/* 基础重置 */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: system-ui, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  overflow-x: hidden;
  background: #fdfaf5;
  color: #4a3728;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* 核心布局 */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}
.section {
  padding: 80px 0;
  position: relative;
}
.section:nth-child(even) {
  background: #f5f0e8;
  position: relative;
}
.section:nth-child(even)::before {
  content: '';
  position: absolute;
  top: -40px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  border-radius: 2px;
  background: linear-gradient(90deg, #d4855e, #c9a96e);
}

/* 导航 */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(253, 250, 245, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(180, 160, 140, 0.2);
  transition: box-shadow 0.3s ease;
}
.site-header.scrolled {
  box-shadow: 0 2px 20px rgba(74, 55, 40, 0.08);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.15rem;
  text-decoration: none;
  color: #4a3728;
  letter-spacing: -0.3px;
  transition: opacity 0.3s;
}
.logo:hover {
  opacity: 0.8;
}
.logo-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  font-weight: 800;
  color: #fff;
  background: linear-gradient(135deg, #d4855e, #c9a96e);
  box-shadow: 0 3px 12px rgba(212, 133, 94, 0.3);
  letter-spacing: -0.5px;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}
.main-nav a {
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 500;
  color: #6b5a4a;
  transition: color 0.25s, transform 0.25s;
  position: relative;
  letter-spacing: 0.2px;
}
.main-nav a:hover {
  color: #d4855e;
}
.main-nav a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  border-radius: 1px;
  background: #d4855e;
  transition: width 0.3s cubic-bezier(0.25, 0.8, 0.25, 1.2);
}
.main-nav a:hover::after {
  width: 100%;
}
.nav-cta {
  padding: 9px 22px;
  border-radius: 25px;
  color: #fff !important;
  font-weight: 600;
  background: linear-gradient(135deg, #d4855e, #c0744d);
  box-shadow: 0 4px 14px rgba(212, 133, 94, 0.35);
  letter-spacing: 0.3px;
  transition: all 0.3s ease !important;
}
.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(212, 133, 94, 0.45) !important;
}
.nav-cta::after {
  display: none !important;
}
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  background: none;
  border: none;
}
.menu-toggle span {
  display: block;
  width: 26px;
  height: 2.5px;
  background: #4a3728;
  border-radius: 2px;
  transition: all 0.3s ease;
}

/* 首页Hero */
.hero {
  min-height: 70vh;
  display: flex;
  align-items: center;
  padding-top: 80px;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -120px;
  right: -180px;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(201, 169, 110, 0.12) 0%, transparent 70%);
  pointer-events: none;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: -80px;
  left: -100px;
  width: 360px;
  height: 360px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(138, 154, 107, 0.1) 0%, transparent 70%);
  pointer-events: none;
}
.hero-content {
  max-width: 720px;
  position: relative;
  z-index: 1;
}
.hero-eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 5px 16px;
  border-radius: 20px;
  margin-bottom: 18px;
  background: #f0e8da;
  color: #8a6d4b;
  letter-spacing: 1.5px;
  text-transform: uppercase;
}
.hero h1 {
  font-size: 3.2rem;
  line-height: 1.15;
  margin-bottom: 20px;
  font-weight: 800;
  letter-spacing: -1.5px;
  color: #3d2b1f;
}
.hero h1 span {
  background: linear-gradient(135deg, #d4855e, #c9a96e);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero p {
  font-size: 1.1rem;
  color: #7a6958;
  max-width: 560px;
  margin-bottom: 36px;
  line-height: 1.7;
}
.hero-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.hero-image {
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(74, 55, 40, 0.1);
  transition: transform 0.4s ease;
}
.hero-image:hover {
  transform: translateY(-6px);
}
.hero-image img {
  width: 100%;
  height: auto;
  display: block;
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 30px;
  border-radius: 25px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1.2);
  letter-spacing: 0.3px;
  font-size: 0.95rem;
}
.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, #d4855e, #c0744d);
  box-shadow: 0 4px 16px rgba(212, 133, 94, 0.35);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(212, 133, 94, 0.45);
}
.btn-outline {
  background: transparent;
  border: 2px solid #d4855e;
  color: #d4855e;
}
.btn-outline:hover {
  background: #d4855e;
  color: #fff;
  transform: translateY(-2px);
}

/* 标签/标题 */
.section-label {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 2.5px;
  margin-bottom: 12px;
  color: #8a9a6b;
  text-transform: uppercase;
}
.section-title {
  font-size: 2.2rem;
  margin-bottom: 14px;
  font-weight: 800;
  letter-spacing: -0.8px;
  color: #3d2b1f;
}
.section-desc {
  max-width: 600px;
  color: #7a6958;
  margin-bottom: 44px;
  font-size: 1.05rem;
  line-height: 1.7;
}

/* 卡片网格 */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}
.category-card {
  border-radius: 14px;
  padding: 30px 26px;
  background: #fff;
  border: 1px solid rgba(180, 160, 140, 0.25);
  transition: all 0.35s cubic-bezier(0.25, 0.8, 0.25, 1.2);
  position: relative;
  overflow: hidden;
}
.category-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, #d4855e, #c9a96e, #8a9a6b);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}
.category-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(74, 55, 40, 0.1);
  border-color: transparent;
}
.category-card:hover::before {
  transform: scaleX(1);
}
.card-icon {
  width: 50px;
  height: 50px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  font-size: 1.4rem;
  background: #f8f3ea;
  color: #d4855e;
  transition: all 0.3s ease;
}
.category-card:hover .card-icon {
  background: linear-gradient(135deg, #d4855e, #c9a96e);
  color: #fff;
  box-shadow: 0 6px 18px rgba(212, 133, 94, 0.3);
}
.card-link {
  font-weight: 600;
  font-size: 0.85rem;
  text-decoration: none;
  color: #d4855e;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap 0.3s;
}
.card-link:hover {
  gap: 10px;
}

/* 特性块 */
.feature-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}
.feature-image {
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 16px 40px rgba(74, 55, 40, 0.08);
  transition: transform 0.4s ease;
}
.feature-image:hover {
  transform: scale(1.02);
}
.feature-image img {
  width: 100%;
  height: auto;
  display: block;
}
.feature-text {
}
.feature-list {
  list-style: none;
}
.feature-list li {
  padding: 8px 0;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1rem;
  color: #5c4a3a;
}
.feature-list li::before {
  content: '✓';
  font-weight: 700;
  color: #8a9a6b;
  font-size: 1.1rem;
  flex-shrink: 0;
}

/* 数据条 */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}
.stat-item {
  padding: 28px 20px;
  border-radius: 14px;
  background: #fff;
  border: 1px solid rgba(180, 160, 140, 0.2);
  transition: all 0.35s ease;
}
.stat-item:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(74, 55, 40, 0.08);
  border-color: #d4855e;
}
.stat-number {
  font-size: 2.5rem;
  font-weight: 800;
  background: linear-gradient(135deg, #d4855e, #c9a96e);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -1px;
}
.stat-label {
  font-size: 0.9rem;
  color: #8c7b6b;
  margin-top: 6px;
  font-weight: 500;
}

/* 内容墙 */
.content-wall {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}
.content-wall-item {
  border-radius: 14px;
  overflow: hidden;
  background: #fff;
  border: 1px solid rgba(180, 160, 140, 0.2);
  transition: all 0.35s cubic-bezier(0.25, 0.8, 0.25, 1.2);
}
.content-wall-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 14px 36px rgba(74, 55, 40, 0.1);
  border-color: transparent;
}
.content-wall-item img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.content-wall-item:hover img {
  transform: scale(1.05);
}
.content-wall-body {
  padding: 22px 20px;
}
.content-wall-body h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: #3d2b1f;
  margin-bottom: 8px;
}
.content-wall-body p {
  font-size: 0.9rem;
  color: #7a6958;
  line-height: 1.6;
}

/* FAQ */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}
.faq-item {
  border: 1px solid rgba(180, 160, 140, 0.25);
  border-radius: 12px;
  margin-bottom: 10px;
  overflow: hidden;
  cursor: pointer;
  background: #fff;
  transition: all 0.3s ease;
}
.faq-item:hover {
  border-color: #d4855e;
}
.faq-item .faq-question {
  padding: 18px 22px;
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: #3d2b1f;
  font-size: 1rem;
}
.faq-item .faq-question::after {
  content: '+';
  font-size: 1.3rem;
  color: #d4855e;
  transition: transform 0.35s ease;
  font-weight: 400;
}
.faq-item.open .faq-question::after {
  transform: rotate(45deg);
}
.faq-item .faq-answer {
  padding: 0 22px 18px;
  display: none;
  color: #7a6958;
  line-height: 1.7;
}
.faq-item.open .faq-answer {
  display: block;
}
.faq-item.open {
  border-color: #d4855e;
  box-shadow: 0 4px 16px rgba(212, 133, 94, 0.1);
}

/* CTA横幅 */
.cta-banner {
  padding: 60px 24px;
  text-align: center;
  border-radius: 16px;
  color: #fff;
  background: linear-gradient(135deg, #d4855e 0%, #c0744d 30%, #b8905a 100%);
  position: relative;
  overflow: hidden;
}
.cta-banner::before {
  content: '';
  position: absolute;
  top: -60px;
  right: -60px;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.06);
  pointer-events: none;
}
.cta-banner::after {
  content: '';
  position: absolute;
  bottom: -40px;
  left: -40px;
  width: 140px;
  height: 140px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.05);
  pointer-events: none;
}
.cta-banner h2 {
  color: #fff;
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  position: relative;
  z-index: 1;
}
.cta-banner p {
  color: rgba(255, 255, 255, 0.9);
  margin: 12px auto 28px;
  max-width: 500px;
  position: relative;
  z-index: 1;
}
.cta-banner .btn-primary {
  background: #fff;
  color: #d4855e;
  box-shadow: 0 4px 18px rgba(0, 0, 0, 0.15);
  position: relative;
  z-index: 1;
}
.cta-banner .btn-primary:hover {
  background: #fdfaf5;
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.2);
}

/* 页脚 */
.site-footer {
  padding: 56px 0 28px;
  background: #f5f0e8;
  color: #5c4a3a;
  border-top: 1px solid rgba(180, 160, 140, 0.2);
}
.site-footer .container {
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
}
.footer-brand {
}
.footer-brand h4 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: #3d2b1f;
}
.footer-brand p {
  font-size: 0.9rem;
  color: #7a6958;
  line-height: 1.7;
}
.footer-col {
}
.footer-col h5 {
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 14px;
  color: #3d2b1f;
  text-transform: uppercase;
  letter-spacing: 1px;
}
.footer-col a {
  display: block;
  text-decoration: none;
  color: #6b5a4a;
  font-size: 0.88rem;
  padding: 4px 0;
  transition: color 0.25s;
}
.footer-col a:hover {
  color: #d4855e;
}
.footer-bottom {
  border-top: 1px solid rgba(180, 160, 140, 0.2);
  margin-top: 40px;
  padding-top: 20px;
  text-align: center;
  font-size: 0.85rem;
  color: #8c7b6b;
}

/* 工具类 */
.text-accent {
  color: #d4855e;
}
.text-center {
  text-align: center;
}
.seo-description {
  max-width: 600px;
  margin: 0 auto 48px;
  color: #7a6958;
  font-size: 0.95rem;
  line-height: 1.7;
}
.mt-0 {
  margin-top: 0;
}
.mb-0 {
  margin-bottom: 0;
}

/* 响应式 */
@media (max-width: 768px) {
  .feature-block {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .stats-bar {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 28px;
  }
  .main-nav {
    display: none;
  }
  .menu-toggle {
    display: flex;
  }
  .main-nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 68px;
    left: 0;
    width: 100%;
    background: rgba(253, 250, 245, 0.98);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding: 20px 24px;
    gap: 16px;
    border-bottom: 1px solid rgba(180, 160, 140, 0.2);
    box-shadow: 0 8px 24px rgba(74, 55, 40, 0.06);
  }
  .main-nav.open a {
    font-size: 1rem;
    padding: 6px 0;
  }
  .hero h1 {
    font-size: 2.2rem;
  }
  .hero p {
    font-size: 1rem;
  }
  .section-title {
    font-size: 1.7rem;
  }
  .cta-banner h2 {
    font-size: 1.6rem;
  }
  .section {
    padding: 56px 0;
  }
}
@media (max-width: 480px) {
  .cards-grid,
  .content-wall,
  .stats-bar {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .hero-buttons {
    flex-direction: column;
    gap: 12px;
  }
  .hero h1 {
    font-size: 1.8rem;
  }
  .hero {
    min-height: 60vh;
    padding-top: 68px;
  }
  .stat-number {
    font-size: 2rem;
  }
  .section-title {
    font-size: 1.5rem;
  }
  .btn {
    padding: 12px 24px;
    font-size: 0.9rem;
  }
  .header-inner {
    padding: 0 16px;
  }
  .container {
    padding: 0 16px;
  }
}