:root,.mk-brand{--mk-surface-canvas: #ffffff;--mk-surface-panel: #f4f6f5;--mk-surface-selected: #e7efed;--mk-content-primary: #252e34;--mk-content-muted: #566065;--mk-content-inverse: #ffffff;--mk-action-content: #ffffff;--mk-action-soft-content: #252e34;--mk-action-soft: var(--mk-color-bright-green);--mk-action-soft-hover: var(--mk-color-bright-lightblue);--mk-action-primary: #42646d;--mk-action-primary-hover: #324e55;--mk-border-default: #ccd3d6;--mk-border-width: 1px;--mk-focus-ring: var(--mk-action-primary);--mk-focus-width: 3px;--mk-focus-offset: 3px;--mk-status-error: #b3261e;--mk-color-bright-lightblue: #86bdea;--mk-color-bright-yellow: #ffca8a;--mk-color-bright-red: #f99a98;--mk-color-bright-green: #93c1a2;--mk-typography-family: "Work Sans Variable", "Work Sans", "Segoe UI", sans-serif;--mk-typography-body-size: 1rem;--mk-typography-small-size: var(--mk-typography-body-size);--mk-typography-caption-size: .75rem;--mk-typography-metadata-size: .875rem;--mk-typography-display-size: 2.75rem;--mk-typography-display-compact-size: 2rem;--mk-typography-section-size: 1.625rem;--mk-typography-subheading-size: 1.25rem;--mk-typography-heading-weight: 500;--mk-typography-body-weight: 400;--mk-typography-body-line-height: 1.6;--mk-typography-heading-line-height: 1.2;--mk-typography-display-tracking: -1.2px;--mk-typography-kicker-tracking: 1.6px;--mk-spacing-unit: 8px;--mk-spacing-gutter-compact: 24px;--mk-radius-control: 6px;--mk-control-min-height: 44px;--mk-radius-panel: 12px}:root{--mk-site-content-max-width: 1100px;--mk-site-gutter: 48px;--mk-brand-width: 200px;--mk-header-background: #ffffff;--mk-header-text: #252e34;--mk-header-border: #ccd3d6;--mk-header-navigation-active: #e7efed;--mk-header-control-hover: rgb(147 193 162 / 4%);--mk-header-control-border: #ccd3d6;--mk-header-control-hover-border: #93c1a2;--mk-header-focus-ring: #42646d;--mk-header-menu-background: #ffffff;--mk-header-menu-text: #252e34;--mk-header-menu-border: #ccd3d6;--mk-header-menu-hover: #f4f6f5;--mk-header-menu-selected: rgb(147 193 162 / 8%);--mk-header-menu-selected-hover: rgb(147 193 162 / 12%);--mk-header-menu-focus: rgb(0 0 0 / 12%);--mk-header-menu-selected-focus: rgb(147 193 162 / 20%);--mk-footer-background: #dddddd;--mk-footer-title: #125f8e;--mk-footer-link: #486744;--mk-footer-action-hover: rgb(147 193 162 / 4%);--mk-footer-bottom-text: #853d52;--mk-footer-border: #ccd3d6;--mk-footer-focus-ring: #42646d;--mk-footer-item-line-height: 24px}.mk-navigation,.mk-primary-bottom{--nav-background: var(--mk-header-background);--nav-content: var(--mk-header-text);--nav-border: var(--mk-header-border);--nav-selected: var(--mk-header-navigation-active);--nav-hover: var(--mk-header-menu-hover);--nav-focus: var(--mk-header-focus-ring);color:var(--nav-content);background:var(--nav-background)}.mk-navigation{position:sticky;top:0;z-index:1100;flex-shrink:0;border-bottom:1px solid var(--nav-border)}.mk-navigation-bar{max-width:var(--mk-site-content-max-width);margin-inline:auto;padding:max(12px,env(safe-area-inset-top)) max(var(--mk-site-gutter),env(safe-area-inset-right)) 12px max(var(--mk-site-gutter),env(safe-area-inset-left));display:flex;align-items:center;gap:20px}.mk-navigation-brand{display:flex;align-items:flex-start;gap:4px;min-width:0;margin-right:auto;color:inherit;text-decoration:none}.mk-navigation-brand img{width:var(--mk-brand-width, 200px);max-width:100%;min-width:0;height:auto}.mk-navigation-brand sup{font-size:var(--mk-typography-caption-size);line-height:1;flex-shrink:0;white-space:nowrap}.mk-navigation .mk-navigation-toggle{width:48px;height:48px;flex-shrink:0;color:inherit}.mk-navigation-context,.mk-primary-header{display:flex;align-items:center;gap:4px;flex-shrink:0}.mk-navigation-context{padding-left:16px}.mk-navigation-context[data-authenticated=true]{border-left:0;padding-left:0}.mk-navigation .mk-navigation-link,.mk-primary-bottom .mk-navigation-link{color:inherit;text-decoration:none;font-size:var(--mk-typography-body-size);line-height:1.4;min-height:48px;padding:8px 10px;border-radius:var(--mk-radius-control)}.mk-navigation-link[aria-current=page]{background:var(--nav-selected);font-weight:var(--mk-typography-heading-weight);text-decoration:underline!important;text-underline-offset:5px}.mk-navigation-profile{display:flex;align-items:center;justify-content:center;gap:8px;min-width:48px;min-height:48px;max-width:180px;flex-shrink:0;padding:8px 10px;border-radius:var(--mk-radius-control);color:inherit;text-decoration:none}.mk-navigation-profile>span:last-child{display:none}.mk-navigation-panel{position:fixed;top:var(--navigation-bottom);bottom:0;left:0;right:0;background:var(--nav-background);overflow-y:auto;overscroll-behavior:contain;padding:16px 16px max(24px,env(safe-area-inset-bottom))}.mk-navigation-panel nav{display:flex;flex-direction:column;gap:8px}.mk-navigation-panel .mk-navigation-link{width:100%;justify-content:flex-start;min-height:60px;padding:16px;font-size:var(--mk-typography-body-size);text-align:left;overflow-wrap:anywhere}.mk-navigation-group.MuiAccordion-root{margin:0;min-width:0;color:inherit;background:transparent;border-top:1px solid var(--nav-border)}.mk-navigation-group.MuiAccordion-root:before{display:none}.mk-navigation-group .MuiAccordionSummary-content{margin:0}.mk-navigation-group .MuiAccordionSummary-expandIconWrapper{color:inherit}.mk-navigation-group .MuiAccordionDetails-root{display:flex;flex-direction:column;gap:8px;padding:0 0 8px 16px}.mk-primary-bottom{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:4px;border-top:1px solid var(--nav-border);padding:6px max(8px,env(safe-area-inset-right)) max(6px,env(safe-area-inset-bottom)) max(8px,env(safe-area-inset-left))}.mk-site-layout,.mk-site-body{display:flex;flex-direction:column}.mk-site-layout{min-height:var(--mk-site-viewport-height, 100dvh)}.mk-site-body{flex:1 0 auto;scroll-padding-top:calc(var(--mk-site-header-height, 0px) + 8px);scroll-padding-bottom:12px}.mk-site-layout[data-bottom-navigation=true]{height:var(--mk-site-viewport-height, 100dvh);min-height:0;overflow:hidden}.mk-site-layout[data-bottom-navigation=true]>.mk-site-body{flex:1;min-height:0;overflow-y:auto;overflow-wrap:anywhere}.mk-site-layout[data-menu-open=true]>.mk-site-body{overflow:hidden}.mk-site-bottom-slot{flex-shrink:0;width:100%;max-height:50%;overflow-y:auto}.mk-site-layout[data-compact-bar=true] .mk-primary-bottom{padding-block:2px max(2px,env(safe-area-inset-bottom))}.mk-site-layout[data-compact-bar=true] .mk-primary-bottom .mk-navigation-link>span{display:none}.mk-site-layout[data-short=true] .mk-navigation:not([data-open=true]){position:static}.mk-site-layout[data-short=true]>.mk-site-body{scroll-padding-top:12px}.mk-primary-bottom .mk-navigation-link{display:flex;flex-direction:column;gap:2px;padding:6px 4px;font-size:var(--mk-typography-body-size);min-width:0}.mk-primary-bottom .mk-navigation-link>span{max-width:100%;overflow-wrap:anywhere}.mk-navigation :focus-visible,.mk-primary-bottom :focus-visible{outline:3px solid var(--nav-focus);outline-offset:-3px}@media(hover:hover){.mk-navigation-link:hover,.mk-navigation-toggle:hover,.mk-navigation-profile:hover{background:var(--nav-hover)}}.mk-navigation[data-compact=false] .mk-navigation-bar{flex-wrap:wrap}.mk-navigation[data-compact=false] .mk-navigation-brand{flex-shrink:0}.mk-navigation[data-compact=true] .mk-navigation-bar{gap:8px;max-width:none;padding:max(8px,env(safe-area-inset-top)) max(16px,env(safe-area-inset-right)) 8px max(16px,env(safe-area-inset-left))}.mk-navigation[data-compact=true] .mk-navigation-brand img{width:160px}.mk-navigation{container:navigation / inline-size}@container navigation (width < 600px){.mk-navigation-bar{padding-inline:max(8px,env(safe-area-inset-left)) max(8px,env(safe-area-inset-right));padding-bottom:2px!important;padding-top:max(6px,env(safe-area-inset-top))!important}}.mk-navigation[data-compact=false] .mk-navigation-profile>span:last-child{display:inline;min-width:0}@media not (min-height:600px){.mk-navigation:not([data-open=true]){position:static}}.mk-navigation .mk-navigation-avatar{width:32px;height:32px;font-family:var(--mk-typography-family);font-size:var(--mk-typography-small-size);font-weight:var(--mk-typography-body-weight);background:var(--nav-selected);color:var(--nav-content)}.mk-navigation-nickname{font-size:var(--mk-typography-small-size);line-height:var(--mk-typography-body-line-height);font-weight:var(--mk-typography-body-weight);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.mk-site-footer{flex-shrink:0;background:var(--mk-footer-background);border-top:1px solid var(--mk-footer-border);font-family:var(--mk-typography-family);font-weight:var(--mk-typography-body-weight);line-height:var(--mk-typography-body-line-height)}.mk-site-footer-content{max-width:var(--mk-site-content-max-width);margin-inline:auto;padding:24px var(--mk-site-gutter) 18px}.mk-site-footer-columns{display:grid;grid-template-columns:1.05fr .8fr 1.5fr;gap:24px}.mk-site-footer h2{margin:0 0 8px;color:var(--mk-footer-title);font-size:var(--mk-typography-body-size);font-weight:var(--mk-typography-heading-weight);line-height:inherit}.mk-site-footer-links{display:flex;flex-direction:column;align-items:flex-start}.mk-site-footer a{display:inline-flex;align-items:center;min-height:var(--mk-footer-item-line-height);line-height:var(--mk-footer-item-line-height);color:var(--mk-footer-link);font-size:var(--mk-typography-small-size);text-decoration:none;text-underline-offset:4px;overflow-wrap:anywhere}.mk-site-footer a:hover{text-decoration:underline}.mk-site-footer p{margin:24px 0 0;font-size:var(--mk-typography-metadata-size);color:var(--mk-footer-bottom-text)}.mk-site-footer :focus-visible{outline:var(--mk-focus-width) solid var(--mk-footer-focus-ring);outline-offset:var(--mk-focus-offset)}:root{--mk-explainer-surface: #f0f7fc;--mk-explainer-personal-surface: #f0f6f2;--mk-spacing-inline: 16px;--mk-spacing-section: 24px;--mk-spacing-grid: 18px;--mk-spacing-columns: 38px;--mk-spacing-gutter: 48px;--mk-spacing-page-gutter: var(--mk-spacing-gutter-compact);--mk-spacing-hero-top: 24px;--mk-spacing-page-bottom: 48px;--mk-layout-content-max-width: 1100px;--mk-layout-page-max-width: var(--mk-layout-content-max-width);--mk-layout-text-max-width: 680px;--mk-panel-padding: var(--mk-spacing-section);--mk-illustration-min-height: 180px}@media(min-width:1100px){:root{--mk-spacing-page-gutter: var(--mk-spacing-gutter)}}html{scroll-padding-top:calc(var(--mk-site-header-height, 0px) + var(--mk-spacing-inline));scroll-padding-bottom:var(--mk-spacing-inline)}@media not (min-height:600px){html{scroll-padding-top:var(--mk-spacing-inline)}}@font-face{font-family:Work Sans Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/assets/work-sans-vietnamese-wght-normal-BKsN3ITN.woff2) format("woff2-variations");unicode-range:U+0102-0103,U+0110-0111,U+0128-0129,U+0168-0169,U+01A0-01A1,U+01AF-01B0,U+0300-0301,U+0303-0304,U+0308-0309,U+0323,U+0329,U+1EA0-1EF9,U+20AB}@font-face{font-family:Work Sans Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/assets/work-sans-latin-ext-wght-normal-B5dZ8C4S.woff2) format("woff2-variations");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,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:Work Sans Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/assets/work-sans-latin-wght-normal-Bl-S9Xys.woff2) format("woff2-variations");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}._overview_jlz6r_1{padding:var(--mk-spacing-section);border-radius:var(--mk-radius-panel);background:var(--mk-explainer-surface);margin-bottom:var(--mk-spacing-gutter)}._overviewHeading_jlz6r_8{text-align:center}._overviewHeading_jlz6r_8 h2{margin-bottom:var(--mk-spacing-unit)}._flow_jlz6r_16{list-style:none;padding:0;margin:var(--mk-spacing-section) 0;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:var(--mk-spacing-grid)}._flow_jlz6r_16 li{position:relative;min-width:0}._flow_jlz6r_16 li:not(:last-child):after{content:"→";position:absolute;top:58px;right:-17px;color:var(--mk-content-muted);font-size:var(--mk-typography-section-size)}._flow_jlz6r_16 h3{margin:var(--mk-spacing-unit) 0}._flow_jlz6r_16 p{margin:0;color:var(--mk-content-muted);font-size:var(--mk-typography-small-size)}._stepNumber_jlz6r_49{font-size:var(--mk-typography-caption-size);letter-spacing:var(--mk-typography-kicker-tracking);color:var(--mk-content-muted)}._art_jlz6r_55{max-width:160px;margin:0 auto var(--mk-spacing-inline);color:var(--mk-content-primary)}._art_jlz6r_55 svg{display:block;width:100%;fill:none;stroke:currentColor;stroke-width:2.5;stroke-linecap:round;stroke-linejoin:round}._artText_jlz6r_71{fill:currentColor;stroke:none;font-size:26px;font-family:var(--mk-typography-family);font-weight:var(--mk-typography-heading-weight)}._blue_jlz6r_79{fill:var(--mk-color-bright-lightblue)}._yellow_jlz6r_82{fill:var(--mk-color-bright-yellow)}._coral_jlz6r_85{fill:var(--mk-color-bright-red)}._green_jlz6r_88{fill:var(--mk-color-bright-green)}._feedback_jlz6r_92{display:flex;align-items:center;justify-content:center;gap:var(--mk-spacing-inline);margin:0;padding-top:var(--mk-spacing-inline);border-top:var(--mk-border-width) solid var(--mk-border-default);color:var(--mk-content-muted);font-size:var(--mk-typography-small-size)}._feedback_jlz6r_92 span{font-size:var(--mk-typography-section-size)}._variation_jlz6r_108{border-top:none}._kicker_jlz6r_112{color:var(--mk-content-muted);margin-bottom:var(--mk-spacing-inline)}._example_jlz6r_117{padding:var(--mk-spacing-section);text-align:center;border:var(--mk-border-width) solid var(--mk-border-default);border-radius:var(--mk-radius-panel)}._equation_jlz6r_124{display:flex;align-items:center;justify-content:center;gap:var(--mk-spacing-unit);margin:var(--mk-spacing-section) 0;font-size:var(--mk-typography-display-compact-size);font-weight:var(--mk-typography-heading-weight)}._equation_jlz6r_124>span{min-width:0}._firstNumber_jlz6r_138,._secondNumber_jlz6r_139,._answer_jlz6r_140{display:grid;place-items:center;width:64px;height:64px;border-radius:var(--mk-radius-panel)}._firstNumber_jlz6r_138{background:var(--mk-color-bright-lightblue)}._secondNumber_jlz6r_139{background:var(--mk-color-bright-yellow)}._answer_jlz6r_140{background:var(--mk-color-bright-green)}._personal_jlz6r_158{display:flex;align-items:flex-start;gap:var(--mk-spacing-section);margin-top:var(--mk-spacing-section);padding:var(--mk-spacing-section);background:var(--mk-explainer-personal-surface);border-radius:var(--mk-radius-panel)}._personal_jlz6r_158 h2{margin-bottom:var(--mk-spacing-inline)}._personalSymbol_jlz6r_172{display:grid;place-items:center;flex-shrink:0;width:56px;height:56px;border-radius:50%;background:var(--mk-color-bright-green);font-size:var(--mk-typography-display-compact-size)}@media(max-width:899.95px){._flow_jlz6r_16{grid-template-columns:repeat(2,minmax(0,1fr));row-gap:var(--mk-spacing-section)}._flow_jlz6r_16 li:not(:last-child):after{content:none}}@media(max-width:599.95px){._flow_jlz6r_16{grid-template-columns:minmax(0,1fr)}._flow_jlz6r_16 li{display:grid;grid-template-columns:80px minmax(0,1fr);column-gap:var(--mk-spacing-inline)}._art_jlz6r_55{grid-row:span 3;align-self:center;margin:0}._flow_jlz6r_16 h3{margin-top:0}._personal_jlz6r_158{flex-direction:column}}.mk-privacy-purposes{width:100%;border-collapse:collapse;text-align:left;color:var(--mk-content-primary)}.mk-privacy-purposes caption{text-align:left;font-weight:500;padding-block:1rem}.mk-privacy-purposes th,.mk-privacy-purposes td{border-bottom:1px solid var(--mk-border-default);padding:1rem 0;vertical-align:top;width:50%;font-weight:400}.mk-privacy-purposes th{padding-right:1.5rem}.mk-privacy-purposes thead th,.mk-privacy-purposes strong{font-weight:500}.mk-privacy-purposes span{display:block;margin-top:.5rem}@media(max-width:599px){.mk-privacy-purposes th,.mk-privacy-purposes td{padding-right:.75rem}}@media print{body:has(.mk-privacy-notice) .mk-site-layout,body:has(.mk-privacy-notice) .mk-site-body{display:block;height:auto;min-height:0;overflow:visible}body:has(.mk-privacy-notice) .mk-navigation,body:has(.mk-privacy-notice) .mk-site-bottom-slot,body:has(.mk-privacy-notice) footer{display:none}.mk-privacy-notice{color:#000}.mk-privacy-notice h2{break-after:avoid}.mk-privacy-purposes tr{break-inside:avoid}}