/* 全局样式 */
:root {
    --crimson: #DC143C;
    --crimson-light: #F8BBD0;
    --crimson-dark: #8B0000;
    --gray-light: #f8f9fa;
    --gray: #6c757d;
    --gray-dark: #343a40;
    --white: #ffffff;
    --black: #000000;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--gray-dark);
    background-color: var(--white);
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul {
    list-style: none;
}

.btn {
    display: inline-block;
    padding: 10px 20px;
    background-color: var(--crimson);
    color: var(--white);
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-weight: 500;
    text-align: center;
    transition: var(--transition);
}

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

.btn-outline {
    background-color: transparent;
    border: 2px solid var(--crimson);
    color: var(--crimson);
}

    .btn-outline:hover {
        background-color: var(--crimson);
        color: var(--white);
    }

.section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 60px;
}

    .section-title h2 {
        font-size: 2.5rem;
        color: var(--crimson-dark);
        position: relative;
        display: inline-block;
        padding-bottom: 15px;
    }

        .section-title h2::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 3px;
            background-color: var(--crimson);
        }

/* 导航栏样式 */
#main-nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: transparent;
    z-index: 1000;
    transition: var(--transition);
    padding: 20px 0;
}

    #main-nav.navbar-scrolled {
        background-color: var(--white);
        box-shadow: var(--shadow);
        padding: 10px 0;
    }

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

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--white);
    display: flex;
    align-items: center;
}

#main-nav.navbar-scrolled .logo {
    color: var(--crimson);
}

.logo i {
    margin-right: 10px;
    font-size: 1.8rem;
}

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

    .nav-links a {
        color: var(--white);
        font-weight: 500;
        position: relative;
    }

#main-nav.navbar-scrolled .nav-links a {
    color: var(--gray-dark);
}

.nav-links a:hover {
    color: var(--crimson);
}

#main-nav.navbar-scrolled .nav-links a:hover {
    color: var(--crimson);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--crimson);
    transition: var(--transition);
}

.nav-links a:hover::after {
    width: 100%;
}

.hamburger {
    display: none;
    font-size: 1.5rem;
    color: var(--white);
    cursor: pointer;
}

#main-nav.navbar-scrolled .hamburger {
    color: var(--crimson);
}

/* 英雄区域样式 */
.hero {
    height: 100vh;
    background: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7)), url('https://picsum.photos/id/180/1920/1080') center/cover no-repeat;
    display: flex;
    align-items: center;
    color: var(--white);
    text-align: center;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 20px;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
    line-height: 1.2;
}

    .hero h1 span {
        color: var(--crimson);
    }

.hero p {
    font-size: 1.2rem;
    margin-bottom: 40px;
    opacity: 0.9;
}

.hero-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
}

/* 服务区域样式 */
.services {
    background-color: var(--gray-light);
}

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

.service-card {
    background-color: var(--white);
    padding: 30px;
    border-radius: 8px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    text-align: center;
}

    .service-card:hover {
        transform: translateY(-10px);
        box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
    }

    .service-card i {
        font-size: 2.5rem;
        color: var(--crimson);
        margin-bottom: 20px;
    }

    .service-card h3 {
        font-size: 1.5rem;
        margin-bottom: 15px;
        color: var(--gray-dark);
    }

/* 产品区域样式 */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.product-card {
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

    .product-card:hover {
        transform: translateY(-10px);
        box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
    }

.product-img {
    height: 200px;
    overflow: hidden;
}

    .product-img img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: var(--transition);
    }

.product-card:hover .product-img img {
    transform: scale(1.05);
}

.product-info {
    padding: 20px;
}

    .product-info h3 {
        margin-bottom: 10px;
        color: var(--gray-dark);
    }

    .product-info p {
        color: var(--gray);
        margin-bottom: 20px;
    }

.product-price {
    font-weight: 700;
    color: var(--crimson);
    margin-bottom: 15px;
}

/* 关于我们区域样式 */
.about {
    background-color: var(--gray-light);
    display: flex;
    align-items: center;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-text h3 {
    font-size: 2rem;
    margin-bottom: 20px;
    color: var(--crimson-dark);
}

.about-text p {
    margin-bottom: 20px;
    line-height: 1.8;
}

.about-img img {
    width: 100%;
    border-radius: 8px;
    box-shadow: var(--shadow);
}

/* 联系我们区域样式 */
.contact {
    background-color: var(--white);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-info h3 {
    font-size: 2rem;
    margin-bottom: 30px;
    color: var(--crimson-dark);
}

.contact-item {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
}

    .contact-item i {
        font-size: 1.5rem;
        color: var(--crimson);
        margin-right: 15px;
        width: 40px;
        height: 40px;
        display: flex;
        align-items: center;
        justify-content: center;
        border-radius: 50%;
        background-color: var(--crimson-light);
    }

.contact-form {
    background-color: var(--gray-light);
    padding: 30px;
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.form-group {
    margin-bottom: 20px;
}

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

    .form-group input,
    .form-group textarea {
        width: 100%;
        padding: 12px;
        border: 1px solid #ddd;
        border-radius: 4px;
        font-family: inherit;
        transition: var(--transition);
    }

        .form-group input:focus,
        .form-group textarea:focus {
            outline: none;
            border-color: var(--crimson);
            box-shadow: 0 0 0 3px rgba(220, 20, 60, 0.2);
        }

    .form-group textarea {
        resize: vertical;
        min-height: 150px;
    }

/* 页脚样式 */
footer {
    background-color: var(--gray-dark);
    color: var(--white);
    padding: 60px 0 20px;
}

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

.footer-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--crimson);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
}

    .footer-logo i {
        margin-right: 10px;
    }

.footer-about p {
    opacity: 0.8;
    margin-bottom: 20px;
}

.footer-social {
    display: flex;
    gap: 15px;
}

    .footer-social a {
        width: 40px;
        height: 40px;
        border-radius: 50%;
        background-color: rgba(255, 255, 255, 0.1);
        display: flex;
        align-items: center;
        justify-content: center;
        transition: var(--transition);
    }

        .footer-social a:hover {
            background-color: var(--crimson);
            transform: translateY(-5px);
        }

.footer-title {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--crimson);
}

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a {
    opacity: 0.8;
    transition: var(--transition);
}

    .footer-links a:hover {
        opacity: 1;
        color: var(--crimson);
        padding-left: 5px;
    }

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    opacity: 0.8;
}

/* 最新产品页面样式 */
.latest-products {
    padding: 60px 0;
}

/* 产品下载页面样式 */
.downloads {
    padding: 60px 0;
    background-color: var(--gray-light);
}

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

.download-card {
    background-color: var(--white);
    padding: 30px;
    border-radius: 8px;
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
}

.download-info {
    flex-grow: 1;
}

    .download-info h3 {
        margin-bottom: 10px;
        color: var(--gray-dark);
    }

.download-version {
    color: var(--crimson);
    font-weight: 500;
    margin-bottom: 15px;
}

.download-date {
    color: var(--gray);
    font-size: 0.9rem;
    margin-bottom: 20px;
}

.download-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

/* 购买秘钥页面样式 */
.license-keys {
    padding: 60px 0;
}

.pricing-table {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.pricing-card {
    background-color: var(--white);
    border-radius: 8px;
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: var(--transition);
}

    .pricing-card:hover {
        transform: translateY(-10px);
        box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
    }

.pricing-header {
    background-color: var(--crimson);
    color: var(--white);
    padding: 20px;
    text-align: center;
}

    .pricing-header.popular {
        position: relative;
    }

        .pricing-header.popular::after {
            content: '热门';
            position: absolute;
            top: 0;
            right: 0;
            background-color: var(--crimson-dark);
            padding: 5px 15px;
            font-size: 0.8rem;
            font-weight: 600;
        }

    .pricing-header h3 {
        font-size: 1.5rem;
        margin-bottom: 10px;
    }

.pricing-price {
    font-size: 2.5rem;
    font-weight: 700;
}

.pricing-features {
    padding: 30px;
}

    .pricing-features li {
        padding: 10px 0;
        border-bottom: 1px solid #eee;
        display: flex;
        align-items: center;
    }

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

    .pricing-features i {
        color: var(--crimson);
        margin-right: 10px;
    }

.pricing-cta {
    padding: 0 30px 30px;
    text-align: center;
}

/* 售后服务页面样式 */
.support {
    padding: 60px 0;
    background-color: var(--gray-light);
}

.support-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.support-faq h3 {
    font-size: 1.8rem;
    margin-bottom: 30px;
    color: var(--crimson-dark);
}

.faq-item {
    margin-bottom: 20px;
    background-color: var(--white);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.faq-question {
    padding: 15px 20px;
    background-color: var(--white);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 500;
}

    .faq-question i {
        color: var(--crimson);
        transition: var(--transition);
    }

.faq-answer {
    padding: 0 20px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
}

    .faq-answer.active {
        padding: 20px;
        max-height: 500px;
    }

/* 响应式样式 */
@media (max-width: 992px) {
    .about-content,
    .contact-content,
    .support-content {
        grid-template-columns: 1fr;
    }

    .about-img {
        order: -1;
    }
}

@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }

    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        height: 100vh;
        width: 80%;
        max-width: 300px;
        background-color: var(--white);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 30px;
        box-shadow: -2px 0 10px rgba(0, 0, 0, 0.1);
        transition: right 0.3s ease;
        z-index: 999;
    }

        .nav-links.active {
            right: 0;
        }

        .nav-links a {
            color: var(--gray-dark);
            font-size: 1.2rem;
        }

    .hamburger {
        display: block;
        z-index: 1000;
    }

    .section-title h2 {
        font-size: 2rem;
    }
}

@media (max-width: 576px) {
    .hero h1 {
        font-size: 2rem;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

    .section {
        padding: 60px 0;
    }
}