/* roulang page: index */
:root{
  --brand:#1A5FD0;
  --brand-deep:#0E45A8;
  --brand-soft:#E8F0FE;
  --brand-soft-2:#F2F7FF;
  --accent:#FF6B4A;
  --bg:#F7F9FC;
  --card:#FFFFFF;
  --text:#1A2333;
  --sub:#5B6B82;
  --line:#E6ECF5;
  --line-soft:#EDF2FA;
  --r-card:16px;
  --r-img:12px;
  --r-btn:10px;
  --sh-card:0 8px 24px rgba(26,95,208,.08);
  --sh-hover:0 14px 34px rgba(26,95,208,.14);
  --sh-nav:0 6px 20px rgba(26,95,208,.06);
  --tr:200ms ease;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:system-ui,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
a{color:inherit;text-decoration:none;transition:color var(--tr);}
a:hover{color:var(--brand);}
img{max-width:100%;display:block;}
button,input{font-family:inherit;}
h1,h2,h3,h4,p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
.container{max-width:1200px;}
.num{font-variant-numeric:tabular-nums;}

/* ---------- 通用组件 ---------- */
.btn-brand,
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:var(--r-btn);font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;transition:all var(--tr);line-height:1.2;
}
.btn-brand{background:var(--brand);color:#fff;box-shadow:0 8px 20px rgba(26,95,208,.22);}
.btn-brand:hover{background:var(--brand-deep);color:#fff;transform:translateY(-2px);box-shadow:0 12px 26px rgba(14,69,168,.26);}
.btn-brand:active{transform:translateY(0);}
.btn-ghost{background:#fff;color:var(--brand);border-color:#C9D9F2;}
.btn-ghost:hover{background:var(--brand-soft-2);color:var(--brand-deep);border-color:var(--brand);}
.btn-sm{padding:10px 20px;font-size:14px;border-radius:var(--r-btn);}
.btn-line{background:transparent;border:1px solid rgba(26,95,208,.28);color:var(--brand);padding:10px 20px;border-radius:var(--r-btn);font-size:14px;font-weight:500;transition:all var(--tr);display:inline-flex;align-items:center;gap:6px;}
.btn-line:hover{border-color:var(--brand);background:#fff;}

.pill{display:inline-flex;align-items:center;height:25px;padding:0 11px;border-radius:999px;font-size:12px;font-weight:500;line-height:1;background:var(--brand-soft);color:var(--brand-deep);}
.pill-accent{background:var(--accent);color:#fff;}
.pill-line{background:#fff;border:1px solid var(--line);color:var(--sub);}

.sec{padding:96px 0;}
.sec-alt{background:var(--bg);}
.sec-white{background:#fff;}
.sec-line{border-top:1px solid var(--line-soft);}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap;}
.sec-head h2{font-size:clamp(24px,2.4vw,32px);font-weight:700;line-height:1.25;letter-spacing:-.2px;}
.sec-head p{font-size:15px;color:var(--sub);margin-top:8px;}
.sec-lead{font-size:15px;color:var(--sub);}
.sec-eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--brand);letter-spacing:.4px;margin-bottom:12px;}
.sec-eyebrow::before{content:"";width:18px;height:2px;background:var(--brand);border-radius:2px;}

.card-base{background:var(--card);border:1px solid var(--line-soft);border-radius:var(--r-card);box-shadow:var(--sh-card);transition:transform var(--tr),box-shadow var(--tr);}
.card-base:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);}
.cover{border-radius:var(--r-img);overflow:hidden;background:var(--brand-soft);}
.cover img{width:100%;height:100%;object-fit:cover;transition:transform var(--tr);}
.card-base:hover .cover img{transform:scale(1.03);}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1040;height:76px;display:flex;align-items:center;
  background:rgba(255,255,255,.55);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  backdrop-filter:blur(16px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.6);
  box-shadow:var(--sh-nav);
  transition:height .24s ease,background .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.site-header.is-stuck{height:64px;background:#fff;box-shadow:0 8px 24px rgba(26,95,208,.10);border-bottom-color:var(--line);}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;width:100%;}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:19px;letter-spacing:-.2px;color:var(--text);}
.logo:hover{color:var(--text);}
.logo-mark{width:34px;height:34px;border-radius:10px;background:var(--brand);display:flex;align-items:center;justify-content:center;flex:0 0 auto;box-shadow:0 6px 14px rgba(26,95,208,.28);}
.logo-mark svg{width:18px;height:18px;stroke:#fff;fill:none;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round;}
.logo-text{white-space:nowrap;}
.main-nav{display:flex;align-items:center;gap:26px;}
.nav-link{position:relative;font-size:15px;font-weight:500;color:var(--text);padding:6px 0;}
.nav-link::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform var(--tr);}
.nav-link:hover{color:var(--brand);}
.nav-link:hover::after,.nav-link.active::after{transform:scaleX(1);}
.nav-link.active{color:var(--brand);font-weight:600;}
.header-actions{display:flex;align-items:center;gap:12px;}
.icon-btn{width:40px;height:40px;border-radius:10px;border:1px solid rgba(26,95,208,.16);background:rgba(255,255,255,.7);display:flex;align-items:center;justify-content:center;cursor:pointer;color:var(--text);transition:all var(--tr);}
.icon-btn:hover{border-color:var(--brand);color:var(--brand);background:#fff;}
.icon-btn svg{width:19px;height:19px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}
.hamburger{display:none;width:42px;height:42px;border-radius:10px;border:1px solid rgba(26,95,208,.16);background:rgba(255,255,255,.75);cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:4px;}
.hamburger span{display:block;width:18px;height:1.8px;background:var(--text);border-radius:2px;transition:all var(--tr);}

/* 移动抽屉 */
.drawer-mask{position:fixed;inset:0;background:rgba(26,35,51,.4);opacity:0;visibility:hidden;transition:opacity .24s ease,visibility .24s ease;z-index:1050;}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(84vw,340px);background:#fff;z-index:1060;
  transform:translateX(102%);transition:transform .28s ease;display:flex;flex-direction:column;
  padding:24px 22px 28px;box-shadow:-10px 0 30px rgba(26,95,208,.12);
}
.mobile-drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px;}
.drawer-close{width:38px;height:38px;border-radius:10px;border:1px solid var(--line);background:#fff;cursor:pointer;color:var(--sub);font-size:20px;line-height:1;display:flex;align-items:center;justify-content:center;}
.drawer-nav{display:flex;flex-direction:column;gap:2px;}
.drawer-nav a{padding:14px 4px;font-size:17px;font-weight:500;border-bottom:1px solid var(--line-soft);color:var(--text);}
.drawer-nav a.active{color:var(--brand);font-weight:600;}
.drawer-foot{margin-top:auto;padding-top:20px;}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  padding:132px 0 92px;
  background:url('/assets/images/backpic/back-1.jpg') center/cover no-repeat;
  overflow:hidden;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(104deg,rgba(255,255,255,.96) 0%,rgba(255,255,255,.9) 40%,rgba(255,255,255,.52) 70%,rgba(255,255,255,.14) 100%);
}
.hero-inner{position:relative;z-index:2;}
.hero-badges{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:20px;}
.burst{display:inline-flex;align-items:center;gap:6px;background:var(--accent);color:#fff;font-size:12px;font-weight:600;padding:6px 13px;border-radius:999px;box-shadow:0 8px 18px rgba(255,107,74,.28);}
.burst svg{width:14px;height:14px;stroke:#fff;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}
.hero h1{font-size:clamp(28px,4.1vw,46px);font-weight:700;line-height:1.22;letter-spacing:-.6px;margin-bottom:16px;}
.hero h1 em{font-style:normal;color:var(--brand);}
.hero-sub{font-size:17px;color:var(--sub);max-width:560px;margin-bottom:26px;}
.hero-actions{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-bottom:34px;}
.hero-stats{display:flex;gap:38px;flex-wrap:wrap;padding-top:26px;border-top:1px solid rgba(26,95,208,.14);max-width:620px;}
.hero-stat b{display:block;font-size:26px;font-weight:700;color:var(--brand-deep);line-height:1.2;}
.hero-stat span{font-size:13px;color:var(--sub);}
.hero-intro{font-size:15px;color:var(--sub);line-height:1.85;margin-bottom:24px;max-width:600px;}
.hero-visual{position:relative;padding:12px 0 22px 18px;}
.hero-cover{border-radius:var(--r-card);overflow:hidden;box-shadow:0 20px 46px rgba(26,95,208,.18);border:6px solid #fff;background:#fff;}
.hero-cover img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.float-card{position:absolute;background:#fff;border-radius:14px;box-shadow:0 14px 30px rgba(26,95,208,.16);border:1px solid var(--line-soft);padding:12px 15px;display:flex;align-items:center;gap:10px;}
.float-card small{display:block;font-size:11px;color:var(--sub);line-height:1.4;}
.float-card strong{font-size:14px;font-weight:600;}
.float-a{left:-6px;bottom:9%;}
.float-b{right:-4px;top:5%;}
.float-dot{width:34px;height:34px;border-radius:10px;background:var(--brand-soft);display:flex;align-items:center;justify-content:center;flex:0 0 auto;}
.float-dot svg{width:17px;height:17px;stroke:var(--brand);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}

/* ---------- 卖点三连 ---------- */
.feature-tall{height:100%;padding:24px;display:flex;flex-direction:column;gap:16px;}
.feature-tall .cover img{aspect-ratio:16/9;}
.feature-tall h3{font-size:20px;font-weight:600;}
.feature-tall p{font-size:15px;color:var(--sub);}
.feature-mini{height:100%;padding:22px;display:flex;flex-direction:column;gap:12px;}
.feature-mini h3{font-size:17px;font-weight:600;}
.feature-mini p{font-size:14px;color:var(--sub);}
.ico-box{width:44px;height:44px;border-radius:12px;background:var(--brand-soft);display:flex;align-items:center;justify-content:center;}
.ico-box svg{width:22px;height:22px;stroke:var(--brand);fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}

/* ---------- 场景演示 ---------- */
.scene-media{border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-card);border:1px solid var(--line-soft);background:#fff;}
.scene-media img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.step-list{display:flex;flex-direction:column;gap:22px;margin:26px 0 28px;}
.step-item{display:flex;gap:16px;position:relative;}
.step-item::before{content:"";position:absolute;left:15px;top:38px;bottom:-22px;width:1px;background:var(--line);}
.step-item:last-child::before{display:none;}
.step-no{width:32px;height:32px;flex:0 0 auto;border-radius:50%;border:1.5px solid var(--brand);color:var(--brand);font-size:14px;font-weight:600;display:flex;align-items:center;justify-content:center;background:#fff;}
.step-item h3{font-size:17px;font-weight:600;margin-bottom:4px;}
.step-item p{font-size:14px;color:var(--sub);}

/* ---------- 分类入口磁贴 ---------- */
.tile-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.tile{display:flex;flex-direction:column;gap:12px;padding:22px;background:#fff;border:1px solid var(--line-soft);border-radius:var(--r-card);box-shadow:var(--sh-card);transition:all var(--tr);position:relative;}
.tile:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);border-color:#d6e3f8;}
.tile h3{font-size:17px;font-weight:600;}
.tile p{font-size:13px;color:var(--sub);line-height:1.6;}
.tile .tile-flag{position:absolute;top:16px;right:16px;}
.tile-ico{width:44px;height:44px;border-radius:12px;background:var(--brand-soft-2);display:flex;align-items:center;justify-content:center;}
.tile-ico svg{width:22px;height:22px;stroke:var(--brand);fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}

/* ---------- 横滑片单 ---------- */
.rail-wrap{position:relative;}
.rail{display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;padding:6px 4px 22px;scrollbar-width:none;-ms-overflow-style:none;}
.rail::-webkit-scrollbar{display:none;}
.rail-card{flex:0 0 300px;scroll-snap-align:start;background:#fff;border:1px solid var(--line-soft);border-radius:var(--r-card);box-shadow:var(--sh-card);overflow:hidden;transition:all var(--tr);}
.rail-card:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);}
.rail-thumb{position:relative;}
.rail-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.rail-flag{position:absolute;top:12px;right:12px;}
.rail-body{padding:16px 18px 18px;}
.rail-body h3{font-size:17px;font-weight:600;margin-bottom:6px;}
.rail-body p{font-size:13px;color:var(--sub);min-height:38px;}
.rail-meta{display:flex;align-items:center;gap:8px;margin-top:12px;}
.rail-hint{font-size:13px;color:var(--sub);display:inline-flex;align-items:center;gap:6px;}
.rail-hint svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}

/* ---------- 今日更新 ---------- */
.update-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px 24px;}
.update-row{display:flex;align-items:center;gap:14px;background:#fff;border:1px solid var(--line-soft);border-radius:14px;padding:14px 18px;transition:all var(--tr);}
.update-row:hover{border-color:#d6e3f8;box-shadow:var(--sh-card);transform:translateY(-2px);}
.update-time{font-size:14px;font-weight:600;color:var(--brand);flex:0 0 52px;}
.update-title{flex:1;font-size:15px;font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.update-progress{height:4px;border-radius:2px;background:var(--line);flex:0 0 64px;overflow:hidden;}
.update-progress i{display:block;height:100%;border-radius:2px;background:var(--accent);}

/* ---------- 评价 ---------- */
.quote-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.quote-card{background:#fff;border:1px solid var(--line-soft);border-radius:var(--r-card);box-shadow:var(--sh-card);padding:22px;transition:all var(--tr);}
.quote-card:nth-child(2),
.quote-card:nth-child(5){transform:translateY(18px);}
.quote-card:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);}
.quote-card:nth-child(2):hover,
.quote-card:nth-child(5):hover{transform:translateY(14px);box-shadow:var(--sh-hover);}
.quote-top{display:flex;align-items:center;gap:12px;margin-bottom:14px;}
.avatar{width:44px;height:44px;border-radius:50%;overflow:hidden;flex:0 0 auto;background:var(--brand-soft);}
.avatar img{width:100%;height:100%;object-fit:cover;}
.quote-top b{display:block;font-size:15px;font-weight:600;}
.quote-top small{font-size:12px;color:var(--sub);}
.quote-card p{font-size:14px;color:var(--text);line-height:1.8;}
.stars{display:flex;gap:3px;margin-top:14px;}
.stars svg{width:15px;height:15px;fill:var(--accent);}
.score-strip{display:flex;gap:44px;flex-wrap:wrap;margin-top:56px;padding-top:28px;border-top:1px solid var(--line);}
.score-strip div b{display:block;font-size:24px;font-weight:700;color:var(--brand-deep);line-height:1.2;}
.score-strip div span{font-size:13px;color:var(--sub);}

/* ---------- 对比 ---------- */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.compare-col{background:#fff;border:1px solid var(--line-soft);border-radius:var(--r-card);padding:24px;box-shadow:var(--sh-card);}
.compare-col.better{border-color:#c9dcfa;background:linear-gradient(180deg,#fff 0%,#F7FBFF 100%);}
.compare-col h3{font-size:18px;font-weight:600;margin-bottom:18px;display:flex;align-items:center;gap:9px;}
.compare-col.better h3{color:var(--brand-deep);}
.compare-col ul{display:flex;flex-direction:column;gap:12px;}
.compare-col li{display:flex;gap:10px;font-size:14px;color:var(--sub);line-height:1.7;}
.compare-col.better li{color:var(--text);}
.compare-col li svg{width:18px;height:18px;flex:0 0 auto;margin-top:3px;stroke-width:1.9;fill:none;stroke-linecap:round;stroke-linejoin:round;}

/* ---------- 资讯 ---------- */
.news-card{height:100%;background:#fff;border:1px solid var(--line-soft);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-card);transition:all var(--tr);}
.news-card:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);}
.news-card img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.news-body{padding:18px 20px 22px;}
.news-body h3{font-size:17px;font-weight:600;line-height:1.5;margin-bottom:8px;}
.news-body p{font-size:13px;color:var(--sub);}
.news-meta{display:flex;align-items:center;gap:10px;margin-top:14px;font-size:12px;color:var(--sub);}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px;}
.faq-item{background:#fff;border:1px solid var(--line-soft);border-radius:14px;overflow:hidden;transition:box-shadow var(--tr),border-color var(--tr);}
.faq-item.is-open{border-color:#c9dcfa;box-shadow:var(--sh-card);}
.faq-q{width:100%;background:transparent;border:0;text-align:left;padding:18px 22px;font-size:16px;font-weight:600;color:var(--text);display:flex;align-items:center;justify-content:space-between;gap:16px;cursor:pointer;}
.faq-q .chev{width:20px;height:20px;flex:0 0 auto;stroke:var(--brand);fill:none;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round;transition:transform var(--tr);}
.faq-item.is-open .chev{transform:rotate(180deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease;}
.faq-a p{padding:0 22px 20px;font-size:14px;color:var(--sub);}

/* ---------- 保障条 ---------- */
.guard-band{background:var(--brand-soft-2);border-radius:var(--r-card);padding:30px 26px;display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.guard-item{display:flex;gap:12px;align-items:flex-start;}
.guard-item svg{width:22px;height:22px;flex:0 0 auto;margin-top:3px;stroke:var(--brand);fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}
.guard-item b{display:block;font-size:15px;font-weight:600;}
.guard-item span{font-size:13px;color:var(--sub);}

/* ---------- 三步 ---------- */
.start-card{background:#fff;border:1px solid var(--line-soft);border-radius:var(--r-card);padding:26px;height:100%;box-shadow:var(--sh-card);transition:all var(--tr);}
.start-card:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);}
.start-num{font-size:40px;font-weight:700;color:transparent;-webkit-text-stroke:1.5px var(--brand);line-height:1;margin-bottom:16px;}
.start-card h3{font-size:18px;font-weight:600;margin-bottom:8px;}
.start-card p{font-size:14px;color:var(--sub);}

/* ---------- 榜单 ---------- */
.rank-list{background:#fff;border:1px solid var(--line-soft);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-card);}
.rank-row{display:flex;align-items:center;gap:16px;padding:16px 22px;border-bottom:1px solid var(--line-soft);transition:background var(--tr);}
.rank-row:last-child{border-bottom:0;}
.rank-row:hover{background:var(--brand-soft-2);}
.rank-no{width:30px;height:30px;border-radius:9px;display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:600;background:var(--brand-soft-2);color:var(--sub);flex:0 0 auto;}
.rank-no.top{background:var(--brand);color:#fff;box-shadow:0 6px 14px rgba(26,95,208,.24);}
.rank-no.top2{background:var(--accent);color:#fff;box-shadow:0 6px 14px rgba(255,107,74,.24);}
.rank-name{flex:1;font-size:15px;font-weight:500;min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.rank-bar{flex:0 0 120px;height:6px;border-radius:3px;background:var(--line);overflow:hidden;}
.rank-bar i{display:block;height:100%;background:var(--brand);border-radius:3px;}

/* ---------- 标签云 ---------- */
.tag-cloud{display:flex;flex-wrap:wrap;gap:12px;}
.tag-cloud span{display:inline-flex;align-items:center;height:34px;padding:0 16px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:14px;color:var(--sub);transition:all var(--tr);cursor:default;}
.tag-cloud span:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-soft-2);}

/* ---------- 订阅 ---------- */
.subscribe-box{background:#fff;border:1px solid var(--line-soft);border-radius:var(--r-card);box-shadow:var(--sh-card);padding:32px;display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:center;}
.subscribe-box h2{font-size:24px;font-weight:700;margin-bottom:10px;}
.subscribe-box p{font-size:14px;color:var(--sub);}
.sub-form{display:flex;gap:12px;align-items:flex-start;flex-wrap:wrap;}
.sub-form input{flex:1;min-width:200px;height:48px;border-radius:var(--r-btn);border:1px solid var(--line);padding:0 16px;font-size:15px;color:var(--text);background:#fff;transition:border-color var(--tr),box-shadow var(--tr);}
.sub-form input:focus{outline:0;border-color:var(--brand);box-shadow:0 0 0 3px rgba(26,95,208,.12);}
.sub-form input.is-error{border-color:var(--accent);box-shadow:0 0 0 3px rgba(255,107,74,.12);}
.sub-hint{font-size:12px;color:var(--sub);margin-top:10px;width:100%;}
.sub-hint.error{color:var(--accent);}
.sub-hint.ok{color:var(--brand);}

/* ---------- 收尾 CTA ---------- */
.final-cta{background:linear-gradient(180deg,#F2F7FF 0%,#E8F0FE 100%);border-radius:20px;padding:52px 40px;text-align:center;}
.final-cta h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;margin-bottom:12px;}
.final-cta p{font-size:15px;color:var(--sub);margin-bottom:26px;}

/* ---------- 页脚 ---------- */
.site-footer{background:#fff;border-top:1px solid var(--line);padding:64px 0 28px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:700;margin-bottom:14px;}
.footer-grid p{font-size:14px;color:var(--sub);line-height:1.8;}
.footer-grid h4{font-size:15px;font-weight:600;margin-bottom:16px;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{font-size:14px;color:var(--sub);}
.footer-links a:hover{color:var(--brand);}
.footer-bottom{margin-top:44px;padding-top:22px;border-top:1px solid var(--line-soft);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:var(--sub);}

/* ---------- 移动固定条 ---------- */
.mobile-bar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:1035;height:62px;background:#fff;
  border-top:1px solid var(--line);box-shadow:0 -6px 20px rgba(26,95,208,.10);
  align-items:center;justify-content:space-between;gap:12px;padding:0 16px;
}
.mobile-bar span{font-size:13px;color:var(--sub);}
.mobile-bar .btn-brand{padding:10px 18px;font-size:14px;}

/* ---------- 响应式 ---------- */
@media (min-width:1200px){
  .sec{padding:104px 0;}
}
@media (max-width:1199.98px){
  .tile-grid{grid-template-columns:repeat(2,1fr);}
  .quote-grid{grid-template-columns:repeat(2,1fr);}
  .quote-card:nth-child(2),
  .quote-card:nth-child(5){transform:none;}
  .quote-card:nth-child(2):hover,
  .quote-card:nth-child(5):hover{transform:translateY(-3px);}
}
@media (max-width:991.98px){
  .main-nav{display:none;}
  .header-actions .btn-brand{display:none;}
  .hamburger{display:flex;}
  .hero{padding:112px 0 72px;}
  .hero-visual{padding:0;margin-top:36px;}
  .hero-cover img{aspect-ratio:16/9;}
  .float-a{left:8px;bottom:-14px;}
  .float-b{right:8px;top:-14px;}
  .sec{padding:76px 0;}
  .update-grid{grid-template-columns:1fr;}
  .compare{grid-template-columns:1fr;}
  .guard-band{grid-template-columns:repeat(2,1fr);}
  .subscribe-box{grid-template-columns:1fr;padding:26px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:767.98px){
  body{padding-bottom:62px;}
  .mobile-bar{display:flex;}
  .sec{padding:60px 0;}
  .hero h1{letter-spacing:-.2px;}
  .hero-stats{gap:24px;}
  .hero-stat b{font-size:22px;}
  .tile-grid{grid-template-columns:1fr;}
  .quote-grid{grid-template-columns:1fr;}
  .rail-card{flex:0 0 248px;}
  .rank-bar{flex:0 0 64px;}
  .final-cta{padding:36px 22px;}
  .score-strip{gap:26px;}
}
@media (max-width:520px){
  .hero{padding:100px 0 56px;}
  .hero-actions .btn-brand,
  .hero-actions .btn-ghost{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .guard-band{grid-template-columns:1fr;}
  .update-time{flex:0 0 44px;font-size:13px;}
  .update-progress{display:none;}
}

/* roulang page: category1 */
:root{
 --brand:#1A5FD0;
 --brand-deep:#0E45A8;
 --brand-soft:#E8F0FE;
 --brand-soft-2:#F2F7FF;
 --accent:#FF6B4A;
 --bg:#F7F9FC;
 --card:#FFFFFF;
 --text:#1A2333;
 --sub:#5B6B82;
 --line:#E6ECF5;
 --line-soft:#EDF2FA;
 --r-card:16px;
 --r-img:12px;
 --r-btn:10px;
 --sh-card:0 8px 24px rgba(26,95,208,.08);
 --sh-hover:0 14px 34px rgba(26,95,208,.14);
 --sh-nav:0 6px 20px rgba(26,95,208,.06);
 --tr:200ms ease;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
 margin:0;
 font-family:system-ui,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
 font-size:16px;line-height:1.75;color:var(--text);background:var(--bg);
 -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
h1,h2,h3,h4{margin:0;line-height:1.25;font-weight:700;letter-spacing:-.2px;}
p{margin:0;}
a{color:inherit;text-decoration:none;transition:color var(--tr);}
a:hover{color:var(--brand);}
img{max-width:100%;display:block;}
button,input{font-family:inherit;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px;}

/* ---------- 按钮 ---------- */
.btn-brand,.btn-ghost{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;
 padding:14px 28px;border-radius:var(--r-btn);font-size:15px;font-weight:600;
 border:1px solid transparent;cursor:pointer;transition:all var(--tr);line-height:1.2;
}
.btn-brand{background:var(--brand);color:#fff;box-shadow:0 8px 20px rgba(26,95,208,.22);}
.btn-brand:hover{background:var(--brand-deep);color:#fff;transform:translateY(-2px);box-shadow:0 12px 26px rgba(14,69,168,.26);}
.btn-brand:active{transform:translateY(0);}
.btn-ghost{background:#fff;color:var(--brand);border-color:#C9D9F2;}
.btn-ghost:hover{background:var(--brand-soft-2);color:var(--brand-deep);border-color:var(--brand);}
.btn-sm{padding:10px 20px;font-size:14px;}
.btn-line{display:inline-flex;align-items:center;gap:6px;background:transparent;border:1px solid rgba(26,95,208,.28);color:var(--brand);padding:10px 20px;border-radius:var(--r-btn);font-size:14px;font-weight:500;transition:all var(--tr);cursor:pointer;}
.btn-line:hover{border-color:var(--brand);background:#fff;color:var(--brand-deep);}

/* ---------- 通用组件 ---------- */
.pill{display:inline-flex;align-items:center;height:25px;padding:0 11px;border-radius:999px;font-size:12px;font-weight:500;line-height:1;background:var(--brand-soft);color:var(--brand-deep);white-space:nowrap;}
.pill-accent{background:var(--accent);color:#fff;}
.pill-line{background:#fff;border:1px solid var(--line);color:var(--sub);}
.card-base{background:var(--card);border:1px solid var(--line-soft);border-radius:var(--r-card);box-shadow:var(--sh-card);transition:transform var(--tr),box-shadow var(--tr);}
.card-base:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);}
.sec{padding:92px 0;}
.sec-eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--brand);letter-spacing:.4px;margin-bottom:12px;}
.sec-eyebrow::before{content:"";width:18px;height:2px;background:var(--brand);border-radius:2px;}
.sec-title{font-size:clamp(23px,2.6vw,32px);font-weight:700;}
.sec-lead{font-size:15px;color:var(--sub);margin-top:12px;max-width:660px;}
.band-alt{background:#fff;}

/* ---------- 导航 ---------- */
.site-header{
 position:fixed;top:0;left:0;right:0;z-index:1040;height:76px;display:flex;align-items:center;
 background:rgba(255,255,255,.55);
 -webkit-backdrop-filter:blur(16px) saturate(140%);
 backdrop-filter:blur(16px) saturate(140%);
 border-bottom:1px solid rgba(255,255,255,.6);
 box-shadow:var(--sh-nav);
 transition:height .24s ease,background .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.site-header.is-stuck{height:64px;background:#fff;box-shadow:0 8px 24px rgba(26,95,208,.10);border-bottom-color:var(--line);}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;width:100%;}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:19px;color:var(--text);}
.logo:hover{color:var(--text);}
.logo-mark{width:34px;height:34px;border-radius:10px;background:var(--brand);display:flex;align-items:center;justify-content:center;flex:0 0 auto;box-shadow:0 6px 14px rgba(26,95,208,.28);}
.logo-mark svg{width:18px;height:18px;stroke:#fff;fill:none;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round;}
.logo-text{white-space:nowrap;}
.main-nav{display:flex;align-items:center;gap:26px;}
.nav-link{position:relative;font-size:15px;font-weight:500;color:var(--text);padding:6px 0;}
.nav-link::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform var(--tr);}
.nav-link:hover{color:var(--brand);}
.nav-link:hover::after,.nav-link.active::after{transform:scaleX(1);}
.nav-link.active{color:var(--brand);font-weight:600;}
.header-actions{display:flex;align-items:center;gap:12px;}
.icon-btn{width:40px;height:40px;border-radius:10px;border:1px solid rgba(26,95,208,.16);background:rgba(255,255,255,.7);display:flex;align-items:center;justify-content:center;cursor:pointer;color:var(--text);transition:all var(--tr);}
.icon-btn:hover{border-color:var(--brand);color:var(--brand);background:#fff;}
.icon-btn svg{width:19px;height:19px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}
.hamburger{display:none;width:42px;height:42px;border-radius:10px;border:1px solid rgba(26,95,208,.16);background:rgba(255,255,255,.75);cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:4px;}
.hamburger span{display:block;width:18px;height:1.8px;background:var(--text);border-radius:2px;transition:all var(--tr);}
.drawer-mask{position:fixed;inset:0;background:rgba(26,35,51,.42);opacity:0;visibility:hidden;transition:opacity .24s ease,visibility .24s ease;z-index:1050;}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.mobile-drawer{
 position:fixed;top:0;right:0;bottom:0;width:min(84vw,340px);background:#fff;z-index:1060;
 transform:translateX(102%);transition:transform .28s ease;display:flex;flex-direction:column;
 padding:24px 22px 28px;box-shadow:-10px 0 30px rgba(26,95,208,.12);
}
.mobile-drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px;}
.drawer-close{width:38px;height:38px;border-radius:10px;border:1px solid var(--line);background:#fff;cursor:pointer;color:var(--sub);font-size:20px;line-height:1;display:flex;align-items:center;justify-content:center;transition:all var(--tr);}
.drawer-close:hover{color:var(--brand);border-color:var(--brand);}
.drawer-nav{display:flex;flex-direction:column;gap:2px;}
.drawer-nav a{padding:14px 4px;font-size:17px;font-weight:500;border-bottom:1px solid var(--line-soft);color:var(--text);}
.drawer-nav a:hover{color:var(--brand);}
.drawer-cta{margin-top:auto;padding-top:24px;}
.drawer-cta .btn-brand{width:100%;}

/* ---------- 分类头部 ---------- */
.cat-hero{
 padding:104px 0 30px;
 background:linear-gradient(180deg,#F2F7FF 0%,#F7F9FC 100%);
 border-bottom:1px solid var(--line);
}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--sub);margin-bottom:12px;}
.crumb a{color:var(--sub);}
.crumb a:hover{color:var(--brand);}
.crumb .sep{color:#B8C6DC;}
.cat-hero h1{font-size:clamp(26px,3.4vw,36px);font-weight:700;letter-spacing:-.4px;}
.cat-desc{margin-top:10px;font-size:15px;color:var(--sub);max-width:860px;}
.cat-stats{display:flex;flex-wrap:wrap;gap:14px 40px;margin-top:18px;}
.stat{display:flex;align-items:baseline;gap:8px;}
.stat strong{font-size:22px;font-weight:700;color:var(--brand);font-variant-numeric:tabular-nums;line-height:1;}
.stat span{font-size:13px;color:var(--sub);}

/* ---------- 卡片网格 ---------- */
.video-card{display:flex;flex-direction:column;height:100%;overflow:hidden;}
.video-card .cover{position:relative;display:block;margin:12px 12px 0;border-radius:var(--r-img);overflow:hidden;aspect-ratio:16/9;background:var(--brand-soft);}
.video-card .cover img{width:100%;height:100%;object-fit:cover;transition:transform var(--tr);}
.video-card:hover .cover img{transform:scale(1.03);}
.badge-up{position:absolute;top:10px;right:10px;background:var(--accent);color:#fff;font-size:12px;font-weight:600;padding:4px 10px;border-radius:999px;line-height:1.4;box-shadow:0 6px 14px rgba(255,107,74,.28);}
.video-card .card-body{padding:16px 18px 20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-title{font-size:17px;font-weight:600;line-height:1.4;}
.card-title a:hover{color:var(--brand);}
.card-text{font-size:14px;color:var(--sub);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:auto;padding-top:4px;}
.more-wrap{display:flex;justify-content:center;margin-top:44px;}

/* ---------- 精选专题大卡 ---------- */
.feature-card{display:grid;grid-template-columns:300px 1fr;overflow:hidden;height:100%;}
.feature-cover{position:relative;min-height:220px;overflow:hidden;background:var(--brand-soft);}
.feature-cover img{width:100%;height:100%;object-fit:cover;transition:transform var(--tr);}
.feature-card:hover .feature-cover img{transform:scale(1.03);}
.feature-body{padding:26px 28px;display:flex;flex-direction:column;gap:12px;align-items:flex-start;}
.feature-body h3{font-size:19px;font-weight:600;line-height:1.4;}
.feature-body p{font-size:14px;color:var(--sub);}
.feature-body .btn-line{margin-top:auto;}

/* ---------- 观看指南 ---------- */
.guide-points{display:flex;flex-direction:column;gap:18px;margin-top:26px;}
.guide-point{display:flex;gap:14px;align-items:flex-start;}
.guide-num{flex:0 0 auto;width:30px;height:30px;border-radius:9px;border:1.5px solid rgba(26,95,208,.35);color:var(--brand);display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;font-variant-numeric:tabular-nums;}
.guide-point h4{font-size:16px;font-weight:600;margin-bottom:4px;}
.guide-point p{font-size:14px;color:var(--sub);}
.guide-figure{border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-card);background:var(--brand-soft);}
.guide-figure img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3;}
.guide-figure figcaption{font-size:13px;color:var(--sub);padding:12px 16px;background:#fff;}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px;margin-top:30px;}
.faq-item{background:#fff;border:1px solid var(--line-soft);border-radius:var(--r-card);box-shadow:var(--sh-card);overflow:hidden;transition:box-shadow var(--tr);}
.faq-item:hover{box-shadow:var(--sh-hover);}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;background:none;border:0;cursor:pointer;text-align:left;padding:20px 22px;font-size:16px;font-weight:600;color:var(--text);line-height:1.5;}
.faq-q:hover{color:var(--brand);}
.faq-arrow{flex:0 0 auto;width:20px;height:20px;stroke:var(--brand);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;transition:transform .28s ease;}
.faq-item.is-open .faq-arrow{transform:rotate(180deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s ease;}
.faq-a-inner{padding:0 22px 20px;font-size:14px;line-height:1.75;color:var(--sub);}
.faq-item.is-open .faq-a{max-height:320px;}

/* ---------- 保障条 ---------- */
.guard-band{background:var(--brand-soft-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:44px 0;}
.guard-item{display:flex;gap:14px;align-items:flex-start;}
.guard-icon{flex:0 0 auto;width:42px;height:42px;border-radius:12px;background:#fff;display:flex;align-items:center;justify-content:center;box-shadow:0 6px 16px rgba(26,95,208,.10);}
.guard-icon svg{width:20px;height:20px;stroke:var(--brand);fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}
.guard-item h4{font-size:15px;font-weight:600;}
.guard-item p{font-size:13px;color:var(--sub);margin-top:2px;}

/* ---------- 收尾 CTA ---------- */
.final-cta{
 background:linear-gradient(135deg,#E8F0FE 0%,#F2F7FF 100%);
 border:1px solid #D6E4FB;border-radius:var(--r-card);
 padding:52px 40px;text-align:center;box-shadow:var(--sh-card);
}
.final-cta h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;}
.final-cta p{margin-top:12px;font-size:15px;color:var(--sub);}
.final-cta .btn-brand{margin-top:26px;}

/* ---------- 页脚 ---------- */
.site-footer{background:#fff;border-top:1px solid var(--line);padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding-bottom:44px;}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:700;margin-bottom:14px;}
.footer-brand .logo-mark{width:32px;height:32px;border-radius:9px;}
.site-footer p{font-size:14px;color:var(--sub);line-height:1.75;}
.site-footer h4{font-size:15px;font-weight:600;margin-bottom:16px;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{font-size:14px;color:var(--sub);}
.footer-links a:hover{color:var(--brand);}
.footer-bottom{border-top:1px solid var(--line);padding:20px 0;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:13px;color:var(--sub);}

/* ---------- 移动固定转化条 ---------- */
.mobile-cta{display:none;}

@media (max-width:991.98px){
 .main-nav{display:none;}
 .hamburger{display:flex;}
 .header-actions .btn-brand{display:none;}
 .sec{padding:64px 0;}
 .feature-card{grid-template-columns:1fr;}
 .feature-cover{min-height:200px;aspect-ratio:16/9;}
 .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767.98px){
 body{padding-bottom:66px;}
 .cat-hero{padding:92px 0 26px;}
 .cat-stats{gap:10px 24px;}
 .stat strong{font-size:19px;}
 .sec{padding:56px 0;}
 .final-cta{padding:36px 22px;}
 .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px;}
 .footer-bottom{flex-direction:column;}
 .mobile-cta{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  position:fixed;left:0;right:0;bottom:0;height:62px;padding:0 16px;z-index:1035;
  background:#fff;border-top:1px solid var(--line);box-shadow:0 -6px 20px rgba(26,95,208,.10);
 }
 .mobile-cta span{font-size:13px;font-weight:500;color:var(--text);}
 .mobile-cta .btn-brand{padding:10px 18px;font-size:14px;flex:0 0 auto;}
}
@media (max-width:520px){
 .cat-hero h1{font-size:24px;}
 .sec-title{font-size:21px;}
 .card-title{font-size:16px;}
 .btn-brand,.btn-ghost{padding:12px 22px;font-size:14px;}
}

/* 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}