/* =============================================
   蘑菇视频 - 主样式文件
   风格：高端优雅·轻奢简约·温暖治愈
   色系：浅米白 + 莫兰迪（奶茶棕、雾蓝、浅杏、豆沙粉）
   ============================================= */

/* ---- CSS变量 ---- */
:root {
  --color-bg: #faf8f5;
  --color-white: #ffffff;
  --color-primary: #c8a882;       /* 奶茶棕 */
  --color-secondary: #9fb3c8;     /* 雾蓝 */
  --color-accent: #f2e8d9;        /* 浅杏 */
  --color-rose: #d4a5a0;          /* 豆沙粉 */
  --color-text: #3a3530;          /* 深棕文字 */
  --color-text-light: #7a7068;    /* 中灰文字 */
  --color-text-muted: #b0a89e;    /* 浅灰文字 */
  --color-border: #e8e2d9;        /* 边框 */
  --color-shadow: rgba(58,53,48,0.08);

  --font-body: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'STHeiti', sans-serif;
  --font-title: 'STSong', 'SimSun', 'PingFang SC', serif;

  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;

  --shadow-sm: 0 2px 12px var(--color-shadow);
  --shadow-md: 0 4px 24px var(--color-shadow);
  --shadow-lg: 0 8px 40px rgba(58,53,48,0.12);
  --shadow-hover: 0 12px 48px rgba(200,168,130,0.22);

  --transition: 0.3s ease;
  --max-width: 1200px;
}

/* ---- 重置 ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-body);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

/* ---- 动画 ---- */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes breathe {
  0%, 100% { transform: scale(1); opacity: 0.6; }
  50%       { transform: scale(1.15); opacity: 1; }
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-8px); }
}
@keyframes shimmer {
  0%   { background-position: -200% center; }
  100% { background-position: 200% center; }
}

/* ---- 粒子 ---- */
.particle {
  position: absolute;
  border-radius: 50%;
  background: rgba(200,168,130,0.35);
  animation: breathe var(--dur, 4s) ease-in-out infinite;
  pointer-events: none;
}

/* ---- 顶部导航 ---- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(250,248,245,0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
  box-shadow: 0 2px 16px rgba(58,53,48,0.06);
}
.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  height: 68px;
  display: flex;
  align-items: center;
  gap: 32px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-title);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-text);
  white-space: nowrap;
  flex-shrink: 0;
}
.logo-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-rose));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  box-shadow: 0 4px 12px rgba(200,168,130,0.3);
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
}
.main-nav a {
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.88rem;
  color: var(--color-text-light);
  transition: var(--transition);
  white-space: nowrap;
}
.main-nav a:hover,
.main-nav a.active {
  background: var(--color-accent);
  color: var(--color-primary);
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.btn-download {
  padding: 8px 20px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-rose));
  color: #fff;
  border-radius: 20px;
  font-size: 0.88rem;
  font-weight: 600;
  box-shadow: 0 4px 14px rgba(200,168,130,0.35);
  transition: var(--transition);
}
.btn-download:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(200,168,130,0.45);
}
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 6px;
}
.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: var(--transition);
}

/* ---- 搜索框 ---- */
.search-bar-wrapper {
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  padding: 10px 24px;
}
.search-bar-inner {
  max-width: 600px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  background: var(--color-bg);
  border: 1.5px solid var(--color-border);
  border-radius: 28px;
  overflow: hidden;
  transition: var(--transition);
}
.search-bar-inner:focus-within {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(200,168,130,0.15);
}
#searchInput {
  flex: 1;
  padding: 10px 18px;
  background: transparent;
  border: none;
  outline: none;
  font-size: 0.88rem;
  color: var(--color-text);
  font-family: var(--font-body);
}
#searchInput::placeholder { color: var(--color-text-muted); }
.search-btn {
  padding: 8px 18px;
  font-size: 1rem;
  color: var(--color-primary);
  transition: var(--transition);
}
.search-btn:hover { transform: scale(1.1); }

/* ---- 面包屑 ---- */
.breadcrumb {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 12px 24px;
  font-size: 0.82rem;
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  gap: 8px;
}
.breadcrumb a { color: var(--color-primary); }
.breadcrumb a:hover { text-decoration: underline; }

/* ---- Hero区 ---- */
.hero-section {
  position: relative;
  height: 88vh;
  min-height: 560px;
  max-height: 800px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  transform: scale(1.05);
  transition: transform 0.1s linear;
  filter: brightness(0.55) saturate(0.85);
}
.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(250,248,245,0.1) 0%, rgba(58,53,48,0.55) 100%);
}
.hero-particles {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 0 24px;
  max-width: 760px;
  animation: fadeInUp 0.9s ease both;
}
.hero-badge {
  display: inline-block;
  background: rgba(200,168,130,0.25);
  border: 1px solid rgba(200,168,130,0.5);
  color: #f5e8d5;
  padding: 6px 20px;
  border-radius: 20px;
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  margin-bottom: 20px;
  backdrop-filter: blur(8px);
}
.hero-title {
  font-family: var(--font-title);
  font-size: clamp(2rem, 5vw, 3.5rem);
  color: #fff;
  line-height: 1.3;
  margin-bottom: 18px;
  text-shadow: 0 2px 20px rgba(0,0,0,0.3);
}
.hero-title span {
  color: var(--color-primary);
  display: block;
  font-size: 0.6em;
  letter-spacing: 0.2em;
  margin-bottom: 8px;
}
.hero-subtitle {
  color: rgba(255,255,255,0.88);
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: 32px;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}
.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ---- 通用按钮 ---- */
.btn-primary {
  padding: 13px 32px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-rose));
  color: #fff;
  border-radius: 28px;
  font-size: 0.95rem;
  font-weight: 600;
  box-shadow: 0 6px 20px rgba(200,168,130,0.4);
  transition: var(--transition);
  display: inline-block;
}
.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 28px rgba(200,168,130,0.5);
}
.btn-outline {
  padding: 13px 32px;
  background: rgba(255,255,255,0.15);
  color: #fff;
  border: 1.5px solid rgba(255,255,255,0.5);
  border-radius: 28px;
  font-size: 0.95rem;
  font-weight: 600;
  backdrop-filter: blur(8px);
  transition: var(--transition);
  display: inline-block;
}
.btn-outline:hover {
  background: rgba(255,255,255,0.25);
  transform: translateY(-3px);
}

/* ---- 通用Section ---- */
.section {
  padding: 80px 0;
}
.section-alt {
  background: var(--color-white);
}
.section-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}
.section-header {
  text-align: center;
  margin-bottom: 48px;
}
.section-tag {
  display: inline-block;
  background: var(--color-accent);
  color: var(--color-primary);
  padding: 4px 16px;
  border-radius: 12px;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  margin-bottom: 14px;
}
.section-title {
  font-family: var(--font-title);
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  color: var(--color-text);
  line-height: 1.35;
  margin-bottom: 14px;
}
.section-desc {
  color: var(--color-text-light);
  font-size: 0.95rem;
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.8;
}

/* ---- 视频卡片 ---- */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}
.video-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: var(--transition);
  cursor: pointer;
}
.video-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
}
.video-thumb {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--color-accent);
}
.video-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.video-card:hover .video-thumb img {
  transform: scale(1.06);
}
.video-play-btn {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(58,53,48,0.25);
  opacity: 0;
  transition: var(--transition);
}
.video-card:hover .video-play-btn {
  opacity: 1;
}
.play-icon {
  width: 52px;
  height: 52px;
  background: rgba(255,255,255,0.92);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(0,0,0,0.2);
  transform: scale(0.85);
  transition: var(--transition);
}
.play-icon::after {
  content: '';
  display: block;
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 9px 0 9px 16px;
  border-color: transparent transparent transparent var(--color-primary);
  margin-left: 4px;
}
.video-card:hover .play-icon {
  transform: scale(1);
}
.video-glow {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 60%;
  background: linear-gradient(transparent, rgba(58,53,48,0.4));
  pointer-events: none;
}
.video-info {
  padding: 16px 18px 18px;
}
.video-tag {
  display: inline-block;
  background: var(--color-accent);
  color: var(--color-primary);
  padding: 3px 10px;
  border-radius: 8px;
  font-size: 0.72rem;
  font-weight: 600;
  margin-bottom: 8px;
}
.video-title {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.5;
  margin-bottom: 10px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.video-meta {
  display: flex;
  gap: 12px;
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

/* ---- 故事卡片 ---- */
.story-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 28px;
}
.story-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: var(--transition);
}
.story-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
}
.story-img {
  aspect-ratio: 3/2;
  overflow: hidden;
}
.story-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.story-card:hover .story-img img {
  transform: scale(1.05);
}
.story-body {
  padding: 20px 22px 24px;
}
.story-author {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-bottom: 8px;
}
.story-title {
  font-family: var(--font-title);
  font-size: 1.1rem;
  color: var(--color-text);
  margin-bottom: 10px;
  line-height: 1.4;
}
.story-excerpt {
  font-size: 0.88rem;
  color: var(--color-text-light);
  line-height: 1.8;
  margin-bottom: 14px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.story-link {
  font-size: 0.85rem;
  color: var(--color-primary);
  font-weight: 600;
  transition: var(--transition);
}
.story-link:hover { letter-spacing: 0.05em; }

/* ---- 影像画廊 ---- */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: auto;
  gap: 16px;
}
.gallery-item {
  border-radius: var(--radius-md);
  overflow: hidden;
  aspect-ratio: 1;
  cursor: pointer;
  transition: var(--transition);
}
.gallery-item.large {
  grid-column: span 2;
  aspect-ratio: 2/1;
}
.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.gallery-item:hover {
  box-shadow: var(--shadow-hover);
}
.gallery-item:hover img {
  transform: scale(1.05);
}

/* ---- AI模块 ---- */
.ai-section {
  background: linear-gradient(135deg, var(--color-bg) 0%, rgba(159,179,200,0.1) 100%);
}
.ai-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}
.ai-text p {
  color: var(--color-text-light);
  line-height: 1.9;
  margin-bottom: 24px;
}
.ai-features {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.ai-feature-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}
.ai-feature-icon {
  width: 40px;
  height: 40px;
  background: var(--color-accent);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}
.ai-demo {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  padding: 32px;
  box-shadow: var(--shadow-lg);
}
.ai-demo-prompt {
  background: var(--color-bg);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: 16px;
  border-left: 3px solid var(--color-primary);
}
.ai-demo-result {
  background: linear-gradient(135deg, var(--color-accent), rgba(212,165,160,0.15));
  border-radius: var(--radius-md);
  padding: 18px 20px;
  font-size: 0.92rem;
  color: var(--color-text);
  line-height: 1.8;
  font-family: var(--font-title);
  position: relative;
}
.ai-demo-result::before {
  content: '"';
  font-size: 3rem;
  color: var(--color-primary);
  opacity: 0.3;
  position: absolute;
  top: -8px;
  left: 12px;
  font-family: serif;
}

/* ---- 创作者 ---- */
.creators-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 20px;
}
.creator-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 28px 20px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}
.creator-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.creator-avatar {
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, var(--color-accent), rgba(212,165,160,0.3));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  margin: 0 auto 14px;
}
.creator-name {
  font-family: var(--font-title);
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 4px;
}
.creator-role {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  margin-bottom: 8px;
}
.creator-fans {
  font-size: 0.82rem;
  color: var(--color-primary);
  font-weight: 600;
}

/* ---- 评价 ---- */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}
.review-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}
.review-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}
.review-stars {
  color: #f0b429;
  font-size: 0.9rem;
  margin-bottom: 12px;
  letter-spacing: 2px;
}
.review-text {
  font-size: 0.88rem;
  color: var(--color-text-light);
  line-height: 1.8;
  margin-bottom: 16px;
}
.review-user {
  display: flex;
  align-items: center;
  gap: 12px;
}
.review-avatar {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-rose));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 0.9rem;
  font-weight: 700;
  flex-shrink: 0;
}
.review-name {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-text);
}
.review-date {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

/* ---- 合作伙伴 ---- */
.partners-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 16px;
  margin-bottom: 48px;
}
.partner-item {
  background: var(--color-white);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 18px;
  text-align: center;
  font-size: 0.85rem;
  color: var(--color-text-light);
  transition: var(--transition);
}
.partner-item:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-accent);
}

/* ---- FAQ ---- */
.faq-list {
  max-width: 760px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.faq-item {
  background: var(--color-white);
  border-radius: var(--radius-md);
  border: 1.5px solid var(--color-border);
  overflow: hidden;
  transition: var(--transition);
}
.faq-item.open {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 22px;
  cursor: pointer;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--color-text);
  gap: 16px;
}
.faq-icon {
  width: 24px;
  height: 24px;
  background: var(--color-accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  color: var(--color-primary);
  flex-shrink: 0;
  transition: var(--transition);
}
.faq-item.open .faq-icon {
  transform: rotate(45deg);
  background: var(--color-primary);
  color: #fff;
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
  padding: 0 22px;
  font-size: 0.88rem;
  color: var(--color-text-light);
  line-height: 1.8;
}
.faq-item.open .faq-answer {
  max-height: 200px;
  padding: 0 22px 18px;
}

/* ---- 联系 ---- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}
.contact-info h3 {
  font-family: var(--font-title);
  font-size: 1.4rem;
  margin-bottom: 24px;
}
.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 18px;
  font-size: 0.9rem;
  color: var(--color-text-light);
}
.contact-icon {
  font-size: 1.2rem;
  flex-shrink: 0;
  margin-top: 2px;
}
.qr-placeholder {
  width: 100px;
  height: 100px;
  background: var(--color-accent);
  border: 2px dashed var(--color-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  font-size: 0.72rem;
  color: var(--color-primary);
  line-height: 1.5;
  margin-top: 16px;
}

/* ---- 页面Hero（内页） ---- */
.page-hero {
  background: linear-gradient(135deg, var(--color-accent) 0%, rgba(212,165,160,0.2) 100%);
  padding: 64px 24px;
  text-align: center;
}
.page-hero h1 {
  font-family: var(--font-title);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  color: var(--color-text);
  margin: 12px 0;
}
.page-hero p {
  color: var(--color-text-light);
  font-size: 1rem;
  max-width: 560px;
  margin: 0 auto;
}

/* ---- 页脚 ---- */
.site-footer {
  background: #2e2a26;
  color: rgba(255,255,255,0.75);
  padding: 60px 0 0;
}
.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}
.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
.footer-brand .logo {
  color: rgba(255,255,255,0.9);
  margin-bottom: 16px;
}
.footer-brand p {
  font-size: 0.85rem;
  line-height: 1.8;
  color: rgba(255,255,255,0.55);
}
.footer-col h4 {
  font-size: 0.9rem;
  font-weight: 700;
  color: rgba(255,255,255,0.9);
  margin-bottom: 16px;
  letter-spacing: 0.05em;
}
.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-col ul li a {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.5);
  transition: var(--transition);
}
.footer-col ul li a:hover {
  color: var(--color-primary);
}
.footer-bottom {
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.footer-bottom p {
  font-size: 0.78rem;
  color: rgba(255,255,255,0.35);
}
.update-time {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.3);
  margin-top: 4px;
}
.footer-social {
  display: flex;
  gap: 10px;
}
.social-btn {
  width: 36px;
  height: 36px;
  background: rgba(255,255,255,0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.6);
  transition: var(--transition);
}
.social-btn:hover {
  background: var(--color-primary);
  color: #fff;
}

/* ---- 响应式 ---- */
@media (max-width: 1024px) {
  .footer-top {
    grid-template-columns: 1fr 1fr;
  }
  .ai-inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .contact-grid {
    grid-template-columns: 1fr;
  }
}
@media (max-width: 768px) {
  .main-nav {
    display: none;
    position: fixed;
    top: 68px;
    left: 0;
    right: 0;
    background: rgba(250,248,245,0.97);
    backdrop-filter: blur(16px);
    flex-direction: column;
    padding: 20px;
    gap: 8px;
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
    z-index: 999;
  }
  .main-nav.open {
    display: flex;
  }
  .main-nav a {
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    width: 100%;
    text-align: center;
  }
  .hamburger {
    display: flex;
  }
  .hero-section {
    height: 70vh;
  }
  .hero-title {
    font-size: 1.8rem;
  }
  .gallery-grid {
    grid-template-columns: 1fr 1fr;
  }
  .gallery-item.large {
    grid-column: span 2;
    aspect-ratio: 16/9;
  }
  .footer-top {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
  .section {
    padding: 56px 0;
  }
  .video-grid {
    grid-template-columns: 1fr;
  }
  .story-grid {
    grid-template-columns: 1fr;
  }
  .creators-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .reviews-grid {
    grid-template-columns: 1fr;
  }
}
@media (max-width: 480px) {
  .header-inner {
    padding: 0 16px;
  }
  .btn-download {
    display: none;
  }
  .hero-actions {
    flex-direction: column;
    align-items: center;
  }
  .gallery-grid {
    grid-template-columns: 1fr;
  }
  .gallery-item.large {
    grid-column: span 1;
    aspect-ratio: 16/9;
  }
  .creators-grid {
    grid-template-columns: 1fr 1fr;
  }
}

/* ---- 打印 ---- */
@media print {
  .site-header, .search-bar-wrapper, .hero-section, .site-footer { display: none; }
}