:root{--bg:#f4f6fb;--panel:#fff;--ink:#172033;--muted:#778199;--line:#e7eaf1;--primary:#6757e8;--dark:#161a2b;--cyan:#19b9c9}
*{box-sizing:border-box}
body{margin:0;font-family:"Segoe UI","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--bg)}
a{color:inherit;text-decoration:none}
.app{display:grid;grid-template-columns:250px 1fr;min-height:100vh}
.sidebar{position:fixed;inset:0 auto 0 0;width:250px;background:var(--dark);color:#cbd0df;padding:24px 16px;display:flex;flex-direction:column;z-index:5}
.logo{display:flex;align-items:center;gap:12px;color:#fff;font-weight:700;font-size:19px;padding:0 10px 24px}
.brand-mark{display:grid;place-items:center;width:48px;height:48px;border-radius:15px;background:linear-gradient(135deg,#7968ff,#39c7d6);color:#fff;font-size:24px;font-weight:800;box-shadow:0 12px 30px #6557e855}
.brand-mark.small{width:36px;height:36px;border-radius:11px;font-size:18px}
.sidebar nav{flex:1;overflow:auto}
.nav-label{font-size:11px;letter-spacing:1.3px;color:#717990;text-transform:uppercase;margin:20px 12px 8px}
.sidebar nav>a,.sidebar summary,.sidebar details a{display:block;padding:11px 13px;border-radius:9px;font-size:14px;cursor:pointer}
.sidebar nav>a:hover,.sidebar details a:hover{color:#fff;background:#ffffff0c}
.sidebar nav>a.active,.sidebar details a.active{color:#fff;background:#23283b;font-weight:600}
.sidebar details a{padding-left:34px;color:#959db3}
.sidebar summary{list-style:none;color:#f0f2f8;font-weight:600}
.sidebar summary:after{content:"⌄";float:right;color:#6f7890}
.sidebar-user{display:flex;gap:10px;align-items:center;border-top:1px solid #ffffff12;padding:18px 8px 0}
.avatar{width:36px;height:36px;border-radius:50%;display:grid;place-items:center;background:#6757e8;color:#fff}
.sidebar-user strong,.sidebar-user a{display:block;font-size:13px}
.sidebar-user a{color:#7e879e;margin-top:3px}
.app main{grid-column:2}
.topbar{height:92px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;padding:0 38px}
.topbar h1{font-size:22px;margin:0 0 4px}
.topbar p{margin:0;color:var(--muted);font-size:13px}
.menu-btn{display:none;border:0;background:none;font-size:24px;margin-right:14px}
.content{padding:32px 38px;max-width:1440px}
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-bottom:24px}
.stat,.panel,.notice{background:var(--panel);border:1px solid var(--line);border-radius:15px;box-shadow:0 3px 15px #27314b08}
.stat{padding:22px}
.stat span,.stat em{display:block;color:var(--muted);font-size:13px;font-style:normal}
.stat strong{display:block;font-size:32px;margin:7px 0}
.panel{padding:26px}
.panel-head{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-bottom:24px}
.panel h2,.panel h3,.panel p{margin-top:0}
.panel-head h2{margin-bottom:5px;font-size:18px}
.panel-head p{margin:0;color:var(--muted);font-size:13px}
.btn{border:0;border-radius:9px;padding:11px 17px;font:inherit;font-size:14px;font-weight:600;cursor:pointer}
.btn.primary{background:var(--primary);color:#fff}
.btn.secondary{background:#f0eefc;color:var(--primary)}
.btn.wide{width:100%;margin-top:4px}
.module-grid,.link-groups{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.module{border:1px solid var(--line);border-radius:12px;padding:20px}
.module h3{font-size:15px}
.quick-row{display:flex;justify-content:space-between;padding:13px 0;border-top:1px solid var(--line);font-size:14px}
.quick-row a{color:var(--primary);font-weight:600}
.link-group{border:1px solid var(--line);border-radius:13px;padding:22px}
.link-group h3{font-size:16px}
.dot{display:inline-block;width:9px;height:9px;border-radius:50%;margin-right:8px}
.purple{background:var(--primary)}
.cyan{background:var(--cyan)}
label{display:block;font-size:13px;font-weight:600;margin:17px 0 0}
.url-input{display:flex;align-items:center;border:1px solid #dfe3eb;border-radius:9px;margin-top:8px;padding:0 12px;transition:.2s}
.url-input:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px #6757e812}
.url-input input{width:100%;border:0;outline:0;padding:12px 9px;font:inherit;background:transparent}
.notice{margin-top:18px;padding:18px 22px;display:flex;gap:15px;align-items:center;font-size:13px}
.notice strong{white-space:nowrap}
.notice span{color:var(--muted)}
code{background:#f0eef8;padding:3px 6px;border-radius:5px;color:#5b4bc8}
.alert{padding:13px 15px;border-radius:9px;margin-bottom:18px;font-size:14px}
.alert.error{background:#fff0f1;color:#bd3340}
.alert.success{background:#eafaf4;color:#13835d}
.empty-state{text-align:center;padding:90px 30px}
.empty-icon{margin:auto auto 18px;width:64px;height:64px;border-radius:20px;display:grid;place-items:center;background:#f0eefc;color:var(--primary);font-size:34px}
.empty-state p{color:var(--muted)}
.badge{display:inline-block;background:#f3f4f8;color:#727b90;padding:7px 11px;border-radius:20px;font-size:12px}
.auth-page{min-height:100vh;background:radial-gradient(circle at 20% 10%,#765ee822,transparent 34%),#f4f6fb;display:grid;place-items:center;padding:30px}
.auth-shell{width:min(860px,100%);display:grid;grid-template-columns:1fr 420px;gap:80px;align-items:center}
.brand-block{display:flex;gap:18px;align-items:center}
.brand-block h1{margin:0 0 7px;font-size:30px}
.brand-block p{margin:0;color:var(--muted)}
.auth-card{background:#fff;padding:34px;border-radius:18px;box-shadow:0 24px 70px #29335b18}
.auth-card h2{margin:0 0 6px;font-size:24px}
.muted{color:var(--muted);font-size:13px}
.auth-card label{margin:19px 0}
.auth-card label>input{display:block;width:100%;border:1px solid #dfe3eb;border-radius:9px;padding:12px;margin-top:8px;font:inherit;outline:none}
.auth-card label>input:focus{border-color:var(--primary);box-shadow:0 0 0 3px #6757e812}
.auth-switch{text-align:center;font-size:13px;margin:20px 0 0;color:var(--muted)}
.auth-switch a{color:var(--primary);font-weight:600}
.demo-tip{text-align:center;background:#f7f7fb;padding:9px;border-radius:8px;font-size:12px;color:#81899c;margin-top:15px}
@media(max-width:850px){.app{display:block}
.sidebar{transform:translateX(-100%);transition:.25s}
.menu-open .sidebar{transform:none}
.app main{margin:0}
.menu-btn{display:block}
.topbar{padding:0 20px}
.content{padding:22px 18px}
.stats{grid-template-columns:1fr}
.module-grid,.link-groups{grid-template-columns:1fr}
.auth-shell{grid-template-columns:1fr;gap:30px}
.brand-block{justify-content:center}
.notice{align-items:flex-start;flex-direction:column}
.panel-head{align-items:flex-start;flex-direction:column}
}