/* ==========================================================================
   Design Tokens & Responsive Utilities
   ========================================================================== */
:root {
    /* Color Palette */
    --bg-dark-navy: #0a1128;
    --bg-dark-card: rgba(16, 26, 56, 0.75);
    --bg-dark-accent: #0077b6;
    
    --primary-cyan: #00f5d4;
    --primary-blue: #00b4d8;
    --color-accent: #7b2cbf;
    
    --text-light: #f8f9fa;
    --text-muted: #a0aec0;
    --text-dim: #718096;
    
    --glass-bg: rgba(15, 23, 42, 0.7);
    --glass-border: rgba(255, 255, 255, 0.12);
    --glass-hover: rgba(0, 245, 212, 0.15);
    
    /* Typography */
    --font-family: 'Noto Sans SC', 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    
    /* Spacing & Layout */
    --container-max: 1240px;
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Shadows */
    --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.4);
    --shadow-xl: 0 25px 50px -12px rgba(0, 245, 212, 0.15);
}

/* Reset & Base Styles */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    background-color: var(--bg-dark-navy);
    color: var(--text-light);
    font-family: var(--font-family);
    line-height: 1.6;
    overflow-x: hidden;
    word-break: break-word;
    background-image: 
        radial-gradient(circle at 15% 15%, rgba(0, 180, 216, 0.08) 0%, transparent 40%),
        radial-gradient(circle at 85% 85%, rgba(0, 245, 212, 0.06) 0%, transparent 40%);
    background-attachment: fixed;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: var(--primary-cyan);
    text-decoration: none;
    transition: var(--transition-fast);
}

a:hover {
    color: #ffffff;
}

ul {
    list-style: none;
}

/* Reusable Components */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 1.5rem;
}

.section-padding {
    padding: 5rem 0;
}

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

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

.text-gradient {
    background: linear-gradient(135deg, var(--primary-cyan) 0%, var(--primary-blue) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    padding: 0.8rem 1.8rem;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    border: 1px solid transparent;
    cursor: pointer;
    transition: var(--transition-normal);
    min-height: 44px;
    touch-action: manipulation;
}

.btn-primary {
    background: linear-gradient(135deg, #00b4d8 0%, #0077b6 100%);
    color: #ffffff;
    box-shadow: 0 4px 14px rgba(0, 180, 216, 0.35);
}

.btn-primary:hover {
    background: linear-gradient(135deg, #00f5d4 0%, #00b4d8 100%);
    color: var(--bg-dark-navy);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 245, 212, 0.45);
}

.btn-outline {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-light);
    border-color: var(--glass-border);
    backdrop-filter: blur(10px);
}

.btn-outline:hover {
    border-color: var(--primary-cyan);
    color: var(--primary-cyan);
    background: rgba(0, 245, 212, 0.1);
    transform: translateY(-2px);
}

.btn-sm {
    padding: 0.5rem 1.2rem;
    font-size: 0.85rem;
    min-height: 38px;
}

.btn-lg {
    padding: 1rem 2.2rem;
    font-size: 1.05rem;
}

.btn-light {
    background: rgba(255, 255, 255, 0.9);
    color: var(--bg-dark-navy);
}

.btn-light:hover {
    background: #ffffff;
    color: var(--primary-blue);
}

/* Section Header */
.section-header {
    margin-bottom: 3.5rem;
}

.section-subtitle {
    display: inline-block;
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--primary-cyan);
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 0.5rem;
}

.section-title {
    font-size: clamp(1.6rem, 3.5vw, 2.4rem);
    font-weight: 800;
    color: var(--text-light);
    line-height: 1.3;
}

.title-bar {
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-cyan), var(--primary-blue));
    border-radius: var(--radius-full);
    margin: 1rem auto 1.2rem auto;
}

.title-bar.text-left {
    margin-left: 0;
}

.section-desc {
    color: var(--text-muted);
    font-size: 1rem;
    max-width: 680px;
    margin: 0 auto;
}

/* Header & Navigation */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 1.2rem 0;
    transition: var(--transition-normal);
}

.site-header.scrolled {
    background: rgba(10, 17, 40, 0.92);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
    padding: 0.8rem 0;
    box-shadow: var(--shadow-md);
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.header-logo-img {
    height: 42px;
    width: auto;
    object-fit: contain;
    transition: var(--transition-fast);
}

.main-nav .nav-list {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-link {
    color: var(--text-muted);
    font-weight: 500;
    font-size: 0.95rem;
    padding: 0.4rem 0;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-cyan);
    transition: var(--transition-fast);

    border-radius: var(--radius-full);
}

.nav-link:hover, .nav-link.active {
    color: #ffffff;
}

.nav-link:hover::after, .nav-link.active::after {
    width: 100%;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.lang-switch-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.45rem 0.9rem;
    border-radius: var(--radius-full);
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid var(--glass-border);
    color: var(--primary-cyan);
    font-size: 0.85rem;
    font-weight: 600;
    transition: var(--transition-fast);
}

.lang-switch-btn:hover {
    background: rgba(0, 245, 212, 0.15);
    border-color: var(--primary-cyan);
    color: #ffffff;
}

.header-icon-btn {
    width: 40px;
    height: 40px;
    min-height: 40px;
    padding: 0;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
}

.icp-link {
    color: var(--text-dim);
    margin-left: 0.4rem;
    transition: var(--transition-fast);
}

.icp-link:hover {
    color: var(--primary-cyan);
}

.mobile-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 20px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 1001;
}

.hamburger-bar {
    width: 100%;
    height: 2px;
    background-color: var(--text-light);
    border-radius: 2px;
    transition: var(--transition-fast);
}

/* Mobile Drawer */
.mobile-drawer {
    position: fixed;
    top: 0;
    right: -320px;
    width: 300px;
    height: 100vh;
    background: var(--bg-dark-navy);
    border-left: 1px solid var(--glass-border);
    z-index: 1002;
    padding: 2rem 1.5rem;
    display: flex;
    flex-direction: column;
    transition: right var(--transition-normal);
    box-shadow: var(--shadow-xl);
}

.mobile-drawer.open {
    right: 0;
}

.drawer-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--glass-border);
}

.drawer-logo-img {
    height: 34px;
    width: auto;
}

.drawer-close {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 1.8rem;
    cursor: pointer;
}

.drawer-nav {
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
}

.drawer-link {
    color: var(--text-light);
    font-size: 1.1rem;
    font-weight: 500;
    display: block;
    padding: 0.5rem 0;
}

.drawer-footer {
    margin-top: auto;
    padding-top: 1.5rem;
    border-top: 1px solid var(--glass-border);
    font-size: 0.85rem;
    color: var(--text-muted);
}

.drawer-footer p {
    margin-bottom: 0.5rem;
}

.drawer-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    z-index: 1001;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-fast);
}

.drawer-overlay.open {
    opacity: 1;
    visibility: visible;
}

/* Hero Section */
.hero-section {
    position: relative;
    padding: 10rem 0 6rem 0;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-grid-overlay {
    position: absolute;
    inset: 0;
    background-image: linear-gradient(to right, rgba(255, 255, 255, 0.03) 1px, transparent 1px),
                      linear-gradient(to bottom, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 40px 40px;
    pointer-events: none;
}

.hero-container {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 3.5rem;
    align-items: center;
    position: relative;
    z-index: 2;
}

.badge-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.4rem 1rem;
    border-radius: var(--radius-full);
    background: rgba(0, 245, 212, 0.1);
    border: 1px solid rgba(0, 245, 212, 0.2);
    color: var(--primary-cyan);
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.hero-title {
    font-size: clamp(2rem, 4.5vw, 3.4rem);
    font-weight: 900;
    line-height: 1.25;
    margin-bottom: 1.2rem;
    color: #ffffff;
}

.hero-subtitle {
    font-size: clamp(1rem, 1.8vw, 1.15rem);
    color: var(--text-muted);
    margin-bottom: 2.2rem;
    line-height: 1.7;
    max-width: 580px;
}

.hero-buttons {
    display: flex;
    gap: 1.2rem;
    margin-bottom: 3.5rem;
    flex-wrap: wrap;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    padding-top: 2rem;
    border-top: 1px solid var(--glass-border);
}

.stat-number {
    font-size: clamp(1.8rem, 3vw, 2.4rem);
    font-weight: 800;
    color: var(--primary-cyan);
}

.stat-unit {
    font-size: 1rem;
    font-weight: 700;
    color: var(--primary-blue);
}

.stat-label {
    display: block;
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 0.2rem;
}

/* Hero Visual Card Stack */
.visual-card-stack {
    position: relative;
}

.primary-card {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--glass-border);
}

.primary-card img {
    width: 100%;
    height: 420px;
    object-fit: cover;
    display: block;
}

.card-glass-tag {
    position: absolute;
    bottom: 1.5rem;
    left: 1.5rem;
    right: 1.5rem;
    padding: 1rem;
    background: rgba(10, 17, 40, 0.75);
    backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    gap: 0.8rem;
    color: #ffffff;
    font-weight: 600;
}

.card-glass-tag i {
    color: var(--primary-cyan);
    font-size: 1.2rem;
}

.visual-badge {
    position: absolute;
    padding: 0.8rem 1.2rem;
    background: rgba(15, 23, 42, 0.85);
    backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    gap: 0.8rem;
    box-shadow: var(--shadow-lg);
}

.visual-badge i {
    font-size: 1.5rem;
    color: var(--primary-cyan);
}

.visual-badge strong {
    display: block;
    font-size: 0.85rem;
    color: #ffffff;
}

.visual-badge span {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.floating-badge-1 {
    top: -1.5rem;
    right: -1rem;
    animation: float 4s ease-in-out infinite;
}

.floating-badge-2 {
    bottom: 3rem;
    left: -2rem;
    animation: float 5s ease-in-out infinite 1s;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
}

.mouse-icon {
    display: block;
    width: 24px;
    height: 40px;
    border: 2px solid var(--glass-border);
    border-radius: 12px;
    margin: 0 auto 0.4rem auto;
    position: relative;
}

.wheel {
    display: block;
    width: 4px;
    height: 8px;
    background: var(--primary-cyan);
    border-radius: 2px;
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll 2s infinite;
}

@keyframes scroll {
    0% { opacity: 1; transform: translate(-50%, 0); }
    100% { opacity: 0; transform: translate(-50%, 15px); }
}

.scroll-text {
    font-size: 0.75rem;
    color: var(--text-muted);
    letter-spacing: 1px;
}

/* About Us Section */
.about-grid {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 4rem;
    align-items: center;
}

.about-image-wrapper {
    position: relative;
}

.main-about-img {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--glass-border);
}

.experience-badge {
    position: absolute;
    bottom: -1.5rem;
    right: -1.5rem;
    background: linear-gradient(135deg, var(--primary-cyan), var(--primary-blue));
    color: var(--bg-dark-navy);
    padding: 1.5rem;
    border-radius: var(--radius-md);
    text-align: center;
    box-shadow: var(--shadow-lg);
}

.exp-years {
    display: block;
    font-size: 2.5rem;
    font-weight: 900;
    line-height: 1;
}

.exp-text {
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
}

.about-content h3 {
    font-size: 1.6rem;
    color: #ffffff;
    margin-bottom: 1.2rem;
}

.lead-text {
    font-size: 1.05rem;
    color: var(--text-light);
    margin-bottom: 1rem;
    font-weight: 500;
}

.body-text {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 2rem;
}

.feature-list {
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
}

.feature-box {
    display: flex;
    gap: 1.2rem;
    background: var(--glass-bg);
    padding: 1.2rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--glass-border);
    transition: var(--transition-fast);
}

.feature-box:hover {
    border-color: var(--primary-cyan);
    transform: translateX(5px);
}

.feature-icon {
    width: 46px;
    height: 46px;
    background: rgba(0, 245, 212, 0.1);
    color: var(--primary-cyan);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    flex-shrink: 0;
}

.feature-info h4 {
    color: #ffffff;
    font-size: 1.05rem;
    margin-bottom: 0.2rem;
}

.feature-info p {
    color: var(--text-muted);
    font-size: 0.88rem;
}

/* Product Section */
.product-tabs {
    display: flex;
    justify-content: center;
    gap: 0.8rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
    overflow-x: auto;
    padding-bottom: 0.5rem;
    -webkit-overflow-scrolling: touch;
}

.tab-btn {
    padding: 0.6rem 1.4rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
    color: var(--text-muted);
    border-radius: var(--radius-full);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-fast);
    white-space: nowrap;
    min-height: 42px;
}

.tab-btn:hover, .tab-btn.active {
    background: var(--primary-cyan);
    color: var(--bg-dark-navy);
    border-color: var(--primary-cyan);
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2rem;
}

.product-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: var(--transition-normal);
    display: flex;
    flex-direction: column;
}

.product-card:hover {
    transform: translateY(-8px);
    border-color: var(--primary-cyan);
    box-shadow: var(--shadow-xl);
}

.card-media {
    position: relative;
    height: 220px;
    overflow: hidden;
}

.card-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-slow);
}

.product-card:hover .card-media img {
    transform: scale(1.08);
}

.card-badge {
    position: absolute;
    top: 1rem;
    left: 1rem;
    background: rgba(10, 17, 40, 0.8);
    backdrop-filter: blur(8px);
    color: var(--primary-cyan);
    padding: 0.3rem 0.8rem;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 700;
    border: 1px solid var(--glass-border);
}

.card-overlay {
    position: absolute;
    inset: 0;
    background: rgba(10, 17, 40, 0.6);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition-fast);
}

.product-card:hover .card-overlay {
    opacity: 1;
}

.card-body {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.card-title {
    font-size: 1.1rem;
    color: #ffffff;
    margin-bottom: 0.6rem;
    line-height: 1.4;
}

.card-desc {
    font-size: 0.88rem;
    color: var(--text-muted);
    margin-bottom: 1.2rem;
    line-height: 1.5;
    flex-grow: 1;
}

.card-specs {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    padding-top: 0.8rem;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    font-size: 0.8rem;
    color: var(--text-dim);
}

.card-specs span i {
    color: var(--primary-cyan);
    margin-right: 0.4rem;
}

/* Equipment Section */
.equipment-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 1.8rem;
}

.equip-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    padding: 1.8rem;
    transition: var(--transition-normal);
    position: relative;
}

.equip-card:hover {
    border-color: var(--primary-cyan);
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.equip-icon {
    width: 50px;
    height: 50px;
    background: rgba(0, 180, 216, 0.15);
    color: var(--primary-cyan);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 1.2rem;
}

.equip-title {
    font-size: 1.1rem;
    color: #ffffff;
    margin-bottom: 0.6rem;
}

.equip-desc {
    font-size: 0.88rem;
    color: var(--text-muted);
    margin-bottom: 1.2rem;
    line-height: 1.5;
}

.equip-tag {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--primary-cyan);
    background: rgba(0, 245, 212, 0.08);
    padding: 0.2rem 0.6rem;
    border-radius: var(--radius-sm);
}

/* Quality Control Section */
.quality-wrapper {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 3.5rem;
    align-items: center;
}

.quality-list {
    display: flex;
    flex-direction: column;
    gap: 1.8rem;
    margin-top: 2rem;
}

.quality-list li {
    display: flex;
    gap: 1.5rem;
}

.step-num {
    font-size: 1.5rem;
    font-weight: 900;
    color: var(--primary-cyan);
    background: rgba(0, 245, 212, 0.1);
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.quality-list strong {
    display: block;
    font-size: 1.1rem;
    color: #ffffff;
    margin-bottom: 0.3rem;
}

.quality-list p {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.cert-card {
    background: linear-gradient(135deg, rgba(0, 119, 182, 0.2), rgba(123, 44, 191, 0.2));
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(16px);
    border-radius: var(--radius-lg);
    padding: 3rem 2rem;
    text-align: center;
    box-shadow: var(--shadow-xl);
}

.cert-card i {
    font-size: 3.5rem;
    color: var(--primary-cyan);
    margin-bottom: 1rem;
}

.cert-card h3 {
    font-size: 1.6rem;
    color: #ffffff;
    margin-bottom: 0.4rem;
}

.cert-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

.cert-divider {
    height: 1px;
    background: rgba(255, 255, 255, 0.1);
    margin: 1.5rem 0;
}

.cert-specs {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    font-size: 0.9rem;
    color: var(--text-light);
}

.cert-specs i {
    font-size: 1rem;
    color: var(--primary-cyan);

}

/* Contact Section (Clean Centered Layout) */
.clean-centered-contact {
    display: block;
    max-width: 880px;
    margin: 0 auto;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(16px);
    border-radius: var(--radius-lg);
    padding: 3.5rem 3rem;
    box-shadow: var(--shadow-xl);
    text-align: center;
}

.contact-header-block {
    margin-bottom: 2.2rem;
    padding-bottom: 1.8rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.contact-logo-img {
    max-height: 52px;
    margin-bottom: 1rem;
}

.company-name-cn {
    font-size: clamp(1.4rem, 3vw, 1.85rem);
    font-weight: 800;
    color: #ffffff;
    margin-bottom: 0.2rem;
}

.company-name-en {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--primary-cyan);
    margin-bottom: 1rem;
    letter-spacing: 0.5px;
}

.company-intro {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.6;
    max-width: 680px;
    margin: 0 auto;
}

.info-grid-2x2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    text-align: left;
}

.info-list {
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
}

.info-item {
    display: flex;
    align-items: flex-start;
    gap: 1.2rem;
}

.info-icon {
    width: 42px;
    height: 42px;
    background: rgba(0, 245, 212, 0.1);
    color: var(--primary-cyan);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    flex-shrink: 0;
}

.info-label {
    display: block;
    font-size: 0.78rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 0.2rem;
}

.info-value {
    font-size: 1rem;
    color: #ffffff;
    font-weight: 600;
}

.info-value a {
    color: #ffffff;
}

.info-value a:hover {
    color: var(--primary-cyan);
}

.contact-action-box {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.action-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-md);
    padding: 2.5rem 2.2rem;
    transition: var(--transition-normal);
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 1.2rem;
}

.action-card:hover {
    background: rgba(0, 245, 212, 0.04);
    border-color: rgba(0, 245, 212, 0.3);
}

.clean-action-card {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: stretch;
    gap: 1.2rem;
    padding: 3rem 2.2rem;
}

.action-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.action-header h4 {
    font-size: 1.15rem;
    color: #ffffff;
    font-weight: 700;
    margin-bottom: 0.2rem;
}

.action-subtitle-tag {
    font-size: 0.8rem;
    color: var(--primary-cyan);
    font-weight: 600;
}

.email-guide-list {
    display: flex;
    flex-direction: column;
    gap: 0.9rem;
    margin-bottom: 1.8rem;
}

.email-guide-list li {
    display: flex;
    align-items: flex-start;
    gap: 0.8rem;
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.5;
}

.email-guide-list li i {
    color: var(--primary-cyan);
    margin-top: 0.2rem;
    font-size: 1rem;
    flex-shrink: 0;
}

.email-guide-list li strong {
    color: #ffffff;
    font-weight: 600;
}

.action-button-group {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.action-icon {
    width: 44px;
    height: 44px;
    background: rgba(0, 119, 182, 0.2);
    color: var(--primary-cyan);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    margin-bottom: 1rem;
}

.action-card h4 {
    color: #ffffff;
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.action-card p {
    color: var(--text-muted);
    font-size: 0.88rem;
    line-height: 1.5;
    margin-bottom: 1.2rem;
}

.btn-block {
    display: flex;
    width: 100%;
    justify-content: center;
    align-items: center;
    gap: 0.6rem;
    text-align: center;
}

.qr-box {
    display: flex;
    align-items: center;
    gap: 1.2rem;
    background: rgba(0, 245, 212, 0.08);
    border: 1px dashed var(--primary-cyan);
    border-radius: var(--radius-md);
    padding: 1.2rem 1.5rem;
}

.qr-box i {
    font-size: 2.2rem;
    color: var(--primary-cyan);
}

.qr-box strong {
    display: block;
    color: #ffffff;
    font-size: 0.92rem;
    margin-bottom: 0.2rem;
}

.qr-box span {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* Footer */
.site-footer {
    background: rgba(5, 10, 24, 0.95);
    border-top: 1px solid var(--glass-border);
    padding: 4rem 0 2rem 0;
}

.footer-top {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1.2fr 1.4fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-col h4 {
    font-size: 1.1rem;
    color: #ffffff;
    margin-bottom: 1.2rem;
    position: relative;
}

.footer-col h4::after {
    content: '';
    display: block;
    width: 30px;
    height: 2px;
    background: var(--primary-cyan);
    margin-top: 0.5rem;
}

.footer-desc {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-top: 1rem;
    line-height: 1.6;
}

.footer-col ul {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

.footer-col ul a {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.footer-col ul a:hover {
    color: var(--primary-cyan);
    padding-left: 5px;
}

.contact-col p {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 0.8rem;
    display: flex;
    align-items: flex-start;
    gap: 0.6rem;
}

.contact-col p i {
    color: var(--primary-cyan);
    margin-top: 0.2rem;
}

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    text-align: center;
    font-size: 0.85rem;
    color: var(--text-dim);
}

/* Modal Popup */
.modal {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(8px);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-fast);
}

.modal.active {
    opacity: 1;
    visibility: visible;
}

.modal-dialog {
    width: 100%;
    max-width: 650px;
    background: var(--bg-dark-navy);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    position: relative;
    overflow: hidden;
}

.modal-content {
    padding: 2.5rem;
    max-height: 85vh;
    overflow-y: auto;
}

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1.2rem;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    color: #ffffff;
    font-size: 1.6rem;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
}

.modal-close:hover {
    background: var(--primary-cyan);
    color: var(--bg-dark-navy);
}

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 46px;
    height: 46px;
    background: var(--primary-cyan);
    color: var(--bg-dark-navy);
    border: none;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-normal);
    z-index: 900;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-4px);
    background: #ffffff;
}

/* ==========================================================================
   Responsive Media Queries (Mobile, Tablet, Desktop)
   ========================================================================== */

/* Tablet & Mobile Screens (<= 992px) */
@media (max-width: 992px) {
    .main-nav {
        display: none;
    }
    
    .mobile-toggle {
        display: flex;
    }
    
    .hero-container {
        grid-template-columns: 1fr;
        gap: 3rem;
        text-align: center;
    }
    
    .hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .hero-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }

    .experience-badge {
        right: 1rem;
        bottom: -1rem;
        padding: 1rem;
    }
    
    .quality-wrapper {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }

    .contact-featured-card {
        grid-template-columns: 1fr;
        padding: 2.2rem;
        gap: 2.5rem;
    }

    .footer-top {
        grid-template-columns: repeat(2, 1fr);
        gap: 2rem;
    }
}

/* Mobile Devices (<= 576px) */
@media (max-width: 576px) {
    .container {
        padding: 0 1.2rem;
    }

    .section-padding {
        padding: 3.5rem 0;
    }

    .header-logo-img {
        height: 34px;
    }

    .lang-switch-btn span {
        display: none;
    }

    .hero-section {
        padding: 7.5rem 0 4rem 0;
    }

    .hero-title {
        font-size: 1.85rem;
    }

    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }

    .hero-buttons .btn {
        width: 100%;
    }

    .hero-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.2rem;
    }

    .stat-number {
        font-size: 1.6rem;
    }

    .primary-card img {
        height: 280px;
    }

    .floating-badge-1, .floating-badge-2 {
        display: none; /* Hide extra badges on small screens for clean visual */
    }

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

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

    .contact-featured-card {
        padding: 1.5rem;
    }

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

    .modal-content {
        padding: 1.5rem;
    }

    .back-to-top {
        bottom: 1.2rem;
        right: 1.2rem;
        width: 40px;
        height: 40px;
    }
}

/* ==========================================================================
   Partners Showcase Marquee Section
   ========================================================================== */
.partners-section {
    background: linear-gradient(180deg, rgba(10, 17, 40, 0.4) 0%, rgba(16, 26, 56, 0.8) 100%);
    overflow: hidden;
    position: relative;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.marquee-wrapper {
    width: 100%;
    overflow: hidden;
    position: relative;
    padding: 1.8rem 0;
    margin-top: 1rem;
    mask-image: linear-gradient(to right, transparent 0%, black 10%, black 90%, transparent 100%);
    -webkit-mask-image: linear-gradient(to right, transparent 0%, black 10%, black 90%, transparent 100%);
}

.marquee-track {
    display: flex;
    gap: 2rem;
    width: max-content;
    animation: marqueeScroll 28s linear infinite;
}

.marquee-track:hover {
    animation-play-state: paused;
}

@keyframes marqueeScroll {
    0% {
        transform: translateX(0);
    }
    100% {
        transform: translateX(-50%);
    }
}

.partner-card {
    flex: 0 0 auto;
    width: 230px;
    height: 105px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.35rem;
    padding: 1.2rem;
    transition: var(--transition-normal);
    cursor: pointer;
    backdrop-filter: blur(12px);
    box-shadow: var(--shadow-sm);
}

.partner-card:hover {
    border-color: var(--primary-cyan);
    background: rgba(0, 245, 212, 0.08);
    transform: translateY(-4px);
    box-shadow: 0 12px 28px rgba(0, 245, 212, 0.22);
}

.partner-name {
    font-family: 'Outfit', sans-serif;
    font-size: 1.4rem;
    font-weight: 800;
    letter-spacing: 1.5px;
    color: #ffffff;
    background: linear-gradient(135deg, #ffffff 0%, #cbd5e0 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-transform: uppercase;
}

.partner-card:hover .partner-name {
    background: linear-gradient(135deg, var(--primary-cyan) 0%, var(--primary-blue) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.partner-sub {
    font-size: 0.82rem;
    color: var(--text-muted);
    font-weight: 500;
}