:root{--c-bg: #0f1222;--c-surface: #181c33;--c-border: #2c3260;--c-text: #eef0ff;--c-muted: #9aa0c7;--c-brand: #f5c451;--c-good: #4cd395;--c-bad: #ff6b7a;--c-on-brand: #1b1600;--c-surface-2: color-mix(in srgb, var(--c-surface) 88%, var(--c-text))}*{box-sizing:border-box}html,body{margin:0;background:var(--c-bg);color:var(--c-text);font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;font-size:15px;-webkit-tap-highlight-color:transparent}a{color:inherit;text-decoration:none}.app{min-height:100vh;max-width:520px;margin:0 auto;display:flex;flex-direction:column;padding-bottom:env(safe-area-inset-bottom)}.app--tabs{padding-bottom:calc(62px + env(safe-area-inset-bottom))}.demo-strip{padding:6px 12px;background:#b45309;color:#fff;font-size:12px;font-weight:700;text-align:center}.app-bar{position:sticky;top:0;z-index:5;display:flex;justify-content:space-between;align-items:center;padding:calc(12px + env(safe-area-inset-top)) 16px 12px;background:color-mix(in srgb,var(--c-bg) 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var(--c-border)}.btn--small{width:auto;margin:0;padding:9px 14px;font-size:13px;flex-shrink:0}.seg{display:flex;gap:6px;padding:4px;border-radius:12px;background:var(--c-surface);border:1px solid var(--c-border)}.seg__btn{flex:1;padding:9px 6px;border:0;border-radius:9px;background:transparent;color:var(--c-muted);font-weight:600;font-size:13px;cursor:pointer}.seg__btn--on{background:var(--c-surface-2);color:var(--c-text)}.seg__n{display:inline-block;margin-left:4px;padding:0 6px;border-radius:99px;background:var(--c-brand);color:var(--c-on-brand);font-size:11px}.bar{height:8px;border-radius:99px;background:var(--c-surface-2);overflow:hidden}.bar__fill{height:100%;background:linear-gradient(90deg,#7b6cff,var(--c-brand));border-radius:99px;transition:width .5s ease}.bar__fill--done{background:var(--c-good)}.tier-card{--tier: var(--c-brand);border-radius:14px;padding:18px;background:linear-gradient(135deg,color-mix(in srgb,var(--tier) 30%,var(--c-bg)),var(--c-surface-2));border:1px solid 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