:root{
  --bg:#f5f7fb;--panel:#ffffff;--text:#172033;--muted:#6b7280;--line:#e7eaf0;
  --primary:#4f46e5;--primary2:#7c3aed;--soft:#eef2ff;--success:#059669;--warning:#d97706;--danger:#dc2626;
  --shadow:0 18px 45px rgba(31,41,55,.08);--radius:18px;
}
*{box-sizing:border-box}html,body{margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--text);background:var(--bg);font-size:15px}a{color:inherit;text-decoration:none}button,input,textarea,select{font:inherit}.hidden{display:none!important}
.admin-shell{min-height:100vh}.sidebar{position:fixed;inset:0 auto 0 0;width:248px;background:#111827;color:#fff;padding:24px 18px;display:flex;flex-direction:column;z-index:30}.brand{display:flex;align-items:center;gap:12px;padding:0 8px 24px}.brand-mark{display:grid;place-items:center;width:42px;height:42px;border-radius:14px;background:linear-gradient(135deg,var(--primary),var(--primary2));font-weight:800;font-size:21px;box-shadow:0 10px 24px rgba(79,70,229,.35)}.brand strong,.brand small{display:block}.brand small{margin-top:3px;color:#9ca3af;font-size:12px}.side-nav{display:grid;gap:7px}.nav-link{display:flex;align-items:center;gap:12px;padding:12px 14px;border-radius:12px;color:#cbd5e1;transition:.2s}.nav-link:hover,.nav-link.active{background:rgba(255,255,255,.10);color:#fff}.nav-link.active{box-shadow:inset 3px 0 0 #818cf8}.nav-dot{width:8px;height:8px;border-radius:50%;background:#64748b}.nav-link.active .nav-dot{background:#a5b4fc;box-shadow:0 0 0 4px rgba(165,180,252,.12)}.sidebar-foot{margin-top:auto;border-top:1px solid rgba(255,255,255,.1);padding-top:18px}.admin-chip{display:flex;align-items:center;gap:10px}.avatar{display:grid;place-items:center;width:38px;height:38px;border-radius:12px;background:#374151;font-weight:700}.admin-chip strong,.admin-chip small{display:block}.admin-chip small{color:#9ca3af;font-size:12px;margin-top:2px}.logout-link{display:block;margin-top:14px;color:#fca5a5;font-size:13px}.main-panel{margin-left:248px;min-height:100vh}.topbar{height:88px;background:rgba(255,255,255,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);display:flex;align-items:center;gap:14px;padding:0 30px;position:sticky;top:0;z-index:20}.topbar h1{font-size:21px;margin:0}.topbar p{font-size:12px;color:var(--muted);margin:5px 0 0}.top-action{margin-left:auto}.menu-button{display:none;border:0;background:var(--soft);width:40px;height:40px;border-radius:12px;color:var(--primary);cursor:pointer}.content-wrap{padding:28px 30px 50px;max-width:1500px;margin:0 auto}.sidebar-overlay{display:none}
.grid{display:grid;gap:18px}.metrics{grid-template-columns:repeat(4,minmax(0,1fr));margin-bottom:22px}.metric-card,.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}.metric-card{padding:21px}.metric-card .metric-label{color:var(--muted);font-size:13px}.metric-card .metric-value{font-size:27px;font-weight:750;margin:10px 0 6px;letter-spacing:-.5px}.metric-card .metric-note{font-size:12px;color:var(--muted)}.metric-accent{height:4px;border-radius:99px;background:linear-gradient(90deg,var(--primary),var(--primary2));margin-top:14px}.card{padding:22px}.card-header{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:18px}.card-header h2,.card-header h3{font-size:17px;margin:0}.card-header p{margin:4px 0 0;color:var(--muted);font-size:12px}.two-col{grid-template-columns:minmax(0,1.45fr) minmax(300px,.75fr)}
.button{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:12px;padding:11px 16px;font-weight:650;cursor:pointer;transition:.2s;white-space:nowrap}.button:hover{transform:translateY(-1px)}.button-primary{color:#fff;background:linear-gradient(135deg,var(--primary),var(--primary2));box-shadow:0 10px 22px rgba(79,70,229,.22)}.button-ghost{background:var(--soft);color:var(--primary)}.button-danger{background:#fee2e2;color:var(--danger)}.button-success{background:#d1fae5;color:var(--success)}.button-small{padding:8px 11px;border-radius:9px;font-size:13px}.button:disabled{opacity:.55;cursor:not-allowed;transform:none}
.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.field{display:grid;gap:7px}.field.full{grid-column:1/-1}.field label{font-weight:650;font-size:13px}.field small{color:var(--muted);line-height:1.5}.input,.textarea,.select{width:100%;border:1px solid #d9dee8;background:#fff;color:var(--text);border-radius:12px;padding:12px 13px;outline:none;transition:.2s}.input:focus,.textarea:focus,.select:focus{border-color:#818cf8;box-shadow:0 0 0 4px rgba(99,102,241,.12)}.textarea{min-height:100px;resize:vertical}.switch-row{display:flex;align-items:center;gap:10px}.checkbox{width:18px;height:18px;accent-color:var(--primary)}
.alert{border-radius:13px;padding:13px 15px;margin-bottom:18px;border:1px solid transparent}.alert-success{background:#ecfdf5;color:#047857;border-color:#a7f3d0}.alert-warning{background:#fffbeb;color:#b45309;border-color:#fde68a}.alert-danger{background:#fef2f2;color:#b91c1c;border-color:#fecaca}.alert-info{background:#eff6ff;color:#1d4ed8;border-color:#bfdbfe}
.table-wrap{overflow:auto;border:1px solid var(--line);border-radius:14px}.table{width:100%;border-collapse:collapse;min-width:780px}.table th,.table td{text-align:left;padding:13px 14px;border-bottom:1px solid var(--line);vertical-align:middle}.table th{font-size:12px;color:var(--muted);background:#fafbfc;font-weight:700}.table tr:last-child td{border-bottom:0}.table td{font-size:13px}.status{display:inline-flex;align-items:center;gap:6px;padding:5px 9px;border-radius:999px;font-size:12px;font-weight:650}.status-active{background:#d1fae5;color:#047857}.status-disabled{background:#f3f4f6;color:#6b7280}.status-dot{width:7px;height:7px;border-radius:50%;background:currentColor}.actions{display:flex;gap:7px;flex-wrap:wrap}.empty{text-align:center;padding:48px 20px;color:var(--muted)}
.bar-chart{height:240px;display:flex;align-items:flex-end;gap:10px;padding:20px 4px 4px;border-bottom:1px solid var(--line)}.bar-item{flex:1;min-width:22px;height:100%;display:flex;align-items:flex-end;position:relative}.bar{width:100%;min-height:4px;background:linear-gradient(180deg,#8b5cf6,#4f46e5);border-radius:8px 8px 3px 3px;position:relative}.bar:hover:after{content:attr(data-label);position:absolute;left:50%;bottom:calc(100% + 8px);transform:translateX(-50%);background:#111827;color:#fff;font-size:11px;padding:6px 8px;border-radius:7px;white-space:nowrap;z-index:3}.bar-labels{display:flex;gap:10px;margin-top:9px}.bar-labels span{flex:1;text-align:center;font-size:11px;color:var(--muted);min-width:22px}.rank-list{display:grid;gap:12px}.rank-item{display:grid;grid-template-columns:28px 1fr auto;gap:10px;align-items:center}.rank-number{width:28px;height:28px;border-radius:9px;display:grid;place-items:center;background:var(--soft);color:var(--primary);font-weight:750;font-size:12px}.rank-title{min-width:0}.rank-title strong,.rank-title small{display:block}.rank-title strong{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-size:13px}.rank-title small{color:var(--muted);margin-top:3px;font-size:11px}.rank-value{font-weight:700;font-size:13px}
.upload-zone{border:2px dashed #c7d2fe;background:#f8faff;border-radius:18px;padding:42px 20px;text-align:center;cursor:pointer;transition:.2s}.upload-zone.dragging,.upload-zone:hover{border-color:var(--primary);background:#eef2ff}.upload-icon{width:62px;height:62px;margin:0 auto 14px;border-radius:20px;display:grid;place-items:center;background:linear-gradient(135deg,var(--primary),var(--primary2));color:#fff;font-size:28px;box-shadow:0 14px 30px rgba(79,70,229,.22)}.upload-zone h3{margin:0 0 7px;font-size:17px}.upload-zone p{margin:0;color:var(--muted);font-size:13px}.file-picked{margin-top:14px;padding:12px 14px;background:#fff;border:1px solid var(--line);border-radius:12px;display:none;text-align:left}.progress-shell{height:12px;background:#e5e7eb;border-radius:99px;overflow:hidden;margin-top:14px}.progress-bar{height:100%;width:0;background:linear-gradient(90deg,var(--primary),var(--primary2));transition:width .2s}.progress-text{display:flex;justify-content:space-between;color:var(--muted);font-size:12px;margin-top:7px}
.toolbar{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-bottom:16px}.toolbar .input,.toolbar .select{width:auto;min-width:180px}.pagination{display:flex;gap:7px;justify-content:flex-end;margin-top:18px}.page-link{padding:8px 11px;border:1px solid var(--line);background:#fff;border-radius:9px;color:var(--muted)}.page-link.active{background:var(--primary);color:#fff;border-color:var(--primary)}
.login-page,.install-page,.public-page{min-height:100vh;background:radial-gradient(circle at 20% 10%,rgba(99,102,241,.18),transparent 34%),radial-gradient(circle at 90% 80%,rgba(124,58,237,.15),transparent 32%),#f7f8fc;display:grid;place-items:center;padding:24px}.auth-card{width:min(100%,460px);background:#fff;border:1px solid rgba(255,255,255,.8);border-radius:24px;box-shadow:0 25px 70px rgba(31,41,55,.14);padding:32px}.auth-brand{display:flex;align-items:center;gap:12px;margin-bottom:26px}.auth-brand .brand-mark{flex:0 0 auto;color:#fff}.auth-card h1{font-size:24px;margin:0 0 8px}.auth-card>p{color:var(--muted);margin:0 0 24px;line-height:1.7}.auth-card .field{margin-bottom:15px}.auth-foot{text-align:center;color:var(--muted);font-size:12px;margin-top:20px}
.install-shell{width:min(100%,820px)}.install-card{background:#fff;border-radius:24px;box-shadow:0 25px 70px rgba(31,41,55,.12);overflow:hidden;border:1px solid rgba(255,255,255,.9)}.install-head{padding:28px 30px;background:linear-gradient(135deg,#312e81,#6d28d9);color:#fff}.install-head h1{margin:0;font-size:24px}.install-head p{margin:8px 0 0;color:#ddd6fe}.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-top:22px}.step{padding:9px 10px;border-radius:10px;background:rgba(255,255,255,.10);font-size:12px;text-align:center;color:#c4b5fd}.step.active,.step.done{background:#fff;color:#4f46e5;font-weight:700}.install-body{padding:28px 30px}.check-list{display:grid;gap:10px}.check-item{display:flex;justify-content:space-between;align-items:center;padding:13px 14px;border:1px solid var(--line);border-radius:12px}.check-item span:last-child{font-weight:700}.check-ok{color:var(--success)}.check-bad{color:var(--danger)}.install-actions{display:flex;justify-content:space-between;gap:12px;margin-top:24px}.code-box{background:#111827;color:#d1d5db;border-radius:14px;padding:15px;overflow:auto;font-family:Consolas,monospace;font-size:12px;line-height:1.7}
.video-card-public{width:min(100%,980px);background:#0b1020;border-radius:24px;overflow:hidden;box-shadow:0 30px 80px rgba(15,23,42,.28);color:#fff}.video-stage{background:#000;aspect-ratio:16/9}.video-stage video{width:100%;height:100%;display:block}.video-info{padding:22px 24px}.video-info h1{font-size:21px;margin:0 0 8px}.video-info p{margin:0;color:#94a3b8;line-height:1.65}.video-meta{display:flex;gap:14px;flex-wrap:wrap;margin-top:14px;color:#94a3b8;font-size:12px}
.note{font-size:12px;line-height:1.7;color:var(--muted)}.danger-zone{border-color:#fecaca;background:#fffafa}.mono{font-family:Consolas,Monaco,monospace}.muted{color:var(--muted)}
@media(max-width:1100px){.metrics{grid-template-columns:repeat(2,minmax(0,1fr))}.two-col{grid-template-columns:1fr}}
@media(max-width:760px){.sidebar{transform:translateX(-100%);transition:.25s}.sidebar.open{transform:translateX(0)}.sidebar-overlay.show{display:block;position:fixed;inset:0;background:rgba(15,23,42,.45);z-index:25}.main-panel{margin-left:0}.menu-button{display:block}.topbar{padding:0 16px;height:78px}.top-action{display:none}.content-wrap{padding:18px 14px 36px}.metrics{grid-template-columns:1fr 1fr;gap:12px}.metric-card{padding:16px}.metric-card .metric-value{font-size:21px}.form-grid{grid-template-columns:1fr}.field.full{grid-column:auto}.card{padding:17px}.steps{grid-template-columns:1fr 1fr}.install-head,.install-body{padding:22px 18px}.install-actions{flex-direction:column-reverse}.install-actions .button{width:100%}.toolbar .input,.toolbar .select{width:100%;min-width:0}.auth-card{padding:25px 20px}.bar-chart{gap:6px}.bar-labels{gap:6px}.bar-labels span:nth-child(even){display:none}}
.status-pending{background:#fff7ed;color:#c2410c}.status-processing{background:#eef2ff;color:#4f46e5}.status-ready{background:#d1fae5;color:#047857}.status-failed{background:#fee2e2;color:#b91c1c}.mini-progress{height:7px;background:#e5e7eb;border-radius:99px;overflow:hidden;margin:8px 0 4px;width:150px}.mini-progress span{display:block;height:100%;background:linear-gradient(90deg,var(--primary),var(--primary2));border-radius:99px}.error-text{max-width:220px;margin-top:7px;color:var(--danger);font-size:11px;line-height:1.5}.player-error{position:absolute;inset:auto 18px 18px;background:rgba(127,29,29,.92);color:#fff;padding:12px 14px;border-radius:12px}.video-stage{position:relative}