:root{--ink:#17324d;--muted:#63788d;--blue:#4b7bec;--violet:#7357d9;--mint:#5bc8af;--cream:#fff9ef;--line:#dbe5ee;--card:#fff;--danger:#cf4d6f}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:"Nirmala UI","Segoe UI",sans-serif;color:var(--ink);background:#f7fbff}.topbar{height:74px;padding:0 max(5vw,24px);display:flex;align-items:center;justify-content:space-between;background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:5}.brand{display:flex;align-items:center;gap:10px;font-size:21px;font-weight:800;color:var(--ink);text-decoration:none}.logo{display:grid;place-items:center;width:39px;height:39px;border-radius:14px;background:linear-gradient(135deg,var(--blue),var(--violet));color:#fff}.topbar nav{display:flex;gap:28px}.topbar nav a{color:var(--muted);text-decoration:none;font-weight:650}.topbar nav a:hover{color:var(--blue)}main{max-width:1160px;margin:auto;padding:0 24px}.hero{min-height:510px;display:grid;grid-template-columns:1.25fr .75fr;gap:50px;align-items:center}.eyebrow,.label{font-size:13px;text-transform:uppercase;letter-spacing:.11em;font-weight:800;color:var(--violet)}h1{font-size:clamp(42px,6vw,70px);line-height:1.08;margin:14px 0 20px;letter-spacing:-.04em}h1 span{color:var(--blue)}.hero p{font-size:19px;line-height:1.65;color:var(--muted);max-width:600px;margin-bottom:30px}.primary,.record{display:inline-flex;align-items:center;justify-content:center;border:0;border-radius:15px;background:linear-gradient(135deg,var(--blue),var(--violet));color:#fff;padding:15px 22px;font-weight:800;text-decoration:none;box-shadow:0 10px 24px #4b7bec35;cursor:pointer}.hero-card{height:330px;border-radius:42px;background:linear-gradient(150deg,#e5f5ff,#eee9ff);display:grid;place-items:center;position:relative;overflow:hidden;box-shadow:0 24px 70px #45637c1e}.mascot{font-size:100px;filter:drop-shadow(0 14px 12px #6673a933)}.hero-card p{position:absolute;bottom:26px;margin:0;font-weight:800;color:var(--violet)}.bubble{position:absolute;width:62px;height:62px;display:grid;place-items:center;background:#fff;border-radius:22px;font-size:25px;font-weight:900;box-shadow:0 10px 24px #304c6820}.b1{left:44px;top:55px;transform:rotate(-9deg)}.b2{right:38px;top:76px;transform:rotate(8deg)}.b3{left:70px;bottom:72px;transform:rotate(5deg)}.panel{background:#fff;border:1px solid var(--line);border-radius:28px;padding:36px;margin:0 0 28px;box-shadow:0 12px 42px #18395a0b}.section-heading{display:flex;align-items:center;gap:16px;margin-bottom:26px}.section-heading h2,.safety h2{margin:0 0 5px;font-size:28px}.section-heading p{margin:0;color:var(--muted)}.step{width:48px;height:48px;display:grid;place-items:center;border-radius:16px;background:#e9efff;color:var(--blue);font-size:21px;font-weight:900}.exercise-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:12px;margin-bottom:26px}.exercise{border:2px solid var(--line);background:#fff;border-radius:18px;padding:17px 12px;cursor:pointer;text-align:left;color:var(--ink)}.exercise strong{display:block;font-size:22px;margin-bottom:5px}.exercise span{color:var(--muted)}.exercise:hover,.exercise.active{border-color:var(--blue);background:#f4f7ff}.recorder-card{display:grid;grid-template-columns:1fr auto;gap:18px;align-items:center;background:var(--cream);border-radius:22px;padding:25px}.recorder-card h3{font-size:42px;margin:4px 0}.recorder-card p{color:var(--muted);margin:0}.recorder-actions{display:flex;gap:10px;align-items:center}.record.recording{background:var(--danger);animation:pulse 1.3s infinite}.upload{padding:13px 16px;border:1px solid var(--line);border-radius:14px;background:#fff;font-weight:750;cursor:pointer}.upload input{display:none}.status{grid-column:1/-1;border-top:1px solid #efe2cc;padding-top:14px!important}.result{display:flex;gap:22px;align-items:center;margin-top:22px;padding:22px;border-radius:20px;background:#ecfbf6}.result.hidden{display:none}.result h3{margin:5px 0;font-size:24px}.result p{margin:0;color:var(--muted)}.score-ring{width:92px;height:92px;flex:0 0 92px;border-radius:50%;display:flex;flex-direction:column;align-items:center;justify-content:center;background:#fff;border:8px solid var(--mint)}.score-ring strong{font-size:27px}.score-ring span{font-size:12px;color:var(--muted)}.history{display:grid;gap:10px}.history.empty{color:var(--muted);padding:20px 0}.history-row{display:grid;grid-template-columns:1fr 1fr auto;gap:20px;align-items:center;padding:15px 18px;border-radius:15px;background:#f5f8fb}.history-row strong{font-size:18px}.history-row span{color:var(--muted)}.history-row b{color:var(--blue);font-size:20px}.safety{display:flex;gap:20px;background:#17324d;color:#fff;border-radius:28px;padding:32px;margin:0 0 45px}.safety p{color:#d6e3ef;line-height:1.65;margin:0}.safety-icon{width:52px;height:52px;flex:0 0 52px;border-radius:18px;background:var(--mint);display:grid;place-items:center;font-size:25px;font-weight:900}footer{text-align:center;color:var(--muted);padding:25px;background:#eef5fa}@keyframes pulse{50%{transform:scale(1.04)}}@media(max-width:850px){.hero{grid-template-columns:1fr;padding:70px 0}.hero-card{display:none}.exercise-grid{grid-template-columns:repeat(2,1fr)}.recorder-card{grid-template-columns:1fr}.topbar nav{display:none}}@media(max-width:520px){main{padding:0 14px}.panel{padding:22px}.exercise-grid{grid-template-columns:1fr}.recorder-actions{align-items:stretch;flex-direction:column}.history-row{grid-template-columns:1fr auto}.history-row span{grid-column:1/-1}.safety{flex-direction:column}}