/* roulang page: index */
:root{
  --c-bg:#f5f7fb;
  --c-surface:#ffffff;
  --c-dark:#0b1020;
  --c-dark-2:#121a30;
  --c-primary:#1d3fd6;
  --c-primary-dark:#132c9e;
  --c-primary-soft:#e8edff;
  --c-accent:#ff9d2f;
  --c-accent-soft:#fff2e0;
  --c-text:#151a28;
  --c-text-2:#4a5268;
  --c-text-3:#7b8499;
  --c-border:#e3e7f1;
  --c-border-2:#cdd4e6;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:20px;
  --r-xl:28px;
  --sh-sm:0 2px 8px rgba(18,26,48,.06);
  --sh-md:0 10px 28px rgba(18,26,48,.08);
  --sh-lg:0 24px 60px rgba(18,26,48,.14);
  --sp-1:6px;
  --sp-2:12px;
  --sp-3:18px;
  --sp-4:26px;
  --sp-5:40px;
  --sp-6:64px;
  --nav-w:236px;
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;font-family:var(--font);background:var(--c-bg);color:var(--c-text);
  font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid rgba(29,63,214,.45);outline-offset:2px;border-radius:6px}

/* ===== 布局骨架：左侧竖向导航 ===== */
.layout{display:flex;min-height:100vh}
.sidebar{
  width:var(--nav-w);flex:0 0 var(--nav-w);
  background:linear-gradient(180deg,#0b1020 0%,#131c38 100%);
  color:#e8ecfa;position:sticky;top:0;height:100vh;overflow-y:auto;
  padding:26px 18px 30px;display:flex;flex-direction:column;gap:22px;
  border-right:1px solid rgba(255,255,255,.06);
}
.brand{display:flex;align-items:center;gap:10px}
.brand-mark{
  width:40px;height:40px;border-radius:12px;flex:0 0 40px;
  background:linear-gradient(135deg,var(--c-primary) 0%,#4a6bff 100%);
  display:grid;place-items:center;font-weight:800;font-size:18px;color:#fff;
  box-shadow:0 8px 20px rgba(29,63,214,.45);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-name{font-weight:800;font-size:16px;letter-spacing:.5px}
.brand-sub{font-size:11px;color:#8f9bc4;letter-spacing:1.4px}
.side-nav{display:flex;flex-direction:column;gap:4px}
.side-nav-title{font-size:11px;letter-spacing:1.6px;color:#6d78a3;padding:0 10px 6px}
.side-nav a{
  display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:10px;
  font-size:14px;color:#c3cbe8;transition:background .2s,color .2s,transform .2s;
}
.side-nav a:hover{background:rgba(255,255,255,.07);color:#fff;transform:translateX(2px)}
.side-nav a.active{
  background:linear-gradient(90deg,rgba(29,63,214,.9),rgba(74,107,255,.55));
  color:#fff;font-weight:600;box-shadow:0 8px 20px rgba(29,63,214,.35);
}
.dot{width:7px;height:7px;border-radius:50%;background:#4a6bff;flex:0 0 7px}
.side-nav a.active .dot{background:#fff}
.side-cta{
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);
  border-radius:var(--r-md);padding:16px;
}
.side-cta h4{font-size:13px;font-weight:700;color:#fff;margin-bottom:6px}
.side-cta p{font-size:12px;color:#93a0c8;line-height:1.6;margin-bottom:12px}
.side-cta .btn{width:100%;justify-content:center}
.side-foot{margin-top:auto;font-size:11px;color:#6d78a3;line-height:1.7}

/* ===== 主内容区 ===== */
.main{flex:1;min-width:0;display:flex;flex-direction:column}
.container{width:100%;max-width:1160px;margin:0 auto;padding:0 30px}
.topbar{
  position:sticky;top:0;z-index:50;background:rgba(245,247,251,.88);
  backdrop-filter:blur(14px);border-bottom:1px solid var(--c-border);
}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;height:64px}
.topbar-crumb{font-size:13px;color:var(--c-text-3)}
.topbar-crumb strong{color:var(--c-text)}
.topbar-actions{display:flex;align-items:center;gap:10px}
.search-box{
  display:flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--c-border);
  border-radius:999px;padding:7px 14px;min-width:220px;box-shadow:var(--sh-sm);
  transition:border-color .2s,box-shadow .2s;
}
.search-box:focus-within{border-color:var(--c-primary);box-shadow:0 0 0 4px rgba(29,63,214,.12)}
.search-box input{border:none;outline:none;background:transparent;width:100%;font-size:13px}
.search-box svg{flex:0 0 16px;opacity:.5}

/* ===== 按钮 / 标签 ===== */
.btn{
  display:inline-flex;align-items:center;gap:8px;justify-content:center;
  padding:11px 22px;border-radius:999px;font-size:14px;font-weight:600;
  border:1px solid transparent;cursor:pointer;transition:transform .18s,box-shadow .18s,background .18s,color .18s;
  white-space:nowrap;
}
.btn-primary{background:linear-gradient(135deg,var(--c-primary),#3d5cff);color:#fff;box-shadow:0 10px 24px rgba(29,63,214,.32)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 32px rgba(29,63,214,.4)}
.btn-ghost{background:#fff;color:var(--c-primary);border-color:var(--c-border-2)}
.btn-ghost:hover{border-color:var(--c-primary);background:var(--c-primary-soft)}
.btn-accent{background:linear-gradient(135deg,#ff9d2f,#ff7a18);color:#241300;box-shadow:0 10px 24px rgba(255,157,47,.36)}
.btn-accent:hover{transform:translateY(-2px)}
.btn-sm{padding:8px 16px;font-size:13px}
.tag{
  display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;
  font-size:12px;font-weight:600;background:var(--c-primary-soft);color:var(--c-primary-dark);
}
.tag-accent{background:var(--c-accent-soft);color:#9a5400}
.tag-dark{background:rgba(255,255,255,.12);color:#fff}
.badge-hot{
  display:inline-flex;align-items:center;gap:8px;padding:7px 16px;border-radius:999px;
  background:linear-gradient(135deg,#ff9d2f,#ff6b18);color:#231400;font-size:13px;font-weight:800;
  box-shadow:0 8px 22px rgba(255,107,24,.4);
}
.badge-live{
  display:inline-flex;align-items:center;gap:7px;padding:6px 14px;border-radius:999px;
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);color:#fff;font-size:12px;font-weight:600;
}
.badge-live i{width:8px;height:8px;border-radius:50%;background:#42e08a;display:inline-block;box-shadow:0 0 0 4px rgba(66,224,138,.2)}

/* ===== Hero：沉浸暗底海报 ===== */
.hero{
  position:relative;background:radial-gradient(1200px 520px at 78% -10%,#22336e 0%,transparent 60%),
             linear-gradient(160deg,#080c1a 0%,#101830 55%,#0b1226 100%);
  color:#fff;overflow:hidden;border-radius:0 0 var(--r-xl) var(--r-xl);
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(700px 340px at 12% 110%,rgba(29,63,214,.38),transparent 65%);
}
.hero-inner{position:relative;z-index:2;padding:56px 0 60px;display:grid;grid-template-columns:1.15fr .85fr;gap:46px;align-items:center}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:20px}
.hero h1{font-size:40px;line-height:1.28;font-weight:800;letter-spacing:-.5px;margin-bottom:18px}
.hero h1 em{font-style:normal;color:var(--c-accent)}
.hero-lead{font-size:16px;color:#b9c3e0;max-width:590px;margin-bottom:26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:30px}
.hero-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;max-width:560px}
.hero-stat{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.1);
  border-radius:var(--r-md);padding:14px 16px;backdrop-filter:blur(6px);
}
.hero-stat b{display:block;font-size:24px;font-weight:800;color:#fff;line-height:1.2}
.hero-stat b span{font-size:14px;color:var(--c-accent);margin-left:2px}
.hero-stat small{font-size:12px;color:#93a0c8}

/* 海报卡 */
.poster-stage{position:relative}
.poster-main{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid rgba(255,255,255,.14);box-shadow:0 30px 70px rgba(0,0,0,.5);
  background:linear-gradient(150deg,#1c2952,#3b1e4d 60%,#5b2340);
  aspect-ratio:4/5;display:flex;flex-direction:column;justify-content:flex-end;
  padding:22px;
}
.poster-main::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(420px 260px at 70% 20%,rgba(255,157,47,.32),transparent 65%);
}
.poster-main>*{position:relative;z-index:2}
.poster-kicker{font-size:12px;letter-spacing:2px;color:#ffcf9b;margin-bottom:8px}
.poster-title{font-size:22px;font-weight:800;line-height:1.35;margin-bottom:10px}
.poster-meta{display:flex;flex-wrap:wrap;gap:8px;font-size:12px;color:#cdd6f2}
.poster-meta span{background:rgba(255,255,255,.12);padding:4px 10px;border-radius:999px}
.poster-float{
  position:absolute;left:-18px;bottom:34px;background:#fff;color:var(--c-text);
  border-radius:var(--r-md);padding:12px 16px;box-shadow:var(--sh-lg);min-width:170px;
}
.poster-float b{display:block;font-size:18px;color:var(--c-primary)}
.poster-float small{font-size:11px;color:var(--c-text-3)}
.poster-pill{
  position:absolute;right:-12px;top:24px;background:rgba(11,16,32,.82);
  border:1px solid rgba(255,255,255,.16);border-radius:999px;padding:8px 16px;
  font-size:12px;color:#fff;font-weight:600;backdrop-filter:blur(8px);
}

/* ===== 通用板块 ===== */
.section{padding:58px 0}
.section-alt{background:#fff;border-top:1px solid var(--c-border);border-bottom:1px solid var(--c-border)}
.section-dark{background:linear-gradient(160deg,#0b1020,#141d3a);color:#fff}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:22px;margin-bottom:30px;flex-wrap:wrap}
.section-head h2{font-size:27px;font-weight:800;letter-spacing:-.3px;line-height:1.35}
.section-head p{color:var(--c-text-2);font-size:14.5px;max-width:640px;margin-top:8px}
.section-dark .section-head p{color:#a9b4d6}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:700;letter-spacing:1.6px;color:var(--c-primary);margin-bottom:10px;text-transform:uppercase}
.section-dark .eyebrow{color:var(--c-accent)}

/* 网格 */
.grid{display:grid;gap:20px}
.g-2{grid-template-columns:repeat(2,1fr)}
.g-3{grid-template-columns:repeat(3,1fr)}
.g-4{grid-template-columns:repeat(4,1fr)}
.g-6{grid-template-columns:repeat(6,1fr)}

/* 卡片 */
.card{
  background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-lg);
  padding:24px;box-shadow:var(--sh-sm);transition:transform .22s,box-shadow .22s,border-color .22s;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-md);border-color:var(--c-border-2)}
.card h3{font-size:17px;font-weight:700;margin-bottom:10px}
.card p{font-size:14px;color:var(--c-text-2);line-height:1.75}
.card-icon{
  width:44px;height:44px;border-radius:12px;display:grid;place-items:center;margin-bottom:14px;
  background:var(--c-primary-soft);color:var(--c-primary);font-size:20px;font-weight:800;
}
.card-num{
  font-size:13px;font-weight:800;color:var(--c-primary);letter-spacing:1px;margin-bottom:10px;display:block;
}

/* 功能亮点（深色区内的卡） */
.feature-card{
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);border-radius:var(--r-lg);
  padding:24px;transition:background .22s,transform .22s,border-color .22s;
}
.feature-card:hover{background:rgba(255,255,255,.09);transform:translateY(-4px);border-color:rgba(255,255,255,.22)}
.feature-card h3{font-size:17px;font-weight:700;margin-bottom:10px;color:#fff}
.feature-card p{font-size:14px;color:#a9b4d6;line-height:1.75}
.feature-idx{font-size:26px;font-weight:900;color:var(--c-accent);opacity:.9;margin-bottom:12px;display:block;letter-spacing:-1px}

/* 场景矩阵 */
.scene{
  position:relative;background:#fff;border:1px solid var(--c-border);border-radius:var(--r-lg);
  padding:22px 22px 22px 26px;overflow:hidden;transition:box-shadow .22s,transform .22s;
}
.scene::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:4px;
  background:linear-gradient(180deg,var(--c-primary),#6f8bff);
}
.scene:hover{transform:translateY(-4px);box-shadow:var(--sh-md)}
.scene h3{font-size:16px;font-weight:700;margin-bottom:8px}
.scene p{font-size:13.5px;color:var(--c-text-2);line-height:1.72}
.scene-tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:14px}

/* 流程步骤 */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;position:relative}
.step{position:relative;padding:0 22px 0 0}
.step::before{
  content:"";position:absolute;left:38px;right:-18px;top:19px;height:2px;
  background:linear-gradient(90deg,var(--c-border-2),rgba(205,212,230,.2));
}
.step:last-child::before{display:none}
.step-dot{
  width:40px;height:40px;border-radius:50%;background:#fff;border:2px solid var(--c-primary);
  color:var(--c-primary);display:grid;place-items:center;font-weight:800;font-size:15px;
  position:relative;z-index:2;margin-bottom:16px;box-shadow:0 6px 16px rgba(29,63,214,.18);
}
.step h3{font-size:16px;font-weight:700;margin-bottom:8px}
.step p{font-size:13.5px;color:var(--c-text-2);line-height:1.72}

/* 截图 / 演示舞台 */
.stage{
  background:linear-gradient(150deg,#0d1428,#1a2547);border-radius:var(--r-xl);
  padding:26px;display:grid;grid-template-columns:1fr 1fr;gap:22px;color:#fff;
}
.stage-frame{
  border-radius:var(--r-lg);overflow:hidden;border:1px solid rgba(255,255,255,.14);
  background:rgba(255,255,255,.04);
}
.frame-bar{display:flex;align-items:center;gap:6px;padding:10px 14px;background:rgba(255,255,255,.07);border-bottom:1px solid rgba(255,255,255,.1)}
.frame-bar i{width:9px;height:9px;border-radius:50%;background:rgba(255,255,255,.25);display:inline-block}
.frame-bar span{margin-left:8px;font-size:11px;color:#93a0c8}
.frame-body{padding:18px;display:flex;flex-direction:column;gap:12px}
.frame-row{
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.08);
  border-radius:10px;padding:12px 14px;display:flex;align-items:center;justify-content:space-between;gap:12px;
}
.frame-row strong{font-size:13px;font-weight:600;color:#e8ecfa}
.frame-row em{font-style:normal;font-size:12px;color:var(--c-accent)}
.mini-bar{height:7px;border-radius:999px;background:rgba(255,255,255,.12);overflow:hidden;margin-top:8px}
.mini-bar i{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--c-primary),#6f8bff)}

/* 评分 / 评价 */
.rating-summary{
  display:grid;grid-template-columns:auto 1fr;gap:26px;align-items:center;
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-lg);
  padding:26px;box-shadow:var(--sh-sm);
}
.rating-score{text-align:center;padding-right:26px;border-right:1px solid var(--c-border)}
.rating-score b{font-size:52px;font-weight:900;color:var(--c-primary);line-height:1;display:block}
.rating-score small{font-size:12px;color:var(--c-text-3)}
.stars{color:var(--c-accent);letter-spacing:3px;font-size:16px;margin:8px 0 4px}
.rating-bars{display:flex;flex-direction:column;gap:9px}
.rating-bar{display:grid;grid-template-columns:56px 1fr 42px;align-items:center;gap:12px;font-size:12.5px;color:var(--c-text-2)}
.rating-bar .bar{height:8px;border-radius:999px;background:var(--c-primary-soft);overflow:hidden}
.rating-bar .bar i{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--c-primary),#6f8bff)}
.quote{
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-lg);padding:22px;
  display:flex;flex-direction:column;gap:12px;box-shadow:var(--sh-sm);transition:transform .22s,box-shadow .22s;
}
.quote:hover{transform:translateY(-3px);box-shadow:var(--sh-md)}
.quote p{font-size:14px;color:var(--c-text-2);line-height:1.75}
.quote-user{display:flex;align-items:center;gap:12px;margin-top:auto;padding-top:12px;border-top:1px solid var(--c-border)}
.avatar{
  width:38px;height:38px;border-radius:50%;flex:0 0 38px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--c-primary),#6f8bff);color:#fff;font-weight:700;font-size:14px;
}
.quote-user b{font-size:13.5px;display:block}
.quote-user small{font-size:11.5px;color:var(--c-text-3)}

/* 套餐对比 */
.plan{
  background:#fff;border:2px solid var(--c-border);border-radius:var(--r-lg);padding:26px;
  display:flex;flex-direction:column;gap:16px;position:relative;transition:transform .22s,box-shadow .22s,border-color .22s;
}
.plan:hover{transform:translateY(-4px);box-shadow:var(--sh-md)}
.plan-hot{border-color:var(--c-primary);box-shadow:0 20px 46px rgba(29,63,214,.16)}
.plan-flag{
  position:absolute;top:-13px;left:26px;background:linear-gradient(135deg,var(--c-primary),#4a6bff);
  color:#fff;font-size:11.5px;font-weight:700;padding:5px 14px;border-radius:999px;letter-spacing:.5px;
}
.plan h3{font-size:18px;font-weight:800}
.plan-price{display:flex;align-items:baseline;gap:6px}
.plan-price b{font-size:32px;font-weight:900;color:var(--c-primary)}
.plan-price small{font-size:13px;color:var(--c-text-3)}
.plan-list{display:flex;flex-direction:column;gap:10px;font-size:13.5px;color:var(--c-text-2)}
.plan-list li{display:flex;gap:9px;align-items:flex-start;line-height:1.7}
.plan-list li::before{content:"✓";color:var(--c-primary);font-weight:800;flex:0 0 auto}
.plan .btn{margin-top:auto}

/* 资讯列表 */
.news-item{
  display:grid;grid-template-columns:88px 1fr auto;gap:20px;align-items:center;
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-md);
  padding:18px 22px;transition:transform .2s,box-shadow .2s,border-color .2s;
}
.news-item:hover{transform:translateX(4px);box-shadow:var(--sh-sm);border-color:var(--c-border-2)}
.news-date{
  background:var(--c-primary-soft);color:var(--c-primary-dark);border-radius:var(--r-sm);
  text-align:center;padding:10px 6px;font-weight:800;font-size:15px;line-height:1.2;
}
.news-date small{display:block;font-size:11px;font-weight:600;opacity:.75}
.news-item h3{font-size:15.5px;font-weight:700;margin-bottom:5px}
.news-item p{font-size:13px;color:var(--c-text-3);line-height:1.6}

/* 下载引导 */
.download-panel{
  display:grid;grid-template-columns:1.2fr .8fr;gap:36px;align-items:center;
  background:linear-gradient(135deg,#0b1020,#1b2750);color:#fff;border-radius:var(--r-xl);
  padding:42px;position:relative;overflow:hidden;
}
.download-panel::after{
  content:"";position:absolute;right:-60px;bottom:-80px;width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle,rgba(29,63,214,.5),transparent 65%);
}
.download-panel h2{font-size:28px;font-weight:800;margin-bottom:14px;line-height:1.35}
.download-panel p{color:#a9b4d6;font-size:14.5px;margin-bottom:24px}
.dl-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;position:relative;z-index:2}
.dl-btn{
  display:flex;align-items:center;gap:12px;background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.14);border-radius:var(--r-md);padding:14px 16px;
  transition:background .2s,transform .2s;
}
.dl-btn:hover{background:rgba(255,255,255,.15);transform:translateY(-2px)}
.dl-btn b{font-size:14px;display:block}
.dl-btn small{font-size:11.5px;color:#93a0c8}

/* 保障条 */
.guarantee{
  display:grid;grid-template-columns:repeat(4,1fr);gap:20px;
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-lg);padding:26px;box-shadow:var(--sh-sm);
}
.guarantee div{text-align:center}
.guarantee b{display:block;font-size:15px;font-weight:700;margin-bottom:6px}
.guarantee p{font-size:12.5px;color:var(--c-text-3);line-height:1.65}
.guarantee .ico{font-size:22px;margin-bottom:10px;color:var(--c-primary)}

/* 数据指标条 */
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border:1px solid var(--c-border);border-radius:var(--r-lg);overflow:hidden;background:#fff}
.metric{padding:26px 22px;border-right:1px solid var(--c-border)}
.metric:last-child{border-right:none}
.metric b{display:block;font-size:30px;font-weight:900;color:var(--c-primary);line-height:1.1;letter-spacing:-.5px}
.metric b span{font-size:15px;color:var(--c-accent);margin-left:2px}
.metric small{font-size:12.5px;color:var(--c-text-3);display:block;margin-top:6px}

/* 交互表单 */
.self-check{background:#fff;border:1px solid var(--c-border);border-radius:var(--r-lg);padding:28px;box-shadow:var(--sh-sm)}
.check-row{display:flex;flex-wrap:wrap;gap:10px;margin:16px 0}
.chip{
  padding:9px 18px;border-radius:999px;border:1px solid var(--c-border-2);background:#fff;
  font-size:13.5px;cursor:pointer;transition:all .2s;color:var(--c-text-2);
}
.chip:hover{border-color:var(--c-primary);color:var(--c-primary)}
.chip.on{background:var(--c-primary);border-color:var(--c-primary);color:#fff;font-weight:600}
.check-result{
  margin-top:18px;padding:16px 20px;border-radius:var(--r-md);background:var(--c-primary-soft);
  color:var(--c-primary-dark);font-size:14px;line-height:1.7;
}

/* 分类入口墙 */
.channel{
  display:block;position:relative;border-radius:var(--r-lg);overflow:hidden;padding:26px;
  background:#fff;border:1px solid var(--c-border);transition:transform .22s,box-shadow .22s;
}
.channel:hover{transform:translateY(-5px);box-shadow:var(--sh-md)}
.channel b{font-size:17px;font-weight:800;display:block;margin-bottom:8px}
.channel p{font-size:13.5px;color:var(--c-text-2);line-height:1.7;margin-bottom:14px}
.channel .more{font-size:13px;font-weight:700;color:var(--c-primary);display:inline-flex;align-items:center;gap:6px}

/* 时间线 */
.timeline{position:relative;padding-left:30px}
.timeline::before{content:"";position:absolute;left:9px;top:6px;bottom:6px;width:2px;background:linear-gradient(180deg,var(--c-primary),rgba(29,63,214,.12))}
.tl-item{position:relative;padding-bottom:24px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{
  content:"";position:absolute;left:-27px;top:7px;width:12px;height:12px;border-radius:50%;
  background:#fff;border:3px solid var(--c-primary);box-shadow:0 0 0 4px rgba(29,63,214,.1);
}
.tl-item b{font-size:15px;font-weight:700;display:block;margin-bottom:5px}
.tl-item p{font-size:13.5px;color:var(--c-text-2);line-height:1.72}
.tl-item span{font-size:12px;color:var(--c-primary);font-weight:700}

/* 页脚 */
.footer{background:#0b1020;color:#8f9bc4;margin-top:auto;padding:48px 0 26px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;padding-bottom:32px;border-bottom:1px solid rgba(255,255,255,.08)}
.footer h4{font-size:14px;color:#fff;font-weight:700;margin-bottom:14px}
.footer p{font-size:13px;line-height:1.8}
.footer-links{display:flex;flex-direction:column;gap:9px}
.footer-links a{font-size:13px;color:#8f9bc4;transition:color .2s,transform .2s}
.footer-links a:hover{color:#fff;transform:translateX(3px)}
.footer-bottom{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;padding-top:22px;font-size:12px}
.footer-note{font-size:12px;color:#5f6a90;line-height:1.8;margin-top:16px}

/* 移动端顶部导航 */
.mobile-nav{
  display:none;position:sticky;top:0;z-index:80;background:#0b1020;color:#fff;
  padding:12px 18px;align-items:center;justify-content:space-between;gap:12px;
}
.mobile-nav .brand-name{font-size:15px}
.menu-toggle{
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.16);color:#fff;
  border-radius:10px;padding:8px 12px;font-size:13px;cursor:pointer;
}
.mobile-menu{
  display:none;background:#0b1020;padding:10px 18px 18px;flex-direction:column;gap:6px;
  border-bottom:1px solid rgba(255,255,255,.08);
}
.mobile-menu.open{display:flex}
.mobile-menu a{padding:10px 12px;border-radius:10px;color:#c3cbe8;font-size:14px}
.mobile-menu a.active{background:rgba(29,63,214,.35);color:#fff;font-weight:600}

@media (max-width:1080px){
  .hero-inner{grid-template-columns:1fr;gap:34px}
  .g-4{grid-template-columns:repeat(2,1fr)}
  .g-6{grid-template-columns:repeat(3,1fr)}
  .steps{grid-template-columns:repeat(2,1fr);gap:26px}
  .step::before{display:none}
  .stage{grid-template-columns:1fr}
  .download-panel{grid-template-columns:1fr;padding:34px}
  .footer-grid{grid-template-columns:1fr 1fr}
  .guarantee{grid-template-columns:repeat(2,1fr)}
  .metrics{grid-template-columns:repeat(2,1fr)}
  .metric:nth-child(2){border-right:none}
  .metric:nth-child(1),.metric:nth-child(2){border-bottom:1px solid var(--c-border)}
}
@media (max-width:768px){
  .layout{display:block}
  .sidebar{display:none}
  .mobile-nav{display:flex}
  .topbar-inner{height:auto;padding:12px 0;flex-wrap:wrap;gap:10px}
  .search-box{min-width:0;width:100%}
  .container{padding:0 18px}
  .hero-inner{padding:38px 0 44px}
  .hero h1{font-size:29px}
  .hero-stats{grid-template-columns:1fr 1fr}
  .g-2,.g-3,.g-4,.g-6{grid-template-columns:1fr}
  .section{padding:40px 0}
  .section-head h2{font-size:22px}
  .steps{grid-template-columns:1fr}
  .news-item{grid-template-columns:1fr;gap:12px}
  .rating-summary{grid-template-columns:1fr}
  .rating-score{border-right:none;border-bottom:1px solid var(--c-border);padding:0 0 18px}
  .footer-grid{grid-template-columns:1fr}
  .poster-float{left:8px;bottom:12px}
  .poster-pill{right:8px}
  .metrics{grid-template-columns:1fr}
  .metric{border-right:none;border-bottom:1px solid var(--c-border)}
  .guarantee{grid-template-columns:1fr}
  .dl-grid{grid-template-columns:1fr}
}
@media (max-width:520px){
  .hero h1{font-size:25px}
  .hero-stats{grid-template-columns:1fr}
  .section{padding:32px 0}
  .card,.feature-card,.plan{padding:20px}
  .download-panel{padding:24px}
}

/* roulang page: category1 */
:root{
 --c-bg:#f5f7fb;
 --c-surface:#ffffff;
 --c-dark:#0b1020;
 --c-dark-2:#121a30;
 --c-primary:#1d3fd6;
 --c-primary-dark:#132c9e;
 --c-primary-soft:#e8edff;
 --c-accent:#ff9d2f;
 --c-accent-soft:#fff2e0;
 --c-text:#151a28;
 --c-text-2:#4a5268;
 --c-text-3:#7b8499;
 --c-border:#e3e7f1;
 --c-border-2:#cdd4e6;
 --r-sm:8px;
 --r-md:14px;
 --r-lg:20px;
 --r-xl:28px;
 --sh-sm:0 2px 8px rgba(18,26,48,.06);
 --sh-md:0 10px 28px rgba(18,26,48,.08);
 --sh-lg:0 24px 60px rgba(18,26,48,.14);
 --sp-1:6px;
 --sp-2:12px;
 --sp-3:18px;
 --sp-4:26px;
 --sp-5:40px;
 --sp-6:64px;
 --nav-w:236px;
 --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
 margin:0;font-family:var(--font);background:var(--c-bg);color:var(--c-text);
 font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4,p,ul,figure{margin:0}
ul{padding:0;list-style:none}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{
 outline:3px solid rgba(29,63,214,.45);outline-offset:2px;border-radius:8px;
}

/* ===== 整体布局 ===== */
.layout{display:flex;min-height:100vh}
.sidebar{
 width:var(--nav-w);flex:0 0 var(--nav-w);
 background:linear-gradient(180deg,#0b1020 0%,#111a33 100%);
 color:#c3cbe8;padding:26px 18px;display:flex;flex-direction:column;gap:26px;
 position:sticky;top:0;height:100vh;overflow-y:auto;
}
.sidebar::-webkit-scrollbar{width:6px}
.sidebar::-webkit-scrollbar-thumb{background:rgba(255,255,255,.14);border-radius:99px}
.main{flex:1;min-width:0;display:flex;flex-direction:column}
.container{width:100%;max-width:1160px;margin:0 auto;padding:0 30px}

/* ===== 品牌 ===== */
.brand{display:flex;align-items:center;gap:10px}
.brand-mark{
 width:40px;height:40px;border-radius:12px;flex:0 0 40px;
 background:linear-gradient(135deg,var(--c-primary) 0%,#4a6bff 100%);
 display:grid;place-items:center;font-weight:800;font-size:18px;color:#fff;
 box-shadow:0 8px 20px rgba(29,63,214,.45);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-name{font-weight:800;font-size:16px;letter-spacing:.5px}
.brand-sub{font-size:11px;color:#8f9bc4;letter-spacing:1.4px}

/* ===== 侧边导航 ===== */
.side-nav{display:flex;flex-direction:column;gap:4px}
.side-nav-title{font-size:11px;letter-spacing:1.6px;color:#6d78a3;padding:0 10px 6px}
.side-nav a{
 display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:10px;
 font-size:14px;color:#c3cbe8;transition:background .2s,color .2s,transform .2s;
}
.side-nav a .dot{
 width:6px;height:6px;border-radius:50%;background:#4b5680;flex:0 0 6px;transition:background .2s;
}
.side-nav a:hover{background:rgba(255,255,255,.07);color:#fff;transform:translateX(2px)}
.side-nav a.active{
 background:linear-gradient(90deg,rgba(29,63,214,.9),rgba(74,107,255,.55));
 color:#fff;font-weight:600;box-shadow:0 8px 20px rgba(29,63,214,.35);
}
.side-nav a.active .dot{background:#fff}
.side-cta{
 background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);
 border-radius:var(--r-md);padding:16px;margin-top:auto;
}
.side-cta h4{font-size:13px;font-weight:700;color:#fff;margin-bottom:6px}
.side-cta p{font-size:12px;color:#93a0c8;line-height:1.6;margin-bottom:12px}
.side-cta .btn{width:100%;justify-content:center}

/* ===== 顶部信息条 ===== */
.topbar{
 position:sticky;top:0;z-index:50;background:rgba(245,247,251,.9);
 backdrop-filter:blur(14px);border-bottom:1px solid var(--c-border);
}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;height:64px}
.topbar-crumb{font-size:13px;color:var(--c-text-3);display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.topbar-crumb strong{color:var(--c-text);font-weight:700}
.topbar-crumb .sep{color:var(--c-border-2)}
.topbar-actions{display:flex;align-items:center;gap:10px}
.search-box{
 display:flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--c-border);
 border-radius:999px;padding:7px 14px;min-width:220px;box-shadow:var(--sh-sm);
 transition:border-color .2s,box-shadow .2s;
}
.search-box:focus-within{border-color:var(--c-primary);box-shadow:0 0 0 4px rgba(29,63,214,.12)}
.search-box input{border:none;outline:none;background:transparent;width:100%;font-size:13px}
.search-box svg{flex:0 0 16px;opacity:.5}

/* ===== 按钮 / 标签 / 徽章 ===== */
.btn{
 display:inline-flex;align-items:center;gap:8px;justify-content:center;
 padding:11px 22px;border-radius:999px;font-size:14px;font-weight:600;
 border:1px solid transparent;cursor:pointer;
 transition:transform .18s,box-shadow .18s,background .18s,color .18s,border-color .18s;
 white-space:nowrap;
}
.btn-primary{background:linear-gradient(135deg,var(--c-primary),#3d5cff);color:#fff;box-shadow:0 10px 24px rgba(29,63,214,.32)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 32px rgba(29,63,214,.4)}
.btn-ghost{background:#fff;color:var(--c-primary);border-color:var(--c-border-2)}
.btn-ghost:hover{border-color:var(--c-primary);background:var(--c-primary-soft)}
.btn-accent{background:linear-gradient(135deg,#ff9d2f,#ff7a18);color:#241300;box-shadow:0 10px 24px rgba(255,157,47,.36)}
.btn-accent:hover{transform:translateY(-2px);box-shadow:0 16px 32px rgba(255,157,47,.45)}
.btn-sm{padding:8px 16px;font-size:13px}
.btn-block{width:100%}
.tag{
 display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;
 font-size:12px;font-weight:600;background:var(--c-primary-soft);color:var(--c-primary-dark);
}
.tag-accent{background:var(--c-accent-soft);color:#9a5400}
.tag-plain{background:#f0f2f8;color:var(--c-text-2)}
.tag-dark{background:rgba(255,255,255,.12);color:#fff}
.badge-hot{
 display:inline-flex;align-items:center;gap:8px;padding:7px 16px;border-radius:999px;
 background:linear-gradient(135deg,#ff9d2f,#ff6b18);color:#231400;font-size:13px;font-weight:800;
 box-shadow:0 8px 22px rgba(255,107,24,.4);
}
.badge-live{
 display:inline-flex;align-items:center;gap:7px;padding:6px 14px;border-radius:999px;
 background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);color:#fff;font-size:12px;font-weight:600;
}
.badge-live i{width:8px;height:8px;border-radius:50%;background:#42e08a;display:inline-block;box-shadow:0 0 0 4px rgba(66,224,138,.2)}

/* ===== Hero：档位对比选型 ===== */
.hero{
 position:relative;background:
 radial-gradient(1200px 520px at 78% -10%,#22336e 0%,transparent 60%),
 linear-gradient(160deg,#080c1a 0%,#101830 55%,#0b1226 100%);
 color:#fff;overflow:hidden;border-radius:0 0 var(--r-xl) var(--r-xl);
}
.hero::after{
 content:"";position:absolute;inset:0;pointer-events:none;
 background:radial-gradient(700px 340px at 10% 112%,rgba(29,63,214,.38),transparent 65%);
}
.hero-inner{position:relative;z-index:2;padding:52px 0 58px;display:grid;grid-template-columns:1.08fr .92fr;gap:44px;align-items:start}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:18px}
.hero h1{font-size:38px;line-height:1.3;font-weight:800;letter-spacing:-.5px}
.hero h1 em{font-style:normal;color:#ffb865}
.hero-lead{margin-top:16px;font-size:15.5px;color:#b9c4e4;max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-points{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:28px}
.hero-points li{
 display:flex;gap:9px;align-items:flex-start;font-size:13.5px;color:#cdd6f2;
 background:rgba(255,255,255,.045);border:1px solid rgba(255,255,255,.08);
 border-radius:var(--r-md);padding:11px 14px;
}
.hero-points li::before{
 content:"";flex:0 0 7px;width:7px;height:7px;margin-top:8px;border-radius:50%;
 background:linear-gradient(135deg,#5f83ff,#ffb865);
}
/* 选型面板 */
.pick-panel{
 background:rgba(255,255,255,.055);border:1px solid rgba(255,255,255,.12);
 border-radius:var(--r-xl);padding:22px;backdrop-filter:blur(8px);box-shadow:var(--sh-lg);
}
.pick-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:18px}
.pick-head strong{font-size:15px;color:#fff;font-weight:700}
.pick-best{
 position:relative;border-radius:var(--r-lg);padding:18px;margin-bottom:16px;
 background:linear-gradient(140deg,rgba(29,63,214,.92),rgba(74,107,255,.7));
 border:1px solid rgba(255,255,255,.28);box-shadow:0 18px 40px rgba(29,63,214,.4);
}
.pick-best .pick-flag{
 position:absolute;top:-11px;right:16px;background:linear-gradient(135deg,#ff9d2f,#ff7a18);
 color:#241300;font-size:11px;font-weight:800;letter-spacing:.6px;padding:4px 12px;border-radius:999px;
}
.pick-best h3{font-size:19px;font-weight:800;color:#fff;line-height:1.4}
.pick-best p{font-size:13px;color:#dfe6ff;margin-top:6px}
.pick-best .pick-facts{display:flex;flex-wrap:wrap;gap:8px;margin:14px 0 16px}
.pick-best .pick-facts span{
 font-size:12px;font-weight:600;color:#fff;background:rgba(255,255,255,.16);
 border:1px solid rgba(255,255,255,.22);border-radius:999px;padding:4px 11px;
}
.pick-row{padding:12px 2px;border-bottom:1px dashed rgba(255,255,255,.13)}
.pick-row:last-child{border-bottom:none}
.pick-row-top{display:flex;align-items:baseline;justify-content:space-between;gap:10px}
.pick-row-top b{font-size:14px;font-weight:700;color:#e8edff}
.pick-row-top span{font-size:12px;color:#93a0c8}
.pick-row p{font-size:12.5px;color:#8695c2;margin-top:3px}
.pick-bar{height:6px;border-radius:99px;background:rgba(255,255,255,.11);margin-top:9px;overflow:hidden}
.pick-bar span{display:block;height:100%;border-radius:99px;background:linear-gradient(90deg,#5f83ff,#9fb4ff)}

/* ===== 通用板块 ===== */
.section{padding:58px 0}
.section-tight{padding:44px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:28px;flex-wrap:wrap}
.section-head .sec-tag{
 display:inline-flex;align-items:center;gap:7px;font-size:12px;font-weight:700;letter-spacing:1px;
 color:var(--c-primary-dark);background:var(--c-primary-soft);border-radius:999px;padding:5px 13px;margin-bottom:12px;
}
.section-head h2{font-size:26px;font-weight:800;letter-spacing:-.3px;line-height:1.4}
.section-head p{color:var(--c-text-2);font-size:14.5px;max-width:640px;margin-top:8px}
.section-head .head-side{font-size:13px;color:var(--c-text-3)}

/* ===== 指标条 ===== */
.metrics{
 display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;
 background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-lg);
 padding:24px;box-shadow:var(--sh-sm);
}
.metric{border-right:1px solid var(--c-border);padding-right:16px}
.metric:last-child{border-right:none;padding-right:0}
.metric .num{font-size:28px;font-weight:800;color:var(--c-primary);letter-spacing:-.5px;line-height:1.2}
.metric .num small{font-size:14px;font-weight:700;margin-left:2px}
.metric .lab{font-size:13px;color:var(--c-text-2);margin-top:4px}
.metric .sub{font-size:12px;color:var(--c-text-3);margin-top:2px}

/* ===== 卡片网格 ===== */
.card-grid{display:grid;gap:18px}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.card{
 background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-lg);
 padding:24px;box-shadow:var(--sh-sm);transition:transform .2s,box-shadow .2s,border-color .2s;
 display:flex;flex-direction:column;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-md);border-color:var(--c-border-2)}
.card .card-icon{
 width:44px;height:44px;border-radius:13px;display:grid;place-items:center;
 background:var(--c-primary-soft);color:var(--c-primary-dark);font-weight:800;font-size:17px;margin-bottom:14px;
}
.card .card-icon.accent{background:var(--c-accent-soft);color:#9a5400}
.card h3{font-size:17px;font-weight:700;line-height:1.5}
.card p{font-size:14px;color:var(--c-text-2);margin-top:9px}
.card .card-foot{margin-top:16px;display:flex;flex-wrap:wrap;gap:8px}

/* ===== 标签矩阵 ===== */
.tag-matrix{
 background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-lg);
 padding:26px;box-shadow:var(--sh-sm);
}
.tag-group{padding:16px 0;border-bottom:1px dashed var(--c-border)}
.tag-group:first-child{padding-top:0}
.tag-group:last-child{border-bottom:none;padding-bottom:0}
.tag-group h4{font-size:14px;font-weight:700;margin-bottom:11px;display:flex;align-items:center;gap:8px}
.tag-group h4 span{font-size:11px;font-weight:600;color:var(--c-text-3);background:#f0f2f8;border-radius:999px;padding:2px 9px}
.tag-list{display:flex;flex-wrap:wrap;gap:9px}
.chip{
 font-size:13px;color:var(--c-text-2);background:#f4f6fb;border:1px solid var(--c-border);
 border-radius:999px;padding:6px 14px;transition:background .2s,color .2s,border-color .2s,transform .2s;
}
.chip:hover{background:var(--c-primary-soft);color:var(--c-primary-dark);border-color:#c3cffb;transform:translateY(-1px)}
.chip.hot{background:var(--c-accent-soft);border-color:#ffd9ac;color:#9a5400;font-weight:700}

/* ===== 更新节奏时间线 ===== */
.timeline{
 background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-lg);
 padding:26px;box-shadow:var(--sh-sm);
}
.tl-item{display:grid;grid-template-columns:132px 1fr;gap:20px;padding:16px 0;border-bottom:1px dashed var(--c-border)}
.tl-item:last-child{border-bottom:none;padding-bottom:0}
.tl-item:first-child{padding-top:0}
.tl-when{font-size:13px;font-weight:700;color:var(--c-primary-dark);display:flex;align-items:center;gap:8px}
.tl-when i{width:9px;height:9px;border-radius:50%;background:var(--c-primary);box-shadow:0 0 0 4px rgba(29,63,214,.14);flex:0 0 9px}
.tl-body h4{font-size:15.5px;font-weight:700}
.tl-body p{font-size:13.5px;color:var(--c-text-2);margin-top:5px}
.tl-body .tl-tags{display:flex;flex-wrap:wrap;gap:7px;margin-top:9px}

/* ===== 资源列表 ===== */
.list-wrap{
 background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-lg);
 overflow:hidden;box-shadow:var(--sh-sm);
}
.list-head{
 display:grid;grid-template-columns:1.6fr .8fr .7fr .6fr;gap:14px;
 padding:14px 22px;background:#f7f9fd;border-bottom:1px solid var(--c-border);
 font-size:12px;font-weight:700;letter-spacing:.6px;color:var(--c-text-3);
}
.list-row{
 display:grid;grid-template-columns:1.6fr .8fr .7fr .6fr;gap:14px;align-items:center;
 padding:16px 22px;border-bottom:1px solid var(--c-border);transition:background .18s;
}
.list-row:last-child{border-bottom:none}
.list-row:hover{background:#f8faff}
.list-title{display:flex;align-items:center;gap:10px;min-width:0}
.list-title b{font-size:14.5px;font-weight:700;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.rank{flex:0 0 24px;width:24px;height:24px;border-radius:8px;display:grid;place-items:center;font-size:12px;font-weight:800;background:#f0f2f8;color:var(--c-text-2)}
.rank.top{background:linear-gradient(135deg,#ff9d2f,#ff7a18);color:#fff}
.list-meta{font-size:13px;color:var(--c-text-2)}
.list-meta strong{color:var(--c-text);font-weight:700}
.list-actions{text-align:right}
.list-foot{padding:16px 22px;background:#fafbfe;text-align:center;border-top:1px solid var(--c-border)}

/* ===== 深色数据区块 ===== */
.dark-band{
 background:linear-gradient(150deg,#0b1020 0%,#141d3a 60%,#0d1428 100%);
 border-radius:var(--r-xl);color:#fff;padding:42px 34px;position:relative;overflow:hidden;
}
.dark-band::after{
 content:"";position:absolute;right:-80px;top:-80px;width:320px;height:320px;border-radius:50%;
 background:radial-gradient(circle,rgba(29,63,214,.55),transparent 68%);
}
.dark-band-inner{position:relative;z-index:2;display:grid;grid-template-columns:1fr 1.1fr;gap:40px;align-items:center}
.dark-band h2{font-size:25px;font-weight:800;line-height:1.45}
.dark-band .dark-lead{font-size:14.5px;color:#b7c1e2;margin-top:12px;max-width:460px}
.dark-stats{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.dark-stat{
 background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);
 border-radius:var(--r-md);padding:18px;
}
.dark-stat .num{font-size:30px;font-weight:800;color:#8fabff;letter-spacing:-1px;line-height:1.15}
.dark-stat .num small{font-size:14px;color:#ffb865;margin-left:2px}
.dark-stat .lab{font-size:13px;color:#c3cbe8;margin-top:4px}
.dark-stat .hint{font-size:12px;color:#8794bd;margin-top:3px}

/* ===== 画质标准说明条 ===== */
.std-strip{
 background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-lg);
 padding:24px;box-shadow:var(--sh-sm);display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;
}
.std-item h4{font-size:14.5px;font-weight:700;margin-bottom:6px;display:flex;align-items:center;gap:8px}
.std-item h4 i{width:6px;height:18px;border-radius:4px;background:linear-gradient(180deg,#5f83ff,#1d3fd6);display:inline-block}
.std-item p{font-size:13px;color:var(--c-text-2)}

/* ===== FAQ ===== */
.faq-list{display:flex;flex-direction:column;gap:12px}
.faq-item{
 background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-md);
 box-shadow:var(--sh-sm);overflow:hidden;transition:border-color .2s,box-shadow .2s;
}
.faq-item[open]{border-color:#c3cffb;box-shadow:var(--sh-md)}
.faq-item summary{
 list-style:none;cursor:pointer;padding:18px 22px;font-size:15.5px;font-weight:700;
 display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
 content:"+";font-size:20px;font-weight:600;color:var(--c-primary);line-height:1;transition:transform .2s;
}
.faq-item[open] summary::after{content:"−"}
.faq-item summary:hover{color:var(--c-primary-dark)}
.faq-body{padding:0 22px 20px;font-size:14px;color:var(--c-text-2)}

/* ===== 收口 CTA ===== */
.cta-band{
 background:linear-gradient(135deg,#1d3fd6 0%,#3d5cff 55%,#5f83ff 100%);
 border-radius:var(--r-xl);padding:40px 36px;color:#fff;display:flex;
 align-items:center;justify-content:space-between;gap:30px;flex-wrap:wrap;
 box-shadow:0 24px 60px rgba(29,63,214,.35);
}
.cta-band h2{font-size:24px;font-weight:800;line-height:1.45}
.cta-band p{font-size:14px;color:#dbe3ff;margin-top:10px;max-width:600px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}
.cta-band .btn-ghost{background:rgba(255,255,255,.14);color:#fff;border-color:rgba(255,255,255,.4)}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.24);border-color:#fff}

/* ===== 页脚 ===== */
.footer{background:var(--c-dark);color:#9aa5c8;padding:52px 0 26px;margin-top:auto}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:34px}
.footer h4{font-size:14px;font-weight:700;color:#fff;margin-bottom:14px}
.footer p{font-size:13.5px;line-height:1.75}
.footer .footer-note{font-size:12.5px;color:#78849f;margin-top:10px}
.footer-links{display:flex;flex-direction:column;gap:9px}
.footer-links a{font-size:13.5px;color:#9aa5c8;transition:color .2s,transform .2s;display:inline-block}
.footer-links a:hover{color:#fff;transform:translateX(3px)}
.footer-bottom{
 margin-top:36px;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);
 display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:12.5px;color:#78849f;
}

/* ===== 响应式 ===== */
@media (max-width:1180px){
 .container{padding:0 22px}
 .hero h1{font-size:33px}
}
@media (max-width:1024px){
 .layout{flex-direction:column}
 .sidebar{
  position:sticky;top:0;z-index:80;height:auto;width:100%;flex:none;
  flex-direction:row;align-items:center;gap:16px;padding:12px 16px;overflow-x:auto;
  background:linear-gradient(90deg,#0b1020 0%,#131c38 100%);
 }
 .side-nav{flex-direction:row;gap:6px;flex:1;min-width:0}
 .side-nav-title{display:none}
 .side-nav a{padding:8px 12px;font-size:13px;white-space:nowrap}
 .side-nav a:hover{transform:none}
 .side-cta{display:none}
 .hero-inner{grid-template-columns:1fr;gap:32px;padding:40px 0 46px}
 .hero-lead{max-width:100%}
 .metrics{grid-template-columns:repeat(2,minmax(0,1fr))}
 .metric{border-right:none;padding-right:0;border-bottom:1px solid var(--c-border);padding-bottom:14px}
 .metric:nth-last-child(-n+2){border-bottom:none;padding-bottom:0}
 .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
 .dark-band-inner{grid-template-columns:1fr;gap:26px}
 .std-strip{grid-template-columns:repeat(2,minmax(0,1fr))}
 .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:768px){
 .container{padding:0 18px}
 .topbar-inner{height:auto;padding:12px 0;flex-wrap:wrap}
 .search-box{min-width:0;width:100%}
 .hero h1{font-size:27px}
 .hero-points{grid-template-columns:1fr}
 .section{padding:44px 0}
 .section-head h2{font-size:22px}
 .grid-3,.grid-2{grid-template-columns:1fr}
 .list-head{display:none}
 .list-row{grid-template-columns:1fr;gap:8px;padding:16px 18px}
 .list-actions{text-align:left}
 .cta-band{padding:30px 22px}
 .cta-band h2{font-size:20px}
 .dark-band{padding:32px 22px}
 .dark-stats{grid-template-columns:1fr}
 .tl-item{grid-template-columns:1fr;gap:8px}
}
@media (max-width:520px){
 .hero h1{font-size:23px}
 .hero-actions .btn{width:100%}
 .metrics{grid-template-columns:1fr}
 .metric{border-bottom:1px solid var(--c-border);padding-bottom:14px}
 .metric:last-child{border-bottom:none}
 .std-strip{grid-template-columns:1fr}
 .footer-grid{grid-template-columns:1fr}
 .brand-name{font-size:15px}
 .brand-sub{display:none}
}

/* roulang page: category3 */
:root{
 --c-bg:#f5f7fb;
 --c-surface:#ffffff;
 --c-dark:#0b1020;
 --c-dark-2:#121a30;
 --c-primary:#1d3fd6;
 --c-primary-dark:#132c9e;
 --c-primary-soft:#e8edff;
 --c-accent:#ff9d2f;
 --c-accent-soft:#fff2e0;
 --c-text:#151a28;
 --c-text-2:#4a5268;
 --c-text-3:#7b8499;
 --c-border:#e3e7f1;
 --c-border-2:#cdd4e6;
 --r-sm:8px;
 --r-md:14px;
 --r-lg:20px;
 --r-xl:28px;
 --sh-sm:0 2px 8px rgba(18,26,48,.06);
 --sh-md:0 10px 28px rgba(18,26,48,.08);
 --sh-lg:0 24px 60px rgba(18,26,48,.14);
 --sp-1:6px;
 --sp-2:12px;
 --sp-3:18px;
 --sp-4:26px;
 --sp-5:40px;
 --sp-6:64px;
 --nav-w:236px;
 --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
 margin:0;font-family:var(--font);background:var(--c-bg);color:var(--c-text);
 font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid rgba(29,63,214,.45);outline-offset:2px;border-radius:6px}
h1,h2,h3,h4{margin:0}
p{margin:0}
.container{width:100%;max-width:1160px;margin:0 auto;padding:0 30px}

/* ===== 品牌 ===== */
.brand{display:flex;align-items:center;gap:10px}
.brand-mark{
 width:40px;height:40px;border-radius:12px;flex:0 0 40px;
 background:linear-gradient(135deg,var(--c-primary) 0%,#4a6bff 100%);
 display:grid;place-items:center;font-weight:800;font-size:18px;color:#fff;
 box-shadow:0 8px 20px rgba(29,63,214,.45);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-name{font-weight:800;font-size:16px;letter-spacing:.5px}
.brand-sub{font-size:11px;color:#8f9bc4;letter-spacing:1.4px}

/* ===== 侧栏导航 ===== */
.layout{display:flex;align-items:stretch;min-height:100vh}
.sidebar{
 position:sticky;top:0;align-self:flex-start;flex:0 0 var(--nav-w);width:var(--nav-w);
 height:100vh;overflow-y:auto;background:linear-gradient(180deg,#0b1020 0%,#121a30 100%);
 padding:26px 18px;display:flex;flex-direction:column;gap:22px;z-index:60;
}
.sidebar .brand-name{color:#fff}
.side-nav{display:flex;flex-direction:column;gap:4px}
.side-nav-title{font-size:11px;letter-spacing:1.6px;color:#6d78a3;padding:0 10px 6px}
.side-nav a{
 display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:10px;
 font-size:14px;color:#c3cbe8;transition:background .2s,color .2s,transform .2s;
}
.side-nav a .dot{width:6px;height:6px;border-radius:50%;background:#4a5578;flex:0 0 6px;transition:background .2s}
.side-nav a:hover{background:rgba(255,255,255,.07);color:#fff;transform:translateX(2px)}
.side-nav a.active{
 background:linear-gradient(90deg,rgba(29,63,214,.9),rgba(74,107,255,.55));
 color:#fff;font-weight:600;box-shadow:0 8px 20px rgba(29,63,214,.35);
}
.side-nav a.active .dot{background:#fff}
.side-cta{
 background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);
 border-radius:var(--r-md);padding:16px;margin-top:auto;
}
.side-cta h4{font-size:13px;font-weight:700;color:#fff;margin-bottom:6px}
.side-cta p{font-size:12px;color:#93a0c8;line-height:1.6;margin-bottom:12px}
.side-cta .btn{width:100%;justify-content:center}
.side-meta{font-size:11.5px;color:#5b668c;line-height:1.7}

/* ===== 主区域 ===== */
.main{flex:1;min-width:0;display:flex;flex-direction:column}
.topbar{
 position:sticky;top:0;z-index:50;background:rgba(245,247,251,.88);
 backdrop-filter:blur(14px);border-bottom:1px solid var(--c-border);
}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;height:64px}
.topbar-crumb{font-size:13px;color:var(--c-text-3)}
.topbar-crumb strong{color:var(--c-text)}
.topbar-actions{display:flex;align-items:center;gap:10px}
.search-box{
 display:flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--c-border);
 border-radius:999px;padding:7px 14px;min-width:220px;box-shadow:var(--sh-sm);
 transition:border-color .2s,box-shadow .2s;
}
.search-box:focus-within{border-color:var(--c-primary);box-shadow:0 0 0 4px rgba(29,63,214,.12)}
.search-box input{border:none;outline:none;background:transparent;width:100%;font-size:13px}
.search-box i{color:#9aa3ba;font-size:13px}

/* ===== 按钮 / 标签 ===== */
.btn{
 display:inline-flex;align-items:center;gap:8px;justify-content:center;
 padding:11px 22px;border-radius:999px;font-size:14px;font-weight:600;
 border:1px solid transparent;cursor:pointer;
 transition:transform .18s,box-shadow .18s,background .18s,color .18s,border-color .18s;
 white-space:nowrap;
}
.btn-primary{background:linear-gradient(135deg,var(--c-primary),#3d5cff);color:#fff;box-shadow:0 10px 24px rgba(29,63,214,.32)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 32px rgba(29,63,214,.4)}
.btn-ghost{background:#fff;color:var(--c-primary);border-color:var(--c-border-2)}
.btn-ghost:hover{border-color:var(--c-primary);background:var(--c-primary-soft)}
.btn-accent{background:linear-gradient(135deg,#ff9d2f,#ff7a18);color:#241300;box-shadow:0 10px 24px rgba(255,157,47,.36)}
.btn-accent:hover{transform:translateY(-2px);box-shadow:0 16px 32px rgba(255,157,47,.45)}
.btn-light{background:rgba(255,255,255,.14);color:#fff;border-color:rgba(255,255,255,.26)}
.btn-light:hover{background:rgba(255,255,255,.24)}
.btn-sm{padding:8px 16px;font-size:13px}
.btn-block{width:100%}
.tag{
 display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;
 font-size:12px;font-weight:600;background:var(--c-primary-soft);color:var(--c-primary-dark);
}
.tag-accent{background:var(--c-accent-soft);color:#9a5400}
.tag-dark{background:rgba(255,255,255,.12);color:#fff}
.badge-hot{
 display:inline-flex;align-items:center;gap:8px;padding:7px 16px;border-radius:999px;
 background:linear-gradient(135deg,#ff9d2f,#ff6b18);color:#231400;font-size:13px;font-weight:800;
 box-shadow:0 8px 22px rgba(255,107,24,.4);
}
.badge-live{
 display:inline-flex;align-items:center;gap:7px;padding:6px 14px;border-radius:999px;
 background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);color:#fff;font-size:12px;font-weight:600;
}
.badge-live i{width:8px;height:8px;border-radius:50%;background:#42e08a;display:inline-block;box-shadow:0 0 0 4px rgba(66,224,138,.2)}

/* ===== Hero：提问式首屏 ===== */
.hero{
 position:relative;background:radial-gradient(1200px 520px at 78% -10%,#22336e 0%,transparent 60%),
 linear-gradient(160deg,#080c1a 0%,#101830 55%,#0b1226 100%);
 color:#fff;overflow:hidden;border-radius:0 0 var(--r-xl) var(--r-xl);
}
.hero::after{
 content:"";position:absolute;inset:0;pointer-events:none;
 background:radial-gradient(700px 340px at 12% 110%,rgba(29,63,214,.38),transparent 65%);
}
.hero-inner{position:relative;z-index:2;padding:52px 0 58px;display:grid;grid-template-columns:1.08fr .92fr;gap:44px;align-items:center}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:18px}
.hero h1{font-size:38px;line-height:1.3;font-weight:800;letter-spacing:-.4px;margin-bottom:16px}
.hero-sub{font-size:16px;color:#b9c3e2;max-width:580px;margin-bottom:24px}
.hero-points{list-style:none;padding:0;margin:0 0 26px;display:flex;flex-wrap:wrap;gap:10px}
.hero-points li{
 display:inline-flex;align-items:center;gap:7px;font-size:13px;color:#cdd6f1;
 background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.12);
 border-radius:999px;padding:6px 13px;
}
.hero-points i{color:#7d95ff;font-size:12px}
.hero-stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;border-top:1px solid rgba(255,255,255,.12);padding-top:20px}
.hero-stats strong{display:block;font-size:24px;font-weight:800;color:#fff;letter-spacing:-.5px}
.hero-stats span{font-size:12px;color:#93a0c8}
.hero-panel{
 background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);
 border-radius:var(--r-lg);padding:26px;box-shadow:var(--sh-lg);backdrop-filter:blur(10px);
}
.hero-panel h2{font-size:17px;font-weight:700;color:#fff;margin-bottom:6px}
.hero-panel .panel-note{font-size:12.5px;color:#93a0c8;margin-bottom:18px}
.field{margin-bottom:14px}
.field label{display:block;font-size:12px;letter-spacing:.8px;color:#9fabd2;margin-bottom:6px}
.field input,.field select{
 width:100%;padding:12px 14px;border-radius:12px;border:1px solid rgba(255,255,255,.16);
 background:rgba(8,12,26,.62);color:#fff;font-size:14px;outline:none;
 transition:border-color .2s,box-shadow .2s,background .2s;
}
.field input::placeholder{color:#7c88ae}
.field select option{background:#0f1730;color:#fff}
.field input:focus,.field select:focus{border-color:#5b7bff;box-shadow:0 0 0 4px rgba(91,123,255,.22);background:rgba(8,12,26,.8)}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.panel-foot{font-size:12px;color:#7f8cb4;margin-top:12px;text-align:center}

/* ===== 通用板块 ===== */
.section{padding:58px 0}
.section.tight{padding:34px 0}
.section-head{max-width:760px;margin-bottom:32px}
.section-head .eyebrow{
 display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:700;
 letter-spacing:1.4px;color:var(--c-primary);text-transform:uppercase;
}
.section-head h2{font-size:27px;font-weight:800;letter-spacing:-.3px;margin:10px 0 10px;line-height:1.4}
.section-head p{color:var(--c-text-2);font-size:15px}
.section-head.split{display:flex;align-items:flex-end;justify-content:space-between;gap:26px;max-width:none}
.section-head.split .split-text{max-width:700px}
.grid{display:grid;gap:20px}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}

.card{
 background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-lg);
 padding:24px;box-shadow:var(--sh-sm);
 transition:transform .22s,box-shadow .22s,border-color .22s;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-md);border-color:var(--c-border-2)}
.card h3{font-size:17px;font-weight:700;margin-bottom:8px}
.card p{font-size:14px;color:var(--c-text-2);margin-bottom:14px}
.card-icon{
 width:44px;height:44px;border-radius:13px;display:grid;place-items:center;
 background:var(--c-primary-soft);color:var(--c-primary);font-size:18px;margin-bottom:16px;
}
.card-icon.accent{background:var(--c-accent-soft);color:#c46a00}
.card-meta{display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--c-text-3);flex-wrap:wrap}
.card-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:9px}
.card-list li{display:flex;gap:9px;font-size:13.5px;color:var(--c-text-2);align-items:flex-start}
.card-list i{color:var(--c-primary);font-size:12px;margin-top:6px}
.card-num{
 font-size:13px;font-weight:800;color:var(--c-primary);background:var(--c-primary-soft);
 border-radius:8px;padding:3px 10px;display:inline-block;margin-bottom:14px;
}

/* ===== 标签墙 ===== */
.tag-groups{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.tag-group{background:#fff;border:1px solid var(--c-border);border-radius:var(--r-lg);padding:22px;box-shadow:var(--sh-sm)}
.tag-group h3{font-size:15px;font-weight:700;margin-bottom:6px}
.tag-group .group-note{font-size:12.5px;color:var(--c-text-3);margin-bottom:14px}
.tag-cloud{display:flex;flex-wrap:wrap;gap:8px}
.tag-cloud span{
 display:inline-flex;padding:6px 13px;border-radius:999px;font-size:13px;
 background:#f2f5fd;color:#37416a;border:1px solid #e6ebf9;
 transition:background .2s,color .2s,border-color .2s,transform .2s;cursor:default;
}
.tag-cloud span:hover{background:var(--c-primary-soft);color:var(--c-primary-dark);border-color:#c9d5ff;transform:translateY(-2px)}

/* ===== 深色数据带 ===== */
.dark-band{
 position:relative;overflow:hidden;color:#fff;border-radius:var(--r-xl);padding:42px;
 background:linear-gradient(140deg,#0b1020 0%,#141d3a 62%,#1b2550 100%);
 box-shadow:var(--sh-lg);
}
.dark-band::after{
 content:"";position:absolute;right:-120px;top:-120px;width:360px;height:360px;border-radius:50%;
 background:radial-gradient(circle,rgba(74,107,255,.45),transparent 68%);
}
.dark-band .band-head{position:relative;z-index:2;display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px}
.dark-band h2{font-size:24px;font-weight:800;margin:8px 0 8px}
.dark-band .band-head p{font-size:14px;color:#a9b5db;max-width:620px}
.metric-grid{position:relative;z-index:2;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}
.metric{border-left:2px solid rgba(122,146,255,.5);padding-left:18px}
.metric strong{
 display:block;font-size:36px;font-weight:800;letter-spacing:-1px;line-height:1.2;
 background:linear-gradient(120deg,#9fb2ff,#ffffff);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.metric span{font-size:13px;color:#93a0c8;display:block;margin-top:4px}
.metric em{font-style:normal;font-size:12px;color:#5f6c96}

/* ===== 频道矩阵 ===== */
.matrix-card{
 position:relative;background:#fff;border:1px solid var(--c-border);border-radius:var(--r-lg);
 padding:26px;box-shadow:var(--sh-sm);display:flex;flex-direction:column;gap:12px;
 transition:transform .22s,box-shadow .22s,border-color .22s;
}
.matrix-card:hover{transform:translateY(-4px);box-shadow:var(--sh-md);border-color:var(--c-border-2)}
.matrix-card.is-current{border-color:var(--c-primary);box-shadow:0 18px 40px rgba(29,63,214,.16)}
.matrix-card .matrix-tag{
 position:absolute;top:20px;right:20px;font-size:11.5px;font-weight:700;letter-spacing:.6px;
 padding:4px 10px;border-radius:999px;background:var(--c-primary);color:#fff;
}
.matrix-card h3{font-size:18px;font-weight:800}
.matrix-card p{font-size:14px;color:var(--c-text-2);flex:1}
.matrix-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;border-top:1px solid var(--c-border);padding-top:14px}
.matrix-foot .count{font-size:12.5px;color:var(--c-text-3)}
.matrix-link{font-size:13.5px;font-weight:700;color:var(--c-primary);display:inline-flex;align-items:center;gap:7px}
.matrix-link:hover{color:var(--c-primary-dark)}
.matrix-link i{transition:transform .2s}
.matrix-link:hover i{transform:translateX(3px)}

/* ===== 排行列表 ===== */
.rank-list{display:flex;flex-direction:column;gap:12px}
.rank-item{
 display:grid;grid-template-columns:auto 1fr auto;gap:18px;align-items:center;
 background:#fff;border:1px solid var(--c-border);border-radius:var(--r-md);
 padding:16px 20px;box-shadow:var(--sh-sm);
 transition:transform .2s,box-shadow .2s,border-color .2s;
}
.rank-item:hover{transform:translateX(4px);box-shadow:var(--sh-md);border-color:var(--c-border-2)}
.rank-no{
 width:38px;height:38px;border-radius:11px;display:grid;place-items:center;
 font-weight:800;font-size:15px;background:#eef2fd;color:#3b4877;
}
.rank-item.top .rank-no{background:linear-gradient(135deg,#ff9d2f,#ff7a18);color:#2a1600;box-shadow:0 8px 18px rgba(255,122,24,.32)}
.rank-body h3{font-size:15.5px;font-weight:700;margin-bottom:4px}
.rank-body p{font-size:13px;color:var(--c-text-3);margin-bottom:6px}
.bar{height:6px;border-radius:999px;background:#eef1f8;overflow:hidden}
.bar span{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--c-primary),#6a8bff)}
.rank-side{text-align:right;min-width:120px}
.rank-side strong{display:block;font-size:19px;font-weight:800;color:var(--c-primary-dark)}
.rank-side small{font-size:12px;color:var(--c-text-3)}
.rank-side a{font-size:12.5px;color:var(--c-primary);font-weight:700}

/* ===== 精选合集 ===== */
.pick-card{
 background:#fff;border:1px solid var(--c-border);border-radius:var(--r-lg);overflow:hidden;
 box-shadow:var(--sh-sm);display:flex;flex-direction:column;
 transition:transform .22s,box-shadow .22s;
}
.pick-card:hover{transform:translateY(-4px);box-shadow:var(--sh-md)}
.pick-cover{
 height:132px;background:linear-gradient(135deg,#1d3fd6,#4a6bff 55%,#7d5cff);
 position:relative;display:grid;place-items:center;color:#fff;
}
.pick-cover.alt{background:linear-gradient(135deg,#0b1020,#22336e 60%,#3d5cff)}
.pick-cover.warm{background:linear-gradient(135deg,#ff9d2f,#ff6b18 65%,#ff4ec4)}
.pick-cover i{font-size:34px;opacity:.92}
.pick-cover .cover-label{
 position:absolute;left:16px;bottom:14px;font-size:12.5px;font-weight:600;
 background:rgba(0,0,0,.32);border:1px solid rgba(255,255,255,.28);padding:4px 12px;border-radius:999px;
}
.pick-body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1}
.pick-body h3{font-size:16.5px;font-weight:700}
.pick-body p{font-size:13.8px;color:var(--c-text-2);flex:1}
.pick-body .pick-meta{display:flex;gap:16px;font-size:12.5px;color:var(--c-text-3);flex-wrap:wrap}

/* ===== 更新节奏 ===== */
.rhythm-wrap{display:grid;grid-template-columns:1fr 1fr;gap:26px;align-items:start}
.timeline{position:relative;padding-left:26px;border-left:2px solid var(--c-border);margin-left:8px}
.tl-item{position:relative;padding-bottom:24px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{
 content:"";position:absolute;left:-35px;top:6px;width:14px;height:14px;border-radius:50%;
 background:#fff;border:3px solid var(--c-primary);box-shadow:0 0 0 4px rgba(29,63,214,.12);
}
.tl-item h3{font-size:15.5px;font-weight:700;margin-bottom:5px}
.tl-item time{font-size:12.5px;font-weight:700;color:var(--c-accent);letter-spacing:.6px;display:block;margin-bottom:5px}
.tl-item p{font-size:13.8px;color:var(--c-text-2)}
.rhythm-side{display:flex;flex-direction:column;gap:16px}
.rhythm-box{background:#fff;border:1px solid var(--c-border);border-radius:var(--r-lg);padding:22px;box-shadow:var(--sh-sm)}
.rhythm-box h3{font-size:15.5px;font-weight:700;margin-bottom:10px}
.rhythm-box p{font-size:13.8px;color:var(--c-text-2)}
.rhythm-box .kv{display:flex;justify-content:space-between;gap:12px;font-size:13.5px;padding:9px 0;border-bottom:1px dashed var(--c-border)}
.rhythm-box .kv:last-child{border-bottom:none}
.rhythm-box .kv span{color:var(--c-text-3)}
.rhythm-box .kv strong{color:var(--c-text);font-weight:700}

/* ===== FAQ ===== */
.faq{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.faq-item{
 background:#fff;border:1px solid var(--c-border);border-radius:var(--r-md);
 padding:20px 22px;box-shadow:var(--sh-sm);transition:border-color .2s,box-shadow .2s;
}
.faq-item:hover{border-color:var(--c-primary);box-shadow:var(--sh-md)}
.faq-item h3{font-size:15.5px;font-weight:700;margin-bottom:9px;display:flex;gap:10px;align-items:flex-start}
.faq-item h3 i{color:var(--c-primary);font-size:14px;margin-top:5px}
.faq-item p{font-size:13.8px;color:var(--c-text-2)}

/* ===== 收口 CTA ===== */
.cta-band{
 position:relative;overflow:hidden;border-radius:var(--r-xl);padding:44px;
 background:linear-gradient(135deg,#132c9e 0%,#1d3fd6 52%,#5b46ff 100%);
 color:#fff;display:flex;align-items:center;justify-content:space-between;gap:30px;
 box-shadow:0 26px 60px rgba(29,63,214,.32);
}
.cta-band::after{
 content:"";position:absolute;right:-90px;bottom:-120px;width:320px;height:320px;border-radius:50%;
 background:radial-gradient(circle,rgba(255,255,255,.24),transparent 68%);
}
.cta-copy{position:relative;z-index:2;max-width:660px}
.cta-copy h2{font-size:26px;font-weight:800;margin-bottom:10px}
.cta-copy p{font-size:14.5px;color:#dfe5ff}
.cta-actions{position:relative;z-index:2;display:flex;gap:12px;flex-wrap:wrap}

/* ===== 页脚 ===== */
.footer{background:#0b1020;color:#a9b3d4;padding:52px 0 22px;margin-top:auto}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:32px}
.footer h4{color:#fff;font-size:14px;margin-bottom:14px}
.footer p{font-size:13.5px;line-height:1.85;margin-bottom:10px;max-width:380px}
.footer-note{color:#6d78a3;font-size:12.5px}
.footer-links{display:flex;flex-direction:column;gap:9px}
.footer-links a{font-size:13.5px;color:#a9b3d4;transition:color .2s,transform .2s}
.footer-links a:hover{color:#fff;transform:translateX(2px)}
.footer-bottom{
 margin-top:34px;padding-top:18px;border-top:1px solid rgba(255,255,255,.08);
 display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
 font-size:12.5px;color:#6d78a3;
}

/* ===== 响应式 ===== */
@media (max-width:1180px){
 .hero h1{font-size:34px}
 .hero-inner{gap:32px}
 .metric-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:1024px){
 .layout{display:block}
 .sidebar{
  position:static;width:auto;flex:none;height:auto;padding:16px 20px;
  flex-direction:row;align-items:center;flex-wrap:wrap;gap:14px;
 }
 .sidebar .side-nav{flex-direction:row;gap:6px;flex:1;overflow-x:auto;padding-bottom:2px}
 .side-nav-title{display:none}
 .side-nav a{white-space:nowrap;background:rgba(255,255,255,.05)}
 .side-cta,.side-meta{display:none}
 .hero-inner{grid-template-columns:1fr;padding:42px 0 48px}
 .hero-sub{max-width:none}
 .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
 .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
 .tag-groups{grid-template-columns:repeat(2,minmax(0,1fr))}
 .rhythm-wrap{grid-template-columns:1fr}
 .footer-grid{grid-template-columns:1fr 1fr;gap:26px}
 .cta-band{flex-direction:column;align-items:flex-start;padding:36px}
}
@media (max-width:768px){
 .container{padding:0 18px}
 .section{padding:42px 0}
 .section.tight{padding:26px 0}
 .topbar-actions .search-box{display:none}
 .hero h1{font-size:27px}
 .hero-stats{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
 .hero-panel{padding:20px}
 .field-row{grid-template-columns:1fr}
 .section-head h2{font-size:22px}
 .section-head.split{flex-direction:column;align-items:flex-start;gap:14px}
 .grid-2,.grid-3,.grid-4,.tag-groups{grid-template-columns:1fr}
 .dark-band{padding:28px}
 .dark-band .band-head{flex-direction:column;align-items:flex-start}
 .metric-grid{grid-template-columns:1fr;gap:18px}
 .rank-item{grid-template-columns:auto 1fr;row-gap:12px}
 .rank-side{grid-column:2;text-align:left;min-width:0;display:flex;align-items:center;gap:14px}
 .rank-side strong{font-size:16px}
 .faq{grid-template-columns:1fr}
 .cta-band{padding:30px 24px}
 .cta-copy h2{font-size:21px}
 .footer-grid{grid-template-columns:1fr}
}
@media (max-width:520px){
 .sidebar{padding:14px 14px}
 .side-nav a{font-size:13px;padding:8px 10px}
 .hero h1{font-size:23px}
 .hero-sub{font-size:14.5px}
 .hero-points li{font-size:12.5px}
 .hero-panel h2{font-size:16px}
 .btn{padding:10px 18px;font-size:13.5px}
 .cta-actions{width:100%}
 .cta-actions .btn{width:100%}
}

/* roulang page: category2 */
:root{
 --c-bg:#f5f7fb;
 --c-surface:#ffffff;
 --c-dark:#0b1020;
 --c-dark-2:#121a30;
 --c-primary:#1d3fd6;
 --c-primary-dark:#132c9e;
 --c-primary-soft:#e8edff;
 --c-accent:#ff9d2f;
 --c-accent-soft:#fff2e0;
 --c-text:#151a28;
 --c-text-2:#4a5268;
 --c-text-3:#7b8499;
 --c-border:#e3e7f1;
 --c-border-2:#cdd4e6;
 --r-sm:8px;
 --r-md:14px;
 --r-lg:20px;
 --r-xl:28px;
 --sh-sm:0 2px 8px rgba(18,26,48,.06);
 --sh-md:0 10px 28px rgba(18,26,48,.08);
 --sh-lg:0 24px 60px rgba(18,26,48,.14);
 --sp-1:6px;
 --sp-2:12px;
 --sp-3:18px;
 --sp-4:26px;
 --sp-5:40px;
 --sp-6:64px;
 --nav-w:236px;
 --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
 margin:0;font-family:var(--font);background:var(--c-bg);color:var(--c-text);
 font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased;
 display:flex;min-height:100vh;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
h1,h2,h3,h4{margin:0 0 12px;font-weight:800;line-height:1.32;color:var(--c-text)}
p{margin:0 0 12px}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:3px solid rgba(29,63,214,.45);outline-offset:2px;border-radius:6px}

/* ===== 左侧竖向导航 ===== */
.sidebar{
 width:var(--nav-w);flex:0 0 var(--nav-w);
 background:linear-gradient(180deg,#0b1020 0%,#131c38 100%);
 color:#fff;padding:26px 18px 22px;position:sticky;top:0;height:100vh;
 display:flex;flex-direction:column;gap:22px;overflow-y:auto;z-index:80;
}
.brand{display:flex;align-items:center;gap:10px}
.brand-mark{
 width:40px;height:40px;border-radius:12px;flex:0 0 40px;
 background:linear-gradient(135deg,var(--c-primary) 0%,#4a6bff 100%);
 display:grid;place-items:center;font-weight:800;font-size:18px;color:#fff;
 box-shadow:0 8px 20px rgba(29,63,214,.45);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-name{font-weight:800;font-size:16px;letter-spacing:.5px}
.brand-sub{font-size:11px;color:#8f9bc4;letter-spacing:1.4px}
.side-nav{display:flex;flex-direction:column;gap:4px}
.side-nav-title{font-size:11px;letter-spacing:1.6px;color:#6d78a3;padding:0 10px 6px}
.side-nav a{
 display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:10px;
 font-size:14px;color:#c3cbe8;transition:background .2s,color .2s,transform .2s;
}
.side-nav a:hover{background:rgba(255,255,255,.07);color:#fff;transform:translateX(2px)}
.side-nav a.active{
 background:linear-gradient(90deg,rgba(29,63,214,.9),rgba(74,107,255,.55));
 color:#fff;font-weight:600;box-shadow:0 8px 20px rgba(29,63,214,.35);
}
.side-nav a .dot{width:6px;height:6px;border-radius:50%;background:#4b5680;flex:0 0 6px;transition:background .2s}
.side-nav a:hover .dot{background:#8f9bc4}
.side-nav a.active .dot{background:#fff}
.side-cta{
 background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);
 border-radius:var(--r-md);padding:16px;margin-top:auto;
}
.side-cta h4{font-size:13px;font-weight:700;color:#fff;margin-bottom:6px}
.side-cta p{font-size:12px;color:#93a0c8;line-height:1.6;margin-bottom:12px}
.side-cta .btn{width:100%;justify-content:center}
.side-foot{font-size:11px;color:#5f6a92;letter-spacing:.5px}

/* ===== 主内容区 ===== */
.main{flex:1;min-width:0;display:flex;flex-direction:column}
.container{width:100%;max-width:1160px;margin:0 auto;padding:0 30px}
.topbar{
 position:sticky;top:0;z-index:50;background:rgba(245,247,251,.9);
 backdrop-filter:blur(14px);border-bottom:1px solid var(--c-border);
}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;height:66px}
.topbar-crumb{font-size:13px;color:var(--c-text-3);white-space:nowrap}
.topbar-crumb strong{color:var(--c-text)}
.topbar-actions{display:flex;align-items:center;gap:10px;min-width:0}
.search-box{
 display:flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--c-border);
 border-radius:999px;padding:7px 14px;min-width:250px;box-shadow:var(--sh-sm);
 transition:border-color .2s,box-shadow .2s;
}
.search-box:focus-within{border-color:var(--c-primary);box-shadow:0 0 0 4px rgba(29,63,214,.12)}
.search-box input{border:none;outline:none;background:transparent;width:100%;font-size:13px}
.search-box i{color:#9aa3bb;font-size:13px}

/* ===== 按钮 / 标签 ===== */
.btn{
 display:inline-flex;align-items:center;gap:8px;justify-content:center;
 padding:11px 22px;border-radius:999px;font-size:14px;font-weight:600;
 border:1px solid transparent;cursor:pointer;
 transition:transform .18s,box-shadow .18s,background .18s,color .18s,border-color .18s;
 white-space:nowrap;
}
.btn-primary{background:linear-gradient(135deg,var(--c-primary),#3d5cff);color:#fff;box-shadow:0 10px 24px rgba(29,63,214,.32)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 32px rgba(29,63,214,.4);color:#fff}
.btn-ghost{background:#fff;color:var(--c-primary);border-color:var(--c-border-2)}
.btn-ghost:hover{border-color:var(--c-primary);background:var(--c-primary-soft)}
.btn-accent{background:linear-gradient(135deg,#ff9d2f,#ff7a18);color:#241300;box-shadow:0 10px 24px rgba(255,157,47,.36)}
.btn-accent:hover{transform:translateY(-2px);color:#241300}
.btn-sm{padding:8px 16px;font-size:13px}
.tag{
 display:inline-flex;align-items:center;gap:6px;padding:3px 11px;border-radius:999px;
 font-size:12px;font-weight:600;background:var(--c-primary-soft);color:var(--c-primary-dark);
}
.tag-accent{background:var(--c-accent-soft);color:#9a5400}
.badge-hot{
 display:inline-flex;align-items:center;gap:8px;padding:7px 16px;border-radius:999px;
 background:linear-gradient(135deg,#ff9d2f,#ff6b18);color:#231400;font-size:13px;font-weight:800;
 box-shadow:0 8px 22px rgba(255,107,24,.4);
}
.badge-live{
 display:inline-flex;align-items:center;gap:7px;padding:6px 14px;border-radius:999px;
 background:#fff;border:1px solid var(--c-border-2);color:var(--c-text-2);font-size:12px;font-weight:600;
}
.badge-live i{width:8px;height:8px;border-radius:50%;background:#18c07a;display:inline-block;box-shadow:0 0 0 4px rgba(24,192,122,.18)}

/* ===== Hero：浅色促销主视觉 ===== */
.hero{
 position:relative;overflow:hidden;
 background:linear-gradient(150deg,#eef3ff 0%,#f7f9ff 48%,#ffffff 100%);
 border-bottom:1px solid var(--c-border);
}
.hero::before{
 content:"";position:absolute;right:-160px;top:-180px;width:560px;height:560px;border-radius:50%;
 background:radial-gradient(circle,rgba(29,63,214,.18),transparent 66%);
}
.hero::after{
 content:"";position:absolute;left:-120px;bottom:-200px;width:420px;height:420px;border-radius:50%;
 background:radial-gradient(circle,rgba(255,157,47,.16),transparent 68%);
}
.hero-inner{
 position:relative;z-index:2;padding:56px 0 60px;
 display:grid;grid-template-columns:1.22fr .78fr;gap:46px;align-items:center;
}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:18px}
.hero h1{font-size:clamp(26px,3.3vw,40px);line-height:1.28;font-weight:800;letter-spacing:-.5px;margin-bottom:16px}
.hero-lead{font-size:15.5px;color:var(--c-text-2);max-width:620px;margin-bottom:22px}
.hero-countdown{
 display:inline-flex;align-items:center;gap:12px;flex-wrap:wrap;
 background:#fff;border:1px solid var(--c-border-2);border-radius:999px;
 padding:8px 20px;box-shadow:var(--sh-sm);margin-bottom:24px;font-size:13px;color:var(--c-text-2);
}
.cd-label{font-weight:600}
.cd-time{font-weight:900;color:#e0480f;letter-spacing:.5px;font-variant-numeric:tabular-nums}
.cd-note{font-size:12px;color:var(--c-text-3)}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px}
.hero-panel{
 position:relative;background:var(--c-surface);border:1px solid var(--c-border);
 border-radius:var(--r-lg);padding:28px 26px 24px;box-shadow:var(--sh-lg);
}
.sticker{
 position:absolute;top:-16px;right:20px;transform:rotate(7deg);
 background:linear-gradient(135deg,#ff9d2f,#ff5f1f);color:#231400;
 font-weight:900;font-size:12px;letter-spacing:1.4px;padding:8px 16px;border-radius:999px;
 box-shadow:0 12px 24px rgba(255,95,31,.38);
}
.hero-panel h3{font-size:16px;margin-bottom:14px}
.data-list li{
 display:flex;justify-content:space-between;align-items:center;gap:12px;
 padding:10px 0;border-bottom:1px dashed var(--c-border);font-size:14px;color:var(--c-text-2);
}
.data-list li:last-child{border-bottom:none}
.data-list li strong{font-size:20px;font-weight:800;color:var(--c-primary-dark);font-variant-numeric:tabular-nums}
.panel-bar{height:8px;border-radius:999px;background:var(--c-primary-soft);overflow:hidden;margin:16px 0 10px}
.panel-bar span{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--c-primary),#4a6bff)}
.panel-note{font-size:12px;color:var(--c-text-3);margin:0}

/* ===== 数据指标条 ===== */
.metrics{
 background:linear-gradient(120deg,#0b1020 0%,#161f40 55%,#0b1020 100%);
 padding:36px 0;color:#fff;position:relative;overflow:hidden;
}
.metrics::after{
 content:"";position:absolute;right:-60px;top:-120px;width:340px;height:340px;border-radius:50%;
 background:radial-gradient(circle,rgba(29,63,214,.45),transparent 70%);
}
.metrics-grid{position:relative;z-index:2;display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.metric{border-left:2px solid rgba(255,255,255,.14);padding-left:18px}
.metric-num{display:block;font-size:32px;font-weight:900;line-height:1.1;letter-spacing:-.5px;font-variant-numeric:tabular-nums}
.metric-num em{font-style:normal;font-size:16px;color:var(--c-accent);margin-left:3px;font-weight:800}
.metric-label{display:block;font-size:14px;font-weight:600;color:#c3cbe8;margin-top:6px}
.metric-sub{display:block;font-size:12px;color:#7b84a8;margin-top:2px}

/* ===== 板块通用 ===== */
.section{padding:58px 0}
.section-alt{background:#fff;border-top:1px solid var(--c-border);border-bottom:1px solid var(--c-border)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:22px;flex-wrap:wrap;margin-bottom:30px}
.eyebrow{
 display:inline-block;font-size:11.5px;font-weight:800;letter-spacing:2px;
 color:var(--c-primary);background:var(--c-primary-soft);padding:4px 12px;border-radius:999px;margin-bottom:10px;
}
.section-head h2{font-size:clamp(22px,2.3vw,28px);margin:0}
.section-head p{color:var(--c-text-2);font-size:14px;margin:8px 0 0;max-width:660px}
.link-more{font-size:13.5px;font-weight:700;color:var(--c-primary);white-space:nowrap;transition:color .2s}
.link-more:hover{color:var(--c-primary-dark);text-decoration:underline}

/* ===== 专题矩阵 ===== */
.matrix-card{
 display:block;height:100%;background:var(--c-surface);border:1px solid var(--c-border);
 border-radius:var(--r-md);padding:24px;position:relative;overflow:hidden;
 box-shadow:var(--sh-sm);transition:transform .22s,box-shadow .22s,border-color .22s;
}
.matrix-card::after{
 content:"";position:absolute;left:0;top:0;width:100%;height:3px;
 background:linear-gradient(90deg,var(--c-primary),#4a6bff);opacity:0;transition:opacity .22s;
}
.matrix-card:hover{transform:translateY(-4px);box-shadow:var(--sh-md);border-color:var(--c-border-2)}
.matrix-card:hover::after{opacity:1}
.matrix-idx{display:block;font-size:12px;font-weight:900;letter-spacing:2px;color:var(--c-primary);margin-bottom:10px}
.matrix-card h3{font-size:18px;margin-bottom:8px}
.matrix-card p{font-size:13.5px;color:var(--c-text-2);margin-bottom:16px;min-height:72px}
.matrix-meta{font-size:12px;font-weight:600;color:var(--c-text-3);display:flex;align-items:center;gap:6px}

/* ===== 热度榜 ===== */
.rank-list{background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-sm)}
.rank-item{
 display:grid;grid-template-columns:56px 1fr 190px 96px;gap:18px;align-items:center;
 padding:16px 24px;border-bottom:1px solid var(--c-border);transition:background .2s;
}
.rank-item:last-child{border-bottom:none}
.rank-item:hover{background:#f8faff}
.rank-no{font-size:20px;font-weight:900;color:var(--c-border-2);font-variant-numeric:tabular-nums}
.rank-no.top1{color:#ff8a00}
.rank-no.top2{color:#3d5cff}
.rank-no.top3{color:#18a06a}
.rank-title{font-size:15px;font-weight:700;line-height:1.5}
.rank-tags{display:flex;gap:6px;flex-wrap:wrap;margin-top:6px}
.rank-bar{height:8px;border-radius:999px;background:var(--c-primary-soft);overflow:hidden}
.rank-bar span{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--c-primary),#4a6bff)}
.rank-score{text-align:right;font-size:19px;font-weight:900;color:var(--c-primary-dark);font-variant-numeric:tabular-nums}
.rank-score small{display:block;font-size:11px;font-weight:600;color:var(--c-text-3)}
.rank-empty{display:none;padding:28px 24px;text-align:center;color:var(--c-text-3);font-size:14px}
.rank-foot{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;margin-top:18px;font-size:12.5px;color:var(--c-text-3)}

/* ===== 编辑精选 ===== */
.pick-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.pick-card{
 background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-md);
 overflow:hidden;box-shadow:var(--sh-sm);transition:transform .22s,box-shadow .22s;
}
.pick-card:hover{transform:translateY(-4px);box-shadow:var(--sh-md)}
.pick-cover{
 height:148px;display:flex;align-items:flex-end;padding:16px;color:#fff;position:relative;overflow:hidden;
}
.pick-cover--a{background:linear-gradient(135deg,#1d3fd6,#4a6bff 55%,#0b1020)}
.pick-cover--b{background:linear-gradient(135deg,#0b1020,#27408f 60%,#4a6bff)}
.pick-cover--c{background:linear-gradient(135deg,#132c9e,#3d5cff 45%,#121a30)}
.pick-cover span{
 font-size:12px;font-weight:700;letter-spacing:1px;
 background:rgba(255,255,255,.18);border:1px solid rgba(255,255,255,.25);
 padding:4px 12px;border-radius:999px;
}
.pick-body{padding:20px}
.pick-body h3{font-size:16.5px;margin-bottom:8px}
.pick-body p{font-size:13.5px;color:var(--c-text-2);margin-bottom:0}
.pick-meta{
 display:flex;justify-content:space-between;gap:10px;margin-top:16px;padding-top:12px;
 border-top:1px dashed var(--c-border);font-size:12px;color:var(--c-text-3);
}

/* ===== 更新节奏时间线 ===== */
.timeline-wrap{display:grid;grid-template-columns:.85fr 1.15fr;gap:40px;align-items:start}
.timeline{position:relative;padding-left:26px;border-left:2px dashed var(--c-border-2);display:flex;flex-direction:column;gap:24px}
.tl-item{position:relative}
.tl-item::before{
 content:"";position:absolute;left:-35px;top:6px;width:14px;height:14px;border-radius:50%;
 background:#fff;border:3px solid var(--c-primary);
}
.tl-time{font-size:12.5px;font-weight:800;color:var(--c-primary);letter-spacing:.5px}
.tl-item h3{font-size:15.5px;margin:4px 0 6px}
.tl-item p{font-size:13.5px;color:var(--c-text-2);margin:0}
.spec-card{
 background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-lg);
 padding:26px;box-shadow:var(--sh-sm);
}
.spec-card h3{font-size:17px;margin-bottom:14px}
.spec-list li{display:flex;justify-content:space-between;gap:14px;padding:11px 0;border-bottom:1px dashed var(--c-border);font-size:13.5px;color:var(--c-text-2)}
.spec-list li:last-child{border-bottom:none}
.spec-list li strong{color:var(--c-text);font-weight:700}

/* ===== 口碑 ===== */
.quote-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.quote{
 background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-md);
 padding:24px;box-shadow:var(--sh-sm);transition:box-shadow .22s,transform .22s;
}
.quote:hover{box-shadow:var(--sh-md);transform:translateY(-3px)}
.stars{color:#ff9d2f;font-size:12px;letter-spacing:2px;margin-bottom:10px}
.quote p{font-size:14px;color:var(--c-text-2);line-height:1.85;margin-bottom:0}
.quote-who{display:flex;align-items:center;gap:10px;margin-top:16px;padding-top:14px;border-top:1px dashed var(--c-border)}
.quote-avatar{
 width:36px;height:36px;border-radius:50%;flex:0 0 36px;display:grid;place-items:center;
 background:linear-gradient(135deg,var(--c-primary),#4a6bff);color:#fff;font-weight:800;font-size:14px;
}
.quote-who span{font-size:13px;font-weight:700}
.quote-who small{display:block;font-size:11.5px;color:var(--c-text-3);font-weight:500}

/* ===== FAQ ===== */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:920px}
.faq-item{background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--r-md);box-shadow:var(--sh-sm);overflow:hidden}
.faq-item summary{
 list-style:none;cursor:pointer;padding:18px 22px;font-weight:700;font-size:15px;
 display:flex;justify-content:space-between;align-items:center;gap:14px;transition:background .2s;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";font-size:20px;font-weight:700;color:var(--c-primary);transition:transform .25s}
.faq-item[open] summary{background:#f8faff}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-body{padding:0 22px 20px;font-size:14px;color:var(--c-text-2);line-height:1.85}

/* ===== CTA ===== */
.cta{
 position:relative;overflow:hidden;color:#fff;border-radius:var(--r-xl);
 background:linear-gradient(120deg,#0b1020 0%,#182450 55%,#0b1020 100%);
 padding:46px;display:grid;grid-template-columns:1.08fr .92fr;gap:36px;align-items:center;
 box-shadow:var(--sh-lg);
}
.cta::after{
 content:"";position:absolute;right:-90px;bottom:-140px;width:380px;height:380px;border-radius:50%;
 background:radial-gradient(circle,rgba(29,63,214,.55),transparent 70%);
}
.cta > *{position:relative;z-index:2}
.cta h2{color:#fff;font-size:clamp(22px,2.4vw,27px);margin-bottom:12px}
.cta p{color:#aab4d6;font-size:14px;margin-bottom:0}
.cta-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.cta-tags span{
 font-size:12px;font-weight:600;color:#dfe5ff;background:rgba(255,255,255,.08);
 border:1px solid rgba(255,255,255,.16);border-radius:999px;padding:4px 12px;
}
.subscribe-form{
 display:flex;gap:10px;background:rgba(255,255,255,.07);
 border:1px solid rgba(255,255,255,.16);border-radius:999px;padding:8px;
}
.subscribe-form input{flex:1;min-width:0;background:transparent;border:none;outline:none;color:#fff;padding:10px 16px;font-size:14px}
.subscribe-form input::placeholder{color:#7b84a8}
.form-note{font-size:12px;color:#7b84a8;margin:10px 0 0}

/* ===== 页脚 ===== */
.footer{background:linear-gradient(180deg,#0b1020 0%,#101830 100%);color:#c3cbe8;padding:52px 0 0;margin-top:auto}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:34px}
.footer h4{color:#fff;font-size:14px;letter-spacing:.5px;margin-bottom:14px}
.footer p{font-size:13.5px;color:#8f9bc4;line-height:1.8}
.footer-note{font-size:12.5px;color:#6d78a3;margin:0}
.footer-links{display:flex;flex-direction:column;gap:9px}
.footer-links a{font-size:13.5px;color:#aab4d6;transition:color .2s,transform .2s}
.footer-links a:hover{color:#fff;transform:translateX(2px)}
.footer-bottom{
 display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
 margin-top:42px;padding:18px 0;border-top:1px solid rgba(255,255,255,.08);
 font-size:12.5px;color:#7b84a8;
}

/* ===== 响应式 ===== */
@media (max-width:1024px){
 body{display:block}
 .sidebar{
  position:sticky;top:0;width:100%;height:auto;flex-direction:row;align-items:center;
  gap:16px;padding:12px 18px;overflow-x:auto;overflow-y:hidden;
  border-bottom:1px solid rgba(255,255,255,.08);
 }
 .sidebar .brand{flex:0 0 auto}
 .side-nav{flex-direction:row;gap:6px;flex:1;min-width:0}
 .side-nav-title{display:none}
 .side-nav a{padding:8px 12px;font-size:13px;white-space:nowrap}
 .side-nav a:hover{transform:none}
 .side-cta,.side-foot{display:none}
 .hero-inner{grid-template-columns:1fr;gap:32px;padding:42px 0 48px}
 .metrics-grid{grid-template-columns:repeat(2,1fr);gap:24px}
 .pick-grid,.quote-grid{grid-template-columns:repeat(2,1fr)}
 .timeline-wrap{grid-template-columns:1fr;gap:30px}
 .footer-grid{grid-template-columns:1fr 1fr}
 .cta{grid-template-columns:1fr;padding:36px}
 .rank-item{grid-template-columns:48px 1fr 110px}
 .rank-bar{display:none}
}
@media (max-width:768px){
 .container{padding:0 18px}
 .topbar-inner{height:60px}
 .search-box{min-width:0;flex:1}
 .section{padding:44px 0}
 .section-head{margin-bottom:22px}
 .pick-grid,.quote-grid{grid-template-columns:1fr}
 .matrix-card p{min-height:0}
 .footer-grid{grid-template-columns:1fr;gap:26px}
 .subscribe-form{flex-direction:column;border-radius:var(--r-md)}
 .subscribe-form input{padding:12px 16px;width:100%}
 .subscribe-form .btn{width:100%}
 .hero-actions .btn{flex:1 1 100%}
}
@media (max-width:520px){
 .topbar-actions .search-box{display:none}
 .hero h1{font-size:25px;line-height:1.35}
 .hero-lead{font-size:14.5px}
 .metric-num{font-size:26px}
 .rank-item{grid-template-columns:34px 1fr 76px;gap:12px;padding:14px 16px}
 .rank-title{font-size:14px}
 .rank-score{font-size:16px}
 .rank-score small{font-size:10px}
 .cta{padding:26px 20px;border-radius:var(--r-lg)}
 .cta h2{font-size:21px}
}

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}