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20px;display:grid}.site-header__brand{color:var(--ink-900);font-size:1.2rem;font-weight:700;text-decoration:none}.site-header__nav{flex-wrap:wrap;align-items:center;gap:24px;display:flex}.site-header__nav-group{position:relative}.site-header__nav-trigger{appearance:none;color:var(--ink-700);cursor:pointer;background:0 0;border:none;align-items:center;gap:4px;padding:0;font-family:inherit;font-size:1rem;font-weight:500;display:inline-flex}.site-header__nav-trigger:after{content:"▾";font-size:.7em;line-height:1;transition:transform .15s}.site-header__nav-group--open .site-header__nav-trigger:after{transform:rotate(180deg)}.site-header__nav-trigger:hover,.site-header__nav-trigger:focus-visible{color:var(--brand-600);outline:none}.site-header__nav-dropdown{border:1px solid var(--surface-border);background:var(--surface);border-radius:14px;flex-direction:column;gap:4px;min-width:250px;padding:10px;display:none;position:absolute;top:calc(100% + 12px);left:0;box-shadow:0 18px 32px 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0;font-size:.88rem;line-height:1.35}.topics-page__topic-list{gap:8px;display:grid}.topics-page__topic-link{width:100%;color:inherit;background:color-mix(in srgb,var(--paper)96%,#f8fbff);border:1px solid color-mix(in srgb,var(--border)78%,#d9e4f0);box-shadow:none;border-radius:14px;justify-content:space-between;align-items:center;gap:14px;padding:13px 15px;text-decoration:none;transition:border-color .18s,background-color .18s,transform .18s,box-shadow .18s;display:flex}.topics-page__topic-link:hover{background:color-mix(in srgb,var(--brand-50)55%,var(--paper));border-color:color-mix(in srgb,var(--brand-300)55%,var(--border));transform:translateY(-1px);box-shadow:0 10px 24px #0f172a0f}.topics-page__topic-link strong{font-size:.97rem;line-height:1.3}.topics-page__topic-main{gap:2px;min-width:0;display:grid}.topics-page__topic-meta{color:var(--ink-500);font-size:.82rem;line-height:1.35}.topics-page__topic-chevron{color:var(--ink-400);flex:none;font-size:1.15rem;line-height:1}.topics-page__topic-link--skeleton{height:52px}.topics-page__tools-section{margin-top:36px}.topics-page__tools-header{margin-bottom:12px}.topic-page__scenario-list{gap:12px;margin:16px 0 0;padding:0;list-style:none;display:grid}.topic-page__scenario-list li{margin:0;padding:0}.topic-page__scenario-card{background:color-mix(in srgb,var(--paper)98%,#f8fbff);border:1px solid color-mix(in srgb,var(--border)82%,#dbe5f0);border-radius:16px;justify-content:space-between;align-items:center;gap:18px;width:100%;padding:16px 18px;transition:transform .18s,box-shadow .18s,border-color .18s,background-color .18s;display:flex;box-shadow:0 8px 24px #0f172a0a}.topic-page__scenario-card:hover{background:color-mix(in 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.topic-page__scenario-status{background:#22c55e2e}.topic-page__scenario-chevron{color:var(--ink-400);font-size:1.2rem;line-height:1}.topic-page__scenario-resume{background:linear-gradient(135deg,var(--brand-600),var(--brand-500));color:#fff;white-space:nowrap;box-shadow:0 8px 18px color-mix(in srgb,var(--brand-600)28%,transparent);border-radius:999px;flex:none;padding:8px 14px;font-size:.85rem;font-weight:700;line-height:1;text-decoration:none}.topic-page__scenario-resume:visited{color:#fff}.topic-page__scenario-resume:hover,.topic-page__scenario-resume:focus-visible,.topic-page__scenario-resume:active{background:linear-gradient(135deg,var(--brand-700),var(--brand-600));color:#eff6ff}.topic-page__scenario-resume:focus-visible{outline:2px solid color-mix(in srgb,var(--brand-300)68%,white);outline-offset:2px}.topic-page__scenario-chevron-link{color:inherit;justify-content:center;align-items:center;text-decoration:none;display:inline-flex}.topic-page__scenario-flashcard{border:1px solid var(--border);color:var(--ink-600);white-space:nowrap;background:0 0;border-radius:999px;flex:none;padding:6px 12px;font-size:.78rem;font-weight:600;line-height:1;text-decoration:none;transition:background .12s,color .12s,border-color .12s}.topic-page__scenario-flashcard:hover,.topic-page__scenario-flashcard:focus-visible{background:var(--brand-50);border-color:var(--brand-300);color:var(--brand-700);outline:none}.topic-page__flashcard-all-link{color:var(--brand-600);border:1px solid var(--brand-300);background:var(--brand-50);border-radius:999px;padding:5px 12px;font-size:.85rem;font-weight:600;text-decoration:none;transition:background .12s,color .12s}.topic-page__flashcard-all-link:hover{background:var(--brand-100);color:var(--brand-700)}.topic-page__scenario-list--loading .topic-page__scenario-card{pointer-events:none}.topics-page__tools-card{box-shadow:none;background:color-mix(in 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0 16px;font-size:clamp(2.4rem,4vw,3.4rem);line-height:1.1}.feature-hero__content h1 span{color:var(--ink-500);margin-top:12px;font-weight:500;display:block}.feature-kicker{text-transform:uppercase;letter-spacing:.24em;color:var(--ink-500);margin-bottom:16px;font-size:.75rem}.feature-subhead{color:var(--ink-700);max-width:520px;font-size:1.05rem}.feature-hero__visual{justify-content:center;display:flex}.feature-hero__image-frame{border:1px solid var(--border);box-shadow:var(--card-shadow);background:var(--paper);border-radius:24px;width:100%;max-width:520px;overflow:hidden}.feature-hero__image-frame img,.feature-hero__image{width:100%;height:auto;display:block}.feature-section{padding:40px 0}.feature-section--alt{background:var(--paper-muted);border-radius:28px;margin:0 -20px;padding:40px 20px}.feature-section__inner{grid-template-columns:repeat(auto-fit,minmax(260px,1fr));align-items:center;gap:28px;display:grid}.feature-section__copy h2{margin:16px 0 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112px);padding:18px;display:flex}.fc-session-rail__toggle{text-align:left;background:0 0;border:0;justify-content:space-between;align-items:center;gap:12px;width:100%;padding:0;display:flex}.fc-session-rail__label{letter-spacing:.08em;text-transform:uppercase;color:var(--muted-text);margin:0 0 12px;font-size:.78rem;font-weight:700}.fc-session-rail__toggle-icon{border:1px solid var(--border);background:var(--paper);width:28px;height:28px;color:var(--ink-900);border-radius:999px;justify-content:center;align-items:center;font-size:1rem;line-height:1;display:inline-flex}.fc-session-rail__list{overscroll-behavior:contain;gap:10px;margin-top:12px;padding-right:4px;display:grid;overflow-y:auto}.fc-session-rail__item{text-align:left;border:1px solid var(--border);background:var(--paper);border-radius:14px;gap:4px;width:100%;padding:12px 14px;transition:border-color .18s,background-color .18s,transform 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(max-width:980px){.fc-session-layout{grid-template-columns:1fr}.fc-session-rail{order:-1;position:static}}@media (max-width:520px){.fc-card{padding:20px 16px}.fc-card__rate-btns{grid-template-columns:repeat(2,1fr)}.guidelines-section-card{padding:20px}.guidelines-section-card__header{flex-direction:column}.guidelines-upload-form{flex-direction:column;align-items:stretch}.guidelines-doc-link{flex-direction:column;align-items:flex-start}.knowledge-hub-tool-card__icon{display:none}}@media (max-width:375px){.fc-card{padding:16px 12px}.fc-card__question{margin-bottom:18px;padding-bottom:16px;font-size:1.05rem}.fc-card__answer{margin-bottom:18px;padding:14px}.fc-card__rate-btns{gap:6px}.fc-rate-btn{padding:8px 4px;font-size:.8rem}.fc-complete{padding:28px 16px}.fc-complete__actions{flex-direction:column;gap:8px}.fc-complete__actions a,.fc-complete__actions button{width:100%}.fc-topic-picker__topic-link{gap:8px;padding:12px}.fc-topic-picker__topic-main{gap:6px}.fc-topic-badge{padding:2px 6px;font-size:.66rem}}body[data-theme=dark] .fc-rate-btn--again{color:#fca5a5;background:#450a0a}body[data-theme=dark] .fc-rate-btn--hard{color:#fdba74;background:#431407}body[data-theme=dark] .fc-rate-btn--good{color:#93c5fd;background:#1e3a5f}body[data-theme=dark] .fc-rate-btn--easy{color:#86efac;background:#052e16}body[data-theme=dark] .fc-topic-badge{color:#93c5fd;background:#1e3a5f}body[data-theme=dark] .fc-topic-badge--done{color:#86efac;background:#052e16}body[data-theme=dark] .fc-card__answer{background:var(--surface);border-color:var(--surface-border)}