/* ============================================
   糖心vlog 全站样式表
   品牌：糖心vlog | 域名：nwbpxa.cn
   影视传媒公司 + 视频社区
   ============================================ */

/* CSS Variables */
:root {
  --primary: #FF6B9D;
  --primary-dark: #C44569;
  --accent: #F8B500;
  --dark-bg: #1A1A2E;
  --dark-secondary: #16213E;
  --light-text: #EAEAEA;
  --body-text: #333333;
  --light-bg: #F5F5F8;
  --card-bg: #FFFFFF;
  --border-color: #E8E8EC;
  --shadow: 0 4px 20px rgba(0,0,0,0.08);
  --shadow-hover: 0 8px 30px rgba(255,107,157,0.15);
  --radius: 12px;
  --transition: all 0.3s ease;
}

/* Reset & Base */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--body-text);
  background: var(--light-bg);
  line-height: 1.7;
  overflow-x: hidden;
}
a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary-dark); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.3; color: var(--dark-bg); }

/* Container */
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.section { padding: 70px 0; }
.section-title {
  text-align: center;
  margin-bottom: 50px;
}
.section-title h2 {
  font-size: 2rem;
  margin-bottom: 12px;
  position: relative;
  display: inline-block;
}
.section-title h2::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  border-radius: 2px;
}
.section-title p {
  color: #888;
  font-size: 1rem;
  margin-top: 16px;
}

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(26,26,46,0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255,255,255,0.05);
  transition: var(--transition);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
}
.logo img {
  height: 40px;
  width: auto;
}
.logo span {
  font-size: 1.3rem;
  font-weight: 700;
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Navigation */
.main-nav { display: flex; align-items: center; gap: 6px; }
.main-nav a {
  color: var(--light-text);
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 0.9rem;
  transition: var(--transition);
  white-space: nowrap;
}
.main-nav a:hover, .main-nav a.active {
  background: rgba(255,107,157,0.15);
  color: var(--primary);
}
.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 5px;
}
.mobile-toggle span {
  width: 24px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: var(--transition);
}

/* Search Bar */
.search-bar {
  background: var(--dark-secondary);
  padding: 12px 0;
  border-bottom: 1px solid rgba(255,255,255,0.05);
  margin-top: 68px;
}
.search-bar .container {
  display: flex;
  align-items: center;
  justify-content: center;
}
.search-box {
  display: flex;
  align-items: center;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 25px;
  overflow: hidden;
  width: 100%;
  max-width: 560px;
  transition: var(--transition);
}
.search-box:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(255,107,157,0.15);
}
.search-box input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: #fff;
  padding: 10px 20px;
  font-size: 0.9rem;
}
.search-box input::placeholder { color: rgba(255,255,255,0.4); }
.search-box button {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border: none;
  color: #fff;
  padding: 10px 24px;
  cursor: pointer;
  font-size: 0.9rem;
  transition: var(--transition);
}
.search-box button:hover { opacity: 0.85; }

/* Breadcrumb */
.breadcrumb {
  padding: 15px 0;
  font-size: 0.85rem;
  color: #999;
}
.breadcrumb a { color: var(--primary); }
.breadcrumb span { margin: 0 6px; }

/* Hero Banner */
.hero-banner {
  position: relative;
  height: 520px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--dark-bg);
}
.hero-banner .bg-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.6;
}
.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  color: #fff;
  max-width: 800px;
  padding: 0 20px;
}
.hero-content h1 {
  font-size: 2.8rem;
  color: #fff;
  margin-bottom: 16px;
  text-shadow: 0 2px 20px rgba(0,0,0,0.3);
}
.hero-content h1 em {
  font-style: normal;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-content p {
  font-size: 1.15rem;
  opacity: 0.9;
  margin-bottom: 28px;
  line-height: 1.8;
}
.hero-btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 25px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: none;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  box-shadow: 0 4px 15px rgba(255,107,157,0.3);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255,107,157,0.4);
  color: #fff;
}
.btn-outline {
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255,255,255,0.4);
}
.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(255,107,157,0.1);
}

/* Video Card Grid */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}
.video-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
  cursor: pointer;
}
.video-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
}
.video-thumb {
  position: relative;
  padding-top: 56.25%;
  overflow: hidden;
  background: var(--dark-bg);
}
.video-thumb img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.video-card:hover .video-thumb img { transform: scale(1.05); }
.play-btn {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.8);
  width: 56px;
  height: 56px;
  background: rgba(255,107,157,0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: var(--transition);
  z-index: 2;
}
.play-btn::after {
  content: '';
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 10px 0 10px 18px;
  border-color: transparent transparent transparent #fff;
  margin-left: 3px;
}
.video-card:hover .play-btn {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}
.video-duration {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: rgba(0,0,0,0.75);
  color: #fff;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.75rem;
  z-index: 2;
}
.video-info {
  padding: 16px;
}
.video-info h3 {
  font-size: 1rem;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.video-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.8rem;
  color: #999;
  flex-wrap: wrap;
}
.video-meta .views::before { content: '▶ '; }
.video-meta .likes::before { content: '♥ '; }
.video-meta .comments::before { content: '💬 '; }
.video-tags {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-top: 10px;
}
.video-tags .tag {
  background: var(--light-bg);
  color: var(--primary);
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 0.75rem;
  border: 1px solid var(--border-color);
}

/* Feature Cards */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}
.feature-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 30px 24px;
  text-align: center;
  box-shadow: var(--shadow);
  transition: var(--transition);
  border: 1px solid var(--border-color);
}
.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--primary);
}
.feature-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 18px;
  background: linear-gradient(135deg, rgba(255,107,157,0.1), rgba(248,181,0,0.1));
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
}
.feature-card h3 {
  font-size: 1.1rem;
  margin-bottom: 10px;
}
.feature-card p {
  font-size: 0.9rem;
  color: #777;
  line-height: 1.6;
}

/* Expert Cards */
.expert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}
.expert-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
  text-align: center;
}
.expert-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.expert-avatar {
  width: 100%;
  height: 260px;
  overflow: hidden;
}
.expert-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.expert-card:hover .expert-avatar img { transform: scale(1.05); }
.expert-info {
  padding: 20px;
}
.expert-info h3 { font-size: 1.1rem; margin-bottom: 4px; }
.expert-info .title {
  color: var(--primary);
  font-size: 0.85rem;
  margin-bottom: 10px;
}
.expert-info p {
  font-size: 0.85rem;
  color: #777;
  line-height: 1.6;
}
.expert-btns {
  display: flex;
  gap: 10px;
  justify-content: center;
  margin-top: 14px;
}
.expert-btns .btn { padding: 8px 18px; font-size: 0.8rem; }

/* FAQ Section */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  background: var(--card-bg);
  border-radius: var(--radius);
  margin-bottom: 12px;
  box-shadow: var(--shadow);
  overflow: hidden;
  border: 1px solid var(--border-color);
}
.faq-question {
  padding: 18px 24px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-weight: 600;
  font-size: 0.95rem;
  transition: var(--transition);
}
.faq-question:hover { color: var(--primary); }
.faq-question::after {
  content: '+';
  font-size: 1.3rem;
  color: var(--primary);
  transition: var(--transition);
  flex-shrink: 0;
  margin-left: 12px;
}
.faq-item.active .faq-question::after { content: '−'; }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}
.faq-answer-inner {
  padding: 0 24px 18px;
  font-size: 0.9rem;
  color: #666;
  line-height: 1.8;
}

/* Reviews */
.review-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}
.review-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border-color);
  transition: var(--transition);
}
.review-card:hover { box-shadow: var(--shadow-hover); }
.review-stars {
  color: var(--accent);
  font-size: 0.9rem;
  margin-bottom: 12px;
}
.review-text {
  font-size: 0.9rem;
  color: #555;
  line-height: 1.7;
  margin-bottom: 14px;
  font-style: italic;
}
.review-author {
  display: flex;
  align-items: center;
  gap: 10px;
}
.review-author-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: 0.9rem;
}
.review-author-name { font-weight: 600; font-size: 0.85rem; }
.review-author-date { font-size: 0.75rem; color: #999; }

/* Brand Wall */
.brand-wall {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 30px;
  align-items: center;
}
.brand-wall-item {
  width: 140px;
  height: 70px;
  background: var(--card-bg);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow);
  padding: 10px;
  transition: var(--transition);
  border: 1px solid var(--border-color);
  font-weight: 700;
  color: #999;
  font-size: 0.85rem;
}
.brand-wall-item:hover {
  box-shadow: var(--shadow-hover);
  border-color: var(--primary);
  color: var(--primary);
}

/* Social Share */
.share-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.share-bar span { font-size: 0.9rem; color: #777; font-weight: 600; }
.share-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  font-size: 0.85rem;
  color: #fff;
  transition: var(--transition);
  cursor: pointer;
}
.share-btn:hover { transform: scale(1.1); color: #fff; }
.share-wechat { background: #07C160; }
.share-weibo { background: #E6162D; }
.share-douyin { background: #161823; }
.share-bilibili { background: #00A1D6; }

/* Footer */
.site-footer {
  background: var(--dark-bg);
  color: var(--light-text);
  padding: 50px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 40px;
  margin-bottom: 40px;
}
.footer-col h4 {
  color: #fff;
  font-size: 1rem;
  margin-bottom: 18px;
  position: relative;
  padding-bottom: 10px;
}
.footer-col h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 30px;
  height: 2px;
  background: var(--primary);
}
.footer-col p, .footer-col a {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.6);
  line-height: 2;
}
.footer-col a:hover { color: var(--primary); }
.footer-qr {
  display: flex;
  gap: 16px;
}
.footer-qr img {
  width: 100px;
  height: 100px;
  border-radius: 8px;
  border: 2px solid rgba(255,255,255,0.1);
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 20px 0;
  text-align: center;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.4);
}
.footer-bottom a { color: var(--primary); }

/* Page Header */
.page-header {
  background: linear-gradient(135deg, var(--dark-bg), var(--dark-secondary));
  padding: 100px 0 50px;
  text-align: center;
  color: #fff;
}
.page-header h1 {
  font-size: 2.2rem;
  color: #fff;
  margin-bottom: 10px;
}
.page-header p {
  color: rgba(255,255,255,0.7);
  font-size: 1rem;
}

/* Content Sections */
.content-block {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 30px;
  margin-bottom: 24px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border-color);
}
.content-block h2 {
  font-size: 1.4rem;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--light-bg);
}
.content-block p {
  font-size: 0.95rem;
  line-height: 1.8;
  margin-bottom: 14px;
  color: #555;
}

/* Contact Info */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 20px;
}
.contact-item {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
  box-shadow: var(--shadow);
  border: 1px solid var(--border-color);
}
.contact-item h4 {
  font-size: 1rem;
  margin-bottom: 8px;
  color: var(--primary);
}
.contact-item p {
  font-size: 0.9rem;
  color: #666;
}

/* How-To Guide */
.howto-steps {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 20px;
  counter-reset: step;
}
.howto-step {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
  box-shadow: var(--shadow);
  border: 1px solid var(--border-color);
  counter-increment: step;
  position: relative;
}
.howto-step::before {
  content: counter(step);
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  margin: 0 auto 14px;
}
.howto-step h4 { font-size: 1rem; margin-bottom: 8px; }
.howto-step p { font-size: 0.85rem; color: #777; }

/* Sidebar */
.page-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 30px;
  align-items: start;
}
.sidebar-widget {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 20px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border-color);
}
.sidebar-widget h4 {
  font-size: 1rem;
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--light-bg);
}
.sidebar-widget a {
  display: block;
  padding: 8px 0;
  font-size: 0.85rem;
  color: #555;
  border-bottom: 1px solid var(--light-bg);
}
.sidebar-widget a:hover { color: var(--primary); }
.sidebar-widget a:last-child { border-bottom: none; }

/* Lazy Load */
img[loading="lazy"] { opacity: 0; transition: opacity 0.3s; }
img[loading="lazy"].loaded, img[loading="lazy"][src] { opacity: 1; }

/* Scroll to Top */
.scroll-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: 999;
  box-shadow: 0 4px 12px rgba(255,107,157,0.3);
  font-size: 1.2rem;
  border: none;
}
.scroll-top.visible { opacity: 1; visibility: visible; }
.scroll-top:hover { transform: translateY(-3px); }

/* Responsive */
@media (max-width: 992px) {
  .page-layout { grid-template-columns: 1fr; }
  .hero-content h1 { font-size: 2rem; }
  .hero-banner { height: 420px; }
}
@media (max-width: 768px) {
  .main-nav {
    display: none;
    position: absolute;
    top: 68px;
    left: 0;
    width: 100%;
    background: var(--dark-bg);
    flex-direction: column;
    padding: 16px;
    gap: 4px;
    border-top: 1px solid rgba(255,255,255,0.05);
  }
  .main-nav.active { display: flex; }
  .mobile-toggle { display: flex; }
  .hero-content h1 { font-size: 1.6rem; }
  .hero-banner { height: 360px; }
  .section { padding: 50px 0; }
  .section-title h2 { font-size: 1.5rem; }
  .video-grid { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 480px) {
  .hero-content h1 { font-size: 1.3rem; }
  .hero-content p { font-size: 0.9rem; }
  .footer-grid { grid-template-columns: 1fr; }
  .video-grid { grid-template-columns: 1fr; }
}