/* Omnia Model Hub · 全局灰色主题（浅色） */
:root {
  --bg: #f3f4f6;
  --bg-deep: #e9ebee;
  --surface: #ffffff;
  --surface-2: #f8f9fa;
  --border: #dfe3e8;
  --border-strong: #c9cfd7;
  --text: #1f2933;
  --text-2: #4b5563;
  --muted: #77818e;
  --primary: #0b2b4e;
  --primary-hover: #08203a;
  --primary-soft: #e8eef5;
  --accent: #17698f;
  --brand-cyan: #12a5cf;
  --danger: #a33a3a;
  --success: #2f6b4f;
  --warn: #8a6327;
  --radius: 10px;
  --shadow: 0 1px 2px rgba(16, 24, 40, .04), 0 4px 14px rgba(16, 24, 40, .05);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans SC", "Microsoft YaHei", Roboto, Helvetica, Arial, sans-serif;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg); color: var(--text); font-family: var(--font);
  font-size: 14px; line-height: 1.65; -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3, h4 { line-height: 1.3; margin: 0 0 12px; font-weight: 650; letter-spacing: -.01em; }
h1 { font-size: 34px; } h2 { font-size: 21px; } h3 { font-size: 16px; }
p { margin: 0 0 12px; color: var(--text-2); }
ul { margin: 8px 0 16px; padding-left: 20px; color: var(--text-2); }
li { margin-bottom: 6px; }
small { color: var(--muted); }

.site-wrap { max-width: 1160px; margin: 0 auto; padding: 0 24px; }
.site-header {
  background: var(--surface); border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 20;
}
.header-inner { display: flex; align-items: center; gap: 22px; height: 66px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; color: var(--text); font-size: 16px; white-space: nowrap; }
.brand:hover { text-decoration: none; }
.brand-logo {
  width: 30px; height: 30px; flex: 0 0 30px; display: block;
  object-fit: contain; border-radius: 6px;
}
.brand-logo-sm { width: 20px; height: 20px; flex-basis: 20px; }
.auth-card .brand-logo { width: 38px; height: 38px; flex-basis: 38px; }
.footer-brand { display: flex; align-items: center; gap: 9px; margin-bottom: 8px; }
.site-nav { display: flex; gap: 3px; flex: 1; flex-wrap: wrap; }
.nav-link { color: var(--text-2); padding: 6px 9px; border-radius: 7px; font-size: 13px; white-space: nowrap; }
.nav-link:hover { background: var(--bg-deep); text-decoration: none; color: var(--text); }
.nav-link.active { color: var(--primary); background: var(--bg-deep); font-weight: 600; }
.header-actions { display: flex; align-items: center; gap: 10px; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 7px;
  padding: 8px 15px; border-radius: 8px; border: 1px solid var(--border-strong);
  background: var(--surface); color: var(--text); font: inherit; font-size: 13px;
  cursor: pointer; white-space: nowrap; transition: background .15s, border-color .15s;
}
.btn:hover { background: var(--bg-deep); text-decoration: none; }
.btn-primary { background: var(--primary); border-color: var(--primary); color: #fff; font-weight: 600; }
.btn-primary:hover { background: var(--primary-hover); border-color: var(--primary-hover); }
.btn-ghost { background: transparent; }
.btn-danger { color: var(--danger); border-color: #e3c4c4; }
.btn-sm { padding: 5px 10px; font-size: 12px; }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.lang-btn {
  display: inline-flex; align-items: center; gap: 6px; padding: 7px 11px;
  border: 1px solid var(--border-strong); border-radius: 8px; background: var(--surface);
  color: var(--text-2); font: inherit; font-size: 13px; cursor: pointer;
}
.lang-btn:hover { background: var(--bg-deep); color: var(--text); }

.hero { padding: 58px 0 34px; border-bottom: 1px solid var(--border); }
.eyebrow { font-size: 11px; letter-spacing: .16em; color: var(--muted); font-weight: 700; margin-bottom: 14px; }
.hero h1 { max-width: 880px; }
.hero .lead { font-size: 17px; max-width: 900px; color: var(--text-2); }
.hero-actions { display: flex; gap: 10px; margin-top: 22px; }
.content-layout { display: grid; grid-template-columns: minmax(0, 1fr); gap: 0; padding: 12px 0 44px; }
.content-section { padding: 22px 0 8px; border-bottom: 1px solid var(--border); max-width: 940px; }
.content-section:last-child { border-bottom: 0; }
.disclosure { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 22px 24px; margin-top: 28px; }
.faq-item { padding: 14px 0; border-bottom: 1px dashed var(--border); }
.faq-item h3 { margin-bottom: 6px; }
.faq-item:last-child { border-bottom: 0; }
.site-footer { background: var(--bg-deep); border-top: 1px solid var(--border); margin-top: 30px; padding: 34px 0; }
.footer-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 18px 40px; }
.footer-inner p { max-width: 560px; font-size: 13px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 8px 18px; align-content: start; }
.footer-meta { grid-column: 1 / -1; color: var(--muted); font-size: 12px; }

/* 控制台 / 管理后台通用框架 */
.app-shell { display: flex; min-height: 100vh; }
.sidebar {
  width: 224px; flex: 0 0 224px; background: var(--surface);
  border-right: 1px solid var(--border); padding: 18px 12px; position: sticky; top: 0; height: 100vh; overflow-y: auto;
}
.sidebar .brand { padding: 0 8px 18px; font-size: 14px; }
.side-group { font-size: 11px; color: var(--muted); letter-spacing: .1em; padding: 16px 10px 6px; font-weight: 700; }
.side-link {
  display: block; padding: 8px 11px; border-radius: 7px; color: var(--text-2);
  font-size: 13px; cursor: pointer; border: 0; background: none; width: 100%; text-align: left; font-family: inherit;
}
.side-link:hover { background: var(--bg-deep); color: var(--text); text-decoration: none; }
.side-link.active { background: var(--bg-deep); color: var(--primary); font-weight: 650; }
.main-area { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.topbar {
  height: 62px; background: var(--surface); border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between; padding: 0 26px; gap: 16px;
}
.topbar h2 { margin: 0; font-size: 17px; }
.topbar-right { display: flex; align-items: center; gap: 12px; }
.topbar .who { font-size: 13px; color: var(--muted); }
.content { padding: 26px; max-width: 1400px; width: 100%; }
.card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 20px; margin-bottom: 18px;
}
.card h3 { margin-bottom: 12px; }
.card .hint { color: var(--muted); font-size: 12px; margin-bottom: 14px; }
.grid { display: grid; gap: 16px; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.stat { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px 20px; }
.stat .label { font-size: 12px; color: var(--muted); }
.stat .value { font-size: 25px; font-weight: 700; margin-top: 6px; letter-spacing: -.02em; }
.stat .sub { font-size: 12px; color: var(--muted); margin-top: 4px; }

.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); }
table { width: 100%; border-collapse: collapse; font-size: 12.5px; }
th, td { padding: 9px 12px; text-align: left; border-bottom: 1px solid var(--border); white-space: nowrap; }
th { background: var(--surface-2); color: var(--text-2); font-weight: 650; position: sticky; top: 0; }
tr:last-child td { border-bottom: 0; }
tr:hover td { background: #fafbfc; }
td.mono { font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: 11.5px; color: var(--text-2); }
.badge { display: inline-block; padding: 2px 8px; border-radius: 20px; font-size: 11px; background: var(--bg-deep); color: var(--text-2); }
.badge.ok { background: #e6f2eb; color: var(--success); }
.badge.warn { background: #f7eddc; color: var(--warn); }
.badge.bad { background: #f6e5e5; color: var(--danger); }

label { display: block; font-size: 12px; color: var(--text-2); margin-bottom: 5px; font-weight: 600; }
input, select, textarea {
  width: 100%; padding: 9px 11px; border: 1px solid var(--border-strong); border-radius: 8px;
  background: var(--surface); color: var(--text); font: inherit; font-size: 13px; outline: none;
}
input:focus, select:focus, textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(63,107,139,.12); }
textarea { min-height: 96px; resize: vertical; }
.field { margin-bottom: 14px; }
.form-row { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.form-actions { display: flex; gap: 9px; flex-wrap: wrap; margin-top: 8px; }
.notice { padding: 12px 14px; border-radius: 8px; background: var(--surface-2); border: 1px solid var(--border); color: var(--text-2); font-size: 13px; }
.notice.info { background: #eef3f7; border-color: #d3e0ea; }
.notice.warn { background: #faf2e4; border-color: #ecd9b8; }
.notice.error { background: #f9ecec; border-color: #ebcbcb; color: var(--danger); }
.mono-block { font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: 12px; background: var(--surface-2); border: 1px solid var(--border); border-radius: 8px; padding: 12px; word-break: break-all; }
.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.spacer { flex: 1; }
.muted { color: var(--muted); }
.divider { height: 1px; background: var(--border); margin: 18px 0; }
.toolbar { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 14px; align-items: center; }
.toolbar input { width: 220px; }
.checkline { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--text-2); margin-bottom: 6px; }
.checkline input { width: auto; }

/* 登录视图 */
.auth-wrap { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 24px; background: var(--bg-deep); }
.auth-card { width: 100%; max-width: 420px; background: var(--surface); border: 1px solid var(--border); border-radius: 14px; padding: 30px; box-shadow: var(--shadow); }
.auth-card .brand { margin-bottom: 22px; }
.auth-card h1 { font-size: 21px; margin-bottom: 6px; }
.auth-card .hint { color: var(--muted); font-size: 12.5px; margin-bottom: 20px; }
.auth-toggle { display: flex; gap: 6px; background: var(--bg-deep); padding: 4px; border-radius: 9px; margin-bottom: 20px; }
.auth-toggle button { flex: 1; border: 0; background: none; padding: 7px; border-radius: 7px; cursor: pointer; font: inherit; font-size: 13px; color: var(--text-2); }
.auth-toggle button.active { background: var(--surface); color: var(--primary); font-weight: 650; box-shadow: var(--shadow); }
.auth-top { display: flex; justify-content: flex-end; margin-bottom: 14px; }

@media (max-width: 960px) {
  .site-nav { display: none; }
  .grid-4, .grid-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .sidebar { width: 172px; flex-basis: 172px; }
  .footer-inner { grid-template-columns: 1fr; }
}
@media (max-width: 680px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .sidebar { display: none; }
  .content { padding: 16px; }
  h1 { font-size: 26px; }
}