.app-header[data-v-532c7ff1]{position:sticky;top:0;z-index:50;height:64px;background:color-mix(in srgb,var(--bg-elevated) 88%,transparent);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid var(--border)}.header-inner[data-v-532c7ff1]{height:100%;display:flex;align-items:center;gap:28px}.brand[data-v-532c7ff1]{display:flex;align-items:baseline;gap:8px;cursor:pointer;-webkit-user-select:none;user-select:none}.brand-mark[data-v-532c7ff1]{font-size:22px;font-weight:800;letter-spacing:2px;background:linear-gradient(120deg,var(--accent),#a978ff);-webkit-background-clip:text;background-clip:text;color:transparent}.brand-sub[data-v-532c7ff1]{font-size:13px;color:var(--text-muted)}.nav[data-v-532c7ff1]{display:flex;align-items:center;gap:4px;flex:1}.nav-item[data-v-532c7ff1]{padding:7px 14px;border-radius:8px;font-size:14.5px;color:var(--text-secondary);cursor:pointer;transition:all .15s ease}.nav-item[data-v-532c7ff1]:hover{color:var(--text-primary);background:var(--bg-hover)}.nav-item.active[data-v-532c7ff1]{color:var(--accent);background:var(--accent-soft)}.header-right[data-v-532c7ff1]{display:flex;align-items:center;gap:12px}.icon-btn[data-v-532c7ff1]{width:38px;height:38px;border-radius:10px;border:1px solid var(--border);background:transparent;color:var(--text-secondary);font-size:16px;display:inline-flex;align-items:center;justify-content:center;transition:all .15s ease}.icon-btn[data-v-532c7ff1]:hover{border-color:var(--accent);color:var(--accent)}.user-chip[data-v-532c7ff1]{padding:7px 14px;border-radius:999px;background:var(--accent-soft);color:var(--accent);font-size:13.5px;cursor:pointer;max-width:140px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.menu-toggle[data-v-532c7ff1]{display:none}@media (max-width: 820px){.nav[data-v-532c7ff1]{position:absolute;top:64px;left:0;right:0;flex-direction:column;align-items:stretch;background:var(--bg-elevated);border-bottom:1px solid var(--border);padding:8px 16px;gap:2px;display:none}.nav.open[data-v-532c7ff1]{display:flex}.menu-toggle[data-v-532c7ff1]{display:inline-flex}}:root,:root[data-theme=dark]{--bg-base: #0e1116;--bg-elevated: #161b22;--bg-card: #1a2029;--bg-hover: #222a35;--bg-input: #10151c;--border: #262d38;--border-strong: #333c49;--text-primary: #e6edf3;--text-secondary: #9aa7b6;--text-muted: #6b7684;--accent: #4f9dff;--accent-soft: rgba(79, 157, 255, .14);--accent-strong: #2f7de0;--success: #35c07a;--success-soft: rgba(53, 192, 122, .14);--danger: #f2555a;--danger-soft: rgba(242, 85, 90, .14);--warning: #f0a742;--warning-soft: rgba(240, 167, 66, .14);--shadow: 0 8px 30px rgba(0, 0, 0, .35);--shadow-sm: 0 2px 10px rgba(0, 0, 0, .25);--radius: 14px;--radius-sm: 10px}:root[data-theme=light]{--bg-base: #f5f6f8;--bg-elevated: #ffffff;--bg-card: #ffffff;--bg-hover: #eef1f5;--bg-input: #f0f2f5;--border: #e3e7ee;--border-strong: #d3d9e2;--text-primary: #1c222b;--text-secondary: #566072;--text-muted: #8a93a2;--accent: #2f7de0;--accent-soft: rgba(47, 125, 224, .1);--accent-strong: #1f66c4;--success: #1a9e5f;--success-soft: rgba(26, 158, 95, .1);--danger: #d93a40;--danger-soft: rgba(217, 58, 64, .1);--warning: #d98a1f;--warning-soft: rgba(217, 138, 31, .1);--shadow: 0 8px 30px rgba(30, 40, 60, .08);--shadow-sm: 0 2px 10px rgba(30, 40, 60, .06);--radius: 14px;--radius-sm: 10px}*{box-sizing:border-box;margin:0;padding:0}html,body{height:100%}body{font-family:PingFang SC,Microsoft YaHei,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg-base);color:var(--text-primary);line-height:1.7;font-size:15px;-webkit-font-smoothing:antialiased;transition:background .3s ease,color .3s ease}a{color:inherit;text-decoration:none}button{font-family:inherit;cursor:pointer}.container{max-width:1180px;margin:0 auto;padding:0 24px}.container-narrow{max-width:860px;margin:0 auto;padding:0 24px}.page{min-height:calc(100vh - 64px);padding:32px 0 64px}.card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease}.card-hover:hover{border-color:var(--accent);transform:translateY(-3px);box-shadow:var(--shadow)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:9px 18px;border:1px solid var(--border-strong);border-radius:var(--radius-sm);background:transparent;color:var(--text-primary);font-size:14px;transition:all .18s ease}.btn:hover{background:var(--bg-hover);border-color:var(--accent)}.btn-primary{background:var(--accent);border-color:var(--accent);color:#fff}.btn-primary:hover{background:var(--accent-strong);border-color:var(--accent-strong)}.btn-ghost{border-color:transparent;color:var(--text-secondary)}.btn-block{width:100%}.btn-lg{padding:12px 26px;font-size:15px}.btn:disabled{opacity:.5;cursor:not-allowed}.tag{display:inline-flex;align-items:center;padding:2px 10px;border-radius:999px;font-size:12px;line-height:1.8;background:var(--bg-hover);color:var(--text-secondary)}.tag-accent{background:var(--accent-soft);color:var(--accent)}.tag-success{background:var(--success-soft);color:var(--success)}.tag-danger{background:var(--danger-soft);color:var(--danger)}.tag-warning{background:var(--warning-soft);color:var(--warning)}.input,.textarea{width:100%;padding:11px 14px;background:var(--bg-input);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text-primary);font-size:14px;outline:none;transition:border-color .18s ease}.input:focus,.textarea:focus{border-color:var(--accent)}.textarea{resize:vertical;min-height:110px;line-height:1.7}.text-secondary{color:var(--text-secondary)}.text-muted{color:var(--text-muted)}.text-accent{color:var(--accent)}.text-center{text-align:center}.section-title{font-size:20px;font-weight:700;letter-spacing:.5px}.grid{display:grid;gap:18px}.grid-2{grid-template-columns:repeat(2,1fr)}.grid-3{grid-template-columns:repeat(3,1fr)}.grid-4{grid-template-columns:repeat(4,1fr)}@media (max-width: 900px){.grid-3,.grid-4{grid-template-columns:repeat(2,1fr)}}@media (max-width: 600px){.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}.container,.container-narrow{padding:0 16px}}.katex{font-size:1.02em}.formula-block{overflow-x:auto;padding:6px 0}.loading,.empty{text-align:center;color:var(--text-muted);padding:60px 0;font-size:14px}::-webkit-scrollbar{width:10px;height:10px}::-webkit-scrollbar-thumb{background:var(--border-strong);border-radius:6px}::-webkit-scrollbar-track{background:transparent}.fade-enter-active,.fade-leave-active{transition:opacity .25s ease}.fade-enter-from,.fade-leave-to{opacity:0}