Copy the CSS below to: Elementor > Site Settings > Custom CSS

/* ============================================
   KESIN NEW MATERIALS - BRAND DESIGN SYSTEM
   Industrial Coating Enterprise Website
   ============================================ */

/* === CSS Custom Properties === */
:root {
    /* Primary Brand Colors */
    --kesin-blue: #1A5FB4;
    --kesin-blue-dark: #0D3B6F;
    --kesin-blue-light: #3584E4;
    --kesin-blue-pale: #E5F0FF;
    --kesin-accent: #FF6B35;

    /* Neutral Colors */
    --text-primary: #1a1a2e;
    --text-secondary: #555770;
    --text-light: #8e8ea0;
    --text-white: #ffffff;
    --bg-page: #FAFBFC;
    --bg-card: #FFFFFF;
    --bg-dark: #0D1B2A;
    --border-color: #E8ECF0;
    --border-light: #F0F2F5;

    /* Effects */
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
    --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
    --shadow-xl: 0 20px 60px rgba(0,0,0,0.18);
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* === Global Typography === */
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", sans-serif;
    color: var(--text-primary);
    background: var(--bg-page);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    line-height: 1.6;
}

h1 { font-size: clamp(28px, 5vw, 52px); font-weight: 800; line-height: 1.15; letter-spacing: -0.02em; }
h2 { font-size: clamp(24px, 4vw, 40px); font-weight: 700; line-height: 1.25; letter-spacing: -0.01em; }
h3 { font-size: clamp(20px, 3vw, 28px); font-weight: 600; line-height: 1.3; }
h4 { font-size: clamp(16px, 2vw, 22px); font-weight: 600; line-height: 1.4; }

a { color: var(--kesin-blue); transition: var(--transition); text-decoration: none; }
a:hover { color: var(--kesin-blue-dark); }

/* === Navigation === */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid transparent;
    transition: var(--transition);
}
.site-header.scrolled {
    background: rgba(255,255,255,0.98);
    border-bottom-color: var(--border-color);
    box-shadow: var(--shadow-sm);
}

/* === Buttons === */
.kesin-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 36px;
    font-weight: 600;
    font-size: 15px;
    border-radius: var(--radius-sm);
    border: none;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    letter-spacing: 0.01em;
}
.kesin-btn-primary {
    background: var(--kesin-blue);
    color: #fff;
}
.kesin-btn-primary:hover {
    background: var(--kesin-blue-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    color: #fff;
}
.kesin-btn-accent {
    background: var(--kesin-accent);
    color: #fff;
}
.kesin-btn-accent:hover {
    background: #e55a2b;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    color: #fff;
}
.kesin-btn-outline {
    background: transparent;
    color: var(--kesin-blue);
    border: 2px solid var(--kesin-blue);
}
.kesin-btn-outline:hover {
    background: var(--kesin-blue);
    color: #fff;
    transform: translateY(-2px);
}
.kesin-btn-white {
    background: #fff;
    color: var(--kesin-blue);
}
.kesin-btn-white:hover {
    background: var(--kesin-blue-pale);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* === Hero Banner === */
.hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #0D1B2A 0%, #1A3A5C 40%, #1A5FB4 100%);
    overflow: hidden;
}
.hero-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 30% 50%, rgba(53,132,228,0.3) 0%, transparent 50%),
                radial-gradient(ellipse at 70% 80%, rgba(26,95,180,0.2) 0%, transparent 50%);
    pointer-events: none;
}
.hero-content {
    position: relative;
    z-index: 2;
    max-width: 650px;
}
.hero-content h1 {
    color: #fff;
    font-size: clamp(32px, 6vw, 60px);
    margin-bottom: 20px;
}
.hero-content p {
    color: rgba(255,255,255,0.85);
    font-size: clamp(16px, 2vw, 20px);
    line-height: 1.8;
    margin-bottom: 36px;
}
.hero-cta-group {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

/* === Section Styles === */
.kesin-section {
    padding: 100px 0;
}
.kesin-section-dark {
    background: var(--bg-dark);
    color: #fff;
}
.kesin-section-gray {
    background: #F5F7FA;
}
.kesin-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}
.section-header {
    text-align: center;
    margin-bottom: 60px;
}
.section-header h2 {
    margin-bottom: 16px;
    color: var(--text-primary);
}
.section-header p {
    color: var(--text-secondary);
    font-size: 17px;
    max-width: 650px;
    margin: 0 auto;
}

/* === Advantage Cards (Homepage) === */
.advantage-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 24px;
}
.advantage-card {
    background: var(--bg-card);
    padding: 36px 24px;
    border-radius: var(--radius-md);
    text-align: center;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
    transition: var(--transition);
}
.advantage-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: var(--kesin-blue-pale);
}
.advantage-card .icon {
    font-size: 40px;
    margin-bottom: 16px;
}
.advantage-card .number {
    font-size: 36px;
    font-weight: 800;
    color: var(--kesin-blue);
    margin-bottom: 4px;
}
.advantage-card .label {
    color: var(--text-secondary);
    font-size: 14px;
}

/* === Product Cards === */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 28px;
}
.product-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
    transition: var(--transition);
    position: relative;
}
.product-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}
.product-card-img {
    width: 100%;
    height: 240px;
    background: linear-gradient(135deg, #E5F0FF, #F0F5FF);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 64px;
}
.product-card-body {
    padding: 24px;
}
.product-card-body h3 {
    margin-bottom: 8px;
}
.product-card-body p {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 16px;
}
.product-card-body .kesin-btn {
    width: 100%;
    justify-content: center;
}

/* === Solution Cards === */
.solution-card {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    padding: 32px;
    border-left: 4px solid var(--kesin-blue);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}
.solution-card:hover {
    box-shadow: var(--shadow-lg);
    border-left-color: var(--kesin-accent);
}

/* === News Cards === */
.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}
.news-card {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}
.news-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}
.news-card-body {
    padding: 24px;
}
.news-card .category-tag {
    display: inline-block;
    background: var(--kesin-blue-pale);
    color: var(--kesin-blue);
    padding: 4px 12px;
    border-radius: 100px;
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 12px;
}
.news-card .date {
    color: var(--text-light);
    font-size: 13px;
}

/* === Page Hero === */
.page-hero {
    background: linear-gradient(135deg, var(--kesin-blue) 0%, var(--kesin-blue-dark) 100%);
    color: #fff;
    padding: 120px 0 80px;
    text-align: center;
    position: relative;
    overflow: hidden;
}
.page-hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 30% 50%, rgba(255,255,255,0.08) 0%, transparent 60%);
    pointer-events: none;
}
.page-hero h1 {
    color: #fff;
    margin-bottom: 16px;
}

/* === Contact Cards === */
.contact-card {
    background: var(--bg-card);
    padding: 32px;
    border-radius: var(--radius-md);
    text-align: center;
    border: 1px solid var(--border-light);
    transition: var(--transition);
}
.contact-card:hover {
    box-shadow: var(--shadow-md);
}
.contact-card .icon {
    font-size: 36px;
    margin-bottom: 12px;
}
.contact-card h3 {
    margin-bottom: 8px;
}

/* === Footer === */
.site-footer {
    background: var(--bg-dark);
    color: rgba(255,255,255,0.75);
    padding: 70px 0 0;
    font-size: 14px;
}
.site-footer h4 {
    color: #fff;
    margin-bottom: 20px;
    font-size: 16px;
}
.site-footer a {
    color: rgba(255,255,255,0.6);
    transition: var(--transition);
}
.site-footer a:hover {
    color: #fff;
}
.site-footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 50px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}
.footer-bottom {
    padding: 24px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
}

/* === Breadcrumb === */
.kesin-breadcrumb {
    padding: 12px 0;
    font-size: 14px;
    color: var(--text-light);
}
.kesin-breadcrumb a {
    color: var(--text-secondary);
}
.kesin-breadcrumb span {
    margin: 0 8px;
}

/* === Table Style (Product Specs) === */
.kesin-table {
    width: 100%;
    border-collapse: collapse;
    margin: 24px 0;
    background: #fff;
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}
.kesin-table th, .kesin-table td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border-light);
}
.kesin-table th {
    background: #F5F7FA;
    font-weight: 600;
    color: var(--text-primary);
    font-size: 14px;
}
.kesin-table tr:last-child td {
    border-bottom: none;
}

/* === FAQ Accordion === */
.kesin-faq {
    margin: 30px 0;
}
.kesin-faq-item {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-sm);
    margin-bottom: 12px;
    overflow: hidden;
}
.kesin-faq-question {
    padding: 20px 24px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-primary);
}
.kesin-faq-question::after {
    content: '+';
    font-size: 20px;
    color: var(--kesin-blue);
    transition: var(--transition);
}
.kesin-faq-item.active .kesin-faq-question::after {
    content: '−';
}
.kesin-faq-answer {
    padding: 0 24px 20px;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* === CTA Banner === */
.cta-banner {
    background: linear-gradient(135deg, var(--kesin-blue) 0%, var(--kesin-blue-dark) 100%);
    color: #fff;
    text-align: center;
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}
.cta-banner::before {
    content: '';
    position: absolute;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: rgba(255,255,255,0.03);
    top: -200px;
    right: -100px;
}
.cta-banner h2 {
    color: #fff;
    margin-bottom: 16px;
}
.cta-banner p {
    color: rgba(255,255,255,0.85);
    font-size: 18px;
    margin-bottom: 30px;
}

/* === Timeline === */
.kesin-timeline {
    position: relative;
    padding-left: 30px;
}
.kesin-timeline::before {
    content: '';
    position: absolute;
    left: 8px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--kesin-blue-pale);
}
.kesin-timeline-item {
    position: relative;
    margin-bottom: 32px;
    padding: 20px 24px;
    background: #F5F7FA;
    border-radius: var(--radius-md);
    border-left: 4px solid var(--kesin-blue);
}
.kesin-timeline-item::before {
    content: '';
    position: absolute;
    left: -37px;
    top: 24px;
    width: 12px;
    height: 12px;
    background: var(--kesin-blue);
    border-radius: 50%;
    border: 3px solid #fff;
    box-shadow: 0 0 0 2px var(--kesin-blue);
}

/* === Stats Counter === */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 24px;
}
.stat-card {
    text-align: center;
    padding: 36px 24px;
    background: var(--bg-card);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}
.stat-number {
    font-size: 48px;
    font-weight: 800;
    color: var(--kesin-blue);
    margin-bottom: 8px;
}
.stat-label {
    color: var(--text-secondary);
    font-size: 15px;
}

/* === WA Button === */
.wa-float-btn {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 60px;
    height: 60px;
    background: #25D366;
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    box-shadow: 0 4px 20px rgba(37,211,102,0.4);
    z-index: 999;
    transition: var(--transition);
}
.wa-float-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 28px rgba(37,211,102,0.5);
    color: #fff;
}

/* === Animations === */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}
.animate-fadeInUp {
    animation: fadeInUp 0.6s ease-out forwards;
}
.animate-delay-1 { animation-delay: 0.1s; }
.animate-delay-2 { animation-delay: 0.2s; }
.animate-delay-3 { animation-delay: 0.3s; }
.animate-delay-4 { animation-delay: 0.4s; }

/* === Image Hover Effects === */
.img-hover-zoom {
    overflow: hidden;
}
.img-hover-zoom img {
    transition: transform 0.6s ease;
}
.img-hover-zoom:hover img {
    transform: scale(1.05);
}

/* === Partner Logo Wall === */
.logo-wall {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 40px;
}
.logo-wall img {
    filter: grayscale(100%);
    opacity: 0.5;
    transition: var(--transition);
    max-height: 48px;
}
.logo-wall img:hover {
    filter: grayscale(0%);
    opacity: 1;
    transform: translateY(-3px);
}

/* === WooCommerce Inquiry Mode === */
.woocommerce .price { display: none; }
.woocommerce div.product .summary .price { display: none; }
.woocommerce .product .add_to_cart_button::after { content: ' / 询价'; }
.woocommerce .single_add_to_cart_button { background: var(--kesin-blue) !important; border-radius: var(--radius-sm) !important; }
.woocommerce .single_add_to_cart_button:hover { background: var(--kesin-blue-dark) !important; }

/* === Responsive Design === */
@media (max-width: 1024px) {
    .kesin-section { padding: 70px 0; }
    .news-grid { grid-template-columns: repeat(2, 1fr); }
    .site-footer-grid { grid-template-columns: 1fr 1fr; }
    .page-hero { padding: 100px 0 60px; }
}

@media (max-width: 768px) {
    .kesin-section { padding: 50px 0; }
    .news-grid { grid-template-columns: 1fr; }
    .product-grid { grid-template-columns: 1fr; }
    .advantage-grid { grid-template-columns: repeat(2, 1fr); }
    .site-footer-grid { grid-template-columns: 1fr; gap: 32px; }
    .hero-cta-group { flex-direction: column; }
    .hero-cta-group .kesin-btn { width: 100%; justify-content: center; }
    .page-hero { padding: 80px 0 50px; }
    .section-header { margin-bottom: 36px; }
    .wa-float-btn { bottom: 20px; right: 20px; width: 50px; height: 50px; font-size: 24px; }
    .footer-bottom { flex-direction: column; text-align: center; }
}

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