/* ============================================
   KING STAR COMMUNICATION - Global Stylesheet
   Industrial Display Solutions | B2B Platform
   ============================================ */

/* --- CSS Variables / Brand System --- */
:root {
  --primary: #1a237e;
  --primary-dark: #0d1642;
  --primary-light: #3949ab;
  --accent: #ff6d00;
  --accent-hover: #f57c00;
  --bg-white: #ffffff;
  --bg-gray: #f5f5f5;
  --bg-light: #fafafa;
  --text-dark: #212121;
  --text-medium: #424242;
  --text-light: #757575;
  --border-color: #e0e0e0;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.12);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.16);
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --transition: all 0.3s ease-in-out;
  --max-width: 1280px;
  --header-height: 72px;
  --banner-height: 52px;

/* --- Reset & Base --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; -webkit-font-smoothing: antialiased; }
body {
  font-family: 'Inter', 'Roboto', -apple-system, BlinkMacSystemFont, sans-serif;
  font-weight: 400; line-height: 1.6; color: var(--text-dark);
  background: var(--bg-white); overflow-x: hidden;
}
a { text-decoration: none; color: inherit; transition: var(--transition); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5, h6 { font-weight: 600; line-height: 1.3; color: var(--text-dark); }
h1 { font-size: 2.5rem; } h2 { font-size: 2rem; } h3 { font-size: 1.5rem; } h4 { font-size: 1.25rem; }

/* --- Utility Classes --- */
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
.section { padding: 80px 0; }
.section--gray { background: var(--bg-gray); }
.text-center { text-align: center; }
.text-primary { color: var(--primary); }
.text-accent { color: var(--accent); }
.text-light { color: var(--text-light); }
.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.grid { display: grid; }
.gap-20 { gap: 20px; } .gap-30 { gap: 30px; } .gap-40 { gap: 40px; }

/* --- Buttons --- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 32px; border-radius: var(--radius-sm);
  font-weight: 600; font-size: 0.95rem; letter-spacing: 0.02em;
  cursor: pointer; border: 2px solid transparent;
  transition: var(--transition); white-space: nowrap;
}
.btn--primary { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn--primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); transform: translateY(-1px); box-shadow: var(--shadow-md); }
.btn--outline { background: transparent; color: var(--primary); border-color: var(--primary); }
.btn--outline:hover { background: var(--primary); color: #fff; }
.btn--white { background: #fff; color: var(--primary); border-color: #fff; }
.btn--white:hover { background: var(--bg-light); transform: translateY(-1px); }
.btn--sm { padding: 10px 24px; font-size: 0.875rem; }
.btn--block { width: 100%; justify-content: center; }

/* ============================================
   COMPANY LEGAL NAME BANNER
   (Bank-grade full legal name display)
   ============================================ */
.company-name-banner {
  background: var(--primary-dark);
  color: #fff; text-align: center; padding: 10px 24px;
  font-size: 0.82rem; letter-spacing: 1px; font-weight: 500;
  border-bottom: 1px solid rgba(255,255,255,0.08); line-height: 1.5;
}
.company-name-banner .legal-name {
  font-weight: 700; font-size: 0.95rem; letter-spacing: 2px;
}
.company-name-banner .legal-sub {
  opacity: 0.7; font-size: 0.78rem; margin-top: 2px;
}

/* ============================================
   HEADER & NAVIGATION
   ============================================ */
.header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(255,255,255,0.97); backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  height: var(--header-height);
}
.header__inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 100%; max-width: var(--max-width); margin: 0 auto; padding: 0 24px;
}
.logo {
  display: flex; align-items: center; gap: 12px; flex-shrink: 0;
}
.logo__icon {
  width: 42px; height: 42px; background: var(--primary);
  border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center;
  color: #fff; font-weight: 700; font-size: 1.1rem;
}
.logo__text { font-weight: 700; font-size: 1.1rem; color: var(--primary); line-height: 1.2; }
.logo__text small { display: block; font-size: 0.7rem; color: var(--text-light); font-weight: 400; }

.nav { display: flex; align-items: center; gap: 32px; }
.nav__link { font-weight: 500; font-size: 0.95rem; color: var(--text-medium); position: relative; }
.nav__link::after { content:''; position:absolute; bottom:-4px; left:0; width:0; height:2px; background:var(--accent); transition:var(--transition); }
.nav__link:hover, .nav__link.active { color: var(--primary); }
.nav__link:hover::after, .nav__link.active::after { width: 100%; }

.header__actions { display: flex; align-items: center; gap: 16px; }

/* Language Switcher - Enhanced (more visible) */
.lang-switch {
  position: relative; display: flex; align-items: center; gap: 6px;
  padding: 8px 18px; border: 2px solid var(--primary);
  border-radius: var(--radius-md); cursor: pointer;
  font-size: 0.88rem; font-weight: 600; color: var(--primary);
  transition: var(--transition); background: #fff;
  box-shadow: var(--shadow-sm);
}
.lang-switch:hover { background: var(--primary); color: #fff; }
.lang-switch:hover select { color: #fff; }
.lang-switch select {
  appearance: none; border: none; background: transparent;
  font: inherit; font-weight: 600; cursor: pointer; padding-right: 0;
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none; flex-direction: column; gap: 5px; cursor: pointer;
  padding: 8px; background: none; border: none;
}
.menu-toggle span { width: 24px; height: 2px; background: var(--text-dark); transition: var(--transition); border-radius: 2px; }

/* Mega Menu Dropdown */
.nav__item { position: relative; }
.mega-menu {
  position: absolute; top: 100%; left: 50%; transform: translateX(-50%);
  min-width: 600px; background: #fff; border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg); opacity: 0; visibility: hidden;
  transition: var(--transition); padding: 24px; margin-top: 16px;
  border: 1px solid var(--border-color);
}
.nav__item:hover .mega-menu { opacity: 1; visibility: visible; }
.mega-menu__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.mega-menu__category h4 { font-size: 0.9rem; color: var(--primary); margin-bottom: 12px; text-transform: uppercase; letter-spacing: 0.05em; }
.mega-menu__category a { display: block; padding: 6px 0; font-size: 0.9rem; color: var(--text-medium); }
.mega-menu__category a:hover { color: var(--accent); }

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
  position: relative; min-height: 85vh; display: flex; align-items: center;
  margin-top: calc(var(--header-height) + var(--banner-height)); overflow: hidden;
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, var(--primary-light) 100%);
}
.hero__bg {
  position: absolute; inset: 0; z-index: 0;
  background: url('../website-photos/公司网站照片/1 公司介绍/0 工厂.png') center/cover no-repeat;
  opacity: 0.15; mix-blend-mode: overlay;
}
.hero__inner {
  position: relative; z-index: 1;
  max-width: var(--max-width); margin: 0 auto; padding: 80px 24px;
  display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center;
}
.hero__content { color: #fff; }
.hero__badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 18px; background: rgba(255,109,0,0.2);
  border: 1px solid rgba(255,109,0,0.4); border-radius: 50px;
  font-size: 0.85rem; color: var(--accent); margin-bottom: 24px;
  font-weight: 500; backdrop-filter: blur(4px);
}
.hero__title { font-size: 3.2rem; font-weight: 700; line-height: 1.15; margin-bottom: 20px; color: #fff; }
.hero__title span { color: var(--accent); }
.hero__subtitle { font-size: 1.15rem; opacity: 0.88; margin-bottom: 36px; max-width: 520px; line-height: 1.7; }
.hero__stats { display: flex; gap: 48px; margin-bottom: 40px; }
.hero__stat { text-align: center; }
.hero__stat-num { font-size: 2.2rem; font-weight: 700; color: var(--accent); }
.hero__stat-label { font-size: 0.85rem; opacity: 0.75; margin-top: 4px; }
.hero__actions { display: flex; gap: 16px; flex-wrap: wrap; }

/* Hero Image Gallery */
.hero__visual { position: relative; }
.hero__image-frame {
  position: relative; border-radius: var(--radius-lg); overflow: hidden;
  box-shadow: 0 25px 60px rgba(0,0,0,0.35); aspect-ratio: 4/3;
  background: var(--bg-gray);
}
.hero__image-frame img { width: 100%; height: 100%; object-fit: cover; }
.hero__floating-card {
  position: absolute; bottom: -20px; right: -20px;
  background: #fff; border-radius: var(--radius-md); padding: 20px 28px;
  box-shadow: var(--shadow-lg); display: flex; align-items: center; gap: 16px;
}
.hero__floating-icon { width: 48px; height: 48px; background: rgba(26,35,126,0.08); border-radius: var(--radius-md); display: flex; align-items: center; justify-content: center; font-size: 1.5rem; }
.hero__floating-text strong { display: block; font-size: 1.1rem; color: var(--text-dark); }
.hero__floating-text small { color: var(--text-light); font-size: 0.82rem; }

/* ============================================
   SECTION TITLES
   ============================================ */
.section-header { text-align: center; margin-bottom: 56px; }
.section-header__label {
  display: inline-block; font-size: 0.8rem; font-weight: 600;
  color: var(--accent); text-transform: uppercase; letter-spacing: 0.12em;
  margin-bottom: 12px; padding: 6px 16px; background: rgba(255,109,0,0.06);
  border-radius: 50px;
}
.section-header h2 { margin-bottom: 16px; }
.section-header p { color: var(--text-light); max-width: 600px; margin: 0 auto; font-size: 1.05rem; }

/* ============================================
   PRODUCT CATEGORIES GRID
   ============================================ */
.categories-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px;
}
.category-card {
  position: relative; border-radius: var(--radius-lg); overflow: hidden;
  background: var(--bg-white); border: 1px solid var(--border-color);
  transition: var(--transition); cursor: pointer; group: true;
}
.category-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: var(--primary-light); }
.category-card__image {
  aspect-ratio: 16/10; overflow: hidden; background: var(--bg-gray);
}
.category-card__image img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
.category-card:hover .category-card__image img { transform: scale(1.05); }
.category-card__body { padding: 24px; }
.category-card__body h3 { font-size: 1.15rem; margin-bottom: 8px; }
.category-card__body p { color: var(--text-light); font-size: 0.9rem; }
.category-card__count {
  display: inline-block; margin-top: 12px; padding: 4px 14px;
  background: var(--bg-gray); border-radius: 50px; font-size: 0.8rem; color: var(--text-light);
}

/* ============================================
   HOT PRODUCTS GRID
   ============================================ */
.products-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
}
.product-card {
  background: var(--bg-white); border: 1px solid var(--border-color);
  border-radius: var(--radius-md); overflow: hidden;
  transition: var(--transition);
}
.product-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
.product-card__image {
  position: relative; aspect-ratio: 1; overflow: hidden; background: var(--bg-gray);
  cursor: pointer;
}
.product-card__image img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
.product-card:hover .product-card__image img { transform: scale(1.05); }
.product-card__badge {
  position: absolute; top: 12px; left: 12px;
  padding: 4px 12px; background: var(--accent); color: #fff;
  border-radius: 50px; font-size: 0.72rem; font-weight: 600; text-transform: uppercase;
}
.product-card__quick-view {
  position: absolute; inset: 0; background: rgba(26,35,126,0.7);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; transition: var(--transition);
}
.product-card:hover .product-card__quick-view { opacity: 1; }
.product-card__quick-view button {
  padding: 10px 24px; background: #fff; color: var(--primary);
  border: none; border-radius: var(--radius-sm); font-weight: 600;
  font-size: 0.85rem; cursor: pointer; transition: var(--transition);
}
.product-card__quick-view button:hover { background: var(--accent); color: #fff; }
.product-card__body { padding: 18px; }
.product-card__model { font-size: 0.78rem; color: var(--text-light); text-transform: uppercase; letter-spacing: 0.04em; margin-bottom: 6px; }
.product-card__name { font-size: 1rem; font-weight: 600; margin-bottom: 10px; line-height: 1.3; }
.product-card__specs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 14px; }
.spec-tag {
  padding: 3px 10px; background: var(--bg-gray); border-radius: 4px;
  font-size: 0.76rem; color: var(--text-medium);
}
.product-card__price { display: flex; align-items: baseline; gap: 8px; margin-bottom: 14px; }
.product-card__price-num { font-size: 1.3rem; font-weight: 700; color: var(--accent); }
.product-card__price-unit { font-size: 0.82rem; color: var(--text-light); }
.product-card__moq { font-size: 0.78rem; color: var(--text-light); margin-bottom: 14px; }
.product-card__action { width: 100%; }

/* ============================================
   CERTIFICATIONS SECTION
   ============================================ */
.certifications { display: flex; justify-content: center; gap: 48px; flex-wrap: wrap; }
.cert-item { text-align: center; width: 140px; }
.cert-item__icon {
  width: 90px; height: 90px; margin: 0 auto 14px;
  background: var(--bg-white); border: 2px solid var(--border-color);
  border-radius: 50%; display: flex; align-items: center; justify-content: center;
  font-size: 2rem; font-weight: 700; color: var(--primary);
  transition: var(--transition);
}
.cert-item:hover .cert-item__icon { border-color: var(--accent); color: var(--accent); transform: scale(1.08); }
.cert-item__name { font-size: 0.88rem; font-weight: 600; color: var(--text-dark); }

/* ============================================
   PROCESS STEPS
   ============================================ */
.process-steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; position: relative; }
.process-step { text-align: center; position: relative; }
.process-step__number {
  width: 64px; height: 64px; margin: 0 auto 20px;
  background: var(--primary); color: #fff; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem; font-weight: 700;
  position: relative; z-index: 1;
}
.process-step__title { font-size: 1.1rem; font-weight: 600; margin-bottom: 8px; }
.process-step__desc { font-size: 0.88rem; color: var(--text-light); line-height: 1.6; }
/* Connector lines between steps */
.process-steps::before {
  content: ''; position: absolute; top: 32px; left: 15%;
  right: 15%; height: 2px; background: linear-gradient(to right, var(--primary), var(--accent));
  z-index: 0;
}

/* ============================================
   SHIPPING & PAYMENT INFO BAR
   ============================================ */
.info-bar { background: var(--bg-gray); border-top: 1px solid var(--border-color); border-bottom: 1px solid var(--border-color); }
.info-bar__grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.info-bar__item { display: flex; align-items: center; gap: 14px; padding: 24px 0; }
.info-bar__icon { width: 44px; height: 44px; background: var(--primary); color: #fff; border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center; font-size: 1.2rem; flex-shrink: 0; }
.info-bar__text h4 { font-size: 0.92rem; margin-bottom: 2px; }
.info-bar__text p { font-size: 0.8rem; color: var(--text-light); }

/* ============================================
   FOOTER
   ============================================ */
.footer { background: var(--primary-dark); color: #fff; padding: 64px 0 0; }
.footer__grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.5fr; gap: 48px; padding-bottom: 48px; border-bottom: 1px solid rgba(255,255,255,0.1); }
.footer__brand .logo__text { color: #fff; }
.footer__brand .logo__text small { color: rgba(255,255,255,0.5); }
.footer__brand p { color: rgba(255,255,255,0.65); margin-top: 16px; font-size: 0.92rem; line-height: 1.7; max-width: 340px; }
.footer__col h4 { font-size: 1rem; margin-bottom: 20px; color: #fff; }
.footer__col a { display: block; color: rgba(255,255,255,0.6); font-size: 0.9rem; padding: 5px 0; transition: var(--transition); }
.footer__col a:hover { color: var(--accent); padding-left: 4px; }
.footer__contact-item { display: flex; align-items: flex-start; gap: 10px; margin-bottom: 14px; color: rgba(255,255,255,0.7); font-size: 0.9rem; }
.footer__contact-icon { flex-shrink: 0; margin-top: 2px; }
.footer__social { display: flex; gap: 12px; margin-top: 20px; }
.footer__social a {
  width: 40px; height: 40px; background: rgba(255,255,255,0.08);
  border-radius: var(--radius-sm); display: flex; align-items: center;
  justify-content: center; color: #fff; font-size: 1.1rem; transition: var(--transition);
}
.footer__social a:hover { background: var(--accent); transform: translateY(-2px); }
.footer__bottom { padding: 24px 0; text-align: center; color: rgba(255,255,255,0.4); font-size: 0.82rem; }

/* WhatsApp Float Button */
.whatsapp-float {
  position: fixed; bottom: 28px; right: 28px; z-index: 999;
  width: 56px; height: 56px; background: #25D366; color: #fff;
  border-radius: 50%; display: flex; align-items: center; justify-content: center;
  font-size: 1.6rem; box-shadow: 0 4px 16px rgba(37,211,102,0.4);
  transition: var(--transition); cursor: pointer; text-decoration: none;
}
.whatsapp-float:hover { transform: scale(1.1); box-shadow: 0 6px 24px rgba(37,211,102,0.5); }

/* ============================================
   PRODUCT LIST PAGE
   ============================================ */
.page-hero {
  margin-top: calc(var(--header-height) + var(--banner-height)); padding: 56px 0 40px;
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  color: #fff; text-align: center;
}
.page-hero h1 { color: #fff; font-size: 2.4rem; margin-bottom: 12px; }
.page-hero p { opacity: 0.8; font-size: 1.05rem; }
.breadcrumb { display: flex; justify-content: center; gap: 8px; margin-bottom: 20px; font-size: 0.88rem; opacity: 0.7; }
.breadcrumb a:hover { opacity: 1; color: var(--accent); }

.products-layout { display: grid; grid-template-columns: 260px 1fr; gap: 40px; padding: 48px 0 80px; }

/* Sidebar Filter */
.filter-sidebar { position: sticky; top: calc(var(--header-height) + 24px); align-self: start; }
.filter-group { margin-bottom: 32px; }
.filter-group__title {
  font-size: 0.95rem; font-weight: 600; color: var(--text-dark);
  padding-bottom: 12px; margin-bottom: 16px; border-bottom: 2px solid var(--border-color);
}
.filter-option {
  display: flex; align-items: center; gap: 10px; padding: 8px 0;
  cursor: pointer; font-size: 0.9rem; color: var(--text-medium);
  transition: var(--transition);
}
.filter-option:hover { color: var(--primary); }
.filter-option input[type="checkbox"] {
  accent-color: var(--primary); width: 16px; height: 16px;
  cursor: pointer;
}
.filter-option input[type="radio"] { accent-color: var(--primary); width: 16px; height: 16px; cursor: pointer; }
.price-range input {
  width: 100%; padding: 10px; border: 1px solid var(--border-color);
  border-radius: var(--radius-sm); font-family: inherit; font-size: 0.88rem;
}

/* Products Toolbar */
.products-toolbar {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 28px; padding: 16px 20px;
  background: var(--bg-gray); border-radius: var(--radius-md);
}
.products-toolbar__left { display: flex; align-items: center; gap: 16px; font-size: 0.9rem; color: var(--text-light); }
.products-toolbar__right { display: flex; align-items: center; gap: 12px; }
.sort-select {
  padding: 8px 32px 8px 14px; border: 1px solid var(--border-color);
  border-radius: var(--radius-sm); font-family: inherit; font-size: 0.88rem;
  appearance: none; background: #fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23757575' d='M6 8L1 3h10z'/%3E%3C/svg%3E") no-repeat right 12px center; cursor: pointer;
}
.view-toggle { display: flex; gap: 4px; }
.view-btn {
  width: 36px; height: 36px; border: 1px solid var(--border-color);
  background: #fff; border-radius: var(--radius-sm); cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: var(--transition); font-size: 1rem; color: var(--text-light);
}
.view-btn.active { background: var(--primary); color: #fff; border-color: var(--primary); }

/* Pagination */
.pagination { display: flex; justify-content: center; align-items: center; gap: 8px; margin-top: 48px; }
.pagination__btn {
  width: 40px; height: 40px; display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--border-color); border-radius: var(--radius-sm);
  background: #fff; cursor: pointer; font-size: 0.9rem; color: var(--text-medium);
  transition: var(--transition); font-family: inherit;
}
.pagination__btn:hover, .pagination__btn.active { background: var(--primary); color: #fff; border-color: var(--primary); }
.pagination__btn.disabled { opacity: 0.4; cursor: not-allowed; }

/* ============================================
   PRODUCT DETAIL PAGE
   ============================================ */
.product-detail { padding: 48px 0 80px; }
.product-detail__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; }

/* Gallery */
.gallery-main { border-radius: var(--radius-lg); overflow: hidden; background: var(--bg-gray); aspect-ratio: 1; margin-bottom: 16px; }
.gallery-main img { width: 100%; height: 100%; object-fit: contain; cursor: zoom-in; }
.gallery-thumbs { display: flex; gap: 12px; }
.gallery-thumb {
  width: 80px; height: 80px; border-radius: var(--radius-sm); overflow: hidden;
  border: 2px solid transparent; cursor: pointer; transition: var(--transition);
  background: var(--bg-gray);
}
.gallery-thumb.active, .gallery-thumb:hover { border-color: var(--primary); }
.gallery-thumb img { width: 100%; height: 100%; object-fit: contain; }

/* Detail Info */
.detail-info {}
.detail-info__brand { font-size: 0.85rem; color: var(--text-light); text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 8px; }
.detail-info__title { font-size: 1.8rem; font-weight: 700; margin-bottom: 16px; }
.detail-info__rating { display: flex; align-items: center; gap: 8px; margin-bottom: 24px; }
.stars { color: #ffc107; letter-spacing: 2px; }
.detail-info__rating span { font-size: 0.88rem; color: var(--text-light); }

/* Price Table */
.price-table { margin: 28px 0; border: 1px solid var(--border-color); border-radius: var(--radius-md); overflow: hidden; }
.price-row { display: grid; grid-template-columns: 1fr 1fr 1fr; padding: 14px 20px; align-items: center; }
.price-row:nth-child(even) { background: var(--bg-gray); }
.price-row:first-child { background: var(--primary); color: #fff; font-weight: 600; font-size: 0.88rem; }
.price-row:not(:first-child) { font-size: 0.92rem; }
.price-row__qty { font-weight: 500; }
.price-row__price { color: var(--accent); font-weight: 700; font-size: 1.05rem; }
.price-note { font-size: 0.82rem; color: var(--text-light); padding: 12px 20px; background: rgba(255,109,0,0.04); border-left: 3px solid var(--accent); margin-top: 12px; }

/* Spec List */
.spec-list { margin: 28px 0; }
.spec-list__item {
  display: flex; padding: 12px 0; border-bottom: 1px dashed var(--border-color);
  font-size: 0.92rem;
}
.spec-list__label { width: 140px; flex-shrink: 0; color: var(--text-light); font-weight: 500; }
.spec-list__value { color: var(--text-dark); }

/* Inquiry Form on Detail Page */
.inquiry-form-section { background: var(--bg-gray); border-radius: var(--radius-lg); padding: 32px; margin-top: 32px; }
.inquiry-form-section h3 { margin-bottom: 20px; font-size: 1.2rem; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 16px; }
.form-field { display: flex; flex-direction: column; gap: 6px; }
.form-field label { font-size: 0.85rem; font-weight: 500; color: var(--text-medium); }
.form-field input, .form-field textarea, .form-field select {
  padding: 12px 16px; border: 1px solid var(--border-color); border-radius: var(--radius-sm);
  font-family: inherit; font-size: 0.92rem; transition: var(--transition);
  background: #fff; color: var(--text-dark);
}
.form-field input:focus, .form-field textarea:focus, .form-field select:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(26,35,126,0.08); }
.form-field textarea { resize: vertical; min-height: 100px; }
.form-field.full-width { grid-column: 1 / -1; }

/* Related Products */
.related-products { margin-top: 64px; padding-top: 48px; border-top: 1px solid var(--border-color); }
.related-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; margin-top: 32px; }

/* ============================================
   ABOUT PAGE
   ============================================ */
.about-intro { padding: 64px 0; }
.about-intro__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.about-text h2 { margin-bottom: 20px; }
.about-text > p { color: var(--text-light); margin-bottom: 16px; font-size: 1rem; line-height: 1.8; }
.about-highlights { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 32px; }
.about-highlight { display: flex; gap: 14px; align-items: flex-start; }
.about-highlight__icon { width: 46px; height: 46px; background: rgba(26,35,126,0.08); border-radius: var(--radius-md); display: flex; align-items: center; justify-content: center; font-size: 1.3rem; flex-shrink: 0; }
.about-highlight__text strong { display: block; font-size: 0.95rem; margin-bottom: 4px; }
.about-highlight__text span { font-size: 0.84rem; color: var(--text-light); }

.about-images { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; border-radius: var(--radius-lg); overflow: hidden; }
.about-image { border-radius: var(--radius-md); overflow: hidden; }
.about-image img { width: 100%; height: 240px; object-fit: cover; transition: var(--transition); }
.about-image:hover img { transform: scale(1.03); }
.about-image:first-child { grid-column: 1 / -1; }
.about-image:first-child img { height: 320px; }

/* Factory Photo Grid */
.factory-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.factory-img { border-radius: var(--radius-md); overflow: hidden; aspect-ratio: 4/3; }
.factory-img img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); cursor: pointer; }
.factory-img:hover img { transform: scale(1.06); }

/* QC Process */
.qc-process { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; }
.qc-step { text-align: center; }
.qc-step__image {
  border-radius: var(--radius-md); overflow: hidden; margin-bottom: 18px;
  aspect-ratio: 4/3; background: var(--bg-gray);
}
.qc-step__image img { width: 100%; height: 100%; object-fit: cover; }
.qc-step__num {
  width: 36px; height: 36px; margin: 0 auto 12px;
  background: var(--accent); color: #fff; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 0.95rem;
}
.qc-step__title { font-size: 1rem; font-weight: 600; margin-bottom: 8px; }
.qc-step__desc { font-size: 0.86rem; color: var(--text-light); line-height: 1.6; }

/* Market Distribution Map */
.market-map { text-align: center; }
.market-bars { max-width: 600px; margin: 32px auto 0; }
.market-bar { margin-bottom: 18px; }
.market-bar__header { display: flex; justify-content: space-between; margin-bottom: 6px; font-size: 0.9rem; }
.market-bar__track { height: 32px; background: var(--bg-gray); border-radius: 16px; overflow: hidden; }
.market-bar__fill { height: 100%; background: linear-gradient(90deg, var(--primary), var(--accent)); border-radius: 16px; display: flex; align-items: center; justify-content: flex-end; padding-right: 14px; color: #fff; font-weight: 600; font-size: 0.82rem; transition: width 1s ease-in-out; }

/* Contact Section */
.contact-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 48px; }
.contact-info { display: flex; flex-direction: column; gap: 24px; }
.contact-card {
  display: flex; gap: 16px; padding: 24px; background: var(--bg-gray);
  border-radius: var(--radius-md); border-left: 4px solid var(--primary);
}
.contact-card__icon { width: 48px; height: 48px; background: var(--primary); color: #fff; border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center; font-size: 1.2rem; flex-shrink: 0; }
.contact-card__text h4 { font-size: 1rem; margin-bottom: 4px; }
.contact-card__text p { font-size: 0.9rem; color: var(--text-light); }
.contact-card__text a { color: var(--primary); }

/* Lightbox */
.lightbox {
  display: none; position: fixed; inset: 0; z-index: 9999;
  background: rgba(0,0,0,0.9); align-items: center; justify-content: center;
  padding: 40px;
}
.lightbox.active { display: flex; }
.lightbox__img { max-width: 90vw; max-height: 90vh; border-radius: var(--radius-md); }
.lightbox__close {
  position: absolute; top: 24px; right: 24px; color: #fff; font-size: 2rem;
  cursor: pointer; background: none; border: none; width: 44px; height: 44px;
  display: flex; align-items: center; justify-content: center;
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 1024px) {
  .hero__inner { grid-template-columns: 1fr; text-align: center; padding: 60px 24px; }
  .hero__subtitle { margin: 0 auto 36px; }
  .hero__stats { justify-content: center; }
  .hero__actions { justify-content: center; }
  .hero__visual { display: none; }
  .categories-grid { grid-template-columns: repeat(2, 1fr); }
  .products-grid { grid-template-columns: repeat(3, 1fr); }
  .footer__grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .products-layout { grid-template-columns: 1fr; }
  .filter-sidebar { position: static; display: none; }
  .filter-sidebar.mobile-open { display: block; }
  .product-detail__grid { grid-template-columns: 1fr; }
  .about-intro__grid { grid-template-columns: 1fr; }
  .factory-grid { grid-template-columns: repeat(2, 1fr); }
  .process-steps { grid-template-columns: repeat(2, 1fr); }
  .process-steps::before { display: none; }
  .qc-process { grid-template-columns: repeat(2, 1fr); }
  .info-bar__grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  h1 { font-size: 2rem; } h2 { font-size: 1.6rem; }
  .section { padding: 56px 0; }
  .nav { display: none; position: absolute; top: var(--header-height); left: 0; right: 0; background: #fff; flex-direction: column; padding: 24px; box-shadow: var(--shadow-lg); border-top: 1px solid var(--border-color); }
  .nav.open { display: flex; }
  .menu-toggle { display: flex; }
  .mega-menu { position: static; transform: none; min-width: 100%; box-shadow: none; padding: 16px; margin-top: 12px; }
  .hero__title { font-size: 2.2rem; }
  .hero__stats { gap: 24px; flex-wrap: wrap; }
  .categories-grid { grid-template-columns: 1fr; }
  .products-grid { grid-template-columns: repeat(2, 1fr); }
  .footer__grid { grid-template-columns: 1fr; gap: 32px; }
  .form-grid { grid-template-columns: 1fr; }
  .about-highlights { grid-template-columns: 1fr; }
  .process-steps, .qc-process { grid-template-columns: 1fr; }
  .info-bar__grid { grid-template-columns: 1fr; }
  .related-grid { grid-template-columns: repeat(2, 1fr); }
  .price-row { grid-template-columns: 1fr; text-align: center; }
  .price-row__price { font-size: 1.2rem; }
  .certifications { gap: 24px; }
  .hero__floating-card { position: static; margin-top: 24px; }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .hero__title { font-size: 1.8rem; }
  .products-grid { grid-template-columns: 1fr; }
  .products-toolbar { flex-direction: column; gap: 12px; align-items: stretch; }
  .btn { padding: 12px 24px; font-size: 0.9rem; }
}

/* Print styles */
@media print {
  .header, .whatsapp-float, .footer { display: none !important; }
  body { margin-top: 0 !important; }
  .hero { min-height: auto; margin-top: 0 !important; }
}