/* ========== GLOBAL VARIABLES & RESET ========== */
    :root {
      --green:        #3CB85C;
      --green-light:  #6DD68A;
      --green-dim:    #1C7038;
      --green-dark:   #0D2B16;
      --black:        #060E08;
      --dark:         #0B180F;
      --surface:      #101E14;
      --surface-2:    #162419;
      --border:       rgba(60,184,92,0.16);
      --border-s:     rgba(60,184,92,0.30);
      --text:         #EDF5EF;
      --text-muted:   #7A9A82;
      --text-dim:     #3A5A42;
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      background: var(--black);
      color: var(--text);
      font-family: 'DM Sans', sans-serif;
      font-weight: 300;
      line-height: 1.6;
      overflow-x: hidden;
    }

    /* Canvas particle background */
    #bg-canvas {
      position: fixed;
      inset: 0;
      z-index: 0;
      pointer-events: none;
      opacity: 0.3;
    }

    /* ========== NAVIGATION (identical to main site) ========== */
    nav {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      z-index: 200;
      padding: 0 5vw;
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 76px;
      transition: background 0.5s, backdrop-filter 0.5s, border-color 0.5s;
      border-bottom: 1px solid transparent;
    }

    nav.scrolled {
      background: rgba(6, 14, 8, 0.94);
      backdrop-filter: blur(18px);
      border-color: var(--border);
    }

   
 

    .nav-links a {
      color: var(--text-muted);
      text-decoration: none;
      font-size: 0.8rem;
      font-weight: 400;
      letter-spacing: 0.1em;
      text-transform: uppercase;
      transition: color 0.3s;
    }

    .nav-links a:hover,
    .nav-links a.active {
      color: var(--green);
    }

    .nav-cta {
      border: 1px solid var(--green) !important;
      color: var(--green) !important;
      padding: 8px 22px;
      border-radius: 40px;
      transition: background 0.3s, color 0.3s !important;
    }

    .nav-cta:hover {
      background: var(--green) !important;
      color: var(--black) !important;
    }

    /* Mobile menu */
    .mobile-menu {
      display: none;
      font-size: 1.5rem;
      cursor: pointer;
      color: var(--green);
      z-index: 250;
    }

    @media (max-width: 768px) {
      .mobile-menu {
        display: block;
      }

      .nav-links {
        position: fixed;
        top: 76px;
        left: -100%;
        width: 80%;
        max-width: 320px;
        height: calc(100vh - 76px);
        background: var(--dark);
        flex-direction: column;
        align-items: flex-start;
        padding: 2rem 1.5rem;
        gap: 1rem;
        border-right: 1px solid var(--border);
        transition: left 0.3s ease;
        z-index: 200;
        overflow-y: auto;
      }

      .nav-links.active {
        left: 0;
      }
    }

    /* Dropdown */
    .dropdown {
      position: relative;
      display: inline-block;
    }

    .dropbtn {
      cursor: pointer;
    }

    .dropdown-content {
      display: none;
      position: absolute;
      background: var(--dark);
      min-width: 220px;
      box-shadow: 0 8px 16px rgba(0, 0, 0, 0.3);
      z-index: 1;
      border: 1px solid var(--border);
      border-radius: 12px;
      top: 100%;
      left: 0;
      margin-top: 0.5rem;
    }

    .dropdown-content a {
      color: var(--text-muted);
      padding: 12px 16px;
      text-decoration: none;
      display: block;
      font-size: 0.8rem;
      letter-spacing: 0.05em;
      text-transform: none;
      border-bottom: 1px solid var(--border);
    }

    .dropdown-content a:last-child {
      border-bottom: none;
    }

    .dropdown-content a:hover {
      background: var(--surface);
      color: var(--green);
    }

    .dropdown:hover .dropdown-content {
      display: block;
    }

    /* ========== HERO SECTION (CASE STUDY) ========== */
    .case-hero {
      position: relative;
      z-index: 1;
      min-height: 60vh;
      display: flex;
      align-items: center;
      text-align: center;
      padding: 0 5vw;
      margin-top: 76px;
      background: linear-gradient(115deg, rgba(6, 14, 8, 0.94), rgba(6, 14, 8, 0.88)), url('/img/People\ in\ mining.jpg');
      background-size: cover;
      background-position: center 30%;
    }

    .case-hero-content {
      max-width: 850px;
      margin: 0 auto;
    }

    .case-eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      font-size: 0.75rem;
      font-weight: 500;
      letter-spacing: 0.25em;
      text-transform: uppercase;
      color: var(--green);
      margin-bottom: 1.5rem;
    }

    .case-eyebrow::before {
      content: '';
      width: 40px;
      height: 1px;
      background: var(--green);
    }

    .case-hero h1 {
      font-family: 'Cormorant Garamond', serif;
      font-size: clamp(2.5rem, 5vw, 4rem);
      font-weight: 300;
      line-height: 1.1;
      margin-bottom: 1rem;
    }

    .case-hero h1 span {
      font-style: italic;
      color: var(--green);
    }

    .case-hero p {
      font-size: 1rem;
      color: var(--text-muted);
      max-width: 700px;
      margin: 0 auto;
    }

    /* ========== SECTION STYLES ========== */
    section {
      position: relative;
      z-index: 1;
      padding: 5rem 0;
    }

    .section-inner {
      max-width: 1300px;
      margin: 0 auto;
      padding: 0 5vw;
    }

    .section-light {
      background: var(--surface);
    }

    .two-col {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 3rem;
      align-items: center;
    }

    .section-header {
      text-align: center;
      max-width: 800px;
      margin: 0 auto 3rem auto;
    }

    .section-eyebrow {
      font-size: 0.72rem;
      letter-spacing: 0.25em;
      text-transform: uppercase;
      color: var(--green);
      margin-bottom: 1rem;
      display: inline-flex;
      align-items: center;
      gap: 10px;
    }

    .section-eyebrow::before {
      content: '';
      width: 28px;
      height: 1px;
      background: var(--green);
    }

    h2 {
      font-family: 'Cormorant Garamond', serif;
      font-size: clamp(1.8rem, 3vw, 2.5rem);
      font-weight: 300;
      line-height: 1.2;
      color: var(--text);
      margin-bottom: 1rem;
    }

    h2 em {
      font-style: italic;
      color: var(--green);
    }

    /* Metrics grid */
    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1.5rem;
      margin: 2rem 0;
    }

    .metric-card {
      background: var(--dark);
      border: 1px solid var(--border);
      border-radius: 24px;
      padding: 1.5rem;
      text-align: center;
    }

    .metric-number {
      font-family: 'Syne', sans-serif;
      font-size: 2rem;
      font-weight: 700;
      color: var(--green);
    }

    .metric-label {
      font-size: 0.75rem;
      text-transform: uppercase;
      letter-spacing: 0.05em;
      color: var(--text-muted);
    }

    .disclaimer {
      font-size: 0.7rem;
      color: var(--text-dim);
      text-align: center;
      margin-top: 0.5rem;
    }

    /* Content blocks */
    .content-block {
      background: var(--dark);
      border: 1px solid var(--border);
      border-radius: 28px;
      padding: 2rem;
      margin: 1.5rem 0;
    }

    .content-block h3 {
      font-family: 'Syne', sans-serif;
      font-size: 1.2rem;
      margin-bottom: 1rem;
      color: var(--green);
    }

    .feature-list {
      list-style: none;
    }

    .feature-list li {
      margin-bottom: 0.8rem;
      display: flex;
      align-items: flex-start;
      gap: 0.8rem;
    }

    .feature-list li i {
      color: var(--green);
      margin-top: 0.2rem;
    }

    /* CTA Banner */
    .cta-banner {
      background: var(--green-dark);
      border-radius: 32px;
      padding: 3rem;
      text-align: center;
      border: 1px solid var(--border);
    }

    .btn-primary {
      background: var(--green);
      color: var(--black);
      border: none;
      padding: 12px 32px;
      font-family: 'Syne', sans-serif;
      font-size: 0.8rem;
      font-weight: 700;
      letter-spacing: 0.1em;
      text-transform: uppercase;
      text-decoration: none;
      display: inline-block;
      border-radius: 40px;
      transition: background 0.3s, transform 0.2s;
      margin-top: 1rem;
    }

    .btn-primary:hover {
      background: var(--green-light);
      transform: translateY(-2px);
    }

    /* Animations */
    .reveal {
      opacity: 0;
      transform: translateY(28px);
      transition: opacity 0.7s ease, transform 0.7s ease;
    }

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

    /* Responsive */
    @media (max-width: 992px) {
      .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .two-col {
        grid-template-columns: 1fr;
        gap: 2rem;
      }
    }

    @media (max-width: 768px) {
      .metrics-grid {
        grid-template-columns: 1fr;
      }
    }