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

body {
    font-family: 'Microsoft JhengHei', 'PingFang TC', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    padding: 20px 0;
    z-index: 1000;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    background: rgba(15, 15, 35, 0.2);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.navbar.scrolled {
    background: rgba(0, 93, 145, 0.9);
}

.nav-container {
    max-width: 1700px;
    width: 100%;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 40px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 15px;
    text-decoration: none;
    transition: all 0.3s ease;
}

.logo:hover {
    transform: scale(1.05);
}

.logo-img {
    height: 60px;
    width: auto;
    object-fit: contain;
    filter: brightness(1.2);
}

.logo-icon {
    display: inline-block;
    width: 200px;
    height: 60px;
    background-image: url('../img/toplogo.png');
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
    filter: brightness(1.2);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 40px;
    align-items: center;
}

.nav-menu a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    font-size: 1.1rem;
    position: relative;
    transition: all 0.3s ease;
    padding: 10px 0;
}

.nav-menu a::before {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 0;
    left: 0;
    background: linear-gradient(90deg, #00d4ff, #4ade80);
    transition: width 0.3s ease;
}

.nav-menu a:hover::before {
    width: 100%;
}

.nav-menu a:hover {
    color: #00d4ff;
    transform: translateY(-2px);
}

/* 語言選擇器 */
.language-selector {
    position: relative;
    display: inline-block;
}

.language-btn {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: white;
    padding: 10px 20px;
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
}

.language-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.language-btn::after {
    content: '▼';
    font-size: 0.6rem;
}

.language-btn.active::after {
    transform: rotate(180deg);
}

.language-dropdown {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(-10px);
    background: rgba(20, 20, 20, 0.95);
    backdrop-filter: blur(20px);
    border-radius: 15px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    min-width: 130px;
    opacity: 0;
    text-align: center;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 1000;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.language-dropdown.active {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.language-dropdown a {
    display: block;
    color: white;
    text-decoration: none;
    padding: 12px 20px;
    transition: all 0.3s ease;
    font-size: 0.9rem;
}

.language-dropdown a:hover {
    background: rgba(0, 212, 255, 0.1);
    color: #00d4ff;
}

.language-dropdown a.active {
    color: #00d4ff;
}

/* 漢堡選單 */
.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: 8px;
    z-index: 1001;
    background: none;
    border: none;
    transition: all 0.3s ease;
}

.hamburger-line {
    height: 2px;
    background: white;
    margin: 3px 0;
    transition: all 0.3s ease;
    border-radius: 2px;
}

.hamburger-line-long {
    width: 25px;
}

.hamburger-line-short {
    width: 18px;
    margin-left: auto;
}

.hamburger.active .hamburger-line-long {
    transform: rotate(45deg) translate(6px, 6px);
}

.hamburger.active .hamburger-line-short {
    transform: rotate(-45deg);
}

/* 主視覺區域 */
.hero-section {
    height: 80vh;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: linear-gradient(135deg, #000085 0%, #1a1a2e 50%, #000028 100%);
    padding-top: 100px;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('../img/science2.jpg') top/cover;
    opacity: 0.5;
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: white;
    max-width: 1000px;
    padding: 0 40px;
}

.hero-title {
    font-size: 4rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 30px;
    background: linear-gradient(135deg, #00d4ff, #4ade80);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 1s ease;
}

.hero-subtitle {
    font-size: 1.3rem;
    opacity: 0.9;
    font-weight: 300;
    animation: fadeInUp 1.2s ease;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.container {
    max-width: 1400px;
    width: 100%;
    margin: 0 auto;
    padding: 0 40px;
}

/* 统一 Section 样式 */
.section {
    padding: 100px 0;
}

.section-white {
    background: #faf9f7;
}

.section-gray {
    background: #f5f4f2;
}

/* 介紹區域 */
.intro-section {
    padding: 100px 0;
    background: #f5f4f2;
}

.intro-content {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

/* 左右布局 */
.modern-split-section {
    padding: 100px 0;
}

.modern-split-section.section-white {
    background: #faf9f7;
}

.modern-split-section.section-gray {
    background: #f5f4f2;
}

.modern-split-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    max-width: 1300px;
    margin: 0 auto;
}

.modern-split-section.reverse .split-text {
    order: 1;
}

.modern-split-section.reverse .split-video {
    order: 2;
}

.split-video {
    position: relative;
}

.video-wrapper {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    background: #000;
    aspect-ratio: 16 / 9;
}

.video-wrapper video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.split-text {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.modern-text {
    font-size: 1.2rem;
    line-height: 2;
    color: #555;
    text-align: justify;
    margin: 0;
    padding: 40px;
    background: #faf9f7;
    border-radius: 20px;
    border: 1px solid #e5e7eb;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    position: relative;
    overflow: hidden;
}

.modern-text::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: url('../img/logo.png');
    background-size: contain;
    background-position: center center;
    background-repeat: no-repeat;
    opacity: 0.15;
    z-index: 0;
    pointer-events: none;
}

.section-gray .modern-text {
    background: #faf9f7;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 30px;
    color: #1e3c72;
    text-align: center;
}

.intro-text {
    font-size: 1.2rem;
    color: #555;
    line-height: 1.8;
    margin-bottom: 40px;
    text-align: left;
}

.divider {
    width: 100px;
    height: 4px;
    background: linear-gradient(90deg, #00d4ff, #4ade80);
    margin: 40px auto;
    border-radius: 2px;
}

/* 團隊區域 */
.team-section {
    padding: 100px 0;
    background:#faf9f7;
    position: relative;
}

.team-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: url('../img/logo.png');
    background-size: 80%;
    background-position: center center;
    background-repeat: no-repeat;
    opacity: 0.15;
    z-index: 0;
    pointer-events: none;
}

.team-section .container {
    position: relative;
    z-index: 1;
}

.team-list {
    max-width: 1200px;
    margin: 60px auto 0;
}

.team-member {
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: 60px;
    padding: 40px 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
    align-items: center;
}

.team-member:last-child {
    border-bottom: none;
}

.team-member:nth-child(even) {
    grid-template-columns: 1fr 250px;
}

.team-member:nth-child(even) .team-image {
    order: 2;
}

.team-member:nth-child(even) .team-info {
    order: 1;
    text-align: right;
}

.team-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.team-image img {
    width: 240px;
    height: 240px;
    object-fit: cover;
    object-position: top;
}

.team-info {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.team-info h3 {
    font-size: 2rem;
    color: #1e3c72;
    margin-bottom: 15px;
    font-weight: 700;
}

.team-info .education {
    font-size: 1.2rem;
    color: #00d4ff;
    font-weight: 600;
    margin-bottom: 20px;
    line-height: 1.6;
    padding: 12px 20px;
    background: rgba(0, 212, 255, 0.08);
    border-radius: 10px;
    display: inline-block;
    border-left: 4px solid #00d4ff;
}

.team-member:nth-child(even) .team-info .education {
    border-left: none;
    border-right: 4px solid #00d4ff;
}

.team-info .expertise {
    font-size: 1.1rem;
    color: #555;
    line-height: 1.8;
}

/* 視頻佔位符 */
.video-placeholder {
    width: 100%;
    height: 400px;
    background: #000;
    border-radius: 20px;
    margin: 40px 0;
    overflow: hidden;
}

.video-placeholder video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 20px;
}

/* 內容區域 */
.content-section {
    padding: 100px 0;
    background: #f5f4f2;
}

.content-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    margin-top: 60px;
}

.content-text h3 {
    font-size: 2rem;
    color: #1e3c72;
    margin-bottom: 20px;
    font-weight: 700;
}

.content-text p {
    font-size: 1.2rem;
    color: #555;
    line-height: 1.8;
    margin-bottom: 20px;
}

.content-image {
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.2);
}

.content-image img {
    width: 100%;
    height: auto;
    display: block;
}

/* 特色區域 */
.feature-section {
    padding: 100px 0;
    background: #faf9f7;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    margin-top: 60px;
}

.feature-card {
    background: #f5f4f2;
    padding: 40px 30px;
    border-radius: 15px;
    border: 1px solid #bed4ff;
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
}


.feature-card h4 {
    font-size: 1.4rem;
    color: #1e3c72;
    margin-bottom: 20px;
    font-weight: 700;
}

.feature-card p {
    color: #666;
    line-height: 1.8;
    font-size: 1.1rem;
}

/* 引用區域 */
.quote-section {
    padding: 100px 0;
    background: linear-gradient(135deg, #1a1a2e 0%, #2a2a4e 100%);
    color: white;
    text-align: center;
}

.quote-text {
    font-size: 1.4rem;
    font-style: italic;
    color: #4ade80;
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.8;
}


.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* 手機響應式 */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .nav-container {
        padding: 0 20px;
    }

    /* 手機版導航菜單 */
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 100%;
        height: 100vh;
        background: url('../img/leaf.jpg') center/cover no-repeat;
        flex-direction: column;
        justify-content: center;
        text-align: center;
        align-items: center;
        transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        z-index: 1000;
    }

    .nav-menu.active {
        right: 0;
    }

    .nav-menu a {
        color: white;
        text-decoration: none;
        font-size: 1.5rem;
        font-weight: 600;
        max-width: 300px;
        transition: all 0.3s ease;
        position: relative;
        display: block;
        padding: 15px 40px;
        border-radius: 60px;
        background: rgba(255, 255, 255, 0.05);
        backdrop-filter: blur(10px);
        border: 1px solid rgba(255, 255, 255, 0.1);
    }

    .nav-menu a:hover {
        color: #535353;
        transform: translateY(-5px) scale(1.05);
        background: rgb(241, 253, 255);
    }

    .nav-menu a::before {
        display: none;
    }

    .logo-img {
        height: 40px;
    }

    .logo-icon {
        width: 130px;
        height: 40px;
    }
    .hero-section {
        height: 70vh;
    }
    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .team-section::before {
        display: none;
    }

    .team-member {
        grid-template-columns: 1fr !important;
        gap: 30px;
        padding: 30px 0;
        text-align: center;
    }

    .team-member:nth-child(even) {
        grid-template-columns: 1fr !important;
    }

    .team-member:nth-child(even) .team-info {
        text-align: center !important;
        order: 2 !important;
    }

    .team-member:nth-child(even) .team-image {
        order: 1 !important;
    }

    .team-image img {
        width: 180px;
        height: 180px;
        object-position: top;
    }

    .team-info h3 {
        font-size: 1.5rem;
    }

    .team-info .education {
        font-size: 1.1rem;
        border-left: none !important;
        border-right: none !important;
        border-top: 3px solid #00d4ff;
        border-bottom: 3px solid #00d4ff;
    }

    .content-grid {
        grid-template-columns: 1fr;
    }

    .feature-grid {
        grid-template-columns: 1fr;
    }


    .container {
        padding: 0 20px;
    }

    .video-placeholder {
        height: 250px;
    }

    .video-placeholder video {
        object-fit: contain;
    }

    /* 现代化左右布局 - 移动端 */
    .modern-split-section {
        padding: 60px 0;
    }

    .modern-split-content {
        grid-template-columns: 1fr !important;
        gap: 30px;
    }

    .modern-split-section.reverse .split-text,
    .modern-split-section.reverse .split-video {
        order: 0 !important;
    }

    .split-video {
        order: 1;
    }

    .split-text {
        order: 2;
    }

    .modern-text {
        font-size: 1.1rem;
        line-height: 1.9;
        padding: 30px 20px;
        text-align: left;
    }
}