:root {
  --color-primary: #E8634F;
  --color-primary-light: #FDE8E4;
  --color-primary-dark: #D04A38;
  --color-secondary: #2EC4B6;
  --color-secondary-light: #E4F8F6;
  --color-secondary-dark: #1FA89B;
  --color-accent: #F4A261;
  --color-accent-light: #FEF0E4;
  --color-accent-dark: #E0893F;
  --color-bg: #FCF7F2;
  --color-bg-alt: #F6EFE7;
  --color-card: #FFFFFF;
  --color-text: #2D3748;
  --color-text-light: #7A8599;
  --color-text-muted: #A0AAB8;
  --color-border: #E8E0D8;
  --color-border-light: #F2ECE6;
  --color-shadow: rgba(232, 99, 79, 0.08);
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --shadow-sm: 0 2px 10px rgba(45, 55, 72, 0.04), 0 1px 3px rgba(45, 55, 72, 0.02);
  --shadow-md: 0 8px 28px rgba(45, 55, 72, 0.06), 0 3px 8px rgba(45, 55, 72, 0.03);
  --shadow-lg: 0 20px 48px rgba(45, 55, 72, 0.08), 0 8px 20px rgba(45, 55, 72, 0.04);
  --shadow-glow: 0 8px 32px var(--color-shadow);
  --font-weight-bold: 700;
  --font-weight-extrabold: 800;
  --font-weight-black: 900;
  --transition: 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

body {
  font-family: system-ui, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  overflow-x: hidden;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* 滚动条美化 */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: var(--color-bg-alt);
}
::-webkit-scrollbar-thumb {
  background: var(--color-primary);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--color-primary-dark);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 100px 0;
  position: relative;
}

.section:nth-child(even) {
  background: var(--color-bg-alt);
}

/* 装饰性背景元素 */
.section::before {
  content: '';
  position: absolute;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--color-primary-light) 0%, transparent 70%);
  opacity: 0.4;
  pointer-events: none;
}
.section:nth-child(odd)::before {
  top: -80px;
  right: -80px;
}
.section:nth-child(even)::before {
  bottom: -80px;
  left: -80px;
  background: radial-gradient(circle, var(--color-secondary-light) 0%, transparent 70%);
}

/* 导航 */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(252, 247, 242, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border-light);
  transition: var(--transition);
}

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

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: var(--font-weight-black);
  font-size: 1.3rem;
  text-decoration: none;
  color: var(--color-text);
  letter-spacing: -0.5px;
  position: relative;
}

.logo-icon {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: #fff;
  font-weight: var(--font-weight-bold);
  box-shadow: 0 4px 12px rgba(232, 99, 79, 0.3);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.main-nav a {
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--color-text);
  transition: var(--transition);
  position: relative;
  padding: 4px 0;
  letter-spacing: 0.3px;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2.5px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  transition: var(--transition);
}

.main-nav a:hover {
  color: var(--color-primary);
}

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

.main-nav .nav-cta {
  padding: 10px 24px;
  border-radius: 50px;
  color: #fff !important;
  font-weight: 600;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  box-shadow: 0 4px 16px rgba(232, 99, 79, 0.25);
  transition: var(--transition);
}

.main-nav .nav-cta::after {
  display: none;
}

.main-nav .nav-cta:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 8px 28px rgba(232, 99, 79, 0.35);
}

.menu-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border: none;
  background: var(--color-primary-light);
  border-radius: var(--radius-sm);
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  transition: var(--transition);
}

.menu-toggle span {
  display: block;
  width: 20px;
  height: 2.5px;
  background: var(--color-primary);
  border-radius: 2px;
  transition: var(--transition);
}

.menu-toggle:hover {
  background: var(--color-primary);
}
.menu-toggle:hover span {
  background: #fff;
}

/* Hero */
.hero {
  min-height: 85vh;
  display: flex;
  align-items: center;
  position: relative;
  padding-top: 72px;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -20%;
  right: -10%;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--color-primary-light) 0%, transparent 60%);
  opacity: 0.6;
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -15%;
  left: -5%;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--color-secondary-light) 0%, transparent 60%);
  opacity: 0.5;
  pointer-events: none;
}

.hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-content {
  max-width: 640px;
}

.hero-eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  padding: 6px 18px;
  border-radius: 50px;
  margin-bottom: 20px;
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-accent-light));
  color: var(--color-primary-dark);
  letter-spacing: 1.5px;
  text-transform: uppercase;
  border: 1px solid rgba(232, 99, 79, 0.1);
}

.hero h1 {
  font-size: 3.2rem;
  font-weight: var(--font-weight-black);
  line-height: 1.1;
  margin-bottom: 20px;
  color: var(--color-text);
  letter-spacing: -1px;
}

.hero h1 span {
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.1rem;
  color: var(--color-text-light);
  max-width: 520px;
  margin-bottom: 36px;
  line-height: 1.7;
}

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

.hero-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  transform: perspective(1000px) rotateY(-3deg);
  transition: var(--transition);
  border: 2px solid var(--color-border-light);
}

.hero-image:hover {
  transform: perspective(1000px) rotateY(0deg) translateY(-4px);
  box-shadow: var(--shadow-lg), 0 0 40px var(--color-shadow);
}

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

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  border-radius: 50px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: var(--transition);
  font-size: 0.95rem;
  letter-spacing: 0.3px;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  box-shadow: 0 4px 20px rgba(232, 99, 79, 0.3);
}

.btn-primary:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 8px 32px rgba(232, 99, 79, 0.4);
}

.btn-primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.15), transparent);
  transition: 0.6s;
}

.btn-primary:hover::before {
  left: 100%;
}

.btn-outline {
  background: transparent;
  border: 2px solid var(--color-border);
  color: var(--color-text);
}

.btn-outline:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-primary-light);
  transform: translateY(-2px);
}

/* 标签/标题 */
.section-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 3px;
  margin-bottom: 16px;
  text-transform: uppercase;
  color: var(--color-primary);
  background: var(--color-primary-light);
  padding: 4px 16px;
  border-radius: 50px;
  border: 1px solid rgba(232, 99, 79, 0.08);
}

.section-title {
  font-size: 2.4rem;
  font-weight: var(--font-weight-black);
  margin-bottom: 16px;
  color: var(--color-text);
  letter-spacing: -0.5px;
  line-height: 1.2;
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 60px;
  height: 4px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
}

.text-center .section-title::after {
  left: 50%;
  transform: translateX(-50%);
}

.section-desc {
  max-width: 600px;
  color: var(--color-text-light);
  margin-bottom: 48px;
  font-size: 1.05rem;
  line-height: 1.7;
}

.text-center .section-desc {
  margin-left: auto;
  margin-right: auto;
}

/* 卡片网格 */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 28px;
}

.category-card {
  border-radius: var(--radius-md);
  padding: 32px 28px;
  background: var(--color-card);
  border: 1px solid var(--color-border-light);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.category-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 0;
  background: linear-gradient(180deg, var(--color-primary), var(--color-accent));
  transition: var(--transition);
  border-radius: 0 2px 2px 0;
}

.category-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: transparent;
}

.category-card:hover::before {
  height: 100%;
}

.card-icon {
  width: 54px;
  height: 54px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 1.4rem;
  background: var(--color-primary-light);
  color: var(--color-primary);
  transition: var(--transition);
}

.category-card:hover .card-icon {
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: #fff;
  transform: scale(1.05) rotate(-3deg);
}

.category-card h3 {
  font-size: 1.15rem;
  font-weight: var(--font-weight-bold);
  margin-bottom: 10px;
}

.category-card p {
  color: var(--color-text-light);
  font-size: 0.9rem;
  line-height: 1.6;
  margin-bottom: 16px;
}

.card-link {
  font-weight: 600;
  font-size: 0.85rem;
  text-decoration: none;
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition);
}

.card-link::after {
  content: '→';
  transition: var(--transition);
}

.card-link:hover {
  color: var(--color-primary-dark);
  gap: 10px;
}

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

/* 特性块 */
.feature-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.feature-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 2px solid var(--color-border-light);
  transition: var(--transition);
}

.feature-image:hover {
  transform: scale(1.01);
  box-shadow: var(--shadow-lg);
}

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

.feature-text {
  padding: 16px 0;
}

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

.feature-text p {
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: 20px;
}

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

.feature-list li {
  padding: 10px 0;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.95rem;
  color: var(--color-text);
  border-bottom: 1px solid var(--color-border-light);
}

.feature-list li:last-child {
  border-bottom: none;
}

.feature-list li::before {
  content: '✦';
  font-weight: 700;
  color: var(--color-secondary);
  font-size: 0.8rem;
}

/* 数据条 */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
  text-align: center;
}

.stat-item {
  padding: 32px 20px;
  border-radius: var(--radius-md);
  background: var(--color-card);
  border: 1px solid var(--color-border-light);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.stat-item::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 20%;
  width: 60%;
  height: 3px;
  border-radius: 2px 2px 0 0;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  opacity: 0;
  transition: var(--transition);
}

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

.stat-item:hover::after {
  opacity: 1;
}

.stat-number {
  font-size: 2.6rem;
  font-weight: var(--font-weight-black);
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: 4px;
}

.stat-label {
  font-size: 0.9rem;
  color: var(--color-text-light);
  margin-top: 6px;
  font-weight: 500;
}

/* 内容墙 */
.content-wall {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 28px;
}

.content-wall-item {
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--color-card);
  border: 1px solid var(--color-border-light);
  transition: var(--transition);
}

.content-wall-item:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: transparent;
}

.content-wall-item img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  transition: var(--transition);
}

.content-wall-item:hover img {
  transform: scale(1.03);
}

.content-wall-body {
  padding: 24px;
}

.content-wall-body h4 {
  font-size: 1.1rem;
  font-weight: var(--font-weight-bold);
  margin-bottom: 8px;
}

.content-wall-body p {
  color: var(--color-text-light);
  font-size: 0.9rem;
  line-height: 1.6;
  margin-bottom: 12px;
}

.content-wall-body .card-link {
  margin-top: 8px;
}

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

.faq-item {
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  margin-bottom: 10px;
  overflow: hidden;
  cursor: pointer;
  background: var(--color-card);
  transition: var(--transition);
}

.faq-item:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

.faq-item .faq-question {
  padding: 20px 24px;
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 1rem;
  color: var(--color-text);
  transition: var(--transition);
}

.faq-item .faq-question::after {
  content: '+';
  font-size: 1.4rem;
  font-weight: 300;
  color: var(--color-primary);
  transition: var(--transition);
}

.faq-item.open .faq-question::after {
  content: '−';
  transform: rotate(90deg);
}

.faq-item .faq-answer {
  padding: 0 24px 20px;
  display: none;
  color: var(--color-text-light);
  line-height: 1.7;
  font-size: 0.95rem;
}

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

@keyframes faqSlide {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* CTA横幅 */
.cta-banner {
  padding: 64px 40px;
  text-align: center;
  border-radius: var(--radius-xl);
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: #fff;
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: rgba(255,255,255,0.05);
  pointer-events: none;
}

.cta-banner::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: rgba(255,255,255,0.03);
  pointer-events: none;
}

.cta-banner h2 {
  color: #fff;
  font-size: 2rem;
  font-weight: var(--font-weight-black);
  margin-bottom: 12px;
  position: relative;
  z-index: 1;
}

.cta-banner h2::after {
  display: none;
}

.cta-banner p {
  color: rgba(255,255,255,0.85);
  max-width: 500px;
  margin: 0 auto 28px;
  font-size: 1.05rem;
  position: relative;
  z-index: 1;
}

.cta-banner .btn {
  background: #fff;
  color: var(--color-primary);
  box-shadow: 0 4px 20px rgba(0,0,0,0.1);
  position: relative;
  z-index: 1;
}

.cta-banner .btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(0,0,0,0.15);
}

/* 页脚 */
.site-footer {
  padding: 72px 0 32px;
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border-light);
  position: relative;
}

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

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.footer-brand .logo {
  font-size: 1.1rem;
}

.footer-brand .logo-icon {
  width: 34px;
  height: 34px;
  font-size: 0.9rem;
}

.footer-brand p {
  color: var(--color-text-light);
  font-size: 0.9rem;
  line-height: 1.7;
  max-width: 280px;
}

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

.footer-col h5 {
  font-size: 0.85rem;
  font-weight: var(--font-weight-bold);
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--color-text);
  margin-bottom: 8px;
}

.footer-col a {
  color: var(--color-text-light);
  text-decoration: none;
  font-size: 0.9rem;
  transition: var(--transition);
}

.footer-col a:hover {
  color: var(--color-primary);
  transform: translateX(4px);
}

.footer-bottom {
  border-top: 1px solid var(--color-border);
  margin-top: 48px;
  padding-top: 24px;
  text-align: center;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* 工具类 */
.text-accent {
  color: var(--color-primary);
  font-weight: var(--font-weight-bold);
}

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

.seo-description {
  max-width: 600px;
  margin: 0 auto 48px;
  color: var(--color-text-light);
  font-size: 1rem;
  line-height: 1.7;
}

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

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

/* 响应式 */
@media (max-width: 1024px) {
  .hero .container {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .hero-content {
    max-width: 100%;
  }
  .hero h1 {
    font-size: 2.6rem;
  }
  .hero-image {
    transform: none;
  }
  .hero-image:hover {
    transform: translateY(-4px);
  }
  .feature-block {
    gap: 40px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr 1fr;
    gap: 32px;
  }
  .footer-grid > :first-child {
    grid-column: 1 / -1;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 72px 0;
  }
  .hero {
    min-height: auto;
    padding: 100px 0 60px;
  }
  .hero h1 {
    font-size: 2rem;
  }
  .hero p {
    font-size: 1rem;
  }
  .section-title {
    font-size: 1.8rem;
  }
  .feature-block {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .feature-text {
    order: 2;
  }
  .feature-image {
    order: 1;
  }
  .stats-bar {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
  .stat-number {
    font-size: 2rem;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 28px;
  }
  .main-nav {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    width: 100%;
    background: var(--color-bg);
    padding: 20px 24px;
    flex-direction: column;
    gap: 8px;
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
  }
  .main-nav.open {
    display: flex;
  }
  .main-nav a {
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    width: 100%;
  }
  .main-nav a::after {
    display: none;
  }
  .main-nav a:hover {
    background: var(--color-primary-light);
  }
  .main-nav .nav-cta {
    margin-top: 8px;
    text-align: center;
  }
  .menu-toggle {
    display: flex;
  }
  .cta-banner {
    padding: 48px 24px;
  }
  .cta-banner h2 {
    font-size: 1.5rem;
  }
  .hero-buttons {
    flex-direction: column;
    width: 100%;
  }
  .hero-buttons .btn {
    width: 100%;
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .cards-grid,
  .content-wall,
  .stats-bar {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .hero h1 {
    font-size: 1.7rem;
  }
  .section-title {
    font-size: 1.5rem;
  }
  .header-inner {
    height: 64px;
  }
  .logo {
    font-size: 1.1rem;
  }
  .logo-icon {
    width: 34px;
    height: 34px;
    font-size: 0.9rem;
  }
}