*, *::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-on-primary: #ffffff;
  --color-link: #1b61c9;
  --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, Oxygen, Ubuntu, Cantarell, 'Helvetica Neue', sans-serif;
  --max-width: 1280px;
}

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

a { color: var(--color-link); text-decoration: none; }
a:hover { text-decoration: underline; }
img { display: block; max-width: 100%; height: auto; }

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

.site-nav { position: sticky; top: 0; z-index: 100; background: var(--color-canvas); height: 64px; border-bottom: 1px solid var(--color-hairline); }
.nav-inner { max-width: var(--max-width); margin: 0 auto; padding: 0 var(--spacing-xxl); height: 64px; display: flex; align-items: center; gap: var(--spacing-xl); }
.nav-logo { font-size: 16px; font-weight: 500; color: var(--color-ink); line-height: 1.4; flex-shrink: 0; }
.nav-links { display: flex; align-items: center; gap: var(--spacing-lg); margin-left: auto; }
.nav-links a { font-size: 14px; font-weight: 400; color: var(--color-body); line-height: 1.25; }
.nav-links a:hover { color: var(--color-ink); text-decoration: none; }
.nav-toggle { display: none; background: none; border: none; font-size: 22px; cursor: pointer; color: var(--color-ink); margin-left: auto; }

.btn-primary { display: inline-block; background: var(--color-primary); color: var(--color-on-primary); font-size: 16px; font-weight: 500; line-height: 1.4; padding: 16px 24px; border-radius: var(--rounded-lg); border: none; cursor: pointer; text-decoration: none; min-height: 48px; }
.btn-primary:hover { background: var(--color-primary-active); text-decoration: none; color: var(--color-on-primary); }
.btn-secondary { display: inline-block; background: var(--color-canvas); color: var(--color-ink); font-size: 16px; font-weight: 500; line-height: 1.4; padding: 16px 24px; border-radius: var(--rounded-lg); border: 1px solid var(--color-hairline); cursor: pointer; text-decoration: none; min-height: 48px; }
.btn-secondary:hover { text-decoration: none; color: var(--color-ink); border-color: #9297a0; }
.btn-secondary-on-dark { display: inline-block; background: var(--color-canvas); color: var(--color-ink); font-size: 16px; font-weight: 500; line-height: 1.4; padding: 16px 24px; border-radius: var(--rounded-lg); border: none; cursor: pointer; text-decoration: none; min-height: 48px; }
.btn-secondary-on-dark:hover { text-decoration: none; color: var(--color-ink); }

.hero-band { background: var(--color-canvas); padding: var(--spacing-section) 0; }
.hero-band .container { display: flex; flex-direction: column; gap: var(--spacing-lg); }
.hero-band h1 { font-size: 40px; font-weight: 400; line-height: 1.2; color: var(--color-ink); max-width: 720px; }
.hero-band p { font-size: 14px; font-weight: 400; line-height: 1.25; color: var(--color-body); max-width: 560px; }
.hero-cta { display: flex; gap: var(--spacing-md); flex-wrap: wrap; margin-top: var(--spacing-xs); }

.hero-img { width: 100%; max-height: 480px; object-fit: cover; border-radius: 0; }

.section { padding: var(--spacing-section) 0; background: var(--color-canvas); }
.section-title { font-size: 40px; font-weight: 400; line-height: 1.2; color: var(--color-ink); margin-bottom: var(--spacing-lg); }
.section-subtitle { font-size: 24px; font-weight: 400; line-height: 1.35; color: var(--color-ink); letter-spacing: 0.12px; margin-bottom: var(--spacing-md); }
.section-body { font-size: 14px; font-weight: 400; line-height: 1.25; color: var(--color-body); max-width: 680px; }

.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--spacing-lg); }
.card { background: var(--color-canvas); border-radius: var(--rounded-md); padding: var(--spacing-md); border: 1px solid var(--color-hairline); }
.card img { width: 100%; height: 200px; object-fit: cover; border-radius: var(--rounded-md); margin-bottom: var(--spacing-md); }
.card-tag { font-size: 12px; font-weight: 500; color: var(--color-muted); text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: var(--spacing-xs); }
.card-title { font-size: 18px; font-weight: 500; line-height: 1.4; color: var(--color-ink); margin-bottom: var(--spacing-xs); }
.card-title a { color: var(--color-ink); text-decoration: none; }
.card-title a:hover { text-decoration: underline; }
.card-meta { font-size: 13px; color: var(--color-muted); margin-top: var(--spacing-xs); }
.card-excerpt { font-size: 14px; color: var(--color-body); margin-top: var(--spacing-xs); line-height: 1.5; }

.signature-coral { background: var(--color-signature-coral); border-radius: var(--rounded-lg); padding: var(--spacing-xxl); }
.signature-coral h2 { font-size: 32px; font-weight: 400; line-height: 1.2; color: var(--color-on-primary); margin-bottom: var(--spacing-md); }
.signature-coral p { font-size: 14px; font-weight: 400; line-height: 1.25; color: var(--color-on-primary); max-width: 560px; margin-bottom: var(--spacing-lg); }

.signature-forest { background: var(--color-signature-forest); border-radius: var(--rounded-lg); padding: var(--spacing-xxl); }
.signature-forest h2 { font-size: 32px; font-weight: 400; line-height: 1.2; color: var(--color-on-primary); margin-bottom: var(--spacing-md); }
.signature-forest p { font-size: 14px; font-weight: 400; line-height: 1.25; color: var(--color-on-primary); max-width: 560px; margin-bottom: var(--spacing-lg); }

.signature-dark { background: var(--color-surface-dark); border-radius: var(--rounded-lg); padding: var(--spacing-xxl); }
.signature-dark h2 { font-size: 32px; font-weight: 400; line-height: 1.2; color: var(--color-on-primary); margin-bottom: var(--spacing-md); }
.signature-dark p { font-size: 14px; font-weight: 400; line-height: 1.25; color: var(--color-on-primary); max-width: 560px; margin-bottom: var(--spacing-lg); }

.cream-callout { background: var(--color-signature-cream); border-radius: var(--rounded-md); padding: var(--spacing-lg); }
.cream-callout h3 { font-size: 24px; font-weight: 400; line-height: 1.35; color: var(--color-ink); margin-bottom: var(--spacing-md); letter-spacing: 0.12px; }
.cream-callout p { font-size: 14px; color: var(--color-body); line-height: 1.5; }

.cta-band-light { background: var(--color-surface-strong); border-radius: var(--rounded-lg); padding: var(--spacing-xxl); text-align: center; }
.cta-band-light h2 { font-size: 32px; font-weight: 400; line-height: 1.2; color: var(--color-ink); margin-bottom: var(--spacing-lg); }

.section-soft { background: var(--color-surface-soft); padding: var(--spacing-section) 0; }

.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 p { font-size: 16px; font-weight: 500; line-height: 1.4; color: var(--color-ink); margin-bottom: var(--spacing-xs); }
.demo-card span { font-size: 14px; color: var(--color-body); }
.demo-card img { border-radius: var(--rounded-md); width: 100%; height: 180px; object-fit: cover; margin-bottom: var(--spacing-md); }

.article-layout { display: grid; grid-template-columns: 240px 1fr; gap: var(--spacing-xxl); align-items: start; }
.article-sidebar { position: sticky; top: 80px; }
.article-sidebar nav { display: flex; flex-direction: column; gap: var(--spacing-xs); }
.article-sidebar nav a { font-size: 14px; color: var(--color-body); padding: var(--spacing-xs) var(--spacing-sm); border-radius: var(--rounded-sm); border-left: 2px solid transparent; }
.article-sidebar nav a:hover { color: var(--color-ink); text-decoration: none; border-left-color: var(--color-ink); }
.article-sidebar nav a.active { color: var(--color-ink); border-left-color: var(--color-ink); font-weight: 500; }
.article-sidebar-title { font-size: 13px; font-weight: 500; color: var(--color-muted); text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: var(--spacing-sm); }
.article-content h1 { font-size: 40px; font-weight: 400; line-height: 1.2; color: var(--color-ink); margin-bottom: var(--spacing-lg); }
.article-content h2 { font-size: 32px; font-weight: 400; line-height: 1.2; color: var(--color-ink); margin-top: var(--spacing-xxl); margin-bottom: var(--spacing-md); }
.article-content h3 { font-size: 24px; font-weight: 400; line-height: 1.35; color: var(--color-ink); margin-top: var(--spacing-xl); margin-bottom: var(--spacing-sm); letter-spacing: 0.12px; }
.article-content p { font-size: 14px; line-height: 1.6; color: var(--color-body); margin-bottom: var(--spacing-md); }
.article-content ul, .article-content ol { margin-left: var(--spacing-lg); margin-bottom: var(--spacing-md); }
.article-content li { font-size: 14px; line-height: 1.6; color: var(--color-body); margin-bottom: var(--spacing-xs); }
.article-content a { color: var(--color-link); }
.article-content img { border-radius: var(--rounded-md); margin: var(--spacing-xl) 0; width: 100%; }
.article-meta { font-size: 13px; font-weight: 500; color: var(--color-muted); letter-spacing: 0.16px; margin-bottom: var(--spacing-xl); display: flex; gap: var(--spacing-md); flex-wrap: wrap; }

.page-hero { background: var(--color-canvas); padding: var(--spacing-section) 0; border-bottom: 1px solid var(--color-hairline); }
.page-hero h1 { font-size: 40px; font-weight: 400; line-height: 1.2; color: var(--color-ink); margin-bottom: var(--spacing-md); }
.page-hero p { font-size: 14px; color: var(--color-body); max-width: 560px; }

.page-content { padding: var(--spacing-section) 0; }
.page-content h2 { font-size: 32px; font-weight: 400; line-height: 1.2; color: var(--color-ink); margin-top: var(--spacing-xxl); margin-bottom: var(--spacing-md); }
.page-content h3 { font-size: 24px; font-weight: 400; line-height: 1.35; color: var(--color-ink); margin-top: var(--spacing-xl); margin-bottom: var(--spacing-sm); }
.page-content p { font-size: 14px; line-height: 1.6; color: var(--color-body); margin-bottom: var(--spacing-md); max-width: 720px; }
.page-content ul, .page-content ol { margin-left: var(--spacing-lg); margin-bottom: var(--spacing-md); }
.page-content li { font-size: 14px; line-height: 1.6; color: var(--color-body); margin-bottom: var(--spacing-xs); max-width: 680px; }

.contact-form { display: flex; flex-direction: column; gap: var(--spacing-sm); }
.contact-form input, .contact-form textarea { font-family: var(--font-stack); font-size: 14px; background: var(--color-canvas); color: var(--color-ink); border: 1px solid var(--color-hairline); border-radius: var(--rounded-sm); padding: 12px 16px; height: 44px; outline: none; width: 100%; }
.contact-form input:focus, .contact-form textarea:focus { border-color: #458fff; }
.contact-form textarea { height: auto; min-height: 100px; resize: vertical; }

.site-footer { background: var(--color-canvas); border-top: 1px solid var(--color-hairline); padding: var(--spacing-section) 0 var(--spacing-xl); }
.footer-inner { max-width: var(--max-width); margin: 0 auto; padding: 0 var(--spacing-xxl); }
.footer-cols { display: grid; grid-template-columns: 2fr 1fr 1fr 1.5fr; gap: var(--spacing-xl); margin-bottom: var(--spacing-xxl); }
.footer-brand { font-size: 16px; font-weight: 500; color: var(--color-ink); margin-bottom: var(--spacing-sm); }
.footer-tagline { font-size: 14px; color: var(--color-muted); line-height: 1.5; margin-bottom: var(--spacing-md); }
.footer-contact { font-size: 14px; color: var(--color-muted); line-height: 1.8; }
.footer-contact a { color: var(--color-muted); }
.footer-col-title { font-size: 14px; font-weight: 500; color: var(--color-ink); margin-bottom: var(--spacing-md); }
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: var(--spacing-sm); }
.footer-col ul a { font-size: 14px; color: var(--color-muted); }
.footer-col ul a:hover { color: var(--color-ink); text-decoration: none; }
.footer-bottom { border-top: 1px solid var(--color-hairline); padding-top: var(--spacing-lg); display: flex; flex-direction: column; gap: var(--spacing-xs); }
.footer-bottom p { font-size: 13px; color: var(--color-muted); }
.footer-bottom a { color: var(--color-muted); }
.footer-disclaimer { font-size: 12px; color: var(--color-muted); line-height: 1.5; margin-top: var(--spacing-xs); }
.footer-legal { display: flex; gap: var(--spacing-md); flex-wrap: wrap; }

.cookie-banner { position: fixed; bottom: 0; left: 0; right: 0; background: var(--color-primary); padding: var(--spacing-md) var(--spacing-xxl); display: flex; align-items: center; justify-content: space-between; gap: var(--spacing-lg); z-index: 9999; flex-wrap: wrap; }
.cookie-banner p { font-size: 14px; color: var(--color-on-primary); line-height: 1.5; }
.cookie-banner a { color: var(--color-on-primary); text-decoration: underline; }
.cookie-actions { display: flex; gap: var(--spacing-sm); }
.btn-legal { font-family: var(--font-stack); font-size: 13.12px; font-weight: 600; background: var(--color-link); color: var(--color-on-primary); border: none; border-radius: var(--rounded-xs); padding: 12px 10px; cursor: pointer; line-height: 1.2; }
.btn-legal-reject { background: transparent; color: var(--color-on-primary); border: 1px solid rgba(255,255,255,0.4); border-radius: var(--rounded-xs); font-family: var(--font-stack); font-size: 13.12px; font-weight: 600; padding: 12px 10px; cursor: pointer; line-height: 1.2; }

.breadcrumb { font-size: 13px; color: var(--color-muted); margin-bottom: var(--spacing-md); }
.breadcrumb a { color: var(--color-muted); }
.breadcrumb a:hover { color: var(--color-ink); }

.related-articles { padding: var(--spacing-section) 0; background: var(--color-surface-soft); }
.related-articles h2 { font-size: 32px; font-weight: 400; line-height: 1.2; color: var(--color-ink); margin-bottom: var(--spacing-lg); }

.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: var(--spacing-xxl); align-items: center; }
.two-col img { border-radius: var(--rounded-md); width: 100%; height: 340px; object-fit: cover; }

@media (max-width: 1024px) {
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .demo-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-cols { grid-template-columns: 1fr 1fr; }
  .two-col { grid-template-columns: 1fr; }
  .article-layout { grid-template-columns: 1fr; }
  .article-sidebar { display: none; }
}

@media (max-width: 768px) {
  :root { --spacing-section: 60px; --spacing-xxl: 24px; }
  .container { padding: 0 var(--spacing-md); }
  .nav-inner { padding: 0 var(--spacing-md); }
  .footer-inner { padding: 0 var(--spacing-md); }
  .card-grid { grid-template-columns: 1fr; }
  .demo-grid { grid-template-columns: 1fr; }
  .footer-cols { grid-template-columns: 1fr; }
  .hero-band h1 { font-size: 28px; }
  .section-title { font-size: 28px; }
  .article-content h1 { font-size: 28px; }
  .article-content h2 { font-size: 24px; }
  .signature-coral h2, .signature-forest h2, .signature-dark h2 { font-size: 24px; }
  .nav-toggle { display: block; }
  .nav-links { display: none; position: fixed; top: 64px; left: 0; right: 0; bottom: 0; background: var(--color-canvas); flex-direction: column; align-items: flex-start; padding: var(--spacing-xl) var(--spacing-lg); gap: var(--spacing-xl); border-top: 1px solid var(--color-hairline); }
  .nav-links.open { display: flex; }
  .cookie-banner { padding: var(--spacing-md); }
  .cta-band-light { border-radius: 0; }
}