/* ============================================
   TENDAPARTS.COM - Website Stylesheet v6
   Two main categories: EGR Valves / EGR Coolers
   Sub-categories by Vehicle brand
   Product card: image + OE Reference + TENDA NO
   ============================================ */

/* === Reset & Base === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
    font-family: 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    color: #2c3e50;
    line-height: 1.6;
    background: #f8f9fb;
    overflow-x: hidden;
}
a { color: inherit; text-decoration: none; transition: color .2s; }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* === Colors === */
:root {
    --primary: #1a3a5c;
    --primary-light: #2d5a8a;
    --primary-dark: #0f2540;
    --accent: #e87722;
    --accent-light: #f59648;
    --accent-dark: #c95f12;
    --dark: #0d1b2a;
    --light: #f0f4f8;
    --lighter: #f8f9fb;
    --gray: #7a8a99;
    --gray-light: #b0bcc8;
    --border: #e1e8ed;
    --success: #27ae60;
    --white: #ffffff;
    --shadow-sm: 0 1px 3px rgba(0,0,0,.06);
    --shadow-md: 0 4px 12px rgba(0,0,0,.08);
    --shadow-lg: 0 8px 24px rgba(0,0,0,.12);
    --shadow-xl: 0 16px 40px rgba(0,0,0,.15);
}

/* === Header === */
.header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: var(--white);
    box-shadow: var(--shadow-md);
    transition: all .3s;
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}
.logo { display: flex; align-items: center; gap: 10px; }
.logo img { height: 40px; width: auto; }
.logo-text { font-size: 20px; font-weight: 800; color: var(--primary); letter-spacing: .5px; }
.nav { display: flex; align-items: center; gap: 28px; }
.nav > a { font-size: 15px; font-weight: 600; color: #445566; position: relative; padding: 4px 0; transition: color .2s; }
.nav > a:hover, .nav > a.active { color: var(--accent); }
.nav > a.active::after { content: ''; position: absolute; bottom: -4px; left: 0; right: 0; height: 3px; background: var(--accent); border-radius: 2px; }

/* Nav Dropdown */
.nav-dropdown { position: relative; }
.nav-dropdown > a { font-size: 15px; font-weight: 600; color: #445566; padding: 4px 0; transition: color .2s; cursor: pointer; }
.nav-dropdown > a:hover, .nav-dropdown > a.active { color: var(--accent); }
.nav-dropdown > a.active::after { content: ''; position: absolute; bottom: -4px; left: 0; right: 0; height: 3px; background: var(--accent); border-radius: 2px; }
.nav-dropdown > a::after { content: ' \25BE'; font-size: 10px; }
.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 220px;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 10px;
    box-shadow: var(--shadow-lg);
    padding: 8px 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    transition: all .25s;
    z-index: 1001;
    max-height: 500px;
    overflow-y: auto;
}
.nav-dropdown:hover .dropdown-menu { opacity: 1; visibility: visible; transform: translateY(0); }
.dropdown-item {
    display: block;
    padding: 10px 20px;
    font-size: 14px;
    font-weight: 600;
    color: #445566;
    transition: all .15s;
}
.dropdown-item:hover { background: var(--light); color: var(--accent); padding-left: 24px; }

.btn-inquiry {
    background: var(--accent);
    color: #fff;
    padding: 10px 24px;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
    border: none;
    transition: all .2s;
    box-shadow: 0 2px 8px rgba(232,119,34,.3);
    display: inline-block;
}
.btn-inquiry:hover { background: var(--accent-light); transform: translateY(-1px); box-shadow: 0 4px 16px rgba(232,119,34,.4); }
.mobile-toggle { display: none; font-size: 24px; background: none; border: none; cursor: pointer; color: var(--primary); }

/* === Hero === */
.hero {
    position: relative;
    min-height: 420px;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 40%, var(--primary-light) 100%);
    color: #fff;
    overflow: hidden;
}
.hero::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0; right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--accent) 0%, var(--accent-light) 50%, var(--accent) 100%);
}
.hero-overlay { position: absolute; inset: 0; background: linear-gradient(135deg, rgba(15,37,64,.85) 0%, rgba(26,58,92,.7) 100%); }
.hero-content { position: relative; z-index: 2; max-width: 680px; padding: 50px 0; }
.hero h1 { font-size: 40px; font-weight: 800; line-height: 1.2; margin-bottom: 16px; text-shadow: 0 2px 8px rgba(0,0,0,.3); }
.hero p { font-size: 17px; line-height: 1.6; margin-bottom: 28px; opacity: .92; }
.btn-hero {
    display: inline-block;
    background: var(--accent);
    color: #fff;
    padding: 14px 36px;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 700;
    transition: all .2s;
    box-shadow: 0 4px 16px rgba(232,119,34,.4);
}
.btn-hero:hover { background: var(--accent-light); transform: translateY(-2px); box-shadow: 0 6px 24px rgba(232,119,34,.5); }

/* === Section === */
.section { padding: 60px 0; }
.section-light { background: var(--light); }
.section-title {
    text-align: center;
    font-size: 30px;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 36px;
    position: relative;
}
.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: var(--accent);
    margin: 12px auto 0;
    border-radius: 2px;
}

/* === Page Header === */
.page-header {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    color: #fff;
    padding: 40px 0;
    position: relative;
}
.page-header::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0; right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--accent) 0%, var(--accent-light) 50%, var(--accent) 100%);
}
.page-header h1 { font-size: 28px; font-weight: 800; }
.page-header p { font-size: 15px; opacity: .9; margin-top: 6px; }
.breadcrumb { font-size: 14px; opacity: .9; }
.breadcrumb a:hover { color: var(--accent); }

/* === Category Grid (homepage) === */
.cat-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    max-width: 800px;
    margin: 0 auto;
}
.cat-card {
    background: var(--white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all .3s;
    cursor: pointer;
    border: 1px solid var(--border);
    text-align: center;
    padding: 48px 24px;
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
}
.cat-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 4px;
    background: var(--accent);
    transform: scaleX(0);
    transition: transform .3s;
}
.cat-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-light);
}
.cat-card:hover::before { transform: scaleX(1); }
.cat-icon {
    width: 80px;
    height: 80px;
    margin-bottom: 16px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 32px;
    font-weight: 800;
    transition: all .3s;
}
.cat-icon-valve { background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%); }
.cat-icon-cooler { background: linear-gradient(135deg, var(--accent) 0%, var(--accent-light) 100%); }
.cat-card:hover .cat-icon { transform: scale(1.08); }
.cat-card h3 { font-size: 20px; font-weight: 700; color: var(--primary); margin-bottom: 8px; }
.cat-card p { font-size: 14px; color: var(--gray); line-height: 1.5; margin-bottom: 14px; }
.cat-link { font-size: 14px; font-weight: 700; color: var(--accent); }
.cat-card:hover .cat-link { color: var(--accent-dark); }

/* === Layout with Sidebar === */
.layout-with-sidebar {
    display: grid;
    grid-template-columns: 220px 1fr;
    gap: 30px;
    align-items: flex-start;
}
.sidebar {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 16px;
    position: sticky;
    top: 90px;
}
.sidebar-title {
    font-size: 14px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 12px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--accent);
}
.sidebar-item {
    display: block;
    padding: 8px 12px;
    font-size: 13px;
    font-weight: 600;
    color: #445566;
    border-radius: 6px;
    transition: all .15s;
    margin-bottom: 2px;
}
.sidebar-item:hover { background: var(--light); color: var(--accent); }
.sidebar-item.active { background: var(--primary); color: #fff; }

/* === Filter Bar === */
.filter-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    padding: 16px 20px;
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 10px;
    gap: 16px;
}
.search-input {
    flex: 1;
    max-width: 400px;
    padding: 10px 16px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 14px;
    outline: none;
    transition: border .2s;
    font-family: inherit;
}
.search-input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(232,119,34,.1); }
.result-count { font-size: 13px; color: var(--gray); font-weight: 600; white-space: nowrap; }

/* === Product Grid === */
.product-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}
.product-card {
    background: var(--white);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all .3s;
    border: 1px solid var(--border);
    display: flex;
    flex-direction: column;
}
.product-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-light);
}
.product-card-link {
    display: flex;
    flex-direction: column;
    height: 100%;
}
.product-card-img {
    width: 100%;
    height: 200px;
    background: #fff;
    border-bottom: 1px solid var(--border);
    overflow: hidden;
    position: relative;
}
.product-card-img img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    padding: 12px;
    transition: transform .3s;
}
.product-card:hover .product-card-img img { transform: scale(1.06); }

/* Product Card Body — per 未标题-1.jpg reference */
.product-card-body {
    padding: 14px;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

/* OE Reference label */
.oe-ref-label {
    font-size: 13px;
    font-weight: 700;
    color: var(--primary);
    padding-bottom: 6px;
    border-bottom: 1px solid var(--border);
}

/* OE Reference list — flex tags */
.oe-ref-list {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    flex: 1;
}

/* Individual OE number tag */
.oe-tag {
    display: inline-block;
    background: var(--lighter);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 3px 8px;
    font-size: 11px;
    font-weight: 600;
    color: var(--primary);
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    letter-spacing: 0.2px;
    transition: all .15s;
    white-space: nowrap;
}
.oe-tag:hover {
    background: #FFF3E0;
    border-color: var(--accent);
    color: var(--accent-dark);
}

/* "+X more" indicator */
.oe-more {
    display: inline-block;
    padding: 3px 8px;
    font-size: 11px;
    font-weight: 700;
    color: var(--accent);
    font-style: italic;
}

/* TENDA NO badge — bottom of card */
.tenda-no-badge {
    background: var(--primary);
    color: #fff;
    border-radius: 6px;
    padding: 6px 12px;
    font-size: 13px;
    font-weight: 700;
    text-align: center;
    margin-top: auto;
    letter-spacing: 0.5px;
}

/* === Product Detail Page === */
.product-detail {
    display: flex;
    gap: 40px;
    padding: 40px 0;
    align-items: flex-start;
}
.product-detail-left { flex: 0 0 440px; }
.product-detail-right { flex: 1; }
.product-detail-img {
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    overflow: hidden;
    background: #fff;
    border: 1px solid var(--border);
}
.product-detail-img img {
    width: 100%;
    height: 440px;
    object-fit: contain;
    padding: 20px;
}
.product-detail-right h1 {
    font-size: 26px;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 12px;
}

/* TENDA NO prominent display */
.tenda-no-display {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    color: #fff;
    border-radius: 8px;
    padding: 12px 20px;
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 24px;
}
.tenda-no-display strong { font-size: 22px; font-weight: 800; }

/* Product info table */
.product-info-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 24px;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}
.product-info-table th {
    background: var(--primary);
    color: #fff;
    padding: 10px 16px;
    text-align: left;
    font-size: 14px;
    font-weight: 600;
    width: 160px;
}
.product-info-table td {
    padding: 10px 16px;
    border-bottom: 1px solid var(--border);
    font-size: 14px;
    background: var(--white);
}
.product-info-table tr:nth-child(even) td { background: var(--lighter); }
.product-info-table tr:last-child td { border-bottom: none; }

/* OE Reference section on detail page */
.oe-ref-section {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 20px;
    margin-bottom: 24px;
}
.oe-ref-section .oe-ref-label {
    font-size: 16px;
    padding-bottom: 10px;
    margin-bottom: 14px;
    border-bottom: 2px solid var(--accent);
}
.oe-ref-full {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.oe-ref-full .oe-tag {
    font-size: 13px;
    padding: 5px 12px;
}

/* Applicable Vehicle Models */
.applicable-models {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 20px;
    margin-bottom: 24px;
}
.applicable-models h3 {
    font-size: 16px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 12px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--accent);
}
.applicable-models ul {
    list-style: none;
    padding: 0;
}
.applicable-models li {
    padding: 6px 0;
    font-size: 14px;
    color: #445566;
    border-bottom: 1px solid var(--border);
    padding-left: 20px;
    position: relative;
}
.applicable-models li::before {
    content: '\2022';
    position: absolute;
    left: 0;
    color: var(--accent);
    font-weight: 700;
}
.applicable-models li:last-child { border-bottom: none; }

/* Related Products */
.related-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}
.related-card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 8px;
    overflow: hidden;
    transition: all .3s;
}
.related-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: var(--accent-light); }
.related-card img {
    width: 100%;
    height: 140px;
    object-fit: contain;
    padding: 8px;
}
.related-info {
    padding: 8px 10px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.related-oe {
    font-size: 11px;
    font-weight: 600;
    color: var(--primary);
    font-family: 'Consolas', monospace;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.related-tenda {
    font-size: 11px;
    font-weight: 700;
    color: var(--accent);
}

/* === Features Grid (home) === */
.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}
.feature-item {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 28px 20px;
    text-align: center;
    transition: all .3s;
}
.feature-item:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: var(--accent-light); }
.feature-item h3 { font-size: 17px; color: var(--primary); margin-bottom: 6px; font-weight: 700; }
.feature-item p { font-size: 13px; color: var(--gray); }

/* === About Page === */
.about-banner {
    width: 100%;
    max-height: 400px;
    overflow: hidden;
    position: relative;
}
.about-banner img { width: 100%; height: 400px; object-fit: cover; }
.about-banner::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0; right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--accent) 0%, var(--accent-light) 50%, var(--accent) 100%);
}
.about-content { max-width: 900px; margin: 0 auto; }
.about-text p { font-size: 16px; line-height: 1.8; color: #555; margin-bottom: 18px; }
.about-text strong { color: var(--primary); font-weight: 700; }

/* Gallery Grid */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}
.gallery-item {
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
    transition: all .3s;
    aspect-ratio: 4/3;
}
.gallery-item:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.gallery-item img { width: 100%; height: 100%; object-fit: cover; transition: transform .3s; }
.gallery-item:hover img { transform: scale(1.05); }

/* === Contact Page === */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    padding: 20px 0;
}
.contact-info h2 { font-size: 24px; color: var(--primary); margin-bottom: 20px; font-weight: 800; }
.contact-table { width: 100%; border-collapse: collapse; border-radius: 10px; overflow: hidden; box-shadow: var(--shadow-sm); }
.contact-table th { background: var(--primary); color: #fff; padding: 12px 16px; text-align: left; font-size: 14px; font-weight: 600; width: 120px; }
.contact-table td { padding: 12px 16px; border-bottom: 1px solid var(--border); font-size: 14px; background: var(--white); }
.contact-table tr:nth-child(even) td { background: var(--lighter); }
.contact-table tr:last-child td { border-bottom: none; }
.contact-form {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 30px;
    box-shadow: var(--shadow-sm);
}
.contact-form h2 { font-size: 24px; color: var(--primary); margin-bottom: 20px; font-weight: 800; }
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 14px; font-weight: 700; margin-bottom: 6px; color: #445566; }
.form-group input, .form-group textarea, .form-group select {
    width: 100%; padding: 10px 14px; border: 1px solid var(--border); border-radius: 8px; font-size: 14px; outline: none; transition: border .2s; font-family: inherit;
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(232,119,34,.1); }
.form-group textarea { resize: vertical; min-height: 100px; }

/* === Pagination === */
.pagination {
    display: flex;
    justify-content: center;
    gap: 6px;
    margin-top: 40px;
}
.pagination button {
    min-width: 40px;
    height: 40px;
    padding: 0 12px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
    transition: all .2s;
    background: var(--white);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
}
.pagination button:hover { background: var(--light); border-color: var(--primary-light); }
.pagination button.active { background: var(--primary); color: #fff; border-color: var(--primary); }

/* === Footer === */
.footer { background: var(--dark); color: #aab4be; padding: 50px 0 0; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer-col h4 { color: #fff; font-size: 15px; margin-bottom: 16px; font-weight: 700; }
.footer-col p { font-size: 14px; line-height: 1.7; margin-bottom: 6px; }
.footer-col a { font-size: 14px; transition: color .2s; display: block; margin-bottom: 8px; }
.footer-col a:hover { color: var(--accent); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.1); padding: 20px 0; text-align: center; font-size: 13px; }

/* === Mobile Nav === */
.nav.nav-open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 70px;
    left: 0;
    right: 0;
    background: #fff;
    padding: 20px;
    box-shadow: var(--shadow-md);
    gap: 16px;
}
.nav.nav-open .nav-dropdown .dropdown-menu { position: static; opacity: 1; visibility: visible; transform: none; box-shadow: none; border: none; padding-left: 16px; max-height: none; }

/* === Responsive === */
@media (max-width: 1200px) {
    .product-grid { grid-template-columns: repeat(3, 1fr); }
    .features-grid { grid-template-columns: repeat(2, 1fr); }
    .gallery-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 900px) {
    .product-grid { grid-template-columns: repeat(2, 1fr); }
    .cat-grid { grid-template-columns: repeat(2, 1fr); }
    .features-grid { grid-template-columns: repeat(2, 1fr); }
    .gallery-grid { grid-template-columns: repeat(2, 1fr); }
    .product-detail { flex-direction: column; }
    .product-detail-left { flex: 0 0 auto; width: 100%; max-width: 440px; margin: 0 auto; }
    .contact-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .hero h1 { font-size: 32px; }
    .filter-bar { flex-direction: column; gap: 12px; }
    .about-banner img { height: 280px; }
    .layout-with-sidebar { grid-template-columns: 1fr; }
    .sidebar { position: static; }
    .related-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
    .nav { display: none; }
    .mobile-toggle { display: block; }
    .hero h1 { font-size: 26px; }
    .hero p { font-size: 15px; }
    .product-grid { grid-template-columns: 1fr; }
    .cat-grid { grid-template-columns: 1fr; }
    .features-grid { grid-template-columns: 1fr; }
    .gallery-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .section-title { font-size: 22px; }
    .product-card-img { height: 180px; }
    .product-detail-img img { height: 300px; }
    .related-grid { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .process-grid { grid-template-columns: 1fr; }
    .split-block { grid-template-columns: 1fr; gap: 30px; }
    .split-reverse { direction: ltr; }
    .split-reverse .split-image { order: 0; }
    .cert-grid { grid-template-columns: 1fr; }
    .about-banner-overlay h1 { font-size: 24px; }
    .kpi-row { flex-direction: column; }
}

/* ============================================
   ABOUT PAGE - New Section Styles (v6.1)
   ============================================ */

/* Hero banner with text overlay */
.about-banner {
    position: relative;
    overflow: hidden;
}
.about-banner-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    background: linear-gradient(90deg, rgba(15,23,42,.78) 0%, rgba(15,23,42,.35) 60%, rgba(15,23,42,0) 100%);
}
.about-banner-overlay h1 {
    color: #fff;
    font-size: 38px;
    font-weight: 800;
    letter-spacing: -.5px;
    margin-bottom: 10px;
    line-height: 1.15;
}
.about-banner-overlay p {
    color: rgba(255,255,255,.92);
    font-size: 16px;
    max-width: 620px;
    line-height: 1.55;
}

/* Section subtitle */
.section-subtitle {
    text-align: center;
    color: var(--gray);
    font-size: 15px;
    max-width: 720px;
    margin: -20px auto 40px;
    line-height: 1.6;
}

/* Stats strip */
.stats-strip { padding: 50px 0; }
.stats-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 30px;
}
.stat-item {
    text-align: center;
    padding: 10px;
    border-left: 1px solid rgba(0,0,0,.06);
}
.stat-item:first-child { border-left: 0; }
.stat-num {
    font-size: 36px;
    font-weight: 800;
    color: var(--primary);
    line-height: 1.1;
    letter-spacing: -.5px;
}
.stat-num span {
    font-size: 20px;
    font-weight: 600;
    margin-left: 2px;
    color: var(--accent);
}
.stat-label {
    margin-top: 8px;
    font-size: 13px;
    color: var(--gray);
    text-transform: uppercase;
    letter-spacing: .5px;
    font-weight: 600;
}

/* Process grid */
.process-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 10px;
}
.process-card {
    background: #fff;
    border: 1px solid rgba(0,0,0,.06);
    border-radius: 8px;
    padding: 30px 26px;
    transition: all .25s;
    position: relative;
}
.process-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--accent-light);
}
.process-num {
    font-size: 14px;
    font-weight: 800;
    color: var(--accent);
    letter-spacing: 1.5px;
    margin-bottom: 12px;
}
.process-card h3 {
    font-size: 18px;
    color: var(--primary);
    margin-bottom: 8px;
    font-weight: 700;
}
.process-card p {
    font-size: 14px;
    color: var(--gray);
    line-height: 1.65;
}

/* Split block (image + text) */
.split-block {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}
.split-reverse { direction: rtl; }
.split-reverse > * { direction: ltr; }
.split-reverse .split-image { order: 2; }

.split-text .eyebrow {
    display: inline-block;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--accent);
    margin-bottom: 12px;
}
.split-text h2 {
    font-size: 28px;
    font-weight: 800;
    color: var(--primary);
    line-height: 1.2;
    margin-bottom: 16px;
}
.split-text p {
    color: #555;
    line-height: 1.75;
    font-size: 15px;
    margin-bottom: 14px;
}
.split-image img {
    width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: var(--shadow-md);
}

/* Check list */
.check-list {
    list-style: none;
    margin-top: 18px;
    padding: 0;
}
.check-list li {
    padding-left: 28px;
    position: relative;
    color: #444;
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: 8px;
}
.check-list li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 7px;
    width: 16px;
    height: 16px;
    background: var(--accent);
    border-radius: 50%;
    box-shadow: inset 0 0 0 4px #fff;
}

/* KPI row */
.kpi-row {
    display: flex;
    gap: 30px;
    margin-top: 22px;
    padding-top: 22px;
    border-top: 1px solid rgba(0,0,0,.08);
}
.kpi {
    display: flex;
    flex-direction: column;
}
.kpi strong {
    font-size: 26px;
    color: var(--primary);
    font-weight: 800;
    letter-spacing: -.5px;
    line-height: 1.1;
}
.kpi span {
    font-size: 12px;
    color: var(--gray);
    text-transform: uppercase;
    letter-spacing: .5px;
    font-weight: 600;
    margin-top: 4px;
}

/* Certifications grid */
.cert-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 22px;
}
.cert-card {
    background: #fff;
    border: 1px solid rgba(0,0,0,.06);
    border-radius: 8px;
    padding: 26px 22px;
    text-align: center;
    transition: all .25s;
}
.cert-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    border-color: var(--accent-light);
}
.cert-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff;
    font-weight: 800;
    font-size: 14px;
    letter-spacing: .5px;
    margin-bottom: 14px;
    box-shadow: 0 6px 14px rgba(30,58,138,.25);
}
.cert-card h3 {
    font-size: 16px;
    color: var(--primary);
    margin-bottom: 8px;
    font-weight: 700;
}
.cert-card p {
    font-size: 13px;
    color: var(--gray);
    line-height: 1.6;
}