:root {
  --primary: #FF6B5E;
  --primary-dark: #E85D4A;
  --secondary: #2A9D8F;
  --accent: #FFD151;
  --bg-warm: #FEF9F3;
  --bg-soft: #EDF7F6;
  --text-dark: #393E46;
  --text-muted: #8B8E93;
  --border-light: rgba(62, 193, 200, 0.15);
  --shadow-sm: 0 4px 16px rgba(62, 193, 200, 0.08);
  --shadow-md: 0 12px 36px rgba(255, 107, 94, 0.12);
  --shadow-lg: 0 24px 60px rgba(255, 107, 94, 0.18);
}

*, *::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(--bg-warm);
  color: var(--text-dark);
  line-height: 1.6;
}

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

.section {
  padding: 80px 0;
  position: relative;
}

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

/* ========== 导航 ========== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(254, 249, 243, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-light);
  box-shadow: 0 1px 20px rgba(62, 193, 200, 0.05);
}

.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: 800;
  font-size: 1.3rem;
  text-decoration: none;
  color: var(--text-dark);
  letter-spacing: 1px;
}

.logo-icon {
  width: 38px;
  height: 38px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  font-size: 1.1rem;
  box-shadow: 0 4px 12px rgba(255, 107, 94, 0.3);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.main-nav a {
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-dark);
  position: relative;
  transition: 0.2s;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
  transition: width 0.3s;
}

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

.nav-cta {
  padding: 8px 22px;
  border-radius: 40px;
  color: #fff !important;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  font-weight: 600;
  box-shadow: 0 4px 14px rgba(255, 107, 94, 0.35);
}

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

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255, 107, 94, 0.4);
  color: #fff !important;
}

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  border: 1px solid rgba(62, 193, 200, 0.3);
  background: transparent;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1.2rem;
  color: var(--text-dark);
}

/* ========== Hero ========== */
.hero {
  min-height: 70vh;
  display: flex;
  align-items: center;
  padding: 68px 0 40px;
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at 85% 20%, rgba(255, 209, 81, 0.15) 0%, transparent 45%),
    radial-gradient(circle at 15% 90%, rgba(62, 193, 200, 0.12) 0%, transparent 50%),
    var(--bg-warm);
}

.hero::before {
  content: '';
  position: absolute;
  width: 460px;
  height: 460px;
  border-radius: 62% 38% 46% 54% / 60% 38% 62% 40%;
  background: linear-gradient(135deg, rgba(255, 107, 94, 0.16), rgba(255, 209, 81, 0.2));
  top: -100px;
  right: -60px;
  animation: morph 10s ease-in-out infinite;
  z-index: 0;
}

.hero::after {
  content: '';
  position: absolute;
  width: 280px;
  height: 280px;
  border-radius: 44% 56% 58% 42% / 48% 40% 60% 52%;
  background: rgba(62, 193, 200, 0.1);
  bottom: -60px;
  left: 15%;
  animation: morph 14s ease-in-out infinite reverse;
  z-index: 0;
}

.hero .container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 48px;
  align-items: center;
  width: 100%;
  position: relative;
  z-index: 1;
}

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

.hero-eyebrow {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 700;
  padding: 4px 18px;
  border-radius: 30px;
  margin-bottom: 16px;
  background: rgba(62, 193, 200, 0.15);
  color: var(--secondary);
  letter-spacing: 1px;
}

.hero h1 {
  font-size: 3rem;
  line-height: 1.25;
  margin-bottom: 20px;
  font-weight: 800;
  color: var(--text-dark);
  letter-spacing: -1px;
}

.hero p {
  font-size: 1.05rem;
  opacity: 0.7;
  max-width: 560px;
  margin-bottom: 32px;
  line-height: 1.8;
}

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

.hero-image {
  border-radius: 28px 14px 28px 14px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  transform: rotate(2deg);
  position: relative;
}

.hero-image::before {
  content: '';
  position: absolute;
  top: -16px;
  left: -16px;
  width: 80px;
  height: 80px;
  background: rgba(255, 209, 81, 0.5);
  border-radius: 30px 10px 30px 10px;
  z-index: -1;
}

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

/* ========== 按钮 ========== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 30px;
  border-radius: 40px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  box-shadow: 0 4px 16px rgba(255, 107, 94, 0.3);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(255, 107, 94, 0.4);
}

.btn-outline {
  background: transparent;
  border: 1.5px solid var(--primary);
  color: var(--primary);
}

.btn-outline:hover {
  background: rgba(255, 107, 94, 0.08);
  transform: translateY(-3px);
}

/* ========== 标签/标题 ========== */
.section-label {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 2px;
  margin-bottom: 12px;
  color: var(--secondary);
  text-transform: uppercase;
}

.section-title {
  font-size: 2rem;
  margin-bottom: 14px;
  font-weight: 800;
  color: var(--text-dark);
  letter-spacing: -0.5px;
}

.section-desc {
  max-width: 600px;
  opacity: 0.7;
  margin-bottom: 40px;
  line-height: 1.8;
}

/* ========== 卡片网格 ========== */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}

.category-card {
  border-radius: 26px 18px 26px 18px;
  padding: 32px;
  background: #fff;
  border: 1px solid var(--border-light);
  transition: 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
  box-shadow: var(--shadow-sm);
}

.category-card:hover {
  transform: translateY(-6px) rotate(-1deg);
  box-shadow: var(--shadow-md);
  border-color: rgba(255, 107, 94, 0.25);
}

.card-icon {
  width: 54px;
  height: 54px;
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  font-size: 1.4rem;
  background: linear-gradient(135deg, rgba(255, 107, 94, 0.15), rgba(255, 209, 81, 0.15));
}

.card-link {
  font-weight: 600;
  font-size: 0.85rem;
  text-decoration: none;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: 0.2s;
}

.card-link::after {
  content: '→';
  transition: transform 0.2s;
}

.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: 28px 14px 28px 14px;
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.feature-image img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 0.5s;
}

.feature-image:hover img {
  transform: scale(1.03);
}

.feature-text {
  padding: 10px 0;
}

.feature-text h3 {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--text-dark);
  margin-bottom: 12px;
}

.feature-text p {
  opacity: 0.7;
  line-height: 1.8;
  margin-bottom: 16px;
}

.feature-list {
  list-style: none;
  margin-top: 16px;
}

.feature-list li {
  padding: 10px 0;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.95rem;
  font-weight: 500;
}

.feature-list li::before {
  content: '✦';
  font-weight: 700;
  color: var(--accent);
  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: 32px 20px;
  border-radius: 28px 18px 28px 18px;
  background: #fff;
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
  transition: 0.3s;
}

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

.stat-number {
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--primary);
  background: linear-gradient(135deg, var(--primary), var(--primary-dark), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

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

/* ========== 内容墙 ========== */
.content-wall {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.content-wall-item {
  border-radius: 24px 16px 24px 16px;
  overflow: hidden;
  background: #fff;
  border: 1px solid var(--border-light);
  transition: 0.3s;
}

.content-wall-item:hover {
  transform: translateY(-5px) rotate(0.5deg);
  box-shadow: var(--shadow-md);
}

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

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

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

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

.faq-item {
  border: 1px solid rgba(62, 193, 200, 0.2);
  border-radius: 20px 12px 20px 12px;
  margin-bottom: 10px;
  overflow: hidden;
  cursor: pointer;
  background: #fff;
  transition: 0.2s;
}

.faq-item:hover {
  border-color: rgba(255, 107, 94, 0.3);
}

.faq-item .faq-question {
  padding: 20px 24px;
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.95rem;
}

.faq-item .faq-question::after {
  content: '+';
  font-size: 1.4rem;
  color: var(--primary);
  transition: transform 0.3s;
}

.faq-item.open .faq-question::after {
  transform: rotate(45deg);
}

.faq-item .faq-answer {
  padding: 0 24px 18px;
  display: none;
  opacity: 0.7;
  font-size: 0.9rem;
  line-height: 1.8;
}

.faq-item.open .faq-answer {
  display: block;
}

/* ========== CTA横幅 ========== */
.cta-banner {
  padding: 64px 32px;
  text-align: center;
  border-radius: 32px 18px 32px 18px;
  background: linear-gradient(135deg, var(--primary), #FF8E5E, var(--primary-dark));
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
  color: #fff;
}

.cta-banner::before {
  content: '';
  position: absolute;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.15);
  top: -120px;
  right: -80px;
}

.cta-banner::after {
  content: '';
  position: absolute;
  width: 180px;
  height: 180px;
  border-radius: 40px 20px 40px 20px;
  background: rgba(255, 255, 255, 0.1);
  bottom: -50px;
  left: 60px;
  transform: rotate(30deg);
}

.cta-banner h2 {
  color: #fff;
  font-size: 1.8rem;
  font-weight: 800;
  margin-bottom: 12px;
  position: relative;
  z-index: 1;
}

.cta-banner p {
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 24px;
  position: relative;
  z-index: 1;
}

.cta-banner .btn-primary {
  background: #fff;
  color: var(--primary);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  position: relative;
  z-index: 1;
}

.cta-banner .btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.12);
}

/* ========== 页脚 ========== */
.site-footer {
  padding: 56px 0 28px;
  background: var(--bg-warm);
  border-top: 1px solid var(--border-light);
}

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

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

.footer-brand .logo {
  margin-bottom: 16px;
}

.footer-brand p {
  opacity: 0.6;
  font-size: 0.9rem;
  line-height: 1.7;
  max-width: 280px;
}

.footer-col h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text-dark);
}

.footer-col a {
  display: block;
  padding: 6px 0;
  text-decoration: none;
  color: inherit;
  opacity: 0.7;
  transition: 0.2s;
  font-size: 0.9rem;
}

.footer-col a:hover {
  opacity: 1;
  color: var(--primary);
}

.footer-bottom {
  border-top: 1px solid var(--border-light);
  margin-top: 40px;
  padding-top: 20px;
  text-align: center;
  font-size: 0.85rem;
  opacity: 0.6;
}

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

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

.seo-description {
  max-width: 600px;
  margin: 0 auto 48px;
  opacity: 0.7;
  line-height: 1.8;
}

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

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

/* ========== 动画 ========== */
@keyframes morph {
  0%, 100% {
    border-radius: 62% 38% 46% 54% / 60% 38% 62% 40%;
    transform: rotate(0deg);
  }
  50% {
    border-radius: 40% 60% 56% 44% / 44% 55% 45% 56%;
    transform: rotate(3deg);
  }
}

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

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

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

  .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: var(--bg-warm);
    padding: 20px 24px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.06);
    gap: 16px;
    align-items: flex-start;
  }

  .hero {
    padding-top: 100px;
  }

  .hero h1 {
    font-size: 2.2rem;
  }

  .hero .container {
    padding-top: 20px;
  }

  .section {
    padding: 60px 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;
  }

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

  .stat-number {
    font-size: 2rem;
  }

  .cta-banner {
    padding: 48px 20px;
  }

  .cta-banner h2 {
    font-size: 1.4rem;
  }
}