/* CSS变量定义 */
:root {
    --primary-color: #689fc1;
    --secondary-color: #cdd586;
    --accent-color: #2e6b99;
    --light-color: #d1ddd3;
    --text-dark: #333333;
    --text-light: #666666;
    --text-muted: #999999;
    --white: #ffffff;
    --black: #000000;
    --background-light: #f8f9fa;
    --border-color: #e0e0e0;
    --shadow-light: 0 2px 10px rgba(0, 0, 0, 0.1);
    --shadow-medium: 0 4px 20px rgba(0, 0, 0, 0.15);
    --shadow-heavy: 0 8px 30px rgba(0, 0, 0, 0.2);
    --gradient-primary: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    --gradient-secondary: linear-gradient(135deg, var(--secondary-color), var(--light-color));
    --transition-base: all 0.3s ease;
    --border-radius: 12px;
    --border-radius-small: 8px;
    --border-radius-large: 20px;
}

/* 全局重置和基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'Noto Sans SC', 'Roboto', sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--white);
    overflow-x: hidden;
}

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

/* 通用样式 */
.section-title {
    font-size: 2.5rem;
    font-weight: 600;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--text-dark);
    position: relative;
}

.section-title i {
    color: var(--primary-color);
    margin-right: 0.5rem;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

/* 导航栏样式 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: var(--transition-base);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-light);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo a {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 600;
    font-size: 1.2rem;
}

.logo-img {
    width: 32px;
    height: 32px;
    margin-right: 10px;
    border-radius: var(--border-radius-small);
}

.nav-menu {
    display: flex;
    list-style: none;
    align-items: center;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius-small);
    transition: var(--transition-base);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-link:hover {
    color: var(--primary-color);
    background-color: rgba(104, 159, 193, 0.1);
}

.nav-link i {
    font-size: 0.9rem;
}

/* 汉堡菜单 */
.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.hamburger .bar {
    width: 25px;
    height: 3px;
    background-color: var(--text-dark);
    transition: var(--transition-base);
    border-radius: 2px;
}

.hamburger.active .bar:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.hamburger.active .bar:nth-child(2) {
    opacity: 0;
}

.hamburger.active .bar:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* 英雄区样式 */
.hero {
    min-height: 80vh;
    padding: 100px 0 60px;
    background: linear-gradient(135deg, rgba(104, 159, 193, 0.1), rgba(209, 221, 211, 0.1));
    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 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="%23689fc1" stroke-width="0.5" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    z-index: -1;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
    min-height: 60vh;
}

.hero-title {
    margin-bottom: 1rem;
}

.title-main {
    display: block;
    font-size: 3.5rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.title-sub {
    display: block;
    font-size: 1.8rem;
    font-weight: 300;
    color: var(--text-light);
    font-family: 'Roboto', sans-serif;
}

.hero-description {
    font-size: 1.2rem;
    color: var(--text-light);
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

.hero-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.8rem;
    margin-bottom: 2rem;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem;
    background: rgba(255, 255, 255, 0.7);
    border-radius: var(--border-radius);
    transition: var(--transition-base);
}

.feature-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-light);
}

.feature-item i {
    color: var(--primary-color);
    font-size: 1.2rem;
}

.hero-download {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.download-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 2rem;
    background: var(--gradient-primary);
    color: var(--white);
    text-decoration: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    font-size: 1.1rem;
    transition: var(--transition-base);
    box-shadow: var(--shadow-medium);
    width: fit-content;
}

.download-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-heavy);
}

.version-info {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.version-info span {
    padding: 0.5rem 1rem;
    background: rgba(104, 159, 193, 0.1);
    border-radius: var(--border-radius-small);
    font-size: 0.9rem;
    color: var(--text-light);
}

.hero-image {
    position: relative;
}

.hero-image img {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius-large);
    box-shadow: var(--shadow-heavy);
    transition: var(--transition-base);
}

.hero-image img:hover {
    transform: scale(1.02);
}

/* 新闻动态区样式 */
.news-section {
    padding: 80px 0;
    background-color: var(--background-light);
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.news-card {
    background: var(--white);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    box-shadow: var(--shadow-light);
    transition: var(--transition-base);
    border: 1px solid var(--border-color);
}

.news-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-medium);
}

.news-card.featured {
    background: var(--gradient-primary);
    color: var(--white);
    grid-column: span 2;
}

.news-date {
    font-size: 0.9rem;
    opacity: 0.8;
    margin-bottom: 0.5rem;
}

.news-title {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.news-excerpt {
    margin-bottom: 1rem;
    line-height: 1.6;
}

.news-tags {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.tag {
    padding: 0.3rem 0.8rem;
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--border-radius-small);
    font-size: 0.8rem;
}

.news-card:not(.featured) .tag {
    background: rgba(104, 159, 193, 0.1);
    color: var(--primary-color);
}

.news-link {
    color: inherit;
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition-base);
}

.news-link:hover {
    opacity: 0.8;
}

/* 媒体画廊样式 */
.gallery-section {
    padding: 80px 0;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.gallery-item {
    position: relative;
    border-radius: var(--border-radius);
    overflow: hidden;
    cursor: pointer;
    background: var(--white);
    box-shadow: var(--shadow-light);
    transition: var(--transition-base);
}

.gallery-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-medium);
}

.gallery-item img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    transition: var(--transition-base);
}

.gallery-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition-base);
}

.gallery-item:hover .gallery-overlay {
    opacity: 1;
}

.gallery-overlay i {
    color: var(--white);
    font-size: 2rem;
}

/* 用户评价区样式 */
.reviews-section {
    padding: 80px 0;
    background: var(--gradient-secondary);
}

.reviews-stats {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 3rem;
    margin-bottom: 3rem;
    align-items: center;
}

.rating-overview {
    text-align: center;
    background: var(--white);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-light);
}

.rating-score {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.rating-stars {
    font-size: 1.5rem;
    color: #ffc107;
    margin-bottom: 0.5rem;
}

.rating-count {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.rating-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.rating-tag {
    padding: 0.5rem 1rem;
    background: rgba(255, 255, 255, 0.9);
    border-radius: var(--border-radius-small);
    color: var(--text-dark);
    font-size: 0.9rem;
    font-weight: 500;
}

.reviews-carousel {
    position: relative;
    overflow: hidden;
    border-radius: var(--border-radius);
}

.review-card {
    background: var(--white);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-light);
    display: none;
    animation: fadeIn 0.5s ease;
}

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

.review-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
}

.reviewer-name {
    font-weight: 600;
    color: var(--text-dark);
}

.review-stars {
    color: #ffc107;
    margin-top: 0.25rem;
}

.review-date {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.review-text {
    line-height: 1.8;
    color: var(--text-dark);
    font-style: italic;
}

.carousel-controls {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 2rem;
}

.carousel-btn {
    width: 50px;
    height: 50px;
    border: none;
    background: var(--white);
    color: var(--primary-color);
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-base);
    box-shadow: var(--shadow-light);
}

.carousel-btn:hover {
    background: var(--primary-color);
    color: var(--white);
    transform: scale(1.1);
}

/* 版本历史样式 */
.versions-section {
    padding: 80px 0;
    background-color: var(--background-light);
}

.versions-timeline {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.version-item {
    background: var(--white);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-light);
    transition: var(--transition-base);
}

.version-item:hover {
    box-shadow: var(--shadow-medium);
}

.version-header {
    background: var(--gradient-primary);
    color: var(--white);
    padding: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.version-number {
    font-size: 1.3rem;
    font-weight: 600;
}

.version-date {
    opacity: 0.9;
}

.version-size {
    background: rgba(255, 255, 255, 0.2);
    padding: 0.3rem 0.8rem;
    border-radius: var(--border-radius-small);
    font-size: 0.9rem;
}

.version-content {
    padding: 1.5rem;
}

.version-content h4 {
    color: var(--text-dark);
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.version-content ul {
    margin-bottom: 1.5rem;
    padding-left: 1.5rem;
}

.version-content li {
    margin-bottom: 0.5rem;
    color: var(--text-light);
}

.version-download {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: var(--primary-color);
    color: var(--white);
    text-decoration: none;
    border-radius: var(--border-radius-small);
    transition: var(--transition-base);
    font-weight: 500;
}

.version-download:hover {
    background: var(--accent-color);
    transform: translateY(-2px);
}

/* 常见问题样式 */
.faq-section {
    padding: 80px 0;
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    margin-bottom: 1rem;
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-light);
    overflow: hidden;
    transition: var(--transition-base);
}

.faq-item:hover {
    box-shadow: var(--shadow-medium);
}

.faq-question {
    padding: 1.5rem;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--background-light);
    transition: var(--transition-base);
}

.faq-question:hover {
    background: rgba(104, 159, 193, 0.05);
}

.faq-question h3 {
    font-size: 1.1rem;
    color: var(--text-dark);
    margin: 0;
}

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

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

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

.faq-item.active .faq-answer {
    max-height: 200px;
}

.faq-answer p {
    padding: 1.5rem;
    margin: 0;
    color: var(--text-light);
    line-height: 1.7;
}

/* 底部样式 */
.footer {
    background: var(--text-dark);
    color: var(--white);
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h4 {
    margin-bottom: 1rem;
    color: var(--primary-color);
    font-size: 1.1rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.footer-logo img {
    width: 32px;
    height: 32px;
    border-radius: var(--border-radius-small);
}

.footer-logo span {
    font-size: 1.2rem;
    font-weight: 600;
}

.footer-description {
    color: var(--text-muted);
    line-height: 1.6;
}

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

.footer-links li {
    margin-bottom: 0.5rem;
}

.footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    transition: var(--transition-base);
}

.footer-links a:hover {
    color: var(--primary-color);
}

.footer-bottom {
    border-top: 1px solid #444;
    padding-top: 1rem;
    text-align: center;
    color: var(--text-muted);
}

.footer-bottom a {
    color: var(--primary-color);
    text-decoration: none;
}

/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: var(--white);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-base);
    z-index: 1000;
    box-shadow: var(--shadow-medium);
}

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

.back-to-top:hover {
    background: var(--accent-color);
    transform: translateY(-2px);
}

/* 图片查看器 */
.image-viewer {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-base);
}

.image-viewer.active {
    opacity: 1;
    visibility: visible;
}

.viewer-content {
    position: relative;
    max-width: 90%;
    max-height: 90%;
}

.viewer-content img {
    max-width: 100%;
    max-height: 100%;
    border-radius: var(--border-radius);
}

.close-viewer {
    position: absolute;
    top: -50px;
    right: 0;
    width: 40px;
    height: 40px;
    background: var(--white);
    color: var(--text-dark);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-base);
}

.close-viewer:hover {
    background: var(--primary-color);
    color: var(--white);
}

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

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

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: rgba(255, 255, 255, 0.98);
        flex-direction: column;
        justify-content: flex-start;
        align-items: center;
        padding-top: 2rem;
        transition: var(--transition-base);
        backdrop-filter: blur(10px);
    }

    .nav-menu.active {
        left: 0;
    }

    .hamburger {
        display: flex;
    }

    .hero-container {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }

    .title-main {
        font-size: 2.5rem;
    }

    .title-sub {
        font-size: 1.3rem;
    }

    .hero-features {
        grid-template-columns: repeat(2, 1fr);
    }

    .hero-download {
        align-items: center;
    }

    .version-info {
        justify-content: center;
    }

    .news-card.featured {
        grid-column: span 1;
    }

    .reviews-stats {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .rating-tags {
        justify-content: center;
    }

    .version-header {
        flex-direction: column;
        text-align: center;
        gap: 0.5rem;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

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

    .container {
        padding: 0 15px;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 80px 0 50px;
    }

    .title-main {
        font-size: 2rem;
    }

    .title-sub {
        font-size: 1.1rem;
    }

    .hero-description {
        font-size: 1rem;
    }

    .section-title {
        font-size: 1.8rem;
    }

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

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

    .versions-section,
    .news-section,
    .gallery-section,
    .reviews-section,
    .faq-section {
        padding: 60px 0;
    }
}

/* 打印样式 */
@media print {
    .navbar,
    .back-to-top,
    .image-viewer {
        display: none;
    }

    .hero {
        padding-top: 0;
    }

    * {
        background: transparent !important;
        color: black !important;
        box-shadow: none !important;
    }
}