/* CSS Variables */
:root {
    /* Colors */
    --primary-color: #2C5282;
    --primary-dark: #1A365D;
    --secondary-color: #D69E2E;
    --accent-color: #E53E3E;
    --text-primary: #1A202C;
    --text-secondary: #4A5568;
    --text-light: #718096;
    --bg-primary: #FFFFFF;
    --bg-secondary: #F7FAFC;
    --bg-accent: #EDF2F7;
    --border-color: #E2E8F0;
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-accent: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    
    /* Typography */
    --font-primary: 'Noto Sans JP', sans-serif;
    --font-display: 'Playfair Display', serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    /* 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), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    overflow-x: hidden;
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
}

h1 { font-size: 3rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 2rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
}

a {
    text-decoration: none;
    color: var(--primary-color);
    transition: all 0.3s ease;
}

a:hover {
    color: var(--primary-dark);
}

/* Buttons */
.btn-primary {
    background: var(--gradient-primary);
    color: white;
    border: none;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-lg);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    box-shadow: var(--shadow-md);
}

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

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

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-md);
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--primary-color);
}

.nav-brand i {
    font-size: 1.5rem;
}

.nav-menu {
    display: flex;
    gap: var(--spacing-lg);
}

.nav-menu a {
    font-weight: 500;
    color: var(--text-primary);
    position: relative;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width 0.3s ease;
}

.nav-menu a:hover::after {
    width: 100%;
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: -2;
}

.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;
    z-index: -3;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(44, 82, 130, 0.8);
    z-index: -1;
}

.hero-pattern {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 25% 25%, rgba(255, 255, 255, 0.1) 2px, transparent 2px),
        radial-gradient(circle at 75% 75%, rgba(255, 255, 255, 0.1) 2px, transparent 2px);
    background-size: 60px 60px;
    background-position: 0 0, 30px 30px;
    animation: float 20s ease-in-out infinite;
    z-index: 0;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

.hero-content {
    text-align: center;
    color: white;
    max-width: 800px;
    margin: 0 auto;
}

.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: var(--radius-xl);
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: var(--spacing-md);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    line-height: 1.1;
}

.title-main {
    display: block;
    font-size: 2.5rem;
    opacity: 0.9;
}

.title-highlight {
    display: block;
    background: linear-gradient(45deg, #FFD700, #FFA500);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 4rem;
    margin-top: var(--spacing-xs);
}

.hero-subtitle {
    font-size: 1.25rem;
    opacity: 0.9;
    margin-bottom: var(--spacing-xl);
    line-height: 1.6;
    color: #fff;
}

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

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

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: #FFD700;
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: 0.875rem;
    opacity: 0.8;
}

.hero-cta {
    margin-top: var(--spacing-xl);
}

.cta-note {
    margin-top: var(--spacing-sm);
    font-size: 0.875rem;
    opacity: 0.8;
}

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

.section-header h2 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

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

/* About Section */
.about {
    padding: var(--spacing-2xl) 0;
    background: var(--bg-secondary);
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
}

.about-text h3 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

.mission-points {
    margin-top: var(--spacing-xl);
    display: grid;
    gap: var(--spacing-lg);
}

.point {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
}

.point i {
    font-size: 1.5rem;
    color: var(--secondary-color);
    margin-top: var(--spacing-xs);
    flex-shrink: 0;
}

.point h4 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-xs);
}

/* Honda Section */
.honda-section {
    padding: var(--spacing-2xl) 0;
    background: var(--bg-primary);
}

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

.honda-image {
    position: relative;
    text-align: center;
}

.profile-img {
    width: 280px;
    height: 350px;
    object-fit: cover;
    border-radius: 50%;
    box-shadow: var(--shadow-xl);
    border: 4px solid white;
}

.signature-badge {
    position: absolute;
    top: -10px;
    right: -10px;
    background: var(--gradient-secondary);
    color: white;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-lg);
    font-size: 0.875rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    box-shadow: var(--shadow-md);
}

.honda-info h2 {
    color: var(--primary-color);
    font-size: 2.5rem;
    margin-bottom: var(--spacing-xs);
}

.honda-title {
    color: var(--secondary-color);
    font-size: 1.25rem;
    font-weight: 500;
    margin-bottom: var(--spacing-md);
}

.honda-description p {
    margin-bottom: var(--spacing-md);
    line-height: 1.7;
}

.honda-achievements {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.achievement {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    background: var(--bg-accent);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--primary-color);
}

.achievement i {
    color: var(--secondary-color);
}

/* Books Section */
.books {
    padding: var(--spacing-2xl) 0;
    background: var(--bg-secondary);
}

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

.book-category {
    background: white;
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
}

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

.category-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-md);
    background: var(--gradient-accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.category-icon i {
    font-size: 2rem;
    color: white;
}

.book-category h3 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

.book-features {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    justify-content: center;
    margin-top: var(--spacing-md);
}

.feature {
    background: var(--bg-accent);
    color: var(--primary-color);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
}

/* Benefits Section */
.benefits {
    padding: var(--spacing-2xl) 0;
    background: var(--bg-primary);
}

.benefits-content {
    display: grid;
    gap: var(--spacing-2xl);
}

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

.benefit-item.reverse {
    direction: rtl;
}

.benefit-item.reverse * {
    direction: ltr;
}

.benefit-image img {
    width: 100%;
    height: 300px;
    object-fit: cover;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    transition: opacity 0.3s ease;
}

.benefit-image img[loading="lazy"] {
    opacity: 0;
}

.benefit-image img.loaded {
    opacity: 1;
}

.benefit-text h3 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

.benefit-text ul {
    list-style: none;
    margin-top: var(--spacing-md);
}

.benefit-text li {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
}

.benefit-text li i {
    color: var(--secondary-color);
    font-size: 1.125rem;
}

/* Features Section */
.features {
    padding: var(--spacing-2xl) 0;
    background: var(--bg-secondary);
}

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

.feature-card {
    background: white;
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

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

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.feature-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto var(--spacing-md);
    background: var(--gradient-accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.3s ease;
}

.feature-card:hover .feature-icon {
    transform: scale(1.1);
}

.feature-icon i {
    font-size: 1.8rem;
    color: white;
}

.feature-card h3 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

/* Statistics Section */
.statistics {
    padding: var(--spacing-2xl) 0;
    background: var(--gradient-primary);
    color: white;
}

.stats-content {
    text-align: center;
}

.stats-text {
    margin-bottom: var(--spacing-xl);
}

.stats-text h2 {
    color: white;
    margin-bottom: var(--spacing-md);
}

.stats-text p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.125rem;
}

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

.stat-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: var(--spacing-lg);
    border-radius: var(--radius-xl);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all 0.3s ease;
}

.stat-card:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-5px);
}

.stat-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
    color: #FFD700;
}

.stat-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: white;
    margin-bottom: var(--spacing-xs);
}

.stat-desc {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9rem;
}

/* Process Section */
.process {
    padding: var(--spacing-2xl) 0;
    background: var(--bg-primary);
}

.process-steps {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.step {
    text-align: center;
    max-width: 250px;
    position: relative;
}

.step-number {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 auto var(--spacing-md);
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
}

.step:hover .step-number {
    transform: scale(1.1);
    box-shadow: var(--shadow-lg);
}

.step-content h3 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.step-arrow {
    color: var(--primary-color);
    font-size: 1.5rem;
    margin: 0 var(--spacing-md);
}

.step-arrow i {
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateX(0); }
    40% { transform: translateX(-5px); }
    60% { transform: translateX(5px); }
}

/* Testimonials Section */
.testimonials {
    padding: var(--spacing-2xl) 0;
    background: var(--bg-secondary);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
}

.testimonial {
    background: white;
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
}

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

.testimonial-content {
    margin-bottom: var(--spacing-md);
}

.testimonial-content p {
    font-style: italic;
    line-height: 1.7;
    color: var(--text-secondary);
    position: relative;
}

.testimonial-content p::before {
    content: '"';
    font-size: 3rem;
    color: var(--primary-color);
    position: absolute;
    top: -10px;
    left: -15px;
    opacity: 0.3;
}

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

.author-info h4 {
    color: var(--primary-color);
    margin-bottom: 0;
}

.author-info span {
    color: var(--text-light);
    font-size: 0.875rem;
}

/* CTA Section */
.cta-section {
    padding: var(--spacing-2xl) 0;
    background: var(--gradient-primary);
    color: white;
    text-align: center;
}

.cta-content h2 {
    color: white;
    margin-bottom: var(--spacing-md);
}

.cta-content p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xl);
}

.cta-content .cta-note {
    margin-top: var(--spacing-md);
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.875rem;
}

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

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

.footer-section h3,
.footer-section h4 {
    color: white;
    margin-bottom: var(--spacing-md);
}

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

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

.footer-section a {
    color: rgba(255, 255, 255, 0.8);
    transition: color 0.3s ease;
}

.footer-section a:hover {
    color: white;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    padding-top: var(--spacing-md);
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
}

/* Fixed CTA Button */
.fixed-cta {
    position: fixed;
    bottom: var(--spacing-md);
    left: 50%;
    transform: translateX(-50%);
    z-index: 1000;
}

.btn-fixed {
    background: var(--gradient-secondary);
    color: white;
    border: none;
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-xl);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    box-shadow: var(--shadow-xl);
    transition: all 0.3s ease;
    animation: pulse 2s infinite;
}

.btn-fixed:hover {
    transform: translateY(-2px);
    box-shadow: 0 25px 35px -5px rgba(0, 0, 0, 0.2);
}

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

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
}

.modal-content {
    background-color: white;
    margin: 5% auto;
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    width: 90%;
    max-width: 600px;
    max-height: 80vh;
    overflow-y: auto;
    position: relative;
    box-shadow: var(--shadow-xl);
}

.close {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    color: var(--text-light);
    font-size: 2rem;
    font-weight: bold;
    cursor: pointer;
    transition: color 0.3s ease;
}

.close:hover {
    color: var(--text-primary);
}

.modal-body h3 {
    color: var(--primary-color);
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
}

.modal-body ul {
    margin-left: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

/* Tablet Design */
@media (max-width: 1024px) and (min-width: 769px) {
    .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-md);
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Mobile Design */
@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-xs);
    }
    
    /* 手机端隐藏header */
    .header {
        display: none;
    }
    
    .hero {
        min-height: 100vh;
        padding-top: 0;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .title-main {
        font-size: 2rem;
    }
    
    .title-highlight {
        font-size: 3rem;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .hero-video {
        min-height: 120%;
    }
    
    /* 手机端紧凑布局 */
    .features {
        padding: var(--spacing-lg) 0;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }
    
    .feature-card {
        padding: var(--spacing-md);
    }
    
    .statistics {
        padding: var(--spacing-lg) 0;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-sm);
    }
    
    .stat-card {
        padding: var(--spacing-md);
    }
    
    .process {
        padding: var(--spacing-lg) 0;
    }
    
    .process-steps {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .step-arrow {
        transform: rotate(90deg);
        margin: var(--spacing-sm) 0;
    }
    
    .about {
        padding: var(--spacing-lg) 0;
    }
    
    .honda-section {
        padding: var(--spacing-lg) 0;
    }
    
    .honda-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--spacing-md);
    }
    
    .honda-image {
        order: -1;
    }
    
    .books {
        padding: var(--spacing-lg) 0;
    }
    
    .benefits {
        padding: var(--spacing-lg) 0;
    }
    
    .benefit-item {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--spacing-sm);
    }
    
    .benefit-item.reverse {
        direction: ltr;
    }
    
    .benefit-image img {
        height: 200px;
    }
    
    .testimonials {
        padding: var(--spacing-lg) 0;
    }
    
    .cta-section {
        padding: var(--spacing-lg) 0;
    }
    
    .honda-achievements {
        justify-content: center;
        flex-wrap: wrap;
        gap: var(--spacing-xs);
    }
    
    .fixed-cta {
        left: var(--spacing-xs);
        right: var(--spacing-xs);
        transform: none;
        bottom: var(--spacing-xs);
    }
    
    .btn-fixed {
        width: 100%;
        justify-content: center;
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: 0.9rem;
    }
    
    .testimonials-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }
    
    .testimonial {
        padding: var(--spacing-md);
        margin-bottom: var(--spacing-sm);
    }
    
    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }
    h3 { font-size: 1.5rem; }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-xs);
    }
    
    .hero {
        min-height: 90vh;
        padding: var(--spacing-md) 0;
    }
    
    .hero-content {
        padding: var(--spacing-sm);
    }
    
    .hero-title {
        font-size: 1.8rem;
        margin-bottom: var(--spacing-sm);
    }
    
    .title-main {
        font-size: 1.3rem;
    }
    
    .title-highlight {
        font-size: 2.2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
        margin-bottom: var(--spacing-md);
    }
    
    .hero-stats {
        margin-bottom: var(--spacing-md);
        gap: var(--spacing-sm);
    }
    
    .stat-item {
        padding: var(--spacing-xs);
    }
    
    .stat-number {
        font-size: 1.8rem;
    }
    
    .stat-label {
        font-size: 0.8rem;
    }
    
    .hero-badge {
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: 0.8rem;
        margin-bottom: var(--spacing-sm);
    }
    
    /* 所有section更紧凑 */
    .features,
    .statistics,
    .process,
    .about,
    .honda-section,
    .books,
    .benefits,
    .testimonials,
    .cta-section {
        padding: var(--spacing-md) 0;
    }
    
    .section-header {
        margin-bottom: var(--spacing-md);
    }
    
    .section-header h2 {
        font-size: 1.5rem;
        margin-bottom: var(--spacing-xs);
    }
    
    .section-header p {
        font-size: 0.9rem;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-xs);
    }
    
    .stat-card {
        padding: var(--spacing-sm);
    }
    
    .stat-value {
        font-size: 2rem;
    }
    
    .features-grid,
    .testimonials-grid,
    .books-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-xs);
    }
    
    .feature-card,
    .testimonial,
    .book-category {
        padding: var(--spacing-sm);
    }
    
    .testimonial-content p {
        font-size: 0.9rem;
        line-height: 1.5;
    }
    
    .modal-content {
        margin: 5% auto;
        width: 98%;
        padding: var(--spacing-sm);
    }
    
    .benefit-image img {
        height: 180px;
    }
    
    .profile-img {
        width: 180px;
        height: 220px;
    }
    
    .honda-achievements {
        gap: var(--spacing-xs);
    }
    
    .achievement {
        font-size: 0.75rem;
        padding: 0.25rem 0.5rem;
    }
    
    .process-steps {
        gap: var(--spacing-sm);
    }
    
    .step-number {
        width: 50px;
        height: 50px;
        font-size: 1.2rem;
    }
    
    .step-content h3 {
        font-size: 1.1rem;
        margin-bottom: var(--spacing-xs);
    }
    
    .step-content p {
        font-size: 0.9rem;
    }
}

/* 极小屏幕优化 (320px以下) */
@media (max-width: 320px) {
    /* 固定CTA按钮在极小屏幕上显示为圆形图标 */
    .fixed-cta {
        right: var(--spacing-sm) !important;
        left: auto !important;
        bottom: var(--spacing-sm) !important;
        transform: none !important;
    }
    
    .btn-fixed {
        width: 50px !important;
        height: 50px;
        border-radius: 50% !important;
        padding: 0 !important;
        font-size: 1.1rem !important;
        display: flex !important;
        align-items: center;
        justify-content: center;
    }
    
    .btn-fixed span {
        display: none !important;
    }
    
    .btn-fixed i {
        margin: 0 !important;
    }
}

/* Mobile Menu Button - 不再需要，因为手机端隐藏了header */

/* Image Loading States */
img[loading="lazy"] {
    opacity: 0;
    transition: opacity 0.3s ease;
}

img.loaded {
    opacity: 1;
}

/* Video Fallback */
@media (prefers-reduced-motion: reduce) {
    .hero-video {
        display: none;
    }
    
    .hero-background {
        background: var(--gradient-primary);
    }
    
    .hero-pattern {
        animation: none;
    }
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    .hero-overlay {
        background: rgba(0, 0, 0, 0.8);
    }
    
    .stat-card {
        background: rgba(255, 255, 255, 0.2);
        border: 2px solid rgba(255, 255, 255, 0.5);
    }
}