:root {
  --bg: #f4f6fb;
  --sidebar: #ffffff;
  --card: #ffffff;
  --text: #2b2f36;
  --muted: #8a93a3;
  --line: #e6eaf2;
  --accent: #e03e3e;
  --accent-soft: #ffe8e8;
  --shadow: 0 8px 24px rgba(31, 41, 55, 0.06);
  --header: 64px;
  --sidebar-w: 220px;
  --radius: 14px;
}

html.io-black-mode {
  --bg: #1b1d21;
  --sidebar: #23262c;
  --card: #2b2f36;
  --text: #f3f5f8;
  --muted: #9aa3b2;
  --line: #3a404a;
  --accent-soft: #4a2424;
  --shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  min-height: 100vh;
  color: var(--text);
  background: var(--bg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
  line-height: 1.55;
}

a { color: inherit; text-decoration: none; }
button, input { font: inherit; }
img { max-width: 100%; }

.sidebar {
  position: fixed;
  inset: 0 auto 0 0;
  width: var(--sidebar-w);
  background: var(--sidebar);
  border-right: 1px solid var(--line);
  z-index: 40;
  display: flex;
  flex-direction: column;
  transition: width .2s ease, transform .2s ease;
}

.sidebar.collapsed { width: 72px; }
.sidebar.collapsed .brand-text,
.sidebar.collapsed .nav-label,
.sidebar.collapsed .side-foot span { display: none; }
.sidebar.collapsed .brand { justify-content: center; padding: 16px 8px; }
.sidebar.collapsed .nav-item { justify-content: center; padding: 10px 0; }

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 16px 18px;
  border-bottom: 1px solid var(--line);
  font-weight: 800;
  letter-spacing: .02em;
}
.brand img { width: 36px; height: 36px; border-radius: 10px; }
.nav {
  flex: 1;
  overflow: auto;
  padding: 12px 10px;
}
.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 10px;
  color: var(--text);
  margin-bottom: 4px;
}
.nav-item:hover, .nav-item.active { background: var(--accent-soft); color: var(--accent); }
.nav-icon { width: 22px; text-align: center; font-size: 14px; }
.side-foot {
  border-top: 1px solid var(--line);
  padding: 12px;
}
.side-foot a {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border-radius: 10px;
  color: var(--muted);
}
.side-foot a:hover { background: var(--bg); color: var(--text); }

.main {
  margin-left: var(--sidebar-w);
  min-height: 100vh;
  transition: margin-left .2s ease;
}
.sidebar.collapsed ~ .main { margin-left: 72px; }

.topbar {
  position: sticky;
  top: 0;
  z-index: 30;
  height: var(--header);
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 20px;
  background: color-mix(in srgb, var(--bg) 86%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.icon-btn.theme { width: auto; padding: 0 12px; font-size: 13px; font-weight: 700; }
.mobile-only { display: none; }
.top-title { font-weight: 700; }
.top-actions { margin-left: auto; display: flex; gap: 8px; }

.search-wrap {
  padding: 28px 24px 8px;
  max-width: 980px;
  margin: 0 auto;
}
.search-tabs {
  display: flex;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}
.search-tabs button {
  border: 0;
  background: transparent;
  color: var(--muted);
  padding: 6px 12px;
  border-radius: 999px;
  cursor: pointer;
}
.search-tabs button.active {
  background: var(--card);
  color: var(--accent);
  box-shadow: var(--shadow);
}
.search-box {
  display: flex;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 999px;
  overflow: hidden;
  box-shadow: var(--shadow);
}
.search-box input {
  flex: 1;
  border: 0;
  outline: 0;
  padding: 14px 20px;
  background: transparent;
  color: var(--text);
}
.search-box button {
  border: 0;
  background: var(--accent);
  color: #fff;
  padding: 0 22px;
  cursor: pointer;
  font-weight: 700;
}
.engine-row {
  display: flex;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 10px;
}
.engine-row label {
  color: var(--muted);
  font-size: 13px;
  cursor: pointer;
}
.engine-row input { display: none; }
.engine-row input:checked + span { color: var(--accent); font-weight: 700; }

.content {
  padding: 12px 24px 48px;
  max-width: 1480px;
  margin: 0 auto;
}
.section-title {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 28px 0 14px;
  font-size: 18px;
}
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 14px;
}
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 14px;
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 84px;
  position: relative;
  transition: transform .15s ease, border-color .15s ease;
}
.card:hover { transform: translateY(-2px); border-color: color-mix(in srgb, var(--accent) 35%, var(--line)); }
.logo {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  object-fit: cover;
  background: var(--bg);
  flex: none;
}
.logo.fallback {
  display: grid;
  place-items: center;
  color: #fff;
  font-weight: 800;
  background: var(--accent);
}
.meta { min-width: 0; flex: 1; }
.meta strong {
  display: block;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.meta p {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 12px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.go {
  position: absolute;
  right: 10px;
  top: 10px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  color: var(--muted);
  display: grid;
  place-items: center;
  font-size: 12px;
}
.go:hover { color: var(--accent); background: var(--accent-soft); }
.footer {
  text-align: center;
  color: var(--muted);
  padding: 24px;
  font-size: 13px;
}

.page {
  max-width: 760px;
  margin: 0 auto;
  padding: 32px 20px 60px;
}
.hero-card, .panel {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 20px;
  box-shadow: var(--shadow);
  padding: 28px;
}
.hero-card { display: flex; gap: 18px; align-items: center; }
.hero-card img, .hero-fallback {
  width: 72px; height: 72px; border-radius: 18px; object-fit: cover;
}
.hero-fallback {
  display: grid; place-items: center; background: var(--accent); color: #fff; font-size: 28px; font-weight: 800;
}
.tags { display: flex; gap: 8px; flex-wrap: wrap; margin: 12px 0 18px; }
.tag {
  background: var(--accent-soft);
  color: var(--accent);
  border-radius: 999px;
  padding: 4px 10px;
  font-size: 12px;
  font-weight: 700;
}
.actions { display: flex; gap: 10px; flex-wrap: wrap; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 16px;
  border-radius: 12px;
  background: var(--accent);
  color: #fff;
  font-weight: 700;
}
.btn.ghost {
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--line);
}
.notice {
  margin-top: 18px;
  color: var(--muted);
  background: var(--bg);
  border-radius: 12px;
  padding: 12px 14px;
}
.form-grid { display: grid; gap: 14px; margin-top: 18px; }
.field { display: grid; gap: 6px; font-size: 14px; font-weight: 600; }
.field input, .field textarea, .field select {
  border: 1px solid var(--line);
  background: var(--bg);
  color: var(--text);
  border-radius: 12px;
  padding: 10px 12px;
  font: inherit;
  font-weight: 400;
}
.hp { position: absolute; left: -9999px; height: 0; overflow: hidden; }
.admin-page { max-width: 860px; }
.admin-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.admin-tabs { display: flex; gap: 8px; margin: 16px 0; flex-wrap: wrap; }
.admin-tabs button {
  border: 1px solid var(--line);
  background: var(--bg);
  color: var(--text);
  border-radius: 999px;
  padding: 6px 14px;
  cursor: pointer;
}
.admin-tabs button.active { background: var(--accent); color: #fff; border-color: var(--accent); }
.app-card {
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 16px;
  margin: 12px 0;
  background: var(--bg);
}
.app-card p { margin: 8px 0; }
.app-card .muted { color: var(--muted); font-size: 13px; }
button:disabled { opacity: .6; cursor: not-allowed; }

.mask {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.35);
  z-index: 35;
}

@media (max-width: 860px) {
  .sidebar {
    transform: translateX(-105%);
    width: min(80vw, 280px);
  }
  .sidebar.open { transform: none; }
  .sidebar.collapsed { width: min(80vw, 280px); }
  .main, .sidebar.collapsed ~ .main { margin-left: 0; }
  .mobile-only { display: inline-flex; }
  .content, .search-wrap { padding-left: 14px; padding-right: 14px; }
  .grid { grid-template-columns: 1fr 1fr; }
  .mask.show { display: block; }
}

@media (max-width: 560px) {
  .grid { grid-template-columns: 1fr; }
}