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:root{--font-sans:var(--font-plex-sans), "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;--font-mono:var(--font-plex-mono), "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;--bg:#f6f5f1;--surface:#fff;--fg:#15171b;--muted:#59606b;--line:#e2dfd7;--line-strong:#cfcbc1;--panel:#fbfaf7;--ink:#13161b;--ink-fg:#f3f1ec;--ink-muted:#a9adb5;--accent:#1f6feb;--good:#15803d;--warn:#9a5b00;--bad:#b91c1c;--radius:14px;--shadow:0 1px 2px #14161b0d, 0 4px 16px #14161b0d;--wrap:1120px;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light}@media (prefers-color-scheme:dark){:root{--bg:#0f1114;--surface:#171a1f;--fg:#e9e8e4;--muted:#a0a5ae;--line:#2a2e35;--line-strong:#3a3f48;--panel:#14171b;--ink:#0a0b0d;--good:#4ade80;--warn:#f0b44c;--bad:#f87171;--shadow:none;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}}:root,.theme{--accent-strong:color-mix(in srgb, var(--accent) 82%, #000);--accent-soft:color-mix(in srgb, var(--accent) 9%, var(--surface));--accent-line:color-mix(in srgb, var(--accent) 35%, var(--surface));--accent-on-ink:color-mix(in srgb, var(--accent) 55%, #fff)}@media (prefers-color-scheme:dark){:root,.theme{--accent-strong:color-mix(in srgb, var(--accent) 70%, #fff);--accent-soft:color-mix(in srgb, var(--accent) 16%, var(--surface));--accent-line:color-mix(in srgb, var(--accent) 45%, var(--surface))}}*{box-sizing:border-box}html,body{background:var(--bg);color:var(--fg);margin:0}html{-webkit-text-size-adjust:100%}body{font:16px/1.6 var(--font-sans);-webkit-font-smoothing:antialiased;text-rendering:optimizelegibility}a{color:var(--accent-strong);text-underline-offset:3px;text-decoration-thickness:1px}a:hover{text-decoration-thickness:2px}:focus-visible{outline:3px solid var(--accent);outline-offset:2px;border-radius:4px}img,svg{max-width:100%}main{max-width:800px;margin:0 auto;padding:32px 16px 72px}main.wide{max-width:none;padding:0 0 72px}.wrap{max-width:var(--wrap);margin:0 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10px;font-size:.92rem;font-weight:500;text-decoration:none}.nav a:hover{background:var(--accent-soft);color:var(--accent-strong)}.nav a[aria-current=page]{color:var(--accent-strong)}.header-actions{align-items:center;gap:8px;display:flex}.menu{position:relative}.menu>summary{cursor:pointer;border:1px solid var(--line-strong);border-radius:10px;place-items:center;width:42px;height:42px;list-style:none;display:grid}.menu>summary::-webkit-details-marker{display:none}.menu-panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);width:min(300px,100vw - 32px);max-height:calc(100vh - 96px);padding:8px;display:grid;position:absolute;top:calc(100% + 8px);right:0;overflow-y:auto;box-shadow:0 12px 40px #00000024}.menu-panel a{color:var(--fg);border-radius:8px;padding:11px 12px;font-weight:500;text-decoration:none}.menu-panel a:hover{background:var(--accent-soft)}.menu-panel .menu-label{letter-spacing:.08em;text-transform:uppercase;color:var(--muted);padding:10px 12px 2px;font-size:.72rem;font-weight:600}.header .btn{padding:9px 14px;font-size:.9rem}@media (max-width:420px){.header .btn-label-long{display:none}}@media (min-width:900px){.nav{display:flex}.menu{display:none}}.footer{background:var(--ink);color:var(--ink-muted);margin-top:24px;font-size:.9rem}.footer .inner{max-width:var(--wrap);margin:0 auto;padding:48px 16px 28px}@media (min-width:720px){.footer .inner{padding:56px 24px 32px}}.footer a{color:var(--ink-fg);text-decoration:none}.footer a:hover{text-decoration:underline}.footer .brand{color:var(--ink-fg)}.footer-cols{grid-template-columns:1fr;gap:32px;display:grid}@media (min-width:720px){.footer-cols{grid-template-columns:1.4fr 1fr 1fr}}.footer h2{color:var(--ink-fg);letter-spacing:.08em;text-transform:uppercase;margin:0 0 12px;font-size:.78rem}.footer ul{gap:8px;margin:0;padding:0;list-style:none;display:grid}.footer .legal{border-top:1px solid 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var(--bad) 45%, transparent);background:color-mix(in srgb, var(--bad) 6%, var(--surface))}.notice{color:var(--muted);align-items:flex-start;gap:10px;margin:14px 0;font-size:.88rem;display:flex}.notice .pill{margin-top:1px}.check-list{gap:8px;margin:16px 0;padding:0;list-style:none;display:grid}.check-list li{padding-left:28px;position:relative}.check-list li:before{content:"✓";background:var(--accent-soft);border:1px solid var(--accent-line);width:20px;height:20px;color:var(--accent-strong);border-radius:50%;place-items:center;font-size:.72rem;font-weight:700;line-height:1;display:grid;position:absolute;top:.15em;left:0}input,select,textarea,button{font:inherit}label.field{margin:14px 0;font-size:.9rem;font-weight:600;display:block}label.field input,label.field select,label.field textarea{width:100%;margin-top:6px;display:block}input:not([type=checkbox]):not([type=radio]),select,textarea{border:1px solid 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var(--line-strong);cursor:pointer;background:var(--surface);border-radius:12px;align-items:flex-start;gap:12px;margin:10px 0;padding:14px;transition:border-color .12s,background .12s;display:flex;position:relative}.option:hover{border-color:var(--accent-line);background:var(--accent-soft)}.option input{opacity:0;pointer-events:none;position:absolute}.option .key{border:1px solid var(--line-strong);background:var(--panel);width:28px;height:28px;color:var(--muted);border-radius:8px;flex:none;place-items:center;font-size:.85rem;font-weight:600;display:grid}.option.selected{border-color:var(--accent);background:var(--accent-soft);box-shadow:0 0 0 1px var(--accent) inset}.option.selected .key{background:var(--accent);border-color:var(--accent);color:#fff}.option:has(input:focus-visible){outline:3px solid var(--accent);outline-offset:2px}.quiz-nav{justify-content:space-between;gap:12px;margin-top:20px;display:flex}.bar{background:color-mix(in srgb, var(--fg) 8%, 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solid var(--line);vertical-align:top;padding:11px 14px}table.facts tr:first-child td{border-top:0}table.facts td:first-child{color:var(--muted);width:36%;font-weight:500}@media (max-width:520px){table.facts td{padding:2px 14px;display:block;width:auto!important}table.facts td:first-child{padding-top:12px;font-size:.8rem}table.facts td:last-child{padding-bottom:12px}table.facts tr+tr td:first-child{border-top:1px solid var(--line)}table.facts tr td+td{border-top:0}}.stats{background:var(--line);border:1px solid var(--line);border-radius:var(--radius);grid-template-columns:repeat(auto-fit,minmax(min(100%,200px),1fr));gap:1px;margin:20px 0;display:grid;overflow:hidden}.stats>div{background:var(--surface);padding:14px 16px}.stats b{letter-spacing:-.01em;font-size:1.25rem;display:block}.stats span{color:var(--muted);font-size:.82rem}.prose{max-width:70ch;margin:16px 0}.prose h2{margin-top:1.8em;padding-top:.2em}.prose li{margin:6px 0}.prose li::marker{color:var(--accent)}.prose ul,.prose ol{padding-left:1.3em}.prose table{border-collapse:collapse;width:100%;margin:16px 0;font-size:.92rem;display:block;overflow-x:auto}.prose th,.prose td{border-bottom:1px solid var(--line);text-align:left;vertical-align:top;padding:8px 10px}.prose th{background:var(--panel);font-weight:600}.prose .note{border-left:3px solid var(--accent);color:var(--muted);padding:4px 12px}.prose blockquote{border-left:3px solid var(--accent);color:var(--muted);margin:16px 0;padding:4px 14px}.cta-card{border:1px solid var(--accent-line);background:var(--accent-soft);border-radius:var(--radius);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px;margin:20px 0;padding:18px 20px;display:flex}.cta-card p{max-width:46ch;margin:0}.cta-card strong{font-size:1.05rem;display:block}.hero{background:var(--ink);color:var(--ink-fg);position:relative;overflow:hidden}.hero:before{content:"";pointer-events:none;background-image:linear-gradient(#ffffff0b 1px,#0000 1px),linear-gradient(90deg,#ffffff0b 1px,#0000 1px);background-size:28px 28px;position:absolute;inset:0;-webkit-mask-image:linear-gradient(#000 30%,#0000);mask-image:linear-gradient(#000 30%,#0000)}.hero:after{content:"";background:radial-gradient(closest-side, color-mix(in srgb, var(--accent) 35%, transparent), transparent);opacity:.55;pointer-events:none;width:60%;height:140%;position:absolute;top:-30%;right:-10%}.hero .wrap{z-index:1;gap:40px;padding-top:56px;padding-bottom:64px;display:grid;position:relative}@media (min-width:960px){.hero .wrap{grid-template-columns:1.25fr .85fr;align-items:center;padding-top:80px;padding-bottom:88px}}.hero h1{color:#fff;letter-spacing:-.025em;margin:.2em 0 .4em;font-size:clamp(2rem,1.4rem + 2.2vw,2.9rem);line-height:1.08}.hero .eyebrow{color:var(--accent-on-ink)}.hero .lead{color:var(--ink-muted)}.hero .btn.secondary{color:var(--ink-fg);background:0 0;border-color:#ffffff40}.hero .btn.secondary:hover{color:#fff;border-color:#fff9}.hero .card{color:var(--fg)}.hero-points{color:var(--ink-muted);flex-wrap:wrap;gap:8px 20px;margin:24px 0 0;padding:0;font-size:.88rem;list-style:none;display:flex}.hero-points li:before{content:"✓";color:var(--accent-on-ink);margin-right:6px;font-weight:700}.sample{padding:22px}.sample-head{justify-content:space-between;align-items:baseline;gap:12px;display:flex}.sample-tag{letter-spacing:.06em;text-transform:uppercase;color:var(--muted);font-size:.72rem;font-weight:600}.section{padding:64px 0 8px}.section-head{max-width:62ch;margin-bottom:28px}.section-head h2{margin:0 0 8px;font-size:clamp(1.45rem,1.1rem + 1.2vw,2rem)}.section-head p{color:var(--muted);margin:0}.ladder{counter-reset:rung;grid-template-columns:1fr;gap:16px;display:grid}@media (min-width:820px){.ladder{grid-template-columns:repeat(var(--rungs,3), 1fr);align-items:end}.ladder>.rung:nth-child(2){margin-top:0}}.rung{border-top:4px solid var(--accent);flex-direction:column;gap:4px;display:flex;position:relative}@media (min-width:820px){.ladder.step>.rung:first-child{min-height:300px}.ladder.step>.rung:nth-child(2){min-height:340px}.ladder.step>.rung:nth-child(3){min-height:380px}}.rung .level{letter-spacing:.08em;text-transform:uppercase;color:var(--accent-strong);font-size:.75rem;font-weight:600}.rung h3{margin:4px 0 2px;font-size:1.25rem}.rung .meta{flex-wrap:wrap;gap:6px;margin:10px 0 14px;display:flex}.rung .meta span{background:var(--panel);border:1px solid var(--line);color:var(--muted);border-radius:999px;padding:3px 9px;font-size:.8rem}.rung .actions{flex-wrap:wrap;align-items:center;gap:14px;margin-top:auto;padding-top:8px;display:flex}.trust{background:var(--line);border:1px solid var(--line);border-radius:var(--radius);grid-template-columns:repeat(auto-fit,minmax(min(100%,220px),1fr));gap:1px;display:grid;overflow:hidden}.trust>div{background:var(--surface);padding:18px 20px}.trust b{margin-bottom:4px;display:block}.trust span{color:var(--muted);font-size:.88rem}.two-col{gap:40px;display:grid}@media (min-width:960px){.two-col{grid-template-columns:minmax(0,1fr) 320px}.two-col aside{align-self:start;position:sticky;top:84px}}.resource-group+.resource-group{margin-top:28px}.resource-group h3{letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin:0 0 12px;font-size:.8rem}.link-cards{grid-template-columns:repeat(auto-fit,minmax(min(100%,260px),1fr));gap:12px;display:grid}.link-card{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);color:var(--fg);flex-direction:column;gap:6px;padding:18px 20px;text-decoration:none;transition:border-color .12s,transform .12s;display:flex}.link-card:hover{border-color:var(--accent);transform:translateY(-1px)}.link-card .kind{letter-spacing:.08em;text-transform:uppercase;color:var(--accent-strong);font-size:.72rem;font-weight:600}.link-card b{font-weight:600;line-height:1.35}.landing{gap:32px;display:grid}@media (min-width:960px){.landing{grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);align-items:start;gap:48px}}.preview-banner{color:#5c4400;text-align:center;background:#fff4d6;border-bottom:1px solid #f0d78c;padding:6px 12px}