/* ==================== 基础样式 ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Microsoft YaHei', sans-serif;
    background: linear-gradient(135deg, #0f1b31 0%, #1e3a8a 50%, #4c1d95 100%);
    color: #e2e8f0;
    min-height: 100vh;
    overflow-x: hidden;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ==================== 头部导航 ==================== */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 15px 0;
    border-bottom: 1px solid rgba(94, 234, 212, 0.2);
    transition: transform 0.3s ease;
}

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

.logo {
    font-size: 24px;
    font-weight: bold;
    color: #5eead4;
    display: flex;
    align-items: center;
    gap: 10px;
}

.nav-links {
    display: flex;
    gap: 30px;
    align-items: center;
}

.nav-links a {
    color: #cbd5e1;
    text-decoration: none;
    transition: color 0.3s;
    font-weight: 500;
}

.nav-links a:hover {
    color: #5eead4;
}

.btn-primary {
    background: linear-gradient(135deg, #0ea5e9 0%, #0d9488 100%);
    color: white;
    padding: 12px 28px;
    border: none;
    border-radius: 25px;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 600;
    box-shadow: 0 4px 15px rgba(14, 165, 233, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(14, 165, 233, 0.6);
}

/* ==================== 英雄区域 ==================== */
.hero {
    margin-top: 80px;
    padding: 120px 0;
    text-align: center;
    position: relative;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at top right, rgba(94, 234, 212, 0.1) 0%, transparent 40%);
    pointer-events: none;
}

.hero h1 {
    font-size: 56px;
    margin-bottom: 20px;
    background: linear-gradient(to right, #5eead4, #0ea5e9);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-weight: 800;
    letter-spacing: -1px;
}

.hero-subtitle {
    font-size: 22px;
    color: #94a3b8;
    max-width: 700px;
    margin: 0 auto 40px;
    line-height: 1.6;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 60px;
    margin-top: 60px;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 42px;
    font-weight: bold;
    color: #5eead4;
    display: block;
    animation: countUp 2s ease-out;
}

.stat-label {
    font-size: 16px;
    color: #94a3b8;
    margin-top: 5px;
}

/* ==================== 痛点区域 ==================== */
.pain-points {
    padding: 100px 0;
    background: rgba(220, 38, 38, 0.05);
    position: relative;
    overflow: hidden;
}

.pain-points::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(to right, #ef4444, #f97316);
}

.pain-points-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.pain-card {
    background: rgba(30, 41, 59, 0.7);
    border: 1px solid rgba(239, 68, 68, 0.2);
    border-radius: 20px;
    padding: 40px;
    position: relative;
    transition: all 0.4s ease;
}

.pain-card:hover {
    transform: translateY(-5px);
    border-color: rgba(239, 68, 68, 0.4);
    box-shadow: 0 15px 30px rgba(239, 68, 68, 0.15);
}

.pain-icon {
    width: 90px;
    height: 90px;
    background: rgba(239, 68, 68, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 25px;
    font-size: 40px;
    color: #ef4444;
    border: 2px solid rgba(239, 68, 68, 0.3);
}

.pain-title {
    font-size: 24px;
    margin-bottom: 15px;
    color: #f87171;
    font-weight: 600;
}

.pain-desc {
    color: #cbd5e1;
    line-height: 1.7;
    font-size: 16px;
}

/* ==================== 解决方案 ==================== */
.solution-intro {
    text-align: center;
    margin: 40px 0;
    font-size: 20px;
    color: #5eead4;
    font-weight: 500;
    position: relative;
    padding: 20px;
    background: rgba(94, 234, 212, 0.05);
    border-radius: 15px;
    border: 1px dashed rgba(94, 234, 212, 0.3);
}

.solution-intro::before {
    content: '→';
    position: absolute;
    left: 30px;
    font-size: 30px;
}

/* ==================== 功能特性 ==================== */
.features {
    padding: 50px 0;
    background: rgba(15, 23, 42, 0.5);
    backdrop-filter: blur(10px);
}

.section-title {
    text-align: center;
    font-size: 40px;
    margin-bottom: 40px;
    color: #e2e8f0;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: linear-gradient(to right, #0ea5e9, #5eead4);
    margin: 20px auto;
    border-radius: 2px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.feature-card {
    background: rgba(30, 41, 59, 0.6);
    border: 1px solid rgba(94, 234, 212, 0.1);
    border-radius: 20px;
    padding: 40px;
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(94, 234, 212, 0.1) 0%, transparent 60%);
    transition: all 0.5s ease;
    opacity: 0;
}

.feature-card:hover::before {
    opacity: 1;
}

.feature-card:hover {
    transform: translateY(-10px);
    border-color: rgba(94, 234, 212, 0.3);
    box-shadow: 0 20px 40px rgba(14, 165, 233, 0.2);
}

.feature-icon {
    font-size: 48px;
    color: #0ea5e9;
    margin-bottom: 20px;
    display: inline-block;
    background: rgba(14, 165, 233, 0.1);
    width: 80px;
    height: 80px;
    line-height: 80px;
    text-align: center;
    border-radius: 20px;
}

.feature-title {
    font-size: 24px;
    margin-bottom: 15px;
    color: #e2e8f0;
}

.feature-desc {
    color: #94a3b8;
    line-height: 1.7;
    font-size: 16px;
}

.feature-tags {
    display: flex;
    gap: 10px;
    margin-top: 20px;
    flex-wrap: wrap;
}

.tag {
    background: rgba(94, 234, 212, 0.1);
    color: #5eead4;
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 500;
}

/* ==================== 视频演示 ==================== */
.demo-section {
    padding: 50px 0;
    text-align: center;
}

.video-container {
    width: 100%;
    max-width: 900px;
    aspect-ratio: 1920 / 1080;
    margin: 0 auto;
    position: relative;
    overflow: hidden;
    border-radius: 20px;
    box-shadow: 0 25px 50px rgba(14, 165, 233, 0.3);
    border: 1px solid rgba(94, 234, 212, 0.2);
}

.video-container video {
    width: 100%;
    height: 100%;
    object-fit: contain;
    border-radius: 20px;
    background: #000;
}

/* ==================== 价格方案 ==================== */
.pricing-section {
    padding: 50px 0;
    background: rgba(15, 23, 42, 0.7);
    backdrop-filter: blur(10px);
    position: relative;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 50px;
    max-width: 1000px;
    margin-left: auto;
    margin-right: auto;
}

.pricing-card {
    background: rgba(30, 41, 59, 0.6);
    border: 1px solid rgba(94, 234, 212, 0.1);
    border-radius: 20px;
    padding: 40px;
    text-align: center;
    position: relative;
    transition: all 0.4s ease;
}

.pricing-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(14, 165, 233, 0.2);
}

.pricing-card.featured {
    border-color: rgba(94, 234, 212, 0.4);
    transform: scale(1.05);
    background: rgba(30, 41, 59, 0.8);
}

.pricing-card.featured::before {
    content: '推荐';
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, #0ea5e9, #5eead4);
    color: #0f172a;
    padding: 8px 24px;
    border-radius: 20px;
    font-weight: 700;
    font-size: 14px;
    box-shadow: 0 4px 15px rgba(94, 234, 212, 0.4);
}

.pricing-title {
    font-size: 26px;
    margin-bottom: 15px;
    color: #e2e8f0;
    font-weight: 600;
}

.pricing-price {
    font-size: 48px;
    font-weight: 800;
    color: #5eead4;
    margin: 20px 0;
    position: relative;
    display: inline-block;
}

.pricing-price::before {
    content: '¥';
    font-size: 24px;
    position: absolute;
    left: -20px;
    top: 5px;
    color: #94a3b8;
}

.pricing-price .period {
    font-size: 16px;
    color: #94a3b8;
    font-weight: 400;
    margin-left: 5px;
}

.pricing-features {
    list-style: none;
    margin: 30px 0;
    text-align: left;
}

.pricing-features li {
    padding: 12px 0;
    color: #cbd5e1;
    font-size: 16px;
    position: relative;
    padding-left: 30px;
    border-bottom: 1px solid rgba(148, 163, 184, 0.1);
}

.pricing-features li:last-child {
    border-bottom: none;
}

.pricing-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #0ea5e9;
    font-weight: bold;
    font-size: 18px;
}

.pricing-card.featured .pricing-features li::before {
    color: #5eead4;
}

.pricing-btn {
    width: 100%;
    padding: 14px;
    border: none;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.pricing-btn.primary {
    background: linear-gradient(135deg, #0ea5e9, #0d9488);
    color: white;
    box-shadow: 0 4px 15px rgba(14, 165, 233, 0.4);
}

.pricing-btn.primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(14, 165, 233, 0.6);
}

.pricing-btn.outline {
    background: transparent;
    color: #5eead4;
    border: 2px solid #5eead4;
}

.pricing-btn.outline:hover {
    background: #5eead4;
    color: #0f172a;
}

/* ==================== 用户评价 ==================== */
.testimonials {
    padding: 50px 0;
    background: rgba(15, 23, 42, 0.7);
    backdrop-filter: blur(10px);
}

.testimonials-slider {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
}

.testimonial-card {
    background: rgba(30, 41, 59, 0.8);
    border: 1px solid rgba(94, 234, 212, 0.1);
    border-radius: 20px;
    padding: 40px;
    margin: 0 20px;
    display: none;
    animation: fadeIn 0.5s ease;
}

.testimonial-card.active {
    display: block;
}

.testimonial-content {
    font-size: 22px;
    font-style: italic;
    color: #e2e8f0;
    line-height: 1.7;
    margin-bottom: 30px;
    position: relative;
    padding: 0 20px;
}

.testimonial-content::before,
.testimonial-content::after {
    content: '"';
    position: absolute;
    font-size: 60px;
    color: #0ea5e9;
    opacity: 0.3;
    font-family: Georgia, serif;
}

.testimonial-content::before {
    top: -25px;
    left: -10px;
}

.testimonial-content::after {
    bottom: -40px;
    right: -10px;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 15px;
}

.author-avatar {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, #0ea5e9, #5eead4);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: bold;
    color: white;
}

.author-info h4 {
    color: #e2e8f0;
    margin-bottom: 5px;
}

.author-info p {
    color: #94a3b8;
    font-size: 14px;
    margin: 0;
}

.author-company {
    font-size: 12px;
    opacity: 0.8;
}

.testimonial-rating {
    margin-left: auto;
    color: #fbbf24;
    font-size: 18px;
}

.slider-controls {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-top: 40px;
}

.slider-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(148, 163, 184, 0.3);
    cursor: pointer;
    transition: all 0.3s;
}

.slider-dot.active {
    background: #0ea5e9;
    transform: scale(1.3);
}

/* ==================== 应用场景 ==================== */
.scenarios {
    padding: 50px 0;
}

.scenarios-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.scenario-card {
    background: rgba(30, 41, 59, 0.6);
    border: 1px solid rgba(94, 234, 212, 0.1);
    border-radius: 20px;
    overflow: hidden;
    transition: all 0.4s ease;
    position: relative;
}

.scenario-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(to right, #0ea5e9, #5eead4);
}

.scenario-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(14, 165, 233, 0.25);
    border-color: rgba(94, 234, 212, 0.3);
}

.scenario-header {
    padding: 30px;
    background: rgba(15, 23, 42, 0.8);
}

.scenario-title {
    font-size: 22px;
    margin-bottom: 10px;
    color: #e2e8f0;
}

.scenario-desc {
    color: #94a3b8;
    font-size: 16px;
    line-height: 1.6;
}

.scenario-content {
    padding: 30px;
}

.scenario-list {
    list-style: none;
}

.scenario-list li {
    padding: 12px 0;
    color: #cbd5e1;
    font-size: 15px;
    position: relative;
    padding-left: 30px;
    border-bottom: 1px solid rgba(148, 163, 184, 0.1);
}

.scenario-list li:last-child {
    border-bottom: none;
}

.scenario-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #0ea5e9;
    font-weight: bold;
    font-size: 18px;
}

/* ==================== CTA 行动号召 ==================== */
.cta-section {
    padding: 120px 0;
    text-align: center;
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.1) 0%, rgba(94, 234, 212, 0.1) 100%);
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: -100px;
    right: -100px;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(94, 234, 212, 0.1) 0%, transparent 70%);
    animation: float 6s ease-in-out infinite;
}

.cta-section::after {
    content: '';
    position: absolute;
    bottom: -150px;
    left: -150px;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(14, 165, 233, 0.1) 0%, transparent 70%);
    animation: float 8s ease-in-out infinite reverse;
}

.cta-title {
    font-size: 48px;
    margin-bottom: 20px;
    color: #e2e8f0;
    position: relative;
    z-index: 1;
}

.cta-subtitle {
    font-size: 20px;
    color: #94a3b8;
    margin-bottom: 50px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    position: relative;
    z-index: 1;
}

.cta-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
    position: relative;
    z-index: 1;
}

.btn-outline {
    background: transparent;
    color: #5eead4;
    border: 2px solid #5eead4;
    padding: 12px 28px;
    border-radius: 25px;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 600;
}

.btn-outline:hover {
    background: #5eead4;
    color: #0f172a;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(94, 234, 212, 0.4);
}

/* ==================== 页脚 ==================== */
.footer {
    background: rgba(15, 23, 42, 0.9);
    padding: 60px 0 30px;
    border-top: 1px solid rgba(94, 234, 212, 0.1);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h3 {
    color: #5eead4;
    margin-bottom: 20px;
    font-size: 20px;
}

.footer-section p,
.footer-section a {
    color: #94a3b8;
    text-decoration: none;
    line-height: 1.8;
    transition: color 0.3s;
}

.footer-section a:hover {
    color: #5eead4;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 12px;
}

.social-links {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

.social-link {
    width: 40px;
    height: 40px;
    background: rgba(94, 234, 212, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #5eead4;
    transition: all 0.3s;
}

.social-link:hover {
    background: #5eead4;
    color: #0f172a;
    transform: translateY(-3px);
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(148, 163, 184, 0.1);
    color: #64748b;
    font-size: 14px;
}

/* ==================== 动画效果 ==================== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes float {
    0% {
        transform: translate(0, 0) rotate(0deg);
    }
    50% {
        transform: translate(-20px, -20px) rotate(180deg);
    }
    100% {
        transform: translate(0, 0) rotate(360deg);
    }
}

.fade-in {
    animation: fadeIn 0.8s ease-out;
}

/* ==================== 响应式设计 ==================== */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 36px;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 30px;
    }
    
    .features-grid,
    .scenarios-grid,
    .pricing-grid {
        grid-template-columns: 1fr;
    }
    
    .nav-links {
        display: none;
    }
    
    .cta-title {
        font-size: 32px;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .pricing-card.featured {
        transform: scale(1);
    }
    
    .customer-service-panel {
        width: 280px;
        right: 20px;
    }
}

/* ==================== 亮点标签 ==================== */
.highlight-badge {
    display: inline-block;
    background: linear-gradient(135deg, #0ea5e9, #5eead4);
    color: #0f172a;
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 700;
    margin-bottom: 15px;
    text-transform: uppercase;
    letter-spacing: 1px;
}
/* ==================== 对比表格 ==================== */
.comparison-table {
    background: rgba(30, 41, 59, 0.6);
    border: 1px solid rgba(94, 234, 212, 0.1);
    border-radius: 20px;
    overflow: hidden;
    margin-top: 50px;
    overflow-x: auto;
}

.comparison-table table {
    width: 100%;
    border-collapse: collapse;
}

.comparison-table th,
.comparison-table td {
    padding: 20px;
    text-align: center;  /* 关键修改：让所有单元格内容居中 */
    border-bottom: 1px solid rgba(148, 163, 184, 0.1);
}

.comparison-table th {
    background: rgba(15, 23, 42, 0.8);
    color: #5eead4;
    font-weight: 600;
}

.comparison-table tr:last-child td {
    border-bottom: none;
}

.comparison-table td:first-child {
    font-weight: 500;
    color: #e2e8f0;
    /* 删除了可能存在的 text-align: left; */
}

.comparison-table .fa-check {
    color: #0ea5e9;
    font-size: 20px;
}

.comparison-table .fa-times {
    color: #ef4444;
    font-size: 20px;
}

/* ==================== 客服功能样式 ==================== */
.customer-service-btn {
    position: fixed;
    top: 50%;
    right: 30px;
    transform: translateY(-50%);
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #0ea5e9 0%, #5eead4 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(14, 165, 233, 0.4);
    z-index: 9999;
    transition: all 0.3s ease;
    border: none;
    color: white;
    font-size: 24px;
}

.customer-service-btn:hover {
    transform: translateY(-50%) scale(1.1);
    box-shadow: 0 6px 20px rgba(14, 165, 233, 0.6);
}

.customer-service-panel {
    position: fixed;
    top: 50%;
    right: 90px;
    transform: translateY(-50%);
    width: 320px;
    background: rgba(30, 41, 59, 0.9);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(94, 234, 212, 0.2);
    border-radius: 20px;
    padding: 25px;
    z-index: 9998;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.customer-service-panel.active {
    opacity: 1;
    visibility: visible;
}

.service-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid rgba(94, 234, 212, 0.1);
}

.service-header h3 {
    color: #5eead4;
    font-size: 20px;
    margin: 0;
}

.close-btn {
    background: none;
    border: none;
    color: #94a3b8;
    font-size: 20px;
    cursor: pointer;
    transition: color 0.3s;
    padding: 5px;
}

.close-btn:hover {
    color: #5eead4;
}

.service-content {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.service-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    background: rgba(15, 23, 42, 0.5);
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 1px solid rgba(94, 234, 212, 0.1);
}

.service-item:hover {
    background: rgba(94, 234, 212, 0.1);
    border-color: rgba(94, 234, 212, 0.3);
    transform: translateX(5px);
}

.service-item i {
    font-size: 24px;
    width: 30px;
    text-align: center;
}

.service-item .fa-envelope {
    color: #0ea5e9;
}

.service-item .fa-qq {
    color: #0ea5e9;
}

.service-item .fa-weixin {
    color: #5eead4;
}

.service-item span {
    color: #e2e8f0;
    font-size: 15px;
    flex: 1;
}

.service-item small {
    color: #94a3b8;
    font-size: 12px;
}

/* ==================== 微信二维码模态框 ==================== */
.modal {
    display: none;
    position: fixed;
    z-index: 10001;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(5px);
    animation: fadeIn 0.3s ease;
}

.modal-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(30, 41, 59, 0.95);
    border: 1px solid rgba(94, 234, 212, 0.3);
    border-radius: 20px;
    padding: 30px;
    max-width: 90%;
    max-height: 90%;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.5);
    animation: scaleIn 0.3s ease;
}

.modal-close {
    position: absolute;
    top: 5px;
    right: 20px;
    background: none;
    border: none;
    color: #94a3b8;
    font-size: 28px;
    cursor: pointer;
    transition: color 0.3s;
    z-index: 1;
}

.modal-close:hover {
    color: #5eead4;
}

.qr-code {
    width: 100%;
    max-width: 300px;
    height: auto;
    border-radius: 10px;
    display: block;
    margin: 0 auto;
}

@keyframes scaleIn {
    from {
        transform: translate(-50%, -50%) scale(0.8);
        opacity: 0;
    }
    to {
        transform: translate(-50%, -50%) scale(1);
        opacity: 1;
    }
}

/* ==================== 回到顶部按钮样式 ==================== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 40px;
    width: 50px;
    height: 50px;
    background: rgba(30, 41, 59, 0.8);
    border: 2px solid #5eead4;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 9997;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    color: #5eead4;
    font-size: 20px;
}

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

.back-to-top:hover {
    background: #5eead4;
    color: #0f172a;
    transform: translateY(-3px) scale(1.05);
}

/* ==================== 提示消息样式 ==================== */
.toast {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(30, 41, 59, 0.9);
    backdrop-filter: blur(10px);
    color: #5eead4;
    padding: 15px 30px;
    border-radius: 12px;
    border: 1px solid rgba(94, 234, 212, 0.2);
    z-index: 10000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.toast.show {
    opacity: 1;
    visibility: visible;
}