/* roulang page: index */
:root{
  --primary:#1E63A8;
  --primary-dark:#154A80;
  --primary-soft:#E9F1FA;
  --accent:#12A594;
  --accent-soft:#E4F5F2;
  --warn:#F2793B;
  --warn-soft:#FDEBE0;
  --text:#15202B;
  --text-2:#4A5764;
  --text-3:#7C8894;
  --border:#E3E9F0;
  --bg:#F6F9FC;
  --card:#FFFFFF;
  --dark:#0F2233;
  --danger:#D9534F;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(21,32,43,.05);
  --shadow-2:0 6px 20px rgba(21,32,43,.07);
  --shadow-3:0 14px 32px rgba(21,32,43,.10);
  --side-w:240px;
  --top-h:64px;
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Inter","PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.28;color:var(--text)}
p{margin:0 0 16px}
p:last-child{margin-bottom:0}
a{color:inherit;text-decoration:none;transition:color .18s ease}
img{max-width:100%;display:block}
ul,ol{margin:0;padding:0;list-style:none}
button,input{font-family:inherit;font-size:inherit}
button{cursor:pointer;border:0;background:none;color:inherit}
table{border-collapse:collapse;width:100%}
a:focus-visible,button:focus-visible,input:focus-visible,.faq-q:focus-visible{
  outline:3px solid rgba(30,99,168,.32);
  outline-offset:2px;
  border-radius:6px;
}
::selection{background:var(--primary-soft);color:var(--primary-dark)}

/* ---------- 布局骨架 ---------- */
.app-shell{display:flex;min-height:100vh;width:100%}
.app-body{
  margin-left:var(--side-w);
  flex:1 1 auto;
  min-width:0;
  display:flex;
  flex-direction:column;
}
.wrap{width:100%;max-width:var(--container);margin:0 auto;padding:0 40px}

/* ---------- 左侧导航 ---------- */
.side-nav{
  position:fixed;
  top:0;left:0;
  width:var(--side-w);
  height:100vh;
  background:var(--card);
  border-right:1px solid var(--border);
  display:flex;
  flex-direction:column;
  padding:22px 16px 18px;
  z-index:80;
  transition:transform .26s ease;
}
.brand{display:flex;align-items:center;gap:10px;padding:6px 8px 20px}
.brand-mark{
  width:38px;height:38px;flex:0 0 38px;border-radius:11px;
  background:linear-gradient(135deg,var(--primary) 0%,#2E7CC4 100%);
  color:#fff;display:flex;align-items:center;justify-content:center;
  font-size:17px;font-weight:700;letter-spacing:.02em;
  box-shadow:0 6px 16px rgba(30,99,168,.24);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;min-width:0}
.brand-name{font-size:16px;font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.brand-tag{font-size:11px;color:var(--text-3);letter-spacing:.14em}
.side-group{
  font-size:12px;color:var(--text-3);letter-spacing:.08em;
  padding:14px 10px 8px;margin:0;font-weight:600;
}
.side-link{
  display:flex;align-items:center;gap:12px;
  height:44px;padding:0 12px;border-radius:var(--radius-btn);
  font-size:15px;color:var(--text-2);
  position:relative;
  transition:background .18s ease,color .18s ease;
}
.side-link i{width:20px;text-align:center;font-size:15px;color:var(--text-3);transition:color .18s ease}
.side-link:hover{background:var(--primary-soft);color:var(--primary-dark)}
.side-link:hover i{color:var(--primary)}
.side-link.is-active{background:var(--primary-soft);color:var(--primary);font-weight:600}
.side-link.is-active i{color:var(--primary)}
.side-link.is-active::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;
  border-radius:0 3px 3px 0;background:var(--primary);
}
.side-foot{margin-top:auto}
.side-card{
  border:1px solid var(--border);
  border-radius:var(--radius-card);
  background:linear-gradient(180deg,#FBFDFF 0%,#F2F7FC 100%);
  padding:16px 14px;
  box-shadow:var(--shadow-1);
}
.side-card p{font-size:13px;line-height:1.65;color:var(--text-2);margin:0 0 12px}
.side-card .btn{width:100%;justify-content:center}

/* ---------- 顶部条 ---------- */
.topbar{
  position:sticky;top:0;z-index:60;
  height:var(--top-h);
  display:flex;align-items:center;gap:16px;
  padding:0 40px;
  background:rgba(255,255,255,.96);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--border);
}
.topbar-left{display:flex;align-items:center;gap:14px;min-width:0;flex:1 1 auto}
.topbar-right{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.breadcrumb{font-size:13px;color:var(--text-3);display:flex;align-items:center;gap:8px}
.breadcrumb .sep{color:#C6CFD8}
.breadcrumb strong{color:var(--text);font-weight:600}
.search-box{
  display:flex;align-items:center;gap:8px;
  height:40px;padding:0 14px;
  border:1px solid var(--border);border-radius:var(--radius-pill);
  background:#FBFDFF;color:var(--text-3);font-size:14px;
  max-width:300px;flex:1 1 auto;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.search-box i{font-size:13px}
.search-box input{border:0;background:transparent;outline:none;width:100%;font-size:14px;color:var(--text)}
.search-box input::placeholder{color:var(--text-3)}
.search-box:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px rgba(30,99,168,.14)}
.pill{
  display:inline-flex;align-items:center;gap:7px;
  height:34px;padding:0 14px;border-radius:var(--radius-pill);
  background:var(--accent-soft);color:#0C7E72;
  font-size:13px;font-weight:600;white-space:nowrap;
}
.pill i{font-size:12px}
.menu-toggle{
  display:none;width:44px;height:44px;border-radius:var(--radius-btn);
  align-items:center;justify-content:center;font-size:18px;color:var(--text-2);
  border:1px solid var(--border);background:#fff;
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;
  transition:background .18s ease,color .18s ease,transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.btn i{font-size:14px}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 6px 16px rgba(30,99,168,.22)}
.btn-primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-3)}
.btn-primary:active{transform:translateY(0);box-shadow:var(--shadow-1)}
.btn-accent{background:var(--warn);color:#fff;box-shadow:0 6px 16px rgba(242,121,59,.24)}
.btn-accent:hover{background:#DE6428;color:#fff;transform:translateY(-2px)}
.btn-accent:active{transform:translateY(0)}
.btn-ghost{background:#fff;color:var(--primary);border-color:#C9DCEF}
.btn-ghost:hover{background:var(--primary-soft);border-color:var(--primary);color:var(--primary-dark);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{padding:10px 18px;font-size:14px}
.btn-block{width:100%}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  padding:64px 0 84px;
  overflow:hidden;
  background:linear-gradient(180deg,#F0F6FC 0%,#F6F9FC 100%);
  border-bottom:1px solid var(--border);
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(30,99,168,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(30,99,168,.05) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:linear-gradient(120deg,rgba(0,0,0,.55),transparent 70%);
  -webkit-mask-image:linear-gradient(120deg,rgba(0,0,0,.55),transparent 70%);
  pointer-events:none;
}
.hero::after{
  content:"";position:absolute;right:-140px;top:-120px;width:560px;height:560px;border-radius:50%;
  background:radial-gradient(circle at 35% 35%,rgba(18,165,148,.10),rgba(30,99,168,.06) 58%,transparent 72%);
  pointer-events:none;
}
.hero .wrap{position:relative;z-index:2}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;letter-spacing:.06em;color:var(--primary);
  background:#fff;border:1px solid #D6E5F5;border-radius:var(--radius-pill);
  padding:7px 14px;margin-bottom:22px;box-shadow:var(--shadow-1);
}
.hero h1{
  font-size:clamp(30px,4vw,44px);
  letter-spacing:0;
  margin-bottom:18px;
  max-width:15em;
}
.hero-sub{
  font-size:18px;color:var(--primary-dark);font-weight:600;
  margin-bottom:14px;
}
.hero-desc{font-size:16px;color:var(--text-2);max-width:33em;margin-bottom:28px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px}
.hero-badges{
  display:flex;flex-wrap:wrap;gap:10px;
}
.badge-chip{
  display:inline-flex;align-items:center;gap:8px;
  height:38px;padding:0 14px;border-radius:var(--radius-pill);
  background:#fff;border:1px solid var(--border);box-shadow:var(--shadow-1);
  font-size:13px;color:var(--text-2);white-space:nowrap;
}
.badge-chip i{color:var(--accent);font-size:12px}
.hero-media{
  position:relative;border-radius:16px;overflow:hidden;
  box-shadow:var(--shadow-3);
  aspect-ratio:16/9;
  border:1px solid #fff;
}
.hero-media img{width:100%;height:100%;object-fit:cover}
.hero-media::after{
  content:"";position:absolute;left:16px;bottom:16px;
  padding:6px 12px;border-radius:var(--radius-pill);
  background:rgba(15,34,51,.62);color:#fff;font-size:12px;
}
.hero-media::after{content:"会员中心权益总览";}

/* ---------- 板块基础 ---------- */
.section{padding:88px 0}
.section--tight{padding:64px 0}
.section--soft{background:#fff;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.section-head{margin-bottom:44px}
.section-head .row{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;
}
.section-title{font-size:clamp(24px,3vw,32px);margin-bottom:12px}
.section-lead{font-size:16px;color:var(--text-2);max-width:46em}
.section-more{font-size:14px;font-weight:600;color:var(--primary);white-space:nowrap;display:inline-flex;align-items:center;gap:6px}
.section-more:hover{color:var(--primary-dark)}
.section-more i{font-size:12px;transition:transform .18s ease}
.section-more:hover i{transform:translateX(3px)}
.eyebrow{
  display:inline-block;font-size:12px;font-weight:600;letter-spacing:.08em;
  color:var(--accent);background:var(--accent-soft);
  padding:5px 12px;border-radius:var(--radius-pill);margin-bottom:14px;
}

/* ---------- 权益对比表 ---------- */
.compare-wrap{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius-card);
  box-shadow:var(--shadow-2);overflow-x:auto;-webkit-overflow-scrolling:touch;
}
.compare-scroll-hint{display:none;font-size:13px;color:var(--text-3);margin-top:12px;text-align:center}
.compare-table{min-width:760px;width:100%}
.compare-table th,.compare-table td{
  height:56px;padding:0 18px;text-align:center;font-size:15px;
  border-bottom:1px solid var(--border);color:var(--text);
  vertical-align:middle;
}
.compare-table thead th{
  height:76px;font-size:15px;font-weight:700;color:var(--text);
  background:#FBFDFF;border-bottom:1px solid var(--border);
  position:sticky;top:0;z-index:3;
}
.compare-table thead th:first-child{
  text-align:left;font-size:13px;font-weight:600;color:var(--text-3);letter-spacing:.06em;
}
.compare-table th.row-label,.compare-table td.row-label{
  text-align:left;font-weight:600;font-size:15px;color:var(--text);
  position:sticky;left:0;background:#fff;z-index:2;
  box-shadow:1px 0 0 var(--border);
}
.compare-table tbody tr:hover td{background:#FBFDFF}
.compare-table tbody tr:hover td.row-label{background:#FBFDFF}
.group-row td{
  height:44px;background:#F6F9FC !important;text-align:left !important;
  font-size:12px;font-weight:600;letter-spacing:.08em;color:var(--text-3);
}
.col-recommend{background:var(--primary-soft);}
.compare-table thead th.col-recommend{background:#DCEAF8}
.compare-table tbody tr:hover td.col-recommend{background:#DCEAF8}
.col-recommend--edge{border-left:2px solid var(--primary);border-right:2px solid var(--primary)}
.compare-table tbody tr:last-child td{border-bottom:0}
.plan-badge{
  display:inline-flex;align-items:center;justify-content:center;
  font-size:12px;font-weight:600;color:#fff;background:var(--primary);
  border-radius:var(--radius-pill);padding:3px 10px;margin-bottom:6px;
}
.plan-name{display:block;font-size:16px}
.plan-price{display:block;font-size:12px;font-weight:400;color:var(--text-3);margin-top:2px}
.mark-yes{color:var(--accent);font-size:15px}
.mark-no{color:#C6CFD8;font-size:15px}

/* ---------- 等级亮点 ---------- */
.tier-list{border-top:1px solid var(--border)}
.tier-row{
  display:flex;align-items:center;gap:56px;
  padding:44px 0;border-bottom:1px solid var(--border);
}
.tier-row:nth-child(even){flex-direction:row-reverse}
.tier-media{
  flex:0 0 44%;border-radius:var(--radius-card);overflow:hidden;
  box-shadow:var(--shadow-2);border:1px solid var(--border);
  aspect-ratio:16/10;
}
.tier-media img{width:100%;height:100%;object-fit:cover}
.tier-body{flex:1 1 auto;min-width:0}
.tier-head{display:flex;align-items:center;gap:14px;margin-bottom:8px}
.tier-num{
  font-size:clamp(48px,6vw,76px);font-weight:700;line-height:1;
  letter-spacing:-.02em;
  color:rgba(30,99,168,.14);
  -webkit-text-stroke:2px rgba(30,99,168,.45);
}
.tier-name{font-size:20px;font-weight:700}
.tier-tag{
  font-size:12px;font-weight:600;color:#B4571F;background:var(--warn-soft);
  border-radius:var(--radius-pill);padding:4px 10px;
}
.tier-desc{font-size:15px;color:var(--text-2);margin:0 0 16px;max-width:34em}
.feature-list li{
  position:relative;padding-left:26px;font-size:15px;color:var(--text-2);
  margin-bottom:10px;line-height:1.7;
}
.feature-list li::before{
  content:"";position:absolute;left:0;top:11px;
  width:9px;height:9px;border-radius:3px;background:var(--accent);
}
.feature-list li strong{color:var(--text);font-weight:600}

/* ---------- 专属内容预览 ---------- */
.preview-grid{
  display:grid;grid-template-columns:1.35fr 1fr;gap:24px;
}
.preview-card{
  position:relative;background:var(--card);border:1px solid var(--border);
  border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1);
  display:flex;flex-direction:column;
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.preview-card:hover{transform:translateY(-2px);border-color:#C9DCEF;box-shadow:var(--shadow-3)}
.preview-card--big{grid-row:span 2}
.preview-cover{position:relative;overflow:hidden;aspect-ratio:16/9;background:#EDF2F7}
.preview-card--big .preview-cover{aspect-ratio:16/10}
.preview-cover img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.preview-card:hover .preview-cover img{transform:scale(1.03)}
.tag-cat{
  position:absolute;left:12px;top:12px;z-index:2;
  font-size:12px;font-weight:600;color:#0C7E72;background:var(--accent-soft);
  border-radius:var(--radius-pill);padding:4px 11px;
}
.preview-info{padding:20px 22px 22px;flex:1 1 auto;display:flex;flex-direction:column}
.preview-info h3{font-size:17px;margin-bottom:10px;line-height:1.45}
.preview-info p{font-size:14px;color:var(--text-2);margin:0 0 14px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.preview-meta{margin-top:auto;font-size:13px;color:var(--text-3);display:flex;align-items:center;gap:10px}
.lock-mask{
  position:absolute;inset:0;z-index:3;
  background:rgba(255,255,255,.72);
  backdrop-filter:blur(1.5px);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;
  color:var(--primary-dark);font-size:13px;font-weight:600;
}
.lock-mask i{font-size:20px;color:var(--primary)}
.lock-mask span{
  background:#fff;border:1px solid #D6E5F5;border-radius:var(--radius-pill);
  padding:4px 12px;box-shadow:var(--shadow-1);
}

/* ---------- 最新信息列表 ---------- */
.news-list{display:flex;flex-direction:column;gap:16px}
.news-item{
  display:flex;gap:20px;align-items:center;
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius-card);
  padding:16px;box-shadow:var(--shadow-1);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.news-item:hover{transform:translateY(-2px);border-color:#C9DCEF;box-shadow:var(--shadow-3)}
.news-cover{
  flex:0 0 160px;width:160px;height:100px;border-radius:var(--radius-img);
  overflow:hidden;background:#EDF2F7;
}
.news-cover img{width:100%;height:100%;object-fit:cover}
.news-body{flex:1 1 auto;min-width:0}
.news-title{
  font-size:17px;font-weight:600;line-height:1.45;margin:0 0 8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-item:hover .news-title{color:var(--primary)}
.news-summary{
  font-size:14px;color:var(--text-2);margin:0 0 10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{display:flex;align-items:center;gap:12px;font-size:13px;color:var(--text-3);flex-wrap:wrap}
.news-meta .tag-cat-sm{
  font-size:12px;font-weight:600;color:#0C7E72;background:var(--accent-soft);
  border-radius:var(--radius-pill);padding:3px 10px;
}
.news-empty{
  min-height:200px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;
  background:var(--card);border:1px dashed var(--border);border-radius:var(--radius-card);
  color:var(--text-3);font-size:14px;
}
.news-empty i{font-size:24px;color:#C6CFD8}

/* ---------- 数据与保障 ---------- */
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-bottom:40px}
.stat-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow-1);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.stat-card:hover{transform:translateY(-2px);border-color:#C9DCEF;box-shadow:var(--shadow-3)}
.stat-num{
  font-size:30px;font-weight:700;color:var(--primary);
  line-height:1.2;margin-bottom:6px;letter-spacing:-.01em;
}
.stat-label{font-size:14px;color:var(--text-2)}
.assure-list{
  display:grid;grid-template-columns:repeat(3,1fr);gap:20px;
}
.assure-item{
  display:flex;gap:14px;align-items:flex-start;
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  padding:22px;box-shadow:var(--shadow-1);
}
.assure-ico{
  flex:0 0 40px;width:40px;height:40px;border-radius:12px;
  background:var(--primary-soft);color:var(--primary);
  display:flex;align-items:center;justify-content:center;font-size:16px;
}
.assure-item h3{font-size:16px;margin-bottom:6px}
.assure-item p{font-size:14px;color:var(--text-2);margin:0}

/* ---------- FAQ ---------- */
.faq{max-width:880px;margin:0 auto;display:flex;flex-direction:column;gap:14px}
.faq-item{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);overflow:hidden;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.faq-item:hover{border-color:#C9DCEF}
.faq-item.is-open{border-color:#C9DCEF;box-shadow:var(--shadow-2)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 24px;text-align:left;font-size:17px;font-weight:600;color:var(--text);
  min-height:44px;
}
.faq-icon{
  flex:0 0 22px;width:22px;height:22px;position:relative;
  transition:transform .24s ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--primary);border-radius:2px;
}
.faq-icon::before{left:0;top:10px;width:22px;height:2px}
.faq-icon::after{left:10px;top:0;width:2px;height:22px}
.faq-item.is-open .faq-icon{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-item.is-open .faq-a{max-height:360px}
.faq-a p{
  padding:0 24px 22px;margin:0;font-size:15px;line-height:1.85;color:var(--text-2);
}

/* ---------- CTA 带 ---------- */
.cta-band{
  background:linear-gradient(135deg,var(--primary) 0%,#1B5793 100%);
  border-radius:20px;padding:48px;color:#fff;
  display:flex;align-items:center;justify-content:space-between;gap:36px;
  box-shadow:0 18px 40px rgba(30,99,168,.22);
}
.cta-band h2{color:#fff;font-size:clamp(22px,2.6vw,28px);margin-bottom:10px}
.cta-band p{color:rgba(255,255,255,.86);font-size:15px;max-width:38em;margin:0}
.cta-side{flex:0 0 380px;max-width:100%}
.cta-form{display:flex;flex-direction:column;gap:12px}
.field label{
  display:block;font-size:13px;color:rgba(255,255,255,.9);margin-bottom:7px;font-weight:600;
}
.field input{
  width:100%;height:44px;padding:0 14px;border-radius:var(--radius-btn);
  border:1px solid rgba(255,255,255,.34);background:rgba(255,255,255,.96);
  color:var(--text);outline:none;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.field input::placeholder{color:var(--text-3)}
.field input:focus{border-color:#fff;box-shadow:0 0 0 3px rgba(255,255,255,.32)}
.field-error{display:none;font-size:13px;color:#FFD4C6;margin-top:6px}
.field.has-error input{border-color:var(--warn);box-shadow:0 0 0 3px rgba(242,121,59,.28)}
.field.has-error .field-error{display:block}
.cta-note{font-size:12px;color:rgba(255,255,255,.72);margin:10px 0 0}
.btn-on-accent{background:#fff;color:var(--primary);font-weight:700}
.btn-on-accent:hover{background:#EAF2FB;color:var(--primary-dark);transform:translateY(-2px)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:#B7C4D2;margin-top:88px}
.footer-inner{padding:64px 0 0}
.footer-cols{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-mark{box-shadow:none}
.footer-brand .brand-name{color:#fff}
.footer-brand .brand-tag{color:#7E8FA0}
.footer-about{font-size:14px;line-height:1.85;color:#93A5B6;max-width:30em}
.footer-col h3{
  font-size:14px;color:#fff;margin-bottom:16px;letter-spacing:.04em;font-weight:600;
}
.footer-col li{margin-bottom:11px}
.footer-col a{font-size:14px;color:#B7C4D2}
.footer-col a:hover{color:var(--accent)}
.footer-col .plain{font-size:14px;color:#B7C4D2}
.footer-bottom{
  margin-top:52px;border-top:1px solid rgba(255,255,255,.1);
  padding:22px 0;display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
  font-size:13px;color:#7E8FA0;
}
.footer-bottom a{color:#9FB3C6}
.footer-bottom a:hover{color:var(--accent)}

/* ---------- 抽屉遮罩 ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(15,34,51,.48);
  opacity:0;visibility:hidden;transition:opacity .24s ease,visibility .24s ease;z-index:70;
}
body.nav-open .drawer-mask{opacity:1;visibility:visible}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .wrap{padding:0 32px}
  .topbar{padding:0 32px}
}
@media (min-width:768px) and (max-width:1023px){
  :root{--side-w:88px}
  .side-nav{padding:22px 12px 18px;align-items:center}
  .brand{padding:6px 0 18px;justify-content:center}
  .brand-text{display:none}
  .side-group{display:none}
  .side-link{justify-content:center;padding:0;gap:0}
  .side-link .side-text{display:none}
  .side-link.is-active::before{left:-12px}
  .side-card{padding:12px 8px}
  .side-card p{display:none}
  .side-card .btn span{display:none}
  .side-card .btn{padding:12px 0}
  .footer-cols{grid-template-columns:1fr 1fr;gap:32px}
  .footer-about{max-width:none}
}
@media (max-width:1023px){
  .preview-grid{grid-template-columns:1fr}
  .preview-card--big{grid-row:auto}
  .stat-grid{grid-template-columns:repeat(2,1fr)}
  .assure-list{grid-template-columns:1fr}
  .tier-row{gap:32px}
  .tier-media{flex:0 0 42%}
  .cta-band{flex-direction:column;align-items:flex-start;padding:40px}
  .cta-side{flex:1 1 auto;width:100%}
}
@media (max-width:767px){
  :root{--top-h:56px}
  .side-nav{
    width:280px;padding:20px 16px 18px;
    transform:translateX(-100%);
    box-shadow:0 0 40px rgba(15,34,51,.18);
    z-index:90;
  }
  body.nav-open .side-nav{transform:translateX(0)}
  .app-body{margin-left:0}
  .wrap{padding:0 20px}
  .topbar{padding:0 16px;gap:10px}
  .menu-toggle{display:inline-flex}
  .search-box{display:none}
  .breadcrumb{display:none}
  .topbar-right{margin-left:auto}
  .pill{display:none}
  .hero{padding:36px 0 56px}
  .hero-media{margin-top:32px}
  .hero-actions .btn{width:100%}
  .hero h1{max-width:none}
  .section{padding:56px 0}
  .section--tight{padding:44px 0}
  .section-head{margin-bottom:32px}
  .compare-scroll-hint{display:block}
  .compare-table th,.compare-table td{padding:0 14px;font-size:14px}
  .tier-row,.tier-row:nth-child(even){flex-direction:column;align-items:stretch;gap:20px;padding:32px 0}
  .tier-media{flex:1 1 auto;aspect-ratio:16/9}
  .stat-grid{grid-template-columns:1fr}
  .news-item{flex-direction:column;align-items:stretch}
  .news-cover{flex:1 1 auto;width:100%;height:170px}
  .faq-q{font-size:16px;padding:18px 18px}
  .faq-a p{padding:0 18px 18px}
  .cta-band{padding:32px 24px;border-radius:16px}
  .footer-cols{grid-template-columns:1fr;gap:28px}
  .footer-inner{padding:44px 0 0}
  .site-footer{margin-top:56px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
}
@media (max-width:520px){
  .hero-badges{gap:8px}
  .badge-chip{height:34px;padding:0 12px;font-size:12px}
  .tier-num{font-size:52px}
  .faq-q{font-size:15px}
  .btn{padding:13px 20px}
}

/* roulang page: article */
:root{
  --brand:#1E63A8;
  --brand-dark:#154A80;
  --brand-soft:#E9F1FA;
  --accent:#12A594;
  --warn:#F2793B;
  --ink:#15202B;
  --ink-2:#4A5764;
  --ink-3:#7C8894;
  --line:#E3E9F0;
  --bg:#F6F9FC;
  --card:#FFFFFF;
  --dark:#0F2233;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --sh-1:0 1px 2px rgba(21,32,43,.05);
  --sh-2:0 6px 20px rgba(21,32,43,.07);
  --sh-3:0 14px 32px rgba(21,32,43,.10);
  --side-w:240px;
  --top-h:64px;
}
*,*::before,*::after{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;line-height:1.8;color:var(--ink);background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
body.nav-lock{overflow:hidden}
img{max-width:100%;height:auto;display:block}
a{color:var(--brand);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--brand-dark)}
h1,h2,h3,h4{margin:0;font-weight:600;line-height:1.28;color:var(--ink)}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;border:0;background:none;cursor:pointer}
input,textarea{font:inherit}
.grid-container{max-width:1200px;padding-left:40px;padding-right:40px}
:focus-visible{outline:3px solid rgba(30,99,168,.35);outline-offset:2px;border-radius:6px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--r-btn);font-size:15px;font-weight:600;
  transition:background .18s ease,color .18s ease,box-shadow .18s ease,transform .18s ease,border-color .18s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--sh-1)}
.btn-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:none;box-shadow:var(--sh-1)}
.btn-ghost{background:#fff;color:var(--brand);border:1px solid var(--line)}
.btn-ghost:hover{border-color:var(--brand);background:var(--brand-soft);color:var(--brand-dark);transform:translateY(-1px)}
.btn-warn{background:var(--warn);color:#fff}
.btn-warn:hover{background:#DE6A2E;color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-sm{padding:9px 18px;font-size:14px;border-radius:9px}
.btn-block{width:100%}

/* ---------- 左侧导航 ---------- */
.app-side{
  position:fixed;left:0;top:0;bottom:0;width:var(--side-w);background:#fff;
  border-right:1px solid var(--line);display:flex;flex-direction:column;
  padding:20px 16px 18px;z-index:70;
}
.side-logo{display:flex;align-items:center;gap:10px;padding:6px 8px 18px}
.logo-mark{
  width:38px;height:38px;flex:0 0 38px;border-radius:11px;background:var(--brand);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:17px;box-shadow:var(--sh-2)
}
.logo-text{display:flex;flex-direction:column;line-height:1.2}
.logo-name{font-size:16px;font-weight:700;color:var(--ink)}
.logo-sub{font-size:12px;color:var(--ink-3);letter-spacing:.06em}
.side-group-title{
  font-size:12px;color:var(--ink-3);letter-spacing:.08em;padding:6px 10px 8px;font-weight:600;
}
.side-links{display:flex;flex-direction:column;gap:4px;margin-top:4px}
.side-link{
  position:relative;display:flex;align-items:center;gap:12px;height:44px;padding:0 12px;
  border-radius:10px;color:var(--ink-2);font-size:15px;font-weight:500;
  transition:background .18s ease,color .18s ease;
}
.side-link i{width:20px;text-align:center;font-size:16px;color:var(--ink-3);transition:color .18s ease}
.side-link:hover{background:var(--brand-soft);color:var(--brand-dark)}
.side-link:hover i{color:var(--brand)}
.side-link.is-active{background:var(--brand-soft);color:var(--brand);font-weight:600}
.side-link.is-active i{color:var(--brand)}
.side-link.is-active::before{
  content:"";position:absolute;left:-16px;top:10px;bottom:10px;width:3px;
  background:var(--brand);border-radius:0 3px 3px 0;
}
.side-cta{
  margin-top:auto;background:var(--brand-soft);border:1px solid #D8E6F6;border-radius:var(--r-card);
  padding:16px;
}
.side-cta p{margin:0 0 12px;font-size:13px;line-height:1.6;color:var(--ink-2)}
.side-cta .btn{width:100%;padding:11px 16px;font-size:14px}

/* ---------- 顶部条 ---------- */
.app-main{margin-left:var(--side-w);min-height:100vh;display:flex;flex-direction:column}
.topbar{
  position:sticky;top:0;z-index:50;height:var(--top-h);background:#fff;border-bottom:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;padding:0 40px;
}
.menu-btn{
  display:none;width:44px;height:44px;border-radius:10px;color:var(--ink-2);font-size:18px;
  align-items:center;justify-content:center;border:1px solid var(--line);background:#fff;
}
.menu-btn:hover{background:var(--brand-soft);color:var(--brand)}
.crumbs{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-3);flex-wrap:wrap}
.crumbs a{color:var(--ink-2)}
.crumbs a:hover{color:var(--brand)}
.crumbs .sep{color:#C6CFD8}
.crumbs .now{color:var(--ink-3);max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.topbar-right{display:flex;align-items:center;gap:14px}
.pill{
  display:inline-flex;align-items:center;gap:8px;padding:7px 14px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand-dark);font-size:13px;font-weight:500;border:1px solid #D8E6F6;
}
.pill .dot-live{width:7px;height:7px;border-radius:50%;background:var(--accent);display:inline-block}

/* ---------- 页面主体 ---------- */
.page-main{flex:1 1 auto;padding:40px 0 88px}
.article-grid{
  display:grid;grid-template-columns:minmax(0,760px) 220px;gap:48px;justify-content:center;
  align-items:start;
}
.article-grid.no-toc{grid-template-columns:minmax(0,760px)}

.article-head{margin-bottom:32px}
.cat-badge{
  display:inline-flex;align-items:center;gap:6px;padding:6px 14px;border-radius:999px;
  background:rgba(18,165,148,.12);color:#0C7C70;font-size:12px;font-weight:600;letter-spacing:.02em;
}
.cat-badge:hover{background:rgba(18,165,148,.2);color:#0A6A60}
.article-title{
  font-size:clamp(30px,4vw,44px);font-weight:700;color:var(--ink);margin:18px 0 16px;letter-spacing:0;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-3);
  padding-bottom:20px;border-bottom:1px solid var(--line);
}
.article-meta .sep{color:#C6CFD8}

.lead-img{margin:28px 0 8px;border-radius:var(--r-img);overflow:hidden;box-shadow:var(--sh-2)}
.lead-img img{width:100%;aspect-ratio:16/9;object-fit:cover}
.lead-cap{font-size:13px;color:var(--ink-3);text-align:center;margin-top:10px}

/* ---------- 正文排版 ---------- */
.article-body{font-size:16px;line-height:1.85;color:#22303D;word-wrap:break-word}
.article-body > * + *{margin-top:24px}
.article-body h2{
  font-size:clamp(22px,2.4vw,28px);font-weight:600;color:var(--ink);
  border-left:4px solid var(--brand);padding-left:14px;margin-top:48px;line-height:1.35;
}
.article-body h3{font-size:20px;font-weight:600;color:var(--ink);margin-top:36px}
.article-body h4{font-size:17px;font-weight:600;color:var(--ink);margin-top:28px}
.article-body p{color:#22303D}
.article-body strong{color:var(--ink);font-weight:600}
.article-body ul,.article-body ol{padding-left:0;margin-top:20px}
.article-body li{position:relative;padding-left:22px;margin-top:10px;color:#22303D}
.article-body ul > li::before{
  content:"";position:absolute;left:0;top:.72em;width:8px;height:8px;border-radius:2px;background:var(--accent);
}
.article-body ol{counter-reset:art}
.article-body ol > li{counter-increment:art}
.article-body ol > li::before{
  content:counter(art);position:absolute;left:0;top:.1em;color:var(--brand);font-weight:700;font-size:14px;
}
.article-body blockquote{
  background:var(--brand-soft);border-left:3px solid var(--brand);border-radius:0 10px 10px 0;
  padding:16px 22px;color:var(--ink-2);font-size:15px;
}
.article-body blockquote p{color:var(--ink-2)}
.article-body img{border-radius:var(--r-img);box-shadow:var(--sh-1);margin:8px 0}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:13px;color:var(--ink-3);text-align:center;margin-top:10px}
.article-body table{
  width:100%;border-collapse:collapse;font-size:15px;background:#fff;
  border:1px solid var(--line);border-radius:var(--r-img);overflow:hidden;
}
.article-body th{background:var(--brand-soft);color:var(--ink);text-align:left;padding:13px 16px;border:1px solid var(--line);font-weight:600}
.article-body td{padding:13px 16px;border:1px solid var(--line);color:var(--ink-2)}
.article-body tbody tr:nth-child(even){background:#FAFCFE}
.article-body a{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
.article-body hr{border:0;border-top:1px solid var(--line);margin:36px 0}

/* ---------- 目录 ---------- */
.article-toc{position:sticky;top:calc(var(--top-h) + 24px)}
.toc-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);padding:18px}
.toc-title{font-size:13px;font-weight:700;color:var(--ink-3);letter-spacing:.08em;margin-bottom:12px}
.toc-list{display:flex;flex-direction:column;gap:2px;max-height:60vh;overflow-y:auto}
.toc-link{
  display:block;font-size:13px;line-height:1.6;color:var(--ink-2);padding:6px 10px;border-radius:8px;
  border-left:2px solid transparent;transition:background .18s ease,color .18s ease,border-color .18s ease;
}
.toc-link.is-sub{padding-left:20px;font-size:12.5px;color:var(--ink-3)}
.toc-link:hover{background:var(--brand-soft);color:var(--brand-dark)}
.toc-link.is-active{background:var(--brand-soft);color:var(--brand);font-weight:600;border-left-color:var(--brand)}

/* ---------- 空态 ---------- */
.empty-state{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);
  padding:56px 32px;text-align:center;
}
.empty-state i{font-size:34px;color:var(--ink-3);margin-bottom:16px;display:block}
.empty-state h2{font-size:22px;margin-bottom:12px}
.empty-state p{font-size:15px;color:var(--ink-2);max-width:440px;margin:0 auto 24px}

/* ---------- 相关板块 ---------- */
.section-block{margin-top:88px}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px;
}
.section-head h2{font-size:clamp(24px,3vw,32px)}
.section-head p{font-size:15px;color:var(--ink-2);margin-top:8px;max-width:640px}
.text-link{font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px}
.text-link i{font-size:12px;transition:transform .18s ease}
.text-link:hover i{transform:translateX(3px)}

.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.rel-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);overflow:hidden;height:100%;
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--sh-3);border-color:#C9DDF2}
.rel-cover{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--brand-soft)}
.rel-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.rel-card:hover .rel-cover img{transform:scale(1.04)}
.rel-tag{
  position:absolute;left:12px;top:12px;padding:5px 12px;border-radius:999px;
  background:rgba(255,255,255,.94);color:#0C7C70;font-size:12px;font-weight:600;
}
.rel-body{padding:20px 22px 24px;display:flex;flex-direction:column;flex:1 1 auto}
.rel-body h3{font-size:17px;line-height:1.5;margin-bottom:10px;color:var(--ink)}
.rel-body p{font-size:14px;line-height:1.7;color:var(--ink-2);margin-bottom:18px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-body .text-link{margin-top:auto}

.back-links{
  display:flex;flex-wrap:wrap;gap:12px 28px;align-items:center;margin-top:44px;
  padding-top:24px;border-top:1px solid var(--line);
}
.back-links .text-link{color:var(--ink-2)}
.back-links .text-link:hover{color:var(--brand)}

/* ---------- CTA ---------- */
.cta-band{
  margin-top:72px;background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:var(--sh-2);
  padding:40px 44px;display:flex;align-items:center;justify-content:space-between;gap:32px;
  background-image:linear-gradient(120deg,rgba(30,99,168,.06),rgba(18,165,148,.05));
}
.cta-band h2{font-size:clamp(22px,2.6vw,28px);margin-bottom:10px}
.cta-band p{font-size:15px;color:var(--ink-2);max-width:560px}
.cta-actions{display:flex;gap:12px;flex:0 0 auto;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:#C7D3DE;margin-top:88px}
.footer-inner{padding:64px 40px 28px}
.footer-cols{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer-brand .brand-mark{
  width:40px;height:40px;border-radius:11px;background:var(--brand);color:#fff;font-weight:700;
  display:flex;align-items:center;justify-content:center;font-size:14px;letter-spacing:.04em;
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-name{font-size:16px;font-weight:700;color:#fff}
.brand-tag{font-size:12px;color:#8FA4B8;letter-spacing:.05em}
.footer-about{font-size:14px;line-height:1.8;color:#9FB0C1;max-width:360px}
.footer-col h3{font-size:14px;color:#fff;margin-bottom:16px;letter-spacing:.04em}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:#9FB0C1}
.footer-col a:hover{color:#12A594}
.footer-col .plain{font-size:14px;color:#9FB0C1}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:#8FA4B8;
}
.footer-bottom a{color:#9FB0C1}
.footer-bottom a:hover{color:#12A594}

/* ---------- 遮罩 ---------- */
.nav-mask{
  position:fixed;inset:0;background:rgba(15,34,51,.45);opacity:0;visibility:hidden;
  transition:opacity .22s ease,visibility .22s ease;z-index:60;
}
.nav-mask.is-show{opacity:1;visibility:visible}

/* ---------- 平板 ---------- */
@media (max-width:1023px){
  :root{--side-w:88px}
  .app-side{padding:20px 12px 18px;align-items:center}
  .side-logo{padding:6px 0 18px;justify-content:center}
  .logo-text{display:none}
  .side-group-title{display:none}
  .side-links{width:100%}
  .side-link{justify-content:center;padding:0}
  .side-text{display:none}
  .side-link.is-active::before{left:-12px}
  .side-cta{display:none}
  .topbar{padding:0 24px}
  .grid-container{padding-left:24px;padding-right:24px}
  .footer-inner{padding:56px 24px 24px}
  .footer-cols{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:1279px){
  .article-grid{grid-template-columns:minmax(0,760px);gap:0}
  .article-toc{position:static;order:-1;margin-bottom:28px}
  .toc-list{flex-direction:row;overflow-x:auto;gap:8px;max-height:none;padding-bottom:4px}
  .toc-link{white-space:nowrap;border-left:0;border:1px solid var(--line);border-radius:999px;padding:7px 14px}
  .toc-link.is-sub{padding-left:14px}
  .toc-link.is-active{border-color:var(--brand);background:var(--brand-soft)}
}

/* ---------- 手机 ---------- */
@media (max-width:767px){
  :root{--top-h:56px}
  .app-side{
    width:280px;padding:20px 16px 18px;align-items:stretch;
    transform:translateX(-100%);transition:transform .24s ease;box-shadow:var(--sh-3);
  }
  .app-side.is-open{transform:translateX(0)}
  .side-logo{justify-content:flex-start;padding:6px 8px 18px}
  .logo-text{display:flex}
  .side-group-title{display:block}
  .side-link{justify-content:flex-start;padding:0 12px}
  .side-text{display:inline}
  .side-link.is-active::before{left:-16px}
  .side-cta{display:block}
  .app-main{margin-left:0}
  .topbar{padding:0 16px;gap:12px}
  .menu-btn{display:inline-flex}
  .crumbs .now{max-width:150px}
  .topbar-right .pill{display:none}
  .grid-container{padding-left:20px;padding-right:20px}
  .page-main{padding:24px 0 56px}
  .article-title{margin-top:14px}
  .article-meta{font-size:12.5px;gap:6px}
  .article-body{font-size:15px;line-height:1.8}
  .article-body h2{margin-top:36px}
  .rel-grid{grid-template-columns:1fr;gap:18px}
  .cta-band{flex-direction:column;align-items:flex-start;padding:28px 24px;gap:22px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .section-block{margin-top:56px}
  .footer-cols{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:8px;margin-top:36px}
  .site-footer{margin-top:56px}
}
@media (max-width:520px){
  .crumbs a:first-child{display:none}
  .btn{padding:13px 20px;min-height:44px}
  .rel-body{padding:16px 18px 20px}
}

/* roulang page: category1 */
:root{
  --primary:#1E63A8;
  --primary-dark:#154A80;
  --primary-soft:#E9F1FA;
  --teal:#12A594;
  --orange:#F2793B;
  --text:#15202B;
  --text-2:#4A5764;
  --text-3:#7C8894;
  --border:#E3E9F0;
  --bg:#F6F9FC;
  --card:#FFFFFF;
  --dark:#0F2233;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --sh-1:0 1px 2px rgba(21,32,43,.05);
  --sh-2:0 6px 20px rgba(21,32,43,.07);
  --sh-3:0 14px 32px rgba(21,32,43,.10);
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .18s ease,border-color .18s ease,background-color .18s ease}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
table{border-collapse:collapse}
:focus-visible{outline:3px solid rgba(30,99,168,.35);outline-offset:2px;border-radius:6px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
section[id],div[id]{scroll-margin-top:88px}

/* ============ 布局容器 ============ */
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 40px}
.section{padding:76px 0}
.section--tight{padding:56px 0}
.sec-head{margin-bottom:32px}
.sec-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;letter-spacing:.08em;
  color:var(--primary);background:var(--primary-soft);
  padding:5px 12px;border-radius:999px;
}
.sec-head h2{font-size:clamp(24px,3vw,32px);line-height:1.28;font-weight:700;margin-top:14px}
.sec-head p{margin-top:12px;color:var(--text-2);font-size:15px;max-width:780px}

/* ============ 侧栏 App Shell ============ */
.app-sidebar{
  position:fixed;top:0;left:0;bottom:0;width:240px;
  background:#fff;border-right:1px solid var(--border);
  display:flex;flex-direction:column;
  padding:20px 16px;z-index:60;
}
.side-brand{display:flex;align-items:center;gap:10px;padding:6px 8px 20px}
.brand-mark{
  width:36px;height:36px;flex:none;border-radius:10px;
  background:var(--primary);color:#fff;
  display:grid;place-items:center;
  font-size:13px;font-weight:700;letter-spacing:.02em;
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;min-width:0}
.brand-name{font-size:15px;font-weight:700;white-space:nowrap}
.brand-tag{font-size:12px;color:var(--text-3);white-space:nowrap}
.side-group-title{
  font-size:12px;letter-spacing:.08em;color:var(--text-3);
  padding:10px 12px 8px;font-weight:600;
}
.side-links{display:flex;flex-direction:column;gap:6px;flex:1 1 auto}
.side-link{
  position:relative;display:flex;align-items:center;gap:12px;
  height:44px;padding:0 12px;border-radius:10px;
  font-size:15px;color:var(--text-2);font-weight:500;
  transition:background-color .18s ease,color .18s ease;
}
.side-link i{width:20px;text-align:center;font-size:16px;flex:none}
.side-link:hover{background:var(--primary-soft);color:var(--primary)}
.side-link.is-active{background:var(--primary-soft);color:var(--primary);font-weight:600}
.side-link.is-active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;
  width:3px;border-radius:3px;background:var(--primary);
}
.side-member-card{
  margin-top:auto;border:1px solid var(--border);border-radius:var(--r-card);
  background:var(--bg);padding:16px;
}
.side-member-card p{font-size:13px;color:var(--text-2);line-height:1.7;margin-bottom:12px}
.side-member-card .btn{width:100%}

.drawer-mask{
  position:fixed;inset:0;background:rgba(15,34,51,.45);
  opacity:0;pointer-events:none;transition:opacity .25s ease;z-index:55;
}
body.drawer-open .drawer-mask{opacity:1;pointer-events:auto}

/* ============ 主区与顶部条 ============ */
.main-area{margin-left:240px;min-height:100vh;display:flex;flex-direction:column}
.topbar{
  position:sticky;top:0;z-index:40;height:64px;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:0 40px;background:rgba(255,255,255,.96);
  backdrop-filter:blur(8px);border-bottom:1px solid var(--border);
}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);min-width:0}
.breadcrumb a{color:var(--text-2)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:var(--text-3)}
.breadcrumb .current{color:var(--text-3);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar-actions{display:flex;align-items:center;gap:12px;flex:none}
.member-pill{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;font-weight:600;color:var(--primary);
  background:var(--primary-soft);border-radius:999px;padding:6px 14px;
}
.member-pill i{font-size:11px}
.nav-toggle{
  display:none;width:44px;height:44px;flex:none;
  align-items:center;justify-content:center;
  background:#fff;border:1px solid var(--border);border-radius:10px;
  cursor:pointer;font-size:17px;color:var(--text-2);
}
.nav-toggle:hover{border-color:var(--primary);color:var(--primary)}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;min-height:44px;
  border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:none;box-shadow:none}
.btn-ghost{background:#fff;color:var(--primary);border-color:var(--border)}
.btn-ghost:hover{border-color:var(--primary);background:var(--primary-soft);transform:translateY(-1px)}
.btn-ghost:active{transform:none}
.btn-accent{background:var(--orange);color:#fff}
.btn-accent:hover{background:#DB662A;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-accent:active{transform:none;box-shadow:none}
.btn-sm{padding:9px 18px;min-height:38px;font-size:14px}
.btn-block{width:100%}

/* ============ 首屏 ============ */
.page-hero{
  position:relative;overflow:hidden;
  background:linear-gradient(180deg,#FFFFFF 0%,#F6F9FC 100%);
  border-bottom:1px solid var(--border);
}
.page-hero::after{
  content:"";position:absolute;right:-140px;top:-120px;
  width:460px;height:460px;border-radius:56px;
  background:var(--primary-soft);transform:rotate(-12deg);z-index:0;
}
.page-hero .wrap{position:relative;z-index:1;padding-top:60px;padding-bottom:56px}
.hero-grid{align-items:center}
.hero-copy h1{
  font-size:clamp(30px,4vw,44px);line-height:1.28;font-weight:700;
  letter-spacing:0;
}
.hero-copy .lede{margin-top:18px;font-size:17px;color:var(--text-2);max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.hero-stats{
  display:flex;flex-wrap:wrap;gap:14px 36px;margin-top:32px;
  padding-top:24px;border-top:1px solid var(--border);
}
.stat{display:flex;flex-direction:column;gap:2px}
.stat b{font-size:22px;font-weight:700;color:var(--primary);line-height:1.2;font-family:Inter,var(--font)}
.stat span{font-size:13px;color:var(--text-3)}
.hero-media{margin-top:28px}
.media-frame{
  border-radius:var(--r-img);overflow:hidden;
  border:1px solid var(--border);box-shadow:var(--sh-2);background:#fff;
}
.media-frame img{width:100%;aspect-ratio:16/9;object-fit:cover}

/* ============ 内容 + 目录 布局 ============ */
.layout-grid{display:grid;grid-template-columns:minmax(0,2fr) minmax(0,1fr);gap:40px;align-items:start}
.content-col{min-width:0}
.toc-card{
  position:sticky;top:88px;
  background:#fff;border:1px solid var(--border);
  border-radius:var(--r-card);box-shadow:var(--sh-1);padding:20px;
}
.toc-title{font-size:12px;letter-spacing:.08em;color:var(--text-3);font-weight:600;margin-bottom:10px}
.toc-list{display:flex;flex-direction:column;gap:4px}
.toc-list a{
  display:block;padding:9px 12px;border-radius:8px;
  font-size:14px;color:var(--text-2);
  border-left:2px solid transparent;
}
.toc-list a:hover{background:var(--primary-soft);color:var(--primary)}
.toc-list a.is-current{
  background:var(--primary-soft);color:var(--primary);
  font-weight:600;border-left-color:var(--primary);
}
.toc-tip{
  margin-top:16px;padding-top:16px;border-top:1px solid var(--border);
  font-size:13px;color:var(--text-3);line-height:1.7;
}

/* ============ 交错图文 ============ */
.alt-row{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;padding:32px 0}
.alt-row:first-child{padding-top:0}
.alt-row + .alt-row{border-top:1px solid var(--border)}
.alt-row.reverse .alt-media{order:2}
.alt-body h3{font-size:20px;font-weight:700;display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.level-badge{
  display:inline-flex;align-items:center;
  font-size:12px;font-weight:600;color:var(--orange);
  background:rgba(242,121,59,.12);border-radius:999px;padding:4px 10px;
}
.level-badge--teal{color:var(--teal);background:rgba(18,165,148,.12)}
.alt-body p{margin-top:14px;color:var(--text-2);font-size:15px}
.check-list{margin-top:18px}
.check-list li{
  display:flex;gap:10px;align-items:flex-start;
  padding:7px 0;font-size:15px;color:var(--text-2);
}
.check-list li::before{
  content:"✓";flex:none;width:18px;height:18px;margin-top:5px;
  display:grid;place-items:center;border-radius:5px;
  background:var(--teal);color:#fff;font-size:11px;font-weight:700;
}

/* ============ 要点区 ============ */
.points-panel{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  box-shadow:var(--sh-1);padding:32px;
}
.points-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px 28px}
.point-item{display:flex;gap:14px;align-items:flex-start}
.point-num{
  flex:none;width:34px;height:34px;border-radius:10px;
  background:var(--primary-soft);color:var(--primary);
  display:grid;place-items:center;font-size:14px;font-weight:700;
  font-family:Inter,var(--font);
}
.point-item h4{font-size:16px;font-weight:600;margin-bottom:4px}
.point-item p{font-size:14px;color:var(--text-2);line-height:1.75}

/* ============ 对照表 ============ */
.table-wrap{background:#fff;border:1px solid var(--border);border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden}
.table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch}
.compare-table{width:100%;min-width:700px;border-collapse:separate;border-spacing:0;font-size:15px}
.compare-table th,.compare-table td{
  padding:0 18px;height:56px;text-align:center;vertical-align:middle;
  border-bottom:1px solid var(--border);
}
.compare-table thead th{
  background:var(--primary-soft);font-weight:700;font-size:15px;color:var(--text);
  height:62px;white-space:nowrap;
}
.compare-table thead th:first-child{text-align:left}
.compare-table tbody th{
  text-align:left;font-weight:500;color:var(--text-2);white-space:nowrap;
  position:sticky;left:0;background:#fff;z-index:2;
  box-shadow:1px 0 0 var(--border);
}
.compare-table tbody tr:hover td,.compare-table tbody tr:hover th{background:#FAFCFE}
.compare-table tbody tr:hover th{background:#FAFCFE}
.compare-table tbody tr:last-child th,
.compare-table tbody tr:last-child td{border-bottom:0}
.compare-table .group-row th{
  height:42px;background:var(--bg);color:var(--text-3);
  font-size:12px;font-weight:600;letter-spacing:.08em;text-align:left;
  position:static;box-shadow:none;
}
.compare-table .group-row:hover th{background:var(--bg)}
.compare-table .is-recommend{
  background:var(--primary-soft);
  box-shadow:inset 2px 0 0 var(--primary),inset -2px 0 0 var(--primary);
}
.compare-table tbody tr:hover .is-recommend{background:#DEEAF8}
.rec-badge{
  display:inline-block;font-size:11px;font-weight:700;color:#fff;
  background:var(--orange);border-radius:999px;padding:2px 8px;margin-right:8px;
  vertical-align:1px;
}
.cell-yes{color:var(--teal);font-weight:700}
.cell-no{color:#C6CFD8;font-weight:700}
.cell-text{color:var(--text);font-size:14px;font-weight:600}
.scroll-hint{display:none;font-size:13px;color:var(--text-3);padding:12px 18px;border-top:1px solid var(--border)}

/* ============ 场景横滚卡 ============ */
.scene-track{
  display:flex;gap:20px;overflow-x:auto;padding:4px 4px 16px;
  scroll-snap-type:x mandatory;
}
.scene-card{
  flex:0 0 320px;scroll-snap-align:start;
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  box-shadow:var(--sh-1);overflow:hidden;
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.scene-card:hover{transform:translateY(-2px);border-color:#C9DDF2;box-shadow:var(--sh-3)}
.scene-card img{width:100%;aspect-ratio:16/9;object-fit:cover}
.scene-body{padding:22px}
.scene-tag{
  display:inline-block;font-size:12px;font-weight:600;color:var(--teal);
  background:rgba(18,165,148,.12);border-radius:999px;padding:4px 10px;margin-bottom:12px;
}
.scene-body h3{font-size:17px;font-weight:600;line-height:1.45}
.scene-body p{margin-top:10px;font-size:14px;color:var(--text-2);line-height:1.75}

/* ============ FAQ ============ */
.faq-list{display:flex;flex-direction:column;gap:12px}
.faq-item{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  box-shadow:var(--sh-1);overflow:hidden;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.faq-item:hover{border-color:#C9DDF2}
.faq-item.is-open{border-color:#C9DDF2;box-shadow:var(--sh-2)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;background:none;border:0;cursor:pointer;
  font-size:17px;font-weight:600;text-align:left;line-height:1.55;
}
.faq-icon{position:relative;flex:none;width:20px;height:20px}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--primary);border-radius:2px;
  transition:transform .25s ease;
}
.faq-icon::before{left:9px;top:2px;width:2px;height:16px}
.faq-icon::after{left:2px;top:9px;width:16px;height:2px}
.faq-item.is-open .faq-icon::before{transform:rotate(90deg)}
.faq-item.is-open .faq-icon::after{opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a-inner{padding:0 22px 22px;font-size:15px;line-height:1.85;color:var(--text-2)}

/* ============ CTA 与表单 ============ */
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:28px;
  background:var(--primary-soft);border:1px solid #D3E2F4;
  border-radius:18px;padding:34px 36px;
}
.cta-band h2{font-size:clamp(21px,2.4vw,26px);font-weight:700;line-height:1.35}
.cta-band p{margin-top:10px;font-size:15px;color:var(--text-2);max-width:640px}
.cta-band .btn{flex:none}

.consult{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  box-shadow:var(--sh-1);padding:32px;
}
.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.field{display:flex;flex-direction:column;gap:8px}
.field--full{grid-column:1 / -1}
.field label{font-size:13px;font-weight:600;color:var(--text-2)}
.field input,.field select,.field textarea{
  height:44px;padding:0 14px;border-radius:var(--r-btn);
  border:1px solid var(--border);background:#fff;font-size:15px;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.field textarea{height:auto;min-height:110px;padding:12px 14px;resize:vertical;line-height:1.7}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(30,99,168,.15);
}
.form-note{font-size:13px;color:var(--text-3);margin-top:14px}
.form-feedback{
  display:none;margin-top:16px;padding:12px 16px;border-radius:10px;
  background:rgba(18,165,148,.10);color:#0B7A6D;font-size:14px;font-weight:600;
}
.form-feedback.is-visible{display:block}

/* ============ 相关分类 ============ */
.rel-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.rel-card{
  display:block;background:#fff;border:1px solid var(--border);
  border-radius:var(--r-card);box-shadow:var(--sh-1);padding:26px;
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.rel-card:hover{transform:translateY(-2px);border-color:#C9DDF2;box-shadow:var(--sh-3)}
.rel-label{font-size:12px;font-weight:600;letter-spacing:.08em;color:var(--text-3)}
.rel-card h3{margin-top:10px;font-size:18px;font-weight:600}
.rel-card p{margin-top:10px;font-size:14px;color:var(--text-2);line-height:1.75}
.rel-more{
  display:inline-flex;align-items:center;gap:8px;margin-top:18px;
  font-size:14px;font-weight:600;color:var(--primary);
}
.rel-card:hover .rel-more i{transform:translateX(3px)}
.rel-more i{transition:transform .18s ease}

/* ============ 页脚 ============ */
.site-footer{background:var(--dark);color:#C4D2DE;margin-top:auto}
.footer-inner{padding:64px 0 0}
.footer-cols{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:40px;padding-bottom:48px;
}
.footer-brand{display:flex;align-items:center;gap:12px}
.site-footer .brand-mark{background:rgba(255,255,255,.12);color:#fff}
.site-footer .brand-name{color:#fff}
.site-footer .brand-tag{color:#8FA4B6}
.footer-about{margin-top:18px;font-size:14px;line-height:1.85;color:#9DB0C0;max-width:380px}
.footer-col h3{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:#9DB0C0}
.footer-col a:hover{color:var(--teal)}
.footer-col .plain{font-size:14px;color:#9DB0C0;line-height:1.7}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  border-top:1px solid rgba(255,255,255,.10);padding:22px 0 28px;
  font-size:13px;color:#7E93A5;
}
.footer-bottom a{color:#7E93A5}
.footer-bottom a:hover{color:var(--teal)}

/* ============ 响应式 ============ */
@media (min-width:768px) and (max-width:1023px){
  .app-sidebar{width:88px;padding:18px 12px;align-items:center}
  .brand-text,.side-text,.side-group-title,.side-member-card{display:none}
  .side-brand{padding:6px 0 18px;justify-content:center}
  .side-links{align-items:center;width:100%}
  .side-link{justify-content:center;padding:0;width:44px}
  .main-area{margin-left:88px}
  .topbar{padding:0 24px}
  .wrap{padding:0 24px}
  .layout-grid{grid-template-columns:minmax(0,1fr) 300px;gap:28px}
  .points-grid{grid-template-columns:1fr}
  .footer-cols{grid-template-columns:1fr 1fr;gap:32px}
}

@media (max-width:900px){
  .alt-row{grid-template-columns:1fr;gap:26px;padding:28px 0}
  .alt-row.reverse .alt-media{order:0}
}

@media (max-width:767px){
  body{font-size:15px}
  .app-sidebar{
    left:auto;right:0;width:280px;padding:20px 16px;
    transform:translateX(100%);transition:transform .28s ease;
    box-shadow:-12px 0 32px rgba(21,32,43,.12);
  }
  body.drawer-open .app-sidebar{transform:translateX(0)}
  body.drawer-open{overflow:hidden}
  .brand-text{display:flex}
  .side-text{display:inline}
  .side-group-title{display:block}
  .side-member-card{display:block}
  .main-area{margin-left:0}
  .topbar{height:56px;padding:0 16px;gap:12px}
  .nav-toggle{display:inline-flex}
  .breadcrumb{font-size:12px;flex:1 1 auto}
  .member-pill{display:none}
  .topbar-actions .btn{padding:10px 16px;min-height:40px;font-size:14px}
  .wrap{padding:0 20px}
  .section{padding:52px 0}
  .page-hero .wrap{padding-top:40px;padding-bottom:40px}
  .page-hero::after{width:280px;height:280px;right:-120px;top:-100px}
  .layout-grid{grid-template-columns:minmax(0,1fr);gap:26px}
  .toc-card{
    position:static;display:flex;gap:10px;align-items:center;
    overflow-x:auto;padding:12px;border-radius:12px;
  }
  .toc-title{display:none}
  .toc-list{flex-direction:row;gap:8px}
  .toc-list a{white-space:nowrap;border:1px solid var(--border);border-left:1px solid var(--border);border-radius:999px;padding:8px 14px;font-size:13px}
  .toc-list a.is-current{border-color:var(--primary)}
  .toc-tip{display:none}
  .hero-stats{gap:12px 24px;margin-top:26px;padding-top:20px}
  .stat b{font-size:19px}
  .hero-actions .btn{width:100%}
  .points-panel{padding:22px}
  .points-grid{grid-template-columns:1fr;gap:18px}
  .scroll-hint{display:block}
  .cta-band{flex-direction:column;align-items:flex-start;padding:26px 22px}
  .cta-band .btn{width:100%}
  .consult{padding:22px}
  .form-grid{grid-template-columns:1fr;gap:16px}
  .form-grid .btn{width:100%}
  .rel-grid{grid-template-columns:1fr}
  .scene-card{flex:0 0 82%}
  .footer-inner{padding-top:48px}
  .footer-cols{grid-template-columns:1fr;gap:28px;padding-bottom:32px}
  .footer-about{max-width:none}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
}

@media (min-width:768px){
  .drawer-mask{display:none}
}

/* roulang page: category2 */
:root{
  --brand:#1E63A8;
  --brand-dark:#154A80;
  --brand-soft:#E9F1FA;
  --teal:#12A594;
  --teal-soft:#E4F5F2;
  --orange:#F2793B;
  --ink:#15202B;
  --muted:#4A5764;
  --weak:#7C8894;
  --line:#E3E9F0;
  --bg:#F6F9FC;
  --card:#FFFFFF;
  --dark:#0F2233;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --sh-1:0 1px 2px rgba(21,32,43,.05);
  --sh-2:0 6px 20px rgba(21,32,43,.07);
  --sh-3:0 14px 32px rgba(21,32,43,.10);
  --side-w:240px;
  --top-h:64px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Inter","PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:#FFFFFF;
  -webkit-font-smoothing:antialiased;
}
body.no-scroll{overflow:hidden}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
a{color:var(--brand);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--brand-dark)}
img{max-width:100%;display:block}
button{font-family:inherit}
ul,ol{padding-left:0}
:focus-visible{outline:3px solid rgba(30,99,168,.30);outline-offset:2px;border-radius:6px}

/* ---------- 布局骨架 ---------- */
.layout{
  min-height:100vh;
  margin-left:var(--side-w);
  display:flex;
  flex-direction:column;
  background:#FFFFFF;
}
.wrap{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 40px;
}

/* ---------- 左侧导航 ---------- */
.app-side{
  position:fixed;
  left:0;top:0;bottom:0;
  width:var(--side-w);
  background:#FFFFFF;
  border-right:1px solid var(--line);
  padding:22px 16px 20px;
  display:flex;
  flex-direction:column;
  z-index:40;
  transition:transform .26s ease;
  overflow-y:auto;
}
.brand{
  display:flex;
  align-items:center;
  gap:11px;
  color:var(--ink);
  margin-bottom:26px;
}
.brand:hover{color:var(--ink)}
.brand-mark{
  flex:0 0 auto;
  width:38px;height:38px;
  border-radius:11px;
  background:var(--brand);
  color:#fff;
  display:grid;
  place-items:center;
  font-size:14px;
  font-weight:700;
  letter-spacing:.02em;
}
.brand-name{
  display:block;
  font-size:15.5px;
  font-weight:700;
  line-height:1.25;
  color:var(--ink);
}
.brand-tag{
  display:inline-block;
  font-size:11px;
  line-height:1.4;
  color:var(--weak);
}
.side-group-title{
  font-size:12px;
  letter-spacing:.08em;
  color:var(--weak);
  margin:0 0 10px 10px;
}
.side-links{display:grid;gap:6px}
.side-link{
  position:relative;
  display:flex;
  align-items:center;
  gap:11px;
  height:44px;
  padding:0 12px;
  border-radius:10px;
  font-size:15px;
  color:var(--muted);
  transition:background .16s ease,color .16s ease;
}
.side-link i{width:20px;text-align:center;font-size:15px}
.side-link:hover{background:var(--brand-soft);color:var(--brand-dark)}
.side-link.is-active{background:var(--brand-soft);color:var(--brand);font-weight:600}
.side-link.is-active::before{
  content:"";
  position:absolute;
  left:0;top:10px;bottom:10px;
  width:3px;
  border-radius:3px;
  background:var(--brand);
}
.side-card{
  margin-top:auto;
  background:var(--bg);
  border:1px solid var(--line);
  border-radius:12px;
  padding:16px;
}
.side-card p{
  font-size:13px;
  line-height:1.65;
  color:var(--muted);
  margin:0 0 12px;
}
.side-card .btn{width:100%}
.side-mask{
  position:fixed;
  inset:0;
  background:rgba(15,34,51,.45);
  opacity:0;
  visibility:hidden;
  transition:opacity .22s ease,visibility .22s ease;
  z-index:35;
  border:0;
  padding:0;
}
.side-mask.is-show{opacity:1;visibility:visible}

/* ---------- 顶部条 ---------- */
.topbar{
  position:sticky;
  top:0;
  z-index:30;
  height:var(--top-h);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:0 40px;
  background:#FFFFFF;
  border-bottom:1px solid var(--line);
}
.topbar-left{display:flex;align-items:center;gap:14px;min-width:0}
.menu-btn{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--line);
  border-radius:10px;
  background:#fff;
  color:var(--ink);
  cursor:pointer;
  font-size:16px;
}
.crumbs{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--weak);
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}
.crumbs a{color:var(--weak)}
.crumbs a:hover{color:var(--brand)}
.crumbs .sep{color:#C6CFD8}
.crumbs .current{color:var(--weak)}
.topbar-right{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.status-pill{
  display:inline-flex;
  align-items:center;
  gap:7px;
  padding:6px 14px;
  border-radius:999px;
  background:var(--brand-soft);
  color:var(--brand-dark);
  font-size:13px;
  font-weight:500;
  white-space:nowrap;
}
.status-pill i{font-size:11px;color:var(--teal)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:13px 26px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  line-height:1;
  cursor:pointer;
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
  min-height:44px;
  text-align:center;
}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px);box-shadow:0 8px 18px rgba(30,99,168,.22)}
.btn-primary:active{transform:none;box-shadow:none}
.btn-ghost{background:#fff;color:var(--brand);border-color:#BCD3E8}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-dark);border-color:var(--brand)}
.btn-ghost:active{transform:none}
.btn-join{background:var(--orange);color:#fff}
.btn-join:hover{background:#DE6A2E;color:#fff;transform:translateY(-1px)}
.btn-join:active{transform:none}
.btn-sm{padding:9px 18px;font-size:14px;min-height:38px;border-radius:9px}
.btn-block{width:100%}

/* ---------- 标签 ---------- */
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 13px;
  border-radius:999px;
  font-size:12px;
  font-weight:600;
  background:var(--brand-soft);
  color:var(--brand-dark);
  line-height:1.4;
}
.tag-teal{background:var(--teal-soft);color:#0B7C70}
.tag-orange{background:#FDECE0;color:#B9531A}

/* ---------- 首屏 ---------- */
.page-hero{
  background:var(--bg);
  border-bottom:1px solid var(--line);
  padding:56px 0 64px;
  position:relative;
  overflow:hidden;
}
.page-hero::after{
  content:"";
  position:absolute;
  right:-160px;top:-120px;
  width:520px;height:420px;
  background:linear-gradient(180deg,rgba(30,99,168,.07),rgba(30,99,168,0));
  transform:skewX(-14deg);
  pointer-events:none;
}
.hero-grid{
  position:relative;
  z-index:1;
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:52px;
  align-items:center;
}
.hero-copy .crumbs{margin-bottom:20px}
.hero-copy h1{
  font-size:clamp(30px,4vw,44px);
  line-height:1.28;
  font-weight:700;
  letter-spacing:0;
  margin:16px 0 18px;
  color:var(--ink);
}
.lede{
  font-size:16.5px;
  line-height:1.8;
  color:var(--muted);
  max-width:560px;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-top:28px;
}
.hero-stats{
  display:flex;
  flex-wrap:wrap;
  gap:14px 42px;
  margin-top:34px;
  padding-top:22px;
  border-top:1px solid var(--line);
}
.hero-stat strong{
  display:block;
  font-size:26px;
  font-weight:700;
  color:var(--brand);
  line-height:1.2;
  letter-spacing:0;
}
.hero-stat span{
  display:block;
  font-size:13px;
  color:var(--weak);
  margin-top:4px;
}
.hero-media{
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-2);
  border:1px solid var(--line);
  background:#fff;
}
.hero-media img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
}

/* ---------- 横向标签条 ---------- */
.tabbar-wrap{
  position:sticky;
  top:var(--top-h);
  z-index:20;
  background:#FFFFFF;
  border-bottom:1px solid var(--line);
}
.tabbar{
  display:flex;
  gap:32px;
  overflow-x:auto;
  scrollbar-width:none;
}
.tabbar::-webkit-scrollbar{display:none}
.tabbar a{
  position:relative;
  padding:17px 2px;
  font-size:15px;
  font-weight:500;
  color:var(--muted);
  white-space:nowrap;
  border-bottom:2px solid transparent;
}
.tabbar a:hover{color:var(--brand)}
.tabbar a.is-active{color:var(--brand);font-weight:600;border-bottom-color:var(--brand)}

/* ---------- 板块 ---------- */
.section{padding:88px 0}
.section-alt{background:var(--bg);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-tight{padding-top:64px}
.sec-head{max-width:760px;margin-bottom:44px}
.eyebrow{
  display:inline-block;
  font-size:13px;
  font-weight:600;
  color:var(--teal);
  margin-bottom:12px;
  letter-spacing:0;
}
h2{
  font-size:clamp(24px,3vw,32px);
  font-weight:700;
  line-height:1.3;
  color:var(--ink);
}
h3{
  font-size:19px;
  font-weight:600;
  line-height:1.45;
  color:var(--ink);
}
.body-text{
  font-size:16px;
  line-height:1.85;
  color:var(--muted);
  margin-top:16px;
}

/* ---------- 图文交错 ---------- */
.feature{
  align-items:center;
}
.feature-copy{padding:0 12px}
.feature-media{padding:0 12px}
.feature-media img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  border-radius:var(--r-card);
  border:1px solid var(--line);
  box-shadow:var(--sh-2);
}
.feature-copy .btn{margin-top:26px}
.feature + .feature-gap{margin-top:72px}

.check-list{
  list-style:none;
  display:grid;
  gap:13px;
  margin:24px 0 0;
}
.check-list li{
  position:relative;
  padding-left:32px;
  font-size:15px;
  line-height:1.7;
  color:var(--ink);
}
.check-list li::before{
  content:"\f00c";
  font-family:"Font Awesome 6 Free";
  font-weight:900;
  position:absolute;
  left:0;top:3px;
  width:20px;height:20px;
  border-radius:50%;
  background:var(--teal-soft);
  color:var(--teal);
  font-size:10px;
  display:flex;
  align-items:center;
  justify-content:center;
}

.step-list{
  list-style:none;
  counter-reset:step;
  display:grid;
  gap:16px;
  margin:26px 0 0;
}
.step-list li{
  position:relative;
  counter-increment:step;
  padding:0 0 0 46px;
  font-size:15px;
  line-height:1.7;
  color:var(--ink);
  min-height:32px;
}
.step-list li::before{
  content:counter(step);
  position:absolute;
  left:0;top:0;
  width:30px;height:30px;
  border-radius:9px;
  background:var(--brand-soft);
  color:var(--brand);
  font-weight:700;
  font-size:14px;
  display:flex;
  align-items:center;
  justify-content:center;
}
.step-list li strong{display:block;font-weight:600;color:var(--ink)}
.step-list li span{display:block;font-size:14px;color:var(--muted);margin-top:2px}

/* ---------- 表格 ---------- */
.table-card{
  margin-top:40px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-2);
  overflow:hidden;
}
.spec-table{
  width:100%;
  border-collapse:collapse;
  font-size:15px;
}
.spec-table caption{
  text-align:left;
  padding:20px 24px 0;
  font-size:13px;
  color:var(--weak);
}
.spec-table th{
  background:var(--brand-soft);
  color:var(--brand-dark);
  font-size:14px;
  font-weight:600;
  text-align:left;
  padding:14px 24px;
  white-space:nowrap;
}
.spec-table td{
  padding:17px 24px;
  border-top:1px solid var(--line);
  color:var(--muted);
}
.spec-table td:first-child{
  color:var(--ink);
  font-weight:600;
}
.spec-table tbody tr:nth-child(even){background:#FAFCFE}
.spec-table tbody tr:hover{background:var(--brand-soft)}

/* ---------- 规格卡组 ---------- */
.spec-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:24px;
  margin-top:44px;
}
.spec-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:30px;
  box-shadow:var(--sh-1);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.spec-card:hover{transform:translateY(-2px);border-color:#C9DCF0;box-shadow:var(--sh-3)}
.spec-card .k{
  font-size:13px;
  color:var(--weak);
  margin-bottom:10px;
}
.spec-card .v{
  font-size:22px;
  font-weight:700;
  color:var(--brand);
  line-height:1.35;
  margin-bottom:12px;
}
.spec-card p{
  font-size:14.5px;
  line-height:1.78;
  color:var(--muted);
}

/* ---------- 说明提示 ---------- */
.note-box{
  margin-top:28px;
  background:var(--brand-soft);
  border-left:3px solid var(--brand);
  border-radius:0 12px 12px 0;
  padding:20px 24px;
  font-size:14.5px;
  line-height:1.8;
  color:var(--brand-dark);
}
.note-box strong{font-weight:600}

/* ---------- FAQ ---------- */
.faq{
  display:grid;
  gap:14px;
  max-width:920px;
  margin:44px auto 0;
}
.faq-item{
  background:#fff;
  border:1px solid var(--line);
  border-radius:12px;
  overflow:hidden;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.faq-item:hover{border-color:#C9DCF0;box-shadow:var(--sh-1)}
.faq-item.is-open{border-color:#BCD3E8;box-shadow:var(--sh-2)}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:20px 24px;
  background:none;
  border:0;
  text-align:left;
  font-size:17px;
  font-weight:600;
  color:var(--ink);
  cursor:pointer;
  line-height:1.5;
}
.faq-q i{
  flex:0 0 auto;
  color:var(--brand);
  font-size:15px;
  transition:transform .24s ease;
}
.faq-item.is-open .faq-q i{transform:rotate(45deg)}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .3s ease;
}
.faq-item.is-open .faq-a{max-height:360px}
.faq-a p{
  padding:0 24px 22px;
  font-size:15px;
  line-height:1.85;
  color:var(--muted);
}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--brand);
  border-radius:18px;
  padding:46px 48px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:36px;
  box-shadow:var(--sh-2);
}
.cta-band h2{color:#fff;font-size:clamp(22px,2.6vw,28px)}
.cta-band p{
  color:rgba(255,255,255,.86);
  font-size:15px;
  line-height:1.8;
  margin-top:12px;
  max-width:560px;
}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;flex:0 0 auto}
.cta-band .btn-ghost{background:transparent;border-color:rgba(255,255,255,.6);color:#fff}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.14);border-color:#fff;color:#fff}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--dark);
  color:#9DB0C3;
  padding:64px 0 0;
  margin-top:88px;
}
.footer-cols{
  display:grid;
  grid-template-columns:1.7fr 1fr 1fr 1.3fr;
  gap:40px;
  padding-bottom:44px;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:12px;
  margin-bottom:18px;
}
.footer-brand .brand-mark{
  width:40px;height:40px;
  border-radius:12px;
  font-size:13px;
}
.footer-brand .brand-name{color:#fff;font-size:16px}
.footer-brand .brand-tag{color:#8FA6BB;font-size:12px}
.footer-about{
  font-size:14px;
  line-height:1.85;
  color:#93A8BC;
}
.footer-col h3{
  color:#fff;
  font-size:14px;
  font-weight:600;
  margin-bottom:16px;
}
.footer-col ul{
  list-style:none;
  display:grid;
  gap:11px;
}
.footer-col a{
  color:#9DB0C3;
  font-size:14px;
  transition:color .16s ease;
}
.footer-col a:hover{color:var(--teal)}
.footer-col .plain{
  display:block;
  color:#8FA6BB;
  font-size:14px;
  line-height:1.7;
}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);
  padding:22px 0;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:#7E93A8;
}
.footer-bottom a{color:#9DB0C3}
.footer-bottom a:hover{color:var(--teal)}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .wrap{padding:0 32px}
  .topbar{padding:0 32px}
}
@media (min-width:768px) and (max-width:1023px){
  :root{--side-w:88px}
  .app-side{padding:20px 10px;align-items:center}
  .brand{justify-content:center;margin-bottom:22px}
  .brand-text,.side-group-title,.side-card,.side-link .side-text{display:none}
  .side-link{justify-content:center;padding:0;width:52px}
  .side-links{justify-items:center}
  .side-link.is-active::before{left:-8px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .page-hero{padding:48px 0 56px}
  .cta-band{flex-direction:column;align-items:flex-start;padding:36px 32px}
  .footer-cols{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  :root{--side-w:280px;--top-h:56px}
  body{font-size:15px}
  .layout{margin-left:0}
  .app-side{transform:translateX(-100%);padding:20px 16px}
  .app-side.is-open{transform:translateX(0);box-shadow:var(--sh-3)}
  .menu-btn{display:inline-flex;align-items:center;justify-content:center}
  .wrap{padding:0 20px}
  .topbar{padding:0 16px;height:var(--top-h)}
  .crumbs{font-size:12px}
  .status-pill{display:none}
  .page-hero{padding:36px 0 44px}
  .hero-grid{grid-template-columns:1fr;gap:30px}
  .hero-copy h1{margin:14px 0 14px}
  .lede{font-size:15px}
  .hero-actions{gap:12px}
  .hero-actions .btn{width:100%}
  .hero-stats{gap:14px 28px;margin-top:26px}
  .hero-stat strong{font-size:22px}
  .section{padding:56px 0}
  .section-tight{padding-top:44px}
  .sec-head{margin-bottom:32px}
  .tabbar{gap:22px}
  .tabbar a{padding:14px 0;font-size:14px}
  .feature-media{margin-bottom:26px}
  .feature-copy{padding:0 12px}
  .feature-media{padding:0 12px}
  .spec-grid{grid-template-columns:1fr;margin-top:32px}
  .spec-card{padding:24px}
  .faq-q{padding:17px 18px;font-size:16px}
  .faq-a p{padding:0 18px 20px}
  .cta-band{padding:32px 24px;flex-direction:column;align-items:flex-start;gap:24px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .site-footer{padding-top:48px;margin-top:56px}
  .footer-cols{grid-template-columns:1fr;gap:32px;padding-bottom:32px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px}
  /* 表格降级为卡片 */
  .spec-table,.spec-table tbody,.spec-table tr,.spec-table td{display:block;width:100%}
  .spec-table thead{display:none}
  .spec-table tr{
    border:1px solid var(--line);
    border-radius:12px;
    padding:8px 16px;
    margin-bottom:14px;
    background:#fff;
  }
  .spec-table td{
    display:flex;
    align-items:baseline;
    justify-content:space-between;
    gap:16px;
    padding:9px 0;
    border-top:0;
    border-bottom:1px dashed var(--line);
    font-size:14.5px;
  }
  .spec-table tr td:last-child{border-bottom:0}
  .spec-table td::before{
    content:attr(data-label);
    flex:0 0 auto;
    color:var(--weak);
    font-size:13px;
    font-weight:500;
  }
  .spec-table td:first-child{
    border-bottom:1px solid var(--line);
    font-size:16px;
  }
  .table-card{background:transparent;border:0;box-shadow:none;overflow:visible;margin-top:30px}
}
@media (max-width:520px){
  .hero-stats{gap:16px 24px}
  .btn{padding:12px 20px;font-size:15px}
  .btn-sm{min-height:40px}
  .feature-media img{aspect-ratio:16/10}
}