:root {
    --ink-black: #1a1a1a;
    --ink-gray: #4a4a4a;
    --ink-light: #f4f4f0;
    --paper: #fcfcf8;
    --accent: #5e1313;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
    font-family: "STZhongsong", "SimSun", serif;
    background-color: var(--paper);
    color: var(--ink-black);
    line-height: 1.6;
    overflow-x: hidden;
}
.sticky-nav {
    position: sticky;
    top: 0;
    z-index: 1000;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 50px;
    background: rgba(252, 252, 248, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0,0,0,0.1);
}
.sticky-nav nav a {
    margin: 0 15px;
    text-decoration: none;
    color: var(--ink-black);
    font-weight: bold;
    position: relative;
}
.btn {
    text-decoration: none;
    padding: 10px 20px;
    border-radius: 4px;
    display: inline-block;
    transition: all 0.3s ease;
    font-weight: bold;
}
.primary-btn {
    background: var(--ink-black);
    color: var(--paper) !important;
    border: 1px solid var(--ink-black);
}
.primary-btn:hover { background: var(--accent); border-color: var(--accent); }
.outline-btn {
    background: transparent;
    color: var(--ink-black);
    border: 1px solid var(--ink-black);
}
.outline-btn:hover { background: var(--ink-light); }
.text-btn { color: var(--accent); text-decoration: underline; padding: 10px; }

/* Scroll Snapping Container */
.scroll-container {
    height: 100vh;
    overflow-y: scroll;
    scroll-snap-type: y mandatory;
}
.scroll-section {
    height: 100vh;
    scroll-snap-align: start;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 20px;
    text-align: center;
}

/* Typography & Theming */
.ink-title {
    font-size: 3rem;
    margin-bottom: 20px;
    position: relative;
    display: inline-block;
}
.ink-title::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0; width: 100%; height: 8px;
    background: url('data:image/svg+xml;utf8,<svg viewBox="0 0 100 10" xmlns="http://www.w3.org/2000/svg"><path d="M0,5 Q50,0 100,5" stroke="rgba(0,0,0,0.2)" stroke-width="2" fill="none"/></svg>');
}
.ink-bg-1 { background: radial-gradient(circle at top left, var(--ink-light), var(--paper)); }
.ink-bg-2 { background: radial-gradient(circle at bottom right, #eaeaea, var(--paper)); }

/* Grid Layouts */
.card-grid {
    display: flex;
    gap: 30px;
    max-width: 1000px;
    margin-top: 40px;
}
.card {
    background: #fff;
    padding: 30px;
    border: 1px solid rgba(0,0,0,0.05);
    box-shadow: 2px 5px 15px rgba(0,0,0,0.03);
    flex: 1;
    position: relative;
    transition: transform 0.3s;
}
.card:hover { transform: translateY(-5px); }
.card h3 { margin: 15px 0; }
.ink-icon { width: 40px; height: 40px; }

/* Pricing */
.pricing-table { display: flex; gap: 20px; max-width: 900px; margin-top: 30px; }
.price-col {
    padding: 40px;
    background: #fff;
    border: 1px solid #ddd;
    flex: 1;
}
.price-col.featured { border: 2px solid var(--ink-black); transform: scale(1.05); }
.price-col ul { list-style: none; margin: 20px 0; padding: 0; }
.price-col ul li { margin-bottom: 10px; }
.price { font-size: 2.5rem; margin: 20px 0; font-weight: bold; }

/* FAQ */
.faq-list { max-width: 800px; text-align: left; margin-top: 30px; width: 100%; }
.faq-item { margin-bottom: 20px; border-bottom: 1px dashed #ccc; padding-bottom: 10px; }
.faq-item h4 { font-size: 1.2rem; margin-bottom: 5px; }

/* Footer */
.footer {
    height: 30vh;
    background: var(--ink-black);
    color: var(--paper);
}
.footer-nav a {
    color: var(--paper);
    margin: 0 15px;
    text-decoration: none;
}
.copyright { margin-top: 20px; font-size: 0.9rem; opacity: 0.7; }

.logo svg { width: 150px; height: auto; display: block; }


.seo-article a,
.seo-article a:visited {
    color: #8b0000;
}

/* Blog specific */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    max-width: 1200px;
    margin-top: 40px;
    width: 100%;
}
.blog-card {
    border: 1px solid var(--ink-black); /* outline borders */
    background: url('data:image/svg+xml;utf8,<svg viewBox="0 0 100 100" xmlns="http://www.w3.org/2000/svg"><filter id="noise"><feTurbulence type="fractalNoise" baseFrequency="0.01" numOctaves="3" stitchTiles="stitch"/></filter><rect width="100%" height="100%" filter="url(%23noise)" opacity="0.05"/></svg>'), #fff; /* watercolor texture */
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    text-align: left;
}
.blog-card p {
    flex-grow: 1;
    margin-bottom: 20px;
}

/* SEO Article */
.article-container {
    padding: 100px 20px 50px;
    max-width: 900px;
    margin: 0 auto;
    min-height: calc(100vh - 30vh);
}
.seo-article {
    background: url('data:image/svg+xml;utf8,<svg viewBox="0 0 100 100" xmlns="http://www.w3.org/2000/svg"><filter id="noise"><feTurbulence type="fractalNoise" baseFrequency="0.01" numOctaves="3" stitchTiles="stitch"/></filter><rect width="100%" height="100%" filter="url(%23noise)" opacity="0.05"/></svg>'), #fff;
    padding: 50px;
    border: 1px solid var(--ink-black);
    box-shadow: 2px 5px 15px rgba(0,0,0,0.03);
    font-size: 1.1rem;
    line-height: 2;
    color: var(--ink-black);
}
.seo-article h1, .seo-article h2, .seo-article h3 {
    margin-top: 1.8em;
    margin-bottom: 0.8em;
    font-family: "STZhongsong", "SimSun", serif;
}
.seo-article h1 {
    font-size: 2.2rem;
    text-align: center;
    position: relative;
    padding-bottom: 20px;
    margin-bottom: 40px;
    margin-top: 0;
}
.seo-article h1::after {
    content: '';
    position: absolute;
    bottom: 0; left: 20%; width: 60%; height: 6px;
    background: url('data:image/svg+xml;utf8,<svg viewBox="0 0 100 10" xmlns="http://www.w3.org/2000/svg"><path d="M0,5 Q50,0 100,5" stroke="rgba(0,0,0,0.2)" stroke-width="2" fill="none"/></svg>');
}
.seo-article p {
    margin-bottom: 1.2em;
    text-align: justify;
}

/* Global Link Override to prevent default browser blue/purple */
a { color: #8b0000; text-decoration: none; }

a:hover { filter: brightness(1.2); }


/* Universal Mobile Nav Fix */
@media (max-width: 991px) {
    header, .top-header, .sticky-nav {
        flex-direction: column !important;
        height: auto !important;
        padding: 15px 10px !important;
    }
    .main-nav, nav, .nav-links, .nav-links ul, nav ul {
        display: flex !important;
        flex-wrap: wrap !important;
        justify-content: center !important;
        gap: 12px !important;
        width: 100% !important;
        margin: 10px 0 !important;
        padding: 0 !important;
    }
    .main-nav a, nav a, .nav-links a {
        font-size: 0.95rem !important;
        padding: 5px !important;
        margin: 0 !important;
    }
    .cta-btn, .nav-cta, .btn, .primary-btn, .primary-cta {
        margin-top: 5px !important;
        width: auto !important;
    }
}