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

:root {
  --primary: #0066cc;
  --primary-focus: #0071e3;
  --primary-dark: #2997ff;
  --ink: #1d1d1f;
  --body: #1d1d1f;
  --muted: #6e6e73;
  --hairline: #e0e0e0;
  --hairline-soft: #f0f0f0;
  --canvas: #ffffff;
  --parchment: #f5f5f7;
  --surface-dark: #272729;
  --surface-dark2: #2a2a2c;
  --surface-black: #000000;
  --on-dark: #ffffff;
  --on-primary: #ffffff;
  --radius-sm: 8px;
  --radius-md: 11px;
  --radius-lg: 18px;
  --radius-pill: 9999px;
  --font: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --nav-h: 64px;
  --shadow-product: rgba(0,0,0,0.22) 3px 5px 30px 0;
}

html { font-size: 17px; scroll-behavior: smooth; }
body {
  font-family: var(--font);
  color: var(--body);
  background: var(--canvas);
  line-height: 1.47;
  letter-spacing: -0.374px;
  -webkit-font-smoothing: antialiased;
}

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

.container { max-width: 980px; margin: 0 auto; padding: 0 24px; }
.container-wide { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* SITE HEADER */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--surface-black);
  height: var(--nav-h);
  display: flex;
  align-items: center;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}
.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--on-dark);
}
.brand-logo-icon {
  width: 30px;
  height: 30px;
  background: var(--primary);
  border-radius: 7px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.brand-logo-icon svg { display: block; }
.brand-name {
  font-size: 16px;
  font-weight: 600;
  color: var(--on-dark);
  letter-spacing: -0.2px;
  line-height: 1.2;
}
.brand-tagline {
  font-size: 11px;
  font-weight: 400;
  color: rgba(255,255,255,0.55);
  letter-spacing: 0;
  margin-top: 2px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 2px;
}
.site-nav a {
  padding: 6px 10px;
  font-size: 12px;
  font-weight: 400;
  color: rgba(255,255,255,0.85);
  letter-spacing: -0.12px;
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: color 0.15s;
}
.site-nav a:hover { color: var(--on-dark); text-decoration: none; }
.site-nav a.active { color: var(--on-dark); }

.burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  width: 40px;
  height: 40px;
}
.burger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--on-dark);
  transition: all 0.2s;
}

/* MOBILE NAV */
.mobile-nav {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 200;
  background: var(--surface-black);
  flex-direction: column;
  padding: 20px 24px 40px;
  overflow-y: auto;
}
.mobile-nav.open { display: flex; }
.mobile-nav-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 32px;
}
.mobile-nav-close {
  background: none;
  border: none;
  font-size: 28px;
  line-height: 1;
  cursor: pointer;
  color: var(--on-dark);
  padding: 4px;
}
.mobile-nav a {
  font-size: 22px;
  font-weight: 400;
  color: var(--on-dark);
  padding: 14px 0;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  text-decoration: none;
  letter-spacing: -0.3px;
}
.mobile-nav a:hover { color: var(--primary-dark); text-decoration: none; }

/* HERO — dark tile */
.hero-tile {
  background: var(--surface-dark);
  padding: 80px 0 72px;
  text-align: center;
}
.hero-kicker {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.5px;
  color: var(--primary-dark);
  text-transform: uppercase;
  margin-bottom: 20px;
}
.hero-tile h1 {
  font-size: clamp(32px, 5vw, 56px);
  font-weight: 600;
  color: var(--on-dark);
  line-height: 1.07;
  letter-spacing: -0.28px;
  max-width: 740px;
  margin: 0 auto 20px;
}
.hero-lead {
  font-size: clamp(18px, 2.5vw, 24px);
  font-weight: 300;
  color: rgba(255,255,255,0.75);
  max-width: 560px;
  margin: 0 auto 36px;
  line-height: 1.5;
  letter-spacing: 0;
}
.hero-cta-group {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  background: var(--primary);
  color: var(--on-primary);
  padding: 11px 22px;
  border-radius: var(--radius-pill);
  font-size: 17px;
  font-weight: 400;
  letter-spacing: -0.374px;
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.1s;
}
.btn-primary:hover { text-decoration: none; }
.btn-primary:active { transform: scale(0.95); }

.btn-ghost {
  display: inline-flex;
  align-items: center;
  background: transparent;
  color: var(--primary-dark);
  padding: 11px 22px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--primary-dark);
  font-size: 17px;
  font-weight: 400;
  letter-spacing: -0.374px;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.1s;
}
.btn-ghost:hover { text-decoration: none; color: var(--on-dark); border-color: var(--on-dark); }
.btn-ghost:active { transform: scale(0.95); }

/* SECTION TILES */
.tile-light {
  background: var(--canvas);
  padding: 80px 0;
}
.tile-parchment {
  background: var(--parchment);
  padding: 80px 0;
}
.tile-dark {
  background: var(--surface-dark);
  padding: 80px 0;
}
.tile-dark2 {
  background: var(--surface-dark2);
  padding: 80px 0;
}

.section-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--muted);
  letter-spacing: 0.3px;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.section-label-dark {
  font-size: 14px;
  font-weight: 600;
  color: rgba(255,255,255,0.5);
  letter-spacing: 0.3px;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.section-title {
  font-size: clamp(28px, 3.5vw, 40px);
  font-weight: 600;
  color: var(--ink);
  line-height: 1.1;
  letter-spacing: 0;
  margin-bottom: 12px;
}
.section-title-dark {
  font-size: clamp(28px, 3.5vw, 40px);
  font-weight: 600;
  color: var(--on-dark);
  line-height: 1.1;
  letter-spacing: 0;
  margin-bottom: 12px;
}
.section-lead {
  font-size: 21px;
  font-weight: 400;
  color: var(--muted);
  line-height: 1.19;
  letter-spacing: 0.231px;
  margin-bottom: 40px;
  max-width: 600px;
}
.section-lead-dark {
  font-size: 21px;
  font-weight: 400;
  color: rgba(255,255,255,0.65);
  line-height: 1.19;
  letter-spacing: 0.231px;
  margin-bottom: 40px;
  max-width: 600px;
}

/* FEATURED ARTICLE */
.featured-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}
.featured-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4/3;
  background: var(--parchment);
}
.featured-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  box-shadow: var(--shadow-product);
}
.featured-content {}
.featured-category {
  font-size: 12px;
  font-weight: 600;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 12px;
}
.featured-title {
  font-size: clamp(22px, 2.5vw, 34px);
  font-weight: 600;
  color: var(--ink);
  line-height: 1.18;
  letter-spacing: -0.374px;
  margin-bottom: 16px;
}
.featured-excerpt {
  font-size: 17px;
  color: var(--muted);
  line-height: 1.47;
  letter-spacing: -0.374px;
  margin-bottom: 28px;
}
.featured-meta {
  font-size: 14px;
  color: var(--muted);
  letter-spacing: -0.224px;
  margin-bottom: 24px;
}

/* CARDS GRID */
.cards-grid {
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}
.card {
  background: var(--canvas);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.card-image {
  width: 100%;
  aspect-ratio: 16/9;
  background: var(--parchment);
  overflow: hidden;
}
.card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.card-body { padding: 20px 24px 24px; }
.card-category {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.3px;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 8px;
}
.card-title {
  font-size: 17px;
  font-weight: 600;
  color: var(--ink);
  line-height: 1.24;
  letter-spacing: -0.374px;
  margin-bottom: 8px;
}
.card-title a { color: inherit; text-decoration: none; }
.card-title a:hover { color: var(--primary); text-decoration: none; }
.card-excerpt {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.43;
  letter-spacing: -0.224px;
}
.card-meta {
  font-size: 12px;
  color: var(--muted);
  letter-spacing: -0.12px;
  margin-top: 12px;
}

/* GALLERY */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}
.gallery-item {
  border-radius: var(--radius-sm);
  overflow: hidden;
  aspect-ratio: 4/3;
  background: var(--parchment);
}
.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.gallery-caption {
  font-size: 12px;
  color: rgba(255,255,255,0.5);
  margin-top: 8px;
  letter-spacing: -0.12px;
  text-align: center;
}

/* ARTICLE */
.article-header {
  padding: 48px 0 36px;
}
.breadcrumb {
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
  letter-spacing: -0.224px;
}
.breadcrumb a { color: var(--muted); text-decoration: none; }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb-sep { color: var(--hairline); }
.article-badge {
  display: inline-block;
  background: var(--primary);
  color: var(--on-primary);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.3px;
  text-transform: uppercase;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  margin-bottom: 16px;
}
.article-title {
  font-size: clamp(24px, 4vw, 44px);
  font-weight: 600;
  color: var(--ink);
  line-height: 1.1;
  letter-spacing: -0.28px;
  margin-bottom: 20px;
  max-width: 820px;
}
.article-meta {
  font-size: 14px;
  color: var(--muted);
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  letter-spacing: -0.224px;
  border-top: 1px solid var(--hairline-soft);
  padding-top: 20px;
}
.article-meta strong { color: var(--ink); }

.article-layout {
  display: grid;
  gap: 56px;
  grid-template-columns: 1fr 280px;
  align-items: start;
  padding: 40px 0 80px;
}
.article-sidebar {
  position: sticky;
  top: calc(var(--nav-h) + 24px);
}
.sidebar-block {
  background: var(--parchment);
  border-radius: var(--radius-lg);
  padding: 20px 24px;
  margin-bottom: 20px;
}
.sidebar-block h4 {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.3px;
  color: var(--muted);
  margin-bottom: 12px;
}
.sidebar-block a {
  display: block;
  font-size: 14px;
  color: var(--primary);
  margin-bottom: 8px;
  letter-spacing: -0.224px;
  text-decoration: none;
}
.sidebar-block a:hover { text-decoration: underline; }
.sidebar-block p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.43;
  letter-spacing: -0.224px;
}

.article-summary {
  background: var(--parchment);
  border-left: 3px solid var(--primary);
  padding: 20px 24px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin-bottom: 32px;
  font-size: 17px;
  font-style: italic;
  color: var(--body);
  line-height: 1.47;
  letter-spacing: -0.374px;
}
.article-toc {
  background: var(--parchment);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-bottom: 32px;
}
.article-toc h3 {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.3px;
  color: var(--muted);
  margin-bottom: 14px;
}
.article-toc ol { padding-left: 18px; }
.article-toc li { font-size: 14px; line-height: 1.6; color: var(--primary); margin-bottom: 4px; letter-spacing: -0.224px; }
.article-toc a { color: var(--primary); text-decoration: none; }
.article-toc a:hover { text-decoration: underline; }

.article-body { font-size: 17px; line-height: 1.47; color: var(--body); letter-spacing: -0.374px; }
.article-body h2 {
  font-size: 28px;
  font-weight: 600;
  color: var(--ink);
  line-height: 1.14;
  letter-spacing: 0;
  margin: 44px 0 16px;
}
.article-body h3 {
  font-size: 21px;
  font-weight: 600;
  color: var(--ink);
  line-height: 1.19;
  letter-spacing: 0.231px;
  margin: 32px 0 12px;
}
.article-body p { margin-bottom: 20px; }
.article-body ul, .article-body ol { padding-left: 24px; margin-bottom: 20px; }
.article-body li { margin-bottom: 8px; }

.key-context-box {
  border: 1px solid var(--hairline);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin: 32px 0;
  background: var(--parchment);
}
.key-context-box h3 {
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.3px;
  margin-bottom: 14px;
}
.key-context-box ul { padding-left: 20px; }
.key-context-box li { font-size: 15px; color: var(--body); margin-bottom: 8px; line-height: 1.5; letter-spacing: -0.224px; }

.article-image-wrap { margin: 36px 0; }
.article-image-wrap img {
  width: 100%;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-product);
}
.article-image-caption {
  font-size: 12px;
  color: var(--muted);
  margin-top: 10px;
  letter-spacing: -0.12px;
  line-height: 1.43;
}

.not-covered-box {
  background: var(--parchment);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin: 36px 0;
}
.not-covered-box h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 14px;
  letter-spacing: -0.374px;
}
.not-covered-box ul { padding-left: 20px; }
.not-covered-box li { font-size: 15px; color: var(--muted); margin-bottom: 6px; letter-spacing: -0.224px; }

.related-articles {
  margin-top: 48px;
  padding-top: 36px;
  border-top: 1px solid var(--hairline-soft);
}
.related-articles h3 {
  font-size: 21px;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: 0.231px;
  margin-bottom: 24px;
}

/* STATIC PAGES */
.static-header {
  padding: 56px 0 36px;
  border-bottom: 1px solid var(--hairline-soft);
}
.static-header .breadcrumb { margin-bottom: 16px; }
.static-header h1 {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 600;
  color: var(--ink);
  line-height: 1.1;
  letter-spacing: -0.28px;
}
.static-content {
  padding: 44px 0 80px;
  max-width: 720px;
}
.static-content h2 {
  font-size: 24px;
  font-weight: 600;
  color: var(--ink);
  margin: 36px 0 12px;
  letter-spacing: -0.374px;
}
.static-content p {
  font-size: 17px;
  line-height: 1.47;
  color: var(--body);
  letter-spacing: -0.374px;
  margin-bottom: 16px;
}
.static-content ul { padding-left: 24px; margin-bottom: 16px; }
.static-content li { font-size: 17px; line-height: 1.47; color: var(--body); letter-spacing: -0.374px; margin-bottom: 8px; }
.static-content a { color: var(--primary); }

/* FORMS */
.form-wrap { max-width: 560px; }
.form-group { margin-bottom: 20px; }
label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 6px;
  letter-spacing: -0.224px;
}
input[type=text], input[type=email], select, textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--hairline);
  border-radius: var(--radius-sm);
  font-size: 17px;
  font-family: var(--font);
  color: var(--ink);
  letter-spacing: -0.374px;
  background: var(--canvas);
  transition: border-color 0.15s;
}
input:focus, select:focus, textarea:focus {
  outline: 2px solid var(--primary-focus);
  outline-offset: 1px;
  border-color: var(--primary-focus);
}
textarea { resize: vertical; min-height: 120px; }
.form-submit {
  background: var(--primary);
  color: var(--on-primary);
  padding: 12px 28px;
  border: none;
  border-radius: var(--radius-pill);
  font-size: 17px;
  font-weight: 400;
  letter-spacing: -0.374px;
  cursor: pointer;
  font-family: var(--font);
  transition: transform 0.1s;
}
.form-submit:hover { opacity: 0.9; }
.form-submit:active { transform: scale(0.95); }
.form-msg {
  display: none;
  background: var(--parchment);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-lg);
  padding: 20px 24px;
  margin-top: 20px;
  font-size: 17px;
  color: var(--ink);
  letter-spacing: -0.374px;
}

/* FOOTER */
.site-footer {
  background: var(--parchment);
  padding: 64px 0 32px;
  border-top: 1px solid var(--hairline-soft);
}
.footer-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-bottom: 40px;
}
.footer-col h5 {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.3px;
  color: var(--ink);
  margin-bottom: 14px;
}
.footer-col a {
  display: block;
  font-size: 14px;
  color: #333333;
  line-height: 2.41;
  letter-spacing: -0.224px;
  text-decoration: none;
}
.footer-col a:hover { color: var(--primary); text-decoration: none; }
.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid var(--hairline);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}
.footer-copyright { font-size: 12px; color: #7a7a7a; letter-spacing: -0.12px; }
.footer-note { font-size: 12px; color: #7a7a7a; letter-spacing: -0.12px; }
.footer-note a { color: inherit; text-decoration: underline; }

/* COOKIE BANNER */
.cookie-banner {
  position: fixed;
  bottom: 24px;
  left: 24px;
  right: 24px;
  z-index: 300;
  max-width: 460px;
  background: var(--ink);
  color: var(--on-dark);
  border-radius: var(--radius-lg);
  padding: 20px 24px;
  box-shadow: 0 8px 40px rgba(0,0,0,0.25);
}
.cookie-banner p {
  font-size: 14px;
  line-height: 1.5;
  margin-bottom: 16px;
  color: #cccccc;
  letter-spacing: -0.224px;
}
.cookie-banner-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.cookie-btn {
  padding: 8px 18px;
  border-radius: var(--radius-pill);
  font-size: 14px;
  font-weight: 400;
  cursor: pointer;
  border: none;
  font-family: var(--font);
  letter-spacing: -0.224px;
  transition: opacity 0.15s;
}
.cookie-btn-accept { background: var(--primary); color: var(--on-primary); }
.cookie-btn-reject { background: rgba(255,255,255,0.15); color: #fff; }
.cookie-btn-settings { background: transparent; color: #aaaaaa; text-decoration: underline; font-weight: 400; padding: 8px 0; }
.cookie-btn:hover { opacity: 0.85; }

/* UTILITY */
.text-primary { color: var(--primary); }
.text-muted { color: var(--muted); }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mt-4 { margin-top: 32px; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }

/* RESPONSIVE */
@media (max-width: 900px) {
  .featured-wrap { grid-template-columns: 1fr; gap: 32px; }
  .article-layout { grid-template-columns: 1fr; gap: 0; }
  .article-sidebar { position: static; margin-top: 48px; border-top: 1px solid var(--hairline-soft); padding-top: 32px; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  html { font-size: 16px; }
  .site-nav { display: none; }
  .burger { display: flex; }
  .hero-tile { padding: 56px 0 52px; }
  .tile-light, .tile-parchment, .tile-dark, .tile-dark2 { padding: 48px 0; }
  .footer-grid { grid-template-columns: 1fr; }
  .gallery-grid { grid-template-columns: 1fr; }
  .static-header { padding: 36px 0 24px; }
  .article-header { padding: 32px 0 24px; }
  .cards-grid { grid-template-columns: 1fr; }
}