/* ============================================
   母狗 - 全站样式表
   品牌：母狗 | 域名：893178.cn
   定位：影视传媒公司 + 视频社区
   ============================================ */

/* === 基础重置与变量 === */
:root {
    --xl-primary: #1a6fc4;
    --xl-primary-dark: #0d4a8a;
    --xl-primary-light: #3498db;
    --xl-accent: #ff6b35;
    --xl-accent-light: #ff8c5a;
    --xl-bg-dark: #0a1628;
    --xl-bg-section: #f0f4f8;
    --xl-bg-card: #ffffff;
    --xl-text-main: #2c3e50;
    --xl-text-light: #7f8c8d;
    --xl-text-white: #ffffff;
    --xl-border: #e1e8ed;
    --xl-shadow: 0 4px 20px rgba(26, 111, 196, 0.12);
    --xl-shadow-hover: 0 8px 32px rgba(26, 111, 196, 0.22);
    --xl-radius: 12px;
    --xl-radius-sm: 8px;
    --xl-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
    font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
    color: var(--xl-text-main);
    background: #fff;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

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

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

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

ul, ol {
    list-style: none;
}

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

/* === 顶部导航栏 === */
.xl-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(10, 22, 40, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(26, 111, 196, 0.2);
    transition: var(--xl-transition);
}

.xl-header.scrolled {
    background: rgba(10, 22, 40, 0.98);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

.xl-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 68px;
}

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

.xl-logo img {
    height: 40px;
    width: auto;
}

.xl-logo span {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--xl-text-white);
    letter-spacing: 1px;
}

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

.xl-nav a {
    color: rgba(255, 255, 255, 0.85);
    padding: 8px 14px;
    border-radius: var(--xl-radius-sm);
    font-size: 0.92rem;
    font-weight: 500;
    transition: var(--xl-transition);
    white-space: nowrap;
}

.xl-nav a:hover,
.xl-nav a.active {
    color: #fff;
    background: rgba(26, 111, 196, 0.3);
}

.xl-search-box {
    position: relative;
    margin-left: 12px;
}

.xl-search-box input {
    width: 180px;
    padding: 7px 36px 7px 14px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.08);
    color: #fff;
    font-size: 0.85rem;
    outline: none;
    transition: var(--xl-transition);
}

.xl-search-box input::placeholder {
    color: rgba(255, 255, 255, 0.5);
}

.xl-search-box input:focus {
    width: 220px;
    border-color: var(--xl-primary-light);
    background: rgba(255, 255, 255, 0.12);
}

.xl-search-box button {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: rgba(255, 255, 255, 0.6);
    cursor: pointer;
    font-size: 0.9rem;
}

.xl-mobile-toggle {
    display: none;
    background: none;
    border: none;
    color: #fff;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 8px;
}

/* === Banner 区域 === */
.xl-banner {
    position: relative;
    width: 100%;
    min-height: 520px;
    margin-top: 68px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.xl-banner-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 1;
}

.xl-banner-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(10, 22, 40, 0.85) 0%, rgba(26, 111, 196, 0.6) 50%, rgba(10, 22, 40, 0.8) 100%);
    z-index: 2;
}

.xl-banner-content {
    position: relative;
    z-index: 3;
    text-align: center;
    color: #fff;
    padding: 60px 20px;
    max-width: 800px;
}

.xl-banner-content h1 {
    font-size: 2.8rem;
    font-weight: 800;
    margin-bottom: 16px;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
    line-height: 1.3;
}

.xl-banner-content h1 em {
    font-style: normal;
    color: var(--xl-accent);
}

.xl-banner-content p {
    font-size: 1.15rem;
    line-height: 1.8;
    opacity: 0.92;
    margin-bottom: 28px;
}

.xl-banner-tags {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
    margin-top: 20px;
}

.xl-banner-tags span {
    padding: 6px 16px;
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.25);
    border-radius: 20px;
    font-size: 0.88rem;
    color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(4px);
}

.xl-btn {
    display: inline-block;
    padding: 12px 32px;
    border-radius: 30px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--xl-transition);
    border: none;
    text-align: center;
}

.xl-btn-primary {
    background: linear-gradient(135deg, var(--xl-accent), var(--xl-accent-light));
    color: #fff;
    box-shadow: 0 4px 16px rgba(255, 107, 53, 0.35);
}

.xl-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(255, 107, 53, 0.5);
    color: #fff;
}

.xl-btn-outline {
    background: transparent;
    color: #fff;
    border: 2px solid rgba(255, 255, 255, 0.5);
}

.xl-btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: #fff;
    color: #fff;
}

/* === 通用区块标题 === */
.xl-section {
    padding: 70px 0;
}

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

.xl-section-dark {
    background: var(--xl-bg-dark);
    color: var(--xl-text-white);
}

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

.xl-section-title h2 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--xl-text-main);
    margin-bottom: 12px;
    position: relative;
    display: inline-block;
}

.xl-section-dark .xl-section-title h2 {
    color: #fff;
}

.xl-section-title h2::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--xl-primary), var(--xl-accent));
    border-radius: 2px;
}

.xl-section-title p {
    color: var(--xl-text-light);
    font-size: 1rem;
    margin-top: 16px;
}

.xl-section-dark .xl-section-title p {
    color: rgba(255, 255, 255, 0.7);
}

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

.xl-video-card {
    background: var(--xl-bg-card);
    border-radius: var(--xl-radius);
    overflow: hidden;
    box-shadow: var(--xl-shadow);
    transition: var(--xl-transition);
    cursor: pointer;
}

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

.xl-video-thumb {
    position: relative;
    width: 100%;
    padding-top: 56.25%;
    overflow: hidden;
}

.xl-video-thumb img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.xl-video-card:hover .xl-video-thumb img {
    transform: scale(1.06);
}

.xl-video-play {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0);
    width: 56px;
    height: 56px;
    background: rgba(26, 111, 196, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--xl-transition);
    z-index: 5;
}

.xl-video-play::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: 3px;
}

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

.xl-video-duration {
    position: absolute;
    bottom: 8px;
    right: 8px;
    background: rgba(0, 0, 0, 0.75);
    color: #fff;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.78rem;
    z-index: 5;
}

.xl-video-info {
    padding: 14px 16px;
}

.xl-video-info h3 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--xl-text-main);
    margin-bottom: 8px;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.xl-video-meta {
    display: flex;
    align-items: center;
    gap: 14px;
    font-size: 0.8rem;
    color: var(--xl-text-light);
}

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

/* === 模块卡片（反差传媒/娱乐/AI/社区） === */
.xl-module-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.xl-module-card {
    background: var(--xl-bg-card);
    border-radius: var(--xl-radius);
    overflow: hidden;
    box-shadow: var(--xl-shadow);
    transition: var(--xl-transition);
    border: 1px solid var(--xl-border);
}

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

.xl-module-card-img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.xl-module-card-body {
    padding: 22px;
}

.xl-module-card-body h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--xl-text-main);
}

.xl-module-card-body p {
    font-size: 0.9rem;
    color: var(--xl-text-light);
    line-height: 1.7;
    margin-bottom: 14px;
}

.xl-module-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.xl-module-tags span {
    padding: 3px 10px;
    background: rgba(26, 111, 196, 0.08);
    color: var(--xl-primary);
    border-radius: 12px;
    font-size: 0.78rem;
    font-weight: 500;
}

/* === 专家展示 === */
.xl-expert-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.xl-expert-card {
    background: var(--xl-bg-card);
    border-radius: var(--xl-radius);
    padding: 30px 24px;
    text-align: center;
    box-shadow: var(--xl-shadow);
    transition: var(--xl-transition);
    border: 1px solid var(--xl-border);
}

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

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

.xl-expert-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.xl-expert-card .xl-expert-role {
    color: var(--xl-primary);
    font-size: 0.88rem;
    font-weight: 500;
    margin-bottom: 12px;
}

.xl-expert-card p {
    font-size: 0.85rem;
    color: var(--xl-text-light);
    line-height: 1.6;
    margin-bottom: 16px;
}

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

.xl-expert-actions a {
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.82rem;
    font-weight: 500;
    border: 1px solid var(--xl-primary);
    color: var(--xl-primary);
    transition: var(--xl-transition);
}

.xl-expert-actions a:hover {
    background: var(--xl-primary);
    color: #fff;
}

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

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

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

.xl-faq-question {
    padding: 18px 22px;
    background: var(--xl-bg-card);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    font-size: 0.98rem;
    transition: var(--xl-transition);
}

.xl-faq-question:hover {
    background: rgba(26, 111, 196, 0.04);
}

.xl-faq-question .xl-faq-icon {
    font-size: 1.2rem;
    color: var(--xl-primary);
    transition: transform 0.3s;
    font-weight: 700;
}

.xl-faq-item.active .xl-faq-icon {
    transform: rotate(45deg);
}

.xl-faq-answer {
    padding: 0 22px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.4s ease;
    background: var(--xl-bg-card);
}

.xl-faq-item.active .xl-faq-answer {
    padding: 0 22px 18px;
    max-height: 300px;
}

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

/* === 用户评论 === */
.xl-review-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.xl-review-card {
    background: var(--xl-bg-card);
    border-radius: var(--xl-radius);
    padding: 24px;
    box-shadow: var(--xl-shadow);
    border: 1px solid var(--xl-border);
    transition: var(--xl-transition);
}

.xl-review-card:hover {
    box-shadow: var(--xl-shadow-hover);
}

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

.xl-review-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--xl-primary), var(--xl-primary-light));
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 700;
    font-size: 1.1rem;
    flex-shrink: 0;
}

.xl-review-user strong {
    display: block;
    font-size: 0.95rem;
    margin-bottom: 2px;
}

.xl-review-stars {
    color: #f39c12;
    font-size: 0.85rem;
    letter-spacing: 2px;
}

.xl-review-card p {
    font-size: 0.9rem;
    color: var(--xl-text-light);
    line-height: 1.7;
    font-style: italic;
}

/* === 合作品牌墙 === */
.xl-partner-wall {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 40px;
    align-items: center;
    padding: 20px 0;
}

.xl-partner-item {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--xl-text-light);
    opacity: 0.6;
    transition: var(--xl-transition);
    padding: 12px 24px;
    border: 1px solid var(--xl-border);
    border-radius: var(--xl-radius-sm);
}

.xl-partner-item:hover {
    opacity: 1;
    color: var(--xl-primary);
    border-color: var(--xl-primary-light);
}

/* === 社交分享 === */
.xl-share-bar {
    display: flex;
    justify-content: center;
    gap: 16px;
    padding: 20px 0;
}

.xl-share-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 20px;
    border-radius: 24px;
    font-size: 0.88rem;
    font-weight: 500;
    color: #fff;
    transition: var(--xl-transition);
    cursor: pointer;
    border: none;
}

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

.xl-share-wechat { background: #07c160; }
.xl-share-weibo { background: #e6162d; }
.xl-share-douyin { background: #161823; }
.xl-share-bilibili { background: #00a1d6; }

/* === 页脚 === */
.xl-footer {
    background: var(--xl-bg-dark);
    color: rgba(255, 255, 255, 0.8);
    padding: 50px 0 0;
}

.xl-footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.xl-footer-brand img {
    height: 36px;
    margin-bottom: 14px;
}

.xl-footer-brand p {
    font-size: 0.88rem;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 16px;
}

.xl-footer h4 {
    font-size: 1rem;
    font-weight: 600;
    color: #fff;
    margin-bottom: 16px;
}

.xl-footer-links a {
    display: block;
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.88rem;
    padding: 4px 0;
    transition: var(--xl-transition);
}

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

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

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

.xl-footer-qr-item img {
    width: 100px;
    height: 100px;
    border-radius: 8px;
    margin-bottom: 6px;
}

.xl-footer-qr-item span {
    font-size: 0.78rem;
    color: rgba(255, 255, 255, 0.5);
}

.xl-footer-bottom {
    text-align: center;
    padding: 20px 0;
    font-size: 0.82rem;
    color: rgba(255, 255, 255, 0.4);
}

.xl-footer-bottom a {
    color: rgba(255, 255, 255, 0.5);
}

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

/* === 面包屑 === */
.xl-breadcrumb {
    padding: 16px 0;
    font-size: 0.85rem;
    color: var(--xl-text-light);
    margin-top: 68px;
}

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

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

.xl-breadcrumb span {
    margin: 0 6px;
    color: var(--xl-text-light);
}

/* === 内页头部 === */
.xl-page-hero {
    background: linear-gradient(135deg, var(--xl-bg-dark), var(--xl-primary-dark));
    padding: 100px 0 50px;
    text-align: center;
    color: #fff;
    margin-top: 68px;
}

.xl-page-hero h1 {
    font-size: 2.2rem;
    font-weight: 800;
    margin-bottom: 12px;
}

.xl-page-hero p {
    font-size: 1.05rem;
    opacity: 0.8;
    max-width: 600px;
    margin: 0 auto;
}

/* === How-To 指南 === */
.xl-howto-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    counter-reset: step;
}

.xl-howto-step {
    text-align: center;
    padding: 30px 20px;
    background: var(--xl-bg-card);
    border-radius: var(--xl-radius);
    box-shadow: var(--xl-shadow);
    position: relative;
    counter-increment: step;
    border: 1px solid var(--xl-border);
}

.xl-howto-step::before {
    content: counter(step);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, var(--xl-primary), var(--xl-primary-light));
    color: #fff;
    border-radius: 50%;
    font-size: 1.2rem;
    font-weight: 700;
    margin: 0 auto 16px;
}

.xl-howto-step h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.xl-howto-step p {
    font-size: 0.85rem;
    color: var(--xl-text-light);
    line-height: 1.6;
}

/* === 联系信息 === */
.xl-contact-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.xl-contact-card {
    background: var(--xl-bg-card);
    border-radius: var(--xl-radius);
    padding: 30px;
    box-shadow: var(--xl-shadow);
    border: 1px solid var(--xl-border);
}

.xl-contact-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 18px;
    color: var(--xl-primary-dark);
    padding-bottom: 12px;
    border-bottom: 2px solid var(--xl-primary-light);
}

.xl-contact-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 10px 0;
    border-bottom: 1px solid var(--xl-border);
}

.xl-contact-item:last-child {
    border-bottom: none;
}

.xl-contact-item .xl-contact-label {
    font-weight: 600;
    color: var(--xl-text-main);
    min-width: 80px;
    font-size: 0.9rem;
}

.xl-contact-item .xl-contact-value {
    color: var(--xl-text-light);
    font-size: 0.9rem;
}

/* === 数据统计条 === */
.xl-stats-bar {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    padding: 40px 0;
}

.xl-stat-item {
    text-align: center;
    padding: 24px;
    background: rgba(255, 255, 255, 0.06);
    border-radius: var(--xl-radius);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.xl-stat-num {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--xl-accent);
    margin-bottom: 6px;
}

.xl-stat-label {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
}

/* === 图片加载样式 === */
img[loading="lazy"] {
    opacity: 1;
}

.xl-module-card-img,
.xl-video-thumb img {
    opacity: 1;
    transition: opacity 0.3s ease;
}

/* === 回到顶部 === */
.xl-back-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 44px;
    height: 44px;
    background: var(--xl-primary);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--xl-transition);
    z-index: 999;
    border: none;
    font-size: 1.2rem;
    box-shadow: 0 4px 12px rgba(26, 111, 196, 0.4);
}

.xl-back-top.visible {
    opacity: 1;
    visibility: visible;
}

.xl-back-top:hover {
    background: var(--xl-accent);
    transform: translateY(-3px);
}

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

@media (max-width: 768px) {
    .xl-nav {
        display: none;
        position: absolute;
        top: 68px;
        left: 0;
        width: 100%;
        background: rgba(10, 22, 40, 0.98);
        flex-direction: column;
        padding: 16px;
        gap: 4px;
    }
    .xl-nav.open {
        display: flex;
    }
    .xl-nav a {
        width: 100%;
        padding: 12px 16px;
    }
    .xl-mobile-toggle {
        display: block;
    }
    .xl-search-box {
        display: none;
    }
    .xl-banner {
        min-height: 400px;
    }
    .xl-banner-content h1 {
        font-size: 1.8rem;
    }
    .xl-video-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }
    .xl-module-grid,
    .xl-expert-grid {
        grid-template-columns: 1fr;
    }
    .xl-review-grid {
        grid-template-columns: 1fr;
    }
    .xl-stats-bar {
        grid-template-columns: repeat(2, 1fr);
    }
    .xl-footer-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    .xl-contact-grid {
        grid-template-columns: 1fr;
    }
    .xl-share-bar {
        flex-wrap: wrap;
    }
    .xl-section {
        padding: 40px 0;
    }
    .xl-howto-steps {
        grid-template-columns: 1fr;
    }
    .xl-partner-wall {
        gap: 16px;
    }
}

@media (max-width: 480px) {
    .xl-video-grid {
        grid-template-columns: 1fr;
    }
    .xl-banner-content h1 {
        font-size: 1.5rem;
    }
    .xl-section-title h2 {
        font-size: 1.5rem;
    }
}

/* === 4列模块网格 === */
.xl-module-grid-4 {
    grid-template-columns: repeat(4, 1fr) !important;
}

@media (max-width: 1024px) {
    .xl-module-grid-4 {
        grid-template-columns: repeat(2, 1fr) !important;
    }
}

@media (max-width: 768px) {
    .xl-module-grid-4 {
        grid-template-columns: 1fr !important;
    }
}

/* === 内容元信息条 === */
.xl-content-meta {
    display: flex;
    justify-content: center;
    gap: 24px;
    margin-bottom: 24px;
    font-size: 0.85rem;
    color: var(--xl-text-light);
    flex-wrap: wrap;
}

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

/* === Banner标签 === */
.xl-banner-tags {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
    margin-top: 20px;
}

.xl-banner-tags span {
    padding: 5px 14px;
    background: rgba(255, 255, 255, 0.15);
    color: rgba(255, 255, 255, 0.9);
    border-radius: 20px;
    font-size: 0.82rem;
    backdrop-filter: blur(4px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

/* === 深色统计区域 === */
.xl-section-dark {
    background: var(--xl-bg-dark);
    color: #fff;
    padding: 30px 0;
}

/* === Logo区域favicon图标 === */
.xl-logo {
    display: flex;
    align-items: center;
    gap: 8px;
}

.xl-logo img:first-child {
    flex-shrink: 0;
}