/* Base Variables & Minimalist Japanese Style */
:root {
    --bg-color: #FAFBFC;
    --primary: #537FA0;
    --text: #22303C;
    --secondary: #93A1AD;
    --accent: #D97B66; /* The terracotta signature dot is only used in the logo SVG */
    --border-color: rgba(147, 161, 173, 0.2);
    
    --font-heading: 'LXGW WenKai Lite', serif;
    --font-body: 'Noto Sans SC', sans-serif;
    --font-ui: 'Schibsted Grotesk', sans-serif;
    --font-display: 'Instrument Serif', serif;
}

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

body {
    background-color: var(--bg-color);
    color: var(--text);
    font-family: var(--font-body);
    font-size: 15px;
    font-weight: 300;
    line-height: 1.8;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.en-display {
    font-family: var(--font-display);
    font-style: italic;
    font-weight: normal;
    color: var(--secondary);
    letter-spacing: 0.02em;
}

h1, h2, h3, h4 {
    font-family: var(--font-heading);
    font-weight: normal;
    color: var(--text);
}

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

a:hover {
    opacity: 0.7;
}

.container {
    width: 100%;
    max-width: 1040px;
    margin: 0 auto;
    padding: 0 40px;
}

/* Hairline Borders */
.border-top {
    border-top: 0.5px solid var(--border-color);
}
.border-bottom {
    border-bottom: 0.5px solid var(--border-color);
}

/* Nav */
.site-nav {
    padding: 30px 0;
    font-family: var(--font-ui);
    font-size: 13px;
    letter-spacing: 0.05em;
    animation: fadeIn 1s ease-out;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text);
}

.brand-name {
    font-family: var(--font-heading);
    font-size: 1.2rem;
}

.brand-name .en-display {
    font-size: 1.1rem;
    margin-left: 6px;
}

.nav-links {
    display: flex;
    gap: 30px;
}

.nav-links a {
    color: var(--secondary);
}

.nav-links a:hover {
    color: var(--primary);
}

/* Hero Section */
.hero {
    padding: 120px 0 160px;
    animation: fadeIn 1.5s ease-out;
}

.hero-content {
    max-width: 600px;
}

.hero h1 {
    font-size: 3.5rem;
    line-height: 1.1;
    margin-bottom: 20px;
}

.hero h1 .en-display {
    display: block;
    font-size: 4.5rem;
    margin-top: 10px;
}

.subtitle {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    color: var(--primary);
    margin-bottom: 30px;
}

.intro {
    font-size: 1.05rem;
    color: var(--secondary);
    margin-bottom: 50px;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    align-items: center;
}

/* Buttons */
.btn {
    font-family: var(--font-ui);
    font-size: 13px;
    letter-spacing: 0.05em;
    padding: 10px 24px;
    border-radius: 4px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background-color 0.4s ease, color 0.4s ease;
}

.btn-primary {
    background-color: var(--primary);
    color: var(--bg-color);
    border: 0.5px solid var(--primary);
}

.btn-primary:hover {
    background-color: transparent;
    color: var(--primary);
    opacity: 1;
}

.btn-secondary {
    background-color: transparent;
    color: var(--secondary);
    border: 0.5px solid var(--border-color);
}

.btn-secondary:hover {
    color: var(--text);
    border-color: var(--secondary);
    opacity: 1;
}

.btn-ghost {
    background-color: transparent;
    color: var(--primary);
    border: none;
    padding: 10px 0;
}

.btn-ghost:hover {
    opacity: 0.6;
}

.arrow {
    margin-left: 8px;
    transition: transform 0.3s ease;
}
.btn:hover .arrow {
    transform: translateX(4px);
}

/* Sections */
.section {
    padding: 80px 0;
}

.section-title {
    font-size: 1.8rem;
    margin-bottom: 60px;
    display: flex;
    align-items: baseline;
    gap: 15px;
}

.section-title .en-display {
    font-size: 2.2rem;
}

/* Asymmetric Grid */
.grid-asymmetric {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0;
}

.feature-item, .review-item {
    padding: 40px;
    transition: background-color 0.5s ease;
}

.feature-item:hover {
    background-color: #f5f7f9;
}

.feature-item:nth-child(odd) {
    border-right: 0.5px solid var(--border-color);
}

.feature-label {
    font-family: var(--font-display);
    color: var(--secondary);
    font-size: 2rem;
    display: block;
    margin-bottom: 15px;
}

.feature-item h3 {
    font-size: 1.2rem;
    margin-bottom: 15px;
}

.feature-item p {
    color: var(--secondary);
}

/* Pricing */
.pricing-table {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0;
    border: 0.5px solid var(--border-color);
}

.pricing-column {
    padding: 50px 40px;
    border-right: 0.5px solid var(--border-color);
    display: flex;
    flex-direction: column;
}

.pricing-column:last-child {
    border-right: none;
}

.pricing-column.highlight {
    background-color: #f0f3f5;
}

.pricing-header {
    margin-bottom: 30px;
}

.tier-name {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    display: block;
    margin-bottom: 10px;
}

.price {
    font-family: var(--font-ui);
    font-size: 2.5rem;
    color: var(--text);
}

.price .period {
    font-size: 1rem;
    color: var(--secondary);
}

.pricing-features {
    list-style: none;
    margin-bottom: 40px;
    flex-grow: 1;
}

.pricing-features li {
    font-size: 0.95rem;
    color: var(--secondary);
    padding: 10px 0;
    border-bottom: 0.5px dashed var(--border-color);
}

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

/* Reviews & FAQ */
.review-text {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    color: var(--text);
    margin-bottom: 20px;
}

.reviewer {
    font-family: var(--font-ui);
    font-size: 0.85rem;
    color: var(--secondary);
}

.faq-container {
    max-width: 700px;
}

.faq-item {
    padding: 30px 0;
}

.faq-item h4 {
    font-size: 1.1rem;
    margin-bottom: 15px;
}

.faq-item p {
    color: var(--secondary);
}

/* Footer */
.site-footer {
    padding: 80px 0 40px;
    font-family: var(--font-ui);
    font-size: 12px;
}

.footer-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 0.5px solid var(--border-color);
    padding-top: 40px;
}

.footer-nav {
    display: flex;
    gap: 30px;
}

.footer-nav a {
    color: var(--secondary);
}

.footer-nav a:hover {
    color: var(--primary);
}

.copyright {
    color: var(--secondary);
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 0 20px;
    }
    
    .nav-container {
        flex-direction: column;
        gap: 20px;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero h1 .en-display {
        font-size: 3rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .grid-asymmetric {
        grid-template-columns: 1fr;
    }
    
    .feature-item:nth-child(odd) {
        border-right: none;
    }
    
    .pricing-table {
        grid-template-columns: 1fr;
    }
    
    .pricing-column {
        border-right: none;
        border-bottom: 0.5px solid var(--border-color);
    }
    
    .footer-container {
        flex-direction: column;
        gap: 20px;
        align-items: flex-start;
    }
}

/* --- New SEO & UX Styles --- */

/* Breadcrumbs */
.breadcrumb {
    font-family: var(--font-ui);
    font-size: 13px;
    margin-bottom: 25px;
    color: var(--secondary);
    animation: fadeIn 0.8s ease-out;
}
.breadcrumb a {
    color: var(--primary);
    text-decoration: none;
}
.breadcrumb a:hover {
    text-decoration: underline;
    opacity: 0.8;
}
.breadcrumb span {
    color: var(--text);
}

/* Floating Top Button */
.floating-btn {
    position: fixed;
    bottom: 40px;
    right: 40px;
    width: 48px;
    height: 48px;
    background: var(--bg-color);
    border: 0.5px solid var(--border-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-size: 20px;
    cursor: pointer;
    opacity: 0.8;
    transition: all 0.3s ease;
    z-index: 1000;
    text-decoration: none;
    box-shadow: 0 4px 15px rgba(0,0,0,0.03);
}
.floating-btn:hover {
    opacity: 1;
    transform: translateY(-5px);
    background: var(--primary);
    color: var(--bg-color);
}

/* Next Article Navigation */
.next-article {
    margin-top: 60px;
    padding-top: 30px;
    border-top: 0.5px solid var(--border-color);
    text-align: right;
    font-family: var(--font-ui);
    font-size: 15px;
}
.next-article a {
    color: var(--text);
    transition: color 0.3s ease;
    display: inline-flex;
    align-items: center;
}
.next-article a:hover {
    color: var(--primary);
}

/* Hero Image Wrap */
.hero-image-wrap {
    margin-top: 60px;
    border-radius: 4px;
    overflow: hidden;
    max-width: 900px;
    margin-inline: auto;
    box-shadow: 0 10px 40px rgba(0,0,0,0.04);
    opacity: 0.95;
    animation: fadeIn 2s ease-out;
}
.hero-image-wrap img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
    max-height: 400px;
}