```css
/* ============================================
   漂亮的家教 × missq.com.cn
   设计系统：珊瑚薄荷 · 暖纸感
   概念：马卡龙教育美学
   ============================================ */

/* 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-color: #FFF8F0;
  background-image: radial-gradient(rgba(255,107,107,0.04) 1px, transparent 1px);
  background-size: 24px 24px;
  color: #3D3D3D;
  line-height: 1.6;
}

::selection {
  background: #FF6B6B;
  color: #fff;
}

/* 核心布局 — 必须居中 */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
}

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

.section:nth-child(even) {
  background: #F2FBF8;
}

/* 导航 — 固定顶部 */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(255,250,244,0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(78,205,196,0.25);
  box-shadow: 0 2px 20px rgba(0,0,0,0.02);
}

.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: #3D3D3D;
  letter-spacing: -0.5px;
}

.logo-icon {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  background: linear-gradient(135deg, #FF6B6B, #FF8A68);
  color: #fff;
  font-weight: 800;
  box-shadow: 0 4px 12px rgba(255,107,107,0.35);
}

.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;
  transition: color 0.2s;
  color: #4A4A4A;
  position: relative;
}

.main-nav a:not(.nav-cta)::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, #FF6B6B, #4ECDC4);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.main-nav a:not(.nav-cta):hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

.main-nav a:hover {
  color: #FF6B6B;
}

.nav-cta {
  padding: 8px 22px;
  border-radius: 50px;
  color: #fff !important;
  font-weight: 700;
  background: linear-gradient(135deg, #FF6B6B, #FF8A68);
  box-shadow: 0 4px 14px rgba(255,107,107,0.3);
  transition: transform 0.2s, box-shadow 0.2s;
}

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

.menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.6rem;
  cursor: pointer;
  color: #3D3D3D;
  width: 42px;
  height: 42px;
  border-radius: 10px;
  align-items: center;
  justify-content: center;
}

.menu-toggle:hover {
  background: rgba(255,107,107,0.08);
}

/* 首页Hero */
.hero {
  min-height: 70vh;
  display: flex;
  align-items: center;
  gap: 60px;
  padding: 120px 0 80px;
  position: relative;
}

.hero::before {
  content: '';
  position: absolute;
  right: -100px;
  top: 30%;
  width: 320px;
  height: 320px;
  background: radial-gradient(circle, rgba(78,205,196,0.12) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  left: -80px;
  bottom: 0;
  width: 240px;
  height: 240px;
  background: radial-gradient(circle, rgba(255,107,107,0.1) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero-content {
  max-width: 620px;
  flex: 1;
  position: relative;
  z-index: 2;
}

.hero-eyebrow {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 700;
  padding: 6px 18px;
  border-radius: 30px;
  margin-bottom: 18px;
  background: #FFE66D;
  color: #5A4A2A;
  transform: rotate(-2deg);
  box-shadow: 0 2px 8px rgba(255,230,109,0.5);
  position: relative;
}

.hero h1 {
  font-size: 3.2rem;
  line-height: 1.15;
  margin-bottom: 20px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: #2B2B2B;
}

.hero p {
  font-size: 1.1rem;
  opacity: 0.65;
  max-width: 560px;
  margin-bottom: 32px;
  line-height: 1.8;
}

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

.hero-image {
  flex: 1;
  border-radius: 28px;
  overflow: hidden;
  position: relative;
  z-index: 2;
  border: 6px solid #fff;
  box-shadow: 0 24px 48px rgba(78,205,196,0.18);
  background: linear-gradient(135deg, rgba(78,205,196,0.15), rgba(255,107,107,0.15));
  min-height: 380px;
  animation: heroFloat 6s ease-in-out infinite;
}

.hero-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

@keyframes heroFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 30px;
  border-radius: 50px;
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: transform 0.2s, box-shadow 0.2s, background 0.2s;
}

.btn:focus-visible,
.main-nav a:focus-visible {
  outline: 3px solid rgba(255,107,107,0.4);
  outline-offset: 2px;
}

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, #FF6B6B, #FF8A68);
  box-shadow: 0 4px 16px rgba(255,107,107,0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(255,107,107,0.45);
}

.btn-outline {
  background: transparent;
  border: 2px solid #FF6B6B;
  color: #FF6B6B;
}

.btn-outline:hover {
  background: rgba(255,107,107,0.06);
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(255,107,107,0.15);
}

/* 标签/标题 */
.section-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 4px;
  margin-bottom: 14px;
  text-transform: uppercase;
  color: #2BA89F;
  background: linear-gradient(90deg, rgba(78,205,196,0.18), rgba(78,205,196,0.05));
  border-left: 3px solid #4ECDC4;
  padding: 8px 20px;
  border-radius: 0 30px 30px 0;
  position: relative;
  left: -24px;
}

.section-title {
  font-size: 2.4rem;
  margin-bottom: 16px;
  font-weight: 800;
  color: #2B2B2B;
  letter-spacing: -0.01em;
  line-height: 1.2;
}

.section-title::before {
  content: '';
  display: inline-block;
  width: 10px;
  height: 10px;
  background: #FF6B6B;
  transform: rotate(45deg);
  margin-right: 12px;
  border-radius: 2px;
  vertical-align: middle;
}

.section-desc {
  max-width: 600px;
  opacity: 0.65;
  margin-bottom: 40px;
  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: 20px;
  padding: 32px 28px;
  border: 1px solid rgba(0,0,0,0.04);
  background: #fff;
  box-shadow: 0 2px 16px rgba(61,61,61,0.05);
  transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
  position: relative;
  overflow: hidden;
}

.category-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, #FF6B6B, #4ECDC4, #FFE66D);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}

.category-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 32px rgba(255,107,107,0.12);
  border-color: rgba(255,107,107,0.2);
}

.category-card:hover::before {
  transform: scaleX(1);
}

.category-card h3 {
  font-size: 1.15rem;
  margin-bottom: 8px;
  font-weight: 700;
}

.category-card p {
  font-size: 0.9rem;
  opacity: 0.65;
  line-height: 1.6;
  margin-bottom: 14px;
}

.card-icon {
  width: 52px;
  height: 52px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  font-size: 1.4rem;
  background: rgba(78,205,196,0.12);
  color: #2BA89F;
  transition: transform 0.3s, background 0.3s;
}

.category-card:hover .card-icon {
  transform: scale(1.1) rotate(-6deg);
  background: rgba(255,107,107,0.12);
  color: #FF6B6B;
}

.card-link {
  font-weight: 700;
  font-size: 0.85rem;
  text-decoration: none;
  color: #FF6B6B;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap 0.2s;
}

.card-link:hover {
  gap: 12px;
}

/* 特性块 */
.feature-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}

.feature-image {
  border-radius: 24px;
  overflow: hidden;
  border: 4px solid #fff;
  box-shadow: 0 20px 40px rgba(61,61,61,0.08);
  min-height: 320px;
  background: linear-gradient(135deg, rgba(255,230,109,0.2), rgba(78,205,196,0.15));
}

.feature-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.feature-text {
  font-size: 1rem;
}

.feature-text p {
  opacity: 0.65;
  line-height: 1.7;
  margin-bottom: 20px;
}

.feature-list {
  list-style: none;
  margin-top: 12px;
}

.feature-list li {
  padding: 8px 0;
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 500;
}

.feature-list li::before {
  content: '✓';
  font-weight: 700;
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: rgba(78,205,196,0.15);
  color: #2BA89F;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
}

/* 数据条 */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  text-align: center;
}

.stat-item {
  padding: 32px 24px;
  border-radius: 20px;
  border: none;
  background: #fff;
  box-shadow: 0 4px 20px rgba(61,61,61,0.06);
  transition: transform 0.3s, box-shadow 0.3s;
}

.stat-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 30px rgba(78,205,196,0.18);
}

.stat-number {
  font-size: 2.4rem;
  font-weight: 800;
  background: linear-gradient(135deg, #FF6B6B, #FF8A68);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
}

.stat-label {
  font-size: 0.9rem;
  opacity: 0.6;
  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: 20px;
  overflow: hidden;
  border: 1px solid rgba(0,0,0,0.04);
  background: #fff;
  transition: transform 0.3s, box-shadow 0.3s;
  box-shadow: 0 2px 12px rgba(61,61,61,0.04);
}

.content-wall-item:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 36px rgba(78,205,196,0.2);
}

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

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

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

.content-wall-body p {
  font-size: 0.9rem;
  opacity: 0.6;
  line-height: 1.6;
}

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

.faq-item {
  border: 1px solid rgba(0,0,0,0.04);
  border-radius: 16px;
  margin-bottom: 12px;
  overflow: hidden;
  cursor: pointer;
  background: #fff;
  box-shadow: 0 2px 10px rgba(61,61,61,0.03);
  transition: border-color 0.3s, box-shadow 0.3s;
}

.faq-item:hover {
  border-color: rgba(78,205,196,0.3);
}

.faq-item.open {
  border-color: rgba(78,205,196,0.5);
  box-shadow: 0 4px 16px rgba(78,205,196,0.12);
}

.faq-item .faq-question {
  padding: 18px 22px;
  font-weight: 700;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  font-size: 1rem;
}

.faq-item .faq-question::after {
  content: '+';
  font-size: 1.4rem;
  font-weight: 400;
  line-height: 1;
  transition: transform 0.3s;
  color: #FF6B6B;
}

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

.faq-item .faq-answer {
  padding: 0 22px 18px;
  display: none;
  opacity: 0.65;
  line-height: 1.7;
}

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

/* CTA横幅 */
.cta-banner {
  padding: 64px 48px;
  text-align: center;
  border-radius: 28px;
  color: #fff;
  background: linear-gradient(135deg, #FF6B6B 0%, #FF8A68 50%, #4ECDC4 100%);
  position: relative;
  overflow: hidden;
}

.cta-banner::before,
.cta-banner::after {
  content: '';
  position: absolute;
  border-radius: 50%;
  background: rgba(255,255,255,0.1);
  pointer-events: none;
}

.cta-banner::before {
  width: 220px;
  height: 220px;
  top: -60px;
  right: -40px;
}

.cta-banner::after {
  width: 140px;
  height: 140px;
  bottom: -40px;
  left: -20px;
}

.cta-banner h2 {
  color: #fff;
  font-size: 2.2rem;
  margin-bottom: 14px;
  position: relative;
  z-index: 2;
}

.cta-banner p {
  color: rgba(255,255,255,0.9);
  max-width: 560px;
  margin: 0 auto 28px;
  position: relative;
  z-index: 2;
  line-height: 1.7;
}

.cta-banner .btn-primary {
  background: #fff;
  color: #FF6B6B;
  box-shadow: 0 8px 24px rgba(0,0,0,0.12);
  position: relative;
  z-index: 2;
}

.cta-banner .btn-primary:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 12px 30px rgba(0,0,0,0.18);
}

/* 页脚 */
.site-footer {
  padding: 56px 0 28px;
  background: #EDE0D6;
  border-top: 1px solid rgba(0,0,0,0.05);
  color: #3D3D3D;
}

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

.footer-brand p {
  opacity: 0.6;
  line-height: 1.7;
  margin-top: 14px;
  max-width: 320px;
}

.footer-col h4 {
  font-size: 1rem;
  margin-bottom: 16px;
  font-weight: 700;
  color: #2B2B2B;
}

.footer-col a,
.footer-col p {
  display: block;
  color: #6B5B4F;
  text-decoration: none;
  font-size: 0.9rem;
  line-height: 2;
  opacity: 0.8;
  transition: opacity 0.2s, color 0.2s;
}

.footer-col a:hover {
  color: #FF6B6B;
  opacity: 1;
}

.footer-bottom {
  border-top: 1px solid rgba(0,0,0,0.08);
  margin-top: 40px;
  padding-top: 20px;
  text-align: center;
  font-size: 0.85rem;
  opacity: 0.6;
}

/* 工具类 */
.text-accent {
  color: #FF6B6B;
}

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

.seo-description {
  max-width: 600px;
  margin: 0 auto 48px;
  opacity: 0.65;
  line-height: 1.8;
}

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

/* 响应式 */
@media (max-width: 768px) {
  .hero {
    flex-direction: column;
    padding: 100px 0 40px;
    gap: 40px;
  }

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

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

  .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: #FFF8F0;
    padding: 24px;
    box-shadow: 0 16px 32px rgba(0,0,0,0.08);
    border-radius: 0 0 20px 20px;
    gap: 4px;
  }

  .main-nav.open a {
    padding: 12px 16px;
    border-radius: 12px;
  }

  .main-nav.open a:hover {
    background: rgba(255,107,107,0.08);
  }

  .main-nav.open .nav-cta {
    margin-top: 8px;
    text-align: center;
  }

  .section-title {
    font-size: 2rem;
  }

  .cta-banner {
    padding: 40px 24px;
  }

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

  .section {
    padding: 60px 0;
  }

  .section-label {
    left: 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;
  }

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

  .hero h1 {
    font-size: 1.8rem;
  }

  .section-title {
    font-size: 1.7rem;
  }
}