/* ============================================
   糖心vlog - 原创样式表
   品牌：糖心vlog | 域名：etradelink.cn
   配色：活力橙 #FF6B35 / 深空蓝 #1A1A2E / 电竞红 #E94560
   ============================================ */

/* === 基础重置与变量 === */
:root {
  --primary: #FF6B35;
  --secondary: #1A1A2E;
  --accent: #E94560;
  --bg-dark: #0F0F1A;
  --bg-card: #161628;
  --bg-card-hover: #1E1E38;
  --text-main: #EAEAEA;
  --text-muted: #9A9AB0;
  --text-bright: #FFFFFF;
  --gradient-main: linear-gradient(135deg, #FF6B35, #E94560);
  --gradient-dark: linear-gradient(180deg, #0F0F1A 0%, #1A1A2E 100%);
  --shadow-card: 0 4px 24px rgba(0,0,0,0.35);
  --shadow-glow: 0 0 20px rgba(255,107,53,0.25);
  --radius: 12px;
  --radius-sm: 8px;
  --transition: all 0.3s ease;
  --max-width: 1280px;
}

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

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

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

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

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

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

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

/* === 头部导航 === */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(15, 15, 26, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,107,53,0.15);
  transition: var(--transition);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.site-logo img {
  height: 42px;
  width: auto;
}

.site-logo span {
  font-size: 1.25rem;
  font-weight: 700;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 6px;
}

.main-nav a {
  color: var(--text-main);
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 500;
  transition: var(--transition);
  white-space: nowrap;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--text-bright);
  background: rgba(255,107,53,0.15);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-main);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 8px;
}

/* === 搜索框 === */
.search-bar {
  background: var(--secondary);
  padding: 12px 0;
  margin-top: 68px;
  border-bottom: 1px solid rgba(255,107,53,0.1);
}

.search-bar .container {
  display: flex;
  justify-content: center;
}

.search-box {
  display: flex;
  max-width: 600px;
  width: 100%;
  position: relative;
}

.search-box input {
  flex: 1;
  padding: 12px 20px;
  background: var(--bg-card);
  border: 1px solid rgba(255,107,53,0.2);
  border-radius: var(--radius) 0 0 var(--radius);
  color: var(--text-main);
  font-size: 0.95rem;
  outline: none;
  transition: var(--transition);
}

.search-box input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 12px rgba(255,107,53,0.2);
}

.search-box button {
  padding: 12px 24px;
  background: var(--gradient-main);
  border: none;
  border-radius: 0 var(--radius) var(--radius) 0;
  color: var(--text-bright);
  font-size: 0.95rem;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

.search-box button:hover {
  opacity: 0.9;
  transform: scale(1.02);
}

/* === Banner区域 === */
.hero-banner {
  position: relative;
  min-height: 520px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--bg-dark);
}

.hero-banner .banner-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.55;
  filter: brightness(0.7);
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 60px 20px;
  max-width: 800px;
}

.hero-content h1 {
  font-size: 2.8rem;
  font-weight: 800;
  margin-bottom: 16px;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.3;
}

.hero-content p {
  font-size: 1.15rem;
  color: var(--text-muted);
  margin-bottom: 28px;
  line-height: 1.8;
}

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

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  background: var(--gradient-main);
  color: var(--text-bright);
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 1rem;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 30px rgba(255,107,53,0.4);
  color: var(--text-bright);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: var(--transition);
}

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

/* === 通用板块 === */
.section {
  padding: 70px 0;
}

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

.section-title {
  text-align: center;
  margin-bottom: 48px;
}

.section-title h2 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-bright);
  margin-bottom: 12px;
}

.section-title h2 span {
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-title p {
  color: var(--text-muted);
  font-size: 1.05rem;
  max-width: 600px;
  margin: 0 auto;
}

/* === 视频卡片网格 === */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}

.video-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
  border: 1px solid rgba(255,107,53,0.08);
  position: relative;
}

.video-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card);
  border-color: rgba(255,107,53,0.25);
  background: var(--bg-card-hover);
}

.video-thumb {
  position: relative;
  padding-top: 56.25%;
  overflow: hidden;
  background: #0a0a18;
}

.video-thumb img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

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

.play-btn {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.85);
  width: 60px;
  height: 60px;
  background: rgba(255,107,53,0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: var(--transition);
  cursor: pointer;
  z-index: 3;
}

.play-btn::after {
  content: "";
  display: block;
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 10px 0 10px 18px;
  border-color: transparent transparent transparent #fff;
  margin-left: 4px;
}

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

.video-duration {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: rgba(0,0,0,0.75);
  color: var(--text-bright);
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.8rem;
  z-index: 2;
}

.video-info {
  padding: 16px;
}

.video-info h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-bright);
  margin-bottom: 8px;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.video-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  color: var(--text-muted);
  font-size: 0.85rem;
}

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

.video-tags {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-top: 10px;
}

.video-tags span {
  padding: 2px 10px;
  background: rgba(255,107,53,0.1);
  color: var(--primary);
  border-radius: 20px;
  font-size: 0.78rem;
}

/* === 模块卡片网格 === */
.module-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.module-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 28px;
  transition: var(--transition);
  border: 1px solid rgba(255,107,53,0.08);
  text-align: center;
}

.module-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
  border-color: rgba(255,107,53,0.2);
}

.module-card .icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
  background: var(--gradient-main);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.module-card h3 {
  font-size: 1.1rem;
  color: var(--text-bright);
  margin-bottom: 10px;
}

.module-card p {
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.6;
}

/* === 社区卡片 === */
.community-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.community-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
  border: 1px solid rgba(233,69,96,0.08);
}

.community-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 4px 24px rgba(233,69,96,0.2);
}

.community-card img {
  width: 100%;
  height: 180px;
  object-fit: cover;
}

.community-card .card-body {
  padding: 18px;
}

.community-card h3 {
  font-size: 1.05rem;
  color: var(--text-bright);
  margin-bottom: 8px;
}

.community-card p {
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* === 专家展示 === */
.expert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 28px;
}

.expert-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 28px;
  text-align: center;
  transition: var(--transition);
  border: 1px solid rgba(255,107,53,0.08);
}

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

.expert-card .avatar {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 16px;
  border: 3px solid var(--primary);
}

.expert-card h3 {
  font-size: 1.1rem;
  color: var(--text-bright);
  margin-bottom: 4px;
}

.expert-card .role {
  color: var(--primary);
  font-size: 0.88rem;
  margin-bottom: 12px;
}

.expert-card p {
  color: var(--text-muted);
  font-size: 0.88rem;
  line-height: 1.6;
  margin-bottom: 16px;
}

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

.expert-card .expert-btns a {
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 0.82rem;
  font-weight: 500;
}

/* === 用户评论 === */
.review-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}

.review-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 24px;
  border: 1px solid rgba(255,107,53,0.08);
  transition: var(--transition);
}

.review-card:hover {
  border-color: rgba(255,107,53,0.2);
}

.review-stars {
  color: #FFB800;
  margin-bottom: 12px;
  font-size: 1rem;
  letter-spacing: 2px;
}

.review-card blockquote {
  color: var(--text-main);
  font-size: 0.95rem;
  line-height: 1.7;
  margin-bottom: 14px;
  font-style: italic;
}

.review-author {
  display: flex;
  align-items: center;
  gap: 10px;
}

.review-author .avatar-sm {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--gradient-main);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-bright);
  font-weight: 700;
  font-size: 0.9rem;
}

.review-author .name {
  color: var(--text-bright);
  font-weight: 600;
  font-size: 0.9rem;
}

.review-author .date {
  color: var(--text-muted);
  font-size: 0.8rem;
}

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

.faq-item {
  background: var(--bg-card);
  border-radius: var(--radius);
  margin-bottom: 12px;
  border: 1px solid rgba(255,107,53,0.08);
  overflow: hidden;
}

.faq-question {
  padding: 18px 24px;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
  color: var(--text-bright);
  transition: var(--transition);
}

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

.faq-question .arrow {
  transition: var(--transition);
  font-size: 1.2rem;
  color: var(--primary);
}

.faq-item.open .faq-question .arrow {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}

.faq-answer-inner {
  padding: 0 24px 18px;
  color: var(--text-muted);
  line-height: 1.8;
  font-size: 0.95rem;
}

.faq-item.open .faq-answer {
  max-height: 500px;
}

/* === 联系我们 === */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.contact-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 28px;
  text-align: center;
  border: 1px solid rgba(255,107,53,0.08);
}

.contact-card h3 {
  color: var(--text-bright);
  margin-bottom: 12px;
  font-size: 1.05rem;
}

.contact-card p {
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.7;
}

.contact-card img {
  max-width: 160px;
  margin: 12px auto 0;
  border-radius: var(--radius-sm);
}

/* === 合作品牌 === */
.partner-wall {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  justify-content: center;
  align-items: center;
}

.partner-wall .partner-item {
  background: var(--bg-card);
  padding: 16px 28px;
  border-radius: var(--radius);
  border: 1px solid rgba(255,107,53,0.08);
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.95rem;
  transition: var(--transition);
}

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

/* === How-To指南 === */
.howto-steps {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 24px;
  margin-top: 32px;
}

.howto-step {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
  border: 1px solid rgba(255,107,53,0.08);
  position: relative;
}

.howto-step .step-num {
  width: 44px;
  height: 44px;
  background: var(--gradient-main);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-bright);
  font-weight: 700;
  font-size: 1.2rem;
  margin: 0 auto 14px;
}

.howto-step h4 {
  color: var(--text-bright);
  margin-bottom: 8px;
}

.howto-step p {
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* === 页脚 === */
.site-footer {
  background: var(--secondary);
  padding: 50px 0 0;
  border-top: 1px solid rgba(255,107,53,0.1);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 36px;
  margin-bottom: 36px;
}

.footer-col h4 {
  color: var(--text-bright);
  font-size: 1.05rem;
  margin-bottom: 16px;
  position: relative;
  padding-bottom: 10px;
}

.footer-col h4::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 36px;
  height: 3px;
  background: var(--gradient-main);
  border-radius: 2px;
}

.footer-col p,
.footer-col a {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 2;
  display: block;
}

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

.footer-col img {
  max-width: 130px;
  border-radius: var(--radius-sm);
  margin-top: 8px;
}

.footer-bottom {
  border-top: 1px solid rgba(255,107,53,0.08);
  padding: 20px 0;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
}

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

/* === 社交分享 === */
.share-bar {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 20px;
}

.share-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-bright);
  transition: var(--transition);
  cursor: pointer;
  border: none;
}

.share-btn.wechat { background: #07C160; }
.share-btn.weibo { background: #E6162D; }
.share-btn.douyin { background: #161823; border: 1px solid #FE2C55; }
.share-btn.bilibili { background: #00A1D6; }

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

/* === 面包屑 === */
.breadcrumb {
  padding: 16px 0;
  margin-top: 68px;
}

.breadcrumb-list {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
  font-size: 0.9rem;
  color: var(--text-muted);
}

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

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

.breadcrumb-list .sep {
  color: var(--text-muted);
  opacity: 0.5;
}

.breadcrumb-list .current {
  color: var(--primary);
}

/* === 内页头部 === */
.page-hero {
  padding: 100px 0 50px;
  text-align: center;
  background: var(--gradient-dark);
  margin-top: 68px;
}

.page-hero h1 {
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--text-bright);
  margin-bottom: 12px;
}

.page-hero p {
  color: var(--text-muted);
  font-size: 1.05rem;
  max-width: 600px;
  margin: 0 auto;
}

/* === 数据统计条 === */
.stats-bar {
  display: flex;
  justify-content: center;
  gap: 48px;
  flex-wrap: wrap;
  padding: 32px 0;
}

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

.stat-item .num {
  font-size: 2.2rem;
  font-weight: 800;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-item .label {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-top: 4px;
}

/* === 懒加载占位 === */
.lazy-img {
  opacity: 0;
  transition: opacity 0.5s ease;
}

.lazy-img.loaded {
  opacity: 1;
}

/* === MCP前端代码区域 === */
.mcp-widget {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 20px;
  border: 1px solid rgba(255,107,53,0.1);
  margin-top: 20px;
}

.mcp-widget .mcp-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
  color: var(--text-bright);
  font-weight: 600;
}

.mcp-widget .mcp-status {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #07C160;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.mcp-widget .mcp-info {
  color: var(--text-muted);
  font-size: 0.88rem;
}

/* === 响应式设计 === */
@media (max-width: 1024px) {
  .hero-content h1 {
    font-size: 2.2rem;
  }
  .stats-bar {
    gap: 28px;
  }
}

@media (max-width: 768px) {
  .main-nav {
    display: none;
    position: fixed;
    top: 68px;
    left: 0;
    width: 100%;
    background: rgba(15,15,26,0.98);
    flex-direction: column;
    padding: 20px;
    gap: 4px;
    border-bottom: 1px solid rgba(255,107,53,0.15);
  }

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

  .main-nav a {
    width: 100%;
    text-align: center;
    padding: 12px;
  }

  .nav-toggle {
    display: block;
  }

  .hero-banner {
    min-height: 400px;
  }

  .hero-content h1 {
    font-size: 1.8rem;
  }

  .hero-content p {
    font-size: 1rem;
  }

  .section {
    padding: 48px 0;
  }

  .section-title h2 {
    font-size: 1.6rem;
  }

  .video-grid {
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }

  .stats-bar {
    gap: 20px;
  }

  .stat-item .num {
    font-size: 1.6rem;
  }
}

@media (max-width: 480px) {
  .header-inner {
    height: 56px;
  }

  .site-logo img {
    height: 32px;
  }

  .search-bar {
    margin-top: 56px;
  }

  .breadcrumb {
    margin-top: 56px;
  }

  .hero-content h1 {
    font-size: 1.5rem;
  }

  .hero-btns {
    flex-direction: column;
    align-items: center;
  }

  .btn-primary, .btn-outline {
    width: 100%;
    justify-content: center;
  }

  .video-grid {
    grid-template-columns: 1fr;
  }

  .module-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }

  .page-hero {
    padding: 80px 0 36px;
    margin-top: 56px;
  }

  .page-hero h1 {
    font-size: 1.6rem;
  }
}

/* === 动画 === */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

/* === 视频播放器弹窗 === */
.video-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.88);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: fadeIn 0.3s ease;
}
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}
.video-player-modal {
  background: var(--bg-card);
  border-radius: var(--radius);
  width: 90%;
  max-width: 800px;
  overflow: hidden;
  box-shadow: 0 8px 60px rgba(0,0,0,0.6);
}
.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 20px;
  background: var(--secondary);
  color: var(--text-bright);
  font-size: 0.95rem;
  font-weight: 600;
}
.modal-close {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.6rem;
  cursor: pointer;
  transition: var(--transition);
}
.modal-close:hover {
  color: var(--accent);
}
.modal-body {
  padding: 0;
}
.fake-player {
  position: relative;
}
.fake-player img {
  display: block;
  width: 100%;
  border-radius: 0;
}
.player-controls {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  background: #111;
}
.ctrl-btn {
  background: none;
  border: none;
  color: var(--text-main);
  font-size: 1.1rem;
  cursor: pointer;
  padding: 4px 8px;
  transition: var(--transition);
}
.ctrl-btn:hover {
  color: var(--primary);
}
.progress-bar {
  flex: 1;
  height: 6px;
  background: #333;
  border-radius: 3px;
  overflow: hidden;
  cursor: pointer;
}
.progress-fill {
  height: 100%;
  width: 0%;
  background: var(--gradient-main);
  border-radius: 3px;
  transition: width 0.2s linear;
}
.time-display {
  color: var(--text-muted);
  font-size: 0.78rem;
  white-space: nowrap;
}

/* === 关于页面内容 === */
.about-content {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 20px;
}
.about-content p {
  margin-bottom: 18px;
  line-height: 1.85;
  color: var(--text-main);
  font-size: 0.95rem;
  text-indent: 2em;
}

/* === 播放按钮可见状态 === */
.play-btn.visible {
  opacity: 1 !important;
  transform: translate(-50%, -50%) scale(1) !important;
}

/* === 响应式补充 === */
@media (max-width: 600px) {
  .video-player-modal {
    width: 96%;
  }
  .modal-header {
    padding: 10px 14px;
    font-size: 0.85rem;
  }
  .player-controls {
    padding: 8px 10px;
    gap: 6px;
  }
  .time-display {
    font-size: 0.7rem;
  }
}