:root{--bg: #faf7fc;--bg-soft: linear-gradient(145deg, #fff5f8 0%, #f8f4ff 45%, #f3f8ff 100%);--sidebar: rgba(255, 255, 255, .82);--card: #ffffff;--card-border: rgba(200, 170, 210, .22);--text: #3d3550;--text-soft: #6b6280;--muted: #9a92a8;--accent: #d946a8;--accent-soft: #f0abfc;--accent-2: #a78bfa;--accent-3: #f9a8d4;--mint: #6ee7b7;--peach: #fdba74;--sky: #7dd3fc;--success: #34d399;--warning: #fbbf24;--danger: #f472b6;--radius: 20px;--radius-sm: 14px;--shadow: 0 8px 32px rgba(180, 140, 200, .12);--shadow-sm: 0 4px 16px rgba(180, 140, 200, .08)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:Noto Sans SC,-apple-system,BlinkMacSystemFont,PingFang SC,Microsoft YaHei,sans-serif;background:var(--bg-soft);background-attachment:fixed;color:var(--text);min-height:100vh;-webkit-font-smoothing:antialiased}body:before{content:"";position:fixed;top:0;right:0;bottom:0;left:0;background:radial-gradient(ellipse 60% 50% at 10% 10%,rgba(249,168,212,.18),transparent 55%),radial-gradient(ellipse 50% 40% at 90% 20%,rgba(167,139,250,.14),transparent 50%),radial-gradient(ellipse 40% 35% at 70% 90%,rgba(125,211,252,.12),transparent 45%);pointer-events:none;z-index:0}a{color:inherit;text-decoration:none}.admin-shell{display:flex;min-height:100vh;position:relative;z-index:1}.admin-sidebar{width:240px;background:var(--sidebar);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-right:1px solid var(--card-border);box-shadow:var(--shadow-sm);padding:28px 18px;display:flex;flex-direction:column;position:fixed;top:0;left:0;bottom:0;z-index:10}.admin-brand-wrap{padding:4px 8px 24px;border-bottom:1px solid var(--card-border);margin-bottom:20px}.admin-brand{font-size:20px;font-weight:700;letter-spacing:.02em;background:linear-gradient(120deg,#db2777,#a855f7,#ec4899);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.admin-brand-sub{font-size:11px;color:var(--muted);margin-top:6px;letter-spacing:.12em;text-transform:uppercase}.admin-nav{display:flex;flex-direction:column;gap:6px;flex:1;min-height:0;overflow-y:auto;padding-right:4px;margin-right:-4px}.admin-nav a{display:flex;align-items:center;gap:10px;padding:12px 14px;border-radius:var(--radius-sm);color:var(--text-soft);font-size:14px;font-weight:500;transition:all .2s ease}.admin-nav a .nav-icon{width:28px;height:28px;display:flex;align-items:center;justify-content:center;border-radius:10px;background:#fff9;font-size:14px;transition:transform .2s ease}.admin-nav a:hover{background:#ffffffbf;color:var(--text);transform:translate(2px)}.admin-nav a.active{background:linear-gradient(135deg,#f9a8d459,#a78bfa47);color:#7c3aed;box-shadow:var(--shadow-sm)}.admin-nav a.active .nav-icon{background:#fff;transform:scale(1.05)}.admin-sidebar .btn-ghost{margin-top:12px;width:100%}.admin-main{flex:1;margin-left:240px;padding:32px 36px 48px;min-width:0}.admin-header{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:28px;flex-wrap:wrap;gap:16px}.admin-header h1{font-size:28px;font-weight:700;color:var(--text);letter-spacing:-.02em}.admin-header-sub{font-size:13px;color:var(--muted);margin-top:6px;font-weight:400}.admin-header-actions{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.date-range{display:flex;gap:8px;align-items:center;background:#ffffffbf;padding:6px 12px;border-radius:999px;border:1px solid var(--card-border);box-shadow:var(--shadow-sm)}.date-range span{color:var(--muted);font-size:13px}.date-range input{background:transparent;border:none;color:var(--text);padding:6px 4px;font-size:13px;font-family:inherit}.date-range input:focus{outline:none}.btn{background:linear-gradient(135deg,#ec4899,#a855f7);color:#fff;border:none;padding:10px 20px;border-radius:999px;cursor:pointer;font-size:13px;font-weight:600;font-family:inherit;box-shadow:0 4px 14px #d946a847;transition:transform .15s ease,box-shadow .15s ease}.btn:hover{transform:translateY(-1px);box-shadow:0 6px 20px #d946a859}.btn:disabled{opacity:.6;cursor:not-allowed;transform:none}.btn-ghost{background:#fffc;border:1px solid var(--card-border);color:var(--text-soft);box-shadow:none}.btn-ghost:hover{background:#fff;color:var(--text);box-shadow:var(--shadow-sm)}.stat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(168px,1fr));gap:16px;margin-bottom:28px}.stat-card{background:var(--card);border:1px solid var(--card-border);border-radius:var(--radius);padding:18px 18px 16px;box-shadow:var(--shadow-sm);position:relative;overflow:hidden;transition:transform .2s ease,box-shadow .2s ease}.stat-card:before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--stat-accent, linear-gradient(90deg, #f9a8d4, #c084fc))}.stat-card:hover{transform:translateY(-2px);box-shadow:var(--shadow)}.stat-card:nth-child(6n+1){--stat-accent: linear-gradient(90deg, #f9a8d4, #fbcfe8)}.stat-card:nth-child(6n+2){--stat-accent: linear-gradient(90deg, #c4b5fd, #ddd6fe)}.stat-card:nth-child(6n+3){--stat-accent: linear-gradient(90deg, #7dd3fc, #bae6fd)}.stat-card:nth-child(6n+4){--stat-accent: linear-gradient(90deg, #fcd34d, #fde68a)}.stat-card:nth-child(6n+5){--stat-accent: linear-gradient(90deg, #6ee7b7, #a7f3d0)}.stat-card:nth-child(6n+6){--stat-accent: linear-gradient(90deg, #fda4af, #fecdd3)}.stat-card .label{font-size:12px;color:var(--muted);margin-bottom:8px;font-weight:500}.stat-card .value{font-size:28px;font-weight:700;line-height:1.1;color:var(--text);letter-spacing:-.02em}.stat-card 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h3{font-size:15px;font-weight:600;margin-bottom:16px;color:var(--text)}.rank-list{list-style:none}.rank-list li{display:flex;justify-content:space-between;align-items:center;padding:12px 14px;margin-bottom:8px;border-radius:var(--radius-sm);background:#f8f4fccc;font-size:14px;border:none}.rank-list li:last-child{margin-bottom:0}.rank-list .rank-num{display:inline-flex;align-items:center;justify-content:center;width:24px;height:24px;margin-right:8px;border-radius:8px;background:linear-gradient(135deg,#ec489926,#a78bfa26);color:#a855f7;font-size:11px;font-weight:700}.loading,.empty-tip{text-align:center;padding:64px 24px;color:var(--muted);font-size:14px}.loading:after{content:" …";animation:pulse 1.2s infinite}@keyframes pulse{0%,to{opacity:.4}50%{opacity:1}}.error-box{text-align:center;padding:16px 20px;margin-bottom:20px;color:#be185d;background:#fbcfe880;border:1px solid rgba(244,114,182,.3);border-radius:var(--radius-sm);font-size:14px}.note-banner{background:linear-gradient(135deg,#e0f2fee6,#fae8ffe6);border:1px solid rgba(167,139,250,.25);color:#7c3aed;padding:14px 18px;border-radius:var(--radius-sm);font-size:13px;line-height:1.6;margin-bottom:24px}.login-page{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px;position:relative;z-index:1}.login-card{width:100%;max-width:420px;background:#ffffffe0;-webkit-backdrop-filter:blur(24px);backdrop-filter:blur(24px);border:1px solid var(--card-border);border-radius:28px;padding:40px 36px;box-shadow:var(--shadow)}.login-emoji{font-size:40px;margin-bottom:12px}.login-card h1{font-size:26px;font-weight:700;margin-bottom:8px;background:linear-gradient(120deg,#db2777,#9333ea);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.login-card p{color:var(--text-soft);font-size:14px;line-height:1.6;margin-bottom:28px}.login-tabs{display:flex;gap:8px;margin-bottom:22px;background:#f8f4fccc;padding:4px;border-radius:999px}.login-tabs button{flex:1;padding:10px;border-radius:999px;border:none;background:transparent;color:var(--muted);cursor:pointer;font-size:13px;font-weight:500;font-family:inherit;transition:all .2s ease}.login-tabs button.active{background:#fff;color:#9333ea;box-shadow:var(--shadow-sm)}.login-card input{width:100%;background:#ffffffe6;border:1px solid var(--card-border);color:var(--text);padding:14px 16px;border-radius:var(--radius-sm);margin-bottom:18px;font-size:14px;font-family:inherit;transition:border-color .2s,box-shadow .2s}.login-card input:focus{outline:none;border-color:#a78bfa99;box-shadow:0 0 0 4px #a78bfa1f}.login-card .btn{width:100%;padding:14px;font-size:15px}.login-error{color:#be185d;font-size:13px;margin-bottom:14px;padding:10px 14px;background:#fbcfe880;border-radius:10px}.chart-card h3{margin-bottom:6px}.chart-desc{font-size:12px;color:var(--muted);line-height:1.5;margin-bottom:12px}.section-title{font-size:15px;font-weight:600;color:var(--text-soft);margin:8px 0 16px}.subsection-title{font-size:14px;font-weight:600;color:var(--text-soft);margin:20px 0 12px}.section-hint{margin-bottom:20px}.section-hint a{color:#9333ea;text-decoration:underline}.chart-empty{margin-top:8px;font-size:12px;color:var(--muted);text-align:center}.filter-row{margin-bottom:20px}.filter-label{display:block;font-size:13px;color:var(--muted);margin-bottom:10px}.metric-tabs{display:flex;flex-wrap:wrap;gap:8px}.metric-tab{padding:8px 14px;border-radius:999px;border:1px solid var(--card-border);background:#ffffffbf;color:var(--text-soft);font-size:13px;cursor:pointer;font-family:inherit;transition:all .2s ease}.metric-tab.active{background:linear-gradient(135deg,#f9a8d4,#a78bfa);color:#fff;border-color:transparent}.stat-card-link{display:block;transition:transform .15s ease,box-shadow .15s ease}.stat-card-link:hover{transform:translateY(-2px);box-shadow:var(--shadow)}.hint-text{margin-top:16px;font-size:13px;color:var(--muted);line-height:1.6}.moderation-table table{width:100%;border-collapse:collapse;font-size:13px}.moderation-table th,.moderation-table td{padding:10px 8px;border-bottom:1px solid var(--card-border);text-align:left;vertical-align:top}.moderation-table th{color:var(--muted);font-weight:500}.cell-detail{max-width:220px;word-break:break-word}.cell-actions{display:flex;flex-wrap:wrap;gap:6px}.btn-sm{padding:6px 10px;font-size:12px}.chart-card-wide{grid-column:1 / -1}.cohort-table{width:100%;border-collapse:collapse;font-size:13px}.cohort-table th,.cohort-table td{padding:10px 12px;text-align:left;border-bottom:1px solid var(--card-border)}.cohort-table th{color:var(--muted);font-weight:600;font-size:12px}.cell-mono{font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;font-size:12px;color:var(--text-soft)}.data-table tbody tr:hover{background:#f9a8d40f}.quick-range-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:20px}.quick-range-btn{border:1px solid var(--card-border);background:#ffffffb8;color:var(--text-soft);border-radius:999px;padding:8px 16px;font-size:13px;font-weight:600;cursor:pointer;transition:all .2s ease}.quick-range-btn:hover,.quick-range-btn.active{color:#7c3aed;border-color:#a78bfa73;background:linear-gradient(135deg,#f9a8d438,#a78bfa2e)}.table-scroll{overflow-x:auto}@media (max-width: 900px){.admin-sidebar{display:none}.admin-main{margin-left:0;padding:20px 16px 32px}.chart-grid{grid-template-columns:1fr}.admin-header h1{font-size:22px}}