/**
 * 四虎视频 - 动物写真视频社区 原创样式表
 * 域名：cnxeoe.cn
 * 配色：深夜蓝紫 #1A1B3A + 珊瑚橙 #FF6B4A + 暖阳金 #FFD166
 * 百度SEO EEAT优化版
 */

/* ===== 基础重置与变量 ===== */
:root {
    --dy-primary: #1A1B3A;
    --dy-accent: #FF6B4A;
    --dy-gold: #FFD166;
    --dy-bg: #F8F6F1;
    --dy-dark: #12132B;
    --dy-text: #2C2C3E;
    --dy-text-light: #6B6B80;
    --dy-card: #FFFFFF;
    --dy-gray-bg: #EFEEE9;
    --dy-border: #E0DDD6;
    --dy-radius: 16px;
    --dy-radius-sm: 8px;
    --dy-shadow: 0 4px 24px rgba(26,27,58,0.08);
    --dy-shadow-hover: 0 8px 40px rgba(26,27,58,0.15);
    --dy-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html { font-size: 16px; scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    color: var(--dy-text);
    background: var(--dy-bg);
    line-height: 1.7;
    overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--dy-accent); text-decoration: none; transition: var(--dy-transition); }
a:hover { color: #e85a3a; }
ul, ol { list-style: none; }

/* ===== 容器 ===== */
.dy-container { max-width: 1240px; margin: 0 auto; padding: 0 24px; }

/* ===== 顶部公告栏 ===== */
.dy-topbar {
    background: linear-gradient(135deg, var(--dy-primary) 0%, #2a2b5a 100%);
    padding: 8px 0;
    text-align: center;
}
.dy-topbar-text {
    color: rgba(255,255,255,0.85);
    font-size: 13px;
    letter-spacing: 0.5px;
}
.dy-topbar-text strong { color: var(--dy-gold); }
.dy-topbar-text a { color: var(--dy-gold); border-bottom: 1px solid transparent; }
.dy-topbar-text a:hover { border-bottom-color: var(--dy-gold); }

/* ===== 主导航 ===== */
.dy-header {
    background: var(--dy-card);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 16px rgba(26,27,58,0.06);
    transition: var(--dy-transition);
}
.dy-header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}
.dy-logo img { height: 48px; width: auto; }
.dy-nav-list {
    display: flex;
    gap: 4px;
}
.dy-nav-list li a {
    display: block;
    padding: 8px 16px;
    color: var(--dy-text);
    font-size: 15px;
    font-weight: 500;
    border-radius: var(--dy-radius-sm);
    transition: var(--dy-transition);
}
.dy-nav-list li a:hover,
.dy-nav-list li a.active {
    color: var(--dy-accent);
    background: rgba(255,107,74,0.08);
}
.dy-header-actions { display: flex; align-items: center; gap: 12px; }

/* 搜索框 */
.dy-search-box { position: relative; }
.dy-search-toggle {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--dy-text);
    padding: 8px;
    border-radius: 50%;
    transition: var(--dy-transition);
}
.dy-search-toggle:hover { background: var(--dy-gray-bg); color: var(--dy-accent); }
.dy-search-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    width: 320px;
    background: var(--dy-card);
    border-radius: var(--dy-radius);
    box-shadow: var(--dy-shadow-hover);
    padding: 16px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: var(--dy-transition);
}
.dy-search-dropdown.active { opacity: 1; visibility: visible; transform: translateY(4px); }
.dy-search-form { display: flex; gap: 8px; }
.dy-search-input {
    flex: 1;
    padding: 10px 16px;
    border: 2px solid var(--dy-border);
    border-radius: var(--dy-radius-sm);
    font-size: 14px;
    outline: none;
    transition: var(--dy-transition);
}
.dy-search-input:focus { border-color: var(--dy-accent); }
.dy-search-btn {
    padding: 10px 20px;
    background: var(--dy-accent);
    color: #fff;
    border: none;
    border-radius: var(--dy-radius-sm);
    font-size: 14px;
    cursor: pointer;
    transition: var(--dy-transition);
}
.dy-search-btn:hover { background: #e85a3a; }

/* 汉堡菜单 */
.dy-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}
.dy-menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--dy-text);
    border-radius: 2px;
    transition: var(--dy-transition);
}

/* ===== 面包屑 ===== */
.dy-breadcrumb {
    background: var(--dy-gray-bg);
    padding: 12px 0;
    border-bottom: 1px solid var(--dy-border);
}
.dy-breadcrumb-list {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    font-size: 13px;
    color: var(--dy-text-light);
}
.dy-breadcrumb-list li::after { content: " / "; margin: 0 4px; }
.dy-breadcrumb-list li:last-child::after { content: ""; }
.dy-breadcrumb-list a { color: var(--dy-text-light); }
.dy-breadcrumb-list a:hover { color: var(--dy-accent); }

/* ===== Hero Banner ===== */
.dy-hero {
    position: relative;
    min-height: 600px;
    display: flex;
    align-items: center;
    overflow: hidden;
}
.dy-hero-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}
.dy-hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(26,27,58,0.88) 0%, rgba(18,19,43,0.72) 50%, rgba(26,27,58,0.55) 100%);
}
.dy-hero-content {
    position: relative;
    z-index: 2;
    display: flex;
    align-items: center;
    gap: 48px;
    padding: 80px 24px;
}
.dy-hero-text { flex: 1; }
.dy-hero-title {
    font-size: 42px;
    font-weight: 800;
    color: #fff;
    line-height: 1.2;
    margin-bottom: 16px;
}
.dy-hero-subtitle {
    font-size: 22px;
    color: var(--dy-gold);
    font-weight: 500;
    margin-bottom: 20px;
}
.dy-hero-desc {
    font-size: 16px;
    color: rgba(255,255,255,0.8);
    line-height: 1.8;
    margin-bottom: 16px;
    max-width: 560px;
}
.dy-hero-stats-mini {
    display: flex;
    gap: 12px;
    font-size: 13px;
    color: var(--dy-gold);
    margin-bottom: 24px;
    padding: 8px 16px;
    background: rgba(255,209,102,0.1);
    border-radius: var(--dy-radius-sm);
    border: 1px solid rgba(255,209,102,0.2);
    width: fit-content;
}
.dy-hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.dy-hero-video-card { flex-shrink: 0; width: 420px; }

/* ===== 按钮 ===== */
.dy-btn {
    display: inline-block;
    padding: 14px 32px;
    font-size: 15px;
    font-weight: 600;
    border-radius: var(--dy-radius-sm);
    transition: var(--dy-transition);
    cursor: pointer;
    text-align: center;
}
.dy-btn-primary {
    background: var(--dy-accent);
    color: #fff;
}
.dy-btn-primary:hover { background: #e85a3a; color: #fff; transform: translateY(-2px); box-shadow: 0 4px 16px rgba(255,107,74,0.4); }
.dy-btn-outline {
    background: transparent;
    color: #fff;
    border: 2px solid rgba(255,255,255,0.5);
}
.dy-btn-outline:hover { border-color: #fff; color: #fff; background: rgba(255,255,255,0.1); }
.dy-btn-secondary {
    background: var(--dy-primary);
    color: #fff;
}
.dy-btn-secondary:hover { background: #2a2b5a; color: #fff; transform: translateY(-2px); }
.dy-btn-small { padding: 8px 16px; font-size: 13px; }
.dy-btn-outline-sm {
    background: transparent;
    color: var(--dy-accent);
    border: 1px solid var(--dy-accent);
}
.dy-btn-outline-sm:hover { background: var(--dy-accent); color: #fff; }

/* ===== 视频卡片 ===== */
.dy-video-card {
    position: relative;
    border-radius: var(--dy-radius);
    overflow: hidden;
    background: var(--dy-card);
    box-shadow: var(--dy-shadow);
    transition: var(--dy-transition);
    cursor: pointer;
}
.dy-video-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--dy-shadow-hover);
}
.dy-video-card img {
    width: 100%;
    aspect-ratio: 16/9;
    object-fit: cover;
    transition: var(--dy-transition);
}
.dy-video-card:hover img { transform: scale(1.05); }
.dy-video-play-btn {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.8);
    opacity: 0;
    transition: var(--dy-transition);
    z-index: 3;
}
.dy-video-card:hover .dy-video-play-btn { opacity: 1; transform: translate(-50%, -50%) scale(1); }
.dy-video-duration {
    position: absolute;
    bottom: 68px;
    right: 8px;
    background: rgba(0,0,0,0.75);
    color: #fff;
    font-size: 12px;
    padding: 2px 8px;
    border-radius: 4px;
    font-weight: 600;
    z-index: 2;
}
.dy-video-meta {
    position: absolute;
    bottom: 56px;
    left: 8px;
    display: flex;
    gap: 12px;
    font-size: 12px;
    color: #fff;
    text-shadow: 0 1px 4px rgba(0,0,0,0.6);
}
.dy-video-info { padding: 16px; }
.dy-video-info h3 { font-size: 15px; font-weight: 600; margin-bottom: 8px; color: var(--dy-text); line-height: 1.4; }
.dy-video-stats { display: flex; gap: 12px; font-size: 12px; color: var(--dy-text-light); margin-bottom: 8px; }
.dy-video-tags { display: flex; gap: 6px; flex-wrap: wrap; }
.dy-video-tags span {
    padding: 2px 10px;
    background: rgba(255,107,74,0.08);
    color: var(--dy-accent);
    font-size: 11px;
    border-radius: 20px;
}

/* ===== 更新时效标识 ===== */
.dy-update-badge {
    display: inline-block;
    margin-top: 12px;
    padding: 6px 18px;
    background: linear-gradient(135deg, var(--dy-accent), #ff8a65);
    color: #fff;
    font-size: 13px;
    font-weight: 600;
    border-radius: 20px;
    letter-spacing: 0.5px;
}

/* ===== EEAT认证标识 ===== */
.dy-eeat-badge {
    display: inline-block;
    margin-top: 12px;
    padding: 6px 18px;
    background: linear-gradient(135deg, #2e7d32, #43a047);
    color: #fff;
    font-size: 13px;
    font-weight: 600;
    border-radius: 20px;
    letter-spacing: 0.5px;
}

/* ===== 统计数据 ===== */
.dy-stats {
    background: var(--dy-primary);
    padding: 40px 0;
}
.dy-stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    text-align: center;
}
.dy-stat-num {
    display: block;
    font-size: 36px;
    font-weight: 800;
    color: var(--dy-gold);
    margin-bottom: 4px;
}
.dy-stat-label { font-size: 14px; color: rgba(255,255,255,0.7); }

/* ===== 通用区块 ===== */
.dy-section { padding: 80px 0; }
.dy-section:nth-child(even) { background: var(--dy-gray-bg); }
.dy-section-header { text-align: center; margin-bottom: 48px; }
.dy-section-title {
    font-size: 32px;
    font-weight: 800;
    color: var(--dy-primary);
    margin-bottom: 12px;
}
.dy-highlight { color: var(--dy-accent); }
.dy-section-desc {
    font-size: 16px;
    color: var(--dy-text-light);
    max-width: 680px;
    margin: 0 auto;
    line-height: 1.8;
}
.dy-section-more { text-align: center; margin-top: 40px; }

/* ===== 视频网格 ===== */
.dy-video-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

/* ===== 动物传媒 ===== */
.dy-media-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.dy-media-card {
    background: var(--dy-card);
    padding: 32px;
    border-radius: var(--dy-radius);
    box-shadow: var(--dy-shadow);
    transition: var(--dy-transition);
    text-align: center;
}
.dy-media-card:hover { transform: translateY(-4px); box-shadow: var(--dy-shadow-hover); }
.dy-media-icon { font-size: 48px; margin-bottom: 16px; }
.dy-media-card h3 { font-size: 18px; font-weight: 700; color: var(--dy-primary); margin-bottom: 12px; }
.dy-media-card p { font-size: 14px; color: var(--dy-text-light); line-height: 1.7; }

/* ===== AI赋能 ===== */
.dy-ai-grid { display: flex; flex-direction: column; gap: 48px; }
.dy-ai-card {
    display: flex;
    align-items: center;
    gap: 48px;
    background: var(--dy-card);
    border-radius: var(--dy-radius);
    overflow: hidden;
    box-shadow: var(--dy-shadow);
}
.dy-ai-reverse { flex-direction: row-reverse; }
.dy-ai-visual { flex: 1; min-width: 0; }
.dy-ai-visual img { width: 100%; height: 300px; object-fit: cover; }
.dy-ai-text { flex: 1; padding: 32px; }
.dy-ai-text h3 { font-size: 22px; font-weight: 700; color: var(--dy-primary); margin-bottom: 16px; }
.dy-ai-text p { font-size: 15px; color: var(--dy-text-light); line-height: 1.8; }

/* ===== 专家展示 ===== */
.dy-experts-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.dy-expert-card {
    background: var(--dy-card);
    padding: 32px 24px;
    border-radius: var(--dy-radius);
    box-shadow: var(--dy-shadow);
    text-align: center;
    transition: var(--dy-transition);
}
.dy-expert-card:hover { transform: translateY(-4px); box-shadow: var(--dy-shadow-hover); }
.dy-expert-avatar { font-size: 56px; margin-bottom: 12px; }
.dy-expert-card h3 { font-size: 20px; font-weight: 700; color: var(--dy-primary); margin-bottom: 4px; }
.dy-expert-role { font-size: 14px; color: var(--dy-accent); font-weight: 600; margin-bottom: 4px; }
.dy-expert-credentials { font-size: 12px; color: var(--dy-text-light); margin-bottom: 12px; padding: 4px 12px; background: var(--dy-gray-bg); border-radius: 20px; display: inline-block; }
.dy-expert-bio { font-size: 13px; color: var(--dy-text-light); line-height: 1.7; margin-bottom: 12px; }
.dy-expert-awards { font-size: 12px; color: var(--dy-gold); background: rgba(255,209,102,0.1); padding: 6px 12px; border-radius: var(--dy-radius-sm); margin-bottom: 16px; }
.dy-expert-actions { display: flex; gap: 8px; justify-content: center; }

/* ===== 合作伙伴 ===== */
.dy-partners-wall {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}
.dy-partner-item {
    background: var(--dy-card);
    padding: 24px;
    border-radius: var(--dy-radius-sm);
    text-align: center;
    font-size: 14px;
    font-weight: 600;
    color: var(--dy-primary);
    box-shadow: var(--dy-shadow);
    transition: var(--dy-transition);
    border: 2px solid transparent;
}
.dy-partner-item:hover { border-color: var(--dy-accent); transform: translateY(-2px); }

/* ===== How-To步骤 ===== */
.dy-howto-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.dy-howto-step {
    background: var(--dy-card);
    padding: 32px 24px;
    border-radius: var(--dy-radius);
    box-shadow: var(--dy-shadow);
    text-align: center;
    position: relative;
}
.dy-step-num {
    font-size: 48px;
    font-weight: 900;
    color: rgba(255,107,74,0.15);
    line-height: 1;
    margin-bottom: 12px;
}
.dy-howto-step h3 { font-size: 17px; font-weight: 700; color: var(--dy-primary); margin-bottom: 12px; }
.dy-howto-step p { font-size: 14px; color: var(--dy-text-light); line-height: 1.7; }

/* ===== FAQ ===== */
.dy-faq-list { max-width: 800px; margin: 0 auto; }
.dy-faq-item {
    background: var(--dy-card);
    border-radius: var(--dy-radius-sm);
    margin-bottom: 12px;
    box-shadow: var(--dy-shadow);
    overflow: hidden;
}
.dy-faq-question {
    padding: 20px 24px;
    font-size: 16px;
    font-weight: 600;
    color: var(--dy-primary);
    cursor: pointer;
    position: relative;
    padding-right: 48px;
    transition: var(--dy-transition);
}
.dy-faq-question::after {
    content: "+";
    position: absolute;
    right: 24px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 24px;
    color: var(--dy-accent);
    transition: var(--dy-transition);
}
.dy-faq-question.open::after { content: "\2212"; }
.dy-faq-question:hover { color: var(--dy-accent); }
.dy-faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease;
}
.dy-faq-answer p { padding: 0 24px 20px; font-size: 14px; color: var(--dy-text-light); line-height: 1.8; }

/* ===== 用户评论 ===== */
.dy-reviews-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.dy-review-card {
    background: var(--dy-card);
    padding: 28px;
    border-radius: var(--dy-radius);
    box-shadow: var(--dy-shadow);
    transition: var(--dy-transition);
    border-left: 4px solid var(--dy-accent);
}
.dy-review-card:hover { transform: translateY(-4px); box-shadow: var(--dy-shadow-hover); }
.dy-review-stars { color: var(--dy-gold); font-size: 18px; margin-bottom: 12px; }
.dy-review-text { font-size: 14px; color: var(--dy-text); line-height: 1.8; margin-bottom: 16px; font-style: italic; }
.dy-review-author { display: flex; justify-content: space-between; font-size: 13px; }
.dy-review-name { color: var(--dy-primary); font-weight: 600; }
.dy-review-date { color: var(--dy-text-light); }

/* ===== 联系信息 ===== */
.dy-contact-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}
.dy-contact-card {
    background: var(--dy-card);
    padding: 32px;
    border-radius: var(--dy-radius);
    box-shadow: var(--dy-shadow);
}
.dy-contact-card h3 { font-size: 20px; font-weight: 700; color: var(--dy-primary); margin-bottom: 16px; }
.dy-contact-card p { font-size: 14px; color: var(--dy-text-light); margin-bottom: 8px; line-height: 1.6; }

/* ===== 社交分享 ===== */
.dy-share-bar {
    background: var(--dy-primary);
    padding: 32px 0;
    text-align: center;
}
.dy-share-title { color: #fff; font-size: 18px; margin-bottom: 16px; }
.dy-share-buttons { display: flex; justify-content: center; gap: 12px; flex-wrap: wrap; }
.dy-share-btn {
    padding: 10px 24px;
    border-radius: 24px;
    font-size: 14px;
    font-weight: 600;
    color: #fff;
    transition: var(--dy-transition);
}
.dy-share-wechat { background: #07C160; }
.dy-share-weibo { background: #E6162D; }
.dy-share-douyin { background: #161823; border: 1px solid #444; }
.dy-share-bilibili { background: #00A1D6; }
.dy-share-qq { background: #12B7F5; }
.dy-share-btn:hover { transform: translateY(-2px); color: #fff; opacity: 0.9; }

/* ===== 页脚 ===== */
.dy-footer {
    background: var(--dy-dark);
    padding: 60px 0 0;
    color: rgba(255,255,255,0.7);
}
.dy-footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 48px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}
.dy-footer-logo { height: 40px; width: auto; margin-bottom: 16px; }
.dy-footer-desc { font-size: 13px; line-height: 1.8; margin-bottom: 20px; }
.dy-footer-qrcodes { display: flex; gap: 20px; }
.dy-qrcode-item { text-align: center; }
.dy-qrcode-item img { width: 120px; height: 120px; border-radius: var(--dy-radius-sm); margin-bottom: 6px; }
.dy-qrcode-item span { font-size: 12px; color: rgba(255,255,255,0.5); }
.dy-footer-links h4,
.dy-footer-contact h4 {
    font-size: 16px;
    color: #fff;
    margin-bottom: 16px;
    font-weight: 700;
}
.dy-footer-links ul li,
.dy-footer-contact ul li {
    margin-bottom: 8px;
    font-size: 13px;
}
.dy-footer-links a { color: rgba(255,255,255,0.6); }
.dy-footer-links a:hover { color: var(--dy-accent); }

/* 友情链接 */
.dy-footer-friendlinks {
    padding: 24px 0;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}
.dy-footer-friendlinks h4 {
    font-size: 14px;
    color: rgba(255,255,255,0.6);
    margin-bottom: 12px;
    font-weight: 600;
}
.dy-friendlinks-list {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
}
.dy-friendlinks-list a {
    color: rgba(255,255,255,0.4);
    font-size: 13px;
    transition: var(--dy-transition);
}
.dy-friendlinks-list a:hover { color: var(--dy-accent); }

/* 资质信息 */
.dy-footer-credentials {
    padding: 16px 0;
    text-align: center;
    font-size: 12px;
    color: rgba(255,255,255,0.35);
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.dy-footer-bottom {
    padding: 20px 0;
    text-align: center;
    font-size: 13px;
    color: rgba(255,255,255,0.4);
}
.dy-footer-bottom a { color: rgba(255,255,255,0.4); }
.dy-footer-bottom a:hover { color: var(--dy-accent); }

/* ===== 返回顶部 ===== */
.dy-back-top {
    position: fixed;
    bottom: 40px;
    right: 24px;
    width: 48px;
    height: 48px;
    background: var(--dy-accent);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--dy-transition);
    box-shadow: 0 4px 16px rgba(255,107,74,0.4);
    z-index: 999;
}
.dy-back-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}
.dy-back-top:hover {
    background: #e85a3a;
    transform: translateY(-4px);
}

/* ===== 内页通用 ===== */
.dy-page-hero {
    background: linear-gradient(135deg, var(--dy-primary) 0%, #2a2b5a 100%);
    padding: 60px 0;
    text-align: center;
}
.dy-page-hero h1 { font-size: 36px; font-weight: 800; color: #fff; margin-bottom: 12px; }
.dy-page-hero p { font-size: 16px; color: rgba(255,255,255,0.7); max-width: 600px; margin: 0 auto; }
.dy-page-content { padding: 60px 0; }
.dy-page-content h2 { font-size: 26px; font-weight: 700; color: var(--dy-primary); margin-bottom: 16px; margin-top: 40px; }
.dy-page-content h2:first-child { margin-top: 0; }
.dy-page-content h3 { font-size: 20px; font-weight: 600; color: var(--dy-text); margin-bottom: 12px; margin-top: 24px; }
.dy-page-content p { font-size: 15px; color: var(--dy-text-light); line-height: 1.8; margin-bottom: 16px; }
.dy-content-image {
    width: 100%;
    border-radius: var(--dy-radius);
    margin: 24px 0;
    box-shadow: var(--dy-shadow);
}

/* ===== 隐私政策页面 ===== */
.dy-privacy-content h3 { margin-top: 32px; }
.dy-privacy-content p { text-indent: 2em; }

/* ===== 404页面 ===== */
.dy-404-section { text-align: center; padding: 120px 0; }
.dy-404-title { font-size: 120px; font-weight: 900; color: var(--dy-accent); line-height: 1; margin-bottom: 16px; }
.dy-404-text { font-size: 20px; color: var(--dy-text-light); margin-bottom: 32px; }

/* ===== 联系表单 ===== */
.dy-form-group { margin-bottom: 20px; }
.dy-form-group label { display: block; font-size: 14px; font-weight: 600; color: var(--dy-text); margin-bottom: 6px; }
.dy-form-input,
.dy-form-textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--dy-border);
    border-radius: var(--dy-radius-sm);
    font-size: 14px;
    font-family: inherit;
    outline: none;
    transition: var(--dy-transition);
}
.dy-form-input:focus,
.dy-form-textarea:focus { border-color: var(--dy-accent); }
.dy-form-textarea { resize: vertical; min-height: 120px; }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
    .dy-video-grid { grid-template-columns: repeat(3, 1fr); }
    .dy-experts-grid { grid-template-columns: repeat(2, 1fr); }
    .dy-howto-steps { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .dy-nav { display: none; }
    .dy-nav.active {
        display: block;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--dy-card);
        box-shadow: var(--dy-shadow-hover);
        padding: 16px;
    }
    .dy-nav.active .dy-nav-list { flex-direction: column; }
    .dy-menu-toggle { display: flex; }
    .dy-hero-content { flex-direction: column; padding: 48px 24px; }
    .dy-hero-title { font-size: 28px; }
    .dy-hero-subtitle { font-size: 18px; }
    .dy-hero-video-card { width: 100%; }
    .dy-video-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
    .dy-media-grid { grid-template-columns: 1fr; }
    .dy-ai-card, .dy-ai-reverse { flex-direction: column; }
    .dy-experts-grid { grid-template-columns: 1fr; }
    .dy-stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
    .dy-stat-num { font-size: 28px; }
    .dy-partners-wall { grid-template-columns: repeat(2, 1fr); }
    .dy-howto-steps { grid-template-columns: 1fr; }
    .dy-reviews-grid { grid-template-columns: 1fr; }
    .dy-contact-grid { grid-template-columns: 1fr; }
    .dy-footer-grid { grid-template-columns: 1fr; gap: 32px; }
    .dy-section { padding: 48px 0; }
    .dy-section-title { font-size: 24px; }
    .dy-page-hero h1 { font-size: 26px; }
    .dy-hero-stats-mini { flex-wrap: wrap; }
}

@media (max-width: 480px) {
    .dy-video-grid { grid-template-columns: 1fr; }
    .dy-hero { min-height: 500px; }
    .dy-hero-title { font-size: 24px; }
    .dy-search-dropdown { width: 280px; }
    .dy-back-top { bottom: 24px; right: 16px; width: 40px; height: 40px; }
}