:root{
  --bg:#0B101A; --bg2:#0F1728; --card:#141C2C; --line:#223049;
  --text:#EAF0FA; --text2:#93A0B8; --accent:#5AA2FF; --accent2:#2FD3E8;
  --ok:#37C98A; --warn:#F0A33E; --err:#FF5D6C; --radius:14px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  background:var(--bg); color:var(--text);
  font:15px/1.7 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--accent);text-decoration:none}
a:hover{color:var(--accent2)}
img{max-width:100%;display:block}

/* ---------- 顶部导航 ---------- */
.nav{
  position:sticky;top:0;z-index:50;
  display:flex;align-items:center;gap:16px;
  padding:14px 28px;
  background:rgba(11,16,26,.82);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.nav .logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:18px;color:#fff}
.nav .logo .dot{
  width:26px;height:26px;border-radius:8px;
  background:linear-gradient(135deg,var(--accent),var(--accent2));
}
.nav .sp{flex:1}
.nav a.navlink{color:var(--text2);font-size:14px}
.nav a.navlink:hover{color:#fff}

/* ---------- 通用容器 ---------- */
.wrap{max-width:1080px;margin:0 auto;padding:0 24px}
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:11px 20px;border-radius:11px;border:1px solid transparent;
  background:linear-gradient(135deg,var(--accent),#3B7FE0);
  color:#fff;font-weight:600;font-size:14px;cursor:pointer;
  transition:.18s;
}
.btn:hover{filter:brightness(1.08);color:#fff}
.btn.ghost{background:transparent;border-color:var(--line);color:var(--text2)}
.btn.ghost:hover{border-color:var(--accent);color:#fff}
.btn.sm{padding:7px 13px;font-size:13px;border-radius:9px}
.btn.danger{background:var(--err)}
.btn.ok{background:var(--ok)}

/* ---------- Hero ---------- */
.hero{
  padding:76px 0 56px;text-align:center;
  background:
    radial-gradient(760px 380px at 22% -8%, rgba(90,162,255,.22), transparent 70%),
    radial-gradient(680px 340px at 82% 6%, rgba(47,211,232,.16), transparent 70%);
}
.hero h1{margin:0 0 14px;font-size:46px;line-height:1.15;font-weight:800;letter-spacing:-.5px}
.hero h1 span{background:linear-gradient(135deg,var(--accent),var(--accent2));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p{margin:0 auto 30px;max-width:620px;color:var(--text2);font-size:16px}
.hero .meta{margin-top:16px;color:var(--text2);font-size:13px}
.hero .meta b{color:var(--text);font-weight:600}

/* ---------- 小节 ---------- */
.section{padding:56px 0}
.section h2{margin:0 0 8px;font-size:26px;font-weight:800}
.section .sub{margin:0 0 28px;color:var(--text2);font-size:14px}

.grid{display:grid;gap:16px}
.grid.c3{grid-template-columns:repeat(3,1fr)}
.grid.c4{grid-template-columns:repeat(4,1fr)}
.grid.c2{grid-template-columns:repeat(2,1fr)}
@media(max-width:860px){.grid.c3,.grid.c4,.grid.c2{grid-template-columns:1fr 1fr}}
@media(max-width:560px){.grid.c3,.grid.c4,.grid.c2{grid-template-columns:1fr}}

.card{
  background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius);padding:20px;
}
.card h3{margin:0 0 8px;font-size:16px;font-weight:700}
.card p{margin:0;color:var(--text2);font-size:14px}
.card .ic{
  width:38px;height:38px;border-radius:11px;margin-bottom:12px;
  background:rgba(90,162,255,.16);display:flex;align-items:center;justify-content:center;
  font-size:19px;
}

/* ---------- 版本/日志 ---------- */
.log{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:22px 24px;
}
.log .row{display:flex;gap:14px;padding:10px 0;border-bottom:1px dashed var(--line)}
.log .row:last-child{border-bottom:0}
.log .ver{min-width:80px;font-weight:700;color:var(--accent)}
.log .txt{flex:1;color:var(--text2);font-size:14px}

.foot{padding:34px 0;color:var(--text2);font-size:13px;text-align:center;border-top:1px solid var(--line)}

/* ================= 后台 ================= */
.admin{display:flex;min-height:100vh}
.side{
  width:210px;flex:none;background:var(--bg2);border-right:1px solid var(--line);
  padding:18px 12px;
}
.side .brand{display:flex;align-items:center;gap:9px;padding:6px 10px 18px;font-weight:800;font-size:16px}
.side .brand .dot{width:24px;height:24px;border-radius:7px;background:linear-gradient(135deg,var(--accent),var(--accent2))}
.side a{
  display:flex;align-items:center;gap:9px;margin-bottom:4px;
  padding:9px 12px;border-radius:9px;color:var(--text2);font-size:14px;
}
.side a:hover{background:rgba(255,255,255,.05);color:#fff}
.side a.on{background:rgba(90,162,255,.16);color:var(--accent);font-weight:600}
.side .grp{margin:14px 12px 6px;font-size:11px;color:#5E6B84;letter-spacing:1px}

.main{flex:1;min-width:0;padding:24px 28px}
.main h1{margin:0 0 4px;font-size:22px;font-weight:800}
.main .desc{margin:0 0 22px;color:var(--text2);font-size:13px}

.stat{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:18px;
}
.stat .k{color:var(--text2);font-size:12px;margin-bottom:8px}
.stat .v{font-size:28px;font-weight:800;line-height:1.1}
.stat .t{color:var(--text2);font-size:12px;margin-top:6px}
.stat.a .v{color:var(--accent)} .stat.b .v{color:var(--accent2)}
.stat.c .v{color:var(--ok)}    .stat.d .v{color:var(--warn)}

.tbl{width:100%;border-collapse:collapse;font-size:14px}
.tbl th,.tbl td{padding:11px 12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:middle}
.tbl th{color:var(--text2);font-weight:600;font-size:12.5px;background:rgba(255,255,255,.02)}
.tbl tr:hover td{background:rgba(255,255,255,.02)}
.tbl .nowrap{white-space:nowrap}
.panel{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.panel .hd{padding:14px 18px;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:12px}
.panel .hd h3{margin:0;font-size:15px;font-weight:700}
.panel .bd{padding:18px}
.panel .bd.fluid{padding:0}

.tag{display:inline-block;padding:2px 9px;border-radius:20px;font-size:12px;border:1px solid var(--line);color:var(--text2)}
.tag.ok{color:var(--ok);border-color:rgba(55,201,138,.4);background:rgba(55,201,138,.1)}
.tag.warn{color:var(--warn);border-color:rgba(240,163,62,.4);background:rgba(240,163,62,.1)}
.tag.err{color:var(--err);border-color:rgba(255,93,108,.4);background:rgba(255,93,108,.1)}
.tag.acc{color:var(--accent);border-color:rgba(90,162,255,.4);background:rgba(90,162,255,.1)}

.field{margin-bottom:14px}
.field label{display:block;margin-bottom:6px;font-size:13px;color:var(--text2)}
.field input,.field select,.field textarea{
  width:100%;padding:9px 12px;border-radius:9px;
  background:#0D1421;border:1px solid var(--line);color:var(--text);font-size:14px;
  font-family:inherit;
}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--accent)}
.field textarea{min-height:90px;resize:vertical}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
@media(max-width:640px){.row2{grid-template-columns:1fr}}

.pager{display:flex;gap:8px;align-items:center;padding:14px 18px;color:var(--text2);font-size:13px}
.pager a,.pager span{padding:6px 11px;border-radius:8px;border:1px solid var(--line);color:var(--text2)}
.pager a:hover{border-color:var(--accent);color:#fff}
.pager .cur{background:rgba(90,162,255,.16);color:var(--accent);border-color:transparent}

.empty{padding:34px;text-align:center;color:var(--text2);font-size:14px}
.alert{padding:11px 16px;border-radius:10px;margin-bottom:16px;font-size:14px}
.alert.err{background:rgba(255,93,108,.12);color:#FFB3BA;border:1px solid rgba(255,93,108,.3)}
.alert.ok{background:rgba(55,201,138,.12);color:#9FE7C4;border:1px solid rgba(55,201,138,.3)}

.login{
  min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px;
  background:radial-gradient(700px 400px at 50% -10%, rgba(90,162,255,.18), transparent 70%);
}
.login .box{width:100%;max-width:360px;background:var(--card);border:1px solid var(--line);border-radius:16px;padding:28px}
.login h1{margin:0 0 4px;font-size:20px;text-align:center}
.login .sub{margin:0 0 22px;text-align:center;color:var(--text2);font-size:13px}

.muted{color:var(--text2)}
.small{font-size:12.5px}
.mb0{margin-bottom:0} .mb1{margin-bottom:10px} .mb2{margin-bottom:18px}
.mt1{margin-top:10px} .mt2{margin-top:18px}
.flexr{display:flex;gap:10px;align-items:center;flex-wrap:wrap}