/* ============================================================
   Respaite Technology - Main Stylesheet
   Design: Modern Industrial Tech - Deep Blue Theme
   ============================================================ */

:root {
    --deep-blue: #0a1f3f;
    --dark-blue: #0d2b5e;
    --mid-blue: #1a3f7a;
    --tech-blue: #0066ff;
    --accent-blue: #1e90ff;
    --light-blue: #3aa5ff;
    --cyan-accent: #00d4ff;
    --white: #ffffff;
    --light-gray: #f5f7fa;
    --gray: #8a94a6;
    --dark-gray: #4a5568;
    --text-primary: #1a202c;
    --text-secondary: #718096;
    --border-color: #e2e8f0;
    --gradient-hero: linear-gradient(135deg, #0a1f3f 0%, #0d2b5e 30%, #1a3f7a 60%, #0a1f3f 100%);
    --gradient-card: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
    --gradient-btn: linear-gradient(135deg, #0066ff 0%, #1e90ff 100%);
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 30px rgba(0,0,0,0.12);
    --shadow-xl: 0 20px 60px rgba(0,0,0,0.15);
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 20px;
    --max-width: 1280px;
    --header-height: 70px;
}

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

html { scroll-behavior: smooth; font-size: 16px; }
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
    color: var(--text-primary);
    background: var(--white);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; height: auto; display: block; }
button { cursor: pointer; border: none; font-family: inherit; }

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* ============================================================
   HEADER
   ============================================================ */
.site-header {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1000;
    background: rgba(10, 31, 63, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255,255,255,0.08);
    height: var(--header-height);
    transition: background 0.3s;
}

.header-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.logo { display: flex; align-items: center; gap: 10px; }
.logo img { height: 40px; }
.logo-text { font-size: 1.2rem; color: var(--white); }
.logo-text b { color: var(--accent-blue); font-weight: 700; }

.main-nav ul { display: flex; gap: 4px; }
.main-nav a {
    color: rgba(255,255,255,0.8);
    font-size: 0.92rem;
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    transition: all 0.25s;
    white-space: nowrap;
}
.main-nav a:hover,
.main-nav a.active {
    color: var(--white);
    background: rgba(30, 144, 255, 0.15);
}

.header-actions { display: flex; align-items: center; gap: 16px; }
.lang-switch { display: flex; align-items: center; gap: 0; font-size: 0.85rem; }
.lang-switch a {
    color: rgba(255,255,255,0.55);
    padding: 4px 8px;
    transition: color 0.2s;
    font-weight: 500;
}
.lang-switch a.active { color: var(--accent-blue); font-weight: 700; }
.lang-switch .lang-divider { color: rgba(255,255,255,0.25); }

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    padding: 4px;
}
.mobile-menu-btn span {
    width: 24px; height: 2px;
    background: var(--white);
    border-radius: 2px;
    transition: all 0.3s;
}

/* ============================================================
   HERO BANNER
   ============================================================ */
.hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-hero);
    overflow: hidden;
    padding-top: var(--header-height);
}
.hero-section::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 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='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}
.hero-particles {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
}
.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 800px;
    padding: 0 24px;
}
.hero-content h1 {
    font-size: 3.2rem;
    font-weight: 800;
    color: var(--white);
    line-height: 1.25;
    margin-bottom: 20px;
    letter-spacing: -0.5px;
}
.hero-content h1 .highlight {
    background: linear-gradient(135deg, var(--accent-blue), var(--cyan-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.hero-content .hero-subtitle {
    font-size: 1.25rem;
    color: rgba(255,255,255,0.7);
    margin-bottom: 40px;
    line-height: 1.7;
}
.hero-cta {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 50px;
    transition: all 0.3s;
    letter-spacing: 0.3px;
}
.btn-primary {
    background: var(--gradient-btn);
    color: var(--white);
    box-shadow: 0 4px 20px rgba(0, 102, 255, 0.35);
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 102, 255, 0.5);
}
.btn-outline {
    background: transparent;
    color: var(--white);
    border: 2px solid rgba(255,255,255,0.3);
}
.btn-outline:hover {
    background: rgba(255,255,255,0.1);
    border-color: rgba(255,255,255,0.6);
}
.hero-scroll {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    color: rgba(255,255,255,0.4);
    font-size: 1.5rem;
    animation: bounce 2s infinite;
}
@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
    40% { transform: translateX(-50%) translateY(-10px); }
    60% { transform: translateX(-50%) translateY(-5px); }
}

/* ============================================================
   SECTION COMMON
   ============================================================ */
.section { padding: 90px 0; }
.section-dark { background: var(--dark-blue); color: var(--white); }
.section-gray { background: var(--light-gray); }

.section-header { text-align: center; margin-bottom: 56px; }
.section-header h2 {
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--deep-blue);
    margin-bottom: 12px;
    position: relative;
    display: inline-block;
}
.section-header h2::after {
    content: '';
    display: block;
    width: 50px;
    height: 3px;
    background: var(--gradient-btn);
    margin: 12px auto 0;
    border-radius: 2px;
}
.section-dark .section-header h2 { color: var(--white); }
.section-header .section-subtitle {
    font-size: 1.05rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}
.section-dark .section-header .section-subtitle { color: rgba(255,255,255,0.6); }

/* ============================================================
   STATS SECTION
   ============================================================ */
.stats-section {
    background: var(--white);
    padding: 60px 0;
    position: relative;
    margin-top: -60px;
    z-index: 3;
}
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}
.stat-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 32px 20px;
    text-align: center;
    box-shadow: var(--shadow-lg);
    transition: transform 0.3s, box-shadow 0.3s;
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}
.stat-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: var(--gradient-btn);
}
.stat-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
}
.stat-value-wrap {
    font-size: 2.8rem;
    font-weight: 800;
    color: var(--deep-blue);
    line-height: 1;
    margin-bottom: 8px;
}
.stat-value-wrap .stat-suffix {
    font-size: 1.4rem;
    color: var(--accent-blue);
}
.stat-label {
    font-size: 0.95rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* ============================================================
   PRODUCTS SECTION
   ============================================================ */
.products-section { background: var(--light-gray); }
.product-tabs {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}
.product-tab {
    padding: 10px 24px;
    border-radius: 50px;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--dark-gray);
    background: var(--white);
    border: 1px solid var(--border-color);
    transition: all 0.3s;
}
.product-tab:hover { color: var(--accent-blue); border-color: var(--accent-blue); }
.product-tab.active {
    background: var(--gradient-btn);
    color: var(--white);
    border-color: transparent;
    box-shadow: 0 4px 15px rgba(0, 102, 255, 0.3);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 28px;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}
.product-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all 0.35s;
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
}
.product-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}
.product-card-image {
    height: 220px;
    background: linear-gradient(135deg, #eef2ff, #e0e7ff);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}
.product-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.product-card-image .product-placeholder {
    font-size: 3.5rem;
    color: var(--accent-blue);
    opacity: 0.4;
}
.product-card-body {
    padding: 20px;
    flex: 1;
    display: flex;
    flex-direction: column;
}
.product-card-body .product-category {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent-blue);
    background: rgba(30, 144, 255, 0.08);
    padding: 4px 12px;
    border-radius: 50px;
    margin-bottom: 10px;
    align-self: flex-start;
}
.product-card-body h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--deep-blue);
    margin-bottom: 8px;
    line-height: 1.4;
}
.product-card-body p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.product-card-body .btn-more {
    margin-top: 14px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--accent-blue);
    transition: gap 0.3s;
}
.product-card-body .btn-more:hover { gap: 10px; }

/* ============================================================
   SOLUTIONS SECTION
   ============================================================ */
.solutions-section { background: var(--white); }
.solutions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 20px;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}
.solution-card {
    background: var(--white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 28px 20px;
    text-align: center;
    transition: all 0.3s;
    cursor: default;
}
.solution-card:hover {
    border-color: var(--accent-blue);
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}
.solution-card .solution-icon {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(0,102,255,0.08), rgba(30,144,255,0.05));
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    font-size: 1.4rem;
    color: var(--accent-blue);
    transition: all 0.3s;
}
.solution-card:hover .solution-icon {
    background: var(--gradient-btn);
    color: var(--white);
}
.solution-card h3 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--deep-blue);
    margin-bottom: 8px;
}
.solution-card p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* ============================================================
   ABOUT SECTION
   ============================================================ */
.about-section { background: var(--light-gray); }
.about-content {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 56px;
    align-items: center;
}
.about-text h3 {
    font-size: 1.5rem;
    color: var(--deep-blue);
    margin-bottom: 16px;
}
.about-text p {
    color: var(--text-secondary);
    margin-bottom: 16px;
    line-height: 1.8;
}
.about-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-top: 24px;
}
.about-feature {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.92rem;
    color: var(--dark-gray);
}
.about-feature i {
    color: var(--accent-blue);
    font-size: 1.1rem;
}
.about-image {
    background: linear-gradient(135deg, #0d2b5e, #1a3f7a);
    border-radius: var(--radius-lg);
    min-height: 350px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
}
.about-image .about-placeholder {
    text-align: center;
    opacity: 0.6;
}
.about-image .about-placeholder i { font-size: 4rem; margin-bottom: 12px; }

/* ============================================================
   CERTIFICATIONS
   ============================================================ */
.certs-section { padding: 48px 0; background: var(--white); }
.certs-scroll {
    display: flex;
    justify-content: center;
    gap: 48px;
    flex-wrap: wrap;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}
.cert-item {
    text-align: center;
    color: var(--dark-gray);
}
.cert-item i {
    font-size: 2rem;
    color: var(--accent-blue);
    margin-bottom: 6px;
    display: block;
}
.cert-item span { font-size: 0.85rem; font-weight: 600; }

/* ============================================================
   NEWS SECTION
   ============================================================ */
.news-section { background: var(--white); }
.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 28px;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}
.news-card {
    background: var(--white);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    transition: all 0.3s;
}
.news-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}
.news-card-image {
    height: 180px;
    background: linear-gradient(135deg, #0d2b5e, #1a3f7a);
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255,255,255,0.4);
    font-size: 3rem;
}
.news-card-body { padding: 20px; }
.news-card-body .news-date {
    font-size: 0.8rem;
    color: var(--gray);
    margin-bottom: 8px;
}
.news-card-body h3 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--deep-blue);
    margin-bottom: 8px;
    line-height: 1.4;
}
.news-card-body p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.news-card-body .news-readmore {
    display: inline-block;
    margin-top: 12px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--accent-blue);
}
.news-cta { text-align: center; margin-top: 40px; }

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
    background: var(--deep-blue);
    color: rgba(255,255,255,0.7);
    padding: 64px 0 0;
}
.footer-container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}
.footer-col h4 {
    color: var(--white);
    font-size: 1rem;
    margin-bottom: 16px;
    font-weight: 700;
    position: relative;
    padding-bottom: 8px;
}
.footer-col h4::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0;
    width: 30px; height: 2px;
    background: var(--accent-blue);
}
.footer-col p { font-size: 0.9rem; line-height: 1.7; }
.footer-col ul li { margin-bottom: 8px; }
.footer-col ul li a {
    font-size: 0.9rem;
    color: rgba(255,255,255,0.6);
    transition: color 0.3s;
}
.footer-col ul li a:hover { color: var(--accent-blue); }
.footer-col ul li i { width: 16px; margin-right: 8px; color: var(--accent-blue); }
.social-links { display: flex; gap: 12px; }
.social-links a {
    width: 36px; height: 36px;
    border-radius: 50%;
    border: 1px solid rgba(255,255,255,0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255,255,255,0.6);
    transition: all 0.3s;
    font-size: 0.9rem;
}
.social-links a:hover {
    background: var(--accent-blue);
    border-color: var(--accent-blue);
    color: var(--white);
}
.footer-bottom {
    text-align: center;
    padding: 20px 0;
    font-size: 0.85rem;
    color: rgba(255,255,255,0.35);
}

/* ============================================================
   SUB PAGE BANNER
   ============================================================ */
.subpage-banner {
    background: var(--gradient-hero);
    padding: 140px 0 60px;
    text-align: center;
    color: var(--white);
}
.subpage-banner h1 {
    font-size: 2.4rem;
    font-weight: 800;
    margin-bottom: 8px;
}
.subpage-banner .breadcrumb {
    font-size: 0.9rem;
    color: rgba(255,255,255,0.6);
}
.subpage-banner .breadcrumb a { color: rgba(255,255,255,0.8); }
.subpage-banner .breadcrumb a:hover { color: var(--accent-blue); }

/* ============================================================
   PRODUCT DETAIL PAGE
   ============================================================ */
.product-detail-section { padding: 60px 0; }
.product-detail-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
}
.product-detail-image {
    background: linear-gradient(135deg, #eef2ff, #e0e7ff);
    border-radius: var(--radius-lg);
    min-height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.product-detail-image i { font-size: 6rem; color: var(--accent-blue); opacity: 0.3; }
.product-detail-info h1 { font-size: 1.8rem; color: var(--deep-blue); margin-bottom: 12px; }
.product-detail-info .product-meta {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 20px;
}
.product-category-badge {
    display: inline-block;
    padding: 4px 14px;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
    background: rgba(30, 144, 255, 0.08);
    color: var(--accent-blue);
}
.product-detail-info .product-description {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 28px;
}
.specs-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 28px;
}
.specs-table th, .specs-table td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}
.specs-table th {
    width: 120px;
    background: var(--light-gray);
    font-weight: 600;
    color: var(--deep-blue);
    font-size: 0.9rem;
}
.specs-table td { font-size: 0.9rem; color: var(--text-secondary); }
.features-list { list-style: none; }
.features-list li {
    padding: 8px 0;
    font-size: 0.95rem;
    color: var(--dark-gray);
    display: flex;
    align-items: flex-start;
    gap: 8px;
}
.features-list li::before {
    content: '\f00c';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    color: var(--accent-blue);
    margin-top: 2px;
}

/* ============================================================
   NEWS LIST & DETAIL
   ============================================================ */
.news-list-section { padding: 60px 0; }
.news-detail-section { padding: 60px 0; }
.news-detail-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 24px;
}
.news-detail-container .news-detail-date {
    color: var(--gray);
    font-size: 0.9rem;
    margin-bottom: 20px;
}
.news-detail-container h1 {
    font-size: 1.8rem;
    color: var(--deep-blue);
    margin-bottom: 24px;
}
.news-detail-container .news-detail-content {
    line-height: 1.9;
    color: var(--text-secondary);
}
.news-detail-container .news-detail-content p {
    margin-bottom: 16px;
}
.news-detail-container .news-detail-content h2,
.news-detail-container .news-detail-content h3 {
    color: var(--deep-blue);
    margin: 24px 0 12px;
}
.news-detail-back { margin-bottom: 24px; }

/* ============================================================
   ABOUT PAGE
   ============================================================ */
.about-page-section { padding: 60px 0; }
.about-page-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}
.about-page-container h2 { font-size: 1.8rem; color: var(--deep-blue); margin-bottom: 20px; }
.about-page-container p { color: var(--text-secondary); line-height: 1.9; margin-bottom: 16px; }
.about-page-container h3 { font-size: 1.3rem; color: var(--deep-blue); margin: 32px 0 12px; }
.about-page-container ul { list-style: disc; padding-left: 20px; margin-bottom: 16px; }
.about-page-container ul li { color: var(--text-secondary); margin-bottom: 8px; line-height: 1.7; }

/* ============================================================
   CONTACT PAGE
   ============================================================ */
.contact-section { padding: 60px 0; }
.contact-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
}
.contact-form { background: var(--white); padding: 32px; border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); border: 1px solid var(--border-color); }
.contact-form h3 { font-size: 1.3rem; color: var(--deep-blue); margin-bottom: 20px; }
.form-group { margin-bottom: 16px; }
.form-group label {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--dark-gray);
    margin-bottom: 6px;
}
.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    color: var(--text-primary);
    transition: border-color 0.3s;
    font-family: inherit;
}
.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px rgba(30, 144, 255, 0.08);
}
.form-group textarea { min-height: 140px; resize: vertical; }
.btn-submit {
    width: 100%;
    padding: 14px;
    background: var(--gradient-btn);
    color: var(--white);
    font-size: 1rem;
    font-weight: 600;
    border-radius: 50px;
    transition: all 0.3s;
    cursor: pointer;
}
.btn-submit:hover { box-shadow: 0 6px 24px rgba(0, 102, 255, 0.4); }
.contact-info-col { padding-top: 20px; }
.contact-info-col h3 { font-size: 1.3rem; color: var(--deep-blue); margin-bottom: 20px; }
.contact-info-item {
    display: flex;
    gap: 14px;
    margin-bottom: 24px;
    align-items: flex-start;
}
.contact-info-item i {
    width: 40px; height: 40px;
    border-radius: 50%;
    background: rgba(30, 144, 255, 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-blue);
    flex-shrink: 0;
}
.contact-info-item h4 { font-size: 0.95rem; color: var(--deep-blue); margin-bottom: 4px; }
.contact-info-item p { font-size: 0.9rem; color: var(--text-secondary); }

/* ============================================================
   PAGINATION
   ============================================================ */
.pagination {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 40px;
}
.pagination a, .pagination span {
    width: 36px; height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    border: 1px solid var(--border-color);
    color: var(--dark-gray);
    transition: all 0.2s;
}
.pagination a:hover { border-color: var(--accent-blue); color: var(--accent-blue); }
.pagination .active { background: var(--accent-blue); color: var(--white); border-color: var(--accent-blue); }

/* ============================================================
   EMPTY STATE
   ============================================================ */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--gray);
}
.empty-state i { font-size: 3rem; margin-bottom: 12px; display: block; }
.empty-state p { font-size: 1rem; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
    .about-content { grid-template-columns: 1fr; }
    .product-detail-container { grid-template-columns: 1fr; }
    .contact-container { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .main-nav { display: none; }
    .mobile-menu-btn { display: flex; }
    .main-nav.open {
        display: block;
        position: absolute;
        top: var(--header-height);
        left: 0; right: 0;
        background: rgba(10, 31, 63, 0.98);
        padding: 16px 0;
    }
    .main-nav.open ul { flex-direction: column; gap: 0; }
    .main-nav.open a { display: block; padding: 12px 24px; border-radius: 0; }
    .hero-content h1 { font-size: 2rem; }
    .hero-content .hero-subtitle { font-size: 1rem; }
    .section { padding: 56px 0; }
    .section-header h2 { font-size: 1.6rem; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
    .stat-value-wrap { font-size: 2rem; }
    .products-grid { grid-template-columns: 1fr; }
    .solutions-grid { grid-template-columns: repeat(2, 1fr); }
    .news-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .stats-section { margin-top: -30px; }
}

@media (max-width: 480px) {
    .solutions-grid { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: 1fr; }
}