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

        :root {
            --green: #1e8a3e;
            --green-dark: #0f5c26;
            --green-light: #43b45f;
            --orange: #f07f13;
            --orange-dark: #d96a00;
            --white: #ffffff;
            --deep-green: #0a3a1e;
            --gray: #6b7280;
            --bg-light: #f7faf7;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Segoe UI', 'Prompt', Tahoma, Arial, sans-serif;
            color: var(--deep-green);
            line-height: 1.6;
            background: var(--white);
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header / Nav ===== */
        header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(15, 92, 38, 0.96);
            backdrop-filter: blur(8px);
            transition: box-shadow 0.3s;
        }

        header.scrolled {
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }

        .nav {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 12px;
            text-decoration: none;
        }

        .logo-img {
            width: 46px;
            height: 46px;
            object-fit: contain;
            background: var(--white);
            border-radius: 10px;
            padding: 3px;
        }

        .logo-text {
            color: var(--white);
            font-size: 22px;
            font-weight: 800;
            letter-spacing: 1px;
        }

        .logo-text span {
            color: var(--orange);
        }

        .nav-links {
            display: flex;
            gap: 22px;
            list-style: none;
        }

        .nav-links a {
            color: #dcefe1;
            text-decoration: none;
            font-size: 14px;
            font-weight: 600;
            transition: color 0.3s;
            white-space: nowrap;
        }

        .nav-links a:hover {
            color: var(--orange);
        }

        .nav-cta {
            background: var(--orange);
            color: var(--white);
            padding: 10px 20px;
            border-radius: 30px;
            text-decoration: none;
            font-weight: 700;
            font-size: 14px;
            transition: background 0.3s;
            white-space: nowrap;
        }

        .nav-cta:hover {
            background: var(--orange-dark);
        }

        .lang-dropdown {
            position: relative;
            display: inline-block;
        }

        .lang-dd-toggle {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.12);
            color: #dcefe1;
            border: 1px solid rgba(255, 255, 255, 0.3);
            padding: 6px 12px;
            border-radius: 8px;
            font-size: 13px;
            font-weight: 700;
            font-family: inherit;
            cursor: pointer;
            transition: background 0.3s, border-color 0.3s, color 0.3s;
            white-space: nowrap;
        }

        .lang-dd-toggle:hover {
            border-color: var(--orange);
        }

        .lang-dd-toggle .caret {
            font-size: 10px;
            opacity: 0.8;
            transition: transform 0.2s;
        }

        .lang-dropdown.open .caret {
            transform: rotate(180deg);
        }

        .lang-menu {
            position: absolute;
            top: calc(100% + 8px);
            right: 0;
            min-width: 140px;
            background: var(--white);
            border: 1px solid #e2efe5;
            border-radius: 12px;
            box-shadow: 0 12px 30px rgba(7, 38, 25, 0.18);
            padding: 8px;
            list-style: none;
            margin: 0;
            z-index: 1000;
            opacity: 0;
            visibility: hidden;
            transform: translateY(-6px);
            transition: opacity 0.25s, transform 0.25s, visibility 0.25s;
        }

        .lang-dropdown.open .lang-menu {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }

        .lang-menu li {
            width: 100%;
        }

        .lang-menu .lang-btn {
            display: block;
            width: 100%;
            text-align: left;
            background: transparent;
            border: none;
            color: var(--dark);
            padding: 10px 12px;
            border-radius: 8px;
            font-size: 14px;
            font-weight: 600;
            font-family: inherit;
            cursor: pointer;
            transition: background 0.2s, color 0.2s;
        }

        .lang-menu .lang-btn:hover {
            background: #e8f6ee;
            color: var(--orange-dark);
        }

        .lang-menu .lang-btn.active {
            background: var(--orange);
            color: var(--white);
        }

        .menu-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--white);
            font-size: 28px;
            cursor: pointer;
        }

        /* ===== Hero ===== */
        .hero {
            min-height: 100vh;
            display: flex;
            align-items: center;
            background: linear-gradient(120deg, rgba(10, 58, 30, 0.92) 0%, rgba(21, 110, 58, 0.88) 50%, rgba(51, 145, 85, 0.85) 100%), url('../images/cover.jpg') center/cover no-repeat;
            color: var(--white);
            padding: 140px 0 80px;
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            right: -150px;
            top: 20%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(240, 127, 19, 0.35), transparent 70%);
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 60px;
            align-items: center;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: rgba(255, 255, 255, 0.14);
            border: 1px solid rgba(255, 255, 255, 0.35);
            color: #fff;
            padding: 8px 18px;
            border-radius: 30px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 24px;
        }

        .hero h1 {
            font-size: 48px;
            font-weight: 800;
            line-height: 1.15;
            margin-bottom: 20px;
        }

        .hero h1 .highlight {
            background: linear-gradient(90deg, var(--orange), #ffb84d);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero p {
            font-size: 18px;
            color: #f0fdf4;
            max-width: 560px;
            margin-bottom: 12px;
        }

        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-top: 20px;
        }

        .btn {
            display: inline-block;
            padding: 14px 34px;
            border-radius: 30px;
            font-size: 16px;
            font-weight: 700;
            text-decoration: none;
            transition: transform 0.2s, opacity 0.2s;
        }

        .btn:hover {
            transform: translateY(-2px);
        }

        .btn-primary {
            background: var(--orange);
            color: var(--white);
        }

        .btn-primary:hover {
            opacity: 0.9;
        }

        .btn-outline {
            border: 2px solid var(--white);
            color: var(--white);
        }

        .btn-outline:hover {
            background: var(--white);
            color: var(--deep-green);
        }

        .hero-visual {
            text-align: center;
        }

        .hero-visual img {
            max-width: 380px;
            width: 100%;
            border-radius: 18px;
            box-shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
            filter: saturate(1.05);
        }

        .hero-cover-note {
            margin-top: 16px;
            font-size: 14px;
            color: #dcefe1;
        }

        /* ===== Sections general ===== */
        section {
            padding: 96px 0;
        }

        .section-tag {
            color: var(--green);
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 2px;
            font-size: 13px;
            margin-bottom: 10px;
        }

        .section-title {
            font-size: 38px;
            font-weight: 800;
            margin-bottom: 16px;
            line-height: 1.2;
        }

        .section-subtitle {
            color: var(--gray);
            font-size: 17px;
            max-width: 700px;
        }

        .text-center {
            text-align: center;
        }

        .text-center .section-subtitle {
            margin: 0 auto;
        }

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

        /* ===== About ===== */
        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 56px;
            align-items: center;
            margin-top: 48px;
        }

        .about-visual {
            border-radius: 20px;
            overflow: hidden;
            box-shadow: 0 16px 44px rgba(0, 0, 0, 0.14);
        }

        .about-visual img {
            width: 100%;
            height: 560px;
            object-fit: cover;
            display: block;
        }

        .about-text h3 {
            font-size: 22px;
            margin-bottom: 14px;
            color: var(--green-dark);
        }

        .about-text p {
            color: #2f7d46;
            margin-bottom: 14px;
            font-size: 15px;
        }

        /* ===== Objective ===== */
        .objective {
            background: var(--bg-light);
        }

        .obj-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 26px;
            margin-top: 52px;
        }

        .obj-card {
            background: var(--white);
            border-radius: 16px;
            padding: 28px;
            border-top: 4px solid var(--orange);
            box-shadow: 0 6px 28px rgba(0, 0, 0, 0.06);
            display: flex;
            gap: 20px;
            align-items: flex-start;
        }

        .obj-num {
            font-size: 34px;
            font-weight: 800;
            color: var(--orange);
            line-height: 1;
            flex-shrink: 0;
        }

        .obj-card p {
            color: #2f7d46;
            font-size: 15px;
        }

        /* ===== Facility ===== */
        .fac-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 52px;
        }

        .fac-card {
            background: var(--bg-light);
            border: 1px solid #e5e7eb;
            border-radius: 16px;
            padding: 28px 22px;
            text-align: center;
        }

        .fac-icon {
            font-size: 36px;
            margin-bottom: 12px;
        }

        .fac-card .fac-label {
            font-size: 13px;
            color: var(--gray);
            margin-bottom: 6px;
        }

        .fac-card .fac-value {
            font-size: 18px;
            font-weight: 800;
            color: var(--green-dark);
        }

        /* ===== Factory slideshow ===== */
        .slideshow {
            position: relative;
            margin-top: 52px;
            border-radius: 20px;
            overflow: hidden;
            box-shadow: 0 16px 44px rgba(0, 0, 0, 0.16);
            background: var(--deep-green);
        }

        .slide-track {
            position: relative;
            width: 100%;
            aspect-ratio: 16 / 9;
        }

        .slide {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            object-fit: contain;
            opacity: 0;
            transition: opacity 0.7s ease-in-out;
            pointer-events: none;
        }

        .slide.active {
            opacity: 1;
            pointer-events: auto;
        }

        .slideshow .slide-btn {
            position: absolute;
            top: 50%;
            transform: translateY(-50%);
            z-index: 5;
            background: rgba(0, 0, 0, 0.45);
            color: #fff;
            border: none;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            font-size: 22px;
            cursor: pointer;
            transition: background 0.3s;
        }

        .slideshow .slide-btn:hover {
            background: var(--orange);
        }

        .slideshow .slide-prev {
            left: 16px;
        }

        .slideshow .slide-next {
            right: 16px;
        }

        .slide-dots {
            position: absolute;
            bottom: 14px;
            left: 0;
            right: 0;
            display: flex;
            justify-content: center;
            gap: 8px;
            z-index: 5;
        }

        .slide-dots span {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.5);
            cursor: pointer;
            transition: background 0.3s, width 0.3s;
        }

        .slide-dots span.active {
            background: var(--orange);
            width: 26px;
            border-radius: 6px;
        }

        /* ===== Services ===== */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
            margin-top: 52px;
        }

        .service-card {
            background: var(--white);
            border-radius: 16px;
            overflow: hidden;
            border-top: 4px solid var(--orange);
            box-shadow: 0 6px 30px rgba(0, 0, 0, 0.06);
            transition: transform 0.3s, box-shadow 0.3s;
        }

        .service-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 16px 40px rgba(0, 0, 0, 0.12);
        }

        .service-card img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
        }

        .service-card .service-body {
            padding: 24px;
        }

        .service-card h3 {
            font-size: 20px;
            margin-bottom: 10px;
        }

        .service-card p {
            color: var(--gray);
            font-size: 15px;
        }

        /* ===== QC ===== */
        .qc {
            background: var(--bg-light);
        }

        .qc-imgs {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
            gap: 20px;
            margin-top: 48px;
        }

        .qc-imgs img {
            width: 100%;
            height: 260px;
            object-fit: cover;
            border-radius: 14px;
            box-shadow: 0 8px 26px rgba(0, 0, 0, 0.12);
        }

        .qc-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 22px;
            margin-top: 44px;
        }

        .qc-step {
            background: var(--white);
            border-radius: 14px;
            padding: 24px;
            border: 1px solid #e5e7eb;
            display: flex;
            gap: 16px;
            align-items: center;
        }

        .qc-num {
            font-size: 26px;
            font-weight: 800;
            color: var(--orange);
            flex-shrink: 0;
        }

        .qc-step p {
            color: #2f7d46;
            font-size: 15px;
        }

        /* ===== Products ===== */
        .products-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
            margin-top: 56px;
        }

        .product-card {
            background: var(--white);
            border-radius: 16px;
            padding: 24px;
            border-top: 4px solid var(--green);
            box-shadow: 0 6px 30px rgba(0, 0, 0, 0.06);
            transition: transform 0.3s, box-shadow 0.3s;
            text-align: center;
            display: flex;
            flex-direction: column;
        }

        .product-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 16px 40px rgba(0, 0, 0, 0.12);
        }

        .product-img {
            width: 100%;
            aspect-ratio: 1 / 1;
            object-fit: contain;
            border-radius: 12px;
            background: var(--bg-light);
            margin-bottom: 14px;
            display: block;
            border: 1px solid #eef2ee;
        }

        .product-card h3 {
            font-size: 19px;
            margin-bottom: 8px;
        }

        .product-card .brand-tag {
            display: inline-block;
            background: rgba(240, 127, 19, 0.12);
            color: var(--orange-dark);
            font-size: 13px;
            font-weight: 700;
            padding: 3px 12px;
            border-radius: 20px;
            margin-bottom: 10px;
        }

        .product-card p {
            color: var(--gray);
            font-size: 14px;
        }

        .product-card .btn-download {
            margin-top: 14px;
            align-self: center;
        }

        .dl-row {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
            justify-content: center;
            margin-top: 14px;
        }

        .dl-row .btn-download {
            margin-top: 0;
            align-self: auto;
        }

        .product-card .btn-fb {
            margin-top: 10px;
            align-self: center;
        }

        /* ===== Certificates ===== */
        .certificate {
            background: var(--bg-light);
        }

        .cert-group {
            background: var(--white);
            border-radius: 16px;
            padding: 32px;
            box-shadow: 0 6px 28px rgba(0, 0, 0, 0.07);
            border-top: 4px solid var(--green);
            text-align: center;
            max-width: 860px;
            margin: 52px auto 0;
        }

        .cert-group h3 {
            font-size: 22px;
            margin-bottom: 20px;
            color: var(--green-dark);
        }

        .cert-images {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 20px;
        }

        .cert-img-card {
            border: 1px solid #e5e7eb;
            border-radius: 12px;
            overflow: hidden;
            background: var(--white);
        }

        .cert-img-card img {
            width: 100%;
            height: 360px;
            object-fit: contain;
            background: var(--white);
            display: block;
            transition: transform 0.3s;
        }

        .cert-img-card a {
            display: block;
        }

        .cert-img-card a:hover img {
            transform: scale(1.03);
        }

        .cert-img-card .cert-name {
            padding: 10px 12px;
            font-size: 14px;
            font-weight: 700;
            color: var(--green-dark);
            text-align: center;
            border-top: 1px solid #eef2ee;
        }

        /* ===== Projects ===== */
        .project-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
            gap: 26px;
            margin-top: 52px;
        }

        .project-card {
            background: var(--white);
            border-radius: 14px;
            overflow: hidden;
            box-shadow: 0 6px 26px rgba(0, 0, 0, 0.08);
            border-top: 4px solid var(--green);
            transition: transform 0.3s, box-shadow 0.3s;
        }

        .project-card:hover {
            transform: translateY(-6px);
            box-shadow: 0 16px 40px rgba(0, 0, 0, 0.14);
        }

        .project-card img {
            width: 100%;
            height: 320px;
            object-fit: cover;
            display: block;
        }

        .project-card .project-body {
            padding: 22px 24px;
        }

        .project-card .project-type {
            font-size: 13px;
            font-weight: 700;
            color: var(--orange-dark);
            margin-bottom: 10px;
        }

        .project-card h3 {
            font-size: 19px;
            margin-bottom: 8px;
        }

        .project-card p {
            font-size: 15px;
            color: var(--gray);
        }

        /* ===== Datasheet ===== */
        .data-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 52px;
        }

        .data-card {
            border: 1px solid #e5e7eb;
            border-radius: 16px;
            padding: 26px 24px;
            background: var(--white);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
            transition: transform 0.3s, box-shadow 0.3s;
            text-align: left;
        }

        .data-card:hover {
            transform: translateY(-6px);
            box-shadow: 0 14px 36px rgba(0, 0, 0, 0.1);
        }

        .data-card .data-badge {
            display: inline-block;
            background: rgba(240, 127, 19, 0.12);
            color: var(--orange-dark);
            font-size: 12px;
            font-weight: 700;
            padding: 3px 12px;
            border-radius: 20px;
            margin-bottom: 12px;
        }

        .data-card h3 {
            font-size: 18px;
            color: var(--deep-green);
            margin-bottom: 6px;
        }

        .data-card p {
            font-size: 14px;
            color: var(--gray);
            margin-bottom: 18px;
        }

        .btn-download {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 9px 16px;
            border-radius: 24px;
            background: var(--green);
            color: var(--white);
            font-size: 13px;
            font-weight: 700;
            text-decoration: none;
            transition: background 0.3s;
        }

        .btn-download:hover {
            background: var(--green-dark);
        }

        .btn-fb {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            padding: 9px 16px;
            border-radius: 24px;
            background: #1877f2;
            color: var(--white);
            font-size: 13px;
            font-weight: 700;
            text-decoration: none;
            transition: background 0.3s;
        }

        .btn-fb:hover {
            background: #1466d8;
        }

        /* ===== FAQ ===== */
        .faq {
            background: var(--white);
        }

        .faq-list {
            max-width: 860px;
            margin: 44px auto 0;
        }

        .faq-item {
            border: 1px solid #e5e7eb;
            border-radius: 12px;
            padding: 18px 22px;
            margin-bottom: 14px;
            background: #fff;
        }

        .faq-item h3 {
            font-size: 18px;
            color: var(--green-dark);
            margin-bottom: 8px;
        }

        .faq-item p {
            font-size: 15px;
            color: var(--gray);
            margin: 0;
        }

        /* ===== CTA ===== */
        .cta {
            background: linear-gradient(120deg, var(--orange), var(--orange-dark));
            color: var(--white);
            text-align: center;
            padding: 70px 0;
        }

        .cta h2 {
            font-size: 34px;
            font-weight: 800;
            margin-bottom: 12px;
        }

        .cta p {
            font-size: 17px;
            margin-bottom: 28px;
            opacity: 0.95;
        }

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

        .btn-white:hover {
            background: #f5f5f5;
        }

        /* ===== Contact ===== */
        .contact {
            background: var(--bg-light);
        }

        .contact-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            margin-top: 56px;
        }

        .contact-info h3 {
            font-size: 24px;
            margin-bottom: 16px;
        }

        .contact-item {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            margin-bottom: 18px;
            font-size: 15px;
        }

        .contact-item .icon {
            width: 46px;
            height: 46px;
            flex-shrink: 0;
            border-radius: 50%;
            background: var(--green);
            color: var(--white);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
        }

        .contact-item .label {
            color: var(--gray);
            font-size: 13px;
            display: block;
        }

        .contact-item strong {
            color: var(--deep-green);
        }

        .contact-item a {
            color: var(--green-dark);
            font-weight: 600;
            text-decoration: none;
        }

        .contact-item a:hover {
            color: var(--orange-dark);
        }

        .social-links {
            display: flex;
            gap: 14px;
            margin-top: 20px;
            flex-wrap: wrap;
        }

        .social-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 18px;
            border-radius: 30px;
            text-decoration: none;
            font-size: 14px;
            font-weight: 700;
            color: var(--white);
            transition: opacity 0.3s;
        }

        .social-link:hover {
            opacity: 0.85;
        }

        .social-fb {
            background: #1877f2;
        }

        .social-ig {
            background: linear-gradient(45deg, #f09433, #e6683c, #dc2743, #cc2366, #bc1888);
        }

        .social-line {
            background: #06c755;
        }

        .social-web {
            background: var(--green-dark);
        }

        .line-box {
            margin-top: 24px;
            background: var(--white);
            border: 1px solid #e5e7eb;
            border-radius: 16px;
            padding: 20px;
            display: flex;
            align-items: center;
            gap: 18px;
            max-width: 460px;
        }

        .line-box img {
            width: 96px;
            height: 96px;
            object-fit: contain;
            border-radius: 10px;
            border: 1px solid #e5e7eb;
        }

        .line-box .line-info h4 {
            font-size: 16px;
            color: var(--green-dark);
            margin-bottom: 4px;
        }

        .line-box .line-info p {
            font-size: 14px;
            color: var(--gray);
        }

        .line-box .line-info .line-id {
            font-size: 17px;
            font-weight: 800;
            color: var(--orange-dark);
        }

        /* ===== Footer ===== */
        footer {
            background: var(--green-dark);
            color: #cfe8d8;
            padding: 40px 0 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }

        .footer-logo {
            color: var(--white);
            font-size: 20px;
            font-weight: 800;
            margin-bottom: 10px;
        }

        .footer-logo span {
            color: var(--orange);
        }

        .footer-about p {
            font-size: 14px;
            color: #cfe8d8;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 10px;
        }

        .footer-brand img {
            width: 44px;
            height: 44px;
            object-fit: contain;
            border-radius: 10px;
            background: var(--white);
            padding: 2px;
        }

        .footer-col h4 {
            color: var(--white);
            font-size: 15px;
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 14px;
        }

        .footer-col a {
            display: block;
            color: #cfe8d8;
            text-decoration: none;
            font-size: 14px;
            margin-bottom: 10px;
            transition: color 0.3s;
        }

        .footer-col a:hover {
            color: var(--orange);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.15);
            padding-top: 20px;
            font-size: 13px;
        }

        /* Image lightbox (base — applies to all screen sizes) */
        .product-card .product-img {
            cursor: zoom-in;
        }

        .lightbox {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0, 0, 0, 0.88);
            z-index: 2000;
            align-items: center;
            justify-content: center;
            padding: 24px;
        }

        .lightbox.open {
            display: flex;
        }

        .lightbox img {
            max-width: 92vw;
            max-height: 92vh;
            border-radius: 12px;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.55);
            object-fit: contain;
        }

        .lightbox-close {
            position: absolute;
            top: 16px;
            right: 28px;
            font-size: 48px;
            line-height: 1;
            color: var(--white);
            cursor: pointer;
            transition: color 0.3s, transform 0.3s;
            user-select: none;
        }

        .lightbox-close:hover {
            color: var(--orange);
            transform: scale(1.15);
        }

        /* ===== Responsive ===== */
        @media (max-width: 992px) {
            .hero-grid,
            .about-grid,
            .contact-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }

            .products-grid,
            .fac-grid,
            .qc-imgs {
                grid-template-columns: repeat(2, 1fr);
            }

            .services-grid,
            .qc-grid,
            .project-grid,
            .data-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                position: fixed;
                top: 72px;
                left: 0;
                right: 0;
                background: rgba(15, 92, 38, 0.98);
                flex-direction: column;
                align-items: center;
                padding: 24px;
                gap: 18px;
                transform: translateX(100%);
                transition: transform 0.3s;
                z-index: 999;
                pointer-events: none;
            }

            .nav-links.open {
                transform: translateX(0);
                pointer-events: auto;
            }

            .menu-toggle {
                display: block;
            }

            .hero h1 {
                font-size: 34px;
            }

            .hero-visual {
                display: none;
            }

            .obj-grid,
            .products-grid,
            .services-grid,
            .qc-grid,
            .project-grid,
            .data-grid,
            .fac-grid,
            .qc-imgs {
                grid-template-columns: 1fr;
            }

            .cert-images {
                grid-template-columns: 1fr;
            }

            .about-visual img {
                height: 360px;
            }

            .section-title {
                font-size: 30px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .nav-cta {
                display: none;
            }
        }
    
/* ===== Multi-page additions ===== */

        .nav-links a.active { color: var(--orange); }

        /* Inner page header */
        .page-header {
            background: linear-gradient(120deg, var(--deep-green) 0%, var(--green-dark) 60%, var(--green) 100%);
            color: var(--white);
            text-align: center;
            padding: 130px 0 60px;
        }

        .page-header h1 {
            font-size: 38px;
            font-weight: 800;
            margin-bottom: 10px;
        }

        .breadcrumb {
            font-size: 13px;
            color: #cfe8d8;
            margin-top: 12px;
        }

        .breadcrumb a {
            color: #9fd7b2;
            text-decoration: none;
        }

        .breadcrumb a:hover { color: var(--orange); }

        /* Preview cards (home) */
        .preview-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 52px;
        }

        .preview-card {
            border-radius: 14px;
            overflow: hidden;
            background: var(--white);
            box-shadow: 0 6px 26px rgba(0, 0, 0, 0.08);
            border-top: 4px solid var(--green);
            border: 1px solid #eef2ee;
            text-decoration: none;
            display: block;
            transition: transform 0.3s, box-shadow 0.3s;
            color: inherit;
        }

        .preview-card:hover {
            transform: translateY(-6px);
            box-shadow: 0 16px 40px rgba(0, 0, 0, 0.14);
        }

        .preview-card img {
            width: 100%;
            height: 220px;
            object-fit: cover;
            display: block;
        }

        .preview-card .preview-body {
            padding: 16px 18px;
        }

        .preview-card h3 {
            font-size: 17px;
            margin-bottom: 6px;
            color: var(--green-dark);
        }

        .preview-card p {
            font-size: 14px;
            color: var(--gray);
            margin: 0;
        }

        .btn-more {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            margin-top: 40px;
            padding: 12px 30px;
            border-radius: 30px;
            background: var(--green);
            color: var(--white);
            font-size: 15px;
            font-weight: 700;
            text-decoration: none;
            transition: background 0.3s;
        }

        .btn-more:hover { background: var(--green-dark); }

        .text-center .btn-more { margin-top: 44px; }

        /* Spec chips (products) */
        .spec-chips {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            justify-content: center;
            margin: 6px 0 12px;
        }

        .spec-chip {
            background: #eef5f0;
            color: var(--green-dark);
            font-size: 12px;
            font-weight: 700;
            padding: 4px 11px;
            border-radius: 16px;
        }

        .spec-chip-warranty {
            background: rgba(240, 127, 19, 0.14);
            color: var(--orange-dark);
        }

        .price-note {
            background: rgba(240, 127, 19, 0.10);
            border: 1px dashed var(--orange);
            color: var(--orange-dark);
            border-radius: 10px;
            padding: 10px 12px;
            font-size: 13.5px;
            margin-bottom: 12px;
        }

        .price-note a {
            color: var(--green-dark);
            font-weight: 700;
            text-decoration: none;
        }

        .price-note a:hover { color: var(--orange-dark); }

        /* Service detail blocks */
        .svc-block {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 44px;
            align-items: center;
            margin-top: 52px;
        }

        .svc-block img {
            width: 100%;
            border-radius: 16px;
            box-shadow: 0 14px 40px rgba(0, 0, 0, 0.12);
        }

        .svc-block.rev img { order: 2; }

        .panel-media {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 18px;
        }

        .panel-media img {
            width: 100%;
        }

        .panel-media .panel-cert {
            width: 340px;
            max-width: 100%;
            border-radius: 12px;
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.16);
            cursor: zoom-in;
        }

        .svc-block.panel-block {
            align-items: start;
        }

        .data-card .panel-tisi {
            display: inline-block;
            font-size: 13.5px;
            font-weight: 700;
            color: var(--orange-dark);
            background: rgba(240, 127, 19, 0.1);
            padding: 5px 12px;
            border-radius: 8px;
            margin-bottom: 18px;
        }

        .svc-block h3 {
            font-size: 24px;
            color: var(--green-dark);
            margin-bottom: 12px;
        }

        .svc-block p {
            color: #2f7d46;
            font-size: 15.5px;
            margin-bottom: 14px;
        }

        .svc-points {
            list-style: none;
            margin: 12px 0 0;
            padding: 0;
        }

        .svc-points li {
            padding: 8px 0 8px 28px;
            position: relative;
            color: #2f7d46;
            font-size: 14.5px;
        }

        .svc-points li::before {
            content: 'โœ“';
            position: absolute;
            left: 0;
            top: 8px;
            color: var(--orange);
            font-weight: 800;
        }

        /* Gallery (projects) */
        .gallery-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
            margin-top: 52px;
        }

        .gallery-card {
            border-radius: 16px;
            overflow: hidden;
            background: var(--white);
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.09);
            border-top: 4px solid var(--green);
        }

        .gallery-card img {
            width: 100%;
            height: 380px;
            object-fit: cover;
            display: block;
        }

        .gallery-card .g-body {
            padding: 20px 24px;
        }

        .gallery-card h3 {
            font-size: 20px;
            margin-bottom: 8px;
        }

        .gallery-card p {
            font-size: 15px;
            color: var(--gray);
            margin: 0;
        }

        .g-tag {
            display: inline-block;
            background: rgba(240, 127, 19, 0.12);
            color: var(--orange-dark);
            font-size: 12.5px;
            font-weight: 700;
            padding: 3px 12px;
            border-radius: 20px;
            margin-bottom: 10px;
        }

        /* Contact info list (contact page) */
        .contact-list {
            max-width: 640px;
            margin: 0 auto;
        }

        .contact-list .contact-item {
            background: var(--white);
            border: 1px solid #e5e7eb;
            border-radius: 14px;
            padding: 16px 20px;
        }

        /* Responsive additions */
        @media (max-width: 992px) {
            .preview-grid { grid-template-columns: repeat(2, 1fr); }
            .gallery-grid { grid-template-columns: 1fr; }
            .svc-block { grid-template-columns: 1fr; }
            .svc-block.rev img { order: 0; }
        }

        /* Section wrappers used by the multi-page build */
        .about, .facility, .qc, .products, .services, .services-detail,
        .projects, .gallery, .faq, .certificate, .objective, .contact {
            padding: 80px 0;
        }

        .bg-light { background: var(--bg-light); }

        /* Language switcher label */
        .lang-label { font-weight: 700; }

        /* Service detail content */
        .svc-content h2 {
            font-size: 26px;
            font-weight: 800;
            color: var(--green-dark);
            margin-bottom: 14px;
        }

        .svc-icon {
            font-size: 34px;
            width: 64px;
            height: 64px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 16px;
            background: rgba(15, 92, 38, 0.08);
            margin-bottom: 16px;
        }

        .svc-reverse img { order: 2; }

        .svc-content .btn { margin-top: 8px; }

        /* Project gallery text */
        .gallery-body { padding: 20px 24px; }

        .pr-type {
            display: inline-block;
            background: rgba(240, 127, 19, 0.12);
            color: var(--orange-dark);
            font-size: 12.5px;
            font-weight: 700;
            padding: 3px 12px;
            border-radius: 20px;
            margin-bottom: 10px;
        }

        .zoom { cursor: zoom-in; transition: transform 0.4s; }
        .zoom:hover { transform: scale(1.03); }

        /* Contact page side column + map */
        .contact-side { display: flex; flex-direction: column; gap: 22px; }

        .map-embed {
            margin-top: 22px;
            border-radius: 14px;
            overflow: hidden;
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.09);
            line-height: 0;
        }

        .social-row {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
        }

        .s-web {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 9px 18px;
            border-radius: 26px;
            background: var(--white);
            border: 1px solid #e5e7eb;
            color: var(--green-dark);
            font-size: 14px;
            font-weight: 700;
            text-decoration: none;
            transition: background 0.3s, color 0.3s, border-color 0.3s;
        }

        .s-web:hover {
            background: var(--green);
            border-color: var(--green);
            color: var(--white);
        }

        /* datasheet cards / download buttons (fallbacks if not in base) */
        .dl-row { display: flex; flex-wrap: wrap; gap: 8px; }

        .products.bg-light, .projects.bg-light, .gallery.bg-light,
        .services-detail.bg-light, .contact.bg-light, .faq {
            background: var(--bg-light);
        }

        @media (max-width: 992px) {
            .svc-reverse img { order: 0; }
        }

        @media (max-width: 768px) {
            .page-header h1 { font-size: 28px; }
            .preview-grid { grid-template-columns: 1fr; }
            .gallery-card img { height: 240px; }
            .about, .facility, .qc, .products, .services, .services-detail,
            .projects, .gallery, .faq, .certificate, .objective, .contact {
                padding: 56px 0;
            }
        }

        /* ===== Mobile layout (phones) ===== */
        @media (max-width: 768px) {
            html, body { overflow-x: hidden; }

            .container { padding: 0 18px; }

            /* Header / nav */
            .nav { height: 64px; gap: 10px; }
            .logo { order: 0; }
            .lang-dropdown { order: 1; margin-left: auto; }
            .menu-toggle { order: 2; font-size: 26px; }
            .lang-dd-toggle { padding: 6px 9px; font-size: 12px; }
            .lang-menu { right: 0; }
            .nav-links {
                top: 64px;
                max-height: calc(100vh - 64px);
                overflow-y: auto;
                -webkit-overflow-scrolling: touch;
                gap: 0;
                padding: 10px 18px 24px;
            }
            .nav-links li { width: 100%; }
            .nav-links a {
                display: block;
                width: 100%;
                padding: 14px 6px;
                text-align: center;
                font-size: 16px;
                border-bottom: 1px solid rgba(255, 255, 255, 0.12);
            }

            /* Page header */
            .page-header { padding: 104px 0 44px; }
            .page-header h1 { font-size: 26px; }
            .breadcrumb { font-size: 12px; }

            /* Hero */
            .hero { min-height: auto; padding: 108px 0 64px; }
            .hero h1 { font-size: 28px; line-height: 1.3; }
            .hero p { font-size: 15px; }

            /* Headings / sections */
            .section-title { font-size: 25px; }
            .section-subtitle { font-size: 14.5px; }
            .section-tag { font-size: 12px; }

            /* Grids collapse to a single column */
            .products-grid, .services-grid, .obj-grid, .data-grid,
            .fac-grid, .qc-grid, .qc-imgs, .gallery-grid, .cert-images,
            .preview-grid, .hero-grid, .about-grid, .contact-grid {
                grid-template-columns: 1fr !important;
                gap: 20px;
            }

            .product-card { padding: 18px; }
            .product-card .product-img { height: 210px; object-fit: contain; }
            .product-card h3 { font-size: 18px; }

            .svc-block { grid-template-columns: 1fr !important; gap: 24px; margin-top: 34px; }
            .svc-block img { border-radius: 12px; }
            .svc-block.rev img, .svc-reverse img { order: 0; }
            .svc-block h3, .svc-content h2 { font-size: 21px; }

            .obj-card { flex-direction: column; gap: 12px; padding: 22px; }
            .gallery-card img { height: 220px; }
            .gallery-body, .g-body { padding: 16px 18px; }

            .data-card { padding: 20px; }
            .btn-download, .btn-fb { width: 100%; justify-content: center; }
            .data-grid { margin-top: 30px; }

            .about-visual img { height: 260px; }
            .map-embed iframe { width: 100%; height: 280px; }

            /* Buttons full width for easy tapping */
            .cta { padding: 56px 0; }
            .cta h2 { font-size: 24px; }
            .cta .btn, .btn-white, .btn-more { width: 100%; justify-content: center; text-align: center; }

            .social-row { gap: 8px; }
            .s-web { flex: 1 1 46%; justify-content: center; font-size: 13px; padding: 10px 12px; }
            .contact-list .contact-item { padding: 14px 16px; }

            /* Footer */
            footer { padding-top: 56px; }
            .footer-grid { gap: 24px; }
            .footer-col a { padding: 5px 0; }
            .footer-bottom { text-align: center; font-size: 12px; }

            /* Lightbox */
            .lightbox { padding: 14px; }
            .lightbox-close { top: 10px; right: 18px; font-size: 40px; }
            .lightbox img { max-width: 96vw; max-height: 86vh; }
        }

        @media (max-width: 400px) {
            .logo-text { display: none; }
            .page-header h1 { font-size: 23px; }
            .hero h1 { font-size: 24px; }
            .section-title { font-size: 22px; }
            .s-web { flex: 1 1 100%; }
        }

        /* ===== Accessories gallery ===== */
        .acc-gallery {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 22px;
            margin-top: 36px;
        }

        .acc-item {
            background: var(--white);
            border: 1px solid #e5e7eb;
            border-radius: 16px;
            padding: 16px;
            text-align: center;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
            transition: transform 0.3s, box-shadow 0.3s;
        }

        .acc-item:hover {
            transform: translateY(-4px);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
        }

        .acc-item img {
            display: block;
            width: 100%;
            aspect-ratio: 3 / 4;
            object-fit: contain;
            background: #f7faf8;
            border-radius: 12px;
        }

        .acc-item h4 {
            margin-top: 14px;
            font-size: 15px;
            color: var(--green-dark);
        }

        @media (max-width: 992px) {
            .acc-gallery { grid-template-columns: repeat(3, 1fr); }
        }

        @media (max-width: 768px) {
            .acc-gallery { grid-template-columns: repeat(2, 1fr); gap: 14px; }
            .acc-item { padding: 12px; }
            .acc-item h4 { font-size: 13.5px; margin-top: 10px; }
        }

        /* ===== Chatbot ===== */
        .chat-fab {
            position: fixed;
            right: 22px;
            bottom: 22px;
            width: 58px;
            height: 58px;
            border: none;
            border-radius: 50%;
            background: var(--green-dark);
            color: var(--white);
            cursor: pointer;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.22);
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 9000;
            transition: transform 0.25s, background 0.25s;
        }

        .chat-fab:hover { transform: translateY(-3px); background: var(--green); }
        .chat-fab.hidden { display: none; }

        .chat-fab-dot {
            position: absolute;
            top: 8px;
            right: 9px;
            width: 11px;
            height: 11px;
            border-radius: 50%;
            background: var(--orange);
            border: 2px solid var(--white);
        }

        .chat-panel {
            position: fixed;
            right: 22px;
            bottom: 22px;
            width: 370px;
            max-width: calc(100vw - 32px);
            height: 540px;
            max-height: calc(100vh - 44px);
            background: var(--white);
            border-radius: 18px;
            box-shadow: 0 18px 50px rgba(0, 0, 0, 0.25);
            display: flex;
            flex-direction: column;
            overflow: hidden;
            z-index: 9001;
            opacity: 0;
            visibility: hidden;
            transform: translateY(16px) scale(0.98);
            transition: opacity 0.22s, transform 0.22s, visibility 0.22s;
        }

        .chat-panel.open { opacity: 1; visibility: visible; transform: translateY(0) scale(1); }

        .chat-head {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 10px;
            padding: 14px 16px;
            background: linear-gradient(135deg, var(--green-dark), var(--green));
            color: var(--white);
        }

        .chat-title { font-size: 15px; font-weight: 700; }
        .chat-sub { font-size: 12px; opacity: 0.85; margin-top: 2px; }

        .chat-close {
            background: transparent;
            border: none;
            color: var(--white);
            font-size: 26px;
            line-height: 1;
            cursor: pointer;
            padding: 0 4px;
        }

        .chat-msgs {
            flex: 1;
            overflow-y: auto;
            padding: 16px;
            background: var(--bg-light);
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .chat-msg {
            max-width: 86%;
            padding: 10px 13px;
            border-radius: 14px;
            font-size: 14px;
            line-height: 1.55;
            white-space: pre-line;
            word-break: break-word;
            overflow-wrap: anywhere;
        }

        .chat-msg.bot {
            align-self: flex-start;
            background: var(--white);
            color: var(--deep-green);
            border: 1px solid #e5e7eb;
            border-bottom-left-radius: 4px;
        }

        .chat-msg.user {
            align-self: flex-end;
            background: var(--green);
            color: var(--white);
            border-bottom-right-radius: 4px;
        }

        .chat-quick { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 2px; }

        .chat-chip {
            font-family: inherit;
            font-size: 13px;
            padding: 8px 13px;
            border-radius: 999px;
            border: 1px solid var(--green);
            background: var(--white);
            color: var(--green-dark);
            cursor: pointer;
            transition: background 0.2s, color 0.2s;
        }

        .chat-chip:hover { background: var(--green); color: var(--white); }

        .chat-chip.primary {
            background: var(--orange);
            border-color: var(--orange);
            color: var(--white);
            font-weight: 600;
        }

        .chat-chip.primary:hover { background: var(--orange-dark); border-color: var(--orange-dark); }

        .chat-input-row {
            display: flex;
            gap: 8px;
            padding: 10px 12px;
            border-top: 1px solid #eef2ee;
            background: var(--white);
        }

        .chat-input-row input {
            flex: 1;
            min-width: 0;
            font-family: inherit;
            font-size: 14px;
            padding: 10px 13px;
            border: 1px solid #dfe5df;
            border-radius: 999px;
            outline: none;
        }

        .chat-input-row input:focus { border-color: var(--green); }

        .chat-send {
            width: 42px;
            height: 42px;
            flex: 0 0 42px;
            border: none;
            border-radius: 50%;
            background: var(--green-dark);
            color: var(--white);
            font-size: 16px;
            cursor: pointer;
        }

        .chat-send:hover { background: var(--green); }

        @media (max-width: 480px) {
            .chat-fab { right: 16px; bottom: 16px; }
            .chat-panel {
                right: 0;
                bottom: 0;
                width: 100%;
                max-width: 100%;
                height: 82vh;
                max-height: 82vh;
                border-radius: 18px 18px 0 0;
            }
        }