:root{--bg:#f5f2ec;--panel:#fffdf8;--ink:#1b1d22;--muted:#68707d;--line:#d9d3c7;--reference:#0f6b68;--user:#be4b62;--live:#b76b16;--accent:#3454d1;--accent-strong:#253fb0;--warning:#9a5c00;--success:#2d6a4f;--shadow:0 12px 34px #1f232814}*{box-sizing:border-box}html,body{min-height:100%;color:var(--ink);background:var(--bg);margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif}button,input,select{font:inherit}a{color:inherit}.shell{width:min(1180px,100vw - 32px);margin:0 auto;padding:28px 0 48px}.topbar{justify-content:space-between;align-items:center;gap:16px;margin-bottom:22px;display:flex}.brand{flex-direction:column;gap:4px;display:flex}.brand h1{margin:0;font-size:clamp(26px,3vw,38px);line-height:1.08}.brand p{color:var(--muted);margin:0;font-size:15px}.navlink{color:var(--accent);align-items:center;gap:8px;font-weight:700;text-decoration:none;display:inline-flex}.practice-grid{grid-template-columns:minmax(0,1fr) 340px;align-items:start;gap:20px;display:grid}.workspace{flex-direction:column;gap:18px;display:flex}.panel{background:var(--panel);border:1px solid var(--line);box-shadow:var(--shadow);border-radius:8px}.sentence-panel{padding:22px}.sentence-meta{flex-wrap:wrap;gap:8px;margin-bottom:14px;display:flex}.pill{border:1px solid var(--line);min-height:26px;color:var(--muted);background:#fffaf0;border-radius:999px;align-items:center;padding:4px 9px;font-size:12px;font-weight:700;display:inline-flex}.sentence-text{letter-spacing:0;margin:0;font-size:clamp(28px,4.2vw,48px);line-height:1.15}.controls{grid-template-columns:repeat(auto-fit,minmax(128px,1fr));gap:10px;display:grid}.button{border:1px solid var(--line);min-height:44px;color:var(--ink);cursor:pointer;background:#fffdf8;border-radius:8px;justify-content:center;align-items:center;gap:8px;padding:9px 14px;font-weight:800;transition:transform .14s,border-color .14s,background .14s;display:inline-flex}.button:hover:not(:disabled){border-color:#b8afa0;transform:translateY(-1px)}.button:disabled{cursor:not-allowed;opacity:.48}.button.primary{border-color:var(--accent);color:#fff;background:var(--accent)}.button.primary:hover:not(:disabled){background:var(--accent-strong)}.button.danger{color:#fff;background:#a23a4f;border-color:#a23a4f}.button.ghost{background:0 0}.button.live{border-color:var(--live);color:#fff;background:var(--live)}.button.live:hover:not(:disabled){background:#945711}.control-error{color:#a23a4f;grid-column:1/-1;font-size:13px;font-weight:700}.live-status{min-height:22px;color:var(--muted);grid-column:1/-1;font-size:13px;font-weight:700}.live-status.active{color:var(--live)}.status-line{min-height:24px;color:var(--muted);font-size:14px}.status-line.error{color:#a23a4f;font-weight:700}.chart-panel{padding:18px}.chart-header{justify-content:space-between;align-items:center;gap:12px;margin-bottom:12px;display:flex}.chart-header h2,.side-panel h2,.library-card h2{margin:0;font-size:18px}.legend{color:var(--muted);flex-wrap:wrap;gap:12px;font-size:13px;display:flex}.legend-item{align-items:center;gap:6px;display:inline-flex}.swatch{background:currentColor;border-radius:999px;width:24px;height:3px}.swatch.user{background:0 0;border-top:3px dashed}.swatch.live{height:4px}.chart-wrap{width:100%;overflow-x:auto}.prosody-svg{width:100%;min-width:680px;height:auto;display:block}.axis-label{fill:var(--muted);font-size:12px}.word-label{fill:#363b44;font-size:12px;font-weight:700}.empty-chart{min-height:280px;color:var(--muted);border:1px dashed var(--line);border-radius:8px;place-items:center;display:grid}.side-panel{flex-direction:column;gap:16px;display:flex}.scores{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;display:grid}.score-card{border:1px solid var(--line);background:var(--panel);border-radius:8px;min-height:110px;padding:14px}.score-card span{color:var(--muted);font-size:13px;font-weight:800}.score-card strong{margin-top:10px;font-size:30px;line-height:1;display:block}.score-card small{color:var(--muted);margin-top:8px;line-height:1.35;display:block}.feedback,.side-note{padding:16px}.feedback ul{color:#2f3540;margin:12px 0 0;padding-left:20px}.feedback li+li{margin-top:8px}.side-note p{color:var(--muted);margin:8px 0 0;line-height:1.55}.timeline{flex-wrap:wrap;gap:8px;margin-top:16px;display:flex}.timeline-word{color:#29313a;border-bottom:3px solid #0f6b6859;padding-bottom:3px;font-size:14px;font-weight:800}.library-grid{grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px;display:grid}.library-card{padding:16px}.library-card p{color:var(--muted);line-height:1.5}.metadata{color:var(--muted);gap:6px;font-size:13px;display:grid}@media (max-width:900px){.practice-grid{grid-template-columns:1fr}.controls{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (max-width:560px){.shell{width:min(100vw - 20px,1180px);padding-top:18px}.topbar{flex-direction:column;align-items:flex-start}.controls,.scores{grid-template-columns:1fr}}