/* ─── Shell ─── */
.rbi-shell { background: #f0f4ff; min-height: 100vh; }

/* ─── Hero ─── */
.rbi-hero {
    background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 50%, #3157D5 100%);
    padding: 4.5rem 0 5rem;
    color: #fff;
    position: relative;
    overflow: hidden;
}
.rbi-hero::before {
    content: '';
    position: absolute; inset: 0;
    background: radial-gradient(ellipse at 75% 40%, rgba(99,102,241,0.20) 0%, transparent 60%);
    pointer-events: none;
}
.rbi-hero-grid {
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    gap: 3rem;
    align-items: center;
}
.rbi-eyebrow {
    font-size: 0.74rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    font-weight: 800;
    color: #93c5fd;
    margin-bottom: 1rem;
}
.rbi-hero-copy h1 {
    font-size: clamp(2rem, 3.6vw, 3.3rem);
    font-weight: 800;
    color: #fff;
    line-height: 1.08;
    margin-bottom: 1.1rem;
}
.rbi-hero-lead {
    color: rgba(255,255,255,0.88);
    font-size: 1.08rem;
    line-height: 1.55;
    max-width: 560px;
    margin-bottom: 1.4rem;
}
.rbi-hero-meta { display: flex; gap: 0.5rem; flex-wrap: wrap; margin-bottom: 1.6rem; }
.rbi-meta-pill {
    display: inline-flex; align-items: center;
    background: rgba(255,255,255,0.10);
    border: 1px solid rgba(255,255,255,0.18);
    border-radius: 999px;
    padding: 0.28rem 0.8rem;
    font-size: 0.8rem; font-weight: 600;
    color: rgba(255,255,255,0.9);
}
.rbi-hero-actions { display: flex; gap: 0.9rem; flex-wrap: wrap; }
.rbi-btn-primary {
    background: #fff; color: #1d4ed8; border: none;
    font-weight: 700; box-shadow: 0 8px 24px rgba(0,0,0,0.18);
    transition: all 0.2s;
}
.rbi-btn-primary:hover { background: #f0f9ff; color: #1e40af; transform: translateY(-2px); }
.rbi-btn-outline {
    border: 2px solid rgba(255,255,255,0.4); color: #fff; background: transparent;
    font-weight: 700; transition: all 0.2s;
}
.rbi-btn-outline:hover { border-color: #fff; background: rgba(255,255,255,0.10); color: #fff; transform: translateY(-2px); }
.rbi-hero-art { display: flex; justify-content: center; }
.rbi-hero-svg { width: 100%; max-width: 560px; height: auto; }

/* ─── Facts band ─── */
.rbi-facts-band { background: #fff; border-bottom: 1px solid #e2e8f0; padding: 1.75rem 0; }
.rbi-facts-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.25rem; }
.rbi-fact { display: flex; gap: 0.85rem; align-items: flex-start; }
.rbi-fact-icon {
    flex-shrink: 0;
    width: 40px; height: 40px; border-radius: 12px;
    background: #eef2ff; color: #3157D5;
    display: flex; align-items: center; justify-content: center;
    font-size: 1rem;
}
.rbi-fact strong { display: block; font-size: 0.95rem; color: #0f172a; margin-bottom: 0.15rem; }
.rbi-fact span { font-size: 0.82rem; color: #64748b; line-height: 1.45; }

/* ─── Cards ─── */
.rbi-card {
    background: #fff;
    border: 1px solid #e2e8f0;
    border-radius: 1.25rem;
    padding: 2rem 2.25rem;
    box-shadow: 0 4px 16px rgba(15,23,42,0.04);
}
.rbi-section-eyebrow {
    font-size: 0.72rem; letter-spacing: 0.15em; text-transform: uppercase;
    font-weight: 800; color: #3157D5; margin-bottom: 0.5rem;
}
.rbi-card h2 { font-size: clamp(1.35rem, 2.2vw, 1.7rem); font-weight: 800; color: #0f172a; margin-bottom: 1rem; }
.rbi-card h3 { font-size: 1.08rem; font-weight: 700; color: #0f172a; margin: 1.25rem 0 0.6rem; }
.rbi-lead { font-size: 1.05rem; color: #334155; font-weight: 500; }
.rbi-card p { color: #475569; line-height: 1.65; }

/* Timeline */
.rbi-timeline { list-style: none; margin: 1.25rem 0 0; padding: 0; display: flex; flex-direction: column; gap: 1rem; }
.rbi-timeline li { display: flex; gap: 0.9rem; align-items: flex-start; }
.rbi-tl-dot {
    flex-shrink: 0;
    width: 30px; height: 30px; border-radius: 50%;
    background: #eef2ff; color: #3157D5;
    display: flex; align-items: center; justify-content: center;
    font-size: 0.82rem; font-weight: 800;
}
.rbi-timeline li div { font-size: 0.95rem; color: #475569; line-height: 1.6; padding-top: 0.15rem; }
.rbi-timeline li div strong { color: #0f172a; }

/* Callout */
.rbi-callout {
    display: flex; align-items: flex-start; gap: 0.6rem;
    background: #fffbeb; border: 1px solid #fde68a; border-radius: 1rem;
    padding: 1rem 1.25rem; margin-top: 1.25rem;
}
.rbi-callout i { color: #d97706; margin-top: 0.2rem; }
.rbi-callout p { color: #78350f; font-size: 0.92rem; }
.rbi-callout-green {
    background: #f0fdf4; border-color: #bbf7d0;
}
.rbi-callout-green i { color: #15803d; }
.rbi-callout-green p { color: #14532d; }

/* Chips */
.rbi-chip-list { display: flex; flex-wrap: wrap; gap: 0.6rem; margin: 1rem 0 0.25rem; }
.rbi-chip {
    display: inline-flex; align-items: center;
    background: #eef2ff; color: #1e40af;
    border: 1px solid #c7d2fe; border-radius: 999px;
    padding: 0.4rem 0.95rem; font-size: 0.85rem; font-weight: 600;
}

/* Direction list */
.rbi-direction-list { display: flex; flex-direction: column; gap: 0.9rem; margin-top: 1rem; }
.rbi-direction {
    display: flex; gap: 0.95rem; align-items: flex-start;
    background: #f8fafc; border: 1px solid #e2e8f0; border-radius: 1rem;
    padding: 1rem 1.25rem;
}
.rbi-direction i {
    flex-shrink: 0; margin-top: 0.2rem;
    width: 38px; height: 38px; border-radius: 10px;
    background: #e0e7ff; color: #4338ca;
    display: flex; align-items: center; justify-content: center;
    font-size: 1rem;
}
.rbi-direction div { font-size: 0.94rem; color: #475569; line-height: 1.6; }
.rbi-direction div strong { color: #0f172a; }

/* Check list */
.rbi-check-list { list-style: none; margin: 0.75rem 0 0; padding: 0; display: flex; flex-direction: column; gap: 0.7rem; }
.rbi-check-list li { display: flex; gap: 0.65rem; align-items: flex-start; }
.rbi-check-list i { color: #10b981; margin-top: 0.25rem; }
.rbi-check-list span { font-size: 0.95rem; color: #475569; line-height: 1.55; }
.rbi-check-list strong { color: #0f172a; }

/* Phases */
.rbi-phase {
    background: #f8fafc; border: 1px solid #e2e8f0; border-left: 4px solid #3157D5;
    border-radius: 0.9rem; padding: 1.25rem 1.5rem; margin-top: 1rem;
}
.rbi-phase-head { display: flex; align-items: center; gap: 0.75rem; margin-bottom: 0.5rem; }
.rbi-phase-num {
    background: #3157D5; color: #fff;
    font-size: 0.7rem; font-weight: 800; letter-spacing: 0.08em; text-transform: uppercase;
    border-radius: 999px; padding: 0.22rem 0.7rem; white-space: nowrap;
}
.rbi-phase h3 { margin: 0; font-size: 1.02rem; font-weight: 700; color: #0f172a; }
.rbi-phase ul { margin: 0; padding-left: 1.1rem; display: flex; flex-direction: column; gap: 0.4rem; }
.rbi-phase li { font-size: 0.93rem; color: #475569; line-height: 1.55; }

/* Standards cards */
.rbi-std-card {
    background: #fff; border: 1px solid #e2e8f0; border-radius: 1rem;
    padding: 1.25rem; height: 100%;
}
.rbi-std-badge {
    display: inline-block; border-radius: 6px;
    padding: 0.22rem 0.55rem;
    font-size: 0.68rem; font-weight: 800; text-transform: uppercase; letter-spacing: 0.08em;
    margin-bottom: 0.6rem;
}
.rbi-std-card h3 { font-size: 1rem; font-weight: 700; color: #0f172a; margin: 0 0 0.4rem; }
.rbi-std-card p { font-size: 0.87rem; color: #64748b; margin: 0; }

/* FAQ */
.rbi-faq { display: flex; flex-direction: column; gap: 0.7rem; margin-top: 0.75rem; }
.rbi-faq details {
    background: #f8fafc; border: 1px solid #e2e8f0; border-radius: 0.9rem;
    padding: 0.9rem 1.1rem;
}
.rbi-faq summary {
    cursor: pointer; font-weight: 700; color: #0f172a; font-size: 0.95rem;
    list-style: none; display: flex; justify-content: space-between; align-items: center; gap: 0.75rem;
}
.rbi-faq summary::-webkit-details-marker { display: none; }
.rbi-faq summary::after { content: '\f078'; font-family: 'Font Awesome 6 Free'; font-weight: 900; font-size: 0.8rem; color: #94a3b8; transition: transform 0.2s; }
.rbi-faq details[open] summary::after { transform: rotate(180deg); }
.rbi-faq details p { margin: 0.6rem 0 0; font-size: 0.92rem; color: #475569; }

/* CTA card */
.rbi-cta-card {
    background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 50%, #3157D5 100%);
    border: none; color: #fff;
}
.rbi-cta-card h2 { color: #fff; }
.rbi-cta-card p { color: rgba(255,255,255,0.85); }
.rbi-cta-card .rbi-hero-actions { margin-top: 1rem; }

/* Disclaimer */
.rbi-disclaimer {
    font-size: 0.8rem; color: #94a3b8; line-height: 1.6; margin-top: 1.25rem;
}

/* ─── Sidebar ─── */
.rbi-side-sticky { position: sticky; top: 100px; }
.rbi-side-card {
    background: #fff; border: 1px solid #e2e8f0; border-radius: 1.25rem;
    padding: 1.4rem 1.5rem; box-shadow: 0 4px 16px rgba(15,23,42,0.04);
}
.rbi-side-title {
    font-size: 0.78rem; font-weight: 800; text-transform: uppercase; letter-spacing: 0.08em;
    color: #64748b; margin-bottom: 1rem;
}
.rbi-toc { display: flex; flex-direction: column; gap: 0.4rem; }
.rbi-toc a { font-size: 0.9rem; font-weight: 600; color: #334155; text-decoration: none; padding: 0.3rem 0.5rem; border-radius: 8px; }
.rbi-toc a:hover { background: #eef2ff; color: #3157D5; }
.rbi-side-links { display: flex; flex-direction: column; gap: 0.55rem; }
.rbi-side-links a { font-size: 0.9rem; font-weight: 600; color: #334155; text-decoration: none; }
.rbi-side-links a:hover { color: #3157D5; }
.rbi-side-cta { background: #f8fafc; border-color: #dbeafe; }

/* ─── Responsive ─── */
@media (max-width: 1023px) {
    .rbi-hero-grid { grid-template-columns: 1fr; gap: 2rem; }
    .rbi-facts-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 767px) {
    .rbi-hero { padding: 3rem 0 3.5rem; }
    .rbi-facts-grid { grid-template-columns: 1fr; }
    .rbi-card { padding: 1.5rem; }
    .rbi-side-sticky { position: static; }
}