:root {
  --bg-canvas: #211a24;
  --bg-surface: #352b38;
  --bg-surface-trans: rgba(53, 43, 56, 0.78);
  --bg-surface-hover: #433747;
  --text-primary: #f4f1ea;
  --text-muted: #d0c8b8;
  --accent-primary: #d4a84b;
  --accent-secondary: #e6c575;
  --accent-deep: #8f6e28;
  --border-subtle: rgba(212, 168, 75, 0.22);
  --border-strong: rgba(212, 168, 75, 0.45);
  --radius: 4px;
  --shadow-elevation: 0 10px 28px -4px rgba(12, 8, 14, 0.6);
  --glow-accent: 0 0 28px -4px rgba(212, 168, 75, 0.28);
  --font-serif: Charter, Cambria, Georgia, serif;
}

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

html {
  font-family: var(--font-serif);
  background-color: var(--bg-canvas);
  color: var(--text-primary);
  line-height: 1.68;
  font-size: 17px;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  padding: 0;
  background-color: var(--bg-canvas);
  background-image:
    radial-gradient(circle at 18% 12%, rgba(212, 168, 75, 0.12) 0%, transparent 45%),
    radial-gradient(circle at 82% 65%, rgba(143, 110, 40, 0.10) 0%, transparent 50%);
  background-attachment: fixed;
  color: var(--text-primary);
  overflow-wrap: anywhere;
  hyphens: auto;
}

a {
  color: var(--accent-secondary);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: color 0.2s ease, border-color 0.2s ease;
}

a:hover, a:focus {
  color: #fff2c4;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius);
  border: 1px solid var(--border-subtle);
}

.top-tagline {
  background: #17111a;
  border-bottom: 1px solid var(--border-subtle);
  padding: 0.45rem 1.25rem;
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-primary);
  display: flex;
  justify-content: flex-start;
  align-items: center;
}

.site-header {
  position: static;
  background: rgba(33, 26, 36, 0.95);
  border-bottom: 1px solid var(--border-subtle);
  padding: 1rem 1.5rem;
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-wrapper {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  text-align: left;
}

.brand-logo {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-primary);
  text-decoration: none;
}

.brand-sub {
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.nav-desktop {
  display: flex;
  gap: 1.2rem;
  align-items: center;
}

.nav-desktop a {
  text-decoration: none;
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-primary);
  padding: 0.35rem 0.5rem;
  border-bottom: 2px solid transparent;
}

.nav-desktop a:hover,
.nav-desktop a.active {
  color: var(--accent-secondary);
  border-bottom: 2px solid var(--accent-primary);
}

.mobile-menu-btn {
  display: none;
  background: transparent;
  color: var(--accent-primary);
  border: 1px solid var(--border-subtle);
  font-size: 1.4rem;
  line-height: 1;
  padding: 0.3rem 0.65rem;
  cursor: pointer;
  border-radius: var(--radius);
}

.nav-mobile {
  display: none;
  background: #2b222f;
  border-bottom: 1px solid var(--border-subtle);
  padding: 1rem 1.5rem;
}

.nav-mobile.open {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.nav-mobile a {
  text-decoration: none;
  font-size: 0.9rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-primary);
  padding: 0.4rem 0;
  border-bottom: 1px solid rgba(212, 168, 75, 0.12);
}

.wrapper {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem;
}

.narrow-wrapper {
  max-width: 72ch;
  margin: 0 auto;
}

h1, h2, h3, h4 {
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.25;
  margin-top: 0;
}

h1 {
  font-size: 2.35rem;
  letter-spacing: 0.02em;
  margin-bottom: 1rem;
}

h2 {
  font-size: 1.65rem;
  margin-top: 2.2rem;
  margin-bottom: 1rem;
  border-left: 3px solid var(--accent-primary);
  padding-left: 0.75rem;
}

h3 {
  font-size: 1.2rem;
  margin-top: 1.4rem;
  margin-bottom: 0.6rem;
  color: var(--accent-secondary);
}

.eyebrow {
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--accent-primary);
  margin-bottom: 0.5rem;
  display: block;
}

p {
  margin-top: 0;
  margin-bottom: 1.25rem;
}

.hero {
  position: relative;
  background: var(--bg-surface-trans);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  padding: 2.5rem 2rem;
  margin-bottom: 3.5rem;
  box-shadow: var(--shadow-elevation);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 2.5rem;
  align-items: center;
}

.hero-images-stack {
  position: relative;
  min-height: 380px;
}

.hero-img {
  position: absolute;
  object-fit: cover;
  box-shadow: var(--shadow-elevation);
  transition: transform 0.4s ease;
}

.hero-img-1 {
  width: 72%;
  height: 220px;
  top: 0;
  left: 0;
  z-index: 1;
}

.hero-img-2 {
  width: 68%;
  height: 200px;
  top: 70px;
  right: 0;
  z-index: 2;
  border-color: var(--border-strong);
}

.hero-img-3 {
  width: 70%;
  height: 210px;
  bottom: 0;
  left: 14%;
  z-index: 3;
}

.hero-img:hover {
  transform: translateY(-4px) scale(1.02);
  z-index: 4;
}

.btn-primary {
  display: inline-block;
  background: transparent;
  color: var(--accent-primary);
  border: 1px solid var(--accent-primary);
  border-radius: var(--radius);
  padding: 0.75rem 1.6rem;
  font-size: 0.82rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  text-decoration: none;
  font-weight: 600;
  transition: background 0.25s ease, color 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
}

.btn-primary:hover, .btn-primary:focus {
  background: var(--accent-primary);
  color: #17111a;
  transform: translateY(-2px);
  box-shadow: var(--glow-accent);
}

.bento-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 1.5rem;
  margin: 2rem 0;
}

.bento-card {
  background: var(--bg-surface-trans);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  padding: 1.6rem;
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.bento-card:hover {
  transform: translateY(-3px);
  border-color: var(--border-strong);
  box-shadow: var(--shadow-elevation), var(--glow-accent);
}

.col-12 { grid-column: span 12; }
.col-8 { grid-column: span 8; }
.col-7 { grid-column: span 7; }
.col-6 { grid-column: span 6; }
.col-5 { grid-column: span 5; }
.col-4 { grid-column: span 4; }

.evidence-tag {
  display: inline-block;
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius);
  margin-bottom: 0.75rem;
  border: 1px solid currentColor;
}

.ev-robust {
  color: #8ed689;
  background: rgba(142, 214, 137, 0.1);
}

.ev-emerging {
  color: var(--accent-secondary);
  background: rgba(230, 197, 117, 0.1);
}

.ev-variable {
  color: #e59885;
  background: rgba(229, 152, 133, 0.1);
}

.card-media {
  margin-top: 1rem;
  margin-bottom: 1rem;
  overflow: hidden;
  border-radius: var(--radius);
}

.card-media img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.bento-card:hover .card-media img {
  transform: scale(1.03);
}

.freq-diagram {
  background: #251c28;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  padding: 1.25rem;
  margin: 1.5rem 0;
  font-size: 0.88rem;
}

.freq-bar-group {
  margin-bottom: 0.85rem;
}

.freq-label {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 0.25rem;
}

.freq-bar {
  height: 8px;
  background: #3c3040;
  border-radius: var(--radius);
  overflow: hidden;
}

.freq-fill {
  height: 100%;
  background: var(--accent-primary);
}

.faq-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  margin-bottom: 1rem;
  padding: 1.25rem 1.5rem;
}

.faq-card h3 {
  margin-top: 0;
  font-size: 1.05rem;
  color: var(--accent-secondary);
}

.research-callout {
  background: rgba(212, 168, 75, 0.08);
  border-left: 3px solid var(--accent-primary);
  padding: 1.25rem 1.5rem;
  margin: 1.8rem 0;
  font-style: normal;
}

.research-callout cite {
  display: block;
  font-size: 0.82rem;
  color: var(--accent-primary);
  margin-top: 0.5rem;
  font-style: normal;
  letter-spacing: 0.05em;
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-size: 0.82rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 0.4rem;
  color: var(--accent-secondary);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  background: #281f2b;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  padding: 0.75rem 1rem;
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.95rem;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 2px rgba(212, 168, 75, 0.2);
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 1.5rem;
}

.output-box {
  background: #1a131e;
  border: 1px dashed var(--border-strong);
  padding: 1rem;
  margin-top: 1.5rem;
  font-size: 0.88rem;
  white-space: pre-wrap;
  color: var(--text-muted);
  display: none;
}

.site-footer {
  background: #17111a;
  border-top: 1px solid var(--border-subtle);
  padding: 3rem 1.5rem 2rem;
  margin-top: 4rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 2.5rem;
  margin-bottom: 2.5rem;
}

.footer-nav {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer-nav a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.footer-nav a:hover {
  color: var(--accent-primary);
}

.footer-bottom {
  max-width: 1200px;
  margin: 0 auto;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(212, 168, 75, 0.15);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.reveal-on-scroll {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.65s cubic-bezier(0.16, 1, 0.3, 1), transform 0.65s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal-on-scroll.reveal-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 900px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
  .hero-images-stack {
    min-height: 280px;
    margin-top: 1.5rem;
  }
  .col-8, .col-7, .col-6, .col-5, .col-4 {
    grid-column: span 12;
  }
  .footer-inner {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-desktop {
    display: none;
  }
  .mobile-menu-btn {
    display: block;
  }
  .bento-grid {
    grid-template-columns: 1fr;
  }
  .col-12 {
    grid-column: 1 / -1;
  }
}

@media (prefers-reduced-motion: reduce){*,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}