:root {
  --bg: #f7f9fc;
  --surface: #ffffff;
  --border: #e6ebf2;
  --text: #1f2937;
  --text-secondary: #6b7280;
  --accent: #3b82f6;
  --accent-soft: #eff4ff;
  --shadow: 0 1px 2px rgba(16, 24, 40, 0.04), 0 4px 16px rgba(16, 24, 40, 0.06);
  --radius: 14px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1419;
    --surface: #171e26;
    --border: #232d38;
    --text: #e6edf3;
    --text-secondary: #8b98a5;
    --accent: #5b9dff;
    --accent-soft: #1b2a3d;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 4px 16px rgba(0, 0, 0, 0.35);
  }
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.page {
  max-width: 1080px;
  margin: 0 auto;
  padding: 48px 24px 24px;
}

/* ---------- Hero ---------- */
.hero {
  text-align: center;
  padding: 24px 0 32px;
}

.hero-avatar svg {
  border-radius: 50%;
  box-shadow: var(--shadow);
}

.hero-name {
  margin-top: 16px;
  font-size: 30px;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.hero-role {
  margin-top: 6px;
  font-size: 16px;
  color: var(--accent);
  font-weight: 500;
}

.hero-desc {
  margin-top: 8px;
  font-size: 14px;
  color: var(--text-secondary);
}

.hero-social {
  margin-top: 18px;
  display: flex;
  justify-content: center;
  gap: 12px;
}

.hero-social a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  transition: all 0.2s ease;
}

.hero-social a:hover {
  color: var(--accent);
  border-color: var(--accent);
  transform: translateY(-2px);
}

/* ---------- Search ---------- */
.search {
  max-width: 640px;
  margin: 8px auto 40px;
}

.search-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 10px 18px;
  box-shadow: var(--shadow);
  transition: border-color 0.2s ease;
}

.search-bar:focus-within {
  border-color: var(--accent);
}

.search-bar svg {
  color: var(--text-secondary);
  flex-shrink: 0;
}

.search-bar input {
  flex: 1;
  border: none;
  outline: none;
  background: transparent;
  font-size: 14px;
  color: var(--text);
  min-width: 0;
}

.search-bar input::placeholder {
  color: var(--text-secondary);
}

.search-engine {
  display: flex;
  gap: 2px;
  flex-wrap: wrap;
}

.search-engine label {
  display: inline-flex;
  align-items: center;
  cursor: pointer;
}

.search-engine input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.search-engine span {
  font-size: 12px;
  color: var(--text-secondary);
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid transparent;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.search-engine input:checked + span {
  background: var(--accent-soft);
  color: var(--accent);
  border-color: var(--accent);
}

/* ---------- Sections ---------- */
.nav-section {
  margin-bottom: 36px;
}

.section-title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.section-title::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--border);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 14px;
}

.site-card {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  text-decoration: none;
  color: var(--text);
  transition: all 0.2s ease;
}

.site-card:hover {
  transform: translateY(-3px);
  border-color: var(--accent);
  box-shadow: 0 6px 20px rgba(59, 130, 246, 0.12);
}

.site-icon {
  flex-shrink: 0;
  width: 38px;
  height: 38px;
  border-radius: 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 16px;
  color: #fff;
  user-select: none;
}

.site-info {
  min-width: 0;
}

.site-name {
  font-size: 15px;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.site-desc {
  font-size: 12px;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ---------- Footer ---------- */
.footer {
  text-align: center;
  padding: 32px 0 16px;
  font-size: 13px;
  color: var(--text-secondary);
}

@media (max-width: 560px) {
  .page {
    padding: 32px 16px 16px;
  }

  .search-bar {
    flex-wrap: wrap;
    border-radius: 18px;
    padding: 12px 16px;
  }

  .search-engine {
    width: 100%;
    justify-content: flex-start;
    padding-left: 28px;
  }

  .card-grid {
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }

  .site-card {
    padding: 12px;
  }

  .hero-name {
    font-size: 26px;
  }
}