:root{--bg: #0b0f14;--surface: #121821;--border: #1f2a37;--text: #e7edf3;--text-dim: #8a98a8;--accent: #5eead4;--talking: #f97362}*{box-sizing:border-box}html,body{margin:0;height:100%;background:var(--bg);color:var(--text);font-family:-apple-system,system-ui,Segoe UI,Roboto,sans-serif}#app{min-height:100dvh;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:24px;gap:24px}.card{width:100%;max-width:360px;display:flex;flex-direction:column;gap:16px}h1{font-size:22px;font-weight:600;letter-spacing:-.01em;margin:0}p.hint{margin:0;color:var(--text-dim);font-size:14px;line-height:1.5}input{width:100%;padding:12px 14px;border-radius:10px;border:1px solid var(--border);background:var(--surface);color:var(--text);font-size:16px;transition:border-color .15s ease}input:focus{outline:none;border-color:var(--accent)}button.primary{padding:12px 16px;border-radius:10px;border:none;background:var(--accent);color:#06201c;font-size:15px;font-weight:600;cursor:pointer;transition:transform .1s ease}button.primary:active{transform:scale(.98)}.member-list{display:flex;flex-direction:column;gap:8px;width:100%;max-width:320px}.member{display:flex;align-items:center;gap:10px;padding:8px 12px;border-radius:8px;background:var(--surface);font-size:14px;color:var(--text-dim)}.member .dot{width:8px;height:8px;border-radius:50%;background:var(--text-dim);transform:scale(1);transition:transform .2s ease,background .2s ease}.member.talking{color:var(--text)}.member.talking .dot{background:var(--talking);transform:scale(1.3)}.ptt{width:148px;height:148px;border-radius:50%;border:none;background:var(--surface);border:2px solid var(--border);color:var(--text);font-size:15px;font-weight:600;letter-spacing:.02em;cursor:pointer;user-select:none;-webkit-user-select:none;touch-action:none;transform:scale(1);transition:transform .12s cubic-bezier(.2,0,.1,1),background .15s ease,border-color .15s ease}.ptt.active{background:var(--talking);border-color:var(--talking);color:#2a0a06;transform:scale(.94)}.status{font-size:13px;color:var(--text-dim);min-height:18px}@media (prefers-reduced-motion: reduce){button.primary,.ptt,.member .dot{transition:none}}