:root {
  --accent: #6d8bff;
  --accent-2: #46d5c8;
  --radius: 18px;
  --maxw: 1180px;
  --shadow: 0 10px 30px rgba(8, 12, 30, .35);
  --transition: .25s cubic-bezier(.4, 0, .2, 1);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", Roboto, Helvetica, Arial, sans-serif;
}

html[data-theme="dark"] {
  --bg: #080b16;
  --bg-soft: #0e1326;
  --surface: rgba(255, 255, 255, .055);
  --surface-hover: rgba(255, 255, 255, .1);
  --border: rgba(255, 255, 255, .1);
  --border-strong: rgba(255, 255, 255, .18);
  --text: #eef1fb;
  --text-dim: #9aa3bd;
  --text-faint: #6b7492;
  --blob-1: #2b3ff0;
  --blob-2: #00b3a4;
  --blob-3: #7a2bf0;
}

html[data-theme="light"] {
  --bg: #f2f5fc;
  --bg-soft: #ffffff;
  --surface: rgba(255, 255, 255, .75);
  --surface-hover: rgba(255, 255, 255, .95);
  --border: rgba(20, 30, 70, .1);
  --border-strong: rgba(20, 30, 70, .18);
  --text: #131a2e;
  --text-dim: #4f5a78;
  --text-faint: #818aa6;
  --blob-1: #9db4ff;
  --blob-2: #9be8e0;
  --blob-3: #cbb4ff;
  --shadow: 0 10px 30px rgba(40, 60, 130, .12);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  transition: background var(--transition), color var(--transition);
}

a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }

/* ---------- 背景装饰 ---------- */
.bg-decor {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
}
.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: .5;
  animation: float 18s ease-in-out infinite;
}
.blob-1 { width: 480px; height: 480px; background: var(--blob-1); top: -160px; left: -120px; }
.blob-2 { width: 420px; height: 420px; background: var(--blob-2); top: 30%; right: -140px; animation-delay: -6s; }
.blob-3 { width: 460px; height: 460px; background: var(--blob-3); bottom: -180px; left: 30%; animation-delay: -12s; }

@keyframes float {
  0%, 100% { transform: translate3d(0, 0, 0) scale(1); }
  50% { transform: translate3d(30px, -40px, 0) scale(1.08); }
}
@media (prefers-reduced-motion: reduce) {
  .blob { animation: none; }
  html { scroll-behavior: auto; }
}

/* ---------- 顶栏 ---------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  background: color-mix(in srgb, var(--bg) 72%, transparent);
  border-bottom: 1px solid var(--border);
}
.topbar-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 14px 22px;
  display: flex;
  align-items: center;
  gap: 18px;
}

.brand { display: flex; align-items: center; gap: 12px; flex: 0 0 auto; }
.brand-mark {
  width: 40px; height: 40px;
  display: grid; place-items: center;
  border-radius: 13px;
  font-size: 20px; font-weight: 700; color: #fff;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 6px 18px color-mix(in srgb, var(--accent) 45%, transparent);
}
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-text strong { font-size: 17px; letter-spacing: .2px; }
.brand-text small { color: var(--text-faint); font-size: 12px; }

.search {
  position: relative;
  flex: 1 1 auto;
  max-width: 560px;
  margin-left: auto;
  display: flex;
  align-items: center;
}
.search svg {
  position: absolute; left: 14px; width: 18px; height: 18px; color: var(--text-faint);
}
.search input {
  width: 100%;
  padding: 11px 60px 11px 42px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-size: 15px;
  outline: none;
  transition: border-color var(--transition), background var(--transition), box-shadow var(--transition);
}
.search input::placeholder { color: var(--text-faint); }
.search input:focus {
  border-color: var(--border-strong);
  background: var(--surface-hover);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 22%, transparent);
}
.search input::-webkit-search-cancel-button { display: none; }
.search-clear {
  position: absolute; right: 44px;
  border: none; background: none; color: var(--text-faint);
  font-size: 20px; line-height: 1; padding: 0 6px;
}
.search-clear:hover { color: var(--text); }
.search-kbd {
  position: absolute; right: 14px;
  font-size: 11px; color: var(--text-faint);
  border: 1px solid var(--border);
  border-radius: 6px; padding: 2px 7px;
}
.search:focus-within .search-kbd { opacity: 0; }

.icon-btn {
  width: 42px; height: 42px; flex: 0 0 auto;
  display: grid; place-items: center;
  border-radius: 13px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-dim);
  transition: all var(--transition);
}
.icon-btn:hover { background: var(--surface-hover); color: var(--text); border-color: var(--border-strong); }
.icon-btn svg { width: 20px; height: 20px; }
.icon-sun { display: none; }
html[data-theme="light"] .icon-sun { display: block; }
html[data-theme="light"] .icon-moon { display: none; }

/* ---------- 分类导航 ---------- */
.cat-nav {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 22px 12px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
}
.cat-nav::-webkit-scrollbar { display: none; }
.chip {
  flex: 0 0 auto;
  padding: 7px 15px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-dim);
  font-size: 13.5px;
  white-space: nowrap;
  transition: all var(--transition);
}
.chip:hover { color: var(--text); background: var(--surface-hover); border-color: var(--border-strong); }
.chip.active {
  color: #fff;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border-color: transparent;
}

/* ---------- 主体 ---------- */
.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 30px 22px 60px;
}

.section { margin-bottom: 40px; scroll-margin-top: 140px; }
.section-head {
  display: flex; align-items: baseline; gap: 10px;
  margin-bottom: 16px;
}
.section-head h2 {
  font-size: 20px; margin: 0; letter-spacing: .3px;
  display: flex; align-items: center; gap: 9px;
}
.section-head h2 .sec-icon {
  width: 30px; height: 30px; display: grid; place-items: center;
  border-radius: 9px; font-size: 15px;
  background: var(--surface); border: 1px solid var(--border);
  color: var(--accent);
}
.section-head .count { color: var(--text-faint); font-size: 13px; }

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

.card {
  position: relative;
  display: flex; align-items: center; gap: 13px;
  padding: 15px 16px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: transform var(--transition), border-color var(--transition), background var(--transition), box-shadow var(--transition);
  overflow: hidden;
}
.card::after {
  content: "";
  position: absolute; inset: 0;
  border-radius: inherit;
  background: linear-gradient(135deg, color-mix(in srgb, var(--accent) 14%, transparent), transparent 60%);
  opacity: 0;
  transition: opacity var(--transition);
  pointer-events: none;
}
.card:hover {
  transform: translateY(-3px);
  border-color: var(--border-strong);
  background: var(--surface-hover);
  box-shadow: var(--shadow);
}
.card:hover::after { opacity: 1; }

.card-icon {
  width: 40px; height: 40px; flex: 0 0 auto;
  border-radius: 11px;
  display: grid; place-items: center;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  overflow: hidden;
  font-weight: 700; color: var(--accent); font-size: 17px;
}
.card-icon img { width: 24px; height: 24px; object-fit: contain; }

.card-body { min-width: 0; }
.card-name {
  font-size: 15px; font-weight: 600;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.card-desc {
  font-size: 12.5px; color: var(--text-faint);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  margin-top: 2px;
}

/* ---------- 最近访问 ---------- */
.recent { margin-bottom: 40px; }
.recent .section-head h2 { font-size: 17px; }
.link-btn {
  margin-left: auto;
  border: none; background: none;
  color: var(--text-faint); font-size: 13px;
}
.link-btn:hover { color: var(--accent); }

/* ---------- 空状态 ---------- */
.empty { text-align: center; padding: 70px 20px; color: var(--text-dim); }
.empty-title { font-size: 18px; margin: 0 0 8px; }
.empty-desc { margin: 0; color: var(--text-faint); font-size: 14px; }

/* ---------- 页脚 ---------- */
.footer {
  text-align: center;
  padding: 26px 20px 40px;
  color: var(--text-faint);
  font-size: 13px;
  border-top: 1px solid var(--border);
}
.footer code {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 1px 6px; border-radius: 6px;
  font-size: 12.5px;
}

/* ---------- 响应式 ---------- */
@media (max-width: 720px) {
  .topbar-inner { flex-wrap: wrap; padding: 12px 16px; gap: 12px; }
  .brand-text small { display: none; }
  .search { order: 3; flex-basis: 100%; max-width: none; margin-left: 0; }
  .cat-nav { padding: 0 16px 12px; }
  .container { padding: 22px 16px 50px; }
  .grid { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 11px; }
  .card { padding: 13px; gap: 11px; }
  .card-icon { width: 36px; height: 36px; }
  .card-desc { display: none; }
}