:root{--bg:#06142d;--panel:#10284b;--line:#24446d;--text:#f5f8ff;--muted:#94a9c5;--cyan:#50e6d2;--lime:#c8f36b;--violet:#8a80ff}*{box-sizing:border-box}body{margin:0;background:radial-gradient(circle at 80% -10%,#174b6e 0,transparent 35%),var(--bg);color:var(--text);font:15px Inter,Segoe UI,system-ui,sans-serif;min-height:100vh}.sky{position:fixed;inset:0;pointer-events:none;opacity:.6}.sky i{position:absolute;width:4px;height:4px;border-radius:50%;background:#fff;box-shadow:70px 140px #fff,280px 60px #82deda,440px 190px #fff,160px 420px #77ecd9,360px 560px #fff}.sky i:nth-child(2){left:35%;top:120px}.sky i:nth-child(3){left:70%;top:320px}main{position:relative;max-width:720px;margin:auto;padding:0 16px 105px}.view{display:none;animation:fade .25s ease}.view.active{display:block}@keyframes fade{from{opacity:0;transform:translateY(5px)}}.hero{padding:22px 0 18px}.topline{display:flex;align-items:center;gap:11px}.topline>div{display:grid}.topline small,.eyebrow{color:var(--cyan);font-size:10px;font-weight:800;letter-spacing:.16em}.logo,.avatar{display:grid;place-items:center;border:1px solid #5de8d7;background:#0c2748;color:var(--cyan)}.logo{width:42px;height:42px;border-radius:14px;font-size:24px;font-weight:900}.avatar{margin-left:auto;width:42px;height:42px;border-radius:50%;font-weight:800}.hero-copy{padding:42px 4px 24px}.hero h1,.view>h1{font-size:38px;line-height:1.08;margin:10px 0 14px}.hero h1 em{font-style:normal;color:var(--cyan)}p{color:var(--muted);line-height:1.55}.stats,.skill-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:9px}.stats div,.panel,.skill-grid button,.topic-list button{border:1px solid var(--line);background:linear-gradient(145deg,#122e54dd,#0b203fdd);border-radius:19px}.stats div{padding:14px;text-align:center}.stats strong,.stats span{display:block}.stats strong{font-size:22px;color:var(--lime)}.stats span{font-size:10px;color:var(--muted);margin-top:3px}.panel{padding:22px}.daily{margin-top:7px}.daily h2{margin:8px 0}.primary{width:100%;padding:15px 18px;border:0;border-radius:14px;background:linear-gradient(100deg,var(--lime),var(--cyan));color:#062238;font-weight:900;font-size:15px;display:flex;justify-content:center;gap:12px}.section-title{margin:28px 3px 14px}.skill-grid{grid-template-columns:repeat(2,1fr)}button{font:inherit;color:inherit;cursor:pointer}.skill-grid button{padding:19px;text-align:left}.skill-grid button span,.skill-grid button b,.skill-grid button small{display:block}.skill-grid button span{font-size:24px}.skill-grid button b{margin:10px 0 4px}.skill-grid button small{color:var(--muted)}.disabled{opacity:.52;cursor:default}.back{width:42px;height:42px;margin:20px 12px 24px 0;border:1px solid var(--line);border-radius:13px;background:#10284b}.form{display:grid;gap:18px}.form label{color:var(--muted);font-size:12px}.form select,.composer textarea{width:100%;margin-top:7px;padding:14px;border:1px solid var(--line);border-radius:13px;background:#071a36;color:#fff;font:inherit;outline:none}.topic-list{display:grid;gap:12px}.topic-list button{display:flex;align-items:center;gap:15px;padding:18px;text-align:left}.topic-list button>span{font-size:28px}.topic-list button div{display:grid;gap:4px}.topic-list small{color:var(--muted)}.topic-list i{margin-left:auto;color:var(--cyan)}.practice header{position:sticky;top:0;z-index:3;display:flex;align-items:center;background:#06142ded;padding-bottom:12px}.practice header>div{display:grid}.practice header small{color:var(--muted)}.live{margin-left:auto;color:#ff738c;font-size:11px}.dialog{min-height:56vh;padding:12px 0 20px;display:flex;flex-direction:column;gap:12px}.bubble{max-width:88%;padding:15px 17px;border-radius:18px;white-space:pre-wrap;line-height:1.5}.bubble.tutor{align-self:flex-start;background:#122e54;border:1px solid var(--line);border-bottom-left-radius:5px}.bubble.student{align-self:flex-end;background:#2a725f;color:#fff;border-bottom-right-radius:5px}.feedback{border:1px solid #6a6535;background:#2c2a1b;border-radius:15px;padding:14px;color:#f9e99c;font-size:13px}.speak{border:0;background:transparent;color:var(--cyan);padding:8px 0 0}.composer{position:sticky;bottom:76px;background:#0b203ff5;border:1px solid var(--line);border-radius:20px;padding:12px}.composer textarea{margin:0;resize:none;height:70px}.composer>div{display:flex;gap:9px;margin-top:9px}.mic,.send{border:0;border-radius:12px;padding:12px}.mic{width:48px;background:#213d62}.send{flex:1;background:var(--cyan);color:#062238;font-weight:800}.composer small{display:block;color:var(--muted);font-size:10px;margin-top:8px}.toast{position:fixed;left:50%;bottom:95px;transform:translateX(-50%) translateY(20px);background:#f6f8ff;color:#11213a;padding:11px 16px;border-radius:99px;opacity:0;transition:.2s;z-index:8}.toast.show{opacity:1;transform:translateX(-50%)}nav{position:fixed;z-index:6;left:0;right:0;bottom:0;display:grid;grid-template-columns:repeat(4,1fr);background:#071831ed;border-top:1px solid var(--line);padding:8px max(8px,env(safe-area-inset-right)) calc(8px + env(safe-area-inset-bottom))}nav button{border:0;background:transparent;color:var(--muted);font-size:10px}nav button span{display:block;font-size:21px;margin-bottom:2px}nav button.active{color:var(--cyan)}@media(min-width:700px){main{padding-top:15px}.hero h1,.view>h1{font-size:48px}}
.voice-browser{width:100%;margin-top:10px}
.browser-note{display:block;margin-top:8px;color:var(--muted);line-height:1.4}