:root{
  --bg:#f6f7fb; --card:#fff; --text:#1c2033; --muted:#6b7190; --line:#e4e7f2;
  --brand:#5b5bf0; --brand2:#12b8a6; --danger:#e5484d; --ok:#12a150;
  --radius:14px; --shadow:0 6px 24px rgba(40,50,120,.08);
}
@media (prefers-color-scheme: dark){
  :root{--bg:#0e1020;--card:#171a2e;--text:#eceefb;--muted:#9aa0c3;--line:#262a45;--shadow:0 6px 24px rgba(0,0,0,.35)}
}
*{box-sizing:border-box}
body{margin:0;font:16px/1.55 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;background:var(--bg);color:var(--text)}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:1040px;margin:0 auto;padding:0 18px}
.nav{background:var(--card);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:5}
.nav-in{display:flex;align-items:center;justify-content:space-between;height:62px}
.brand{font-weight:800;font-size:20px;color:var(--text);display:flex;align-items:center;gap:8px}
.brand:hover{text-decoration:none}
.logo{background:linear-gradient(135deg,var(--brand),var(--brand2));border-radius:10px;width:32px;height:32px;display:grid;place-items:center;font-size:16px}
nav{display:flex;align-items:center;gap:18px}
nav a{color:var(--text);font-weight:500}
.btn,button.btn{display:inline-block;background:var(--brand);color:#fff!important;border:0;padding:10px 18px;border-radius:10px;font:600 15px system-ui;cursor:pointer;text-decoration:none!important}
.btn:hover{filter:brightness(1.08)}
.btn-ghost{background:transparent;color:var(--text)!important;border:1px solid var(--line)}
.btn-danger{background:var(--danger)}
.btn-sm{padding:6px 12px;font-size:13px;border-radius:8px}
.hero{padding:70px 0 40px;text-align:center}
.hero h1{font-size:clamp(32px,6vw,54px);line-height:1.1;margin:0 0 14px;letter-spacing:-1px}
.hero h1 span{background:linear-gradient(135deg,var(--brand),var(--brand2));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p{color:var(--muted);font-size:18px;max-width:560px;margin:0 auto 30px}
.shorten{background:var(--card);border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);padding:14px;max-width:720px;margin:0 auto;display:flex;gap:10px;flex-wrap:wrap}
.shorten input[type=text]{flex:1 1 280px}
input[type=text],input[type=url],input[type=email],input[type=password],input[type=datetime-local],select{width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:10px;background:var(--bg);color:var(--text);font:inherit}
input:focus{outline:2px solid var(--brand);outline-offset:0}
label{display:block;font-weight:600;font-size:14px;margin:12px 0 6px}
.result{max-width:720px;margin:18px auto 0;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:14px;display:flex;gap:10px;align-items:center;flex-wrap:wrap;text-align:left}
.result input{flex:1 1 240px;font-weight:600}
.features{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;padding:30px 0 60px}
.feature{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px}
.feature h3{margin:6px 0}
.feature p{margin:0;color:var(--muted);font-size:15px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:22px;margin:22px 0}
.auth{max-width:420px;margin:50px auto}
.auth h2{margin-top:0}
.alert{margin:16px 0;padding:12px 14px;border-radius:10px;font-weight:500}
.alert-ok{background:rgba(18,161,80,.12);color:var(--ok)}
.alert-err{background:rgba(229,72,77,.12);color:var(--danger)}
.grid{display:grid;gap:14px}
.grid-4{grid-template-columns:repeat(auto-fit,minmax(170px,1fr))}
.grid-2{grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}
.stat{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px}
.stat b{display:block;font-size:28px}
.stat span{color:var(--muted);font-size:14px}
.row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
@media(max-width:600px){.row{grid-template-columns:1fr}}
table{width:100%;border-collapse:collapse}
th,td{text-align:left;padding:11px 8px;border-bottom:1px solid var(--line);vertical-align:middle}
th{font-size:13px;color:var(--muted);text-transform:uppercase;letter-spacing:.4px}
.tbl-wrap{overflow-x:auto}
.truncate{max-width:260px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;display:block;color:var(--muted);font-size:14px}
.badge{display:inline-block;padding:2px 9px;border-radius:99px;font-size:12px;font-weight:600;background:var(--line);color:var(--muted)}
.badge-ok{background:rgba(18,161,80,.14);color:var(--ok)}
.badge-err{background:rgba(229,72,77,.14);color:var(--danger)}
.actions{display:flex;gap:6px;flex-wrap:wrap}
.bar-row{display:flex;align-items:center;gap:10px;margin:8px 0;font-size:14px}
.bar-row .name{width:130px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.bar{flex:1;background:var(--line);border-radius:99px;height:10px;overflow:hidden}
.bar i{display:block;height:100%;background:linear-gradient(90deg,var(--brand),var(--brand2))}
.bar-row .num{width:44px;text-align:right;color:var(--muted)}
.chart{display:flex;align-items:flex-end;gap:3px;height:140px;padding-top:10px}
.chart div{flex:1;background:linear-gradient(180deg,var(--brand),var(--brand2));border-radius:4px 4px 0 0;min-height:2px;position:relative}
.chart div:hover::after{content:attr(data-tip);position:absolute;bottom:100%;left:50%;transform:translateX(-50%);background:var(--text);color:var(--bg);padding:2px 7px;border-radius:6px;font-size:12px;white-space:nowrap;margin-bottom:4px}
.modal{position:fixed;inset:0;background:rgba(10,12,30,.55);display:none;place-items:center;z-index:20;padding:18px}
.modal.open{display:grid}
.modal .box{background:var(--card);border-radius:18px;padding:24px;text-align:center;max-width:320px;width:100%}
.modal canvas,.modal img{max-width:100%;background:#fff;padding:10px;border-radius:10px}
.foot{border-top:1px solid var(--line);padding:22px 0;color:var(--muted);text-align:center;font-size:14px}
.muted{color:var(--muted)}
details.adv{margin-top:6px;width:100%;text-align:left}
details.adv summary{cursor:pointer;color:var(--muted);font-weight:600;padding:4px 6px}
.center{text-align:center}