/*
* 彩虹之上，爱无界限
* 设计理念：以彩虹光谱为核心视觉元素，结合柔和渐变与流动形态
* 色彩系统：粉紫渐变 + 柔光白底 + 彩虹点缀色
* 字体风格：圆润现代，大字号对比
*/

*, *::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: linear-gradient(135deg, #fff5f7 0%, #f0f4ff 50%, #f5f0ff 100%);
  color: #2d2b3a;
  line-height: 1.6;
}

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

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

.section:nth-child(even) { 
  background: rgba(255,255,255,0.6);
  backdrop-filter: blur(20px);
}

/* 导航 — 彩虹固定顶部 */
.site-header { 
  position: fixed; 
  top: 0; 
  left: 0; 
  width: 100%; 
  z-index: 1000; 
  background: rgba(255,255,255,0.92); 
  backdrop-filter: blur(16px); 
  border-bottom: none;
  box-shadow: 0 1px 20px rgba(200, 160, 220, 0.15);
}

.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: #2d2b3a;
  letter-spacing: -0.5px;
}

.logo-icon { 
  width: 40px; 
  height: 40px; 
  border-radius: 50%; 
  display: flex; 
  align-items: center; 
  justify-content: center; 
  font-size: 1.2rem;
  background: linear-gradient(135deg, #ff6b9d, #c44dff, #6b9dff);
  color: #fff;
  box-shadow: 0 4px 12px rgba(196, 77, 255, 0.3);
}

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

.main-nav a { 
  text-decoration: none; 
  font-size: 0.95rem; 
  font-weight: 500; 
  transition: all 0.3s ease;
  color: #4a4560;
  position: relative;
  padding: 4px 0;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, #ff6b9d, #c44dff);
  transition: width 0.3s ease;
}

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

.main-nav a:hover { color: #c44dff; }

.nav-cta { 
  padding: 10px 24px; 
  border-radius: 50px; 
  color: #fff !important; 
  font-weight: 700; 
  background: linear-gradient(135deg, #ff6b9d, #c44dff);
  box-shadow: 0 4px 16px rgba(196, 77, 255, 0.3);
  transition: all 0.3s ease !important;
}

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

.nav-cta:hover { 
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(196, 77, 255, 0.45);
}

.menu-toggle { display: none; }

/* 首页Hero — 流动渐变 */
.hero { 
  min-height: 80vh; 
  display: flex; 
  align-items: center; 
  position: relative;
  background: linear-gradient(135deg, #fff5f7 0%, #f5f0ff 50%, #f0f4ff 100%);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -30%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(255,107,157,0.12), transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -20%;
  left: -15%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(196,77,255,0.1), transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero-content { 
  max-width: 700px; 
  position: relative;
  z-index: 2;
}

.hero-eyebrow { 
  display: inline-block; 
  font-size: 0.8rem; 
  font-weight: 700; 
  padding: 6px 18px; 
  border-radius: 50px; 
  margin-bottom: 20px;
  background: linear-gradient(135deg, rgba(255,107,157,0.15), rgba(196,77,255,0.15));
  color: #c44dff;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.hero h1 { 
  font-size: 3.2rem; 
  line-height: 1.15; 
  margin-bottom: 20px;
  background: linear-gradient(135deg, #2d2b3a 30%, #c44dff, #ff6b9d);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 800;
  letter-spacing: -1px;
}

.hero p { 
  font-size: 1.15rem; 
  opacity: 0.6; 
  max-width: 540px; 
  margin-bottom: 36px;
  color: #5a5770;
}

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

.hero-image { 
  border-radius: 24px; 
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(196, 77, 255, 0.15);
}

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

/* 按钮 — 圆润渐变 */
.btn { 
  display: inline-flex; 
  align-items: center; 
  gap: 8px; 
  padding: 14px 32px; 
  border-radius: 50px; 
  font-weight: 700; 
  cursor: pointer; 
  border: none; 
  text-decoration: none; 
  transition: all 0.3s ease;
  font-size: 0.95rem;
}

.btn-primary { 
  color: #fff; 
  background: linear-gradient(135deg, #ff6b9d, #c44dff);
  box-shadow: 0 4px 16px rgba(196, 77, 255, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(196, 77, 255, 0.4);
}

.btn-outline { 
  background: transparent; 
  border: 2px solid;
  border-image: linear-gradient(135deg, #ff6b9d, #c44dff) 1;
  color: #c44dff;
  -webkit-text-fill-color: #c44dff;
}

.btn-outline:hover {
  background: linear-gradient(135deg, rgba(255,107,157,0.08), rgba(196,77,255,0.08));
  transform: translateY(-2px);
}

/* 标签/标题 */
.section-label { 
  display: inline-block; 
  font-size: 0.75rem; 
  font-weight: 700; 
  letter-spacing: 3px; 
  margin-bottom: 12px;
  color: #c44dff;
  text-transform: uppercase;
}

.section-title { 
  font-size: 2.4rem; 
  margin-bottom: 16px;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: #2d2b3a;
}

.section-desc { 
  max-width: 600px; 
  opacity: 0.6; 
  margin-bottom: 48px;
  color: #5a5770;
  font-size: 1.05rem;
}

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

.category-card { 
  border-radius: 20px; 
  padding: 32px; 
  border: 1px solid rgba(255,255,255,0.6);
  background: rgba(255,255,255,0.7);
  backdrop-filter: blur(12px);
  transition: all 0.4s ease;
  box-shadow: 0 4px 20px rgba(200, 160, 220, 0.08);
}

.category-card:hover { 
  transform: translateY(-6px); 
  box-shadow: 0 12px 40px rgba(196, 77, 255, 0.15);
  border-color: rgba(196, 77, 255, 0.3);
  background: rgba(255,255,255,0.9);
}

.card-icon { 
  width: 52px; 
  height: 52px; 
  border-radius: 16px; 
  display: flex; 
  align-items: center; 
  justify-content: center; 
  margin-bottom: 20px; 
  font-size: 1.4rem;
  background: linear-gradient(135deg, rgba(255,107,157,0.12), rgba(196,77,255,0.12));
}

.card-link { 
  font-weight: 700; 
  font-size: 0.85rem; 
  text-decoration: none;
  color: #c44dff;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap 0.3s ease;
}

.card-link:hover { gap: 10px; }

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

.feature-image { 
  border-radius: 20px; 
  overflow: hidden;
  box-shadow: 0 12px 40px rgba(196, 77, 255, 0.12);
}

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

.feature-text { }

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

.feature-list li { 
  padding: 10px 0; 
  display: flex; 
  align-items: center; 
  gap: 12px;
  font-size: 1rem;
  color: #4a4560;
}

.feature-list li::before { 
  content: '✦'; 
  font-weight: 700;
  color: #c44dff;
  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: 20px; 
  border: 1px solid rgba(255,255,255,0.5);
  background: rgba(255,255,255,0.6);
  backdrop-filter: blur(8px);
  transition: all 0.3s ease;
}

.stat-item:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(196, 77, 255, 0.1);
  border-color: rgba(196, 77, 255, 0.2);
}

.stat-number { 
  font-size: 2.6rem; 
  font-weight: 800;
  background: linear-gradient(135deg, #ff6b9d, #c44dff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label { 
  font-size: 0.9rem; 
  opacity: 0.6; 
  margin-top: 8px;
  color: #5a5770;
}

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

.content-wall-item { 
  border-radius: 20px; 
  overflow: hidden; 
  border: 1px solid rgba(255,255,255,0.5);
  background: rgba(255,255,255,0.7);
  backdrop-filter: blur(8px);
  transition: all 0.4s ease;
}

.content-wall-item:hover { 
  transform: translateY(-6px); 
  box-shadow: 0 12px 40px rgba(196, 77, 255, 0.15);
  border-color: rgba(196, 77, 255, 0.3);
}

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

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

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

.content-wall-body h3 { 
  font-size: 1.15rem;
  margin-bottom: 8px;
  color: #2d2b3a;
}

.content-wall-body p {
  font-size: 0.9rem;
  opacity: 0.6;
  color: #5a5770;
}

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

.faq-item { 
  border: 1px solid rgba(255,255,255,0.5);
  background: rgba(255,255,255,0.6);
  backdrop-filter: blur(8px);
  border-radius: 16px; 
  margin-bottom: 12px; 
  overflow: hidden; 
  cursor: pointer; 
  transition: all 0.3s ease;
}

.faq-item:hover {
  border-color: rgba(196, 77, 255, 0.3);
  box-shadow: 0 4px 20px rgba(196, 77, 255, 0.08);
}

.faq-item .faq-question { 
  padding: 20px 24px; 
  font-weight: 700; 
  display: flex; 
  justify-content: space-between;
  align-items: center;
  color: #2d2b3a;
  font-size: 1.05rem;
}

.faq-item .faq-question::after {
  content: '+';
  font-size: 1.4rem;
  color: #c44dff;
  transition: transform 0.3s ease;
}

.faq-item.open .faq-question::after {
  content: '−';
  transform: rotate(180deg);
}

.faq-item .faq-answer { 
  padding: 0 24px 20px; 
  display: none; 
  opacity: 0.7;
  color: #5a5770;
  line-height: 1.7;
}

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

/* CTA横幅 — 彩虹渐变 */
.cta-banner { 
  padding: 64px 32px; 
  text-align: center; 
  border-radius: 24px; 
  background: linear-gradient(135deg, #ff6b9d, #c44dff, #6b9dff);
  box-shadow: 0 16px 56px rgba(196, 77, 255, 0.25);
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255,255,255,0.1), transparent 60%);
  pointer-events: none;
}

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

.cta-banner p {
  color: rgba(255,255,255,0.8);
  font-size: 1.05rem;
  margin-bottom: 28px;
}

.cta-banner .btn-primary { 
  background: #fff;
  color: #c44dff;
  box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

.cta-banner .btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0,0,0,0.15);
}

/* 页脚 */
.site-footer { 
  padding: 64px 0 32px; 
  background: linear-gradient(135deg, #2d2b3a, #1a1a2e);
  color: rgba(255,255,255,0.8);
}

.site-footer .container { }

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

.footer-brand { }

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

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

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

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

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

.footer-col ul li a {
  color: rgba(255,255,255,0.6);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.3s ease;
}

.footer-col ul li a:hover {
  color: #c44dff;
}

.footer-bottom { 
  border-top: 1px solid rgba(255,255,255,0.08); 
  margin-top: 48px; 
  padding-top: 24px; 
  text-align: center; 
  font-size: 0.85rem;
  opacity: 0.5;
}

/* 工具类 */
.text-accent { 
  color: #c44dff;
}

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

.seo-description { 
  max-width: 600px; 
  margin: 0 auto 48px; 
  opacity: 0.6;
  color: #5a5770;
}

.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); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .main-nav { display: none; }
  .menu-toggle { 
    display: flex; 
    width: 40px;
    height: 40px;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    background: rgba(196,77,255,0.08);
    border-radius: 12px;
    border: none;
    font-size: 1.2rem;
    color: #c44dff;
  }
  .main-nav.open { 
    display: flex; 
    flex-direction: column; 
    position: absolute; 
    top: 68px; 
    left: 0; 
    width: 100%; 
    background: rgba(255,255,255,0.98);
    backdrop-filter: blur(20px);
    padding: 24px;
    gap: 16px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.08);
  }
  .hero h1 { font-size: 2.4rem; }
  .section-title { font-size: 1.8rem; }
  .cta-banner h2 { font-size: 1.6rem; }
  .cta-banner { padding: 48px 24px; }
}

@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 h1 { font-size: 1.8rem; }
  .section-title { font-size: 1.5rem; }
  .stat-number { font-size: 2rem; }
  .hero { min-height: 60vh; }
}