:root { --qbt-ink: #16342d; --qbt-muted: #5b6f69; --qbt-green: #13795b; --qbt-mint: #eaf7f1; --qbt-line: #d9e8e1; --qbt-paper: #ffffff; }
.questions-by-topic-body { background: #f7fbf9; }
.questions-by-topic { box-sizing: border-box; color: var(--qbt-ink); margin: 0 auto; max-width: 1180px; padding: 28px 18px 80px; }
.questions-by-topic *, .questions-by-topic *::before, .questions-by-topic *::after { box-sizing: border-box; }
.questions-by-topic__breadcrumb { align-items: center; color: var(--qbt-muted); display: flex; flex-wrap: wrap; font-size: 14px; gap: 8px; margin-bottom: 18px; }
.questions-by-topic__breadcrumb a { color: var(--qbt-green); font-weight: 700; }
.questions-by-topic__hero { background: linear-gradient(135deg, #16342d, #176d55); border-radius: 22px; color: #fff; margin-top: 18px; padding: 44px; }
.questions-by-topic__hero h1 { color: #fff; font-size: 42px; line-height: 1.08; margin: 6px 0 14px; max-width: 820px; }
.questions-by-topic__hero > p:not(.questions-by-topic__eyebrow) { font-size: 18px; line-height: 1.65; margin: 0; max-width: 800px; }
.questions-by-topic__eyebrow { color: #bdf3db; font-size: 13px; font-weight: 800; letter-spacing: .09em; margin: 0; text-transform: uppercase; }
.questions-by-topic__actions { align-items: center; display: flex; flex-wrap: wrap; gap: 16px; margin-top: 25px; }
.questions-by-topic__button { background: #fff; border-radius: 999px; color: var(--qbt-green); font-weight: 800; padding: 12px 20px; text-decoration: none; }
.questions-by-topic__text-link { color: #fff; font-weight: 800; }
.questions-by-topic__intro { align-items: start; background: var(--qbt-mint); border: 1px solid var(--qbt-line); border-radius: 16px; display: grid; gap: 28px; grid-template-columns: 1.2fr 1fr; margin: 26px 0; padding: 26px; }
.questions-by-topic__intro .questions-by-topic__eyebrow, .questions-by-topic__faq .questions-by-topic__eyebrow { color: var(--qbt-green); }
.questions-by-topic__intro h2, .questions-by-topic__faq h2 { font-size: 25px; margin: 5px 0 0; }
.questions-by-topic__intro ol { line-height: 1.8; margin: 0; padding-left: 22px; }
.questions-by-topic__grid { display: grid; gap: 18px; grid-template-columns: repeat(2, minmax(0, 1fr)); }
.questions-by-topic__card { background: var(--qbt-paper); border: 1px solid var(--qbt-line); border-radius: 16px; padding: 22px; }
.questions-by-topic__card-heading { align-items: start; display: grid; gap: 12px; grid-template-columns: auto 1fr; }
.questions-by-topic__card-heading > span { background: var(--qbt-mint); border-radius: 7px; color: var(--qbt-green); font-size: 13px; font-weight: 800; padding: 5px 8px; }
.questions-by-topic__card h2 { font-size: 20px; line-height: 1.3; margin: 1px 0 0; }
.questions-by-topic__card h2 a { color: var(--qbt-ink); text-decoration: none; }
.questions-by-topic__card h2 a:hover, .questions-by-topic__revision-link:hover { text-decoration: underline; }
.questions-by-topic__group { color: var(--qbt-muted); font-size: 13px; margin: 10px 0 0 49px; }
.questions-by-topic__revision-link { color: var(--qbt-green); display: inline-block; font-size: 14px; font-weight: 800; margin-top: 15px; }
.questions-by-topic__papers { list-style: none; margin: 18px 0 0; padding: 0; }
.questions-by-topic__papers li + li { border-top: 1px solid var(--qbt-line); margin-top: 10px; padding-top: 10px; }
.questions-by-topic__papers a { color: var(--qbt-ink); display: block; text-decoration: none; }
.questions-by-topic__papers a:hover strong { color: var(--qbt-green); }
.questions-by-topic__papers small { color: var(--qbt-muted); display: block; line-height: 1.5; margin-top: 4px; }
.questions-by-topic__empty { color: var(--qbt-muted); font-size: 14px; line-height: 1.55; margin: 16px 0 0; }
.questions-by-topic__faq { margin-top: 34px; max-width: 850px; }
.questions-by-topic__faq details { background: #fff; border: 1px solid var(--qbt-line); border-radius: 12px; margin-top: 10px; padding: 15px 17px; }
.questions-by-topic__faq summary { cursor: pointer; font-weight: 800; }
.questions-by-topic__faq details p { color: var(--qbt-muted); line-height: 1.6; margin: 10px 0 0; }
@media (max-width: 760px) { .questions-by-topic__hero { padding: 30px 22px; } .questions-by-topic__hero h1 { font-size: 33px; } .questions-by-topic__intro, .questions-by-topic__grid { grid-template-columns: 1fr; } }