/*
Theme Name: 柏驰企业主题
Theme URI: https://www.xjcheyou.cc
Description: 新疆柏驰石油科技发展有限公司 WordPress 主题，简约大气企业官网风格
Author: WorkBuddy
Author URI: https://www.xjcheyou.cc
Version: 1.0.0
Text Domain: baichi
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Tags: business, corporate, clean, modern, responsive
Requires at least: 5.0
Requires PHP: 7.4
*/

/* ===== CSS Reset & Variables ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --primary:       #0a2a5e;
  --primary-light: #1a4a9e;
  --accent:        #e8a020;
  --accent-light:  #f5c55a;
  --dark:          #111827;
  --gray-800:      #1f2937;
  --gray-600:      #4b5563;
  --gray-400:      #9ca3af;
  --gray-200:      #e5e7eb;
  --gray-100:      #f3f4f6;
  --white:         #ffffff;
  --font:          'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --shadow:        0 4px 24px rgba(0,0,0,.10);
  --shadow-lg:     0 12px 48px rgba(0,0,0,.14);
  --radius:        8px;
  --radius-lg:     16px;
  --transition:    .3s ease;
}

html { scroll-behavior: smooth; }
body { font-family: var(--font); color: var(--dark); background: var(--white); line-height: 1.7; }
img  { max-width: 100%; display: block; }
a    { text-decoration: none; color: inherit; }
ul   { list-style: none; }

/* ===== Utility ===== */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section    { padding: 100px 0; }
.section-sm { padding: 64px 0; }
.text-center { text-align: center; }
.flex { display: flex; }
.items-center { align-items: center; }
.grid   { display: grid; }

/* ===== Section Heading ===== */
.section-tag {
  display: inline-block;
  font-size: 13px; font-weight: 600; letter-spacing: 2px; text-transform: uppercase;
  color: var(--accent); background: rgba(232,160,32,.10);
  padding: 4px 14px; border-radius: 40px; margin-bottom: 14px;
}
.section-title {
  font-size: clamp(26px, 3vw, 40px); font-weight: 700; color: var(--primary);
  line-height: 1.25; margin-bottom: 18px;
}
.section-desc {
  font-size: 16px; color: var(--gray-600); max-width: 640px; line-height: 1.9;
}
.section-heading-center .section-desc { margin: 0 auto; }

/* ===== Buttons ===== */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 32px; border-radius: var(--radius);
  font-size: 15px; font-weight: 600; cursor: pointer; border: none;
  transition: var(--transition); white-space: nowrap;
}
.btn-primary { background: var(--accent); color: var(--primary); }
.btn-primary:hover { background: var(--accent-light); transform: translateY(-2px); box-shadow: 0 8px 20px rgba(232,160,32,.35); }
.btn-outline { background: transparent; color: var(--white); border: 2px solid rgba(255,255,255,.55); }
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }

/* ===== Navbar ===== */
#navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  padding: 0 24px; transition: background .35s, box-shadow .35s;
}
#navbar.scrolled {
  background: rgba(10,42,94,.97); backdrop-filter: blur(12px);
  box-shadow: 0 2px 20px rgba(0,0,0,.25);
}
.nav-inner {
  max-width: 1200px; margin: 0 auto; height: 72px;
  display: flex; align-items: center; justify-content: space-between;
}
.nav-logo { display: flex; align-items: center; }
.nav-logo img,
.nav-logo .custom-logo {
  height: 50px; width: auto; object-fit: contain;
  max-width: 180px;
  transition: var(--transition);
}
.nav-logo:hover img,
.nav-logo:hover .custom-logo {
  opacity: .85;
}
.nav-logo-text {
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  margin-left: 10px;
  white-space: nowrap;
  letter-spacing: 0.5px;
}
.nav-links { display: flex; gap: 4px; }
.nav-links a {
  color: rgba(255,255,255,.82); font-size: 14.5px; font-weight: 500;
  padding: 8px 16px; border-radius: 6px; transition: var(--transition);
}
.nav-links a:hover,
.nav-links a.active { color: var(--white); background: rgba(255,255,255,.12); }
.nav-cta { margin-left: 8px; padding: 10px 22px; font-size: 14px; }
.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 6px; }
.hamburger span { display: block; width: 24px; height: 2px; background: var(--white); border-radius: 2px; transition: var(--transition); }
.mobile-menu { display: none; flex-direction: column; background: rgba(10,42,94,.97); padding: 16px 24px 24px; }
.mobile-menu a { color: rgba(255,255,255,.85); padding: 12px 0; border-bottom: 1px solid rgba(255,255,255,.08); font-size: 15px; transition: var(--transition); }
.mobile-menu a:last-child { border-bottom: none; }
.mobile-menu a:hover { color: var(--accent); }
.mobile-menu.open { display: flex; }

/* ===== Breadcrumb ===== */
.breadcrumb {
  background: var(--gray-100);
  padding: 16px 0;
  border-bottom: 1px solid var(--gray-200);
  margin-top: 72px;
}
.breadcrumb .container {
  display: flex; align-items: center; gap: 12px;
  font-size: 14px; color: var(--gray-600);
}
.breadcrumb a {
  color: var(--gray-600);
  transition: var(--transition);
}
.breadcrumb a:hover {
  color: var(--primary);
}
.breadcrumb .separator {
  color: var(--gray-400);
}
.breadcrumb .current {
  color: var(--primary); font-weight: 500;
}


/* ===== Hero ===== */
#hero {
  min-height: 100vh; background: linear-gradient(135deg, var(--primary) 0%, #0d3b7a 55%, #1a5296 100%);
  display: flex; align-items: center; position: relative; overflow: hidden;
}
.hero-bg-pattern {
  position: absolute; inset: 0;
  background-image:
    radial-gradient(circle at 20% 50%, rgba(232,160,32,.08) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(255,255,255,.04) 0%, transparent 40%);
}
.hero-glow {
  position: absolute; width: 600px; height: 600px; border-radius: 50%;
  background: radial-gradient(circle, rgba(232,160,32,.12) 0%, transparent 70%);
  top: -200px; right: -150px; pointer-events: none;
}
.hero-content {
  position: relative; z-index: 1; max-width: 1200px; margin: 0 auto;
  padding: 0 24px; padding-top: 72px;
  display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(232,160,32,.15); border: 1px solid rgba(232,160,32,.3);
  color: var(--accent-light); font-size: 13px; font-weight: 500;
  padding: 6px 14px; border-radius: 40px; margin-bottom: 24px;
}
.hero-badge::before {
  content: ''; width: 8px; height: 8px; background: var(--accent);
  border-radius: 50%; animation: pulse 2s infinite;
}
@keyframes pulse { 0%,100% { opacity:1; transform:scale(1); } 50% { opacity:.5; transform:scale(1.3); } }
.hero-title {
  font-size: clamp(30px, 3.6vw, 52px); font-weight: 800; color: var(--white);
  line-height: 1.18; margin-bottom: 20px;
}
.hero-title em { font-style: normal; color: var(--accent); }
.hero-subtitle { font-size: 17px; color: rgba(255,255,255,.72); margin-bottom: 36px; line-height: 1.9; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-stats {
  display: flex; gap: 32px; margin-top: 52px; padding-top: 32px;
  border-top: 1px solid rgba(255,255,255,.12);
}
.hero-stat-value { font-size: 32px; font-weight: 800; color: var(--accent); line-height: 1; }
.hero-stat-label { font-size: 13px; color: rgba(255,255,255,.6); margin-top: 4px; }
.hero-visual { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.hero-card {
  background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.12);
  border-radius: var(--radius-lg); padding: 28px 22px;
  backdrop-filter: blur(10px); transition: var(--transition);
}
.hero-card:hover { background: rgba(255,255,255,.13); transform: translateY(-4px); }
.hero-card:first-child { grid-column: span 2; }
.hero-card-icon {
  width: 48px; height: 48px; background: var(--accent); border-radius: 12px;
  display: flex; align-items: center; justify-content: center; font-size: 22px;
  margin-bottom: 14px;
}
.hero-card-title { font-size: 15px; font-weight: 600; color: var(--white); margin-bottom: 6px; }
.hero-card-text { font-size: 13px; color: rgba(255,255,255,.6); }

/* ===== Features Strip ===== */
#features-strip { background: var(--gray-100); padding: 48px 0; }
.features-strip-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; }
.feature-strip-item {
  display: flex; align-items: center; gap: 16px; padding: 20px 28px; border-right: 1px solid var(--gray-200);
}
.feature-strip-item:last-child { border-right: none; }
.feature-strip-icon {
  width: 48px; height: 48px; flex-shrink: 0; background: var(--primary); border-radius: 12px;
  display: flex; align-items: center; justify-content: center; font-size: 22px; color: var(--white);
}
.feature-strip-title { font-size: 15px; font-weight: 600; color: var(--primary); }
.feature-strip-sub { font-size: 13px; color: var(--gray-600); }

/* ===== About ===== */
#about { background: var(--white); }
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 72px; align-items: center; }
.about-visual { position: relative; }
.about-main-img {
  border-radius: var(--radius-lg); overflow: hidden;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  height: 440px; display: flex; align-items: center; justify-content: center;
}
.about-img-inner { text-align: center; color: var(--white); }
.about-img-icon { font-size: 80px; margin-bottom: 16px; }
.about-img-label { font-size: 18px; font-weight: 600; opacity: .85; }
.about-badge-card {
  position: absolute; bottom: -24px; right: -24px; background: var(--white);
  border-radius: var(--radius-lg); padding: 20px 24px; box-shadow: var(--shadow-lg); min-width: 180px;
}
.about-badge-num { font-size: 36px; font-weight: 800; color: var(--primary); line-height: 1; }
.about-badge-num span { color: var(--accent); }
.about-badge-text { font-size: 13px; color: var(--gray-600); margin-top: 4px; }
.about-highlights { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 36px; }
.about-hl { display: flex; gap: 14px; align-items: flex-start; }
.about-hl-icon {
  width: 40px; height: 40px; flex-shrink: 0;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-radius: 10px; display: flex; align-items: center; justify-content: center;
  font-size: 18px; color: var(--white);
}
.about-hl-title { font-size: 14.5px; font-weight: 600; color: var(--primary); }
.about-hl-text  { font-size: 13px; color: var(--gray-600); margin-top: 2px; }

/* Timeline */
.timeline { margin-top: 48px; }
.timeline-title { font-size: 18px; font-weight: 700; color: var(--primary); margin-bottom: 24px; }
.timeline-item { display: flex; gap: 20px; padding-bottom: 28px; position: relative; }
.timeline-item::before {
  content: ''; position: absolute; left: 15px; top: 34px; bottom: 0;
  width: 2px; background: var(--gray-200);
}
.timeline-item:last-child::before { display: none; }
.timeline-dot {
  width: 32px; height: 32px; flex-shrink: 0; background: var(--primary);
  border-radius: 50%; display: flex; align-items: center; justify-content: center;
  color: var(--white); font-size: 12px; font-weight: 700; position: relative; z-index: 1;
}
.timeline-year { font-size: 13px; font-weight: 700; color: var(--accent); }
.timeline-text  { font-size: 14px; color: var(--gray-600); }

/* ===== Products ===== */
#products { background: var(--gray-100); }
.products-tabs { display: flex; gap: 8px; justify-content: center; margin-bottom: 48px; flex-wrap: wrap; }
.tab-btn {
  padding: 10px 22px; border-radius: 40px; font-size: 14.5px; font-weight: 500;
  cursor: pointer; border: 2px solid var(--gray-200); background: var(--white);
  color: var(--gray-600); transition: var(--transition);
}
.tab-btn:hover  { border-color: var(--primary-light); color: var(--primary-light); }
.tab-btn.active { background: var(--primary); color: var(--white); border-color: var(--primary); }
.products-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.product-card {
  background: var(--white); border-radius: var(--radius-lg); overflow: hidden;
  box-shadow: var(--shadow); transition: var(--transition); display: flex; flex-direction: column;
}
.product-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.product-card-img {
  height: 200px; display: flex; align-items: center; justify-content: center;
  font-size: 64px; position: relative; overflow: hidden;
}
.product-card-img img { width: 100%; height: 100%; object-fit: cover; }
.product-card-body { padding: 24px; flex: 1; }
.product-card-category {
  font-size: 12px; font-weight: 600; letter-spacing: 1px; text-transform: uppercase;
  color: var(--accent); margin-bottom: 8px;
}
.product-card-title { font-size: 17px; font-weight: 700; color: var(--primary); margin-bottom: 10px; }
.product-card-desc  { font-size: 14px; color: var(--gray-600); line-height: 1.8; }
.product-card-tags  { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 16px; }
.product-tag {
  background: var(--gray-100); color: var(--gray-600); font-size: 12px;
  padding: 3px 10px; border-radius: 40px;
}
.product-card-footer {
  padding: 16px 24px; border-top: 1px solid var(--gray-100);
  display: flex; align-items: center; justify-content: space-between;
}
.product-card-oem { font-size: 12px; font-weight: 600; color: var(--primary-light); }
.product-card-link {
  font-size: 13px; color: var(--primary); font-weight: 600; display: flex; align-items: center; gap: 4px; transition: var(--transition);
}
.product-card-link:hover { color: var(--accent); gap: 8px; }

/* OEM Banner */
.oem-banner {
  margin-top: 56px; background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  border-radius: var(--radius-lg); padding: 48px 56px;
  display: flex; align-items: center; justify-content: space-between; gap: 32px; flex-wrap: wrap;
}
.oem-banner-left h3 { font-size: 24px; font-weight: 700; color: var(--white); margin-bottom: 10px; }
.oem-banner-left p { font-size: 15px; color: rgba(255,255,255,.72); max-width: 520px; }

/* ===== Why Us ===== */
#why-us { background: var(--white); }
.why-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.why-card {
  border-radius: var(--radius-lg); padding: 36px 28px;
  border: 1px solid var(--gray-200); transition: var(--transition); position: relative; overflow: hidden;
}
.why-card::after {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transform: scaleX(0); transform-origin: left; transition: var(--transition);
}
.why-card:hover { border-color: transparent; box-shadow: var(--shadow-lg); transform: translateY(-4px); }
.why-card:hover::after { transform: scaleX(1); }
.why-icon {
  width: 60px; height: 60px; background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-radius: 16px; display: flex; align-items: center; justify-content: center;
  font-size: 26px; color: var(--white); margin-bottom: 20px;
}
.why-title { font-size: 17px; font-weight: 700; color: var(--primary); margin-bottom: 10px; }
.why-desc  { font-size: 14.5px; color: var(--gray-600); line-height: 1.85; }

/* ===== News ===== */
#news { background: var(--gray-100); }
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.news-card {
  background: var(--white); border-radius: var(--radius-lg); overflow: hidden;
  box-shadow: var(--shadow); transition: var(--transition);
}
.news-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.news-card-img {
  height: 200px; background: linear-gradient(135deg, #e8eff8, #d1dff0);
  display: flex; align-items: center; justify-content: center; font-size: 48px; overflow: hidden;
}
.news-card-img img { width: 100%; height: 100%; object-fit: cover; }
.news-card-body { padding: 24px; }
.news-card-date {
  font-size: 12px; color: var(--accent); font-weight: 600; margin-bottom: 10px;
}
.news-card-title { font-size: 17px; font-weight: 700; color: var(--primary); margin-bottom: 12px; line-height: 1.4; }
.news-card-excerpt { font-size: 14px; color: var(--gray-600); line-height: 1.7; margin-bottom: 16px; }
.news-card-link {
  font-size: 13px; color: var(--primary); font-weight: 600; display: inline-flex; align-items: center; gap: 4px; transition: var(--transition);
}
.news-card-link:hover { color: var(--accent); gap: 8px; }

/* ===== Contact ===== */
#contact { background: var(--white); }
.contact-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 56px; align-items: start; }
.contact-info-block { display: flex; flex-direction: column; gap: 24px; }
.contact-card {
  background: var(--white); border-radius: var(--radius-lg); padding: 28px 24px;
  display: flex; gap: 18px; align-items: flex-start; box-shadow: var(--shadow); transition: var(--transition);
}
.contact-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.contact-icon {
  width: 48px; height: 48px; flex-shrink: 0; background: var(--primary);
  border-radius: 12px; display: flex; align-items: center; justify-content: center;
  font-size: 20px; color: var(--white);
}
.contact-card-title { font-size: 14px; font-weight: 600; color: var(--gray-600); margin-bottom: 4px; }
.contact-card-value { font-size: 15.5px; font-weight: 600; color: var(--primary); }
.contact-form-wrap {
  background: var(--white); border-radius: var(--radius-lg); padding: 40px 36px;
  box-shadow: var(--shadow);
}
.contact-form-wrap h3 { font-size: 22px; font-weight: 700; color: var(--primary); margin-bottom: 6px; }
.contact-form-wrap p { font-size: 14px; color: var(--gray-600); margin-bottom: 28px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { margin-bottom: 16px; }
.form-label { display: block; font-size: 13.5px; font-weight: 600; color: var(--gray-800); margin-bottom: 7px; }
.form-control {
  width: 100%; padding: 12px 16px; border: 1.5px solid var(--gray-200);
  border-radius: var(--radius); font-size: 14.5px; font-family: var(--font);
  color: var(--dark); background: var(--white); transition: var(--transition);
  outline: none; resize: none;
}
.form-control:focus { border-color: var(--primary-light); box-shadow: 0 0 0 3px rgba(26,74,158,.1); }
.form-control::placeholder { color: var(--gray-400); }
select.form-control { cursor: pointer; }
.form-btn {
  width: 100%; background: var(--primary); color: var(--white);
  padding: 14px; border-radius: var(--radius);
  font-size: 15.5px; font-weight: 600; cursor: pointer; border: none;
  transition: var(--transition); display: flex; align-items: center; justify-content: center; gap: 8px;
  font-family: var(--font);
}
.form-btn:hover { background: var(--primary-light); transform: translateY(-2px); box-shadow: 0 8px 20px rgba(10,42,94,.25); }
.form-success {
  display: none; background: #ecfdf5; border: 1px solid #6ee7b7;
  border-radius: var(--radius); padding: 14px 18px; color: #065f46; font-size: 14px; margin-top: 12px; text-align: center;
}

/* ===== Footer ===== */
footer {
  background: var(--dark); color: rgba(255,255,255,.65); padding: 64px 0 0;
}
.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1.2fr; gap: 48px; padding-bottom: 48px;
}
.footer-brand p { font-size: 13.5px; line-height: 1.85; margin-top: 14px; }
.footer-logo {
  display: flex; align-items: center; gap: 14px; margin-bottom: 4px;
}
.footer-logo-img {
  height: 48px; width: auto; object-fit: contain; max-width: 140px; border-radius: 6px;
}
.footer-logo-text { color: var(--white); font-size: 15px; font-weight: 700; line-height: 1.35; }
.footer-co-name { font-size: 11.5px; color: rgba(255,255,255,.5); letter-spacing: .5px; }
.footer-heading {
  font-size: 14px; font-weight: 700; color: var(--white); margin-bottom: 18px;
  padding-bottom: 12px; border-bottom: 1px solid rgba(255,255,255,.1);
}
.footer-links { display: flex; flex-direction: column; gap: 10px; }
.footer-links a { font-size: 13.5px; transition: var(--transition); }
.footer-links a:hover { color: var(--accent); padding-left: 4px; }
.footer-contact-item {
  display: flex; gap: 10px; align-items: flex-start; font-size: 13.5px; margin-bottom: 12px;
}
.footer-contact-item .icon { font-size: 15px; margin-top: 1px; flex-shrink: 0; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08); padding: 20px 0;
  display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px;
}
.footer-bottom p { font-size: 13px; }
.footer-bottom-right { display: flex; gap: 20px; }
.footer-bottom-right a { font-size: 13px; transition: var(--transition); }
.footer-bottom-right a:hover { color: var(--accent); }

/* ===== Back to top ===== */
#back-top {
  position: fixed; bottom: 32px; right: 32px; width: 44px; height: 44px;
  background: var(--primary); color: var(--white); border-radius: 50%;
  display: flex; align-items: center; justify-content: center; font-size: 18px;
  box-shadow: 0 4px 16px rgba(10,42,94,.4); cursor: pointer;
  opacity: 0; pointer-events: none; transition: var(--transition); z-index: 500; border: none;
}
#back-top.visible { opacity: 1; pointer-events: auto; }
#back-top:hover { background: var(--primary-light); transform: translateY(-3px); }

/* ===== Page Title ===== */
.page-header {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  padding: 100px 0 80px; text-align: center;
}
.page-header h1 { font-size: clamp(28px, 3.5vw, 48px); font-weight: 800; color: var(--white); margin: 16px 0 10px; }
.page-header p { font-size: 16px; color: rgba(255,255,255,.7); max-width: 600px; margin: 0 auto; }

/* ===== Single Product/News ===== */
.single-content { max-width: 800px; margin: 0 auto; padding: 60px 24px; }
.single-content h1 { font-size: clamp(26px, 3vw, 36px); font-weight: 700; color: var(--primary); margin-bottom: 20px; }
.single-content .meta { font-size: 13px; color: var(--gray-600); margin-bottom: 32px; padding-bottom: 20px; border-bottom: 1px solid var(--gray-200); }
.single-content .content { font-size: 16px; line-height: 1.85; color: var(--gray-800); }
.single-content .content p { margin-bottom: 20px; }
.single-content .content h2 { font-size: 22px; font-weight: 700; color: var(--primary); margin: 32px 0 16px; }
.single-content .content img { border-radius: var(--radius); margin: 24px 0; }

/* ===== Pagination ===== */
.pagination { display: flex; gap: 8px; justify-content: center; margin-top: 48px; }
.pagination a,
.pagination .current {
  display: flex; align-items: center; justify-content: center;
  padding: 10px 16px; border-radius: var(--radius);
  font-size: 14px; font-weight: 600; transition: var(--transition);
}
.pagination a { background: var(--white); border: 1px solid var(--gray-200); color: var(--primary); }
.pagination a:hover { background: var(--primary-light); color: var(--white); }
.pagination .current { background: var(--primary); color: var(--white); }

/* ===== Admin ===== */
.baichi-admin .baichi-tabs {
  background: var(--white); border-radius: var(--radius-lg); padding: 24px;
  box-shadow: var(--shadow); margin-top: 20px;
}
.baichi-tab-nav { display: flex; gap: 4px; border-bottom: 2px solid var(--gray-200); padding-bottom: 0; }
.baichi-tab-btn {
  padding: 12px 24px; border: none; background: transparent;
  font-size: 14px; font-weight: 600; color: var(--gray-600);
  cursor: pointer; border-radius: var(--radius) var(--radius) 0 0;
  transition: var(--transition);
}
.baichi-tab-btn.active { color: var(--primary); background: rgba(10,42,94,.05); border-bottom: 3px solid var(--primary); margin-bottom: -2px; }
.baichi-tab-content { display: none; padding: 24px 0; }
.baichi-tab-content.active { display: block; }
.baichi-upload { margin-right: 10px; }
.slider-item { margin-bottom: 20px; padding-bottom: 20px; border-bottom: 1px solid var(--gray-200); }
.image-preview { margin-top: 10px; max-width: 200px; border-radius: var(--radius); overflow: hidden; }
.image-preview img { width: 100%; display: block; }

/* ===== AOS ===== */
.aos { opacity: 0; transform: translateY(24px); transition: opacity .6s ease, transform .6s ease; }
.aos.visible { opacity: 1; transform: none; }
.aos-delay-1 { transition-delay: .1s; }
.aos-delay-2 { transition-delay: .2s; }
.aos-delay-3 { transition-delay: .3s; }
.aos-delay-4 { transition-delay: .4s; }
.aos-delay-5 { transition-delay: .5s; }

/* ===== Language Switcher ===== */
.lang-switcher {
  display: flex; align-items: center; gap: 2px;
  margin-right: 12px; flex-shrink: 0;
}
.lang-btn {
  padding: 4px 10px; border-radius: 4px;
  font-size: 13px; font-weight: 600; color: rgba(255,255,255,.6);
  transition: var(--transition); line-height: 1.4;
}
.lang-btn:hover { color: var(--white); background: rgba(255,255,255,.1); }
.lang-btn.active { color: var(--accent); background: rgba(232,160,32,.15); }

/* Mobile lang switcher */
.mobile-lang-switcher {
  display: flex; align-items: center; justify-content: center;
  gap: 2px; padding: 8px 0 12px;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.mobile-lang-btn {
  padding: 6px 14px; border-radius: 4px;
  font-size: 14px; font-weight: 600; color: rgba(255,255,255,.5);
  transition: var(--transition);
}
.mobile-lang-btn:hover { color: var(--white); }
.mobile-lang-btn.active { color: var(--accent); }
.mobile-lang-sep { color: rgba(255,255,255,.2); font-size: 14px; }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .hero-content { grid-template-columns: 1fr; gap: 40px; padding-top: 120px; }
  .hero-visual { display: none; }
  .about-grid { grid-template-columns: 1fr; gap: 48px; }
  .products-grid, .news-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .features-strip-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-strip-item:nth-child(2) { border-right: none; }
  .why-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .section { padding: 72px 0; }
  .nav-links, .nav-cta, .lang-switcher { display: none; }
  .hamburger { display: flex; }
  .hero-content { padding-top: 100px; }
  .hero-title { font-size: 28px; }
  .hero-stats { gap: 20px; flex-wrap: wrap; }
  .products-grid, .news-grid, .why-grid { grid-template-columns: 1fr; }
  .about-highlights, .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .oem-banner { flex-direction: column; text-align: center; }
  .features-strip-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 480px) {
  .features-strip-grid { grid-template-columns: 1fr; }
  .feature-strip-item { border-right: none; border-bottom: 1px solid var(--gray-200); }
  .feature-strip-item:last-child { border-bottom: none; }
  .hero-actions { flex-direction: column; }
}