:root {
    --bg-color: #F7F3EA;
    --ink: #1F1F1F;
    --ink-ghost: rgba(38, 36, 31, 0.15);
    --cinnabar: #C8402A;
    --ochre: #B08D57;
    --muted: #6E6A5E;
    --hairline: #E4DCC8;
    
    --font-cn: 'Noto Serif SC', serif;
    --font-en: 'Playfair Display', serif;
}

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

body {
    font-family: var(--font-cn);
    background-color: var(--bg-color);
    color: var(--ink);
    line-height: 1.8;
    position: relative;
    overflow-x: hidden;
}

.paper-grain {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    pointer-events: none;
    z-index: 9999;
    opacity: 0.4;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
}

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.4s ease;
}

header {
    padding: 30px 40px;
    border-bottom: 1px solid var(--hairline);
    background: linear-gradient(to bottom, rgba(247, 243, 234, 1) 50%, rgba(247, 243, 234, 0));
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-area {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo-mark {
    position: relative;
    width: 60px;
    height: 60px;
}

.ink-cloud {
    width: 100%;
    height: 100%;
}
.ink-cloud .ink-ghost {
    fill: var(--ink-ghost);
    transform: translate(2px, 2px);
}
.ink-cloud .ink-dark {
    fill: #26241F;
}

.seal {
    position: absolute;
    bottom: 5px;
    right: 5px;
    width: 22px;
    height: 22px;
    background-color: var(--cinnabar);
    color: #fff;
    font-size: 14px;
    font-weight: bold;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 2px;
    box-shadow: 0 0 0 1px #fff inset, 0 0 0 2px var(--cinnabar) inset;
}

.logo-text {
    display: flex;
    flex-direction: column;
}
.logo-text .cn {
    font-family: var(--font-cn);
    font-weight: 900;
    font-size: 24px;
    line-height: 1.1;
    letter-spacing: 2px;
}
.logo-text .en {
    font-family: var(--font-en);
    font-size: 10px;
    letter-spacing: 0.3em;
    color: var(--muted);
}

nav ul {
    list-style: none;
    display: flex;
    gap: 40px;
}

nav a {
    font-size: 14px;
    letter-spacing: 2px;
    color: var(--ink);
    position: relative;
}

nav a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 1px;
    background-color: var(--cinnabar);
    transition: width 0.4s ease;
}

nav a:hover::after {
    width: 100%;
}

.hairline {
    border: none;
    border-top: 1px solid var(--hairline);
    max-width: 100px;
    margin: 60px auto;
}

main {
    max-width: 1000px;
    margin: 0 auto;
    padding: 60px 20px;
}

.kicker {
    font-family: var(--font-en);
    font-size: 12px;
    letter-spacing: 0.4em;
    color: var(--ochre);
    text-transform: uppercase;
    margin-bottom: 20px;
}

.hero {
    position: relative;
    padding: 100px 0 60px;
    text-align: center;
    background: radial-gradient(circle at center, rgba(31, 31, 31, 0.03) 0%, rgba(247, 243, 234, 0) 70%);
}

.vertical-accent {
    position: absolute;
    right: -40px;
    top: 50px;
    writing-mode: vertical-rl;
    font-size: 14px;
    letter-spacing: 10px;
    color: var(--muted);
    opacity: 0.5;
}

.hero h1 {
    font-size: 64px;
    font-weight: 900;
    letter-spacing: 8px;
    margin-bottom: 10px;
}

.hero h2 {
    font-size: 28px;
    font-weight: 300;
    margin-bottom: 20px;
    color: var(--muted);
}

.hero .subline {
    font-size: 16px;
    font-weight: 400;
    letter-spacing: 2px;
    color: var(--ochre);
    margin-bottom: 40px;
}

.hero .desc {
    max-width: 600px;
    margin: 0 auto 50px;
    font-size: 16px;
    color: var(--muted);
    line-height: 2;
}

.hero-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
}

.btn {
    display: inline-block;
    padding: 12px 35px;
    font-size: 14px;
    letter-spacing: 3px;
    cursor: pointer;
    transition: all 0.4s ease;
    border-radius: 2px;
}

.btn-primary {
    background-color: var(--cinnabar);
    color: #fff;
    border: 1px solid var(--cinnabar);
}

.btn-primary:hover {
    background-color: #a33221;
    border-color: #a33221;
}

.btn-secondary, .btn-outline {
    background-color: transparent;
    color: var(--ink);
    border: 1px solid var(--ink);
}

.btn-secondary:hover, .btn-outline:hover {
    background-color: var(--ink);
    color: #fff;
}

.section-title {
    text-align: center;
    margin-bottom: 60px;
}

.section-title h2 {
    font-size: 32px;
    font-weight: 700;
    letter-spacing: 4px;
    margin-bottom: 10px;
}

.section-title .desc {
    font-size: 14px;
    color: var(--muted);
    letter-spacing: 2px;
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 40px;
}

.two-cols {
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
}

.card {
    position: relative;
    padding: 40px 30px;
    text-align: center;
}

.card-num {
    font-family: var(--font-cn);
    font-size: 40px;
    color: var(--ink-ghost);
    position: absolute;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    z-index: -1;
}

.card h3 {
    font-size: 20px;
    margin-bottom: 20px;
    letter-spacing: 2px;
}

.card p {
    font-size: 14px;
    color: var(--muted);
    line-height: 2;
}

.border-card {
    border: 1px solid var(--hairline);
    background: #Fcfaf5;
}

.price-card {
    border: 1px solid var(--hairline);
    background: #Fcfaf5;
    padding: 50px 30px;
    display: flex;
    flex-direction: column;
}

.price-card.highlight {
    border-color: var(--ochre);
    box-shadow: 0 10px 40px rgba(176, 141, 87, 0.1);
    transform: translateY(-5px);
}

.seal-badge {
    position: absolute;
    top: -15px;
    right: -15px;
    width: 40px;
    height: 40px;
    background: var(--cinnabar);
    color: #fff;
    border-radius: 2px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 18px;
    box-shadow: 0 0 0 2px #fff inset, 0 0 0 4px var(--cinnabar) inset;
    transform: rotate(10deg);
}

.price {
    font-family: var(--font-en);
    font-size: 48px;
    color: var(--ink);
    margin: 20px 0 30px;
}

.price span {
    font-family: var(--font-cn);
    font-size: 16px;
    color: var(--muted);
}

.price-card ul {
    list-style: none;
    margin-bottom: 40px;
    flex-grow: 1;
}

.price-card li {
    font-size: 14px;
    color: var(--muted);
    margin-bottom: 15px;
    position: relative;
    text-align: left;
}

.price-card li::before {
    content: '·';
    color: var(--cinnabar);
    margin-right: 10px;
    font-weight: bold;
}

.faq-list {
    max-width: 700px;
    margin: 0 auto;
}

.faq-item {
    margin-bottom: 40px;
    border-bottom: 1px dashed var(--hairline);
    padding-bottom: 30px;
    text-align: left;
}

.faq-item h3 {
    font-size: 18px;
    margin-bottom: 15px;
    letter-spacing: 1px;
}

.faq-item p {
    font-size: 14px;
    color: var(--muted);
}

.quote-card {
    border-left: 2px solid var(--ochre);
    text-align: left;
    padding: 30px;
    background: linear-gradient(to right, rgba(176, 141, 87, 0.05), transparent);
}

.quote-card p {
    font-style: italic;
    font-family: var(--font-en);
    margin-bottom: 20px;
    color: var(--ink);
}

.quote-card .author {
    font-size: 12px;
    letter-spacing: 2px;
    color: var(--muted);
}

footer {
    text-align: center;
    padding: 60px 20px;
    border-top: 1px solid var(--hairline);
    margin-top: 60px;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin-bottom: 30px;
}

.footer-links a {
    font-size: 12px;
    letter-spacing: 2px;
    color: var(--muted);
}

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

.copyright {
    font-family: var(--font-en);
    font-size: 10px;
    letter-spacing: 0.2em;
    color: var(--hairline);
}

.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 1.2s ease, transform 1.2s ease;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

@media (max-width: 768px) {
    .nav-container {
        flex-direction: column;
        gap: 20px;
    }
    
    nav ul {
        flex-wrap: wrap;
        justify-content: center;
        gap: 20px;
    }
    
    .vertical-accent {
        display: none;
    }
    
    .hero h1 {
        font-size: 40px;
    }
    
    .two-cols {
        grid-template-columns: 1fr;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
}