:root {
    --green: #3a8c52;
    --green-light: #52a86b;
    --green-dark: #1f5c34;
    --green-bg: #eef7f1;
    --green-bg2: #dff0e6;
    --gold: #b87a0a;
    --gold-bg: #fdf6e3;
    --charcoal: #1a2b1e;
    --text: #2c3e30;
    --text-muted: #6b7f70;
    --surface: #f6faf7;
    --surface2: #eef5f0;
    --border: rgba(58,140,82,0.15);
    --white: #ffffff;
  }

  * { margin: 0; padding: 0; box-sizing: border-box; }
  html { scroll-behavior: smooth; }
  body { font-family: 'Outfit', sans-serif; background: var(--white); color: var(--text); overflow-x: hidden; }

  /* ── NAV ── */
  nav {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    display: flex; align-items: center; justify-content: space-between;
    padding: 0 6%; height: 74px;
    background: rgba(255,255,255,0.96);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 2px 16px rgba(58,140,82,0.07);
  }
  .nav-logo img { height: 65px; width: auto; }
  .nav-links { display: flex; align-items: center; gap: 2rem; list-style: none; }
  .nav-links a {
    color: var(--text-muted); text-decoration: none;
    font-size: 0.85rem; font-weight: 500;
    letter-spacing: 0.05em; text-transform: uppercase;
    transition: color 0.2s; position: relative;
  }
  .nav-links a::after {
    content: ''; position: absolute; bottom: -4px; left: 0;
    width: 0; height: 2px; background: var(--green); transition: width 0.3s;
  }
  .nav-links a:hover { color: var(--green-dark); }
  .nav-links a:hover::after { width: 100%; }
  .nav-cta {
    background: var(--green) !important; color: var(--white) !important;
    padding: 0.5rem 1.3rem; border-radius: 6px;
    font-weight: 600 !important; box-shadow: 0 4px 14px rgba(58,140,82,0.25);
    transition: background 0.2s !important;
  }
  .nav-cta:hover { background: var(--green-dark) !important; }
  .nav-cta::after { display: none !important; }

  .nav-dropdown { position: relative; }
  .nav-dropdown-menu {
    display: none; position: absolute; top: calc(100% + 10px); left: 50%;
    transform: translateX(-50%);
    background: var(--white); border: 1px solid var(--border);
    border-radius: 10px; padding: 0.5rem 0; min-width: 180px;
    box-shadow: 0 12px 36px rgba(58,140,82,0.12);
  }
  .nav-dropdown:hover .nav-dropdown-menu { display: block; }
  .nav-dropdown-menu a {
    display: block; padding: 0.6rem 1.25rem;
    font-size: 0.84rem; color: var(--text-muted) !important;
  }
  .nav-dropdown-menu a:hover { background: var(--green-bg); color: var(--green-dark) !important; }
  .nav-dropdown-menu a::after { display: none !important; }

  .hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 4px; }
  .hamburger span { display: block; width: 24px; height: 2px; background: var(--text); border-radius: 2px; }

  /* ── HERO ── */
  #home {
    min-height: 100vh; display: flex; align-items: center;
    position: relative; overflow: hidden;
    padding: 130px 6% 90px;
    background: linear-gradient(150deg, #f2faf5 0%, #ffffff 55%, #fffdf5 100%);
  }
  .hero-circle-1 {
    position: absolute; top: -120px; right: -120px;
    width: 650px; height: 650px; border-radius: 50%; pointer-events: none;
    background: radial-gradient(ellipse, rgba(58,140,82,0.09) 0%, transparent 70%);
  }
  .hero-circle-2 {
    position: absolute; bottom: -80px; left: 5%;
    width: 420px; height: 420px; border-radius: 50%; pointer-events: none;
    background: radial-gradient(ellipse, rgba(184,122,10,0.07) 0%, transparent 70%);
  }
  .hero-dots {
    position: absolute; inset: 0; pointer-events: none;
    background-image: radial-gradient(circle, rgba(58,140,82,0.11) 1px, transparent 1px);
    background-size: 38px 38px;
    mask-image: radial-gradient(ellipse 65% 65% at 75% 42%, black 0%, transparent 70%);
  }
  .hero-content { position: relative; z-index: 2; max-width: 740px; }

  .hero-badge {
    display: inline-flex; align-items: center; gap: 0.5rem;
    background: var(--green-bg); border: 1px solid rgba(58,140,82,0.22);
    border-radius: 50px; padding: 0.38rem 1rem;
    font-size: 0.73rem; font-weight: 700; letter-spacing: 0.1em;
    text-transform: uppercase; color: var(--green-dark);
    margin-bottom: 2rem; animation: fadeUp 0.7s ease both;
  }
  .hero-badge::before {
    content: ''; width: 7px; height: 7px; border-radius: 50%;
    background: var(--green); box-shadow: 0 0 8px rgba(58,140,82,0.45);
  }

  h1.hero-title {
    font-family: 'DM Serif Display', serif;
    font-size: clamp(2.8rem, 5.5vw, 4.8rem);
    line-height: 1.08; color: var(--charcoal);
    margin-bottom: 1.5rem; animation: fadeUp 0.7s 0.1s ease both;
  }
  h1.hero-title em { font-style: italic; color: var(--green); }
  h1.hero-title .gold { color: var(--gold); }

  .hero-desc {
    font-size: clamp(1rem, 1.4vw, 1.1rem); line-height: 1.8;
    color: var(--text-muted); max-width: 600px;
    font-weight: 300; margin-bottom: 2rem;
    animation: fadeUp 0.7s 0.18s ease both;
  }

  .hero-sdg {
    display: flex; gap: 0.5rem; flex-wrap: wrap;
    margin-bottom: 2.5rem; animation: fadeUp 0.7s 0.24s ease both;
  }
  .sdg-tag {
    background: var(--gold-bg); border: 1px solid rgba(184,122,10,0.22);
    color: var(--gold); padding: 0.28rem 0.8rem;
    border-radius: 50px; font-size: 0.71rem; font-weight: 700; letter-spacing: 0.06em;
  }

  .hero-buttons { display: flex; gap: 1rem; flex-wrap: wrap; animation: fadeUp 0.7s 0.3s ease both; }
  .btn-primary {
    background: var(--green); color: var(--white);
    padding: 0.9rem 2.2rem; border-radius: 8px;
    font-weight: 700; font-size: 0.95rem; text-decoration: none;
    box-shadow: 0 6px 24px rgba(58,140,82,0.28);
    transition: background 0.2s, transform 0.2s;
  }
  .btn-primary:hover { background: var(--green-dark); transform: translateY(-2px); }
  .btn-secondary {
    border: 2px solid var(--green); color: var(--green-dark);
    padding: 0.875rem 2rem; border-radius: 8px;
    font-weight: 600; font-size: 0.95rem; text-decoration: none;
    transition: all 0.2s; background: transparent;
  }
  .btn-secondary:hover { background: var(--green-bg); transform: translateY(-2px); }

  /* Float cards */
  .hero-float-cards {
    position: absolute; right: 6%; top: 50%; transform: translateY(-50%);
    display: flex; flex-direction: column; gap: 1.2rem; z-index: 2;
    animation: fadeUp 0.7s 0.4s ease both;
  }
  .float-card {
    background: var(--white); border: 1px solid var(--border);
    border-radius: 14px; padding: 1.2rem 1.6rem;
    box-shadow: 0 8px 30px rgba(58,140,82,0.1);
    display: flex; align-items: center; gap: 1rem; min-width: 210px;
    transition: transform 0.3s, box-shadow 0.3s;
  }
  .float-card:hover { transform: translateX(-4px); box-shadow: 0 14px 40px rgba(58,140,82,0.14); }
  .float-icon {
    width: 44px; height: 44px; border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.25rem; flex-shrink: 0;
  }
  .fi-green { background: var(--green-bg2); }
  .fi-gold  { background: var(--gold-bg); }
  .float-card-title { font-size: 1.05rem; font-weight: 700; color: var(--charcoal); display: block; }
  .float-card-sub { font-size: 0.7rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.06em; }

  /* ── SECTION COMMONS ── */
  section { padding: 100px 6%; }
  .section-label {
    font-size: 0.7rem; font-weight: 700; letter-spacing: 0.16em;
    text-transform: uppercase; color: var(--green); margin-bottom: 0.7rem;
  }
  .section-title {
    font-family: 'DM Serif Display', serif;
    font-size: clamp(1.9rem, 3.5vw, 2.8rem);
    color: var(--charcoal); line-height: 1.15; margin-bottom: 1.2rem;
  }
  .section-title em { font-style: italic; color: var(--green); }
  .section-desc { font-size: 1rem; line-height: 1.82; color: var(--text-muted); max-width: 660px; font-weight: 300; }
  .divider {
    width: 52px; height: 3px;
    background: linear-gradient(90deg, var(--green), var(--gold));
    margin: 1.2rem 0; border-radius: 3px;
  }

  /* ── ABOUT ── */
  #about { background: var(--surface); }
  .about-grid {
    display: grid; grid-template-columns: 1fr 1fr;
    gap: 5rem; align-items: center; max-width: 1200px; margin: 0 auto;
  }
  .mission-grid { display: flex; flex-direction: column; gap: 1.2rem; margin-top: 2rem; }
  .mission-item {
    display: flex; gap: 1rem; align-items: flex-start;
    padding: 1.2rem 1.4rem; background: var(--white);
    border-radius: 12px; border: 1px solid var(--border);
    border-left: 4px solid var(--green);
    box-shadow: 0 2px 10px rgba(58,140,82,0.05);
    transition: transform 0.2s;
  }
  .mission-item:hover { transform: translateX(4px); }
  .mission-item.carbon { border-left-color: var(--gold); }
  .mission-icon {
    width: 42px; height: 42px; border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.2rem; flex-shrink: 0;
  }
  .mi-green { background: var(--green-bg2); }
  .mi-gold  { background: var(--gold-bg); }
  .mission-item h4 { font-weight: 700; color: var(--charcoal); font-size: 0.95rem; margin-bottom: 0.28rem; }
  .mission-item p { font-size: 0.855rem; color: var(--text-muted); line-height: 1.65; }

  .about-card {
    background: var(--white); border: 1px solid var(--border);
    border-radius: 18px; padding: 2.4rem;
    box-shadow: 0 8px 36px rgba(58,140,82,0.08);
    position: relative; overflow: hidden;
  }
  .about-card::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0;
    height: 4px; background: linear-gradient(90deg, var(--green), var(--gold));
  }
  .about-card-title { font-family: 'DM Serif Display', serif; font-size: 1.45rem; color: var(--charcoal); margin-bottom: 1rem; }
  .about-card p { font-size: 0.9rem; line-height: 1.78; color: var(--text-muted); margin-bottom: 0.9rem; }
  .sdg-list { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 1.4rem; }
  .sdg-chip {
    background: var(--green-bg); border: 1px solid rgba(58,140,82,0.2);
    color: var(--green-dark); padding: 0.33rem 0.85rem;
    border-radius: 50px; font-size: 0.74rem; font-weight: 600;
  }

  /* ── IMPACT STRIP ── */
  .impact-strip {
    background: linear-gradient(135deg, var(--green-dark) 0%, #2e7a46 100%);
    padding: 68px 6%; position: relative; overflow: hidden;
  }
  .impact-strip::before {
    content: ''; position: absolute; top: -60%; right: -8%;
    width: 500px; height: 500px; border-radius: 50%;
    background: rgba(255,255,255,0.04); pointer-events: none;
  }
  .impact-inner {
    max-width: 1200px; margin: 0 auto;
    display: grid; grid-template-columns: repeat(4,1fr);
    gap: 2rem; text-align: center; position: relative;
  }
  .impact-num {
    font-family: 'DM Serif Display', serif; font-size: 2.5rem;
    color: var(--white); display: block; margin-bottom: 0.2rem;
  }
  .impact-sub { font-size: 0.77rem; color: rgba(255,255,255,0.68); text-transform: uppercase; letter-spacing: 0.08em; }

  /* ── SERVICES ── */
  #services { background: var(--white); }
  .services-header { max-width: 1200px; margin: 0 auto 4rem; text-align: center; }
  .services-header .divider { margin: 1rem auto; }
  .services-header .section-desc { margin: 0 auto; }

  .service-tabs { display: flex; justify-content: center; gap: 1rem; margin-bottom: 3rem; flex-wrap: wrap; }
  .service-tab {
    padding: 0.78rem 2.2rem; border-radius: 50px;
    border: 2px solid var(--border); background: var(--surface);
    color: var(--text-muted); font-size: 0.9rem; font-weight: 600;
    cursor: pointer; font-family: 'Outfit', sans-serif; transition: all 0.3s;
  }
  .service-tab.active {
    background: var(--green); color: var(--white);
    border-color: var(--green); box-shadow: 0 6px 22px rgba(58,140,82,0.28);
  }
  .service-tab:not(.active):hover { border-color: var(--green); color: var(--green-dark); background: var(--green-bg); }

  .service-panel { display: none; max-width: 1200px; margin: 0 auto; }
  .service-panel.active { display: block; }

  .service-intro { text-align: center; max-width: 720px; margin: 0 auto 3rem; }
  .service-intro p { font-size: 1rem; line-height: 1.8; color: var(--text-muted); font-weight: 300; }

  /* Sustainability pillars */
  .pillars-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 1.5rem; }
  .pillar-card {
    background: var(--surface); border: 1px solid var(--border);
    border-radius: 16px; padding: 2.2rem;
    transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
    position: relative; overflow: hidden;
  }
  .pillar-card::before {
    content: ''; position: absolute; top: 0; left: 0;
    width: 4px; height: 0;
    background: linear-gradient(180deg, var(--green), var(--gold));
    transition: height 0.4s; border-radius: 0 0 4px 0;
  }
  .pillar-card:hover { transform: translateY(-5px); box-shadow: 0 20px 48px rgba(58,140,82,0.11); border-color: rgba(58,140,82,0.28); }
  .pillar-card:hover::before { height: 100%; }
  .pillar-num { font-family: 'DM Serif Display', serif; font-size: 2.8rem; color: rgba(58,140,82,0.11); line-height: 1; margin-bottom: 1rem; font-style: italic; }
  .pillar-card h3 { font-size: 1.02rem; font-weight: 700; color: var(--charcoal); margin-bottom: 0.7rem; }
  .pillar-card p { font-size: 0.87rem; line-height: 1.74; color: var(--text-muted); }

  /* standards tags */
  .standards { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-top: 1rem; }
  .std-tag {
    background: var(--green-bg); border: 1px solid rgba(58,140,82,0.18);
    color: var(--green-dark); padding: 0.22rem 0.65rem;
    border-radius: 4px; font-size: 0.68rem; font-weight: 700; letter-spacing: 0.04em;
  }

  /* Accessibility panel */
  .access-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; align-items: start; }
  .access-highlight {
    background: var(--surface); border: 1px solid var(--border);
    border-radius: 14px; padding: 2rem; border-top: 4px solid var(--green);
    margin-bottom: 1.4rem; box-shadow: 0 4px 18px rgba(58,140,82,0.06);
  }
  .access-highlight.gold-top { border-top-color: var(--gold); margin-bottom: 0; }
  .access-highlight h3 { font-family: 'DM Serif Display', serif; font-size: 1.3rem; color: var(--charcoal); margin-bottom: 0.85rem; }
  .access-highlight p { font-size: 0.88rem; line-height: 1.76; color: var(--text-muted); margin-bottom: 0.7rem; }

  .access-features { display: flex; flex-direction: column; gap: 1rem; }
  .access-feature {
    display: flex; gap: 0.9rem; align-items: flex-start;
    padding: 1.1rem 1.2rem; background: var(--surface);
    border-radius: 12px; border: 1px solid var(--border);
    transition: transform 0.2s, box-shadow 0.2s;
  }
  .access-feature:hover { transform: translateX(4px); box-shadow: 0 4px 14px rgba(58,140,82,0.08); }
  .feature-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--green); margin-top: 5px; flex-shrink: 0; }
  .access-feature h4 { font-weight: 700; color: var(--charcoal); font-size: 0.9rem; margin-bottom: 0.2rem; }
  .access-feature p { font-size: 0.83rem; color: var(--text-muted); line-height: 1.55; }

  /* ── PROJECTS ── */
  #projects { background: var(--surface); }
  .projects-header { max-width: 1200px; margin: 0 auto 4rem; }
  .projects-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 1.4rem; max-width: 1200px; margin: 0 auto; }
  .project-card {
    background: var(--white); border: 1px solid var(--border);
    border-radius: 16px; padding: 1.9rem;
    box-shadow: 0 2px 10px rgba(58,140,82,0.05);
    transition: transform 0.3s, box-shadow 0.3s;
    display: flex; flex-direction: column;
  }
  .project-card:hover { transform: translateY(-5px); box-shadow: 0 20px 48px rgba(58,140,82,0.11); }
  .project-tag {
    display: inline-block; padding: 0.28rem 0.75rem; border-radius: 50px;
    font-size: 0.68rem; font-weight: 700; letter-spacing: 0.08em;
    text-transform: uppercase; margin-bottom: 1.1rem;
  }
  .tag-access { background: var(--green-bg); color: var(--green-dark); border: 1px solid rgba(58,140,82,0.2); }
  .tag-carbon { background: var(--gold-bg); color: var(--gold); border: 1px solid rgba(184,122,10,0.2); }
  .project-card h3 { font-size: 0.98rem; font-weight: 700; color: var(--charcoal); margin-bottom: 0.7rem; line-height: 1.4; }
  .project-card p { font-size: 0.85rem; line-height: 1.7; color: var(--text-muted); flex: 1; }
  .project-meta {
    margin-top: 1.2rem; padding-top: 1.1rem;
    border-top: 1px solid var(--border);
    display: flex; align-items: center; gap: 0.45rem;
    font-size: 0.75rem; color: var(--text-muted); font-weight: 500;
  }
  .meta-dot { width: 5px; height: 5px; border-radius: 50%; background: var(--green); flex-shrink: 0; }
  .meta-dot.gold { background: var(--gold); }

  /* ── CONTACT ── */
  #contact { background: var(--white); }
  .contact-inner { max-width: 900px; margin: 0 auto; }
  .contact-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 1.5rem; margin-top: 3rem; }
  .contact-card {
    background: var(--surface); border: 1px solid var(--border);
    border-radius: 16px; padding: 2rem; text-align: center;
    box-shadow: 0 4px 18px rgba(58,140,82,0.06);
    transition: transform 0.2s, box-shadow 0.2s;
  }
  .contact-card:hover { transform: translateY(-4px); box-shadow: 0 12px 36px rgba(58,140,82,0.1); }
  .contact-icon {
    width: 56px; height: 56px; border-radius: 14px;
    background: var(--green-bg2); border: 1px solid rgba(58,140,82,0.2);
    display: flex; align-items: center; justify-content: center;
    font-size: 1.4rem; margin: 0 auto 1rem;
  }
  .contact-card h4 { font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--text-muted); margin-bottom: 0.4rem; font-weight: 700; }
  .contact-card p, .contact-card a { color: var(--charcoal); font-size: 0.95rem; font-weight: 600; text-decoration: none; transition: color 0.2s; line-height: 1.5; }
  .contact-card a:hover { color: var(--green); }

  .contact-cta {
    margin-top: 3rem; text-align: center;
    padding: 2.5rem; background: var(--green-bg);
    border-radius: 18px; border: 1px solid rgba(58,140,82,0.18);
  }
  .contact-cta p { font-size: 1.05rem; color: var(--text-muted); margin-bottom: 1.5rem; font-weight: 300; line-height: 1.7; }

  /* ── FOOTER ── */
  footer { background: var(--charcoal); padding: 3.5rem 6%; }
  .footer-inner {
    margin: 0 auto;
    display: flex; justify-content: space-between;
    align-items: center; flex-wrap: wrap; gap: 1.5rem;
  }
  .footer-logo img { height: 65px; filter: brightness(0) invert(1); opacity: 0.8; }
  .footer-links { display: flex; gap: 2rem; list-style: none; flex-wrap: wrap; }
  .footer-links a { color: rgba(255,255,255,0.48); text-decoration: none; font-size: 0.84rem; transition: color 0.2s; }
  .footer-links a:hover { color: rgba(255,255,255,0.85); }
  .footer-copy { font-size: 0.77rem; color: rgba(255,255,255,0.38); }

  /* ── ANIMATIONS ── */
  @keyframes fadeUp { from { opacity:0; transform:translateY(22px); } to { opacity:1; transform:translateY(0); } }
  .reveal { opacity: 0; transform: translateY(26px); transition: opacity 0.7s ease, transform 0.7s ease; }
  .reveal.visible { opacity: 1; transform: translateY(0); }

  /* ── RESPONSIVE ── */
  @media (max-width: 1100px) { .hero-float-cards { display: none; } }
  @media (max-width: 900px) {
    .nav-links { display: none; }
    .nav-links.open {
      display: flex; flex-direction: column;
      position: fixed; top: 74px; left: 0; right: 0;
      background: rgba(255,255,255,0.98); backdrop-filter: blur(16px);
      padding: 2rem; gap: 1.5rem;
      border-bottom: 1px solid var(--border);
      box-shadow: 0 8px 28px rgba(58,140,82,0.09);
    }
    .hamburger { display: flex; }
    .about-grid { grid-template-columns: 1fr; gap: 2.5rem; }
    .pillars-grid, .access-grid { grid-template-columns: 1fr; }
    .projects-grid, .contact-grid { grid-template-columns: 1fr; }
    .impact-inner { grid-template-columns: repeat(2,1fr); }
    .footer-inner { flex-direction: column; text-align: center; }
    .footer-links { justify-content: center; }
  }