:root {
    --color-primary: #1b2b41; /* Deep navy */
    --color-primary-light: #2c4363;
    --color-accent: #d4af37; /* Amber highlight */
    --color-bg-dark: #0a0c10; /* Warm black */
    --color-bg-light: #fdfbf7; /* Soft ivory */
    --color-gray-light: #f0f0f0; /* Warm light gray */
    --color-gray-dark: #8b9bb4;
    --color-text-dark: #1b2b41;
    --color-text-light: #ffffff;
    --color-text-muted: #8b9bb4;
    
    --color-badge-new: #ff4757;
    --color-badge-bg: rgba(255, 71, 87, 0.15);
    
    --font-sans: 'Pretendard', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    
    --space-ns: 0.25rem;
    --space-xs: 0.375rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 2rem;
    --space-xl: 4rem;
    --space-2xl: 8rem;
    
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
}

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

body {
    font-family: var(--font-sans);
    color: var(--color-text-dark);
    background-color: var(--color-bg-light);
    line-height: 1.6;
    letter-spacing: -0.02em;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
    line-height: 1.25;
    font-weight: 700;
}

a {
    text-decoration: none;
    color: inherit;
}

/* Utilities */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }
.mt-lg { margin-top: var(--space-lg); }

.flex-center {
    display: flex;
    align-items: center;
    justify-content: center;
}

.relative { position: relative; }
.z-10 { z-index: 10; }
.overflow-hidden { overflow: hidden; }

/* Typography */
.logo-umbrella {
    font-family: 'Pretendard', sans-serif;
    font-size: 1.35rem;
    font-weight: 800;
    letter-spacing: -0.01em;
    color: var(--color-text-light);
    display: flex;
    align-items: center;
}

.logo-umbrella-dark {
    font-family: 'Pretendard', sans-serif;
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    opacity: 0.6;
}

.logo-umbrella-light {
    font-family: 'Pretendard', sans-serif;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--color-text-light);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    opacity: 0.5;
}

/* Navbar */
.navbar {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    padding: var(--space-lg) 0;
    z-index: 100;
    background: linear-gradient(to bottom, rgba(10, 12, 16, 0.8), transparent);
}

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

.nav-links {
    display: flex;
    gap: var(--space-lg);
    align-items: center;
}

.nav-links a {
    color: var(--color-text-light);
    font-size: 0.9rem;
    font-weight: 500;
    opacity: 0.7;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.nav-links a:hover, 
.nav-links a.active {
    opacity: 1;
}

.nav-links a.active {
    font-weight: 700;
    color: #fff;
}

.badge {
    background: var(--color-badge-bg);
    color: var(--color-badge-new);
    font-size: 0.65rem;
    font-weight: 800;
    text-transform: uppercase;
    padding: 0.15rem 0.4rem;
    border-radius: var(--radius-sm);
    letter-spacing: 0.05em;
    border: 1px solid rgba(255, 71, 87, 0.3);
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: var(--space-2xl) 0 var(--space-xl);
    overflow: hidden;
}

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

.hero-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    transform: scale(1.03);
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, rgba(10, 12, 16, 0.4) 0%, rgba(10, 12, 16, 0.85) 50%, var(--color-bg-dark) 100%);
}

.hero-content {
    position: relative;
    z-index: 10;
    color: var(--color-text-light);
    max-width: 800px;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.hero-badge {
    display: inline-block;
    width: fit-content;
    font-size: 0.8rem;
    font-weight: 600;
    color: rgba(255,255,255,0.8);
    border: 1px solid rgba(255,255,255,0.2);
    padding: 0.4rem 1rem;
    border-radius: var(--radius-full);
    margin-bottom: var(--space-xs);
    backdrop-filter: blur(4px);
    background: rgba(255,255,255,0.05);
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    font-weight: 300;
    margin-bottom: 0;
}

.hero-title br { display: block; }
.hero-title strong { font-weight: 700; }

.hero-product {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.7);
    font-weight: 400;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.product-name {
    font-weight: 700;
    color: #fff;
    font-size: 1.5rem;
}

.hero-description {
    font-size: 1.05rem;
    color: rgba(255, 255, 255, 0.75);
    margin-bottom: 0;
    max-width: 500px;
    line-height: 1.7;
}

.hero-description-secondary {
    color: rgba(255, 255, 255, 0.9);
    max-width: 560px;
}

/* Actions & Buttons */
.hero-actions {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
}

.store-buttons {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
    align-items: center;
}

.justify-center {
    justify-content: center;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: none;
    border-radius: var(--radius-lg);
    cursor: pointer;
    text-decoration: none;
    transition: all 0.3s ease;
    font-family: inherit;
}

.store-badge-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.25s ease, opacity 0.25s ease;
}

.store-badge-link:hover {
    transform: translateY(-2px);
    opacity: 0.96;
}

.store-badge {
    display: block;
    height: 52px;
    width: auto;
}

.store-badge-app-store {
    height: 52px;
}

.store-badge-google-play {
    height: 52px;
}

.btn-outline {
    background: transparent;
    color: var(--color-text-light);
    padding: 1rem 0;
    width: fit-content;
    font-size: 0.95rem;
    font-weight: 500;
    border-bottom: 1px solid rgba(255,255,255,0.4);
    border-radius: 0;
    opacity: 0.8;
}

.btn-outline:hover {
    opacity: 1;
    border-color: var(--color-text-light);
}

.btn-primary {
    background-color: var(--color-primary);
    color: var(--color-text-light);
    padding: 0.8rem 2.5rem;
    font-size: 1.05rem;
    font-weight: 600;
    border-radius: var(--radius-full);
}

.btn-primary:hover {
    background-color: var(--color-primary-light);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(27, 43, 65, 0.3);
}

.btn-ghost {
    background: transparent;
    color: var(--color-text-muted);
    padding: 0.8rem 1.25rem;
    font-size: 0.95rem;
    font-weight: 600;
}

.btn-ghost:hover {
    color: var(--color-primary);
}

/* Feature tags */
.hero-features {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.feature-tag {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.9);
    background-color: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(4px);
    padding: 0.6rem 1.25rem;
    border-radius: var(--radius-full);
    border: 1px solid rgba(255,255,255,0.05);
}

.feature-tag .material-symbols-outlined {
    font-size: 1.2rem;
    color: var(--color-accent);
}

/* Sections */
.section { padding: 7rem 0; }
.bg-light { background-color: var(--color-bg-light); }
.bg-white { background-color: #ffffff; }
.bg-primary { background-color: var(--color-primary); }
.text-center { text-align: center; }

.content-center {
    display: flex;
    flex-direction: column;
    align-items: center;
    max-width: 800px;
    margin: 0 auto;
}

.section-icon {
    font-size: 3.5rem;
    color: var(--color-primary-light);
    margin-bottom: var(--space-md);
    opacity: 0.9;
}

.section-kicker {
    display: block;
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--color-primary-light);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    margin-bottom: var(--space-sm);
    opacity: 0.7;
}

.section-title {
    font-size: clamp(2rem, 3.5vw, 3rem);
    color: var(--color-primary);
    margin-bottom: var(--space-lg);
    line-height: 1.3;
}

.section-desc {
    font-size: 1.15rem;
    color: var(--color-text-muted);
    line-height: 1.8;
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--space-lg);
}

.feature-card {
    background-color: var(--color-bg-light);
    border: 1px solid rgba(27, 43, 65, 0.06);
    border-radius: var(--radius-xl);
    padding: var(--space-xl) var(--space-lg);
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.04);
    border-color: rgba(27, 43, 65, 0.12);
    background-color: #fff;
}

.card-icon-wrapper {
    width: 64px;
    height: 64px;
    background-color: rgba(27, 43, 65, 0.05);
    color: var(--color-primary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-lg);
}

.card-icon-wrapper .material-symbols-outlined { font-size: 2.2rem; }

.card-title {
    font-size: 1.35rem;
    color: var(--color-primary);
    margin-bottom: var(--space-sm);
}

.card-desc {
    font-size: 1.05rem;
    color: var(--color-text-muted);
    line-height: 1.65;
}

/* Steps (How it works) */
.steps-container {
    display: flex;
    flex-direction: column;
    gap: var(--space-xl);
    max-width: 800px;
    margin: 0 auto;
    position: relative;
}

.steps-container::before {
    content: '';
    position: absolute;
    top: 5px;
    bottom: 20px;
    left: 23px;
    width: 2px;
    background: linear-gradient(to bottom, var(--color-primary) 0%, var(--color-gray-light) 50%, transparent 100%);
    z-index: 1;
}

.step-item {
    position: relative;
    padding-left: 70px;
    z-index: 2;
}

.step-number {
    position: absolute;
    left: 0;
    top: -2px;
    width: 48px;
    height: 48px;
    background-color: var(--color-primary);
    color: var(--color-text-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.25rem;
    box-shadow: 0 0 0 8px var(--color-bg-light);
}

.step-title {
    font-size: 1.5rem;
    color: var(--color-primary);
    margin-bottom: var(--space-sm);
    padding-top: 8px;
}

.step-desc {
    font-size: 1.1rem;
    color: var(--color-text-muted);
    line-height: 1.7;
}

/* Universe Section (NEW) */
.universe-header {
    max-width: 650px;
    margin: 0 auto 4rem;
}

.universe-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--space-lg);
    padding-bottom: var(--space-xl);
}

.universe-card {
    border-radius: var(--radius-xl);
    padding: 3rem 2rem;
    position: relative;
    border: 1px solid var(--color-gray-light);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    transition: all 0.3s ease;
    background: #fff;
    overflow: hidden;
}

.universe-card.active {
    box-shadow: 0 20px 40px rgba(27, 43, 65, 0.08);
    border: 2px solid var(--color-primary);
    transform: translateY(-5px);
}

.universe-card.upcoming {
    background: #fafafa;
    border: 1px dashed var(--color-gray-dark);
}

.universe-status {
    position: absolute;
    top: 1.5rem;
    font-size: 0.75rem;
    font-weight: 700;
    padding: 0.3rem 0.8rem;
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.universe-status.current {
    background: var(--color-primary);
    color: #fff;
}

.universe-status.soon {
    background: var(--color-gray-light);
    color: var(--color-text-muted);
}

.universe-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: rgba(27, 43, 65, 0.05);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 2rem 0 1.5rem;
}

.universe-card.active .universe-icon {
    background: var(--color-primary);
    color: #fff;
}

.universe-card.upcoming .universe-icon {
    color: var(--color-text-muted);
}

.universe-icon .material-symbols-outlined {
    font-size: 2.5rem;
}

.universe-title {
    font-size: 1.6rem;
    color: var(--color-primary);
    margin-bottom: 0.25rem;
}

.universe-card.upcoming .universe-title {
    color: var(--color-text-muted);
}

.universe-subtitle {
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-text-muted);
    margin-bottom: 1.25rem;
}

.universe-desc {
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-text-muted);
}

/* Reassurance Section */
.bg-primary { background-color: var(--color-primary); }
.text-white { color: #fff; }

.bg-blur-circle {
    position: absolute;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(212, 175, 55, 0.15) 0%, transparent 60%);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    border-radius: 50%;
    pointer-events: none;
}

/* Footer */
.footer {
    background-color: var(--color-bg-dark);
    padding: var(--space-2xl) 0 var(--space-lg);
    color: var(--color-text-light);
}

.footer-trust {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: var(--space-lg);
    margin-bottom: var(--space-lg);
}

.disclaimer {
    font-size: 0.9rem;
    color: rgba(255,255,255,0.5);
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.6;
}

.disclaimer.secondary {
    margin-top: var(--space-md);
}

.inline-link {
    color: var(--color-primary);
    text-decoration: underline;
    text-underline-offset: 3px;
}

.footer .inline-link {
    color: rgba(255,255,255,0.88);
    text-decoration: underline;
    text-underline-offset: 3px;
}

.footer-links {
    margin-bottom: var(--space-lg);
    font-size: 0.9rem;
    color: rgba(255,255,255,0.6);
}

.footer-links a {
    transition: color 0.3s ease;
    margin: 0 0.5rem;
}

.footer-links a:hover { color: #fff; }
.separator { opacity: 0.3; }
.copyright { font-size: 0.85rem; color: rgba(255,255,255,0.3); }

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(8px);
    z-index: 1000;
    align-items: center; justify-content: center;
    opacity: 0; transition: opacity 0.3s ease;
}

.modal.show { display: flex; opacity: 1; }

.modal-content {
    background-color: var(--color-bg-light);
    padding: var(--space-xl) var(--space-lg);
    border-radius: var(--radius-xl);
    max-width: 420px;
    width: 90%;
    text-align: center;
    position: relative;
    transform: translateY(20px);
    transition: transform 0.3s ease;
}

.modal.show .modal-content { transform: translateY(0); }
.close-btn { position: absolute; top: 1.5rem; right: 2rem; font-size: 1.8rem; cursor: pointer; color: var(--color-text-muted); }
.modal-icon { font-size: 3.5rem; color: var(--color-primary); margin-bottom: var(--space-md); }
.modal-title { color: var(--color-primary); margin-bottom: var(--space-sm); font-size: 1.5rem; }
.modal-desc { color: var(--color-text-muted); font-size: 1.05rem; margin-bottom: var(--space-lg); line-height: 1.6;}

.modal-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}

/* Policy pages */
.policy-body {
    background: linear-gradient(180deg, #f7f3ed 0%, #fdfbf7 18%, #ffffff 100%);
    color: var(--color-text-dark);
}

.policy-navbar {
    position: sticky;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(27, 43, 65, 0.08);
}

.policy-navbar .logo-umbrella {
    color: var(--color-primary);
}

.policy-navbar .nav-links a {
    color: var(--color-primary);
    opacity: 0.7;
}

.policy-navbar .nav-links a:hover,
.policy-navbar .nav-links a.active {
    opacity: 1;
}

.policy-hero {
    padding: 8rem 0 3rem;
    background:
        radial-gradient(circle at top right, rgba(212, 175, 55, 0.18), transparent 34%),
        linear-gradient(180deg, rgba(27, 43, 65, 0.96), rgba(27, 43, 65, 0.88));
    color: var(--color-text-light);
}

.policy-kicker {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.72);
    margin-bottom: 1rem;
}

.policy-title {
    font-size: clamp(2.2rem, 4vw, 3.8rem);
    font-weight: 300;
    margin-bottom: 1rem;
}

.policy-lead {
    max-width: 760px;
    color: rgba(255, 255, 255, 0.82);
    font-size: 1.05rem;
}

.policy-main {
    padding: 3.5rem 0 5rem;
}

.policy-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.7fr) minmax(260px, 0.9fr);
    gap: 2rem;
    align-items: start;
}

.policy-card,
.policy-aside {
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid rgba(27, 43, 65, 0.08);
    border-radius: var(--radius-xl);
    box-shadow: 0 18px 42px rgba(20, 28, 42, 0.05);
}

.policy-card {
    padding: 2.25rem;
}

.policy-card section + section {
    margin-top: 2.25rem;
    padding-top: 2.25rem;
    border-top: 1px solid rgba(27, 43, 65, 0.08);
}

.policy-card h2 {
    font-size: 1.35rem;
    margin-bottom: 0.9rem;
    color: var(--color-primary);
}

.policy-card h3 {
    font-size: 1.05rem;
    margin: 1.25rem 0 0.5rem;
    color: var(--color-primary);
}

.policy-card p,
.policy-card li {
    color: #4a5d75;
    font-size: 1rem;
    line-height: 1.8;
}

.policy-card ul {
    padding-left: 1.1rem;
}

.policy-card ol {
    padding-left: 1.35rem;
}

.policy-card li + li {
    margin-top: 0.45rem;
}

.policy-aside {
    padding: 1.5rem;
    position: sticky;
    top: 100px;
}

.policy-aside h3 {
    color: var(--color-primary);
    font-size: 1rem;
    margin-bottom: 0.85rem;
}

.policy-aside p,
.policy-aside li {
    color: #5f738c;
    font-size: 0.95rem;
    line-height: 1.7;
}

.policy-aside ul {
    padding-left: 1rem;
    margin-bottom: 1rem;
}

.policy-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem 1.5rem;
    color: rgba(255, 255, 255, 0.72);
    font-size: 0.92rem;
    margin-top: 1.5rem;
}

.policy-callout {
    margin-top: 1rem;
    padding: 1rem 1.1rem;
    border-radius: var(--radius-lg);
    background: rgba(27, 43, 65, 0.04);
    border: 1px solid rgba(27, 43, 65, 0.08);
}

.policy-callout strong {
    color: var(--color-primary);
}

/* Animations */
.animate-fade-in { opacity: 0; animation: fadeIn 1s ease forwards; }
.animate-fade-in-delay { opacity: 0; animation: fadeIn 1s ease forwards 0.2s; }
.animate-fade-in-delay-2 { opacity: 0; animation: fadeIn 1s ease forwards 0.4s; }
.animate-fade-in-delay-3 { opacity: 0; animation: fadeIn 1s ease forwards 0.6s; }
.animate-fade-in-delay-4 { opacity: 0; animation: fadeIn 1s ease forwards 0.8s; }

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

/* Responsive */
@media (max-width: 768px) {
    .hero { padding-top: 100px; align-items: flex-start; }
    .hero-content { padding-top: var(--space-xl); }
    .hero-title { font-size: 2.25rem; }
    .product-name { font-size: 1.25rem; }
    .store-buttons { flex-direction: column; width: 100%; }
    .store-badge-link { width: fit-content; }
    .store-badge-app-store { height: 48px; }
    .store-badge-google-play { height: 48px; }
    .hero-features { flex-direction: column; gap: var(--space-sm); }
    .feature-tag { width: fit-content; }
    
    .section { padding: var(--space-xl) 0; }
    .section-title { font-size: 1.8rem; }
    
    .steps-container::before { left: 19px; }
    .step-item { padding-left: 55px; }
    .step-number { width: 40px; height: 40px; font-size: 1.1rem; }
    
    .universe-grid { grid-template-columns: 1fr; }
    .navbar .container { flex-direction: column; gap: 1rem;}
    .policy-grid { grid-template-columns: 1fr; }
    .policy-aside { position: static; }
    .policy-main { padding-top: 2rem; }
}