.isf-guide-container {
    --isf-cream: #faf8f4;
    --isf-ink: #1a1714;
    --isf-ink-soft: #3d3830;
    --isf-muted: #8c8278;
    --isf-accent: #c8503a;
    --isf-accent-light: #f5e8e4;
    --isf-gold: #b8965a;
    --isf-gold-light: #f9f3e8;
    --isf-sage: #5a7a62;
    --isf-sage-light: #eaf1eb;
    --isf-border: #e8e2d8;
    --isf-card: #ffffff;
    --isf-shadow: 0 2px 20px rgba(26,23,20,0.07);
    --isf-shadow-lg: 0 8px 40px rgba(26,23,20,0.12);
    --isf-font-display: 'Playfair Display', Georgia, serif;
    --isf-font-body: 'DM Sans', sans-serif;
    --isf-font-mono: 'DM Mono', monospace;

    background: var(--isf-cream);
    color: var(--isf-ink);
    font-family: var(--isf-font-body);
    font-size: 17px;
    line-height: 1.75;
}
.isf-guide-container .isf-container {
    max-width: 780px;
    margin: 0 auto;
    padding: 0 24px;
}
.isf-guide-container .update-banner {
    background: var(--isf-gold-light);
    border-left: 3px solid var(--isf-gold);
    padding: 10px 20px;
    font-size: 13px;
    color: var(--isf-ink-soft);
    font-family: var(--isf-font-mono);
}
.isf-guide-container .update-banner strong { color: var(--isf-gold); }
.isf-guide-container .isf-article-header {
    padding: 40px 0 40px;
    border-bottom: 1px solid var(--isf-border);
}
.isf-guide-container .category-tag {
    display: inline-block;
    background: var(--isf-accent);
    color: white;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    padding: 4px 12px;
    border-radius: 2px;
    margin-bottom: 18px;
}
.isf-guide-container .isf-article-header h1 {
    font-family: var(--isf-font-display);
    font-size: clamp(28px, 4vw, 44px);
    line-height: 1.2;
    font-weight: 700;
    margin-bottom: 18px;
    color: var(--isf-ink);
}
.isf-guide-container .isf-article-header h1 em { color: var(--isf-accent); font-style: italic; }
.isf-guide-container .isf-subtitle {
    font-size: 19px;
    color: var(--isf-ink-soft);
    max-width: 620px;
    margin-bottom: 28px;
    font-weight: 300;
}
.isf-guide-container .isf-meta-row {
    display: flex;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
}
.isf-guide-container .isf-author-block { display: flex; align-items: center; gap: 10px; }
.isf-guide-container .isf-author-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, #d4967a, #b8965a);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--isf-font-display);
    font-size: 16px;
    color: white;
    font-weight: 700;
}
.isf-guide-container .isf-author-info { display: flex; flex-direction: column; }
.isf-guide-container .isf-author-name { font-size: 14px; font-weight: 600; }
.isf-guide-container .isf-author-title { font-size: 12px; color: var(--isf-muted); }
.isf-guide-container .isf-meta-divider { width: 1px; height: 28px; background: var(--isf-border); }
.isf-guide-container .isf-meta-item { font-size: 13px; color: var(--isf-muted); }
.isf-guide-container .isf-meta-item strong { color: var(--isf-ink-soft); font-weight: 500; }
.isf-guide-container .isf-trust-row { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 28px; }
.isf-guide-container .isf-trust-badge {
    display: flex;
    align-items: center;
    gap: 6px;
    background: white;
    border: 1px solid var(--isf-border);
    border-radius: 20px;
    padding: 5px 12px;
    font-size: 12px;
    font-weight: 500;
}
.isf-guide-container .isf-dot { width: 7px; height: 7px; border-radius: 50%; }
.isf-guide-container .isf-dot-green { background: #5a9a6a; }
.isf-guide-container .isf-dot-gold { background: var(--isf-gold); }
.isf-guide-container .isf-dot-blue { background: #5a7ab8; }

.isf-guide-container .isf-audio-section {
    background: var(--isf-ink);
    border-radius: 10px;
    padding: 20px 24px;
    margin: 40px 0;
    display: flex;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
}
.isf-guide-container .isf-audio-icon {
    width: 48px;
    height: 48px;
    background: var(--isf-accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: transform 0.2s;
}
.isf-guide-container .isf-audio-icon:hover { transform: scale(1.08); background: #d4604a; }
.isf-guide-container .isf-audio-icon svg { fill: white; width: 18px; height: 18px; display: block;}
.isf-guide-container .isf-audio-info { flex: 1; min-width: 180px; }
.isf-guide-container .isf-audio-label { font-size: 11px; text-transform: uppercase; letter-spacing: 0.1em; color: var(--isf-muted); font-family: var(--isf-font-mono); }
.isf-guide-container .isf-audio-title { font-size: 15px; font-weight: 600; color: white; }
.isf-guide-container .isf-audio-duration { font-size: 12px; color: var(--isf-muted); margin-top: 3px; }
.isf-guide-container .isf-audio-waveform { display: flex; align-items: center; gap: 3px; opacity: 0.5; }
.isf-guide-container .isf-audio-waveform span {
    display: block;
    width: 3px;
    background: var(--isf-accent);
    border-radius: 2px;
    animation: isf-wave 1.2s ease infinite;
}
@keyframes isf-wave { 0%,100% { transform: scaleY(1); } 50% { transform: scaleY(2.2); } }

.isf-guide-container .isf-article-body { padding: 48px 0; }
.isf-guide-container .isf-article-body p { margin-bottom: 22px; color: var(--isf-ink-soft); }
.isf-guide-container .isf-article-body h2 {
    font-family: var(--isf-font-display);
    font-size: clamp(22px, 3vw, 30px);
    margin: 52px 0 18px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--isf-border);
    font-weight: 700;
}
.isf-guide-container .isf-article-body h3 {
    font-family: var(--isf-font-display);
    font-size: 20px;
    margin: 34px 0 12px;
    font-weight: 400;
    font-style: italic;
}
.isf-guide-container .isf-stat-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin: 36px 0;
}
@media (max-width: 600px) {
    .isf-guide-container .isf-stat-row { grid-template-columns: 1fr 1fr; }
}
.isf-guide-container .isf-stat-card {
    background: white;
    border: 1px solid var(--isf-border);
    border-radius: 8px;
    padding: 20px 18px;
    text-align: center;
    box-shadow: var(--isf-shadow);
}
.isf-guide-container .isf-stat-number {
    font-family: var(--isf-font-display);
    font-size: 32px;
    font-weight: 700;
    color: var(--isf-accent);
}
.isf-guide-container .isf-stat-label { font-size: 12px; color: var(--isf-muted); margin-top: 6px; text-transform: uppercase; letter-spacing: 0.06em; }

.isf-guide-container .isf-callout {
    border-radius: 8px;
    padding: 20px 24px;
    margin: 30px 0;
}
.isf-guide-container .isf-callout--expert { background: var(--isf-sage-light); border-left: 4px solid var(--isf-sage); }
.isf-guide-container .isf-callout-label {
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    font-family: var(--isf-font-mono);
    margin-bottom: 6px;
}
.isf-guide-container .isf-callout--expert .isf-callout-label { color: var(--isf-sage); }

.isf-guide-container .isf-flowchart-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin: 32px 0;
}
.isf-guide-container .isf-flow-step {
    background: white;
    flex: 1 1 160px;
    border-radius: 12px;
    padding: 14px 12px;
    border: 1px solid var(--isf-border);
    text-align: center;
    font-family: var(--isf-font-mono);
    font-size: 12px;
    font-weight: 500;
}
.isf-guide-container .isf-flow-step strong { display: block; font-size: 15px; margin-bottom: 6px; font-family: var(--isf-font-body); color: var(--isf-accent); }

.isf-guide-container .isf-table-wrapper { overflow-x: auto; margin: 36px 0; border-radius: 10px; box-shadow: var(--isf-shadow-lg); border: 1px solid var(--isf-border); }
.isf-guide-container table { width: 100%; border-collapse: collapse; background: white; font-size: 14px; }
.isf-guide-container thead tr { background: var(--isf-ink); color: white; }
.isf-guide-container thead th { padding: 14px 16px; text-align: left; font-weight: 600; font-size: 12px; letter-spacing: 0.06em; text-transform: uppercase; font-family: var(--isf-font-mono); }
.isf-guide-container tbody tr { border-bottom: 1px solid var(--isf-border); }
.isf-guide-container tbody td { padding: 14px 16px; color: var(--isf-ink-soft); }
.isf-guide-container .isf-winner-row { background: var(--isf-gold-light); }

.isf-guide-container .isf-pros-cons { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin: 30px 0; }
@media (max-width: 560px) {
    .isf-guide-container .isf-pros-cons { grid-template-columns: 1fr; }
}
.isf-guide-container .isf-pros-cons-card { background: white; border-radius: 8px; padding: 20px; border: 1px solid var(--isf-border); }
.isf-guide-container .isf-pros-cons-card h4 { font-size: 13px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; margin-bottom: 12px; font-family: var(--isf-font-mono); }
.isf-guide-container .isf-pros-card h4 { color: var(--isf-sage); }
.isf-guide-container .isf-cons-card h4 { color: var(--isf-accent); }
.isf-guide-container .isf-pros-cons-card ul { list-style: none; }
.isf-guide-container .isf-pros-cons-card li { padding: 5px 0; font-size: 14px; display: flex; gap: 8px; align-items: flex-start; }
.isf-guide-container .isf-pros-card li::before { content: '✓'; color: var(--isf-sage); font-weight: 700; }
.isf-guide-container .isf-cons-card li::before { content: '✗'; color: var(--isf-accent); font-weight: 700; }

.isf-guide-container .isf-radar-grid { display: flex; flex-wrap: wrap; gap: 2rem; justify-content: center; margin: 2rem 0; }
.isf-guide-container .isf-radar-card { background: white; border-radius: 16px; padding: 1rem; max-width: 380px; box-shadow: var(--isf-shadow); border: 1px solid var(--isf-border); }
.isf-guide-container .isf-radar-card img { width: 100%; border-radius: 12px; }
.isf-guide-container .isf-image-caption { font-size: 12px; text-align: center; margin-top: 8px; color: var(--isf-muted); }

.isf-guide-container .isf-btn-group { display: flex; flex-wrap: wrap; gap: 1rem; justify-content: center; margin: 2rem 0; }
.isf-guide-container .isf-btn-primary {
    background: #7e3c55;
    color: white;
    padding: 0.9rem 1.8rem;
    border-radius: 60px;
    font-weight: 600;
    text-decoration: none;
    display: inline-block;
    transition: 0.2s;
}
.isf-guide-container .isf-btn-primary:hover { background: #9d4c6e; transform: translateY(-2px); }
.isf-guide-container .isf-btn-secondary {
    background: transparent;
    border: 1.5px solid #7e3c55;
    color: #7e3c55;
    padding: 0.85rem 1.8rem;
    border-radius: 60px;
    font-weight: 600;
    text-decoration: none;
}

.isf-guide-container .isf-faq-item {
    background: white;
    border: 1px solid var(--isf-border);
    border-radius: 8px;
    margin-bottom: 10px;
    overflow: hidden;
}
.isf-guide-container .isf-faq-question {
    width: 100%;
    background: none;
    border: none;
    padding: 18px 22px;
    text-align: left;
    font-weight: 600;
    display: flex;
    justify-content: space-between;
    cursor: pointer;
}
.isf-guide-container .isf-faq-question:hover { background: var(--isf-cream); }
.isf-guide-container .isf-faq-icon {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: var(--isf-border);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
}
.isf-guide-container .isf-faq-answer { display: none; padding: 0 22px 18px; font-size: 15px; color: var(--isf-ink-soft); border-top: 1px solid var(--isf-border); padding-top: 14px; }
.isf-guide-container .isf-faq-item.isf-open .isf-faq-answer { display: block; }
.isf-guide-container .isf-faq-item.isf-open .isf-faq-icon { transform: rotate(45deg); background: var(--isf-accent); color: white; }

.isf-guide-container .isf-references { margin-top: 56px; padding-top: 28px; border-top: 2px solid var(--isf-border); }
.isf-guide-container .isf-references ol { padding-left: 18px; }
.isf-guide-container .isf-references li { font-size: 13px; color: var(--isf-muted); margin-bottom: 7px; }

.isf-guide-container .isf-author-bio {
    background: white;
    border: 1px solid var(--isf-border);
    border-radius: 10px;
    padding: 28px 30px;
    margin-top: 52px;
    display: flex;
    gap: 22px;
    align-items: flex-start;
}
.isf-guide-container .isf-author-bio-avatar {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    background: linear-gradient(135deg, #d4967a, #b8965a);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 26px;
    color: white;
    font-weight: 700;
}
.isf-guide-container .isf-author-bio-content h4 { font-family: var(--isf-font-display); font-size: 18px; margin-bottom: 2px; }
.isf-guide-container .isf-author-bio-content .isf-role { font-size: 13px; color: var(--isf-accent); font-family: var(--isf-font-mono); margin-bottom: 10px; }
@media (max-width: 640px) {
    .isf-guide-container .isf-author-bio { flex-direction: column; }
}


.isf-guide-container .isf-intent-block {
    background: white;
    border-left: 4px solid var(--isf-accent);
    padding: 20px 24px;
    margin: 20px 0 32px;
    border-radius: 8px;
    box-shadow: var(--isf-shadow);
}
.isf-guide-container .isf-intent-block p {
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--isf-ink);
}
.isf-guide-container .isf-intent-block ul {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin: 0;
    padding-left: 0;
    list-style: none;
}
.isf-guide-container .isf-intent-block li {
    flex: 1 1 200px;
    font-size: 14px;
    background: var(--isf-cream);
    padding: 8px 12px;
    border-radius: 40px;
    border: 1px solid var(--isf-border);
}
.isf-guide-container .isf-social-proof {
    background: linear-gradient(135deg, var(--isf-gold-light), white);
    border-radius: 24px;
    padding: 24px 28px;
    margin: 40px 0;
    text-align: center;
    border: 1px solid var(--isf-gold);
}
.isf-guide-container .isf-social-proof p:first-child {
    font-weight: 800;
    font-size: 1.4rem;
    color: var(--isf-accent);
    margin-bottom: 8px;
}
.isf-guide-container .isf-pre-cta {
    background: var(--isf-sage-light);
    border-radius: 20px;
    padding: 18px 24px;
    margin: 32px 0 20px;
    text-align: center;
    font-weight: 500;
}
.isf-guide-container .isf-pre-cta p {
    margin-bottom: 8px;
}
.isf-guide-container .couple-cta {
    background: var(--isf-ink);
    border-radius: 24px;
    padding: 28px;
    margin: 48px 0 20px;
    text-align: center;
    color: white;
}
.isf-guide-container .couple-cta h3 {
    color: var(--isf-gold);
    margin-top: 0;
    font-family: var(--isf-font-display);
}
.isf-guide-container .couple-cta .isf-btn-secondary {
    border-color: white;
    color: white;
    margin-top: 12px;
}
.isf-guide-container .couple-cta .isf-btn-secondary:hover {
    background: rgba(255,255,255,0.1);
}
@media (max-width: 640px) {
    .isf-guide-container .isf-intent-block ul {
        flex-direction: column;
        gap: 8px;
    }
    .isf-guide-container .isf-social-proof p:first-child {
        font-size: 1.2rem;
    }
}

.isf-guide-container .isf-author-bio-avatar {
    width: 96px;     
    height: 96px;
    border-radius: 50%;
    overflow: hidden;  
    flex-shrink: 0;
}
.isf-guide-container .isf-author-bio-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover; 
    display: block;
}


.isf-guide-container .isf-author-quote {
    margin-top: 12px;
    padding: 12px 16px;
    background: var(--isf-cream);
    border-left: 3px solid var(--isf-accent);
    border-radius: 8px;
    font-style: italic;
    color: var(--isf-ink-soft);
    font-size: 0.95rem;
}


@media (max-width: 640px) {
    .isf-guide-container .isf-author-bio-avatar {
        width: 80px;
        height: 80px;
    }
    .isf-guide-container .isf-author-quote {
        font-size: 0.85rem;
        padding: 8px 12px;
    }
}



.isf-guide-container .isf-radar-card.isf-pdf-card,
.isf-guide-container .isf-radar-card.isf-poster-card {
    text-align: center;
    padding-bottom: 1.5rem;
}

.isf-guide-container .isf-preview-icon {
    font-size: 48px;
    text-align: center;
    margin: 16px 0 8px;
}

.isf-guide-container .isf-btn-small {
    display: inline-block;
    background: var(--isf-accent-light);
    color: var(--isf-accent);
    padding: 6px 12px;
    border-radius: 40px;
    font-size: 12px;
    font-weight: 500;
    text-decoration: none;
    margin-top: 12px;
    transition: 0.2s;
    border: none;
    cursor: pointer;
}

.isf-guide-container .isf-btn-small:hover {
    background: var(--isf-accent);
    color: white;
}


.isf-guide-container .isf-poster-card img {
    width: 100%;
    border-radius: 12px;
    margin-bottom: 8px;
}


.isf-guide-container .isf-pdf-wrapper {
    display: flex;
    justify-content: center;
    margin: 2rem 0 1rem;
}
.isf-guide-container .isf-pdf-card {
    max-width: 320px;
    width: 100%;
    background: white;
    border-radius: 16px;
    padding: 1rem;
    box-shadow: var(--isf-shadow);
    border: 1px solid var(--isf-border);
    text-align: center;
}