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button{width:48px;min-width:48px;padding:0;display:grid;place-items:center}.topbar-share svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round}.share-toast{position:fixed;z-index:80;left:50%;bottom:calc(82px + env(safe-area-inset-bottom));transform:translate(-50%);padding:9px 13px;border-radius:999px;background:#172434;color:#fff;font-size:12px;font-weight:800;box-shadow:0 10px 28px #1423312e;white-space:nowrap}@media(max-width:420px){.topbar{grid-template-columns:48px minmax(0,1fr) 92px}.topbar-actions{grid-template-columns:repeat(2,44px)}.topbar-actions button{width:44px;min-width:44px}}.theme-setting{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:72px;padding:14px 15px;margin:0 0 10px;border:1px solid var(--line);border-radius:var(--radius-md);background:var(--card);box-shadow:var(--shadow-card)}.theme-setting>div{display:grid;gap:3px}.theme-setting b{font-size:14px}.theme-setting 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.theme-setting{background:var(--card);color:var(--ink);border-color:var(--line)}:root[data-theme=dark] .empty,:root[data-theme=dark] .home-muted,:root[data-theme=dark] .training-level-group,:root[data-theme=dark] .document-guide-meta span{background:#111c26;color:var(--muted);border-color:var(--line)}:root[data-theme=dark] .topbar{color:var(--ink);background:#0d161ff0;border-color:var(--line)}:root[data-theme=dark] .bottom-nav{background:#0e1720f7;border-color:var(--line);box-shadow:0 -8px 28px #0000003d}:root[data-theme=dark] .bottom-nav button{color:#8193a2}:root[data-theme=dark] .bottom-nav .active{color:var(--blue)}:root[data-theme=dark] .search-input,:root[data-theme=dark] .feedback-form input,:root[data-theme=dark] .feedback-form select,:root[data-theme=dark] .feedback-form textarea{background:#0d1720;color:var(--ink);border-color:#314251}:root[data-theme=dark] .search-input::placeholder,:root[data-theme=dark] .feedback-form input::placeholder,:root[data-theme=dark] .feedback-form textarea::placeholder{color:#718594}:root[data-theme=dark] .body-copy,:root[data-theme=dark] .step-block p,:root[data-theme=dark] .standard-block p,:root[data-theme=dark] .callout p,:root[data-theme=dark] .why-block p,:root[data-theme=dark] .section-block p,:root[data-theme=dark] .checklist li,:root[data-theme=dark] .interactive-checklist label>span{color:#bcc9d3}:root[data-theme=dark] .article-actions button,:root[data-theme=dark] .sop-feedback-callout button{background:#111c26;color:var(--blue);border-color:#344757}:root[data-theme=dark] .interactive-checklist li{border-color:var(--line)}:root[data-theme=dark] .interactive-checklist input[type=checkbox]{background:#0c151e;border-color:#617382}:root[data-theme=dark] .photo-stage{background:#080e14}:root[data-theme=dark] .callout.tip{background:#12261b;border-color:#4f8b66}:root[data-theme=dark] .callout.important{background:#2b2413;border-color:#c29a44}:root[data-theme=dark] .callout.warning,:root[data-theme=dark] 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