/* Reset & Base Styles */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Plus Jakarta Sans', 'Noto Sans KR', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: #FFFDF7; /* Warm Glow Cream Background */
    color: #1A1A1A;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Header Navigation */
.header {
    padding: 24px 0;
    position: sticky;
    top: 0;
    background: rgba(255, 253, 247, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    z-index: 100;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-group {
    display: flex;
    align-items: center;
    gap: 12px;
}

.app-icon-small {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.brand-name {
    font-weight: 800;
    font-size: 20px;
    letter-spacing: -0.5px;
    color: #111827;
}

.nav-links {
    display: flex;
    gap: 24px;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: #4B5563;
    font-size: 14px;
    font-weight: 600;
    transition: color 0.2s ease;
}

.nav-links a:hover {
    color: #FF5E36;
}

/* Hero Section */
.hero-section {
    padding: 80px 0 100px;
    overflow: hidden;
}

.hero-container {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 60px;
    align-items: center;
}

.badge {
    display: inline-block;
    padding: 6px 16px;
    background: #FFEFEA;
    color: #FF5E36;
    font-size: 13px;
    font-weight: 700;
    border-radius: 100px;
    margin-bottom: 24px;
}

.hero-title {
    font-size: 52px;
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -1.5px;
    color: #111827;
    margin-bottom: 20px;
}

.hero-title .highlight {
    background: linear-gradient(120deg, #FF5E36 0%, #FF8060 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: 18px;
    color: #4B5563;
    margin-bottom: 36px;
    max-width: 520px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 32px;
    border-radius: 100px;
    text-decoration: none;
    font-weight: 700;
    font-size: 16px;
    transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.btn-primary {
    background: #FF5E36;
    color: #FFFFFF;
    box-shadow: 0 10px 30px rgba(255, 94, 54, 0.35);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 14px 36px rgba(255, 94, 54, 0.45);
    background: #E84D27;
}

.hero-image-wrapper {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.card-glow {
    position: absolute;
    width: 320px;
    height: 320px;
    background: radial-gradient(circle, rgba(255,94,54,0.2) 0%, rgba(255,253,247,0) 70%);
    z-index: 0;
}

.hero-app-icon {
    width: 280px;
    height: 280px;
    border-radius: 56px;
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.12), 0 8px 24px rgba(255, 94, 54, 0.15);
    position: relative;
    z-index: 1;
    transition: transform 0.4s ease;
}

.hero-app-icon:hover {
    transform: scale(1.03) rotate(-2deg);
}

/* Features Section */
.features-section {
    padding: 90px 0;
    background: #FFFFFF;
    border-top: 1px solid rgba(0, 0, 0, 0.04);
}

.section-title {
    text-align: center;
    font-size: 36px;
    font-weight: 800;
    margin-bottom: 60px;
    letter-spacing: -1px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.feature-card {
    padding: 36px 28px;
    background: #FFFDF7;
    border: 1px solid rgba(0, 0, 0, 0.06);
    border-radius: 24px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.06);
}

.feature-icon {
    font-size: 32px;
    margin-bottom: 16px;
}

.feature-card h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
    color: #111827;
}

.feature-card p {
    font-size: 15px;
    color: #6B7280;
    line-height: 1.6;
}

/* Footer */
.footer {
    padding: 48px 0;
    background: #111827;
    color: #9CA3AF;
    font-size: 14px;
}

.footer-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-logo {
    font-weight: 800;
    font-size: 18px;
    color: #FFFFFF;
    display: block;
    margin-bottom: 4px;
}

.footer-right a {
    color: #D1D5DB;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s ease;
}

.footer-right a:hover {
    color: #FF5E36;
}

.divider {
    margin: 0 12px;
    color: #4B5563;
}

/* Modals */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(6px);
}

.modal-content {
    background-color: #FFFFFF;
    margin: 6% auto;
    padding: 40px;
    border-radius: 28px;
    width: 90%;
    max-width: 720px;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.25);
    position: relative;
}

.close-btn {
    position: absolute;
    right: 28px;
    top: 24px;
    font-size: 28px;
    font-weight: bold;
    color: #9CA3AF;
    cursor: pointer;
}

.close-btn:hover {
    color: #111827;
}

.modal-content h2 {
    font-size: 26px;
    font-weight: 800;
    margin-bottom: 8px;
    color: #111827;
}

.effective-date {
    font-size: 13px;
    color: #9CA3AF;
    margin-bottom: 24px;
}

.modal-body h3 {
    font-size: 17px;
    font-weight: 700;
    margin: 20px 0 8px;
    color: #1F2937;
}

.modal-body p, .modal-body ul {
    font-size: 14px;
    color: #4B5563;
    line-height: 1.7;
    margin-bottom: 12px;
}

.highlight-box {
    background: #FFF8F6;
    border: 1px solid #FFDCD4;
    border-radius: 16px;
    padding: 20px;
    margin: 16px 0;
}

.highlight-box h3 {
    margin-top: 0;
    color: #FF5E36;
}

.modal-body ul {
    padding-left: 20px;
}

/* Responsive */
@media (max-width: 768px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }

    .hero-title {
        font-size: 38px;
    }

    .hero-subtitle {
        margin: 0 auto 32px;
    }

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

    .footer-container {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
}