/* 今日大赛 - 主样式文件 */
/* 原创设计 | bwsoxgcj.cn */

/* ===== CSS变量 ===== */
:root {
  --primary: #e8527a;
  --primary-dark: #c93d63;
  --primary-light: #f7a8be;
  --secondary: #7c3aed;
  --secondary-light: #a78bfa;
  --accent: #f59e0b;
  --bg-dark: #0f0a1a;
  --bg-card: #1a1028;
  --bg-card2: #221535;
  --text-main: #f0e6ff;
  --text-muted: #9d8cb5;
  --text-white: #ffffff;
  --border-color: #3d2a5a;
  --gradient-main: linear-gradient(135deg, #e8527a 0%, #7c3aed 100%);
  --gradient-card: linear-gradient(145deg, #1a1028 0%, #221535 100%);
  --shadow-card: 0 8px 32px rgba(232,82,122,0.15);
  --shadow-hover: 0 16px 48px rgba(232,82,122,0.3);
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== 重置与基础 ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', '微软雅黑', sans-serif;
  background-color: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.7;
  overflow-x: hidden;
}

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

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

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

ul, ol {
  list-style: none;
}

/* ===== 通用工具类 ===== */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 20px;
}

.section-title {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 12px;
  position: relative;
}

.section-title span {
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-subtitle {
  color: var(--text-muted);
  font-size: 1rem;
  margin-bottom: 40px;
}

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 32px;
  flex-wrap: wrap;
  gap: 16px;
}

.section-header .section-title {
  margin-bottom: 0;
}

.view-more {
  color: var(--primary);
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 6px;
  border: 1px solid var(--primary);
  padding: 6px 16px;
  border-radius: 20px;
  transition: var(--transition);
  white-space: nowrap;
}

.view-more:hover {
  background: var(--primary);
  color: white;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 30px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  text-decoration: none;
}

.btn-primary {
  background: var(--gradient-main);
  color: white;
  box-shadow: 0 4px 20px rgba(232,82,122,0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(232,82,122,0.5);
  color: white;
}

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

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

.btn-sm {
  padding: 8px 18px;
  font-size: 0.85rem;
}

.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
}

.badge-hot {
  background: linear-gradient(135deg, #ff4757, #ff6b81);
  color: white;
}

.badge-new {
  background: linear-gradient(135deg, #2ed573, #1e90ff);
  color: white;
}

.badge-ai {
  background: linear-gradient(135deg, #7c3aed, #a78bfa);
  color: white;
}

/* ===== 顶部公告栏 ===== */
.top-bar {
  background: var(--gradient-main);
  padding: 8px 0;
  text-align: center;
  font-size: 0.85rem;
  color: white;
  position: relative;
  overflow: hidden;
}

.top-bar::before {
  content: '';
  position: absolute;
  top: 0; left: -100%;
  width: 300%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
  animation: shimmer 3s infinite;
}

@keyframes shimmer {
  0% { left: -100%; }
  100% { left: 100%; }
}

.top-bar a {
  color: white;
  font-weight: 600;
  text-decoration: underline;
}

/* ===== 导航栏 ===== */
.navbar {
  background: rgba(15, 10, 26, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 1000;
  transition: var(--transition);
}

.navbar.scrolled {
  box-shadow: 0 4px 30px rgba(0,0,0,0.5);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  max-width: 1280px;
  margin: 0 auto;
  gap: 20px;
}

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

.nav-logo img.logo-img {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  object-fit: cover;
}

.nav-logo .logo-text {
  font-size: 1.3rem;
  font-weight: 800;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  white-space: nowrap;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
  justify-content: center;
}

.nav-menu a {
  color: var(--text-main);
  font-size: 0.9rem;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  white-space: nowrap;
  position: relative;
}

.nav-menu a:hover,
.nav-menu a.active {
  color: var(--primary);
  background: rgba(232,82,122,0.1);
}

.nav-menu a.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.nav-btn-join {
  background: var(--gradient-main);
  color: white !important;
  padding: 8px 20px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
  white-space: nowrap;
}

.nav-btn-join:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 15px rgba(232,82,122,0.4);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 5px;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-main);
  border-radius: 2px;
  transition: var(--transition);
}

/* ===== 搜索框 ===== */
.search-bar-wrap {
  background: rgba(26, 16, 40, 0.9);
  border-bottom: 1px solid var(--border-color);
  padding: 12px 20px;
}

.search-bar-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 12px;
}

.search-form {
  display: flex;
  align-items: center;
  flex: 1;
  max-width: 600px;
  background: var(--bg-card2);
  border: 1px solid var(--border-color);
  border-radius: 30px;
  overflow: hidden;
  transition: var(--transition);
}

.search-form:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(232,82,122,0.15);
}

.search-form input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  padding: 10px 20px;
  color: var(--text-main);
  font-size: 0.9rem;
}

.search-form input::placeholder {
  color: var(--text-muted);
}

.search-form button {
  background: var(--gradient-main);
  border: none;
  color: white;
  padding: 10px 22px;
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 600;
  transition: var(--transition);
}

.search-form button:hover {
  opacity: 0.9;
}

.search-hot-tags {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.search-hot-tags span {
  color: var(--text-muted);
  font-size: 0.8rem;
}

.search-hot-tags a {
  font-size: 0.8rem;
  color: var(--text-muted);
  padding: 3px 10px;
  border-radius: 12px;
  border: 1px solid var(--border-color);
  transition: var(--transition);
}

.search-hot-tags a:hover {
  color: var(--primary);
  border-color: var(--primary);
}

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

.breadcrumb a {
  color: var(--text-muted);
}

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

.breadcrumb span {
  margin: 0 8px;
}

/* ===== Hero 横幅 ===== */
.hero {
  position: relative;
  min-height: 580px;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
}

.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(15,10,26,0.85) 0%, rgba(124,58,237,0.4) 60%, rgba(232,82,122,0.3) 100%);
}

.hero-content {
  position: relative;
  z-index: 1;
  padding: 80px 20px;
  max-width: 1280px;
  margin: 0 auto;
  width: 100%;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(232,82,122,0.2);
  border: 1px solid rgba(232,82,122,0.4);
  color: var(--primary-light);
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 0.85rem;
  margin-bottom: 20px;
}

.hero-badge .dot {
  width: 8px;
  height: 8px;
  background: var(--primary);
  border-radius: 50%;
  animation: pulse 1.5s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  color: white;
  line-height: 1.2;
  margin-bottom: 20px;
}

.hero h1 span {
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.8);
  max-width: 600px;
  margin-bottom: 36px;
  line-height: 1.8;
}

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

.hero-stats {
  display: flex;
  gap: 40px;
  margin-top: 48px;
  flex-wrap: wrap;
}

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

.hero-stat .num {
  font-size: 1.8rem;
  font-weight: 800;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-stat .label {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ===== 视频卡片 ===== */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}

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

.video-grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.video-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-color);
  transition: var(--transition);
  cursor: pointer;
}

.video-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
  border-color: var(--primary);
}

.video-thumb {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--bg-card2);
}

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

.video-card:hover .video-thumb img {
  transform: scale(1.05);
}

.video-play-btn {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.3);
  opacity: 0;
  transition: var(--transition);
}

.video-card:hover .video-play-btn {
  opacity: 1;
}

.video-play-btn .play-icon {
  width: 56px;
  height: 56px;
  background: rgba(232,82,122,0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transform: scale(0.8);
  transition: var(--transition);
}

.video-card:hover .play-icon {
  transform: scale(1);
}

.play-icon::after {
  content: '';
  border-style: solid;
  border-width: 10px 0 10px 18px;
  border-color: transparent transparent transparent white;
  margin-left: 4px;
}

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

.video-badge {
  position: absolute;
  top: 8px;
  left: 8px;
}

.video-info {
  padding: 14px;
}

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

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

.video-author {
  display: flex;
  align-items: center;
  gap: 6px;
}

.video-author img {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  object-fit: cover;
}

.video-stats {
  display: flex;
  gap: 12px;
}

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

/* ===== 分区 ===== */
.section {
  padding: 60px 0;
}

.section-dark {
  background: var(--bg-card);
}

.section-gradient {
  background: linear-gradient(180deg, var(--bg-dark) 0%, rgba(124,58,237,0.05) 50%, var(--bg-dark) 100%);
}

/* ===== 分类标签 ===== */
.category-tabs {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}

.cat-tab {
  padding: 8px 20px;
  border-radius: 20px;
  font-size: 0.9rem;
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--transition);
  background: transparent;
}

.cat-tab:hover,
.cat-tab.active {
  background: var(--gradient-main);
  color: white;
  border-color: transparent;
}

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

.expert-card {
  background: var(--gradient-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 28px 20px;
  text-align: center;
  transition: var(--transition);
}

.expert-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
  border-color: var(--primary);
}

.expert-avatar {
  width: 90px;
  height: 90px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 16px;
  border: 3px solid var(--primary);
}

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

.expert-title {
  font-size: 0.85rem;
  color: var(--primary-light);
  margin-bottom: 12px;
}

.expert-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 16px;
  line-height: 1.6;
}

.expert-tags {
  display: flex;
  gap: 6px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.expert-tag {
  font-size: 0.75rem;
  padding: 3px 10px;
  border-radius: 12px;
  background: rgba(124,58,237,0.2);
  color: var(--secondary-light);
  border: 1px solid rgba(124,58,237,0.3);
}

.expert-actions {
  display: flex;
  gap: 10px;
  justify-content: center;
}

/* ===== 合作品牌 ===== */
.partner-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 16px;
}

.partner-item {
  background: var(--bg-card2);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 80px;
  transition: var(--transition);
}

.partner-item:hover {
  border-color: var(--primary);
  transform: translateY(-3px);
}

.partner-item span {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-muted);
  text-align: center;
}

/* ===== AI功能区 ===== */
.ai-features {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}

.ai-card {
  background: var(--gradient-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.ai-card::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -50%;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(124,58,237,0.15) 0%, transparent 70%);
  pointer-events: none;
}

.ai-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
  border-color: var(--secondary);
}

.ai-icon {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, var(--secondary), var(--secondary-light));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 16px;
}

.ai-card h4 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 10px;
}

.ai-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ===== 社区功能 ===== */
.community-features {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
}

.comm-feature {
  background: var(--bg-card2);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px 20px;
  text-align: center;
  transition: var(--transition);
}

.comm-feature:hover {
  border-color: var(--primary);
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
}

.comm-icon {
  font-size: 2rem;
  margin-bottom: 12px;
}

.comm-feature h4 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-white);
  margin-bottom: 8px;
}

.comm-feature p {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.5;
}

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

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

.review-card:hover {
  border-color: var(--primary);
  transform: translateY(-4px);
}

.review-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.review-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--gradient-main);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  font-weight: 700;
  color: white;
  flex-shrink: 0;
}

.review-user-info .name {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-white);
}

.review-user-info .date {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.review-stars {
  color: var(--accent);
  font-size: 0.9rem;
  margin-bottom: 10px;
}

.review-text {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.7;
}

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

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

.faq-item.active {
  border-color: var(--primary);
}

.faq-question {
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  background: var(--bg-card);
  transition: var(--transition);
}

.faq-question:hover {
  background: var(--bg-card2);
}

.faq-question h4 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-white);
  flex: 1;
  padding-right: 16px;
}

.faq-arrow {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: rgba(232,82,122,0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 0.8rem;
  transition: var(--transition);
  flex-shrink: 0;
}

.faq-item.active .faq-arrow {
  transform: rotate(180deg);
  background: var(--primary);
  color: white;
}

.faq-answer {
  padding: 0 24px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  background: var(--bg-card2);
}

.faq-item.active .faq-answer {
  max-height: 300px;
  padding: 16px 24px;
}

.faq-answer p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ===== 联系信息 ===== */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
}

.contact-card {
  background: var(--gradient-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 28px;
  transition: var(--transition);
}

.contact-card:hover {
  border-color: var(--primary);
  transform: translateY(-4px);
}

.contact-icon {
  font-size: 2rem;
  margin-bottom: 14px;
}

.contact-card h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 10px;
}

.contact-card p, .contact-card a {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ===== How-To 指南 ===== */
.howto-steps {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 20px;
}

.step-card {
  text-align: center;
  padding: 28px 20px;
  position: relative;
}

.step-num {
  width: 48px;
  height: 48px;
  background: var(--gradient-main);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  font-weight: 800;
  color: white;
  margin: 0 auto 16px;
}

.step-card h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 10px;
}

.step-card p {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ===== 底部页脚 ===== */
.footer {
  background: #080512;
  border-top: 1px solid var(--border-color);
  padding: 60px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 48px;
}

.footer-brand .logo-text {
  font-size: 1.4rem;
  font-weight: 800;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 14px;
  display: block;
}

.footer-brand p {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 20px;
}

.footer-qrcodes {
  display: flex;
  gap: 16px;
}

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

.qr-item img {
  width: 80px;
  height: 80px;
  border-radius: 8px;
  border: 2px solid var(--border-color);
  margin-bottom: 6px;
}

.qr-item span {
  font-size: 0.75rem;
  color: var(--text-muted);
  display: block;
}

.footer-col h5 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 16px;
}

.footer-col ul li {
  margin-bottom: 10px;
}

.footer-col ul li a {
  font-size: 0.88rem;
  color: var(--text-muted);
  transition: var(--transition);
}

.footer-col ul li a:hover {
  color: var(--primary);
  padding-left: 4px;
}

.footer-social {
  display: flex;
  gap: 10px;
  margin-top: 16px;
}

.social-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--bg-card2);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  color: var(--text-muted);
  transition: var(--transition);
}

.social-btn:hover {
  background: var(--gradient-main);
  border-color: transparent;
  color: white;
  transform: translateY(-3px);
}

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.footer-bottom a {
  color: var(--text-muted);
}

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

.footer-links {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

/* ===== 分享按钮 ===== */
.share-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  padding: 16px 0;
}

.share-bar span {
  font-size: 0.88rem;
  color: var(--text-muted);
}

.share-btn {
  padding: 6px 16px;
  border-radius: 16px;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  color: white;
}

.share-wechat { background: #07c160; }
.share-weibo { background: #e6162d; }
.share-douyin { background: #000; }
.share-bilibili { background: #00a1d6; }

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

/* ===== 视频播放器页面 ===== */
.video-player-wrap {
  background: #000;
  border-radius: var(--radius-md);
  overflow: hidden;
  aspect-ratio: 16/9;
  margin-bottom: 20px;
}

.video-player-wrap video,
.video-player-wrap iframe {
  width: 100%;
  height: 100%;
}

/* ===== 页面内容区 ===== */
.page-content {
  padding: 40px 0;
}

.page-hero {
  background: linear-gradient(135deg, var(--bg-card) 0%, var(--bg-card2) 100%);
  border-bottom: 1px solid var(--border-color);
  padding: 48px 0;
  margin-bottom: 40px;
}

.page-hero h1 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
  color: var(--text-white);
  margin-bottom: 12px;
}

.page-hero p {
  font-size: 1rem;
  color: var(--text-muted);
  max-width: 600px;
}

/* ===== 侧边栏 ===== */
.layout-with-sidebar {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 32px;
}

.sidebar-widget {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px;
  margin-bottom: 20px;
}

.sidebar-widget h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-color);
}

.hot-list li {
  padding: 10px 0;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  gap: 10px;
  align-items: flex-start;
}

.hot-list li:last-child {
  border-bottom: none;
}

.hot-num {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--primary);
  flex-shrink: 0;
  width: 20px;
}

.hot-list a {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.4;
}

.hot-list a:hover {
  color: var(--primary);
}

/* ===== 分页 ===== */
.pagination {
  display: flex;
  gap: 8px;
  justify-content: center;
  margin-top: 40px;
  flex-wrap: wrap;
}

.page-btn {
  width: 38px;
  height: 38px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  background: var(--bg-card);
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
}

.page-btn:hover,
.page-btn.active {
  background: var(--gradient-main);
  border-color: transparent;
  color: white;
}

/* ===== 滚动进度条 ===== */
.progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: var(--gradient-main);
  z-index: 9999;
  transition: width 0.1s;
}

/* ===== 回到顶部 ===== */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 44px;
  height: 44px;
  background: var(--gradient-main);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.1rem;
  cursor: pointer;
  opacity: 0;
  transform: translateY(20px);
  transition: var(--transition);
  z-index: 999;
  border: none;
  box-shadow: 0 4px 20px rgba(232,82,122,0.4);
}

.back-to-top.visible {
  opacity: 1;
  transform: translateY(0);
}

.back-to-top:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(232,82,122,0.5);
}

/* ===== 加载动画 ===== */
.skeleton {
  background: linear-gradient(90deg, var(--bg-card) 25%, var(--bg-card2) 50%, var(--bg-card) 75%);
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s infinite;
  border-radius: var(--radius-sm);
}

@keyframes skeleton-loading {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .video-grid-4 {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  
  .layout-with-sidebar {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(15, 10, 26, 0.98);
    flex-direction: column;
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
    gap: 4px;
  }
  
  .nav-menu.open {
    display: flex;
  }
  
  .nav-menu a {
    padding: 12px 16px;
    border-radius: var(--radius-sm);
  }
  
  .hamburger {
    display: flex;
  }
  
  .navbar {
    position: relative;
  }
  
  .video-grid-4,
  .video-grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .hero {
    min-height: 400px;
  }
  
  .hero-stats {
    gap: 24px;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  
  .search-hot-tags {
    display: none;
  }
  
  .section {
    padding: 40px 0;
  }
  
  .expert-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .video-grid-4,
  .video-grid-3,
  .video-grid {
    grid-template-columns: 1fr;
  }
  
  .hero h1 {
    font-size: 1.8rem;
  }
  
  .expert-grid {
    grid-template-columns: 1fr;
  }
  
  .hero-actions {
    flex-direction: column;
  }
  
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

/* ===== 懒加载 ===== */
img[data-src] {
  opacity: 0;
  transition: opacity 0.3s;
}

img.loaded {
  opacity: 1;
}

/* ===== 特色横幅 ===== */
.feature-banner {
  background: linear-gradient(135deg, rgba(232,82,122,0.1) 0%, rgba(124,58,237,0.1) 100%);
  border: 1px solid rgba(232,82,122,0.2);
  border-radius: var(--radius-lg);
  padding: 48px;
  text-align: center;
  margin: 40px 0;
}

.feature-banner h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 800;
  color: var(--text-white);
  margin-bottom: 14px;
}

.feature-banner p {
  color: var(--text-muted);
  margin-bottom: 28px;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

/* ===== 图片展示网格 ===== */
.photo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px;
}

.photo-item {
  aspect-ratio: 3/4;
  border-radius: var(--radius-sm);
  overflow: hidden;
  position: relative;
  cursor: pointer;
}

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

.photo-item:hover img {
  transform: scale(1.08);
}

.photo-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.7) 0%, transparent 50%);
  opacity: 0;
  transition: var(--transition);
  display: flex;
  align-items: flex-end;
  padding: 12px;
}

.photo-item:hover .photo-overlay {
  opacity: 1;
}

.photo-overlay span {
  font-size: 0.82rem;
  color: white;
}

/* ===== 标签云 ===== */
.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag-cloud a {
  padding: 5px 14px;
  border-radius: 16px;
  font-size: 0.82rem;
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  transition: var(--transition);
}

.tag-cloud a:hover {
  background: var(--gradient-main);
  border-color: transparent;
  color: white;
}

/* ===== 通知提示 ===== */
.notice-bar {
  background: rgba(232,82,122,0.1);
  border: 1px solid rgba(232,82,122,0.2);
  border-radius: var(--radius-sm);
  padding: 12px 20px;
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 24px;
  font-size: 0.88rem;
  color: var(--primary-light);
}

/* ===== 关于页面 ===== */
@media (max-width: 768px) {
  .about-intro {
    grid-template-columns: 1fr !important;
  }
  .company-stats {
    grid-template-columns: repeat(2, 1fr) !important;
  }
  .business-grid {
    grid-template-columns: 1fr !important;
  }
  .coop-grid {
    grid-template-columns: 1fr !important;
  }
  .plan-grid {
    grid-template-columns: 1fr !important;
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr) !important;
  }
  .movie-featured {
    grid-template-columns: 1fr !important;
  }
}

/* ===== 视频播放器 ===== */
.video-player-wrap {
  width: 100%;
  aspect-ratio: 16/9;
  background: #000;
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: 20px;
  position: relative;
}

/* ===== 分享栏 ===== */
.share-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  padding: 16px 0;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.share-btn {
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.82rem;
  cursor: pointer;
  border: 1px solid var(--border-color);
  background: var(--bg-card2);
  color: var(--text-muted);
  transition: var(--transition);
}

.share-btn:hover {
  background: var(--gradient-main);
  border-color: transparent;
  color: white;
}

/* ===== 导航容器（新header结构）===== */
.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: nowrap;
}

.nav-link {
  color: var(--text-muted);
  font-size: 0.92rem;
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  white-space: nowrap;
}

.nav-link:hover,
.nav-link.active {
  color: var(--primary);
  background: rgba(232,82,122,0.08);
}

/* ===== 面包屑导航 ===== */
.breadcrumb-nav {
  background: rgba(26,16,40,0.8);
  border-bottom: 1px solid var(--border-color);
  padding: 8px 0;
  font-size: 0.82rem;
}

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 4px;
  list-style: none;
}

.breadcrumb-item a {
  color: var(--text-muted);
}

.breadcrumb-item a:hover {
  color: var(--primary);
}

.breadcrumb-item span {
  color: var(--primary-light);
}

.breadcrumb-sep {
  color: var(--border-color);
  font-size: 0.9rem;
}

/* ===== 首页视频精华区 ===== */
.section-video-featured {
  background: linear-gradient(180deg, var(--bg-dark) 0%, var(--bg-card) 100%);
}

.home-video-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 24px;
  align-items: start;
}

.home-video-main {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.home-video-player {
  width: 100%;
  aspect-ratio: 16/9;
  display: block;
  background: #000;
  max-height: 420px;
  object-fit: contain;
}

.home-video-caption {
  padding: 16px 20px;
}

.home-video-caption h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-white);
  margin-bottom: 6px;
}

.home-video-caption p {
  font-size: 0.82rem;
  color: var(--text-muted);
}

.home-video-list {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.home-video-list-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 8px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-color);
}

.hot-video-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 10px;
  border-radius: var(--radius-sm);
  background: var(--bg-card2);
  transition: var(--transition);
  cursor: pointer;
  color: inherit;
  text-decoration: none;
}

.hot-video-item:hover {
  background: rgba(232,82,122,0.1);
  border-color: var(--primary);
}

.hot-video-tag {
  font-size: 0.72rem;
  color: var(--primary);
  background: rgba(232,82,122,0.12);
  padding: 2px 8px;
  border-radius: 10px;
  width: fit-content;
}

.hot-video-title {
  font-size: 0.85rem;
  color: var(--text-main);
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.hot-video-views {
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* ===== 视频标签 ===== */
.video-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 8px;
}

.video-tags a {
  font-size: 0.72rem;
  color: var(--text-muted);
  background: rgba(124,58,237,0.1);
  border: 1px solid rgba(124,58,237,0.2);
  padding: 2px 8px;
  border-radius: 10px;
  transition: var(--transition);
}

.video-tags a:hover {
  background: var(--gradient-main);
  border-color: transparent;
  color: white;
}

/* ===== SEO文字区 ===== */
.seo-text-block {
  padding: 20px 0;
}

.seo-text-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
  margin-top: 32px;
}

.seo-text-grid h5 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-color);
}

.seo-text-grid p {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.8;
}

/* ===== 响应式补充 ===== */
@media (max-width: 1024px) {
  .home-video-layout {
    grid-template-columns: 1fr;
  }
  .home-video-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .nav-container {
    flex-wrap: wrap;
  }
  .nav-actions .search-form {
    display: none;
  }
  .home-video-layout {
    grid-template-columns: 1fr;
  }
  .home-video-list {
    grid-template-columns: 1fr;
  }
  .seo-text-grid {
    grid-template-columns: 1fr;
  }
  .breadcrumb-nav {
    display: none;
  }
}

@media (max-width: 480px) {
  .home-video-player {
    max-height: 220px;
  }
}