/* ===== 科技成果转化平台 - 白色清爽主题 ===== */

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

:root {
    /* 主色调 */
    --primary-blue: #0284c7;
    --primary-purple: #7c3aed;
    --primary-pink: #ec4899;

    /* 背景色 */
    --bg-white: #ffffff;
    --bg-light: #f8fafc;
    --bg-gray: #f1f5f9;
    --bg-hover: #e2e8f0;

    /* 文字颜色 */
    --text-dark: #1e293b;
    --text-gray: #475569;
    --text-light: #64748b;

    /* 边框颜色 */
    --border-light: #e2e8f0;
    --border-gray: #cbd5e1;

    /* 阴影 */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.1);
}

body {
    font-family: 'Microsoft YaHei', -apple-system, BlinkMacSystemFont, 'Segoe UI', Arial, sans-serif;
    background: var(--bg-light);
    color: var(--text-dark);
    line-height: 1.6;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ===== 导航栏 ===== */
.navbar {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: var(--bg-white);
    border-bottom: 1px solid var(--border-light);
    box-shadow: var(--shadow);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 20px;
}

.nav-brand h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-blue);
    letter-spacing: 1px;
}

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

.nav-menu a {
    color: var(--text-gray);
    text-decoration: none;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    transition: all 0.3s;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--primary-blue);
    background: var(--bg-gray);
}

/* ===== 按钮 ===== */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: 8px;
    transition: all 0.3s;
    cursor: pointer;
    border: 2px solid transparent;
}

.btn-primary {
    background: var(--primary-blue);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    background: #0369a1;
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.btn-secondary {
    background: white;
    color: var(--primary-blue);
    border-color: var(--primary-blue);
}

.btn-secondary:hover {
    background: var(--primary-blue);
    color: white;
}

.btn-block {
    width: 100%;
    text-align: center;
}

/* ===== 英雄区域 ===== */
.hero {
    min-height: 80vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
    padding: 4rem 0;
}

.hero-content {
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    color: var(--text-dark);
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-gray);
    margin-bottom: 2rem;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    margin-top: 4rem;
}

.stat-item {
    text-align: center;
    padding: 2rem;
    background: white;
    border-radius: 12px;
    box-shadow: var(--shadow);
}

.stat-item h3 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-blue);
    margin-bottom: 0.5rem;
}

.stat-item p {
    color: var(--text-gray);
    font-size: 0.95rem;
}

/* ===== 区块标题 ===== */
.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 3rem;
}

/* ===== 特性区域 ===== */
.features,
.highlighted-achievements,
.achievements-section,
.about-intro,
.team-section,
.stats-section,
.news-section,
.contact-section {
    padding: 5rem 0;
}

.features {
    background: var(--bg-white);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid var(--border-light);
    text-align: center;
    transition: all 0.3s;
    box-shadow: var(--shadow-sm);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-blue);
}

.feature-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 1.5rem;
    color: var(--primary-blue);
}

.feature-card h3 {
    font-size: 1.25rem;
    color: var(--text-dark);
    margin-bottom: 1rem;
    font-weight: 600;
}

.feature-card p {
    color: var(--text-gray);
    line-height: 1.7;
}

/* ===== 成果卡片 ===== */
.achievements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2rem;
}

.achievement-card {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--border-light);
    transition: all 0.3s;
    box-shadow: var(--shadow-sm);
}

.achievement-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-blue);
}

.achievement-header {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-purple) 100%);
    color: white;
    padding: 1.5rem;
}

.achievement-header h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.achievement-tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.tag {
    background: rgba(255, 255, 255, 0.2);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
}

.achievement-body {
    padding: 1.5rem;
}

.achievement-field {
    color: var(--primary-blue);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.achievement-maturity {
    display: inline-block;
    background: #ede9fe;
    color: var(--primary-purple);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 1rem;
}

.achievement-description {
    color: var(--text-gray);
    line-height: 1.7;
    margin-bottom: 1rem;
}

.achievement-footer {
    border-top: 1px solid var(--border-light);
    padding-top: 1rem;
}

/* ===== 合作伙伴 ===== */
.partners {
    background: var(--bg-light);
    padding: 5rem 0;
}

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

.partner-card {
    background: white;
    border: 1px solid var(--border-light);
    border-radius: 12px;
    padding: 2.5rem 1.5rem;
    text-align: center;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-dark);
    box-shadow: var(--shadow-sm);
    transition: all 0.3s;
}

.partner-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-blue);
    color: var(--primary-blue);
}

/* ===== 页面头部 ===== */
.page-header {
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
    padding: 4rem 0;
    text-align: center;
}

.page-header h1 {
    font-size: 2.5rem;
    color: var(--text-dark);
    margin-bottom: 1rem;
    font-weight: 700;
}

.page-header p {
    font-size: 1.125rem;
    color: var(--text-gray);
}

/* ===== 筛选侧边栏 ===== */
.achievements-layout {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 2rem;
    margin-top: 2rem;
}

.filter-sidebar {
    background: white;
    border: 1px solid var(--border-light);
    border-radius: 12px;
    padding: 1.5rem;
    height: fit-content;
    position: sticky;
    top: 100px;
    box-shadow: var(--shadow-sm);
}

.filter-section {
    margin-bottom: 2rem;
}

.filter-section h3 {
    color: var(--text-dark);
    font-size: 1.125rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.search-box {
    display: flex;
    border: 1px solid var(--border-gray);
    border-radius: 8px;
    overflow: hidden;
}

.search-box input {
    flex: 1;
    padding: 0.75rem;
    border: none;
    background: var(--bg-white);
    color: var(--text-dark);
    outline: none;
}

.search-box button {
    background: var(--primary-blue);
    border: none;
    padding: 0.75rem 1rem;
    cursor: pointer;
    color: white;
}

.search-box button svg {
    width: 20px;
    height: 20px;
}

.filter-options {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.filter-option {
    display: flex;
    align-items: center;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 6px;
    transition: background 0.2s;
}

.filter-option:hover {
    background: var(--bg-gray);
}

.filter-option input[type="checkbox"] {
    width: 18px;
    height: 18px;
    margin-right: 0.75rem;
    cursor: pointer;
}

.filter-option span {
    color: var(--text-gray);
    font-weight: 500;
}

/* ===== 详情页 ===== */
.breadcrumb {
    padding: 1.5rem 0;
    background: var(--bg-white);
    border-bottom: 1px solid var(--border-light);
}

.back-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-gray);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

.back-btn:hover {
    color: var(--primary-blue);
}

.back-btn svg {
    width: 20px;
    height: 20px;
}

.achievement-detail {
    padding: 3rem 0;
}

.detail-header {
    background: white;
    border: 1px solid var(--border-light);
    border-radius: 12px;
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow-sm);
}

.detail-header h1 {
    color: var(--text-dark);
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.detail-content {
    display: grid;
    grid-template-columns: 1fr 350px;
    gap: 2rem;
}

.detail-main {
    display: flex;
    flex-direction: column;
}

.detail-section {
    background: white;
    border: 1px solid var(--border-light);
    border-radius: 12px;
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow-sm);
}

.detail-section:last-child {
    margin-bottom: 0;
}

.detail-section h2 {
    color: var(--text-dark);
    font-size: 1.5rem;
    margin-bottom: 1rem;
    font-weight: 600;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid var(--primary-blue);
}

.detail-section p,
.detail-section div {
    color: var(--text-gray);
    line-height: 1.8;
}

.tech-specs {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.spec-item {
    background: var(--bg-gray);
    padding: 1rem;
    border-radius: 8px;
    border: 1px solid var(--border-light);
}

.spec-label {
    color: var(--text-light);
    font-size: 0.875rem;
    margin-bottom: 0.25rem;
}

.spec-value {
    color: var(--primary-blue);
    font-size: 1.25rem;
    font-weight: 700;
}

.conversion-info {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.info-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.info-label {
    color: var(--text-light);
    font-weight: 500;
}

.info-value {
    color: var(--primary-blue);
    font-weight: 600;
    font-size: 1.125rem;
}

.detail-sidebar {
    display: flex;
    flex-direction: column;
}

.sidebar-card {
    background: white;
    border: 1px solid var(--border-light);
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow-sm);
}

.sidebar-card:last-child {
    margin-bottom: 0;
}

.sidebar-card h3 {
    color: var(--text-dark);
    font-size: 1.125rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.sidebar-card p,
.sidebar-card li {
    color: var(--text-gray);
    line-height: 1.7;
}

.owner-info {
    background: var(--bg-gray);
    border-left: 3px solid var(--primary-purple);
    padding: 1rem;
    margin-top: 1rem;
    border-radius: 4px;
}

.owner-info strong {
    color: var(--text-dark);
    display: block;
    margin-bottom: 0.5rem;
}

.contact-info-detail {
    background: var(--bg-gray);
    border: 1px solid var(--border-light);
    border-radius: 8px;
    padding: 0.75rem;
    margin-top: 0.5rem;
}

.contact-info-detail a {
    color: var(--primary-blue);
    text-decoration: none;
}

.contact-info-detail a:hover {
    text-decoration: underline;
}

.info-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.info-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border-light);
}

.info-item:last-child {
    border-bottom: none;
}

.info-item-label {
    color: var(--text-light);
    font-size: 0.95rem;
}

.info-item-value {
    color: var(--text-dark);
    font-weight: 600;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-gray);
}

.contact-item svg {
    width: 18px;
    height: 18px;
    color: var(--primary-blue);
}

.related-achievements {
    margin-top: 4rem;
    padding-top: 3rem;
    border-top: 2px solid var(--border-light);
}

/* ===== 关于页面 ===== */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.about-text p {
    color: var(--text-gray);
    line-height: 1.8;
    margin-bottom: 1rem;
}

.mission-vision {
    background: var(--bg-white);
    padding: 5rem 0;
}

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

.mv-card {
    background: white;
    border: 1px solid var(--border-light);
    border-radius: 12px;
    padding: 2rem;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s;
}

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

.mv-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 1.5rem;
    color: var(--primary-blue);
}

.mv-card h3 {
    font-size: 1.25rem;
    color: var(--text-dark);
    margin-bottom: 1rem;
    font-weight: 600;
}

.mv-card p {
    color: var(--text-gray);
    line-height: 1.7;
}

/* ===== 团队卡片 ===== */
.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.team-card {
    background: white;
    border: 1px solid var(--border-light);
    border-radius: 12px;
    padding: 2rem;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s;
}

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

.team-avatar {
    width: 100px;
    height: 100px;
    margin: 0 auto 1rem;
    border-radius: 50%;
    overflow: hidden;
}

.team-card h3 {
    font-size: 1.125rem;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.team-role {
    color: var(--primary-blue);
    font-size: 0.95rem;
    margin-bottom: 1rem;
}

.team-desc {
    color: var(--text-gray);
    line-height: 1.7;
    font-size: 0.95rem;
}

/* ===== 统计卡片 ===== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.stat-card {
    background: white;
    border: 1px solid var(--border-light);
    border-radius: 12px;
    padding: 2rem;
    text-align: center;
    box-shadow: var(--shadow-sm);
}

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

.stat-label {
    color: var(--text-dark);
    font-size: 1.125rem;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.stat-card p {
    color: var(--text-gray);
    font-size: 0.95rem;
}

/* ===== 时间线 ===== */
.timeline {
    max-width: 800px;
    margin: 2rem auto;
    position: relative;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--border-gray);
    transform: translateX(-50%);
}

.timeline-item {
    position: relative;
    margin-bottom: 3rem;
    display: flex;
    justify-content: flex-end;
}

.timeline-item:nth-child(even) {
    justify-content: flex-start;
}

.timeline-dot {
    position: absolute;
    left: 50%;
    top: 20px;
    transform: translateX(-50%);
    width: 16px;
    height: 16px;
    background: var(--primary-blue);
    border: 3px solid white;
    border-radius: 50%;
    box-shadow: 0 0 0 3px var(--border-light);
    z-index: 2;
}

.timeline-content {
    background: white;
    border: 1px solid var(--border-light);
    border-radius: 12px;
    padding: 1.5rem;
    width: 45%;
    box-shadow: var(--shadow-sm);
}

.timeline-content h3 {
    color: var(--text-dark);
    font-size: 1.125rem;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.timeline-content p {
    color: var(--text-gray);
    line-height: 1.7;
}

/* ===== 新闻卡片 ===== */
.news-section {
    background: var(--bg-white);
}

.news-tabs {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    justify-content: center;
    flex-wrap: wrap;
}

.tab-btn {
    background: white;
    border: 1px solid var(--border-gray);
    color: var(--text-gray);
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 500;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s;
}

.tab-btn:hover,
.tab-btn.active {
    background: var(--primary-blue);
    color: white;
    border-color: var(--primary-blue);
}

.news-list {
    display: grid;
    gap: 2rem;
}

.news-card {
    background: white;
    border: 1px solid var(--border-light);
    border-radius: 12px;
    overflow: hidden;
    display: grid;
    grid-template-columns: 2fr 1fr;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s;
    position: relative;
}

.news-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-3px);
    border-color: var(--primary-blue);
}

.news-content {
    padding: 2rem;
    position: relative;
    display: flex;
    flex-direction: column;
}

.news-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 1rem;
    width: fit-content;
}

.badge-success {
    background: #dbeafe;
    color: var(--primary-blue);
}

.badge-industry {
    background: #ede9fe;
    color: var(--primary-purple);
}

.badge-event {
    background: #fce7f3;
    color: var(--primary-pink);
}

.news-content h3 {
    color: var(--text-dark);
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    font-weight: 600;
    line-height: 1.4;
}

.news-meta {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-light);
    font-size: 0.875rem;
    flex-wrap: wrap;
}

.news-excerpt {
    color: var(--text-gray);
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.read-more-btn {
    background: transparent;
    border: 1px solid var(--primary-blue);
    color: var(--primary-blue);
    padding: 0.5rem 1rem;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s;
}

.read-more-btn:hover {
    background: var(--primary-blue);
    color: white;
}

.news-image {
    background: var(--bg-light);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.news-image svg {
    max-width: 100%;
    height: auto;
    opacity: 0.8;
}

.news-footer {
    margin-top: 1rem;
}

/* ===== 联系页面 ===== */
.contact-layout {
    display: grid;
    gap: 3rem;
}

.contact-info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.contact-card {
    background: white;
    border: 1px solid var(--border-light);
    border-radius: 12px;
    padding: 2rem;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s;
}

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

.contact-icon {
    width: 50px;
    height: 50px;
    margin: 0 auto 1rem;
    color: var(--primary-blue);
}

.contact-card h3 {
    font-size: 1.125rem;
    color: var(--text-dark);
    margin-bottom: 1rem;
    font-weight: 600;
}

.contact-card p {
    color: var(--text-gray);
    line-height: 1.7;
    margin-bottom: 0.5rem;
}

.postal-code {
    color: var(--text-light);
    font-size: 0.875rem;
}

/* ===== 联系表单 ===== */
.contact-form-section {
    background: white;
    border: 1px solid var(--border-light);
    border-radius: 12px;
    padding: 2rem;
    box-shadow: var(--shadow-sm);
}

.contact-form-section h2 {
    color: var(--text-dark);
    font-size: 1.75rem;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.form-description {
    color: var(--text-gray);
    margin-bottom: 2rem;
}

.contact-form {
    display: grid;
    gap: 1.5rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    color: var(--text-dark);
    font-weight: 500;
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
}

.required {
    color: #ef4444;
}

.form-group input,
.form-group select,
.form-group textarea {
    background: var(--bg-white);
    border: 1px solid var(--border-gray);
    color: var(--text-dark);
    padding: 0.75rem;
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-blue);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.checkbox-group label {
    flex-direction: row;
    align-items: center;
    cursor: pointer;
}

.checkbox-group input[type="checkbox"] {
    width: 18px;
    height: 18px;
    margin-right: 0.5rem;
    cursor: pointer;
}

.checkbox-group span {
    color: var(--text-gray);
    font-size: 0.95rem;
}

.checkbox-group a {
    color: var(--primary-blue);
    text-decoration: none;
}

.checkbox-group a:hover {
    text-decoration: underline;
}

.form-success {
    text-align: center;
    padding: 2rem;
}

.form-success svg {
    width: 60px;
    height: 60px;
    color: #10b981;
    margin-bottom: 1rem;
}

.form-success h3 {
    color: var(--text-dark);
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.form-success p {
    color: var(--text-gray);
}

/* ===== 地图和FAQ ===== */
.map-section {
    margin-top: 3rem;
}

.map-placeholder {
    background: white;
    border: 1px solid var(--border-light);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.map-note {
    text-align: center;
    padding: 1rem;
    color: var(--text-gray);
    background: var(--bg-light);
    font-size: 0.875rem;
}

.faq-section {
    margin-top: 3rem;
}

.faq-list {
    display: grid;
    gap: 1rem;
}

.faq-item {
    background: white;
    border: 1px solid var(--border-light);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem 1.5rem;
    cursor: pointer;
    color: var(--text-dark);
    font-size: 1.0625rem;
    font-weight: 500;
    margin: 0;
    transition: background 0.2s;
}

.faq-question:hover {
    background: var(--bg-gray);
}

.faq-question svg {
    width: 20px;
    height: 20px;
    transition: transform 0.3s;
}

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

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

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

.faq-answer p {
    padding: 0 1.5rem 1.25rem;
    color: var(--text-gray);
    line-height: 1.7;
    margin: 0;
}

/* ===== 页脚 ===== */
.footer {
    background: var(--text-dark);
    color: white;
    padding: 3rem 0 1.5rem;
    margin-top: 5rem;
}

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

.footer-section h3 {
    font-size: 1.125rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.footer-section p,
.footer-section li {
    color: #cbd5e1;
    line-height: 1.8;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li a {
    color: #cbd5e1;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-section ul li a:hover {
    color: white;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #475569;
    color: #94a3b8;
}

/* ===== 响应式设计 ===== */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 4px;
    cursor: pointer;
}

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

@media (max-width: 992px) {
    .achievements-layout {
        grid-template-columns: 1fr;
    }

    .detail-content {
        grid-template-columns: 1fr;
    }

    .filter-sidebar {
        position: static;
    }

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

    .timeline::before {
        left: 20px;
    }

    .timeline-item {
        justify-content: flex-start;
        padding-left: 50px;
    }

    .timeline-item:nth-child(even) {
        justify-content: flex-start;
    }

    .timeline-dot {
        left: 20px;
    }

    .timeline-content {
        width: 100%;
    }

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

    .news-image {
        min-height: 200px;
    }

    .about-content {
        grid-template-columns: 1fr;
    }

    .partners-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 1rem;
        border-top: 1px solid var(--border-light);
        box-shadow: var(--shadow-lg);
    }

    .nav-menu.active {
        display: flex;
    }

    .hamburger {
        display: flex;
    }

    .hero h1 {
        font-size: 2rem;
    }

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

    .hero-stats {
        grid-template-columns: 1fr;
    }

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

    .form-row {
        grid-template-columns: 1fr;
    }

    .about-content {
        grid-template-columns: 1fr;
    }

    .news-image {
        min-height: 180px;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 1.75rem;
    }

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

    .btn {
        width: 100%;
    }
}

/* ===== 滚动条样式 ===== */
::-webkit-scrollbar {
    width: 10px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--border-gray);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-light);
}

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

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

.feature-card,
.achievement-card,
.news-card {
    animation: fadeInUp 0.6s ease-out backwards;
}

.feature-card:nth-child(1), .achievement-card:nth-child(1) { animation-delay: 0.1s; }
.feature-card:nth-child(2), .achievement-card:nth-child(2) { animation-delay: 0.2s; }
.feature-card:nth-child(3), .achievement-card:nth-child(3) { animation-delay: 0.3s; }
.feature-card:nth-child(4), .achievement-card:nth-child(4) { animation-delay: 0.4s; }