/* ============================================
   偷拍 - 影视传媒与视频社区平台
   品牌色：深海青 #0A4D5C / 琥珀金 #E8B547
   原创设计 - 百度SEO优化
   ============================================ */

:root {
  --color-primary: #0A4D5C;
  --color-primary-light: #147089;
  --color-primary-dark: #063038;
  --color-accent: #E8B547;
  --color-accent-light: #F0C768;
  --color-accent-dark: #C99A30;
  --color-bg: #F7F9FA;
  --color-bg-alt: #EDF2F4;
  --color-text: #1A2A30;
  --color-text-light: #5A6A70;
  --color-white: #FFFFFF;
  --color-border: #D8E0E3;
  --color-shadow: rgba(10, 77, 92, 0.12);
  --color-shadow-hover: rgba(10, 77, 92, 0.22);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --transition: 0.25s cubic-bezier(0.23, 1, 0.32, 1);
  --max-width: 1200px;
}

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

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

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  overflow-x: hidden;
}

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

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

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

/* === HEADER === */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--color-white);
  box-shadow: 0 2px 12px var(--color-shadow);
}

.header-top {
  background: var(--color-primary-dark);
  color: var(--color-white);
  font-size: 0.8rem;
  padding: 6px 0;
  text-align: center;
}

.header-top span { margin: 0 12px; opacity: 0.85; }

.header-main {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px;
  max-width: var(--max-width);
  margin: 0 auto;
  gap: 20px;
}

.logo-wrap { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }

.logo-img { width: 42px; height: 42px; border-radius: var(--radius-sm); }

.logo-text {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-primary);
  letter-spacing: 2px;
}

.logo-text span { color: var(--color-accent); }

.main-nav { display: flex; gap: 4px; flex-wrap: wrap; }

.main-nav a {
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text);
  transition: all var(--transition);
}

.main-nav a:hover, .main-nav a.active {
  background: var(--color-primary);
  color: var(--color-white);
}

/* === SEARCH BAR === */
.search-bar {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 10px 20px;
  background: var(--color-bg-alt);
}

.search-form {
  display: flex;
  max-width: 600px;
  margin: 0 auto;
  gap: 0;
}

.search-form input {
  flex: 1;
  padding: 10px 16px;
  border: 2px solid var(--color-primary);
  border-right: none;
  border-radius: var(--radius-sm) 0 0 var(--radius-sm);
  font-size: 0.95rem;
  outline: none;
  background: var(--color-white);
}

.search-form button {
  padding: 10px 24px;
  background: var(--color-primary);
  color: var(--color-white);
  border: none;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  cursor: pointer;
  font-size: 0.95rem;
  font-weight: 600;
  transition: background var(--transition);
}

.search-form button:hover { background: var(--color-primary-light); }

/* === HERO === */
.hero {
  position: relative;
  height: 420px;
  overflow: hidden;
  display: flex;
  align-items: center;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  filter: brightness(0.55);
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(6,48,56,0.7) 0%, rgba(10,77,92,0.4) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
  width: 100%;
}

.hero h1 {
  font-size: 2.6rem;
  font-weight: 800;
  color: var(--color-white);
  margin-bottom: 16px;
  line-height: 1.3;
}

.hero h1 span { color: var(--color-accent); }

.hero p {
  font-size: 1.15rem;
  color: rgba(255,255,255,0.9);
  margin-bottom: 24px;
  max-width: 600px;
}

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

.btn {
  display: inline-block;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 1rem;
  transition: all var(--transition);
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--color-accent);
  color: var(--color-primary-dark);
}

.btn-primary:hover { background: var(--color-accent-light); transform: translateY(-2px); }

.btn-outline {
  background: transparent;
  color: var(--color-white);
  border: 2px solid var(--color-white);
}

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

/* === SECTIONS === */
.section { padding: 56px 0; }

.section-alt { background: var(--color-bg-alt); }

.section-title {
  text-align: center;
  margin-bottom: 40px;
}

.section-title h2 {
  font-size: 1.9rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.section-title h2 span { color: var(--color-accent); }

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

.section-title::after {
  content: '';
  display: block;
  width: 60px;
  height: 4px;
  background: var(--color-accent);
  margin: 12px auto 0;
  border-radius: 2px;
}

/* === VIDEO GRID === */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

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

.video-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 32px var(--color-shadow-hover);
}

.video-thumb {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--color-primary-dark);
}

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

.video-card:hover .video-thumb img { transform: scale(1.08); }

.video-play-btn {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0);
  width: 56px;
  height: 56px;
  background: rgba(232, 181, 71, 0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--transition);
  z-index: 2;
}

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

.video-play-btn::after {
  content: '';
  width: 0;
  height: 0;
  border-left: 18px solid var(--color-white);
  border-top: 12px solid transparent;
  border-bottom: 12px solid transparent;
  margin-left: 4px;
}

.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: 0.8rem;
  z-index: 2;
}

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

.video-info h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--color-text);
  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: 0.82rem;
  color: var(--color-text-light);
}

.video-meta span { display: flex; align-items: center; gap: 4px; }

.video-tag {
  display: inline-block;
  padding: 2px 8px;
  background: var(--color-bg-alt);
  color: var(--color-primary);
  border-radius: 4px;
  font-size: 0.78rem;
  margin-right: 6px;
  margin-bottom: 4px;
}

/* === MODULE CARDS === */
.module-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}

.module-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: 0 4px 16px var(--color-shadow);
  transition: all var(--transition);
  border-top: 4px solid var(--color-primary);
}

.module-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px var(--color-shadow-hover);
  border-top-color: var(--color-accent);
}

.module-card.accent { border-top-color: var(--color-accent); }

.module-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.module-card p {
  color: var(--color-text-light);
  font-size: 0.95rem;
  margin-bottom: 16px;
}

.module-card .tags { margin-top: 12px; }

/* === EXPERT CARDS === */
.expert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 24px;
}

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

.expert-card:hover { transform: translateY(-6px); box-shadow: 0 12px 32px var(--color-shadow-hover); }

.expert-avatar {
  width: 100%;
  aspect-ratio: 1/1;
  object-fit: cover;
}

.expert-body { padding: 18px; }

.expert-body h4 { font-size: 1.15rem; font-weight: 700; color: var(--color-primary); margin-bottom: 4px; }

.expert-role { color: var(--color-accent); font-size: 0.9rem; font-weight: 600; margin-bottom: 10px; }

.expert-desc { font-size: 0.85rem; color: var(--color-text-light); margin-bottom: 12px; line-height: 1.5; }

.expert-btns { display: flex; gap: 8px; justify-content: center; }

.expert-btns a {
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  font-weight: 600;
}

.expert-btns .btn-contact { background: var(--color-primary); color: var(--color-white); }
.expert-btns .btn-works { background: var(--color-bg-alt); color: var(--color-primary); }

/* === PARTNER LOGO WALL === */
.partner-wall {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  justify-content: center;
  align-items: center;
}

.partner-logo {
  width: 100px;
  height: 100px;
  border-radius: var(--radius-md);
  background: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px var(--color-shadow);
  transition: all var(--transition);
  padding: 16px;
}

.partner-logo:hover { transform: scale(1.08); box-shadow: 0 8px 24px var(--color-shadow-hover); }

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

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

.faq-q {
  padding: 16px 20px;
  font-weight: 600;
  color: var(--color-primary);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background var(--transition);
}

.faq-q:hover { background: var(--color-bg-alt); }

.faq-q::after { content: '+'; font-size: 1.4rem; color: var(--color-accent); transition: transform var(--transition); }

.faq-item.open .faq-q::after { transform: rotate(45deg); }

.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
  padding: 0 20px;
  color: var(--color-text-light);
}

.faq-item.open .faq-a { max-height: 300px; padding: 0 20px 16px; }

/* === REVIEWS === */
.review-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
}

.review-card {
  background: var(--color-white);
  border-radius: var(--radius-md);
  padding: 20px;
  box-shadow: 0 2px 12px var(--color-shadow);
  border-left: 4px solid var(--color-accent);
}

.review-card .stars { color: var(--color-accent); margin-bottom: 8px; font-size: 1rem; }

.review-card p { font-size: 0.92rem; color: var(--color-text); margin-bottom: 12px; line-height: 1.6; }

.review-card .reviewer { font-size: 0.85rem; color: var(--color-text-light); display: flex; align-items: center; gap: 8px; }

.review-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--color-primary);
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 600;
}

/* === CONTACT === */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: start;
}

.contact-info-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: 0 4px 16px var(--color-shadow);
}

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

.contact-info-card ul { list-style: none; }

.contact-info-card li {
  padding: 10px 0;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.95rem;
  display: flex;
  justify-content: space-between;
}

.contact-info-card li:last-child { border-bottom: none; }

.contact-info-card li strong { color: var(--color-primary); }

.qr-section {
  display: flex;
  gap: 24px;
  justify-content: center;
  margin-top: 20px;
}

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

.qr-item img { width: 140px; height: 140px; border-radius: var(--radius-sm); margin-bottom: 8px; }

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

/* === SOCIAL SHARE === */
.share-bar { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

.share-btn {
  padding: 8px 20px;
  border-radius: var(--radius-sm);
  color: var(--color-white);
  font-size: 0.9rem;
  font-weight: 600;
  transition: all var(--transition);
  cursor: pointer;
  border: none;
}

.share-btn:hover { transform: translateY(-2px); opacity: 0.9; }

.share-wechat { background: #07C160; }
.share-weibo { background: #E6162D; }
.share-douyin { background: #000000; }
.share-bilibili { background: #FB7299; }

/* === HOW-TO === */
.howto-steps { max-width: 800px; margin: 0 auto; }

.howto-step {
  display: flex;
  gap: 20px;
  margin-bottom: 24px;
  align-items: flex-start;
}

.step-num {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  background: var(--color-primary);
  color: var(--color-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.1rem;
}

.step-content h4 { color: var(--color-primary); font-size: 1.1rem; margin-bottom: 6px; }
.step-content p { color: var(--color-text-light); font-size: 0.92rem; }

/* === BREADCRUMB === */
.breadcrumb {
  padding: 12px 0;
  font-size: 0.85rem;
  color: var(--color-text-light);
}

.breadcrumb a { color: var(--color-text-light); }
.breadcrumb a:hover { color: var(--color-primary); }
.breadcrumb span { margin: 0 8px; }

/* === PAGE HEADER === */
.page-header {
  background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
  color: var(--color-white);
  padding: 48px 0;
  text-align: center;
}

.page-header h1 { font-size: 2.2rem; font-weight: 800; margin-bottom: 10px; }
.page-header h1 span { color: var(--color-accent); }
.page-header p { font-size: 1.05rem; opacity: 0.9; max-width: 700px; margin: 0 auto; }

/* === ARTICLE CONTENT === */
.article-content {
  max-width: 800px;
  margin: 0 auto;
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: 0 4px 16px var(--color-shadow);
}

.article-content h2 { color: var(--color-primary); font-size: 1.5rem; margin: 24px 0 12px; }
.article-content h3 { color: var(--color-primary-light); font-size: 1.2rem; margin: 20px 0 10px; }
.article-content p { margin-bottom: 16px; color: var(--color-text); line-height: 1.8; }
.article-content img { border-radius: var(--radius-md); margin: 20px 0; }

/* === COMMENT SECTION === */
.comment-section {
  max-width: 800px;
  margin: 32px auto 0;
}

.comment-section h3 { color: var(--color-primary); font-size: 1.3rem; margin-bottom: 20px; }

.comment-item {
  background: var(--color-white);
  border-radius: var(--radius-md);
  padding: 18px 20px;
  margin-bottom: 14px;
  box-shadow: 0 2px 8px var(--color-shadow);
}

.comment-header { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; }

.comment-name { font-weight: 600; color: var(--color-primary); font-size: 0.95rem; }
.comment-date { font-size: 0.8rem; color: var(--color-text-light); }

.comment-body { font-size: 0.92rem; color: var(--color-text); line-height: 1.6; }

.comment-reply {
  margin-top: 12px;
  margin-left: 42px;
  padding: 12px 16px;
  background: var(--color-bg-alt);
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  color: var(--color-text-light);
  border-left: 3px solid var(--color-accent);
}

.comment-reply strong { color: var(--color-primary); }

/* === STATS === */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  padding: 32px 0;
}

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

.stat-num { font-size: 2rem; font-weight: 800; color: var(--color-accent); }
.stat-label { font-size: 0.9rem; color: var(--color-text-light); margin-top: 4px; }

/* === FOOTER === */
.site-footer {
  background: var(--color-primary-dark);
  color: rgba(255,255,255,0.8);
  padding: 40px 0 20px;
  margin-top: 40px;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 32px;
  margin-bottom: 28px;
}

.footer-col h4 { color: var(--color-white); font-size: 1.05rem; margin-bottom: 14px; }

.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 8px; font-size: 0.88rem; }
.footer-col a { color: rgba(255,255,255,0.7); }
.footer-col a:hover { color: var(--color-accent); }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.15);
  padding-top: 20px;
  text-align: center;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.6);
}

.footer-bottom p { margin-bottom: 6px; }

.footer-logo { width: 48px; height: 48px; border-radius: var(--radius-sm); margin-bottom: 12px; }

/* === RESPONSIVE === */
@media (max-width: 768px) {
  .header-main { flex-direction: column; gap: 12px; }
  .main-nav { justify-content: center; gap: 2px; }
  .main-nav a { padding: 6px 10px; font-size: 0.85rem; }
  .hero { height: 320px; }
  .hero h1 { font-size: 1.8rem; }
  .hero p { font-size: 1rem; }
  .section { padding: 36px 0; }
  .section-title h2 { font-size: 1.5rem; }
  .video-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .stats-bar { grid-template-columns: repeat(2, 1fr); }
  .article-content { padding: 20px; }
  .qr-section { flex-direction: column; align-items: center; }
  .page-header h1 { font-size: 1.6rem; }
}

@media (max-width: 480px) {
  .main-nav a { padding: 5px 8px; font-size: 0.8rem; }
  .hero h1 { font-size: 1.5rem; }
  .hero-btns { flex-direction: column; }
  .btn { width: 100%; text-align: center; }
}

/* === LAZY LOAD === */
img[data-src] { opacity: 0; transition: opacity 0.4s; }
img.loaded { opacity: 1; }

/* === UTILITY === */
.text-center { text-align: center; }
.mt-20 { margin-top: 20px; }
.mt-40 { margin-top: 40px; }
.mb-20 { margin-bottom: 20px; }
.hidden { display: none; }