:root {
      --green: #007a5e;
      --green-dark: #005a45;
      --green-light: #00a878;
      --gold: #c9a227;
      --gold-light: #f0c94a;
      --white: #ffffff;
      --gray-50: #f8fafc;
      --gray-100: #f1f5f9;
      --gray-200: #e2e8f0;
      --gray-600: #475569;
      --gray-800: #1e293b;
      --gray-900: #0f172a;
    }

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

    html { scroll-behavior: smooth; }

    body {
      font-family: 'Sarabun', 'Inter', sans-serif;
      color: var(--gray-800);
      background: var(--white);
      overflow-x: hidden;
    }

    /* ──────────────────────────────────────────────
       NAVBAR
    ────────────────────────────────────────────── */
    nav {
      position: fixed;
      top: 0; left: 0; right: 0;
      z-index: 1000;
      background: rgba(0, 90, 69, 0.97);
      backdrop-filter: blur(8px);
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 0 2rem;
      height: 68px;
      box-shadow: 0 2px 20px rgba(0,0,0,0.3);
    }

    .nav-brand {
      display: flex;
      align-items: center;
      gap: 0.75rem;
      text-decoration: none;
    }

    .nav-logo-circle {
      width: 42px; height: 42px;
      background: linear-gradient(135deg, var(--gold), var(--gold-light));
      border-radius: 50%;
      display: flex; align-items: center; justify-content: center;
      font-weight: 800;
      font-size: 1rem;
      color: var(--green-dark);
      flex-shrink: 0;
    }

    .nav-title {
      display: flex;
      flex-direction: column;
      line-height: 1.2;
    }

    .nav-title span:first-child {
      font-size: 1rem;
      font-weight: 700;
      color: var(--white);
      letter-spacing: 0.5px;
    }

    .nav-title span:last-child {
      font-size: 0.7rem;
      color: var(--gold-light);
      font-weight: 400;
    }

    .nav-links {
      display: flex;
      gap: 0.25rem;
      list-style: none;
    }

    .nav-links a {
      color: rgba(255,255,255,0.85);
      text-decoration: none;
      font-size: 0.88rem;
      font-weight: 500;
      padding: 0.45rem 0.85rem;
      border-radius: 6px;
      transition: all 0.2s;
    }

    .nav-links a:hover {
      background: rgba(255,255,255,0.15);
      color: var(--white);
    }

    .nav-cta {
      background: var(--gold) !important;
      color: var(--green-dark) !important;
      font-weight: 700 !important;
      padding: 0.45rem 1.1rem !important;
    }

    .nav-cta:hover {
      background: var(--gold-light) !important;
    }

    /* ──────────────────────────────────────────────
       HERO
    ────────────────────────────────────────────── */
    .hero {
      min-height: 100vh;
      background:
        linear-gradient(135deg, rgba(0,20,12,0.65) 0%, rgba(0,50,35,0.50) 100%),
        url('images/hero-bg.jpg') center/cover no-repeat;
      display: flex;
      align-items: center;
      justify-content: center;
      text-align: center;
      padding: 100px 1.5rem 4rem;
      position: relative;
      overflow: hidden;
    }

    .hero::before {
      content: '';
      position: absolute;
      inset: 0;
      background: radial-gradient(ellipse at center, transparent 30%, rgba(0,40,30,0.4) 100%);
    }

    .hero-content {
      position: relative;
      z-index: 1;
      max-width: 820px;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
      background: rgba(201,162,39,0.2);
      border: 1px solid rgba(201,162,39,0.5);
      color: var(--gold-light);
      font-size: 0.85rem;
      font-weight: 600;
      padding: 0.4rem 1rem;
      border-radius: 50px;
      margin-bottom: 1.5rem;
      letter-spacing: 1px;
      text-transform: uppercase;
    }

    .hero h1 {
      font-size: clamp(2.2rem, 5vw, 3.8rem);
      font-weight: 800;
      color: var(--white);
      line-height: 1.2;
      margin-bottom: 0.5rem;
    }

    .hero h1 .highlight {
      color: var(--gold-light);
    }

    .hero h2 {
      font-size: clamp(1rem, 2.5vw, 1.4rem);
      font-weight: 400;
      color: rgba(255,255,255,0.75);
      margin-bottom: 1.5rem;
    }

    .hero-desc {
      font-size: 1.1rem;
      color: rgba(255,255,255,0.85);
      line-height: 1.8;
      max-width: 600px;
      margin: 0 auto 2.5rem;
    }

    .hero-stats {
      display: flex;
      justify-content: center;
      gap: 2.5rem;
      margin-bottom: 2.5rem;
      flex-wrap: wrap;
    }

    .stat {
      text-align: center;
    }

    .stat-num {
      display: block;
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--gold-light);
      line-height: 1;
    }

    .stat-label {
      font-size: 0.8rem;
      color: rgba(255,255,255,0.7);
      text-transform: uppercase;
      letter-spacing: 1px;
      margin-top: 0.25rem;
    }

    .hero-buttons {
      display: flex;
      gap: 1rem;
      justify-content: center;
      flex-wrap: wrap;
    }

    .btn-primary {
      background: linear-gradient(135deg, var(--gold), var(--gold-light));
      color: var(--green-dark);
      font-weight: 700;
      font-size: 1rem;
      padding: 0.85rem 2rem;
      border-radius: 8px;
      text-decoration: none;
      transition: all 0.3s;
      box-shadow: 0 4px 15px rgba(201,162,39,0.4);
    }

    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 25px rgba(201,162,39,0.5);
    }

    .btn-outline {
      background: transparent;
      color: var(--white);
      font-weight: 600;
      font-size: 1rem;
      padding: 0.85rem 2rem;
      border-radius: 8px;
      border: 2px solid rgba(255,255,255,0.6);
      text-decoration: none;
      transition: all 0.3s;
    }

    .btn-outline:hover {
      background: rgba(255,255,255,0.1);
      border-color: var(--white);
    }

    /* ──────────────────────────────────────────────
       SECTION BASE
    ────────────────────────────────────────────── */
    section {
      padding: 80px 1.5rem;
    }

    .container {
      max-width: 1100px;
      margin: 0 auto;
    }

    .section-label {
      display: inline-block;
      background: linear-gradient(135deg, var(--green), var(--green-light));
      color: var(--white);
      font-size: 0.75rem;
      font-weight: 700;
      letter-spacing: 2px;
      text-transform: uppercase;
      padding: 0.3rem 0.9rem;
      border-radius: 4px;
      margin-bottom: 0.85rem;
    }

    .section-title {
      font-size: clamp(1.7rem, 3.5vw, 2.4rem);
      font-weight: 800;
      color: var(--gray-900);
      margin-bottom: 0.5rem;
      line-height: 1.3;
    }

    .section-title-en {
      font-size: 1rem;
      font-weight: 400;
      color: var(--gray-600);
      margin-bottom: 1.25rem;
    }

    .section-line {
      width: 50px;
      height: 4px;
      background: linear-gradient(90deg, var(--green), var(--gold));
      border-radius: 2px;
      margin-bottom: 2rem;
    }

    /* ──────────────────────────────────────────────
       ABOUT / HISTORY
    ────────────────────────────────────────────── */
    #about {
      background: var(--gray-50);
    }

    .about-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 4rem;
      align-items: center;
    }

    .about-text p {
      color: var(--gray-600);
      line-height: 1.9;
      font-size: 1rem;
      margin-bottom: 1.1rem;
    }

    .about-highlights {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 1rem;
      margin-top: 1.5rem;
    }

    .highlight-card {
      background: var(--white);
      border: 1px solid var(--gray-200);
      border-radius: 12px;
      padding: 1.25rem;
      text-align: center;
      box-shadow: 0 2px 8px rgba(0,0,0,0.05);
      transition: transform 0.2s;
    }

    .highlight-card:hover {
      transform: translateY(-3px);
    }

    .highlight-card .icon {
      font-size: 1.8rem;
      margin-bottom: 0.5rem;
    }

    .highlight-card .num {
      font-size: 1.8rem;
      font-weight: 800;
      color: var(--green);
      line-height: 1;
    }

    .highlight-card .label {
      font-size: 0.8rem;
      color: var(--gray-600);
      margin-top: 0.2rem;
    }

    .about-visual {
      position: relative;
    }

    .about-image-main {
      width: 100%;
      border-radius: 16px;
      object-fit: cover;
      height: 400px;
      box-shadow: 0 20px 60px rgba(0,0,0,0.15);
    }

    .about-badge-float {
      position: absolute;
      bottom: -20px;
      left: -20px;
      background: linear-gradient(135deg, var(--green), var(--green-light));
      color: var(--white);
      padding: 1.2rem 1.5rem;
      border-radius: 14px;
      box-shadow: 0 8px 30px rgba(0,90,69,0.4);
      text-align: center;
    }

    .about-badge-float .big {
      font-size: 2.2rem;
      font-weight: 800;
      line-height: 1;
    }

    .about-badge-float .small {
      font-size: 0.78rem;
      opacity: 0.9;
    }

    /* ──────────────────────────────────────────────
       POLICY STRIP
    ────────────────────────────────────────────── */
    .policy-strip {
      background: linear-gradient(135deg, var(--green-dark), var(--green));
      color: var(--white);
      padding: 50px 1.5rem;
    }

    .policy-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2rem;
      max-width: 1100px;
      margin: 0 auto;
    }

    .policy-item {
      text-align: center;
      padding: 1.5rem;
    }

    .policy-item .policy-icon {
      font-size: 2.5rem;
      margin-bottom: 0.75rem;
    }

    .policy-item h3 {
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 0.5rem;
    }

    .policy-item p {
      font-size: 0.88rem;
      opacity: 0.85;
      line-height: 1.7;
    }

    /* ──────────────────────────────────────────────
       SERVICES / FLEET
    ────────────────────────────────────────────── */
    #services {
      background: var(--white);
    }

    .fleet-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.75rem;
      margin-top: 0.5rem;
    }

    .fleet-card {
      background: var(--white);
      border: 1px solid var(--gray-200);
      border-radius: 16px;
      overflow: hidden;
      box-shadow: 0 4px 20px rgba(0,0,0,0.06);
      transition: all 0.3s;
    }

    .fleet-card:hover {
      transform: translateY(-6px);
      box-shadow: 0 12px 40px rgba(0,90,69,0.15);
      border-color: var(--green-light);
    }

    .fleet-card-img {
      width: 100%;
      height: 200px;
      object-fit: cover;
      background: var(--gray-100);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 4rem;
    }

    .fleet-card-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .fleet-card-body {
      padding: 1.4rem;
    }

    .fleet-tag {
      display: inline-block;
      background: rgba(0,122,94,0.1);
      color: var(--green);
      font-size: 0.72rem;
      font-weight: 700;
      letter-spacing: 1px;
      text-transform: uppercase;
      padding: 0.2rem 0.6rem;
      border-radius: 4px;
      margin-bottom: 0.6rem;
    }

    .fleet-card-body h3 {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--gray-900);
      margin-bottom: 0.5rem;
    }

    .fleet-card-body p {
      font-size: 0.88rem;
      color: var(--gray-600);
      line-height: 1.7;
    }

    .fleet-features {
      display: flex;
      flex-wrap: wrap;
      gap: 0.4rem;
      margin-top: 1rem;
    }

    .feature-tag {
      background: var(--gray-100);
      color: var(--gray-600);
      font-size: 0.72rem;
      font-weight: 600;
      padding: 0.2rem 0.6rem;
      border-radius: 4px;
    }

    /* ──────────────────────────────────────────────
       MANAGEMENT
    ────────────────────────────────────────────── */
    #management {
      background: var(--gray-50);
    }

    .mgmt-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 2rem;
      max-width: 680px;
      margin: 0 auto;
    }

    .mgmt-card {
      background: var(--white);
      border-radius: 16px;
      padding: 2.5rem 2rem;
      text-align: center;
      box-shadow: 0 4px 20px rgba(0,0,0,0.07);
      border: 1px solid var(--gray-200);
      transition: all 0.3s;
    }

    .mgmt-card:hover {
      transform: translateY(-4px);
      box-shadow: 0 12px 40px rgba(0,90,69,0.12);
    }

    .mgmt-avatar {
      width: 90px;
      height: 90px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--green), var(--green-light));
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 2.2rem;
      margin: 0 auto 1.25rem;
      box-shadow: 0 6px 20px rgba(0,90,69,0.3);
    }

    .mgmt-card h3 {
      font-size: 1.2rem;
      font-weight: 700;
      color: var(--gray-900);
      margin-bottom: 0.4rem;
    }

    .mgmt-position {
      display: inline-block;
      background: linear-gradient(135deg, var(--green), var(--green-light));
      color: var(--white);
      font-size: 0.8rem;
      font-weight: 600;
      padding: 0.3rem 0.9rem;
      border-radius: 50px;
      margin-bottom: 0.35rem;
    }

    .mgmt-position-en {
      font-size: 0.78rem;
      color: var(--gray-600);
    }

    /* ──────────────────────────────────────────────
       CUSTOMERS
    ────────────────────────────────────────────── */
    #customers {
      background: var(--white);
    }

    .customers-intro {
      text-align: center;
      max-width: 600px;
      margin: 0 auto 2.5rem;
      color: var(--gray-600);
      line-height: 1.8;
    }

    .customers-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 0.9rem;
    }

    .customer-chip {
      background: var(--gray-50);
      border: 1px solid var(--gray-200);
      border-radius: 10px;
      padding: 0.9rem 1rem;
      font-size: 0.82rem;
      font-weight: 600;
      color: var(--gray-800);
      text-align: center;
      transition: all 0.2s;
      line-height: 1.4;
    }

    .customer-chip:hover {
      background: rgba(0,122,94,0.08);
      border-color: var(--green-light);
      color: var(--green-dark);
    }

    /* ──────────────────────────────────────────────
       CONTACT
    ────────────────────────────────────────────── */
    #contact {
      background: var(--gray-900);
      color: var(--white);
    }

    #contact .section-title {
      color: var(--white);
    }

    #contact .section-title-en {
      color: rgba(255,255,255,0.6);
    }

    .contact-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 4rem;
      align-items: start;
    }

    .contact-info-items {
      display: flex;
      flex-direction: column;
      gap: 1.5rem;
    }

    .contact-item {
      display: flex;
      gap: 1rem;
      align-items: flex-start;
    }

    .contact-icon {
      width: 48px;
      height: 48px;
      background: linear-gradient(135deg, var(--green), var(--green-light));
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.3rem;
      flex-shrink: 0;
    }

    .contact-item-body h4 {
      font-size: 0.82rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1px;
      color: var(--gold-light);
      margin-bottom: 0.3rem;
    }

    .contact-item-body p, .contact-item-body a {
      font-size: 1rem;
      color: rgba(255,255,255,0.85);
      line-height: 1.6;
      text-decoration: none;
    }

    .contact-item-body a:hover {
      color: var(--gold-light);
    }

    .map-placeholder {
      background: rgba(255,255,255,0.05);
      border: 1px solid rgba(255,255,255,0.1);
      border-radius: 16px;
      overflow: hidden;
      height: 380px;
    }

    .map-placeholder iframe {
      width: 100%;
      height: 100%;
      border: none;
      filter: grayscale(30%) invert(90%) hue-rotate(170deg);
    }

    /* ──────────────────────────────────────────────
       FOOTER
    ────────────────────────────────────────────── */
    footer {
      background: #060f0b;
      padding: 2rem 1.5rem;
      text-align: center;
    }

    footer .footer-logo {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--gold-light);
      margin-bottom: 0.5rem;
    }

    footer p {
      color: rgba(255,255,255,0.4);
      font-size: 0.82rem;
    }

    /* ──────────────────────────────────────────────
       RESPONSIVE
    ────────────────────────────────────────────── */
    @media (max-width: 900px) {
      .nav-links { display: none; }

      .about-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
      }

      .about-visual { order: -1; }

      .about-badge-float {
        left: 10px; bottom: 10px;
      }

      .policy-grid { grid-template-columns: 1fr; gap: 0; }

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

      .mgmt-grid { grid-template-columns: 1fr 1fr; max-width: 100%; }

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

      .contact-grid { grid-template-columns: 1fr; gap: 2.5rem; }
    }

    @media (max-width: 560px) {
      .fleet-grid { grid-template-columns: 1fr; }
      .hero-stats { gap: 1.5rem; }
      .about-highlights { grid-template-columns: 1fr 1fr; }
      .customers-grid { grid-template-columns: 1fr 1fr; }
    }