/* 主题颜色变量 */
:root {
    --primary-color: #FF6B00;
    --secondary-color: #2C3E50;
    --accent-color: #3498DB;
    --light-bg: #F8F9FA;
    --dark-bg: #343A40;
    --success-color: #28a745;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --text-color: #333;
    --text-light: #6c757d;
    --border-radius: 10px;
    --box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    --transition: all 0.3s ease;
}

/* 全局样式 */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--light-bg);
    overflow-x: hidden;
}

/* 滚动条美化 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--light-bg);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: #e05e00;
}

/* 文本选择样式 */
::selection {
    background-color: var(--primary-color);
    color: white;
}

/* 导航栏样式增强 */
.navbar {
    background-color: var(--dark-bg);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    padding: 15px 0;
    transition: var(--transition);
}

.navbar-brand {
    font-weight: 700;
    color: var(--primary-color) !important;
    font-size: 1.5rem;
    letter-spacing: 0.5px;
}

.navbar-nav .nav-link {
    color: rgba(255, 255, 255, 0.8) !important;
    font-weight: 500;
    padding: 0.5rem 1rem;
    transition: var(--transition);
    position: relative;
}

.navbar-nav .nav-link:hover {
    color: var(--primary-color) !important;
}

.navbar-nav .nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 0;
    left: 50%;
    background-color: var(--primary-color);
    transition: var(--transition);
    transform: translateX(-50%);
}

.navbar-nav .nav-link:hover::after {
    width: 70%;
}

/* 英雄区域增强 */
.hero-section {
    background: linear-gradient(135deg, var(--secondary-color) 0%, var(--dark-bg) 100%);
    color: white;
    padding: 100px 0;
    margin-bottom: 60px;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('data:image/svg+xml;base64,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');
    opacity: 0.1;
}

.hero-title {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 25px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    letter-spacing: 1px;
}

.hero-subtitle {
    font-size: 1.3rem;
    margin-bottom: 40px;
    opacity: 0.9;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* 按钮样式增强 */
.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    padding: 12px 30px;
    font-weight: 600;
    border-radius: 50px;
    transition: var(--transition);
    box-shadow: 0 4px 15px rgba(255, 107, 0, 0.3);
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: var(--transition);
    z-index: -1;
}

.btn-primary:hover {
    background-color: #e05e00;
    border-color: #e05e00;
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(255, 107, 0, 0.4);
}

.btn-primary:hover::before {
    left: 100%;
}

/* 卡片样式增强 */
.card {
    border: none;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    margin-bottom: 30px;
    overflow: hidden;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.card-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, #ff8c00 100%);
    color: white;
    font-weight: 600;
    border-radius: var(--border-radius) var(--border-radius) 0 0 !important;
    padding: 20px;
    border: none;
}

.card-body {
    padding: 30px;
}

/* 价格标签增强 */
.price-tag {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--primary-color);
    margin-bottom: 20px;
    display: inline-block;
    position: relative;
}

.price-tag::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 50px;
    height: 3px;
    background-color: var(--primary-color);
    border-radius: 3px;
}

/* 特性列表增强 */
.feature-list {
    list-style: none;
    padding-left: 0;
    margin-bottom: 25px;
}

.feature-list li {
    margin-bottom: 15px;
    position: relative;
    padding-left: 30px;
    font-size: 1.05rem;
}

.feature-list li:before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
    background-color: rgba(255, 107, 0, 0.1);
    width: 22px;
    height: 22px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
}

/* 二维码容器增强 */
.qr-code-container {
    text-align: center;
    margin: 30px 0;
    position: relative;
}

.qr-code-img {
    max-width: 200px;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    padding: 10px;
    background-color: white;
    transition: var(--transition);
}

.qr-code-img:hover {
    transform: scale(1.05);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

/* 地址容器增强 */
.address-container {
    background-color: #f8f9fa;
    border-radius: var(--border-radius);
    padding: 20px;
    margin: 25px 0;
    position: relative;
    border-left: 4px solid var(--primary-color);
}

.copy-btn {
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    background-color: var(--accent-color);
    color: white;
    border: none;
    border-radius: 5px;
    padding: 8px 15px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: var(--transition);
}

.copy-btn:hover {
    background-color: #2980b9;
    transform: translateY(-50%) scale(1.05);
}

/* 常见问题部分增强 */
.faq-section {
    background-color: white;
    padding: 80px 0;
    margin-top: 60px;
    position: relative;
    overflow: hidden;
}

.faq-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('data:image/svg+xml;base64,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');
    opacity: 0.5;
}

.faq-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 50px;
    text-align: center;
    color: var(--secondary-color);
    position: relative;
    padding-bottom: 15px;
}

.faq-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background-color: var(--primary-color);
    border-radius: 3px;
}

/* 手风琴样式增强 */
.accordion-item {
    border: none;
    margin-bottom: 15px;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

.accordion-item:hover {
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.accordion-button {
    font-weight: 600;
    padding: 20px;
    background-color: white;
    color: var(--secondary-color);
    transition: var(--transition);
}

.accordion-button:not(.collapsed) {
    background-color: var(--light-bg);
    color: var(--primary-color);
}

.accordion-button:focus {
    box-shadow: none;
    border-color: rgba(255, 107, 0, 0.25);
}

.accordion-button::after {
    background-color: var(--primary-color);
    border-radius: 50%;
    background-position: center;
    background-size: 12px;
    width: 24px;
    height: 24px;
}

.accordion-body {
    padding: 20px 25px;
    background-color: white;
    line-height: 1.8;
}

/* 联系我们部分增强 */
.contact-section {
    padding: 80px 0;
    background-color: var(--light-bg);
}

.contact-section .card {
    border-top: 4px solid var(--primary-color);
}

.contact-section i {
    color: var(--primary-color);
    font-size: 1.2rem;
    margin-right: 10px;
}

/* 页脚增强 */
footer {
    background-color: var(--dark-bg);
    color: white;
    padding: 60px 0 30px;
    margin-top: 60px;
    position: relative;
    overflow: hidden;
}

footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('data:image/svg+xml;base64,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');
    opacity: 0.1;
}

.footer-title {
    font-weight: 700;
    margin-bottom: 25px;
    color: var(--primary-color);
    position: relative;
    padding-bottom: 10px;
    display: inline-block;
}

.footer-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background-color: var(--primary-color);
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    display: block;
    margin-bottom: 12px;
    transition: var(--transition);
    position: relative;
    padding-left: 15px;
}

.footer-links a::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--primary-color);
    transform: translateX(5px);
}

.social-links a {
    display: inline-block;
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    text-align: center;
    line-height: 40px;
    color: white;
    margin-right: 10px;
    transition: var(--transition);
}

.social-links a:hover {
    background-color: var(--primary-color);
    transform: translateY(-3px) rotate(10deg);
}

.copyright {
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
}

/* 响应式调整 */
@media (max-width: 992px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-section {
        padding: 80px 0;
    }
    
    .faq-title {
        font-size: 2rem;
    }
}

@media (max-width: 768px) {
    .hero-section {
        padding: 60px 0;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .qr-code-img {
        max-width: 150px;
    }
    
    .price-tag {
        font-size: 1.8rem;
    }
    
    .card-header {
        padding: 15px;
    }
    
    .card-body {
        padding: 20px;
    }
    
    .footer-title {
        margin-top: 20px;
    }
}

@media (max-width: 576px) {
    .hero-title {
        font-size: 1.8rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .btn-primary {
        padding: 10px 20px;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .faq-title {
        font-size: 1.8rem;
    }
    
    .accordion-button {
        padding: 15px;
        font-size: 0.95rem;
    }
}

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

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

/* 加载动画 */
.loading {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--dark-bg);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.loading.hide {
    opacity: 0;
    visibility: hidden;
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 5px solid rgba(255, 255, 255, 0.1);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background-color: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
    z-index: 99;
}

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

.back-to-top:hover {
    background-color: #e05e00;
    transform: translateY(-5px);
}

/* 自定义工具提示 */
.tooltip {
    position: relative;
    display: inline-block;
}

.tooltip .tooltip-text {
    visibility: hidden;
    width: 120px;
    background-color: var(--dark-bg);
    color: white;
    text-align: center;
    border-radius: 6px;
    padding: 5px;
    position: absolute;
    z-index: 1;
    bottom: 125%;
    left: 50%;
    margin-left: -60px;
    opacity: 0;
    transition: opacity 0.3s;
}

.tooltip .tooltip-text::after {
    content: "";
    position: absolute;
    top: 100%;
    left: 50%;
    margin-left: -5px;
    border-width: 5px;
    border-style: solid;
    border-color: var(--dark-bg) transparent transparent transparent;
}

.tooltip:hover .tooltip-text {
    visibility: visible;
    opacity: 1;
}

/* 自定义复选框 */
.custom-checkbox {
    display: inline-block;
    position: relative;
    padding-left: 30px;
    margin-bottom: 12px;
    cursor: pointer;
    font-size: 16px;
    user-select: none;
}

.custom-checkbox input {
    position: absolute;
    opacity: 0;
    cursor: pointer;
    height: 0;
    width: 0;
}

.checkmark {
    position: absolute;
    top: 0;
    left: 0;
    height: 20px;
    width: 20px;
    background-color: #eee;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.custom-checkbox:hover input ~ .checkmark {
    background-color: #ccc;
}

.custom-checkbox input:checked ~ .checkmark {
    background-color: var(--primary-color);
}

.checkmark:after {
    content: "";
    position: absolute;
    display: none;
}

.custom-checkbox input:checked ~ .checkmark:after {
    display: block;
}

.custom-checkbox .checkmark:after {
    left: 7px;
    top: 3px;
    width: 6px;
    height: 12px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

/* 能量计算器样式 */
.calculator-container {
    padding: 20px 0;
}

.calculator-container h3 {
    color: var(--primary-color);
    margin-bottom: 20px;
    text-align: center;
    font-weight: 600;
}

.calculator-form {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    margin-bottom: 20px;
    justify-content: center;
}

.form-group {
    flex: 1;
    min-width: 200px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 10px 15px;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 16px;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(255, 107, 0, 0.2);
    outline: none;
}

.calculator-result {
    background-color: #f8f9fa;
    border-radius: 8px;
    padding: 15px;
    text-align: center;
    margin-top: 20px;
    transition: all 0.3s ease;
}

.calculator-result p {
    margin-bottom: 8px;
    font-size: 18px;
}

.calculator-result span {
    font-weight: 700;
    color: var(--primary-color);
    font-size: 22px;
}

.calculator-result.highlight {
    background-color: rgba(255, 107, 0, 0.1);
    transform: scale(1.02);
}

.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.animate-on-scroll.animated {
    opacity: 1;
    transform: translateY(0);
}