@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 {
  --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;
  --success: #1f8a65;
  --error: #cf2d56;
  --rounded-xs: 4px;
  --rounded-sm: 6px;
  --rounded-md: 8px;
  --rounded-lg: 12px;
  --rounded-xl: 16px;
  --rounded-pill: 9999px;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', system-ui, 'Helvetica Neue', Helvetica, Arial, sans-serif;
  font-size: 16px;
  font-weight: 400;
  line-height: 1.5;
  color: var(--body);
  background-color: var(--canvas);
}

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;
}

/* ---- TYPOGRAPHY ---- */
h1 { font-size: 36px; font-weight: 400; line-height: 1.2; letter-spacing: -0.72px; color: var(--ink); }
h2 { font-size: 26px; font-weight: 400; line-height: 1.25; letter-spacing: -0.325px; color: var(--ink); }
h3 { font-size: 22px; font-weight: 400; line-height: 1.3; letter-spacing: -0.11px; color: var(--ink); }
h4 { font-size: 18px; font-weight: 600; line-height: 1.4; color: var(--ink); }
p { font-size: 16px; line-height: 1.5; color: var(--body); margin-bottom: 16px; }
p:last-child { margin-bottom: 0; }

code, pre {
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  line-height: 1.5;
}

/* ---- 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: 100%;
}

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

.nav-logo 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(--body);
  transition: color 0.15s;
}

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

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  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;
  border-bottom: 1px solid var(--hairline);
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.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(--rounded-pill);
  padding: 4px 10px;
  margin-bottom: 20px;
}

.hero h1 { margin-bottom: 20px; }
.hero p { font-size: 16px; color: var(--body); max-width: 480px; }

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

.hero-image img {
  width: 100%;
  height: 360px;
  object-fit: cover;
}

/* ---- SECTIONS ---- */
.section { padding: 80px 0; border-bottom: 1px solid var(--hairline-soft); }
.section:last-of-type { border-bottom: none; }

.section-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 12px;
}

.section-title { margin-bottom: 40px; }
.section-title h2 { margin-bottom: 8px; }
.section-title p { color: var(--muted); font-size: 16px; }

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

.article-card {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: var(--rounded-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;
}

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

.article-card-meta {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 8px;
}

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

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

.read-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--ink);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: color 0.15s;
}

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

.read-link::after { content: '→'; }

/* ---- INFO BANDS ---- */
.info-band {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: var(--rounded-lg);
  padding: 32px;
  margin-bottom: 24px;
}

.info-band h4 { margin-bottom: 12px; }

/* ---- FEATURE GRID ---- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

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

.feature-card h4 { margin-bottom: 8px; }
.feature-card p { font-size: 14px; margin-bottom: 0; }

/* ---- ARTICLE PAGE ---- */
.article-header { padding: 64px 0 48px; border-bottom: 1px solid var(--hairline); }
.article-header .breadcrumb { font-size: 13px; color: var(--muted); margin-bottom: 16px; }
.article-header .breadcrumb a { color: var(--muted); }
.article-header .breadcrumb a:hover { color: var(--ink); }
.article-header .article-meta { font-size: 13px; color: var(--muted); margin-top: 16px; }
.article-hero-img {
  width: 100%;
  max-height: 420px;
  object-fit: cover;
  border-radius: var(--rounded-lg);
  border: 1px solid var(--hairline);
  margin: 40px 0;
}

.article-body {
  max-width: 720px;
  margin: 0 auto;
  padding: 48px 0;
}

.article-body h2 { margin: 40px 0 16px; font-size: 24px; }
.article-body h3 { margin: 32px 0 12px; font-size: 20px; }
.article-body p { margin-bottom: 20px; }
.article-body ul, .article-body ol { margin: 0 0 20px 20px; }
.article-body li { margin-bottom: 8px; font-size: 16px; color: var(--body); }

.article-note {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-left: 3px solid var(--primary);
  border-radius: var(--rounded-sm);
  padding: 16px 20px;
  margin: 24px 0;
}

.article-note p { margin: 0; font-size: 14px; color: var(--muted); }

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

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

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

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

.article-source {
  font-size: 12px;
  color: var(--muted-soft);
  margin-top: 8px;
}

.article-source a { color: var(--muted); text-decoration: underline; }

/* ---- RELATED ARTICLES ---- */
.related-section { padding: 64px 0; border-top: 1px solid var(--hairline); }
.related-section h2 { margin-bottom: 32px; font-size: 22px; }
.related-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }

/* ---- FORM ---- */
.contact-form {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: var(--rounded-lg);
  padding: 40px;
  max-width: 600px;
}

.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(--surface-card);
  color: var(--ink);
  border: 1px solid var(--hairline-strong);
  border-radius: var(--rounded-md);
  padding: 12px 16px;
  height: 44px;
  font-size: 16px;
  font-family: inherit;
  transition: border-color 0.15s;
  outline: none;
}

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

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

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

.field-error {
  font-size: 12px;
  color: var(--error);
  margin-top: 4px;
  display: none;
}

.btn-primary {
  background: var(--primary);
  color: var(--on-primary);
  border: none;
  border-radius: var(--rounded-md);
  padding: 10px 18px;
  height: 40px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s;
  font-family: inherit;
}

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

.form-success {
  display: none;
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-left: 3px solid var(--success);
  border-radius: var(--rounded-sm);
  padding: 16px 20px;
  margin-top: 16px;
  font-size: 14px;
  color: var(--success);
}

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

/* ---- PAGE SECTIONS ---- */
.page-header {
  padding: 64px 0 48px;
  border-bottom: 1px solid var(--hairline);
}

.page-header h1 { margin-bottom: 12px; }
.page-header p { color: var(--muted); font-size: 16px; }
.page-updated { font-size: 13px; color: var(--muted-soft); margin-top: 12px; }

.page-body { padding: 48px 0; max-width: 800px; }
.page-body h2 { margin: 40px 0 14px; font-size: 22px; }
.page-body h3 { margin: 28px 0 10px; font-size: 18px; }
.page-body p { margin-bottom: 18px; }
.page-body ul, .page-body ol { margin: 0 0 18px 20px; }
.page-body li { margin-bottom: 6px; font-size: 16px; color: var(--body); }

/* ---- COOKIE BANNER ---- */
#cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--ink);
  color: var(--canvas);
  padding: 20px 24px;
  z-index: 999;
  display: none;
}

.cookie-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

.cookie-inner p {
  flex: 1;
  font-size: 14px;
  color: var(--canvas);
  margin: 0;
}

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

.cookie-actions { display: flex; gap: 12px; flex-shrink: 0; }

.btn-cookie-accept {
  background: var(--primary);
  color: var(--on-primary);
  border: none;
  border-radius: var(--rounded-md);
  padding: 10px 18px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  font-family: inherit;
}

.btn-cookie-reject {
  background: transparent;
  color: var(--canvas);
  border: 1px solid rgba(247,247,244,0.3);
  border-radius: var(--rounded-md);
  padding: 10px 18px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  font-family: inherit;
}

/* ---- 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;
  color: var(--body);
  margin-top: 12px;
  max-width: 260px;
}

.footer-col h4 {
  font-size: 13px;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: 0.5px;
  margin-bottom: 16px;
}

.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { font-size: 14px; color: var(--body); }
.footer-col ul li 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); margin: 0; }
.footer-disclaimer { font-size: 12px; color: var(--muted-soft); margin-top: 8px; max-width: 800px; }

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

/* ---- RESPONSIVE ---- */
@media (max-width: 1024px) {
  .article-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}

@media (max-width: 768px) {
  h1 { font-size: 28px; }
  h2 { font-size: 22px; }

  .hero { padding: 48px 0; }
  .hero-inner { grid-template-columns: 1fr; gap: 32px; }
  .hero-image { display: none; }
  .hero p { max-width: 100%; }

  .section { padding: 48px 0; }

  .nav-links { display: none; flex-direction: column; position: absolute; top: 64px; left: 0; right: 0; background: var(--canvas); border-bottom: 1px solid var(--hairline); padding: 20px 24px; gap: 16px; }
  .nav-links.open { display: flex; }
  .nav-toggle { display: flex; }

  .article-grid { grid-template-columns: 1fr; }
  .feature-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .related-grid { grid-template-columns: 1fr; }

  .contact-form { padding: 24px; }
  .article-body { padding: 32px 0; }
  .page-body { padding: 32px 0; }
}

@media (max-width: 640px) {
  .container { padding: 0 16px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}