/* roulang page: index */
:root{
  --brand-900:#0b2a6f;
  --brand-700:#1a4fc4;
  --brand-600:#1d6ae5;
  --brand-500:#3b8cf7;
  --brand-100:#e8f0ff;
  --accent-500:#0ea5e9;
  --accent-200:#c7ecfb;
  --ink-900:#0d1626;
  --ink-700:#2b3a52;
  --ink-500:#5b6b85;
  --ink-300:#8d9ab1;
  --line:#e2e8f3;
  --bg:#f6f9fd;
  --surface:#ffffff;
  --radius-lg:20px;
  --radius-md:14px;
  --radius-sm:10px;
  --shadow-sm:0 2px 10px rgba(15,40,90,.05);
  --shadow-md:0 16px 36px rgba(15,40,90,.10);
  --shadow-lg:0 28px 64px rgba(13,40,100,.13);
  --maxw:1200px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-900);
  font-family:system-ui,-apple-system,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  line-height:1.75;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--accent-500);outline-offset:3px;border-radius:6px}

.container-x{max-width:var(--maxw);margin:0 auto;padding:0 20px}
.section{padding:68px 0}
.section.tight{padding:44px 0}
.section.alt{background:linear-gradient(180deg,#ffffff 0%,#f2f7ff 100%);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section.dark{background:#0c1c3c;color:#e8eefb}
.section.dark .h2,.section.dark .h3{color:#ffffff}
.section.dark .lead{color:#a9bcdd}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.header-top{display:flex;align-items:center;gap:20px;padding:14px 0}
.brand{display:flex;align-items:center;gap:11px;flex:0 0 auto}
.brand-mark{
  width:40px;height:40px;border-radius:13px;
  background:linear-gradient(150deg,var(--brand-600),var(--brand-900));
  color:#fff;display:grid;place-items:center;font-weight:700;font-size:17px;
  box-shadow:0 8px 18px rgba(26,79,196,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text b{font-size:18px;font-weight:700;letter-spacing:.2px}
.brand-text span{font-size:12px;color:var(--ink-300);font-weight:500}
.search-box{
  flex:1 1 auto;max-width:430px;display:flex;align-items:center;gap:8px;
  background:#fff;border:1px solid var(--line);border-radius:999px;
  padding:5px 5px 5px 16px;transition:border-color .2s,box-shadow .2s;
}
.search-box:focus-within{border-color:var(--brand-500);box-shadow:0 0 0 4px rgba(59,140,247,.14)}
.search-box svg{flex:0 0 auto;color:var(--ink-300)}
.search-box input{flex:1;border:0;outline:0;background:transparent;font-size:14px;min-width:60px}
.search-box button{
  border:0;background:var(--brand-600);color:#fff;border-radius:999px;
  padding:8px 18px;font-size:14px;font-weight:600;cursor:pointer;transition:background .2s;
}
.search-box button:hover{background:var(--brand-700)}
.header-cta{flex:0 0 auto}
.channel-bar{background:#fff;border-top:1px solid var(--line)}
.channel-tabs{display:flex;gap:8px;overflow-x:auto;padding:10px 0;scrollbar-width:none}
.channel-tabs::-webkit-scrollbar{display:none}
.channel-tab{
  flex:0 0 auto;padding:8px 18px;border-radius:999px;font-size:14.5px;font-weight:600;
  color:var(--ink-500);border:1px solid transparent;transition:all .2s;white-space:nowrap;
}
.channel-tab:hover{background:var(--brand-100);color:var(--brand-700)}
.channel-tab.is-active{background:var(--brand-600);color:#fff;box-shadow:0 8px 20px rgba(29,106,229,.26)}

/* ============ 按钮与通用组件 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:999px;font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;transition:all .22s ease;white-space:nowrap;
}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:0 10px 24px rgba(29,106,229,.26)}
.btn-primary:hover{background:var(--brand-700);transform:translateY(-2px);box-shadow:0 16px 32px rgba(29,106,229,.30)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:#fff;color:var(--brand-700);border-color:#cdddf7}
.btn-ghost:hover{background:var(--brand-100);border-color:var(--brand-500);transform:translateY(-2px)}
.btn-sm{padding:9px 18px;font-size:14px}

.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  color:var(--brand-700);background:var(--brand-100);border-radius:999px;padding:6px 14px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand-600)}
.h2{font-size:clamp(22px,2.5vw,31px);font-weight:700;letter-spacing:-.01em;line-height:1.32;margin-top:14px}
.h3{font-size:18px;font-weight:700;line-height:1.45}
.lead{color:var(--ink-500);font-size:15.5px;line-height:1.9;margin-top:12px;max-width:780px}
.section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;margin-bottom:34px;flex-wrap:wrap}
.link-more{font-size:14px;font-weight:600;color:var(--brand-600);border-bottom:1px solid transparent;transition:all .2s;white-space:nowrap}
.link-more:hover{color:var(--brand-700);border-bottom-color:var(--brand-700)}

.card{
  background:#fff;border:1px solid var(--line);border-radius:18px;padding:24px;
  box-shadow:var(--shadow-sm);transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#cdddf7}
.card p{color:var(--ink-500);font-size:14.5px;line-height:1.85;margin-top:10px}
.card-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px}

.badge{
  display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:600;
  padding:4px 11px;border-radius:999px;background:var(--brand-100);color:var(--brand-700);
}
.badge-soft{background:#eef3fa;color:var(--ink-500)}
.badge-accent{background:var(--accent-200);color:#075985}
.tag{
  display:inline-block;font-size:13px;color:var(--ink-500);background:#f1f5fb;
  border:1px solid var(--line);border-radius:999px;padding:5px 13px;transition:all .2s;
}
.tag:hover{background:var(--brand-100);color:var(--brand-700);border-color:#c9dcfa}

.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.grid-5{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:18px}

/* ============ 首屏 ============ */
.hero-section{padding:44px 0 26px}
.hero-glow{
  position:relative;overflow:hidden;border-radius:28px;background:#fff;
  border:1px solid var(--line);box-shadow:var(--shadow-lg);
}
.hero-glow::before{
  content:"";position:absolute;left:-12%;right:-12%;top:-45%;height:620px;pointer-events:none;
  background:
    radial-gradient(34% 52% at 18% 34%, rgba(93,168,255,.38), transparent 70%),
    radial-gradient(30% 46% at 76% 20%, rgba(125,211,252,.38), transparent 72%),
    radial-gradient(38% 52% at 62% 82%, rgba(186,214,255,.42), transparent 75%);
  filter:blur(8px);
}
.hero-inner{position:relative;z-index:1;padding:56px 52px 48px;max-width:900px}
.hero-title{
  font-size:clamp(27px,3.6vw,44px);line-height:1.25;font-weight:800;
  letter-spacing:-.02em;margin-top:18px;
}
.hero-sub{
  margin-top:16px;font-size:clamp(16px,1.7vw,19px);font-weight:600;color:var(--brand-700);
}
.hero-text{margin-top:16px;font-size:15.5px;line-height:1.95;color:var(--ink-500);max-width:760px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.hero-points{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px;padding-top:26px;border-top:1px dashed var(--line)}
.hero-points li{
  display:flex;align-items:center;gap:9px;font-size:14px;color:var(--ink-700);font-weight:500;
  background:#f6faff;border:1px solid #dce9fb;border-radius:999px;padding:8px 16px;
}
.hero-points li i{
  width:18px;height:18px;border-radius:50%;background:var(--brand-600);color:#fff;
  display:grid;place-items:center;font-size:11px;font-style:normal;font-weight:700;flex:0 0 auto;
}

/* ============ 指标看板 ============ */
.metrics{
  display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:0;
  background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow-sm);overflow:hidden;
}
.metric{padding:26px 22px;border-right:1px solid var(--line);transition:background .2s}
.metric:last-child{border-right:0}
.metric:hover{background:#f7faff}
.metric b{display:block;font-size:29px;font-weight:800;color:var(--brand-700);letter-spacing:-.02em;line-height:1.2}
.metric span{display:block;margin-top:6px;font-size:13.5px;color:var(--ink-500)}

/* ============ 合集目录 ============ */
.collection-card{display:flex;flex-direction:column;height:100%}
.collection-cover{
  height:104px;border-radius:14px;margin-bottom:16px;
  background:linear-gradient(135deg,#e6f0ff,#bfe0fb);
  display:flex;align-items:flex-end;justify-content:space-between;padding:14px 16px;
}
.collection-cover span{font-size:13px;font-weight:700;color:var(--brand-900);letter-spacing:.4px}
.collection-cover em{font-style:normal;font-size:12px;color:#3d5a86}
.collection-meta{display:flex;gap:14px;margin-top:auto;padding-top:16px;font-size:13px;color:var(--ink-300)}

/* ============ 横滑推荐轨 ============ */
.rail{display:flex;gap:18px;overflow-x:auto;padding:4px 4px 18px;scroll-snap-type:x mandatory}
.rail::-webkit-scrollbar{height:8px}
.rail::-webkit-scrollbar-thumb{background:#d4e2f7;border-radius:999px}
.rail::-webkit-scrollbar-track{background:transparent}
.rail-item{
  flex:0 0 300px;scroll-snap-align:start;background:#fff;border:1px solid var(--line);
  border-radius:18px;padding:22px;box-shadow:var(--shadow-sm);transition:all .24s;
}
.rail-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#cdddf7}
.rail-thumb{
  height:88px;border-radius:12px;margin-bottom:14px;
  background:linear-gradient(135deg,#eaf3ff,#a9d5f7);position:relative;overflow:hidden;
}
.rail-thumb::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(60% 80% at 78% 16%, rgba(255,255,255,.75), transparent 70%);
}
.rail-item h4{font-size:16px;font-weight:700;line-height:1.5}
.rail-item p{font-size:14px;color:var(--ink-500);margin-top:8px;line-height:1.8}
.rail-foot{display:flex;align-items:center;justify-content:space-between;margin-top:14px;font-size:12.5px;color:var(--ink-300)}

/* ============ 排行列表 ============ */
.rank-list{background:#fff;border:1px solid var(--line);border-radius:20px;overflow:hidden;box-shadow:var(--shadow-sm)}
.rank-head,.rank-row{
  display:grid;grid-template-columns:56px minmax(0,1fr) 92px 92px 92px 104px;
  align-items:center;gap:10px;padding:14px 22px;
}
.rank-head{background:#f3f7fd;font-size:13px;font-weight:600;color:var(--ink-500);border-bottom:1px solid var(--line)}
.rank-row{border-bottom:1px solid #eef3fa;transition:background .2s}
.rank-row:last-child{border-bottom:0}
.rank-row:hover{background:#f8fbff}
.rank-no{
  font-size:15px;font-weight:800;color:var(--brand-600);
  width:32px;height:32px;border-radius:10px;background:var(--brand-100);
  display:grid;place-items:center;
}
.rank-main strong{display:block;font-size:15px;font-weight:700}
.rank-main span{display:block;font-size:13px;color:var(--ink-300);margin-top:3px}
.rank-metric{text-align:center}
.rank-metric b{display:block;font-size:15px;font-weight:700;color:var(--ink-900)}
.rank-metric span{font-size:12px;color:var(--ink-300)}
.rank-trend{text-align:right;font-size:13px;font-weight:600;color:#0e9f6e}
.rank-trend.flat{color:var(--ink-300)}

/* ============ 专题索引 ============ */
.index-block{background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px;box-shadow:var(--shadow-sm);transition:all .24s}
.index-block:hover{border-color:#cdddf7;box-shadow:var(--shadow-md)}
.index-block h4{font-size:16px;font-weight:700;display:flex;align-items:center;justify-content:space-between}
.index-block h4 em{font-style:normal;font-size:12.5px;font-weight:600;color:var(--brand-600);background:var(--brand-100);border-radius:999px;padding:3px 10px}
.index-block p{font-size:14px;color:var(--ink-500);margin-top:10px;line-height:1.8}
.index-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}

/* ============ 场景矩阵 ============ */
.scene{
  background:#fff;border:1px solid var(--line);border-radius:18px;padding:24px;
  box-shadow:var(--shadow-sm);transition:all .24s;border-top:3px solid var(--brand-500);
}
.scene:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.scene h4{font-size:16.5px;font-weight:700;margin-top:14px}
.scene p{font-size:14px;color:var(--ink-500);margin-top:10px;line-height:1.82}
.scene-icon{
  width:44px;height:44px;border-radius:14px;background:var(--brand-100);color:var(--brand-700);
  display:grid;place-items:center;font-size:17px;font-weight:800;
}

/* ============ 对比区 ============ */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.compare-col{background:#fff;border:1px solid var(--line);border-radius:20px;padding:28px;box-shadow:var(--shadow-sm)}
.compare-col.highlight{border-color:#bcd7fb;box-shadow:0 20px 44px rgba(29,106,229,.12);position:relative}
.compare-col h4{font-size:17px;font-weight:700;margin-bottom:18px;display:flex;align-items:center;gap:10px}
.compare-col h4 span{font-size:12.5px;font-weight:600;border-radius:999px;padding:3px 10px}
.compare-col.highlight h4 span{background:var(--brand-600);color:#fff}
.compare-col:not(.highlight) h4 span{background:#eef3fa;color:var(--ink-500)}
.compare-row{display:flex;gap:12px;padding:12px 0;border-bottom:1px dashed #e8eefa;font-size:14.5px}
.compare-row:last-child{border-bottom:0}
.compare-row i{font-style:normal;font-weight:700;color:var(--brand-600);flex:0 0 auto}
.compare-col:not(.highlight) .compare-row i{color:var(--ink-300)}
.compare-row p{color:var(--ink-500);font-size:14px;line-height:1.75}

/* ============ 里程碑 ============ */
.timeline{position:relative;padding-left:26px}
.timeline::before{content:"";position:absolute;left:6px;top:8px;bottom:8px;width:2px;background:linear-gradient(180deg,var(--brand-500),#dbe8fa)}
.timeline-item{position:relative;padding:0 0 30px 24px}
.timeline-item:last-child{padding-bottom:0}
.timeline-item::before{
  content:"";position:absolute;left:-26px;top:7px;width:14px;height:14px;border-radius:50%;
  background:#fff;border:3px solid var(--brand-600);box-shadow:0 0 0 4px rgba(59,140,247,.14);
}
.timeline-item b{display:inline-block;font-size:13px;font-weight:700;color:var(--brand-700);background:var(--brand-100);border-radius:8px;padding:3px 10px}
.timeline-item h4{font-size:16.5px;font-weight:700;margin-top:10px}
.timeline-item p{font-size:14.5px;color:var(--ink-500);margin-top:8px;line-height:1.85}

/* ============ 资讯列表 ============ */
.news-item{
  display:grid;grid-template-columns:120px minmax(0,1fr);gap:20px;padding:20px 0;
  border-bottom:1px solid var(--line);transition:padding-left .22s;
}
.news-item:last-child{border-bottom:0}
.news-item:hover{padding-left:8px}
.news-date{font-size:13.5px;color:var(--ink-300);font-weight:600}
.news-body h4{font-size:16px;font-weight:700;line-height:1.55}
.news-body p{font-size:14px;color:var(--ink-500);margin-top:8px;line-height:1.8}

/* ============ 收藏分享 ============ */
.share-panel{
  background:#fff;border:1px solid var(--line);border-radius:22px;padding:32px;
  box-shadow:var(--shadow-sm);display:grid;grid-template-columns:1.15fr 1fr;gap:32px;align-items:center;
}
.share-stats{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.share-stat{background:#f5f9ff;border:1px solid #deeafb;border-radius:16px;padding:18px 20px}
.share-stat b{display:block;font-size:24px;font-weight:800;color:var(--brand-700);letter-spacing:-.01em}
.share-stat span{display:block;font-size:13px;color:var(--ink-500);margin-top:4px}

/* ============ 口碑 ============ */
.voice{
  background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px;
  box-shadow:var(--shadow-sm);transition:all .24s;
}
.voice:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#cdddf7}
.voice p{font-size:14.5px;color:var(--ink-700);line-height:1.85}
.voice-user{display:flex;align-items:center;gap:12px;margin-top:16px;padding-top:16px;border-top:1px solid #eef3fa}
.voice-avatar{
  width:38px;height:38px;border-radius:50%;background:linear-gradient(140deg,var(--brand-500),var(--brand-900));
  color:#fff;display:grid;place-items:center;font-size:14px;font-weight:700;flex:0 0 auto;
}
.voice-user b{display:block;font-size:14px;font-weight:700}
.voice-user span{display:block;font-size:12.5px;color:var(--ink-300)}

/* ============ 保障条 ============ */
.trust-bar{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:16px}
.trust-item{
  background:rgba(255,255,255,.06);border:1px solid rgba(160,190,240,.28);border-radius:16px;
  padding:22px 20px;transition:all .24s;
}
.trust-item:hover{background:rgba(255,255,255,.11);transform:translateY(-3px)}
.trust-item b{display:block;font-size:15px;font-weight:700;color:#fff}
.trust-item p{font-size:13.5px;color:#a9bcdd;margin-top:8px;line-height:1.78}
.trust-note{
  margin-top:26px;font-size:13.5px;color:#a9bcdd;background:rgba(255,255,255,.05);
  border:1px solid rgba(160,190,240,.22);border-radius:14px;padding:16px 20px;line-height:1.85;
}

/* ============ FAQ ============ */
.faq-list{display:grid;gap:14px}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px 24px;
  box-shadow:var(--shadow-sm);transition:border-color .2s,box-shadow .2s;
}
.faq-item:hover{border-color:#cdddf7;box-shadow:var(--shadow-md)}
.faq-item h4{font-size:15.5px;font-weight:700;display:flex;gap:12px;align-items:flex-start}
.faq-item h4 i{
  font-style:normal;flex:0 0 auto;width:24px;height:24px;border-radius:8px;background:var(--brand-100);
  color:var(--brand-700);display:grid;place-items:center;font-size:13px;font-weight:700;
}
.faq-item p{font-size:14.5px;color:var(--ink-500);margin-top:12px;line-height:1.9;padding-left:36px}

/* ============ 订阅转化 ============ */
.subscribe{
  background:linear-gradient(135deg,#0f3aa0 0%,#1d6ae5 55%,#3b8cf7 100%);
  border-radius:26px;padding:48px 44px;color:#fff;position:relative;overflow:hidden;
  display:grid;grid-template-columns:1.1fr 1fr;gap:36px;align-items:center;
}
.subscribe::after{
  content:"";position:absolute;right:-60px;top:-80px;width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.28),transparent 68%);
}
.subscribe h2{font-size:clamp(22px,2.4vw,30px);font-weight:800;line-height:1.35;letter-spacing:-.01em;position:relative}
.subscribe p{margin-top:14px;font-size:14.5px;color:#dbe8ff;line-height:1.9;position:relative;max-width:520px}
.subscribe-form{position:relative;display:flex;gap:10px;flex-wrap:wrap}
.subscribe-form input{
  flex:1 1 220px;min-width:180px;border:1px solid rgba(255,255,255,.45);background:rgba(255,255,255,.14);
  border-radius:999px;padding:13px 20px;color:#fff;font-size:14.5px;outline:none;transition:all .2s;
}
.subscribe-form input::placeholder{color:rgba(255,255,255,.72)}
.subscribe-form input:focus{background:rgba(255,255,255,.22);border-color:#fff;box-shadow:0 0 0 4px rgba(255,255,255,.16)}
.subscribe-form button{
  border:0;background:#fff;color:var(--brand-700);font-weight:700;font-size:15px;
  border-radius:999px;padding:13px 28px;cursor:pointer;transition:all .22s;
}
.subscribe-form button:hover{transform:translateY(-2px);box-shadow:0 14px 28px rgba(4,20,60,.28)}
.form-hint{margin-top:14px;font-size:13px;color:#c9dbff;position:relative}
.form-msg{margin-top:12px;font-size:13.5px;color:#ffffff;font-weight:600;display:none;position:relative}
.form-msg.show{display:block}

/* ============ 页脚 ============ */
.site-footer{background:#0a1730;color:#9fb2d4;padding:56px 0 26px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:36px}
.footer-logo{font-size:19px;font-weight:800;color:#fff;letter-spacing:.4px}
.site-footer p{font-size:14px;line-height:1.9;margin-top:12px;color:#8ea4c9}
.footer-col h4{font-size:14.5px;font-weight:700;color:#fff;margin-bottom:14px}
.footer-col a{display:block;font-size:14px;color:#9fb2d4;padding:6px 0;transition:color .2s,transform .2s}
.footer-col a:hover{color:#fff;transform:translateX(3px)}
.footer-bottom{
  margin-top:40px;padding-top:22px;border-top:1px solid rgba(150,180,230,.18);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:#7e95bd;
}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .grid-3,.grid-4,.grid-5{grid-template-columns:repeat(2,minmax(0,1fr))}
  .metrics{grid-template-columns:repeat(3,minmax(0,1fr))}
  .metric{border-bottom:1px solid var(--line)}
  .metric:nth-child(3n){border-right:0}
  .trust-bar{grid-template-columns:repeat(3,minmax(0,1fr))}
  .share-panel{grid-template-columns:1fr;gap:26px}
  .subscribe{grid-template-columns:1fr;padding:40px 32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .rank-head,.rank-row{grid-template-columns:48px minmax(0,1fr) 80px 80px 88px}
  .rank-head span:nth-child(4),.rank-row .rank-metric:nth-child(4){display:none}
}
@media (max-width:768px){
  .section{padding:50px 0}
  .header-top{flex-wrap:wrap;gap:12px;padding:12px 0}
  .search-box{order:3;flex:1 1 100%;max-width:none}
  .header-cta{display:none}
  .hero-inner{padding:38px 24px 34px}
  .hero-points{gap:10px}
  .hero-points li{font-size:13px;padding:7px 13px}
  .grid-2{grid-template-columns:1fr}
  .compare{grid-template-columns:1fr}
  .trust-bar{grid-template-columns:repeat(2,minmax(0,1fr))}
  .news-item{grid-template-columns:1fr;gap:8px}
  .faq-item p{padding-left:0}
  .rank-head{display:none}
  .rank-row{grid-template-columns:44px minmax(0,1fr) 66px;padding:14px 16px}
  .rank-row .rank-metric:not(:nth-child(3)){display:none}
  .rank-trend{display:none}
}
@media (max-width:520px){
  .container-x{padding:0 15px}
  .grid-3,.grid-4,.grid-5{grid-template-columns:1fr}
  .metrics{grid-template-columns:repeat(2,minmax(0,1fr))}
  .metric{padding:20px 16px}
  .metric b{font-size:24px}
  .trust-bar{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .hero-title{font-size:25px}
  .subscribe{padding:32px 22px;border-radius:20px}
  .share-panel{padding:24px 20px}
  .rail-item{flex:0 0 260px}
}

/* roulang page: category3 */
:root{
 --brand-900:#0b2a6f;
 --brand-700:#1a4fc4;
 --brand-600:#1d6ae5;
 --brand-500:#3b8cf7;
 --brand-100:#e8f0ff;
 --accent-500:#0ea5e9;
 --accent-200:#c7ecfb;
 --ink-900:#0d1626;
 --ink-700:#2b3a52;
 --ink-500:#5b6b85;
 --ink-300:#8d9ab1;
 --line:#e2e8f3;
 --bg:#f6f9fd;
 --surface:#ffffff;
 --radius-lg:20px;
 --radius-md:14px;
 --radius-sm:10px;
 --shadow-sm:0 2px 10px rgba(15,40,90,.05);
 --shadow-md:0 16px 36px rgba(15,40,90,.10);
 --shadow-lg:0 28px 64px rgba(13,40,100,.13);
 --maxw:1200px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
 margin:0;
 background:var(--bg);
 color:var(--ink-900);
 font-family:system-ui,-apple-system,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
 line-height:1.75;
 font-size:16px;
 -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,select{font:inherit;color:inherit}
:focus-visible{outline:3px solid rgba(59,140,247,.45);outline-offset:2px;border-radius:8px}
.container-x{max-width:var(--maxw);margin:0 auto;padding:0 20px}
.section{padding:68px 0}
.section.tight{padding:44px 0}
.section.alt{background:linear-gradient(180deg,#ffffff 0%,#f2f7ff 100%);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section.soft{background:#eef4fd;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.h1{font-size:clamp(26px,3.4vw,40px);line-height:1.28;font-weight:800;letter-spacing:-.02em;margin:0}
.h2{font-size:clamp(21px,2.4vw,30px);line-height:1.35;font-weight:800;letter-spacing:-.01em;margin:0}
.h3{font-size:18px;line-height:1.45;font-weight:700;margin:0}
.lead{color:var(--ink-500);font-size:15.5px;line-height:1.9;margin:12px 0 0;max-width:820px}
.section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;margin-bottom:34px;flex-wrap:wrap}
.eyebrow{
 display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
 color:var(--brand-700);background:var(--brand-100);border-radius:999px;padding:6px 14px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand-600)}
/* ============ 顶部导航 ============ */
.site-header{
 position:sticky;top:0;z-index:60;
 background:rgba(255,255,255,.92);
 backdrop-filter:blur(12px);
 border-bottom:1px solid var(--line);
}
.header-top{display:flex;align-items:center;gap:20px;padding:14px 0}
.brand{display:flex;align-items:center;gap:11px;flex:0 0 auto}
.brand-mark{
 width:40px;height:40px;border-radius:13px;
 background:linear-gradient(150deg,var(--brand-600),var(--brand-900));
 color:#fff;display:grid;place-items:center;font-weight:700;font-size:17px;
 box-shadow:0 8px 18px rgba(26,79,196,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text b{font-size:18px;font-weight:700;letter-spacing:.2px}
.brand-text span{font-size:12px;color:var(--ink-300);font-weight:500}
.search-box{
 flex:1 1 auto;max-width:430px;display:flex;align-items:center;gap:8px;
 background:#fff;border:1px solid var(--line);border-radius:999px;
 padding:5px 5px 5px 16px;transition:border-color .2s,box-shadow .2s;
}
.search-box:focus-within{border-color:var(--brand-500);box-shadow:0 0 0 4px rgba(59,140,247,.14)}
.search-box svg{flex:0 0 auto;color:var(--ink-300)}
.search-box input{flex:1;border:0;outline:0;background:transparent;font-size:14px;min-width:60px}
.search-box button{
 border:0;background:var(--brand-600);color:#fff;border-radius:999px;
 padding:8px 18px;font-size:14px;font-weight:600;cursor:pointer;transition:background .2s,transform .2s;
}
.search-box button:hover{background:var(--brand-700)}
.search-box button:active{transform:scale(.97)}
.header-cta{flex:0 0 auto}
.channel-bar{background:#ffffff;border-top:1px solid var(--line)}
.channel-tabs{
 display:flex;gap:8px;overflow-x:auto;padding:10px 0;
 scrollbar-width:none;-ms-overflow-style:none;
}
.channel-tabs::-webkit-scrollbar{display:none}
.channel-tab{
 flex:0 0 auto;font-size:14.5px;font-weight:600;color:var(--ink-500);
 padding:8px 18px;border-radius:999px;border:1px solid transparent;
 transition:all .2s ease;white-space:nowrap;
}
.channel-tab:hover{color:var(--brand-700);background:var(--brand-100)}
.channel-tab.is-active{color:#fff;background:var(--brand-700);box-shadow:0 8px 18px rgba(26,79,196,.24)}
/* ============ 按钮 / 徽章 / 标签 ============ */
.btn{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;
 padding:12px 24px;border-radius:999px;font-size:15px;font-weight:600;
 border:1px solid transparent;cursor:pointer;transition:all .22s ease;white-space:nowrap;
}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:0 10px 24px rgba(29,106,229,.26)}
.btn-primary:hover{background:var(--brand-700);transform:translateY(-2px);box-shadow:0 16px 32px rgba(29,106,229,.30)}
.btn-primary:active{transform:translateY(0) scale(.99)}
.btn-ghost{background:#fff;color:var(--brand-700);border-color:#cdddf7}
.btn-ghost:hover{background:var(--brand-100);border-color:var(--brand-500);transform:translateY(-2px)}
.btn-sm{padding:9px 18px;font-size:14px}
.badge{
 display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:600;
 padding:4px 11px;border-radius:999px;background:var(--brand-100);color:var(--brand-700);
}
.badge-soft{background:#eef3fa;color:var(--ink-500)}
.badge-accent{background:var(--accent-200);color:#075985}
.tag{
 display:inline-block;font-size:13px;color:var(--ink-500);background:#f1f5fb;
 border:1px solid var(--line);border-radius:999px;padding:5px 13px;transition:all .2s;
}
.tag:hover{background:var(--brand-100);color:var(--brand-700);border-color:#c9dcfa}
/* ============ 频道头图 ============ */
.channel-hero{padding:40px 0 20px}
.hero-panel{
 position:relative;overflow:hidden;border-radius:28px;
 background:linear-gradient(135deg,#0b2a6f 0%,#1544a8 52%,#1d6ae5 100%);
 color:#eaf1ff;box-shadow:var(--shadow-lg);
 display:grid;grid-template-columns:1.55fr 1fr;gap:0;
}
.hero-panel::after{
 content:"";position:absolute;inset:auto -10% -60% auto;width:520px;height:520px;border-radius:50%;
 background:radial-gradient(circle at 30% 30%,rgba(125,211,252,.34),transparent 65%);
 pointer-events:none;
}
.hero-main{position:relative;z-index:1;padding:48px 48px 44px}
.hero-side{
 position:relative;z-index:1;padding:40px 40px 36px;background:rgba(255,255,255,.08);
 border-left:1px solid rgba(255,255,255,.16);
}
.hero-identity{display:flex;align-items:center;gap:16px}
.hero-avatar{
 width:68px;height:68px;border-radius:22px;flex:0 0 auto;
 background:linear-gradient(150deg,#ffffff,#cfe1ff);color:var(--brand-900);
 display:grid;place-items:center;font-size:26px;font-weight:800;
 box-shadow:0 14px 30px rgba(4,20,60,.34);
}
.hero-kicker{font-size:13px;letter-spacing:.16em;text-transform:uppercase;color:#a9c6ff;margin:0 0 6px;font-weight:600}
.hero-title{margin:0;font-size:clamp(24px,3vw,36px);line-height:1.3;font-weight:800;color:#fff;letter-spacing:-.01em}
.hero-desc{margin:20px 0 0;font-size:15.5px;line-height:1.95;color:#c9daff;max-width:640px}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.stat-pill{
 display:inline-flex;align-items:baseline;gap:7px;font-size:13.5px;color:#dbe8ff;
 background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);
 padding:7px 15px;border-radius:999px;transition:background .2s,border-color .2s;
}
.stat-pill:hover{background:rgba(255,255,255,.2);border-color:rgba(255,255,255,.36)}
.stat-pill b{font-size:16px;color:#fff;font-weight:800}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-actions .btn-primary{background:#fff;color:var(--brand-900);box-shadow:0 14px 30px rgba(3,16,50,.3)}
.hero-actions .btn-primary:hover{background:#eaf1ff}
.hero-actions .btn-outline{
 background:transparent;color:#eaf1ff;border-color:rgba(255,255,255,.42);
}
.hero-actions .btn-outline:hover{background:rgba(255,255,255,.14);border-color:#fff}
.side-title{font-size:13px;font-weight:700;letter-spacing:.12em;color:#a9c6ff;margin:0 0 14px}
.tick-list{list-style:none;margin:0;padding:0;display:grid;gap:12px}
.tick-list li{
 display:flex;gap:12px;font-size:14px;color:#d3e1ff;line-height:1.7;
 padding-bottom:12px;border-bottom:1px dashed rgba(255,255,255,.18);
}
.tick-list li:last-child{border-bottom:0;padding-bottom:0}
.tick-list li span{
 flex:0 0 auto;font-weight:700;color:#fff;font-variant-numeric:tabular-nums;
 background:rgba(255,255,255,.14);border-radius:8px;padding:2px 9px;font-size:13px;
}
.hot-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}
.hot-tags .tag{
 background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.2);color:#dbe8ff;font-size:12.5px;
}
.hot-tags .tag:hover{background:rgba(255,255,255,.24);color:#fff;border-color:rgba(255,255,255,.4)}
/* ============ 通用卡片与网格 ============ */
.card{
 background:#fff;border:1px solid var(--line);border-radius:18px;padding:24px;
 box-shadow:var(--shadow-sm);transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#cdddf7}
.card p{color:var(--ink-500);font-size:14.5px;line-height:1.85;margin:10px 0 0}
.card-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px}
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
/* ============ 指标看板 ============ */
.kpi-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.kpi-card{
 background:#fff;border:1px solid var(--line);border-radius:18px;padding:24px 22px;
 box-shadow:var(--shadow-sm);position:relative;overflow:hidden;
 transition:transform .24s ease,box-shadow .24s ease;
}
.kpi-card::before{
 content:"";position:absolute;left:0;top:0;bottom:0;width:4px;
 background:linear-gradient(180deg,var(--brand-500),var(--brand-900));
 opacity:.85;
}
.kpi-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.kpi-label{font-size:13.5px;color:var(--ink-500);font-weight:600;margin:0}
.kpi-value{
 font-size:34px;font-weight:800;line-height:1.15;margin:8px 0 0;
 color:var(--brand-900);font-variant-numeric:tabular-nums;
}
.kpi-value small{font-size:15px;font-weight:600;color:var(--ink-500);margin-left:4px}
.kpi-note{margin:10px 0 0;font-size:13.5px;color:var(--ink-300)}
.kpi-note b{color:#0f9d6c;font-weight:700}
.kpi-note b.down{color:#d97706}
.board-foot{
 margin-top:22px;display:flex;flex-wrap:wrap;gap:14px 26px;align-items:center;
 background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);
 padding:18px 24px;box-shadow:var(--shadow-sm);font-size:14px;color:var(--ink-500);
}
.board-foot b{color:var(--brand-700);font-weight:700}
/* ============ 栏目矩阵 ============ */
.matrix-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.matrix-card{
 background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:24px;
 box-shadow:var(--shadow-sm);transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
 display:flex;flex-direction:column;gap:12px;
}
.matrix-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#cdddf7}
.matrix-head{display:flex;align-items:center;justify-content:space-between;gap:12px}
.matrix-ico{
 width:42px;height:42px;border-radius:13px;display:grid;place-items:center;
 background:var(--brand-100);color:var(--brand-700);font-weight:800;font-size:16px;
}
.matrix-count{font-size:13px;font-weight:700;color:var(--brand-700);background:#f1f6ff;border:1px solid #dbe8fd;border-radius:999px;padding:4px 12px}
.matrix-card h3{margin:0;font-size:17px;font-weight:700}
.matrix-card p{margin:0;color:var(--ink-500);font-size:14.5px;line-height:1.85}
.matrix-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:4px}
/* ============ 对比区 ============ */
.compare-wrap{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.compare-col{
 background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
 padding:26px;box-shadow:var(--shadow-sm);
}
.compare-col h3{margin:0 0 6px;font-size:18px;font-weight:700}
.compare-col .col-sub{margin:0 0 18px;font-size:13.5px;color:var(--ink-300)}
.compare-list{list-style:none;margin:0;padding:0;display:grid;gap:12px}
.compare-list li{
 display:flex;gap:10px;font-size:14.5px;color:var(--ink-700);line-height:1.8;
 padding:12px 14px;border-radius:var(--radius-sm);background:#f7faff;border:1px solid #e9f0fb;
}
.compare-list li i{
 font-style:normal;flex:0 0 auto;width:20px;height:20px;border-radius:50%;
 display:grid;place-items:center;font-size:12px;font-weight:800;margin-top:3px;
 background:var(--brand-100);color:var(--brand-700);
}
.compare-col.alt-col .compare-list li{background:#fbfcfe;border-color:var(--line)}
.compare-col.alt-col .compare-list li i{background:#eef3fa;color:var(--ink-500)}
.bars{margin-top:26px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:26px;box-shadow:var(--shadow-sm)}
.bar-row{display:grid;grid-template-columns:120px 1fr 62px;align-items:center;gap:14px;padding:11px 0;border-bottom:1px dashed var(--line)}
.bar-row:last-child{border-bottom:0}
.bar-name{font-size:14px;font-weight:600;color:var(--ink-700)}
.bar-track{height:10px;border-radius:999px;background:#eef3fa;overflow:hidden}
.bar-fill{height:100%;border-radius:999px;background:linear-gradient(90deg,var(--brand-500),var(--brand-700));transition:width .6s ease}
.bar-val{font-size:13.5px;font-weight:700;color:var(--brand-700);text-align:right;font-variant-numeric:tabular-nums}
/* ============ 时间线 ============ */
.timeline{position:relative;display:grid;gap:0;margin-top:8px}
.tl-item{
 display:grid;grid-template-columns:118px 1fr;gap:24px;
 padding:22px 0;border-bottom:1px solid var(--line);
}
.tl-item:last-child{border-bottom:0}
.tl-time{
 font-weight:800;font-size:16px;color:var(--brand-700);
 font-variant-numeric:tabular-nums;
}
.tl-body h3{margin:0;font-size:16.5px;font-weight:700}
.tl-body p{margin:8px 0 0;font-size:14.5px;color:var(--ink-500);line-height:1.85}
/* ============ 条目列表 ============ */
.feed-list{display:grid;gap:14px}
.feed-item{
 background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);
 padding:20px 24px;box-shadow:var(--shadow-sm);
 display:grid;grid-template-columns:96px 1fr auto;gap:20px;align-items:start;
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.feed-item:hover{transform:translateX(4px);box-shadow:var(--shadow-md);border-color:#cdddf7}
.feed-time{
 font-size:14px;font-weight:800;color:var(--brand-700);font-variant-numeric:tabular-nums;
 background:#f1f6ff;border:1px solid #dbe8fd;border-radius:var(--radius-sm);
 padding:6px 0;text-align:center;
}
.feed-body h3{margin:0;font-size:16px;font-weight:700;line-height:1.55}
.feed-body p{margin:8px 0 0;font-size:14.5px;color:var(--ink-500);line-height:1.85}
.feed-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.feed-src{font-size:13px;color:var(--ink-300);white-space:nowrap;text-align:right;line-height:1.7}
/* ============ 保障卡 ============ */
.guard-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.guard-card{
 background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
 padding:24px;box-shadow:var(--shadow-sm);transition:transform .24s ease,box-shadow .24s ease;
}
.guard-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.guard-card h3{margin:14px 0 0;font-size:16.5px;font-weight:700}
.guard-card p{margin:10px 0 0;font-size:14.5px;color:var(--ink-500);line-height:1.85}
/* ============ 快答 / FAQ ============ */
.qa-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.qa-card{
 background:#fff;border:1px solid var(--line);border-left:4px solid var(--brand-500);
 border-radius:var(--radius-md);padding:22px 24px;box-shadow:var(--shadow-sm);
 transition:box-shadow .24s ease,transform .24s ease;
}
.qa-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}
.qa-card h3{margin:0;font-size:16px;font-weight:700}
.qa-card p{margin:10px 0 0;font-size:14.5px;color:var(--ink-500);line-height:1.85}
.faq-list{display:grid;gap:12px}
.faq-item{
 background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);
 box-shadow:var(--shadow-sm);overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item:hover{border-color:#cdddf7}
.faq-item[open]{box-shadow:var(--shadow-md);border-color:#cdddf7}
.faq-item summary{
 cursor:pointer;list-style:none;padding:18px 24px;font-size:15.5px;font-weight:600;
 display:flex;align-items:center;justify-content:space-between;gap:16px;color:var(--ink-900);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
 content:"+";flex:0 0 auto;width:26px;height:26px;border-radius:50%;
 display:grid;place-items:center;background:var(--brand-100);color:var(--brand-700);
 font-size:16px;font-weight:700;transition:transform .2s ease;
}
.faq-item[open] summary::after{content:"−";background:var(--brand-600);color:#fff}
.faq-item p{margin:0;padding:0 24px 20px;font-size:14.5px;color:var(--ink-500);line-height:1.9}
/* ============ 订阅 ============ */
.subscribe-panel{
 background:linear-gradient(120deg,#0b2a6f,#1a4fc4 62%,#2a7cf0);
 border-radius:28px;color:#eaf1ff;padding:48px;box-shadow:var(--shadow-lg);
 display:grid;grid-template-columns:1.1fr 1fr;gap:40px;align-items:center;
 position:relative;overflow:hidden;
}
.subscribe-panel::before{
 content:"";position:absolute;right:-80px;top:-90px;width:340px;height:340px;border-radius:50%;
 background:radial-gradient(circle at 35% 35%,rgba(199,236,251,.34),transparent 68%);
}
.subscribe-panel h2{margin:14px 0 0;font-size:clamp(21px,2.4vw,30px);font-weight:800;color:#fff;line-height:1.35}
.subscribe-panel p{margin:14px 0 0;font-size:15px;line-height:1.9;color:#c9daff}
.subscribe-form{position:relative;z-index:1;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.22);border-radius:var(--radius-lg);padding:24px}
.field{display:grid;gap:8px;margin-bottom:14px}
.field label{font-size:13.5px;font-weight:600;color:#dbe8ff}
.field input,.field select{
 width:100%;border-radius:var(--radius-sm);border:1px solid rgba(255,255,255,.28);
 background:rgba(255,255,255,.94);color:var(--ink-900);
 padding:11px 14px;font-size:14.5px;outline:0;transition:box-shadow .2s ease,border-color .2s ease;
}
.field input:focus,.field select:focus{border-color:#fff;box-shadow:0 0 0 4px rgba(255,255,255,.24)}
.subscribe-form .btn-primary{width:100%;background:#fff;color:var(--brand-900);margin-top:6px}
.subscribe-form .btn-primary:hover{background:#eaf1ff}
.form-hint{margin:12px 0 0;font-size:13px;color:#b9cdf3;line-height:1.7}
/* ============ 页脚 ============ */
.site-footer{background:#0c1c3c;color:#b8c8e6;padding:56px 0 26px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:36px}
.footer-logo{font-size:19px;font-weight:800;color:#fff;margin-bottom:12px}
.site-footer p{margin:0;font-size:14.5px;line-height:1.9;color:#9fb2d4;max-width:460px}
.footer-col h4{margin:0 0 14px;font-size:14px;font-weight:700;color:#fff;letter-spacing:.04em}
.footer-col a{display:block;font-size:14.5px;color:#9fb2d4;padding:5px 0;transition:color .2s,transform .2s}
.footer-col a:hover{color:#fff;transform:translateX(3px)}
.footer-bottom{
 margin-top:36px;padding-top:20px;border-top:1px solid #1c3159;
 display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
 font-size:13.5px;color:#7e93b8;
}
/* ============ 响应式 ============ */
@media (max-width:1024px){
 .hero-panel{grid-template-columns:1fr}
 .hero-side{border-left:0;border-top:1px solid rgba(255,255,255,.16)}
 .hero-main{padding:40px 34px 34px}
 .hero-side{padding:32px 34px 30px}
 .kpi-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
 .matrix-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
 .guard-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
 .qa-grid{grid-template-columns:1fr 1fr}
 .compare-wrap{grid-template-columns:1fr}
 .footer-grid{grid-template-columns:1fr 1fr}
 .subscribe-panel{grid-template-columns:1fr;padding:38px 32px}
}
@media (max-width:768px){
 .header-top{flex-wrap:wrap;gap:12px}
 .search-box{order:3;flex:1 1 100%;max-width:none}
 .header-cta{padding:9px 15px;font-size:13.5px}
 .section{padding:48px 0}
 .section-head{margin-bottom:26px}
 .hero-main{padding:32px 22px 28px}
 .hero-side{padding:26px 22px 26px}
 .hero-avatar{width:58px;height:58px;border-radius:18px;font-size:22px}
 .feed-item{grid-template-columns:1fr;gap:14px}
 .feed-time{width:76px}
 .feed-src{text-align:left}
 .tl-item{grid-template-columns:1fr;gap:6px}
 .bar-row{grid-template-columns:96px 1fr 54px;gap:10px}
 .subscribe-panel::before{display:none}
}
@media (max-width:520px){
 .kpi-grid,.matrix-grid,.guard-grid,.qa-grid,.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
 .footer-grid{grid-template-columns:1fr}
 .brand-text span{display:none}
 .hero-badges{gap:8px}
 .stat-pill{font-size:12.5px;padding:6px 12px}
 .subscribe-panel{padding:30px 20px;border-radius:22px}
 .compare-col,.bars,.card,.kpi-card,.matrix-card,.guard-card,.qa-card{padding:20px}
 .footer-bottom{flex-direction:column;gap:6px}
}

/* roulang page: category1 */
:root{
  --brand-900:#0b2a6f;
  --brand-700:#1a4fc4;
  --brand-600:#1d6ae5;
  --brand-500:#3b8cf7;
  --brand-100:#e8f0ff;
  --accent-500:#0ea5e9;
  --accent-200:#c7ecfb;
  --ink-900:#0d1626;
  --ink-700:#2b3a52;
  --ink-500:#5b6b85;
  --ink-300:#8d9ab1;
  --line:#e2e8f3;
  --bg:#f6f9fd;
  --surface:#ffffff;
  --radius-lg:20px;
  --radius-md:14px;
  --radius-sm:10px;
  --shadow-sm:0 2px 10px rgba(15,40,90,.05);
  --shadow-md:0 16px 36px rgba(15,40,90,.10);
  --shadow-lg:0 28px 64px rgba(13,40,100,.13);
  --maxw:1200px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--ink-900);
  font-family:system-ui,-apple-system,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  line-height:1.75;font-size:16px;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.35}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:3px solid rgba(59,140,247,.45);outline-offset:2px;border-radius:10px}
.container-x{max-width:var(--maxw);margin:0 auto;padding:0 20px}

/* ============ 通用板块 ============ */
.section{padding:68px 0}
.section.tight{padding:44px 0}
.section.alt{background:linear-gradient(180deg,#ffffff 0%,#f2f7ff 100%);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section.dark{background:#0c1c3c;color:#e8eefb}
.section.dark .h2{color:#fff}
.section.dark .lead{color:#a9bcdd}
.h2{font-size:clamp(22px,2.3vw,30px);letter-spacing:-.01em}
.h3{font-size:19px}
.lead{color:var(--ink-500);font-size:15.5px;line-height:1.9;margin-top:12px;max-width:780px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  color:var(--brand-700);background:var(--brand-100);border-radius:999px;padding:6px 14px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand-600)}
.section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;margin-bottom:34px;flex-wrap:wrap}
.section-head > div{max-width:760px}
.section-head .h2{margin-top:14px}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.93);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.header-top{display:flex;align-items:center;gap:20px;padding:14px 0}
.brand{display:flex;align-items:center;gap:11px;flex:0 0 auto}
.brand-mark{
  width:40px;height:40px;border-radius:13px;
  background:linear-gradient(150deg,var(--brand-600),var(--brand-900));
  color:#fff;display:grid;place-items:center;font-weight:700;font-size:17px;
  box-shadow:0 8px 18px rgba(26,79,196,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text b{font-size:18px;font-weight:700;letter-spacing:.2px}
.brand-text span{font-size:12px;color:var(--ink-300);font-weight:500}
.search-box{
  flex:1 1 auto;max-width:430px;display:flex;align-items:center;gap:8px;
  background:#fff;border:1px solid var(--line);border-radius:999px;
  padding:5px 5px 5px 16px;transition:border-color .2s,box-shadow .2s;
}
.search-box:focus-within{border-color:var(--brand-500);box-shadow:0 0 0 4px rgba(59,140,247,.14)}
.search-box svg{flex:0 0 auto;color:var(--ink-300)}
.search-box input{flex:1;border:0;outline:0;background:transparent;font-size:14px;min-width:60px}
.search-box button{
  border:0;background:var(--brand-600);color:#fff;border-radius:999px;
  padding:8px 18px;font-size:14px;font-weight:600;cursor:pointer;transition:background .2s,transform .2s;
}
.search-box button:hover{background:var(--brand-700)}
.header-cta{flex:0 0 auto}
.channel-bar{background:#f8fbff;border-top:1px solid var(--line)}
.channel-tabs{display:flex;gap:8px;overflow-x:auto;padding:10px 0;scrollbar-width:thin}
.channel-tabs::-webkit-scrollbar{height:5px}
.channel-tabs::-webkit-scrollbar-thumb{background:#cfdcf0;border-radius:999px}
.channel-tab{
  padding:8px 18px;border-radius:999px;font-size:14px;font-weight:600;color:var(--ink-500);
  white-space:nowrap;border:1px solid transparent;transition:all .2s ease;
}
.channel-tab:hover{background:var(--brand-100);color:var(--brand-700)}
.channel-tab.is-active{background:var(--brand-600);color:#fff;box-shadow:0 8px 18px rgba(29,106,229,.25)}

/* ============ 按钮 / 标签 / 卡片 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:999px;font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;transition:all .22s ease;white-space:nowrap;
}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:0 10px 24px rgba(29,106,229,.26)}
.btn-primary:hover{background:var(--brand-700);transform:translateY(-2px);box-shadow:0 16px 32px rgba(29,106,229,.30)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:#fff;color:var(--brand-700);border-color:#cdddf7}
.btn-ghost:hover{background:var(--brand-100);border-color:var(--brand-500);transform:translateY(-2px)}
.btn-sm{padding:9px 18px;font-size:14px}
.badge{
  display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:600;
  padding:4px 11px;border-radius:999px;background:var(--brand-100);color:var(--brand-700);
}
.badge-soft{background:#eef3fa;color:var(--ink-500)}
.badge-accent{background:var(--accent-200);color:#075985}
.tag{
  display:inline-block;font-size:13px;color:var(--ink-500);background:#f1f5fb;
  border:1px solid var(--line);border-radius:999px;padding:5px 13px;transition:all .2s;
}
.tag:hover{background:var(--brand-100);color:var(--brand-700);border-color:#c9dcfa}
.card{
  background:#fff;border:1px solid var(--line);border-radius:18px;padding:24px;
  box-shadow:var(--shadow-sm);transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#cdddf7}
.card p{color:var(--ink-500);font-size:14.5px;line-height:1.85;margin-top:10px}
.card-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px}
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.divider{height:1px;background:var(--line);border:0;margin:0}

/* ============ 分类页首屏 ============ */
.cat-hero{padding:38px 0 8px}
.crumb{display:flex;align-items:center;gap:9px;font-size:13px;color:var(--ink-300);margin-bottom:20px;flex-wrap:wrap}
.crumb a{color:var(--ink-500);transition:color .2s}
.crumb a:hover{color:var(--brand-600)}
.crumb i{font-style:normal;color:var(--ink-300)}
.cat-hero-grid{display:grid;grid-template-columns:1.35fr .95fr;gap:38px;align-items:start}
.cat-hero h1{
  font-size:clamp(26px,3.2vw,40px);line-height:1.28;letter-spacing:-.02em;margin-top:18px;
}
.cat-hero-sub{
  margin-top:14px;font-size:clamp(15.5px,1.6vw,18px);font-weight:600;color:var(--brand-700);
}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}
.hero-meta{display:flex;gap:22px;flex-wrap:wrap;margin-top:26px;font-size:13.5px;color:var(--ink-500)}
.hero-meta span{display:inline-flex;align-items:center;gap:7px}
.hero-meta span::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--accent-500)}

.side-panel{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:26px;box-shadow:var(--shadow-md);
}
.side-panel-head{display:flex;align-items:center;justify-content:space-between;gap:12px}
.side-panel-head h2{font-size:16px;font-weight:700}
.side-panel-note{font-size:13px;color:var(--ink-300);margin-top:4px}
.meter{margin-top:18px}
.meter-row{display:grid;grid-template-columns:74px 1fr 52px;align-items:center;gap:10px;font-size:13.5px;color:var(--ink-500);margin-top:12px}
.meter-track{height:8px;border-radius:999px;background:#eaf1fb;overflow:hidden}
.meter-fill{height:100%;border-radius:999px;background:linear-gradient(90deg,var(--brand-500),var(--brand-700));transition:width .6s ease}
.meter-val{text-align:right;font-weight:700;color:var(--ink-700)}
.side-panel-foot{
  margin-top:22px;padding-top:18px;border-top:1px dashed var(--line);
  display:flex;align-items:baseline;justify-content:space-between;gap:12px;flex-wrap:wrap;
}
.side-panel-foot b{font-size:24px;font-weight:800;color:var(--brand-700);letter-spacing:-.02em}
.side-panel-foot span{font-size:13px;color:var(--ink-500)}

/* ============ 数据看板 ============ */
.kpi-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.kpi{
  background:#fff;border:1px solid var(--line);border-radius:18px;padding:24px;
  box-shadow:var(--shadow-sm);transition:transform .24s ease,box-shadow .24s ease;
}
.kpi:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.kpi-num{font-size:clamp(26px,2.6vw,34px);font-weight:800;color:var(--brand-700);letter-spacing:-.02em;line-height:1.15}
.kpi-num small{font-size:15px;font-weight:600;color:var(--ink-500);margin-left:4px}
.kpi-label{font-size:15px;font-weight:700;margin-top:8px}
.kpi-note{font-size:13.5px;color:var(--ink-500);margin-top:6px;line-height:1.8}

/* ============ 主题矩阵卡片 ============ */
.matrix-card{display:flex;flex-direction:column;height:100%}
.matrix-icon{
  width:44px;height:44px;border-radius:14px;display:grid;place-items:center;
  background:var(--brand-100);color:var(--brand-700);margin-bottom:16px;
}
.matrix-card .h3{margin-bottom:4px}
.matrix-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}

/* ============ 阅读方式对比 ============ */
.compare{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}
.compare-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:28px;box-shadow:var(--shadow-sm);transition:transform .24s ease,box-shadow .24s ease;
}
.compare-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.compare-card.is-feature{
  border-color:#bfd8ff;background:linear-gradient(160deg,#ffffff 0%,#f2f7ff 100%);
  box-shadow:var(--shadow-md);
}
.compare-card h3{font-size:19px;display:flex;align-items:center;gap:10px}
.compare-card > p{color:var(--ink-500);font-size:14.5px;line-height:1.85;margin-top:10px}
.compare-list{margin-top:18px}
.compare-list li{
  display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:var(--ink-700);
  padding:9px 0;border-bottom:1px dashed var(--line);
}
.compare-list li:last-child{border-bottom:0}
.compare-list li::before{
  content:"";flex:0 0 auto;width:6px;height:6px;border-radius:50%;
  background:var(--brand-500);margin-top:9px;
}

/* ============ 里程碑时间线 ============ */
.timeline{position:relative;padding-left:30px;margin-top:6px}
.timeline::before{
  content:"";position:absolute;left:7px;top:8px;bottom:8px;width:2px;
  background:linear-gradient(180deg,var(--brand-500),rgba(59,140,247,.12));
}
.tl-item{position:relative;padding-bottom:30px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{
  content:"";position:absolute;left:-30px;top:6px;width:14px;height:14px;border-radius:50%;
  background:#fff;border:3px solid var(--brand-600);box-shadow:0 0 0 4px rgba(59,140,247,.14);
}
.tl-date{font-size:13px;font-weight:700;color:var(--brand-700);letter-spacing:.03em}
.tl-title{font-size:17px;font-weight:700;margin-top:4px}
.tl-text{font-size:14.5px;color:var(--ink-500);margin-top:6px;max-width:760px;line-height:1.85}

/* ============ 最新收录列表 ============ */
.news-list{display:grid;gap:14px}
.news-item{
  display:grid;grid-template-columns:108px 1fr auto;gap:20px;align-items:center;
  background:#fff;border:1px solid var(--line);border-radius:16px;padding:18px 22px;
  box-shadow:var(--shadow-sm);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.news-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:#cdddf7}
.news-date{font-size:13px;font-weight:700;color:var(--ink-300);letter-spacing:.02em}
.news-title{font-size:16.5px;font-weight:700}
.news-desc{font-size:14px;color:var(--ink-500);margin-top:5px;line-height:1.8}
.news-side{display:flex;flex-direction:column;align-items:flex-end;gap:8px}

/* ============ 保障卡 ============ */
.assure-card{text-align:left}
.assure-num{
  font-size:13px;font-weight:800;color:var(--brand-500);letter-spacing:.14em;
}
.assure-card h3{font-size:16.5px;margin-top:10px}
.assure-card p{font-size:14px;color:var(--ink-500);line-height:1.85;margin-top:8px}

/* ============ 问答 ============ */
.qa-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);padding:22px;box-shadow:var(--shadow-sm);transition:transform .22s ease,box-shadow .22s ease}
.qa-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}
.qa-card h3{font-size:16px}
.qa-card p{font-size:14px;color:var(--ink-500);margin-top:8px;line-height:1.85}

.faq-list{display:grid;gap:12px;max-width:940px}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:16px;padding:2px 22px;
  box-shadow:var(--shadow-sm);transition:border-color .2s,box-shadow .2s;
}
.faq-item[open]{border-color:#cdddf7;box-shadow:var(--shadow-md)}
.faq-item summary{
  cursor:pointer;list-style:none;padding:17px 0;font-size:16px;font-weight:600;
  display:flex;justify-content:space-between;gap:16px;align-items:center;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";flex:0 0 auto;font-size:20px;line-height:1;color:var(--brand-600);font-weight:600;
}
.faq-item[open] summary::after{content:"−"}
.faq-item p{padding:0 0 18px;color:var(--ink-500);font-size:14.5px;line-height:1.9;max-width:820px}

/* ============ 转化表单 ============ */
.subscribe-panel{
  position:relative;overflow:hidden;border-radius:26px;padding:46px;
  background:linear-gradient(135deg,#0b2a6f 0%,#1a4fc4 55%,#0ea5e9 130%);
  color:#fff;box-shadow:var(--shadow-lg);
}
.subscribe-panel::before{
  content:"";position:absolute;right:-90px;top:-90px;width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.22),transparent 68%);
}
.sub-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.05fr .95fr;gap:38px;align-items:center}
.sub-grid h2{font-size:clamp(21px,2.4vw,28px);color:#fff}
.sub-grid p{margin-top:12px;font-size:15px;line-height:1.9;color:#d3e2ff;max-width:520px}
.sub-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.sub-points span{
  font-size:13px;padding:6px 14px;border-radius:999px;
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.24);color:#eaf2ff;
}
.sub-form{background:#fff;border-radius:20px;padding:26px;box-shadow:0 24px 52px rgba(6,20,50,.28)}
.sub-form label{display:block;font-size:13.5px;font-weight:600;color:var(--ink-700);margin-bottom:7px}
.sub-form input[type="email"],
.sub-form select{
  width:100%;padding:12px 15px;border:1px solid var(--line);border-radius:12px;
  background:#fbfdff;font-size:14.5px;transition:border-color .2s,box-shadow .2s;
}
.sub-form input[type="email"]:focus,
.sub-form select:focus{border-color:var(--brand-500);box-shadow:0 0 0 4px rgba(59,140,247,.14);outline:0}
.field{margin-bottom:16px}
.sub-form .btn{width:100%}
.sub-hint{font-size:12.5px;color:var(--ink-300);margin-top:12px;line-height:1.7}

/* ============ 页脚 ============ */
.site-footer{background:#0c1c3c;color:#a9bcdd;padding:56px 0 26px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:36px}
.footer-logo{color:#fff;font-size:20px;font-weight:700;margin-bottom:14px}
.site-footer p{font-size:14.5px;line-height:1.9;color:#9db1d4;max-width:440px}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:14px}
.footer-col a{display:block;font-size:14px;color:#a9bcdd;padding:5px 0;transition:color .2s,transform .2s}
.footer-col a:hover{color:#fff;transform:translateX(3px)}
.footer-bottom{
  margin-top:36px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:13.5px;color:#8ba0c6;
}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .cat-hero-grid{grid-template-columns:1fr;gap:28px}
  .kpi-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .sub-grid{grid-template-columns:1fr;gap:28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .subscribe-panel{padding:36px}
}
@media (max-width:768px){
  .section{padding:52px 0}
  .section.tight{padding:36px 0}
  .header-top{flex-wrap:wrap;gap:12px}
  .search-box{order:3;max-width:100%;flex:1 1 100%}
  .header-cta{display:none}
  .compare{grid-template-columns:1fr}
  .news-item{grid-template-columns:1fr;gap:10px}
  .news-side{flex-direction:row;align-items:center;flex-wrap:wrap}
  .faq-item{padding:2px 18px}
  .compare-card{padding:24px}
}
@media (max-width:520px){
  .container-x{padding:0 16px}
  .grid-2,.grid-3,.grid-4,.kpi-grid{grid-template-columns:1fr}
  .hero-actions .btn{width:100%}
  .subscribe-panel{padding:26px 20px;border-radius:20px}
  .sub-form{padding:20px}
  .footer-grid{grid-template-columns:1fr}
  .brand-text span{display:none}
  .timeline{padding-left:24px}
  .tl-item::before{left:-24px}
  .side-panel{padding:20px}
}

/* roulang page: category2 */
:root{
 --brand-900:#0b2a6f;
 --brand-700:#1a4fc4;
 --brand-600:#1d6ae5;
 --brand-500:#3b8cf7;
 --brand-100:#e8f0ff;
 --accent-500:#0ea5e9;
 --accent-200:#c7ecfb;
 --ink-900:#0d1626;
 --ink-700:#2b3a52;
 --ink-500:#5b6b85;
 --ink-300:#8d9ab1;
 --line:#e2e8f3;
 --bg:#f6f9fd;
 --surface:#ffffff;
 --radius-lg:20px;
 --radius-md:14px;
 --radius-sm:10px;
 --shadow-sm:0 2px 10px rgba(15,40,90,.05);
 --shadow-md:0 16px 36px rgba(15,40,90,.10);
 --shadow-lg:0 28px 64px rgba(13,40,100,.13);
 --maxw:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
html body{
 margin:0;background:var(--bg);color:var(--ink-900);
 font-family:system-ui,-apple-system,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
 line-height:1.75;font-size:16px;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:3px solid rgba(59,140,247,.5);outline-offset:2px;border-radius:6px}
.container-x{max-width:var(--maxw);margin:0 auto;padding:0 20px}
.section{padding:68px 0}
.section.tight{padding:44px 0}
.section.alt{background:linear-gradient(180deg,#ffffff 0%,#f2f7ff 100%);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section.dark{background:#0c1c3c;color:#e8eefb}
.h2{font-size:clamp(22px,2.4vw,30px);font-weight:800;letter-spacing:-.01em;line-height:1.35}
.h3{font-size:18px;font-weight:700}
.lead{color:var(--ink-500);font-size:15.5px;line-height:1.9;margin-top:12px;max-width:820px}
.eyebrow{
 display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
 color:var(--brand-700);background:var(--brand-100);border-radius:999px;padding:6px 14px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand-600)}
.section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;margin-bottom:34px;flex-wrap:wrap}
.section-head .h2{margin-top:14px}

/* ============ 顶部导航 ============ */
.site-header{
 position:sticky;top:0;z-index:60;
 background:rgba(255,255,255,.94);
 backdrop-filter:blur(12px);
 border-bottom:1px solid var(--line);
}
.header-top{display:flex;align-items:center;gap:20px;padding:14px 0}
.brand{display:flex;align-items:center;gap:11px;flex:0 0 auto}
.brand-mark{
 width:40px;height:40px;border-radius:13px;
 background:linear-gradient(150deg,var(--brand-600),var(--brand-900));
 color:#fff;display:grid;place-items:center;font-weight:700;font-size:17px;
 box-shadow:0 8px 18px rgba(26,79,196,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text b{font-size:18px;font-weight:700;letter-spacing:.2px}
.brand-text span{font-size:12px;color:var(--ink-300);font-weight:500}
.search-box{
 flex:1 1 auto;max-width:430px;display:flex;align-items:center;gap:8px;
 background:#fff;border:1px solid var(--line);border-radius:999px;
 padding:5px 5px 5px 16px;transition:border-color .2s,box-shadow .2s;
}
.search-box:focus-within{border-color:var(--brand-500);box-shadow:0 0 0 4px rgba(59,140,247,.14)}
.search-box svg{flex:0 0 auto;color:var(--ink-300)}
.search-box input{flex:1;border:0;outline:0;background:transparent;font-size:14px;min-width:60px}
.search-box button{
 border:0;background:var(--brand-600);color:#fff;border-radius:999px;
 padding:8px 18px;font-size:14px;font-weight:600;cursor:pointer;transition:background .2s;
}
.search-box button:hover{background:var(--brand-700)}
.header-cta{flex:0 0 auto}
.channel-bar{background:#fff;border-top:1px solid var(--line)}
.channel-tabs{display:flex;align-items:center;gap:8px;padding:10px 0;overflow-x:auto;scrollbar-width:none}
.channel-tabs::-webkit-scrollbar{display:none}
.channel-tab{
 padding:8px 16px;border-radius:999px;font-size:14.5px;font-weight:600;color:var(--ink-500);
 white-space:nowrap;transition:background .2s,color .2s,box-shadow .2s;
}
.channel-tab:hover{background:var(--brand-100);color:var(--brand-700)}
.channel-tab.is-active{background:var(--brand-600);color:#fff;box-shadow:0 8px 18px rgba(29,106,229,.24)}

/* ============ 按钮 / 徽章 / 标签 ============ */
.btn{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;
 padding:12px 24px;border-radius:999px;font-size:15px;font-weight:600;
 border:1px solid transparent;cursor:pointer;transition:all .22s ease;white-space:nowrap;
}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:0 10px 24px rgba(29,106,229,.26)}
.btn-primary:hover{background:var(--brand-700);transform:translateY(-2px);box-shadow:0 16px 32px rgba(29,106,229,.30)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:#fff;color:var(--brand-700);border-color:#cdddf7}
.btn-ghost:hover{background:var(--brand-100);border-color:var(--brand-500);transform:translateY(-2px)}
.btn-sm{padding:9px 18px;font-size:14px}
.badge{
 display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:600;
 padding:4px 11px;border-radius:999px;background:var(--brand-100);color:var(--brand-700);
}
.badge-soft{background:#eef3fa;color:var(--ink-500)}
.badge-accent{background:var(--accent-200);color:#075985}
.tag{
 display:inline-block;font-size:13px;color:var(--ink-500);background:#f1f5fb;
 border:1px solid var(--line);border-radius:999px;padding:5px 13px;transition:all .2s;
}
.tag:hover{background:var(--brand-100);color:var(--brand-700);border-color:#c9dcfa}
.card{
 background:#fff;border:1px solid var(--line);border-radius:18px;padding:24px;
 box-shadow:var(--shadow-sm);transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#cdddf7}
.card p{color:var(--ink-500);font-size:14.5px;line-height:1.85;margin-top:10px}
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}

/* ============ 深色首屏 ============ */
.hero-section{padding:40px 0 24px}
.hero-dark{
 position:relative;overflow:hidden;border-radius:26px;
 background:linear-gradient(135deg,#081733 0%,#0b2a6f 54%,#143d90 100%);
 color:#e8eefb;box-shadow:var(--shadow-lg);
}
.hero-dark::after{
 content:"";position:absolute;inset:0;pointer-events:none;
 background:
 radial-gradient(42% 62% at 84% 10%, rgba(56,189,248,.30), transparent 70%),
 radial-gradient(38% 54% at 10% 92%, rgba(59,140,247,.30), transparent 72%);
}
.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.12fr .88fr;gap:46px;padding:54px 50px 50px}
.hero-dark .eyebrow{background:rgba(255,255,255,.14);color:#cfe2ff}
.hero-dark .eyebrow::before{background:#7dd3fc}
.hero-title{font-size:clamp(28px,3.6vw,44px);line-height:1.22;font-weight:800;letter-spacing:-.02em;margin-top:18px;color:#fff}
.hero-sub{margin-top:14px;font-size:clamp(16px,1.65vw,19px);font-weight:600;color:#8ec5ff}
.hero-text{margin-top:16px;font-size:15.5px;line-height:1.95;color:#a9bcdd;max-width:640px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.hero-dark .btn-ghost{background:rgba(255,255,255,.08);color:#e8eefb;border-color:rgba(255,255,255,.26)}
.hero-dark .btn-ghost:hover{background:rgba(255,255,255,.18);border-color:rgba(255,255,255,.46)}
.hero-facts{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.hero-facts .tag{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.18);color:#cfe2ff}
.hero-facts .tag:hover{background:rgba(255,255,255,.16);color:#fff;border-color:rgba(255,255,255,.34)}

/* 首屏右侧数据榜单 */
.rank-card{
 background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.16);
 border-radius:18px;padding:24px 22px;backdrop-filter:blur(8px);
}
.rank-head{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:6px}
.rank-head h3{font-size:15px;font-weight:700;color:#fff}
.rank-head span{font-size:12px;color:#8ec5ff}
.rank-item{display:grid;grid-template-columns:26px 1fr;gap:12px;align-items:center;padding:11px 0;border-bottom:1px dashed rgba(255,255,255,.14)}
.rank-item:last-child{border-bottom:0}
.rank-num{
 width:26px;height:26px;border-radius:9px;background:rgba(255,255,255,.12);
 color:#cfe2ff;font-size:12.5px;font-weight:700;display:grid;place-items:center;
}
.rank-item:first-child .rank-num{background:linear-gradient(140deg,#38bdf8,#1d6ae5);color:#fff}
.rank-name{display:flex;justify-content:space-between;gap:10px;font-size:14px;color:#e8eefb;font-weight:600}
.rank-name em{font-style:normal;font-size:12.5px;color:#8ec5ff;font-weight:600;flex:0 0 auto}
.rank-bar{margin-top:7px;height:5px;border-radius:999px;background:rgba(255,255,255,.12);overflow:hidden}
.rank-bar i{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,#38bdf8,#7dd3fc)}

/* ============ 指标看板 ============ */
.metric-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.metric-card{
 background:#fff;border:1px solid var(--line);border-radius:18px;padding:26px 24px;
 box-shadow:var(--shadow-sm);transition:transform .24s ease,box-shadow .24s ease;
}
.metric-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.metric-num{font-size:clamp(28px,3vw,36px);font-weight:800;color:var(--brand-700);letter-spacing:-.02em;line-height:1.1}
.metric-num small{font-size:15px;font-weight:700;margin-left:5px;color:var(--ink-500)}
.metric-label{margin-top:10px;font-size:14.5px;font-weight:700;color:var(--ink-900)}
.metric-desc{margin-top:6px;font-size:13.5px;color:var(--ink-500);line-height:1.8}

/* ============ 专题矩阵 ============ */
.matrix-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.matrix-card{
 position:relative;overflow:hidden;background:#fff;border:1px solid var(--line);
 border-radius:18px;padding:26px 24px;box-shadow:var(--shadow-sm);
 transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.matrix-card::before{
 content:"";position:absolute;left:0;top:0;height:3px;width:100%;
 background:linear-gradient(90deg,var(--brand-600),var(--accent-500));
 opacity:0;transition:opacity .24s ease;
}
.matrix-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md);border-color:#cdddf7}
.matrix-card:hover::before{opacity:1}
.matrix-card h3{margin-top:14px;font-size:18px;font-weight:700}
.matrix-card p{margin-top:10px;color:var(--ink-500);font-size:14.5px;line-height:1.85}
.matrix-meta{
 display:flex;flex-wrap:wrap;gap:14px;margin-top:16px;padding-top:16px;
 border-top:1px dashed var(--line);font-size:13px;color:var(--ink-500);
}
.matrix-meta b{color:var(--brand-700);font-weight:700}

/* ============ 对比区 ============ */
.compare{
 background:#fff;border:1px solid var(--line);border-radius:20px;
 box-shadow:var(--shadow-sm);overflow:hidden;
}
.compare-head,.compare-row{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:16px;padding:16px 24px;align-items:center}
.compare-head{background:linear-gradient(120deg,#0b2a6f,#1a4fc4);color:#fff;font-size:14px;font-weight:700}
.compare-head span:first-child{color:#cfe2ff}
.compare-row{border-top:1px solid var(--line);font-size:14.5px}
.compare-row:nth-child(odd){background:#fafcff}
.compare-key{font-weight:700;color:var(--ink-900)}
.compare-cell{color:var(--ink-500)}
.compare-cell.strong{color:var(--brand-700);font-weight:600}

/* ============ 里程碑时间线 ============ */
.timeline{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:18px}
.tl-item{position:relative;padding-top:28px}
.tl-item::before{
 content:"";position:absolute;top:8px;left:0;width:14px;height:14px;border-radius:50%;
 background:#fff;border:3px solid var(--brand-600);box-shadow:0 0 0 4px var(--brand-100);
}
.tl-item::after{
 content:"";position:absolute;top:14px;left:22px;right:-18px;height:2px;
 background:linear-gradient(90deg,var(--brand-500),#dbe6f7);
}
.tl-item:last-child::after{display:none}
.tl-item h4{font-size:15.5px;font-weight:700}
.tl-item p{margin-top:8px;font-size:13.5px;color:var(--ink-500);line-height:1.8}

/* ============ 资讯列表 ============ */
.news-list{display:flex;flex-direction:column;gap:14px}
.news-item{
 display:grid;grid-template-columns:104px 1fr auto;gap:20px;align-items:start;
 background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px 22px;
 box-shadow:var(--shadow-sm);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.news-item:hover{transform:translateX(4px);box-shadow:var(--shadow-md);border-color:#cdddf7}
.news-date{font-size:13px;color:var(--ink-300);font-weight:600;padding-top:4px}
.news-body h3{font-size:16.5px;font-weight:700}
.news-body p{margin-top:8px;font-size:14px;color:var(--ink-500);line-height:1.8}
.news-side{display:flex;flex-direction:column;align-items:flex-end;gap:8px}
.more-link{display:inline-flex;align-items:center;gap:8px;margin-top:26px;font-size:14.5px;font-weight:600;color:var(--brand-700);transition:gap .2s,color .2s}
.more-link:hover{gap:13px;color:var(--brand-900)}

/* ============ 保障 / 快答 ============ */
.guard-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:24px;box-shadow:var(--shadow-sm);transition:transform .24s ease,box-shadow .24s ease}
.guard-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.guard-icon{
 width:42px;height:42px;border-radius:13px;display:grid;place-items:center;
 background:var(--brand-100);color:var(--brand-700);
}
.guard-card h3{margin-top:16px;font-size:16.5px;font-weight:700}
.guard-card p{margin-top:9px;font-size:14px;color:var(--ink-500);line-height:1.85}
.quick-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.quick-card{
 background:linear-gradient(180deg,#ffffff,#f8fbff);border:1px solid var(--line);
 border-radius:18px;padding:26px 24px;box-shadow:var(--shadow-sm);
 transition:transform .24s ease,box-shadow .24s ease;
}
.quick-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.quick-num{
 font-size:13px;font-weight:800;letter-spacing:.14em;color:var(--brand-600);
 border-bottom:1px dashed var(--line);padding-bottom:12px;display:block;
}
.quick-card h3{margin-top:14px;font-size:17px;font-weight:700}
.quick-card p{margin-top:10px;font-size:14.5px;color:var(--ink-500);line-height:1.85}

/* ============ FAQ ============ */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:940px}
.faq-item{
 background:#fff;border:1px solid var(--line);border-radius:16px;
 box-shadow:var(--shadow-sm);overflow:hidden;transition:border-color .22s ease,box-shadow .22s ease;
}
.faq-item[open]{border-color:#c9dcfa;box-shadow:var(--shadow-md)}
.faq-item summary{
 list-style:none;cursor:pointer;padding:19px 24px;font-size:15.5px;font-weight:700;
 display:flex;justify-content:space-between;align-items:center;gap:16px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
 content:"+";font-size:20px;line-height:1;color:var(--brand-600);font-weight:600;
 transition:transform .24s ease;
}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-a{padding:0 24px 22px;font-size:14.5px;color:var(--ink-500);line-height:1.9}

/* ============ 订阅转化 ============ */
.sub-panel{
 display:grid;grid-template-columns:1fr 1.05fr;gap:40px;align-items:center;
 background:#fff;border:1px solid var(--line);border-radius:22px;
 box-shadow:var(--shadow-lg);padding:40px 42px;
}
.sub-form{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.field{display:flex;flex-direction:column;gap:7px}
.field label{font-size:13.5px;font-weight:600;color:var(--ink-700)}
.field input,.field select{
 border:1px solid var(--line);background:#f8fbff;border-radius:12px;
 padding:12px 14px;font-size:14.5px;outline:0;width:100%;
 transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.field input:focus,.field select:focus{
 border-color:var(--brand-500);box-shadow:0 0 0 4px rgba(59,140,247,.14);background:#fff;
}
.field.full{grid-column:1/-1}
.sub-form .btn{grid-column:1/-1;justify-self:start;margin-top:4px}
.form-hint{grid-column:1/-1;font-size:13px;color:var(--ink-300);line-height:1.8}

/* ============ 页脚 ============ */
.site-footer{background:#0c1c3c;color:#a9bcdd;padding:56px 0 26px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:38px}
.footer-logo{font-size:18px;font-weight:700;color:#fff;letter-spacing:.2px}
.site-footer p{margin-top:14px;font-size:14.5px;line-height:1.9;color:#a9bcdd;max-width:440px}
.footer-col h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:12px}
.footer-col a{display:block;padding:5px 0;font-size:14.5px;color:#a9bcdd;transition:color .2s ease,transform .2s ease}
.footer-col a:hover{color:#fff;transform:translateX(3px)}
.footer-bottom{
 display:flex;justify-content:space-between;align-items:center;gap:14px;flex-wrap:wrap;
 margin-top:36px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
 font-size:13.5px;color:#8397b8;
}

/* ============ 响应式 ============ */
@media (max-width:1024px){
 .hero-grid{grid-template-columns:1fr;gap:34px;padding:42px 32px 38px}
 .metric-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
 .matrix-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
 .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
 .timeline{grid-template-columns:repeat(2,minmax(0,1fr));row-gap:28px}
 .tl-item::after{display:none}
 .sub-panel{grid-template-columns:1fr;padding:34px 30px;gap:28px}
 .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:28px}
}
@media (max-width:768px){
 .header-top{flex-wrap:wrap;gap:12px}
 .search-box{order:3;flex:1 1 100%;max-width:100%}
 .header-cta{order:2;margin-left:auto}
 .section{padding:52px 0}
 .grid-2,.grid-3,.grid-4,.matrix-grid,.quick-grid{grid-template-columns:1fr}
 .metric-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
 .news-item{grid-template-columns:1fr;gap:10px}
 .news-date{padding-top:0}
 .news-side{flex-direction:row;align-items:center;flex-wrap:wrap}
 .compare-head{display:none}
 .compare-row{grid-template-columns:1fr;gap:8px;padding:16px 20px}
 .compare-key{font-size:15px}
 .footer-grid{grid-template-columns:1fr;gap:26px}
 .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
 .hero-actions{gap:10px}
 .btn{padding:11px 20px;font-size:14.5px}
}
@media (max-width:520px){
 .container-x{padding:0 16px}
 .hero-section{padding:26px 0 18px}
 .hero-grid{padding:32px 22px}
 .hero-dark{border-radius:20px}
 .section{padding:42px 0}
 .metric-grid{grid-template-columns:1fr}
 .timeline{grid-template-columns:1fr}
 .sub-panel{padding:26px 22px;border-radius:18px}
 .sub-form{grid-template-columns:1fr}
 .sub-form .btn{justify-self:stretch}
 .brand-text span{display:none}
}