/* Page-specific source rules for the people mockup.
   Shared editorial overrides remain in mockup.css. */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            background-color: #ffffff;
            color: #111111;
            font-family: 'Inter', sans-serif;
            line-height: 1.5;
            scroll-behavior: smooth;
            overflow-x: hidden;
        }

        ::selection {
            background: #111;
            color: #fff;
        }

        ::-webkit-scrollbar {
            width: 6px;
        }

        ::-webkit-scrollbar-track {
            background: #f0f0f0;
        }

        ::-webkit-scrollbar-thumb {
            background: #888;
            border-radius: 0px;
        }

        ::-webkit-scrollbar-thumb:hover {
            background: #222;
        }

        /* 区块标题样式 */
        .section-header {
            font-size: 1.25rem;
            font-weight: 600;
            letter-spacing: -0.2px;
            color: #111;
            margin-bottom: 1rem;
            border-left: none;
            padding-left: 0;
        }

        .section-header small {
            font-size: 0.8rem;
            font-weight: 400;
            color: #888;
            margin-left: 0.5rem;
        }

        /* 主要成员网格 */
        .team-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2.5rem;
            margin: 1rem 0 2rem;
        }

        .team-card {
            background: #fff;
            border: 1px solid #efefef;
            padding: 1.8rem;
            transition: all 0.65s cubic-bezier(0.2, 0.9, 0.4, 1.1);
            text-align: center;
            cursor: default;
            display: flex;
            flex-direction: column;
        }

        .team-card:hover {
            border-color: #aaa;
            transform: translateY(-6px);
            box-shadow: 0 18px 30px -12px rgba(0, 0, 0, 0.12);
        }

        .photo-placeholder {
            width: 150px;
            height: 150px;
            background: #f0f0f0;
            border-radius: 50%;
            margin: 0 auto 1rem;
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
            border: 1px solid #e2e2e2;
        }

        .photo-placeholder img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .team-name {
            font-size: 1.4rem;
            font-weight: 600;
            margin-bottom: 0.25rem;
        }

        .member-extra {
            max-height: none;
            opacity: 1;
            overflow: visible;
            margin-top: 1.2rem;
            text-align: left;
            border-top: 1px solid #ececec;
            padding-top: 1rem;
        }

        .team-card.expanded .member-extra {
            max-height: none;
        }

        .member-bio {
            font-size: 0.88rem;
            line-height: 1.5;
            color: #2d2d2d;
            margin-bottom: 0.7rem;
        }

        .member-bio.eng-text {
            border-left: none;
            padding-left: 0;
            font-size: 0.82rem;
            color: #4b4b4b;
            margin-bottom: 0.7rem;
        }

        /* 社交链接容器（替换原 .member-email） */
        .member-links {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 1rem;
            margin-top: 0.5rem;
            flex-wrap: wrap;
        }

        .member-link-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 24px;
            height: 24px;
            transition: all 0.2s ease;
            text-decoration: none;
        }

        /* 默认图标浅色/半透明 */
        .member-link-icon img,
        .member-link-icon svg {
            opacity: 1;
            /* 或 0.6，根据喜好调整 */
            transition: opacity 0.2s ease;
        }

        /* 悬浮时变深/完全不透明 */
        .member-link-icon:hover img,
        .member-link-icon:hover svg {
            opacity: 0.7;
        }

        /* 邮箱图标（内联 SVG 保证显示正常） */
        .member-link-icon.email svg {
            fill: none;
            stroke: #6c6c6c;
            stroke-width: 1.5;
        }

        .member-link-icon.email:hover svg {
            stroke: #000000;
        }

        .default-bio {
            font-size: 0.9rem;
            color: #3a3a3a;
            line-height: 1.5;
        }

        .default-bio.eng-text {
            font-size: 0.85rem;
            margin-top: 0.6rem;
        }

        /* ========== 合作者区域样式 ========== */
        .collaborators-grid {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 2.5rem;
            margin-top: 1.5rem;
        }

        .collab-card {
            text-align: center;
            flex: 0 1 240px;
            min-width: 180px;
            max-width: 260px;
            transition: all 0.2s ease;
            cursor: pointer;
        }

        .collab-card:hover {
            transform: translateY(-4px);
        }

        .card-link {
            display: block;
            text-decoration: none;
            color: inherit;
            height: 100%;
        }

        .collab-avatar {
            width: 130px;
            height: 130px;
            background: #f6f6f6;
            border-radius: 50%;
            margin: 0 auto 0.8rem;
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
            border: 1px solid #e2e2e2;
        }

        .collab-avatar img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
        }

        .collab-name {
            display: flex;
            font-weight: 600;
            align-items: center;
            justify-content: center;
            gap: 0.4rem;
            flex-wrap: wrap;
        }

        .collab-name .country-flag {
            display: inline-flex;
            align-items: center;
            width: 20px;
            height: 15px;
            background-size: cover;
            background-repeat: no-repeat;
            background-position: center;
            border-radius: 2px;
            box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.05);
            vertical-align: middle;
        }

        .collab-title {
            font-size: 0.75rem;
            color: #666;
            line-height: 1.4;
        }

        .collab-year {
            font-size: 0.7rem;
            color: #888;
            margin-top: 0.25rem;
            letter-spacing: 0.3px;
        }

        /* ========== 研究学生区域样式 ========== */
        .research-students-section {
            margin-top: 3rem;
        }

        .students-grid {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 2.5rem;
            margin-top: 1.5rem;
        }

        .student-card {
            text-align: center;
            flex: 0 1 240px;
            min-width: 180px;
            max-width: 260px;
            transition: all 0.2s ease;
            cursor: pointer;
        }

        .student-card:hover {
            transform: translateY(-4px);
        }

        .student-avatar {
            width: 130px;
            height: 130px;
            background: #f6f6f6;
            border-radius: 50%;
            margin: 0 auto 0.8rem;
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
            border: 1px solid #e2e2e2;
        }

        .student-avatar img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
        }

        .student-name {
            display: flex;
            font-weight: 600;
            align-items: center;
            justify-content: center;
            gap: 0.4rem;
            flex-wrap: wrap;
        }

        .student-name .country-flag {
            display: inline-flex;
            align-items: center;
            width: 20px;
            height: 15px;
            background-size: cover;
            background-repeat: no-repeat;
            background-position: center;
            border-radius: 2px;
            box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.05);
            vertical-align: middle;
        }

        .student-title {
            font-size: 0.75rem;
            color: #666;
            line-height: 1.4;
        }

        .student-year {
            font-size: 0.7rem;
            color: #888;
            margin-top: 0.25rem;
            letter-spacing: 0.3px;
        }

        /* ========== 手机端适配 ========== */
        @media (max-width: 680px) {

            .collaborators-grid,
            .students-grid {
                gap: 1.5rem;
            }

            .collab-avatar,
            .student-avatar {
                width: 100px;
                height: 100px;
            }

            .collab-name,
            .student-name {
                gap: 0.3rem;
            }

            .collab-name .country-flag,
            .student-name .country-flag {
                font-size: 0.8rem;
            }

            .collab-title,
            .student-title {
                font-size: 0.7rem;
            }

            .collab-year,
            .student-year {
                font-size: 0.65rem;
            }

            .member-links {
                gap: 0.8rem;
            }

            .member-link-icon {
                width: 22px;
                height: 22px;
            }
        }

        .footer {
            padding: 2.5rem 0 2rem;
            text-align: center;
            border-top: 1px solid #ececec;
            margin-top: 3rem;
            font-size: 0.8rem;
            color: #5a5a5a;
        }

        @media (max-width: 680px) {
            .page-title {
                font-size: 1.6rem;
            }

            .team-grid {
                gap: 1.5rem;
            }

            .photo-placeholder {
                width: 120px;
                height: 120px;
            }
        }

        /* 页面头部样式 */
        .page-header {
            text-align: left;
            padding: 2rem 0 1.5rem;
            margin-bottom: 1rem;
            border-bottom: 1px solid #eaeaea;
        }

        .page-header h1 {
            font-size: 2.5rem;
            font-weight: 700;
            margin: 0 0 0.5rem;
            color: #1a1a1a;
        }

        .page-header .page-subtitle {
            font-size: 1rem;
            color: #4a4a4a;
            margin-bottom: 0.5rem;
            line-height: 1.5;
        }

        .page-header .chn-text {
            color: #4a4a4a;
            font-size: 0.9rem;
            border-left: 2px solid #ddd;
            padding-left: 1rem;
            margin-top: 0.5rem;
        }

        @media (max-width: 768px) {
            .page-header h1 {
                font-size: 1.8rem;
            }
        }

/* Touch-device expansion state used by the page script. */
.mockup-people .team-card.touch-expand .member-extra {
    max-height: 500px;
    opacity: 1;
    margin-top: 1.2rem;
    border-top: 1px solid #ececec;
    padding-top: 1rem;
}

.mockup-people .team-card.touch-expand {
    border-color: #aaa;
    transform: translateY(-4px);
    box-shadow: 0 12px 24px -12px rgba(0, 0, 0, .08);
}