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

:root {
    /* Color Palette */
    --primary-color: #1a4d7a;
    --primary-dark: #0f3554;
    --primary-light: #2d6aa3;
    --accent-gold: #d4a574;
    --accent-gold-light: #e8c9a6;
    --text-dark: #1a1a1a;
    --text-medium: #4a4a4a;
    --text-light: #7a7a7a;
    --bg-white: #ffffff;
    --bg-cream: #faf8f5;
    --bg-light: #f5f5f5;
    --border-color: #e0e0e0;
    --success-green: #28a745;
    --line-green: #00b900;
    
    /* Typography */
    --font-sans: 'Noto Sans JP', sans-serif;
    --font-serif: 'Noto Serif JP', serif;
    
    /* Spacing */
    --section-padding: 80px 0;
    --container-padding: 0 20px;
    
    /* Effects */
    --transition: all 0.3s ease;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.16);
}

body {
    font-family: var(--font-sans);
    color: var(--text-dark);
    background-color: var(--bg-white);
    line-height: 1.7;
    font-size: 16px;
    overflow-x: hidden;
}

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

/* ==========================================
   Header
   ========================================== */
.header {
    background: var(--bg-white);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
    padding: 20px 0;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 700;
    font-size: 18px;
    color: var(--primary-color);
}

.logo i {
    font-size: 24px;
    color: var(--accent-gold);
}

.cta-button-small {
    background: var(--line-green);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 50px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-sans);
    font-size: 14px;
}

.cta-button-small:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* ==========================================
   Hero Section
   ========================================== */
.hero {
    position: relative;
    padding: 100px 0 120px;
    background: linear-gradient(135deg, #0f3554 0%, #1a4d7a 50%, #2d6aa3 100%);
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.1;
}

.hero-decoration {
    position: absolute;
    top: -50%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--accent-gold) 0%, transparent 70%);
    border-radius: 50%;
    animation: float 20s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(-30px, 30px) scale(1.1); }
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    padding: 10px 20px;
    border-radius: 50px;
    color: white;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 24px;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.hero-badge i {
    color: var(--accent-gold);
}

.hero-title {
    font-family: var(--font-serif);
    font-size: 52px;
    font-weight: 900;
    color: white;
    line-height: 1.3;
    margin-bottom: 24px;
}

.title-highlight {
    color: var(--accent-gold);
    position: relative;
    display: inline-block;
}

.hero-subtitle {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 32px;
    line-height: 1.8;
}

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

.hero-features {
    display: flex;
    gap: 24px;
    margin-bottom: 40px;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 8px;
    color: white;
    font-size: 14px;
    font-weight: 500;
}

.feature-item i {
    color: var(--accent-gold);
    font-size: 20px;
}

.hero-cta {
    background: var(--line-green);
    color: white;
    border: none;
    padding: 20px 48px;
    border-radius: 50px;
    font-size: 18px;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 12px;
    font-family: var(--font-sans);
    box-shadow: 0 8px 24px rgba(0, 185, 0, 0.3);
}

.hero-cta:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 32px rgba(0, 185, 0, 0.4);
}

.hero-note {
    color: rgba(255, 255, 255, 0.8);
    font-size: 14px;
    margin-top: 16px;
}

/* Hero Visual */
.hero-visual {
    position: relative;
    height: 500px;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.book-stack {
    position: relative;
    width: 100%;
    height: 100%;
}

.book {
    position: absolute;
    width: 180px;
    height: 260px;
    background: linear-gradient(135deg, var(--accent-gold) 0%, var(--accent-gold-light) 100%);
    border-radius: 8px;
    box-shadow: var(--shadow-lg);
    border-left: 12px solid var(--primary-dark);
}

.book::before {
    content: '';
    position: absolute;
    top: 20px;
    left: 20px;
    right: 20px;
    bottom: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 4px;
}

.book-1 {
    top: 50px;
    left: 50px;
    transform: rotate(-8deg);
    animation: bookFloat1 6s ease-in-out infinite;
}

.book-2 {
    top: 100px;
    right: 80px;
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary-color) 100%);
    transform: rotate(5deg);
    animation: bookFloat2 6s ease-in-out infinite;
}

.book-3 {
    bottom: 80px;
    left: 120px;
    background: linear-gradient(135deg, #2d6aa3 0%, #1a4d7a 100%);
    transform: rotate(-3deg);
    animation: bookFloat3 6s ease-in-out infinite;
}

@keyframes bookFloat1 {
    0%, 100% { transform: rotate(-8deg) translateY(0); }
    50% { transform: rotate(-8deg) translateY(-20px); }
}

@keyframes bookFloat2 {
    0%, 100% { transform: rotate(5deg) translateY(0); }
    50% { transform: rotate(5deg) translateY(-15px); }
}

@keyframes bookFloat3 {
    0%, 100% { transform: rotate(-3deg) translateY(0); }
    50% { transform: rotate(-3deg) translateY(-25px); }
}

.floating-elements {
    position: absolute;
    width: 100%;
    height: 100%;
}

.floating-elements i {
    position: absolute;
    color: rgba(255, 255, 255, 0.3);
    font-size: 32px;
}

.floating-1 {
    top: 20%;
    left: 10%;
    animation: floatIcon 4s ease-in-out infinite;
}

.floating-2 {
    top: 60%;
    right: 15%;
    animation: floatIcon 5s ease-in-out infinite;
}

.floating-3 {
    bottom: 20%;
    right: 30%;
    animation: floatIcon 6s ease-in-out infinite;
}

@keyframes floatIcon {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(10deg); }
}

/* ==========================================
   Section Headers
   ========================================== */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-family: var(--font-serif);
    font-size: 42px;
    font-weight: 900;
    color: var(--primary-color);
    margin-bottom: 16px;
}

.section-subtitle {
    font-size: 18px;
    color: var(--text-light);
}

/* ==========================================
   Campaign Intro
   ========================================== */
.campaign-intro {
    padding: var(--section-padding);
    background: var(--bg-cream);
}

.intro-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 60px;
    align-items: center;
}

.intro-text h3 {
    font-family: var(--font-serif);
    font-size: 28px;
    color: var(--primary-color);
    margin-bottom: 24px;
    font-weight: 700;
}

.intro-text p {
    margin-bottom: 20px;
    color: var(--text-medium);
    font-size: 16px;
}

.intro-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 40px;
}

.stat-item {
    text-align: center;
    padding: 24px;
    background: white;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
}

.stat-number {
    font-family: var(--font-serif);
    font-size: 36px;
    font-weight: 900;
    color: var(--accent-gold);
    margin-bottom: 8px;
}

.stat-label {
    font-size: 14px;
    color: var(--text-medium);
    font-weight: 500;
}

.intro-image {
    border-radius: 20px;
    height: 400px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.image-placeholder {
    background: linear-gradient(135deg, var(--primary-light), var(--primary-color));
    border-radius: 20px;
    height: 400px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: white;
    box-shadow: var(--shadow-md);
}

.image-placeholder i {
    font-size: 80px;
    margin-bottom: 20px;
    opacity: 0.9;
}

.image-placeholder p {
    font-size: 18px;
    font-weight: 600;
}

/* ==========================================
   About Author
   ========================================== */
.about-author {
    padding: var(--section-padding);
    background: white;
}

.author-content {
    display: grid;
    grid-template-columns: 400px 1fr;
    gap: 60px;
    align-items: start;
}

.author-image {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    height: 400px;
    box-shadow: var(--shadow-md);
}

.author-placeholder {
    height: 400px;
}

.author-badge {
    position: absolute;
    bottom: -20px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--accent-gold);
    color: white;
    padding: 12px 24px;
    border-radius: 50px;
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    box-shadow: var(--shadow-md);
}

.author-name {
    font-family: var(--font-serif);
    font-size: 36px;
    font-weight: 900;
    color: var(--primary-color);
    margin-bottom: 8px;
}

.author-title {
    font-size: 18px;
    color: var(--accent-gold);
    font-weight: 600;
    margin-bottom: 32px;
}

.author-description p {
    margin-bottom: 20px;
    color: var(--text-medium);
    line-height: 1.9;
}

.author-description strong {
    color: var(--primary-color);
    font-weight: 700;
}

.author-quote {
    background: var(--bg-cream);
    padding: 32px;
    border-radius: 12px;
    margin: 32px 0;
    border-left: 4px solid var(--accent-gold);
    position: relative;
}

.author-quote i {
    color: var(--accent-gold);
    opacity: 0.3;
    font-size: 24px;
}

.author-quote .fa-quote-left {
    position: absolute;
    top: 20px;
    left: 20px;
}

.author-quote .fa-quote-right {
    position: absolute;
    bottom: 20px;
    right: 20px;
}

.author-quote p {
    font-family: var(--font-serif);
    font-size: 20px;
    color: var(--primary-color);
    font-weight: 600;
    text-align: center;
    margin: 0;
    padding: 0 40px;
}

/* ==========================================
   Book Categories
   ========================================== */
.book-categories {
    padding: var(--section-padding);
    background: var(--bg-cream);
}

.category-block {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    margin-bottom: 80px;
    padding: 60px;
    background: white;
    border-radius: 24px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.category-block:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.category-block:last-child {
    margin-bottom: 0;
}

.category-image {
    border-radius: 20px;
    overflow: hidden;
    height: 320px;
    box-shadow: var(--shadow-sm);
}

.category-placeholder {
    height: 320px;
}

.category-icon-label {
    font-size: 16px;
    font-weight: 600;
    margin-top: 16px;
}

.category-number {
    font-family: var(--font-serif);
    font-size: 72px;
    font-weight: 900;
    color: var(--accent-gold);
    opacity: 0.2;
    line-height: 1;
    margin-bottom: 16px;
}

.category-title {
    font-family: var(--font-serif);
    font-size: 32px;
    font-weight: 900;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.category-description {
    color: var(--text-medium);
    font-size: 16px;
    line-height: 1.8;
    margin-bottom: 24px;
}

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

.category-features li {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
    color: var(--text-dark);
    font-weight: 500;
}

.category-features i {
    color: var(--success-green);
    font-size: 18px;
}

.right-image {
    grid-template-columns: 1fr 1fr;
}

.right-image .category-text {
    order: 1;
}

.right-image .category-image {
    order: 2;
}

/* ==========================================
   How It Works
   ========================================== */
.how-it-works {
    padding: var(--section-padding);
    background: white;
}

.steps {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 40px;
    max-width: 1000px;
    margin: 0 auto;
}

.step {
    flex: 1;
    text-align: center;
    padding: 40px 30px;
    background: var(--bg-cream);
    border-radius: 20px;
    transition: var(--transition);
}

.step:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-md);
}

.step-number {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    color: white;
    font-size: 32px;
}

.step-title {
    font-family: var(--font-serif);
    font-size: 22px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 12px;
}

.step-description {
    color: var(--text-medium);
    font-size: 14px;
    line-height: 1.6;
}

.step-arrow {
    color: var(--accent-gold);
    font-size: 24px;
    flex-shrink: 0;
}

/* ==========================================
   Testimonials
   ========================================== */
.testimonials {
    padding: var(--section-padding);
    background: var(--bg-cream);
}

.testimonial-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.testimonial-card {
    background: white;
    padding: 32px;
    border-radius: 20px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.testimonial-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.testimonial-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 16px;
}

.testimonial-avatar {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--accent-gold), var(--accent-gold-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 24px;
}

.testimonial-author h4 {
    font-weight: 700;
    color: var(--text-dark);
    font-size: 16px;
    margin-bottom: 4px;
}

.testimonial-author p {
    font-size: 13px;
    color: var(--text-light);
}

.testimonial-rating {
    margin-bottom: 16px;
}

.testimonial-rating i {
    color: #ffc107;
    font-size: 14px;
    margin-right: 2px;
}

.testimonial-text {
    color: var(--text-medium);
    font-size: 14px;
    line-height: 1.7;
    margin-bottom: 20px;
}

.testimonial-book {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--bg-cream);
    padding: 8px 16px;
    border-radius: 50px;
    font-size: 12px;
    color: var(--primary-color);
    font-weight: 600;
}

.testimonial-book i {
    color: var(--accent-gold);
}

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

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

.faq-item {
    background: var(--bg-cream);
    border-radius: 16px;
    margin-bottom: 20px;
    overflow: hidden;
    transition: var(--transition);
}

.faq-question {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 24px 32px;
    cursor: pointer;
    transition: var(--transition);
}

.faq-question:hover {
    background: rgba(212, 165, 116, 0.1);
}

.faq-question i:first-child {
    color: var(--accent-gold);
    font-size: 24px;
    flex-shrink: 0;
}

.faq-question h3 {
    flex: 1;
    font-size: 18px;
    font-weight: 700;
    color: var(--primary-color);
}

.faq-question i:last-child {
    color: var(--primary-color);
    font-size: 16px;
    transition: var(--transition);
}

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

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

.faq-item.active .faq-answer {
    max-height: 300px;
}

.faq-answer p {
    padding: 0 32px 24px 72px;
    color: var(--text-medium);
    line-height: 1.8;
}

/* ==========================================
   Final CTA
   ========================================== */
.final-cta {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    text-align: center;
}

.cta-title {
    font-family: var(--font-serif);
    font-size: 42px;
    font-weight: 900;
    color: white;
    margin-bottom: 16px;
}

.cta-subtitle {
    font-size: 20px;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 40px;
}

.cta-benefits {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin-top: 32px;
}

.benefit {
    display: flex;
    align-items: center;
    gap: 8px;
    color: white;
    font-weight: 600;
}

.benefit i {
    color: var(--accent-gold);
    font-size: 20px;
}

/* ==========================================
   Footer
   ========================================== */
.footer {
    background: var(--text-dark);
    color: rgba(255, 255, 255, 0.8);
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 60px;
    margin-bottom: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 700;
    font-size: 20px;
    color: white;
    margin-bottom: 16px;
}

.footer-logo i {
    font-size: 28px;
    color: var(--accent-gold);
}

.footer-brand p {
    font-size: 14px;
    line-height: 1.6;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
}

.footer-links a:hover {
    color: var(--accent-gold);
}

.footer-bottom {
    text-align: center;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.6);
}

/* ==========================================
   Fixed Bottom CTA
   ========================================== */
.fixed-bottom-cta {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 16px 20px;
    z-index: 999;
    transform: translateY(100%);
    animation: slideUp 0.5s ease forwards;
    animation-delay: 1s;
}

@keyframes slideUp {
    to { transform: translateY(0); }
}

.fixed-cta-button {
    width: 100%;
    max-width: 600px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    background: var(--line-green);
    color: white;
    border: none;
    padding: 18px 32px;
    border-radius: 50px;
    font-size: 18px;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font-sans);
    box-shadow: 0 4px 16px rgba(0, 185, 0, 0.3);
}

.fixed-cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 185, 0, 0.4);
}

/* ==========================================
   Responsive Design
   ========================================== */
@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .hero-visual {
        height: 350px;
    }
    
    .intro-content {
        grid-template-columns: 1fr;
    }
    
    .author-content {
        grid-template-columns: 1fr;
    }
    
    .category-block {
        grid-template-columns: 1fr;
        padding: 40px;
    }
    
    .right-image .category-text,
    .right-image .category-image {
        order: initial;
    }
    
    .testimonial-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 36px;
    }
    
    .hero-subtitle {
        font-size: 16px;
    }
    
    .hero-features {
        flex-direction: column;
        gap: 12px;
    }
    
    .section-title {
        font-size: 32px;
    }
    
    .steps {
        flex-direction: column;
        gap: 20px;
    }
    
    .step-arrow {
        transform: rotate(90deg);
    }
    
    .testimonial-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .intro-stats {
        grid-template-columns: 1fr;
    }
    
    .category-block {
        padding: 30px 20px;
    }
    
    .cta-benefits {
        flex-direction: column;
        gap: 16px;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 60px 0 80px;
    }
    
    .hero-title {
        font-size: 28px;
    }
    
    .hero-cta {
        padding: 16px 32px;
        font-size: 16px;
    }
    
    .section-title {
        font-size: 26px;
    }
    
    .category-title {
        font-size: 24px;
    }
    
    .author-name {
        font-size: 28px;
    }
    
    .cta-title {
        font-size: 28px;
    }
    
    .fixed-cta-button {
        font-size: 16px;
        padding: 16px 24px;
    }
}