:root {
  --bg: #0f0f14;
  --bg-card: #1a1a24;
  --fg: #e8e8ed;
  --fg-muted: #8888a0;
  --accent: #6c5ce7;
  --accent-hover: #7e6ff0;
  --border: #2a2a3a;
  --radius: 12px;
  --radius-sm: 8px;
  --max-w: 1100px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.6;
}

/* Nav */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(15, 15, 20, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.nav-brand {
  font-size: 20px;
  font-weight: 700;
  color: var(--fg);
  text-decoration: none;
}
.nav-links { display: flex; gap: 24px; }
.nav-links a {
  color: var(--fg-muted);
  text-decoration: none;
  font-size: 14px;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--fg); }

/* Hero */
.hero {
  padding: 120px 24px 80px;
  text-align: center;
}
.hero-inner { max-width: 640px; margin: 0 auto; }
.hero h1 {
  font-size: 56px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent), #a29bfe);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-tagline {
  font-size: 24px;
  color: var(--fg);
  margin-top: 12px;
}
.hero-desc {
  color: var(--fg-muted);
  margin-top: 16px;
  font-size: 16px;
}
.hero-actions {
  margin-top: 32px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}
.download-picker {
  margin-top: 8px;
}
.download-picker select {
  padding: 8px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  color: var(--fg);
  font-size: 14px;
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, var(--fg-muted) 50%),
                    linear-gradient(135deg, var(--fg-muted) 50%, transparent 50%);
  background-position: calc(100% - 16px) 12px, calc(100% - 11px) 12px;
  background-size: 5px 5px;
  background-repeat: no-repeat;
  padding-right: 32px;
}
.download-picker select:hover { border-color: var(--fg-muted); }
.platform-hint {
  color: var(--fg-muted);
  font-size: 13px;
  margin-top: 4px;
}
.platform-hint a {
  color: var(--accent);
  text-decoration: none;
}
.platform-hint a:hover { text-decoration: underline; }

/* Buttons */
.btn {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.2s, transform 0.1s;
  border: none;
}
.btn:active { transform: scale(0.97); }
.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover { background: var(--accent-hover); }
.btn-ghost {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--fg);
}
.btn-ghost:hover { border-color: var(--fg-muted); }
.btn-lg { padding: 16px 36px; font-size: 16px; }
.btn-sub {
  font-size: 12px;
  opacity: 0.7;
  margin-top: 2px;
}

/* Features */
.features { padding: 80px 24px; }
.section-inner {
  max-width: var(--max-w);
  margin: 0 auto;
}
.features h2, .download h2, .store-hero h1 {
  text-align: center;
  font-size: 32px;
  margin-bottom: 48px;
}
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}
.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  text-align: center;
}
.feature-icon { font-size: 36px; margin-bottom: 12px; }
.feature-card h3 {
  font-size: 18px;
  margin-bottom: 8px;
}
.feature-card p {
  color: var(--fg-muted);
  font-size: 14px;
}

/* Download */
.download {
  padding: 80px 24px;
  text-align: center;
}
.download-hint {
  color: var(--fg-muted);
  margin: -32px 0 32px;
  font-size: 14px;
}
.download-buttons { margin-bottom: 16px; }
.version-info {
  color: var(--fg-muted);
  font-size: 13px;
}

/* Store */
.store-hero {
  padding: 60px 24px 40px;
  text-align: center;
}
.store-hero p {
  color: var(--fg-muted);
  margin-top: -32px;
}
.store-content { padding: 0 24px 80px; }
.store-filters {
  display: flex;
  gap: 12px;
  margin-bottom: 32px;
  flex-wrap: wrap;
  align-items: center;
}
.store-filters input[type="search"],
.store-filters select {
  padding: 8px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  color: var(--fg);
  font-size: 14px;
}
.store-filters input[type="search"] { flex: 1; min-width: 200px; }
.filter-checkbox {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  color: var(--fg-muted);
  cursor: pointer;
}

.skin-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 20px;
}
.store-skin-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color 0.2s, transform 0.15s;
}
.store-skin-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}
.skin-preview {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  background: #12121a;
}
.skin-preview-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--fg-muted);
  font-size: 14px;
}
.skin-info { padding: 14px; }
.skin-info h3 { font-size: 15px; margin-bottom: 4px; }
.skin-renderer {
  display: inline-block;
  font-size: 11px;
  padding: 2px 6px;
  border-radius: 4px;
  background: var(--border);
  color: var(--fg-muted);
}
.skin-meta {
  margin-top: 8px;
  display: flex;
  justify-content: space-between;
  font-size: 13px;
}
.skin-price { color: var(--accent); font-weight: 600; }
.skin-downloads { color: var(--fg-muted); }

.empty { color: var(--fg-muted); text-align: center; grid-column: 1/-1; padding: 40px; }

/* Footer */
.footer {
  border-top: 1px solid var(--border);
  padding: 24px;
  text-align: center;
}
.footer p { color: var(--fg-muted); font-size: 13px; }

/* Responsive */
@media (max-width: 640px) {
  .hero h1 { font-size: 36px; }
  .hero-tagline { font-size: 18px; }
  .feature-grid { grid-template-columns: 1fr; }
}