/* roulang page: index */
:root{
  --brand:#2B6C8F;
  --brand-deep:#1D4E68;
  --brand-light:#E8F0F5;
  --brand-10:rgba(43,108,143,.10);
  --brand-08:rgba(43,108,143,.08);
  --accent:#C08A3E;
  --accent-light:#F6EEDF;
  --accent-deep:#8A5F1F;
  --bg:#F6F7F8;
  --surface:#FFFFFF;
  --surface-2:#F0F3F5;
  --ink:#16232E;
  --ink-muted:#5A6B78;
  --ink-weak:#8A97A1;
  --line:#E3E7EB;
  --line-soft:#EDF0F2;
  --success:#2F7D5B;
  --warn:#B4553F;
  --r-card:14px;
  --r-img:12px;
  --r-btn:9px;
  --r-input:8px;
  --sh-sm:0 1px 2px rgba(22,35,46,.05);
  --sh-md:0 6px 18px rgba(22,35,46,.07);
  --sh-lg:0 14px 34px rgba(22,35,46,.10);
  --ease:cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
body.drawer-open{overflow:hidden;}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .18s var(--ease),background-color .18s var(--ease),border-color .18s var(--ease);}
button{font:inherit;cursor:pointer;border:0;background:none;}
h1,h2,h3,h4{margin:0;letter-spacing:-.01em;line-height:1.35;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
input{font:inherit;}
:focus-visible{outline:none;box-shadow:0 0 0 4px rgba(43,108,143,.28);border-radius:6px;}

.container{width:100%;max-width:1220px;margin:0 auto;padding:0 24px;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.96);
  backdrop-filter:saturate(180%) blur(10px);
  -webkit-backdrop-filter:saturate(180%) blur(10px);
  border-bottom:1px solid var(--line-soft);
  transition:box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.site-header.is-stuck{box-shadow:var(--sh-sm);border-bottom-color:var(--line);}
.brand-row{display:flex;align-items:center;gap:22px;height:66px;transition:height .22s var(--ease);}
.site-header.is-stuck .brand-row{height:58px;}

.logo{display:inline-flex;align-items:center;gap:10px;flex:none;}
.logo-mark{
  width:36px;height:36px;border-radius:10px;
  background:linear-gradient(140deg,var(--brand),var(--brand-deep));
  color:#fff;display:grid;place-items:center;
  font-size:14px;font-weight:700;letter-spacing:.02em;
  box-shadow:var(--sh-sm);
}
.logo-text{display:flex;flex-direction:column;line-height:1.08;}
.logo-main{font-size:17px;font-weight:700;color:var(--ink);letter-spacing:.01em;}
.logo-sub{font-size:11px;color:var(--ink-weak);letter-spacing:.18em;}

.header-search{
  flex:1 1 auto;max-width:340px;min-width:160px;
  display:flex;align-items:center;gap:8px;
  height:40px;padding:0 12px;
  background:var(--surface-2);
  border:1px solid transparent;border-radius:var(--r-input);
  transition:background .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.header-search:focus-within{background:#fff;border-color:rgba(43,108,143,.5);box-shadow:0 0 0 4px rgba(43,108,143,.14);}
.header-search svg{flex:none;width:16px;height:16px;stroke:var(--ink-weak);fill:none;stroke-width:1.7;}
.header-search input{flex:1;border:0;background:transparent;font-size:14px;color:var(--ink);outline:none;}
.header-search input::placeholder{color:var(--ink-weak);}

.header-actions{display:flex;align-items:center;gap:10px;margin-left:auto;flex:none;}

.menu-toggle{
  display:none;width:44px;height:44px;border-radius:10px;
  align-items:center;justify-content:center;flex-direction:column;gap:4px;
  border:1px solid var(--line);background:#fff;
}
.menu-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink-muted);transition:transform .2s var(--ease),opacity .2s var(--ease);}
.menu-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.menu-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.menu-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

.channel-bar{border-top:1px solid var(--line-soft);background:var(--surface);transition:padding .22s var(--ease);}
.channel-row{display:flex;align-items:center;gap:20px;height:46px;transition:height .22s var(--ease);}
.site-header.is-stuck .channel-row{height:42px;}
.channel-nav{display:flex;align-items:center;gap:2px;flex:none;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:32px;
  padding:0 12px;border-radius:8px;font-size:14.5px;color:var(--ink-muted);white-space:nowrap;
}
.nav-link:hover{color:var(--brand);background:var(--brand-08);}
.nav-link.is-active{color:var(--brand);font-weight:600;}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:-8px;height:2px;border-radius:2px;background:var(--brand);
}
.channel-trends{display:flex;align-items:center;gap:8px;margin-left:auto;overflow:hidden;}
.trend-label{font-size:12px;color:var(--ink-weak);letter-spacing:.08em;flex:none;}
.chip{
  display:inline-flex;align-items:center;height:26px;padding:0 11px;border-radius:999px;
  font-size:12.5px;color:var(--ink-muted);background:var(--surface-2);white-space:nowrap;
  transition:background .18s var(--ease),color .18s var(--ease);
}
.chip:hover{background:var(--brand-light);color:var(--brand-deep);}

.drawer{max-height:0;overflow:hidden;background:#fff;border-top:1px solid var(--line-soft);transition:max-height .3s var(--ease);}
.drawer.is-open{max-height:640px;}
.drawer-inner{padding:14px 24px 24px;}
.drawer-link{display:flex;align-items:center;justify-content:space-between;padding:13px 2px;border-bottom:1px solid var(--line-soft);font-size:15px;color:var(--ink-muted);}
.drawer-link:hover{color:var(--brand);}
.drawer-link.is-active{color:var(--brand);font-weight:600;}
.drawer-link span{color:var(--ink-weak);font-size:13px;}
.drawer-cta{margin-top:18px;display:grid;gap:10px;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;white-space:nowrap;
  transition:background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease);
}
.btn:focus-visible{outline:none;box-shadow:0 0 0 4px rgba(43,108,143,.28);}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--sh-sm);}
.btn-primary:hover{background:var(--brand-deep);transform:translateY(-1px);box-shadow:var(--sh-md);}
.btn-primary:active{transform:translateY(0);}
.btn-secondary{background:#fff;color:var(--brand);border-color:var(--brand);}
.btn-secondary:hover{background:var(--brand-10);}
.btn-ghost{background:transparent;color:var(--ink-muted);border-color:var(--line);}
.btn-ghost:hover{color:var(--brand);border-color:var(--brand);background:var(--brand-08);}
.btn-accent{background:var(--accent);color:#fff;}
.btn-accent:hover{background:#A9762F;transform:translateY(-1px);box-shadow:var(--sh-md);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.btn:disabled{opacity:.45;box-shadow:none;transform:none;cursor:not-allowed;}

/* ============ 标签 / 徽章 ============ */
.badge{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;font-size:12px;font-weight:600;letter-spacing:.02em;white-space:nowrap;}
.badge-brand{background:var(--brand-light);color:var(--brand-deep);}
.badge-accent{background:var(--accent-light);color:var(--accent-deep);}

/* ============ 版块 ============ */
.section{padding:88px 0;}
.section-sm{padding:72px 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;}
.section-title{font-size:clamp(22px,2.4vw,30px);font-weight:700;color:var(--ink);}
.section-sub{margin-top:10px;color:var(--ink-muted);font-size:15px;max-width:660px;line-height:1.8;}
.more-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand);flex:none;transition:gap .2s var(--ease),color .2s var(--ease);}
.more-link:hover{gap:10px;color:var(--brand-deep);}

/* ============ 首屏 ============ */
.hero{position:relative;background:linear-gradient(180deg,#FFFFFF 0%,#F6F7F8 100%);border-bottom:1px solid var(--line-soft);overflow:hidden;}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(760px 420px at 88% 6%, rgba(43,108,143,.10), transparent 62%),
             radial-gradient(520px 320px at 2% 96%, rgba(192,138,62,.09), transparent 60%);
}
.hero-grid{position:relative;display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;padding:76px 0 84px;}
.hero-eyebrow{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:999px;
  background:var(--brand-light);color:var(--brand-deep);font-size:12.5px;font-weight:600;letter-spacing:.06em;
}
.hero h1{margin-top:20px;font-size:clamp(28px,4vw,44px);font-weight:700;line-height:1.3;color:var(--ink);letter-spacing:-.005em;}
.hero-sub{margin-top:18px;font-size:16.5px;line-height:1.85;color:var(--ink-muted);max-width:560px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px;}
.hero-stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;margin-top:40px;border-top:1px solid var(--line);}
.hero-stats li{padding:18px 18px 0 0;border-right:1px solid var(--line);}
.hero-stats li:last-child{border-right:0;padding-right:0;}
.hero-stats strong{display:block;font-size:13px;font-weight:700;color:var(--brand);letter-spacing:.08em;margin-bottom:6px;}
.hero-stats span{display:block;font-size:13px;line-height:1.65;color:var(--ink-muted);}

.hero-media{position:relative;border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-lg);background:var(--surface-2);}
.hero-media img{width:100%;height:clamp(300px,36vw,452px);object-fit:cover;}
.hero-badge{position:absolute;left:18px;bottom:18px;box-shadow:var(--sh-sm);}

/* ============ 保障条 ============ */
.assurance{background:var(--surface);border-bottom:1px solid var(--line-soft);}
.assurance-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;}
.assure-item{display:flex;gap:14px;padding:30px 26px;border-right:1px solid var(--line-soft);}
.assure-item:last-child{border-right:0;}
.assure-item:first-child{padding-left:0;}
.assure-item svg{flex:none;width:24px;height:24px;stroke:var(--brand);fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;margin-top:3px;}
.assure-item h3{font-size:15.5px;font-weight:600;color:var(--ink);}
.assure-item p{margin-top:6px;font-size:13.5px;line-height:1.7;color:var(--ink-muted);}

/* ============ 卡片 ============ */
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-sm);overflow:hidden;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-lg);border-color:#D8DFE4;}

.grid-goods{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px;}

.thumb{position:relative;display:block;width:100%;aspect-ratio:4/3;overflow:hidden;background:var(--surface-2);}
.thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease);}
.card:hover .thumb img{transform:scale(1.045);}

.goods-body{padding:16px 18px 18px;}
.goods-top{display:flex;align-items:center;gap:8px;flex-wrap:wrap;}
.goods-title{margin-top:12px;font-size:16px;font-weight:600;line-height:1.5;}
.goods-title a{color:var(--ink);}
.goods-title a:hover{color:var(--brand);}
.goods-meta{margin-top:8px;font-size:13.5px;line-height:1.7;color:var(--ink-muted);}
.goods-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:16px;padding-top:16px;border-top:1px solid var(--line-soft);}
.price{font-size:18px;font-weight:700;color:var(--brand-deep);letter-spacing:.01em;}
.price small{font-size:12px;font-weight:500;color:var(--ink-weak);margin-left:4px;}

/* ============ 工艺版块 ============ */
.craft{background:var(--surface);border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft);}
.craft-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.craft-media{border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-md);background:var(--surface-2);}
.craft-media img{width:100%;height:clamp(280px,32vw,400px);object-fit:cover;}
.craft-copy h2{font-size:clamp(22px,2.4vw,30px);font-weight:700;line-height:1.4;}
.craft-copy > p{margin-top:16px;font-size:15.5px;line-height:1.9;color:var(--ink-muted);}
.craft-list{margin-top:24px;display:grid;gap:12px;}
.craft-list li{position:relative;padding-left:20px;font-size:14.5px;line-height:1.8;color:var(--ink-muted);}
.craft-list li::before{content:"";position:absolute;left:0;top:11px;width:7px;height:7px;border-radius:50%;background:var(--accent);}
.craft-stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;margin-top:30px;padding-top:24px;border-top:1px solid var(--line);}
.craft-stats li{padding-right:14px;border-right:1px solid var(--line-soft);}
.craft-stats li:last-child{border-right:0;}
.craft-stats strong{display:block;font-size:17px;font-weight:700;color:var(--brand-deep);}
.craft-stats span{display:block;margin-top:4px;font-size:12.5px;color:var(--ink-weak);}

/* ============ 评价轮播 ============ */
.carousel-nav{display:flex;gap:10px;flex:none;}
.circle-btn{
  width:42px;height:42px;border-radius:50%;border:1px solid var(--line);background:#fff;
  color:var(--ink-muted);font-size:19px;line-height:1;display:grid;place-items:center;
  transition:all .18s var(--ease);
}
.circle-btn:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-08);}
.circle-btn:active{transform:scale(.95);}

.review-track{
  display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:4px 4px 12px;margin:0 -4px;scrollbar-width:none;
}
.review-track::-webkit-scrollbar{display:none;}
.review-card{
  flex:0 0 calc((100% - 40px) / 3);scroll-snap-align:start;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-sm);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.review-card:hover{transform:translateY(-2px);box-shadow:var(--sh-md);}
.stars{display:flex;gap:3px;color:var(--accent);font-size:14px;letter-spacing:2px;}
.review-text{margin-top:14px;font-size:14.8px;line-height:1.85;color:var(--ink-muted);}
.review-user{display:flex;align-items:center;gap:12px;margin-top:20px;padding-top:18px;border-top:1px solid var(--line-soft);}
.avatar{
  width:40px;height:40px;border-radius:50%;flex:none;display:grid;place-items:center;
  background:var(--brand-light);color:var(--brand-deep);font-weight:700;font-size:15px;
}
.review-user strong{display:block;font-size:14px;font-weight:600;color:var(--ink);}
.review-user span{display:block;font-size:12.5px;color:var(--ink-weak);}
.review-ref{margin-top:12px;font-size:12.5px;color:var(--ink-weak);}
.dots{display:flex;justify-content:center;gap:8px;margin-top:22px;}
.dot{width:8px;height:8px;border-radius:50%;background:#D5DCE1;transition:all .2s var(--ease);}
.dot.is-active{width:24px;border-radius:999px;background:var(--brand);}

/* ============ 最新信息 ============ */
.news-section{background:var(--surface);border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft);}
.grid-news{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;}
.news-card{
  display:grid;grid-template-columns:132px minmax(0,1fr);gap:14px;align-items:start;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:14px;box-shadow:var(--sh-sm);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--sh-md);border-color:#D8DFE4;}
.news-thumb{display:block;width:100%;aspect-ratio:4/3;border-radius:10px;overflow:hidden;background:var(--surface-2);}
.news-thumb img{width:100%;height:100%;object-fit:cover;}
.news-body{display:block;min-width:0;}
.news-title{
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  margin:10px 0 6px;font-size:15.5px;font-weight:600;line-height:1.55;color:var(--ink);
}
.news-card:hover .news-title{color:var(--brand);}
.news-desc{
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
  font-size:13.3px;line-height:1.7;color:var(--ink-muted);
}
.news-meta{display:block;margin-top:10px;font-size:12.5px;color:var(--ink-weak);}

.empty-state{
  border:1px dashed var(--line);border-radius:var(--r-card);background:#fff;
  padding:52px 24px;text-align:center;
}
.empty-state svg{width:44px;height:44px;margin:0 auto 14px;stroke:var(--ink-weak);fill:none;stroke-width:1.4;stroke-linecap:round;stroke-linejoin:round;}
.empty-state p{font-size:15px;color:var(--ink-muted);margin-bottom:18px;}

/* ============ FAQ ============ */
.faq-wrap{max-width:900px;margin:0 auto;}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-img);
  margin-bottom:12px;overflow:hidden;transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.faq-item:hover{border-color:#D8DFE4;}
.faq-item[open]{border-color:rgba(43,108,143,.42);box-shadow:var(--sh-sm);}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;font-size:16px;font-weight:600;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:focus-visible{outline:none;box-shadow:inset 0 0 0 3px rgba(43,108,143,.22);}
.faq-icon{position:relative;flex:none;width:18px;height:18px;}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--brand);border-radius:2px;transition:transform .2s var(--ease),opacity .2s var(--ease);}
.faq-icon::before{left:0;right:0;top:8px;height:2px;}
.faq-icon::after{top:0;bottom:0;left:8px;width:2px;}
.faq-item[open] .faq-icon::after{transform:scaleY(0);opacity:0;}
.faq-content{position:relative;padding:0 20px 20px 20px;font-size:14.8px;line-height:1.85;color:var(--ink-muted);}
.faq-item[open] .faq-content::before{content:"";position:absolute;left:0;top:2px;bottom:18px;width:3px;border-radius:2px;background:var(--brand);}

/* ============ CTA ============ */
.cta-section{padding:0 0 72px;}
.cta-block{
  position:relative;overflow:hidden;
  display:flex;align-items:center;justify-content:space-between;gap:36px;
  background:linear-gradient(120deg, rgba(43,108,143,.10) 0%, rgba(246,247,248,0) 58%), var(--surface);
  border:1px solid var(--line);border-radius:18px;padding:48px;
  box-shadow:var(--sh-sm);
}
.cta-block h2{font-size:clamp(20px,2.2vw,27px);font-weight:700;color:var(--ink);}
.cta-block p{margin-top:12px;font-size:15px;line-height:1.85;color:var(--ink-muted);max-width:620px;}
.cta-actions{display:flex;gap:12px;flex:none;flex-wrap:wrap;}

/* ============ 页脚 ============ */
.site-footer{background:#16232E;color:#B9C6CE;padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand .logo-mark{background:linear-gradient(140deg,#3E8AB0,#245b78);}
.footer-brand .logo-main{color:#fff;}
.footer-brand .logo-sub{color:#7E919D;}
.footer-desc{margin-top:16px;font-size:13.6px;line-height:1.85;color:#8FA2AE;max-width:320px;}
.footer-title{font-size:14px;font-weight:600;color:#fff;letter-spacing:.04em;margin-bottom:16px;}
.footer-links{display:grid;gap:11px;}
.footer-links a{font-size:13.6px;color:#9AACB7;}
.footer-links a:hover{color:#fff;}
.footer-contact{display:grid;gap:11px;font-size:13.6px;color:#9AACB7;}
.footer-contact strong{color:#fff;font-weight:600;}
.footer-sub{margin-top:18px;display:flex;gap:8px;}
.footer-sub input{
  flex:1;min-width:0;height:42px;padding:0 14px;border-radius:var(--r-input);
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);
  color:#fff;font-size:13.5px;outline:none;
}
.footer-sub input::placeholder{color:#7E919D;}
.footer-sub input:focus{border-color:rgba(192,138,62,.7);box-shadow:0 0 0 4px rgba(192,138,62,.18);}
.footer-bottom{
  margin-top:52px;border-top:1px solid rgba(255,255,255,.10);
  padding:22px 0 28px;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12.8px;color:#7E919D;
}
.footer-bottom a{color:#9AACB7;}
.footer-bottom a:hover{color:#fff;}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .grid-goods{grid-template-columns:repeat(3,minmax(0,1fr));}
  .grid-news{grid-template-columns:repeat(2,minmax(0,1fr));}
  .assurance-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .assure-item:nth-child(2){border-right:0;}
  .assure-item:nth-child(1),.assure-item:nth-child(2){border-bottom:1px solid var(--line-soft);}
  .assure-item:nth-child(3){padding-left:0;}
}
@media (max-width:1023px){
  .container{padding:0 20px;}
  .section{padding:64px 0;}
  .section-sm{padding:56px 0;}
  .brand-row{height:62px;}
  .header-search{display:none;}
  .menu-toggle{display:flex;}
  .channel-bar{display:none;}
  .hero-grid{grid-template-columns:1fr;gap:34px;padding:44px 0 60px;}
  .hero-media{order:-1;}
  .hero-media img{height:clamp(230px,48vw,360px);}
  .hero h1{font-size:clamp(26px,4.6vw,34px);}
  .hero-sub{font-size:15.5px;}
  .hero-cta .btn{flex:1 1 auto;}
  .craft-grid{grid-template-columns:1fr;gap:34px;}
  .craft-media img{height:clamp(230px,44vw,340px);}
  .grid-goods{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;}
  .grid-news{grid-template-columns:1fr;}
  .review-card{flex:0 0 calc((100% - 20px) / 2);}
  .carousel-nav{display:none;}
  .cta-block{flex-direction:column;align-items:flex-start;padding:36px;gap:24px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
}
@media (max-width:639px){
  .container{padding:0 16px;}
  .section{padding:48px 0;}
  .section-sm{padding:44px 0;}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:26px;}
  .logo-mark{width:32px;height:32px;font-size:13px;}
  .logo-main{font-size:16px;}
  .btn{height:46px;}
  .btn-sm{height:40px;}
  .hero-stats{grid-template-columns:1fr;border-top:1px solid var(--line);}
  .hero-stats li{border-right:0;border-bottom:1px solid var(--line-soft);padding:14px 0;}
  .hero-stats li:last-child{border-bottom:0;}
  .assurance-grid{grid-template-columns:1fr;}
  .assure-item{border-right:0;border-bottom:1px solid var(--line-soft);padding:22px 0;}
  .assure-item:last-child{border-bottom:0;}
  .grid-goods{grid-template-columns:1fr;}
  .review-card{flex:0 0 86%;}
  .news-card{grid-template-columns:104px minmax(0,1fr);gap:12px;padding:12px;}
  .craft-stats{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px 0;}
  .craft-stats li:nth-child(2){border-right:0;}
  .cta-block{padding:26px 20px;border-radius:14px;}
  .site-footer{padding-top:48px;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .footer-bottom{justify-content:flex-start;margin-top:36px;}
}

/* roulang page: article */
:root{
  --brand:#2B6C8F;
  --brand-dark:#1D4E68;
  --brand-light:#E8F0F5;
  --accent:#C08A3E;
  --accent-light:#F6EEDF;
  --accent-dark:#8A5F22;
  --bg:#F6F7F8;
  --surface:#FFFFFF;
  --surface-2:#F0F3F5;
  --text:#16232E;
  --text-2:#5A6B78;
  --text-3:#8A97A1;
  --border:#E3E7EB;
  --line:#EDF0F2;
  --success:#2F7D5B;
  --warn:#B4553F;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-sm:0 1px 2px rgba(22,35,46,.05);
  --shadow-md:0 6px 18px rgba(22,35,46,.07);
  --shadow-lg:0 14px 34px rgba(22,35,46,.10);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
html body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:'PingFang SC','Microsoft YaHei','Hiragino Sans GB','Source Han Sans SC',system-ui,sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease,box-shadow .2s ease,transform .2s ease;}
button,input{font:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
::selection{background:rgba(43,108,143,.18);}

html body .container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}
@media (min-width:1280px){
  html body .container{max-width:1240px;}
}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(255,255,255,.97);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease,background-color .2s ease;
}
.site-header.is-stuck{box-shadow:var(--shadow-sm);background:rgba(255,255,255,.99);}
.topbar-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  height:64px;
  transition:height .2s ease;
}
.site-header.is-stuck .topbar-inner{height:58px;}
.logo{display:inline-flex;align-items:center;gap:10px;flex:none;}
.logo-mark{
  width:38px;height:38px;border-radius:10px;
  background:linear-gradient(135deg,var(--brand),var(--brand-dark));
  color:#fff;display:grid;place-items:center;
  font-size:15px;font-weight:700;letter-spacing:.06em;
  box-shadow:var(--shadow-sm);
}
.logo-text{display:flex;flex-direction:column;line-height:1.15;}
.logo-main{font-size:17px;font-weight:700;letter-spacing:-.01em;color:var(--text);}
.logo-sub{font-size:12px;color:var(--text-3);letter-spacing:.14em;}
.topbar-tools{display:flex;align-items:center;gap:12px;}
.search-box{
  display:flex;align-items:center;gap:8px;
  background:var(--surface-2);
  border:1px solid transparent;
  border-radius:8px;
  padding:0 12px;
  height:38px;
  width:250px;
  transition:background-color .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.search-box:focus-within{background:#fff;border-color:var(--brand);box-shadow:0 0 0 3px rgba(43,108,143,.16);}
.search-box svg{width:16px;height:16px;stroke:var(--text-3);flex:none;}
.search-box input{
  border:0;outline:none;background:transparent;width:100%;
  font-size:14px;line-height:1.4;
}
.search-box input::placeholder{color:var(--text-3);}
.ghost-link{font-size:14px;color:var(--text-2);padding:6px 8px;border-radius:8px;}
.ghost-link:hover{color:var(--brand);background:rgba(43,108,143,.08);}
.icon-btn{
  display:none;
  width:40px;height:40px;border-radius:10px;
  border:1px solid var(--border);background:#fff;
  place-items:center;
}
.icon-btn svg{width:18px;height:18px;stroke:var(--text-2);}
.menu-toggle{
  display:none;
  width:44px;height:44px;border:1px solid var(--border);border-radius:10px;
  background:#fff;cursor:pointer;
  flex-direction:column;gap:4px;align-items:center;justify-content:center;
}
.menu-toggle span{display:block;width:18px;height:2px;background:var(--text-2);border-radius:2px;transition:transform .2s ease,opacity .2s ease;}
.menu-toggle.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.menu-toggle.is-open span:nth-child(2){opacity:0;}
.menu-toggle.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

.channel-bar{border-top:1px solid var(--line);background:rgba(255,255,255,.94);}
.channel-bar-inner{display:flex;align-items:center;gap:20px;min-height:52px;}
.channel-nav{display:flex;align-items:center;gap:4px;overflow-x:auto;scrollbar-width:none;}
.channel-nav::-webkit-scrollbar{display:none;}
.nav-link{
  position:relative;
  padding:8px 13px;
  border-radius:8px;
  font-size:15px;
  color:var(--text-2);
  white-space:nowrap;
}
.nav-link:hover{color:var(--brand);background:rgba(43,108,143,.08);}
.nav-link.is-active{color:var(--brand);font-weight:600;background:var(--brand-light);}
.nav-link.is-active::after{
  content:"";
  position:absolute;left:13px;right:13px;bottom:2px;height:2px;
  background:var(--brand);border-radius:2px;
}
.hot-chips{display:flex;align-items:center;gap:8px;margin-left:auto;}
.chip{
  display:inline-flex;align-items:center;
  padding:5px 12px;border-radius:999px;
  background:var(--surface-2);
  color:var(--text-2);
  font-size:13px;white-space:nowrap;
}
.chip:hover{background:var(--brand-light);color:var(--brand-dark);}
.chip-static{cursor:default;}
.chip-static:hover{background:var(--surface-2);color:var(--text-2);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  padding:10px 20px;
  border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  white-space:nowrap;
}
.btn:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(43,108,143,.4);}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--shadow-sm);}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px);box-shadow:var(--shadow-md);}
.btn-primary:active{transform:translateY(0);}
.btn-accent{background:var(--accent);color:#fff;}
.btn-accent:hover{background:var(--accent-dark);transform:translateY(-1px);}
.btn-outline{background:#fff;color:var(--brand);border-color:var(--brand);}
.btn-outline:hover{background:rgba(43,108,143,.10);}
.btn-ghost{background:transparent;color:var(--text-2);border-color:var(--border);}
.btn-ghost:hover{background:var(--surface-2);color:var(--text);}
.btn-sm{padding:7px 14px;font-size:14px;}
.btn-lg{padding:13px 26px;font-size:16px;}

.badge{
  display:inline-flex;align-items:center;
  padding:4px 10px;border-radius:999px;
  background:var(--brand-light);color:var(--brand-dark);
  font-size:12.5px;font-weight:600;letter-spacing:.02em;
}
.badge-accent{background:var(--accent-light);color:var(--accent-dark);}

/* ---------- 面包屑 ---------- */
.breadcrumb-wrap{padding-top:22px;}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text-3);flex-wrap:wrap;}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{color:#C7D0D7;}
.breadcrumb .current{color:var(--text-2);max-width:min(520px,60vw);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ---------- 文章头部 ---------- */
.article-head{padding:16px 24px 26px;}
.article-title{
  font-size:clamp(26px,3.6vw,40px);
  line-height:1.35;
  font-weight:700;
  letter-spacing:-.01em;
  margin-top:14px;
  color:var(--text);
}
.article-lead{
  margin-top:14px;
  font-size:16px;
  color:var(--text-2);
  max-width:820px;
}
.meta-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:18px;font-size:14px;color:var(--text-3);}
.meta-row .dot{width:3px;height:3px;border-radius:50%;background:#C7D0D7;}

/* ---------- 文章布局 ---------- */
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 316px;
  gap:32px;
  align-items:start;
  padding-bottom:8px;
}
.article-main{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-md);
  padding:40px 44px 34px;
}
.article-aside{display:flex;flex-direction:column;gap:20px;}
.side-card{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-sm);
  padding:20px;
  transition:box-shadow .2s ease,transform .2s ease;
}
.side-card:hover{box-shadow:var(--shadow-md);}
.side-title{
  font-size:16px;font-weight:700;color:var(--text);
  display:flex;align-items:center;gap:8px;
  margin-bottom:14px;
}
.side-title::before{content:"";width:4px;height:16px;border-radius:2px;background:var(--brand);}
.side-list li + li{border-top:1px solid var(--line);}
.side-list a{
  display:flex;align-items:center;justify-content:space-between;
  gap:12px;padding:11px 0;font-size:14.5px;color:var(--text-2);
}
.side-list a:hover{color:var(--brand);}
.side-list .arrow{color:#B9C4CC;font-size:13px;}
.rank-list li{display:flex;gap:12px;padding:11px 0;}
.rank-list li + li{border-top:1px solid var(--line);}
.rank-no{
  flex:none;width:22px;height:22px;border-radius:6px;
  display:grid;place-items:center;
  font-size:12.5px;font-weight:700;
  background:var(--surface-2);color:var(--text-3);
}
.rank-list li:nth-child(1) .rank-no{background:var(--brand);color:#fff;}
.rank-list li:nth-child(2) .rank-no{background:var(--brand-light);color:var(--brand-dark);}
.rank-list li:nth-child(3) .rank-no{background:var(--accent-light);color:var(--accent-dark);}
.rank-list a{font-size:14.5px;color:var(--text-2);line-height:1.6;}
.rank-list a:hover{color:var(--brand);}
.side-cta{
  background:linear-gradient(150deg,rgba(43,108,143,.10),rgba(43,108,143,.03));
  border:1px solid rgba(43,108,143,.18);
  border-radius:var(--radius-card);
  padding:22px;
}
.side-cta h3{font-size:16px;font-weight:700;color:var(--brand-dark);}
.side-cta p{margin-top:8px;font-size:14px;color:var(--text-2);line-height:1.75;}
.side-cta .btn{margin-top:14px;width:100%;}

/* ---------- 正文排版 ---------- */
.prose-mk{font-size:17.5px;line-height:1.9;color:#25313B;}
.prose-mk > * + *{margin-top:1.1em;}
.prose-mk h2{
  font-size:26px;font-weight:700;line-height:1.45;
  margin-top:2em;padding-left:14px;
  border-left:4px solid var(--brand);
  color:var(--text);letter-spacing:-.01em;
}
.prose-mk h3{font-size:20px;font-weight:600;line-height:1.5;margin-top:1.8em;color:var(--text);}
.prose-mk p{color:#2C3944;}
.prose-mk a{color:var(--brand);text-decoration:underline;text-underline-offset:3px;}
.prose-mk a:hover{color:var(--brand-dark);}
.prose-mk ul,.prose-mk ol{padding-left:1.35em;}
.prose-mk ul{list-style:disc;}
.prose-mk ol{list-style:decimal;}
.prose-mk li{margin:.45em 0;color:#2C3944;}
.prose-mk li::marker{color:var(--brand);}
.prose-mk img{border-radius:var(--radius-img);margin:1.5em auto;box-shadow:var(--shadow-md);}
.prose-mk figure{margin:1.6em 0;}
.prose-mk figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:10px;}
.prose-mk blockquote{
  margin:1.6em 0;padding:16px 20px;
  background:var(--accent-light);
  border-left:4px solid var(--accent);
  border-radius:0 10px 10px 0;
  color:#5C4525;font-size:16.5px;
}
.prose-mk blockquote p{color:#5C4525;}
.prose-mk table{
  width:100%;border-collapse:collapse;font-size:15px;line-height:1.7;
  border-radius:10px;overflow:hidden;
}
.prose-mk th,.prose-mk td{border:1px solid var(--border);padding:11px 13px;text-align:left;}
.prose-mk th{background:var(--surface-2);font-weight:600;color:var(--text);}
.prose-mk tr:nth-child(even) td{background:#FAFBFC;}
.prose-mk hr{border:0;border-top:1px solid var(--line);margin:2em 0;}

/* ---------- 空态 ---------- */
.article-empty{
  border:1px dashed var(--border);
  border-radius:var(--radius-card);
  background:var(--surface-2);
  padding:44px 26px;
  text-align:center;
}
.article-empty svg{width:34px;height:34px;stroke:var(--brand);margin:0 auto 14px;}
.article-empty h2{font-size:20px;font-weight:700;color:var(--text);}
.article-empty p{margin-top:10px;color:var(--text-2);font-size:15px;}
.article-empty .btn{margin-top:18px;}

/* ---------- 文末 ---------- */
.article-foot{margin-top:34px;padding-top:24px;border-top:1px solid var(--line);}
.article-tags{display:flex;align-items:center;gap:8px;flex-wrap:wrap;}
.article-tags .tags-label{font-size:13px;color:var(--text-3);margin-right:2px;}
.article-back{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-top:20px;}
.post-nav{
  display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:24px;
}
.post-nav a{
  display:flex;flex-direction:column;gap:6px;
  border:1px solid var(--border);border-radius:var(--radius-btn);
  padding:14px 16px;background:#fff;
}
.post-nav a:hover{border-color:var(--brand);box-shadow:var(--shadow-sm);transform:translateY(-1px);}
.post-nav .pn-label{font-size:12.5px;color:var(--text-3);}
.post-nav .pn-title{font-size:15px;font-weight:600;color:var(--text);}
.post-nav a:hover .pn-title{color:var(--brand);}

/* ---------- 相关阅读 ---------- */
.section{padding:72px 0 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:24px;}
.section-head h2{font-size:26px;font-weight:700;letter-spacing:-.01em;}
.section-head p{margin-top:6px;font-size:14.5px;color:var(--text-2);}
.more-link{font-size:14px;color:var(--brand);font-weight:600;display:inline-flex;align-items:center;gap:4px;}
.more-link:hover{color:var(--brand-dark);}
.rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;}
.rel-card{
  display:flex;flex-direction:column;
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-sm);
}
.rel-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-2px);}
.rel-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--surface-2);}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.rel-card:hover .rel-thumb img{transform:scale(1.04);}
.rel-body{padding:16px 18px 18px;display:flex;flex-direction:column;gap:10px;}
.rel-body h3{font-size:16.5px;font-weight:600;line-height:1.6;color:var(--text);}
.rel-card:hover .rel-body h3{color:var(--brand-dark);}
.rel-meta{font-size:13px;color:var(--text-3);}

/* ---------- CTA ---------- */
.cta-band{margin-top:80px;}
.cta-inner{
  position:relative;
  border-radius:var(--radius-card);
  overflow:hidden;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  box-shadow:var(--shadow-lg);
}
.cta-inner::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(20,38,52,.86),rgba(29,78,104,.72));
}
.cta-content{
  position:relative;z-index:2;
  padding:44px 40px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
}
.cta-content h2{font-size:26px;font-weight:700;color:#fff;letter-spacing:-.01em;}
.cta-content p{margin-top:10px;font-size:15px;color:rgba(255,255,255,.82);max-width:620px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}
.cta-actions .btn-outline{background:transparent;border-color:rgba(255,255,255,.65);color:#fff;}
.cta-actions .btn-outline:hover{background:rgba(255,255,255,.14);}
.cta-actions .btn-accent:hover{background:#A8762F;}

/* ---------- 页脚 ---------- */
.site-footer{margin-top:72px;background:#fff;border-top:1px solid var(--border);}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.4fr;
  gap:36px;
  padding:56px 0 34px;
}
.footer-brand .logo{margin-bottom:16px;}
.footer-desc{font-size:14px;color:var(--text-2);line-height:1.85;max-width:340px;}
.footer-title{font-size:15px;font-weight:700;color:var(--text);margin-bottom:14px;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{font-size:14px;color:var(--text-2);}
.footer-links a:hover{color:var(--brand);}
.footer-contact{display:flex;flex-direction:column;gap:8px;font-size:14px;color:var(--text-2);}
.footer-contact strong{color:var(--text);font-weight:600;}
.footer-sub{display:flex;gap:8px;margin-top:16px;}
.footer-sub input{
  flex:1;min-width:0;height:40px;border-radius:8px;
  border:1px solid var(--border);background:var(--surface-2);
  padding:0 12px;font-size:14px;outline:none;
  transition:background-color .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.footer-sub input:focus{background:#fff;border-color:var(--brand);box-shadow:0 0 0 3px rgba(43,108,143,.16);}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;
  border-top:1px solid var(--line);
  padding:18px 0 24px;
  font-size:13.5px;color:var(--text-3);
}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .article-layout{grid-template-columns:1fr;gap:24px;}
  .article-aside{order:2;}
  .article-main{padding:32px 28px 28px;}
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;padding:44px 0 28px;}
  .section{padding-top:56px;}
  .search-box{width:190px;}
  .channel-bar{display:none;}
  .channel-bar.is-open{display:block;}
  .channel-bar-inner{flex-direction:column;align-items:stretch;gap:8px;padding:12px 0 16px;min-height:0;}
  .channel-nav{flex-direction:column;align-items:stretch;gap:2px;overflow:visible;}
  .nav-link{padding:12px 14px;border-radius:10px;}
  .nav-link.is-active::after{display:none;}
  .hot-chips{margin-left:0;flex-wrap:wrap;}
  .menu-toggle{display:inline-flex;}
  .icon-btn{display:grid;}
}
@media (max-width:767px){
  html body .container{padding-left:16px;padding-right:16px;}
  .search-box,.ghost-link,.topbar-tools .btn{display:none;}
  .topbar-inner{height:56px;}
  .article-head{padding:12px 0 20px;}
  .article-main{padding:24px 18px 22px;border-radius:12px;}
  .prose-mk{font-size:16.5px;line-height:1.85;}
  .prose-mk h2{font-size:21px;padding-left:11px;}
  .prose-mk h3{font-size:18px;}
  .prose-mk table{display:block;overflow-x:auto;white-space:nowrap;}
  .rel-grid{grid-template-columns:1fr;gap:16px;}
  .post-nav{grid-template-columns:1fr;}
  .section{padding-top:48px;}
  .section-head h2{font-size:22px;}
  .cta-content{padding:30px 22px;}
  .cta-content h2{font-size:22px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1;}
  .footer-grid{grid-template-columns:1fr;gap:24px;}
  .footer-sub{flex-direction:column;}
  .footer-sub .btn{width:100%;}
}
@media (max-width:520px){
  .article-title{font-size:24px;}
  .article-back{gap:8px;}
  .article-back .btn{flex:1;}
  .breadcrumb .current{max-width:100%;}
}

/* roulang page: category1 */
:root{
  --brand:#2B6C8F;
  --brand-deep:#1D4E68;
  --brand-soft:#E8F0F5;
  --brand-10:rgba(43,108,143,.10);
  --accent:#C08A3E;
  --accent-soft:#F6EEDF;
  --accent-deep:#8A5F26;
  --bg:#F6F7F8;
  --surface:#FFFFFF;
  --surface-2:#F0F3F5;
  --text:#16232E;
  --text-2:#5A6B78;
  --text-3:#8A97A1;
  --border:#E3E7EB;
  --divider:#EDF0F2;
  --success:#2F7D5B;
  --warn:#B4553F;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --radius-field:8px;
  --shadow-sm:0 1px 2px rgba(22,35,46,.05);
  --shadow-md:0 6px 18px rgba(22,35,46,.07);
  --shadow-lg:0 14px 34px rgba(22,35,46,.10);
  --header-offset:112px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",system-ui,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input,select{font:inherit;color:inherit;}
button{cursor:pointer;background:none;border:none;padding:0;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:2px solid rgba(43,108,143,.55);outline-offset:2px;border-radius:6px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
@media (min-width:1280px){ .container{max-width:1280px;} }
@media (max-width:1023px){ .container{padding:0 20px;} }
@media (max-width:639px){ .container{padding:0 16px;} }

/* ---------- 顶部信息条 ---------- */
.top-strip{
  background:var(--brand-deep);
  color:#DCEAF2;
  font-size:13px;
  letter-spacing:.01em;
  overflow:hidden;
  max-height:38px;
  transition:max-height .25s ease, opacity .25s ease;
}
.top-strip .container{display:flex;align-items:center;justify-content:space-between;gap:16px;height:38px;}
.top-strip a{color:#fff;border-bottom:1px solid rgba(255,255,255,.4);}
.top-strip a:hover{color:#F6EEDF;border-color:#F6EEDF;}
.top-strip .strip-left{display:flex;align-items:center;gap:10px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.top-strip i{color:var(--accent);}
body.is-scrolled .top-strip{max-height:0;opacity:0;}
@media (max-width:639px){ .top-strip .strip-right{display:none;} }

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(255,255,255,.96);
  backdrop-filter:saturate(140%) blur(6px);
  border-bottom:1px solid var(--border);
  transition:box-shadow .2s ease;
}
body.is-scrolled .site-header{box-shadow:var(--shadow-sm);}
.brand-row{display:flex;align-items:center;justify-content:space-between;gap:20px;padding-top:14px;padding-bottom:14px;transition:padding .2s ease;}
body.is-scrolled .brand-row{padding-top:8px;padding-bottom:8px;}
.logo{display:inline-flex;align-items:center;gap:10px;}
.logo-mark{
  width:38px;height:38px;border-radius:10px;
  background:linear-gradient(145deg,var(--brand),var(--brand-deep));
  color:#fff;font-weight:700;font-size:15px;letter-spacing:.04em;
  display:inline-flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow-sm);flex:0 0 38px;
  transition:transform .2s ease;
}
.logo:hover .logo-mark{transform:translateY(-1px);}
.logo-text{display:flex;flex-direction:column;line-height:1.15;}
.logo-main{font-size:17px;font-weight:700;letter-spacing:.01em;color:var(--text);}
.logo-sub{font-size:11px;color:var(--text-3);letter-spacing:.18em;}

.brand-actions{display:flex;align-items:center;gap:12px;}
.search-box{
  display:flex;align-items:center;gap:8px;
  background:var(--surface-2);
  border:1px solid transparent;
  border-radius:var(--radius-field);
  padding:0 12px;height:40px;width:250px;
  transition:background .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.search-box:focus-within{background:#fff;border-color:var(--brand);box-shadow:0 0 0 3px rgba(43,108,143,.14);}
.search-box i{color:var(--text-3);font-size:14px;}
.search-box input{border:none;background:none;outline:none;width:100%;font-size:14px;}
.search-box input::placeholder{color:var(--text-3);}
.header-quick{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;color:var(--text-2);
  padding:8px 10px;border-radius:var(--radius-field);
  transition:color .2s ease,background .2s ease;
}
.header-quick:hover{color:var(--brand-deep);background:var(--brand-10);}
.menu-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--border);
  border-radius:var(--radius-field);align-items:center;justify-content:center;
  color:var(--brand-deep);background:#fff;
}
.menu-toggle:hover{background:var(--brand-soft);}
@media (max-width:1023px){
  .search-box{display:none;}
  .header-quick{display:none;}
  .menu-toggle{display:inline-flex;}
}
@media (max-width:639px){
  .brand-actions .btn{display:none;}
}

/* ---------- 频道条 ---------- */
.channel-bar{border-top:1px solid var(--divider);background:rgba(250,251,252,.9);}
.channel-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:50px;transition:height .2s ease;}
body.is-scrolled .channel-inner{height:44px;}
.channel-nav{display:flex;align-items:center;gap:6px;overflow-x:auto;scrollbar-width:none;}
.channel-nav::-webkit-scrollbar{display:none;}
.nav-link{
  position:relative;
  display:inline-block;
  padding:15px 14px;
  font-size:15px;color:var(--text-2);
  white-space:nowrap;
  transition:color .2s ease;
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:8px;height:2px;
  background:var(--brand);border-radius:2px;transform:scaleX(0);transform-origin:center;
  transition:transform .2s ease;
}
.nav-link:hover{color:var(--brand-deep);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--brand-deep);font-weight:600;}
.nav-link.is-active::after{transform:scaleX(1);}
.channel-trends{display:flex;align-items:center;gap:8px;white-space:nowrap;}
.trend-label{font-size:12px;color:var(--text-3);letter-spacing:.06em;}
.trend-chip{
  display:inline-flex;align-items:center;gap:5px;
  font-size:12.5px;color:var(--brand-deep);
  background:var(--brand-soft);border-radius:999px;
  padding:4px 11px;transition:background .2s ease,color .2s ease;
}
.trend-chip:hover{background:rgba(43,108,143,.2);}
.trend-chip i{color:var(--accent);font-size:11px;}
@media (max-width:1023px){
  .channel-bar{display:none;}
}

/* ---------- 移动抽屉 ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(22,35,46,.42);
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;z-index:80;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);
  background:#fff;z-index:90;transform:translateX(100%);
  transition:transform .28s ease;display:flex;flex-direction:column;
  box-shadow:var(--shadow-lg);
}
.mobile-drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid var(--divider);}
.drawer-body{padding:18px 20px;overflow-y:auto;display:flex;flex-direction:column;gap:22px;}
.drawer-group-title{font-size:12px;color:var(--text-3);letter-spacing:.14em;margin-bottom:8px;}
.drawer-link{display:flex;align-items:center;justify-content:space-between;padding:12px 0;border-bottom:1px solid var(--divider);font-size:15px;color:var(--text-2);}
.drawer-link.is-active{color:var(--brand-deep);font-weight:600;}
.drawer-link i{font-size:12px;color:var(--text-3);}
.drawer-search{display:flex;align-items:center;gap:8px;background:var(--surface-2);border-radius:var(--radius-field);padding:0 12px;height:44px;}
.drawer-search input{border:none;background:none;outline:none;width:100%;font-size:14px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-btn);font-size:15px;font-weight:600;
  padding:11px 22px;border:1px solid transparent;
  transition:background .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease,transform .2s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--shadow-sm);}
.btn-primary:hover{background:var(--brand-deep);transform:translateY(-1px);box-shadow:var(--shadow-md);}
.btn-primary:active{transform:translateY(0);box-shadow:var(--shadow-sm);}
.btn-outline{background:#fff;color:var(--brand);border-color:var(--brand);}
.btn-outline:hover{background:var(--brand-10);transform:translateY(-1px);}
.btn-accent{background:var(--accent);color:#fff;}
.btn-accent:hover{background:#A9772F;transform:translateY(-1px);box-shadow:var(--shadow-md);}
.btn-ghost{background:transparent;color:var(--text-2);border-color:var(--border);}
.btn-ghost:hover{background:var(--surface-2);color:var(--brand-deep);}
.btn-sm{padding:8px 16px;font-size:14px;}
.btn-xs{padding:6px 12px;font-size:13px;border-radius:8px;}
.btn-block{width:100%;}
.btn:disabled{opacity:.45;box-shadow:none;cursor:not-allowed;}
.icon-btn{
  width:34px;height:34px;border-radius:9px;border:1px solid var(--border);
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--text-2);background:#fff;transition:all .2s ease;
}
.icon-btn:hover{color:var(--brand);border-color:var(--brand);background:var(--brand-10);}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:5px;
  font-size:12px;font-weight:600;border-radius:999px;padding:3px 10px;
  letter-spacing:.02em;
}
.badge-brand{background:var(--brand-soft);color:var(--brand-deep);}
.badge-accent{background:var(--accent-soft);color:var(--accent-deep);}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13.5px;color:var(--text-2);
  background:#fff;border:1px solid var(--border);
  border-radius:999px;padding:7px 14px;
  transition:all .2s ease;white-space:nowrap;
}
.chip:hover{border-color:var(--brand);color:var(--brand-deep);background:var(--brand-10);}
.chip.is-active{background:var(--brand);border-color:var(--brand);color:#fff;font-weight:600;}
.chip.is-active:hover{background:var(--brand-deep);}

/* ---------- 页面横幅 ---------- */
.page-hero{
  position:relative;
  background-image:linear-gradient(100deg,rgba(18,36,50,.86),rgba(29,78,104,.62)),url("/assets/images/backpic/back-1.webp");
  background-size:cover;
  background-position:center;
  color:#fff;
  padding:34px 0 40px;
}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13.5px;color:rgba(255,255,255,.72);margin-bottom:14px;}
.breadcrumb a{color:rgba(255,255,255,.82);transition:color .2s ease;}
.breadcrumb a:hover{color:#fff;text-decoration:underline;}
.breadcrumb .sep{opacity:.55;}
.breadcrumb [aria-current]{color:#fff;}
.page-hero h1{
  font-size:clamp(28px,4vw,42px);
  line-height:1.28;
  font-weight:700;
  letter-spacing:-.01em;
  max-width:820px;
}
.page-hero-sub{
  margin-top:14px;
  max-width:720px;
  font-size:15.5px;
  line-height:1.85;
  color:rgba(255,255,255,.86);
}
.page-hero-meta{display:flex;flex-wrap:wrap;gap:14px 34px;margin-top:24px;}
.page-hero-meta div{display:flex;align-items:baseline;gap:8px;font-size:13.5px;color:rgba(255,255,255,.78);}
.page-hero-meta strong{font-size:22px;font-weight:700;color:#fff;letter-spacing:.01em;}
.page-hero-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px;}
.page-hero-tags span{
  font-size:12.5px;color:#EAF3F8;
  background:rgba(255,255,255,.14);
  border:1px solid rgba(255,255,255,.22);
  border-radius:999px;padding:5px 13px;
}
@media (max-width:639px){
  .page-hero{padding:26px 0 30px;}
  .page-hero-meta{gap:12px 22px;}
  .page-hero-meta strong{font-size:19px;}
}

/* ---------- 板块 ---------- */
.section{padding:84px 0;}
.section-tight{padding:56px 0;}
@media (max-width:1023px){ .section{padding:62px 0;} .section-tight{padding:44px 0;} }
@media (max-width:639px){ .section{padding:48px 0;} .section-tight{padding:36px 0;} }

.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px;}
.section-title{font-size:clamp(21px,2.4vw,28px);font-weight:700;letter-spacing:-.01em;}
.section-title .title-bar{display:inline-block;width:6px;height:22px;background:var(--accent);border-radius:3px;margin-right:12px;vertical-align:-3px;}
.section-sub{margin-top:8px;font-size:14.5px;color:var(--text-2);}
.more-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--brand);white-space:nowrap;transition:color .2s ease,gap .2s ease;}
.more-link:hover{color:var(--brand-deep);gap:10px;}

/* ---------- 目录布局 ---------- */
.catalog-layout{display:grid;grid-template-columns:248px minmax(0,1fr);gap:28px;align-items:start;}
@media (max-width:1023px){ .catalog-layout{grid-template-columns:1fr;gap:18px;} }

/* 筛选栏 */
.filter-panel{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-sm);
  padding:20px;
  position:sticky;
  top:calc(var(--header-offset) + 12px);
}
.filter-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:6px;}
.filter-title{font-size:16px;font-weight:700;}
.filter-close{display:none;width:32px;height:32px;border-radius:8px;color:var(--text-2);align-items:center;justify-content:center;}
.filter-close:hover{background:var(--surface-2);}
.filter-group{padding:16px 0;border-bottom:1px solid var(--divider);}
.filter-group:last-of-type{border-bottom:none;}
.filter-group-title{font-size:13px;font-weight:600;color:var(--text);letter-spacing:.04em;margin-bottom:10px;}
.filter-list li + li{margin-top:2px;}
.filter-item{
  display:flex;align-items:center;justify-content:space-between;
  width:100%;text-align:left;font-size:14.5px;color:var(--text-2);
  padding:8px 10px;border-radius:8px;transition:all .18s ease;
}
.filter-item:hover{background:var(--surface-2);color:var(--brand-deep);}
.filter-item.is-active{background:var(--brand-soft);color:var(--brand-deep);font-weight:600;}
.filter-item .count{font-size:12px;color:var(--text-3);}
.filter-item.is-active .count{color:var(--brand);}
.filter-chips{display:flex;flex-wrap:wrap;gap:8px;}
.filter-chips .chip{font-size:13px;padding:6px 12px;}
.filter-reset{margin-top:18px;}
@media (max-width:1023px){
  .filter-panel{
    position:fixed;left:0;right:0;bottom:0;top:auto;
    max-height:78vh;overflow-y:auto;
    border-radius:18px 18px 0 0;
    transform:translateY(105%);
    transition:transform .3s ease;
    z-index:95;
    box-shadow:var(--shadow-lg);
    padding:18px 18px 26px;
  }
  .filter-panel.is-open{transform:translateY(0);}
  .filter-close{display:inline-flex;}
}

/* 移动筛选条 */
.mobile-filter-bar{display:none;align-items:center;gap:10px;margin-bottom:16px;}
.mobile-chip-scroll{display:flex;gap:8px;overflow-x:auto;scrollbar-width:none;padding-bottom:2px;}
.mobile-chip-scroll::-webkit-scrollbar{display:none;}
@media (max-width:1023px){ .mobile-filter-bar{display:flex;} }

/* 工具条 */
.toolbar{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-card);
  padding:14px 18px;box-shadow:var(--shadow-sm);margin-bottom:20px;
}
.toolbar-count{font-size:14px;color:var(--text-2);}
.toolbar-count strong{color:var(--brand-deep);font-size:17px;font-weight:700;margin:0 3px;}
.toolbar-right{display:flex;align-items:center;gap:12px;}
.sort-select{
  border:1px solid var(--border);border-radius:var(--radius-field);
  padding:8px 12px;font-size:14px;color:var(--text-2);background:#fff;outline:none;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.sort-select:hover{border-color:var(--brand);}
.sort-select:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(43,108,143,.14);}
.view-switch{display:flex;gap:4px;background:var(--surface-2);border-radius:var(--radius-field);padding:4px;}
.view-btn{width:34px;height:30px;border-radius:6px;color:var(--text-3);display:inline-flex;align-items:center;justify-content:center;transition:all .2s ease;}
.view-btn:hover{color:var(--brand);}
.view-btn.is-active{background:#fff;color:var(--brand-deep);box-shadow:var(--shadow-sm);}

/* 商品网格 */
.product-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
@media (max-width:1279px){ .product-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;} }
@media (max-width:1023px){ .product-grid{grid-template-columns:repeat(2,minmax(0,1fr));} }
@media (max-width:599px){ .product-grid{grid-template-columns:1fr;} }

.product-card{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-md);
  display:flex;flex-direction:column;
  transition:box-shadow .22s ease,transform .22s ease,border-color .22s ease;
}
.product-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-2px);border-color:#D5DDE3;}
.product-media{position:relative;display:block;aspect-ratio:4/3;background:var(--surface-2);overflow:hidden;}
.product-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.product-card:hover .product-media img{transform:scale(1.04);}
.product-media .badge{position:absolute;left:12px;top:12px;background:rgba(255,255,255,.94);color:var(--brand-deep);box-shadow:var(--shadow-sm);}
.product-body{padding:16px;display:flex;flex-direction:column;gap:8px;flex:1;}
.product-title{font-size:16px;font-weight:600;line-height:1.55;}
.product-title a{transition:color .2s ease;}
.product-title a:hover{color:var(--brand);}
.product-spec{font-size:13px;color:var(--text-2);line-height:1.7;}
.product-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:10px;padding-top:10px;border-top:1px solid var(--divider);}
.price{font-size:15px;font-weight:700;color:var(--accent-deep);letter-spacing:.01em;}
.price small{font-size:12px;color:var(--text-3);font-weight:400;margin-right:4px;}
.product-actions{display:flex;align-items:center;gap:8px;}

/* 列表视图 */
.product-grid.is-list{grid-template-columns:1fr;gap:14px;}
.product-grid.is-list .product-card{flex-direction:row;}
.product-grid.is-list .product-media{width:230px;flex:0 0 230px;aspect-ratio:auto;min-height:150px;}
.product-grid.is-list .product-body{padding:18px 20px;}
@media (max-width:639px){
  .product-grid.is-list .product-card{flex-direction:column;}
  .product-grid.is-list .product-media{width:100%;flex:none;aspect-ratio:4/3;}
}

/* 分页 */
.pagination{display:flex;align-items:center;justify-content:center;gap:8px;margin-top:36px;flex-wrap:wrap;}
.page-btn{
  min-width:40px;height:40px;padding:0 12px;border-radius:999px;
  border:1px solid var(--border);background:#fff;color:var(--text-2);
  font-size:14px;display:inline-flex;align-items:center;justify-content:center;
  transition:all .2s ease;
}
.page-btn:hover{border-color:var(--brand);color:var(--brand-deep);background:var(--brand-10);}
.page-btn.is-active{background:var(--brand);border-color:var(--brand);color:#fff;font-weight:600;}
.page-btn:disabled{opacity:.45;cursor:not-allowed;}

/* ---------- 选购要点 ---------- */
.point-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-card);box-shadow:var(--shadow-sm);overflow:hidden;}
.point-item{padding:26px 24px;border-right:1px solid var(--divider);}
.point-item:last-child{border-right:none;}
.point-item i{font-size:22px;color:var(--brand);}
.point-item h3{font-size:16px;font-weight:700;margin:14px 0 8px;}
.point-item p{font-size:13.5px;color:var(--text-2);line-height:1.8;}
@media (max-width:1023px){
  .point-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .point-item{border-right:1px solid var(--divider);border-bottom:1px solid var(--divider);}
  .point-item:nth-child(2n){border-right:none;}
  .point-item:nth-last-child(-n+2){border-bottom:none;}
}
@media (max-width:599px){
  .point-grid{grid-template-columns:1fr;}
  .point-item{border-right:none!important;border-bottom:1px solid var(--divider)!important;padding:20px;}
  .point-item:last-child{border-bottom:none!important;}
}

/* ---------- 横向滚动卡片 ---------- */
.rail{
  display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding-bottom:12px;scrollbar-width:thin;
}
.rail::-webkit-scrollbar{height:6px;}
.rail::-webkit-scrollbar-thumb{background:#D3DBE1;border-radius:999px;}
.rail::-webkit-scrollbar-track{background:transparent;}
.rail-item{scroll-snap-align:start;flex:0 0 calc((100% - 60px)/4);min-width:0;}
@media (max-width:1023px){
  .rail-item{flex:0 0 calc((100% - 40px)/3);}
}
@media (max-width:767px){
  .rail-item{flex:0 0 calc((100% - 20px)/2);}
}
@media (max-width:519px){
  .rail-item{flex:0 0 86%;}
}
.rail-card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-sm);height:100%;
  display:flex;flex-direction:column;
  transition:box-shadow .22s ease,transform .22s ease;
}
.rail-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-2px);}
.rail-card .thumb{aspect-ratio:16/10;overflow:hidden;background:var(--surface-2);}
.rail-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.rail-card:hover .thumb img{transform:scale(1.05);}
.rail-card .body{padding:14px 16px 18px;display:flex;flex-direction:column;gap:8px;flex:1;}
.rail-card h3{font-size:15px;font-weight:600;line-height:1.55;}
.rail-card p{font-size:13px;color:var(--text-2);line-height:1.75;}
.rail-card .meta{margin-top:auto;font-size:12.5px;color:var(--text-3);display:flex;align-items:center;gap:12px;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:880px;margin:0 auto;display:flex;flex-direction:column;gap:12px;}
.faq-item{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-sm);
  transition:box-shadow .2s ease,border-color .2s ease;
}
.faq-item:hover{box-shadow:var(--shadow-md);}
.faq-item[open]{box-shadow:inset 3px 0 0 var(--brand),var(--shadow-md);border-color:var(--brand-soft);}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;font-size:16px;font-weight:600;color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-icon{position:relative;width:20px;height:20px;flex:0 0 20px;}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--brand);border-radius:2px;
  transform:translate(-50%,-50%);transition:transform .25s ease,opacity .25s ease;
}
.faq-icon::before{width:13px;height:2px;}
.faq-icon::after{width:2px;height:13px;}
.faq-item[open] .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0;}
.faq-a{padding:0 22px 20px 22px;font-size:14.5px;color:var(--text-2);line-height:1.9;}

/* ---------- CTA ---------- */
.cta-band{
  background:linear-gradient(135deg,rgba(43,108,143,.08),rgba(246,238,223,.55));
  border:1px solid var(--border);
  border-radius:18px;
  padding:44px 46px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  box-shadow:var(--shadow-sm);
}
.cta-band h2{font-size:clamp(20px,2.4vw,26px);font-weight:700;letter-spacing:-.01em;}
.cta-band p{margin-top:10px;font-size:14.5px;color:var(--text-2);max-width:640px;}
.cta-actions{display:flex;gap:12px;flex:0 0 auto;}
@media (max-width:899px){
  .cta-band{flex-direction:column;align-items:flex-start;padding:30px 24px;}
  .cta-actions{width:100%;flex-wrap:wrap;}
  .cta-actions .btn{flex:1;min-width:150px;}
}

/* ---------- 页脚 ---------- */
.site-footer{margin-top:64px;background:#14212B;color:#B9C6CF;padding:56px 0 26px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.3fr;gap:36px;}
@media (max-width:1023px){ .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px;} }
@media (max-width:599px){ .footer-grid{grid-template-columns:1fr;gap:24px;} }
.site-footer .logo-mark{background:linear-gradient(145deg,var(--brand),var(--brand-deep));}
.site-footer .logo-main{color:#fff;}
.site-footer .logo-sub{color:#89A0AF;}
.footer-desc{margin-top:14px;font-size:13.5px;line-height:1.85;color:#93A6B2;max-width:300px;}
.footer-title{font-size:14px;font-weight:700;color:#fff;margin-bottom:14px;letter-spacing:.04em;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{font-size:13.5px;color:#9FB1BC;transition:color .2s ease,padding-left .2s ease;}
.footer-links a:hover{color:#fff;padding-left:3px;}
.footer-contact{display:flex;flex-direction:column;gap:8px;font-size:13.5px;color:#9FB1BC;}
.footer-contact strong{color:#E4EDF2;font-weight:600;}
.footer-sub{display:flex;gap:8px;margin-top:14px;}
.footer-sub input{
  flex:1;min-width:0;height:40px;padding:0 12px;border-radius:var(--radius-field);
  border:1px solid #2A3B47;background:#1B2A34;color:#DDE7ED;font-size:13.5px;outline:none;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.footer-sub input::placeholder{color:#7A8C98;}
.footer-sub input:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(43,108,143,.25);}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid #24343F;
  display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:12.5px;color:#7F909B;
}
@media (max-width:599px){ .footer-bottom{flex-direction:column;align-items:flex-start;} }

/* roulang page: category2 */
:root{
    --brand:#2B6C8F;
    --brand-dark:#1D4E68;
    --brand-light:#E8F0F5;
    --brand-10:rgba(43,108,143,.10);
    --accent:#C08A3E;
    --accent-light:#F6EEDF;
    --accent-dark:#8A5A2B;
    --bg:#F6F7F8;
    --surface:#FFFFFF;
    --surface-2:#F0F3F5;
    --text:#16232E;
    --text-2:#5A6B78;
    --text-3:#8A97A1;
    --border:#E3E7EB;
    --divider:#EDF0F2;
    --ok:#2F7D5B;
    --warn:#B4553F;

    --r-card:14px;
    --r-btn:10px;
    --r-img:12px;
    --r-input:8px;

    --sh-sm:0 1px 2px rgba(22,35,46,.05);
    --sh-md:0 6px 18px rgba(22,35,46,.07);
    --sh-lg:0 14px 34px rgba(22,35,46,.10);

    --sp-1:16px;
    --sp-2:24px;
    --sp-3:32px;
    --sec-y:88px;
    --header-h:118px;
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--bg);
    color:var(--text);
    font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
    font-size:16px;
    line-height:1.8;
    letter-spacing:0;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;}
  button{font-family:inherit;}
  input,textarea,select{font-family:inherit;}
  ul,ol{margin:0;padding:0;list-style:none;}
  h1,h2,h3,h4,p{margin:0;}
  h1,h2,h3,h4{line-height:1.35;font-weight:700;letter-spacing:-.01em;}

  ::selection{background:rgba(43,108,143,.18);}

  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
  .container-wide{max-width:1280px;}

  a:focus-visible,
  button:focus-visible,
  input:focus-visible,
  summary:focus-visible{
    outline:none;
    box-shadow:0 0 0 2px rgba(43,108,143,.40);
    border-radius:8px;
  }

  /* ============ 顶部导航 ============ */
  .site-header{
    position:sticky;
    top:0;
    z-index:60;
    background:rgba(255,255,255,.96);
    backdrop-filter:saturate(150%) blur(6px);
    border-bottom:1px solid transparent;
    transition:box-shadow .2s ease,border-color .2s ease,background .2s ease;
  }
  .site-header.is-stuck{
    box-shadow:var(--sh-sm);
    border-bottom-color:var(--border);
  }

  .topbar{padding:14px 0;transition:padding .2s ease;}
  .site-header.is-stuck .topbar{padding:8px 0;}
  .topbar-inner{
    display:flex;
    align-items:center;
    gap:20px;
  }

  .logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
  .logo-mark{
    width:40px;height:40px;border-radius:12px;
    background:linear-gradient(140deg,var(--brand) 0%,var(--brand-dark) 100%);
    color:#fff;font-weight:700;font-size:15px;letter-spacing:.06em;
    display:inline-flex;align-items:center;justify-content:center;
    box-shadow:var(--sh-sm);
    transition:transform .2s ease;
  }
  .logo:hover .logo-mark{transform:translateY(-1px);}
  .logo-text{display:flex;flex-direction:column;line-height:1.15;}
  .logo-main{font-size:18px;font-weight:700;color:var(--text);}
  .logo-sub{font-size:12px;color:var(--text-3);letter-spacing:.14em;}

  .topbar-search{
    position:relative;
    flex:1 1 auto;
    max-width:420px;
    display:flex;
    align-items:center;
  }
  .topbar-search i{
    position:absolute;left:14px;font-size:14px;color:var(--text-3);pointer-events:none;
  }
  .topbar-search input{
    width:100%;
    padding:10px 14px 10px 38px;
    border:1px solid var(--border);
    border-radius:var(--r-input);
    background:var(--surface-2);
    font-size:14px;
    color:var(--text);
    transition:background .2s ease,border-color .2s ease,box-shadow .2s ease;
  }
  .topbar-search input::placeholder{color:var(--text-3);}
  .topbar-search input:hover{background:#fff;}
  .topbar-search input:focus{
    background:#fff;
    border-color:var(--brand);
    box-shadow:0 0 0 2px rgba(43,108,143,.18);
    outline:none;
  }

  .topbar-actions{margin-left:auto;display:flex;align-items:center;gap:12px;}
  .ghost-link{
    display:inline-flex;align-items:center;gap:6px;
    font-size:14px;color:var(--text-2);
    padding:8px 10px;border-radius:var(--r-btn);
    transition:color .2s ease,background .2s ease;
  }
  .ghost-link:hover{color:var(--brand-dark);background:var(--brand-10);}
  .ghost-link i{font-size:14px;}

  .menu-toggle{
    display:none;
    width:44px;height:44px;
    align-items:center;justify-content:center;
    border:1px solid var(--border);
    border-radius:var(--r-btn);
    background:#fff;color:var(--text);
    cursor:pointer;
    transition:background .2s ease,border-color .2s ease;
  }
  .menu-toggle:hover{background:var(--brand-light);border-color:var(--brand-light);}

  .channel-bar{
    border-top:1px solid var(--divider);
    background:rgba(255,255,255,.9);
  }
  .channel-inner{
    display:flex;
    align-items:center;
    gap:20px;
    min-height:46px;
  }
  .channel-nav{display:flex;align-items:center;gap:4px;overflow-x:auto;scrollbar-width:none;}
  .channel-nav::-webkit-scrollbar{display:none;}
  .nav-link{
    position:relative;
    display:inline-flex;align-items:center;
    padding:12px 14px;
    font-size:15px;
    color:var(--text-2);
    white-space:nowrap;
    border-bottom:2px solid transparent;
    transition:color .2s ease,border-color .2s ease,background .2s ease;
  }
  .nav-link:hover{color:var(--brand-dark);background:var(--brand-10);border-radius:8px 8px 0 0;}
  .nav-link.is-active{
    color:var(--brand-dark);
    font-weight:600;
    border-bottom-color:var(--brand);
  }

  .hot-chips{display:flex;align-items:center;gap:8px;margin-left:auto;flex-wrap:nowrap;}
  .chip{
    display:inline-flex;align-items:center;gap:6px;
    padding:5px 12px;
    border-radius:999px;
    background:var(--surface-2);
    color:var(--text-2);
    font-size:12px;
    white-space:nowrap;
    transition:background .2s ease,color .2s ease,transform .2s ease;
  }
  .chip:hover{background:var(--brand-light);color:var(--brand-dark);transform:translateY(-1px);}
  .chip i{font-size:11px;color:var(--accent);}

  /* ============ 按钮 ============ */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    padding:12px 22px;
    border-radius:var(--r-btn);
    border:1px solid transparent;
    font-size:15px;font-weight:600;line-height:1.2;
    cursor:pointer;
    transition:background .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease,transform .2s ease;
  }
  .btn i{font-size:14px;}
  .btn-primary{
    background:var(--brand);
    color:#fff;
    box-shadow:var(--sh-sm);
  }
  .btn-primary:hover{background:var(--brand-dark);box-shadow:var(--sh-md);transform:translateY(-1px);}
  .btn-primary:active{transform:translateY(0);box-shadow:var(--sh-sm);}
  .btn-outline{
    background:#fff;
    color:var(--brand-dark);
    border-color:var(--brand);
  }
  .btn-outline:hover{background:var(--brand-10);box-shadow:var(--sh-sm);}
  .btn-accent{
    background:var(--accent);
    color:#fff;
  }
  .btn-accent:hover{background:var(--accent-dark);transform:translateY(-1px);}
  .btn-ghost{
    background:transparent;
    color:var(--text-2);
    border-color:var(--border);
  }
  .btn-ghost:hover{background:#fff;color:var(--brand-dark);border-color:var(--brand);}
  .btn-sm{padding:8px 14px;font-size:13px;border-radius:8px;}
  .btn-lg{padding:14px 28px;font-size:16px;}

  /* ============ 面包屑 ============ */
  .breadcrumb{
    display:flex;align-items:center;flex-wrap:wrap;gap:8px;
    font-size:14px;
    color:rgba(255,255,255,.78);
  }
  .breadcrumb a{color:rgba(255,255,255,.86);transition:color .2s ease;}
  .breadcrumb a:hover{color:#fff;text-decoration:underline;}
  .breadcrumb .sep{opacity:.55;font-size:12px;}
  .breadcrumb .current{color:#fff;}

  /* ============ 频道横幅 ============ */
  .page-banner{
    position:relative;
    overflow:hidden;
    min-height:280px;
    display:flex;
    align-items:flex-end;
    background:var(--brand-dark);
  }
  .banner-media{position:absolute;inset:0;}
  .banner-media img{width:100%;height:100%;object-fit:cover;}
  .banner-media::after{
    content:"";
    position:absolute;inset:0;
    background:linear-gradient(100deg,rgba(20,36,48,.86) 0%,rgba(23,62,84,.72) 52%,rgba(23,62,84,.40) 100%);
  }
  .banner-inner{
    position:relative;
    z-index:2;
    padding-top:56px;
    padding-bottom:44px;
    max-width:820px;
  }
  .page-banner h1{
    margin-top:14px;
    font-size:clamp(28px,4vw,42px);
    color:#fff;
    letter-spacing:-.01em;
  }
  .banner-sub{
    margin-top:12px;
    font-size:16px;
    color:rgba(255,255,255,.86);
    line-height:1.85;
    max-width:640px;
  }
  .banner-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px;}
  .banner-tags span{
    padding:5px 12px;
    border-radius:999px;
    font-size:12px;
    color:#fff;
    background:rgba(255,255,255,.14);
    border:1px solid rgba(255,255,255,.22);
  }

  /* ============ 通用板块 ============ */
  .section{padding:var(--sec-y) 0;}
  .section-tight{padding:56px 0;}
  .surface{background:var(--surface);}
  .surface-2{background:var(--surface-2);}
  .sec-head{margin-bottom:36px;}
  .sec-head .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    font-size:12px;letter-spacing:.16em;font-weight:600;
    color:var(--accent);
    text-transform:uppercase;
  }
  .sec-head .eyebrow::before{
    content:"";width:22px;height:2px;border-radius:2px;background:var(--accent);
  }
  .sec-head h2{
    margin-top:10px;
    font-size:clamp(22px,2.6vw,30px);
    color:var(--text);
  }
  .sec-head p{
    margin-top:12px;
    font-size:15px;
    color:var(--text-2);
    max-width:720px;
  }

  .lead{
    font-size:17px;
    line-height:1.9;
    color:var(--text-2);
  }
  .lead strong{color:var(--text);}

  /* ============ 参数细条 ============ */
  .spec-strip{
    display:grid;
    grid-template-columns:repeat(4,1fr);
    background:var(--surface);
    border:1px solid var(--border);
    border-radius:var(--r-card);
    box-shadow:var(--sh-sm);
    overflow:hidden;
  }
  .spec-item{
    padding:24px 22px;
    border-right:1px solid var(--divider);
    transition:background .2s ease;
  }
  .spec-item:last-child{border-right:none;}
  .spec-item:hover{background:var(--brand-light);}
  .spec-item .spec-label{
    display:flex;align-items:center;gap:8px;
    font-size:13px;color:var(--text-3);
  }
  .spec-item .spec-label i{color:var(--brand);font-size:13px;}
  .spec-item .spec-value{
    margin-top:10px;
    font-size:22px;font-weight:700;color:var(--brand-dark);
    letter-spacing:-.01em;
  }
  .spec-item .spec-note{
    margin-top:6px;
    font-size:13px;color:var(--text-2);line-height:1.7;
  }

  /* ============ 大图段 ============ */
  .figure-full{
    border-radius:var(--r-card);
    overflow:hidden;
    box-shadow:var(--sh-md);
    background:var(--surface);
  }
  .figure-full img{width:100%;height:clamp(220px,38vw,420px);object-fit:cover;}
  .figure-caption{
    padding:14px 18px;
    font-size:13px;
    color:var(--text-3);
    border-top:1px solid var(--divider);
    background:#fff;
  }

  /* ============ 交替图文 ============ */
  .split{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:48px;
    align-items:center;
  }
  .split + .split{margin-top:72px;}
  .split.reverse .split-media{order:-1;}
  .split-media{
    border-radius:var(--r-card);
    overflow:hidden;
    box-shadow:var(--sh-md);
    background:var(--surface);
    transition:box-shadow .25s ease,transform .25s ease;
  }
  .split-media:hover{box-shadow:var(--sh-lg);transform:translateY(-2px);}
  .split-media img{width:100%;aspect-ratio:3/2;object-fit:cover;}
  .split-body h3{
    font-size:20px;
    color:var(--text);
  }
  .split-body .kicker{
    display:inline-flex;align-items:center;gap:8px;
    font-size:12px;font-weight:600;letter-spacing:.14em;
    color:var(--brand);
    margin-bottom:10px;
  }
  .split-body .kicker::before{
    content:"";width:16px;height:2px;border-radius:2px;background:var(--brand);
  }
  .split-body p{
    margin-top:14px;
    font-size:15.5px;
    line-height:1.9;
    color:var(--text-2);
  }
  .check-list{margin-top:18px;display:grid;gap:10px;}
  .check-list li{
    display:flex;align-items:flex-start;gap:10px;
    font-size:14.5px;color:var(--text-2);line-height:1.75;
  }
  .check-list i{
    margin-top:6px;
    font-size:12px;
    color:var(--brand);
    flex:0 0 auto;
  }
  .figure-note{
    margin-top:16px;
    font-size:13px;
    color:var(--text-3);
  }

  /* ============ 材质色板 ============ */
  .swatch-grid{
    display:grid;
    grid-template-columns:repeat(6,1fr);
    gap:20px;
  }
  .swatch{
    background:var(--surface);
    border:1px solid var(--border);
    border-radius:var(--r-card);
    padding:16px;
    box-shadow:var(--sh-sm);
    transition:box-shadow .2s ease,transform .2s ease,border-color .2s ease;
  }
  .swatch:hover{box-shadow:var(--sh-md);transform:translateY(-2px);border-color:var(--brand-light);}
  .swatch-color{
    height:58px;
    border-radius:10px;
    border:1px solid rgba(22,35,46,.06);
    margin-bottom:14px;
  }
  .swatch h4{font-size:15px;color:var(--text);}
  .swatch .swatch-hex{
    margin-top:4px;
    font-size:12px;
    color:var(--text-3);
    letter-spacing:.04em;
  }
  .swatch p{
    margin-top:10px;
    font-size:13px;
    line-height:1.7;
    color:var(--text-2);
  }

  /* ============ 时间线 ============ */
  .timeline{
    position:relative;
    display:grid;
    grid-template-columns:repeat(6,1fr);
    gap:18px;
    margin-top:44px;
  }
  .timeline::before{
    content:"";
    position:absolute;
    left:2%;right:2%;top:6px;
    height:1px;
    background:var(--border);
  }
  .tl-item{position:relative;padding-top:36px;}
  .tl-item::before{
    content:"";
    position:absolute;left:0;top:0;
    width:13px;height:13px;border-radius:999px;
    background:var(--brand);
    box-shadow:0 0 0 4px var(--brand-light);
    transition:transform .2s ease,background .2s ease;
  }
  .tl-item:hover::before{background:var(--accent);transform:scale(1.12);}
  .tl-stage{
    font-size:12px;
    font-weight:600;
    letter-spacing:.12em;
    color:var(--accent);
  }
  .tl-title{margin-top:6px;font-size:16px;color:var(--text);}
  .tl-desc{margin-top:6px;font-size:13.5px;line-height:1.75;color:var(--text-2);}

  /* ============ FAQ ============ */
  .faq-wrap{max-width:900px;}
  .faq-item{
    position:relative;
    background:var(--surface);
    border:1px solid var(--border);
    border-radius:12px;
    overflow:hidden;
    transition:box-shadow .2s ease,border-color .2s ease;
  }
  .faq-item + .faq-item{margin-top:12px;}
  .faq-item:hover{box-shadow:var(--sh-sm);border-color:#D8DEE3;}
  .faq-item summary{
    position:relative;
    list-style:none;
    cursor:pointer;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:16px;
    padding:18px 20px 18px 22px;
    font-size:16px;
    font-weight:600;
    color:var(--text);
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary::before{
    content:"";
    position:absolute;left:0;top:0;bottom:0;width:3px;
    background:var(--brand);
    opacity:0;
    transition:opacity .2s ease;
  }
  .faq-item[open] summary::before{opacity:1;}
  .faq-item[open] summary{color:var(--brand-dark);}
  .faq-icon{
    flex:0 0 auto;
    width:26px;height:26px;
    display:inline-flex;align-items:center;justify-content:center;
    border-radius:8px;
    background:var(--surface-2);
    color:var(--brand-dark);
    font-size:14px;
    transition:background .2s ease,transform .2s ease;
  }
  .faq-icon::before{content:"＋";}
  .faq-item[open] .faq-icon{background:var(--brand-light);transform:rotate(180deg);}
  .faq-item[open] .faq-icon::before{content:"－";}
  .faq-answer{
    padding:0 22px 20px 22px;
    font-size:15px;
    line-height:1.85;
    color:var(--text-2);
  }
  .faq-answer strong{color:var(--text);}

  /* ============ 返回频道 ============ */
  .channel-return{
    display:grid;
    grid-template-columns:340px 1fr;
    gap:36px;
    align-items:center;
    background:var(--surface);
    border:1px solid var(--border);
    border-radius:var(--r-card);
    box-shadow:var(--sh-md);
    padding:26px;
  }
  .channel-return .cr-media{
    border-radius:var(--r-img);
    overflow:hidden;
    box-shadow:var(--sh-sm);
  }
  .channel-return .cr-media img{width:100%;aspect-ratio:4/3;object-fit:cover;}
  .cr-links{display:grid;gap:10px;margin-top:18px;}
  .cr-link{
    display:flex;align-items:center;gap:12px;
    padding:13px 16px;
    border:1px solid var(--border);
    border-radius:var(--r-btn);
    background:#fff;
    font-size:14.5px;
    color:var(--text-2);
    transition:border-color .2s ease,background .2s ease,color .2s ease,transform .2s ease;
  }
  .cr-link:hover{
    border-color:var(--brand);
    background:var(--brand-10);
    color:var(--brand-dark);
    transform:translateX(2px);
  }
  .cr-link i:first-child{color:var(--brand);font-size:13px;}
  .cr-link i:last-child{margin-left:auto;font-size:12px;color:var(--text-3);}

  /* ============ CTA 条 ============ */
  .cta-band{
    background:linear-gradient(120deg,rgba(43,108,143,.08) 0%,rgba(43,108,143,.02) 60%,rgba(192,138,62,.10) 100%);
    border:1px solid var(--border);
    border-radius:var(--r-card);
    padding:36px;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:28px;
    flex-wrap:wrap;
  }
  .cta-band h2{font-size:clamp(20px,2.4vw,26px);}
  .cta-band p{margin-top:10px;font-size:15px;color:var(--text-2);max-width:620px;}
  .cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

  /* ============ 页脚 ============ */
  .site-footer{
    margin-top:64px;
    background:#122630;
    color:rgba(255,255,255,.72);
    padding:64px 0 0;
  }
  .footer-grid{
    display:grid;
    grid-template-columns:1.5fr 1fr 1fr 1.2fr;
    gap:40px;
    padding-bottom:48px;
  }
  .footer-brand .logo-mark{background:linear-gradient(140deg,#2B6C8F,#3C86AC);}
  .footer-brand .logo-main{color:#fff;}
  .footer-brand .logo-sub{color:rgba(255,255,255,.55);}
  .footer-desc{
    margin-top:18px;
    font-size:14px;
    line-height:1.85;
    color:rgba(255,255,255,.62);
    max-width:340px;
  }
  .footer-title{
    font-size:15px;
    color:#fff;
    font-weight:600;
    margin-bottom:18px;
    letter-spacing:.02em;
  }
  .footer-links{display:grid;gap:11px;}
  .footer-links a{
    font-size:14px;
    color:rgba(255,255,255,.66);
    transition:color .2s ease,transform .2s ease;
  }
  .footer-links a:hover{color:#fff;transform:translateX(2px);}
  .footer-contact{display:grid;gap:10px;font-size:14px;color:rgba(255,255,255,.66);}
  .footer-contact strong{color:#fff;font-weight:600;}
  .footer-sub{
    margin-top:18px;
    display:flex;
    gap:8px;
    align-items:center;
  }
  .footer-sub input{
    flex:1 1 auto;
    min-width:0;
    padding:10px 12px;
    border-radius:var(--r-input);
    border:1px solid rgba(255,255,255,.18);
    background:rgba(255,255,255,.06);
    color:#fff;
    font-size:14px;
    transition:border-color .2s ease,background .2s ease;
  }
  .footer-sub input::placeholder{color:rgba(255,255,255,.42);}
  .footer-sub input:focus{
    outline:none;
    border-color:var(--accent);
    background:rgba(255,255,255,.10);
  }
  .footer-bottom{
    border-top:1px solid rgba(255,255,255,.10);
    padding:22px 0;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:12px;
    flex-wrap:wrap;
    font-size:13px;
    color:rgba(255,255,255,.50);
  }

  /* ============ 响应式 ============ */
  @media (max-width:1279px){
    :root{--sec-y:80px;}
    .container{padding:0 20px;}
  }
  @media (max-width:1023px){
    :root{--sec-y:64px;}
    .topbar-search{max-width:280px;}
    .hot-chips{display:none;}
    .spec-strip{grid-template-columns:repeat(2,1fr);}
    .spec-item:nth-child(2){border-right:none;}
    .spec-item:nth-child(1),
    .spec-item:nth-child(2){border-bottom:1px solid var(--divider);}
    .swatch-grid{grid-template-columns:repeat(3,1fr);}
    .timeline{grid-template-columns:repeat(3,1fr);gap:26px 18px;}
    .timeline::before{display:none;}
    .split{gap:32px;}
    .split + .split{margin-top:56px;}
    .channel-return{grid-template-columns:1fr;}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  }
  @media (max-width:767px){
    :root{--sec-y:52px;}
    body{font-size:15.5px;}
    .topbar-search{display:none;}
    .ghost-link{display:none;}
    .menu-toggle{display:inline-flex;}
    .topbar-inner{gap:12px;}

    .channel-bar{display:none;}
    .site-header.nav-open .channel-bar{
      display:block;
      border-top:1px solid var(--divider);
      padding-bottom:8px;
    }
    .site-header.nav-open .channel-inner{
      flex-direction:column;
      align-items:stretch;
      gap:4px;
    }
    .site-header.nav-open .channel-nav{
      flex-direction:column;
      align-items:stretch;
      overflow:visible;
    }
    .site-header.nav-open .nav-link{
      border-bottom:none;
      border-left:3px solid transparent;
      border-radius:0 8px 8px 0;
      padding:14px 12px;
    }
    .site-header.nav-open .nav-link.is-active{
      border-left-color:var(--brand);
      background:var(--brand-light);
    }

    .page-banner{min-height:0;padding:36px 0 32px;}
    .banner-inner{padding-top:0;padding-bottom:0;}

    .spec-strip{grid-template-columns:1fr;}
    .spec-item{border-right:none;border-bottom:1px solid var(--divider);}
    .spec-item:last-child{border-bottom:none;}

    .swatch-grid{grid-template-columns:repeat(2,1fr);gap:14px;}

    .timeline{grid-template-columns:1fr;gap:0;margin-top:28px;}
    .timeline::before{
      display:block;
      left:6px;right:auto;top:10px;bottom:18px;
      width:1px;height:auto;
    }
    .tl-item{padding:0 0 24px 30px;}
    .tl-item::before{top:6px;}

    .split{grid-template-columns:1fr;gap:20px;}
    .split.reverse .split-media{order:0;}
    .split + .split{margin-top:44px;}

    .cta-band{padding:26px 20px;flex-direction:column;align-items:flex-start;}
    .cta-actions{width:100%;}
    .cta-actions .btn{flex:1 1 100%;}

    .channel-return{padding:20px;gap:22px;}

    .footer-grid{grid-template-columns:1fr;gap:30px;}
    .footer-bottom{flex-direction:column;align-items:flex-start;}
  }
  @media (max-width:519px){
    .container{padding:0 16px;}
    .logo-main{font-size:16px;}
    .logo-sub{font-size:11px;letter-spacing:.10em;}
    .swatch-grid{grid-template-columns:1fr;}
    .btn{padding:11px 18px;font-size:14.5px;}
  }

/* roulang page: category3 */
:root{
    --brand:#2B6C8F;
    --brand-deep:#1D4E68;
    --brand-soft:#E8F0F5;
    --brand-10:rgba(43,108,143,.10);
    --accent:#C08A3E;
    --accent-soft:#F6EEDF;
    --accent-deep:#7D5518;
    --bg:#F6F7F8;
    --surface:#FFFFFF;
    --surface-2:#F0F3F5;
    --text:#16232E;
    --text-2:#5A6B78;
    --text-3:#8A97A1;
    --border:#E3E7EB;
    --line:#EDF0F2;
    --ok:#2F7D5B;
    --warn:#B4553F;
    --r-card:14px;
    --r-btn:10px;
    --r-img:12px;
    --sh-sm:0 1px 2px rgba(22,35,46,.05);
    --sh-md:0 6px 18px rgba(22,35,46,.07);
    --sh-lg:0 14px 34px rgba(22,35,46,.10);
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  html body{
    margin:0;
    background:var(--bg);
    color:var(--text);
    font-family:'PingFang SC','Microsoft YaHei','Hiragino Sans GB','Source Han Sans SC',system-ui,-apple-system,'Segoe UI',sans-serif;
    font-size:16px;
    line-height:1.8;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;border:0;}
  figure{margin:0;}
  ul,ol{margin:0;padding:0;list-style:none;}
  a{color:inherit;text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease;}
  button,input,select{font-family:inherit;}
  :focus-visible{outline:2px solid rgba(43,108,143,.5);outline-offset:2px;border-radius:6px;}

  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

  /* ---------- Header ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:rgba(255,255,255,.96);
    backdrop-filter:saturate(160%) blur(6px);
    border-bottom:1px solid var(--line);
    transition:box-shadow .2s ease;
  }
  .site-header.is-scrolled{box-shadow:var(--sh-sm);}
  .brand-row{
    display:flex;align-items:center;justify-content:space-between;gap:20px;
    padding:14px 0;transition:padding .2s ease;
  }
  .site-header.is-scrolled .brand-row{padding:8px 0;}
  .logo{display:inline-flex;align-items:center;gap:10px;}
  .logo-mark{
    width:38px;height:38px;flex:0 0 38px;border-radius:10px;
    background:var(--brand);color:#fff;
    display:inline-flex;align-items:center;justify-content:center;
    font-weight:700;font-size:15px;letter-spacing:.02em;
    box-shadow:var(--sh-sm);
  }
  .logo-text{display:flex;flex-direction:column;line-height:1.25;}
  .logo-main{font-size:17px;font-weight:700;color:var(--text);letter-spacing:-.01em;}
  .logo-sub{font-size:11px;color:var(--text-3);letter-spacing:.12em;}
  .brand-tools{display:flex;align-items:center;gap:10px;}
  .search-box{
    display:flex;align-items:center;gap:8px;
    background:var(--surface-2);border:1px solid transparent;
    border-radius:8px;padding:0 12px;height:40px;width:260px;
    transition:background-color .2s ease,border-color .2s ease,box-shadow .2s ease;
  }
  .search-box:focus-within{background:#fff;border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-10);}
  .search-box i{color:var(--text-3);font-size:13px;}
  .search-box input{
    border:0;background:transparent;outline:none;width:100%;
    font-size:14px;color:var(--text);height:100%;
  }
  .search-box input::placeholder{color:var(--text-3);}
  .icon-btn{
    width:40px;height:40px;border-radius:10px;border:1px solid var(--border);
    background:#fff;color:var(--text-2);
    display:inline-flex;align-items:center;justify-content:center;
    transition:all .2s ease;cursor:pointer;
  }
  .icon-btn:hover{color:var(--brand);border-color:var(--brand);background:var(--brand-10);}
  .menu-toggle{
    display:none;width:40px;height:40px;border-radius:10px;
    border:1px solid var(--border);background:#fff;color:var(--text-2);
    align-items:center;justify-content:center;cursor:pointer;
  }
  .nav-bar{border-top:1px solid var(--line);background:rgba(255,255,255,.86);}
  .channel-nav{display:flex;align-items:center;gap:6px;overflow-x:auto;scrollbar-width:none;}
  .channel-nav::-webkit-scrollbar{display:none;}
  .nav-link{
    display:inline-block;white-space:nowrap;
    padding:12px 14px;font-size:15px;color:var(--text-2);
    border-bottom:2px solid transparent;transition:all .2s ease;
  }
  .nav-link:hover{color:var(--brand);background:var(--brand-10);}
  .nav-link.is-active{color:var(--brand-deep);font-weight:600;border-bottom-color:var(--brand);background:transparent;}

  /* ---------- Buttons & badges ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    min-height:44px;padding:12px 22px;border-radius:var(--r-btn);
    font-size:15px;font-weight:600;border:1px solid transparent;
    cursor:pointer;transition:transform .18s ease,background-color .18s ease,box-shadow .18s ease,border-color .18s ease,color .18s ease;
  }
  .btn-primary{background:var(--brand);color:#fff;box-shadow:var(--sh-sm);}
  .btn-primary:hover{background:var(--brand-deep);transform:translateY(-2px);box-shadow:var(--sh-md);}
  .btn-primary:active{transform:translateY(0);background:var(--brand-deep);}
  .btn-outline{background:#fff;color:var(--brand);border-color:var(--brand);}
  .btn-outline:hover{background:var(--brand-10);transform:translateY(-2px);}
  .btn-outline:active{transform:translateY(0);}
  .btn-accent{background:var(--accent);color:#fff;}
  .btn-accent:hover{background:#A9752F;transform:translateY(-1px);}
  .btn-sm{min-height:38px;padding:8px 16px;font-size:14px;}
  .btn-block{width:100%;}
  .btn[disabled],.btn.is-disabled{opacity:.45;box-shadow:none;transform:none;cursor:not-allowed;}

  .badge{
    display:inline-flex;align-items:center;gap:6px;
    padding:4px 12px;border-radius:999px;
    font-size:12px;font-weight:600;letter-spacing:.02em;
    background:var(--brand-soft);color:var(--brand-deep);
  }
  .badge-accent{background:var(--accent-soft);color:var(--accent-deep);}
  .chip{
    display:inline-flex;align-items:center;gap:6px;
    padding:6px 14px;border-radius:999px;font-size:13px;
    background:#fff;border:1px solid var(--border);color:var(--text-2);
    transition:all .2s ease;
  }
  .chip:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-10);}
  .chip.is-on{background:var(--brand);border-color:var(--brand);color:#fff;}

  /* ---------- Breadcrumb ---------- */
  .breadcrumb{font-size:14px;color:var(--text-3);margin-bottom:12px;display:flex;flex-wrap:wrap;gap:8px;align-items:center;}
  .breadcrumb a:hover{color:var(--brand);}
  .breadcrumb .sep{color:#C6CFD6;}
  .breadcrumb .current{color:var(--text-2);}

  /* ---------- Section base ---------- */
  .section{padding:clamp(48px,7vw,88px) 0;}
  .section-tight{padding:clamp(32px,4.5vw,56px) 0;}
  .section-alt{background:var(--surface-2);}
  .section-white{background:#fff;}
  .section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;}
  .eyebrow{font-size:13px;letter-spacing:.14em;color:var(--brand);font-weight:600;margin-bottom:10px;}
  .h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;letter-spacing:-.01em;line-height:1.35;margin:0 0 10px;}
  .h3{font-size:18px;font-weight:600;line-height:1.5;margin:0 0 8px;}
  .section-sub{color:var(--text-2);font-size:15px;max-width:60ch;margin:0;}
  .more-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand);white-space:nowrap;}
  .more-link:hover{color:var(--brand-deep);gap:10px;}

  /* ---------- Hero ---------- */
  .hero{padding:clamp(28px,4vw,44px) 0 clamp(36px,5vw,56px);}
  .hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:clamp(28px,4vw,56px);align-items:center;}
  .hero-title{font-size:clamp(28px,4vw,44px);font-weight:700;line-height:1.25;letter-spacing:-.01em;margin:0 0 18px;}
  .hero-title .accent-line{display:block;position:relative;padding-left:16px;}
  .hero-title .accent-line::before{
    content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;border-radius:2px;
    background:var(--accent);
  }
  .hero-lead{font-size:17px;color:var(--text-2);max-width:56ch;margin:0 0 26px;}
  .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:30px;}
  .hero-metrics{display:flex;flex-wrap:wrap;gap:0;border-top:1px solid var(--border);padding-top:20px;}
  .hero-metric{padding:0 26px;border-left:1px solid var(--line);}
  .hero-metric:first-child{padding-left:0;border-left:0;}
  .hero-metric strong{display:block;font-size:17px;font-weight:700;color:var(--brand-deep);}
  .hero-metric span{font-size:13px;color:var(--text-3);}
  .hero-visual{position:relative;}
  .hero-visual img{
    width:100%;aspect-ratio:4/3;object-fit:cover;
    border-radius:var(--r-img);box-shadow:var(--sh-md);
  }
  .hero-visual .float-badge{
    position:absolute;left:18px;bottom:18px;
    background:rgba(255,255,255,.94);border:1px solid var(--border);
    border-radius:999px;padding:8px 16px;font-size:13px;font-weight:600;color:var(--brand-deep);
    box-shadow:var(--sh-sm);
  }

  /* ---------- Steps rail ---------- */
  .steps-rail{
    display:grid;grid-template-columns:repeat(4,1fr);
    background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
    box-shadow:var(--sh-sm);overflow:hidden;
  }
  .step-item{padding:22px;border-left:1px solid var(--line);}
  .step-item:first-child{border-left:0;}
  .step-top{display:flex;align-items:center;gap:10px;margin-bottom:10px;}
  .step-num{
    width:28px;height:28px;flex:0 0 28px;border-radius:999px;
    background:var(--brand-soft);color:var(--brand-deep);
    font-size:13px;font-weight:700;display:inline-flex;align-items:center;justify-content:center;
  }
  .step-item h3{font-size:16px;font-weight:600;margin:0;}
  .step-item p{font-size:14px;color:var(--text-2);margin:0;line-height:1.75;}

  /* ---------- Flow ---------- */
  .flow{position:relative;padding-left:38px;}
  .flow::before{content:"";position:absolute;left:11px;top:8px;bottom:8px;width:1px;background:var(--border);}
  .flow-item{position:relative;display:grid;grid-template-columns:1fr 1fr;gap:clamp(24px,3.5vw,44px);align-items:center;padding-bottom:clamp(36px,5vw,64px);}
  .flow-item:last-child{padding-bottom:0;}
  .flow-dot{
    position:absolute;left:-38px;top:6px;width:22px;height:22px;border-radius:999px;
    background:#fff;border:2px solid var(--brand);
    display:flex;align-items:center;justify-content:center;
  }
  .flow-dot::after{content:"";width:8px;height:8px;border-radius:999px;background:var(--brand);}
  .flow-item:nth-child(even) .flow-media{order:-1;}
  .flow-media img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r-img);box-shadow:var(--sh-md);}
  .flow-index{font-size:13px;font-weight:700;color:var(--accent);letter-spacing:.1em;margin-bottom:8px;}
  .flow-text p{color:var(--text-2);font-size:15px;margin:0 0 14px;}
  .check-list li{position:relative;padding-left:22px;font-size:14px;color:var(--text-2);margin-bottom:8px;}
  .check-list li::before{
    content:"";position:absolute;left:0;top:.62em;width:8px;height:8px;border-radius:2px;
    background:var(--brand-soft);border:1px solid var(--brand);
  }

  /* ---------- Compare table ---------- */
  .table-wrap{
    overflow-x:auto;background:#fff;border:1px solid var(--border);
    border-radius:var(--r-card);box-shadow:var(--sh-sm);
  }
  table.compare{width:100%;min-width:760px;border-collapse:collapse;}
  table.compare th{
    background:var(--surface-2);text-align:left;padding:14px 20px;
    font-size:13px;font-weight:600;color:var(--text-2);letter-spacing:.03em;white-space:nowrap;
  }
  table.compare td{padding:16px 20px;font-size:14px;color:var(--text-2);border-top:1px solid var(--line);}
  table.compare td strong{color:var(--text);font-weight:600;}
  table.compare tbody tr:nth-child(even){background:#FAFBFC;}
  table.compare tbody tr:hover{background:var(--brand-soft);}

  /* ---------- Cards ---------- */
  .card{
    background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
    box-shadow:var(--sh-md);overflow:hidden;height:100%;
    transition:transform .2s ease,box-shadow .2s ease;
  }
  .card:hover{transform:translateY(-2px);box-shadow:var(--sh-lg);}
  .card-img img{width:100%;aspect-ratio:16/10;object-fit:cover;}
  .card-body{padding:20px;}
  .card-body p{font-size:14px;color:var(--text-2);margin:0;}

  .scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
  .scene-meta{display:flex;align-items:center;gap:10px;margin-bottom:10px;font-size:12px;color:var(--text-3);}
  .scene-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;}

  /* ---------- Reviews ---------- */
  .review-head{display:flex;align-items:center;gap:12px;}
  .track-arrows{display:flex;gap:8px;}
  .round-btn{
    width:40px;height:40px;border-radius:999px;border:1px solid var(--border);
    background:#fff;color:var(--text-2);display:inline-flex;align-items:center;justify-content:center;
    cursor:pointer;transition:all .2s ease;
  }
  .round-btn:hover{color:var(--brand);border-color:var(--brand);background:var(--brand-10);}
  .review-track{display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;padding:4px 4px 14px;scrollbar-width:thin;}
  .review-track::-webkit-scrollbar{height:6px;}
  .review-track::-webkit-scrollbar-thumb{background:#D7DEE3;border-radius:999px;}
  .review-card{
    flex:0 0 calc((100% - 40px) / 3);scroll-snap-align:start;
    background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
    box-shadow:var(--sh-md);padding:22px;
  }
  .stars{color:var(--accent);font-size:13px;letter-spacing:2px;margin-bottom:12px;}
  .review-card blockquote{margin:0 0 18px;font-size:15px;color:var(--text);line-height:1.85;}
  .review-person{display:flex;align-items:center;gap:12px;}
  .avatar{
    width:40px;height:40px;flex:0 0 40px;border-radius:999px;
    background:var(--brand-soft);color:var(--brand-deep);
    display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px;
  }
  .review-person strong{display:block;font-size:14px;}
  .review-person span{font-size:12px;color:var(--text-3);}
  .review-related{font-size:12px;color:var(--text-3);margin-top:14px;padding-top:12px;border-top:1px dashed var(--line);}

  /* ---------- FAQ ---------- */
  .faq-list{max-width:920px;margin:0 auto;}
  .faq-item{
    background:#fff;border:1px solid var(--border);border-radius:12px;
    margin-bottom:12px;overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;
  }
  .faq-item:hover{border-color:#CDD8DF;}
  .faq-item summary{
    list-style:none;cursor:pointer;position:relative;
    padding:18px 56px 18px 22px;font-size:16px;font-weight:600;color:var(--text);
    transition:color .2s ease;
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary::after{
    content:"+";position:absolute;right:22px;top:50%;transform:translateY(-50%);
    font-size:20px;font-weight:400;color:var(--brand);line-height:1;
    transition:transform .22s ease,color .2s ease;
  }
  .faq-item[open] summary{color:var(--brand-deep);}
  .faq-item[open] summary::after{content:"−";transform:translateY(-50%) rotate(180deg);}
  .faq-body{padding:0 22px 20px;border-left:3px solid transparent;transition:border-color .2s ease;}
  .faq-item[open] .faq-body{border-left-color:var(--brand);}
  .faq-body p{margin:0;font-size:15px;color:var(--text-2);line-height:1.9;}

  /* ---------- CTA band ---------- */
  .cta-band{
    background:linear-gradient(135deg,rgba(43,108,143,.10),rgba(43,108,143,.02) 65%,rgba(192,138,62,.10));
    border:1px solid var(--border);border-radius:18px;
    padding:clamp(26px,3.5vw,40px);
    display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  }
  .cta-band h2{font-size:clamp(20px,2.4vw,26px);font-weight:700;margin:0 0 8px;}
  .cta-band p{margin:0;color:var(--text-2);font-size:15px;}
  .cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

  /* ---------- Related ---------- */
  .related-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
  .related-card{
    display:grid;grid-template-columns:170px 1fr;
    background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
    box-shadow:var(--sh-sm);overflow:hidden;
    transition:transform .2s ease,box-shadow .2s ease;
  }
  .related-card:hover{transform:translateY(-2px);box-shadow:var(--sh-md);}
  .related-card img{width:100%;height:100%;min-height:140px;object-fit:cover;}
  .related-body{padding:18px 20px;display:flex;flex-direction:column;gap:8px;}
  .related-body h3{font-size:16px;font-weight:600;margin:0;line-height:1.55;}
  .related-body p{margin:0;font-size:13px;color:var(--text-2);line-height:1.75;}
  .related-foot{margin-top:auto;font-size:12px;color:var(--text-3);display:flex;gap:14px;}

  /* ---------- Footer ---------- */
  .site-footer{background:#14212C;color:#C3D0D8;padding:clamp(44px,6vw,68px) 0 0;margin-top:clamp(40px,6vw,80px);}
  .footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.4fr;gap:40px;}
  .site-footer .logo-main{color:#fff;}
  .site-footer .logo-sub{color:rgba(255,255,255,.55);}
  .footer-desc{font-size:14px;color:#9FB0BB;line-height:1.85;margin:16px 0 0;max-width:40ch;}
  .footer-title{font-size:15px;font-weight:600;color:#fff;margin:0 0 16px;}
  .footer-links a{display:block;padding:6px 0;font-size:14px;color:#B4C3CC;}
  .footer-links a:hover{color:#fff;}
  .footer-contact{display:flex;flex-direction:column;gap:8px;font-size:14px;color:#B4C3CC;margin-bottom:16px;}
  .footer-contact strong{color:#fff;font-weight:600;}
  .footer-sub{display:flex;gap:8px;}
  .footer-sub input{
    flex:1;min-width:0;height:42px;padding:0 12px;border-radius:8px;
    background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);
    color:#fff;font-size:14px;outline:none;transition:border-color .2s ease,background-color .2s ease;
  }
  .footer-sub input::placeholder{color:#8CA0AD;}
  .footer-sub input:focus{border-color:#7FB0CC;background:rgba(255,255,255,.12);}
  .footer-bottom{
    margin-top:44px;padding:20px 0;border-top:1px solid rgba(255,255,255,.10);
    display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
    font-size:13px;color:#8CA0AD;
  }

  /* ---------- Responsive ---------- */
  @media (max-width:1023px){
    .brand-row{padding:12px 0;}
    .search-box{display:none;}
    .menu-toggle{display:inline-flex;}
    .nav-bar{display:none;}
    .nav-bar.is-open{display:block;}
    .nav-bar .container{padding-top:8px;padding-bottom:12px;}
    .channel-nav{flex-direction:column;align-items:stretch;gap:4px;overflow:visible;}
    .nav-link{border-bottom:0;border-radius:10px;padding:12px 14px;}
    .nav-link.is-active{background:var(--brand-soft);border-bottom-color:transparent;}
    .hero-grid{grid-template-columns:1fr;}
    .hero-visual{order:-1;}
    .hero-metric{padding:0 18px;}
    .steps-rail{grid-template-columns:repeat(2,1fr);}
    .step-item:nth-child(3){border-left:0;}
    .step-item:nth-child(n+3){border-top:1px solid var(--line);}
    .flow-item{grid-template-columns:1fr;gap:20px;}
    .flow-item:nth-child(even) .flow-media{order:0;}
    .scene-grid{grid-template-columns:repeat(2,1fr);}
    .review-card{flex:0 0 calc((100% - 20px) / 2);}
    .track-arrows{display:none;}
    .related-grid{grid-template-columns:1fr;}
    .footer-grid{grid-template-columns:repeat(2,1fr);gap:32px;}
    .search-box{width:220px;}
  }
  @media (max-width:768px){
    .container{padding:0 20px;}
    .section-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:26px;}
    .hero-metrics{gap:14px 0;}
    .hero-metric{flex:1 1 46%;padding:0 14px;}
    .flow{padding-left:28px;}
    .flow::before{left:9px;}
    .flow-dot{left:-28px;width:20px;height:20px;}
    .related-card{grid-template-columns:140px 1fr;}
  }
  @media (max-width:520px){
    .container{padding:0 16px;}
    .site-header.is-scrolled .brand-row{padding:8px 0;}
    .brand-tools{gap:8px;}
    .btn{width:100%;}
    .hero-actions .btn,.cta-actions .btn{width:100%;}
    .hero-metric{flex:1 1 100%;padding:0;border-left:0;}
    .steps-rail{grid-template-columns:1fr;}
    .step-item{border-left:0;border-top:1px solid var(--line);}
    .step-item:first-child{border-top:0;}
    .scene-grid{grid-template-columns:1fr;}
    .review-card{flex:0 0 88%;}
    .related-card{grid-template-columns:1fr;}
    .related-card img{min-height:170px;aspect-ratio:16/9;}
    .footer-grid{grid-template-columns:1fr;gap:28px;}
    .footer-bottom{flex-direction:column;gap:6px;}
    .btn-sm{width:auto;}
  }

/* roulang page: category4 */
:root{
    --brand:#2B6C8F;
    --brand-deep:#1D4E68;
    --brand-soft:#E8F0F5;
    --accent:#C08A3E;
    --accent-soft:#F6EEDF;
    --bg:#F6F7F8;
    --surface:#FFFFFF;
    --surface-2:#F0F3F5;
    --text:#16232E;
    --text-2:#5A6B78;
    --text-3:#8A97A1;
    --border:#E3E7EB;
    --divider:#EDF0F2;
    --success:#2F7D5B;
    --warn:#B4553F;
    --radius-card:14px;
    --radius-btn:9px;
    --shadow-sm:0 1px 2px rgba(22,35,46,.05);
    --shadow-md:0 6px 18px rgba(22,35,46,.07);
    --shadow-lg:0 14px 34px rgba(22,35,46,.10);
    --header-h:84px;
  }
  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%}
  body{
    margin:0;
    background:var(--bg);
    color:var(--text);
    font-family:'PingFang SC','Microsoft YaHei','Hiragino Sans GB','Source Han Sans SC',system-ui,-apple-system,'Segoe UI',sans-serif;
    font-size:16px;
    line-height:1.8;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block}
  a{color:inherit;text-decoration:none;transition:color .18s ease,background-color .18s ease,border-color .18s ease}
  button,input,select{font:inherit;color:inherit}
  ul,ol{margin:0;padding:0;list-style:none}
  h1,h2,h3,h4{margin:0;font-weight:600;letter-spacing:-.01em;line-height:1.35}
  p{margin:0}
  :focus-visible{outline:2px solid rgba(43,108,143,.45);outline-offset:2px;border-radius:4px}

  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
  @media (min-width:1280px){.container{max-width:1240px}}

  /* ---------- header ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:rgba(255,255,255,.96);
    backdrop-filter:saturate(180%) blur(10px);
    border-bottom:1px solid var(--border);
    transition:box-shadow .2s ease,border-color .2s ease;
  }
  .site-header.is-scrolled{box-shadow:var(--shadow-sm)}
  .brand-row{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 0;transition:padding .2s ease}
  .site-header.is-scrolled .brand-row{padding:8px 0}
  .logo{display:inline-flex;align-items:center;gap:10px}
  .logo-mark{
    width:38px;height:38px;border-radius:11px;flex:none;
    background:linear-gradient(140deg,var(--brand) 0%,var(--brand-deep) 100%);
    color:#fff;font-weight:700;font-size:15px;letter-spacing:.03em;
    display:flex;align-items:center;justify-content:center;
    box-shadow:0 3px 10px rgba(29,78,104,.28);
  }
  .logo-text{display:flex;flex-direction:column;line-height:1.15}
  .logo-main{font-size:17px;font-weight:700;color:var(--text)}
  .logo-sub{font-size:11.5px;color:var(--text-3);letter-spacing:.14em}
  .brand-tools{display:flex;align-items:center;gap:10px}
  .icon-btn{
    width:40px;height:40px;border-radius:10px;border:1px solid transparent;background:transparent;
    display:inline-flex;align-items:center;justify-content:center;color:var(--text-2);cursor:pointer;
  }
  .icon-btn:hover{background:var(--brand-soft);color:var(--brand-deep)}
  .brand-phone{font-size:14px;color:var(--text-2);display:inline-flex;align-items:center;gap:6px}
  .brand-phone strong{color:var(--text);font-weight:600}
  .burger{display:none}

  .channel-row{border-top:1px solid var(--divider);display:flex;align-items:center;gap:18px;padding:6px 0}
  .channel-nav{display:flex;align-items:center;gap:4px;flex-wrap:wrap;min-width:0}
  .nav-link{
    position:relative;display:inline-block;padding:9px 14px;border-radius:8px;
    font-size:14.5px;color:var(--text-2);white-space:nowrap;
  }
  .nav-link:hover{background:var(--brand-soft);color:var(--brand-deep)}
  .nav-link.is-active{color:var(--brand);font-weight:600}
  .nav-link.is-active::after{
    content:"";position:absolute;left:14px;right:14px;bottom:1px;height:2px;border-radius:2px;background:var(--brand);
  }
  .hot-chips{display:flex;align-items:center;gap:8px;margin-left:auto;flex:none}
  .hot-chip{
    font-size:12.5px;color:var(--brand-deep);background:var(--brand-soft);
    border-radius:999px;padding:4px 11px;white-space:nowrap;
  }
  .hot-chip:hover{background:#D9E7EF}
  .nav-search{
    display:flex;align-items:center;gap:8px;background:var(--surface-2);border:1px solid var(--border);
    border-radius:9px;padding:6px 12px;min-width:210px;transition:background .18s,border-color .18s,box-shadow .18s;
  }
  .nav-search:focus-within{background:#fff;border-color:var(--brand);box-shadow:0 0 0 3px rgba(43,108,143,.14)}
  .nav-search input{border:0;background:transparent;outline:none;width:100%;font-size:14px}
  .nav-search input::placeholder{color:var(--text-3)}

  .mobile-drawer{display:none;border-top:1px solid var(--divider);background:#fff}
  .mobile-drawer.is-open{display:block}
  .mobile-drawer a{display:block;padding:13px 4px;font-size:15px;color:var(--text-2);border-bottom:1px solid var(--divider)}
  .mobile-drawer a.is-active{color:var(--brand);font-weight:600}

  /* ---------- buttons ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    padding:11px 20px;border-radius:var(--radius-btn);font-size:15px;font-weight:600;
    border:1px solid transparent;cursor:pointer;transition:all .18s ease;line-height:1;
  }
  .btn-primary{background:var(--brand);color:#fff;box-shadow:0 4px 12px rgba(43,108,143,.22)}
  .btn-primary:hover{background:var(--brand-deep);transform:translateY(-1px);box-shadow:0 8px 20px rgba(29,78,104,.26)}
  .btn-primary:active{transform:translateY(0);box-shadow:0 2px 6px rgba(29,78,104,.22)}
  .btn-ghost{background:transparent;color:var(--text-2);border-color:var(--border)}
  .btn-ghost:hover{border-color:var(--brand);color:var(--brand-deep);background:rgba(43,108,143,.06)}
  .btn-outline{background:#fff;color:var(--brand);border-color:var(--brand)}
  .btn-outline:hover{background:rgba(43,108,143,.10)}
  .btn-accent{background:var(--accent);color:#fff}
  .btn-accent:hover{background:#A9762F;transform:translateY(-1px)}
  .btn-sm{padding:8px 15px;font-size:13.5px;border-radius:8px}
  .btn-block{width:100%}
  .btn[disabled],.btn.is-disabled{opacity:.45;box-shadow:none;cursor:not-allowed;transform:none}

  /* ---------- badges / chips ---------- */
  .badge{display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:600;border-radius:999px;padding:3px 11px;line-height:1.7}
  .badge-brand{background:var(--brand-soft);color:var(--brand-deep)}
  .badge-accent{background:var(--accent-soft);color:#8A5F1C}
  .badge-line{border:1px solid var(--border);color:var(--text-2);background:#fff}

  /* ---------- breadcrumb ---------- */
  .crumbs{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text-3);padding-top:26px;flex-wrap:wrap}
  .crumbs a:hover{color:var(--brand)}
  .crumbs .sep{color:#C7CFD6}
  .crumbs .current{color:var(--text-2)}

  /* ---------- hero ---------- */
  .page-hero{
    position:relative;overflow:hidden;border-radius:var(--radius-card);
    min-height:238px;display:flex;align-items:flex-end;
    margin-top:18px;box-shadow:var(--shadow-md);
    background-image:linear-gradient(100deg,rgba(18,44,60,.86) 0%,rgba(18,44,60,.58) 48%,rgba(18,44,60,.24) 100%),url('/assets/images/backpic/back-1.webp');
    background-size:cover;background-position:center;
  }
  .hero-inner{padding:34px 38px;max-width:760px;color:#fff}
  .hero-kicker{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;letter-spacing:.08em;background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.28);border-radius:999px;padding:4px 12px}
  .page-hero h1{font-size:clamp(28px,4vw,42px);font-weight:700;margin:14px 0 10px;color:#fff}
  .page-hero p{font-size:15.5px;color:rgba(255,255,255,.9);max-width:640px}
  .hero-meta{display:flex;gap:22px;flex-wrap:wrap;margin-top:18px;font-size:13.5px;color:rgba(255,255,255,.86)}
  .hero-meta span{display:inline-flex;align-items:center;gap:7px}
  .dot{width:6px;height:6px;border-radius:50%;background:var(--accent);display:inline-block}

  /* ---------- update ticker ---------- */
  .update-bar{
    display:flex;align-items:center;gap:14px;margin-top:22px;background:#fff;border:1px solid var(--border);
    border-radius:12px;padding:12px 16px;box-shadow:var(--shadow-sm);
  }
  .update-tag{flex:none;background:var(--accent-soft);color:#8A5F1C;font-size:12.5px;font-weight:600;border-radius:6px;padding:3px 9px}
  .update-bar .txt{font-size:14.5px;color:var(--text-2);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .update-bar a.more{margin-left:auto;flex:none;font-size:14px;color:var(--brand);font-weight:600}
  .update-bar a.more:hover{color:var(--brand-deep)}

  /* ---------- filter chips ---------- */
  .filter-bar{display:flex;align-items:center;gap:10px;margin-top:26px;overflow-x:auto;padding-bottom:4px;scrollbar-width:thin}
  .chip{
    flex:none;font-size:14px;color:var(--text-2);background:#fff;border:1px solid var(--border);
    border-radius:999px;padding:7px 16px;transition:all .18s ease;white-space:nowrap;
  }
  .chip:hover{border-color:var(--brand);color:var(--brand-deep);background:rgba(43,108,143,.06)}
  .chip.is-on{background:var(--brand);border-color:var(--brand);color:#fff;font-weight:600}
  .chip.is-on:hover{background:var(--brand-deep);color:#fff}
  .filter-count{margin-left:auto;flex:none;font-size:13.5px;color:var(--text-3)}

  /* ---------- main layout ---------- */
  .feed-layout{display:grid;grid-template-columns:minmax(0,1fr) 306px;gap:32px;margin-top:24px;align-items:start}
  .section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:18px}
  .section-head h2{font-size:23px}
  .section-head .link-more{font-size:14px;color:var(--brand);font-weight:600;display:inline-flex;align-items:center;gap:5px}
  .section-head .link-more:hover{color:var(--brand-deep)}

  .news-feature{
    display:grid;grid-template-columns:1.05fr 1fr;gap:0;background:#fff;border:1px solid var(--border);
    border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-md);transition:box-shadow .2s ease,transform .2s ease;
  }
  .news-feature:hover{box-shadow:var(--shadow-lg);transform:translateY(-2px)}
  .news-feature .thumb{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--surface-2)}
  .news-feature .thumb img{width:100%;height:100%;object-fit:cover}
  .news-feature .body{padding:26px 28px;display:flex;flex-direction:column;gap:14px}
  .news-feature h3{font-size:22px;line-height:1.45}
  .news-feature h3 a:hover{color:var(--brand)}
  .news-feature p{font-size:14.8px;color:var(--text-2);line-height:1.85}
  .meta-row{display:flex;align-items:center;gap:14px;font-size:13.5px;color:var(--text-3);flex-wrap:wrap}
  .meta-row .sep{color:#D3DAE0}

  .news-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px;margin-top:22px}
  .news-card{
    display:grid;grid-template-columns:126px minmax(0,1fr);gap:14px;background:#fff;
    border:1px solid var(--border);border-radius:var(--radius-card);padding:14px;
    box-shadow:var(--shadow-sm);transition:box-shadow .2s ease,transform .2s ease,border-color .2s ease;
  }
  .news-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px);border-color:#D6DFE5}
  .news-card .thumb{aspect-ratio:4/3;border-radius:10px;overflow:hidden;background:var(--surface-2)}
  .news-card .thumb img{width:100%;height:100%;object-fit:cover}
  .news-card h4{font-size:16px;line-height:1.5;margin-bottom:8px}
  .news-card h4 a{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
  .news-card h4 a:hover{color:var(--brand)}
  .news-card .excerpt{font-size:13.6px;color:var(--text-2);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
  .news-card .foot{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:10px;font-size:12.8px;color:var(--text-3)}

  /* ---------- sidebar ---------- */
  .sidebar{display:flex;flex-direction:column;gap:22px;position:sticky;top:104px}
  .side-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);padding:20px;box-shadow:var(--shadow-sm)}
  .side-card h3{font-size:16.5px;display:flex;align-items:center;gap:8px;margin-bottom:14px}
  .side-card h3::before{content:"";width:4px;height:16px;border-radius:2px;background:var(--brand)}
  .rank-list li{display:flex;gap:12px;padding:11px 0;border-bottom:1px dashed var(--divider)}
  .rank-list li:last-child{border-bottom:0;padding-bottom:0}
  .rank-no{
    flex:none;width:22px;height:22px;border-radius:6px;background:var(--surface-2);color:var(--text-2);
    font-size:12.5px;font-weight:700;display:flex;align-items:center;justify-content:center;margin-top:3px;
  }
  .rank-list li:nth-child(-n+3) .rank-no{background:var(--accent-soft);color:#8A5F1C}
  .rank-list a{font-size:14.4px;color:var(--text);line-height:1.6;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
  .rank-list a:hover{color:var(--brand)}
  .rank-list .r-meta{display:block;font-size:12.4px;color:var(--text-3);margin-top:3px}
  .tag-cloud{display:flex;flex-wrap:wrap;gap:8px}
  .tag-cloud a{font-size:13px;color:var(--text-2);background:var(--surface-2);border-radius:999px;padding:5px 12px}
  .tag-cloud a:hover{background:var(--brand-soft);color:var(--brand-deep)}
  .sub-card{background:linear-gradient(160deg,#F4F8FA 0%,#FFFFFF 70%);border:1px solid var(--border)}
  .sub-card p{font-size:13.8px;color:var(--text-2);margin-bottom:14px}
  .sub-card form{display:flex;flex-direction:column;gap:10px}
  .field{
    width:100%;border:1px solid var(--border);border-radius:8px;padding:10px 12px;font-size:14px;
    background:#fff;transition:border-color .18s,box-shadow .18s;outline:none;
  }
  .field:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(43,108,143,.14)}
  .side-note{font-size:12.4px;color:var(--text-3);line-height:1.7}

  /* ---------- pagination ---------- */
  .pagination{display:flex;align-items:center;justify-content:center;gap:8px;margin:36px 0 8px;flex-wrap:wrap}
  .page-item{
    min-width:40px;height:40px;padding:0 13px;border-radius:999px;border:1px solid var(--border);background:#fff;
    display:inline-flex;align-items:center;justify-content:center;font-size:14px;color:var(--text-2);
  }
  .page-item:hover{border-color:var(--brand);color:var(--brand-deep);background:rgba(43,108,143,.06)}
  .page-item.is-current{background:var(--brand);border-color:var(--brand);color:#fff;font-weight:600}
  .page-item.is-disabled{opacity:.45;pointer-events:none}

  /* ---------- editorial notes ---------- */
  .notes-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
  .note-item{padding-top:18px;border-top:2px solid var(--brand)}
  .note-item h3{font-size:16.5px;margin-bottom:8px}
  .note-item p{font-size:14.2px;color:var(--text-2);line-height:1.85}

  /* ---------- channel cards ---------- */
  .chan-scroll{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px}
  .chan-card{
    background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);overflow:hidden;
    box-shadow:var(--shadow-sm);transition:box-shadow .2s,transform .2s;display:flex;flex-direction:column;
  }
  .chan-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-2px)}
  .chan-card .thumb{aspect-ratio:3/2;overflow:hidden;background:var(--surface-2)}
  .chan-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
  .chan-card:hover .thumb img{transform:scale(1.04)}
  .chan-card .body{padding:16px 18px 18px;display:flex;flex-direction:column;gap:8px;flex:1}
  .chan-card h3{font-size:16.5px}
  .chan-card p{font-size:13.6px;color:var(--text-2);line-height:1.75;flex:1}
  .chan-card .go{font-size:13.6px;color:var(--brand);font-weight:600}

  /* ---------- cta band ---------- */
  .cta-band{
    background:linear-gradient(125deg,#EAF2F7 0%,#F7F9FA 62%);
    border:1px solid var(--border);border-radius:var(--radius-card);padding:40px 42px;
    display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  }
  .cta-band h2{font-size:26px;margin-bottom:8px}
  .cta-band p{font-size:15px;color:var(--text-2);max-width:620px}
  .cta-actions{display:flex;gap:12px;flex-wrap:wrap}

  .section{padding:72px 0 0}
  .section-tight{padding:56px 0 0}
  .section-last{padding-bottom:72px}

  /* ---------- footer ---------- */
  .site-footer{background:#fff;border-top:1px solid var(--border);margin-top:64px}
  .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.25fr;gap:36px;padding:52px 0 34px}
  .footer-brand .logo{margin-bottom:14px}
  .footer-desc{font-size:14px;color:var(--text-2);line-height:1.85;max-width:330px}
  .footer-title{font-size:15px;font-weight:600;margin-bottom:14px}
  .footer-links{display:flex;flex-direction:column;gap:10px}
  .footer-links a{font-size:14px;color:var(--text-2)}
  .footer-links a:hover{color:var(--brand)}
  .footer-contact{display:flex;flex-direction:column;gap:8px;font-size:14px;color:var(--text-2);margin-bottom:14px}
  .footer-contact strong{color:var(--text);font-weight:600}
  .footer-sub{display:flex;gap:8px}
  .footer-sub input{
    flex:1;min-width:0;border:1px solid var(--border);border-radius:8px;padding:9px 12px;font-size:13.6px;outline:none;
    transition:border-color .18s,box-shadow .18s;
  }
  .footer-sub input:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(43,108,143,.14)}
  .footer-bottom{
    border-top:1px solid var(--divider);padding:18px 0 26px;display:flex;align-items:center;justify-content:space-between;
    gap:12px;flex-wrap:wrap;font-size:13.4px;color:var(--text-3);
  }

  @media (max-width:1023px){
    .feed-layout{grid-template-columns:minmax(0,1fr);gap:26px}
    .sidebar{position:static}
    .news-feature{grid-template-columns:1fr}
    .news-feature .body{padding:22px}
    .notes-grid{grid-template-columns:1fr;gap:26px}
    .chan-scroll{grid-template-columns:repeat(2,minmax(0,1fr))}
    .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
    .hot-chips{display:none}
    .nav-search{min-width:160px}
  }
  @media (max-width:860px){
    .channel-nav{display:none}
    .channel-row{padding:8px 0;gap:12px}
    .burger{display:inline-flex}
    .brand-phone{display:none}
    .nav-search{flex:1;min-width:0}
  }
  @media (max-width:639px){
    .container{padding:0 16px}
    .page-hero{min-height:210px}
    .hero-inner{padding:24px 20px}
    .page-hero h1{font-size:26px}
    .news-grid{grid-template-columns:minmax(0,1fr)}
    .news-card{grid-template-columns:112px minmax(0,1fr)}
    .chan-scroll{grid-template-columns:minmax(0,1fr)}
    .footer-grid{grid-template-columns:1fr;gap:26px}
    .cta-band{padding:28px 22px}
    .section{padding:52px 0 0}
    .section-last{padding-bottom:52px}
    .news-feature .body{padding:18px}
  }