:root {
  --bg: #fafaf7;
  --surface: #ffffff;
  --ink: #1c1c1e;
  --muted: #6b6b70;
  --accent: #ff6b6b;
  --accent-ink: #ffffff;
  --border: #ececec;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.04), 0 8px 24px rgba(0, 0, 0, 0.06);
  --radius: 14px;
  --wrap: 1200px;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 20px;
}

.site-header {
  padding: 48px 0 24px;
  text-align: center;
}

.site-header h1 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 2.75rem);
  letter-spacing: -0.02em;
}

.tagline {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 1.05rem;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
  padding: 24px 0 48px;
}

.status {
  grid-column: 1 / -1;
  text-align: center;
  color: var(--muted);
  padding: 48px 16px;
  font-size: 0.95rem;
}

.status.error {
  color: #b00020;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
  text-align: left;
  padding: 0;
  font: inherit;
  color: inherit;
  width: 100%;
  display: flex;
  flex-direction: column;
}

.card:hover,
.card:focus-visible {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
  border-color: #dcdcdc;
  outline: none;
}

.card-thumb {
  aspect-ratio: 4 / 3;
  background: #f0f0ec;
  overflow: hidden;
  position: relative;
}

.card-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.card-thumb.placeholder::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, #f0f0ec, #e3e3dc);
}

.card-body {
  padding: 14px 16px 18px;
}

.card-title {
  margin: 0 0 4px;
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.card-desc {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.viewer {
  position: fixed;
  inset: 0;
  background: rgba(20, 20, 22, 0.88);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 20px;
}

.viewer[hidden] {
  display: none;
}

.viewer-inner {
  background: #111;
  color: #fff;
  border-radius: var(--radius);
  width: min(1100px, 100%);
  height: min(85vh, 900px);
  display: grid;
  grid-template-rows: 1fr auto;
  position: relative;
  overflow: hidden;
}

.viewer-close {
  position: absolute;
  top: 10px;
  right: 12px;
  z-index: 2;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: none;
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
  font-size: 1.6rem;
  line-height: 1;
  cursor: pointer;
  transition: background 0.15s ease;
}

.viewer-close:hover {
  background: rgba(255, 255, 255, 0.3);
}

.viewer-stage {
  background: #1a1a1d;
  overflow: hidden;
}

model-viewer {
  width: 100%;
  height: 100%;
  --poster-color: transparent;
}

.viewer-meta {
  padding: 16px 20px 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  background: #121214;
}

.viewer-meta h2 {
  margin: 0 0 4px;
  font-size: 1.15rem;
  letter-spacing: -0.01em;
}

.viewer-meta p {
  margin: 0;
  color: #b3b3b8;
  font-size: 0.92rem;
  line-height: 1.45;
}

.site-footer {
  padding: 32px 0 40px;
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
}

@media (max-width: 480px) {
  .grid {
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 14px;
  }
  .card-body { padding: 12px 12px 14px; }
  .card-title { font-size: 0.98rem; }
  .card-desc { font-size: 0.82rem; }
  .viewer { padding: 0; }
  .viewer-inner { border-radius: 0; height: 100vh; }
}