/* ============================================
   靖通科技（三河市）有限公司 - 企业官网
   设计风格：简约大气 / 科技蓝主色调
   ============================================ */

/* --- CSS Variables --- */
:root {
  --color-primary: #0a2d5c;
  --color-primary-light: #0f437a;
  --color-secondary: #1657a0;
  --color-accent: #3b82f6;
  --color-accent-light: #60a5fa;
  --color-bg: #f8fafc;
  --color-bg-alt: #f1f5f9;
  --color-white: #ffffff;
  --color-dark: #1e293b;
  --color-text: #334155;
  --color-text-light: #64748b;
  --color-text-muted: #94a3b8;
  --color-border: #e2e8f0;
  --color-success: #10b981;
  --color-warning: #f59e0b;

  --font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 25px -5px rgba(0, 0, 0, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
  --shadow-xl: 0 20px 40px -10px rgba(0, 0, 0, 0.1);

  --max-width: 1200px;
  --header-height: 72px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.7;
  color: var(--color-text);
  background-color: var(--color-white);
  padding-top: var(--header-height);
}

a {
  text-decoration: none;
  color: inherit;
  transition: color 0.2s ease;
}

ul { list-style: none; }

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

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  color: var(--color-dark);
  font-weight: 700;
  line-height: 1.3;
}

h1 { font-size: var(--font-size-5xl); }
h2 { font-size: var(--font-size-4xl); margin-bottom: 1rem; }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }

.section-title {
  text-align: center;
  margin-bottom: 3rem;
}

.section-title h2 {
  margin-bottom: 0.5rem;
}

.section-title .title-line {
  display: inline-block;
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-accent-light));
  border-radius: 2px;
  margin: 0.5rem auto 0;
}

.section-title p {
  color: var(--color-text-light);
  font-size: var(--font-size-lg);
  max-width: 600px;
  margin: 0.75rem auto 0;
}

.section-subtitle {
  font-size: var(--font-size-sm);
  color: var(--color-accent);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 36px;
  font-size: var(--font-size-base);
  font-weight: 600;
  border-radius: 50px;
  cursor: pointer;
  transition: all 0.3s ease;
  border: none;
  font-family: inherit;
  letter-spacing: 0.02em;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-accent), var(--color-secondary));
  color: var(--color-white);
  box-shadow: 0 4px 15px rgba(59, 130, 246, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(59, 130, 246, 0.45);
}

.btn-outline {
  background: transparent;
  color: var(--color-white);
  border: 2px solid rgba(255, 255, 255, 0.4);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--color-white);
}

.btn-secondary {
  background: var(--color-white);
  color: var(--color-primary);
  border: 2px solid var(--color-border);
}

.btn-secondary:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.btn-sm {
  padding: 10px 24px;
  font-size: var(--font-size-sm);
}

/* --- Header / Navigation --- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
  z-index: 1000;
  transition: box-shadow 0.3s ease;
}

.header.scrolled {
  box-shadow: var(--shadow-md);
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-primary);
}

.logo img {
  height: 48px;
  width: auto;
  display: block;
  border-radius: 50%;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.logo:hover img {
  transform: scale(1.05);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
}

.logo-text {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-primary);
  white-space: nowrap;
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--color-accent), var(--color-secondary));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: var(--font-size-xl);
  font-weight: 800;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-list a {
  padding: 8px 12px;
  border-radius: 50px;
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--color-text);
  transition: all 0.2s ease;
  position: relative;
  white-space: nowrap;
}

/* 「周边服务」二级下拉菜单（大厂服务 / 北京服务 SEO 落地页） */
.nav-item-drop {
  position: relative;
}

.nav-caret {
  font-size: 0.65em;
  margin-left: 2px;
  opacity: 0.55;
}

.nav-drop-menu {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translate(-50%, 6px);
  min-width: 148px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: 6px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  opacity: 0;
  visibility: hidden;
  transition: all 0.2s ease;
  z-index: 1001;
}

.nav-item-drop:hover .nav-drop-menu,
.nav-item-drop:focus-within .nav-drop-menu {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, 2px);
}

.nav-drop-menu a {
  display: block;
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 0.92rem;
  white-space: nowrap;
}

.nav-drop-menu a:hover {
  background: var(--color-bg);
  color: var(--color-primary);
}

/* 窄屏汉堡抽屉模式下：二级菜单平铺展开、缩进显示 */
@media (max-width: 1199px) {
  .nav-drop-menu {
    position: static;
    transform: none;
    opacity: 1;
    visibility: visible;
    box-shadow: none;
    border: none;
    background: transparent;
    padding: 0 0 0 18px;
    min-width: 0;
  }
  .nav-item-drop:hover .nav-drop-menu,
  .nav-item-drop:focus-within .nav-drop-menu {
    transform: none;
  }
  .nav-caret {
    display: none;
  }
}

/* 桌面导航放不下时（<1200px）折叠为汉堡菜单 */
@media (max-width: 1199px) {
  .nav-list {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--color-white);
    flex-direction: column;
    align-items: stretch;
    padding: 16px;
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-lg);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: all 0.3s ease;
  }

  .nav-list.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }

  .nav-list a {
    display: block;
    padding: 12px 16px;
    border-radius: 8px;
    font-size: 1rem;
    white-space: normal;
  }

  .header .mobile-menu-btn { display: flex; }
}

.nav-list a:hover,
.nav-list a.active {
  color: var(--color-accent);
  background: rgba(59, 130, 246, 0.08);
}

.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.mobile-menu-btn span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-dark);
  border-radius: 2px;
  transition: all 0.3s ease;
}

.mobile-menu-btn.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-btn.active span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* --- Hero Section --- */
.hero {
  position: relative;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 40%, var(--color-secondary) 100%);
  color: var(--color-white);
  padding: 100px 0 120px;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.15), transparent 70%);
  border-radius: 50%;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(96, 165, 250, 0.1), transparent 70%);
  border-radius: 50%;
}

.hero .container {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero-content h1 {
  color: var(--color-white);
  font-size: 3.2rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1.25rem;
  letter-spacing: -0.02em;
}

.hero-content h1 span {
  background: linear-gradient(135deg, #60a5fa, #93c5fd);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-content p {
  font-size: var(--font-size-lg);
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.8;
  margin-bottom: 2rem;
  max-width: 520px;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-card {
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-xl);
  padding: 48px 40px;
  text-align: center;
}

.hero-card-logo {
  width: 88px;
  height: 88px;
  margin: 0 auto 1.5rem;
  padding: 10px;
  background: rgba(255, 255, 255, 0.15);
  border: 2px solid rgba(255, 255, 255, 0.25);
  border-radius: 50%;
  object-fit: contain;
  display: block;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.hero-card h3 {
  color: var(--color-white);
  margin-bottom: 0.25rem;
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.hero-card .hero-card-subtitle {
  color: rgba(255, 255, 255, 0.85);
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  margin-bottom: 1.5rem;
}

.hero-stats {
  display: flex;
  gap: 32px;
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.hero-stat {
  text-align: center;
}

.hero-stat strong {
  display: block;
  font-size: var(--font-size-2xl);
  font-weight: 800;
  color: #60a5fa;
}

.hero-stat span {
  font-size: var(--font-size-xs);
  color: rgba(255, 255, 255, 0.6);
}

/* --- Service Cards --- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.service-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  text-align: center;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-accent-light));
  transform: scaleX(0);
  transition: transform 0.3s ease;
}

.service-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
  border-color: transparent;
}

.service-card:hover::before {
  transform: scaleX(1);
}

.service-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 1.25rem;
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(22, 87, 160, 0.1));
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
}

.service-card h3 {
  font-size: var(--font-size-lg);
  margin-bottom: 0.75rem;
  color: var(--color-dark);
}

.service-card p {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  line-height: 1.7;
}

/* --- Section Spacing --- */
.section {
  padding: 100px 0;
}

.section-gray {
  background: var(--color-bg);
}

.section-dark {
  background: var(--color-primary);
  color: var(--color-white);
}

/* --- About Section --- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-image {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.about-image-photo {
  display: block;
  max-width: 100%;
  max-height: 560px;
  width: auto;
  height: auto;
  object-fit: contain;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  transition: transform 0.4s ease, box-shadow 0.4s ease;
  margin: 0 auto;
}

.about-image-photo:hover {
  transform: translateY(-6px) scale(1.01);
  box-shadow: 0 30px 60px rgba(10, 45, 92, 0.25);
}

.about-image-placeholder {
  width: 100%;
  aspect-ratio: 4/3;
  background: linear-gradient(135deg, var(--color-bg-alt), var(--color-border));
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 5rem;
  color: var(--color-text-muted);
}

.about-image .experience-badge {
  position: absolute;
  bottom: -20px;
  left: -20px;
  background: linear-gradient(135deg, var(--color-accent), var(--color-secondary));
  color: var(--color-white);
  padding: 16px 22px;
  border-radius: var(--radius-md);
  text-align: center;
  box-shadow: var(--shadow-lg);
  z-index: 2;
}

.experience-badge strong {
  display: block;
  font-size: 2rem;
  font-weight: 800;
  line-height: 1;
}

.experience-badge span {
  font-size: var(--font-size-sm);
  opacity: 0.9;
}

.about-text h2 {
  text-align: left;
}

.about-text .tagline {
  font-size: var(--font-size-lg);
  color: var(--color-accent);
  font-weight: 600;
  margin-bottom: 1rem;
}

.about-text p {
  margin-bottom: 1.25rem;
  color: var(--color-text-light);
  line-height: 1.8;
}

.about-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 2rem;
}

.about-feature-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 500;
  color: var(--color-dark);
}

.about-feature-item .check-icon {
  width: 24px;
  height: 24px;
  background: rgba(16, 185, 129, 0.12);
  color: var(--color-success);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  flex-shrink: 0;
}

/* --- Why Choose Us --- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  transition: all 0.3s ease;
}

.feature-card:hover {
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.feature-card .feature-num {
  font-size: 3rem;
  font-weight: 800;
  color: rgba(59, 130, 246, 0.1);
  line-height: 1;
  margin-bottom: 0.5rem;
}

.feature-card h3 {
  margin-bottom: 0.75rem;
}

.feature-card p {
  color: var(--color-text-light);
  font-size: var(--font-size-sm);
  line-height: 1.7;
}

/* --- Promo Section --- */
.promo-section {
  background: linear-gradient(135deg, #f8fafc 0%, #eef4ff 100%);
  padding: 80px 0;
  position: relative;
  overflow: hidden;
}

.promo-section::before {
  content: '';
  position: absolute;
  top: -120px;
  right: -120px;
  width: 320px;
  height: 320px;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.12), transparent 70%);
  pointer-events: none;
}

.promo-section::after {
  content: '';
  position: absolute;
  bottom: -100px;
  left: -100px;
  width: 280px;
  height: 280px;
  background: radial-gradient(circle, rgba(22, 87, 160, 0.08), transparent 70%);
  pointer-events: none;
}

.promo-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
}

.promo-content {
  position: relative;
}

.promo-content .section-subtitle {
  margin-bottom: 0.75rem;
}

.promo-content h2 {
  font-size: 2.25rem;
  margin-bottom: 1rem;
  color: var(--color-primary);
  line-height: 1.3;
}

.promo-lead {
  color: var(--color-text-light);
  font-size: var(--font-size-base);
  line-height: 1.8;
  margin-bottom: 2rem;
}

.promo-list {
  list-style: none;
  padding: 0;
  margin: 0 0 2rem 0;
}

.promo-list li {
  display: flex;
  gap: 14px;
  margin-bottom: 1.25rem;
  align-items: flex-start;
}

.promo-check {
  width: 28px;
  height: 28px;
  background: linear-gradient(135deg, var(--color-accent), var(--color-secondary));
  color: var(--color-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 2px;
}

.promo-list strong {
  display: block;
  font-size: var(--font-size-base);
  color: var(--color-primary);
  margin-bottom: 4px;
}

.promo-list p {
  margin: 0;
  color: var(--color-text-light);
  font-size: var(--font-size-sm);
  line-height: 1.6;
}

.promo-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.promo-image {
  position: relative;
}

.promo-image img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 50px rgba(22, 87, 160, 0.18);
  transition: transform 0.4s ease, box-shadow 0.4s ease;
}

.promo-image:hover img {
  transform: translateY(-6px) rotate(-1deg);
  box-shadow: 0 28px 60px rgba(22, 87, 160, 0.25);
}

@media (max-width: 768px) {
  .promo-section { padding: 60px 0; }
  .promo-grid { grid-template-columns: 1fr; gap: 40px; }
  .promo-content h2 { font-size: 1.75rem; }
  .promo-image { order: -1; max-width: 360px; margin: 0 auto; }
}

/* --- CTA Section --- */
.cta-section {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  color: var(--color-white);
  text-align: center;
  padding: 80px 0;
}

.cta-section h2 {
  color: var(--color-white);
  margin-bottom: 1rem;
}

.cta-section p {
  color: rgba(255, 255, 255, 0.75);
  max-width: 600px;
  margin: 0 auto 2rem;
  font-size: var(--font-size-lg);
}

.cta-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* --- Page Banner --- */
.page-banner {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  color: var(--color-white);
  padding: 80px 0 60px;
  text-align: center;
}

.page-banner h1 {
  color: var(--color-white);
  font-size: var(--font-size-4xl);
  margin-bottom: 0.75rem;
}

.page-banner p {
  color: rgba(255, 255, 255, 0.75);
  font-size: var(--font-size-lg);
}

.breadcrumb {
  display: flex;
  justify-content: center;
  gap: 8px;
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.6);
  margin-top: 1.5rem;
}

.breadcrumb a {
  color: rgba(255, 255, 255, 0.8);
}

.breadcrumb a:hover {
  color: var(--color-white);
}

/* --- Services Detail Page --- */
.service-detail {
  padding: 80px 0;
}

.service-detail-card {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 48px;
  align-items: start;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 48px;
  margin-bottom: 32px;
  transition: box-shadow 0.3s ease;
}

.service-detail-card:hover {
  box-shadow: var(--shadow-lg);
}

.service-detail-icon {
  width: 100px;
  height: 100px;
  margin: 0 auto;
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.08), rgba(22, 87, 160, 0.08));
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
}

.service-detail-card h3 {
  margin-bottom: 1rem;
  font-size: var(--font-size-2xl);
}

.service-detail-card .service-desc {
  color: var(--color-text-light);
  line-height: 1.8;
  margin-bottom: 1.5rem;
}

.service-items {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.service-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  background: var(--color-bg);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-sm);
  color: var(--color-text);
  font-weight: 500;
}

.service-item .dot {
  width: 8px;
  height: 8px;
  background: var(--color-accent);
  border-radius: 50%;
  flex-shrink: 0;
}

/* --- Auxiliary Services --- */
.aux-services {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 3rem;
}

.aux-service-card {
  background: var(--color-bg);
  border-radius: var(--radius-md);
  padding: 32px 24px;
  text-align: center;
  transition: all 0.3s ease;
}

.aux-service-card:hover {
  background: var(--color-white);
  box-shadow: var(--shadow-md);
}

.aux-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.aux-service-card h4 {
  margin-bottom: 0.5rem;
}

.aux-service-card p {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  line-height: 1.6;
}

/* --- Contact Page --- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

.contact-info-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 40px;
  height: fit-content;
}

.contact-info-card h3 {
  margin-bottom: 1.5rem;
}

.contact-info-item {
  display: flex;
  gap: 16px;
  margin-bottom: 24px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--color-border);
}

.contact-info-item:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.contact-info-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(22, 87, 160, 0.1));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  flex-shrink: 0;
}

.contact-info-text h4 {
  font-size: var(--font-size-base);
  margin-bottom: 4px;
}

.contact-info-text p {
  color: var(--color-text-light);
  font-size: var(--font-size-sm);
}

.service-area {
  margin-top: 2rem;
  padding: 24px;
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.05), rgba(59, 130, 246, 0.02));
  border-radius: var(--radius-md);
  border: 1px solid rgba(59, 130, 246, 0.1);
}

.service-area h4 {
  color: var(--color-accent);
  margin-bottom: 12px;
  font-size: var(--font-size-base);
}

.service-area .area-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.area-tag {
  padding: 6px 16px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: 50px;
  font-size: var(--font-size-sm);
  color: var(--color-text);
  font-weight: 500;
}

.wechat-card {
  margin-top: 2rem;
  padding: 28px 24px;
  background: linear-gradient(135deg, #07c160 0%, #05a050 100%);
  border-radius: var(--radius-md);
  color: var(--color-white);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.wechat-card::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -30%;
  width: 220px;
  height: 220px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.15), transparent 70%);
  pointer-events: none;
}

.wechat-icon {
  font-size: 2rem;
  margin-bottom: 0.5rem;
  position: relative;
}

.wechat-card h4 {
  font-size: var(--font-size-lg);
  margin-bottom: 0.5rem;
  color: var(--color-white);
  position: relative;
}

.wechat-card > p {
  color: rgba(255, 255, 255, 0.92);
  font-size: var(--font-size-sm);
  margin-bottom: 1.25rem;
  position: relative;
}

.wechat-qr-wrapper {
  width: 200px;
  height: 200px;
  margin: 0 auto 1rem;
  background: var(--color-white);
  border-radius: var(--radius-md);
  padding: 12px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
  position: relative;
}

.wechat-qr-wrapper img {
  width: 100%;
  height: 100%;
  display: block;
  border-radius: 6px;
}

.wechat-tip {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.9);
  margin: 0;
  position: relative;
}

.wechat-tip strong {
  font-size: var(--font-size-base);
  color: var(--color-white);
  letter-spacing: 0.05em;
}

.contact-form-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 40px;
}

.contact-form-card h3 {
  margin-bottom: 0.5rem;
}

.contact-form-card .form-subtitle {
  color: var(--color-text-light);
  font-size: var(--font-size-sm);
  margin-bottom: 2rem;
}

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

.form-group label {
  display: block;
  font-weight: 600;
  font-size: var(--font-size-sm);
  color: var(--color-dark);
  margin-bottom: 8px;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 14px 16px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: var(--font-family);
  font-size: var(--font-size-sm);
  color: var(--color-text);
  transition: all 0.2s ease;
  background: var(--color-bg);
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--color-accent);
  background: var(--color-white);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

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

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

/* --- Footer --- */
.footer {
  background: var(--color-primary);
  color: rgba(255, 255, 255, 0.7);
  padding: 60px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand h3 {
  color: var(--color-white);
  font-size: var(--font-size-2xl);
  margin-bottom: 1rem;
}

.footer-brand p {
  font-size: var(--font-size-sm);
  line-height: 1.8;
  max-width: 280px;
}

.footer-nav h4 {
  color: var(--color-white);
  font-size: var(--font-size-base);
  margin-bottom: 1.25rem;
}

.footer-nav a {
  display: block;
  padding: 6px 0;
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.6);
  transition: color 0.2s ease;
}

.footer-nav a:hover {
  color: var(--color-white);
}

.footer-contact h4 {
  color: var(--color-white);
  font-size: var(--font-size-base);
  margin-bottom: 1.25rem;
}

.footer-contact p {
  font-size: var(--font-size-sm);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* news 子目录页面 footer 结构兼容 */
.footer-about h3 {
  color: var(--color-white);
  font-size: var(--font-size-2xl);
  margin-bottom: 1rem;
}

.footer-about p {
  font-size: var(--font-size-sm);
  line-height: 1.8;
  max-width: 280px;
}

.footer-links h4 {
  color: var(--color-white);
  font-size: var(--font-size-base);
  margin-bottom: 1.25rem;
}

.footer-links a {
  display: block;
  padding: 6px 0;
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.6);
  transition: color 0.2s ease;
}

.footer-links a:hover {
  color: var(--color-white);
}

.footer-bottom {
  text-align: center;
  padding: 24px 0;
  font-size: var(--font-size-xs);
  color: rgba(255, 255, 255, 0.4);
}

/* 备案徽章图标（盾牌+对勾），与备案号同行展示 */
.beian-badge {
  display: inline-block;
  width: 14px;
  height: 14px;
  margin-right: 5px;
  vertical-align: -2px;
  color: rgba(255, 255, 255, 0.85);
}

/* 警徽图标（备案号前），与文字垂直对齐 */
.police-badge {
  vertical-align: -3px;
  margin-right: 4px;
  display: inline-block;
}

/* --- Animations --- */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- Process Steps --- */
.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}

.process-step {
  position: relative;
  padding: 32px 20px;
}

.step-number {
  width: 48px;
  height: 48px;
  margin: 0 auto 1rem;
  background: linear-gradient(135deg, var(--color-accent), var(--color-secondary));
  color: var(--color-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: var(--font-size-lg);
}

.process-step h4 {
  margin-bottom: 0.5rem;
}

.process-step p {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
}

.process-step::after {
  content: '';
  position: absolute;
  top: 56px;
  right: -12px;
  width: 24px;
  height: 2px;
  background: var(--color-border);
}

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

/* --- Page About Features --- */
.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.value-card {
  text-align: center;
  padding: 40px 24px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: all 0.3s ease;
}

.value-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.value-icon {
  font-size: 3rem;
  margin-bottom: 1.25rem;
}

.value-card h3 {
  margin-bottom: 0.75rem;
  font-size: var(--font-size-lg);
}

.value-card p {
  color: var(--color-text-light);
  font-size: var(--font-size-sm);
  line-height: 1.7;
}

/* --- Responsive --- */
@media (max-width: 1024px) {
  :root {
    --font-size-5xl: 2.5rem;
    --font-size-4xl: 2rem;
  }

  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero .container { grid-template-columns: 1fr; text-align: center; }
  .hero-content p { margin: 0 auto 2rem; }
  .hero-buttons { justify-content: center; }
  .hero-visual { order: -1; }
  .hero-card { max-width: 360px; margin: 0 auto; }
  .about-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .service-detail-card { grid-template-columns: 1fr; padding: 32px; }
  .process-steps { grid-template-columns: repeat(2, 1fr); }
  .process-step::after { display: none; }
  .values-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  :root {
    --font-size-5xl: 2rem;
    --font-size-4xl: 1.75rem;
    --font-size-3xl: 1.5rem;
    --header-height: 60px;
  }

  .about-image-photo {
    max-height: 460px;
  }

  .about-image .experience-badge {
    top: 12px;
    left: 10px;
    padding: 12px 18px;
  }

  .experience-badge strong {
    font-size: 1.5rem;
  }

  .nav-list {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--color-white);
    flex-direction: column;
    padding: 16px;
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-lg);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: all 0.3s ease;
  }

  .nav-list.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }

  .mobile-menu-btn { display: flex; }

  .logo img { height: 40px; }
  .logo-text { font-size: var(--font-size-lg); }

  .hero { padding: 60px 0 80px; }
  .section { padding: 60px 0; }
  .cta-section { padding: 60px 24px; }

  .services-grid { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .form-row { grid-template-columns: 1fr; }
  .aux-services { grid-template-columns: 1fr; }
  .service-items { grid-template-columns: 1fr; }
  .values-grid { grid-template-columns: 1fr; }

  .about-features { grid-template-columns: 1fr; }
  .process-steps { grid-template-columns: 1fr; }

  .page-banner { padding: 60px 0 40px; }
  .page-banner h1 { font-size: 1.75rem; }
}

/* --- Cases Showcase --- */
.cases-preview-section { background: linear-gradient(135deg, var(--color-bg) 0%, var(--color-bg-alt) 100%); }

.cases-preview-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 48px;
}

.cases-preview-grid .case-preview-card:nth-child(5),
.cases-preview-grid .case-preview-card:nth-child(6) {
  display: none;
}

.case-preview-card {
  background: var(--color-white);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: all 0.3s ease;
  cursor: pointer;
}

.case-preview-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
}

.case-preview-image {
  position: relative;
  aspect-ratio: 4/3;
  overflow: hidden;
}

.case-preview-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.case-preview-card:hover .case-preview-image img {
  transform: scale(1.08);
}

.case-preview-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(10, 45, 92, 0.85), transparent);
  display: flex;
  align-items: flex-end;
  padding: 16px;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.case-preview-card:hover .case-preview-overlay {
  opacity: 1;
}

.case-preview-overlay span {
  color: white;
  font-size: var(--font-size-sm);
  font-weight: 500;
}

.case-preview-info {
  padding: 16px;
}

.case-preview-info h3 {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-dark);
  margin-bottom: 6px;
  line-height: 1.4;
}

.case-preview-info p {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
}

/* --- Cases Page --- */
/* 案例分类切换标签 */
.case-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  margin: 10px 0 30px;
}
.case-tab {
  padding: 10px 24px;
  border: 1.5px solid var(--color-border, #e5e7eb);
  background: var(--color-white, #fff);
  color: var(--color-text, #374151);
  border-radius: 50px;
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
}
.case-tab:hover {
  border-color: var(--color-primary, #1a56db);
  color: var(--color-primary, #1a56db);
}
.case-tab.active {
  background: var(--color-primary, #1a56db);
  border-color: var(--color-primary, #1a56db);
  color: #fff;
}
.case-loading {
  grid-column: 1 / -1;
  text-align: center;
  color: #6b7280;
  padding: 50px 0;
}

.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  padding: 0 0 60px;
}

.case-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
}

.case-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

.case-card-image {
  position: relative;
  aspect-ratio: 16/10;
  overflow: hidden;
  cursor: pointer;
}

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

.case-card:hover .case-card-image img {
  transform: scale(1.08);
}

.case-card-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  color: white;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: var(--font-size-xs);
  font-weight: 500;
}

.case-card-view {
  position: absolute;
  inset: 0;
  background: rgba(10, 45, 92, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.case-card:hover .case-card-view {
  opacity: 1;
}

.case-card-view span {
  color: white;
  font-size: var(--font-size-sm);
  font-weight: 500;
  padding: 8px 20px;
  border: 2px solid white;
  border-radius: 30px;
}

.case-card-content {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.case-card-content h3 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--color-dark);
  margin-bottom: 10px;
  line-height: 1.4;
}

.case-card-meta {
  display: flex;
  gap: 16px;
  margin-bottom: 12px;
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
}

.case-card-meta span {
  display: flex;
  align-items: center;
  gap: 6px;
}

.case-card-desc {
  font-size: var(--font-size-sm);
  color: var(--color-text);
  line-height: 1.6;
  flex: 1;
}

.case-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

.case-card-tag {
  font-size: var(--font-size-xs);
  color: var(--color-secondary);
  background: rgba(22, 87, 160, 0.08);
  padding: 4px 10px;
  border-radius: 20px;
}

/* --- PC Repair Cases --- */
.pc-repair-section {
  background: linear-gradient(180deg, #fafbff 0%, #ffffff 100%);
}

.pc-repair-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  padding: 60px 0 20px;
}

.pc-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  transition: all 0.35s ease;
  display: flex;
  flex-direction: column;
  cursor: pointer;
  position: relative;
}

.pc-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
  border-color: var(--color-accent);
}

.pc-card-media {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4 / 3;
  background: #1a1a1a;
}

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

.pc-card:hover .pc-card-media img {
  transform: scale(1.06);
}

.pc-card-media::after {
  content: '🔍';
  position: absolute;
  bottom: 12px;
  right: 12px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.92);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  opacity: 0;
  transform: scale(0.6);
  transition: all 0.3s ease;
}

.pc-card:hover .pc-card-media::after {
  opacity: 1;
  transform: scale(1);
}

.pc-card-body {
  padding: 20px 22px 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.pc-tag {
  display: inline-block;
  font-size: var(--font-size-xs);
  color: var(--color-accent);
  background: rgba(59, 130, 246, 0.1);
  padding: 4px 12px;
  border-radius: 20px;
  margin-bottom: 0.75rem;
  font-weight: 600;
  align-self: flex-start;
}

.pc-card h3 {
  font-size: var(--font-size-base);
  color: var(--color-primary);
  margin-bottom: 0.5rem;
  line-height: 1.4;
}

.pc-card p {
  color: var(--color-text-light);
  font-size: var(--font-size-sm);
  line-height: 1.6;
  margin: 0;
}

@media (max-width: 1024px) {
  .pc-repair-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 768px) {
  .pc-repair-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; padding: 40px 0 0; }
}
@media (max-width: 480px) {
  .pc-repair-grid { grid-template-columns: 1fr; }
}

/* --- Lightbox --- */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: none;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  color: var(--color-white);
  font-size: 1.5rem;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 8px 24px rgba(22, 87, 160, 0.3);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px) scale(0.85);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 998;
}

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

.back-to-top:hover {
  transform: translateY(-4px) scale(1.05);
  box-shadow: 0 12px 30px rgba(22, 87, 160, 0.45);
}

@media (max-width: 768px) {
  .back-to-top { bottom: 20px; right: 20px; width: 44px; height: 44px; font-size: 1.25rem; }
}

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 10000;
  background: rgba(15, 23, 42, 0.95);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
  padding: 40px;
}

.lightbox.active {
  opacity: 1;
  pointer-events: all;
}

.lightbox-content {
  position: relative;
  max-width: 100%;
  max-height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.lightbox-image {
  max-width: 90vw;
  max-height: 80vh;
  object-fit: contain;
  border-radius: var(--radius-md);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

.lightbox-caption {
  color: white;
  text-align: center;
  margin-top: 16px;
  font-size: var(--font-size-base);
  max-width: 800px;
}

.lightbox-close,
.lightbox-prev,
.lightbox-next {
  position: absolute;
  background: rgba(255, 255, 255, 0.15);
  border: none;
  color: white;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  transition: all 0.2s ease;
  backdrop-filter: blur(4px);
}

.lightbox-close:hover,
.lightbox-prev:hover,
.lightbox-next:hover {
  background: rgba(255, 255, 255, 0.3);
  transform: scale(1.1);
}

.lightbox-close {
  top: 20px;
  right: 20px;
  z-index: 10;
}

.lightbox-prev { left: 20px; top: 50%; transform: translateY(-50%); }
.lightbox-next { right: 20px; top: 50%; transform: translateY(-50%); }
.lightbox-prev:hover, .lightbox-next:hover { transform: translateY(-50%) scale(1.1); }

.lightbox-counter {
  position: absolute;
  top: 24px;
  left: 50%;
  transform: translateX(-50%);
  color: rgba(255, 255, 255, 0.8);
  font-size: var(--font-size-sm);
  background: rgba(0, 0, 0, 0.3);
  padding: 6px 16px;
  border-radius: 20px;
}

@media (max-width: 1024px) {
  .cases-grid { grid-template-columns: repeat(2, 1fr); }
  .cases-preview-grid { grid-template-columns: repeat(2, 1fr); }
  .cases-preview-grid .case-preview-card:nth-child(5),
  .cases-preview-grid .case-preview-card:nth-child(6) { display: block; }
}

@media (max-width: 768px) {
  .cases-grid { grid-template-columns: 1fr; gap: 24px; padding: 40px 0; }
  .cases-preview-grid { grid-template-columns: 1fr; }
  .case-card-content { padding: 20px; }
  .lightbox { padding: 20px; }
  .lightbox-prev { left: 10px; }
  .lightbox-next { right: 10px; }
  .lightbox-close { top: 10px; right: 10px; }
}

/* ============================================================
   2026-09-29 优化：顶部电话 + 移动端吸底拨号条
   （对标竞品 yjzjwx.cn：电话在首屏最醒目处、移动端一键直拨）
   ============================================================ */

/* 头部 nav 改为 flex 行布局：导航链接与电话胶囊同排、垂直居中
   （nav 默认块级会导致 .nav-list 与 .header-phone 换行堆叠、胶囊溢出 header） */
.header nav {
  display: flex;
  align-items: center;
}

/* 头部常驻电话（桌面端） */
.header-phone {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-left: 18px;
  padding: 6px 20px;
  background: linear-gradient(135deg, var(--color-accent), var(--color-secondary));
  color: #fff !important;
  font-weight: 700;
  font-size: 1rem;
  line-height: 1.15;
  border-radius: 50px;
  white-space: nowrap;
  box-shadow: 0 4px 14px rgba(59, 130, 246, 0.35);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  text-decoration: none;
}
.header-phone:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 22px rgba(59, 130, 246, 0.45);
  color: #fff;
  text-decoration: none;
}
.header-phone .hp-ico { font-size: 1.05rem; line-height: 1; }
.header-phone .hp-num { letter-spacing: 0.02em; }

/* 移动端隐藏头部电话，改用底部吸底拨号条 */
@media (max-width: 767px) {
  .header-phone { display: none; }
}

/* 移动端吸底拨号条 */
.mobile-callbar { display: none; }
@media (max-width: 767px) {
  body { padding-bottom: 66px; }   /* 给吸底条留位，避免遮挡页脚 */
  .mobile-callbar {
    display: flex;
    position: fixed;
    left: 0; right: 0; bottom: 0;
    z-index: 1200;
    gap: 10px;
    padding: 8px 12px calc(8px + env(safe-area-inset-bottom));
    background: #fff;
    border-top: 1px solid var(--color-border);
    box-shadow: 0 -4px 18px rgba(0, 0, 0, 0.12);
  }
  .mobile-callbar a {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 7px;
    padding: 13px 8px;
    border-radius: 12px;
    font-weight: 700;
    font-size: 1.02rem;
    text-decoration: none;
    line-height: 1;
  }
  .mobile-callbar .cb-call {
    background: linear-gradient(135deg, var(--color-accent), var(--color-secondary));
    color: #fff;
    box-shadow: 0 4px 14px rgba(59, 130, 246, 0.4);
  }
  .mobile-callbar .cb-wechat { background: #07c160; color: #fff; }
  .mobile-callbar .cb-ico { font-size: 1.15rem; }
}

/* ============================================================
   2026-09-29 首页「服务范围一览」区块
   （对标竞品 yjzjwx.cn：业务范围 + 联系方式地址 一目了然）
   ============================================================ */
.scope-section { background: var(--color-white); }
.scope-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(248px, 1fr));
  gap: 18px;
  margin-top: 2.2rem;
}
.scope-item {
  display: flex;
  gap: 14px;
  padding: 20px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}
.scope-item:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-accent);
}
.scope-ico {
  flex: 0 0 46px;
  width: 46px; height: 46px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem;
  background: linear-gradient(135deg, var(--color-accent), var(--color-secondary));
  color: #fff;
  border-radius: 12px;
}
.scope-body h3 {
  font-size: 1.12rem;
  margin: 0 0 6px;
  color: var(--color-primary);
}
.scope-body p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.6;
}
.scope-areas {
  margin-top: 2.2rem;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
}
.scope-area-tag {
  padding: 8px 18px;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: 50px;
  font-size: 0.92rem;
  color: var(--color-text);
  font-weight: 600;
}
.scope-contact {
  margin-top: 2.4rem;
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: center;
  align-items: center;
  padding: 20px 24px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  border-radius: var(--radius-lg);
  color: #fff;
}
.scope-contact a, .scope-contact span {
  color: #fff;
  text-decoration: none;
  font-weight: 700;
  font-size: 1.02rem;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.scope-contact .sc-sep { opacity: 0.4; font-weight: 400; }
.scope-contact .sc-btn {
  background: var(--color-accent);
  padding: 10px 22px;
  border-radius: 50px;
  box-shadow: 0 4px 14px rgba(59,130,246,0.45);
}
@media (max-width: 768px) {
  .scope-grid { grid-template-columns: 1fr 1fr; }
  .scope-item { flex-direction: column; gap: 8px; padding: 16px; }
  .scope-ico { flex-basis: 42px; width: 42px; height: 42px; font-size: 1.2rem; }
  .scope-body h3 { font-size: 1rem; }
  .scope-body p { font-size: 0.82rem; }
  .scope-contact { flex-direction: column; }
  .scope-contact .sc-sep { display: none; }
}

/* ==================== 2026-09-29 转化钩子文案 ==================== */

/* 头部电话胶囊：号码下方补一行「免费上门勘测」钩子 */
.header-phone {
  flex-wrap: wrap;
  justify-content: center;
  row-gap: 0;
}
.header-phone .hp-tip {
  flex-basis: 100%;
  text-align: center;
  font-size: 0.66rem;
  font-weight: 500;
  line-height: 1.1;
  letter-spacing: 0.02em;
  opacity: 0.95;
}
/* 中等宽度先收起钩子，优先保证导航不换行 */
@media (max-width: 1180px) {
  .header-phone .hp-tip { display: none; }
}

/* 移动端吸底条：钩子文案 + 号码两行排布 */
@media (max-width: 767px) {
  body { padding-bottom: 78px; }
  .mobile-callbar .cb-txt {
    display: flex;
    flex-direction: column;
    align-items: center;
    line-height: 1.15;
  }
  .mobile-callbar .cb-txt b { font-size: 0.95rem; font-weight: 700; }
  .mobile-callbar .cb-txt i {
    font-style: normal;
    font-size: 0.72rem;
    font-weight: 500;
    opacity: 0.9;
  }
}