.rt-ab-page { padding-bottom: 80px; }
.rt-ab-hero { width: 100%; padding: 84px 20px 110px; margin-bottom: -48px; text-align: center; color: #fff; background-color: #0F1F2E; background-image: linear-gradient(to right, rgba(15, 31, 46, .9), rgba(15, 31, 46, .82)), url('/assets/images/banner/banner.webp'); background-size: cover; background-position: center; }
[data-theme="dark"] .rt-ab-hero { background-color: #050505; background-image: linear-gradient(to right, rgba(0, 0, 0, .88), rgba(0, 0, 0, .8)), url('/assets/images/banner/banner-dark.webp'); }
.rt-ab-hero h1 { margin: 0 0 14px; font-size: clamp(30px, 5vw, 46px); font-weight: 800; line-height: 1.25; color: #fff; }
.rt-ab-hero h1 .rt-hl { color: #4ADE80; }
.rt-ab-hero p { max-width: 720px; margin: 0 auto; font-size: 15.5px; line-height: 1.85; color: #E2E8F0; }
.rt-ab-hero p strong { color: #fff; }

.rt-ab-stats { position: relative; z-index: 10; display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; max-width: 1000px; margin: 0 auto; padding: 0 20px; }
.rt-ab-stat { display: flex; flex-direction: column; align-items: center; gap: 4px; padding: 18px 12px; text-align: center; background: var(--rt-card-bg); border: 1px solid var(--rt-border); border-radius: 16px; box-shadow: 0 10px 30px rgba(15, 31, 46, .08); }
.rt-ab-stat strong { font-size: 24px; font-weight: 800; line-height: 1.2; color: var(--rt-accent); }
.rt-ab-stat span { font-size: 12.5px; font-weight: 600; color: var(--rt-text-muted); }

.rt-ab-sec { max-width: 1000px; margin: 52px auto 0; padding: 0 20px; }
.rt-ab-sec h2 { margin: 0 0 12px; font-size: 24px; font-weight: 800; color: var(--rt-text-main); scroll-margin-top: calc(var(--header-h, 70px) + 16px); }
.rt-ab-sec > p { margin: 0 0 14px; font-size: 15px; line-height: 1.9; color: var(--rt-text-muted); }
.rt-ab-sec p strong { font-weight: 700; color: var(--rt-text-main); }
.rt-ab-sec p a { color: var(--rt-accent); font-weight: 600; text-decoration: none; }
.rt-ab-sec p a:hover { text-decoration: underline; }
.rt-ab-sec section[id], .rt-ab-sec[id] { scroll-margin-top: calc(var(--header-h, 70px) + 16px); }

.rt-ab-toc { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.rt-ab-toc a { padding: 6px 14px; font-size: 12.5px; font-weight: 600; color: var(--rt-accent); background: var(--rt-tint); border-radius: 30px; text-decoration: none; transition: var(--rt-ease, all .3s ease); }
.rt-ab-toc a:hover { color: #fff; background: var(--rt-accent); }

.rt-ab-quote { display: flex; align-items: center; gap: 16px; margin-top: 18px; padding: 20px 24px; background: var(--rt-tint); border-inline-start: 4px solid var(--rt-accent); border-radius: 14px; }
.rt-ab-quote i { font-size: 22px; color: var(--rt-accent); }
.rt-ab-quote p { margin: 0; font-size: 17px; font-weight: 700; line-height: 1.6; color: var(--rt-text-main); }

.rt-ab-ico { flex-shrink: 0; width: 46px; height: 46px; display: inline-flex; align-items: center; justify-content: center; font-size: 18px; color: var(--rt-accent); background: var(--rt-tint); border-radius: 14px; }
.rt-ab-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; margin-top: 18px; }
.rt-ab-card { display: flex; flex-direction: column; align-items: flex-start; gap: 8px; padding: 20px; background: var(--rt-card-bg); border: 1px solid var(--rt-border); border-radius: 18px; color: var(--rt-text-main); text-decoration: none; transition: var(--rt-ease, all .3s ease); }
.rt-ab-card:hover { border-color: var(--rt-accent); transform: translateY(-3px); box-shadow: 0 12px 28px rgba(22, 163, 74, .12); }
.rt-ab-card h3 { margin: 6px 0 0; font-size: 17px; font-weight: 800; }
.rt-ab-card p { margin: 0; font-size: 13.5px; line-height: 1.75; color: var(--rt-text-muted); }
.rt-ab-more { margin-top: auto; padding-top: 6px; font-size: 13px; font-weight: 700; color: var(--rt-accent); }
.rt-ab-more i { margin-inline-start: 4px; font-size: 11px; transition: transform .25s ease; }
.rt-ab-card:hover .rt-ab-more i { transform: translateX(4px); }

.rt-ab-why { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; margin-top: 16px; }
.rt-ab-why-item { display: flex; align-items: flex-start; gap: 14px; padding: 18px; background: var(--rt-card-bg); border: 1px solid var(--rt-border); border-radius: 16px; }
.rt-ab-why-item h3 { margin: 0 0 4px; font-size: 15.5px; font-weight: 800; color: var(--rt-text-main); }
.rt-ab-why-item p { margin: 0; font-size: 13.5px; line-height: 1.75; color: var(--rt-text-muted); }

.rt-ab-steps { display: grid; gap: 12px; margin: 16px 0 0; padding: 0; list-style: none; counter-reset: ab; }
.rt-ab-steps li { position: relative; padding: 18px 20px 18px 70px; background: var(--rt-card-bg); border: 1px solid var(--rt-border); border-radius: 16px; counter-increment: ab; }
.rt-ab-steps li::before { content: counter(ab); position: absolute; left: 20px; top: 18px; width: 34px; height: 34px; display: inline-flex; align-items: center; justify-content: center; font-size: 15px; font-weight: 800; color: #fff; background: var(--rt-accent); border-radius: 50%; }
.rt-ab-steps h3 { margin: 0 0 4px; font-size: 16px; font-weight: 800; color: var(--rt-text-main); }
.rt-ab-steps p { margin: 0; font-size: 14px; line-height: 1.75; color: var(--rt-text-muted); }

.rt-ab-founder { display: flex; align-items: flex-start; gap: 22px; padding: 26px; background: var(--rt-card-bg); border: 1px solid var(--rt-border); border-radius: 20px; box-shadow: var(--rt-card-shadow, 0 4px 15px rgba(15, 31, 46, .05)); }
.rt-ab-avatar { position: relative; overflow: hidden; flex-shrink: 0; width: 180px; height: 180px; display: inline-flex; align-items: center; justify-content: center; font-size: 48px; font-weight: 800; letter-spacing: .04em; color: #fff; background: var(--rt-accent); border-radius: 50%; }
.rt-ab-avatar img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: center top; display: block; }
.rt-ab-founder h3 { margin: 0; font-size: 22px; font-weight: 800; color: var(--rt-text-main); }
.rt-ab-role { display: block; margin: 4px 0 12px; padding: 0; font-size: 14px; font-weight: 700; color: var(--rt-accent); background: none; }
.rt-ab-founder p { margin: 0 0 10px; font-size: 14.5px; line-height: 1.85; color: var(--rt-text-muted); }
.rt-ab-link { display: inline-flex; align-items: center; gap: 8px; font-size: 14px; font-weight: 700; color: var(--rt-accent); text-decoration: none; }
.rt-ab-link:hover { text-decoration: underline; }
.rt-ab-link i { font-size: 12px; }

.rt-ab-faqs { background: var(--rt-card-bg); border: 1px solid var(--rt-border); border-radius: 18px; padding: 4px 24px; box-shadow: var(--rt-card-shadow, 0 4px 15px rgba(15, 31, 46, .05)); }
.rt-ab-faq { border-bottom: 1px solid var(--rt-border); }
.rt-ab-faq:last-child { border-bottom: none; }
.rt-ab-faq summary { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 16px 0; cursor: pointer; list-style: none; }
.rt-ab-faq summary::-webkit-details-marker { display: none; }
.rt-ab-faq summary h3 { margin: 0; font-size: 14.5px; font-weight: 700; line-height: 1.6; color: var(--rt-text-main); }
.rt-ab-faq summary::after { content: '+'; flex-shrink: 0; font-size: 22px; font-weight: 500; color: var(--rt-accent); }
.rt-ab-faq[open] summary::after { content: '\2212'; }
.rt-ab-faq[open] summary h3 { color: var(--rt-accent); }
.rt-ab-faq p { margin: 0; padding-bottom: 16px; font-size: 14.5px; line-height: 1.85; color: var(--rt-text-muted); }

.rt-ab-cta-card { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 26px 30px; background: var(--rt-card-bg); border: 1px solid var(--rt-border); border-radius: 18px; box-shadow: var(--rt-card-shadow, 0 4px 15px rgba(15, 31, 46, .05)); }
.rt-ab-cta-card h2 { margin: 0 0 6px; font-size: 20px; }
.rt-ab-cta-card p { margin: 0; font-size: 14.5px; line-height: 1.8; color: var(--rt-text-muted); }
.rt-ab-cta-card p a { color: var(--rt-accent); font-weight: 600; text-decoration: none; }
.rt-ab-btn { display: inline-flex; align-items: center; gap: 8px; flex-shrink: 0; padding: 12px 24px; border-radius: 30px; background: var(--rt-accent); color: #fff; font-size: 14px; font-weight: 700; text-decoration: none; transition: var(--rt-ease, all .3s ease); }
.rt-ab-btn:hover { filter: brightness(.93); transform: translateY(-2px); }

@media (max-width: 1024px) { .rt-ab-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 768px) {
    .rt-ab-hero { padding: 64px 16px 96px; }
    .rt-ab-stats { grid-template-columns: repeat(2, 1fr); gap: 10px; padding-inline: 16px; }
    .rt-ab-stat { padding: 14px 10px; }
    .rt-ab-stat strong { font-size: 20px; }
    .rt-ab-sec { margin-top: 40px; padding-inline: 16px; }
    .rt-ab-sec h2 { font-size: 20px; }
    .rt-ab-toc { flex-wrap: nowrap; overflow-x: auto; margin-inline: -16px; padding: 2px 16px 6px; scrollbar-width: none; }
    .rt-ab-toc::-webkit-scrollbar { display: none; }
    .rt-ab-toc a { flex-shrink: 0; white-space: nowrap; }
    .rt-ab-grid, .rt-ab-why { grid-template-columns: minmax(0, 1fr); gap: 10px; }
    .rt-ab-card { padding: 16px; }
    .rt-ab-steps li { padding: 16px 16px 16px 62px; }
    .rt-ab-steps li::before { left: 16px; top: 16px; }
    .rt-ab-founder { flex-direction: column; align-items: flex-start; gap: 14px; padding: 20px; }
    .rt-ab-avatar { width: 132px; height: 132px; font-size: 38px; border-radius: 50%; }
    .rt-ab-faqs { padding: 2px 16px; }
    .rt-ab-quote { padding: 16px 18px; }
    .rt-ab-quote p { font-size: 15.5px; }
    .rt-ab-cta-card { flex-direction: column; align-items: flex-start; padding: 22px; }
    .rt-ab-btn { width: 100%; justify-content: center; }
}