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

:root {
    /* 极简配色方案 */
    --primary-color: #2c3e50;
    --secondary-color: #34495e;
    --accent-color: #3498db;
    --text-dark: #2c3e50;
    --text-medium: #555;
    --text-light: #7f8c8d;
    --bg-white: #ffffff;
    --bg-light: #f8f9fa;
    --border-color: #e1e4e8;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Microsoft YaHei', Arial, sans-serif;
    line-height: 1.8;
    color: var(--text-dark);
    background-color: var(--bg-white);
    font-size: 16px;
}

.container {
    max-width: 95%;
    margin: 0 auto;
    padding: 0 30px;
}

/* 主内容区左右布局 */
.main-content-section {
    padding: 60px 0;
}

.main-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: start;
}

/* 左侧导师栏 */
.leader-column {
    position: sticky;
    top: 100px;
}

.about-content-vertical {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 30px;
    align-items: center;
}

.about-image {
    width: 100%;
}

.about-image img {
    width: 100%;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

.about-text-compact h2 {
    font-size: 2.2rem;
    color: var(--text-dark);
    margin: 0 0 15px 0;
    font-weight: 800;
    line-height: 1.5;
}

.about-text-compact .position {
    color: var(--accent-color);
    font-size: 1.1rem;
    margin-bottom: 15px;
    font-weight: 700;
    line-height: 1.8;
}

.about-text-compact .affiliation {
    color: var(--text-dark);
    font-size: 1rem;
    margin-bottom: 15px;
    font-weight: 700;
    line-height: 1.9;
}

.honors-text {
    margin: 0;
}

.honors-text p {
    color: var(--text-dark);
    font-size: 0.95rem;
    line-height: 2;
    font-weight: 600;
    margin: 0;
}

/* 响应式：小屏幕改为上下布局 */
@media (max-width: 768px) {
    .about-content-vertical {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .about-image {
        max-width: 200px;
        margin: 0 auto;
    }
}

/* 学术兼职横跨整个宽度 */
.academic-positions-full {
    margin-top: 30px;
}

.positions-title-full {
    font-size: 1.3rem;
    color: var(--text-dark);
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--accent-color);
    font-weight: 600;
}

.positions-grid-full {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.position-item-full {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 15px;
    background: var(--bg-light);
    border-radius: 6px;
    border-left: 3px solid var(--accent-color);
    transition: all 0.3s ease;
}

.position-item-full:hover {
    background: #f0f4ff;
    transform: translateX(3px);
}

.position-item-full .position-icon {
    font-size: 1.1rem;
    flex-shrink: 0;
}

.position-item-full .position-text {
    font-size: 0.88rem;
    color: var(--text-dark);
    line-height: 1.4;
}

/* 响应式：小屏幕改为单列 */
@media (max-width: 768px) {
    .positions-grid-full {
        grid-template-columns: 1fr;
    }
}

/* 紧凑版学术兼职 */
.academic-positions-compact {
    margin-top: 25px;
}

.positions-title-compact {
    font-size: 1.2rem;
    color: var(--text-dark);
    margin-bottom: 15px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--accent-color);
}

.positions-list-compact {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
}

.position-item-compact {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    background: var(--bg-light);
    border-radius: 6px;
    border-left: 3px solid var(--accent-color);
    transition: all 0.3s ease;
}

.position-item-compact:hover {
    background: #f0f4ff;
    transform: translateX(3px);
}

.position-item-compact .position-icon {
    font-size: 1.1rem;
    flex-shrink: 0;
}

.position-item-compact .position-text {
    font-size: 0.86rem;
    color: var(--text-dark);
    line-height: 1.4;
}

/* 响应式：小屏幕改为单列 */
@media (max-width: 768px) {
    .positions-list-compact {
        grid-template-columns: 1fr;
    }
}

/* 右侧新闻栏 */
.news-column {
}

.news-grid-vertical {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* 响应式：小屏幕改为上下布局 */
@media (max-width: 1024px) {
    .main-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .leader-column {
        position: static;
    }
}

/* 学术兼职样式 */
.academic-positions {
    margin-top: 30px;
}

.positions-title {
    font-size: 1.3rem;
    color: var(--text-dark);
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--accent-color);
}

.positions-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
}

.position-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 15px;
    background: var(--bg-light);
    border-radius: 8px;
    border-left: 3px solid var(--accent-color);
    transition: all 0.3s ease;
}

.position-item:hover {
    background: #f0f4ff;
    transform: translateX(5px);
    box-shadow: 0 2px 8px rgba(102, 126, 234, 0.15);
}

.position-icon {
    font-size: 1.3rem;
    flex-shrink: 0;
}

.position-text {
    font-size: 0.92rem;
    color: var(--text-dark);
    line-height: 1.5;
}

/* 响应式：小屏幕改为单列 */
@media (max-width: 768px) {
    .positions-grid {
        grid-template-columns: 1fr;
    }
}

/* 导航栏 - 简洁风格 */
.navbar {
    background: var(--bg-white);
    border-bottom: 1px solid var(--border-color);
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar .container {
    display: flex;
    justify-content: center;
    align-items: center;
}

.nav-menu-centered {
    display: flex;
    list-style: none;
    gap: 2.5rem;
    margin: 0;
    padding: 0;
}

.nav-menu-centered a {
    text-decoration: none;
    color: var(--text-medium);
    font-weight: 500;
    font-size: 1rem;
    transition: color 0.2s ease;
    padding: 5px 0;
}

.nav-menu-centered a:hover,
.nav-menu-centered a.active {
    color: var(--accent-color);
}

.hamburger {
    display: none;
}

/* 响应式导航 */
@media (max-width: 768px) {
    .nav-menu-centered {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}

/* 简洁页脚 */
.footer-minimal {
    background: var(--bg-light);
    border-top: 1px solid var(--border-color);
    padding: 30px 0;
    margin-top: 60px;
}

.footer-content-minimal {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
}

.footer-minimal .copyright {
    color: var(--text-light);
    font-size: 0.9rem;
    margin: 0;
}

.footer-links {
    display: flex;
    align-items: center;
    gap: 15px;
}

.footer-links a {
    color: var(--text-medium);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

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

.footer-links span {
    color: var(--border-color);
}

/* 响应式页脚 */
@media (max-width: 768px) {
    .footer-content-minimal {
        gap: 10px;
    }
    
    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
        gap: 10px;
    }
}

/* 页头区域 - 极简风格 */
.header-banner {
    background: var(--bg-white);
    padding: 60px 0 40px;
    border-bottom: 1px solid var(--border-color);
}

.banner-content h1 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.banner-subtitle {
    font-size: 1rem;
    color: var(--text-light);
    margin-bottom: 5px;
}

.banner-tagline {
    font-size: 0.95rem;
    color: var(--text-light);
    font-style: italic;
}

/* 通用区块样式 */
.section {
    padding: 60px 0;
}

.section-header {
    margin-bottom: 40px;
}

.section-header h2 {
    font-size: 1.8rem;
    color: var(--primary-color);
    margin-bottom: 10px;
    font-weight: 700;
}

.section-divider {
    display: none;
}

.section-subtitle {
    color: var(--text-light);
    font-size: 1rem;
    max-width: 100%;
}

/* 关于导师区块 */
.about-section {
    background: var(--bg-white);
    border-bottom: 1px solid var(--border-color);
}

.about-content {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 40px;
    align-items: start;
}

.about-image img {
    width: 100%;
    border-radius: 8px;
}

.about-text h3 {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 8px;
    font-weight: 700;
}

.position {
    font-size: 0.95rem;
    color: var(--text-medium);
    margin-bottom: 5px;
}

.affiliation {
    font-size: 0.9rem;
    color: var(--text-light);
    margin-bottom: 30px;
}

.about-details {
    margin: 30px 0;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
}

.about-details > div {
    background: transparent;
    padding: 0;
    border: none;
}

.about-details h4 {
    color: var(--primary-color);
    font-size: 1rem;
    margin-bottom: 12px;
    font-weight: 600;
}

.about-details ul {
    list-style: none;
    padding-left: 0;
}

.about-details li {
    padding: 6px 0;
    padding-left: 18px;
    position: relative;
    color: var(--text-medium);
    line-height: 1.6;
    font-size: 0.95rem;
}

.about-details li:before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--text-light);
}

.mt-3 {
    margin-top: 1.5rem;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 10px 24px;
    font-size: 0.9rem;
    font-weight: 500;
    text-decoration: none;
    border-radius: 4px;
    transition: all 0.2s ease;
    border: 1px solid var(--border-color);
}

.btn-outline {
    color: var(--accent-color);
    border-color: var(--accent-color);
    background: transparent;
}

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

/* 研究领域 - 简洁卡片 */
.research-highlights {
    background: var(--bg-light);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.highlights-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.highlight-card {
    background: var(--bg-white);
    padding: 30px 20px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    transition: all 0.2s ease;
}

.highlight-card:hover {
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
    transform: translateY(-2px);
}

.highlight-icon {
    display: none;
}

.highlight-card h3 {
    font-size: 1.1rem;
    color: var(--primary-color);
    margin-bottom: 12px;
    font-weight: 600;
}

.highlight-card p {
    color: var(--text-medium);
    font-size: 0.9rem;
    line-height: 1.6;
}

/* 最新动态 - 类似 Publications 风格 */
.news-section {
    background: var(--bg-white);
}

.news-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

.news-card {
    background: var(--bg-white);
    padding: 25px 0;
    border-radius: 0;
    border-left: none;
    border-bottom: 1px solid var(--border-color);
    box-shadow: none;
    transition: all 0.2s ease;
}

.news-card:hover {
    background: var(--bg-light);
    box-shadow: none;
    transform: none;
    padding-left: 15px;
}

.news-date {
    color: var(--text-light);
    font-size: 0.85rem;
    margin-bottom: 8px;
    font-weight: 400;
}

.news-card h3 {
    font-size: 1.1rem;
    color: var(--primary-color);
    margin-bottom: 10px;
    font-weight: 600;
}

.news-card p {
    color: var(--text-medium);
    font-size: 0.95rem;
    line-height: 1.7;
    margin-bottom: 10px;
}

.news-link {
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    transition: color 0.2s ease;
}

.news-link:hover {
    color: var(--primary-color);
}

/* 带图片的新闻卡片 */
.news-card-with-image {
    display: flex;
    flex-direction: column;
}

.news-image {
    width: 100%;
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: 15px 0;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.news-card-with-image:hover .news-image {
    transform: scale(1.02);
}

/* 统计数据 - 简化 */
.stats-section {
    background: var(--bg-light);
    padding: 40px 0;
    border-top: 1px solid var(--border-color);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    text-align: left;
}

.stat-item {
    padding: 0;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 5px;
    color: var(--primary-color);
}

.stat-label {
    font-size: 0.95rem;
    color: var(--text-medium);
}

/* 页脚 - 极简 */
.footer {
    background: var(--bg-white);
    color: var(--text-medium);
    padding: 40px 0 30px;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    margin-bottom: 30px;
}

.footer-section h3 {
    color: var(--primary-color);
    font-size: 1.1rem;
    margin-bottom: 15px;
    font-weight: 600;
}

.footer-section h4 {
    color: var(--primary-color);
    font-size: 1rem;
    margin-bottom: 12px;
    font-weight: 600;
}

.footer-section p,
.footer-section li {
    color: var(--text-medium);
    font-size: 0.9rem;
    margin-bottom: 8px;
    line-height: 1.6;
}

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

.footer-section ul li a {
    color: var(--text-medium);
    text-decoration: none;
    transition: color 0.2s ease;
}

.footer-section ul li a:hover {
    color: var(--accent-color);
}

.footer-section i {
    margin-right: 8px;
    color: var(--text-light);
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
    color: var(--text-light);
    font-size: 0.85rem;
}

/* 响应式设计 */
@media (max-width: 968px) {
    .highlights-grid,
    .stats-grid,
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .about-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .about-image {
        max-width: 200px;
        margin: 0 auto;
    }
    
    .about-details {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .hamburger {
        display: flex;
        flex-direction: column;
        cursor: pointer;
        gap: 4px;
    }
    
    .hamburger span {
        width: 25px;
        height: 2px;
        background: var(--text-dark);
        transition: all 0.3s ease;
    }
    
    .banner-content h1 {
        font-size: 2rem;
    }
    
    .section-header h2 {
        font-size: 1.5rem;
    }
    
    .highlights-grid,
    .stats-grid,
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .container {
        padding: 0 20px;
    }
}
/* 2026 visual refinement and accessibility layer */
:root { --primary-color:#123f46; --secondary-color:#1c5960; --accent-color:#c58b3a; --text-dark:#17333a; --text-medium:#4f6469; --text-light:#71858a; --bg-light:#f4f8f8; --border-color:#dce8e8; }
html { scroll-behavior:smooth; }
body { background:linear-gradient(180deg,#f8fbfb 0,#fff 260px); color:var(--text-dark); }
.container { width:min(1180px,calc(100% - 32px)); max-width:1180px; padding-left:16px; padding-right:16px; }
.navbar { position:sticky; top:0; z-index:100; background:rgba(255,255,255,.94); border-bottom:1px solid rgba(220,232,232,.9); box-shadow:0 6px 24px rgba(18,63,70,.07); backdrop-filter:blur(12px); }
.navbar .container { min-height:68px; }
.nav-menu-centered a { color:var(--text-medium); font-weight:600; letter-spacing:.01em; }
.nav-menu-centered a:hover,.nav-menu-centered a.active { color:var(--primary-color); }
.nav-menu-centered a::after { background:var(--accent-color); height:2px; }
.section { padding-top:76px; padding-bottom:76px; }
.section:nth-of-type(even) { background:var(--bg-light); }
.section-header { margin-bottom:34px; }
.section-header h2 { color:var(--primary-color); font-weight:750; letter-spacing:-.02em; }
.section-header h2::after { background:var(--accent-color); }
.about-content,.highlight-card,.news-card,.position-item,.stat-item { border:1px solid var(--border-color); border-radius:16px; }
.about-content { background:rgba(255,255,255,.82); box-shadow:0 16px 40px rgba(18,63,70,.08); }
.highlight-card,.news-card,.position-item,.stat-item { background:#fff; box-shadow:0 8px 24px rgba(18,63,70,.06); transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease; }
.highlight-card:hover,.news-card:hover,.position-item:hover,.stat-item:hover { transform:translateY(-4px); border-color:#b7d2d1; box-shadow:0 16px 32px rgba(18,63,70,.12); }
.news-card h3 { color:var(--primary-color); }
.news-date { color:var(--accent-color); font-weight:700; }
.footer,.footer-minimal { background:#123f46; color:#e7f2f2; }
.footer-section h3,.footer-section h4 { color:#fff; }
.footer-section p,.footer-section li,.footer-section ul li a { color:#c7dada; }
.footer-section ul li a:hover { color:#f0c477; }
.footer-bottom { border-color:rgba(255,255,255,.18); color:#a9c1c3; }
.hamburger { border:0; background:transparent; padding:8px; }
.hamburger:focus-visible,a:focus-visible,button:focus-visible { outline:3px solid rgba(197,139,58,.55); outline-offset:3px; }
img { max-width:100%; height:auto; }
@media (max-width:768px) {
 .container { width:calc(100% - 16px); padding:0 8px; }
 .section { padding-top:54px; padding-bottom:54px; }
 .navbar .container { min-height:60px; }
 .nav-menu.active { display:flex; position:absolute; top:60px; left:8px; right:8px; flex-direction:column; gap:0; padding:8px; border:1px solid var(--border-color); border-radius:12px; background:#fff; box-shadow:0 14px 30px rgba(18,63,70,.14); }
 .nav-menu.active a { padding:11px 14px; border-radius:8px; }
 .nav-menu.active a:hover { background:var(--bg-light); }
 .hamburger { display:flex; }
}
@media (prefers-reduced-motion:reduce) { *,*::before,*::after { scroll-behavior:auto!important; animation-duration:.01ms!important; transition-duration:.01ms!important; } }
/* Homepage structure refinement */
.main-content-section { padding: 72px 0 88px; }
.main-grid { grid-template-columns: minmax(0, 1.25fr) minmax(320px, .75fr); gap: 56px; align-items: start; }
.leader-column { position: static; min-width: 0; }
.about-content-vertical { grid-template-columns: 180px minmax(0, 1fr); gap: 28px; padding: 28px; background: #fff; border: 1px solid var(--border-color); border-radius: 18px; box-shadow: 0 14px 36px rgba(18,63,70,.08); align-items: start; }
.about-image img { aspect-ratio: 3 / 4; object-fit: cover; }
.about-text-compact h2 { font-size: clamp(2rem, 4vw, 2.7rem); letter-spacing: -.04em; }
.about-text-compact .position { font-size: 1rem; }
.about-text-compact .affiliation { font-size: .96rem; line-height: 1.7; }
.honors-text p { font-size: .92rem; line-height: 1.8; font-weight: 400; color: var(--text-medium); }
.academic-positions-full { margin-top: 34px; }
.positions-title-full { font-size: 1.45rem; margin-bottom: 18px; padding-bottom: 12px; }
.positions-grid-full { gap: 12px; }
.position-item-full { min-height: 52px; padding: 13px 16px; border: 1px solid var(--border-color); border-left: 3px solid var(--accent-color); border-radius: 10px; background: #fff; }
.position-item-full .position-text { font-size: .9rem; }
.news-column { min-width: 0; position: sticky; top: 94px; }
.news-column .section-header { display: flex; align-items: end; justify-content: space-between; margin-bottom: 20px; padding-bottom: 14px; border-bottom: 2px solid var(--accent-color); }
.news-column .section-header h2 { margin: 0; font-size: 1.55rem; }
.news-grid-vertical { display: grid; gap: 14px; }
.news-grid-vertical .news-card { padding: 20px 22px; border: 1px solid var(--border-color); border-radius: 14px; background: #fff; box-shadow: 0 8px 22px rgba(18,63,70,.06); }
.news-grid-vertical .news-card:hover { padding-left: 22px; transform: translateY(-3px); background: #fff; box-shadow: 0 14px 28px rgba(18,63,70,.11); }
.news-card h3 { font-size: 1rem; line-height: 1.65; }
.news-link { display: inline-flex; margin-top: 4px; }
@media (max-width: 900px) {
 .main-grid { grid-template-columns: 1fr; gap: 42px; }
 .news-column { position: static; }
}
@media (max-width: 600px) {
 .main-content-section { padding: 42px 0 58px; }
 .about-content-vertical { grid-template-columns: 1fr; padding: 20px; }
 .about-image { max-width: 180px; }
 .about-text-compact { text-align: left; }
 .positions-grid-full { grid-template-columns: 1fr; }
 .news-grid-vertical .news-card { padding: 18px; }
}
/* Premium editorial homepage skin */
body { background:#f5f7f6; color:#183238; }
.navbar { background:rgba(245,247,246,.88); border-bottom:1px solid rgba(24,50,56,.10); box-shadow:none; }
.navbar .container { justify-content:space-between; }
.navbar .container::before { content:'HYDRATE / LOW-CARBON ENERGY'; color:#183238; font-size:.72rem; font-weight:800; letter-spacing:.16em; white-space:nowrap; }
.nav-menu-centered { gap:2rem; }
.nav-menu-centered a { font-size:.86rem; letter-spacing:.02em; }
.main-content-section { position:relative; overflow:hidden; padding:92px 0 110px; background:radial-gradient(circle at 82% 8%,rgba(207,165,91,.18),transparent 25%),linear-gradient(135deg,#f5f7f6 0%,#eef4f2 100%); }
.main-content-section::before { content:''; position:absolute; inset:0; pointer-events:none; opacity:.22; background-image:linear-gradient(rgba(24,50,56,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(24,50,56,.07) 1px,transparent 1px); background-size:56px 56px; mask-image:linear-gradient(90deg,#000,transparent 75%); }
.main-content-section > .container { position:relative; }
.main-grid { grid-template-columns:minmax(0,1.15fr) minmax(360px,.85fr); gap:72px; }
.about-content-vertical { position:relative; grid-template-columns:210px minmax(0,1fr); padding:34px; border:1px solid rgba(24,50,56,.12); border-radius:4px 26px 4px 26px; background:rgba(255,255,255,.76); box-shadow:22px 24px 0 rgba(24,50,56,.06),0 22px 60px rgba(24,50,56,.12); backdrop-filter:blur(10px); }
.about-content-vertical::before { content:'01 / PROFILE'; position:absolute; top:17px; right:26px; color:#c39855; font-size:.62rem; font-weight:800; letter-spacing:.18em; }
.about-image img { border-radius:2px 18px 2px 18px; filter:saturate(.88) contrast(1.03); box-shadow:10px 10px 0 #d8e1de; }
.about-text-compact h2 { margin-top:8px; color:#183238; font-size:clamp(2.6rem,5vw,4.4rem); line-height:1; font-weight:800; letter-spacing:-.08em; }
.about-text-compact .position { margin-top:18px; color:#bb8741; font-size:1rem; letter-spacing:.04em; }
.about-text-compact .affiliation { color:#28474d; font-size:1rem; line-height:1.8; }
.honors-text { border-top:1px solid rgba(24,50,56,.14); padding-top:16px; }
.honors-text p { color:#60757a; font-size:.9rem; font-weight:400; line-height:1.9; }
.academic-positions-full { margin-top:52px; }
.positions-title-full { display:flex; align-items:center; gap:15px; border-bottom:0; color:#183238; font-size:1.1rem; letter-spacing:.08em; text-transform:uppercase; }
.positions-title-full::after { content:''; height:1px; flex:1; background:linear-gradient(90deg,#c39855,transparent); }
.positions-grid-full { gap:10px; }
.position-item-full { min-height:54px; border:1px solid rgba(24,50,56,.10); border-left:2px solid #c39855; border-radius:2px 10px 2px 10px; background:rgba(255,255,255,.64); transition:transform .25s ease,background .25s ease; }
.position-item-full:hover { transform:translateX(6px); background:#fff; }
.position-item-full .position-text { color:#486168; font-size:.84rem; }
.news-column { padding-top:8px; }
.news-column .section-header { border:0; margin-bottom:28px; padding:0; display:block; }
.news-column .section-header h2 { color:#183238; font-size:2.2rem; letter-spacing:-.06em; }
.news-column .section-header h2::before { content:'02 / UPDATES'; display:block; margin-bottom:13px; color:#c39855; font-size:.62rem; letter-spacing:.2em; }
.news-grid-vertical { gap:0; border-top:1px solid rgba(24,50,56,.16); }
.news-grid-vertical .news-card { position:relative; padding:23px 0 25px 34px; border:0; border-bottom:1px solid rgba(24,50,56,.16); border-radius:0; background:transparent; box-shadow:none; }
.news-grid-vertical .news-card::before { content:''; position:absolute; top:30px; left:0; width:8px; height:8px; border:2px solid #c39855; border-radius:50%; background:#f5f7f6; }
.news-grid-vertical .news-card:hover { padding-left:42px; transform:none; background:transparent; box-shadow:none; }
.news-date { color:#c39855; font-size:.72rem; letter-spacing:.15em; }
.news-card h3 { max-width:430px; margin:9px 0 13px; color:#28474d; font-size:1.05rem; line-height:1.7; }
.news-link { color:#183238; font-size:.78rem; letter-spacing:.05em; }
.footer-minimal { margin-top:0; padding:38px 0; background:#183238; border:0; }
.footer-minimal .copyright,.footer-links a { color:#c8d6d3; }
.footer-links span { color:#617b7d; }
@media (max-width:900px) { .navbar .container::before { content:'HYDRATE LAB'; } .main-grid { gap:54px; } }
@media (max-width:768px) { .navbar .container::before { font-size:.62rem; } .nav-menu-centered { gap:1rem; } .main-content-section { padding:58px 0 72px; } .about-content-vertical { grid-template-columns:1fr; padding:25px; } .about-image { max-width:190px; } .about-text-compact h2 { font-size:3.2rem; } .news-column .section-header h2 { font-size:1.9rem; } }
/* Wide desktop composition */
@media (min-width: 1100px) {
    .container { width: calc(100% - 96px); max-width: 1600px; }
    .main-content-section > .container { max-width: 1540px; }
    .main-grid { grid-template-columns: minmax(0, 1.28fr) minmax(420px, .72fr); gap: 86px; }
    .about-content-vertical { grid-template-columns: 230px minmax(0, 1fr); padding: 40px; }
    .positions-grid-full { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .news-column { padding-left: 8px; }
    .news-card h3 { max-width: 560px; }
}
@media (min-width: 1600px) {
    .container { width: calc(100% - 140px); max-width: 1720px; }
    .main-content-section > .container { max-width: 1660px; }
}
/* Research-brand homepage */
.home-hero { position:relative; overflow:hidden; min-height:690px; display:flex; align-items:center; color:#f5fbfa; background:radial-gradient(circle at 72% 38%,rgba(47,169,166,.18),transparent 24%),radial-gradient(circle at 88% 12%,rgba(205,158,82,.15),transparent 22%),linear-gradient(125deg,#0b252c 0%,#103a42 52%,#0a2a32 100%); }
.home-hero::after { content:''; position:absolute; inset:0; pointer-events:none; opacity:.12; background-image:linear-gradient(rgba(255,255,255,.15) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.15) 1px,transparent 1px); background-size:64px 64px; mask-image:linear-gradient(90deg,transparent,#000); }
.hero-layout { position:relative; z-index:1; display:grid; grid-template-columns:minmax(0,1.05fr) minmax(480px,.95fr); gap:70px; align-items:center; padding-top:80px; padding-bottom:80px; }
.eyebrow { margin:0 0 22px; color:#d6ac69; font-size:.72rem; font-weight:800; letter-spacing:.2em; }
.hero-copy h1 { max-width:890px; margin:0; color:#fff; font-size:clamp(3.5rem,5.7vw,6.8rem); line-height:1.03; letter-spacing:-.075em; font-weight:780; }
.hero-copy h1 span { color:#8ed2cc; }
.hero-lead { max-width:720px; margin:30px 0 0; color:#bcd0d0; font-size:1.08rem; line-height:1.9; }
.hero-actions { display:flex; gap:14px; margin-top:36px; }
.hero-button { display:inline-flex; align-items:center; justify-content:center; min-height:48px; padding:0 23px; border:1px solid rgba(255,255,255,.24); text-decoration:none; font-size:.88rem; font-weight:700; transition:.25s ease; }
.hero-button.primary { color:#102f36; background:#d6ac69; border-color:#d6ac69; }
.hero-button.secondary { color:#e9f3f1; background:transparent; }
.hero-button:hover { transform:translateY(-3px); box-shadow:0 12px 30px rgba(0,0,0,.18); }
.hero-facts { display:flex; gap:42px; margin-top:56px; }
.hero-facts div { display:flex; flex-direction:column; gap:2px; }
.hero-facts strong { color:#fff; font-size:1.28rem; letter-spacing:-.03em; }
.hero-facts span { color:#8eaaaa; font-size:.72rem; letter-spacing:.06em; }
.hydrate-visual { position:relative; width:min(520px,38vw); aspect-ratio:1; justify-self:end; border-radius:50%; background:radial-gradient(circle,rgba(119,209,199,.12),transparent 62%); }
.visual-core { position:absolute; inset:34%; z-index:3; display:flex; flex-direction:column; align-items:center; justify-content:center; border:1px solid rgba(151,223,215,.46); border-radius:50%; background:rgba(10,40,47,.72); box-shadow:0 0 70px rgba(103,220,207,.18),inset 0 0 28px rgba(142,210,204,.12); backdrop-filter:blur(8px); }
.visual-core small { color:#d6ac69; font-size:.58rem; letter-spacing:.34em; }
.visual-core strong { color:#fff; font-size:clamp(.9rem,1.5vw,1.35rem); letter-spacing:.13em; }
.visual-core span { margin-top:5px; color:#7ea6a5; font-size:.42rem; letter-spacing:.16em; }
.visual-orbit { position:absolute; inset:13%; border:1px solid rgba(142,210,204,.25); border-radius:50%; animation:orbit-spin 24s linear infinite; }
.visual-orbit.orbit-two { inset:23%; border-style:dashed; animation-duration:17s; animation-direction:reverse; }
.visual-orbit i { position:absolute; width:12px; height:12px; border:2px solid #8ed2cc; border-radius:50%; background:#113a42; box-shadow:0 0 16px #62bbb3; }
.visual-orbit i:nth-child(1) { top:-6px; left:50%; }.visual-orbit i:nth-child(2) { right:5%; bottom:22%; }.visual-orbit i:nth-child(3) { left:8%; bottom:18%; }
.molecule { position:absolute; z-index:4; padding:7px 10px; border:1px solid rgba(255,255,255,.16); border-radius:20px; color:#c7dfdc; background:rgba(13,47,54,.66); font-size:.72rem; letter-spacing:.06em; backdrop-filter:blur(6px); }
.molecule-co2 { top:17%; right:11%; }.molecule-ch4 { left:4%; bottom:23%; }.molecule-h2 { right:2%; bottom:17%; }
@keyframes orbit-spin { to { transform:rotate(360deg); } }
.research-atlas { padding:110px 0 120px; background:#eef2f0; }
.atlas-heading { display:grid; grid-template-columns:minmax(0,1fr) minmax(320px,.55fr); gap:70px; align-items:end; margin-bottom:54px; }
.atlas-heading h2 { max-width:800px; margin:0; color:#14343b; font-size:clamp(2.4rem,4vw,4.5rem); line-height:1.1; letter-spacing:-.065em; }
.atlas-heading > p { margin:0; color:#647a7e; font-size:.95rem; line-height:1.9; }
.atlas-grid { display:grid; grid-template-columns:repeat(6,minmax(0,1fr)); gap:18px; }
.atlas-card { position:relative; grid-column:span 2; min-height:410px; display:flex; flex-direction:column; padding:32px; overflow:hidden; color:#17373e; text-decoration:none; border:1px solid rgba(20,52,59,.12); background:rgba(255,255,255,.62); transition:transform .28s ease,box-shadow .28s ease,background .28s ease; }
.atlas-card.wide { grid-column:span 3; min-height:350px; }
.atlas-card.wide .atlas-symbol { margin-top:38px; margin-bottom:28px; }
.atlas-card.featured { color:#edf8f6; background:#143a42; transform:translateY(-22px); }
.atlas-card:hover { transform:translateY(-9px); background:#fff; box-shadow:0 24px 55px rgba(20,52,59,.13); }
.atlas-card.featured:hover { transform:translateY(-30px); background:#12363d; }
.atlas-number { color:#bd8e4c; font-size:.72rem; font-weight:800; letter-spacing:.18em; }
.atlas-symbol { width:76px; height:76px; display:grid; place-items:center; margin:54px 0 34px; border:1px solid rgba(20,52,59,.18); border-radius:50%; color:#1a6469; font-weight:800; }
.featured .atlas-symbol { border-color:rgba(255,255,255,.25); color:#8ed2cc; }
.atlas-card h3 { max-width:360px; margin:0 0 16px; font-size:1.28rem; line-height:1.55; }
.atlas-card p { margin:0; color:#647a7e; font-size:.88rem; line-height:1.85; }
.featured p { color:#aac1c0; }
.atlas-link { margin-top:auto; padding-top:30px; color:#ad7b39; font-size:.78rem; font-weight:800; letter-spacing:.08em; }
.featured .atlas-link { color:#d6ac69; }
.atlas-link b { margin-left:8px; font-size:1rem; }
.section-anchor { display:block; position:relative; top:-90px; visibility:hidden; }
@media (max-width:1000px) { .hero-layout { grid-template-columns:1fr; }.hydrate-visual { position:absolute; right:-130px; opacity:.38; }.hero-copy { position:relative; z-index:2; }.atlas-grid { grid-template-columns:1fr; }.atlas-card,.atlas-card.wide,.atlas-card.featured { grid-column:auto; min-height:300px; transform:none; }.atlas-heading { grid-template-columns:1fr; gap:25px; } }
@media (max-width:700px) { .home-hero { min-height:auto; }.hero-layout { padding-top:70px; padding-bottom:70px; }.hero-copy h1 { font-size:3.15rem; }.hero-lead { font-size:.96rem; }.hero-actions { flex-direction:column; align-items:stretch; }.hero-facts { flex-wrap:wrap; gap:22px 34px; }.hydrate-visual { display:none; }.research-atlas { padding:72px 0; }.atlas-heading h2 { font-size:2.5rem; }.atlas-card { min-height:330px; padding:26px; }.atlas-symbol { margin:34px 0 26px; } }
@media (prefers-reduced-motion:reduce) { .visual-orbit { animation:none; } }
/* Chinese academic typography correction */
body { font-family:"Inter","PingFang SC","Microsoft YaHei","Noto Sans CJK SC",Arial,sans-serif; font-size:16px; line-height:1.7; }
.navbar .container::before { font-size:.68rem; letter-spacing:.12em; }
.nav-menu-centered a { font-size:.9rem; line-height:1.4; }
.home-hero { min-height:620px; }
.hero-layout { grid-template-columns:minmax(0,1.12fr) minmax(420px,.88fr); gap:64px; padding-top:72px; padding-bottom:72px; }
.eyebrow { margin-bottom:18px; font-size:.68rem; letter-spacing:.15em; line-height:1.5; }
.hero-copy { max-width:900px; }
.hero-copy h1 { max-width:900px; font-size:clamp(3rem,4.25vw,5.25rem); line-height:1.12; letter-spacing:-.045em; font-weight:720; text-wrap:balance; }
.hero-copy h1 span { display:inline; }
.hero-lead { max-width:760px; margin-top:26px; font-size:1.04rem; line-height:1.85; letter-spacing:.01em; text-align:justify; text-justify:inter-ideograph; }
.hero-button { min-height:46px; padding:0 22px; font-size:.86rem; letter-spacing:.02em; }
.hero-facts { gap:48px; margin-top:46px; }
.hero-facts strong { font-size:1.18rem; font-weight:700; }
.hero-facts span { font-size:.74rem; letter-spacing:.03em; }
.visual-core strong { font-size:1.05rem; letter-spacing:.1em; }
.main-content-section { padding:88px 0 100px; }
.main-content-section > .container { max-width:1500px; }
.main-grid { grid-template-columns:minmax(0,1.08fr) minmax(420px,.92fr); gap:72px; }
.about-content-vertical { grid-template-columns:210px minmax(0,1fr); padding:36px; }
.about-text-compact h2 { font-size:clamp(2.5rem,3.2vw,3.5rem); line-height:1.1; letter-spacing:-.045em; }
.about-text-compact .position { margin-top:14px; font-size:1rem; line-height:1.65; }
.about-text-compact .affiliation { font-size:.96rem; line-height:1.75; }
.honors-text p { font-size:.92rem; line-height:1.85; text-align:justify; text-justify:inter-ideograph; }
.positions-title-full { font-size:1.12rem; letter-spacing:.04em; }
.position-item-full .position-text { font-size:.88rem; line-height:1.6; }
.news-column .section-header h2 { font-size:2rem; line-height:1.2; letter-spacing:-.035em; }
.news-card h3 { font-size:1rem; line-height:1.65; font-weight:650; }
.research-atlas { padding:96px 0 108px; }
.atlas-heading { grid-template-columns:minmax(0,1fr) minmax(320px,.5fr); gap:64px; margin-bottom:48px; }
.atlas-heading h2 { max-width:760px; font-size:clamp(2.35rem,3.3vw,3.8rem); line-height:1.16; letter-spacing:-.045em; }
.atlas-heading > p { font-size:.94rem; line-height:1.9; text-align:justify; text-justify:inter-ideograph; }
.atlas-card { min-height:380px; padding:30px; }
.atlas-card h3 { font-size:1.2rem; line-height:1.6; letter-spacing:-.01em; }
.atlas-card p { font-size:.88rem; line-height:1.85; text-align:justify; text-justify:inter-ideograph; }
@media (min-width:1500px) { .hero-copy h1 { font-size:5rem; } }
@media (max-width:1100px) { .hero-layout { grid-template-columns:1fr; }.main-grid { grid-template-columns:1fr; }.hero-copy h1 { max-width:780px; }.hero-lead { max-width:680px; } }
@media (max-width:700px) { body { font-size:15px; }.hero-copy h1 { font-size:clamp(2.45rem,11vw,3.2rem); line-height:1.18; letter-spacing:-.035em; }.hero-copy h1 br { display:none; }.hero-lead { text-align:left; }.hero-facts { gap:20px 30px; }.main-content-section { padding:64px 0 72px; }.atlas-heading h2 { font-size:2.25rem; }.atlas-heading > p,.atlas-card p,.honors-text p { text-align:left; } }
.hero-copy h1 span { color:#8ed2cc; font-weight:650; }

/* Cinematic hydrate-film hero */
.home-hero {
    isolation:isolate;
    min-height:620px;
    background:#071f27 url('../images/hydrate-cage-poster.jpg') 68% center/cover no-repeat;
}
.hero-video {
    position:absolute;
    z-index:-3;
    inset:0;
    width:100%;
    height:100%;
    object-fit:cover;
    object-position:center center;
    pointer-events:none;
}
.hero-video-shade {
    position:absolute;
    z-index:-2;
    inset:0;
    pointer-events:none;
    background:
        linear-gradient(90deg,rgba(5,24,31,.98) 0%,rgba(5,24,31,.92) 33%,rgba(5,24,31,.67) 52%,rgba(5,24,31,.18) 76%,rgba(5,24,31,.32) 100%),
        linear-gradient(0deg,rgba(4,20,27,.45),transparent 36%,rgba(4,20,27,.13));
}
.home-hero::after { z-index:-1; opacity:.055; }
.home-hero .hero-layout {
    grid-template-columns:minmax(0,880px);
    justify-content:start;
    width:calc(100% - 96px);
    max-width:1720px;
    min-height:620px;
    padding-top:72px;
    padding-bottom:72px;
}
.home-hero .hero-copy { max-width:850px; }
.home-hero .hero-copy h1 { max-width:850px; text-shadow:0 3px 28px rgba(0,0,0,.22); }
.home-hero .hero-lead { max-width:720px; color:rgba(211,228,226,.86); }
@media (min-width:1600px) {
    .home-hero .hero-layout { width:calc(100% - 140px); }
}
@media (max-width:850px) {
    .home-hero { min-height:auto; background-position:64% center; }
    .home-hero .hero-layout { width:calc(100% - 48px); min-height:560px; padding-top:64px; padding-bottom:64px; }
    .hero-video { object-position:64% center; }
    .hero-video-shade { background:linear-gradient(90deg,rgba(5,24,31,.96),rgba(5,24,31,.76)),linear-gradient(0deg,rgba(4,20,27,.38),transparent); }
}
@media (max-width:620px) {
    .home-hero .hero-layout { width:calc(100% - 36px); min-height:auto; padding-top:54px; padding-bottom:58px; }
    .hero-video { opacity:.54; }
}
@media (prefers-reduced-motion:reduce) {
    .hero-video { display:none; }
}

/* Editorial scroll choreography */
.home-hero {
    --hero-scale:1;
    --hero-shift:0px;
    --hero-copy-opacity:1;
    --hero-video-opacity:1;
}
.hero-video {
    opacity:var(--hero-video-opacity);
    transform:scale(var(--hero-scale));
    transform-origin:72% center;
    will-change:transform,opacity;
}
.home-hero .hero-copy {
    opacity:var(--hero-copy-opacity);
    transform:translate3d(0,var(--hero-shift),0);
    will-change:transform,opacity;
}
.main-content-section {
    position:relative;
    z-index:3;
    margin-top:-30px;
    padding-top:102px;
    background:linear-gradient(180deg,#fbfdfd 0%,#fff 260px);
    border-radius:30px 30px 0 0;
    box-shadow:0 -20px 55px rgba(4,27,34,.12);
}
.main-content-section::before {
    content:'';
    position:absolute;
    top:30px;
    left:50%;
    width:min(92px,20vw);
    height:2px;
    transform:translateX(-50%);
    background:linear-gradient(90deg,transparent,#c58b3a,transparent);
}
.reveal-item {
    opacity:0;
    transform:translate3d(0,42px,0);
    transition:
        opacity .82s cubic-bezier(.22,1,.36,1) var(--reveal-delay,0ms),
        transform 1s cubic-bezier(.22,1,.36,1) var(--reveal-delay,0ms);
    will-change:transform,opacity;
}
.reveal-item.is-visible {
    opacity:1;
    transform:translate3d(0,0,0);
}
.atlas-card.reveal-item { transform:translate3d(0,54px,0) scale(.985); }
.atlas-card.reveal-item.is-visible { transform:translate3d(0,0,0) scale(1); }
.atlas-card.featured.reveal-item.is-visible { transform:translateY(-22px) scale(1); }
.navbar {
    transition:padding .35s ease,box-shadow .35s ease,background-color .35s ease,backdrop-filter .35s ease;
}
.navbar.is-scrolled {
    background:rgba(255,255,255,.86);
    box-shadow:0 10px 32px rgba(18,63,70,.1);
    backdrop-filter:blur(18px) saturate(1.25);
}
.navbar.is-scrolled .container { min-height:58px; }
@media (max-width:900px) {
    .main-content-section { margin-top:-18px; padding-top:74px; border-radius:20px 20px 0 0; }
    .atlas-card.featured.reveal-item.is-visible { transform:none; }
}
@media (prefers-reduced-motion:reduce) {
    .hero-video,.home-hero .hero-copy { transform:none; opacity:1; will-change:auto; }
    .reveal-item,.atlas-card.reveal-item,.atlas-card.featured.reveal-item {
        opacity:1;
        transform:none;
        transition:none;
        will-change:auto;
    }
}


/* Accessible text that remains available to assistive technology. */
.visually-hidden {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
}

/* Final narrow-screen safeguards shared by all public pages. */
html,
body {
    max-width: 100%;
    overflow-x: clip;
}

.hamburger {
    width: 42px;
    height: 42px;
    flex: 0 0 42px;
    align-items: center;
    justify-content: center;
}

@media (max-width: 700px) {
    .navbar {
        padding: 10px 0;
    }

    .navbar .container {
        width: calc(100% - 28px);
        padding: 0;
    }

    .home-hero .hero-layout {
        width: calc(100% - 40px);
        padding-top: 48px;
        padding-bottom: 54px;
    }

    .home-hero .hero-copy h1 {
        max-width: 12em;
        font-size: clamp(2.05rem, 9.6vw, 2.75rem);
        line-height: 1.2;
        letter-spacing: -.035em;
    }

    .home-hero .hero-copy h1 span {
        display: block;
        margin-top: .08em;
    }

    .home-hero .hero-lead {
        margin-top: 22px;
        font-size: .94rem;
        line-height: 1.82;
    }

    .hero-actions {
        gap: 10px;
    }

    .hero-button {
        min-height: 44px;
    }

    .hero-facts {
        display: grid;
        grid-template-columns: repeat(3, minmax(0, 1fr));
        gap: 12px;
    }

    .hero-facts div {
        min-width: 0;
    }

    .hero-facts strong {
        font-size: 1.05rem;
    }

    .hero-facts span {
        font-size: .66rem;
        line-height: 1.45;
    }
}