/* ============================================================
   模具表面精饰工艺库 · 原创主题「镜钢青 × 琥珀」
   独立类名体系：.wrap / .doc-grid / .toc-panel / .lede /
   .metric-strip / table.data / .note-card / .cap-dock ...
   响应式折叠断点 1024px（与 skeleton_contract.yaml 一致）
   ============================================================ */

:root{
  --primary:#0E7490;
  --primary-deep:#0B4A5C;
  --primary-soft:#E7F2F5;
  --accent:#D97706;
  --accent-deep:#B45309;
  --accent-soft:#FBF2E5;
  --ink:#17222E;
  --muted:#5B6B7A;
  --line:#DCE4EA;
  --bg:#FFFFFF;
  --bg-soft:#F4F8FA;
  --bg-soft-2:#E9F1F4;
  --hero-grad:linear-gradient(128deg,#0A3D4C 0%,#0E7490 58%,#12809B 100%);
  --amber-grad:linear-gradient(120deg,#D97706,#B45309);
  --steel-grad:linear-gradient(120deg,#33475A,#141F2B);
  --radius:14px;
  --radius-sm:10px;
  --shadow:0 12px 32px rgba(23,34,46,.10);
  --shadow-sm:0 4px 14px rgba(23,34,46,.06);
  --header-h:68px;
  --maxw:1200px;
  --h2-inset:16px;          /* 文章/产品/列表：面包屑左缘 = 正文 H2 文字左缘 */
  --fold:1024px;            /* 响应式折叠断点（契约 responsive_folding.breakpoint） */
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0; padding-top:var(--header-h); color:var(--ink); background:var(--bg);
  font-family:"PingFang SC","Microsoft YaHei","Segoe UI",sans-serif;
  font-size:16px; line-height:1.8; -webkit-font-smoothing:antialiased;
}
a{color:var(--primary); text-decoration:none; text-underline-offset:.22em;}
a:hover{text-decoration:underline;}
img{max-width:100%; height:auto;}
:focus-visible{outline:3px solid var(--accent-deep); outline-offset:2px; border-radius:4px;}

.wrap{width:min(var(--maxw),calc(100% - 40px)); margin-inline:auto;}
.skip-link{position:absolute; left:16px; top:-120px; z-index:90; background:#fff; color:var(--ink);
  padding:10px 14px; border-radius:8px; box-shadow:var(--shadow-sm);}
.skip-link:focus{top:10px;}

.btn{display:inline-flex; align-items:center; gap:8px; padding:11px 22px; border-radius:999px;
  font-size:.98rem; font-weight:600; cursor:pointer; border:1px solid transparent;
  font-family:inherit; line-height:1.4; transition:transform .15s ease, box-shadow .15s ease;}
.btn:hover{text-decoration:none; transform:translateY(-1px);}
.btn-primary{background:var(--amber-grad); color:#fff; box-shadow:0 8px 20px rgba(180,83,9,.28);}
.btn-ghost{background:transparent; border-color:var(--primary); color:var(--primary);}
.hero .btn-ghost,.cta-band .btn-ghost{border-color:rgba(255,255,255,.55); color:#fff;}

/* ===== 顶栏（PC 固定） ===== */
.topbar{position:fixed; inset:0 0 auto 0; height:var(--header-h); z-index:50;
  background:rgba(255,255,255,.94); backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid var(--line);}
.topbar-inner{position:relative; display:flex; align-items:center; justify-content:space-between;
  gap:20px; height:var(--header-h);}
.brand{display:inline-flex; align-items:center; gap:10px; color:var(--ink); flex:none;}
.brand:hover{text-decoration:none;}
.brand-mark{color:var(--primary); display:inline-flex;}
.brand-text{display:flex; flex-direction:column; line-height:1.25;}
.brand-name{font-weight:700; font-size:1.08rem; letter-spacing:.01em;}
.brand-sub{font-size:.72rem; color:var(--muted); letter-spacing:.14em;}

.nav{display:flex; align-items:center; gap:2px;}
.nav-item{color:var(--ink); font-size:.95rem; background:none; border:none; cursor:pointer;
  font-family:inherit; padding:8px 12px; border-radius:8px; display:inline-flex; align-items:center;}
.nav-item:hover{background:var(--primary-soft); text-decoration:none; color:var(--primary-deep);}
.nav-group{position:relative;}
.nav-caret{width:0; height:0; margin-left:7px; border-left:4px solid transparent;
  border-right:4px solid transparent; border-top:5px solid currentColor;}
.nav-sub{list-style:none; margin:0; padding:8px; position:absolute; top:100%; left:50%;
  transform:translateX(-50%); background:#fff; border:1px solid var(--line); border-radius:12px;
  box-shadow:var(--shadow); min-width:132px; display:none; flex-direction:column; gap:2px; z-index:60;}
.nav-sub li a{display:block; padding:7px 12px; border-radius:8px; color:var(--ink); font-size:.9rem; white-space:nowrap;}
.nav-sub li a:hover{background:var(--primary-soft); text-decoration:none;}
.nav-sub-all{border-top:1px dashed var(--line); margin-top:4px; padding-top:4px;}
.nav-sub-all a{color:var(--primary);}
.nav-group:hover .nav-sub,.nav-group.open .nav-sub{display:flex;}

.burger{display:none; align-items:center; gap:8px; border:1px solid var(--line); background:#fff;
  color:var(--ink); padding:9px 14px; border-radius:10px; cursor:pointer; font-family:inherit; font-size:.92rem;}
.burger-box{display:inline-flex; flex-direction:column; gap:3px;}
.burger-bar{width:16px; height:2px; background:var(--ink); border-radius:2px;}

/* ===== 面包屑（位于布局容器内，左缘与正文 H2 严格对齐） ===== */
.crumb-wrap{grid-column:1 / -1; padding-left:var(--h2-inset); margin:18px 0 6px; font-size:.88rem; color:var(--muted);}
.crumb{list-style:none; display:flex; flex-wrap:wrap; gap:6px; margin:0; padding:0; align-items:center;}
.crumb-item + .crumb-item::before{content:"›"; margin-right:6px; color:#A9B8C4;}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--primary);}
.crumb [aria-current="page"]{color:var(--ink); font-weight:600;}

/* ===== 文章 / 产品详情布局 ===== */
.doc-grid{display:grid; grid-template-columns:minmax(0,1fr) 240px; gap:32px 40px;
  width:min(1120px,calc(100% - 40px)); margin-inline:auto; align-items:start; padding-bottom:56px;}
.doc-main{grid-column:1; grid-row:2; min-width:0; max-width:760px; padding-left:var(--h2-inset);}
.doc-cat{margin:0 0 10px; font-size:.88rem; color:var(--muted);}
.doc-cat a{color:var(--primary); font-weight:600;}
.doc-title{font-size:clamp(1.7rem,3.2vw,2.35rem); line-height:1.32; margin:0 0 16px; letter-spacing:-.01em;}

.lede{background:var(--primary-soft); border-left:4px solid var(--primary); padding:16px 20px;
  border-radius:0 var(--radius-sm) var(--radius-sm) 0; font-size:1.04rem; color:var(--ink); margin:0 0 18px;}

.metric-strip{display:grid; grid-template-columns:repeat(auto-fit,minmax(148px,1fr)); gap:12px; margin:0 0 18px;}
.metric-item{background:var(--bg-soft); border:1px solid var(--line); border-radius:var(--radius-sm); padding:11px 14px;}
.metric-value{display:block; font-weight:700; color:var(--primary-deep); font-size:1.02rem; line-height:1.4;}
.metric-label{display:block; font-size:.8rem; color:var(--muted); line-height:1.5;}

.doc-keywords{margin:0 0 4px; font-size:.9rem; color:var(--muted);}
.kw-head{display:inline-block; background:var(--accent-soft); color:var(--accent-deep);
  border:1px solid #F0DCC0; border-radius:999px; font-size:.78rem; padding:1px 10px; margin-right:8px;}
.doc-time{margin:0 0 22px; font-size:.85rem; color:var(--muted);}
.doc-tags{margin:0 0 8px;}
.tag-text{display:inline-block; background:var(--bg-soft-2); color:var(--primary-deep);
  border:1px solid var(--line); border-radius:999px; padding:2px 10px; font-size:.8rem; margin:2px 6px 2px 0;}

.doc-body{font-size:1.02rem;}
.doc-body h2{font-size:1.42rem; margin:38px 0 14px; padding-left:14px; border-left:4px solid var(--accent);
  scroll-margin-top:calc(var(--header-h) + 16px); line-height:1.4;}
.doc-body h3{font-size:1.16rem; margin:26px 0 10px; scroll-margin-top:calc(var(--header-h) + 16px);}
.doc-body p{margin:0 0 16px;}
.doc-body ul,.doc-body ol{margin:0 0 16px; padding-left:1.5em;}
.doc-body li{margin:6px 0;}
.doc-body strong{color:var(--ink);}
.doc-body blockquote{margin:18px 0; padding:12px 18px; background:var(--bg-soft-2);
  border-left:4px solid var(--primary); border-radius:0 10px 10px 0; color:var(--ink);}
.doc-body blockquote p:last-child{margin-bottom:0;}
.doc-body code{background:var(--bg-soft); padding:2px 6px; border-radius:6px; font-size:.92em;}

/* 参数 / 对比表（table_class: data，与契约一致） */
table.data{border-collapse:collapse; width:100%; margin:16px 0 24px; font-size:.94rem;
  box-shadow:var(--shadow-sm); border-radius:12px; overflow:hidden;}
table.data th,table.data td{border:1px solid var(--line); padding:10px 14px; text-align:left; vertical-align:top;}
table.data thead th{background:linear-gradient(120deg,var(--primary-deep),var(--primary)); color:#fff; font-weight:600;}
table.data tbody tr:nth-child(even){background:var(--bg-soft);}

/* 结论 / 实践经验 */
.note-card{margin:20px 0; padding:14px 18px; border-radius:var(--radius-sm); background:var(--primary-soft);
  border:1px solid #CFE4EA;}
.case-callout{margin:22px 0; padding:14px 18px; border-radius:var(--radius-sm);
  background:var(--accent-soft); border:1px dashed var(--accent);}
.case-callout p{margin:0;}
.callout-tag{display:inline-block; font-weight:700; color:var(--accent-deep); margin-right:8px;}

/* FAQ（faq_dom: bare_details —— 裸 <details>，不带 class） */
.faq-block{margin:30px 0 6px;}
.faq-block h2,.cat-faq h2{font-size:1.42rem; margin:0 0 14px; padding-left:14px; border-left:4px solid var(--accent);}
.faq-block details,.cat-faq details{border:1px solid var(--line); border-radius:var(--radius-sm);
  padding:12px 16px; margin:10px 0; background:#fff;}
.faq-block summary,.cat-faq summary{cursor:pointer; font-weight:600; color:var(--ink);}
.faq-block details[open] summary,.cat-faq details[open] summary{color:var(--primary-deep);}
.faq-block details p,.cat-faq details p{margin:10px 0 0; color:var(--muted); font-size:.96rem;}

/* 相关阅读 / 相关产品 */
.related-block{margin:26px 0 6px;}
.related-block h2{font-size:1.42rem; margin:0 0 12px; padding-left:14px; border-left:4px solid var(--accent);}
.related-list{list-style:none; margin:0; padding:0;}
.related-list li{padding:11px 0; border-bottom:1px dashed var(--line);}
.related-list li:last-child{border-bottom:none;}
.related-list a{font-weight:600;}
.related-why{display:block; color:var(--muted); font-size:.9rem; margin-top:2px;}

/* ===== 右侧目录（原生 details 折叠，sticky，禁 fixed） ===== */
.toc-aside{grid-column:2; grid-row:2; position:sticky; top:calc(var(--header-h) + 16px);
  max-height:calc(100vh - var(--header-h) - 40px); overflow-y:auto; align-self:start;}
.toc-panel{border:1px solid var(--line); border-radius:var(--radius-sm); background:var(--bg-soft); padding:6px 12px 10px;}
.toc-summary{cursor:pointer; font-weight:700; font-size:.92rem; color:var(--primary-deep);
  padding:8px 0; list-style:none; display:flex; justify-content:space-between; align-items:center;}
.toc-summary::-webkit-details-marker{display:none;}
.toc-summary::after{content:"▾"; color:var(--accent); transition:transform .15s ease;}
.toc-panel[open] .toc-summary::after{transform:rotate(180deg);}
.toc-list{list-style:none; margin:0; padding:0 0 4px;}
.toc-list a{display:block; padding:5px 0; color:var(--ink); font-size:.88rem; line-height:1.5;
  border-left:2px solid transparent; padding-left:10px;}
.toc-list a:hover{color:var(--primary); border-left-color:var(--primary); text-decoration:none;}
.toc-lv3 a{padding-left:22px; font-size:.84rem; color:var(--muted);}

/* ===== 列表 / 分类页 ===== */
.list-layout{display:grid; grid-template-columns:224px minmax(0,1fr); gap:32px 40px;
  width:min(1120px,calc(100% - 40px)); margin-inline:auto; align-items:start; padding-bottom:56px;}
.cat-aside{grid-column:1; grid-row:2; position:sticky; top:calc(var(--header-h) + 16px); align-self:start;}
.cat-panel{border:1px solid var(--line); border-radius:var(--radius-sm); background:var(--bg-soft); padding:6px 12px 10px;}
.cat-summary{cursor:pointer; font-weight:700; font-size:.95rem; color:var(--primary-deep);
  padding:8px 0; list-style:none; display:flex; justify-content:space-between; align-items:center;}
.cat-summary::-webkit-details-marker{display:none;}
.cat-summary::after{content:"▾"; color:var(--accent); transition:transform .15s ease;}
.cat-panel[open] .cat-summary::after{transform:rotate(180deg);}
.category-list{list-style:none; margin:0; padding:0 0 4px;}
.category-list li{margin:2px 0;}
.category-list a{display:block; padding:8px 12px; border-radius:8px; color:var(--ink); font-size:.92rem;}
.category-list a:hover{background:var(--primary-soft); text-decoration:none;}
.category-list .cat-active a{background:var(--primary); color:#fff;}
.category-list .cat-active a:hover{background:var(--primary-deep);}

.list-main{grid-column:2; grid-row:2; min-width:0;}
.list-title{font-size:clamp(1.5rem,2.8vw,2rem); margin:0 0 8px;}
.list-cat{color:var(--primary);}
.list-desc{color:var(--muted); margin:0 0 26px;}
.entry-list{list-style:none; margin:0; padding:0;}
.entry-item{padding:18px 0; border-bottom:1px solid var(--line);}
.entry-item:first-child{padding-top:0;}
.entry-title{font-size:1.12rem; font-weight:600; color:var(--ink); line-height:1.5;}
.entry-title:hover{color:var(--primary); text-decoration:none;}
.entry-summary{margin:6px 0 8px; color:var(--muted); font-size:.95rem;}
.entry-meta{margin:0;}
.entry-cat{font-size:.8rem; color:var(--primary-deep); background:var(--primary-soft);
  border:1px solid #CFE4EA; padding:2px 10px; border-radius:999px;}
.entry-cat:hover{text-decoration:none; background:#D8EAEF;}
.pager{display:flex; gap:8px; margin:26px 0 8px; flex-wrap:wrap;}
.pager-link{padding:6px 13px; border:1px solid var(--line); border-radius:8px; color:var(--ink); font-size:.92rem;}
.pager-link:hover{border-color:var(--primary); text-decoration:none;}
.pager-cur{padding:6px 13px; background:var(--primary); color:#fff; border-radius:8px; font-size:.92rem;}
.cat-faq{margin:34px 0 8px;}

/* ===== 叶子页 / 归档 / 404 ===== */
.page-wrap{width:min(900px,calc(100% - 40px)); margin-inline:auto; padding-bottom:56px; --h2-inset:48px;}
.page-wrap .crumb-wrap{padding-left:var(--h2-inset);}
.page-card{background:#fff; border:1px solid var(--line); border-radius:var(--radius);
  padding:48px; box-shadow:var(--shadow-sm);}
.page-title{font-size:clamp(1.6rem,3vw,2.1rem); margin:0 0 16px;}
.page-lead{color:var(--muted); margin:0 0 24px;}
.page-body h2{font-size:1.35rem; margin:34px 0 12px; padding-left:14px; border-left:4px solid var(--accent);}
.page-body h3{font-size:1.12rem; margin:22px 0 8px;}
.page-body p{margin:0 0 16px;}
.page-body ul,.page-body ol{margin:0 0 16px; padding-left:1.5em;}
.page-body li{margin:6px 0;}
.page-body blockquote{margin:18px 0; padding:12px 18px; background:var(--bg-soft-2);
  border-left:4px solid var(--primary); border-radius:0 10px 10px 0;}
.arch-h2{font-size:1.4rem; margin:36px 0 10px; padding-left:14px; border-left:4px solid var(--accent);}
.arch-h3{font-size:1.05rem; margin:20px 0 6px; color:var(--primary-deep);}
.archive-list{list-style:none; margin:0 0 8px; padding:0;}
.archive-list li{padding:6px 0; border-bottom:1px dashed var(--line);}
.notfound-card{text-align:center; padding:64px 48px;}
.notfound-code{font-size:3.2rem; font-weight:800; color:var(--primary); margin:0; letter-spacing:.06em;}
.notfound-desc{color:var(--muted);}
.notfound-actions{display:flex; gap:12px; justify-content:center; flex-wrap:wrap; margin-top:20px;}
.notfound-actions .btn-ghost{border-color:var(--primary); color:var(--primary);}

/* ===== 首页 ===== */
.hero{background:var(--hero-grad); color:#fff; padding:76px 0 60px; position:relative; overflow:hidden;}
.hero::before{content:""; position:absolute; width:520px; height:520px; right:-140px; top:-180px;
  border-radius:50%; background:radial-gradient(circle,rgba(255,255,255,.14),transparent 65%);}
.hero::after{content:""; position:absolute; width:360px; height:360px; left:-120px; bottom:-160px;
  border-radius:50%; background:radial-gradient(circle,rgba(217,119,6,.22),transparent 65%);}
.hero-inner{position:relative;}
.hero-eyebrow{margin:0 0 12px; font-size:.85rem; letter-spacing:.28em; color:#9FD8E4;}
.hero-title{margin:0 0 14px; font-size:clamp(1.9rem,4.2vw,2.9rem); line-height:1.25; letter-spacing:.01em;}
.hero-sub{margin:0 0 26px; max-width:760px; font-size:1.06rem; color:rgba(255,255,255,.88);}
.hero-cta{display:flex; gap:14px; flex-wrap:wrap;}
.hero-facts{list-style:none; margin:44px 0 0; padding:0; display:grid;
  grid-template-columns:repeat(auto-fit,minmax(210px,1fr)); gap:14px;}
.hero-facts li{background:rgba(255,255,255,.08); border:1px solid rgba(255,255,255,.18);
  border-radius:12px; padding:14px 16px;}
.fact-value{display:block; font-weight:700; font-size:1.02rem; color:#FFD9A0;}
.fact-label{display:block; font-size:.82rem; color:rgba(255,255,255,.78); margin-top:2px;}

.sec{padding:58px 0;}
.sec-soft{background:var(--bg-soft);}
.sec-title{font-size:1.55rem; margin:0 0 6px;}
.sec-title::before{content:""; display:inline-block; width:10px; height:10px; border-radius:3px;
  background:var(--amber-grad); margin-right:10px; vertical-align:2px;}
.sec-desc{color:var(--muted); margin:0 0 28px;}
.sec-more{margin:28px 0 0;}
.svc-grid,.scene-grid,.feat-grid{list-style:none; margin:0; padding:0; display:grid; gap:18px;}
.svc-grid{grid-template-columns:repeat(auto-fill,minmax(300px,1fr));}
.scene-grid{grid-template-columns:repeat(auto-fill,minmax(280px,1fr));}
.feat-grid{grid-template-columns:repeat(auto-fill,minmax(300px,1fr));}
.svc-card{background:#fff; border:1px solid var(--line); border-radius:var(--radius);
  padding:20px 22px; box-shadow:var(--shadow-sm);}
.svc-name{margin:0 0 8px; font-size:1.1rem;}
.svc-name a{color:var(--ink);}
.svc-name a:hover{color:var(--primary); text-decoration:none;}
.svc-desc{margin:0 0 12px; color:var(--muted); font-size:.93rem;}
.svc-more{font-size:.88rem; color:var(--primary); font-weight:600;}
.scene-card{background:#fff; border:1px solid var(--line); border-top:3px solid var(--accent);
  border-radius:var(--radius); padding:20px 22px; box-shadow:var(--shadow-sm);}
.scene-name{margin:0 0 8px; font-size:1.05rem;}
.scene-desc{margin:0 0 10px; color:var(--muted); font-size:.93rem;}
.scene-link{font-size:.88rem; color:var(--primary); font-weight:600;}
.feat-card{background:#fff; border:1px solid var(--line); border-radius:var(--radius); padding:20px 22px;}
.feat-cat{margin:0 0 8px; font-size:.82rem;}
.feat-cat a{color:var(--primary); font-weight:600;}
.feat-title{margin:0 0 8px; font-size:1.1rem; line-height:1.5;}
.feat-title a{color:var(--ink);}
.feat-title a:hover{color:var(--primary); text-decoration:none;}
.feat-summary{margin:0; color:var(--muted); font-size:.93rem;}

.cta-band{background:var(--steel-grad); color:#fff; padding:52px 0;}
.cta-title{margin:0 0 8px; font-size:1.5rem;}
.cta-desc{margin:0 0 22px; color:rgba(255,255,255,.8); max-width:720px;}
.cta-actions{display:flex; gap:14px; flex-wrap:wrap;}

/* ===== 悬浮工具胶囊（右侧居中） ===== */
.cap-dock{position:fixed; right:20px; top:50%; transform:translateY(-50%); z-index:60;
  display:flex; flex-direction:column; gap:10px;}
.cap-btn{display:inline-flex; align-items:center; gap:8px; border:none; cursor:pointer;
  border-radius:999px; padding:10px 16px; color:#fff; font-size:.88rem; font-weight:600;
  font-family:inherit; box-shadow:0 8px 22px rgba(23,34,46,.22); line-height:1.3;
  transition:transform .15s ease, box-shadow .15s ease;}
.cap-btn:hover{transform:translateX(-3px); text-decoration:none;}
.cap-wechat{background:linear-gradient(120deg,#0E7490,#0B4A5C);}
.cap-mail{background:var(--amber-grad);}
.cap-top{background:var(--steel-grad);}
.cap-ico{display:inline-flex;}

/* 名片弹层（300×500 原尺寸） */
.cap-modal{position:fixed; inset:0; z-index:80; display:flex; align-items:center; justify-content:center; padding:20px;}
.cap-modal[hidden]{display:none;}
.cap-modal-backdrop{position:absolute; inset:0; background:rgba(10,20,28,.74);}
.cap-modal-card{position:relative; background:#fff; border-radius:16px; padding:14px 14px 10px;
  box-shadow:0 24px 60px rgba(0,0,0,.35); max-width:calc(100vw - 40px);}
.cap-modal-close{position:absolute; top:-14px; right:-14px; width:32px; height:32px; border-radius:50%;
  border:none; background:#fff; color:var(--ink); font-size:18px; cursor:pointer; box-shadow:var(--shadow);}
.cap-card-img{display:block; width:300px; height:500px; max-width:calc(100vw - 68px); border-radius:8px;}
.cap-modal-tip{margin:8px 0 2px; text-align:center; font-size:.8rem; color:var(--muted);}

/* ===== 页脚 ===== */
.site-foot{background:#101B26; color:rgba(255,255,255,.72); padding:48px 0 36px; margin-top:8px;}
.foot-grid{display:grid; grid-template-columns:1.5fr 1fr 1fr 1fr; gap:32px;}
.foot-brand{color:#fff; font-weight:700; font-size:1.05rem; margin:0 0 10px;}
.foot-desc{margin:0; font-size:.88rem; line-height:1.7;}
.foot-title{color:#fff; font-weight:600; margin:0 0 12px; font-size:.95rem;}
.foot-links{list-style:none; margin:0; padding:0;}
.foot-links li{margin:0;}
.foot-links a{display:block; padding:4px 0; color:rgba(255,255,255,.72); font-size:.9rem;}
.foot-links a:hover{color:#fff;}
.foot-mail{margin:12px 0 0; font-size:.9rem;}
.mail-link{color:#FFC877;}

/* ===== 响应式：≤1024px 折叠（契约 responsive_folding.breakpoint） ===== */
@media (max-width:1024px){
  .burger{display:inline-flex;}
  .nav{display:none; position:absolute; top:var(--header-h); left:0; right:0; flex-direction:column;
    align-items:stretch; gap:2px; background:#fff; border-bottom:1px solid var(--line);
    box-shadow:var(--shadow); padding:12px 20px 16px; max-height:calc(100vh - var(--header-h)); overflow-y:auto;}
  .nav.open{display:flex;}
  .nav-item{width:100%; justify-content:space-between; padding:11px 8px; font-size:.98rem;}
  .nav-group{position:static;}
  .nav-group:hover .nav-sub{display:none;}
  .nav-sub{position:static; transform:none; display:none; border:none; box-shadow:none;
    padding:2px 0 6px 14px; min-width:0;}
  .nav-group.open .nav-sub{display:flex;}
  .nav-sub li a{padding:8px 10px; white-space:normal;}

  .doc-grid{grid-template-columns:1fr; gap:20px;}
  .doc-main{grid-column:1; grid-row:auto; max-width:none;}
  .toc-aside{grid-column:1; grid-row:auto; position:static; max-height:none; overflow:visible;}
  .list-layout{grid-template-columns:1fr; gap:20px;}
  .cat-aside{grid-column:1; grid-row:auto; position:static;}
  .list-main{grid-column:1; grid-row:auto;}
  .page-card{padding:32px 22px;}
  .page-wrap{--h2-inset:22px;}
  .cap-dock{right:12px;}
  .cap-btn{padding:9px 13px; font-size:.82rem;}
  .foot-grid{grid-template-columns:1fr 1fr; gap:24px;}
}

@media (max-width:560px){
  .hero{padding:56px 0 44px;}
  .hero-facts{grid-template-columns:1fr 1fr;}
  .foot-grid{grid-template-columns:1fr;}
  .page-card{padding:24px 16px;}
  .cap-btn .cap-txt{display:none;}
  .cap-btn{padding:11px;}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *{transition:none !important; animation:none !important;}
}