/* CSS Variables & Theme System */
    :root {
      /* Light mode colors */
      --bg-primary: #F8F3EA;
      --bg-secondary: #EFE7DA;
      --bg-tertiary: #E7DDCF;
      --text-primary: #1E1A17;
      --text-secondary: #3F362F;
      --text-tertiary: #6E6156;
      --ember-red: #C54728;
      --ember-bright: #E06434;
      --flame-yellow: #F4B44D;
      --blue-deep: #3A3A3A;
      --blue-darker: #1E1A17;

      /* Heat interaction */
      --heat-glow: rgba(197, 71, 40, 0.25);
      --heat-bloom: rgba(244, 180, 77, 0.18);

      /* Structure */
      --space-unit: 1.5rem;
      --container-gutter: calc(var(--space-unit) * 2);
      --max-width: 1200px;
      --content-width: 860px;
      --border-subtle: rgba(63, 54, 47, 0.12);
      --border-emphasis: rgba(197, 71, 40, 0.32);
      --radius-sm: 10px;
      --radius-md: 18px;
      --radius-lg: 28px;
      --shadow-ambient: 0 20px 60px rgba(30, 26, 23, 0.12);
      --shadow-elevated: 0 30px 80px rgba(30, 26, 23, 0.18);

      /* Transitions */
      --transition-gentle: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
      --transition-heat: 0.8s cubic-bezier(0.2, 0.8, 0.3, 1);
      --transition-smooth: 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    }

    /* Light mode (when explicitly set) */
    body.light-mode {
      --bg-primary: #F8F3EA;
      --bg-secondary: #EFE7DA;
      --bg-tertiary: #E7DDCF;
      --text-primary: #1E1A17;
      --text-secondary: #3F362F;
      --text-tertiary: #6E6156;
      --ember-red: #C54728;
      --ember-bright: #E06434;
      --flame-yellow: #F4B44D;
      --blue-deep: #3A3A3A;
      --blue-darker: #1E1A17;
      --heat-glow: rgba(197, 71, 40, 0.25);
      --heat-bloom: rgba(244, 180, 77, 0.18);
      --border-subtle: rgba(63, 54, 47, 0.12);
      --border-emphasis: rgba(197, 71, 40, 0.32);
    }

    /* Dark mode - default */
    :root,
    body.dark-mode {
      --bg-primary: #0B0A08;
      --bg-secondary: #15110E;
      --bg-tertiary: #1D1713;
      --text-primary: #F5EFE6;
      --text-secondary: #CFC4B7;
      --text-tertiary: #9C9185;
      --ember-red: #FF6A3D;
      --ember-bright: #FF935C;
      --flame-yellow: #FFC857;
      --blue-deep: #433D36;
      --blue-darker: #221E1B;
      --heat-glow: rgba(255, 106, 61, 0.35);
      --heat-bloom: rgba(255, 200, 87, 0.22);
      --border-subtle: rgba(245, 239, 230, 0.08);
      --border-emphasis: rgba(255, 106, 61, 0.3);
    }

    /* Reset & Base */
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }

    body {
      background: var(--bg-primary);
      color: var(--text-primary);
      font-family: 'IBM Plex Mono', 'SFMono-Regular', Menlo, Consolas, monospace;
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
      transition: background var(--transition-gentle), color var(--transition-gentle);
      overflow-x: hidden;
      font-feature-settings: 'ss01', 'ss02', 'cv05', 'cv09';
    }

    html {
      scroll-behavior: smooth;
    }

    body::before {
      content: '';
      position: fixed;
      inset: 0;
      background:
        radial-gradient(1200px circle at 10% 10%, rgba(255, 106, 61, 0.12), transparent 60%),
        radial-gradient(900px circle at 90% 20%, rgba(255, 200, 87, 0.1), transparent 55%),
        radial-gradient(800px circle at 20% 90%, rgba(255, 147, 92, 0.08), transparent 60%),
        repeating-linear-gradient(120deg, rgba(255, 255, 255, 0.02), rgba(255, 255, 255, 0.02) 1px, transparent 1px, transparent 6px);
      z-index: 0;
      pointer-events: none;
      opacity: 0.8;
    }

    .skip-link {
      position: absolute;
      top: 1rem;
      left: 1rem;
      background: var(--bg-secondary);
      color: var(--text-primary);
      border: 1px solid var(--border-subtle);
      padding: 0.75rem 1rem;
      border-radius: 999px;
      text-decoration: none;
      transform: translateY(-200%);
      transition: transform var(--transition-smooth);
      z-index: 2000;
    }

    .skip-link:focus {
      transform: translateY(0);
    }

    .ambient-orbs {
      position: fixed;
      inset: 0;
      z-index: 1;
      pointer-events: none;
      overflow: hidden;
    }

    .orb {
      position: absolute;
      border-radius: 50%;
      filter: blur(0);
      opacity: 0.45;
      animation: float 16s ease-in-out infinite;
    }

    .orb-1 {
      width: 420px;
      height: 420px;
      background: radial-gradient(circle, rgba(255, 106, 61, 0.18), transparent 65%);
      top: -80px;
      left: -120px;
    }

    .orb-2 {
      width: 360px;
      height: 360px;
      background: radial-gradient(circle, rgba(255, 200, 87, 0.16), transparent 60%);
      top: 20%;
      right: -80px;
      animation-delay: -4s;
    }

    .orb-3 {
      width: 520px;
      height: 520px;
      background: radial-gradient(circle, rgba(255, 147, 92, 0.16), transparent 65%);
      bottom: -160px;
      left: 20%;
      animation-delay: -8s;
    }

    @keyframes float {
      0%, 100% {
        transform: translateY(0);
      }
      50% {
        transform: translateY(-18px);
      }
    }

    /* 3D Fire Canvas */
    #fire-canvas {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      pointer-events: none;
      z-index: 5;
      opacity: 0.45;
      transition: opacity 0.5s ease;
    }

    /* Theme Toggle */
    .theme-toggle {
      position: fixed;
      top: calc(var(--space-unit) * 1.5);
      right: calc(var(--space-unit) * 1.5);
      background: var(--bg-tertiary);
      border: 1px solid var(--border-subtle);
      border-radius: 50%;
      width: 3.5rem;
      height: 3.5rem;
      cursor: pointer;
      transition: all var(--transition-smooth);
      z-index: 1000;
      display: flex;
      align-items: center;
      justify-content: center;
      backdrop-filter: blur(10px);
    }

    .theme-toggle:hover {
      transform: scale(1.08);
      box-shadow: 0 8px 32px var(--heat-glow);
      border-color: var(--border-emphasis);
    }

    .theme-icon {
      position: absolute;
      font-size: 1.4rem;
      transition: opacity var(--transition-gentle), transform var(--transition-gentle);
    }

    .theme-icon.moon {
      opacity: 1;
      color: var(--blue-deep);
    }

    .theme-icon.sun {
      opacity: 0;
      transform: rotate(180deg);
      color: var(--flame-yellow);
    }

    body.dark-mode .theme-icon.moon {
      opacity: 0;
      transform: rotate(-180deg);
    }

    body.dark-mode .theme-icon.sun {
      opacity: 1;
      transform: rotate(0deg);
    }

    /* Layout */
    .container {
      max-width: var(--max-width);
      margin: 0 auto;
      padding: 0 var(--container-gutter);
      position: relative;
      z-index: 2;
    }

    main {
      position: relative;
      z-index: 2;
    }

    .content-width {
      max-width: var(--content-width);
    }

    /* Header */
    header {
      padding: calc(var(--space-unit) * 3.5) 0 calc(var(--space-unit) * 2);
      border-bottom: 1px solid var(--border-subtle);
      background: linear-gradient(180deg, rgba(13, 10, 8, 0.35), transparent);
      backdrop-filter: blur(12px);
    }

    body.light-mode header {
      background: linear-gradient(180deg, rgba(248, 243, 234, 0.6), transparent);
    }

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

    .logo-flame {
      width: 40px;
      height: 40px;
      position: relative;
      filter: brightness(1);
      transition: filter var(--transition-gentle);
    }

    body.dark-mode .logo-flame {
      filter: brightness(1.4) saturate(1.3);
    }

    @keyframes flicker {
      0%, 100% { opacity: 1; transform: scale(1); }
      33% { opacity: 0.92; transform: scale(0.98); }
      66% { opacity: 0.88; transform: scale(0.97); }
    }

    .logo-flame {
      animation: flicker 4s ease-in-out infinite;
    }

    body.dark-mode .logo-flame {
      animation: flicker 3s ease-in-out infinite;
    }

    .logo-text {
      font-size: 1.75rem;
      font-weight: 500;
      color: var(--text-primary);
      letter-spacing: -0.03em;
      font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    }

    .logo-tagline {
      font-size: 0.75rem;
      color: var(--text-tertiary);
      text-transform: uppercase;
      letter-spacing: 0.15em;
      font-weight: 500;
      margin-left: auto;
      opacity: 0.7;
    }

    /* Typography */
    h1 {
      font-size: clamp(3rem, 6vw, 5.5rem);
      font-weight: 500;
      letter-spacing: -0.04em;
      color: var(--text-primary);
      margin-bottom: 2rem;
      line-height: 1.05;
      font-family: 'Space Grotesk', 'Segoe UI', sans-serif;
    }

    h2 {
      font-size: clamp(2.25rem, 4.5vw, 3.75rem);
      font-weight: 500;
      letter-spacing: -0.03em;
      color: var(--text-primary);
      margin-bottom: 1.5rem;
      line-height: 1.1;
      font-family: 'Space Grotesk', 'Segoe UI', sans-serif;
    }

    h3 {
      font-size: 1.75rem;
      font-weight: 500;
      color: var(--text-primary);
      margin-bottom: 1rem;
      letter-spacing: -0.02em;
      font-family: 'Space Grotesk', 'Segoe UI', sans-serif;
    }

    .subheading {
      font-size: clamp(1.5rem, 2.5vw, 2rem);
      font-weight: 400;
      color: var(--text-secondary);
      line-height: 1.5;
      letter-spacing: -0.01em;
    }

    p {
      color: var(--text-secondary);
      margin-bottom: 1.25rem;
      font-size: 1.125rem;
      line-height: 1.8;
    }

    .large-text {
      font-size: 1.375rem;
      line-height: 1.7;
    }

    /* Hero Section */
    .hero {
      padding: calc(var(--space-unit) * 9) 0 calc(var(--space-unit) * 10);
      position: relative;
      min-height: 85vh;
      display: flex;
      align-items: center;
      overflow: hidden;
    }

    .hero::before {
      content: '';
      position: absolute;
      inset: 0;
      background:
        radial-gradient(800px circle at 15% 20%, rgba(0, 220, 255, 0.18), transparent 60%),
        radial-gradient(700px circle at 85% 15%, rgba(255, 120, 90, 0.22), transparent 55%),
        radial-gradient(600px circle at 70% 80%, rgba(0, 255, 180, 0.16), transparent 60%);
      opacity: 0.9;
      z-index: 0;
    }

    .hero::after {
      content: '';
      position: absolute;
      inset: 8% 6% 12% 6%;
      border: 1px solid rgba(0, 220, 255, 0.35);
      clip-path: polygon(0 0, 100% 0, 100% 88%, 94% 100%, 0 100%);
      box-shadow:
        0 0 30px rgba(0, 220, 255, 0.2),
        inset 0 0 40px rgba(0, 220, 255, 0.1);
      z-index: 1;
      pointer-events: none;
    }

    .hero-atmosphere {
      position: absolute;
      inset: 0;
      z-index: 1;
      pointer-events: none;
    }

    .hero-grid {
      position: absolute;
      inset: 0;
      background-image:
        linear-gradient(transparent 92%, rgba(0, 220, 255, 0.18) 100%),
        linear-gradient(90deg, rgba(0, 220, 255, 0.12) 1px, transparent 1px);
      background-size: 100% 48px, 64px 100%;
      background-position:
        0 0,
        calc(50% - min(var(--max-width), 100%) / 2 + var(--container-gutter)) 0;
      opacity: 0.35;
      transform: translateY(12%);
      animation: grid-drift 18s linear infinite;
    }

    .hero-slice {
      position: absolute;
      inset: 18% 10% 22% 10%;
      border: 1px solid rgba(255, 120, 90, 0.35);
      clip-path: polygon(6% 0, 100% 0, 94% 100%, 0 100%);
      box-shadow: 0 0 35px rgba(255, 120, 90, 0.22);
    }

    .hero-spark {
      position: absolute;
      width: 140px;
      height: 140px;
      border-radius: 50%;
      border: 1px dashed rgba(0, 255, 180, 0.4);
      top: 68%;
      left: 12%;
      box-shadow: 0 0 40px rgba(0, 255, 180, 0.2);
      animation: spark-pulse 6s ease-in-out infinite;
    }

    @keyframes grid-drift {
      0% {
        transform: translateY(12%);
      }
      50% {
        transform: translateY(6%);
      }
      100% {
        transform: translateY(12%);
      }
    }

    @keyframes spark-pulse {
      0%, 100% {
        transform: scale(1);
        opacity: 0.5;
      }
      50% {
        transform: scale(1.1);
        opacity: 0.9;
      }
    }

    .hero-content {
      display: flex;
      flex-direction: column;
      align-items: flex-start;
      gap: calc(var(--space-unit) * 2);
      position: relative;
      z-index: 2;
    }

    .hero-copy {
      max-width: 700px;
    }


    .heat-badge-large {
      display: inline-flex;
      flex-direction: column;
      align-items: flex-start;
      gap: 1rem;
      margin: 0 0 2.5rem;
      position: relative;
    }

    .heat-text {
      font-size: 1.25rem;
      font-weight: 500;
      color: var(--ember-red);
      letter-spacing: 0.15em;
      text-transform: uppercase;
    }

    .heat-acronym {
      font-size: 4rem;
      font-weight: 700;
      color: var(--text-primary);
      letter-spacing: 0.2em;
      text-shadow: 0 2px 8px var(--heat-glow);
      transition: all var(--transition-smooth);
      font-family: 'Space Grotesk', 'Segoe UI', sans-serif;
    }

    body.dark-mode .heat-acronym {
      text-shadow: 0 4px 16px var(--heat-glow);
    }

    .heat-expanded {
      font-size: 0.95rem;
      letter-spacing: 0.2em;
      color: var(--text-tertiary);
      text-transform: uppercase;
      font-weight: 500;
      opacity: 0.8;
      transition: color var(--transition-smooth), text-shadow var(--transition-smooth), transform var(--transition-smooth);
    }

    .heat-badge-large:hover .heat-expanded {
      color: var(--ember-red);
      text-shadow: 0 0 18px rgba(197, 71, 40, 0.45);
      transform: translateY(-1px);
    }

    .hero h1 {
      max-width: 780px;
      margin: 2rem 0 0;
      font-size: clamp(3.5rem, 8vw, 6rem);
      line-height: 1.05;
    }

    .hero-blueprint {
      position: relative;
      padding: calc(var(--space-unit) * 2) calc(var(--space-unit) * 2.5);
      border-radius: 24px;
      border: 1px solid rgba(0, 220, 255, 0.35);
      background:
        linear-gradient(180deg, rgba(0, 15, 28, 0.55), rgba(0, 15, 28, 0.25));
      box-shadow:
        inset 0 0 40px rgba(0, 220, 255, 0.12),
        0 20px 60px rgba(0, 0, 0, 0.35);
      overflow: hidden;
    }

    body.light-mode .hero-blueprint {
      background: linear-gradient(180deg, rgba(248, 243, 234, 0.6), rgba(248, 243, 234, 0.3));
      box-shadow:
        inset 0 0 30px rgba(0, 220, 255, 0.08),
        0 16px 40px rgba(30, 26, 23, 0.12);
    }

    .hero-blueprint::before {
      content: '';
      position: absolute;
      inset: 0;
      background-image:
        linear-gradient(transparent 92%, rgba(0, 220, 255, 0.25) 100%),
        linear-gradient(90deg, rgba(0, 220, 255, 0.2) 1px, transparent 1px);
      background-size: 100% 40px, 48px 100%;
      opacity: 0.45;
      pointer-events: none;
    }

    .hero-blueprint::after {
      content: '';
      position: absolute;
      inset: 10px;
      border: 1px dashed rgba(0, 255, 180, 0.35);
      border-radius: 20px;
      pointer-events: none;
    }

    .hero-blueprint h1 {
      position: relative;
      z-index: 1;
      text-shadow: 0 0 22px rgba(0, 220, 255, 0.3);
    }

    .natural-systems {
      display: block;
      color: var(--ember-red);
      font-weight: 400;
    }

    .are-relentless {
      display: block;
      color: var(--text-primary);
      font-weight: 400;
    }

    .blueprint-intro {
      display: flex;
      flex-direction: column;
      align-items: flex-start;
      gap: 1rem;
      margin: 2.5rem 0 2rem;
    }

    .blueprint-label {
      font-size: 1.125rem;
      font-weight: 500;
      color: var(--ember-red);
      letter-spacing: 0.1em;
      text-transform: uppercase;
      opacity: 0.9;
    }

    .arrow-down {
      width: 32px;
      height: 32px;
      color: var(--ember-red);
      animation: bounce 2s infinite ease-in-out;
      transition: transform var(--transition-smooth);
    }

    .arrow-button {
      background: none;
      border: none;
      padding: 0;
      cursor: pointer;
      display: inline-flex;
      align-items: center;
      justify-content: center;
    }

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

    /* Statement Section */
    .statement {
      padding: calc(var(--space-unit) * 4) 0 calc(var(--space-unit) * 6);
      position: relative;
    }

    .statement::before {
      content: '';
      position: absolute;
      top: -50px;
      left: 0;
      right: 0;
      height: 1px;
      background: linear-gradient(90deg,
        transparent 0%,
        var(--ember-red) 50%,
        transparent 100%);
      opacity: 0.3;
    }

    .statement p {
      font-size: clamp(1.5rem, 2.5vw, 2.25rem);
      line-height: 1.6;
      color: var(--text-primary);
      font-weight: 400;
      max-width: 800px;
      margin: 0;
    }

    .statement .content-width {
      margin-left: 0;
    }

    /* Section Divider */
    .section-divider {
      height: 1px;
      background: linear-gradient(90deg,
        var(--ember-red) 0%,
        var(--border-subtle) 8rem,
        transparent 100%);
      margin: calc(var(--space-unit) * 6) 0;
      position: relative;
    }

    body.dark-mode .section-divider {
      box-shadow: 0 0 20px var(--heat-glow);
    }

    /* Services Grid */
    .services {
      padding: calc(var(--space-unit) * 4) 0;
    }

    .services h2 {
      margin-bottom: calc(var(--space-unit) * 4);
    }

    .services-grid {
      display: grid;
      grid-template-columns: repeat(12, minmax(0, 1fr));
      gap: calc(var(--space-unit) * 2);
      margin-top: calc(var(--space-unit) * 3);
    }

    .service-card {
      grid-column: span 6;
      background: linear-gradient(140deg, rgba(255, 255, 255, 0.02), rgba(255, 255, 255, 0)),
                  var(--bg-secondary);
      border: 1px solid var(--border-subtle);
      padding: calc(var(--space-unit) * 2.5);
      border-radius: var(--radius-md);
      transition: all var(--transition-smooth);
      position: relative;
      cursor: default;
      overflow: hidden;
    }

    .service-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 1px;
      background: linear-gradient(90deg, var(--ember-red), transparent);
      opacity: 0;
      transition: opacity var(--transition-smooth);
    }

    .service-card:hover {
      transform: translateY(-4px);
      box-shadow: 0 12px 48px var(--heat-glow);
      border-color: var(--border-emphasis);
    }

    .service-card:hover::before {
      opacity: 1;
    }

    body.dark-mode .service-card {
      box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
    }

    body.dark-mode .service-card:hover {
      box-shadow: 0 16px 64px rgba(255, 107, 74, 0.2),
                  0 0 48px rgba(255, 107, 74, 0.1);
    }

    .service-card h3 {
      color: var(--ember-red);
      margin-bottom: 1.25rem;
      font-size: 1.5rem;
    }

    .service-card p {
      font-size: 1.0625rem;
      line-height: 1.75;
      color: var(--text-secondary);
    }

    /* Philosophy Section */
    .philosophy {
      padding: calc(var(--space-unit) * 4) 0;
    }

    .philosophy h2 {
      margin-bottom: calc(var(--space-unit) * 4);
    }

    .philosophy-grid {
      display: grid;
      grid-template-columns: repeat(12, minmax(0, 1fr));
      gap: calc(var(--space-unit) * 3);
      max-width: 1050px;
    }

    .philosophy-item {
      position: relative;
      padding-left: calc(var(--space-unit) * 2);
      grid-column: span 6;
    }

    .philosophy-item::before {
      content: '';
      position: absolute;
      left: 0;
      top: 0.5rem;
      width: 3px;
      height: 3rem;
      background: linear-gradient(180deg, var(--ember-red), transparent);
      border-radius: 2px;
    }

    .philosophy-item h3 {
      color: var(--text-primary);
      margin-bottom: 1rem;
    }

    .philosophy-item p {
      color: var(--text-secondary);
      font-size: 1.125rem;
      line-height: 1.8;
    }

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

    /* Positioning Statement */
    .positioning {
      position: relative;
      padding: calc(var(--space-unit) * 6) 0;
      margin: 0 auto;
      text-align: center;
      overflow: hidden;
    }

    .positioning .container {
      max-width: 900px;
      position: relative;
      z-index: 2;
    }

    .positioning-blueprint {
      position: absolute;
      inset: 10% 0;
      width: 100vw;
      left: 50%;
      transform: translateX(-50%);
      pointer-events: none;
      z-index: 1;
    }

    .positioning-grid {
      position: absolute;
      inset: 0;
      background-image:
        linear-gradient(transparent 92%, rgba(0, 220, 255, 0.22) 100%),
        linear-gradient(90deg, rgba(0, 220, 255, 0.2) 1px, transparent 1px);
      background-size: 100% 80px, 90px 100%;
      opacity: 0.35;
      transform: translateY(8%);
    }

    .positioning-frame {
      position: absolute;
      inset: 6% 10%;
      border: 1px solid rgba(0, 220, 255, 0.35);
      clip-path: polygon(0 0, 96% 0, 100% 12%, 100% 100%, 0 100%);
      box-shadow:
        inset 0 0 40px rgba(0, 220, 255, 0.12),
        0 0 40px rgba(0, 220, 255, 0.12);
    }

    .positioning-glow {
      position: absolute;
      width: 220px;
      height: 220px;
      border-radius: 50%;
      border: 1px dashed rgba(0, 255, 180, 0.4);
      top: 18%;
      right: 12%;
      opacity: 0.5;
      box-shadow: 0 0 40px rgba(0, 255, 180, 0.2);
    }

    body.light-mode .positioning-grid {
      opacity: 0.22;
    }

    body.light-mode .positioning-frame {
      border-color: rgba(0, 140, 180, 0.3);
      box-shadow:
        inset 0 0 30px rgba(0, 140, 180, 0.08),
        0 0 30px rgba(0, 140, 180, 0.08);
    }

    body.light-mode .positioning-glow {
      opacity: 0.35;
    }

    .positioning-text {
      font-size: clamp(1.5rem, 2.5vw, 2.125rem);
      line-height: 1.5;
      color: var(--text-primary);
      font-weight: 400;
      letter-spacing: -0.02em;
      margin-bottom: calc(var(--space-unit) * 2);
      font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    }

    .positioning-subtitle {
      font-size: 1.25rem;
      color: var(--text-secondary);
      line-height: 1.6;
      font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    }

    /* Contact Section */
    .contact {
      padding: calc(var(--space-unit) * 6) 0 calc(var(--space-unit) * 8);
    }

    .services,
    .philosophy,
    .positioning,
    .contact {
      content-visibility: auto;
      contain-intrinsic-size: 800px;
    }

    .contact-content {
      max-width: 700px;
      margin: 0 auto;
      background: linear-gradient(160deg, rgba(255, 255, 255, 0.02), rgba(255, 255, 255, 0)),
                  var(--bg-secondary);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-lg);
      padding: calc(var(--space-unit) * 3);
      box-shadow: var(--shadow-ambient);
    }

    .contact h2 {
      margin-bottom: calc(var(--space-unit) * 2);
    }

    .contact-intro {
      font-size: 1.1875rem;
      line-height: 1.7;
      color: var(--text-secondary);
      margin-bottom: calc(var(--space-unit) * 3);
    }

    form {
      display: grid;
      gap: calc(var(--space-unit) * 1.25);
    }

    input, textarea {
      width: 100%;
      background: var(--bg-secondary);
      border: 1px solid var(--border-subtle);
      color: var(--text-primary);
      padding: 1rem 1.25rem;
      border-radius: var(--radius-sm);
      font-family: inherit;
      font-size: 1rem;
      transition: all var(--transition-smooth);
    }

    input::placeholder, textarea::placeholder {
      color: var(--text-tertiary);
    }

    input:focus, textarea:focus {
      outline: none;
      border-color: var(--ember-red);
      box-shadow: 0 0 0 3px var(--heat-glow);
      background: var(--bg-primary);
    }

    body.dark-mode input:focus,
    body.dark-mode textarea:focus {
      box-shadow: 0 0 0 4px var(--heat-glow),
                  0 8px 32px var(--heat-bloom);
    }

    textarea {
      resize: vertical;
      min-height: 180px;
    }

    button[type="submit"] {
      background: linear-gradient(120deg, var(--ember-red), var(--ember-bright));
      color: var(--bg-primary);
      border: none;
      padding: 1.125rem 2.5rem;
      border-radius: 999px;
      font-size: 1rem;
      font-weight: 500;
      cursor: pointer;
      transition: all var(--transition-smooth);
      letter-spacing: 0.02em;
      justify-self: start;
    }

    button[type="submit"]:hover {
      background: var(--ember-bright);
      transform: translateY(-2px);
      box-shadow: 0 8px 32px var(--heat-glow);
    }

    button[type="submit"]:active {
      transform: translateY(0);
    }

    button:focus-visible,
    .theme-toggle:focus-visible,
    .arrow-button:focus-visible,
    input:focus-visible,
    textarea:focus-visible {
      outline: 2px solid var(--flame-yellow);
      outline-offset: 3px;
    }

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

    /* Footer */
    footer {
      border-top: 1px solid var(--border-subtle);
      padding: calc(var(--space-unit) * 3) 0;
      color: var(--text-tertiary);
      font-size: 0.9375rem;
      background: linear-gradient(0deg, rgba(13, 10, 8, 0.25), transparent);
    }

    .reveal {
      opacity: 0;
      transform: translateY(20px);
      transition: opacity var(--transition-gentle), transform var(--transition-gentle);
    }

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

    .footer-content {
      display: flex;
      justify-content: center;
      align-items: center;
      flex-direction: column;
      flex-wrap: nowrap;
      gap: 0.5rem;
      text-align: center;
    }

    footer p {
      margin: 0;
    }

    /* Reduced Motion */
    @media (prefers-reduced-motion: reduce) {
      * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
      }
    }

    @media (max-width: 1024px) {
      .services-grid {
        grid-template-columns: 1fr;
      }

      .service-card {
        grid-column: auto;
      }

      .philosophy-grid {
        grid-template-columns: 1fr;
      }

      .philosophy-item {
        grid-column: auto;
      }
    }

    /* Responsive */
    @media (max-width: 768px) {
      .logo-tagline {
        display: none;
      }

      .hero {
        padding: calc(var(--space-unit) * 6) 0 calc(var(--space-unit) * 8);
        min-height: 70vh;
      }

      .heat-badge-large {
        gap: 0.75rem;
      }

      .heat-text {
        font-size: 1rem;
      }

      .heat-acronym {
        font-size: 3rem;
      }

      .hero h1 {
        font-size: clamp(2.5rem, 8vw, 4rem);
        margin: 1.5rem auto 0;
      }

      .blueprint-intro {
        gap: 0.75rem;
        margin: 2rem auto 1.5rem;
      }

      .arrow-down {
        width: 24px;
        height: 24px;
      }

      .positioning {
        text-align: left;
      }

      .footer-content {
        flex-direction: column;
        align-items: flex-start;
      }
    }