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

:root {
    --bg-primary: #0a0e1a;
    --bg-secondary: #141824;
    --gold: #c9a84c;
    --gold-dark: #a68a3d;
    --amber: #d4a259;
    --text-primary: #ffffff;
    --text-secondary: #b8bcc8;
    --text-muted: #6c7080;
    --border-color: #252938;
    --alert-red: #e63946;
    --success-green: #06d6a0;
}

body {
    font-family: 'Noto Sans KR', sans-serif;
    background: linear-gradient(135deg, var(--bg-primary) 0%, #050813 100%);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.header {
    background: rgba(10, 14, 26, 0.95);
    backdrop-filter: blur(10px);
    padding: 40px 0;
    border-bottom: 1px solid var(--gold);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.logo h1 {
    font-family: 'Playfair Display', serif;
    font-size: 2.5rem;
    color: var(--gold);
    letter-spacing: 3px;
    margin-bottom: 8px;
    text-align: center;
}

.subtitle {
    color: var(--text-secondary);
    text-align: center;
    font-size: 1rem;
    letter-spacing: 1px;
}

/* Support Banner */
.support-banner {
    padding: 60px 0;
    background: linear-gradient(90deg, rgba(201,168,76,0.1) 0%, rgba(212,162,89,0.1) 100%);
    border-bottom: 1px solid var(--border-color);
}

.banner-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.banner-stat {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 30px;
    background: rgba(20, 24, 36, 0.8);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    transition: all 0.3s ease;
}

.banner-stat:hover {
    transform: translateY(-5px);
    border-color: var(--gold);
    box-shadow: 0 10px 40px rgba(201, 168, 76, 0.2);
}

.banner-stat i {
    font-size: 2.5rem;
    color: var(--gold);
}

.banner-stat h3 {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.banner-stat .amount {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--gold);
    font-family: 'Playfair Display', serif;
}

/* Timeline Section */
.timeline-section {
    padding: 80px 0 100px;
}

.timeline {
    position: relative;
    padding: 40px 0;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: 100%;
    background: linear-gradient(180deg, var(--gold) 0%, var(--amber) 100%);
    opacity: 0.3;
}

.timeline-item {
    display: flex;
    margin-bottom: 80px;
    position: relative;
    opacity: 0;
    animation: fadeInUp 0.6s ease forwards;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.timeline-item:nth-child(even) {
    flex-direction: row-reverse;
}

.timeline-marker {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
}

.marker-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--gold) 0%, var(--amber) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 30px rgba(201, 168, 76, 0.6);
    border: 3px solid var(--bg-primary);
}

.marker-icon.grand-finale {
    width: 80px;
    height: 80px;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        box-shadow: 0 0 30px rgba(201, 168, 76, 0.6);
    }
    50% {
        transform: scale(1.1);
        box-shadow: 0 0 50px rgba(201, 168, 76, 0.9);
    }
}

.marker-icon i {
    font-size: 1.5rem;
    color: var(--bg-primary);
}

.marker-icon.grand-finale i {
    font-size: 2rem;
}

.timeline-content {
    width: 45%;
    padding: 0 30px;
}

.timeline-header {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 20px;
}

.timeline-date {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--gold);
    font-family: 'Playfair Display', serif;
}

.timeline-badge {
    display: inline-block;
    padding: 8px 16px;
    background: rgba(201, 168, 76, 0.15);
    border: 1px solid var(--gold);
    border-radius: 20px;
    font-size: 1.1rem;
    color: var(--text-primary);
    align-self: flex-start;
}

.timeline-badge.milestone {
    background: rgba(201, 168, 76, 0.25);
    border-color: var(--gold);
}

.timeline-badge.critical {
    background: rgba(212, 162, 89, 0.25);
    border-color: var(--amber);
    animation: glow 2s ease-in-out infinite;
}

@keyframes glow {
    0%, 100% {
        box-shadow: 0 0 10px rgba(201, 168, 76, 0.5);
    }
    50% {
        box-shadow: 0 0 20px rgba(201, 168, 76, 0.8);
    }
}

.timeline-card {
    background: rgba(20, 24, 36, 0.9);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.timeline-card:hover {
    transform: translateY(-5px);
    border-color: var(--gold);
    box-shadow: 0 15px 50px rgba(201, 168, 76, 0.15);
}

.timeline-card.grand {
    border: 2px solid var(--gold);
    background: linear-gradient(135deg, rgba(20, 24, 36, 0.95) 0%, rgba(201, 168, 76, 0.05) 100%);
}

.card-section {
    padding: 30px;
    border-bottom: 1px solid var(--border-color);
}

.card-section:last-child {
    border-bottom: none;
}

.card-section h4 {
    font-size: 1.1rem;
    color: var(--gold);
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.card-section.alert {
    background: rgba(230, 57, 70, 0.05);
    border-left: 4px solid var(--alert-red);
}

.card-section.alert h4 {
    color: var(--alert-red);
}

.card-section.alert p {
    color: var(--text-primary);
    font-weight: 500;
}

.card-section.benefits {
    background: rgba(201, 168, 76, 0.05);
}

.card-section.cost {
    background: rgba(108, 112, 128, 0.1);
}

.checklist {
    list-style: none;
}

.checklist li {
    padding: 12px 0;
    color: var(--text-secondary);
    display: flex;
    align-items: flex-start;
    gap: 12px;
    border-bottom: 1px solid rgba(37, 41, 56, 0.5);
}

.checklist li:last-child {
    border-bottom: none;
}

.checklist li i {
    color: var(--gold);
    margin-top: 4px;
    flex-shrink: 0;
}

.benefit-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px;
    background: rgba(20, 24, 36, 0.6);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    margin-bottom: 12px;
}

.benefit-item.highlight {
    border-color: var(--gold);
    background: rgba(201, 168, 76, 0.08);
}

.benefit-label {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.benefit-amount {
    color: var(--gold);
    font-size: 1.2rem;
    font-weight: 700;
    font-family: 'Playfair Display', serif;
}

.benefit-note {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-top: 8px;
    line-height: 1.5;
}

.milestone-text {
    color: var(--text-secondary);
    font-size: 1.1rem;
    text-align: center;
    font-style: italic;
}

/* Footer */
.footer {
    background: rgba(10, 14, 26, 0.95);
    border-top: 1px solid var(--gold);
    padding: 60px 0 40px;
    text-align: center;
}

.footer-brand {
    font-family: 'Playfair Display', serif;
    font-size: 2rem;
    color: var(--gold);
    margin-bottom: 12px;
    letter-spacing: 2px;
}

.footer-tagline {
    color: var(--text-secondary);
    font-size: 1rem;
    margin-bottom: 20px;
    font-style: italic;
}

.footer-copyright {
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* Responsive */
@media (max-width: 1024px) {
    .timeline::before {
        left: 30px;
    }

    .timeline-item {
        flex-direction: column !important;
        padding-left: 80px;
    }

    .timeline-marker {
        left: 30px;
        transform: translateX(0);
    }

    .timeline-content {
        width: 100%;
        padding: 0;
    }
}

@media (max-width: 768px) {
    .logo h1 {
        font-size: 1.8rem;
    }

    .subtitle {
        font-size: 0.9rem;
    }

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

    .banner-stat {
        padding: 20px;
    }

    .banner-stat .amount {
        font-size: 1.5rem;
    }

    .timeline-date {
        font-size: 1.1rem;
    }

    .timeline-badge {
        font-size: 0.95rem;
        padding: 6px 12px;
    }

    .card-section {
        padding: 20px;
    }

    .benefit-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }

    .marker-icon {
        width: 50px;
        height: 50px;
    }

    .marker-icon.grand-finale {
        width: 60px;
        height: 60px;
    }

    .marker-icon i {
        font-size: 1.2rem;
    }

    .marker-icon.grand-finale i {
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    .header {
        padding: 20px 0;
    }

    .logo h1 {
        font-size: 1.5rem;
        letter-spacing: 1px;
    }

    .timeline-item {
        padding-left: 60px;
    }

    .timeline-marker {
        left: 20px;
    }

    .timeline::before {
        left: 20px;
    }
}