:root {
    --primary-color: #d4af37; /* 金色 */
    --text-color: #ffffff;
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    --blur-amount: 12px;
}

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

body {
    font-family: 'Noto Sans SC', sans-serif;
    color: var(--text-color);
    background-color: #111; /* Fallback */
    overflow-x: hidden;
    line-height: 1.6;
    font-weight: 300; /* 调整正文字重，使其更轻盈 */
}

h1, h2, h3, .section-title, .logo {
    font-family: 'Montserrat', 'Noto Sans SC', sans-serif; /* 标题和Logo优先使用 Montserrat */
    font-weight: 700; /* 加粗标题 */
}

.hero-content h1 {
    font-family: 'Playfair Display', 'Montserrat', 'Noto Sans SC', serif; /* 主标题使用Playfair Display增加艺术感 */
}


/* --- Video Background --- */
.video-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -10;
    overflow: hidden;
    background: linear-gradient(45deg, #1a1a2e, #16213e, #0f3460); /* Fallback Gradient */
    background-size: 400% 400%;
    animation: gradientBG 15s ease infinite;
}

@keyframes gradientBG {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

#bgVideo {
    min-width: 100%;
    min-height: 100%;
    width: auto;
    height: auto;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    object-fit: cover;
    opacity: 0.6; /* 降低视频亮度 */
}

.video-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4); /* 深色遮罩增强文字可读性 */
    z-index: -5;
}

/* --- Container --- */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* --- Glass Component --- */
.glass-card, .glass-nav, .glass-footer {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--blur-amount));
    -webkit-backdrop-filter: blur(var(--blur-amount));
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    box-shadow: var(--glass-shadow);
}

/* --- Navigation --- */
.glass-nav {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    width: 90%;
    max-width: 1200px;
    z-index: 100;
    padding: 15px 30px;
    border-radius: 50px; /* Pill shape for Nav */
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 2px;
    color: #fff;
}

.logo span {
    color: var(--primary-color);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-links a {
    text-decoration: none;
    color: #fff;
    font-weight: 500;
    transition: color 0.3s;
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.nav-links a:hover {
    color: var(--primary-color);
}

.mobile-menu-btn {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
}

/* --- Hero Section --- */
.hero-section {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding-top: 80px;
}

.hero-content h1 {
    font-size: 4rem;
    margin-bottom: 20px;
    line-height: 1.2;
    text-shadow: 0 4px 10px rgba(0,0,0,0.5);
}

.subtitle {
    font-size: 1.5rem;
    margin-bottom: 40px;
    opacity: 0.9;
    font-weight: 300;
}

.cta-button {
    display: inline-block;
    padding: 15px 40px;
    background: linear-gradient(90deg, #fbc6b0, #ed8f78); /* 偏暖的玫瑰金渐变 */
    color: #fff;
    text-decoration: none;
    border-radius: 30px;
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 2px;
    transition: transform 0.3s, box-shadow 0.3s;
    border: none;
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(251, 198, 176, 0.4); /* 匹配渐变起点的阴影 */
}

/* --- Sections --- */
.section-padding {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 60px;
    position: relative;
    display: inline-block;
    width: 100%;
}

.full-width {
    padding: 40px;
    text-align: center;
}

.full-width h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
    color: var(--primary-color);
}

.full-width p {
    font-size: 1.1rem;
    max-width: 800px;
    margin: 0 auto;
}

/* --- Grid Layout for Cards --- */
.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.feature-card {
    padding: 40px 25px;
    text-align: center;
    transition: transform 0.3s, background 0.3s;
}

.feature-card:hover {
    transform: translateY(-10px);
    background: rgba(255, 255, 255, 0.1);
}

.icon-box {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.feature-card h3 {
    margin-bottom: 15px;
    font-size: 1.5rem;
}

.feature-card p {
    font-size: 0.95rem;
    opacity: 0.8;
}

/* --- Vision --- */
.vision-card {
    padding: 60px;
    border: 1px solid var(--primary-color); /* Elegant border */
    background: rgba(0, 0, 0, 0.4);
}

.vision-icon {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.vision-text {
    font-size: 1.5rem;
    font-family: 'Playfair Display', serif;
    font-style: italic;
    margin-top: 20px;
}

/* --- Footer --- */
.glass-footer {
    margin-top: 50px;
    padding: 40px 0;
    text-align: center;
    border-radius: 16px 16px 0 0;
    border-bottom: none;
}

.footer-logo {
    font-size: 1.5rem;
    font-weight: bold;
    margin-bottom: 10px;
    color: var(--primary-color);
}

.social-links {
    margin: 20px 0;
}

.social-links a {
    color: #fff;
    font-size: 1.2rem;
    margin: 0 10px;
    transition: color 0.3s;
}

.social-links a:hover {
    color: var(--primary-color);
}

.copyright {
    font-size: 0.8rem;
    opacity: 0.6;
}

/* --- Animations --- */
.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 1s forwards;
}

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

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

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

.delay-1 { animation-delay: 0.3s; }
.delay-2 { animation-delay: 0.6s; }

/* --- Responsive Design --- */
@media (max-width: 768px) {
    .glass-nav {
        width: 100%;
        top: 0;
        border-radius: 0;
        padding: 15px 20px;
    }

    .nav-links {
        display: none; /* Hide for now, can implement toggle */
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: rgba(0, 0, 0, 0.9);
        backdrop-filter: blur(20px);
        padding: 20px;
        text-align: center;
    }
    
    .nav-links.active {
        display: flex;
    }

    .mobile-menu-btn {
        display: block;
    }

    .hero-content h1 {
        font-size: 2.5rem;
    }

    .grid-3 {
        grid-template-columns: 1fr;
    }
    
    .subtitle {
        font-size: 1.1rem;
    }
}