:root {
    --bg-color: #F7F3EC;      /* Rice-paper white */
    --text-main: #1C1B18;     /* Ink black */
    --accent: #D8402F;        /* Vermilion */
    --text-muted: #B3AA98;    /* Faded ink */
    --hairline: #DDD4C3;      /* Hairline border */
    
    --font-cn: 'Noto Serif SC', serif;
    --font-en: 'Playfair Display', serif;
    --font-mono: 'JetBrains Mono', monospace;
    
    --transition: all 0.4s ease;
}

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

body {
    font-family: var(--font-cn);
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.8;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

.mono { font-family: var(--font-mono); }

.container { 
    width: 90%; 
    max-width: 1000px; 
    margin: 0 auto; 
}

h1, h2, h3 { 
    font-family: var(--font-cn); 
    font-weight: 900; 
}

/* Header */
.header {
    padding: 30px 0;
    border-bottom: 1px solid var(--hairline);
}
.nav-container { 
    display: flex; 
    justify-content: space-between; 
    align-items: center; 
}
.logo { 
    display: flex;
    align-items: center;
    gap: 15px;
}
.logo-seal {
    width: 32px;
    height: 32px;
}
.logo-text { 
    font-size: 24px; 
    font-weight: 900; 
    color: var(--text-main); 
}
.nav { display: flex; gap: 40px; }
.nav a { 
    text-decoration: none; 
    color: var(--text-muted); 
    font-size: 16px;
    font-weight: 400; 
    transition: var(--transition); 
}
.nav a:hover { color: var(--accent); }

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 32px;
    text-decoration: none;
    font-size: 15px;
    font-weight: 600;
    text-align: center;
    transition: var(--transition);
    border: none; 
    cursor: pointer;
    background: transparent;
}
.btn-primary { 
    background-color: var(--accent); 
    color: var(--bg-color); 
}
.btn-primary:hover { 
    background-color: var(--text-main); 
}
.btn-outline { 
    border: 1px solid var(--text-main); 
    color: var(--text-main); 
}
.btn-outline:hover { 
    border-color: var(--accent); 
    color: var(--accent); 
}
.btn-link {
    color: var(--accent);
    padding: 12px 0;
    border-bottom: 1px solid transparent;
}
.btn-link:hover {
    border-bottom: 1px solid var(--accent);
}
.btn-large { 
    padding: 16px 40px; 
    font-size: 16px; 
}

/* Hero Vertical Layout */
.hero { 
    padding: 120px 0 100px; 
}
.hero-container {
    display: flex;
    justify-content: flex-end;
    position: relative;
    min-height: 600px;
}
.hero-text {
    writing-mode: vertical-rl;
    text-align: left;
    height: 650px;
}
.hero-title { 
    font-size: 72px; 
    font-weight: 900;
    line-height: 1.2; 
    color: var(--text-main);
    letter-spacing: 15px;
    margin-left: 60px;
    white-space: nowrap;
}
.hero-subtitle { 
    font-size: 28px; 
    color: var(--accent); 
    letter-spacing: 5px;
    margin-left: 40px;
    white-space: nowrap;
}
.hero-desc {
    font-family: var(--font-en);
    font-style: italic;
    color: var(--text-muted);
    font-size: 18px;
    position: absolute;
    bottom: 80px;
    left: 0;
    max-width: 350px;
    line-height: 1.5;
}
.hero-desc span {
    color: var(--accent);
}
.hero-buttons { 
    display: flex; 
    align-items: center;
    gap: 30px; 
    position: absolute;
    bottom: 0;
    left: 0;
}

/* Sections */
section { padding: 80px 0; }
.section-title { 
    font-size: 24px; 
    color: var(--accent); 
    margin-bottom: 40px; 
    font-weight: 600;
}

/* Hairline Lists */
.list-section {
    border-top: 1px solid var(--hairline);
}
.list-item {
    display: flex;
    padding: 40px 0;
    border-bottom: 1px solid var(--hairline);
}
.item-num {
    font-size: 20px;
    color: var(--accent);
    width: 80px;
    flex-shrink: 0;
}
.item-content h3 {
    font-size: 22px;
    margin-bottom: 15px;
    font-weight: 600;
}
.item-content p {
    color: var(--text-muted);
    font-size: 16px;
    max-width: 600px;
}

/* Pricing Rows */
.pricing-list {
    border-top: 1px solid var(--hairline);
}
.pricing-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 40px 0;
    border-bottom: 1px solid var(--hairline);
    transition: var(--transition);
}
.pricing-row:hover {
    background-color: rgba(221, 212, 195, 0.1); 
}
.featured-row .price-name {
    color: var(--accent);
}
.price-name {
    font-size: 24px;
    font-weight: 900;
    width: 150px;
}
.price-features {
    flex-grow: 1;
    color: var(--text-muted);
    font-size: 15px;
    padding: 0 20px;
}
.price-value {
    font-size: 32px;
    font-weight: 700;
    color: var(--text-main);
    width: 150px;
    text-align: right;
    margin-right: 40px;
}
.price-value small {
    font-size: 14px;
    color: var(--text-muted);
    font-weight: 400;
    font-family: var(--font-cn);
}
.price-action {
    width: 120px;
    text-align: right;
}

/* Reviews */
.review-text {
    font-size: 20px;
    font-style: normal;
    color: var(--text-main) !important;
    margin-bottom: 20px;
    line-height: 1.6;
}
.review-author {
    color: var(--text-muted);
    font-size: 14px;
}

/* Footer */
.footer { 
    padding: 100px 0 60px; 
    margin-top: 80px; 
    position: relative;
    border-top: 1px solid var(--hairline);
    overflow: hidden;
}
.footer-watermark {
    position: absolute;
    bottom: -10%;
    right: -5%;
    font-size: 40vw;
    font-family: var(--font-cn);
    font-weight: 900;
    color: var(--accent);
    opacity: 0.04;
    line-height: 1;
    pointer-events: none;
    writing-mode: vertical-rl;
}
.footer-content {
    position: relative;
    z-index: 2;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.footer-links { 
    display: flex; 
    gap: 40px; 
}
.footer-links a { 
    color: var(--text-muted); 
    text-decoration: none; 
    font-weight: 400; 
    transition: var(--transition); 
}
.footer-links a:hover { 
    color: var(--accent); 
}
.footer-copyright { 
    color: var(--text-muted); 
    font-size: 14px; 
}

/* Content Pages fallback (for about, terms etc) */
.content-page { padding: 100px 0; max-width: 800px; margin: 0 auto; }
.content-page h1 { font-size: 40px; margin-bottom: 30px; border-bottom: 1px solid var(--hairline); padding-bottom: 20px;}
.content-page h2 { margin: 40px 0 20px; font-size: 24px; color: var(--accent); }
.content-page p { margin-bottom: 20px; color: var(--text-muted); }
.content-page a { color: var(--accent); text-decoration: none; }
.content-page a:hover { text-decoration: underline; }
.articles-list { display: flex; flex-direction: column; gap: 0; border-top: 1px solid var(--hairline); }
.article-item { padding: 40px 0; border-bottom: 1px solid var(--hairline); }
.article-item h2 { margin-top: 0; font-size: 24px; margin-bottom: 15px; color: var(--text-main); }
.article-item p { color: var(--text-muted); margin-bottom: 20px; }

/* Mobile Responsive */
@media (max-width: 768px) {
    .nav { display: none; }
    
    .hero {
        padding: 60px 0;
    }
    .hero-container {
        flex-direction: column;
        align-items: center;
        justify-content: flex-start;
        min-height: auto;
    }
    .hero-text {
        height: 400px;
        margin-bottom: 30px;
    }
    .hero-title {
        font-size: 48px;
        margin-left: 30px;
        letter-spacing: 10px;
    }
    .hero-subtitle {
        font-size: 20px;
        margin-left: 20px;
    }
    .hero-desc {
        position: static;
        width: 100%;
        text-align: center;
        margin-bottom: 20px;
        max-width: 100%;
    }
    .hero-buttons {
        position: static;
        width: 100%;
        justify-content: center;
        flex-wrap: wrap;
    }
    
    section { padding: 60px 0; }
    
    .list-item { flex-direction: column; }
    .item-num { margin-bottom: 15px; }
    
    .pricing-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 20px;
    }
    .price-value {
        text-align: left;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 30px;
        text-align: center;
    }
    .footer-watermark {
        font-size: 80vw;
        bottom: 0;
        right: 0;
    }
}