/* roulang page: index */
:root{
  --ink:#0a1830;
  --ink-2:#102a4d;
  --primary:#1f5fd6;
  --primary-dark:#164aa8;
  --accent:#0d9488;
  --accent-soft:#e6f5f3;
  --bg:#f4f7fc;
  --surface:#ffffff;
  --text:#1a2433;
  --muted:#5b6b83;
  --line:#e3e9f3;
  --radius:16px;
  --radius-sm:10px;
  --shadow-sm:0 2px 10px rgba(13,32,64,.06);
  --shadow-md:0 14px 34px rgba(13,32,64,.10);
  --container:1180px;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body.site-body{
  margin:0;
  padding:0;
  background:var(--bg);
  color:var(--text);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0;}
ul,ol{list-style:none;}
a{color:var(--primary);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--primary-dark);}
img{max-width:100%;height:auto;display:block;}
button{font-family:inherit;}
.site-container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 22px;
}
.site-section{padding:64px 0;}
.site-section.alt{background:#eef3fb;}
.section-head{max-width:820px;margin-bottom:30px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.06em;
  color:var(--accent);background:var(--accent-soft);
  padding:5px 12px;border-radius:999px;margin-bottom:14px;
}
.section-title{
  font-size:clamp(21px,2.6vw,29px);
  line-height:1.45;
  font-weight:700;
  color:var(--ink);
  letter-spacing:.01em;
}
.section-desc{margin-top:12px;color:var(--muted);font-size:15.5px;}

/* 顶部导航 */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#fff;
  border-bottom:1px solid var(--line);
  box-shadow:0 4px 18px rgba(13,32,64,.05);
}
.topbar-main{
  display:flex;align-items:center;gap:20px;
  padding:14px 0 12px;
  flex-wrap:wrap;
}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.brand-mark{
  width:44px;height:44px;border-radius:13px;
  background:linear-gradient(145deg,var(--primary),var(--accent));
  color:#fff;display:flex;align-items:center;justify-content:center;
  font-size:19px;font-weight:700;letter-spacing:.02em;
  box-shadow:0 8px 18px rgba(31,95,214,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.28;}
.brand-name{font-size:19px;font-weight:700;color:var(--ink);}
.brand-sub{font-size:12px;color:var(--muted);letter-spacing:.08em;}
.topbar-search{
  flex:1 1 260px;min-width:0;display:flex;align-items:center;
  background:#f2f5fb;border:1px solid var(--line);
  border-radius:999px;padding:4px 6px 4px 16px;
}
.topbar-search i{color:#9aa8bd;font-size:13px;margin-right:8px;}
.topbar-search input{
  flex:1 1 auto;min-width:0;border:0;background:transparent;
  font-size:14px;color:var(--text);padding:8px 0;outline:none;
}
.topbar-search input::placeholder{color:#9aa8bd;}
.topbar-search button{
  border:0;border-radius:999px;background:var(--ink);
  color:#fff;font-size:13px;padding:7px 16px;cursor:pointer;
  transition:background .18s ease;
}
.topbar-search button:hover{background:var(--primary);}
.topbar-cta{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.channel-bar{
  border-top:1px solid var(--line);
  background:#fff;
}
.channel-tabs{
  display:flex;align-items:center;gap:6px;
  overflow-x:auto;white-space:nowrap;
  padding:0 22px;max-width:var(--container);margin:0 auto;
  -webkit-overflow-scrolling:touch;
  scrollbar-width:none;
}
.channel-tabs::-webkit-scrollbar{display:none;}
.channel-tabs a{
  display:inline-block;padding:13px 14px;
  font-size:14.5px;color:var(--muted);font-weight:500;
  border-bottom:2px solid transparent;
  transition:color .18s ease,border-color .18s ease;
}
.channel-tabs a:hover{color:var(--primary);}
.channel-tabs a.is-active{color:var(--primary);border-bottom-color:var(--primary);font-weight:700;}

/* 按钮 */
.site-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 22px;border-radius:999px;
  font-size:14.5px;font-weight:600;line-height:1.2;
  border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease,background .18s ease,color .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.site-btn:focus-visible{outline:3px solid rgba(31,95,214,.35);outline-offset:2px;}
.site-btn-primary{background:var(--primary);color:#fff;box-shadow:0 10px 22px rgba(31,95,214,.24);}
.site-btn-primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-2px);}
.site-btn-accent{background:var(--accent);color:#fff;box-shadow:0 10px 22px rgba(13,148,136,.22);}
.site-btn-accent:hover{background:#0b7f75;color:#fff;transform:translateY(-2px);}
.site-btn-outline{background:#fff;color:var(--ink);border-color:var(--line);}
.site-btn-outline:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px);}
.site-btn-light{background:rgba(255,255,255,.14);color:#fff;border-color:rgba(255,255,255,.34);}
.site-btn-light:hover{background:rgba(255,255,255,.24);color:#fff;transform:translateY(-2px);}
.site-btn-sm{padding:8px 16px;font-size:13px;}

/* Hero */
.hero{
  position:relative;overflow:hidden;color:#fff;
  background:
    radial-gradient(900px 420px at 12% -10%, rgba(31,95,214,.55), transparent 62%),
    radial-gradient(700px 380px at 92% 8%, rgba(13,148,136,.40), transparent 60%),
    linear-gradient(180deg,#08152a 0%,#0d2444 100%);
  padding:60px 0 54px;
}
.hero::after{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:60px 60px;pointer-events:none;opacity:.55;
}
.hero-inner{position:relative;z-index:2;}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.05em;
  padding:6px 14px;border-radius:999px;
  background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.22);
  color:#d6e6ff;margin-bottom:18px;
}
.hero h1{
  font-size:clamp(25px,3.5vw,40px);
  line-height:1.35;font-weight:800;letter-spacing:.01em;
  max-width:900px;
}
.hero-lead{
  margin-top:16px;max-width:860px;
  font-size:15.5px;line-height:1.9;color:#c6d6ee;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
.hero-kpis{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
  gap:14px;margin-top:32px;
}
.kpi{
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.16);
  border-radius:var(--radius);padding:16px 18px;min-width:0;
}
.kpi-label{font-size:12.5px;color:#9fb6d6;letter-spacing:.05em;}
.kpi-value{font-size:17px;font-weight:700;color:#fff;margin-top:4px;line-height:1.5;}
.kpi-note{font-size:12.5px;color:#a9c0dd;margin-top:4px;}

/* 路线节点条 */
.roadmap{
  margin-top:34px;position:relative;z-index:2;
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.16);
  border-radius:20px;padding:22px;
}
.roadmap-title{
  display:flex;align-items:center;gap:10px;
  font-size:14px;font-weight:700;color:#dbe8fb;letter-spacing:.04em;
  margin-bottom:16px;
}
.roadmap-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;}
.road-node{
  position:relative;min-width:0;
  background:rgba(255,255,255,.07);
  border:1px solid rgba(255,255,255,.14);
  border-radius:14px;padding:14px 15px;
  transition:background .2s ease,transform .2s ease;
}
.road-node:hover{background:rgba(255,255,255,.13);transform:translateY(-2px);}
.road-step{
  display:inline-flex;align-items:center;justify-content:center;
  width:24px;height:24px;border-radius:8px;
  background:var(--accent);color:#fff;font-size:12.5px;font-weight:700;
  margin-bottom:8px;
}
.road-node h3{font-size:14.5px;font-weight:700;color:#fff;line-height:1.5;}
.road-node p{font-size:12.8px;color:#a9c0dd;margin-top:5px;line-height:1.6;}
.subbar{
  margin-top:18px;display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  background:rgba(255,255,255,.10);
  border:1px solid rgba(255,255,255,.2);
  border-radius:16px;padding:14px 16px;
}
.subbar-label{font-size:13.5px;color:#dbe8fb;font-weight:600;flex:0 0 auto;}
.subbar form{display:flex;flex-wrap:wrap;gap:10px;flex:1 1 320px;min-width:0;}
.subbar input{
  flex:1 1 200px;min-width:0;border:1px solid rgba(255,255,255,.26);
  background:rgba(255,255,255,.10);color:#fff;
  border-radius:999px;padding:9px 16px;font-size:13.5px;outline:none;
}
.subbar input::placeholder{color:#a9c0dd;}
.subbar input:focus{border-color:#7fb0ff;box-shadow:0 0 0 3px rgba(127,176,255,.22);}
.subbar-note{font-size:12.5px;color:#a9c0dd;flex:1 1 100%;}

/* 下载区 */
.download-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;}
.download-card{
  display:flex;flex-direction:column;min-width:0;
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius);padding:24px;
  box-shadow:var(--shadow-sm);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.download-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#c9d8ef;}
.download-icon{
  width:48px;height:48px;border-radius:14px;
  display:flex;align-items:center;justify-content:center;
  font-size:20px;color:#fff;margin-bottom:14px;
}
.download-icon.pc{background:linear-gradient(145deg,#1f5fd6,#3b82f6);}
.download-icon.android{background:linear-gradient(145deg,#0d9488,#22c55e);}
.download-icon.ios{background:linear-gradient(145deg,#0a1830,#3b567c);}
.download-card h3{font-size:17px;font-weight:700;color:var(--ink);}
.download-card p{font-size:13.8px;color:var(--muted);margin-top:8px;line-height:1.7;flex:1 1 auto;}
.file-name{
  display:inline-block;margin:14px 0 16px;
  font-size:12.5px;color:#42556f;background:#f2f5fb;
  border:1px solid var(--line);border-radius:8px;padding:4px 10px;
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
.download-tip{
  margin-top:20px;display:flex;gap:12px;align-items:flex-start;
  background:#fff7ed;border:1px solid #fed7aa;border-radius:12px;
  padding:14px 16px;font-size:13.5px;color:#8a4b12;line-height:1.7;
}
.download-tip i{margin-top:4px;color:#ea8c2f;}

/* 功能卡 */
.feature-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;}
.feature-card{
  min-width:0;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;box-shadow:var(--shadow-sm);
  transition:transform .2s ease,box-shadow .2s ease;
}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);}
.feature-ico{
  width:42px;height:42px;border-radius:12px;
  background:var(--accent-soft);color:#0b7f75;
  display:flex;align-items:center;justify-content:center;
  font-size:17px;margin-bottom:14px;
}
.feature-card h3{font-size:16.5px;color:var(--ink);font-weight:700;}
.feature-card p{font-size:14px;color:var(--muted);margin-top:8px;line-height:1.72;}

/* 场景 */
.scene-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;}
.scene-card{
  display:flex;gap:16px;min-width:0;
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius);padding:22px;
  box-shadow:var(--shadow-sm);
}
.scene-num{
  flex:0 0 auto;width:38px;height:38px;border-radius:11px;
  background:var(--ink);color:#fff;font-weight:700;font-size:15px;
  display:flex;align-items:center;justify-content:center;
}
.scene-body{min-width:0;}
.scene-body h3{font-size:16px;color:var(--ink);font-weight:700;}
.scene-body p{font-size:14px;color:var(--muted);margin-top:6px;line-height:1.72;}

/* 界面演示 */
.demo-wrap{
  display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);
  gap:26px;align-items:start;
}
.mock-window{
  background:#0b1b33;border-radius:18px;overflow:hidden;
  border:1px solid #16304f;box-shadow:0 20px 44px rgba(9,23,45,.28);
}
.mock-bar{
  display:flex;align-items:center;gap:8px;
  padding:12px 16px;background:#0f2745;border-bottom:1px solid #1b395c;
}
.mock-dot{width:10px;height:10px;border-radius:50%;background:#3f5a7d;}
.mock-dot:nth-child(2){background:#3f5a7d;}
.mock-dot:nth-child(3){background:#3f5a7d;}
.mock-title{margin-left:10px;font-size:12.5px;color:#9fb6d6;letter-spacing:.04em;}
.mock-body{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);gap:1px;background:#16304f;}
.mock-panel{background:#0d2444;padding:16px;min-width:0;}
.mock-panel h4{font-size:12.5px;color:#9fb6d6;font-weight:600;letter-spacing:.06em;margin-bottom:10px;}
.mock-row{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:9px 10px;border-radius:8px;background:rgba(255,255,255,.045);
  margin-bottom:7px;font-size:12.8px;color:#c6d6ee;
}
.mock-row span:last-child{color:#7fd7c8;font-weight:600;}
.mock-row.mute span:last-child{color:#8fa8c8;font-weight:500;}
.mock-side .mock-row{background:rgba(13,148,136,.14);}
.demo-list{display:flex;flex-direction:column;gap:14px;}
.demo-item{
  background:var(--surface);border:1px solid var(--line);
  border-left:3px solid var(--primary);
  border-radius:12px;padding:16px 18px;box-shadow:var(--shadow-sm);
}
.demo-item h3{font-size:15px;color:var(--ink);font-weight:700;}
.demo-item p{font-size:13.8px;color:var(--muted);margin-top:5px;line-height:1.7;}

/* 流程步骤 */
.step-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;}
.step-card{
  position:relative;min-width:0;
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius);padding:22px 20px;
  box-shadow:var(--shadow-sm);
  transition:transform .2s ease,box-shadow .2s ease;
}
.step-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);}
.step-index{
  font-size:12.5px;font-weight:700;color:var(--accent);
  letter-spacing:.1em;margin-bottom:8px;
}
.step-card h3{font-size:15.5px;color:var(--ink);font-weight:700;}
.step-card p{font-size:13.6px;color:var(--muted);margin-top:7px;line-height:1.7;}

/* 痛点 */
.pain-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;}
.pain-item{
  display:flex;gap:14px;min-width:0;
  background:#fff;border:1px solid var(--line);
  border-radius:14px;padding:18px 20px;
}
.pain-idx{
  flex:0 0 auto;width:30px;height:30px;border-radius:9px;
  background:#eef3fb;color:#35507a;font-weight:700;font-size:13.5px;
  display:flex;align-items:center;justify-content:center;
}
.pain-item h3{font-size:15px;color:var(--ink);font-weight:700;}
.pain-item p{font-size:13.8px;color:var(--muted);margin-top:4px;line-height:1.7;}

/* 保障 */
.guard-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;}
.guard-card{
  min-width:0;background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.16);
  border-radius:14px;padding:20px;
}
.guard-card i{font-size:19px;color:#7fd7c8;margin-bottom:10px;display:block;}
.guard-card h3{font-size:15px;color:#fff;font-weight:700;}
.guard-card p{font-size:13.4px;color:#a9c0dd;margin-top:6px;line-height:1.7;}
.guard-band{
  background:linear-gradient(160deg,#0a1830,#12314f 70%,#0d3742);
  color:#fff;border-radius:22px;padding:34px 30px;
}

/* 分类入口 */
.cat-wall{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.8fr);
  gap:22px;align-items:center;
}
.cat-card{
  background:linear-gradient(150deg,#ffffff,#f0f6ff);
  border:1px solid #d7e4f7;border-radius:18px;
  padding:26px;box-shadow:var(--shadow-sm);
}
.cat-card h3{font-size:18px;color:var(--ink);font-weight:700;}
.cat-card p{font-size:14px;color:var(--muted);margin-top:8px;line-height:1.75;}
.cat-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}
.tag-pill{
  display:inline-block;font-size:12.8px;color:#2c4a75;
  background:#e8f0fc;border:1px solid #d3e2f7;
  border-radius:999px;padding:4px 12px;
}

/* 资讯 */
.news-layout{display:grid;grid-template-columns:minmax(0,2fr) minmax(0,1fr);gap:24px;align-items:start;}
.feed-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;}
.feed-item{
  display:flex;flex-direction:column;min-width:0;
  background:var(--surface);border:1px solid var(--line);
  border-radius:14px;padding:20px;
  box-shadow:var(--shadow-sm);color:inherit;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.feed-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:#c9d8ef;color:inherit;}
.feed-tag{
  align-self:flex-start;font-size:12px;color:#0b7f75;
  background:var(--accent-soft);border-radius:999px;padding:3px 10px;margin-bottom:10px;
}
.feed-item h3{font-size:15.5px;color:var(--ink);font-weight:700;line-height:1.6;}
.feed-item p{font-size:13.6px;color:var(--muted);margin-top:8px;line-height:1.7;flex:1 1 auto;}
.feed-date{font-size:12.5px;color:#8d9cb2;margin-top:12px;}
.side-box{
  background:var(--surface);border:1px solid var(--line);
  border-radius:16px;padding:20px;box-shadow:var(--shadow-sm);
}
.side-box + .side-box{margin-top:18px;}
.side-box h3{font-size:15.5px;color:var(--ink);font-weight:700;margin-bottom:12px;}
.rank-list{display:flex;flex-direction:column;gap:10px;}
.rank-item{
  display:flex;gap:10px;align-items:flex-start;min-width:0;
  color:inherit;font-size:14px;line-height:1.6;
  padding:8px 0;border-bottom:1px dashed var(--line);
}
.rank-item:last-child{border-bottom:0;}
.rank-item:hover{color:var(--primary);}
.rank-num{
  flex:0 0 auto;width:20px;height:20px;border-radius:6px;
  background:#eef3fb;color:#35507a;font-size:12px;font-weight:700;
  display:flex;align-items:center;justify-content:center;margin-top:2px;
}
.rank-item:nth-child(1) .rank-num{background:var(--primary);color:#fff;}
.rank-item:nth-child(2) .rank-num{background:#3b82f6;color:#fff;}
.rank-item:nth-child(3) .rank-num{background:#60a5fa;color:#fff;}
.empty-tip{
  display:block;padding:22px;border:1px dashed #cfdcef;border-radius:14px;
  background:#f8fbff;color:#7a8aa2;font-size:14px;text-align:center;
}

/* 专题标签 */
.topic-cloud{display:flex;flex-wrap:wrap;gap:10px;}
.topic-cloud span{
  display:inline-block;font-size:13.5px;color:#22385a;
  background:#fff;border:1px solid var(--line);
  border-radius:999px;padding:7px 16px;box-shadow:var(--shadow-sm);
}

/* 最新动态表 */
.flow-table{
  background:var(--surface);border:1px solid var(--line);
  border-radius:16px;overflow:hidden;box-shadow:var(--shadow-sm);
}
.flow-head,.flow-row{
  display:grid;grid-template-columns:120px minmax(0,1fr) 130px;
  gap:14px;align-items:center;padding:14px 20px;
}
.flow-head{
  background:#eef3fb;font-size:12.8px;font-weight:700;
  color:#42556f;letter-spacing:.05em;
}
.flow-row{border-top:1px solid var(--line);font-size:14px;color:var(--muted);}
.flow-row a{color:var(--ink);font-weight:600;}
.flow-row a:hover{color:var(--primary);}
.flow-badge{
  display:inline-block;font-size:12px;color:#0b7f75;
  background:var(--accent-soft);border-radius:999px;padding:3px 10px;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;
}
.flow-time{font-size:12.8px;color:#8d9cb2;text-align:right;}

/* 媒体形态 */
.media-rail{
  display:flex;gap:16px;overflow-x:auto;padding-bottom:8px;
  scrollbar-width:thin;
}
.media-card{
  flex:0 0 268px;min-width:0;
  background:var(--surface);border:1px solid var(--line);
  border-radius:14px;padding:20px;box-shadow:var(--shadow-sm);
}
.media-top{
  display:flex;align-items:center;gap:10px;margin-bottom:10px;
}
.media-ico{
  width:34px;height:34px;border-radius:10px;
  background:#eef3fb;color:#1f5fd6;display:flex;
  align-items:center;justify-content:center;font-size:15px;flex:0 0 auto;
}
.media-card h3{font-size:15px;color:var(--ink);font-weight:700;}
.media-card p{font-size:13.6px;color:var(--muted);line-height:1.7;}

/* 推荐 */
.rec-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;}
.rec-card{
  display:flex;gap:14px;min-width:0;
  background:var(--surface);border:1px solid var(--line);
  border-radius:14px;padding:18px;color:inherit;
  box-shadow:var(--shadow-sm);
  transition:transform .2s ease,box-shadow .2s ease;
}
.rec-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);color:inherit;}
.rec-ico{
  flex:0 0 auto;width:36px;height:36px;border-radius:10px;
  background:var(--accent-soft);color:#0b7f75;font-size:15px;
  display:flex;align-items:center;justify-content:center;
}
.rec-card h3{font-size:14.5px;color:var(--ink);font-weight:700;line-height:1.55;}
.rec-card p{font-size:13.2px;color:var(--muted);margin-top:4px;line-height:1.65;}

/* FAQ */
.faq-list{display:grid;gap:12px;max-width:920px;}
.faq-list details{
  background:var(--surface);border:1px solid var(--line);
  border-radius:14px;padding:16px 20px;box-shadow:var(--shadow-sm);
}
.faq-list summary{
  cursor:pointer;font-size:15.5px;font-weight:700;color:var(--ink);
  list-style:none;display:flex;align-items:center;justify-content:space-between;gap:12px;
}
.faq-list summary::-webkit-details-marker{display:none;}
.faq-list summary::after{
  content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;
  font-size:12px;color:#8fa1ba;transition:transform .2s ease;
}
.faq-list details[open] summary::after{transform:rotate(180deg);}
.faq-list p{font-size:14.2px;color:var(--muted);margin-top:10px;line-height:1.8;}

/* 收口 */
.final-cta{
  background:linear-gradient(140deg,#0a1830,#123b5f);
  border-radius:22px;padding:40px 32px;color:#fff;
  display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,.6fr);
  gap:24px;align-items:center;
}
.final-cta h2{font-size:clamp(20px,2.4vw,27px);font-weight:800;line-height:1.45;}
.final-cta p{font-size:14.6px;color:#b8cbe6;margin-top:12px;line-height:1.85;}
.final-actions{display:flex;flex-direction:column;gap:10px;}

/* 页脚 */
.site-footer{
  background:#08152a;color:#a9bcd6;
  padding:52px 0 26px;margin-top:20px;
}
.footer-grid{
  display:grid;grid-template-columns:minmax(0,1.5fr) repeat(3,minmax(0,1fr));
  gap:28px;
}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:14px;}
.footer-brand .brand-mark{width:40px;height:40px;border-radius:12px;font-size:17px;}
.footer-brand-name{font-size:17px;font-weight:700;color:#fff;}
.footer-brand-sub{font-size:12px;color:#8ba2c1;letter-spacing:.06em;}
.footer-about{font-size:13.6px;color:#8ba2c1;line-height:1.8;max-width:340px;}
.footer-col h3{font-size:14px;color:#fff;font-weight:700;margin-bottom:12px;letter-spacing:.04em;}
.footer-col ul{display:flex;flex-direction:column;gap:8px;}
.footer-col a{font-size:13.6px;color:#9fb4d0;}
.footer-col a:hover{color:#fff;}
.footer-links{
  margin-top:34px;padding-top:22px;border-top:1px solid #16304f;
}
.footer-links h3{font-size:14px;color:#fff;font-weight:700;margin-bottom:12px;}
.friend-links{display:flex;flex-wrap:wrap;gap:10px 18px;}
.friend-links a{font-size:13.4px;color:#9fb4d0;}
.friend-links a:hover{color:#7fd7c8;}
.footer-risk{
  margin-top:22px;font-size:12.8px;color:#7c92b0;line-height:1.85;
}
.footer-bottom{
  margin-top:20px;padding-top:16px;border-top:1px solid #16304f;
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  font-size:12.8px;color:#7c92b0;
}

/* 响应式 */
@media (max-width:1024px){
  .site-section{padding:52px 0;}
  .roadmap-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .feature-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .step-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .guard-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .demo-wrap{grid-template-columns:1fr;}
  .news-layout{grid-template-columns:1fr;}
  .rec-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .cat-wall{grid-template-columns:1fr;}
  .final-cta{grid-template-columns:1fr;}
  .final-actions{flex-direction:row;flex-wrap:wrap;}
}
@media (max-width:768px){
  .topbar-main{padding:12px 0 10px;gap:12px;}
  .topbar-search{order:3;flex:1 1 100%;}
  .hero{padding:44px 0 40px;}
  .hero-kpis{grid-template-columns:1fr;}
  .download-grid{grid-template-columns:1fr;}
  .feature-grid{grid-template-columns:1fr;}
  .scene-grid{grid-template-columns:1fr;}
  .pain-list{grid-template-columns:1fr;}
  .feed-list{grid-template-columns:1fr;}
  .rec-grid{grid-template-columns:1fr;}
  .mock-body{grid-template-columns:1fr;}
  .flow-head,.flow-row{grid-template-columns:100px minmax(0,1fr);}
  .flow-time{grid-column:1 / -1;text-align:left;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:520px){
  .site-container{padding:0 16px;}
  .roadmap-grid{grid-template-columns:1fr;}
  .step-grid{grid-template-columns:1fr;}
  .guard-grid{grid-template-columns:1fr;}
  .brand-name{font-size:17px;}
  .brand-sub{font-size:11px;}
  .hero-actions .site-btn{width:100%;}
  .subbar input{flex:1 1 100%;}
  .subbar .site-btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .guard-band{padding:26px 20px;}
  .final-cta{padding:28px 20px;}
  .final-actions .site-btn{width:100%;}
}

/* roulang page: article */
:root{
  --ink:#0a1830;
  --ink-2:#102a4d;
  --primary:#1f5fd6;
  --primary-dark:#164aa8;
  --accent:#0d9488;
  --accent-soft:#e6f5f3;
  --bg:#f4f7fc;
  --surface:#ffffff;
  --text:#1a2433;
  --muted:#5b6b83;
  --line:#e3e9f3;
  --radius:16px;
  --radius-sm:10px;
  --shadow-sm:0 2px 10px rgba(13,32,64,.06);
  --shadow-md:0 14px 34px rgba(13,32,64,.10);
  --container:1180px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body.site-body{
  margin:0;
  padding:0;
  background:var(--bg);
  color:var(--text);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--primary);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--primary-dark);}
img{max-width:100%;height:auto;display:block;}
button{font-family:inherit;}
.site-container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 22px;
}
.site-section{padding:58px 0;}
.site-section.alt{background:#eef3fb;}
.section-head{max-width:820px;margin-bottom:28px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.06em;
  color:var(--accent);background:var(--accent-soft);
  padding:5px 12px;border-radius:999px;margin-bottom:14px;
}
.section-title{
  font-size:clamp(21px,2.6vw,29px);
  line-height:1.45;
  font-weight:700;
  color:var(--ink);
  letter-spacing:.01em;
  margin:0;
}
.section-desc{margin-top:12px;color:var(--muted);font-size:15.5px;}

/* 顶部导航 */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#fff;
  border-bottom:1px solid var(--line);
  box-shadow:0 4px 18px rgba(13,32,64,.05);
}
.topbar-main{
  display:flex;align-items:center;gap:20px;
  padding:14px 0 12px;
  flex-wrap:wrap;
}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.brand-mark{
  width:44px;height:44px;border-radius:13px;
  background:linear-gradient(145deg,var(--primary),var(--accent));
  color:#fff;display:flex;align-items:center;justify-content:center;
  font-size:19px;font-weight:700;letter-spacing:.02em;
  box-shadow:0 8px 18px rgba(31,95,214,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.28;}
.brand-name{font-size:19px;font-weight:700;color:var(--ink);}
.brand-sub{font-size:12px;color:var(--muted);letter-spacing:.08em;}
.topbar-search{
  flex:1 1 260px;min-width:0;display:flex;align-items:center;
  background:#f2f5fb;border:1px solid var(--line);
  border-radius:999px;padding:4px 6px 4px 16px;
}
.topbar-search i{color:#9aa8bd;font-size:13px;margin-right:8px;}
.topbar-search input{
  flex:1 1 auto;min-width:0;border:0;background:transparent;
  font-size:14px;color:var(--text);padding:8px 0;outline:none;margin:0;
  height:auto;box-shadow:none;
}
.topbar-search input::placeholder{color:#9aa8bd;}
.topbar-search button{
  border:0;border-radius:999px;background:var(--ink);
  color:#fff;font-size:13px;padding:7px 16px;cursor:pointer;
  transition:background .18s ease;margin:0;line-height:1.4;
}
.topbar-search button:hover{background:var(--primary);}
.topbar-cta{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.channel-bar{border-top:1px solid var(--line);background:#fff;}
.channel-tabs{
  max-width:var(--container);margin:0 auto;padding:0 22px;
  display:flex;gap:2px;overflow-x:auto;white-space:nowrap;
  -webkit-overflow-scrolling:touch;scrollbar-width:thin;
}
.channel-tabs::-webkit-scrollbar{height:3px;}
.channel-tabs::-webkit-scrollbar-thumb{background:#cfdcee;border-radius:999px;}
.channel-tabs a{
  display:block;flex:0 0 auto;padding:13px 14px;
  font-size:14.5px;color:var(--muted);font-weight:500;
  border-bottom:2px solid transparent;
  transition:color .18s ease,border-color .18s ease,background .18s ease;
}
.channel-tabs a:hover{color:var(--primary);background:#f7faff;}
.channel-tabs a.is-active{color:var(--primary);border-bottom-color:var(--primary);font-weight:700;}

/* 按钮 */
.site-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 22px;border-radius:999px;
  font-size:14.5px;font-weight:600;line-height:1.2;
  border:1px solid transparent;cursor:pointer;margin:0;
  transition:transform .18s ease,background .18s ease,color .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.site-btn:focus-visible{outline:3px solid rgba(31,95,214,.35);outline-offset:2px;}
.site-btn-primary{background:var(--primary);color:#fff;box-shadow:0 10px 22px rgba(31,95,214,.24);}
.site-btn-primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-2px);}
.site-btn-accent{background:var(--accent);color:#fff;box-shadow:0 10px 22px rgba(13,148,136,.22);}
.site-btn-accent:hover{background:#0b7f75;color:#fff;transform:translateY(-2px);}
.site-btn-outline{background:#fff;color:var(--ink);border-color:var(--line);}
.site-btn-outline:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px);}
.site-btn-sm{padding:8px 16px;font-size:13px;}

/* 文章头部（斜切色块） */
.article-hero{
  position:relative;overflow:hidden;color:#fff;
  background:
    radial-gradient(760px 360px at 10% -20%, rgba(31,95,214,.55), transparent 62%),
    radial-gradient(620px 320px at 94% 4%, rgba(13,148,136,.42), transparent 60%),
    linear-gradient(180deg,#08152a 0%,#0d2444 100%);
  padding:42px 0 78px;
  clip-path:polygon(0 0,100% 0,100% calc(100% - 46px),0 100%);
}
.article-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:60px 60px;
}
.article-hero-inner{position:relative;z-index:2;max-width:900px;}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:#9fb6d6;margin-bottom:18px;flex-wrap:wrap;}
.crumb a{color:#cfdff5;}
.crumb a:hover{color:#fff;}
.crumb span.sep{color:#5d7899;}
.article-tag{
  display:inline-flex;align-items:center;gap:7px;
  font-size:12.5px;font-weight:600;letter-spacing:.05em;
  padding:5px 13px;border-radius:999px;
  background:rgba(255,255,255,.11);border:1px solid rgba(255,255,255,.22);
  color:#d6e6ff;margin-bottom:16px;
}
.article-hero h1{
  font-size:clamp(22px,3vw,34px);
  line-height:1.45;font-weight:800;letter-spacing:.01em;
  color:#fff;margin:0;
}
.article-meta{
  display:flex;flex-wrap:wrap;gap:10px 20px;margin-top:20px;
  font-size:13.5px;color:#a9c0dd;
}
.article-meta span{display:inline-flex;align-items:center;gap:7px;min-width:0;}
.article-meta i{font-size:12.5px;color:#7fa2cd;}

/* 正文布局 */
.article-main{background:var(--bg);}
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 320px;
  gap:30px;
  align-items:start;
}
.article-paper{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow-sm);
  padding:34px 36px 30px;
  min-width:0;
}
.article-content{
  max-width:760px;
  font-size:16.5px;
  line-height:1.95;
  color:#243244;
  overflow-wrap:break-word;
}
.article-content h2{
  font-size:clamp(19px,2.2vw,23px);
  line-height:1.55;color:var(--ink);
  margin:34px 0 14px;padding-left:14px;
  border-left:4px solid var(--primary);
  font-weight:700;
}
.article-content h3{
  font-size:17.5px;line-height:1.6;color:var(--ink-2);
  margin:26px 0 10px;font-weight:700;
}
.article-content h4{font-size:16px;color:var(--ink-2);margin:22px 0 8px;font-weight:700;}
.article-content p{margin:0 0 16px;}
.article-content ul,.article-content ol{padding-left:22px;margin:0 0 18px;}
.article-content li{margin-bottom:8px;}
.article-content a{color:var(--primary);text-decoration:underline;}
.article-content a:hover{color:var(--primary-dark);}
.article-content blockquote{
  margin:22px 0;padding:16px 20px;
  background:var(--accent-soft);
  border-left:4px solid var(--accent);
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  color:#12453f;font-size:15.5px;
}
.article-content blockquote p:last-child{margin-bottom:0;}
.article-content img{border-radius:var(--radius-sm);margin:18px 0;height:auto;}
.article-content table{width:100%;border-collapse:collapse;margin:20px 0;font-size:15px;}
.article-content th,.article-content td{border:1px solid var(--line);padding:10px 12px;text-align:left;vertical-align:top;}
.article-content th{background:#f1f5fc;color:var(--ink-2);font-weight:600;}
.article-content hr{border:0;border-top:1px solid var(--line);margin:28px 0;}
.article-empty{padding:18px 0 6px;}
.article-empty h2{font-size:21px;color:var(--ink);margin:0 0 12px;}
.article-empty p{color:var(--muted);margin:0 0 20px;}
.risk-note{
  margin-top:28px;padding:16px 18px;
  border-radius:12px;background:#fff8ec;border:1px solid #f3dcb6;
  color:#7a5416;font-size:14px;line-height:1.85;
}
.risk-note strong{color:#6b4708;}

/* 侧栏 */
.article-side{
  position:sticky;top:96px;
  display:flex;flex-direction:column;gap:18px;
  min-width:0;
}
.side-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:22px 22px 20px;
  box-shadow:var(--shadow-sm);
  min-width:0;
}
.side-card h2{
  font-size:16px;color:var(--ink);font-weight:700;
  margin:0 0 14px;display:flex;align-items:center;gap:9px;line-height:1.5;
}
.side-card h2 i{color:var(--primary);font-size:14px;}
.side-card p{font-size:14px;color:var(--muted);line-height:1.85;margin:0 0 14px;}
.side-card p:last-child{margin-bottom:0;}
.side-dl a{
  display:flex;align-items:center;gap:10px;
  padding:11px 14px;margin-bottom:10px;
  border:1px solid var(--line);border-radius:10px;
  background:#f8fafd;color:var(--ink);font-size:14px;font-weight:600;
  transition:border-color .18s ease,background .18s ease,color .18s ease,transform .18s ease;
}
.side-dl a:last-child{margin-bottom:0;}
.side-dl a i{color:var(--primary);font-size:15px;flex:0 0 auto;}
.side-dl a:hover{border-color:var(--primary);background:#fff;color:var(--primary);transform:translateX(2px);}
.side-list{list-style:none;margin:0;padding:0;}
.side-list li{
  font-size:14px;color:var(--muted);line-height:1.8;
  padding-left:18px;position:relative;margin-bottom:10px;
}
.side-list li:last-child{margin-bottom:0;}
.side-list li::before{
  content:"";position:absolute;left:0;top:9px;
  width:6px;height:6px;border-radius:50%;background:var(--accent);
}
.side-card.dark{
  background:linear-gradient(150deg,#0a1830,#123a6b);
  border-color:transparent;color:#c6d6ee;
}
.side-card.dark h2{color:#fff;}
.side-card.dark p{color:#b5c9e4;}
.side-card.dark .site-btn{width:100%;margin-top:4px;}

/* 下载区 */
.download-band{
  position:relative;overflow:hidden;
  border-radius:22px;
  padding:38px 38px 34px;
  color:#fff;
  background:
    radial-gradient(680px 300px at 88% -10%, rgba(13,148,136,.42), transparent 62%),
    linear-gradient(140deg,#0a1830 0%,#123a6b 100%);
  box-shadow:var(--shadow-md);
}
.download-band h2{color:#fff;font-size:clamp(20px,2.4vw,26px);margin:0 0 10px;line-height:1.5;font-weight:700;}
.download-band p.lead{color:#bcd0ea;font-size:15px;margin:0 0 24px;max-width:760px;line-height:1.85;}
.download-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;}
.dl-card{
  display:flex;align-items:center;gap:14px;min-width:0;
  padding:16px 18px;border-radius:14px;
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.22);
  color:#fff;
  transition:background .18s ease,transform .18s ease,border-color .18s ease;
}
.dl-card:hover{background:rgba(255,255,255,.17);color:#fff;transform:translateY(-3px);border-color:rgba(255,255,255,.4);}
.dl-card:focus-visible{outline:3px solid rgba(255,255,255,.55);outline-offset:2px;}
.dl-ico{
  width:42px;height:42px;flex:0 0 auto;border-radius:12px;
  background:rgba(255,255,255,.15);
  display:flex;align-items:center;justify-content:center;font-size:18px;
}
.dl-txt{min-width:0;}
.dl-txt strong{display:block;font-size:15px;font-weight:700;line-height:1.4;}
.dl-txt em{display:block;font-style:normal;font-size:12.5px;color:#bcd0ea;line-height:1.6;margin-top:2px;}
.download-foot{
  margin-top:22px;font-size:13px;color:#9fb8d8;line-height:1.8;
  border-top:1px solid rgba(255,255,255,.14);padding-top:16px;
}

/* 频道矩阵 */
.channel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;}
.channel-card{
  display:block;min-width:0;
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius);padding:22px;
  box-shadow:var(--shadow-sm);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.channel-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:#cdddf7;}
.channel-card .cc-ico{
  width:40px;height:40px;border-radius:12px;
  background:var(--accent-soft);color:var(--accent);
  display:flex;align-items:center;justify-content:center;font-size:16px;margin-bottom:14px;
}
.channel-card h3{font-size:16.5px;color:var(--ink);margin:0 0 8px;font-weight:700;line-height:1.5;}
.channel-card p{font-size:14px;color:var(--muted);margin:0;line-height:1.8;}

/* FAQ */
.faq-list{display:grid;gap:12px;max-width:900px;}
.faq-item{
  background:var(--surface);border:1px solid var(--line);
  border-radius:12px;overflow:hidden;
  transition:box-shadow .2s ease,border-color .2s ease;
}
.faq-item[open]{border-color:#c9d9f4;box-shadow:var(--shadow-sm);}
.faq-item summary{
  list-style:none;cursor:pointer;
  padding:16px 20px;font-weight:600;color:var(--ink);font-size:15.5px;
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;
  color:var(--primary);font-size:12px;flex:0 0 auto;transition:transform .2s ease;
}
.faq-item[open] summary::after{transform:rotate(180deg);}
.faq-body{padding:0 20px 18px;color:var(--muted);font-size:14.5px;line-height:1.9;}
.faq-body p{margin:0 0 10px;}
.faq-body p:last-child{margin-bottom:0;}

/* 收口 CTA */
.cta-panel{
  border-radius:20px;padding:36px;
  background:#fff;border:1px solid var(--line);
  box-shadow:var(--shadow-sm);
  display:grid;grid-template-columns:minmax(0,1fr) auto;
  gap:24px;align-items:center;
}
.cta-panel h2{font-size:clamp(19px,2.3vw,25px);color:var(--ink);margin:0 0 10px;line-height:1.5;font-weight:700;}
.cta-panel p{margin:0;color:var(--muted);font-size:15px;line-height:1.85;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* 页脚 */
.site-footer{background:#08152a;color:#a9bcd6;padding:56px 0 26px;}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:28px;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:14px;}
.footer-brand-name{color:#fff;font-size:17px;font-weight:700;}
.footer-brand-sub{color:#7f94b3;font-size:12px;letter-spacing:.08em;}
.footer-about{color:#93a7c4;font-size:14px;line-height:1.9;margin:0;max-width:380px;}
.footer-col h3{color:#fff;font-size:15px;margin:0 0 14px;font-weight:600;line-height:1.5;}
.footer-col ul{list-style:none;margin:0;padding:0;}
.footer-col li{margin-bottom:9px;}
.footer-col a{color:#93a7c4;font-size:14px;}
.footer-col a:hover{color:#fff;}
.footer-links{border-top:1px solid rgba(255,255,255,.1);margin-top:34px;padding-top:22px;}
.footer-links h3{color:#fff;font-size:14px;margin:0 0 12px;font-weight:600;}
.friend-links{display:flex;flex-wrap:wrap;gap:10px 18px;}
.friend-links a{color:#8ea4c2;font-size:13.5px;}
.friend-links a:hover{color:#fff;}
.footer-risk{
  margin-top:26px;padding:14px 16px;border-radius:10px;
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);
  font-size:13px;line-height:1.85;color:#93a7c4;
}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  margin-top:22px;padding-top:18px;
  border-top:1px solid rgba(255,255,255,.1);
  font-size:13px;color:#7f94b3;
}

/* 响应式 */
@media (max-width:1024px){
  .article-layout{grid-template-columns:minmax(0,1fr);}
  .article-side{position:static;}
  .article-content{max-width:none;}
  .download-grid{grid-template-columns:minmax(0,1fr);}
  .channel-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .cta-panel{grid-template-columns:minmax(0,1fr);}
}
@media (max-width:768px){
  .site-section{padding:44px 0;}
  .topbar-main{gap:12px;padding:12px 0 10px;}
  .topbar-search{order:3;flex:1 1 100%;}
  .article-paper{padding:24px 20px 22px;}
  .article-hero{padding:34px 0 66px;}
  .channel-grid{grid-template-columns:minmax(0,1fr);}
  .download-band{padding:26px 20px 24px;border-radius:18px;}
  .cta-panel{padding:26px 20px;}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:24px;}
}
@media (max-width:520px){
  .site-container{padding:0 16px;}
  .channel-tabs{padding:0 16px;}
  .brand-name{font-size:17px;}
  .brand-sub{font-size:11px;}
  .brand-mark{width:40px;height:40px;font-size:17px;border-radius:12px;}
  .topbar-cta .site-btn-sm{padding:7px 13px;font-size:12.5px;}
  .article-hero h1{font-size:21px;}
  .article-content{font-size:16px;}
  .article-meta{font-size:12.5px;gap:8px 14px;}
  .cta-actions .site-btn{width:100%;}
}

/* roulang page: category1 */
:root{
  --ink:#0a1830;
  --ink-2:#102a4d;
  --primary:#1f5fd6;
  --primary-dark:#164aa8;
  --accent:#0d9488;
  --accent-soft:#e6f5f3;
  --bg:#f4f7fc;
  --surface:#ffffff;
  --text:#1a2433;
  --muted:#5b6b83;
  --line:#e3e9f3;
  --radius:16px;
  --radius-sm:10px;
  --shadow-sm:0 2px 10px rgba(13,32,64,.06);
  --shadow-md:0 14px 34px rgba(13,32,64,.10);
  --container:1180px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body.site-body{
  margin:0;padding:0;
  background:var(--bg);
  color:var(--text);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Arial,sans-serif;
  font-size:16px;line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5,h6{margin:0;line-height:1.4;font-weight:700;color:var(--ink);font-family:inherit;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
a{color:var(--primary);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--primary-dark);}
img{max-width:100%;height:auto;display:block;}
button{font-family:inherit;}
.site-container{width:100%;max-width:var(--container);margin:0 auto;padding:0 22px;}

/* 顶部导航 */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#fff;border-bottom:1px solid var(--line);
  box-shadow:0 4px 18px rgba(13,32,64,.05);
}
.topbar-main{display:flex;align-items:center;gap:20px;padding:14px 0 12px;flex-wrap:wrap;}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto;color:inherit;}
.brand:hover{color:inherit;}
.brand-mark{
  width:44px;height:44px;border-radius:13px;
  background:linear-gradient(145deg,var(--primary),var(--accent));
  color:#fff;display:flex;align-items:center;justify-content:center;
  font-size:19px;font-weight:700;letter-spacing:.02em;
  box-shadow:0 8px 18px rgba(31,95,214,.28);
  flex:0 0 auto;
}
.brand-text{display:flex;flex-direction:column;line-height:1.28;}
.brand-name{font-size:19px;font-weight:700;color:var(--ink);}
.brand-sub{font-size:12px;color:var(--muted);letter-spacing:.08em;}
.topbar-search{
  flex:1 1 260px;min-width:0;display:flex;align-items:center;
  background:#f2f5fb;border:1px solid var(--line);
  border-radius:999px;padding:4px 6px 4px 16px;
}
.topbar-search i{color:#9aa8bd;font-size:13px;margin-right:8px;}
.topbar-search input{
  flex:1 1 auto;min-width:0;border:0;background:transparent;box-shadow:none;
  height:auto;margin:0;
  font-size:14px;color:var(--text);padding:8px 0;outline:none;
}
.topbar-search input::placeholder{color:#9aa8bd;}
.topbar-search input:focus{box-shadow:none;background:transparent;}
.topbar-search button{
  border:0;border-radius:999px;background:var(--ink);margin:0;
  color:#fff;font-size:13px;padding:7px 16px;cursor:pointer;
  transition:background .18s ease;
}
.topbar-search button:hover{background:var(--primary);}
.topbar-cta{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.channel-bar{border-top:1px solid var(--line);background:#fff;}
.channel-tabs{
  max-width:var(--container);margin:0 auto;padding:0 22px;
  display:flex;gap:2px;overflow-x:auto;-webkit-overflow-scrolling:touch;scrollbar-width:none;
}
.channel-tabs::-webkit-scrollbar{display:none;}
.channel-tabs a{
  display:inline-block;padding:13px 14px;flex:0 0 auto;white-space:nowrap;
  font-size:14.5px;color:var(--muted);font-weight:500;
  border-bottom:2px solid transparent;
  transition:color .18s ease,border-color .18s ease,background .18s ease;
}
.channel-tabs a:hover{color:var(--primary);}
.channel-tabs a.is-active{color:var(--primary);border-bottom-color:var(--primary);font-weight:700;}

/* 按钮 */
.site-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 22px;border-radius:999px;margin:0;
  font-size:14.5px;font-weight:600;line-height:1.2;
  border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease,background .18s ease,color .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.site-btn:focus-visible{outline:3px solid rgba(31,95,214,.35);outline-offset:2px;}
.site-btn-primary{background:var(--primary);color:#fff;box-shadow:0 10px 22px rgba(31,95,214,.24);}
.site-btn-primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-2px);}
.site-btn-light{background:rgba(255,255,255,.14);color:#fff;border-color:rgba(255,255,255,.34);}
.site-btn-light:hover{background:rgba(255,255,255,.24);color:#fff;transform:translateY(-2px);}
.site-btn-outline{background:#fff;color:var(--ink);border-color:var(--line);}
.site-btn-outline:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px);}
.site-btn-sm{padding:8px 16px;font-size:13px;}

/* 分类 Hero */
.cat-hero{
  position:relative;overflow:hidden;color:#fff;
  background:
    radial-gradient(900px 420px at 12% -10%, rgba(31,95,214,.55), transparent 62%),
    radial-gradient(700px 380px at 92% 8%, rgba(13,148,136,.40), transparent 60%),
    linear-gradient(180deg,#08152a 0%,#0d2444 100%);
  padding:56px 0 52px;
}
.cat-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:60px 60px;
}
.cat-hero-inner{
  position:relative;z-index:2;
  display:grid;grid-template-columns:minmax(0,1.18fr) minmax(0,.82fr);
  gap:36px;align-items:center;
}
.cat-hero-copy{min-width:0;}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.05em;
  padding:6px 14px;border-radius:999px;
  background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.22);
  color:#d6e6ff;margin-bottom:18px;
}
.cat-hero h1{
  font-size:clamp(24px,3.2vw,38px);line-height:1.35;font-weight:800;
  color:#fff;letter-spacing:.01em;max-width:760px;
}
.hero-lead{margin-top:16px;font-size:15.5px;line-height:1.9;color:#c6d6ee;max-width:720px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
.trust-bar{display:flex;flex-wrap:wrap;gap:10px 20px;margin-top:22px;font-size:13px;color:#a9c1e0;}
.trust-bar span{display:inline-flex;align-items:center;gap:7px;}
.trust-bar i{color:#5eead4;font-size:12px;}
.hero-panel{
  min-width:0;padding:22px;border-radius:18px;
  background:rgba(255,255,255,.07);
  border:1px solid rgba(255,255,255,.18);
  box-shadow:0 18px 40px rgba(4,12,26,.34);
}
.hero-panel-title{font-size:16px;color:#fff;margin-bottom:14px;display:flex;align-items:center;gap:9px;}
.hero-panel-title i{color:#5eead4;font-size:14px;}
.hero-panel ul{display:grid;gap:12px;}
.hero-panel li{display:flex;gap:10px;min-width:0;font-size:14px;line-height:1.65;color:#cfdff4;}
.hero-panel li i{color:#5eead4;font-size:12px;margin-top:6px;flex:0 0 auto;}
.hero-panel-foot{margin-top:16px;padding-top:14px;border-top:1px solid rgba(255,255,255,.16);font-size:12.5px;line-height:1.7;color:#9fb8d8;}

/* 通用板块 */
.site-section{padding:60px 0;}
.site-section.alt{background:#eef3fb;}
.site-section.dark{background:linear-gradient(180deg,#0b1c33 0%,#102a4d 100%);}
.section-head{max-width:840px;margin-bottom:30px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.06em;
  color:var(--accent);background:var(--accent-soft);
  padding:5px 12px;border-radius:999px;margin-bottom:14px;
}
.section-title{font-size:clamp(21px,2.6vw,29px);line-height:1.45;font-weight:700;color:var(--ink);letter-spacing:.01em;}
.section-desc{margin-top:12px;color:var(--muted);font-size:15.5px;}
.dark .section-title{color:#fff;}
.dark .section-desc{color:#a9c1e0;}
.dark .eyebrow{background:rgba(94,234,212,.12);color:#5eead4;}

/* 概念卡 */
.concept-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;}
.concept-card{
  min-width:0;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius);padding:22px;box-shadow:var(--shadow-sm);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.concept-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:#cfdcf0;}
.concept-icon{
  width:40px;height:40px;border-radius:12px;margin-bottom:14px;
  background:var(--accent-soft);color:var(--accent);
  display:flex;align-items:center;justify-content:center;font-size:16px;
}
.concept-card h3{font-size:16.5px;margin-bottom:8px;}
.concept-card p{font-size:14.5px;color:var(--muted);}

/* 流程 */
.step-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;}
.step-item{
  min-width:0;display:flex;gap:14px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:18px;box-shadow:var(--shadow-sm);
  transition:transform .2s ease,box-shadow .2s ease;
}
.step-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);}
.step-num{
  flex:0 0 34px;width:34px;height:34px;border-radius:50%;
  background:linear-gradient(145deg,var(--primary),var(--accent));
  color:#fff;display:flex;align-items:center;justify-content:center;
  font-weight:700;font-size:14px;
}
.step-body{min-width:0;}
.step-item h3{font-size:15.5px;margin-bottom:6px;}
.step-item p{font-size:14px;color:var(--muted);}

/* 指标卡 */
.metric-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;}
.metric-card{
  min-width:0;background:#fff;border:1px solid var(--line);border-top:3px solid var(--accent);
  border-radius:var(--radius);padding:22px;box-shadow:var(--shadow-sm);
}
.metric-label{font-size:12.5px;font-weight:700;letter-spacing:.08em;color:var(--accent);}
.metric-card h3{font-size:17px;margin:8px 0 8px;}
.metric-card p{font-size:14.5px;color:var(--muted);}

/* 场景卡 */
.scene-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;}
.scene-card{
  min-width:0;display:flex;gap:16px;background:#fff;
  border:1px solid var(--line);border-radius:var(--radius);padding:20px;
  box-shadow:var(--shadow-sm);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.scene-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:#cfdcf0;}
.scene-icon{
  flex:0 0 44px;width:44px;height:44px;border-radius:13px;
  background:linear-gradient(145deg,rgba(31,95,214,.12),rgba(13,148,136,.16));
  color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:17px;
}
.scene-body{min-width:0;}
.scene-card h3{font-size:16px;margin-bottom:8px;}
.scene-card p{font-size:14.5px;color:var(--muted);}

/* 规则清单 */
.rule-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;}
.rule-item{
  min-width:0;display:flex;gap:12px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);
  padding:16px 18px;font-size:14.5px;color:#2b3a4f;
}
.rule-item i{color:var(--primary);font-size:13px;margin-top:6px;flex:0 0 auto;}

/* 边界说明 */
.guard-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;}
.guard-item{
  min-width:0;display:flex;gap:12px;font-size:14.5px;line-height:1.7;color:#cfdff4;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);
  border-radius:var(--radius);padding:18px;
}
.guard-item i{color:#fbbf24;font-size:13px;margin-top:6px;flex:0 0 auto;}

/* FAQ */
.faq-list{display:grid;gap:12px;max-width:900px;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);
  transition:border-color .18s ease,box-shadow .18s ease;
}
.faq-item[open]{border-color:#c7d8f2;box-shadow:var(--shadow-sm);}
.faq-item summary{
  list-style:none;cursor:pointer;padding:16px 20px;
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:15.5px;font-weight:600;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;
  font-size:12px;color:var(--muted);transition:transform .2s ease;flex:0 0 auto;
}
.faq-item[open] summary::after{transform:rotate(180deg);}
.faq-answer{padding:0 20px 18px;font-size:14.5px;color:var(--muted);}

/* 资讯列表 */
.news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;}
.news-card{
  min-width:0;display:flex;flex-direction:column;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:20px;box-shadow:var(--shadow-sm);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.news-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:#cfdcf0;}
.news-meta{display:flex;flex-wrap:wrap;gap:10px;font-size:12.5px;color:var(--muted);margin-bottom:10px;}
.news-meta span{display:inline-flex;align-items:center;gap:5px;}
.news-card h3{font-size:16px;line-height:1.55;margin-bottom:8px;}
.news-card h3 a{color:var(--ink);}
.news-card h3 a:hover{color:var(--primary);}
.news-card p{font-size:14px;color:var(--muted);flex:1 1 auto;margin-bottom:12px;}
.news-more{display:inline-flex;align-items:center;gap:6px;font-size:13.5px;font-weight:600;}
.news-empty{
  background:#fff;border:1px dashed #c9d8ee;border-radius:var(--radius);
  padding:26px;color:var(--muted);font-size:14.5px;text-align:center;
}
.update-note{
  margin-top:22px;padding:18px 20px;border-radius:var(--radius);
  background:#fff;border:1px solid var(--line);
  font-size:14px;color:var(--muted);
}
.update-note strong{color:var(--ink);}

/* 下载 */
.download-panel{
  background:#fff;border:1px solid var(--line);border-radius:22px;
  padding:32px;box-shadow:var(--shadow-md);
}
.download-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-top:24px;}
.dl-card{
  display:flex;flex-direction:column;align-items:flex-start;gap:6px;
  padding:20px;border-radius:var(--radius);border:1px solid var(--line);
  background:#f8fbff;color:inherit;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease,background .2s ease;
}
.dl-card i{font-size:20px;color:var(--primary);}
.dl-name{font-weight:700;font-size:15.5px;color:var(--ink);}
.dl-file{font-size:12.5px;color:var(--muted);}
.dl-card:hover{transform:translateY(-3px);border-color:var(--primary);background:#fff;box-shadow:var(--shadow-md);color:inherit;}
.dl-card:hover .dl-name{color:var(--primary);}
.download-note{margin-top:20px;font-size:13.5px;color:var(--muted);line-height:1.8;}

/* 页脚 */
.site-footer{background:#08152a;color:#a9c1e0;padding:48px 0 26px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:28px;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:14px;}
.footer-brand-name{font-size:17px;font-weight:700;color:#fff;}
.footer-brand-sub{font-size:12px;color:#8ea9ca;letter-spacing:.08em;}
.footer-about{font-size:13.5px;line-height:1.85;color:#8ea9ca;}
.footer-col h3{font-size:14px;color:#fff;margin-bottom:14px;letter-spacing:.04em;}
.footer-col ul{display:grid;gap:9px;}
.footer-col a{font-size:13.5px;color:#a9c1e0;}
.footer-col a:hover{color:#5eead4;}
.footer-links{margin-top:34px;padding-top:24px;border-top:1px solid rgba(255,255,255,.10);}
.footer-links h3{font-size:14px;color:#fff;margin-bottom:14px;}
.friend-links{display:flex;flex-wrap:wrap;gap:10px 18px;}
.friend-links a{font-size:13.5px;color:#a9c1e0;padding:5px 12px;border-radius:999px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.10);}
.friend-links a:hover{color:#5eead4;border-color:rgba(94,234,212,.45);}
.footer-risk{
  margin-top:26px;font-size:12.5px;line-height:1.85;color:#7f9abd;
  padding:14px 16px;border-radius:var(--radius-sm);
  background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.08);
}
.footer-bottom{
  margin-top:20px;padding-top:18px;border-top:1px solid rgba(255,255,255,.10);
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
  font-size:12.5px;color:#7f9abd;
}

/* 响应式 */
@media (max-width:1024px){
  .cat-hero-inner{grid-template-columns:minmax(0,1fr);gap:28px;}
  .concept-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .metric-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .news-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
}
@media (max-width:768px){
  .topbar-main{gap:12px;padding:12px 0;}
  .topbar-search{order:3;flex:1 1 100%;}
  .topbar-cta{margin-left:auto;}
  .site-section{padding:44px 0;}
  .cat-hero{padding:40px 0;}
  .concept-grid,.metric-grid,.scene-grid,.rule-grid,.guard-list,.step-list,.news-grid,.download-grid{grid-template-columns:minmax(0,1fr);}
  .footer-grid{grid-template-columns:minmax(0,1fr);}
  .download-panel{padding:22px;}
  .brand-name{font-size:17px;}
  .brand-mark{width:40px;height:40px;font-size:17px;border-radius:12px;}
}
@media (max-width:520px){
  .site-container{padding:0 16px;}
  .channel-tabs{padding:0 16px;}
  body.site-body{font-size:15px;}
  .hero-actions .site-btn{width:100%;}
  .section-title{font-size:20px;}
  .footer-bottom{flex-direction:column;}
}