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

body {
    font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans KR', 'Noto Sans SC', sans-serif;
    color: #fff;
    min-height: 100vh;
    overflow-x: hidden;
}

.bg-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.bg-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        135deg,
        rgba(15, 23, 42, 0.85) 0%,
        rgba(30, 41, 59, 0.75) 50%,
        rgba(15, 23, 42, 0.9) 100%
    );
    z-index: 1;
}

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

header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 20px 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 100;
    background: linear-gradient(to bottom, rgba(15, 23, 42, 0.6), transparent);
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: #fff;
    text-decoration: none;
    letter-spacing: -0.5px;
}

.logo span {
    color: #38bdf8;
}

.lang-switcher {
    display: flex;
    gap: 8px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 50px;
    padding: 6px;
    border: 1px solid rgba(255, 255, 255, 0.15);
}

.lang-btn {
    padding: 8px 16px;
    border: none;
    background: transparent;
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.85rem;
    font-weight: 600;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: inherit;
}

.lang-btn:hover {
    color: #fff;
    background: rgba(255, 255, 255, 0.1);
}

.lang-btn.active {
    background: #38bdf8;
    color: #0f172a;
}

main {
    position: relative;
    z-index: 1;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 120px 40px 80px;
    max-width: 1200px;
    margin: 0 auto;
}

.hero {
    text-align: center;
    margin-bottom: 60px;
}

.hero-badge {
    display: inline-block;
    padding: 8px 20px;
    background: rgba(56, 189, 248, 0.15);
    border: 1px solid rgba(56, 189, 248, 0.3);
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    color: #38bdf8;
    margin-bottom: 24px;
    letter-spacing: 0.5px;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
    letter-spacing: -1px;
}

.hero h1 .highlight {
    color: #38bdf8;
}

.hero p {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.75);
    max-width: 600px;
    margin: 0 auto 40px;
    line-height: 1.7;
}

.cta-group {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn-primary {
    padding: 16px 40px;
    background: linear-gradient(135deg, #38bdf8, #0ea5e9);
    color: #fff;
    font-size: 1.05rem;
    font-weight: 700;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    box-shadow: 0 10px 30px rgba(56, 189, 248, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 40px rgba(56, 189, 248, 0.4);
}

.btn-secondary {
    padding: 16px 40px;
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
    font-size: 1.05rem;
    font-weight: 600;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin-top: 40px;
}

.feature-card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 32px;
    transition: all 0.3s ease;
}

.feature-card:hover {
    background: rgba(255, 255, 255, 0.08);
    transform: translateY(-5px);
    border-color: rgba(56, 189, 248, 0.3);
}

.feature-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, rgba(56, 189, 248, 0.2), rgba(56, 189, 248, 0.05));
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 20px;
    border: 1px solid rgba(56, 189, 248, 0.2);
}

.feature-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.feature-card p {
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.65);
    line-height: 1.6;
}

.stats {
    display: flex;
    justify-content: center;
    gap: 60px;
    margin-top: 60px;
    flex-wrap: wrap;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: #38bdf8;
    display: block;
}

.stat-label {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.6);
    margin-top: 4px;
}

footer {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: 30px;
    color: rgba(255, 255, 255, 0.4);
    font-size: 0.85rem;
}

@media (max-width: 768px) {
    header {
        padding: 16px 20px;
    }

    .hero h1 {
        font-size: 2.2rem;
    }

    .hero p {
        font-size: 1rem;
    }

    main {
        padding: 100px 20px 60px;
    }

    .stats {
        gap: 30px;
    }

    .stat-number {
        font-size: 2rem;
    }
}