/* ==========================================================================
   蒋皆恢课题组 / Jiang Lab @ SHU
   编辑学术风（Harvard-inspired）：Crimson 主色 + 衬线大标题 + eyebrow 标签
   英文：Source Serif 4 (标题) + Inter (正文)
   中文：思源宋体 Noto Serif SC (标题) + 思源黑体 Noto Sans SC (正文)
   通过 fonts.loli.net (国内可访问的 Google Fonts 镜像) 加载
   ========================================================================== */

@import url('https://fonts.loli.net/css2?family=Inter:wght@400;500;600;700&family=Noto+Sans+SC:wght@300;400;500;600;700&family=Noto+Serif+SC:wght@500;600;700;800&family=Source+Serif+4:wght@500;600;700;800&display=swap');

:root {
    /* Crimson 主色系 — 借鉴 Harvard #A51C30，同时契合上大红 */
    --color-primary: #a51c30;
    --color-primary-dark: #6f1320;
    --color-primary-light: #c8344c;
    --color-accent: #b8902a;          /* 暗金，做点缀，不抢主色 */
    --color-ink: #1a1a1a;              /* 编辑风近黑色 */
    --color-text: #1f2024;
    --color-text-muted: #5d5f66;
    --color-border: #e7e3da;          /* 偏暖的边线 */
    --color-bg: #ffffff;
    --color-bg-soft: #faf7f1;          /* 暖米色，报纸感 */
    --color-bg-alt: #f1ece2;
    --color-shu-blue: #00447c;        /* 上大蓝，用于顶条等机构性元素 */

    --font-sans: "Inter", "Noto Sans SC", -apple-system, BlinkMacSystemFont,
        "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
        "Helvetica Neue", Arial, sans-serif;
    --font-serif: "Source Serif 4", "Noto Serif SC", Georgia,
        "Times New Roman", "Songti SC", "STSong", serif;

    --max-width: 1180px;
    --radius: 4px;
    --shadow-sm: 0 1px 2px rgba(26, 26, 26, 0.04), 0 1px 3px rgba(26, 26, 26, 0.06);
    --shadow-md: 0 6px 22px rgba(26, 26, 26, 0.08);
    --transition: 0.18s ease;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    margin: 0;
    font-family: var(--font-sans);
    font-size: 15.5px;
    line-height: 1.7;
    color: var(--color-text);
    background: var(--color-bg);
    -webkit-font-smoothing: antialiased;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition), border-color var(--transition);
}
a:hover { color: var(--color-primary-dark); }

img { max-width: 100%; display: block; }

/* 编辑感衬线标题 — Harvard 风核心 */
h1, h2, h3 {
    font-family: var(--font-serif);
    color: var(--color-ink);
    font-weight: 600;
    line-height: 1.25;
    letter-spacing: -0.01em;
    margin: 0 0 0.55em;
}
h4 {
    font-family: var(--font-sans);
    color: var(--color-ink);
    font-weight: 600;
    line-height: 1.35;
    margin: 0 0 0.5em;
}

h1 { font-size: 2.7rem; font-weight: 700; }
h2 { font-size: 1.95rem; }
h3 { font-size: 1.3rem; }
h4 { font-size: 1.02rem; }

p { margin: 0 0 1em; }

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* ----- Top bar (上大蓝条) ----- */
.topbar {
    background: var(--color-shu-blue);
    color: #d2dde8;
    font-size: 12.5px;
    letter-spacing: 0.3px;
    padding: 7px 0;
}
.topbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.topbar a { color: #d2dde8; }
.topbar a:hover { color: #fff; }

/* ----- Header / Nav ----- */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.97);
    backdrop-filter: blur(6px);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
}

.nav-wrap {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 22px 0;
}

.brand {
    display: flex;
    align-items: center;
    gap: 18px;
}
.brand img { height: 64px; }
.brand-text strong {
    display: block;
    font-family: var(--font-serif);
    font-size: 1.5rem;
    color: var(--color-ink);
    font-weight: 700;
    letter-spacing: 0;
    line-height: 1.15;
}
.brand-text span {
    display: block;
    font-size: 0.78rem;
    color: var(--color-primary);
    letter-spacing: 2.5px;
    text-transform: uppercase;
    font-weight: 600;
    margin-top: 4px;
}

.main-nav {
    display: flex;
    gap: 4px;
    align-items: center;
}
.main-nav a {
    padding: 14px 4px;
    margin: 0 16px;
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-ink);
    border-bottom: 2px solid transparent;
    border-radius: 0;
    transition: all var(--transition);
}
.main-nav a:hover {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
}
.main-nav a.active {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
}

.nav-toggle {
    display: none;
    background: none;
    border: 0;
    font-size: 1.4rem;
    cursor: pointer;
    color: var(--color-primary-dark);
}

/* ----- Hero（Harvard 编辑风：暖米底 + 衬线大标题） ----- */
.hero {
    background: var(--color-bg-soft);
    color: var(--color-ink);
    padding: 110px 0 90px;
    position: relative;
    overflow: hidden;
    border-bottom: 1px solid var(--color-border);
}
.hero::before {
    content: "";
    position: absolute;
    left: 0; right: 0; top: 0;
    height: 4px;
    background: var(--color-primary);
}
.hero .container { position: relative; z-index: 1; }
.hero h1 {
    color: var(--color-ink);
    font-family: var(--font-serif);
    font-size: 3.4rem;
    font-weight: 700;
    line-height: 1.12;
    letter-spacing: -0.015em;
    margin-bottom: 18px;
    max-width: 880px;
}
.hero .subtitle {
    display: inline-block;
    color: var(--color-primary);
    font-size: 0.78rem;
    letter-spacing: 3px;
    margin-bottom: 22px;
    text-transform: uppercase;
    font-weight: 600;
    position: relative;
    padding-left: 38px;
}
.hero .subtitle::before {
    content: "";
    position: absolute;
    left: 0; top: 50%;
    width: 28px; height: 2px;
    background: var(--color-primary);
    transform: translateY(-50%);
}
.hero .lead {
    max-width: 780px;
    font-size: 1.18rem;
    color: var(--color-text);
    line-height: 1.65;
    margin-bottom: 36px;
}
.hero-cta { display: flex; gap: 16px; flex-wrap: wrap; }

.btn {
    display: inline-block;
    padding: 13px 26px;
    border-radius: var(--radius);
    font-weight: 600;
    font-size: 0.93rem;
    letter-spacing: 0.3px;
    border: 1.5px solid transparent;
    cursor: pointer;
    transition: all var(--transition);
}
.btn-primary {
    background: var(--color-primary);
    color: #fff;
}
.btn-primary:hover { background: var(--color-primary-dark); color: #fff; }
.btn-outline {
    background: transparent;
    border-color: var(--color-ink);
    color: var(--color-ink);
}
.btn-outline:hover {
    background: var(--color-ink);
    color: #fff;
}

/* ----- Page header (non-home) ----- */
.page-header {
    background: var(--color-bg-soft);
    border-bottom: 1px solid var(--color-border);
    padding: 78px 0 56px;
    position: relative;
}
.page-header::before {
    content: "";
    position: absolute;
    left: 0; right: 0; top: 0;
    height: 4px;
    background: var(--color-primary);
}
.page-header h1 { margin: 0 0 6px; font-size: 2.7rem; }
.page-header .subtitle {
    display: inline-block;
    color: var(--color-primary);
    font-size: 0.76rem;
    letter-spacing: 3px;
    text-transform: uppercase;
    font-weight: 600;
    margin-bottom: 14px;
    padding-left: 38px;
    position: relative;
}
.page-header .subtitle::before {
    content: "";
    position: absolute;
    left: 0; top: 50%;
    width: 28px; height: 2px;
    background: var(--color-primary);
    transform: translateY(-50%);
}

/* ----- Section ----- */
section {
    padding: 88px 0;
}
section.alt { background: var(--color-bg-soft); }
.section-title {
    margin-bottom: 10px;
}
.section-subtitle {
    color: var(--color-primary);
    font-size: 0.76rem;
    letter-spacing: 3px;
    text-transform: uppercase;
    font-weight: 600;
    margin-bottom: 14px;
    display: inline-block;
    padding-left: 38px;
    position: relative;
}
.section-subtitle::before {
    content: "";
    position: absolute;
    left: 0; top: 50%;
    width: 28px; height: 2px;
    background: var(--color-primary);
    transform: translateY(-50%);
}
.section-head {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 36px;
}
.section-head h2 { margin-bottom: 0; }
.view-all {
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    border-bottom: 1.5px solid var(--color-primary);
    padding-bottom: 2px;
}
.view-all:hover {
    color: var(--color-primary-dark);
    border-bottom-color: var(--color-primary-dark);
}
.view-all::after { content: " →"; }

/* ----- Two column layout ----- */
.two-col {
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    gap: 56px;
    align-items: start;
}

/* ----- News list ----- */
.news-list {
    list-style: none;
    padding: 0;
    margin: 0;
}
.news-list li {
    display: flex;
    gap: 22px;
    padding: 20px 0;
    border-bottom: 1px solid var(--color-border);
    align-items: baseline;
}
.news-list li:last-child { border-bottom: 0; }
.news-date {
    flex: 0 0 110px;
    font-family: var(--font-serif);
    font-size: 0.92rem;
    color: var(--color-primary);
    font-weight: 700;
    letter-spacing: 0.5px;
}
.news-tag {
    display: inline-block;
    background: transparent;
    color: var(--color-primary);
    padding: 2px 0 2px 0;
    font-size: 0.7rem;
    border: 0;
    border-bottom: 1.5px solid var(--color-primary);
    border-radius: 0;
    margin-right: 12px;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    vertical-align: middle;
}
.news-tag.paper { color: var(--color-primary); border-color: var(--color-primary); }
.news-tag.grant { color: #8a6a14; border-color: #8a6a14; }
.news-tag.award { color: #9a2727; border-color: #9a2727; }
.news-tag.event { color: #1b6c3b; border-color: #1b6c3b; }

/* ----- Team gallery (点击切换 · 一次一张年度合影) ----- */
.team-gallery-wrap {
    margin: 0 0 64px;
    position: relative;
}
.team-gallery {
    position: relative;
    overflow: hidden;
}
.gallery-track {
    display: flex;
    transition: transform 0.45s cubic-bezier(0.4, 0, 0.2, 1);
    will-change: transform;
}
.gallery-slide {
    flex: 0 0 100%;
    min-width: 0;
    margin: 0;
}
.gallery-slide img,
.gallery-slide .ph-box {
    width: 100%;
    height: 480px;
    object-fit: cover;
    display: block;
}
.gallery-slide .ph-box {
    background: var(--color-bg-soft);
    border: 1px dashed var(--color-border);
    color: var(--color-text-muted);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    font-family: var(--font-serif);
    font-size: 3rem;
    font-weight: 700;
    text-align: center;
    letter-spacing: -0.02em;
}
.gallery-slide .ph-box small {
    font-family: var(--font-sans);
    font-size: 0.76rem;
    letter-spacing: 2.5px;
    text-transform: uppercase;
    margin-top: 16px;
    font-weight: 500;
    color: var(--color-primary);
}
.gallery-slide figcaption {
    margin-top: 16px;
    border-top: 1px solid var(--color-border);
    padding-top: 14px;
    display: flex;
    align-items: baseline;
    gap: 14px;
    flex-wrap: wrap;
}
.gallery-slide figcaption .year {
    font-family: var(--font-serif);
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1;
}
.gallery-slide figcaption .desc {
    font-size: 0.92rem;
    color: var(--color-text-muted);
}

/* 左右切换按钮 */
.gallery-nav {
    position: absolute;
    top: 240px;
    transform: translateY(-50%);
    width: 52px;
    height: 52px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.96);
    border: 1px solid var(--color-border);
    color: var(--color-ink);
    font-size: 1.5rem;
    font-family: var(--font-serif);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md);
    transition: all var(--transition);
    z-index: 2;
    padding: 0;
    line-height: 1;
}
.gallery-nav:hover {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}
.gallery-nav:disabled {
    opacity: 0.35;
    cursor: not-allowed;
}
.gallery-nav.prev { left: 18px; }
.gallery-nav.next { right: 18px; }

/* 底部圆点指示器 */
.gallery-dots {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 22px;
}
.gallery-dots .dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    border: 0;
    background: var(--color-border);
    cursor: pointer;
    padding: 0;
    transition: all var(--transition);
}
.gallery-dots .dot:hover { background: var(--color-text-muted); }
.gallery-dots .dot.active {
    background: var(--color-primary);
    width: 26px;
    border-radius: 4px;
}

@media (max-width: 900px) {
    .gallery-slide img, .gallery-slide .ph-box { height: 240px; }
    .gallery-slide .ph-box { font-size: 2.2rem; }
    .gallery-nav { top: 120px; width: 42px; height: 42px; font-size: 1.2rem; }
    .gallery-nav.prev { left: 10px; }
    .gallery-nav.next { right: 10px; }
}

/* 研究关键词标签 */
.kw {
    display: inline-block;
    padding: 7px 16px;
    border: 1px solid var(--color-border);
    border-radius: 24px;
    font-size: 0.86rem;
    color: var(--color-ink);
    background: #fff;
    transition: all var(--transition);
}
.kw:hover { border-color: var(--color-primary); color: var(--color-primary); }
.news-content { flex: 1; }
.news-content strong { color: var(--color-ink); font-weight: 600; }
.news-content small { color: var(--color-text-muted); display: block; margin-top: 4px; font-size: 0.88rem; line-height: 1.55; }

/* ----- Stats strip (编辑风：去阴影，留细线分隔) ----- */
.stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
    padding: 44px 32px;
    background: #fff;
    border-top: 3px solid var(--color-ink);
    border-bottom: 1px solid var(--color-border);
    border-left: 0;
    border-right: 0;
    border-radius: 0;
    box-shadow: none;
    margin-top: 0;
    position: relative;
    z-index: 1;
}
.stat {
    text-align: center;
    border-right: 1px solid var(--color-border);
    padding: 0 16px;
}
.stat:last-child { border-right: 0; }
.stat-num {
    font-family: var(--font-serif);
    font-size: 2.6rem;
    color: var(--color-primary);
    font-weight: 700;
    line-height: 1;
    letter-spacing: -0.02em;
}
.stat-num span { font-size: 1.1rem; color: var(--color-primary); vertical-align: super; margin-left: 2px; font-weight: 600; }
.stat-label {
    margin-top: 12px;
    font-size: 0.78rem;
    color: var(--color-text-muted);
    letter-spacing: 1.5px;
    text-transform: uppercase;
    font-weight: 500;
}

/* ----- Research cards (编辑卡片：顶部红线，左对齐) ----- */
.cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}
.card {
    background: #fff;
    border: 0;
    border-top: 3px solid var(--color-ink);
    border-radius: 0;
    padding: 26px 4px 0;
    transition: all var(--transition);
}
.card:hover {
    border-top-color: var(--color-primary);
    transform: none;
    box-shadow: none;
}
.card:hover h3 { color: var(--color-primary); }
.card .num {
    font-family: var(--font-sans);
    font-size: 0.72rem;
    color: var(--color-primary);
    letter-spacing: 3px;
    font-weight: 600;
    text-transform: uppercase;
    margin-bottom: 14px;
}
.card h3 {
    color: var(--color-ink);
    margin-bottom: 12px;
    transition: color var(--transition);
}
.card ul {
    padding-left: 18px;
    margin: 12px 0 0;
    color: var(--color-text);
    font-size: 0.93rem;
    line-height: 1.7;
}
.card ul li { margin-bottom: 6px; }
.card ul li::marker { color: var(--color-primary); }

/* ----- Team grid ----- */
.team-section { margin-bottom: 72px; }
.team-section h2 {
    border-left: 0;
    padding-left: 0;
    font-size: 1.6rem;
    margin-bottom: 28px;
    padding-bottom: 14px;
    border-bottom: 1px solid var(--color-border);
}

.pi-card {
    display: grid;
    grid-template-columns: 240px 1fr;
    gap: 48px;
    background: transparent;
    border: 0;
    border-top: 3px solid var(--color-ink);
    border-radius: 0;
    padding: 36px 0 0;
    box-shadow: none;
    margin-bottom: 48px;
}
.pi-card img {
    width: 100%;
    aspect-ratio: 3 / 4;
    object-fit: cover;
    border-radius: 0;
}
.pi-info h3 { font-size: 2rem; margin-bottom: 6px; }
.pi-info .title {
    color: var(--color-primary);
    font-weight: 600;
    font-size: 0.86rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 20px;
}
.pi-info .meta {
    display: grid;
    grid-template-columns: 80px 1fr;
    row-gap: 6px;
    column-gap: 12px;
    font-size: 0.94rem;
    margin: 0 0 18px;
}
.pi-info .meta dt { color: var(--color-text-muted); }
.pi-info .meta dd { margin: 0; }
.pi-info .bio { font-size: 0.96rem; color: var(--color-text); }

.member-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.member {
    background: transparent;
    border: 0;
    border-radius: 0;
    padding: 14px 4px 18px;
    text-align: center;
    transition: all var(--transition);
}
.member:hover {
    box-shadow: none;
    transform: translateY(-2px);
}
.member:hover h4 { color: var(--color-primary); }
.member .avatar {
    width: 110px;
    height: 110px;
    margin: 0 auto 14px;
    border-radius: 50%;
    overflow: hidden;
    background: var(--color-bg-alt);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    font-family: var(--font-serif);
    font-weight: 600;
    font-size: 1.8rem;
    border: 3px solid #fff;
    box-shadow: 0 0 0 1px var(--color-border);
}
.member .avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.member h4 { margin: 0 0 4px; font-size: 1rem; }
.member .role {
    font-size: 0.82rem;
    color: var(--color-text-muted);
    margin-bottom: 6px;
}
.member .interest {
    font-size: 0.82rem;
    color: var(--color-primary);
    line-height: 1.5;
}
.member .email {
    font-size: 0.78rem;
    color: var(--color-text-muted);
    word-break: break-all;
    margin-top: 6px;
}

/* ----- Publications (杂志体) ----- */
.pub-year {
    display: inline-block;
    background: transparent;
    color: var(--color-ink);
    padding: 0 0 8px 0;
    border: 0;
    border-bottom: 3px solid var(--color-primary);
    border-radius: 0;
    font-family: var(--font-serif);
    font-weight: 700;
    font-size: 1.6rem;
    margin: 40px 0 22px;
    letter-spacing: -0.01em;
}
.pub-list { list-style: none; padding: 0; margin: 0; }
.pub-list li {
    padding: 22px 0;
    border-bottom: 1px solid var(--color-border);
    display: flex;
    gap: 22px;
}
.pub-list li:last-child { border-bottom: 0; }
.pub-num {
    flex: 0 0 36px;
    font-family: var(--font-serif);
    color: var(--color-primary);
    font-weight: 700;
    font-size: 1rem;
    padding-top: 2px;
}
.pub-body { flex: 1; }
.pub-title {
    font-family: var(--font-serif);
    color: var(--color-ink);
    font-weight: 600;
    font-size: 1.08rem;
    line-height: 1.4;
    display: block;
    margin-bottom: 6px;
}
.pub-authors { font-size: 0.92rem; color: var(--color-text); margin-bottom: 4px; line-height: 1.55; }
.pub-venue { font-size: 0.9rem; color: var(--color-text-muted); font-style: italic; }
.pub-venue strong { color: var(--color-primary); font-style: normal; font-weight: 600; }

/* ----- Project / grant cards ----- */
.grant-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
    margin-bottom: 32px;
}
.grant {
    background: transparent;
    border: 0;
    border-top: 3px solid var(--color-primary);
    padding: 18px 0 0;
    border-radius: 0;
    box-shadow: none;
}
.grant .grant-type {
    font-size: 0.72rem;
    color: var(--color-primary);
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 8px;
}
.grant h4 { margin: 0 0 10px; color: var(--color-ink); font-family: var(--font-serif); font-size: 1.08rem; font-weight: 600; line-height: 1.4; }
.grant .grant-meta { font-size: 0.88rem; color: var(--color-text-muted); }
.grant .grant-meta strong { color: var(--color-ink); }

/* ----- Contact ----- */
.contact-grid {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 48px;
    align-items: start;
}
.contact-card {
    background: transparent;
    padding: 36px 0 0;
    border: 0;
    border-top: 3px solid var(--color-ink);
    border-radius: 0;
    box-shadow: none;
}
.contact-card h3 {
    margin-top: 0;
    border-bottom: 0;
    padding-bottom: 0;
    display: block;
    font-size: 1.6rem;
}
.contact-list { list-style: none; padding: 0; margin: 18px 0 0; }
.contact-list li {
    display: flex;
    gap: 14px;
    padding: 10px 0;
    align-items: flex-start;
}
.contact-list .ico {
    flex: 0 0 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--color-bg-alt);
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
}
.contact-list .ico svg { width: 16px; height: 16px; }
.contact-list .label {
    font-size: 0.78rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.contact-list .value { color: var(--color-text); font-size: 0.98rem; }

.recruit-box {
    background: var(--color-primary);
    color: #fff;
    padding: 36px;
    border-radius: 0;
}
.recruit-box h3 { color: #fff; margin-top: 0; }
.recruit-box p { color: rgba(255,255,255,0.92); }
.recruit-box ul { padding-left: 18px; color: rgba(255,255,255,0.92); }
.recruit-box li { margin-bottom: 6px; }
.recruit-box ul li::marker { color: rgba(255,255,255,0.5); }

/* ----- Footer (深黑底，编辑感) ----- */
.site-footer {
    background: var(--color-ink);
    color: rgba(255,255,255,0.7);
    padding: 56px 0 28px;
    margin-top: 88px;
    font-size: 0.9rem;
    border-top: 4px solid var(--color-primary);
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 36px;
}
.footer-grid h4 {
    color: #fff;
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 16px;
    font-weight: 600;
    font-family: var(--font-sans);
}
.footer-grid a { color: rgba(255,255,255,0.72); }
.footer-grid a:hover { color: var(--color-primary-light); }
.footer-grid ul { list-style: none; padding: 0; margin: 0; }
.footer-grid ul li { margin-bottom: 8px; font-size: 0.9rem; }
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.12);
    padding-top: 22px;
    text-align: center;
    font-size: 0.8rem;
    letter-spacing: 0.5px;
    color: rgba(255,255,255,0.5);
}

/* ----- Mobile ----- */
@media (max-width: 900px) {
    .nav-toggle { display: block; }
    .main-nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: #fff;
        flex-direction: column;
        padding: 12px 24px;
        border-bottom: 1px solid var(--color-border);
        box-shadow: var(--shadow-md);
        gap: 0;
    }
    .main-nav.open { display: flex; }
    .main-nav a { padding: 12px 4px; margin: 0; border-bottom: 1px solid var(--color-border); }
    .main-nav a:last-child { border-bottom: 0; }

    .two-col, .contact-grid { grid-template-columns: 1fr; gap: 40px; }
    .cards { grid-template-columns: 1fr; gap: 32px; }
    .grant-list { grid-template-columns: 1fr; }
    .stats { grid-template-columns: repeat(2, 1fr); margin-top: 0; padding: 28px 16px; }
    .stat { border-right: 0; padding: 14px 6px; }
    .stat:nth-child(odd) { border-right: 1px solid var(--color-border); }
    .stat:nth-child(1), .stat:nth-child(2) { border-bottom: 1px solid var(--color-border); }
    .stat-num { font-size: 2rem; }
    .member-grid { grid-template-columns: repeat(2, 1fr); }
    .pi-card { grid-template-columns: 1fr; padding: 28px 0 0; gap: 24px; }
    .pi-card img { max-width: 220px; margin: 0; }
    .pi-info h3 { font-size: 1.6rem; }
    .footer-grid { grid-template-columns: 1fr; gap: 28px; }
    .hero { padding: 68px 0 56px; }
    .hero h1 { font-size: 2rem; }
    .hero .lead { font-size: 1.02rem; }
    .page-header { padding: 52px 0 36px; }
    .page-header h1 { font-size: 1.9rem; }
    h1 { font-size: 1.9rem; }
    h2 { font-size: 1.5rem; }
    .topbar { display: none; }
    section { padding: 56px 0; }
    .brand img { height: 48px; }
    .brand-text strong { font-size: 1.15rem; }
    .brand-text span { font-size: 0.7rem; letter-spacing: 1.8px; }
    .nav-wrap { padding: 16px 0; }
}