:root{color-scheme:dark;--bg-base: #0a0a0a;--bg-surface: #111111;--bg-elevated: #1a1a1a;--bg-input: #161616;--border-subtle: rgba(255, 255, 255, .07);--border-default: rgba(255, 255, 255, .12);--border-strong: rgba(255, 255, 255, .22);--text-primary: #f0f0f0;--text-secondary: #888888;--text-muted: #555555;--accent: #e8001d;--accent-dim: rgba(232, 0, 29, .15);--tag-bg: #1e1e1e;--tag-text: #999999;--space-1: 4px;--space-2: 8px;--space-3: 12px;--space-4: 16px;--space-5: 24px;--space-6: 32px;--space-7: 48px;--space-8: 64px;font-family:Inter,system-ui,sans-serif;background:var(--bg-base);color:var(--text-primary)}[data-theme=light]{color-scheme:light;--bg-base: #f5f4f0;--bg-surface: #ffffff;--bg-elevated: #f0efeb;--bg-input: #fafaf8;--border-subtle: rgba(0, 0, 0, .06);--border-default: rgba(0, 0, 0, .1);--border-strong: rgba(0, 0, 0, .18);--text-primary: #111111;--text-secondary: #666666;--text-muted: #aaaaaa;--accent: #cc0011;--accent-dim: rgba(204, 0, 17, .08);--tag-bg: #ebebeb;--tag-text: #555555}*{box-sizing:border-box}html,body,#root{min-height:100%}body{margin:0;background:radial-gradient(circle at top,rgba(232,0,29,.09),transparent 28%),var(--bg-base);color:var(--text-primary)}a{color:inherit;text-decoration:none}button,input,textarea{font:inherit}button,input,textarea,.tree-link,.entry-question-button{transition:background .12s ease,border-color .12s ease,color .12s ease,filter .12s ease}button:focus-visible,input:focus-visible,textarea:focus-visible,.tree-link:focus-visible,.entry-question-button:focus-visible{outline:none;box-shadow:0 0 0 2px var(--accent)}input,textarea{width:100%;padding:10px 12px;border:1px solid var(--border-default);border-radius:0;background:var(--bg-input);color:var(--text-primary)}textarea{resize:vertical;min-height:220px}.button-primary,.button-ghost,.icon-button{display:inline-flex;align-items:center;justify-content:center;min-height:32px;padding:8px 20px;border:1px solid var(--border-default);border-radius:0;cursor:pointer;text-transform:uppercase;letter-spacing:.14em;font-size:11px}.button-primary{border-color:transparent;background:var(--accent);color:#fff}.button-primary:hover{filter:brightness(1.12)}.button-ghost,.icon-button{background:transparent;color:var(--text-secondary)}.button-ghost:hover,.icon-button:hover{background:var(--bg-elevated);color:var(--text-primary)}.icon-button{width:32px;height:32px;padding:0}.button-block{width:100%}.field-label,.sidebar-header,.section-title{text-transform:uppercase;letter-spacing:.14em}.field-label{margin-bottom:8px;font-size:11px;color:var(--text-secondary)}.login-page,.entry-detail-page{min-height:100vh;display:grid;place-items:center;padding:32px 24px}.login-shell,.entry-detail-shell{width:min(100%,720px)}.wordmark,.display-title,.entry-detail-title{margin:0;font-family:Barlow Condensed,Oswald,sans-serif;text-transform:uppercase;letter-spacing:.1em}.wordmark{font-size:48px;color:var(--accent)}.login-subtitle,.path-copy,.meta-copy,.entry-meta,.top-nav-center{color:var(--text-secondary)}.login-form,.editor-panel{display:grid;gap:12px;margin-top:24px}.error-strip,.empty-state{margin-top:16px;border:1px solid var(--accent);padding:12px 16px;color:var(--text-primary)}.app-shell{min-height:100vh}.top-nav{position:fixed;inset:0 0 auto 0;height:52px;display:grid;grid-template-columns:220px 1fr auto;align-items:center;padding:0 16px;border-bottom:1px solid var(--border-subtle);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background:color-mix(in srgb,var(--bg-base) 85%,transparent);z-index:50}.top-nav-left,.top-nav-right,.card-header-row,.section-title-row,.entry-question-row,.form-actions,.entry-detail-nav{display:flex;align-items:center;gap:12px}.top-nav-center{font-size:13px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.brand-link{font-family:Barlow Condensed,Oswald,sans-serif;font-size:24px;letter-spacing:.08em}.mode-toggle{display:flex;overflow:hidden;border:1px solid var(--border-default)}.mode-toggle button{border:0;background:transparent;color:var(--text-secondary);padding:6px 14px;text-transform:uppercase;letter-spacing:.14em;cursor:pointer}.mode-toggle button.active{background:var(--accent);color:#fff}.sidebar{position:fixed;top:52px;left:0;bottom:0;width:220px;border-right:1px solid var(--border-subtle);background:var(--bg-surface);display:flex;flex-direction:column;z-index:40}.sidebar-body{flex:1;overflow:auto;padding:16px 0}.sidebar-header,.sidebar-footer{padding:16px}.app-main{padding-top:52px;padding-left:220px}.content-wrap{width:min(100%,880px);margin:0 auto;padding:32px 24px 64px}.display-title,.display-title-input{width:100%;border:0;background:transparent;padding:0;font-size:32px;font-family:Barlow Condensed,Oswald,sans-serif;text-transform:uppercase;letter-spacing:.1em;color:var(--text-primary)}.read-only-display{pointer-events:none}.card-header-row,.section-block{margin-bottom:32px}.card-header-row,.section-title-row{justify-content:space-between}.section-block{padding-top:24px;border-top:1px solid var(--border-subtle)}.section-title{margin:0;font-family:Barlow Condensed,Oswald,sans-serif;font-size:18px;letter-spacing:.08em}.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px}.subject-card{border:1px solid var(--border-default);background:var(--bg-surface)}.subject-card:hover{border-color:var(--border-strong)}.subject-card-header{display:flex;align-items:center;min-height:36px;padding:0 16px;border-left:2px solid var(--accent);background:var(--bg-elevated);font-family:Barlow Condensed,Oswald,sans-serif;text-transform:uppercase;letter-spacing:.12em}.subject-card-body{padding:16px;color:var(--text-secondary)}.entry-row{border-bottom:1px solid var(--border-subtle);padding:12px 16px}.entry-question-button{flex:1;border:0;background:transparent;padding:0;text-align:left;color:var(--text-primary);font-size:15px;font-weight:500;cursor:pointer}.entry-chevron{width:0;height:0;border-top:6px solid transparent;border-bottom:6px solid transparent;border-left:8px solid var(--text-secondary);background:transparent;padding:0;border-right:0;cursor:pointer}.entry-chevron.expanded{transform:rotate(90deg)}.entry-answer{max-height:0;overflow:hidden;transition:max-height .25s ease-out}.entry-answer.expanded{max-height:1200px;padding-top:16px}.answer-body{font-size:15px;line-height:1.8}.answer-body h1,.answer-body h2,.answer-body h3{font-family:Barlow Condensed,Oswald,sans-serif;text-transform:uppercase;letter-spacing:.08em}.answer-body code{font-family:JetBrains Mono,Fira Code,monospace;font-size:13.5px;background:var(--bg-elevated);padding:2px 6px;border-radius:4px}.answer-body pre{background:#1e1e1e!important;border:1px solid var(--border-default);border-radius:6px;padding:16px;overflow-x:auto;margin:12px 0}.answer-body pre code{background:transparent!important;color:#d4d4d4!important;padding:0!important;border-radius:0!important;font-family:JetBrains Mono,Fira Code,monospace;font-size:14px;line-height:1.6;white-space:pre;-moz-tab-size:4;tab-size:4}.answer-body blockquote{margin:0;padding-left:16px;border-left:2px solid var(--accent);color:var(--text-secondary)}.answer-body a{color:var(--accent)}.answer-body a:hover{text-decoration:underline}.editor-panel{padding:24px;border:1px solid var(--border-default);background:var(--bg-surface)}.tree-list{list-style:none;margin:0;padding:0}.tree-link{position:relative;display:block;padding:8px 12px;font-size:11px;text-transform:uppercase;letter-spacing:.14em;color:var(--text-secondary)}.tree-link.active{color:var(--accent)}.tree-link.active:before{content:"";position:absolute;left:6px;top:50%;width:4px;height:4px;border-radius:50%;background:var(--accent);transform:translateY(-50%)}.skeleton-card{min-height:112px;background:linear-gradient(90deg,var(--bg-elevated),var(--bg-surface),var(--bg-elevated));background-size:200% 100%;animation:shimmer 1.4s linear infinite}@keyframes shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}.is-hidden{opacity:0;pointer-events:none}.entry-detail-shell{display:grid;gap:24px}.entry-meta{padding-bottom:16px;border-bottom:1px solid var(--border-subtle)}.entry-detail-nav{justify-content:space-between}.sidebar-backdrop,.mobile-only{display:none}@media (max-width: 960px){.top-nav{grid-template-columns:auto 1fr auto}.app-main{padding-left:0}.sidebar{transform:translate(-100%);transition:transform .18s ease}.sidebar.open{transform:translate(0)}.sidebar-backdrop{position:fixed;top:52px;right:0;bottom:0;left:0;background:#0000007a;z-index:30}.sidebar-backdrop.open,.mobile-only{display:block}}@media (max-width: 720px){.content-wrap{padding:24px 16px 48px}.card-header-row,.top-nav-right,.section-title-row,.form-actions,.entry-detail-nav{flex-wrap:wrap}.top-nav-center{display:none}.card-grid{grid-template-columns:1fr}}.import-progress-container{margin:16px 0;padding:16px;background:var(--bg-surface);border:1px solid var(--border-default);border-radius:8px}.import-progress-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px;font-size:14px;font-weight:500;color:var(--text-primary)}.import-progress-track{width:100%;height:8px;background:var(--bg-base);border-radius:4px;overflow:hidden;position:relative}.import-progress-bar{height:100%;background:linear-gradient(90deg,var(--accent) 0%,#a855f7 100%);border-radius:4px;transition:width .2s ease-out}