:root {
  --bg: #070a14;
  --bg-soft: #0f1630;
  --panel: rgba(16, 27, 58, 0.7);
  --panel-border: rgba(129, 170, 255, 0.22);
  --text: #edf3ff;
  --text-soft: #a9b9dd;
  --accent: #3ff6ff;
  --accent-2: #a171ff;
  --danger: #ff6a8d;
  --ok: #62f7a2;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 18px 42px rgba(0, 0, 0, 0.35);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: Inter, "SF Pro Text", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  color: var(--text);
  background: radial-gradient(circle at 15% 15%, #1a2452 0%, rgba(26, 36, 82, 0) 40%),
    radial-gradient(circle at 85% 10%, #2f165d 0%, rgba(47, 22, 93, 0) 38%),
    linear-gradient(120deg, #060814 0%, #081024 45%, #05070e 100%);
  background-size: 160% 160%;
  animation: bg-shift 14s ease-in-out infinite alternate;
  line-height: 1.5;
}

@keyframes bg-shift {
  from {
    background-position: 0% 0%;
  }
  to {
    background-position: 100% 100%;
  }
}

#particle-layer,
.bg-grid {
  position: fixed;
  inset: 0;
  pointer-events: none;
}

#particle-layer {
  z-index: 0;
}

.bg-grid {
  z-index: 1;
  background-image: linear-gradient(rgba(88, 130, 255, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(88, 130, 255, 0.08) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: radial-gradient(circle at center, black 18%, transparent 82%);
  opacity: 0.44;
}

.app-shell {
  position: relative;
  z-index: 2;
  width: min(1240px, calc(100vw - 3rem));
  margin: 0 auto;
  padding: 5.25rem 0 3rem;
}

.new-content-bar {
  position: fixed;
  top: 1rem;
  left: 50%;
  z-index: 20;
  transform: translateX(-50%);
  border: 1px solid rgba(85, 243, 255, 0.65);
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(16, 63, 117, 0.9), rgba(35, 22, 83, 0.95));
  color: #dffcff;
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  padding: 0.6rem 1.1rem;
  box-shadow: 0 8px 24px rgba(43, 203, 255, 0.25);
  cursor: pointer;
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
  animation: bar-in 280ms ease;
}

.new-content-bar:hover {
  transform: translateX(-50%) translateY(-1px);
  box-shadow: 0 12px 26px rgba(43, 203, 255, 0.3);
  border-color: rgba(149, 245, 255, 0.95);
}

@keyframes bar-in {
  from {
    opacity: 0;
    transform: translateX(-50%) translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }
}

.panel {
  border-radius: var(--radius);
  background: var(--panel);
  border: 1px solid var(--panel-border);
  backdrop-filter: blur(8px);
  box-shadow: var(--shadow);
}

.hero {
  position: relative;
  overflow: hidden;
  padding: 2.2rem 2.4rem;
  margin-bottom: 1.25rem;
}

.hero::before,
.hero::after {
  content: "";
  position: absolute;
  border-radius: 999px;
  filter: blur(2px);
  pointer-events: none;
}

.hero::before {
  width: 220px;
  height: 220px;
  right: -56px;
  top: -64px;
  background: radial-gradient(circle, rgba(75, 249, 255, 0.32), rgba(75, 249, 255, 0));
}

.hero::after {
  width: 260px;
  height: 260px;
  left: -90px;
  bottom: -120px;
  background: radial-gradient(circle, rgba(165, 120, 255, 0.22), rgba(165, 120, 255, 0));
}

.eyebrow {
  margin: 0 0 0.6rem;
  color: #87eaff;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.78rem;
}

.hero h1 {
  margin: 0;
  font-size: clamp(1.6rem, 4vw, 2.6rem);
  line-height: 1.12;
}

.hero-copy {
  color: var(--text-soft);
  margin: 0.95rem 0 0;
  max-width: 64ch;
}

.hero-meta {
  margin-top: 1.2rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.meta-chip {
  min-width: 140px;
  border-radius: 12px;
  border: 1px solid rgba(129, 170, 255, 0.28);
  background: rgba(11, 18, 39, 0.64);
  padding: 0.65rem 0.75rem;
}

.meta-chip span {
  display: block;
  font-size: 0.78rem;
  color: var(--text-soft);
}

.meta-chip strong {
  display: block;
  margin-top: 0.2rem;
  font-size: 1.05rem;
  color: #d8f7ff;
}

.main-grid {
  display: grid;
  gap: 1.15rem;
  grid-template-columns: minmax(300px, 0.95fr) minmax(300px, 1.25fr);
  align-items: start;
}

.leaderboard-panel,
.feed-panel {
  padding: 1.25rem;
}

.section-header {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  align-items: flex-start;
}

.section-header h2 {
  margin: 0;
  font-size: 1.22rem;
}

.section-header p {
  margin: 0.25rem 0 0;
  color: var(--text-soft);
  font-size: 0.9rem;
}

.feed-actions {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.ghost-btn {
  border: 1px solid rgba(129, 170, 255, 0.4);
  background: rgba(11, 18, 39, 0.68);
  color: #d7e9ff;
  border-radius: 999px;
  padding: 0.4rem 0.9rem;
  font-size: 0.82rem;
  cursor: pointer;
  transition: transform 150ms ease, border-color 150ms ease, box-shadow 150ms ease;
}

.ghost-btn:hover {
  border-color: rgba(80, 239, 255, 0.8);
  box-shadow: 0 0 0 1px rgba(80, 239, 255, 0.28) inset;
  transform: translateY(-1px);
}

.update-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.35rem 0.65rem;
  border-radius: 999px;
  border: 1px solid rgba(129, 170, 255, 0.33);
  background: rgba(11, 18, 39, 0.6);
  color: #a8c6f5;
  font-size: 0.78rem;
}

.update-badge::before {
  content: "";
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 50%;
  background: var(--ok);
  box-shadow: 0 0 10px rgba(98, 247, 162, 0.8);
}

.update-badge.is-error::before {
  background: var(--danger);
  box-shadow: 0 0 10px rgba(255, 106, 141, 0.72);
}

.update-badge.is-error {
  color: #ffbed1;
}

.leaderboard-toolbar {
  margin: 1rem 0 0.7rem;
}

.search-label {
  display: grid;
  gap: 0.4rem;
  max-width: 360px;
}

.search-label span {
  font-size: 0.78rem;
  color: var(--text-soft);
}

.search-label input {
  width: 100%;
  border-radius: 10px;
  border: 1px solid rgba(129, 170, 255, 0.35);
  background: rgba(9, 15, 31, 0.8);
  color: var(--text);
  padding: 0.58rem 0.7rem;
  outline: none;
  transition: border-color 180ms ease, box-shadow 180ms ease;
}

.search-label input:focus {
  border-color: rgba(72, 240, 255, 0.85);
  box-shadow: 0 0 0 3px rgba(72, 240, 255, 0.16);
}

.state {
  margin: 0.35rem 0 0.7rem;
  font-size: 0.9rem;
  min-height: 1.4rem;
  color: #bfcae3;
}

.state[hidden] {
  display: none;
}

.state.error {
  color: #ffadc0;
}

.state.empty {
  color: #a5b4d7;
}

.state .inline-action {
  margin-left: 0.5rem;
  border: 0;
  border-radius: 999px;
  padding: 0.28rem 0.72rem;
  cursor: pointer;
  background: rgba(64, 190, 255, 0.18);
  color: #b2ecff;
}

.table-wrap {
  overflow-x: auto;
}

#leaderboard-table {
  width: 100%;
  border-collapse: collapse;
  table-layout: fixed;
}

#leaderboard-table th,
#leaderboard-table td {
  padding: 0.65rem 0.45rem;
  border-bottom: 1px solid rgba(129, 170, 255, 0.14);
  text-align: left;
  font-size: 0.88rem;
}

#leaderboard-table th:first-child,
#leaderboard-table td:first-child {
  width: 52px;
  text-align: center;
}

#leaderboard-table th:last-child,
#leaderboard-table td:last-child {
  width: 118px;
}

.sort-btn {
  border: 0;
  background: transparent;
  color: #9eb7e1;
  font: inherit;
  font-weight: 600;
  padding: 0;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}

.sort-btn::after {
  content: "↕";
  font-size: 0.72rem;
  opacity: 0.6;
}

.sort-btn.active {
  color: #e2f7ff;
}

.sort-btn.active.asc::after {
  content: "↑";
  opacity: 1;
}

.sort-btn.active.desc::after {
  content: "↓";
  opacity: 1;
}

#leaderboard-body tr {
  transition: background-color 160ms ease;
}

#leaderboard-body tr:hover {
  background: rgba(63, 246, 255, 0.08);
}

.rank-pill {
  display: inline-grid;
  place-items: center;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  font-weight: 700;
  font-size: 0.78rem;
  color: #eaf8ff;
  background: rgba(96, 124, 203, 0.35);
}

.rank-pill.top {
  background: linear-gradient(145deg, rgba(62, 247, 255, 0.8), rgba(133, 120, 255, 0.72));
  color: #0b1125;
}

.model-name {
  color: #ecf7ff;
  font-weight: 600;
}

.model-provider,
.time-muted {
  color: #97acd2;
}

.score {
  font-variant-numeric: tabular-nums;
  color: #c8dcff;
}

.feed-list {
  display: grid;
  gap: 0.85rem;
}

.feed-card {
  --tilt-x: 0deg;
  --tilt-y: 0deg;
  position: relative;
  overflow: hidden;
  border-radius: 14px;
  border: 1px solid rgba(129, 170, 255, 0.26);
  background: rgba(10, 16, 34, 0.86);
  transform: perspective(1000px) rotateX(var(--tilt-x)) rotateY(var(--tilt-y)) translateZ(0);
  transform-origin: center;
  transition: transform 190ms ease, border-color 190ms ease, box-shadow 190ms ease;
  will-change: transform;
}

.feed-card::before {
  content: "";
  position: absolute;
  inset: -100% -70%;
  background: radial-gradient(circle, rgba(70, 241, 255, 0.2) 0%, rgba(70, 241, 255, 0) 56%);
  opacity: 0;
  transition: opacity 180ms ease;
  pointer-events: none;
}

.feed-card:hover {
  border-color: rgba(80, 239, 255, 0.62);
  box-shadow: 0 10px 30px rgba(11, 38, 73, 0.45);
}

.feed-card:hover::before {
  opacity: 1;
}

.feed-card-inner {
  display: grid;
  grid-template-columns: 188px 1fr;
  gap: 0.9rem;
  padding: 0.78rem;
}

.feed-image-wrap {
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid rgba(129, 170, 255, 0.2);
  background: #08102a;
  aspect-ratio: 16 / 10;
}

.feed-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.feed-content {
  min-width: 0;
}

.feed-meta {
  display: flex;
  gap: 0.6rem;
  align-items: center;
  font-size: 0.78rem;
  color: #9cb0d8;
  margin-bottom: 0.45rem;
}

.feed-source {
  color: #79ecff;
}

.feed-title {
  margin: 0;
  font-size: 1.04rem;
  line-height: 1.35;
}

.feed-title a {
  color: #ecf7ff;
  text-decoration: none;
}

.feed-title a:hover {
  color: #85f1ff;
}

.feed-summary {
  margin: 0.58rem 0 0.65rem;
  color: #afbee0;
  font-size: 0.9rem;
}

.feed-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  text-decoration: none;
  color: #9ee9ff;
  font-size: 0.84rem;
  font-weight: 600;
}

.feed-link:hover {
  color: #d3f6ff;
}

.feed-link[href="#"] {
  color: #91a3c7;
  pointer-events: none;
}

.feed-card--new {
  animation: card-in 540ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

@keyframes card-in {
  from {
    opacity: 0;
    transform: perspective(1000px) rotateX(4deg) rotateY(-3deg) translateY(-16px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: perspective(1000px) rotateX(var(--tilt-x)) rotateY(var(--tilt-y)) translateY(0) scale(1);
  }
}

.skeleton {
  overflow: hidden;
  background: rgba(122, 150, 205, 0.16);
  border-radius: 8px;
  position: relative;
}

.skeleton::after {
  content: "";
  position: absolute;
  inset: 0;
  transform: translateX(-100%);
  background: linear-gradient(90deg, transparent, rgba(232, 242, 255, 0.15), transparent);
  animation: shimmer 1.4s infinite;
}

@keyframes shimmer {
  to {
    transform: translateX(100%);
  }
}

.skeleton-row {
  height: 14px;
  margin: 0.42rem 0;
}

.skeleton-card {
  border-radius: 14px;
  border: 1px solid rgba(129, 170, 255, 0.2);
  background: rgba(10, 16, 34, 0.84);
  padding: 0.8rem;
}

.skeleton-grid {
  display: grid;
  grid-template-columns: 188px 1fr;
  gap: 0.9rem;
}

.skeleton-image {
  width: 100%;
  aspect-ratio: 16 / 10;
  border-radius: 10px;
}

.noscript-msg {
  position: fixed;
  bottom: 1rem;
  left: 50%;
  transform: translateX(-50%);
  background: #1f263f;
  color: #edf3ff;
  border-radius: 8px;
  padding: 0.6rem 0.8rem;
  font-size: 0.9rem;
  z-index: 30;
}

@media (max-width: 1060px) {
  .main-grid {
    grid-template-columns: 1fr;
  }

  .feed-card-inner,
  .skeleton-grid {
    grid-template-columns: 160px 1fr;
  }
}

@media (max-width: 760px) {
  .app-shell {
    width: min(1240px, calc(100vw - 1.4rem));
    padding-top: 4.8rem;
  }

  .hero {
    padding: 1.45rem 1.1rem;
  }

  .leaderboard-panel,
  .feed-panel {
    padding: 1rem;
  }

  .section-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .feed-actions {
    width: 100%;
  }

  .feed-card-inner,
  .skeleton-grid {
    grid-template-columns: 1fr;
  }

  .feed-image-wrap,
  .skeleton-image {
    aspect-ratio: 16 / 9;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}