/* ============================================================
   micro.精密注塑模具.中国 —— 站点样式
   设计方向：深空底 + 冰蓝高光的工业科技感，明亮阅读区保证长文可读性
   ============================================================ */

:root{
  --ink:#070b18;
  --ink-2:#0b1220;
  --ink-3:#111b2e;
  --line:rgba(148,163,184,.20);
  --line-dark:rgba(15,23,42,.10);
  --text:#e8eef9;
  --muted:#93a3bd;
  --bg:#f5f7fb;
  --card:#ffffff;
  --text-dark:#0d1526;
  --muted-dark:#5c6b85;
  --accent:#12a5ff;
  --accent-2:#22d3ee;
  --accent-soft:rgba(18,165,255,.12);
  --accent-line:rgba(34,211,238,.45);
  --radius:16px;
  --radius-sm:10px;
  --wrap:1200px;
  --body-width:760px;
  --shadow:0 10px 30px rgba(15,23,42,.08);
  --shadow-dark:0 24px 60px rgba(0,0,0,.45);
  --mono:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
/* hidden 属性必须最高优先：避免类选择器的 display 覆盖它（弹层/抽屉关不掉） */
[hidden]{display:none!important}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;font-family:var(--sans);font-size:16px;line-height:1.75;
  color:var(--text-dark);background:var(--bg);letter-spacing:.01em;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
ul,ol{padding:0;margin:0;list-style:none}
h1,h2,h3,h4{line-height:1.35;margin:0;font-weight:700;letter-spacing:.01em}
p{margin:0 0 1em}
table{border-collapse:collapse;width:100%}
strong{font-weight:700}

.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 24px}
.narrow{max-width:820px}

.skip-link{position:absolute;left:-9999px;top:0}
.skip-link:focus{left:16px;top:16px;z-index:999;background:#fff;color:#000;padding:8px 14px;border-radius:8px}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:linear-gradient(180deg,rgba(7,11,24,.96),rgba(7,11,24,.86));
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:20px;height:70px}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.brand-mark{
  width:40px;height:40px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(140deg,rgba(18,165,255,.25),rgba(34,211,238,.12));
  border:1px solid var(--accent-line);
  box-shadow:inset 0 0 18px rgba(34,211,238,.16);
}
.brand-mark img{width:26px;height:26px}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text strong{color:#fff;font-size:16px;letter-spacing:.06em}
.brand-text em{font-style:normal;font-size:12px;color:var(--muted)}

.main-nav{margin-left:auto}
.main-nav ul{display:flex;gap:4px}
.main-nav a{
  display:block;padding:8px 14px;border-radius:999px;font-size:15px;color:#cbd7ea;
  transition:background .2s,color .2s;
}
.main-nav a:hover{background:rgba(148,163,184,.14);color:#fff}
.main-nav a.is-active{background:var(--accent-soft);color:#fff;box-shadow:inset 0 0 0 1px var(--accent-line)}

.header-actions{display:flex;align-items:center;gap:10px;margin-left:12px}
.cat-drawer-toggle,.nav-toggle{
  display:none;align-items:center;gap:8px;border:1px solid var(--line);
  background:rgba(148,163,184,.10);color:#e8eef9;border-radius:999px;cursor:pointer;
  padding:8px 14px;font-family:var(--sans);font-size:14px;
}
.cat-drawer-icon{width:14px;height:12px;position:relative;display:inline-block}
.cat-drawer-icon::before,.cat-drawer-icon::after{
  content:"";position:absolute;left:0;right:0;height:1.5px;background:var(--accent-2);border-radius:2px;
}
.cat-drawer-icon::before{top:2px}
.cat-drawer-icon::after{top:7px}
.nav-toggle{flex-direction:column;gap:4px;padding:11px 12px}
.nav-toggle span{display:block;width:16px;height:1.6px;background:#e8eef9;border-radius:2px}

.cat-drawer{
  border-top:1px solid var(--line);background:rgba(7,11,24,.98);
  max-height:calc(100vh - 70px);overflow-y:auto;
}
.cat-drawer-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;padding:18px 0 24px}
.cat-drawer h3{color:#fff;font-size:14px;letter-spacing:.08em;margin-bottom:10px}
/* 分类列表：默认适配浅色卡片（侧栏 .cat-side），深色抽屉内由 .cat-drawer 作用域覆盖 */
.category-list{list-style:none;margin:0;padding:0}
.category-list li{border-bottom:1px solid var(--line-dark)}
.category-list li:last-child{border-bottom:0}
.category-list a{
  display:block;padding:10px 12px;border-radius:10px;font-size:15px;font-weight:600;color:#1b2a44;
  transition:background .2s,color .2s,box-shadow .2s;
}
.category-list a em{display:block;font-style:normal;font-weight:400;font-size:12.5px;color:var(--muted-dark);margin-top:3px}
.category-list a:hover{background:rgba(15,23,42,.06);color:#0d1526}
.category-list li.is-active a{
  background:var(--accent-soft);color:#0f3559;font-weight:700;
  box-shadow:inset 0 0 0 1px var(--accent-line),inset 3px 0 0 var(--accent);
}
.category-list li.is-active a em{color:#24557f}

/* 深色抽屉（移动端/顶部分类）中的分类列表 */
.cat-drawer .category-list li{border-bottom:1px solid rgba(148,163,184,.18)}
.cat-drawer .category-list a{color:#dbe5f3;font-weight:500}
.cat-drawer .category-list a em{color:#a8b8d0}
.cat-drawer .category-list a:hover{background:rgba(148,163,184,.14);color:#fff}
.cat-drawer .category-list li.is-active a{background:var(--accent-soft);color:#fff;box-shadow:inset 0 0 0 1px var(--accent-line)}

/* ---------- Hero ---------- */
.hero{position:relative;background:var(--ink);color:var(--text);overflow:hidden;padding:96px 0 88px}
.hero::after{
  content:"";position:absolute;inset:auto 0 0 0;height:220px;
  background:linear-gradient(180deg,transparent,rgba(18,165,255,.10));
  pointer-events:none;
}
.hero-grid{
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(148,163,184,.10) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(148,163,184,.10) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(120% 90% at 20% 0%,#000 30%,transparent 75%);
  -webkit-mask-image:radial-gradient(120% 90% at 20% 0%,#000 30%,transparent 75%);
}
.hero-inner{position:relative;z-index:2;max-width:960px}
.hero-eyebrow{
  font-family:var(--mono);font-size:13px;letter-spacing:.24em;color:var(--accent-2);
  text-transform:uppercase;margin-bottom:18px;
}
.hero h1{
  font-size:clamp(32px,5vw,58px);letter-spacing:.02em;margin-bottom:20px;
  background:linear-gradient(100deg,#fff 20%,#9fd7ff 90%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-lead{font-size:clamp(16px,1.6vw,19px);color:#c3d0e6;max-width:720px;margin-bottom:28px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 26px;border-radius:999px;font-size:15.5px;font-weight:600;
  border:1px solid transparent;cursor:pointer;transition:transform .2s,box-shadow .2s,background .2s;
}
.btn-primary{background:linear-gradient(120deg,var(--accent),var(--accent-2));color:#04121f;box-shadow:0 12px 30px rgba(18,165,255,.32)}
.btn-ghost{border-color:var(--line);color:#e8eef9;background:rgba(148,163,184,.08)}
.btn:hover{transform:translateY(-2px)}
.hero-points{display:flex;flex-wrap:wrap;gap:10px 22px}
.hero-points li{position:relative;padding-left:16px;color:#a9bcd6;font-size:14.5px}
.hero-points li::before{content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;border-radius:2px;background:var(--accent-2)}

/* ---------- Metrics ---------- */
.metrics{background:var(--ink-2);color:var(--text);border-top:1px solid var(--line);padding:34px 0}
.section-kicker{
  font-family:var(--mono);font-size:12px;letter-spacing:.2em;color:var(--accent-2);
  text-transform:uppercase;margin-bottom:10px;
}
.metrics ul{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.metrics li{border-left:2px solid var(--accent-line);padding:4px 0 4px 16px}
.metrics li strong{display:block;font-family:var(--mono);font-size:clamp(20px,2.4vw,28px);color:#fff;line-height:1.2}
.metrics li span{display:block;font-size:14px;color:#c3d0e6;margin-top:4px}
.metrics li em{display:block;font-style:normal;font-size:12.5px;color:#7f92ae;margin-top:4px}

/* ---------- Sections ---------- */
.section{padding:80px 0}
.section-alt{background:#eef2f9}
.section-title{font-size:clamp(23px,3vw,34px);color:var(--text-dark);margin-bottom:12px}
.section-lead{color:var(--muted-dark);max-width:760px;margin-bottom:32px}

.cap-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.cap{
  position:relative;background:var(--card);border:1px solid var(--line-dark);border-radius:var(--radius);
  padding:26px 24px 24px;box-shadow:var(--shadow);transition:transform .25s,box-shadow .25s,border-color .25s;
}
.cap:hover{transform:translateY(-4px);box-shadow:0 18px 44px rgba(15,23,42,.12);border-color:rgba(18,165,255,.35)}
.cap-index{font-family:var(--mono);font-size:12px;color:var(--accent);letter-spacing:.16em}
.cap h3{font-size:18.5px;margin:8px 0 10px}
.cap p{color:var(--muted-dark);font-size:15px}
.cap-points{margin-top:12px;border-top:1px dashed var(--line-dark);padding-top:12px}
.cap-points li{position:relative;padding-left:16px;font-size:14px;color:var(--muted-dark);margin-bottom:6px}
.cap-points li::before{content:"";position:absolute;left:0;top:.62em;width:6px;height:6px;border-radius:50%;background:var(--accent-2)}

.tree-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px}
.tree-item{background:var(--card);border:1px solid var(--line-dark);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}
.tree-item h3{font-size:18px;margin-bottom:8px}
.tree-item h3 a:hover{color:var(--accent)}
.tree-item p{color:var(--muted-dark);font-size:14.5px;min-height:76px}
.tree-go{font-size:14px;color:var(--accent);font-weight:600}
.tree-go::after{content:" →"}

.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px;counter-reset:step}
.steps li{
  position:relative;background:var(--card);border:1px solid var(--line-dark);border-radius:var(--radius-sm);
  padding:20px 20px 20px 58px;box-shadow:var(--shadow);
}
.steps .step-num{
  position:absolute;left:18px;top:18px;width:26px;height:26px;border-radius:8px;display:grid;place-items:center;
  font-family:var(--mono);font-size:13px;color:#fff;background:linear-gradient(140deg,var(--accent),var(--accent-2));
}
.steps h3{font-size:16.5px;margin-bottom:6px}
.steps p{font-size:14.5px;color:var(--muted-dark);margin:0}

.rfq-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:18px}
.rfq-list li{background:var(--card);border:1px solid var(--line-dark);border-radius:var(--radius-sm);padding:20px;box-shadow:var(--shadow)}
.rfq-list h3{font-size:16px;margin-bottom:6px}
.rfq-list p{font-size:14.5px;color:var(--muted-dark);margin:0}

.view-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:14px;margin-bottom:34px}
.view-list li a{
  display:block;background:var(--card);border:1px solid var(--line-dark);border-radius:var(--radius-sm);
  padding:16px 18px;box-shadow:var(--shadow);transition:border-color .2s,transform .2s;
}
.view-list li a:hover{border-color:rgba(18,165,255,.4);transform:translateY(-2px)}
.view-list strong{display:block;font-size:16px;color:var(--text-dark);margin-bottom:4px}
.view-list span{font-size:13.5px;color:var(--muted-dark)}
.more{margin-top:26px;font-size:15px}
.more a{color:var(--accent);font-weight:600}

/* ---------- Page head / detail ---------- */
.page-head{padding:38px 24px 26px}
.eyebrow{font-family:var(--mono);font-size:12px;letter-spacing:.18em;color:var(--accent);text-transform:uppercase;margin-bottom:10px}
.page-head h1{font-size:clamp(26px,3.4vw,40px);color:var(--text-dark);margin-bottom:14px;max-width:900px}
.lead{font-size:17px;color:var(--muted-dark);max-width:820px;margin-bottom:0}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:18px}
.tag-text{
  display:inline-block;font-size:13px;color:#1f5c86;background:var(--accent-soft);
  border:1px solid rgba(18,165,255,.22);border-radius:999px;padding:3px 12px;
}
.meta-time{font-size:13px;color:var(--muted-dark);font-family:var(--mono)}

.crumb{margin-bottom:14px}
.crumb ol{display:flex;flex-wrap:wrap;gap:6px;font-size:13px;color:var(--muted-dark)}
.crumb li+li::before{content:"›";margin-right:6px;color:#9aa9c2}
.crumb a:hover{color:var(--accent)}

.detail-wrap{display:grid;grid-template-columns:minmax(0,var(--body-width)) 240px;gap:32px;align-items:start;padding-bottom:70px}
.detail-body{background:var(--card);border:1px solid var(--line-dark);border-radius:var(--radius);padding:34px 38px;box-shadow:var(--shadow)}
.detail-body h2{font-size:22px;color:var(--text-dark);margin:38px 0 14px;padding-top:6px;border-top:1px solid var(--line-dark)}
.detail-body h2:first-of-type{margin-top:8px;border-top:0}
.detail-body h3{font-size:18px;color:#123; margin:24px 0 10px}
.detail-body p{color:#243449;margin-bottom:14px}
.detail-body ul,.detail-body ol{margin:0 0 18px;padding-left:22px}
.detail-body ul{list-style:disc}
.detail-body ol{list-style:decimal}
.detail-body li{margin-bottom:8px;color:#243449}
.detail-body blockquote{
  margin:20px 0;padding:16px 20px;border-left:3px solid var(--accent);
  background:rgba(18,165,255,.06);border-radius:0 var(--radius-sm) var(--radius-sm) 0;color:#1c2b40;
}
.detail-body blockquote p:last-child{margin-bottom:0}
.detail-body hr{border:0;border-top:1px solid var(--line-dark);margin:28px 0}
.detail-body code{font-family:var(--mono);font-size:14px;background:#eef2f9;padding:1px 5px;border-radius:5px}

table.data{margin:18px 0 24px;font-size:14.5px;border:1px solid var(--line-dark);border-radius:var(--radius-sm);overflow:hidden}
table.data th,table.data td{border:1px solid var(--line-dark);padding:10px 12px;text-align:left;vertical-align:top}
table.data thead th{background:#eef2f9;color:var(--text-dark);font-size:14px;white-space:nowrap}
table.data tbody tr:nth-child(even){background:#fafbfd}
table.data td:first-child{font-weight:600;color:#16324d;white-space:nowrap}

.callout{margin:28px 0;border-radius:var(--radius-sm);padding:20px 22px}
.callout-practice{background:linear-gradient(135deg,rgba(18,165,255,.10),rgba(34,211,238,.08));border:1px solid rgba(18,165,255,.28)}
.callout h2{font-size:17px;margin:0 0 8px !important;border:0 !important;padding:0 !important;color:#0f3559}
.side-title{font-size:13px;font-family:var(--mono);letter-spacing:.14em;color:var(--text-dark);margin-bottom:12px;text-transform:uppercase}
.side-note{font-size:13px;color:var(--muted-dark);margin-top:14px}

/* ---------- TOC ---------- */
.toc-aside{position:sticky;top:80px;max-height:calc(100vh - 100px);overflow-y:auto}
.toc{border:1px solid var(--line-dark);border-radius:var(--radius);background:var(--card);padding:18px 16px;box-shadow:var(--shadow)}
.toc-title{font-size:13px;font-family:var(--mono);color:var(--muted-dark);letter-spacing:.1em;margin-bottom:10px}
.toc ol{counter-reset: toc}
.toc li{margin-bottom:6px;font-size:14px;line-height:1.5}
.toc li.toc-3{padding-left:12px;font-size:13.5px;color:var(--muted-dark)}
.toc a{color:#2b3d55;display:block;padding:4px 8px;border-radius:7px;border-left:2px solid transparent}
.toc a:hover{color:var(--accent)}
.toc a.is-active{background:var(--accent-soft);border-left-color:var(--accent);color:#0f3559;font-weight:600}

/* ---------- FAQ ---------- */
.faq{margin-top:30px;border-top:1px solid var(--line-dark);padding-top:12px}
.faq h2{font-size:20px;margin-bottom:14px}
.faq details{border:1px solid var(--line-dark);border-radius:var(--radius-sm);margin-bottom:10px;background:#fbfcfe}
.faq details[open]{border-color:rgba(18,165,255,.35);background:#fff}
.faq summary{cursor:pointer;padding:14px 18px;font-weight:600;font-size:15.5px;color:#152740;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";float:right;color:var(--accent);font-family:var(--mono)}
.faq details[open] summary::after{content:"–"}
.faq details p{margin:0;padding:0 18px 16px;color:#31465f;font-size:15px}

/* ---------- List page ---------- */
.list-wrap{display:grid;grid-template-columns:264px minmax(0,1fr);gap:32px;align-items:start;padding-bottom:70px}
.cat-side{position:sticky;top:80px;background:var(--card);border:1px solid var(--line-dark);border-radius:var(--radius);padding:18px 16px;box-shadow:var(--shadow)}
.cat-content{min-width:0}
.cat-intro{background:var(--card);border:1px solid var(--line-dark);border-radius:var(--radius);padding:22px 24px;margin-bottom:20px;box-shadow:var(--shadow)}
.cat-intro p:last-child{margin-bottom:0}
.entry-list{border-top:1px solid var(--line-dark)}
.entry{border-bottom:1px solid var(--line-dark);padding:20px 4px}
.entry-title{font-size:18px;font-weight:600;color:#12314e;display:inline-block}
.entry-title:hover{color:var(--accent)}
.entry-desc{font-size:15px;color:var(--muted-dark);margin:8px 0 10px}
.entry-meta{display:flex;flex-wrap:wrap;gap:14px;font-size:13px;color:#5f708d;font-family:var(--mono);margin:0}
.pagination{display:flex;flex-wrap:wrap;gap:8px;margin-top:26px}
.pagination a,.pagination .is-disabled{
  border:1px solid var(--line-dark);border-radius:8px;padding:6px 12px;font-size:14px;background:#fff;color:#2b3d55;
}
.pagination a.is-active{background:var(--accent-soft);border-color:var(--accent-line);color:#0f3559;font-weight:600}
.pagination .is-disabled{color:#9aa9c2}

/* ---------- CTA / Footer ---------- */
.cta{background:var(--ink);color:var(--text);padding:64px 0}
.cta-inner{text-align:center;max-width:760px}
.cta h2{font-size:clamp(21px,2.6vw,30px);margin-bottom:12px}
.cta p{color:#a9bcd6;margin-bottom:24px}
.site-footer{background:var(--ink-2);color:var(--muted);border-top:1px solid var(--line);padding:56px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:28px;padding-bottom:34px}
.footer-col h3{color:#fff;font-size:15px;margin-bottom:12px;letter-spacing:.04em}
.footer-col ul li{margin-bottom:8px;font-size:14px}
.footer-col a:hover,.linklike:hover{color:#fff}
.footer-lead{font-size:14px;color:#93a3bd;max-width:360px}
.footer-domain{font-family:var(--mono);font-size:13px;color:var(--accent-2);margin-top:10px}
.linklike{background:none;border:0;padding:0;font:inherit;color:inherit;cursor:pointer;text-align:left}
.footer-bottom{
  border-top:1px solid var(--line);padding:16px 24px;display:flex;flex-wrap:wrap;gap:10px 24px;
  font-size:13px;color:#7f92ae;justify-content:space-between;max-width:var(--wrap);margin:0 auto;
}

/* ---------- Dock ---------- */
.dock{
  position:fixed;right:18px;top:50%;transform:translateY(-50%);z-index:70;
  display:flex;flex-direction:column;gap:12px;
}
.dock-btn{
  width:56px;border:1px solid rgba(148,163,184,.28);cursor:pointer;
  background:rgba(11,18,32,.92);backdrop-filter:blur(10px);
  color:#e8eef9;border-radius:999px;padding:12px 6px 8px;
  display:flex;flex-direction:column;align-items:center;gap:4px;
  box-shadow:0 12px 32px rgba(0,0,0,.35);transition:transform .2s,border-color .2s,background .2s;
}
.dock-btn:hover{transform:translateY(-3px);border-color:var(--accent-line);background:rgba(18,165,255,.16)}
.dock-btn svg{width:22px;height:22px;fill:var(--accent-2)}
.dock-btn span{font-size:11.5px;letter-spacing:.02em;line-height:1.2}
.dock-btn.is-hidden{opacity:0;pointer-events:none;transform:translateY(10px)}

/* ---------- WeChat modal ---------- */
.wechat-modal{position:fixed;inset:0;z-index:90;display:grid;place-items:center;padding:20px}
.wechat-modal[hidden]{display:none}
.wechat-mask{position:absolute;inset:0;background:rgba(4,8,18,.72);backdrop-filter:blur(4px)}
.wechat-panel{
  position:relative;background:#fff;border-radius:18px;padding:16px 16px 18px;
  box-shadow:var(--shadow-dark);max-width:340px;width:100%;
}
.wechat-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
.wechat-head h2{font-size:16px;color:var(--text-dark)}
.wechat-close{
  border:1px solid var(--line-dark);background:#fff;border-radius:50%;width:28px;height:28px;
  font-size:19px;line-height:1;cursor:pointer;color:#43536c;
}
.wechat-card{width:300px;height:500px;border-radius:12px;overflow:hidden;background:#f1f4f9}
.wechat-card img{width:300px;height:500px;object-fit:cover}
.wechat-tip{font-size:13px;color:var(--muted-dark);margin:12px 2px 0}

/* ---------- Responsive ---------- */
@media (max-width:1180px){
  .cap-grid{grid-template-columns:repeat(2,1fr)}
  .metrics ul{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:1080px){
  .main-nav{display:none}
  .nav-toggle,.cat-drawer-toggle{display:inline-flex}
  .cat-drawer-toggle{display:inline-flex}
  .header-inner{justify-content:space-between}
  .brand-text em{display:none}
  .detail-wrap{grid-template-columns:minmax(0,1fr)}
  .toc-aside{position:static;max-height:none;order:-1}
  .list-wrap{grid-template-columns:minmax(0,1fr)}
  .cat-side{position:static;display:none}
  .site-header.is-open .main-nav{display:block;position:absolute;left:0;right:0;top:70px;background:rgba(7,11,24,.98);padding:10px 24px 16px}
  .site-header.is-open .main-nav ul{flex-direction:column;gap:2px}
}
@media (max-width:860px){
  .hero{padding:70px 0 60px}
  .section{padding:56px 0}
  .detail-body{padding:24px 20px}
  .page-head{padding:28px 24px 18px}
  .footer-grid{grid-template-columns:1fr 1fr}
  .cat-drawer-grid{grid-template-columns:1fr}
  .dock{right:10px;gap:10px}
  .dock-btn{width:50px;padding:10px 4px 7px}
  .dock-btn span{font-size:11px}
}
@media (max-width:640px){
  .cap-grid,.tree-list,.metrics ul,.rfq-list,.view-list,.steps{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .tree-item p{min-height:0}
  .wrap{padding:0 18px}
  .wechat-panel{max-width:300px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  html{scroll-behavior:auto}
}