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

:root {
  --ink: #181d26;
  --body: #333840;
  --muted: #41454d;
  --canvas: #ffffff;
  --surface-soft: #f8fafc;
  --surface-strong: #e0e2e6;
  --surface-dark: #181d26;
  --surface-dark-elevated: #1d1f25;
  --hairline: #dddddd;
  --link: #1b61c9;
  --link-active: #1a3866;
  --coral: #aa2d00;
  --forest: #0a2e0e;
  --cream: #f5e9d4;
  --peach: #fcab79;
  --mint: #a8d8c4;
  --yellow: #f4d35e;
  --on-primary: #ffffff;
  --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;
  --max-width: 1280px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Fira Sans", "Droid Sans", "Helvetica Neue", sans-serif;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  font-size: 14px;
  font-weight: 400;
  line-height: 1.6;
  color: var(--body);
  background: var(--canvas);
}

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

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

address { font-style: normal; }

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--canvas);
  border-bottom: 1px solid var(--hairline);
  height: 64px;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.site-logo {
  font-size: 20px;
  font-weight: 500;
  color: var(--ink);
  letter-spacing: -0.3px;
}

.site-logo span { color: var(--link); }

.main-nav ul {
  display: flex;
  gap: var(--spacing-xl);
  list-style: none;
}

.main-nav a {
  font-size: 14px;
  font-weight: 400;
  color: var(--body);
}

.main-nav a:hover { color: var(--ink); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
  transition: transform 0.2s, opacity 0.2s;
}

.btn-primary {
  display: inline-block;
  background: var(--ink);
  color: var(--on-primary);
  font-size: 16px;
  font-weight: 500;
  padding: 16px 24px;
  border-radius: var(--rounded-lg);
  border: none;
  cursor: pointer;
  line-height: 1.4;
  transition: background 0.15s;
}

.btn-primary:hover { background: #0d1218; color: var(--on-primary); }

.btn-secondary {
  display: inline-block;
  background: var(--canvas);
  color: var(--ink);
  font-size: 16px;
  font-weight: 500;
  padding: 16px 24px;
  border-radius: var(--rounded-lg);
  border: 1px solid var(--hairline);
  cursor: pointer;
  line-height: 1.4;
  transition: border-color 0.15s;
}

.btn-secondary:hover { border-color: var(--ink); color: var(--ink); }

.btn-legal {
  display: inline-block;
  background: var(--link);
  color: var(--on-primary);
  font-size: 13.12px;
  font-weight: 600;
  padding: 12px 10px;
  border-radius: var(--rounded-xs);
  border: none;
  cursor: pointer;
  line-height: 1.2;
}

.hero-band {
  padding: var(--spacing-section) 0;
  background: var(--canvas);
}

.hero-inner {
  max-width: 640px;
}

.hero-band h1 {
  font-size: 40px;
  font-weight: 400;
  line-height: 1.2;
  color: var(--ink);
  margin-bottom: var(--spacing-lg);
}

.hero-band p {
  font-size: 14px;
  color: var(--body);
  margin-bottom: var(--spacing-xl);
  max-width: 520px;
}

.hero-buttons {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

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

.section-label {
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.16px;
  color: var(--muted);
  text-transform: uppercase;
  margin-bottom: var(--spacing-sm);
}

.section-title {
  font-size: 32px;
  font-weight: 400;
  line-height: 1.2;
  color: var(--ink);
  margin-bottom: var(--spacing-md);
}

.section-body {
  font-size: 14px;
  color: var(--body);
  max-width: 560px;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xxl);
}

.card {
  background: var(--canvas);
  border-radius: var(--rounded-md);
  padding: var(--spacing-md);
  border: 1px solid var(--hairline);
}

.card img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  border-radius: var(--rounded-sm);
  margin-bottom: var(--spacing-md);
}

.card-tag {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: var(--spacing-xs);
}

.card h3 {
  font-size: 18px;
  font-weight: 500;
  line-height: 1.4;
  color: var(--ink);
  margin-bottom: var(--spacing-xs);
}

.card p {
  font-size: 14px;
  color: var(--body);
  margin-bottom: var(--spacing-md);
}

.card-meta {
  font-size: 13px;
  color: var(--muted);
}

.card a.card-link {
  color: var(--link);
  font-weight: 500;
}

.signature-coral {
  background: var(--coral);
  color: var(--on-primary);
  border-radius: var(--rounded-lg);
  padding: var(--spacing-xxl);
  margin: 0 0 var(--spacing-lg);
}

.signature-coral h2 {
  font-size: 32px;
  font-weight: 400;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
  color: var(--on-primary);
}

.signature-coral p {
  font-size: 14px;
  margin-bottom: var(--spacing-xl);
  opacity: 0.9;
}

.signature-forest {
  background: var(--forest);
  color: var(--on-primary);
  border-radius: var(--rounded-lg);
  padding: var(--spacing-xxl);
}

.signature-forest h2 {
  font-size: 32px;
  font-weight: 400;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
  color: var(--on-primary);
}

.signature-forest p {
  font-size: 14px;
  opacity: 0.9;
  margin-bottom: var(--spacing-xl);
}

.two-col-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xxl);
}

.cream-band {
  background: var(--cream);
  padding: var(--spacing-section) 0;
}

.cream-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xxl);
  align-items: center;
}

.cream-inner h2 {
  font-size: 32px;
  font-weight: 400;
  color: var(--ink);
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
}

.cream-inner p {
  font-size: 14px;
  color: var(--body);
  margin-bottom: var(--spacing-xl);
}

.cream-inner img {
  border-radius: var(--rounded-md);
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
}

.dark-cta-band {
  background: var(--surface-dark);
  padding: var(--spacing-section) 0;
}

.dark-cta-inner {
  max-width: 640px;
  margin: 0 auto;
  text-align: center;
}

.dark-cta-inner h2 {
  font-size: 32px;
  font-weight: 400;
  color: var(--on-primary);
  margin-bottom: var(--spacing-md);
  line-height: 1.2;
}

.dark-cta-inner p {
  font-size: 14px;
  color: rgba(255,255,255,0.75);
  margin-bottom: var(--spacing-xl);
}

.cta-light-band {
  background: var(--surface-strong);
  padding: var(--spacing-section) 0;
  text-align: center;
}

.cta-light-band h2 {
  font-size: 32px;
  font-weight: 400;
  color: var(--ink);
  margin-bottom: var(--spacing-md);
}

.cta-light-band p {
  font-size: 14px;
  color: var(--body);
  margin-bottom: var(--spacing-xl);
}

.demo-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xxl);
}

.demo-card {
  border-radius: var(--rounded-md);
  padding: var(--spacing-md);
}

.demo-card h3 {
  font-size: 16px;
  font-weight: 500;
  color: var(--ink);
  margin-bottom: var(--spacing-xs);
}

.demo-card p {
  font-size: 14px;
  color: var(--body);
}

.demo-card img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  border-radius: var(--rounded-sm);
  margin-bottom: var(--spacing-md);
}

.demo-card-peach { background: var(--peach); }
.demo-card-mint  { background: var(--mint);  }
.demo-card-yellow{ background: var(--yellow);}

.page-hero {
  background: var(--surface-dark-elevated);
  padding: var(--spacing-section) 0;
  color: var(--on-primary);
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to right,
    rgba(170,45,0,0.35) 0%, rgba(170,45,0,0.35) 8%,
    rgba(10,46,14,0.35) 8%, rgba(10,46,14,0.35) 20%,
    rgba(27,97,201,0.25) 20%, rgba(27,97,201,0.25) 33%,
    rgba(244,211,94,0.2) 33%, rgba(244,211,94,0.2) 48%,
    rgba(168,216,196,0.2) 48%, rgba(168,216,196,0.2) 64%,
    transparent 64%
  );
  pointer-events: none;
}

.page-hero-inner {
  position: relative;
  max-width: 640px;
}

.page-hero h1 {
  font-size: 48px;
  font-weight: 500;
  line-height: 1.1;
  margin-bottom: var(--spacing-lg);
}

.page-hero p {
  font-size: 14px;
  opacity: 0.85;
}

.content-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: var(--spacing-xxl);
  padding: var(--spacing-section) 0;
}

.topic-rail {
  border-right: 1px solid var(--hairline);
  padding-right: var(--spacing-lg);
}

.topic-rail-heading {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: var(--spacing-md);
}

.topic-rail ul {
  list-style: none;
}

.topic-rail li {
  margin-bottom: var(--spacing-xs);
}

.topic-rail a {
  font-size: 14px;
  color: var(--body);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 6px 0;
}

.topic-rail a.active,
.topic-rail a:hover { color: var(--ink); }

.topic-count {
  font-size: 12px;
  background: var(--surface-soft);
  color: var(--muted);
  border-radius: 99px;
  padding: 2px 8px;
}

.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
}

.article-page-content {
  padding: var(--spacing-section) 0;
}

.article-page-content .container {
  max-width: 760px;
}

.article-page-content h1 {
  font-size: 40px;
  font-weight: 400;
  color: var(--ink);
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
}

.article-meta {
  font-size: 13px;
  color: var(--muted);
  margin-bottom: var(--spacing-xxl);
  padding-bottom: var(--spacing-md);
  border-bottom: 1px solid var(--hairline);
}

.article-page-content h2 {
  font-size: 24px;
  font-weight: 400;
  color: var(--ink);
  margin: var(--spacing-xl) 0 var(--spacing-md);
  line-height: 1.35;
}

.article-page-content h3 {
  font-size: 20px;
  font-weight: 400;
  color: var(--ink);
  margin: var(--spacing-lg) 0 var(--spacing-sm);
}

.article-page-content p {
  font-size: 14px;
  color: var(--body);
  margin-bottom: var(--spacing-md);
  line-height: 1.7;
}

.article-page-content ul,
.article-page-content ol {
  padding-left: var(--spacing-xl);
  margin-bottom: var(--spacing-md);
}

.article-page-content li {
  font-size: 14px;
  color: var(--body);
  margin-bottom: var(--spacing-xs);
  line-height: 1.7;
}

.article-page-content a {
  color: var(--link);
}

.article-feature-img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  border-radius: var(--rounded-md);
  margin-bottom: var(--spacing-xxl);
}

.inline-callout {
  background: var(--cream);
  border-radius: var(--rounded-md);
  padding: var(--spacing-lg) var(--spacing-xl);
  margin: var(--spacing-xl) 0;
}

.inline-callout p {
  margin: 0;
  font-size: 14px;
}

.page-content {
  padding: var(--spacing-section) 0;
  max-width: 760px;
  margin: 0 auto;
}

.page-content h1 {
  font-size: 40px;
  font-weight: 400;
  color: var(--ink);
  margin-bottom: var(--spacing-lg);
}

.page-content h2 {
  font-size: 24px;
  font-weight: 400;
  color: var(--ink);
  margin: var(--spacing-xl) 0 var(--spacing-md);
}

.page-content p {
  font-size: 14px;
  color: var(--body);
  margin-bottom: var(--spacing-md);
  line-height: 1.7;
}

.page-content ul {
  padding-left: var(--spacing-xl);
  margin-bottom: var(--spacing-md);
}

.page-content li {
  font-size: 14px;
  color: var(--body);
  margin-bottom: var(--spacing-xs);
  line-height: 1.7;
}

.page-content .page-updated {
  font-size: 13px;
  color: var(--muted);
  margin-bottom: var(--spacing-xxl);
}

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

.contact-form-section h2 {
  font-size: 32px;
  font-weight: 400;
  color: var(--ink);
  margin-bottom: var(--spacing-md);
}

.contact-form-section p {
  font-size: 14px;
  color: var(--body);
  margin-bottom: var(--spacing-xl);
}

.contact-form {
  display: grid;
  gap: var(--spacing-md);
  max-width: 520px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.form-group label {
  font-size: 14px;
  font-weight: 500;
  color: var(--ink);
}

.form-group input,
.form-group textarea {
  background: var(--canvas);
  border: 1px solid var(--hairline);
  border-radius: var(--rounded-sm);
  padding: 12px 16px;
  height: 44px;
  font-size: 14px;
  font-family: var(--font);
  color: var(--ink);
  width: 100%;
  transition: border-color 0.15s;
}

.form-group textarea {
  height: 120px;
  resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: #458fff;
}

.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 9999;
  background: var(--surface-dark);
  color: var(--on-primary);
  padding: var(--spacing-md) var(--spacing-xxl);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-xl);
  border-top: 1px solid rgba(255,255,255,0.1);
}

.cookie-banner p {
  font-size: 13px;
  opacity: 0.85;
  max-width: 640px;
}

.cookie-banner p a { color: rgba(255,255,255,0.7); text-decoration: underline; }

.cookie-actions {
  display: flex;
  gap: var(--spacing-sm);
  flex-shrink: 0;
}

.site-footer {
  background: var(--canvas);
  border-top: 1px solid var(--hairline);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 2fr;
  gap: var(--spacing-xxl);
  padding: var(--spacing-section) var(--spacing-xxl);
}

.footer-brand {
  font-size: 18px;
  font-weight: 500;
  color: var(--ink);
  margin-bottom: var(--spacing-sm);
}

.footer-brand span { color: var(--link); }

.footer-tagline {
  font-size: 13px;
  color: var(--muted);
  max-width: 260px;
}

.footer-heading {
  font-size: 14px;
  font-weight: 500;
  color: var(--ink);
  margin-bottom: var(--spacing-md);
}

.footer-col ul {
  list-style: none;
}

.footer-col li {
  margin-bottom: var(--spacing-xs);
}

.footer-col a {
  font-size: 14px;
  color: var(--muted);
}

.footer-col a:hover { color: var(--ink); }

.footer-col address p {
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 4px;
}

.footer-col address a { color: var(--muted); }
.footer-col address a:hover { color: var(--ink); }

.footer-bottom {
  border-top: 1px solid var(--hairline);
  padding: var(--spacing-lg) 0;
}

.footer-bottom-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-lg);
}

.footer-bottom p {
  font-size: 13px;
  color: var(--muted);
}

.footer-disclaimer {
  max-width: 480px;
  text-align: right;
}

.articles-index-header {
  padding: var(--spacing-section) 0 var(--spacing-xl);
}

.articles-index-header h1 {
  font-size: 40px;
  font-weight: 400;
  color: var(--ink);
  margin-bottom: var(--spacing-sm);
}

.articles-index-header p {
  font-size: 14px;
  color: var(--body);
  max-width: 520px;
}

@media (max-width: 1024px) {
  .card-grid, .demo-grid { grid-template-columns: repeat(2, 1fr); }
  .cream-inner { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .content-layout { grid-template-columns: 1fr; }
  .topic-rail { border-right: none; border-bottom: 1px solid var(--hairline); padding: 0 0 var(--spacing-lg); }
  .articles-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-bottom-inner { flex-direction: column; align-items: flex-start; }
  .footer-disclaimer { text-align: left; }
}

@media (max-width: 768px) {
  .container { padding: 0 var(--spacing-md); }
  .hero-band h1 { font-size: 28px; }
  .section-title { font-size: 24px; }
  .card-grid, .demo-grid, .articles-grid { grid-template-columns: 1fr; }
  .two-col-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; padding: var(--spacing-xxl) var(--spacing-md); }
  .page-hero h1 { font-size: 32px; }
  .article-page-content h1 { font-size: 28px; }
  .page-content h1 { font-size: 28px; }
  .main-nav {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--canvas);
    border-bottom: 1px solid var(--hairline);
    padding: var(--spacing-lg) var(--spacing-md);
    z-index: 99;
  }
  .main-nav.open { display: block; }
  .main-nav ul { flex-direction: column; gap: var(--spacing-md); }
  .nav-toggle { display: flex; }
  .cookie-banner { flex-direction: column; align-items: flex-start; padding: var(--spacing-md); }
  .signature-coral, .signature-forest { padding: var(--spacing-xl); }
  .signature-coral h2, .signature-forest h2 { font-size: 24px; }
  .cream-band .cream-inner { grid-template-columns: 1fr; }
}