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

:root {
  --canvas: #f7f7f4;
  --canvas-soft: #fafaf7;
  --surface-card: #ffffff;
  --surface-strong: #e6e5e0;
  --primary: #f54e00;
  --primary-active: #d04200;
  --ink: #26251e;
  --body: #5a5852;
  --body-strong: #26251e;
  --muted: #807d72;
  --muted-soft: #a09c92;
  --on-primary: #ffffff;
  --hairline: #e6e5e0;
  --hairline-soft: #efeee8;
  --hairline-strong: #cfcdc4;
  --semantic-success: #1f8a65;
  --semantic-error: #cf2d56;
  --rounded-xs: 4px;
  --rounded-sm: 6px;
  --rounded-md: 8px;
  --rounded-lg: 12px;
  --rounded-xl: 16px;
  --rounded-pill: 9999px;
  --spacing-xxs: 4px;
  --spacing-xs: 8px;
  --spacing-sm: 12px;
  --spacing-base: 16px;
  --spacing-md: 20px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-xxl: 48px;
  --spacing-section: 80px;
  --font-sans: 'Inter', system-ui, 'Helvetica Neue', Helvetica, Arial, sans-serif;
  --font-mono: 'JetBrains Mono', 'Courier New', monospace;
  --max-width: 1200px;
}

html { scroll-behavior: smooth; }

body {
  background-color: var(--canvas);
  color: var(--body);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.5;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--ink);
  text-decoration: none;
}
a:hover { color: var(--primary); }

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

h1, h2, h3, h4, h5, h6 {
  color: var(--ink);
  font-weight: 400;
  line-height: 1.2;
}

h1 { font-size: 36px; letter-spacing: -0.72px; }
h2 { font-size: 26px; letter-spacing: -0.325px; }
h3 { font-size: 22px; letter-spacing: -0.11px; }
h4 { font-size: 16px; font-weight: 600; letter-spacing: 0; line-height: 1.4; }

p { color: var(--body); line-height: 1.5; }

ul, ol { padding-left: var(--spacing-base); }
li { margin-bottom: var(--spacing-xxs); }

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

.site-nav {
  background: var(--canvas);
  border-bottom: 1px solid var(--hairline);
  height: 64px;
  position: sticky;
  top: 0;
  z-index: 100;
}
.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-xl);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-xl);
}
.nav-logo {
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.11px;
  flex-shrink: 0;
}
.nav-logo:hover { color: var(--primary); }
.nav-menu {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  gap: var(--spacing-xl);
}
.nav-menu li { margin: 0; }
.nav-menu a {
  font-size: 14px;
  font-weight: 500;
  color: var(--body);
  line-height: 1.4;
  transition: color 0.15s;
}
.nav-menu a:hover { color: var(--primary); }
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 24px;
  height: 18px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}
.nav-toggle span {
  display: block;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
  transition: all 0.2s;
}

.hero-band {
  padding: var(--spacing-section) 0;
  background: var(--canvas);
  border-bottom: 1px solid var(--hairline);
}
.hero-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-xl);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-section);
  align-items: center;
}
.hero-text {}
.hero-label {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  color: var(--muted);
  background: var(--surface-strong);
  padding: 4px 10px;
  border-radius: var(--rounded-pill);
  margin-bottom: var(--spacing-lg);
}
.hero-text h1 {
  font-size: 36px;
  font-weight: 400;
  letter-spacing: -0.72px;
  color: var(--ink);
  margin-bottom: var(--spacing-lg);
  line-height: 1.2;
}
.hero-text p {
  font-size: 16px;
  color: var(--body);
  line-height: 1.5;
  margin-bottom: var(--spacing-xl);
  max-width: 480px;
}
.hero-image {
  border-radius: var(--rounded-lg);
  overflow: hidden;
  border: 1px solid var(--hairline);
  aspect-ratio: 4/3;
}
.hero-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 500;
  line-height: 1;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: background-color 0.15s, color 0.15s;
  border-radius: var(--rounded-md);
}
.btn-primary {
  background: var(--primary);
  color: var(--on-primary);
  padding: 10px 18px;
  height: 40px;
}
.btn-primary:hover {
  background: var(--primary-active);
  color: var(--on-primary);
}
.btn-secondary {
  background: var(--surface-card);
  color: var(--ink);
  padding: 10px 18px;
  height: 40px;
  border: 1px solid var(--hairline-strong);
}
.btn-secondary:hover {
  background: var(--surface-strong);
  color: var(--ink);
}
.btn-download {
  background: var(--ink);
  color: var(--canvas);
  padding: 12px 20px;
  height: 44px;
}
.btn-download:hover {
  background: #3d3b30;
  color: var(--canvas);
}

.section {
  padding: var(--spacing-section) 0;
}
.section-label {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: var(--spacing-lg);
}
.section-heading {
  font-size: 26px;
  font-weight: 400;
  letter-spacing: -0.325px;
  color: var(--ink);
  margin-bottom: var(--spacing-lg);
}
.section-subheading {
  font-size: 16px;
  color: var(--body);
  max-width: 640px;
  line-height: 1.5;
  margin-bottom: var(--spacing-xxl);
}

.card {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: var(--rounded-lg);
  overflow: hidden;
}
.card-body { padding: var(--spacing-lg); }
.card-img {
  width: 100%;
  aspect-ratio: 16/9;
  overflow: hidden;
}
.card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}
.card:hover .card-img img { transform: scale(1.03); }
.card-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: var(--spacing-xs);
}
.card-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
  line-height: 1.4;
  margin-bottom: var(--spacing-xs);
}
.card-title a { color: inherit; }
.card-title a:hover { color: var(--primary); }
.card-excerpt {
  font-size: 14px;
  color: var(--body);
  line-height: 1.5;
  margin-bottom: var(--spacing-base);
}
.card-meta {
  font-size: 13px;
  color: var(--muted);
}

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

.feature-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-base);
  margin-top: var(--spacing-xxl);
}
.feature-item {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: var(--rounded-lg);
  padding: var(--spacing-lg);
}
.feature-item h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: var(--spacing-xs);
}
.feature-item p {
  font-size: 14px;
  color: var(--body);
  line-height: 1.5;
}

.divider {
  border: none;
  border-top: 1px solid var(--hairline);
  margin: 0;
}

.article-header {
  padding: var(--spacing-xxl) 0 var(--spacing-xl);
  border-bottom: 1px solid var(--hairline);
  background: var(--canvas);
}
.article-header .article-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: var(--spacing-base);
}
.article-header h1 {
  font-size: 36px;
  font-weight: 400;
  letter-spacing: -0.72px;
  color: var(--ink);
  max-width: 760px;
  margin-bottom: var(--spacing-base);
}
.article-meta {
  font-size: 13px;
  color: var(--muted);
  display: flex;
  gap: var(--spacing-base);
  flex-wrap: wrap;
}

.article-body {
  display: grid;
  grid-template-columns: minmax(0, 760px) 280px;
  gap: var(--spacing-section);
  padding: var(--spacing-xxl) 0;
  align-items: start;
}
.article-content { }
.article-content h2 {
  font-size: 26px;
  font-weight: 400;
  letter-spacing: -0.325px;
  color: var(--ink);
  margin: var(--spacing-xxl) 0 var(--spacing-base);
}
.article-content h2:first-child { margin-top: 0; }
.article-content h3 {
  font-size: 20px;
  font-weight: 400;
  color: var(--ink);
  margin: var(--spacing-xl) 0 var(--spacing-sm);
}
.article-content p {
  font-size: 16px;
  color: var(--body);
  line-height: 1.6;
  margin-bottom: var(--spacing-base);
}
.article-content ul, .article-content ol {
  color: var(--body);
  font-size: 16px;
  line-height: 1.6;
  margin-bottom: var(--spacing-base);
  padding-left: var(--spacing-xl);
}
.article-content li { margin-bottom: var(--spacing-xs); }
.article-content a { color: var(--primary); text-decoration: underline; text-underline-offset: 2px; }
.article-content a:hover { color: var(--primary-active); }
.article-figure {
  margin: var(--spacing-xl) 0;
  border: 1px solid var(--hairline);
  border-radius: var(--rounded-lg);
  overflow: hidden;
}
.article-figure img {
  width: 100%;
  max-height: 480px;
  object-fit: cover;
}
.article-figure figcaption {
  padding: var(--spacing-sm) var(--spacing-base);
  font-size: 13px;
  color: var(--muted);
  background: var(--canvas-soft);
  border-top: 1px solid var(--hairline);
}
.article-sidebar { position: sticky; top: 80px; }
.sidebar-block {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: var(--rounded-lg);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-base);
}
.sidebar-block h4 {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: var(--spacing-base);
}
.sidebar-block ul { list-style: none; padding: 0; }
.sidebar-block li { margin-bottom: var(--spacing-xs); border-bottom: 1px solid var(--hairline-soft); padding-bottom: var(--spacing-xs); }
.sidebar-block li:last-child { border-bottom: none; padding-bottom: 0; margin-bottom: 0; }
.sidebar-block a { font-size: 14px; color: var(--body); line-height: 1.4; }
.sidebar-block a:hover { color: var(--primary); }

.info-box {
  background: var(--canvas-soft);
  border: 1px solid var(--hairline);
  border-left: 3px solid var(--ink);
  border-radius: var(--rounded-sm);
  padding: var(--spacing-base) var(--spacing-lg);
  margin: var(--spacing-xl) 0;
  font-size: 15px;
  color: var(--body);
  line-height: 1.5;
}

.sources-box {
  background: var(--canvas-soft);
  border: 1px solid var(--hairline);
  border-radius: var(--rounded-lg);
  padding: var(--spacing-lg);
  margin-top: var(--spacing-xxl);
}
.sources-box h4 {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: var(--spacing-base);
}
.sources-box ol { padding-left: var(--spacing-base); }
.sources-box li { font-size: 13px; color: var(--body); margin-bottom: var(--spacing-xs); }
.sources-box a { color: var(--primary); text-decoration: underline; }

.page-header {
  padding: var(--spacing-xxl) 0;
  border-bottom: 1px solid var(--hairline);
}
.page-header h1 {
  font-size: 36px;
  font-weight: 400;
  letter-spacing: -0.72px;
  color: var(--ink);
  margin-bottom: var(--spacing-base);
}
.page-header p { font-size: 16px; color: var(--body); max-width: 640px; }

.page-content {
  padding: var(--spacing-xxl) 0;
  max-width: 760px;
}
.page-content h2 {
  font-size: 22px;
  font-weight: 400;
  color: var(--ink);
  margin: var(--spacing-xxl) 0 var(--spacing-base);
}
.page-content h2:first-child { margin-top: 0; }
.page-content p { color: var(--body); font-size: 16px; line-height: 1.6; margin-bottom: var(--spacing-base); }
.page-content ul { color: var(--body); font-size: 16px; line-height: 1.6; margin-bottom: var(--spacing-base); }
.page-content a { color: var(--primary); text-decoration: underline; text-underline-offset: 2px; }

.contact-form-section {
  padding: var(--spacing-section) 0;
  background: var(--canvas);
  border-top: 1px solid var(--hairline);
}
.contact-form-inner {
  max-width: 600px;
}
.form-heading {
  font-size: 26px;
  font-weight: 400;
  letter-spacing: -0.325px;
  color: var(--ink);
  margin-bottom: var(--spacing-xs);
}
.form-sub {
  font-size: 16px;
  color: var(--body);
  margin-bottom: var(--spacing-xxl);
}
.form-group {
  margin-bottom: var(--spacing-base);
}
.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: var(--ink);
  margin-bottom: var(--spacing-xxs);
}
.form-group input,
.form-group textarea {
  width: 100%;
  background: var(--surface-card);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.5;
  border: 1px solid var(--hairline-strong);
  border-radius: var(--rounded-md);
  padding: 12px 16px;
  height: 44px;
  outline: none;
  transition: border-color 0.15s;
}
.form-group textarea {
  height: auto;
  min-height: 120px;
  resize: vertical;
}
.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--ink);
}
.form-group input.invalid,
.form-group textarea.invalid {
  border-color: var(--semantic-error);
}
.form-error {
  font-size: 13px;
  color: var(--semantic-error);
  margin-top: var(--spacing-xxs);
  display: none;
}
.form-error.visible { display: block; }
.form-message {
  display: none;
  background: var(--canvas-soft);
  border: 1px solid var(--hairline);
  border-radius: var(--rounded-md);
  padding: var(--spacing-base) var(--spacing-lg);
  font-size: 15px;
  color: var(--body);
  margin-top: var(--spacing-base);
}
.form-message.visible { display: block; }
.btn-loading { opacity: 0.6; pointer-events: none; }

.cta-band {
  padding: 96px 0;
  background: var(--canvas);
  border-top: 1px solid var(--hairline);
  text-align: center;
}
.cta-band h2 {
  font-size: 36px;
  font-weight: 400;
  letter-spacing: -0.72px;
  color: var(--ink);
  margin-bottom: var(--spacing-base);
}
.cta-band p { font-size: 16px; color: var(--body); margin-bottom: var(--spacing-xl); }
.cta-links { display: flex; gap: var(--spacing-base); justify-content: center; flex-wrap: wrap; }

.site-footer {
  background: var(--canvas);
  border-top: 1px solid var(--hairline);
  padding: 64px 0 48px;
}
.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-xl);
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}
.footer-logo {
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
  display: block;
  margin-bottom: var(--spacing-base);
}
.footer-logo:hover { color: var(--primary); }
.footer-tagline { font-size: 14px; color: var(--body); line-height: 1.5; margin-bottom: var(--spacing-xs); }
.footer-updated { font-size: 13px; color: var(--muted); }
.footer-col h4 {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: var(--spacing-base);
}
.footer-col ul { list-style: none; padding: 0; }
.footer-col li { margin-bottom: var(--spacing-xs); }
.footer-col a { font-size: 14px; color: var(--body); }
.footer-col a:hover { color: var(--primary); }
.footer-bottom {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--spacing-xl) var(--spacing-xl) 0;
  border-top: 1px solid var(--hairline);
  font-size: 13px;
  color: var(--muted);
}
.footer-bottom p { margin-bottom: var(--spacing-xs); }
.footer-bottom a { color: var(--muted); text-decoration: underline; text-underline-offset: 2px; }
.footer-disclaimer { font-size: 12px; color: var(--muted-soft); }

.cookie-banner {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--ink);
  color: var(--canvas);
  z-index: 1000;
  padding: var(--spacing-base) var(--spacing-xl);
}
.cookie-banner.visible { display: block; }
.cookie-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-xl);
  flex-wrap: wrap;
}
.cookie-inner p { font-size: 14px; color: var(--canvas-soft); }
.cookie-inner a { color: var(--canvas); text-decoration: underline; }
.cookie-actions { display: flex; gap: var(--spacing-xs); flex-shrink: 0; }
.cookie-actions .btn-primary { background: var(--primary); }
.cookie-actions .btn-secondary { background: transparent; color: var(--canvas); border-color: rgba(255,255,255,0.3); }
.cookie-actions .btn-secondary:hover { background: rgba(255,255,255,0.1); color: var(--canvas); }

.breadcrumb {
  font-size: 13px;
  color: var(--muted);
  margin-bottom: var(--spacing-base);
  display: flex;
  gap: var(--spacing-xs);
  align-items: center;
  flex-wrap: wrap;
}
.breadcrumb a { color: var(--muted); text-decoration: underline; text-underline-offset: 2px; }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb span { color: var(--muted-soft); }

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xxl);
  align-items: start;
  margin-top: var(--spacing-xxl);
}
.about-image {
  border-radius: var(--rounded-lg);
  overflow: hidden;
  border: 1px solid var(--hairline);
}
.about-image img {
  width: 100%;
  height: 360px;
  object-fit: cover;
}

@media (max-width: 1024px) {
  .articles-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-list { grid-template-columns: repeat(2, 1fr); }
  .footer-inner { grid-template-columns: 1fr 1fr; gap: var(--spacing-xxl) var(--spacing-xl); }
  .article-body { grid-template-columns: 1fr; }
  .article-sidebar { position: static; }
  .hero-inner { grid-template-columns: 1fr; }
  .about-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .container { padding: 0 var(--spacing-base); }
  .nav-inner { padding: 0 var(--spacing-base); }
  .nav-menu {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--canvas);
    border-bottom: 1px solid var(--hairline);
    flex-direction: column;
    padding: var(--spacing-base);
    gap: 0;
  }
  .nav-menu.open { display: flex; }
  .nav-menu a { padding: var(--spacing-sm) 0; display: block; border-bottom: 1px solid var(--hairline-soft); }
  .nav-menu li:last-child a { border-bottom: none; }
  .nav-toggle { display: flex; }
  .hero-band { padding: var(--spacing-xxl) 0; }
  .hero-inner { padding: 0 var(--spacing-base); gap: var(--spacing-xl); }
  .hero-text h1 { font-size: 28px; }
  .section { padding: var(--spacing-xxl) 0; }
  .articles-grid { grid-template-columns: 1fr; }
  .feature-list { grid-template-columns: 1fr; }
  .footer-inner { padding: 0 var(--spacing-base); grid-template-columns: 1fr; gap: var(--spacing-xl); }
  .footer-bottom { padding: var(--spacing-base) var(--spacing-base) 0; }
  h1 { font-size: 28px; }
  h2 { font-size: 22px; }
  .article-header h1 { font-size: 26px; }
  .cta-band { padding: var(--spacing-xxl) var(--spacing-base); }
  .cta-band h2 { font-size: 26px; }
  .cookie-inner { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 640px) {
  .hero-image { aspect-ratio: 16/9; }
  .article-meta { flex-direction: column; gap: var(--spacing-xxs); }
  .footer-inner { grid-template-columns: 1fr 1fr; }
}