/* =============================================================
   涨知识啦 —— 前台样式
   移动端优先 · 卡片式 · 暖橙主色
   ============================================================= */
:root{
  --brand:#e8531f;
  --brand-dark:#c8400f;
  --brand-soft:#fff3ed;
  --ink:#1c1f23;
  --ink-2:#3d434b;
  --muted:#7a828c;
  --line:#e8eaee;
  --bg:#f6f7f9;
  --card:#ffffff;
  --green:#1f9254;
  --amber:#c97a12;
  --red:#c0392b;
  --radius:14px;
  --radius-sm:10px;
  --shadow:0 1px 2px rgba(20,25,35,.04), 0 8px 24px rgba(20,25,35,.05);
  --shadow-hover:0 2px 6px rgba(20,25,35,.06), 0 16px 36px rgba(20,25,35,.09);
  --wrap:1200px;
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body.front{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font:15px/1.75 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
}
img{max-width:100%;height:auto;display:block;border:0}
a{color:inherit;text-decoration:none}
a:hover{color:var(--brand)}
h1,h2,h3,h4{margin:0 0 .5em;line-height:1.35;font-weight:700}
p{margin:0 0 1em}
ul,ol{margin:0;padding:0;list-style:none}
code{background:#f1f3f6;padding:2px 6px;border-radius:5px;font-size:.9em}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 18px;width:100%}
.muted{color:var(--muted)}
.small{font-size:13px}
.strong{font-weight:600;color:var(--ink)}
.ta-r{text-align:right}
.ta-c{text-align:center}

/* ---------- 顶栏 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.94);
  backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:18px;height:64px}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{
  width:38px;height:38px;border-radius:11px;
  background:linear-gradient(140deg,var(--brand),#f2864a);
  color:#fff;font-weight:800;font-size:19px;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 14px rgba(232,83,31,.28)
}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-text strong{font-size:17px;letter-spacing:.5px}
.logo-text em{font-style:normal;font-size:11px;color:var(--muted)}
.site-nav{display:flex;gap:4px;flex:1 1 auto;overflow:hidden}
.nav-item{
  padding:7px 12px;border-radius:9px;font-size:14.5px;color:var(--ink-2);
  white-space:nowrap;
}
.nav-item:hover{background:var(--brand-soft);color:var(--brand)}
.nav-item.active{background:var(--brand-soft);color:var(--brand);font-weight:600}
.header-search{display:flex;flex:0 1 260px;min-width:0}
.header-search input{
  flex:1;min-width:0;border:1px solid var(--line);border-right:0;
  border-radius:9px 0 0 9px;padding:8px 12px;font-size:14px;background:#fafbfc;outline:none;
}
.header-search input:focus{border-color:#f0b699;background:#fff}
.header-search button{
  border:1px solid var(--brand);background:var(--brand);color:#fff;
  border-radius:0 9px 9px 0;padding:8px 14px;font-size:14px;cursor:pointer;
}
.header-search button:hover{background:var(--brand-dark)}
.nav-toggle{
  display:none;background:none;border:1px solid var(--line);border-radius:9px;
  width:40px;height:38px;font-size:17px;cursor:pointer;color:var(--ink-2)
}

.site-main{min-height:60vh;padding-bottom:44px}

/* ---------- Hero ---------- */
.hero{
  background:
    radial-gradient(1200px 320px at 12% -10%, #ffe9dd 0%, transparent 60%),
    linear-gradient(180deg,#fff 0%,#fbfbfc 100%);
  border-bottom:1px solid var(--line);
  padding:40px 0 34px;
}
.hero-inner{display:grid;grid-template-columns:1.15fr .85fr;gap:36px;align-items:center}
.hero-kicker{
  display:inline-block;margin:0 0 12px;font-size:12.5px;letter-spacing:1px;
  color:var(--brand);background:var(--brand-soft);padding:4px 12px;border-radius:20px
}
.hero-title{font-size:32px;letter-spacing:-.4px;margin-bottom:14px}
.hero-sub{font-size:15.5px;color:var(--ink-2);max-width:620px}
.hero-stats{display:flex;gap:26px;margin-top:18px;font-size:13.5px;color:var(--muted)}
.hero-stats strong{font-size:20px;color:var(--brand);margin-right:4px;font-weight:700}
.hero-cats{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.hero-cat{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:16px;display:flex;flex-direction:column;gap:3px;transition:.18s;
}
.hero-cat:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:#f3cdb8}
.hero-cat-icon{font-size:21px}
.hero-cat strong{font-size:15.5px}
.hero-cat em{font-style:normal;font-size:12.5px;color:var(--muted);min-height:34px}
.hero-cat-num{font-size:11.5px;color:var(--brand)}

/* ---------- 布局 ---------- */
.layout-main{display:grid;grid-template-columns:minmax(0,1fr) 306px;gap:30px;padding-top:26px;align-items:start}
.content-col{min-width:0}
.sidebar{position:sticky;top:82px;display:flex;flex-direction:column;gap:16px}

.block{margin-bottom:30px}
.block-head{display:flex;align-items:baseline;justify-content:space-between;gap:14px;margin-bottom:16px}
.block-title{font-size:19px;margin:0}
.block-title em{font-style:normal;font-size:13px;color:var(--muted);font-weight:400;margin-left:8px}
.block-more{font-size:13.5px;color:var(--brand)}

/* ---------- 卡片网格 ---------- */
.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:18px}
.a-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;display:flex;flex-direction:column;transition:.18s;
}
.a-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#f0d2c1}
.a-card-cover{
  display:block;aspect-ratio:16/9;background:#f2f4f7;overflow:hidden;position:relative
}
.a-card-cover img{width:100%;height:100%;object-fit:cover}
.a-card-cover .ph{
  display:flex;align-items:center;justify-content:center;width:100%;height:100%;
  font-size:19px;font-weight:700;letter-spacing:2px;
}
.ph-0{background:linear-gradient(135deg,#ffe8db,#ffd2bc);color:#c8400f}
.ph-1{background:linear-gradient(135deg,#dff1ea,#c4e6d9);color:#15694a}
.ph-2{background:linear-gradient(135deg,#e2ecfa,#c9dcf6);color:#1f4f8f}
.ph-3{background:linear-gradient(135deg,#fbe9dd,#f4d5bf);color:#8a4a1c}
.a-card-body{padding:14px 15px 15px;display:flex;flex-direction:column;gap:8px;flex:1}
.a-card-meta{display:flex;flex-wrap:wrap;gap:6px}
.chip{
  font-size:11.5px;padding:2px 9px;border-radius:20px;background:#f1f3f6;color:var(--ink-2)
}
a.chip:hover{background:var(--brand-soft);color:var(--brand)}
.chip-hot{background:#fdece7;color:var(--brand)}
.chip-rec{background:#e9f6ee;color:var(--green)}
.a-card-title{font-size:16px;line-height:1.5;margin:0}
.a-card-title a{display:block}
.a-card-desc{font-size:13.5px;color:var(--muted);margin:0;flex:1}
.a-card-foot{display:flex;justify-content:space-between;font-size:12px;color:#9aa2ac;padding-top:4px;border-top:1px dashed var(--line)}

/* ---------- 排行 / 侧栏 ---------- */
.rank-list li{display:flex;align-items:center;gap:10px;padding:10px 0;border-bottom:1px dashed var(--line)}
.rank-list li:last-child{border-bottom:0}
.rank-list a{flex:1;font-size:14.5px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.rank{
  flex:0 0 auto;width:22px;height:22px;border-radius:7px;background:#f1f3f6;color:var(--muted);
  font-size:12px;display:flex;align-items:center;justify-content:center;font-weight:600
}
.rank-top{background:var(--brand);color:#fff}
.side-box{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px}
.side-title{font-size:15px;margin:0 0 12px;padding-left:10px;border-left:3px solid var(--brand);line-height:1.2}
.side-cats{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.side-cats a{
  display:flex;align-items:center;gap:6px;font-size:13.5px;padding:9px 10px;
  background:#fafbfc;border-radius:var(--radius-sm);border:1px solid var(--line)
}
.side-cats a:hover{background:var(--brand-soft);border-color:#f3cdb8}
.side-cat-icon{font-size:15px}
.side-hot li{padding:9px 0;border-bottom:1px dashed var(--line);display:flex;gap:9px}
.side-hot li:last-child{border-bottom:0}
.side-hot a{display:flex;gap:9px;align-items:flex-start;font-size:14px;line-height:1.55}
.side-hot-title{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

/* ---------- 面包屑 ---------- */
.breadcrumb{display:flex;gap:7px;align-items:center;font-size:13px;color:var(--muted);padding:18px 0 6px;flex-wrap:wrap}
.breadcrumb .cur{color:var(--ink-2);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:52vw}

/* ---------- 分类页头 ---------- */
.cat-head{padding:8px 0 14px}
.cat-title{font-size:25px;margin-bottom:8px}
.cat-intro{color:var(--ink-2);font-size:14.5px;margin-bottom:12px;max-width:820px}
.cat-bar{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;
  border-top:1px solid var(--line);padding-top:12px}
.sort-tabs{display:flex;gap:6px}
.sort-tabs a{padding:5px 13px;border-radius:20px;font-size:13.5px;background:#fff;border:1px solid var(--line)}
.sort-tabs a.active{background:var(--brand);border-color:var(--brand);color:#fff}

/* ---------- 文章详情 ---------- */
.article-detail{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px 30px 30px}
.art-head{margin-bottom:18px}
.art-cat{display:inline-block;font-size:13px;color:var(--brand);background:var(--brand-soft);padding:4px 12px;border-radius:20px;margin-bottom:12px}
.art-title{font-size:28px;letter-spacing:-.3px;margin-bottom:10px}
.art-subtitle{font-size:15.5px;color:var(--ink-2);margin-bottom:12px}
.art-meta{display:flex;gap:16px;flex-wrap:wrap;font-size:13px;color:var(--muted);padding-bottom:16px;border-bottom:1px solid var(--line)}
.art-est{color:#9aa2ac}

.verdict-box{
  background:linear-gradient(180deg,#fff8f4,#fffdfb);
  border:1px solid #f6d9c8;border-left:4px solid var(--brand);
  border-radius:var(--radius);padding:18px 20px;margin:20px 0;
}
.verdict-title{font-size:16px;margin:0 0 8px;color:var(--brand-dark);display:flex;align-items:center;gap:8px}
.verdict-icon{
  width:21px;height:21px;border-radius:50%;background:var(--brand);color:#fff;
  font-size:12px;display:inline-flex;align-items:center;justify-content:center
}
.verdict-body{font-size:15px;color:var(--ink-2)}
.verdict-body p:last-child{margin-bottom:0}

/* GEO：直接回答块（放在最前，供 AI 直接摘取） */
.direct-answer{
  background:linear-gradient(180deg,#f1f7ff,#fbfdff);
  border:1px solid #cfe1f7;border-left:4px solid #2f6fb3;
  border-radius:var(--radius);padding:18px 20px;margin:20px 0 14px;
}
.da-title{font-size:16px;margin:0 0 8px;color:#1e5289;display:flex;align-items:center;gap:8px}
.da-title::before{content:"答";width:21px;height:21px;border-radius:50%;background:#2f6fb3;color:#fff;font-size:12px;display:inline-flex;align-items:center;justify-content:center;font-weight:700}
.da-body{font-size:15.5px;color:var(--ink-2);line-height:1.85}
.da-body p:last-child{margin-bottom:0}

/* GEO：关键事实清单 */
.key-facts{background:#fafbfc;border:1px solid var(--line);border-radius:var(--radius);padding:16px 20px;margin:0 0 20px}
.kf-title{font-size:15px;margin:0 0 10px;color:var(--ink);display:flex;align-items:center;gap:8px}
.kf-title::before{content:"★";color:#e8531f;font-size:13px}
.kf-list{margin:0;display:grid;gap:0}
.kf-row{display:flex;gap:12px;align-items:baseline;padding:8px 0;border-top:1px dashed var(--line)}
.kf-row:first-child{border-top:0}
.kf-row dt{flex:0 0 108px;font-size:13.5px;font-weight:600;color:var(--muted)}
.kf-row dd{margin:0;font-size:14.5px;color:var(--ink-2);line-height:1.7}

/* 上下篇内链 */
.prev-next{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:20px 0 6px}
.pn-item{display:flex;flex-direction:column;gap:4px;background:#fafbfc;border:1px solid var(--line);border-radius:var(--radius);padding:12px 14px;transition:.2s}
.pn-item:hover{border-color:var(--brand);background:#fff8f4}
.pn-label{font-size:12px;color:var(--muted)}
.pn-title{font-size:14px;color:var(--ink);font-weight:600;line-height:1.5}
.pn-next{text-align:right}
@media(max-width:640px){.prev-next{grid-template-columns:1fr}.kf-row dt{flex-basis:88px}}

.toc-box{background:#fafbfc;border:1px solid var(--line);border-radius:var(--radius);padding:14px 18px;margin-bottom:22px}
.toc-title{font-size:13.5px;color:var(--muted);margin:0 0 8px;font-weight:600;letter-spacing:.5px}
.toc-box ol{list-style:none;counter-reset:toc;display:grid;gap:5px}
.toc-box li{counter-increment:toc;font-size:14px}
.toc-box li::before{content:counter(toc) ". ";color:var(--brand);font-weight:600;margin-right:2px}
.toc-box a:hover{color:var(--brand)}

.sec-title{font-size:20px;margin-bottom:6px;padding-left:12px;border-left:4px solid var(--brand)}
.sec-desc{font-size:14px;color:var(--muted);margin-bottom:16px}

/* 分档推荐 */
.tier-block{margin-bottom:20px}
.tier-head{display:flex;align-items:center;gap:10px;margin-bottom:10px}
.tier-badge{
  font-size:13.5px;font-weight:700;color:#fff;
  background:linear-gradient(135deg,var(--brand),#f2864a);
  padding:4px 14px;border-radius:20px
}
.tier-items{display:grid;gap:12px}
.pick{
  display:grid;grid-template-columns:120px minmax(0,1fr);gap:14px;
  border:1px solid var(--line);border-radius:var(--radius);padding:13px;background:#fff;transition:.16s
}
.pick:hover{border-color:#f3cdb8;box-shadow:var(--shadow)}
.pick-media{position:relative;aspect-ratio:1/1;border-radius:var(--radius-sm);overflow:hidden;background:#f2f4f7}
.pick-media img{width:100%;height:100%;object-fit:cover}
.pick-media .ph{display:flex;align-items:center;justify-content:center;height:100%;font-size:12.5px;color:#a8b0ba;letter-spacing:1px}
.pick-badge{
  position:absolute;top:6px;left:6px;background:var(--brand);color:#fff;
  font-size:11px;padding:2px 8px;border-radius:20px
}
.pick-body{display:flex;flex-direction:column;gap:6px;min-width:0}
.pick-name{font-size:15.5px;margin:0}
.pick-price{display:flex;align-items:baseline;gap:10px}
.pick-price strong{font-size:19px;color:var(--brand)}
.pick-plat{font-size:12px;color:var(--muted);background:#f1f3f6;padding:1px 8px;border-radius:20px}
.pick-reason{font-size:13.5px;color:var(--ink-2);margin:0;flex:1}
.pick-btn{
  align-self:flex-start;background:var(--brand);color:#fff;font-size:13.5px;
  padding:7px 16px;border-radius:8px;font-weight:600
}
.pick-btn:hover{background:var(--brand-dark);color:#fff}
.aff-note{font-size:12.5px;color:#9aa2ac;margin:10px 0 0}

/* 参数表 */
.table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;border:1px solid var(--line);border-radius:var(--radius);margin-bottom:22px}
.param-table{width:100%;border-collapse:collapse;font-size:14px;min-width:520px}
.param-table th,.param-table td{padding:11px 14px;text-align:left;border-bottom:1px solid var(--line)}
.param-table th{background:#fafbfc;font-weight:600;color:var(--ink-2);white-space:nowrap}
.param-table tr:last-child td{border-bottom:0}
.param-table tbody tr:nth-child(even){background:#fcfcfd}

/* 避坑段 */
.pitfall-box{
  background:linear-gradient(180deg,#fffdf5,#fffefb);
  border:1px solid #f0e0bd;border-left:4px solid var(--amber);
  border-radius:var(--radius);padding:18px 20px;margin:22px 0
}
.pitfall-title{font-size:16px;margin:0 0 8px;color:#8a5a08;display:flex;align-items:center;gap:8px}
.pitfall-icon{
  width:21px;height:21px;border-radius:50%;background:var(--amber);color:#fff;
  font-size:13px;display:inline-flex;align-items:center;justify-content:center;font-weight:700
}
.pitfall-body{font-size:15px;color:var(--ink-2)}

/* 富文本 */
.rich{font-size:15.5px;color:var(--ink-2)}
.rich h2{font-size:20px;color:var(--ink);margin:26px 0 10px;padding-left:12px;border-left:4px solid var(--brand)}
.rich h3{font-size:17px;color:var(--ink);margin:20px 0 8px}
.rich p{margin:0 0 14px}
.rich ul{list-style:disc;padding-left:22px;margin-bottom:14px}
.rich ol{list-style:decimal;padding-left:22px;margin-bottom:14px}
.rich li{margin-bottom:6px}
.rich img{border-radius:var(--radius-sm);margin:14px 0}
.rich blockquote{
  margin:14px 0;padding:12px 16px;background:#fafbfc;border-left:3px solid var(--line);
  color:var(--muted);border-radius:0 var(--radius-sm) var(--radius-sm) 0
}
.rich table{width:100%;border-collapse:collapse;font-size:14px;margin:14px 0}
.rich th,.rich td{border:1px solid var(--line);padding:9px 12px}
.rich strong{color:var(--ink)}

/* FAQ */
.faq-list{margin:0}
.faq-list dt{font-weight:600;color:var(--ink);padding:11px 0 4px;font-size:15px}
.faq-list dt::before{content:"Q ";color:var(--brand);font-weight:700}
.faq-list dd{margin:0 0 12px;padding:0 0 12px 16px;color:var(--ink-2);border-bottom:1px dashed var(--line);font-size:14.5px}

/* 免责 */
.disclaimer-box{
  background:#fafbfc;border:1px dashed var(--line);border-radius:var(--radius);
  padding:14px 18px;margin:24px 0 16px
}
.disclaimer-box h3{font-size:13.5px;color:var(--muted);margin:0 0 6px;letter-spacing:.5px}
.disclaimer-box p{font-size:13px;color:var(--muted);margin:0}
.art-tags{display:flex;flex-wrap:wrap;gap:8px;align-items:center;font-size:13px}
.art-tags a{background:#f1f3f6;padding:4px 12px;border-radius:20px;font-size:13px}
.art-tags a:hover{background:var(--brand-soft);color:var(--brand)}

/* ---------- 分页 ---------- */
.pager{margin:26px 0 10px}
.pager ul{display:flex;flex-wrap:wrap;gap:7px;justify-content:center}
.pager a,.pager span{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:38px;height:38px;padding:0 12px;border-radius:9px;
  background:#fff;border:1px solid var(--line);font-size:14px
}
.pager a:hover{border-color:var(--brand);color:var(--brand)}
.pager .active span{background:var(--brand);border-color:var(--brand);color:#fff;font-weight:600}
.pager .disabled span{color:#c2c8d0;background:#fafbfc}
.pager .gap span{border:0;background:none}

/* ---------- 搜索 ---------- */
.search-head{padding:6px 0 18px}
.search-big{display:flex;gap:0;max-width:560px;margin:12px 0}
.search-big input{flex:1;min-width:0;border:1px solid var(--line);border-right:0;border-radius:10px 0 0 10px;padding:11px 14px;font-size:15px;outline:none}
.search-big input:focus{border-color:#f0b699}
.search-big button{border:1px solid var(--brand);background:var(--brand);color:#fff;padding:11px 22px;border-radius:0 10px 10px 0;font-size:15px;cursor:pointer}
.hot-words{display:flex;flex-wrap:wrap;gap:8px;align-items:center;font-size:13.5px}
.hot-words a{background:#fff;border:1px solid var(--line);padding:3px 11px;border-radius:20px}

/* ---------- 单页 / 空态 / 错误 ---------- */
.single-page{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px 30px;max-width:860px;margin:0 auto 30px}
.single-page h1{font-size:24px;margin-bottom:16px}
.empty-box{background:var(--card);border:1px dashed var(--line);border-radius:var(--radius);padding:40px 20px;text-align:center;color:var(--muted)}
.btn{
  display:inline-block;background:var(--brand);color:#fff;padding:9px 20px;border-radius:9px;font-size:14.5px
}
.btn:hover{background:var(--brand-dark);color:#fff}
.btn-ghost{background:#fff;color:var(--ink-2);border:1px solid var(--line)}
.btn-ghost:hover{color:var(--brand);border-color:var(--brand);background:#fff}
.err-wrap{text-align:center;padding:70px 18px}
.err-code{font-size:64px;font-weight:800;color:#e4e7ec;line-height:1}
.err-wrap h1{font-size:22px;margin:10px 0}
.err-actions{display:flex;gap:10px;justify-content:center;margin-top:18px}

/* ---------- 广告位 ---------- */
.ad-slot{margin:18px 0;text-align:center;overflow:hidden}
.ad-slot img{display:inline-block;max-width:100%}
.ad-home_top,.ad-list_top,.ad-search_top{margin:16px auto}
.ad-global_float{
  position:fixed;right:14px;bottom:14px;z-index:70;max-width:180px;margin:0;
  border-radius:12px;overflow:hidden;box-shadow:var(--shadow-hover)
}
.ad-global_float img{max-width:180px}
.side-ad{padding:10px}

/* ---------- 页脚 ---------- */
.site-footer{background:#fff;border-top:1px solid var(--line);padding:34px 0 26px;margin-top:16px}
.footer-cols{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:30px}
.footer-col h4{font-size:14.5px;margin-bottom:10px}
.footer-col p{font-size:13.5px;color:var(--muted);margin-bottom:8px}
.footer-col ul li{margin-bottom:7px;font-size:13.5px}
.footer-col ul a{color:var(--ink-2)}
.footer-col ul a:hover{color:var(--brand)}
.footer-bottom{margin-top:26px;padding-top:16px;border-top:1px solid var(--line);font-size:13px;color:var(--muted)}
.footer-bottom a{color:var(--muted)}
.footer-bottom p{margin-bottom:6px}

.preview-bar{
  background:#2f6fb3;color:#fff;text-align:center;font-size:13px;padding:7px 14px;position:relative;z-index:80
}
.preview-bar a{color:#fff;text-decoration:underline}

/* ---------- 响应式 ---------- */
@media (max-width:1080px){
  .layout-main{grid-template-columns:minmax(0,1fr) 270px;gap:22px}
  .hero-inner{grid-template-columns:1fr;gap:24px}
}
@media (max-width:900px){
  .site-nav{display:none}
  .site-nav.open{
    display:flex;flex-direction:column;position:absolute;top:64px;left:0;right:0;
    background:#fff;border-bottom:1px solid var(--line);padding:10px 18px 16px;gap:2px;
    box-shadow:var(--shadow);z-index:59
  }
  .nav-toggle{display:block}
  .header-search{flex:1 1 auto}
  .layout-main{grid-template-columns:1fr}
  .sidebar{position:static;order:2}
  .footer-cols{grid-template-columns:1fr 1fr}
}
@media (max-width:640px){
  .wrap{padding:0 14px}
  .hero{padding:26px 0 24px}
  .hero-title{font-size:23px}
  .hero-sub{font-size:14.5px}
  .hero-stats{gap:16px;font-size:12.5px}
  .hero-stats strong{font-size:17px}
  .hero-cats{grid-template-columns:1fr 1fr;gap:10px}
  .hero-cat{padding:12px}
  .hero-cat em{min-height:0;display:none}
  .card-grid{grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:12px}
  .a-card-title{font-size:14.5px}
  .a-card-desc{font-size:12.5px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
  .header-inner{gap:10px;height:58px}
  .logo-text em{display:none}
  .header-search input{font-size:13.5px;padding:7px 10px}
  .header-search button{padding:7px 11px;font-size:13.5px}
  .article-detail{padding:18px 16px 22px;border-radius:12px}
  .art-title{font-size:21px}
  .art-meta{gap:12px;font-size:12.5px}
  .sec-title{font-size:17.5px}
  .pick{grid-template-columns:88px minmax(0,1fr);gap:11px;padding:11px}
  .pick-price strong{font-size:17px}
  .pick-btn{font-size:13px;padding:6px 13px}
  .rich{font-size:15px}
  .rich h2{font-size:18px}
  .single-page{padding:18px 16px}
  .footer-cols{grid-template-columns:1fr;gap:20px}
  .cat-title{font-size:21px}
  .ad-global_float{max-width:132px}
  .ad-global_float img{max-width:132px}
}