:root{color:#182019;background:#f7f2e8;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}*{box-sizing:border-box}body{margin:0;min-width:320px}button,input{font:inherit}button{border:0;cursor:pointer}.login-shell{min-height:100vh;display:grid;place-items:center;padding:24px;background:linear-gradient(160deg,#fff8eb,#e8f1df)}.login-panel{width:min(100%,420px);padding:28px;border-radius:8px;background:#fffdf7;box-shadow:0 16px 50px #1f271c1f}.brand-mark{width:48px;height:48px;display:grid;place-items:center;border-radius:8px;background:#203c2d;color:#fff;font-weight:800}.login-panel h1,.topbar h1{margin:12px 0 6px;font-size:2rem;line-height:1.05}.login-panel p{color:#5c665b;line-height:1.5}.login-panel form{display:grid;gap:12px;margin-top:24px}.login-panel input{min-height:48px;border:1px solid #d8dccf;border-radius:8px;padding:0 14px;background:#fff}.login-panel button,.primary-action{min-height:48px;border-radius:8px;background:#203c2d;color:#fff;font-weight:750}.error{color:#a3362c}.app-shell{width:min(100%,720px);min-height:100vh;margin:0 auto;padding:18px 16px 104px}.topbar{display:flex;align-items:flex-start;justify-content:space-between;gap:12px}.eyebrow{margin:0;color:#5b715f;font-size:.82rem;font-weight:750;text-transform:uppercase}.score-pill{display:flex;align-items:center;gap:6px;padding:9px 11px;border-radius:999px;background:#fffdf7;box-shadow:0 8px 24px #1f271c14;font-weight:800;white-space:nowrap}.control-row,.category-row{display:grid;gap:8px;margin-top:16px}.control-row{grid-template-columns:1fr 1fr;padding:4px;border-radius:8px;background:#e3e9d9}.control-row button,.category,.ghost-button,.bottom-actions button{min-height:42px;border-radius:8px;background:transparent;color:#26342a;font-weight:750}.control-row .active,.category.active{background:#fffdf7;box-shadow:0 6px 18px #1f271c14}.category-row{grid-template-columns:repeat(3,1fr)}.category{display:flex;align-items:center;justify-content:center;gap:6px;border:1px solid #d6dccb;background:#fffdf799}.practice-card,.learning-panel{margin-top:16px;padding:18px;border-radius:8px;background:#fffdf7;box-shadow:0 12px 36px #1f271c1a}.card-meta{display:flex;justify-content:space-between;color:#677365;font-size:.86rem;font-weight:800}.target-text{margin:18px 0 10px;font-size:clamp(1.7rem,7vw,2.5rem);line-height:1.12;font-weight:850}.support-text{margin:0;color:#5f6d5f;font-size:1.05rem;line-height:1.45}.romanization{margin:10px 0 0;color:#89652c;line-height:1.45}.audio-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:18px}.audio-grid button,.record-button{min-height:48px;display:flex;align-items:center;justify-content:center;gap:8px;border-radius:8px;background:#e9efe0;color:#203c2d;font-weight:800}.record-button{width:100%;margin-top:12px;background:#ffefd2;color:#593a12}.record-button.recording{background:#9f322a;color:#fff}.notice{margin:12px 0 0;color:#8a641f;font-weight:650}.result-panel{margin-top:14px;padding:14px;border-radius:8px;background:#eef6e8}.result-panel strong{font-size:1.4rem}.result-panel p{margin:6px 0}.result-panel small{color:#5c665b}.learning-panel{display:grid;gap:10px}.ghost-button{border:1px solid #d7dccd;background:#fffdf7}.notes{display:grid;gap:10px;color:#394439;line-height:1.5}.notes p{margin:0}.breakdown-list{display:grid;gap:8px}.breakdown-item{display:grid;gap:2px;padding:10px 12px;border-radius:8px;background:#f4f0e6}.breakdown-item span{font-weight:850}.breakdown-item p{color:#5b665a}.bottom-actions{position:fixed;left:50%;bottom:0;width:min(100%,720px);transform:translate(-50%);display:grid;grid-template-columns:.8fr 1.2fr;gap:10px;padding:12px 16px 16px;background:#f7f2e8f0;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.bottom-actions button{display:flex;align-items:center;justify-content:center;gap:8px;background:#fffdf7}@media(min-width:620px){.app-shell{padding-top:28px}.control-row,.category-row{margin-top:20px}}