/* 原有的根变量和基础样式保持不变 */
:root {
    --primary: #0ea5e9;
    --primary-dark: #0284c7;
    --primary-light: #38bdf8;
    --secondary: #6366f1;
    --success: #10b981;
    --bg-main: #0f172a;
    --bg-card: rgba(30, 41, 59, 0.5);
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --border: rgba(148, 163, 184, 0.1);
    --glow: rgba(14, 165, 233, 0.5);
}
/* ... 原有的样式代码 ... */
* { 
    margin: 0; 
    padding: 0; 
    box-sizing: border-box; 
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: var(--bg-main);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
    /* 防止移动端缩放 */
    -webkit-text-size-adjust: 100%;
    -ms-text-size-adjust: 100%;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 50%, var(--primary) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, var(--secondary) 0%, transparent 50%),
        radial-gradient(circle at 40% 20%, var(--primary-dark) 0%, transparent 50%);
    opacity: 0.1;
    z-index: -1;
}
/* 导航栏样式重构 - 美化版本 */
.navbar {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(148, 163, 184, 0.1);
    padding: 12px 0;
}
.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 50px;
}
/* 品牌标识美化 */
.nav-brand {
    display: flex;
    align-items: center;
    gap: 15px;
    flex-shrink: 0;
    text-decoration: none;
    color: inherit;
}
.brand-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, #8b5cf6 0%, #a855f7 50%, #c084fc 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 20px rgba(139, 92, 246, 0.3);
    position: relative;
    overflow: hidden;
}
.brand-icon::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, transparent 30%, rgba(255,255,255,0.1) 50%, transparent 70%);
    transform: translateX(-100%);
    transition: transform 0.6s;
}
.brand-icon:hover::before {
    transform: translateX(100%);
}
.brand-icon svg {
    width: 24px;
    height: 24px;
    color: white;
    z-index: 1;
}
.brand-title {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
    line-height: 1.2;
    background: linear-gradient(135deg, #f8fafc, #e2e8f0);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.brand-text p {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin: 2px 0 0 0;
    line-height: 1;
    opacity: 0.8;
}
/* 特色卖点美化 */
.nav-features {
    display: flex;
    gap: 30px;
    flex-shrink: 0;
}
.feature-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9rem;
    color: var(--text-primary);
    font-weight: 500;
    transition: all 0.3s ease;
    cursor: default;
}
.feature-item:hover {
    transform: translateY(-2px);
}
.feature-icon-bg {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
}
.feature-icon-bg:hover {
    transform: scale(1.05);
    box-shadow: 0 6px 20px rgba(0,0,0,0.15);
}
.safe-bg {
    background: linear-gradient(135deg, #10b981 0%, #059669 50%, #047857 100%);
}
.fast-bg {
    background: linear-gradient(135deg, #3b82f6 0%, #2563eb 50%, #1d4ed8 100%);
}
.fee-bg {
    background: linear-gradient(135deg, #8b5cf6 0%, #7c3aed 50%, #6d28d9 100%);
}
/* 特色卖点图标统一样式 */
.feature-icon {
    width: 48px;
    height: 48px;
    color: white;
    stroke-width: 2;
    fill: none;
    stroke: currentColor;
}
.feature-item span {
    font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
}
/* 导航菜单美化 */
.nav-menu {
    display: flex;
    gap: 6px;
    flex-shrink: 0;
}
.nav-link {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 10px 16px;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: 10px;
    font-weight: 500;
    font-size: 0.9rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}
.nav-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.1), rgba(99, 102, 241, 0.1));
    opacity: 0;
    transition: opacity 0.3s ease;
}
.nav-link:hover::before {
    opacity: 1;
}
.nav-link:hover {
    color: var(--text-primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(14, 165, 233, 0.2);
}
.nav-link.active {
    color: var(--primary-light);
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.15), rgba(99, 102, 241, 0.15));
    box-shadow: 0 4px 15px rgba(14, 165, 233, 0.25);
    border: 1px solid rgba(14, 165, 233, 0.3);
}
.nav-link.active::before {
    opacity: 1;
}
.nav-icon {
    width: 18px;
    height: 18px;
    stroke-width: 2;
    transition: all 0.3s ease;
    z-index: 1;
}
.nav-link:hover .nav-icon {
    transform: scale(1.1);
}
.nav-link span {
    z-index: 1;
}
/* 移动端菜单按钮美化 */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    cursor: pointer;
    padding: 8px;
    border-radius: 8px;
    transition: all 0.3s ease;
}
.nav-toggle:hover {
    background: rgba(14, 165, 233, 0.1);
}
.nav-toggle span {
    width: 24px;
    height: 3px;
    background: linear-gradient(135deg, var(--primary-light), var(--secondary));
    border-radius: 2px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
/* 移动端适配 */
@media (max-width: 1200px) {
    .nav-container {
        padding: 0 20px;
        gap: 35px;
    }
    
    .nav-features {
        gap: 25px;
    }
    
    .feature-item {
        font-size: 0.85rem;
    }
    
    .feature-icon-bg {
        width: 28px;
        height: 28px;
    }
    
    .feature-icon {
        width: 16px;
        height: 16px;
    }
}
@media (max-width: 992px) {
    .nav-features {
        display: none;
    }
    
    .nav-container {
        gap: 20px;
    }
}
@media (max-width: 768px) {
    .navbar {
        padding: 8px 0;
    }
    
    .nav-container {
        padding: 0 15px;
    }
    
    .brand-icon {
        width: 40px;
        height: 40px;
    }
    
    .brand-icon svg {
        width: 20px;
        height: 20px;
    }
    
    .brand-title {
        font-size: 1.2rem;
    }
    
    .brand-text p {
        font-size: 0.75rem;
    }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: rgba(15, 23, 42, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 20px;
        gap: 8px;
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        border-bottom: 1px solid var(--border);
        box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
        z-index: 1001; /* 添加这一行 */
        min-height: 200px; /* 添加这一行 */
        max-height: 80vh; /* 添加这一行 */
        overflow-y: auto; /* 添加这一行 */
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-link {
        padding: 15px 20px;
        font-size: 1rem;
        border-radius: 12px;
        justify-content: flex-start;
    }
    
    .nav-icon {
        width: 20px;
        height: 20px;
    }
    
    /* 确保导航按钮有足够大的点击区域 */
    .nav-toggle {
        display: flex;
        z-index: 1002; /* 添加这一行 */
        position: relative; /* 添加这一行 */
        min-width: 44px; /* 添加这一行 */
        min-height: 44px; /* 添加这一行 */
    }
    
    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(7px, 7px);
        background: linear-gradient(135deg, #ef4444, #dc2626);
    }
    
    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
        transform: scale(0);
    }
    
    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -7px);
        background: linear-gradient(135deg, #ef4444, #dc2626);
    }
}
@media (max-width: 480px) {
    .brand-title {
        font-size: 1.1rem;
    }
    
    .brand-text p {
        display: none;
    }
    
    .nav-container {
        gap: 15px;
    }
}
/* 增强的动画效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}
.nav-menu.active .nav-link {
    animation: fadeInUp 0.3s ease forwards;
}
.nav-menu.active .nav-link:nth-child(1) { animation-delay: 0.1s; }
.nav-menu.active .nav-link:nth-child(2) { animation-delay: 0.15s; }
.nav-menu.active .nav-link:nth-child(3) { animation-delay: 0.2s; }
.nav-menu.active .nav-link:nth-child(4) { animation-delay: 0.25s; }
/* 鼠标悬停时的微动画 */
@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}
.feature-icon-bg:hover {
    animation: pulse 0.6s ease-in-out;
}
/* 添加光泽效果 */
.nav-link.active::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
    transition: left 0.5s;
}
.nav-link.active:hover::after {
    left: 100%;
}
/* 调整容器顶部内边距，给导航栏留出空间 */
.container {
    padding-top: 20px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 20px;
}
/* ... 原有的其他样式保持不变 ... */
.hero {
    text-align: center;
    padding: 60px 0;
    position: relative;
}

.hero h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary-light), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero .subtitle {
    font-size: clamp(1rem, 3vw, 1.25rem);
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 40px;
    line-height: 1.5;
}

.hero .reminder {
    margin: 25px;
    color: var(--text-secondary);
    font-size: clamp(0.8rem, 2.5vw, 0.95rem);
    line-height: 1.4;
}

/* === 保证横幅样式 === */
.guarantee-banner {
    max-width: 600px;
    margin: 30px auto;
    padding: 0 20px;
}
.guarantee-content {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.15), rgba(5, 150, 105, 0.15));
    backdrop-filter: blur(10px);
    border: 1px solid rgba(16, 185, 129, 0.3);
    border-radius: 16px;
    padding: 18px 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(16, 185, 129, 0.1);
    transition: all 0.3s ease;
}
.guarantee-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(16, 185, 129, 0.1), transparent);
    transition: left 2s ease;
}
.guarantee-content:hover::before {
    left: 100%;
}
.guarantee-content:hover {
    border-color: rgba(16, 185, 129, 0.5);
    box-shadow: 0 8px 30px rgba(16, 185, 129, 0.2);
    transform: translateY(-2px);
}
.guarantee-icon {
    width: 28px;
    height: 28px;
    flex-shrink: 0;
    color: #10b981;
    filter: drop-shadow(0 2px 4px rgba(16, 185, 129, 0.3));
}
.guarantee-icon svg {
    width: 100%;
    height: 100%;
}
.guarantee-text {
    color: var(--text-primary);
    font-size: clamp(1rem, 2.5vw, 1.2rem);
    font-weight: 500;
    text-align: center;
    letter-spacing: 0.5px;
    line-height: 1.4;
}
.guarantee-text strong {
    color: #10b981;
    font-weight: 700;
    font-size: 1.1em;
    text-shadow: 0 2px 4px rgba(16, 185, 129, 0.3);
}
/* 响应式适配 */
@media (max-width: 768px) {
    .guarantee-banner {
        margin: 25px auto;
        padding: 0 15px;
    }
    
    .guarantee-content {
        padding: 15px 20px;
        gap: 10px;
        border-radius: 12px;
    }
    
    .guarantee-icon {
        width: 24px;
        height: 24px;
    }
    
    .guarantee-text {
        font-size: 1rem;
        letter-spacing: 0.3px;
    }
}
@media (max-width: 480px) {
    .guarantee-banner {
        margin: 20px auto;
        padding: 0 10px;
    }
    
    .guarantee-content {
        padding: 10px 12px;
        gap: 8px;
        flex-direction: column;
        text-align: center;
    }
    
    .guarantee-icon {
        width: 22px;
        height: 22px;
    }
    
    .guarantee-text {
        font-size: 0.95rem;
        line-height: 1.5;
    }
}
/* 可选：添加脉动效果 */
@keyframes gentle-pulse {
    0%, 100% {
        box-shadow: 0 4px 20px rgba(16, 185, 129, 0.1);
    }
    50% {
        box-shadow: 0 6px 25px rgba(16, 185, 129, 0.2);
    }
}
.guarantee-content {
    animation: gentle-pulse 3s ease-in-out infinite;
}
/* 暂停动画当用户悬停时 */
.guarantee-content:hover {
    animation-play-state: paused;
}

.btn-group {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 40px;
}

.btn {
    padding: 16px 40px;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    position: relative;
    overflow: hidden;
    border: none;
    cursor: pointer;
    /* 确保触摸友好 */
    min-height: 48px;
    min-width: 120px;
    justify-content: center;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    box-shadow: 0 4px 20px var(--glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 30px var(--glow);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid var(--primary);
}

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

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin: 0 0;
}

.feature-card {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 40px 30px;
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary);
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-icon svg {
    width: 30px;
    height: 30px;
    color: white;
}

.feature-card h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.feature-card p {
    color: var(--text-secondary);
    line-height: 1.8;
}

.steps-section {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border);
    border-radius: 24px;
    padding: 60px 40px;
    margin: 80px 0;
}

.section-title {
    text-align: center;
    font-size: clamp(2rem, 4vw, 2.5rem);
    margin-bottom: 50px;
    background: linear-gradient(135deg, var(--text-primary), var(--text-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.steps {
    max-width: 800px;
    margin: 0 auto;
}

.step {
    display: flex;
    align-items: flex-start;
    gap: 30px;
    margin-bottom: 40px;
    position: relative;
}

.step:not(:last-child)::after {
    content: '';
    position: absolute;
    left: 25px;
    top: 60px;
    bottom: -40px;
    width: 2px;
    background: linear-gradient(to bottom, var(--primary), transparent);
}

.step-number {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
    color: white;
    flex-shrink: 0;
}

.step-content h4 {
    font-size: 1.5rem;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.step-content p {
    color: var(--text-secondary);
    line-height: 1.8;
}

.highlight {
    color: var(--primary-light);
    font-weight: 600;
}

.faq-section {
    margin: 80px 0;
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 30px;
}

.faq-item {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 30px;
    transition: all 0.3s ease;
}

.faq-item:hover {
    border-color: var(--primary);
    transform: translateY(-2px);
}

.faq-question {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 10px;
}

.faq-question::before {
    content: 'Q';
    background: var(--primary);
    color: white;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    flex-shrink: 0;
}

.faq-answer {
    color: var(--text-secondary);
    line-height: 1.8;
    padding-left: 40px;
}

.video-section {
    margin: 80px 0;
    text-align: center;
}

.video-wrapper {
    max-width: 800px;
    margin: 0 auto;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

.video-wrapper video {
    width: 100%;
    display: block;
}

.cta-section {
    text-align: center;
    padding: 80px 20px;
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.1), rgba(99, 102, 241, 0.1));
    border-radius: 24px;
    margin: 80px 0;
}

.cta-section h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.cta-section p {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
}

/* 模态框样式 */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(10px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    padding: 20px;
}

.modal-overlay.visible {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text-primary);
    padding: 40px;
    border-radius: 24px;
    max-width: 500px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    transform: scale(0.9);
    transition: transform 0.3s ease;
    position: relative;
}

.modal-overlay.visible .modal-content {
    transform: scale(1);
}

.modal-actions {
    display: flex;
    gap: 15px;
    justify-content: center;
    margin-top: 30px;
}

.modal-btn {
    padding: 12px 30px;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    min-height: 48px;
}

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

.modal-btn-confirm:hover {
    background: var(--primary-dark);
}

.modal-btn-cancel {
    background: transparent;
    color: var(--text-secondary);
    border: 2px solid var(--border);
}

.modal-btn-cancel:hover {
    border-color: var(--text-secondary);
    color: var(--text-primary);
}

/* 模态框第二页的样式 */
.instruction-visual {
    background-color: #f7f8fa;
    border: 1px solid #e5e7eb;
    border-radius: 12px;
    padding: 24px;
    margin: 30px 0;
    color: #1f2937;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
}

.instruction-header {
    display: flex;
    align-items: center;
    color: #4b5563;
    font-weight: 500;
    font-size: 16px;
    margin-bottom: 20px;
    position: relative;
    padding-left: 14px;
}

.instruction-header::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 16px;
    background-color: #4A90E2;
    border-radius: 2px;
}

.instruction-options {
    display: flex;
    gap: 15px;
    justify-content: center;
}

.category-box {
    background-color: #ffffff;
    border: 1px solid #e5e7eb;
    border-radius:8px;
    padding:15px 20px;
    text-align: center;
    flex: 1;
    position: relative;
    transition: all 0.2s ease-in-out;
    box-shadow:0 2px 4px rgba(0,0,0,0.05);
}

.category-box .category-title {
    font-weight: 600;
    font-size: 1rem;
    color: #1f2937;
    margin-bottom: 4px;
}

.category-box .category-meta {
    font-size:.8rem;
    opacity:.8;
    margin-top:4px;
    color: #6b7280;
}

.category-box.highlighted {
    background-color: #4A90E2; 
    border-color: #4A90E2;
    color: #ffffff;
}
.category-box.highlighted .category-title,
.category-box.highlighted .category-meta {
    color: #ffffff;
}

.checkmark-icon {
    position: absolute;
    bottom: -2px;
    right: -2px;
    width: 24px;
    height: 24px;
}

.checkmark-icon svg {
    width: 100%;
    height: 100%;
}

/* START: 联系我们悬浮按钮和模态框样式 */

/* 悬浮操作按钮 (FAB) */
.contact-fab {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 20px var(--glow);
    cursor: pointer;
    z-index: 999;
    transition: all 0.3s ease;
}

.contact-fab:hover {
    transform: scale(1.1);
    box-shadow: 0 8px 30px var(--glow);
}

.contact-fab svg {
    width: 30px;
    height: 30px;
    color: white;
}

/* 联系方式模态框特定样式 */
#contact-modal .modal-content {
    max-width: 400px;
}

.contact-modal-header {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 25px;
}

.contact-modal-header .wechat-icon {
    width: 32px;
    height: 32px;
}

.qr-code-wrapper {
    background: #FFFFFF;
    border-radius: 16px;
    padding: 20px;
    margin: 20px auto;
    max-width: 240px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.qr-code-wrapper img {
    width: 100%;
    display: block;
    border-radius: 8px;
}

.wechat-id-text {
    text-align: center;
    margin-top: 20px;
    color: var(--text-secondary);
}

.wechat-id-text code {
    background: rgba(255, 255, 255, 0.1);
    padding: 4px 8px;
    border-radius: 6px;
    color: var(--primary-light);
    font-family: monospace;
}

/* 模态框右上角关闭按钮 */
.modal-close-btn {
    position: absolute;
    top: 20px;
    right: 20px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    min-height: 40px;
    min-width: 40px;
}

.modal-close-btn svg {
    width: 24px;
    height: 24px;
    color: var(--text-secondary);
    transition: color 0.3s ease;
}

.modal-close-btn:hover svg {
    color: var(--text-primary);
}

/* END: 联系我们悬浮按钮和模态框样式 */
/* === START: 按钮内序号样式 === */
/* .btn-step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    font-size: 0.9rem;
    font-weight: 700;
    margin-right: 10px;
    line-height: 1;
    transition: all 0.3s ease;
} */

/* 主按钮的序号样式 */
.btn-primary .btn-step-number {
    background: white;
    color: var(--primary);
}

/* 次要按钮的序号样式 */
.btn-secondary .btn-step-number {
    background: var(--primary);
    color: white;
}

/* 次要按钮悬停时，序号的样式也跟着变，保持一致性 */
.btn-secondary:hover .btn-step-number {
    background: white;
    color: var(--primary);
}
/* === END: 按钮内序号样式 === */


/* === START: 引导模态框样式 === */
#guidance-modal .modal-content {
    text-align: center;
}

#guidance-modal h3 {
    font-size: 1.8rem;
    margin-bottom: 20px;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

#guidance-modal h3 svg {
    width: 32px;
    height: 32px;
    color: var(--primary-light);
    flex-shrink: 0;
}

#guidance-modal p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    line-height: 1.7;
    margin-bottom: 30px;
}

#guidance-modal .highlight {
    color: var(--primary-light);
    font-weight: bold;
    background: rgba(14, 165, 233, 0.1);
    padding: 2px 6px;
    border-radius: 6px;
}

#guidance-modal .modal-btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    box-shadow: 0 4px 20px var(--glow);
    border: none;
}
#guidance-modal .modal-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 30px var(--glow);
}

#guidance-modal .have-key-link {
    color: var(--text-secondary); 
    font-size: 0.9rem; 
    text-decoration: none;
    margin-top: 25px;
    display: inline-block;
    transition: color 0.3s ease;
}
#guidance-modal .have-key-link:hover {
    color: var(--primary-light);
}
/* === END: 引导模态框样式 === */
/* === START: 引导模态框样式 (更新) === */

/* ... (保留之前添加的 #guidance-modal 相关样式) ... */

/* 确保 modal-actions 默认是水平排列的，但我们通过内联样式改成了垂直 */
#guidance-modal .modal-actions {
    display: flex;
    gap: 15px;
    justify-content: center;
    margin-top: 30px;
}

/* 模态框内的通用按钮样式 */
#guidance-modal .modal-btn {
    padding: 14px 20px;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
}

/* 模态框主按钮样式 (之前可能已有，这里确保一下) */
#guidance-modal .modal-btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    border: none;
    box-shadow: 0 4px 20px var(--glow);
}
#guidance-modal .modal-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 30px var(--glow);
}

/* 模态框次要按钮样式 (这是新增的核心样式) */
#guidance-modal .modal-btn-secondary {
    background: transparent;
    color: var(--text-secondary);
    border: 2px solid var(--border);
}
#guidance-modal .modal-btn-secondary:hover {
    border-color: var(--primary);
    background: rgba(14, 165, 233, 0.1);
    color: var(--primary-light);
}
/* === END: 引导模态框样式 (更新) === */



/* === START: 图文教程模态框样式 ===
#tutorial-modal .tutorial-modal-content {
    max-width: 800px;
    width: 95%;
    padding: 30px 40px;
}

.tutorial-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border);
}

.tutorial-header h3 {
    font-size: 1.8rem;
    color: var(--text-primary);
    margin: 0;
}

.tutorial-progress {
    font-size: 1rem;
    color: var(--text-secondary);
    background: rgba(14, 165, 233, 0.1);
    padding: 6px 12px;
    border-radius: 8px;
}

.tutorial-image-wrapper {
    width: 100%;
    margin-bottom: 25px;
    background: rgba(0,0,0,0.2);
    border-radius: 16px;
    overflow: hidden;
    position: relative;
    aspect-ratio: 4 / 3; 
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' width='64' height='64'%3E%3Cstyle%3E.spinner_V8m1%7Btransform-origin:center;animation:spinner_zKoa 2s linear infinite%7D.spinner_V8m1 circle%7Bstroke-linecap:round;animation:spinner_YpZS 1.5s ease-in-out infinite%7D@keyframes spinner_zKoa%7B100%25%7Btransform:rotate(360deg)%7D%7D@keyframes spinner_YpZS%7B0%25%7Bstroke-dasharray:0 150;stroke-dashoffset:0%7D47.5%25%7Bstroke-dasharray:42 150;stroke-dashoffset:-16%7D95%25,100%25%7Bstroke-dasharray:42 150;stroke-dashoffset:-59%7D%7D%3C/style%3E%3Cg class='spinner_V8m1'%3E%3Ccircle cx='12' cy='12' r='9.5' fill='none' stroke-width='3' stroke='%230ea5e9'/%3E%3C/g%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: center center;
    background-size: 64px;
}

.tutorial-image-wrapper img {
    width: 100%;
    height: 100%; 
    display: block;
    object-fit: contain; 
    transition: opacity 0.4s ease-in-out;
}

.tutorial-description {
    text-align: center;
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.7;
    min-height: 50px;
}

.tutorial-navigation {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 30px;
}

.tutorial-navigation .btn {
    padding: 12px 30px;
    font-size: 1rem;
}

.tutorial-navigation .btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
} */



/* 更多业务模块 */
.home-services-module {
    margin: 50px 0;
    padding: 30px;
    border: 1px solid var(--border);
    border-radius: 20px;
    background: var(--bg-card);
}

.home-services-group {
    margin-top: 24px;
}

.home-services-group + .home-services-group {
    margin-top: 28px;
    padding-top: 28px;
    border-top: 1px solid var(--border);
}

.home-services-group-header h3 {
    margin: 0 0 8px 0;
    font-size: 1.18rem;
    color: var(--text-primary);
}

.home-services-group-header p {
    margin: 0;
    color: var(--text-secondary);
    line-height: 1.65;
}

.home-services-grid {
    margin-top: 18px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
    gap: 18px;
}

.home-service-card {
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 18px;
    background: rgba(15, 23, 42, 0.35);
}

.home-service-card h3 {
    margin: 10px 0;
    font-size: 1.1rem;
}

.service-type-label {
    display: inline-block;
    font-size: 0.8rem;
    padding: 4px 10px;
    border-radius: 999px;
    background: rgba(14, 165, 233, 0.15);
    color: var(--primary-light);
}

.home-service-card p {
    color: var(--text-secondary);
    margin-bottom: 14px;
    line-height: 1.6;
}

.home-service-card .btn {
    display: inline-flex;
    width: auto;
    min-width: 122px;
    min-height: 42px;
    padding: 9px 16px;
    font-size: 0.92rem;
    border-radius: 12px;
}

.home-services-more {
    margin-top: 20px;
    text-align: center;
}

.cta-subhint {
    margin-top: 18px;
    margin-bottom: 0;
    font-size: 1rem;
    color: var(--text-secondary);
}

.cta-subhint a {
    color: var(--primary-light);
    font-weight: 600;
    text-decoration: none;
}

.cta-subhint a:hover {
    text-decoration: underline;
}

/* ======================================================= */
/* === START: 移动端响应式适配 (优化版本) === */
/* ======================================================= */

/* --- 针对平板设备 (768px - 1024px) --- */
@media (max-width: 1024px) and (min-width: 769px) {
    .container {
        padding: 30px 25px;
    }
    
    .hero h1 {
        font-size: 3.2rem;
    }
    
    .btn {
        padding: 14px 32px;
    }
    
    .features {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: 25px;
    }
}

/* --- 针对平板及更小设备 (如iPad竖屏) --- */
@media (max-width: 992px) {
    
    .trust-badges {
        gap: 20px 30px;
    }
    
    .faq-grid {
        grid-template-columns: 1fr;
    }
}

/* --- 针对手机设备 (≤768px) --- */
@media (max-width: 768px) {
    .container {
        padding: 20px 15px;
    }

    .hero {
        padding: 40px 0;
    }

    .hero h1 {
        font-size: 2.2rem;
        line-height: 1.3;
    }
    .hero .subtitle {
        font-size: 1.1rem;
        line-height: 1.6;
        margin-bottom: 30px;
    }
    .hero .reminder {
        font-size: 0.9rem;
        margin: 20px 10px;
    }
    
    .btn {
        padding: 14px 24px;
        font-size: 1rem;
        min-height: 50px;
    }
    
    .btn-group {
        gap: 15px;
        flex-direction: column;
        align-items: center;
    }
    
    .btn-group .btn {
        width: 100%;
        max-width: 280px;
    }

    .trust-badges {
        gap: 15px 20px;
        margin: 25px 0;
    }
    .trust-badge {
        font-size: 0.9rem;
    }
    .trust-badge strong {
        font-size: 1.3rem;
    }
    
    .features {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .feature-card {
        padding: 30px 25px;
    }
    
    .feature-icon {
        width: 50px;
        height: 50px;
    }
    
    .feature-icon svg {
        width: 26px;
        height: 26px;
    }

    .section-title {
        font-size: 2rem;
        margin-bottom: 30px;
    }
    
    .steps-section {
        padding: 40px 20px;
        margin: 60px 0;
    }
    
    .step {
        gap: 20px;
    }
    
    .step-number {
        width: 40px;
        height: 40px;
        font-size: 1.3rem;
    }
    
    .step:not(:last-child)::after {
        left: 20px;
        top: 50px;
    }
    
    .step-content h4 {
        font-size: 1.3rem;
    }
    
    .step-content p {
        font-size: 0.95rem;
        line-height: 1.7;
    }
    
    .faq-section {
        margin: 60px 0;
    }
    
    .faq-grid {
        gap: 20px;
    }
    
    .faq-item {
        padding: 25px 20px;
    }
    
    .faq-question {
        font-size: 1.1rem;
        margin-bottom: 12px;
    }
    
    .faq-answer {
        padding-left: 40px;
        font-size: 0.95rem;
    }

    .video-section {
        margin: 60px 0;
    }

    .cta-section {
        padding: 50px 20px;
        margin: 60px 0;
    }
    .cta-section h2 {
        font-size: 2rem;
    }
    .cta-section p {
        font-size: 1.1rem;
    }

    /* 模态框适配 */
    .modal-overlay {
        padding: 15px;
    }
    
    .modal-content {
        padding: 30px 20px;
        border-radius: 20px;
        max-height: 85vh;
    }
    
    .modal-actions {
        flex-direction: column;
        align-items: stretch;
        gap: 12px;
    }
    
    .modal-btn {
        padding: 14px;
        min-height: 50px;
    }
    
    /* 购买选项模态框适配 */
    .instruction-options {
        flex-direction: column;
        gap: 12px;
    }
    
    .category-box {
        padding: 12px 16px;
    }
    
    /* 悬浮按钮位置微调 */
    .contact-fab {
        width: 50px;
        height: 50px;
        bottom: 20px;
    }
    .contact-fab {
        right: 20px;
    }
    .contact-fab svg {
        width: 24px;
        height: 24px;
    }
    
    /* 图文教程模态框适配
    #tutorial-modal .tutorial-modal-content {
        padding: 20px 15px;
        max-width: none;
        width: 95%;
    }
    
    .tutorial-header {
        flex-direction: column;
        gap: 15px;
        align-items: flex-start;
        margin-bottom: 20px;
        padding-bottom: 15px;
    }
    
    .tutorial-header h3 {
        font-size: 1.5rem;
    }
    
    .tutorial-progress {
        font-size: 0.9rem;
        padding: 4px 8px;
    }
    
    .tutorial-image-wrapper {
        margin-bottom: 20px;
        border-radius: 12px;
    }
    
    .tutorial-description {
        font-size: 1rem;
        line-height: 1.6;
        min-height: 60px;
    }
    
    .tutorial-navigation {
        gap: 10px;
        margin-top: 20px;
    }
    
    .tutorial-navigation .btn {
        padding: 10px 15px;
        font-size: 0.9rem;
        flex: 1;
    }
    
    .tutorial-navigation .btn svg {
        width: 16px;
        height: 16px;
    }
     */
    /* 联系模态框适配 */
    #contact-modal .modal-content {
        max-width: 350px;
        padding: 25px 20px;
    }
    
    .qr-code-wrapper {
        max-width: 200px;
        padding: 15px;
    }
    
    .contact-modal-header {
        font-size: 1.3rem;
        margin-bottom: 20px;
    }
}

/* --- 针对超小屏幕设备 (≤480px) --- */
@media (max-width: 480px) {
    .container {
        padding: 15px 10px;
    }
    
    .hero {
        padding: 30px 0;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero .subtitle {
        font-size: 1rem;
    }
    
    .hero .reminder {
        font-size: 0.85rem;
        margin: 15px 5px;
    }
    
    .btn {
        padding: 12px 20px;
        font-size: 0.95rem;
        min-height: 48px;
    }
    
    .btn-group .btn {
        max-width: 100%;
    }
    
    .trust-badges {
        gap: 10px 15px;
        justify-content: space-around;
    }
    
    .trust-badge {
        font-size: 0.8rem;
        gap: 6px;
    }
    
    .trust-badge strong {
        font-size: 1.2rem;
    }
    
    .feature-card {
        padding: 25px 20px;
    }
    
    .feature-card h3 {
        font-size: 1.2rem;
    }
    
    .feature-card p {
        font-size: 0.9rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .steps-section {
        padding: 30px 15px;
        border-radius: 20px;
    }
    
    .step-content h4 {
        font-size: 1.2rem;
    }
    
    .faq-item {
        padding: 20px 15px;
    }
    
    .faq-question {
        font-size: 1rem;
    }
    
    .faq-answer {
        font-size: 0.9rem;
        padding-left: 35px;
    }
    
    .cta-section {
        padding: 40px 15px;
    }
    
    .cta-section h2 {
        font-size: 1.8rem;
    }
    
    .cta-section p {
        font-size: 1rem;
    }
    
    /* 模态框超小屏适配 */
    .modal-overlay {
        padding: 10px;
    }
    
    .modal-content {
        padding: 25px 15px;
    }
    
    /* 悬浮按钮更小 */
    .contact-fab {
        width: 45px;
        height: 45px;
        bottom: 15px;
    }
    
    .contact-fab {
        right: 15px;
    }
    
    .contact-fab svg {
        width: 20px;
        height: 20px;
    }
    
    /* 图文教程超小屏适配
    #tutorial-modal .tutorial-modal-content {
        padding: 15px 10px;
    }
    
    .tutorial-header h3 {
        font-size: 1.3rem;
    }
    
    .tutorial-description {
        font-size: 0.95rem;
        min-height: 70px;
    }
    
    .tutorial-navigation .btn {
        padding: 8px 12px;
        font-size: 0.85rem;
    } */
    
    /* 联系模态框超小屏适配 */
    #contact-modal .modal-content {
        max-width: 320px;
        padding: 20px 15px;
    }
    
    .qr-code-wrapper {
        max-width: 180px;
        padding: 12px;
    }
    
    .contact-modal-header {
        font-size: 1.2rem;
        margin-bottom: 15px;
    }
}

/* --- 针对横屏模式的优化 --- */
@media (max-height: 600px) and (orientation: landscape) {
    .hero {
        padding: 20px 0;
    }
    
    .steps-section, .faq-section, .video-section, .cta-section {
        margin: 40px 0;
    }
    
    .steps-section {
        padding: 30px 20px;
    }
    
    /* 模态框在横屏时的适配 */
    .modal-content {
        max-height: 80vh;
        overflow-y: auto;
    }
    
    .tutorial-image-wrapper {
        aspect-ratio: 16 / 9; /* 横屏时使用更宽的比例 */
    }
}

/* ======================================================= */
/* === END: 移动端响应式适配 === */
/* ======================================================= */
/* === 联系客服模态框样式 === */
#contact-service-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 2000;
    opacity: 0;
    transition: opacity 0.3s ease;
}
#contact-service-modal.visible {
    display: flex;
    opacity: 1;
}
.contact-service-content {
    background: white;
    border-radius: 20px;
    padding: 30px;
    max-width: 400px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    transform: scale(0.8);
    transition: transform 0.3s ease;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}
#contact-service-modal.visible .contact-service-content {
    transform: scale(1);
}
.contact-service-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    color: #333;
}
.contact-service-header h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin: 0;
    color: #333;
}
.contact-service-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: #999;
    padding: 5px;
    border-radius: 50%;
    transition: all 0.3s ease;
}
.contact-service-close:hover {
    background: #f5f5f5;
    color: #666;
}
.contact-service-desc {
    text-align: center;
    color: #666;
    font-size: 1rem;
    margin-bottom: 25px;
    line-height: 1.5;
}
.wechat-info {
    text-align: center;
    margin-bottom: 20px;
}
.wechat-id {
    font-size: 1.1rem;
    color: #333;
    margin-bottom: 20px;
}
.wechat-id .id-text {
    color: #007AFF;
    font-weight: 600;
    font-size: 1.2rem;
}
.qr-code-container {
    background: #f8f9fa;
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 20px;
    text-align: center;
}
.qr-code-container img {
    width: 200px;
    height: 200px;
    border-radius: 8px;
    display: block;
    margin: 0 auto;
}
.contact-service-tips {
    background: #e3f2fd;
    border-radius: 10px;
    padding: 15px;
    margin-top: 20px;
}
.tip-item {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
    color: #1976d2;
    font-size: 0.9rem;
}
.tip-item:last-child {
    margin-bottom: 0;
}
.tip-icon {
    width: 16px;
    height: 16px;
    background: #1976d2;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 0.7rem;
    flex-shrink: 0;
}
/* 响应式适配 */
@media (max-width: 480px) {
    .contact-service-content {
        padding: 25px 20px;
        margin: 20px;
        width: auto;
    }
    
    .qr-code-container img {
        width: 160px;
        height: 160px;
    }
    
    .contact-service-header h3 {
        font-size: 1.3rem;
    }
    
    .contact-service-desc {
        font-size: 0.95rem;
    }
}
/* === START: 图文教程模态框样式 ===
#tutorial-modal .tutorial-modal-content {
    max-width: 800px;
    width: 95%;
    padding: 30px 40px;
}
.tutorial-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border);
}
.tutorial-header h3 {
    font-size: 1.8rem;
    color: var(--text-primary);
    margin: 0;
}
.tutorial-progress {
    font-size: 1rem;
    color: var(--text-secondary);
    background: rgba(14, 165, 233, 0.1);
    padding: 6px 12px;
    border-radius: 8px;
}
.tutorial-content {
    margin-bottom: 30px;
}
.tutorial-image-wrapper {
    width: 100%;
    margin-bottom: 25px;
    background: rgba(0,0,0,0.2);
    border-radius: 16px;
    overflow: hidden;
    position: relative;
    aspect-ratio: 4 / 3; 
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' width='64' height='64'%3E%3Cstyle%3E.spinner_V8m1%7Btransform-origin:center;animation:spinner_zKoa 2s linear infinite%7D.spinner_V8m1 circle%7Bstroke-linecap:round;animation:spinner_YpZS 1.5s ease-in-out infinite%7D@keyframes spinner_zKoa%7B100%25%7Btransform:rotate(360deg)%7D%7D@keyframes spinner_YpZS%7B0%25%7Bstroke-dasharray:0 150;stroke-dashoffset:0%7D47.5%25%7Bstroke-dasharray:42 150;stroke-dashoffset:-16%7D95%25,100%25%7Bstroke-dasharray:42 150;stroke-dashoffset:-59%7D%7D%3C/style%3E%3Cg class='spinner_V8m1'%3E%3Ccircle cx='12' cy='12' r='9.5' fill='none' stroke-width='3' stroke='%230ea5e9'/%3E%3C/g%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: center center;
    background-size: 64px;
}
.tutorial-image-wrapper img {
    width: 100%;
    height: 100%; 
    display: block;
    object-fit: contain; 
    transition: opacity 0.4s ease-in-out;
}
.tutorial-description {
    text-align: center;
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.7;
    min-height: 50px;
}
.tutorial-navigation {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 30px;
}
.tutorial-navigation .btn {
    padding: 12px 30px;
    font-size: 1rem;
}
.tutorial-navigation .btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}
.tutorial-dots {
    display: flex;
    gap: 8px;
}
.dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transition: all 0.3s ease;
    cursor: pointer;
}
.dot.active {
    background: var(--primary);
    transform: scale(1.2);
}
.dot:hover {
    background: var(--primary-light);
} */
/* 移动端适配 */
/* @media (max-width: 768px) {
    #tutorial-modal .tutorial-modal-content {
        padding: 20px 15px;
        max-width: none;
        width: 95%;
    }
    
    .tutorial-header {
        flex-direction: column;
        gap: 15px;
        align-items: flex-start;
        margin-bottom: 20px;
        padding-bottom: 15px;
    }
    
    .tutorial-header h3 {
        font-size: 1.5rem;
    }
    
    .tutorial-progress {
        font-size: 0.9rem;
        padding: 4px 8px;
    }
    
    .tutorial-image-wrapper {
        margin-bottom: 20px;
        border-radius: 12px;
    }
    
    .tutorial-description {
        font-size: 1rem;
        line-height: 1.6;
        min-height: 60px;
    }
    
    .tutorial-navigation {
        gap: 10px;
        margin-top: 20px;
    }
    
    .tutorial-navigation .btn {
        padding: 10px 15px;
        font-size: 0.9rem;
        flex: 1;
    }
    
    .tutorial-navigation .btn svg {
        width: 16px;
        height: 16px;
    }
    
    .tutorial-dots {
        gap: 6px;
    }
    
    .dot {
        width: 8px;
        height: 8px;
    }
}
@media (max-width: 480px) {
    .tutorial-header {
        text-align: center;
        align-items: center;
    }
    
    .tutorial-header h3 {
        font-size: 1.3rem;
    }
    
    .tutorial-description {
        font-size: 0.95rem;
        min-height: 70px;
    }
    
    .tutorial-navigation .btn {
        padding: 8px 12px;
        font-size: 0.85rem;
    }
} */
/* === END: 图文教程模态框样式 === */
/* === START: 充值步骤说明样式 (设计师版 - 居中优化) === */
.recharge-steps-guide {
    background: rgba(255, 255, 255, 0.03);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 12px;
    padding: 16px 20px;
    margin: 20px auto;
    max-width: 700px;
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.recharge-steps-guide::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, #0ea5e9, #3b82f6);
    border-radius: 12px 12px 0 0;
}

.guide-title {
    text-align: center;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 20px 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.guide-title-icon {
    width: 20px;
    height: 20px;
    color: #0ea5e9;
    flex-shrink: 0;
}

.steps-container {
    display: flex;
    gap: 40px;
    align-items: center;
    position: relative;
    justify-content: center;
}

.guide-step {
    flex: 1;
    max-width: 280px;
    text-align: center; /* 让内容居中 */
    position: relative;
    padding: 12px;
    border-radius: 8px;
    transition: all 0.2s ease;
    background: rgba(255, 255, 255, 0.01);
    border: 1px solid transparent;
}

.guide-step:hover {
    background: rgba(14, 165, 233, 0.05);
    border-color: rgba(14, 165, 233, 0.1);
    transform: translateY(-1px);
}

/* 标题部分居中显示 */
.guide-step-header {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-bottom: 8px;
}

.guide-step-number {
    width: 24px;
    height: 24px;
    background: linear-gradient(135deg, #0ea5e9, #3b82f6);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    font-weight: 600;
    color: white;
    flex-shrink: 0;
    box-shadow: 0 2px 8px rgba(14, 165, 233, 0.3);
    transition: all 0.2s ease;
}

.guide-step-content h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
    line-height: 1.2;
}

.guide-step:hover .guide-step-number {
    transform: scale(1.05);
    box-shadow: 0 3px 12px rgba(14, 165, 233, 0.4);
}

.guide-step-content p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.4;
    margin: 8px 0 0 0;
    opacity: 0.85;
}

.guide-step-content .highlight {
    color: #0ea5e9;
    font-weight: 600;
    background: rgba(14, 165, 233, 0.1);
    padding: 1px 4px;
    border-radius: 4px;
    transition: background 0.2s ease;
}

.guide-step-content .highlight:hover {
    background: rgba(14, 165, 233, 0.15);
}

/* 更美观的连接线设计 */
.steps-container::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 24px;
    width: 80px;
    height: 1px;
    background: linear-gradient(90deg, transparent, #0ea5e9, #3b82f6, transparent);
    transform: translateX(-50%);
    z-index: 1;
}

.steps-container::after {
    content: '';
    position: absolute;
    left: 50%;
    top: 21px;
    width: 8px;
    height: 8px;
    background: radial-gradient(circle, #0ea5e9, #3b82f6);
    border-radius: 50%;
    transform: translateX(-50%);
    z-index: 2;
    box-shadow: 0 0 8px rgba(14, 165, 233, 0.4);
    animation: pulse-dot 2s infinite ease-in-out;
}

@keyframes pulse-dot {
    0%, 100% {
        opacity: 0.6;
        transform: translateX(-50%) scale(1);
    }
    50% {
        opacity: 1;
        transform: translateX(-50%) scale(1.2);
    }
}

/* 整体悬停效果 */
.recharge-steps-guide:hover {
    border-color: rgba(14, 165, 233, 0.15);
    box-shadow: 0 6px 30px rgba(0, 0, 0, 0.12);
    transition: all 0.3s ease;
}

/* === 响应式设计 === */
@media (max-width: 768px) {
    .recharge-steps-guide {
        padding: 14px 16px;
        margin: 16px auto;
        max-width: 420px;
    }
    
    .guide-title {
        font-size: 1rem;
        margin-bottom: 16px;
        gap: 6px;
    }
    
    .guide-title-icon {
        width: 18px;
        height: 18px;
    }
    
    .steps-container {
        flex-direction: column;
        gap: 20px;
    }
    
    .steps-container::before,
    .steps-container::after {
        display: none;
    }
    
    /* 移动端垂直连接线 */
    .guide-step:not(:last-child)::after {
        content: '';
        position: absolute;
        left: 50%;
        bottom: -10px;
        width: 1px;
        height: 20px;
        background: linear-gradient(180deg, #0ea5e9, transparent);
        transform: translateX(-50%);
    }
    
    .guide-step:not(:last-child)::before {
        content: '';
        position: absolute;
        left: 50%;
        bottom: -6px;
        width: 4px;
        height: 4px;
        background: #0ea5e9;
        border-radius: 50%;
        transform: translateX(-50%);
        box-shadow: 0 0 4px rgba(14, 165, 233, 0.4);
    }
    
    .guide-step {
        gap: 8px;
        padding: 10px;
        max-width: none;
    }
    
    .guide-step-number {
        width: 22px;
        height: 22px;
        font-size: 0.85rem;
    }
    
    .guide-step-content h4 {
        font-size: 0.95rem;
    }
    
    .guide-step-content p {
        font-size: 0.85rem;
        line-height: 1.3;
        margin-top: 6px;
    }
}

@media (max-width: 480px) {
    .recharge-steps-guide {
        padding: 12px 14px;
        margin: 14px auto;
        max-width: 360px;
        border-radius: 10px;
    }
    
    .guide-title {
        font-size: 0.95rem;
        margin-bottom: 14px;
        gap: 5px;
    }
    
    .guide-title-icon {
        width: 16px;
        height: 16px;
    }
    
    .steps-container {
        gap: 16px;
    }
    
    .guide-step {
        padding: 8px;
    }
    
    .guide-step-number {
        width: 20px;
        height: 20px;
        font-size: 0.8rem;
    }
    
    .guide-step-content h4 {
        font-size: 0.9rem;
    }
    
    .guide-step-content p {
        font-size: 0.8rem;
        margin-top: 5px;
    }
    
    .guide-step-content .highlight {
        padding: 0.5px 3px;
        border-radius: 3px;
    }
}

/* 微动画优化 */
@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.recharge-steps-guide {
    animation: slideIn 0.5s ease-out;
}

/* === END: 充值步骤说明样式 (设计师版 - 居中优化) === */
/* === START: SEO内容区域样式 === */
.seo-content-section {
    margin: 80px 0;
    padding: 60px 40px;
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border);
    border-radius: 24px;
    position: relative;
    overflow: hidden;
}

.seo-content-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    border-radius: 24px 24px 0 0;
}

/* 为什么选择我们区域 */
.why-choose-us {
    margin-bottom: 80px;
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.advantage-card {
    background: rgba(255, 255, 255, 0.02);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 16px;
    padding: 30px 25px;
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.advantage-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.advantage-card:hover {
    transform: translateY(-5px);
    border-color: rgba(14, 165, 233, 0.3);
    box-shadow: 0 10px 40px rgba(14, 165, 233, 0.15);
}

.advantage-card:hover::before {
    transform: scaleX(1);
}

.advantage-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 20px rgba(14, 165, 233, 0.3);
    transition: all 0.3s ease;
}

.advantage-card:hover .advantage-icon {
    transform: scale(1.1);
    box-shadow: 0 6px 30px rgba(14, 165, 233, 0.4);
}

.advantage-icon svg {
    width: 30px;
    height: 30px;
    color: white;
}

.advantage-card h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 15px;
    line-height: 1.3;
}

.advantage-card p {
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: 0.95rem;
}

/* SEO问答区域 */
.seo-text-content {
    border-top: 1px solid var(--border);
    padding-top: 60px;
}

.seo-qa-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
    margin-top: 40px;
}

.seo-qa-item {
    background: rgba(255, 255, 255, 0.02);
    backdrop-filter: blur(5px);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 12px;
    padding: 25px 20px;
    transition: all 0.3s ease;
}

.seo-qa-item:hover {
    background: rgba(255, 255, 255, 0.04);
    border-color: rgba(14, 165, 233, 0.2);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.seo-qa-item h3 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.seo-qa-item h3::before {
    content: 'Q';
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    font-weight: bold;
    flex-shrink: 0;
    box-shadow: 0 2px 8px rgba(14, 165, 233, 0.3);
}

.seo-qa-item p {
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: 0.95rem;
    margin-left: 38px;
}

/* 响应式适配 */
@media (max-width: 768px) {
    .seo-content-section {
        margin: 60px 0;
        padding: 40px 25px;
        border-radius: 20px;
    }
    
    .why-choose-us {
        margin-bottom: 60px;
    }
    
    .advantages-grid {
        grid-template-columns: 1fr;
        gap: 20px;
        margin-top: 30px;
    }
    
    .advantage-card {
        padding: 25px 20px;
    }
    
    .advantage-icon {
        width: 50px;
        height: 50px;
        margin-bottom: 15px;
    }
    
    .advantage-icon svg {
        width: 26px;
        height: 26px;
    }
    
    .advantage-card h3 {
        font-size: 1.2rem;
        margin-bottom: 12px;
    }
    
    .advantage-card p {
        font-size: 0.9rem;
    }
    
    .seo-text-content {
        padding-top: 40px;
    }
    
    .seo-qa-grid {
        grid-template-columns: 1fr;
        gap: 20px;
        margin-top: 30px;
    }
    
    .seo-qa-item {
        padding: 20px 15px;
    }
    
    .seo-qa-item h3 {
        font-size: 1.1rem;
        margin-bottom: 10px;
    }
    
    .seo-qa-item h3::before {
        width: 24px;
        height: 24px;
        font-size: 0.8rem;
    }
    
    .seo-qa-item p {
        font-size: 0.9rem;
        margin-left: 34px;
    }
}

@media (max-width: 480px) {
    .seo-content-section {
        padding: 30px 20px;
    }
    
    .advantage-card {
        padding: 20px 15px;
    }
    
    .advantage-card h3 {
        font-size: 1.1rem;
    }
    
    .seo-qa-item {
        padding: 18px 15px;
    }
    
    .seo-qa-item h3 {
        font-size: 1rem;
        gap: 8px;
    }
    
    .seo-qa-item p {
        margin-left: 32px;
        font-size: 0.85rem;
    }
}
/* === END: SEO内容区域样式 === */
/* === START: 相关页面链接区域样式 === */
.related-pages {
    margin: 80px 0 60px 0;
    padding: 50px 40px;
    background: rgba(255, 255, 255, 0.02);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 24px;
    position: relative;
    overflow: hidden;
}
.related-pages::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--secondary), var(--primary));
    border-radius: 24px 24px 0 0;
}
.related-pages-container {
    max-width: 1200px;
    margin: 0 auto;
}
.related-pages-subtitle {
    text-align: center;
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin: -10px auto 40px;
    max-width: 500px;
    line-height: 1.6;
}
.related-pages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin-top: 40px;
}
.related-page-card {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 25px 30px;
    background: rgba(255, 255, 255, 0.03);
    backdrop-filter: blur(5px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    text-decoration: none;
    color: inherit;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    cursor: pointer;
}
.related-page-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(14, 165, 233, 0.1), transparent);
    transition: left 0.5s ease;
}
.related-page-card:hover::before {
    left: 100%;
}
.related-page-card:hover {
    transform: translateY(-3px);
    border-color: rgba(14, 165, 233, 0.3);
    background: rgba(14, 165, 233, 0.05);
    box-shadow: 0 8px 30px rgba(14, 165, 233, 0.15);
}
.related-page-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    box-shadow: 0 4px 15px rgba(14, 165, 233, 0.3);
    transition: all 0.3s ease;
}
.related-page-card:hover .related-page-icon {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(14, 165, 233, 0.4);
}
.related-page-icon svg {
    width: 24px;
    height: 24px;
    color: white;
}
.related-page-content {
    flex: 1;
    min-width: 0;
}
.related-page-content h3 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 6px 0;
    line-height: 1.3;
}
.related-page-content p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.5;
    margin: 0;
    opacity: 0.8;
}
.related-page-card:hover .related-page-content p {
    opacity: 1;
    color: var(--text-primary);
}
.related-page-arrow {
    width: 20px;
    height: 20px;
    color: var(--text-secondary);
    transition: all 0.3s ease;
    flex-shrink: 0;
}
.related-page-card:hover .related-page-arrow {
    color: var(--primary-light);
    transform: translateX(5px);
}
.related-page-arrow svg {
    width: 100%;
    height: 100%;
}
/* 添加悬停时的微动画 */
@keyframes cardGlow {
    0%, 100% {
        box-shadow: 0 4px 15px rgba(14, 165, 233, 0.1);
    }
    50% {
        box-shadow: 0 6px 25px rgba(14, 165, 233, 0.2);
    }
}
.related-page-card:hover {
    animation: cardGlow 2s ease-in-out infinite;
}
/* 响应式适配 */
@media (max-width: 992px) {
    .related-pages-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 16px;
    }
}
@media (max-width: 768px) {
    .related-pages {
        margin: 60px 0 40px 0;
        padding: 40px 25px;
        border-radius: 20px;
    }
    
    .related-pages-subtitle {
        font-size: 1rem;
        margin-bottom: 30px;
    }
    
    .related-pages-grid {
        grid-template-columns: 1fr;
        gap: 15px;
        margin-top: 30px;
    }
    
    .related-page-card {
        padding: 20px 25px;
        gap: 15px;
        border-radius: 12px;
    }
    
    .related-page-icon {
        width: 45px;
        height: 45px;
        border-radius: 10px;
    }
    
    .related-page-icon svg {
        width: 22px;
        height: 22px;
    }
    
    .related-page-content h3 {
        font-size: 1.1rem;
        margin-bottom: 4px;
    }
    
    .related-page-content p {
        font-size: 0.85rem;
    }
    
    .related-page-arrow {
        width: 18px;
        height: 18px;
    }
}
@media (max-width: 480px) {
    .related-pages {
        padding: 30px 20px;
        margin: 50px 0 30px 0;
    }
    
    .related-pages-subtitle {
        font-size: 0.95rem;
        margin-bottom: 25px;
    }
    
    .related-page-card {
        padding: 18px 20px;
        gap: 12px;
    }
    
    .related-page-icon {
        width: 40px;
        height: 40px;
    }
    
    .related-page-icon svg {
        width: 20px;
        height: 20px;
    }
    
    .related-page-content h3 {
        font-size: 1rem;
    }
    
    .related-page-content p {
        font-size: 0.8rem;
        line-height: 1.4;
    }
    
    .related-page-arrow {
        width: 16px;
        height: 16px;
    }
}
/* === END: 相关页面链接区域样式 === */
/* 渠道选择模态框样式 */
.channel-modal-content {
    max-width: 500px;
    padding: 2rem;
}

.channel-modal-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    text-align: center;
    margin-bottom: 1.5rem;
}

.channel-modal-section {
    margin-bottom: 2rem;
}

.channel-modal-subtitle {
    font-size: 1.1rem;
    font-weight: 600;
    color: #ff4444; /* 标红 */
    margin-bottom: 1rem;
    text-align: center; /* 居中 */
}

.channel-modal-notice {
    background: var(--bg-secondary);
    padding: 1rem;
    border-radius: 8px;
    border-left: 4px solid var(--primary-color);
}

.channel-modal-notice p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1rem;
}

.channel-notice-list {
    list-style: none;
    padding: 1rem;
    margin: 0;
    background: rgba(59, 130, 246, 0.1); /* 蓝色半透明背景 */
    border-radius: 6px;
    border: 1px solid rgba(59, 130, 246, 0.2); /* 蓝色半透明边框 */
    backdrop-filter: blur(10px); /* 毛玻璃效果 */
}

.channel-notice-list li {
    color: var(--text-secondary);
    padding: 0.5rem 0;
    font-size: 0.95rem;
    font-weight: 500;
}

.channel-notice-list li strong {
    color: var(--primary-color);
    font-weight: 600;
}

.channel-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.channel-btn {
    flex: 1;
    max-width: 200px;
    position: relative;
}

.channel-btn-content {
    position: relative;
    display: inline-block;
}

.channel-btn-text {
    display: inline-block;
}

.channel-btn-badge {
    position: absolute;
    top: -8px;
    right: -12px;
    background: #ff4444;
    color: white;
    font-size: 0.7rem;
    padding: 2px 6px;
    border-radius: 10px;
    font-weight: 500;
    line-height: 1;
}

/* 响应式调整 */
@media (max-width: 480px) {
    .channel-modal-content {
        padding: 1.5rem;
        margin: 1rem;
    }
    
    .channel-buttons {
        flex-direction: column;
    }
    
    .channel-btn {
        max-width: none;
    }
    
    .channel-modal-title {
        font-size: 1.3rem;
    }
    
    .channel-modal-subtitle {
        font-size: 1rem;
    }
}
/* 视频教程区分样式 */
.video-tutorials-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}
.video-tutorial-item {
    background: var(--bg-secondary);
    border-radius: 12px;
    padding: 1.5rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.video-tutorial-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}
.video-tutorial-header {
    margin-bottom: 1rem;
}
.video-tutorial-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}
.video-channel-badge {
    font-size: 0.8rem;
    font-weight: 500;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    color: white;
    flex-shrink: 0;
}
.video-channel-badge.normal-channel {
    background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.3);
}
.video-channel-badge.warranty-channel {
    background: linear-gradient(135deg, #10b981 0%, #047857 100%);
    box-shadow: 0 2px 8px rgba(16, 185, 129, 0.3);
}
.video-tutorial-item .video-wrapper {
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
}
/* 响应式调整 */
@media (max-width: 768px) {
    .video-tutorials-container {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .video-tutorial-item {
        padding: 1rem;
    }
    
    .video-tutorial-title {
        font-size: 1.1rem;
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    
    .video-channel-badge {
        align-self: flex-start;
    }
}
@media (max-width: 480px) {
    .video-tutorials-container {
        gap: 1rem;
    }
    
    .video-tutorial-item {
        padding: 0.75rem;
    }
    
    .video-tutorial-title {
        font-size: 1rem;
    }
    
    .video-channel-badge {
        font-size: 0.75rem;
        padding: 0.2rem 0.6rem;
    }
}