
    /* ---------------------------------------------------------------------
       Design Tokens
       Dark mode is the default / primary Opus Ars experience.
       Light mode is automatically applied by browser preference.
    --------------------------------------------------------------------- */
    :root {
      color-scheme: dark light;

      --bg: #0D1117;
      --bg-2: #101721;
      --panel: rgba(22, 27, 34, 0.78);
      --panel-strong: rgba(32, 39, 49, 0.9);
      --panel-soft: rgba(255, 255, 255, 0.035);
      --line: rgba(139, 148, 158, 0.2);
      --line-strong: rgba(139, 148, 158, 0.34);
      --text: #FFFFFF;
      --muted: #8B949E;
      --muted-2: #B9C0C8;
      --steel: #2A2F36;
      --blue: #2563EB;
      --blue-2: #4F8CFF;
      --blue-soft: rgba(37, 99, 235, 0.16);
      --white-soft: rgba(255, 255, 255, 0.72);
      --shadow: 0 28px 100px rgba(0, 0, 0, 0.44);
      --shadow-blue: 0 18px 60px rgba(37, 99, 235, 0.25);
      --radius-xl: 28px;
      --radius-lg: 22px;
      --radius-md: 16px;
      --radius-sm: 12px;
      --container: 1180px;
      --section-y: clamp(4.5rem, 8vw, 7rem);
      --nav-h: 78px;
      --font-heading: "Sora", "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
      --font-body: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    }

    @media (prefers-color-scheme: light) {
      :root {
        --bg: #F7F9FC;
        --bg-2: #FFFFFF;
        --panel: rgba(255, 255, 255, 0.84);
        --panel-strong: rgba(255, 255, 255, 0.94);
        --panel-soft: rgba(13, 17, 23, 0.035);
        --line: rgba(42, 47, 54, 0.14);
        --line-strong: rgba(42, 47, 54, 0.22);
        --text: #0D1117;
        --muted: #5F6B7A;
        --muted-2: #2A2F36;
        --steel: #E8ECF2;
        --blue: #2563EB;
        --blue-2: #1D4ED8;
        --blue-soft: rgba(37, 99, 235, 0.11);
        --white-soft: rgba(13, 17, 23, 0.68);
        --shadow: 0 24px 80px rgba(13, 17, 23, 0.1);
        --shadow-blue: 0 18px 54px rgba(37, 99, 235, 0.18);
      }
    }

    /* Optional manual theme hooks for future Django/base template use.
       Example later: <html data-theme="dark"> */
    html[data-theme="dark"] {
      --bg: #0D1117;
      --bg-2: #101721;
      --panel: rgba(22, 27, 34, 0.78);
      --panel-strong: rgba(32, 39, 49, 0.9);
      --panel-soft: rgba(255, 255, 255, 0.035);
      --line: rgba(139, 148, 158, 0.2);
      --line-strong: rgba(139, 148, 158, 0.34);
      --text: #FFFFFF;
      --muted: #8B949E;
      --muted-2: #B9C0C8;
      --steel: #2A2F36;
      --white-soft: rgba(255, 255, 255, 0.72);
      --shadow: 0 28px 100px rgba(0, 0, 0, 0.44);
      --shadow-blue: 0 18px 60px rgba(37, 99, 235, 0.25);
    }

    html[data-theme="light"] {
      --bg: #F7F9FC;
      --bg-2: #FFFFFF;
      --panel: rgba(255, 255, 255, 0.84);
      --panel-strong: rgba(255, 255, 255, 0.94);
      --panel-soft: rgba(13, 17, 23, 0.035);
      --line: rgba(42, 47, 54, 0.14);
      --line-strong: rgba(42, 47, 54, 0.22);
      --text: #0D1117;
      --muted: #5F6B7A;
      --muted-2: #2A2F36;
      --steel: #E8ECF2;
      --white-soft: rgba(13, 17, 23, 0.68);
      --shadow: 0 24px 80px rgba(13, 17, 23, 0.1);
      --shadow-blue: 0 18px 54px rgba(37, 99, 235, 0.18);
    }

    /* ---------------------------------------------------------------------
       Base
    --------------------------------------------------------------------- */
    *, *::before, *::after {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
      text-size-adjust: 100%;
    }

    body {
      margin: 0;
      min-height: 100vh;
      font-family: var(--font-body);
      color: var(--text);
      background:
        radial-gradient(circle at 18% 0%, rgba(37, 99, 235, 0.18), transparent 34rem),
        radial-gradient(circle at 82% 10%, rgba(139, 148, 158, 0.12), transparent 30rem),
        linear-gradient(180deg, var(--bg), var(--bg-2) 48%, var(--bg));
      overflow-x: hidden;
    }

    body::before {
      content: "";
      position: fixed;
      inset: 0;
      pointer-events: none;
      background-image:
        linear-gradient(to right, rgba(139, 148, 158, 0.07) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(139, 148, 158, 0.055) 1px, transparent 1px);
      background-size: 72px 72px;
      mask-image: linear-gradient(to bottom, rgba(0,0,0,0.78), transparent 74%);
      z-index: -3;
    }

    body::after {
      content: "";
      position: fixed;
      inset: auto -20% -38% -20%;
      height: 50vh;
      pointer-events: none;
      background: radial-gradient(ellipse at center, rgba(37, 99, 235, 0.13), transparent 68%);
      filter: blur(16px);
      z-index: -2;
    }

    a {
      color: inherit;
      text-decoration: none;
    }

    img, svg {
      max-width: 100%;
      display: block;
    }

    p, h1, h2, h3, h4 {
      margin-top: 0;
    }

    p {
      color: var(--muted-2);
      line-height: 1.72;
    }

    ::selection {
      background: rgba(37, 99, 235, 0.45);
      color: #FFFFFF;
    }

    .container {
      width: min(100% - 2rem, var(--container));
      margin-inline: auto;
    }

    .section {
      padding: var(--section-y) 0;
      position: relative;
    }

    .section-tight {
      padding: clamp(3.5rem, 6vw, 5rem) 0;
    }

    .section-head {
      display: grid;
      grid-template-columns: minmax(0, 0.92fr) minmax(260px, 0.55fr);
      gap: 2rem;
      align-items: end;
      margin-bottom: 2rem;
    }

    .section-title {
      font-family: var(--font-heading);
      font-size: clamp(2rem, 4vw, 3.35rem);
      line-height: 1.03;
      letter-spacing: -0.055em;
      margin-bottom: 0;
    }

    .section-copy {
      margin-bottom: 0;
      color: var(--muted);
      font-size: 1rem;
    }

    .eyebrow,
    .badge {
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
      width: fit-content;
      border: 1px solid var(--line);
      background: linear-gradient(135deg, rgba(255,255,255,0.075), rgba(255,255,255,0.02));
      color: var(--muted-2);
      border-radius: 999px;
      padding: 0.48rem 0.72rem;
      font-size: 0.72rem;
      font-weight: 700;
      line-height: 1;
      text-transform: uppercase;
      letter-spacing: 0.16em;
      box-shadow: inset 0 1px 0 rgba(255,255,255,0.07);
    }

    .eyebrow::before,
    .badge-dot {
      content: "";
      width: 0.42rem;
      height: 0.42rem;
      border-radius: 2px;
      background: var(--blue);
      box-shadow: 0 0 22px rgba(37, 99, 235, 0.9);
      display: inline-block;
      flex: 0 0 auto;
    }

    .label {
      font-size: 0.72rem;
      font-weight: 800;
      letter-spacing: 0.18em;
      text-transform: uppercase;
      color: var(--muted);
    }

    .text-gradient {
      background: linear-gradient(100deg, var(--text), var(--muted-2) 48%, var(--blue-2));
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
    }

    .blue {
      color: var(--blue-2);
    }

    .grid {
      display: grid;
      gap: 1rem;
    }

    .grid-2 {
      grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .grid-3 {
      grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .grid-4 {
      grid-template-columns: repeat(4, minmax(0, 1fr));
    }

    .card {
      position: relative;
      overflow: hidden;
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      background:
        linear-gradient(145deg, rgba(255, 255, 255, 0.075), rgba(255, 255, 255, 0.018)),
        var(--panel);
      box-shadow: var(--shadow);
      backdrop-filter: blur(22px);
    }

    .card::before {
      content: "";
      position: absolute;
      inset: 0;
      pointer-events: none;
      background:
        linear-gradient(90deg, transparent, rgba(255,255,255,0.07), transparent),
        radial-gradient(circle at 16% 12%, rgba(37, 99, 235, 0.13), transparent 34%);
      opacity: 0.75;
      transform: translateX(-72%);
      transition: transform 0.65s ease;
    }

    .card:hover::before {
      transform: translateX(0);
    }

    .card:hover {
      border-color: rgba(37, 99, 235, 0.42);
      box-shadow: var(--shadow), var(--shadow-blue);
    }

    .card-inner {
      position: relative;
      z-index: 1;
      padding: 1.35rem;
    }

    .btn-row {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 0.85rem;
    }

    .btn {
      --btn-bg: var(--panel-strong);
      --btn-color: var(--text);
      --btn-border: var(--line-strong);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 0.62rem;
      min-height: 3rem;
      padding: 0.9rem 1.08rem;
      border-radius: 999px;
      border: 1px solid var(--btn-border);
      background: var(--btn-bg);
      color: var(--btn-color);
      font-size: 0.9rem;
      font-weight: 800;
      letter-spacing: -0.01em;
      box-shadow: inset 0 1px 0 rgba(255,255,255,0.09);
      transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
      cursor: pointer;
    }

    .btn:hover {
      transform: translateY(-2px);
      border-color: rgba(37, 99, 235, 0.5);
      box-shadow: inset 0 1px 0 rgba(255,255,255,0.1), 0 16px 40px rgba(0,0,0,0.2);
    }

    .btn-primary {
      --btn-bg: linear-gradient(135deg, #2563EB, #1D4ED8 48%, #0F3EB7);
      --btn-color: #FFFFFF;
      --btn-border: rgba(79, 140, 255, 0.6);
      box-shadow: 0 18px 42px rgba(37, 99, 235, 0.3), inset 0 1px 0 rgba(255,255,255,0.25);
    }

    .btn-secondary {
      --btn-bg: rgba(255,255,255,0.045);
      --btn-color: var(--text);
    }

    .btn-ghost {
      min-height: 2.6rem;
      padding: 0.72rem 0.95rem;
      background: transparent;
    }

    .icon-box {
      width: 2.6rem;
      height: 2.6rem;
      border: 1px solid rgba(37, 99, 235, 0.32);
      border-radius: 14px;
      display: grid;
      place-items: center;
      background:
        linear-gradient(135deg, rgba(37, 99, 235, 0.2), rgba(255,255,255,0.04)),
        rgba(255,255,255,0.03);
      box-shadow: inset 0 1px 0 rgba(255,255,255,0.08), 0 14px 34px rgba(37, 99, 235, 0.14);
      color: var(--blue-2);
      flex: 0 0 auto;
    }

    .icon-box svg {
      width: 1.18rem;
      height: 1.18rem;
    }

    /* ---------------------------------------------------------------------
       Brand Mark / Wordmark
       CSS-built mark inspired by the uploaded Opus Ars direction.
       Replace with an SVG/logo image later if desired.
    --------------------------------------------------------------------- */
    .brand {
      display: inline-flex;
      align-items: center;
      gap: 0.8rem;
      min-width: max-content;
    }

    .brand-mark {
      position: relative;
      width: 3rem;
      height: 2.52rem;
      flex: 0 0 auto;
    }

    .brand-mark::before {
      content: "";
      position: absolute;
      left: 0.02rem;
      top: 0.16rem;
      width: 2rem;
      height: 2rem;
      border: 0.32rem solid var(--text);
      border-right-color: transparent;
      border-radius: 50%;
      transform: rotate(18deg);
      opacity: 0.95;
      filter: drop-shadow(0 8px 18px rgba(255,255,255,0.08));
    }

    .brand-mark::after {
      content: "";
      position: absolute;
      left: 1.25rem;
      top: 0.02rem;
      width: 0.48rem;
      height: 2.55rem;
      border-radius: 0.08rem;
      background: linear-gradient(155deg, #FFFFFF 0%, #8B949E 45%, #2563EB 100%);
      transform: skewX(-25deg);
      box-shadow: 0 10px 22px rgba(37, 99, 235, 0.22);
    }

    .brand-mark .brand-leg {
      position: absolute;
      right: 0.24rem;
      top: 0.1rem;
      width: 0.46rem;
      height: 2.42rem;
      border-radius: 0.08rem;
      background: linear-gradient(160deg, #DDE3EB 0%, #8B949E 36%, #2563EB 100%);
      transform: skewX(28deg);
      box-shadow: 0 12px 28px rgba(37, 99, 235, 0.24);
    }

    .brand-mark .brand-dot {
      position: absolute;
      left: 1.62rem;
      bottom: 0.64rem;
      width: 0.42rem;
      height: 0.42rem;
      border-radius: 0.06rem;
      background: var(--blue);
      box-shadow: 0 0 22px rgba(37, 99, 235, 0.9);
      z-index: 2;
    }

    .brand-text {
      display: grid;
      gap: 0.08rem;
      line-height: 1;
    }

    .brand-name {
      font-family: var(--font-heading);
      font-size: 1.02rem;
      font-weight: 700;
      letter-spacing: 0.28em;
      text-transform: uppercase;
    }

    .brand-name span {
      color: var(--blue-2);
    }

    .brand-sub {
      color: var(--muted);
      font-size: 0.62rem;
      font-weight: 800;
      letter-spacing: 0.18em;
      text-transform: uppercase;
    }

    /* ---------------------------------------------------------------------
       Navigation
    --------------------------------------------------------------------- */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 50;
      border-bottom: 1px solid var(--line);
      background: rgba(13, 17, 23, 0.94);
      backdrop-filter: blur(22px) saturate(150%);
    }
    
    @media (prefers-color-scheme: light) {
      .site-header {
        background: rgba(255, 255, 255, 0.96);
      }
    }

    .nav {
      min-height: var(--nav-h);
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 1rem;
    }

    .nav-toggle {
      display: none;
    }

    .nav-toggle-btn {
      display: none;
      width: 2.8rem;
      height: 2.8rem;
      border: 1px solid var(--line);
      border-radius: 999px;
      align-items: center;
      justify-content: center;
      background: var(--panel);
      cursor: pointer;
    }

    .nav-toggle-btn span,
    .nav-toggle-btn span::before,
    .nav-toggle-btn span::after {
      display: block;
      width: 1.1rem;
      height: 2px;
      border-radius: 99px;
      background: var(--text);
      position: relative;
      transition: transform 0.2s ease;
    }

    .nav-toggle-btn span::before,
    .nav-toggle-btn span::after {
      content: "";
      position: absolute;
      left: 0;
    }

    .nav-toggle-btn span::before {
      top: -0.36rem;
    }

    .nav-toggle-btn span::after {
      top: 0.36rem;
    }

    .nav-menu {
      display: flex;
      align-items: center;
      gap: 0.35rem;
    }

    .nav-link {
      position: relative;
      padding: 0.72rem 0.8rem;
      border-radius: 999px;
      color: var(--muted-2);
      font-size: 0.82rem;
      font-weight: 750;
      letter-spacing: -0.01em;
    }

    .nav-link:hover {
      color: var(--text);
      background: rgba(255,255,255,0.055);
    }

    .nav-actions {
      display: flex;
      align-items: center;
      gap: 0.7rem;
    }

    /* ---------------------------------------------------------------------
       Hero
    --------------------------------------------------------------------- */
    .hero {
      padding: clamp(4.25rem, 8vw, 7rem) 0 clamp(3rem, 7vw, 5.5rem);
      position: relative;
    }

    .hero::before {
      content: "";
      position: absolute;
      left: 50%;
      top: -10%;
      width: min(72rem, 94vw);
      height: min(72rem, 94vw);
      transform: translateX(-50%);
      background:
        radial-gradient(circle at center, rgba(37, 99, 235, 0.14), transparent 45%),
        conic-gradient(from 210deg, transparent, rgba(139,148,158,0.08), transparent, rgba(37,99,235,0.12), transparent);
      border-radius: 50%;
      opacity: 0.82;
      pointer-events: none;
      z-index: -1;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: minmax(0, 1.04fr) minmax(320px, 0.78fr);
      align-items: center;
      gap: clamp(2rem, 5vw, 4.5rem);
    }

    .hero-copy {
      max-width: 740px;
    }

    .hero h1 {
      font-family: var(--font-heading);
      margin: 1.25rem 0 1.05rem;
      font-size: clamp(3.1rem, 8vw, 6.8rem);
      line-height: 0.93;
      letter-spacing: -0.078em;
      text-wrap: balance;
    }

    .hero-subheadline {
      max-width: 680px;
      color: var(--muted-2);
      font-size: clamp(1.02rem, 2vw, 1.2rem);
      margin-bottom: 1.7rem;
    }

    .hero-meta {
      margin-top: 1.55rem;
      display: flex;
      flex-wrap: wrap;
      gap: 0.62rem;
    }

    .mini-stat {
      display: inline-flex;
      align-items: center;
      gap: 0.55rem;
      border: 1px solid var(--line);
      border-radius: 999px;
      padding: 0.55rem 0.75rem;
      background: rgba(255,255,255,0.035);
      color: var(--muted-2);
      font-size: 0.78rem;
      font-weight: 750;
    }

    .mini-stat::before {
      content: "";
      width: 0.28rem;
      height: 0.85rem;
      border-radius: 99px;
      background: linear-gradient(180deg, #FFFFFF, var(--blue));
      opacity: 0.9;
    }

    .hero-panel {
      min-height: 560px;
      padding: 1rem;
      border-radius: calc(var(--radius-xl) + 8px);
      border: 1px solid var(--line-strong);
      background:
        linear-gradient(155deg, rgba(255,255,255,0.11), rgba(255,255,255,0.025) 44%, rgba(37,99,235,0.09)),
        var(--panel);
      box-shadow: var(--shadow), 0 0 0 1px rgba(255,255,255,0.03) inset;
      position: relative;
      overflow: hidden;
      backdrop-filter: blur(24px);
    }

    .hero-panel::before {
      content: "";
      position: absolute;
      inset: 0;
      background-image:
        linear-gradient(to right, rgba(139,148,158,0.09) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(139,148,158,0.08) 1px, transparent 1px);
      background-size: 38px 38px;
      opacity: 0.48;
      mask-image: radial-gradient(circle at 52% 36%, #000 0%, transparent 72%);
      pointer-events: none;
    }

    .hero-panel::after {
      content: "";
      position: absolute;
      width: 18rem;
      height: 18rem;
      right: -6rem;
      top: -6rem;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(37,99,235,0.38), transparent 68%);
      filter: blur(10px);
      opacity: 0.75;
      pointer-events: none;
    }

    .system-card {
      position: relative;
      z-index: 1;
      height: 100%;
      border-radius: var(--radius-xl);
      border: 1px solid var(--line);
      background: rgba(13, 17, 23, 0.54);
      overflow: hidden;
      padding: 1.1rem;
      display: grid;
      grid-template-rows: auto 1fr auto;
      gap: 1rem;
    }

    @media (prefers-color-scheme: light) {
      .system-card {
        background: rgba(255,255,255,0.64);
      }
    }

    html[data-theme="light"] .system-card {
      background: rgba(255,255,255,0.64);
    }

    .system-topbar {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 1rem;
      padding: 0.72rem 0.82rem;
      border: 1px solid var(--line);
      border-radius: 18px;
      background: rgba(255,255,255,0.045);
    }

    .window-dots {
      display: flex;
      gap: 0.32rem;
    }

    .window-dots i {
      width: 0.48rem;
      height: 0.48rem;
      border-radius: 50%;
      background: var(--muted);
      opacity: 0.55;
    }

    .system-label {
      color: var(--muted);
      font-size: 0.68rem;
      font-weight: 800;
      letter-spacing: 0.16em;
      text-transform: uppercase;
    }

    .dashboard-grid {
      display: grid;
      grid-template-columns: repeat(6, 1fr);
      grid-template-rows: repeat(7, minmax(32px, 1fr));
      gap: 0.72rem;
      min-height: 360px;
    }

    .module {
      position: relative;
      overflow: hidden;
      border: 1px solid var(--line);
      border-radius: 18px;
      background:
        linear-gradient(145deg, rgba(255,255,255,0.07), rgba(255,255,255,0.018)),
        rgba(255,255,255,0.035);
      padding: 0.8rem;
      box-shadow: inset 0 1px 0 rgba(255,255,255,0.06);
    }

    .module::before {
      content: "";
      position: absolute;
      inset: 0;
      background: radial-gradient(circle at 28% 10%, rgba(37,99,235,0.16), transparent 48%);
      pointer-events: none;
    }

    .module span,
    .module strong,
    .module small {
      position: relative;
      z-index: 1;
    }

    .module span {
      display: block;
      color: var(--muted);
      font-size: 0.64rem;
      font-weight: 800;
      letter-spacing: 0.14em;
      text-transform: uppercase;
    }

    .module strong {
      display: block;
      margin-top: 0.42rem;
      font-family: var(--font-heading);
      font-size: 1.32rem;
      letter-spacing: -0.05em;
    }

    .module small {
      display: block;
      margin-top: 0.45rem;
      color: var(--muted);
      line-height: 1.45;
    }

    .module-wide {
      grid-column: span 4;
      grid-row: span 3;
    }

    .module-tall {
      grid-column: span 2;
      grid-row: span 4;
    }

    .module-mid {
      grid-column: span 3;
      grid-row: span 2;
    }

    .module-small {
      grid-column: span 3;
      grid-row: span 2;
    }

    .bars {
      position: relative;
      z-index: 1;
      display: grid;
      gap: 0.5rem;
      margin-top: 1rem;
    }

    .bar {
      height: 0.48rem;
      border-radius: 99px;
      background: rgba(139,148,158,0.15);
      overflow: hidden;
    }

    .bar i {
      display: block;
      height: 100%;
      width: var(--w, 60%);
      border-radius: inherit;
      background: linear-gradient(90deg, var(--blue), rgba(255,255,255,0.76));
      box-shadow: 0 0 20px rgba(37,99,235,0.5);
    }

    .node-map {
      position: relative;
      z-index: 1;
      height: 100%;
      min-height: 170px;
    }

    .node-map::before,
    .node-map::after {
      content: "";
      position: absolute;
      inset: 24% 18%;
      border: 1px solid rgba(37,99,235,0.36);
      border-radius: 999px;
      transform: rotate(-18deg);
    }

    .node-map::after {
      inset: 32% 5% 18% 22%;
      transform: rotate(28deg);
      border-color: rgba(139,148,158,0.25);
    }

    .node {
      position: absolute;
      width: 0.64rem;
      height: 0.64rem;
      border-radius: 3px;
      background: var(--blue);
      box-shadow: 0 0 24px rgba(37,99,235,0.9);
    }

    .node:nth-child(1) { left: 14%; top: 22%; }
    .node:nth-child(2) { right: 14%; top: 34%; }
    .node:nth-child(3) { left: 38%; bottom: 18%; }
    .node:nth-child(4) { right: 26%; bottom: 22%; background: var(--text); }

    .system-footer {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 0.72rem;
    }

    .system-pill {
      border: 1px solid var(--line);
      border-radius: 999px;
      padding: 0.72rem 0.86rem;
      background: rgba(255,255,255,0.04);
      color: var(--muted-2);
      font-size: 0.75rem;
      font-weight: 800;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 0.8rem;
    }

    .system-pill i {
      width: 0.55rem;
      height: 0.55rem;
      border-radius: 2px;
      background: var(--blue);
      box-shadow: 0 0 16px rgba(37, 99, 235, 0.9);
      flex: 0 0 auto;
    }

    /* ---------------------------------------------------------------------
       Services / Cards
    --------------------------------------------------------------------- */
    .service-card,
    .solution-card,
    .price-card,
    .industry-card {
      min-height: 100%;
    }

    .service-card .card-inner,
    .solution-card .card-inner {
      display: grid;
      gap: 1.05rem;
    }

    .card-title-row {
      display: flex;
      align-items: flex-start;
      justify-content: space-between;
      gap: 1rem;
    }

    .card-kicker {
      display: block;
      margin-bottom: 0.38rem;
      color: var(--blue-2);
      font-size: 0.68rem;
      font-weight: 900;
      text-transform: uppercase;
      letter-spacing: 0.18em;
    }

    .card h3 {
      margin: 0;
      font-family: var(--font-heading);
      font-size: 1.05rem;
      letter-spacing: -0.035em;
    }

    .card p {
      margin-bottom: 0;
      color: var(--muted);
      font-size: 0.94rem;
      line-height: 1.65;
    }

    .line-list {
      list-style: none;
      padding: 0;
      margin: 0;
      display: grid;
      gap: 0.7rem;
    }

    .line-list li {
      display: flex;
      gap: 0.65rem;
      color: var(--muted-2);
      font-size: 0.9rem;
      line-height: 1.45;
    }

    .line-list li::before {
      content: "";
      width: 0.45rem;
      height: 0.45rem;
      border-radius: 2px;
      margin-top: 0.42rem;
      background: linear-gradient(135deg, var(--blue), var(--text));
      box-shadow: 0 0 16px rgba(37,99,235,0.55);
      flex: 0 0 auto;
    }

    .philosophy-shell {
      display: grid;
      grid-template-columns: minmax(0, 0.9fr) minmax(320px, 1.1fr);
      gap: 1rem;
      align-items: stretch;
    }

    .philosophy-copy {
      padding: clamp(1.4rem, 3vw, 2.4rem);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      gap: 2.5rem;
      min-height: 100%;
    }

    .philosophy-copy h2 {
      font-family: var(--font-heading);
      font-size: clamp(2rem, 4.2vw, 4.1rem);
      line-height: 1;
      letter-spacing: -0.075em;
      margin-bottom: 1.1rem;
    }

    .philosophy-copy p {
      font-size: 1.02rem;
    }

    .system-flow {
      padding: clamp(1.1rem, 2.4vw, 2rem);
      display: grid;
      gap: 1rem;
      background:
        radial-gradient(circle at 90% 12%, rgba(37,99,235,0.18), transparent 34%),
        linear-gradient(145deg, rgba(255,255,255,0.08), rgba(255,255,255,0.025)),
        var(--panel);
    }

    .flow-row {
      position: relative;
      display: grid;
      grid-template-columns: auto 1fr auto;
      align-items: center;
      gap: 0.95rem;
      padding: 1rem;
      border: 1px solid var(--line);
      border-radius: 18px;
      background: rgba(255,255,255,0.035);
      overflow: hidden;
    }

    .flow-row::after {
      content: "";
      position: absolute;
      left: 2.1rem;
      top: 100%;
      height: 1rem;
      border-left: 1px solid rgba(37,99,235,0.45);
    }

    .flow-row:last-child::after {
      display: none;
    }

    .flow-num {
      width: 2.25rem;
      height: 2.25rem;
      border-radius: 12px;
      border: 1px solid rgba(37,99,235,0.42);
      display: grid;
      place-items: center;
      color: #FFFFFF;
      background: linear-gradient(135deg, var(--blue), #0F3EB7);
      font-weight: 900;
      box-shadow: 0 12px 28px rgba(37,99,235,0.24);
    }

    .flow-row strong {
      display: block;
      font-family: var(--font-heading);
      margin-bottom: 0.15rem;
      letter-spacing: -0.035em;
    }

    .flow-row span {
      display: block;
      color: var(--muted);
      font-size: 0.88rem;
      line-height: 1.45;
    }

    .flow-status {
      color: var(--blue-2);
      font-size: 0.7rem;
      font-weight: 900;
      letter-spacing: 0.14em;
      text-transform: uppercase;
    }

    /* ---------------------------------------------------------------------
       Pricing
    --------------------------------------------------------------------- */
    .price-card {
      display: flex;
      flex-direction: column;
    }

    .price-card.featured {
      border-color: rgba(37,99,235,0.55);
      background:
        radial-gradient(circle at 50% -10%, rgba(37,99,235,0.28), transparent 36%),
        linear-gradient(145deg, rgba(255,255,255,0.1), rgba(255,255,255,0.025)),
        var(--panel);
      box-shadow: var(--shadow), var(--shadow-blue);
    }

    .price-top {
      display: flex;
      align-items: flex-start;
      justify-content: space-between;
      gap: 1rem;
      margin-bottom: 1rem;
    }

    .price {
      margin: 0.8rem 0 0.95rem;
      font-family: var(--font-heading);
      font-size: clamp(1.8rem, 3.2vw, 2.3rem);
      line-height: 1;
      letter-spacing: -0.075em;
    }

    .price small {
      font-family: var(--font-body);
      font-size: 0.78rem;
      color: var(--muted);
      letter-spacing: 0;
      font-weight: 700;
    }

    .price-card .btn {
      width: 100%;
      margin-top: 1.1rem;
    }

    /* ---------------------------------------------------------------------
       Industry Cards / CTA / Contact
    --------------------------------------------------------------------- */
    .industry-card .card-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 1rem;
      min-height: 6.4rem;
    }

    .industry-card h3 {
      font-size: 1rem;
    }

    .industry-card span {
      width: 2rem;
      height: 2rem;
      display: grid;
      place-items: center;
      border-radius: 999px;
      border: 1px solid var(--line);
      color: var(--blue-2);
      background: rgba(37,99,235,0.08);
      flex: 0 0 auto;
    }

    .cta-shell {
      position: relative;
      overflow: hidden;
      border: 1px solid rgba(37,99,235,0.35);
      border-radius: calc(var(--radius-xl) + 10px);
      padding: clamp(1.4rem, 4vw, 3.2rem);
      background:
        radial-gradient(circle at 12% 8%, rgba(37,99,235,0.34), transparent 32%),
        radial-gradient(circle at 88% 80%, rgba(139,148,158,0.14), transparent 34%),
        linear-gradient(145deg, rgba(255,255,255,0.1), rgba(255,255,255,0.026)),
        var(--panel);
      box-shadow: var(--shadow), var(--shadow-blue);
    }

    .cta-shell::before {
      content: "";
      position: absolute;
      inset: 0;
      background-image:
        linear-gradient(to right, rgba(255,255,255,0.075) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(255,255,255,0.06) 1px, transparent 1px);
      background-size: 58px 58px;
      mask-image: linear-gradient(120deg, rgba(0,0,0,0.9), transparent 62%);
      pointer-events: none;
    }

    .cta-grid {
      position: relative;
      z-index: 1;
      display: grid;
      grid-template-columns: minmax(0, 1fr) auto;
      gap: 2rem;
      align-items: center;
    }

    .cta-grid h2 {
      font-family: var(--font-heading);
      font-size: clamp(2.1rem, 5vw, 4.6rem);
      line-height: 0.98;
      letter-spacing: -0.075em;
      margin-bottom: 1rem;
      max-width: 820px;
    }

    .cta-grid p {
      max-width: 680px;
      margin-bottom: 0;
    }

    .contact-grid {
      display: grid;
      grid-template-columns: minmax(0, 0.9fr) minmax(320px, 1.1fr);
      gap: 1rem;
      align-items: stretch;
    }

    .contact-panel,
    .contact-form {
      padding: clamp(1.3rem, 3vw, 2.2rem);
    }

    .contact-panel h2,
    .contact-form h3 {
      font-family: var(--font-heading);
      letter-spacing: -0.055em;
    }

    .contact-panel h2 {
      font-size: clamp(2rem, 4vw, 3.65rem);
      line-height: 1;
      margin-bottom: 1rem;
    }

    .contact-options {
      display: grid;
      gap: 0.82rem;
      margin-top: 1.6rem;
    }

    .contact-option {
      display: flex;
      gap: 0.85rem;
      align-items: flex-start;
      padding: 1rem;
      border: 1px solid var(--line);
      border-radius: 18px;
      background: rgba(255,255,255,0.035);
    }

    .contact-option strong {
      display: block;
      margin-bottom: 0.18rem;
      font-family: var(--font-heading);
      letter-spacing: -0.035em;
    }

    .contact-option span {
      display: block;
      color: var(--muted);
      font-size: 0.9rem;
      line-height: 1.45;
    }

    .contact-form form {
      display: grid;
      gap: 0.9rem;
      margin-top: 1rem;
    }

    .form-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 0.9rem;
    }

    .field {
      display: grid;
      gap: 0.42rem;
    }

    .field label {
      color: var(--muted-2);
      font-size: 0.78rem;
      font-weight: 800;
      letter-spacing: 0.08em;
      text-transform: uppercase;
    }

    .field input,
    .field select,
    .field textarea {
      width: 100%;
      border: 1px solid var(--line);
      border-radius: 14px;
      padding: 0.88rem 0.9rem;
      background: rgba(255,255,255,0.048);
      color: var(--text);
      font: inherit;
      outline: none;
      transition: border-color 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
    }

    .field textarea {
      min-height: 8.5rem;
      resize: vertical;
    }

    .field input:focus,
    .field select:focus,
    .field textarea:focus {
      border-color: rgba(37,99,235,0.58);
      box-shadow: 0 0 0 4px rgba(37,99,235,0.12);
      background: rgba(255,255,255,0.065);
    }

    .field ::placeholder {
      color: color-mix(in srgb, var(--muted) 80%, transparent);
    }

    .form-note {
      margin: 0.2rem 0 0;
      color: var(--muted);
      font-size: 0.82rem;
      line-height: 1.5;
    }

    /* ---------------------------------------------------------------------
       Footer
    --------------------------------------------------------------------- */
    .site-footer {
      border-top: 1px solid var(--line);
      padding: 2.2rem 0;
      background: rgba(0,0,0,0.08);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1fr auto;
      align-items: center;
      gap: 1.4rem;
    }

    .footer-links {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: flex-end;
      gap: 0.85rem 1rem;
      color: var(--muted);
      font-size: 0.86rem;
      font-weight: 700;
    }

    .footer-links a:hover {
      color: var(--text);
    }

    .copyright {
      margin: 1rem 0 0;
      color: var(--muted);
      font-size: 0.82rem;
    }

    /* ---------------------------------------------------------------------
       Responsive
    --------------------------------------------------------------------- */
    @media (max-width: 1024px) {
      .hero-grid,
      .philosophy-shell,
      .contact-grid,
      .section-head {
        grid-template-columns: 1fr;
      }

      .hero-panel {
        min-height: auto;
      }

      .grid-4 {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }
    }

    @media (max-width: 880px) {
      .nav-toggle-btn {
        display: inline-flex;
      }

      .nav-menu,
      .nav-actions {
        position: fixed;
        left: 1rem;
        right: 1rem;
        display: grid;
        opacity: 0;
        visibility: hidden;
        transform: translateY(-0.65rem);
        transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s ease;
      }

      .nav-menu {
        top: calc(var(--nav-h) + 0.8rem);
        padding: 0.9rem;
        border: 1px solid var(--line);
        border-radius: 22px;
        background: color-mix(in srgb, var(--bg) 94%, transparent);
        backdrop-filter: blur(22px);
        box-shadow: var(--shadow);
      }

      @media (max-width: 880px) {
        .nav-menu {
          top: calc(var(--nav-h) + 0.8rem);
        }
      
        .nav-actions {
          top: calc(var(--nav-h) + 24rem);
          grid-template-columns: 1fr 1fr;
        }
      }

      .nav-actions .btn {
        width: 100%;
      }

      .nav-toggle:checked ~ .nav-toggle-btn span {
        background: transparent;
      }

      .nav-toggle:checked ~ .nav-toggle-btn span::before {
        transform: translateY(0.36rem) rotate(45deg);
      }

      .nav-toggle:checked ~ .nav-toggle-btn span::after {
        transform: translateY(-0.36rem) rotate(-45deg);
      }

      .nav-toggle:checked ~ .nav-menu,
      .nav-toggle:checked ~ .nav-actions {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
      }

      .nav-link {
        padding: 0.9rem 1rem;
      }

      .grid-3 {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }

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

      .cta-grid .btn-row {
        justify-content: flex-start;
      }
    }

    @media (max-width: 640px) {
      :root {
        --section-y: 4rem;
      }

      .container {
        width: min(100% - 1.1rem, var(--container));
      }

      .brand-name {
        font-size: 0.86rem;
        letter-spacing: 0.2em;
      }

      .brand-sub {
        display: none;
      }

      .hero h1 {
        font-size: clamp(2.65rem, 16vw, 4rem);
      }

      .grid-2,
      .grid-3,
      .grid-4,
      .form-grid,
      .system-footer {
        grid-template-columns: 1fr;
      }

      .hero-meta {
        align-items: stretch;
      }

      .mini-stat,
      .btn-row .btn {
        width: 100%;
      }

      .dashboard-grid {
        grid-template-columns: 1fr;
        grid-template-rows: auto;
        min-height: 0;
      }

      .module,
      .module-wide,
      .module-tall,
      .module-mid,
      .module-small {
        grid-column: auto;
        grid-row: auto;
      }

      .node-map {
        min-height: 140px;
      }

      .flow-row {
        grid-template-columns: auto 1fr;
      }

      .flow-status {
        grid-column: 2;
      }

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

      .footer-links {
        justify-content: flex-start;
      }
    }

    @media (prefers-reduced-motion: reduce) {
      html {
        scroll-behavior: auto;
      }

      *, *::before, *::after {
        animation-duration: 0.001ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.001ms !important;
      }
    }
  
    .brand-logo {
      width: 285px;
      height: auto;
      display: block;
      object-fit: contain;
    }
    
    @media (max-width: 640px) {
      .brand-logo {
        width: 178px;
      }
    }