:root{--color-bg:#0b0d10;--color-surface:#15181c;--color-surface-2:#1c2026;--color-border:#2a2e34;--color-border-2:#3a3e44;--color-text:#e6e6e6;--color-text-dim:#9ca3af;--color-text-faint:#6b7280;--color-primary:#3b82f6;--color-primary-2:#2563eb;--color-success:#22c55e;--color-success-bg:#0f2419;--color-success-fg:#86efac;--color-warn:#fcd34d;--color-warn-bg:#3a2c14;--color-error:#fca5a5;--color-error-bg:#3a1414}*{box-sizing:border-box}body,html{margin:0;padding:0}body{font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:var(--color-bg);color:var(--color-text);min-height:100vh;line-height:1.5;-webkit-font-smoothing:antialiased;-webkit-tap-highlight-color:transparent}a{color:inherit}button,input,select,textarea{font:inherit;color:inherit}.app-container{max-width:880px;margin:0 auto;padding:24px 20px 48px}@media (max-width:640px){.app-container{padding:16px 14px 32px}}.app-nav{display:flex;justify-content:space-between;align-items:center;padding:0 0 16px;border-bottom:1px solid var(--color-border);margin-bottom:24px;gap:12px}.app-nav-brand{color:var(--color-text);text-decoration:none;font-weight:600;font-size:16px}.app-nav-email{font-size:12px;opacity:.7;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:180px}@media (max-width:480px){.app-nav-email{max-width:140px;font-size:11px}}@media (max-width:640px){.device-card{flex-direction:column;align-items:stretch!important;gap:12px!important}.device-card-launch{width:100%}.add-device-btn{padding:10px 16px!important;font-size:14px!important}}a.button-like,button,input[type=submit]{min-height:40px}.landing-hero{padding:80px 20px 64px;text-align:center;max-width:720px;margin:0 auto}.landing-hero h1{font-size:clamp(32px,6vw,56px);font-weight:600;margin:0 0 16px;letter-spacing:-.02em;line-height:1.1}.landing-hero p{font-size:clamp(16px,2.4vw,19px);color:var(--color-text-dim);margin:0 auto 32px;max-width:560px}.landing-cta-row{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}.btn-primary{background:var(--color-primary);color:#fff;padding:12px 22px;border-radius:8px;text-decoration:none;font-weight:500;font-size:15px;border:none;cursor:pointer;display:inline-block;transition:background .12s ease}.btn-primary:hover{background:var(--color-primary-2)}.btn-secondary{background:transparent;color:var(--color-text);padding:12px 22px;border-radius:8px;text-decoration:none;font-weight:500;font-size:15px;border:1px solid var(--color-border-2);cursor:pointer;display:inline-block}.landing-features{max-width:1040px;margin:0 auto;padding:32px 20px 80px;display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));grid-gap:16px;gap:16px}.landing-feature{background:var(--color-surface);border:1px solid var(--color-border);border-radius:10px;padding:24px 20px}.landing-feature h3{font-size:15px;margin:0 0 8px;font-weight:600}.landing-feature p{font-size:13.5px;color:var(--color-text-dim);margin:0;line-height:1.55}.landing-footer{border-top:1px solid var(--color-border);padding:24px 20px;text-align:center;color:var(--color-text-faint);font-size:12px}.login-shell{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:32px 20px}.login-card{width:100%;max-width:380px;background:var(--color-surface);border:1px solid var(--color-border);border-radius:12px;padding:32px 28px}