
  transition:background-color 180ms ease-out, color 180ms ease-out, border-color 180ms ease-out, transform 180ms ease-out, box-shadow 180ms ease-out;
}
.btn-sm{height:40px;padding:0 18px;font-size:15px;}
.btn-xs{height:34px;padding:0 14px;font-size:14px;}
.btn-primary{background:var(--primary-700);color:#fff;box-shadow:var(--shadow-sm);}
.btn-primary:hover{background:var(--primary-600);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-md);}
.btn-primary:active{transform:translateY(1px);box-shadow:none;}
.btn-secondary{background:transparent;color:var(--text-900);border-color:var(--line-strong);}
.btn-secondary:hover{border-color:var(--primary-600);color:var(--primary-700);transform:translateY(-1px);}
.btn-secondary:active{transform:translateY(1px);}
.btn-soft{background:var(--primary-100);color:var(--primary-700);}
.btn-soft:hover{background:#D5E6DF;color:var(--primary-700);transform:translateY(-1px);}
.btn-accent{background:var(--accent-500);color:var(--text-900);}
.btn-accent:hover{background:#D66A1F;color:var(--text-900);transform:translateY(-1px);}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.45);}
.btn-outline-light:hover{border-color:#fff;color:#fff;background:rgba(255,255,255,.08);}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;height:22px;padding:0 10px;
  border-radius:var(--r-pill);font-size:12px;font-weight:600;line-height:1;
  background:var(--primary-100);color:var(--primary-700);
}
.badge-accent{background:var(--accent-100);color:#A9520F;}
.badge-dark{background:rgba(255,255,255,.14);color:#fff;}
.badge-ok{background:rgba(30,122,90,.12);color:var(--ok);}

/* ---------- 头部 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--sand-50);
  border-bottom:1px solid var(--line);
}
.header-inner{
  height:var(--header-h);
  display:flex;align-items:center;justify-content:space-between;gap:var(--s16);
}
.header-left{display:flex;align-items:center;gap:var(--s32);min-width:0;}
.header-right{display:flex;align-items:center;gap:var(--s12);}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--ink-900);}
.logo-mark{width:32px;height:32px;flex:0 0 auto;color:var(--primary-700);}
.logo-text{display:flex;flex-direction:column;line-height:1.15;}
.logo-text strong{font-size:16px;font-weight:700;letter-spacing:.01em;}
.logo-text em{font-style:normal;font-size:11px;color:var(--text-400);letter-spacing:.14em;}
.main-nav{display:flex;align-items:center;gap:var(--s24);}
.main-nav a{
  position:relative;font-size:15px;font-weight:500;color:var(--text-600);padding:6px 0;
}
.main-nav a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--accent-500);
  transform:scaleX(0);transform-origin:left;transition:transform 180ms ease-out;
}
.main-nav a:hover{color:var(--text-900);}
.main-nav a:hover::after{transform:scaleX(1);}
.main-nav a.is-active{color:var(--primary-700);font-weight:600;}
.main-nav a.is-active::before{
  content:"";position:absolute;left:-10px;top:50%;width:5px;height:5px;margin-top:-2.5px;
  border-radius:50%;background:var(--accent-500);
}
.main-nav a.is-active::after{transform:scaleX(0);}
.nav-search{display:flex;align-items:center;background:var(--paper);border:1px solid var(--line);border-radius:var(--r-pill);padding:2px;transition:border-color 180ms ease-out;}
.nav-search button{
  display:inline-flex;align-items:center;justify-content:center;
  width:32px;height:32px;border:0;background:transparent;color:var(--text-600);cursor:pointer;border-radius:50%;
}
.nav-search button:hover{color:var(--primary-700);}
.nav-search input{
  width:0;padding:0;border:0;background:transparent;height:32px;color:var(--text-900);
  transition:width 220ms ease-out, padding 220ms ease-out;outline:none;
}
.nav-search.is-open{border-color:var(--primary-600);}
.nav-search.is-open input{width:238px;padding:0 10px 0 2px;}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:40px;height:40px;border:1px solid var(--line-strong);border-radius:var(--r-md);
  background:var(--paper);color:var(--text-900);cursor:pointer;
}
.nav-toggle:hover{border-color:var(--primary-600);color:var(--primary-700);}

/* ---------- 页头 ---------- */
.page-head{padding:var(--s48) 0 var(--s32);}
.breadcrumb{display:flex;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--text-400);line-height:1.6;}
.breadcrumb a{color:var(--text-600);}
.breadcrumb a:hover{color:var(--primary-700);}
.breadcrumb .sep{color:var(--line-strong);}
.head-split{display:grid;grid-template-columns:7fr 5fr;gap:var(--s48);align-items:center;margin-top:var(--s16);}
.page-head h1{font-size:clamp(30px,4.2vw,48px);line-height:1.22;}
.head-sub{margin-top:var(--s16);font-size:17px;color:var(--text-600);max-width:640px;}
.head-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:var(--s24);}
.head-media{position:relative;height:250px;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);}
.head-media img{width:100%;height:100%;border-radius:0;}
.head-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(200deg, rgba(11,31,27,.05) 30%, rgba(11,31,27,.58) 100%);
}
.head-media .media-note{
  position:absolute;left:var(--s24);bottom:var(--s24);right:var(--s24);z-index:2;color:#fff;
}
.head-media .media-note strong{display:block;font-size:18px;font-weight:700;}
.head-media .media-note span{font-size:13px;color:rgba(255,255,255,.82);}

/* ---------- 板块通用 ---------- */
.section{padding:var(--s64) 0;}
.section-head{margin-bottom:var(--s32);max-width:760px;}
.section-head .eyebrow{
  display:inline-block;font-size:12px;font-weight:600;letter-spacing:.16em;
  color:var(--primary-600);margin-bottom:10px;
}
.section-head h2{font-size:clamp(24px,2.6vw,34px);line-height:1.3;}
.section-head p{margin-top:var(--s12);color:var(--text-600);}
.section-alt{background:var(--paper);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}

/* ---------- 档位切换标签 ---------- */
.tier-tabs{
  display:flex;flex-wrap:wrap;gap:var(--s8);
  padding:6px;background:var(--paper);border:1px solid var(--line);border-radius:var(--r-pill);
  width:fit-content;max-width:100%;
}
.tier-tab{
  display:inline-flex;align-items:center;gap:8px;
  height:40px;padding:0 20px;border:0;border-radius:var(--r-pill);cursor:pointer;
  background:transparent;color:var(--text-600);font-size:15px;font-weight:600;
  transition:background-color 180ms ease-out,color 180ms ease-out;
}
.tier-tab:hover{color:var(--primary-700);background:var(--primary-100);}
.tier-tab .dot{width:7px;height:7px;border-radius:50%;background:var(--line-strong);}
.tier-tab.is-active{background:var(--primary-700);color:#fff;}
.tier-tab.is-active .dot{background:var(--accent-500);}

/* ---------- 对照矩阵 ---------- */
.matrix-card{
  margin-top:var(--s24);background:var(--paper);border:1px solid var(--line);
  border-radius:var(--r-lg);box-shadow:var(--shadow-sm);overflow:hidden;
}
.matrix-hint{
  display:none;padding:10px var(--s16);font-size:13px;color:var(--text-600);
  background:var(--primary-100);border-bottom:1px solid var(--line);
}
.matrix-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;}
.matrix-table{min-width:860px;}
.matrix-table th,.matrix-table td{
  text-align:left;padding:0 var(--s16);height:40px;font-size:15px;
  border-bottom:1px solid var(--line);vertical-align:middle;white-space:nowrap;
}
.matrix-table thead th{
  height:56px;position:sticky;top:0;z-index:3;
  background:var(--paper);color:var(--text-600);
  font-size:13px;font-weight:600;letter-spacing:.06em;
  border-bottom:1px solid var(--line-strong);
}
.matrix-table thead th:first-child{color:var(--text-400);}
.matrix-table tbody tr:nth-child(even){background:#FBFAF6;}
.matrix-table tbody tr:hover{background:var(--primary-100);}
.matrix-table tbody tr:last-child td{border-bottom:0;}
.matrix-table .col-item{width:210px;color:var(--text-900);font-weight:600;}
.matrix-table td.col-item{background:inherit;}
.matrix-table th.is-recommend,.matrix-table td.col-recommend{
  background:#F2F8F5;border-left:1px solid rgba(228,118,42,.32);border-right:1px solid rgba(228,118,42,.32);
}
.matrix-table thead th.is-recommend{background:#EAF4EF;box-shadow:inset 0 2px 0 var(--accent-500);}
.matrix-table tr:hover td.col-recommend{background:#E4EFEA;}
.matrix-table .col-head{display:inline-flex;align-items:center;gap:8px;}
.matrix-table [data-tier-col].is-active{background:#E9F3EE;}
.matrix-table th[data-tier-col].is-active{box-shadow:inset 0 -2px 0 var(--accent-500);color:var(--primary-700);}
.cell-yes{display:inline-flex;color:var(--ok);}
.cell-no{display:inline-flex;color:var(--line-strong);}
.cell-text{color:var(--text-600);font-size:14px;}
.cell-text strong{color:var(--text-900);font-weight:600;}

/* ---------- 等级亮点卡 ---------- */
.tier-cards{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--s24);margin-top:var(--s32);}
.tier-card{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:var(--s24);display:flex;flex-direction:column;gap:var(--s16);
  transition:border-color 180ms ease-out, transform 180ms ease-out, box-shadow 180ms ease-out;
}
.tier-card:hover{border-color:var(--primary-600);transform:translateY(-2px);box-shadow:var(--shadow-sm);}
.tier-card.is-active{border-color:var(--accent-500);box-shadow:0 0 0 1px rgba(228,118,42,.35), var(--shadow-sm);}
.tier-card .tier-idx{
  font-family:var(--mono);font-size:13px;font-weight:600;color:var(--accent-500);letter-spacing:.08em;
}
.tier-card h3{font-size:20px;}
.tier-card .tier-desc{font-size:15px;line-height:1.75;color:var(--text-600);}
.tier-card ul{display:flex;flex-direction:column;gap:10px;margin-top:auto;}
.tier-card ul li{display:flex;gap:10px;font-size:15px;line-height:1.7;color:var(--text-600);}
.tier-card ul li svg{flex:0 0 auto;margin-top:6px;color:var(--primary-600);}
.tier-card .tier-foot{display:flex;align-items:center;justify-content:space-between;padding-top:var(--s16);border-top:1px solid var(--line);}
.tier-card .tier-price{font-size:15px;color:var(--text-400);}
.tier-card .tier-price b{font-family:var(--mono);font-size:20px;color:var(--text-900);}

/* ---------- 步骤 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--s24);position:relative;}
.step{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:var(--s24);position:relative;
}
.step .step-no{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:50%;background:var(--primary-100);
  color:var(--primary-700);font-family:var(--mono);font-weight:600;font-size:14px;
}
.step h3{font-size:18px;margin-top:var(--s16);}
.step p{margin-top:10px;font-size:15px;line-height:1.75;color:var(--text-600);}

/* ---------- 特权细节卡 ---------- */
.detail-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--s24);}
.detail-card{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;display:flex;flex-direction:column;
  transition:border-color 180ms ease-out, transform 180ms ease-out, box-shadow 180ms ease-out;
}
.detail-card:hover{border-color:var(--primary-600);transform:translateY(-2px);box-shadow:var(--shadow-sm);}
.detail-card .thumb{height:180px;overflow:hidden;}
.detail-card .thumb img{width:100%;height:100%;border-radius:0;}
.detail-card .body{padding:var(--s24);display:flex;flex-direction:column;gap:var(--s12);}
.detail-card h3{font-size:20px;}
.detail-card p{font-size:15px;line-height:1.75;color:var(--text-600);}
.detail-card .meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:var(--s8);}

/* ---------- FAQ ---------- */
.faq-accordion{max-width:820px;margin:0 auto;background:var(--paper);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:last-child{border-bottom:0;}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:var(--s16);
  padding:20px var(--s24);background:transparent;border:0;cursor:pointer;text-align:left;
  font-size:17px;font-weight:600;color:var(--text-900);
  transition:color 180ms ease-out, background-color 180ms ease-out;
}
.faq-q:hover{color:var(--primary-700);background:#FBFAF6;}
.faq-q .chev{flex:0 0 auto;color:var(--text-400);transition:transform 220ms ease-out, color 180ms ease-out;}
.faq-item.is-open .faq-q{color:var(--primary-700);}
.faq-item.is-open .chev{transform:rotate(180deg);color:var(--accent-500);}
.faq-a{max-height:0;overflow:hidden;transition:max-height 260ms ease-out;}
.faq-a p{padding:0 var(--s24) 20px;font-size:16px;line-height:1.85;color:var(--text-600);}

/* ---------- CTA 带 ---------- */
.cta-band{background:var(--ink-900);color:#fff;position:relative;overflow:hidden;}
.cta-band::before{
  content:"";position:absolute;right:-140px;top:-120px;width:520px;height:520px;
  border:1px solid rgba(255,255,255,.08);border-radius:50%;
}
.cta-inner{
  position:relative;z-index:2;display:grid;grid-template-columns:7fr 5fr;gap:var(--s48);
  padding:var(--s64) 0;align-items:center;
}
.cta-band h2{color:#fff;font-size:clamp(24px,2.6vw,34px);line-height:1.3;}
.cta-band p{color:rgba(255,255,255,.76);margin-top:var(--s12);max-width:520px;}
.cta-points{display:flex;flex-wrap:wrap;gap:var(--s16) var(--s24);margin-top:var(--s24);}
.cta-points li{display:flex;align-items:center;gap:8px;font-size:15px;color:rgba(255,255,255,.84);}
.cta-points svg{color:var(--accent-500);}
.cta-actions{display:flex;flex-wrap:wrap;gap:var(--s16);justify-content:flex-end;}
.cta-actions .btn{min-width:180px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.72);padding:var(--s64) 0 var(--s24);}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:var(--s32);}
.footer-brand .logo{color:#fff;}
.footer-brand .logo-text strong{color:#fff;}
.footer-brand .logo-text em{color:rgba(255,255,255,.5);}
.footer-brand .logo-mark{color:#fff;}
.footer-brand p{margin-top:var(--s16);font-size:15px;line-height:1.85;color:rgba(255,255,255,.66);max-width:380px;}
.footer-col h4{color:#fff;font-size:15px;letter-spacing:.02em;margin-bottom:var(--s16);}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:15px;color:rgba(255,255,255,.7);}
.footer-col a:hover{color:var(--accent-500);text-decoration:underline;text-underline-offset:3px;}
.footer-bottom{
  margin-top:var(--s48);padding-top:var(--s24);border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:var(--s12);justify-content:space-between;font-size:13px;color:rgba(255,255,255,.55);
}
.footer-bottom a{color:rgba(255,255,255,.75);}
.footer-bottom a:hover{color:var(--accent-500);}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .header-left{gap:var(--s24);}
  .main-nav{gap:var(--s16);}
}
@media (max-width:1023px){
  :root{--header-h:64px;}
  .nav-toggle{display:inline-flex;}
  .main-nav{
    position:fixed;left:0;right:0;top:var(--header-h);
    flex-direction:column;align-items:stretch;gap:2px;
    background:var(--sand-50);border-bottom:1px solid var(--line);
    padding:var(--s12) var(--s24) var(--s24);
    box-shadow:var(--shadow-md);
    display:none;
  }
  .main-nav.is-open{display:flex;}
  .main-nav a{padding:12px 0;font-size:16px;border-bottom:1px solid var(--line);}
  .main-nav a:last-child{border-bottom:0;}
  .main-nav a.is-active::before{left:auto;right:0;}
  .nav-search{
    position:fixed;left:0;right:0;top:var(--header-h);z-index:59;
    border-radius:0;border:0;border-bottom:1px solid var(--line);
    padding:var(--s12) var(--s24);background:var(--sand-50);
    display:none;
  }
  .nav-search.is-open{display:flex;}
  .nav-search input{width:100%;padding:0 10px;}
  .nav-search.is-open input{width:100%;}
  .head-split{grid-template-columns:1fr;gap:var(--s32);}
  .head-media{height:220px;}
  .tier-cards{grid-template-columns:repeat(2,1fr);}
  .steps{grid-template-columns:repeat(2,1fr);}
  .detail-grid{grid-template-columns:repeat(2,1fr);}
  .cta-inner{grid-template-columns:1fr;gap:var(--s32);}
  .cta-actions{justify-content:flex-start;}
  .footer-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:767px){
  body{font-size:16px;}
  .container{padding:0 20px;}
  .section{padding:var(--s48) 0;}
  .page-head{padding:var(--s32) 0 var(--s24);}
  .head-media{height:190px;}
  .head-media .media-note{left:20px;right:20px;bottom:20px;}
  .matrix-hint{display:block;}
  .matrix-table th,.matrix-table td{padding:0 var(--s12);font-size:14px;height:40px;}
  .matrix-table th:first-child,.matrix-table td:first-child{
    position:sticky;left:0;z-index:2;background:var(--paper);
    box-shadow:1px 0 0 var(--line);
  }
  .matrix-table tbody tr:nth-child(even) td:first-child{background:#FBFAF6;}
  .matrix-table tbody tr:hover td:first-child{background:var(--primary-100);}
  .matrix-table .col-item{width:150px;}
  .tier-cards{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;}
  .detail-grid{grid-template-columns:1fr;}
  .faq-q{padding:16px 20px;font-size:16px;}
  .faq-a p{padding:0 20px 18px;}
  .footer-grid{grid-template-columns:1fr;gap:var(--s24);}
  .tier-tabs{border-radius:var(--r-lg);width:100%;}
  .tier-tab{flex:1 1 calc(50% - 4px);justify-content:center;padding:0 12px;}
  .cta-actions .btn{width:100%;}
}
@media (max-width:559px){
  .container{padding:0 16px;}
  .logo-text em{display:none;}
  .page-head h1{font-size:28px;}
  .tier-tab{flex:1 1 100%;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category3 */
/* ============ 设计变量 ============ */
:root{
  --ink-900:#0B1F1B;
  --primary-700:#0E4C3F;
  --primary-600:#14614F;
  --primary-100:#E4EFEA;
  --accent-500:#E4762A;
  --accent-100:#FBEBDD;
  --sand-50:#F7F5EF;
  --paper:#FFFFFF;
  --line:#E3DED2;
  --line-strong:#CFC8B8;
  --text-900:#16211E;
  --text-600:#5A6663;
  --text-400:#8C968F;
  --ok:#1E7A5A;
  --warn:#C98A00;
  --danger:#B03A2E;
  --placeholder:#EDEAE1;
  --radius-lg:16px;
  --radius-md:12px;
  --radius-pill:999px;
  --shadow-base:0 1px 2px rgba(11,31,27,.05),0 10px 30px -18px rgba(11,31,27,.25);
  --shadow-hover:0 2px 4px rgba(11,31,27,.06),0 18px 42px -20px rgba(11,31,27,.34);
  --container:1200px;
  --ease:180ms ease-out;
  --font: -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

/* ============ 基础重置 ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:17px;
  line-height:1.85;
  color:var(--text-900);
  background:var(--sand-50);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--radius-md)}
a{color:inherit;text-decoration:none;transition:color var(--ease),border-color var(--ease)}
button,input,textarea,select{font:inherit;color:inherit}
button{cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-0.01em;color:var(--text-900)}
p{margin:0 0 18px}
p:last-child{margin-bottom:0}
:focus-visible{outline:2px solid var(--accent-500);outline-offset:2px;border-radius:6px}
.num{font-variant-numeric:tabular-nums;font-family:var(--mono),var(--font)}

/* ============ 容器与通用 ============ */
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:72px 0}
.section-tight{padding:48px 0}
.section-head{max-width:720px;margin-bottom:32px}
.section-head h2{font-size:clamp(24px,2.6vw,34px);line-height:1.3;margin-bottom:12px}
.section-head p{font-size:16px;color:var(--text-600);margin:0}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.06em;color:var(--primary-700);text-transform:none;font-weight:600;margin-bottom:12px}
.eyebrow::before{content:"";width:18px;height:2px;background:var(--accent-500);border-radius:2px}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--radius-md);
  border:1px solid transparent;font-size:15px;font-weight:600;
  transition:background var(--ease),color var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease);
  white-space:nowrap;
}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-primary{background:var(--primary-700);color:#fff}
.btn-primary:hover{background:var(--primary-600);transform:translateY(-1px);box-shadow:var(--shadow-base)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-outline{background:transparent;border-color:var(--line-strong);color:var(--text-900)}
.btn-outline:hover{border-color:var(--primary-600);color:var(--primary-700);transform:translateY(-1px)}
.btn-soft{background:var(--primary-100);color:var(--primary-700)}
.btn-soft:hover{background:#d6e7e0;transform:translateY(-1px)}
.btn-accent{background:var(--accent-500);color:#16211E}
.btn-accent:hover{background:#d76a20;transform:translateY(-1px);box-shadow:0 12px 28px -16px rgba(228,118,42,.8)}
.btn-ghost-light{background:transparent;border-color:rgba(255,255,255,.42);color:#fff}
.btn-ghost-light:hover{border-color:#fff;background:rgba(255,255,255,.08)}
.btn[disabled]{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--sand-50);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:64px}
.header-left{display:flex;align-items:center;gap:30px;min-width:0}
.header-right{display:flex;align-items:center;gap:12px}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--ink-900)}
.logo-mark{width:34px;height:34px;color:var(--primary-700);flex:none}
.logo-text{display:flex;flex-direction:column;line-height:1.1}
.logo-text strong{font-size:16px;font-weight:700;letter-spacing:-0.01em;white-space:nowrap}
.logo-text em{font-style:normal;font-size:11px;letter-spacing:.16em;color:var(--text-400)}
.main-nav{display:flex;align-items:center;gap:22px}
.main-nav a{
  position:relative;font-size:15px;color:var(--text-600);padding:6px 0;
  transition:color var(--ease);
}
.main-nav a::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--accent-500);transform:scaleX(0);transform-origin:left;
  transition:transform var(--ease);
}
.main-nav a:hover{color:var(--primary-700)}
.main-nav a:hover::after{transform:scaleX(1)}
.main-nav a.is-active{color:var(--primary-700);font-weight:600}
.main-nav a.is-active::before{
  content:"";position:absolute;left:50%;bottom:-12px;width:5px;height:5px;border-radius:50%;
  background:var(--accent-500);transform:translateX(-50%);
}
.nav-search{display:flex;align-items:center;gap:6px;position:relative}
.nav-search button{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;border:1px solid var(--line);background:var(--paper);
  border-radius:var(--radius-md);color:var(--text-600);
  transition:border-color var(--ease),color var(--ease),background var(--ease);
}
.nav-search button:hover{border-color:var(--primary-600);color:var(--primary-700)}
.nav-search input{
  width:0;opacity:0;padding:0;border:0;border-bottom:1px solid transparent;
  background:transparent;height:40px;font-size:14px;
  transition:width 220ms ease-out,opacity 220ms ease-out,padding 220ms ease-out;
}
.nav-search.is-open input{width:260px;opacity:1;padding:0 10px;border-bottom-color:var(--line-strong)}
.nav-search.is-open input:focus{outline:none;border-bottom-color:var(--primary-600)}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:40px;height:40px;border:1px solid var(--line);background:var(--paper);
  border-radius:var(--radius-md);color:var(--text-600);
}

/* ============ 面包屑与页头 ============ */
.page-head{padding:40px 0 24px}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-400);margin-bottom:18px}
.breadcrumb a:hover{color:var(--accent-500)}
.breadcrumb .sep{color:var(--line-strong)}
.breadcrumb .current{color:var(--text-600)}
h1{font-size:clamp(30px,4.2vw,52px);line-height:1.22;max-width:20em;margin-bottom:16px}
.page-lead{font-size:17px;line-height:1.85;color:var(--text-600);max-width:660px;margin:0}
.page-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.badge{
  display:inline-flex;align-items:center;gap:6px;height:22px;padding:0 12px;
  border-radius:var(--radius-pill);font-size:12px;font-weight:600;line-height:1;
}
.badge-primary{background:var(--primary-100);color:var(--primary-700)}
.badge-accent{background:var(--accent-100);color:#9C4A12}

/* ============ 横幅 ============ */
.banner{
  position:relative;height:240px;border-radius:var(--radius-lg);overflow:hidden;
  margin:8px 0 0;background:var(--placeholder);
  border:1px solid var(--line);
}
.banner-media{position:absolute;inset:0}
.banner-media img{width:100%;height:100%;object-fit:cover;border-radius:0}
.banner-overlay{
  position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(11,31,27,.86) 0%,rgba(11,31,27,.52) 45%,rgba(11,31,27,.14) 100%);
}
.banner-content{
  position:relative;height:100%;display:flex;flex-direction:column;justify-content:flex-end;
  padding:28px 32px;color:#fff;gap:10px;
}
.banner-content .badge{background:rgba(255,255,255,.14);color:#fff}
.banner-content p{margin:0;font-size:15px;color:rgba(255,255,255,.82);max-width:520px}
.banner-stats{display:flex;flex-wrap:wrap;gap:28px;margin-top:6px}
.banner-stats div{display:flex;flex-direction:column;line-height:1.3}
.banner-stats strong{font-size:20px;color:var(--accent-500);font-variant-numeric:tabular-nums}
.banner-stats span{font-size:12px;color:rgba(255,255,255,.7)}

/* ============ 搜索与标签 ============ */
.help-tools{padding:56px 0 8px}
.help-tools h2{font-size:clamp(22px,2.3vw,28px);margin-bottom:10px}
.help-tools .hint{font-size:15px;color:var(--text-600);margin:0 0 24px;max-width:640px}
.search-field{position:relative;max-width:760px}
.search-field input{
  width:100%;height:48px;border-radius:var(--radius-md);
  border:1px solid var(--line);background:var(--paper);
  padding:0 16px 0 48px;font-size:16px;
  transition:border-color var(--ease),box-shadow var(--ease);
}
.search-field input::placeholder{color:var(--text-400)}
.search-field input:focus{outline:none;border-color:var(--primary-600);box-shadow:0 0 0 3px var(--primary-100)}
.search-field .icon{
  position:absolute;left:16px;top:50%;transform:translateY(-50%);
  color:var(--text-400);display:flex;
}
.chip-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.chip{
  height:34px;padding:0 16px;border-radius:var(--radius-pill);
  border:1px solid var(--line-strong);background:var(--paper);
  font-size:14px;color:var(--text-600);
  transition:background var(--ease),color var(--ease),border-color var(--ease);
}
.chip:hover{border-color:var(--accent-500);color:var(--primary-700)}
.chip.is-active{background:var(--primary-700);border-color:var(--primary-700);color:#fff}

/* ============ FAQ 双列 ============ */
.faq-section{padding:40px 0 72px}
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px 28px;align-items:start}
.faq-group{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:24px;box-shadow:var(--shadow-base);
  transition:opacity var(--ease),transform var(--ease);
}
.faq-group[hidden]{display:none}
.faq-group-head{display:flex;align-items:center;gap:12px;margin-bottom:8px}
.faq-group-head .idx{
  font-size:13px;font-weight:600;color:var(--accent-500);
  font-variant-numeric:tabular-nums;font-family:var(--mono),var(--font);
}
.faq-group-head h3{font-size:20px;line-height:1.4}
.faq-group-note{font-size:13px;color:var(--text-400);margin:0 0 8px}
.faq-item{border-top:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:none;border:0;padding:16px 0;text-align:left;
  font-size:16px;font-weight:600;line-height:1.6;color:var(--text-900);
  transition:color var(--ease);
}
.faq-q:hover{color:var(--primary-700)}
.faq-q .chev{flex:none;color:var(--accent-500);transition:transform var(--ease);display:flex}
.faq-item.is-open .faq-q{color:var(--primary-700)}
.faq-item.is-open .chev{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 240ms ease-out}
.faq-a p{font-size:15px;line-height:1.85;color:var(--text-600);padding-right:8px}
.faq-item.is-open .faq-a{max-height:340px}
.faq-a .faq-link{color:var(--primary-700);border-bottom:1px solid var(--primary-100)}
.faq-a .faq-link:hover{border-bottom-color:var(--accent-500);color:var(--accent-500)}
.faq-empty{
  grid-column:1/-1;min-height:240px;display:none;flex-direction:column;
  align-items:center;justify-content:center;gap:14px;text-align:center;
  background:var(--paper);border:1px dashed var(--line-strong);border-radius:var(--radius-lg);
  color:var(--text-600);padding:32px;
}
.faq-empty.is-visible{display:flex}
.faq-empty svg{color:var(--text-400)}
.faq-empty strong{font-size:18px;color:var(--text-900)}

/* ============ 仍未解决 ============ */
.stuck-band{padding:0 0 80px}
.stuck-card{
  display:grid;grid-template-columns:340px 1fr 260px;gap:32px;align-items:center;
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:28px;box-shadow:var(--shadow-base);
}
.stuck-card .stuck-media{height:200px;border-radius:var(--radius-md);overflow:hidden;background:var(--placeholder)}
.stuck-card .stuck-media img{width:100%;height:100%;object-fit:cover;border-radius:0}
.stuck-body h2{font-size:clamp(22px,2.2vw,28px);margin-bottom:12px}
.stuck-body p{font-size:15px;color:var(--text-600);margin:0}
.stuck-actions{display:flex;flex-direction:column;gap:12px}
.stuck-actions .meta{font-size:13px;color:var(--text-400);margin:0;line-height:1.7}

/* ============ CTA 带 ============ */
.cta-band{
  position:relative;overflow:hidden;background:var(--ink-900);color:#fff;
  padding:72px 0;
}
.cta-band::after{
  content:"";position:absolute;right:-140px;top:-120px;width:620px;height:420px;
  border:1.5px solid rgba(228,118,42,.08);border-radius:50%;
  transform:rotate(-14deg);pointer-events:none;
}
.cta-inner{position:relative;display:grid;grid-template-columns:1.3fr .7fr;gap:40px;align-items:center}
.cta-band h2{color:#fff;font-size:clamp(24px,2.6vw,34px);line-height:1.3;margin-bottom:16px}
.cta-list{display:grid;gap:10px}
.cta-list li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:rgba(255,255,255,.78)}
.cta-list li svg{flex:none;margin-top:6px;color:var(--accent-500)}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.72);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px;padding-bottom:44px}
.footer-brand .logo{color:#fff}
.footer-brand .logo-mark{color:var(--accent-500)}
.footer-brand .logo-text em{color:rgba(255,255,255,.45)}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.58);margin:18px 0 0;max-width:360px}
.footer-col h4{font-size:14px;color:#fff;margin-bottom:16px;letter-spacing:.04em;font-weight:600}
.footer-col ul{display:grid;gap:10px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.64);border-bottom:1px solid transparent;padding-bottom:1px}
.footer-col a:hover{color:var(--accent-500);border-bottom-color:var(--accent-500)}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  padding:22px 0;border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;color:rgba(255,255,255,.5);
}
.footer-bottom a{color:rgba(255,255,255,.72);text-decoration:underline;text-underline-offset:3px}
.footer-bottom a:hover{color:var(--accent-500)}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .nav-search.is-open input{width:190px}
}
@media (max-width:1023px){
  .main-nav{
    position:absolute;left:0;right:0;top:100%;
    display:none;flex-direction:column;align-items:stretch;gap:4px;
    background:var(--paper);border-bottom:1px solid var(--line);
    padding:14px 24px 20px;box-shadow:var(--shadow-base);
  }
  .main-nav.is-open{display:flex}
  .main-nav a{padding:12px 0;border-bottom:1px solid var(--line);font-size:16px}
  .main-nav a:last-child{border-bottom:0}
  .main-nav a::after{display:none}
  .main-nav a.is-active::before{position:static;display:inline-block;transform:none;margin-right:8px;vertical-align:middle}
  .nav-toggle{display:inline-flex}
  .header-left{gap:18px}
  .stuck-card{grid-template-columns:1fr;gap:24px}
  .stuck-card .stuck-media{height:220px}
  .stuck-actions{flex-direction:row;flex-wrap:wrap;align-items:center}
  .cta-inner{grid-template-columns:1fr;gap:28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px 24px}
  .section{padding:64px 0}
}
@media (max-width:899px){
  .faq-grid{grid-template-columns:1fr}
}
@media (max-width:767px){
  body{font-size:16px;line-height:1.8}
  .container{padding:0 20px}
  .header-inner{min-height:56px;gap:12px}
  .site-header .logo-text strong{font-size:15px}
  .site-header .logo-text em{font-size:10px;letter-spacing:.12em}
  .nav-search.is-open{position:absolute;left:20px;right:20px;top:60px;background:var(--paper);border:1px solid var(--line);border-radius:var(--radius-md);padding:6px 10px;box-shadow:var(--shadow-base);z-index:70}
  .nav-search.is-open input{width:100%;border-bottom:0}
  .page-head{padding:28px 0 18px}
  .banner{height:200px}
  .banner-content{padding:20px}
  .banner-stats{gap:20px;margin-top:2px}
  .banner-stats strong{font-size:17px}
  .help-tools{padding:40px 0 4px}
  .faq-section{padding:32px 0 56px}
  .section{padding:48px 0}
  .section-head{margin-bottom:24px}
  .faq-group{padding:20px}
  .faq-group-head h3{font-size:18px}
  .stuck-band{padding:0 0 56px}
  .stuck-card{padding:20px}
  .cta-band{padding:56px 0}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (max-width:374px){
  .btn{padding:0 16px;font-size:14px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important}
}

/* roulang page: category4 */
:root{
  --ink-900:#0B1F1B;
  --primary-700:#0E4C3F;
  --primary-600:#14614F;
  --primary-100:#E4EFEA;
  --accent-500:#E4762A;
  --accent-100:#FBEBDD;
  --sand-50:#F7F5EF;
  --paper:#FFFFFF;
  --line:#E3DED2;
  --line-strong:#CFC8B8;
  --text-900:#16211E;
  --text-600:#5A6663;
  --text-400:#8C968F;
  --ok:#1E7A5A;
  --warn:#C98A00;
  --danger:#B03A2E;
  --radius-lg:16px;
  --radius-md:12px;
  --radius-sm:10px;
  --shadow-1:0 1px 2px rgba(11,31,27,.05),0 10px 30px -18px rgba(11,31,27,.25);
  --shadow-2:0 2px 4px rgba(11,31,27,.07),0 18px 42px -20px rgba(11,31,27,.32);
  --font-sans:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --container:1200px;
  --gutter:24px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.85;
  color:var(--text-900);
  background:var(--sand-50);
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none;transition:color 180ms ease-out}
a:hover{color:var(--primary-700)}
button{font:inherit;color:inherit;cursor:pointer;border:0;background:none}
input{font:inherit}
ul,ol{margin:0;padding:0}
h1,h2,h3,h4{margin:0;letter-spacing:-.01em;font-weight:700;color:var(--text-900)}
p{margin:0 0 18px}
p:last-child{margin-bottom:0}
:focus-visible{outline:2px solid var(--accent-500);outline-offset:2px;border-radius:6px}
::selection{background:var(--primary-100);color:var(--primary-700)}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 var(--gutter)}
.section{padding:88px 0}
.section-alt{background:var(--paper)}
.section-head{max-width:760px;margin-bottom:40px}
.section-head h2{font-size:clamp(24px,2.6vw,34px);line-height:1.3;margin-bottom:14px}
.section-head p{color:var(--text-600);margin:0}
.section-head--row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;max-width:none}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:var(--sand-50);
  border-bottom:1px solid var(--line);
}
.header-inner{
  position:relative;
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  min-height:64px;
}
.header-left{display:flex;align-items:center;gap:34px;min-width:0}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--primary-700)}
.logo-mark{width:34px;height:34px;flex:none}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-text strong{font-size:16px;font-weight:700;color:var(--text-900);letter-spacing:.01em}
.logo-text em{font-style:normal;font-size:12px;color:var(--text-600);letter-spacing:.1em}
.main-nav{display:flex;align-items:center;gap:26px}
.main-nav a{position:relative;font-size:15px;color:var(--text-600);padding:6px 0;white-space:nowrap}
.main-nav a:hover{color:var(--text-900)}
.main-nav a:hover::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--accent-500)}
.main-nav a.is-active{color:var(--primary-700);font-weight:600}
.main-nav a.is-active::before{content:"";position:absolute;top:1px;right:-11px;width:5px;height:5px;border-radius:50%;background:var(--accent-500)}
.header-right{display:flex;align-items:center;gap:12px}
.nav-search{
  display:flex;align-items:center;gap:6px;
  border:1px solid transparent;border-radius:var(--radius-md);padding:2px 4px;
  transition:border-color 180ms ease-out,background-color 180ms ease-out;
}
.nav-search button{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:9px;color:var(--text-600);transition:background-color 180ms ease-out,color 180ms ease-out}
.nav-search button:hover{background:var(--primary-100);color:var(--primary-700)}
.nav-search input{
  width:0;opacity:0;padding:0;height:34px;border:0;background:transparent;
  font-size:15px;color:var(--text-900);
  transition:width 180ms ease-out,opacity 180ms ease-out,padding 180ms ease-out;
}
.nav-search input::placeholder{color:var(--text-400)}
.nav-search.is-open{border-color:var(--line);background:var(--paper)}
.nav-search.is-open input{width:250px;opacity:1;padding:0 4px}
.nav-toggle{display:none;align-items:center;justify-content:center;width:38px;height:38px;border:1px solid var(--line);border-radius:var(--radius-sm);color:var(--text-600);background:var(--paper)}
.nav-toggle:hover{border-color:var(--primary-600);color:var(--primary-700)}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--radius-md);
  font-size:15px;font-weight:600;line-height:1;letter-spacing:.01em;
  border:1px solid transparent;
  transition:background-color 180ms ease-out,color 180ms ease-out,border-color 180ms ease-out,transform 180ms ease-out,box-shadow 180ms ease-out;
}
.btn:hover{transform:translateY(-1px)}
.btn:active{transform:translateY(1px);box-shadow:none}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-lg{height:52px;padding:0 30px;font-size:16px}
.btn-primary{background:var(--primary-700);color:#fff;box-shadow:var(--shadow-1)}
.btn-primary:hover{background:var(--primary-600);color:#fff;box-shadow:var(--shadow-2)}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--text-900)}
.btn-ghost:hover{border-color:var(--primary-600);color:var(--primary-700)}
.btn-soft{background:var(--primary-100);color:var(--primary-700)}
.btn-soft:hover{background:#d7e8e1;color:var(--primary-600)}
.btn-accent{background:var(--accent-500);color:#16211E}
.btn-accent:hover{background:#d76a20;color:#16211E;box-shadow:var(--shadow-2)}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.45);color:#fff}
.btn-outline-light:hover{background:rgba(255,255,255,.1);color:#fff;border-color:rgba(255,255,255,.7)}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;height:22px;padding:0 12px;
  border-radius:999px;font-size:12px;font-weight:600;line-height:1;
  background:var(--primary-100);color:var(--primary-700);white-space:nowrap;
}
.badge-accent{background:var(--accent-100);color:#9c4d10}
.badge-line{background:transparent;border:1px solid var(--line-strong);color:var(--text-600)}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:999px;border:1px solid var(--line);
  background:var(--paper);font-size:13px;color:var(--text-600);
}
.chip svg{color:var(--primary-600)}

/* ============ 页头 ============ */
.page-head{padding:48px 0 64px}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;line-height:1.6;color:var(--text-400);margin-bottom:22px}
.breadcrumb a{color:var(--text-600)}
.breadcrumb a:hover{color:var(--primary-700)}
.breadcrumb span{color:var(--line-strong)}
.breadcrumb em{font-style:normal;color:var(--text-600)}
.page-head-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:5px 14px;border-radius:999px;
  background:var(--primary-100);color:var(--primary-700);
  font-size:13px;font-weight:600;letter-spacing:.1em;
}
.page-head h1{font-size:clamp(30px,4.2vw,46px);line-height:1.22;margin:20px 0 16px}
.page-head .lead{font-size:17px;line-height:1.8;color:var(--text-600);max-width:34em;margin-bottom:22px}
.head-meta{display:flex;flex-wrap:wrap;gap:10px}
.page-head-media{
  position:relative;margin:0;height:240px;border-radius:var(--radius-lg);
  overflow:hidden;border:1px solid var(--line);background:#EDEAE1;
}
.page-head-media img{width:100%;height:100%;object-fit:cover}
.page-head-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(11,31,27,.05) 35%,rgba(11,31,27,.62) 100%);
}
.page-head-media figcaption{
  position:absolute;left:20px;right:20px;bottom:16px;z-index:2;
  color:rgba(255,255,255,.92);font-size:13px;line-height:1.6;
}

/* ============ 频道栏 ============ */
.channel-bar{
  background:var(--paper);border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  padding:18px 0;
  position:sticky;top:64px;z-index:40;
}
.channel-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.channel-tabs{display:flex;align-items:center;gap:10px;overflow-x:auto;padding-bottom:2px;scrollbar-width:thin}
.channel-tab{
  height:38px;padding:0 18px;border-radius:999px;
  border:1px solid var(--line);background:var(--paper);
  font-size:14px;color:var(--text-600);white-space:nowrap;
  transition:background-color 180ms ease-out,color 180ms ease-out,border-color 180ms ease-out;
}
.channel-tab:hover{border-color:var(--primary-600);color:var(--primary-700)}
.channel-tab.is-active{background:var(--primary-700);border-color:var(--primary-700);color:#fff;font-weight:600}
.channel-search{display:flex;align-items:center;gap:8px;min-width:280px;flex:1 1 280px;max-width:380px}
.channel-search input{
  flex:1;height:44px;padding:0 16px;border:1px solid var(--line);border-radius:var(--radius-md);
  background:var(--sand-50);color:var(--text-900);font-size:15px;
  transition:border-color 180ms ease-out,box-shadow 180ms ease-out,background-color 180ms ease-out;
}
.channel-search input::placeholder{color:var(--text-400)}
.channel-search input:focus{outline:none;border-color:var(--primary-600);background:var(--paper);box-shadow:0 0 0 3px var(--primary-100)}
.channel-search button{
  height:44px;padding:0 20px;border-radius:var(--radius-md);
  background:var(--primary-700);color:#fff;font-size:14px;font-weight:600;
  transition:background-color 180ms ease-out;
}
.channel-search button:hover{background:var(--primary-600)}

/* ============ 头条大卡 ============ */
.feature-story{
  display:grid;grid-template-columns:5fr 7fr;gap:0;
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius-lg);
  overflow:hidden;box-shadow:var(--shadow-1);
}
.feature-media{margin:0;position:relative;min-height:330px;background:#EDEAE1}
.feature-media img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0}
.feature-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(11,31,27,0) 45%,rgba(11,31,27,.5) 100%);
}
.feature-media figcaption{position:absolute;left:20px;bottom:16px;z-index:2;color:#fff;font-size:13px}
.feature-body{padding:36px 40px;display:flex;flex-direction:column;gap:16px;justify-content:center}
.feature-body h2{font-size:clamp(22px,2.2vw,30px);line-height:1.35}
.feature-body h2 a:hover{color:var(--primary-700)}
.feature-body p{color:var(--text-600);font-size:16px;margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.story-meta{display:flex;flex-wrap:wrap;align-items:center;gap:16px;font-size:13px;color:var(--text-400);font-variant-numeric:tabular-nums}
.story-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--line-strong)}
.feature-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:4px}

/* ============ 横向列表行 ============ */
.story-rows{display:grid;gap:16px;margin-top:24px}
.story-row{
  display:grid;grid-template-columns:160px 1fr auto;gap:24px;align-items:center;
  padding:20px;background:var(--paper);border:1px solid var(--line);border-radius:var(--radius-lg);
  transition:border-color 180ms ease-out,transform 180ms ease-out,box-shadow 180ms ease-out;
}
.story-row:hover{border-color:var(--primary-600);transform:translateY(-2px);box-shadow:var(--shadow-2)}
.row-thumb{width:160px;height:100px;margin:0;border-radius:var(--radius-md);overflow:hidden;background:#EDEAE1}
.row-thumb img{width:100%;height:100%;object-fit:cover}
.row-body{display:flex;flex-direction:column;gap:8px;min-width:0}
.row-body h3{font-size:19px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.row-body h3 a:hover{color:var(--primary-700)}
.row-body p{
  margin:0;color:var(--text-600);font-size:15px;line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;
}
.row-meta{display:flex;flex-direction:column;align-items:flex-end;gap:10px;font-size:13px;color:var(--text-400);font-variant-numeric:tabular-nums;white-space:nowrap}
.row-link{font-size:14px;font-weight:600;color:var(--primary-700)}
.row-link:hover{color:var(--accent-500)}

/* ============ 分页 ============ */
.pager{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-top:32px}
.pager-label{font-size:13px;color:var(--text-400);margin-right:8px;font-variant-numeric:tabular-nums}
.pager a{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:40px;height:40px;padding:0 14px;
  border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--paper);
  font-size:14px;color:var(--text-600);font-variant-numeric:tabular-nums;
  transition:border-color 180ms ease-out,color 180ms ease-out,background-color 180ms ease-out;
}
.pager a:hover{border-color:var(--primary-600);color:var(--primary-700)}
.pager a.is-current{background:var(--primary-700);border-color:var(--primary-700);color:#fff;font-weight:600}
.pager .pager-next{margin-left:4px}

/* ============ 数据条 ============ */
.metrics{background:var(--paper);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:56px 0}
.metrics-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.metric{padding-right:16px;border-right:1px dashed var(--line)}
.metric:last-child{border-right:0}
.metric-num{
  display:block;font-size:clamp(28px,3vw,38px);line-height:1.1;font-weight:700;
  color:var(--accent-500);font-variant-numeric:tabular-nums;letter-spacing:-.01em;
}
.metric-label{display:block;margin-top:8px;font-size:14px;color:var(--text-600)}
.metric-note{display:block;margin-top:2px;font-size:13px;color:var(--text-400)}

/* ============ 流程 ============ */
.flow{list-style:none;display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.flow-step{
  position:relative;background:var(--paper);border:1px solid var(--line);
  border-radius:var(--radius-lg);padding:28px;
  transition:border-color 180ms ease-out,transform 180ms ease-out,box-shadow 180ms ease-out;
}
.flow-step:hover{border-color:var(--primary-600);transform:translateY(-2px);box-shadow:var(--shadow-2)}
.flow-idx{display:block;font-family:var(--font-mono);font-size:13px;letter-spacing:.14em;color:var(--accent-500);margin-bottom:14px}
.flow-step h3{font-size:20px;margin-bottom:10px}
.flow-step p{color:var(--text-600);font-size:15px;line-height:1.78;margin:0}

/* ============ FAQ ============ */
.faq-wrap{max-width:820px;margin:0 auto}
.faq-accordion{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 4px;text-align:left;font-size:17px;font-weight:600;color:var(--text-900);
  transition:color 180ms ease-out;
}
.faq-q:hover{color:var(--primary-700)}
.faq-arrow{
  flex:none;width:20px;height:20px;color:var(--text-400);
  transition:transform 220ms ease-out,color 180ms ease-out;
}
.faq-item.is-open .faq-arrow{transform:rotate(180deg);color:var(--accent-500)}
.faq-item.is-open .faq-q{color:var(--primary-700)}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows 240ms ease-out}
.faq-item.is-open .faq-a{grid-template-rows:1fr}
.faq-a-inner{overflow:hidden}
.faq-a-inner p{padding:0 4px 22px;color:var(--text-600);line-height:1.85;max-width:46em}

/* ============ CTA 暗带 ============ */
.cta-band{position:relative;overflow:hidden;background:var(--ink-900);color:#fff;padding:76px 0}
.cta-band::after{
  content:"";position:absolute;right:-140px;top:-120px;width:600px;height:600px;
  border-radius:50%;border:1px solid rgba(255,255,255,.08);pointer-events:none;
}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.15fr 1fr;gap:48px;align-items:center}
.cta-copy h2{color:#fff;font-size:clamp(24px,2.6vw,34px);line-height:1.3;margin-bottom:16px}
.cta-copy .cta-sub{color:rgba(255,255,255,.78);font-size:16px;margin:0}
.cta-points{list-style:none;display:grid;gap:12px;margin-top:24px}
.cta-points li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:rgba(255,255,255,.82)}
.cta-points svg{flex:none;margin-top:4px;color:var(--accent-500)}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.72);padding:64px 0 0;font-size:15px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px}
.footer-brand .logo{color:#fff;margin-bottom:18px}
.footer-brand .logo-text strong{color:#fff;font-size:16px}
.footer-brand .logo-text em{color:rgba(255,255,255,.55)}
.footer-brand p{color:rgba(255,255,255,.66);font-size:14px;line-height:1.85;max-width:34em}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px;letter-spacing:.02em}
.footer-col ul{list-style:none;display:grid;gap:10px}
.footer-col a{color:rgba(255,255,255,.7);font-size:14px;border-bottom:1px solid transparent;transition:color 180ms ease-out,border-color 180ms ease-out}
.footer-col a:hover{color:var(--accent-500);border-bottom-color:var(--accent-500)}
.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,.55);
}
.footer-bottom a{color:rgba(255,255,255,.7)}
.footer-bottom a:hover{color:var(--accent-500)}

/* ============ 响应式 ============ */
@media (max-width:1180px){
  .main-nav{gap:18px}
  .main-nav a{font-size:14px}
}
@media (max-width:1023px){
  .section{padding:64px 0}
  .header-left{gap:18px}
  .nav-toggle{display:inline-flex}
  .main-nav{
    display:none;position:absolute;left:0;right:0;top:100%;
    flex-direction:column;align-items:stretch;gap:0;
    background:var(--paper);border-bottom:1px solid var(--line);
    padding:8px 24px 16px;box-shadow:var(--shadow-1);
  }
  .main-nav.is-open{display:flex}
  .main-nav a{padding:13px 2px;border-bottom:1px solid var(--line);font-size:16px}
  .main-nav a:last-child{border-bottom:0}
  .main-nav a:hover::after{display:none}
  .main-nav a.is-active{background:var(--primary-100);border-radius:var(--radius-sm);padding-left:12px;padding-right:12px;border-bottom-color:transparent}
  .main-nav a.is-active::before{display:none}
  .page-head-grid{grid-template-columns:1fr;gap:32px}
  .page-head-media{height:220px}
  .channel-bar{position:static}
  .feature-story{grid-template-columns:1fr}
  .feature-media{min-height:240px;position:relative}
  .feature-media img{position:relative;height:240px}
  .feature-body{padding:28px}
  .metrics-grid{grid-template-columns:repeat(2,1fr);gap:28px 24px}
  .metric:nth-child(2){border-right:0}
  .flow{grid-template-columns:1fr}
  .cta-inner{grid-template-columns:1fr;gap:32px}
  .cta-actions{justify-content:flex-start}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
}
@media (max-width:767px){
  body{font-size:16px;line-height:1.8}
  .section{padding:48px 0}
  .container{padding:0 20px}
  .header-inner{min-height:56px}
  .logo-text strong{font-size:15px}
  .logo-mark{width:30px;height:30px}
  .nav-search.is-open{
    position:absolute;left:0;right:0;top:100%;
    border-radius:0;border:0;border-bottom:1px solid var(--line);
    background:var(--sand-50);padding:10px 20px;gap:10px;
  }
  .nav-search.is-open input{width:100%;padding:0 8px}
  .page-head{padding:32px 0 48px}
  .page-head-media{height:200px}
  .channel-inner{flex-direction:column;align-items:stretch;gap:14px}
  .channel-search{max-width:none;min-width:0;width:100%}
  .feature-media img{height:200px}
  .feature-media{min-height:200px}
  .feature-body{padding:24px 20px}
  .story-row{grid-template-columns:1fr;gap:16px;padding:16px}
  .row-thumb{width:100%;height:180px}
  .row-meta{flex-direction:row;align-items:center;justify-content:space-between;width:100%}
  .metrics-grid{grid-template-columns:1fr 1fr;gap:24px 16px}
  .metric{border-right:0;padding-right:0}
  .metric-num{font-size:28px}
  .flow-step{padding:22px 20px}
  .cta-band{padding:56px 0}
  .cta-points li{font-size:14px}
  .btn-lg{height:48px;padding:0 24px;font-size:15px}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  .pager a{min-width:38px;height:38px;padding:0 12px}
  .metrics-grid{grid-template-columns:1fr}
  .feature-actions .btn{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *{transition-duration:.01ms !important;animation-duration:.01ms !important;scroll-behavior:auto !important}
}