:root {
  --color-primary: #494fdf;
  --color-primary-bright: #4f55f1;
  --color-primary-deep: #3a40c4;
  --color-on-primary: #ffffff;
  --color-ink: #191c1f;
  --color-body: #1f2226;
  --color-charcoal: #3a3d40;
  --color-mute: #505a63;
  --color-ash: #5c5e60;
  --color-stone: #8d969e;
  --color-faint: #c9c9cd;
  --color-on-dark: #ffffff;
  --color-on-dark-mute: rgba(255, 255, 255, 0.72);
  --color-canvas-light: #ffffff;
  --color-canvas-dark: #000000;
  --color-surface-soft: #f4f4f4;
  --color-surface-card: #ffffff;
  --color-surface-deep: #0a0a0a;
  --color-surface-elevated: #16181a;
  --color-hairline-light: #e2e2e7;
  --color-hairline-dark: rgba(255, 255, 255, 0.12);
  --color-hairline-strong: #191c1f;
  --color-divider-soft: rgba(255, 255, 255, 0.06);
  --color-accent-teal: #00a87e;
  --color-accent-blue-link: #376cd5;
  --color-accent-light-blue: #007bc2;
  --color-accent-light-green: #428619;
  --color-accent-pink: #e61e49;
  --color-accent-warning: #ec7e00;
  --color-accent-brown: #936d62;
  --color-link: #376cd5;
  --rounded-none: 0px;
  --rounded-sm: 8px;
  --rounded-md: 12px;
  --rounded-lg: 20px;
  --rounded-xl: 28px;
  --rounded-full: 9999px;
  --space-xxs: 4px;
  --space-xs: 6px;
  --space-sm: 8px;
  --space-md: 14px;
  --space-lg: 16px;
  --space-xl: 24px;
  --space-xxl: 32px;
  --space-xxxl: 48px;
  --space-block: 80px;
  --space-section: 88px;
  --space-band: 120px;
  --font-display: "Aeonik Pro", Inter, system-ui, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: Inter, system-ui, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }
html { background: var(--color-canvas-dark); }
body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--color-body);
  background: var(--color-canvas-dark);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.5;
  letter-spacing: 0.24px;
}
a { color: var(--color-link); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { max-width: 1200px; margin: 0 auto; padding: 0 var(--space-xl); }

.header {
  background: var(--color-canvas-dark);
  height: 64px;
}
.header-inner {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
  height: 64px;
  flex-wrap: wrap;
}
.logo {
  font-family: var(--font-display);
  font-weight: 500;
  color: var(--color-on-dark);
  font-size: 20px;
  letter-spacing: -0.2px;
}
.logo span {
  display: inline-block;
  width: 10px;
  height: 10px;
  background: var(--color-primary);
  border-radius: 2px;
  margin-right: 8px;
  vertical-align: middle;
}
.logo:hover { text-decoration: none; }
.nav { display: flex; flex-wrap: wrap; gap: 4px 20px; flex: 1; }
.nav a {
  color: var(--color-on-dark);
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.24px;
}
.nav a.on { color: var(--color-on-dark); }
.back { margin-left: auto; font-size: 13px; color: var(--color-on-dark-mute); }

.hero {
  background: var(--color-canvas-dark);
  color: var(--color-on-dark);
  padding: var(--space-section) 0 var(--space-band);
}
.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(48px, 10vw, 136px);
  font-weight: 500;
  line-height: 1;
  letter-spacing: -2.72px;
  color: var(--color-on-dark);
  margin: 0 0 var(--space-xl);
  max-width: 12ch;
}
.hero p {
  margin: 0 0 var(--space-xl);
  color: var(--color-on-dark-mute);
  max-width: 36em;
  font-size: 18px;
  line-height: 1.56;
  letter-spacing: -0.09px;
}
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.pills { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: var(--space-xl); }
.pill {
  background: var(--color-surface-elevated);
  color: var(--color-on-dark);
  font-size: 14px;
  font-weight: 600;
  padding: 8px 16px;
  border-radius: var(--rounded-full);
  height: 36px;
  display: inline-flex;
  align-items: center;
}
.pill.on { background: var(--color-primary); color: var(--color-on-primary); }

.btn, form button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 48px;
  padding: 14px 28px;
  border: none;
  background: var(--color-canvas-light);
  color: var(--color-canvas-dark);
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.24px;
  border-radius: var(--rounded-full);
  cursor: pointer;
  text-decoration: none;
}
.btn:hover, form button:hover { background: var(--color-faint); text-decoration: none; color: var(--color-canvas-dark); }
.btn-dark {
  background: var(--color-canvas-dark);
  color: var(--color-on-dark);
}
.btn-dark:hover { background: var(--color-surface-elevated); color: var(--color-on-dark); }
.btn-soft {
  background: var(--color-surface-soft);
  color: var(--color-ink);
}
.btn-outline {
  background: transparent;
  color: var(--color-on-dark);
  border: 1px solid var(--color-on-dark);
  padding: 13px 27px;
}
.btn-outline:hover { color: var(--color-on-dark); background: var(--color-surface-elevated); }
.btn-outline-light {
  background: var(--color-canvas-light);
  color: var(--color-ink);
  border: 1px solid var(--color-hairline-strong);
}
.btn-outline-light:hover { color: var(--color-ink); }

.band-dark { background: var(--color-canvas-dark); color: var(--color-on-dark); }
.band-light { background: var(--color-canvas-light); color: var(--color-ink); }
.band-soft { background: var(--color-surface-soft); color: var(--color-ink); }

.section { padding: var(--space-section) 0; }
.section h2 {
  font-family: var(--font-display);
  font-size: clamp(32px, 6vw, 80px);
  font-weight: 500;
  line-height: 1;
  letter-spacing: -0.8px;
  margin: 0 0 var(--space-xxl);
}
.band-dark .section h2, .band-dark h2 { color: var(--color-on-dark); }
.band-light h2 { color: var(--color-ink); }
.muted { color: var(--color-mute); }
.band-dark .muted { color: var(--color-on-dark-mute); }

.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-lg); }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-xxl); }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-lg); }

.card {
  background: var(--color-surface-card);
  border: 1px solid var(--color-hairline-light);
  border-radius: var(--rounded-lg);
  padding: var(--space-xxl);
}
.card h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 500;
  line-height: 1.33;
  color: var(--color-ink);
}
.card p { margin: 0; color: var(--color-mute); font-size: 16px; }
.card-dark {
  background: var(--color-surface-elevated);
  border: none;
  color: var(--color-on-dark);
}
.card-dark h3 { color: var(--color-on-dark); }
.card-dark p { color: var(--color-on-dark-mute); }
.card-featured {
  background: var(--color-primary);
  border: none;
  color: var(--color-on-primary);
}
.card-featured h3, .card-featured p { color: var(--color-on-primary); }
.badge {
  display: inline-block;
  background: var(--color-primary);
  color: var(--color-on-primary);
  font-size: 13px;
  border-radius: var(--rounded-full);
  padding: 4px 12px;
  margin-bottom: 12px;
}
.badge-soft {
  background: var(--color-surface-soft);
  color: var(--color-ink);
}

.list { list-style: none; margin: 0; padding: 0; }
.list li {
  border-bottom: 1px solid var(--color-hairline-light);
  padding: 16px 0;
}
.band-dark .list li { border-bottom-color: var(--color-hairline-dark); color: var(--color-on-dark); }
.list .date { color: var(--color-stone); font-size: 13px; margin-right: 12px; }

.ph {
  background: var(--color-surface-soft);
  color: var(--color-stone);
  height: 140px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  margin-bottom: 12px;
  border-radius: var(--rounded-lg);
}
.card-dark .ph, .mockup .ph {
  background: var(--color-surface-deep);
  color: var(--color-stone);
}
.mockup {
  background: var(--color-canvas-dark);
  border-radius: var(--rounded-xl);
  padding: 48px;
}
.mockup .ph { height: 360px; border-radius: var(--rounded-xl); }
.phone {
  width: 220px;
  height: 440px;
  margin: 0 auto;
  background: var(--color-surface-elevated);
  border-radius: var(--rounded-xl);
  border: 1px solid var(--color-hairline-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-stone);
  font-size: 13px;
}
.metal {
  height: 180px;
  border-radius: var(--rounded-lg);
  background: linear-gradient(135deg, var(--color-accent-brown), #2a1c18);
  margin-bottom: 16px;
}

.swatches { display: flex; gap: 8px; margin-top: 16px; }
.swatches i {
  width: 28px;
  height: 28px;
  border-radius: var(--rounded-full);
  display: block;
}
.s-teal { background: var(--color-accent-teal); }
.s-pink { background: var(--color-accent-pink); }
.s-green { background: var(--color-accent-light-green); }
.s-warn { background: var(--color-accent-warning); }
.s-blue { background: var(--color-accent-light-blue); }

form label { display: block; margin: 0 0 4px; font-size: 14px; color: var(--color-charcoal); }
form input, form textarea {
  width: 100%;
  max-width: 480px;
  height: 56px;
  padding: 14px 16px;
  border: 1px solid var(--color-hairline-light);
  background: var(--color-canvas-light);
  color: var(--color-ink);
  font: inherit;
  margin-bottom: 12px;
  border-radius: var(--rounded-md);
}
form textarea { height: auto; min-height: 120px; }

.footer {
  background: var(--color-canvas-dark);
  color: var(--color-on-dark-mute);
  font-size: 14px;
  padding: 80px 24px;
}
.footer .wrap { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 24px; }
.footer h4 { margin: 0 0 16px; color: var(--color-on-dark); font-family: var(--font-display); font-weight: 500; }
.footer a { color: var(--color-on-dark-mute); display: block; margin-bottom: 8px; }
.footer p { margin: 0 0 4px; }
.footer-bottom {
  grid-column: 1 / -1;
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--color-divider-soft);
  font-size: 13px;
}

@media (max-width: 1024px) {
  .grid, .grid-4 { grid-template-columns: 1fr 1fr; }
  .grid-2, .footer .wrap { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
  .grid, .grid-4 { grid-template-columns: 1fr; }
  .hero h1 { font-size: 48px; letter-spacing: -0.8px; }
  .nav { display: none; }
}

.ph { overflow: hidden; }
.ph img { width: 100%; height: 100%; object-fit: cover; display: block; }