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

::selection {
  background: #fdf0ea;
  color: #3d2c2a;
}

body {
  font-family: system-ui, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  overflow-x: hidden;
  background: #faf7f2;
  color: #3d2c2a;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* 核心布局 */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 80px 0;
}

.section:nth-child(even) {
  background: #f4efe8;
}

/* 导航 */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(250, 247, 242, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid #e8e0d8;
  transition: box-shadow 0.3s ease;
}

.site-header.scrolled {
  box-shadow: 0 2px 24px rgba(198, 123, 92, 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: 8px;
  font-weight: 700;
  font-size: 1.2rem;
  text-decoration: none;
  color: #3d2c2a;
  letter-spacing: -0.01em;
}

.logo-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: #c67b5c;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  font-weight: 700;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 24px;
  list-style: none;
}

.main-nav a {
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  color: #6b5d5a;
  transition: color 0.2s ease;
  position: relative;
}

.main-nav a:hover {
  color: #c67b5c;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: #c67b5c;
  border-radius: 1px;
  transition: width 0.25s ease;
}

.main-nav a:hover::after {
  width: 100%;
}

.nav-cta {
  padding: 8px 20px;
  border-radius: 10px;
  color: #fff !important;
  font-weight: 600;
  background: #c67b5c;
  transition: background 0.2s ease, transform 0.2s ease !important;
}

.nav-cta:hover {
  background: #b05d44;
  transform: translateY(-1px);
}

.nav-cta::after {
  display: none !important;
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  width: 40px;
  height: 40px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  padding: 8px;
  border-radius: 8px;
  transition: background 0.2s ease;
}

.menu-toggle:hover {
  background: #f4efe8;
}

.menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: #3d2c2a;
  border-radius: 1px;
  transition: transform 0.25s ease, opacity 0.25s ease;
}

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

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

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

/* Hero */
.hero {
  min-height: 70vh;
  display: flex;
  align-items: center;
  padding-top: 68px;
}

.hero-content {
  max-width: 720px;
}

.hero-eyebrow {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 600;
  padding: 4px 14px;
  border-radius: 20px;
  margin-bottom: 16px;
  background: #e8f5ed;
  color: #5a8f6a;
  letter-spacing: 0.03em;
}

.hero h1 {
  font-size: 2.8rem;
  line-height: 1.2;
  margin-bottom: 20px;
  color: #3d2c2a;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.hero h1 .text-accent {
  color: #c67b5c;
}

.hero p {
  font-size: 1.1rem;
  opacity: 0.7;
  max-width: 560px;
  margin-bottom: 32px;
  color: #6b5d5a;
  line-height: 1.7;
}

.hero-buttons {
  display: flex;
  gap: 14px;
}

.hero-image {
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 8px 40px rgba(198, 123, 92, 0.13);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.hero-image:hover {
  transform: translateY(-4px);
  box-shadow: 0 14px 48px rgba(198, 123, 92, 0.18);
}

.hero-image img {
  width: 100%;
  height: auto;
  display: block;
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 10px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: all 0.25s ease;
  font-size: 0.95rem;
  letter-spacing: 0.01em;
}

.btn-primary {
  color: #fff;
  background: #c67b5c;
  box-shadow: 0 2px 12px rgba(198, 123, 92, 0.25);
}

.btn-primary:hover {
  background: #b05d44;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(198, 123, 92, 0.35);
}

.btn-outline {
  background: transparent;
  border: 1.5px solid #c67b5c;
  color: #c67b5c;
}

.btn-outline:hover {
  background: #c67b5c;
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(198, 123, 92, 0.25);
}

/* 标签/标题 */
.section-label {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 2px;
  margin-bottom: 12px;
  color: #5a8f6a;
  text-transform: uppercase;
  position: relative;
}

.section-label::after {
  content: '';
  display: block;
  width: 32px;
  height: 3px;
  background: #7ec8a0;
  border-radius: 2px;
  margin-top: 6px;
}

.section-title {
  font-size: 2rem;
  margin-bottom: 14px;
  color: #3d2c2a;
  font-weight: 750;
  letter-spacing: -0.015em;
  line-height: 1.25;
}

.section-desc {
  max-width: 600px;
  opacity: 0.7;
  margin-bottom: 40px;
  color: #6b5d5a;
  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: 28px;
  border: 1px solid #e8e0d8;
  transition: all 0.3s ease;
  background: #fff;
  position: relative;
  overflow: hidden;
}

.category-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, #c67b5c, #7ec8a0);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.category-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 32px rgba(198, 123, 92, 0.1);
  border-color: #d4c8bb;
}

.category-card:hover::before {
  opacity: 1;
}

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  font-size: 1.3rem;
  background: #fdf0ea;
  color: #c67b5c;
}

.card-link {
  font-weight: 600;
  font-size: 0.85rem;
  text-decoration: none;
  color: #c67b5c;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap 0.25s ease, color 0.2s ease;
}

.card-link:hover {
  gap: 8px;
  color: #b05d44;
}

.card-link::after {
  content: '→';
  transition: transform 0.25s ease;
}

.card-link:hover::after {
  transform: translateX(4px);
}

/* 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 6px 28px rgba(198, 123, 92, 0.1);
  transition: transform 0.3s ease;
}

.feature-image:hover {
  transform: scale(1.02);
}

.feature-image img {
  width: 100%;
  height: auto;
  display: block;
}

.feature-text {
  color: #3d2c2a;
}

.feature-list {
  list-style: none;
}

.feature-list li {
  padding: 6px 0;
  display: flex;
  align-items: center;
  gap: 8px;
  color: #6b5d5a;
}

.feature-list li::before {
  content: '✓';
  font-weight: 700;
  color: #7ec8a0;
  font-size: 1.1rem;
}

/* 数据条 */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}

.stat-item {
  padding: 24px;
  border-radius: 14px;
  border: 1px solid #e8e0d8;
  background: #fff;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.stat-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(198, 123, 92, 0.08);
}

.stat-number {
  font-size: 2.2rem;
  font-weight: 800;
  color: #c67b5c;
  letter-spacing: -0.02em;
}

.stat-label {
  font-size: 0.9rem;
  opacity: 0.6;
  margin-top: 6px;
  color: #6b5d5a;
}

/* 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;
  border: 1px solid #e8e0d8;
  transition: all 0.3s ease;
  background: #fff;
}

.content-wall-item:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 32px rgba(198, 123, 92, 0.1);
  border-color: #d4c8bb;
}

.content-wall-item img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease;
}

.content-wall-item:hover img {
  transform: scale(1.05);
}

.content-wall-body {
  padding: 20px;
}

.content-wall-body h4 {
  color: #3d2c2a;
  font-weight: 650;
  margin-bottom: 8px;
}

.content-wall-body p {
  color: #6b5d5a;
  font-size: 0.9rem;
  opacity: 0.8;
}

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

.faq-item {
  border: 1px solid #e8e0d8;
  border-radius: 12px;
  margin-bottom: 8px;
  overflow: hidden;
  cursor: pointer;
  background: #fff;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.faq-item:hover {
  border-color: #d4c8bb;
  box-shadow: 0 2px 12px rgba(198, 123, 92, 0.06);
}

.faq-item .faq-question {
  padding: 16px 20px;
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: #3d2c2a;
  user-select: none;
}

.faq-item .faq-question::after {
  content: '+';
  font-size: 1.3rem;
  font-weight: 400;
  color: #c67b5c;
  transition: transform 0.3s ease;
}

.faq-item.open .faq-question::after {
  content: '−';
  transform: rotate(180deg);
}

.faq-item .faq-answer {
  padding: 0 20px 16px;
  display: none;
  opacity: 0.7;
  color: #6b5d5a;
  line-height: 1.7;
}

.faq-item.open .faq-answer {
  display: block;
  animation: faqFadeIn 0.3s ease;
}

@keyframes faqFadeIn {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 0.7;
    transform: translateY(0);
  }
}

/* CTA横幅 */
.cta-banner {
  padding: 56px 24px;
  text-align: center;
  border-radius: 16px;
  color: #fff;
  background: #5a8f6a;
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: '';
  position: absolute;
  top: -60px;
  right: -60px;
  width: 200px;
  height: 200px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 50%;
}

.cta-banner::after {
  content: '';
  position: absolute;
  bottom: -40px;
  left: -40px;
  width: 140px;
  height: 140px;
  background: rgba(255, 255, 255, 0.04);
  border-radius: 50%;
}

.cta-banner h2 {
  color: #fff;
  position: relative;
  z-index: 1;
}

.cta-banner .section-desc {
  color: rgba(255, 255, 255, 0.85);
  position: relative;
  z-index: 1;
  margin-left: auto;
  margin-right: auto;
}

.cta-banner .btn-primary {
  background: #fff;
  color: #5a8f6a;
  position: relative;
  z-index: 1;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
}

.cta-banner .btn-primary:hover {
  background: #faf7f2;
  color: #4a7c59;
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.15);
}

/* 页脚 */
.site-footer {
  padding: 56px 0 28px;
  background: #ede5db;
  color: #3d2c2a;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
}

.footer-brand {
  color: #6b5d5a;
  line-height: 1.7;
}

.footer-brand .logo {
  margin-bottom: 12px;
}

.footer-col h4 {
  color: #3d2c2a;
  font-weight: 650;
  margin-bottom: 14px;
  font-size: 0.95rem;
}

.footer-col a {
  display: block;
  color: #6b5d5a;
  text-decoration: none;
  padding: 4px 0;
  font-size: 0.9rem;
  transition: color 0.2s ease;
}

.footer-col a:hover {
  color: #c67b5c;
}

.footer-bottom {
  border-top: 1px solid #dcd3c8;
  margin-top: 40px;
  padding-top: 20px;
  text-align: center;
  font-size: 0.85rem;
  color: #8b7d76;
}

/* 工具类 */
.text-accent {
  color: #c67b5c;
}

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

.seo-description {
  max-width: 600px;
  margin: 0 auto 48px;
  opacity: 0.7;
  color: #6b5d5a;
  line-height: 1.7;
  font-size: 0.95rem;
}

.mt-0 {
  margin-top: 0;
}

.mb-0 {
  margin-bottom: 0;
}

/* 链接通用样式 */
a {
  color: #c67b5c;
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: #b05d44;
}

/* 响应式 */
@media (max-width: 768px) {
  .feature-block {
    grid-template-columns: 1fr;
    gap: 32px;
  }

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

  .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: #faf7f2;
    padding: 20px 24px;
    border-bottom: 1px solid #e8e0d8;
    box-shadow: 0 8px 24px rgba(198, 123, 92, 0.08);
    gap: 8px;
  }

  .main-nav.open a {
    padding: 10px 0;
    font-size: 1rem;
    border-bottom: 1px solid #f4efe8;
  }

  .main-nav.open .nav-cta {
    text-align: center;
    margin-top: 8px;
    border-bottom: none;
  }

  .hero h1 {
    font-size: 2rem;
  }

  .hero p {
    font-size: 1rem;
  }

  .section-title {
    font-size: 1.6rem;
  }

  .cta-banner {
    padding: 40px 20px;
  }

  .hero {
    min-height: 60vh;
    padding-top: 88px;
  }
}

@media (max-width: 480px) {
  .cards-grid,
  .content-wall,
  .stats-bar {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

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

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

  .hero h1 {
    font-size: 1.7rem;
  }

  .section {
    padding: 50px 0;
  }

  .section-title {
    font-size: 1.4rem;
  }

  .feature-block {
    gap: 24px;
  }

  .container {
    padding: 0 16px;
  }

  .header-inner {
    padding: 0 16px;
  }

  .stat-number {
    font-size: 1.8rem;
  }
}