/* =============================================
   香蕉视频 - 品牌官网主样式
   高端女性成长社群 · 低饱和高级配色
   ============================================= */

/* ---- CSS变量 ---- */
:root {
  --cream: #faf8f4;
  --ivory: #f5f0e8;
  --oat: #e8e0d0;
  --warm-gray: #c8bfb0;
  --soft-gold: #c9a96e;
  --dusty-rose: #c8a4a0;
  --muted-sage: #9aab96;
  --charcoal: #3a3530;
  --dark-brown: #2c2520;
  --text-primary: #2c2520;
  --text-secondary: #6b6058;
  --text-light: #9a8f84;
  --border-light: #e8e0d0;
  --font-serif: 'Georgia', 'STSong', '宋体', serif;
  --font-sans: 'PingFang SC', 'Microsoft YaHei', '微软雅黑', sans-serif;
  --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---- 基础重置 ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-sans);
  color: var(--text-primary);
  background: var(--cream);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }

/* ---- 通用工具类 ---- */
.container { max-width: 1200px; margin: 0 auto; padding: 0 40px; }
.container-narrow { max-width: 860px; margin: 0 auto; padding: 0 40px; }
.section { padding: 100px 0; }
.section-sm { padding: 60px 0; }
.text-center { text-align: center; }
.text-gold { color: var(--soft-gold); }
.bg-ivory { background: var(--ivory); }
.bg-oat { background: var(--oat); }

/* ---- 标题系统 ---- */
.section-label {
  font-size: 0.75rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--soft-gold);
  font-weight: 500;
  margin-bottom: 16px;
  display: block;
}
.section-title {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 3vw, 2.8rem);
  font-weight: normal;
  color: var(--text-primary);
  line-height: 1.35;
  margin-bottom: 20px;
}
.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.9;
  max-width: 600px;
}
.section-subtitle.center { margin: 0 auto; }

/* ---- 按钮 ---- */
.btn {
  display: inline-block;
  padding: 14px 36px;
  font-size: 0.9rem;
  letter-spacing: 0.08em;
  border: 1.5px solid var(--charcoal);
  color: var(--charcoal);
  background: transparent;
  cursor: pointer;
  transition: var(--transition);
  font-family: var(--font-sans);
}
.btn:hover { background: var(--charcoal); color: var(--cream); }
.btn-gold {
  border-color: var(--soft-gold);
  color: var(--soft-gold);
}
.btn-gold:hover { background: var(--soft-gold); color: #fff; }
.btn-fill {
  background: var(--charcoal);
  color: var(--cream);
  border-color: var(--charcoal);
}
.btn-fill:hover { background: var(--dark-brown); border-color: var(--dark-brown); }

/* ---- 导航 ---- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(250, 248, 244, 0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border-light);
  transition: box-shadow var(--transition);
}
.site-header.scrolled { box-shadow: 0 2px 20px rgba(44,37,32,0.06); }
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 40px;
}
.nav-logo {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  color: var(--text-primary);
  letter-spacing: 0.05em;
  font-weight: normal;
}
.nav-logo span { color: var(--soft-gold); }
.nav-menu {
  display: flex;
  gap: 36px;
  align-items: center;
}
.nav-menu a {
  font-size: 0.88rem;
  color: var(--text-secondary);
  letter-spacing: 0.05em;
  transition: color var(--transition);
  position: relative;
}
.nav-menu a::after {
  content: '';
  position: absolute;
  bottom: -3px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--soft-gold);
  transition: width var(--transition);
}
.nav-menu a:hover, .nav-menu a.active { color: var(--text-primary); }
.nav-menu a:hover::after, .nav-menu a.active::after { width: 100%; }
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 1.5px;
  background: var(--text-primary);
  transition: var(--transition);
}

/* ---- 搜索栏 ---- */
.search-bar {
  background: var(--ivory);
  border-bottom: 1px solid var(--border-light);
  padding: 10px 0;
}
.search-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 40px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.search-input {
  flex: 1;
  max-width: 480px;
  border: 1px solid var(--warm-gray);
  background: #fff;
  padding: 8px 16px;
  font-size: 0.88rem;
  color: var(--text-primary);
  font-family: var(--font-sans);
  outline: none;
  transition: border-color var(--transition);
}
.search-input:focus { border-color: var(--soft-gold); }
.search-input::placeholder { color: var(--text-light); }
.search-btn {
  padding: 8px 20px;
  background: var(--charcoal);
  color: var(--cream);
  border: none;
  font-size: 0.85rem;
  cursor: pointer;
  font-family: var(--font-sans);
  letter-spacing: 0.05em;
  transition: background var(--transition);
}
.search-btn:hover { background: var(--dark-brown); }
.search-tip {
  font-size: 0.78rem;
  color: var(--text-light);
}

/* ---- 首屏 Hero ---- */
.hero {
  position: relative;
  min-height: 88vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
}
.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg, rgba(250,248,244,0.88) 40%, rgba(250,248,244,0.3) 100%);
}
.hero-content {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 40px;
  max-width: 620px;
  padding-left: 80px;
}
.hero-label {
  font-size: 0.75rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--soft-gold);
  margin-bottom: 24px;
  display: block;
  animation: fadeUp 0.8s ease both;
}
.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(2.2rem, 4.5vw, 3.8rem);
  font-weight: normal;
  line-height: 1.25;
  color: var(--text-primary);
  margin-bottom: 28px;
  animation: fadeUp 0.8s 0.15s ease both;
}
.hero-title em {
  font-style: normal;
  color: var(--soft-gold);
}
.hero-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.9;
  margin-bottom: 44px;
  animation: fadeUp 0.8s 0.3s ease both;
}
.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  animation: fadeUp 0.8s 0.45
s ease both;
}

/* ---- 视频卡片 ---- */
.video-card {
  position: relative;
  overflow: hidden;
  cursor: pointer;
  background: var(--oat);
}
.video-card img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.video-card:hover img { transform: scale(1.04); }
.video-play-btn {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition);
  background: rgba(44,37,32,0.25);
}
.video-card:hover .video-play-btn { opacity: 1; }
.play-icon {
  width: 60px;
  height: 60px;
  background: rgba(255,255,255,0.92);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transform: scale(0.85);
  transition: transform var(--transition);
}
.video-card:hover .play-icon { transform: scale(1); }
.play-icon::after {
  content: '';
  border-left: 18px solid var(--charcoal);
  border-top: 11px solid transparent;
  border-bottom: 11px solid transparent;
  margin-left: 4px;
}
.video-meta {
  padding: 16px 20px 20px;
}
.video-meta .tag {
  font-size: 0.72rem;
  letter-spacing: 0.15em;
  color: var(--soft-gold);
  text-transform: uppercase;
  margin-bottom: 8px;
  display: block;
}
.video-meta h3 {
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-primary);
  line-height: 1.5;
  margin-bottom: 10px;
}
.video-stats {
  display: flex;
  gap: 16px;
  font-size: 0.78rem;
  color: var(--text-light);
}
.video-stats span::before {
  margin-right: 4px;
}

/* ---- 社群成员卡片 ---- */
.member-card {
  background: #fff;
  padding: 32px 28px;
  border: 1px solid var(--border-light);
  transition: box-shadow var(--transition), transform var(--transition);
}
.member-card:hover {
  box-shadow: 0 8px 32px rgba(44,37,32,0.08);
  transform: translateY(-4px);
}
.member-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  object-fit: cover;
  margin-bottom: 20px;
}
.member-name {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}
.member-role {
  font-size: 0.8rem;
  color: var(--soft-gold);
  letter-spacing: 0.08em;
  margin-bottom: 16px;
}
.member-quote {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.8;
  font-style: italic;
}
.member-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 16px;
}
.tag-pill {
  font-size: 0.72rem;
  padding: 3px 10px;
  border: 1px solid var(--border-light);
  color: var(--text-secondary);
  border-radius: 20px;
}

/* ---- 内容文章卡片 ---- */
.article-card {
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid var(--border-light);
  overflow: hidden;
  transition: box-shadow var(--transition);
}
.article-card:hover { box-shadow: 0 6px 24px rgba(44,37,32,0.08); }
.article-card img {
  width: 100%;
  aspect-ratio: 3/2;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.article-card:hover img { transform: scale(1.03); }
.article-card-body {
  padding: 24px 24px 28px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.article-card-body .tag {
  font-size: 0.72rem;
  letter-spacing: 0.15em;
  color: var(--soft-gold);
  text-transform: uppercase;
  margin-bottom: 10px;
  display: block;
}
.article-card-body h3 {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: normal;
  color: var(--text-primary);
  line-height: 1.6;
  margin-bottom: 12px;
}
.article-card-body p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.8;
  flex: 1;
}
.article-card-footer {
  padding: 12px 24px 20px;
  border-top: 1px solid var(--border-light);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.78rem;
  color: var(--text-light);
}

/* ---- 评价/共鸣模块 ---- */
.review-card {
  background: var(--ivory);
  padding: 36px 32px;
  border-left: 3px solid var(--soft-gold);
  transition: box-shadow var(--transition);
}
.review-card:hover { box-shadow: 0 4px 20px rgba(44,37,32,0.07); }
.review-text {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.9;
  font-style: italic;
  margin-bottom: 20px;
}
.review-author {
  display: flex;
  align-items: center;
  gap: 12px;
}
.review-author img {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  object-fit: cover;
}
.review-author-info .name {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-primary);
}
.review-author-info .role {
  font-size: 0.78rem;
  color: var(--text-light);
}

/* ---- FAQ ---- */
.faq-item {
  border-bottom: 1px solid var(--border-light);
}
.faq-question {
  width: 100%;
  background: none;
  border: none;
  text-align: left;
  padding: 22px 0;
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-primary);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  font-family: var(--font-sans);
  transition: color var(--transition);
}
.faq-question:hover { color: var(--soft-gold); }
.faq-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  position: relative;
}
.faq-icon::before, .faq-icon::after {
  content: '';
  position: absolute;
  background: currentColor;
  transition: transform var(--transition), opacity var(--transition);
}
.faq-icon::before { width: 14px; height: 1.5px; top: 50%; left: 50%; transform: translate(-50%,-50%); }
.faq-icon::after { width: 1.5px; height: 14px; top: 50%; left: 50%; transform: translate(-50%,-50%); }
.faq-item.open .faq-icon::after { transform: translate(-50%,-50%) rotate(90deg); opacity: 0; }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding var(--transition);
}
.faq-item.open .faq-answer { max-height: 400px; padding-bottom: 20px; }
.faq-answer p {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.9;
}

/* ---- 网格布局 ---- */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.grid-2-1 { display: grid; grid-template-columns: 2fr 1fr; gap: 40px; align-items: center; }
.grid-1-2 { display: grid; grid-template-columns: 1fr 2fr; gap: 40px; align-items: center; }

/* ---- 分隔线 ---- */
.divider {
  width: 48px;
  height: 1.5px;
  background: var(--soft-gold);
  margin: 20px 0;
}
.divider.center { margin: 20px auto; }

/* ---- 引言块 ---- */
.quote-block {
  border-left: 3px solid var(--soft-gold);
  padding: 20px 28px;
  background: var(--ivory);
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--text-secondary);
  font-style: italic;
  line-height: 1.8;
}

/* ---- 关键词矩阵 ---- */
.keyword-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.keyword-item {
  padding: 10px 20px;
  border: 1px solid var(--border-light);
  font-size: 0.88rem;
  color: var(--text-secondary);
  letter-spacing: 0.05em;
  transition: all var(--transition);
}
.keyword-item:hover {
  border-color: var(--soft-gold);
  color: var(--soft-gold);
  background: rgba(201,169,110,0.05);
}

/* ---- 成长路径 ---- */
.growth-step {
  display: flex;
  gap: 28px;
  padding: 32px 0;
  border-bottom: 1px solid var(--border-light);
}
.growth-step:last-child { border-bottom: none; }
.step-number {
  font-family: var(--font-serif);
  font-size: 2.5rem;
  color: var(--oat);
  font-weight: normal;
  line-height: 1;
  flex-shrink: 0;
  width: 60px;
}
.step-content h3 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 10px;
}
.step-content p {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* ---- 页脚 ---- */
.site-footer {
  background: var(--dark-brown);
  color: rgba(250,248,244,0.7);
  padding: 64px 0 32px;
}
.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 40px;
}
.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(250,248,244,0.12);
}
.footer-brand .logo {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  color: var(--cream);
  margin-bottom: 16px;
}
.footer-brand .logo span { color: var(--soft-gold); }
.footer-brand p {
  font-size: 0.85rem;
  line-height: 1.9;
  margin-bottom: 24px;
}
.footer-col h4 {
  font-size: 0.8rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cream);
  margin-bottom: 20px;
}
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col ul a {
  font-size: 0.85rem;
  transition: color var(--transition);
}
.footer-col ul a:hover { color: var(--soft-gold); }
.footer-qr {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}
.qr-item { text-align: center; }
.qr-placeholder {
  width: 80px;
  height: 80px;
  background: rgba(250,248,244,0.1);
  border: 1px solid rgba(250,248,244,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.65rem;
  color: rgba(250,248,244,0.5);
  margin-bottom: 8px;
}
.qr-item span { font-size: 0.72rem; color: rgba(250,248,244,0.5); }
.footer-bottom {
  padding-top: 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.78rem;
}
.footer-bottom a:hover { color: var(--soft-gold); }
.social-links { display: flex; gap: 16px; }
.social-links a { transition: color var(--transition); }
.social-links a:hover { color: var(--soft-gold); }

/* ---- 动画 ---- */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}
.fade-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---- 面包屑 ---- */
.breadcrumb {
  padding: 14px 0;
  font-size: 0.8rem;
  color: var(--text-light);
  display: flex;
  gap: 8px;
  align-items: center;
}
.breadcrumb a { transition: color var(--transition); }
.breadcrumb a:hover { color: var(--soft-gold); }
.breadcrumb .sep { color: var(--warm-gray); }

/* ---- 页面顶部横幅 ---- */
.page-banner {
  background: var(--ivory);
  padding: 80px 0 60px;
  text-align: center;
  border-bottom: 1px solid var(--border-light);
}
.page-banner .section-label { justify-content: center; display: flex; }
.page-banner h1 {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: normal;
  color: var(--text-primary);
  margin-bottom: 16px;
}
.page-banner p {
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.9;
}

/* ---- 响应式 ---- */
@media (max-width: 1024px) {
  .container, .container-narrow { padding: 0 24px; }
  .nav-inner { padding: 0 24px; }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 32px; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .hero-content { padding-left: 24px; }
}

@media (max-width: 768px) {
  .section { padding: 64px 0; }
  .nav-menu { display: none; }
  .nav-menu.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--cream);
    padding: 24px 24px 32px;
    border-bottom: 1px solid var(--border-light);
    gap: 20px;
    z-index: 99;
  }
  .nav-toggle { display: flex; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .grid-2-1, .grid-1-2 { grid-template-columns: 1fr; }
  .hero { min-height: 70vh; }
  .hero-content { padding: 0 24px; max-width: 100%; }
  .hero-title { font-size: 2rem; }
  .footer-top { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .search-inner { flex-wrap: wrap; }
  .search-input { max-width: 100%; }
}

@media (max-width: 480px) {
  .container, .container-narrow { padding: 0 16px; }
  .nav-inner { padding: 0 16px; }
  .footer-inner { padding: 0 16px; }
  .hero-actions { flex-direction: column; }
  .btn { width: 100%; text-align: center; }
}