/* ============================================================
人形机器人学习站 · 存量页面接入壳样式(chrome-only)
用途: 给第 0-5 部分的旧页面接入 顶部导航/面包屑/前后翻页/页脚/
搜索浮层/自测题,而不改动它们原有的内容样式。
用法: 旧页面在 末尾引入
在 前引入 ,
并定义 window.PAGE 配置(参考 _assets/页面模板.html)。
注意: 本文件只含外壳样式,不要在这里加内容组件样式。
============================================================ */
*{box-sizing:border-box}
body{padding-top:62px!important}
.topnav{position:fixed;top:0;left:0;right:0;z-index:10000;background:rgba(13,17,23,.92);border-bottom:1px solid rgba(255,255,255,.07);font-family:"Microsoft YaHei","PingFang SC",sans-serif;color:#e6edf3;line-height:1.4}
.topnav *{margin:0;padding:0}
.nav-inner{max-width:1180px;margin:0 auto;display:flex;align-items:center;gap:12px;padding:0 14px;height:56px}
.nav-brand{display:flex;align-items:center;gap:8px;font-weight:800;color:#fff!important;font-size:15px;white-space:nowrap;text-decoration:none!important}
.brand-dot{width:10px;height:10px;border-radius:50%;background:#3b82f6;box-shadow:0 0 12px rgba(59,130,246,.9);flex-shrink:0}
.nav-links{display:flex;gap:2px;flex:1;overflow-x:auto;scrollbar-width:none}
.nav-links::-webkit-scrollbar{display:none}
.nav-links a{color:#9aa4b2!important;font-size:13px;padding:6px 10px;border-radius:7px;white-space:nowrap;text-decoration:none!important}
.nav-links a:hover{color:#fff!important;background:rgba(59,130,246,.15)}
.nav-search,.nav-done{background:rgba(59,130,246,.14);border:1px solid rgba(59,130,246,.35);color:#9ecbff;font-size:12.5px;padding:6px 12px;border-radius:8px;cursor:pointer;white-space:nowrap;font-family:inherit}
.nav-search:hover{background:rgba(59,130,246,.28);color:#fff}
.nav-search kbd{background:rgba(255,255,255,.12);border-radius:4px;padding:1px 5px;font-size:11px;margin-left:4px;color:#c9d1d9}
.nav-done.on{background:rgba(34,197,94,.18);border-color:rgba(34,197,94,.5);color:#86efac}
.breadcrumb{max-width:1180px;margin:0 auto;padding:14px 20px 0;font-size:12.5px;color:#6b7280;font-family:"Microsoft YaHei","PingFang SC",sans-serif}
.breadcrumb a{color:#8b949e;text-decoration:none}
.breadcrumb a:hover{color:#58a6ff;text-decoration:underline}
.breadcrumb .sep{margin:0 7px;color:#3d4450}
.prevnext{max-width:1080px;margin:34px auto 0;padding:0 20px;display:flex;gap:12px;font-family:"Microsoft YaHei","PingFang SC",sans-serif}
.pn-item{flex:1;background:rgba(22,27,34,.75);border:1px solid rgba(255,255,255,.09);border-radius:12px;padding:14px 18px;color:inherit;text-decoration:none!important;transition:.18s}
.pn-item:hover{border-color:rgba(59,130,246,.55);background:rgba(30,41,59,.85)}
.pn-item span{font-size:11.5px;color:#6b7280;display:block;margin-bottom:4px}
.pn-item b{font-size:14px;color:#9ecbff}
.pn-item.next{text-align:right}
.site-footer{text-align:center;color:#6b7280;font-size:12px;padding:26px 20px 40px;border-top:1px solid rgba(255,255,255,.06);margin-top:30px;font-family:"Microsoft YaHei","PingFang SC",sans-serif}
.site-footer a{color:#3b82f6;text-decoration:none}
/* ---- 搜索浮层 ---- */
.search-overlay{display:none;position:fixed;inset:0;background:rgba(4,8,14,.82);z-index:20000;align-items:flex-start;justify-content:center;padding:10vh 16px 16px}
.search-overlay.show{display:flex}
.search-box{width:100%;max-width:640px;background:#161b22;border:1px solid rgba(59,130,246,.4);border-radius:16px;overflow:hidden;box-shadow:0 24px 70px rgba(0,0,0,.6);font-family:"Microsoft YaHei","PingFang SC",sans-serif;color:#e6edf3}
.search-head{display:flex;align-items:center;justify-content:space-between;padding:12px 18px;font-size:13px;color:#8b949e;border-bottom:1px solid rgba(255,255,255,.07);font-weight:700}
.search-close{cursor:pointer;width:26px;height:26px;display:flex;align-items:center;justify-content:center;border-radius:7px;background:rgba(255,255,255,.07);color:#c9d1d9;font-size:13px}
.search-close:hover{background:rgba(239,68,68,.3);color:#fff}
.search-input{width:100%;background:transparent;border:none;outline:none;color:#fff;font-size:16px;padding:16px 18px;font-family:inherit;border-bottom:1px solid rgba(255,255,255,.07)}
.search-results{max-height:52vh;overflow-y:auto;padding:8px}
.search-count{font-size:12px;color:#6b7280;padding:8px 10px 4px}
.search-hit{display:block;padding:11px 14px;border-radius:10px;color:inherit!important;text-decoration:none!important}
.search-hit:hover{background:rgba(59,130,246,.12)}
.hit-t{font-size:14.5px;font-weight:700;color:#fff}
.hit-meta{font-size:12px;color:#6b7280;margin-top:3px}
.search-empty{text-align:center;color:#6b7280;font-size:13.5px;padding:34px 10px}
/* ---- 自测题(存量页面若后续加题可用) ---- */
.quiz{background:rgba(22,27,34,.8);border:1px solid rgba(255,255,255,.09);border-radius:12px;padding:16px 18px;margin:14px 0;font-family:"Microsoft YaHei","PingFang SC",sans-serif}
.quiz-q{font-size:14.5px;color:#fff;font-weight:600;margin-bottom:12px}
.quiz-options{display:flex;flex-direction:column;gap:8px}
.quiz-options button{text-align:left;background:rgba(13,17,23,.8);border:1px solid rgba(255,255,255,.12);color:#c9d1d9;font-size:13.5px;padding:9px 14px;border-radius:9px;cursor:pointer;font-family:inherit}
.quiz-options button:hover{border-color:#3b82f6;color:#fff}
.quiz-options button.correct{border-color:#22c55e;background:rgba(34,197,94,.15);color:#86efac;font-weight:700}
.quiz-options button.wrong{border-color:#ef4444;background:rgba(239,68,68,.15);color:#fca5a5}
.quiz-feedback{display:none;margin-top:10px;font-size:13px;font-weight:600}
.quiz-feedback.ok{display:block;color:#86efac}
.quiz-feedback.no{display:block;color:#fca5a5}
.quiz-explain{display:none;margin-top:10px;padding:10px 14px;background:rgba(59,130,246,.08);border-left:3px solid #3b82f6;border-radius:0 8px 8px 0;font-size:13px;color:#aab8c8;line-height:1.8}
.quiz-explain.show{display:block}
@media (max-width:900px){
.nav-links{display:none}
.prevnext{flex-direction:column}
.pn-item.next{text-align:left}
}
@media (max-width:600px){
body{padding-top:56px!important}
.nav-inner{height:52px;gap:8px}
.nav-search span.txt{display:none}
}
/* ---- 浅色外壳(苹果透亮玻璃) ---- */
.nav-theme{background:rgba(59,130,246,.14);border:1px solid rgba(59,130,246,.35);font-size:14px;padding:6px 10px;border-radius:8px;cursor:pointer;font-family:inherit;color:#9ecbff}
html:not([data-theme-early="dark"]) .nav-theme{background:rgba(37,99,235,.08);border-color:rgba(37,99,235,.25);color:#2563eb}
html:not([data-theme-early="dark"]) .topnav{background:rgba(255,255,255,.72);backdrop-filter:blur(22px) saturate(180%);-webkit-backdrop-filter:blur(22px) saturate(180%);border-bottom:1px solid rgba(60,80,120,.12)}
html:not([data-theme-early="dark"]) .nav-brand{color:#111827!important}
html:not([data-theme-early="dark"]) .nav-links a{color:#475569!important}
html:not([data-theme-early="dark"]) .nav-links a:hover{color:#111827!important;background:rgba(37,99,235,.08)}
html:not([data-theme-early="dark"]) .nav-search{background:rgba(37,99,235,.08);border-color:rgba(37,99,235,.28);color:#2563eb}
html:not([data-theme-early="dark"]) .nav-done{background:rgba(34,197,94,.1);border-color:rgba(34,197,94,.35);color:#15803d}
html:not([data-theme-early="dark"]) .breadcrumb{color:#94a3b8}
html:not([data-theme-early="dark"]) .breadcrumb a{color:#64748b}
html:not([data-theme-early="dark"]) .prevnext .pn-item{background:rgba(255,255,255,.62);border-color:rgba(255,255,255,.85);box-shadow:0 8px 26px rgba(50,80,140,.08)}
html:not([data-theme-early="dark"]) .prevnext .pn-item b{color:#2563eb}
html:not([data-theme-early="dark"]) .prevnext .pn-item span{color:#94a3b8}
html:not([data-theme-early="dark"]) .site-footer{color:#94a3b8;border-top-color:rgba(60,80,120,.12)}
html:not([data-theme-early="dark"]) .search-box{background:rgba(255,255,255,.9);border-color:rgba(37,99,235,.3)}
html:not([data-theme-early="dark"]) .search-input{color:#0f172a}
html:not([data-theme-early="dark"]) .search-head{color:#64748b}
html:not([data-theme-early="dark"]) .search-hit:hover{background:rgba(37,99,235,.08)}
html:not([data-theme-early="dark"]) .hit-t{color:#0f172a}
html:not([data-theme-early="dark"]) .hit-meta{color:#94a3b8}
html:not([data-theme-early="dark"]) .quiz{background:rgba(255,255,255,.62)}
html:not([data-theme-early="dark"]) .quiz-q{color:#0f172a}
html:not([data-theme-early="dark"]) .quiz-options button{background:rgba(255,255,255,.7);border-color:rgba(60,80,120,.16);color:#334155}
/* ---- 回到顶部按钮(存量页外壳) ---- */
.backtop{position:fixed;right:18px;bottom:22px;z-index:95;width:44px;height:44px;border-radius:50%;
background:rgba(37,99,235,.9);color:#fff;border:none;font-size:20px;font-weight:800;cursor:pointer;
display:flex;align-items:center;justify-content:center;box-shadow:0 8px 24px rgba(37,99,235,.4);transition:.2s}
.backtop:hover{transform:translateY(-3px);background:#2563eb}
html:not([data-theme-early="dark"]) .backtop{background:rgba(37,99,235,.88)}
/* ---- 术语悬浮提示气泡(存量页外壳) ---- */
.term-tip{position:fixed;z-index:400;max-width:260px;background:rgba(17,22,30,.95);border:1px solid rgba(59,130,246,.45);border-radius:10px;padding:10px 14px;font-size:12.5px;color:#c9d1d9;line-height:1.7;box-shadow:0 14px 40px rgba(0,0,0,.45);pointer-events:none}
.term-tip b{color:#9ecbff;margin-right:6px}
html:not([data-theme-early="dark"]) .term-tip{background:rgba(255,255,255,.97);border-color:rgba(37,99,235,.35);color:#334155}
html:not([data-theme-early="dark"]) .term-tip b{color:#2563eb}