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

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

  --r-xs: 4px;
  --r-sm: 6px;
  --r-md: 8px;
  --r-lg: 12px;
  --r-xl: 16px;
  --r-pill: 9999px;

  --section-pad: 80px;
  --max-w: 1200px;
}

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

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;
  font-weight: 400;
  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: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

.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: 100%;
}

.nav-wordmark {
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.3px;
  line-height: 1;
}

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

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

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

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

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

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

.nav-mobile {
  display: none;
  background: var(--canvas);
  border-bottom: 1px solid var(--hairline);
  padding: 16px 24px;
}

.nav-mobile.open {
  display: block;
}

.nav-mobile ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.nav-mobile a {
  font-size: 15px;
  font-weight: 500;
  color: var(--ink);
}

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

.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);
  border-radius: var(--r-pill);
  padding: 4px 10px;
  margin-bottom: 24px;
}

.hero-band 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-band .hero-sub {
  font-size: 16px;
  font-weight: 400;
  line-height: 1.5;
  color: var(--body);
  max-width: 560px;
  margin-bottom: 40px;
}

.hero-image-wrap {
  margin-top: 56px;
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--hairline);
  background: var(--surface-card);
  max-height: 520px;
}

.hero-image-wrap img {
  width: 100%;
  height: 520px;
  object-fit: cover;
}

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

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

.section-sub {
  font-size: 16px;
  font-weight: 400;
  line-height: 1.5;
  color: var(--body);
  max-width: 600px;
  margin-bottom: 48px;
}

.divider {
  height: 1px;
  background: var(--hairline);
  border: none;
}

.article-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.article-card {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: var(--r-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: border-color 0.15s;
}

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

.article-card-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  background: var(--canvas-soft);
}

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

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

.article-card h3 {
  font-size: 22px;
  font-weight: 400;
  line-height: 1.3;
  letter-spacing: -0.11px;
  color: var(--ink);
  margin-bottom: 12px;
}

.article-card p {
  font-size: 14px;
  line-height: 1.5;
  color: var(--body);
  flex: 1;
  margin-bottom: 20px;
}

.article-card-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  align-self: flex-start;
}

.article-card-link::after {
  content: '→';
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

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

.feature-card-icon {
  font-size: 24px;
  margin-bottom: 16px;
  color: var(--primary);
}

.feature-card h3 {
  font-size: 18px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--ink);
  margin-bottom: 8px;
}

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

.page-hero {
  padding: 64px 0 48px;
  background: var(--canvas);
  border-bottom: 1px solid var(--hairline);
}

.page-hero h1 {
  font-size: 48px;
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: -1.2px;
  color: var(--ink);
  margin-bottom: 16px;
  max-width: 720px;
}

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

.page-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.page-meta .tag {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  color: var(--muted);
  background: var(--surface-strong);
  border-radius: var(--r-pill);
  padding: 4px 10px;
}

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

.article-body {
  padding: var(--section-pad) 0;
}

.article-content {
  max-width: 720px;
}

.article-content h2 {
  font-size: 26px;
  font-weight: 400;
  line-height: 1.25;
  letter-spacing: -0.325px;
  color: var(--ink);
  margin: 40px 0 16px;
}

.article-content h3 {
  font-size: 18px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--ink);
  margin: 28px 0 12px;
}

.article-content p {
  font-size: 16px;
  line-height: 1.5;
  color: var(--body);
  margin-bottom: 20px;
}

.article-content ul,
.article-content ol {
  margin: 0 0 20px 24px;
  color: var(--body);
  font-size: 16px;
  line-height: 1.6;
}

.article-content li {
  margin-bottom: 6px;
}

.article-content a {
  color: var(--primary);
  text-decoration: underline;
  text-decoration-color: rgba(245, 78, 0, 0.3);
}

.article-content a:hover {
  text-decoration-color: var(--primary);
}

.article-image {
  margin: 32px 0;
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--hairline);
}

.article-image img {
  width: 100%;
  height: 380px;
  object-fit: cover;
}

.article-image figcaption {
  padding: 12px 16px;
  font-size: 13px;
  color: var(--muted);
  background: var(--surface-card);
  border-top: 1px solid var(--hairline-soft);
}

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

.info-box h4 {
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 8px;
}

.info-box p, .info-box ul {
  font-size: 14px;
  color: var(--body);
  margin: 0;
}

.info-box ul {
  margin: 8px 0 0 16px;
}

.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;
  padding: 10px 16px;
  text-align: left;
  border-bottom: 1px solid var(--hairline);
}

.data-table td {
  padding: 10px 16px;
  color: var(--body);
  border-bottom: 1px solid var(--hairline-soft);
}

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

.sidebar {
  max-width: 280px;
  width: 100%;
}

.sidebar-card {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: var(--r-lg);
  padding: 24px;
  margin-bottom: 20px;
}

.sidebar-card h4 {
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.sidebar-card ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.sidebar-card li a {
  font-size: 14px;
  color: var(--body);
  line-height: 1.4;
}

.sidebar-card li a:hover {
  color: var(--primary);
}

.article-layout {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 48px;
  align-items: start;
}

.contact-section {
  padding: var(--section-pad) 0;
  background: var(--canvas);
}

.contact-form {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: var(--r-lg);
  padding: 40px;
  max-width: 560px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: var(--ink);
  margin-bottom: 6px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  background: var(--canvas-soft);
  border: 1px solid var(--hairline);
  border-radius: var(--r-md);
  padding: 12px 16px;
  font-size: 16px;
  font-family: inherit;
  color: var(--ink);
  outline: none;
  transition: border-color 0.15s;
  height: 44px;
}

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

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--hairline-strong);
}

.btn-primary {
  background: var(--primary);
  color: var(--on-primary);
  border: none;
  border-radius: var(--r-md);
  padding: 10px 18px;
  font-size: 14px;
  font-weight: 500;
  line-height: 1;
  height: 40px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: background 0.15s;
}

.btn-primary:hover {
  background: var(--primary-active);
}

.btn-primary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.form-message {
  margin-top: 12px;
  font-size: 14px;
  color: var(--success);
  display: none;
}

.form-message.visible {
  display: block;
}

.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;
  line-height: 1.2;
  letter-spacing: -0.72px;
  color: var(--ink);
  margin-bottom: 24px;
}

.cta-band p {
  font-size: 16px;
  line-height: 1.5;
  color: var(--body);
  margin-bottom: 32px;
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}

.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 1fr;
  gap: 32px;
  margin-bottom: 48px;
}

.footer-brand p {
  font-size: 14px;
  color: var(--body);
  line-height: 1.5;
  margin-top: 12px;
  max-width: 240px;
}

.footer-col h5 {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 16px;
}

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

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

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

.footer-bottom {
  border-top: 1px solid var(--hairline-soft);
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.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;
  max-width: 700px;
}

.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--ink);
  color: var(--canvas);
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  z-index: 999;
  flex-wrap: wrap;
}

.cookie-banner p {
  font-size: 14px;
  color: #d4d3cc;
  line-height: 1.5;
  flex: 1;
  min-width: 240px;
}

.cookie-banner p a {
  color: var(--canvas);
  text-decoration: underline;
}

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

.btn-cookie-accept {
  background: var(--primary);
  color: var(--on-primary);
  border: none;
  border-radius: var(--r-md);
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s;
}

.btn-cookie-accept:hover {
  background: var(--primary-active);
}

.btn-cookie-reject {
  background: transparent;
  color: #d4d3cc;
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: var(--r-md);
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: border-color 0.15s;
}

.btn-cookie-reject:hover {
  border-color: rgba(255,255,255,0.4);
}

.about-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}

.about-image {
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--hairline);
}

.about-image img {
  width: 100%;
  height: 400px;
  object-fit: cover;
}

.about-content h2 {
  font-size: 36px;
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: -0.72px;
  color: var(--ink);
  margin-bottom: 20px;
}

.about-content p {
  font-size: 16px;
  line-height: 1.5;
  color: var(--body);
  margin-bottom: 16px;
}

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

.prose-section h1 {
  font-size: 36px;
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: -0.72px;
  color: var(--ink);
  margin-bottom: 8px;
}

.prose-section .updated {
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 40px;
}

.prose-section h2 {
  font-size: 22px;
  font-weight: 400;
  line-height: 1.3;
  letter-spacing: -0.11px;
  color: var(--ink);
  margin: 36px 0 12px;
}

.prose-section h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
  margin: 24px 0 8px;
}

.prose-section p {
  font-size: 16px;
  line-height: 1.5;
  color: var(--body);
  margin-bottom: 16px;
  max-width: 720px;
}

.prose-section ul, .prose-section ol {
  margin: 0 0 16px 24px;
  font-size: 16px;
  line-height: 1.6;
  color: var(--body);
  max-width: 720px;
}

.prose-section li {
  margin-bottom: 6px;
}

.related-articles {
  padding: var(--section-pad) 0;
  border-top: 1px solid var(--hairline);
}

.related-articles h2 {
  font-size: 26px;
  font-weight: 400;
  letter-spacing: -0.325px;
  color: var(--ink);
  margin-bottom: 32px;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

@media (max-width: 1024px) {
  .article-grid {
    grid-template-columns: 1fr 1fr;
  }
  .feature-grid {
    grid-template-columns: 1fr 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr 1fr;
  }
  .article-layout {
    grid-template-columns: 1fr;
  }
  .sidebar {
    max-width: 100%;
  }
  .about-layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  .nav-hamburger {
    display: flex;
  }
  .hero-band h1 {
    font-size: 40px;
    letter-spacing: -1px;
  }
  .section-head {
    font-size: 28px;
  }
  .article-grid {
    grid-template-columns: 1fr;
  }
  .feature-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
  .related-grid {
    grid-template-columns: 1fr;
  }
  .page-hero h1 {
    font-size: 32px;
  }
  .contact-form {
    padding: 24px;
  }
  .about-image img {
    height: 260px;
  }
}

@media (max-width: 640px) {
  .hero-band h1 {
    font-size: 32px;
    letter-spacing: -0.8px;
  }
  .hero-image-wrap img {
    height: 280px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .cookie-banner {
    flex-direction: column;
    align-items: flex-start;
  }
  .cta-band h2 {
    font-size: 26px;
  }
  .prose-section h1 {
    font-size: 28px;
  }
}