/* roulang page: index */
:root{
  --brand-900:#0C3B2E;
  --brand-700:#0E5B45;
  --brand-500:#17A673;
  --accent-600:#E8541F;
  --accent-500:#FF6A2B;
  --ink-900:#141A17;
  --ink-600:#4C564F;
  --ink-400:#7C877F;
  --bg-100:#F7F6F2;
  --surface:#FFFFFF;
  --line:#E4E1DA;
  --info-bg:#EEF5F1;
  --radius-card:16px;
  --radius-btn:12px;
  --radius-img:12px;
  --shadow-1:0 1px 2px rgba(20,30,25,.06), 0 14px 34px -14px rgba(20,30,25,.16);
  --shadow-2:0 2px 4px rgba(20,30,25,.08), 0 22px 46px -16px rgba(20,30,25,.22);
  --font-cn:"PingFang SC","HarmonyOS Sans","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:17px;
  line-height:1.9;
  color:var(--ink-600);
  background:var(--bg-100);
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand-500);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--accent-500);}
button,input,select,textarea{font:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;line-height:1.35;}
p{margin:0 0 1.2em;}
p:last-child{margin-bottom:0;}
time,.num{font-variant-numeric:tabular-nums;}
:focus-visible{outline:2px solid var(--accent-500);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:100px 0;}
.section-sm{padding:64px 0;}
.section-head{max-width:760px;margin-bottom:44px;}
.section-kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:500;color:var(--brand-700);
  background:var(--info-bg);border-radius:999px;padding:5px 14px;margin-bottom:18px;
}
.section-title{font-size:34px;letter-spacing:0;margin-bottom:16px;}
.section-desc{font-size:17px;color:var(--ink-600);max-width:720px;}
.divider-line{height:1px;background:var(--line);border:0;margin:0;}
.accent-bar{position:relative;padding-left:16px;}
.accent-bar::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;border-radius:3px;background:var(--brand-700);}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.96);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .22s ease;
}
.site-header.is-scrolled{box-shadow:0 10px 28px -18px rgba(20,30,25,.45);}
.nav-bar{display:flex;align-items:center;gap:18px;height:74px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:36px;height:36px;border-radius:11px;
  background:linear-gradient(135deg,var(--brand-700),var(--brand-500));
  color:#fff;display:grid;place-items:center;font-size:15px;font-weight:700;
  box-shadow:0 8px 18px -10px rgba(14,91,69,.8);
}
.brand-text{font-size:17px;font-weight:700;color:var(--ink-900);white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:10px;}
.nav-link{
  position:relative;display:inline-block;padding:9px 13px;border-radius:999px;
  font-size:15px;color:var(--ink-600);font-weight:500;white-space:nowrap;
}
.nav-link:hover{background:var(--info-bg);color:var(--brand-700);}
.nav-link.active{color:var(--brand-700);font-weight:700;}
.nav-link.active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:3px;height:2px;
  border-radius:2px;background:var(--brand-700);
}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:auto;}
.nav-search{
  display:flex;align-items:center;gap:8px;height:42px;min-width:212px;
  padding:0 8px 0 13px;background:var(--bg-100);
  border:1px solid var(--line);border-radius:12px;transition:border-color .18s,box-shadow .18s;
}
.nav-search i{color:var(--ink-400);font-size:14px;}
.nav-search input{border:0;background:transparent;outline:0;width:100%;font-size:14px;color:var(--ink-900);}
.nav-search input::placeholder{color:var(--ink-400);}
.nav-search:focus-within{border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(23,166,115,.16);background:#fff;}
.kbd-hint{font-size:11px;color:var(--ink-400);border:1px solid var(--line);background:#fff;border-radius:6px;padding:1px 6px;white-space:nowrap;}
.icon-btn{
  width:42px;height:42px;border-radius:12px;border:1px solid var(--line);background:#fff;
  color:var(--ink-600);display:grid;place-items:center;cursor:pointer;transition:all .18s ease;
}
.icon-btn:hover{border-color:var(--brand-500);color:var(--brand-700);background:var(--info-bg);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:background .18s,color .18s,transform .14s,box-shadow .18s,border-color .18s;
  white-space:nowrap;
}
.btn-primary{background:var(--accent-500);color:#fff;box-shadow:0 12px 24px -14px rgba(255,106,43,.9);}
.btn-primary:hover{background:var(--accent-600);color:#fff;transform:translateY(-1px);box-shadow:0 16px 28px -14px rgba(232,84,31,.9);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{background:transparent;border-color:var(--brand-700);color:var(--brand-700);}
.btn-ghost:hover{background:var(--info-bg);color:var(--brand-700);}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.55);color:#fff;}
.btn-outline-light:hover{background:rgba(255,255,255,.14);color:#fff;border-color:#fff;}
.btn-sm{height:40px;padding:0 16px;font-size:14px;}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.5;cursor:not-allowed;transform:none;}
.btn-block{width:100%;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:15px;color:var(--brand-700);}
.link-arrow i{transition:transform .18s ease;font-size:12px;}
.link-arrow:hover{color:var(--accent-500);}
.link-arrow:hover i{transform:translateX(3px);}
.menu-toggle{display:none;}

/* 抽屉 */
.drawer-overlay{
  position:fixed;inset:0;background:rgba(12,20,16,.45);
  opacity:0;visibility:hidden;transition:opacity .22s ease,visibility .22s;z-index:90;
}
.drawer-overlay.open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:300px;max-width:86vw;z-index:95;
  background:#fff;box-shadow:-20px 0 50px -24px rgba(20,30,25,.5);
  transform:translateX(102%);transition:transform .26s ease;
  padding:22px 20px;display:flex;flex-direction:column;gap:8px;overflow-y:auto;
}
.drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px;}
.drawer-link{padding:13px 12px;border-radius:12px;font-size:16px;color:var(--ink-900);font-weight:500;}
.drawer-link:hover,.drawer-link.active{background:var(--info-bg);color:var(--brand-700);}
.drawer .btn{margin-top:14px;}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;color:#fff;
  background:var(--brand-900) url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  padding:104px 0 92px;
}
.hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(12,59,46,.94) 0%,rgba(12,59,46,.78) 46%,rgba(12,59,46,.52) 100%);
}
.hero .container{position:relative;z-index:2;}
.hero-grid{display:grid;grid-template-columns:1.02fr .98fr;gap:56px;align-items:center;}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.28);
  color:#fff;border-radius:999px;padding:6px 15px;font-size:13px;margin-bottom:22px;
}
.hero-tag i{color:var(--accent-500);}
.hero h1{
  color:#fff;font-size:52px;line-height:1.24;font-weight:700;margin-bottom:22px;
}
.hero h1 em{font-style:normal;color:#8FE3C1;}
.hero-sub{font-size:17px;line-height:1.9;color:rgba(255,255,255,.84);max-width:600px;margin-bottom:32px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:38px;}
.hero-stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:10px;
  border-top:1px solid rgba(255,255,255,.2);padding-top:24px;max-width:620px;
}
.hero-stat .num{display:block;font-size:27px;font-weight:700;color:#fff;line-height:1.3;}
.hero-stat span{font-size:13px;color:rgba(255,255,255,.68);}
.hero-media{position:relative;}
.hero-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:18px;
  box-shadow:0 30px 60px -24px rgba(0,0,0,.6);
}
.hero-float{
  position:absolute;left:-22px;bottom:26px;background:#fff;border-radius:14px;
  padding:14px 18px;box-shadow:var(--shadow-2);max-width:250px;
}
.hero-float strong{display:block;font-size:15px;color:var(--ink-900);margin-bottom:4px;}
.hero-float span{font-size:13px;color:var(--ink-400);line-height:1.7;}

/* ---------- 品牌主张 ---------- */
.claim{background:var(--surface);border-bottom:1px solid var(--line);}
.claim-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:start;}
.claim-list li{
  display:flex;gap:14px;padding:16px 0;border-bottom:1px solid var(--line);
}
.claim-list li:last-child{border-bottom:0;}
.claim-list i{color:var(--brand-500);font-size:17px;margin-top:5px;}
.claim-list strong{display:block;color:var(--ink-900);font-size:16px;font-weight:600;margin-bottom:4px;}
.claim-list span{font-size:15px;color:var(--ink-600);line-height:1.8;}
.claim-aside{background:var(--info-bg);border-radius:var(--radius-card);padding:30px 28px;border:1px solid #DCE9E2;}
.claim-aside h3{font-size:20px;font-weight:600;margin-bottom:14px;}
.claim-aside p{font-size:15px;color:var(--ink-600);}
.claim-aside ul{margin-top:18px;display:grid;gap:10px;}
.claim-aside ul li{font-size:14px;color:var(--ink-600);display:flex;gap:9px;}
.claim-aside ul li i{color:var(--brand-700);margin-top:5px;font-size:12px;}

/* ---------- 故事 ---------- */
.story{background:var(--bg-100);}
.story-row{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center;}
.story-row + .story-row{margin-top:96px;}
.story-media{position:relative;overflow:hidden;border-radius:var(--radius-card);box-shadow:var(--shadow-1);}
.story-media img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .22s ease;}
.story-media:hover img{transform:scale(1.03);}
.story-body h3{font-size:26px;font-weight:700;margin-bottom:18px;}
.story-body p{font-size:16px;line-height:1.95;}
.story-facts{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:26px;}
.story-fact{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:16px 18px;}
.story-fact b{display:block;font-size:19px;color:var(--brand-700);font-variant-numeric:tabular-nums;}
.story-fact span{font-size:13px;color:var(--ink-400);}

/* ---------- 精选内容卡 ---------- */
.picks{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.picks-grid{display:grid;grid-template-columns:1.08fr 1fr;gap:26px;align-items:stretch;}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);transition:box-shadow .2s ease,transform .2s ease,border-color .2s;
  overflow:hidden;
}
.card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);border-color:#D7D3C9;}
.card-media{overflow:hidden;border-radius:0;}
.card-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .22s ease;}
.card:hover .card-media img{transform:scale(1.03);}
.card-body{padding:24px 26px 26px;}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--info-bg);color:var(--brand-700);
  font-size:12px;font-weight:600;border-radius:999px;padding:4px 12px;margin-bottom:14px;
}
.badge-accent{background:#FFF1EA;color:var(--accent-600);}
.card-title{font-size:21px;font-weight:700;margin-bottom:12px;}
.card-text{font-size:15px;color:var(--ink-600);line-height:1.85;}
.card-meta{display:flex;align-items:center;justify-content:space-between;margin-top:18px;font-size:13px;color:var(--ink-400);}
.card-meta i{color:var(--brand-500);}
.pick-list{display:flex;flex-direction:column;gap:0;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-1);overflow:hidden;}
.pick-item{display:flex;gap:16px;padding:20px 24px;border-bottom:1px solid var(--line);transition:background .18s ease;}
.pick-item:last-child{border-bottom:0;}
.pick-item:hover{background:var(--bg-100);}
.pick-item .pick-thumb{flex:0 0 92px;width:92px;height:70px;border-radius:10px;overflow:hidden;background:var(--info-bg);}
.pick-item .pick-thumb img{width:100%;height:100%;object-fit:cover;}
.pick-item h4{font-size:16px;font-weight:600;margin-bottom:6px;line-height:1.5;}
.pick-item p{font-size:13px;color:var(--ink-400);margin:0;line-height:1.7;}
.pick-item .pick-index{
  flex:0 0 22px;font-size:13px;font-weight:700;color:var(--brand-500);
  font-variant-numeric:tabular-nums;padding-top:3px;
}

/* ---------- 信任背书 ---------- */
.trust{background:var(--bg-100);}
.logo-wall{
  display:grid;grid-template-columns:repeat(5,1fr);gap:14px;margin-bottom:56px;
}
.logo-cell{
  background:var(--surface);border:1px solid var(--line);border-radius:12px;
  height:76px;display:grid;place-items:center;text-align:center;
  font-size:14px;font-weight:600;color:var(--ink-400);filter:grayscale(1);
  transition:filter .2s ease,color .2s ease,box-shadow .2s ease;
}
.logo-cell:hover{filter:grayscale(0);color:var(--brand-700);box-shadow:var(--shadow-1);}
.stats-band{
  display:grid;grid-template-columns:repeat(4,1fr);
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);overflow:hidden;margin-bottom:56px;
}
.stat-cell{padding:28px 24px;border-right:1px solid var(--line);}
.stat-cell:last-child{border-right:0;}
.stat-cell .num{font-size:34px;font-weight:700;color:var(--brand-900);line-height:1.2;font-variant-numeric:tabular-nums;}
.stat-cell .num small{font-size:15px;font-weight:600;color:var(--brand-500);margin-left:3px;}
.stat-cell p{font-size:13px;color:var(--ink-400);margin:8px 0 0;}
.quote-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.quote-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:30px 30px 26px;box-shadow:var(--shadow-1);position:relative;
}
.quote-card::before{
  content:"\201C";position:absolute;top:10px;left:22px;
  font-size:56px;line-height:1;color:var(--info-bg);font-family:Georgia,serif;
}
.quote-card p{position:relative;font-size:16px;color:var(--ink-600);margin-bottom:20px;line-height:1.9;}
.quote-who{display:flex;align-items:center;gap:12px;border-top:1px solid var(--line);padding-top:16px;}
.quote-avatar{
  width:40px;height:40px;border-radius:50%;background:var(--info-bg);color:var(--brand-700);
  display:grid;place-items:center;font-size:14px;font-weight:700;
}
.quote-who strong{display:block;font-size:15px;color:var(--ink-900);}
.quote-who span{font-size:13px;color:var(--ink-400);}

/* ---------- 最新信息 ---------- */
.latest{background:var(--surface);border-top:1px solid var(--line);}
.latest-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;}
.news-grid{display:grid;grid-template-columns:1.02fr 1fr;gap:26px;align-items:start;}
.news-feature{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);overflow:hidden;transition:box-shadow .2s ease,transform .2s ease;
}
.news-feature:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);}
.news-feature img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.news-feature .card-body{padding:26px 28px 28px;}
.news-feature h3{font-size:22px;margin-bottom:12px;}
.news-feature p{font-size:15px;color:var(--ink-600);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-list{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-1);overflow:hidden;}
.news-item{border-bottom:1px solid var(--line);transition:background .18s ease;position:relative;}
.news-item:last-child{border-bottom:0;}
.news-item a{display:block;padding:18px 24px 18px 26px;}
.news-item a::before{
  content:"";position:absolute;left:0;top:20px;bottom:20px;width:3px;border-radius:0 3px 3px 0;
  background:var(--brand-500);opacity:0;transition:opacity .18s ease;
}
.news-item:hover{background:var(--bg-100);}
.news-item:hover a::before{opacity:1;}
.news-item h4{font-size:16px;font-weight:600;color:var(--ink-900);margin-bottom:6px;line-height:1.55;
  display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;}
.news-item p{font-size:13px;color:var(--ink-400);margin:0 0 8px;
  display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;}
.news-meta{display:flex;align-items:center;gap:12px;font-size:12px;color:var(--ink-400);}
.news-meta .tag{background:var(--info-bg);color:var(--brand-700);border-radius:999px;padding:2px 10px;font-weight:600;}
.empty-state{
  grid-column:1/-1;background:var(--bg-100);border:1px dashed var(--line);
  border-radius:var(--radius-card);padding:60px 24px;text-align:center;
}
.empty-state i{font-size:30px;color:var(--brand-500);margin-bottom:14px;display:block;}
.empty-state p{font-size:15px;color:var(--ink-400);margin-bottom:18px;}
.skeleton-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:22px;margin-bottom:14px;}
.sk-line{height:12px;border-radius:6px;background:linear-gradient(90deg,#EFEDE8 0%,#F7F6F2 50%,#EFEDE8 100%);background-size:220% 100%;animation:sk 1.4s ease-in-out infinite;margin-bottom:12px;}
.sk-line.w60{width:60%;}
.sk-line.w40{width:40%;}
@keyframes sk{0%{background-position:120% 0;}100%{background-position:-20% 0;}}

/* ---------- CTA 色块 ---------- */
.cta-band{
  position:relative;background:var(--brand-900);color:#fff;overflow:hidden;
  padding:88px 0;
}
.cta-band::before{
  content:"";position:absolute;inset:0;opacity:.06;
  background:repeating-linear-gradient(115deg,#fff 0 2px,transparent 2px 26px);
}
.cta-band .container{position:relative;z-index:2;}
.cta-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;}
.cta-grid h2{color:#fff;font-size:32px;margin-bottom:16px;}
.cta-grid p{color:rgba(255,255,255,.78);font-size:16px;}
.cta-form{display:flex;gap:12px;flex-wrap:wrap;}
.cta-form input{
  flex:1 1 240px;height:48px;border-radius:12px;border:1px solid rgba(255,255,255,.28);
  background:rgba(255,255,255,.08);color:#fff;padding:0 16px;outline:0;font-size:15px;
  transition:border-color .18s,box-shadow .18s,background .18s;
}
.cta-form input::placeholder{color:rgba(255,255,255,.55);}
.cta-form input:focus{border-color:var(--brand-500);background:rgba(255,255,255,.14);box-shadow:0 0 0 3px rgba(23,166,115,.24);}
.form-tip{font-size:13px;color:rgba(255,255,255,.6);margin-top:14px;width:100%;}
.form-tip.is-error{color:#FFBDA4;}
.form-tip.is-ok{color:#8FE3C1;}
.cta-list{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px;}
.cta-chip{
  font-size:13px;color:rgba(255,255,255,.78);
  border:1px solid rgba(255,255,255,.22);border-radius:999px;padding:5px 14px;
}

/* ---------- FAQ ---------- */
.faq{background:var(--bg-100);}
.faq-grid{display:grid;grid-template-columns:4fr 8fr;gap:52px;align-items:start;}
.faq-side h2{font-size:32px;margin-bottom:16px;}
.faq-side p{font-size:15px;color:var(--ink-600);}
.faq-side .btn{margin-top:22px;}
.faq-list{display:flex;flex-direction:column;gap:12px;}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:14px;
  overflow:hidden;transition:box-shadow .18s ease,border-color .18s ease;
}
.faq-item[open]{box-shadow:var(--shadow-1);border-color:#D7D3C9;}
.faq-item summary{
  list-style:none;cursor:pointer;padding:20px 56px 20px 24px;
  font-size:16px;font-weight:600;color:var(--ink-900);position:relative;
  transition:color .16s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";position:absolute;right:22px;top:50%;transform:translateY(-50%);
  font-size:20px;font-weight:400;color:var(--brand-500);line-height:1;
}
.faq-item[open] summary::after{content:"\2212";color:var(--accent-500);}
.faq-item summary:hover{color:var(--brand-700);}
.faq-body{
  position:relative;padding:0 24px 22px 24px;font-size:15px;color:var(--ink-600);
  line-height:1.9;animation:faqIn .16s ease;
}
.faq-body::before{
  content:"";position:absolute;left:0;top:2px;bottom:18px;width:3px;
  border-radius:0 3px 3px 0;background:var(--accent-500);
}
@keyframes faqIn{from{opacity:0;transform:translateY(-4px);}to{opacity:1;transform:none;}}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.7);padding:80px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:44px;padding-bottom:56px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:18px;}
.footer-brand .brand-mark{background:rgba(255,255,255,.14);box-shadow:none;}
.footer-brand span{font-size:17px;font-weight:700;color:#fff;}
.site-footer p{font-size:14px;line-height:1.9;color:rgba(255,255,255,.66);}
.site-footer h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:18px;}
.footer-links{display:grid;gap:11px;}
.footer-links a{font-size:14px;color:rgba(255,255,255,.7);}
.footer-links a:hover{color:var(--accent-500);}
.footer-contact li{font-size:14px;color:rgba(255,255,255,.7);display:flex;gap:10px;margin-bottom:12px;}
.footer-contact i{color:var(--brand-500);margin-top:5px;font-size:13px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14);padding:22px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.55);
}
.footer-bottom a{color:rgba(255,255,255,.7);}
.to-top{
  position:fixed;right:22px;bottom:26px;width:46px;height:46px;border-radius:14px;
  background:var(--surface);border:1px solid var(--line);color:var(--brand-700);
  display:grid;place-items:center;cursor:pointer;box-shadow:var(--shadow-1);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:all .22s ease;z-index:70;
}
.to-top.show{opacity:1;visibility:visible;transform:none;}
.to-top:hover{background:var(--info-bg);color:var(--brand-700);}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .nav-search{min-width:170px;}
}
@media (max-width:1023px){
  .nav-links,.nav-search{display:none;}
  .menu-toggle{display:grid;}
  .hero{padding:76px 0 66px;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero h1{font-size:38px;}
  .hero-media img{aspect-ratio:16/9;}
  .hero-float{position:static;margin-top:18px;max-width:none;}
  .claim-grid{grid-template-columns:1fr;gap:36px;}
  .story-row{grid-template-columns:1fr;gap:32px;}
  .story-row.reverse .story-media{order:-1;}
  .story-row + .story-row{margin-top:64px;}
  .picks-grid,.news-grid,.quote-grid,.cta-grid{grid-template-columns:1fr;}
  .faq-grid{grid-template-columns:1fr;gap:32px;}
  .logo-wall{grid-template-columns:repeat(3,1fr);}
  .stats-band{grid-template-columns:repeat(2,1fr);}
  .stat-cell:nth-child(2){border-right:0;}
  .stat-cell:nth-child(1),.stat-cell:nth-child(2){border-bottom:1px solid var(--line);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .section{padding:70px 0;}
  .section-title{font-size:27px;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .container{padding:0 18px;}
  .nav-bar{height:66px;gap:12px;}
  .brand-text{font-size:15px;white-space:normal;line-height:1.35;max-width:180px;}
  .hero h1{font-size:30px;}
  .hero-stats{grid-template-columns:repeat(2,1fr);gap:18px 12px;}
  .section-title{font-size:24px;}
  .card-title{font-size:19px;}
  .story-body h3{font-size:22px;}
  .cta-grid h2{font-size:25px;}
  .faq-side h2{font-size:25px;}
  .pick-item{flex-wrap:wrap;padding:18px 18px;}
  .pick-item .pick-thumb{flex:0 0 72px;width:72px;height:58px;}
  .footer-grid{grid-template-columns:1fr;}
  .section{padding:56px 0;}
}
@media (max-width:575px){
  .logo-wall{grid-template-columns:repeat(2,1fr);}
  .stats-band{grid-template-columns:1fr;}
  .stat-cell{border-right:0;border-bottom:1px solid var(--line);}
  .stat-cell:last-child{border-bottom:0;}
  .hero-cta .btn,.cta-form .btn{width:100%;}
  .story-facts{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

/* roulang page: article */
:root{
  --brand-900:#0C3B2E;
  --brand-700:#0E5B45;
  --brand-500:#17A673;
  --accent-600:#E8541F;
  --accent-500:#FF6A2B;
  --ink-900:#141A17;
  --ink-600:#4C564F;
  --ink-400:#7C877F;
  --bg-100:#F7F6F2;
  --surface:#FFFFFF;
  --line:#E4E1DA;
  --info-bg:#EEF5F1;
  --radius-lg:20px;
  --radius:16px;
  --radius-sm:12px;
  --shadow-1:0 1px 2px rgba(20,30,25,.06),0 14px 34px -14px rgba(20,30,25,.16);
  --shadow-2:0 2px 4px rgba(20,30,25,.08),0 22px 46px -16px rgba(20,30,25,.22);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans","Source Han Sans SC","Microsoft YaHei",sans-serif;
  font-size:17px;
  line-height:1.9;
  color:var(--ink-600);
  background:var(--bg-100);
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font:inherit;cursor:pointer;border:none;background:none;color:inherit;}
input{font:inherit;}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;line-height:1.35;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--accent-500);outline-offset:2px;}
::selection{background:rgba(23,166,115,.2);}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.num{font-variant-numeric:tabular-nums;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,246,242,.85);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:background .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.site-header.scrolled{background:rgba(255,255,255,.96);border-bottom-color:var(--line);box-shadow:0 10px 28px -20px rgba(20,30,25,.45);}
.header-inner{display:flex;align-items:center;gap:20px;min-height:72px;}
.brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:var(--ink-900);white-space:nowrap;}
.brand-mark{
  width:34px;height:34px;border-radius:10px;flex:none;
  background:linear-gradient(135deg,var(--brand-700),var(--brand-500));
  color:#fff;display:grid;place-items:center;font-size:16px;font-weight:700;
}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:6px;}
.nav-link{padding:9px 14px;border-radius:999px;font-size:15px;color:var(--ink-600);transition:background .18s ease,color .18s ease;}
.nav-link:hover{background:var(--info-bg);color:var(--brand-700);}
.nav-link.active{background:var(--info-bg);color:var(--brand-700);font-weight:600;}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px;}
.command-search{
  display:flex;align-items:center;gap:8px;height:42px;width:250px;
  padding:0 8px 0 14px;border:1px solid var(--line);border-radius:var(--radius-sm);
  background:var(--surface);transition:border-color .18s ease,box-shadow .18s ease;
}
.command-search:focus-within{border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(23,166,115,.15);}
.command-search i{color:var(--ink-400);font-size:14px;}
.command-search input{flex:1;min-width:0;height:100%;border:none;outline:none;background:transparent;font-size:14px;color:var(--ink-900);}
.command-search input::placeholder{color:var(--ink-400);}
.kbd{font-size:11px;color:var(--ink-400);border:1px solid var(--line);border-radius:6px;padding:2px 6px;background:var(--bg-100);white-space:nowrap;}
.icon-btn{
  width:42px;height:42px;border-radius:var(--radius-sm);display:grid;place-items:center;
  border:1px solid var(--line);background:var(--surface);color:var(--ink-600);
  transition:color .18s ease,border-color .18s ease,background .18s ease;
}
.icon-btn:hover{color:var(--brand-700);border-color:var(--brand-500);background:var(--info-bg);}
.hamburger{display:none;width:42px;height:42px;border-radius:var(--radius-sm);border:1px solid var(--line);background:var(--surface);flex-direction:column;align-items:center;justify-content:center;gap:4px;}
.hamburger span{display:block;width:18px;height:2px;background:var(--ink-900);border-radius:2px;transition:.2s;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;white-space:nowrap;
  transition:transform .16s ease,background .2s ease,box-shadow .2s ease,color .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--accent-500);color:#fff;box-shadow:0 12px 26px -14px rgba(255,106,43,.85);}
.btn-primary:hover{background:var(--accent-600);transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{border:1.5px solid var(--brand-700);color:var(--brand-700);background:transparent;}
.btn-ghost:hover{background:var(--info-bg);}
.btn-ghost:active{transform:translateY(1px);}
.btn-sm{height:40px;padding:0 16px;font-size:14px;}
.btn:disabled{opacity:.5;cursor:not-allowed;transform:none;}

/* ---------- breadcrumb + article hero ---------- */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:26px 0 0;font-size:13px;color:var(--ink-400);}
.breadcrumb a{color:var(--ink-600);transition:color .18s ease;}
.breadcrumb a:hover{color:var(--brand-500);}
.breadcrumb .sep{color:var(--ink-400);}
.breadcrumb .current{color:var(--ink-400);}

.article-hero{
  position:relative;margin-top:18px;min-height:340px;border-radius:var(--radius-lg);
  overflow:hidden;display:flex;align-items:flex-end;box-shadow:var(--shadow-1);
}
.article-hero img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;}
.article-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(12,59,46,.30),rgba(12,59,46,.86));}
.article-hero-inner{position:relative;z-index:2;padding:42px 46px;max-width:880px;}
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:999px;
  font-size:13px;font-weight:600;background:var(--info-bg);color:var(--brand-700);
}
.badge-light{background:rgba(255,255,255,.16);color:#fff;border:1px solid rgba(255,255,255,.3);}
.article-hero h1{color:#fff;font-size:42px;line-height:1.32;margin:16px 0 18px;}
.article-meta{display:flex;flex-wrap:wrap;gap:20px;font-size:14px;color:rgba(255,255,255,.84);}
.article-meta i{margin-right:6px;}

/* ---------- layout ---------- */
.article-section{padding:52px 0 88px;}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:32px;justify-content:center;}
.article-body-wrap{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:46px 48px;box-shadow:var(--shadow-1);max-width:800px;
}
.article-body{font-size:17px;line-height:1.9;color:var(--ink-600);}
.article-body > p:first-of-type{font-size:18px;color:var(--ink-900);}
.article-body p{margin:1.1em 0;}
.article-body h2{
  position:relative;font-size:27px;margin:2.2em 0 .8em;padding-left:16px;line-height:1.4;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:3px;border-radius:2px;background:var(--brand-700);
}
.article-body h3{font-size:20px;font-weight:600;margin:1.7em 0 .6em;}
.article-body h4{font-size:17px;font-weight:600;margin:1.4em 0 .5em;}
.article-body ul,.article-body ol{margin:1.1em 0;padding-left:1.3em;}
.article-body ul{list-style:disc;}
.article-body ol{list-style:decimal;}
.article-body li{margin:.5em 0;}
.article-body li::marker{color:var(--brand-500);}
.article-body blockquote{
  margin:1.6em 0;padding:16px 22px;background:var(--info-bg);
  border-left:3px solid var(--brand-700);border-radius:0 var(--radius-sm) var(--radius-sm) 0;color:var(--ink-900);
}
.article-body blockquote p{margin:.4em 0;}
.article-body img{width:100%;height:auto;border-radius:var(--radius-sm);margin:1.5em 0;}
.article-body figure{margin:1.7em 0;}
.article-body figcaption{font-size:13px;color:var(--ink-400);text-align:center;margin-top:8px;}
.article-body table{width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15px;border:1px solid var(--line);border-radius:var(--radius-sm);overflow:hidden;}
.article-body th{background:var(--info-bg);color:var(--brand-900);font-weight:600;text-align:left;}
.article-body th,.article-body td{padding:12px 14px;border-bottom:1px solid var(--line);}
.article-body tbody tr:nth-child(even){background:#FBFAF7;}
.article-body a{color:var(--brand-500);text-decoration:underline;text-underline-offset:3px;transition:color .18s ease;}
.article-body a:hover{color:var(--accent-500);}
.article-body hr{border:none;border-top:1px solid var(--line);margin:2.2em 0;}

.article-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:36px;padding-top:24px;border-top:1px solid var(--line);}
.tag{
  display:inline-flex;align-items:center;padding:6px 14px;border-radius:999px;
  font-size:13px;color:var(--ink-600);background:var(--bg-100);border:1px solid var(--line);
  transition:color .18s ease,border-color .18s ease,background .18s ease;
}
.tag:hover{color:var(--brand-700);border-color:var(--brand-500);background:var(--info-bg);}

/* ---------- aside ---------- */
.article-aside{display:none;}
.aside-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:22px;box-shadow:var(--shadow-1);margin-bottom:20px;
}
.aside-card h3{font-size:16px;margin-bottom:12px;}
.hot-list li{border-bottom:1px solid var(--line);}
.hot-list li:last-child{border-bottom:none;}
.hot-list a{display:flex;gap:10px;padding:11px 0;font-size:14px;line-height:1.6;color:var(--ink-600);transition:color .18s ease;}
.hot-list a:hover{color:var(--brand-700);}
.hot-list .num{color:var(--accent-500);font-weight:600;font-size:13px;flex:none;}
.aside-card-help{background:var(--brand-900);border-color:var(--brand-900);}
.aside-card-help h3{color:#fff;}
.aside-card-help p{font-size:14px;color:rgba(255,255,255,.78);margin-bottom:16px;line-height:1.8;}
.aside-card-help .btn-ghost{border-color:rgba(255,255,255,.5);color:#fff;}
.aside-card-help .btn-ghost:hover{background:rgba(255,255,255,.12);}

/* ---------- empty state ---------- */
.empty-state{
  display:flex;flex-direction:column;align-items:center;gap:14px;padding:72px 24px;text-align:center;
  background:var(--surface);border:1px dashed var(--line);border-radius:var(--radius-lg);
}
.empty-state i{font-size:34px;color:var(--ink-400);}
.empty-state p{font-size:16px;color:var(--ink-600);}

/* ---------- continue reading ---------- */
.block{padding:0 0 84px;}
.block-head{max-width:720px;margin-bottom:32px;}
.block-head .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--brand-700);margin-bottom:10px;}
.block-head .eyebrow::before{content:"";width:3px;height:14px;border-radius:2px;background:var(--accent-500);}
.block-head h2{font-size:32px;}
.block-head p{margin-top:12px;font-size:16px;color:var(--ink-600);}

.read-next{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.next-card{
  display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.next-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#D8D4CB;}
.next-card .thumb{aspect-ratio:16/9;overflow:hidden;}
.next-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .2s ease;}
.next-card:hover .thumb img{transform:scale(1.03);}
.next-card-body{padding:20px;display:flex;flex-direction:column;gap:10px;}
.next-card-body h3{font-size:18px;line-height:1.55;}
.next-card-body p{font-size:14px;color:var(--ink-600);line-height:1.75;}
.arrow-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand-700);}
.arrow-link i{transition:transform .18s ease;}
.arrow-link:hover i{transform:translateX(3px);}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:14px;max-width:900px;}
.faq-item{background:var(--surface);border:1px solid var(--line);border-radius:14px;overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;}
.faq-item:hover{border-color:#D8D4CB;}
.faq-item[open]{box-shadow:var(--shadow-1);}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;font-size:16px;font-weight:600;color:var(--ink-900);
  transition:background .18s ease,border-color .18s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{content:"+";font-size:20px;font-weight:500;color:var(--accent-500);line-height:1;}
.faq-item[open] summary{background:var(--info-bg);border-left:3px solid var(--accent-500);padding-left:19px;}
.faq-item[open] summary::after{content:"–";}
.faq-item p{padding:14px 22px 20px;font-size:15px;line-height:1.85;color:var(--ink-600);}

/* ---------- CTA band ---------- */
.cta-band{background:var(--brand-900);padding:64px 0;}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap;}
.cta-inner h2{color:#fff;font-size:28px;}
.cta-inner p{color:rgba(255,255,255,.76);margin-top:10px;font-size:15px;max-width:520px;}
.cta-form{display:flex;gap:12px;flex-wrap:wrap;}
.cta-form input{
  height:48px;width:280px;padding:0 16px;border-radius:var(--radius-sm);
  border:1px solid rgba(255,255,255,.25);background:rgba(255,255,255,.08);color:#fff;font-size:15px;outline:none;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.cta-form input::placeholder{color:rgba(255,255,255,.5);}
.cta-form input:focus{border-color:var(--accent-500);box-shadow:0 0 0 3px rgba(255,106,43,.24);}

/* ---------- footer ---------- */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.7);padding:64px 0 26px;font-size:14px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.14);}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:#fff;margin-bottom:14px;}
.footer-brand .brand-mark{background:rgba(255,255,255,.14);}
.site-footer p{line-height:1.85;}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:16px;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{transition:color .18s ease;}
.footer-links a:hover{color:var(--accent-500);}
.footer-contact{display:flex;flex-direction:column;gap:12px;}
.footer-contact i{margin-right:8px;color:var(--brand-500);}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;padding-top:22px;font-size:13px;color:rgba(255,255,255,.55);}
.footer-bottom a{color:rgba(255,255,255,.75);transition:color .18s ease;}
.footer-bottom a:hover{color:var(--accent-500);}

/* ---------- drawer ---------- */
.drawer-overlay{position:fixed;inset:0;background:rgba(0,0,0,.4);opacity:0;pointer-events:none;transition:opacity .25s ease;z-index:80;}
.drawer-overlay.show{opacity:1;pointer-events:auto;}
.mobile-drawer{
  position:fixed;top:0;right:0;height:100%;width:min(86vw,340px);z-index:90;
  background:var(--surface);padding:24px;display:none;flex-direction:column;gap:6px;
  transform:translateX(102%);transition:transform .28s ease;box-shadow:-24px 0 48px -24px rgba(0,0,0,.35);overflow-y:auto;
}
.mobile-drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px;}
.drawer-head strong{font-size:16px;color:var(--ink-900);}
.drawer-close{width:36px;height:36px;border-radius:10px;border:1px solid var(--line);display:grid;place-items:center;color:var(--ink-600);}
.drawer-link{padding:14px 12px;border-radius:var(--radius-sm);font-size:15px;color:var(--ink-600);border-bottom:1px solid var(--line);}
.drawer-link:hover{background:var(--info-bg);color:var(--brand-700);}
.drawer-cta{margin-top:18px;}

/* ---------- skeleton ---------- */
.skeleton{background:linear-gradient(90deg,#EFEDE7 25%,#F7F6F2 37%,#EFEDE7 63%);background-size:400% 100%;animation:sk 1.4s ease infinite;border-radius:8px;}
@keyframes sk{0%{background-position:100% 50%;}100%{background-position:0 50%;}}

/* ---------- responsive ---------- */
@media (min-width:1280px){
  .article-layout{grid-template-columns:minmax(0,800px) 300px;gap:48px;}
  .article-aside{display:block;position:sticky;top:96px;align-self:start;}
}
@media (max-width:1279px){
  .article-body-wrap{max-width:none;margin:0 auto;}
}
@media (max-width:1023px){
  .nav-links,.command-search,.header-actions .btn{display:none;}
  .hamburger{display:flex;}
  .mobile-drawer{display:flex;}
  .article-hero h1{font-size:34px;}
  .read-next{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .container{padding:0 18px;}
  .article-hero{min-height:270px;border-radius:var(--radius);}
  .article-hero-inner{padding:26px 22px;}
  .article-hero h1{font-size:26px;margin:12px 0 14px;}
  .article-meta{gap:12px;font-size:13px;}
  .article-section{padding:34px 0 64px;}
  .article-body-wrap{padding:26px 20px;border-radius:var(--radius);}
  .article-body h2{font-size:22px;}
  .article-body h3{font-size:18px;}
  .read-next{grid-template-columns:minmax(0,1fr);}
  .block{padding:0 0 60px;}
  .block-head h2{font-size:24px;}
  .cta-inner h2{font-size:22px;}
  .cta-form input{width:100%;}
  .cta-form .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:520px){
  .brand-text{font-size:15px;}
  .breadcrumb{font-size:12px;}
  .article-hero h1{font-size:22px;}
  .btn{height:44px;}
}

/* roulang page: category1 */
:root{
  --brand-900:#0C3B2E;
  --brand-700:#0E5B45;
  --brand-500:#17A673;
  --accent-600:#E8541F;
  --accent-500:#FF6A2B;
  --ink-900:#141A17;
  --ink-600:#4C564F;
  --ink-400:#7C877F;
  --bg-100:#F7F6F2;
  --surface:#FFFFFF;
  --line:#E4E1DA;
  --info-bg:#EEF5F1;
  --radius-lg:16px;
  --radius-md:12px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(20,30,25,.06), 0 14px 34px -14px rgba(20,30,25,.16);
  --shadow-2:0 2px 4px rgba(20,30,25,.08), 0 22px 46px -16px rgba(20,30,25,.22);
  --container:1200px;
  --gap:24px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-100);
  color:var(--ink-600);
  font-family:"PingFang SC","HarmonyOS Sans","Source Han Sans SC","Microsoft YaHei",sans-serif;
  font-size:17px;
  line-height:1.9;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--radius-md);}
a{color:var(--brand-500);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--accent-600);}
h1,h2,h3,h4{color:var(--ink-900);margin:0;font-weight:700;line-height:1.35;}
h3{font-weight:600;font-size:21px;}
p{margin:0 0 1.2em;}
ul,ol{margin:0;padding:0;list-style:none;}
button,input{font-family:inherit;font-size:inherit;}
button{cursor:pointer;}
:focus-visible{outline:2px solid var(--accent-500);outline-offset:2px;border-radius:6px;}
.num{font-variant-numeric:tabular-nums;}

.container{max-width:var(--container);margin:0 auto;padding:0 24px;}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.96);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .22s ease;
}
.site-header.is-scrolled{box-shadow:0 10px 28px -18px rgba(20,30,25,.4);}
.nav-inner{display:flex;align-items:center;gap:28px;height:72px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:36px;height:36px;border-radius:11px;
  background:linear-gradient(140deg,var(--brand-700),var(--brand-500));
  color:#fff;display:grid;place-items:center;
  font-weight:700;font-size:17px;letter-spacing:.02em;
}
.brand-text{color:var(--ink-900);font-weight:700;font-size:17px;white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:4px;margin-right:auto;}
.nav-link{
  display:inline-flex;align-items:center;height:38px;padding:0 14px;
  border-radius:var(--radius-pill);
  color:var(--ink-600);font-size:15px;font-weight:500;
  transition:background .18s ease,color .18s ease;
}
.nav-link:hover{background:var(--info-bg);color:var(--brand-700);}
.nav-link.active{background:#E3F1EA;color:var(--brand-700);font-weight:600;}
.nav-actions{display:flex;align-items:center;gap:12px;}
.command-search{
  display:flex;align-items:center;gap:8px;
  height:42px;padding:0 12px;min-width:230px;
  background:var(--bg-100);
  border:1px solid var(--line);border-radius:var(--radius-md);
  transition:border-color .18s ease,box-shadow .18s ease;
}
.command-search:focus-within{border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(23,166,115,.14);}
.command-search i{color:var(--ink-400);font-size:13px;}
.command-search input{
  border:0;background:transparent;outline:none;flex:1;
  color:var(--ink-900);font-size:14px;min-width:0;
}
.command-search input::placeholder{color:var(--ink-400);}
.kbd{
  font-size:11px;color:var(--ink-400);background:#fff;
  border:1px solid var(--line);border-radius:6px;padding:1px 6px;
  font-variant-numeric:tabular-nums;white-space:nowrap;
}
.icon-btn{
  width:42px;height:42px;display:grid;place-items:center;
  border-radius:var(--radius-md);border:1px solid var(--line);
  background:#fff;color:var(--ink-600);transition:all .18s ease;
}
.icon-btn:hover{border-color:var(--brand-500);color:var(--brand-700);background:var(--info-bg);}
.menu-btn{display:none;width:42px;height:42px;border-radius:var(--radius-md);border:1px solid var(--line);background:#fff;color:var(--ink-900);}

/* ---------- Buttons ---------- */
.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:all .18s ease;white-space:nowrap;
}
.btn-primary{background:var(--accent-500);color:#fff;box-shadow:0 10px 24px -12px rgba(255,106,43,.8);}
.btn-primary:hover{background:var(--accent-600);color:#fff;transform:translateY(-1px);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{background:transparent;color:var(--brand-700);border-color:var(--brand-700);}
.btn-ghost:hover{background:var(--info-bg);color:var(--brand-700);}
.btn-sm{height:42px;padding:0 18px;font-size:14px;}
.btn-text{
  background:none;border:0;padding:0;color:var(--brand-700);
  font-weight:600;display:inline-flex;align-items:center;gap:6px;height:auto;
}
.btn-text i{transition:transform .18s ease;}
.btn-text:hover{color:var(--accent-600);}
.btn-text:hover i{transform:translateX(3px);}
.btn[disabled],.btn.is-disabled{opacity:.5;pointer-events:none;}

/* ---------- Mobile drawer ---------- */
.mask{
  position:fixed;inset:0;background:rgba(20,26,23,.4);
  opacity:0;visibility:hidden;transition:opacity .22s ease;z-index:70;
}
.mask.show{opacity:1;visibility:visible;}
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;width:290px;z-index:80;
  background:#fff;box-shadow:-20px 0 50px -24px rgba(20,30,25,.5);
  transform:translateX(100%);transition:transform .26s ease;
  padding:22px 20px;display:flex;flex-direction:column;gap:8px;
}
.mobile-drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px;}
.drawer-link{
  display:block;padding:13px 14px;border-radius:var(--radius-md);
  color:var(--ink-900);font-weight:500;font-size:16px;border:1px solid transparent;
}
.drawer-link:hover{background:var(--bg-100);}
.drawer-link.active{background:var(--info-bg);color:var(--brand-700);border-color:#CFE6DA;font-weight:600;}
.drawer-cta{margin-top:auto;}

/* ---------- Page hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  background:linear-gradient(180deg,#FFFFFF 0%,var(--bg-100) 100%);
  border-bottom:1px solid var(--line);
  padding:64px 0 60px;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background-image:repeating-linear-gradient(115deg,rgba(14,91,69,.045) 0 2px,transparent 2px 16px);
  pointer-events:none;
}
.hero-grid{
  position:relative;z-index:1;
  display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--info-bg);color:var(--brand-700);
  border-radius:var(--radius-pill);padding:6px 14px;
  font-size:13px;font-weight:600;margin-bottom:18px;
}
.eyebrow i{font-size:12px;}
.page-hero h1{font-size:44px;line-height:1.32;margin-bottom:20px;}
.page-hero .lead{font-size:17px;color:var(--ink-600);max-width:600px;margin-bottom:26px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;}
.hero-figure{position:relative;}
.hero-figure img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:var(--radius-lg);box-shadow:var(--shadow-1);
  border:1px solid var(--line);
}
.hero-figure figcaption{
  font-size:13px;color:var(--ink-400);margin-top:10px;text-align:right;
}
.crumb{font-size:13px;color:var(--ink-400);margin-bottom:18px;}
.crumb a{color:var(--ink-400);}
.crumb a:hover{color:var(--brand-700);}
.crumb span.sep{margin:0 6px;}

/* ---------- Doc layout ---------- */
.section{padding:84px 0;}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head h2{font-size:32px;margin-bottom:14px;}
.section-head p{font-size:16px;color:var(--ink-600);margin:0;}
.rule-title{
  display:inline-flex;align-items:center;gap:10px;
  font-size:13px;font-weight:600;color:var(--brand-700);margin-bottom:12px;
}
.rule-title::before{content:"";width:3px;height:14px;background:var(--brand-700);border-radius:2px;}

.doc-layout{display:grid;grid-template-columns:264px 1fr;gap:56px;align-items:start;}
.doc-aside{position:sticky;top:96px;}
.anchor-nav{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-lg);padding:20px;box-shadow:var(--shadow-1);
}
.anchor-title{
  font-size:13px;font-weight:600;color:var(--ink-400);
  letter-spacing:.04em;margin-bottom:12px;
}
.anchor-list a{
  display:flex;align-items:center;gap:10px;
  padding:9px 10px;border-radius:10px;
  color:var(--ink-600);font-size:14.5px;border-left:2px solid transparent;
}
.anchor-list a:hover{background:var(--bg-100);color:var(--brand-700);}
.anchor-list a.active{
  background:var(--info-bg);color:var(--brand-700);font-weight:600;
  border-left-color:var(--accent-500);
}
.anchor-list .idx{
  font-size:12px;color:var(--ink-400);font-variant-numeric:tabular-nums;
  min-width:18px;
}
.anchor-note{
  margin-top:16px;padding-top:16px;border-top:1px dashed var(--line);
  font-size:13px;color:var(--ink-400);line-height:1.75;
}

.doc-body{display:flex;flex-direction:column;gap:56px;}
.doc-section{scroll-margin-top:100px;}
.doc-section > h2{font-size:27px;margin-bottom:8px;}
.doc-section .sub{font-size:14px;color:var(--ink-400);margin-bottom:20px;}
.doc-section p{font-size:16.5px;line-height:1.95;}

/* ---------- Steps ---------- */
.steps{position:relative;margin-top:8px;}
.steps::before{
  content:"";position:absolute;left:17px;top:12px;bottom:12px;width:2px;
  background:linear-gradient(180deg,var(--brand-500),var(--line));
}
.step{position:relative;padding-left:52px;padding-bottom:26px;}
.step:last-child{padding-bottom:0;}
.step-num{
  position:absolute;left:0;top:2px;width:36px;height:36px;
  border-radius:50%;background:var(--brand-700);color:#fff;
  display:grid;place-items:center;font-size:14px;font-weight:600;
  font-variant-numeric:tabular-nums;box-shadow:0 8px 18px -10px rgba(12,59,46,.9);
}
.step h3{font-size:18px;margin-bottom:6px;}
.step p{font-size:15.5px;margin-bottom:10px;color:var(--ink-600);}
.step .hint{
  display:flex;gap:10px;align-items:flex-start;
  background:var(--info-bg);border-radius:var(--radius-md);
  padding:12px 14px;font-size:14px;color:var(--brand-700);line-height:1.8;
}
.step .hint i{margin-top:4px;font-size:13px;}

/* ---------- Info list ---------- */
.info-list{margin-top:6px;}
.info-item{
  display:flex;align-items:flex-start;gap:14px;
  padding:16px 2px;border-bottom:1px solid var(--line);
  transition:background .18s ease;
}
.info-item:hover{background:var(--bg-100);}
.info-item .bar{width:3px;height:20px;border-radius:2px;background:var(--brand-500);margin-top:6px;flex:none;}
.info-item h4{font-size:16.5px;font-weight:600;margin-bottom:4px;}
.info-item p{font-size:14.5px;margin:0;color:var(--ink-600);line-height:1.8;}

/* ---------- Split media ---------- */
.split{
  display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-lg);padding:36px;box-shadow:var(--shadow-1);
}
.split img{aspect-ratio:4/3;object-fit:cover;width:100%;transition:transform .2s ease;}
.split figure{overflow:hidden;border-radius:var(--radius-md);margin:0;}
.split figure:hover img{transform:scale(1.03);}
.split h3{font-size:22px;margin-bottom:12px;}
.split p{font-size:15.5px;margin-bottom:14px;}
.check-list li{
  display:flex;gap:10px;align-items:flex-start;
  font-size:15px;color:var(--ink-600);padding:6px 0;
}
.check-list i{color:var(--brand-500);margin-top:6px;font-size:13px;}

/* ---------- Stat band ---------- */
.stat-band{
  display:grid;grid-template-columns:repeat(4,1fr);
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-1);
  margin-top:8px;
}
.stat-item{padding:26px 22px;border-right:1px solid var(--line);}
.stat-item:last-child{border-right:0;}
.stat-num{
  font-size:32px;font-weight:700;color:var(--brand-700);
  font-variant-numeric:tabular-nums;line-height:1.2;
}
.stat-num span{font-size:15px;font-weight:600;color:var(--ink-400);margin-left:2px;}
.stat-label{font-size:13.5px;color:var(--ink-400);margin-top:6px;}

/* ---------- Issue rows ---------- */
.issue-row{
  display:grid;grid-template-columns:1.1fr 1.7fr auto;gap:20px;
  align-items:center;padding:18px 20px;
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-md);margin-bottom:12px;
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.issue-row:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#D6E6DD;}
.issue-row h4{font-size:15.5px;font-weight:600;margin:0;}
.issue-row p{font-size:14px;margin:0;color:var(--ink-600);line-height:1.75;}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12.5px;font-weight:600;padding:5px 12px;
  border-radius:var(--radius-pill);white-space:nowrap;
}
.badge-ok{background:var(--info-bg);color:var(--brand-700);}
.badge-warn{background:#FFF1E8;color:var(--accent-600);}
.badge-neutral{background:#F1F0EC;color:var(--ink-600);}

/* ---------- FAQ ---------- */
.faq-wrap{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start;}
.faq-side h2{font-size:30px;margin-bottom:14px;}
.faq-side p{font-size:15.5px;color:var(--ink-600);}
.faq-item{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-md);margin-bottom:12px;overflow:hidden;
  transition:box-shadow .18s ease,border-color .18s ease;
}
.faq-item:hover{border-color:#D6E6DD;}
.faq-item.open{box-shadow:var(--shadow-1);border-color:#CFE6DA;}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:none;border:0;text-align:left;
  padding:18px 20px;font-size:16px;font-weight:600;color:var(--ink-900);
}
.faq-q .mark{
  flex:none;width:26px;height:26px;border-radius:8px;
  background:var(--info-bg);color:var(--brand-700);
  display:grid;place-items:center;font-size:14px;transition:all .16s ease;
}
.faq-item.open .faq-q .mark{background:var(--accent-500);color:#fff;transform:rotate(45deg);}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .18s ease;
}
.faq-item.open .faq-a{max-height:400px;}
.faq-a-inner{
  padding:0 20px 20px 20px;font-size:15px;color:var(--ink-600);
  border-left:3px solid var(--accent-500);margin-left:0;line-height:1.85;
}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;background:var(--brand-900);
  border-radius:var(--radius-lg);padding:56px;color:#fff;
  display:grid;grid-template-columns:1.1fr .9fr;gap:44px;align-items:center;
}
.cta-band::after{
  content:"";position:absolute;inset:0;
  background-image:repeating-linear-gradient(115deg,rgba(255,255,255,.05) 0 2px,transparent 2px 18px);
}
.cta-band > *{position:relative;z-index:1;}
.cta-band h2{color:#fff;font-size:30px;margin-bottom:14px;}
.cta-band p{color:rgba(255,255,255,.72);font-size:15.5px;margin:0;}
.cta-form{display:flex;flex-direction:column;gap:12px;}
.field-row{display:flex;gap:12px;}
.field-row input{
  flex:1;height:48px;padding:0 16px;border-radius:var(--radius-md);
  border:1px solid rgba(255,255,255,.24);background:rgba(255,255,255,.08);
  color:#fff;outline:none;transition:all .18s ease;min-width:0;
}
.field-row input::placeholder{color:rgba(255,255,255,.5);}
.field-row input:focus{border-color:var(--accent-500);box-shadow:0 0 0 3px rgba(255,106,43,.24);}
.form-tip{font-size:13px;color:rgba(255,255,255,.55);}
.form-tip.err{color:#FFB594;}

/* ---------- Related ---------- */
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.related-card{
  display:block;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-lg);padding:24px;box-shadow:var(--shadow-1);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.related-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#D6E6DD;color:inherit;}
.related-card .tag{
  display:inline-block;font-size:12.5px;font-weight:600;
  background:var(--info-bg);color:var(--brand-700);
  border-radius:var(--radius-pill);padding:4px 12px;margin-bottom:14px;
}
.related-card h3{font-size:18px;margin-bottom:10px;}
.related-card p{font-size:14px;color:var(--ink-600);margin-bottom:14px;}
.related-card .go{
  font-size:14px;font-weight:600;color:var(--brand-700);
  display:inline-flex;align-items:center;gap:6px;
}
.related-card:hover .go{color:var(--accent-600);}
.related-card .go i{transition:transform .18s ease;}
.related-card:hover .go i{transform:translateX(3px);}

/* ---------- Footer ---------- */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.72);margin-top:96px;padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:17px;margin-bottom:14px;}
.footer-brand .brand-mark{background:linear-gradient(140deg,#17A673,#0E5B45);}
.site-footer p{font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.62);margin:0;}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:16px;font-weight:600;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{color:rgba(255,255,255,.68);font-size:14.5px;}
.footer-links a:hover{color:var(--accent-500);}
.footer-contact{display:flex;flex-direction:column;gap:10px;font-size:14.5px;}
.footer-contact li{display:flex;align-items:flex-start;gap:10px;color:rgba(255,255,255,.68);}
.footer-contact i{margin-top:5px;font-size:13px;color:var(--brand-500);}
.footer-bottom{
  margin-top:48px;border-top:1px solid rgba(255,255,255,.14);
  padding:22px 0;display:flex;justify-content:space-between;align-items:center;gap:16px;
  font-size:13.5px;color:rgba(255,255,255,.5);flex-wrap:wrap;
}
.footer-bottom a{color:rgba(255,255,255,.7);}
.footer-bottom a:hover{color:var(--accent-500);}

.to-top{
  position:fixed;right:22px;bottom:22px;z-index:50;
  width:46px;height:46px;border-radius:var(--radius-md);
  background:var(--brand-700);color:#fff;border:0;
  display:grid;place-items:center;box-shadow:var(--shadow-2);
  opacity:0;visibility:hidden;transition:all .22s ease;
}
.to-top.show{opacity:1;visibility:visible;}
.to-top:hover{background:var(--accent-500);}

/* ---------- Responsive ---------- */
@media (max-width:1279px){
  .command-search{min-width:180px;}
}
@media (max-width:1023px){
  .nav-links,.command-search{display:none;}
  .menu-btn{display:grid;place-items:center;}
  .nav-inner{gap:16px;}
  .brand-text{font-size:16px;}
  .hero-grid{grid-template-columns:1fr;gap:32px;}
  .page-hero{padding:48px 0;}
  .page-hero h1{font-size:34px;}
  .doc-layout{grid-template-columns:1fr;gap:32px;}
  .doc-aside{position:static;}
  .anchor-nav{display:flex;flex-wrap:wrap;gap:8px;align-items:center;padding:14px;}
  .anchor-title{width:100%;margin-bottom:4px;}
  .anchor-list{display:flex;flex-wrap:wrap;gap:8px;}
  .anchor-list a{border-left:0;border:1px solid var(--line);border-radius:var(--radius-pill);padding:7px 14px;}
  .anchor-list a.active{border-color:#CFE6DA;}
  .anchor-note{display:none;}
  .faq-wrap{grid-template-columns:1fr;gap:28px;}
  .split{grid-template-columns:1fr;gap:28px;padding:26px;}
  .cta-band{grid-template-columns:1fr;gap:28px;padding:40px;}
  .related-grid{grid-template-columns:1fr 1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .stat-band{grid-template-columns:1fr 1fr;}
  .stat-item:nth-child(2){border-right:0;}
  .stat-item:nth-child(1),.stat-item:nth-child(2){border-bottom:1px solid var(--line);}
}
@media (max-width:767px){
  body{font-size:16px;}
  .container{padding:0 18px;}
  .section{padding:56px 0;}
  .section-head h2{font-size:24px;}
  .page-hero h1{font-size:29px;}
  .page-hero .lead{font-size:16px;}
  .doc-section > h2{font-size:23px;}
  .split h3{font-size:20px;}
  .cta-band h2{font-size:24px;}
  .field-row{flex-direction:column;}
  .field-row .btn{width:100%;}
  .issue-row{grid-template-columns:1fr;gap:10px;align-items:flex-start;}
  .related-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .site-footer{margin-top:64px;}
  .btn{width:100%;}
  .hero-actions .btn{width:100%;}
  .icon-btn{display:none;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:575px){
  .brand-text{font-size:15px;max-width:150px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
  .page-hero h1{font-size:26px;}
  .stat-band{grid-template-columns:1fr;}
  .stat-item{border-right:0;border-bottom:1px solid var(--line);}
  .stat-item:last-child{border-bottom:0;}
  .anchor-list a{font-size:13.5px;padding:6px 12px;}
  .mobile-drawer{width:84vw;}
}

/* roulang page: category2 */
:root{
  --brand-900:#0C3B2E;
  --brand-700:#0E5B45;
  --brand-500:#17A673;
  --accent-600:#E8541F;
  --accent-500:#FF6A2B;
  --ink-900:#141A17;
  --ink-600:#4C564F;
  --ink-400:#7C877F;
  --bg-100:#F7F6F2;
  --surface:#FFFFFF;
  --line:#E4E1DA;
  --info-bg:#EEF5F1;
  --radius-card:16px;
  --radius-btn:12px;
  --shadow-1:0 1px 2px rgba(20,30,25,.06), 0 14px 34px -14px rgba(20,30,25,.16);
  --shadow-2:0 2px 4px rgba(20,30,25,.08), 0 22px 46px -16px rgba(20,30,25,.22);
  --container:1200px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans","Source Han Sans SC","Microsoft YaHei",sans-serif;
  font-size:17px;
  line-height:1.9;
  color:var(--ink-600);
  background:var(--bg-100);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand-500);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--accent-500);}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;line-height:1.35;}
h3{font-weight:600;}
p{margin:0 0 1.1em;}
ul,ol{margin:0;padding:0;list-style:none;}
button,input{font-family:inherit;font-size:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
:focus-visible{outline:2px solid var(--accent-500);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.96);
  backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease;
}
.site-header.scrolled{box-shadow:0 8px 26px -18px rgba(20,30,25,.4);}
.header-inner{display:flex;align-items:center;gap:20px;height:72px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--ink-900);}
.brand:hover{color:var(--brand-700);}
.brand-mark{
  width:36px;height:36px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand-700),var(--brand-500));
  color:#fff;font-weight:700;font-size:17px;letter-spacing:0;
}
.brand-text{font-size:17px;font-weight:700;white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:8px;}
.nav-link{
  position:relative;display:inline-block;
  padding:9px 14px;border-radius:999px;
  font-size:15px;color:var(--ink-600);white-space:nowrap;
}
.nav-link:hover{background:var(--info-bg);color:var(--brand-700);}
.nav-link.active{color:var(--brand-700);font-weight:600;background:var(--info-bg);}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  background:var(--brand-700);border-radius:2px;
}
.header-tools{display:flex;align-items:center;gap:12px;margin-left:auto;}
.command-search{
  display:flex;align-items:center;gap:8px;
  height:42px;padding:0 10px 0 14px;
  background:var(--bg-100);
  border:1px solid var(--line);border-radius:12px;
  min-width:230px;
  transition:border-color .18s ease,background .18s ease;
}
.command-search i{color:var(--ink-400);font-size:14px;}
.command-search input{
  flex:1;border:0;background:transparent;outline:none;font-size:14px;color:var(--ink-900);
  min-width:0;
}
.command-search input::placeholder{color:var(--ink-400);}
.command-search:focus-within{border-color:var(--brand-500);background:#fff;box-shadow:0 0 0 3px rgba(23,166,115,.14);}
.kbd{
  font-size:11px;color:var(--ink-400);background:#fff;border:1px solid var(--line);
  border-radius:6px;padding:1px 6px;line-height:1.6;
}
.icon-btn{
  width:42px;height:42px;border-radius:12px;display:grid;place-items:center;
  border:1px solid var(--line);background:#fff;color:var(--ink-600);
  transition:all .18s ease;
}
.icon-btn:hover{color:var(--brand-700);border-color:var(--brand-500);background:var(--info-bg);}
.menu-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:#fff;color:var(--ink-900);
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1;
  transition:transform .16s ease,background .18s ease,color .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.btn-primary{background:var(--accent-500);color:#fff;box-shadow:0 10px 22px -12px rgba(232,84,31,.75);}
.btn-primary:hover{background:var(--accent-600);color:#fff;transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;color:var(--brand-700);border:1px solid var(--brand-700);}
.btn-ghost:hover{background:var(--info-bg);color:var(--brand-700);}
.btn-light{background:#fff;color:var(--brand-900);}
.btn-light:hover{background:#fff;color:var(--accent-600);}
.btn-text{display:inline-flex;align-items:center;gap:6px;color:var(--brand-500);font-weight:600;padding:0;}
.btn-text i{transition:transform .18s ease;}
.btn-text:hover i{transform:translateX(3px);}
.btn-block{width:100%;}

/* ---------- page hero ---------- */
.page-hero{
  position:relative;
  background-image:linear-gradient(120deg,rgba(12,59,46,.94),rgba(12,59,46,.78)),url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center;
  color:#fff;
  padding:72px 0 64px;
  overflow:hidden;
}
.page-hero::after{
  content:"";position:absolute;inset:auto -10% -60% 40%;height:320px;
  background:repeating-linear-gradient(115deg,rgba(255,255,255,.05) 0 2px,transparent 2px 22px);
  pointer-events:none;
}
.page-hero-inner{
  position:relative;z-index:2;
  display:grid;grid-template-columns:1.35fr .85fr;gap:48px;align-items:center;
}
.breadcrumb{font-size:13px;color:rgba(255,255,255,.7);margin-bottom:16px;}
.breadcrumb a{color:rgba(255,255,255,.8);}
.breadcrumb a:hover{color:var(--accent-500);}
.breadcrumb span{color:rgba(255,255,255,.55);margin:0 6px;}
.breadcrumb .current{color:rgba(255,255,255,.95);}
.eyebrow{
  display:inline-block;font-size:13px;font-weight:600;
  padding:4px 12px;border-radius:999px;
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.24);
  color:#fff;margin-bottom:18px;
}
.page-hero h1{
  color:#fff;font-size:44px;line-height:1.28;margin-bottom:18px;max-width:17em;
}
.page-hero .lead{
  color:rgba(255,255,255,.86);font-size:17px;line-height:1.9;max-width:34em;margin-bottom:26px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px;}
.hero-meta{display:flex;flex-wrap:wrap;gap:22px;}
.hero-meta li{
  font-size:14px;color:rgba(255,255,255,.82);display:flex;align-items:center;gap:8px;
  font-variant-numeric:tabular-nums;
}
.hero-meta i{color:var(--accent-500);}
.page-hero-media{
  margin:0;border-radius:var(--radius-card);overflow:hidden;
  border:1px solid rgba(255,255,255,.2);
  box-shadow:0 24px 50px -20px rgba(0,0,0,.55);
}
.page-hero-media img{width:100%;height:280px;object-fit:cover;}

/* ---------- sections ---------- */
.section{padding:96px 0;}
.section-tight{padding:64px 0;}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.section-kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--brand-700);
  background:var(--info-bg);border-radius:999px;padding:5px 14px;margin-bottom:16px;
}
.section-head h2{font-size:34px;margin-bottom:14px;}
.section-head p{font-size:17px;color:var(--ink-600);margin:0;}
.rule{height:1px;background:var(--line);position:relative;border:0;margin:0;}
.rule::before{content:"";position:absolute;left:0;top:-1px;width:3px;height:3px;background:var(--brand-700);}

/* ---------- cards grid ---------- */
.card-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.term-card{
  display:flex;flex-direction:column;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);overflow:hidden;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.term-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#d6d2c7;}
.term-card figure{margin:0;overflow:hidden;aspect-ratio:16/9;background:var(--bg-100);}
.term-card figure img{width:100%;height:100%;object-fit:cover;transition:transform .2s ease;}
.term-card:hover figure img{transform:scale(1.03);}
.term-body{padding:24px;display:flex;flex-direction:column;flex:1;}
.badge{
  display:inline-flex;align-items:center;gap:6px;align-self:flex-start;
  font-size:12px;font-weight:600;color:var(--brand-700);
  background:var(--info-bg);border-radius:999px;padding:4px 11px;margin-bottom:14px;
}
.badge-accent{color:var(--accent-600);background:#FDF0EA;}
.badge-muted{color:var(--ink-600);background:var(--bg-100);border:1px solid var(--line);}
.term-body h3{font-size:20px;margin-bottom:10px;}
.term-body p{font-size:15px;color:var(--ink-600);margin-bottom:18px;}
.card-foot{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--ink-400);font-variant-numeric:tabular-nums;
}
.card-foot .btn-text{font-size:14px;}

/* ---------- timeline ---------- */
.timeline-wrap{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:40px 40px 20px;box-shadow:var(--shadow-1);
}
.timeline{position:relative;padding-left:38px;}
.timeline::before{
  content:"";position:absolute;left:9px;top:8px;bottom:26px;width:2px;
  background:linear-gradient(180deg,var(--brand-500),var(--line));
}
.timeline-item{position:relative;padding-bottom:30px;}
.timeline-item::before{
  content:"";position:absolute;left:-37px;top:8px;
  width:14px;height:14px;border-radius:50%;
  background:var(--surface);border:3px solid var(--brand-500);
}
.timeline-item:first-child::before{border-color:var(--accent-500);}
.timeline-top{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-bottom:8px;}
.timeline-num{
  font-size:13px;font-weight:700;color:#fff;background:var(--brand-700);
  border-radius:8px;padding:2px 9px;font-variant-numeric:tabular-nums;
}
.timeline-item:first-child .timeline-num{background:var(--accent-500);}
.timeline-top h3{font-size:19px;}
.timeline-date{font-size:13px;color:var(--ink-400);font-variant-numeric:tabular-nums;margin-left:auto;}
.timeline-item p{font-size:15px;margin:0;max-width:62em;}

/* ---------- split feature ---------- */
.split{
  display:grid;grid-template-columns:1.05fr 1fr;gap:48px;align-items:center;
}
.split-media{
  margin:0;border-radius:var(--radius-card);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow-1);
  aspect-ratio:4/3;background:var(--bg-100);
}
.split-media img{width:100%;height:100%;object-fit:cover;}
.split h2{font-size:32px;margin-bottom:16px;}
.split p{font-size:16.5px;}
.check-list{margin-top:22px;display:grid;gap:14px;}
.check-list li{
  display:flex;gap:12px;align-items:flex-start;
  font-size:15.5px;color:var(--ink-600);
}
.check-list i{color:var(--brand-500);margin-top:6px;font-size:14px;}
.panel-pair{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:26px;}
.panel{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:20px;box-shadow:var(--shadow-1);
}
.panel h4{font-size:16px;margin-bottom:8px;display:flex;align-items:center;gap:8px;}
.panel h4 i{color:var(--brand-500);}
.panel p{font-size:14px;margin:0;color:var(--ink-600);}

/* ---------- stats ---------- */
.stat-strip{
  display:grid;grid-template-columns:repeat(4,1fr);
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);overflow:hidden;
}
.stat{padding:28px 24px;border-right:1px solid var(--line);}
.stat:last-child{border-right:0;}
.stat-num{
  display:block;font-size:34px;font-weight:700;color:var(--brand-700);
  font-variant-numeric:tabular-nums;line-height:1.2;
}
.stat-num em{font-style:normal;font-size:16px;color:var(--ink-400);margin-left:4px;}
.stat-label{display:block;font-size:14px;color:var(--ink-600);margin-top:6px;}

/* ---------- compare list ---------- */
.compare{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:8px 28px;box-shadow:var(--shadow-1);
}
.compare-row{
  display:grid;grid-template-columns:200px 1fr auto;gap:24px;align-items:center;
  padding:20px 0;border-bottom:1px solid var(--line);
}
.compare-row:last-child{border-bottom:0;}
.compare-name{font-size:16px;font-weight:600;color:var(--ink-900);}
.compare-desc{font-size:14.5px;color:var(--ink-600);}
.compare-tag{
  font-size:12.5px;font-weight:600;border-radius:999px;padding:5px 12px;white-space:nowrap;
}
.tag-ok{color:var(--brand-700);background:var(--info-bg);}
.tag-warn{color:var(--accent-600);background:#FDF0EA;}
.tag-neutral{color:var(--ink-600);background:var(--bg-100);border:1px solid var(--line);}

/* ---------- faq ---------- */
.faq-layout{display:grid;grid-template-columns:.75fr 1.25fr;gap:48px;align-items:start;}
.faq-list{display:grid;gap:12px;}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:14px;
  overflow:hidden;transition:border-color .18s ease,box-shadow .18s ease;
}
.faq-item[open]{border-color:#cfd9d3;box-shadow:var(--shadow-1);}
.faq-item summary{
  position:relative;list-style:none;cursor:pointer;
  padding:20px 56px 20px 22px;font-size:16.5px;font-weight:600;color:var(--ink-900);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:0 3px 3px 0;
  background:var(--accent-500);opacity:0;transition:opacity .16s ease;
}
.faq-item[open] summary::before{opacity:1;}
.faq-item summary::after{
  content:"+";position:absolute;right:22px;top:50%;transform:translateY(-50%);
  font-size:20px;font-weight:400;color:var(--brand-500);line-height:1;
}
.faq-item[open] summary::after{content:"−";color:var(--accent-500);}
.faq-body{padding:0 22px 20px;font-size:15.5px;color:var(--ink-600);}
.faq-body p{margin:0;}
.faq-side{background:var(--info-bg);border:1px solid #dbe8e1;border-radius:var(--radius-card);padding:28px;}
.faq-side h3{font-size:20px;margin-bottom:12px;}
.faq-side p{font-size:15px;margin-bottom:20px;}
.faq-side .quick{display:grid;gap:10px;margin-bottom:22px;}
.faq-side .quick a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  background:#fff;border:1px solid var(--line);border-radius:12px;
  padding:12px 16px;font-size:14.5px;color:var(--ink-900);
}
.faq-side .quick a:hover{border-color:var(--brand-500);color:var(--brand-700);}

/* ---------- cta ---------- */
.cta-block{
  position:relative;overflow:hidden;
  background:var(--brand-900);
  border-radius:20px;
  padding:56px;
  display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center;
  color:rgba(255,255,255,.82);
}
.cta-block::after{
  content:"";position:absolute;right:-60px;top:-60px;width:280px;height:280px;
  border-radius:50%;background:radial-gradient(circle,rgba(23,166,115,.35),transparent 68%);
}
.cta-block h2{color:#fff;font-size:32px;margin-bottom:14px;position:relative;z-index:2;}
.cta-block p{font-size:16px;color:rgba(255,255,255,.8);margin:0;position:relative;z-index:2;}
.cta-form{position:relative;z-index:2;}
.cta-form .field-row{display:flex;gap:12px;}
.cta-form input{
  flex:1;height:50px;border-radius:var(--radius-btn);
  border:1px solid rgba(255,255,255,.24);background:rgba(255,255,255,.08);
  color:#fff;padding:0 16px;outline:none;transition:border-color .18s ease,background .18s ease;
}
.cta-form input::placeholder{color:rgba(255,255,255,.55);}
.cta-form input:focus{border-color:var(--brand-500);background:rgba(255,255,255,.14);}
.cta-form .hint{font-size:13px;color:rgba(255,255,255,.6);margin:12px 0 0;}

/* ---------- related ---------- */
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.related-card{
  display:block;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:26px;box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.related-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#d6d2c7;}
.related-card i{
  width:42px;height:42px;border-radius:12px;display:grid;place-items:center;
  background:var(--info-bg);color:var(--brand-700);margin-bottom:16px;
}
.related-card h3{font-size:18px;margin-bottom:8px;color:var(--ink-900);}
.related-card p{font-size:14.5px;color:var(--ink-600);margin:0;}
.related-card .more{
  display:inline-flex;align-items:center;gap:6px;margin-top:16px;
  font-size:14px;font-weight:600;color:var(--brand-500);
}

/* ---------- footer ---------- */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.7);padding:64px 0 28px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:700;margin-bottom:16px;}
.footer-brand .brand-mark{background:linear-gradient(135deg,var(--brand-500),var(--accent-500));}
.site-footer p{font-size:14.5px;line-height:1.9;color:rgba(255,255,255,.68);margin:0;}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:16px;}
.footer-links{display:grid;gap:10px;}
.footer-links a{font-size:14.5px;color:rgba(255,255,255,.7);}
.footer-links a:hover{color:var(--accent-500);}
.footer-contact{display:grid;gap:10px;font-size:14.5px;}
.footer-contact li{display:flex;align-items:flex-start;gap:10px;color:rgba(255,255,255,.7);}
.footer-contact i{margin-top:5px;color:var(--brand-500);}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13.5px;color:rgba(255,255,255,.6);
}
.footer-bottom a{color:rgba(255,255,255,.7);}
.footer-bottom a:hover{color:var(--accent-500);}

/* ---------- back to top ---------- */
.back-top{
  position:fixed;right:22px;bottom:24px;z-index:70;
  width:46px;height:46px;border-radius:14px;display:grid;place-items:center;
  background:var(--brand-700);color:#fff;box-shadow:var(--shadow-2);
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .2s ease,transform .2s ease,visibility .2s;
}
.back-top.show{opacity:1;visibility:visible;transform:translateY(0);}
.back-top:hover{background:var(--accent-500);color:#fff;}

/* ---------- skeleton ---------- */
.skeleton{
  background:linear-gradient(90deg,#EFEDE7 25%,#F7F6F2 37%,#EFEDE7 63%);
  background-size:400% 100%;animation:skeleton 1.4s ease infinite;border-radius:10px;
}
@keyframes skeleton{0%{background-position:100% 0;}100%{background-position:0 0;}}

/* ---------- mobile drawer ---------- */
.drawer{
  position:fixed;inset:0;z-index:90;display:none;
}
.drawer.open{display:block;}
.drawer-mask{position:absolute;inset:0;background:rgba(0,0,0,.4);}
.drawer-panel{
  position:absolute;top:0;right:0;bottom:0;width:82%;max-width:340px;
  background:#fff;padding:22px;overflow-y:auto;
  box-shadow:-16px 0 40px -20px rgba(0,0,0,.4);
  animation:drawerIn .22s ease;
}
@keyframes drawerIn{from{transform:translateX(24px);opacity:.6;}to{transform:translateX(0);opacity:1;}}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px;}
.drawer-nav{display:grid;gap:6px;margin-bottom:24px;}
.drawer-nav a{
  padding:13px 14px;border-radius:12px;font-size:16px;color:var(--ink-900);font-weight:500;
}
.drawer-nav a:hover{background:var(--bg-100);}
.drawer-nav a.active{background:var(--info-bg);color:var(--brand-700);font-weight:600;}
.drawer-close{width:40px;height:40px;border-radius:12px;border:1px solid var(--line);display:grid;place-items:center;}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .command-search{min-width:190px;}
}
@media (max-width:1023px){
  .nav-links{display:none;}
  .command-search{display:none;}
  .menu-toggle{display:grid;place-items:center;}
  .header-tools .btn-primary{display:none;}
  .page-hero-inner{grid-template-columns:1fr;gap:32px;}
  .page-hero h1{font-size:34px;}
  .page-hero-media img{height:230px;}
  .section{padding:72px 0;}
  .section-head h2{font-size:27px;}
  .card-grid{grid-template-columns:1fr;}
  .split{grid-template-columns:1fr;gap:32px;}
  .split h2{font-size:26px;}
  .stat-strip{grid-template-columns:repeat(2,1fr);}
  .stat{border-right:0;border-bottom:1px solid var(--line);}
  .stat:nth-child(2n){border-right:0;}
  .stat:nth-child(1),.stat:nth-child(3){border-right:1px solid var(--line);}
  .stat:nth-child(3),.stat:nth-child(4){border-bottom:0;}
  .faq-layout{grid-template-columns:1fr;gap:28px;}
  .cta-block{grid-template-columns:1fr;padding:36px;}
  .cta-block h2{font-size:26px;}
  .related-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .timeline-wrap{padding:28px 24px 8px;}
  .compare{padding:4px 20px;}
  .compare-row{grid-template-columns:1fr;gap:8px;padding:18px 0;}
  .compare-tag{justify-self:start;}
}
@media (max-width:575px){
  body{font-size:16px;}
  .container{padding:0 18px;}
  .header-inner{height:64px;gap:12px;}
  .brand-text{font-size:15px;}
  .page-hero{padding:48px 0 44px;}
  .page-hero h1{font-size:27px;}
  .page-hero .lead{font-size:15.5px;}
  .hero-actions .btn{width:100%;}
  .section{padding:56px 0;}
  .section-head{margin-bottom:30px;}
  .section-head h2{font-size:23px;}
  .split-media{aspect-ratio:16/10;}
  .timeline{padding-left:30px;}
  .timeline::before{left:7px;}
  .timeline-item::before{left:-30px;width:12px;height:12px;}
  .timeline-date{margin-left:0;}
  .panel-pair{grid-template-columns:1fr;}
  .stat-strip{grid-template-columns:1fr;}
  .stat{border-right:0 !important;border-bottom:1px solid var(--line);}
  .stat:last-child{border-bottom:0;}
  .cta-block{padding:28px 22px;border-radius:16px;}
  .cta-form .field-row{flex-direction:column;}
  .cta-form .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

/* roulang page: category3 */
:root{
  --brand-900:#0C3B2E;
  --brand-700:#0E5B45;
  --brand-500:#17A673;
  --accent-600:#E8541F;
  --accent-500:#FF6A2B;
  --ink-900:#141A17;
  --ink-600:#4C564F;
  --ink-400:#7C877F;
  --bg-100:#F7F6F2;
  --surface:#FFFFFF;
  --line:#E4E1DA;
  --info-bg:#EEF5F1;
  --radius-card:16px;
  --radius-btn:12px;
  --radius-img:12px;
  --shadow-card:0 1px 2px rgba(20,30,25,.06),0 14px 34px -14px rgba(20,30,25,.16);
  --shadow-hover:0 2px 4px rgba(20,30,25,.08),0 22px 46px -16px rgba(20,30,25,.22);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans","Source Han Sans SC","Microsoft YaHei",sans-serif;
  font-size:17px;
  line-height:1.9;
  color:var(--ink-600);
  background:var(--bg-100);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--brand-500);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--accent-600)}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
input{font:inherit}
h1,h2,h3,h4{margin:0;color:var(--ink-900);line-height:1.35;font-weight:700}
h3{font-weight:600}
p{margin:0 0 1.2em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent-500);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.96);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease;
}
.site-header.is-scrolled{box-shadow:0 1px 2px rgba(20,30,25,.06),0 14px 34px -20px rgba(20,30,25,.2)}
.header-inner{display:flex;align-items:center;gap:20px;height:76px}
.logo{display:flex;align-items:center;gap:10px;color:var(--ink-900);font-weight:700;font-size:17px;white-space:nowrap}
.logo:hover{color:var(--brand-700)}
.brand-mark{
  width:36px;height:36px;border-radius:10px;flex:0 0 auto;
  background:linear-gradient(135deg,var(--brand-700),var(--brand-500));
  color:#fff;display:grid;place-items:center;font-size:16px;font-weight:700;
}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:6px}
.nav-link{position:relative;padding:10px 14px;border-radius:10px;color:var(--ink-600);font-size:15px;font-weight:500}
.nav-link:hover{background:var(--info-bg);color:var(--brand-700)}
.nav-link.active{color:var(--brand-700);background:var(--info-bg)}
.nav-link.active::after{content:"";position:absolute;left:14px;right:14px;bottom:5px;height:2px;border-radius:2px;background:var(--brand-700)}
.header-tools{margin-left:auto;display:flex;align-items:center;gap:12px}
.command-search{
  position:relative;display:flex;align-items:center;width:256px;height:44px;
  border:1px solid var(--line);border-radius:12px;background:var(--bg-100);padding:0 12px;
  transition:border-color .18s ease,background .18s ease,box-shadow .18s ease;
}
.command-search:focus-within{border-color:var(--brand-500);background:var(--surface);box-shadow:0 0 0 3px rgba(23,166,115,.12)}
.command-search i{color:var(--ink-400);font-size:14px}
.command-search input{flex:1;border:0;background:transparent;outline:none;padding:0 8px;font-size:14px;color:var(--ink-900);min-width:0}
.command-search input::placeholder{color:var(--ink-400)}
.kbd{font-size:11px;color:var(--ink-400);border:1px solid var(--line);background:var(--surface);border-radius:6px;padding:2px 6px;font-variant-numeric:tabular-nums}
.icon-btn{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:var(--surface);
  color:var(--ink-600);display:grid;place-items:center;transition:all .18s ease;
}
.icon-btn:hover{color:var(--brand-700);background:var(--info-bg);border-color:rgba(14,91,69,.2)}
.hamburger{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:var(--surface);
  align-items:center;justify-content:center;flex-direction:column;gap:4px;
}
.hamburger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink-900)}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;white-space:nowrap;
  transition:background .18s ease,color .18s ease,transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.btn-primary{background:var(--accent-500);color:#fff;box-shadow:0 10px 22px -12px rgba(232,84,31,.85)}
.btn-primary:hover{background:var(--accent-600);color:#fff;transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{border:1px solid var(--brand-700);color:var(--brand-700);background:transparent}
.btn-ghost:hover{background:var(--info-bg);color:var(--brand-700)}
.btn-ghost:active{transform:translateY(1px)}
.btn:disabled{opacity:.5;pointer-events:none}
.btn-text{display:inline-flex;align-items:center;gap:8px;color:var(--brand-700);font-weight:600;font-size:15px}
.btn-text i{transition:transform .18s ease}
.btn-text:hover{color:var(--accent-600)}
.btn-text:hover i{transform:translateX(3px)}

/* ============ Hero ============ */
.page-hero{
  position:relative;padding:72px 0 84px;overflow:hidden;
  background:
    linear-gradient(180deg,rgba(238,245,241,.92) 0%,rgba(247,246,242,.72) 100%),
    repeating-linear-gradient(115deg,rgba(23,166,115,.055) 0 2px,transparent 2px 28px);
  border-bottom:1px solid var(--line);
}
.hero-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:56px;align-items:center}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-400);margin-bottom:18px}
.breadcrumb a{color:var(--ink-400)}
.breadcrumb a:hover{color:var(--brand-500)}
.breadcrumb em{font-style:normal;color:var(--ink-400)}
.breadcrumb span{color:#C6C3BB}
.eyebrow{
  display:inline-block;font-size:13px;font-weight:600;color:var(--brand-700);
  background:var(--info-bg);border-radius:999px;padding:5px 12px;margin-bottom:16px;
}
.page-hero h1{font-size:clamp(30px,4vw,48px);line-height:1.3;margin-bottom:18px;max-width:22em}
.hero-sub{font-size:18px;line-height:1.9;color:var(--ink-600);max-width:600px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-meta{display:flex;gap:34px;margin-top:34px;padding-top:24px;border-top:1px solid var(--line);flex-wrap:wrap}
.hero-meta li{display:flex;flex-direction:column;gap:2px}
.hero-meta strong{font-size:26px;line-height:1.2;color:var(--brand-700);font-variant-numeric:tabular-nums}
.hero-meta span{font-size:13px;color:var(--ink-400)}
.hero-figure{position:relative}
.hero-figure img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius-card);box-shadow:var(--shadow-card)}
.hero-float{
  position:absolute;left:16px;bottom:16px;display:flex;gap:12px;align-items:center;
  background:rgba(255,255,255,.96);border-radius:14px;padding:14px 16px;
  box-shadow:var(--shadow-card);max-width:288px;
}
.hero-float .dot{width:10px;height:10px;border-radius:50%;background:var(--accent-500);flex:0 0 auto;box-shadow:0 0 0 6px rgba(255,106,43,.14)}
.hero-float strong{display:block;font-size:14px;color:var(--ink-900);line-height:1.5}
.hero-float span{font-size:12.5px;color:var(--ink-400);line-height:1.5}

/* ============ 板块通用 ============ */
.section{padding:96px 0}
.section-alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:780px;margin-bottom:44px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-head h2{font-size:clamp(24px,3vw,34px);margin-bottom:14px}
.section-lead{font-size:17px;color:var(--ink-600);max-width:720px}
.section-head.center .section-lead{margin-left:auto;margin-right:auto}

/* ============ 对照清单 ============ */
.compare-list{
  border:1px solid var(--line);border-radius:var(--radius-card);background:var(--surface);
  overflow:hidden;box-shadow:var(--shadow-card);
}
.compare-row{
  display:grid;grid-template-columns:1.05fr 1.55fr auto;gap:22px;align-items:center;
  padding:20px 24px;border-bottom:1px solid var(--line);transition:background .18s ease;
}
.compare-row:last-child{border-bottom:0}
.compare-row:hover{background:var(--bg-100)}
.compare-name{display:flex;gap:10px;align-items:flex-start;color:var(--ink-900);font-weight:600;font-size:16px;line-height:1.6}
.compare-index{font-variant-numeric:tabular-nums;color:var(--brand-500);font-weight:700;font-size:13px;padding-top:4px;flex:0 0 auto}
.compare-desc{font-size:14.5px;line-height:1.75}
.badge{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;border-radius:999px;padding:5px 12px;white-space:nowrap}
.badge-ok{background:#E7F6EF;color:#0E7A55}
.badge-warn{background:#FFF1E6;color:#B1531A}
.badge-info{background:#F1F0EC;color:#55605A}
.badge-danger{background:#FDECE8;color:#B0401C}
.compare-note{margin-top:20px;font-size:13.5px;color:var(--ink-400)}

/* ============ 图文分栏 ============ */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.split-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius-card);box-shadow:var(--shadow-card);transition:transform .2s ease}
.split-media:hover img{transform:scale(1.03)}
.split-body h2{font-size:clamp(24px,3vw,32px);margin-bottom:16px}
.split-body p{font-size:16.5px}
.check-list{margin:22px 0 26px}
.check-list li{position:relative;padding-left:26px;margin-bottom:13px;font-size:16px;line-height:1.8}
.check-list li::before{
  content:"";position:absolute;left:0;top:10px;width:12px;height:12px;
  border-radius:4px;background:var(--info-bg);border:1px solid var(--brand-500);
}
.check-list strong{color:var(--ink-900);font-weight:600}

/* ============ FAQ ============ */
.faq-layout{display:grid;grid-template-columns:.82fr 1.4fr;gap:56px;align-items:start}
.faq-aside{position:sticky;top:104px}
.faq-aside h2{font-size:clamp(24px,3vw,32px);margin-bottom:16px}
.faq-aside p{font-size:16px}
.faq-tip{
  display:flex;gap:12px;align-items:flex-start;margin-top:24px;
  background:var(--info-bg);border-radius:14px;padding:16px 18px;font-size:14px;line-height:1.75;color:var(--brand-700);
}
.faq-tip i{margin-top:5px;color:var(--brand-500)}
.faq-list{border-top:1px solid var(--line);background:var(--surface);border-radius:0 0 var(--radius-card) var(--radius-card)}
.faq-item{border-bottom:1px solid var(--line);border-left:3px solid transparent;transition:border-color .16s ease,background .16s ease}
.faq-item.open{border-left-color:var(--accent-500);background:#FCFCFA}
.faq-q{
  display:flex;width:100%;align-items:center;justify-content:space-between;gap:18px;
  text-align:left;padding:20px 20px 20px 18px;font-size:17px;font-weight:600;color:var(--ink-900);
  transition:color .16s ease;
}
.faq-q:hover{color:var(--brand-700)}
.faq-item.open .faq-q{color:var(--brand-700)}
.faq-icon{position:relative;flex:0 0 22px;height:22px;border-radius:999px;background:var(--info-bg)}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  background:var(--brand-700);border-radius:2px;transition:transform .16s ease,opacity .16s ease;
}
.faq-icon::before{width:10px;height:2px}
.faq-icon::after{width:2px;height:10px}
.faq-item.open .faq-icon::after{transform:translate(-50%,-50%) scaleY(0);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .16s ease}
.faq-a-inner{padding:0 22px 22px 18px;font-size:15.5px;line-height:1.85;color:var(--ink-600)}
.faq-a-inner p{margin:0}

/* ============ 支持说明 ============ */
.support-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.support-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:28px;box-shadow:var(--shadow-card);transition:transform .2s ease,box-shadow .2s ease;
}
.support-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.support-icon{
  width:44px;height:44px;border-radius:12px;background:var(--info-bg);color:var(--brand-700);
  display:grid;place-items:center;font-size:18px;margin-bottom:18px;
}
.support-card h3{font-size:19px;margin-bottom:10px}
.support-card p{font-size:15px;margin:0}

/* ============ 相关分类 ============ */
.related-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.related-card{
  display:flex;gap:20px;align-items:center;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:20px;box-shadow:var(--shadow-card);
  color:var(--ink-900);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.related-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);color:var(--ink-900);border-color:rgba(14,91,69,.24)}
.related-card img{width:120px;height:90px;object-fit:cover;border-radius:var(--radius-img);flex:0 0 auto}
.related-card h3{font-size:18px;margin-bottom:8px}
.related-card p{font-size:14px;color:var(--ink-600);margin:0}
.related-card .more{display:inline-flex;align-items:center;gap:6px;margin-top:10px;font-size:13.5px;font-weight:600;color:var(--brand-700)}

/* ============ CTA 色块 ============ */
.cta-band{position:relative;background:var(--brand-900);color:#fff;padding:76px 0;overflow:hidden}
.cta-band::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:repeating-linear-gradient(115deg,rgba(255,255,255,.045) 0 2px,transparent 2px 34px);
}
.cta-inner{position:relative;z-index:1;display:grid;grid-template-columns:1.15fr 1fr;gap:48px;align-items:center}
.cta-band h2{color:#fff;font-size:clamp(24px,3vw,30px);margin-bottom:12px}
.cta-band p{color:rgba(255,255,255,.75);font-size:16px;margin:0}
.cta-form{display:flex;gap:12px;flex-wrap:wrap}
.cta-form input{
  flex:1;min-width:200px;height:48px;border-radius:var(--radius-btn);
  border:1px solid rgba(255,255,255,.24);background:rgba(255,255,255,.08);
  color:#fff;padding:0 16px;outline:none;transition:border-color .18s ease,box-shadow .18s ease;
}
.cta-form input::placeholder{color:rgba(255,255,255,.5)}
.cta-form input:focus{border-color:var(--accent-500);box-shadow:0 0 0 3px rgba(255,106,43,.25)}
.cta-tip{flex-basis:100%;font-size:13px;margin:2px 0 0;color:rgba(255,255,255,.6)}
.cta-tip.ok{color:#7FE3B8}
.cta-tip.error{color:#FFB59B}

/* ============ 页脚 ============ */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.72);padding:64px 0 0;font-size:14.5px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:17px;margin-bottom:16px}
.footer-brand .brand-mark{background:linear-gradient(135deg,var(--brand-500),var(--accent-500))}
.site-footer p{max-width:340px;line-height:1.85;color:rgba(255,255,255,.7);font-size:14px}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:16px;font-weight:600}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{color:rgba(255,255,255,.72);font-size:14px}
.footer-links a:hover{color:var(--accent-500)}
.footer-contact{display:flex;flex-direction:column;gap:10px}
.footer-contact li{display:flex;gap:10px;align-items:flex-start;line-height:1.6;font-size:14px}
.footer-contact i{color:var(--brand-500);margin-top:5px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14);padding:22px 0;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13.5px;
}
.footer-bottom a{color:rgba(255,255,255,.72)}
.footer-bottom a:hover{color:var(--accent-500)}

/* ============ 回到顶部 / 抽屉 ============ */
.to-top{
  position:fixed;right:24px;bottom:28px;width:46px;height:46px;border-radius:14px;
  background:var(--brand-700);color:#fff;display:grid;place-items:center;z-index:70;
  opacity:0;pointer-events:none;transform:translateY(10px);
  transition:opacity .22s ease,transform .22s ease,background .18s ease;box-shadow:var(--shadow-card);
}
.to-top.show{opacity:1;pointer-events:auto;transform:none}
.to-top:hover{background:var(--accent-500);color:#fff}
.nav-overlay{
  position:fixed;inset:0;background:rgba(12,20,16,.4);z-index:80;
  opacity:0;pointer-events:none;transition:opacity .22s ease;
}
.nav-overlay.show{opacity:1;pointer-events:auto}
.nav-drawer{
  position:fixed;top:0;right:0;height:100%;width:min(320px,86vw);background:var(--surface);z-index:90;
  transform:translateX(100%);transition:transform .26s ease;padding:24px;
  display:flex;flex-direction:column;gap:6px;overflow-y:auto;
  box-shadow:-14px 0 40px -20px rgba(20,30,25,.35);
}
.nav-drawer.open{transform:none}
.drawer-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}
.drawer-head .logo{font-size:16px}
.drawer-close{width:38px;height:38px;border-radius:10px;background:var(--bg-100);color:var(--ink-600);display:grid;place-items:center}
.drawer-close:hover{background:var(--info-bg);color:var(--brand-700)}
.drawer-link{padding:14px 12px;border-radius:12px;color:var(--ink-900);font-weight:500;border:1px solid transparent;font-size:15.5px}
.drawer-link:hover{background:var(--bg-100);color:var(--brand-700)}
.drawer-link.active{background:var(--info-bg);color:var(--brand-700);border-color:rgba(14,91,69,.16)}
.drawer-cta{margin-top:14px}
.drawer-cta .btn{width:100%}

/* 骨架屏（列表加载占位） */
.skeleton{
  border-radius:10px;
  background:linear-gradient(90deg,#EFEDE7 25%,#F7F6F2 37%,#EFEDE7 63%);
  background-size:400% 100%;
  animation:skeleton 1.4s ease infinite;
}
@keyframes skeleton{0%{background-position:100% 50%}100%{background-position:0 50%}}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .command-search{width:206px}
}
@media (max-width:1023px){
  .nav-links{display:none}
  .command-search{display:none}
  .icon-btn{display:none}
  .hamburger{display:flex}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .split{grid-template-columns:1fr;gap:32px}
  .split-media{order:-1}
  .faq-layout{grid-template-columns:1fr;gap:32px}
  .faq-aside{position:static}
  .support-grid{grid-template-columns:1fr}
  .related-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-inner{grid-template-columns:1fr;gap:28px}
}
@media (max-width:767px){
  body{font-size:16px}
  .container{padding:0 18px}
  .section{padding:60px 0}
  .page-hero{padding:48px 0 56px}
  .header-inner{height:66px;gap:12px}
  .logo{font-size:15.5px}
  .brand-mark{width:32px;height:32px;font-size:14px}
  .page-hero h1{font-size:30px}
  .hero-sub{font-size:16.5px}
  .hero-actions .btn{flex:1 1 auto}
  .hero-meta{gap:22px}
  .hero-meta strong{font-size:22px}
  .compare-row{grid-template-columns:1fr;gap:10px;padding:18px}
  .compare-list{border-radius:14px}
  .section-head{margin-bottom:30px}
  .faq-q{font-size:16px;padding:18px 16px}
  .faq-a-inner{padding:0 18px 20px 16px}
  .related-card{flex-direction:column;align-items:flex-start}
  .related-card img{width:100%;height:150px}
  .cta-band{padding:56px 0}
  .cta-form{flex-direction:column}
  .cta-form input{width:100%}
  .cta-form .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:10px}
  .to-top{right:16px;bottom:18px}
}
@media (max-width:520px){
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .hero-float{left:12px;right:12px;bottom:12px;max-width:none}
}