:root{--font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--type-display: 2rem;--type-title: 1.45rem;--type-section: 1.08rem;--type-body: 1rem;--type-caption: .84rem;--type-button: 1rem;--space-1: 4px;--space-2: 8px;--space-3: 12px;--space-4: 16px;--space-5: 20px;--space-6: 24px;--radius-sm: 10px;--radius-md: 14px;--radius-lg: 20px;--radius-xl: 24px;--bg: #f2f5fb;--surface: rgba(255, 255, 255, .96);--text-primary: #12263a;--text-secondary: #47607a;--accent: #165fc8;--success: #177b56;--warning: #b26a00;--danger: #c62828;--border: #d8e0eb;--shadow-sm: 0 4px 12px rgba(15, 37, 57, .06);--shadow-md: 0 14px 30px rgba(16, 36, 58, .1);--motion-fast: .13s ease;--motion-base: .22s ease;font-family:var(--font-family);color:var(--text-primary);background:var(--bg)}@media (prefers-color-scheme: dark){:root{--bg: #0f1824;--surface: rgba(24, 34, 47, .95);--text-primary: #ebf3ff;--text-secondary: #afc0d4;--border: #2d3e52;--shadow-sm: none;--shadow-md: none}}*{box-sizing:border-box}body{margin:0;background:linear-gradient(180deg,var(--bg),#e8eef8);color:var(--text-primary)}.page-shell{max-width:640px;margin:0 auto;padding:max(24px,env(safe-area-inset-top)) 16px max(20px,env(safe-area-inset-bottom))}.app-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:var(--space-4)}h1{margin:0;font-size:var(--type-title);letter-spacing:-.02em}h2{margin:0;font-size:var(--type-section);letter-spacing:-.01em}.eyebrow{margin:0;font-size:var(--type-caption);text-transform:uppercase;letter-spacing:.08em;color:var(--text-secondary);font-weight:700}.icon-btn{text-decoration:none;font-size:1.2rem;color:inherit;background:color-mix(in srgb,var(--accent) 16%,transparent);border-radius:999px;width:40px;height:40px;display:inline-flex;justify-content:center;align-items:center}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:var(--space-4);margin-bottom:var(--space-3);box-shadow:var(--shadow-sm)}.hero-card{background:linear-gradient(180deg,color-mix(in srgb,var(--accent) 8%,var(--surface)),var(--surface))}.pairing-card{border-color:color-mix(in srgb,var(--accent) 34%,var(--border))}.stack{display:grid;gap:var(--space-2)}input,select{width:100%;min-height:46px;border:1px solid var(--border);border-radius:var(--radius-sm);padding:10px 12px;font-size:var(--type-body);color:var(--text-primary);background:color-mix(in srgb,var(--surface) 96%,#fff)}.big-btn,button{display:inline-flex;justify-content:center;align-items:center;width:100%;min-height:54px;border-radius:var(--radius-md);border:none;background:var(--accent);color:#fff;font-size:var(--type-button);font-weight:700;text-decoration:none;transition:transform var(--motion-fast),opacity var(--motion-fast),background var(--motion-base)}button:disabled,.big-btn:disabled{opacity:.55}.big-btn.secondary{background:#5e728b}.big-btn.tertiary,.text-btn{background:transparent;color:var(--accent);border:1px solid color-mix(in srgb,var(--accent) 36%,var(--border))}.big-btn.destructive,.station-btn.danger{background:var(--danger)}.small-btn{width:auto;min-height:36px;padding:0 12px;border-radius:var(--radius-sm)}.status-line{margin:0;font-weight:600;color:var(--text-secondary)}.status-line.warn{color:var(--warning)}.alert-row{display:flex;justify-content:space-between;gap:var(--space-3);align-items:center;margin-bottom:var(--space-2)}.pill{font-size:var(--type-caption);background:color-mix(in srgb,var(--accent) 12%,transparent);color:var(--text-primary);padding:5px 9px;border-radius:999px}.pill.chip{background:color-mix(in srgb,var(--success) 14%,transparent);color:var(--success);font-weight:700}.row-inline{display:flex;align-items:flex-end;gap:var(--space-2);overflow-wrap:anywhere}.qr-image{width:260px;max-width:100%;margin:0 auto;border-radius:var(--radius-sm);border:1px solid var(--border)}.elder-station{max-width:430px;margin:0 auto;min-height:100vh;padding:max(16px,env(safe-area-inset-top)) 16px max(16px,env(safe-area-inset-bottom));background:#111925;color:#fff;display:grid;align-content:start;gap:var(--space-5)}.elder-header-row{display:flex;justify-content:space-between;align-items:center;gap:10px}.station-btn{min-height:124px;border-radius:var(--radius-xl);font-size:1.6rem}.station-btn.safe{background:#217f72}.setup-row{display:flex;justify-content:space-between;align-items:flex-start;gap:12px;padding:10px 0;border-bottom:1px solid var(--border)}.setup-row:last-child{border-bottom:none}.subtle-note{font-weight:500;font-size:.92rem}.status-list{margin:0;padding-left:20px;color:var(--text-secondary);font-weight:600}.compact-list{display:grid;gap:10px;padding-left:20px}.compact-list li{display:grid;gap:6px}.show-more-wrap{display:flex;justify-content:center;padding-top:4px}.trial-footer{text-align:center;margin:18px 0 4px;color:var(--text-secondary)}