:root{
    --bg:#F7F1D8;--deep:#E8DFA8;--paper:#FFF9E8;--soft:#F0E8C0;--ink:#16140C;--text:#2A2614;--muted:#5A5428;--aux:#7A7440;--yellow:#E8C430;--line:rgba(22,20,12,.12);--focus:rgba(232,196,48,.55);--shadow:0 12px 28px rgba(22,20,12,.10);--radius:14px;--max:960px
}
*{box-sizing:border-box}html{scroll-behavior:smooth;overflow-x:hidden}body{margin:0;background:var(--bg);color:var(--text);font:15px/1.7 system-ui,-apple-system,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;overflow-x:hidden}a{color:inherit;text-decoration:none}button,input{font:inherit}button{cursor:pointer}img{display:block;max-width:100%;object-fit:contain;object-position:center}.skip-link{position:fixed;left:12px;top:-60px;z-index:120;background:var(--ink);color:var(--yellow);padding:8px 12px;border-radius:8px}.skip-link:focus{top:8px}.head-wrap,.footer-wrap,.content-wrap{width:min(calc(100% - 32px),var(--max));margin:0 auto}.site-head{position:fixed;inset:0 0 auto 0;z-index:80}.zhi-edge{height:20px;background:var(--ink);color:var(--yellow);font-size:12px}.zhi-edge-inner{height:20px;display:flex;align-items:center;justify-content:space-between}.text-button{border:0;background:transparent;color:var(--yellow);padding:0 4px;min-height:20px}.zhi-headline{height:54px;background:var(--paper);border-bottom:1px solid var(--line)}.brand-row{height:54px;display:flex;align-items:center;justify-content:space-between}.brand-home{display:flex;align-items:center;min-height:44px;max-width:180px}.brand-home img,.drawer-brand img,.footer-brand img{height:24px;width:auto;object-fit:contain}.brand-fallback{font-size:16px;font-weight:800;letter-spacing:.04em;color:var(--ink)}.head-actions{display:flex;gap:8px;align-items:center}.head-app,.menu-button{height:44px;display:inline-flex;align-items:center;justify-content:center;border-radius:12px;padding:0 14px;font-size:14px}.head-app{background:linear-gradient(135deg,#16140C 0%,#E8C430 100%);color:var(--ink);border:1px solid var(--ink);font-weight:800}.menu-button{background:var(--paper);color:var(--ink);border:1px solid var(--ink);font-weight:700}.zhi-grid{height:48px;background:var(--paper);border-bottom:1px solid var(--line)}.zhi-grid-inner{height:48px;display:flex;align-items:center;gap:10px}.zhi-grid a{width:120px;height:28px;border:1px solid var(--ink);border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:13px;background:var(--paper);color:var(--ink)}.zhi-grid a.is-current{background:var(--ink);color:var(--yellow)}.site-main{padding-top:122px;min-height:60vh}.page-shell{width:min(calc(100% - 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/* 内页差异布局 */
.page-intro{margin-bottom:26px;padding-bottom:20px;border-bottom:1px solid var(--line)}.zhiji-stack{display:grid;gap:16px}.zhiji-stack article{background:var(--paper);border:1px solid var(--line);border-radius:16px;padding:20px;box-shadow:var(--shadow)}.zhiji-stack article:nth-child(even){margin-left:48px}.zhimian-bars{display:grid;gap:12px}.zhimian-bars article{display:grid;grid-template-columns:150px 1fr;gap:18px;align-items:start;padding:16px;background:var(--paper);border:1px solid var(--line);border-radius:14px}.zhimian-bars article:nth-child(even){grid-template-columns:1fr 150px}.zhimian-bars article:nth-child(even) h2{grid-column:2}.zhimian-bars article:nth-child(even) .bar-copy{grid-column:1;grid-row:1}.zhibu-folds{display:grid;gap:14px}.zhibu-folds article{display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);gap:0;background:var(--paper);border:1px solid var(--line);border-radius:16px;overflow:hidden}.zhibu-folds .fold-side{background:var(--deep);padding:18px}.zhibu-folds .fold-copy{padding:18px}.single-notes{max-width:760px;margin:auto}.single-notes article{border-left:4px solid var(--yellow);padding:4px 0 4px 18px;margin:0 0 24px}.single-notes .media-slot{margin:14px 0}.periods-long{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;align-items:start}.periods-long article{background:var(--paper);border:1px solid var(--line);border-radius:16px;padding:18px}.periods-long article:nth-child(2){margin-top:34px}.periods-long article:nth-child(3){margin-top:68px}.status-rows{display:grid;gap:12px}.status-rows article{display:grid;grid-template-columns:130px 1fr;gap:16px;padding:18px;border-radius:16px;background:var(--paper);border:1px solid var(--line)}.checklist{display:grid;gap:14px}.checklist article{background:var(--paper);border:1px solid var(--line);border-radius:16px;padding:18px}.checklist ul,.method-flow ul,.legal-sections ul{margin:10px 0 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var(--line);border-radius:16px;padding:22px;text-align:center}.center-cards article p{text-align:left}.app-page-center{max-width:760px;margin:auto;text-align:center}.app-page-center .media-slot{margin:16px auto}.app-page-center .copy{text-align:left}.install-steps{display:grid;gap:14px}.install-steps article{display:grid;grid-template-columns:160px 1fr;gap:18px;padding:18px;background:var(--paper);border:1px solid var(--line);border-radius:16px}.legal-sections{display:grid;gap:14px}.legal-sections section{background:var(--paper);border:1px solid var(--line);border-radius:16px;padding:20px}.help-matrix{display:grid;grid-template-columns:1fr 1fr;gap:14px}.help-matrix article{background:var(--paper);border:1px solid var(--line);border-radius:16px;padding:18px}.faq-list{display:grid;gap:12px}.faq-list article{background:var(--paper);border:1px solid var(--line);border-radius:16px;padding:18px}.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.contact-grid article{background:var(--paper);border:1px solid var(--line);border-radius:16px;padding:18px}.about-banner{height:200px;margin-bottom:20px}.about-sections{display:grid;gap:16px}.about-sections section{background:var(--paper);border:1px solid var(--line);border-radius:16px;padding:20px}.site-footer{background:var(--ink);color:var(--bg);border-top:2px solid var(--yellow);padding:30px 0 76px;font-size:13px}.footer-brand{display:flex;align-items:center;gap:14px;margin-bottom:20px}.footer-brand div{display:flex;flex-direction:column}.footer-brand strong{color:var(--yellow);font-size:16px}.footer-brand span{font-size:12px}.footer-links{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.footer-links section{display:flex;flex-direction:column;gap:6px}.footer-links h2{font-size:13px;color:var(--yellow);margin:0 0 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var(--ink);background:var(--paper);color:var(--ink);border-radius:12px}.drawer-groups{display:grid;gap:14px;margin-top:14px}.drawer-groups section{border-top:1px solid var(--line);padding-top:10px}.drawer-groups h2{font-size:14px;margin:0 0 6px}.drawer-groups a{display:grid;grid-template-columns:74px 1fr;gap:8px;padding:8px 4px;border-radius:8px}.drawer-groups a:hover{background:var(--soft);opacity:1}.drawer-groups b{color:var(--ink)}.drawer-groups span{font-size:12px;color:var(--muted)}.search-panel{position:fixed;left:50%;top:82px;transform:translate(-50%,-16px);z-index:91;width:min(calc(100% - 32px),760px);background:var(--paper);border:1px solid var(--ink);border-radius:16px;box-shadow:var(--shadow);padding:18px;opacity:0;visibility:hidden;pointer-events:none;transition:.2s}.search-panel.is-open{transform:translate(-50%,0);opacity:1;visibility:visible;pointer-events:auto}.search-panel h2{margin:0}.search-label{display:block;font-size:12px;color:var(--muted);margin:12px 0 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@media (max-width:760px){.head-wrap,.footer-wrap,.content-wrap,.page-shell{width:calc(100% - 32px)}.zhi-grid{display:none}.site-main{padding-top:74px}.head-app,.menu-button{padding:0 11px}.brand-home{max-width:140px}.parallel-strip,.fold-pairs,.explain-cards,.period-grid,.periods-long,.help-matrix,.contact-grid,.footer-links{grid-template-columns:1fr}.stack-card+.stack-card,.stack-card:nth-child(3),.zhiji-stack article:nth-child(even){margin-left:0}.status-row,.status-rows article,.zhimian-bars article,.zhimian-bars article:nth-child(even),.zhibu-folds article,.topic-list article,.topic-list article:nth-child(even),.install-steps article{grid-template-columns:1fr}.zhimian-bars article:nth-child(even) h2,.zhimian-bars article:nth-child(even) .bar-copy,.topic-list article:nth-child(even) h2,.topic-list article:nth-child(even) .topic-copy{grid-column:auto;grid-row:auto}.periods-long article:nth-child(2),.periods-long article:nth-child(3){margin-top:0}.site-drawer{top:80px;right:8px;width:92vw;min-width:0;max-width:none;max-height:calc(100vh - 94px)}.search-panel{inset:0;transform:none;width:100%;border:0;border-radius:0;background:var(--ink);color:var(--yellow);padding:24px 16px 76px}.search-panel.is-open{transform:none}.search-panel h2,.search-panel p,.search-label{color:var(--yellow)}.search-panel .close-button{background:var(--yellow);color:var(--ink)}.search-panel input{background:var(--paper)}.search-links a{border-color:var(--yellow);color:var(--yellow)}.mobile-bottom{display:grid;grid-template-columns:repeat(4,1fr);position:fixed;z-index:84;left:0;right:0;bottom:0;height:calc(48px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);background:var(--paper);border-top:1px solid var(--ink)}.mobile-bottom a{min-height:48px;display:grid;place-items:center;font-size:13px}.mobile-bottom a.is-current{background:var(--yellow);color:var(--ink);font-weight:800}.site-footer{padding-bottom:92px}.page-shell{padding-top:28px}.mini-index{flex-wrap:wrap}.about-banner{height:200px}}