@font-face{font-family:Libre Baskerville;font-style:normal;font-display:swap;font-weight:400;src:url(/assets/libre-baskerville-latin-ext-400-normal-DehDhP4C.woff2)format("woff2"),url(/assets/libre-baskerville-latin-ext-400-normal-BWURas-n.woff)format("woff");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Libre Baskerville;font-style:normal;font-display:swap;font-weight:400;src:url(/assets/libre-baskerville-latin-400-normal-C42RasBZ.woff2)format("woff2"),url(/assets/libre-baskerville-latin-400-normal-BTm3cn9P.woff)format("woff");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Libre Baskerville;font-style:normal;font-display:swap;font-weight:700;src:url(/assets/libre-baskerville-latin-ext-700-normal-URU-TBJY.woff2)format("woff2"),url(/assets/libre-baskerville-latin-ext-700-normal-CL-pJSzx.woff)format("woff");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Libre Baskerville;font-style:normal;font-display:swap;font-weight:700;src:url(/assets/libre-baskerville-latin-700-normal-CLGq6Yj4.woff2)format("woff2"),url(/assets/libre-baskerville-latin-700-normal-D1DCMXWx.woff)format("woff");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Outfit;font-style:normal;font-display:swap;font-weight:400;src:url(/assets/outfit-latin-ext-400-normal-5tcqmc2S.woff2)format("woff2"),url(/assets/outfit-latin-ext-400-normal-DHm7mdGe.woff)format("woff");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Outfit;font-style:normal;font-display:swap;font-weight:400;src:url(/assets/outfit-latin-400-normal-BGsTXAXT.woff2)format("woff2"),url(/assets/outfit-latin-400-normal-DMwTpYkH.woff)format("woff");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Outfit;font-style:normal;font-display:swap;font-weight:500;src:url(/assets/outfit-latin-ext-500-normal-zeox_O30.woff2)format("woff2"),url(/assets/outfit-latin-ext-500-normal-DrCvqoFD.woff)format("woff");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Outfit;font-style:normal;font-display:swap;font-weight:500;src:url(/assets/outfit-latin-500-normal-DKnIMDSk.woff2)format("woff2"),url(/assets/outfit-latin-500-normal-ClnHRwRh.woff)format("woff");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Outfit;font-style:normal;font-display:swap;font-weight:600;src:url(/assets/outfit-latin-ext-600-normal-B85nYjL1.woff2)format("woff2"),url(/assets/outfit-latin-ext-600-normal-CWJcPgd7.woff)format("woff");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Outfit;font-style:normal;font-display:swap;font-weight:600;src:url(/assets/outfit-latin-600-normal-B7SfZ07L.woff2)format("woff2"),url(/assets/outfit-latin-600-normal-BEfTtDA7.woff)format("woff");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Outfit;font-style:normal;font-display:swap;font-weight:700;src:url(/assets/outfit-latin-ext-700-normal-CI4iH74K.woff2)format("woff2"),url(/assets/outfit-latin-ext-700-normal-fjS8-Gm7.woff)format("woff");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Outfit;font-style:normal;font-display:swap;font-weight:700;src:url(/assets/outfit-latin-700-normal-Cu9v6i1X.woff2)format("woff2"),url(/assets/outfit-latin-700-normal-D4itBLBr.woff)format("woff");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:IBM Plex Mono;font-style:normal;font-display:swap;font-weight:400;src:url(/assets/ibm-plex-mono-cyrillic-ext-400-normal-xuaO2J-f.woff2)format("woff2"),url(/assets/ibm-plex-mono-cyrillic-ext-400-normal-DMdlQ8Kv.woff)format("woff");unicode-range:U+460-52F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:IBM Plex Mono;font-style:normal;font-display:swap;font-weight:400;src:url(/assets/ibm-plex-mono-cyrillic-400-normal-BSMlKf0J.woff2)format("woff2"),url(/assets/ibm-plex-mono-cyrillic-400-normal-CEL4l2ZJ.woff)format("woff");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:IBM Plex Mono;font-style:normal;font-display:swap;font-weight:400;src:url(/assets/ibm-plex-mono-vietnamese-400-normal-BulugwFq.woff2)format("woff2"),url(/assets/ibm-plex-mono-vietnamese-400-normal-DDuiU_S-.woff)format("woff");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:IBM Plex Mono;font-style:normal;font-display:swap;font-weight:400;src:url(/assets/ibm-plex-mono-latin-ext-400-normal-BmRBH3aV.woff2)format("woff2"),url(/assets/ibm-plex-mono-latin-ext-400-normal-D3D2R8hC.woff)format("woff");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:IBM Plex Mono;font-style:normal;font-display:swap;font-weight:400;src:url(/assets/ibm-plex-mono-latin-400-normal-DMJ8VG8y.woff2)format("woff2"),url(/assets/ibm-plex-mono-latin-400-normal-CvHOgSBP.woff)format("woff");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:IBM Plex Mono;font-style:normal;font-display:swap;font-weight:500;src:url(/assets/ibm-plex-mono-cyrillic-ext-500-normal-BqneJy0T.woff2)format("woff2"),url(/assets/ibm-plex-mono-cyrillic-ext-500-normal-BIfNGwUT.woff)format("woff");unicode-range:U+460-52F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:IBM Plex Mono;font-style:normal;font-display:swap;font-weight:500;src:url(/assets/ibm-plex-mono-cyrillic-500-normal-Bq9vWWag.woff2)format("woff2"),url(/assets/ibm-plex-mono-cyrillic-500-normal-Ael50iVv.woff)format("woff");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:IBM Plex Mono;font-style:normal;font-display:swap;font-weight:500;src:url(/assets/ibm-plex-mono-vietnamese-500-normal-DZ4AoWbu.woff2)format("woff2"),url(/assets/ibm-plex-mono-vietnamese-500-normal-C8zxqsMH.woff)format("woff");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:IBM Plex Mono;font-style:normal;font-display:swap;font-weight:500;src:url(/assets/ibm-plex-mono-latin-ext-500-normal-CAhNIIs5.woff2)format("woff2"),url(/assets/ibm-plex-mono-latin-ext-500-normal-CZ70TYgx.woff)format("woff");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:IBM Plex Mono;font-style:normal;font-display:swap;font-weight:500;src:url(/assets/ibm-plex-mono-latin-500-normal-DSY6xOcd.woff2)format("woff2"),url(/assets/ibm-plex-mono-latin-500-normal-CB9ihrfo.woff)format("woff");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}._btn_x4m9d_1{border-radius:var(--radius-md);cursor:pointer;white-space:normal;text-align:center;overflow-wrap:anywhere;max-width:100%;min-height:36px;box-shadow:none;transition:background var(--dur) var(--ease), border-color var(--dur) var(--ease), color var(--dur) var(--ease), transform var(--dur) var(--ease);border:1px solid #0000;justify-content:center;align-items:center;gap:6px;padding:8px 14px;font-size:14px;font-weight:600;line-height:1.2;display:inline-flex}._btn_x4m9d_1:hover:not(:disabled){transform:none}._btn_x4m9d_1:active:not(:disabled){transform:scale(.98)}._btn_x4m9d_1:disabled{opacity:.48;cursor:not-allowed;box-shadow:none;transform:none}._btn_x4m9d_1[data-loading=true]:disabled{cursor:wait}._btn_primary_x4m9d_45{background:var(--color-primary);border-color:var(--color-primary);color:var(--color-on-primary)}._btn_primary_x4m9d_45:hover:not(:disabled){background:var(--color-primary-hover);border-color:var(--color-primary-hover)}._btn_secondary_x4m9d_56{background:var(--color-gold);border-color:var(--color-gold);color:var(--color-on-gold)}._btn_secondary_x4m9d_56:hover:not(:disabled){background:var(--color-gold-hover);border-color:var(--color-gold-hover)}._btn_ghost_x4m9d_67{color:var(--color-text);border-color:var(--color-border-strong);background:0 0}._btn_ghost_x4m9d_67:hover:not(:disabled){color:var(--color-text);background:var(--color-panel-low)}._btn_danger_x4m9d_78{color:var(--color-error);border-color:color-mix(in srgb, var(--color-error) 42%, white);background:#fff}._btn_danger_x4m9d_78:hover:not(:disabled){background:var(--wash-error);border-color:var(--color-error)}._card_x4m9d_89{background:var(--color-card);border:1px solid var(--color-border);border-radius:var(--radius-lg);min-width:0;box-shadow:var(--shadow-sm);transition:border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);padding:clamp(16px,1.6vw,20px)}._card_x4m9d_89:hover{border-color:var(--color-border-strong);box-shadow:var(--shadow-sm)}._badge_x4m9d_104{border-radius:var(--radius-full);letter-spacing:.02em;align-items:center;gap:6px;padding:4px 10px;font-size:12px;font-weight:600;display:inline-flex}._badge_study_x4m9d_115{background:var(--wash-primary);color:var(--color-primary-soft);border:1px solid var(--line-primary)}._badge_general_x4m9d_121{background:var(--color-panel-low);color:var(--color-secondary);border:1px solid var(--color-border)}._badge_offline_x4m9d_127{background:var(--color-panel-low);color:var(--color-text-muted);border:1px solid var(--color-border)}._badge_success_x4m9d_133{background:var(--wash-success);color:var(--color-success);border:1px solid color-mix(in srgb, var(--color-success) 24%, white)}._input_x4m9d_139,._textarea_x4m9d_140{background:var(--color-card);border:1px solid var(--color-border-strong);border-radius:var(--radius-md);width:100%;color:var(--color-text);transition:border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);outline:none;padding:8px 12px}._input_x4m9d_139:focus,._textarea_x4m9d_140:focus{border-color:var(--color-primary);box-shadow:0 0 0 3px color-mix(in srgb, var(--color-primary) 22%, transparent)}._textarea_x4m9d_140{resize:vertical;min-height:40px}._input_x4m9d_139:disabled,._textarea_x4m9d_140:disabled{opacity:.7;cursor:wait}._skeleton_x4m9d_168{background:linear-gradient(90deg, var(--color-card) 0%, var(--color-panel) 50%, var(--color-card) 100%);border-radius:var(--radius-md);background-size:200% 100%;animation:1.2s ease-in-out infinite _shimmer_x4m9d_1}@keyframes _shimmer_x4m9d_1{0%{background-position:200% 0}to{background-position:-200% 0}}._progressRing_x4m9d_189{place-items:center;display:inline-grid;position:relative}._progressRing_x4m9d_189 svg{transform:rotate(-90deg)}._progressRingLabel_x4m9d_199{font-family:var(--font-mono);font-size:14px;font-weight:700;position:absolute}._spin_x4m9d_206{flex-shrink:0;animation:.8s linear infinite _btnSpin_x4m9d_1}@keyframes _btnSpin_x4m9d_1{to{transform:rotate(360deg)}}._shell_10ph8_1{grid-template-columns:var(--sidebar-w) minmax(0, 1fr);grid-template-rows:var(--topbar-h) minmax(0, 1fr);background:var(--color-bg);grid-template-areas:"sidebar topbar""sidebar main";max-width:100%;height:100%;min-height:0;max-height:100%;display:grid;overflow:hidden}._sidebar_10ph8_16{gap:var(--space-4);background:var(--color-bg);border-right:1px solid var(--color-border);flex-direction:column;grid-area:sidebar;min-width:0;padding:16px 12px 12px;display:flex}._brand_10ph8_27{align-items:center;gap:8px;padding:0 4px 8px;display:flex}._logoMark_10ph8_34{background:var(--color-card);border:1px solid var(--color-border);border-radius:50%;place-items:center;width:40px;height:40px;display:grid;overflow:hidden}._brandText_10ph8_45{flex-direction:column;gap:2px;display:flex}._brandTitle_10ph8_51{font-family:var(--font-display);font-size:16px;font-weight:700}._brandSub_10ph8_57{color:var(--color-text-muted);font-size:12px}._nav_10ph8_62{flex-direction:column;flex:1;gap:4px;display:flex;overflow-y:auto}._navItem_10ph8_70{border-radius:var(--radius-md);color:var(--color-text-muted);transition:background var(--dur) var(--ease), color var(--dur) var(--ease);align-items:center;gap:8px;padding:8px 10px;font-size:13px;display:flex}._navItem_10ph8_70 svg{flex-shrink:0}._navItem_10ph8_70:hover{background:var(--color-panel-low);color:var(--color-text)}._navItemActive_10ph8_90{background:var(--wash-primary);color:var(--color-primary-soft);font-weight:600}._sidebarFoot_10ph8_96{border-top:1px solid var(--color-border);flex-direction:column;gap:6px;padding-top:8px;display:flex}._sidebarExams_10ph8_104{color:var(--color-text-dim);overflow-wrap:anywhere;margin:0;font-size:12px}._account_10ph8_111{justify-content:space-between;align-items:center;gap:6px;min-width:0;display:flex}._accountName_10ph8_119{min-width:0;color:var(--color-text-muted);text-overflow:ellipsis;white-space:nowrap;font-size:12px;font-weight:600;overflow:hidden}._signOut_10ph8_129{border:1px solid var(--color-border);border-radius:var(--radius-sm);font:inherit;color:var(--color-text-muted);cursor:pointer;background:0 0;flex-shrink:0;align-items:center;gap:4px;padding:3px 6px;font-size:11px;display:inline-flex}._signOut_10ph8_129:hover{color:var(--color-text);border-color:var(--color-primary)}._creator_10ph8_149{flex-direction:column;gap:4px;display:flex}._creatorBy_10ph8_155{color:var(--color-text-dim);margin:0;font-size:11px}._creatorLinks_10ph8_161{flex-wrap:wrap;gap:2px;margin:0;padding:0;list-style:none;display:flex}._creatorLink_10ph8_161{border-radius:var(--radius-sm);width:24px;height:24px;color:var(--color-text-dim);place-items:center;display:inline-grid}._creatorLink_10ph8_161:hover,._creatorLink_10ph8_161:focus-visible{color:var(--color-primary-soft);background:var(--wash-primary)}._topbar_10ph8_185{justify-content:space-between;align-items:center;gap:var(--space-4);min-width:0;padding:0 var(--main-pad);border-bottom:1px solid var(--color-border);background:var(--color-bg);grid-area:topbar;display:flex}._searchPill_10ph8_197{border-radius:var(--radius-full);background:var(--color-panel-low);min-width:0;max-width:420px;min-height:36px;color:var(--color-text-muted);cursor:pointer;text-align:left;font:inherit;transition:border-color var(--dur) var(--ease), background var(--dur) var(--ease);border:1px solid #0000;flex:1;align-items:center;gap:8px;padding:6px 12px;display:flex}._searchPill_10ph8_197 span{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}._searchPill_10ph8_197:hover{background:var(--color-bg);border-color:var(--color-border-strong)}._topMeta_10ph8_227{flex-shrink:0;align-items:center;gap:10px;display:flex}._main_10ph8_234{padding:var(--main-pad);flex-direction:column;grid-area:main;min-width:0;min-height:0;display:flex;overflow:hidden}._pageSlot_10ph8_244{flex-direction:column;flex:1;width:100%;min-width:0;min-height:0;display:flex;overflow:hidden}._pageSlot_10ph8_244>*{flex:auto;width:100%;max-width:100%;min-height:0}._kbd_10ph8_262{font-family:var(--font-mono);background:var(--color-panel-low);border:1px solid var(--color-border);border-radius:6px;flex-shrink:0;padding:2px 6px;font-size:11px;overflow:visible}._iconBtn_10ph8_273{border:1px solid var(--color-border);background:var(--color-card);width:36px;height:36px;color:var(--color-text-muted);cursor:pointer;border-radius:10px;place-items:center;display:grid}._iconBtn_10ph8_273:hover{color:var(--color-text);border-color:var(--color-primary)}._modalBackdrop_10ph8_290{z-index:80;background:var(--color-scrim);place-items:center;padding:24px;display:grid;position:fixed;inset:0}._modal_10ph8_290{background:var(--color-card);border:1px solid var(--color-border);border-radius:var(--radius-lg);width:min(440px,100%);box-shadow:var(--shadow-md);padding:20px}._modalHead_10ph8_309{justify-content:space-between;align-items:center;margin-bottom:8px;display:flex}._modalHead_10ph8_309 h2{font-family:var(--font-display);margin:0;font-size:1.15rem}._modalLead_10ph8_322{color:var(--color-text-muted);margin:0 0 16px;font-size:.9rem}._field_10ph8_328{color:var(--color-text-muted);flex-direction:column;gap:6px;margin-bottom:12px;font-size:.85rem;display:flex}._field_10ph8_328 input,._field_10ph8_328 select,._field_10ph8_328 textarea{background:var(--color-card);border:1px solid var(--color-border-strong);color:var(--color-text);border-radius:var(--radius-md);min-height:40px;font:inherit;transition:border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);padding:10px 12px}._field_10ph8_328 input:focus,._field_10ph8_328 select:focus,._field_10ph8_328 textarea:focus{border-color:var(--color-primary);box-shadow:0 0 0 3px color-mix(in srgb, var(--color-primary) 22%, transparent);outline:none}._commandList_10ph8_358{gap:4px;max-height:min(40vh,280px);margin-top:4px;display:grid;overflow:auto}._commandItem_10ph8_366{text-align:left;background:var(--color-panel-low);color:var(--color-text);cursor:pointer;font:inherit;border:1px solid #0000;border-radius:10px;padding:10px 12px}._commandItem_10ph8_366:hover,._commandItem_10ph8_366:focus-visible,._commandItemActive_10ph8_379{border-color:var(--line-primary);background:var(--wash-primary);color:var(--color-primary-soft)}._commandEmpty_10ph8_385{color:var(--color-text-muted);margin:8px 0 0;font-size:.9rem}._modalSection_10ph8_391{margin:16px 0 4px}._modalSection_10ph8_391 h3{font-family:var(--font-body);letter-spacing:.08em;text-transform:uppercase;color:var(--color-text-muted);margin:0 0 8px;font-size:.75rem;font-weight:700}._onboardHero_10ph8_405{justify-content:center;margin-bottom:12px;display:flex}._onboardModal_10ph8_411{width:min(540px,100%);max-height:calc(100dvh - 48px);overflow-y:auto}._onboardProgress_10ph8_417{grid-template-columns:repeat(7,1fr);gap:4px;margin-bottom:16px;display:grid}._onboardSeg_10ph8_424,._onboardSegDone_10ph8_425{border-radius:var(--radius-full);background:var(--color-border);height:4px}._onboardSegDone_10ph8_425{background:var(--color-primary)}._onboardEyebrow_10ph8_435{letter-spacing:.08em;text-transform:uppercase;color:var(--color-accent);margin-bottom:6px;font-size:.72rem;font-weight:600}._onboardHint_10ph8_444{color:var(--color-text-dim);margin:0;font-size:.8rem}._onboardQuick_10ph8_450{border:1px dashed var(--color-border-strong);border-radius:var(--radius-md);background:var(--color-panel-low);gap:8px;margin-top:16px;padding:14px;font-size:.9rem;display:grid}._onboardPlan_10ph8_461{border:1px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-panel-low);grid-template-columns:max-content 1fr;gap:8px 16px;margin:8px 0 12px;padding:14px;font-size:.9rem;display:grid}._onboardPlan_10ph8_461 dt{color:var(--color-text-muted)}._onboardPlan_10ph8_461 dd{margin:0;font-weight:600}._onboardPlanSteps_10ph8_482{color:var(--color-text-muted);gap:4px;margin:0 0 8px;padding-left:18px;font-size:.88rem;display:grid}._crashScreen_10ph8_491{z-index:80;background:var(--color-scrim);place-items:center;padding:24px;display:grid;position:fixed;inset:0}._crashTitle_10ph8_501{font-family:var(--font-display);margin:0 0 8px;font-size:1.15rem}._fallbackBtn_10ph8_507,._fallbackBtnPrimary_10ph8_508{font:inherit;cursor:pointer;border-radius:10px;padding:10px 14px}._fallbackBtn_10ph8_507{border:1px solid var(--color-border);color:var(--color-text);background:0 0}._fallbackBtnPrimary_10ph8_508{background:var(--color-primary);border:1px solid var(--color-primary);color:var(--color-on-primary)}._modalMeta_10ph8_527{color:var(--color-text-muted);gap:4px;margin:12px 0;font-size:.8rem;display:grid}._modalError_10ph8_535{color:var(--color-error);font-size:.85rem}._modalActions_10ph8_540{justify-content:flex-end;gap:8px;margin-top:8px;display:flex}@media (width<=1024px) and (width>=721px){._shell_10ph8_1{grid-template-columns:72px minmax(0,1fr)}._brand_10ph8_27{justify-content:center;padding:0 0 8px}._brandText_10ph8_45,._sidebarFoot_10ph8_96,._navItem_10ph8_70 span{display:none}._logoMark_10ph8_34{width:36px;height:36px}._navItem_10ph8_70{justify-content:center;padding:10px 8px}}@media (width<=720px){._shell_10ph8_1{grid-template-columns:minmax(0,1fr);grid-template-rows:var(--topbar-h) minmax(0, 1fr) var(--bottom-nav-h);grid-template-areas:"topbar""main""sidebar"}._sidebar_10ph8_16{padding:4px 6px;padding-bottom:max(4px, env(safe-area-inset-bottom));border-right:none;border-top:1px solid var(--color-border);flex-direction:row;align-items:stretch;gap:0;overflow:hidden}._brand_10ph8_27,._sidebarFoot_10ph8_96{display:none}._nav_10ph8_62{flex-direction:row;flex:1;gap:2px;overflow:hidden}._navItem_10ph8_70{white-space:normal;text-align:center;overflow-wrap:anywhere;flex-direction:column;flex:1;justify-content:center;align-items:center;gap:2px;min-width:0;padding:6px 2px;font-size:10px;line-height:1.15}._navItem_10ph8_70 span{text-overflow:ellipsis;max-width:100%;overflow:hidden}._navItemActive_10ph8_90{background:var(--wash-primary);color:var(--color-primary-soft)}._topbar_10ph8_185{padding:0 var(--main-pad)}._searchPill_10ph8_197{max-width:none}._main_10ph8_234{padding:var(--main-pad)}._modalBackdrop_10ph8_290{padding:12px}._modal_10ph8_290{padding:16px}._kbd_10ph8_262{display:none}}@media (width<=480px){._navItem_10ph8_70 span{display:none}._navItem_10ph8_70{padding:8px 2px}}._wrap_6179p_1{color:inherit;cursor:inherit;background:0 0;border:0;flex-direction:column;align-items:center;gap:8px;padding:0;display:inline-flex}button._wrap_6179p_1{cursor:pointer}._img_6179p_17{object-fit:contain;pointer-events:none;display:block}._speech_6179p_23{background:var(--color-card);border:1px solid var(--color-border);max-width:240px;color:var(--color-text);box-shadow:var(--shadow-sm);border-radius:12px 12px 12px 4px;padding:8px 12px;font-size:.88rem}._bob_6179p_34{animation:_nazaBob_6179p_1 1.6s var(--ease) infinite}@keyframes _nazaBob_6179p_1{0%,to{transform:translateY(0)}50%{transform:translateY(-8px)}}._overlay_6179p_48{z-index:90;background:var(--color-scrim);place-items:center;padding:16px;display:grid;position:fixed;inset:0}._overlayCard_6179p_58{background:var(--color-card);border:1px solid var(--color-border);border-radius:var(--radius-xl);text-align:center;width:min(400px,100%);box-shadow:var(--shadow-md);padding:clamp(16px,3vw,22px)}._overlayTitle_6179p_68{font-family:var(--font-display);margin:12px 0 8px;font-size:1.35rem}._overlayLead_6179p_74{color:var(--color-text-muted)}._shimmer_6179p_78{background:repeating-linear-gradient(90deg, var(--color-primary) 0 12px, transparent 12px 20px);background-size:32px 3px;border-radius:999px;height:3px;margin-top:20px;animation:.8s linear infinite _dash_6179p_1}@keyframes _dash_6179p_1{to{background-position:32px 0}}@media (prefers-reduced-motion:reduce){._bob_6179p_34,._shimmer_6179p_78{animation:none}}@font-face{font-display:block;font-family:KaTeX_AMS;font-style:normal;font-weight:400;src:url(/assets/KaTeX_AMS-Regular-BQhdFMY1.woff2)format("woff2"),url(/assets/KaTeX_AMS-Regular-DMm9YOAa.woff)format("woff"),url(/assets/KaTeX_AMS-Regular-DRggAlZN.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Caligraphic;font-style:normal;font-weight:700;src:url(/assets/KaTeX_Caligraphic-Bold-Dq_IR9rO.woff2)format("woff2"),url(/assets/KaTeX_Caligraphic-Bold-BEiXGLvX.woff)format("woff"),url(/assets/KaTeX_Caligraphic-Bold-ATXxdsX0.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Caligraphic;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Caligraphic-Regular-Di6jR-x-.woff2)format("woff2"),url(/assets/KaTeX_Caligraphic-Regular-CTRA-rTL.woff)format("woff"),url(/assets/KaTeX_Caligraphic-Regular-wX97UBjC.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Fraktur;font-style:normal;font-weight:700;src:url(/assets/KaTeX_Fraktur-Bold-CL6g_b3V.woff2)format("woff2"),url(/assets/KaTeX_Fraktur-Bold-BsDP51OF.woff)format("woff"),url(/assets/KaTeX_Fraktur-Bold-BdnERNNW.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Fraktur;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Fraktur-Regular-CTYiF6lA.woff2)format("woff2"),url(/assets/KaTeX_Fraktur-Regular-Dxdc4cR9.woff)format("woff"),url(/assets/KaTeX_Fraktur-Regular-CB_wures.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:normal;font-weight:700;src:url(/assets/KaTeX_Main-Bold-Cx986IdX.woff2)format("woff2"),url(/assets/KaTeX_Main-Bold-Jm3AIy58.woff)format("woff"),url(/assets/KaTeX_Main-Bold-waoOVXN0.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:italic;font-weight:700;src:url(/assets/KaTeX_Main-BoldItalic-DxDJ3AOS.woff2)format("woff2"),url(/assets/KaTeX_Main-BoldItalic-SpSLRI95.woff)format("woff"),url(/assets/KaTeX_Main-BoldItalic-DzxPMmG6.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:italic;font-weight:400;src:url(/assets/KaTeX_Main-Italic-NWA7e6Wa.woff2)format("woff2"),url(/assets/KaTeX_Main-Italic-BMLOBm91.woff)format("woff"),url(/assets/KaTeX_Main-Italic-3WenGoN9.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Main-Regular-B22Nviop.woff2)format("woff2"),url(/assets/KaTeX_Main-Regular-Dr94JaBh.woff)format("woff"),url(/assets/KaTeX_Main-Regular-ypZvNtVU.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Math;font-style:italic;font-weight:700;src:url(/assets/KaTeX_Math-BoldItalic-CZnvNsCZ.woff2)format("woff2"),url(/assets/KaTeX_Math-BoldItalic-iY-2wyZ7.woff)format("woff"),url(/assets/KaTeX_Math-BoldItalic-B3XSjfu4.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Math;font-style:italic;font-weight:400;src:url(/assets/KaTeX_Math-Italic-t53AETM-.woff2)format("woff2"),url(/assets/KaTeX_Math-Italic-DA0__PXp.woff)format("woff"),url(/assets/KaTeX_Math-Italic-flOr_0UB.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:normal;font-weight:700;src:url(/assets/KaTeX_SansSerif-Bold-D1sUS0GD.woff2)format("woff2"),url(/assets/KaTeX_SansSerif-Bold-DbIhKOiC.woff)format("woff"),url(/assets/KaTeX_SansSerif-Bold-CFMepnvq.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:italic;font-weight:400;src:url(/assets/KaTeX_SansSerif-Italic-C3H0VqGB.woff2)format("woff2"),url(/assets/KaTeX_SansSerif-Italic-DN2j7dab.woff)format("woff"),url(/assets/KaTeX_SansSerif-Italic-YYjJ1zSn.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:normal;font-weight:400;src:url(/assets/KaTeX_SansSerif-Regular-DDBCnlJ7.woff2)format("woff2"),url(/assets/KaTeX_SansSerif-Regular-CS6fqUqJ.woff)format("woff"),url(/assets/KaTeX_SansSerif-Regular-BNo7hRIc.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Script;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Script-Regular-D3wIWfF6.woff2)format("woff2"),url(/assets/KaTeX_Script-Regular-D5yQViql.woff)format("woff"),url(/assets/KaTeX_Script-Regular-C5JkGWo-.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size1;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Size1-Regular-mCD8mA8B.woff2)format("woff2"),url(/assets/KaTeX_Size1-Regular-C195tn64.woff)format("woff"),url(/assets/KaTeX_Size1-Regular-Dbsnue_I.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size2;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Size2-Regular-Dy4dx90m.woff2)format("woff2"),url(/assets/KaTeX_Size2-Regular-oD1tc_U0.woff)format("woff"),url(/assets/KaTeX_Size2-Regular-B7gKUWhC.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size3;font-style:normal;font-weight:400;src:url(data:font/woff2;base64,d09GMgABAAAAAA4oAA4AAAAAHbQAAA3TAAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAABmAAgRQIDgmcDBEICo1oijYBNgIkA14LMgAEIAWJAAeBHAyBHBvbGiMRdnO0IkRRkiYDgr9KsJ1NUAf2kILNxgUmgqIgq1P89vcbIcmsQbRps3vCcXdYOKSWEPEKgZgQkprQQsxIXUgq0DqpGKmIvrgkeVGtEQD9DzAO29fM9jYhxZEsL2FeURH2JN4MIcTdO049NCVdxQ/w9NrSYFEBKTDKpLKfNkCGDc1RwjZLQcm3vqJ2UW9Xfa3tgAHz6ivp6vgC2yD4/6352ndnN0X0TL7seypkjZlMsjmZnf0Mm5Q+JykRWQBKCVCVPbARPXWyQtb5VgLB6Biq7/Uixcj2WGqdI8tGSgkuRG+t910GKP2D7AQH0DB9FMDW/obJZ8giFI3Wg8Cvevz0M+5m0rTh7XDBlvo9Y4vm13EXmfttwI4mBo1EG15fxJhUiCLbiiyCf/ZA6MFAhg3pGIZGdGIVjtPn6UcMk9A/UUr9PhoNsCENw1APAq0gpH73e+M+0ueyHbabc3vkbcdtzcf/fiy+NxQEjf9ud/ELBHAXJ0nk4z+MXH2Ev/kWyV4k7SkvpPc9Qr38F6RPWnM9cN6DJ0AdD1BhtgABtmoRoFCvPsBAumNm6soZG2Gk5GyVTo2sJncSyp0jQTYoR6WDvTwaaEcHsxHfvuWhHA3a6bN7twRKtcGok6NsCi7jYRrM2jExsUFMxMQYuJbMhuWNOumEJy9hi29Dmg5zMp/A5+hhPG19j1vBrq8JTLr8ki5VLPmG/PynJHVul440bxg5xuymHUFPBshC+nA9I1FmwbRBTNHAcik3Oae0cxKoI3MOriM42UrPe51nsaGxJ+WfXubAsP84aabUlQSJ1IiE0iPETLUU4CATgfXSCSpuRFRmCGbO+wSpAnzaeaCYW1VNEysRtuXCEL1kUFUbbtMv3Tilt/1c11jt3Q5bbMa84cpWipp8Elw3MZhOHsOlwwVUQM3lAR35JiFQbaYCRnMF2lxAWoOg2gyoIV4PouX8HytNIfLhqpJtXB4vjiViUI8IJ7bkC4ikkQvKksnOTKICwnqWSZ9YS5f0WCxmpgjbIq7EJcM4aI2nmhLNY2JIUgOjXZFWBHb+x5oh6cwb0Tv1ackHdKi0I9OO2wE9aogIOn540CCCziyhN+IaejtgAONKznHlHyutPrHGwCx9S6B8kfS4Mfi4Eyv7OU730bT1SCBjt834cXsf43zVjPUqqJjgrjeGnBxSG4aYAKFuVbeCfkDIjAqMb6yLNIbCuvXhMH2/+k2vkNpkORhR59N1CkzoOENvneIosjYmuTxlhUzaGEJQ/iWqx4dmwpmKjrwTiTGTCVozNAYqk/zXOndWxuWSmJkQpJw3pK5KX6QrLt5LATMqpmPAQhkhK6PUjzHUn7E0gHE0kPE0iKkolgkUx9SZmVAdDgpffdyJKg3k7VmzYGCwVXGz/tXmkOIp+vcWs+EMuhhvN0h9uhfzWJziBQmCREGSIFmQIkgVpAnSBRmC//6hkLZwaVhwxlrJSOdqlFtOYxlau9F2QN5Y98xmIAsiM1HVp2VFX+DHHGg6Ecjh3vmqtidX3qHI2qycTk/iwxSt5UzTmEP92ZBnEWTk4Mx8Mpl78ZDokxg/KWb+Q0QkvdKVmq3TMW+RXEgrsziSAfNXFMhDc60N5N9jQzjfO0kBKpUZl0ZmwJ41j/B9Hz6wmRaJB84niNmQrzp9eSlQCDDzazGDdVi3P36VZQ+Jy4f9UBNp+3zTjqI4abaFAm+GShVaXlsGdF3FYzZcDI6cori4kMxUECl9IjJZpzkvitAoxKue+90pDMvcKRxLl53TmOKCmV/xRolNKSqqUxc6LStOETmFOiLZZptlZepcKiAzteG8PEdpnQpbOMNcMsR4RR2Bs0cKFEvSmIjAFcnarqwUL4lDhHmnVkwu1IwshbiCcgvOheZuYyOteufZZwlcTlLgnZ3o/WcYdzZHW/WGaqaVfmTZ1aWCceJjkbZqsfbkOtcFlUZM/jy+hXHDbaUobWqqXaeWobbLO99yG5N3U4wxco0rQGGcOLASFMXeJoham8M+/x6O2WywK2l4HGbq1CoUyC/IZikQhdq3SiuNrvAEj0AVu9x2x3lp/xWzahaxidezFVtdcb5uEnzyl0ZmYiuKI0exvCd4Xc9CV1KB0db00z92wDPde0kukbvZIWN6jUWFTmPIC/Y4UPCm8UfDTFZpZNon1qLFTkBhxzB+FjQRA2Q/YRJT8pQigslMaUpFyAG8TMlXigiqmAZX4xgijKjRlGpLE0GdplRfCaJo0JQaSxNBk6ZmMzcya0FmrcisDdn0Q3HI2sWSppYigmlM1XT/kLQZSNpMJG0WkjYbSZuDpM1F0uYhFc1HxU4m1QJjDK6iL0S5uSj5rgXc3RejEigtcRBtqYPQsiTskmO5vosV+q4VGIKbOkDg0jtRrq+Em1YloaTFar3EGr1EUC8R0kus1Uus00usL97ABr2BjXoDm/QGNhuWtMVBKOwg/i78lT7hBsAvDmwHc/ao3vmUbBmhjeYySZNWvGkfZAgISDSaDo1SVpzGDsAEkF8B+gEapViUoZgUWXcRIGFZNm6gWbAKk0bp0k1MHG9fLYtV4iS2SmLEQFARzRcnf9PUS0LVn05/J9MiRRBU3v2IrvW974v4N00L7ZMk0wXP1409CHo/an8zTRHD3eSJ6m8D4YMkZNl3M79sqeuAsr/m3f+8/yl7A50aiAEJgeBeMWzu7ui9UfUBCe2TIqZIoOd/3/udRBOQidQZUERzb2/VwZN1H/Sju82ew2H2Wfr6qvfVf3hqwDvAIpkQVFy4B9Pe9e4/XvPeceu7h3dvO56iJPf0+A6cqA2ip18ER+iFgggiuOkvj24bby0N9j2UHIkgqIt+sVgfodC4YghLSMjSZbH0VR/6dMDrYJeKHilKTemt6v6kvzvn3/RrdWtr0GoN/xL+Sex/cPYLUpepx9cz/D46UPU5KXgAQa+NDps1v6J3xP1i2HtaDB0M9aX2deA7SYff//+gUCovMmIK/qfsFcOk+4Y5ZN97XlG6zebqtMbKgeRFi51vnxTQYBUik2rS/Cn6PC8ADR8FGxsRPB82dzfND90gIcshOcYUkfjherBz53odpm6TP8txlwOZ71xmfHHOvq053qFF/MRlS3jP0ELudrf2OeN8DHvp6ZceLe8qKYvWz/7yp0u4dKPfli3CYq0O13Ih71mylJ80tOi10On8wi+F4+LWgDPeJ30msSQt9/vkmHq9/Lvo2b461mP801v3W4xTcs6CbvF9UDdrSt+A8OUbpSh55qAUFXWznBBfdeJ8a4d7ugT5tvxUza3h9m4H7ptTqiG4z0g5dc0X29OcGlhpGFMpQo9ytTS+NViZpNdvU4kWx+LKxNY10kQ1yqGXrhe4/1nvP7E+nd5A92TtaRplbHSqoIdOqtRWti+fkB5/n1+/VvCmz12pG1kpQWsfi1ftlBobm0bpngs16CHkbIwdLnParxtTV3QYRlfJ0KFskH7pdN/YDn+yRuSd7sNH3aO0DYPggk6uWuXrfOc+fa3VTxFVvKaNxHsiHmsXyCLIE5yuOeN3/Jdf8HBL/5M6shjyhxHx9BjB1O0+4NLOnjLLSxwO7ukN4jMbOIcD879KLSi6Pk61Oqm2377n8079PXEEQ7cy7OKEC9nbpet118fxweTafpt69x/Bt8UqGzNQt7aelpc44dn5cqhwf71+qKp/Zf/+a0zcizOUWpl/iBcSXip0pplkatCchoH5c5aUM8I7/dWxAej8WicPL1URFZ9BDJelUwEwTkGqUhgSlydVes95YdXvhh9Gfz/aeFWvgVb4tuLbcv4+wLdutVZv/cUonwBD/6eDlE0aSiKK/uoH3+J1wDE/jMVqY2ysGufN84oIXB0sPzy8ollX/LegY74DgJXJR57sn+VGza0x3DnuIgABFM15LmajjjsNlYj+JEZGbuRYcAMOWxFkPN2w6Wd46xo4gVWQR/X4lyI/R6K/YK0110GzudPRW7Y+UOBGTfNNzHeYT0fiH0taunBpq9HEW8OKSaBGj21L0MqenEmNRWBAWDWAk4CpNoEZJ2tTaPFgbQYj8HxtFilErs3BTRwT8uO1NXQaWfIotchmPkAF5mMBAliEmZiOGVgCG9LgRzpscMAOOwowlT3JhusdazXGSC/hxR3UlmWVwWHpOIKheqONvjyhSiTHIkVUco5bnji8m//zL7PKaT1Vl5I6UE609f+gkr6MZKVyKc7zJRmCahLsdlyA5fdQkRSan9LgnnLEyGSkaKJCJog0wAgvepWBt80+1yKln1bMVtCljfNWDueKLsWwaEbBSfSPTEmVRsUcYYMnEjcjeyCZzBXK9E9BYBXLKjOSpUDR+nEV3TFSUdQaz+ot98QxgXwx0GQ+EEUAKB2qZPkQQ0GqFD8UPFMqyaCHM24BZmSGic9EYMagKizOw9Hz50DMrDLrqqLkTAhplMictiCAx5S3BIUQdeJeLnBy2CNtMfz6cV4u8XKoFZQesbf9YZiIERiHjaNodDW6LgcirX/mPnJIkBGDUpTBhSa0EIr38D5hCIszhCM8URGBqImoWjpvpt1ebu/v3Gl3qJfMnNM+9V+kiRFyROTPHQWOcs1dNW94/ukKMPZBvDi55i5CttdeJz84DLngLqjcdwEZ87bFFR8CIG35OAkDVN6VRDZ7aq67NteYqZ2lpT8oYB2CytoBd6VuAx4WgiAsnuj3WohG+LugzXiQRDeM3XYXlULv4dp5VFYC)format("woff2"),url(/assets/KaTeX_Size3-Regular-CTq5MqoE.woff)format("woff"),url(/assets/KaTeX_Size3-Regular-DgpXs0kz.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size4;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Size4-Regular-Dl5lxZxV.woff2)format("woff2"),url(/assets/KaTeX_Size4-Regular-BF-4gkZK.woff)format("woff"),url(/assets/KaTeX_Size4-Regular-DWFBv043.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Typewriter;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Typewriter-Regular-CO6r4hn1.woff2)format("woff2"),url(/assets/KaTeX_Typewriter-Regular-C0xS9mPB.woff)format("woff"),url(/assets/KaTeX_Typewriter-Regular-D3Ib7_Hf.ttf)format("truetype")}.katex{text-indent:0;text-rendering:auto;font:1.21em/1.2 KaTeX_Main,Times New Roman,serif;position:relative}.katex *{border-color:currentColor;-ms-high-contrast-adjust:none!important}.katex .katex-version:after{content:"0.18.4"}.katex .katex-mathml{clip-path:inset(50%);border:0;width:1px;height:1px;padding:0;position:absolute;overflow:hidden}.katex .katex-html>.katex-newline{display:block}.katex .katex-base{white-space:nowrap;width:min-content;position:relative}.katex .katex-base,.katex .katex-strut{display:inline-block}.katex .textbf{font-weight:700}.katex .textit{font-style:italic}.katex .textrm{font-family:KaTeX_Main}.katex .textsf{font-family:KaTeX_SansSerif}.katex .texttt{font-family:KaTeX_Typewriter}.katex .mathnormal{font-family:KaTeX_Math;font-style:italic}.katex .mathit{font-family:KaTeX_Main;font-style:italic}.katex .mathrm{font-style:normal}.katex .mathbf{font-family:KaTeX_Main;font-weight:700}.katex .boldsymbol{font-family:KaTeX_Math;font-style:italic;font-weight:700}.katex .amsrm,.katex .mathbb,.katex .textbb{font-family:KaTeX_AMS}.katex .mathcal{font-family:KaTeX_Caligraphic}.katex .mathfrak,.katex .textfrak{font-family:KaTeX_Fraktur}.katex .mathboldfrak,.katex .textboldfrak{font-family:KaTeX_Fraktur;font-weight:700}.katex .mathtt{font-family:KaTeX_Typewriter}.katex .mathscr,.katex .textscr{font-family:KaTeX_Script}.katex .mathsf,.katex .textsf{font-family:KaTeX_SansSerif}.katex .mathboldsf,.katex .textboldsf{font-family:KaTeX_SansSerif;font-weight:700}.katex .mathitsf,.katex .mathsfit,.katex .textitsf{font-family:KaTeX_SansSerif;font-style:italic}.katex .mainrm{font-family:KaTeX_Main;font-style:normal}.katex .vlist-t{border-collapse:collapse;table-layout:fixed;display:inline-table}.katex .vlist-r{display:table-row}.katex .vlist{vertical-align:bottom;display:table-cell;position:relative}.katex .vlist>span{height:0;display:block;position:relative}.katex .vlist>span>span{display:inline-block}.katex .vlist>span>.pstrut{width:0;overflow:hidden}.katex .vlist-t2{margin-right:-2px}.katex .vlist-s{vertical-align:bottom;width:2px;min-width:2px;font-size:1px;display:table-cell}.katex .katex-vbox{flex-direction:column;align-items:baseline;display:inline-flex}.katex .katex-thinbox{flex-direction:row;width:0;max-width:0;display:inline-flex}.katex .msupsub{text-align:left}.katex .mfrac>span>span{text-align:center}.katex .mfrac .frac-line{border-bottom-style:solid;width:100%;display:inline-block}.katex .katex-hdashline,.katex .katex-hline,.katex .katex-overline .overline-line,.katex .katex-rule,.katex .katex-underline .underline-line,.katex .mfrac .frac-line{min-height:1px}.katex .mspace{display:inline-block}.katex .katex-smash{line-height:0;display:inline}.katex .clap,.katex .llap,.katex .rlap{width:0;position:relative}.katex .clap>.katex-inner,.katex .llap>.katex-inner,.katex .rlap>.katex-inner{position:absolute}.katex .clap>.katex-fix,.katex .llap>.katex-fix,.katex .rlap>.katex-fix{display:inline-block}.katex .llap>.katex-inner{right:0}.katex .clap>.katex-inner,.katex .rlap>.katex-inner{left:0}.katex .clap>.katex-inner>span{margin-left:-50%;margin-right:50%}.katex .katex-rule{border:0 solid;display:inline-block;position:relative}.katex .katex-hline,.katex .katex-overline .overline-line,.katex .katex-underline .underline-line{border-bottom-style:solid;width:100%;display:inline-block}.katex .katex-hdashline{border-bottom-style:dashed;width:100%;display:inline-block}.katex .sqrt>.katex-root{margin-left:.277778em;margin-right:-.555556em}.katex .fontsize-ensurer.reset-size1.size1,.katex .katex-sizing.reset-size1.size1{font-size:1em}.katex .fontsize-ensurer.reset-size1.size2,.katex .katex-sizing.reset-size1.size2{font-size:1.2em}.katex .fontsize-ensurer.reset-size1.size3,.katex .katex-sizing.reset-size1.size3{font-size:1.4em}.katex .fontsize-ensurer.reset-size1.size4,.katex .katex-sizing.reset-size1.size4{font-size:1.6em}.katex .fontsize-ensurer.reset-size1.size5,.katex .katex-sizing.reset-size1.size5{font-size:1.8em}.katex .fontsize-ensurer.reset-size1.size6,.katex .katex-sizing.reset-size1.size6{font-size:2em}.katex .fontsize-ensurer.reset-size1.size7,.katex .katex-sizing.reset-size1.size7{font-size:2.4em}.katex .fontsize-ensurer.reset-size1.size8,.katex .katex-sizing.reset-size1.size8{font-size:2.88em}.katex .fontsize-ensurer.reset-size1.size9,.katex .katex-sizing.reset-size1.size9{font-size:3.456em}.katex .fontsize-ensurer.reset-size1.size10,.katex .katex-sizing.reset-size1.size10{font-size:4.148em}.katex .fontsize-ensurer.reset-size1.size11,.katex .katex-sizing.reset-size1.size11{font-size:4.976em}.katex .fontsize-ensurer.reset-size2.size1,.katex .katex-sizing.reset-size2.size1{font-size:.833333em}.katex .fontsize-ensurer.reset-size2.size2,.katex .katex-sizing.reset-size2.size2{font-size:1em}.katex .fontsize-ensurer.reset-size2.size3,.katex .katex-sizing.reset-size2.size3{font-size:1.16667em}.katex .fontsize-ensurer.reset-size2.size4,.katex .katex-sizing.reset-size2.size4{font-size:1.33333em}.katex .fontsize-ensurer.reset-size2.size5,.katex .katex-sizing.reset-size2.size5{font-size:1.5em}.katex .fontsize-ensurer.reset-size2.size6,.katex .katex-sizing.reset-size2.size6{font-size:1.66667em}.katex .fontsize-ensurer.reset-size2.size7,.katex .katex-sizing.reset-size2.size7{font-size:2em}.katex .fontsize-ensurer.reset-size2.size8,.katex .katex-sizing.reset-size2.size8{font-size:2.4em}.katex .fontsize-ensurer.reset-size2.size9,.katex .katex-sizing.reset-size2.size9{font-size:2.88em}.katex .fontsize-ensurer.reset-size2.size10,.katex .katex-sizing.reset-size2.size10{font-size:3.45667em}.katex .fontsize-ensurer.reset-size2.size11,.katex .katex-sizing.reset-size2.size11{font-size:4.14667em}.katex .fontsize-ensurer.reset-size3.size1,.katex .katex-sizing.reset-size3.size1{font-size:.714286em}.katex .fontsize-ensurer.reset-size3.size2,.katex .katex-sizing.reset-size3.size2{font-size:.857143em}.katex .fontsize-ensurer.reset-size3.size3,.katex .katex-sizing.reset-size3.size3{font-size:1em}.katex .fontsize-ensurer.reset-size3.size4,.katex .katex-sizing.reset-size3.size4{font-size:1.14286em}.katex .fontsize-ensurer.reset-size3.size5,.katex .katex-sizing.reset-size3.size5{font-size:1.28571em}.katex .fontsize-ensurer.reset-size3.size6,.katex .katex-sizing.reset-size3.size6{font-size:1.42857em}.katex .fontsize-ensurer.reset-size3.size7,.katex .katex-sizing.reset-size3.size7{font-size:1.71429em}.katex .fontsize-ensurer.reset-size3.size8,.katex .katex-sizing.reset-size3.size8{font-size:2.05714em}.katex .fontsize-ensurer.reset-size3.size9,.katex .katex-sizing.reset-size3.size9{font-size:2.46857em}.katex .fontsize-ensurer.reset-size3.size10,.katex .katex-sizing.reset-size3.size10{font-size:2.96286em}.katex .fontsize-ensurer.reset-size3.size11,.katex .katex-sizing.reset-size3.size11{font-size:3.55429em}.katex .fontsize-ensurer.reset-size4.size1,.katex .katex-sizing.reset-size4.size1{font-size:.625em}.katex .fontsize-ensurer.reset-size4.size2,.katex .katex-sizing.reset-size4.size2{font-size:.75em}.katex .fontsize-ensurer.reset-size4.size3,.katex .katex-sizing.reset-size4.size3{font-size:.875em}.katex .fontsize-ensurer.reset-size4.size4,.katex .katex-sizing.reset-size4.size4{font-size:1em}.katex .fontsize-ensurer.reset-size4.size5,.katex .katex-sizing.reset-size4.size5{font-size:1.125em}.katex .fontsize-ensurer.reset-size4.size6,.katex .katex-sizing.reset-size4.size6{font-size:1.25em}.katex .fontsize-ensurer.reset-size4.size7,.katex .katex-sizing.reset-size4.size7{font-size:1.5em}.katex .fontsize-ensurer.reset-size4.size8,.katex .katex-sizing.reset-size4.size8{font-size:1.8em}.katex .fontsize-ensurer.reset-size4.size9,.katex .katex-sizing.reset-size4.size9{font-size:2.16em}.katex .fontsize-ensurer.reset-size4.size10,.katex .katex-sizing.reset-size4.size10{font-size:2.5925em}.katex .fontsize-ensurer.reset-size4.size11,.katex .katex-sizing.reset-size4.size11{font-size:3.11em}.katex .fontsize-ensurer.reset-size5.size1,.katex .katex-sizing.reset-size5.size1{font-size:.555556em}.katex .fontsize-ensurer.reset-size5.size2,.katex .katex-sizing.reset-size5.size2{font-size:.666667em}.katex .fontsize-ensurer.reset-size5.size3,.katex .katex-sizing.reset-size5.size3{font-size:.777778em}.katex .fontsize-ensurer.reset-size5.size4,.katex .katex-sizing.reset-size5.size4{font-size:.888889em}.katex .fontsize-ensurer.reset-size5.size5,.katex .katex-sizing.reset-size5.size5{font-size:1em}.katex .fontsize-ensurer.reset-size5.size6,.katex .katex-sizing.reset-size5.size6{font-size:1.11111em}.katex .fontsize-ensurer.reset-size5.size7,.katex .katex-sizing.reset-size5.size7{font-size:1.33333em}.katex .fontsize-ensurer.reset-size5.size8,.katex .katex-sizing.reset-size5.size8{font-size:1.6em}.katex .fontsize-ensurer.reset-size5.size9,.katex .katex-sizing.reset-size5.size9{font-size:1.92em}.katex .fontsize-ensurer.reset-size5.size10,.katex .katex-sizing.reset-size5.size10{font-size:2.30444em}.katex .fontsize-ensurer.reset-size5.size11,.katex .katex-sizing.reset-size5.size11{font-size:2.76444em}.katex .fontsize-ensurer.reset-size6.size1,.katex .katex-sizing.reset-size6.size1{font-size:.5em}.katex .fontsize-ensurer.reset-size6.size2,.katex .katex-sizing.reset-size6.size2{font-size:.6em}.katex .fontsize-ensurer.reset-size6.size3,.katex .katex-sizing.reset-size6.size3{font-size:.7em}.katex .fontsize-ensurer.reset-size6.size4,.katex .katex-sizing.reset-size6.size4{font-size:.8em}.katex .fontsize-ensurer.reset-size6.size5,.katex .katex-sizing.reset-size6.size5{font-size:.9em}.katex .fontsize-ensurer.reset-size6.size6,.katex .katex-sizing.reset-size6.size6{font-size:1em}.katex .fontsize-ensurer.reset-size6.size7,.katex .katex-sizing.reset-size6.size7{font-size:1.2em}.katex .fontsize-ensurer.reset-size6.size8,.katex .katex-sizing.reset-size6.size8{font-size:1.44em}.katex .fontsize-ensurer.reset-size6.size9,.katex .katex-sizing.reset-size6.size9{font-size:1.728em}.katex .fontsize-ensurer.reset-size6.size10,.katex .katex-sizing.reset-size6.size10{font-size:2.074em}.katex .fontsize-ensurer.reset-size6.size11,.katex .katex-sizing.reset-size6.size11{font-size:2.488em}.katex .fontsize-ensurer.reset-size7.size1,.katex .katex-sizing.reset-size7.size1{font-size:.416667em}.katex .fontsize-ensurer.reset-size7.size2,.katex .katex-sizing.reset-size7.size2{font-size:.5em}.katex .fontsize-ensurer.reset-size7.size3,.katex .katex-sizing.reset-size7.size3{font-size:.583333em}.katex .fontsize-ensurer.reset-size7.size4,.katex .katex-sizing.reset-size7.size4{font-size:.666667em}.katex .fontsize-ensurer.reset-size7.size5,.katex .katex-sizing.reset-size7.size5{font-size:.75em}.katex .fontsize-ensurer.reset-size7.size6,.katex .katex-sizing.reset-size7.size6{font-size:.833333em}.katex .fontsize-ensurer.reset-size7.size7,.katex .katex-sizing.reset-size7.size7{font-size:1em}.katex .fontsize-ensurer.reset-size7.size8,.katex .katex-sizing.reset-size7.size8{font-size:1.2em}.katex .fontsize-ensurer.reset-size7.size9,.katex .katex-sizing.reset-size7.size9{font-size:1.44em}.katex .fontsize-ensurer.reset-size7.size10,.katex .katex-sizing.reset-size7.size10{font-size:1.72833em}.katex .fontsize-ensurer.reset-size7.size11,.katex .katex-sizing.reset-size7.size11{font-size:2.07333em}.katex .fontsize-ensurer.reset-size8.size1,.katex .katex-sizing.reset-size8.size1{font-size:.347222em}.katex .fontsize-ensurer.reset-size8.size2,.katex .katex-sizing.reset-size8.size2{font-size:.416667em}.katex .fontsize-ensurer.reset-size8.size3,.katex .katex-sizing.reset-size8.size3{font-size:.486111em}.katex .fontsize-ensurer.reset-size8.size4,.katex .katex-sizing.reset-size8.size4{font-size:.555556em}.katex .fontsize-ensurer.reset-size8.size5,.katex .katex-sizing.reset-size8.size5{font-size:.625em}.katex .fontsize-ensurer.reset-size8.size6,.katex .katex-sizing.reset-size8.size6{font-size:.694444em}.katex .fontsize-ensurer.reset-size8.size7,.katex .katex-sizing.reset-size8.size7{font-size:.833333em}.katex .fontsize-ensurer.reset-size8.size8,.katex .katex-sizing.reset-size8.size8{font-size:1em}.katex .fontsize-ensurer.reset-size8.size9,.katex .katex-sizing.reset-size8.size9{font-size:1.2em}.katex .fontsize-ensurer.reset-size8.size10,.katex .katex-sizing.reset-size8.size10{font-size:1.44028em}.katex .fontsize-ensurer.reset-size8.size11,.katex .katex-sizing.reset-size8.size11{font-size:1.72778em}.katex .fontsize-ensurer.reset-size9.size1,.katex .katex-sizing.reset-size9.size1{font-size:.289352em}.katex .fontsize-ensurer.reset-size9.size2,.katex .katex-sizing.reset-size9.size2{font-size:.347222em}.katex .fontsize-ensurer.reset-size9.size3,.katex .katex-sizing.reset-size9.size3{font-size:.405093em}.katex .fontsize-ensurer.reset-size9.size4,.katex .katex-sizing.reset-size9.size4{font-size:.462963em}.katex .fontsize-ensurer.reset-size9.size5,.katex .katex-sizing.reset-size9.size5{font-size:.520833em}.katex .fontsize-ensurer.reset-size9.size6,.katex .katex-sizing.reset-size9.size6{font-size:.578704em}.katex .fontsize-ensurer.reset-size9.size7,.katex .katex-sizing.reset-size9.size7{font-size:.694444em}.katex .fontsize-ensurer.reset-size9.size8,.katex .katex-sizing.reset-size9.size8{font-size:.833333em}.katex .fontsize-ensurer.reset-size9.size9,.katex .katex-sizing.reset-size9.size9{font-size:1em}.katex .fontsize-ensurer.reset-size9.size10,.katex .katex-sizing.reset-size9.size10{font-size:1.20023em}.katex .fontsize-ensurer.reset-size9.size11,.katex .katex-sizing.reset-size9.size11{font-size:1.43981em}.katex .fontsize-ensurer.reset-size10.size1,.katex .katex-sizing.reset-size10.size1{font-size:.24108em}.katex .fontsize-ensurer.reset-size10.size2,.katex .katex-sizing.reset-size10.size2{font-size:.289296em}.katex .fontsize-ensurer.reset-size10.size3,.katex .katex-sizing.reset-size10.size3{font-size:.337512em}.katex .fontsize-ensurer.reset-size10.size4,.katex .katex-sizing.reset-size10.size4{font-size:.385728em}.katex .fontsize-ensurer.reset-size10.size5,.katex .katex-sizing.reset-size10.size5{font-size:.433944em}.katex .fontsize-ensurer.reset-size10.size6,.katex .katex-sizing.reset-size10.size6{font-size:.48216em}.katex .fontsize-ensurer.reset-size10.size7,.katex .katex-sizing.reset-size10.size7{font-size:.578592em}.katex .fontsize-ensurer.reset-size10.size8,.katex .katex-sizing.reset-size10.size8{font-size:.694311em}.katex .fontsize-ensurer.reset-size10.size9,.katex .katex-sizing.reset-size10.size9{font-size:.833173em}.katex .fontsize-ensurer.reset-size10.size10,.katex .katex-sizing.reset-size10.size10{font-size:1em}.katex .fontsize-ensurer.reset-size10.size11,.katex .katex-sizing.reset-size10.size11{font-size:1.19961em}.katex .fontsize-ensurer.reset-size11.size1,.katex .katex-sizing.reset-size11.size1{font-size:.200965em}.katex .fontsize-ensurer.reset-size11.size2,.katex .katex-sizing.reset-size11.size2{font-size:.241158em}.katex .fontsize-ensurer.reset-size11.size3,.katex .katex-sizing.reset-size11.size3{font-size:.281351em}.katex .fontsize-ensurer.reset-size11.size4,.katex .katex-sizing.reset-size11.size4{font-size:.321543em}.katex .fontsize-ensurer.reset-size11.size5,.katex .katex-sizing.reset-size11.size5{font-size:.361736em}.katex .fontsize-ensurer.reset-size11.size6,.katex .katex-sizing.reset-size11.size6{font-size:.401929em}.katex .fontsize-ensurer.reset-size11.size7,.katex .katex-sizing.reset-size11.size7{font-size:.482315em}.katex .fontsize-ensurer.reset-size11.size8,.katex .katex-sizing.reset-size11.size8{font-size:.578778em}.katex .fontsize-ensurer.reset-size11.size9,.katex .katex-sizing.reset-size11.size9{font-size:.694534em}.katex .fontsize-ensurer.reset-size11.size10,.katex .katex-sizing.reset-size11.size10{font-size:.833601em}.katex .fontsize-ensurer.reset-size11.size11,.katex .katex-sizing.reset-size11.size11{font-size:1em}.katex .delimsizing.size1{font-family:KaTeX_Size1}.katex .delimsizing.size2{font-family:KaTeX_Size2}.katex .delimsizing.size3{font-family:KaTeX_Size3}.katex .delimsizing.size4{font-family:KaTeX_Size4}.katex .delimsizing.mult .delim-size1>span{font-family:KaTeX_Size1}.katex .delimsizing.mult .delim-size4>span{font-family:KaTeX_Size4}.katex .nulldelimiter{width:.12em;display:inline-block}.katex .delimcenter,.katex .op-symbol{position:relative}.katex .op-symbol.small-op{font-family:KaTeX_Size1}.katex .op-symbol.large-op{font-family:KaTeX_Size2}.katex .katex-accent>.vlist-t,.katex .op-limits>.vlist-t{text-align:center}.katex .katex-accent .accent-body{position:relative}.katex .katex-accent .accent-body:not(.accent-full){width:0}.katex .katex-overlay{display:block}.katex .mtable .vertical-separator{min-width:1px;display:inline-block}.katex .mtable .arraycolsep{display:inline-block}.katex .mtable .col-align-c>.vlist-t{text-align:center}.katex .mtable .col-align-l>.vlist-t{text-align:left}.katex .mtable .col-align-r>.vlist-t{text-align:right}.katex .svg-align{text-align:left}.katex svg{fill:currentColor;stroke:currentColor;height:inherit;width:100%;display:block;position:absolute}.katex svg path{stroke:none}.katex svg{fill-rule:nonzero;fill-opacity:1;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1}.katex img{border-style:none;min-width:0;max-width:none;min-height:0;max-height:none}.katex .katex-stretchy{width:100%;display:block;position:relative;overflow:hidden}.katex .katex-stretchy:after,.katex .katex-stretchy:before{content:""}.katex .hide-tail{width:100%;position:relative;overflow:hidden}.katex .halfarrow-left{width:50.2%;position:absolute;left:0;overflow:hidden}.katex .halfarrow-right{width:50.2%;position:absolute;right:0;overflow:hidden}.katex .brace-left{width:25.1%;position:absolute;left:0;overflow:hidden}.katex .brace-center{width:50%;position:absolute;left:25%;overflow:hidden}.katex .brace-right{width:25.1%;position:absolute;right:0;overflow:hidden}.katex .x-arrow-pad{padding:0 .5em}.katex .cd-arrow-pad{padding:0 .55556em 0 .27778em}.katex .mover,.katex .munder,.katex .x-arrow{text-align:center}.katex .boxpad{padding:0 .3em}.katex .fbox,.katex .fcolorbox{box-sizing:border-box;border:.04em solid}.katex .cancel-pad{padding:0 .2em}.katex .cancel-lap{margin-left:-.2em;margin-right:-.2em}.katex .katex-sout{border-bottom-style:solid;border-bottom-width:.08em}.katex .angl{box-sizing:border-box;border-top:.049em solid;border-right:.049em solid;margin-right:.03889em}.katex .anglpad{padding:0 .03889em}.katex .eqn-num:before{content:"(" counter(katexEqnNo) ")";counter-increment:katexEqnNo}.katex .mml-eqn-num:before{content:"(" counter(mmlEqnNo) ")";counter-increment:mmlEqnNo}.katex .mtr-glue{width:50%}.katex .cd-vert-arrow{display:inline-block;position:relative}.katex .cd-label-left{text-align:left;display:inline-block;position:absolute;right:calc(50% + .3em)}.katex .cd-label-right{text-align:right;display:inline-block;position:absolute;left:calc(50% + .3em)}.katex-display{text-align:center;margin:1em 0;display:block}.katex-display>.katex{text-align:center;white-space:nowrap;display:block}.katex-display>.katex>.katex-html{display:block;position:relative}.katex-display>.katex>.katex-html>.katex-tag{position:absolute;right:0}.katex-display.leqno>.katex>.katex-html>.katex-tag{left:0;right:auto}.katex-display.fleqn>.katex{text-align:left;padding-left:2em}body{counter-reset:katexEqnNo mmlEqnNo}._page_159l9_7{--gutter:168px;--rule:36px;--ruling:#1c274013;background:var(--color-bg);scroll-behavior:smooth;width:100%;height:100%;overflow:hidden auto}._top_159l9_22{z-index:5;background:color-mix(in srgb, var(--color-bg) 88%, transparent);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-bottom:1px solid var(--color-border);justify-content:space-between;align-items:center;gap:12px;padding:10px clamp(14px,3vw,36px);display:flex;position:sticky;top:0}._brand_159l9_36{border-radius:var(--radius-md);align-items:center;gap:10px;display:inline-flex}._brand_159l9_36:focus-visible,._link_159l9_44:focus-visible{outline:2px solid var(--color-primary);outline-offset:3px}._brandName_159l9_49{font-family:var(--font-display);font-size:1.2rem;font-weight:700}._brandSub_159l9_55{font-family:var(--font-mono);color:var(--color-text-muted);border-left:1px solid var(--color-border-strong);padding-left:10px;font-size:.72rem}._topActions_159l9_63{align-items:center;gap:8px;display:flex}._topBtn_159l9_69{padding:8px 14px;font-size:.9rem}._book_159l9_76{max-width:1240px;margin:0 auto;padding:0 clamp(16px,3vw,40px);position:relative}._book_159l9_76:before{content:none}._hero_159l9_87,._feature_159l9_88,._account_159l9_89,._language_159l9_90{grid-template-columns:var(--gutter) minmax(0, 1fr);column-gap:16px;display:grid;position:relative}._margin_159l9_97{font-family:var(--font-mono);letter-spacing:.06em;text-transform:uppercase;color:var(--color-text-dim);text-align:right;grid-column:1;padding-top:6px;padding-right:22px;font-size:.74rem;font-weight:500;line-height:1.4}._hero_159l9_87{padding:calc(var(--rule) * 2) 0 calc(var(--rule) * 2);row-gap:calc(var(--rule) * 1.5)}._heroText_159l9_118{max-width:820px;animation:_rise_159l9_1 .52s var(--ease) both;grid-column:2}._subjects_159l9_124{font-family:var(--font-mono);color:var(--color-secondary-soft);font-size:.8rem;line-height:var(--rule);flex-wrap:wrap;gap:6px 18px;display:flex}._title_159l9_134{font-family:var(--font-display);letter-spacing:-.02em;text-wrap:balance;max-width:17ch;margin-top:8px;font-size:clamp(2.1rem,4.6vw,3.6rem);font-weight:700;line-height:1.2}._lead_159l9_146{margin-top:calc(var(--rule) / 2);max-width:62ch;color:var(--color-text-muted);font-size:1.12rem;line-height:1.65}._ctas_159l9_154{margin-top:var(--rule);flex-wrap:wrap;gap:10px;display:flex}._cta_159l9_154{padding:12px 22px;font-size:1rem}._fine_159l9_166{color:var(--color-text-muted);margin-top:10px;font-size:.85rem}._heroPrint_159l9_172{animation:_rise_159l9_1 .64s .12s var(--ease) both;grid-column:2}._print_159l9_179{background:var(--color-card-high);border:1px solid var(--color-border-strong);border-radius:var(--radius-md);box-shadow:var(--shadow-sm);margin:0;padding:8px}._print_159l9_179 img{border-radius:var(--radius-sm);border:1px solid var(--color-border);background:var(--color-bg);width:100%;height:auto;display:block}._print_159l9_179 figcaption{font-family:var(--font-mono);color:var(--color-text-muted);padding:8px 4px 2px;font-size:.74rem}._feature_159l9_88{grid-template-columns:var(--gutter) minmax(0, .8fr) minmax(0, 1.2fr);padding:calc(var(--rule) * 1.5) 0;border-top:1px solid var(--color-border);align-items:start}._feature_159l9_88>._featureText_159l9_213{grid-column:2}._feature_159l9_88>._print_159l9_179{grid-column:3}._featureText_159l9_213{padding-right:12px}._h2_159l9_225{font-family:var(--font-display);text-wrap:balance;margin-bottom:12px;font-size:clamp(1.35rem,2.2vw,1.75rem);font-weight:700;line-height:1.3}._body_159l9_234{color:var(--color-text-muted);max-width:56ch;font-size:1rem;line-height:1.65}._account_159l9_89,._language_159l9_90{padding:calc(var(--rule) * 1.5) 0;border-top:1px solid var(--color-border)}._accountBody_159l9_249,._languageBody_159l9_250{grid-column:2}._points_159l9_254{grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin:24px 0 0;display:grid}._point_159l9_254{background:var(--color-card);border:1px solid var(--color-border);border-radius:var(--radius-md);padding:14px 16px}._point_159l9_254 dt{font-family:var(--font-mono);letter-spacing:.04em;text-transform:uppercase;color:var(--color-primary-soft);margin-bottom:6px;font-size:.78rem;font-weight:500}._point_159l9_254 dd{color:var(--color-text);margin:0;font-size:.95rem;line-height:1.5}._closing_159l9_287{text-align:center;padding:calc(var(--rule) * 2) 0 calc(var(--rule) * 2.5);border-top:1px solid var(--color-border);background:var(--color-bg);flex-direction:column;align-items:center;gap:8px;display:flex;position:relative}._closingTitle_159l9_299{font-family:var(--font-display);text-wrap:balance;max-width:22ch;font-size:clamp(1.6rem,3vw,2.3rem);font-weight:700;line-height:1.25}._closing_159l9_287 ._ctas_159l9_154{justify-content:center;margin-top:16px}._footer_159l9_315{border-top:1px solid var(--color-border-strong);background:var(--color-bg);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:14px;padding:22px clamp(16px,3vw,40px) 28px;display:flex}._credit_159l9_326{font-family:var(--font-mono);color:var(--color-text);font-size:.8rem}._links_159l9_332{flex-wrap:wrap;gap:6px 16px;margin:0;padding:0;list-style:none;display:flex}._link_159l9_44{color:var(--color-text-muted);border-radius:var(--radius-sm);align-items:center;gap:6px;padding:2px;font-size:.85rem;display:inline-flex}._link_159l9_44:hover{color:var(--color-text)}@keyframes _rise_159l9_1{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}@media (prefers-reduced-motion:reduce){._page_159l9_7{scroll-behavior:auto}._heroText_159l9_118,._heroPrint_159l9_172{animation:none}}@media (width<=900px){._page_159l9_7{--gutter:0px}._book_159l9_76:before{left:8px}._hero_159l9_87,._feature_159l9_88,._account_159l9_89,._language_159l9_90{grid-template-columns:minmax(0,1fr);padding-left:12px}._margin_159l9_97,._heroText_159l9_118,._heroPrint_159l9_172,._feature_159l9_88>._featureText_159l9_213,._feature_159l9_88>._print_159l9_179,._accountBody_159l9_249,._languageBody_159l9_250{grid-column:1}._margin_159l9_97{text-align:left;margin-bottom:10px;padding:0}._hero_159l9_87 ._margin_159l9_97{display:none}._hero_159l9_87{padding-top:var(--rule)}._feature_159l9_88>._print_159l9_179{margin-top:18px}._points_159l9_254{grid-template-columns:minmax(0,1fr)}}@media (width<=520px){._brandSub_159l9_55{display:none}._topBtn_159l9_69{padding:7px 10px;font-size:.85rem}._lead_159l9_146{background-image:none;font-size:1.02rem;line-height:1.65}._cta_159l9_154{flex:auto;justify-content:center}}._checking_16fv9_1{background:var(--color-bg);width:100%;height:100%}._screen_16fv9_7{background:var(--color-bg);place-items:center;width:100%;height:100%;padding:24px;display:grid;overflow:auto}._column_16fv9_17{flex-direction:column;gap:12px;width:min(400px,100%);display:flex}._back_16fv9_24{font-family:var(--font-mono);color:var(--color-text-muted);border-radius:var(--radius-sm);align-self:flex-start;align-items:center;gap:6px;padding:2px 4px;font-size:.78rem;display:inline-flex}._back_16fv9_24:hover{color:var(--color-text)}._back_16fv9_24:focus-visible,._linkBtn_16fv9_41:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px}._notice_16fv9_46{color:var(--color-text);background:var(--color-panel-low);border-left:3px solid var(--color-primary);border-radius:var(--radius-sm);margin-bottom:12px;padding:8px 10px;font-size:.85rem}._card_16fv9_56{background:var(--color-card);border:1px solid var(--color-border);border-radius:var(--radius-lg);width:100%;box-shadow:var(--shadow-sm);flex-direction:column;padding:24px;display:flex}._hero_16fv9_67{justify-content:center;margin-bottom:12px;display:flex}._title_16fv9_73{text-align:center;margin-bottom:6px;font-size:1.2rem}._lead_16fv9_79{color:var(--color-text-muted);text-align:center;margin-bottom:18px;font-size:.9rem}._field_16fv9_86{color:var(--color-text-muted);flex-direction:column;gap:6px;margin-bottom:12px;font-size:.85rem;display:flex}._field_16fv9_86 input{background:var(--color-card);border:1px solid var(--color-border-strong);color:var(--color-text);border-radius:var(--radius-md);min-height:40px;font:inherit;transition:border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);padding:10px 12px}._field_16fv9_86 input:focus{border-color:var(--color-primary);box-shadow:0 0 0 3px color-mix(in srgb, var(--color-primary) 22%, transparent);outline:none}._passwordWrap_16fv9_112{display:flex;position:relative}._passwordWrap_16fv9_112 input{flex:1;min-width:0;padding-right:44px}._reveal_16fv9_123{border-radius:var(--radius-sm);width:36px;height:36px;color:var(--color-text-muted);cursor:pointer;background:0 0;border:none;place-items:center;display:grid;position:absolute;top:50%;right:4px;transform:translateY(-50%)}._reveal_16fv9_123:hover{color:var(--color-text)}._reveal_16fv9_123:focus-visible{outline:2px solid var(--color-primary);outline-offset:1px}._error_16fv9_148{color:var(--color-error);margin-bottom:10px;font-size:.85rem}._submit_16fv9_154{width:100%;padding:10px 12px;font-size:14px}._switch_16fv9_160{color:var(--color-text-muted);text-align:center;margin-top:14px;font-size:.85rem}._linkBtn_16fv9_41{font:inherit;color:var(--color-primary-soft);cursor:pointer;text-underline-offset:2px;background:0 0;border:none;padding:0;font-weight:600;text-decoration:underline}._page_1cpez_1{overflow-wrap:break-word;flex-direction:column;gap:clamp(12px,1.6vw,18px);width:100%;min-width:0;max-width:100%;margin:0;display:flex;overflow:auto}._pageFill_1cpez_13{gap:0;height:100%;min-height:0;max-height:100%;overflow:hidden}._pageFill_1cpez_13 ._learnShell_1cpez_21{flex:1;height:100%;min-height:0}._hero_1cpez_27{grid-template-columns:minmax(0,1.5fr) minmax(200px,.9fr);align-items:stretch;gap:clamp(10px,1.4vw,16px);display:grid}._heroCard_1cpez_34{background:var(--color-card);border:1px solid var(--color-border);border-radius:var(--radius-lg);min-width:0;min-height:0;box-shadow:var(--shadow-sm);padding:clamp(18px,2vw,28px);position:relative;overflow:hidden}._heroCard_1cpez_34:after{content:none}._eyebrow_1cpez_50{letter-spacing:.08em;text-transform:uppercase;color:var(--color-accent);margin-bottom:10px;font-size:12px;font-weight:600}._heroTitle_1cpez_59{margin-bottom:6px;font-size:clamp(1.35rem,2.4vw,1.85rem);line-height:1.15}._heroLead_1cpez_65{color:var(--color-text-muted);max-width:58ch;margin-bottom:12px}._statsRow_1cpez_71{gap:var(--space-3);grid-template-columns:repeat(auto-fit,minmax(72px,1fr));display:grid}._statLabel_1cpez_77{color:var(--color-text-muted);margin-bottom:6px;font-size:12px}._statValue_1cpez_83{font-family:var(--font-display);font-size:clamp(1.35rem,2.2vw,1.75rem);font-weight:700}._grid2_1cpez_89{grid-template-columns:minmax(0,1.2fr) minmax(0,1fr);gap:clamp(10px,1.4vw,16px);display:grid}._grid4_1cpez_95{grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:10px;display:grid}._grid3_1cpez_101{grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:10px;display:grid}._sectionTitle_1cpez_107{margin-bottom:2px;font-size:15px}._sectionHead_1cpez_112{margin-bottom:8px}._sectionBodyGap_1cpez_116{margin-top:12px}._goalHead_1cpez_120{margin-bottom:8px}._courseTitle_1cpez_124{overflow-wrap:anywhere;margin:4px 0 0;font-weight:600}._courseActions_1cpez_130{flex-wrap:wrap;gap:8px;display:flex}._inlineAction_1cpez_136{margin-top:16px}._nextLine_1cpez_140{margin:8px 0 0}._metaFoot_1cpez_144,._fieldSpaced_1cpez_148{margin-top:8px}._chipSpaced_1cpez_152{margin-top:4px}._muted_1cpez_156{color:var(--color-text-muted);font-size:14px}._rowBetween_1cpez_161{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;display:flex}._pillRow_1cpez_169{overflow-wrap:anywhere;flex-wrap:wrap;gap:8px;display:flex}._subjectDot_1cpez_176{border-radius:50%;width:10px;height:10px}._practiceHud_1cpez_182{background:var(--color-panel-low);border:1px solid var(--color-border);border-radius:10px;flex-wrap:wrap;align-items:center;gap:20px;padding:10px 14px;display:flex}._hudStat_1cpez_193{color:var(--color-text-muted);align-items:center;gap:5px;display:flex}._hudLabel_1cpez_200{text-transform:uppercase;letter-spacing:.04em;font-size:.75rem}._hudValue_1cpez_206{color:var(--color-text);font-size:.9rem;font-weight:600}._practiceHero_1cpez_212{flex-wrap:wrap;justify-content:space-between;align-items:flex-start;gap:16px;display:flex}._practiceBestBadge_1cpez_220,._practiceBestBadgeMuted_1cpez_221{border:1px solid var(--color-border);border-radius:14px;align-items:center;gap:10px;min-width:132px;padding:10px 14px;display:flex}._practiceBestBadge_1cpez_220{background:var(--wash-gold);border-color:var(--line-gold)}._practiceBestBadgeMuted_1cpez_221{background:var(--color-panel-low);color:var(--color-text-muted)}._practiceBestPct_1cpez_241{font-family:var(--font-display);color:var(--color-text);font-size:1.55rem;font-weight:700;line-height:1}._practiceBestLocked_1cpez_249{max-width:11rem;font-size:.85rem;font-weight:600;line-height:1.25}._hudMicro_1cpez_256{color:var(--color-text-muted);font-size:.72rem;font-weight:500}._practiceArena_1cpez_262{border:1px solid var(--color-border);background:var(--color-card);box-shadow:var(--shadow-sm);border-radius:16px;flex-direction:column;gap:12px;padding:14px 16px;display:flex}._practiceTrackHead_1cpez_273{color:var(--color-text-muted);text-transform:uppercase;letter-spacing:.04em;justify-content:space-between;align-items:baseline;margin-bottom:8px;font-size:.8rem;display:flex}._practiceTrackHead_1cpez_273 strong{font-family:var(--font-display);color:var(--color-text);text-transform:none;letter-spacing:0;font-size:1.05rem}._practiceDots_1cpez_292{grid-template-columns:repeat(10,minmax(0,1fr));gap:6px;display:grid}._dotEmpty_1cpez_298,._dotCurrent_1cpez_299,._dotHit_1cpez_300,._dotMiss_1cpez_301{border:1px solid var(--color-border);border-radius:999px;height:10px}._dotEmpty_1cpez_298{background:var(--color-panel-low)}._dotCurrent_1cpez_299{background:var(--color-primary);box-shadow:0 0 0 3px var(--wash-primary);border-color:#0000}._dotHit_1cpez_300{background:var(--color-success);border-color:#0000}._dotMiss_1cpez_301{background:var(--color-error);border-color:#0000}._practiceHudRow_1cpez_327{grid-template-columns:repeat(4,minmax(0,1fr));gap:6px;display:grid}._hudChip_1cpez_333{background:var(--color-panel-low);border:1px solid var(--color-border);border-radius:10px;align-items:center;gap:6px;min-width:0;padding:6px 8px;display:flex}._hudChipHot_1cpez_344{border-color:var(--line-gold);background:var(--wash-gold)}._practiceQuestionCard_1cpez_349{border-top:2px solid var(--color-primary);flex-direction:column;height:100%;min-height:0;display:flex}._practiceEmpty_1cpez_357{text-align:center;padding:28px 18px}._practiceResultModal_1cpez_362{max-width:420px}._practiceResultBody_1cpez_366{text-align:center;flex-direction:column;align-items:center;gap:10px;padding:4px 4px 12px;display:flex}._practiceResultMarkOk_1cpez_375,._practiceResultMarkBad_1cpez_376{border-radius:50%;place-items:center;width:56px;height:56px;display:grid}._practiceResultMarkOk_1cpez_375{background:color-mix(in srgb, var(--color-success) 22%, transparent);color:var(--color-success)}._practiceResultMarkBad_1cpez_376{background:color-mix(in srgb, var(--color-error) 18%, transparent);color:var(--color-error)}._practiceRoundScore_1cpez_394{flex-direction:column;align-items:center;gap:4px;display:flex}._practiceRoundPct_1cpez_401{font-family:var(--font-display);font-size:2.4rem;font-weight:700;line-height:1}._practiceNewBest_1cpez_408{letter-spacing:.03em;text-transform:uppercase;background:var(--wash-gold);color:var(--color-gold-ink);border-radius:999px;margin-top:4px;padding:3px 10px;font-size:.78rem;font-weight:700;display:inline-block}._practiceResultScore_1cpez_421{margin:0;font-size:1.15rem;font-weight:600}._practiceStreakCallout_1cpez_427{background:var(--wash-gold);color:var(--color-gold-ink);border-radius:999px;align-items:center;gap:6px;margin:0;padding:6px 12px;font-size:.95rem;font-weight:600;display:inline-flex}._practiceMotivate_1cpez_440{margin:0;font-weight:600}._practicePage_1cpez_445{gap:6px;height:100%;min-height:0;overflow:hidden}._practiceTopBar_1cpez_452{flex-wrap:wrap;flex-shrink:0;justify-content:space-between;align-items:flex-end;gap:8px;display:flex}._practiceTitleBlock_1cpez_461{min-width:0}._practiceTitle_1cpez_461{font-family:var(--font-display);margin:0;font-size:clamp(1.15rem,1.8vw,1.45rem);line-height:1.15}._practiceFilters_1cpez_472{flex-wrap:wrap;align-items:flex-end;gap:6px;display:flex}._fieldBlockCompact_1cpez_479{color:var(--color-text-muted);flex-direction:column;gap:2px;min-width:110px;font-size:.75rem;display:flex}._fieldBlockCompact_1cpez_479 select{border:1px solid var(--color-border);background:var(--color-card);min-height:34px;color:var(--color-text);border-radius:10px;padding:4px 8px;font-size:.88rem}._practiceArenaCompact_1cpez_498{border:1px solid var(--color-border);background:var(--color-card);box-shadow:var(--shadow-sm);border-radius:12px;flex-direction:column;flex-shrink:0;gap:6px;padding:8px 10px;display:flex}._practiceTrackCompact_1cpez_510{margin-top:2px}._practiceBestLockedInline_1cpez_514{color:var(--color-text-muted);font-size:.85rem;font-weight:600}._practiceMain_1cpez_520{flex-direction:column;flex:1;min-height:0;display:flex;overflow:hidden}._practiceMain_1cpez_520>*{flex:1;min-height:0;overflow:auto}._practiceQMeta_1cpez_534{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:8px;display:flex}._practiceStem_1cpez_542{margin:4px 0;font-size:.98rem;font-weight:600;line-height:1.4}._practiceFigures_1cpez_549{flex-wrap:wrap;gap:6px;margin:2px 0 6px;display:flex}._practiceFigure_1cpez_549{max-width:100%;margin:0}._practiceFigure_1cpez_549 img{object-fit:contain;border:1px solid var(--color-border);background:var(--color-card);border-radius:10px;width:auto;max-width:min(100%,360px);height:auto;max-height:110px;display:block}._optionStackCompact_1cpez_574{grid-template-columns:1fr 1fr;gap:8px;margin-top:6px;display:grid}._optionStackCompact_1cpez_574 ._optionBtn_1cpez_581,._optionStackCompact_1cpez_574 ._answerSelected_1cpez_582,._optionStackCompact_1cpez_574 ._answerCorrect_1cpez_583,._optionStackCompact_1cpez_574 ._answerWrong_1cpez_584{overflow-wrap:anywhere;word-break:break-word;align-self:stretch;width:100%;min-height:44px;padding:10px 12px;font-size:.92rem;line-height:1.35}._practiceActions_1cpez_595{flex-shrink:0;gap:8px;margin-top:8px;display:flex}@media (width<=900px){._practiceHudRow_1cpez_327{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (width<=720px){._practiceHudRow_1cpez_327{grid-template-columns:1fr 1fr}._practiceDots_1cpez_292{gap:4px}._practicePage_1cpez_445{height:auto;max-height:100%;overflow:auto}._practiceFigure_1cpez_549 img{max-height:100px}._optionStackCompact_1cpez_574,._optionStack_1cpez_574{grid-template-columns:1fr 1fr;gap:6px}}@media (width<=420px){._optionStackCompact_1cpez_574,._optionStack_1cpez_574{grid-template-columns:1fr}}._list_1cpez_641{flex-direction:column;gap:10px;display:flex}._listItem_1cpez_647{border-bottom:1px solid var(--color-border);justify-content:space-between;gap:12px;padding:12px 0;display:flex}._listItem_1cpez_647:last-child{border-bottom:none}._tutorLayout_1cpez_660{gap:var(--space-4);flex:1;grid-template-columns:minmax(0,1fr) minmax(200px,260px);width:100%;height:100%;min-height:0;max-height:100%;display:grid;overflow:hidden}._chatPane_1cpez_672{background:var(--color-panel-low);border:1px solid var(--color-border);border-radius:var(--radius-xl);flex-direction:column;min-width:0;height:100%;min-height:0;max-height:100%;display:flex;overflow:hidden}._chatHeader_1cpez_685{border-bottom:1px solid var(--color-border);flex-shrink:0;justify-content:space-between;align-items:center;padding:8px 10px;display:flex}._messages_1cpez_694{flex-direction:column;flex:auto;gap:8px;min-height:0;padding:10px;display:flex;overflow:hidden auto}._bubbleUser_1cpez_705,._bubbleAi_1cpez_706{border-radius:14px;max-width:85%;padding:10px 14px;line-height:1.55}._bubbleUser_1cpez_705{background:var(--color-card-high);border:1px solid var(--color-border);white-space:pre-wrap;word-break:break-word;border-top-right-radius:6px;align-self:flex-end}._bubbleAi_1cpez_706{background:var(--color-panel-low);border:1px solid var(--color-border);border-left:3px solid var(--color-secondary);word-break:break-word;border-top-left-radius:6px;align-self:flex-start}._bubbleAi_1cpez_706 .katex-display{max-width:100%;margin:.5em 0;padding:.2em 0;overflow-x:auto}._bubbleAi_1cpez_706 .katex{font-size:1.05em}._composer_1cpez_742{border-top:1px solid var(--color-border);background:var(--color-card);z-index:6;flex:none;align-items:flex-end;gap:8px;padding:8px 10px;display:flex;position:sticky;bottom:0}._composer_1cpez_742 input,._composer_1cpez_742 textarea{flex:1;min-width:0;max-height:72px}._sourcesPane_1cpez_762{flex-direction:column;gap:10px;min-width:0;height:100%;min-height:0;max-height:100%;display:flex;overflow-y:auto}._citeCard_1cpez_773{font-size:13px}._citeMeta_1cpez_777{color:var(--color-text-muted);margin-top:4px;font-size:12px}._answerGrid_1cpez_784{grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px;margin-top:20px;display:grid}._answerCard_1cpez_791{text-align:left;border-radius:var(--radius-lg);border:1px solid var(--color-border);background:var(--color-card);color:var(--color-text);cursor:pointer;transition:border-color var(--dur) var(--ease), transform var(--dur) var(--ease), background var(--dur) var(--ease);padding:18px}._answerCard_1cpez_791:hover{border-color:var(--line-primary)}._answerKey_1cpez_807{font-family:var(--font-display);color:var(--color-primary-soft);margin-right:8px;font-weight:700}._answerSelected_1cpez_582{border-color:var(--color-primary);background:var(--wash-primary);box-shadow:none;color:var(--color-text);font-weight:600}._optionStack_1cpez_574 ._answerSelected_1cpez_582,._optionStack_1cpez_574 ._answerCorrect_1cpez_583,._optionStack_1cpez_574 ._answerWrong_1cpez_584{text-align:left;border:1px solid var(--color-border);cursor:pointer;border-radius:12px;padding:12px 14px}._answerCorrect_1cpez_583{border-color:var(--color-success);background:var(--wash-success)}._answerWrong_1cpez_584{border-color:var(--color-error);background:var(--wash-error)}._flashcard_1cpez_843{text-align:center;min-height:180px;font-size:18px;font-family:var(--font-display);cursor:pointer;background:var(--color-card);place-items:center;display:grid}._heat_1cpez_855{grid-template-columns:repeat(7,1fr);gap:6px;display:grid}._heatCell_1cpez_861{aspect-ratio:1;background:var(--color-panel-low);border:1px solid var(--color-border);border-radius:6px}._empty_1cpez_868{text-align:center;color:var(--color-text-muted);padding:24px 16px}._lessonView_1cpez_875{flex-direction:column;flex:1;min-height:0;display:flex;overflow:hidden}._lessonTop_1cpez_883{border-bottom:1px solid var(--color-border);flex-direction:column;gap:8px;padding:10px 12px 8px;display:flex}._lessonTitle_1cpez_891{font-family:var(--font-display);margin-top:4px;font-size:18px;line-height:1.25}._lessonProgressTrack_1cpez_898{background:var(--color-panel-low);border-radius:999px;height:4px;overflow:hidden}._lessonProgressFill_1cpez_905{background:var(--color-primary);height:100%;transition:width .3s var(--ease);border-radius:999px}._lessonBody_1cpez_912{flex:1;padding:20px 16px 24px;overflow-y:auto}._lessonStepPanel_1cpez_918{outline:none;max-width:62ch;margin:0 auto}._lessonIntroRow_1cpez_924{align-items:flex-start;gap:16px;display:flex}._lessonLead_1cpez_930{margin:0;line-height:1.7}._diagramImg_1cpez_935{border-radius:12px;max-width:100%;display:block}._figCap_1cpez_941{margin-top:8px}._lessonCheckActions_1cpez_945,._lessonHint_1cpez_949{margin-top:12px}._lessonFeedbackText_1cpez_953{margin-top:14px;line-height:1.65}._localNote_1cpez_958{margin-top:8px;font-size:12px}._flashMeta_1cpez_963{margin-bottom:10px;font-size:12px;display:block}._lessonKeysHint_1cpez_969{align-self:center;font-size:12px}._lessonCardCurrent_1cpez_974{box-shadow:inset 3px 0 0 var(--color-primary);border-color:var(--line-primary)}._tutorEmpty_1cpez_979{text-align:center;flex-direction:column;flex:1;justify-content:center;align-items:center;gap:12px;padding:24px 16px;display:flex}._tutorStatus_1cpez_990{color:var(--color-text-muted);flex-shrink:0;margin:0 12px 8px;font-size:.9rem}._tutorPreparing_1cpez_997{border:1px solid var(--color-border);background:var(--color-card);max-width:min(100%,420px);box-shadow:var(--shadow-sm);border-radius:14px;align-self:flex-start;align-items:flex-start;gap:12px;margin:4px 0 8px;padding:12px 14px;display:flex}._tutorPreparingCopy_1cpez_1011{gap:4px;min-width:0;display:grid}._tutorPreparingTitle_1cpez_1017{color:var(--color-text);align-items:center;gap:8px;margin:0;font-size:.98rem;font-weight:600;display:inline-flex}._tutorPreparingLead_1cpez_1027{color:var(--color-text-muted);margin:0;font-size:.85rem;line-height:1.4}._tutorDots_1cpez_1034{align-items:center;gap:4px;display:inline-flex}._tutorDots_1cpez_1034 span{background:var(--color-primary);border-radius:50%;width:6px;height:6px;animation:1.2s ease-in-out infinite _tutorDotPulse_1cpez_1}._tutorDots_1cpez_1034 span:nth-child(2){animation-delay:.2s}._tutorDots_1cpez_1034 span:nth-child(3){animation-delay:.4s}@keyframes _tutorDotPulse_1cpez_1{0%,80%,to{opacity:.35;transform:translateY(0)}40%{opacity:1;transform:translateY(-2px)}}._tutorPreparingBar_1cpez_1069{border-top:1px solid var(--color-border);background:var(--color-bg);color:var(--color-text);flex-shrink:0;align-items:center;gap:10px;padding:8px 12px;font-size:.9rem;font-weight:600;display:flex}._tutorPreparingBarLead_1cpez_1082{color:var(--color-text-muted);font-size:.82rem;font-weight:500}._tutorPreparingShimmer_1cpez_1088{background:linear-gradient(90deg, transparent, color-mix(in srgb, var(--color-primary) 45%, transparent), transparent);background-size:200% 100%;flex-shrink:0;height:3px;animation:1.4s linear infinite _tutorShimmer_1cpez_1}@keyframes _tutorShimmer_1cpez_1{0%{background-position:100% 0}to{background-position:-100% 0}}@media (prefers-reduced-motion:reduce){._tutorDots_1cpez_1034 span,._tutorPreparingShimmer_1cpez_1088{animation:none}._tutorDots_1cpez_1034 span{opacity:.8}}._chatPane_1cpez_672>._banner_1cpez_1121{border-left:none;border-right:none;border-radius:0;flex-shrink:0;margin:0}._citeTopic_1cpez_1129{overflow-wrap:anywhere;font-weight:600}._lessonStack_1cpez_1134{flex-direction:column;gap:12px;display:flex}._sectionBodyStack_1cpez_1140{flex-direction:column;gap:12px;margin-top:12px;display:flex}._sectionBody_1cpez_116{margin:12px 0 0;font-size:1.02rem;line-height:1.8}._sectionBody_1cpez_116 .katex-display,._practiceStem_1cpez_542 .katex-display,._lessonFeedbackText_1cpez_953 .katex-display{max-width:100%;overflow-x:auto}._sectionBodyStack_1cpez_1140 ._sectionBody_1cpez_116{margin-top:0}._lessonList_1cpez_1165{color:var(--color-text);margin:12px 0 0;padding-left:1.2rem;line-height:1.55}._lessonList_1cpez_1165 li+li{margin-top:8px}._lessonAnswerBox_1cpez_1176{border-radius:var(--radius-lg);background:var(--wash-success);border:1px solid #10b98159;margin-top:14px;padding:12px 14px}._diagramPlaceholder_1cpez_1184{text-align:center;color:var(--color-text-muted);border:1px dashed var(--color-border-strong);background:var(--color-panel-low);border-radius:16px;margin-top:14px;padding:28px 16px;font-size:13px}._lessonFlash_1cpez_1195{border:1px solid var(--color-border);width:100%;color:var(--color-text)}._lessonControls_1cpez_1201{border-top:1px solid var(--color-border);background:var(--color-panel-low);flex-wrap:wrap;justify-content:space-between;gap:8px;padding:8px 12px;display:flex}._lessonBuilding_1cpez_1211{flex:1;place-items:center;min-height:0;padding:28px 18px;display:grid}._lessonBuildingCard_1cpez_1219{width:min(100%,440px);position:relative;overflow:hidden}._lessonBuildingPulse_1cpez_1225{background:linear-gradient(110deg, transparent 30%, color-mix(in srgb, var(--color-primary) 8%, transparent) 50%, transparent 70%);pointer-events:none;background-size:200% 100%;animation:1.6s ease-in-out infinite _lessonShimmer_1cpez_1;position:absolute;inset:0}@keyframes _lessonShimmer_1cpez_1{0%{background-position:100% 0}to{background-position:-100% 0}}._stack_1cpez_1248{gap:12px;display:grid}._activityList_1cpez_1253{gap:10px;margin:0;padding:0;list-style:none;display:grid}._pageTitle_1cpez_1261{font-family:var(--font-display);margin:2px 0 6px;font-size:clamp(1.25rem,2.2vw,1.7rem)}._fieldBlock_1cpez_479{color:var(--color-text-muted);flex-direction:column;gap:4px;font-size:.88rem;display:flex}._fieldBlock_1cpez_479 select,._fieldBlock_1cpez_479 input{background:var(--color-panel-low);border:1px solid var(--color-border);width:100%;max-width:100%;color:var(--color-text);border-radius:10px;min-height:36px;padding:8px 10px}._optionStack_1cpez_574{grid-template-columns:1fr 1fr;gap:8px;margin-top:14px;display:grid}._optionBtn_1cpez_581{text-align:left;border:1px solid var(--color-border);background:var(--color-panel-low);color:var(--color-text);cursor:pointer;overflow-wrap:anywhere;word-break:break-word;border-radius:12px;width:100%;min-height:44px;padding:12px 14px}._optionBtn_1cpez_581:hover:not(:disabled){border-color:var(--line-primary)}._feedbackBlock_1cpez_1312{border-top:1px solid var(--color-border);gap:6px;margin-top:16px;padding-top:12px;display:grid}._cbtPage_1cpez_1320{flex-direction:column;gap:8px;height:100%;min-height:0;display:flex;overflow:hidden}._cbtTopBar_1cpez_1329{border:1px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-card);box-shadow:var(--shadow-sm);z-index:20;flex-wrap:wrap;flex-shrink:0;justify-content:space-between;align-items:center;gap:6px 10px;padding:6px 10px;display:flex;position:sticky;top:0}._cbtTopLeft_1cpez_1346{gap:0;font-size:.82rem;line-height:1.25;display:grid}._cbtTopLeft_1cpez_1346 strong{font-family:var(--font-display);letter-spacing:.02em;font-size:.92rem}._cbtTopActions_1cpez_1359{flex-wrap:wrap;align-items:center;gap:4px;display:flex}._cbtTopActions_1cpez_1359 button{min-height:32px;padding:4px 10px;font-size:.85rem}._cbtTimer_1cpez_1372{font-variant-numeric:tabular-nums;color:var(--color-gold-ink);background:var(--wash-gold);border:1px solid var(--line-gold);border-radius:8px;align-items:center;gap:6px;padding:4px 8px;font-size:.92rem;font-weight:700;display:inline-flex}._cbtTimer_1cpez_1372[data-urgent=true]{color:var(--color-error);background:var(--wash-error);border-color:color-mix(in srgb, var(--color-error) 40%, white);animation:1s ease-in-out infinite _cbtPulse_1cpez_1}@keyframes _cbtPulse_1cpez_1{0%,to{opacity:1}50%{opacity:.72}}@media (prefers-reduced-motion:reduce){._cbtTimer_1cpez_1372[data-urgent=true],._lessonBuildingPulse_1cpez_1225{animation:none}}._cbtNotice_1cpez_1410{border:1px solid var(--line-gold);background:var(--wash-gold);color:var(--color-text-muted);border-radius:10px;margin:0;padding:10px 12px;font-size:.9rem}._cbtShell_1cpez_1420{flex:1;grid-template-columns:minmax(160px,210px) minmax(0,1fr);align-items:stretch;gap:10px;min-height:0;display:grid;overflow:hidden}._cbtSide_1cpez_1430{border:1px solid var(--color-border);border-radius:var(--radius-lg);background:var(--color-panel);min-height:0;padding:10px;overflow:auto}._cbtPalette_1cpez_1439{grid-template-columns:repeat(5,1fr);gap:6px;display:grid}._cbtPalBtn_1cpez_1445{aspect-ratio:1;border:1px solid var(--color-border);background:var(--color-panel-low);color:var(--color-text-muted);cursor:pointer;border-radius:8px;font-size:.88rem;font-weight:600}._cbtPalBtn_1cpez_1445:hover{border-color:var(--line-primary)}._cbtPalBtnActive_1cpez_1460{border-color:var(--color-primary);color:var(--color-primary-soft);background:var(--wash-primary)}._cbtPalBtnAnswered_1cpez_1466{background:var(--wash-success);color:var(--color-success)}._cbtPalBtnFlagged_1cpez_1471{box-shadow:inset 0 0 0 1px #fbbf24}._cbtLegend_1cpez_1475{color:var(--color-text-muted);gap:6px;margin-top:12px;font-size:.75rem;display:grid}._cbtLegend_1cpez_1475 span{align-items:center;gap:6px;display:inline-flex}._cbtLegend_1cpez_1475 i{border-radius:3px;width:10px;height:10px;display:inline-block}._dotAnswered_1cpez_1496{background:#22c55eb3}._dotFlagged_1cpez_1500{background:#fbbf24}._dotCurrent_1cpez_299{background:var(--color-primary)}._cbtMain_1cpez_1508{min-width:0;min-height:0;overflow:auto}._cbtQuestionCard_1cpez_1514{gap:12px;display:grid}._cbtPassage_1cpez_1519{border:1px solid var(--color-border);background:var(--color-panel-low);border-radius:12px;max-height:200px;padding:14px 16px;overflow:auto}._cbtPassage_1cpez_1519 p{white-space:pre-wrap;margin:8px 0 0;font-size:1rem;line-height:1.65}._cbtStem_1cpez_1535{margin:0;font-size:1.12rem;font-weight:600;line-height:1.55}._cbtFigure_1cpez_1542{gap:6px;margin:0;display:grid}._cbtFigure_1cpez_1542 img{object-fit:contain;border:1px solid var(--color-border);background:var(--color-card);border-radius:10px;width:min(100%,520px);max-height:220px}._cbtFigure_1cpez_1542 figcaption{color:var(--color-text-muted);font-size:.88rem}._cbtNavRow_1cpez_1562{justify-content:space-between;gap:8px;margin-top:8px;display:flex}._cbtMeta_1cpez_1569{flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:12px;display:flex}._chipRow_1cpez_1577{overflow-wrap:anywhere;flex-wrap:wrap;gap:8px;display:flex}._chip_1cpez_152{border:1px solid var(--color-border);background:var(--color-panel-low);color:var(--color-text-muted);cursor:pointer;white-space:normal;overflow-wrap:anywhere;border-radius:999px;max-width:100%;padding:5px 10px;font-size:.8rem;line-height:1.25}._chipActive_1cpez_1598{border-color:var(--color-primary);color:var(--color-primary-soft);background:var(--wash-primary)}._segmentRow_1cpez_1604{flex-wrap:wrap;gap:8px;display:flex}._segmentRow_1cpez_1604 ._chip_1cpez_152{text-align:center;flex:140px}._suggestRow_1cpez_1615{grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px;display:grid}._suggestChip_1cpez_1621{border:1px solid var(--color-border);background:var(--color-card);width:100%;min-height:56px;color:var(--color-text);cursor:pointer;text-align:left;border-radius:16px;align-items:center;gap:10px;padding:10px 12px 10px 8px;display:flex}._suggestChip_1cpez_1621:disabled{opacity:.6;cursor:wait}._suggestChip_1cpez_1621 strong{overflow-wrap:anywhere;font-size:.9rem;font-weight:600;display:block}._suggestChip_1cpez_1621 span{color:var(--color-text-muted);overflow-wrap:anywhere;font-size:.78rem;line-height:1.35;display:block}._diagramFrame_1cpez_1656{border:1px dashed var(--color-border-strong);background:var(--color-panel-low);border-radius:12px;margin-top:12px;padding:12px}._diagramFrame_1cpez_1656 svg{width:100%;height:auto;display:block}._heroNaza_1cpez_1670{pointer-events:none;position:absolute;bottom:0;right:12px}._learnHub_1cpez_1677{grid-template-columns:minmax(0,1.35fr) minmax(220px,.85fr);align-items:start;gap:clamp(10px,1.4vw,14px);display:grid}._learnPrimary_1cpez_1684,._learnAside_1cpez_1685{flex-direction:column;gap:10px;min-width:0;display:flex}._learnShell_1cpez_21{grid-template-columns:minmax(160px,200px) minmax(0,1fr);align-items:stretch;gap:10px;display:grid}._learnRail_1cpez_1699{gap:6px;display:grid}._learnRailBtn_1cpez_1704{text-align:left;border:1px solid var(--color-border);background:var(--color-panel-low);color:var(--color-text);cursor:pointer;overflow-wrap:anywhere;border-radius:10px;padding:10px 12px}._learnRailBtn_1cpez_1704:disabled{opacity:.55;cursor:wait}._learnRailBtnActive_1cpez_1720{border-color:var(--color-primary);background:var(--wash-primary);color:var(--color-primary-soft)}._banner_1cpez_1121{border:1px solid var(--line-gold);background:var(--wash-gold);color:var(--color-text);border-radius:12px;padding:12px 14px}@media (width<=1100px){._tutorLayout_1cpez_660{grid-template-rows:minmax(0,1fr) auto;grid-template-columns:1fr;height:100%}._chatPane_1cpez_672{grid-row:1;height:auto;min-height:0;max-height:none}._sourcesPane_1cpez_762{grid-row:2;height:auto;max-height:140px}}@media (width<=960px){._learnHub_1cpez_1677,._hero_1cpez_27,._grid2_1cpez_89,._learnShell_1cpez_21,._cbtShell_1cpez_1420{grid-template-columns:1fr}._cbtSide_1cpez_1430,._cbtTopBar_1cpez_1329{position:static}._heroNaza_1cpez_1670{display:none}._heroCard_1cpez_34{padding-right:clamp(12px,2vw,20px)}}._examStemNote_1cpez_1790{color:var(--color-text-muted);margin:8px 0 0;font-size:.9rem}@media (width<=720px){._courseActions_1cpez_130{flex-direction:column;align-items:stretch}._courseActions_1cpez_130 a,._courseActions_1cpez_130 button{width:100%}._pageFill_1cpez_13{height:100%;min-height:0;max-height:100%}._tutorLayout_1cpez_660{height:100%;min-height:0}._chatPane_1cpez_672{min-height:0}}@media (width<=640px){._heroCard_1cpez_34{min-height:0}._flashcard_1cpez_843{min-height:140px;font-size:16px}._cbtPalette_1cpez_1439{grid-template-columns:repeat(auto-fill,minmax(36px,1fr))}._composer_1cpez_742,._chatHeader_1cpez_685,._lessonControls_1cpez_1201,._cbtNavRow_1cpez_1562{flex-wrap:wrap}._pageTitle_1cpez_1261{font-size:1.25rem}}._speakable_1x01m_1{align-items:flex-start;gap:var(--space-2);display:flex}._speakableBody_1x01m_7{flex:1;min-width:0}._speak_1x01m_1{justify-content:flex-end;align-items:center;gap:var(--space-1);flex-wrap:wrap;flex-shrink:0;display:inline-flex}._speakBtn_1x01m_21{border:1px solid var(--color-border);border-radius:var(--radius-full);background:var(--color-card-high);width:32px;height:32px;color:var(--color-text-muted);cursor:pointer;transition:color .15s var(--ease), border-color .15s var(--ease), background .15s var(--ease);place-items:center;padding:0;display:inline-grid}._speakBtn_1x01m_21:hover{color:var(--color-text);border-color:var(--color-border-strong)}._speakBtn_1x01m_21:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px}._speakBtn_1x01m_21[data-state=playing],._speakBtn_1x01m_21[data-state=paused],._speakBtn_1x01m_21[data-state=loading]{color:var(--color-primary-soft);border-color:var(--color-primary);background:var(--wash-primary)}._speakError_1x01m_56{text-align:right;max-width:22ch;color:var(--color-error);flex-basis:100%;font-size:.78rem;line-height:1.3}._spin_1x01m_65{transform-origin:12px 12px;animation:.9s linear infinite _speak-spin_1x01m_1}@keyframes _speak-spin_1x01m_1{to{transform:rotate(360deg)}}@media (prefers-reduced-motion:reduce){._spin_1x01m_65{animation-duration:2.4s}}:root{--color-primary:#2b9cd8;--color-primary-hover:#1f89c2;--color-primary-soft:#176b96;--color-primary-container:#e8f5fb;--color-gold:#f7aa1e;--color-gold-hover:#e09810;--color-gold-ink:#8a5c08;--color-secondary:#3a424c;--color-secondary-soft:#5c6670;--color-accent:var(--color-gold-ink);--color-success:#1d7a4a;--color-warning:#f7aa1e;--color-error:#c4453c;--color-error-hover:#a83830;--color-tertiary:#f7aa1e;--color-bg:#fff;--color-bg-elevated:#fff;--color-panel:#fafafa;--color-panel-low:#f5f6f7;--color-card:#fff;--color-card-high:#fff;--color-border:#1a1d2114;--color-border-strong:#1a1d2124;--color-margin:transparent;--wash-primary:color-mix(in srgb, var(--color-primary) 12%, white);--line-primary:color-mix(in srgb, var(--color-primary) 48%, white);--wash-gold:color-mix(in srgb, var(--color-gold) 16%, white);--line-gold:color-mix(in srgb, var(--color-gold) 50%, white);--wash-success:color-mix(in srgb, var(--color-success) 12%, white);--wash-error:color-mix(in srgb, var(--color-error) 10%, white);--color-ink:#1a1d21;--color-text:var(--color-ink);--color-text-muted:#5e6770;--color-text-dim:#8b939c;--color-on-primary:#fff;--color-on-gold:#1a1d21;--color-scrim:#16181c5c;--font-display:"Libre Baskerville", "Palatino Linotype", serif;--font-body:"Outfit", system-ui, sans-serif;--font-mono:"IBM Plex Mono", ui-monospace, monospace;--space-1:4px;--space-2:8px;--space-3:12px;--space-4:16px;--space-5:20px;--space-6:24px;--space-7:32px;--space-8:48px;--radius-sm:8px;--radius-md:10px;--radius-lg:12px;--radius-xl:16px;--radius-full:9999px;--shadow-sm:0 1px 2px #1a1d210d;--shadow-md:0 12px 32px #1a1d2114;--shadow-glow:none;--sidebar-w:220px;--topbar-h:56px;--context-w:260px;--main-pad:clamp(16px, 2.2vw, 28px);--bottom-nav-h:60px;--ease:cubic-bezier(.22, 1, .36, 1);--dur:.16s}*,:before,:after{box-sizing:border-box}html{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;width:100%;height:100%;min-height:100%;max-height:100%;overflow:hidden}html,body,#root{width:100%;min-width:100%;max-width:100%}body,#root{height:100%;min-height:100%;max-height:100%;overflow:hidden}body{font-family:var(--font-body);color:var(--color-text);background:var(--color-bg);-webkit-font-smoothing:antialiased;margin:0;font-size:16.5px;line-height:1.5}h1,h2,h3,h4{font-family:var(--font-display);letter-spacing:-.01em;color:var(--color-text);margin:0}p{margin:0}a{color:inherit;text-decoration:none}a:where(:not([class])){color:var(--color-primary-soft);text-underline-offset:3px}a:where(:not([class])):hover{text-decoration:underline}button,input,textarea,select{font:inherit}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-thumb{background:#1a1d212e;border-radius:4px}::-webkit-scrollbar-track{background:0 0}:focus-visible,button:focus-visible,a:focus-visible,[role=radio]:focus-visible,[role=option]:focus-visible,[role=tab]:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px}input:focus-visible,textarea:focus-visible,select:focus-visible{border-color:var(--color-primary);box-shadow:0 0 0 3px color-mix(in srgb, var(--color-primary) 22%, transparent);outline:none}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}