:root {
  --bg: #fdfcf9;
  --bg-subtle: #f7f5f0;
  --card-bg: #ffffff;
  --accent: #2d4a3e; /* Deep Forest Green - Classy */
  --accent-light: #56736a;
  --accent-gold: #c5a358;
  --text-main: #1a1a1a;
  --text-muted: #595959;
  --border: #e8e4db;
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
  --shadow-hover: 0 10px 30px rgba(0, 0, 0, 0.08);
  --font-serif: "DM Serif Display", serif;
  --font-sans: "Inter", sans-serif;
  --font-mono: "JetBrains Mono", monospace;

  /* Status Colors */
  --known: #2d4a3e;
  --revision: #c5a358;
  --unknown: #a34a3e;
}

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

body {
  background: var(--bg);
  color: var(--text-main);
  font-family: var(--font-sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 40px;
  width: 100%;
}

main {
  flex: 1;
}

/* Navbar */
.navbar_wrapper {
  border-bottom: 1px solid var(--border);
  background: var(--bg);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
}

.brand_mark {
  color: var(--text-main);
  text-decoration: none;
  font-family: var(--font-serif);
  font-size: 1.75rem;
  letter-spacing: -0.01em;
}

.nav_links {
  display: flex;
  gap: 32px;
  align-items: center;
}

.nav_link {
  text-decoration: none;
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s ease;
}

.nav_link:hover {
  color: var(--accent);
}

.nav_cta {
  background: var(--accent);
  color: white;
  border: none;
  padding: 10px 20px;
  border-radius: 6px;
  cursor: pointer;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 600;
  transition: transform 0.2s ease, background 0.2s ease;
}

.nav_cta:hover {
  background: var(--accent-light);
  transform: translateY(-1px);
}

.menu_toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--border);
  padding: 8px;
  border-radius: 6px;
  cursor: pointer;
}

.menu_line {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--accent);
  margin: 4px 0;
  transition: 0.3s;
}

@media (max-width: 768px) {
  .menu_toggle {
    display: block;
  }

  .nav_links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--card-bg);
    padding: 24px;
    border: 1px solid var(--border);
    border-radius: 12px;
    box-shadow: var(--shadow-hover);
    z-index: 1000;
    gap: 20px;
  }

  .navbar.nav_open .nav_links {
    display: flex;
  }
}

/* Hero Section */
.hero_section {
  padding: 100px 0 60px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero_content {
  max-width: 800px;
  margin-bottom: 40px;
}

.hero_kicker {
  text-transform: uppercase;
  letter-spacing: 0.15em;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent-gold);
  margin-bottom: 24px;
}

.hero_title {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: clamp(3rem, 6vw, 5rem);
  line-height: 1.1;
  color: var(--text-main);
  margin-bottom: 28px;
}

.hero_subtitle {
  max-width: 54ch;
  color: var(--text-muted);
  font-size: 1.2rem;
  line-height: 1.7;
  margin: 0 auto 48px;
}

.sr_only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

.hero_search {
  display: flex;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 8px;
  box-shadow: 0 10px 25px rgba(0,0,0,0.05);
  width: 100%;
  max-width: 640px;
  margin: 0 auto;
  transition: all 0.3s ease;
}

.hero_search:hover {
  border-color: #d1c9bc;
  box-shadow: 0 12px 30px rgba(0,0,0,0.08);
}

.hero_search:focus-within {
  border-color: var(--accent-light);
  box-shadow: 0 15px 35px rgba(0,0,0,0.08);
}

.search_input {
  flex: 1;
  border: none;
  outline: none;
  padding: 14px 20px;
  font-size: 1.05rem;
  background: transparent;
  color: var(--text-main);
  font-family: var(--font-sans);
}

.search_input::placeholder {
  color: #a0a0a0;
}

.search_btn {
  background: var(--accent);
  color: white;
  border: none;
  padding: 0 28px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all 0.2s ease;
  font-family: var(--font-sans);
  flex-shrink: 0;
}

@media (max-width: 600px) {
  .hero_search {
    flex-direction: column;
    padding: 12px;
    gap: 12px;
  }
  .search_btn {
    padding: 14px;
    width: 100%;
  }
}

.search_btn:hover {
  background: var(--accent-light);
  transform: translateY(-1px);
}

.search_btn:active {
  transform: translateY(0);
}

/* Console Section - The USP */
.featured_console_section {
  padding: 40px 0 100px;
  background: radial-gradient(circle at center, #fbfaf7 0%, var(--bg) 100%);
}

.console_card {
  background: #1a1a1a;
  border-radius: 20px;
  padding: 32px;
  box-shadow: 0 30px 60px rgba(0,0,0,0.3), 0 0 40px rgba(45, 74, 62, 0.15);
  color: #e0e0e0;
  max-width: 1000px;
  margin: 0 auto;
  border: 1px solid rgba(255,255,255,0.08);
  transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275), box-shadow 0.4s ease;
  animation: consoleFadeIn 1s ease-out;
  position: relative;
  overflow: hidden;
}

.console_card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(86, 211, 100, 0.3), transparent);
}

@keyframes consoleFadeIn {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.console_card:hover {
  transform: translateY(-8px) scale(1.005);
  box-shadow: 0 40px 80px rgba(0,0,0,0.4), 0 0 50px rgba(45, 74, 62, 0.2);
}

.console_header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  padding-bottom: 16px;
}

.console_label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: #888;
}

.console_dots {
  display: flex;
  gap: 8px;
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}
.dot:nth-child(1) { background: #ff5f56; }
.dot:nth-child(2) { background: #ffbd2e; }
.dot:nth-child(3) { background: #27c93f; }

.console_output {
  height: 380px; /* Increased height */
  overflow-y: auto;
  font-family: var(--font-mono);
  font-size: 1rem;
  line-height: 1.7;
  margin-bottom: 24px;
}

.console_output p { margin-bottom: 8px; }
.prefix { color: #56d364; }

.console_input_row {
  display: flex;
  gap: 12px;
  border-top: 1px solid #333;
  padding-top: 16px;
  margin-top: 12px;
}

.console_prompt { color: #58a6ff; font-family: var(--font-mono); }
.console_input {
  background: transparent;
  border: none;
  outline: none;
  color: white;
  font-family: var(--font-mono);
  flex: 1;
}

.console_suggestions {
  margin-top: 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.command_chip {
  background: #2d2d2d;
  border: 1px solid #444;
  color: #bbb;
  padding: 6px 12px;
  border-radius: 6px;
  font-size: 0.75rem;
  font-family: var(--font-mono);
  cursor: pointer;
  transition: all 0.2s;
}

.command_chip:hover {
  background: #3d3d3d;
  color: white;
  border-color: #666;
}

/* Subjects Section */
.subjects_section {
  padding: 100px 0;
}

.section_heading {
  margin-bottom: 60px;
}

.section_kicker {
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent-gold);
}

.section_title {
  font-family: var(--font-serif);
  font-size: 2.2rem;
  margin-top: 12px;
  max-width: 25ch;
}

.subject_grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.subject_card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  padding: 32px;
  border-radius: 12px;
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
}

.subject_card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-hover);
  border-color: var(--accent-gold);
}

.subject_tag {
  color: var(--accent-gold);
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 16px;
}

.subject_title {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  margin-bottom: 16px;
}

.subject_text {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 24px;
  flex: 1;
}

.subject_link {
  text-decoration: none;
  color: var(--accent);
  font-weight: 600;
  font-size: 0.9rem;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.subject_link::after {
  content: "→";
  transition: transform 0.2s;
}

.subject_link:hover::after {
  transform: translateX(4px);
}

/* Features Strip */
.features_section {
  background: var(--bg-subtle);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  margin: 60px 0 140px;
}

.features_strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
}

.feature_item {
  padding: 60px 40px;
  border-right: 1px solid var(--border);
}

.feature_item:last-child {
  border-right: none;
}

.feature_item h3 {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  margin-bottom: 16px;
}

.feature_item p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* Footer */
.main_footer {
  background: var(--bg-subtle);
  padding: 80px 0 40px;
  border-top: 1px solid var(--border);
  margin-top: 120px;
}

.footer_grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 60px;
  margin-bottom: 60px;
}

.footer_brand_col h2 {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  margin-bottom: 16px;
}

.footer_desc {
  color: var(--text-muted);
  font-size: 0.9rem;
  max-width: 30ch;
}

.footer_col h4 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 24px;
  color: var(--text-main);
}

.footer_links {
  list-style: none;
}

.footer_links li {
  margin-bottom: 12px;
}

.footer_links a {
  text-decoration: none;
  color: var(--text-muted);
  font-size: 0.9rem;
  transition: color 0.2s;
}

.footer_links a:hover {
  color: var(--accent);
}

.footer_bottom {
  padding-top: 40px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* Responsive */
@media (max-width: 1024px) {
  .hero_section {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 40px;
  }
  .hero_subtitle { margin: 0 auto 40px; }
  .hero_search { margin: 0 auto; }
  .subject_grid { grid-template-columns: repeat(2, 1fr); }
  .features_strip { grid-template-columns: 1fr; }
  .feature_item { border-right: none; border-bottom: 1px solid var(--border); }
  .footer_grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 600px) {
  .subject_grid { grid-template-columns: 1fr; }
  .footer_grid { grid-template-columns: 1fr; gap: 40px; }
  .navbar { flex-direction: column; gap: 20px; }
  .nav_links { gap: 16px; font-size: 0.8rem; }
}