/* roulang page: index */
:root{
  --brand:#2F6BF6;
  --brand-dark:#1F51CC;
  --brand-soft:#EEF3FF;
  --brand-line:#D6E2FF;
  --accent:#FF7A3C;
  --accent-dark:#E8621F;
  --ok:#16A34A;
  --bg:#F6F8FC;
  --card:#FFFFFF;
  --line:#E6EBF5;
  --text:#1F2937;
  --muted:#5B6B84;
  --radius:16px;
  --radius-sm:10px;
  --radius-pill:999px;
  --shadow:0 1px 2px rgba(23,43,77,.06),0 8px 24px rgba(23,43,77,.08);
  --shadow-lg:0 2px 8px rgba(23,43,77,.10),0 18px 44px rgba(23,43,77,.16);
  --container:1200px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.7;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input{font:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--radius-pill);
  font-size:15px;font-weight:600;line-height:1;letter-spacing:.2px;
  border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,border-color .18s ease,color .18s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 6px 16px rgba(47,107,246,.28)}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-2px);box-shadow:0 10px 24px rgba(47,107,246,.34)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:#fff;color:var(--brand);border-color:var(--brand-line)}
.btn-ghost:hover{background:rgba(47,107,246,.08);border-color:var(--brand);transform:translateY(-2px)}
.btn-outline{background:#fff;color:var(--text);border-color:var(--line)}
.btn-outline:hover{border-color:var(--brand-line);background:var(--brand-soft)}
.btn-sm{padding:10px 20px;font-size:14px}

/* ============ 顶栏 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:#fff;border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 20px rgba(23,43,77,.08)}
.header-inner{display:flex;align-items:center;gap:28px;height:68px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:34px;height:34px;border-radius:11px;
  background:linear-gradient(140deg,var(--brand),#5B90FF);
  display:grid;place-items:center;color:#fff;flex-shrink:0;
  box-shadow:0 6px 14px rgba(47,107,246,.3);
}
.brand-mark svg{width:18px;height:18px}
.brand-text{font-size:18px;font-weight:700;letter-spacing:.4px}
.brand-text em{font-style:normal;color:var(--brand)}

.main-nav{display:flex;align-items:center;gap:6px;margin-left:6px;flex:1}
.nav-link{
  padding:9px 14px;border-radius:var(--radius-pill);
  font-size:15px;font-weight:500;color:var(--muted);
  transition:color .18s ease,background-color .18s ease;
}
.nav-link:hover{color:var(--brand);background:var(--brand-soft)}
.nav-link.is-active{color:var(--brand);background:var(--brand-soft);font-weight:600}
.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}

.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  border:1px solid var(--line);align-items:center;justify-content:center;
}
.nav-toggle:hover{background:var(--brand-soft);border-color:var(--brand-line)}
.nav-toggle svg{width:20px;height:20px}

.mobile-drawer{display:none;border-top:1px solid var(--line);background:#fff}
.mobile-drawer.is-open{display:block}
.drawer-inner{padding:14px 24px 20px;display:flex;flex-direction:column;gap:4px}
.drawer-link{padding:12px 14px;border-radius:12px;font-size:15px;font-weight:500;color:var(--text)}
.drawer-link:hover,.drawer-link.is-active{background:var(--brand-soft);color:var(--brand)}
.drawer-cta{margin-top:10px}

/* ============ Pill 分类条 ============ */
.pill-bar{background:#fff;border-bottom:1px solid var(--line)}
.pill-track{
  display:flex;align-items:center;gap:10px;
  max-width:var(--container);margin:0 auto;padding:14px 24px;
  overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;
  -webkit-overflow-scrolling:touch;
}
.pill-track::-webkit-scrollbar{display:none}
.chip{
  flex:0 0 auto;padding:8px 18px;border-radius:var(--radius-pill);
  background:#fff;border:1px solid var(--brand-line);color:#3A4761;
  font-size:14px;font-weight:500;white-space:nowrap;
  transition:border-color .18s ease,color .18s ease,background-color .18s ease,box-shadow .18s ease;
}
.chip:hover{border-color:var(--brand);color:var(--brand)}
.chip.is-active{background:var(--brand);border-color:var(--brand);color:#fff;box-shadow:0 6px 14px rgba(47,107,246,.26)}
.chip-more{border-style:dashed;color:var(--brand)}

/* ============ Hero ============ */
.hero{position:relative;overflow:hidden;padding:64px 0 72px}
.hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.jpg');
  background-size:cover;background-position:center;
  opacity:.16;
}
.hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(246,248,252,.5),rgba(246,248,252,.98));
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:start}

.creator-row{display:flex;align-items:center;gap:12px;margin-bottom:20px}
.creator-avatar{
  width:52px;height:52px;border-radius:50%;overflow:hidden;flex-shrink:0;
  border:3px solid #fff;box-shadow:0 6px 16px rgba(23,43,77,.14);
}
.creator-avatar img{width:100%;height:100%;object-fit:cover}
.creator-meta{display:flex;flex-direction:column;line-height:1.35}
.creator-meta strong{font-size:16px;font-weight:700}
.creator-meta span{font-size:13px;color:var(--muted)}
.verify{
  padding:4px 12px;border-radius:var(--radius-pill);font-size:12px;font-weight:600;
  background:var(--brand-soft);color:var(--brand);border:1px solid var(--brand-line);
}
.hero h1{
  font-size:40px;line-height:1.32;font-weight:700;letter-spacing:-.2px;
  margin-bottom:18px;
}
.hero-lead{font-size:16px;color:var(--muted);line-height:1.85;margin-bottom:26px;max-width:640px}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:22px}
.hero-trust{display:flex;flex-wrap:wrap;gap:20px}
.hero-trust li{
  position:relative;padding-left:20px;font-size:14px;color:var(--muted);font-weight:500;
}
.hero-trust li::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:10px;height:10px;border-radius:50%;
  background:var(--brand-soft);border:2px solid var(--brand);
}

.hero-panel{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:16px;
}
.panel-frame{
  border-radius:14px;padding:8px;
  background:linear-gradient(140deg,rgba(47,107,246,.28),rgba(47,107,246,.06));
}
.panel-shot{position:relative;border-radius:10px;overflow:hidden;aspect-ratio:16/9;background:#E9EFFB}
.panel-shot img{width:100%;height:100%;object-fit:cover}
.panel-badge{
  position:absolute;left:12px;bottom:12px;
  background:rgba(255,255,255,.94);border-radius:var(--radius-pill);
  padding:5px 12px;font-size:12px;font-weight:600;color:var(--text);
  display:flex;align-items:center;gap:6px;
}
.panel-badge .dot{width:7px;height:7px;border-radius:50%;background:var(--accent)}

.panel-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:14px}
.stat-cell{
  background:var(--brand-soft);border:1px solid var(--brand-line);
  border-radius:12px;padding:12px 10px;text-align:center;
}
.stat-cell b{
  display:block;font-size:19px;font-weight:700;color:var(--brand);
  font-variant-numeric:tabular-nums;
}
.stat-cell span{font-size:12px;color:var(--muted)}
.panel-note{
  margin-top:14px;padding-top:14px;border-top:1px dashed var(--line);
  font-size:13px;color:var(--muted);
}

/* ============ 通用板块 ============ */
.section{padding:72px 0}
.section-head{max-width:760px;margin-bottom:36px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--brand);
  background:var(--brand-soft);border:1px solid var(--brand-line);
  padding:5px 14px;border-radius:var(--radius-pill);margin-bottom:14px;
}
.section-title{
  font-size:28px;line-height:1.4;font-weight:700;margin-bottom:12px;
  position:relative;padding-left:16px;
}
.section-title::before{
  content:"";position:absolute;left:0;top:8px;bottom:8px;width:4px;
  border-radius:4px;background:var(--brand);
}
.section-desc{font-size:15px;color:var(--muted);line-height:1.8}

/* ============ 指标条 ============ */
.metrics{
  display:grid;grid-template-columns:repeat(4,1fr);gap:16px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:26px 20px;
}
.metric{text-align:center;padding:6px 10px;border-right:1px dashed var(--line)}
.metric:last-child{border-right:0}
.metric-num{
  font-size:30px;font-weight:700;color:var(--brand);
  font-variant-numeric:tabular-nums;line-height:1.2;
}
.metric-num small{font-size:15px;font-weight:600;margin-left:2px}
.metric-label{font-size:13px;color:var(--muted);margin-top:6px}

/* ============ 卡片 ============ */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:24px;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);border-color:var(--brand-line)}
.card-icon{
  width:44px;height:44px;border-radius:13px;display:grid;place-items:center;
  background:var(--brand-soft);color:var(--brand);margin-bottom:16px;
}
.card-icon svg{width:22px;height:22px}
.card-title{font-size:18px;font-weight:700;margin-bottom:10px;line-height:1.45}
.card-text{font-size:14px;color:var(--muted);line-height:1.8}

/* ============ 场景演示 ============ */
.split{display:grid;grid-template-columns:1fr 1.05fr;gap:44px;align-items:center}
.steps{display:flex;flex-direction:column;gap:18px}
.step{display:flex;gap:14px;align-items:flex-start}
.step-num{
  width:32px;height:32px;border-radius:50%;flex-shrink:0;
  display:grid;place-items:center;font-size:14px;font-weight:700;
  background:#fff;border:2px solid var(--brand);color:var(--brand);
}
.step h4{font-size:16px;font-weight:700;margin-bottom:4px}
.step p{font-size:14px;color:var(--muted);line-height:1.75}

.preview{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:16px;
}
.preview-img{position:relative;border-radius:12px;overflow:hidden;aspect-ratio:16/9;background:#E9EFFB}
.preview-img img{width:100%;height:100%;object-fit:cover}
.play-dot{
  position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  width:56px;height:56px;border-radius:50%;
  background:var(--accent);display:grid;place-items:center;
  box-shadow:0 10px 26px rgba(255,122,60,.42);
}
.play-dot::after{
  content:"";width:0;height:0;margin-left:4px;
  border-left:16px solid #fff;border-top:10px solid transparent;border-bottom:10px solid transparent;
}
.timecode{
  position:absolute;right:12px;bottom:12px;
  background:rgba(31,41,55,.78);color:#fff;font-size:12px;
  padding:4px 10px;border-radius:8px;font-variant-numeric:tabular-nums;
}
.progress{height:6px;border-radius:999px;background:var(--line);margin-top:16px;overflow:hidden}
.progress-fill{height:100%;width:62%;border-radius:999px;background:linear-gradient(90deg,var(--brand),var(--accent))}
.preview-meta{display:flex;justify-content:space-between;margin-top:10px;font-size:13px;color:var(--muted)}

/* ============ 能力矩阵 ============ */
.bento{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.bento-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:24px;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.bento-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);border-color:var(--brand-line)}
.bento-card.is-wide{grid-column:span 2;display:flex;gap:20px;align-items:center}
.bento-card.is-wide .bento-icon{flex-shrink:0}
.bento-icon{
  width:42px;height:42px;border-radius:12px;display:grid;place-items:center;
  background:var(--brand-soft);color:var(--brand);margin-bottom:14px;
}
.bento-card.is-wide .bento-icon{margin-bottom:0}
.bento-icon svg{width:20px;height:20px}
.bento-card h3{font-size:17px;font-weight:700;margin-bottom:8px}
.bento-card p{font-size:14px;color:var(--muted);line-height:1.78}

/* ============ 时间轴 ============ */
.timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:0;position:relative;margin-top:12px}
.timeline::before{
  content:"";position:absolute;left:6%;right:6%;top:19px;height:2px;
  background:linear-gradient(90deg,var(--brand-line),var(--brand),var(--brand-line));
}
.timeline-item{position:relative;padding:0 18px;text-align:center}
.timeline-dot{
  width:40px;height:40px;border-radius:50%;margin:0 auto 16px;
  background:#fff;border:2px solid var(--brand);color:var(--brand);
  display:grid;place-items:center;font-weight:700;font-size:15px;
  position:relative;z-index:2;
}
.timeline-item h4{font-size:16px;font-weight:700;margin-bottom:8px}
.timeline-item p{font-size:13.5px;color:var(--muted);line-height:1.75}

/* ============ 片单轨道 ============ */
.rail{display:grid;grid-template-columns:repeat(6,1fr);gap:18px}
.poster-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.poster-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);border-color:var(--brand-line)}
.poster-img{aspect-ratio:3/4;overflow:hidden;background:#E9EFFB}
.poster-img img{width:100%;height:100%;object-fit:cover}
.poster-body{padding:14px 16px 18px}
.poster-title{font-size:15px;font-weight:700;line-height:1.5;margin-bottom:8px}
.poster-meta{font-size:12.5px;color:var(--muted);display:flex;flex-wrap:wrap;gap:8px}
.poster-meta span{
  background:var(--brand-soft);color:var(--brand);border-radius:999px;padding:2px 10px;
}

/* ============ 用户评价 ============ */
.quotes{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;align-items:start}
.quote{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:24px;
}
.quote:nth-child(2){margin-top:26px}
.quote:nth-child(3){margin-top:-8px}
.quote-top{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.quote-avatar{width:44px;height:44px;border-radius:50%;overflow:hidden;flex-shrink:0}
.quote-avatar img{width:100%;height:100%;object-fit:cover}
.quote-name{font-size:15px;font-weight:700}
.quote-role{font-size:12.5px;color:var(--muted)}
.quote-text{font-size:14.5px;line-height:1.85;color:#33405C}
.quote-tag{
  display:inline-block;margin-top:14px;font-size:12px;font-weight:600;
  color:var(--accent-dark);background:#FFF2EA;border-radius:999px;padding:3px 12px;
}

/* ============ 对比表 ============ */
.compare-wrap{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);overflow:hidden;
}
.compare-table{width:100%;border-collapse:collapse}
.compare-table th,.compare-table td{
  padding:18px 22px;text-align:left;font-size:14.5px;border-bottom:1px solid var(--line);
  vertical-align:top;
}
.compare-table thead th{
  font-size:14px;font-weight:700;background:var(--brand-soft);color:var(--brand);
}
.compare-table thead th:first-child{color:var(--muted);background:#F9FBFF}
.compare-table tbody tr:last-child td{border-bottom:0}
.compare-table tbody tr:hover{background:#FBFCFF}
.compare-table td:first-child{font-weight:600;color:var(--text);width:20%}
.compare-table td.good{color:#14532D;background:rgba(22,163,74,.05);font-weight:500}
.compare-table td.plain{color:var(--muted)}

/* ============ 资讯 ============ */
.news-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:24px}
.news-feature{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);overflow:hidden;
  transition:transform .2s ease,box-shadow .2s ease;
}
.news-feature:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}
.news-feature-img{aspect-ratio:16/9;overflow:hidden;background:#E9EFFB}
.news-feature-img img{width:100%;height:100%;object-fit:cover}
.news-feature-body{padding:22px 24px 26px}
.news-feature-body h3{font-size:20px;font-weight:700;line-height:1.5;margin:10px 0}
.news-feature-body p{font-size:14px;color:var(--muted);line-height:1.8}
.news-list{display:flex;flex-direction:column;gap:14px}
.news-item{
  display:flex;gap:16px;align-items:center;
  background:#fff;border:1px solid var(--line);border-radius:14px;
  padding:16px 18px;box-shadow:var(--shadow);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.news-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);border-color:var(--brand-line)}
.news-thumb{width:74px;height:74px;border-radius:12px;overflow:hidden;flex-shrink:0;background:#E9EFFB}
.news-thumb img{width:100%;height:100%;object-fit:cover}
.news-item h4{font-size:15.5px;font-weight:700;line-height:1.55;margin-bottom:6px}
.news-item span{font-size:12.5px;color:var(--muted)}

/* ============ 入口矩阵 ============ */
.channel-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.channel-card{
  display:block;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:22px;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.channel-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);border-color:var(--brand-line)}
.channel-card .tag{
  display:inline-block;font-size:12px;font-weight:600;color:var(--brand);
  background:var(--brand-soft);border-radius:999px;padding:3px 12px;margin-bottom:12px;
}
.channel-card h3{font-size:17px;font-weight:700;margin-bottom:8px}
.channel-card p{font-size:13.5px;color:var(--muted);line-height:1.75}
.channel-card.is-primary{background:linear-gradient(160deg,#FFFFFF,#F3F7FF);border-color:var(--brand-line)}
.channel-card.is-primary .tag{background:var(--brand);color:#fff}

/* ============ 设备 ============ */
.device-row{
  display:grid;grid-template-columns:repeat(4,1fr);gap:18px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:26px;
}
.device-item{display:flex;flex-direction:column;align-items:center;text-align:center;gap:10px}
.device-item .bento-icon{margin-bottom:0}
.device-item strong{font-size:15px;font-weight:700}
.device-item span{font-size:13px;color:var(--muted);line-height:1.7}

/* ============ 更新日志 ============ */
.log-list{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:8px 24px;
}
.log-item{
  display:flex;gap:18px;padding:18px 0;border-bottom:1px dashed var(--line);align-items:baseline;
}
.log-item:last-child{border-bottom:0}
.log-date{font-size:13px;color:var(--brand);font-weight:700;font-variant-numeric:tabular-nums;flex-shrink:0;width:76px}
.log-text{font-size:14.5px;color:var(--muted);line-height:1.75}

/* ============ FAQ ============ */
.faq{max-width:900px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:20px 44px 20px 16px;position:relative;
  font-size:16px;font-weight:600;line-height:1.6;border-left:3px solid transparent;
  transition:color .18s ease,border-color .18s ease,background-color .18s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";position:absolute;right:14px;top:50%;transform:translateY(-50%);
  font-size:22px;font-weight:400;color:var(--brand);line-height:1;
}
.faq-item[open] summary{color:var(--brand);border-left-color:var(--brand);background:rgba(47,107,246,.04)}
.faq-item[open] summary::after{content:"–"}
.faq-item summary:hover{color:var(--brand)}
.faq-body{padding:0 44px 22px 16px;font-size:14.5px;color:var(--muted);line-height:1.85}

/* ============ 保障条 ============ */
.assurance{
  display:grid;grid-template-columns:repeat(4,1fr);gap:16px;
  background:#F3F7FF;border:1px solid var(--brand-line);
  border-radius:var(--radius);padding:24px;
}
.assurance-item{display:flex;gap:12px;align-items:flex-start}
.assurance-item svg{width:20px;height:20px;color:var(--ok);flex-shrink:0;margin-top:3px}
.assurance-item strong{display:block;font-size:15px;font-weight:700;margin-bottom:4px}
.assurance-item span{font-size:13px;color:var(--muted);line-height:1.7}

/* ============ 收尾 CTA ============ */
.cta-panel{
  position:relative;overflow:hidden;
  background:#fff;border:1px solid var(--brand-line);border-radius:20px;
  box-shadow:var(--shadow-lg);padding:52px 48px;
}
.cta-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-4.jpg');
  background-size:cover;background-position:center;opacity:.10;
}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center}
.cta-panel h2{font-size:28px;font-weight:700;line-height:1.45;margin-bottom:14px}
.cta-panel p{font-size:15px;color:var(--muted);line-height:1.85}
.cta-form{display:flex;gap:12px;flex-wrap:wrap}
.cta-form .input{
  flex:1 1 220px;min-width:0;padding:14px 18px;border-radius:var(--radius-sm);
  border:1px solid var(--line);background:#fff;font-size:15px;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.cta-form .input::placeholder{color:#9AA7BE}
.cta-form .input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(47,107,246,.14)}
.form-hint{margin-top:12px;font-size:12.5px;color:var(--muted)}

/* ============ 页脚 ============ */
.site-footer{background:#fff;border-top:1px solid var(--line);margin-top:72px}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:36px;
  padding:56px 0 34px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-about{font-size:14px;color:var(--muted);line-height:1.85;max-width:340px}
.footer-title{font-size:15px;font-weight:700;margin-bottom:16px}
.footer-list li{margin-bottom:10px}
.footer-list a,.footer-list span{font-size:14px;color:var(--muted);transition:color .18s ease}
.footer-list a:hover{color:var(--brand)}
.footer-bottom{
  border-top:1px solid var(--line);padding:20px 0 26px;
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:var(--muted);
}

/* ============ 底部固定转化条 ============ */
.float-bar{
  position:fixed;right:24px;bottom:24px;z-index:90;
  display:flex;align-items:center;gap:14px;
  background:#fff;border:1px solid var(--brand-line);border-radius:var(--radius-pill);
  box-shadow:var(--shadow-lg);padding:12px 14px 12px 22px;
  opacity:0;visibility:hidden;transform:translateY(14px);
  transition:opacity .25s ease,transform .25s ease,visibility .25s ease;
  max-width:calc(100vw - 48px);
}
.float-bar.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.float-text{font-size:14px;color:var(--text);font-weight:500;white-space:nowrap}
.float-close{
  width:30px;height:30px;border-radius:50%;display:grid;place-items:center;
  color:var(--muted);background:var(--bg);flex-shrink:0;
  transition:background-color .18s ease,color .18s ease;
}
.float-close:hover{background:var(--brand-soft);color:var(--brand)}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .rail{grid-template-columns:repeat(3,1fr)}
  .channel-grid{grid-template-columns:repeat(3,1fr)}
}

@media (max-width:991px){
  .header-inner{height:62px}
  .main-nav{display:none}
  .nav-toggle{display:flex}
  .header-actions .btn{display:none}
  .hero{padding:48px 0 56px}
  .hero-inner{grid-template-columns:1fr;gap:34px}
  .hero h1{font-size:32px}
  .section{padding:56px 0}
  .section-title{font-size:24px}
  .metrics{grid-template-columns:repeat(2,1fr)}
  .metric:nth-child(2){border-right:0}
  .grid-3{grid-template-columns:1fr}
  .split{grid-template-columns:1fr;gap:30px}
  .bento{grid-template-columns:repeat(2,1fr)}
  .bento-card.is-wide{grid-column:span 2;flex-direction:column;align-items:flex-start}
  .timeline{grid-template-columns:1fr;gap:26px;margin-top:0}
  .timeline::before{left:20px;right:auto;top:12px;bottom:12px;width:2px;height:auto;
    background:linear-gradient(180deg,var(--brand-line),var(--brand),var(--brand-line));}
  .timeline-item{display:flex;gap:16px;text-align:left;padding:0}
  .timeline-item .timeline-dot{margin:0}
  .rail{grid-template-columns:repeat(2,1fr)}
  .quotes{grid-template-columns:1fr}
  .quote:nth-child(2),.quote:nth-child(3){margin-top:0}
  .news-grid{grid-template-columns:1fr}
  .channel-grid{grid-template-columns:repeat(2,1fr)}
  .device-row{grid-template-columns:repeat(2,1fr);gap:22px}
  .assurance{grid-template-columns:repeat(2,1fr)}
  .cta-panel{padding:38px 30px}
  .cta-inner{grid-template-columns:1fr;gap:26px}
  .cta-panel h2{font-size:23px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;padding:44px 0 26px}

  /* 对比表转堆叠 */
  .compare-table thead{display:none}
  .compare-table,.compare-table tbody,.compare-table tr,.compare-table td{display:block;width:100%}
  .compare-table tr{border-bottom:1px solid var(--line);padding:8px 0}
  .compare-table tr:last-child{border-bottom:0}
  .compare-table td{border-bottom:0;padding:10px 22px}
  .compare-table td:first-child{width:auto;font-size:13px;color:var(--muted);font-weight:600;letter-spacing:.4px}
  .compare-table td.good::before{content:"看片视频：";font-weight:700;color:#14532D}
  .compare-table td.plain::before{content:"常见方式：";font-weight:700;color:var(--muted)}
}

@media (max-width:767px){
  .container{padding:0 16px}
  .pill-track{padding:12px 16px}
  .hero h1{font-size:27px;line-height:1.4}
  .hero-lead{font-size:15px}
  .hero-cta .btn{flex:1 1 100%}
  .metrics{padding:18px 12px;gap:10px}
  .metric-num{font-size:24px}
  .section{padding:48px 0}
  .section-title{font-size:22px}
  .rail{grid-template-columns:1fr 1fr}
  .channel-grid{grid-template-columns:1fr}
  .device-row{grid-template-columns:1fr;text-align:left}
  .device-item{align-items:flex-start;text-align:left;flex-direction:row;gap:14px}
  .assurance{grid-template-columns:1fr;padding:20px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-about{max-width:none}
  .footer-bottom{flex-direction:column;gap:6px}
  .cta-panel{padding:28px 20px;border-radius:16px}
  .float-bar{
    left:0;right:0;bottom:0;border-radius:0;border-left:0;border-right:0;border-bottom:0;
    padding:12px 16px calc(12px + env(safe-area-inset-bottom));
    justify-content:space-between;max-width:none;
  }
  .float-text{font-size:13.5px;white-space:normal}
}

@media (max-width:480px){
  .hero h1{font-size:24px}
  .rail{grid-template-columns:1fr}
  .bento{grid-template-columns:1fr}
  .bento-card.is-wide{grid-column:span 1}
  .metrics{grid-template-columns:1fr}
  .metric{border-right:0;border-bottom:1px dashed var(--line);padding-bottom:12px}
  .metric:last-child{border-bottom:0}
  .news-item{flex-direction:column;align-items:flex-start}
  .news-thumb{width:100%;height:150px}
  .cta-form .btn{flex:1 1 100%}
}

/* roulang page: category1 */
:root{
  --brand:#2F6BF6;
  --brand-dark:#1F51CC;
  --brand-soft:#EEF3FF;
  --brand-line:#D6E2FF;
  --accent:#FF7A3C;
  --accent-dark:#E8621F;
  --ok:#16A34A;
  --bg:#F6F8FC;
  --card:#FFFFFF;
  --line:#E6EBF5;
  --text:#1F2937;
  --muted:#5B6B84;
  --radius:16px;
  --radius-sm:10px;
  --radius-pill:999px;
  --shadow:0 1px 2px rgba(23,43,77,.06),0 8px 24px rgba(23,43,77,.08);
  --shadow-lg:0 2px 8px rgba(23,43,77,.10),0 18px 44px rgba(23,43,77,.16);
  --container:1200px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;line-height:1.7;color:var(--text);background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,select{font:inherit}
h1,h2,h3,h4{margin:0}
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{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--radius-pill);
  font-size:15px;font-weight:600;line-height:1;letter-spacing:.2px;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,border-color .18s ease,color .18s ease;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 6px 16px rgba(47,107,246,.28)}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-2px);box-shadow:0 10px 24px rgba(47,107,246,.34)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:#fff;color:var(--brand);border-color:var(--brand-line)}
.btn-ghost:hover{background:rgba(47,107,246,.08);border-color:var(--brand);transform:translateY(-2px)}
.btn-outline{background:#fff;color:var(--text);border-color:var(--line)}
.btn-outline:hover{border-color:var(--brand-line);background:var(--brand-soft);transform:translateY(-2px)}
.btn-sm{padding:10px 20px;font-size:14px}
.btn-block{width:100%}

/* ============ 顶栏 ============ */
.site-header{position:sticky;top:0;z-index:80;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow .2s ease}
.site-header.is-scrolled{box-shadow:0 6px 20px rgba(23,43,77,.08)}
.header-inner{display:flex;align-items:center;gap:24px;height:68px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:34px;height:34px;border-radius:11px;background:linear-gradient(140deg,var(--brand),#5B90FF);
  display:grid;place-items:center;color:#fff;flex-shrink:0;box-shadow:0 6px 14px rgba(47,107,246,.3);
}
.brand-mark svg{width:18px;height:18px}
.brand-text{font-size:18px;font-weight:700;letter-spacing:.4px}
.brand-text em{font-style:normal;color:var(--brand)}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:6px;flex:1}
.nav-link{padding:9px 14px;border-radius:var(--radius-pill);font-size:15px;font-weight:500;color:var(--muted);transition:color .18s ease,background-color .18s ease}
.nav-link:hover{color:var(--brand);background:var(--brand-soft)}
.nav-link.is-active{color:var(--brand);background:var(--brand-soft);font-weight:600}
.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.nav-toggle{display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);align-items:center;justify-content:center}
.nav-toggle:hover{background:var(--brand-soft);border-color:var(--brand-line)}
.nav-toggle svg{width:20px;height:20px}
.mobile-drawer{display:none;border-top:1px solid var(--line);background:#fff}
.mobile-drawer.is-open{display:block}
.drawer-inner{padding:14px 24px 20px;display:flex;flex-direction:column;gap:4px}
.drawer-link{padding:12px 14px;border-radius:12px;font-size:15px;font-weight:500;color:var(--text)}
.drawer-link:hover,.drawer-link.is-active{background:var(--brand-soft);color:var(--brand)}
.drawer-cta{margin-top:10px}

/* ============ Pill 分类条 ============ */
.pill-bar{background:#fff;border-bottom:1px solid var(--line)}
.pill-track{
  display:flex;align-items:center;gap:10px;max-width:var(--container);margin:0 auto;padding:14px 24px;
  overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;-webkit-overflow-scrolling:touch;
}
.pill-track::-webkit-scrollbar{display:none}
.chip{
  flex:0 0 auto;padding:8px 18px;border-radius:var(--radius-pill);background:#fff;
  border:1px solid var(--brand-line);color:#3A4761;font-size:14px;font-weight:500;white-space:nowrap;
  transition:border-color .18s ease,color .18s ease,background-color .18s ease,box-shadow .18s ease;
}
.chip:hover{border-color:var(--brand);color:var(--brand)}
.chip.is-active{background:var(--brand);border-color:var(--brand);color:#fff;box-shadow:0 6px 14px rgba(47,107,246,.26)}

/* ============ 分类头部 ============ */
.cat-hero{background:var(--brand-soft);border-bottom:1px solid var(--brand-line);padding:34px 0 38px}
.cat-hero-inner{
  border-left:6px solid var(--brand);padding:4px 0 4px 22px;background:transparent;
}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:14px;flex-wrap:wrap}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb span{color:#A8B4C9}
.breadcrumb em{font-style:normal;color:var(--text);font-weight:600}
.cat-hero h1{font-size:32px;line-height:1.35;font-weight:700;letter-spacing:-.2px;margin-bottom:12px}
.cat-lead{font-size:15px;color:var(--muted);line-height:1.85;max-width:860px}
.cat-facts{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.fact-pill{
  display:inline-flex;align-items:center;gap:6px;background:#fff;border:1px solid var(--brand-line);
  border-radius:var(--radius-pill);padding:6px 14px;font-size:13px;font-weight:500;color:#3A4761;
}
.fact-pill b{color:var(--brand);font-variant-numeric:tabular-nums;font-weight:700}

/* ============ 板块通用 ============ */
.section{padding:52px 0 0}
.section:last-of-type{padding-bottom:64px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:24px;flex-wrap:wrap}
.section-head h2{font-size:24px;font-weight:700;line-height:1.4;position:relative;padding-left:14px}
.section-head h2::before{content:"";position:absolute;left:0;top:8px;bottom:8px;width:4px;border-radius:4px;background:var(--brand)}
.section-note{font-size:14px;color:var(--muted)}
.section-sub{font-size:15px;color:var(--muted);margin-top:8px;line-height:1.8}

/* ============ 筛选条 ============ */
.filter-bar{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);
  padding:18px 20px;display:flex;flex-direction:column;gap:14px;
}
.filter-row{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.filter-label{font-size:13px;font-weight:600;color:var(--muted);min-width:48px}
.filter-chip{
  padding:7px 16px;border-radius:var(--radius-pill);background:#fff;border:1px solid var(--line);
  color:#3A4761;font-size:13px;font-weight:500;
  transition:border-color .18s ease,color .18s ease,background-color .18s ease,box-shadow .18s ease;
}
.filter-chip:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-soft)}
.filter-chip.is-on{background:var(--brand);border-color:var(--brand);color:#fff;box-shadow:0 5px 12px rgba(47,107,246,.24)}
.filter-sort{margin-left:auto;display:flex;align-items:center;gap:10px}
.filter-sort select{
  padding:9px 14px;border-radius:var(--radius-sm);border:1px solid var(--line);background:#fff;
  color:var(--text);font-size:14px;cursor:pointer;transition:border-color .18s ease,box-shadow .18s ease;
}
.filter-sort select:hover{border-color:var(--brand-line)}
.filter-sort select:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(47,107,246,.14);outline:none}

/* ============ 条目卡片 ============ */
.card-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.v-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  box-shadow:var(--shadow);display:flex;flex-direction:column;
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.v-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);border-color:var(--brand-line)}
.v-cover{position:relative;aspect-ratio:16/9;background:#E9EFFB;overflow:hidden}
.v-cover img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.v-card:hover .v-cover img{transform:scale(1.04)}
.quality-tag{
  position:absolute;left:10px;top:10px;background:var(--accent);color:#fff;
  font-size:12px;font-weight:700;padding:3px 9px;border-radius:var(--radius-pill);letter-spacing:.4px;
}
.cover-time{
  position:absolute;right:10px;bottom:10px;background:rgba(31,41,55,.76);color:#fff;
  font-size:12px;padding:3px 8px;border-radius:6px;font-variant-numeric:tabular-nums;
}
.v-body{padding:18px 18px 20px;display:flex;flex-direction:column;gap:8px;flex:1}
.v-title{font-size:17px;font-weight:700;line-height:1.45}
.v-title:hover{color:var(--brand)}
.v-meta{display:flex;flex-wrap:wrap;gap:10px;font-size:12.5px;color:var(--muted);font-variant-numeric:tabular-nums}
.v-meta span{display:inline-flex;align-items:center;gap:5px}
.v-meta span::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--brand-line)}
.v-desc{
  font-size:13.5px;color:var(--muted);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.more-row{padding-top:28px;display:flex;flex-direction:column;align-items:center;gap:12px;text-align:center}
.more-row .hint{font-size:13px;color:var(--muted)}

/* ============ 编辑精选 ============ */
.pick-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.pick-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  box-shadow:var(--shadow);display:flex;flex-direction:column;
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.pick-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);border-color:var(--brand-line)}
.pick-cover{position:relative;aspect-ratio:16/9;background:#E9EFFB;overflow:hidden}
.pick-cover img{width:100%;height:100%;object-fit:cover}
.pick-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.pick-tag{
  align-self:flex-start;font-size:12px;font-weight:600;color:var(--brand);
  background:var(--brand-soft);border:1px solid var(--brand-line);border-radius:var(--radius-pill);padding:4px 12px;
}
.pick-body h3{font-size:18px;font-weight:700;line-height:1.5}
.pick-body h3:hover{color:var(--brand)}
.pick-body p{font-size:14px;color:var(--muted);line-height:1.75}
.pick-more{margin-top:auto;font-size:13.5px;font-weight:600;color:var(--brand);display:inline-flex;align-items:center;gap:6px}

/* ============ 观看指南 ============ */
.guide-wrap{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);
  padding:26px 28px;
}
.guide-list{display:grid;gap:18px}
.guide-item{display:flex;gap:16px;align-items:flex-start;padding-bottom:18px;border-bottom:1px dashed var(--line)}
.guide-item:last-child{padding-bottom:0;border-bottom:0}
.guide-num{
  flex:0 0 auto;width:34px;height:34px;border-radius:11px;background:var(--brand-soft);
  color:var(--brand);font-weight:700;display:grid;place-items:center;font-size:15px;
  font-variant-numeric:tabular-nums;
}
.guide-item h3{font-size:16px;font-weight:700;margin-bottom:6px}
.guide-item p{font-size:14px;color:var(--muted);line-height:1.8}

/* ============ FAQ ============ */
.faq{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:last-child{border-bottom:0}
.faq-q{
  list-style:none;cursor:pointer;position:relative;padding:18px 52px 18px 22px;
  font-size:16px;font-weight:600;line-height:1.6;transition:background-color .18s ease,color .18s ease;
}
.faq-q::-webkit-details-marker{display:none}
.faq-q:hover{color:var(--brand);background:#FAFCFF}
.faq-q::after{
  content:"+";position:absolute;right:22px;top:50%;transform:translateY(-50%);
  font-size:20px;font-weight:600;color:var(--brand);line-height:1;
}
.faq-item[open] .faq-q{background:var(--brand-soft);color:var(--brand-dark);box-shadow:inset 4px 0 0 var(--brand)}
.faq-item[open] .faq-q::after{content:"−"}
.faq-a{padding:4px 24px 20px 26px;color:var(--muted);font-size:14.5px;line-height:1.85;box-shadow:inset 4px 0 0 var(--brand-line)}

/* ============ 相关专题 ============ */
.topic-wrap{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);
  padding:12px 24px;
}
.topic-item{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:18px 0;border-bottom:1px solid var(--line)}
.topic-item:last-child{border-bottom:0}
.topic-item h3{font-size:16px;font-weight:600;line-height:1.6}
.topic-item h3:hover{color:var(--brand)}
.topic-item p{font-size:13.5px;color:var(--muted);margin-top:5px}
.topic-arrow{flex:0 0 auto;color:var(--brand);font-size:14px;font-weight:600}

/* ============ 收尾 CTA ============ */
.cta-band{margin-top:56px;padding:0 0 72px}
.cta-inner{
  position:relative;overflow:hidden;border-radius:24px;border:1px solid var(--brand-line);
  background:#fff;box-shadow:var(--shadow);padding:40px 40px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-inner::before{
  content:"";position:absolute;inset:0;background-image:url('/assets/images/backpic/back-4.jpg');
  background-size:cover;background-position:center;opacity:.12;
}
.cta-inner::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(255,255,255,.94),rgba(238,243,255,.86));
}
.cta-text,.cta-actions{position:relative;z-index:2}
.cta-text h2{font-size:24px;font-weight:700;margin-bottom:10px}
.cta-text p{font-size:15px;color:var(--muted);max-width:560px;line-height:1.8}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ============ 页脚 ============ */
.site-footer{background:#fff;border-top:1px solid var(--line);padding:56px 0 0;margin-top:8px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:40px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand .brand-mark{width:32px;height:32px;border-radius:10px}
.footer-brand .brand-text{font-size:17px}
.footer-about{font-size:13.5px;color:var(--muted);line-height:1.85;max-width:340px}
.footer-title{font-size:15px;font-weight:700;margin-bottom:16px}
.footer-list{display:grid;gap:10px}
.footer-list a,.footer-list span{font-size:13.5px;color:var(--muted);transition:color .18s ease}
.footer-list a:hover{color:var(--brand)}
.footer-bottom{
  border-top:1px solid var(--line);padding:20px 0;display:flex;justify-content:space-between;
  gap:14px;flex-wrap:wrap;font-size:13px;color:var(--muted);
}

/* ============ 底部固定转化条 ============ */
.sticky-cta{
  position:fixed;right:24px;bottom:24px;z-index:90;
  opacity:0;visibility:hidden;transform:translateY(14px);
  transition:opacity .25s ease,transform .25s ease,visibility .25s ease;
}
.sticky-cta.is-visible{opacity:1;visibility:visible;transform:none}
.sticky-cta.is-hidden{display:none}
.sticky-inner{
  display:flex;align-items:center;gap:14px;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-pill);box-shadow:var(--shadow-lg);padding:10px 12px 10px 22px;
}
.sticky-inner p{font-size:14px;font-weight:500;color:var(--text);white-space:nowrap}
.sticky-close{
  width:30px;height:30px;border-radius:50%;background:var(--bg);color:var(--muted);
  font-size:18px;line-height:1;display:grid;place-items:center;transition:background-color .18s ease,color .18s ease;
}
.sticky-close:hover{background:var(--brand-soft);color:var(--brand)}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .card-grid{grid-template-columns:repeat(3,1fr)}
}
@media (max-width:991px){
  .container{padding:0 20px}
  .cat-hero h1{font-size:27px}
  .card-grid{grid-template-columns:repeat(2,1fr)}
  .pick-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .section{padding-top:48px}
  .cta-inner{padding:32px 28px}
}
@media (max-width:767px){
  .main-nav{display:none}
  .nav-toggle{display:flex}
  .header-actions .btn{display:none}
  .header-inner{height:62px;gap:14px}
  .pill-track{padding:12px 16px}
  .container{padding:0 16px}
  .cat-hero{padding:26px 0 30px}
  .cat-hero-inner{padding-left:16px;border-left-width:4px}
  .cat-hero h1{font-size:23px}
  .cat-lead{font-size:14.5px}
  .section{padding-top:42px}
  .section-head h2{font-size:20px}
  .card-grid{grid-template-columns:1fr;gap:18px}
  .filter-sort{margin-left:0;width:100%;justify-content:space-between}
  .cta-inner{flex-direction:column;align-items:flex-start;padding:26px 20px;gap:20px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .guide-wrap{padding:20px}
  .topic-wrap{padding:6px 18px}
  .sticky-cta{left:0;right:0;bottom:0;padding:0}
  .sticky-inner{
    border-radius:0;border-left:0;border-right:0;border-bottom:0;
    padding:12px 16px calc(12px + env(safe-area-inset-bottom));
    justify-content:space-between;gap:10px;
  }
  .sticky-inner p{font-size:13px;white-space:normal}
}
@media (max-width:480px){
  .cat-hero h1{font-size:21px}
  .v-title{font-size:16px}
  .btn{padding:12px 20px;font-size:14px}
  .fact-pill{font-size:12px;padding:5px 12px}
}