:root {
  --bg-canvas: #1c1f24;
  --bg-surface: #252930;
  --bg-surface-hover: #2f343d;
  --text-primary: #e5e7eb;
  --text-muted: #9ca3af;
  --accent-primary: #14b8a6;
  --accent-secondary: #0d9488;
  --accent-glow: rgba(20, 184, 166, 0.25);
  --border-subtle: #374151;
  --border-focus: #14b8a6;
  --ease-kinetic: cubic-bezier(0.16, 1, 0.3, 1);
  --shadow-elevation: 0 12px 32px -4px rgba(0, 0, 0, 0.4);
  --glow-accent: 0 0 24px -4px var(--accent-primary);
  --radius-card: 20px;
}

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

body {
  background-color: var(--bg-canvas);
  color: var(--text-primary);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  line-height: 1.6;
  overflow-wrap: anywhere;
  hyphens: auto;
  border: 1px solid rgba(255, 255, 255, 0.05);
  min-height: 100vh;
}

/* System Alert Ribbon */
.sys-ribbon {
  background: #111418;
  color: var(--accent-primary);
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  padding: 6px 1.5rem;
  display: flex;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-subtle);
  font-family: monospace;
}

/* Header */
header {
  position: static;
  background: var(--bg-canvas);
  border-bottom: 1px solid var(--border-subtle);
  padding: 1.25rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-wrapper {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--text-primary);
}

.brand-logo {
  width: 32px;
  height: 32px;
  background: var(--accent-primary);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #111418;
  font-weight: 800;
  font-size: 1.1rem;
}

.brand-text {
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  text-transform: uppercase;
}

nav.desktop-nav {
  display: flex;
  gap: 1.5rem;
}

nav.desktop-nav a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 600;
  transition: color 0.2s var(--ease-kinetic);
}

nav.desktop-nav a:hover,
nav.desktop-nav a.active {
  color: var(--accent-primary);
}

.mobile-menu-btn {
  display: none;
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-size: 1.75rem;
  cursor: pointer;
  line-height: 1;
}

.mobile-nav-panel {
  display: none;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-subtle);
  padding: 1.5rem;
  flex-direction: column;
  gap: 1rem;
}

.mobile-nav-panel.open {
  display: flex;
}

.mobile-nav-panel a {
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 600;
  font-size: 1.1rem;
}

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

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

/* Kinetic Buttons */
.btn-teal {
  display: inline-block;
  background: var(--accent-primary);
  color: #111418;
  padding: 0.85rem 1.75rem;
  border-radius: 9999px;
  text-decoration: none;
  font-weight: 700;
  font-size: 0.95rem;
  border: none;
  cursor: pointer;
  transition: transform 0.2s var(--ease-kinetic), box-shadow 0.2s var(--ease-kinetic), background-color 0.2s ease;
}

.btn-teal:hover {
  background: #2dd4bf;
  transform: translateY(-3px) scale(1.02);
  box-shadow: var(--shadow-elevation), var(--glow-accent);
}

/* Hero Section */
.hero-block {
  text-align: center;
  padding: 4rem 1rem 5rem;
  position: relative;
}

.hero-tag {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 9999px;
  background: rgba(20, 184, 166, 0.15);
  color: var(--accent-primary);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
}

.hero-title {
  font-size: clamp(2rem, 5vw, 3.4rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.04em;
  margin-bottom: 1.5rem;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 68ch;
  margin: 0 auto 2.5rem;
}

/* Bento Grid System */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 1.5rem;
  margin: 3rem 0;
}

.bento-card {
  background: var(--bg-surface);
  border-radius: var(--radius-card);
  padding: 2rem;
  position: relative;
  transition: transform 0.3s var(--ease-kinetic), background-color 0.2s ease;
  border: 1px solid rgba(255, 255, 255, 0.03);
  display: flex;
  flex-direction: column;
}

.bento-card:hover {
  transform: translateY(-5px);
  background: var(--bg-surface-hover);
  box-shadow: var(--shadow-elevation);
}

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

.bento-img-wrapper {
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: 12px;
  overflow: hidden;
  margin-bottom: 1.25rem;
  background: #111418;
}

.bento-img-wrapper.square {
  aspect-ratio: 4 / 3;
}

.bento-img-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.metric-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: #111418;
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  padding: 4px 10px;
  font-size: 0.75rem;
  color: var(--accent-primary);
  font-family: monospace;
  margin-bottom: 1rem;
  width: fit-content;
}

.bento-card h2, .bento-card h3 {
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 0.75rem;
}

.bento-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

/* Accordion Component */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin: 2rem 0;
}

.faq-item {
  background: var(--bg-surface);
  border-radius: 14px;
  border: 1px solid var(--border-subtle);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  padding: 1.25rem 1.5rem;
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-weight: 700;
  text-align: left;
  font-size: 1.05rem;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-answer {
  padding: 0 1.5rem 1.25rem;
  color: var(--text-muted);
  display: none;
  font-size: 0.95rem;
}

.faq-item.active .faq-answer {
  display: block;
}

.faq-icon {
  font-family: monospace;
  font-size: 1.25rem;
  color: var(--accent-primary);
  transition: transform 0.2s ease;
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
}

/* Data Tables */
.table-container {
  overflow-x: auto;
  margin: 2rem 0;
  background: var(--bg-surface);
  border-radius: 12px;
  border: 1px solid var(--border-subtle);
}

table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.9rem;
}

th, td {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border-subtle);
}

th {
  background: #181b20;
  color: var(--accent-primary);
  font-weight: 700;
}

tr:last-child td {
  border-bottom: none;
}

/* Spec Tool Component */
.tool-box {
  background: var(--bg-surface);
  border-radius: var(--radius-card);
  padding: 2.5rem;
  border: 1px solid var(--border-subtle);
  margin: 3rem 0;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  margin-bottom: 1.5rem;
}

.input-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.input-group label {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}

.input-group input, .input-group select, .input-group textarea {
  background: #111418;
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  padding: 0.85rem 1rem;
  border-radius: 8px;
  font-family: inherit;
  font-size: 0.95rem;
}

.input-group input:focus, .input-group textarea:focus {
  outline: none;
  border-color: var(--border-focus);
}

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

.console-output {
  background: #111418;
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 1.25rem;
  font-family: monospace;
  font-size: 0.85rem;
  color: #10b981;
  white-space: pre-wrap;
  margin-top: 1.5rem;
  min-height: 120px;
}

/* Scroll Reveal */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s var(--ease-kinetic), transform 0.6s var(--ease-kinetic);
}

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

/* Footer */
footer {
  background: #111418;
  border-top: 1px solid var(--border-subtle);
  padding: 4rem 1.5rem 2.5rem;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 2.5rem;
  margin-bottom: 3rem;
}

.footer-col h4 {
  color: var(--text-primary);
  font-size: 0.95rem;
  margin-bottom: 1.25rem;
  font-weight: 700;
}

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

.footer-col ul li {
  margin-bottom: 0.75rem;
}

.footer-col a {
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

.footer-bottom {
  max-width: 1200px;
  margin: 0 auto;
  padding-top: 2rem;
  border-top: 1px solid #23272e;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
}

/* Responsive */
@media (max-width: 768px) {
  nav.desktop-nav {
    display: none;
  }
  .mobile-menu-btn {
    display: block;
  }
  .col-8, .col-6, .col-4 {
    grid-column: span 12;
  }
  .form-grid {
    grid-template-columns: 1fr;
  }
  .hero-block {
    padding: 2.5rem 0.5rem;
  }
}

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