@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;
  --on-primary: #ffffff;
  --ink: #26251e;
  --body: #5a5852;
  --body-strong: #26251e;
  --muted: #807d72;
  --muted-soft: #a09c92;
  --hairline: #e6e5e0;
  --hairline-soft: #efeee8;
  --hairline-strong: #cfcdc4;
  --semantic-success: #1f8a65;
  --semantic-error: #cf2d56;
}

html { scroll-behavior: smooth; }

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

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

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

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

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

.header-inner {
  display: flex;
  align-items: center;
  height: 64px;
  gap: 40px;
}

.site-logo {
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.11px;
  flex-shrink: 0;
}

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

.site-nav {
  display: flex;
  gap: 28px;
  align-items: center;
  flex: 1;
}

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

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

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  margin-left: auto;
}

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

.hero-band {
  padding: 80px 0;
  background: var(--canvas);
  border-bottom: 1px solid var(--hairline-soft);
}

.hero-band h1 {
  font-size: 56px;
  font-weight: 400;
  color: var(--ink);
  line-height: 1.1;
  letter-spacing: -1.5px;
  max-width: 720px;
  margin-bottom: 20px;
}

.hero-band .hero-sub {
  font-size: 16px;
  color: var(--body);
  max-width: 560px;
  margin-bottom: 32px;
  line-height: 1.5;
}

.hero-image {
  margin-top: 48px;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--hairline);
  max-height: 480px;
  object-fit: cover;
  width: 100%;
}

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

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

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

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

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

.card-grid-2 { grid-template-columns: repeat(2, 1fr); }

.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-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 16px;
}

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

.card h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 10px;
  line-height: 1.35;
}

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

.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 a.card-title-link {
  color: var(--ink);
  font-size: 20px;
  font-weight: 600;
  display: block;
  margin-bottom: 8px;
  line-height: 1.3;
}

.article-card a.card-title-link:hover { color: var(--primary); }

.badge-pill {
  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: 12px;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  background: var(--primary);
  color: var(--on-primary);
  font-size: 14px;
  font-weight: 500;
  padding: 10px 18px;
  height: 40px;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  transition: background 0.15s;
  line-height: 1;
}

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

.btn-secondary {
  display: inline-flex;
  align-items: center;
  background: var(--surface-card);
  color: var(--ink);
  font-size: 14px;
  font-weight: 500;
  padding: 10px 18px;
  height: 40px;
  border-radius: 8px;
  border: 1px solid var(--hairline-strong);
  cursor: pointer;
  transition: border-color 0.15s;
  line-height: 1;
}

.btn-secondary:hover { border-color: var(--ink); }

.article-hero { padding: 60px 0 40px; }

.article-hero .badge-pill { margin-bottom: 16px; }

.article-hero h1 {
  font-size: 42px;
  font-weight: 400;
  color: var(--ink);
  line-height: 1.15;
  letter-spacing: -0.72px;
  max-width: 760px;
  margin-bottom: 16px;
}

.article-meta {
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 32px;
}

.article-hero-img {
  width: 100%;
  max-height: 420px;
  object-fit: cover;
  border-radius: 12px;
  border: 1px solid var(--hairline);
}

.article-body {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 60px;
  padding: 60px 0 80px;
  align-items: start;
}

.article-content h2 {
  font-size: 26px;
  font-weight: 400;
  color: var(--ink);
  letter-spacing: -0.325px;
  margin: 40px 0 14px;
  line-height: 1.25;
}

.article-content h2:first-child { margin-top: 0; }

.article-content h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
  margin: 28px 0 10px;
}

.article-content p {
  font-size: 16px;
  color: var(--body);
  line-height: 1.65;
  margin-bottom: 18px;
}

.article-content ul, .article-content ol {
  margin: 0 0 18px 20px;
  color: var(--body);
  font-size: 16px;
  line-height: 1.65;
}

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

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

.info-box {
  background: var(--canvas-soft);
  border: 1px solid var(--hairline);
  border-left: 3px solid var(--primary);
  border-radius: 8px;
  padding: 20px 24px;
  margin: 28px 0;
  font-size: 15px;
  color: var(--body);
  line-height: 1.6;
}

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

.sidebar-card {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: 12px;
  padding: 24px;
  margin-bottom: 20px;
}

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

.sidebar-card a {
  display: block;
  font-size: 14px;
  color: var(--body);
  margin-bottom: 10px;
  line-height: 1.4;
}

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

.related-articles { padding: 60px 0; border-top: 1px solid var(--hairline-soft); }

.related-articles .section-title { font-size: 26px; margin-bottom: 32px; letter-spacing: -0.325px; }

.contact-section { padding: 80px 0; }

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}

.contact-form-wrap { }

.contact-info h3 { font-size: 22px; font-weight: 400; color: var(--ink); letter-spacing: -0.11px; margin-bottom: 14px; }
.contact-info p { font-size: 15px; color: var(--body); line-height: 1.6; margin-bottom: 16px; }

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

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 6px;
  letter-spacing: 0.3px;
}

.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;
  font-size: 15px;
  font-family: inherit;
  transition: border-color 0.15s;
  appearance: none;
}

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

.form-group textarea { min-height: 110px; resize: vertical; }

.form-message {
  display: none;
  margin-top: 14px;
  padding: 12px 16px;
  border-radius: 8px;
  font-size: 14px;
}

.form-message.success { background: #e6f4ef; color: var(--semantic-success); border: 1px solid #b3ddd0; }
.form-message.error { background: #fdedf1; color: var(--semantic-error); border: 1px solid #f5bcc9; }

.page-hero { padding: 60px 0 40px; border-bottom: 1px solid var(--hairline-soft); }

.page-hero h1 {
  font-size: 42px;
  font-weight: 400;
  color: var(--ink);
  letter-spacing: -0.72px;
  line-height: 1.15;
  margin-bottom: 14px;
}

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

.page-content { padding: 60px 0 80px; max-width: 760px; }

.page-content h2 { font-size: 26px; font-weight: 400; color: var(--ink); letter-spacing: -0.325px; margin: 36px 0 12px; }
.page-content h2:first-child { margin-top: 0; }
.page-content h3 { font-size: 18px; font-weight: 600; color: var(--ink); margin: 24px 0 8px; }
.page-content p { font-size: 16px; color: var(--body); line-height: 1.65; margin-bottom: 16px; }
.page-content ul, .page-content ol { margin: 0 0 16px 20px; color: var(--body); font-size: 16px; line-height: 1.65; }
.page-content li { margin-bottom: 6px; }
.page-content a { color: var(--primary); }
.page-content a:hover { color: var(--primary-active); }

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

.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 48px;
}

.footer-brand {
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
  display: block;
  margin-bottom: 10px;
}

.footer-col p {
  font-size: 14px;
  color: var(--body);
  line-height: 1.5;
  margin-top: 4px;
}

.footer-col strong {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 12px;
  letter-spacing: 0.3px;
}

.footer-col a {
  display: block;
  font-size: 14px;
  color: var(--body);
  margin-bottom: 8px;
}

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

.footer-bottom {
  border-top: 1px solid var(--hairline-soft);
  padding: 20px 0;
}

.footer-bottom p { font-size: 13px; color: var(--muted); }
.footer-bottom a { color: var(--muted); }
.footer-bottom a:hover { color: var(--ink); }

.cookie-banner {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--ink);
  color: var(--canvas);
  z-index: 9999;
  padding: 16px 0;
}

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

.cookie-inner p { font-size: 14px; color: var(--canvas-soft); flex: 1; line-height: 1.5; }
.cookie-inner a { color: var(--primary); }

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

.cookie-actions .btn-primary { height: 36px; padding: 8px 16px; }
.cookie-actions .btn-secondary { height: 36px; padding: 8px 16px; background: transparent; color: var(--canvas); border-color: rgba(255,255,255,0.3); }
.cookie-actions .btn-secondary:hover { border-color: rgba(255,255,255,0.7); }

.divider { border: none; border-top: 1px solid var(--hairline-soft); margin: 40px 0; }

.update-note { font-size: 13px; color: var(--muted); margin-top: 48px; padding-top: 16px; border-top: 1px solid var(--hairline-soft); }

@media (max-width: 1024px) {
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .article-body { grid-template-columns: 1fr; }
  .article-sidebar { position: static; }
  .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .site-nav { display: none; flex-direction: column; gap: 0; position: absolute; top: 64px; left: 0; right: 0; background: var(--canvas); border-bottom: 1px solid var(--hairline); padding: 12px 24px 20px; }
  .site-nav.open { display: flex; }
  .site-nav a { padding: 10px 0; border-bottom: 1px solid var(--hairline-soft); font-size: 15px; }
  .hero-band h1 { font-size: 36px; letter-spacing: -1px; }
  .section-title { font-size: 26px; }
  .card-grid, .card-grid-2 { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; }
  .article-hero h1 { font-size: 30px; }
  .page-hero h1 { font-size: 32px; }
}

@media (max-width: 480px) {
  .hero-band { padding: 48px 0; }
  .section { padding: 48px 0; }
  .hero-band h1 { font-size: 30px; }
}