/* 全局样式 */
:root {
  /* 配色方案 */
  --canvas-bg: #fcfcfc;
  --sky-blue: #f0f4fe;
  --midnight-blue: #020520;
  --graphite-gray: #14141e;
  --slate-gray: #374151;
  --fog-gray: #696a72;
  --deep-fog-gray: #95959b;
  --steel-gray: #6b7280;
  --signal-blue: #145aff;
  --primary-action: #0f1f3d;
  --emerald-green: #16ca2e;
  --coral-red: #f26052;
  --sky-info: #0099ff;
  --amber-tag: #ffa64d;

  /* 字体 */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'Roboto Mono', 'JetBrains Mono', monospace;

  /* 阴影 */
  --shadow-sm: rgba(0, 0, 0, 0.1) 0px 0px 4px -2px;
  --shadow-md: rgba(0, 0, 0, 0.25) 0px 0px 4px -2px;
  --shadow-card: rgba(0, 0, 0, 0.082) 0px 0.36px 1.81px -1.42px, rgba(0, 0, 0, 0.07) 0px 1.37px 6.87px -2.83px, rgba(0, 0, 0, 0.016) 0px 6px 30px -4.25px;
  --shadow-blue-glow: rgba(20, 90, 255, 0.1) 0px 0px 50px -28px, rgba(0, 0, 0, 0.18) 0px 0px 3px -1px;

  /* 间距 */
  --section-gap: 80px;
  --element-gap: 12px;
  --max-width: 1200px;

  /* 圆角 */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-2xl: 32px;
  --radius-3xl: 40px;
  --radius-pill: 100px;
}

/* 重置样式 */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-family);
  font-weight: 400;
  line-height: 1.5;
  color: var(--graphite-gray);
  background-color: var(--canvas-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

ul, ol {
  list-style: none;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
}

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

/* 导航栏 */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(252, 252, 252, 0.9);
  backdrop-filter: blur(2px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
  transition: all 0.3s ease;
}

.navbar.scrolled {
  box-shadow: var(--shadow-sm);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.navbar-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 600;
  color: var(--midnight-blue);
}

.navbar-logo .logo-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--signal-blue), var(--primary-action));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 700;
  font-size: 18px;
}

.navbar-menu {
  display: flex;
  align-items: center;
  gap: 8px;
}

.navbar-menu a {
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 400;
  color: var(--slate-gray);
  border-radius: var(--radius-pill);
  transition: all 0.2s ease;
}

.navbar-menu a:hover,
.navbar-menu a.active {
  background: var(--sky-blue);
  color: var(--primary-action);
}

.navbar-cta {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* 按钮样式 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  font-size: 14px;
  font-weight: 500;
  border-radius: var(--radius-lg);
  transition: all 0.2s ease;
  white-space: nowrap;
}

.btn-outline {
  background: rgba(255, 255, 255, 0.8);
  color: var(--primary-action);
  border: 1px solid var(--primary-action);
}

.btn-outline:hover {
  background: var(--primary-action);
  color: white;
}

.btn-primary {
  background: linear-gradient(rgb(59, 130, 246) 0%, rgb(20, 90, 255) 100%);
  color: white;
  border: 1px solid transparent;
}

.btn-primary:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

.btn-ghost {
  background: var(--canvas-bg);
  color: var(--signal-blue);
  border: 1px solid rgba(20, 90, 255, 0.3);
}

.btn-ghost:hover {
  background: var(--sky-blue);
}

.btn-lg {
  padding: 15px 32px;
  font-size: 16px;
  font-weight: 600;
}

.btn-sm {
  padding: 8px 16px;
  font-size: 13px;
}

/* 英雄区 */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 120px 0 80px;
  background: radial-gradient(97.8% 181.6% at 53.7% 50%, rgb(20, 20, 30) 0%, rgba(88, 107, 141, 0.8) 100%);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 50% 50%, rgba(20, 90, 255, 0.1) 0%, transparent 50%);
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-pill);
  font-size: 13px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 24px;
  backdrop-filter: blur(10px);
}

.hero-badge i {
  color: var(--signal-blue);
}

.hero h1 {
  font-size: 56px;
  font-weight: 600;
  line-height: 1.05;
  letter-spacing: -1.51px;
  color: white;
  margin-bottom: 20px;
}

.hero p {
  font-size: 18px;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 40px;
}

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

.hero-visual {
  position: relative;
  margin-top: 60px;
  max-width: 1000px;
  margin-left: auto;
  margin-right: auto;
}

.hero-screenshot {
  background: var(--canvas-bg);
  border-radius: var(--radius-3xl);
  padding: 20px;
  box-shadow: var(--shadow-card);
}

.hero-screenshot-inner {
  background: white;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

/* 区块通用样式 */
.section {
  padding: var(--section-gap) 0;
}

.section-alt {
  background: var(--sky-blue);
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 60px;
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 500;
  color: var(--signal-blue);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 16px;
}

.section-label i {
  font-size: 14px;
}

.section-title {
  font-size: 40px;
  font-weight: 600;
  line-height: 1.08;
  letter-spacing: -0.76px;
  color: var(--midnight-blue);
  margin-bottom: 16px;
}

.section-desc {
  font-size: 16px;
  line-height: 1.6;
  color: var(--fog-gray);
}

/* 特性网格 */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background: white;
  border-radius: var(--radius-2xl);
  padding: 32px;
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
}

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

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  margin-bottom: 20px;
}

.feature-icon.blue {
  background: rgba(20, 90, 255, 0.1);
  color: var(--signal-blue);
}

.feature-icon.green {
  background: rgba(22, 202, 46, 0.1);
  color: var(--emerald-green);
}

.feature-icon.orange {
  background: rgba(255, 166, 77, 0.1);
  color: var(--amber-tag);
}

.feature-icon.red {
  background: rgba(242, 96, 82, 0.1);
  color: var(--coral-red);
}

.feature-card h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--graphite-gray);
  margin-bottom: 12px;
}

.feature-card p {
  font-size: 14px;
  line-height: 1.6;
  color: var(--fog-gray);
}

/* 产品卡片 */
.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.product-card {
  background: white;
  border-radius: var(--radius-3xl);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: all 0.3s ease;
}

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

.product-image {
  position: relative;
  height: 200px;
  background: var(--sky-blue);
  overflow: hidden;
}

.product-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.product-image-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 48px;
  color: var(--signal-blue);
  opacity: 0.3;
}

.product-content {
  padding: 24px;
}

.product-tag {
  display: inline-block;
  padding: 4px 10px;
  background: var(--sky-blue);
  color: var(--signal-blue);
  font-size: 12px;
  font-weight: 500;
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
}

.product-card h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--graphite-gray);
  margin-bottom: 8px;
}

.product-card p {
  font-size: 14px;
  line-height: 1.6;
  color: var(--fog-gray);
  margin-bottom: 20px;
}

.product-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 500;
  color: var(--primary-action);
  transition: all 0.2s ease;
}

.product-link:hover {
  color: var(--signal-blue);
  gap: 10px;
}

/* 案例卡片 */
.cases-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.case-card {
  background: white;
  border-radius: var(--radius-3xl);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: all 0.3s ease;
}

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

.case-image {
  height: 240px;
  background: var(--sky-blue);
  overflow: hidden;
}

.case-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.case-image-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 64px;
  color: var(--signal-blue);
  opacity: 0.2;
}

.case-content {
  padding: 24px;
}

.case-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.case-category {
  padding: 4px 10px;
  background: var(--sky-blue);
  color: var(--signal-blue);
  font-size: 12px;
  font-weight: 500;
  border-radius: var(--radius-sm);
}

.case-date {
  font-size: 12px;
  color: var(--deep-fog-gray);
}

.case-card h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--graphite-gray);
  margin-bottom: 12px;
}

.case-card p {
  font-size: 14px;
  line-height: 1.6;
  color: var(--fog-gray);
  margin-bottom: 20px;
}

/* 新闻卡片 */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.news-card {
  background: white;
  border-radius: var(--radius-3xl);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: all 0.3s ease;
}

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

.news-image {
  height: 180px;
  background: var(--sky-blue);
  overflow: hidden;
}

.news-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.news-image-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 48px;
  color: var(--signal-blue);
  opacity: 0.2;
}

.news-content {
  padding: 24px;
}

.news-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.news-category {
  padding: 4px 10px;
  background: var(--sky-blue);
  color: var(--signal-blue);
  font-size: 12px;
  font-weight: 500;
  border-radius: var(--radius-sm);
}

.news-date {
  font-size: 12px;
  color: var(--deep-fog-gray);
}

.news-card h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--graphite-gray);
  margin-bottom: 8px;
  line-height: 1.4;
}

.news-card p {
  font-size: 14px;
  line-height: 1.6;
  color: var(--fog-gray);
  margin-bottom: 20px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* 客户 Logo */
.clients-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 32px;
  align-items: center;
  justify-items: center;
}

.client-logo {
  width: 120px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0.5;
  filter: grayscale(100%);
  transition: all 0.3s ease;
}

.client-logo:hover {
  opacity: 1;
  filter: grayscale(0%);
}

.client-logo-placeholder {
  font-size: 18px;
  font-weight: 600;
  color: var(--slate-gray);
}

/* 联系表单 */
.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

.contact-form {
  background: white;
  border-radius: var(--radius-3xl);
  padding: 40px;
  box-shadow: var(--shadow-card);
}

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

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: var(--graphite-gray);
  margin-bottom: 8px;
}

.form-control {
  width: 100%;
  padding: 15px;
  font-size: 14px;
  font-family: inherit;
  color: var(--graphite-gray);
  background: white;
  border: 1px solid #cfcfcf;
  border-radius: var(--radius-lg);
  transition: all 0.2s ease;
}

.form-control:focus {
  outline: none;
  border-color: var(--sky-info);
  box-shadow: 0 0 0 3px rgba(0, 153, 255, 0.1);
}

.form-control::placeholder {
  color: var(--deep-fog-gray);
}

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

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

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.contact-info-card {
  background: white;
  border-radius: var(--radius-3xl);
  padding: 32px;
  box-shadow: var(--shadow-card);
}

.contact-info-card h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--graphite-gray);
  margin-bottom: 20px;
}

.contact-info-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 20px;
}

.contact-info-item:last-child {
  margin-bottom: 0;
}

.contact-info-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-lg);
  background: var(--sky-blue);
  color: var(--signal-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  flex-shrink: 0;
}

.contact-info-text h4 {
  font-size: 14px;
  font-weight: 600;
  color: var(--graphite-gray);
  margin-bottom: 4px;
}

.contact-info-text p {
  font-size: 14px;
  color: var(--fog-gray);
  line-height: 1.5;
}

.social-links {
  display: flex;
  gap: 12px;
}

.social-link {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-lg);
  background: var(--sky-blue);
  color: var(--signal-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  transition: all 0.2s ease;
}

.social-link:hover {
  background: var(--signal-blue);
  color: white;
}

/* 地图 */
.map-container {
  height: 200px;
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: var(--sky-blue);
  display: flex;
  align-items: center;
  justify-content: center;
}

.map-placeholder {
  text-align: center;
  color: var(--fog-gray);
}

.map-placeholder i {
  font-size: 32px;
  margin-bottom: 8px;
  display: block;
}

/* 统计数字 */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.stat-card {
  text-align: center;
  padding: 32px;
}

.stat-number {
  font-size: 48px;
  font-weight: 600;
  color: var(--midnight-blue);
  line-height: 1;
  margin-bottom: 8px;
  font-family: var(--font-mono);
}

.stat-label {
  font-size: 14px;
  color: var(--fog-gray);
}

/* 时间线 */
.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--sky-blue);
  transform: translateX(-50%);
}

.timeline-item {
  position: relative;
  padding: 20px 0;
}

.timeline-item:nth-child(odd) .timeline-content {
  text-align: right;
  padding-right: 40px;
}

.timeline-item:nth-child(even) .timeline-content {
  text-align: left;
  padding-left: 40px;
}

.timeline-dot {
  position: absolute;
  left: 50%;
  top: 28px;
  width: 16px;
  height: 16px;
  background: var(--signal-blue);
  border-radius: 50%;
  transform: translateX(-50%);
  z-index: 1;
}

.timeline-year {
  font-size: 14px;
  font-weight: 600;
  color: var(--signal-blue);
  margin-bottom: 8px;
}

.timeline-content h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--graphite-gray);
  margin-bottom: 8px;
}

.timeline-content p {
  font-size: 14px;
  color: var(--fog-gray);
  line-height: 1.6;
}

/* 团队卡片 */
.team-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.team-card {
  background: white;
  border-radius: var(--radius-3xl);
  padding: 24px;
  text-align: center;
  box-shadow: var(--shadow-card);
  transition: all 0.3s ease;
}

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

.team-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  margin: 0 auto 16px;
  background: var(--sky-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  color: var(--signal-blue);
}

.team-card h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--graphite-gray);
  margin-bottom: 4px;
}

.team-card .position {
  font-size: 13px;
  color: var(--signal-blue);
  margin-bottom: 12px;
}

.team-card p {
  font-size: 13px;
  color: var(--fog-gray);
  line-height: 1.5;
}

/* 页脚 */
.footer {
  background: var(--midnight-blue);
  color: white;
  padding: 60px 0 30px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand {
  max-width: 300px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 16px;
}

.footer-logo .logo-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--signal-blue), var(--primary-action));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 700;
  font-size: 18px;
}

.footer-desc {
  font-size: 14px;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: 20px;
}

.footer-social {
  display: flex;
  gap: 12px;
}

.footer-social a {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.1);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  transition: all 0.2s ease;
}

.footer-social a:hover {
  background: var(--signal-blue);
}

.footer-column h4 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 20px;
  color: white;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-links a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  transition: all 0.2s ease;
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 30px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-copyright {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.4);
}

.footer-legal {
  display: flex;
  gap: 24px;
}

.footer-legal a {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.4);
  transition: all 0.2s ease;
}

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

/* 页面头部 */
.page-header {
  background: var(--sky-blue);
  padding: 120px 0 60px;
  text-align: center;
}

.page-header h1 {
  font-size: 40px;
  font-weight: 600;
  color: var(--midnight-blue);
  margin-bottom: 16px;
}

.page-header p {
  font-size: 16px;
  color: var(--fog-gray);
  max-width: 600px;
  margin: 0 auto;
}

.breadcrumb {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-bottom: 20px;
  font-size: 14px;
}

.breadcrumb a {
  color: var(--fog-gray);
}

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

.breadcrumb span {
  color: var(--deep-fog-gray);
}

.breadcrumb .current {
  color: var(--graphite-gray);
  font-weight: 500;
}

/* 详情页 */
.detail-content {
  max-width: 800px;
  margin: 0 auto;
}

.detail-header {
  margin-bottom: 40px;
}

.detail-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 16px;
  font-size: 14px;
  color: var(--fog-gray);
}

.detail-meta i {
  color: var(--signal-blue);
}

.detail-content h2 {
  font-size: 28px;
  font-weight: 600;
  color: var(--midnight-blue);
  margin-bottom: 20px;
  margin-top: 40px;
}

.detail-content h3 {
  font-size: 22px;
  font-weight: 600;
  color: var(--graphite-gray);
  margin-bottom: 16px;
  margin-top: 32px;
}

.detail-content p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--slate-gray);
  margin-bottom: 16px;
}

.detail-content ul,
.detail-content ol {
  padding-left: 24px;
  margin-bottom: 16px;
}

.detail-content li {
  font-size: 15px;
  line-height: 1.8;
  color: var(--slate-gray);
  margin-bottom: 8px;
}

.detail-content img {
  border-radius: var(--radius-xl);
  margin: 24px 0;
}

.detail-content blockquote {
  border-left: 3px solid var(--signal-blue);
  padding: 16px 24px;
  margin: 24px 0;
  background: var(--sky-blue);
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
}

.detail-content blockquote p {
  font-style: italic;
  color: var(--graphite-gray);
  margin-bottom: 0;
}

/* 返回链接 */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 500;
  color: var(--fog-gray);
  margin-bottom: 32px;
  transition: all 0.2s ease;
}

.back-link:hover {
  color: var(--signal-blue);
}

/* 侧边栏 */
.detail-sidebar {
  margin-top: 40px;
  padding: 24px;
  background: var(--sky-blue);
  border-radius: var(--radius-2xl);
}

.sidebar-section {
  margin-bottom: 24px;
}

.sidebar-section:last-child {
  margin-bottom: 0;
}

.sidebar-section h4 {
  font-size: 14px;
  font-weight: 600;
  color: var(--graphite-gray);
  margin-bottom: 12px;
}

.sidebar-links {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.sidebar-links a {
  font-size: 14px;
  color: var(--fog-gray);
  padding: 8px 12px;
  border-radius: var(--radius-md);
  transition: all 0.2s ease;
}

.sidebar-links a:hover {
  background: white;
  color: var(--signal-blue);
}

/* 移动端菜单 */
.mobile-menu-btn {
  display: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  color: var(--graphite-gray);
}

/* 响应式设计 */
@media (max-width: 1024px) {
  .features-grid,
  .products-grid,
  .news-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .clients-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .team-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  :root {
    --section-gap: 60px;
  }

  .navbar-menu {
    display: none;
  }

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

  .navbar-cta .btn-outline {
    display: none;
  }

  .hero h1 {
    font-size: 36px;
    letter-spacing: -0.5px;
  }

  .hero p {
    font-size: 16px;
  }

  .section-title {
    font-size: 28px;
  }

  .features-grid,
  .products-grid,
  .news-grid,
  .cases-grid {
    grid-template-columns: 1fr;
  }

  .clients-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .contact-wrapper {
    grid-template-columns: 1fr;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

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

  .footer-bottom {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }

  .footer-legal {
    justify-content: center;
  }

  .timeline::before {
    left: 20px;
  }

  .timeline-item:nth-child(odd) .timeline-content,
  .timeline-item:nth-child(even) .timeline-content {
    text-align: left;
    padding-left: 50px;
    padding-right: 0;
  }

  .timeline-dot {
    left: 20px;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 28px;
  }

  .hero-buttons {
    flex-direction: column;
    width: 100%;
  }

  .hero-buttons .btn {
    width: 100%;
  }

  .container {
    padding: 0 16px;
  }
}

/* 移动端菜单 */
.mobile-nav {
  display: none;
  position: fixed;
  top: 70px;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--canvas-bg);
  z-index: 999;
  padding: 24px;
  overflow-y: auto;
}

.mobile-nav.active {
  display: block;
}

.mobile-nav a {
  display: block;
  padding: 16px;
  font-size: 16px;
  color: var(--graphite-gray);
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.mobile-nav a:hover,
.mobile-nav a.active {
  color: var(--signal-blue);
}

/* 动画 */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in-up {
  animation: fadeInUp 0.6s ease forwards;
}

.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }

/* 滚动显示 */
.scroll-animate {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease;
}

.scroll-animate.visible {
  opacity: 1;
  transform: translateY(0);
}