@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&family=Inter+Display:wght@400;475;500&display=swap');

*, *::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-surface-dark-elevated: #1d1f25;
  --color-hairline: #dddddd;
  --color-ink: #181d26;
  --color-body: #333840;
  --color-muted: #41454d;
  --color-on-primary: #ffffff;
  --color-link: #1b61c9;
  --color-link-active: #1a3866;
  --color-info-border: #458fff;
  --color-signature-coral: #aa2d00;
  --color-signature-forest: #0a2e0e;
  --color-signature-cream: #f5e9d4;
  --color-signature-peach: #fcab79;
  --color-signature-mint: #a8d8c4;
  --color-signature-yellow: #f4d35e;
  --rounded-xs: 2px;
  --rounded-sm: 6px;
  --rounded-md: 10px;
  --rounded-lg: 12px;
  --spacing-xxs: 4px;
  --spacing-xs: 8px;
  --spacing-sm: 12px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-xxl: 48px;
  --spacing-section: 96px;
}

html { font-size: 16px; scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Helvetica Neue', sans-serif;
  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:active { color: var(--color-link-active); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }

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

/* TOP NAV */
.top-nav {
  height: 64px;
  background: var(--color-canvas);
  border-bottom: 1px solid var(--color-hairline);
  position: sticky;
  top: 0;
  z-index: 100;
}
.top-nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}
.nav-brand {
  font-family: 'Inter Display', 'Inter', sans-serif;
  font-size: 18px;
  font-weight: 500;
  color: var(--color-ink);
  text-decoration: none;
}
.nav-links {
  display: flex;
  gap: var(--spacing-lg);
  align-items: center;
}
.nav-links a {
  font-size: 14px;
  font-weight: 400;
  color: var(--color-body);
  text-decoration: none;
}
.nav-links a:active { color: var(--color-ink); }
.nav-cta {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}
.btn-primary {
  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;
  display: inline-block;
  text-decoration: none;
}
.btn-primary:active { background: var(--color-primary-active); color: var(--color-on-primary); }
.btn-secondary {
  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;
  display: inline-block;
  text-decoration: none;
}
.btn-secondary:active { background: var(--color-surface-soft); }
.btn-secondary-on-dark {
  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;
  display: inline-block;
  text-decoration: none;
}
.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; background: none; border: none; padding: 4px; }
.hamburger span { display: block; width: 24px; height: 2px; background: var(--color-ink); border-radius: 2px; }

/* HERO BAND */
.hero-band {
  padding: var(--spacing-section) 0;
  background: var(--color-canvas);
}
.hero-band h1 {
  font-family: 'Inter Display', 'Inter', sans-serif;
  font-size: 40px;
  font-weight: 400;
  line-height: 1.2;
  color: var(--color-ink);
  max-width: 640px;
  margin-bottom: var(--spacing-lg);
}
.hero-band p {
  font-size: 14px;
  font-weight: 400;
  color: var(--color-body);
  max-width: 520px;
  margin-bottom: var(--spacing-xl);
  line-height: 1.6;
}
.hero-actions {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

/* SECTION RHYTHM */
.section {
  padding: var(--spacing-section) 0;
}
.section-title {
  font-family: 'Inter Display', 'Inter', sans-serif;
  font-size: 32px;
  font-weight: 400;
  line-height: 1.2;
  color: var(--color-ink);
  margin-bottom: var(--spacing-lg);
}
.section-subtitle {
  font-size: 14px;
  color: var(--color-body);
  max-width: 560px;
  line-height: 1.6;
  margin-bottom: var(--spacing-xl);
}

/* SIGNATURE CORAL CARD */
.signature-coral-card {
  background: var(--color-signature-coral);
  border-radius: var(--rounded-lg);
  padding: var(--spacing-xxl);
  color: var(--color-on-primary);
  margin: var(--spacing-section) 0;
}
.signature-coral-card h2 {
  font-family: 'Inter Display', 'Inter', sans-serif;
  font-size: 32px;
  font-weight: 400;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
  color: var(--color-on-primary);
}
.signature-coral-card p {
  font-size: 14px;
  line-height: 1.6;
  margin-bottom: var(--spacing-xl);
  max-width: 560px;
  opacity: 0.9;
}

/* SIGNATURE FOREST CARD */
.signature-forest-card {
  background: var(--color-signature-forest);
  border-radius: var(--rounded-lg);
  padding: var(--spacing-xxl);
  color: var(--color-on-primary);
}
.signature-forest-card h2 {
  font-family: 'Inter Display', 'Inter', sans-serif;
  font-size: 32px;
  font-weight: 400;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
  color: var(--color-on-primary);
}
.signature-forest-card p {
  font-size: 14px;
  line-height: 1.6;
  margin-bottom: var(--spacing-xl);
  max-width: 560px;
  opacity: 0.9;
}

/* HERO CARD DARK */
.hero-card-dark {
  background: var(--color-surface-dark);
  border-radius: var(--rounded-lg);
  padding: var(--spacing-xxl);
  color: var(--color-on-primary);
  margin: var(--spacing-section) 0;
}
.hero-card-dark h2 {
  font-family: 'Inter Display', 'Inter', sans-serif;
  font-size: 32px;
  font-weight: 400;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
  color: var(--color-on-primary);
}
.hero-card-dark p {
  font-size: 14px;
  line-height: 1.6;
  max-width: 560px;
  opacity: 0.85;
}

/* CREAM CALLOUT */
.cream-callout {
  background: var(--color-signature-cream);
  border-radius: var(--rounded-md);
  padding: var(--spacing-xxl);
  margin: var(--spacing-section) 0;
}
.cream-callout h2 {
  font-family: 'Inter Display', 'Inter', sans-serif;
  font-size: 32px;
  font-weight: 400;
  line-height: 1.2;
  color: var(--color-ink);
  margin-bottom: var(--spacing-md);
}
.cream-callout p {
  font-size: 14px;
  color: var(--color-body);
  line-height: 1.6;
  max-width: 560px;
}

/* ARTICLE CARD GRID */
.article-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
}
.article-card {
  background: var(--color-canvas);
  border-radius: var(--rounded-md);
  overflow: hidden;
  border: 1px solid var(--color-hairline);
}
.article-card-img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
}
.article-card-body {
  padding: var(--spacing-md);
}
.article-card-tag {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: var(--spacing-xs);
}
.article-card-title {
  font-size: 18px;
  font-weight: 500;
  line-height: 1.4;
  color: var(--color-ink);
  margin-bottom: var(--spacing-xs);
  text-decoration: none;
  display: block;
}
.article-card-title:active { color: var(--color-primary-active); }
.article-card-meta {
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.01em;
  color: var(--color-muted);
}

/* DEMO GRID */
.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-yellow { background: var(--color-signature-yellow); }
.demo-card h3 {
  font-size: 16px;
  font-weight: 500;
  line-height: 1.4;
  color: var(--color-ink);
  margin-bottom: var(--spacing-xs);
}
.demo-card p {
  font-size: 14px;
  color: var(--color-body);
  line-height: 1.6;
}
.demo-card img {
  width: 100%;
  border-radius: var(--rounded-sm);
  margin-bottom: var(--spacing-sm);
  aspect-ratio: 4/3;
  object-fit: cover;
}

/* CTA BAND LIGHT */
.cta-band-light {
  background: var(--color-surface-strong);
  border-radius: var(--rounded-lg);
  padding: var(--spacing-xxl);
  text-align: center;
  margin: var(--spacing-section) 0;
}
.cta-band-light h2 {
  font-family: 'Inter Display', 'Inter', sans-serif;
  font-size: 32px;
  font-weight: 400;
  line-height: 1.2;
  color: var(--color-ink);
  margin-bottom: var(--spacing-lg);
}

/* SURFACE SOFT SECTION */
.surface-soft-section {
  background: var(--color-surface-soft);
  padding: var(--spacing-section) 0;
}

/* FORM */
.contact-form {
  max-width: 480px;
}
.form-group {
  margin-bottom: var(--spacing-md);
}
.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-ink);
  margin-bottom: var(--spacing-xs);
}
.form-group input,
.form-group textarea {
  width: 100%;
  background: var(--color-canvas);
  color: var(--color-ink);
  font-family: inherit;
  font-size: 14px;
  font-weight: 400;
  border: 1px solid var(--color-hairline);
  border-radius: var(--rounded-sm);
  padding: 12px 16px;
  height: 44px;
  outline: none;
}
.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--color-info-border);
}
.form-group textarea {
  height: auto;
  min-height: 120px;
  resize: vertical;
}

/* ARTICLE PAGE */
.article-hero {
  padding: var(--spacing-section) 0 var(--spacing-xl);
  background: var(--color-canvas);
}
.article-tag {
  font-size: 12px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-muted);
  margin-bottom: var(--spacing-sm);
}
.article-hero h1 {
  font-family: 'Inter Display', 'Inter', sans-serif;
  font-size: 40px;
  font-weight: 400;
  line-height: 1.2;
  color: var(--color-ink);
  max-width: 760px;
  margin-bottom: var(--spacing-md);
}
.article-hero-meta {
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.01em;
  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: 760px;
  padding: var(--spacing-xl) 0 var(--spacing-section);
}
.article-body h2 {
  font-family: 'Inter Display', 'Inter', sans-serif;
  font-size: 24px;
  font-weight: 400;
  line-height: 1.35;
  color: var(--color-ink);
  margin: var(--spacing-xl) 0 var(--spacing-md);
  letter-spacing: 0.12px;
}
.article-body h3 {
  font-size: 20px;
  font-weight: 400;
  line-height: 1.5;
  color: var(--color-ink);
  margin: var(--spacing-lg) 0 var(--spacing-sm);
}
.article-body p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-body);
  margin-bottom: var(--spacing-md);
}
.article-body ul {
  list-style: disc;
  padding-left: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
}
.article-body ul li {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-body);
  margin-bottom: var(--spacing-xs);
}
.article-body a {
  color: var(--color-link);
}
.article-body a:active { color: var(--color-link-active); }
.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: var(--spacing-md);
  font-size: 14px;
}
.article-body th,
.article-body td {
  padding: 12px;
  border-bottom: 1px solid var(--color-hairline);
  text-align: left;
  color: var(--color-body);
}
.article-body th {
  font-weight: 500;
  color: var(--color-ink);
}

/* STAT CARDS */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}
.stat-card {
  background: var(--color-surface-soft);
  border-radius: var(--rounded-md);
  padding: var(--spacing-xl);
  border: 1px solid var(--color-hairline);
}
.stat-number {
  font-family: 'Inter Display', 'Inter', sans-serif;
  font-size: 32px;
  font-weight: 475;
  color: var(--color-ink);
  line-height: 1.1;
  margin-bottom: var(--spacing-xs);
}
.stat-label {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.4;
}

/* PAGES */
.page-hero {
  padding: var(--spacing-section) 0 var(--spacing-xl);
}
.page-hero h1 {
  font-family: 'Inter Display', 'Inter', sans-serif;
  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;
  line-height: 1.6;
}
.page-body {
  max-width: 760px;
  padding-bottom: var(--spacing-section);
}
.page-body h2 {
  font-family: 'Inter Display', 'Inter', sans-serif;
  font-size: 24px;
  font-weight: 400;
  line-height: 1.35;
  color: var(--color-ink);
  margin: var(--spacing-xl) 0 var(--spacing-md);
  letter-spacing: 0.12px;
}
.page-body h3 {
  font-size: 20px;
  font-weight: 400;
  line-height: 1.5;
  color: var(--color-ink);
  margin: var(--spacing-lg) 0 var(--spacing-sm);
}
.page-body p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-body);
  margin-bottom: var(--spacing-md);
}
.page-body ul {
  list-style: disc;
  padding-left: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
}
.page-body ul li {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-body);
  margin-bottom: var(--spacing-xs);
}
.page-body a { color: var(--color-link); }

/* FOOTER */
footer {
  background: var(--color-canvas);
  border-top: 1px solid var(--color-hairline);
  padding: var(--spacing-section) 0 var(--spacing-xl);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}
.footer-brand p {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.6;
  margin-top: var(--spacing-sm);
  max-width: 280px;
}
.footer-col h4 {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-ink);
  margin-bottom: var(--spacing-md);
}
.footer-col ul li {
  margin-bottom: var(--spacing-xs);
}
.footer-col ul li a {
  font-size: 14px;
  color: var(--color-muted);
  text-decoration: none;
}
.footer-col ul li a:active { color: var(--color-ink); }
.footer-legal {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--color-hairline);
  font-size: 14px;
  color: var(--color-muted);
  flex-wrap: wrap;
  gap: var(--spacing-md);
}
.footer-legal-links {
  display: flex;
  gap: var(--spacing-lg);
}
.footer-legal-links a {
  font-size: 14px;
  color: var(--color-muted);
}

/* COOKIE BANNER */
#cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--color-surface-dark);
  color: var(--color-on-primary);
  padding: var(--spacing-lg) var(--spacing-xxl);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-lg);
  z-index: 999;
  flex-wrap: wrap;
}
#cookie-banner p {
  font-size: 14px;
  line-height: 1.6;
  max-width: 720px;
  opacity: 0.85;
}
#cookie-banner p a { color: var(--color-on-primary); text-decoration: underline; }
.cookie-actions {
  display: flex;
  gap: var(--spacing-sm);
  flex-shrink: 0;
}
.btn-cookie-accept {
  background: var(--color-link);
  color: var(--color-on-primary);
  font-size: 13.12px;
  font-weight: 600;
  padding: 12px 10px;
  border-radius: var(--rounded-xs);
  border: none;
  cursor: pointer;
  white-space: nowrap;
}
.btn-cookie-reject {
  background: transparent;
  color: var(--color-on-primary);
  font-size: 13.12px;
  font-weight: 600;
  padding: 12px 10px;
  border-radius: var(--rounded-xs);
  border: 1px solid rgba(255,255,255,0.3);
  cursor: pointer;
  white-space: nowrap;
}

/* BREADCRUMB */
.breadcrumb {
  padding: var(--spacing-md) 0;
  font-size: 14px;
  color: var(--color-muted);
}
.breadcrumb a {
  color: var(--color-muted);
}
.breadcrumb span { margin: 0 var(--spacing-xs); }

/* DISCLAIMER */
.disclaimer {
  background: var(--color-surface-soft);
  border: 1px solid var(--color-hairline);
  border-radius: var(--rounded-md);
  padding: var(--spacing-lg);
  margin: var(--spacing-xl) 0;
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.6;
}

/* RELATED ARTICLES */
.related-section {
  padding: var(--spacing-section) 0;
  border-top: 1px solid var(--color-hairline);
}
.related-section h2 {
  font-family: 'Inter Display', 'Inter', sans-serif;
  font-size: 24px;
  font-weight: 400;
  line-height: 1.35;
  color: var(--color-ink);
  margin-bottom: var(--spacing-lg);
  letter-spacing: 0.12px;
}

/* MOBILE NAV OVERLAY */
.mobile-nav {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: var(--color-canvas);
  z-index: 200;
  flex-direction: column;
  padding: var(--spacing-xxl);
}
.mobile-nav.open { display: flex; }
.mobile-nav-close {
  align-self: flex-end;
  background: none;
  border: none;
  font-size: 24px;
  cursor: pointer;
  color: var(--color-ink);
  margin-bottom: var(--spacing-xl);
}
.mobile-nav a {
  font-size: 24px;
  font-weight: 400;
  color: var(--color-ink);
  padding: var(--spacing-md) 0;
  border-bottom: 1px solid var(--color-hairline);
  text-decoration: none;
}

/* RESPONSIVE */
@media (max-width: 1024px) {
  .article-grid { grid-template-columns: repeat(2, 1fr); }
  .demo-grid { grid-template-columns: repeat(2, 1fr); }
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: var(--spacing-lg); }
}

@media (max-width: 768px) {
  .container { padding: 0 var(--spacing-md); }
  .nav-links { display: none; }
  .nav-cta { display: none; }
  .hamburger { display: flex; }
  .hero-band { padding: var(--spacing-xxl) 0; }
  .hero-band h1 { font-size: 28px; }
  .section { padding: var(--spacing-xxl) 0; }
  .section-title { font-size: 24px; }
  .article-grid { grid-template-columns: 1fr; }
  .demo-grid { grid-template-columns: 1fr; }
  .stat-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-legal { flex-direction: column; text-align: center; }
  .footer-legal-links { flex-wrap: wrap; justify-content: center; }
  .signature-coral-card { padding: var(--spacing-lg); }
  .signature-coral-card h2 { font-size: 24px; }
  .signature-forest-card { padding: var(--spacing-lg); }
  .signature-forest-card h2 { font-size: 24px; }
  .hero-card-dark { padding: var(--spacing-lg); }
  .hero-card-dark h2 { font-size: 24px; }
  .cream-callout { padding: var(--spacing-lg); }
  .cta-band-light { padding: var(--spacing-lg); }
  .cta-band-light h2 { font-size: 24px; }
  .article-hero h1 { font-size: 28px; }
  .page-hero h1 { font-size: 28px; }
  #cookie-banner { padding: var(--spacing-md); flex-direction: column; }
}