/* ========================================
   苏州验车网 v2 - 现代化设计系统
   ======================================== */

:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-light: #dbeafe;
  --primary-soft: #eff6ff;
  --secondary: #0ea5e9;
  --accent: #f59e0b;
  --accent-dark: #d97706;
  --success: #10b981;
  --success-light: #d1fae5;
  --warning: #f59e0b;
  --warning-light: #fef3c7;
  --danger: #ef4444;
  --danger-light: #fee2e2;
  --dark: #0f172a;
  --text: #1f2937;
  --text-muted: #6b7280;
  --text-light: #9ca3af;
  --bg: #f8fafc;
  --card: #ffffff;
  --border: #e5e7eb;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-md: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  --radius-sm: 0.5rem;
  --radius: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --max-width: 900px;
  --nav-height: 64px;
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  line-height: 1.7;
  color: var(--text);
  background-color: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

a:hover {
  color: var(--primary-dark);
}

/* 顶部导航 */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  height: var(--nav-height);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--border);
}

.navbar-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.25rem;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--dark);
}

.brand-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: var(--radius);
  display: grid;
  place-items: center;
  color: white;
  font-size: 1.1rem;
  box-shadow: var(--shadow);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-menu a {
  display: block;
  padding: 0.5rem 0.85rem;
  border-radius: 999px;
  color: var(--text-muted);
  font-size: 0.95rem;
  font-weight: 500;
}

.nav-menu a:hover,
.nav-menu a.active {
  color: var(--primary);
  background: var(--primary-soft);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 1rem;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white !important;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.9rem;
  box-shadow: var(--shadow);
}

.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.hamburger {
  display: none;
  width: 40px;
  height: 40px;
  border: none;
  background: transparent;
  cursor: pointer;
  border-radius: var(--radius);
}

.hamburger:hover {
  background: var(--primary-soft);
}

.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  margin: 5px auto;
  background: var(--text);
  border-radius: 2px;
  transition: var(--transition);
}

.hamburger.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Hero 区域 */
.hero {
  position: relative;
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  color: white;
  padding: 4rem 1.25rem 5rem;
  text-align: center;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 20% 30%, rgba(255,255,255,0.15) 0%, transparent 40%),
              radial-gradient(circle at 80% 70%, rgba(255,255,255,0.1) 0%, transparent 40%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  max-width: var(--max-width);
  margin: 0 auto;
}

.hero h1 {
  margin: 0 0 1rem;
  font-size: clamp(2rem, 6vw, 3rem);
  font-weight: 800;
  line-height: 1.2;
  text-shadow: 0 2px 10px rgba(0,0,0,0.15);
}

.hero p {
  margin: 0 auto 2rem;
  max-width: 640px;
  font-size: clamp(1.05rem, 2.5vw, 1.25rem);
  opacity: 0.95;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
}

/* 通用按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.6rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 1rem;
  border: none;
  cursor: pointer;
  transition: var(--transition);
}

.btn-primary {
  background: white;
  color: var(--primary);
  box-shadow: var(--shadow-md);
}

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

.btn-accent {
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: white;
  box-shadow: 0 4px 14px rgba(245, 158, 11, 0.35);
}

.btn-accent:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(245, 158, 11, 0.45);
  color: white;
}

.btn-outline {
  background: rgba(255,255,255,0.15);
  color: white;
  border: 1px solid rgba(255,255,255,0.4);
}

.btn-outline:hover {
  background: rgba(255,255,255,0.25);
  color: white;
}

/* 页面标题头部（内页） */
.page-header {
  position: relative;
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  color: white;
  padding: 3rem 1.25rem 3.5rem;
  text-align: center;
}

.page-header::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 80% 20%, rgba(255,255,255,0.12) 0%, transparent 35%);
  pointer-events: none;
}

.page-header-inner {
  position: relative;
  max-width: var(--max-width);
  margin: 0 auto;
}

.page-header h1 {
  margin: 0 0 0.75rem;
  font-size: clamp(1.6rem, 5vw, 2.4rem);
  font-weight: 800;
}

.page-header p {
  margin: 0;
  opacity: 0.92;
  font-size: 1.1rem;
}

/* 面包屑 */
.breadcrumb {
  max-width: var(--max-width);
  margin: 1.25rem auto 0;
  padding: 0 1.25rem;
  font-size: 0.875rem;
  color: var(--text-light);
}

.breadcrumb a {
  color: var(--text-muted);
}

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

.breadcrumb span + span::before {
  content: "/";
  margin: 0 0.5rem;
  color: var(--border);
}

/* 主容器 */
.main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2rem 1.25rem 3rem;
}

.section {
  margin-bottom: 3rem;
}

.section-title {
  font-size: 1.6rem;
  font-weight: 800;
  margin: 0 0 1.25rem;
  color: var(--dark);
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.section-title .icon {
  color: var(--primary);
}

.lead {
  font-size: 1.1rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

/* 卡片网格 */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
}

.card {
  background: var(--card);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  transition: var(--transition);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary-light);
}

.card-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius);
  display: grid;
  place-items: center;
  font-size: 1.4rem;
  margin-bottom: 1rem;
  background: var(--primary-soft);
  color: var(--primary);
}

.card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.15rem;
  color: var(--dark);
}

.card p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

.card-link {
  display: block;
  color: inherit;
}

.card-link:hover {
  color: inherit;
}

/* 服务特色 */
.feature-list {
  display: grid;
  gap: 1rem;
}

.feature-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  background: var(--card);
  padding: 1.25rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
}

.feature-check {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
  border-radius: 50%;
  background: var(--success-light);
  color: var(--success);
  display: grid;
  place-items: center;
  font-size: 0.85rem;
  margin-top: 0.1rem;
}

.feature-item strong {
  display: block;
  color: var(--dark);
  margin-bottom: 0.2rem;
}

.feature-item span {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* 提示框 */
.box {
  border-radius: var(--radius);
  padding: 1.25rem;
  margin: 1.25rem 0;
}

.box-info {
  background: var(--primary-soft);
  border-left: 4px solid var(--primary);
}

.box-success {
  background: var(--success-light);
  border-left: 4px solid var(--success);
}

.box-warning {
  background: var(--warning-light);
  border-left: 4px solid var(--warning);
}

.box-danger {
  background: var(--danger-light);
  border-left: 4px solid var(--danger);
}

.box h3, .box h4 {
  margin: 0 0 0.75rem;
  color: var(--dark);
}

.box p:last-child,
.box ul:last-child,
.box ol:last-child {
  margin-bottom: 0;
}

.box ul, .box ol {
  padding-left: 1.25rem;
  margin: 0.5rem 0;
}

.box li {
  margin-bottom: 0.4rem;
}

/* CTA 联系条 */
.cta-bar {
  background: linear-gradient(135deg, var(--primary-soft) 0%, #fff 100%);
  border: 1px solid var(--primary-light);
  border-radius: var(--radius-lg);
  padding: 2rem;
  text-align: center;
  margin: 2rem 0;
  position: relative;
  overflow: hidden;
}

.cta-bar::before {
  content: "";
  position: absolute;
  top: -50%;
  right: -10%;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, var(--primary-light) 0%, transparent 70%);
  opacity: 0.6;
}

.cta-bar h3 {
  margin: 0 0 0.75rem;
  color: var(--dark);
  font-size: 1.3rem;
}

.cta-bar p {
  color: var(--text-muted);
  margin: 0 0 1rem;
}

.phone-big {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 2rem;
  font-weight: 800;
  color: var(--primary);
  margin: 0.5rem 0;
}

.wechat-big {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--success);
}

.cta-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
  margin-top: 1rem;
}

.cta-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.35rem 0.85rem;
  background: white;
  border-radius: 999px;
  font-size: 0.875rem;
  color: var(--text-muted);
  box-shadow: var(--shadow-sm);
}

/* 底部导航按钮 */
.nav-buttons {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}

.nav-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.75rem 1.25rem;
  border-radius: 999px;
  font-weight: 600;
  background: var(--primary);
  color: white;
  box-shadow: var(--shadow);
}

.nav-btn:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
  color: white;
}

.nav-btn.secondary {
  background: white;
  color: var(--text);
  border: 1px solid var(--border);
}

.nav-btn.secondary:hover {
  background: var(--bg);
  color: var(--primary);
}

/* 文章列表 */
.article-list {
  display: grid;
  gap: 1rem;
}

.article-card {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.article-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
  border-color: var(--primary-light);
}

.article-card h3 {
  margin: 0;
  font-size: 1.1rem;
  color: var(--dark);
}

.article-card h3 a {
  color: inherit;
}

.article-card h3 a:hover {
  color: var(--primary);
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.85rem;
  color: var(--text-light);
}

.article-category {
  padding: 0.15rem 0.6rem;
  background: var(--primary-soft);
  color: var(--primary);
  border-radius: 999px;
  font-weight: 500;
}

.article-summary {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

.read-more {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-weight: 600;
  font-size: 0.9rem;
}

.empty-state {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--text-muted);
}

/* 文章搜索 */
.search-box {
  position: relative;
  margin: 1.5rem 0;
}

.search-box i {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-light);
}

.search-box input {
  width: 100%;
  padding: 0.9rem 1rem 0.9rem 2.8rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 1rem;
  background: var(--card);
  color: var(--text);
  transition: var(--transition);
}

.search-box input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
}

.search-status {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.article-card.hidden {
  display: none;
}

/* FAQ */
.faq-categories {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: 1.5rem;
}

.category-btn {
  padding: 0.5rem 1rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: white;
  color: var(--text-muted);
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
}

.category-btn:hover,
.category-btn.active {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

.faq-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 0.75rem;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.1rem 1.25rem;
  background: none;
  border: none;
  text-align: left;
  font-size: 1rem;
  font-weight: 600;
  color: var(--dark);
  cursor: pointer;
}

.faq-question:hover {
  background: var(--primary-soft);
}

.faq-question .q-icon {
  color: var(--primary);
  margin-right: 0.5rem;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.faq-answer-inner {
  padding: 0 1.25rem 1.25rem;
  color: var(--text-muted);
  line-height: 1.7;
}

.faq-answer.active {
  max-height: 600px;
}

.faq-item.active {
  border-color: var(--primary-light);
}

/* 流程步骤时间线 */
.process-steps {
  position: relative;
  margin: 2rem 0;
}

.process-steps::before {
  content: "";
  position: absolute;
  left: 26px;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(to bottom, var(--primary), var(--secondary));
  border-radius: 3px;
}

.step {
  position: relative;
  padding: 0 0 2rem 70px;
}

.step:last-child {
  padding-bottom: 0;
}

.step-number {
  position: absolute;
  left: 0;
  top: 0;
  width: 54px;
  height: 54px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: white;
  display: grid;
  place-items: center;
  font-size: 1.3rem;
  font-weight: 800;
  box-shadow: var(--shadow-md);
  z-index: 1;
}

.step-body {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
}

.step-body h3 {
  margin: 0 0 0.75rem;
  color: var(--dark);
  font-size: 1.2rem;
}

.step-body ul {
  margin: 0.5rem 0;
  padding-left: 1.25rem;
}

.step-body li {
  margin-bottom: 0.4rem;
}

/* 价格表 */
.price-table-wrap {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  margin: 1.5rem 0;
}

.price-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--card);
  min-width: 600px;
}

.price-table th {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white;
  padding: 1rem 1.25rem;
  text-align: left;
  font-weight: 600;
}

.price-table td {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border);
}

.price-table tr:nth-child(even) {
  background: var(--bg);
}

.price-table tr:hover {
  background: var(--primary-soft);
}

.price-highlight {
  color: var(--danger);
  font-weight: 800;
  font-size: 1.1rem;
}

/* 联系方式卡片 */
.contact-methods {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.25rem;
  margin: 1.5rem 0;
}

.contact-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem 1.5rem;
  text-align: center;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.contact-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.contact-card i {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 1.6rem;
  margin: 0 auto 1rem;
  background: var(--primary-soft);
  color: var(--primary);
}

.contact-card h3 {
  margin: 0 0 0.5rem;
  color: var(--dark);
}

.contact-card p {
  margin: 0.35rem 0;
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* 文章内容 */
.article-content {
  font-size: 1.05rem;
  line-height: 1.9;
}

.article-content h2 {
  font-size: 1.4rem;
  color: var(--dark);
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--primary-light);
}

.article-content h3 {
  font-size: 1.15rem;
  color: var(--primary);
  margin-top: 1.75rem;
  margin-bottom: 0.75rem;
}

.article-content p {
  margin: 1rem 0;
  text-align: justify;
}

.article-content ul,
.article-content ol {
  padding-left: 1.5rem;
  margin: 1rem 0;
}

.article-content li {
  margin-bottom: 0.5rem;
}

.article-content strong {
  color: var(--primary-dark);
}

.article-content img {
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  margin: 1.5rem 0;
}

/* 页脚 */
.footer {
  background: var(--dark);
  color: rgba(255,255,255,0.7);
  padding: 3rem 1.25rem 2rem;
  margin-top: 2rem;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  text-align: center;
}

.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 800;
  font-size: 1.25rem;
  color: white;
  margin-bottom: 1rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
  margin: 1rem 0;
}

.footer-links a {
  color: rgba(255,255,255,0.7);
}

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

.footer-contact {
  margin: 1rem 0;
  font-size: 1.1rem;
}

.footer-contact strong {
  color: white;
}

.footer-copy {
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255,255,255,0.1);
  font-size: 0.85rem;
  color: rgba(255,255,255,0.5);
}

/* 回到顶部 */
.back-to-top {
  position: fixed;
  right: 1.25rem;
  bottom: 1.25rem;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--card);
  color: var(--primary);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-md);
  display: grid;
  place-items: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: var(--transition);
  z-index: 999;
}

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

.back-to-top:hover {
  background: var(--primary);
  color: white;
  transform: translateY(-2px);
}

/* 入场动画 */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* 小部件 */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.25rem 0.7rem;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 600;
}

.badge-primary {
  background: var(--primary-soft);
  color: var(--primary);
}

.badge-success {
  background: var(--success-light);
  color: var(--success);
}

/* 首页特有 */
.hero-stats {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 2rem;
  margin-top: 2.5rem;
}

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

.hero-stat strong {
  display: block;
  font-size: 1.8rem;
  font-weight: 800;
}

.hero-stat span {
  font-size: 0.9rem;
  opacity: 0.9;
}

/* 移动端适配 */
@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: rgba(255,255,255,0.98);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    align-items: stretch;
    padding: 1rem;
    gap: 0.5rem;
    transform: translateY(-120%);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    box-shadow: var(--shadow-lg);
  }

  .nav-menu.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav-menu a,
  .nav-cta {
    width: 100%;
    text-align: center;
    justify-content: center;
  }

  .hamburger {
    display: block;
  }

  .hero {
    padding: 3rem 1rem 4rem;
  }

  .page-header {
    padding: 2.5rem 1rem 3rem;
  }

  .main {
    padding: 1.5rem 1rem 2rem;
  }

  .card-grid {
    grid-template-columns: 1fr;
  }

  .nav-buttons {
    flex-direction: column;
  }

  .process-steps::before {
    left: 20px;
  }

  .step {
    padding-left: 58px;
  }

  .step-number {
    width: 44px;
    height: 44px;
    font-size: 1.1rem;
  }

  .phone-big {
    font-size: 1.6rem;
  }

  .cta-bar {
    padding: 1.5rem 1rem;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 1.75rem;
  }

  .section-title {
    font-size: 1.35rem;
  }

  .btn {
    width: 100%;
  }

  .hero-actions {
    flex-direction: column;
  }
}

/* 打印优化 */
@media print {
  .navbar, .back-to-top, .nav-buttons, .hamburger {
    display: none !important;
  }

  body {
    background: white;
  }

  .hero, .page-header {
    color: black;
    background: white;
    padding: 1rem 0;
  }

  .main {
    padding: 0;
  }
}