:root{--coral: #ff7757;--teal: #2a9d8f;--teal-deep: #1d6f77;--bg: var(--tg-theme-bg-color, #ffffff);--bg-secondary: var(--tg-theme-secondary-bg-color, #f2f4f5);--text: var(--tg-theme-text-color, #1a1a1a);--hint: var(--tg-theme-hint-color, #7a8a8f);--card-radius: 16px}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,sans-serif;background:var(--bg-secondary);color:var(--text);-webkit-font-smoothing:antialiased}.app{max-width:640px;margin:0 auto;padding:16px 16px 84px;min-height:100vh}.screen-title{font-size:22px;font-weight:800;margin:4px 0 16px}.card{background:var(--bg);border-radius:var(--card-radius);padding:16px;margin-bottom:12px}.card h3{font-size:15px;font-weight:700;margin-bottom:8px}.muted{color:var(--hint);font-size:13px}.stat-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:12px}.stat{background:var(--bg);border-radius:var(--card-radius);padding:14px}.stat .value{font-size:24px;font-weight:800;color:var(--teal)}.stat .value.coral{color:var(--coral)}.stat .label{font-size:12px;color:var(--hint);margin-top:2px}.hero{background:linear-gradient(135deg,var(--teal-deep),var(--teal));color:#fff;border-radius:var(--card-radius);padding:18px;margin-bottom:12px}.hero .big{font-size:28px;font-weight:800}.hero .sub{opacity:.85;font-size:13px;margin-top:4px}.progressbar{height:8px;background:#ffffff40;border-radius:4px;margin-top:12px;overflow:hidden}.progressbar>div{height:100%;background:var(--coral);border-radius:4px;transition:width .4s ease}.focus-item{display:flex;gap:10px;padding:8px 0;border-bottom:1px solid var(--bg-secondary)}.focus-item:last-child{border-bottom:none}.focus-num{flex:none;width:24px;height:24px;border-radius:50%;background:var(--coral);color:#fff;font-size:13px;font-weight:700;display:flex;align-items:center;justify-content:center}.focus-item b{display:block;font-size:14px}.focus-item span{font-size:13px;color:var(--hint)}.practice-btn{display:block;width:100%;padding:14px;border:none;border-radius:var(--card-radius);background:var(--coral);color:#fff;font-size:16px;font-weight:700;cursor:pointer}.practice-btn.secondary{background:var(--teal)}.attempt{background:var(--bg);border-radius:var(--card-radius);margin-bottom:10px;overflow:hidden}.attempt summary{padding:14px 16px;cursor:pointer;list-style:none;display:flex;align-items:center;gap:12px}.attempt summary::-webkit-details-marker{display:none}.band-chip{flex:none;min-width:44px;text-align:center;padding:4px 8px;border-radius:10px;background:var(--teal);color:#fff;font-weight:800;font-size:14px}.attempt .q{font-size:14px;font-weight:600}.attempt .meta{font-size:12px;color:var(--hint)}.attempt-body{padding:0 16px 14px;font-size:14px}.attempt-body .transcript{background:var(--bg-secondary);border-radius:10px;padding:10px;font-style:italic;margin-bottom:10px}.error-item{margin-bottom:8px;font-size:13px}.error-item .fix{color:var(--teal);font-weight:600}.chart-wrap{background:var(--bg);border-radius:var(--card-radius);padding:16px;margin-bottom:12px}.tabbar{position:fixed;bottom:0;left:0;right:0;background:var(--bg);border-top:1px solid var(--bg-secondary);display:flex;max-width:640px;margin:0 auto;padding-bottom:env(safe-area-inset-bottom)}.tabbar button{flex:1;padding:10px 0 8px;border:none;background:none;font-size:11px;color:var(--hint);cursor:pointer}.tabbar button.active{color:var(--coral);font-weight:700}.tabbar .icon{font-size:20px;display:block;margin-bottom:2px}.center{text-align:center;padding:48px 16px;color:var(--hint)}.skill-banner{display:block;width:100%;aspect-ratio:16 / 9;object-fit:cover;border-radius:var(--card-radius);margin:0 0 8px}.section-header{font-size:14px;font-weight:800;margin:16px 4px 8px;text-transform:uppercase;letter-spacing:.4px;color:var(--hint)}.test-card{display:flex;width:100%;align-items:center;justify-content:space-between;gap:12px;background:var(--bg);border:none;border-radius:var(--card-radius);padding:14px 16px;margin-bottom:8px;text-align:left;cursor:pointer;color:var(--text);font-family:inherit}.test-card .q{font-size:15px;font-weight:600}.test-card .meta{font-size:12px;color:var(--hint);margin-top:2px}.test-card.locked{opacity:.55;cursor:default}.path-item{display:flex;gap:10px;align-items:stretch}.path-item .test-card{flex:1}.path-node{display:flex;flex-direction:column;align-items:center;width:34px;flex:none}.path-circle{width:32px;height:32px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:800;flex:none;margin-top:6px}.path-circle.passed{background:var(--teal);color:#fff}.path-circle.active{background:var(--coral);color:#fff}.path-circle.locked{background:var(--bg);font-size:13px}.path-line{width:3px;flex:1;min-height:10px;background:var(--bg);border-radius:2px;margin:2px 0}.path-line.passed{background:var(--teal)}.unlock-banner{border-left:4px solid var(--teal);font-size:14px}.progress-row{display:flex;justify-content:space-between;align-items:baseline;font-size:15px;margin-bottom:8px}.progressline{height:10px;background:var(--bg-secondary);border-radius:6px;overflow:hidden}.progressline>div{height:100%;background:linear-gradient(90deg,var(--teal),var(--coral));border-radius:6px;transition:width .4s ease}.loader-wrap{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:70vh;gap:18px}.loader-parrot{position:relative;width:110px;height:110px}.loader-parrot img{width:90px;height:90px;border-radius:50%;position:absolute;top:10px;left:10px;animation:parrot-wobble 1.2s ease-in-out infinite}.loader-ring{position:absolute;inset:0;border-radius:50%;border:4px solid color-mix(in srgb,var(--teal) 30%,transparent);border-top-color:var(--coral);animation:ring-spin 1s linear infinite}.loader-text{color:var(--hint);font-size:14px}@keyframes ring-spin{to{transform:rotate(360deg)}}@keyframes parrot-wobble{0%,to{transform:rotate(-6deg)}50%{transform:rotate(6deg)}}.back-btn{border:none;background:none;color:var(--teal);font-size:15px;font-weight:600;padding:4px 0 12px;cursor:pointer}.passage{white-space:pre-wrap;font-size:14px;line-height:1.55}.option{display:flex;align-items:center;gap:10px;padding:10px 12px;margin:6px 0;border-radius:10px;background:var(--bg-secondary);font-size:14px;cursor:pointer}.option.selected{outline:2px solid var(--teal);background:color-mix(in srgb,var(--teal) 12%,var(--bg-secondary))}.option input{accent-color:var(--teal)}.gap-input,.essay-input{width:100%;border:1px solid var(--bg-secondary);border-radius:10px;padding:10px 12px;font-size:14px;font-family:inherit;background:var(--bg);color:var(--text)}.essay-input{resize:vertical;line-height:1.5}.card.ok{border-left:4px solid var(--teal)}.card.wrong{border-left:4px solid var(--coral)}.explain{margin-top:6px;font-size:13px;color:var(--hint)}.premium-badge{display:inline-block;background:var(--coral);color:#fff;font-size:11px;font-weight:700;padding:2px 8px;border-radius:8px;margin-left:6px;vertical-align:middle}