@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

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

:root {
  --blue: #3E6AE1;
  --blue-dark: #2d55c4;
  --white: #ffffff;
  --light-ash: #F4F4F4;
  --carbon: #171A20;
  --graphite: #393C41;
  --pewter: #5C5E62;
  --silver-fog: #8E8E8E;
  --cloud-gray: #EEEEEE;
  --pale-silver: #D0D1D2;
}

html { scroll-behavior: smooth; font-size: 16px; }
body { font-family: 'Inter', -apple-system, Arial, sans-serif; background: var(--white); color: var(--graphite); line-height: 1.55; }

a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; height: auto; display: block; }

.container { max-width: 1280px; margin: 0 auto; padding: 0 32px; }

/* TOP NAV */
.top-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--white);
  border-bottom: 1px solid var(--cloud-gray);
  height: 64px;
  display: flex;
  align-items: center;
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}
.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}
.brand-name {
  font-size: 17px;
  font-weight: 600;
  color: var(--carbon);
  letter-spacing: -0.2px;
}
.brand-tagline {
  font-size: 12px;
  font-weight: 400;
  color: var(--pewter);
  display: none;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 2px;
  list-style: none;
}
.nav-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--carbon);
  padding: 6px 14px;
  border-radius: 4px;
  transition: color 0.33s, background-color 0.33s;
  text-decoration: none;
}
.nav-links a:hover { background: var(--light-ash); }
.nav-links a.active { color: var(--blue); }
.burger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  color: var(--carbon);
}
.mobile-nav {
  display: none;
  position: fixed;
  inset: 0;
  background: var(--white);
  z-index: 200;
  flex-direction: column;
  padding: 24px 32px;
}
.mobile-nav.open { display: flex; }
.mobile-nav-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 32px; }
.mobile-nav-close { background: none; border: none; cursor: pointer; color: var(--carbon); padding: 8px; }
.mobile-nav-links { list-style: none; }
.mobile-nav-links a { display: block; font-size: 20px; font-weight: 500; color: var(--carbon); padding: 14px 0; border-bottom: 1px solid var(--cloud-gray); text-decoration: none; transition: color 0.2s; }
.mobile-nav-links a:hover { color: var(--blue); }

/* SKIP LINK */
.skip-link { position: absolute; top: -100px; left: 16px; background: var(--blue); color: var(--white); padding: 8px 16px; border-radius: 0 0 4px 4px; font-weight: 600; z-index: 9999; }
.skip-link:focus { top: 0; }

/* HERO */
.hero {
  padding: 80px 0 72px;
  background: var(--white);
  border-bottom: 1px solid var(--cloud-gray);
}
.hero-kicker {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 16px;
}
.hero h1 {
  font-size: clamp(32px, 5vw, 56px);
  font-weight: 700;
  color: var(--carbon);
  line-height: 1.1;
  letter-spacing: -1.5px;
  max-width: 800px;
  margin-bottom: 20px;
}
.hero-lead {
  font-size: 18px;
  color: var(--graphite);
  max-width: 620px;
  line-height: 1.6;
  margin-bottom: 36px;
}
.btn-primary {
  display: inline-block;
  background: var(--blue);
  color: var(--white);
  font-size: 14px;
  font-weight: 500;
  padding: 0 24px;
  height: 40px;
  line-height: 40px;
  border-radius: 4px;
  border: none;
  cursor: pointer;
  transition: background-color 0.33s, color 0.33s;
  text-decoration: none;
}
.btn-primary:hover { background: var(--blue-dark); text-decoration: none; }
.btn-secondary {
  display: inline-block;
  background: var(--white);
  color: var(--graphite);
  font-size: 14px;
  font-weight: 500;
  padding: 0 24px;
  height: 40px;
  line-height: 40px;
  border-radius: 4px;
  border: 1px solid var(--pale-silver);
  cursor: pointer;
  transition: background-color 0.33s, color 0.33s;
  text-decoration: none;
  margin-left: 12px;
}
.btn-secondary:hover { background: var(--light-ash); text-decoration: none; }
.hero-image-strip {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 16px;
  margin-top: 56px;
}
.hero-img-main, .hero-img-side {
  border-radius: 12px;
  overflow: hidden;
}
.hero-img-main img { width: 100%; height: 340px; object-fit: cover; }
.hero-img-side img { width: 100%; height: 340px; object-fit: cover; }
.img-caption { font-size: 12px; color: var(--silver-fog); padding: 8px 12px; background: var(--light-ash); }

/* SECTION */
.section { padding: 72px 0; border-bottom: 1px solid var(--cloud-gray); }
.section:last-child { border-bottom: none; }
.section-kicker {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 12px;
}
.section h2 {
  font-size: clamp(26px, 3vw, 36px);
  font-weight: 700;
  color: var(--carbon);
  letter-spacing: -1px;
  line-height: 1.15;
  margin-bottom: 16px;
}
.section h3 { font-size: 20px; font-weight: 600; color: var(--carbon); margin: 32px 0 10px; }
.section p { font-size: 16px; color: var(--graphite); line-height: 1.65; margin-bottom: 16px; max-width: 760px; }

/* ARTICLE CARD */
.article-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 24px; margin-top: 32px; }
.article-card {
  background: var(--white);
  border: 1px solid var(--cloud-gray);
  border-radius: 12px;
  overflow: hidden;
  transition: border-color 0.33s;
  display: flex;
  flex-direction: column;
}
.article-card:hover { border-color: var(--blue); }
.article-card img { width: 100%; height: 200px; object-fit: cover; }
.article-card-body { padding: 20px; flex: 1; }
.article-card-kicker { font-size: 12px; font-weight: 600; letter-spacing: 1px; text-transform: uppercase; color: var(--blue); margin-bottom: 8px; }
.article-card h3 { font-size: 17px; font-weight: 600; color: var(--carbon); line-height: 1.35; margin-bottom: 10px; }
.article-card p { font-size: 14px; color: var(--graphite); line-height: 1.6; margin: 0; }
.article-card a.read-more { display: inline-block; font-size: 13px; font-weight: 600; color: var(--blue); margin-top: 14px; }

/* INTENSITY BAND */
.intensity-strip { display: flex; border-radius: 8px; overflow: hidden; margin: 24px 0; }
.intensity-band { flex: 1; padding: 14px 16px; text-align: center; }
.intensity-band .band-label { font-size: 12px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.8px; margin-bottom: 4px; }
.intensity-band .band-value { font-size: 20px; font-weight: 700; }
.band-low { background: #e8f5e9; }
.band-low .band-label { color: #388e3c; }
.band-low .band-value { color: #388e3c; }
.band-moderate { background: #fff3e0; }
.band-moderate .band-label { color: #e65100; }
.band-moderate .band-value { color: #e65100; }
.band-high { background: #fce4ec; }
.band-high .band-label { color: #c62828; }
.band-high .band-value { color: #c62828; }
.band-extreme { background: #e8eaf6; }
.band-extreme .band-label { color: #1a237e; }
.band-extreme .band-value { color: #1a237e; }

/* CLASSIFICATION CARD */
.class-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 16px; margin-top: 28px; }
.class-card {
  border: 1px solid var(--cloud-gray);
  border-radius: 12px;
  padding: 24px;
  background: var(--white);
  transition: border-color 0.33s;
}
.class-card:hover { border-color: var(--blue); }
.class-card .class-badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.8px;
  text-transform: uppercase;
  background: var(--light-ash);
  color: var(--pewter);
  padding: 3px 10px;
  border-radius: 4px;
  margin-bottom: 12px;
}
.class-card .class-badge.blue { background: #dce8fb; color: var(--blue); }
.class-card h4 { font-size: 16px; font-weight: 600; color: var(--carbon); margin-bottom: 8px; }
.class-card p { font-size: 14px; color: var(--graphite); margin: 0; line-height: 1.55; }

/* BREADCRUMB */
.breadcrumb { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--silver-fog); margin-bottom: 28px; flex-wrap: wrap; }
.breadcrumb a { color: var(--silver-fog); text-decoration: none; }
.breadcrumb a:hover { color: var(--blue); text-decoration: underline; }
.breadcrumb span { color: var(--graphite); }

/* TOC */
.toc-box {
  background: var(--light-ash);
  border-radius: 8px;
  padding: 24px;
  margin-bottom: 40px;
}
.toc-box h4 { font-size: 13px; font-weight: 600; text-transform: uppercase; letter-spacing: 1px; color: var(--pewter); margin-bottom: 12px; }
.toc-box ol { padding-left: 20px; }
.toc-box li { margin-bottom: 6px; }
.toc-box a { font-size: 14px; color: var(--graphite); }
.toc-box a:hover { color: var(--blue); }

/* RELATED CONTENT */
.related-section { margin-top: 64px; padding-top: 40px; border-top: 1px solid var(--cloud-gray); }
.related-section h3 { font-size: 18px; font-weight: 600; color: var(--carbon); margin-bottom: 20px; }
.related-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 16px; }
.related-card {
  border: 1px solid var(--cloud-gray);
  border-radius: 8px;
  padding: 18px;
  text-decoration: none;
  transition: border-color 0.33s;
  display: block;
}
.related-card:hover { border-color: var(--blue); text-decoration: none; }
.related-card .rc-label { font-size: 12px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.8px; color: var(--blue); margin-bottom: 6px; }
.related-card h4 { font-size: 14px; font-weight: 600; color: var(--carbon); line-height: 1.35; }

/* PROSE */
.prose h2 { font-size: 24px; font-weight: 700; color: var(--carbon); letter-spacing: -0.5px; margin: 40px 0 12px; }
.prose h3 { font-size: 18px; font-weight: 600; color: var(--carbon); margin: 28px 0 10px; }
.prose p { font-size: 16px; color: var(--graphite); line-height: 1.7; margin-bottom: 16px; max-width: 780px; }
.prose ul, .prose ol { padding-left: 24px; margin-bottom: 16px; }
.prose li { font-size: 16px; color: var(--graphite); line-height: 1.65; margin-bottom: 6px; }
.prose a { color: var(--blue); }
.prose strong { font-weight: 600; color: var(--carbon); }

/* INFO BOX */
.info-box {
  background: var(--light-ash);
  border-left: 3px solid var(--blue);
  border-radius: 0 6px 6px 0;
  padding: 14px 18px;
  margin: 24px 0;
}
.info-box p { font-size: 14px; color: var(--graphite); margin: 0; }

/* BYLINE */
.byline { font-size: 13px; color: var(--silver-fog); margin-bottom: 28px; }

/* PAGE HERO */
.page-hero { padding: 48px 0 36px; border-bottom: 1px solid var(--cloud-gray); margin-bottom: 36px; }
.page-hero h1 { font-size: clamp(28px, 4vw, 44px); font-weight: 700; color: var(--carbon); letter-spacing: -1.2px; line-height: 1.1; margin-bottom: 12px; }
.page-hero p { font-size: 16px; color: var(--graphite); max-width: 640px; }

/* CONTENT IMAGE */
.content-img { border-radius: 12px; overflow: hidden; margin: 32px 0; }
.content-img img { width: 100%; object-fit: cover; }
.content-img figcaption { font-size: 12px; color: var(--silver-fog); padding: 8px 14px; background: var(--light-ash); }

/* CONTACT FORM */
.contact-form { max-width: 540px; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 14px; font-weight: 500; color: var(--carbon); margin-bottom: 6px; }
.form-group input, .form-group textarea {
  width: 100%;
  background: var(--white);
  border: 1px solid var(--pale-silver);
  border-radius: 4px;
  padding: 10px 14px;
  font-size: 14px;
  font-family: 'Inter', sans-serif;
  color: var(--carbon);
  height: 40px;
  transition: border-color 0.33s;
}
.form-group input:focus, .form-group textarea:focus { outline: none; border-color: var(--blue); }
.form-group input::placeholder, .form-group textarea::placeholder { color: var(--silver-fog); }
.form-group textarea { height: 120px; resize: vertical; }
.form-error { font-size: 12px; color: #c62828; margin-top: 4px; }
.form-msg { margin-top: 16px; font-size: 14px; font-weight: 500; color: #388e3c; }

/* COOKIE BANNER */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--white);
  border-top: 1px solid var(--cloud-gray);
  padding: 16px 32px;
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.cookie-banner p { font-size: 14px; color: var(--graphite); flex: 1; min-width: 200px; }
.cookie-banner p a { color: var(--blue); }
.cookie-actions { display: flex; gap: 10px; flex-shrink: 0; }
.btn-cookie-accept { background: var(--blue); color: var(--white); border: none; padding: 8px 20px; border-radius: 4px; font-size: 14px; font-weight: 500; cursor: pointer; transition: background-color 0.33s; }
.btn-cookie-accept:hover { background: var(--blue-dark); }
.btn-cookie-reject { background: var(--white); color: var(--graphite); border: 1px solid var(--pale-silver); padding: 8px 20px; border-radius: 4px; font-size: 14px; font-weight: 500; cursor: pointer; transition: background-color 0.33s; }
.btn-cookie-reject:hover { background: var(--light-ash); }
.cookie-banner.hidden { display: none; }

/* FOOTER */
footer {
  background: var(--white);
  border-top: 1px solid var(--cloud-gray);
  padding: 64px 0 32px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}
.footer-brand p { font-size: 14px; color: var(--pewter); line-height: 1.6; margin-top: 10px; max-width: 260px; }
.footer-col h5 { font-size: 13px; font-weight: 600; color: var(--carbon); text-transform: uppercase; letter-spacing: 0.8px; margin-bottom: 14px; }
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 8px; }
.footer-col ul a { font-size: 14px; color: var(--pewter); text-decoration: none; transition: color 0.2s; }
.footer-col ul a:hover { color: var(--carbon); }
.footer-bottom { border-top: 1px solid var(--cloud-gray); padding-top: 24px; }
.footer-bottom p { font-size: 13px; color: var(--silver-fog); line-height: 1.65; margin-bottom: 8px; }

/* MAGAZINE FEATURE */
.magazine-feature { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; padding: 64px 0; border-bottom: 1px solid var(--cloud-gray); }
.magazine-feature:nth-child(even) .mag-text { order: 2; }
.magazine-feature:nth-child(even) .mag-img { order: 1; }
.mag-text .kicker { font-size: 12px; font-weight: 600; text-transform: uppercase; letter-spacing: 1.2px; color: var(--blue); margin-bottom: 12px; }
.mag-text h2 { font-size: 30px; font-weight: 700; color: var(--carbon); letter-spacing: -0.8px; line-height: 1.2; margin-bottom: 14px; }
.mag-text p { font-size: 16px; color: var(--graphite); line-height: 1.65; margin-bottom: 16px; }
.mag-img img { width: 100%; height: 320px; object-fit: cover; border-radius: 12px; }
.mag-img figcaption { font-size: 12px; color: var(--silver-fog); margin-top: 8px; }

/* FULL-WIDTH SECTIONS */
.full-width-section { background: var(--light-ash); padding: 72px 0; }

@media (max-width: 1024px) {
  .magazine-feature { grid-template-columns: 1fr; gap: 28px; }
  .magazine-feature:nth-child(even) .mag-text { order: 1; }
  .magazine-feature:nth-child(even) .mag-img { order: 2; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .hero-image-strip { grid-template-columns: 1fr; }
  .hero-img-side { display: none; }
}
@media (max-width: 768px) {
  .nav-links { display: none; }
  .burger { display: flex; }
  .hero h1 { letter-spacing: -0.8px; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .cookie-banner { flex-direction: column; align-items: flex-start; }
  .container { padding: 0 16px; }
}