:root {
  --bg: #FDF8F4;
  --bg-alt: #F3EAE1;
  --bg-card: #FFFFFF;
  --coral: #FF6B4A;
  --coral-dark: #E8543A;
  --teal: #2EC4B6;
  --teal-dark: #1FA396;
  --yellow: #FFD166;
  --yellow-light: #FFE8A3;
  --ink: #2D2A26;
  --ink-soft: #6B6258;
  --line: #EEE5DC;
  --shadow: 0 8px 40px rgba(255, 107, 74, 0.12);
  --shadow-lg: 0 16px 48px rgba(45, 42, 38, 0.10);
  --radius: 20px;
  --radius-lg: 32px;
  --radius-pill: 999px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: system-ui, 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
  overflow-x: hidden;
  background-color: var(--bg);
  background-image: radial-gradient(circle, rgba(255, 107, 74, 0.045) 1.5px, transparent 1.5px);
  background-size: 40px 40px;
  color: var(--ink);
  line-height: 1.6;
}

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

.section {
  padding: 96px 0;
  position: relative;
}

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

/* 段落顶部波浪装饰 */
.section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%) rotate(-3deg);
  width: 120px;
  height: 18px;
  border-radius: 50%;
  background: rgba(46, 196, 182, 0.18);
  filter: blur(2px);
}

/* 导航 */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(253, 248, 244, 0.92);
  backdrop-filter: blur(20px) saturate(160%);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
  border-bottom: 1px solid rgba(255, 107, 74, 0.12);
  box-shadow: 0 4px 24px rgba(45, 42, 38, 0.04);
}

.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: 12px;
  font-weight: 800;
  font-size: 1.3rem;
  text-decoration: none;
  color: var(--ink);
  letter-spacing: -0.5px;
  position: relative;
  z-index: 2;
}

.logo-icon {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  background: linear-gradient(135deg, var(--coral), var(--yellow));
  color: #fff;
  box-shadow: 0 4px 14px rgba(255, 107, 74, 0.35);
}

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

.main-nav a {
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--ink-soft);
  transition: color 0.25s ease;
  position: relative;
}

.main-nav a:not(.nav-cta)::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 0;
  height: 2.5px;
  border-radius: 2px;
  background: var(--coral);
  transition: width 0.3s cubic-bezier(0.22, 1, 0.36, 1);
}

.main-nav a:not(.nav-cta):hover {
  color: var(--coral);
}

.main-nav a:not(.nav-cta):hover::after {
  width: 100%;
}

.nav-cta {
  padding: 10px 24px;
  border-radius: var(--radius-pill);
  color: #fff !important;
  font-weight: 600;
  background: linear-gradient(135deg, var(--coral), var(--coral-dark));
  box-shadow: 0 4px 16px rgba(255, 107, 74, 0.35);
  transition: all 0.3s ease;
}

.nav-cta:hover {
  transform: translateY(-2px) scale(1.03);
  box-shadow: 0 8px 24px rgba(255, 107, 74, 0.45);
}

/* Hero */
.hero {
  min-height: 70vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: 96px;
}

/* hero 装饰性圆形 */
.hero::before {
  content: '';
  position: absolute;
  right: -80px;
  top: 40%;
  width: 480px;
  height: 480px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 209, 102, 0.4) 0%, rgba(255, 107, 74, 0.12) 55%, transparent 70%);
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  left: -120px;
  bottom: -60px;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(46, 196, 182, 0.28) 0%, transparent 70%);
  pointer-events: none;
}

.hero-content {
  max-width: 720px;
  position: relative;
  z-index: 2;
}

.hero-eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  padding: 6px 20px;
  border-radius: var(--radius-pill);
  margin-bottom: 20px;
  background: rgba(255, 209, 102, 0.25);
  color: #B58A1F;
  border: 1px solid rgba(255, 209, 102, 0.4);
  backdrop-filter: blur(4px);
}

.hero h1 {
  font-size: 3.4rem;
  line-height: 1.15;
  margin-bottom: 20px;
  font-weight: 800;
  letter-spacing: -1.5px;
  color: var(--ink);
}

.hero h1::after {
  content: '✦';
  display: inline-block;
  margin-left: 12px;
  font-size: 1.6rem;
  color: var(--coral);
  animation: rotate-soft 8s linear infinite;
}

@keyframes rotate-soft {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.hero p {
  font-size: 1.1rem;
  opacity: 0.7;
  max-width: 560px;
  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;
  position: relative;
  z-index: 2;
  box-shadow: var(--shadow-lg);
}

.hero-image img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 0.6s ease;
}

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

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: all 0.3s cubic-bezier(0.22, 1, 0.36, 1);
  letter-spacing: 0.3px;
}

.btn-primary {
  background: linear-gradient(135deg, var(--coral), var(--coral-dark));
  color: #fff;
  box-shadow: 0 6px 20px rgba(255, 107, 74, 0.4);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 32px rgba(255, 107, 74, 0.5);
}

.btn-outline {
  background: rgba(255, 255, 255, 0.8);
  border: 2px solid var(--teal);
  color: var(--teal-dark);
  backdrop-filter: blur(6px);
}

.btn-outline:hover {
  background: var(--teal);
  color: #fff;
  transform: translateY(-3px);
}

/* 标签/标题 */
.section-label {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: 14px;
  color: var(--coral);
  padding: 4px 16px;
  background: rgba(255, 107, 74, 0.08);
  border-radius: var(--radius-pill);
}

.section-title {
  font-size: 2.4rem;
  margin-bottom: 16px;
  font-weight: 800;
  letter-spacing: -1px;
  line-height: 1.2;
}

.section-desc {
  max-width: 600px;
  opacity: 0.65;
  margin-bottom: 48px;
  font-size: 1.05rem;
}

/* 卡片网格 */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 28px;
}

.category-card {
  border-radius: var(--radius-lg);
  padding: 32px;
  background: var(--bg-card);
  border: 1px solid var(--line);
  transition: all 0.4s cubic-bezier(0.22, 1, 0.36, 1);
  position: relative;
  overflow: hidden;
}

/* 卡角装饰圆 */
.category-card::after {
  content: '';
  position: absolute;
  right: -30px;
  top: -30px;
  width: 90px;
  height: 90px;
  border-radius: 50%;
  background: rgba(46, 196, 182, 0.1);
  transition: transform 0.4s ease;
}

.category-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 40px rgba(45, 42, 38, 0.12);
  border-color: rgba(255, 107, 74, 0.2);
}

.category-card:hover::after {
  transform: scale(1.8);
  background: rgba(255, 107, 74, 0.08);
}

.card-icon {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 1.5rem;
  background: linear-gradient(135deg, rgba(255, 107, 74, 0.2), rgba(255, 209, 102, 0.2));
  position: relative;
  z-index: 1;
}

.card-link {
  font-weight: 700;
  font-size: 0.9rem;
  text-decoration: none;
  color: var(--coral);
  transition: color 0.3s;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 12px;
  position: relative;
  z-index: 1;
}

.card-link:hover {
  color: var(--coral-dark);
}

.card-link::after {
  content: '→';
  transition: transform 0.3s ease;
}

.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-lg);
  position: relative;
}

.feature-image img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 0.6s ease;
}

.feature-image:hover img {
  transform: scale(1.04);
}

.feature-text {
  padding: 20px 0;
}

.feature-text .section-title {
  margin-bottom: 20px;
}

.feature-list {
  list-style: none;
  margin-top: 24px;
}

.feature-list li {
  padding: 10px 0;
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 1.02rem;
  border-bottom: 1px dashed rgba(255, 107, 74, 0.15);
}

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

.feature-list li::before {
  content: '✓';
  font-weight: 800;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: rgba(46, 196, 182, 0.15);
  color: var(--teal-dark);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  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 24px;
  border-radius: var(--radius-lg);
  background: var(--bg-card);
  border: 1px solid var(--line);
  position: relative;
  overflow: hidden;
  transition: all 0.3s ease;
}

.stat-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--coral), var(--teal), var(--yellow));
  opacity: 0;
  transition: opacity 0.3s;
}

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

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

.stat-number {
  font-size: 2.6rem;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -1px;
  background: linear-gradient(135deg, var(--coral), var(--coral-dark));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  font-size: 0.9rem;
  opacity: 0.55;
  margin-top: 10px;
  font-weight: 500;
}

/* 内容墙 */
.content-wall {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 28px;
}

.content-wall-item {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--bg-card);
  border: 1px solid var(--line);
  transition: all 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}

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

.content-wall-item img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.content-wall-item:hover img {
  transform: scale(1.06);
}

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

.content-wall-body h3 {
  font-size: 1.1rem;
  margin-bottom: 6px;
  font-weight: 700;
}

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

.faq-item {
  border: 1px solid var(--line);
  border-radius: 16px;
  margin-bottom: 12px;
  overflow: hidden;
  cursor: pointer;
  background: var(--bg-card);
  transition: border-color 0.3s, box-shadow 0.3s;
}

.faq-item:hover {
  border-color: rgba(255, 107, 74, 0.3);
  box-shadow: 0 4px 16px rgba(255, 107, 74, 0.08);
}

.faq-item .faq-question {
  padding: 20px 24px;
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 1.02rem;
}

.faq-item .faq-question::after {
  content: '+';
  font-size: 1.5rem;
  font-weight: 400;
  color: var(--coral);
  transition: transform 0.3s ease;
}

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

.faq-item .faq-answer {
  padding: 0 24px 20px;
  display: none;
  opacity: 0.7;
  line-height: 1.7;
}

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

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

/* CTA横幅 */
.cta-banner {
  padding: 64px 48px;
  text-align: center;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--coral) 0%, #FF8A65 50%, var(--yellow) 100%);
  color: #fff;
  position: relative;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(255, 107, 74, 0.35);
}

/* 装饰圆 */
.cta-banner::before {
  content: '';
  position: absolute;
  top: -80px;
  left: -80px;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.15);
}

.cta-banner::after {
  content: '';
  position: absolute;
  right: -40px;
  bottom: -80px;
  width: 160px;
  height: 160px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.12);
}

.cta-banner h2 {
  color: #fff;
  font-size: 2.2rem;
  margin-bottom: 12px;
  font-weight: 800;
  position: relative;
  z-index: 1;
}

.cta-banner p {
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 28px;
  position: relative;
  z-index: 1;
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}

.cta-banner .btn-primary {
  background: #fff;
  color: var(--coral);
  box-shadow: 0 6px 24px rgba(255, 107, 74, 0.3);
  position: relative;
  z-index: 1;
}

.cta-banner .btn-primary:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.15);
}

/* 页脚 */
.site-footer {
  padding: 64px 0 28px;
  background: #F3ECE3;
  border-top: 1px solid rgba(255, 107, 74, 0.1);
}

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

.footer-brand p {
  opacity: 0.6;
  font-size: 0.95rem;
  margin-top: 16px;
  max-width: 240px;
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 12px;
  position: relative;
  padding-bottom: 8px;
}

.footer-col h4::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 24px;
  height: 3px;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--coral), var(--yellow));
}

.footer-col a {
  text-decoration: none;
  color: var(--ink-soft);
  font-size: 0.9rem;
  opacity: 0.7;
  transition: all 0.25s;
}

.footer-col a:hover {
  opacity: 1;
  color: var(--coral);
  transform: translateX(4px);
}

.footer-bottom {
  border-top: 1px solid rgba(45, 42, 38, 0.1);
  margin-top: 48px;
  padding-top: 24px;
  text-align: center;
  font-size: 0.85rem;
  opacity: 0.6;
}

/* 工具类 */
.text-accent {
  color: var(--coral);
  font-weight: 700;
}

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

.seo-description {
  max-width: 600px;
  margin: 0 auto 48px;
  opacity: 0.6;
}

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

/* 汉堡菜单 */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: 2px solid var(--line);
  border-radius: 12px;
  cursor: pointer;
  padding: 10px;
  width: 44px;
  height: 44px;
  justify-content: center;
  align-items: center;
  background: rgba(255, 255, 255, 0.8);
}

.menu-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--ink);
  border-radius: 4px;
  transition: all 0.3s ease;
}

.menu-toggle:hover span {
  background: var(--coral);
}

/* 响应式 */
@media (max-width: 1024px) {
  .hero h1 {
    font-size: 2.6rem;
  }
  
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 72px 0;
  }
  
  .hero {
    min-height: 60vh;
    padding-top: 100px;
  }
  
  .hero h1 {
    font-size: 2.2rem;
  }
  
  .hero-buttons {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .hero-buttons .btn {
    width: 100%;
    justify-content: center;
  }
  
  .feature-block {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  
  .stats-bar {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  
  .main-nav {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 72px;
    left: 0;
    width: 100%;
    background: rgba(253, 248, 244, 0.98);
    backdrop-filter: blur(20px);
    padding: 24px;
    gap: 16px;
    border-bottom: 2px solid rgba(255, 107, 74, 0.15);
    box-shadow: 0 20px 40px rgba(45, 42, 38, 0.1);
  }
  
  .menu-toggle {
    display: flex;
  }
  
  .main-nav.open {
    display: flex;
    animation: slideDown 0.35s cubic-bezier(0.22, 1, 0.36, 1);
  }
  
  .main-nav.open a {
    padding: 12px 16px;
    font-size: 1.1rem;
    border-radius: 12px;
    text-align: center;
  }
  
  .main-nav.open a:hover {
    background: rgba(255, 107, 74, 0.08);
  }
  
  .nav-cta {
    display: block;
    text-align: center;
  }
  
  @keyframes slideDown {
    from {
      opacity: 0;
      transform: translateY(-12px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 1.9rem;
  }
  
  .hero::before {
    width: 300px;
    height: 300px;
    right: -100px;
  }
  
  .section-title {
    font-size: 1.8rem;
  }
  
  .btn {
    padding: 12px 24px;
    font-size: 0.9rem;
  }
  
  .cards-grid,
  .content-wall,
  .stats-bar {
    grid-template-columns: 1fr;
  }
  
  .stat-number {
    font-size: 2rem;
  }
  
  .cta-banner {
    padding: 48px 24px;
  }
  
  .cta-banner h2 {
    font-size: 1.7rem;
  }
}

/* 细节微交互动画 */
.category-card .card-icon,
.stat-item,
.btn,
.faq-item,
.content-wall-item img {
  -webkit-tap-highlight-color: transparent;
}

::selection {
  background: var(--coral);
  color: #fff;
}

::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-track {
  background: var(--bg);
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--coral), var(--teal));
  border-radius: 8px;
}

::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(180deg, var(--coral-dark), var(--teal-dark));
}