:root {
    --bg-color: #0f172a;
    --card-bg: rgba(30, 41, 59, 0.7);
    --accent-blue: #3b82f6;
    --accent-emerald: #10b981;
    --text-main: #f1f5f9;
    --text-dim: #94a3b8;
    --glass-border: rgba(255, 255, 255, 0.1);
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    font-family: 'Noto Sans KR', 'Inter', sans-serif;
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

.background-glow {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 50% 50%, #1e293b 0%, #0f172a 100%);
    z-index: -1;
}

.background-glow::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 30% 30%, rgba(59, 130, 246, 0.05) 0%, transparent 50%),
                radial-gradient(circle at 70% 70%, rgba(16, 185, 129, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 60px 24px;
    animation: fadeIn 1s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.hero {
    text-align: center;
    margin-bottom: 80px;
}

.logo-container {
    margin-bottom: 24px;
}

.logo {
    width: 80px;
    height: 80px;
    object-contain;
    filter: drop-shadow(0 0 20px rgba(59, 130, 246, 0.3));
}

.main-title {
    font-size: 3rem;
    font-weight: 900;
    letter-spacing: -0.05em;
    line-height: 1.1;
    margin-bottom: 16px;
}

.accent {
    background: linear-gradient(90deg, var(--accent-blue), var(--accent-emerald));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.subtitle {
    font-size: 1.2rem;
    color: var(--text-dim);
    font-weight: 400;
}

.content-card {
    background: var(--card-bg);
    backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    padding: 40px;
    border-radius: 32px;
    margin-bottom: 40px;
    position: relative;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s ease;
}

.content-card:hover {
    transform: translateY(-5px);
    border-color: rgba(59, 130, 246, 0.3);
}

.card-icon {
    font-size: 2rem;
    margin-bottom: 20px;
}

h2 {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 24px;
    letter-spacing: -0.02em;
}

.highlight {
    color: var(--accent-blue);
}

p {
    margin-bottom: 20px;
    color: var(--text-dim);
    font-size: 1.1rem;
}

strong {
    color: var(--text-main);
}

ul {
    list-style: none;
}

li {
    margin-bottom: 24px;
    padding-left: 20px;
    border-left: 3px solid var(--accent-blue);
}

.tier-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-top: 30px;
}

.tier-card {
    background: rgba(15, 23, 42, 0.5);
    padding: 30px;
    border-radius: 20px;
    border: 1px solid var(--glass-border);
    text-align: center;
}

.tier-label {
    font-size: 10px;
    font-weight: 900;
    letter-spacing: 0.2em;
    color: var(--text-dim);
    margin-bottom: 12px;
}

.tier-card h3 {
    font-size: 1.2rem;
    margin-bottom: 16px;
}

.tier-card.active {
    border-color: var(--accent-blue);
    background: rgba(59, 130, 246, 0.05);
}

.tier-card.vip {
    border-color: var(--accent-emerald);
    background: rgba(16, 185, 129, 0.05);
}

.num {
    font-weight: 900;
    color: var(--accent-blue);
}

.vip .num {
    color: var(--accent-emerald);
}

.footer-note {
    text-align: center;
    padding-top: 40px;
    margin-top: 60px;
    border-top: 1px solid var(--glass-border);
}

.footer-note p {
    font-style: italic;
    color: var(--text-main);
    margin-bottom: 40px;
}

.actions {
    display: flex;
    justify-content: center;
}

.btn-skip {
    position: fixed;
    right: 30px;
    top: 50%;
    transform: translateY(-50%) rotate(-90deg);
    transform-origin: right center;
    background: var(--accent-blue);
    color: white;
    padding: 12px 24px;
    border-radius: 100px 100px 0 0;
    font-weight: 900;
    font-size: 11px;
    letter-spacing: 0.2em;
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 9999;
    box-shadow: 0 10px 30px rgba(59, 130, 246, 0.4);
    border: none;
    white-space: nowrap;
}

.btn-skip:hover {
    padding-right: 40px;
    background: white;
    color: black;
    box-shadow: 0 0 40px rgba(255, 255, 255, 0.5);
}

@media (max-width: 600px) {
    .main-title { font-size: 2rem; }
    .content-card { padding: 30px; }
}