/* 主要内容区域样式 */
.main-content {
    margin-top: calc(var(--header-height) + 80px);
    min-height: calc(100vh - var(--header-height) - 80px);
}

/* 全屏自适应Banner设计 - 调整为16:9比例 */
.hero-section {
    width: 100%;
    height: auto;
    position: relative;
    overflow: hidden;
}

.hero-container {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: var(--spacing-xxl);
    align-items: center;
}

.hero-content h1 {
    font-size: 40px;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
}

.hero-content p {
    font-size: var(--font-size-lg);
    opacity: 0.9;
}

.hero-actions {
    margin-top: var(--spacing-xl);
    display: flex;
    gap: var(--spacing-md);
}

.hero-actions .btn {
    padding: 12px 22px;
    font-weight: 700;
    border-radius: var(--radius-large);
    box-shadow: 0 8px 24px rgba(0,0,0,0.15);
    transform: translateY(0);
    transition: all 0.2s ease;
}

.hero-actions .btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 28px rgba(0,0,0,0.2);
}

/* 提高对比度：主按钮改为浅底深字，保证在深色渐变背景上更突出 */
.hero-actions .btn.btn-primary {
    background: #ffffff;
    color: var(--primary-dark);
    border: 2px solid rgba(255,255,255,0.0);
}

.hero-actions .btn.btn-primary:hover {
    background: #f5f7ff;
    color: var(--primary-dark);
}

/* 次按钮改为半透明白边 + 白字，更明显 */
.hero-actions .btn.btn-outline {
    background: rgba(255,255,255,0.12);
    color: #ffffff;
    border: 2px solid rgba(255,255,255,0.8);
}

.hero-actions .btn.btn-outline:hover {
    background: rgba(255,255,255,0.2);
}

.hero-highlights {
    margin-top: var(--spacing-lg);
    display: flex;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
    opacity: 0.95;
}

.hero-highlights span i { margin-right: 6px; }

.hero-visual img {
    width: 100%;
    border-radius: var(--radius-large);
    box-shadow: var(--shadow-medium);
}

/* 首页快捷导航 */
.shortcut-section { background: var(--bg-white); padding: var(--spacing-xl) 0; }
.shortcut-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: var(--spacing-xl);
    max-width: var(--container-width);
    margin: 0 auto;
}
.shortcut-item { text-align: center; cursor: pointer; }
.shortcut-icon {
    width: 64px; height: 64px; border-radius: var(--radius-round);
    display: flex; align-items: center; justify-content: center;
    margin: 0 auto var(--spacing-sm);
    box-shadow: var(--shadow-light);
}
.shortcut-icon img { width: 36px; height: 36px; display: block; }
.shortcut-title { color: var(--text-primary); font-weight: 600; }

@media (max-width: 768px) {
    .shortcut-grid { grid-template-columns: repeat(5, minmax(0, 1fr)); gap: var(--spacing-lg); }
    .shortcut-icon { width: 56px; height: 56px; }
    .shortcut-icon img { width: 30px; height: 30px; }
}

/* 调整：Banner 根据图片比例自适应高度 */
.hero-section {
    width: 100%;
    height: auto;
    position: relative;
    overflow: hidden;
}

.banner-container {
    position: relative;
    width: 100%;
    height: auto; /* 高度由脚本按图片比例设置 */
}

.banner-slider {
    position: relative;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.banner-item {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 0.5s ease;
    cursor: pointer;
    z-index: 1;
    transform: none;
}

.banner-item.active { opacity: 1; z-index: 2; }

.banner-item img {
    width: 100%;
    height: 100%;
    object-fit: contain; /* 以图片原始比例完整展示 */
    transition: none;
}

/* 图片加载失败时的样式 */
.banner-item img.error {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 16px;
    text-align: center;
}

.banner-item img.error::before {
    content: '图片加载失败';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(0, 0, 0, 0.7);
    padding: 8px 16px;
    border-radius: 4px;
    font-size: 14px;
}

/* 轮播图加载状态指示器 */
.banner-loading {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    color: white;
    z-index: 10;
    background: rgba(0, 0, 0, 0.6);
    padding: 24px;
    border-radius: 12px;
    backdrop-filter: blur(8px);
}

.banner-loading.hidden {
    display: none;
}

/* 通用loading-spinner样式 */
.loading-spinner {
    width: 24px;
    height: 24px;
    border: 2px solid rgba(0, 0, 0, 0.1);
    border-top: 2px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.banner-loading .loading-spinner {
    width: 28px;
    height: 28px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top: 2px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.banner-loading span {
    font-size: 14px;
    font-weight: 500;
    text-align: center;
}

.banner-item:hover img {
    transform: scale(1.05);
}

/* 轮播标题覆盖层 - 响应式设计 */
.banner-caption {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    pointer-events: none;
    padding-left: 10%;
    z-index: 3;
}

.banner-caption .caption-inner {
    background: rgba(0, 0, 0, 0.4);
    color: #fff;
    padding: 24px 28px;
    border-radius: var(--radius-large);
    box-shadow: var(--shadow-medium);
    max-width: 50%;
    backdrop-filter: saturate(140%) blur(8px);
}

.banner-caption h2 {
    font-size: clamp(24px, 4vw, 36px);
    margin: 8px 0 6px;
    line-height: 1.2;
    font-weight: 700;
}

.banner-caption p {
    font-size: clamp(14px, 2vw, 18px);
    opacity: 0.95;
    line-height: 1.4;
}

.caption-badge {
    display: inline-block;
    font-size: clamp(12px, 1.5vw, 14px);
    padding: 6px 12px;
    border-radius: 999px;
    background: rgba(245, 140, 69, 0.9);
    border: 1px solid rgba(255,255,255,0.3);
    font-weight: 600;
}

/* 模块宽度统一规范 - 最大宽度1200px */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 16px;
}

/* 容器在更大分辨率的适配 */
.container { max-width: min(1200px, 96vw); padding-left: max(16px, env(safe-area-inset-left)); padding-right: max(16px, env(safe-area-inset-right)); }
@media (min-width: 1280px) { .container { max-width: 1280px; } }
@media (min-width: 1440px) { .container { max-width: 1400px; } }
@media (min-width: 1600px) { .container { max-width: 1500px; } }

/* 字体大小与标题clamp，使在小屏/大屏更协调 */
.section-title { font-size: clamp(20px, 2.2vw, 32px); }

/* 案例统计数据 - 优化显示效果 */
.cases-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xxl);
    margin: var(--spacing-xl) 0;
    padding: var(--spacing-lg) 0;
}

.stat-item {
    text-align: center;
    padding: var(--spacing-xl);
    background: linear-gradient(135deg, #f58c45, #ff6b35);
    color: white;
    border-radius: var(--radius-large);
    box-shadow: var(--shadow-medium);
    min-width: 140px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.stat-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-large);
}

.stat-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s ease;
}

.stat-item:hover::before {
    left: 100%;
}

.stat-number {
    font-size: clamp(28px, 4vw, 40px);
    font-weight: 800;
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    transition: all 0.3s ease;
}

.stat-number.animate {
    animation: numberEmphasis 0.3s ease-out;
}

@keyframes numberEmphasis {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); color: #fff; }
    100% { transform: scale(1); }
}

.stat-number::after {
    content: attr(data-suffix);
    font-size: 0.7em;
    opacity: 0.9;
}

.stat-label {
    font-size: clamp(14px, 1.5vw, 16px);
    opacity: 0.9;
    font-weight: 500;
}

/* 数据加载状态 - 骨架屏 */
.cases-stats.loading .stat-item {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
}

@keyframes loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.cases-stats.loading .stat-number,
.cases-stats.loading .stat-label {
    color: transparent;
    background: #e0e0e0;
    border-radius: 4px;
}

/* 固定悬浮留言反馈按钮 */
.floating-feedback-btn {
    position: fixed;
    bottom: 100px;
    right: 20px;
    background: linear-gradient(135deg, #f58c45, #ff6b35);
    color: white;
    padding: 16px 20px;
    border-radius: 50px;
    box-shadow: var(--shadow-medium);
    cursor: pointer;
    z-index: 999;
    display: none; /* 隐藏右下角浮动反馈按钮 */
    align-items: center;
    gap: 8px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.floating-feedback-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-large);
}

.floating-feedback-btn i {
    font-size: 18px;
}

/* 留言反馈弹窗 */
.feedback-modal {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.feedback-modal.show {
    display: flex;
}

.feedback-modal .modal-content {
    background: white;
    border-radius: var(--radius-large);
    box-shadow: var(--shadow-large);
    max-width: 600px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
}

.feedback-modal .modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-light);
}

.feedback-modal .modal-header h3 {
    margin: 0;
    color: var(--text-primary);
}

.feedback-modal .close-btn {
    background: none;
    border: none;
    font-size: 20px;
    cursor: pointer;
    color: var(--text-secondary);
    padding: 4px;
    border-radius: var(--radius-round);
    transition: all 0.2s ease;
}

.feedback-modal .close-btn:hover {
    background: var(--bg-gray);
    color: var(--text-primary);
}

.feedback-modal .modal-body {
    padding: var(--spacing-lg);
}

.feedback-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.feedback-form .form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.feedback-form .form-field {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.feedback-form label {
    font-weight: 600;
    color: var(--text-primary);
}

.feedback-form .field-input {
    position: relative;
    display: flex;
    align-items: center;
}

.feedback-form .field-input input,
.feedback-form .field-input textarea {
    width: 100%;
    padding: 12px 14px 12px 40px;
    border: 1px solid var(--border-light);
    border-radius: var(--radius-medium);
    font-size: 14px;
    background: var(--bg-gray);
    transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.feedback-form .field-input.textarea textarea {
    padding-left: 40px;
    min-height: 120px;
    resize: vertical;
}

.feedback-form .field-icon {
    position: absolute;
    left: 12px;
    color: var(--text-secondary);
    font-size: 14px;
}

.feedback-form .field-input input:focus,
.feedback-form .field-input textarea:focus {
    outline: none;
    border-color: #f58c45;
    box-shadow: 0 0 0 3px rgba(245, 140, 69, 0.12);
    background: white;
}

.feedback-form .help-text {
    color: var(--text-secondary);
    font-size: 12px;
    margin-top: 6px;
}

.feedback-form .form-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.feedback-form .form-tip {
    color: var(--text-secondary);
    font-size: 12px;
}

/* 轮播图箭头 */
.banner-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 80px;
    height: 80px;
    background-color: rgba(0, 0, 0, 0.35);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 4;
    transition: all 0.3s ease;
    opacity: 0;
}

.banner-container:hover .banner-arrow {
    opacity: 1;
}

.banner-arrow:hover {
    background-color: rgba(0, 0, 0, 0.6);
    transform: translateY(-50%) scale(1.05);
}

.banner-arrow-left { left: var(--spacing-lg); }
.banner-arrow-right { right: var(--spacing-lg); }

.banner-arrow svg { display: block; width: 36px; height: 36px; }
.banner-arrow svg path { stroke: #ffffff; }

/* 轮播图圆点 */
.banner-dots {
    position: absolute;
    bottom: var(--spacing-lg);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: var(--spacing-sm);
    z-index: 3;
}

/* 留言与联系样式 */
.message-section {
    padding: var(--spacing-xxl) 0;
    background: var(--bg-gray);
}

.message-form {
    max-width: 100%;
    margin: 0 auto;
    background: white;
    padding: var(--spacing-xxl);
    border-radius: var(--radius-large);
    box-shadow: var(--shadow-light);
}

.message-form .form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.form-field { display: flex; flex-direction: column; gap: 8px; }
.form-field label { font-weight: 600; color: var(--text-primary); }
.field-input { position: relative; display: flex; align-items: center; }
.field-input input, .field-input textarea { width: 100%; padding: 12px 14px 12px 40px; border: 1px solid var(--border-light); border-radius: var(--radius-medium); font-size: 14px; background: var(--bg-gray); transition: border-color .2s ease, box-shadow .2s ease, background .2s ease; }
.field-input.textarea textarea { padding-left: 40px; min-height: 120px; resize: vertical; }
.field-icon { position: absolute; left: 12px; color: var(--text-secondary); font-size: 14px; }
.field-input input:focus, .field-input textarea:focus { outline: none; border-color: var(--primary-color); box-shadow: 0 0 0 3px rgba(64,111,255,.12); background: #fff; }
.help-text { color: var(--text-secondary); font-size: 12px; margin-top: 6px; }
.message-form .form-actions { display: flex; align-items: center; gap: var(--spacing-md); }
.message-form .form-tip { color: var(--text-secondary); font-size: 12px; }

.contact-section { padding: var(--spacing-xxl) 0; background: var(--bg-gray); }
.contact-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: var(--spacing-lg); align-items: stretch; }
.contact-card { background: #fff; border-radius: var(--radius-large); box-shadow: var(--shadow-light); padding: var(--spacing-xl); display: flex; flex-direction: column; gap: 10px; justify-content: space-between; }
.contact-card h3 { margin-bottom: 4px; }
.qr-box { display: flex; flex-direction: column; align-items: center; gap: 8px; }
.qr-box img { width: 120px; height: 120px; object-fit: contain; }

.app-download .onboarding-cta { justify-content: center; }

@media (max-width: 768px) {
    .banner-container { height: 260px; }
    .banner-caption { padding-left: 16px; }
    .banner-caption .caption-inner { max-width: 86%; padding: 14px 16px; }
    .banner-caption h2 { font-size: 18px; }
    .banner-caption p { font-size: 12px; }
    .message-form { padding: var(--spacing-xl); }
    .message-form .form-row { grid-template-columns: 1fr; gap: var(--spacing-md); }
}

.dot {
    width: 10px;
    height: 10px;
    border-radius: var(--radius-round);
    background-color: rgba(255, 255, 255, 0.4);
    cursor: pointer;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.dot.active {
    background-color: white;
    transform: scale(1.2);
    border-color: rgba(255, 255, 255, 0.3);
}

.dot:hover {
    background-color: rgba(255, 255, 255, 0.8);
    transform: scale(1.1);
}

/* 平台优势 */
.features-section { padding: var(--spacing-xxl) 0; background: var(--bg-white); }
.section-title { text-align: center; font-size: 28px; margin-bottom: var(--spacing-xl); }
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--spacing-lg);
}
.feature-card {
    background: var(--bg-white);
    border-radius: var(--radius-large);
    box-shadow: var(--shadow-light);
    padding: var(--spacing-xl);
    text-align: center;
}
.feature-card i { font-size: 26px; color: var(--primary-color); margin-bottom: var(--spacing-sm); }

.menu-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--spacing-lg);
    max-width: 800px;
    margin: 0 auto;
}

.menu-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--spacing-xl);
    border-radius: var(--radius-large);
    background-color: var(--bg-gray);
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
}

.menu-item:hover {
    background-color: var(--primary-light);
    transform: translateY(-4px);
    box-shadow: var(--shadow-medium);
}

.menu-icon {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-round);
    background-color: var(--primary-color);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-md);
    transition: all 0.3s ease;
}

.menu-item:hover .menu-icon {
    background-color: var(--primary-dark);
    transform: scale(1.1);
}

.menu-item h3 {
    font-size: var(--font-size-lg);
    font-weight: bold;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.menu-item p {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

/* 入驻流程 */
.onboarding-section { padding: var(--spacing-xxl) 0; background: var(--bg-gray); }
.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}
.step { background: #fff; border-radius: var(--radius-large); box-shadow: var(--shadow-light); padding: var(--spacing-xl); }
.step-num { display: inline-flex; align-items: center; justify-content: center; width: 36px; height: 36px; border-radius: 50%; background: var(--primary-color); color: #fff; font-weight: 700; margin-bottom: var(--spacing-sm); }
.onboarding-cta { margin-top: var(--spacing-xl); display: flex; gap: var(--spacing-md); justify-content: center; }

.category-tabs {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    overflow-x: auto;
    padding: 0 var(--spacing-sm);
}

.tab-item {
    padding: 8px 20px;
    border-radius: var(--radius-large);
    background-color: var(--bg-gray);
    color: var(--text-regular);
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
    font-weight: 500;
}

.tab-item.active,
.tab-item:hover {
    background-color: var(--primary-color);
    color: white;
}

/* 成功案例 */
.cases-section { padding: var(--spacing-xxl) 0; background: var(--bg-white); }
.cases-grid { 
    display: grid; 
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); 
    gap: var(--spacing-lg); 
    margin-top: var(--spacing-lg); 
    min-height: 200px; /* 确保有最小高度 */
    position: relative;
}
.cases-grid.loading::before { 
    content: ''; 
    position: absolute; 
    top: 50%; 
    left: 50%; 
    width: 28px; 
    height: 28px; 
    margin: -14px 0 0 -14px; 
    border-radius: 50%; 
    border: 2px solid rgba(0,0,0,0.12); 
    border-top-color: var(--primary-color); 
    animation: spin 0.9s linear infinite; 
    z-index: 2; 
}
.cases-grid.loading::after { content: ''; position: absolute; inset: 0; background: rgba(255,255,255,0.6); backdrop-filter: blur(1px); }
.case-card { 
    background: var(--bg-white); 
    border-radius: var(--radius-large); 
    overflow: hidden; 
    box-shadow: var(--shadow-light); 
    min-height: 300px; /* 确保卡片有最小高度 */
}
.case-card .img-wrap { position: relative; width: 100%; height: 200px; background: #f5f6f7; display: flex; align-items: center; justify-content: center; }
.case-card .img-wrap.loading { display: block; aspect-ratio: 1; height: auto; }
.case-card .img-wrap.loading::after { 
    content: '' !important; 
    width: 100% !important; 
    height: 100% !important; 
    border-radius: 50% !important; 
    background: white !important;
    display: block !important;
    position: absolute !important;
    top: 0 !important;
    left: 0 !important;
    z-index: 0 !important;
    box-sizing: border-box !important;
}
.case-card .img-wrap img { width: 100%; height: 100%; object-fit: cover; display: block; opacity: 0; transition: opacity .25s ease; }
.case-card .img-wrap img.loaded { opacity: 1; }
.case-info { 
    padding: var(--spacing-lg); 
    background: white; /* 确保背景色 */
}
.case-info h3 {
    margin: 0 0 10px 0;
    color: #333;
    font-size: 16px;
    font-weight: 600;
}
.case-info p {
    margin: 0;
    color: #666;
    line-height: 1.4;
    font-size: 14px;
}

/* 成功案例下的分类tabs（与通用样式保持一致） */
.cases-categories { display: flex; align-items: center; justify-content: center; gap: var(--spacing-xl); overflow-x: auto; padding: 0 var(--spacing-sm); margin-top: var(--spacing-md); }
.cases-categories .tab-item {
    padding: 12px 28px;
    border-radius: 999px;
    background: #fff;
    color: var(--text-primary);
    border: 2px solid var(--primary-color);
    box-shadow: 0 6px 16px rgba(245, 140, 69, 0.12);
    cursor: pointer;
    transition: transform .2s ease, box-shadow .2s ease, background .2s ease, color .2s ease;
    white-space: nowrap;
    font-weight: 700;
    font-size: 15px;
}
.cases-categories .tab-item:hover {
    background: var(--primary-color);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 10px 22px rgba(245, 140, 69, 0.22);
}
.cases-categories .tab-item.active {
    background: var(--primary-color);
    color: #fff;
    box-shadow: 0 10px 22px rgba(245, 140, 69, 0.22);
}

/* APP下载模块 */
.app-download-section {
    padding: var(--spacing-xxl) 0;
    background: linear-gradient(135deg, #f8f4ff 0%, #e8e0ff 100%);
}

.app-download-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xxl);
    align-items: center;
}

.app-download-content {
    padding-right: var(--spacing-lg);
}

.app-download-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.2;
}

.app-download-desc {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--spacing-xl);
}

.app-download-buttons {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.app-download-btn {
    display: inline-block;
    transition: transform 0.3s ease;
}

.app-download-btn:hover {
    transform: translateY(-2px);
}

.app-download-btn img {
    display: block;
    height: 60px !important;
    width: auto !important;
    max-width: 260px;
}

.app-download-pro-link {
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.app-download-pro-link a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
}

.app-download-pro-link a:hover {
    text-decoration: underline;
}

/* 手机展示 */
.app-download-phone {
    display: flex;
    justify-content: center;
    align-items: center;
}

.app-download-hero {
    width: 100%;
    max-width: 260px;
    height: auto;
    display: block;
    border-radius: 24px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.15);
}

.phone-mockup {
    position: relative;
    width: 280px;
    height: 560px;
    background: #000;
    border-radius: 30px;
    padding: 8px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.3);
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: #fff;
    border-radius: 22px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.phone-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 20px;
    background: #fff;
    border-bottom: 1px solid #eee;
}

.phone-time {
    font-weight: 600;
    font-size: 14px;
}

.phone-signal {
    font-size: 12px;
    color: #666;
}

.phone-content {
    flex: 1;
    padding: 20px;
    overflow-y: auto;
}

.phone-progress {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    font-size: 12px;
    color: #666;
}

.phone-close {
    font-size: 18px;
    cursor: pointer;
}

.phone-form h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 15px;
    color: #333;
}

.phone-options {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 20px;
}

.phone-option {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.phone-option:hover {
    border-color: var(--primary-color);
    background: #f8f4ff;
}

.phone-option input[type="radio"] {
    margin: 0;
}

.phone-option input[type="radio"]:checked + .option-icon {
    color: var(--primary-color);
}

.phone-option:has(input:checked) {
    border-color: var(--primary-color);
    background: #f8f4ff;
}

.option-icon {
    font-size: 20px;
    min-width: 24px;
}

.phone-input {
    width: 100%;
    padding: 12px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 14px;
    margin-top: 10px;
}

.phone-input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.phone-footer {
    display: flex;
    gap: 10px;
    padding: 15px 20px;
    background: #f8f9fa;
    border-top: 1px solid #eee;
}

.phone-btn {
    flex: 1;
    padding: 12px;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.phone-btn--secondary {
    background: #e8e0ff;
    color: var(--primary-color);
}

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

.phone-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .app-download-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .app-download-content {
        padding-right: 0;
        text-align: center;
    }
    
    .app-download-title {
        font-size: 2rem;
    }
    
    .app-download-buttons {
        justify-content: center;
    }
    .app-download-btn img { height: 50px !important; }
    
    .phone-mockup {
        width: 240px;
        height: 480px;
    }
}

@media (max-width: 480px) {
    .app-download-title {
        font-size: 1.8rem;
    }
    
    .app-download-desc {
        font-size: 1rem;
    }
    
    .app-download-btn img {
        height: 50px;
    }
    
    .phone-mockup {
        width: 200px;
        height: 400px;
    }
    
    .phone-content {
        padding: 15px;
    }
}

/* FAQ */
.faq-section { padding: var(--spacing-xxl) 0; background: var(--bg-gray); }
.faq-list { margin-top: var(--spacing-lg); display: grid; gap: var(--spacing-lg); }
.faq-item {
    background: #fff;
    border-radius: var(--radius-large);
    box-shadow: var(--shadow-light);
    padding: var(--spacing-xl);
    display: grid;
    grid-template-columns: 1fr 1.6fr;
    align-items: center;
    gap: var(--spacing-xl);
    min-height: 220px;
    height: 220px;
}
/* 奇数项：图片在左，内容在右 */
.faq-item:nth-child(odd) {
    grid-template-columns: 1fr 1.6fr;
}
.faq-item:nth-child(odd) .faq-media { order: 1; }
.faq-item:nth-child(odd) .faq-content { order: 2; }
/* 偶数项：图片在右，内容在左 */
.faq-item:nth-child(even) {
    grid-template-columns: 1.6fr 1fr;
}
.faq-item:nth-child(even) .faq-media { order: 2; }
.faq-item:nth-child(even) .faq-content { order: 1; }
.faq-media img { 
    width: 100%; 
    max-width: 280px; 
    height: auto; 
    max-height: 150px;
    object-fit: contain;
    display: block; 
    margin: 0 auto; 
}
.faq-content h3 { margin-bottom: 8px; font-size: 18px; color: var(--text-primary); }
.faq-content p { color: var(--text-secondary); line-height: 1.7; }



/* 移动端菜单弹窗样式 */
.mobile-nav-modal { position: fixed; inset: 0; background: rgba(0,0,0,0.4); z-index: 2000; display: none; }
.mobile-nav-modal.show { display: block; }
.mobile-nav-content { position: absolute; top: 0; left: 0; bottom: 0; width: 78%; max-width: 320px; background: #fff; box-shadow: var(--shadow-medium); transform: translateX(-100%); transition: transform .25s ease; }
.mobile-nav-modal.show .mobile-nav-content { transform: translateX(0); }
.mobile-nav-header { display: flex; align-items: center; justify-content: space-between; padding: 12px; border-bottom: 1px solid var(--border-light); }
.mobile-nav-title { font-weight: 700; }
.mobile-nav-close { width: 28px; height: 28px; border-radius: var(--radius-round); border: 1px solid var(--border-light); background: var(--bg-gray); }
.mobile-lang-switch { display: flex; gap: 8px; padding: 10px 12px; border-bottom: 1px solid var(--border-light); }
.mobile-lang-switch .lang-btn { padding: 6px 10px; border-radius: 14px; background: var(--bg-gray); color: var(--text-primary); font-size: 12px; }
.mobile-lang-switch .lang-btn.active { background: var(--primary-color); color: #fff; }
.mobile-nav-list { display: flex; flex-direction: column; padding: 8px 12px; }
.mobile-nav-list li a { display: block; padding: 12px 6px; border-bottom: 1px solid var(--border-light); color: var(--text-primary); font-weight: 600; }
.mobile-nav-list li:last-child a { border-bottom: none; }
.mobile-nav-list li a:hover { color: var(--primary-color); }

.content-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    max-width: 1000px;
    margin: 0 auto;
}

.content-column {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.content-card {
    background-color: var(--bg-white);
    border-radius: var(--radius-large);
    overflow: hidden;
    box-shadow: var(--shadow-light);
    transition: all 0.3s ease;
    cursor: pointer;
}

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

.card-image {
    position: relative;
    width: 100%;
    height: 200px;
    overflow: hidden;
}

.card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
    border-radius: var(--radius-medium) var(--radius-medium) 0 0;
}

/* 图片加载优化 */
.card-image img {
    background: linear-gradient(135deg, var(--bg-gray), var(--border-light));
}

.card-image img[src*=".svg"] {
    background: transparent;
}

.content-card:hover .card-image img {
    transform: scale(1.05);
}

.card-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.content-card:hover .card-overlay {
    opacity: 1;
}

.card-overlay i {
    color: white;
    font-size: var(--font-size-xl);
    background-color: rgba(0, 0, 0, 0.5);
    width: 48px;
    height: 48px;
    border-radius: var(--radius-round);
    display: flex;
    align-items: center;
    justify-content: center;
}

.card-overlay .duration {
    color: white;
    font-size: var(--font-size-sm);
    background: rgba(0, 0, 0, 0.6);
    padding: 4px 8px;
    border-radius: var(--radius-small);
    margin-top: var(--spacing-xs);
}

.card-content {
    padding: var(--spacing-lg);
}

.card-title {
    font-size: var(--font-size-md);
    font-weight: bold;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-description {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: var(--spacing-md);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-md);
}

.tag {
    background: var(--info-color-light);
    color: var(--info-color);
    font-size: var(--font-size-xs);
    padding: 2px 8px;
    border-radius: var(--radius-small);
    white-space: nowrap;
}

.card-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.user-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.user-info img {
    width: 28px;
    height: 28px;
    border-radius: var(--radius-round);
    border: 2px solid var(--border-light);
    transition: all 0.3s ease;
}

.user-info:hover img {
    border-color: var(--primary-color);
    transform: scale(1.1);
}

.user-details {
    display: flex;
    align-items: center;
    gap: 4px;
}

.user-name {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    font-weight: 500;
}

.verified {
    color: var(--primary-color);
    font-size: 12px;
}

.interaction {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.like-btn, .view-btn {
    display: flex;
    align-items: center;
    gap: 4px;
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    cursor: pointer;
    transition: all 0.3s ease;
    padding: 4px 8px;
    border-radius: var(--radius-small);
}

.like-btn:hover, .view-btn:hover {
    background: var(--background-light);
    color: var(--primary-color);
}

.like-btn.liked {
    color: var(--error-color);
}

.like-btn.liked i {
    animation: heartBeat 0.3s ease;
}

@keyframes heartBeat {
    0% { transform: scale(1); }
    50% { transform: scale(1.2); }
    100% { transform: scale(1); }
}

/* ==================== 加载状态样式 ==================== */

.loading-indicator {
    display: none;
    justify-content: center;
    align-items: center;
    padding: var(--spacing-xl);
    background: white;
    border-radius: var(--radius-medium);
    box-shadow: var(--shadow-light);
    margin: var(--spacing-lg) 0;
}

.loading-spinner {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-light);
    border-top: 2px solid var(--primary-color);
    border-radius: var(--radius-round);
    animation: spin 1s linear infinite;
    margin-right: var(--spacing-sm);
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.loading-more {
    display: none;
    justify-content: center;
    align-items: center;
    padding: var(--spacing-lg);
    margin: var(--spacing-lg) 0;
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

.loading-more .loading-spinner {
    width: 20px;
    height: 20px;
    border: 2px solid rgba(0, 0, 0, 0.1);
    border-top: 2px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-right: 8px;
}

.no-more-data {
    display: none;
    text-align: center;
    padding: var(--spacing-lg);
    margin: var(--spacing-lg) 0;
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    background: var(--background-light);
    border-radius: var(--radius-medium);
}

/* 内容卡片加载动画 */
.content-card {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.3s ease;
}

.content-card.loaded {
    opacity: 1;
    transform: translateY(0);
}

/* 瀑布流优化 */
.content-column {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.content-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    max-width: 1200px;
    margin: 0 auto;
}

@media (min-width: 768px) {
    .content-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1200px) {
    .content-grid {
        grid-template-columns: repeat(2, 1fr);
        max-width: 1200px;
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    /* 移动端隐藏横向菜单后，移除其占位 */
    .main-content {
        margin-top: var(--header-height);
        min-height: calc(100vh - var(--header-height));
    }
    .hero-container { grid-template-columns: 1fr; }
    .hero-content h1 { font-size: 28px; }
    
    .banner-content h2 {
        font-size: var(--font-size-xl);
    }
    
    .banner-content p {
        font-size: var(--font-size-md);
    }
    
    .menu-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--spacing-md);
    }
    
    .menu-item {
        padding: var(--spacing-lg);
    }
    
    .menu-icon {
        width: 48px;
        height: 48px;
        font-size: var(--font-size-lg);
    }
    
    .content-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    /* 移动端优化：成功案例下的分类tabs，避免第一个被遮挡 */
    .cases-categories { justify-content: flex-start; padding: 0 12px; -webkit-overflow-scrolling: touch; }
    .cases-categories .tab-item { padding: 8px 18px; font-size: 14px; border-width: 2px; }
}

@media (max-width: 576px) {
    .hero-content h1 { font-size: 24px; }
    
    .menu-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .category-tabs {
        gap: var(--spacing-md);
    }
    
    .tab-item {
        padding: 6px 16px;
        font-size: var(--font-size-sm);
    }

    /* 更小屏下，分类tabs继续左对齐并缩小间距 */
    .cases-categories { justify-content: flex-start; padding: 0 10px; gap: 8px; }
    .cases-categories .tab-item { padding: 6px 12px; font-size: 12px; }
}

/* 更新品牌色彩变量 */
:root {
    --primary-color: #f58c45;
    --primary-dark: #e67e22;
    --primary-light: #ffa366;
}

/* 案例卡片悬停效果 */
.case-card {
    background: var(--bg-white);
    border-radius: var(--radius-large);
    overflow: hidden;
    box-shadow: var(--shadow-light);
    transition: all 0.3s ease;
    cursor: pointer;
}

.case-card:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: var(--shadow-large);
}


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

/* 播放图标样式 */
.play-icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 48px;
    height: 48px;
    background: rgba(0, 0, 0, 0.7);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 3;
    transition: all 0.3s ease;
}

.play-icon svg {
    width: 20px;
    height: 20px;
    margin-left: 2px; /* 微调播放按钮位置 */
}

.case-card:hover .play-icon {
    background: rgba(0, 0, 0, 0.8);
    transform: translate(-50%, -50%) scale(1.1);
}

/* 内容类型标签样式 */
.content-type-label {
    position: absolute;
    top: 8px;
    right: 8px;
    padding: 4px 8px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
    color: white;
    z-index: 2;
    backdrop-filter: blur(4px);
    transition: all 0.3s ease;
}

.video-label {
    background: rgba(245, 140, 69, 0.9);
}

.article-label {
    background: rgba(52, 152, 219, 0.9);
}

.case-label {
    background: rgba(46, 204, 113, 0.9);
}

.case-card:hover .content-type-label {
    transform: scale(1.05);
}

/* 案例元信息样式 */
.case-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid #f0f0f0;
}

.author-info {
    display: flex;
    align-items: center;
    gap: 8px;
}

.author-avatar {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    object-fit: cover;
}

.author-name {
    font-size: 12px;
    color: #666;
    font-weight: 500;
}

.stats {
    display: flex;
    align-items: center;
    gap: 4px;
}

.like-count {
    font-size: 12px;
    color: #999;
    font-weight: 500;
}

.like-count::before {
    content: '♥';
    color: #ff6b6b;
    margin-right: 2px;
}

/* 按钮使用新品牌色 */
.btn.btn-primary {
    background: var(--primary-color);
    border-color: var(--primary-color);
}

.btn.btn-primary:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
}

.btn.btn-outline {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

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

/* 留言表单优化 - 宽度统一 */
.message-form {
    max-width: 100%;
    margin: 0 auto;
    background: white;
    padding: var(--spacing-xxl);
    border-radius: var(--radius-large);
    box-shadow: var(--shadow-light);
}

.message-form .form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.message-form .form-field {
    display: flex;
    flex-direction: column;
    gap: 8px;
    position: relative;
}

.message-form label {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 14px;
}

.message-form .field-input {
    position: relative;
    display: flex;
    align-items: center;
}

.message-form .field-input input,
.message-form .field-input textarea {
    width: 100%;
    padding: 14px 16px 14px 44px;
    border: 2px solid var(--border-light);
    border-radius: var(--radius-medium);
    font-size: 14px;
    background: var(--bg-gray);
    transition: all 0.3s ease;
}

.message-form .field-input.textarea textarea {
    padding-left: 44px;
    min-height: 120px;
    resize: vertical;
}

.message-form .field-icon {
    position: absolute;
    left: 14px;
    color: var(--text-secondary);
    font-size: 16px;
}

.message-form .field-input input:focus,
.message-form .field-input textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(245, 140, 69, 0.15);
    background: white;
    transform: translateY(-1px);
}

.message-form .field-input input.has-error,
.message-form .field-input textarea.has-error {
    border-color: #ff6b35;
    box-shadow: 0 0 0 4px rgba(255, 107, 53, 0.15);
    background: #fff4ef;
}

.message-form-error {
    position: absolute;
    left: 0;
    top: calc(100% + 8px);
    background: #fffaf2;
    color: #d35400;
    border-radius: 10px;
    padding: 10px 14px;
    font-size: 13px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
    border: 1px solid rgba(255, 107, 53, 0.2);
    display: flex;
    align-items: center;
    gap: 8px;
    z-index: 5;
    min-width: 260px;
}

.message-form-error::before {
    content: '';
    position: absolute;
    top: -8px;
    left: 24px;
    border-width: 0 8px 8px 8px;
    border-style: solid;
    border-color: transparent transparent #fffaf2 transparent;
    filter: drop-shadow(0 -2px 2px rgba(0, 0, 0, 0.06));
}

.message-form-error .error-icon {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: #ff933b;
    color: white;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 600;
}

.message-form-error .error-text {
    flex: 1;
    line-height: 1.4;
}

.message-form .help-text {
    color: var(--text-secondary);
    font-size: 12px;
    margin-top: 8px;
    font-style: italic;
}

.message-form .form-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
    flex-wrap: wrap;
}

.message-form .form-actions .btn.btn-primary {
    width: auto;
    min-width: 200px;
    padding: 12px 32px;
    font-size: 14px;
}

.message-form .form-tip {
    color: var(--text-secondary);
    font-size: 12px;
    opacity: 0.8;
    margin-top: var(--spacing-lg);
    text-align: center;
}

.message-status {
    display: none;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    border-radius: 12px;
    font-size: 14px;
    min-width: 240px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
}

.message-status .status-icon {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.message-status.is-success {
    background: #f0f9f4;
    color: #1d8a4b;
    border: 1px solid rgba(29, 138, 75, 0.2);
}

.message-status.is-success .status-icon {
    background: #34c77b;
    color: white;
}

.message-status.is-success .status-icon::before {
    content: '✓';
    font-weight: 700;
    font-size: 12px;
}

.message-status.is-error {
    background: #fff5f0;
    color: #c0392b;
    border: 1px solid rgba(192, 57, 43, 0.2);
}

.message-status.is-error .status-icon {
    background: #ff7a45;
    color: white;
}

.message-status.is-error .status-icon::before {
    content: '!';
    font-weight: 700;
    font-size: 12px;
}

/* 返回顶部按钮优化 */
.scroll-to-top {
    position: fixed;
    bottom: 100px;
    right: 20px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: linear-gradient(135deg, #f58c45, #ff6b35);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 999;
    box-shadow: var(--shadow-medium);
}

.scroll-to-top.show {
    opacity: 1;
    visibility: visible;
}

.scroll-to-top:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-large);
}

.scroll-to-top i {
    font-size: 18px;
}

/* 移动端触摸滑动支持 */
@media (max-width: 768px) {
    .hero-section {
        aspect-ratio: 16/9;
    }
    
    .banner-caption {
        padding-left: 5%;
        padding-right: 5%;
    }
    
    .banner-caption .caption-inner {
        max-width: 90%;
        padding: 20px 24px;
    }
    
    .cases-stats {
        flex-direction: column;
        gap: var(--spacing-md);
        padding: 0 var(--spacing-md);
    }
    
    .stat-item {
        min-width: auto;
        padding: var(--spacing-lg);
    }
    
    .message-form {
        padding: var(--spacing-xl);
        margin: 0 var(--spacing-md);
    }
    
    .message-form .form-row {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .scroll-to-top {
        bottom: 80px;
        right: 16px;
        width: 44px;
        height: 44px;
    }
    
    .container {
        padding: 0 16px;
    }
}

/* 触摸滑动指示器 */
.banner-container {
    touch-action: pan-y pinch-zoom;
}

/* 平滑滚动 */
html {
    scroll-behavior: smooth;
}

/* 移动端适配 */
@media (max-width: 768px) {
    .banner-container { 
        height: 260px; 
        min-height: 260px; /* 移动端最小高度 */
    }
    .banner-slider {
        min-height: 260px; /* 移动端最小高度 */
    }
    .banner-item {
        min-height: 260px; /* 移动端最小高度 */
    }
    .banner-item img {
        min-height: 260px; /* 移动端最小高度 */
    }
    .banner-caption { 
        padding-left: 16px; 
    }
    .banner-caption .caption-inner { 
        max-width: 86%; 
        padding: 14px 16px; 
    }
    .banner-caption h2 { 
        font-size: 18px; 
    }
    .banner-caption p { 
        font-size: 12px; 
    }
}

/* 页面加载状态和错误提示样式 */
.page-loading {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.95);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 20px;
    z-index: 9999;
    backdrop-filter: blur(4px);
}

.page-loading .loading-spinner {
    width: 32px;
    height: 32px;
    border: 3px solid rgba(0, 0, 0, 0.1);
    border-top: 3px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.page-loading span {
    font-size: 16px;
    color: var(--text-secondary);
    font-weight: 500;
}

.page-error {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.95);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 24px;
    z-index: 9999;
    backdrop-filter: blur(4px);
}

.page-error .error-icon {
    font-size: 64px;
    animation: bounce 2s infinite;
}

.page-error .error-content {
    text-align: center;
    max-width: 400px;
    padding: 0 20px;
}

.page-error h3 {
    font-size: 24px;
    color: var(--text-primary);
    margin-bottom: 12px;
    font-weight: 600;
}

.page-error p {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 24px;
    line-height: 1.5;
}

.page-error .btn {
    padding: 12px 24px;
    font-size: 16px;
    font-weight: 600;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

/* 搜索建议样式 */
.search-suggestions {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: white;
    border: 1px solid #ddd;
    border-top: none;
    border-radius: 0 0 8px 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    z-index: 1000;
    max-height: 300px;
    overflow-y: auto;
}

.suggestion-item {
    padding: 12px 16px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 12px;
    transition: background-color 0.2s ease;
    border-bottom: 1px solid #f5f5f5;
}

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

.suggestion-item:hover,
.suggestion-item.active {
    background-color: #f8f9fa;
}

.suggestion-item i {
    color: #6c757d;
    font-size: 14px;
    width: 16px;
    text-align: center;
}

.suggestion-item span {
    color: #333;
    font-size: 14px;
}

/* 搜索框定位 */
.search-box {
    position: relative;
}

/* 加载动画优化 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInScale {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* 内容卡片动画 */
.content-card {
    animation: fadeInUp 0.6s ease-out;
}

.case-card {
    animation: fadeInScale 0.5s ease-out;
}

.feature-card {
    animation: slideInLeft 0.6s ease-out;
}

.feature-card:nth-child(even) {
    animation: slideInRight 0.6s ease-out;
}

/* 统计数字动画 */
.stat-item {
    animation: fadeInUp 0.8s ease-out;
}

.stat-item:nth-child(2) {
    animation-delay: 0.1s;
}

.stat-item:nth-child(3) {
    animation-delay: 0.2s;
}

/* 步骤动画 */
.step {
    animation: fadeInUp 0.6s ease-out;
}

.step:nth-child(2) {
    animation-delay: 0.1s;
}

.step:nth-child(3) {
    animation-delay: 0.2s;
}

.step:nth-child(4) {
    animation-delay: 0.3s;
}

/* 图片加载动画 */
.card-image img {
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.card-image img.loading {
    opacity: 0.6;
    transform: scale(0.98);
}

.card-image img.loaded {
    opacity: 1;
    transform: scale(1);
}

/* 悬停动画优化 */
.case-card:hover,
.content-card:hover,
.feature-card:hover {
    transform: translateY(-8px) scale(1.02);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 按钮动画优化 */
.btn {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s ease, height 0.6s ease;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn:active {
    transform: scale(0.95);
}

/* 响应式设计优化 */
@media (max-width: 1200px) {
    .container {
        max-width: 95%;
        padding: 0 0;
    }
    
    .hero-content h1 {
        font-size: 36px;
    }
    
    .features-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: var(--spacing-lg);
    }
}

@media (max-width: 992px) {
    .hero-section {
        aspect-ratio: auto;
        /* min-height: 500px; */
    }
    
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--spacing-lg);
    }
    
    .hero-content h1 {
        font-size: 32px;
    }
    
    .hero-actions {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .cases-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    }
    
    .content-grid {
        grid-template-columns: 1fr;
    }
    
    .content-column {
        gap: var(--spacing-md);
    }
}

@media (max-width: 768px) {
    .header-container {
        padding: 0 16px;
    }
    
    .search-box {
        display: none; /* 移动端隐藏搜索框 */
    }
    
    .hero-content h1 {
        font-size: 28px;
    }
    
    .hero-content p {
        font-size: 16px;
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-md);
    }
    
    .hero-actions .btn {
        width: 100%;
        max-width: 280px;
    }
    
    .cases-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .case-card {
        min-height: 250px;
    }
    
    .case-card .img-wrap { height: 180px; }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    .features-grid.features-grid--alt {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-md);
        max-width: 100%;
    }
    
    /* 移动端特性卡片优化 */
    .features-section {
        padding: var(--spacing-xl) 0;
    }
    
    .features-section .section-title {
        font-size: 22px;
        margin-bottom: var(--spacing-lg);
        padding: 0 var(--spacing-md);
    }
    
    .feature-card {
        padding: var(--spacing-md);
        margin: 0;
    }
    
    .feature-icon {
        width: 60px !important;
        height: 60px !important;
        margin-bottom: var(--spacing-xs) !important;
    }
    
    .feature-card h3 {
        font-size: 16px;
        margin-bottom: 6px;
        font-weight: 600;
        line-height: 1.3;
    }
    
    .feature-card p {
        font-size: 12px;
        line-height: 1.5;
        color: var(--text-secondary);
    }
    
    .steps {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .step {
        text-align: center;
    }
    
    .faq-list { grid-template-columns: 1fr; gap: var(--spacing-md); }
    .faq-item { 
        grid-template-columns: 1fr; 
        gap: var(--spacing-md); 
        padding: var(--spacing-md); 
        min-height: 200px; 
        height: 200px; 
        align-items: center;
    }
    /* 移动端统一布局：图片在上，内容在下 */
    .faq-item .faq-media { 
        order: 1; 
        text-align: center;
    }
    .faq-item .faq-content { 
        order: 2;
        padding: 0;
    }
    .faq-media img { 
        max-width: 120px; 
        max-height: 100px; 
        object-fit: contain; 
    }
    .faq-content h3 {
        font-size: 16px;
        line-height: 1.4;
        margin-bottom: var(--spacing-xs);
        word-wrap: break-word;
        overflow-wrap: break-word;
    }
    .faq-content p {
        font-size: 13px;
        line-height: 1.6;
        color: var(--text-secondary);
        word-wrap: break-word;
        overflow-wrap: break-word;
    }
    .message-form {
        padding: var(--spacing-lg);
    }
    
    .message-form .form-row {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    /* 移动端触摸优化 */
    .case-card,
    .content-card,
    .feature-card {
        -webkit-tap-highlight-color: transparent;
        touch-action: manipulation;
    }
    
    .btn {
        min-height: 44px; /* 触摸友好的按钮高度 */
        padding: 12px 20px;
    }
    
    /* 移动端导航优化 */
    .main-nav {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    .nav-menu {
        flex-wrap: nowrap;
        padding: 0 16px;
    }
    
    .nav-item {
        flex-shrink: 0;
        white-space: nowrap;
    }
}

@media (max-width: 480px) {
    .hero-content h1 {
        font-size: 24px;
    }
    
    .hero-content p {
        font-size: 14px;
    }
    
    .section-title {
        font-size: 20px;
    }
    
    /* 小屏手机特性卡片进一步优化 - 保持2列布局 */
    .features-section {
        padding: var(--spacing-lg) 0;
    }
    
    .features-section .section-title {
        font-size: 18px;
        margin-bottom: var(--spacing-md);
        padding: 0 var(--spacing-sm);
    }
    
    .features-grid.features-grid--alt {
        gap: var(--spacing-sm);
        padding: 0 var(--spacing-sm);
    }
    
    .feature-card {
        padding: var(--spacing-sm) var(--spacing-xs);
        margin: 0;
    }
    
    .feature-icon {
        width: 50px !important;
        height: 50px !important;
        margin-bottom: 6px !important;
    }
    
    .feature-card h3 {
        font-size: 14px;
        margin-bottom: 4px;
        line-height: 1.3;
    }
    
    .feature-card p {
        font-size: 11px;
        line-height: 1.4;
    }
    
    .case-card {
        min-height: 200px;
    }
    
    .case-card .img-wrap { height: 150px; }
    
    .case-info {
        padding: var(--spacing-md);
    }
    
    .case-info h3 {
        font-size: 16px;
    }
    
    .case-info p {
        font-size: 14px;
    }
    
    .stat-item {
        text-align: center;
    }
    
    .stat-number {
        font-size: 24px;
    }
    
    .stat-label {
        font-size: 14px;
    }
    
    .message-form {
        padding: var(--spacing-md);
        width: 100%;
        max-width: 100%;
    }
    
    /* 确保在线留言模块宽度与其他模块一致 */
    .contact-merged .container {
        padding: 0 var(--spacing-md);
    }
    
    .contact-form {
        width: 100%;
        max-width: 100%;
        box-sizing: border-box;
    }
    
    .faq-item {
        padding: var(--spacing-md);
        min-height: 180px;
        height: 180px;
    }
    
    .faq-media img {
        max-width: 100px;
        max-height: 80px;
        object-fit: contain;
    }
    
    .faq-content h3 {
        font-size: 15px;
        line-height: 1.3;
        margin-bottom: 8px;
    }
    
    .faq-content p {
        font-size: 12px;
        line-height: 1.5;
    }
    
    /* footer样式由footer.css统一管理，不在此处覆盖 */
}

/* 横屏模式优化 */
@media (orientation: landscape) and (max-height: 600px) {
    .hero-section {
        min-height: 300px;
    }
    
    .hero-content h1 {
        font-size: 24px;
        margin-bottom: var(--spacing-sm);
    }
    
    .hero-content p {
        font-size: 14px;
        margin-bottom: var(--spacing-sm);
    }
    
    .hero-actions {
        margin-top: var(--spacing-md);
    }
    
    .hero-actions .btn {
        padding: 8px 16px;
        font-size: 14px;
    }
}

/* 高分辨率屏幕优化 */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .case-card img,
    .content-card img {
        image-rendering: -webkit-optimize-contrast;
        image-rendering: crisp-edges;
    }
}

/* 减少动画（用户偏好） */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* 特性模块差异化风格 */
.features-section { padding: var(--spacing-xxl) 0; }
/* 桌面端保持一行三列 */
@media (min-width: 993px) {
    .features-grid.features-grid--alt { 
        grid-template-columns: repeat(3, 1fr);
        gap: var(--spacing-lg);
        width: 100%;
        max-width: none;
        margin: 0;
    }
}
.feature-icon { width: 144px; height: 144px; display: block; margin: 0 auto var(--spacing-sm); object-fit: contain; }

/* 不同卡片的差异化配色与背景 */
.feature-card { position: relative; overflow: hidden; }
.feature-card--target { 
    background: linear-gradient(135deg, #fff7f1, #ffe9dc);
    border: 1px solid #ffd3b8;
}
.feature-card--brand {
    background: linear-gradient(135deg, #f3f7ff, #e7efff);
    border: 1px solid #cfe0ff;
}
.feature-card--leads {
    background: linear-gradient(135deg, #ecfff6, #d6ffec);
    border: 1px solid #b6f5da;
}

/* 斜向装饰提升质感 */
.feature-card::after {
    content: '';
    position: absolute; inset: -40% -40% auto auto; height: 120px; width: 180px;
    background: rgba(255,255,255,0.35); filter: blur(10px); transform: rotate(30deg);
}

/* 与相邻模块区分：整体区域背景轻微条纹 */
.features-section {
    background-image: linear-gradient(90deg, rgba(0,0,0,0.015) 0 0),
                      linear-gradient(180deg, rgba(0,0,0,0.02), rgba(0,0,0,0));
}

/* 保留媒体查询占位删除，避免空规则 */

/* 合并联系模块（左联系/右留言） */
.contact-merged { padding: var(--spacing-xxl) 0; background: var(--bg-gray); }
.contact-merged .section-title { text-align: left; margin-bottom: var(--spacing-md); }

.contact-merged-grid {
    display: grid;
    grid-template-columns: 3fr 7fr; /* 左右3:7 */
    gap: var(--spacing-xxl);
    align-items: start;
}

.contact-intro { color: var(--text-secondary); margin-bottom: var(--spacing-lg); }

.contact-left-columns {
    display: grid;
    grid-template-columns: 1fr; /* 去掉二维码后单列更聚焦 */
    gap: var(--spacing-lg);
}

.contact-left-list { display: flex; flex-direction: column; gap: var(--spacing-md); }

.contact-item { display: flex; align-items: flex-start; gap: var(--spacing-md); }
.contact-item.no-icon { padding: var(--spacing-lg); background: #fff; border-radius: var(--radius-large); box-shadow: var(--shadow-light); }
.contact-item-content h3 { margin-bottom: 6px; font-weight: 700; color: var(--text-primary); }
.contact-item-content a { color: var(--primary-color); word-break: break-all; }

/* 原二维码区块已移除 */

/* 右侧表单 */
.contact-form { background: #fff; border-radius: var(--radius-large); box-shadow: var(--shadow-light); padding: var(--spacing-xxl); }
.btn-block { width: 100%; display: inline-flex; justify-content: center; }

/* 平板优化 */
@media (max-width: 992px) {
    .contact-merged-grid { grid-template-columns: 1fr; gap: var(--spacing-xl); }
    .contact-merged .section-title { text-align: center; }
    .contact-intro { text-align: center; }
    .contact-form { padding: var(--spacing-xl); }
}

/* 手机优化 */
@media (max-width: 768px) {
    .contact-left-columns { grid-template-columns: 1fr; gap: var(--spacing-md); }
    .contact-item.no-icon { padding: var(--spacing-lg); }
    .contact-merged-grid {
        gap: var(--spacing-md);
    }
    .contact-form { 
        padding: var(--spacing-md);
        width: 100%;
        max-width: 100%;
        margin: 0;
    }
    .contact-form .form-row { grid-template-columns: 1fr; gap: var(--spacing-md); }
    .btn-block { width: 100%; }
}

/* 入驻流程（卡片式） */
.onboarding-section .scenes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.onboarding-section .scene-card {
    position: relative;
    display: block;
    background: #fff;
    border-radius: var(--radius-large);
    overflow: hidden;
    box-shadow: var(--shadow-light);
    text-decoration: none;
    color: inherit;
    transition: transform .25s ease, box-shadow .25s ease;
}

.onboarding-section .scene-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-medium);
}

.onboarding-section .scene-image { position: relative; width: 100%; height: 200px; background: var(--bg-gray); display: flex; align-items: center; justify-content: center; }
.onboarding-section .scene-image img { width: 72%; max-width: 220px; height: 72%; object-fit: contain; }

.onboarding-section .scene-overlay { position: absolute; inset: 0; display: flex; align-items: flex-end; background: linear-gradient(180deg, rgba(0,0,0,0) 40%, rgba(0,0,0,.45) 100%); opacity: 0; transition: opacity .25s ease; }
.onboarding-section .scene-card:hover .scene-overlay { opacity: 1; }

.onboarding-section .scene-text { width: 100%; padding: 16px 18px; color: #fff; }
.onboarding-section .scene-title { font-size: 16px; font-weight: 700; margin-bottom: 6px; }
.onboarding-section .scene-desc { font-size: 13px; opacity: .9; line-height: 1.5; }

/* 平板与手机适配 */
@media (max-width: 992px) {
    .onboarding-section .scenes-grid { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: var(--spacing-md); }
    .onboarding-section .scene-image { height: 180px; }
}

@media (max-width: 768px) {
    .onboarding-section .scenes-grid { grid-template-columns: 1fr 1fr; gap: var(--spacing-md); }
    .onboarding-section .scene-image { height: 160px; }
    .onboarding-section .scene-text { padding: 14px; }
    .onboarding-section .scene-title { font-size: 15px; }
    .onboarding-section .scene-desc { font-size: 12px; }
}

@media (max-width: 480px) {
    .onboarding-section .scenes-grid { grid-template-columns: 1fr; }
    .onboarding-section .scene-image { height: 140px; }
}

/* 强制圆形加载动画 */
.circular-loading {
    width: 24px !important;
    height: 24px !important;
    border-radius: 50% !important;
    border: 2px solid rgba(0,0,0,0.12) !important;
    border-top-color: var(--primary-color) !important;
    animation: spin 0.9s linear infinite !important;
    display: block !important;
    position: absolute !important;
    top: 50% !important;
    left: 50% !important;
    transform: translate(-50%, -50%) !important;
    z-index: 2 !important;
    box-sizing: border-box !important;
    aspect-ratio: 1 !important;
    min-width: 24px !important;
    min-height: 24px !important;
    max-width: 24px !important;
    max-height: 24px !important;
}