:root{--bg: #0a1628;--surface: #0f2038;--surface-raised: #15304f;--text: #e8f1fa;--text-muted: #7fa3c4;--accent: #00e5ff;--accent-support: #ff6b4a;--danger: #ff5470;--radius-sm: 4px;--radius: 8px;--space-2: 8px;--space-3: 16px;--space-4: 24px;--space-6: 48px;--font-display: "Space Grotesk", system-ui, -apple-system, sans-serif;--font-ui: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, monospace}*{box-sizing:border-box}html,body{margin:0;padding:0;min-height:100%}body{background:var(--bg);color:var(--text);font-family:var(--font-ui);line-height:1.5}h1{font-family:var(--font-display);letter-spacing:.02em}.wordmark{display:flex;align-items:center;gap:var(--space-2)}.wordmark-glyph{width:34px;height:34px;flex-shrink:0;color:var(--accent)}.wordmark h1{margin:0;font-size:clamp(1.75rem,1.4rem + 1.5vw,2.5rem);letter-spacing:.06em;text-transform:uppercase}.wordmark-accent{color:var(--accent)}.tagline{max-width:60ch;color:var(--text-muted)}.grid-bg{position:fixed;top:0;right:0;bottom:0;left:0;z-index:-1;background-color:var(--bg);background-image:repeating-linear-gradient(0deg,rgba(0,229,255,.07) 0 1px,transparent 1px 48px),repeating-linear-gradient(90deg,rgba(0,229,255,.07) 0 1px,transparent 1px 48px);background-size:48px 48px;animation:grid-drift 90s linear infinite}@keyframes grid-drift{0%{background-position:0 0}to{background-position:480px 480px}}@media (max-width: 480px){.grid-bg{background-size:32px 32px}@keyframes grid-drift{to{background-position:320px 320px}}}@media (prefers-reduced-motion: reduce){.grid-bg{animation:none}}#app{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:100vh;padding:var(--space-4);text-align:center;gap:var(--space-4)}.controls{display:flex;align-items:center;gap:var(--space-3)}.mute-toggle{font-size:1.25rem;line-height:1;width:44px;height:44px;border-radius:var(--radius-sm);border:1px solid rgba(0,229,255,.3);background:var(--surface);color:var(--text);cursor:pointer;transition:transform .15s ease-out,box-shadow .15s ease-out,background .15s ease-out}.mute-toggle:hover{background:var(--surface-raised);box-shadow:0 0 16px #00e5ff40}.mute-toggle:active{transform:translateY(1px)}.mute-toggle:focus-visible{outline:3px solid var(--accent);outline-offset:3px}.measure-button{font:inherit;font-weight:600;font-size:1.125rem;padding:var(--space-3) var(--space-6);border-radius:var(--radius-sm);border:1px solid var(--accent);background:var(--accent);color:#04222b;cursor:pointer;transition:transform .15s ease-out,box-shadow .15s ease-out}.measure-button:hover{transform:translateY(-1px);box-shadow:0 0 16px #00e5ff40}.measure-button:active{transform:translateY(0)}.measure-button:focus-visible{outline:3px solid var(--accent);outline-offset:3px}.measure-button:disabled{opacity:.6;cursor:not-allowed}#results{width:100%;max-width:760px}.ladder-bars{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:var(--space-4)}.ladder-row{display:grid;grid-template-columns:100px 1fr 90px;align-items:center;gap:var(--space-3);text-align:left}.ladder-label{font-weight:600}.ladder-track{position:relative;display:block;height:40px;border-radius:var(--radius);background:var(--surface);border:1px solid rgba(0,229,255,.2);overflow:hidden}@media (max-width: 480px){.ladder-row{grid-template-columns:1fr auto;grid-template-areas:"label value" "track track";row-gap:var(--space-2)}.ladder-label{grid-area:label}.ladder-value-cell{grid-area:value}.ladder-track{grid-area:track}}.ladder-fill{display:block;height:100%;background:var(--accent);border-radius:var(--radius-sm);transition:width .6s ease-out}.ladder-marker{position:absolute;top:0;bottom:0;width:2px;background:var(--accent-support);opacity:.7}.ladder-value-cell{display:flex;flex-direction:column;align-items:flex-end;line-height:1.2}.ladder-delta{font-size:.75rem;font-variant-numeric:tabular-nums}.ladder-delta--up{color:var(--danger)}.ladder-delta--down{color:var(--success)}.ladder-value{font-variant-numeric:tabular-nums;color:var(--text-muted);text-align:right}.ladder-row--error{grid-template-columns:90px 1fr}.ladder-error{color:var(--danger);font-size:.9rem;text-align:left}.ladder-narrative{margin-top:var(--space-4);font-family:var(--font-display);font-size:1.25rem;font-weight:600;color:var(--accent-support)}.copy-row{margin-top:var(--space-3);display:flex;align-items:center;justify-content:center;gap:var(--space-3)}.copy-button{font:inherit;font-size:.9rem;min-height:44px;padding:var(--space-2) var(--space-3);border-radius:var(--radius-sm);border:1px solid rgba(0,229,255,.4);background:transparent;color:var(--accent);cursor:pointer;transition:background .15s ease-out,box-shadow .15s ease-out}.copy-button:hover{background:var(--surface-raised);box-shadow:0 0 12px #00e5ff33}.copy-button:active{transform:translateY(1px)}.copy-button:focus-visible{outline:3px solid var(--accent);outline-offset:3px}.copy-status{font-size:.85rem;color:var(--text-muted);min-height:1.2em}@media (prefers-reduced-motion: reduce){.ladder-fill{transition:none}}.gh-link{position:fixed;top:var(--space-3);right:var(--space-3);z-index:1;display:inline-flex;align-items:center;gap:var(--space-2);min-height:44px;padding:var(--space-2) var(--space-3);border-radius:var(--radius-sm);border:1px solid rgba(0,229,255,.3);background:#0f2038cc;color:var(--text-muted);font-size:.85rem;text-decoration:none;transition:color .15s ease-out,border-color .15s ease-out,box-shadow .15s ease-out}.gh-link:hover{color:var(--accent);border-color:var(--accent);box-shadow:0 0 16px #00e5ff40}.gh-link:focus-visible{outline:3px solid var(--accent);outline-offset:3px}@media (max-width: 480px){.gh-link span{display:none}}.about{max-width:70ch;margin:0 auto;padding:var(--space-6) var(--space-4);border-top:1px solid rgba(0,229,255,.15)}.about h2{font-family:var(--font-display);font-size:1.5rem;letter-spacing:.02em;margin:0 0 var(--space-3)}.about p{color:var(--text-muted)}.faq{margin-top:var(--space-4);display:flex;flex-direction:column;gap:var(--space-2)}.faq details{border:1px solid rgba(0,229,255,.2);border-radius:var(--radius);background:var(--surface);overflow:hidden}.faq summary{cursor:pointer;list-style:none;padding:var(--space-3);min-height:44px;display:flex;align-items:center;gap:var(--space-2);font-weight:600;color:var(--text);transition:background .15s ease-out}.faq summary::-webkit-details-marker{display:none}.faq summary:before{content:"+";color:var(--accent);font-weight:700;width:1ch;flex-shrink:0}.faq details[open] summary:before{content:"−"}.faq summary:hover{background:var(--surface-raised)}.faq summary:focus-visible{outline:3px solid var(--accent);outline-offset:-3px}.faq details>p{margin:0;padding:0 var(--space-3) var(--space-3);color:var(--text-muted)}.site-footer{max-width:70ch;margin:0 auto;padding:var(--space-4);text-align:center;color:var(--text-muted);font-size:.85rem;display:flex;flex-wrap:wrap;gap:var(--space-2);align-items:center;justify-content:center}.site-footer a{color:var(--text-muted);text-decoration:none;transition:color .15s ease-out}.site-footer a:hover{color:var(--accent)}.site-footer a:focus-visible{outline:3px solid var(--accent);outline-offset:3px;border-radius:2px}