:root {
  --bg-canvas: #3b0d1a;
  --bg-surface: #501b2b;
  --bg-surface-elevated: #622336;
  --bg-champagne: #e8d5a8;
  --text-primary: #fff7e8;
  --text-muted: #dfcfbe;
  --text-dark: #3b0d1a;
  --accent: #e8d5a8;
  --accent-hover: #f3e5c4;
  --accent-border: #c9b482;
  --border-line: rgba(232, 213, 168, 0.35);
  --border-strong: #e8d5a8;
  --shadow-hard: 4px 4px 0 #1f050d;
  --shadow-hard-hover: 1px 1px 0 #1f050d;
  --font-serif: Georgia, "Times New Roman", Times, serif;
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --ease-kinetic: cubic-bezier(0.16, 1, 0.3, 1);
}

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

body {
  background-color: var(--bg-canvas);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 1.05rem;
  line-height: 1.68;
  overflow-wrap: anywhere;
  hyphens: auto;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, .serif-font {
  font-family: var(--font-serif);
  font-weight: normal;
  line-height: 1.25;
  color: var(--text-primary);
}

h1 { font-size: clamp(2.1rem, 4vw + 1rem, 3.5rem); margin-bottom: 1.2rem; }
h2 { font-size: clamp(1.6rem, 2.5vw + 0.8rem, 2.4rem); margin-bottom: 1rem; }
h3 { font-size: clamp(1.2rem, 1.5vw + 0.5rem, 1.6rem); margin-bottom: 0.6rem; }
p { margin-bottom: 1.2rem; }
a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
a:hover { color: var(--accent-hover); }

img {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: 0;
  border: 1px solid var(--border-line);
}

.site-header {
  position: static;
  background-color: var(--bg-canvas);
  border-bottom: 2px solid var(--accent);
  padding: 1.2rem 1.5rem 0.5rem;
}

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

.brand-wrapper {
  text-align: left;
}

.brand-title {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  text-decoration: none;
  display: inline-block;
}

.brand-tagline {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  display: block;
  margin-top: 2px;
}

.menu-toggle-btn {
  display: none;
  background: var(--bg-surface);
  border: 2px solid var(--accent);
  color: var(--accent);
  font-size: 1.5rem;
  line-height: 1;
  padding: 0.4rem 0.8rem;
  cursor: pointer;
  border-radius: 0;
  box-shadow: 2px 2px 0 #1f050d;
}

.nav-container {
  max-width: 1200px;
  margin: 1.2rem auto 0.6rem;
  text-align: center;
}

.nav-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.4rem 1.5rem;
}

.nav-link {
  font-family: var(--font-serif);
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-primary);
  text-decoration: none;
  padding: 0.4rem 0.6rem;
  border-bottom: 2px solid transparent;
  transition: all 0.2s ease;
}

.nav-link:hover, .nav-link.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 3rem 1.5rem;
}

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

.band-champagne {
  background-color: var(--bg-champagne);
  color: var(--text-dark);
  padding: 3.5rem 1.5rem;
  border-top: 2px solid var(--accent-border);
  border-bottom: 2px solid var(--accent-border);
}

.band-champagne h2, .band-champagne h3, .band-champagne h1 {
  color: var(--text-dark);
}

.band-champagne a {
  color: #1f050d;
  font-weight: 600;
}

.btn-solid {
  display: inline-block;
  background-color: var(--accent);
  color: var(--text-dark);
  font-family: var(--font-serif);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  text-decoration: none;
  padding: 0.85rem 1.6rem;
  border: 2px solid var(--text-primary);
  border-radius: 0;
  box-shadow: var(--shadow-hard);
  transition: transform 0.15s var(--ease-kinetic), box-shadow 0.15s var(--ease-kinetic);
  cursor: pointer;
}

.btn-solid:hover {
  transform: translate(3px, 3px);
  box-shadow: var(--shadow-hard-hover);
  color: var(--text-dark);
}

.btn-outline {
  display: inline-block;
  background-color: transparent;
  color: var(--accent);
  font-family: var(--font-serif);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  text-decoration: none;
  padding: 0.8rem 1.4rem;
  border: 2px solid var(--accent);
  border-radius: 0;
  box-shadow: var(--shadow-hard);
  transition: transform 0.15s var(--ease-kinetic), box-shadow 0.15s var(--ease-kinetic);
  cursor: pointer;
}

.btn-outline:hover {
  transform: translate(3px, 3px);
  box-shadow: var(--shadow-hard-hover);
  background-color: var(--bg-surface);
  color: var(--accent-hover);
}

.transect-stream {
  position: relative;
  padding-left: 2rem;
  margin-top: 2.5rem;
}

.transect-stream::before {
  content: "";
  position: absolute;
  top: 15px;
  bottom: 30px;
  left: 6px;
  width: 2px;
  background: repeating-linear-gradient(to bottom, var(--accent) 0, var(--accent) 8px, transparent 8px, transparent 16px);
}

.transect-node {
  position: relative;
  margin-bottom: 4rem;
}

.transect-node::before {
  content: "";
  position: absolute;
  left: -2.35rem;
  top: 0.4rem;
  width: 14px;
  height: 14px;
  background: var(--accent);
  border: 3px solid var(--bg-canvas);
  border-radius: 0;
}

.transect-num {
  font-family: var(--font-serif);
  font-size: 0.9rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.4rem;
  display: block;
}

.hero-transect-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 2.5rem;
  align-items: center;
}

.hero-visual-frame {
  position: relative;
}

.hero-visual-frame img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.hero-fact-overlay {
  background: var(--bg-surface);
  border: 2px solid var(--accent);
  padding: 1.8rem;
  box-shadow: 6px 6px 0 #1f050d;
}

.hero-fact-overlay h3 {
  border-bottom: 1px solid var(--border-line);
  padding-bottom: 0.6rem;
  margin-bottom: 1.2rem;
}

.fact-item {
  margin-bottom: 1.2rem;
  padding-left: 1rem;
  border-left: 3px solid var(--accent);
}

.fact-item:last-child {
  margin-bottom: 0;
}

.fact-item strong {
  display: block;
  font-family: var(--font-serif);
  color: var(--accent);
}

.fact-source {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-style: italic;
  display: block;
  margin-top: 0.2rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2.5rem;
}

.habitat-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-line);
  display: flex;
  flex-direction: column;
  position: relative;
  transition: transform 0.2s var(--ease-kinetic), box-shadow 0.2s var(--ease-kinetic);
}

.habitat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hard);
  border-color: var(--accent);
}

.card-media {
  position: relative;
  overflow: hidden;
}

.card-media img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border: none;
  border-bottom: 2px solid var(--accent);
}

.card-ecosystem-tag {
  position: absolute;
  bottom: 0;
  left: 0;
  background-color: var(--accent);
  color: var(--text-dark);
  font-family: var(--font-serif);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.35rem 0.8rem;
  border-radius: 0;
}

.card-body {
  padding: 1.5rem;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.card-body p {
  color: var(--text-muted);
  font-size: 0.98rem;
  flex-grow: 1;
}

.card-meta {
  font-size: 0.85rem;
  border-top: 1px dashed var(--border-line);
  padding-top: 0.8rem;
  margin-top: 1rem;
  color: var(--text-muted);
}

.field-log-panel {
  background-color: var(--bg-surface-elevated);
  border-left: 4px solid var(--accent);
  padding: 1.5rem;
  margin: 1.5rem 0;
}

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

.faq-card h3 {
  color: var(--accent);
  margin-bottom: 0.6rem;
}

.table-wrap {
  overflow-x: auto;
  margin: 2rem 0;
}

table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

th, td {
  padding: 0.9rem 1.1rem;
  border: 1px solid var(--border-line);
}

th {
  background-color: var(--bg-surface-elevated);
  font-family: var(--font-serif);
  color: var(--accent);
}

tr:nth-child(even) td {
  background-color: rgba(255, 255, 255, 0.03);
}

.tool-box {
  background: var(--bg-surface);
  border: 2px solid var(--accent);
  padding: 2rem;
  box-shadow: var(--shadow-hard);
}

.form-group {
  margin-bottom: 1.2rem;
}

label {
  display: block;
  font-family: var(--font-serif);
  color: var(--accent);
  margin-bottom: 0.4rem;
}

input, select, textarea {
  width: 100%;
  padding: 0.8rem 1rem;
  background-color: var(--bg-canvas);
  border: 1px solid var(--accent);
  color: var(--text-primary);
  font-family: var(--font-sans);
  border-radius: 0;
  font-size: 1rem;
}

input:focus, select:focus, textarea:focus {
  outline: 2px solid var(--accent-hover);
  background-color: #2e0914;
}

.actions-row {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 1.2rem;
}

.status-msg {
  padding: 0.8rem;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--accent);
  font-size: 0.9rem;
  margin-top: 1rem;
  display: none;
}

.site-footer {
  background-color: #250710;
  border-top: 3px solid var(--accent);
  padding: 3.5rem 1.5rem 2rem;
  color: var(--text-muted);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 2.5rem;
  max-width: 1200px;
  margin: 0 auto 2.5rem;
}

.footer-col h4 {
  color: var(--accent);
  font-size: 1.2rem;
  margin-bottom: 1rem;
  letter-spacing: 0.05em;
}

.footer-col ul {
  list-style: none;
}

.footer-col li {
  margin-bottom: 0.5rem;
}

.footer-col a {
  color: var(--text-primary);
  text-decoration: none;
}

.footer-col a:hover {
  color: var(--accent);
  text-decoration: underline;
}

.footer-bottom {
  max-width: 1200px;
  margin: 0 auto;
  border-top: 1px solid rgba(232, 213, 168, 0.2);
  padding-top: 1.5rem;
  font-size: 0.9rem;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-bottom a {
  color: var(--accent);
}

.reveal-on-scroll {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.65s var(--ease-kinetic), transform 0.65s var(--ease-kinetic);
}

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

@media (max-width: 768px) {
  .menu-toggle-btn {
    display: block;
  }
  .nav-container {
    display: none;
    margin-top: 1rem;
    padding: 1rem 0;
    border-top: 1px dashed var(--border-line);
  }
  .nav-container.open {
    display: block;
  }
  .nav-list {
    flex-direction: column;
    gap: 0.8rem;
  }
  .hero-transect-grid {
    grid-template-columns: 1fr;
  }
  .transect-stream {
    padding-left: 1.2rem;
  }
  .transect-stream::before {
    left: 2px;
  }
  .transect-node::before {
    left: -1.6rem;
  }
}

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