/* 一同看 · 看见未来 · 视觉设计系统 */
/* 风格：通透玻璃态 + 柔和渐变 + 非传统粉蓝紫组合 */
/* 背景：浅色渐变，拒绝黑色/深色 */

*, *::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(145deg, #f9f3f0 0%, #e8f0fe 50%, #f0e6f9 100%);
  color: #1e1e2a;
  min-height: 100vh;
}

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

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

.section:nth-child(even) {
  background: rgba(255, 255, 255, 0.55);
  backdrop-filter: blur(6px);
  border-top: 1px solid rgba(255,255,255,0.6);
  border-bottom: 1px solid rgba(255,255,255,0.6);
}

/* 导航 — 玻璃态固定顶栏 */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(255, 245, 240, 0.72);
  backdrop-filter: blur(16px) saturate(180%);
  border-bottom: 1px solid rgba(180, 170, 220, 0.25);
  box-shadow: 0 4px 20px rgba(120, 100, 180, 0.06);
}

.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: 700;
  font-size: 1.25rem;
  text-decoration: none;
  color: #2b1e3a;
  letter-spacing: 0.5px;
}

.logo-icon {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  background: linear-gradient(135deg, #b8a9e8, #f0b5d4);
  color: #fff;
  box-shadow: 0 4px 12px rgba(180, 140, 220, 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: #3c2f4a;
  transition: all 0.2s;
  position: relative;
  padding-bottom: 4px;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2.5px;
  background: linear-gradient(90deg, #c4b0f0, #f5b5d0);
  border-radius: 4px;
  transition: width 0.25s ease;
}

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

.main-nav a:hover {
  color: #6a4f8a;
}

.nav-cta {
  padding: 8px 22px;
  border-radius: 40px;
  color: #fff !important;
  font-weight: 600;
  background: linear-gradient(135deg, #b8a9e8, #f0b5d4);
  box-shadow: 0 4px 12px rgba(180, 140, 220, 0.25);
  transition: all 0.25s;
}

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(180, 140, 220, 0.35);
}

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

.menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: #3c2f4a;
  cursor: pointer;
}

/* 首页Hero — 柔和玻璃 + 渐变 */
.hero {
  min-height: 70vh;
  display: flex;
  align-items: center;
  position: relative;
  padding-top: 100px;
}

.hero::before {
  content: '';
  position: absolute;
  top: -20%;
  right: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(200, 180, 240, 0.2) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

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

.hero-eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 6px 18px;
  border-radius: 40px;
  margin-bottom: 16px;
  background: rgba(180, 160, 220, 0.2);
  backdrop-filter: blur(4px);
  color: #5a4a7a;
  letter-spacing: 1px;
  border: 1px solid rgba(200, 180, 240, 0.3);
}

.hero h1 {
  font-size: 3rem;
  line-height: 1.15;
  margin-bottom: 20px;
  font-weight: 800;
  color: #201a2e;
  letter-spacing: -0.5px;
}

.hero h1 span {
  background: linear-gradient(135deg, #b8a9e8, #f0b5d4);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.1rem;
  opacity: 0.7;
  max-width: 560px;
  margin-bottom: 32px;
  color: #3f3550;
  line-height: 1.6;
}

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

.hero-image {
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 12px 40px rgba(140, 120, 200, 0.12);
  background: rgba(255, 255, 255, 0.3);
  backdrop-filter: blur(6px);
  border: 1px solid rgba(255, 255, 255, 0.5);
}

.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: all 0.25s;
  font-size: 0.95rem;
}

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, #b8a9e8, #f0b5d4);
  box-shadow: 0 4px 14px rgba(180, 140, 220, 0.25);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(180, 140, 220, 0.35);
}

.btn-outline {
  background: transparent;
  border: 1.5px solid #c4b0e8;
  color: #4f3d6a;
}

.btn-outline:hover {
  background: rgba(180, 160, 220, 0.08);
  border-color: #b8a9e8;
  transform: translateY(-2px);
}

/* 标签/标题 */
.section-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 3px;
  margin-bottom: 12px;
  color: #7a669a;
  text-transform: uppercase;
  background: rgba(200, 180, 240, 0.15);
  padding: 4px 14px;
  border-radius: 30px;
}

.section-title {
  font-size: 2.2rem;
  margin-bottom: 14px;
  font-weight: 700;
  color: #1e182a;
}

.section-desc {
  max-width: 600px;
  opacity: 0.7;
  margin-bottom: 40px;
  color: #3f3550;
  line-height: 1.7;
}

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

.category-card {
  border-radius: 20px;
  padding: 28px;
  background: rgba(255, 255, 255, 0.5);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.7);
  box-shadow: 0 4px 16px rgba(140, 120, 200, 0.06);
  transition: all 0.3s;
}

.category-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 32px rgba(140, 120, 200, 0.12);
  background: rgba(255, 255, 255, 0.7);
  border-color: rgba(200, 180, 240, 0.4);
}

.card-icon {
  width: 50px;
  height: 50px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  font-size: 1.4rem;
  background: linear-gradient(135deg, #d9cff5, #f5d0e0);
  color: #4f3d6a;
  box-shadow: 0 4px 10px rgba(180, 140, 220, 0.1);
}

.card-link {
  font-weight: 600;
  font-size: 0.85rem;
  text-decoration: none;
  color: #6a4f8a;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: 0.2s;
}

.card-link:hover {
  color: #8a6ab0;
  gap: 10px;
}

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

.feature-image {
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 8px 28px rgba(140, 120, 200, 0.08);
  background: rgba(255, 255, 255, 0.3);
  backdrop-filter: blur(4px);
  border: 1px solid rgba(255, 255, 255, 0.5);
}

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

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

.feature-list {
  list-style: none;
}

.feature-list li {
  padding: 8px 0;
  display: flex;
  align-items: center;
  gap: 10px;
  color: #3f3550;
}

.feature-list li::before {
  content: '✦';
  font-weight: 700;
  color: #b8a9e8;
  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: 28px 16px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.4);
  backdrop-filter: blur(6px);
  border: 1px solid rgba(255, 255, 255, 0.6);
  box-shadow: 0 4px 12px rgba(140, 120, 200, 0.05);
  transition: 0.2s;
}

.stat-item:hover {
  background: rgba(255, 255, 255, 0.6);
  transform: translateY(-2px);
}

.stat-number {
  font-size: 2.4rem;
  font-weight: 800;
  background: linear-gradient(135deg, #b8a9e8, #f0b5d4);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  font-size: 0.9rem;
  opacity: 0.6;
  margin-top: 6px;
  color: #3f3550;
}

/* 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;
  background: rgba(255, 255, 255, 0.4);
  backdrop-filter: blur(6px);
  border: 1px solid rgba(255, 255, 255, 0.6);
  transition: all 0.3s;
  box-shadow: 0 4px 12px rgba(140, 120, 200, 0.05);
}

.content-wall-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 32px rgba(140, 120, 200, 0.12);
  background: rgba(255, 255, 255, 0.6);
}

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

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

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

.faq-item {
  border: 1px solid rgba(200, 180, 240, 0.2);
  border-radius: 16px;
  margin-bottom: 8px;
  overflow: hidden;
  cursor: pointer;
  background: rgba(255, 255, 255, 0.3);
  backdrop-filter: blur(4px);
  transition: 0.2s;
}

.faq-item:hover {
  background: rgba(255, 255, 255, 0.5);
}

.faq-item .faq-question {
  padding: 18px 22px;
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  color: #2b1e3a;
  font-size: 1rem;
}

.faq-item .faq-question::after {
  content: '+';
  font-size: 1.3rem;
  color: #b8a9e8;
  transition: 0.2s;
}

.faq-item.open .faq-question::after {
  content: '−';
}

.faq-item .faq-answer {
  padding: 0 22px 18px;
  display: none;
  opacity: 0.7;
  color: #3f3550;
  line-height: 1.6;
}

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

/* CTA横幅 */
.cta-banner {
  padding: 60px 24px;
  text-align: center;
  border-radius: 24px;
  background: linear-gradient(135deg, #b8a9e8, #f0b5d4);
  box-shadow: 0 12px 40px rgba(180, 140, 220, 0.2);
  color: #fff;
}

.cta-banner h2 {
  color: #fff;
  font-size: 2rem;
  margin-bottom: 12px;
}

.cta-banner p {
  opacity: 0.9;
  margin-bottom: 24px;
}

.cta-banner .btn-primary {
  background: #fff;
  color: #4f3d6a;
  box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}

.cta-banner .btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(0,0,0,0.08);
}

/* 页脚 */
.site-footer {
  padding: 56px 0 28px;
  background: rgba(255, 245, 240, 0.5);
  backdrop-filter: blur(8px);
  border-top: 1px solid rgba(200, 180, 240, 0.15);
}

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

.footer-brand {
  color: #2b1e3a;
}

.footer-col h4 {
  font-weight: 600;
  margin-bottom: 12px;
  color: #3c2f4a;
}

.footer-col a {
  display: block;
  text-decoration: none;
  color: #5a4a7a;
  padding: 4px 0;
  font-size: 0.9rem;
  transition: 0.2s;
}

.footer-col a:hover {
  color: #8a6ab0;
  padding-left: 4px;
}

.footer-bottom {
  border-top: 1px solid rgba(180, 160, 220, 0.15);
  margin-top: 40px;
  padding-top: 20px;
  text-align: center;
  font-size: 0.85rem;
  color: #5a4a7a;
}

/* 工具类 */
.text-accent {
  color: #8a6ab0;
}

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

.seo-description {
  max-width: 600px;
  margin: 0 auto 48px;
  opacity: 0.7;
  color: #3f3550;
  line-height: 1.7;
}

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

/* 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: rgba(255, 245, 240, 0.95);
    backdrop-filter: blur(16px);
    padding: 20px 24px;
    border-bottom: 1px solid rgba(200, 180, 240, 0.2);
    gap: 16px;
  }
  .hero h1 { font-size: 2.2rem; }
  .section-title { 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; }
  .hero h1 { font-size: 1.8rem; }
  .stat-number { font-size: 1.8rem; }
}