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

:root {
    /* Primary Colors */
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    
    /* Secondary Colors */
    --secondary-color: #ec4899;
    --secondary-dark: #db2777;
    
    /* Accent Colors */
    --accent-gold: #fbbf24;
    --accent-purple: #a855f7;
    
    /* Neutral Colors */
    --dark: #0f172a;
    --dark-light: #1e293b;
    --gray: #64748b;
    --gray-light: #cbd5e1;
    --white: #ffffff;
    --bg-light: #f8fafc;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-gold: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
    --gradient-hero: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
}

body {
    font-family: 'Nanum Gothic', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--dark);
    line-height: 1.6;
    background-color: var(--white);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ===== Hero Section ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--spacing-3xl) var(--spacing-md);
    overflow: hidden;
    background: var(--gradient-hero);
    color: var(--white);
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.1;
    background-image: 
        radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.2) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.2) 0%, transparent 50%);
    animation: float 20s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(20px, -20px) scale(1.05); }
}

.hero .container {
    position: relative;
    z-index: 2;
}

.hero-badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: var(--spacing-md);
    animation: slideDown 0.8s ease;
}

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

.hero-title {
    font-size: 3.5rem;
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    animation: fadeInUp 0.8s ease 0.2s backwards;
}

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

.hero-title .highlight {
    display: inline-block;
    background: linear-gradient(to right, #fbbf24, #f59e0b);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xl);
    opacity: 0.95;
    animation: fadeInUp 0.8s ease 0.4s backwards;
}

.hero-price {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease 0.6s backwards;
}

.original-price,
.sale-price {
    padding: var(--spacing-md) var(--spacing-lg);
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-xl);
    border: 2px solid rgba(255, 255, 255, 0.2);
}

.original-price {
    text-decoration: line-through;
    opacity: 0.8;
}

.sale-price {
    background: rgba(251, 191, 36, 0.2);
    border-color: var(--accent-gold);
    transform: scale(1.05);
}

.hero-price .label {
    display: block;
    font-size: 0.875rem;
    margin-bottom: var(--spacing-xs);
    opacity: 0.9;
}

.hero-price .price {
    display: block;
    font-size: 2rem;
    font-weight: 900;
    margin-bottom: var(--spacing-xs);
}

.hero-price .detail {
    display: block;
    font-size: 0.75rem;
    opacity: 0.8;
}

.hero-price .arrow {
    font-size: 2rem;
    opacity: 0.8;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease 0.8s backwards;
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
    font-family: inherit;
}

.btn i {
    font-size: 1.1rem;
}

.btn-primary {
    background: var(--white);
    color: var(--primary-color);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.2);
    color: var(--white);
    border: 2px solid var(--white);
}

.btn-secondary:hover {
    background: var(--white);
    color: var(--primary-color);
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn-outline:hover {
    background: var(--primary-color);
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-vip {
    background: var(--gradient-gold);
    color: var(--white);
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1.125rem;
}

.btn-vip:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-2xl);
}

.btn-large {
    padding: 1.25rem var(--spacing-2xl);
    font-size: 1.125rem;
}

/* ===== Section Styles ===== */
section {
    padding: var(--spacing-3xl) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--dark);
    margin-bottom: var(--spacing-md);
}

.section-header p {
    font-size: 1.125rem;
    color: var(--gray);
}

/* ===== Target Section ===== */
.target-section {
    background: var(--bg-light);
}

.target-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.target-card {
    background: var(--white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: all var(--transition-base);
}

.target-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.target-card .icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.target-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: var(--spacing-md);
}

.target-card p {
    color: var(--gray);
    line-height: 1.7;
}

.target-card strong {
    color: var(--primary-color);
    font-weight: 700;
}

/* ===== Price Section ===== */
.price-section {
    background: var(--white);
}

.original-price-banner {
    max-width: 900px;
    margin: 0 auto var(--spacing-2xl);
    padding: var(--spacing-xl);
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.05) 0%, rgba(251, 191, 36, 0.05) 100%);
    border: 3px solid #fbbf24;
    border-radius: var(--radius-xl);
    box-shadow: 0 8px 16px rgba(251, 191, 36, 0.2);
    position: relative;
    overflow: hidden;
}

.original-price-banner::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(251, 191, 36, 0.1) 0%, transparent 70%);
    border-radius: 50%;
}

.banner-icon {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    font-size: 3rem;
    opacity: 0.3;
    animation: float 3s ease-in-out infinite;
}

.banner-content {
    position: relative;
    z-index: 1;
}

.banner-label {
    font-size: 1rem;
    font-weight: 700;
    color: #92400e;
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.banner-details {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xl);
    flex-wrap: wrap;
}

.banner-detail-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-md) var(--spacing-xl);
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.detail-label {
    font-size: 0.875rem;
    color: var(--gray);
    font-weight: 600;
}

.detail-value {
    font-size: 2rem;
    font-weight: 900;
    line-height: 1;
}

.price-highlight {
    color: #dc2626;
    text-decoration: line-through;
    text-decoration-thickness: 3px;
}

.credit-highlight {
    color: #f59e0b;
}

.banner-divider {
    font-size: 2rem;
    font-weight: 700;
    color: var(--gray);
}

.banner-arrow {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-lg);
    animation: bounce 2s ease-in-out infinite;
}

.banner-arrow i {
    font-size: 2rem;
    color: #f59e0b;
}

.banner-arrow span {
    font-size: 0.875rem;
    font-weight: 700;
    color: #92400e;
}

@keyframes bounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

.price-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-md);
    max-width: 1300px;
    margin: 0 auto;
}

.price-card {
    background: var(--white);
    border: 2px solid var(--gray-light);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.price-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform var(--transition-base);
}

.price-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-2xl);
    border-color: var(--primary-color);
}

.price-card:hover::before {
    transform: scaleX(1);
}

.price-card.popular {
    border-color: var(--primary-color);
    border-width: 3px;
    transform: scale(1.05);
}

.price-card.popular::before {
    transform: scaleX(1);
}

.price-card.popular:hover {
    transform: scale(1.05) translateY(-8px);
}

.popular-badge {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    background: var(--gradient-primary);
    color: var(--white);
    padding: 0.25rem 0.75rem;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 700;
}

.card-header {
    text-align: center;
    margin-bottom: var(--spacing-md);
}

.card-header h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: var(--spacing-xs);
}

.card-header .credit {
    font-size: 1rem;
    color: var(--primary-color);
    font-weight: 600;
}

.card-price {
    text-align: center;
    margin-bottom: var(--spacing-sm);
}

.card-price .currency {
    font-size: 1rem;
    font-weight: 600;
    color: var(--gray);
}

.card-price .amount {
    font-size: 2.25rem;
    font-weight: 900;
    color: var(--dark);
}

.card-price .period {
    font-size: 0.875rem;
    color: var(--gray);
}

.card-comparison {
    text-align: center;
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--bg-light);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
}

.card-comparison.highlight {
    background: linear-gradient(135deg, rgba(251, 191, 36, 0.1) 0%, rgba(245, 158, 11, 0.1) 100%);
}

.comparison-label {
    font-size: 0.75rem;
    color: var(--gray);
    margin-bottom: 0.25rem;
}

.comparison-value {
    font-size: 1rem;
    font-weight: 700;
    color: var(--secondary-color);
}

.card-features {
    list-style: none;
    margin-bottom: var(--spacing-md);
}

.card-features li {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0.4rem 0;
    color: var(--dark);
    font-size: 0.875rem;
    line-height: 1.4;
}

.card-features i {
    color: var(--primary-color);
    font-size: 1rem;
    flex-shrink: 0;
}

.card-features i.fa-star {
    color: var(--accent-gold);
}

.price-card .btn {
    width: 100%;
    justify-content: center;
}

/* ===== Warning Section ===== */
.warning-section {
    background: var(--white);
    padding: var(--spacing-3xl) 0;
}

.warning-banner {
    max-width: 1000px;
    margin: 0 auto;
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.05) 0%, rgba(220, 38, 38, 0.05) 100%);
    border: 2px solid #fca5a5;
    border-radius: var(--radius-2xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-lg);
}

.warning-header {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.warning-header i {
    font-size: 2.5rem;
    color: #dc2626;
    animation: pulse 2s ease-in-out infinite;
}

.warning-header h2 {
    font-size: 2rem;
    font-weight: 900;
    color: #dc2626;
    margin: 0;
}

.warning-content {
    background: var(--white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
}

.warning-main {
    text-align: center;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: var(--spacing-lg);
}

.warning-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.warning-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: rgba(239, 68, 68, 0.05);
    border-left: 3px solid #dc2626;
    border-radius: var(--radius-md);
}

.warning-item i {
    font-size: 1.5rem;
    color: #dc2626;
    flex-shrink: 0;
    margin-top: 0.25rem;
}

.warning-item div {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.warning-item strong {
    font-size: 1rem;
    font-weight: 700;
    color: #dc2626;
}

.warning-item span {
    font-size: 0.875rem;
    color: var(--gray);
    line-height: 1.6;
}

.warning-footer {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(168, 85, 247, 0.1) 100%);
    border-radius: var(--radius-lg);
    border: 2px solid var(--primary-color);
}

.warning-footer i {
    font-size: 2rem;
    color: var(--primary-color);
    flex-shrink: 0;
}

.warning-footer p {
    font-size: 1rem;
    color: var(--dark);
    line-height: 1.7;
    margin: 0;
}

.warning-footer strong {
    color: var(--primary-color);
    font-weight: 700;
    font-size: 1.125rem;
}

/* ===== VIP Section ===== */
.vip-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: var(--white);
    padding: var(--spacing-3xl) 0;
}

.vip-card {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.vip-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-md);
    animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.vip-card h2 {
    font-size: 2.5rem;
    font-weight: 900;
    margin-bottom: var(--spacing-md);
}

.vip-description {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xl);
    opacity: 0.95;
    line-height: 1.8;
}

.vip-benefits {
    display: flex;
    gap: var(--spacing-lg);
    justify-content: center;
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
}

.vip-benefit {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-lg);
    font-weight: 600;
}

.vip-benefit i {
    font-size: 1.5rem;
    color: var(--accent-gold);
}

/* ===== Features Section ===== */
.features-section {
    background: var(--bg-light);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.feature-card {
    background: var(--white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: all var(--transition-base);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.feature-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: var(--spacing-md);
}

.feature-card p {
    color: var(--gray);
    line-height: 1.7;
}

/* ===== Data Preservation Section ===== */
.data-preservation-section {
    background: var(--bg-light);
    padding: var(--spacing-3xl) 0;
}

.preservation-content {
    max-width: 1200px;
    margin: 0 auto;
}

.preservation-comparison {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-2xl);
    align-items: center;
}

.comparison-bad,
.comparison-good {
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    position: relative;
}

.comparison-bad {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.05) 0%, rgba(220, 38, 38, 0.05) 100%);
    border: 2px solid #fca5a5;
}

.comparison-good {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.05) 0%, rgba(5, 150, 105, 0.05) 100%);
    border: 2px solid #6ee7b7;
}

.comparison-icon {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    margin: 0 auto var(--spacing-md);
    font-size: 3rem;
}

.comparison-icon.bad {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    color: var(--white);
}

.comparison-icon.good {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: var(--white);
}

.comparison-bad h3,
.comparison-good h3 {
    text-align: center;
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    color: var(--dark);
}

.comparison-problems,
.comparison-benefits {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.problem-item,
.benefit-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: var(--white);
    border-radius: var(--radius-md);
}

.problem-item i {
    color: #dc2626;
    font-size: 1.125rem;
    flex-shrink: 0;
}

.benefit-item i {
    color: #059669;
    font-size: 1.125rem;
    flex-shrink: 0;
}

.problem-item span,
.benefit-item span {
    color: var(--dark);
    font-weight: 500;
}

.comparison-result {
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    line-height: 1.6;
}

.comparison-result.bad {
    background: rgba(239, 68, 68, 0.1);
    border-left: 3px solid #dc2626;
    color: #7f1d1d;
}

.comparison-result.good {
    background: rgba(16, 185, 129, 0.1);
    border-left: 3px solid #059669;
    color: #064e3b;
}

.comparison-result strong {
    font-weight: 700;
}

.comparison-arrow {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 2rem;
    color: var(--gray);
}

.comparison-arrow span {
    font-size: 1rem;
    font-weight: 700;
    color: var(--dark);
}

.preservation-highlight {
    display: flex;
    gap: var(--spacing-xl);
    padding: var(--spacing-xl);
    background: var(--white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    border: 2px solid var(--primary-color);
}

.highlight-icon {
    flex-shrink: 0;
    width: 100px;
    height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: 50%;
    font-size: 3rem;
    color: var(--white);
}

.highlight-content h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: var(--spacing-md);
}

.highlight-content p {
    color: var(--gray);
    line-height: 1.8;
    margin-bottom: var(--spacing-lg);
}

.highlight-content strong {
    color: var(--primary-color);
    font-weight: 700;
}

.highlight-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
}

.stat-item {
    text-align: center;
    padding: var(--spacing-md);
    background: var(--bg-light);
    border-radius: var(--radius-md);
}

.stat-number {
    font-size: 2rem;
    font-weight: 900;
    color: var(--primary-color);
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--gray);
    font-weight: 600;
}

/* ===== Refill Section ===== */
.refill-section {
    background: var(--white);
}

.refill-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.refill-card {
    position: relative;
    padding: var(--spacing-xl);
    background: var(--bg-light);
    border-radius: var(--radius-xl);
    border: 2px solid var(--gray-light);
    transition: all var(--transition-base);
}

.refill-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.refill-number {
    position: absolute;
    top: -15px;
    left: var(--spacing-lg);
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    color: var(--white);
    font-size: 1.25rem;
    font-weight: 900;
    border-radius: 50%;
    box-shadow: var(--shadow-md);
}

.refill-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.refill-card p {
    color: var(--gray);
    line-height: 1.8;
}

.operation-method {
    max-width: 900px;
    margin: var(--spacing-2xl) auto 0;
    padding: var(--spacing-xl);
    background: var(--white);
    border-radius: var(--radius-xl);
    border: 2px dashed var(--gray-light);
}

.method-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--bg-light);
}

.method-header i {
    font-size: 1.5rem;
    color: var(--primary-color);
}

.method-header h4 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--dark);
    margin: 0;
}

.method-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.method-item {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--bg-light);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
}

.method-item:hover {
    background: rgba(99, 102, 241, 0.05);
    transform: translateX(5px);
}

.method-icon {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--white);
    border-radius: 50%;
    color: var(--primary-color);
    font-size: 1.25rem;
}

.method-text strong {
    display: block;
    font-size: 1rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: var(--spacing-xs);
}

.method-text p {
    font-size: 0.875rem;
    color: var(--gray);
    line-height: 1.6;
    margin: 0;
}

.method-note {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(168, 85, 247, 0.1) 100%);
    border-radius: var(--radius-md);
    border-left: 3px solid var(--primary-color);
}

.method-note i {
    font-size: 1.25rem;
    color: var(--primary-color);
}

.method-note span {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--dark);
}

/* ===== Warranty Section ===== */
.warranty-section {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    color: var(--white);
    padding: var(--spacing-3xl) 0;
}

.warranty-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: var(--spacing-xl);
}

.warranty-icon {
    width: 120px;
    height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border-radius: 50%;
    font-size: 4rem;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.warranty-text h2 {
    font-size: 2.5rem;
    font-weight: 900;
    margin-bottom: var(--spacing-md);
}

.warranty-text p {
    font-size: 1.125rem;
    line-height: 1.8;
    opacity: 0.95;
}

.warranty-features {
    display: flex;
    gap: var(--spacing-xl);
    flex-wrap: wrap;
    justify-content: center;
}

.warranty-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-lg);
    font-weight: 600;
    font-size: 1.125rem;
}

.warranty-item i {
    font-size: 1.5rem;
}

.warranty-disclaimer {
    display: flex;
    gap: var(--spacing-lg);
    align-items: flex-start;
    margin-top: var(--spacing-xl);
    padding: var(--spacing-xl);
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-xl);
    border: 2px solid rgba(255, 255, 255, 0.2);
}

.disclaimer-icon {
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    font-size: 2rem;
}

.disclaimer-content h4 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.disclaimer-content p {
    font-size: 1rem;
    line-height: 1.8;
    opacity: 0.95;
}

.disclaimer-content strong {
    font-weight: 700;
    color: var(--accent-gold);
}

.disclaimer-content .no-worry {
    display: inline-block;
    background: var(--accent-gold);
    color: var(--dark);
    padding: 0.25rem 0.75rem;
    border-radius: 50px;
    font-weight: 700;
    margin-left: 0.25rem;
}

/* ===== Guide Section ===== */
.guide-section {
    background: var(--bg-light);
}

.guide-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--spacing-2xl);
    align-items: center;
}

.guide-illustration {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 8rem;
    color: var(--primary-color);
    opacity: 0.3;
}

.guide-text h3 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: var(--spacing-lg);
}

.guide-list {
    list-style: none;
    margin-bottom: var(--spacing-xl);
}

.guide-list li {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

.guide-list li:hover {
    box-shadow: var(--shadow-md);
    transform: translateX(5px);
}

.guide-list i {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-top: 0.25rem;
    flex-shrink: 0;
}

.guide-list strong {
    display: block;
    font-size: 1.125rem;
    color: var(--dark);
    margin-bottom: var(--spacing-xs);
}

.guide-list span {
    display: block;
    color: var(--gray);
    line-height: 1.6;
}

.guide-note {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(168, 85, 247, 0.1) 100%);
    border-left: 4px solid var(--primary-color);
    border-radius: var(--radius-md);
}

.guide-note i {
    font-size: 1.5rem;
    color: var(--primary-color);
    flex-shrink: 0;
}

.guide-note p {
    color: var(--dark);
    line-height: 1.7;
}

/* ===== FAQ Section ===== */
.faq-section {
    background: var(--white);
}

.faq-list {
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    margin-bottom: var(--spacing-md);
    background: var(--bg-light);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-base);
}

.faq-item:hover {
    box-shadow: var(--shadow-md);
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg);
    cursor: pointer;
    transition: all var(--transition-base);
}

.faq-question:hover {
    background: var(--white);
}

.faq-question h4 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--dark);
}

.faq-question i {
    font-size: 1rem;
    color: var(--primary-color);
    transition: transform var(--transition-base);
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: all var(--transition-base);
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer p {
    padding: 0 var(--spacing-lg) var(--spacing-lg);
    color: var(--gray);
    line-height: 1.8;
}

.faq-answer p:last-child {
    padding-bottom: var(--spacing-lg);
}

.faq-additional {
    margin-top: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg) !important;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.05) 0%, rgba(168, 85, 247, 0.05) 100%);
    border-left: 3px solid var(--primary-color);
    border-radius: var(--radius-md);
}

.faq-additional strong {
    color: var(--primary-color);
    font-weight: 700;
}

/* ===== CTA Section ===== */
.cta-section {
    background: var(--gradient-hero);
    color: var(--white);
    padding: var(--spacing-3xl) 0;
    text-align: center;
}

.cta-content h2 {
    font-size: 2.5rem;
    font-weight: 900;
    margin-bottom: var(--spacing-md);
}

.cta-content p {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xl);
    opacity: 0.95;
}

.cta-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

.cta-section .btn-primary {
    background: var(--white);
    color: var(--primary-color);
}

.cta-section .btn-secondary {
    background: rgba(255, 255, 255, 0.2);
    color: var(--white);
    border: 2px solid var(--white);
}

.cta-section .btn-secondary:hover {
    background: var(--white);
    color: var(--primary-color);
}

/* ===== Footer ===== */
.footer {
    background: var(--dark);
    color: var(--white);
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-section h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.footer-section h4 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--gray-light);
}

.footer-section p {
    color: var(--gray-light);
    line-height: 1.7;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    padding: var(--spacing-xs) 0;
    color: var(--gray-light);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--gray-light);
}

/* ===== Responsive Design ===== */
@media (max-width: 1024px) {
    .hero-title {
        font-size: 2.75rem;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
    
    .price-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .guide-content {
        grid-template-columns: 1fr;
    }
    
    .guide-illustration {
        font-size: 5rem;
    }
}

@media (max-width: 768px) {
    :root {
        --spacing-3xl: 4rem;
        --spacing-2xl: 3rem;
    }
    
    .hero {
        min-height: auto;
        padding: var(--spacing-2xl) var(--spacing-md);
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .hero-price {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .hero-price .arrow {
        transform: rotate(90deg);
    }
    
    .section-header h2 {
        font-size: 1.75rem;
    }
    
    .section-header p {
        font-size: 1rem;
    }
    
    .target-grid,
    .price-grid,
    .features-grid,
    .refill-grid,
    .warning-grid {
        grid-template-columns: 1fr;
    }
    
    .warning-header {
        flex-direction: column;
        text-align: center;
    }
    
    .warning-header h2 {
        font-size: 1.5rem;
    }
    
    .warning-footer {
        flex-direction: column;
        text-align: center;
    }
    
    .preservation-comparison {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .comparison-arrow {
        transform: rotate(90deg);
    }
    
    .preservation-highlight {
        flex-direction: column;
        text-align: center;
    }
    
    .highlight-icon {
        margin: 0 auto;
    }
    
    .highlight-stats {
        grid-template-columns: 1fr;
    }
    
    .method-item {
        flex-direction: column;
        text-align: center;
    }
    
    .method-icon {
        margin: 0 auto;
    }
    
    .original-price-banner {
        padding: var(--spacing-md);
    }
    
    .banner-icon {
        font-size: 2rem;
        top: var(--spacing-sm);
        right: var(--spacing-sm);
    }
    
    .banner-details {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .banner-divider {
        transform: rotate(90deg);
    }
    
    .detail-value {
        font-size: 1.75rem;
    }
    
    .price-card.popular {
        transform: scale(1);
    }
    
    .vip-card h2 {
        font-size: 1.75rem;
    }
    
    .vip-benefits {
        flex-direction: column;
        align-items: stretch;
    }
    
    .warranty-text h2 {
        font-size: 1.75rem;
    }
    
    .warranty-features {
        flex-direction: column;
        align-items: stretch;
    }
    
    .warranty-disclaimer {
        flex-direction: column;
        text-align: center;
        align-items: center;
    }
    
    .guide-illustration {
        display: none;
    }
    
    .cta-content h2 {
        font-size: 1.75rem;
    }
    
    .cta-content p {
        font-size: 1rem;
    }
    
    .cta-buttons {
        flex-direction: column;
    }
    
    .btn-large {
        padding: var(--spacing-md) var(--spacing-lg);
        font-size: 1rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.75rem;
    }
    
    .hero-price .price {
        font-size: 1.5rem;
    }
    
    .card-price .amount {
        font-size: 2.5rem;
    }
    
    .vip-icon {
        font-size: 3rem;
    }
    
    .warranty-icon {
        width: 80px;
        height: 80px;
        font-size: 3rem;
    }
}