:root {
      --primary: #1a5fa8;
      --primary-dark: #134a84;
      --primary-light: #e8f0fb;
      --accent: #00b4a0;
      --accent-dark: #008f7e;
      --gold: #c9a227;
      --text: #1a1a2e;
      --text-light: #555770;
      --bg: #ffffff;
      --bg-soft: #f7f9fc;
      --border: #e2e8f0;
      --radius: 12px;
      --radius-lg: 20px;
      --shadow: 0 4px 24px rgba(26,95,168,0.10);
      --shadow-lg: 0 12px 48px rgba(26,95,168,0.16);
    }
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; }
    body {
      font-family: 'Sarabun', 'Inter', sans-serif;
      color: var(--text);
      background: var(--bg);
      line-height: 1.7;
      font-size: 16px;
    }
    img { max-width: 100%; display: block; }
    a { text-decoration: none; color: inherit; }
    .container { max-width: 1140px; margin: 0 auto; padding: 0 20px; }
    .section { padding: 72px 0; }
    .section-alt { background: var(--bg-soft); }
    .section-title {
      font-size: 2rem;
      font-weight: 700;
      color: var(--text);
      margin-bottom: 12px;
    }
    .section-subtitle {
      font-size: 1.05rem;
      color: var(--text-light);
      margin-bottom: 48px;
    }
    .text-center { text-align: center; }
    .btn {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 14px 28px;
      border-radius: 50px;
      font-size: 1rem;
      font-weight: 600;
      cursor: pointer;
      border: none;
      transition: all 0.25s;
    }
    .btn-primary {
      background: var(--primary);
      color: #fff;
    }
    .btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: var(--shadow); }
    .btn-accent {
      background: var(--accent);
      color: #fff;
    }
    .btn-accent:hover { background: var(--accent-dark); transform: translateY(-2px); }
    .btn-outline {
      background: transparent;
      color: var(--primary);
      border: 2px solid var(--primary);
    }
    .btn-outline:hover { background: var(--primary); color: #fff; }
    .btn-white {
      background: #fff;
      color: var(--primary);
    }
    .btn-white:hover { background: var(--primary-light); }

    /* ============ TOPBAR ============ */
    .topbar {
      background: var(--primary-dark);
      color: #fff;
      font-size: 0.875rem;
      padding: 8px 0;
    }
    .topbar .container {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 6px;
    }
    .topbar a { color: #fff; opacity: 0.9; }
    .topbar a:hover { opacity: 1; }
    .topbar-left, .topbar-right { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }

    /* ============ HEADER ============ */
    header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: #fff;
      box-shadow: 0 2px 16px rgba(0,0,0,0.08);
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 14px 0;
      gap: 20px;
    }
    .logo { display: flex; align-items: center; gap: 12px; }
    .logo-icon {
      width: 48px; height: 48px;
      background: var(--primary);
      border-radius: 12px;
      display: flex; align-items: center; justify-content: center;
      color: #fff; font-size: 1.5rem;
    }
    .logo-text { line-height: 1.2; }
    .logo-name { font-size: 1.05rem; font-weight: 700; color: var(--primary); }
    .logo-sub { font-size: 0.75rem; color: var(--text-light); }
    nav { display: flex; align-items: center; gap: 4px; }
    nav a {
      padding: 8px 14px;
      border-radius: 8px;
      font-size: 0.9rem;
      font-weight: 500;
      color: var(--text);
      transition: all 0.2s;
    }
    nav a:hover { background: var(--primary-light); color: var(--primary); }
    .nav-cta {
      background: var(--primary);
      color: #fff !important;
      padding: 10px 20px !important;
      border-radius: 50px !important;
    }
    .nav-cta:hover { background: var(--primary-dark) !important; }
    .lang-toggle {
      display: flex;
      border: 1px solid var(--border);
      border-radius: 8px;
      overflow: hidden;
      font-size: 0.85rem;
    }
    .lang-btn {
      padding: 6px 12px;
      cursor: pointer;
      font-weight: 600;
      transition: all 0.2s;
      background: none;
      border: none;
    }
    .lang-btn.active { background: var(--primary); color: #fff; }
    .hamburger {
      display: none;
      flex-direction: column;
      gap: 5px;
      cursor: pointer;
      padding: 8px;
    }
    .hamburger span {
      display: block;
      width: 24px; height: 2px;
      background: var(--text);
      border-radius: 2px;
      transition: all 0.3s;
    }

    /* ============ HERO ============ */
    .hero {
      background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, #2980b9 100%);
      color: #fff;
      padding: 88px 0 80px;
      position: relative;
      overflow: hidden;
    }
    .hero::before {
      content: '';
      position: absolute; inset: 0;
      background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.04'%3E%3Ccircle cx='30' cy='30' r='20'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    }
    .hero-inner {
      position: relative;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 60px;
      align-items: center;
    }
    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(255,255,255,0.15);
      border: 1px solid rgba(255,255,255,0.3);
      border-radius: 50px;
      padding: 6px 16px;
      font-size: 0.85rem;
      margin-bottom: 20px;
    }
    .hero h1 {
      font-size: 2.5rem;
      font-weight: 800;
      line-height: 1.25;
      margin-bottom: 16px;
    }
    .hero-sub {
      font-size: 1.05rem;
      opacity: 0.9;
      margin-bottom: 32px;
      line-height: 1.8;
    }
    .hero-sub span { background: rgba(255,255,255,0.15); border-radius: 4px; padding: 2px 8px; margin: 2px; display: inline-block; }
    .hero-btns { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 40px; }
    .hero-stats {
      display: flex;
      gap: 32px;
      padding-top: 32px;
      border-top: 1px solid rgba(255,255,255,0.2);
    }
    .stat-item { text-align: center; }
    .stat-num { font-size: 1.8rem; font-weight: 800; display: block; }
    .stat-label { font-size: 0.8rem; opacity: 0.8; }
    .hero-visual {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .hero-card {
      background: rgba(255,255,255,0.12);
      backdrop-filter: blur(12px);
      border: 1px solid rgba(255,255,255,0.2);
      border-radius: var(--radius-lg);
      padding: 24px;
    }
    .hero-card-title { font-weight: 700; font-size: 1rem; margin-bottom: 12px; }
    .hero-card-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
    .hero-service-tag {
      background: rgba(255,255,255,0.15);
      border-radius: 8px;
      padding: 8px 12px;
      font-size: 0.85rem;
      text-align: center;
    }
    .hero-hours {
      display: flex;
      align-items: center;
      gap: 12px;
      background: rgba(0,180,160,0.25);
      border: 1px solid rgba(0,180,160,0.4);
      border-radius: var(--radius);
      padding: 16px 20px;
    }
    .hours-dot { width: 10px; height: 10px; background: #00e5cc; border-radius: 50%; animation: pulse 2s infinite; }
    @keyframes pulse { 0%,100%{opacity:1;transform:scale(1)} 50%{opacity:0.5;transform:scale(1.3)} }

    /* ============ QUICK BAR ============ */
    .quick-bar { background: var(--primary-dark); padding: 0; }
    .quick-bar-inner {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
    }
    .quick-item {
      display: flex;
      align-items: center;
      gap: 12px;
      padding: 20px 24px;
      color: #fff;
      border-right: 1px solid rgba(255,255,255,0.1);
      transition: background 0.2s;
    }
    .quick-item:hover { background: rgba(255,255,255,0.1); }
    .quick-item:last-child { border-right: none; }
    .quick-icon { font-size: 1.5rem; }
    .quick-label { font-size: 0.8rem; opacity: 0.75; }
    .quick-value { font-size: 0.95rem; font-weight: 600; }

    /* ============ ABOUT ============ */
    .about-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 64px;
      align-items: center;
    }
    .about-img {
      position: relative;
    }
    .about-img-main {
      width: 100%;
      height: 400px;
      background: linear-gradient(135deg, var(--primary-light), #c8dff7);
      border-radius: var(--radius-lg);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 5rem;
      position: relative;
      overflow: hidden;
    }
    .about-badge {
      position: absolute;
      bottom: -16px;
      right: -16px;
      background: #fff;
      border-radius: var(--radius);
      padding: 16px 20px;
      box-shadow: var(--shadow-lg);
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .badge-icon { font-size: 2rem; }
    .badge-text { font-size: 0.8rem; color: var(--text-light); }
    .badge-val { font-size: 1.1rem; font-weight: 700; color: var(--primary); }
    .about-content { }
    .about-tag {
      display: inline-block;
      background: var(--primary-light);
      color: var(--primary);
      font-size: 0.8rem;
      font-weight: 700;
      padding: 4px 14px;
      border-radius: 50px;
      margin-bottom: 16px;
      letter-spacing: 0.05em;
      text-transform: uppercase;
    }
    .about-stats {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 16px;
      margin-top: 36px;
    }
    .about-stat {
      background: var(--bg-soft);
      border-radius: var(--radius);
      padding: 20px;
      border-left: 4px solid var(--primary);
    }
    .about-stat-num { font-size: 1.6rem; font-weight: 800; color: var(--primary); }
    .about-stat-label { font-size: 0.85rem; color: var(--text-light); margin-top: 4px; }

    /* ============ SERVICES ============ */
    .services-tabs {
      display: flex;
      gap: 8px;
      margin-bottom: 40px;
      flex-wrap: wrap;
      justify-content: center;
    }
    .tab-btn {
      padding: 10px 22px;
      border-radius: 50px;
      border: 2px solid var(--border);
      background: #fff;
      font-size: 0.9rem;
      font-weight: 600;
      cursor: pointer;
      transition: all 0.2s;
      color: var(--text-light);
    }
    .tab-btn.active, .tab-btn:hover {
      border-color: var(--primary);
      background: var(--primary);
      color: #fff;
    }
    .services-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .service-card {
      background: #fff;
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      padding: 28px 20px;
      text-align: center;
      transition: all 0.3s;
      cursor: pointer;
      position: relative;
      overflow: hidden;
    }
    .service-card::before {
      content: '';
      position: absolute;
      top: 0; left: 0; right: 0;
      height: 4px;
      background: linear-gradient(90deg, var(--primary), var(--accent));
      transform: scaleX(0);
      transition: transform 0.3s;
    }
    .service-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: var(--primary); }
    .service-card:hover::before { transform: scaleX(1); }
    .service-icon { font-size: 2.5rem; margin-bottom: 12px; }
    .service-name { font-size: 1rem; font-weight: 700; margin-bottom: 6px; color: var(--text); }
    .service-name-en { font-size: 0.8rem; color: var(--text-light); margin-bottom: 10px; }
    .service-tag {
      display: inline-block;
      background: var(--primary-light);
      color: var(--primary);
      font-size: 0.72rem;
      padding: 3px 10px;
      border-radius: 50px;
      font-weight: 600;
    }
    .service-tag-accent {
      background: rgba(0,180,160,0.1);
      color: var(--accent-dark);
    }
    .view-all-wrap { text-align: center; margin-top: 40px; }

    /* ============ WHY US ============ */
    .why-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 28px;
    }
    .why-card {
      background: #fff;
      border-radius: var(--radius-lg);
      padding: 32px;
      border: 1px solid var(--border);
      display: flex;
      gap: 20px;
      align-items: flex-start;
      transition: all 0.3s;
    }
    .why-card:hover { box-shadow: var(--shadow); border-color: var(--primary); }
    .why-icon-wrap {
      width: 60px; height: 60px;
      border-radius: var(--radius);
      background: var(--primary-light);
      display: flex; align-items: center; justify-content: center;
      font-size: 1.75rem;
      flex-shrink: 0;
    }
    .why-title { font-size: 1.05rem; font-weight: 700; margin-bottom: 8px; }
    .why-desc { font-size: 0.9rem; color: var(--text-light); line-height: 1.7; }
    .tech-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
    .tech-tag {
      background: var(--primary-light);
      color: var(--primary);
      font-size: 0.75rem;
      padding: 3px 10px;
      border-radius: 50px;
      font-weight: 600;
    }

    /* ============ SSO BANNER ============ */
    .sso-banner {
      background: linear-gradient(135deg, var(--accent-dark), var(--accent));
      color: #fff;
      border-radius: var(--radius-lg);
      padding: 48px;
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 40px;
      align-items: center;
      margin: 0 0 0 0;
    }
    .sso-title { font-size: 1.75rem; font-weight: 800; margin-bottom: 8px; }
    .sso-desc { opacity: 0.9; font-size: 0.95rem; line-height: 1.7; }
    .sso-services { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
    .sso-tag {
      background: rgba(255,255,255,0.2);
      border: 1px solid rgba(255,255,255,0.3);
      border-radius: 50px;
      padding: 4px 14px;
      font-size: 0.85rem;
    }

    /* ============ REVIEWS ============ */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .review-card {
      background: #fff;
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      overflow: hidden;
      transition: all 0.3s;
    }
    .review-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
    .review-img {
      width: 100%; height: 180px;
      background: linear-gradient(135deg, #f0f4ff, #e8f0fb);
      display: flex; align-items: center; justify-content: center;
      font-size: 3rem;
      color: var(--primary);
    }
    .review-body { padding: 16px; }
    .review-stars { color: #f59e0b; font-size: 0.9rem; margin-bottom: 6px; }
    .review-text { font-size: 0.85rem; color: var(--text-light); line-height: 1.6; }

    /* ============ BLOG ============ */
    .blog-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .blog-card {
      background: #fff;
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      overflow: hidden;
      transition: all 0.3s;
    }
    .blog-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
    .blog-img {
      height: 180px;
      background: linear-gradient(135deg, var(--primary-light), #c8dff7);
      display: flex; align-items: center; justify-content: center;
      font-size: 3rem;
    }
    .blog-body { padding: 20px; }
    .blog-tag {
      display: inline-block;
      background: var(--primary-light);
      color: var(--primary);
      font-size: 0.75rem;
      font-weight: 700;
      padding: 3px 10px;
      border-radius: 50px;
      margin-bottom: 10px;
    }
    .blog-title { font-size: 0.95rem; font-weight: 700; margin-bottom: 8px; line-height: 1.5; }
    .blog-meta { font-size: 0.8rem; color: var(--text-light); }
    .blog-read { color: var(--primary); font-size: 0.85rem; font-weight: 600; margin-top: 12px; display: inline-block; }

    /* ============ CONTACT ============ */
    .contact-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: start;
    }
    .contact-info-list { display: flex; flex-direction: column; gap: 16px; margin-bottom: 32px; }
    .contact-item {
      display: flex;
      align-items: flex-start;
      gap: 16px;
      padding: 16px;
      background: var(--bg-soft);
      border-radius: var(--radius);
    }
    .contact-icon {
      width: 44px; height: 44px;
      background: var(--primary-light);
      border-radius: 10px;
      display: flex; align-items: center; justify-content: center;
      font-size: 1.25rem;
      flex-shrink: 0;
    }
    .contact-label { font-size: 0.8rem; color: var(--text-light); }
    .contact-value { font-size: 0.95rem; font-weight: 600; color: var(--text); }
    .contact-value a { color: var(--primary); }
    .social-row { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 8px; }
    .social-btn {
      display: flex; align-items: center; gap: 8px;
      padding: 10px 18px;
      border-radius: 50px;
      font-size: 0.85rem;
      font-weight: 600;
      transition: all 0.2s;
    }
    .social-line { background: #06C755; color: #fff; }
    .social-line:hover { background: #04a344; transform: translateY(-2px); }
    .social-fb { background: #1877F2; color: #fff; }
    .social-fb:hover { background: #1460cc; transform: translateY(-2px); }
    .social-tiktok { background: #010101; color: #fff; }
    .social-tiktok:hover { background: #333; transform: translateY(-2px); }
    .map-wrap {
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow);
      height: 380px;
      background: #e8eef5;
      display: flex; align-items: center; justify-content: center;
    }
    .map-placeholder {
      text-align: center;
      padding: 40px;
    }
    .map-placeholder .map-icon { font-size: 4rem; margin-bottom: 16px; }
    .map-placeholder p { color: var(--text-light); margin-bottom: 16px; }

    /* ============ FOOTER ============ */
    footer {
      background: var(--text);
      color: rgba(255,255,255,0.8);
      padding: 56px 0 24px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 48px;
      margin-bottom: 48px;
    }
    .footer-logo { font-size: 1.2rem; font-weight: 800; color: #fff; margin-bottom: 12px; }
    .footer-desc { font-size: 0.875rem; line-height: 1.8; }
    .footer-title { font-size: 0.9rem; font-weight: 700; color: #fff; margin-bottom: 16px; }
    .footer-links { display: flex; flex-direction: column; gap: 8px; }
    .footer-links a { font-size: 0.875rem; opacity: 0.8; transition: opacity 0.2s; }
    .footer-links a:hover { opacity: 1; color: #fff; }
    .footer-bottom {
      border-top: 1px solid rgba(255,255,255,0.1);
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 0.8rem;
      opacity: 0.6;
      flex-wrap: wrap;
      gap: 8px;
    }

    /* ============ FLOATING ACTIONS ============ */
    .floating-actions {
      position: fixed;
      bottom: 24px;
      right: 24px;
      display: flex;
      flex-direction: column;
      gap: 12px;
      z-index: 999;
    }
    .float-btn {
      width: 52px; height: 52px;
      border-radius: 50%;
      display: flex; align-items: center; justify-content: center;
      font-size: 1.4rem;
      box-shadow: 0 4px 20px rgba(0,0,0,0.2);
      cursor: pointer;
      transition: all 0.25s;
      border: none;
      color: #fff;
      text-decoration: none;
    }
    .float-btn:hover { transform: scale(1.1); }
    .float-line { background: #06C755; }
    .float-tel { background: var(--primary); }
    .float-label {
      position: absolute;
      right: 60px;
      background: #333;
      color: #fff;
      font-size: 0.75rem;
      padding: 4px 10px;
      border-radius: 6px;
      white-space: nowrap;
      opacity: 0;
      transition: opacity 0.2s;
      pointer-events: none;
    }
    .float-wrap { position: relative; display: flex; align-items: center; }
    .float-wrap:hover .float-label { opacity: 1; }

    /* ============ LANGUAGE CONTENT ============ */
    /* Hide EN content by default — but NOT the lang toggle buttons */
    [data-lang="en"]:not(.lang-btn) { display: none; }
    /* Always show both TH/EN toggle buttons */
    .lang-toggle .lang-btn { display: flex !important; }
    /* Switch to EN mode */
    body.lang-en [data-lang="th"]:not(.lang-btn) { display: none !important; }
    body.lang-en [data-lang="en"]:not(.lang-btn) { display: block; }
    /* Nav links & inline elements restore correct display type */
    body.lang-en nav [data-lang="en"],
    body.lang-en .topbar [data-lang="en"],
    body.lang-en .header-inner [data-lang="en"] { display: flex; }
    body.lang-en span[data-lang="en"],
    body.lang-en a[data-lang="en"],
    body.lang-en label[data-lang="en"] { display: inline; }
    /* Active button highlight */
    body.lang-en .lang-btn[data-lang="en"] { background: var(--primary) !important; color: #fff !important; }
    body.lang-en .lang-btn[data-lang="th"] { background: none !important; color: var(--text) !important; }
    body.lang-th .lang-btn[data-lang="th"] { background: var(--primary) !important; color: #fff !important; }
    body.lang-th .lang-btn[data-lang="en"] { background: none !important; color: var(--text) !important; }

    /* ============ MOBILE ============ */
    @media (max-width: 768px) {
      .section { padding: 48px 0; }
      .section-title { font-size: 1.5rem; }
      .hero { padding: 56px 0; }
      .hero-inner { grid-template-columns: 1fr; gap: 32px; }
      .hero h1 { font-size: 1.75rem; }
      .hero-visual { display: none; }
      .hero-stats { gap: 16px; }
      .quick-bar-inner { grid-template-columns: repeat(2, 1fr); }
      .about-grid { grid-template-columns: 1fr; gap: 32px; }
      .about-img { display: none; }
      .about-stats { grid-template-columns: repeat(2, 1fr); }
      .services-grid { grid-template-columns: repeat(2, 1fr); }
      .why-grid { grid-template-columns: 1fr; }
      .sso-banner { grid-template-columns: 1fr; padding: 32px; }
      .reviews-grid { grid-template-columns: repeat(2, 1fr); }
      .blog-grid { grid-template-columns: 1fr; }
      .contact-grid { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
      nav { display: none; }
      nav.open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 80px; left: 0; right: 0;
        background: #fff;
        padding: 16px;
        box-shadow: var(--shadow-lg);
        z-index: 999;
      }
      .hamburger { display: flex; }
    }
    @media (max-width: 480px) {
      .quick-bar-inner { grid-template-columns: 1fr 1fr; }
      .services-grid { grid-template-columns: repeat(2, 1fr); }
      .reviews-grid { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; }
    }