/* ===== 全局基础样式 ===== */
:root {
  --primary: #6a3d9a;
  --primary-light: #8b5fbf;
  --primary-dark: #4a2570;
  --secondary: #27aeaa;
  --secondary-light: #4cc9c5;
  --accent: #ff6f61;
  --accent-light: #ff9a8f;
  --warm-yellow: #ffc300;
  --deep-blue: #192a56;
  --soft-blue: #6495ed;
  --warm-pink: #ec708c;
  --mint: #77c6a3;
  --text-primary: #2d2d3a;
  --text-secondary: #5a5a72;
  --text-light: #8888a0;
  --bg-primary: #ffffff;
  --bg-secondary: #f5f3f8;
  --bg-tertiary: #ede8f5;
  --border-color: #e0dce8;
  --shadow-sm: 0 2px 8px rgba(106,61,154,0.08);
  --shadow-md: 0 4px 20px rgba(106,61,154,0.12);
  --shadow-lg: 0 8px 40px rgba(106,61,154,0.16);
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font-main: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-display: 'Noto Serif SC', 'STSong', serif;
}

*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-main);
  color: var(--text-primary);
  background-color: var(--bg-primary);
  line-height: 1.8;
  overflow-x: hidden;
}

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

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

a:hover {
  color: var(--accent);
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  line-height: 1.4;
  color: var(--text-primary);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ===== 干扰标签区块隐藏 ===== */
.jammer-block {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
  opacity: 0;
  pointer-events: none;
  z-index: -9999;
}

/* ===== 导航栏（非sticky） ===== */
.site-header {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  padding: 0;
  position: relative;
  z-index: 100;
}

.header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 0;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.header-top .contact-info {
  display: flex;
  gap: 20px;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.8);
}

.header-top .contact-info a {
  color: rgba(255,255,255,0.8);
}

.header-top .contact-info a:hover {
  color: var(--warm-yellow);
}

.site-logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.site-logo img {
  height: 40px;
  width: auto;
}

.site-logo .logo-text {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: 1px;
}

.main-nav {
  padding: 0;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 0;
}

.nav-links li {
  position: relative;
}

.nav-links a {
  display: block;
  padding: 10px 18px;
  color: rgba(255,255,255,0.9);
  font-size: 0.95rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
  color: #fff;
  background: rgba(255,255,255,0.15);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 24px;
  background: var(--accent);
  color: #fff !important;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: var(--transition);
}

.nav-cta:hover {
  background: var(--accent-light);
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(255,111,97,0.4);
}

/* Mobile menu */
.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  background: none;
  border: none;
}

.mobile-toggle span {
  display: block;
  width: 26px;
  height: 3px;
  background: #fff;
  border-radius: 2px;
  transition: var(--transition);
}

@media (max-width: 768px) {
  .mobile-toggle {
    display: flex;
  }
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--primary-dark);
    flex-direction: column;
    padding: 10px 0;
    z-index: 999;
  }
  .nav-links.active {
    display: flex;
  }
  .nav-links a {
    padding: 12px 24px;
    border-radius: 0;
  }
  .nav-cta {
    display: none;
  }
  .header-top {
    display: none;
  }
}

/* ===== 面包屑导航 ===== */
.breadcrumb {
  padding: 16px 0;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
}

.breadcrumb-list {
  display: flex;
  list-style: none;
  gap: 8px;
  align-items: center;
  font-size: 0.88rem;
  color: var(--text-light);
  flex-wrap: wrap;
}

.breadcrumb-list li::after {
  content: '>';
  margin-left: 8px;
  color: var(--text-light);
}

.breadcrumb-list li:last-child::after {
  display: none;
}

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

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

/* ===== 英雄横幅 ===== */
.hero-banner {
  position: relative;
  min-height: 600px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: linear-gradient(135deg, var(--deep-blue) 0%, var(--primary) 50%, var(--secondary) 100%);
}

.hero-banner .hero-bg {
  position: absolute;
  inset: 0;
  z-index: 1;
}

.hero-banner .hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.3;
}

.hero-banner .hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(25,42,86,0.85), rgba(106,61,154,0.7), rgba(39,174,170,0.5));
  z-index: 2;
}

.hero-content {
  position: relative;
  z-index: 3;
  max-width: 700px;
  padding: 60px 0;
}

.hero-content h1 {
  font-size: 3rem;
  color: #fff;
  margin-bottom: 20px;
  line-height: 1.3;
  text-shadow: 0 2px 10px rgba(0,0,0,0.2);
}

.hero-content p {
  font-size: 1.2rem;
  color: rgba(255,255,255,0.9);
  margin-bottom: 30px;
  line-height: 1.8;
}

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

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.btn-primary:hover {
  background: var(--accent-light);
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  color: #fff;
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255,255,255,0.6);
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.btn-secondary:hover {
  background: rgba(255,255,255,0.15);
  border-color: #fff;
  color: #fff;
  transform: translateY(-3px);
}

/* Decorative floating elements */
.hero-decoration {
  position: absolute;
  right: 5%;
  top: 50%;
  transform: translateY(-50%);
  z-index: 3;
  width: 400px;
  height: 400px;
}

.float-circle {
  position: absolute;
  border-radius: 50%;
  animation: float 6s ease-in-out infinite;
}

.float-circle:nth-child(1) {
  width: 200px;
  height: 200px;
  background: rgba(255,195,0,0.2);
  top: 20%;
  right: 10%;
  animation-delay: 0s;
}

.float-circle:nth-child(2) {
  width: 150px;
  height: 150px;
  background: rgba(255,111,97,0.2);
  top: 50%;
  right: 30%;
  animation-delay: 2s;
}

.float-circle:nth-child(3) {
  width: 100px;
  height: 100px;
  background: rgba(39,174,170,0.3);
  top: 10%;
  right: 40%;
  animation-delay: 4s;
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-20px); }
}

/* ===== 内页横幅 ===== */
.page-banner {
  position: relative;
  padding: 80px 0;
  background: linear-gradient(135deg, var(--deep-blue), var(--primary));
  overflow: hidden;
}

.page-banner .banner-bg {
  position: absolute;
  inset: 0;
  opacity: 0.2;
}

.page-banner .banner-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-banner .container {
  position: relative;
  z-index: 2;
}

.page-banner h1 {
  font-size: 2.4rem;
  color: #fff;
  margin-bottom: 12px;
}

.page-banner p {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.85);
  max-width: 600px;
}

/* ===== 通用模块 ===== */
.section {
  padding: 80px 0;
}

.section-alt {
  background: var(--bg-secondary);
}

.section-title {
  text-align: center;
  margin-bottom: 50px;
}

.section-title h2 {
  font-size: 2.2rem;
  color: var(--text-primary);
  margin-bottom: 12px;
  position: relative;
  display: inline-block;
}

.section-title h2::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  border-radius: 2px;
}

.section-title p {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 20px auto 0;
}

/* ===== 品牌故事简介模块 ===== */
.brand-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: center;
}

.brand-intro-text h3 {
  font-size: 1.8rem;
  margin-bottom: 16px;
  color: var(--primary-dark);
}

.brand-intro-text p {
  margin-bottom: 16px;
  color: var(--text-secondary);
  font-size: 1rem;
}

.brand-intro-media {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.brand-intro-media img {
  width: 100%;
  transition: var(--transition);
}

.video-play-btn {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 70px;
  height: 70px;
  background: var(--accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: 0 4px 20px rgba(255,111,97,0.5);
}

.video-play-btn::after {
  content: '';
  display: block;
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 12px 0 12px 20px;
  border-color: transparent transparent transparent #fff;
  margin-left: 4px;
}

.video-play-btn:hover {
  transform: translate(-50%, -50%) scale(1.1);
  box-shadow: 0 6px 30px rgba(255,111,97,0.6);
}

@media (max-width: 768px) {
  .brand-intro {
    grid-template-columns: 1fr;
    gap: 30px;
  }
}

/* ===== 功能亮点 ===== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.feature-card {
  background: var(--bg-primary);
  border-radius: var(--radius-md);
  padding: 40px 30px;
  text-align: center;
  transition: var(--transition);
  border: 1px solid var(--border-color);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  transform: scaleX(0);
  transition: var(--transition);
}

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

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

.feature-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 20px;
  border-radius: 50%;
  overflow: hidden;
}

.feature-icon img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.feature-card h3 {
  font-size: 1.3rem;
  margin-bottom: 12px;
  color: var(--primary-dark);
}

.feature-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

@media (max-width: 768px) {
  .features-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
}

/* ===== 用户故事集 ===== */
.stories-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.story-card {
  background: var(--bg-primary);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.story-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

.story-card-img {
  position: relative;
  height: 200px;
  overflow: hidden;
}

.story-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.story-card:hover .story-card-img img {
  transform: scale(1.05);
}

.story-card-body {
  padding: 24px;
}

.story-card-body .user-info {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.user-info .avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  overflow: hidden;
  flex-shrink: 0;
}

.user-info .avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.user-info .user-meta {
  font-size: 0.88rem;
}

.user-info .user-meta strong {
  display: block;
  color: var(--text-primary);
}

.user-info .user-meta span {
  color: var(--text-light);
}

.story-card-body blockquote {
  font-style: italic;
  color: var(--text-secondary);
  border-left: 3px solid var(--primary);
  padding-left: 16px;
  margin: 0;
  font-size: 0.95rem;
}

@media (max-width: 768px) {
  .stories-grid {
    grid-template-columns: 1fr;
  }
}

/* ===== 情感FAQ模块 ===== */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: var(--bg-primary);
  border-radius: var(--radius-md);
  margin-bottom: 16px;
  border: 1px solid var(--border-color);
  overflow: hidden;
  transition: var(--transition);
}

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

.faq-question {
  padding: 20px 24px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--text-primary);
  transition: var(--transition);
}

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

.faq-question .toggle-icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--bg-tertiary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: var(--transition);
  font-size: 1.2rem;
  color: var(--primary);
}

.faq-item.active .faq-question .toggle-icon {
  background: var(--primary);
  color: #fff;
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}

.faq-item.active .faq-answer {
  max-height: 500px;
}

.faq-answer-inner {
  padding: 0 24px 20px;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* ===== 信任区域 ===== */
.trust-section {
  background: linear-gradient(135deg, var(--bg-tertiary), var(--bg-secondary));
  padding: 60px 0;
}

.trust-badges {
  display: flex;
  justify-content: center;
  gap: 40px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.trust-badge {
  text-align: center;
}

.trust-badge img {
  width: 80px;
  height: 80px;
  margin: 0 auto 10px;
  border-radius: 50%;
}

.trust-badge span {
  display: block;
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.reviews-slider {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 30px;
}

.review-card {
  background: var(--bg-primary);
  padding: 24px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.review-card .stars {
  color: var(--warm-yellow);
  font-size: 1.1rem;
  margin-bottom: 12px;
}

.review-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 12px;
}

.review-card .reviewer {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-primary);
}

@media (max-width: 768px) {
  .reviews-slider {
    grid-template-columns: 1fr;
  }
  .trust-badges {
    gap: 20px;
  }
}

/* ===== 页脚 ===== */
.site-footer {
  background: var(--deep-blue);
  color: rgba(255,255,255,0.8);
  padding: 60px 0 0;
}

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

.footer-brand p {
  margin-top: 16px;
  font-size: 0.92rem;
  line-height: 1.8;
  color: rgba(255,255,255,0.6);
}

.footer-social {
  display: flex;
  gap: 12px;
  margin-top: 20px;
}

.footer-social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255,255,255,0.1);
  color: rgba(255,255,255,0.8);
  transition: var(--transition);
  font-size: 0.85rem;
}

.footer-social a:hover {
  background: var(--primary);
  color: #fff;
}

.footer-col h4 {
  color: #fff;
  font-size: 1.05rem;
  margin-bottom: 20px;
  position: relative;
  padding-bottom: 10px;
}

.footer-col h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 30px;
  height: 3px;
  background: var(--secondary);
  border-radius: 2px;
}

.footer-col ul {
  list-style: none;
}

.footer-col ul li {
  margin-bottom: 10px;
}

.footer-col ul a {
  color: rgba(255,255,255,0.6);
  font-size: 0.92rem;
  transition: var(--transition);
}

.footer-col ul a:hover {
  color: var(--secondary-light);
  padding-left: 5px;
}

.footer-bottom {
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.5);
}

.footer-bottom a {
  color: rgba(255,255,255,0.5);
}

.footer-bottom a:hover {
  color: var(--secondary-light);
}

@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

/* ===== 博客卡片 ===== */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
}

.blog-card {
  display: flex;
  background: var(--bg-primary);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  border: 1px solid var(--border-color);
}

.blog-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: transparent;
}

.blog-card-img {
  width: 240px;
  flex-shrink: 0;
  overflow: hidden;
}

.blog-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.blog-card:hover .blog-card-img img {
  transform: scale(1.05);
}

.blog-card-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.blog-card-body .tag {
  display: inline-block;
  padding: 4px 12px;
  background: var(--bg-tertiary);
  color: var(--primary);
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 500;
  margin-bottom: 10px;
  width: fit-content;
}

.blog-card-body h3 {
  font-size: 1.15rem;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.blog-card-body h3 a {
  color: inherit;
}

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

.blog-card-body p {
  color: var(--text-secondary);
  font-size: 0.92rem;
  margin-bottom: 12px;
}

.blog-card-body .meta {
  font-size: 0.82rem;
  color: var(--text-light);
}

@media (max-width: 768px) {
  .blog-grid {
    grid-template-columns: 1fr;
  }
  .blog-card {
    flex-direction: column;
  }
  .blog-card-img {
    width: 100%;
    height: 200px;
  }
}

/* ===== 案例展示 ===== */
.cases-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
}

.case-card {
  background: var(--bg-primary);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  border: 1px solid var(--border-color);
}

.case-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

.case-card-img {
  height: 250px;
  overflow: hidden;
}

.case-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.case-card:hover .case-card-img img {
  transform: scale(1.05);
}

.case-card-body {
  padding: 28px;
}

.case-card-body .industry-tag {
  display: inline-block;
  padding: 4px 14px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 500;
  margin-bottom: 12px;
}

.case-card-body h3 {
  font-size: 1.2rem;
  margin-bottom: 10px;
}

.case-card-body p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 16px;
}

.case-card-body .case-quote {
  font-style: italic;
  border-left: 3px solid var(--accent);
  padding-left: 16px;
  color: var(--text-secondary);
  font-size: 0.92rem;
}

.case-stats {
  display: flex;
  gap: 20px;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border-color);
}

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

.case-stat .number {
  display: block;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary);
}

.case-stat .label {
  font-size: 0.8rem;
  color: var(--text-light);
}

@media (max-width: 768px) {
  .cases-grid {
    grid-template-columns: 1fr;
  }
}

/* ===== 产品详情页 ===== */
.product-feature-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: center;
  padding: 60px 0;
}

.product-feature-section:nth-child(even) {
  direction: rtl;
}

.product-feature-section:nth-child(even) > * {
  direction: ltr;
}

.product-feature-text h3 {
  font-size: 1.6rem;
  margin-bottom: 16px;
  color: var(--primary-dark);
}

.product-feature-text p {
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.product-feature-text ul {
  list-style: none;
  padding: 0;
}

.product-feature-text ul li {
  padding: 8px 0;
  padding-left: 28px;
  position: relative;
  color: var(--text-secondary);
}

.product-feature-text ul li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--secondary);
  font-weight: 700;
}

.product-feature-media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.product-feature-media img {
  width: 100%;
  transition: var(--transition);
}

@media (max-width: 768px) {
  .product-feature-section {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .product-feature-section:nth-child(even) {
    direction: ltr;
  }
}

/* ===== 时间轴 ===== */
.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
  padding: 20px 0;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(to bottom, var(--primary), var(--secondary));
}

.timeline-item {
  position: relative;
  padding: 20px 0;
  display: flex;
  align-items: flex-start;
}

.timeline-item:nth-child(odd) {
  flex-direction: row-reverse;
  text-align: right;
}

.timeline-content {
  width: 45%;
  background: var(--bg-primary);
  padding: 24px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
}

.timeline-content h4 {
  color: var(--primary);
  margin-bottom: 8px;
  font-size: 1.1rem;
}

.timeline-content p {
  color: var(--text-secondary);
  font-size: 0.92rem;
}

.timeline-dot {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 16px;
  height: 16px;
  background: var(--primary);
  border: 3px solid var(--bg-primary);
  border-radius: 50%;
  z-index: 2;
  box-shadow: 0 0 0 4px var(--primary-light);
}

@media (max-width: 768px) {
  .timeline::before {
    left: 20px;
  }
  .timeline-item,
  .timeline-item:nth-child(odd) {
    flex-direction: row;
    text-align: left;
    padding-left: 50px;
  }
  .timeline-content {
    width: 100%;
  }
  .timeline-dot {
    left: 20px;
  }
}

/* ===== 下载页面 ===== */
.download-hero {
  text-align: center;
  padding: 80px 0;
}

.download-hero h2 {
  font-size: 2rem;
  margin-bottom: 16px;
}

.download-hero p {
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 30px;
}

.download-badges {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}

.download-badges a img {
  height: 50px;
  border-radius: 8px;
}

.download-features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  margin-top: 60px;
}

.download-feature-card {
  text-align: center;
  padding: 30px;
  background: var(--bg-primary);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.download-feature-card h4 {
  margin: 16px 0 8px;
  color: var(--primary-dark);
}

.download-feature-card p {
  color: var(--text-secondary);
  font-size: 0.92rem;
}

@media (max-width: 768px) {
  .download-features {
    grid-template-columns: 1fr;
  }
}

/* ===== 动画效果 ===== */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

.slide-in-left {
  opacity: 0;
  transform: translateX(-50px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.slide-in-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.slide-in-right {
  opacity: 0;
  transform: translateX(50px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.slide-in-right.visible {
  opacity: 1;
  transform: translateX(0);
}

/* ===== 内容文章样式 ===== */
.article-content {
  max-width: 800px;
  margin: 0 auto;
  padding: 40px 0;
}

.article-content h2 {
  font-size: 1.6rem;
  margin: 40px 0 16px;
  color: var(--primary-dark);
}

.article-content h3 {
  font-size: 1.3rem;
  margin: 30px 0 12px;
  color: var(--text-primary);
}

.article-content p {
  margin-bottom: 16px;
  color: var(--text-secondary);
  line-height: 1.9;
}

.article-content ul, .article-content ol {
  margin-bottom: 16px;
  padding-left: 24px;
  color: var(--text-secondary);
}

.article-content li {
  margin-bottom: 8px;
  line-height: 1.8;
}

.article-content blockquote {
  border-left: 4px solid var(--primary);
  padding: 16px 24px;
  margin: 24px 0;
  background: var(--bg-secondary);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--text-secondary);
  font-style: italic;
}

.article-content img {
  border-radius: var(--radius-md);
  margin: 24px 0;
  box-shadow: var(--shadow-sm);
}

/* ===== 隐私政策 ===== */
.privacy-content {
  max-width: 800px;
  margin: 0 auto;
  padding: 40px 0;
}

.privacy-content h2 {
  font-size: 1.5rem;
  margin: 30px 0 12px;
  color: var(--primary-dark);
  padding-bottom: 8px;
  border-bottom: 2px solid var(--border-color);
}

.privacy-content p {
  margin-bottom: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* ===== 数据统计展示 ===== */
.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  padding: 40px 0;
}

.stat-item {
  text-align: center;
  padding: 24px;
  background: rgba(255,255,255,0.1);
  border-radius: var(--radius-md);
  backdrop-filter: blur(10px);
}

.stat-item .stat-number {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--warm-yellow);
  display: block;
}

.stat-item .stat-label {
  font-size: 0.92rem;
  color: rgba(255,255,255,0.8);
  margin-top: 8px;
}

@media (max-width: 768px) {
  .stats-row {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
  .hero-content h1 {
    font-size: 2rem;
  }
  .hero-decoration {
    display: none;
  }
  .section {
    padding: 50px 0;
  }
  .section-title h2 {
    font-size: 1.6rem;
  }
}

/* ===== CTA区域 ===== */
.cta-section {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  padding: 80px 0;
  text-align: center;
  color: #fff;
}

.cta-section h2 {
  font-size: 2rem;
  color: #fff;
  margin-bottom: 16px;
}

.cta-section p {
  font-size: 1.1rem;
  opacity: 0.9;
  max-width: 600px;
  margin: 0 auto 30px;
}

.cta-section .btn-primary {
  background: #fff;
  color: var(--primary);
}

.cta-section .btn-primary:hover {
  background: var(--warm-yellow);
  color: var(--deep-blue);
}

/* ===== 内页通用内容区 ===== */
.page-content {
  padding: 60px 0;
}

.content-block {
  margin-bottom: 40px;
}

.content-block h2 {
  font-size: 1.6rem;
  margin-bottom: 16px;
  color: var(--primary-dark);
}

.content-block p {
  color: var(--text-secondary);
  line-height: 1.9;
  margin-bottom: 14px;
}