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

html { font-size: 16px; scroll-behavior: smooth; }
body { background: var(--canvas); color: var(--body); font-family: 'Inter', system-ui, 'Helvetica Neue', Arial, sans-serif; line-height: 1.5; }
a { color: var(--ink); text-decoration: none; }
a:hover { color: var(--primary); }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }

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

/* NAV */
.site-nav { background: var(--canvas); border-bottom: 1px solid var(--hairline); position: sticky; top: 0; z-index: 100; height: 64px; display: flex; align-items: center; }
.nav-inner { max-width: 1200px; margin: 0 auto; padding: 0 24px; width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.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; gap: 8px; align-items: center; }
.nav-links a { font-size: 14px; font-weight: 500; color: var(--body); padding: 6px 10px; border-radius: var(--r-md); transition: color 0.15s, background 0.15s; }
.nav-links a:hover, .nav-links a.active { color: var(--ink); background: var(--surface-strong); }
.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 6px; border-radius: var(--r-md); }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--ink); border-radius: 2px; transition: transform 0.2s; }

/* HERO */
.hero { padding: 80px 0 64px; }
.hero-inner { max-width: 1200px; margin: 0 auto; padding: 0 24px; display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.hero-badge { display: inline-flex; align-items: center; background: var(--surface-strong); color: var(--ink); font-size: 11px; font-weight: 600; letter-spacing: 0.88px; text-transform: uppercase; padding: 4px 10px; border-radius: var(--r-pill); margin-bottom: 20px; }
.hero h1 { font-size: 48px; font-weight: 400; line-height: 1.1; letter-spacing: -1.2px; color: var(--ink); margin-bottom: 20px; }
.hero-sub { font-size: 16px; color: var(--body); line-height: 1.6; margin-bottom: 32px; max-width: 460px; }
.hero-meta { font-size: 13px; color: var(--muted); }
.hero-img { border-radius: var(--r-lg); overflow: hidden; border: 1px solid var(--hairline); }
.hero-img img { width: 100%; height: 340px; object-fit: cover; }

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

/* ARTICLE GRID */
.articles-section { padding: 80px 0; }
.articles-section h2 { font-size: 36px; font-weight: 400; letter-spacing: -0.72px; color: var(--ink); margin-bottom: 8px; }
.articles-section .section-sub { font-size: 16px; color: var(--body); margin-bottom: 40px; }
.articles-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(--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 { height: 200px; overflow: hidden; }
.article-card-img img { width: 100%; height: 100%; object-fit: cover; }
.article-card-body { padding: 24px; flex: 1; display: flex; flex-direction: column; }
.article-card-body .tag { font-size: 11px; font-weight: 600; letter-spacing: 0.88px; text-transform: uppercase; color: var(--muted); margin-bottom: 10px; }
.article-card-body h3 { font-size: 18px; font-weight: 600; color: var(--ink); line-height: 1.35; margin-bottom: 10px; }
.article-card-body p { font-size: 14px; color: var(--body); line-height: 1.55; flex: 1; }
.article-card-body a.read-link { margin-top: 16px; font-size: 14px; font-weight: 500; color: var(--primary); display: inline-flex; align-items: center; gap: 4px; }

/* INFO BAND */
.info-band { background: var(--surface-card); border-top: 1px solid var(--hairline); border-bottom: 1px solid var(--hairline); padding: 64px 0; }
.info-band-inner { max-width: 1200px; margin: 0 auto; padding: 0 24px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; }
.info-item h3 { font-size: 22px; font-weight: 400; letter-spacing: -0.25px; color: var(--ink); margin-bottom: 8px; }
.info-item p { font-size: 14px; color: var(--body); line-height: 1.6; }

/* ARTICLE PAGE */
.article-header { padding: 64px 0 40px; border-bottom: 1px solid var(--hairline-soft); }
.article-header .container { max-width: 760px; }
.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(--primary); }
.article-header h1 { font-size: 40px; font-weight: 400; letter-spacing: -1px; color: var(--ink); line-height: 1.15; margin-bottom: 16px; }
.article-header .article-meta { font-size: 13px; color: var(--muted); display: flex; gap: 16px; flex-wrap: wrap; }
.article-header .article-meta span { display: flex; align-items: center; gap: 4px; }
.article-lead { font-size: 18px; color: var(--body-strong); line-height: 1.6; margin-top: 20px; }

.article-body { padding: 48px 0 80px; }
.article-body .container { max-width: 760px; }
.article-content h2 { font-size: 26px; font-weight: 400; letter-spacing: -0.4px; color: var(--ink); margin: 40px 0 14px; }
.article-content h3 { font-size: 20px; font-weight: 600; color: var(--ink); margin: 28px 0 10px; }
.article-content p { font-size: 16px; color: var(--body); line-height: 1.7; margin-bottom: 16px; }
.article-content ul, .article-content ol { margin: 0 0 16px 20px; }
.article-content li { font-size: 16px; color: var(--body); line-height: 1.7; margin-bottom: 6px; }
.article-content a { color: var(--primary); text-decoration: underline; text-underline-offset: 3px; }
.article-content a:hover { color: var(--primary-active); }
.article-content .callout { background: var(--surface-card); border: 1px solid var(--hairline); border-left: 4px solid var(--primary); border-radius: var(--r-md); padding: 16px 20px; margin: 24px 0; }
.article-content .callout p { margin: 0; font-size: 15px; }
.article-content figure { margin: 32px 0; }
.article-content figure img { border-radius: var(--r-lg); border: 1px solid var(--hairline); width: 100%; }
.article-content figcaption { font-size: 13px; color: var(--muted); margin-top: 8px; text-align: center; }
.article-content table { width: 100%; border-collapse: collapse; margin: 24px 0; font-size: 15px; }
.article-content table th { background: var(--surface-strong); color: var(--ink); font-weight: 600; padding: 10px 14px; text-align: left; border: 1px solid var(--hairline); }
.article-content table td { padding: 10px 14px; border: 1px solid var(--hairline); color: var(--body); }
.article-content table tr:nth-child(even) td { background: var(--canvas-soft); }

.article-sidebar { display: flex; flex-direction: column; gap: 24px; }

.toc-card { background: var(--surface-card); border: 1px solid var(--hairline); border-radius: var(--r-lg); padding: 24px; }
.toc-card strong { font-size: 13px; font-weight: 600; letter-spacing: 0.5px; text-transform: uppercase; color: var(--muted); display: block; margin-bottom: 12px; }
.toc-card ol { margin-left: 16px; }
.toc-card li { font-size: 14px; color: var(--body); margin-bottom: 6px; line-height: 1.5; }
.toc-card a { color: var(--body); }
.toc-card a:hover { color: var(--primary); }

.related-card { background: var(--surface-card); border: 1px solid var(--hairline); border-radius: var(--r-lg); padding: 24px; }
.related-card strong { font-size: 13px; font-weight: 600; letter-spacing: 0.5px; text-transform: uppercase; color: var(--muted); display: block; margin-bottom: 12px; }
.related-card ul li { margin-bottom: 10px; }
.related-card a { font-size: 14px; color: var(--ink); line-height: 1.45; }
.related-card a:hover { color: var(--primary); }

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

/* ABOUT / STATIC PAGES */
.page-header { padding: 64px 0 40px; border-bottom: 1px solid var(--hairline-soft); }
.page-header h1 { font-size: 40px; font-weight: 400; letter-spacing: -1px; color: var(--ink); margin-bottom: 12px; }
.page-header p { font-size: 18px; color: var(--body); }
.page-body { padding: 48px 0 80px; }
.page-content { max-width: 760px; }
.page-content h2 { font-size: 26px; font-weight: 400; letter-spacing: -0.4px; color: var(--ink); margin: 36px 0 12px; }
.page-content h3 { font-size: 20px; font-weight: 600; color: var(--ink); margin: 24px 0 8px; }
.page-content p { font-size: 16px; color: var(--body); line-height: 1.7; margin-bottom: 14px; }
.page-content ul, .page-content ol { margin: 0 0 14px 20px; }
.page-content li { font-size: 16px; color: var(--body); line-height: 1.7; margin-bottom: 6px; }
.page-content a { color: var(--primary); text-decoration: underline; text-underline-offset: 3px; }

/* CONTACT FORM */
.contact-section { padding: 80px 0; background: var(--surface-card); border-top: 1px solid var(--hairline); border-bottom: 1px solid var(--hairline); }
.contact-inner { max-width: 600px; margin: 0 auto; padding: 0 24px; }
.contact-inner h2 { font-size: 26px; font-weight: 400; letter-spacing: -0.4px; color: var(--ink); margin-bottom: 8px; }
.contact-inner .section-sub { font-size: 15px; color: var(--body); margin-bottom: 32px; }
.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); border: 1px solid var(--hairline-strong); border-radius: var(--r-md); padding: 12px 16px; font-size: 16px; color: var(--ink); font-family: inherit; height: 44px; transition: border-color 0.15s; }
.form-group textarea { height: auto; min-height: 100px; resize: vertical; }
.form-group input:focus, .form-group textarea:focus { outline: none; border-color: var(--ink); }
.form-group input::placeholder, .form-group textarea::placeholder { color: var(--muted-soft); }
.btn-primary { background: var(--primary); color: var(--on-primary); border: none; border-radius: var(--r-md); padding: 10px 20px; font-size: 14px; font-weight: 500; cursor: pointer; height: 40px; display: inline-flex; align-items: center; gap: 8px; transition: background 0.15s; }
.btn-primary:hover { background: var(--primary-active); }
.btn-secondary { background: var(--surface-card); color: var(--ink); border: 1px solid var(--hairline-strong); border-radius: var(--r-md); padding: 10px 20px; font-size: 14px; font-weight: 500; cursor: pointer; height: 40px; display: inline-flex; align-items: center; transition: background 0.15s; }
.btn-secondary:hover { background: var(--surface-strong); }
.form-msg { margin-top: 16px; padding: 12px 16px; border-radius: var(--r-md); font-size: 14px; display: none; }
.form-msg.success { background: #d4edda; color: #155724; border: 1px solid #c3e6cb; display: block; }
.form-msg.loading { background: var(--canvas-soft); color: var(--muted); border: 1px solid var(--hairline); display: block; }
.form-msg.error { background: #f8d7da; color: #721c24; border: 1px solid #f5c6cb; display: block; }

/* DISCLAIMER */
.disclaimer { background: var(--canvas-soft); border-top: 1px solid var(--hairline-soft); padding: 16px 0; }
.disclaimer p { max-width: 1200px; margin: 0 auto; padding: 0 24px; font-size: 13px; color: var(--muted); line-height: 1.5; }

/* FOOTER */
.site-footer { background: var(--canvas); border-top: 1px solid var(--hairline); padding: 64px 0 0; }
.footer-inner { max-width: 1200px; margin: 0 auto; padding: 0 24px; display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; }
.footer-logo { font-size: 18px; font-weight: 600; color: var(--ink); display: block; margin-bottom: 10px; }
.footer-logo span { color: var(--primary); }
.footer-col > p { font-size: 14px; color: var(--body); line-height: 1.6; max-width: 260px; }
.footer-col strong { font-size: 13px; font-weight: 600; letter-spacing: 0.5px; text-transform: uppercase; color: var(--muted); display: block; margin-bottom: 12px; }
.footer-col ul li { margin-bottom: 8px; }
.footer-col a { font-size: 14px; color: var(--body); }
.footer-col a:hover { color: var(--primary); }
.footer-bottom { max-width: 1200px; margin: 0 auto; padding: 20px 24px; display: flex; justify-content: space-between; align-items: center; border-top: 1px solid var(--hairline-soft); margin-top: 40px; font-size: 13px; color: var(--muted); flex-wrap: wrap; gap: 8px; }

/* COOKIE BANNER */
.cookie-banner { position: fixed; bottom: 0; left: 0; right: 0; background: var(--ink); color: var(--canvas); z-index: 200; padding: 16px 24px; display: none; }
.cookie-banner.visible { display: block; }
.cookie-inner { max-width: 1200px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.cookie-inner p { font-size: 14px; line-height: 1.5; }
.cookie-inner a { color: var(--canvas); text-decoration: underline; }
.cookie-btns { display: flex; gap: 10px; flex-shrink: 0; }
.cookie-btns button { cursor: pointer; border-radius: var(--r-md); font-size: 14px; font-weight: 500; padding: 8px 16px; border: none; height: 36px; }
#cookie-accept { background: var(--primary); color: var(--on-primary); }
#cookie-accept:hover { background: var(--primary-active); }
#cookie-reject { background: transparent; color: var(--canvas); border: 1px solid rgba(255,255,255,0.4); }
#cookie-reject:hover { background: rgba(255,255,255,0.1); }

/* RESPONSIVE */
@media (max-width: 1024px) {
  .articles-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .article-two-col { grid-template-columns: 1fr; }
  .article-sidebar { flex-direction: row; flex-wrap: wrap; }
  .toc-card, .related-card { flex: 1; min-width: 240px; }
  .hero-inner { grid-template-columns: 1fr; gap: 40px; }
  .hero h1 { font-size: 38px; }
  .info-band-inner { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .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: 12px 24px 20px; gap: 4px; }
  .nav-links.open { display: flex; }
  .nav-toggle { display: flex; }
  .site-nav { position: relative; }
  .articles-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 30px; }
  .info-band-inner { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; }
  .article-header h1 { font-size: 28px; }
  .page-header h1 { font-size: 28px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}