/* PPTClock 官方网站样式 - Bootstrap兼容版本 */

:root {
    --primary-color: #D24625;
    --secondary-color: #B83A1F;
    --success-color: #28a745;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --light-color: #f8f9fa;
    --dark-color: #333;
}

/* 全局样式 */
body {
    font-family: 'Microsoft YaHei', 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--dark-color);
    background-color: #f8f9fa;

}

/* 导航栏自定义 */
.navbar {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%) !important;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: bold;
}

.navbar-nav .nav-link {
    font-weight: 500;
    transition: color 0.3s ease;
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link.active {
    color: rgba(255,255,255) !important;
}



/* 英雄区域 */
.hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    padding: 4rem 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="rgba(255,255,255,0.1)" d="M0,96L48,112C96,128,192,160,288,160C384,160,480,128,576,112C672,96,768,96,864,112C960,128,1056,160,1152,160C1248,160,1344,128,1392,112L1440,96L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>') no-repeat bottom;
    background-size: cover;
}

.hero h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    position: relative;
    z-index: 1;
}

.hero p {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    opacity: 0.95;
    position: relative;
    z-index: 1;
}

/* CTA按钮 */
.cta-button {
    display: inline-block;
    background: var(--primary-color);
    color: white;
    padding: 1rem 2.5rem;
    text-decoration: none;
    border-radius: 10px;
    font-weight: bold;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(210, 70, 37, 0.3);
    position: relative;
    z-index: 1;
    border: 2px solid transparent;
}

.cta-button:hover {
    background: var(--secondary-color);
    transform: translateY(-1px);
    box-shadow: 0 8px 25px rgba(210, 70, 37, 0.4);
    color: white;
}

.cta-button.cta-outline {
    background: transparent;
    border: 2px solid white;
}

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

/* 内容区域 */
.content-section {
    padding: 4rem 0;
}

.content-section:nth-child(even) {
    background: white;
}

.content-section h2 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    text-align: center;
    color: var(--dark-color);
    font-weight: 700;
}

.content-section h3 {
    font-size: 1.8rem;
    margin: 2rem 0 1rem 0;
    color: var(--primary-color);
    font-weight: 600;
}

/* 特性卡片 */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin: 3rem 0;
}

.feature-card {
    background: white;
    padding: 2.5rem 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);    
    border-left: 5px solid var(--primary-color);
    /* position: relative; */
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 35px rgba(0,0,0,0.15);
}

.feature-card h4 {
    color: var(--primary-color);
    font-size: 1.3rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.feature-card p {
    font-size: 1rem;
    line-height: 1.7;
    color: #666;
}

/* 动画效果 */
.animate-in {
    animation: slideInUp 0.6s ease-out;
}

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

/* 教程页面样式 */
.tutorial-nav {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    margin-bottom: 2rem;
    border-left: 5px solid var(--primary-color);
}

.tutorial-nav h3 {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
}

.tutorial-nav ul {
    list-style: none;
    padding: 0;
}

.tutorial-nav li {
    margin-bottom: 0.8rem;
}

.tutorial-nav a {
    color: var(--dark-color);
    text-decoration: none;
    padding: 0.8rem 1.2rem;
    display: block;
    border-radius: 8px;
    transition: all 0.3s ease;
    border-left: 3px solid transparent;
}

.tutorial-nav a:hover {
    background: var(--primary-color);
    color: white;
    transform: translateX(5px);
}

.tutorial-content {
    background: white;
    padding: 2.5rem;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
}

.tutorial-section {
    margin-bottom: 3rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid #eee;
}

.tutorial-section:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.tutorial-step {
    margin: 2rem 0;
    padding: 2rem;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-radius: 12px;
    border-left: 5px solid var(--primary-color);
    position: relative;
}

.tutorial-step h3 {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    font-size: 1.4rem;
}

.tutorial-step h4 {
    color: var(--dark-color);
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

/* 价格卡片 */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin: 3rem 0;
}

.pricing-card {
    background: white;
    padding: 2.5rem 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    text-align: center;
    position: relative;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.pricing-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 35px rgba(0,0,0,0.15);
}

.pricing-card.featured {
    border-color: var(--primary-color);
    transform: scale(1.05);
}

.pricing-card.featured::before {
    content: "推荐";
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary-color);
    color: white;
    padding: 0.5rem 1.5rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: bold;
    box-shadow: 0 4px 10px rgba(210, 70, 37, 0.3);
}

.price {
    font-size: 3rem;
    color: var(--primary-color);
    font-weight: bold;
    margin: 1.5rem 0;
}

.currency {
    font-size: 1.5rem;
    vertical-align: super;
}

.price-note {
    color: #666;
    font-size: 0.9rem;
    margin-bottom: 2rem;
}

.card-features ul {
    list-style: none;
    padding: 0;
    margin: 2rem 0;
    text-align: left;
}

.card-features li {
    margin-bottom: 1rem;
    padding-left: 1.8rem;
    position: relative;
    font-size: 1rem;
}

.card-features li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--success-color);
    font-weight: bold;
    font-size: 1.1rem;
}

.card-features li.disabled {
    color: #999;
    text-decoration: line-through;
}

.card-features li.disabled::before {
    content: "✗";
    color: var(--danger-color);
}

/* 联系表单 */
.contact-form {
    background: white;
    padding: 2.5rem;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    max-width: 600px;
    margin: 2rem auto;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--dark-color);
}

.form-control,
.form-select {
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    padding: 0.8rem 1rem;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-control:focus,
.form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(210, 70, 37, 0.25);
}

.btn-primary {
    background: var(--primary-color);
    border: none;   
    font-weight: 600;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
}

/* 表格样式 */
.shortcut-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    margin: 1.5rem 0;
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 2px 15px rgba(0,0,0,0.1);
}

.shortcut-table th,
.shortcut-table td {
    padding: 1rem 1.5rem;
    text-align: left;
    border-bottom: 1px solid #eee;
}

.shortcut-table th {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.9rem;
    letter-spacing: 0.5px;
}

.shortcut-table tr:hover {
    background: var(--light-color);
}

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

/* 代码块 */
.code-block {
    background: #f8f9fa;
    border: 1px solid #e9ecef;
    border-radius: 8px;
    padding: 1.5rem;
    margin: 1.5rem 0;
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 0.9rem;
    overflow-x: auto;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

/* 警告框 */
.alert {
    padding: 1rem 1.5rem;
    border-radius: 8px;
    margin: 1.5rem 0;
    border-left: 5px solid;
}

.alert-info {
    background: #d1ecf1;
    border-color: #0c5460;
    color: #0c5460;
}

.alert-warning {
    background: #fff3cd;
    border-color: #856404;
    color: #856404;
}

.alert-success {
    background: #d4edda;
    border-color: #155724;
    color: #155724;
}

.alert-danger {
    background: #f8d7da;
    border-color: #721c24;
    color: #721c24;
}

/* FAQ样式 */
.faq-item {
    margin: 2rem 0;
    padding: 2rem;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-radius: 12px;
    border-left: 5px solid var(--success-color);
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.faq-item h3 {
    color: var(--success-color);
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.faq-item p {
    margin: 0;
    line-height: 1.7;
    font-size: 1rem;
}

/* 占位图片 */
.placeholder-image {
    background: linear-gradient(135deg, #e9ecef 0%, #dee2e6 100%);
    padding: 4rem 2rem;
    border-radius: 8px;
    color: #666;
    font-style: italic;
    border: 2px dashed #ccc;
    text-align: center;
    margin: 1.5rem 0;
}

/* 步骤图片 */
.step-image {
    margin: 1.5rem 0;
    text-align: center;
}

/* 社交链接 */
.social-links {
    display: flex;
    gap: 1.5rem;
    margin-top: 1rem;
}

.social-links a {
    color: white;
    transition: all 0.3s ease;
    font-size: 1.2rem;
}

.social-links a:hover {
    color: var(--primary-color);
    transform: translateY(-1px);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.2rem;
    }
    
    .hero p {
        font-size: 1.1rem;
    }
    
    .content-section h2 {
        font-size: 2rem;
    }
    
    .features-grid,
    .pricing-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .pricing-card.featured {
        transform: none;
    }
    
    .tutorial-nav {
        margin-bottom: 2rem;
    }
    
    .tutorial-content {
        padding: 1.5rem;
    }
    
    .tutorial-step {
        padding: 1.5rem;
    }
    
    .contact-form {
        padding: 1.5rem;
    }
    
    .shortcut-table {
        font-size: 0.9rem;
    }
    
    .shortcut-table th,
    .shortcut-table td {
        padding: 0.8rem 1rem;
    }
    
    .feature-card {
        padding: 1.5rem;
    }
    
    .pricing-card {
        padding: 1.5rem;
    }
    
    .social-links {
        justify-content: center;
    }
}

@media (max-width: 576px) {
    .hero {
        padding: 2rem 0;
    }
    
    .content-section {
        padding: 2rem 0;
    }
    
    .hero h1 {
        font-size: 1.8rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .content-section h2 {
        font-size: 1.6rem;
    }
    
    .content-section h3 {
        font-size: 1.4rem;
    }
    
    .tutorial-step {
        padding: 1rem;
    }
    
    .contact-form {
        padding: 1rem;
    }
}

/* 额外的动画效果 */
.fade-in {
    opacity: 0;
    animation: fadeIn 0.8s ease-out forwards;
}

@keyframes fadeIn {
    to {
        opacity: 1;
    }
}

.slide-in-left {
    transform: translateX(-50px);
    opacity: 0;
    animation: slideInLeft 0.6s ease-out forwards;
}

@keyframes slideInLeft {
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.slide-in-right {
    transform: translateX(50px);
    opacity: 0;
    animation: slideInRight 0.6s ease-out forwards;
}

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