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

:root {
  --color-primary: #181d26;
  --color-primary-active: #0d1218;
  --color-canvas: #ffffff;
  --color-surface-soft: #f8fafc;
  --color-surface-strong: #e0e2e6;
  --color-surface-dark: #181d26;
  --color-ink: #181d26;
  --color-body: #333840;
  --color-muted: #41454d;
  --color-hairline: #dddddd;
  --color-link: #1b61c9;
  --color-on-primary: #ffffff;
  --color-signature-coral: #aa2d00;
  --color-signature-forest: #0a2e0e;
  --color-signature-cream: #f5e9d4;
  --color-signature-peach: #fcab79;
  --color-signature-mint: #a8d8c4;
  --rounded-xs: 2px;
  --rounded-sm: 6px;
  --rounded-md: 10px;
  --rounded-lg: 12px;
  --spacing-xs: 8px;
  --spacing-sm: 12px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-xxl: 48px;
  --spacing-section: 96px;
  --font-stack: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

html { font-size: 16px; scroll-behavior: smooth; }
body { font-family: var(--font-stack); font-size: 14px; font-weight: 400; line-height: 1.25; color: var(--color-body); background: var(--color-canvas); }

a { color: var(--color-link); text-decoration: none; }
a:hover { text-decoration: underline; }

img { display: block; max-width: 100%; height: auto; }

.container { max-width: 1280px; margin: 0 auto; padding: 0 var(--spacing-xxl); }

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&display=swap');

.site-header { position: sticky; top: 0; z-index: 100; background: var(--color-canvas); border-bottom: 1px solid var(--color-hairline); height: 64px; }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.logo { font-size: 20px; font-weight: 600; color: var(--color-ink); letter-spacing: -0.02em; }
.logo span { color: var(--color-signature-coral); }
.main-nav { display: flex; gap: var(--spacing-lg); align-items: center; }
.main-nav a { font-size: 14px; font-weight: 400; color: var(--color-body); }
.main-nav a:hover { color: var(--color-ink); text-decoration: none; }
.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 4px; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--color-ink); border-radius: 2px; transition: transform 0.2s; }

.hero-band { padding: var(--spacing-section) 0; background: var(--color-canvas); }
.hero-band h1 { font-size: 40px; font-weight: 400; line-height: 1.2; color: var(--color-ink); max-width: 700px; margin-bottom: var(--spacing-lg); }
.hero-band p.hero-sub { font-size: 18px; font-weight: 400; color: var(--color-body); max-width: 580px; margin-bottom: var(--spacing-xl); line-height: 1.5; }
.btn-primary { display: inline-flex; align-items: center; background: var(--color-primary); color: var(--color-on-primary); font-size: 16px; font-weight: 500; padding: 16px 24px; border-radius: var(--rounded-lg); border: none; cursor: pointer; transition: background 0.15s; text-decoration: none; }
.btn-primary:active, .btn-primary:hover { background: var(--color-primary-active); text-decoration: none; color: var(--color-on-primary); }
.btn-secondary { display: inline-flex; align-items: center; background: var(--color-canvas); color: var(--color-ink); font-size: 16px; font-weight: 500; padding: 16px 24px; border-radius: var(--rounded-lg); border: 1px solid var(--color-hairline); cursor: pointer; transition: border-color 0.15s; text-decoration: none; margin-left: var(--spacing-md); }
.btn-secondary:hover { border-color: var(--color-ink); text-decoration: none; color: var(--color-ink); }
.btn-legal { display: inline-flex; align-items: center; background: var(--color-link); color: #fff; font-size: 13.12px; font-weight: 600; padding: 12px 10px; border-radius: var(--rounded-xs); border: none; cursor: pointer; margin-right: var(--spacing-xs); }
.btn-legal-reject { background: var(--color-surface-strong); color: var(--color-ink); }

section { padding: var(--spacing-section) 0; }

.section-label { font-size: 13px; font-weight: 500; letter-spacing: 0.08em; text-transform: uppercase; color: var(--color-muted); margin-bottom: var(--spacing-md); }
.section-title { font-size: 32px; font-weight: 400; color: var(--color-ink); line-height: 1.2; margin-bottom: var(--spacing-lg); }
.section-sub { font-size: 16px; color: var(--color-body); max-width: 560px; line-height: 1.6; margin-bottom: var(--spacing-xl); }

.articles-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--spacing-lg); }
.article-card { background: var(--color-canvas); border-radius: var(--rounded-md); border: 1px solid var(--color-hairline); overflow: hidden; }
.article-card img { width: 100%; aspect-ratio: 16/9; object-fit: cover; }
.article-card-body { padding: var(--spacing-md); }
.article-card-tag { font-size: 11px; font-weight: 500; letter-spacing: 0.1em; text-transform: uppercase; color: var(--color-muted); margin-bottom: var(--spacing-xs); }
.article-card-title { font-size: 18px; font-weight: 500; color: var(--color-ink); line-height: 1.4; margin-bottom: var(--spacing-xs); }
.article-card-title a { color: inherit; }
.article-card-title a:hover { text-decoration: underline; }
.article-card-excerpt { font-size: 14px; color: var(--color-body); line-height: 1.5; margin-bottom: var(--spacing-sm); }
.article-card-meta { font-size: 13px; color: var(--color-muted); }

.signature-coral { background: var(--color-signature-coral); border-radius: var(--rounded-lg); padding: var(--spacing-xxl); color: #fff; }
.signature-coral h2 { font-size: 32px; font-weight: 400; line-height: 1.2; margin-bottom: var(--spacing-md); color: #fff; }
.signature-coral p { font-size: 14px; line-height: 1.6; margin-bottom: var(--spacing-xl); color: rgba(255,255,255,0.88); }

.signature-forest { background: var(--color-signature-forest); border-radius: var(--rounded-lg); padding: var(--spacing-xxl); color: #fff; }
.signature-forest h2 { font-size: 32px; font-weight: 400; line-height: 1.2; margin-bottom: var(--spacing-md); color: #fff; }
.signature-forest p { font-size: 14px; line-height: 1.6; margin-bottom: var(--spacing-xl); color: rgba(255,255,255,0.88); }
.btn-on-dark { display: inline-flex; align-items: center; background: #fff; color: var(--color-ink); font-size: 16px; font-weight: 500; padding: 16px 24px; border-radius: var(--rounded-lg); text-decoration: none; }
.btn-on-dark:hover { text-decoration: none; opacity: 0.92; }

.cream-band { background: var(--color-signature-cream); padding: var(--spacing-section) 0; }
.cream-band h2 { font-size: 32px; font-weight: 400; color: var(--color-ink); margin-bottom: var(--spacing-lg); }
.cream-band p { font-size: 16px; color: var(--color-body); line-height: 1.6; max-width: 640px; }

.demo-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--spacing-lg); }
.demo-card { border-radius: var(--rounded-md); padding: var(--spacing-md); }
.demo-card.peach { background: var(--color-signature-peach); }
.demo-card.mint { background: var(--color-signature-mint); }
.demo-card.cream { background: var(--color-signature-cream); }
.demo-card h3 { font-size: 16px; font-weight: 500; color: var(--color-ink); margin-bottom: var(--spacing-xs); }
.demo-card p { font-size: 14px; color: var(--color-body); line-height: 1.5; }

.dark-cta { background: var(--color-surface-dark); border-radius: var(--rounded-lg); padding: var(--spacing-xxl); color: #fff; text-align: center; }
.dark-cta h2 { font-size: 32px; font-weight: 400; color: #fff; margin-bottom: var(--spacing-md); }
.dark-cta p { font-size: 16px; color: rgba(255,255,255,0.8); margin-bottom: var(--spacing-xl); }

.contact-form { background: var(--color-surface-soft); border-radius: var(--rounded-lg); padding: var(--spacing-xxl); max-width: 560px; }
.contact-form h2 { font-size: 24px; font-weight: 400; color: var(--color-ink); margin-bottom: var(--spacing-lg); }
.form-field { margin-bottom: var(--spacing-md); }
.form-field label { display: block; font-size: 14px; font-weight: 500; color: var(--color-ink); margin-bottom: var(--spacing-xs); }
.form-field input, .form-field textarea { width: 100%; background: var(--color-canvas); border: 1px solid var(--color-hairline); border-radius: var(--rounded-sm); padding: 12px 16px; font-size: 14px; color: var(--color-ink); height: 44px; font-family: var(--font-stack); }
.form-field input:focus, .form-field textarea:focus { outline: none; border-color: #458fff; }
.form-field textarea { height: auto; min-height: 100px; resize: vertical; }

.cta-band-light { background: var(--color-surface-strong); border-radius: var(--rounded-lg); padding: var(--spacing-xxl); margin: 0 auto; text-align: center; }
.cta-band-light h2 { font-size: 32px; font-weight: 400; color: var(--color-ink); margin-bottom: var(--spacing-lg); }

.site-footer { background: var(--color-canvas); border-top: 1px solid var(--color-hairline); padding: var(--spacing-section) 0 0; }
.footer-inner { display: grid; grid-template-columns: 2fr 1fr 1fr 1.5fr; gap: var(--spacing-xl); padding-bottom: var(--spacing-xxl); }
.footer-brand { font-size: 18px; font-weight: 600; color: var(--color-ink); margin-bottom: var(--spacing-sm); }
.footer-brand span { color: var(--color-signature-coral); }
.footer-desc { font-size: 14px; color: var(--color-muted); line-height: 1.6; }
.footer-heading { font-size: 14px; font-weight: 500; color: var(--color-ink); margin-bottom: var(--spacing-sm); }
.footer-col { display: flex; flex-direction: column; gap: 8px; }
.footer-col a { font-size: 14px; color: var(--color-muted); }
.footer-col a:hover { color: var(--color-ink); text-decoration: none; }
.footer-col p { font-size: 14px; color: var(--color-muted); }
.footer-bottom { border-top: 1px solid var(--color-hairline); padding: var(--spacing-md) 0; display: flex; }
.footer-bottom .container { display: flex; justify-content: space-between; align-items: center; font-size: 13px; color: var(--color-muted); width: 100%; }
.footer-legal-links { display: flex; gap: var(--spacing-md); }
.footer-legal-links a { color: var(--color-muted); font-size: 13px; }

.article-hero { padding: var(--spacing-section) 0 var(--spacing-xl); }
.article-hero h1 { font-size: 40px; font-weight: 400; color: var(--color-ink); line-height: 1.2; max-width: 780px; margin-bottom: var(--spacing-md); }
.article-hero .article-meta { font-size: 13px; color: var(--color-muted); margin-bottom: var(--spacing-xl); }
.article-hero img { width: 100%; max-height: 480px; object-fit: cover; border-radius: var(--rounded-md); }
.article-body { max-width: 720px; }
.article-body h2 { font-size: 24px; font-weight: 400; color: var(--color-ink); margin: var(--spacing-xl) 0 var(--spacing-md); }
.article-body h3 { font-size: 18px; font-weight: 500; color: var(--color-ink); margin: var(--spacing-lg) 0 var(--spacing-sm); }
.article-body p { font-size: 16px; color: var(--color-body); line-height: 1.7; margin-bottom: var(--spacing-md); }
.article-body ul, .article-body ol { padding-left: var(--spacing-lg); margin-bottom: var(--spacing-md); }
.article-body li { font-size: 16px; color: var(--color-body); line-height: 1.7; margin-bottom: var(--spacing-xs); }
.article-body a { color: var(--color-link); }
.article-body table { width: 100%; border-collapse: collapse; margin-bottom: var(--spacing-xl); font-size: 14px; }
.article-body th { background: var(--color-surface-soft); padding: var(--spacing-sm) var(--spacing-md); text-align: left; font-weight: 500; color: var(--color-ink); border-bottom: 2px solid var(--color-hairline); }
.article-body td { padding: var(--spacing-sm) var(--spacing-md); border-bottom: 1px solid var(--color-hairline); color: var(--color-body); }
.article-body tr:last-child td { border-bottom: none; }

.page-hero { padding: var(--spacing-section) 0 var(--spacing-xl); }
.page-hero h1 { font-size: 40px; font-weight: 400; color: var(--color-ink); max-width: 700px; margin-bottom: var(--spacing-md); }
.page-hero p.page-sub { font-size: 16px; color: var(--color-body); max-width: 580px; line-height: 1.6; }
.page-body { max-width: 720px; padding-bottom: var(--spacing-section); }
.page-body h2 { font-size: 24px; font-weight: 400; color: var(--color-ink); margin: var(--spacing-xl) 0 var(--spacing-md); }
.page-body p { font-size: 16px; color: var(--color-body); line-height: 1.7; margin-bottom: var(--spacing-md); }
.page-body ul { padding-left: var(--spacing-lg); margin-bottom: var(--spacing-md); }
.page-body li { font-size: 16px; color: var(--color-body); line-height: 1.7; margin-bottom: var(--spacing-xs); }
.page-body a { color: var(--color-link); }

#cookie-banner { position: fixed; bottom: 0; left: 0; right: 0; background: var(--color-surface-dark); color: #fff; padding: var(--spacing-lg) var(--spacing-xxl); z-index: 9999; display: flex; align-items: center; justify-content: space-between; gap: var(--spacing-lg); }
#cookie-banner p { font-size: 14px; color: rgba(255,255,255,0.85); line-height: 1.5; max-width: 680px; }
#cookie-banner p a { color: #fff; text-decoration: underline; }
.cookie-actions { display: flex; gap: var(--spacing-xs); flex-shrink: 0; }
#cookie-banner.hidden { display: none; }

@media (max-width: 1024px) {
  .articles-grid, .demo-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-inner { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .container { padding: 0 var(--spacing-md); }
  .hero-band h1 { font-size: 28px; }
  .section-title { font-size: 24px; }
  .articles-grid, .demo-grid { grid-template-columns: 1fr; }
  .main-nav { display: none; flex-direction: column; position: absolute; top: 64px; left: 0; right: 0; background: var(--color-canvas); border-bottom: 1px solid var(--color-hairline); padding: var(--spacing-md); gap: var(--spacing-md); }
  .main-nav.open { display: flex; }
  .nav-toggle { display: flex; }
  .footer-inner { grid-template-columns: 1fr; }
  .signature-coral h2, .signature-forest h2, .dark-cta h2 { font-size: 24px; }
  #cookie-banner { flex-direction: column; align-items: flex-start; }
  .article-hero h1, .page-hero h1 { font-size: 28px; }
}