:root {
    --ink: #0A0C12;
    --paper: #F5F2EC;
    --gold: #C9A84C;
    --gold-light: #E8C97A;
    --steel: #1E2535;
    --slate: #2E3A52;
    --muted: #7A869A;
    --accent: #4A6FA5;
    --red: #C0392B;
    --green: #1A7A4A;
  }

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

  html { scroll-behavior: smooth; }

  body {
    background: var(--ink);
    color: var(--paper);
    font-family: 'IBM Plex Sans', sans-serif;
    font-weight: 300;
    overflow-x: hidden;
  }

  /* ── NOISE OVERLAY ── */
  body::before {
    content: '';
    position: fixed; inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.04'/%3E%3C/svg%3E");
    pointer-events: none; z-index: 9999; opacity: 0.35;
  }

  /* ── NAVIGATION ── */
  nav {
    position: fixed; top: 0; width: 100%; z-index: 100;
    display: flex; align-items: center; justify-content: space-between;
    padding: 0.8rem 3rem;
    background: rgba(10,12,18,0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(201,168,76,0.15);
  }

  .nav-logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    flex-shrink: 0;
  }
  .nav-logo-img {
    height: 44px;
    width: auto;
    transition: opacity 0.2s;
  }
  .nav-logo:hover .nav-logo-img { opacity: 0.85; }

  nav ul { list-style: none; display: flex; gap: 1.4rem; margin: 0; padding: 0; }
  nav ul a {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.65rem;
    letter-spacing: 0.08em;
    color: var(--muted);
    text-decoration: none;
    text-transform: uppercase;
    transition: color 0.2s;
    white-space: nowrap;
  }
  nav ul a:hover { color: var(--gold); }

  .nav-cta {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.65rem;
    letter-spacing: 0.08em;
    color: var(--gold);
    border: 1px solid var(--gold);
    padding: 0.45rem 1rem;
    text-decoration: none;
    text-transform: uppercase;
    transition: all 0.2s;
    white-space: nowrap;
    flex-shrink: 0;
  }
  .nav-cta:hover { background: var(--gold); color: var(--ink); }

  /* ── HERO ── */
  #hero {
    min-height: 100vh;
    display: grid; grid-template-columns: 1fr 1fr;
    align-items: center;
    padding: 8rem 4rem 4rem;
    position: relative;
    overflow: hidden;
  }

  .hero-bg {
    position: absolute; inset: 0;
    background:
      radial-gradient(ellipse 60% 60% at 70% 50%, rgba(74,111,165,0.12) 0%, transparent 70%),
      radial-gradient(ellipse 40% 80% at 20% 80%, rgba(201,168,76,0.06) 0%, transparent 60%);
  }

  .hero-grid {
    position: absolute; inset: 0;
    background-image:
      linear-gradient(rgba(201,168,76,0.04) 1px, transparent 1px),
      linear-gradient(90deg, rgba(201,168,76,0.04) 1px, transparent 1px);
    background-size: 60px 60px;
  }

  .hero-content { position: relative; z-index: 2; }

  .hero-label {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.7rem;
    letter-spacing: 0.3em;
    color: var(--gold);
    text-transform: uppercase;
    margin-bottom: 1.5rem;
    display: flex; align-items: center; gap: 1rem;
  }
  .hero-label::before {
    content: '';
    display: block; width: 2rem; height: 1px; background: var(--gold);
  }

  .hero-title {
    font-family: 'Playfair Display', serif;
    font-size: clamp(3rem, 5vw, 5rem);
    font-weight: 900;
    line-height: 1.05;
    margin-bottom: 1.5rem;
  }
  .hero-title em {
    font-style: normal;
    color: var(--gold);
  }

  .hero-subtitle {
    font-size: 1.05rem;
    color: var(--muted);
    line-height: 1.7;
    max-width: 500px;
    margin-bottom: 3rem;
  }

  .hero-actions { display: flex; gap: 1rem; align-items: center; }

  .btn-primary {
    background: var(--gold);
    color: var(--ink);
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    padding: 1rem 2rem;
    border: none; cursor: pointer; text-decoration: none;
    transition: all 0.2s;
    display: inline-block;
  }
  .btn-primary:hover { background: var(--gold-light); transform: translateY(-1px); }

  .btn-ghost {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.8rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--paper);
    text-decoration: none;
    padding: 1rem 2rem;
    border: 1px solid rgba(245,242,236,0.2);
    transition: all 0.2s;
    display: inline-block;
  }
  .btn-ghost:hover { border-color: var(--paper); }

  /* ── HERO PANEL ── */
  .hero-panel {
    position: relative; z-index: 2;
    display: flex; justify-content: flex-end;
  }

  .risk-card {
    background: rgba(30,37,53,0.9);
    border: 1px solid rgba(201,168,76,0.2);
    padding: 2.5rem;
    width: 400px;
    animation: float 6s ease-in-out infinite;
  }

  @keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
  }

  .card-header {
    display: flex; justify-content: space-between; align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid rgba(201,168,76,0.15);
  }

  .card-title {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.7rem;
    letter-spacing: 0.2em;
    color: var(--gold);
    text-transform: uppercase;
  }

  .version-badge {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.65rem;
    color: var(--muted);
    background: rgba(122,134,154,0.1);
    padding: 0.2rem 0.5rem;
    border: 1px solid rgba(122,134,154,0.2);
  }

  .rating-grid { display: flex; flex-direction: column; gap: 0.8rem; margin-bottom: 2rem; }

  .rating-row {
    display: flex; align-items: center; justify-content: space-between;
  }
  .rating-label {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.7rem;
    color: var(--muted);
    width: 100px;
  }
  .rating-bar {
    flex: 1; height: 3px;
    background: rgba(122,134,154,0.15);
    margin: 0 1rem;
    position: relative;
    overflow: hidden;
  }
  .rating-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--gold), var(--gold-light));
    animation: fillBar 2s ease-out forwards;
    width: 0;
  }

  @keyframes fillBar { to { width: var(--w); } }

  .rating-value {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.75rem;
    color: var(--paper);
    width: 35px; text-align: right;
  }

  .iqi-score {
    text-align: center;
    padding: 1.5rem;
    background: rgba(201,168,76,0.07);
    border: 1px solid rgba(201,168,76,0.2);
  }
  .iqi-value {
    font-family: 'Playfair Display', serif;
    font-size: 2.8rem;
    font-weight: 700;
    color: var(--gold);
  }
  .iqi-label {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.65rem;
    letter-spacing: 0.2em;
    color: var(--muted);
    text-transform: uppercase;
    margin-top: 0.3rem;
  }

  .card-explain {
    font-size: 0.78rem;
    color: var(--muted);
    line-height: 1.55;
    margin-top: 1.2rem;
    padding-top: 1rem;
    border-top: 1px solid rgba(201,168,76,0.1);
  }

  .status-pills {
    display: flex; gap: 0.5rem; flex-wrap: wrap; margin-top: 1.2rem;
  }
  .pill {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.6rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    padding: 0.2rem 0.6rem;
    border: 1px solid;
  }
  .pill.robuste { color: #1A7A4A; border-color: rgba(26,122,74,0.4); background: rgba(26,122,74,0.08); }
  .pill.degrade { color: #E07B39; border-color: rgba(224,123,57,0.4); background: rgba(224,123,57,0.08); }
  .pill.survit { color: #4A6FA5; border-color: rgba(74,111,165,0.4); background: rgba(74,111,165,0.08); }
  .pill.collapse { color: #C0392B; border-color: rgba(192,57,43,0.4); background: rgba(192,57,43,0.08); }
  .pill.liminal { color: var(--muted); border-color: rgba(122,134,154,0.4); background: rgba(122,134,154,0.08); }

  /* ── SECTION COMMON ── */
  section { padding: 7rem 4rem; }
  .section-label {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.65rem;
    letter-spacing: 0.35em;
    color: var(--gold);
    text-transform: uppercase;
    margin-bottom: 1rem;
  }
  .section-title {
    font-family: 'Playfair Display', serif;
    font-size: clamp(2.2rem, 4vw, 3.5rem);
    font-weight: 700;
    line-height: 1.15;
    margin-bottom: 1.5rem;
  }
  .section-lead {
    color: var(--muted);
    font-size: 1.05rem;
    line-height: 1.7;
    max-width: 580px;
  }

  /* ── PROBLEM SECTION (NEW) ── */
  #problem {
    background: var(--ink);
    border-bottom: 1px solid rgba(201,168,76,0.1);
  }

  .problem-layout {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
  }

  .problem-layout .section-lead {
    max-width: 700px;
    margin: 0 auto 3rem;
  }

  .problem-grid {
    display: grid; grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 3rem;
  }

  .problem-card {
    padding: 2rem 1.5rem;
    background: rgba(30,37,53,0.5);
    border: 1px solid rgba(201,168,76,0.1);
    text-align: left;
    transition: all 0.25s;
  }
  .problem-card:hover { border-color: rgba(201,168,76,0.3); transform: translateY(-3px); }

  .problem-icon {
    font-size: 1.6rem;
    margin-bottom: 1rem;
    display: block;
  }

  .problem-card h3 {
    font-family: 'Playfair Display', serif;
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 0.6rem;
    color: var(--paper);
  }

  .problem-card p {
    font-size: 0.88rem;
    color: var(--muted);
    line-height: 1.6;
  }

  /* ── METHOD SECTION ── */
  #method {
    background: var(--steel);
    border-top: 1px solid rgba(201,168,76,0.1);
    border-bottom: 1px solid rgba(201,168,76,0.1);
  }

  .method-layout {
    display: grid; grid-template-columns: 1fr 1.4fr; gap: 6rem; align-items: start;
  }

  .method-intro { padding-top: 0.5rem; }

  .pillars {
    display: flex; flex-direction: column; gap: 1.5rem;
    margin-top: 2.5rem;
  }

  .pillar {
    display: flex; gap: 1.5rem; align-items: flex-start;
    padding: 1.8rem;
    background: rgba(10,12,18,0.4);
    border-left: 3px solid var(--gold);
    transition: all 0.25s;
  }
  .pillar:hover { background: rgba(201,168,76,0.04); transform: translateX(4px); }

  .pillar-num {
    font-family: 'Playfair Display', serif;
    font-size: 2.5rem;
    font-weight: 900;
    color: rgba(201,168,76,0.2);
    line-height: 1;
    min-width: 45px;
  }

  .pillar-content h3 {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.8rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--gold);
    margin-bottom: 0.5rem;
  }
  .pillar-content p {
    font-size: 0.9rem;
    color: var(--muted);
    line-height: 1.6;
  }

  /* ── DIMENSIONS ── */
  .dimensions-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px;
    background: rgba(201,168,76,0.1);
    border: 1px solid rgba(201,168,76,0.1);
    margin-top: 1rem;
  }

  .dim-cell {
    background: var(--steel);
    padding: 2rem 1.5rem;
    text-align: center;
    transition: background 0.2s;
  }
  .dim-cell:hover { background: rgba(201,168,76,0.05); }

  .dim-icon {
    font-size: 1.8rem;
    margin-bottom: 0.8rem;
    display: block;
  }
  .dim-name {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.7rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--gold);
    margin-bottom: 0.4rem;
  }
  .dim-desc {
    font-size: 0.8rem;
    color: var(--muted);
    line-height: 1.5;
  }

  .formula-block {
    margin-top: 2.5rem;
    background: rgba(10,12,18,0.6);
    border: 1px solid rgba(201,168,76,0.15);
    padding: 2rem;
  }
  .formula-title {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.65rem;
    letter-spacing: 0.2em;
    color: var(--muted);
    text-transform: uppercase;
    margin-bottom: 1rem;
  }
  .formula {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 1rem;
    color: var(--gold);
    letter-spacing: 0.05em;
    margin-bottom: 0.8rem;
  }
  .formula-note {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.7rem;
    color: var(--muted);
    margin-bottom: 0.8rem;
  }
  .formula-explain {
    font-size: 0.85rem;
    color: var(--muted);
    line-height: 1.6;
    padding-top: 0.8rem;
    border-top: 1px solid rgba(201,168,76,0.1);
  }

  /* ── CASE STUDY SECTION (NEW) ── */
  #casestudy {
    background: var(--ink);
    border-bottom: 1px solid rgba(201,168,76,0.1);
    position: relative;
    overflow: hidden;
  }

  .case-glow {
    position: absolute;
    width: 700px; height: 500px;
    background: radial-gradient(ellipse, rgba(192,57,43,0.06) 0%, transparent 70%);
    top: 30%; right: -5%;
    pointer-events: none;
  }

  .case-header {
    text-align: center;
    margin-bottom: 4rem;
    position: relative; z-index: 2;
  }
  .case-header .section-lead { margin: 0 auto; }

  .case-grid {
    display: grid; grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    position: relative; z-index: 2;
  }

  .case-card {
    background: rgba(30,37,53,0.6);
    border: 1px solid rgba(201,168,76,0.12);
    padding: 2.2rem 1.8rem;
    transition: all 0.25s;
    display: flex; flex-direction: column;
  }
  .case-card:hover { border-color: rgba(201,168,76,0.35); transform: translateY(-3px); }

  .case-entity {
    font-family: 'Playfair Display', serif;
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 0.3rem;
  }

  .case-year {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.65rem;
    color: var(--muted);
    letter-spacing: 0.12em;
    margin-bottom: 1.2rem;
  }

  .case-narrative {
    font-size: 0.88rem;
    color: var(--muted);
    line-height: 1.65;
    flex: 1;
    margin-bottom: 1.5rem;
  }

  .case-signal {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.7rem;
    letter-spacing: 0.05em;
    padding: 0.8rem;
    background: rgba(10,12,18,0.5);
    border-left: 3px solid;
    margin-bottom: 1rem;
  }
  .case-signal.alert { border-color: var(--red); color: var(--red); }
  .case-signal.warning { border-color: #E07B39; color: #E07B39; }

  .case-result {
    font-size: 0.8rem;
    color: var(--paper);
    line-height: 1.5;
    padding-top: 1rem;
    border-top: 1px solid rgba(201,168,76,0.1);
  }
  .case-result strong { color: var(--gold); }

  /* ── COMPARISON ── */
  #comparison {
    background: var(--steel);
    position: relative; overflow: hidden;
    border-top: 1px solid rgba(201,168,76,0.1);
    border-bottom: 1px solid rgba(201,168,76,0.1);
  }

  .comparison-glow {
    position: absolute;
    width: 600px; height: 400px;
    background: radial-gradient(ellipse, rgba(74,111,165,0.08) 0%, transparent 70%);
    top: 50%; left: 50%; transform: translate(-50%, -50%);
    pointer-events: none;
  }

  .comparison-header { text-align: center; margin-bottom: 4rem; }
  .comparison-header .section-lead { margin: 0 auto; }

  .comp-table {
    width: 100%; border-collapse: collapse;
    position: relative; z-index: 2;
    font-size: 0.88rem;
  }

  .comp-table th {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.7rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    padding: 1.2rem 1.5rem;
    text-align: left;
    border-bottom: 2px solid rgba(201,168,76,0.2);
  }

  .comp-table th.highlight { color: var(--gold); }
  .comp-table th.dim-col { color: var(--muted); }

  .comp-table td {
    padding: 1.1rem 1.5rem;
    border-bottom: 1px solid rgba(255,255,255,0.04);
    color: var(--muted);
  }

  .comp-table tr.highlight-row td {
    background: rgba(201,168,76,0.04);
    color: var(--paper);
  }

  .comp-table td.ers-col {
    color: var(--gold);
    font-weight: 500;
  }

  .comp-table tr:hover td { background: rgba(255,255,255,0.02); }

  .check { color: #1A7A4A; }
  .cross { color: #C0392B; }
  .partial { color: #E07B39; }

  .dim-name-cell {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.75rem;
    color: var(--paper);
  }

  .comp-note {
    font-size: 0.82rem;
    color: var(--muted);
    line-height: 1.6;
    max-width: 700px;
    margin: 2.5rem auto 0;
    text-align: center;
    position: relative; z-index: 2;
  }

  /* ── RESULTS ── */
  #results {
    background: var(--ink);
    border-bottom: 1px solid rgba(201,168,76,0.1);
  }

  .results-header { margin-bottom: 4rem; }

  .stats-band {
    display: grid; grid-template-columns: repeat(4, 1fr);
    gap: 1px; background: rgba(201,168,76,0.1);
    border: 1px solid rgba(201,168,76,0.1);
    margin-bottom: 4rem;
  }

  .stat-cell {
    background: var(--ink);
    padding: 2.5rem 2rem; text-align: center;
  }

  .stat-num {
    font-family: 'Playfair Display', serif;
    font-size: 3rem;
    font-weight: 900;
    color: var(--gold);
    display: block;
    line-height: 1;
    margin-bottom: 0.5rem;
  }
  .stat-label {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.65rem;
    letter-spacing: 0.15em;
    color: var(--muted);
    text-transform: uppercase;
  }

  .category-grid {
    display: grid; grid-template-columns: repeat(5, 1fr); gap: 1rem;
  }

  .cat-card {
    padding: 1.8rem 1.2rem; text-align: center;
    border: 1px solid;
    transition: transform 0.2s;
  }
  .cat-card:hover { transform: translateY(-4px); }
  .cat-card.robuste { border-color: rgba(26,122,74,0.3); background: rgba(26,122,74,0.05); }
  .cat-card.degrade { border-color: rgba(224,123,57,0.3); background: rgba(224,123,57,0.05); }
  .cat-card.survit { border-color: rgba(74,111,165,0.3); background: rgba(74,111,165,0.05); }
  .cat-card.collapse { border-color: rgba(192,57,43,0.3); background: rgba(192,57,43,0.05); }
  .cat-card.liminal { border-color: rgba(122,134,154,0.3); background: rgba(122,134,154,0.05); }

  .cat-count {
    font-family: 'Playfair Display', serif;
    font-size: 2.5rem;
    font-weight: 700;
  }
  .robuste .cat-count { color: #1A7A4A; }
  .degrade .cat-count { color: #E07B39; }
  .survit .cat-count { color: #4A6FA5; }
  .collapse .cat-count { color: #C0392B; }
  .liminal .cat-count { color: var(--muted); }

  .cat-name {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.65rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    margin-top: 0.3rem;
  }
  .robuste .cat-name { color: #1A7A4A; }
  .degrade .cat-name { color: #E07B39; }
  .survit .cat-name { color: #4A6FA5; }
  .collapse .cat-name { color: #C0392B; }
  .liminal .cat-name { color: var(--muted); }

  .cat-desc {
    font-size: 0.78rem;
    color: var(--muted);
    margin-top: 0.5rem;
    line-height: 1.4;
  }

  .results-explain {
    font-size: 0.88rem;
    color: var(--muted);
    line-height: 1.65;
    max-width: 700px;
    margin: 3rem auto 0;
    text-align: center;
  }

  /* ── RIGUEUR ── */
  #rigor {
    padding: 6rem 4rem;
    background: linear-gradient(180deg, rgba(10,12,18,0.95) 0%, rgba(30,37,53,0.6) 100%);
    border-top: 1px solid rgba(201,168,76,0.1);
  }

  .rigor-header {
    text-align: center;
    max-width: 680px;
    margin: 0 auto 4rem;
  }

  .rigor-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    max-width: 1100px;
    margin: 0 auto 4rem;
  }

  .rigor-card {
    background: rgba(10,12,18,0.6);
    border: 1px solid rgba(201,168,76,0.12);
    padding: 2.5rem 2rem;
    transition: border-color 0.3s;
  }
  .rigor-card:hover {
    border-color: rgba(201,168,76,0.35);
  }

  .rigor-num {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 2rem;
    font-weight: 600;
    color: var(--gold);
    margin-bottom: 0.8rem;
    letter-spacing: 0.05em;
  }

  .rigor-title {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--paper);
    margin-bottom: 1rem;
  }

  .rigor-desc {
    font-family: 'IBM Plex Sans', sans-serif;
    font-size: 0.85rem;
    color: var(--muted);
    line-height: 1.6;
  }

  .rigor-cta {
    text-align: center;
    max-width: 640px;
    margin: 0 auto;
  }
  .rigor-cta p {
    font-family: 'IBM Plex Sans', sans-serif;
    font-size: 0.85rem;
    color: var(--muted);
    line-height: 1.7;
    margin-bottom: 2rem;
    font-style: italic;
  }
  .rigor-btn {
    display: inline-block;
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--ink);
    background: var(--gold);
    padding: 1rem 2.5rem;
    text-decoration: none;
    transition: background 0.2s;
  }
  .rigor-btn:hover {
    background: var(--gold-light);
  }

  /* ── CONTACT ── */
  #contact {
    background: var(--steel);
    position: relative; overflow: hidden;
    border-top: 1px solid rgba(201,168,76,0.1);
  }

  .contact-layout {
    display: grid; grid-template-columns: 1fr 1.2fr; gap: 6rem; align-items: start;
  }

  .contact-info { padding-top: 0.5rem; }

  .contact-features {
    display: flex; flex-direction: column; gap: 1.5rem;
    margin-top: 2.5rem;
  }

  .contact-feature {
    display: flex; gap: 1rem; align-items: flex-start;
  }

  .feat-icon {
    width: 36px; height: 36px;
    border: 1px solid rgba(201,168,76,0.3);
    display: flex; align-items: center; justify-content: center;
    font-size: 1rem;
    flex-shrink: 0;
  }

  .feat-text h4 {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.75rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--paper);
    margin-bottom: 0.2rem;
  }
  .feat-text p {
    font-size: 0.85rem;
    color: var(--muted);
    line-height: 1.5;
  }

  /* ── FORM ── */
  .contact-form {
    background: rgba(10,12,18,0.4);
    border: 1px solid rgba(201,168,76,0.15);
    padding: 3rem;
  }

  .form-title {
    font-family: 'Playfair Display', serif;
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
  }
  .form-subtitle {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.7rem;
    letter-spacing: 0.1em;
    color: var(--gold);
    text-transform: uppercase;
    margin-bottom: 2rem;
  }

  .form-group { margin-bottom: 1.5rem; }
  .form-group label {
    display: block;
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.65rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 0.5rem;
  }
  .form-group input,
  .form-group select,
  .form-group textarea {
    width: 100%;
    background: rgba(10,12,18,0.5);
    border: 1px solid rgba(122,134,154,0.2);
    color: var(--paper);
    font-family: 'IBM Plex Sans', sans-serif;
    font-size: 0.9rem;
    padding: 0.85rem 1rem;
    outline: none;
    transition: border-color 0.2s;
    appearance: none;
  }
  .form-group input:focus,
  .form-group select:focus,
  .form-group textarea:focus {
    border-color: var(--gold);
  }
  .form-group textarea { resize: vertical; min-height: 100px; }
  .form-group select option { background: var(--steel); }

  .form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }

  .form-submit {
    width: 100%;
    background: var(--gold);
    color: var(--ink);
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    padding: 1.1rem;
    border: none; cursor: pointer;
    transition: all 0.2s;
    margin-top: 0.5rem;
  }
  .form-submit:hover { background: var(--gold-light); }

  .form-note {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.65rem;
    color: var(--muted);
    margin-top: 1rem;
    text-align: center;
    line-height: 1.5;
  }

  /* ── FOOTER ── */
  footer {
    background: rgba(10,12,18,0.95);
    border-top: 1px solid rgba(201,168,76,0.1);
    padding: 3.5rem 4rem;
    display: flex; justify-content: space-between; align-items: center;
  }

  .footer-brand {
    display: flex;
    align-items: center;
    gap: 1.5rem;
  }
  .footer-logo-img {
    height: 56px;
    width: auto;
    opacity: 1;
  }
  .footer-ers {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.7rem;
    letter-spacing: 0.12em;
    color: var(--muted);
    padding-left: 1.5rem;
    border-left: 1px solid rgba(201,168,76,0.2);
  }

  .footer-copy {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.65rem;
    color: var(--muted);
    letter-spacing: 0.08em;
  }

  /* ── ANIMATIONS ── */
  .fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.7s ease, transform 0.7s ease;
  }
  .fade-in.visible {
    opacity: 1;
    transform: translateY(0);
  }

  /* ── RESPONSIVE ── */
  @media (max-width: 1200px) {
    nav { padding: 0.8rem 2rem; }
    nav ul { gap: 1rem; }
    nav ul a { font-size: 0.6rem; letter-spacing: 0.05em; }
    .nav-cta { font-size: 0.6rem; padding: 0.4rem 0.8rem; }
  }

  @media (max-width: 900px) {
    nav { padding: 0.7rem 1.5rem; }
    nav ul { display: none; }
    .nav-cta { display: none; }
    #hero { grid-template-columns: 1fr; padding: 7rem 2rem 4rem; gap: 3rem; }
    .hero-panel { justify-content: center; }
    section { padding: 5rem 2rem; }
    .method-layout, .contact-layout { grid-template-columns: 1fr; gap: 3rem; }
    .dimensions-grid { grid-template-columns: repeat(2, 1fr); }
    .category-grid { grid-template-columns: repeat(2, 1fr); }
    .stats-band { grid-template-columns: repeat(2, 1fr); }
    .form-row { grid-template-columns: 1fr; }
    .problem-grid { grid-template-columns: 1fr; }
    .case-grid { grid-template-columns: 1fr; }
    .rigor-grid { grid-template-columns: 1fr 1fr; }
    #rigor { padding: 5rem 2rem; }
    .comp-table { font-size: 0.75rem; }
    .comp-table th, .comp-table td { padding: 0.8rem 0.6rem; }
    footer { flex-direction: column; gap: 1.5rem; text-align: center; }
    .footer-brand { flex-direction: column; gap: 0.8rem; }
    .footer-ers { border-left: none; padding-left: 0; }
  }