/* 自定义样式 */
.hover-shadow {
    transition: box-shadow 0.3s ease;
}

.hover-shadow:hover {
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
    transform: translateY(-2px);
}

.card {
    border: none;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.navbar-brand {
    font-weight: bold;
    font-size: 1.5rem;
}

.breadcrumb {
    background-color: transparent;
    padding: 0;
}

.list-group-item-action:hover {
    background-color: #f8f9fa;
}

#promo-hero {
    position: relative;
}

.promo-hero {
    position: relative;
    border-radius: 18px;
    padding: 28px 28px 20px;
    overflow: hidden;
    color: #fff;
    background: radial-gradient(1200px 400px at 10% -10%, rgba(13, 110, 253, 0.35), transparent),
                linear-gradient(135deg, #0d6efd, #4c8bff 40%, #6f6bff);
    box-shadow: 0 12px 30px rgba(13, 110, 253, 0.25);
    animation: promoFloat 6s ease-in-out infinite;
}

.promo-glow {
    position: absolute;
    inset: -30%;
    background: conic-gradient(from 120deg, rgba(255, 255, 255, 0.2), transparent 35%, rgba(255, 255, 255, 0.15), transparent 70%);
    animation: promoGlow 8s linear infinite;
    pointer-events: none;
}

.promo-content {
    position: relative;
    z-index: 1;
    text-align: center;
}

.promo-badge {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 999px;
    font-weight: 600;
    letter-spacing: 0.08em;
    background: rgba(255, 255, 255, 0.18);
    border: 1px solid rgba(255, 255, 255, 0.3);
    margin-bottom: 10px;
}

.promo-title {
    font-size: 1.6rem;
    font-weight: 700;
    margin-bottom: 6px;
}

.promo-subtitle {
    font-size: 1rem;
    margin-bottom: 18px;
    color: rgba(255, 255, 255, 0.9);
}

.promo-stats {
    display: grid;
    gap: 12px;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
}

.promo-stat {
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    padding: 12px 10px;
    backdrop-filter: blur(6px);
}

.promo-stat-value {
    font-size: 1.4rem;
    font-weight: 700;
    letter-spacing: 0.02em;
}

.promo-stat-label {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.85);
}

@keyframes promoGlow {
    0% { transform: rotate(0deg); opacity: 0.6; }
    50% { opacity: 0.9; }
    100% { transform: rotate(360deg); opacity: 0.6; }
}

@keyframes promoFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-6px); }
}

#pdf-viewer {
    background-color: #525252;
}

#pdf-viewer canvas {
    display: block;
    margin: 0 auto;
}