:root {
      --ink: #101411;
      --charcoal: #0d0f0e;
      --paper: #f7f8f3;
      --muted: #6d756e;
      --line: rgba(16, 20, 17, .14);
      --green: #8dbf68;
      --moss: #52715c;
      --white: #ffffff;
    }

    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      font-family: Arial, Helvetica, sans-serif;
      color: var(--ink);
      background: var(--paper);
      letter-spacing: 0;
    }

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

    .hero {
      min-height: 94vh;
      position: relative;
      color: var(--white);
      overflow: hidden;
      background:
        linear-gradient(rgba(0,0,0,.4), rgba(0,0,0,.4)),
        url("assets/hero.jpg") center/cover;
    }

    .hero::after {
      content: "";
      position: absolute;
      inset: 0;
      background-image:
        linear-gradient(rgba(255,255,255,.045) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
      background-size: 76px 76px;
      mask-image: linear-gradient(to bottom, rgba(0,0,0,.7), transparent 82%);
      pointer-events: none;
    }

    .nav {
      position: relative;
      z-index: 2;
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 32px clamp(24px, 7vw, 92px);
      font-size: 12px;
      font-weight: 700;
      text-transform: uppercase;
    }

    .brand {
      display: flex;
      align-items: center;
    }

    .nav-links {
      display: flex;
      gap: 28px;
      color: rgba(255,255,255,.78);
    }

    .nav-links a {
      transition: color .25s ease, transform .25s ease;
    }

    .nav-links a:hover {
      color: var(--green);
      transform: translateY(-2px);
    }

    .hero-content {
      position: relative;
      z-index: 1;
      width: min(1100px, calc(100% - 48px));
      margin: 13vh auto 0;
      text-align: center;
    }

    .hero-content > div {
      display: flex;
      flex-direction: column;
      align-items: center;
    }

    .kicker {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 16px;
      font-size: 11px;
      font-weight: 800;
      text-transform: uppercase;
      color: rgba(255,255,255,.78);
    }

    .kicker::before {
      content: "";
      width: 32px;
      height: 1px;
      background: currentColor;
    }

    h1 {
      margin: 22px 0 20px;
      max-width: 890px;
      font-size: clamp(44px, 8vw, 104px);
      line-height: .92;
      text-transform: uppercase;
      letter-spacing: 0;
    }

    .hero p {
      max-width: 620px;
      color: rgba(255,255,255,.77);
      font-size: 16px;
      line-height: 1.8;
    }

    .button {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 46px;
      margin-top: 24px;
      padding: 0 24px;
      border: 1px solid currentColor;
      font-size: 11px;
      font-weight: 800;
      text-transform: uppercase;
      transition: transform .25s ease, background .25s ease, color .25s ease, border-color .25s ease;
    }

    .button:hover {
      transform: translateY(-3px);
      background: var(--green);
      border-color: var(--green);
      color: var(--charcoal);
    }

    .section {
      padding: 92px clamp(24px, 7vw, 92px);
    }

    .intro {
      display: grid;
      grid-template-columns: .9fr 1.1fr;
      gap: clamp(36px, 7vw, 96px);
      align-items: center;
      background: var(--paper);
    }

    .image-stack {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 28px;
      align-items: end;
    }

    .photo-card {
      min-height: 390px;
      position: relative;
      overflow: hidden;
      background: #dfe7df;
      transition: transform .3s ease, filter .3s ease;
    }

    .photo-card img {
      width: 100%;
      height: 100%;
      min-height: inherit;
      display: block;
      object-fit: cover;
      filter: saturate(.9) contrast(1.04);
    }

    .photo-card:nth-child(2) {
      min-height: 330px;
    }

    .photo-card:hover {
      transform: translateY(-8px);
      filter: contrast(1.08);
    }

    .photo-card::after {
      content: "";
      position: absolute;
      inset: 0;
      border: 1px solid rgba(255,255,255,.18);
      pointer-events: none;
    }

    .section-title {
      max-width: 560px;
    }

    .section-title .kicker {
      color: var(--muted);
    }

    h2 {
      margin: 18px 0 26px;
      font-size: clamp(28px, 4vw, 46px);
      line-height: 1.04;
      text-transform: uppercase;
    }

    .section-title p {
      color: var(--muted);
      line-height: 1.85;
      font-size: 15px;
    }

    .dark {
      background: var(--charcoal);
      color: var(--white);
    }

    .services-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      margin-top: 48px;
    }

    .service-card {
      min-height: 230px;
      padding: 30px 26px;
      border: 1px solid rgba(255,255,255,.12);
      background: rgba(255,255,255,.02);
      transition: transform .28s ease, border-color .28s ease, background .28s ease;
    }

    .service-card:hover {
      transform: translateY(-10px);
      border-color: rgba(141,191,104,.75);
      background: rgba(141,191,104,.08);
    }

    .icon {
      width: 36px;
      height: 36px;
      margin-bottom: 24px;
      color: var(--green);
    }

    .service-card h3,
    .insight h3 {
      margin: 0 0 14px;
      font-size: 13px;
      text-transform: uppercase;
    }

    .service-card p {
      margin: 0;
      color: rgba(255,255,255,.62);
      line-height: 1.7;
      font-size: 13px;
    }

    .panels {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      min-height: 430px;
    }

    .panel {
      position: relative;
      display: flex;
      align-items: flex-end;
      padding: 36px;
      color: var(--white);
      overflow: hidden;
      background: center/cover;
      isolation: isolate;
    }

    .panel:nth-child(1) {
      background-image: url("assets/approach-solar.jpg");
    }

    .panel:nth-child(2) {
      background-image: url("assets/approach-office.jpg");
    }

    .panel:nth-child(3) {
      background-image: url("assets/approach-lake.jpg");
    }

    .panel::before {
      content: "";
      position: absolute;
      inset: 0;
      background: rgba(0,0,0,.2);
      transition: background .3s ease;
      z-index: -1;
    }

    .panel:hover::before {
      background: rgba(0,0,0,.2);
    }

    .panel:hover h3 {
      transform: translateY(-8px);
    }

    .panel h3 {
      margin: 0;
      max-width: 220px;
      font-size: 20px;
      line-height: 1.25;
      text-transform: uppercase;
      transition: transform .3s ease;
    }

    .insights-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
      margin-top: 44px;
    }

    .insight {
      border-top: 1px solid var(--line);
      padding-top: 20px;
      transition: transform .25s ease;
    }

    .insight:hover {
      transform: translateY(-6px);
    }

    .insight-thumb {
      height: 170px;
      margin-bottom: 24px;
      background: center/cover;
      position: relative;
      overflow: hidden;
    }

    .insight:nth-child(1) .insight-thumb {
      background-image: url("assets/insight-data.jpg");
    }

    .insight:nth-child(2) .insight-thumb {
      background-image: url("assets/insight-docs.jpg");
    }

    .insight:nth-child(3) .insight-thumb {
      background-image: url("assets/renewable-wind.jpg");
    }

    .insight-thumb::after {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, rgba(0,0,0,.02), rgba(0,0,0,.28));
    }

    .tag {
      display: inline-block;
      margin-bottom: 14px;
      padding: 6px 10px;
      background: var(--charcoal);
      color: var(--white);
      font-size: 10px;
      font-weight: 800;
      text-transform: uppercase;
    }

    .insight p {
      color: var(--muted);
      line-height: 1.7;
      font-size: 13px;
    }

    .cta {
      min-height: 320px;
      display: grid;
      place-items: center;
      text-align: center;
      color: var(--white);
      background:
        linear-gradient(rgba(0,0,0,.64), rgba(0,0,0,.76)),
        url("assets/cta-building.jpg") center/cover;
      padding: 72px 24px;
    }

    .cta h2 {
      margin-bottom: 12px;
    }

    .cta p {
      max-width: 660px;
      margin: 0 auto;
      color: rgba(255,255,255,.7);
      line-height: 1.8;
    }

    footer {
      display: flex;
      justify-content: space-between;
      gap: 24px;
      padding: 30px clamp(24px, 7vw, 92px);
      background: #070807;
      color: rgba(255,255,255,.56);
      font-size: 12px;
    }

    @media (max-width: 900px) {
      .intro {
        grid-template-columns: 1fr;
      }

      .services-grid,
      .insights-grid,
      .panels {
        grid-template-columns: 1fr;
      }

      .nav-links {
        display: none;
      }

      .section {
        padding-block: 70px;
      }
    }

    @media (max-width: 560px) {
      .hero {
        min-height: 88vh;
      }

      .image-stack {
        grid-template-columns: 1fr;
      }

      .photo-card,
      .photo-card:nth-child(2) {
        min-height: 260px;
      }

      footer {
        flex-direction: column;
      }
    }