/* ========================================
   TechServer - 科技服务器行业企业官网模板
   配色: 深空科技蓝 #0052D9
   设计: 极简高端科技风 / 商务沉稳 / 专业靠谱
   ======================================== */

/* ========== CSS Variables ========== */
:root {
  --primary: #0052D9;
  --primary-dark: #003DA5;
  --primary-light: #E8F0FE;
  --primary-gradient: linear-gradient(135deg, #0052D9 0%, #003DA5 100%);
  --secondary: #0F4C81;
  --accent: #4A90D9;
  --text-dark: #1a1a2e;
  --text-body: #4a4a5a;
  --text-light: #8a8a9a;
  --text-muted: #b0b0b8;
  --bg-white: #ffffff;
  --bg-light: #f7f8fa;
  --bg-gray: #eef0f4;
  --bg-dark: #0d1117;
  --bg-footer: #0a0e17;
  --border: #e8eaef;
  --border-light: #f0f1f5;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow: 0 4px 16px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.10);
  --shadow-blue: 0 4px 20px rgba(0,82,217,0.12);
  --radius-sm: 4px;
  --radius: 8px;
  --radius-lg: 12px;
  --transition: all 0.3s ease;
  --font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Helvetica Neue', 'Microsoft YaHei', sans-serif;
  --max-width: 1200px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font-family);
  color: var(--text-body);
  background: var(--bg-white);
  line-height: 1.7;
  overflow-x: hidden;
}

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

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

ul, ol { list-style: none; }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 15px;
}

/* ========== Typography ========== */
h1, h2, h3, h4, h5, h6 {
  color: var(--text-dark);
  font-weight: 600;
  line-height: 1.4;
}
h1 { font-size: 2.25rem; }
h2 { font-size: 1.75rem; }
h3 { font-size: 1.35rem; }
h4 { font-size: 1.15rem; }
h5 { font-size: 1rem; }

.section-title {
  text-align: center;
  margin-bottom: 3rem;
}
.section-title h2 {
  font-size: 2rem;
  color: var(--text-dark);
  margin-bottom: 0.5rem;
}
.section-title .subtitle {
  font-size: 1rem;
  color: var(--text-light);
  font-weight: 400;
}
.section-title .divider {
  width: 50px;
  height: 3px;
  background: var(--primary);
  margin: 0.75rem auto 0;
  border-radius: 2px;
}

/* ========== Buttons ========== */
.btn {
  display: inline-block;
  padding: 10px 28px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  text-align: center;
  line-height: 1.5;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
}
.btn-primary:hover {
  background: var(--primary-dark);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: var(--shadow-blue);
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 1.5px solid var(--primary);
}
.btn-outline:hover {
  background: var(--primary);
  color: #fff;
}

.btn-light {
  background: var(--bg-white);
  color: var(--primary);
  border: 1px solid var(--border);
}
.btn-light:hover {
  border-color: var(--primary);
  color: var(--primary-dark);
}

.btn-lg {
  padding: 14px 36px;
  font-size: 1.05rem;
}

/* ========== 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-light);
  transition: var(--transition);
}
.header.scrolled {
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 15px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
}
.logo img { height: 40px; }
.logo-text {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-dark);
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-list > li { position: relative; }
.nav-list > li > a {
  display: block;
  padding: 8px 16px;
  color: var(--text-body);
  font-size: 0.95rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}
.nav-list > li > a:hover,
.nav-list > li.active > a {
  color: var(--primary);
  background: var(--primary-light);
}
.nav-list > li > .nav-sub {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 160px;
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 8px 0;
  z-index: 100;
}
.nav-list > li:hover > .nav-sub { display: block; }
.nav-sub a {
  display: block;
  padding: 8px 20px;
  color: var(--text-body);
  font-size: 0.9rem;
  transition: var(--transition);
}
.nav-sub a:hover {
  background: var(--primary-light);
  color: var(--primary);
}

.header-contact {
  display: flex;
  align-items: center;
  gap: 16px;
}
.header-phone {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--primary);
  font-weight: 600;
  font-size: 0.95rem;
}

/* Mobile menu toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
}
.menu-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text-dark);
  transition: var(--transition);
}

/* ========== Hero Section ========== */
.hero {
  position: relative;
  min-height: 600px;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, #0a1628 0%, #0d2448 50%, #0a1628 100%);
  overflow: hidden;
  margin-top: 68px;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(0,82,217,0.15) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 50%, rgba(15,76,129,0.1) 0%, transparent 50%);
}
.hero-particles {
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(1px 1px at 10% 20%, rgba(255,255,255,0.15), transparent),
    radial-gradient(1px 1px at 30% 60%, rgba(255,255,255,0.1), transparent),
    radial-gradient(1px 1px at 50% 30%, rgba(255,255,255,0.12), transparent),
    radial-gradient(1px 1px at 70% 70%, rgba(255,255,255,0.08), transparent),
    radial-gradient(1px 1px at 90% 40%, rgba(255,255,255,0.12), transparent),
    radial-gradient(2px 2px at 25% 80%, rgba(0,82,217,0.2), transparent),
    radial-gradient(2px 2px at 65% 15%, rgba(0,82,217,0.15), transparent),
    radial-gradient(1px 1px at 85% 75%, rgba(255,255,255,0.1), transparent);
  background-size: 200px 200px;
}
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 80px 15px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 60px;
}

.hero-text { flex: 1; }
.hero-text h1 {
  font-size: 2.8rem;
  font-weight: 700;
  color: #fff;
  line-height: 1.3;
  margin-bottom: 1rem;
}
.hero-text h1 span {
  background: linear-gradient(135deg, #4A90D9, #7BB3F0);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-text .hero-desc {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.7);
  margin-bottom: 2rem;
  max-width: 520px;
}
.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-visual {
  flex: 0 0 420px;
  position: relative;
}
.hero-card {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-lg);
  padding: 32px;
  backdrop-filter: blur(20px);
}
.hero-card .stat-row {
  display: flex;
  gap: 24px;
  margin-bottom: 20px;
}
.hero-card .stat-item {
  flex: 1;
  text-align: center;
}
.hero-card .stat-num {
  font-size: 2rem;
  font-weight: 700;
  color: #4A90D9;
}
.hero-card .stat-label {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.5);
  margin-top: 4px;
}
.hero-card .feature-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.hero-card .feature-tag {
  padding: 6px 14px;
  background: rgba(0,82,217,0.2);
  border: 1px solid rgba(0,82,217,0.3);
  border-radius: 20px;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.8);
}

/* ========== Section Common ========== */
.section {
  padding: 80px 0;
}
.section-gray { background: var(--bg-light); }
.section-dark { background: var(--bg-dark); color: #fff; }

/* ========== Business Cards (三大核心业务) ========== */
.biz-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.biz-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 40px 30px;
  text-align: center;
  border: 1px solid var(--border-light);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.biz-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--primary-gradient);
  opacity: 0;
  transition: var(--transition);
}
.biz-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.biz-card:hover::before { opacity: 1; }
.biz-card .biz-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  background: var(--primary-light);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  color: var(--primary);
}
.biz-card h3 {
  font-size: 1.2rem;
  margin-bottom: 12px;
}
.biz-card p {
  color: var(--text-light);
  font-size: 0.9rem;
  margin-bottom: 20px;
  line-height: 1.6;
}

/* ========== Product Cards ========== */
.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.product-card {
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border-light);
  transition: var(--transition);
}
.product-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.product-card .product-img {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4/3;
  background: var(--bg-gray);
}
.product-card .product-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.product-card:hover .product-img img { transform: scale(1.05); }
.product-card .product-tags {
  position: absolute;
  top: 12px;
  left: 12px;
  display: flex;
  gap: 6px;
}
.product-card .product-tag {
  padding: 4px 10px;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 500;
}
.tag-new { background: #0052D9; color: #fff; }
.tag-hot { background: #fff; color: var(--primary); border: 1px solid var(--primary); }

.product-card .product-info {
  padding: 16px 20px;
}
.product-card .product-info h4 {
  font-size: 1rem;
  margin-bottom: 8px;
}
.product-card .product-info h4 a {
  color: var(--text-dark);
}
.product-card .product-info h4 a:hover { color: var(--primary); }
.product-card .product-meta {
  display: flex;
  gap: 12px;
  font-size: 0.8rem;
  color: var(--text-light);
}
.product-card .product-action {
  padding: 0 20px 16px;
}

/* ========== Case Cards ========== */
.case-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.case-card {
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border-light);
  transition: var(--transition);
}
.case-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.case-card .case-img {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16/10;
  background: var(--bg-gray);
}
.case-card .case-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.case-card:hover .case-img img { transform: scale(1.05); }
.case-card .case-cat {
  position: absolute;
  bottom: 12px;
  left: 12px;
  padding: 4px 12px;
  background: rgba(0,82,217,0.9);
  color: #fff;
  font-size: 0.75rem;
  border-radius: 4px;
}
.case-card .case-info {
  padding: 20px;
}
.case-card .case-info h4 {
  font-size: 1rem;
  margin-bottom: 8px;
}
.case-card .case-info h4 a { color: var(--text-dark); }
.case-card .case-info h4 a:hover { color: var(--primary); }
.case-card .case-info p {
  color: var(--text-light);
  font-size: 0.85rem;
  line-height: 1.6;
}

/* ========== News Cards ========== */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.news-card {
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border-light);
  transition: var(--transition);
}
.news-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.news-card .news-img {
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--bg-gray);
}
.news-card .news-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.news-card:hover .news-img img { transform: scale(1.05); }
.news-card .news-body {
  padding: 20px;
}
.news-card .news-body h4 {
  font-size: 1rem;
  margin-bottom: 10px;
}
.news-card .news-body h4 a { color: var(--text-dark); }
.news-card .news-body h4 a:hover { color: var(--primary); }
.news-card .news-body p {
  color: var(--text-light);
  font-size: 0.85rem;
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-card .news-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 12px;
  border-top: 1px solid var(--border-light);
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ========== Advantages ========== */
.adv-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.adv-item {
  text-align: center;
  padding: 30px 20px;
}
.adv-item .adv-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
  background: var(--primary-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  color: var(--primary);
}
.adv-item h4 { font-size: 1rem; margin-bottom: 8px; }
.adv-item p { font-size: 0.85rem; color: var(--text-light); }

/* ========== Partners/Clients ========== */
.partner-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 24px;
  align-items: center;
}
.partner-item {
  padding: 16px;
  text-align: center;
  filter: grayscale(100%);
  opacity: 0.6;
  transition: var(--transition);
}
.partner-item:hover {
  filter: grayscale(0);
  opacity: 1;
}
.partner-item img {
  max-height: 48px;
  margin: 0 auto;
}

/* ========== CTA Section ========== */
.cta-section {
  background: var(--primary-gradient);
  padding: 60px 0;
  text-align: center;
  color: #fff;
}
.cta-section h2 {
  color: #fff;
  font-size: 1.8rem;
  margin-bottom: 12px;
}
.cta-section p {
  font-size: 1rem;
  opacity: 0.85;
  margin-bottom: 24px;
}
.cta-section .btn {
  background: #fff;
  color: var(--primary);
  font-weight: 600;
}
.cta-section .btn:hover {
  background: rgba(255,255,255,0.9);
}

/* ========== Footer ========== */
.footer {
  background: var(--bg-footer);
  color: rgba(255,255,255,0.6);
  padding-top: 60px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
  padding-bottom: 40px;
}
.footer-col h4 {
  color: #fff;
  font-size: 1.05rem;
  margin-bottom: 20px;
  font-weight: 600;
}
.footer-col p, .footer-col li {
  font-size: 0.9rem;
  line-height: 2;
}
.footer-col li a {
  color: rgba(255,255,255,0.5);
  transition: var(--transition);
}
.footer-col li a:hover { color: var(--accent); }
.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  margin-bottom: 8px;
}
.footer-contact .contact-icon {
  color: var(--accent);
  margin-top: 4px;
}
.footer-qr { text-align: center; }
.footer-qr img {
  width: 100px;
  height: 100px;
  margin: 0 auto 8px;
  border-radius: 8px;
  background: #fff;
  padding: 4px;
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 20px 0;
  text-align: center;
  font-size: 0.85rem;
}
.footer-bottom a { color: rgba(255,255,255,0.5); }
.footer-bottom a:hover { color: var(--accent); }

/* ========== Inner Page Banner ========== */
.page-banner {
  background: linear-gradient(135deg, #0a1628 0%, #0d2448 100%);
  padding: 60px 0 40px;
  margin-top: 68px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.page-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(1px 1px at 20% 50%, rgba(255,255,255,0.08), transparent),
    radial-gradient(1px 1px at 60% 30%, rgba(255,255,255,0.06), transparent),
    radial-gradient(1px 1px at 80% 70%, rgba(255,255,255,0.06), transparent);
  background-size: 150px 150px;
}
.page-banner h2 {
  color: #fff;
  font-size: 1.8rem;
  margin-bottom: 8px;
  position: relative;
}
.page-banner .breadcrumb {
  display: flex;
  justify-content: center;
  gap: 8px;
  font-size: 0.9rem;
  color: rgba(255,255,255,0.5);
  position: relative;
}
.page-banner .breadcrumb a { color: rgba(255,255,255,0.6); }
.page-banner .breadcrumb a:hover { color: #fff; }
.page-banner .breadcrumb .sep { color: rgba(255,255,255,0.3); }

/* ========== Page Content ========== */
.page-content {
  padding: 60px 0;
  min-height: 400px;
}

/* ========== Product Detail ========== */
.product-detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}
.product-gallery .main-img {
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-gray);
  margin-bottom: 12px;
}
.product-gallery .main-img img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
}
.product-gallery .thumb-list {
  display: flex;
  gap: 8px;
}
.product-gallery .thumb-list img {
  width: 72px;
  height: 54px;
  object-fit: cover;
  border-radius: 4px;
  cursor: pointer;
  border: 2px solid transparent;
  transition: var(--transition);
}
.product-gallery .thumb-list img.active,
.product-gallery .thumb-list img:hover {
  border-color: var(--primary);
}

.product-info h1 {
  font-size: 1.6rem;
  margin-bottom: 16px;
}
.product-info .info-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 20px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-light);
}
.product-info .meta-item {
  font-size: 0.85rem;
  color: var(--text-light);
}
.product-info .meta-item strong { color: var(--text-dark); }

.product-info .spec-table {
  width: 100%;
  margin-bottom: 24px;
}
.product-info .spec-table td {
  padding: 8px 0;
  font-size: 0.9rem;
  border-bottom: 1px dashed var(--border-light);
}
.product-info .spec-table td:first-child {
  color: var(--text-light);
  width: 100px;
}
.product-info .price-inquiry {
  background: var(--primary-light);
  border-radius: var(--radius);
  padding: 16px 20px;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 16px;
}
.product-info .price-inquiry .label {
  font-size: 0.9rem;
  color: var(--text-light);
}
.product-info .price-inquiry .action {
  font-weight: 600;
  color: var(--primary);
}

/* Product tabs */
.product-tabs {
  display: flex;
  border-bottom: 2px solid var(--border-light);
  margin-bottom: 24px;
}
.product-tabs .tab-item {
  padding: 12px 24px;
  cursor: pointer;
  font-weight: 500;
  color: var(--text-light);
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: var(--transition);
}
.product-tabs .tab-item.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

/* ========== Service Detail Page ========== */
.service-process {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin: 40px 0;
}
.process-step {
  text-align: center;
  position: relative;
}
.process-step::after {
  content: '';
  position: absolute;
  top: 28px;
  right: -30px;
  width: 60px;
  height: 1px;
  background: var(--border);
}
.process-step:last-child::after { display: none; }
.process-step .step-num {
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
  background: var(--primary);
  color: #fff;
  font-size: 1.2rem;
  font-weight: 700;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}
.process-step h4 { font-size: 0.95rem; margin-bottom: 6px; }
.process-step p { font-size: 0.82rem; color: var(--text-light); }

/* ========== FAQ Accordion ========== */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  margin-bottom: 12px;
  overflow: hidden;
}
.faq-q {
  padding: 18px 24px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-dark);
  background: #fff;
  transition: var(--transition);
}
.faq-q:hover { background: var(--bg-light); }
.faq-q .faq-arrow {
  transition: transform 0.3s ease;
  color: var(--text-light);
}
.faq-item.open .faq-arrow { transform: rotate(180deg); }
.faq-a {
  padding: 0 24px;
  max-height: 0;
  overflow: hidden;
  transition: all 0.3s ease;
  color: var(--text-body);
  font-size: 0.9rem;
  line-height: 1.8;
}
.faq-item.open .faq-a {
  padding: 0 24px 20px;
  max-height: 500px;
}

/* ========== Contact Page ========== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}
.contact-info h2 { margin-bottom: 24px; }
.contact-info .info-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 16px;
  padding: 16px;
  background: var(--bg-light);
  border-radius: var(--radius);
}
.contact-info .info-list .info-icon {
  width: 40px;
  height: 40px;
  background: var(--primary-light);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  flex-shrink: 0;
}
.contact-form-wrap {
  background: #fff;
  padding: 32px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
}
.contact-form-wrap h3 { margin-bottom: 24px; }

.form-group { margin-bottom: 16px; }
.form-group label {
  display: block;
  margin-bottom: 6px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-dark);
}
.form-control {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-family: var(--font-family);
  transition: var(--transition);
  background: var(--bg-light);
  color: var(--text-dark);
  outline: none;
}
.form-control:focus {
  border-color: var(--primary);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(0,82,217,0.1);
}
textarea.form-control { min-height: 120px; resize: vertical; }
select.form-control { appearance: none; }

/* ========== Certificates Grid ========== */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.cert-item {
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
}
.cert-item:hover {
  box-shadow: var(--shadow);
  border-color: var(--primary);
}
.cert-item img {
  max-height: 120px;
  margin: 0 auto 12px;
}
.cert-item h5 { font-size: 0.9rem; }

/* ========== Sidebar (for list pages) ========== */
.page-with-sidebar {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 32px;
}
.sidebar {
  background: #fff;
  border-radius: var(--radius);
  border: 1px solid var(--border-light);
  overflow: hidden;
}
.sidebar-title {
  padding: 16px 20px;
  font-weight: 600;
  font-size: 1rem;
  background: var(--primary);
  color: #fff;
}
.sidebar-nav li a {
  display: block;
  padding: 12px 20px;
  color: var(--text-body);
  font-size: 0.9rem;
  border-bottom: 1px solid var(--border-light);
  transition: var(--transition);
}
.sidebar-nav li a:hover,
.sidebar-nav li a.active {
  color: var(--primary);
  background: var(--primary-light);
  padding-left: 24px;
}

/* ========== List Toolbar ========== */
.list-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  background: var(--bg-light);
  border-radius: var(--radius);
  margin-bottom: 20px;
}
.list-toolbar .result-count {
  font-size: 0.9rem;
  color: var(--text-light);
}

/* ========== Pagination ========== */
.pagination {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 40px;
}
.pagination a, .pagination span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 36px;
  padding: 0 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  color: var(--text-body);
  transition: var(--transition);
}
.pagination a:hover { border-color: var(--primary); color: var(--primary); }
.pagination .active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}
.pagination .disabled {
  color: var(--text-muted);
  pointer-events: none;
}

/* ========== Tags ========== */
.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 20px 0;
}
.tag-cloud a {
  padding: 6px 16px;
  border: 1px solid var(--border);
  border-radius: 20px;
  font-size: 0.85rem;
  color: var(--text-body);
  transition: var(--transition);
}
.tag-cloud a:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

/* ========== Floating Contact ========== */
.float-contact {
  position: fixed;
  right: 16px;
  bottom: 120px;
  z-index: 999;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.float-contact a {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow);
  transition: var(--transition);
  font-size: 1.2rem;
  color: var(--primary);
  position: relative;
}
.float-contact a:hover {
  background: var(--primary);
  color: #fff;
  transform: scale(1.1);
}
.float-contact a .float-tip {
  position: absolute;
  right: 60px;
  white-space: nowrap;
  background: var(--text-dark);
  color: #fff;
  padding: 6px 12px;
  border-radius: 4px;
  font-size: 0.8rem;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  pointer-events: none;
}
.float-contact a:hover .float-tip {
  opacity: 1;
  visibility: visible;
}

/* ========== Search Page ========== */
.search-box {
  max-width: 600px;
  margin: 0 auto 40px;
}
.search-box .search-input-wrap {
  display: flex;
  gap: 0;
}
.search-box .search-input-wrap input {
  flex: 1;
  border-radius: var(--radius-sm) 0 0 var(--radius-sm);
}
.search-box .search-input-wrap button {
  padding: 10px 24px;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  cursor: pointer;
  font-size: 0.95rem;
  transition: var(--transition);
}
.search-box .search-input-wrap button:hover { background: var(--primary-dark); }

.search-result-item {
  padding: 20px 0;
  border-bottom: 1px solid var(--border-light);
}
.search-result-item h4 {
  font-size: 1.05rem;
  margin-bottom: 6px;
}
.search-result-item h4 a { color: var(--text-dark); }
.search-result-item h4 a:hover { color: var(--primary); }
.search-result-item p {
  font-size: 0.85rem;
  color: var(--text-light);
  line-height: 1.6;
}
.search-result-item .result-url {
  font-size: 0.8rem;
  color: var(--accent);
  margin-top: 4px;
}

/* ========== 404 Page ========== */
.page-404 {
  text-align: center;
  padding: 100px 0;
}
.page-404 .code {
  font-size: 8rem;
  font-weight: 800;
  color: var(--bg-gray);
  line-height: 1;
  margin-bottom: 16px;
}
.page-404 h2 {
  font-size: 1.5rem;
  margin-bottom: 12px;
}
.page-404 p {
  color: var(--text-light);
  margin-bottom: 24px;
}

/* ========== Mobile Bottom Bar ========== */
.mobile-bar {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 999;
  background: #fff;
  border-top: 1px solid var(--border-light);
  padding: 6px 0 env(safe-area-inset-bottom);
}
.mobile-bar-inner {
  display: flex;
  align-items: center;
  justify-content: space-around;
}
.mobile-bar a {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  font-size: 0.7rem;
  color: var(--text-light);
  padding: 4px 8px;
}
.mobile-bar a.active { color: var(--primary); }
.mobile-bar a .bar-icon { font-size: 1.2rem; }

/* ========== Scroll Animations ========== */
.fade-in-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ========== Content Styles (Rich Text) ========== */
.content {
  line-height: 1.8;
  color: var(--text-body);
}
.content h2, .content h3, .content h4 {
  margin: 24px 0 12px;
}
.content p { margin-bottom: 16px; }
.content img {
  max-width: 100%;
  border-radius: var(--radius);
  margin: 16px 0;
}
.content table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
}
.content table td, .content table th {
  border: 1px solid var(--border);
  padding: 10px 14px;
  font-size: 0.9rem;
}
.content table th {
  background: var(--bg-light);
  font-weight: 600;
}
.content ul, .content ol {
  padding-left: 20px;
  margin-bottom: 16px;
}
.content ul li { list-style: disc; }
.content ol li { list-style: decimal; }

/* Prev/Next */
.prev-next {
  display: flex;
  justify-content: space-between;
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid var(--border-light);
}
.prev-next a {
  font-size: 0.9rem;
  color: var(--text-body);
  max-width: 45%;
}
.prev-next a:hover { color: var(--primary); }

/* Related */
.related-title {
  font-size: 1.2rem;
  margin: 40px 0 20px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--primary);
}

/* ========== Responsive ========== */
@media (max-width: 1024px) {
  .product-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .adv-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  h1 { font-size: 1.6rem; }
  h2 { font-size: 1.35rem; }
  .section { padding: 48px 0; }

  /* Header */
  .header-inner { height: 56px; }
  .nav-list { display: none; }
  .nav-list.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 56px;
    left: 0;
    right: 0;
    background: #fff;
    border-bottom: 1px solid var(--border-light);
    padding: 12px 0;
    box-shadow: var(--shadow-lg);
  }
  .menu-toggle { display: flex; }
  .header-contact { display: none; }

  /* Hero */
  .hero { margin-top: 56px; min-height: auto; }
  .hero-content {
    flex-direction: column;
    padding: 48px 15px;
    gap: 32px;
  }
  .hero-text h1 { font-size: 1.8rem; }
  .hero-visual { flex: none; width: 100%; }

  /* Grids */
  .biz-grid { grid-template-columns: 1fr; }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .case-grid { grid-template-columns: 1fr; }
  .news-grid { grid-template-columns: 1fr; }
  .partner-grid { grid-template-columns: repeat(3, 1fr); }
  .service-process { grid-template-columns: repeat(2, 1fr); }
  .cert-grid { grid-template-columns: repeat(2, 1fr); }

  .process-step::after { display: none; }

  /* Product Detail */
  .product-detail { grid-template-columns: 1fr; gap: 24px; }

  /* Contact */
  .contact-grid { grid-template-columns: 1fr; }

  /* Sidebar */
  .page-with-sidebar { grid-template-columns: 1fr; }
  .sidebar { margin-bottom: 20px; }

  /* Footer */
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }

  /* Page banner */
  .page-banner { margin-top: 56px; padding: 40px 0 24px; }
  .page-banner h2 { font-size: 1.4rem; }

  /* Float */
  .float-contact { right: 8px; bottom: 80px; }
  .mobile-bar { display: block; }
  body { padding-bottom: 56px; }
}

@media (max-width: 480px) {
  .product-grid { grid-template-columns: 1fr; }
  .partner-grid { grid-template-columns: repeat(2, 1fr); }
  .adv-grid { grid-template-columns: 1fr; }
  .service-process { grid-template-columns: 1fr; }
  .cert-grid { grid-template-columns: 1fr; }
}

/* ========== Utility ========== */
.text-center { text-align: center; }
.text-primary { color: var(--primary); }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mt-4 { margin-top: 32px; }
.mt-5 { margin-top: 48px; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.mb-4 { margin-bottom: 32px; }
.mb-5 { margin-bottom: 48px; }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
}

/* ===== 导航栏换行修复 ===== */
/* 修复：导航文字强制不换行 */
.nav-list > li > a {
  white-space: nowrap !important;
  padding: 8px 10px !important;
  font-size: 0.875rem !important;
  letter-spacing: 0.01em;
}
.nav-list {
  gap: 0px !important;
}

/* Logo 文字过长问题 */
.logo-text {
  font-size: 1.1rem !important;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 180px;
}
.logo {
  gap: 6px !important;
  flex-shrink: 0;
}
.logo img {
  height: 36px !important;
}

/* 宽屏适当放松 */
@media (min-width: 1440px) {
  .nav-list > li > a {
    padding: 8px 14px !important;
    font-size: 0.925rem !important;
  }
  .logo-text {
    max-width: 240px;
    font-size: 1.2rem !important;
  }
}

/* 1100px~1300px 中间宽度：隐藏电话，只保留图标 */
@media (max-width: 1300px) and (min-width: 1025px) {
  .header-phone {
    font-size: 0;
    gap: 0;
  }
  .header-phone svg {
    width: 20px;
    height: 20px;
    stroke-width: 2.5;
  }
  .nav-list > li > a {
    padding: 8px 8px !important;
    font-size: 0.82rem !important;
  }
}

/* 移动端汉堡菜单微调 */
.nav-list.open > li > a {
  white-space: nowrap;
}
.nav-list.open {
  gap: 4px !important;
}

/* ===== Logo 副标题修复 ===== */
.logo-text small {
  display: block;
  font-size: 0.55em;
  font-weight: 400;
  color: var(--text-light);
  letter-spacing: 0.08em;
  margin-top: -2px;
  opacity: 0.8;
  white-space: nowrap;
}
.logo-text {
  line-height: 1.2 !important;
  max-width: none !important;
}

/* ===== Header 高度压缩修复 ===== */
.header-inner {
  height: 56px !important;
  padding: 0 16px !important;
}
.logo img {
  height: 30px !important;
}
.nav-list > li > a {
  padding: 6px 10px !important;
}
.nav-sub {
  top: 56px !important;
}
/* ========================================
   szbsup.com UI 增强补丁 V2.0
   使用方式: 追加到 style.css 末尾即可覆盖
   零侵入: 不改动原有模板HTML结构和标签
   ======================================== */

/* === 色彩系统增强 === */
:root {
  --accent: #00C2FF;
  --accent-glow: rgba(0, 194, 255, 0.15);
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-blue-lg: 0 8px 32px rgba(0, 82, 217, 0.20);
  --radius-sm: 6px;
  --radius: 10px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --font-mono: 'SF Mono', 'Fira Code', 'Consolas', monospace;
}

/* === Hero 动态光效增强 === */
.hero {
  background: linear-gradient(135deg, #060912 0%, #0a1628 40%, #0d2448 100%) !important;
}
.hero::before {
  background:
    radial-gradient(ellipse 600px 300px at 15% 50%, rgba(0, 82, 217, 0.20), transparent),
    radial-gradient(ellipse 400px 200px at 85% 30%, rgba(0, 194, 255, 0.12), transparent),
    radial-gradient(ellipse 300px 200px at 50% 80%, rgba(0, 82, 217, 0.08), transparent) !important;
  animation: heroGlow 8s ease-in-out infinite alternate;
}
@keyframes heroGlow {
  0% { transform: scale(1) translateX(0); opacity: 0.8; }
  100% { transform: scale(1.1) translateX(20px); opacity: 1; }
}
.hero-grid {
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
}
.hero-particles {
  background-size: 250px 250px !important;
}

/* Hero 标签 */
.hero-text .eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 14px;
  border-radius: 20px;
  background: rgba(0, 194, 255, 0.1);
  border: 1px solid rgba(0, 194, 255, 0.25);
  font-size: 12px;
  color: var(--accent);
  margin-bottom: 20px;
}
.hero-text .eyebrow .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

/* Hero 标题渐变 */
.hero-text h1 .highlight {
  background: linear-gradient(135deg, #4A90D9, #00C2FF);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Hero 数据面板 */
.hero-card {
  position: relative;
}
.hero-card::before {
  content: '';
  position: absolute;
  top: -1px;
  left: -1px;
  right: -1px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0.5;
}
.hero-card .stat-num {
  background: linear-gradient(135deg, #fff, var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-card .feature-tag:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(0, 194, 255, 0.08);
}

/* === 按钮增强 === */
.btn-primary {
  background: linear-gradient(135deg, #0052D9, #003DA5) !important;
  box-shadow: 0 4px 16px rgba(0, 82, 217, 0.3);
  position: relative;
  overflow: hidden;
}
.btn-primary:hover {
  box-shadow: 0 8px 24px rgba(0, 82, 217, 0.4) !important;
}
.btn-primary::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  transform: translate(-50%, -50%);
  transition: width 0.5s, height 0.5s;
  pointer-events: none;
}
.btn-primary:hover::after { width: 300px; height: 300px; }

.btn-outline:hover {
  border-color: var(--accent) !important;
  color: var(--accent) !important;
  background: rgba(0, 194, 255, 0.05) !important;
}

/* === 产品卡片增强 === */
.product-card {
  border-radius: var(--radius) !important;
}
.product-card:hover {
  border-color: transparent !important;
}
.product-card .product-img {
  background: linear-gradient(135deg, #0a1628 0%, #0d2448 50%, #0a1628 100%) !important;
}
.product-card .product-img img[src*="pbootcms"],
.product-card .product-img img:not([src]),
.product-card .product-img:not(:has(img)) {
  position: relative;
}
.product-card .product-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='48' height='48' viewBox='0 0 24 24' fill='none' stroke='rgba(0,194,255,0.3)' stroke-width='1.5'%3E%3Crect x='2' y='3' width='20' height='14' rx='2'/%3E%3Cline x1='8' y1='21' x2='16' y2='21'/%3E%3Cline x1='12' y1='17' x2='12' y2='21'/%3E%3C/svg%3E") center no-repeat;
  opacity: 0;
  transition: opacity 0.3s;
}
.product-card .product-img:empty::after,
.product-card .product-img img[src=""] {
  opacity: 1;
}

/* 库存徽章 */
.tag-stock {
  position: absolute;
  top: 12px;
  right: 12px;
  padding: 4px 10px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 600;
  background: rgba(34, 197, 94, 0.15);
  color: #16a34a;
  border: 1px solid rgba(34, 197, 94, 0.3);
}

/* 产品标签增强 */
.tag-hot {
  background: linear-gradient(135deg, #0052D9, #003DA5) !important;
  color: #fff !important;
  box-shadow: 0 2px 8px rgba(0, 82, 217, 0.3);
}
.product-tag {
  font-weight: 600 !important;
  letter-spacing: 0.02em;
}

/* 产品meta增强 */
.product-meta {
  gap: 8px !important;
}
.meta-chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 8px;
  border-radius: 4px;
  font-size: 11px;
  color: var(--text-light);
  background: var(--bg-light);
}
.meta-chip strong { color: var(--text-dark); font-weight: 600; }

/* 产品询价按钮 */
.product-action .btn {
  background: var(--primary-light) !important;
  color: var(--primary) !important;
  border: 1px solid rgba(0, 82, 217, 0.15);
  transition: all 0.3s !important;
}
.product-action .btn:hover {
  background: linear-gradient(135deg, #0052D9, #003DA5) !important;
  color: #fff !important;
  border-color: transparent !important;
}

/* === 优势区块增强 === */
.adv-item {
  background: #fff;
  border-radius: var(--radius-lg) !important;
  border: 1px solid var(--border-light);
  position: relative;
  overflow: hidden;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1) !important;
}
.adv-item::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transform: scaleX(0);
  transition: transform 0.4s ease;
}
.adv-item:hover {
  transform: translateY(-4px) !important;
  box-shadow: var(--shadow-md) !important;
}
.adv-item:hover::before { transform: scaleX(1); }
.adv-item .adv-icon {
  background: linear-gradient(135deg, var(--primary-light), rgba(0, 194, 255, 0.08)) !important;
  border-radius: 14px !important;
  transition: all 0.3s !important;
}
.adv-item:hover .adv-icon {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark)) !important;
  color: #fff !important;
  transform: scale(1.05);
}
.adv-item .adv-num {
  position: absolute;
  top: 12px;
  right: 16px;
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--bg-gray);
  line-height: 1;
  font-family: var(--font-mono);
  transition: color 0.3s;
}
.adv-item:hover .adv-num { color: var(--primary-light); }

/* === CTA 增强增强 === */
.cta-section {
  background: linear-gradient(135deg, #0052D9 0%, #003DA5 50%, #002470 100%) !important;
  border-radius: 0 !important;
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 300px 150px at 20% 30%, rgba(0, 194, 255, 0.15), transparent),
    radial-gradient(ellipse 300px 150px at 80% 70%, rgba(255, 255, 255, 0.05), transparent);
}
.cta-section::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(ellipse at center, black 20%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 20%, transparent 70%);
}
.cta-section .container { position: relative; z-index: 1; }
.cta-section .btn {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15) !important;
}

/* === 表单增强 === */
.form-group label .req { color: #ef4444; margin-left: 2px; }

.input-wrap {
  position: relative;
}
.input-wrap .input-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  transition: all 0.3s;
  pointer-events: none;
  z-index: 1;
}
.form-control {
  padding: 10px 14px 10px 38px !important;
  border: 1.5px solid var(--border) !important;
  border-radius: var(--radius-sm) !important;
  transition: all 0.3s !important;
}
.form-control:focus {
  border-color: var(--primary) !important;
  box-shadow: 0 0 0 4px rgba(0, 82, 217, 0.08) !important;
}
.input-wrap:focus-within .input-icon {
  color: var(--primary);
}
textarea.form-control {
  padding-left: 14px !important;
}

/* === 阴影系统增强 === */
.biz-card,
.case-card,
.news-card,
.contact-form-wrap,
.sidebar {
  border-radius: var(--radius-lg) !important;
  box-shadow: var(--shadow-xs) !important;
}
.biz-card:hover,
.case-card:hover,
.news-card:hover {
  box-shadow: var(--shadow-lg) !important;
}

/* === 导航增强 === */
.header {
  backdrop-filter: blur(16px) !important;
}
.nav-list > li > a {
  border-radius: var(--radius-sm) !important;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1) !important;
}
.nav-sub {
  border-radius: var(--radius) !important;
  border: 1px solid var(--border-light);
}
.nav-sub a {
  transition: all 0.2s !important;
}
.nav-sub a:hover {
  padding-left: 24px;
}

/* === 页面横幅增强 === */
.page-banner {
  background: linear-gradient(135deg, #060912 0%, #0a1628 40%, #0d2448 100%) !important;
  position: relative;
}
.page-banner::before {
  background:
    radial-gradient(ellipse 400px 200px at 20% 50%, rgba(0, 82, 217, 0.15), transparent),
    radial-gradient(ellipse 300px 150px at 80% 30%, rgba(0, 194, 255, 0.08), transparent) !important;
}

/* === 浮动按钮增强 === */
.float-contact a {
  border-radius: 50% !important;
  box-shadow: var(--shadow-md) !important;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1) !important;
}
.float-contact a:hover {
  transform: scale(1.1) !important;
}

/* === 分页增强 === */
.pagination a, .pagination span {
  border-radius: var(--radius-sm) !important;
  font-weight: 500;
  transition: all 0.2s !important;
}
.pagination a:hover {
  background: var(--primary-light) !important;
}
.pagination .active {
  box-shadow: 0 2px 8px rgba(0, 82, 217, 0.3);
}

/* === 滚动动画增强 === */
.fade-in-up {
  transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1), transform 0.6s cubic-bezier(0.4, 0, 0.2, 1) !important;
}

/* === Section 标题增强 === */
.section-title .divider {
  height: 4px !important;
  width: 60px !important;
  background: linear-gradient(90deg, var(--primary), var(--accent)) !important;
  border-radius: 2px !important;
}
.section-title h2 {
  letter-spacing: 0.02em;
}

/* === 移动端增强 === */
@media (max-width: 768px) {
  .hero-text h1 { font-size: 1.6rem !important; }
  .hero-content { padding: 40px 15px !important; gap: 24px !important; }
  .adv-item { padding: 24px 16px !important; }
  .adv-item .adv-num { font-size: 2rem; }
  .product-card { border-radius: var(--radius) !important; }
  .cta-section { padding: 40px 20px !important; }
  .cta-section h2 { font-size: 1.3rem !important; }
  .float-contact { bottom: 72px !important; }
  .float-contact a {
    width: 44px !important;
    height: 44px !important;
  }
}

/* === 滚动条美化 === */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--bg-light); }
::-webkit-scrollbar-thumb { background: var(--text-muted); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-light); }

/* === 选中文本美化 === */
::selection {
  background: rgba(0, 82, 217, 0.15);
  color: var(--primary);
}

/* ===== 消除白色占位断层 ===== */
/* 删除 head-placeholder 后，用 Hero 自身 padding 补偿 header 高度 */
.hero {
  padding-top: 56px !important;
}
/* 同时压缩 Hero 总高度，让首屏更紧凑 */
.hero-content {
  padding-top: 32px !important;
  padding-bottom: 48px !important;
}

/* ZLD Logo image style */
.logo img {
  
  height: 40px !important;
  
  width: 40px !important;
  object-fit: contain;
  display: block;
}
.logo-text.has-logo {
  display: none !important;
}

/* ===== Hero 机房背景图 ===== */
.hero {
  background-image: url('/static/upload/image/2026/hero-datacenter.png') !important;
  background-size: cover !important;
  background-position: center center !important;
  background-repeat: no-repeat !important;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(10,22,40,0.82) 0%, rgba(0,82,217,0.55) 50%, rgba(10,22,40,0.82) 100%) !important;
  z-index: 1;
}
.hero .hero-content {
  position: relative;
  z-index: 2;
}
.hero { position: relative; }