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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    background: white;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    overflow: hidden;
}

.progress-bar {
    height: 6px;
    background: #f0f0f0;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #667eea 0%, #764ba2 100%);
    transition: width 0.5s ease;
    width: 0%;
}

.content {
    padding: 60px 40px;
}

.step {
    display: none;
    animation: fadeIn 0.5s ease;
}

.step.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.step-icon {
    font-size: 80px;
    text-align: center;
    margin-bottom: 20px;
}

h1 {
    font-size: 32px;
    font-weight: 700;
    color: #1a1a2e;
    text-align: center;
    margin-bottom: 15px;
}

.subtitle {
    font-size: 16px;
    color: #6b7280;
    text-align: center;
    margin-bottom: 40px;
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin: 40px 0;
}

.card {
    background: linear-gradient(135deg, #f6f8ff 0%, #fff 100%);
    border: 2px solid #e5e7eb;
    border-radius: 16px;
    padding: 30px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
}

.card:hover {
    border-color: #667eea;
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.2);
}

.card-icon {
    font-size: 48px;
    margin-bottom: 15px;
}

.card h3 {
    font-size: 18px;
    font-weight: 600;
    color: #1a1a2e;
    margin-bottom: 8px;
}

.card p {
    font-size: 14px;
    color: #6b7280;
}

.card-link-hint {
    font-size: 12px;
    color: #667eea;
    margin-top: 10px;
    font-weight: 600;
    opacity: 0;
    transform: translateY(-5px);
    transition: all 0.3s ease;
}

.card:hover .card-link-hint {
    opacity: 1;
    transform: translateY(0);
}

a.card {
    text-decoration: none;
    display: block;
}

.instructions {
    margin: 40px 0;
}

.instruction-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    padding: 25px;
    background: #f8fafc;
    border-radius: 12px;
    margin-bottom: 15px;
}

.step-number {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 18px;
}

.instruction-item p,
.instruction-item div {
    flex: 1;
    margin: 0;
    line-height: 1.8;
    color: #374151;
}

.instruction-item strong {
    color: #1a1a2e;
    display: block;
    margin-bottom: 5px;
}

.tip-box {
    background: #fef3c7;
    border-left: 4px solid #f59e0b;
    padding: 20px;
    border-radius: 8px;
    margin: 30px 0;
    color: #92400e;
}

.success-box {
    background: #d1fae5;
    border: 2px solid #10b981;
    padding: 30px;
    border-radius: 12px;
    text-align: center;
    margin: 30px 0;
}

.success-box p {
    color: #065f46;
    font-size: 16px;
    line-height: 1.8;
}

.faq-list {
    margin: 40px 0;
}

.faq-item {
    background: #f8fafc;
    border-radius: 12px;
    padding: 25px;
    margin-bottom: 15px;
}

.faq-item h3 {
    font-size: 18px;
    font-weight: 600;
    color: #1a1a2e;
    margin-bottom: 10px;
}

.faq-item p {
    color: #6b7280;
    margin: 0;
}

.button-group {
    display: flex;
    gap: 15px;
    justify-content: center;
    margin-top: 50px;
    flex-wrap: wrap;
}

.btn {
    padding: 14px 32px;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: all 0.3s ease;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(102, 126, 234, 0.4);
}

.btn-secondary {
    background: #f3f4f6;
    color: #374151;
}

.btn-secondary:hover {
    background: #e5e7eb;
}

.footer {
    background: #f8fafc;
    padding: 15px 25px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid #e5e7eb;
}

.footer p {
    color: #6b7280;
    font-size: 14px;
}

/* 购买按钮样式 */
.buy-now-section {
    text-align: center;
    margin: 30px 0;
}

.buy-now-btn {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    background: linear-gradient(135deg, #ff6b6b 0%, #ee5a24 100%);
    color: white;
    padding: 20px 40px;
    border-radius: 50px;
    font-size: 20px;
    font-weight: 700;
    text-decoration: none;
    box-shadow: 0 10px 30px rgba(238, 90, 36, 0.4);
    transition: all 0.3s ease;
    animation: pulse 2s infinite;
}

.buy-now-btn:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 15px 40px rgba(238, 90, 36, 0.5);
}

.buy-icon {
    font-size: 28px;
    animation: bounce 1s infinite;
}

.buy-text {
    flex: 1;
}

.buy-arrow {
    font-size: 24px;
    transition: transform 0.3s ease;
}

.buy-now-btn:hover .buy-arrow {
    transform: translateX(5px);
}

.buy-hint {
    color: #6b7280;
    font-size: 14px;
    margin-top: 15px;
    font-style: italic;
}

@keyframes pulse {
    0%, 100% {
        box-shadow: 0 10px 30px rgba(238, 90, 36, 0.4);
    }
    50% {
        box-shadow: 0 10px 40px rgba(238, 90, 36, 0.6);
    }
}

@keyframes bounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-5px);
    }
}

/* 案例中心样式 */
.case-list {
    margin: 40px 0;
}

.case-item {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 25px;
    background: linear-gradient(135deg, #f6f8ff 0%, #fff 100%);
    border: 2px solid #e5e7eb;
    border-radius: 16px;
    margin-bottom: 15px;
    text-decoration: none;
    transition: all 0.3s ease;
}

.case-item:hover {
    border-color: #667eea;
    transform: translateX(5px);
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.15);
}

.case-icon {
    flex-shrink: 0;
    font-size: 40px;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 12px;
}

.case-content {
    flex: 1;
}

.case-content h3 {
    font-size: 18px;
    font-weight: 600;
    color: #1a1a2e;
    margin-bottom: 8px;
    line-height: 1.4;
}

.case-content p {
    font-size: 14px;
    color: #6b7280;
    margin: 0;
}

.case-arrow {
    flex-shrink: 0;
    font-size: 24px;
    color: #667eea;
    transition: transform 0.3s ease;
}

.case-item:hover .case-arrow {
    transform: translateX(5px);
}

@media (max-width: 768px) {
    .content {
        padding: 40px 20px;
    }

    h1 {
        font-size: 24px;
    }

    .step-icon {
        font-size: 60px;
    }

    .card-grid {
        grid-template-columns: 1fr;
    }

    .button-group {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

    .buy-now-btn {
        padding: 16px 30px;
        font-size: 16px;
        flex-direction: column;
        gap: 8px;
    }

    .buy-icon {
        font-size: 24px;
    }
}

.beian {
    font-size: 14px;
    color: #666;
}

.beian a {
    color: #666;
    text-decoration: none;
}

.beian a:hover {
    text-decoration: underline;
}