:root {
  --color-primary: #181d26;
  --color-primary-active: #0d1218;
  --color-canvas: #ffffff;
  --color-surface-soft: #f8fafc;
  --color-surface-strong: #e0e2e6;
  --color-surface-dark: #181d26;
  --color-hairline: #dddddd;
  --color-ink: #181d26;
  --color-body: #333840;
  --color-muted: #41454d;
  --color-on-primary: #ffffff;
  --color-link: #1b61c9;
  --color-link-active: #1a3866;
  --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;
  --rounded-pill: 9999px;
  --rounded-full: 50%;

  --spacing-xxs: 4px;
  --spacing-xs: 8px;
  --spacing-sm: 12px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-xxl: 48px;
  --spacing-section: 96px;

  --font-haas: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Fira Sans", "Droid Sans", "Helvetica Neue", sans-serif;
}

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

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

body {
  font-family: var(--font-haas);
  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 { color: var(--color-link-active); }

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

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

/* TOP NAV */
.top-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-canvas);
  border-bottom: 1px solid var(--color-hairline);
  height: 64px;
  display: flex;
  align-items: center;
}
.top-nav .nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--spacing-xxl);
}
.nav-logo {
  font-size: 18px;
  font-weight: 500;
  color: var(--color-ink);
  letter-spacing: -0.3px;
  white-space: nowrap;
}
.nav-logo span { color: var(--color-signature-coral); }
.nav-links {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
  list-style: none;
}
.nav-links a {
  font-size: 14px;
  font-weight: 400;
  color: var(--color-body);
}
.nav-links a:hover { color: var(--color-ink); }
.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}
.nav-hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-xs);
  flex-direction: column;
  gap: 5px;
}
.nav-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-ink);
  border-radius: 2px;
  transition: all 0.2s;
}

/* BUTTONS */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary);
  color: var(--color-on-primary);
  font-size: 16px;
  font-weight: 500;
  line-height: 1.4;
  padding: 12px 24px;
  border-radius: var(--rounded-lg);
  border: none;
  cursor: pointer;
  white-space: nowrap;
  text-decoration: none;
  box-shadow: 0 1px 4px rgba(27, 97, 201, 0.10);
  transition: background 0.15s;
}
.btn-primary:hover { background: var(--color-primary); color: var(--color-on-primary); }
.btn-primary:active { background: var(--color-primary-active); }

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--color-canvas);
  color: var(--color-ink);
  font-size: 16px;
  font-weight: 500;
  line-height: 1.4;
  padding: 12px 24px;
  border-radius: var(--rounded-lg);
  border: 1px solid var(--color-hairline);
  cursor: pointer;
  white-space: nowrap;
  text-decoration: none;
  transition: border-color 0.15s;
}
.btn-secondary:hover { color: var(--color-ink); border-color: var(--color-muted); }

.btn-secondary-on-dark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--color-canvas);
  color: var(--color-ink);
  font-size: 16px;
  font-weight: 500;
  line-height: 1.4;
  padding: 12px 24px;
  border-radius: var(--rounded-lg);
  border: none;
  cursor: pointer;
  white-space: nowrap;
  text-decoration: none;
  transition: opacity 0.15s;
}
.btn-secondary-on-dark:hover { opacity: 0.92; color: var(--color-ink); }

/* HERO BAND */
.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: 680px;
  margin-bottom: var(--spacing-lg);
}
.hero-band p {
  font-size: 18px;
  font-weight: 400;
  line-height: 1.5;
  color: var(--color-body);
  max-width: 560px;
  margin-bottom: var(--spacing-xl);
}
.hero-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

/* SECTION TITLES */
.section-title {
  font-size: 24px;
  font-weight: 400;
  line-height: 1.35;
  letter-spacing: 0.12px;
  color: var(--color-ink);
  margin-bottom: var(--spacing-sm);
}
.section-subtitle {
  font-size: 14px;
  font-weight: 400;
  color: var(--color-body);
  margin-bottom: var(--spacing-xl);
  max-width: 560px;
}

/* EDITORIAL SECTION */
.editorial-section {
  padding: var(--spacing-section) 0;
  background: var(--color-canvas);
}

/* SIGNATURE CORAL CARD */
.signature-coral-card {
  background: var(--color-signature-coral);
  color: var(--color-on-primary);
  border-radius: var(--rounded-lg);
  padding: var(--spacing-xxl);
  margin: var(--spacing-section) 0;
}
.signature-coral-card h2 {
  font-size: 32px;
  font-weight: 400;
  line-height: 1.2;
  color: var(--color-on-primary);
  margin-bottom: var(--spacing-md);
  max-width: 620px;
}
.signature-coral-card p {
  font-size: 14px;
  font-weight: 400;
  color: rgba(255,255,255,0.85);
  margin-bottom: var(--spacing-xl);
  max-width: 520px;
}

/* HERO CARD DARK */
.hero-card-dark {
  background: var(--color-surface-dark);
  color: var(--color-on-primary);
  border-radius: var(--rounded-lg);
  padding: var(--spacing-xxl);
  margin: var(--spacing-section) 0;
}
.hero-card-dark h2 {
  font-size: 32px;
  font-weight: 400;
  line-height: 1.2;
  color: var(--color-on-primary);
  margin-bottom: var(--spacing-md);
  max-width: 620px;
}
.hero-card-dark p {
  font-size: 14px;
  font-weight: 400;
  color: rgba(255,255,255,0.80);
  margin-bottom: var(--spacing-xl);
  max-width: 520px;
}

/* CREAM CALLOUT */
.cream-callout-card {
  background: var(--color-signature-cream);
  border-radius: var(--rounded-md);
  padding: var(--spacing-lg);
}
.cream-callout-card h3 {
  font-size: 20px;
  font-weight: 400;
  line-height: 1.5;
  color: var(--color-ink);
  margin-bottom: var(--spacing-xs);
}
.cream-callout-card p {
  font-size: 14px;
  color: var(--color-body);
}

/* DEMO GRID */
.demo-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
}
.demo-grid-card {
  background: var(--color-canvas);
  border-radius: var(--rounded-md);
  padding: var(--spacing-md);
  border: 1px solid var(--color-hairline);
}
.demo-grid-card.peach { background: var(--color-signature-peach); border-color: transparent; }
.demo-grid-card.mint  { background: var(--color-signature-mint);  border-color: transparent; }
.demo-grid-card.cream { background: var(--color-signature-cream); border-color: transparent; }
.demo-grid-card img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  border-radius: var(--rounded-md);
  margin-bottom: var(--spacing-md);
}
.demo-grid-card h3 {
  font-size: 16px;
  font-weight: 500;
  line-height: 1.4;
  color: var(--color-ink);
  margin-bottom: var(--spacing-xs);
}
.demo-grid-card p {
  font-size: 14px;
  color: var(--color-body);
}
.demo-grid-card a {
  display: inline-block;
  margin-top: var(--spacing-sm);
  font-size: 14px;
  font-weight: 500;
  color: var(--color-link);
}

/* ARTICLE CARDS */
.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);
  padding: var(--spacing-md);
  border: 1px solid var(--color-hairline);
}
.article-card img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  border-radius: var(--rounded-md);
  margin-bottom: var(--spacing-md);
}
.article-card .category-tag {
  font-size: 12px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-muted);
  margin-bottom: var(--spacing-xs);
}
.article-card h3 {
  font-size: 18px;
  font-weight: 500;
  line-height: 1.4;
  color: var(--color-ink);
  margin-bottom: var(--spacing-xs);
}
.article-card p {
  font-size: 14px;
  color: var(--color-body);
  margin-bottom: var(--spacing-sm);
}
.article-card .meta {
  font-size: 13px;
  color: var(--color-muted);
}

/* FEATURE CARD TABBED */
.feature-tabbed {
  background: var(--color-surface-soft);
  border-radius: var(--rounded-lg);
  padding: var(--spacing-xl);
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: var(--spacing-xl);
  margin: var(--spacing-section) 0;
}
.tab-rail {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}
.tab-btn {
  font-size: 20px;
  font-weight: 400;
  line-height: 1.5;
  color: var(--color-muted);
  background: none;
  border: none;
  text-align: left;
  cursor: pointer;
  padding: var(--spacing-xs) 0;
  border-left: 2px solid transparent;
  padding-left: var(--spacing-md);
  transition: color 0.15s, border-color 0.15s;
}
.tab-btn.active {
  color: var(--color-ink);
  border-left-color: var(--color-signature-coral);
}
.tab-pane { display: none; }
.tab-pane.active { display: block; }
.tab-pane h3 {
  font-size: 24px;
  font-weight: 400;
  color: var(--color-ink);
  margin-bottom: var(--spacing-md);
}
.tab-pane p {
  font-size: 14px;
  color: var(--color-body);
  margin-bottom: var(--spacing-md);
}

/* 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-size: 32px;
  font-weight: 400;
  color: var(--color-ink);
  margin-bottom: var(--spacing-lg);
}

/* CONTACT FORM */
.contact-form {
  max-width: 560px;
}
.contact-form .form-group {
  margin-bottom: var(--spacing-md);
}
.contact-form label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-ink);
  margin-bottom: var(--spacing-xs);
}
.contact-form input,
.contact-form textarea {
  width: 100%;
  height: 44px;
  background: var(--color-canvas);
  color: var(--color-ink);
  font-size: 14px;
  font-family: var(--font-haas);
  border: 1px solid var(--color-hairline);
  border-radius: var(--rounded-sm);
  padding: 12px 16px;
  outline: none;
  transition: border-color 0.15s;
}
.contact-form textarea { height: 120px; resize: vertical; }
.contact-form input:focus,
.contact-form textarea:focus {
  border-color: #458fff;
}

/* FOOTER */
.site-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 1fr 1fr 1fr 1fr 1fr;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xxl);
}
.footer-brand p {
  font-size: 14px;
  color: var(--color-muted);
  margin-top: var(--spacing-md);
  max-width: 260px;
}
.footer-col h4 {
  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-xs);
}
.footer-col ul li a {
  font-size: 14px;
  color: var(--color-muted);
}
.footer-col ul li a:hover { color: var(--color-ink); }
.footer-legal {
  border-top: 1px solid var(--color-hairline);
  padding-top: var(--spacing-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-md);
}
.footer-legal p {
  font-size: 14px;
  color: var(--color-muted);
}
.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;
  z-index: 999;
  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);
  flex-wrap: wrap;
  border-top: 1px solid rgba(255,255,255,0.1);
}
.cookie-banner p {
  font-size: 14px;
  color: rgba(255,255,255,0.85);
  max-width: 680px;
}
.cookie-banner p a { color: #93b8f5; }
.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: rgba(255,255,255,0.7);
  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;
}

/* ARTICLE PAGE */
.article-hero {
  padding: var(--spacing-section) 0 var(--spacing-xl);
}
.article-hero .category-tag {
  font-size: 12px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-muted);
  margin-bottom: var(--spacing-md);
}
.article-hero h1 {
  font-size: 40px;
  font-weight: 400;
  line-height: 1.2;
  color: var(--color-ink);
  max-width: 720px;
  margin-bottom: var(--spacing-lg);
}
.article-hero .article-meta {
  font-size: 14px;
  color: var(--color-muted);
}
.article-hero img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  border-radius: var(--rounded-md);
  margin-top: var(--spacing-xl);
}
.article-body {
  max-width: 720px;
  padding: var(--spacing-xl) 0 var(--spacing-section);
}
.article-body h2 {
  font-size: 32px;
  font-weight: 400;
  color: var(--color-ink);
  margin: var(--spacing-xxl) 0 var(--spacing-md);
}
.article-body h3 {
  font-size: 24px;
  font-weight: 400;
  color: var(--color-ink);
  margin: var(--spacing-xl) 0 var(--spacing-md);
}
.article-body p {
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-body);
  margin-bottom: var(--spacing-md);
}
.article-body ul, .article-body ol {
  margin: 0 0 var(--spacing-md) var(--spacing-xl);
}
.article-body li {
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-body);
  margin-bottom: var(--spacing-xs);
}
.article-body a { color: var(--color-link); }
.article-body strong { color: var(--color-ink); }
.article-body figure {
  margin: var(--spacing-xl) 0;
}
.article-body figcaption {
  font-size: 13px;
  color: var(--color-muted);
  margin-top: var(--spacing-xs);
}

/* PAGE PROSE */
.prose-section {
  max-width: 720px;
  padding: var(--spacing-section) 0;
}
.prose-section h1 {
  font-size: 40px;
  font-weight: 400;
  line-height: 1.2;
  color: var(--color-ink);
  margin-bottom: var(--spacing-lg);
}
.prose-section h2 {
  font-size: 24px;
  font-weight: 400;
  color: var(--color-ink);
  margin: var(--spacing-xl) 0 var(--spacing-md);
}
.prose-section p {
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-body);
  margin-bottom: var(--spacing-md);
}
.prose-section ul {
  margin: 0 0 var(--spacing-md) var(--spacing-xl);
}
.prose-section li {
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-body);
  margin-bottom: var(--spacing-xs);
}
.prose-section a { color: var(--color-link); }

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

/* DISCLAIMER BAR */
.disclaimer-bar {
  background: var(--color-surface-soft);
  border-bottom: 1px solid var(--color-hairline);
  padding: var(--spacing-xs) 0;
  font-size: 13px;
  color: var(--color-muted);
  text-align: center;
}

/* RESPONSIVE */
@media (max-width: 1024px) {
  .container { padding: 0 var(--spacing-lg); }
  .top-nav .nav-inner { padding: 0 var(--spacing-lg); }
  .footer-grid { grid-template-columns: 1fr 1fr 1fr; }
  .demo-grid { grid-template-columns: repeat(2, 1fr); }
  .articles-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-tabbed { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .container { padding: 0 var(--spacing-md); }
  .top-nav .nav-inner { padding: 0 var(--spacing-md); }
  .nav-links { display: none; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 64px;
    left: 0; right: 0;
    background: var(--color-canvas);
    padding: var(--spacing-xl) var(--spacing-md);
    gap: var(--spacing-md);
    border-bottom: 1px solid var(--color-hairline);
    z-index: 99;
  }
  .nav-actions .btn-secondary { display: none; }
  .nav-hamburger { display: flex; }
  .hero-band { padding: var(--spacing-xxl) 0; }
  .hero-band h1 { font-size: 28px; }
  .hero-band p { font-size: 16px; }
  .demo-grid { grid-template-columns: 1fr; }
  .articles-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .signature-coral-card { padding: var(--spacing-xl); }
  .signature-coral-card h2 { font-size: 24px; }
  .hero-card-dark { padding: var(--spacing-xl); }
  .hero-card-dark h2 { font-size: 24px; }
  .article-hero h1 { font-size: 28px; }
  .cta-band-light h2 { font-size: 24px; }
  .cookie-banner { padding: var(--spacing-lg) var(--spacing-md); }
}