/* SpiderBrowser 后台样式：深色侧栏 + 浅色工作区 */
:root{
  --ink:#0b1623;--ink-2:#31445a;--muted:#6b7f93;--line:#e3ebf4;--soft:#f6f9fd;
  --accent:#0ea5e9;--accent-2:#22d3ee;--dark:#081420;
}
*{box-sizing:border-box}
body{margin:0;background:var(--soft);color:var(--ink);
  font:15px/1.7 -apple-system,"PingFang SC","Microsoft YaHei",sans-serif}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{margin:0;line-height:1.35}
p{margin:0}
.layout{display:grid;grid-template-columns:250px 1fr;min-height:100vh}

/* 侧栏 */
.side{background:linear-gradient(180deg,#07131f,#0a1c2b);color:#a9bfd1;
  padding:26px 18px;display:flex;flex-direction:column;gap:6px;position:sticky;top:0;height:100vh}
.side-brand{display:flex;align-items:center;gap:10px;padding:0 10px 22px;color:#eaf6ff}
.side-brand b{font-size:16px;letter-spacing:.3px}
.side-brand span{display:block;font-size:11.5px;color:#5f7b90;letter-spacing:.14em}
.side-tag{font-size:11px;letter-spacing:.16em;color:#4f6a7e;padding:16px 12px 8px;font-weight:700}
.side a.item{display:flex;align-items:center;gap:10px;padding:11px 12px;border-radius:10px;
  font-size:14.5px;color:#a9bfd1;transition:.18s}
.side a.item:hover{background:rgba(34,211,238,.08);color:#dff6ff}
.side a.item.on{background:rgba(34,211,238,.14);color:#7fe3f5;font-weight:600;
  box-shadow:inset 2px 0 0 #22d3ee}
.side .spacer{flex:1}
.side .foot{font-size:12px;color:#4f6a7e;padding:14px 12px 0;line-height:1.8}

/* 工作区 */
.main{padding:30px 40px 60px;min-width:0}
.topbar{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:28px}
.topbar h1{font-size:23px;letter-spacing:-.01em}
.topbar .sub{color:var(--muted);font-size:13.5px;margin-top:5px}
.who{display:flex;align-items:center;gap:12px;font-size:13.5px;color:var(--muted)}
.who b{color:var(--ink)}

.card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:24px 26px;
  box-shadow:0 4px 18px rgba(16,50,80,.04)}
.card h2{font-size:17px;margin-bottom:4px}
.card .hint{color:var(--muted);font-size:13px;margin-bottom:18px}

.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-bottom:26px}
@media(max-width:1100px){.stats{grid-template-columns:repeat(2,1fr)}}
.stat{background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px 24px;
  position:relative;overflow:hidden}
.stat::after{content:"";position:absolute;right:-30px;top:-40px;width:120px;height:120px;
  border-radius:50%;background:radial-gradient(circle,rgba(34,211,238,.12),transparent 70%)}
.stat span{font-size:13px;color:var(--muted)}
.stat b{display:block;font-size:30px;letter-spacing:-.02em;margin-top:6px}
.stat i{font-style:normal;font-size:12px;color:#0ea5e9}

.grid-2{display:grid;grid-template-columns:1.4fr 1fr;gap:22px}
@media(max-width:1100px){.grid-2{grid-template-columns:1fr}}

/* 表格 */
table.tb{width:100%;border-collapse:collapse;font-size:14px}
table.tb th{text-align:left;font-weight:600;color:var(--muted);font-size:12.5px;
  letter-spacing:.04em;padding:10px 12px;border-bottom:1px solid var(--line);white-space:nowrap}
table.tb td{padding:13px 12px;border-bottom:1px solid #f0f5fa;vertical-align:middle}
table.tb tr:last-child td{border-bottom:0}
table.tb tr:hover td{background:#fbfdff}
table.tb .t{font-weight:600}
.muted{color:var(--muted);font-size:13px}

/* 标签 */
.tag{display:inline-flex;align-items:center;gap:5px;padding:3px 10px;border-radius:999px;
  font-size:12px;font-weight:600;background:#eef9ff;color:#0b6d94;border:1px solid #cdecfb}
.tag.gray{background:#f2f6fa;color:#6b7f93;border-color:#e3ebf4}
.tag.warn{background:#fff8ec;color:#a06a00;border-color:#ffe6bd}
.tag.danger{background:#fff2f4;color:#c8324a;border-color:#ffd4db}
.tag.pro{background:#f2f0ff;color:#5b48c9;border-color:#ddd6ff}
.tag.ultimate{background:#081420;color:#7fe3f5;border-color:#123a4d}

/* 按钮与表单 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;height:38px;
  padding:0 18px;border-radius:10px;font-size:14px;font-weight:600;border:1px solid var(--line);
  background:#fff;color:var(--ink-2);cursor:pointer;transition:.18s;white-space:nowrap}
.btn:hover{border-color:var(--accent);color:var(--accent)}
.btn.primary{background:linear-gradient(120deg,var(--accent),var(--accent-2));
  color:#04121d;border-color:transparent;box-shadow:0 8px 20px rgba(14,165,233,.24)}
.btn.primary:hover{filter:brightness(1.05);color:#04121d}
.btn.danger{color:#c8324a;border-color:#ffd4db}
.btn.danger:hover{background:#fff2f4;border-color:#ffb3c0;color:#c8324a}
.btn.sm{height:32px;padding:0 12px;font-size:13px;border-radius:8px}
.btn.link{background:transparent;border:0;color:var(--accent);padding:0;height:auto}

.form-row{margin-bottom:18px;max-width:820px}
.form-row label{display:block;font-size:13px;font-weight:600;color:var(--ink-2);margin-bottom:7px}
.form-row input[type=text],.form-row input[type=password],.form-row input[type=number],
.form-row input[type=email],.form-row select,.form-row textarea{
  width:100%;padding:10px 13px;border:1px solid var(--line);border-radius:10px;
  background:#fbfdff;font-size:14.5px;color:var(--ink);outline:none;font-family:inherit}
.form-row input:focus,.form-row select:focus,.form-row textarea:focus{
  border-color:var(--accent);background:#fff;box-shadow:0 0 0 3px rgba(14,165,233,.10)}
.form-row textarea{min-height:120px;resize:vertical;line-height:1.8}
.form-row .help{font-size:12.5px;color:var(--muted);margin-top:6px}
.form-2{display:grid;grid-template-columns:1fr 1fr;gap:18px;max-width:820px}
@media(max-width:760px){.form-2{grid-template-columns:1fr}}
.actions{display:flex;gap:10px;align-items:center;margin-top:22px;flex-wrap:wrap}

.msg{padding:12px 14px;border-radius:10px;font-size:14px;margin-bottom:20px;
  border:1px solid #c9f2dc;background:#f0fdf6;color:#0f8a52}
.msg.err{border-color:#ffd4db;background:#fff2f4;color:#c8324a}
.toolbar{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-bottom:20px}
.toolbar .search{display:flex;gap:8px;margin-left:auto}
.toolbar input[type=text]{height:38px;padding:0 14px;border:1px solid var(--line);
  border-radius:10px;background:#fff;font-size:14px;outline:none;min-width:220px}
.toolbar input:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(14,165,233,.10)}

.pager{display:flex;gap:8px;justify-content:flex-end;margin-top:22px;font-size:13.5px}
.pager a,.pager span{min-width:36px;height:36px;padding:0 10px;display:grid;place-items:center;
  border:1px solid var(--line);border-radius:9px;background:#fff}
.pager span.cur{background:linear-gradient(120deg,var(--accent),var(--accent-2));
  color:#04121d;border-color:transparent;font-weight:700}

/* 富文本编辑器 */
.editor{max-width:820px;border:1px solid var(--line);border-radius:12px;overflow:hidden;background:#fff}
.editor-bar{display:flex;gap:4px;flex-wrap:wrap;padding:8px;border-bottom:1px solid var(--line);
  background:#f7fafd}
.editor-bar button{height:32px;min-width:34px;padding:0 10px;border:1px solid transparent;
  border-radius:8px;background:transparent;color:var(--ink-2);font-size:13.5px;cursor:pointer}
.editor-bar button:hover{background:#eef6fc;border-color:#d8ecfa;color:var(--accent)}
.editor-area{min-height:380px;padding:20px 24px;font-size:15.5px;line-height:1.95;outline:none;
  overflow:auto;max-height:640px}
.editor-area h2{font-size:22px;margin:18px 0 10px}
.editor-area h3{font-size:18px;margin:16px 0 8px}
.editor-area p{margin:10px 0}
.editor-area ul,.editor-area ol{padding-left:24px}
.editor-area blockquote{margin:14px 0;padding:12px 16px;border-left:3px solid var(--accent-2);
  background:#f5fbff;color:var(--ink-2)}
.editor-area code{background:#eef6fc;padding:2px 6px;border-radius:5px;font-size:13.5px}

/* 后台登录 */
.alogin{min-height:100vh;display:grid;place-items:center;padding:40px 20px;
  background:radial-gradient(1000px 600px at 20% -10%,#0c2b44,#070f1a 60%,#050a12)}
.alogin-card{width:100%;max-width:430px;background:rgba(13,22,34,.9);border:1px solid rgba(90,180,220,.18);
  border-radius:18px;padding:38px 34px 32px;color:#dbe7f3;box-shadow:0 30px 80px rgba(0,0,0,.55)}
.alogin-card h1{font-size:22px;color:#fff}
.alogin-card .sub{color:#7f93a8;font-size:13px;margin:6px 0 24px}
.alogin-card label{display:block;font-size:13px;color:#9db2c6;margin:14px 0 6px}
.alogin-card input{width:100%;height:42px;padding:0 12px;border-radius:10px;
  border:1px solid rgba(120,160,190,.22);background:#0a1420;color:#e6f1fb;font-size:14px;outline:none}
.alogin-card input:focus{border-color:#22d3ee;box-shadow:0 0 0 3px rgba(34,211,238,.12)}
.alogin-card .btn{width:100%;height:44px;margin-top:22px;background:linear-gradient(120deg,#0ea5e9,#22d3ee);
  color:#04121d;border:0;border-radius:11px;font-size:15px;font-weight:700}
.alogin-card .err{background:rgba(255,93,115,.12);border:1px solid rgba(255,93,115,.35);
  color:#ff9fb0;font-size:13px;padding:10px 12px;border-radius:10px}
.alogin-card .back{margin-top:18px;text-align:center;font-size:13px}
.alogin-card .back a{color:#7fe3f5}

@media(max-width:900px){
  .layout{grid-template-columns:1fr}
  .side{position:static;height:auto;flex-direction:row;flex-wrap:wrap;gap:4px;padding:14px}
  .side-brand{padding:0 8px 0 4px}
  .side .spacer,.side .foot,.side-tag{display:none}
  .main{padding:22px 18px 50px}
}