/* ============================================
   星空体育 - 167795.cn 主样式文件
   原创设计，版权所有 © 2026 星空体育
   ============================================ */

/* CSS变量 - 原创配色方案 */
:root {
  --primary: #1a7c3e;
  --primary-dark: #145f30;
  --primary-light: #2da05a;
  --accent: #f5a623;
  --accent-dark: #e0921a;
  --danger: #e74c3c;
  --dark: #0d1117;
  --dark-2: #161b22;
  --dark-3: #21262d;
  --text-primary: #e6edf3;
  --text-secondary: #8b949e;
  --text-muted: #6e7681;
  --border: #30363d;
  --card-bg: #161b22;
  --white: #ffffff;
  --shadow: 0 4px 20px rgba(0,0,0,0.4);
  --radius: 10px;
  --radius-sm: 6px;
  --transition: all 0.3s ease;
}

/* 全局重置 */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: 'Microsoft YaHei', '微软雅黑', 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
  background-color: var(--dark);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
}

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

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

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

ul, ol {
  list-style: none;
}

/* ============================================
   顶部公告栏
   ============================================ */
.top-bar {
  background: linear-gradient(90deg, var(--primary-dark), var(--dark-2));
  padding: 6px 0;
  font-size: 13px;
  border-bottom: 1px solid var(--border);
}

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

.top-bar-left {
  display: flex;
  align-items: center;
  gap: 16px;
  color: var(--text-secondary);
}

.top-bar-left .live-dot {
  width: 8px;
  height: 8px;
  background: var(--danger);
  border-radius: 50%;
  display: inline-block;
  animation: pulse 1.5s infinite;
}

.top-bar-right {
  display: flex;
  gap: 16px;
  color: var(--text-secondary);
}

.top-bar-right a {
  color: var(--text-secondary);
  font-size: 12px;
}

.top-bar-right a:hover {
  color: var(--accent);
}

/* ============================================
   导航栏
   ============================================ */
.site-header {
  background: var(--dark-2);
  border-bottom: 2px solid var(--primary);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 20px rgba(0,0,0,0.5);
}

.header-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.site-logo img {
  height: 50px;
  width: auto;
}

.site-logo-text {
  display: flex;
  flex-direction: column;
}

.site-logo-text .brand-name {
  font-size: 20px;
  font-weight: 700;
  color: var(--primary-light);
  line-height: 1.2;
}

.site-logo-text .brand-sub {
  font-size: 11px;
  color: var(--text-muted);
}

/* 主导航 */
.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.main-nav a {
  color: var(--text-secondary);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  transition: var(--transition);
  white-space: nowrap;
}

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

.main-nav a.nav-live {
  color: var(--danger);
  border: 1px solid var(--danger);
  padding: 6px 12px;
}

.main-nav a.nav-live:hover {
  background: var(--danger);
  color: var(--white);
}

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

.menu-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  transition: var(--transition);
  border-radius: 2px;
}

/* ============================================
   搜索框
   ============================================ */
.search-bar-section {
  background: var(--dark-3);
  border-bottom: 1px solid var(--border);
  padding: 12px 0;
}

.search-bar-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.search-form {
  display: flex;
  flex: 1;
  max-width: 600px;
  background: var(--dark-2);
  border: 1px solid var(--border);
  border-radius: 24px;
  overflow: hidden;
  transition: var(--transition);
}

.search-form:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(26,124,62,0.2);
}

.search-form input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  padding: 10px 18px;
  color: var(--text-primary);
  font-size: 14px;
  font-family: inherit;
}

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

.search-form button {
  background: var(--primary);
  border: none;
  color: var(--white);
  padding: 10px 20px;
  cursor: pointer;
  font-size: 14px;
  transition: var(--transition);
  font-family: inherit;
}

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

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

.search-hot-tags span {
  font-size: 12px;
  color: var(--text-muted);
}

.search-hot-tags a {
  font-size: 12px;
  color: var(--text-secondary);
  background: var(--dark-2);
  padding: 3px 10px;
  border-radius: 12px;
  border: 1px solid var(--border);
}

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

/* ============================================
   面包屑
   ============================================ */
.breadcrumb {
  background: var(--dark-2);
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
}

.breadcrumb-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
}

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

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

.breadcrumb-inner .sep {
  color: var(--border);
}

.breadcrumb-inner .current {
  color: var(--text-secondary);
}

/* ============================================
   Hero 横幅
   ============================================ */
.hero-section {
  position: relative;
  height: 520px;
  overflow: hidden;
  background: var(--dark);
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  filter: brightness(0.45);
  transition: transform 0.5s ease;
}

.hero-section:hover .hero-bg {
  transform: scale(1.02);
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(26,124,62,0.6) 0%, rgba(13,17,23,0.8) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 20px;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(231,76,60,0.9);
  color: var(--white);
  padding: 5px 14px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 16px;
  width: fit-content;
}

.hero-badge .dot {
  width: 7px;
  height: 7px;
  background: var(--white);
  border-radius: 50%;
  animation: pulse 1.2s infinite;
}

.hero-title {
  font-size: 48px;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 16px;
  text-shadow: 0 2px 10px rgba(0,0,0,0.5);
}

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

.hero-desc {
  font-size: 18px;
  color: rgba(255,255,255,0.85);
  max-width: 600px;
  margin-bottom: 28px;
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.btn-primary {
  background: var(--primary);
  color: var(--white);
  padding: 13px 28px;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.btn-primary:hover {
  background: var(--primary-dark);
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(26,124,62,0.4);
}

.btn-secondary {
  background: transparent;
  color: var(--white);
  padding: 12px 26px;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 600;
  border: 2px solid rgba(255,255,255,0.5);
  cursor: pointer;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

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

.hero-stats {
  position: absolute;
  bottom: 30px;
  right: 40px;
  display: flex;
  gap: 30px;
}

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

.hero-stat .num {
  font-size: 28px;
  font-weight: 800;
  color: var(--accent);
  display: block;
}

.hero-stat .label {
  font-size: 12px;
  color: rgba(255,255,255,0.7);
}

/* ============================================
   通用容器与布局
   ============================================ */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 20px;
}

.section {
  padding: 60px 0;
}

.section-sm {
  padding: 40px 0;
}

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 30px;
}

.section-title {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 10px;
}

.section-title::before {
  content: '';
  width: 4px;
  height: 24px;
  background: var(--primary);
  border-radius: 2px;
  display: block;
}

.section-more {
  font-size: 13px;
  color: var(--text-muted);
  border: 1px solid var(--border);
  padding: 6px 14px;
  border-radius: 20px;
}

.section-more:hover {
  border-color: var(--primary);
  color: var(--primary-light);
}

/* 分隔线 */
.divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 40px 0;
}

/* ============================================
   视频卡片
   ============================================ */
.video-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

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

.video-grid-2 {
  grid-template-columns: repeat(2, 1fr);
}

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

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

.video-thumb {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--dark-3);
}

.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;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0);
  transition: var(--transition);
  opacity: 0;
}

.video-card:hover .video-play-btn {
  opacity: 1;
  background: rgba(0,0,0,0.4);
}

.play-icon {
  width: 56px;
  height: 56px;
  background: rgba(26,124,62,0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.2s ease;
}

.play-icon:hover {
  transform: scale(1.1);
}

.play-icon svg {
  width: 24px;
  height: 24px;
  fill: white;
  margin-left: 4px;
}

.video-duration {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: rgba(0,0,0,0.8);
  color: var(--white);
  font-size: 11px;
  padding: 2px 6px;
  border-radius: 3px;
}

.video-live-badge {
  position: absolute;
  top: 8px;
  left: 8px;
  background: var(--danger);
  color: var(--white);
  font-size: 11px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 3px;
  display: flex;
  align-items: center;
  gap: 4px;
}

.video-live-badge .dot {
  width: 5px;
  height: 5px;
  background: white;
  border-radius: 50%;
  animation: pulse 1s infinite;
}

.video-info {
  padding: 14px;
}

.video-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.4;
  margin-bottom: 8px;
  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: 12px;
  color: var(--text-muted);
}

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

.video-stats span {
  display: flex;
  align-items: center;
  gap: 3px;
}

.video-category {
  background: var(--primary);
  color: var(--white);
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 3px;
}

/* 大视频卡片 */
.video-card-lg {
  grid-column: span 2;
}

.video-card-lg .video-thumb {
  aspect-ratio: 16/9;
}

/* ============================================
   直播卡片
   ============================================ */
.live-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.live-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: var(--transition);
  position: relative;
}

.live-card:hover {
  border-color: var(--danger);
  box-shadow: 0 4px 20px rgba(231,76,60,0.2);
  transform: translateY(-3px);
}

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

.live-card-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.live-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, transparent 40%, rgba(0,0,0,0.8));
}

.live-card-info {
  padding: 14px;
}

.live-card-title {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 6px;
}

.live-card-meta {
  font-size: 12px;
  color: var(--text-muted);
  display: flex;
  justify-content: space-between;
}

.live-viewers {
  color: var(--danger);
  font-weight: 600;
}

/* ============================================
   比分卡片
   ============================================ */
.score-section {
  background: var(--dark-2);
}

.score-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.score-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  transition: var(--transition);
}

.score-card:hover {
  border-color: var(--primary);
}

.score-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
  font-size: 12px;
  color: var(--text-muted);
}

.score-status {
  background: var(--danger);
  color: white;
  padding: 2px 8px;
  border-radius: 3px;
  font-size: 11px;
  font-weight: 700;
}

.score-status.finished {
  background: var(--text-muted);
}

.score-body {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.score-team {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  flex: 1;
}

.score-team-name {
  font-size: 13px;
  font-weight: 600;
  text-align: center;
}

.score-result {
  font-size: 28px;
  font-weight: 800;
  color: var(--accent);
  min-width: 80px;
  text-align: center;
}

.score-time {
  font-size: 12px;
  color: var(--danger);
  font-weight: 600;
}

/* ============================================
   专家展示
   ============================================ */
.expert-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.expert-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 16px;
  text-align: center;
  transition: var(--transition);
}

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

.expert-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 12px;
  border: 3px solid var(--primary);
}

.expert-name {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 4px;
}

.expert-title {
  font-size: 12px;
  color: var(--accent);
  margin-bottom: 8px;
}

.expert-desc {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: 14px;
}

.expert-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  justify-content: center;
  margin-bottom: 14px;
}

.expert-tag {
  background: var(--dark-3);
  color: var(--text-secondary);
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 10px;
  border: 1px solid var(--border);
}

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

.btn-sm {
  font-size: 12px;
  padding: 6px 14px;
  border-radius: 6px;
  border: 1px solid var(--primary);
  color: var(--primary-light);
  background: transparent;
  cursor: pointer;
  transition: var(--transition);
}

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

.btn-sm-accent {
  border-color: var(--accent);
  color: var(--accent);
}

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

/* ============================================
   用户评价
   ============================================ */
.review-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.review-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  transition: var(--transition);
}

.review-card:hover {
  border-color: var(--primary);
}

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

.review-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 700;
  color: white;
  flex-shrink: 0;
}

.review-user {
  flex: 1;
}

.review-name {
  font-size: 14px;
  font-weight: 600;
}

.review-date {
  font-size: 11px;
  color: var(--text-muted);
}

.review-stars {
  color: var(--accent);
  font-size: 14px;
}

.review-text {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.review-tag {
  display: inline-block;
  background: rgba(26,124,62,0.15);
  color: var(--primary-light);
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 10px;
  margin-top: 8px;
}

/* ============================================
   FAQ
   ============================================ */
.faq-section {
  background: var(--dark-2);
}

.faq-list {
  max-width: 860px;
  margin: 0 auto;
}

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

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

.faq-question {
  padding: 18px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  user-select: none;
}

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

.faq-icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--dark-3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  color: var(--primary-light);
  transition: transform 0.3s ease;
  flex-shrink: 0;
}

.faq-item.open .faq-icon {
  transform: rotate(45deg);
  background: var(--primary);
  color: white;
}

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

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

.faq-answer-inner {
  padding: 0 20px 18px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  border-top: 1px solid var(--border);
  padding-top: 14px;
}

/* ============================================
   合作品牌
   ============================================ */
.partner-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
  align-items: center;
}

.partner-item {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 24px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
  transition: var(--transition);
  min-width: 120px;
  text-align: center;
}

.partner-item:hover {
  border-color: var(--primary);
  color: var(--primary-light);
}

/* ============================================
   社区功能
   ============================================ */
.community-section {
  background: linear-gradient(135deg, var(--dark-2) 0%, var(--dark) 100%);
  position: relative;
  overflow: hidden;
}

.community-section::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(26,124,62,0.1) 0%, transparent 70%);
  pointer-events: none;
}

.community-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.community-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 20px;
  text-align: center;
  transition: var(--transition);
}

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

.community-icon {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 14px;
  font-size: 24px;
}

.community-card h4 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
}

.community-card p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.5;
}

/* ============================================
   AI功能
   ============================================ */
.ai-section {
  background: var(--dark);
}

.ai-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.ai-card {
  background: linear-gradient(135deg, var(--card-bg), var(--dark-3));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  position: relative;
  overflow: hidden;
  transition: var(--transition);
}

.ai-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
}

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

.ai-icon {
  font-size: 36px;
  margin-bottom: 14px;
}

.ai-card h4 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text-primary);
}

.ai-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
}

.ai-badge {
  display: inline-block;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  color: white;
  font-size: 11px;
  padding: 3px 10px;
  border-radius: 10px;
  margin-top: 12px;
  font-weight: 600;
}

/* ============================================
   联系我们
   ============================================ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
}

.contact-info {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
}

.contact-info h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--primary-light);
}

.contact-item {
  display: flex;
  gap: 12px;
  margin-bottom: 16px;
  align-items: flex-start;
}

.contact-icon {
  width: 36px;
  height: 36px;
  background: var(--dark-3);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  flex-shrink: 0;
}

.contact-text {
  flex: 1;
}

.contact-label {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 2px;
}

.contact-value {
  font-size: 14px;
  color: var(--text-primary);
  font-weight: 500;
}

.qr-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.qr-item {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
}

.qr-item img {
  width: 120px;
  height: 120px;
  margin: 0 auto 10px;
  border-radius: 8px;
}

.qr-item p {
  font-size: 13px;
  color: var(--text-secondary);
}

/* ============================================
   社交分享
   ============================================ */
.share-section {
  background: var(--dark-2);
  padding: 30px 0;
  border-top: 1px solid var(--border);
}

.share-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.share-label {
  font-size: 14px;
  color: var(--text-muted);
}

.share-btns {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.share-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  transition: var(--transition);
  cursor: pointer;
  border: none;
}

.share-btn-wechat { background: #07c160; color: white; }
.share-btn-weibo { background: #e6162d; color: white; }
.share-btn-douyin { background: #010101; color: white; border: 1px solid #333; }
.share-btn-bilibili { background: #00a1d6; color: white; }

.share-btn:hover {
  opacity: 0.85;
  transform: translateY(-2px);
}

/* ============================================
   页脚
   ============================================ */
.site-footer {
  background: var(--dark-2);
  border-top: 2px solid var(--primary);
  padding: 50px 0 20px;
}

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

.footer-brand .footer-logo {
  margin-bottom: 14px;
}

.footer-brand p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 16px;
}

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

.footer-social a {
  width: 36px;
  height: 36px;
  background: var(--dark-3);
  border: 1px solid var(--border);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  color: var(--text-secondary);
  transition: var(--transition);
}

.footer-social a:hover {
  border-color: var(--primary);
  color: var(--primary-light);
  background: rgba(26,124,62,0.1);
}

.footer-col h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-links a {
  font-size: 13px;
  color: var(--text-muted);
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--primary-light);
  padding-left: 4px;
}

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

.footer-copyright {
  font-size: 13px;
  color: var(--text-muted);
}

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

.footer-update {
  font-size: 12px;
  color: var(--text-muted);
}

.footer-icp {
  font-size: 12px;
  color: var(--text-muted);
}

/* ============================================
   内页样式
   ============================================ */
.page-hero {
  background: linear-gradient(135deg, var(--dark-2), var(--dark));
  padding: 50px 0;
  border-bottom: 1px solid var(--border);
}

.page-hero h1 {
  font-size: 36px;
  font-weight: 800;
  margin-bottom: 12px;
}

.page-hero h1 span {
  color: var(--primary-light);
}

.page-hero p {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 700px;
  line-height: 1.7;
}

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

.content-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 30px;
}

.sidebar {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

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

.sidebar-widget h4 {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 14px;
  color: var(--primary-light);
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}

.sidebar-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.sidebar-list a {
  font-size: 13px;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 0;
  border-bottom: 1px solid var(--border);
}

.sidebar-list a:last-child {
  border-bottom: none;
}

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

.sidebar-list a::before {
  content: '▶';
  color: var(--primary);
  font-size: 10px;
}

/* 文章内容 */
.article-content {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px;
}

.article-content h2 {
  font-size: 22px;
  font-weight: 700;
  margin: 24px 0 14px;
  color: var(--text-primary);
}

.article-content h2:first-child {
  margin-top: 0;
}

.article-content h3 {
  font-size: 18px;
  font-weight: 600;
  margin: 20px 0 10px;
  color: var(--primary-light);
}

.article-content p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 14px;
}

.article-content ul {
  list-style: disc;
  padding-left: 20px;
  margin-bottom: 14px;
}

.article-content ul li {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 6px;
}

/* ============================================
   How-To 加入社区
   ============================================ */
.howto-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.howto-step {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 20px;
  text-align: center;
  position: relative;
  transition: var(--transition);
}

.howto-step:hover {
  border-color: var(--primary);
}

.step-num {
  width: 44px;
  height: 44px;
  background: var(--primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 800;
  color: white;
  margin: 0 auto 14px;
}

.howto-step h4 {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 8px;
}

.howto-step p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.5;
}

/* ============================================
   弹幕效果
   ============================================ */
.danmu-container {
  position: relative;
  background: var(--dark-3);
  border-radius: var(--radius);
  height: 60px;
  overflow: hidden;
  border: 1px solid var(--border);
  margin: 16px 0;
}

.danmu-track {
  position: absolute;
  white-space: nowrap;
  animation: danmuScroll 12s linear infinite;
  display: flex;
  gap: 40px;
  align-items: center;
  height: 100%;
}

.danmu-item {
  font-size: 14px;
  color: var(--text-secondary);
  background: rgba(26,124,62,0.15);
  padding: 4px 12px;
  border-radius: 20px;
  white-space: nowrap;
}

@keyframes danmuScroll {
  0% { transform: translateX(100vw); }
  100% { transform: translateX(-200%); }
}

/* ============================================
   动画
   ============================================ */
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.85); }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slideInLeft {
  from { opacity: 0; transform: translateX(-20px); }
  to { opacity: 1; transform: translateX(0); }
}

.animate-fade-up {
  animation: fadeInUp 0.6s ease forwards;
}

/* ============================================
   懒加载占位
   ============================================ */
img[data-src] {
  background: var(--dark-3);
  min-height: 100px;
}

/* ============================================
   响应式设计
   ============================================ */
@media (max-width: 1200px) {
  .video-grid { grid-template-columns: repeat(3, 1fr); }
  .expert-grid { grid-template-columns: repeat(3, 1fr); }
  .review-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 992px) {
  .hero-title { font-size: 36px; }
  .video-grid { grid-template-columns: repeat(2, 1fr); }
  .live-grid { grid-template-columns: repeat(2, 1fr); }
  .score-grid { grid-template-columns: repeat(2, 1fr); }
  .community-grid { grid-template-columns: repeat(2, 1fr); }
  .ai-grid { grid-template-columns: repeat(2, 1fr); }
  .howto-steps { grid-template-columns: repeat(2, 1fr); }
  .content-layout { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .hero-stats { position: static; margin-top: 20px; }
}

@media (max-width: 768px) {
  .main-nav {
    display: none;
    position: absolute;
    top: 70px;
    left: 0;
    right: 0;
    background: var(--dark-2);
    flex-direction: column;
    padding: 16px;
    border-bottom: 2px solid var(--primary);
    gap: 4px;
  }

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

  .main-nav a {
    width: 100%;
    padding: 12px 16px;
  }

  .menu-toggle {
    display: flex;
  }

  .hero-section { height: auto; padding: 60px 0; }
  .hero-title { font-size: 28px; }
  .hero-desc { font-size: 15px; }

  .video-grid { grid-template-columns: repeat(2, 1fr); }
  .video-card-lg { grid-column: span 1; }
  .expert-grid { grid-template-columns: repeat(2, 1fr); }
  .review-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .section-header { flex-direction: column; align-items: flex-start; gap: 10px; }
  .search-hot-tags { display: none; }

  .hero-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
  .howto-steps { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 480px) {
  .video-grid { grid-template-columns: 1fr; }
  .live-grid { grid-template-columns: 1fr; }
  .score-grid { grid-template-columns: 1fr; }
  .community-grid { grid-template-columns: 1fr; }
  .ai-grid { grid-template-columns: 1fr; }
  .expert-grid { grid-template-columns: 1fr; }
  .howto-steps { grid-template-columns: 1fr; }
  .hero-title { font-size: 24px; }
  .section-title { font-size: 20px; }
  .qr-grid { grid-template-columns: 1fr; }
}

/* ============================================
   滚动条美化
   ============================================ */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: var(--dark);
}

::-webkit-scrollbar-thumb {
  background: var(--primary);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--primary-light);
}

/* ============================================
   工具类
   ============================================ */
.text-center { text-align: center; }
.text-primary { color: var(--primary-light); }
.text-accent { color: var(--accent); }
.text-muted { color: var(--text-muted); }
.mt-20 { margin-top: 20px; }
.mb-20 { margin-bottom: 20px; }
.hidden { display: none; }
.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.gap-10 { gap: 10px; }
.gap-20 { gap: 20px; }
.w-full { width: 100%; }

/* 弹窗 */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.8);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: all;
}

.modal-box {
  background: var(--dark-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px;
  max-width: 500px;
  width: 90%;
  position: relative;
}

.modal-close {
  position: absolute;
  top: 14px;
  right: 14px;
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 20px;
  cursor: pointer;
}

.modal-title {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 16px;
}

/* 标签页 */
.tabs {
  display: flex;
  gap: 4px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 24px;
}

.tab-btn {
  padding: 10px 20px;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-muted);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  font-family: inherit;
}

.tab-btn.active {
  color: var(--primary-light);
  border-bottom-color: var(--primary);
}

.tab-btn:hover {
  color: var(--text-primary);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

/* ===== 新闻卡片 ===== */
.news-card {
  display: flex;
  gap: 20px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
}
.news-card:hover {
  border-color: var(--primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}
.news-card-img {
  flex-shrink: 0;
  width: 200px;
}
.news-card-img img {
  width: 100%;
  height: 140px;
  object-fit: cover;
}
.news-card-content {
  flex: 1;
  padding: 16px 16px 16px 0;
}
.news-card-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
}
.news-card-title {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
  line-height: 1.5;
}
.news-card-title a {
  color: var(--text-primary);
}
.news-card-title a:hover {
  color: var(--primary-light);
}
.news-card-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 12px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-read-more {
  font-size: 13px;
  color: var(--primary-light);
  font-weight: 600;
}

/* ===== 页面英雄区 ===== */
.page-hero {
  background: linear-gradient(135deg, #0d1117 0%, #161b22 50%, #1a2744 100%);
  padding: 50px 0;
  border-bottom: 1px solid var(--border);
}
.page-hero h1 {
  font-size: clamp(22px, 4vw, 32px);
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 16px;
  line-height: 1.3;
}
.page-hero h1 span {
  color: var(--primary-light);
}
.page-hero p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.8;
  max-width: 800px;
}

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

/* ===== 内容布局 ===== */
.content-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 30px;
  align-items: start;
}
@media (max-width: 900px) {
  .content-layout {
    grid-template-columns: 1fr;
  }
}

/* ===== 文章内容 ===== */
.article-content {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}
.article-content h2 {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary-light);
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}
.article-content h3 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
  margin: 16px 0 8px;
}
.article-content p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 12px;
}
.article-content ul {
  padding-left: 20px;
  margin-bottom: 12px;
}
.article-content ul li {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 4px;
}

/* ===== 侧边栏 ===== */
.sidebar {
  display: flex;
  flex-direction: column;
  gap: 20px;
  position: sticky;
  top: 80px;
}
.sidebar-widget {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
}
.sidebar-widget h4 {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}
.sidebar-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.sidebar-list a, .sidebar-list span {
  font-size: 13px;
  color: var(--text-secondary);
  padding: 6px 8px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  display: block;
}
.sidebar-list a:hover {
  color: var(--primary-light);
  background: var(--dark-3);
}

/* ===== 联系表单 ===== */
.contact-form {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}
.form-group {
  margin-bottom: 16px;
}
.form-group label {
  display: block;
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 6px;
  font-weight: 600;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  background: var(--dark-3);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  color: var(--text-primary);
  font-size: 14px;
  font-family: inherit;
  transition: var(--transition);
  box-sizing: border-box;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(26,124,62,0.2);
}
.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

/* ===== 视频网格3列 ===== */
.video-grid-3 {
  grid-template-columns: repeat(3, 1fr) !important;
}
@media (max-width: 768px) {
  .video-grid-3 {
    grid-template-columns: 1fr !important;
  }
}

/* ===== 成功状态 ===== */
.success { color: var(--primary-light) !important; }

/* ===== 导航栏滚动样式 ===== */
.site-header.scrolled {
  box-shadow: 0 4px 20px rgba(0,0,0,0.5);
  background: rgba(13,17,23,0.98);
}

/* ===== 弹幕容器 ===== */
.danmu-container {
  overflow: hidden;
  white-space: nowrap;
  height: 32px;
  display: flex;
  align-items: center;
}
.danmu-track {
  display: inline-flex;
  gap: 40px;
  will-change: transform;
}
.danmu-item {
  font-size: 13px;
  color: var(--text-secondary);
  flex-shrink: 0;
}

/* ===== 分享按钮 ===== */
.share-section {
  background: var(--dark-3);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 12px 0;
}
.share-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.share-label {
  font-size: 13px;
  color: var(--text-muted);
}
.share-btns {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.share-btn {
  padding: 6px 14px;
  border-radius: 20px;
  border: 1px solid var(--border);
  background: var(--card-bg);
  color: var(--text-secondary);
  font-size: 12px;
  cursor: pointer;
  transition: var(--transition);
  font-family: inherit;
}
.share-btn:hover {
  border-color: var(--primary);
  color: var(--primary-light);
}

/* ===== 模态框 ===== */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  z-index: 9999;
  align-items: center;
  justify-content: center;
}
.modal-overlay.show {
  display: flex;
}
.modal-box {
  background: var(--dark-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  max-width: 400px;
  width: 90%;
  position: relative;
}
.modal-close {
  position: absolute;
  top: 12px;
  right: 12px;
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 18px;
  cursor: pointer;
}
.modal-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
}

/* ===== 响应式新闻卡片 ===== */
@media (max-width: 640px) {
  .news-card {
    flex-direction: column;
  }
  .news-card-img {
    width: 100%;
  }
  .news-card-img img {
    height: 180px;
  }
  .news-card-content {
    padding: 12px;
  }
}

/* ===== 打印样式 ===== */
@media print {
  .site-header, .top-bar, .search-bar-section, .share-section, .site-footer { display: none; }
  body { background: white; color: black; }
}