:root {
    --bg-base: #000000;
    --text-primary: #ffffff;
    --text-secondary: #a1a1aa;
    --border-color: #27272a;
    --accent: #38bdf8;
    --accent-soft: rgba(56, 189, 248, 0.12);
    --font-sans: 'Inter', sans-serif;
    --font-serif: 'Georgia', 'Times New Roman', serif;
    --transition: 0.2s ease-in-out;
    --nav-bg: rgba(0, 0, 0, 0.8);
    --card-bg: rgba(255,255,255,0.02);
    --card-hover: rgba(255,255,255,0.04);
    --card-border-hover: rgba(255,255,255,0.15);
    --grid-line: rgba(255, 255, 255, 0.03);
    --btn-primary-bg: #ffffff;
    --btn-primary-text: #000000;
    --btn-primary-hover: #e4e4e7;
    --input-bg: rgba(0,0,0,0.5);
    --svg-stroke: rgba(255,255,255,0.08);
}

[data-theme="light"] {
    --bg-base: #f8fafc;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --border-color: #e2e8f0;
    --accent: #0ea5e9;
    --accent-soft: rgba(14, 165, 233, 0.10);
    --nav-bg: rgba(255, 255, 255, 0.8);
    --card-bg: #ffffff;
    --card-hover: #f1f5f9;
    --card-border-hover: #cbd5e1;
    --grid-line: rgba(0, 0, 0, 0.04);
    --btn-primary-bg: #0f172a;
    --btn-primary-text: #ffffff;
    --btn-primary-hover: #334155;
    --input-bg: #ffffff;
    --svg-stroke: rgba(0,0,0,0.1);
}

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

body {
    font-family: var(--font-sans);
    background-color: var(--bg-base);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* Grid Background */
.grid-bg {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    z-index: -1;
    background-size: 50px 50px;
    background-image:
        linear-gradient(to right, var(--grid-line) 1px, transparent 1px),
        linear-gradient(to bottom, var(--grid-line) 1px, transparent 1px);
    mask-image: linear-gradient(to bottom, rgba(0,0,0,1) 0%, rgba(0,0,0,0) 100%);
    -webkit-mask-image: linear-gradient(to bottom, rgba(0,0,0,1) 0%, rgba(0,0,0,0) 100%);
    height: 100vh;
}

.container { max-width: 1200px; margin: 0 auto; padding: 0 2rem; }

/* Header */
.header {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    background: var(--nav-bg);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0;
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--text-primary);
    text-decoration: none;
    letter-spacing: -0.02em;
}

.logo span.fw-light { font-weight: 300; }

.nav-links {
    display: flex;
    gap: 2.5rem;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}

.nav-links a {
    font-size: 0.9rem;
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
}

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

.header-actions { display: flex; align-items: center; gap: 1.5rem; }
.nav-login { font-size: 0.9rem; color: var(--text-secondary); text-decoration: none; font-weight: 500; }
.nav-login:hover { color: var(--text-primary); }

/* Buttons */
.btn {
    display: inline-flex; align-items: center; justify-content: center;
    padding: 0.7rem 1.4rem; border-radius: 0.375rem; font-weight: 500; font-size: 0.95rem;
    transition: var(--transition); cursor: pointer; text-decoration: none;
}
.btn-icon { padding: 0.5rem; background: transparent; border: 1px solid var(--border-color); border-radius: 0.375rem; color: var(--text-primary); cursor: pointer; display: flex; align-items: center; justify-content: center; transition: var(--transition); }
.btn-icon:hover { background: var(--card-hover); }

.btn-primary { background: var(--btn-primary-bg); color: var(--btn-primary-text); border: 1px solid var(--btn-primary-bg); }
.btn-primary:hover { background: var(--btn-primary-hover); border-color: var(--btn-primary-hover); }

.btn-outline { background: transparent; border: 1px solid var(--border-color); color: var(--text-primary); }
.btn-outline:hover { border-color: var(--text-secondary); background: var(--card-hover); }

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 70px;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

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

.hero-badge {
    display: inline-flex;
    padding: 0.3rem 0.8rem;
    border-radius: 2rem;
    border: 1px solid var(--border-color);
    background: rgba(255, 255, 255, 0.03);
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.hero-title {
    font-size: 4rem;
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.04em;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.hero-subtitle {
    font-size: 1.15rem;
    font-weight: 400;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 2.5rem;
    max-width: 90%;
}

.hero-cta { display: flex; gap: 1rem; }

/* Abstract Visual */
.hero-visual {
    position: relative;
    width: 100%;
    height: 500px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.abstract-svg {
    width: 100%;
    height: 100%;
    overflow: visible;
}
.abstract-svg line { stroke: var(--svg-stroke); }

/* Animations */
.fade-in-up {
    animation: fadeInUp 0.8s cubic-bezier(0.2, 0.8, 0.2, 1) forwards;
    opacity: 0;
    transform: translateY(20px);
}

@keyframes fadeInUp {
    to { opacity: 1; transform: translateY(0); }
}

/* Features (Bento) & Workflows */
.section { padding: 6rem 0; }
.section-header { margin-bottom: 4rem; max-width: 600px; }
.section-title { font-size: 2.5rem; font-weight: 600; margin-bottom: 1rem; letter-spacing: -0.02em; }
.section-subtitle { font-size: 1.1rem; color: var(--text-secondary); }

.bento-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.bento-card { padding: 2.5rem; background: var(--card-bg); border: 1px solid var(--border-color); border-radius: 1rem; transition: var(--transition); box-shadow: 0 4px 6px -1px rgba(0,0,0,0.02); }
.bento-card:hover { border-color: var(--card-border-hover); background: var(--card-hover); }
.col-span-2 { grid-column: span 2; }
.col-span-1 { grid-column: span 1; }
.bento-icon { margin-bottom: 1.5rem; color: var(--accent); }
.bento-icon svg { width: 32px; height: 32px; stroke-width: 1.5px; }
.bento-card h3 { font-size: 1.25rem; font-weight: 600; margin-bottom: 0.75rem; }
.bento-card p { color: var(--text-secondary); font-size: 0.95rem; }

/* Workflows Grid */
.workflows-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 1.5rem; }
.workflow-card { padding: 2rem; background: var(--card-bg); border: 1px solid var(--border-color); border-radius: 1rem; transition: var(--transition); box-shadow: 0 4px 6px -1px rgba(0,0,0,0.02); }
.workflow-card:hover { background: var(--card-hover); border-color: var(--card-border-hover); }
.workflow-card h4 { font-size: 1.1rem; font-weight: 600; margin-bottom: 0.5rem; }
.workflow-card p { color: var(--text-secondary); font-size: 0.9rem; }
.archive-page { padding-top: 120px; min-height: 70vh; }
.archive-card { color: var(--text-primary); text-decoration: none; }
.archive-card h2 { font-family: var(--font-serif); font-size: 1.25rem; margin-bottom: 0.75rem; }
.generic-page { padding-top: 120px; min-height: 70vh; }
.generic-page-container { max-width: 860px; }
.generic-page-header { margin-bottom: 3rem; padding-bottom: 2rem; border-bottom: 1px solid var(--border-color); }
.generic-page-header h1 { font-family: var(--font-serif); font-size: clamp(2.4rem, 6vw, 4rem); line-height: 1.1; margin-bottom: 1rem; }
.generic-page-header p { color: var(--text-secondary); font-size: 1.1rem; }
.generic-page-content { color: var(--text-secondary); }

/* Stats */
.stats-section { padding: 4rem 0; border-top: 1px solid var(--border-color); }
.stats-container { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 2rem; }
.stat-item h3 { font-size: clamp(1.7rem, 3vw, 2.75rem); font-weight: 700; margin-bottom: 0.5rem; letter-spacing: -0.04em; color: var(--text-primary); }
.stat-item p { color: var(--text-secondary); font-size: 0.9rem; text-transform: uppercase; letter-spacing: 0.05em; font-weight: 500; }

/* Newsletter */
.newsletter-section { padding: 2rem 0 3rem; }
.newsletter-card {
    position: relative;
    overflow: hidden;
    display: grid;
    grid-template-columns: minmax(260px, 0.8fr) minmax(0, 1.3fr);
    align-items: center;
    gap: 4rem;
    padding: 3rem;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    text-align: left;
}
.newsletter-card::after {
    content: "";
    position: absolute;
    width: 280px;
    height: 280px;
    left: -130px;
    bottom: -180px;
    border-radius: 50%;
    background: var(--accent-soft);
    filter: blur(10px);
    pointer-events: none;
}
.newsletter-text, .newsletter-form { position: relative; z-index: 1; }
.newsletter-kicker { display: block; margin-bottom: 0.85rem; color: var(--accent); font-size: 0.72rem; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; }
.newsletter-text h2 { max-width: 480px; font-size: clamp(1.8rem, 3vw, 2.35rem); font-weight: 600; line-height: 1.15; letter-spacing: -0.025em; margin-bottom: 1rem; }
.newsletter-text p { max-width: 430px; margin: 0; color: var(--text-secondary); line-height: 1.7; }
.newsletter-form { display: flex; flex-direction: column; gap: 1rem; width: 100%; padding: 1.25rem; background: var(--bg-base); border: 1px solid var(--border-color); border-radius: 0.875rem; box-shadow: 0 18px 45px rgba(0, 0, 0, 0.08); }
.newsletter-fields { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0.85rem; }
.newsletter-field { display: flex; flex-direction: column; gap: 0.45rem; color: var(--text-primary); font-size: 0.78rem; font-weight: 600; }
.newsletter-input { width: 100%; min-width: 0; min-height: 48px; padding: 0.8rem 0.95rem; background: var(--input-bg); border: 1px solid var(--border-color); border-radius: 0.55rem; color: var(--text-primary); font-family: var(--font-sans); font-size: 0.92rem; transition: border-color 0.2s, box-shadow 0.2s; }
.newsletter-input::placeholder { color: var(--text-secondary); opacity: 0.75; }
.newsletter-input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.newsletter-form-footer { display: flex; align-items: center; gap: 1rem; }
.newsletter-consent { display: flex; align-items: flex-start; gap: 0.6rem; flex: 1; font-size: 0.76rem; color: var(--text-secondary); text-align: left; cursor: pointer; line-height: 1.45; }
.newsletter-consent input { width: 16px; height: 16px; margin-top: 0.1rem; flex-shrink: 0; accent-color: var(--accent); }
.newsletter-consent a { color: var(--accent); text-decoration: underline; }
.newsletter-submit { min-height: 46px; gap: 0.5rem; white-space: nowrap; }
.newsletter-submit svg, .newsletter-reassurance svg { width: 15px; height: 15px; }
.newsletter-reassurance { display: flex; align-items: center; gap: 0.4rem; margin: -0.2rem 0 0; color: var(--text-secondary); font-size: 0.72rem; }
.newsletter-honeypot { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
@media (max-width: 992px) {
    .newsletter-card { grid-template-columns: 1fr; gap: 2rem; }
    .newsletter-text h2, .newsletter-text p { max-width: 620px; }
}
@media (max-width: 640px) {
    .newsletter-card { padding: 1.5rem; }
    .newsletter-fields { grid-template-columns: 1fr; }
    .newsletter-form-footer { align-items: stretch; flex-direction: column; }
    .newsletter-submit { width: 100%; }
}

/* Contact / Cal.com */
.contact-page { padding-top: 110px; padding-bottom: 4rem; min-height: 80vh; }
.contact-page-inner { max-width: 960px; margin: 0 auto; }
.contact-header { margin-bottom: 2rem; text-align: center; }
.contact-title {
    font-family: var(--font-serif);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 1rem;
}
.contact-intro {
    color: var(--text-secondary);
    font-size: 1.1rem;
    line-height: 1.7;
    max-width: 40rem;
    margin: 0 auto;
}
.contact-intro p { margin-bottom: 0.75rem; }
.contact-cal-wrap {
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    background: var(--card-bg);
    overflow: hidden;
    min-height: 700px;
}
.contact-cal-embed {
    width: 100%;
    height: 720px;
    overflow: auto;
}
.contact-alt {
    margin-top: 1.5rem;
    text-align: center;
    font-size: 0.9rem;
    color: var(--text-secondary);
}
.contact-alt a { color: var(--accent); }
.contact-options { min-height: 0; display: grid; grid-template-columns: 1fr 1fr; padding: 2rem; gap: 1px; background: var(--border-color); }
.contact-option { background: var(--bg-base); padding: 2.5rem; }
.contact-option h2 { font-family: var(--font-serif); font-size: 1.6rem; margin-bottom: 0.75rem; }
.contact-option p { color: var(--text-secondary); margin-bottom: 1.5rem; }
.methods-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.method-card { display: flex; flex-direction: column; position: relative; overflow: hidden; }
.method-card h3 { font-size: 1.8rem; margin-bottom: 1rem; }
.method-card > p { font-size: 1.05rem; line-height: 1.7; margin-bottom: 2rem; }
.featured-method { border-color: var(--accent); }
.method-label { position: absolute; top: 0; right: 0; background: var(--accent); color: #001018; padding: 0.3rem 1rem; font-size: 0.72rem; font-weight: 700; border-bottom-left-radius: 1rem; }
.method-list { list-style: none; color: var(--text-secondary); display: flex; flex-direction: column; gap: 0.8rem; margin-top: auto; }
.method-list svg { color: var(--accent); width: 16px; display: inline-block; margin-right: 8px; vertical-align: middle; }
@media (max-width: 768px) {
    .contact-options, .methods-grid { grid-template-columns: 1fr; }
}

/* Cookie consent banner */
.cookie-banner {
    position: fixed;
    bottom: 0; left: 0; right: 0;
    z-index: 300;
    padding: 1rem;
    pointer-events: none;
}
.cookie-banner[hidden] { display: none !important; }
.cookie-banner-inner {
    pointer-events: auto;
    max-width: 720px;
    margin: 0 auto;
    padding: 1rem 1.25rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
    box-shadow: 0 8px 32px rgba(0,0,0,0.25);
    backdrop-filter: blur(12px);
}
.cookie-banner-text {
    margin: 0;
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.45;
}
.cookie-banner-text a { color: var(--accent); }
.cookie-banner-actions { display: flex; gap: 0.5rem; flex-shrink: 0; }
.cookie-btn { font-size: 0.85rem; padding: 0.45rem 0.9rem; }
@media (max-width: 640px) {
    .cookie-banner-inner { flex-direction: column; align-items: stretch; }
    .cookie-banner-actions { width: 100%; }
    .cookie-btn { flex: 1; }
}

/* Sendy result pages */
.sendy-page { padding-top: 120px; min-height: 70vh; display: flex; align-items: center; }
.sendy-page-inner { max-width: 560px; margin: 0 auto; }
.sendy-card { padding: 3rem 2.5rem; background: var(--card-bg); border: 1px solid var(--border-color); border-radius: 1rem; text-align: center; }
.sendy-icon { color: var(--accent); margin-bottom: 1.25rem; }
.sendy-icon svg { width: 40px; height: 40px; stroke-width: 1.5; }
.sendy-card h1 { font-family: var(--font-serif); font-size: 2rem; margin-bottom: 1rem; line-height: 1.2; }
.sendy-body { color: var(--text-secondary); font-size: 1.05rem; line-height: 1.7; margin-bottom: 2rem; text-align: left; }
.sendy-body p { margin-bottom: 1rem; }
.sendy-body a { color: var(--accent); }
.sendy-actions { display: flex; flex-wrap: wrap; gap: 0.75rem; justify-content: center; }

/* Footer */
.footer { padding: 4rem 0 2rem; border-top: 1px solid var(--border-color); background: var(--bg-base); }
.footer-inner { display: grid; grid-template-columns: 1fr 2fr; gap: 4rem; margin-bottom: 4rem; }
.footer-brand p { color: var(--text-secondary); margin-top: 1rem; font-size: 0.9rem; max-width: 250px; }
.footer-links { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; }
.footer-col h4 { font-size: 0.85rem; font-weight: 600; color: var(--text-primary); margin-bottom: 1.5rem; }
.footer-col a { display: block; color: var(--text-secondary); text-decoration: none; font-size: 0.9rem; margin-bottom: 0.75rem; transition: var(--transition); }
.footer-col a:hover { color: var(--text-primary); }
.footer-bottom { border-top: 1px solid var(--border-color); padding-top: 2rem; text-align: center; color: var(--text-secondary); font-size: 0.85rem; }

/* Blogs */
.blog-card { padding: 2rem; border: 1px solid var(--border-color); background: var(--card-bg); border-radius: 1rem; transition: var(--transition); display: flex; flex-direction: column; }
.blog-card:hover { border-color: var(--card-border-hover); background: var(--card-hover); }
.blog-meta { display: flex; gap: 1rem; align-items: center; margin-bottom: 1rem; font-size: 0.85rem; color: var(--text-secondary); }
.tag { padding: 0.2rem 0.6rem; border: 1px solid var(--border-color); border-radius: 1rem; font-size: 0.75rem; text-transform: uppercase; color: var(--text-primary); text-decoration: none; }
.blog-title { font-size: 1.25rem; font-weight: 600; margin-bottom: 1rem; }
.blog-title a { color: var(--text-primary); }
.blog-summary { color: var(--text-secondary); font-size: 0.95rem; margin-bottom: 1.5rem; flex-grow: 1; }
.read-more { color: var(--text-primary); font-size: 0.9rem; font-weight: 500; }

.theme-toggle-btn { background: var(--card-bg); border: 1px solid var(--border-color); border-radius: 50%; width: 38px; height: 38px; display: flex; align-items: center; justify-content: center; color: var(--text-primary); cursor: pointer; transition: var(--transition); }
.theme-toggle-btn:hover { background: var(--card-hover); border-color: var(--card-border-hover); }

/* ===== Blog Single (article) ===== */

/* Reading progress bar */
.reading-progress { position: fixed; top: 0; left: 0; right: 0; height: 3px; z-index: 200; background: transparent; }
.reading-progress-bar { height: 100%; width: 0; background: var(--accent); transition: width 0.1s linear; }

/* Sticky title bar */
.blog-stickybar { position: fixed; top: 70px; left: 0; right: 0; z-index: 90; background: var(--nav-bg); backdrop-filter: blur(12px); border-bottom: 1px solid var(--border-color); transform: translateY(-100%); opacity: 0; transition: transform 0.25s ease, opacity 0.25s ease; pointer-events: none; }
.blog-stickybar.visible { transform: translateY(0); opacity: 1; pointer-events: auto; }
.blog-stickybar-inner { max-width: 1200px; margin: 0 auto; padding: 0.75rem 2rem; display: flex; align-items: center; justify-content: space-between; gap: 1.5rem; }
.blog-stickybar-title { display: flex; align-items: center; gap: 0.6rem; font-weight: 600; font-size: 0.95rem; color: var(--text-primary); overflow: hidden; white-space: nowrap; text-overflow: ellipsis; }

/* Layout */
.blog-single { padding-top: 110px; padding-bottom: 6rem; min-height: 100vh; }
.blog-single-container { max-width: 1200px; margin: 0 auto; padding: 0 2rem; }

/* Breadcrumb */
.blog-breadcrumb { display: flex; flex-wrap: wrap; align-items: center; gap: 0.5rem; font-size: 0.85rem; color: var(--text-secondary); margin-bottom: 2rem; }
.blog-breadcrumb a { color: var(--text-secondary); text-decoration: none; transition: var(--transition); }
.blog-breadcrumb a:hover { color: var(--text-primary); }
.blog-breadcrumb .sep { color: var(--border-color); }
.blog-breadcrumb .current { color: var(--text-primary); }

/* Header */
.blog-post-header-top { display: flex; align-items: center; justify-content: space-between; gap: 1rem; margin-bottom: 1.5rem; }
.blog-post-cats { display: flex; align-items: center; gap: 1rem; flex-wrap: wrap; }
.cat-badge { display: inline-flex; align-items: center; gap: 0.5rem; padding: 0.35rem 0.9rem; border: 1px solid var(--border-color); border-radius: 2rem; font-size: 0.85rem; font-weight: 600; color: var(--accent); }
.cat-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); display: inline-block; flex-shrink: 0; }
.cat-sub { font-size: 0.85rem; color: var(--text-secondary); }

.blog-actions { display: flex; align-items: center; gap: 0.6rem; }
.blog-action-btn { display: inline-flex; align-items: center; gap: 0.45rem; padding: 0.45rem 0.9rem; background: var(--card-bg); border: 1px solid var(--border-color); border-radius: 0.5rem; color: var(--text-primary); font-family: var(--font-sans); font-size: 0.85rem; font-weight: 500; cursor: pointer; transition: var(--transition); }
.blog-action-btn:hover { background: var(--card-hover); border-color: var(--card-border-hover); }
.blog-action-btn svg { width: 15px; height: 15px; }

.blog-post-title { font-family: var(--font-serif); font-size: clamp(2.2rem, 5vw, 3.75rem); font-weight: 700; line-height: 1.1; letter-spacing: -0.02em; margin-bottom: 1.25rem; }
.blog-post-summary { font-size: 1.25rem; color: var(--text-secondary); line-height: 1.5; margin-bottom: 1.5rem; max-width: 720px; }
.blog-post-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 0.75rem; font-size: 0.9rem; color: var(--text-secondary); }
.blog-post-meta .meta-item { display: inline-flex; align-items: center; gap: 0.4rem; }
.blog-post-meta .meta-item svg { width: 15px; height: 15px; }
.blog-post-meta .meta-tag { padding: 0.3rem 0.75rem; background: var(--card-bg); border: 1px solid var(--border-color); border-radius: 0.5rem; font-size: 0.8rem; }

/* Hero image on single post */
.blog-hero-image { margin: 2rem 0 0; width: 100%; }
.blog-hero-image-inner {
    width: 100%;
    padding-top: 48%; /* ~2:1, matches magazine hero feel */
    border-radius: 0.75rem;
    background-color: var(--border-color);
    background-size: cover;
    background-position: center;
    border: 1px solid var(--border-color);
}
.blog-hero-credit {
    margin-top: 0.6rem;
    font-size: 0.75rem;
    color: var(--text-secondary);
    font-family: var(--font-sans);
    letter-spacing: 0.02em;
}
.blog-hero-credit a { color: var(--text-secondary); text-decoration: underline; text-underline-offset: 2px; }
.blog-hero-credit a:hover { color: var(--accent); }

.blog-divider { border: none; border-top: 1px solid var(--border-color); margin: 2.5rem 0 2.5rem; }

/* Body two-column */
.blog-body { display: grid; grid-template-columns: minmax(0, 1fr) 280px; gap: 4rem; align-items: start; }

/* Content typography */
.blog-content { font-size: 1.1rem; color: var(--text-secondary); line-height: 1.8; }
.blog-content > :first-child { margin-top: 0; }
.blog-content > h2:first-child { padding-top: 0; }
.blog-content > h2:first-child::before { margin-top: 0; }
.blog-content h2, .blog-content h3, .blog-content h4 { color: var(--text-primary); scroll-margin-top: 110px; }
.blog-content h2 { font-family: var(--font-serif); font-weight: 700; font-size: clamp(1.6rem, 3vw, 1.9rem); line-height: 1.2; margin: 3.2em 0 0.7em; padding-top: 0.3em; letter-spacing: -0.01em; }
.blog-content h2::before { content: ""; display: block; width: 42px; height: 4px; border-radius: 4px; background: var(--accent); margin-bottom: 16px; }
.blog-content h3 { font-family: var(--font-serif); font-weight: 600; font-size: 1.35rem; margin: 2em 0 0.6em; letter-spacing: -0.01em; }
.blog-content h4 { font-weight: 600; font-size: 1.1rem; margin: 1.5em 0 0.4em; }
.blog-content p, .blog-content ul, .blog-content ol { margin-bottom: 1.5rem; }
.blog-content ul, .blog-content ol { padding-left: 1.5rem; }
.blog-content li { margin-bottom: 0.5rem; }
.blog-content li::marker { color: var(--accent); }
.blog-content strong { color: var(--text-primary); font-weight: 600; }
.blog-content a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; text-decoration-color: color-mix(in srgb, var(--accent) 35%, transparent); }
.blog-content a:hover { text-decoration-color: var(--accent); }
.blog-content hr { border: 0; height: 1px; background: var(--border-color); margin: 2.6em 0; }

/* prose: tables */
.blog-content table { width: 100%; border-collapse: collapse; margin: 1.4em 0; font-size: 0.96rem; border: 1px solid var(--border-color); border-radius: 0.75rem; overflow: hidden; }
.blog-content thead th { background: var(--accent-soft); color: var(--text-primary); font-weight: 700; text-align: left; }
.blog-content th, .blog-content td { padding: 11px 14px; border-bottom: 1px solid var(--border-color); }
.blog-content tbody tr:last-child td { border-bottom: 0; }
.blog-content tbody tr:nth-child(even) { background: var(--card-bg); }

/* prose: code */
.blog-content code { font-family: monospace; font-size: 0.88em; background: var(--card-bg); padding: 0.15em 0.42em; border-radius: 6px; border: 1px solid var(--border-color); }
.blog-content pre { background: var(--card-bg); border: 1px solid var(--border-color); border-radius: 0.75rem; padding: 16px 18px; overflow: auto; margin: 1.4em 0; line-height: 1.5; }
.blog-content pre code { background: none; border: 0; padding: 0; font-size: 0.86rem; }

/* prose: blockquote */
.blog-content blockquote { margin: 1.4em 0; padding: 0.5em 1.2em; border-left: 4px solid var(--accent); background: var(--accent-soft); border-radius: 0 0.75rem 0.75rem 0; color: var(--text-secondary); }
.blog-content blockquote p:last-child { margin-bottom: 0; }

/* Math (KaTeX) */
.blog-content .katex { font-size: 1.08em; color: var(--text-primary); }
.blog-content .katex-display { margin: 1.5em 0; overflow-x: auto; overflow-y: hidden; padding: 0.25rem 0; }
.blog-content .katex-display > .katex { font-size: 1.15em; }

/* Mermaid diagrams */
.blog-content .mermaid-wrap {
    margin: 1.75em 0;
    padding: 1.25rem 1rem;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
    overflow-x: auto;
}
.blog-content .mermaid {
    display: flex;
    justify-content: center;
    margin: 0;
    background: transparent;
    font-family: var(--font-sans);
}
.blog-content .mermaid svg { max-width: 100%; height: auto; }

/* prose: details/summary */
.blog-content details { margin: 1em 0; border: 1px solid var(--border-color); border-radius: 0.75rem; background: var(--card-bg); overflow: hidden; }
.blog-content summary { cursor: pointer; list-style: none; padding: 13px 16px; font-weight: 600; color: var(--accent); display: flex; align-items: center; gap: 10px; }
.blog-content summary::-webkit-details-marker { display: none; }
.blog-content summary::before { content: "+"; display: grid; place-items: center; width: 22px; height: 22px; border-radius: 7px; background: var(--accent-soft); color: var(--accent); font-weight: 700; font-size: 16px; }
.blog-content details[open] summary::before { content: "\2212"; }
.blog-content details[open] > summary { border-bottom: 1px solid var(--border-color); margin-bottom: 8px; }
.blog-content details > :not(summary) { padding: 0 18px; }
.blog-content details > :not(summary):last-child { padding-bottom: 16px; }

/* Subtle signup CTA on blog posts */
.blog-signup-cta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.25rem;
    margin: 3rem 0 0;
    padding: 1.25rem 1.5rem;
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
    background: var(--card-bg);
}
.blog-signup-cta-kicker {
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--text-secondary);
    margin: 0 0 0.35rem;
    font-family: var(--font-sans);
}
.blog-signup-cta-copy {
    margin: 0;
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.5;
    max-width: 36rem;
}
.blog-signup-cta-btn {
    flex-shrink: 0;
    white-space: nowrap;
    font-size: 0.9rem;
    padding: 0.55rem 1.1rem;
}
@media (max-width: 640px) {
    .blog-signup-cta { flex-direction: column; align-items: flex-start; }
    .blog-signup-cta-btn { width: 100%; text-align: center; }
}

/* Prev/next pager */
.blog-pager { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin: 3.5em 0 0; }
.blog-pager-link { display: flex; flex-direction: column; gap: 5px; padding: 16px 18px; border: 1px solid var(--border-color); border-radius: 0.75rem; background: var(--card-bg); text-decoration: none; transition: var(--transition); }
.blog-pager-link:hover { border-color: var(--accent); transform: translateY(-2px); background: var(--card-hover); }
.blog-pager-link.next { text-align: right; }
.blog-pager .pager-dir { font-size: 0.8rem; font-weight: 600; color: var(--accent); }
.blog-pager .pager-title { font-weight: 600; color: var(--text-primary); }

/* Related posts */
.blog-related { margin-top: 4rem; padding-top: 2.5rem; border-top: 1px solid var(--border-color); }
.blog-related-head { font-family: var(--font-serif); font-weight: 700; font-size: 1.6rem; letter-spacing: -0.02em; margin-bottom: 1.5rem; }
.blog-related-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 16px; }
.blog-related-card { position: relative; display: flex; flex-direction: column; gap: 8px; padding: 20px; border: 1px solid var(--border-color); border-radius: 0.75rem; background: var(--card-bg); text-decoration: none; overflow: hidden; transition: var(--transition); }
.blog-related-card::after { content: ""; position: absolute; inset: 0 auto 0 0; width: 4px; background: var(--accent); transform: scaleY(0); transform-origin: top; transition: transform 0.25s ease; }
.blog-related-card:hover { transform: translateY(-4px); background: var(--card-hover); border-color: var(--card-border-hover); }
.blog-related-card:hover::after { transform: scaleY(1); }
.blog-related-card .rc-kicker { font-size: 0.72rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.1em; color: var(--accent); }
.blog-related-card .rc-title { font-family: var(--font-serif); font-weight: 600; font-size: 1.1rem; color: var(--text-primary); letter-spacing: -0.01em; }
.blog-related-card .rc-desc { font-size: 0.85rem; color: var(--text-secondary); line-height: 1.5; }
.blog-related-card .rc-go { margin-top: 4px; color: var(--accent); font-weight: 700; transition: transform 0.2s ease; }
.blog-related-card:hover .rc-go { transform: translateX(4px); }

/* TOC sidebar */
.blog-toc { position: sticky; top: 110px; align-self: start; }
.blog-toc-sticky { }
.blog-toc-label { text-transform: uppercase; letter-spacing: 0.08em; font-size: 0.75rem; font-weight: 600; color: var(--text-secondary); margin-bottom: 1.25rem; padding-left: 1rem; }
.blog-toc-nav { display: flex; flex-direction: column; border-left: 1px solid var(--border-color); max-height: calc(100vh - 160px); overflow-y: auto; }
.blog-toc-nav .toc-link { display: block; padding: 0.4rem 0 0.4rem 1rem; margin-left: -1px; border-left: 2px solid transparent; font-size: 0.9rem; color: var(--text-secondary); text-decoration: none; line-height: 1.4; transition: color 0.15s ease, border-color 0.15s ease; }
.blog-toc-nav .toc-link:hover { color: var(--text-primary); }
.blog-toc-nav .toc-link.toc-h3 { padding-left: 2rem; font-size: 0.85rem; }
.blog-toc-nav .toc-link.active { color: var(--accent); border-left-color: var(--accent); font-weight: 600; }

@media (max-width: 900px) {
    .blog-body { grid-template-columns: 1fr; }
    .blog-toc { display: none; }
    .blog-pager { grid-template-columns: 1fr; }
}

@media print {
    .reading-progress, .blog-stickybar, .blog-actions, .blog-toc, .blog-pager, .blog-related, .header, .newsletter-section, .footer { display: none !important; }
    .blog-body { grid-template-columns: 1fr; }
    .blog-single { padding-top: 0; }
}

/* Magazine Blogs Layout */
.magazine-hero { padding: 80px 0 40px; background: var(--bg-base); }
.magazine-grid { display: grid; grid-template-columns: 1.6fr 1fr; gap: 2.5rem; max-width: 1200px; margin: 0 auto; align-items: stretch; }
.serif-title { font-family: var(--font-serif); font-weight: 700; color: var(--text-primary); line-height: 1.25; letter-spacing: -0.01em; }
.serif-title a { color: inherit; text-decoration: none; transition: var(--transition); }
.serif-title a:hover { opacity: 0.8; text-decoration: underline; }

.top-story { position: relative; display: flex; flex-direction: column; height: 100%; }
.top-story-img { width: 100%; min-height: 300px; background-size: cover; background-position: center; border-radius: 4px; }
.top-story-card { position: relative; margin-top: -80px; margin-left: 0; margin-right: 2rem; background: var(--bg-base); padding: 1.5rem; border-top: 4px solid var(--bg-base); box-shadow: 0 -5px 20px rgba(0,0,0,0.05); }

@media (min-width: 993px) {
    .top-story { display: block; }
    .top-story-img { position: absolute; top: 0; left: 0; width: 100%; height: calc(100% - 130px); min-height: 0; z-index: 1; }
    .top-story-card { position: absolute; bottom: 0; left: 0; right: 2rem; margin-top: 0; z-index: 2; }
}
.badge.red { background: #e11d48; color: white; padding: 0.25rem 0.6rem; font-size: 0.75rem; font-weight: 700; font-family: var(--font-sans); text-transform: uppercase; display: inline-block; margin-bottom: 1rem; border-radius: 2px; }
.top-story .serif-title { font-size: 2.2rem; margin-bottom: 1rem; }
.magazine-summary { color: var(--text-primary); font-size: 1.05rem; line-height: 1.5; margin-bottom: 1rem; font-family: var(--font-serif); }
.magazine-meta { font-size: 0.85rem; color: var(--text-secondary); text-transform: uppercase; font-weight: 500; letter-spacing: 0.05em; font-family: var(--font-sans); }
.magazine-meta .author { color: var(--text-primary); font-weight: 600; }
.magazine-meta .date { margin-left: 0.2rem; color: var(--text-secondary); }

.right-column { display: flex; flex-direction: column; height: 100%; }
.secondary-story { border-bottom: 1px solid var(--border-color); padding-bottom: 1.2rem; margin-bottom: 1.2rem; }
.secondary-img { width: 100%; height: 160px; background-size: cover; background-position: center; border-radius: 4px; margin-bottom: 1rem; }
.meta-tags { font-size: 0.8rem; font-weight: 700; margin-bottom: 0.8rem; font-family: var(--font-sans); }
.meta-tags .red { color: #e11d48; }
.meta-tags .grey { color: var(--text-secondary); font-style: italic; }
.secondary-story .serif-title { font-size: 1.5rem; margin-bottom: 0.6rem; }

.list-stories { display: flex; flex-direction: column; gap: 1.2rem; }
.list-item { display: flex; gap: 1rem; align-items: flex-start; padding-bottom: 1.2rem; border-bottom: 1px solid var(--border-color); }
.list-item:last-child { border-bottom: none; padding-bottom: 0; }
.list-content { flex: 1; }
.list-item .serif-title { font-size: 1.25rem; margin-bottom: 0.6rem; }
.list-img { width: 100px; height: 75px; flex-shrink: 0; background-size: cover; background-position: center; border-radius: 4px; }
@media (max-width: 992px) {
    .magazine-grid { grid-template-columns: 1fr; gap: 2rem; }
    .top-story-card { margin-right: 0; margin-left: 0; }
    .hero-grid { grid-template-columns: 1fr; }
    .hero-content { text-align: center; margin: 0 auto; }
    .hero-title { font-size: 3.5rem; }
    .bento-grid { grid-template-columns: 1fr; }
    .col-span-2 { grid-column: span 1; }
    .footer-inner { grid-template-columns: 1fr; gap: 2rem; }
}

/* Category Blocks & Page 2 Layout */
.cat-header { display: flex; align-items: flex-end; gap: 1rem; margin-bottom: 2rem; }
.cat-header h2.serif-title { font-size: 2.5rem; line-height: 1; margin: 0; }
.cat-line { flex-grow: 1; border-bottom: 3px solid var(--text-primary); margin-bottom: 0.2rem; }
.see-all-btn { background-color: var(--text-primary); color: var(--bg-base); padding: 0.5rem 1rem; font-size: 0.85rem; font-weight: 700; text-decoration: none; text-transform: uppercase; font-family: var(--font-sans); margin-bottom: 0.2rem; display: inline-block; transition: background-color 0.2s, color 0.2s; }
.see-all-btn:hover { opacity: 0.8; }

.cat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 2rem; }
.cat-post-big { grid-column: span 2; grid-row: span 2; display: flex; flex-direction: column; }
.cat-img-big { width: 100%; aspect-ratio: 1.6; background-size: cover; background-position: center; border-radius: 4px; margin-bottom: 1.5rem; }
.cat-post-big .serif-title { font-size: 2rem; margin-bottom: 1rem; }

.cat-post-small { display: flex; flex-direction: column; }
.cat-img-small { width: 100%; aspect-ratio: 1.6; background-size: cover; background-position: center; border-radius: 4px; margin-bottom: 1rem; }
.cat-post-small .serif-title { font-size: 1.15rem; margin-bottom: 0.6rem; }

/* Plain List */
.plain-list { display: flex; flex-direction: column; gap: 2rem; }
.plain-list-item { display: grid; grid-template-columns: 280px 1fr; gap: 2rem; align-items: start; border-bottom: 1px solid var(--border-color); padding-bottom: 2rem; }
.plain-list-item:last-child { border-bottom: none; }
.plain-list-img { width: 100%; aspect-ratio: 16/9; background-size: cover; background-position: center; border-radius: 4px; }
.plain-list-content .serif-title { font-size: 1.6rem; margin-bottom: 0.8rem; margin-top: 0; }

.view-more-container { text-align: center; margin: 4rem 0; }
.view-more-btn { display: inline-block; background: var(--text-primary); color: var(--bg-base); padding: 1rem 3rem; font-family: var(--font-sans); font-weight: 700; text-transform: uppercase; text-decoration: none; letter-spacing: 0.05em; transition: opacity 0.2s; }
.view-more-btn:hover { opacity: 0.8; }

/* Cards Grid */
.cards-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 4rem 2rem; align-items: start; }
.grid-blog-card {
    display: flex;
    flex-direction: column;
    background: transparent;
    border: none;
    border-radius: 0;
    overflow: visible;
}
.grid-blog-card-img-link {
    display: block;
    width: 100%;
    border-radius: 8px;
    overflow: hidden;
    margin-bottom: 1.2rem;
    background-color: var(--border-color);
    position: relative;
}
.grid-blog-card-img {
    width: 100%;
    padding-top: 66.66%; /* Bulletproof 3:2 aspect ratio */
    background-size: cover;
    background-position: center;
    transition: transform 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
}
.grid-blog-card-img-link:hover .grid-blog-card-img {
    transform: scale(1.05);
}
.grid-blog-card-content {
    padding: 0;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}
.grid-blog-card-title {
    font-size: 1.3rem;
    font-family: var(--font-serif);
    font-weight: 700;
    margin: 0 0 0.8rem 0;
    line-height: 1.35;
}
.grid-blog-card-title a { color: var(--text-primary); text-decoration: none; transition: color 0.2s; }
.grid-blog-card-title a:hover { color: var(--accent); }
.grid-blog-card-meta {
    font-family: var(--font-sans);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    color: var(--text-primary);
    text-transform: uppercase;
}
.grid-blog-card-meta span.by {
    color: var(--text-secondary);
    margin-right: 0.2rem;
}

@media (max-width: 992px) {
    .cat-grid { grid-template-columns: repeat(2, 1fr); }
    .cat-post-big { grid-column: span 2; }
    .plain-list-item { grid-template-columns: 1fr; }
    .plain-list-img { aspect-ratio: 2; }
    .cards-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
    .cat-grid { grid-template-columns: 1fr; }
    .cat-post-big { grid-column: span 1; grid-row: span 1; }
    .cards-grid { grid-template-columns: 1fr; }
}

/* Original GeneFlow DNA hero inside the shared site shell. */
.hero > .hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    text-align: left;
}
.hero-bg-grid {
    position: absolute;
    inset: 0;
    z-index: -1;
    background-image: linear-gradient(var(--border-color) 1px, transparent 1px), linear-gradient(90deg, var(--border-color) 1px, transparent 1px);
    background-size: 50px 50px;
    mask-image: radial-gradient(circle at center, black, transparent 80%);
    -webkit-mask-image: radial-gradient(circle at center, black, transparent 80%);
    opacity: 0.3;
}
.hero-text { max-width: 600px; }
.pill {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 999px;
    border: 1px solid var(--border-color);
    background: var(--card-bg);
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}
.text-glow {
    background: linear-gradient(180deg, var(--text-primary), var(--text-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    filter: drop-shadow(0 0 2rem var(--accent-soft));
}
.hero-actions { display: flex; gap: 1rem; margin-bottom: 2rem; }
.hero-image-wrapper {
    position: relative;
    border-radius: 20px;
    background: radial-gradient(circle at center, var(--accent-soft), transparent 70%);
    display: flex;
    justify-content: center;
    align-items: center;
}
.hero-svg { width: 100%; max-width: 500px; height: auto; display: block; }
.newsletter-cta { display: flex; flex-wrap: wrap; gap: 0.75rem; justify-content: flex-end; }

@media (max-width: 992px) {
    .hero > .hero-content { grid-template-columns: 1fr; }
    .hero-text { text-align: center; margin: 0 auto; }
    .hero-actions { justify-content: center; }
    .hero-visual { height: 420px; }
}

@media (max-width: 768px) {
    .header-inner { padding: 0 1rem; }
    .nav-links { display: none; }
    .header-actions { gap: 0.65rem; }
    .nav-login { display: none; }
    .header-signup { padding: 0.55rem 0.85rem; }
    .hero { min-height: auto; padding: 9rem 0 4rem; }
    .hero > .hero-content { gap: 2rem; }
    .hero-title { font-size: clamp(2.5rem, 12vw, 3.5rem); }
    .hero-subtitle { max-width: 100%; }
    .hero-actions { flex-direction: column; }
    .hero-actions .btn { width: 100%; }
    .hero-visual { height: auto; }
    .newsletter-cta { justify-content: flex-start; }
    .footer-links { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 520px) {
    .container { padding: 0 1.25rem; }
    .footer-links { grid-template-columns: 1fr; }
    .stat-item { width: calc(50% - 1rem); }
}