/* ========================================
   CSS Variables
   ======================================== */
:root {
    --primary: #1e40af;
    --primary-dark: #1e3a8a;
    --primary-light: #3b82f6;
    --secondary: #059669;
    --accent: #d97706;
    --dark: #1f2937;
    --dark-light: #6b7280;
    --light: #f3f4f6;
    --white: #FFFFFF;
    --gradient-1: linear-gradient(135deg, #1e40af 0%, #1e3a8a 100%);
    --gradient-2: linear-gradient(135deg, #059669 0%, #047857 100%);
    --gradient-3: linear-gradient(135deg, #0891b2 0%, #0e7490 100%);
    --gradient-hero: linear-gradient(135deg, #1e3a8a 0%, #1e40af 50%, #3b82f6 100%);
    
    /* Typography */
    --font-primary: 'Noto Sans KR', sans-serif;
    --font-secondary: 'Noto Serif KR', serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* Transitions */
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    color: var(--dark);
    line-height: 1.7;
    overflow-x: hidden;
    background: var(--white);
}

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

section {
    padding: var(--spacing-xl) 0;
}

/* ========================================
   Hero Section - 创新设计
   ======================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-hero);
    overflow: hidden;
    color: var(--white);
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

/* Video Background */
.hero-video {
    position: absolute;
    top: 50%;
    left: 50%;
    min-width: 100%;
    min-height: 100%;
    width: auto;
    height: auto;
    transform: translate(-50%, -50%);
    object-fit: cover;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(30, 58, 138, 0.75);
    backdrop-filter: blur(2px);
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
    padding: var(--spacing-md);
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: var(--spacing-md);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.hero-title {
    font-family: var(--font-secondary);
    font-size: 4rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.hero-title .title-line {
    display: block;
}

.hero-title .highlight {
    background: linear-gradient(90deg, #FDCB6E, #FD79A8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.2rem;
    line-height: 1.8;
    margin-bottom: var(--spacing-lg);
    opacity: 0.95;
    font-weight: 300;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

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

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    font-family: var(--font-secondary);
    line-height: 1;
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: 0.9rem;
    opacity: 0.9;
    font-weight: 300;
}

.hero-cta {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: var(--white);
    color: var(--primary);
    padding: 1.2rem 3rem;
    border: none;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
}

.hero-cta:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 50px rgba(0, 0, 0, 0.3);
}

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    opacity: 0.8;
    animation: bounce 2s infinite;
}

.mouse {
    width: 24px;
    height: 40px;
    border: 2px solid var(--white);
    border-radius: 20px;
    position: relative;
}

.mouse::before {
    content: '';
    position: absolute;
    width: 4px;
    height: 8px;
    background: var(--white);
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    border-radius: 2px;
    animation: scroll 2s infinite;
}

@keyframes scroll {
    0% { opacity: 1; transform: translateX(-50%) translateY(0); }
    100% { opacity: 0; transform: translateX(-50%) translateY(10px); }
}

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

.scroll-indicator span {
    font-size: 0.85rem;
    font-weight: 300;
}

/* ========================================
   Section Headers
   ======================================== */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.section-tag {
    display: inline-block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--primary);
    letter-spacing: 2px;
    margin-bottom: var(--spacing-sm);
    position: relative;
    padding: 0 var(--spacing-md);
}

.section-tag::before,
.section-tag::after {
    content: '';
    position: absolute;
    top: 50%;
    width: 40px;
    height: 1px;
    background: var(--primary);
}

.section-tag::before {
    left: -50px;
}

.section-tag::after {
    right: -50px;
}

.section-title {
    font-family: var(--font-secondary);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: var(--spacing-sm);
}

.section-desc {
    font-size: 1.1rem;
    color: var(--dark-light);
    max-width: 600px;
    margin: 0 auto;
}

/* ========================================
   About Section
   ======================================== */
.about {
    background: var(--light);
}

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

.about-card {
    background: var(--white);
    padding: var(--spacing-lg);
    border-radius: 20px;
    box-shadow: 0 5px 30px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

.about-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
}

.card-icon {
    width: 70px;
    height: 70px;
    background: var(--gradient-1);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
    font-size: 2rem;
    color: var(--white);
}

.about-card:nth-child(2) .card-icon {
    background: var(--gradient-2);
}

.about-card:nth-child(3) .card-icon {
    background: var(--gradient-3);
}

.about-card h3 {
    font-family: var(--font-secondary);
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--dark);
}

.about-card p {
    color: var(--dark-light);
    line-height: 1.8;
}

/* ========================================
   Categories Section
   ======================================== */
.categories {
    background: var(--white);
}

.category-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
    margin-bottom: var(--spacing-xl);
}

.category-row.reverse {
    direction: rtl;
}

.category-row.reverse > * {
    direction: ltr;
}

.category-image {
    position: relative;
}

.image-placeholder {
    width: 100%;
    aspect-ratio: 1;
    border-radius: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 8rem;
    color: rgba(255, 255, 255, 0.9);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

.category-content {
    padding: var(--spacing-md);
}

.category-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    background: var(--primary-light);
    color: var(--primary-dark);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.category-content h3 {
    font-family: var(--font-secondary);
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
    color: var(--dark);
}

.category-content p {
    color: var(--dark-light);
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
}

.category-features {
    list-style: none;
}

.category-features li {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--dark-light);
    margin-bottom: var(--spacing-sm);
}

.category-features i {
    color: var(--primary);
    font-size: 1rem;
}

/* ========================================
   How It Works Section
   ======================================== */
.how-it-works {
    background: var(--light);
}

.steps {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.step {
    flex: 1;
    min-width: 250px;
    max-width: 300px;
    background: var(--white);
    padding: var(--spacing-lg);
    border-radius: 20px;
    text-align: center;
    position: relative;
    box-shadow: 0 5px 30px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

.step:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
}

.step-number {
    position: absolute;
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 50px;
    background: var(--gradient-1);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.2rem;
    box-shadow: 0 5px 20px rgba(102, 126, 234, 0.4);
}

.step:nth-child(3) .step-number {
    background: var(--gradient-2);
}

.step:nth-child(5) .step-number {
    background: var(--gradient-3);
}

.step-icon {
    font-size: 3rem;
    color: var(--primary);
    margin: var(--spacing-md) 0;
}

.step h3 {
    font-family: var(--font-secondary);
    font-size: 1.3rem;
    margin-bottom: var(--spacing-sm);
    color: var(--dark);
}

.step p {
    color: var(--dark-light);
    line-height: 1.6;
}

.step-arrow {
    font-size: 2rem;
    color: var(--primary-light);
}

/* ========================================
   Testimonials Section
   ======================================== */
.testimonials {
    background: var(--white);
}

.testimonial-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-md);
}

.testimonial-card {
    background: var(--light);
    padding: var(--spacing-lg);
    border-radius: 20px;
    transition: var(--transition);
    border: 2px solid transparent;
}

.testimonial-card:hover {
    border-color: var(--primary-light);
    transform: translateY(-5px);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

.rating {
    display: flex;
    gap: 5px;
    margin-bottom: var(--spacing-md);
    color: var(--accent);
    font-size: 1.1rem;
}

.testimonial-text {
    color: var(--dark-light);
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.author-avatar {
    width: 50px;
    height: 50px;
    background: var(--gradient-1);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.2rem;
}

.testimonial-card:nth-child(2n) .author-avatar {
    background: var(--gradient-2);
}

.testimonial-card:nth-child(3n) .author-avatar {
    background: var(--gradient-3);
}

.author-name {
    font-weight: 600;
    color: var(--dark);
}

.author-location {
    font-size: 0.9rem;
    color: var(--dark-light);
}

/* ========================================
   Stats Section
   ======================================== */
.stats-section {
    background: var(--gradient-hero);
    color: var(--white);
    padding: var(--spacing-xl) 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
}

.stat-box {
    text-align: center;
    padding: var(--spacing-md);
}

.stat-box i {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    opacity: 0.9;
}

.stat-value {
    font-size: 3.5rem;
    font-weight: 700;
    font-family: var(--font-secondary);
    line-height: 1;
    margin-bottom: var(--spacing-sm);
}

.stat-text {
    font-size: 1rem;
    opacity: 0.9;
    font-weight: 300;
}

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

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

.faq-item {
    background: var(--white);
    border-radius: 15px;
    margin-bottom: var(--spacing-md);
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

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

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

.faq-question h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--dark);
}

.faq-question i {
    color: var(--primary);
    transition: var(--transition);
}

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

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

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

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

/* ========================================
   Final CTA Section
   ======================================== */
.final-cta {
    background: var(--white);
    padding: var(--spacing-xl) 0;
}

.cta-content {
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.cta-content h2 {
    font-family: var(--font-secondary);
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
    color: var(--dark);
}

.cta-content p {
    font-size: 1.2rem;
    color: var(--dark-light);
    margin-bottom: var(--spacing-lg);
}

.cta-button {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: var(--gradient-1);
    color: var(--white);
    padding: 1.2rem 3rem;
    border: none;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 10px 40px rgba(102, 126, 234, 0.3);
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 50px rgba(102, 126, 234, 0.4);
}

.cta-notice {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-md);
    color: var(--dark-light);
    font-size: 0.95rem;
}

.cta-notice i {
    color: var(--primary);
}

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

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

.footer-section h4 {
    font-family: var(--font-secondary);
    font-size: 1.2rem;
    margin-bottom: var(--spacing-md);
}

.footer-section p {
    opacity: 0.8;
    line-height: 1.8;
}

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

.footer-section ul li {
    margin-bottom: var(--spacing-sm);
}

.footer-section ul li a {
    color: var(--white);
    opacity: 0.8;
    text-decoration: none;
    transition: var(--transition);
}

.footer-section ul li a:hover {
    opacity: 1;
    color: var(--primary-light);
}

.footer-section ul li i {
    margin-right: var(--spacing-xs);
    color: var(--primary-light);
}

.social-links {
    display: flex;
    gap: var(--spacing-sm);
}

.social-links a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    text-decoration: none;
    transition: var(--transition);
}

.social-links a:hover {
    background: var(--primary);
    transform: translateY(-3px);
}

.footer-bottom {
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.footer-bottom p {
    opacity: 0.7;
    font-size: 0.9rem;
}

.footer-links {
    display: flex;
    gap: var(--spacing-md);
    font-size: 0.9rem;
}

.footer-links a {
    color: var(--white);
    opacity: 0.7;
    text-decoration: none;
    transition: var(--transition);
}

.footer-links a:hover {
    opacity: 1;
}

.footer-links span {
    opacity: 0.5;
}

/* ========================================
   Fixed Bottom CTA Button
   ======================================== */
.fixed-cta-button {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: var(--spacing-md);
    z-index: 1000;
    display: flex;
    justify-content: center;
    transition: var(--transition);
}

.fixed-cta-button button {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: var(--gradient-2);
    color: var(--white);
    padding: 1rem 2.5rem;
    border: none;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.fixed-cta-button.hidden {
    transform: translateY(100%);
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 1024px) {
    .hero-title {
        font-size: 3rem;
    }
    
    .category-row {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .category-row.reverse {
        direction: ltr;
    }
    
    .image-placeholder {
        font-size: 6rem;
    }
}

@media (max-width: 768px) {
    :root {
        --spacing-xs: 0.4rem;
        --spacing-sm: 0.8rem;
        --spacing-md: 1.2rem;
        --spacing-lg: 2rem;
        --spacing-xl: 3rem;
    }
    
    section {
        padding: var(--spacing-lg) 0;
    }
    
    .container {
        padding: 0 var(--spacing-md);
    }
    
    /* Hero Section - 手机端优化 */
    .hero {
        min-height: 90vh;
        padding: var(--spacing-lg) 0;
    }
    
    .hero-content {
        padding: var(--spacing-sm);
    }
    
    .hero-badge {
        font-size: 0.8rem;
        padding: 0.4rem 1rem;
        margin-bottom: var(--spacing-sm);
    }
    
    .hero-title {
        font-size: 2rem;
        line-height: 1.3;
        margin-bottom: var(--spacing-sm);
    }
    
    .hero-subtitle {
        font-size: 0.9rem;
        line-height: 1.6;
        margin-bottom: var(--spacing-md);
    }
    
    .hero-subtitle br {
        display: none;
    }
    
    .hero-stats {
        flex-direction: row;
        justify-content: center;
        gap: var(--spacing-md);
        margin-bottom: var(--spacing-md);
        flex-wrap: wrap;
    }
    
    .stat-item {
        flex: 0 1 auto;
        min-width: 80px;
    }
    
    .stat-number {
        font-size: 1.8rem;
        margin-bottom: 0.25rem;
    }
    
    .stat-label {
        font-size: 0.75rem;
    }
    
    .hero-cta {
        padding: 0.9rem 2rem;
        font-size: 0.95rem;
        gap: 0.6rem;
    }
    
    .scroll-indicator {
        display: none;
    }
    
    /* Section Headers - 居中紧凑 */
    .section-header {
        margin-bottom: var(--spacing-md);
        text-align: center;
    }
    
    .section-tag {
        font-size: 0.75rem;
        padding: 0;
        margin-bottom: 0.5rem;
    }
    
    .section-tag::before,
    .section-tag::after {
        display: none;
    }
    
    .section-title {
        font-size: 1.6rem;
        line-height: 1.4;
        margin-bottom: 0.5rem;
    }
    
    .section-desc {
        font-size: 0.95rem;
        line-height: 1.6;
    }
    
    /* About Cards - 紧凑布局 */
    .about-content {
        gap: var(--spacing-sm);
    }
    
    .about-card {
        padding: var(--spacing-md);
        border-radius: 15px;
        text-align: center;
    }
    
    .card-icon {
        width: 50px;
        height: 50px;
        font-size: 1.5rem;
        margin: 0 auto var(--spacing-sm);
        border-radius: 15px;
    }
    
    .about-card h3 {
        font-size: 1.2rem;
        margin-bottom: 0.6rem;
    }
    
    .about-card p {
        font-size: 0.9rem;
        line-height: 1.6;
    }
    
    /* Category - 紧凑排版 */
    .category-content {
        padding: var(--spacing-sm);
        text-align: center;
    }
    
    .category-badge {
        font-size: 0.75rem;
        padding: 0.4rem 1rem;
        margin-bottom: var(--spacing-sm);
    }
    
    .category-content h3 {
        font-size: 1.5rem;
        margin-bottom: var(--spacing-sm);
    }
    
    .category-content p {
        font-size: 0.9rem;
        line-height: 1.6;
        margin-bottom: var(--spacing-sm);
    }
    
    .category-features {
        text-align: left;
        max-width: 300px;
        margin: 0 auto;
    }
    
    .category-features li {
        font-size: 0.85rem;
        margin-bottom: 0.4rem;
    }
    
    .image-placeholder {
        font-size: 5rem;
        border-radius: 20px;
    }
    
    /* Steps - 垂直紧凑布局 */
    .steps {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .step {
        max-width: 100%;
        padding: var(--spacing-md);
        border-radius: 15px;
        margin-bottom: var(--spacing-sm);
    }
    
    .step-number {
        width: 40px;
        height: 40px;
        font-size: 1rem;
        top: -15px;
    }
    
    .step-icon {
        font-size: 2.5rem;
        margin: var(--spacing-sm) 0;
    }
    
    .step h3 {
        font-size: 1.1rem;
        margin-bottom: 0.4rem;
    }
    
    .step p {
        font-size: 0.9rem;
    }
    
    .step-arrow {
        display: none;
    }
    
    /* Testimonials - 紧凑卡片 */
    .testimonial-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }
    
    .testimonial-card {
        padding: var(--spacing-md);
        border-radius: 15px;
    }
    
    .rating {
        font-size: 1rem;
        margin-bottom: var(--spacing-sm);
        justify-content: center;
    }
    
    .testimonial-text {
        font-size: 0.9rem;
        line-height: 1.7;
        margin-bottom: var(--spacing-sm);
    }
    
    .author-avatar {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }
    
    .author-name {
        font-size: 0.95rem;
    }
    
    .author-location {
        font-size: 0.8rem;
    }
    
    /* Stats Section - 紧凑居中 */
    .stats-section {
        padding: var(--spacing-lg) 0;
    }
    
    .stats-grid {
        gap: var(--spacing-sm);
    }
    
    .stat-box {
        padding: var(--spacing-sm);
    }
    
    .stat-box i {
        font-size: 2rem;
        margin-bottom: var(--spacing-sm);
    }
    
    .stat-value {
        font-size: 2.5rem;
        margin-bottom: 0.5rem;
    }
    
    .stat-text {
        font-size: 0.9rem;
    }
    
    /* FAQ - 紧凑布局 */
    .faq-item {
        border-radius: 12px;
        margin-bottom: var(--spacing-sm);
    }
    
    .faq-question {
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    .faq-question h3 {
        font-size: 0.95rem;
        line-height: 1.5;
    }
    
    .faq-answer p {
        padding: 0 var(--spacing-md) var(--spacing-sm);
        font-size: 0.9rem;
        line-height: 1.7;
    }
    
    /* Final CTA - 居中紧凑 */
    .final-cta {
        padding: var(--spacing-lg) 0;
    }
    
    .cta-content h2 {
        font-size: 1.8rem;
        margin-bottom: var(--spacing-sm);
    }
    
    .cta-content p {
        font-size: 0.95rem;
        line-height: 1.6;
        margin-bottom: var(--spacing-md);
    }
    
    .cta-content p br {
        display: none;
    }
    
    .cta-button {
        padding: 0.9rem 2rem;
        font-size: 0.95rem;
        gap: 0.6rem;
    }
    
    .cta-notice {
        font-size: 0.8rem;
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .cta-notice span {
        font-size: 0.75rem;
    }
    
    /* Footer - 紧凑布局 */
    .footer {
        padding: var(--spacing-md) 0;
    }
    
    .footer-content {
        gap: var(--spacing-md);
        text-align: center;
    }
    
    .footer-section {
        margin-bottom: var(--spacing-sm);
    }
    
    .footer-section h4 {
        font-size: 1rem;
        margin-bottom: var(--spacing-sm);
    }
    
    .footer-section p {
        font-size: 0.85rem;
        line-height: 1.6;
    }
    
    .footer-section ul li {
        font-size: 0.85rem;
        margin-bottom: 0.4rem;
    }
    
    .social-links {
        justify-content: center;
    }
    
    .social-links a {
        width: 36px;
        height: 36px;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
        padding-top: var(--spacing-sm);
        gap: var(--spacing-sm);
    }
    
    .footer-bottom p {
        font-size: 0.8rem;
    }
    
    .footer-links {
        font-size: 0.8rem;
        gap: var(--spacing-sm);
    }
    
    /* Fixed CTA Button - 紧凑居中 */
    .fixed-cta-button {
        padding: var(--spacing-sm);
    }
    
    .fixed-cta-button button {
        padding: 0.85rem 1.8rem;
        font-size: 0.9rem;
        gap: 0.5rem;
    }
    
    .fixed-cta-button button span {
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-xs: 0.3rem;
        --spacing-sm: 0.6rem;
        --spacing-md: 1rem;
        --spacing-lg: 1.5rem;
        --spacing-xl: 2.5rem;
    }
    
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    /* Hero - 超小屏优化 */
    .hero-title {
        font-size: 1.6rem;
    }
    
    .hero-subtitle {
        font-size: 0.85rem;
    }
    
    .hero-stats {
        gap: var(--spacing-sm);
    }
    
    .stat-item {
        min-width: 70px;
    }
    
    .stat-number {
        font-size: 1.5rem;
    }
    
    .stat-label {
        font-size: 0.7rem;
    }
    
    .hero-cta {
        padding: 0.8rem 1.6rem;
        font-size: 0.9rem;
    }
    
    /* Sections - 更紧凑 */
    .section-title {
        font-size: 1.4rem;
    }
    
    .section-desc {
        font-size: 0.85rem;
    }
    
    .about-content {
        grid-template-columns: 1fr;
    }
    
    .category-content h3 {
        font-size: 1.3rem;
    }
    
    .image-placeholder {
        font-size: 4rem;
    }
    
    /* Stats */
    .stat-value {
        font-size: 2rem;
    }
    
    /* Final CTA */
    .cta-content h2 {
        font-size: 1.5rem;
    }
    
    .cta-content p {
        font-size: 0.85rem;
    }
    
    .cta-button {
        padding: 0.8rem 1.6rem;
        font-size: 0.9rem;
    }
    
    /* Fixed Button - 简化文字 */
    .fixed-cta-button button span {
        display: none;
    }
    
    .fixed-cta-button button::after {
        content: '무료 신청';
    }
    
    .fixed-cta-button button {
        padding: 0.8rem 1.5rem;
        font-size: 0.9rem;
    }
}