:root{--brand:#e81c50;--brand-deep:#c0113f;--brand-2:#f06b8d;--brand-soft:#fce7ee;--ink:#201c1d;--ink-soft:#6b6266;--ink-faint:#9a9095;--surface:#fff;--surface-2:#fbf6f8;--bg:#f7f2f4;--line:#eee4e8;--live:#e81c50;--radius:12px;--shadow:0 1px 2px #201c1d0a, 0 8px 24px -12px #201c1d24;--shadow-lift:0 2px 6px #201c1d0f, 0 20px 40px -16px #e81c5047;--primary:var(--brand);--primary-dark:var(--brand-deep);--text:var(--ink);--text-soft:var(--ink-soft);--border:var(--line);--success:#16a34a;--danger:#dc2626;--warning:#d97706}@media (prefers-color-scheme:dark){:root{--brand:#ff3d6e;--brand-deep:#ff6389;--brand-2:#ff88a6;--brand-soft:#2a1820;--ink:#f6eef1;--ink-soft:#b4a8ae;--ink-faint:#7c7076;--surface:#201b1e;--surface-2:#191518;--bg:#141013;--line:#322a2e;--live:#ff3d6e;--shadow:0 1px 2px #0006, 0 10px 30px -14px #0009;--shadow-lift:0 2px 6px #00000080, 0 24px 46px -18px #ff3d6e4d;--success:#4ade80;--danger:#f87171;--warning:#fbbf24}}:root[data-theme=dark]{--brand:#ff3d6e;--brand-deep:#ff6389;--brand-2:#ff88a6;--brand-soft:#2a1820;--ink:#f6eef1;--ink-soft:#b4a8ae;--ink-faint:#7c7076;--surface:#201b1e;--surface-2:#191518;--bg:#141013;--line:#322a2e;--live:#ff3d6e;--shadow:0 1px 2px #0006, 0 10px 30px -14px #0009;--shadow-lift:0 2px 6px #00000080, 0 24px 46px -18px #ff3d6e4d;--success:#4ade80;--danger:#f87171;--warning:#fbbf24}:root[data-theme=light]{--brand:#e81c50;--brand-deep:#c0113f;--brand-2:#f06b8d;--brand-soft:#fce7ee;--ink:#201c1d;--ink-soft:#6b6266;--ink-faint:#9a9095;--surface:#fff;--surface-2:#fbf6f8;--bg:#f7f2f4;--line:#eee4e8;--live:#e81c50;--shadow:0 1px 2px #201c1d0a, 0 8px 24px -12px #201c1d24;--shadow-lift:0 2px 6px #201c1d0f, 0 20px 40px -16px #e81c5047;--success:#16a34a;--danger:#dc2626;--warning:#d97706}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg);color:var(--text);min-height:100vh;font-family:Segoe 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transparent);border:none;border-radius:50%;font-size:26px;line-height:1;position:fixed;bottom:24px;right:24px}.content-fab:hover{background:var(--primary-dark)}.content-media-preview-list{flex-wrap:wrap;gap:8px;display:flex}.content-media-preview-item{border-radius:8px;width:84px;height:84px;position:relative;overflow:hidden}.content-media-preview-item img,.content-media-preview-item video{object-fit:cover;width:100%;height:100%}.content-media-preview-item .remove{color:#fff;cursor:pointer;background:#dc2626e6;border:none;border-radius:50%;width:20px;height:20px;font-size:11px;position:absolute;top:3px;right:3px}.content-media-preview-order{color:#fff;background:#0009;border-radius:6px;padding:1px 6px;font-size:10px;font-weight:700;position:absolute;top:3px;left:3px}.content-media-preview-move{justify-content:space-between;padding:3px;display:flex;position:absolute;bottom:0;left:0;right:0}.content-media-preview-move button{color:#fff;cursor:pointer;background:#0009;border:none;border-radius:6px;place-items:center;width:22px;height:22px;font-size:12px;display:grid}.content-media-preview-move button:disabled{opacity:.3;cursor:default}.ratio-preview-box{background:#1a1e29;border-radius:10px;justify-content:center;align-items:center;width:100%;max-height:340px;margin-top:10px;display:flex;overflow:hidden}.ratio-preview-box img,.ratio-preview-box video{object-fit:contain;width:100%;height:100%}.ratio-picker{gap:8px;margin:10px 0;display:flex}.ratio-chip{border:1px solid var(--border);background:var(--surface);cursor:pointer;color:var(--text-soft);border-radius:10px;flex-direction:column;align-items:center;gap:4px;padding:8px 12px;font-size:12px;display:flex}.ratio-chip.active{border-color:var(--primary);color:var(--primary);background:var(--brand-soft)}.ratio-chip-box{border:2px solid;border-radius:3px;width:22px}.ratio-chip 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12px;font-size:14px}.offer-card-body{padding:14px}.offer-teacher{align-items:center;gap:10px;margin-bottom:10px;display:flex}.offer-avatar{object-fit:cover;border-radius:50%;flex-shrink:0;width:40px;height:40px}.offer-avatar-fallback{background:var(--bg);justify-content:center;align-items:center;font-size:18px;display:flex}.offer-desc{color:var(--text-soft);-webkit-line-clamp:2;-webkit-box-orient:vertical;margin-bottom:10px;font-size:13px;display:-webkit-box;overflow:hidden}.offer-meta{color:var(--text-soft);justify-content:space-between;align-items:center;font-size:13px;display:flex}.offer-price{color:var(--primary);font-weight:700}.teachers{grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:20px;display:grid}.tcard{background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow);cursor:pointer;border-radius:18px;flex-direction:column;padding:22px 20px;transition:transform .16s cubic-bezier(.2,.7,.3,1),box-shadow .16s,border-color .16s;display:flex}.tcard:hover{box-shadow:var(--shadow-lift);transform:translateY(-4px)}.tcard.mine{border-color:var(--brand)}.tcard-top{align-items:center;gap:14px;margin-bottom:14px;display:flex}.tcard .ta{color:#fff;border-radius:50%;flex-shrink:0;place-items:center;width:58px;height:58px;font-size:20px;font-weight:700;display:grid;position:relative;overflow:hidden}.tcard .ta img{object-fit:cover;width:100%;height:100%}.tcard .ta .online{border:2.5px solid var(--surface);background:#22c55e;border-radius:50%;width:13px;height:13px;position:absolute;bottom:2px;right:2px}.tcard .tn{font-size:16px;font-weight:700}.tcard .tb{color:var(--brand);margin-top:2px;font-size:13px;font-weight:600}.tcard .mine-badge{color:var(--brand);background:var(--brand-soft);border-radius:999px;margin-top:5px;padding:2px 8px;font-size:11px;font-weight:700;display:inline-block}.tcard .tdesc{color:var(--ink-soft);-webkit-line-clamp:3;-webkit-box-orient:vertical;flex-grow:1;margin:0 0 16px;font-size:13.5px;line-height:1.55;display:-webkit-box;overflow:hidden}.tcard .tags{flex-wrap:wrap;gap:6px;margin-bottom:18px;display:flex}.tcard .tags span{color:var(--ink-soft);background:var(--surface-2);border:1px solid var(--line);border-radius:999px;padding:3px 9px;font-size:11.5px;font-weight:600}.tcard-foot{justify-content:space-between;align-items:center;gap:10px;margin-top:auto;display:flex}.tcard .price{color:var(--ink);white-space:nowrap;font-size:18px;font-weight:800}.tcard .price span{color:var(--ink-faint);font-size:12.5px;font-weight:500}.tcard .book{background:var(--brand);color:#fff;cursor:pointer;white-space:nowrap;border:none;border-radius:11px;padding:10px 18px;font-size:14px;font-weight:600;transition:background .15s,transform .1s}.tcard .book:hover{background:var(--brand-deep)}.tcard .book:active{transform:scale(.97)}.quiz-progress{color:var(--text-soft);font-size:13px;font-weight:700}.quiz-timer{color:var(--danger);font-variant-numeric:tabular-nums;font-size:13px;font-weight:700}.quiz-option{text-align:left;border:2px solid var(--border);background:var(--surface);color:var(--text);cursor:pointer;border-radius:8px;padding:12px 16px;font-size:14px;transition:border-color .15s,background .15s}.quiz-option:hover{border-color:var(--primary)}.quiz-option.selected{border-color:var(--primary);background:var(--brand-soft);font-weight:600}.quiz-result-score h3{color:var(--primary)}.modal-overlay{z-index:50;background:#0f11178c;justify-content:center;align-items:center;padding:16px;display:flex;position:fixed;inset:0}.modal-box{background:var(--surface);border-radius:var(--radius);width:100%;max-width:440px;max-height:88vh;padding:22px;overflow-y:auto}.modal-box h3{margin-bottom:14px;font-size:18px}.modal-box textarea.input{resize:vertical;font-family:inherit}.topnav{z-index:40;background:color-mix(in srgb, var(--surface) 86%, transparent);-webkit-backdrop-filter:saturate(140%)blur(14px);border-bottom:1px solid var(--line);position:sticky;top:0}.topnav-inner{align-items:center;gap:22px;max-width:1240px;margin:0 auto;padding:10px 24px;display:flex}.topnav-brand{flex-shrink:0;align-items:center;display:flex}.topnav-brand img{width:auto;height:34px;display:block}.topnav-links{gap:2px;min-width:0;display:flex}.topnav-link{color:var(--ink-soft);white-space:nowrap;cursor:pointer;border-radius:10px;padding:8px 13px;font-size:14.5px;font-weight:600;transition:background .15s,color .15s}.topnav-link:hover{background:var(--surface-2);color:var(--ink)}.topnav-link.active{color:var(--brand);background:var(--brand-soft)}.topnav-right{align-items:center;gap:10px;margin-left:auto;display:flex}.topnav-search{background:var(--surface-2);border:1px solid var(--line);color:var(--ink-faint);border-radius:11px;align-items:center;gap:8px;width:210px;padding:8px 13px;font-size:14px;display:flex}.topnav-search input{color:var(--ink);background:0 0;border:none;outline:none;width:100%;min-width:0;font-family:inherit;font-size:14px}.topnav-iconbtn{border:1px solid var(--line);background:var(--surface-2);width:38px;height:38px;color:var(--ink-soft);cursor:pointer;border-radius:10px;flex-shrink:0;place-items:center;font-size:16px;transition:background .15s,color .15s;display:grid}.topnav-iconbtn:hover{background:var(--brand-soft);color:var(--brand)}.topnav-avatar{background:linear-gradient(135deg, var(--brand), var(--brand-2));color:#fff;cursor:pointer;border:none;border-radius:50%;flex-shrink:0;place-items:center;width:38px;height:38px;font-size:14px;font-weight:700;display:grid}.topnav-menu-wrap{position:relative}.topnav-menu{background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow);z-index:50;border-radius:14px;min-width:216px;padding:6px;position:absolute;top:calc(100% + 8px);right:0}.topnav-menu-header{border-bottom:1px solid var(--line);margin-bottom:6px;padding:8px 12px 10px}.topnav-menu-name{color:var(--ink);font-size:14px;font-weight:700}.topnav-menu-role{color:var(--ink-faint);margin-top:2px;font-size:12px}.topnav-menu a,.topnav-menu button{width:100%;color:var(--ink);cursor:pointer;text-align:left;background:0 0;border:none;border-radius:9px;align-items:center;gap:10px;padding:9px 12px;font-family:inherit;font-size:14px;font-weight:500;text-decoration:none;display:flex}.topnav-menu a:hover,.topnav-menu button:hover{background:var(--surface-2)}.topnav-menu .divider{background:var(--line);height:1px;margin:6px 4px}.topnav-menu .danger{color:var(--brand);font-weight:600}.topnav-login-btn{background:var(--brand);color:#fff;border-radius:11px;padding:9px 18px;font-size:14px;font-weight:700;text-decoration:none}.topnav-login-btn:hover{background:var(--brand-deep)}@media (width<=860px){.topnav-inner{gap:12px;padding:10px 14px}.topnav-search{display:none}.topnav-links{-ms-overflow-style:none;scrollbar-width:none;overflow-x:auto}.topnav-links::-webkit-scrollbar{display:none}}