:root {
  --color-primary: #181d26;
  --color-primary-active: #0d1218;
  --color-ink: #181d26;
  --color-body: #333840;
  --color-muted: #41454d;
  --color-hairline: #dddddd;
  --color-border-strong: #9297a0;
  --color-canvas: #ffffff;
  --color-surface-soft: #f8fafc;
  --color-surface-strong: #e0e2e6;
  --color-surface-dark: #181d26;
  --color-surface-dark-elevated: #1d1f25;
  --color-signature-coral: #aa2d00;
  --color-signature-forest: #0a2e0e;
  --color-signature-cream: #f5e9d4;
  --color-signature-peach: #fcab79;
  --color-signature-mint: #a8d8c4;
  --color-signature-yellow: #f4d35e;
  --color-signature-mustard: #d9a441;
  --color-on-primary: #ffffff;
  --color-on-dark: #ffffff;
  --color-link: #1b61c9;
  --color-link-active: #1a3866;
  --color-info: #254fad;
  --color-info-border: #458fff;
  --color-success: #006400;
  --color-pricing-ink: #1d1f25;
  --font-display: "Haas Groot Disp", Haas, system-ui, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: Haas, system-ui, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-pricing: "Inter Display", system-ui, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --rounded-xs: 2px;
  --rounded-sm: 6px;
  --rounded-md: 10px;
  --rounded-lg: 12px;
  --rounded-pill: 9999px;
  --rounded-full: 9999px;
  --space-xxs: 4px;
  --space-xs: 8px;
  --space-sm: 12px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-xxl: 48px;
  --space-section: 96px;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--color-body);
  background: var(--color-canvas);
  font-size: 14px;
  font-weight: 400;
  line-height: 1.45;
}
a { color: var(--color-link); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { max-width: 1280px; margin: 0 auto; padding: 0 48px; }

.header {
  background: var(--color-canvas);
  position: sticky;
  top: 0;
  z-index: 20;
}
.header-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  min-height: 64px;
  flex-wrap: wrap;
}
.logo {
  font-family: var(--font-display);
  font-weight: 500;
  color: var(--color-ink);
  font-size: 18px;
}
.logo:hover { text-decoration: none; }
.nav { display: flex; flex-wrap: wrap; gap: 4px 20px; flex: 1; }
.nav a { color: var(--color-ink); font-size: 14px; }
.nav a:hover { text-decoration: none; }
.nav a.on { font-weight: 500; }
.back { margin-left: auto; font-size: 13px; color: var(--color-muted); }
.header-cta {
  display: inline-flex;
  align-items: center;
  padding: 12px 20px;
  background: var(--color-primary);
  color: var(--color-on-primary);
  border-radius: var(--rounded-lg);
  font-size: 16px;
  font-weight: 500;
}
.header-cta:hover { text-decoration: none; color: var(--color-on-primary); }

.hero {
  padding: var(--space-section) 0 64px;
  background: var(--color-canvas);
}
.hero h1 {
  font-family: var(--font-display);
  font-size: 40px;
  font-weight: 400;
  line-height: 1.2;
  color: var(--color-ink);
  margin: 0 0 16px;
  max-width: 16em;
}
.hero p {
  margin: 0 0 32px;
  color: var(--color-muted);
  max-width: 40em;
  font-size: 16px;
  line-height: 1.5;
}
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }

.section { padding: var(--space-section) 0; }
.section h2 {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 400;
  line-height: 1.2;
  color: var(--color-ink);
  margin: 0 0 24px;
}
.muted { color: var(--color-body); font-size: 16px; line-height: 1.5; }

.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }

.card {
  background: var(--color-canvas);
  border-radius: var(--rounded-md);
  padding: 16px;
}
.card h3 {
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 500;
  color: var(--color-ink);
}
.card p { margin: 0; color: var(--color-muted); font-size: 14px; }

.sig {
  border-radius: var(--rounded-lg);
  padding: 48px;
  color: var(--color-on-primary);
}
.sig h2, .sig h3 { color: inherit; margin: 0 0 12px; font-family: var(--font-display); font-weight: 400; font-size: 32px; }
.sig p { margin: 0 0 24px; max-width: 36em; opacity: 0.92; }
.sig-coral { background: var(--color-signature-coral); }
.sig-forest { background: var(--color-signature-forest); }
.sig-dark { background: var(--color-surface-dark); }
.sig-cream { background: var(--color-signature-cream); color: var(--color-ink); }
.sig-cream h2, .sig-cream h3 { color: var(--color-ink); }
.demo-peach { background: var(--color-signature-peach); }
.demo-mint { background: var(--color-signature-mint); }
.demo-yellow { background: var(--color-signature-yellow); }
.demo-mustard { background: var(--color-signature-mustard); }
.cta-band {
  background: var(--color-surface-strong);
  border-radius: var(--rounded-lg);
  padding: 48px;
}

.ph {
  background: var(--color-surface-strong);
  color: var(--color-muted);
  height: 140px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  margin-bottom: 12px;
  border-radius: var(--rounded-md);
}

.list { list-style: none; margin: 0; padding: 0; }
.list li {
  border-bottom: 1px solid var(--color-hairline);
  padding: 16px 0;
  display: flex;
  gap: 16px;
}
.list .date { color: var(--color-muted); min-width: 7em; }

form label { display: block; margin: 0 0 4px; font-size: 14px; font-weight: 500; color: var(--color-ink); }
form input, form textarea {
  width: 100%; max-width: 480px; padding: 12px 16px; height: 44px;
  border: 1px solid var(--color-hairline); border-radius: var(--rounded-sm);
  font: inherit; margin-bottom: 12px; background: var(--color-canvas); color: var(--color-ink);
}
form textarea { height: auto; }
form input:focus, form textarea:focus {
  outline: none; border-color: var(--color-info-border);
}
form button, .btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 16px 24px; border: 0;
  background: var(--color-primary); color: var(--color-on-primary);
  font: inherit; font-size: 16px; font-weight: 500;
  cursor: pointer; border-radius: var(--rounded-lg);
}
.btn:hover { text-decoration: none; color: var(--color-on-primary); }
.btn:active { background: var(--color-primary-active); }
.btn-secondary {
  background: var(--color-canvas);
  color: var(--color-ink);
  border: 1px solid var(--color-hairline);
}
.btn-secondary:hover { color: var(--color-ink); }
.btn-on-dark {
  background: var(--color-canvas);
  color: var(--color-ink);
}
.btn-on-dark:hover { color: var(--color-ink); }
.btn-pill {
  border-radius: var(--rounded-pill);
  padding: 12px 24px;
  background: var(--color-canvas);
  color: var(--color-pricing-ink);
  border: 1px solid var(--color-hairline);
}

.footer {
  padding: 64px 0 48px;
  color: var(--color-muted);
  font-size: 14px;
  border-top: 1px solid var(--color-hairline);
}
.footer p { margin: 0 0 4px; }

@media (max-width: 720px) {
  .wrap { padding: 0 16px; }
  .grid, .grid-2, .grid-4 { grid-template-columns: 1fr; }
  .hero h1 { font-size: 32px; }
  .section { padding: 64px 0; }
}

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