:root{color:#111318;background:#e9f3f1;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-synthesis:none;line-height:1.5;text-rendering:optimizeLegibility}*{box-sizing:border-box}body{margin:0;min-width:320px;min-height:100vh}button{border:0;font:inherit}.app-shell{min-height:100vh;padding:28px;background:linear-gradient(135deg,#64b6ac38,#f6b94c33 46%,#ee7b6b24),#f7faf8}.lesson-panel{width:min(1180px,100%);margin:0 auto}.topbar{display:flex;align-items:flex-start;justify-content:space-between;gap:18px;margin-bottom:24px}.eyebrow{margin:0 0 6px;color:#3a776f;font-size:.78rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase}h1,h2,h3,p{margin-top:0}h1{max-width:660px;margin-bottom:0;font-size:clamp(2.35rem,6vw,5.5rem);line-height:.96;letter-spacing:0}h2{margin-bottom:12px;font-size:clamp(1.45rem,2vw,2.2rem);line-height:1.08;letter-spacing:0}.schedule-pill{display:inline-flex;align-items:center;gap:10px;min-height:42px;padding:0 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rgba(17,19,24,.08)}.line-meta{display:flex;justify-content:space-between;gap:14px;margin-bottom:16px;color:#66736f;font-size:.86rem;font-weight:800;text-transform:uppercase}.prompt{margin-bottom:8px;color:#596762;font-weight:760}.line-card h3{margin:0 0 8px;font-size:clamp(2rem,4.5vw,4.3rem);line-height:1.03;letter-spacing:0}.translation{color:#596762;font-size:1.05rem}.action-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}.voice-status{margin:12px 0 0;color:#596762;font-size:.88rem;font-weight:700}.voice-status-ready{color:#216d63}.voice-status-warning,.voice-status-error{color:#9a4a19}.primary-action,.secondary-action,.ghost-action{display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:46px;padding:0 16px;border-radius:8px;cursor:pointer;font-weight:850}.primary-action{background:#111318;color:#fff}.secondary-action{background:#216d63;color:#fff}.ghost-action{background:#edf2f1;color:#17201e}.ghost-action:disabled{cursor:not-allowed;opacity:.48}.feedback-card{display:grid;grid-template-columns:54px minmax(0,1fr);gap:14px;margin-top:16px;padding:16px;border-radius:8px;background:#f0f7ec;color:#1e3b32}.feedback-card p{margin-bottom:4px}.feedback-card small{display:block;margin-top:6px;color:#527065;overflow-wrap:anywhere}.feedback-title{font-weight:900}.feedback-icon{display:grid;width:54px;height:54px;place-items:center;border-radius:8px;background:#dcefd6}.coach-panel{position:relative;overflow:hidden;padding:26px;min-height:520px}.coach-visual{position:relative;height:210px;margin-bottom:20px;border-radius:8px;background:linear-gradient(145deg,#e7f5f2,#fff2da)}.sun-disc{position:absolute;right:40px;top:42px;width:116px;height:116px;border-radius:50%;background:#f6b94c;box-shadow:0 0 0 18px #f6b94c38}.speech-rings{position:absolute;left:34px;bottom:34px;display:flex;gap:8px;align-items:flex-end}.speech-rings span{display:block;width:28px;border-radius:8px;background:#64b6ac}.speech-rings span:nth-child(1){height:56px}.speech-rings span:nth-child(2){height:88px;background:#ee7b6b}.speech-rings span:nth-child(3){height:42px;background:#8f83f3}.coach-panel p{color:#52625f}.coach-list{display:grid;gap:11px;margin-top:24px}.coach-list span{display:flex;align-items:center;gap:10px;min-height:42px;padding:10px 12px;border-radius:8px;background:#f4f6f4;color:#273532;font-weight:760}.progress-section{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-top:22px}.progress-card{padding:18px}.progress-card span{color:#677570;font-weight:760}.progress-card strong{display:block;margin-top:4px;font-size:2rem}.progress-card button{min-height:38px;margin-top:10px;padding:0 12px;border-radius:8px;background:#edf2f1;cursor:pointer;font-weight:800}.meter{height:8px;margin-top:12px;overflow:hidden;border-radius:999px;background:#e2e7e5}.meter i{display:block;height:100%;border-radius:inherit;background:#216d63;transition:width .24s ease}.research-note{margin-top:22px;padding:22px}.research-note h2{margin-bottom:8px}.research-note p{max-width:900px;margin-bottom:0;color:#52625f}@media(max-width:880px){.app-shell{padding:18px}.topbar,.hero-grid,.progress-section{grid-template-columns:1fr}.hero-grid,.topbar{display:grid}.schedule-pill{width:fit-content}.coach-panel{min-height:auto}}@media(max-width:560px){.practice-card{padding:16px}.learner-tabs,.language-tabs{grid-template-columns:1fr}.line-card h3{font-size:2.25rem}.primary-action,.secondary-action,.ghost-action{width:100%}}