._surface_13a34_3{--ink:#061a33;--muted:#63748d;--line:#dbe7f4;--surface:#fff;--soft:#f3f8fe;--navy:#020b17;--navy2:#071d38;--blue:#0b78ff;--accent:#43d3ff;--accent2:#0b7cff;--shadow:0 24px 70px #08264a1f;--shadow-sm:0 12px 34px #08264a17;--radius:24px;--radius-sm:16px;--max:1380px}._surface_13a34_3 *{box-sizing:border-box}._surface_13a34_3{scroll-behavior:smooth;color:var(--ink);-webkit-font-smoothing:antialiased;background:#f8fbff;margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;line-height:1.55}._surface_13a34_3 a{color:inherit;text-decoration:none}._surface_13a34_3 button,._surface_13a34_3 input,._surface_13a34_3 select{font:inherit}._surface_13a34_3 button{cursor:pointer}._container_13a34_10{width:min(var(--max),calc(100% - 48px));margin-inline:auto}._topbar_13a34_11{-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);z-index:50;background:#fffffff0;border-bottom:1px solid #0e335817;align-items:center;height:76px;display:flex;position:sticky;top:0}._nav_13a34_12{justify-content:space-between;align-items:center;gap:28px;width:100%;display:flex}._brand_13a34_12{letter-spacing:-.04em;align-items:center;gap:12px;font-size:24px;font-weight:900;display:flex}._brand-mark_13a34_12{background:linear-gradient(135deg,var(--blue),var(--accent));color:#fff;border-radius:12px;place-items:center;width:38px;height:38px;font-weight:900;display:grid;box-shadow:0 8px 22px #0b78ff47}._brand_13a34_12 small{letter-spacing:.32em;color:#7b8ca1;margin-top:-3px;font-size:8px;font-weight:800;display:block}._navlinks_13a34_12{align-items:center;gap:26px;font-size:14px;font-weight:650;display:flex}._navlinks_13a34_12 a{color:#263a54}._navlinks_13a34_12 a._active_13a34_12{color:var(--blue)}._nav-actions_13a34_12{align-items:center;gap:10px;display:flex}._btn_13a34_12{border:1px solid #0000;border-radius:12px;justify-content:center;align-items:center;gap:10px;padding:12px 18px;font-weight:800;transition:all .2s;display:inline-flex}._btn_13a34_12:hover{transform:translateY(-2px)}._btn-primary_13a34_12{background:linear-gradient(135deg,var(--blue),#1266ed);color:#fff;box-shadow:0 10px 24px #0b78ff42}._btn-secondary_13a34_12{background:#fff;border-color:#b8c9db}._btn-dark_13a34_12{color:#fff;background:#ffffff12;border-color:#ffffff3d}._icon-btn_13a34_12{border:1px solid var(--line);background:#fff;border-radius:12px;place-items:center;width:44px;height:44px;display:grid}._menu-btn_13a34_12{display:none}._hero_13a34_13{background:radial-gradient(circle at 77% 42%,color-mix(in srgb,var(--accent) 24%,transparent),transparent 34%),linear-gradient(125deg,#020a15 0%,#06152a 48%,#082744 100%);color:#fff;min-height:520px;position:relative;overflow:hidden}._hero_13a34_13:before{content:"";background-image:linear-gradient(#ffffff09 1px,#0000 1px),linear-gradient(90deg,#ffffff09 1px,#0000 1px);background-size:52px 52px;position:absolute;inset:0;-webkit-mask-image:linear-gradient(90deg,#0000 5%,#000 48% 92%,#0000);mask-image:linear-gradient(90deg,#0000 5%,#000 48% 92%,#0000)}._hero_13a34_13:after{content:"";border:1px solid color-mix(in srgb,var(--accent) 28%,transparent);width:620px;height:620px;box-shadow:0 0 90px color-mix(in srgb,var(--accent) 14%,transparent);border-radius:50%;position:absolute;top:-270px;right:-260px}._hero-inner_13a34_13{z-index:2;grid-template-columns:minmax(0,1.02fr) minmax(520px,.98fr);align-items:center;gap:60px;padding:62px 0 76px;display:grid;position:relative}._crumbs_13a34_13{color:#9db2c9;align-items:center;gap:10px;margin-bottom:22px;font-size:13px;display:flex}._eyebrow_13a34_13{letter-spacing:.22em;text-transform:uppercase;color:var(--accent);margin-bottom:12px;font-size:12px;font-weight:850}._hero_13a34_13 h1{letter-spacing:-.064em;max-width:850px;margin:0 0 22px;font-size:clamp(52px,6.2vw,94px);line-height:.94}._hero_13a34_13 h1 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42%);position:absolute;inset:0}._hero-formula_13a34_13{-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);text-align:right;z-index:2;background:#020b178c;border:1px solid #ffffff24;border-radius:16px;padding:12px 16px;position:absolute;top:20px;right:24px}._hero-formula_13a34_13 small{color:#8fa5bc;text-transform:uppercase;letter-spacing:.16em;font-size:9px;font-weight:800;display:block}._hero-formula_13a34_13 strong{color:#fff;font-family:Georgia,serif;font-size:24px}._art-caption_13a34_13{z-index:2;position:absolute;bottom:22px;left:24px}._art-caption_13a34_13 small{color:#8ea9c5;letter-spacing:.16em;text-transform:uppercase;font-size:9px;font-weight:800;display:block}._art-caption_13a34_13 strong{font-size:20px}._hero-art_13a34_13 svg{z-index:1;width:100%;height:100%;position:relative}._quickbar_13a34_14{z-index:5;margin-top:-38px;position:relative}._quickbar-grid_13a34_14{border:1px solid var(--line);box-shadow:var(--shadow);background:#fff;border-radius:20px;grid-template-columns:repeat(4,1fr);display:grid;overflow:hidden}._quickstat_13a34_14{border-right:1px solid var(--line);align-items:center;gap:16px;padding:23px 26px;display:flex}._quickstat_13a34_14:last-child{border-right:0}._quick-icon_13a34_14{background:color-mix(in srgb,var(--accent) 12%,white);width:46px;height:46px;color:color-mix(in srgb,var(--accent) 78%,#04355e);border-radius:14px;place-items:center;font-size:22px;font-weight:900;display:grid}._quickstat_13a34_14 strong{font-size:16px;display:block}._quickstat_13a34_14 span{color:var(--muted);margin-top:2px;font-size:12px;display:block}._main_13a34_15{padding:68px 0 90px}._page-grid_13a34_15{grid-template-columns:minmax(0,1fr) 330px;gap:30px;display:grid}._section_13a34_15{margin-bottom:54px}._section-head_13a34_15{justify-content:space-between;align-items:end;gap:20px;margin-bottom:22px;display:flex}._section-kicker_13a34_15{text-transform:uppercase;letter-spacing:.18em;color:var(--blue);margin-bottom:6px;font-size:11px;font-weight:850}._section_13a34_15 h2{letter-spacing:-.04em;margin:0;font-size:34px;line-height:1.1}._section-head_13a34_15 p{color:var(--muted);max-width:720px;margin:8px 0 0}._view-link_13a34_15{color:var(--blue);white-space:nowrap;font-size:13px;font-weight:800}._path-strip_13a34_16{scrollbar-width:thin;align-items:center;gap:10px;padding:3px 2px 14px;display:flex;overflow:auto}._path-dot_13a34_16{border:2px solid color-mix(in srgb,var(--accent) 45%,#d8e4f1);background:#fff;border-radius:50%;flex:none;place-items:center;width:34px;height:34px;font-size:12px;font-weight:850;display:grid}._path-line_13a34_16{background:linear-gradient(90deg,color-mix(in srgb,var(--accent) 70%,#dbe7f4),#dbe7f4);flex:1;min-width:30px;height:2px}._lesson-toolbar_13a34_16{justify-content:space-between;align-items:center;gap:14px;margin-bottom:16px;display:flex}._segmented_13a34_16{border:1px solid var(--line);box-shadow:var(--shadow-sm);background:#fff;border-radius:14px;gap:6px;padding:5px;display:flex}._segmented_13a34_16 button{color:#566982;background:0 0;border:0;border-radius:10px;padding:8px 13px;font-size:12px;font-weight:800}._segmented_13a34_16 button._active_13a34_12{background:var(--ink);color:#fff}._lesson-search_13a34_16{border:1px solid var(--line);width:250px;color:var(--ink);background:#fff;border-radius:12px;padding:11px 13px}._lesson-grid_13a34_16{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;display:grid}._lesson-card_13a34_16{border:1px solid var(--line);background:#fff;border-radius:18px;min-height:190px;padding:22px;transition:all .22s;position:relative;overflow:hidden;box-shadow:0 9px 28px #0a2f570e}._lesson-card_13a34_16:before{content:"";background:linear-gradient(var(--accent),var(--accent2));opacity:.8;width:4px;position:absolute;top:0;bottom:0;left:0}._lesson-card_13a34_16:hover{box-shadow:var(--shadow-sm);border-color:color-mix(in srgb,var(--accent) 38%,var(--line));transform:translateY(-4px)}._lesson-top_13a34_16{justify-content:space-between;align-items:flex-start;gap:12px;display:flex}._lesson-no_13a34_16{color:var(--blue);font-size:12px;font-weight:900}._formula_13a34_16{color:color-mix(in srgb,var(--accent2) 70%,var(--ink));background:var(--soft);text-align:right;border-radius:10px;max-width:58%;padding:5px 9px;font-family:Georgia,Times New Roman,serif;font-size:17px}._lesson-card_13a34_16 h3{letter-spacing:-.025em;margin:20px 0 8px;font-size:19px;line-height:1.22}._lesson-card_13a34_16 p{color:var(--muted);margin:0 0 18px;font-size:13px}._lesson-meta_13a34_16{justify-content:space-between;align-items:center;gap:10px;margin-top:auto;display:flex}._level_13a34_16{text-transform:uppercase;letter-spacing:.12em;color:#6b7c92;font-size:10px;font-weight:850}._round-arrow_13a34_16{border:1px solid var(--line);width:32px;height:32px;color:var(--blue);border-radius:50%;place-items:center;font-weight:900;display:grid}._empty-state_13a34_16{text-align:center;color:var(--muted);background:#fff;border:1px dashed #b8cadd;border-radius:18px;grid-column:1/-1;padding:40px}._lab-panel_13a34_17{color:#fff;box-shadow:var(--shadow);background:linear-gradient(130deg,#031226,#082c50);border-radius:24px;overflow:hidden}._lab-grid_13a34_17{grid-template-columns:360px 1fr;display:grid}._lab-controls_13a34_17{border-right:1px solid #ffffff1f;padding:30px}._lab-badge_13a34_17{border:1px solid color-mix(in srgb,var(--accent) 45%,transparent);color:var(--accent);background:color-mix(in srgb,var(--accent) 9%,transparent);letter-spacing:.13em;text-transform:uppercase;border-radius:999px;padding:6px 10px;font-size:10px;font-weight:900;display:inline-flex}._lab-controls_13a34_17 h3{margin:16px 0 8px;font-size:27px;line-height:1.1}._lab-equation_13a34_17{color:var(--accent);margin-bottom:24px;font-family:Georgia,serif;font-size:24px}._slider-row_13a34_17{margin:19px 0}._slider-label_13a34_17{color:#a9bfd4;justify-content:space-between;gap:10px;margin-bottom:8px;font-size:12px;display:flex}._slider-label_13a34_17 strong{color:#fff}._slider-row_13a34_17 input{width:100%;accent-color:var(--accent)}._lab-result_13a34_17{border-top:1px solid #ffffff1f;margin-top:24px;padding-top:20px}._lab-result_13a34_17 small{color:#87a2ba;text-transform:uppercase;letter-spacing:.15em;font-size:9px;font-weight:900;display:block}._lab-result_13a34_17 strong{letter-spacing:-.05em;color:#fff;margin-top:4px;font-size:42px;display:block}._lab-note_13a34_17{color:#839eb7;margin-top:8px;font-size:11px}._lab-chart_13a34_17{min-height:370px;padding:26px;position:relative}._lab-chart-head_13a34_17{justify-content:space-between;align-items:center;gap:14px;margin-bottom:10px;display:flex}._lab-chart-head_13a34_17 strong{font-size:13px}._lab-chart-head_13a34_17 span{color:#88a2bc;text-transform:uppercase;letter-spacing:.13em;font-size:10px}._lab-chart_13a34_17 svg{width:100%;height:300px}._chart-grid_13a34_17 line{stroke:#ffffff14}._chart-axis_13a34_17{stroke:#ffffff3d}._chart-path_13a34_17{fill:none;stroke:var(--accent);stroke-width:4px;filter:drop-shadow(0 0 8px color-mix(in srgb,var(--accent) 70%,transparent))}._chart-area_13a34_17{fill:url(#areaFill);opacity:.42}._chart-dot_13a34_17{fill:#fff;stroke:var(--accent);stroke-width:5px}._chart-label_13a34_17{fill:#8ea7be;font-size:10px}._resource-grid_13a34_18{grid-template-columns:repeat(4,1fr);gap:14px;display:grid}._resource-card_13a34_18{border:1px solid var(--line);background:#fff;border-radius:18px;min-height:170px;padding:20px;box-shadow:0 8px 24px #0a2f570d}._resource-card_13a34_18 ._ri_13a34_18{background:color-mix(in srgb,var(--accent) 12%,white);width:42px;height:42px;color:color-mix(in srgb,var(--accent) 75%,var(--ink));border-radius:13px;place-items:center;margin-bottom:17px;font-size:20px;font-weight:900;display:grid}._resource-card_13a34_18 h3{margin:0 0 7px;font-size:16px}._resource-card_13a34_18 p{color:var(--muted);margin:0 0 12px;font-size:12px}._resource-card_13a34_18 a{color:var(--blue);font-size:12px;font-weight:850}._game-card_13a34_18{color:#fff;background:linear-gradient(135deg,#031227,#0a2d50);border-color:#ffffff14;grid-column:span 2;position:relative;overflow:hidden}._game-card_13a34_18:after{content:"";border:1px solid color-mix(in srgb,var(--accent) 50%,transparent);width:190px;height:190px;box-shadow:0 0 60px color-mix(in srgb,var(--accent) 24%,transparent);border-radius:50%;position:absolute;bottom:-90px;right:-60px}._game-card_13a34_18 p{color:#a9bfd4}._game-card_13a34_18 a{color:var(--accent)}._sidebar_13a34_19{position:relative}._sticky_13a34_19{gap:16px;display:grid;position:sticky;top:100px}._side-card_13a34_19{border:1px solid var(--line);background:#fff;border-radius:18px;padding:20px;box-shadow:0 9px 28px #0a2f570e}._side-card_13a34_19 h3{margin:0 0 14px;font-size:17px}._side-card_13a34_19 p{color:var(--muted);margin:0;font-size:12px}._chapter-select_13a34_19{border:1px solid var(--line);width:100%;color:var(--ink);background:#fff;border-radius:11px;padding:11px 12px;font-weight:700}._formula-list_13a34_19{gap:9px;display:grid}._formula-item_13a34_19{border-top:1px solid var(--line);padding-top:10px}._formula-item_13a34_19:first-child{border-top:0;padding-top:0}._formula-item_13a34_19 small{color:var(--muted);font-size:10px;display:block}._formula-item_13a34_19 strong{color:var(--ink);margin-top:2px;font-family:Georgia,serif;font-size:16px;display:block}._outcome-list_13a34_19{gap:10px;display:grid}._outcome_13a34_19{color:#41556e;align-items:flex-start;gap:10px;font-size:12px;display:flex}._check_13a34_19{background:color-mix(in srgb,var(--accent) 14%,white);width:20px;height:20px;color:color-mix(in srgb,var(--accent) 75%,var(--ink));border-radius:50%;flex:none;place-items:center;font-size:11px;font-weight:900;display:grid}._side-cta_13a34_19{background:linear-gradient(145deg,color-mix(in srgb,var(--accent) 13%,white),#fff)}._side-cta_13a34_19 ._btn_13a34_12{width:100%;margin-top:15px}._chapter-nav_13a34_20{grid-template-columns:1fr 1fr;gap:16px;display:grid}._chapter-jump_13a34_20{border:1px solid var(--line);background:#fff;border-radius:18px;justify-content:space-between;align-items:center;gap:18px;padding:20px;display:flex;box-shadow:0 9px 28px #0a2f570d}._chapter-jump_13a34_20._next_13a34_20{text-align:right}._chapter-jump_13a34_20 small{color:var(--muted);text-transform:uppercase;letter-spacing:.12em;font-size:10px;font-weight:850;display:block}._chapter-jump_13a34_20 strong{margin-top:4px;display:block}._chapter-jump_13a34_20 ._round-arrow_13a34_16{flex:none;width:42px;height:42px}._footer_13a34_21{color:#d9e6f2;background:#031124;padding:58px 0 22px}._footer-grid_13a34_21{grid-template-columns:1.35fr repeat(3,1fr) 1.4fr;gap:36px;display:grid}._footer_13a34_21 h4{color:#fff;margin:0 0 14px}._footer_13a34_21 p,._footer_13a34_21 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.2s;display:flex}._drawer-item_13a34_22:hover{border-color:var(--blue);transform:translateY(-1px)}._drawer-no_13a34_22{background:var(--soft);width:30px;height:30px;color:var(--blue);border-radius:10px;place-items:center;font-size:11px;font-weight:900;display:grid}._drawer-item_13a34_22 strong{font-size:12px;line-height:1.2}._drawer-item_13a34_22 small{color:var(--muted);margin-top:2px;font-size:9px;display:block}._toast_13a34_23{opacity:0;z-index:120;color:#fff;box-shadow:var(--shadow);background:#061a33;border-radius:12px;padding:11px 16px;font-size:12px;transition:all .25s;position:fixed;bottom:26px;left:50%;transform:translate(-50%,20px)}._toast_13a34_23._show_13a34_23{opacity:1;transform:translate(-50%)}@media (width<=1100px){._navlinks_13a34_12{display:none}._menu-btn_13a34_12{display:grid}._hero-inner_13a34_13{grid-template-columns:1fr}._hero-art_13a34_13{max-width:760px}._quickbar-grid_13a34_14{grid-template-columns:1fr 1fr}._quickstat_13a34_14:nth-child(2){border-right:0}._quickstat_13a34_14:nth-child(-n+2){border-bottom:1px solid var(--line)}._page-grid_13a34_15{grid-template-columns:minmax(0,1fr)}._sticky_13a34_19{grid-template-columns:repeat(2,1fr);position:static}._lab-grid_13a34_17{grid-template-columns:320px 1fr}._resource-grid_13a34_18{grid-template-columns:repeat(2,1fr)}._footer-grid_13a34_21{grid-template-columns:1.3fr 1fr 1fr}._footer-grid_13a34_21>div:nth-child(4),._footer-grid_13a34_21>div:nth-child(5){margin-top:10px}}@media (width<=720px){._container_13a34_10{width:min(100% - 28px,var(--max))}._topbar_13a34_11{height:68px}._brand_13a34_12{font-size:20px}._brand-mark_13a34_12{width:34px;height:34px}._nav-actions_13a34_12 ._btn-secondary_13a34_12{display:none}._hero-inner_13a34_13{gap:28px;padding:44px 0 66px}._hero_13a34_13 h1{font-size:52px}._hero_13a34_13 p{font-size:15px}._hero-art_13a34_13{min-height:300px}._art-shell_13a34_13{height:330px}._quickbar_13a34_14{margin-top:-24px}._quickbar-grid_13a34_14{grid-template-columns:1fr}._quickstat_13a34_14{border-right:0;border-bottom:1px solid var(--line)!important}._quickstat_13a34_14:last-child{border-bottom:0!important}._main_13a34_15{padding-top:54px}._section_13a34_15 h2{font-size:29px}._lesson-toolbar_13a34_16{flex-direction:column;align-items:stretch}._segmented_13a34_16{overflow:auto}._lesson-search_13a34_16{width:100%}._lesson-grid_13a34_16,._lab-grid_13a34_17{grid-template-columns:1fr}._lab-controls_13a34_17{border-bottom:1px solid #ffffff1f;border-right:0}._lab-chart_13a34_17{min-height:310px}._resource-grid_13a34_18{grid-template-columns:1fr}._game-card_13a34_18{grid-column:auto}._sticky_13a34_19,._chapter-nav_13a34_20{grid-template-columns:1fr}._footer-grid_13a34_21{grid-template-columns:1fr 1fr}._footer-grid_13a34_21>div:first-child,._footer-grid_13a34_21>div:last-child{grid-column:1/-1}._drawer-list_13a34_22{grid-template-columns:1fr}._hero-formula_13a34_13{top:14px;right:14px}._art-caption_13a34_13{bottom:16px;left:16px}}@media (prefers-reduced-motion:reduce){._surface_13a34_3 *{scroll-behavior:auto!important;transition:none!important}._btn_13a34_12:hover,._lesson-card_13a34_16:hover,._drawer-item_13a34_22:hover{transform:none}}.page-shell.site-theme:has(._surface_13a34_3)>.site-main{width:100%;padding-top:0}._surface_13a34_3 ._hero_13a34_13 h1{letter-spacing:-.064em;color:#fff;overflow-wrap:anywhere;font-size:clamp(52px,6.2vw,94px);font-weight:850;line-height:.98}._surface_13a34_3 ._hero_13a34_13 ._eyebrow_13a34_13{color:var(--accent);letter-spacing:.22em;margin:0 0 12px;font-size:12px;line-height:1.5}._surface_13a34_3 ._hero_13a34_13 ._chapter-word_13a34_13{color:var(--accent);letter-spacing:.02em;text-transform:uppercase;margin:0 0 14px;font-size:30px;font-weight:850;line-height:1.2;display:block}._surface_13a34_3 ._hero_13a34_13 ._hero-inner_13a34_13{grid-template-columns:minmax(0,1.02fr) minmax(0,.98fr)}._illustration_13a34_33{object-fit:contain;z-index:1;width:100%;height:100%;display:block;position:relative}._surface_13a34_3 ._hero_13a34_13 a{color:#fff}._surface_13a34_3 ._hero_13a34_13 ._crumbs_13a34_13 a{color:#9db2c9}._surface_13a34_3 ._hero_13a34_13 ._hero-art_13a34_13{min-width:0}._surface_13a34_3 ._art-caption_13a34_13{max-width:calc(100% - 48px)}._surface_13a34_3 ._art-caption_13a34_13 strong{font-size:16px}._surface_13a34_3 ._hero_13a34_13 ._btn_13a34_12{font-size:14px}._surface_13a34_3 :is(h2,h3,p){text-transform:none}._surface_13a34_3 a:focus-visible,._surface_13a34_3 button:focus-visible,._surface_13a34_3 input:focus-visible,._surface_13a34_3 select:focus-visible,._surface_13a34_3 summary:focus-visible{outline:3px solid var(--blue);outline-offset:4px}._surface_13a34_3 ._hero_13a34_13 :focus-visible{outline-color:var(--accent)}@media (width<=1100px){._surface_13a34_3 ._hero_13a34_13 ._hero-inner_13a34_13{grid-template-columns:minmax(0,1fr)}}@media (width<=720px){._surface_13a34_3 ._hero_13a34_13 h1{font-size:52px}._surface_13a34_3 ._hero_13a34_13 ._chapter-word_13a34_13{font-size:24px}}._surface_13a34_3{isolation:isolate}._surface_13a34_3 :is(section,aside,nav,div){min-width:0}._surface_13a34_3 ._section_13a34_15 h2{color:var(--ink);font-weight:700}._surface_13a34_3 ._lesson-card_13a34_16 h3{color:var(--ink);font-weight:800}._surface_13a34_3 ._lesson-card_13a34_16{color:var(--ink);display:block}._surface_13a34_3 ._lesson-card_13a34_16:hover{border-color:var(--accent2)}._surface_13a34_3 ._view-link_13a34_15{text-transform:none;letter-spacing:0;box-shadow:none;background:0 0;border:0;border-radius:0;padding:8px 0;font-size:13px}._contentColumn_13a34_55{min-width:0}._pathStep_13a34_56{flex:1;align-items:center;gap:10px;display:flex;min-width:60px!important}._pathStep_13a34_56:last-child{flex:0;min-width:34px!important}._pathStep_13a34_56 ._path-line_13a34_16{min-width:12px}._surface_13a34_3 ._segmented_13a34_16 button{box-shadow:none;text-transform:none;letter-spacing:0;transform:none}._resultsRow_13a34_60{color:var(--muted);justify-content:space-between;align-items:center;gap:12px;margin-bottom:16px;font-size:12px;display:flex}._resultsRow_13a34_60 p{margin:0}._resultsRow_13a34_60 label{align-items:center;gap:8px;display:flex}._resultsRow_13a34_60 select{border:1px solid var(--line);color:var(--ink);background:#fff;border-radius:8px;max-width:150px;padding:7px 10px}._scopeNote_13a34_63{color:#41556e;background:#eaf3ff;border-radius:10px;padding:12px 14px;font-size:12px}._mapped_13a34_64{color:#0059be;background:#eaf3ff;border-radius:6px;margin-top:12px;padding:4px 8px;font-size:10px;font-weight:750;display:inline-flex}._emptyState_13a34_65{border:1px dashed var(--line);background:#fff;border-radius:18px;padding:28px}._emptyState_13a34_65 p{color:var(--muted)}._surface_13a34_3 ._lab-grid_13a34_17{grid-template-columns:minmax(250px,.85fr) minmax(0,1.15fr)}._surface_13a34_3 ._lab-panel_13a34_17 h3{color:#fff;margin:14px 0;font-size:24px;line-height:1.2}._surface_13a34_3 ._lab-equation_13a34_17{color:var(--accent);overflow-wrap:anywhere}._surface_13a34_3 ._lab-chart_13a34_17{min-width:0;padding:24px 14px}._surface_13a34_3 ._lab-chart_13a34_17 svg{width:100%;height:auto;display:block;overflow:visible}._surface_13a34_3 ._lab-chart-head_13a34_17{flex-direction:column;align-items:flex-start;gap:5px;padding-inline:8px}._surface_13a34_3 ._chart-path_13a34_17{fill:none;stroke:var(--accent);stroke-width:4px}._surface_13a34_3 ._chart-label_13a34_17{fill:#adc2d7;font-size:12px}._surface_13a34_3 ._lab-note_13a34_17{color:#b8cde0;margin:12px 0 0;font-size:12px;line-height:1.65}._labOutput_13a34_72{color:#fff;overflow-wrap:anywhere;margin-top:8px;font-size:32px;font-weight:850;line-height:1.2;display:block}._surface_13a34_3 ._resource-card_13a34_18{color:var(--ink);transition:border-color .2s;display:block}._surface_13a34_3 ._resource-card_13a34_18:hover{border-color:var(--accent2)}._surface_13a34_3 ._resource-card_13a34_18 h3{font-weight:800}._surface_13a34_3 ._resource-card_13a34_18 small{color:#4e6682;margin-bottom:7px;font-size:10px;line-height:1.5;display:block}._surface_13a34_3 ._game-card_13a34_18,._surface_13a34_3 ._game-card_13a34_18 h3{color:#fff}._surface_13a34_3 ._game-card_13a34_18 ._resourceAction_13a34_75{color:var(--accent)}._resourceAction_13a34_75{color:#005dcf;font-size:12px;font-weight:850}._surface_13a34_3 ._resource-card_13a34_18 ._ri_13a34_18{font-style:normal}._relatedLinks_13a34_77{color:#005dcf;flex-wrap:wrap;gap:12px 20px;margin-top:22px;font-size:12px;font-weight:750;display:flex}._detailPanel_13a34_78{border:1px solid var(--line);color:#41556e;overflow-wrap:anywhere;background:#fff;border-radius:18px;margin:0 0 28px;padding:20px;font-size:14px}._detailPanel_13a34_78 summary{cursor:pointer;color:var(--ink);justify-content:space-between;align-items:center;gap:16px;font-weight:800;display:flex}._detailPanel_13a34_78 summary span{color:var(--muted);font-size:11px}._detailPanel_13a34_78 h2{color:var(--ink);margin:0 0 20px;line-height:1.2;font-size:26px!important}._detailPanel_13a34_78 a{color:#005dcf}._detailPanel_13a34_78 p,._detailPanel_13a34_78 ul{margin-top:14px}._reviewLinks_13a34_82{gap:12px;padding-top:18px;display:grid}._surface_13a34_3 ._sticky_13a34_19{scrollbar-width:thin;max-height:calc(100dvh - 116px);padding:2px 6px 10px 2px;top:100px;overflow-y:auto}._surface_13a34_3 ._side-card_13a34_19 h3{color:var(--ink);font-weight:800}._surface_13a34_3 ._side-card_13a34_19 h3 label{font:inherit}._browseButton_13a34_85{color:#005dcf;box-shadow:none;text-transform:none;letter-spacing:0;background:0 0;border:0;padding:12px 0 0;font-size:12px;font-weight:750}._prerequisites_13a34_86{flex-wrap:wrap;gap:6px;display:flex}._prerequisites_13a34_86>*{background:var(--soft);color:#465c76;border-radius:999px;padding:6px 9px;font-size:11px;font-weight:750}._courseLabel_13a34_87{color:#41556e;gap:7px;margin-top:16px;font-size:11px;font-weight:750;display:grid}._courseLinks_13a34_88{flex-wrap:wrap;gap:8px;margin-top:15px;display:flex}._courseLinks_13a34_88 button{border:1px solid var(--line);color:#005dcf;letter-spacing:0;text-transform:none;box-shadow:none;background:#fff;border-radius:8px;padding:8px 10px;font-size:12px}._mappingSummary_13a34_89{color:var(--ink)!important;margin:16px 0 6px!important}._mappingDetails_13a34_90{margin-top:14px;font-size:12px}._mappingDetails_13a34_90 summary{cursor:pointer;font-weight:800}._mappingDetails_13a34_90>div{border-top:1px solid var(--line);margin-top:12px;padding-top:12px}._mappingDetails_13a34_90 a{color:#005dcf;gap:3px;display:grid}._mappingDetails_13a34_90 small{color:var(--muted);font-size:10px}._mappingDetails_13a34_90 p{margin-top:7px!important}._accessNote_13a34_92{color:#526b85;padding:0 10px;font-size:11px}._accessNote_13a34_92 a{color:#005dcf;text-decoration:underline}._chapterDialog_13a34_93{width:min(560px,94vw);max-width:94vw;height:100dvh;max-height:100dvh;color:var(--ink);overscroll-behavior:contain;background:#f7fbff;border:0;margin:0;padding:0;position:fixed;inset:0 0 0 auto;box-shadow:-30px 0 70px #0004}._chapterDialog_13a34_93::backdrop{background:#010812a8}._dialogPanel_13a34_95{min-height:100%;padding:28px}._dialogPanel_13a34_95 h2{margin:0;font-size:25px;font-weight:800;line-height:1.2}._dialogPanel_13a34_95 ._close-btn_13a34_22{flex:none}._chapterSearch_13a34_96{border:1px solid var(--line);width:100%;color:var(--ink);background:#fff;border-radius:12px;padding:12px 14px;font-size:14px}._surface_13a34_3 ._drawer-item_13a34_22{color:var(--ink)}._surface_13a34_3 ._drawer-item_13a34_22[aria-current=page]{border-color:var(--blue);background:#eaf3ff}._surface_13a34_3 ._chapter-jump_13a34_20{color:var(--ink)}._surface_13a34_3 ._chapter-jump_13a34_20:hover{border-color:var(--accent2)}@media (width<=1300px){._surface_13a34_3 ._resource-grid_13a34_18{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (width<=1100px){._surface_13a34_3 ._sticky_13a34_19{max-height:none;padding:0;overflow:visible}._surface_13a34_3 ._lab-grid_13a34_17{grid-template-columns:320px minmax(0,1fr)}}@media (width<=720px){._surface_13a34_3 ._section-head_13a34_15{flex-direction:column;align-items:flex-start;gap:10px}._surface_13a34_3 ._lab-grid_13a34_17{grid-template-columns:minmax(0,1fr)}._surface_13a34_3 ._lab-chart_13a34_17{min-height:0;padding:24px 12px}._surface_13a34_3 ._resource-grid_13a34_18{grid-template-columns:minmax(0,1fr)}._surface_13a34_3 ._game-card_13a34_18{grid-column:auto}._surface_13a34_3 ._resultsRow_13a34_60{flex-direction:column;align-items:flex-start}._surface_13a34_3 ._lesson-no_13a34_16{flex:none}._surface_13a34_3 ._lesson-top_13a34_16{gap:10px}._surface_13a34_3 ._formula_13a34_16{overflow-wrap:anywhere;text-align:right}._surface_13a34_3 ._dialogPanel_13a34_95{padding:22px 18px}._surface_13a34_3 ._path-strip_13a34_16{padding-bottom:16px}._surface_13a34_3 ._labOutput_13a34_72{font-size:30px}}.page-shell.site-theme ._surface_13a34_3 ._hero_13a34_13 ._hero-inner_13a34_13 h1{letter-spacing:-.064em;color:#fff;font-size:clamp(52px,6.2vw,94px);font-weight:850;line-height:.98}._surface_13a34_3 ._sticky_13a34_19{max-height:none;padding:0;overflow:visible}._surface_13a34_3 ._slider-row_13a34_17 input[type=range]{accent-color:var(--accent)}@media (width<=720px){.page-shell.site-theme ._surface_13a34_3 ._hero_13a34_13 ._hero-inner_13a34_13 h1{font-size:52px}}._surface_13a34_3 ._chart-grid_13a34_17{stroke:#ffffff14;stroke-width:1px}._surface_13a34_3 ._section_13a34_15,._surface_13a34_3 ._side-card_13a34_19,._surface_13a34_3 ._detailPanel_13a34_78{scroll-margin-top:110px}