:root{--canvas:#f7f5ef;--surface:#fffefa;--ink:#16213a;--muted:#7a849c;--line:#d9dde7;--blue:#2457f5;--blue-soft:#e8eeff;--yellow:#ffd76a;--green:#22a06b;--amber:#a66b00;--danger:#b42318}*{box-sizing:border-box}html{background:var(--canvas);color:var(--ink)}body{background:radial-gradient(circle at 48% 38%, #fffffff2, transparent 38rem), var(--canvas);min-width:320px;min-height:100vh;color:var(--ink);font-family:var(--font-geist-sans), Inter, ui-sans-serif, system-ui, sans-serif;margin:0}button,input{font:inherit}button{color:inherit}.loading-screen,.setup-screen,.app-screen{min-height:100svh}.loading-screen{background:var(--canvas)}.setup-screen,.app-screen{place-items:center;padding:30px 20px;display:grid}.setup-shell,.control-shell{border:1px solid var(--line);background:#fffefaf0;border-radius:22px;width:min(100%,580px);overflow:hidden;box-shadow:0 20px 60px #2a334d17}.setup-shell{padding:42px}.brand-mark{background:var(--blue);border-radius:15px;place-items:center;width:48px;height:48px;margin-bottom:30px;display:grid;box-shadow:0 12px 28px #2457f53d}.brand-mark span{border:5px solid var(--yellow);border-top-color:#0000;border-radius:50%;width:20px;height:20px;transform:rotate(45deg)}.setup-form{gap:20px;display:grid}.form-heading{margin-bottom:4px}.eyebrow{color:var(--blue);letter-spacing:.13em;text-transform:uppercase;font-size:.75rem;font-weight:700}.form-heading h1,.settings-panel>h2{letter-spacing:-.04em;margin:8px 0;font-size:clamp(1.8rem,5vw,2.35rem);line-height:1.08}.form-heading p{color:var(--muted);margin:0;line-height:1.55}.setup-progress{grid-template-columns:26px 1fr 26px;align-items:center;width:112px;margin-top:22px;display:grid}.setup-progress span{border:1px solid 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var(--line);background:#fff}.button:hover{filter:brightness(.98)}.button:disabled{cursor:not-allowed;box-shadow:none;filter:none;opacity:.5}.button:focus-visible,.app-footer button:focus-visible,.power-control:focus-visible{outline:3px solid var(--blue);outline-offset:4px}.form-error{color:var(--danger);margin:-4px 0 0;font-size:.875rem}.privacy-note{color:var(--muted);text-align:right;margin:-8px 0 0;font-size:.75rem}.app-header{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;gap:24px;min-height:116px;padding:24px 40px;display:flex}.app-header h1{letter-spacing:-.04em;margin:0 0 3px;font-size:1.85rem;line-height:1.1}.app-header p{color:var(--muted);margin:0;font-size:.9rem}.connection-state{color:var(--muted);align-items:center;gap:9px;font-size:.875rem;font-weight:600;display:flex}.connection-state 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