/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: "Microsoft YaHei", "微软雅黑", Arial, sans-serif;
    line-height: 1.8;
    color: #333;
    background: #f8f9fa;
    min-height: 100vh;
}

p {
    text-indent: 2em;
    margin-bottom: 0;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s;
}

/* 导航栏 */
.navbar {
    background: linear-gradient(135deg, #2d5016 0%, #4a7c23 100%);
    padding: 1rem 2rem;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 20px rgba(45, 80, 22, 0.15);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.8rem;
    font-weight: bold;
    color: #fff;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo-icon {
    width: 2.5rem;
    height: 2.5rem;
    object-fit: contain;
}

.nav-menu {
    display: flex;
    gap: 1rem;
}

.nav-item {
    position: relative;
}

.nav-menu a {
    text-decoration: none;
    color: rgba(255, 255, 255, 0.85);
    font-weight: 500;
    transition: all 0.3s;
    padding: 0.5rem 1.5rem;
    border-radius: 25px;
    display: block;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: #fff;
    background: rgba(255, 255, 255, 0.2);
}

/* 下拉菜单 */
.dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    background: white;
    min-width: 200px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    border-radius: 10px;
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.3s ease;
    padding: 0.5rem 0;
}

.nav-item:hover .dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown a {
    color: #333;
    padding: 0.8rem 1.5rem;
    border-radius: 0;
    display: block;
    white-space: nowrap;
}

.dropdown a:hover {
    background: #f4a460;
    color: white;
}

.dropdown-divider {
    height: 1px;
    background: #e9ecef;
    margin: 0.5rem 0;
}

/* 主页面横幅 */
.hero {
    margin-top: 80px;
    background: linear-gradient(135deg, rgba(45, 80, 22, 0.95) 0%, rgba(74, 124, 35, 0.95) 100%);
    padding: 8rem 2rem;
    text-align: center;
    color: white;
    min-height: 80vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: 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 0 100 100"><text x="50" y="50" font-size="80" text-anchor="middle" fill="white" opacity="0.03">♪</text></svg>');
    background-size: 200px;
    pointer-events: none;
}

.hero-title {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    font-weight: bold;
}

.hero-subtitle {
    font-size: 1.8rem;
    margin-bottom: 3rem;
    opacity: 0.95;
}

.hero-btn {
    display: inline-block;
    padding: 1rem 3rem;
    background: #f4a460;
    color: white;
    text-decoration: none;
    border-radius: 50px;
    font-weight: bold;
    font-size: 1.1rem;
    transition: all 0.3s;
    box-shadow: 0 5px 20px rgba(244, 164, 96, 0.4);
    margin: 0.5rem;
    border: none;
    cursor: pointer;
}

.hero-btn:hover {
    transform: translateY(-3px);
    background: #e69546;
    box-shadow: 0 8px 30px rgba(244, 164, 96, 0.5);
}

.hero-btn.primary {
    background: white;
    color: #4a7c23;
}

.hero-btn.primary:hover {
    background: #f8f9fa;
}

/* 模块展示 */
.modules-section {
    padding: 5rem 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    color: #2d5016;
    margin-bottom: 3rem;
    font-weight: bold;
}

.modules-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.module-card {
    background: white;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s;
}

.module-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(74, 124, 35, 0.2);
}

.module-image {
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    color: white;
}

.module-1 .module-image {
    background: linear-gradient(135deg, #4a7c23 0%, #2d5016 100%);
}

.module-2 .module-image {
    background: linear-gradient(135deg, #f4a460 0%, #d4a574 100%);
}

.module-3 .module-image {
    background: linear-gradient(135deg, #8cc9a9 0%, #a8d5ba 100%);
}

.module-4 .module-image {
    background: linear-gradient(135deg, #c9956c 0%, #b8860b 100%);
}

.module-content {
    padding: 2rem;
}

.module-title {
    font-size: 1.8rem;
    color: #2d5016;
    margin-bottom: 1rem;
    font-weight: bold;
}

.module-desc {
    color: #666;
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.module-features {
    list-style: none;
    margin-bottom: 1.5rem;
}

.module-features li {
    padding: 0.5rem 0;
    color: #555;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.module-features li::before {
    content: '✓';
    color: #4a7c23;
    font-weight: bold;
}

.module-btn {
    display: inline-block;
    padding: 0.8rem 2rem;
    background: #4a7c23;
    color: white;
    text-decoration: none;
    border-radius: 25px;
    font-weight: bold;
    transition: all 0.3s;
}

.module-btn:hover {
    background: #3d661c;
    transform: scale(1.05);
}

/* 模块首页样式 */
.module-header {
    margin-top: 80px;
    background: linear-gradient(135deg, #4a7c23 0%, #2d5016 100%);
    padding: 6rem 2rem;
    text-align: center;
    color: white;
}

.module-header h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    font-weight: bold;
}

.module-header p {
    font-size: 1.3rem;
    opacity: 0.9;
}

.module-content {
    padding: 4rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.intro-box {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    margin-bottom: 3rem;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
}

.intro-box h2 {
    color: #2d5016;
    margin-bottom: 1rem;
    font-size: 1.8rem;
}

.intro-box p {
    color: #666;
    line-height: 1.8;
    text-indent: 2em;
    margin-bottom: 0;
}

.page-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.page-card {
    background: white;
    border-radius: 15px;
    padding: 2.5rem 2rem;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s;
}

.page-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(74, 124, 35, 0.15);
}

.card-icon {
    font-size: 4rem;
    margin-bottom: 1.5rem;
    display: flex;
    justify-content: center;
    align-items: center;
}

.card-icon img {
    width: 4rem !important;
    height: 4rem !important;
    max-width: 4rem !important;
    max-height: 4rem !important;
    object-fit: contain;
}

.page-card h3 {
    color: #2d5016;
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.page-card p {
    color: #666;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.card-btn {
    display: inline-block;
    padding: 0.8rem 2rem;
    background: linear-gradient(135deg, #f4a460 0%, #e69546 100%);
    color: white;
    text-decoration: none;
    border-radius: 25px;
    font-weight: bold;
    transition: all 0.3s;
}

.card-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 5px 15px rgba(244, 164, 96, 0.4);
}

/* 页面内容样式 */
.breadcrumb {
    margin-top: 100px;
    padding: 1rem 2rem;
    background: white;
    color: #666;
    font-size: 0.9rem;
}

.breadcrumb a {
    color: #4a7c23;
}

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

.page-content {
    padding: 3rem 2rem;
    max-width: 1000px;
    margin: 0 auto;
}

.page-content h1 {
    font-size: 2.5rem;
    color: #2d5016;
    margin-bottom: 1.5rem;
    font-weight: bold;
}

.page-intro {
    background: linear-gradient(135deg, #f4a460 0%, #e69546 100%);
    color: white;
    padding: 2rem;
    border-radius: 15px;
    margin-bottom: 3rem;
}

.page-intro p {
    font-size: 1.1rem;
    line-height: 1.8;
    text-indent: 2em;
    margin-bottom: 0;
}

.content-section {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    margin-bottom: 2rem;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
}

.content-section p {
    color: #666;
    line-height: 1.8;
    margin-bottom: 0;
    text-align: justify;
    text-indent: 2em;
}

.content-section h2 {
    color: #2d5016;
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 3px solid #4a7c23;
}

.page-nav {
    display: flex;
    justify-content: space-between;
    margin-top: 2rem;
    padding: 2rem;
}

.nav-btn {
    display: inline-block;
    padding: 0.8rem 2rem;
    background: #4a7c23;
    color: white;
    text-decoration: none;
    border-radius: 25px;
    font-weight: bold;
    transition: all 0.3s;
}

.nav-btn:hover {
    background: #3d661c;
    transform: translateY(-2px);
}

/* 图片占位符 */
.image-placeholder,
.video-placeholder,
.audio-placeholder {
    min-height: 200px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: white;
    border-radius: 10px;
    margin: 1rem 0;
}

.image-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin: 1.5rem 0;
}

.image-card {
    background: transparent;
    border-radius: 12px;
    overflow: hidden;
}

.image-card img {
    width: 100%;
    height: auto;
    display: block;
}

.image-caption {
    padding: 1.5rem;
}

.image-caption h3 {
    font-size: 1.1rem;
    color: #2d5016;
    margin-bottom: 0.8rem;
    line-height: 1.5;
}

.image-caption .source {
    font-size: 0.9rem;
    color: #666;
    margin-bottom: 0.8rem;
}

.source-link {
    display: inline-block;
    color: #4a7c23;
    font-weight: 500;
    padding: 0.5rem 1rem;
    background: #f0f7e8;
    border-radius: 5px;
    margin-top: 0.5rem;
    transition: all 0.3s;
}

.source-link:hover {
    background: #4a7c23;
    color: white;
}

/* 视频样式 */
.video-section {
    margin: 2rem 0;
}

.video-wrapper {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    max-width: 900px;
    margin: 0 auto;
}

.video-wrapper video {
    width: 100%;
    aspect-ratio: 16 / 9;
    display: block;
    background: #000;
    object-fit: contain;
}

.video-caption {
    padding: 1.5rem;
    text-align: center;
}

.video-caption h3 {
    font-size: 1.3rem;
    color: #2d5016;
    margin-bottom: 0.5rem;
}

.video-caption p {
    font-size: 1rem;
    color: #666;
}

.placeholder-icon {
    font-size: 3rem;
    margin-bottom: 0.5rem;
}

.placeholder-text {
    font-size: 1rem;
}

/* 时间线 */
.timeline {
    margin: 2rem 0;
}

.timeline-item {
    display: flex;
    margin-bottom: 1.5rem;
    align-items: flex-start;
}

.timeline-date {
    width: 150px;
    font-weight: bold;
    color: #4a7c23;
    flex-shrink: 0;
}

.timeline-content {
    flex: 1;
    padding-left: 1rem;
    border-left: 3px solid #f4a460;
}

.timeline-content h4 {
    color: #2d5016;
    margin-bottom: 0.5rem;
}

/* 传承人列表 */
.inheritors-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 1.5rem;
}

.inheritor-card {
    background: linear-gradient(135deg, #fafbfc 0%, #f0f1f3 100%);
    padding: 2rem;
    border-radius: 10px;
    border-left: 4px solid #4a7c23;
    height: auto;
}

.inheritor-card h3 {
    color: #2d5016;
    margin-bottom: 1rem;
    font-size: 1.2rem;
    border-bottom: 2px solid #4a7c23;
    padding-bottom: 0.5rem;
}

.inheritor-info p {
    color: #555;
    line-height: 1.7;
    margin-bottom: 0;
    text-indent: 2em;
}

.inheritor-info strong {
    color: #2d5016;
}

/* 新闻网格 */
.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.news-card {
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s, box-shadow 0.3s;
    height: auto;
}

.news-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.12);
}

.news-link {
    display: block;
    text-decoration: none;
    color: inherit;
}

.news-link img {
    width: 100%;
    height: auto;
    display: block;
}

.news-content {
    padding: 1.2rem;
}

.news-content h4 {
    color: #2d5016;
    margin: 0 0 0.8rem 0;
    font-size: 1.05rem;
    line-height: 1.4;
}

.news-source {
    color: #999;
    font-size: 0.85rem;
    margin: 0;
}

.news-link .read-more {
    display: inline-block;
    margin-top: 0.8rem;
    padding: 0.5rem 1rem;
    background: #4a7c23;
    color: white;
    border-radius: 5px;
    font-size: 0.9rem;
    transition: all 0.3s;
}

.news-link:hover .read-more {
    background: #3d661c;
}

/* 特性卡片 */
.feature-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin: 1.5rem 0;
}

.feature-card {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    padding: 1.5rem;
    border-radius: 10px;
    text-align: center;
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.feature-card h4 {
    color: #2d5016;
    margin-bottom: 0.5rem;
}

.feature-card p {
    color: #666;
    font-size: 0.9rem;
}

/* 底部 */
.footer {
    background: #2d5016;
    color: white;
    padding: 3rem 2rem 1rem;
    margin-top: 5rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto 3rem;
}

.footer-section h3 {
    margin-bottom: 1rem;
    color: #f4a460;
}

.footer-section p {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.8;
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: rgba(255, 255, 255, 0.8);
}

.footer-section a:hover {
    color: #f4a460;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.7);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.3rem;
    }

    .navbar {
        flex-direction: column;
        padding: 1rem;
    }

    .nav-menu {
        flex-wrap: wrap;
        justify-content: center;
        margin-top: 1rem;
    }

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

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

    .three-column-layout {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .two-column-layout {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .sheet-music-gallery {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .inheritors-list {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
}

/* 雅韵特质页面样式 */
.feature-table {
    margin: 2rem 0;
}

.feature-table table {
    width: 100%;
    border-collapse: collapse;
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.feature-table th {
    background: linear-gradient(135deg, #2d5016 0%, #4a7c23 100%);
    color: white;
    padding: 1rem;
    text-align: left;
    font-weight: bold;
}

.feature-table td {
    padding: 1rem;
    border-bottom: 1px solid #e9ecef;
    text-align: left;
}

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

.content-text {
    background: transparent;
    padding: 2rem;
    margin: 2rem 0;
}

.content-text h3 {
    color: #2d5016;
    margin-bottom: 1rem;
    margin-top: 1.5rem;
}

.content-text h3:first-child {
    margin-top: 0;
}

.content-text p,
p.content-text {
    color: #666;
    line-height: 1.8;
    margin-bottom: 0;
    margin-top: 0;
    text-align: justify;
    text-indent: 2em;
}

.card-category {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.three-column-layout {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 2rem;
}

.three-column-layout .column {
    background: linear-gradient(135deg, #fafbfc 0%, #f0f1f3 100%);
    padding: 2rem 1.5rem;
    border-radius: 10px;
    border-left: 4px solid #4a7c23;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.three-column-layout .column h3 {
    color: #2d5016;
    margin-bottom: 0.8rem;
    font-size: 1.3rem;
    border-bottom: 2px solid #4a7c23;
    padding-bottom: 0.5rem;
}

.three-column-layout .column p {
    color: #555;
    line-height: 1.7;
    margin-bottom: 0;
    font-size: 0.95rem;
    text-indent: 2em;
}

/* 两栏布局 */
.two-column-layout {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    margin-top: 2rem;
}

.two-column-layout .column {
    padding: 1rem;
}

/* 视频卡片样式 */
.video-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.video-card {
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    height: auto;
}

.video-card video {
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: contain;
    display: block;
}

.video-caption {
    padding: 1rem;
    text-align: center;
}

.video-caption h4 {
    color: #2d5016;
    margin: 0;
    font-size: 1rem;
}

/* 简谱画廊样式 */
.sheet-music-gallery {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.sheet-music-item {
    background: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.06);
}

.sheet-music-item img {
    width: 100%;
    height: auto;
    display: block;
}

.category-card {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    padding: 1.5rem;
    border-radius: 10px;
    border-left: 4px solid #4a7c23;
}

.category-card h4 {
    color: #2d5016;
    margin-bottom: 0.8rem;
    font-size: 1.1rem;
}

.category-card p {
    color: #666;
    line-height: 1.6;
    font-size: 0.95rem;
    text-indent: 2em;
    margin-bottom: 0;
}

.string-description,
.rhythm-description {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin: 1.5rem 0;
}

.string-item,
.rhythm-item {
    background: linear-gradient(135deg, #f8f9fa 0%, #fff 100%);
    padding: 1.2rem;
    border-radius: 8px;
    border-left: 3px solid #f4a460;
}

.string-item strong,
.rhythm-item strong {
    color: #2d5016;
    display: block;
    margin-bottom: 0.5rem;
    font-size: 1rem;
}

.string-item p,
.rhythm-item p {
    color: #666;
    margin: 0;
    font-size: 0.95rem;
    text-indent: 2em;
}

.instrument-layout {
    text-align: center;
    padding: 2rem;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-radius: 10px;
    margin-top: 1.5rem;
    font-weight: 500;
    color: #2d5016;
}