:root{--bg: #F2F2F7;--surface: #FFFFFF;--text: #1C1C1E;--text-soft: rgba(60, 60, 67, .78);--text-faint: rgba(60, 60, 67, .78);--brand-sep: rgba(60, 60, 67, .3);--border: rgba(60, 60, 67, .12);--accent: #30B0C7;--negative: #FF3B30;--accent-ink: #1E6E7E;--accent-soft: rgba(48, 176, 199, .14);--accent-text: #1C1C1E;--green: #34C759;--topbar-bg: rgba(242, 242, 247, .72);--warn-bg: rgba(255, 159, 10, .12);--warn-border: rgba(255, 159, 10, .35);--warn-text: #8C580A;--pill-bg: rgba(52, 199, 89, .14);--radius: 22px;--display: "Bricolage Grotesque", -apple-system, BlinkMacSystemFont, "SF Pro Display", sans-serif;--shadow: 0 1px 2px rgba(0, 0, 0, .04), 0 8px 24px rgba(0, 0, 0, .06);font-family:-apple-system,BlinkMacSystemFont,SF Pro Text,Segoe UI,Roboto,sans-serif}:root[data-theme=dark]{--bg: #000000;--surface: #1C1C1E;--text: #F2F2F7;--text-soft: rgba(235, 235, 245, .6);--text-faint: rgba(235, 235, 245, .6);--brand-sep: rgba(235, 235, 245, .3);--border: rgba(84, 84, 88, .5);--accent: #40C8E0;--negative: #FF453A;--accent-ink: #40C8E0;--accent-soft: rgba(64, 200, 224, .18);--accent-text: #1C1C1E;--green: #30D158;--topbar-bg: rgba(0, 0, 0, .65);--warn-bg: rgba(255, 159, 10, .14);--warn-border: rgba(255, 159, 10, .4);--warn-text: #FFD60A;--pill-bg: rgba(48, 209, 88, .16);--shadow: none}*{box-sizing:border-box}html,body{margin:0;background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;overflow-x:clip}a{color:inherit;text-decoration:none}button{font:inherit;cursor:pointer;color:inherit;border:none;background:none}input,select,textarea{background:var(--surface);color:var(--text);color-scheme:light}:root[data-theme=dark] input,:root[data-theme=dark] select,:root[data-theme=dark] textarea{color-scheme:dark}:root[data-theme=dark] .field{background:#2c2c2e}.topbar{position:sticky;top:0;z-index:20;background:var(--topbar-bg);-webkit-backdrop-filter:blur(20px) saturate(180%);backdrop-filter:blur(20px) saturate(180%)}.topbar-inner{max-width:1080px;margin:0 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760px){.nav--desktop{display:none}.nav-mobile-controls{display:flex}.brand-text{font-size:15px}.topbar-inner{gap:12px}}.verify-banner button{background:none;border:none;color:var(--accent-ink);font-weight:700;font-size:13px;margin-left:6px}.demo-fill{display:inline-flex;align-items:center;min-height:44px;padding:0 18px;margin:14px auto 0;border-radius:999px;background:var(--accent-soft);color:var(--accent-ink);font-weight:600;font-size:15px;transition:transform .1s ease-out}.demo-fill:active{transform:scale(.96)}.link-btn{display:block;margin:14px auto 0;background:none;border:none;color:var(--accent-ink);font-weight:600;font-size:13.5px}.nav-logout{background:none;border:none;color:var(--text-faint);font-size:13px;font-weight:500;padding:8px 10px}.nav-logout:hover{color:var(--text)}.icon-btn{background:none;border:1px solid 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button{transition:transform .1s ease-out}.conv-item:active,.menu button:active{transform:scale(.98)}.icon-btn:active,.switch:active{transform:scale(.92)}.pill.demo{background:#ff9f0a29;color:#8c580a;border:1px solid rgba(255,159,10,.4);font-weight:700;letter-spacing:.02em;margin-left:8px;vertical-align:middle}[data-theme=dark] .pill.demo{color:#ffd60a;border-color:#ffd60a59}.demo-notice{background:var(--warn-bg);border:1px solid var(--warn-border);color:var(--text);border-radius:12px;padding:14px 16px;font-size:14px;line-height:1.55;margin:0 0 20px}.demo-notice strong{font-weight:700}