/* ============================================
   糖心 原创样式表 v2.0
   品牌色系：珊瑚粉 #E8456B / 深海蓝 #1A2B4A / 暖金 #F0C75E
   ============================================ */

/* --- CSS变量 --- */
:root {
    --nyh-coral: #E8456B;
    --nyh-coral-dark: #C93A5A;
    --nyh-coral-light: #FFE0E8;
    --nyh-navy: #1A2B4A;
    --nyh-navy-light: #2A3D62;
    --nyh-gold: #F0C75E;
    --nyh-gold-light: #FFF3D0;
    --nyh-white: #FFFFFF;
    --nyh-gray-50: #F8F9FA;
    --nyh-gray-100: #F0F2F5;
    --nyh-gray-200: #E4E6EB;
    --nyh-gray-300: #CED0D4;
    --nyh-gray-500: #8A8D91;
    --nyh-gray-700: #4B4F56;
    --nyh-gray-900: #1C1E21;
    --nyh-shadow: 0 2px 12px rgba(26,43,74,0.08);
    --nyh-shadow-lg: 0 8px 30px rgba(26,43,74,0.12);
    --nyh-radius: 12px;
    --nyh-radius-sm: 8px;
    --nyh-transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
    --nyh-font: 'PingFang SC','Hiragino Sans GB','Microsoft YaHei','Noto Sans SC',sans-serif;
}

/* --- 基础重置 --- */
*,*::before,*::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { font-family: var(--nyh-font); color: var(--nyh-gray-900); background: var(--nyh-white); line-height: 1.7; overflow-x: hidden; }
a { color: var(--nyh-coral); text-decoration: none; transition: var(--nyh-transition); }
a:hover { color: var(--nyh-coral-dark); }
img { max-width: 100%; height: auto; display: block; }
ul,ol { list-style: none; }
h1,h2,h3,h4,h5,h6 { line-height: 1.3; color: var(--nyh-navy); font-weight: 700; }

/* --- 容器 --- */
.nyh-container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* --- 按钮 --- */
.nyh-btn { display: inline-block; padding: 12px 32px; border-radius: var(--nyh-radius-sm); font-size: 1rem; font-weight: 600; cursor: pointer; transition: var(--nyh-transition); border: none; text-align: center; }
.nyh-btn-primary { background: linear-gradient(135deg, var(--nyh-coral), var(--nyh-coral-dark)); color: var(--nyh-white); box-shadow: 0 4px 15px rgba(232,69,107,0.35); }
.nyh-btn-primary:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(232,69,107,0.45); color: var(--nyh-white); }
.nyh-btn-outline { background: transparent; color: var(--nyh-coral); border: 2px solid var(--nyh-coral); }
.nyh-btn-outline:hover { background: var(--nyh-coral); color: var(--nyh-white); }
.nyh-btn-gold { background: linear-gradient(135deg, var(--nyh-gold), #E0B84E); color: var(--nyh-navy); }
.nyh-btn-gold:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(240,199,94,0.45); }
.nyh-btn-sm { display: inline-block; padding: 6px 16px; font-size: 0.82rem; font-weight: 500; border-radius: 6px; background: var(--nyh-coral); color: var(--nyh-white); transition: var(--nyh-transition); border: none; cursor: pointer; }
.nyh-btn-sm:hover { background: var(--nyh-coral-dark); color: var(--nyh-white); }
.nyh-btn-sm-outline { background: transparent; color: var(--nyh-coral); border: 1px solid var(--nyh-coral); }
.nyh-btn-sm-outline:hover { background: var(--nyh-coral); color: var(--nyh-white); }

/* ============================================
   顶部导航
   ============================================ */
.nyh-header { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; background: rgba(255,255,255,0.95); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); box-shadow: 0 1px 8px rgba(26,43,74,0.06); transition: var(--nyh-transition); }
.nyh-header.scrolled { box-shadow: 0 2px 16px rgba(26,43,74,0.1); }
.nyh-header-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.nyh-logo img { height: 42px; width: auto; }
.nyh-nav-list { display: flex; gap: 6px; }
.nyh-nav-link { display: block; padding: 8px 16px; font-size: 0.95rem; font-weight: 500; color: var(--nyh-gray-700); border-radius: var(--nyh-radius-sm); transition: var(--nyh-transition); }
.nyh-nav-link:hover, .nyh-nav-link.active { color: var(--nyh-coral); background: var(--nyh-coral-light); }

/* 搜索栏 */
.nyh-search-bar { padding: 0 0 10px; display: none; }
.nyh-search-bar.show { display: block; }
.nyh-search-form { display: flex; gap: 8px; max-width: 500px; }
.nyh-search-input { flex: 1; padding: 10px 16px; border: 2px solid var(--nyh-gray-200); border-radius: var(--nyh-radius-sm); font-size: 0.9rem; outline: none; transition: var(--nyh-transition); }
.nyh-search-input:focus { border-color: var(--nyh-coral); }
.nyh-search-btn { padding: 10px 16px; background: var(--nyh-coral); color: var(--nyh-white); border: none; border-radius: var(--nyh-radius-sm); cursor: pointer; transition: var(--nyh-transition); }
.nyh-search-btn:hover { background: var(--nyh-coral-dark); }

/* 移动端菜单按钮 */
.nyh-menu-toggle { display: none; background: none; border: none; cursor: pointer; padding: 8px; flex-direction: column; gap: 5px; }
.nyh-menu-toggle span { display: block; width: 24px; height: 2px; background: var(--nyh-navy); border-radius: 2px; transition: var(--nyh-transition); }

/* ============================================
   面包屑导航
   ============================================ */
.nyh-breadcrumb { background: var(--nyh-gray-50); padding: 12px 0; margin-top: 68px; border-bottom: 1px solid var(--nyh-gray-200); }
.nyh-breadcrumb-list { display: flex; flex-wrap: wrap; gap: 4px; font-size: 0.85rem; }
.nyh-breadcrumb-list li::after { content: '/'; margin-left: 8px; color: var(--nyh-gray-300); }
.nyh-breadcrumb-list li:last-child::after { display: none; }
.nyh-breadcrumb-list a { color: var(--nyh-gray-500); }
.nyh-breadcrumb-list a:hover { color: var(--nyh-coral); }
.nyh-breadcrumb-list li:last-child span { color: var(--nyh-navy); font-weight: 500; }

/* ============================================
   Hero 区域
   ============================================ */
.nyh-hero { position: relative; min-height: 600px; display: flex; align-items: center; overflow: hidden; margin-top: 68px; }
.nyh-hero-bg { position: absolute; inset: 0; }
.nyh-hero-bg img { width: 100%; height: 100%; object-fit: cover; }
.nyh-hero-bg::after { content: ''; position: absolute; inset: 0; background: linear-gradient(135deg, rgba(26,43,74,0.75) 0%, rgba(232,69,107,0.45) 100%); }
.nyh-hero-content { position: relative; z-index: 2; color: var(--nyh-white); max-width: 700px; padding: 60px 20px; }
.nyh-hero-content h1 { font-size: 2.8rem; margin-bottom: 16px; color: var(--nyh-white); text-shadow: 0 2px 8px rgba(0,0,0,0.3); }
.nyh-hero-content p { font-size: 1.15rem; margin-bottom: 28px; opacity: 0.95; line-height: 1.8; }
.nyh-hero-actions { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 20px; }
.nyh-hero-tags { display: flex; gap: 10px; flex-wrap: wrap; }
.nyh-hero-tags .nyh-tag { background: rgba(255,255,255,0.2); color: var(--nyh-white); border: 1px solid rgba(255,255,255,0.3); }

/* ============================================
   通用区块
   ============================================ */
.nyh-section { padding: 70px 0; }
.nyh-section:nth-child(even) { background: var(--nyh-gray-50); }
.nyh-section-header { text-align: center; margin-bottom: 50px; }
.nyh-section-header h2 { font-size: 2rem; margin-bottom: 12px; }
.nyh-section-header p { font-size: 1.05rem; color: var(--nyh-gray-500); max-width: 600px; margin: 0 auto; }
.nyh-page-title { font-size: 2.2rem; text-align: center; margin-bottom: 12px; }
.nyh-page-subtitle { font-size: 1.05rem; text-align: center; color: var(--nyh-gray-500); margin-bottom: 40px; }

/* ============================================
   视频卡片网格
   ============================================ */
.nyh-video-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.nyh-video-card { background: var(--nyh-white); border-radius: var(--nyh-radius); overflow: hidden; box-shadow: var(--nyh-shadow); transition: var(--nyh-transition); position: relative; }
.nyh-video-card:hover { transform: translateY(-6px); box-shadow: var(--nyh-shadow-lg); }
.nyh-video-thumb { position: relative; aspect-ratio: 16/9; overflow: hidden; }
.nyh-video-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.nyh-video-thumb video { width: 100%; height: 100%; object-fit: cover; display: block; }
.nyh-video-card:hover .nyh-video-thumb img { transform: scale(1.05); }

/* 播放按钮覆盖层 */
.nyh-video-play { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; background: rgba(26,43,74,0.35); opacity: 0; transition: var(--nyh-transition); cursor: pointer; z-index: 2; }
.nyh-video-card:hover .nyh-video-play { opacity: 1; }
.nyh-video-play svg { filter: drop-shadow(0 2px 8px rgba(0,0,0,0.3)); }
.nyh-play-text { color: var(--nyh-white); font-size: 0.85rem; margin-top: 8px; font-weight: 500; }

/* 视频徽章 */
.nyh-video-badge { display: inline-block; padding: 3px 10px; background: var(--nyh-coral); color: var(--nyh-white); font-size: 0.75rem; font-weight: 600; border-radius: 4px; position: absolute; top: 8px; left: 8px; z-index: 3; }
.nyh-video-duration { position: absolute; bottom: 8px; right: 8px; background: rgba(0,0,0,0.7); color: var(--nyh-white); padding: 2px 8px; border-radius: 4px; font-size: 0.8rem; z-index: 3; }

/* 视频卡片内容 */
.nyh-video-info { padding: 18px; }
.nyh-video-info h3 { font-size: 1.05rem; margin-bottom: 8px; line-height: 1.4; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.nyh-video-info h3 a { color: var(--nyh-navy); }
.nyh-video-info h3 a:hover { color: var(--nyh-coral); }
.nyh-video-meta { font-size: 0.82rem; color: var(--nyh-gray-500); margin-bottom: 6px; }
.nyh-video-desc { font-size: 0.85rem; color: var(--nyh-gray-700); line-height: 1.5; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

/* ============================================
   视频详情页
   ============================================ */
.nyh-video-detail { padding-top: 40px; }
.nyh-video-player { margin-bottom: 40px; }
.nyh-video-wrapper { position: relative; border-radius: var(--nyh-radius); overflow: hidden; box-shadow: var(--nyh-shadow-lg); cursor: pointer; aspect-ratio: 16/9; }
.nyh-video-wrapper > img { width: 100%; height: 100%; object-fit: cover; display: block; }
.nyh-video-play-overlay { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; background: rgba(26,43,74,0.3); transition: var(--nyh-transition); }
.nyh-video-wrapper:hover .nyh-video-play-overlay { background: rgba(26,43,74,0.5); }
.nyh-video-info-bar { position: absolute; bottom: 0; left: 0; right: 0; background: linear-gradient(transparent, rgba(0,0,0,0.7)); padding: 20px; display: flex; gap: 16px; align-items: center; color: var(--nyh-white); font-size: 0.85rem; }
.nyh-video-content { display: grid; grid-template-columns: 1fr 340px; gap: 40px; }
.nyh-video-main h2 { font-size: 1.5rem; margin-bottom: 16px; }
.nyh-video-main h3 { font-size: 1.2rem; margin: 24px 0 12px; }
.nyh-video-main p { margin-bottom: 16px; color: var(--nyh-gray-700); }
.nyh-video-tags { margin-top: 30px; padding-top: 20px; border-top: 1px solid var(--nyh-gray-200); }
.nyh-video-tags h4 { font-size: 0.9rem; margin-bottom: 10px; }
.nyh-tag { display: inline-block; padding: 5px 14px; background: var(--nyh-gray-100); color: var(--nyh-gray-700); border-radius: 20px; font-size: 0.82rem; margin: 0 6px 8px 0; transition: var(--nyh-transition); }
.nyh-tag:hover { background: var(--nyh-coral-light); color: var(--nyh-coral); }
.nyh-tag-sm { display: inline-block; padding: 3px 10px; background: rgba(232,69,107,0.9); color: var(--nyh-white); border-radius: 4px; font-size: 0.75rem; font-weight: 600; }

/* 侧边栏 */
.nyh-video-sidebar h3 { font-size: 1.1rem; margin-bottom: 16px; padding-bottom: 12px; border-bottom: 2px solid var(--nyh-coral); }
.nyh-sidebar-videos { display: flex; flex-direction: column; gap: 16px; }
.nyh-sidebar-video { display: flex; gap: 12px; padding: 10px; border-radius: var(--nyh-radius-sm); transition: var(--nyh-transition); }
.nyh-sidebar-video:hover { background: var(--nyh-gray-50); }
.nyh-sidebar-video img { width: 140px; height: 80px; object-fit: cover; border-radius: 6px; flex-shrink: 0; }
.nyh-sidebar-video h4 { font-size: 0.9rem; color: var(--nyh-navy); margin-bottom: 4px; line-height: 1.3; }
.nyh-sidebar-video p { font-size: 0.78rem; color: var(--nyh-gray-500); }

/* ============================================
   影视传媒服务
   ============================================ */
.nyh-service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.nyh-service-card { background: var(--nyh-white); border-radius: var(--nyh-radius); padding: 32px 24px; box-shadow: var(--nyh-shadow); transition: var(--nyh-transition); text-align: center; border-top: 3px solid transparent; }
.nyh-service-card:hover { transform: translateY(-4px); box-shadow: var(--nyh-shadow-lg); border-top-color: var(--nyh-coral); }
.nyh-service-icon { width: 72px; height: 72px; margin: 0 auto 20px; background: var(--nyh-coral-light); border-radius: 50%; display: flex; align-items: center; justify-content: center; }
.nyh-service-card h3 { font-size: 1.1rem; margin-bottom: 10px; }
.nyh-service-card p { font-size: 0.9rem; color: var(--nyh-gray-500); line-height: 1.6; }

/* ============================================
   娱乐专区
   ============================================ */
.nyh-ent-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.nyh-ent-card { background: var(--nyh-white); border-radius: var(--nyh-radius); overflow: hidden; box-shadow: var(--nyh-shadow); transition: var(--nyh-transition); padding: 28px 24px; }
.nyh-ent-card:hover { transform: translateY(-4px); box-shadow: var(--nyh-shadow-lg); }
.nyh-ent-card.nyh-ent-large { grid-column: 1 / -1; position: relative; padding: 0; }
.nyh-ent-card.nyh-ent-large img { width: 100%; height: 340px; object-fit: cover; display: block; }
.nyh-ent-overlay { position: absolute; bottom: 0; left: 0; right: 0; background: linear-gradient(transparent, rgba(26,43,74,0.85)); padding: 30px 24px 24px; color: var(--nyh-white); }
.nyh-ent-overlay h3 { color: var(--nyh-white); font-size: 1.3rem; margin-bottom: 8px; }
.nyh-ent-overlay p { font-size: 0.9rem; opacity: 0.9; margin-bottom: 10px; }
.nyh-ent-icon-box { width: 64px; height: 64px; border-radius: 16px; display: flex; align-items: center; justify-content: center; margin-bottom: 16px; }
.nyh-ent-card h3 { font-size: 1.1rem; margin-bottom: 8px; }
.nyh-ent-card > p { font-size: 0.9rem; color: var(--nyh-gray-500); line-height: 1.6; }

/* ============================================
   AI赋能模块
   ============================================ */
.nyh-ai-wrapper { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items: center; }
.nyh-ai-image { border-radius: var(--nyh-radius); overflow: hidden; box-shadow: var(--nyh-shadow-lg); }
.nyh-ai-image img { width: 100%; height: auto; display: block; }
.nyh-ai-content .nyh-section-title { text-align: left; font-size: 1.8rem; margin-bottom: 12px; }
.nyh-ai-desc { font-size: 1rem; color: var(--nyh-gray-500); margin-bottom: 28px; line-height: 1.7; }
.nyh-ai-features { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-bottom: 28px; }
.nyh-ai-feature { padding: 16px; background: var(--nyh-gray-50); border-radius: var(--nyh-radius-sm); border-left: 3px solid var(--nyh-coral); }
.nyh-ai-feature h4 { font-size: 0.95rem; margin-bottom: 6px; }
.nyh-ai-feature p { font-size: 0.85rem; color: var(--nyh-gray-500); line-height: 1.5; }

/* ============================================
   社区功能
   ============================================ */
.nyh-community-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.nyh-comm-card { background: var(--nyh-white); border-radius: var(--nyh-radius); padding: 32px 20px; box-shadow: var(--nyh-shadow); transition: var(--nyh-transition); text-align: center; }
.nyh-comm-card:hover { transform: translateY(-4px); box-shadow: var(--nyh-shadow-lg); }
.nyh-comm-icon { margin-bottom: 16px; }
.nyh-comm-card h3 { font-size: 1.05rem; margin-bottom: 8px; }
.nyh-comm-card p { font-size: 0.88rem; color: var(--nyh-gray-500); line-height: 1.6; margin-bottom: 12px; }
.nyh-comm-stat { display: inline-block; padding: 4px 12px; background: var(--nyh-coral-light); color: var(--nyh-coral); border-radius: 20px; font-size: 0.78rem; font-weight: 600; }

/* ============================================
   特色模块网格
   ============================================ */
.nyh-feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.nyh-feature-card { background: var(--nyh-white); border-radius: var(--nyh-radius); padding: 32px 24px; box-shadow: var(--nyh-shadow); transition: var(--nyh-transition); text-align: center; border-top: 3px solid transparent; }
.nyh-feature-card:hover { transform: translateY(-4px); box-shadow: var(--nyh-shadow-lg); border-top-color: var(--nyh-coral); }
.nyh-feature-icon { width: 64px; height: 64px; margin: 0 auto 20px; background: var(--nyh-coral-light); border-radius: 50%; display: flex; align-items: center; justify-content: center; }
.nyh-feature-card h3 { font-size: 1.1rem; margin-bottom: 10px; }
.nyh-feature-card p { font-size: 0.9rem; color: var(--nyh-gray-500); line-height: 1.6; }

/* ============================================
   专家团队
   ============================================ */
.nyh-expert-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; }
.nyh-expert-card { background: var(--nyh-white); border-radius: var(--nyh-radius); overflow: hidden; box-shadow: var(--nyh-shadow); transition: var(--nyh-transition); text-align: center; padding-bottom: 24px; }
.nyh-expert-card:hover { transform: translateY(-4px); box-shadow: var(--nyh-shadow-lg); }
.nyh-expert-card img, .nyh-expert-avatar { width: 100%; aspect-ratio: 1; object-fit: cover; }
.nyh-expert-card h3 { font-size: 1.15rem; margin: 16px 0 4px; }
.nyh-expert-role { color: var(--nyh-coral); font-size: 0.9rem; font-weight: 500; margin-bottom: 12px; }
.nyh-expert-desc { padding: 0 20px; font-size: 0.85rem; color: var(--nyh-gray-500); line-height: 1.6; }
.nyh-expert-card > p:last-of-type { padding: 0 20px; font-size: 0.85rem; color: var(--nyh-gray-500); line-height: 1.6; }
.nyh-expert-tags { padding: 0 16px; margin: 12px 0; display: flex; flex-wrap: wrap; justify-content: center; gap: 6px; }
.nyh-expert-tags span { display: inline-block; padding: 3px 10px; background: var(--nyh-gray-100); color: var(--nyh-gray-700); border-radius: 20px; font-size: 0.75rem; }
.nyh-expert-actions { padding: 0 16px; display: flex; gap: 8px; justify-content: center; margin-top: 12px; }

/* ============================================
   合作伙伴
   ============================================ */
.nyh-partner-wall { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.nyh-partner-item { background: var(--nyh-gray-50); border-radius: var(--nyh-radius-sm); padding: 24px; text-align: center; font-size: 1rem; font-weight: 600; color: var(--nyh-gray-700); transition: var(--nyh-transition); border: 1px solid var(--nyh-gray-200); }
.nyh-partner-item:hover { border-color: var(--nyh-coral); color: var(--nyh-coral); background: var(--nyh-coral-light); }

/* ============================================
   加入指南
   ============================================ */
.nyh-howto-steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.nyh-howto-step { text-align: center; padding: 28px 20px; background: var(--nyh-white); border-radius: var(--nyh-radius); box-shadow: var(--nyh-shadow); transition: var(--nyh-transition); }
.nyh-howto-step:hover { transform: translateY(-4px); box-shadow: var(--nyh-shadow-lg); }
.nyh-step-num { display: inline-block; font-size: 2rem; font-weight: 800; color: var(--nyh-coral); margin-bottom: 12px; }
.nyh-howto-step h3 { font-size: 1.05rem; margin-bottom: 10px; }
.nyh-howto-step p { font-size: 0.88rem; color: var(--nyh-gray-500); line-height: 1.6; }

/* ============================================
   统计数据
   ============================================ */
.nyh-stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; margin: 30px 0; }
.nyh-stat-item { text-align: center; padding: 28px 16px; background: var(--nyh-white); border-radius: var(--nyh-radius); box-shadow: var(--nyh-shadow); }
.nyh-stat-num { display: block; font-size: 2.2rem; font-weight: 800; color: var(--nyh-coral); margin-bottom: 6px; }
.nyh-stat-label { font-size: 0.9rem; color: var(--nyh-gray-500); }

/* ============================================
   用户评论
   ============================================ */
.nyh-review-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.nyh-review-card { background: var(--nyh-white); border-radius: var(--nyh-radius); padding: 28px; box-shadow: var(--nyh-shadow); }
.nyh-review-stars { color: var(--nyh-gold); font-size: 0.9rem; margin-bottom: 10px; }
.nyh-review-text { font-size: 0.9rem; color: var(--nyh-gray-700); line-height: 1.7; margin-bottom: 14px; }
.nyh-review-author { display: flex; align-items: center; gap: 12px; }
.nyh-review-name { font-weight: 600; font-size: 0.9rem; color: var(--nyh-navy); }
.nyh-review-date { font-size: 0.78rem; color: var(--nyh-gray-500); }

/* ============================================
   FAQ
   ============================================ */
.nyh-faq-list { max-width: 800px; margin: 0 auto; }
.nyh-faq-item { background: var(--nyh-white); border-radius: var(--nyh-radius); margin-bottom: 16px; box-shadow: var(--nyh-shadow); overflow: hidden; }
.nyh-faq-question, .nyh-faq-q { width: 100%; padding: 20px 24px; font-size: 1.05rem; cursor: pointer; display: flex; align-items: center; justify-content: space-between; transition: var(--nyh-transition); background: none; border: none; font-family: var(--nyh-font); color: var(--nyh-gray-900); text-align: left; font-weight: 500; }
.nyh-faq-question::after, .nyh-faq-q::after { content: '+'; font-size: 1.4rem; color: var(--nyh-coral); font-weight: 300; transition: var(--nyh-transition); }
.nyh-faq-item.open .nyh-faq-question::after, .nyh-faq-item.open .nyh-faq-q::after { content: '\2212'; }
.nyh-faq-question:hover, .nyh-faq-q:hover { color: var(--nyh-coral); }
.nyh-faq-question svg { display: none; }
.nyh-faq-answer, .nyh-faq-a { padding: 0 24px; max-height: 0; overflow: hidden; transition: max-height 0.4s ease, padding 0.4s ease; }
.nyh-faq-item.open .nyh-faq-answer, .nyh-faq-item.open .nyh-faq-a { max-height: 300px; padding: 0 24px 20px; }
.nyh-faq-answer p, .nyh-faq-a p { font-size: 0.92rem; color: var(--nyh-gray-700); line-height: 1.7; }

/* ============================================
   联系区域（首页）
   ============================================ */
.nyh-contact .nyh-contact-grid { display: grid; grid-template-columns: 1.5fr 1fr; gap: 50px; align-items: start; }
.nyh-contact .nyh-contact-info h3 { font-size: 1.3rem; margin-bottom: 16px; color: var(--nyh-coral); }
.nyh-contact .nyh-contact-info h4 { font-size: 1.1rem; margin: 20px 0 12px; color: var(--nyh-navy); }
.nyh-contact .nyh-contact-item { margin-bottom: 10px; font-size: 0.92rem; color: var(--nyh-gray-700); }
.nyh-contact .nyh-contact-item strong { color: var(--nyh-navy); }
.nyh-contact .nyh-contact-qrcodes { display: flex; gap: 24px; }
.nyh-contact .nyh-qrcode-item { text-align: center; }
.nyh-contact .nyh-qrcode-item img { border-radius: var(--nyh-radius-sm); box-shadow: var(--nyh-shadow); }
.nyh-contact .nyh-qrcode-item p { font-size: 0.82rem; color: var(--nyh-gray-500); margin-top: 8px; }

/* ============================================
   社交分享
   ============================================ */
.nyh-share-inner { text-align: center; padding: 40px 0; }
.nyh-share-inner h3 { font-size: 1.3rem; margin-bottom: 20px; }
.nyh-share-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.nyh-share-btn { display: flex; align-items: center; gap: 8px; padding: 10px 20px; border-radius: var(--nyh-radius-sm); font-size: 0.9rem; font-weight: 500; transition: var(--nyh-transition); }
.nyh-share-wechat { background: #07C160; color: var(--nyh-white); }
.nyh-share-weibo { background: #E6162D; color: var(--nyh-white); }
.nyh-share-douyin { background: #111; color: var(--nyh-white); }
.nyh-share-bilibili { background: #00A1D6; color: var(--nyh-white); }
.nyh-share-btn:hover { transform: translateY(-2px); box-shadow: 0 4px 12px rgba(0,0,0,0.2); color: var(--nyh-white); }

/* ============================================
   关于页面
   ============================================ */
.nyh-about-hero { border-radius: var(--nyh-radius); overflow: hidden; margin-bottom: 40px; box-shadow: var(--nyh-shadow-lg); }
.nyh-about-hero img { width: 100%; height: 400px; object-fit: cover; }
.nyh-about-content h2 { font-size: 1.6rem; margin: 36px 0 16px; padding-bottom: 10px; border-bottom: 2px solid var(--nyh-coral-light); }
.nyh-about-content p { font-size: 0.95rem; color: var(--nyh-gray-700); margin-bottom: 16px; line-height: 1.8; }
.nyh-about-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; margin: 24px 0; }
.nyh-about-item { background: var(--nyh-gray-50); border-radius: var(--nyh-radius-sm); padding: 24px; border-left: 4px solid var(--nyh-coral); }
.nyh-about-item h3 { font-size: 1.1rem; margin-bottom: 8px; }
.nyh-about-item p { font-size: 0.9rem; color: var(--nyh-gray-500); margin-bottom: 0; }

/* 时间线 */
.nyh-timeline { position: relative; padding-left: 30px; margin: 24px 0; }
.nyh-timeline::before { content: ''; position: absolute; left: 8px; top: 0; bottom: 0; width: 2px; background: var(--nyh-coral-light); }
.nyh-timeline-item { position: relative; margin-bottom: 24px; padding-left: 24px; }
.nyh-timeline-item::before { content: ''; position: absolute; left: -26px; top: 6px; width: 12px; height: 12px; border-radius: 50%; background: var(--nyh-coral); border: 3px solid var(--nyh-coral-light); }
.nyh-timeline-year { display: inline-block; font-size: 1.1rem; font-weight: 700; color: var(--nyh-coral); margin-bottom: 4px; }
.nyh-timeline-item p { font-size: 0.9rem; color: var(--nyh-gray-700); }

/* ============================================
   联系页面
   ============================================ */
.nyh-contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; }
.nyh-contact-item { margin-bottom: 20px; }
.nyh-contact-item h3 { font-size: 1rem; margin-bottom: 6px; color: var(--nyh-coral); }
.nyh-contact-item p { font-size: 0.9rem; color: var(--nyh-gray-700); }
.nyh-contact-qrcodes { display: flex; gap: 20px; margin-top: 16px; }
.nyh-contact-qrcodes div { text-align: center; }
.nyh-contact-qrcodes p { font-size: 0.8rem; color: var(--nyh-gray-500); margin-top: 6px; }
.nyh-contact-form-wrap h2 { font-size: 1.4rem; margin-bottom: 20px; }
.nyh-form-group { margin-bottom: 16px; }
.nyh-form-group label { display: block; font-size: 0.9rem; font-weight: 500; margin-bottom: 6px; color: var(--nyh-navy); }
.nyh-form-group input, .nyh-form-group select, .nyh-form-group textarea { width: 100%; padding: 10px 14px; border: 2px solid var(--nyh-gray-200); border-radius: var(--nyh-radius-sm); font-size: 0.9rem; outline: none; transition: var(--nyh-transition); font-family: var(--nyh-font); }
.nyh-form-group input:focus, .nyh-form-group select:focus, .nyh-form-group textarea:focus { border-color: var(--nyh-coral); }

/* ============================================
   视频列表页
   ============================================ */
.nyh-video-list-hero { text-align: center; padding: 50px 0 30px; }
.nyh-video-list-hero h1 { font-size: 2.2rem; margin-bottom: 12px; }
.nyh-video-list-hero p { font-size: 1.05rem; color: var(--nyh-gray-500); max-width: 600px; margin: 0 auto; }

/* ============================================
   页脚
   ============================================ */
.nyh-footer { background: var(--nyh-navy); color: rgba(255,255,255,0.8); padding: 60px 0 0; }
.nyh-footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.2fr; gap: 40px; }
.nyh-footer-brand p { font-size: 0.85rem; margin-top: 16px; line-height: 1.7; opacity: 0.8; }
.nyh-footer h4 { color: var(--nyh-white); font-size: 1rem; margin-bottom: 16px; padding-bottom: 10px; border-bottom: 2px solid rgba(232,69,107,0.4); }
.nyh-footer-links ul li { margin-bottom: 8px; }
.nyh-footer-links a { color: rgba(255,255,255,0.7); font-size: 0.88rem; transition: var(--nyh-transition); }
.nyh-footer-links a:hover { color: var(--nyh-coral-light); padding-left: 4px; }
.nyh-footer-contact p { font-size: 0.85rem; margin-bottom: 6px; }
.nyh-footer-qrcodes { display: flex; gap: 12px; margin-top: 12px; }
.nyh-footer-qrcodes img { border-radius: 6px; opacity: 0.9; }
.nyh-footer-bottom { margin-top: 40px; padding: 20px 0; border-top: 1px solid rgba(255,255,255,0.1); text-align: center; font-size: 0.82rem; opacity: 0.7; }
.nyh-footer-trust { margin-top: 8px; }
.nyh-footer-trust a { color: rgba(255,255,255,0.5); font-size: 0.78rem; margin: 0 8px; }
.nyh-footer-trust a:hover { color: var(--nyh-coral-light); }

/* ============================================
   CTA 区域
   ============================================ */
.nyh-cta { background: linear-gradient(135deg, var(--nyh-navy) 0%, var(--nyh-navy-light) 100%); color: var(--nyh-white); text-align: center; padding: 70px 0; }
.nyh-cta h2 { font-size: 2rem; color: var(--nyh-white); margin-bottom: 16px; }
.nyh-cta p { font-size: 1.05rem; opacity: 0.85; margin-bottom: 30px; max-width: 600px; margin-left: auto; margin-right: auto; }

/* ============================================
   响应式设计
   ============================================ */
@media (max-width: 1024px) {
    .nyh-video-grid { grid-template-columns: repeat(2, 1fr); }
    .nyh-feature-grid { grid-template-columns: repeat(2, 1fr); }
    .nyh-service-grid { grid-template-columns: repeat(2, 1fr); }
    .nyh-expert-grid { grid-template-columns: repeat(2, 1fr); }
    .nyh-community-grid { grid-template-columns: repeat(2, 1fr); }
    .nyh-howto-steps { grid-template-columns: repeat(2, 1fr); }
    .nyh-partner-wall { grid-template-columns: repeat(2, 1fr); }
    .nyh-footer-grid { grid-template-columns: repeat(2, 1fr); }
    .nyh-video-content { grid-template-columns: 1fr; }
    .nyh-stats-grid { grid-template-columns: repeat(2, 1fr); }
    .nyh-ai-wrapper { grid-template-columns: 1fr; }
    .nyh-ai-content .nyh-section-title { text-align: center; }
    .nyh-contact .nyh-contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .nyh-nav { display: none; }
    .nyh-nav.open { display: block; position: absolute; top: 68px; left: 0; right: 0; background: var(--nyh-white); box-shadow: var(--nyh-shadow-lg); padding: 16px; }
    .nyh-nav.open .nyh-nav-list { flex-direction: column; }
    .nyh-menu-toggle { display: flex; }
    .nyh-hero { min-height: 450px; }
    .nyh-hero-content h1 { font-size: 1.8rem; }
    .nyh-hero-content p { font-size: 0.95rem; }
    .nyh-video-grid { grid-template-columns: 1fr; }
    .nyh-feature-grid { grid-template-columns: 1fr; }
    .nyh-service-grid { grid-template-columns: 1fr; }
    .nyh-review-grid { grid-template-columns: 1fr; }
    .nyh-expert-grid { grid-template-columns: 1fr; }
    .nyh-community-grid { grid-template-columns: 1fr; }
    .nyh-howto-steps { grid-template-columns: 1fr; }
    .nyh-partner-wall { grid-template-columns: repeat(2, 1fr); }
    .nyh-about-grid { grid-template-columns: 1fr; }
    .nyh-contact-grid { grid-template-columns: 1fr; }
    .nyh-ent-grid { grid-template-columns: 1fr; }
    .nyh-footer-grid { grid-template-columns: 1fr; }
    .nyh-stats-grid { grid-template-columns: repeat(2, 1fr); }
    .nyh-section { padding: 40px 0; }
    .nyh-page-title { font-size: 1.6rem; }
    .nyh-section-header h2 { font-size: 1.5rem; }
    .nyh-search-bar { display: block; }
}

@media (max-width: 480px) {
    .nyh-hero-content h1 { font-size: 1.5rem; }
    .nyh-hero-actions { flex-direction: column; }
    .nyh-hero-actions .nyh-btn { width: 100%; }
    .nyh-stat-num { font-size: 1.6rem; }
    .nyh-sidebar-video { flex-direction: column; }
    .nyh-sidebar-video img { width: 100%; height: auto; }
    .nyh-share-buttons { flex-direction: column; align-items: center; }
}

/* ============================================
   动画
   ============================================ */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}
.nyh-animate { opacity: 0; transform: translateY(30px); transition: opacity 0.6s ease, transform 0.6s ease; }
.nyh-animate.visible { opacity: 1; transform: translateY(0); }

/* ============================================
   滚动条美化
   ============================================ */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--nyh-gray-100); }
::-webkit-scrollbar-thumb { background: var(--nyh-gray-300); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--nyh-coral); }