@charset "utf-8";
/* ========== 全局重置 ========== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}
body {
    margin-right: auto;
    margin-left: auto;
    font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background-color: #f4f5f7;
    color: #1e293b;
    line-height: 1.6;
}
html {
    scroll-behavior: smooth;
}
/* ========== 导航栏 ========== */
nav {
    position: fixed;
    top: 0;
    width: 100%;
   background: linear-gradient(to right, #eaf4ff, #ffffff);
    backdrop-filter: blur(15px);
    border-bottom: 1px solid #e0e4e8;
    z-index: 9999;/* 最高层级 */
}
.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 64px;
    padding: 0 24px;
}
.logo {
    font-size: 1.6rem;
    font-weight: 700;
    color: #0066cc;
    letter-spacing: 1px;
	display: flex;
    align-items: center;
    gap: 1px;
}
.logo-tag {
    font-size: 0.85rem;       /* 精致小字 */
    font-weight: 600;         /* 半粗，清晰不飘 */
    color: #0066cc;           /* 创维蓝，与品牌统一 */
    letter-spacing: 0.03em;
    white-space: nowrap;
    background: rgba(0,102,204,0.06);  /* 极淡蓝底，增加层次 */
    padding: 4px 12px;
    border-radius: 20px;
}
.logo img {
    height: 80px;
    width: auto;
    display: block;
}
.nav-links {
    display: flex;
    gap: 36px;
    list-style: none;
}
.nav-links a {
    font-weight: 600;                    /* 加粗，更饱满 */
    font-size: 0.95rem;
    text-decoration: none;
    color: #0f172a;                      /* 深黑，不发虚 */
    transition: color 0.3s;
    letter-spacing: 0.02em;              /* 稍加字距，更精致 */
}
.nav-links a:hover {
    color: #0066cc;
}
/* 导航当前页高亮下划线 */
.nav-links a[href*="index"]::after,
.nav-links a:hover::after {
    content: '';
    display: block;
    width: 100%;
    height: 2px;
    background: #0066cc;
    margin-top: 4px;
    transition: width 0.3s;
}
/* ========== 下拉菜单 ========== */
.dropdown {
    position: relative;
}
.dropbtn {
    display: flex;
    align-items: center;
    gap: 4px;
    cursor: pointer;
    text-decoration: none;
    color: #1e293b;
    transition: color 0.2s;
}
.dropdown:hover .dropbtn {
    color: #0066cc;
}
/* 下拉面板 */
.dropdown-menu {
    position: absolute;
    top: calc(100% + 12px);
    left: 50%;
    transform: translateX(-50%);
    min-width: 200px;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border: 0.5px solid rgba(0,0,0,0.08);
    border-radius: 20px;
    padding: 12px 8px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.08), 0 0 0 1px rgba(0,0,0,0.02);
    opacity: 0;
    visibility: hidden;
    transition: all 0.35s cubic-bezier(0.23, 1, 0.32, 1);
    z-index: 1001;
    list-style: none;
    margin: 0;
}
/* 小三角 */
.dropdown-menu::before {
    content: '';
    position: absolute;
    top: -7px;
    left: 50%;
    transform: translateX(-50%) rotate(45deg);
    width: 14px;
    height: 14px;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px);
    border: 0.5px solid rgba(0,0,0,0.06);
    border-right: none;
    border-bottom: none;
    border-radius: 3px;
}
/* 菜单项 */
.dropdown-menu li a {
    display: flex;
    align-items: center;
    padding: 10px 18px;
    margin: 2px 4px;
    border-radius: 12px;
    color: #1e293b;
    font-size: 0.9rem;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.2s ease;
    white-space: nowrap;
}
.dropdown-menu li a:hover {
    background: #e6f0fa;
    color: #0066cc;
    transform: translateX(2px);
}
/* 悬停展开 */
.dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}
/* ========== Hero 区域（天空蓝渐变） ========== */
.hero-about {
    position: relative;
    width: 100%;
    height: 55vh;
    min-height: 400px;
    background: linear-gradient(135deg, #0066cc 0%, #0052a3 40%, #003d7a 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    margin-top: 64px;
    overflow: hidden;
}
.hero-about::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('imges/about-hero.jpg') center/cover no-repeat;
    opacity: 0.3;
    z-index: 0;
}
.hero-content {
    position: relative;
    z-index: 1;
    max-width: 700px;
    padding: 0 24px;
}
.hero-content h1 {
    font-size: 3rem;
    color: #fff;
    margin-bottom: 16px;
    letter-spacing: 0.05em;
    font-weight: 700;
}
.hero-content p {
    font-size: 1.2rem;
    color: rgba(255,255,255,0.85);
    letter-spacing: 0.04em;
    line-height: 1.6;
}
.hero-divider {
    width: 60px;
    height: 3px;
    background: #0066cc;
    margin: 20px auto;
    border-radius: 2px;
}
/* ========== 主体容器 ========== */
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
}
/* ========== 图文交错区块 ========== */
.section-block {
    display: flex;
    align-items: center;
    gap: 60px;
    padding: 80px 0;
}
.section-block.reverse {
    flex-direction: row-reverse;
}
.section-text {
    flex: 1;
}
.section-label {
    display: inline-block;
    background: #e6f0fa;
    color: #0066cc;
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    margin-bottom: 16px;
}
.section-text h2 {
    font-size: 2rem;
    color: #0f172a;
    margin-bottom: 20px;
    letter-spacing: 0.03em;
    line-height: 1.3;
}
.section-text p {
    color: #475569;
    font-size: 1rem;
    line-height: 1.9;
    margin-bottom: 14px;
}
.section-text strong {
    color: #0f172a;
}
.section-image {
    flex: 1;
}
.section-image img {
    width: 100%;
    border-radius: 20px;
    box-shadow: 0 8px 30px rgba(0,0,0,0.1);
    display: block;
    aspect-ratio: 4/3;
    object-fit: cover;
    background: #e0e4e8;
}
/* ========== 成就数据条 ========== */
.achievement-strip {
    background: #fff;
    border-radius: 20px;
    padding: 50px 40px;
    margin: 30px 0 80px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.04);
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    text-align: center;
}
.achievement-strip .num {
    font-size: 2.8rem;
    font-weight: 700;
    color: #0066cc;
    letter-spacing: 0.02em;
}
.achievement-strip .label {
    font-size: 0.9rem;
    color: #64748b;
    margin-top: 6px;
    font-weight: 500;
}
/* ========== 团队区域 ========== */
.team-section {
    padding: 0 0 80px;
}
.team-section .section-label {
    margin-bottom: 8px;
}
.team-section h2 {
    font-size: 2rem;
    color: #0f172a;
    margin-bottom: 40px;
    letter-spacing: 0.03em;
}
.team-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.team-card {
    text-align: center;
    transition: transform 0.3s;
}
/* 强制去除团队成员卡片链接的下划线 */
a.team-card,
a.team-card:link,
a.team-card:visited,
a.team-card:hover,
a.team-card:active {
    text-decoration: none !important;
    color: inherit;
}
a.team-card:hover h3 {
    color: #0066cc;
}
.team-card:hover {
    transform: translateY(-6px);
}
.team-photo {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    margin: 0 auto 16px;
    background: #e6f0fa;
    overflow: hidden;
    border: 3px solid #fff;
    box-shadow: 0 4px 16px rgba(0,0,0,0.08);
}
.team-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.team-card h3 {
    font-size: 1.1rem;
    color: #0f172a;
    margin-bottom: 4px;
}
.team-role {
    color: #0066cc;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 8px;
}
.team-desc {
    color: #64748b;
    font-size: 0.85rem;
    line-height: 1.6;
}
/* ========== 文化区块 ========== */
.culture-section {
    padding: 0 0 80px;
}
.culture-section h2 {
    font-size: 2rem;
    color: #0f172a;
    margin-bottom: 40px;
    letter-spacing: 0.03em;
}
.culture-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}
.culture-card {
    background: #fff;
    border-radius: 20px;
    padding: 40px 32px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.04);
    transition: all 0.3s;
    border: 1px solid #e0e4e8;
}
.culture-card:hover {
    border-color: #0066cc;
    box-shadow: 0 8px 24px rgba(0,102,204,0.08);
    transform: translateY(-3px);
}
.culture-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
}
.culture-card h3 {
    font-size: 1.2rem;
    color: #0f172a;
    margin-bottom: 10px;
}
.culture-card p {
    color: #64748b;
    font-size: 0.9rem;
    line-height: 1.7;
}
/* ========== 页脚 ========== */
footer {
    text-align: center;
    padding: 28px 0;
    border-top: 1px solid #e0e4e8;
    color: #94a3b8;
    font-size: 0.9rem;
}

/* ========== 响应式 ========== */
@media (max-width: 768px) {
    .section-block,
    .section-block.reverse {
        flex-direction: column;
        gap: 30px;
        padding: 50px 0;
    }
    .hero-content h1 {
        font-size: 2rem;
    }
    .achievement-strip {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
        padding: 30px 20px;
    }
    .team-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .culture-grid {
        grid-template-columns: 1fr;
    }
}
/* 标题用思源黑体 Heavy */
/* 标题用思源黑体 Heavy */
.hero-content h1 {
    font-family: 'Source Han Sans CN', '思源黑体', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    font-weight: 900;
}

/* 拼音样式 */
.hero-pinyin {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.7);
    letter-spacing: 0.2em;
    margin-top: -8px;
    margin-bottom: 8px;
    font-family: inherit;
    font-weight: 400;
    text-transform: lowercase;
}
.nav-links a {
    text-decoration: none !important;
}
.nav-links a::after {
    display: none !important;   /* 移除之前的高亮下划线 */
}