/* roulang page: index */
:root{
  --primary:#0B5A72;
  --primary-light:#2E8FB5;
  --primary-pale:#EEF4F8;
  --accent:#FF6B4A;
  --ink:#14212B;
  --ink-2:#3E4C59;
  --ink-3:#7A8895;
  --bg:#FFFFFF;
  --bg-alt:#F5F8FA;
  --line:#E2E9EF;
  --line-strong:#CFE0E9;
  --shadow-sm:0 6px 24px rgba(11,90,114,.08);
  --shadow-md:0 12px 32px rgba(11,90,114,.14);
  --r-sm:8px;
  --r-md:12px;
  --r-lg:16px;
  --pill:999px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--primary);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--primary-light)}
button{font-family:inherit}
h1,h2,h3,h4{margin:0 0 14px;color:var(--ink);letter-spacing:-.3px}
h1{font-size:clamp(28px,4.2vw,46px);font-weight:700;line-height:1.25}
h2{font-size:clamp(23px,2.7vw,32px);font-weight:700;line-height:1.3}
h3{font-size:18px;font-weight:600;line-height:1.45}
p{margin:0 0 14px}
p:last-child{margin-bottom:0}
:focus-visible{outline:2px solid var(--primary-light);outline-offset:3px;border-radius:4px}

/* ---------- 布局容器 ---------- */
.container{width:100%;max-width:1224px;margin:0 auto;padding:0 24px}
.row{max-width:none;margin-left:-12px;margin-right:-12px}
.column,.columns{padding-left:12px;padding-right:12px}
.section{padding:88px 0}
.section.alt{background:var(--bg-alt)}
.section.pale{background:var(--primary-pale)}
.section.hairline{border-top:1px solid var(--line)}
.section-head{max-width:720px;margin-bottom:38px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-head p{color:var(--ink-2);font-size:15px;line-height:1.8;margin:0}
.eyebrow{
  display:inline-block;font-size:13px;font-weight:600;letter-spacing:.04em;
  color:var(--primary);background:var(--primary-pale);
  padding:5px 13px;border-radius:var(--pill);margin-bottom:14px;
}
.lead-wide{max-width:700px}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:120;
  background:transparent;border-bottom:1px solid transparent;
  transition:background .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.site-header.is-scrolled{
  background:#fff;border-bottom-color:var(--line);
  box-shadow:0 2px 14px rgba(11,90,114,.07);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:68px;gap:20px}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px;color:var(--ink);flex:0 0 auto}
.logo:hover{color:var(--ink)}
.logo-mark{
  width:32px;height:32px;border-radius:10px;flex:0 0 auto;position:relative;
  background:linear-gradient(135deg,var(--primary),var(--primary-light));
}
.logo-mark::after{
  content:"";position:absolute;left:50%;top:50%;transform:translate(-38%,-50%);
  border-style:solid;border-width:6px 0 6px 10px;border-color:transparent transparent transparent #fff;
}
.main-nav ul{display:flex;align-items:center;gap:28px;list-style:none;margin:0;padding:0}
.main-nav a{
  position:relative;display:inline-block;padding:6px 0;
  font-size:15px;font-weight:500;color:var(--ink-2);
}
.main-nav a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;
  background:var(--primary);transform:scaleX(0);transform-origin:center;
  transition:transform .15s ease;
}
.main-nav a:hover{color:var(--primary)}
.main-nav a:hover::after,.main-nav a.active::after{transform:scaleX(1)}
.main-nav a.active{color:var(--primary)}
.drawer-cta{display:none}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.icon-btn{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--line);background:#fff;
  display:inline-flex;align-items:center;justify-content:center;color:var(--ink-2);
  cursor:pointer;transition:all .2s ease;
}
.icon-btn:hover{border-color:var(--line-strong);color:var(--primary);background:var(--primary-pale)}
.hamburger{
  display:none;width:44px;height:44px;border:1px solid var(--line);background:#fff;
  border-radius:10px;cursor:pointer;padding:0;flex-direction:column;
  align-items:center;justify-content:center;gap:5px;
}
.hamburger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink-2);transition:.2s}
.hamburger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.hamburger[aria-expanded="true"] span:nth-child(2){opacity:0}
.hamburger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;min-height:44px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;
  cursor:pointer;transition:all .2s ease;text-align:center;
}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:#F45A38;color:#fff;box-shadow:0 8px 20px rgba(255,107,74,.28)}
.btn-secondary{background:#fff;border-color:var(--primary);color:var(--primary)}
.btn-secondary:hover{background:var(--primary-pale);color:var(--primary)}
.btn-brand{background:var(--primary);color:#fff}
.btn-brand:hover{background:#0A4E63;color:#fff;box-shadow:0 8px 20px rgba(11,90,114,.22)}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.6);color:#fff}
.btn-outline-light:hover{background:rgba(255,255,255,.12);color:#fff}
.btn-block{width:100%}
.btn-sm{padding:9px 18px;min-height:38px;font-size:14px}
.btn-lg{padding:15px 30px;min-height:50px;font-size:16px}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--primary)}
.text-link svg{transition:transform .18s ease}
.text-link:hover svg{transform:translateX(3px)}

/* ---------- Hero ---------- */
.hero{
  position:relative;padding:64px 0 0;background:
  linear-gradient(180deg,#F7FAFC 0%,#FFFFFF 78%);
  overflow:hidden;
}
.hero-panel{padding-bottom:56px}
.hero-copy{max-width:560px}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  color:var(--primary);background:#fff;border:1px solid var(--line-strong);
  border-radius:var(--pill);padding:6px 14px;margin-bottom:18px;
  box-shadow:var(--shadow-sm);
}
.hero-badge i{width:7px;height:7px;border-radius:50%;background:var(--accent);display:inline-block}
.hero h1{margin-bottom:16px}
.hero-sub{font-size:16px;color:var(--ink-2);line-height:1.8;max-width:520px;margin-bottom:26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:26px}
.hero-trust{display:flex;flex-wrap:wrap;gap:10px 22px;list-style:none;margin:0;padding:0}
.hero-trust li{display:flex;align-items:center;gap:7px;font-size:13.5px;color:var(--ink-2)}
.hero-trust li::before{
  content:"";width:15px;height:15px;border-radius:50%;flex:0 0 auto;
  background:var(--primary-pale) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%230B5A72' stroke-width='3.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6 9 17l-5-5'/%3E%3C/svg%3E") center/10px no-repeat;
}
.hero-visual{position:relative;margin-left:12px}
.hero-visual .hero-img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-lg);
  box-shadow:0 18px 48px rgba(11,90,114,.14);
}
.hero-visual::after{
  content:"";position:absolute;right:-24px;bottom:-24px;width:130px;height:130px;
  border:6px solid var(--primary-pale);border-radius:var(--r-lg);z-index:-1;
}
.ring-card{
  position:absolute;left:-18px;bottom:22px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-lg);box-shadow:var(--shadow-md);
  padding:14px 18px;display:flex;align-items:center;gap:14px;max-width:290px;
}
.ring{
  width:62px;height:62px;border-radius:50%;flex:0 0 auto;position:relative;
  display:grid;place-items:center;
  background:conic-gradient(var(--primary) 0 92%,var(--line) 92% 100%);
}
.ring::before{content:"";position:absolute;inset:7px;border-radius:50%;background:#fff}
.ring span{position:relative;font-size:14px;font-weight:700;color:var(--primary)}
.ring-card strong{display:block;font-size:14px;color:var(--ink)}
.ring-card small{display:block;font-size:12.5px;color:var(--ink-3);line-height:1.6;margin-top:2px}

/* ---------- 指标带 ---------- */
.metric-strip{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.metric-strip .metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.metric-cell{padding:26px 20px;text-align:center;border-right:1px solid var(--line)}
.metric-cell:last-child{border-right:none}
.metric-cell strong{display:block;font-size:26px;font-weight:700;color:var(--primary);line-height:1.2}
.metric-cell span{display:block;font-size:13.5px;color:var(--ink-3);margin-top:4px}

/* ---------- 通用卡片 ---------- */
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--shadow-sm);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
  height:100%;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--line-strong)}
.card-body{padding:24px}
.card h3{margin-bottom:8px}
.card p{font-size:14.5px;color:var(--ink-2);line-height:1.75;margin:0}

/* ---------- 痛点卡片 ---------- */
.pain-card{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:24px 24px 24px 28px;box-shadow:var(--shadow-sm);height:100%;
  transition:transform .22s ease,box-shadow .22s ease;
}
.pain-card::before{
  content:"";position:absolute;left:0;top:22px;bottom:22px;width:3px;border-radius:3px;
  background:var(--primary-light);opacity:.75;
}
.pain-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.pain-icon{
  width:40px;height:40px;border-radius:10px;background:var(--primary-pale);
  display:flex;align-items:center;justify-content:center;color:var(--primary);margin-bottom:14px;
}
.pain-card h3{font-size:17px;margin-bottom:8px}
.pain-card p{font-size:14.5px;color:var(--ink-2);margin:0}

/* ---------- 解决方案 ---------- */
.solve-img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-lg);box-shadow:var(--shadow-sm)}
.solve-list{list-style:none;margin:0;padding:0}
.solve-list li{display:flex;gap:16px;padding:18px 0;border-bottom:1px dashed var(--line-strong)}
.solve-list li:last-child{border-bottom:none;padding-bottom:0}
.solve-num{
  width:32px;height:32px;flex:0 0 auto;border-radius:50%;background:var(--primary-pale);
  color:var(--primary);font-size:14px;font-weight:700;display:flex;align-items:center;justify-content:center;
}
.solve-list strong{display:block;font-size:16.5px;margin-bottom:5px;color:var(--ink)}
.solve-list p{font-size:14.5px;color:var(--ink-2);margin:0;line-height:1.75}

/* ---------- 步骤条 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative}
.step-node{position:relative;padding-top:8px}
.step-node::after{
  content:"";position:absolute;top:32px;left:56px;right:-24px;height:1px;
  border-top:1px dashed var(--line-strong);
}
.step-node:last-child::after{display:none}
.step-num{
  width:40px;height:40px;border-radius:10px;background:var(--primary-pale);color:var(--primary);
  font-weight:700;font-size:16px;display:flex;align-items:center;justify-content:center;
  position:relative;z-index:2;margin-bottom:16px;
}
.step-node.active .step-num{background:var(--primary);color:#fff}
.step-node h3{font-size:16.5px;margin-bottom:8px}
.step-node p{font-size:14.5px;color:var(--ink-2);margin:0;line-height:1.75}

/* ---------- 数据卡 ---------- */
.stat-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:28px 22px;box-shadow:var(--shadow-sm);text-align:center;height:100%;
  transition:transform .22s ease,box-shadow .22s ease;
}
.stat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.stat-card .num{
  font-size:clamp(34px,4vw,46px);font-weight:700;color:var(--primary);line-height:1.1;
  transition:transform .22s ease;
}
.stat-card:hover .num{transform:translateY(-4px)}
.stat-card .unit{font-size:15px;font-weight:600;color:var(--primary-light);margin-left:4px}
.stat-card .label{font-size:14px;color:var(--ink-2);margin-top:10px}

/* ---------- 评价卡 ---------- */
.quote-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--shadow-sm);height:100%;overflow:hidden;
  transition:transform .22s ease,box-shadow .22s ease;
}
.quote-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.quote-card .top-bar{height:4px;background:linear-gradient(90deg,var(--primary),var(--primary-light))}
.quote-body{padding:24px}
.quote-head{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.avatar{
  width:44px;height:44px;border-radius:50%;flex:0 0 auto;display:flex;align-items:center;justify-content:center;
  background:var(--primary-pale);color:var(--primary);font-weight:700;font-size:16px;
}
.quote-head strong{display:block;font-size:15px;color:var(--ink)}
.quote-head span{display:block;font-size:13px;color:var(--ink-3)}
.quote-body p{font-size:14.5px;color:var(--ink-2);line-height:1.8;margin:0 0 14px}
.stars{display:flex;gap:3px}
.stars i{width:14px;height:14px;display:block;background:var(--accent);
  clip-path:polygon(50% 0%,61% 35%,98% 35%,68% 57%,79% 91%,50% 70%,21% 91%,32% 57%,2% 35%,39% 35%);}
.stars i.off{background:var(--line-strong)}

/* ---------- 适用人群 ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.scene-cell{
  border-radius:var(--r-md);padding:24px;border:1px solid var(--line);background:#fff;
  transition:transform .22s ease,box-shadow .22s ease;
}
.scene-cell:nth-child(2),.scene-cell:nth-child(5){background:var(--primary-pale);border-color:#DCEAF2}
.scene-cell:hover{transform:translateY(-4px);box-shadow:var(--shadow-sm)}
.scene-cell .tag{
  display:inline-block;font-size:12.5px;font-weight:600;color:var(--primary);
  background:#fff;border:1px solid var(--line-strong);border-radius:var(--pill);padding:3px 10px;margin-bottom:12px;
}
.scene-cell:nth-child(2) .tag,.scene-cell:nth-child(5) .tag{background:#fff}
.scene-cell h3{font-size:16.5px;margin-bottom:7px}
.scene-cell p{font-size:14px;color:var(--ink-2);margin:0;line-height:1.75}
.scene-grid .tall{padding:32px 24px}

/* ---------- 资讯 ---------- */
.news-main{
  display:grid;grid-template-columns:1fr;gap:0;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--shadow-sm);height:100%;
  transition:transform .22s ease,box-shadow .22s ease;
}
.news-main:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.news-main img{width:100%;aspect-ratio:16/9;object-fit:cover}
.news-main .news-body{padding:22px 24px 26px}
.news-main h3{font-size:19px;margin-bottom:10px}
.news-main p{font-size:14.5px;color:var(--ink-2);margin:0 0 14px}
.news-meta{display:flex;align-items:center;gap:14px;font-size:13px;color:var(--ink-3)}
.news-sub{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;
  box-shadow:var(--shadow-sm);height:100%;transition:transform .22s ease,box-shadow .22s ease;
}
.news-sub:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.news-sub img{width:100%;aspect-ratio:16/9;object-fit:cover}
.news-sub .news-body{padding:16px 18px 18px}
.news-sub h3{font-size:15.5px;margin-bottom:8px}
.news-sub .news-meta{font-size:12.5px}

/* ---------- 指标条 ---------- */
.bar-row{display:grid;grid-template-columns:170px 1fr 62px;align-items:center;gap:18px;padding:16px 0;border-bottom:1px dashed var(--line)}
.bar-row:last-child{border-bottom:none}
.bar-name{font-size:14.5px;color:var(--ink-2)}
.bar-track{height:8px;border-radius:var(--pill);background:var(--primary-pale);overflow:hidden}
.bar-fill{height:100%;border-radius:var(--pill);background:linear-gradient(45deg,var(--primary),var(--primary-light))}
.bar-val{font-size:14.5px;font-weight:700;color:var(--primary);text-align:right}

/* ---------- 表单 / CTA ---------- */
.cta-form-wrap{
  background:var(--primary-pale);border:1px solid #DCEAF2;border-radius:var(--r-lg);
  padding:40px;text-align:center;
}
.cta-form-wrap h2{max-width:620px;margin-left:auto;margin-right:auto}
.cta-form-wrap > p{max-width:600px;margin:0 auto 26px;color:var(--ink-2);font-size:15px}
.mini-form{max-width:520px;margin:0 auto;display:grid;grid-template-columns:1fr 1fr;gap:16px;text-align:left}
.field{display:flex;flex-direction:column;gap:7px}
.field label{font-size:13.5px;font-weight:600;color:var(--ink-2)}
.field input{
  height:48px;border-radius:var(--r-sm);border:1px solid var(--line);background:#fff;
  padding:0 14px;font-size:15px;color:var(--ink);transition:border-color .18s ease,box-shadow .18s ease;
  width:100%;
}
.field input::placeholder{color:#A9B6C0}
.field input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(11,90,114,.14)}
.mini-form .form-submit{grid-column:1/-1}
.form-note{grid-column:1/-1;font-size:12.5px;color:var(--ink-3);text-align:center;margin:2px 0 0}

/* ---------- 时间线 ---------- */
.timeline{position:relative;padding-left:26px;margin:0;list-style:none}
.timeline::before{content:"";position:absolute;left:6px;top:8px;bottom:8px;width:1px;background:var(--line-strong)}
.timeline li{position:relative;padding:0 0 26px 18px}
.timeline li:last-child{padding-bottom:0}
.timeline li::before{
  content:"";position:absolute;left:-26px;top:8px;width:13px;height:13px;border-radius:50%;
  background:#fff;border:3px solid var(--primary-light);
}
.timeline li:first-child::before{border-color:var(--primary)}
.tl-head{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:6px}
.tl-head time{font-size:13.5px;color:var(--ink-3)}
.badge-version{
  display:inline-block;font-size:12.5px;font-weight:600;color:var(--primary);
  background:var(--primary-pale);border-radius:var(--pill);padding:3px 11px;
}
.timeline p{font-size:14.5px;color:var(--ink-2);margin:0;line-height:1.75}

/* ---------- 功能网格 ---------- */
.feature-big{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:26px;box-shadow:var(--shadow-sm);height:100%;transition:transform .22s ease,box-shadow .22s ease;
}
.feature-big:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.feature-big h3{font-size:18px;margin-bottom:9px}
.feature-big p{font-size:14.5px;color:var(--ink-2);margin:0}
.feature-small{
  background:var(--primary-pale);border:1px solid #DCEAF2;border-radius:var(--r-md);
  padding:20px;height:100%;transition:transform .22s ease,box-shadow .22s ease;
}
.feature-small:hover{transform:translateY(-4px);box-shadow:var(--shadow-sm)}
.feature-small.solid{background:var(--primary);border-color:var(--primary)}
.feature-small.solid h3{color:#fff}
.feature-small.solid p{color:rgba(255,255,255,.82)}
.feature-small h3{font-size:15.5px;margin-bottom:7px}
.feature-small p{font-size:13.5px;color:var(--ink-2);margin:0;line-height:1.7}
.icon-tile{
  width:36px;height:36px;border-radius:10px;background:#fff;color:var(--primary);
  display:flex;align-items:center;justify-content:center;margin-bottom:14px;
}
.feature-small.solid .icon-tile{background:rgba(255,255,255,.14);color:#fff}

/* ---------- 规格表 ---------- */
.spec-table{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden}
.spec-table thead th{
  background:var(--primary);color:#fff;font-size:14px;font-weight:600;
  padding:14px 18px;text-align:left;
}
.spec-table tbody td{padding:15px 18px;font-size:14.5px;color:var(--ink-2);border-top:1px solid var(--line)}
.spec-table tbody tr:nth-child(odd){background:var(--primary-pale)}
.spec-table tbody td:first-child{font-weight:600;color:var(--ink);width:22%}

/* ---------- 面包屑（备用） ---------- */
.breadcrumb{font-size:13px;color:var(--ink-3);padding:18px 0 0}
.breadcrumb a{color:var(--ink-3)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{margin:0 7px;color:#B9C6CF}
.breadcrumb .current{color:var(--primary)}

/* ---------- FAQ ---------- */
.faq-list{max-width:860px;margin:0 auto}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  margin-bottom:12px;overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item.is-open{border-color:var(--line-strong);box-shadow:var(--shadow-sm)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:18px 22px;background:none;border:none;cursor:pointer;text-align:left;
  font-size:16px;font-weight:600;color:var(--ink);min-height:56px;
}
.faq-icon{position:relative;width:16px;height:16px;flex:0 0 auto}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--primary);border-radius:2px;transition:transform .2s ease,opacity .2s ease;
}
.faq-icon::before{left:0;right:0;top:7px;height:2px}
.faq-icon::after{top:0;bottom:0;left:7px;width:2px}
.faq-item.is-open .faq-icon::after{transform:scaleY(0);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease}
.faq-item.is-open .faq-a{max-height:400px}
.faq-a p{padding:0 22px 20px;font-size:14.5px;color:var(--ink-2);line-height:1.8;margin:0}

/* ---------- 尾部 CTA ---------- */
.bottom-cta{background:var(--primary);color:#fff}
.bottom-cta .inner{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:36px 0;flex-wrap:wrap;
}
.bottom-cta h2{color:#fff;font-size:clamp(20px,2.2vw,26px);margin:0 0 6px}
.bottom-cta p{color:rgba(255,255,255,.78);font-size:14.5px;margin:0}

/* ---------- 页脚 ---------- */
.site-footer{background:#14212B;color:#C9D8E0;padding:60px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:34px;padding-bottom:40px}
.site-footer .logo{color:#fff;margin-bottom:14px}
.site-footer .logo:hover{color:#fff}
.site-footer h4{font-size:15px;color:#fff;margin:0 0 16px;font-weight:600}
.site-footer p{font-size:13.5px;color:#9FB2BE;line-height:1.8;margin:0}
.footer-links{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:11px}
.footer-links a{font-size:13.5px;color:#C9D8E0}
.footer-links a:hover{color:#fff}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);padding:20px 0;
  display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#8FA3AF;
}
.footer-bottom a{color:#8FA3AF}
.footer-bottom a:hover{color:#fff}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1023px){
  .section{padding:72px 0}
  .main-nav{
    position:fixed;top:68px;left:0;right:0;bottom:0;background:#fff;
    padding:8px 24px 120px;overflow-y:auto;display:none;z-index:110;
    border-top:1px solid var(--line);
  }
  .main-nav.is-open{display:block}
  .main-nav ul{flex-direction:column;align-items:stretch;gap:0}
  .main-nav li{border-bottom:1px solid var(--line)}
  .main-nav a{display:flex;align-items:center;justify-content:space-between;height:48px;font-size:16px;width:100%}
  .main-nav a::before{content:""}
  .main-nav a::after{display:none}
  .drawer-cta{display:block;position:absolute;left:0;right:0;bottom:0;padding:14px 24px;background:#fff;border-top:1px solid var(--line)}
  .main-nav{position:fixed}
  .hamburger{display:flex}
  .hero{padding-top:48px}
  .hero-copy{max-width:none}
  .hero-visual{margin:0 0 28px}
  .ring-card{left:12px;bottom:12px}
  .hero-visual::after{display:none}
  .metric-strip .metric-grid{grid-template-columns:repeat(2,1fr)}
  .metric-cell:nth-child(2){border-right:none}
  .metric-cell:nth-child(1),.metric-cell:nth-child(2){border-bottom:1px solid var(--line)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .step-node::after{display:none}
  .scene-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media screen and (max-width:639px){
  .container{padding:0 16px}
  .section{padding:56px 0}
  .section-head{margin-bottom:28px}
  .hero{padding-top:36px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .hero-trust{gap:10px 16px}
  .metric-strip .metric-grid{grid-template-columns:1fr 1fr}
  .metric-cell{padding:20px 12px}
  .metric-cell strong{font-size:22px}
  .steps{grid-template-columns:1fr;gap:0}
  .step-node{display:flex;gap:14px;padding:0 0 22px 0;position:relative}
  .step-node::before{content:"";position:absolute;left:19px;top:44px;bottom:0;width:1px;background:var(--line-strong)}
  .step-node:last-child::before{display:none}
  .step-num{margin-bottom:0}
  .step-node .step-text{padding-bottom:0}
  .scene-grid{grid-template-columns:1fr}
  .mini-form{grid-template-columns:1fr}
  .cta-form-wrap{padding:26px 18px}
  .bar-row{grid-template-columns:1fr 54px;gap:8px 12px}
  .bar-name{grid-column:1/-1}
  .bar-val{grid-column:2;text-align:right}
  .spec-table thead{display:none}
  .spec-table,.spec-table tbody,.spec-table tr,.spec-table td{display:block;width:100%}
  .spec-table tr{border:1px solid var(--line);border-radius:var(--r-md);margin-bottom:12px;background:#fff;overflow:hidden}
  .spec-table tbody tr:nth-child(odd){background:#fff}
  .spec-table tbody td{border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:14px;padding:12px 16px}
  .spec-table tbody td:first-child{width:auto;background:var(--primary-pale)}
  .spec-table tbody td::before{content:attr(data-label);font-size:13px;color:var(--ink-3);font-weight:600}
  .spec-table tbody td:first-child::before{color:var(--primary)}
  .bottom-cta .inner{flex-direction:column;align-items:flex-start}
  .bottom-cta .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{justify-content:flex-start}
  .faq-q{padding:16px 18px;font-size:15px}
  .faq-a p{padding:0 18px 18px}
  .card:hover,.pain-card:hover,.stat-card:hover,.quote-card:hover,.news-main:hover,.news-sub:hover,.feature-big:hover,.feature-small:hover,.scene-cell:hover{transform:none}
}

/* roulang page: category1 */
:root{
 --primary:#0B5A72;
 --primary-light:#2E8FB5;
 --primary-pale:#EEF4F8;
 --accent:#FF6B4A;
 --ink:#14212B;
 --ink-2:#3E4C59;
 --ink-3:#7A8895;
 --bg:#FFFFFF;
 --bg-alt:#F5F8FA;
 --line:#E2E9EF;
 --line-strong:#CFE0E9;
 --shadow-sm:0 6px 24px rgba(11,90,114,.08);
 --shadow-md:0 12px 32px rgba(11,90,114,.14);
 --r-sm:8px;
 --r-md:12px;
 --r-lg:16px;
 --pill:999px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
 margin:0;
 font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",sans-serif;
 font-size:16px;
 line-height:1.75;
 color:var(--ink);
 background:var(--bg);
 -webkit-font-smoothing:antialiased;
 font-variant-numeric:tabular-nums;
}
body.no-scroll{overflow:hidden}
img{max-width:100%;height:auto;display:block}
a{color:var(--primary);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--primary-light)}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;color:var(--ink);letter-spacing:-.3px}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--primary-light);outline-offset:2px}
.container{width:100%;max-width:1224px;margin:0 auto;padding:0 24px}
.row{max-width:none;margin-left:-12px;margin-right:-12px}
.column,.columns{padding-left:12px;padding-right:12px;float:none}
.section{padding:88px 0}
.section.alt{background:var(--bg-alt)}
.section.pale{background:var(--primary-pale)}
.section h2{font-size:clamp(24px,3vw,32px)}
.section-head{max-width:720px;margin-bottom:36px}
.section-head p{color:var(--ink-2);font-size:15px;line-height:1.8;margin-top:10px}
.eyebrow{
 display:inline-block;font-size:13px;font-weight:600;letter-spacing:.04em;
 color:var(--primary);background:var(--primary-pale);
 padding:5px 13px;border-radius:var(--pill);margin-bottom:14px;
}
/* ---------- 导航 ---------- */
.site-header{
 position:sticky;top:0;z-index:120;
 background:transparent;border-bottom:1px solid transparent;
 transition:background .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.site-header.is-scrolled{background:#fff;border-bottom-color:var(--line);box-shadow:0 2px 14px rgba(11,90,114,.07)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:68px;gap:20px}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px;color:var(--ink);flex:0 0 auto}
.logo:hover{color:var(--ink)}
.logo-mark{width:32px;height:32px;border-radius:10px;flex:0 0 auto;position:relative;background:linear-gradient(135deg,var(--primary),var(--primary-light))}
.logo-mark::after{content:"";position:absolute;left:50%;top:50%;transform:translate(-38%,-50%);border-style:solid;border-width:6px 0 6px 10px;border-color:transparent transparent transparent #fff}
.main-nav ul{display:flex;align-items:center;gap:28px;margin:0;padding:0}
.main-nav a{position:relative;display:inline-block;padding:6px 0;font-size:15px;font-weight:500;color:var(--ink-2)}
.main-nav a::after{
 content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;
 background:var(--primary);transform:scaleX(0);transform-origin:center;transition:transform .15s ease;
}
.main-nav a:hover{color:var(--primary)}
.main-nav a:hover::after,.main-nav a.active::after{transform:scaleX(1)}
.main-nav a.active{color:var(--primary)}
.drawer-cta{display:none}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.icon-btn{
 width:40px;height:40px;border-radius:10px;border:1px solid var(--line);background:#fff;
 display:inline-flex;align-items:center;justify-content:center;color:var(--ink-2);
 cursor:pointer;transition:all .2s ease;
}
.icon-btn:hover{border-color:var(--line-strong);color:var(--primary);background:var(--primary-pale)}
.hamburger{
 display:none;width:44px;height:44px;border:1px solid var(--line);background:#fff;
 border-radius:10px;cursor:pointer;padding:0;flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.hamburger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink-2);transition:.2s}
.hamburger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.hamburger[aria-expanded="true"] span:nth-child(2){opacity:0}
.hamburger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
/* ---------- 按钮 ---------- */
.btn{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;
 padding:12px 24px;min-height:44px;border-radius:var(--r-sm);
 font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;
 cursor:pointer;transition:all .2s ease;text-align:center;
}
.btn-brand{background:var(--primary);color:#fff}
.btn-brand:hover{background:#0A4E63;color:#fff;box-shadow:0 8px 20px rgba(11,90,114,.22)}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:#F45A38;color:#fff;box-shadow:0 8px 20px rgba(255,107,74,.28)}
.btn-secondary{background:#fff;border-color:var(--primary);color:var(--primary)}
.btn-secondary:hover{background:var(--primary-pale);color:var(--primary)}
.btn-block{width:100%}
.btn-sm{padding:9px 18px;min-height:38px;font-size:14px}
/* ---------- 分类头部 ---------- */
.cat-head{
 padding:34px 0 46px;
 background:linear-gradient(180deg,#F7FAFC 0%,#FFFFFF 88%);
 border-bottom:1px solid var(--line);
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-3);margin-bottom:18px}
.breadcrumb a{color:var(--ink-3)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:#B9C6D0}
.breadcrumb .current{color:var(--primary);font-weight:600}
.cat-head-grid{display:flex;align-items:flex-start;gap:44px}
.cat-head-copy{flex:1 1 auto;max-width:660px}
.cat-head h1{font-size:clamp(26px,3.4vw,38px);margin-bottom:16px}
.cat-head-copy p{color:var(--ink-2);font-size:15.5px;line-height:1.85;max-width:640px}
.cat-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 20px;margin-top:22px;font-size:13.5px;color:var(--ink-3)}
.cat-meta .dot{width:6px;height:6px;border-radius:50%;background:var(--primary-light);display:inline-block;margin-right:6px;vertical-align:middle}
.cat-meta strong{color:var(--primary);font-weight:700}
.cat-thumb{
 flex:0 0 300px;width:300px;border-radius:var(--r-lg);overflow:hidden;
 border:1px solid var(--line);box-shadow:var(--shadow-sm);background:var(--primary-pale);
}
.cat-thumb img{width:100%;aspect-ratio:4/3;object-fit:cover}
/* ---------- 筛选条 ---------- */
.filter-bar{
 display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px 24px;
 background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
 box-shadow:var(--shadow-sm);padding:16px 20px;margin-bottom:32px;
}
.chip-group{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.chip-group .label{font-size:13px;color:var(--ink-3);margin-right:2px}
.chip{
 display:inline-flex;align-items:center;padding:7px 14px;border-radius:var(--pill);
 border:1px solid var(--line);background:#fff;font-size:13.5px;color:var(--ink-2);
 cursor:pointer;transition:all .18s ease;min-height:34px;
}
.chip:hover{border-color:var(--line-strong);color:var(--primary)}
.chip.is-active{background:var(--primary-pale);border-color:var(--primary);color:var(--primary);font-weight:600}
.sort-wrap{display:flex;align-items:center;gap:10px}
.sort-wrap .label{font-size:13px;color:var(--ink-3)}
.sort-select{
 height:40px;border:1px solid var(--line);border-radius:var(--r-sm);padding:0 14px;
 font-size:14px;color:var(--ink-2);background:#fff;cursor:pointer;transition:border-color .18s ease;
}
.sort-select:hover{border-color:var(--line-strong)}
/* ---------- 列表卡片 ---------- */
.card-grid{margin-bottom:8px}
.card-grid .column{margin-bottom:24px}
.v-card{
 display:flex;flex-direction:column;height:100%;
 background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
 box-shadow:var(--shadow-sm);overflow:hidden;transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.v-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--line-strong)}
.thumb{position:relative;overflow:hidden;background:var(--primary-pale)}
.thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.v-card:hover .thumb img{transform:scale(1.03)}
.thumb-16-9{aspect-ratio:16/9}
.v-body{padding:18px 20px 16px;display:flex;flex-direction:column;flex:1 1 auto}
.tag{
 display:inline-flex;align-items:center;padding:4px 11px;border-radius:var(--pill);
 background:var(--primary-pale);color:var(--primary);font-size:12.5px;font-weight:600;align-self:flex-start;
}
.v-title{font-size:17px;font-weight:600;line-height:1.5;margin:12px 0 8px;color:var(--ink)}
.v-card:hover .v-title{color:var(--primary)}
.v-desc{
 font-size:14px;line-height:1.7;color:var(--ink-3);margin-bottom:16px;
 display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.v-meta{
 display:flex;align-items:center;justify-content:space-between;gap:12px;
 border-top:1px solid var(--line);padding-top:12px;margin-top:auto;font-size:13px;color:var(--ink-3);
}
.v-meta .views{display:inline-flex;align-items:center;gap:6px}
.v-meta svg{opacity:.7}
.v-card-wide{flex-direction:row}
.v-card-wide .thumb{flex:0 0 48%;max-width:48%}
.v-card-wide .v-body{padding:26px 30px;justify-content:center}
.v-card-wide .v-title{font-size:21px;margin-top:14px}
.v-card-wide .v-desc{-webkit-line-clamp:3;font-size:14.5px}
.more-wrap{display:flex;justify-content:center;margin-top:16px}
/* ---------- 热门条目 ---------- */
.hot-list{border-top:1px solid var(--line)}
.hot-item{
 display:flex;align-items:flex-start;gap:22px;padding:22px 0;border-bottom:1px solid var(--line);
 transition:background .18s ease;
}
.hot-item:hover{background:#FAFCFD}
.hot-num{
 flex:0 0 auto;font-size:26px;font-weight:700;color:var(--primary-light);
 line-height:1.2;width:52px;letter-spacing:-.5px;
}
.hot-item:hover .hot-num{color:var(--accent)}
.hot-body h3{font-size:17px;font-weight:600;margin-bottom:6px}
.hot-body h3 a{color:var(--ink)}
.hot-body h3 a:hover{color:var(--primary)}
.hot-body p{font-size:14px;line-height:1.7;color:var(--ink-3);max-width:620px}
/* ---------- 场景分栏 ---------- */
.scene-split{display:flex;gap:48px;align-items:flex-start}
.scene-figure{flex:0 0 42%;max-width:42%}
.scene-figure img{width:100%;aspect-ratio:1/1;object-fit:cover;border-radius:var(--r-lg);box-shadow:var(--shadow-sm)}
.scene-body{flex:1 1 auto}
.scene-body>p{color:var(--ink-2);font-size:15.5px;line-height:1.85;margin-bottom:24px}
.point-list li{display:flex;gap:14px;margin-bottom:20px}
.point-list li:last-child{margin-bottom:0}
.point-index{
 flex:0 0 auto;width:28px;height:28px;border-radius:9px;background:var(--primary-pale);
 color:var(--primary);font-size:14px;font-weight:700;display:inline-flex;align-items:center;justify-content:center;
}
.point-list h3{font-size:16.5px;font-weight:600;margin-bottom:4px}
.point-list p{font-size:14.5px;line-height:1.75;color:var(--ink-2)}
/* ---------- FAQ ---------- */
.faq-item{
 background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
 margin-bottom:12px;overflow:hidden;transition:border-color .18s ease,box-shadow .18s ease;
}
.faq-item[open]{border-color:var(--line-strong);box-shadow:var(--shadow-sm)}
.faq-item summary{
 display:flex;align-items:center;justify-content:space-between;gap:18px;
 padding:18px 20px;cursor:pointer;font-size:16px;font-weight:600;color:var(--ink);
 list-style:none;min-height:56px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
 content:"+";flex:0 0 auto;width:26px;height:26px;border-radius:50%;
 background:var(--primary-pale);color:var(--primary);font-size:17px;font-weight:700;
 display:inline-flex;align-items:center;justify-content:center;line-height:1;transition:background .18s ease;
}
.faq-item[open] summary::after{content:"−"}
.faq-item summary:hover{color:var(--primary)}
.faq-body{padding:0 20px 20px;font-size:15px;line-height:1.78;color:var(--ink-2);max-width:760px}
/* ---------- 相关推荐 ---------- */
.rec-card{
 display:flex;gap:16px;align-items:center;background:#fff;border:1px solid var(--line);
 border-radius:var(--r-md);padding:14px;box-shadow:var(--shadow-sm);margin-bottom:18px;
 transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.rec-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--line-strong)}
.rec-card img{flex:0 0 104px;width:104px;height:70px;object-fit:cover;border-radius:10px}
.rec-body h3{font-size:15.5px;font-weight:600;line-height:1.5;margin-bottom:6px}
.rec-body h3 a{color:var(--ink)}
.rec-body h3 a:hover{color:var(--primary)}
.rec-body span{font-size:13px;color:var(--ink-3)}
/* ---------- 尾部 CTA ---------- */
.cta-bar{background:var(--primary-pale);border-radius:var(--r-lg);padding:44px 40px;text-align:center}
.cta-bar h2{font-size:clamp(22px,2.6vw,28px);margin-bottom:12px}
.cta-bar p{color:var(--ink-2);font-size:15px;max-width:600px;margin:0 auto 24px}
/* ---------- 页脚 ---------- */
.site-footer{background:#14212B;color:#C9D8E0;padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.4fr;gap:40px;padding-bottom:44px}
.site-footer .logo{color:#fff;margin-bottom:16px}
.site-footer .logo:hover{color:#fff}
.site-footer .logo-mark{background:linear-gradient(135deg,#2E8FB5,#0B5A72)}
.site-footer p{font-size:14px;line-height:1.8;color:#9FB4C0}
.site-footer h4{font-size:15px;color:#fff;font-weight:600;margin-bottom:16px;letter-spacing:.02em}
.footer-links li{margin-bottom:10px}
.footer-links a{color:#C9D8E0;font-size:14px}
.footer-links a:hover{color:#fff}
.footer-bottom{
 display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
 border-top:1px solid rgba(255,255,255,.12);padding:20px 0 26px;font-size:13px;color:#8FA6B4;
}
.footer-bottom a{color:#C9D8E0}
.footer-bottom a:hover{color:#fff}
/* ---------- 响应式 ---------- */
@media screen and (max-width:1200px){
 .cat-thumb{flex:0 0 260px;width:260px}
}
@media screen and (max-width:1023px){
 .container{padding:0 20px}
 .header-actions .btn-brand{display:none}
 .hamburger{display:flex}
 .main-nav{
  position:fixed;left:0;right:0;top:68px;bottom:0;background:#fff;z-index:115;
  padding:8px 20px 0;display:flex;flex-direction:column;overflow-y:auto;
  transform:translateY(-10px);opacity:0;visibility:hidden;
  transition:opacity .2s ease,transform .2s ease,visibility .2s ease;
 }
 .main-nav.is-open{transform:translateY(0);opacity:1;visibility:visible}
 .main-nav ul{flex-direction:column;align-items:stretch;gap:0;width:100%}
 .main-nav ul li{border-bottom:1px solid var(--line)}
 .main-nav a{
  display:flex;align-items:center;justify-content:space-between;
  width:100%;height:48px;padding:0;font-size:16px;color:var(--ink);
 }
 .main-nav a::after{
  position:static;left:auto;right:auto;bottom:auto;width:8px;height:8px;
  background:transparent;border-radius:0;transform:rotate(45deg);
  border-top:1.5px solid var(--ink-3);border-right:1.5px solid var(--ink-3);
 }
 .main-nav a:hover::after{transform:rotate(45deg)}
 .main-nav a.active::after{transform:rotate(45deg)}
 .drawer-cta{display:block;margin-top:auto;padding:18px 0 30px;position:sticky;bottom:0;background:#fff}
 .section{padding:72px 0}
 .cat-head{padding:26px 0 38px}
 .cat-head-grid{flex-direction:column;gap:28px}
 .cat-thumb{flex:1 1 auto;width:100%;max-width:520px}
 .v-card-wide{flex-direction:column}
 .v-card-wide .thumb{flex:none;max-width:100%}
 .v-card-wide .v-body{padding:20px}
 .scene-split{flex-direction:column;gap:30px}
 .scene-figure{flex:none;max-width:100%;width:100%}
 .scene-figure img{aspect-ratio:16/9;max-width:520px}
 .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media screen and (max-width:767px){
 .section{padding:60px 0}
 .filter-bar{flex-direction:column;align-items:stretch}
 .sort-wrap{justify-content:space-between}
 .hot-item{gap:14px}
 .hot-num{font-size:22px;width:42px}
 .cta-bar{padding:32px 22px}
 .footer-grid{grid-template-columns:1fr;gap:28px}
}
@media screen and (max-width:520px){
 .container{padding:0 16px}
 .row{margin-left:-8px;margin-right:-8px}
 .column,.columns{padding-left:8px;padding-right:8px}
 .nav-wrap{height:60px}
 .main-nav{top:60px;padding:8px 16px 0}
 .main-nav a{height:48px}
 .logo{font-size:16px}
 .logo-mark{width:28px;height:28px}
 .cat-head h1{font-size:24px}
 .v-meta{flex-wrap:wrap;gap:6px}
 .rec-card{align-items:flex-start}
 .rec-card img{flex:0 0 84px;width:84px;height:58px}
 .btn{width:100%;padding:12px 18px}
 .more-wrap .btn{width:auto;min-width:180px}
 .chip{padding:7px 12px;font-size:13px}
}
@media (hover:none){
 .v-card:hover,.rec-card:hover{transform:none}
}