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

body {
    font-family: 'Noto Sans SC', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

header {
    background-color: #8C0000;
    color: white;
    padding: 20px 0;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

header h1 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 20px;
    font-weight: 700;
}

nav ul {
    display: flex;
    justify-content: center;
    list-style: none;
    flex-wrap: wrap;
}

nav ul li {
    margin: 0 15px;
    position: relative;
}

nav ul li a {
    color: white;
    text-decoration: none;
    font-size: 1.1rem;
    padding: 8px 12px;
    border-radius: 4px;
    transition: background-color 0.3s ease;
}

nav ul li a:hover {
    background-color: rgba(255,255,255,0.1);
}

.dropdown-content {
    display: none;
    position: absolute;
    background-color: #8C0000;
    min-width: 200px;
    box-shadow: 0 8px 16px rgba(0,0,0,0.2);
    z-index: 1000;
    border-radius: 4px;
    top: 100%;
    left: 0;
    margin-top: 0;
    padding-top: 5px;
    padding-bottom: 5px;
}

.dropdown-content li {
    margin: 0;
    width: 100%;
}

.dropdown-content li a {
    display: block;
    padding: 10px 15px;
    text-align: left;
    border-radius: 0;
}

.dropdown:hover .dropdown-content,
.dropdown-content:hover {
    display: block;
}

.hero {
    color: white;
    text-align: center;
    padding: 100px 0;
    margin-bottom: 40px;
    position: relative;
    overflow: hidden;
}

.slider {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1s ease-in-out;
}

.slide.active {
    opacity: 1;
}

.slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(rgba(0,0,0,0.5), rgba(0,0,0,0.5));
    z-index: 1;
}

.hero .container {
    position: relative;
    z-index: 2;
}

.slider {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.prev-btn, .next-btn {
    background-color: rgba(255,255,255,0.3);
    color: white;
    border: none;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    font-size: 24px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    z-index: 10;
    opacity: 0;
    visibility: hidden;
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
}

.hero:hover .prev-btn,
.hero:hover .next-btn {
    opacity: 1;
    visibility: visible;
}

.prev-btn {
    left: 20px;
}

.next-btn {
    right: 20px;
}

.prev-btn:hover, .next-btn:hover {
    background-color: rgba(255,255,255,0.5);
    transform: scale(1.1);
}

.slider-controls {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 3;
}

.slide-indicators {
    display: flex;
    gap: 10px;
}

.indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: rgba(255,255,255,0.5);
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.indicator.active {
    background-color: white;
}

.indicator:hover {
    background-color: rgba(255,255,255,0.8);
}

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

.hero h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
    font-weight: 600;
}

.hero p {
    font-size: 1.2rem;
    max-width: 600px;
    margin: 0 auto;
}

.columns {
    padding: 40px 0;
}

.column {
    background-color: white;
    border-radius: 8px;
    padding: 30px;
    margin-bottom: 30px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.column:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 20px rgba(0,0,0,0.15);
}

.column h3 {
    font-size: 1.8rem;
    margin-bottom: 20px;
    color: #2c3e50;
    border-bottom: 3px solid #3498db;
    padding-bottom: 10px;
}

.sub-column {
    margin-bottom: 25px;
}

.sub-column h4 {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: #34495e;
}

.sub-column ul {
    list-style: none;
    padding-left: 20px;
    margin: 0;
}

.sub-column ul li {
    margin-bottom: 10px;
    position: relative;
}

.sub-column ul li:before {
    content: '▸';
    position: absolute;
    left: -20px;
    color: #3498db;
}

.sub-column ul li a {
    color: #3498db;
    text-decoration: none;
    transition: color 0.3s ease;
}

.sub-column ul li a:hover {
    color: #2980b9;
    text-decoration: underline;
}

footer {
    background-color: #8C0000;
    color: white;
    text-align: center;
    padding: 30px 0;
    margin-top: 60px;
}

footer p {
    font-size: 1rem;
}

@media (min-width: 768px) {
    .columns .container {
        display: flex;
        gap: 30px;
    }
    
    .column {
        flex: 1;
        margin-bottom: 0;
    }
}

@media (max-width: 767px) {
    header h1 {
        font-size: 2rem;
    }
    
    .hero h2 {
        font-size: 2rem;
    }
    
    .column h3 {
        font-size: 1.5rem;
    }
    
    .sub-column h4 {
        font-size: 1.1rem;
    }
}