:root {
    --bg-primary: #040d1a;
    --bg-secondary: #071526;
    --bg-card: #0a1e35;
    --bg-card-hover: #0d2540;
    --accent-cyan: #00c8e0;
    --accent-blue: #1a7fd4;
    --accent-green: #00e57a;
    --accent-orange: #ff6b35;
    --accent-yellow: #ffd166;
    --text-primary: #e8f4ff;
    --text-secondary: #7ba7cc;
    --text-muted: #3d6080;
    --border: rgba(0,200,224,0.15);
    --border-bright: rgba(0,200,224,0.4);
    --glow: 0 0 20px rgba(0,200,224,0.2);
    --glow-strong: 0 0 40px rgba(0,200,224,0.4);
  }

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

  body {
    font-family: 'IBM Plex Sans', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    overflow-x: hidden;
  }

  /* GRID BACKGROUND */
  body::before {
    content: '';
    position: fixed;
    inset: 0;
    background-image:
      linear-gradient(rgba(0,200,224,0.03) 1px, transparent 1px),
      linear-gradient(90deg, rgba(0,200,224,0.03) 1px, transparent 1px);
    background-size: 40px 40px;
    pointer-events: none;
    z-index: 0;
  }

  /* NAV */
  nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1000;
    background: rgba(4,13,26,0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    padding: 0 40px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
  }

  .nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: 'Rajdhani', sans-serif;
    font-weight: 700;
    font-size: 1.4rem;
    color: var(--text-primary);
    text-decoration: none;
    cursor: pointer;
  }

  .nav-logo svg { width: 32px; height: 32px; }

  .nav-links {
    display: flex;
    gap: 8px;
    list-style: none;
  }

  .nav-links a {
    font-family: 'Michroma', 'Segoe UI', sans-serif;
    font-size: 0.72rem;
    color: var(--text-secondary);
    text-decoration: none;
    padding: 6px 14px;
    border-radius: 3px;
    border: 1px solid transparent;
    transition: all 0.2s ease;
    line-height: 1.2;
    cursor: pointer;
    letter-spacing: 0.05em;
    text-transform: uppercase;
  }

  .nav-links a:hover, .nav-links a.active {
    color: var(--accent-cyan);
    border-color: var(--border-bright);
    background: rgba(0,200,224,0.05);
  }

  /* PAGES */
  .page {
    display: none;
    min-height: 100vh;
    padding-top: 64px;
    position: relative;
    z-index: 1;
  }
  .page.active { display: block; }

  /* HERO */
.hero {
  min-height: calc(100vh - 64px);
  display: flex;
  align-items: flex-start;
  padding: 80px 60px;
  position: relative;
  overflow: hidden;
}

  .hero-bg-net {
    position: absolute;
    right: -60px; top: 50%;
    transform: translateY(-50%);
    width: 55%;
    opacity: 0.12;
    pointer-events: none;
  }

  .hero-content {
    max-width: 680px;
    position: relative;
    z-index: 2;
  }

  .hero-tag {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.72rem;
    color: var(--accent-cyan);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    gap: 10px;
  }

  .hero-tag::before {
    content: '';
    display: block;
    width: 30px;
    height: 1px;
    background: var(--accent-cyan);
  }

  h1 {
    font-family: 'Rajdhani', sans-serif;
    font-weight: 700;
    font-size: clamp(2.8rem, 5vw, 4.2rem);
    line-height: 1.05;
    color: var(--text-primary);
    margin-bottom: 24px;
  }

  h1 span { color: var(--accent-cyan); }

  .hero-sub {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 40px;
    font-weight: 300;
    max-width: 520px;
  }

  .hero-cta {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
  }

  .btn-primary {
    background: var(--accent-cyan);
    color: var(--bg-primary);
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.78rem;
    font-weight: 500;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    padding: 14px 28px;
    border: none;
    border-radius: 3px;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
    display: inline-block;
  }
  .btn-primary:hover {
    background: #fff;
    box-shadow: var(--glow-strong);
  }

  .btn-outline {
    background: transparent;
    color: var(--accent-cyan);
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.78rem;
    font-weight: 500;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    padding: 13px 28px;
    border: 1px solid var(--border-bright);
    border-radius: 3px;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
    display: inline-block;
  }
  .btn-outline:hover {
    background: rgba(0,200,224,0.08);
    border-color: var(--accent-cyan);
  }

  /* STATS BAR */
  .stats-bar {
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    background: rgba(10,30,53,0.6);
    padding: 24px 60px;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
  }

  .stat-item {
    text-align: center;
    padding: 8px 20px;
    border-right: 1px solid var(--border);
  }
  .stat-item:last-child { border-right: none; }

  .stat-num {
    font-family: 'Rajdhani', sans-serif;
    font-weight: 700;
    font-size: 2.2rem;
    color: var(--accent-cyan);
    line-height: 1;
    margin-bottom: 6px;
  }

  .stat-label {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.68rem;
    color: var(--text-muted);
    letter-spacing: 0.12em;
    text-transform: uppercase;
  }

  /* SECTIONS */
  section {
    padding: 80px 60px;
    position: relative;
    z-index: 1;
  }

  .section-label {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.68rem;
    color: var(--accent-cyan);
    letter-spacing: 0.2em;
    text-transform: uppercase;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 10px;
  }
  .section-label::before {
    content: '';
    display: block;
    width: 20px;
    height: 1px;
    background: var(--accent-cyan);
  }

  h2 {
    font-family: 'Rajdhani', sans-serif;
    font-weight: 700;
    font-size: clamp(1.8rem, 3vw, 2.6rem);
    margin-bottom: 16px;
    color: var(--text-primary);
  }

  h2 span { color: var(--accent-cyan); }

  .section-intro {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.7;
    max-width: 680px;
    margin-bottom: 56px;
    font-weight: 300;
  }

  /* MODULE CARDS on home */
  .module-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2px;
    background: var(--border);
    border: 1px solid var(--border);
    border-radius: 6px;
    overflow: hidden;
  }

  .module-card {
    background: var(--bg-card);
    padding: 40px;
    cursor: pointer;
    transition: all 0.25s;
    position: relative;
    overflow: hidden;
  }

  .module-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--module-color), transparent);
    opacity: 0;
    transition: opacity 0.3s;
  }

  .module-card:hover { background: var(--bg-card-hover); }
  .module-card:hover::before { opacity: 1; }

  .module-icon {
    width: 44px;
    height: 44px;
    border-radius: 8px;
    background: rgba(0,200,224,0.08);
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    font-size: 1.3rem;
  }

  .module-name {
    font-family: 'Rajdhani', sans-serif;
    font-weight: 700;
    font-size: 1.4rem;
    color: var(--text-primary);
    margin-bottom: 8px;
  }

  .module-tagline {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.7rem;
    color: var(--accent-cyan);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 16px;
  }

  .module-desc {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.65;
    margin-bottom: 24px;
    font-weight: 300;
  }

  .module-metrics {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
  }

  .metric-pill {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.65rem;
    padding: 5px 10px;
    border-radius: 2px;
    border: 1px solid var(--border);
    color: var(--text-muted);
    letter-spacing: 0.08em;
    background: rgba(0,200,224,0.03);
  }

  .module-arrow {
    position: absolute;
    right: 40px;
    bottom: 40px;
    color: var(--text-muted);
    font-size: 1.2rem;
    transition: all 0.2s;
  }
  .module-card:hover .module-arrow {
    color: var(--accent-cyan);
    transform: translateX(4px);
  }

  /* LIFECYCLE */
  .lifecycle {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
  }

  .lifecycle-flow {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
    margin-top: 0;
    position: relative;
  }

  .lifecycle-flow::before {
    content: '';
    position: absolute;
    top: 32px;
    left: 12.5%;
    right: 12.5%;
    height: 1px;
    background: linear-gradient(90deg, var(--accent-cyan), var(--accent-blue), var(--accent-cyan));
    opacity: 0.4;
  }

  .lc-step {
    text-align: center;
    padding: 0 24px;
    position: relative;
  }

  .lc-dot {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    border: 2px solid var(--accent-cyan);
    background: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-family: 'Rajdhani', sans-serif;
    font-weight: 700;
    font-size: 0.8rem;
    color: var(--accent-cyan);
    letter-spacing: 0.1em;
    position: relative;
    z-index: 1;
    box-shadow: var(--glow);
  }

  .lc-title {
    font-family: 'Rajdhani', sans-serif;
    font-weight: 700;
    font-size: 1.05rem;
    color: var(--text-primary);
    margin-bottom: 8px;
  }

  .lc-sub {
    font-size: 0.82rem;
    color: var(--text-secondary);
    line-height: 1.6;
  }

  /* COMPARISON TABLE */
  .compare-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-top: 40px;
  }

  .compare-box {
    padding: 32px;
    border-radius: 4px;
    border: 1px solid var(--border);
  }

  .compare-box.old {
    background: rgba(255,107,53,0.04);
    border-color: rgba(255,107,53,0.2);
  }

  .compare-box.new {
    background: rgba(0,200,224,0.04);
    border-color: var(--border-bright);
  }

  .compare-box h3 {
    font-family: 'Rajdhani', sans-serif;
    font-size: 1.1rem;
    margin-bottom: 24px;
    padding-bottom: 14px;
    border-bottom: 1px solid currentColor;
    opacity: 0.6;
  }

  .compare-box.old h3 { color: var(--accent-orange); }
  .compare-box.new h3 { color: var(--accent-cyan); }

  .compare-row {
    display: flex;
    gap: 14px;
    align-items: flex-start;
    margin-bottom: 16px;
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.5;
  }

  .compare-row .icon { flex-shrink: 0; margin-top: 1px; }

  /* ===========================
     MODULE PAGES
  =========================== */
  .module-hero {
    padding: 80px 60px 60px;
    border-bottom: 1px solid var(--border);
    position: relative;
    overflow: hidden;
  }

  .module-hero-bg {
    position: absolute;
    right: 0; top: 0; bottom: 0;
    width: 40%;
    opacity: 0.06;
    background: radial-gradient(ellipse at right center, var(--accent-cyan), transparent 70%);
    pointer-events: none;
  }

  .module-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.68rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    padding: 6px 14px;
    border: 1px solid var(--border-bright);
    border-radius: 2px;
    color: var(--accent-cyan);
    background: rgba(0,200,224,0.05);
    margin-bottom: 24px;
  }

  .module-page-title {
    font-family: 'Rajdhani', sans-serif;
    font-weight: 700;
    font-size: clamp(2.2rem, 4vw, 3.2rem);
    margin-bottom: 16px;
    line-height: 1.1;
  }

  .module-page-sub {
    font-size: 1rem;
    color: var(--text-secondary);
    max-width: 600px;
    line-height: 1.7;
    font-weight: 300;
    margin-bottom: 40px;
  }

  .kpi-row {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
  }

  .kpi-chip {
    padding: 10px 20px;
    border: 1px solid var(--border);
    border-radius: 3px;
    background: var(--bg-card);
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.72rem;
  }

  .kpi-chip .kv { color: var(--accent-cyan); font-weight: 500; margin-right: 8px; }
  .kpi-chip .kl { color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.08em; font-size: 0.65rem; }

  /* FEATURES GRID */
  .features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2px;
    background: var(--border);
    border: 1px solid var(--border);
    border-radius: 6px;
    overflow: hidden;
    margin-top: 40px;
  }

  .feature-card {
    background: var(--bg-card);
    padding: 32px;
    position: relative;
  }

  .feature-icon {
    font-size: 1.6rem;
    margin-bottom: 16px;
    display: block;
  }

  .feature-title {
    font-family: 'Rajdhani', sans-serif;
    font-weight: 600;
    font-size: 1.05rem;
    color: var(--text-primary);
    margin-bottom: 10px;
  }

  .feature-desc {
    font-size: 0.84rem;
    color: var(--text-secondary);
    line-height: 1.65;
    font-weight: 300;
  }

  /* TECH DETAILS */
  .tech-section {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    padding: 60px;
  }

  .tech-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
    margin-top: 32px;
  }

  .tech-table th {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.65rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-muted);
    text-align: left;
    padding: 12px 20px;
    border-bottom: 1px solid var(--border);
    background: rgba(0,200,224,0.03);
  }

  .tech-table td {
    padding: 14px 20px;
    border-bottom: 1px solid rgba(0,200,224,0.05);
    color: var(--text-secondary);
    vertical-align: top;
    line-height: 1.6;
  }

  .tech-table tr:hover td { background: rgba(0,200,224,0.02); }

  .tech-table td:first-child {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.78rem;
    color: var(--accent-cyan);
    white-space: nowrap;
    width: 200px;
  }

  /* USE CASES */
  .use-cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-top: 40px;
  }

  .use-case-card {
    padding: 28px;
    border: 1px solid var(--border);
    border-radius: 4px;
    background: var(--bg-card);
    transition: border-color 0.2s;
  }

  .use-case-card:hover { border-color: var(--border-bright); }

  .uc-role {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.65rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--accent-cyan);
    margin-bottom: 12px;
    padding: 4px 8px;
    border: 1px solid var(--border);
    display: inline-block;
    border-radius: 2px;
  }

  .uc-text {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.65;
    font-weight: 300;
  }

  /* OUTPUTS */
  .outputs-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-top: 32px;
  }

  .output-item {
    display: flex;
    gap: 14px;
    padding: 20px;
    border: 1px solid var(--border);
    border-radius: 4px;
    background: rgba(0,200,224,0.02);
    align-items: flex-start;
  }

  .output-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--accent-cyan);
    flex-shrink: 0;
    margin-top: 5px;
    box-shadow: 0 0 8px var(--accent-cyan);
  }

  .output-text {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.6;
  }

  /* STATUS MOCKUP */
  .mockup-panel {
    background: #040d1a;
    border: 1px solid rgba(0,200,224,0.3);
    border-radius: 6px;
    overflow: hidden;
    font-family: 'IBM Plex Mono', monospace;
  }

  .mockup-header {
    background: rgba(0,200,224,0.06);
    padding: 10px 16px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.7rem;
    color: var(--text-muted);
    letter-spacing: 0.1em;
    text-transform: uppercase;
  }

  .mockup-dot { width: 8px; height: 8px; border-radius: 50%; }

  .gauge-row {
    display: flex;
    gap: 0;
    padding: 24px;
    flex-wrap: wrap;
  }

  .gauge {
    flex: 1;
    min-width: 100px;
    text-align: center;
    padding: 12px;
  }

  .gauge-ring {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    border: 3px solid;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 10px;
    flex-direction: column;
  }

  .gauge-val {
    font-size: 1.2rem;
    font-weight: 500;
    line-height: 1;
  }

  .gauge-label {
    font-size: 0.55rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-top: 8px;
  }

  /* DIVIDER */
  .section-divider {
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-bright), transparent);
    margin: 0 60px;
  }

  /* FOOTER */
  footer {
    border-top: 1px solid var(--border);
    padding: 40px 60px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
    z-index: 1;
  }

  .footer-logo {
    font-family: 'Rajdhani', sans-serif;
    font-weight: 700;
    font-size: 1.2rem;
    color: var(--text-primary);
  }

  .footer-tag {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.68rem;
    color: var(--text-muted);
    letter-spacing: 0.1em;
  }

  .footer-right {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.65rem;
    color: var(--text-muted);
    text-align: right;
    line-height: 1.8;
  }

  /* HIGHLIGHT BOX */
  .highlight-box {
    border: 1px solid var(--border-bright);
    background: rgba(0,200,224,0.04);
    border-radius: 4px;
    padding: 24px 32px;
    margin-top: 40px;
    display: flex;
    gap: 16px;
    align-items: flex-start;
  }

  .highlight-box .icon { font-size: 1.4rem; flex-shrink: 0; }

  .highlight-box p {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.7;
  }

  .highlight-box strong { color: var(--accent-cyan); font-weight: 500; }

  /* ALERT STATES */
  .badge-ok { color: var(--accent-green); font-size: 0.65rem; padding: 3px 8px; border: 1px solid rgba(0,229,122,0.3); border-radius: 2px; font-family: 'IBM Plex Mono', monospace; }
  .badge-warn { color: var(--accent-yellow); font-size: 0.65rem; padding: 3px 8px; border: 1px solid rgba(255,209,102,0.3); border-radius: 2px; font-family: 'IBM Plex Mono', monospace; }
  .badge-crit { color: var(--accent-orange); font-size: 0.65rem; padding: 3px 8px; border: 1px solid rgba(255,107,53,0.3); border-radius: 2px; font-family: 'IBM Plex Mono', monospace; }

  /* TWO-COL LAYOUT */
  .two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: start; }
  .two-col-3-2 { display: grid; grid-template-columns: 3fr 2fr; gap: 40px; align-items: start; }

  /* LIST ITEMS */
  .check-list { list-style: none; margin-top: 20px; }
  .check-list li {
    padding: 10px 0;
    border-bottom: 1px solid rgba(0,200,224,0.06);
    font-size: 0.88rem;
    color: var(--text-secondary);
    display: flex;
    gap: 12px;
    align-items: flex-start;
    line-height: 1.6;
  }
  .check-list li::before {
    content: '→';
    color: var(--accent-cyan);
    font-family: 'IBM Plex Mono', monospace;
    flex-shrink: 0;
    font-size: 0.75rem;
    margin-top: 2px;
  }

  /* PAGE INTRO STRIPE */
  .intro-stripe {
    background: rgba(26,127,212,0.06);
    border-bottom: 1px solid var(--border);
    padding: 20px 60px;
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.72rem;
    color: var(--text-muted);
    letter-spacing: 0.06em;
    display: flex;
    gap: 40px;
    align-items: center;
  }

  .breadcrumb span { color: var(--accent-cyan); }

  @keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
  }

  .page.active .hero-content,
  .page.active .module-hero > * {
    animation: fadeInUp 0.5s ease forwards;
  }

  /* Scrollbar */
  ::-webkit-scrollbar { width: 6px; }
  ::-webkit-scrollbar-track { background: var(--bg-primary); }
  ::-webkit-scrollbar-thumb { background: var(--text-muted); border-radius: 3px; }

@keyframes typingDot {
  0%, 60%, 100% { opacity: 0.2; transform: scale(0.8); }
  30% { opacity: 1; transform: scale(1); }
}

/* ============================================================
   RESPONSIVE / MOBILE
   ============================================================ */

/* Hamburger button (hidden on desktop) */
.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 8px; margin-left: auto; }
.nav-toggle span {
  display: block; width: 24px; height: 2px; margin: 5px 0;
  background: var(--accent-cyan); border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.2s ease;
}

/* ---- Tablet / large phone: collapse nav to hamburger, trim padding ---- */
@media (max-width: 920px) {
  nav { padding: 0 20px; }
  .nav-toggle { display: block; }

  .nav-links {
    position: fixed;
    top: 64px; left: 0; right: 0;
    flex-direction: column;
    gap: 0;
    background: rgba(4, 13, 26, 0.98);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
  }
  nav.menu-open .nav-links { max-height: calc(100vh - 64px); overflow-y: auto; }
  .nav-links li { width: 100%; }
  .nav-links a {
    display: block;
    padding: 16px 24px;
    border: none;
    border-bottom: 1px solid var(--border);
    border-radius: 0;
    font-size: 0.8rem;
  }
  nav.menu-open .nav-toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  nav.menu-open .nav-toggle span:nth-child(2) { opacity: 0; }
  nav.menu-open .nav-toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  /* Trim big horizontal paddings */
  .hero { padding: 48px 20px; min-height: auto; }
  section { padding: 56px 20px; }
  .stats-bar { padding: 20px; }
  .module-hero { padding: 56px 20px 40px; }
  .tech-section { padding: 48px 20px; }
  .intro-stripe { padding: 16px 20px; gap: 16px; flex-wrap: wrap; }
  .section-divider { margin: 0 20px; }
  footer { padding: 32px 20px; flex-direction: column; gap: 16px; align-items: flex-start; }
  .footer-right { text-align: left; }

  /* Ease dense grids one step */
  .lifecycle-flow { grid-template-columns: repeat(2, 1fr); gap: 36px 16px; }
  .lifecycle-flow::before { display: none; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .use-cases-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ---- Phone: single column everywhere ---- */
@media (max-width: 768px) {
  .module-grid,
  .features-grid,
  .use-cases-grid,
  .outputs-grid,
  .compare-grid,
  .lifecycle-flow { grid-template-columns: 1fr; }
  .two-col, .two-col-3-2 { grid-template-columns: 1fr; gap: 28px; }

  .stats-bar { grid-template-columns: repeat(2, 1fr); gap: 20px 0; }
  .stat-item { border-right: none; }

  /* Blanket overrides for the site's many INLINE layouts */
  [style*="grid-template-columns"] { grid-template-columns: 1fr !important; }
  [style*="display:flex"], [style*="display: flex"] { flex-wrap: wrap; }

  /* Wide tables scroll horizontally instead of overflowing the page */
  .tech-table { display: block; overflow-x: auto; -webkit-overflow-scrolling: touch; }
  .tech-table td:first-child { width: auto; }

  .module-card { padding: 28px 24px; }
  .module-arrow { display: none; }
  .section-intro, .module-page-sub, .hero-sub { max-width: 100%; }
}

/* ---- Small phone ---- */
@media (max-width: 480px) {
  .stats-bar { grid-template-columns: 1fr 1fr; }
  .hero-cta { flex-direction: column; align-items: stretch; }
  .hero-cta .btn-primary, .hero-cta .btn-outline { width: 100%; text-align: center; }
  h1 { font-size: clamp(2.1rem, 9vw, 2.8rem); }
  .compare-box, .feature-card, .use-case-card, .module-card, .tech-section { padding: 24px 18px; }
  section, .hero, .module-hero { padding-left: 16px; padding-right: 16px; }
}