/* Study-guide pages (IELTS Vocabulary, Grammar, Band Score, Practice Tests): article + sidebar */
.rs-wrap { max-width: 1180px; margin: 0 auto; }
.rs-crumbs { font-size: .85rem; color: var(--ink-faint); margin: 0 0 14px; }
.rs-crumbs a { color: var(--ink-soft); }
.rs-layout { display: grid; grid-template-columns: minmax(0, 1fr) 340px; gap: 32px; align-items: start; }
.rs-head { background: linear-gradient(135deg, var(--primary-soft), #f0fbff); border: 1px solid #dfe3fb; border-radius: var(--radius-lg); padding: 26px 28px; margin-bottom: 26px; }
.rs-kicker { display: inline-block; font-size: .75rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--primary-dark); background: #fff; border-radius: 99px; padding: 4px 10px; margin-bottom: 10px; }
.rs-head h1 { margin: 0; font-size: clamp(1.9rem, 3.6vw, 2.6rem); }
.rs-body { max-width: none; font-size: 1.02rem; }
.rs-body h2, .rs-body h3 { color: var(--ink); }
.rs-body > p:first-child { font-size: 1.12rem; color: var(--ink); }
.rs-inline-cta { display: flex; gap: 18px; align-items: center; justify-content: space-between; flex-wrap: wrap; background: linear-gradient(135deg, #4f46e5, #7c3aed); color: #fff; border-radius: var(--radius-lg); padding: 22px 24px; margin: 30px 0; }
.rs-inline-cta h2 { color: #fff; margin: 0 0 4px; font-size: 1.25rem; }
.rs-inline-cta p { margin: 0; color: rgba(255, 255, 255, .9); max-width: 520px; }
.rs-inline-cta .btn { background: #fff; color: var(--primary-dark); border-color: #fff; }
.rs-tips-head { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; flex-wrap: wrap; margin-bottom: 12px; }
.rs-tips-head h2 { margin: 0; font-size: 1.3rem; }
.rs-tip-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.rs-tip-grid .blog-card { margin: 0; }
.rs-tip-grid .blog-card h3 { font-size: .98rem; line-height: 1.35; }
.rs-side { position: sticky; top: 96px; display: grid; gap: 16px; }
.rs-box { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 20px; box-shadow: var(--shadow-sm); }
.rs-box h3 { margin: 0 0 10px; font-size: 1rem; }
.rs-cta-box { border: 2px solid #c7cbfa; background: linear-gradient(180deg, #fff, #f7f7ff); }
.rs-cta-box h2 { margin: 6px 0 6px; font-size: 1.3rem; }
.rs-cta-box p { margin: 0 0 12px; color: var(--ink-soft); font-size: .93rem; }
.rs-cta-badge { display: inline-block; font-size: .74rem; font-weight: 700; color: var(--success-dark); background: var(--success-soft); border-radius: 99px; padding: 3px 10px; }
.rs-ticks { list-style: none; margin: 0 0 16px; padding: 0; display: grid; gap: 7px; font-size: .9rem; }
.rs-ticks li::before { content: '✓'; color: var(--success); font-weight: 800; margin-right: 8px; }
.rs-cta-box .btn.block { display: block; width: 100%; text-align: center; }
.rs-login { margin: 10px 0 0 !important; text-align: center; font-size: .86rem !important; }
.rs-links { list-style: none; margin: 0; padding: 0; display: grid; gap: 9px; }
.rs-links a { font-size: .92rem; line-height: 1.4; font-weight: 500; }
.rs-more { display: inline-block; margin-top: 12px; font-size: .88rem; font-weight: 600; }
.rs-tools { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.rs-tools a { display: flex; gap: 10px; align-items: center; padding: 9px 12px; border-radius: 10px; background: var(--surface-2); font-weight: 600; font-size: .92rem; text-decoration: none; }
.rs-tools a:hover { background: var(--primary-soft); }
.rs-band { display: flex; gap: 20px; align-items: center; justify-content: space-between; flex-wrap: wrap; margin: 40px 0 10px; padding: 26px 28px; border-radius: var(--radius-lg); background: var(--surface); border: 1px solid var(--border); }
.rs-band h2 { margin: 0 0 4px; }
.rs-band p { margin: 0; color: var(--ink-soft); }
.rs-band-actions { display: flex; gap: 10px; flex-wrap: wrap; }
@media (max-width: 1000px) {
  .rs-layout { grid-template-columns: 1fr; }
  .rs-side { position: static; grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .rs-side .rs-cta-box { grid-column: 1 / -1; }
}
@media (max-width: 700px) {
  .rs-side { grid-template-columns: 1fr; }
  .rs-tip-grid { grid-template-columns: 1fr; }
  .rs-head { padding: 20px; }
}
.rs-head-cta { display: none; margin-top: 12px; font-weight: 700; }
@media (max-width: 1000px) { .rs-head-cta { display: inline-block; } }