:root,[data-theme=light]{--navy: #003087;--navy-deep: #001a4d;--navy-soft: rgba(0, 48, 135, .08);--teal: #00a5b5;--teal-deep: #007a87;--teal-bright: #12c4d4;--teal-soft: #e6f8fa;--ok: #0d7a5f;--ok-soft: #e8f8f3;--ok-border: rgba(13, 122, 95, .28);--warn: #b54708;--warn-soft: #fffaeb;--ink: #1f1f1f;--ink-secondary: #444746;--muted: #5f6368;--line: #e3e3e3;--line-strong: #c7c7c7;--wash: #f8f9fa;--wash-2: #f1f3f4;--panel: #ffffff;--chrome: #ffffff;--stage: #f0f2f5;--code-bg: #0f172a;--code-ink: #e2e8f0;--shadow-sm: 0 1px 2px rgba(60, 64, 67, .12);--shadow: 0 1px 3px rgba(60, 64, 67, .15), 0 4px 8px rgba(60, 64, 67, .08);--shadow-lg: 0 8px 28px rgba(60, 64, 67, .16);--focus: 0 0 0 2px #fff, 0 0 0 4px var(--teal);--radius: 10px;--radius-sm: 6px;--radius-pill: 999px;--font: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;--mono: "JetBrains Mono", ui-monospace, "Cascadia Code", Consolas, monospace;--appbar-h: 56px;--subbar-h: 52px;--statusbar-h: 28px;--rail-w: 260px;--outline-w: 220px}[data-theme=dark]{--ink: #e8eaed;--ink-secondary: #bdc1c6;--muted: #9aa0a6;--line: #3c4043;--line-strong: #5f6368;--wash: #292a2d;--wash-2: #35363a;--panel: #202124;--chrome: #292a2d;--stage: #171717;--navy-soft: rgba(138, 180, 248, .12);--teal-soft: rgba(0, 165, 181, .14);--ok: #34d399;--ok-soft: rgba(13, 122, 95, .22);--focus: 0 0 0 2px #202124, 0 0 0 4px var(--teal);--code-bg: #0b1220}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;transition-duration:.01ms!important}}*,*:before,*:after{box-sizing:border-box}body{margin:0;min-height:100vh;font-family:var(--font);font-size:var(--text-base, .875rem);line-height:1.45;color:var(--ink);background:var(--stage);-webkit-font-smoothing:antialiased;overflow:hidden}button,input,a{font:inherit}button{cursor:pointer;border:none;background:none;color:inherit}a{color:inherit;text-decoration:none}:focus-visible{outline:none;box-shadow:var(--focus)}.mono{font-family:var(--mono);font-size:.85em}.muted{color:var(--muted)}.skip-link{position:absolute;left:-9999px;z-index:1000;padding:.55rem .9rem;background:var(--navy);color:#fff;border-radius:var(--radius-sm);font-weight:600}.skip-link:focus{left:.75rem;top:.75rem}.guest-claim-banner{margin:0;padding:6px 14px;font-size:.72rem;font-weight:600;letter-spacing:.01em;color:var(--ok);background:var(--ok-soft);border-bottom:1px solid var(--ok-border)}.icon-btn{width:36px;height:36px;display:grid;place-items:center;border-radius:var(--radius-sm);color:var(--ink-secondary)}.icon-btn:hover{background:var(--wash-2)}.icon-btn--sm{width:28px;height:28px}.inline-kbd{font-family:var(--mono);font-size:.68rem;padding:1px 5px;border-radius:4px;border:1px solid var(--line);background:var(--wash);color:var(--muted);margin-left:4px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:8px 14px;border-radius:var(--radius-sm);font-weight:600;font-size:.8rem;border:1px solid transparent;white-space:nowrap}.btn-primary{background:var(--navy);color:#fff}.btn-primary:hover{background:var(--navy-deep)}.btn-secondary{background:var(--panel);border-color:var(--line)}.btn-secondary:hover{border-color:var(--line-strong);background:var(--wash)}.kbd{display:inline-flex;padding:0 5px;border-radius:4px;border:1px solid var(--line);background:var(--wash);font-family:var(--mono);font-size:.68rem;color:var(--muted)}.subbar{flex-wrap:wrap;gap:10px 12px;overflow-x:auto;overflow-y:hidden}.search-field{display:flex;align-items:center;gap:8px;min-width:200px;max-width:320px;flex:1 1 220px;height:36px;padding:0 10px;background:var(--wash);border:1px solid var(--line);border-radius:var(--radius-sm);color:var(--muted)}.search-field:focus-within{border-color:var(--teal);box-shadow:0 0 0 3px var(--teal-soft);color:var(--ink)}.search-field input{flex:1;min-width:0;border:none;background:transparent;color:var(--ink);outline:none}.filter-chips{display:flex;gap:6px;flex-shrink:0}.chip{display:inline-flex;align-items:center;gap:6px;padding:5px 10px;border-radius:var(--radius-pill);border:1px solid var(--line);background:var(--panel);font-size:.72rem;font-weight:600;color:var(--ink-secondary);white-space:nowrap}.chip.active{background:var(--navy-soft);border-color:transparent;color:var(--navy)}[data-theme=dark] .chip.active{color:#8ab4f8}.chip .count{font-family:var(--mono);font-size:.68rem;opacity:.75}.view-tabs{margin-left:auto;display:inline-flex;flex-wrap:wrap;padding:2px;background:var(--wash-2);border:1px solid var(--line);border-radius:var(--radius-sm);flex:0 1 auto;gap:0}.seg-btn{padding:5px 10px;border-radius:4px;font-size:.72rem;font-weight:600;color:var(--muted)}.seg-btn.active{background:var(--panel);color:var(--ink);box-shadow:var(--shadow-sm)}.workspace{display:grid;grid-template-columns:var(--rail-w) minmax(0,1fr) var(--outline-w);min-height:0;overflow:hidden;background:var(--stage);align-items:stretch}.rail{background:var(--panel);border-right:1px solid var(--line);overflow-x:hidden;overflow-y:auto;padding:0;min-height:0;min-width:0;display:flex;flex-direction:column}.rail-head{padding:14px 14px 8px;flex-shrink:0}.rail-kicker{margin:0 0 4px;font-size:.68rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}.rail-lead{margin:0;font-size:.85rem;font-weight:600;color:var(--ink-secondary);line-height:1.35}.claim-safe{padding:10px 12px;margin:0 12px 12px;border-radius:var(--radius-sm);border:1px solid var(--ok-border);background:var(--ok-soft);font-size:.75rem;line-height:1.45;flex-shrink:0}.claim-safe strong{display:block;margin-bottom:4px;color:var(--ok);font-size:.8rem}.claim-safe p{margin:0;color:var(--ink-secondary)}.template-nav{display:flex;flex-direction:column;gap:12px;padding:0 10px 16px;flex:1 1 auto;min-height:0;content-visibility:auto;contain:content}.main .content{content-visibility:auto;contain:layout style}.nav-cat-title{margin:0 0 6px;font-size:.68rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}.nav-item{display:block;width:100%;text-align:left;padding:9px 10px;border-radius:var(--radius-sm);border:1px solid transparent;margin-bottom:3px}.nav-item:hover{background:var(--wash)}.nav-item.active{background:var(--teal-soft);border-color:#00a5b559}.nav-item strong{display:block;font-size:.84rem;font-weight:650}.nav-item span{display:block;margin-top:2px;font-size:.72rem;color:var(--muted);line-height:1.35}.main{overflow-x:hidden;overflow-y:auto;min-height:0;min-width:0;scroll-behavior:smooth;background:var(--stage);display:flex;flex-direction:column;align-items:stretch}.stage{width:100%;max-width:920px;margin:0 auto;padding:20px 28px 48px;box-sizing:border-box}.content{width:100%;max-width:820px;margin:0 auto}.ux-breadcrumb{font-size:.75rem;color:var(--muted);display:flex;flex-wrap:wrap;gap:4px 6px;align-items:center;max-width:820px;margin:0 auto 12px}.outline{background:var(--panel);border-left:1px solid var(--line);overflow-x:hidden;overflow-y:auto;min-height:0;min-width:0;padding:14px 12px 20px}.outline-list a,.outline-list button{display:block;width:100%;text-align:left;padding:6px 8px;border-radius:6px;font-size:.75rem;color:var(--ink-secondary);line-height:1.35;border:none;background:transparent;cursor:pointer}.outline-list a:hover,.outline-list button:hover{background:var(--wash);color:var(--ink)}.outline-list a.active,.outline-list button.active{background:var(--navy-soft);color:var(--navy);font-weight:600}.hero-card{padding:22px 24px;margin:0 0 18px;background:var(--panel);border:1px solid var(--line);border-radius:calc(var(--radius) + 2px);box-shadow:var(--shadow-sm);background-image:radial-gradient(ellipse 70% 100% at 100% 0%,var(--teal-soft),transparent 55%)}.eyebrow{margin:0 0 6px;font-size:.68rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--teal-deep)}[data-theme=dark] .eyebrow{color:var(--teal-bright)}.hero-card h1{margin:0 0 8px;font-size:1.65rem;font-weight:750;letter-spacing:-.03em;line-height:1.15}.hero-card .lede{margin:0 0 14px;color:var(--ink-secondary);font-size:.95rem;line-height:1.55;max-width:62ch}.meta-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:12px}.badge{display:inline-flex;padding:3px 9px;border-radius:var(--radius-pill);font-size:.68rem;font-weight:700;background:var(--wash-2);color:var(--ink-secondary)}.badge-cat{background:var(--navy-soft);color:var(--navy)}[data-theme=dark] .badge-cat{color:#8ab4f8}.badge-audience{background:var(--teal-soft);color:var(--teal-deep)}[data-theme=dark] .badge-audience{color:var(--teal-bright)}.hero-actions{display:flex;flex-wrap:wrap;gap:8px}.panel{margin-bottom:16px;background:var(--panel);border:1px solid var(--line);border-radius:calc(var(--radius) + 2px);box-shadow:var(--shadow-sm);overflow:hidden}.panel-head{padding:12px 16px;border-bottom:1px solid var(--line);background:linear-gradient(180deg,var(--wash),var(--panel))}.panel-head h2{margin:0;font-size:1rem;font-weight:700;letter-spacing:-.015em}.panel-head p{margin:4px 0 0;font-size:.8rem;color:var(--muted)}.panel-body{padding:14px 16px 16px}.panel-body p{margin:0 0 10px;color:var(--ink-secondary);line-height:1.55}.panel-body ul,.panel-body ol{margin:0 0 10px;padding-left:1.2rem;color:var(--ink-secondary);line-height:1.5}.panel-body li{margin-bottom:4px}.fact-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.fact{padding:10px 12px;background:var(--wash);border:1px solid var(--line);border-radius:var(--radius-sm)}.fact .label{display:block;font-size:.68rem;font-weight:700;text-transform:uppercase;letter-spacing:.04em;color:var(--muted);margin-bottom:4px}.fact .value{font-size:.86rem;color:var(--ink);line-height:1.4}.toc-section{padding:14px 0;border-bottom:1px solid var(--line)}.toc-section:last-child{border-bottom:none;padding-bottom:0}.toc-section:first-child{padding-top:0}.toc-section h3{margin:0 0 6px;font-size:.95rem;font-weight:700;letter-spacing:-.01em}.toc-section .purpose{margin:0 0 10px;font-size:.86rem;color:var(--muted);font-style:italic}.two-col{display:grid;grid-template-columns:1fr 1fr;gap:12px}.mini-block h4{margin:0 0 6px;font-size:.72rem;font-weight:700;letter-spacing:.05em;text-transform:uppercase;color:var(--muted)}.mini-block ul{margin:0;padding-left:1.1rem;font-size:.82rem}.placeholder{margin-top:10px;padding:10px 12px;background:var(--wash);border-left:3px solid var(--teal);border-radius:0 var(--radius-sm) var(--radius-sm) 0;font-family:var(--mono);font-size:.78rem;color:var(--ink-secondary);line-height:1.45}.check-list{list-style:none;margin:0;padding:0}.check-list li{display:flex;gap:10px;align-items:flex-start;padding:8px 0;border-bottom:1px solid var(--line);font-size:.88rem;color:var(--ink-secondary)}.check-list li:last-child{border-bottom:none}.check-box{width:18px;height:18px;border:1.5px solid var(--line-strong);border-radius:4px;flex-shrink:0;margin-top:1px;background:var(--panel);cursor:pointer}.check-box[aria-checked=true]{background:var(--ok);border-color:var(--ok);box-shadow:inset 0 0 0 2px var(--panel)}.template-toolbar{display:flex;justify-content:space-between;align-items:center;gap:8px;margin-bottom:10px}.template-pre{margin:0;padding:14px 16px;background:var(--code-bg);color:var(--code-ink);border-radius:var(--radius);overflow-x:auto;font-family:var(--mono);font-size:.78rem;line-height:1.5;white-space:pre-wrap;word-break:break-word;max-height:min(70vh,720px);overflow-y:auto}.research-item{padding:10px 0;border-bottom:1px solid var(--line)}.research-item:last-child{border-bottom:none}.research-item strong{display:block;font-size:.84rem;margin-bottom:4px}.research-item p{margin:0;font-size:.82rem}.related-row{display:flex;flex-wrap:wrap;gap:8px}.related-link{padding:6px 12px;border-radius:var(--radius-pill);border:1px solid var(--line);background:var(--wash);font-size:.78rem;font-weight:600}.related-link:hover{border-color:var(--teal);background:var(--teal-soft)}.figure-pack-list{display:flex;flex-direction:column;gap:8px;margin-top:4px}.figure-pack-item{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;padding:10px 12px;border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--wash)}.figure-pack-item code{font-size:.8rem;font-weight:600}.figure-pack-item .btn{flex-shrink:0}.empty{padding:48px 24px;text-align:center;color:var(--muted)}.outline{background:var(--chrome);border-left:1px solid var(--line);overflow-y:auto;padding:14px 12px;min-height:0}.outline-label{margin:0 0 10px;font-size:.68rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}.outline-list{display:flex;flex-direction:column;gap:2px}.outline-btn{display:block;width:100%;text-align:left;padding:6px 8px;border-radius:var(--radius-sm);font-size:.75rem;color:var(--ink-secondary);line-height:1.3}.outline-btn:hover{background:var(--wash-2);color:var(--ink)}.statusbar{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:0 12px;background:var(--chrome);border-top:1px solid var(--line);font-size:.72rem;color:var(--muted)}.statusbar-left,.statusbar-right,.statusbar-center{display:flex;align-items:center;gap:8px;min-width:0}.status-chip{display:inline-flex;padding:2px 8px;border-radius:var(--radius-pill);font-weight:600;background:var(--wash-2);border:1px solid var(--line)}.status-chip.ok{background:var(--ok-soft);border-color:var(--ok-border);color:var(--ok)}.status-sep{opacity:.5}.toast{position:fixed;bottom:40px;left:50%;transform:translate(-50%);z-index:100;padding:10px 16px;background:var(--navy);color:#fff;border-radius:var(--radius-pill);font-size:.84rem;font-weight:600;box-shadow:var(--shadow-lg)}.dialog{border:none;padding:0;background:transparent;max-width:440px;width:calc(100% - 2rem)}.dialog::backdrop{background:#0f172a73}.dialog-card{background:var(--panel);border:1px solid var(--line);border-radius:calc(var(--radius) + 2px);box-shadow:var(--shadow-lg);overflow:hidden}.dialog-head{display:flex;align-items:center;justify-content:space-between;padding:14px 16px 10px;border-bottom:1px solid var(--line)}.dialog-head h2{margin:0;font-size:1.1rem}.dialog-body{padding:14px 16px;color:var(--ink-secondary);line-height:1.5}.dialog-foot{padding:10px 16px 14px;display:flex;justify-content:flex-end}.shortcut-list{margin:12px 0 0;display:flex;flex-direction:column;gap:8px}.shortcut-list>div{display:flex;gap:12px;align-items:center}.shortcut-list dt{min-width:5rem}.shortcut-list dd{margin:0;font-size:.86rem}@media(max-width:1100px){.workspace{grid-template-columns:minmax(220px,var(--rail-w)) minmax(0,1fr)}.outline{display:none}.stage{max-width:860px;padding:16px 20px 40px}}@media(max-width:800px){.workspace{grid-template-columns:1fr}.rail{display:none}.primary-nav{display:flex}.two-col,.fact-grid{grid-template-columns:1fr}.stage{padding:14px 14px 36px}.subbar{padding:8px 12px}}