:root{
  --primary:#4f46e5;
  --primary-d:#4338ca;
  --bg:#f4f6fb;
  --card:#ffffff;
  --text:#1f2937;
  --muted:#6b7280;
  --border:#e5e7eb;
  --ok:#16a34a;
  --warn:#d97706;
  --bad:#dc2626;
  --radius:14px;
  --shadow:0 6px 24px rgba(17,24,39,.06);
}
*{box-sizing:border-box}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;background:var(--bg);color:var(--text);font-size:14px;line-height:1.6}
a{color:var(--primary);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:1080px;margin:0 auto;padding:24px}
.topbar{background:linear-gradient(120deg,var(--primary),#7c3aed);color:#fff;padding:14px 24px;display:flex;align-items:center;justify-content:space-between}
.topbar a{color:#fff}
.topbar .brand{font-weight:700;font-size:18px}
.topbar nav a{margin-left:18px;opacity:.92}
.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:24px;margin-bottom:20px}
.grid{display:grid;gap:18px}
.grid.cols-2{grid-template-columns:repeat(2,1fr)}
.grid.cols-3{grid-template-columns:repeat(3,1fr)}
.grid.cols-4{grid-template-columns:repeat(4,1fr)}
@media(max-width:1180px){.grid.cols-4{grid-template-columns:repeat(2,1fr)}}
@media(max-width:760px){.grid.cols-2,.grid.cols-3,.grid.cols-4{grid-template-columns:1fr}}
.stat{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow)}
.stat .num{font-size:28px;font-weight:800;color:var(--primary)}
.stat .label{color:var(--muted);margin-top:4px}
h1,h2,h3{margin:0 0 14px}
.btn{display:inline-block;background:var(--primary);color:#fff;border:none;padding:10px 18px;border-radius:10px;cursor:pointer;font-size:14px;transition:.15s}
.btn:hover{background:var(--primary-d);text-decoration:none}
.btn.ghost{background:#eef2ff;color:var(--primary)}
.btn.danger{background:var(--bad)}
.btn.sm{padding:6px 12px;font-size:13px}
.form-group{margin-bottom:16px}
.form-group label{display:block;margin-bottom:6px;color:var(--muted);font-weight:600}
input,select,textarea{width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:10px;font-size:14px;font-family:inherit;background:#fff}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--primary)}
table{width:100%;border-collapse:collapse;background:var(--card);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
th,td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--border);font-size:13px}
th{background:#f9fafb;color:var(--muted);font-weight:700}
tr:last-child td{border-bottom:none}
.badge{padding:2px 10px;border-radius:999px;font-size:12px;font-weight:700}
.badge.ok{background:#dcfce7;color:var(--ok)}
.badge.warn{background:#fef3c7;color:var(--warn)}
.badge.bad{background:#fee2e2;color:var(--bad)}
.badge.gray{background:#e5e7eb;color:var(--muted)}
.alert{padding:12px 16px;border-radius:10px;margin-bottom:16px;font-size:14px}
.alert.ok{background:#dcfce7;color:#166534}
.alert.bad{background:#fee2e2;color:#991b1b}
.alert.info{background:#e0f2fe;color:#075985}
.muted{color:var(--muted)}
.center{text-align:center}
.row{display:flex;gap:12px;flex-wrap:wrap;align-items:center}
.spacer{flex:1}
.code{font-family:ui-monospace,Consolas,monospace;background:#0f172a;color:#e2e8f0;padding:14px 16px;border-radius:10px;overflow:auto;font-size:13px;white-space:pre}
.qr-note{background:#fffbeb;border:1px solid #fde68a;color:#92400e;padding:8px 12px;border-radius:8px;font-size:12px;margin-top:8px}
.logout{color:#fee2e2}
/* 登录页 */
.auth{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(120deg,#4f46e5,#7c3aed)}
.auth .box{background:#fff;padding:32px;width:380px;border-radius:18px;box-shadow:0 20px 60px rgba(0,0,0,.2)}
.auth h2{text-align:center;color:var(--primary)}
.auth .btn{width:100%}
.sidebar{width:220px;background:#111827;color:#cbd5e1;min-height:100vh;padding:18px 0;position:fixed;left:0;top:0}
.sidebar .brand{color:#fff;font-weight:800;font-size:18px;padding:0 20px 18px;border-bottom:1px solid #1f2937}
.sidebar a{display:block;color:#cbd5e1;padding:11px 20px;font-size:14px}
.sidebar a:hover,.sidebar a.active{background:#1f2937;color:#fff;text-decoration:none}
.admin-main{margin-left:220px;padding:24px}
.admin-top{background:#111827;color:#fff;padding:12px 24px;margin-left:220px;display:flex;justify-content:space-between;align-items:center}

/* ==================== 官网首页 ==================== */
.site-nav{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--border)}
.site-nav .inner{max-width:1120px;margin:0 auto;padding:12px 24px;display:flex;align-items:center;gap:28px}
.site-nav .logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:18px;color:var(--text)}
.site-nav .logo:hover{text-decoration:none}
.site-nav .logo-mark{width:32px;height:32px;border-radius:9px;background:linear-gradient(120deg,var(--primary),#7c3aed);color:#fff;display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:800}
.site-nav .nav-links{display:flex;gap:24px;flex:1}
.site-nav .nav-links a{color:var(--text);font-size:14px}
.site-nav .nav-links a:hover{color:var(--primary);text-decoration:none}
.site-nav .nav-cta{display:flex;gap:10px}

.hero{background:linear-gradient(120deg,#4f46e5,#7c3aed);color:#fff;padding:68px 24px 84px;text-align:center}
.hero h1{font-size:40px;font-weight:800;letter-spacing:-.5px;margin:0 0 16px;color:#fff}
.hero .sub{font-size:16px;opacity:.93;max-width:660px;margin:0 auto 30px;line-height:1.9}
.hero-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.btn.light{background:#fff;color:var(--primary)}
.btn.light:hover{background:#f3f4ff}
.btn.outline{background:rgba(255,255,255,.12);color:#fff;border:1px solid rgba(255,255,255,.55)}
.btn.outline:hover{background:rgba(255,255,255,.22)}

.wrap-narrow{max-width:1120px;margin:0 auto;padding:0 24px}
.query-wrap{margin-top:-44px}
.query-card{background:#fff;border:1px solid var(--border);border-radius:16px;box-shadow:0 14px 44px rgba(17,24,39,.10);padding:28px}
.query-card h2{font-size:20px;margin-bottom:6px}
.query-form{display:flex;gap:12px;margin-top:18px}
.query-form input{flex:1}
.query-tip{color:var(--muted);font-size:12px;margin-top:10px}

.q-result{margin-top:22px;border-radius:12px;padding:22px;border:1px solid var(--border);display:none}
.q-result.show{display:block}
.q-result.ok{background:#f0fdf4;border-color:#bbf7d0}
.q-result.bad{background:#fef2f2;border-color:#fecaca}
.q-result.warn{background:#fffbeb;border-color:#fde68a}
.q-head{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.q-head .mark{width:38px;height:38px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:18px;color:#fff;flex:none}
.q-result.ok .mark{background:#16a34a}
.q-result.bad .mark{background:#dc2626}
.q-result.warn .mark{background:#d97706}
.q-head .t{font-size:17px;font-weight:700}
.q-result.ok .t{color:#166534}
.q-result.bad .t{color:#991b1b}
.q-result.warn .t{color:#92400e}
.q-head .d{color:var(--muted);font-size:13px}
.q-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:18px}
.q-item{background:#fff;border:1px solid var(--border);border-radius:10px;padding:12px 14px}
.q-item .k{color:var(--muted);font-size:12px}
.q-item .v{font-weight:700;font-size:15px;margin-top:5px;word-break:break-all}

.section{max-width:1120px;margin:0 auto;padding:60px 24px}
.section-head{text-align:center;margin-bottom:38px}
.section-head h2{font-size:26px;margin-bottom:10px}
.section-head p{color:var(--muted);margin:0}
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.feature{background:#fff;border:1px solid var(--border);border-radius:14px;padding:24px;transition:.2s}
.feature:hover{transform:translateY(-3px);box-shadow:0 14px 32px rgba(17,24,39,.08);border-color:#c7d2fe}
.feature .ico{width:44px;height:44px;border-radius:12px;background:#eef2ff;color:var(--primary);display:flex;align-items:center;justify-content:center;font-weight:800;font-size:15px;margin-bottom:14px}
.feature h3{font-size:16px;margin-bottom:8px}
.feature p{color:var(--muted);font-size:13px;margin:0}

.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.step{background:#fff;border:1px solid var(--border);border-radius:14px;padding:22px}
.step .no{width:30px;height:30px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px;margin-bottom:12px}
.step h4{margin:0 0 6px;font-size:15px}
.step p{margin:0;color:var(--muted);font-size:13px}

.site-footer{background:#111827;color:#9ca3af;padding:34px 24px;margin-top:30px}
.site-footer .inner{max-width:1120px;margin:0 auto;display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;font-size:13px;align-items:center}
.site-footer a{color:#cbd5e1;margin-left:16px}
.site-footer a:first-child{margin-left:0}

@media(max-width:900px){
  .hero h1{font-size:30px}
  .site-nav .nav-links{display:none}
  .feature-grid,.steps{grid-template-columns:repeat(2,1fr)}
  .q-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:600px){
  .feature-grid,.steps,.q-grid{grid-template-columns:1fr}
  .query-form{flex-direction:column}
}

/* ==================== 登录页（分栏） ==================== */
.auth-split{min-height:100vh;display:flex}
.auth-brand{flex:1.05;background:linear-gradient(135deg,#4f46e5,#7c3aed);color:#fff;padding:56px 48px;display:flex;flex-direction:column;justify-content:center}
.auth-brand.dark{background:linear-gradient(135deg,#0f172a,#1e293b)}
.auth-brand .mark{width:46px;height:46px;border-radius:13px;background:rgba(255,255,255,.18);display:flex;align-items:center;justify-content:center;font-weight:800;font-size:18px;margin-bottom:22px}
.auth-brand h1{font-size:30px;color:#fff;margin:0 0 14px;font-weight:800}
.auth-brand .lead{font-size:14px;line-height:1.9;opacity:.92;margin:0}
.auth-brand ul{list-style:none;padding:0;margin:26px 0 0}
.auth-brand li{padding:7px 0;font-size:14px;opacity:.94}
.auth-brand li::before{content:"✓";font-weight:800;margin-right:9px}
.auth-panel{flex:1;display:flex;align-items:center;justify-content:center;padding:40px 24px;background:var(--bg)}
.auth-panel .box{width:100%;max-width:380px}
.auth-panel h2{font-size:22px;margin-bottom:6px}
.auth-panel .sub{color:var(--muted);font-size:13px;margin:0 0 24px}
.auth-panel .btn{width:100%}
.auth-foot{color:var(--muted);font-size:13px;text-align:center;margin-top:18px}
@media(max-width:880px){
  .auth-brand{display:none}
  .auth-split{display:block}
}