:root {
  --bg: #0f172a;
  --card: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --accent: #4f46e5;
  --accent2: #0ea5e9;
  --line: #e5e7eb;
  --radius: 14px;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: linear-gradient(180deg, #0f172a 0%, #1e293b 240px, #f1f5f9 240px, #f1f5f9 100%);
  color: var(--text);
  min-height: 100vh;
}
.hero {
  color: #fff;
  padding: 48px 24px 28px;
  max-width: 980px;
  margin: 0 auto;
}
.hero h1 { margin: 0; font-size: 32px; }
.hero .sub { margin: 8px 0 0; color: #cbd5e1; }
.hero .back { color: #c7d2fe; text-decoration: none; font-size: 14px; }
.container { max-width: 980px; margin: 0 auto; padding: 0 24px 48px; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 16px; }
.card {
  display: flex; gap: 14px; align-items: flex-start;
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 16px; text-decoration: none; color: inherit;
  transition: transform .15s, box-shadow .15s;
}
.card:hover { transform: translateY(-2px); box-shadow: 0 10px 25px rgba(15,23,42,.08); }
.card .icon { font-size: 30px; width: 44px; height: 44px; display: flex; align-items: center; justify-content: center; background: #eef2ff; border-radius: 10px; flex-shrink: 0; overflow: hidden; }
.card .icon img { width: 100%; height: 100%; object-fit: cover; }
.card h3 { margin: 0 0 4px; font-size: 16px; }
.card .app-id { font-size: 12px; color: var(--muted); font-family: ui-monospace, SFMono-Regular, monospace; margin-bottom: 6px; }
.card p { margin: 0 0 8px; font-size: 13px; color: var(--muted); line-height: 1.4; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.card .ver { font-size: 13px; color: var(--accent); font-weight: 600; }
.card .ver.none { color: var(--muted); font-weight: 400; }
.empty { grid-column: 1 / -1; background: #fff; border: 1px dashed var(--line); border-radius: var(--radius); padding: 32px; text-align: center; color: var(--muted); }
.foot { max-width: 980px; margin: 0 auto; padding: 0 24px 40px; color: #94a3b8; font-size: 13px; }
code { background: #1e293b; color: #e2e8f0; padding: 2px 6px; border-radius: 5px; font-family: ui-monospace, SFMono-Regular, monospace; font-size: .92em; }
.meta { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 18px; margin-bottom: 24px; }
.meta-row { display: flex; gap: 12px; padding: 6px 0; align-items: center; font-size: 14px; }
.meta-row span:first-child { color: var(--muted); min-width: 80px; }
.meta-row code { background: #eef2ff; color: var(--accent); }
h2 { font-size: 18px; margin: 24px 0 12px; }
.vt { width: 100%; border-collapse: collapse; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; font-size: 13px; }
.vt th, .vt td { padding: 10px 12px; text-align: left; border-bottom: 1px solid var(--line); }
.vt th { background: #f8fafc; color: var(--muted); font-weight: 600; }
.vt tr:last-child td { border-bottom: none; }
.btn { display: inline-block; background: var(--accent); color: #fff; padding: 6px 14px; border-radius: 8px; text-decoration: none; font-size: 13px; font-weight: 600; }
.btn.sm { padding: 4px 10px; font-size: 12px; }
.btn:hover { background: #4338ca; }
.api-box { margin-top: 32px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 18px; }
.api-box h3 { margin: 0 0 8px; font-size: 15px; }
.api-box p { margin: 4px 0; font-size: 13px; }
.api-box .muted { color: var(--muted); }

/* ===== 导航栏 ===== */
.navbar {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  max-width: 980px; margin: 0 auto; padding: 10px 24px;
  background: rgba(15,23,42,.85); backdrop-filter: blur(8px); border-bottom: 1px solid rgba(255,255,255,.08);
}
.navbar .brand { color: #fff; font-weight: 700; text-decoration: none; font-size: 15px; }
.navbar .nav-links { display: flex; gap: 18px; }
.navbar .nav-links a { color: #cbd5e1; text-decoration: none; font-size: 14px; }
.navbar .nav-links a.active { color: #fff; font-weight: 600; }
.navbar .nav-links a:hover { color: #fff; }
/* 去掉 hero 顶部留白，导航已占位 */
.hero { padding-top: 24px; }

/* ===== 表单 ===== */
.form-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 20px 22px; margin-bottom: 20px; }
.form-card h2 { margin: 0 0 4px; font-size: 17px; }
.form-card .desc { color: var(--muted); font-size: 13px; margin: 0 0 14px; }
.field { margin-bottom: 14px; }
.field label { display: block; font-size: 13px; color: var(--text); margin-bottom: 5px; font-weight: 600; }
.field input, .field textarea, .field select {
  width: 100%; padding: 9px 11px; border: 1px solid var(--line); border-radius: 9px;
  font-size: 14px; font-family: inherit; background: #fff; color: var(--text);
}
.field input:focus, .field textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(79,70,229,.12); }
.field .hint { font-size: 12px; color: var(--muted); margin-top: 4px; }
.field code.inline { background: #eef2ff; color: var(--accent); padding: 2px 6px; border-radius: 5px; font-size: 12px; }
.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
@media (max-width: 600px) { .row2 { grid-template-columns: 1fr; } }
button.primary, .btn.primary {
  background: var(--accent); color: #fff; border: none; padding: 10px 18px; border-radius: 9px;
  font-size: 14px; font-weight: 600; cursor: pointer;
}
button.primary:hover, .btn.primary:hover { background: #4338ca; }
button.primary:disabled { opacity: .55; cursor: not-allowed; }
button.ghost { background: #eef2ff; color: var(--accent); border: 1px solid #e0e7ff; padding: 8px 14px; border-radius: 8px; font-size: 13px; cursor: pointer; }
button.ghost.ok { background: #dcfce7; color: #15803d; border-color: #bbf7d0; }

/* ===== 提示/状态 ===== */
.alert { padding: 11px 14px; border-radius: 9px; font-size: 13px; margin-bottom: 14px; }
.alert.err { background: #fef2f2; color: #b91c1c; border: 1px solid #fecaca; }
.alert.ok { background: #f0fdf4; color: #15803d; border: 1px solid #bbf7d0; }
.alert.info { background: #eff6ff; color: #1d4ed8; border: 1px solid #bfdbfe; }
.muted { color: var(--muted); }
.tag { display: inline-block; font-size: 11px; padding: 2px 8px; border-radius: 999px; background: #ecfdf5; color: #047857; font-weight: 600; margin-left: 6px; }
.tag.gray { background: #f1f5f9; color: var(--muted); }

/* ===== 登录页 ===== */
.center-wrap { max-width: 400px; margin: 60px auto; padding: 0 24px; }
.login-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 28px 26px; }
.login-card h1 { font-size: 22px; margin: 0 0 6px; }
.login-card .sub { color: var(--muted); font-size: 13px; margin: 0 0 18px; }

/* check-update URL 展示框 */
.url-box { background: #0f172a; color: #e2e8f0; border-radius: 9px; padding: 12px 14px; font-family: ui-monospace, SFMono-Regular, monospace; font-size: 12.5px; word-break: break-all; display: flex; gap: 10px; align-items: flex-start; }
.url-box .copy { flex-shrink: 0; }

/* ===== 危险操作按钮（删除） ===== */
button.danger, .btn.danger { background: #dc2626; color: #fff; border: none; padding: 9px 16px; border-radius: 9px; font-size: 13px; font-weight: 600; cursor: pointer; }
.btn.danger.sm { padding: 4px 10px; font-size: 12px; }
button.danger:hover, .btn.danger:hover { background: #b91c1c; }
button.danger:disabled, .btn.danger:disabled { opacity: .55; cursor: not-allowed; }
.row2.actions { display: flex; gap: 10px; }