:root {
  color-scheme: light;
  --bg: #f6f5fb;
  --card: #ffffff;
  --text: #0f0f10;
  --muted: #6b6b75;
  --primary: #8a7bff;
  --primary-soft: #eeecff;
  --border: #e5e7eb;
  --hero-gradient: linear-gradient(180deg, #fbfaff 0%, #f3f1ff 100%);
}

body.dark {
  color-scheme: dark;
  --bg: #0f1016;
  --card: #171822;
  --text: #f5f6fb;
  --muted: #a0a2b4;
  --primary: #9f94ff;
  --primary-soft: #25233b;
  --border: #2a2b3a;
  --hero-gradient: linear-gradient(180deg, #171726 0%, #0f1016 100%);
}

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

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

.page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.hero {
  background: var(--hero-gradient);
  padding: 48px 6vw 64px;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: 16px;
}

.logo-img {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  object-fit: contain;
  background: var(--primary-soft);
  padding: 8px;
}

.logo-img.small {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  padding: 6px;
}

.brand-name {
  font-size: 1.25rem;
  font-weight: 700;
}

.brand-sub {
  font-size: 0.95rem;
  color: var(--muted);
}

.controls {
  display: flex;
  gap: 16px;
  align-items: center;
  flex-wrap: wrap;
}

.lang-switch {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}

.lang-select {
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 0.85rem;
}

.theme-toggle {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  display: grid;
  place-items: center;
  cursor: pointer;
}

.theme-icon {
  font-size: 1.1rem;
}

.hero-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 36px;
  margin-top: 48px;
  align-items: center;
}

.hero-text h1 {
  font-size: clamp(2rem, 3vw, 3rem);
  margin-bottom: 16px;
}

.hero-text p {
  color: var(--muted);
  margin-bottom: 20px;
}

.cta-group {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
}

button.primary {
  border: none;
  background: var(--primary);
  color: #fff;
  padding: 12px 20px;
  border-radius: 12px;
  font-weight: 600;
  cursor: pointer;
}

button.ghost {
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  padding: 12px 20px;
  border-radius: 12px;
  font-weight: 600;
  cursor: pointer;
}

.note {
  font-size: 0.85rem;
  color: var(--muted);
}

.download-status {
  margin-top: 8px;
  font-size: 0.85rem;
  color: var(--muted);
}

.hero-card {
  background: var(--card);
  border-radius: 24px;
  padding: 24px;
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.08);
}

body.dark .hero-card,
body.dark .feature-card,
body.dark .highlight-card {
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.35);
}

.card-title {
  font-weight: 600;
  margin-bottom: 16px;
}

.card-body {
  display: grid;
  gap: 16px;
}

.preview-marquee {
  overflow: hidden;
  border-radius: 20px;
}

.preview-track {
  display: flex;
  gap: 16px;
  animation: preview-marquee 18s linear infinite;
}

.preview-img {
  width: 140px;
  aspect-ratio: 9 / 16;
  border-radius: 18px;
  object-fit: cover;
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--card) 90%, var(--primary-soft));
  flex-shrink: 0;
}

@keyframes preview-marquee {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(-50%);
  }
}

.card-list {
  display: grid;
  gap: 10px;
}

.card-item {
  background: color-mix(in srgb, var(--card) 88%, var(--primary-soft));
  padding: 10px 14px;
  border-radius: 12px;
  font-size: 0.9rem;
}

.section {
  padding: 64px 6vw;
}

.section-title {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 32px;
}

.section-title h2 {
  font-size: 2rem;
  margin-bottom: 12px;
}

.section-title p {
  color: var(--muted);
}

.feature-grid {
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.feature-card {
  background: var(--card);
  padding: 24px;
  border-radius: 18px;
  border: 1px solid var(--border);
}

.feature-card h3 {
  margin-bottom: 10px;
  font-size: 1.1rem;
}

.feature-card p {
  color: var(--muted);
  font-size: 0.95rem;
}

.highlight {
  padding-top: 0;
}

.highlight-card {
  background: var(--card);
  border-radius: 24px;
  padding: 32px;
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  align-items: center;
  border: 1px solid var(--border);
}

.stats {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
}

.stat-value {
  font-size: 1.5rem;
  font-weight: 700;
}

.stat-label {
  color: var(--muted);
  font-size: 0.9rem;
}

.download-card {
  background: linear-gradient(135deg, var(--primary), #a69bff);
  color: #fff;
  padding: 32px;
  border-radius: 24px;
  display: flex;
  flex-direction: column;
  gap: 24px;
  align-items: flex-start;
}

.download-card .cta-group {
  width: 100%;
  justify-content: space-between;
}

.download-card .primary {
  background: #fff;
  color: #2b2b36;
}


.footer {
  padding: 32px 6vw;
  background: color-mix(in srgb, var(--card) 88%, var(--primary-soft));
}

body.dark .footer {
  background: #0b0b12;
}

.footer-content {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
}

.footer-meta {
  color: var(--muted);
  font-size: 0.85rem;
}

.icp {
  margin-top: 6px;
}

@media (max-width: 720px) {
  .hero {
    padding: 32px 5vw 48px;
  }

  .section {
    padding: 48px 5vw;
  }

  .download-card {
    text-align: left;
  }

  .download-card .cta-group {
    flex-direction: column;
    align-items: flex-start;
  }
}
.marquee {
  background: var(--card);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  overflow: hidden;
}

.marquee-track {
  display: flex;
  gap: 32px;
  white-space: nowrap;
  animation: marquee 14s linear infinite;
  padding: 12px 0;
  color: var(--muted);
  font-size: 0.9rem;
}

@keyframes marquee {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(-50%);
  }
}