@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Noto+Serif+SC:wght@600;700;900&family=Noto+Sans+SC:wght@300;400;500;700&display=swap');

:root {
    --color-primary: #0F172A; /* Prussian Blue */
    --color-secondary: #C5A059; /* Champagne Gold */
    --color-text: #334155;
    --color-bg: #F8FAFC;
}

body {
    font-family: 'Inter', 'Noto Sans SC', sans-serif;
    color: var(--color-text);
    background-color: var(--color-bg);
}

h1, h2, h3, .font-serif {
    font-family: 'Noto Serif SC', serif;
}

/* Animations */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease-out;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* Custom Utilities */
.text-gold { color: var(--color-secondary); }
.bg-gold { background-color: var(--color-secondary); }
.border-gold { border-color: var(--color-secondary); }

.glass-nav {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.hero-gradient-overlay {
    background: linear-gradient(to right, rgba(15, 23, 42, 0.85) 0%, rgba(15, 23, 42, 0.6) 50%, rgba(15, 23, 42, 0.4) 100%);
}

/* 图片区域文字可读性增强 */
.text-on-image {
    text-shadow: 0 2px 8px rgba(0,0,0,0.6), 0 0 24px rgba(0,0,0,0.4);
}
.text-on-image-subtle {
    text-shadow: 0 1px 4px rgba(0,0,0,0.5), 0 0 12px rgba(0,0,0,0.3);
}

/* Card Hover Effects */
.hover-lift {
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.3s ease;
}

.hover-lift:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

/* Golden underline animation */
.link-underline {
    position: relative;
    text-decoration: none;
}

.link-underline::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -2px;
    left: 0;
    background-color: var(--color-secondary);
    transition: width 0.3s ease;
}

.link-underline:hover::after {
    width: 100%;
}

@keyframes slow-zoom {
    from { transform: scale(1); }
    to { transform: scale(1.1); }
}

@keyframes gradient-xy {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.animate-gradient-xy {
    background-size: 400% 400%;
    animation: gradient-xy 15s ease infinite;
}

.animate-slow-zoom {
    animation: slow-zoom 20s infinite alternate ease-in-out;
}