@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;
  --muted: #807d72;
  --muted-soft: #a09c92;
  --on-primary: #ffffff;
  --hairline: #e6e5e0;
  --hairline-soft: #efeee8;
  --hairline-strong: #cfcdc4;
  --success: #1f8a65;
  --error: #cf2d56;
  --radius-xs: 4px;
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-pill: 9999px;
}

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-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; }
ul { list-style: none; }

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

/* TOP NAV */
.site-nav { background: var(--canvas); border-bottom: 1px solid var(--hairline); position: sticky; top: 0; z-index: 100; height: 64px; }
.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; gap: 28px; align-items: center; }
.nav-links a { font-size: 14px; font-weight: 500; color: var(--body); transition: color 0.15s; }
.nav-links a:hover { color: var(--ink); }
.nav-hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 4px; background: none; border: none; }
.nav-hamburger span { display: block; width: 22px; height: 2px; background: var(--ink); border-radius: 2px; transition: all 0.2s; }
.mobile-menu { display: none; background: var(--canvas); border-bottom: 1px solid var(--hairline); padding: 16px 24px; }
.mobile-menu.open { display: block; }
.mobile-menu a { display: block; font-size: 15px; font-weight: 500; color: var(--body); padding: 10px 0; border-bottom: 1px solid var(--hairline-soft); }
.mobile-menu a:last-child { border-bottom: none; }

/* HERO */
.hero-band { padding: 80px 0; }
.hero-band .badge-pill { 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; border-radius: var(--radius-pill); padding: 4px 10px; margin-bottom: 24px; }
.hero-band h1 { font-size: 56px; font-weight: 400; line-height: 1.1; letter-spacing: -1.4px; color: var(--ink); max-width: 720px; margin-bottom: 20px; }
.hero-band .hero-lead { font-size: 16px; color: var(--body); max-width: 560px; line-height: 1.6; margin-bottom: 32px; }
.hero-meta { display: flex; gap: 24px; align-items: center; flex-wrap: wrap; }
.hero-meta .update-date { font-size: 13px; color: var(--muted); }
.hero-image-wrap { margin-top: 48px; border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--hairline); }
.hero-image-wrap img { width: 100%; height: 420px; object-fit: cover; }

/* SECTION */
.section { padding: 80px 0; }
.section-label { 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-lead { font-size: 16px; color: var(--body); max-width: 600px; line-height: 1.6; margin-bottom: 48px; }
.section-divider { border: none; border-top: 1px solid var(--hairline); }

/* ARTICLE GRID */
.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(--radius-lg); overflow: hidden; 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: 24px; }
.article-card-category { font-size: 11px; font-weight: 600; letter-spacing: 0.88px; text-transform: uppercase; color: var(--muted); margin-bottom: 10px; }
.article-card-title { font-size: 18px; font-weight: 600; color: var(--ink); line-height: 1.3; margin-bottom: 10px; }
.article-card-excerpt { font-size: 14px; color: var(--body); line-height: 1.6; margin-bottom: 16px; }
.article-card-meta { font-size: 13px; color: var(--muted-soft); }
.article-link { display: inline-flex; align-items: center; gap: 4px; font-size: 14px; font-weight: 500; color: var(--primary); margin-top: 12px; }

/* FEATURED / SPLIT */
.featured-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; align-items: center; }
.featured-text .section-label { margin-bottom: 12px; }
.featured-text h2 { font-size: 26px; font-weight: 400; letter-spacing: -0.325px; color: var(--ink); margin-bottom: 16px; line-height: 1.3; }
.featured-text p { font-size: 16px; color: var(--body); line-height: 1.6; margin-bottom: 12px; }
.featured-image { border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--hairline); }
.featured-image img { width: 100%; height: 320px; object-fit: cover; }

/* STATS ROW */
.stats-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--hairline); border: 1px solid var(--hairline); border-radius: var(--radius-lg); overflow: hidden; }
.stat-item { background: var(--surface-card); padding: 32px 24px; }
.stat-value { font-size: 36px; font-weight: 400; letter-spacing: -0.72px; color: var(--ink); margin-bottom: 6px; }
.stat-label { font-size: 14px; color: var(--body); }

/* INFO CARDS ROW */
.info-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 32px; }
.info-card { background: var(--surface-card); border: 1px solid var(--hairline); border-radius: var(--radius-lg); padding: 24px; }
.info-card-icon { width: 36px; height: 36px; border-radius: var(--radius-md); background: var(--surface-strong); display: flex; align-items: center; justify-content: center; margin-bottom: 14px; font-size: 18px; }
.info-card h3 { font-size: 16px; font-weight: 600; color: var(--ink); margin-bottom: 8px; }
.info-card p { font-size: 14px; color: var(--body); line-height: 1.6; }

/* ARTICLE PAGE */
.article-header { padding: 64px 0 48px; }
.article-header .badge-pill { margin-bottom: 20px; }
.article-header h1 { font-size: 42px; font-weight: 400; letter-spacing: -1.05px; color: var(--ink); line-height: 1.15; max-width: 760px; margin-bottom: 16px; }
.article-header .article-meta { font-size: 14px; color: var(--muted); display: flex; gap: 16px; flex-wrap: wrap; align-items: center; }
.article-hero-img { border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--hairline); margin-bottom: 48px; }
.article-hero-img img { width: 100%; height: 400px; object-fit: cover; }

.article-body { max-width: 760px; }
.article-body h2 { font-size: 26px; font-weight: 400; letter-spacing: -0.325px; color: var(--ink); margin: 40px 0 16px; line-height: 1.3; }
.article-body h3 { font-size: 20px; font-weight: 600; color: var(--ink); margin: 28px 0 12px; }
.article-body p { font-size: 16px; color: var(--body); line-height: 1.65; margin-bottom: 20px; }
.article-body ul, .article-body ol { padding-left: 20px; margin-bottom: 20px; }
.article-body ul { list-style: disc; }
.article-body ol { list-style: decimal; }
.article-body li { font-size: 16px; color: var(--body); line-height: 1.65; margin-bottom: 8px; }
.article-body strong { color: var(--ink); font-weight: 600; }
.article-body a { color: var(--primary); text-decoration: underline; text-underline-offset: 3px; }
.article-body blockquote { border-left: 3px solid var(--primary); padding: 16px 20px; background: var(--canvas-soft); border-radius: 0 var(--radius-sm) var(--radius-sm) 0; margin: 24px 0; }
.article-body blockquote p { margin: 0; font-size: 15px; color: var(--body); font-style: italic; }

.info-box { background: var(--surface-card); border: 1px solid var(--hairline); border-radius: var(--radius-lg); padding: 24px 28px; margin: 28px 0; }
.info-box h4 { font-size: 14px; font-weight: 600; color: var(--ink); margin-bottom: 10px; text-transform: uppercase; letter-spacing: 0.5px; }
.info-box ul { list-style: none; padding: 0; }
.info-box li { font-size: 14px; color: var(--body); padding: 6px 0; border-bottom: 1px solid var(--hairline-soft); display: flex; align-items: flex-start; gap: 8px; }
.info-box li:last-child { border-bottom: none; }
.info-box li::before { content: '→'; color: var(--primary); flex-shrink: 0; margin-top: 1px; }

.article-sidebar { position: sticky; top: 80px; }
.toc-box { background: var(--surface-card); border: 1px solid var(--hairline); border-radius: var(--radius-lg); padding: 20px 24px; margin-bottom: 24px; }
.toc-box h4 { font-size: 12px; font-weight: 600; letter-spacing: 0.88px; text-transform: uppercase; color: var(--muted); margin-bottom: 14px; }
.toc-box ul { list-style: none; padding: 0; }
.toc-box li { margin-bottom: 8px; }
.toc-box a { font-size: 14px; color: var(--body); transition: color 0.15s; }
.toc-box a:hover { color: var(--primary); }

.article-layout { display: grid; grid-template-columns: 1fr 280px; gap: 48px; padding-bottom: 80px; }
.related-articles { margin-top: 60px; padding-top: 40px; border-top: 1px solid var(--hairline); }
.related-articles h3 { font-size: 20px; font-weight: 400; color: var(--ink); margin-bottom: 24px; }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }

/* CONTACT FORM */
.contact-section { background: var(--canvas-soft); border-top: 1px solid var(--hairline); border-bottom: 1px solid var(--hairline); 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; color: var(--body); line-height: 1.6; margin-bottom: 12px; }
.form-group { margin-bottom: 16px; }
.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); font-family: inherit; font-size: 16px; border: 1px solid var(--hairline-strong); border-radius: var(--radius-md); padding: 12px 16px; height: 44px; transition: border-color 0.15s; outline: none; }
.form-group textarea { height: auto; resize: vertical; min-height: 100px; }
.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: 13px; color: var(--error); margin-top: 4px; display: none; }
.btn-primary { display: inline-flex; align-items: center; justify-content: center; gap: 8px; background: var(--primary); color: var(--on-primary); font-size: 14px; font-weight: 500; padding: 10px 20px; height: 40px; border-radius: var(--radius-md); border: none; cursor: pointer; transition: background 0.15s; font-family: inherit; }
.btn-primary:hover { background: var(--primary-active); }
.btn-primary:disabled { opacity: 0.65; cursor: not-allowed; }
.form-success { display: none; background: var(--success); color: #fff; border-radius: var(--radius-md); padding: 14px 18px; font-size: 15px; margin-top: 16px; }
.form-success.visible { display: block; }
.spinner { width: 16px; height: 16px; border: 2px solid rgba(255,255,255,0.4); border-top-color: #fff; border-radius: 50%; animation: spin 0.6s linear infinite; display: none; }
.spinner.active { display: inline-block; }
@keyframes spin { to { transform: rotate(360deg); } }

/* 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-banner.visible { display: block; }
.cookie-inner { max-width: 1200px; margin: 0 auto; display: flex; gap: 24px; align-items: center; justify-content: space-between; flex-wrap: wrap; }
.cookie-text { font-size: 14px; line-height: 1.5; }
.cookie-text a { color: var(--primary); text-decoration: underline; }
.cookie-actions { display: flex; gap: 10px; flex-shrink: 0; }
.btn-cookie-accept { background: var(--primary); color: var(--on-primary); font-size: 13px; font-weight: 500; padding: 8px 16px; border-radius: var(--radius-md); border: none; cursor: pointer; font-family: inherit; }
.btn-cookie-reject { background: transparent; color: var(--muted-soft); font-size: 13px; font-weight: 500; padding: 8px 16px; border-radius: var(--radius-md); border: 1px solid rgba(255,255,255,0.2); cursor: pointer; font-family: inherit; }
.btn-cookie-accept:hover { background: var(--primary-active); }
.btn-cookie-reject:hover { color: var(--canvas); }

/* 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 1fr; gap: 32px; margin-bottom: 48px; }
.footer-brand .nav-logo { margin-bottom: 14px; display: block; }
.footer-brand p { font-size: 14px; color: var(--muted); line-height: 1.6; max-width: 220px; }
.footer-col h4 { font-size: 12px; font-weight: 600; letter-spacing: 0.88px; text-transform: uppercase; color: var(--muted); margin-bottom: 14px; }
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 10px; }
.footer-col a { font-size: 14px; color: var(--body); transition: color 0.15s; }
.footer-col a:hover { color: var(--ink); }
.footer-bottom { border-top: 1px solid var(--hairline); padding-top: 24px; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; }
.footer-bottom p { font-size: 13px; color: var(--muted); }

/* ABOUT / PAGES */
.page-header { padding: 64px 0 48px; border-bottom: 1px solid var(--hairline); margin-bottom: 64px; }
.page-header h1 { font-size: 42px; font-weight: 400; letter-spacing: -1.05px; color: var(--ink); margin-bottom: 16px; }
.page-header p { font-size: 16px; color: var(--body); max-width: 600px; line-height: 1.6; }
.prose { max-width: 760px; }
.prose h2 { font-size: 26px; font-weight: 400; color: var(--ink); margin: 40px 0 16px; letter-spacing: -0.3px; }
.prose h3 { font-size: 20px; font-weight: 600; color: var(--ink); margin: 28px 0 12px; }
.prose p { font-size: 16px; color: var(--body); line-height: 1.65; margin-bottom: 20px; }
.prose ul, .prose ol { padding-left: 20px; margin-bottom: 20px; }
.prose ul { list-style: disc; }
.prose ol { list-style: decimal; }
.prose li { font-size: 16px; color: var(--body); line-height: 1.65; margin-bottom: 8px; }
.prose a { color: var(--primary); text-decoration: underline; text-underline-offset: 3px; }
.prose strong { color: var(--ink); font-weight: 600; }

/* BREADCRUMB */
.breadcrumb { font-size: 13px; color: var(--muted); margin-bottom: 24px; display: flex; gap: 6px; align-items: center; flex-wrap: wrap; }
.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb span { color: var(--hairline-strong); }

/* RESPONSIVE */
@media (max-width: 1024px) {
  .articles-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr 1fr; }
  .footer-brand { grid-column: span 3; }
  .stats-row { grid-template-columns: repeat(2, 1fr); }
  .article-layout { grid-template-columns: 1fr; }
  .article-sidebar { position: static; }
}

@media (max-width: 768px) {
  .hero-band h1 { font-size: 36px; letter-spacing: -0.9px; }
  .section-title { font-size: 28px; }
  .nav-links { display: none; }
  .nav-hamburger { display: flex; }
  .featured-grid { grid-template-columns: 1fr; }
  .featured-image { order: -1; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: span 2; }
  .related-grid { grid-template-columns: 1fr; }
  .hero-image-wrap img { height: 260px; }
  .stats-row { grid-template-columns: 1fr 1fr; }
  .info-cards { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .articles-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-brand { grid-column: auto; }
  .page-header h1 { font-size: 32px; }
  .article-header h1 { font-size: 28px; letter-spacing: -0.5px; }
  .cookie-inner { flex-direction: column; align-items: flex-start; }
  .stats-row { grid-template-columns: 1fr; }
}