/*
Theme Name: Kezhibo Industrial
Theme URI: https://www.kezhibo.com/
Author: Kezhibo Dev Team
Author URI: https://www.kezhibo.com/
Description: Enterprise-grade WordPress theme by Xiamen Kezhibo New Material Technology Co., Ltd. Designed for polymer membrane manufacturers, featuring product showcase, inquiry system, multilingual support, and advanced SEO optimization.
Version: 1.0.0
Requires at least: 6.0
Tested up to: 6.5
Requires PHP: 8.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: kezhibo
Domain Path: /languages
Tags: industrial, business, corporate, manufacturing, portfolio, custom-logo, custom-menu, featured-images, threaded-comments, translation-ready, block-styles, wide-blocks, full-site-editing
*/

/* ==========================================================================
   0. CSS Variables — Design Tokens
   ========================================================================== */
:root {
    /* Brand Colors — Tech Blue / Industrial */
    --kb-primary: #0a3d7c;
    --kb-primary-dark: #062a56;
    --kb-primary-light: #1565c0;
    --kb-accent: #0084d6;
    --kb-accent-hover: #0073bd;

    /* Neutrals */
    --kb-white: #ffffff;
    --kb-gray-50: #f8fafc;
    --kb-gray-100: #f1f5f9;
    --kb-gray-200: #e2e8f0;
    --kb-gray-300: #cbd5e1;
    --kb-gray-400: #94a3b8;
    --kb-gray-500: #64748b;
    --kb-gray-600: #475569;
    --kb-gray-700: #334155;
    --kb-gray-800: #1e293b;
    --kb-gray-900: #0f172a;
    --kb-black: #000000;

    /* Semantic */
    --kb-success: #22c55e;
    --kb-warning: #f59e0b;
    --kb-error: #ef4444;

    /* Typography */
    --kb-font-sans: "Helvetica Neue", "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
    --kb-font-mono: "SF Mono", "Fira Code", "Consolas", monospace;

    /* Spacing */
    --kb-container: 1200px;
    --kb-radius: 8px;
    --kb-radius-lg: 16px;
    --kb-transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --kb-shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --kb-shadow: 0 4px 12px rgba(0,0,0,0.1);
    --kb-shadow-lg: 0 12px 32px rgba(0,0,0,0.15);
}

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

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

body {
    font-family: var(--kb-font-sans);
    font-size: 1rem;
    line-height: 1.7;
    color: var(--kb-gray-700);
    background: var(--kb-white);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: var(--kb-primary-light);
    text-decoration: none;
    transition: color var(--kb-transition);
}

a:hover {
    color: var(--kb-accent);
}

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

ul, ol {
    list-style: none;
}

/* ==========================================================================
   2. Layout Utilities
   ========================================================================== */
.kb-container {
    max-width: var(--kb-container);
    margin: 0 auto;
    padding: 0 20px;
}

.kb-section {
    padding: 80px 0;
}

.kb-section--gray {
    background: var(--kb-gray-50);
}

.kb-section--dark {
    background: var(--kb-primary-dark);
    color: rgba(255,255,255,0.85);
}

.kb-grid {
    display: grid;
    gap: 30px;
}

.kb-grid--2 { grid-template-columns: repeat(2, 1fr); }
.kb-grid--3 { grid-template-columns: repeat(3, 1fr); }
.kb-grid--4 { grid-template-columns: repeat(4, 1fr); }

.kb-text-center { text-align: center; }
.kb-text-right { text-align: right; }
.kb-mt-1 { margin-top: 10px; }
.kb-mt-2 { margin-top: 20px; }
.kb-mt-3 { margin-top: 30px; }
.kb-mt-4 { margin-top: 40px; }

/* ==========================================================================
   3. Typography
   ========================================================================== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.3;
    color: var(--kb-gray-900);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.1rem; }
h6 { font-size: 1rem; }

.kb-section-title {
    font-size: 2rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 12px;
    position: relative;
}

.kb-section-subtitle {
    text-align: center;
    color: var(--kb-gray-500);
    font-size: 1rem;
    margin-bottom: 50px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.kb-section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: var(--kb-accent);
    margin: 15px auto 0;
    border-radius: 2px;
}

/* ==========================================================================
   4. Buttons
   ========================================================================== */
.kb-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 32px;
    font-size: 0.95rem;
    font-weight: 600;
    border: none;
    border-radius: var(--kb-radius);
    cursor: pointer;
    transition: all var(--kb-transition);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

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

.kb-btn--primary:hover {
    background: var(--kb-primary-dark);
    color: var(--kb-white);
    transform: translateY(-2px);
    box-shadow: var(--kb-shadow-lg);
}

.kb-btn--accent {
    background: var(--kb-accent);
    color: var(--kb-white);
}

.kb-btn--accent:hover {
    background: var(--kb-accent-hover);
    color: var(--kb-white);
    transform: translateY(-2px);
}

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

.kb-btn--outline:hover {
    background: var(--kb-white);
    color: var(--kb-primary);
}

.kb-btn--lg {
    padding: 16px 40px;
    font-size: 1.05rem;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible,
[tabindex]:focus-visible {
    outline: 3px solid var(--kb-accent);
    outline-offset: 2px;
}

/* ==========================================================================
   5. Header & Navigation
   ========================================================================== */
.kb-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(255,255,255,0.98);
    backdrop-filter: blur(10px);
    box-shadow: var(--kb-shadow-sm);
    transition: all var(--kb-transition);
}

.kb-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

.kb-header__logo img {
    max-height: 50px;
    width: auto;
}

.kb-header__logo-text {
    font-size: 1.3rem;
    font-weight: 800;
    color: var(--kb-primary);
    line-height: 1.2;
}

.kb-header__logo-text small {
    display: block;
    font-size: 0.7rem;
    color: var(--kb-gray-500);
    font-weight: 400;
    letter-spacing: 1px;
}

/* Primary Nav */
.kb-nav {
    display: flex;
    align-items: center;
    gap: 0;
}

.kb-nav__menu {
    display: flex;
    align-items: center;
    gap: 0;
    list-style: none;
}

.kb-nav__menu > li > a {
    display: block;
    padding: 30px 18px;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--kb-gray-700);
    position: relative;
    transition: color var(--kb-transition);
}

.kb-nav__menu > li > a::after {
    content: '';
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 3px;
    background: var(--kb-accent);
    border-radius: 2px;
    transition: width var(--kb-transition);
}

.kb-nav__menu > li > a:hover,
.kb-nav__menu > li.current-menu-item > a {
    color: var(--kb-primary);
}

.kb-nav__menu > li > a:hover::after,
.kb-nav__menu > li.current-menu-item > a::after {
    width: 24px;
}

/* Dropdown */
.kb-nav__menu .sub-menu {
    position: absolute;
    top: 80px;
    left: 0;
    background: var(--kb-white);
    min-width: 220px;
    box-shadow: var(--kb-shadow-lg);
    border-radius: 0 0 var(--kb-radius) var(--kb-radius);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all var(--kb-transition);
    padding: 10px 0;
}

.kb-nav__menu li:hover > .sub-menu,
.kb-nav__menu li:focus-within > .sub-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.kb-nav__menu .sub-menu li a {
    display: block;
    padding: 12px 20px;
    font-size: 0.9rem;
    color: var(--kb-gray-600);
    transition: all var(--kb-transition);
}

.kb-nav__menu .sub-menu li a:hover {
    background: var(--kb-gray-50);
    color: var(--kb-primary);
    padding-left: 26px;
}

/* Language switcher */
.kb-lang-switcher {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-left: 20px;
    padding-left: 20px;
    border-left: 1px solid var(--kb-gray-200);
}

.kb-lang-switcher a {
    font-size: 0.85rem;
    padding: 4px 10px;
    border-radius: 4px;
    color: var(--kb-gray-500);
    transition: all var(--kb-transition);
}

.kb-lang-switcher a.active,
.kb-lang-switcher a:hover {
    background: var(--kb-primary);
    color: var(--kb-white);
}

/* Mobile toggle */
.kb-mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 10px;
    background: transparent;
    border: none;
    align-items: center;
    justify-content: center;
}

.kb-mobile-toggle span {
    width: 26px;
    height: 3px;
    background: var(--kb-gray-700);
    border-radius: 2px;
    transition: all var(--kb-transition);
}

.kb-mobile-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}
.kb-mobile-toggle.active span:nth-child(2) {
    opacity: 0;
}
.kb-mobile-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* Mobile menu — hidden by default; shown only on ≤1023px via responsive.css */
.kb-mobile-menu {
    display: none;
}

/* ==========================================================================
   6. Hero Banner / Slider
   ========================================================================== */
.kb-hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
    overflow: hidden;
    margin-top: 0;
}

.kb-hero__slides {
    position: relative;
    width: 100%;
    height: 100%;
}

.kb-hero__slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1s ease-in-out;
    display: flex;
    align-items: center;
    justify-content: center;
}

.kb-hero__slide.active {
    opacity: 1;
}

.kb-hero__slide::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(6,42,86,0.85) 0%, rgba(10,61,124,0.6) 100%);
    z-index: 1;
}

.kb-hero__slide-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 0;
}

.kb-hero__content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: var(--kb-white);
    max-width: 800px;
    padding: 0 20px;
    animation: kbFadeUp 1s ease-out;
}

.kb-hero__title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
    text-shadow: 0 2px 20px rgba(0,0,0,0.3);
}

.kb-hero__subtitle {
    font-size: 1.3rem;
    margin-bottom: 35px;
    opacity: 0.9;
    font-weight: 300;
}

.kb-hero__actions {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

/* Slider controls */
.kb-hero__dots {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 3;
}

.kb-hero__dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255,255,255,0.4);
    cursor: pointer;
    transition: all var(--kb-transition);
    border: none;
}

.kb-hero__dot.active {
    background: var(--kb-white);
    width: 36px;
    border-radius: 6px;
}

.kb-hero__arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: rgba(255,255,255,0.15);
    border: 2px solid rgba(255,255,255,0.3);
    color: var(--kb-white);
    font-size: 1.5rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--kb-transition);
    z-index: 3;
}

.kb-hero__arrow:hover {
    background: rgba(255,255,255,0.3);
}

.kb-hero__arrow--prev { left: 30px; }
.kb-hero__arrow--next { right: 30px; }

@keyframes kbFadeUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ==========================================================================
   7. Product Overview Grid
   ========================================================================== */
.kb-products-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.kb-product-card {
    position: relative;
    border-radius: var(--kb-radius-lg);
    overflow: hidden;
    box-shadow: var(--kb-shadow-sm);
    transition: all var(--kb-transition);
    background: var(--kb-white);
    cursor: pointer;
}

.kb-product-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--kb-shadow-lg);
}

.kb-product-card__image {
    position: relative;
    height: 260px;
    overflow: hidden;
    background: var(--kb-gray-100);
}

.kb-product-card__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.kb-product-card:hover .kb-product-card__image img {
    transform: scale(1.1);
}

.kb-product-card__overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to top, rgba(10,61,124,0.9) 0%, transparent 60%);
    display: flex;
    align-items: flex-end;
    justify-content: center;
    padding-bottom: 25px;
    opacity: 0;
    transition: opacity var(--kb-transition);
}

.kb-product-card:hover .kb-product-card__overlay {
    opacity: 1;
}

.kb-product-card__overlay .kb-btn {
    transform: translateY(20px);
    transition: transform 0.4s ease 0.1s;
}

.kb-product-card:hover .kb-product-card__overlay .kb-btn {
    transform: translateY(0);
}

.kb-product-card__body {
    padding: 20px;
    text-align: center;
}

.kb-product-card__title {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 6px;
}

.kb-product-card__desc {
    font-size: 0.85rem;
    color: var(--kb-gray-500);
    line-height: 1.5;
}

/* ==========================================================================
   8. Core Advantages
   ========================================================================== */
.kb-advantages {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.kb-advantage {
    text-align: center;
    padding: 40px 20px;
    border-radius: var(--kb-radius-lg);
    background: var(--kb-white);
    transition: all var(--kb-transition);
    border: 1px solid var(--kb-gray-100);
}

.kb-advantage:hover {
    border-color: var(--kb-accent);
    transform: translateY(-5px);
    box-shadow: var(--kb-shadow);
}

.kb-advantage__icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--kb-primary) 0%, var(--kb-accent) 100%);
    color: var(--kb-white);
    font-size: 2rem;
}

.kb-advantage__number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--kb-primary);
    line-height: 1;
    margin-bottom: 8px;
}

.kb-advantage__title {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--kb-gray-800);
}

.kb-advantage__desc {
    font-size: 0.9rem;
    color: var(--kb-gray-500);
}

/* ==========================================================================
   9. Applications / Cases Section
   ========================================================================== */
.kb-applications {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.kb-application-card {
    position: relative;
    border-radius: var(--kb-radius-lg);
    overflow: hidden;
    height: 320px;
    cursor: pointer;
}

.kb-application-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.kb-application-card:hover img {
    transform: scale(1.1);
}

.kb-application-card__overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 25px;
    background: linear-gradient(to top, rgba(6,42,86,0.95) 0%, transparent 100%);
    color: var(--kb-white);
}

.kb-application-card__title {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.kb-application-card__desc {
    font-size: 0.85rem;
    opacity: 0.8;
}

/* ==========================================================================
   10. News Section
   ========================================================================== */
.kb-news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.kb-news-card {
    background: var(--kb-white);
    border-radius: var(--kb-radius-lg);
    overflow: hidden;
    box-shadow: var(--kb-shadow-sm);
    transition: all var(--kb-transition);
}

.kb-news-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--kb-shadow-lg);
}

.kb-news-card__image {
    height: 200px;
    overflow: hidden;
    background: var(--kb-gray-100);
}

.kb-news-card__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.kb-news-card:hover .kb-news-card__image img {
    transform: scale(1.08);
}

.kb-news-card__body {
    padding: 25px;
}

.kb-news-card__date {
    font-size: 0.8rem;
    color: var(--kb-accent);
    font-weight: 600;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.kb-news-card__title {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 10px;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.kb-news-card__title a {
    color: var(--kb-gray-800);
}

.kb-news-card__title a:hover {
    color: var(--kb-primary);
}

.kb-news-card__excerpt {
    font-size: 0.9rem;
    color: var(--kb-gray-500);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ==========================================================================
   11. Footer
   ========================================================================== */
.kb-footer {
    background: var(--kb-gray-900);
    color: rgba(255,255,255,0.7);
    padding: 60px 0 0;
}

.kb-footer__grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 40px;
    padding-bottom: 50px;
}

.kb-footer__about h4,
.kb-footer__links h4,
.kb-footer__contact h4 {
    color: var(--kb-white);
    font-size: 1.1rem;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 12px;
}

.kb-footer__about h4::after,
.kb-footer__links h4::after,
.kb-footer__contact h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 3px;
    background: var(--kb-accent);
    border-radius: 2px;
}

.kb-footer__about p {
    font-size: 0.9rem;
    line-height: 1.8;
    margin-bottom: 15px;
}

.kb-footer__links ul li {
    margin-bottom: 10px;
}

.kb-footer__links ul li a {
    color: rgba(255,255,255,0.6);
    font-size: 0.9rem;
    transition: all var(--kb-transition);
}

.kb-footer__links ul li a:hover {
    color: var(--kb-accent);
    padding-left: 5px;
}

.kb-footer__contact p {
    font-size: 0.9rem;
    margin-bottom: 12px;
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.kb-footer__contact .icon {
    color: var(--kb-accent);
    flex-shrink: 0;
    margin-top: 2px;
}

.kb-footer__bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding: 20px 0;
    text-align: center;
    font-size: 0.85rem;
}

.kb-footer__bottom a {
    color: var(--kb-accent);
}

/* ==========================================================================
   12. Breadcrumb
   ========================================================================== */
.kb-breadcrumb {
    background: var(--kb-gray-100);
    padding: 20px 0;
    margin-top: 80px;
}

.kb-breadcrumb ul {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
}

.kb-breadcrumb ul li {
    color: var(--kb-gray-500);
}

.kb-breadcrumb ul li a {
    color: var(--kb-gray-600);
}

.kb-breadcrumb ul li a:hover {
    color: var(--kb-primary);
}

.kb-breadcrumb ul li::after {
    content: '/';
    margin-left: 8px;
    color: var(--kb-gray-300);
}

.kb-breadcrumb ul li:last-child::after {
    content: '';
}

.kb-breadcrumb ul li:last-child {
    color: var(--kb-primary);
    font-weight: 600;
}

/* ==========================================================================
   13. Page Layout (sidebar + content)
   ========================================================================== */
.kb-page-layout {
    display: grid;
    grid-template-columns: 1fr 280px;
    gap: 40px;
    padding: 60px 0;
}

.kb-page-layout--full {
    grid-template-columns: 1fr;
}

.kb-sidebar {
    position: sticky;
    top: 100px;
}

.kb-widget {
    background: var(--kb-white);
    border: 1px solid var(--kb-gray-100);
    border-radius: var(--kb-radius);
    padding: 25px;
    margin-bottom: 25px;
}

.kb-widget__title {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 18px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--kb-gray-100);
    color: var(--kb-gray-800);
}

/* Category filter */
.kb-cat-filter li {
    margin-bottom: 8px;
}

.kb-cat-filter li a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 14px;
    border-radius: var(--kb-radius);
    color: var(--kb-gray-600);
    font-size: 0.9rem;
    transition: all var(--kb-transition);
}

.kb-cat-filter li a:hover,
.kb-cat-filter li.current-cat a {
    background: var(--kb-primary);
    color: var(--kb-white);
}

.kb-cat-filter li a .count {
    background: rgba(0,0,0,0.06);
    padding: 2px 8px;
    border-radius: 10px;
    font-size: 0.75rem;
}

.kb-cat-filter li a:hover .count,
.kb-cat-filter li.current-cat a .count {
    background: rgba(255,255,255,0.2);
}

/* ==========================================================================
   14. Product Detail Page
   ========================================================================== */
.kb-product-detail {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    padding: 40px 0;
}

.kb-product-gallery__main {
    border-radius: var(--kb-radius-lg);
    overflow: hidden;
    box-shadow: var(--kb-shadow);
    margin-bottom: 15px;
    aspect-ratio: 4/3;
    background: var(--kb-gray-100);
}

.kb-product-gallery__main img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.kb-product-gallery__thumbs {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
}

.kb-product-gallery__thumb {
    border-radius: var(--kb-radius);
    overflow: hidden;
    cursor: pointer;
    border: 2px solid transparent;
    transition: border-color var(--kb-transition);
    aspect-ratio: 1;
    background: var(--kb-gray-100);
}

.kb-product-gallery__thumb.active,
.kb-product-gallery__thumb:hover {
    border-color: var(--kb-accent);
}

.kb-product-gallery__thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.kb-product-info__title {
    font-size: 1.8rem;
    margin-bottom: 12px;
}

.kb-product-info__desc {
    color: var(--kb-gray-600);
    margin-bottom: 25px;
    line-height: 1.8;
}

.kb-spec-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 25px;
}

.kb-spec-table th,
.kb-spec-table td {
    padding: 12px 16px;
    border: 1px solid var(--kb-gray-200);
    font-size: 0.9rem;
}

.kb-spec-table th {
    background: var(--kb-gray-50);
    font-weight: 600;
    color: var(--kb-gray-700);
    width: 35%;
}

.kb-spec-table td {
    color: var(--kb-gray-600);
}

.kb-table-wrap {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.kb-table-wrap .kb-spec-table {
    min-width: 480px;
}

.kb-download-list {
    margin-bottom: 25px;
}

.kb-download-list a {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border: 1px solid var(--kb-gray-200);
    border-radius: var(--kb-radius);
    font-size: 0.9rem;
    color: var(--kb-gray-600);
    transition: all var(--kb-transition);
    margin-right: 10px;
    margin-bottom: 10px;
}

.kb-download-list a:hover {
    border-color: var(--kb-accent);
    color: var(--kb-accent);
    background: rgba(0,176,255,0.05);
}

/* ==========================================================================
   15. Inquiry Form
   ========================================================================== */
.kb-inquiry-form {
    background: var(--kb-white);
    border-radius: var(--kb-radius-lg);
    padding: 40px;
    box-shadow: var(--kb-shadow);
}

.kb-inquiry-form h2,
.kb-inquiry-form h3 {
    font-size: 1.5rem;
    margin-bottom: 25px;
}

.kb-form-group {
    margin-bottom: 20px;
}

.kb-form-group label {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--kb-gray-700);
}

.kb-form-group label .required {
    color: var(--kb-error);
}

.kb-form-group input[type="text"],
.kb-form-group input[type="email"],
.kb-form-group input[type="tel"],
.kb-form-group textarea,
.kb-form-group select {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--kb-gray-300);
    border-radius: var(--kb-radius);
    font-size: 0.95rem;
    font-family: var(--kb-font-sans);
    transition: border-color var(--kb-transition);
    background: var(--kb-white);
}

.kb-form-group input:focus,
.kb-form-group textarea:focus,
.kb-form-group select:focus {
    border-color: var(--kb-accent);
    box-shadow: 0 0 0 3px rgba(0,132,214,0.12);
}

.kb-form-group input:focus-visible,
.kb-form-group textarea:focus-visible,
.kb-form-group select:focus-visible {
    outline: 2px solid var(--kb-accent);
    outline-offset: 1px;
}

.kb-form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.kb-form-group input[type="file"] {
    width: 100%;
    padding: 10px;
    border: 1px dashed var(--kb-gray-300);
    border-radius: var(--kb-radius);
    background: var(--kb-gray-50);
    font-size: 0.9rem;
}

.kb-form-message {
    padding: 15px 20px;
    border-radius: var(--kb-radius);
    margin-bottom: 20px;
    font-size: 0.9rem;
}

.kb-form-message--success {
    background: rgba(34,197,94,0.1);
    color: #15803d;
    border: 1px solid rgba(34,197,94,0.3);
}

.kb-form-message--error {
    background: rgba(239,68,68,0.1);
    color: #b91c1c;
    border: 1px solid rgba(239,68,68,0.3);
}

/* ==========================================================================
   16. About Page
   ========================================================================== */
.kb-about-hero {
    position: relative;
    height: 400px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 80px;
}

.kb-about-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(6,42,86,0.88) 0%, rgba(10,61,124,0.7) 100%);
    z-index: 1;
}

.kb-about-hero img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 0;
}

.kb-about-hero__content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: var(--kb-white);
}

.kb-about-hero__title {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.kb-about-content {
    padding: 80px 0;
}

.kb-about-content__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.kb-about-content__image {
    border-radius: var(--kb-radius-lg);
    overflow: hidden;
    box-shadow: var(--kb-shadow-lg);
}

.kb-about-content__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.kb-about-content__text h2 {
    margin-bottom: 20px;
}

.kb-about-content__text p {
    margin-bottom: 15px;
    line-height: 1.9;
}

/* Timeline / Process */
.kb-process {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
    margin-top: 40px;
}

.kb-process__step {
    text-align: center;
    padding: 30px 20px;
    border-radius: var(--kb-radius);
    background: var(--kb-gray-50);
    position: relative;
}

.kb-process__num {
    width: 50px;
    height: 50px;
    margin: 0 auto 15px;
    background: var(--kb-primary);
    color: var(--kb-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    font-weight: 700;
}

.kb-process__title {
    font-weight: 700;
    margin-bottom: 8px;
    font-size: 1rem;
}

.kb-process__desc {
    font-size: 0.85rem;
    color: var(--kb-gray-500);
}

/* ==========================================================================
   17. Pagination
   ========================================================================== */
.kb-pagination {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 50px;
}

.kb-pagination a,
.kb-pagination span {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 42px;
    height: 42px;
    padding: 0 12px;
    border-radius: var(--kb-radius);
    border: 1px solid var(--kb-gray-200);
    font-size: 0.9rem;
    color: var(--kb-gray-600);
    transition: all var(--kb-transition);
}

.kb-pagination a:hover,
.kb-pagination .current {
    background: var(--kb-primary);
    color: var(--kb-white);
    border-color: var(--kb-primary);
}

/* ==========================================================================
   18. 404 Page
   ========================================================================== */
.kb-404 {
    min-height: 60vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 80px 20px;
}

.kb-404__code {
    font-size: 8rem;
    font-weight: 800;
    color: var(--kb-primary);
    line-height: 1;
}

.kb-404__title {
    font-size: 1.5rem;
    margin: 20px 0 10px;
}

.kb-404__desc {
    color: var(--kb-gray-500);
    margin-bottom: 30px;
}

/* ==========================================================================
   19. WordPress Core Alignments
   ========================================================================== */
.alignleft { float: left; margin: 0 20px 20px 0; }
.alignright { float: right; margin: 0 0 20px 20px; }
.aligncenter { display: block; margin: 0 auto; }

.wp-caption {
    max-width: 100%;
}

.wp-caption-text {
    font-size: 0.85rem;
    color: var(--kb-gray-500);
    text-align: center;
    margin-top: 8px;
}

.screen-reader-text {
    border: 0;
    clip: rect(1px,1px,1px,1px);
    clip-path: inset(50%);
    height: 1px;
    margin: -1px;
    overflow: hidden;
    padding: 0;
    position: absolute;
    width: 1px;
    word-wrap: normal !important;
}

/* ==========================================================================
   20. Block Editor (Gutenberg) Support
   ========================================================================== */
.wp-block-button .wp-block-button__link {
    border-radius: var(--kb-radius);
}

.alignwide {
    max-width: 100%;
}

.alignfull {
    max-width: none;
    width: 100%;
}

.has-large-font-size {
    line-height: 1.4;
}

/* ==========================================================================
   21. Dynamic Component Styles (formerly injected via JS)
   ========================================================================== */
.kb-header--scrolled {
    height: 65px;
    box-shadow: 0 2px 20px rgba(0,0,0,0.1);
}

.kb-header--scrolled .kb-header__inner {
    height: 65px;
}

.kb-header--scrolled .kb-header__logo img {
    max-height: 42px;
}

.kb-header--scrolled .kb-nav__menu > li > a {
    padding: 22px 18px;
}

.kb-header--scrolled .kb-nav__menu .sub-menu {
    top: 65px;
}

.kb-back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--kb-primary);
    color: var(--kb-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    border: none;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all 0.3s ease;
    z-index: 999;
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

.kb-back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.kb-back-to-top:hover {
    background: var(--kb-primary-dark);
    transform: translateY(-3px);
}

.kb-back-to-top .dashicons {
    font-size: 1.5rem;
    width: 1.5rem;
    height: 1.5rem;
}

body.kb-menu-open {
    overflow: hidden;
}

/* Popular posts widget */
.kb-popular-posts__item {
    display: flex;
    gap: 12px;
    margin-bottom: 15px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--kb-gray-100);
}

.kb-popular-posts__item:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.kb-popular-posts__thumb img {
    width: 60px;
    height: 60px;
    border-radius: 6px;
    object-fit: cover;
}

.kb-popular-posts__title {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--kb-gray-700);
    line-height: 1.4;
    display: block;
    margin-bottom: 4px;
}

.kb-popular-posts__date {
    font-size: 0.75rem;
    color: var(--kb-gray-500);
}

/* 404 — clear fixed header (80px desktop / 65px mobile) */
.kb-404 {
    padding-top: 160px;
    padding-bottom: 100px;
}