:root {
    --primary: #667eea;
    --primary-dark: #764ba2;
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --secondary-gradient: linear-gradient(135deg, #FFA240 0%, #FFD41D 100%);
    --accent: #6c63ff;
    --bg-light: #f8f9ff;
    --bg-white: #ffffff;
    --text-main: #333333;
    --text-muted: #666666;
    --shadow-sm: 0 4px 6px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 10px 20px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 20px 40px rgba(102, 126, 234, 0.15);
    --radius-lg: 30px;
    --radius-md: 20px;
    --radius-sm: 12px;
    --max-width: 1000px;
}

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

body {
    font-family: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: var(--text-main);
    line-height: 1.6;
    background-color: var(--bg-light);
    overflow-x: hidden;
}

/* Layout */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 40px 20px;
}

/* Typography */
h1,
h2,
h3,
h4 {
    margin-bottom: 20px;
    font-weight: 700;
}

h1 {
    font-size: 1.8em;
}

h2 {
    font-size: 1.6em;
    color: var(--primary);
}

h3 {
    font-size: 1.2em;
}

/* Hero Section */
.hero {
    background: var(--primary-gradient);
    color: white;
    padding: 80px 20px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before,
.hero::after {
    content: '';
    position: absolute;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
}

.hero::before {
    width: 400px;
    height: 400px;
    top: -200px;
    right: -100px;
}

.hero::after {
    width: 300px;
    height: 300px;
    bottom: -150px;
    left: -50px;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
}

.hero h1 {
    color: white;
    margin-bottom: 15px;
}

.hero .subtitle {
    font-size: 1.25em;
    opacity: 0.9;
    margin-bottom: 30px;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 16px 40px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1em;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: white;
    color: var(--primary);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
}

/* Cards & Sections */
.plancard {
    background: var(--secondary-gradient);
    border-radius: var(--radius-md);
    padding: 30px;
    box-shadow: var(--shadow-md);
    transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
    border: 1px solid rgba(0, 0, 0, 0.03);
    height: 100%;
}


.card {
    background: var(--bg-white);
    border-radius: var(--radius-md);
    padding: 30px;
    box-shadow: var(--shadow-md);
    transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
    border: 1px solid rgba(0, 0, 0, 0.03);
    height: 100%;
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(102, 126, 234, 0.1);
}

.section {
    background: var(--bg-white);
    border-radius: var(--radius-md);
    padding: 40px;
    margin-bottom: 30px;
    box-shadow: var(--shadow-sm);
}

/* Premium Feature Cards */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.feature-card {
    background: var(--bg-white);
    border-radius: var(--radius-md);
    padding: 40px 30px;
    text-align: center;
    transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
    border: 1px solid rgba(0, 0, 0, 0.03);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.04);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(102, 126, 234, 0.12);
}

.icon-box {
    width: 70px;
    height: 70px;
    background: var(--bg-light);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.0em;
    margin: 0 auto;
    transition: all 0.3s ease;
}

.feature-card:hover .icon-box {
    background: var(--primary-gradient);
    transform: scale(1.1) rotate(5deg);
}

.feature-card:hover h3 {
    color: var(--primary);
}

/* Check List Style */
.check-list {
    list-style: none;
    padding: 0;
}

.check-list li {
    position: relative;
    padding-left: 28px;
    margin-bottom: 15px;
    transition: transform 0.2s ease;
    color: var(--text-muted);
}

.check-list li:hover {
    transform: translateX(5px);
    color: var(--text-main);
}

.check-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary);
    font-weight: bold;
}

/* Grids */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
    margin-bottom: 40px;
}

/* Form Elements */
.input-group {
    display: flex;
    gap: 12px;
    margin-bottom: 20px;
}

input[type="date"],
input[type="text"] {
    flex: 1;
    padding: 14px;
    border-radius: var(--radius-sm);
    border: 1px solid #ddd;
    font-size: 1em;
    outline: none;
}

input:focus {
    border-color: var(--primary);
}

/* Banner */
.banner-container {
    text-align: center;
    margin: 40px auto;
    max-width: 800px;
}

.banner-img {
    width: 100%;
    height: auto;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-md);
}

/* Notice & Policy Styles */
.notice-date {
    font-size: 0.9em;
    color: var(--text-muted);
    margin-bottom: 10px;
}

.notice-date {
    font-size: 0.9em;
    color: var(--text-muted);
    margin-bottom: 10px;
}

.divider {
    height: 1px;
    background: #eee;
    margin: 20px 0;
}

/* Footer */
footer {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
    border-top: 1px solid #eee;
    background: white;
}

footer a {
    color: var(--primary);
    text-decoration: none;
}

footer a:hover {
    text-decoration: underline;
}

/* Responsive */
@media (max-width: 768px) {
    .hero {
        padding: 60px 20px;
    }

    h1 {
        font-size: 1.8em;
    }

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

    .section {
        padding: 25px;
    }
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

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

.fade-in {
    animation: fadeIn 0.6s ease-out forwards;
}