:root {
  --bg-1: #0b0f19;
  --bg-2: #0e1222;
  --glass: rgba(255, 255, 255, 0.08);
  --glass-strong: rgba(255, 255, 255, 0.14);
  --text: #e7ecf3;
  --muted: #97a0af;
  --neon: #7c4dff;
  --neon-2: #00e5ff;
  --accent: #00d4ff;
  --danger: #ff4772;
  --controls-height: 76px; /* 动态更新，作为粘性分组标题的偏移 */
}

* {
  box-sizing: border-box;
}

html, body {
  height: 100%;
}

body {
  margin: 0;
  font-family: "Inter", ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  color: var(--text);
  background: radial-gradient(1200px 800px at 10% 10%, rgba(124, 77, 255, 0.25), transparent 60%),
              radial-gradient(1000px 700px at 90% 20%, rgba(0, 229, 255, 0.25), transparent 60%),
              linear-gradient(180deg, var(--bg-1), var(--bg-2));
  background-attachment: fixed;
}

.bg-effects::before,
.bg-effects::after {
  content: "";
  position: fixed;
  inset: -20vmax;
  background: conic-gradient(from 0deg, rgba(124,77,255,.03), rgba(0,229,255,.03), rgba(255,71,114,.03), rgba(124,77,255,.03));
  filter: blur(40px);
  z-index: -1;
  animation: spin 22s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.site-header {
  padding: 48px 20px 24px;
  text-align: center;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 6px;
}

.logo {
  display: inline-grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(124,77,255,.3), rgba(0,229,255,.3));
  border: 1px solid rgba(255,255,255,.12);
  box-shadow: 0 10px 30px rgba(124,77,255,.35), 0 0 0 1px rgba(255,255,255,.08) inset;
  font-weight: 800;
  letter-spacing: 1px;
}

h1 {
  font-size: 28px;
  letter-spacing: 0.5px;
  margin: 0;
}

.tagline {
  margin: 8px auto 0;
  color: var(--muted);
  max-width: 720px;
}

.controls {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(8px);
  background: linear-gradient(180deg, rgba(11,15,25,.75), rgba(11,15,25,.4));
  border-bottom: 1px solid rgba(255,255,255,.06);
}

/* 当脚本判断需要吸顶时，切换为固定定位并为主体留白 */
.controls.is-fixed {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 40;
}

body.has-fixed-controls {
  padding-top: calc(var(--controls-height) + 12px);
}

.search-box {
  display: flex;
  align-items: center;
  gap: 10px;
  max-width: 980px;
  margin: 16px auto;
  padding: 10px 12px;
  background: var(--glass);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 14px;
  box-shadow: 0 10px 30px rgba(0,0,0,.25), 0 0 0 1px rgba(255,255,255,.06) inset;
}

.search-box input {
  flex: 1;
  font-size: 16px;
  padding: 12px 14px;
  color: var(--text);
  background: transparent;
  border: none;
  outline: none;
}

.clear-btn {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  border: 1px solid rgba(255,255,255,.14);
  background: linear-gradient(135deg, rgba(124,77,255,.2), rgba(0,229,255,.2));
  color: var(--text);
  cursor: pointer;
  transition: transform .12s ease, box-shadow .2s ease;
}

.clear-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 20px rgba(124,77,255,.25), 0 0 0 1px rgba(255,255,255,.08) inset;
}

.category-filter {
  display: flex;
  gap: 8px;
  max-width: 980px;
  margin: 12px auto 8px;
  padding: 0 12px;
  overflow-x: auto;
  justify-content: center;
  flex-wrap: wrap;
}

.category-btn {
  padding: 8px 16px;
  border: 1px solid rgba(255,255,255,.12);
  background: rgba(255,255,255,.04);
  color: var(--text);
  border-radius: 12px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
  transition: all .2s ease;
  white-space: nowrap;
  user-select: none;
}

.category-btn:hover {
  background: rgba(255,255,255,.08);
  border-color: rgba(255,255,255,.18);
  transform: translateY(-1px);
}

.category-btn.active {
  background: linear-gradient(135deg, rgba(124,77,255,.25), rgba(0,229,255,.25));
  border-color: rgba(124,77,255,.4);
  color: #ffffff;
  box-shadow: 0 4px 15px rgba(124,77,255,.3), 0 0 0 1px rgba(255,255,255,.1) inset;
}

.category-btn.active:hover {
  background: linear-gradient(135deg, rgba(124,77,255,.35), rgba(0,229,255,.35));
  box-shadow: 0 6px 20px rgba(124,77,255,.4), 0 0 0 1px rgba(255,255,255,.15) inset;
  transform: translateY(-2px);
}

.alpha-index {
  user-select: none;
  display: grid;
  grid-auto-flow: column;
  gap: 4px;
  max-width: 980px;
  margin: 6px auto 16px;
  padding: 4px 6px;
  overflow-x: auto;
}

/* 之前的 JSON 上传/下载操作已移除，相关样式不再需要 */

.alpha-index button {
  min-width: 28px;
  padding: 6px 8px;
  border: 1px solid rgba(255,255,255,.12);
  background: rgba(255,255,255,.04);
  color: var(--text);
  border-radius: 8px;
  cursor: pointer;
}

.alpha-index button[disabled] {
  opacity: .35;
  cursor: not-allowed;
}

.results {
  max-width: 980px;
  margin: 10px auto 60px;
  padding: 0 12px;
}

.group-title {
  position: static;
  margin: 24px 0 10px;
  padding: 6px 10px;
  font-weight: 700;
  letter-spacing: 2px;
  color: #cdd7ff;
  background: rgba(15, 20, 35, .72);
  backdrop-filter: blur(6px);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: 10px;
  scroll-margin-top: calc(var(--controls-height) + 12px);
}

.term {
  display: grid;
  gap: 6px;
  margin: 10px 0 14px;
  padding: 14px 16px;
  border-radius: 14px;
  background: var(--glass);
  border: 1px solid rgba(255,255,255,.12);
  box-shadow: 0 10px 30px rgba(0,0,0,.25), 0 0 0 1px rgba(255,255,255,.06) inset;
}

.term .name {
  font-weight: 700;
  font-size: 18px;
}

.term .desc {
  color: var(--muted);
  line-height: 1.6;
}

mark {
  background: linear-gradient(135deg, rgba(124,77,255,.3), rgba(0,229,255,.3));
  border-radius: 4px;
  padding: 0 2px;
}

.empty-state {
  display: grid;
  place-items: center;
  gap: 6px;
  padding: 40px 0 30px;
  color: var(--muted);
}

.empty-emoji { font-size: 32px; }

.site-footer {
  text-align: center;
  color: var(--muted);
  padding: 40px 0 60px;
}

.footer-title {
  margin: 0 0 8px;
  font-size: 16px;
  letter-spacing: 1px;
  color: #cdd7ff;
}

/* 贡献者头像卡片 */
.contributors-grid {
  display: flex;
  justify-content: center;
  gap: 32px;
  flex-wrap: wrap;
  margin: 12px 0 6px;
}

.contrib-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.avatar-link {
  display: block;
  width: 80px;
  height: 80px;
  border-radius: 50%;
  overflow: hidden;
  border: 2px solid rgba(255,255,255,.12);
  box-shadow: 0 12px 40px rgba(0,0,0,.35), 0 0 0 1px rgba(255,255,255,.06) inset;
  transition: transform .18s ease, box-shadow .2s ease;
}

.avatar-link:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 50px rgba(124,77,255,.35), 0 0 0 1px rgba(255,255,255,.08) inset;
}

.avatar {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
  display: block;
}

.contrib-name {
  font-weight: 600;
  color: var(--text);
}

.mission {
  margin-top: 10px;
  color: #9fb3ff;
}

@media (max-width: 720px) {
  .avatar-link { width: 80px; height: 80px; }
}