:root{
  --primary:#1D4ED8;
  --primary-dark:#1E40AF;
  --primary-soft:#EFF4FF;
  --ink:#0F172A;
  --ink-2:#475569;
  --ink-3:#94A3B8;
  --line:#E2E8F0;
  --bg:#F5F7FB;
  --card:#FFFFFF;
  --ok:#16A34A;
  --danger:#DC2626;
  --warn:#D97706;
  --radius:14px;
  --shadow:0 10px 30px rgba(15,42,110,.08);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  background:var(--bg);color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,'PingFang SC','Hiragino Sans GB','Microsoft YaHei','Segoe UI',Roboto,sans-serif;
  -webkit-font-smoothing:antialiased;
  min-height:100vh;
}
a{color:var(--primary);text-decoration:none}
.page{max-width:880px;margin:0 auto;padding:32px 20px 60px}
/* ---------- header ---------- */
.top{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:6px 2px 26px}
.brand{display:flex;align-items:center;gap:12px}
.logo{width:42px;height:42px;border-radius:11px;flex:none;
  background:linear-gradient(135deg,#1D4ED8,#3B82F6);
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 14px rgba(29,78,216,.28)}
.logo svg{width:22px;height:22px}
.brand .bt{font-size:19px;font-weight:700;letter-spacing:.3px}
.brand .bs{font-size:12px;color:var(--ink-3);margin-top:2px}
.top .admin-link{font-size:13px;color:var(--ink-2);padding:8px 14px;border:1px solid var(--line);
  border-radius:9px;background:var(--card);transition:.15s}
.top .admin-link:hover{color:var(--primary);border-color:#BFDBFE}
/* ---------- hero ---------- */
.hero{text-align:center;padding:14px 0 30px}
.hero h1{margin:0 0 10px;font-size:30px;letter-spacing:.5px}
.hero p{margin:0;color:var(--ink-2);font-size:15px;line-height:1.7}
.hero .dom{color:var(--primary);font-weight:600}
/* ---------- generator card ---------- */
.gen-card{background:var(--card);border:1px solid var(--line);border-radius:18px;
  box-shadow:var(--shadow);padding:28px 28px 24px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;font-weight:600;color:var(--ink-2);margin-bottom:7px}
.control{display:flex;align-items:center;gap:10px;background:#F8FAFC;border:1.5px solid var(--line);
  border-radius:11px;padding:0 14px;transition:.15s}
.control:focus-within{border-color:var(--primary);background:#fff;box-shadow:0 0 0 3px rgba(29,78,216,.12)}
.control .pre{color:var(--ink-3);font-size:14px;white-space:nowrap;font-family:ui-monospace,Consolas,monospace}
.control input{flex:1;border:none;outline:none;background:transparent;font-size:15px;
  padding:13px 0;color:var(--ink);font-family:inherit}
.control input::placeholder{color:#B6C2D6}
.url-input{font-size:15px}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.hint{font-size:12px;color:var(--ink-3);margin-top:6px}
.actions{display:flex;align-items:center;gap:12px;margin-top:22px}
.btn{border:none;cursor:pointer;font-size:15px;font-weight:600;border-radius:11px;
  padding:13px 30px;transition:.15s;font-family:inherit}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 6px 16px rgba(29,78,216,.30)}
.btn-primary:hover{background:var(--primary-dark)}
.btn-primary:disabled{opacity:.6;cursor:not-allowed}
/* ---------- result ---------- */
.result{margin-top:18px;display:none;background:#F0F7FF;border:1.5px solid #BFDBFE;
  border-radius:14px;padding:18px 20px}
.result.show{display:block;animation:pop .25s ease}
@keyframes pop{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}
.result .rt{display:flex;align-items:center;gap:10px;font-size:13px;font-weight:600;color:var(--primary-dark);margin-bottom:10px}
.result .rbody{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.rlink{font-size:20px;font-weight:700;color:var(--primary);word-break:break-all;flex:1;min-width:200px}
.copy-btn{background:var(--primary);color:#fff;border:none;border-radius:9px;padding:9px 18px;
  font-size:14px;font-weight:600;cursor:pointer;font-family:inherit}
.copy-btn:hover{background:var(--primary-dark)}
.copy-btn.copied{background:var(--ok)}
.rdest{font-size:12.5px;color:var(--ink-2);word-break:break-all;background:#fff;border:1px solid #DBEAFE;
  padding:7px 10px;border-radius:8px;margin-top:10px}
.rdest b{color:var(--ink-3);font-weight:500}
/* ---------- features ---------- */
.feats{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:26px}
.feat{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:18px 18px 14px}
.feat .fi{width:36px;height:36px;border-radius:10px;background:var(--primary-soft);
  display:flex;align-items:center;justify-content:center;margin-bottom:10px}
.feat .fi svg{width:19px;height:19px}
.feat .ft{font-size:14.5px;font-weight:600;margin-bottom:4px}
.feat .fd{font-size:12.5px;color:var(--ink-2);line-height:1.6}
/* ---------- footer ---------- */
.foot{margin-top:40px;text-align:center;font-size:12px;color:var(--ink-3);line-height:1.8}
/* ---------- toast ---------- */
#toast{position:fixed;left:50%;bottom:34px;transform:translateX(-50%) translateY(20px);
  background:#0F172A;color:#fff;padding:10px 22px;border-radius:10px;font-size:14px;
  opacity:0;pointer-events:none;transition:.25s;z-index:99}
#toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
/* ---------- admin ---------- */
.login-wrap{max-width:400px;margin:12vh auto 0}
.login-card{background:var(--card);border:1px solid var(--line);border-radius:18px;
  box-shadow:var(--shadow);padding:36px 34px}
.login-card h2{margin:0 0 6px;font-size:21px}
.login-card .sub{font-size:13px;color:var(--ink-3);margin-bottom:24px}
.stat-grid{display:grid;grid-template-columns:1fr 1fr 1fr;gap:14px;margin:0 0 18px}
.stat{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:16px 18px}
.stat .sv{font-size:24px;font-weight:700;color:var(--primary)}
.stat .sl{font-size:12.5px;color:var(--ink-3);margin-top:3px}
.tbl-wrap{background:var(--card);border:1px solid var(--line);border-radius:16px;overflow:auto;box-shadow:var(--shadow)}
table{width:100%;border-collapse:collapse;font-size:13.5px;min-width:760px}
th{background:#F8FAFC;text-align:left;padding:12px 14px;color:var(--ink-2);font-size:12.5px;
  border-bottom:1px solid var(--line);white-space:nowrap;position:sticky;top:0}
td{padding:11px 14px;border-bottom:1px solid #F1F5F9;vertical-align:middle;color:var(--ink-2)}
tr:last-child td{border-bottom:none}
tr:hover td{background:#F8FAFC}
.tcode{font-family:ui-monospace,Consolas,monospace;font-weight:600;color:var(--primary);cursor:pointer}
.turl{max-width:300px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;display:inline-block;vertical-align:bottom}
.tbadge{display:inline-block;font-size:11.5px;padding:2px 10px;border-radius:99px;font-weight:600}
.tbadge.on{background:#DCFCE7;color:#15803D}
.tbadge.off{background:#FEE2E2;color:#B91C1C}
.op-btn{border:1px solid var(--line);background:#fff;border-radius:8px;padding:5px 12px;
  font-size:12.5px;cursor:pointer;color:var(--ink-2);font-family:inherit;margin-right:6px;transition:.15s}
.op-btn:hover{border-color:var(--primary);color:var(--primary)}
.op-btn.danger:hover{border-color:var(--danger);color:var(--danger)}
.op-btn.copied{background:var(--ok);color:#fff;border-color:var(--ok)}
.muted{color:var(--ink-3);font-size:12px}
.toolbar{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:14px;flex-wrap:wrap}
.toolbar h2{margin:0;font-size:18px}
.toolbar .right{display:flex;gap:8px}
@media(max-width:640px){
  .row2{grid-template-columns:1fr}
  .feats{grid-template-columns:1fr}
  .hero h1{font-size:24px}
  .gen-card{padding:20px 18px}
  .rlink{font-size:17px}
}
/* ---------- admin: tabs & presets ---------- */
.tabbar{display:flex;align-items:center;gap:6px;background:var(--card);border:1px solid var(--line);
  border-radius:13px;padding:6px;margin-bottom:16px}
.tab{border:none;background:transparent;padding:9px 22px;border-radius:9px;font-size:14px;cursor:pointer;
  color:var(--ink-2);font-family:inherit;font-weight:600;transition:.15s}
.tab:hover{color:var(--primary)}
.tab.active{background:var(--primary);color:#fff;box-shadow:0 4px 10px rgba(29,78,216,.25)}
.pre-card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:18px 20px;box-shadow:var(--shadow)}
.add-bar{display:flex;gap:10px;margin-top:14px;align-items:center}
.row-input{border:1.5px solid var(--line);border-radius:9px;padding:9px 12px;font-size:13.5px;outline:none;
  font-family:inherit;color:var(--ink);background:#fff;width:100%;min-width:0;transition:.15s}
.row-input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(29,78,216,.10)}
.row-input.grow{flex:1;min-width:200px}
td .row-input{padding:7px 10px;font-size:13px;background:#FDFEFF}
select{appearance:none;-webkit-appearance:none}
.control select option{color:var(--ink);background:#fff}
@media(max-width:640px){
  .add-bar{flex-direction:column;align-items:stretch}
  .add-bar .grow{min-width:0}
}
/* ---------- v2: user chips / owner multi-select / user cards ---------- */
.top-user{display:flex;align-items:center;gap:8px;flex-wrap:wrap;justify-content:flex-end}
.u-chip{background:var(--card);border:1px solid var(--line);padding:6px 12px;border-radius:99px;
  font-size:13px;color:var(--ink-2);display:inline-flex;align-items:center;gap:5px}
.u-chip b{color:var(--ink)}
.q-badge.free{background:#DCFCE7;color:#15803D;border-color:#BBF7D0}
.q-badge{background:#EFF4FF;color:var(--primary-dark);border-color:#DBEAFE;font-weight:700}
.q-badge.low{background:#FEF3C7;color:#B45309;border-color:#FDE68A}
.owner-wrap{display:flex;flex-wrap:wrap;gap:8px}
.owner-opt{display:inline-flex;align-items:center;gap:6px;border:1.5px solid var(--line);
  border-radius:99px;padding:6px 12px;cursor:pointer;font-size:13px;color:var(--ink-2);
  user-select:none;background:#fff;transition:.15s}
.owner-opt input{display:none}
.owner-opt.on{border-color:var(--primary);background:var(--primary-soft);color:var(--primary-dark);font-weight:600}
.user-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.user-card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:16px 18px;box-shadow:var(--shadow)}
.user-card.add-card{border-style:dashed}
.uc-head{display:flex;align-items:center;gap:10px;margin-bottom:6px;flex-wrap:wrap}
.uc-title{font-size:15px;font-weight:700}
.role-badge{font-size:11.5px;padding:2px 10px;border-radius:99px;background:var(--primary-soft);
  color:var(--primary-dark);font-weight:600}
.role-badge.user{background:#F1F5F9;color:#475569}
.uc-meta{font-size:12px;color:var(--ink-3);margin-left:auto}
.uc-row{display:flex;gap:8px;align-items:center;flex-wrap:wrap;margin:8px 0}
.uc-row .f{font-size:12.5px;color:var(--ink-3);flex:none;min-width:38px}
.uc-row .row-input{width:auto}
.uc-row .row-input.grow{flex:1;min-width:120px}
.uc-row input[type=number]{width:96px}
.radio-pill{display:inline-flex;align-items:center;gap:5px;font-size:13px;color:var(--ink-2);cursor:pointer;margin-right:4px}
.uc-domains{display:flex;flex-wrap:wrap;gap:6px;margin-top:2px}
.mini{font-size:12px;color:var(--ink-3)}
@media(max-width:900px){ .user-grid{grid-template-columns:1fr} }