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

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

:root {
  --primary: #f54e00;
  --primary-active: #d04200;
  --canvas: #f7f7f4;
  --canvas-soft: #fafaf7;
  --surface-card: #ffffff;
  --surface-strong: #e6e5e0;
  --hairline: #e6e5e0;
  --hairline-soft: #efeee8;
  --hairline-strong: #cfcdc4;
  --ink: #26251e;
  --body: #5a5852;
  --muted: #807d72;
  --muted-soft: #a09c92;
  --on-primary: #ffffff;
  --success: #1f8a65;
  --error: #cf2d56;
}

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

body {
  background: var(--canvas);
  color: var(--body);
  font-family: 'Inter', system-ui, 'Helvetica Neue', Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

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

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

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

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

.site-nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav-logo {
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.02em;
}

.nav-logo span { color: var(--primary); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--ink);
  line-height: 1.4;
  transition: color 0.15s;
}

.nav-links a:hover { color: var(--primary); }

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

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

/* HERO */
.hero {
  padding: 80px 0;
  background: var(--canvas);
}

.hero-label {
  display: inline-block;
  background: var(--surface-strong);
  color: var(--ink);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  border-radius: 9999px;
  padding: 4px 10px;
  margin-bottom: 24px;
}

.hero h1 {
  font-size: 72px;
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: -2.16px;
  color: var(--ink);
  max-width: 820px;
  margin-bottom: 24px;
}

.hero p {
  font-size: 16px;
  line-height: 1.5;
  color: var(--body);
  max-width: 560px;
  margin-bottom: 40px;
}

.hero-image-wrap {
  margin-top: 48px;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--hairline);
  background: var(--surface-card);
}

.hero-image-wrap img {
  width: 100%;
  height: 420px;
  object-fit: cover;
}

/* SECTIONS */
.section { padding: 80px 0; }
.section-alt { background: var(--canvas-soft); }

.section-label {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 16px;
}

.section-title {
  font-size: 36px;
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: -0.72px;
  color: var(--ink);
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 16px;
  line-height: 1.5;
  color: var(--body);
  max-width: 600px;
  margin-bottom: 48px;
}

/* CARDS GRID */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.card {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: 12px;
  padding: 24px;
  transition: border-color 0.15s;
}

.card:hover { border-color: var(--hairline-strong); }

.card-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 20px;
}

.card-tag {
  display: inline-block;
  background: var(--surface-strong);
  color: var(--muted);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  border-radius: 9999px;
  padding: 4px 10px;
  margin-bottom: 12px;
}

.card h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
  line-height: 1.4;
  margin-bottom: 10px;
}

.card p {
  font-size: 14px;
  line-height: 1.5;
  color: var(--body);
}

.card-link {
  display: inline-block;
  margin-top: 16px;
  font-size: 14px;
  font-weight: 500;
  color: var(--primary);
}

.card-link:hover { color: var(--primary-active); }

/* ARTICLE CARD (horizontal) */
.article-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }

.article-card {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: 12px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.article-card img {
  width: 100%;
  height: 180px;
  object-fit: cover;
}

.article-card-body {
  padding: 20px 24px 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.article-meta {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 10px;
}

.article-card h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
  line-height: 1.4;
  margin-bottom: 10px;
}

.article-card p {
  font-size: 14px;
  line-height: 1.5;
  color: var(--body);
  flex: 1;
}

.article-card a.read-link {
  display: inline-block;
  margin-top: 16px;
  font-size: 14px;
  font-weight: 500;
  color: var(--primary);
}

/* FEATURES LIST */
.features-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-item {
  padding: 24px;
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: 12px;
}

.feature-item h4 {
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 8px;
}

.feature-item p {
  font-size: 14px;
  line-height: 1.5;
  color: var(--body);
}

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

/* ARTICLE PAGE */
.article-header { padding: 60px 0 40px; }
.article-header .article-meta { margin-bottom: 16px; }
.article-header h1 {
  font-size: 48px;
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: -0.72px;
  color: var(--ink);
  margin-bottom: 20px;
  max-width: 800px;
}
.article-header .lead {
  font-size: 18px;
  line-height: 1.6;
  color: var(--body);
  max-width: 720px;
  margin-bottom: 32px;
}

.article-hero-img {
  width: 100%;
  height: 460px;
  object-fit: cover;
  border-radius: 12px;
  border: 1px solid var(--hairline);
}

.article-body { padding: 48px 0 80px; }

.article-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 48px;
  align-items: start;
}

.article-content h2 {
  font-size: 26px;
  font-weight: 400;
  letter-spacing: -0.325px;
  color: var(--ink);
  margin: 40px 0 16px;
}

.article-content h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--ink);
  margin: 28px 0 12px;
}

.article-content p {
  font-size: 16px;
  line-height: 1.7;
  color: var(--body);
  margin-bottom: 20px;
  letter-spacing: 0.08px;
}

.article-content ul, .article-content ol {
  margin: 0 0 20px 24px;
}

.article-content li {
  font-size: 16px;
  line-height: 1.7;
  color: var(--body);
  margin-bottom: 6px;
}

.article-content a {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.info-box {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-left: 3px solid var(--primary);
  border-radius: 8px;
  padding: 20px 24px;
  margin: 28px 0;
}

.info-box p {
  font-size: 15px;
  color: var(--body);
  margin: 0;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 14px;
}

.data-table th {
  background: var(--surface-strong);
  color: var(--ink);
  font-weight: 600;
  text-align: left;
  padding: 10px 14px;
  border-bottom: 1px solid var(--hairline);
}

.data-table td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--hairline-soft);
  color: var(--body);
}

.data-table tr:last-child td { border-bottom: none; }

.article-sidebar { position: sticky; top: 80px; }

.sidebar-widget {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: 12px;
  padding: 24px;
  margin-bottom: 24px;
}

.sidebar-widget h4 {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 16px;
}

.sidebar-widget ul { list-style: none; }
.sidebar-widget li { margin-bottom: 12px; }
.sidebar-widget li a {
  font-size: 14px;
  font-weight: 500;
  color: var(--ink);
}
.sidebar-widget li a:hover { color: var(--primary); }

.toc-list { list-style: none; counter-reset: toc; }
.toc-list li { counter-increment: toc; padding: 8px 0; border-bottom: 1px solid var(--hairline-soft); }
.toc-list li:last-child { border-bottom: none; }
.toc-list li a { font-size: 14px; color: var(--body); }
.toc-list li a:hover { color: var(--primary); }

/* CONTACT FORM */
.contact-section { padding: 80px 0; }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: start; }
.contact-info h2 { font-size: 36px; font-weight: 400; letter-spacing: -0.72px; color: var(--ink); margin-bottom: 16px; }
.contact-info p { font-size: 16px; line-height: 1.6; color: var(--body); margin-bottom: 24px; }

.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 14px; font-weight: 500; color: var(--ink); margin-bottom: 8px; }

.form-group input,
.form-group textarea {
  width: 100%;
  background: var(--surface-card);
  color: var(--ink);
  border: 1px solid var(--hairline-strong);
  border-radius: 8px;
  padding: 12px 16px;
  height: 44px;
  font-size: 16px;
  font-family: inherit;
  transition: border-color 0.15s;
}

.form-group textarea { height: 120px; resize: vertical; }
.form-group input:focus, .form-group textarea:focus { outline: none; border-color: var(--ink); }

.btn-primary {
  background: var(--primary);
  color: var(--on-primary);
  border: none;
  border-radius: 8px;
  padding: 10px 18px;
  height: 40px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.btn-primary:hover { background: var(--primary-active); }
.btn-primary:disabled { opacity: 0.6; cursor: not-allowed; }

.form-message {
  display: none;
  padding: 14px 16px;
  border-radius: 8px;
  font-size: 14px;
  margin-top: 16px;
}

.form-message.success {
  background: #edf7f3;
  border: 1px solid #9ed4bf;
  color: var(--success);
}

/* ABOUT / STATIC PAGES */
.page-header { padding: 60px 0 48px; }
.page-header h1 { font-size: 48px; font-weight: 400; letter-spacing: -0.72px; color: var(--ink); margin-bottom: 16px; }
.page-header p { font-size: 18px; color: var(--body); max-width: 640px; }

.page-content { padding: 0 0 80px; max-width: 780px; }
.page-content h2 { font-size: 26px; font-weight: 400; letter-spacing: -0.325px; color: var(--ink); margin: 40px 0 14px; }
.page-content h3 { font-size: 18px; font-weight: 600; color: var(--ink); margin: 24px 0 10px; }
.page-content p { font-size: 16px; line-height: 1.7; color: var(--body); margin-bottom: 18px; }
.page-content ul { margin: 0 0 18px 24px; }
.page-content li { font-size: 16px; line-height: 1.7; color: var(--body); margin-bottom: 6px; }

/* FOOTER */
.site-footer {
  background: var(--canvas);
  border-top: 1px solid var(--hairline);
  padding: 64px 0 48px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.6;
  color: var(--body);
  margin-top: 12px;
  max-width: 280px;
}

.footer-col h5 {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 16px;
}

.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 10px; }
.footer-col li a { font-size: 14px; color: var(--body); }
.footer-col li a:hover { color: var(--ink); }

.footer-bottom {
  padding-top: 32px;
  border-top: 1px solid var(--hairline);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-bottom p { font-size: 13px; color: var(--muted); }
.footer-disclaimer { font-size: 12px; color: var(--muted-soft); margin-top: 16px; line-height: 1.5; }

/* COOKIE BANNER */
#cookie-banner {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--ink);
  color: var(--canvas);
  border-radius: 12px;
  padding: 20px 28px;
  max-width: 640px;
  width: calc(100% - 48px);
  display: flex;
  align-items: center;
  gap: 20px;
  z-index: 1000;
  box-shadow: 0 4px 24px rgba(38,37,30,0.18);
}

#cookie-banner p { font-size: 14px; line-height: 1.5; color: #d4d2c8; flex: 1; }
#cookie-banner a { color: var(--canvas); text-decoration: underline; }

.cookie-buttons { display: flex; gap: 10px; flex-shrink: 0; }

.btn-cookie-accept {
  background: var(--primary);
  color: var(--on-primary);
  border: none;
  border-radius: 8px;
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
}

.btn-cookie-reject {
  background: transparent;
  color: #d4d2c8;
  border: 1px solid #4a4840;
  border-radius: 8px;
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
}

.btn-cookie-accept:hover { background: var(--primary-active); }
.btn-cookie-reject:hover { border-color: #807d72; }

/* BREADCRUMBS */
.breadcrumb {
  padding: 16px 0;
  font-size: 13px;
  color: var(--muted);
}
.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--ink); }
.breadcrumb span { margin: 0 6px; }

/* UPDATED DATE */
.updated-date {
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 32px;
}

/* CODE */
code {
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: 4px;
  padding: 2px 6px;
  color: var(--ink);
}

/* PAGINATION / RELATED */
.related-articles { padding: 48px 0 80px; }
.related-articles h2 { font-size: 26px; font-weight: 400; letter-spacing: -0.325px; color: var(--ink); margin-bottom: 32px; }

/* RESPONSIVE */
@media (max-width: 1024px) {
  .hero h1 { font-size: 56px; letter-spacing: -1.4px; }
  .article-layout { grid-template-columns: 1fr; }
  .article-sidebar { position: static; }
  .cards-grid { grid-template-columns: repeat(2, 1fr); }
  .article-cards { grid-template-columns: repeat(2, 1fr); }
  .features-list { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; gap: 40px; }
}

@media (max-width: 768px) {
  .nav-links { display: none; position: absolute; top: 64px; left: 0; right: 0; background: var(--canvas); border-bottom: 1px solid var(--hairline); flex-direction: column; padding: 16px 24px; gap: 16px; }
  .nav-links.open { display: flex; }
  .nav-toggle { display: flex; }
  .site-nav { position: relative; }
  .hero { padding: 48px 0; }
  .hero h1 { font-size: 36px; letter-spacing: -0.72px; }
  .section-title { font-size: 28px; }
  .article-header h1 { font-size: 32px; }
  .article-hero-img { height: 240px; }
  .cards-grid { grid-template-columns: 1fr; }
  .article-cards { grid-template-columns: 1fr; }
  .features-list { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
  #cookie-banner { flex-direction: column; align-items: flex-start; gap: 16px; }
  .cookie-buttons { width: 100%; }
  .page-header h1 { font-size: 32px; }
}

@media (max-width: 640px) {
  .hero h1 { font-size: 32px; }
  .hero-image-wrap img { height: 240px; }
}