.chapter_page__9V_KT{--ink:#1e3a5f;--deep:#13283f;--paper:#f6f8fb;--rule:#d8e0ea;--muted:#5b6b80;--hl:#facc15;--ok:#15803d;--ok-bg:#ecfdf3;--bad:#b42318;--bad-bg:#fef3f2;background:var(--paper);color:#1b2533;padding:96px 20px 64px}.chapter_wrap__UMotg{max-width:1120px;margin:0 auto}.chapter_crumbs__xXRPH{font-size:.875rem;color:var(--muted)}.chapter_crumbs__xXRPH ol{display:flex;flex-wrap:wrap;gap:6px;list-style:none;padding:0;margin:0}.chapter_crumbs__xXRPH li+li:before{content:"/";margin-right:6px;color:var(--rule)}.chapter_crumbs__xXRPH a{color:var(--ink);text-decoration:none}.chapter_crumbs__xXRPH a:hover{text-decoration:underline}.chapter_hero__vcbAa{margin-top:16px;display:grid;gap:20px;grid-template-columns:1fr;align-items:end}@media (min-width:900px){.chapter_hero__vcbAa{grid-template-columns:minmax(0,1fr) 300px}}.chapter_h1__uTh4X{font-size:clamp(2rem,4.6vw,3.25rem);line-height:1.08;letter-spacing:-.02em;font-weight:800;color:var(--deep);margin:0}.chapter_h1sub__n70pc{display:block;font-weight:500;color:var(--ink);font-size:.5em;letter-spacing:-.01em;margin-top:10px}.chapter_intro__CxlQO{margin-top:12px;max-width:62ch;font-size:.9375rem;line-height:1.55;color:#334155}.chapter_byline__BHs3P{margin-top:8px;font-size:.8125rem;color:var(--muted)}.chapter_byline__BHs3P a{color:var(--ink);font-weight:600}.chapter_heroActions__M4TGP{margin-top:16px;display:flex;flex-wrap:wrap;gap:8px}.chapter_facts__TrCy6{border:1.5px solid var(--ink);border-radius:6px;background:#fff}.chapter_facts__TrCy6 div{display:flex;justify-content:space-between;gap:12px;padding:12px 16px;border-top:1px dashed var(--rule);font-size:.9375rem}.chapter_facts__TrCy6 div:first-child{border-top:0}.chapter_facts__TrCy6 dt{color:var(--muted)}.chapter_facts__TrCy6 dd{margin:0;font-weight:700;color:var(--deep);text-align:right}.chapter_btnGhost__sl_Kc,.chapter_btnPrimary__duDM6,.chapter_ctaBtnDark__vjDi_,.chapter_ctaBtn__molQl{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:10px 16px;border-radius:10px;font-weight:700;text-decoration:none;font-size:.875rem;transition:background-color .15s,color .15s,transform .1s}.chapter_btnPrimary__duDM6{background:var(--hl);color:#1b2533;box-shadow:0 2px 8px #facc154d}.chapter_btnPrimary__duDM6:hover{background:#fde047;transform:translateY(-1px)}.chapter_btnPrimary__duDM6:active{transform:translateY(0)}.chapter_btnGhost__sl_Kc{border:1.5px solid var(--ink);color:var(--ink);background:#fff}.chapter_btnGhost__sl_Kc:hover{background:var(--ink);color:#fff}.chapter_ctaBtn__molQl{background:var(--hl);color:#1b2533;margin-top:14px}.chapter_ctaBtn__molQl:hover{background:#fde047}.chapter_ctaBtnDark__vjDi_{background:var(--ink);color:#fff;margin-top:12px}.chapter_sectionHead__grqM3{margin:32px 0 16px}.chapter_h2__YCDUy{font-size:1.625rem;font-weight:800;color:var(--deep);margin:0;letter-spacing:-.01em}.chapter_h2note___Mxlj{margin-top:6px;color:var(--muted);max-width:62ch}.chapter_topics__TFAqZ{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;margin-bottom:16px}.chapter_topics__TFAqZ span{border:1px solid var(--rule);background:#fff;border-radius:999px;padding:6px 12px;font-size:.875rem;color:var(--ink)}.chapter_quizGrid__1K0pe{display:grid;gap:24px;grid-template-columns:1fr}@media (min-width:900px){.chapter_quizGrid__1K0pe{grid-template-columns:200px minmax(0,1fr);align-items:start}}.chapter_scoreCard__h0x_U{background:var(--deep);color:#fff;border-radius:12px;padding:18px;display:grid;grid-template-columns:auto 1fr;gap:4px 14px;align-items:center}@media (min-width:900px){.chapter_scoreCard__h0x_U{position:sticky;top:96px;display:block}}.chapter_scoreBig__t_FXQ{font-size:2.5rem;font-weight:800;line-height:1;margin:0;font-variant-numeric:tabular-nums}.chapter_scoreBig__t_FXQ span{font-size:1.125rem;font-weight:600;opacity:.7}.chapter_scoreLabel__1JCHU{margin:0;font-size:.875rem;opacity:.8}.chapter_progress__Ck8my{grid-column:1/-1;height:6px;background:#ffffff2e;border-radius:99px;margin-top:12px;overflow:hidden}.chapter_progress__Ck8my div{height:100%;background:var(--hl);transition:width .3s ease}.chapter_scoreSmall__McYiI{grid-column:1/-1;margin:8px 0 0;font-size:.8125rem;opacity:.75}.chapter_resetBtn__Mbsa6{grid-column:1/-1;margin-top:12px;background:none;border:1px solid #ffffff59;color:#fff;border-radius:8px;padding:6px 10px;font-size:.8125rem;cursor:pointer}.chapter_questionList__CpdvB{list-style:none;padding:0;margin:0;display:grid;gap:16px}.chapter_question__hoZlN{background:#fff;border:1px solid var(--rule);border-radius:10px;padding:20px;scroll-margin-top:96px}.chapter_qMeta__LZflL{display:flex;align-items:center;gap:10px;margin:0 0 10px;font-size:.8125rem}.chapter_qNum__xz32R{font-weight:800;color:var(--ink);font-variant-numeric:tabular-nums}.chapter_qTopic__V503a{color:var(--muted)}.chapter_qText___Wyny{margin:0 0 14px;font-size:1.0625rem;line-height:1.55;font-weight:600;color:#1b2533;max-width:70ch}.chapter_options__9bFzy{display:grid;gap:8px}.chapter_option__AsHO4{display:flex;align-items:flex-start;gap:12px;width:100%;text-align:left;padding:10px 12px;border-radius:8px;border:1px solid #0000;background:#0000;font:inherit;color:inherit;cursor:pointer}.chapter_option__AsHO4:hover:not(:disabled){background:var(--paper);border-color:var(--rule)}.chapter_option__AsHO4:focus-visible{outline:3px solid var(--hl);outline-offset:2px}.chapter_option__AsHO4:disabled{cursor:default}.chapter_bubble__LHPek{flex:none;width:30px;height:30px;border-radius:50%;border:1.75px solid #8a9ab0;color:var(--muted);display:grid;place-items:center;font-size:.8125rem;font-weight:700;transition:background-color .2s ease,border-color .2s ease,color .2s ease}.chapter_optText__R2uuN{padding-top:4px;line-height:1.45}.chapter_option__AsHO4:hover:not(:disabled) .chapter_bubble__LHPek{border-color:var(--ink);color:var(--ink)}.chapter_correct__xYAr7{background:var(--ok-bg);border-color:#b7e4c7}.chapter_correct__xYAr7 .chapter_bubble__LHPek{background:var(--ok);border-color:var(--ok);color:#fff}.chapter_wrong__9fLxV{background:var(--bad-bg);border-color:#f4c7c3}.chapter_wrong__9fLxV .chapter_bubble__LHPek{background:var(--bad);border-color:var(--bad);color:#fff}.chapter_revealBtn__dRnTe{margin-top:10px;background:none;border:0;padding:4px 0;color:var(--ink);font-weight:600;font-size:.875rem;text-decoration:underline;text-underline-offset:3px;cursor:pointer}.chapter_explanation__trRL4{margin-top:14px;border-left:3px solid var(--ink);padding:4px 0 4px 14px;color:#334155;line-height:1.6;max-width:70ch}.chapter_explanation__trRL4 p{margin:0}.chapter_verdict__I7T9m{font-weight:800;color:var(--deep);margin-bottom:4px!important}.chapter_midCta__amewf{margin:20px 0;border:1.5px dashed var(--ink);border-radius:10px;padding:20px;background:#fffdf2}.chapter_midCta__amewf p{margin:0;color:#334155}.chapter_midCtaTitle__4EH_Y{font-weight:800;color:var(--deep)!important;font-size:1.0625rem;margin-bottom:4px!important}.chapter_elite__yWpyi{margin-top:16px;border-radius:10px;overflow:hidden;border:1.5px solid var(--deep);background:#fff}.chapter_eliteTag__kLq8H{margin:0;padding:10px 20px;background:var(--deep);color:var(--hl);font-weight:800;font-size:.875rem}.chapter_eliteText__Yqq6A{margin:0;padding:18px 20px 0;font-weight:600;filter:blur(4px);-webkit-user-select:none;user-select:none}.chapter_eliteLock__pd1QR{padding:16px 20px 20px}.chapter_eliteLock__pd1QR p{margin:0;color:#334155}.chapter_result__ArpfX{margin-top:20px;background:var(--ok-bg);border:1px solid #b7e4c7;border-radius:10px;padding:20px}.chapter_result__ArpfX p{margin:0}.chapter_resultScore__QPyKE{font-size:1.25rem;font-weight:800;color:var(--deep);margin-bottom:6px!important}.chapter_tableWrap__MXkBz{overflow-x:auto;border:1px solid var(--rule);border-radius:10px;background:#fff}.chapter_table__G8U4N{width:100%;border-collapse:collapse;font-size:.9375rem}.chapter_table__G8U4N th{text-align:left;background:var(--deep);color:#fff;padding:10px 14px;font-weight:700}.chapter_table__G8U4N td{padding:10px 14px;border-top:1px solid var(--rule);vertical-align:top}.chapter_table__G8U4N td:first-child{color:var(--deep);font-weight:700;width:42%}.chapter_table__G8U4N tr:nth-child(2n) td{background:#fafbfd}.chapter_topicTable__WDch5{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--rule);border-radius:10px;overflow:hidden;font-size:.9375rem}.chapter_topicTable__WDch5 td{padding:10px 14px;border-top:1px solid var(--rule)}.chapter_topicTable__WDch5 tr:first-child td{border-top:0}.chapter_topicTable__WDch5 td:last-child{text-align:right;font-weight:700;color:var(--ink);font-variant-numeric:tabular-nums}.chapter_faq__n4R6_{display:grid;gap:10px}.chapter_faq__n4R6_ details{background:#fff;border:1px solid var(--rule);border-radius:10px;padding:16px 18px}.chapter_faq__n4R6_ summary{font-weight:700;color:var(--deep);cursor:pointer}.chapter_faq__n4R6_ p{margin:10px 0 0;color:#334155;line-height:1.6;max-width:70ch}.chapter_srOnly__EcvkA{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}@media (prefers-reduced-motion:reduce){.chapter_bubble__LHPek,.chapter_progress__Ck8my div{transition:none}}.chapter_pager__qmQid{margin-top:56px;display:grid;gap:12px;grid-template-columns:1fr}@media (min-width:700px){.chapter_pager__qmQid{grid-template-columns:1fr 1fr}}.chapter_pagerLink__KDbbi{display:block;background:#fff;border:1px solid var(--rule);border-radius:10px;padding:16px 18px;text-decoration:none;color:var(--deep)}.chapter_pagerLink__KDbbi:hover{border-color:var(--ink)}.chapter_pagerLink__KDbbi span{display:block;font-size:.8125rem;color:var(--muted);margin-bottom:4px}.chapter_pagerLink__KDbbi strong{font-size:1.0625rem}.chapter_pagerNext__kgKW_{text-align:right}.chapter_related__75lWi{list-style:none;padding:0;margin:0;display:grid;gap:8px;grid-template-columns:1fr}@media (min-width:700px){.chapter_related__75lWi{grid-template-columns:1fr 1fr}}.chapter_related__75lWi li{display:flex;justify-content:space-between;gap:12px;background:#fff;border:1px solid var(--rule);border-radius:10px;padding:12px 16px}.chapter_related__75lWi a{color:var(--deep);font-weight:700;text-decoration:none}.chapter_related__75lWi a:hover{text-decoration:underline}.chapter_related__75lWi span{color:var(--muted);font-size:.875rem;white-space:nowrap}.chapter_allLink__Rp12S{color:var(--ink);font-weight:700}.chapter_resultActions__Cneta{display:flex;flex-wrap:wrap;gap:10px;align-items:center}.chapter_shareBtn__gUai3{display:inline-flex;align-items:center;margin-top:14px;padding:12px 20px;border-radius:10px;font-weight:700;text-decoration:none;background:#25d366;color:#0b2e17}.chapter_shareBtn__gUai3:hover{background:#3ee07a}.chapter_modeToggle__HMDgG{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-bottom:16px}.chapter_modeBtn__hNOWS{display:flex;align-items:center;justify-content:center;gap:6px;padding:10px;border-radius:8px;border:1.5px solid var(--rule);background:#fff;color:var(--muted);font-size:.9375rem;font-weight:600;cursor:pointer;transition:border-color .15s,color .15s,background .15s}.chapter_modeBtnActive__rT4yV,.chapter_modeBtn__hNOWS:hover{border-color:var(--ink);color:var(--ink)}.chapter_modeBtnActive__rT4yV{background:var(--paper)}.chapter_stickyProgress__UTwOT{position:sticky;top:72px;z-index:10;background:#fff;border:1px solid var(--rule);border-radius:10px;padding:10px 14px;margin-bottom:16px;box-shadow:0 1px 4px #0000000a}.chapter_stickyProgressInfo__t7QW_{display:flex;align-items:center;gap:10px;margin-top:6px;font-size:.8125rem;color:var(--muted)}.chapter_stickyCorrect__WBF99{color:var(--ok);font-weight:700}.chapter_stickyReset__sNIWi{margin-left:auto;background:none;border:0;color:var(--ink);font-weight:600;cursor:pointer;font-size:.8125rem;text-decoration:underline;text-underline-offset:3px}.chapter_topicChip__M0IXJ{border:1px solid var(--rule);background:#fff;border-radius:999px;padding:6px 14px;font-size:.875rem;color:var(--ink);cursor:pointer;white-space:nowrap;transition:all .15s}.chapter_topicChip__M0IXJ:hover{border-color:var(--ink);background:var(--paper)}.chapter_topicChipActive__XCArs{background:var(--ink);border-color:var(--ink);color:#fff;font-weight:700}.chapter_testMode__BuPfZ{max-width:700px;margin:0 auto}.chapter_testBar__pJPP9{display:flex;align-items:center;gap:12px;margin-bottom:16px}.chapter_testExit__2VR29{background:#fff;border:1.5px solid var(--rule);border-radius:8px;width:36px;height:36px;display:flex;align-items:center;justify-content:center;cursor:pointer;font-size:1rem;color:var(--muted)}.chapter_testExit__2VR29:hover{border-color:var(--ink);color:var(--ink)}.chapter_testTimer__2Y02y{font-size:.9375rem;font-weight:700;color:var(--deep);font-variant-numeric:tabular-nums;min-width:44px}.chapter_testNav__gO1Qs{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:16px}.chapter_testCount__GZ89D{font-size:.875rem;color:var(--muted);font-weight:600}.chapter_btnDisabled__0iZj_{opacity:.4;cursor:default;pointer-events:none}.chapter_testResult__5xKIB{text-align:center;padding:40px 20px}.chapter_testScoreCircle__RGswa{width:120px;height:120px;border-radius:50%;border:6px solid var(--ink);display:flex;flex-direction:column;align-items:center;justify-content:center;margin:0 auto 16px}.chapter_testScoreNum__uufwI{font-size:1.75rem;font-weight:800;color:var(--deep)}.chapter_testScorePct__lkSzc{font-size:.875rem;color:var(--muted)}.chapter_testTime__0D2Ur{margin:0 0 8px;font-size:.9375rem;color:var(--muted)}.chapter_testMsg__Zwkzy{color:#334155;max-width:40ch;margin:0 auto 24px}.chapter_testResultActions__V_kJ6{display:flex;flex-wrap:wrap;gap:10px;justify-content:center}