```css
/* ==========================================
   原神本子 · 和风纸艺设计系统
   樱花浮动 · 纸片层叠 · 粉彩梦境
   ========================================== */

:root {
  --primary: #FF6B8A;
  --primary-light: #FFB7C5;
  --primary-lighter: #FFF0F3;
  --secondary: #A8C5A0;
  --accent: #F5C746;
  --bg-cream: #FFF8F3;
  --bg-pink: #FFF0F3;
  --text-dark: #3D3D3D;
  --text-muted: #9B8B8B;
  --border-pink: #F5E0E4;
  --shadow-soft: 0 8px 30px rgba(255, 107, 138, 0.10);
  --shadow-hover: 0 16px 44px rgba(255, 107, 138, 0.18);
  --radius: 18px;
  --radius-sm: 12px;
}

/* ========== 基础重置 ========== */
*, *::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-cream);
  color: var(--text-dark);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

.section {
  padding: 90px 0;
  position: relative;
}

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

/* ========== 导航 ========== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(255, 248, 243, 0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 2px solid rgba(255, 107, 138, 0.12);
  box-shadow: 0 2px 20px rgba(255, 107, 138, 0.04);
}

.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: 800;
  font-size: 1.15rem;
  text-decoration: none;
  color: var(--text-dark);
  letter-spacing: -0.02em;
}

.logo-icon {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
  box-shadow: 2px 2px 0 rgba(255, 107, 138, 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: 500;
  color: var(--text-dark);
  padding: 6px 2px;
  position: relative;
  transition: color 0.25s;
}

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

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

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

.nav-cta {
  padding: 8px 22px;
  border-radius: 50px;
  color: #fff !important;
  font-weight: 600 !important;
  background: var(--primary);
  box-shadow: 3px 3px 0 rgba(255, 107, 138, 0.25);
  transition: all 0.25s ease;
}

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

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 5px 5px 0 rgba(255, 107, 138, 0.3);
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--text-dark);
  cursor: pointer;
  padding: 4px;
}

/* ========== Hero ========== */
.hero {
  min-height: 76vh;
  display: flex;
  align-items: center;
  position: relative;
  background: linear-gradient(145deg, #FFD6E0 0%, #FFF0F3 35%, #FFF8F3 70%);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  width: 180px;
  height: 180px;
  background: rgba(255, 107, 138, 0.06);
  border-radius: 60% 40% 55% 45%;
  top: 12%;
  right: 8%;
  animation: heroFloat 8s ease-in-out infinite;
}

.hero::after {
  content: '';
  position: absolute;
  width: 90px;
  height: 90px;
  background: rgba(168, 197, 160, 0.15);
  border-radius: 45% 55% 40% 60%;
  bottom: 15%;
  left: 6%;
  animation: heroFloat 6s ease-in-out infinite reverse;
}

@keyframes heroFloat {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-16px) rotate(4deg); }
}

.hero-content {
  max-width: 760px;
  position: relative;
  z-index: 2;
  padding: 40px 0;
}

.hero-eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  padding: 6px 18px;
  border-radius: 50px;
  margin-bottom: 20px;
  background: #fff;
  color: var(--primary);
  letter-spacing: 0.08em;
  box-shadow: 2px 2px 0 rgba(255, 107, 138, 0.15);
  border: 1px solid rgba(255, 107, 138, 0.2);
}

.hero h1 {
  font-size: 3.4rem;
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
  color: var(--text-dark);
  position: relative;
}

.hero h1::after {
  content: '';
  display: block;
  width: 72px;
  height: 8px;
  background: var(--accent);
  border-radius: 4px;
  margin-top: 12px;
}

.hero p {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 560px;
  margin-bottom: 36px;
  line-height: 1.7;
}

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

.hero-image {
  border-radius: 24px;
  overflow: hidden;
  box-shadow: 8px 8px 0 rgba(255, 107, 138, 0.12), 0 30px 60px rgba(255, 107, 138, 0.12);
  border: 3px solid #fff;
  transform: rotate(-1deg);
  transition: transform 0.4s ease;
  position: relative;
  z-index: 2;
}

.hero-image:hover {
  transform: rotate(0deg) scale(1.01);
}

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

/* ========== 按钮 ========== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 30px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn-primary {
  color: #fff;
  background: var(--primary);
  box-shadow: 4px 4px 0 rgba(255, 107, 138, 0.25);
}

.btn-primary:hover {
  transform: translateY(-2px) translateX(2px);
  box-shadow: 6px 6px 0 rgba(255, 107, 138, 0.3);
}

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

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.6);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(255, 107, 138, 0.12);
}

/* ========== 标题 / 标签 ========== */
.section-label {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 14px;
  color: var(--primary);
  background: rgba(255, 107, 138, 0.08);
  padding: 5px 16px;
  border-radius: 50px;
}

.section-title {
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
  color: var(--text-dark);
  position: relative;
}

.section-desc {
  max-width: 600px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 48px;
}

/* ========== 卡片网格 ========== */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 26px;
}

.category-card {
  border-radius: var(--radius);
  padding: 30px 28px;
  background: #fff;
  border: 2px solid var(--border-pink);
  box-shadow: 5px 5px 0 rgba(255, 107, 138, 0.06);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.category-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent), var(--secondary));
  opacity: 0;
  transition: opacity 0.3s;
}

.category-card:hover {
  transform: translateY(-6px) rotate(-0.6deg);
  box-shadow: 8px 8px 0 rgba(255, 107, 138, 0.12);
  border-color: var(--primary-light);
}

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

.card-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  font-size: 1.4rem;
  border-radius: 15px;
}

.category-card:nth-child(3n+1) .card-icon {
  background: #FFE0E7;
  box-shadow: 3px 3px 0 #FFB7C5;
}

.category-card:nth-child(3n+2) .card-icon {
  background: #E6F0E0;
  box-shadow: 3px 3px 0 #A8C5A0;
}

.category-card:nth-child(3n+3) .card-icon {
  background: #FFF3D6;
  box-shadow: 3px 3px 0 #F5C746;
}

.card-link {
  font-weight: 700;
  font-size: 0.88rem;
  text-decoration: none;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-top: 4px;
  transition: gap 0.2s;
}

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

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

.feature-image {
  border-radius: var(--radius);
  overflow: hidden;
  position: relative;
  box-shadow: 6px 6px 0 rgba(255, 107, 138, 0.12);
  border: 3px solid #fff;
  transform: rotate(1deg);
  transition: transform 0.35s;
}

.feature-image:hover {
  transform: rotate(0deg);
}

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

.feature-text {
  padding: 8px 0;
}

.feature-text .section-label {
  margin-bottom: 10px;
}

.feature-list {
  list-style: none;
  margin-top: 20px;
}

.feature-list li {
  padding: 10px 0;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.98rem;
  color: var(--text-dark);
  border-bottom: 1px dashed var(--border-pink);
}

.feature-list li::before {
  content: '🌸';
  font-size: 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: 32px 20px;
  border-radius: var(--radius);
  background: #fff;
  border: 2px solid var(--border-pink);
  box-shadow: 4px 4px 0 rgba(255, 107, 138, 0.05);
  transition: transform 0.25s, box-shadow 0.25s;
  position: relative;
}

.stat-item:hover {
  transform: translateY(-4px);
  box-shadow: 6px 6px 0 rgba(255, 107, 138, 0.1);
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 900;
  color: var(--primary);
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.stat-number::after {
  content: '';
  display: block;
  width: 32px;
  height: 3px;
  background: var(--accent);
  border-radius: 3px;
  margin: 10px auto 0;
}

.stat-label {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-top: 8px;
  font-weight: 500;
}

/* ========== 内容墙 ========== */
.content-wall {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 26px;
}

.content-wall-item {
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  border: 2px solid var(--border-pink);
  box-shadow: 4px 4px 0 rgba(255, 107, 138, 0.06);
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.content-wall-item:hover {
  transform: translateY(-6px);
  box-shadow: 8px 8px 0 rgba(255, 107, 138, 0.12);
  border-color: var(--primary-light);
}

.content-wall-item img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.content-wall-item:hover img {
  transform: scale(1.04);
}

.content-wall-body {
  padding: 22px 24px;
}

.content-wall-body h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.content-wall-body p {
  font-size: 0.88rem;
  color: var(--text-muted);
}

/* ========== FAQ ========== */
.faq-list {
  max-width: 820px;
  margin: 0 auto;
}

.faq-item {
  background: #fff;
  border: 2px solid var(--border-pink);
  border-radius: 14px;
  margin-bottom: 12px;
  overflow: hidden;
  cursor: pointer;
  transition: all 0.3s ease;
}

.faq-item:hover {
  border-color: var(--primary-light);
}

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

.faq-item .faq-question {
  padding: 18px 22px;
  font-weight: 600;
  font-size: 0.98rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-dark);
}

.faq-item .faq-question::after {
  content: '＋';
  font-size: 1.1rem;
  color: var(--primary);
  font-weight: 400;
  transition: transform 0.3s ease;
}

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

.faq-item .faq-answer {
  padding: 0 22px 20px;
  display: none;
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.7;
  border-top: 1px dashed var(--border-pink);
  margin-top: 0;
  padding-top: 16px;
}

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

/* ========== CTA 横幅 ========== */
.cta-banner {
  padding: 64px 40px;
  text-align: center;
  border-radius: 24px;
  background: linear-gradient(135deg, var(--primary) 0%, #FF8FA3 60%, #FFB7C5 100%);
  position: relative;
  overflow: hidden;
  box-shadow: 8px 8px 30px rgba(255, 107, 138, 0.25);
}

.cta-banner::before {
  content: '';
  position: absolute;
  width: 240px;
  height: 240px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  top: -80px;
  left: -60px;
}

.cta-banner::after {
  content: '';
  position: absolute;
  width: 160px;
  height: 160px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 40% 60% 55% 45%;
  bottom: -40px;
  right: 30px;
  animation: ctaFloat 6s ease-in-out infinite;
}

@keyframes ctaFloat {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-12px) rotate(5deg); }
}

.cta-banner h2 {
  color: #fff;
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
  position: relative;
  z-index: 2;
}

.cta-banner p {
  color: rgba(255, 255, 255, 0.9);
  max-width: 500px;
  margin: 0 auto 28px;
  position: relative;
  z-index: 2;
}

.cta-banner .btn-primary {
  background: #fff;
  color: var(--primary) !important;
  box-shadow: 4px 4px 0 rgba(255, 255, 255, 0.3);
}

.cta-banner .btn-primary:hover {
  transform: translateY(-2px) translateX(2px);
  box-shadow: 6px 6px 0 rgba(255, 255, 255, 0.3);
}

/* ========== 页脚 ========== */
.site-footer {
  padding: 64px 0 32px;
  background: var(--bg-pink);
  border-top: 2px solid var(--border-pink);
}

.site-footer .container {
  position: relative;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 44px;
}

.footer-brand {
  padding-right: 20px;
}

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

.footer-brand p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.7;
}

.footer-col h4 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text-dark);
  position: relative;
  padding-bottom: 8px;
}

.footer-col h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 24px;
  height: 3px;
  background: var(--primary);
  border-radius: 3px;
}

.footer-col ul {
  list-style: none;
}

.footer-col ul li {
  margin-bottom: 8px;
}

.footer-col ul a {
  text-decoration: none;
  font-size: 0.88rem;
  color: var(--text-muted);
  transition: color 0.2s, padding-left 0.2s;
}

.footer-col ul a:hover {
  color: var(--primary);
  padding-left: 6px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 107, 138, 0.15);
  margin-top: 48px;
  padding-top: 24px;
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer-bottom a {
  color: var(--primary);
  text-decoration: none;
}

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

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

.seo-description {
  max-width: 600px;
  margin: 0 auto 48px;
  color: var(--text-muted);
  line-height: 1.8;
}

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

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

/* ========== 响应式 ========== */
@media (max-width: 768px) {
  .feature-block {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .stats-bar {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

  .main-nav {
    display: none;
  }

  .menu-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .main-nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 68px;
    left: 0;
    width: 100%;
    background: var(--bg-cream);
    padding: 24px;
    gap: 16px;
    border-bottom: 2px solid var(--border-pink);
    box-shadow: 0 20px 40px rgba(255, 107, 138, 0.1);
  }

  .main-nav.open a {
    padding: 10px 0;
    font-size: 1rem;
    border-bottom: 1px solid var(--border-pink);
  }

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

  .hero h1 {
    font-size: 2.4rem;
  }

  .hero {
    min-height: 60vh;
  }

  .section {
    padding: 60px 0;
  }

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

  .cta-banner {
    padding: 44px 24px;
  }

  .cta-banner h2 {
    font-size: 1.6rem;
  }
}

@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;
  }

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

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

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

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