:root{
  --bg:#f4f7fb; --card:#ffffff; --ink:#0d1728; --muted:#64748b;
  --line:#dfe8f2; --blue:#0969da; --blue2:#0b57c8; --soft:#eaf3ff;
  --green:#0a8f55; --danger:#d23a3a; --shadow:0 18px 60px rgba(25,55,90,.10);
}
*{box-sizing:border-box}
body{margin:0;font-family:"Tahoma","Arial",sans-serif;background:
 radial-gradient(circle at 10% 5%,#e7f2ff 0,transparent 35%),
 radial-gradient(circle at 90% 10%,#eef7ff 0,transparent 30%),var(--bg);color:var(--ink)}
.shell{max-width:1160px;margin:auto;padding:28px 18px 60px}
.topbar{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:28px}
.brand{display:flex;align-items:center;gap:12px;font-weight:900;font-size:22px}
.logo{width:42px;height:42px;border-radius:12px;background:linear-gradient(145deg,var(--blue),#35a1ff);color:#fff;display:grid;place-items:center;box-shadow:0 8px 24px #0969da33}
.badge{background:#fff;border:1px solid var(--line);padding:8px 12px;border-radius:999px;font-size:12px;color:var(--muted)}
.hero{display:grid;grid-template-columns:1.05fr .95fr;gap:24px;align-items:stretch}
.panel{background:rgba(255,255,255,.96);border:1px solid var(--line);border-radius:24px;box-shadow:var(--shadow);overflow:hidden}
.intro{padding:34px}
.eyebrow{font-size:13px;color:var(--blue);font-weight:800;margin-bottom:10px}
h1{font-size:42px;line-height:1.25;margin:0 0 14px}
.sub{font-size:16px;line-height:1.9;color:var(--muted);margin:0 0 24px}
.ai-disclosure{font-size:12px;color:#52657a;background:#f7fafc;border:1px solid var(--line);padding:10px 12px;border-radius:12px;margin-bottom:20px}
.formgrid{display:grid;grid-template-columns:1fr 1fr;gap:10px}
input{width:100%;border:1px solid #d7e2ef;background:white;border-radius:12px;padding:13px 14px;font:inherit;outline:none}
input:focus{border-color:#8ec1ff;box-shadow:0 0 0 3px #ddecff}
.actions{display:flex;gap:10px;margin-top:16px;flex-wrap:wrap}
button{border:0;border-radius:13px;padding:14px 18px;font:inherit;font-weight:800;cursor:pointer}
.primary{background:var(--blue);color:#fff;min-width:180px}.primary:hover{background:var(--blue2)}
.secondary{background:#eef4fb;color:#1e3a5f}.danger{background:#fff0f0;color:var(--danger)}
button:disabled{opacity:.55;cursor:not-allowed}
.voicebox{padding:30px;display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:470px;background:linear-gradient(180deg,#fff,#f7fbff)}
.orb{width:170px;height:170px;border-radius:50%;display:grid;place-items:center;position:relative;background:radial-gradient(circle at 35% 30%,#64c4ff,#126bd6 55%,#064499);box-shadow:0 24px 80px #0969da44;margin:20px 0}
.orb:before,.orb:after{content:"";position:absolute;border:1px solid #7cc4ff77;border-radius:50%;inset:-14px}
.orb:after{inset:-28px;opacity:.5}
.orb.listening{animation:pulse 1.3s infinite}.orb.speaking{animation:talk .7s infinite alternate}
.mic{font-size:42px;color:white}
@keyframes pulse{50%{transform:scale(1.05);box-shadow:0 24px 95px #0969da66}}
@keyframes talk{to{transform:scale(1.035)}}
.status{font-weight:900;font-size:18px;margin-top:8px}.statussub{font-size:13px;color:var(--muted);margin-top:8px;text-align:center}
.timer{font-variant-numeric:tabular-nums;margin-top:16px;background:#fff;border:1px solid var(--line);border-radius:999px;padding:7px 12px;color:#52657a}
.transcript{margin-top:24px;padding:22px}
.transcript h2{margin:0 0 14px;font-size:20px}
.chat{height:300px;overflow:auto;border:1px solid var(--line);background:#f8fafc;border-radius:16px;padding:14px}
.msg{max-width:83%;padding:10px 13px;border-radius:14px;margin:8px 0;line-height:1.7;font-size:14px;white-space:pre-wrap}
.msg.user{margin-right:auto;background:#e6f1ff;border-bottom-left-radius:5px}
.msg.ai{margin-left:auto;background:#fff;border:1px solid #e4ebf3;border-bottom-right-radius:5px}
.recommend{display:none;margin-top:12px;background:#eef8ff;border:1px solid #bedcff;border-radius:14px;padding:14px}
.recommend.show{display:block}.recommend a{color:var(--blue);font-weight:800;text-decoration:none}
.smalltools{margin-top:24px;padding:18px 22px;display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.smalltools textarea{flex:1;min-width:250px;border:1px solid var(--line);border-radius:12px;padding:12px;font:inherit;resize:vertical}
.footer{text-align:center;color:#8090a2;font-size:12px;margin-top:28px}
@media(max-width:850px){.hero{grid-template-columns:1fr}h1{font-size:32px}.formgrid{grid-template-columns:1fr}.voicebox{min-height:360px}}