/* ============================================
   每日大赛 - 影视传媒与视频社区网站
   原创视觉体系：深海青 + 珊瑚橙
   设计理念：灯塔指引方向，视频连接社区
   ============================================ */

:root {
  --color-primary: #0d3b3b;
  --color-primary-light: #1a5e5e;
  --color-accent: #ff6b4a;
  --color-accent-light: #ff8a6a;
  --color-bg: #f7f5f0;
  --color-bg-dark: #0a2e2e;
  --color-text: #2a2a2a;
  --color-text-light: #666;
  --color-white: #ffffff;
  --color-border: #e0ddd5;
  --color-card: #ffffff;
  --color-overlay: rgba(13, 59, 59, 0.85);
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.1);
  --shadow-lg: 0 8px 40px rgba(0,0,0,0.15);
  --radius: 8px;
  --radius-lg: 16px;
  --transition: 0.3s 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", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

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-primary);
  box-shadow: var(--shadow-md);
}

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

.site-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--color-white);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: 2px;
}

.site-logo img { width: 36px; height: 36px; border-radius: 6px; }

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

.main-nav a {
  color: rgba(255,255,255,0.85);
  padding: 8px 14px;
  border-radius: 6px;
  font-size: 0.9rem;
  transition: all var(--transition);
  white-space: nowrap;
}

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

/* === Search Bar === */
.search-bar {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 10px 20px;
  background: var(--color-primary-light);
}

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

.search-form input {
  flex: 1;
  padding: 10px 16px;
  border: none;
  border-radius: 6px 0 0 6px;
  font-size: 0.9rem;
  background: var(--color-white);
  outline: none;
}

.search-form button {
  padding: 10px 24px;
  background: var(--color-accent);
  color: var(--color-white);
  border: none;
  border-radius: 0 6px 6px 0;
  cursor: pointer;
  font-size: 0.9rem;
  transition: background var(--transition);
}

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

/* === Hero Section === */
.hero {
  position: relative;
  min-height: 420px;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-bg-dark) 100%);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0.35;
}

.hero-content {
  position: relative;
  z-index: 2;
  padding: 60px 20px;
  max-width: var(--max-width);
  margin: 0 auto;
}

.hero h1 {
  color: var(--color-white);
  font-size: 2.8rem;
  font-weight: 800;
  margin-bottom: 16px;
  line-height: 1.3;
}

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

.hero p {
  color: rgba(255,255,255,0.8);
  font-size: 1.1rem;
  max-width: 600px;
  margin-bottom: 24px;
}

.hero-stats {
  display: flex;
  gap: 40px;
  margin-top: 30px;
}

.hero-stat { text-align: left; }
.hero-stat .num { color: var(--color-accent); font-size: 2rem; font-weight: 800; }
.hero-stat .label { color: rgba(255,255,255,0.7); font-size: 0.85rem; }

/* === Section === */
.section { padding: 60px 0; }
.section-alt { background: var(--color-white); }

.section-title {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 8px;
  position: relative;
  padding-left: 16px;
}

.section-title::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 24px;
  background: var(--color-accent);
  border-radius: 2px;
}

.section-subtitle {
  color: var(--color-text-light);
  font-size: 0.95rem;
  margin-bottom: 30px;
  padding-left: 16px;
}

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

.video-card {
  background: var(--color-card);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  cursor: pointer;
}

.video-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.video-thumb {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--color-bg-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(255, 107, 74, 0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--transition);
  backdrop-filter: blur(4px);
}

.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(0,0,0,0.7);
  color: var(--color-white);
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.75rem;
}

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

.video-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 8px;
  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 span { display: flex; align-items: center; gap: 4px; }

.video-tags {
  display: flex;
  gap: 6px;
  margin-top: 8px;
  flex-wrap: wrap;
}

.video-tag {
  font-size: 0.72rem;
  padding: 2px 8px;
  background: rgba(13, 59, 59, 0.08);
  color: var(--color-primary);
  border-radius: 4px;
}

/* === Feature Modules === */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.feature-card {
  background: var(--color-card);
  border-radius: var(--radius-lg);
  padding: 30px;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  border: 1px solid var(--color-border);
}

.feature-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-accent);
}

.feature-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.feature-icon svg { width: 24px; height: 24px; fill: var(--color-accent); }

.feature-card h3 {
  font-size: 1.15rem;
  color: var(--color-primary);
  margin-bottom: 10px;
}

.feature-card p {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

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

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

.expert-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }

.expert-avatar {
  width: 100%;
  aspect-ratio: 1/1;
  object-fit: cover;
  border-bottom: 3px solid var(--color-accent);
}

.expert-body { padding: 20px; }

.expert-name {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 4px;
}

.expert-role { font-size: 0.85rem; color: var(--color-accent); margin-bottom: 10px; }

.expert-desc { font-size: 0.82rem; color: var(--color-text-light); margin-bottom: 12px; }

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

.expert-btn {
  padding: 6px 16px;
  font-size: 0.8rem;
  border-radius: 6px;
  transition: all var(--transition);
}

.expert-btn.primary { background: var(--color-accent); color: var(--color-white); }
.expert-btn.primary:hover { background: var(--color-accent-light); }
.expert-btn.secondary { border: 1px solid var(--color-border); color: var(--color-primary); }
.expert-btn.secondary:hover { border-color: var(--color-accent); color: var(--color-accent); }

/* === Community Section === */
.community-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
}

.community-item {
  background: var(--color-card);
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
  border: 1px solid var(--color-border);
  transition: all var(--transition);
}

.community-item:hover { border-color: var(--color-accent); transform: translateY(-2px); }

.community-item .icon {
  width: 40px;
  height: 40px;
  margin: 0 auto 12px;
  background: rgba(255, 107, 74, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.community-item h4 { color: var(--color-primary); font-size: 1rem; margin-bottom: 6px; }
.community-item p { font-size: 0.82rem; color: var(--color-text-light); }

/* === Partner Wall === */
.partner-wall {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 16px;
}

.partner-logo {
  aspect-ratio: 2/1;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  color: var(--color-text-light);
  transition: all var(--transition);
}

.partner-logo:hover { border-color: var(--color-accent); color: var(--color-accent); }

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

.faq-item {
  background: var(--color-card);
  border-radius: var(--radius);
  margin-bottom: 12px;
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.faq-question {
  padding: 16px 20px;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
  color: var(--color-primary);
  font-size: 0.95rem;
  transition: background var(--transition);
}

.faq-question:hover { background: rgba(13, 59, 59, 0.03); }

.faq-question .toggle {
  width: 24px;
  height: 24px;
  background: var(--color-accent);
  color: var(--color-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
  transition: transform var(--transition);
}

.faq-item.open .faq-question .toggle { transform: rotate(45deg); }

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
  padding: 0 20px;
}

.faq-item.open .faq-answer { max-height: 300px; padding-bottom: 16px; }

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

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

.review-card {
  background: var(--color-card);
  border-radius: var(--radius);
  padding: 24px;
  border: 1px solid var(--color-border);
  transition: all var(--transition);
}

.review-card:hover { box-shadow: var(--shadow-md); }

.review-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.review-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  font-weight: 700;
  font-size: 0.9rem;
}

.review-name { font-weight: 600; font-size: 0.9rem; color: var(--color-primary); }
.review-date { font-size: 0.75rem; color: var(--color-text-light); }

.review-stars { color: var(--color-accent); font-size: 0.85rem; margin-bottom: 8px; }

.review-text { font-size: 0.85rem; color: var(--color-text-light); line-height: 1.7; }

/* === Contact Section === */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}

.contact-info-card {
  background: var(--color-card);
  border-radius: var(--radius-lg);
  padding: 30px;
  box-shadow: var(--shadow-sm);
}

.contact-info-card h3 { color: var(--color-primary); margin-bottom: 16px; font-size: 1.2rem; }

.contact-item {
  display: flex;
  gap: 12px;
  margin-bottom: 14px;
  font-size: 0.9rem;
}

.contact-item .label { color: var(--color-text-light); min-width: 80px; }
.contact-item .value { color: var(--color-text); font-weight: 500; }

.qr-section {
  display: flex;
  gap: 30px;
  justify-content: center;
  margin-top: 20px;
}

.qr-item { text-align: center; }
.qr-item img { width: 120px; height: 120px; border-radius: 8px; margin-bottom: 8px; }
.qr-item p { font-size: 0.82rem; color: var(--color-text-light); }

/* === Share Buttons === */
.share-buttons {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: center;
}

.share-btn {
  padding: 8px 20px;
  border-radius: 6px;
  font-size: 0.85rem;
  color: var(--color-white);
  cursor: pointer;
  transition: all var(--transition);
  border: none;
}

.share-btn:hover { transform: translateY(-2px); box-shadow: var(--shadow-sm); }
.share-btn.wechat { background: #07c160; }
.share-btn.weibo { background: #e6162d; }
.share-btn.douyin { background: #000; }
.share-btn.bilibili { background: #fb7299; }

/* === Footer === */
.site-footer {
  background: var(--color-bg-dark);
  color: rgba(255,255,255,0.7);
  padding: 40px 0 20px;
  margin-top: 40px;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 30px;
  margin-bottom: 30px;
}

.footer-col h4 {
  color: var(--color-white);
  font-size: 1rem;
  margin-bottom: 14px;
}

.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 8px; }
.footer-col a { color: rgba(255,255,255,0.6); font-size: 0.85rem; }
.footer-col a:hover { color: var(--color-accent); }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 20px;
  text-align: center;
  font-size: 0.82rem;
  color: rgba(255,255,255,0.5);
}

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

.footer-logo img { width: 32px; height: 32px; border-radius: 6px; }
.footer-logo span { color: var(--color-white); font-size: 1.2rem; font-weight: 700; }

/* === Breadcrumb === */
.breadcrumb {
  padding: 16px 0;
  font-size: 0.85rem;
  color: var(--color-text-light);
}

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

/* === Page Hero === */
.page-hero {
  position: relative;
  min-height: 280px;
  display: flex;
  align-items: center;
  background: var(--color-primary);
  overflow: hidden;
}

.page-hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0.3;
}

.page-hero-content {
  position: relative;
  z-index: 2;
  padding: 40px 20px;
  max-width: var(--max-width);
  margin: 0 auto;
}

.page-hero h1 {
  color: var(--color-white);
  font-size: 2.2rem;
  font-weight: 800;
  margin-bottom: 10px;
}

.page-hero p {
  color: rgba(255,255,255,0.8);
  font-size: 1rem;
  max-width: 600px;
}

/* === Article Content === */
.article-content {
  max-width: 800px;
  margin: 0 auto;
  padding: 30px 0;
}

.article-content h2 {
  color: var(--color-primary);
  font-size: 1.4rem;
  margin: 24px 0 12px;
  padding-left: 12px;
  border-left: 4px solid var(--color-accent);
}

.article-content h3 {
  color: var(--color-primary);
  font-size: 1.15rem;
  margin: 20px 0 10px;
}

.article-content p {
  margin-bottom: 16px;
  font-size: 0.95rem;
  line-height: 1.9;
  color: var(--color-text);
}

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

.article-content blockquote {
  border-left: 4px solid var(--color-accent);
  padding: 12px 20px;
  margin: 16px 0;
  background: rgba(13, 59, 59, 0.04);
  border-radius: 0 var(--radius) var(--radius) 0;
  font-size: 0.9rem;
  color: var(--color-text-light);
}

/* === Comment Section === */
.comment-section {
  max-width: 800px;
  margin: 40px auto;
}

.comment-section h3 {
  color: var(--color-primary);
  font-size: 1.2rem;
  margin-bottom: 20px;
}

.comment-item {
  background: var(--color-card);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 12px;
  border: 1px solid var(--color-border);
}

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

.comment-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  font-weight: 700;
  font-size: 0.8rem;
}

.comment-name { font-weight: 600; font-size: 0.88rem; color: var(--color-primary); }
.comment-date { font-size: 0.75rem; color: var(--color-text-light); }

.comment-text { font-size: 0.88rem; color: var(--color-text); margin-bottom: 10px; }

.comment-reply {
  background: rgba(13, 59, 59, 0.04);
  border-radius: var(--radius);
  padding: 12px 16px;
  margin-top: 10px;
  border-left: 3px solid var(--color-primary-light);
}

.comment-reply .reply-name { font-size: 0.82rem; font-weight: 600; color: var(--color-primary); }
.comment-reply .reply-text { font-size: 0.82rem; color: var(--color-text-light); margin-top: 4px; }

/* === How-To Guide === */
.howto-steps {
  display: grid;
  gap: 20px;
}

.howto-step {
  display: flex;
  gap: 20px;
  background: var(--color-card);
  padding: 24px;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
}

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

.step-content h4 { color: var(--color-primary); margin-bottom: 6px; font-size: 1rem; }
.step-content p { font-size: 0.88rem; color: var(--color-text-light); }

/* === Responsive === */
@media (max-width: 768px) {
  .header-inner { flex-direction: column; gap: 10px; }
  .main-nav { justify-content: center; gap: 2px; }
  .main-nav a { padding: 6px 10px; font-size: 0.82rem; }
  .hero h1 { font-size: 1.8rem; }
  .hero p { font-size: 0.95rem; }
  .hero-stats { gap: 20px; }
  .hero-stat .num { font-size: 1.4rem; }
  .section { padding: 40px 0; }
  .section-title { font-size: 1.4rem; }
  .video-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .qr-section { flex-direction: column; align-items: center; gap: 20px; }
  .page-hero h1 { font-size: 1.6rem; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .howto-step { flex-direction: column; gap: 12px; }
}

@media (max-width: 480px) {
  .main-nav a { padding: 4px 8px; font-size: 0.78rem; }
  .hero { min-height: 320px; }
  .hero h1 { font-size: 1.5rem; }
  .footer-grid { grid-template-columns: 1fr; }
  .review-grid { grid-template-columns: 1fr; }
  .expert-grid { grid-template-columns: 1fr 1fr; }
}

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

/* === JSON-LD hidden === */
.jsonld-block { display: none; }