:root {
    --bg-dark: #0a0c10;
    --bg-card: rgba(255, 255, 255, 0.03);
    --border-glass: rgba(255, 255, 255, 0.1);
    --accent-blue: #00d2ff;
    --accent-purple: #9d50bb;
    --text-main: #e0e6ed;
    --text-muted: #94a3b8;
    --navbar-height: 80px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    overflow-x: hidden;
}

h1,
h2,
h3,
.logo {
    font-family: 'Outfit', sans-serif;
}

/* --- 背景动画 --- */
.blob-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
    filter: blur(80px);
    opacity: 0.4;
}

.blob {
    position: absolute;
    border-radius: 50%;
}

.blob-1 {
    width: 500px;
    height: 500px;
    background: linear-gradient(45deg, var(--accent-blue), #3a7bd5);
    top: -100px;
    right: -100px;
    animation: move 20s infinite alternate;
}

.blob-2 {
    width: 400px;
    height: 400px;
    background: linear-gradient(45deg, var(--accent-purple), #6e48aa);
    bottom: -50px;
    left: -50px;
    animation: move 15s infinite alternate-reverse;
}

@keyframes move {
    from {
        transform: translate(0, 0);
    }

    to {
        transform: translate(100px, 100px);
    }
}

/* --- 全局导航 (Hybrid Navigation) --- */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    padding: 20px 0;
    z-index: 1000;
    transition: all 0.4s ease;
    background: transparent;
}

.navbar.scrolled {
    background: rgba(10, 10, 12, 0.85);
    backdrop-filter: blur(20px);
    padding: 15px 0;
    border-bottom: 1px solid var(--border-glass);
}

.nav-container {
    max-width: 1300px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 40px;
}

.logo {
    font-family: 'Outfit', sans-serif;
    font-size: 1.6rem;
    font-weight: 700;
    color: #fff;
    text-decoration: none;
    letter-spacing: -1px;
}

.logo span {
    color: var(--accent-blue);
    font-weight: 800; /* Bolder for TR */
    margin: 0 2px;
}

.nav-links {
    display: flex;
    gap: 35px;
    list-style: none;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-muted);
    font-weight: 500;
    font-size: 0.92rem;
    transition: all 0.3s ease;
    position: relative;
    letter-spacing: 0.5px;
}

.nav-links a:hover,
.nav-links a.active {
    color: #fff;
}

/* --- Hero Section (不对称卡片重构) --- */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 5%;
    position: relative;
    overflow: hidden;
}

.hero-cards-container {
    position: relative;
    width: 100%;
    max-width: 1300px;
    height: 500px;
    display: flex;
    align-items: center;
}

.hero-card-lab {
    background: rgba(255, 255, 255, 0.03);
    backdrop-filter: blur(15px);
    border: 1px solid var(--border-glass);
    padding: 60px;
    border-radius: 40px;
    width: 65%;
    position: absolute;
    left: 0;
    z-index: 2;
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.3);
    border-left: 4px solid var(--accent-blue);
}

.hero-card-lab h1 {
    font-size: clamp(2rem, 5vw, 3.8rem);
    font-weight: 800;
    margin-bottom: 20px;
    line-height: 1.1;
}

.hero-card-lab h1 span {
    display: block;
    background: linear-gradient(90deg, var(--accent-blue), var(--accent-purple));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-card-lab p {
    color: var(--text-muted);
    font-size: 1.1rem;
    max-width: 500px;
}

.hero-card-skybound {
    background: rgba(255, 255, 255, 0.02);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-glass);
    padding: 40px;
    border-radius: 30px;
    width: 35%;
    position: absolute;
    right: -20px;
    top: 60%;
    transform: translateY(-50%);
    z-index: 1;
    text-align: center;
    transition: all 0.4s ease;
}

.hero-card-skybound:hover {
    transform: translateY(-55%) scale(1.02);
    border-color: var(--accent-purple);
    background: rgba(255, 255, 255, 0.04);
}

.hero-card-skybound h2 {
    font-size: 1.5rem;
    margin-bottom: 8px;
    color: var(--accent-purple);
}

.skybound-note {
    font-size: 0.85rem;
    color: var(--accent-purple);
    font-weight: 500;
    margin-bottom: 20px;
    line-height: 1.4;
}

.skybound-link {
    display: inline-block;
    margin-top: 15px;
    color: var(--text-main);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 600;
    padding: 8px 20px;
    border-radius: 20px;
    background: rgba(144, 114, 255, 0.15);
    border: 1px solid rgba(144, 114, 255, 0.3);
    transition: all 0.3s ease;
}

.skybound-link:hover {
    background: var(--accent-purple);
    color: #000;
}

/* --- 快速入口 (移至底部) --- */
.quick-access-section {
    padding: 100px 5%;
    background: rgba(255, 255, 255, 0.01);
}

.quick-access-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.access-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-glass);
    padding: 40px 30px;
    border-radius: 24px;
    text-align: center;
    text-decoration: none;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.access-card:hover {
    transform: translateY(-15px);
    border-color: var(--accent-blue);
    background: rgba(255, 255, 255, 0.06);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.4);
}

.access-card .icon {
    font-size: 2.5rem;
    margin-bottom: 20px;
    display: block;
}

.access-card h3 {
    color: #fff;
    font-size: 1.3rem;
    margin-bottom: 10px;
}

.access-card p {
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* --- 新闻与研究方向 --- */
.research-news-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}

.news-list {
    list-style: none;
    background: rgba(255, 255, 255, 0.02);
    border-radius: 20px;
    padding: 30px;
    border: 1px solid var(--border-glass);
}

.news-item {
    padding: 15px 0;
    border-bottom: 1px solid var(--border-glass);
    display: flex;
    justify-content: space-between;
    gap: 15px;
}

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

.news-date {
    font-size: 0.8rem;
    color: var(--accent-blue);
    font-weight: 600;
    white-space: nowrap;
}

.news-title {
    font-size: 0.95rem;
    color: var(--text-main);
}

/* --- 响应式微调 --- */
@media (max-width: 992px) {
    .nav-links {
        display: none;
    }

    /* 移动端暂时隐藏复杂导航，或可改为汉堡菜单 */

    .hero-cards-container {
        height: auto;
        display: flex;
        flex-direction: column;
        gap: 20px;
    }

    .hero-card-lab,
    .hero-card-skybound {
        position: static;
        width: 100%;
        transform: none !important;
    }

    .quick-access-grid {
        grid-template-columns: 1fr;
    }

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

/* --- 通用 Section --- */
.section {
    padding: 100px 20px;
}

.alt-bg {
    background: rgba(255, 255, 255, 0.02);
}

.container {
    max-width: 1100px;
    margin: 0 auto;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 50px;
    text-align: center;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: var(--accent-blue);
    margin: 15px auto 0;
    border-radius: 2px;
}

/* --- 玻璃材质卡片 --- */
.glass {
    background: var(--bg-card);
    backdrop-filter: blur(16px);
    border: 1px solid var(--border-glass);
    border-radius: 24px;
}

/* --- 导师板块 --- */
.mentor-card {
    display: grid;
    grid-template-columns: 350px 1fr;
    gap: 40px;
    padding: 50px;
    align-items: center;
}

.mentor-img-placeholder {
    width: 100%;
    aspect-ratio: 1;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    border: 1px dashed var(--border-glass);
}

.mentor-info h3 {
    font-size: 2.2rem;
    margin-bottom: 10px;
}

.mentor-title {
    color: var(--accent-blue);
    font-weight: 600;
    margin-bottom: 20px;
}

/* --- 成果板块 --- */
.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.glass-card {
    padding: 35px;
    border-radius: 24px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-glass);
    transition: all 0.4s;
}

.glass-card:hover {
    border-color: var(--accent-blue);
    transform: translateY(-10px);
    background: rgba(255, 255, 255, 0.05);
}

.tag {
    display: inline-block;
    padding: 4px 12px;
    background: rgba(0, 210, 255, 0.1);
    color: var(--accent-blue);
    font-size: 0.75rem;
    font-weight: 700;
    border-radius: 6px;
    margin-bottom: 15px;
}

/* --- 团队板块 --- */
.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    text-align: center;
}

.member-card {
    padding: 30px;
}

.member-avatar {
    width: 100px;
    height: 100px;
    background: linear-gradient(135deg, #1e293b, #0f172a);
    border-radius: 50%;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    border: 2px solid var(--border-glass);
}

/* --- 工作室板块 --- */
.workspace-glass {
    padding: 80px 40px;
    text-align: center;
}

.workspace-content h2 span {
    font-size: 1rem;
    opacity: 0.6;
    vertical-align: middle;
}

.features {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-top: 40px;
    flex-wrap: wrap;
}

.feature-item {
    background: rgba(255, 255, 255, 0.05);
    padding: 10px 20px;
    border-radius: 12px;
    font-size: 0.9rem;
}

/* --- Footer --- */
.footer {
    padding: 60px 20px;
    border-top: 1px solid var(--border-glass);
    text-align: center;
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* --- 导师板块升级 --- */
.mentor-layout {
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: 50px;
    padding: 60px;
    align-items: start;
}

.mentor-img-container {
    width: 100%;
    aspect-ratio: 1;
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid var(--border-glass);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.mentor-photo {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s;
}

.mentor-photo:hover {
    transform: scale(1.05);
}

.mentor-basic-info h3 {
    font-size: 2.5rem;
    margin-top: 25px;
    margin-bottom: 5px;
}

.contact-box {
    margin-top: 20px;
    font-size: 0.9rem;
}

.contact-box .label {
    color: var(--accent-blue);
    margin-right: 8px;
    font-weight: 600;
}

.contact-box a {
    color: var(--text-main);
    text-decoration: none;
}

.mentor-main-content {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.bio-section h4 {
    font-size: 1.3rem;
    color: var(--accent-blue);
    margin-bottom: 15px;
    border-left: 3px solid var(--accent-blue);
    padding-left: 12px;
}

.timeline {
    list-style: none;
    position: relative;
    padding-left: 20px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 5px;
    bottom: 5px;
    width: 1px;
    background: var(--border-glass);
}

.timeline li {
    margin-bottom: 20px;
    position: relative;
}

.timeline li::before {
    content: '';
    position: absolute;
    left: -24px;
    top: 8px;
    width: 9px;
    height: 9px;
    background: var(--accent-blue);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--accent-blue);
}

.timeline .time {
    display: block;
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 600;
}

.timeline .event {
    display: block;
    font-size: 1rem;
    margin-top: 4px;
}

/* --- 子页面专用样式 --- */
.subpage-main {
    padding-top: 120px;
    min-height: 80vh;
}

.breadcrumb {
    margin-bottom: 20px;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.breadcrumb a {
    color: var(--accent-blue);
    text-decoration: none;
    margin-right: 5px;
}

.detail-container {
    padding: 60px;
    margin: 40px 0;
    min-height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.content-placeholder {
    max-width: 500px;
}

.content-placeholder p {
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-bottom: 25px;
}

.empty-state-icon {
    font-size: 4rem;
    opacity: 0.2;
}

.back-home {
    text-align: center;
    margin-top: 40px;
}

.section-btn-container {
    text-align: center;
    margin-top: 50px;
}

/* --- 响应式微调 --- */
@media (max-width: 992px) {
    .mentor-layout {
        grid-template-columns: 1fr;
        padding: 40px;
    }

    .mentor-sidebar {
        position: static;
        text-align: center;
    }

    .mentor-img-placeholder {
        max-width: 250px;
        margin: 0 auto;
    }
}

/* --- 团队页面布局重构 (展示板模式) --- */
.team-page-main {
    background-image: none !important;
    /* 撤销全屏背景 */
}

.team-showcase-board {
    width: 85%;
    /* 考虑到视觉平稳度，设为 85% */
    max-width: 1200px;
    margin: 40px auto;
    background-image: url('photo/photo-wall.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    background-repeat: no-repeat;
    border-radius: 30px;
    padding: 100px 40px;
    /* 从 120px 微调至 100px */
    min-height: 600px;
    /* 从 700px 微调至 600px，约为原高度的 85% */
    box-shadow: 0 40px 100px rgba(0, 0, 0, 0.5),
        inset 0 0 0 1000px rgba(0, 0, 0, 0.2);
    /* 给予照片墙轻微暗色遮罩以突出白卡片 */
    display: flex;
    flex-direction: column;
    justify-content: center;
    /* 垂直居中内部卡片 */
    align-items: center;
}

/* 展示板内的内容容器 */
.team-grade-section {
    width: 100%;
    margin-bottom: 50px;
}

.grade-title {
    font-size: 1.4rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 30px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--accent-blue);
    display: inline-block;
    background: rgba(0, 0, 0, 0.3);
    padding: 5px 20px;
    border-radius: 8px;
}

.member-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 250px));
    gap: 30px;
    justify-content: center;
    width: 100%;
}

.member-card {
    background: #ffffff;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    text-align: center;
    padding-bottom: 20px;
}

.member-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.member-photo-link {
    display: block;
    width: 100%;
    aspect-ratio: 1/1;
    overflow: hidden;
    background: #f0f0f0;
}

.member-photo-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ccc;
    font-size: 0.8rem;
}

.member-name {
    font-size: 1.1rem;
    font-weight: 700;
    color: #1a1a1a;
    margin: 15px 0 5px;
    font-family: 'Outfit', sans-serif;
}

.member-motto {
    font-size: 0.85rem;
    color: #888;
    padding: 0 15px;
    font-style: italic;
    line-height: 1.4;
}

.team-showcase-board .content-placeholder {
    background-color: #ffffff;
    color: #000000;
    border-radius: 20px;
    padding: 35px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    max-width: 600px;
    width: 100%;
}

.team-showcase-board .content-placeholder p {
    color: #333 !important;
    font-size: 1.15rem;
    font-weight: 500;
}

.team-showcase-board .empty-state-icon {
    margin-top: 20px;
    opacity: 0.8 !important;
}

/* --- 科研项目板块 --- */
.projects-section {
    padding: 100px 5%;
}

.projects-list {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-glass);
    border-radius: 30px;
    padding: 40px;
    max-width: 1200px;
    margin: 0 auto;
}

.project-item {
    padding: 20px 0;
    border-bottom: 1px solid var(--border-glass);
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.3s ease;
}

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

.project-item:hover {
    padding-left: 10px;
    background: rgba(255, 255, 255, 0.01);
}

.project-content {
    flex: 1;
}

.project-title {
    font-size: 1.05rem;
    color: var(--text-main);
    font-weight: 500;
}

.project-role {
    margin-left: 20px;
    padding: 4px 12px;
    background: rgba(0, 210, 255, 0.1);
    color: var(--accent-blue);
    border-radius: 8px;
    font-size: 0.8rem;
    font-weight: 600;
    white-space: nowrap;
}

.project-item:hover .project-role {
    background: var(--accent-blue);
    color: #000;
}

/* --- 项目成果页面专用样式 --- */
.research-section-box {
    margin-bottom: 60px;
}

.research-section-title {
    font-size: 1.8rem;
    margin-bottom: 30px;
    color: var(--accent-blue);
    border-bottom: 1px solid var(--border-glass);
    padding-bottom: 10px;
    display: flex;
    align-items: center;
}

.research-section-title::before {
    content: '';
    width: 4px;
    height: 24px;
    background: var(--accent-blue);
    margin-right: 15px;
    border-radius: 2px;
}

.publication-list {
    list-style: none;
    counter-reset: pub-counter;
}

.publication-item {
    position: relative;
    padding-left: 45px;
    margin-bottom: 25px;
    line-height: 1.7;
    font-size: 0.95rem;
    color: var(--text-main);
}

.publication-item::before {
    counter-increment: pub-counter;
    content: "[" counter(pub-counter) "]";
    position: absolute;
    left: 0;
    color: var(--accent-blue);
    font-weight: 700;
}

/* 强调括号内的标注信息 */
.pub-tag {
    color: var(--accent-purple);
    font-weight: 700;
    margin-left: 8px;
}

.patent-list,
.awards-list {
    list-style: none;
}

.patent-item,
.award-item {
    padding: 15px 20px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-glass);
    border-radius: 12px;
    margin-bottom: 15px;
    transition: all 0.3s ease;
}

.patent-item:hover,
.award-item:hover {
    background: rgba(255, 255, 255, 0.04);
    border-color: var(--accent-blue);
    transform: translateX(5px);
}

.award-item strong {
    color: var(--accent-blue);
    display: block;
    margin-bottom: 5px;
}

.awards-group-title {
    font-size: 1.2rem;
    margin: 30px 0 15px;
    color: #fff;
    font-weight: 600;
}

/* --- 团队成员页面手机端深度优化 --- */
@media (max-width: 768px) {
    .team-showcase-board {
        width: 95% !important;
        margin: 20px auto !important;
        padding: 60px 20px !important;
        background-image: none !important;
        /* 移除原生背景以使用伪元素固定法 */
        background-color: #ede2d5 !important;
        /* 浅灰褐色，填补纵向留白 */
        position: relative;
        overflow: visible;
        /* 使用 clip-path 配合 fixed 伪元素实现 iOS 兼容的视差效果 */
        clip-path: inset(0);
        -webkit-clip-path: inset(0);
        box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
    }

    .team-showcase-board::before {
        content: "";
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background-image: url('photo/photo-wall.jpg');
        background-size: 100% auto;
        /* 宽度百分百自适应，完整显示边缘 */
        background-position: center;
        background-repeat: no-repeat;
        z-index: -1;
        pointer-events: none;
        will-change: transform;
    }

    .grade-title {
        font-size: 1.1rem;
        padding: 5px 15px;
    }

    .member-grid {
        grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
        gap: 15px;
    }

    .member-card {
        border-radius: 12px;
    }

    .member-name {
        font-size: 0.95rem;
    }

    .member-motto {
        font-size: 0.75rem;
    }
}

/* --- Team Skybound 专属样式 --- */

/* Hero Section */
.skybound-hero {
    padding: 120px 5% 80px;
    text-align: center;
    background: radial-gradient(circle at center, rgba(157, 80, 187, 0.1) 0%, transparent 70%);
}

.skybound-hero h1 {
    font-size: clamp(2.5rem, 8vw, 4.5rem);
    background: linear-gradient(135deg, #fff 0%, #a5b4fc 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 20px;
}

.skybound-hero .subtitle {
    font-size: 1.5rem;
    color: var(--accent-blue);
    margin-bottom: 30px;
    font-weight: 500;
}

.skybound-hero .description {
    max-width: 800px;
    margin: 0 auto 40px;
    color: var(--text-muted);
    font-size: 1.1rem;
    line-height: 1.8;
}

.cta-group {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

/* Feature Grid (探索方向) */
.skybound-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.skybound-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-glass);
    border-radius: 24px;
    padding: 40px;
    transition: all 0.4s ease;
}

.skybound-card:hover {
    border-color: var(--accent-purple);
    background: rgba(255, 255, 255, 0.05);
    transform: translateY(-10px);
}

.skybound-card h3 {
    font-size: 1.4rem;
    color: var(--accent-blue);
    margin-bottom: 20px;
}

.skybound-card .card-content {
    font-size: 0.95rem;
    color: var(--text-muted);
    margin-bottom: 20px;
}

.skybound-card .keywords {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 20px;
}

.kw-tag {
    font-size: 0.75rem;
    padding: 4px 10px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-glass);
    border-radius: 6px;
    color: var(--text-main);
}

/* Download Section */
.download-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin: 40px 0;
}

.download-card {
    background: linear-gradient(135deg, rgba(255,255,255,0.05) 0%, rgba(255,255,255,0.01) 100%);
    border: 1px solid var(--border-glass);
    border-radius: 16px;
    padding: 25px;
    display: flex;
    align-items: center;
    gap: 20px;
    text-decoration: none;
    transition: all 0.3s ease;
}

.download-card:hover {
    border-color: var(--accent-blue);
    background: rgba(255,255,255,0.08);
}

.download-icon {
    font-size: 2rem;
}

.download-info .file-name {
    display: block;
    color: #fff;
    font-weight: 600;
    margin-bottom: 4px;
}

.download-info .file-meta {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* Global Buttons */
.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 30px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    font-size: 0.95rem;
    border: 1px solid transparent;
}

.btn.secondary {
    background: rgba(255, 255, 255, 0.05);
    color: #fff;
    border: 1px solid var(--border-glass);
    backdrop-filter: blur(10px);
}

.btn.secondary:hover {
    background: var(--accent-blue);
    color: #000;
    border-color: var(--accent-blue);
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0, 210, 255, 0.2);
}

/* Timeline (成长路径) */
.growth-path {
    position: relative;
    padding: 40px 0;
}

.path-step {
    display: grid;
    grid-template-columns: var(--step-col-width, 100px) 1fr;
    gap: 40px;
    margin-bottom: 60px;
    position: relative;
}

.step-number {
    width: var(--step-size, 60px);
    height: var(--step-size, 60px);
    background: var(--bg-card);
    border: 2px solid var(--accent-blue);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--accent-blue);
    z-index: 2;
    justify-self: center; /* Ensure dot is centered in its column */
}

.path-step::after {
    content: '';
    position: absolute;
    left: calc(var(--step-col-width, 100px) / 2 - 1px); /* Centered based on column width */
    top: var(--step-size, 60px);
    width: 2px;
    height: calc(100% + 20px);
    background: linear-gradient(to bottom, var(--accent-blue), transparent);
    z-index: 1;
}

.path-step:last-child::after {
    display: none;
}

.step-content {
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    padding: 30px;
    border-radius: 20px;
}

.step-content h3 {
    margin-bottom: 15px;
    color: #fff;
}

.step-content ul {
    list-style: none;
    padding-left: 0;
}

.step-content li {
    position: relative;
    padding-left: 20px;
    margin-bottom: 10px;
    color: var(--text-muted);
    font-size: 0.95rem;
}

.step-content li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--accent-blue);
}

/* FAQ Section */
.faq-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin-top: 40px;
}

.faq-item {
    background: rgba(255,255,255,0.02);
    border-left: 4px solid var(--accent-purple);
    padding: 25px;
    border-radius: 0 16px 16px 0;
}

.faq-item h4 {
    color: #fff;
    margin-bottom: 10px;
    font-size: 1.1rem;
}

.faq-item p {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.6;
}

@media (max-width: 900px) {
    .faq-grid {
        grid-template-columns: 1fr;
    }
}

/* Recruitment Section */
.recruitment-box {
    background: linear-gradient(135deg, rgba(157, 80, 187, 0.05) 0%, rgba(0, 210, 255, 0.05) 100%);
    border: 1px solid var(--border-glass);
    border-radius: 30px;
    padding: 50px;
    margin: 40px 0;
}

.recruitment-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 50px;
}

.recruit-info h3 {
    font-size: 1.8rem;
    margin-bottom: 20px;
    color: #fff;
}

@media (max-width: 850px) {
    .recruitment-grid {
        grid-template-columns: 1fr;
    }
}