:root {
  --color-primary: #0064e0;
  --color-primary-deep: #0457cb;
  --color-primary-soft: #0091ff;
  --color-on-primary: #ffffff;
  --color-ink-button: #000000;
  --color-on-ink-button: #ffffff;
  --color-fb-blue: #1876f2;
  --color-meta-link: #385898;
  --color-oculus-purple: #a121ce;
  --color-success: #31a24c;
  --color-success-bg: #24e400;
  --color-attention: #f2a918;
  --color-warning: #f7b928;
  --color-warning-bg: #ffe200;
  --color-critical: #e41e3f;
  --color-critical-strong: #f0284a;
  --color-canvas: #ffffff;
  --color-surface-soft: #f1f4f7;
  --color-ink-deep: #0a1317;
  --color-ink: #1c1e21;
  --color-charcoal: #444950;
  --color-slate: #4b4c4f;
  --color-steel: #5d6c7b;
  --color-stone: #8595a4;
  --color-hairline: #ced0d4;
  --color-hairline-soft: #dee3e9;
  --color-disabled-text: #bcc0c4;
  --rounded-xs: 2px;
  --rounded-sm: 4px;
  --rounded-md: 6px;
  --rounded-lg: 8px;
  --rounded-xl: 16px;
  --rounded-xxl: 24px;
  --rounded-xxxl: 32px;
  --rounded-feature: 40px;
  --rounded-full: 100px;
  --rounded-circle: 9999px;
  --space-xxs: 4px;
  --space-xs: 8px;
  --space-sm: 10px;
  --space-md: 12px;
  --space-base: 16px;
  --space-lg: 20px;
  --space-xl: 24px;
  --space-xxl: 32px;
  --space-xxxl: 40px;
  --space-section-sm: 48px;
  --space-section: 64px;
  --space-section-lg: 80px;
  --space-hero: 120px;
  --font: "Optimistic VF", system-ui, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--color-ink);
  background: var(--color-canvas);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.5;
  letter-spacing: -0.16px;
}
a { color: var(--color-meta-link); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { max-width: 1280px; margin: 0 auto; padding: 0 var(--space-xxl); }

.promo {
  background: var(--color-ink-deep);
  color: var(--color-canvas);
  text-align: center;
  padding: var(--space-md) var(--space-xl);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: -0.14px;
}
.promo a { color: var(--color-canvas); text-decoration: underline; }

.header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--color-canvas);
  border-bottom: 1px solid var(--color-hairline-soft);
}
.header-inner {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
  min-height: 64px;
  flex-wrap: wrap;
}
.logo {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-ink-deep);
  letter-spacing: 0;
  font-feature-settings: "ss01", "ss02";
}
.logo:hover { text-decoration: none; }
.nav { display: flex; flex-wrap: wrap; gap: 8px; flex: 1; }
.nav a {
  color: var(--color-ink);
  font-size: 14px;
  font-weight: 700;
  padding: 8px 16px;
  border: 1px solid var(--color-hairline);
  border-radius: var(--rounded-full);
  letter-spacing: -0.14px;
}
.nav a:hover { text-decoration: none; }
.nav a.on {
  background: var(--color-ink-deep);
  color: var(--color-canvas);
  border-color: var(--color-ink-deep);
}
.back { margin-left: auto; font-size: 13px; color: var(--color-steel); }

.hero {
  padding: var(--space-hero) 0 var(--space-section-lg);
}
.hero .eyebrow {
  font-size: 12px;
  font-weight: 700;
  color: var(--color-steel);
  margin: 0 0 var(--space-base);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.hero h1 {
  font-size: 64px;
  font-weight: 500;
  line-height: 1.16;
  letter-spacing: 0;
  margin: 0 0 var(--space-xl);
  color: var(--color-ink-deep);
  font-feature-settings: "ss01", "ss02";
  max-width: 16ch;
}
.hero p {
  margin: 0 0 var(--space-xxl);
  color: var(--color-charcoal);
  font-size: 18px;
  font-weight: 400;
  line-height: 1.44;
  max-width: 38em;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: var(--space-md); }

.btn,
form button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--color-ink-button);
  color: var(--color-on-ink-button);
  font-family: var(--font);
  font-size: 14px;
  font-weight: 700;
  line-height: 1.43;
  letter-spacing: -0.14px;
  padding: 14px 30px;
  border: 0;
  border-radius: var(--rounded-full);
  cursor: pointer;
}
.btn:hover, form button:hover { text-decoration: none; background: var(--color-charcoal); color: var(--color-on-ink-button); }
.btn-secondary {
  background: transparent;
  color: var(--color-ink-deep);
  border: 2px solid var(--color-ink-deep);
  padding: 12px 28px;
}
.btn-secondary:hover { background: var(--color-surface-soft); color: var(--color-ink-deep); }
.btn-buy {
  background: var(--color-primary);
  color: var(--color-on-primary);
}
.btn-buy:hover { background: var(--color-primary-deep); color: var(--color-on-primary); }
.btn-ghost {
  background: transparent;
  color: var(--color-ink-deep);
  border: 2px solid rgba(10, 19, 23, 0.12);
  padding: 10px 22px;
}

.section { padding: var(--space-section-lg) 0; }
.section h2 {
  font-size: 36px;
  font-weight: 500;
  line-height: 1.28;
  margin: 0 0 var(--space-xxl);
  color: var(--color-ink-deep);
  font-feature-settings: "ss01", "ss02";
}
.section h2.light {
  font-weight: 300;
  font-size: 28px;
  line-height: 1.21;
}
.muted { color: var(--color-charcoal); max-width: 46em; }

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

.card {
  background: var(--color-canvas);
  border: 1px solid var(--color-hairline-soft);
  border-radius: var(--rounded-xxxl);
  padding: var(--space-xxl);
}
.card h3 {
  margin: 0 0 var(--space-xs);
  font-size: 24px;
  font-weight: 500;
  line-height: 1.25;
  color: var(--color-ink-deep);
  font-feature-settings: "ss01", "ss02";
}
.card p { margin: 0; color: var(--color-charcoal); font-size: 14px; line-height: 1.43; }
.card.stat h3 { font-size: 36px; font-weight: 500; }
.card.stat p { font-size: 14px; font-weight: 700; color: var(--color-steel); }
.card-icon {
  border-radius: var(--rounded-xl);
  padding: var(--space-xl);
}
.card-photo {
  padding: 0;
  border: 0;
  overflow: hidden;
}
.card-photo .ph { height: 220px; margin: 0; border-radius: 0; }
.card-photo .body { padding: var(--space-xxl); }
.card-dark {
  background: var(--color-ink-deep);
  color: var(--color-canvas);
  border: 0;
  padding: var(--space-section);
}
.card-dark h2, .card-dark h3 { color: var(--color-canvas); }
.card-dark p { color: rgba(255,255,255,0.78); }

.ph {
  background: var(--color-surface-soft);
  color: var(--color-stone);
  height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  margin-bottom: var(--space-base);
  border-radius: var(--rounded-xxxl);
}

.badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  line-height: 1.33;
  padding: 4px 10px;
  border-radius: var(--rounded-full);
}
.badge-sale { background: var(--color-warning); color: var(--color-ink-deep); }
.badge-ok { background: var(--color-success); color: var(--color-canvas); }

.list { list-style: none; margin: 0; padding: 0; }
.list li {
  border-bottom: 1px solid var(--color-hairline-soft);
  padding: var(--space-xl) 0;
  font-size: 16px;
  font-weight: 700;
}
.list li:last-child { border-bottom: 0; }
.list .date {
  display: inline-block;
  min-width: 7.5em;
  color: var(--color-steel);
  font-size: 14px;
  font-weight: 400;
  margin-right: var(--space-md);
}

form label { display: block; margin: 0 0 4px; font-size: 14px; font-weight: 700; }
form input, form textarea {
  width: 100%;
  max-width: 480px;
  height: 44px;
  padding: var(--space-md);
  border: 1px solid var(--color-hairline);
  background: var(--color-canvas);
  color: var(--color-ink);
  font: inherit;
  margin-bottom: var(--space-base);
  border-radius: var(--rounded-lg);
}
form textarea { height: auto; min-height: 120px; }
form input:focus, form textarea:focus {
  outline: none;
  border: 2px solid var(--color-fb-blue);
}

.footer {
  padding: var(--space-section) 0 var(--space-xxl);
  border-top: 1px solid var(--color-hairline-soft);
  color: var(--color-steel);
  font-size: 14px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(4, 1fr);
  gap: var(--space-xxl);
  margin-bottom: var(--space-xxl);
}
.footer h4 {
  margin: 0 0 var(--space-md);
  font-size: 14px;
  font-weight: 700;
  color: var(--color-ink);
}
.footer a { color: var(--color-steel); display: block; padding: 4px 0; }
.footer .fine { font-size: 12px; color: var(--color-stone); }

@media (max-width: 1024px) {
  .hero h1 { font-size: 36px; }
  .grid, .grid-4, .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 720px) {
  .wrap { padding: 0 var(--space-base); }
  .hero { padding: var(--space-section) 0; }
  .hero h1 { font-size: 24px; }
  .grid, .grid-2, .grid-4, .footer-grid { grid-template-columns: 1fr; }
  .nav a { border: 0; padding: 6px 8px; }
  .nav a.on { background: transparent; color: var(--color-ink-deep); }
}

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