/* ========== 抖阴 - 动物写真与视频社区 全站样式 ========== */
/* 原创配色：琥珀金 #D4920B / 深炭灰 #1A1A2E / 暖象牙 #FFF8F0 / 森林绿 #2D5016 / 天际蓝 #1B6CA8 */

:root {
  --color-primary: #D4920B;
  --color-primary-dark: #A87208;
  --color-secondary: #1A1A2E;
  --color-accent: #2D5016;
  --color-sky: #1B6CA8;
  --color-bg: #FFF8F0;
  --color-bg-alt: #F5EDE0;
  --color-text: #2C2C2C;
  --color-text-light: #6B6B6B;
  --color-white: #FFFFFF;
  --color-border: #E8DDD0;
  --color-card-shadow: rgba(26,26,46,0.08);
  --font-main: 'PingFang SC','Hiragino Sans GB','Microsoft YaHei','WenQuanYi Micro Hei',sans-serif;
  --max-width: 1200px;
  --radius: 8px;
  --transition: all 0.3s ease;
}

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

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font-main);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.7;
  overflow-x: hidden;
}

a { color: var(--color-primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--color-primary-dark); }

img { max-width: 100%; height: auto; display: block; }

.container { max-width: var(--max-width); margin: 0 auto; padding: 0 20px; }

/* ========== 头部导航 ========== */
.site-header {
  background: var(--color-secondary);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 12px rgba(0,0,0,0.15);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.site-logo img {
  width: 42px;
  height: 42px;
  border-radius: 50%;
}

.site-logo span {
  color: var(--color-primary);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: 1px;
}

.main-nav { display: flex; align-items: center; gap: 0; }

.main-nav a {
  color: var(--color-white);
  padding: 22px 16px;
  font-size: 0.95rem;
  font-weight: 500;
  position: relative;
  transition: var(--transition);
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--color-primary);
  background: rgba(212,146,11,0.08);
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 3px;
  background: var(--color-primary);
  transition: var(--transition);
}

.main-nav a:hover::after,
.main-nav a.active::after { width: 60%; }

/* 搜索框 */
.search-bar {
  background: rgba(255,248,240,0.06);
  border-bottom: 1px solid var(--color-border);
  padding: 12px 0;
}

.search-bar .container { display: flex; justify-content: center; }

.search-box {
  display: flex;
  max-width: 580px;
  width: 100%;
  border-radius: 24px;
  overflow: hidden;
  box-shadow: 0 2px 8px var(--color-card-shadow);
}

.search-box input {
  flex: 1;
  border: 2px solid var(--color-primary);
  border-right: none;
  padding: 10px 20px;
  font-size: 0.95rem;
  outline: none;
  border-radius: 24px 0 0 24px;
  background: var(--color-white);
  color: var(--color-text);
}

.search-box button {
  background: var(--color-primary);
  color: var(--color-white);
  border: 2px solid var(--color-primary);
  padding: 10px 28px;
  font-size: 0.95rem;
  cursor: pointer;
  border-radius: 0 24px 24px 0;
  font-weight: 600;
  transition: var(--transition);
}

.search-box button:hover { background: var(--color-primary-dark); border-color: var(--color-primary-dark); }

/* 面包屑 */
.breadcrumb {
  padding: 14px 0;
  font-size: 0.85rem;
  color: var(--color-text-light);
  border-bottom: 1px solid var(--color-border);
}

.breadcrumb a { color: var(--color-primary); }
.breadcrumb span { margin: 0 6px; }

/* ========== Banner区域 ========== */
.hero-banner {
  position: relative;
  height: 520px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-banner img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 1;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(26,26,46,0.75) 0%, rgba(26,26,46,0.4) 100%);
  z-index: 2;
}

.hero-content {
  position: relative;
  z-index: 3;
  text-align: center;
  color: var(--color-white);
  max-width: 800px;
  padding: 0 20px;
}

.hero-content h1 {
  font-size: 2.8rem;
  font-weight: 800;
  margin-bottom: 16px;
  text-shadow: 0 2px 8px rgba(0,0,0,0.3);
  line-height: 1.3;
}

.hero-content h1 em {
  color: var(--color-primary);
  font-style: normal;
}

.hero-content p {
  font-size: 1.15rem;
  line-height: 1.8;
  opacity: 0.92;
  margin-bottom: 28px;
}

.hero-btn {
  display: inline-block;
  background: var(--color-primary);
  color: var(--color-white);
  padding: 14px 36px;
  border-radius: 30px;
  font-size: 1.05rem;
  font-weight: 600;
  transition: var(--transition);
  box-shadow: 0 4px 16px rgba(212,146,11,0.35);
}

.hero-btn:hover {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
  color: var(--color-white);
}

/* ========== 通用模块标题 ========== */
.section-title {
  text-align: center;
  margin-bottom: 40px;
}

.section-title h2 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-secondary);
  margin-bottom: 10px;
}

.section-title p {
  color: var(--color-text-light);
  font-size: 1rem;
}

.section-title .line {
  width: 60px;
  height: 4px;
  background: var(--color-primary);
  margin: 12px auto 0;
  border-radius: 2px;
}

/* ========== 视频卡片网格 ========== */
.section-block { padding: 60px 0; }
.section-block.alt-bg { background: var(--color-bg-alt); }

.video-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.video-card {
  background: var(--color-white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 4px 16px var(--color-card-shadow);
  transition: var(--transition);
  cursor: pointer;
}

.video-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 8px 28px rgba(26,26,46,0.15);
}

.video-thumb {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16/9;
}

.video-thumb img,
.video-thumb video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.video-card:hover .video-thumb img,
.video-card:hover .video-thumb video { transform: scale(1.06); }

.play-btn {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0);
  width: 56px;
  height: 56px;
  background: rgba(212,146,11,0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  box-shadow: 0 4px 16px rgba(0,0,0,0.3);
}

.play-btn::after {
  content: '';
  display: block;
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 10px 0 10px 18px;
  border-color: transparent transparent transparent var(--color-white);
  margin-left: 3px;
}

.video-card:hover .play-btn { transform: translate(-50%, -50%) scale(1); }

.video-duration {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: rgba(0,0,0,0.75);
  color: var(--color-white);
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.75rem;
}

.video-info { padding: 14px 16px; }

.video-info h3 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-secondary);
  margin-bottom: 8px;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.video-meta {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--color-text-light);
}

.video-meta .views::before { content: '▶ '; color: var(--color-primary); }
.video-meta .likes::before { content: '♥ '; color: #E74C3C; }

/* 标签 */
.tag-list { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; }

.tag {
  display: inline-block;
  background: rgba(212,146,11,0.1);
  color: var(--color-primary-dark);
  padding: 3px 12px;
  border-radius: 14px;
  font-size: 0.78rem;
  border: 1px solid rgba(212,146,11,0.2);
}

/* ========== 专家展示 ========== */
.expert-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.expert-card {
  background: var(--color-white);
  border-radius: var(--radius);
  overflow: hidden;
  text-align: center;
  box-shadow: 0 4px 16px var(--color-card-shadow);
  transition: var(--transition);
  padding-bottom: 20px;
}

.expert-card:hover { transform: translateY(-4px); }

.expert-card img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
}

.expert-card h4 {
  font-size: 1.05rem;
  margin: 14px 0 4px;
  color: var(--color-secondary);
}

.expert-card .role {
  color: var(--color-primary);
  font-size: 0.85rem;
  font-weight: 500;
}

.expert-card p {
  font-size: 0.85rem;
  color: var(--color-text-light);
  padding: 8px 16px 0;
  line-height: 1.6;
}

.expert-btn {
  display: inline-block;
  margin-top: 12px;
  padding: 7px 20px;
  background: var(--color-primary);
  color: var(--color-white);
  border-radius: 20px;
  font-size: 0.85rem;
  transition: var(--transition);
}

.expert-btn:hover { background: var(--color-primary-dark); color: var(--color-white); }

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

.faq-item {
  background: var(--color-white);
  border-radius: var(--radius);
  margin-bottom: 12px;
  box-shadow: 0 2px 8px var(--color-card-shadow);
  overflow: hidden;
}

.faq-question {
  padding: 18px 24px;
  font-weight: 600;
  color: var(--color-secondary);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: var(--transition);
}

.faq-question:hover { color: var(--color-primary); }

.faq-question::after {
  content: '+';
  font-size: 1.4rem;
  color: var(--color-primary);
  transition: var(--transition);
  flex-shrink: 0;
  margin-left: 16px;
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}

.faq-answer-inner {
  padding: 0 24px 18px;
  color: var(--color-text-light);
  line-height: 1.8;
  font-size: 0.92rem;
}

/* ========== 用户评论 ========== */
.review-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.review-card {
  background: var(--color-white);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: 0 4px 16px var(--color-card-shadow);
  border-left: 4px solid var(--color-primary);
}

.review-card .stars { color: var(--color-primary); margin-bottom: 10px; font-size: 1.1rem; }

.review-card blockquote {
  font-size: 0.92rem;
  color: var(--color-text);
  line-height: 1.8;
  margin-bottom: 12px;
  font-style: italic;
}

.review-card .reviewer {
  font-size: 0.85rem;
  color: var(--color-text-light);
  font-weight: 600;
}

/* ========== 社区模块 ========== */
.community-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.community-card {
  background: var(--color-white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 4px 16px var(--color-card-shadow);
  transition: var(--transition);
}

.community-card:hover { transform: translateY(-4px); }

.community-card img {
  width: 100%;
  aspect-ratio: 16/10;
  object-fit: cover;
}

.community-card .card-body { padding: 18px; }

.community-card h3 {
  font-size: 1.05rem;
  color: var(--color-secondary);
  margin-bottom: 8px;
}

.community-card p {
  font-size: 0.88rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* ========== AI赋能 ========== */
.ai-features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.ai-card {
  background: linear-gradient(135deg, var(--color-secondary) 0%, #16213E 100%);
  border-radius: var(--radius);
  padding: 32px 24px;
  color: var(--color-white);
  text-align: center;
  transition: var(--transition);
}

.ai-card:hover { transform: translateY(-4px); }

.ai-icon {
  width: 64px;
  height: 64px;
  background: rgba(212,146,11,0.15);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  font-size: 1.8rem;
}

.ai-card h3 {
  font-size: 1.1rem;
  margin-bottom: 10px;
  color: var(--color-primary);
}

.ai-card p {
  font-size: 0.88rem;
  opacity: 0.85;
  line-height: 1.7;
}

/* ========== 联系我们 ========== */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
  align-items: start;
}

.contact-info { line-height: 2.2; }

.contact-info h3 {
  font-size: 1.3rem;
  color: var(--color-secondary);
  margin-bottom: 16px;
}

.contact-info p { font-size: 0.95rem; color: var(--color-text); }

.qr-codes {
  display: flex;
  gap: 24px;
  justify-content: center;
}

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

.qr-item img {
  width: 160px;
  height: 160px;
  border-radius: var(--radius);
  box-shadow: 0 4px 12px var(--color-card-shadow);
}

.qr-item p {
  margin-top: 8px;
  font-size: 0.85rem;
  color: var(--color-text-light);
}

/* ========== 社交分享 ========== */
.share-bar {
  display: flex;
  gap: 12px;
  justify-content: center;
  padding: 20px 0;
}

.share-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  border-radius: 20px;
  font-size: 0.85rem;
  color: var(--color-white);
  transition: var(--transition);
}

.share-btn:hover { opacity: 0.85; transform: translateY(-2px); color: var(--color-white); }
.share-btn.wechat { background: #07C160; }
.share-btn.weibo { background: #E6162D; }
.share-btn.douyin { background: #161823; }
.share-btn.bilibili { background: #00A1D6; }

/* ========== How-To指南 ========== */
.howto-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  counter-reset: step;
}

.howto-step {
  background: var(--color-white);
  border-radius: var(--radius);
  padding: 28px 20px;
  text-align: center;
  box-shadow: 0 4px 16px var(--color-card-shadow);
  position: relative;
  counter-increment: step;
}

.howto-step::before {
  content: counter(step);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: var(--color-primary);
  color: var(--color-white);
  border-radius: 50%;
  font-size: 1.2rem;
  font-weight: 700;
  margin: 0 auto 14px;
}

.howto-step h4 {
  font-size: 1rem;
  color: var(--color-secondary);
  margin-bottom: 8px;
}

.howto-step p {
  font-size: 0.85rem;
  color: var(--color-text-light);
  line-height: 1.6;
}

/* ========== 页脚 ========== */
.site-footer {
  background: var(--color-secondary);
  color: rgba(255,255,255,0.7);
  padding: 48px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 32px;
  padding-bottom: 32px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-col h4 {
  color: var(--color-primary);
  font-size: 1.05rem;
  margin-bottom: 16px;
}

.footer-col p, .footer-col a {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.6);
  line-height: 2;
  display: block;
}

.footer-col a:hover { color: var(--color-primary); }

.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}

.footer-logo img { width: 36px; height: 36px; border-radius: 50%; }
.footer-logo span { color: var(--color-primary); font-size: 1.3rem; font-weight: 700; }

.footer-bottom {
  text-align: center;
  padding: 20px 0;
  font-size: 0.82rem;
  color: rgba(255,255,255,0.45);
}

/* ========== 内页通用 ========== */
.page-hero {
  background: linear-gradient(135deg, var(--color-secondary) 0%, #16213E 100%);
  padding: 60px 0;
  text-align: center;
  color: var(--color-white);
}

.page-hero h1 {
  font-size: 2.2rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.page-hero p {
  font-size: 1rem;
  opacity: 0.8;
}

.page-content { padding: 50px 0; }

.content-article {
  max-width: 900px;
  margin: 0 auto;
  line-height: 1.9;
  font-size: 1rem;
}

.content-article h2 {
  font-size: 1.6rem;
  color: var(--color-secondary);
  margin: 32px 0 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-primary);
  display: inline-block;
}

.content-article h3 {
  font-size: 1.25rem;
  color: var(--color-secondary);
  margin: 24px 0 12px;
}

.content-article p { margin-bottom: 16px; color: var(--color-text); }

.content-article img {
  border-radius: var(--radius);
  margin: 20px 0;
  box-shadow: 0 4px 16px var(--color-card-shadow);
}

/* ========== 合作品牌墙 ========== */
.brand-wall {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  justify-content: center;
  align-items: center;
}

.brand-wall-item {
  width: 140px;
  height: 80px;
  background: var(--color-white);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 8px var(--color-card-shadow);
  font-weight: 600;
  color: var(--color-text-light);
  font-size: 0.9rem;
}

/* ========== 移动端汉堡菜单 ========== */
.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
}

.mobile-toggle span {
  display: block;
  width: 26px;
  height: 3px;
  background: var(--color-white);
  border-radius: 2px;
  transition: var(--transition);
}

/* ========== 响应式 ========== */
@media (max-width: 1024px) {
  .video-grid { grid-template-columns: repeat(3, 1fr); }
  .expert-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .howto-steps { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .mobile-toggle { display: flex; }

  .main-nav {
    display: none;
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    background: var(--color-secondary);
    flex-direction: column;
    padding: 10px 0;
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
  }

  .main-nav.open { display: flex; }

  .main-nav a { padding: 14px 24px; border-bottom: 1px solid rgba(255,255,255,0.05); }

  .hero-banner { height: 380px; }
  .hero-content h1 { font-size: 1.8rem; }
  .hero-content p { font-size: 0.95rem; }

  .video-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .expert-grid { grid-template-columns: repeat(2, 1fr); }
  .community-grid { grid-template-columns: 1fr; }
  .ai-features { grid-template-columns: 1fr; }
  .review-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .howto-steps { grid-template-columns: 1fr; }

  .section-title h2 { font-size: 1.5rem; }
  .section-block { padding: 40px 0; }
}

@media (max-width: 480px) {
  .video-grid { grid-template-columns: 1fr; }
  .expert-grid { grid-template-columns: 1fr; }
  .qr-codes { flex-direction: column; align-items: center; }
  .share-bar { flex-wrap: wrap; }
}

/* ========== 懒加载 ========== */
img[loading="lazy"] { transition: opacity 0.3s ease; }

/* ========== 发布时间 ========== */
.publish-date {
  display: block;
  font-size: 0.78rem;
  color: var(--color-text-light);
  margin-bottom: 6px;
}

/* ========== 专家资质 ========== */
.expert-credentials {
  font-size: 0.78rem;
  color: var(--color-primary-dark);
  padding: 4px 16px 0;
  font-weight: 500;
}

/* ========== 干扰标签隐藏 ========== */
.dz-noise { display: none !important; visibility: hidden !important; height: 0 !important; overflow: hidden !important; position: absolute !important; left: -9999px !important; }