:root{--bg:#070b14;--surface:#0e1625;--surface2:#131f31;--line:#213451;--text:#e7eef8;--muted:#8292aa;--primary:#00d4ff;--primary2:#0b91b8;--success:#24d18f;--warning:#f5b942;--danger:#ff647c;--radius:14px}*{box-sizing:border-box}html{color-scheme:dark}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",sans-serif;font-size:14px}a{color:var(--primary);text-decoration:none}button,.button,input,select,textarea{font:inherit}.app{min-height:100vh}.sidebar{position:fixed;inset:0 auto 0 0;width:240px;background:#0a111e;border-right:1px solid var(--line);padding:22px 16px;display:flex;flex-direction:column;z-index:50}.logo{display:flex;gap:12px;align-items:center;color:#fff;font-weight:700;font-size:16px;padding:0 10px 28px}.logo>span,.brand-mark{display:grid;place-items:center;width:38px;height:38px;border-radius:11px;background:linear-gradient(135deg,var(--primary),#765cff);color:#06111a;font-weight:900}.logo small{display:block;color:var(--muted);font-size:11px;font-weight:400;margin-top:3px}.sidebar nav{display:grid;gap:7px}.nav-item{padding:12px 14px;border-radius:10px;color:#aebbd0}.nav-item:hover,.nav-item.active{background:#11243a;color:#fff}.nav-item.active{box-shadow:inset 3px 0 var(--primary)}.sidebar-foot{margin-top:auto;padding:16px 10px 0;border-top:1px solid var(--line);display:flex;justify-content:space-between;color:var(--muted)}.text-button{border:0;background:none;color:var(--primary);cursor:pointer}.main{margin-left:240px;min-width:0}.topbar{height:86px;padding:20px 28px;border-bottom:1px solid var(--line);background:rgba(7,11,20,.9);display:flex;align-items:center;gap:14px;position:sticky;top:0;z-index:30;backdrop-filter:blur(12px)}h1,h2,h3,p{margin-top:0}.topbar h1{font-size:22px;margin:0}.content{padding:26px;max-width:1560px;margin:auto}.muted{color:var(--muted)}.menu-toggle{display:none}.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);margin-bottom:20px;overflow:hidden}.panel-head{display:flex;align-items:center;justify-content:space-between;padding:17px 20px;border-bottom:1px solid var(--line)}.panel-head h2{font-size:16px;margin:0}.toolbar,.filters,.form-panel{padding:18px 20px}.toolbar{display:flex;gap:12px;align-items:end;flex-wrap:wrap}.segmented{display:flex}.segmented button{border-radius:0;border-right:0}.segmented button:first-child{border-radius:9px 0 0 9px}.segmented button:last-child{border-radius:0 9px 9px 0;border-right:1px solid var(--line)}button,.button{border:1px solid var(--line);background:var(--surface2);color:var(--text);padding:9px 14px;border-radius:9px;cursor:pointer;display:inline-flex;align-items:center;justify-content:center}.primary,.segmented .active{background:linear-gradient(135deg,#078baa,var(--primary2));border-color:#21bedf;color:#fff}.secondary{background:#17253a}.danger{background:#3d1824;border-color:#713044;color:#ff9bab}.button{color:var(--text)}button:disabled{opacity:.45;cursor:not-allowed}label{display:grid;gap:7px;color:#afbdd0;font-size:12px}input,select,textarea,.rich-editor{width:100%;background:#09111e;border:1px solid #263b59;color:var(--text);border-radius:9px;padding:10px 12px;outline:0}input:focus,select:focus,textarea:focus,.rich-editor:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(0,212,255,.1)}.filters{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:14px;align-items:end}.filter-actions{display:flex;gap:8px}.metric-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:15px;margin-bottom:20px}.metric{background:linear-gradient(145deg,var(--surface),#101d2e);border:1px solid var(--line);border-radius:var(--radius);padding:18px}.metric span{display:block;color:var(--muted);font-size:12px}.metric strong{display:block;font-size:28px;margin-top:8px}.metric small{display:block;margin-top:6px;color:var(--muted)}.metric small.up{color:var(--success)}.metric small.down{color:var(--danger)}.compact{grid-template-columns:repeat(2,minmax(180px,260px))}.two-cols{display:grid;grid-template-columns:1fr 1fr;gap:20px}.table-scroll{overflow:auto}table{width:100%;border-collapse:collapse;min-width:680px}th,td{padding:12px 15px;text-align:left;border-bottom:1px solid #18283d;vertical-align:top}th{font-size:11px;color:var(--muted);background:#0b1320;white-space:nowrap}td{max-width:320px}td small{display:block;color:var(--muted);margin-top:5px}.truncate{display:block;max-width:260px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.actions{display:flex;gap:8px;white-space:nowrap}.badge{display:inline-block;padding:3px 8px;border-radius:99px;background:#283448;color:#b7c2d0;font-size:11px}.badge.success{background:#123b30;color:#56e8ae}.badge.warning{background:#463617;color:#ffd371}.wechat-note,.notice{padding:12px 15px;border:1px solid #4c3e20;background:#2d2617;color:#f3d58e;border-radius:10px;margin-bottom:18px}.notice.error,.state.error{border-color:#6f2f40;background:#321822;color:#ff9daf}.state{text-align:center;padding:36px;color:var(--muted)}.pagination{display:flex;justify-content:center;align-items:center;gap:8px;padding:16px}.page-actions{display:flex;justify-content:flex-end;margin-bottom:16px}.chart{display:flex;align-items:end;gap:7px;height:230px;padding:25px 20px 40px;overflow-x:auto}.chart-column{min-width:32px;flex:1;height:100%;display:flex;gap:3px;align-items:end;position:relative}.chart-bar{flex:1;min-height:2px;border-radius:4px 4px 0 0;background:var(--primary)}.chart-bar.sessions{background:#765cff}.chart-label{position:absolute;top:calc(100% + 7px);left:50%;transform:translateX(-50%);font-size:9px;color:var(--muted);white-space:nowrap}.chart-tip{position:absolute;bottom:calc(100% + 5px);left:50%;transform:translateX(-50%);display:none;background:#02060d;padding:6px 8px;border-radius:6px;font-size:10px;white-space:nowrap;z-index:3}.chart-column:hover .chart-tip{display:block}.session-detail td{background:#09121f;padding:0}.session-pages{padding:14px 20px}.session-page{display:grid;grid-template-columns:160px 1fr 90px;gap:12px;padding:8px 0;border-bottom:1px dashed var(--line)}.editor-form{padding-bottom:75px}.form-panel{display:grid;gap:16px}.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.editor-toolbar{display:flex;gap:7px;flex-wrap:wrap}.rich-editor{min-height:420px;line-height:1.8}.rich-editor img,.rich-editor video{max-width:100%;height:auto}.upload-row{display:grid;grid-template-columns:1fr auto;gap:8px}.upload-row input[type=file]{max-width:240px}.upload-button input{display:none}.sticky-actions{position:fixed;bottom:0;right:0;left:240px;background:rgba(7,11,20,.95);border-top:1px solid var(--line);padding:12px 28px;display:flex;justify-content:flex-end;gap:10px;z-index:20}details summary{cursor:pointer;font-weight:600}dialog{width:min(520px,92vw);background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);color:var(--text);padding:0}dialog::backdrop{background:rgba(0,0,0,.7)}dialog form{padding:20px}.stack{display:grid;gap:16px}.dialog-head{display:flex;justify-content:space-between;align-items:center}.dialog-head h2{margin:0}.dialog-close{font-size:20px;padding:5px 10px}.check{display:flex;align-items:center;gap:8px}.check input{width:auto}.login-shell{min-height:100vh;display:grid;place-items:center;padding:20px;background:radial-gradient(circle at 50% 20%,#13253c 0,var(--bg) 48%)}.login-card{width:min(420px,100%);padding:34px;background:rgba(14,22,37,.94);border:1px solid var(--line);border-radius:20px;box-shadow:0 25px 80px rgba(0,0,0,.45)}.login-card .brand-mark{margin-bottom:22px}.login-card h1{font-size:22px;margin-bottom:8px}.toast{position:fixed;right:22px;bottom:22px;background:#11243a;border:1px solid var(--primary);padding:12px 16px;border-radius:10px;transform:translateY(120px);opacity:0;transition:.25s;z-index:100}.toast.show{transform:none;opacity:1}@media(max-width:1050px){.two-cols{grid-template-columns:1fr}.sidebar{transform:translateX(-100%);transition:.2s}.app.menu-open .sidebar{transform:none}.main{margin-left:0}.sticky-actions{left:0}.menu-toggle{display:inline-flex}.content{padding:18px}.topbar{padding:18px}}@media(max-width:640px){.content{padding:12px}.topbar{height:74px}.topbar h1{font-size:19px}.metric-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:9px}.metric{padding:13px}.metric strong{font-size:22px}.compact{grid-template-columns:1fr 1fr}.form-grid{grid-template-columns:1fr}.segmented{width:100%;overflow-x:auto}.segmented button{white-space:nowrap;flex:1}.toolbar label{width:calc(50% - 6px)}.filter-actions{grid-column:1/-1}.session-page{grid-template-columns:1fr}.login-card{padding:24px}}