/* 基础样式 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial;
  line-height: 1.6;
  color: #333;
  background-color: #f8fafc;
}

.container {
  width: 100%;
  max-width: 100%;
  margin: 0 auto;
  padding: 0 15px;
  box-sizing: border-box;
}

/* 通用区域样式 */
.section-title {
  text-align: center;
  font-size: 2rem;
  font-weight: bold;
  margin-bottom: 3rem;
  color: #1e40af;
}

/* 锚点高亮和内容显示效果 */
.anchor-highlight {
  animation: highlightFade 2s ease-out;
}

@keyframes highlightFade {
  0% {
    background-color: rgba(251, 191, 36, 0.3);
    box-shadow: 0 0 0 4px rgba(251, 191, 36, 0.3);
  }
  100% {
    background-color: transparent;
    box-shadow: none;
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 确保锚点目标区域有动画效果 */
#advantages,
#profit, 
#guarantee,
#contact,
#promotion {
  animation: fadeIn 0.5s ease-out;
}

/* 动画效果 */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-content,
.section-title,
.guarantee-card,
.step-item,
.strategy-card {
  animation: fadeInUp 0.6s ease-out;
}

/* 滚动效果 */
html {
  scroll-behavior: smooth;
}

/* 主标题区域 */
.hero {
  background: linear-gradient(135deg, #1e40af 0%, #3b82f6 50%, #60a5fa 100%);
  color: white;
  padding: 30px 0 30px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: url('https://picsum.photos/1600/900?grayscale') center/cover no-repeat;
  opacity: 0.05;
  z-index: 0;
}

.hero .container {
  position: relative;
  z-index: 1;
}

/* 营销亮点标签 */
.highlight-badge {
  display: inline-block;
  background: rgba(251, 191, 36, 0.2);
  color: #fbbf24;
  padding: 5px 15px;
  border-radius: 50px;
  font-size: 0.9rem;
  font-weight: bold;
  margin-bottom: 1rem;
  border: 1px solid rgba(251, 191, 36, 0.3);
}

/* 营销卡片增强效果 */
.marketing-card {
  position: relative;
  overflow: hidden;
  transition: all 0.3s ease;
}

.marketing-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(30, 64, 175, 0.1) 0%, transparent 100%);
  z-index: -1;
}

.marketing-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 20px 40px rgba(30, 64, 175, 0.15);
}

/* 限时优惠标签 */
.time-limited {
  position: absolute;
  top: 15px;
  right: 15px;
  background: linear-gradient(45deg, #f59e0b, #fbbf24);
  color: white;
  padding: 5px 10px;
  border-radius: 5px;
  font-size: 0.8rem;
  font-weight: bold;
  animation: pulse 2s infinite;
}

.hero-title {
  font-size: 2.5rem;
  font-weight: bold;
  margin-bottom: 1rem;
  line-height: 1.2;
}

.highlight {
  background: linear-gradient(45deg, #fbbf24, #f59e0b);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.2rem;
  margin-bottom: 2rem;
  opacity: 0.9;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 3rem;
  margin-bottom: 2rem;
}

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

.stat-number {
  display: block;
  font-size: 2rem;
  font-weight: bold;
  color: #fbbf24;
}

.stat-label {
  font-size: 0.9rem;
  opacity: 0.8;
}

.cta-button {
  background: linear-gradient(45deg, #f59e0b, #fbbf24);
  color: white;
  border: none;
  padding: 15px 30px;
  font-size: 1.1rem;
  font-weight: bold;
  border-radius: 50px;
  cursor: pointer;
  transition: transform 0.3s, box-shadow 0.3s;
}

.cta-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(245, 158, 11, 0.3);
}

/* 痛点解决方案 */
.pain-points {
  padding: 80px 0;
  background: white;
}

.comparison-table {
  display: grid;
  grid-template-columns: 1fr 2fr 2fr 2fr;
  gap: 1px;
  background: #e5e7eb;
  border-radius: 10px;
  overflow: hidden;
}

.table-row {
  display: contents;
}

.table-cell {
  background: white;
  padding: 20px;
  font-size: 0.9rem;
}

.header-row .table-cell {
  background: #1e40af;
  color: white;
  font-weight: bold;
  text-align: center;
}

.industry {
  background: #eff6ff !important;
  font-weight: bold;
  color: #1e40af;
  text-align: center;
}

.pain {
  color: #7c2d12;
}

.solution {
  color: #166534;
}

.case {
  background: #f0f9ff !important;
  color: #0c4a6e;
  font-weight: 500;
}

/* 暴利分润模型 */
.profit-model {
  padding: 80px 0;
  background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
  position: relative;
  overflow: hidden;
}

.profit-model::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: url('https://picsum.photos/1600/900?grayscale') center/cover no-repeat;
  opacity: 0.03;
  z-index: 0;
}

.profit-model .container {
  position: relative;
  z-index: 1;
}

/* 收益突出显示 */
.profit-highlight {
  background: linear-gradient(45deg, #f59e0b, #fbbf24);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: bold;
  font-size: 1.2em;
}

.formula-box {
  background: white;
  padding: 30px;
  border-radius: 15px;
  text-align: center;
  margin-bottom: 3rem;
  box-shadow: 0 10px 30px rgba(30, 64, 175, 0.1);
}

.formula-box h3 {
  font-size: 1.5rem;
  color: #1e40af;
  margin-bottom: 1rem;
}

.profit-calculation h3 {
  text-align: center;
  color: #1e40af;
  margin-bottom: 2rem;
}

.calc-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
}

.calc-item {
  background: white;
  padding: 25px;
  border-radius: 10px;
  text-align: center;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.calc-label {
  font-weight: bold;
  color: #1e40af;
  margin-bottom: 10px;
}

.calc-value {
  font-size: 1.1rem;
  color: #059669;
  font-weight: 600;
}

.calc-item.total {
  background: linear-gradient(135deg, #1e40af, #3b82f6);
  color: white;
}

.calc-item.total .calc-label,
.calc-item.total .calc-value {
  color: white;
}

.calc-note {
  font-size: 0.9rem;
  opacity: 0.8;
  margin-top: 5px;
}

/* 合作保障 */
.guarantee {
  padding: 80px 0;
  background: white;
}

.guarantee-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  width: 100%;
}

.guarantee-card {
  width: 100%;
  background: linear-gradient(135deg, #eff6ff, #dbeafe);
  padding: 20px;
  border-radius: 15px;
  border-left: 5px solid #3b82f6;
  box-sizing: border-box;
}

.guarantee-card h3 {
  color: #1e40af;
  font-size: 1.3rem;
  margin-bottom: 1rem;
}

.guarantee-card ul {
  list-style: none;
}

.guarantee-card li {
  padding: 8px 0;
  position: relative;
  padding-left: 25px;
}

.guarantee-card li:before {
  content: "✓";
  position: absolute;
  left: 0;
  color: #059669;
  font-weight: bold;
}

/* 落地步骤 */
.steps {
  padding: 80px 0;
  background: linear-gradient(135deg, #f8fafc, #e2e8f0);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
  margin-bottom: 3rem;
}

.step-item {
  background: white;
  padding: 30px;
  border-radius: 15px;
  text-align: center;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s;
}

.step-item:hover {
  transform: translateY(-5px);
}

.step-number {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, #3b82f6, #1e40af);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: bold;
  margin: 0 auto 1rem;
}

.step-item h3 {
  color: #1e40af;
  margin-bottom: 1rem;
}

.reminder {
  background: #fef3c7;
  padding: 20px;
  border-radius: 10px;
  border-left: 5px solid #f59e0b;
  text-align: center;
}

/* 招商策略 */
.strategy {
  padding: 80px 0;
  background: white;
}

.strategy-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  width: 100%;
}

.strategy-card {
  width: 100%;
  background: linear-gradient(135deg, #eff6ff, #dbeafe);
  padding: 20px;
  border-radius: 15px;
  box-sizing: border-box;
  margin-bottom: 20px;
}

.strategy-card h3 {
  color: #1e40af;
  margin-bottom: 1rem;
}

.strategy-card blockquote {
  background: white;
  padding: 20px;
  border-radius: 10px;
  border-left: 4px solid #3b82f6;
  font-style: italic;
  color: #374151;
}

.strategy-card ul {
  list-style: none;
}

.strategy-card li {
  padding: 10px 0;
  position: relative;
  padding-left: 25px;
}

.strategy-card li:before {
  content: "▶";
  position: absolute;
  left: 0;
  color: #3b82f6;
}

/* 免费推广方式 */
.free-promotion {
  padding: 80px 0;
  background: linear-gradient(135deg, #f0fdf4 0%, #dcfce7 100%);
  position: relative;
  overflow: hidden;
}

/* 成功案例展示 */
.success-stories {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.story-card {
  background: white;
  padding: 25px;
  border-radius: 15px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
}

.story-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
}

.story-avatar {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  object-fit: cover;
  margin-right: 15px;
}

.story-header {
  display: flex;
  align-items: center;
  margin-bottom: 15px;
}

.story-name {
  font-weight: bold;
  color: #1e40af;
}

.story-title {
  font-size: 0.9rem;
  color: #6b7280;
}

.story-content {
  color: #374151;
  line-height: 1.6;
}

.free-promotion::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: url('https://picsum.photos/1600/900?grayscale') center/cover no-repeat;
  opacity: 0.03;
  z-index: 0;
}

.promotion-intro {
  text-align: center;
  margin-bottom: 3rem;
  position: relative;
}

.intro-text {
  font-size: 1.1rem;
  color: #374151;
  max-width: 800px;
  margin: 0 auto;
  line-height: 1.8;
  position: relative;
}

.promotion-methods {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 30px;
  margin-bottom: 4rem;
  position: relative;
}

.method-card {
  background: rgba(255, 255, 255, 0.95);
  padding: 30px;
  border-radius: 15px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  border-top: 4px solid #10b981;
  transition: all 0.4s ease;
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(5px);
}

.method-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.1) 0%, transparent 100%);
  z-index: -1;
}

.method-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.method-icon {
  font-size: 3rem;
  text-align: center;
  margin-bottom: 1rem;
}

.method-card h3 {
  color: #10b981;
  font-size: 1.3rem;
  text-align: center;
  margin-bottom: 1.5rem;
}

.method-content h4 {
  color: #374151;
  margin-bottom: 1rem;
  font-size: 1.1rem;
}

.method-content ol,
.method-content ul {
  margin-bottom: 1.5rem;
  padding-left: 20px;
}

.method-content li {
  margin-bottom: 8px;
  line-height: 1.6;
}

.method-example {
  background: #f0fdf4;
  padding: 15px;
  border-radius: 8px;
  border-left: 4px solid #10b981;
}

.method-example blockquote {
  margin: 10px 0 0 0;
  font-style: italic;
  color: #374151;
}

.method-stats {
  display: flex;
  justify-content: space-around;
  margin-top: 1rem;
}

.stat {
  text-align: center;
}

.stat-num {
  display: block;
  font-size: 1.5rem;
  font-weight: bold;
  color: #10b981;
}

.stat-desc {
  font-size: 0.9rem;
  color: #6b7280;
}

.cooperation-benefit {
  background: #eff6ff;
  padding: 15px;
  border-radius: 8px;
  margin-top: 1rem;
}

.video-tips {
  background: #fef3c7;
  padding: 15px;
  border-radius: 8px;
  margin-top: 1rem;
}

.video-tips p {
  margin-bottom: 5px;
}

.promotion-support {
  background: white;
  padding: 40px;
  border-radius: 15px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.promotion-support h3 {
  text-align: center;
  color: #10b981;
  font-size: 1.5rem;
  margin-bottom: 2rem;
}

.support-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 25px;
}

.support-item {
  text-align: center;
  padding: 20px;
  background: linear-gradient(135deg, #f0fdf4, #dcfce7);
  border-radius: 10px;
}

.support-item h4 {
  color: #10b981;
  margin-bottom: 10px;
  font-size: 1.1rem;
}

.support-item p {
  color: #374151;
  font-size: 0.9rem;
  line-height: 1.5;
}

/* 联系我们 */
.contact {
  padding: 80px 0;
  background: linear-gradient(135deg, #1e40af, #3b82f6);
  color: white;
}

.contact .section-title {
  color: white;
}

.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
}

.contact-info h3,
.contact-form h3 {
  margin-bottom: 2rem;
  font-size: 1.3rem;
}

.contact-item {
  margin-bottom: 1rem;
}

.contact-label {
  font-weight: bold;
}

.contact-value {
  color: #fbbf24;
}

.contact-form {
  background: rgba(255, 255, 255, 0.1);
  padding: 30px;
  border-radius: 15px;
  backdrop-filter: blur(10px);
}

/* 二维码咨询自适应 */
.qrcode-container {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  width: 100%;
  max-width: 550px;
  margin: 0 auto;
}

.qrcode-item {
  text-align: center;
  flex: 1;
}

.qrcode-item img {
  width: 100%;
  max-width: 220px;
  height: auto;
  border-radius: 12px;
  box-shadow: 0 4px 16px rgba(30,64,175,0.08);
}

.qrcode-item p {
  margin-top: 10px;
  font-size: 1rem;
  color: #fbbf24;
  font-weight: 500;
}

/* 二维码区自适应优化 */
@media (max-width: 900px) {
  .qrcode-container {
    flex-direction: column;
    align-items: center;
    gap: 20px;
    max-width: 100%;
  }
  .qrcode-item img {
    max-width: 180px;
  }
}

@media (max-width: 480px) {
  .qrcode-item img {
    max-width: 140px;
  }
}

/* 导航栏响应式设计 */
.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: white;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
}

.header.scrolled {
  background: rgba(255, 255, 255, 0.98) !important;
  backdrop-filter: blur(10px);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

.header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 20px;
}

.logo img {
  height: 40px;
}

.nav {
  display: flex;
  gap: 20px;
}

.nav a {
  color: #1f2937;
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s;
}

.nav a:hover {
  color: #3b82f6;
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  font-size: 24px;
  cursor: pointer;
}

/* 页脚 */
.footer-bottom {
  background-color: #1f2937;
  padding: 15px 0;
  text-align: center;
  font-size: 12px;
  color: #e9edff;
}

.footer-icp {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 10px;
}

.footer-icp img {
  width: 20px;
  height: 20px;
  vertical-align: middle;
}

.footer {
  background: #1f2937;
  color: white;
  text-align: center;
  padding: 30px 0;
}

/* 回到顶部按钮 */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background-color: rgba(59, 130, 246, 0.9);
  color: white;
  font-size: 20px;
  border: 2px solid white;
  cursor: pointer;
  opacity: 0;
  transition: all 0.3s ease;
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  transform: translateY(20px);
}

/* 电脑端优化样式 */
@media (min-width: 1024px) {
  .container {
    max-width: 1200px;
    padding: 0 30px;
  }
  
  .guarantee-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .strategy-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .steps-grid {
    grid-template-columns: repeat(4, 1fr);
  }
  
  .success-stories {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .promotion-methods {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* 手机端导航样式 */
@media (max-width: 768px) {
  .nav {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    flex-direction: column;
    align-items: center;
    padding: 15px 0;
    box-shadow: 0 8px 32px rgba(30, 64, 175, 0.15);
    transform: translateY(-150%);
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    z-index: 1000;
    max-height: calc(100vh - 70px);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    touch-action: manipulation;
    width: 100%;
    max-width: 100vw;
    box-sizing: border-box;
    border-radius: 0 0 16px 16px;
    border-top: 1px solid rgba(30, 64, 175, 0.1);
  }
  
  .nav.active {
    transform: translateY(0);
    box-shadow: 0 12px 40px rgba(30, 64, 175, 0.2);
  }
  
  .mobile-menu-btn {
    display: flex;
    position: fixed;
    top: 15px;
    right: 15px;
    align-items: center;
    justify-content: center;
    z-index: 1001;
    width: 44px;
    height: 44px;
    background: rgba(30, 64, 175, 0.1);
    border-radius: 12px;
    color: #1e40af;
    touch-action: manipulation;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
    font-size: 24px;
    border: none;
    outline: none;
    transition: all 0.3s ease;
  }
  
  .mobile-menu-btn:hover {
    background: rgba(30, 64, 175, 0.2);
    transform: scale(1.05);
  }
  
  .mobile-menu-btn.active {
    background: rgba(30, 64, 175, 0.2);
  }
  
  .nav a {
    padding: 16px 20px;
    width: 90%;
    text-align: center;
    font-size: 1.1rem;
    color: #1e40af;
    margin: 4px 0;
    border-radius: 12px;
    transition: all 0.3s ease;
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
    text-decoration: none;
    font-weight: 500;
    background: rgba(30, 64, 175, 0.05);
  }
  
  .nav a:hover {
    background: rgba(30, 64, 175, 0.1);
    transform: translateY(-2px);
  }
  
  .nav a:active {
    transform: translateY(0);
  }

  /* 防止双击缩放 */
  html {
    touch-action: manipulation;
  }
  
  /* 确保点击区域合适 */
  .nav a, .mobile-menu-btn {
    min-height: 44px;
  }

  /* 防止内容溢出 */
  .container {
    padding: 0 15px;
    width: 100%;
    box-sizing: border-box;
  }
  
  /* 营销内容优化 */
  .hero-title {
    font-size: 2rem;
  }
  
  .hero-subtitle {
    font-size: 1.1rem;
  }
  
  .section-title {
    font-size: 1.8rem;
  }
  
  /* 卡片间距优化 */
  .guarantee-card, 
  .step-item,
  .strategy-card {
    margin-bottom: 20px;
  }
}

.back-to-top:hover {
  background-color: rgba(37, 99, 235, 0.9);
  transform: translateY(-5px) scale(1.1);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

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

/* 脉冲动画效果 */
.back-to-top.pulse {
  animation: pulse 0.3s ease;
}

@keyframes pulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.1); }
  100% { transform: scale(1); }
}

/* 点击动画效果 */
.back-to-top.clicked {
  animation: clicked 0.5s ease;
}

@keyframes clicked {
  0% { transform: scale(1); }
  50% { transform: scale(0.9); }
  100% { transform: scale(1); }
}

/* 字体设置 - 使用免费商用字体 */
@font-face {
  font-family: 'Noto Sans SC';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC&display=swap');
}

@font-face {
  font-family: 'Noto Sans SC';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@700&display=swap');
}

/* 标题字体 */
h1, h2, h3, h4, h5, h6 {
  font-family: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  font-weight: 700;
}