.lang-switch{position:relative}.lang-switch__toggle{align-items:center;gap:var(--space-1);border-radius:var(--radius-pill);min-height:44px;color:var(--ink);font-size:var(--step--1);cursor:pointer;padding:0 .6rem;font-weight:700;list-style:none;display:inline-flex}.lang-switch__toggle::-webkit-details-marker{display:none}.lang-switch__toggle:hover{color:var(--rest)}.lang-switch__icon{flex:none}.lang-switch__list{z-index:60;min-width:11rem;padding:var(--space-2);border:1px solid var(--rule);border-radius:var(--radius);background:var(--surface);box-shadow:var(--shadow-pop);margin:0;list-style:none;display:grid;position:absolute;inset-block-start:calc(100% + var(--space-1));inset-inline-end:0}.lang-switch__list a{min-height:44px;padding-inline:var(--space-3);border-radius:calc(var(--radius) - 4px);color:var(--ink);font-family:var(--font-reading);align-items:center;text-decoration:none;display:flex}.lang-switch__list a:hover{background:var(--rest-soft);color:var(--rest)}.lang-switch__list a[aria-current=true]{color:var(--rest);font-weight:700}@container site-header (width<16em){.lang-switch__toggle{justify-content:center;width:100%;min-height:48px}.lang-switch__list{min-width:0;box-shadow:none;position:static}}.site-footer .footer-languages{grid-column:1/-1}.site-footer .footer-languages ul{gap:0 var(--space-5);flex-wrap:wrap;display:flex}.site-footer .footer-languages a{font-family:var(--font-reading)}.fallback-notice{padding:var(--space-2) var(--space-4);border-radius:var(--radius);background:var(--strain-soft);color:var(--ink);font-size:var(--step--1);margin-block-start:var(--space-4);line-height:1.5}.translation-note{padding:var(--space-2) var(--space-4);border-inline-start:3px solid var(--rest);background:var(--rest-soft);color:var(--ink);font-size:var(--step--1);line-height:1.5}.lang-suggest{justify-content:center;align-items:center;gap:var(--space-3);padding:var(--space-1) var(--gutter);border-block-end:1px solid var(--rule);background:var(--rest-soft);font-size:var(--step--1);display:flex}.lang-suggest a{color:var(--rest);font-weight:700}.lang-suggest__close{min-width:44px;min-height:44px;color:var(--ink);font-size:var(--step-1);cursor:pointer;background:0 0;border:0}@font-face{font-family:PT Sans Cyrillic;font-style:normal;font-weight:400;font-display:swap;src:url(/_astro/pt-sans-cyrillic-400-normal.BgFH0IXl.woff2)format("woff2");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116;size-adjust:99.2%;ascent-override:99.2%;descent-override:31.9%;line-gap-override:0%}@font-face{font-family:PT Sans Cyrillic;font-style:normal;font-weight:700;font-display:swap;src:url(/_astro/pt-sans-cyrillic-700-normal.TNhnPAH_.woff2)format("woff2");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116;size-adjust:99.2%;ascent-override:99.2%;descent-override:31.9%;line-gap-override:0%}@font-face{font-family:PT Sans Cyrillic;font-style:italic;font-weight:400;font-display:swap;src:url(/_astro/pt-sans-cyrillic-400-italic.Bz2mnFoX.woff2)format("woff2");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116;size-adjust:99.2%;ascent-override:99.2%;descent-override:31.9%;line-gap-override:0%}@font-face{font-family:PT Sans Cyrillic;font-style:italic;font-weight:700;font-display:swap;src:url(/_astro/pt-sans-cyrillic-700-italic.w98atgE-.woff2)format("woff2");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116;size-adjust:99.2%;ascent-override:99.2%;descent-override:31.9%;line-gap-override:0%}@font-face{font-family:PT Sans Cyrillic Fallback;src:local(Arial),local(ArialMT),local(Liberation Sans),local(Arimo),local(Roboto);unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116;size-adjust:93.1%;ascent-override:105.7%;descent-override:33.9%;line-gap-override:0%}html:lang(ru){--font-reading:"Atkinson Hyperlegible Next", "PT Sans Cyrillic", "PT Sans Cyrillic Fallback", "Atkinson Hyperlegible Fallback", system-ui, sans-serif}html:lang(ja){--font-display:"JetBrains Mono Variable", "JetBrains Mono Fallback", "Hiragino Sans", "Hiragino Kaku Gothic ProN", "BIZ UDGothic", "Meiryo", "Yu Gothic", "Noto Sans JP", "Noto Sans CJK JP", ui-monospace, monospace;--font-text:var(--font-display);--font-data:var(--font-display);--font-reading:"Atkinson Hyperlegible Next", "Atkinson Hyperlegible Fallback", "Hiragino Sans", "Hiragino Kaku Gothic ProN", "BIZ UDPGothic", "Meiryo", "Yu Gothic", "Noto Sans JP", "Noto Sans CJK JP", system-ui, sans-serif}html:lang(ko){--font-display:"JetBrains Mono Variable", "JetBrains Mono Fallback", "Apple SD Gothic Neo", "Malgun Gothic", "Noto Sans KR", "Noto Sans CJK KR", ui-monospace, monospace;--font-text:var(--font-display);--font-data:var(--font-display);--font-reading:"Atkinson Hyperlegible Next", "Atkinson Hyperlegible Fallback", "Apple SD Gothic Neo", "Malgun Gothic", "Noto Sans KR", "Noto Sans CJK KR", system-ui, sans-serif}html:lang(ja) body{line-break:strict;overflow-wrap:anywhere}html:lang(ko) body{word-break:keep-all;overflow-wrap:anywhere}html:lang(ja) :is(h1,h2,h3){word-break:auto-phrase}html:is(:lang(ja),:lang(ko)) :is(h1,h2,h3,h4){letter-spacing:0}html:is(:lang(ja),:lang(ko)) .prose{line-height:1.8}html:is(:lang(ja),:lang(ko)) em{font-style:normal;font-weight:700}@font-face{font-family:JetBrains Mono Variable;font-style:normal;font-display:swap;font-weight:100 800;src:url(/_astro/jetbrains-mono-cyrillic-ext-wght-normal.EocZY2iu.woff2)format("woff2-variations");unicode-range:U+460-52F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:JetBrains Mono Variable;font-style:normal;font-display:swap;font-weight:100 800;src:url(/_astro/jetbrains-mono-cyrillic-wght-normal.D73BlboJ.woff2)format("woff2-variations");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:JetBrains Mono Variable;font-style:normal;font-display:swap;font-weight:100 800;src:url(/_astro/jetbrains-mono-greek-wght-normal.Bw9x6K1M.woff2)format("woff2-variations");unicode-range:U+370-377,U+37A-37F,U+384-38A,U+38C,U+38E-3A1,U+3A3-3FF}@font-face{font-family:JetBrains Mono Variable;font-style:normal;font-display:swap;font-weight:100 800;src:url(/_astro/jetbrains-mono-vietnamese-wght-normal.Bt-aOZkq.woff2)format("woff2-variations");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:JetBrains Mono Variable;font-style:normal;font-display:swap;font-weight:100 800;src:url(/_astro/jetbrains-mono-latin-ext-wght-normal.DBQx-q_a.woff2)format("woff2-variations");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:JetBrains Mono Variable;font-style:normal;font-display:swap;font-weight:100 800;src:url(/_astro/jetbrains-mono-latin-wght-normal.B9CIFXIH.woff2)format("woff2-variations");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:Atkinson Hyperlegible Next;font-style:normal;font-display:swap;font-weight:400;src:url(/_astro/atkinson-hyperlegible-next-latin-400-normal.FfmJh7DR.woff2)format("woff2"),url(/_astro/atkinson-hyperlegible-next-latin-400-normal.DPp7N0cD.woff)format("woff")}@font-face{font-family:Atkinson Hyperlegible Next;font-style:normal;font-display:swap;font-weight:700;src:url(/_astro/atkinson-hyperlegible-next-latin-700-normal.Dpiyiu63.woff2)format("woff2"),url(/_astro/atkinson-hyperlegible-next-latin-700-normal.C2qZD_Q9.woff)format("woff")}@font-face{font-family:Atkinson Hyperlegible Next;font-style:italic;font-display:swap;font-weight:400;src:url(/_astro/atkinson-hyperlegible-next-latin-400-italic.DZBmTazM.woff2)format("woff2"),url(/_astro/atkinson-hyperlegible-next-latin-400-italic.C-uEjDrs.woff)format("woff")}@font-face{font-family:Atkinson Hyperlegible Next;font-style:italic;font-display:swap;font-weight:700;src:url(/_astro/atkinson-hyperlegible-next-latin-700-italic.ByvmSGPy.woff2)format("woff2"),url(/_astro/atkinson-hyperlegible-next-latin-700-italic.DbbrSpud.woff)format("woff")}@font-face{font-family:Atkinson Hyperlegible Fallback;src:local(Arial),local(ArialMT),local(Liberation Sans),local(Arimo),local(Roboto);size-adjust:99.6%;ascent-override:98.8%;descent-override:31.7%;line-gap-override:0%}@font-face{font-family:JetBrains Mono Fallback;src:local(SF Mono),local(SFMono-Regular),local(Menlo),local(Consolas),local(Courier New),local(DejaVu Sans Mono),local(Liberation Mono),local(Cousine),local(Roboto Mono);size-adjust:100%;ascent-override:102%;descent-override:30%;line-gap-override:0%}:root{--paper:#fff;--surface:#fff;--ink:#13261f;--ink-muted:#4f5f57;--rule:#e1e9e3;--rest:#1f6b4c;--rest-soft:#e6f2eb;--on-rest:#fff;--strain:#8a5200;--strain-soft:#fff3e0;--calm:#1d5c8a;--calm-soft:#e6f0f8;--focus:#1f6b4c;--control-border:#7f8f86;color-scheme:light;--wash:#eef6f1;--wash-warm:#fbf3e6;--mist:#f5f7f4;--glow-cool:#cfe7d7;--glow-warm:#f5e3c4;--shadow-card:0 1px 2px #13261f0d, 0 12px 32px -14px #13261f1f;--shadow-pop:0 2px 6px #13261f14, 0 18px 40px -12px #13261f38;--scrim:#13261f66}@media (prefers-color-scheme:dark){:root:not([data-theme=light]){--paper:#101412;--surface:#171d1a;--ink:#e7eee9;--ink-muted:#a8b5ad;--rule:#28312c;--rest:#74c69d;--rest-soft:#1a2a22;--on-rest:#0d1410;--strain:#e8b464;--strain-soft:#2b2214;--calm:#8cc0ea;--calm-soft:#16222c;--focus:#74c69d;--control-border:#6d7d74;color-scheme:dark;--wash:#151c18;--wash-warm:#1d1a14;--mist:#141a17;--glow-cool:#1f3a2d;--glow-warm:#3a2f1c;--shadow-card:none;--shadow-pop:0 18px 40px -12px #000000b3;--scrim:#0009}}:root[data-theme=dark]{--paper:#101412;--surface:#171d1a;--ink:#e7eee9;--ink-muted:#a8b5ad;--rule:#28312c;--rest:#74c69d;--rest-soft:#1a2a22;--on-rest:#0d1410;--strain:#e8b464;--strain-soft:#2b2214;--calm:#8cc0ea;--calm-soft:#16222c;--focus:#74c69d;--control-border:#6d7d74;color-scheme:dark;--wash:#151c18;--wash-warm:#1d1a14;--mist:#141a17;--glow-cool:#1f3a2d;--glow-warm:#3a2f1c;--shadow-card:none;--shadow-pop:0 18px 40px -12px #000000b3;--scrim:#0009}:root{--font-display:"JetBrains Mono Variable", "JetBrains Mono Fallback", ui-monospace, monospace;--font-text:"JetBrains Mono Variable", "JetBrains Mono Fallback", ui-monospace, monospace;--font-data:"JetBrains Mono Variable", "JetBrains Mono Fallback", ui-monospace, monospace;--font-reading:"Atkinson Hyperlegible Next", "Atkinson Hyperlegible Fallback", system-ui, sans-serif;--step--1:.875rem;--step-0:1rem;--step-1:1.125rem;--step-2:1.35rem;--step-3:clamp(1.6rem, 1.3rem + 1.2vw, 2.2rem);--step-4:clamp(1.9rem, 1.4rem + 2vw, 2.9rem);--step-5:clamp(2.3rem, 1.5rem + 3.4vw, 3.9rem);--space-1:.25rem;--space-2:.5rem;--space-3:.75rem;--space-4:1rem;--space-5:1.5rem;--space-6:2rem;--space-7:3rem;--space-8:4.5rem;--space-9:clamp(4.5rem, 3rem + 6vw, 8rem);--measure:64ch;--page:76rem;--gutter:clamp(1rem, 4vw, 2.5rem);--radius:12px;--radius-lg:24px;--radius-pill:999px;--ease:cubic-bezier(.2, .7, .2, 1);--dur-fast:.15s;--dur-draw:1.6s}*,:before,:after{box-sizing:border-box}html{accent-color:var(--rest);-webkit-text-size-adjust:100%;text-size-adjust:100%}body{background:var(--paper);color:var(--ink);font-family:var(--font-text);font-size:var(--step-0);font-optical-sizing:auto;-webkit-font-smoothing:antialiased;margin:0;line-height:1.7}img,svg,video{max-width:100%;height:auto;display:block}h1,h2,h3,h4{letter-spacing:-.01em;text-wrap:balance;overflow-wrap:break-word;margin:0;font-weight:700;line-height:1.2}h1,h2,.display{font-family:var(--font-display);letter-spacing:-.045em;font-weight:650;line-height:1.12}h1{font-size:var(--step-4)}h2{font-size:var(--step-3)}h3{font-size:var(--step-1)}h4{font-size:var(--step-0)}p{text-wrap:pretty;margin:0}a{color:var(--rest);text-underline-offset:.2em;text-decoration-thickness:1px}a:hover{text-decoration-thickness:2px}:focus-visible{outline:3px solid var(--focus);outline-offset:3px;border-radius:4px}button,input,select,textarea{font:inherit;color:inherit}.data{font-variant-numeric:tabular-nums}.prose>:is(p,ul,ol,blockquote),.prose>.table-scroll td,.prose>table td,.prose figcaption{font-family:var(--font-reading)}math{font-size:1.05em}math[display=block]{margin-block:var(--space-3);padding-block:var(--space-1);font-size:1.15em;display:block;overflow:auto hidden}.katex:has(>math[display=block]),.formula:has(math[display=block]){contain:inline-size;min-width:0;max-width:100%;display:block;overflow-x:auto}.katex>math[display=block]{overflow:visible}.table-scroll,.katex:has(>math[display=block]),.formula:has(math[display=block]){--scroll-bg:var(--paper);--scroll-shade:color-mix(in srgb, var(--ink) 34%, transparent);background:linear-gradient(to right, var(--scroll-bg) 50%, transparent) left / 3rem 100% no-repeat local, linear-gradient(to left, var(--scroll-bg) 50%, transparent) right / 3rem 100% no-repeat local, linear-gradient(to right, var(--scroll-shade), transparent) left / 1.25rem 100% no-repeat scroll, linear-gradient(to left, var(--scroll-shade), transparent) right / 1.25rem 100% no-repeat scroll;background-color:var(--scroll-bg)}code,kbd{font-family:var(--font-data);font-variant-numeric:tabular-nums}.eyebrow{color:var(--rest);font-size:var(--step--1);letter-spacing:.01em;font-weight:700}.visually-hidden:not(:focus):not(:active){clip:rect(0 0 0 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.print-source{display:none}.skip-link{z-index:100;padding:var(--space-2) var(--space-4);background:var(--rest);color:var(--on-rest);border-radius:var(--radius-pill);font-weight:700;position:absolute;inset-block-start:var(--space-4);inset-inline-start:var(--space-4);transform:translateY(-200%)}.skip-link:focus{transform:none}.wrap{width:min(100% - 2 * var(--gutter), var(--page));margin-inline:auto}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;animation-duration:.01ms!important;animation-iteration-count:1!important}summary:before,summary:after{transition-duration:0s!important}}:where(details[open]>:not(summary)){transition:opacity .2s cubic-bezier(.23,1,.32,1)}@starting-style{:where(details[open]>:not(summary)){opacity:0}}@media (prefers-reduced-motion:no-preference){:where(details[open]>:not(summary)){transition:opacity .2s cubic-bezier(.23,1,.32,1),transform .2s cubic-bezier(.23,1,.32,1)}@starting-style{:where(details[open]>:not(summary)){transform:translateY(-4px)}}}.theme-toggle{border:1px solid var(--rule);border-radius:6px;margin:0;padding:0;display:inline-flex}.theme-toggle__option+.theme-toggle__option{border-inline-start:1px solid var(--rule)}.theme-toggle__option span{min-width:44px;min-height:44px;color:var(--ink-muted);font-size:var(--step--1);cursor:pointer;place-items:center;padding:0 .75rem;line-height:1;display:inline-grid}.theme-toggle__option span:hover{color:var(--ink)}.theme-toggle__option input:checked+span{color:var(--ink);text-decoration:underline;text-decoration-color:var(--rest);text-underline-offset:.35em;font-weight:700;text-decoration-thickness:2px}.theme-toggle__option:has(input:focus-visible) span{outline:3px solid var(--focus);outline-offset:-3px}.button{border:1.5px solid var(--rest);border-radius:var(--radius-pill);min-height:48px;color:var(--rest);text-align:center;cursor:pointer;transition:background-color var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease);background:0 0;justify-content:center;align-items:center;gap:.5em;padding:0 1.4rem;font-weight:700;line-height:1.2;text-decoration:none;display:inline-flex}@media (prefers-reduced-motion:no-preference){.button{transition:background-color var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease), transform var(--dur-fast) var(--ease)}}.button:hover{background:var(--rest-soft)}.button:active{transform:translateY(1px)}.button--primary{border-color:var(--rest);background:var(--rest);color:var(--on-rest)}.button--primary:hover{background:color-mix(in srgb, var(--rest) 86%, var(--ink));color:var(--on-rest)}.button--small{min-height:40px;font-size:var(--step--1);padding:0 1rem}.link-arrow{align-items:center;gap:.35em;font-weight:700;text-decoration:none;display:inline-flex}.link-arrow:after{content:"";border-block-start:2px solid;border-inline-end:2px solid;width:.45em;height:.45em;transform:rotate(45deg)}@media (prefers-reduced-motion:no-preference){.link-arrow:after{transition:transform var(--dur-fast) var(--ease)}}@media (hover:hover) and (pointer:fine){.link-arrow:hover:after{transform:translate(3px)rotate(45deg)}}.link-arrow:hover{text-decoration:underline}.card{border:1px solid var(--rule);border-radius:var(--radius-lg);background:var(--surface);box-shadow:var(--shadow-card)}.panel{border-radius:var(--radius-lg);background:var(--wash)}.panel--mist{background:var(--mist)}.ruled-list{border-block-start:1px solid var(--rule);margin:0;padding:0;list-style:none}.ruled-list>li{gap:var(--space-1);padding-block:var(--space-3);border-block-end:1px solid var(--rule);display:grid}.ruled-list>li>a{color:var(--ink);justify-self:start;padding-block:.4rem;font-weight:700;line-height:1.4;text-decoration:none}.ruled-list>li>a:hover{color:var(--rest);text-decoration:underline}.ruled-list>li>p{color:var(--ink-muted);font-family:var(--font-reading);font-size:var(--step-0);line-height:1.55}.section{padding-block:var(--space-9) 0}.section__head{gap:var(--space-3);max-width:44rem;margin-block-end:var(--space-7);display:grid}.section__head--center{text-align:center;justify-items:center;margin-inline:auto}.section__head p:not(.eyebrow){color:var(--ink-muted);font-family:var(--font-reading);font-size:var(--step-1)}.tile-icon{border:1px solid var(--rule);background:var(--surface);border-radius:14px;flex:none;place-items:center;width:48px;height:48px;display:inline-grid}.icon{color:var(--rest)}.tile-icon svg{width:26px;height:26px}.control{border:1px solid var(--control-border);border-radius:var(--radius);background-color:var(--surface);width:100%;min-height:48px;color:var(--ink);font-size:var(--step-0);transition:border-color var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease);padding:0 .9rem;line-height:1.4}textarea.control{resize:vertical;min-height:6rem;padding-block:.7rem}select.control{appearance:none;background-image:linear-gradient(45deg, transparent 50%, var(--ink-muted) 50%), linear-gradient(135deg, var(--ink-muted) 50%, transparent 50%);background-position:calc(100% - 1.15rem) 52%,calc(100% - .8rem) 52%;background-repeat:no-repeat;background-size:.35rem .35rem;padding-inline-end:2.5rem}.control:hover{border-color:var(--ink-muted)}.control:focus,.control:focus-visible{border-color:var(--rest);box-shadow:0 0 0 1px var(--rest), 0 0 0 5px color-mix(in srgb, var(--rest) 22%, transparent);outline:none}.control[aria-invalid=true]{border-color:var(--strain);box-shadow:0 0 0 1px var(--strain)}.control[aria-invalid=true]:focus{box-shadow:0 0 0 1px var(--strain), 0 0 0 5px color-mix(in srgb, var(--strain) 22%, transparent)}.control:disabled{opacity:.6;cursor:not-allowed}.field{align-content:start;gap:.4rem;min-width:0;display:grid}.field>label,.field__label{font-weight:700}.field__hint{color:var(--ink-muted);font-size:var(--step--1)}.field__error{color:var(--strain);font-size:var(--step--1);font-weight:700}html.js .no-js-note{display:none}.no-js-note{font-size:var(--step--1);color:var(--ink-muted)}.prose{max-width:44rem;font-size:clamp(1.0625rem,1rem + .35vw,1.1875rem);line-height:1.65}.prose>*+*{margin-block-start:1.25em}.prose>:not(h2,h3,h4)+:is(figure,aside,details,table,blockquote,div),.prose>:is(figure,aside,details,table,blockquote,div)+:not(h2,h3,h4){margin-block-start:var(--space-6)}.prose h2{margin-block-start:var(--space-8);font-size:clamp(1.65rem,1.35rem + 1.2vw,2.15rem)}.prose h3{font-size:var(--step-1);margin-block-start:var(--space-6)}.prose h4{margin-block-start:var(--space-5)}.prose h2+*,.prose h3+*,.prose h4+*{margin-block-start:var(--space-3)}.prose ul,.prose ol{padding-inline-start:1.35em}.prose li+li{margin-block-start:.5em}.prose li::marker{color:var(--rest)}.prose ol>li::marker{font-variant-numeric:tabular-nums;font-weight:700}.prose blockquote{border-inline-start:1px solid var(--control-border);color:var(--ink-muted);margin-inline:0;padding-inline-start:var(--space-5)}.prose blockquote>*+*{margin-block-start:var(--space-3)}.prose hr{margin-block:var(--space-7);border:0;border-block-start:1px solid var(--rule)}.prose{--table-max:100%}.prose .table-scroll{border:1px solid var(--rule);border-radius:var(--radius);overscroll-behavior-inline:contain;min-width:0;max-width:100%;overflow-x:auto}.prose .table-scroll:focus-visible{outline:2px solid var(--rest);outline-offset:2px}@media screen and (width>=40rem){.prose>.table-scroll{width:fit-content;min-width:100%;max-width:var(--table-max)}.prose>.table-scroll--wide{width:max-content}}@supports (animation-timeline:scroll()){.table-scroll{scroll-timeline:--table-scroll inline}.table-scroll:before{content:"Scroll the table sideways →";content:"Scroll the table sideways →" / "";width:max-content;visibility:hidden;block-size:0;padding-inline:var(--space-3);color:var(--ink-muted);font-family:var(--font-text);font-size:var(--step--1);--table-scroll-timeline:--table-scroll;animation:linear both table-scroll-hint;animation-timeline:var(--table-scroll-timeline);line-height:1.4;display:block;position:sticky;inset-inline-start:0;overflow:hidden}}@keyframes table-scroll-hint{0%,to{block-size:auto;visibility:visible;padding-block-start:var(--space-2)}}.prose table{border-collapse:separate;border-spacing:0;width:100%;font-size:var(--step-0);line-height:1.55}.prose th,.prose td{padding:var(--space-3);border-block-end:1px solid var(--rule);text-align:start;vertical-align:top;overflow-wrap:break-word;hyphens:manual}.prose .nowrap{white-space:nowrap}.prose :is(th,td) code{overflow-wrap:anywhere}.prose tbody tr:last-child>*{border-block-end:0}.prose th{background:var(--mist);font-weight:700}.prose .table-scroll th{background:color-mix(in srgb, var(--ink) 4%, transparent)}.prose td{font-variant-numeric:tabular-nums}.prose .table--wide :is(th,td){padding-inline:var(--space-2)}@media screen and (width<=39.99rem){.prose .table-scroll--stack{background:0 0;border:0;border-radius:0;overflow:visible}.prose .table--stack,.prose .table--stack :is(tbody,tr,th,td){display:block}.prose .table--stack thead{clip-path:inset(50%);white-space:nowrap;width:1px;height:1px;position:absolute;overflow:hidden}.prose .table--stack tbody{gap:var(--space-3);display:grid}.prose .table--stack tr{border:1px solid var(--rule);border-radius:var(--radius);padding-block-end:var(--space-3);overflow:hidden}.prose .table--stack tr>*{padding:var(--space-2) var(--space-4) 0;background:0 0;border:0}.prose .table--stack tr>:first-child{padding-block:var(--space-2);border-block-end:1px solid var(--rule);background:var(--mist);margin-block-end:var(--space-1);font-weight:700}.prose .table--stack td:before{content:attr(data-label);content:attr(data-label) / "";color:var(--ink-muted);font-family:var(--font-text);font-size:var(--step--1);font-weight:400;line-height:1.4;display:block}.prose .table--stack tr>td:first-child:before,.prose .table--stack td:not([data-label]):before{content:none}.prose .table--stack td:empty{display:none}}.prose :is(h2,h3)[id]{scroll-margin-block-start:6.5rem}.prose code{background:var(--mist);border-radius:6px;padding:.1em .35em;font-size:.88em}.prose strong{font-weight:700}.prose img{border-radius:var(--radius)}.prose :is(table,.table-scroll)+p:has(>em:only-child){color:var(--ink-muted);font-size:var(--step--1);margin-block-start:var(--space-3);line-height:1.55}.checker__form,.hrv-test{gap:var(--space-5);border-radius:var(--radius);background:var(--mist);padding:clamp(1rem,.6rem + 2vw,2rem);display:grid}.form-row{gap:var(--space-5);display:grid}@media (width>=36rem){.form-row{grid-template-columns:1fr 1fr}}.form-actions{align-items:center;gap:var(--space-3) var(--space-5);flex-wrap:wrap;display:flex}.result-card,.hrv-result{gap:var(--space-4);border:1px solid var(--rule);border-radius:var(--radius);background:var(--surface);padding:clamp(1.25rem,.8rem + 2vw,2.25rem);display:grid}.result-card__label{color:var(--rest);font-family:var(--font-text);font-size:var(--step--1);font-variation-settings:normal;letter-spacing:.01em;font-weight:700;line-height:1.4}.result-card__value{align-items:baseline;gap:0 var(--space-3);font-family:var(--font-display);letter-spacing:-.02em;flex-wrap:wrap;font-size:clamp(2.75rem,2.2rem + 2.5vw,3.75rem);line-height:1;display:flex}.result-card__unit{color:var(--ink-muted);font-family:var(--font-text);font-size:var(--step-0);letter-spacing:0;font-weight:700}.result-card__text{font-size:var(--step-1);line-height:1.5}.result-card__notes{gap:var(--space-3);border-block-start:1px solid var(--rule);color:var(--ink-muted);font-size:var(--step--1);padding-block-start:var(--space-4);display:grid}.data-table,.readings-table{border-collapse:collapse;width:100%;font-size:var(--step--1)}.data-table caption,.readings-table caption{text-align:start;padding-block-end:var(--space-3);font-weight:700}.data-table th,.readings-table th{padding:var(--space-2) var(--space-3);border-block-end:1px solid var(--rule);color:var(--ink-muted);text-align:start;white-space:nowrap;font-weight:700}.data-table td,.readings-table td{padding:var(--space-2) var(--space-3);border-block-end:1px solid var(--rule);text-align:start;vertical-align:middle}.data-table :is(th,td):first-child,.readings-table :is(th,td):first-child{padding-inline-start:0}.data-table tbody tr:last-child td,.readings-table tbody tr:last-child td{border-block-end:0}.table-scroll{border-radius:var(--radius);max-width:100%;position:relative;overflow-x:auto}.table-scroll:focus-visible{outline-offset:2px}.rr-explorer{gap:var(--space-4);display:grid}.rr-explorer__control{gap:var(--space-2);font-weight:700;display:grid}.rr-explorer__control input{width:100%;min-height:44px;accent-color:var(--rest);cursor:pointer;margin:0}.rr-explorer__chart{width:100%;height:auto}.rr-explorer__base{stroke:var(--rule)}.rr-explorer__tick{stroke:var(--rest);stroke-width:2.5px;stroke-linecap:round}.rr-explorer__line{fill:none;stroke:var(--rest);stroke-width:2.5px;stroke-linejoin:round;stroke-linecap:round}.rr-explorer__readout{gap:var(--space-2);grid-template-columns:repeat(3,minmax(0,1fr));margin:0;display:grid}.rr-explorer__readout>div{min-width:0;padding:var(--space-3);background:var(--mist);border-radius:14px}.rr-explorer__readout dt{color:var(--ink-muted);font-size:var(--step--1);font-weight:700}.rr-explorer__readout dd{font-size:var(--step-1);margin:0;font-weight:700;line-height:1.3}.pacer{gap:var(--space-4);padding:var(--space-6) var(--space-5);border:1px solid var(--rule);border-radius:var(--radius-lg);background:var(--surface);box-shadow:var(--shadow-card);justify-items:center;display:grid}.pacer__controls{justify-content:center;align-items:end;gap:var(--space-4);flex-wrap:wrap;display:flex}.pacer__controls label{gap:var(--space-1);font-size:var(--step--1);font-weight:700;display:grid}.pacer__controls select{width:auto;min-width:7rem}.pacer__button{min-width:7rem}.pacer__stage{background:radial-gradient(closest-side, var(--wash), transparent);border-radius:50%;place-items:center;width:11rem;height:11rem;display:grid}.pacer__circle{border:5px solid var(--rest);background:radial-gradient(circle at 35% 30%, var(--surface), var(--rest-soft) 70%);border-radius:50%;width:9.2rem;height:9.2rem;transform:scale(.4348)}.pacer__circle--in{transform:scale(1)}.pacer__circle--out{transform:scale(.435)}@media (prefers-reduced-motion:no-preference){.pacer__circle{transition:transform .2s cubic-bezier(.23,1,.32,1)}.pacer__circle--in,.pacer__circle--out{transition-timing-function:ease-in-out}}.pacer__cue{min-height:1.6em;font-family:var(--font-display);font-size:var(--step-2)}.quiz{gap:var(--space-3);display:grid}.quiz__question{padding:var(--space-5);border-radius:var(--radius);background:var(--mist);border:0;min-width:0;margin:0}.quiz__question legend{float:left;width:100%;padding:0;font-weight:700;line-height:1.4}.quiz__number{color:var(--rest);font-size:var(--step--1);margin-block-end:var(--space-1);font-weight:700;display:block}.quiz__options{clear:both;gap:var(--space-2);padding:var(--space-4) 0 0;margin:0;list-style:none;display:grid}.quiz__option{border:1px solid var(--rule);border-radius:var(--radius);background:var(--surface);transition:background-color var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease)}.quiz__option:has(input:not(:disabled)):hover{border-color:var(--rest)}.quiz__option:has(input:focus-visible){outline:3px solid var(--focus);outline-offset:2px}.quiz__option label{gap:var(--space-3);min-height:48px;padding:var(--space-2) var(--space-4);cursor:pointer;align-items:center;display:flex}.quiz__option input{width:1.25rem;height:1.25rem;accent-color:var(--rest);flex:none;margin:0}.quiz__option input:disabled+span,.quiz__option:has(input:disabled) label{cursor:default}.quiz__option[data-state=correct]{border-color:var(--rest);background:var(--rest-soft)}.quiz__option[data-state=wrong]{border-color:var(--strain);background:var(--strain-soft)}.quiz__tag{font-size:var(--step--1);margin-inline-start:calc(var(--space-4) + 1.25rem + var(--space-3));font-weight:700;display:block}.quiz__option[data-state=correct] .quiz__tag{color:var(--rest)}.quiz__option[data-state=wrong] .quiz__tag{color:var(--strain)}.quiz__explanation{margin:var(--space-1) var(--space-4) var(--space-3) calc(var(--space-4) + 1.25rem + var(--space-3));color:var(--ink-muted);font-size:var(--step--1)}.quiz__verdict{margin-block-start:var(--space-4);font-weight:700}.quiz__result{align-items:center;gap:var(--space-4);padding:var(--space-5);border-radius:var(--radius);background:var(--mist);flex-wrap:wrap;display:flex}.quiz__score{font-family:var(--font-display);font-size:var(--step-2)}.quiz__pass{flex-basis:100%;font-weight:700}.quiz__result[data-passed=true] .quiz__pass{color:var(--rest)}.quiz__result .quiz__retry{order:3}.quiz__best{padding:var(--space-3) var(--space-4);border-inline-start:3px solid var(--control-border);color:var(--ink-muted);font-size:var(--step--1)}.quiz__best[data-passed=true]{border-inline-start-color:var(--rest)}.quiz__retry,.reset-progress__start,.reset-progress__confirm,.reset-progress__cancel{border:1.5px solid var(--rest);border-radius:var(--radius-pill);min-height:44px;color:var(--rest);font-size:var(--step--1);cursor:pointer;transition:background-color var(--dur-fast) var(--ease);background:0 0;padding:0 1.2rem;font-weight:700}.quiz__retry:hover,.reset-progress__start:hover,.reset-progress__cancel:hover{background:var(--rest-soft)}.reset-progress__start{border-color:var(--control-border);color:var(--ink-muted)}.reset-progress__confirm{border-color:var(--strain);background:var(--strain-soft);color:var(--strain)}.reset-progress{justify-content:center;align-items:center;gap:var(--space-3);flex-wrap:wrap;display:flex}.course-map{margin:0;padding:0;list-style:none;display:grid}.course-map__item{column-gap:var(--space-3);padding-block:var(--space-3);border-block-end:1px solid var(--rule);grid-template-columns:2rem minmax(0,1fr);align-items:baseline;display:grid}.course-map__item:last-child{border-block-end:0}.course-map__order{background:var(--mist);width:2rem;height:2rem;color:var(--ink-muted);font-size:var(--step--1);border-radius:50%;align-self:start;place-items:center;font-weight:700;display:inline-grid}.course-map__item[data-done=true] .course-map__order{background:var(--rest);color:var(--on-rest)}.course-map__item[data-attempted=true] .course-map__order{box-shadow:inset 0 0 0 2px var(--control-border)}.course-map__item[data-current=true] .course-map__order{box-shadow:inset 0 0 0 2px var(--rest);color:var(--rest)}.course-map__item a,.course-map__item [aria-current]{align-self:center;font-weight:700;line-height:1.35}.course-map__item a{color:var(--ink);text-decoration:none}.course-map__item a:hover{color:var(--rest);text-decoration:underline}.course-map__item[data-current=true]{font-weight:700}.course-map__note{color:var(--ink-muted);font-size:var(--step--1);grid-column:2;font-weight:400}.course-map__item [aria-current] .course-map__note{color:var(--rest)}.course-map__note a{font-weight:400;text-decoration:underline}.course-map__progress{color:var(--ink-muted);font-size:var(--step--1);margin-block-end:var(--space-3)}.course-cards .course-map{gap:var(--space-3);grid-template-columns:minmax(0,1fr)}@media (width>=36rem){.course-cards .course-map{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (width>=48rem){.course-cards .course-map{grid-template-columns:repeat(3,minmax(0,1fr))}}@media (width>=72rem){.course-cards .course-map{grid-template-columns:repeat(5,minmax(0,1fr))}}.course-cards .course-map>li{align-content:start;gap:0 var(--space-3);padding:var(--space-2);border:1px solid var(--rule);border-radius:var(--radius);background:var(--surface);transition:border-color var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease);grid-template-columns:minmax(0,2fr) minmax(0,3fr);display:grid;position:relative}.course-cards .course-map>li>*{grid-column:2;align-self:start}.course-cards .course-map>li>.course-map__cover{grid-area:1/1/span 3}@media (width>=36rem){.course-cards .course-map>li{grid-template-columns:minmax(0,1fr)}.course-cards .course-map>li>*{padding-inline:var(--space-1);grid-column:1}.course-cards .course-map>li>.course-map__cover{grid-row:auto;margin-block-end:var(--space-2);padding:0}}.course-map__cover{aspect-ratio:16/9;border-radius:calc(var(--radius) - 4px);background:var(--wash);width:100%;height:auto;display:block}.course-cards .course-map>li .course-map__order{background:var(--surface);width:auto;min-width:1.5rem;height:auto;color:var(--ink);text-align:center;border-radius:4px;grid-area:auto;padding:0 .375rem;font-size:.75rem;line-height:1.5;display:block;position:absolute;inset-block-start:calc(var(--space-2) + .375rem);inset-inline-start:calc(var(--space-2) + .375rem)}.course-cards .course-map>li[data-next=true] .course-map__order{box-shadow:inset 0 0 0 1.5px var(--rest);color:var(--rest)}.course-cards .course-map>li[data-done=true] .course-map__order{background:var(--rest);color:var(--on-rest)}.course-cards .course-map>li[data-done=true] .course-map__order:after{content:" ✓"}.course-cards .course-map>li>a,.course-cards .course-map>li>.course-card__title{color:var(--ink);font-size:var(--step--1);overflow-wrap:break-word;font-weight:700;line-height:1.35;text-decoration:none}.course-cards .course-map>li>a:after{content:"";border-radius:var(--radius);position:absolute;inset:0}.course-cards .course-map>li>a:hover{text-decoration:underline}.course-cards .course-map>li>a:focus-visible{outline:none}.course-cards .course-map>li>a:focus-visible:after{outline:3px solid var(--focus);outline-offset:3px}.course-cards .course-map .course-map__note{margin-block-start:var(--space-1);font-size:.8125rem;line-height:1.4}.course-cards .course-map__note a{z-index:1;position:relative}.course-cards .course-map>li:has(>a:hover){border-color:var(--rest);box-shadow:var(--shadow-card)}.course-cards .course-map>li[data-next=true]{border-color:var(--rest);box-shadow:0 0 0 1px var(--rest)}.course-cards .course-map>li[data-next=true]:has(>a:hover){box-shadow:0 0 0 1px var(--rest), var(--shadow-card)}.course-cards .course-map>li.course-card--soon{background:0 0;border-style:dashed}.course-card--soon .course-map__cover{opacity:.4}.course-cards .course-map>li>.course-card__title{color:var(--ink-muted);font-weight:400}@media (prefers-reduced-motion:no-preference){.course-cards .course-map>li{transition:border-color var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease), transform var(--dur-fast) var(--ease)}.course-cards .course-map>li:has(>a:is(:hover,:focus-visible)){transform:translateY(-2px)}}.lesson-covers{width:0;height:0;position:absolute;overflow:hidden}.progress-code{border-block:1px solid var(--rule);display:none}html.js .progress-code{display:block}.progress-code>summary{cursor:pointer;align-items:center;min-height:48px;font-weight:700;display:flex}.progress-code>summary:hover{color:var(--rest)}.progress-code__body{gap:var(--space-5);padding-block:var(--space-2) var(--space-5);display:grid}.progress-code__part{gap:var(--space-3);justify-items:start;display:grid}.progress-code__title{font-weight:700;font-size:var(--step-0)}.progress-code__hint{color:var(--ink-muted);font-size:var(--step--1)}.progress-code label{justify-self:stretch}.progress-code textarea{width:100%;min-height:5.5rem;padding:var(--space-2) var(--space-3);border:1px solid var(--control-border);border-radius:var(--radius);background:var(--surface);color:var(--ink);font-family:var(--font-data);font-size:var(--step--1);overflow-wrap:anywhere;resize:vertical}.progress-code__button{border:1.5px solid var(--rest);border-radius:var(--radius-pill);min-height:44px;color:var(--rest);font-size:var(--step--1);cursor:pointer;background:0 0;padding:0 1.2rem;font-weight:700}.progress-code__button:hover{background:var(--rest-soft)}.progress-code__message{font-weight:700}.progress-code__message[data-tone=error]{color:var(--strain)}.progress-code__message[data-tone=ok]{color:var(--rest)}.signup__done{font-weight:700}.checker,.checker__row{gap:var(--space-5);display:grid}@media (width>=36rem){.checker__row{grid-template-columns:1fr 1fr}}.checker__submit{width:100%;margin-block-start:var(--space-1)}.checker__summary{font-size:var(--step-1);font-weight:700;line-height:1.45}.checker__result>p:not([class]){color:var(--ink-muted)}.checker__summary,.checker__detail,.checker__notes,.checker__activity,.checker__source,.checker__doctor,.checker__trend,.checker__figures dd,.checker__device dd{font-family:var(--font-reading)}.checker__activity,.checker__source,.checker__trend{color:var(--ink-muted);font-size:var(--step--1)}.checker__source{border-block-start:1px solid var(--rule);padding-block-start:var(--space-4)}.checker__detail{color:var(--ink-muted)}.checker__notes{gap:var(--space-2);border-inline-start:3px solid var(--rule);font-size:var(--step--1);padding-inline-start:var(--space-4);display:grid}.checker__notes[data-rough=true]{border-inline-start-color:var(--rest)}.checker__device-title{font-size:var(--step-0);margin-block-start:var(--space-2)}.checker__doctor{border-block-start:1px solid var(--rule);font-size:var(--step--1);padding-block-start:var(--space-4)}.checker__device,.checker__figures{gap:0 var(--space-5);margin:0;display:grid}@media (width>=36rem){.checker__device,.checker__figures{grid-template-columns:1fr 1fr}}.checker__device>div,.checker__figures>div{padding-block:var(--space-3);border-block-start:1px solid var(--rule)}.checker__device dt,.checker__figures dt{font-size:var(--step--1);font-weight:700}.checker__device dd,.checker__figures dd{margin:var(--space-1) 0 0;color:var(--ink-muted);font-size:var(--step--1)}.checker__figures dd a,.checker__device dd a{overflow-wrap:anywhere}.band{padding:2.75rem var(--space-2) 3.25rem}.band__track{border-radius:var(--radius-pill);background:var(--mist);height:10px;box-shadow:inset 0 0 0 1px var(--rule);position:relative}.band__core{border-radius:var(--radius-pill);background:color-mix(in srgb, var(--rest) 35%, transparent);position:absolute;top:0;bottom:0}.band__mark{background:var(--ink-muted);border-radius:1px;width:2px;height:16px;margin-inline-start:-1px;position:absolute;top:-3px}.band__label{color:var(--ink-muted);text-align:center;white-space:nowrap;font-size:.75rem;line-height:1.35;position:absolute;top:22px;transform:translate(-50%)}.band__you{background:var(--ink);width:4px;height:28px;box-shadow:0 0 0 2px var(--surface);border-radius:2px;margin-inline-start:-2px;position:absolute;top:-9px}.band__you-label{color:var(--ink);font-size:var(--step--1);white-space:nowrap;font-weight:700;position:absolute;bottom:32px;transform:translate(-50%)}.outbox{gap:var(--space-4);margin:0;padding:0;list-style:none;display:grid}.outbox__item{gap:var(--space-2);min-width:0;padding:var(--space-5);border:1px solid var(--rule);border-radius:var(--radius);background:var(--surface);display:grid}.outbox__meta{color:var(--ink-muted);font-size:var(--step--1)}.outbox__subject{font-weight:700}.outbox__text{padding:var(--space-4);border-radius:var(--radius);background:var(--mist);font-family:var(--font-text);font-size:var(--step--1);white-space:pre-wrap;overflow-wrap:anywhere;margin:0}.account-card{gap:var(--space-4);border:1px solid var(--rule);border-radius:var(--radius);background:var(--surface);min-width:0;padding:clamp(1.25rem,.8rem + 2vw,2rem);display:grid}.account-card h2{font-family:var(--font-text);font-size:var(--step-1);font-variation-settings:normal;letter-spacing:-.01em;font-weight:700;line-height:1.25}.account-card h3{font-size:var(--step-0)}.account-card>p:not([class]){color:var(--ink-muted)}.account-card>p:not([class]) strong{color:var(--ink)}.account-form label:not(.consent){font-weight:700}.account-form>label:not(.consent){margin-block-end:calc(var(--space-2) - var(--space-4))}.account-form fieldset{gap:var(--space-3);border:0;margin:0;padding:0;display:grid}.account-form legend{color:var(--ink-muted);font-size:var(--step--1);margin-block-end:var(--space-3);padding:0;font-weight:700}.account-card>.button{justify-self:start}.consent{gap:var(--space-3);cursor:pointer;align-items:flex-start;display:flex}.consent input{width:1.25rem;height:1.25rem;accent-color:var(--rest);cursor:pointer;flex:none;margin:.15rem 0 0}.form-error{color:var(--strain);font-size:var(--step--1);font-weight:700}.form-note{color:var(--ink-muted);font-size:var(--step--1)}.link-button{min-height:44px;color:var(--rest);font:inherit;cursor:pointer;background:0 0;border:0;justify-self:start;align-items:center;padding:0;font-weight:700;text-decoration:none;display:inline-flex}.link-button+.link-button{margin-inline-start:var(--space-4)}.link-button:hover{text-underline-offset:.2em;text-decoration:underline}.button:disabled{opacity:.6;cursor:progress}.button--danger{border-color:var(--strain);color:var(--strain)}.button--danger:hover{background:var(--strain-soft)}.account-links{margin:0;padding:0;list-style:none;display:grid}.account-links li{gap:var(--space-1);padding-block:var(--space-2);border-block-end:1px solid var(--rule);display:grid}.account-links li:first-child{border-block-start:1px solid var(--rule)}.account-links a{justify-content:space-between;align-items:center;gap:var(--space-3);min-height:44px;color:var(--ink);font-weight:700;text-decoration:none;display:flex}.account-links a:after{content:"";border-block-start:2px solid var(--rest);border-inline-end:2px solid var(--rest);flex:none;width:.5em;height:.5em;margin-inline-end:.3em;transform:rotate(45deg)}.account-links a:hover{color:var(--rest)}.account-links .form-note{margin-block-start:calc(-1 * var(--space-2))}.settings{gap:var(--space-5);display:grid}.consent-row{gap:var(--space-3);padding-block:var(--space-4);border-block-start:1px solid var(--rule);display:grid}.consent-row .form-note{margin-block-start:var(--space-1);line-height:1.5;display:block}.consent-row .consent{justify-content:space-between;gap:var(--space-5);flex-direction:row-reverse}.consent-row .consent input{appearance:none;border-radius:var(--radius-pill);background-color:var(--control-border);width:48px;height:28px;transition:background-color var(--dur-fast) var(--ease);margin:0;position:relative}.consent-row .consent input:after{content:"";background:var(--surface);width:22px;height:22px;transition:background-color var(--dur-fast) var(--ease);border-radius:50%;position:absolute;top:3px;left:3px}.consent-row .consent input:checked{background-color:var(--rest)}.consent-row .consent input:checked:after{background:var(--on-rest);transform:translate(20px)}@media (prefers-reduced-motion:no-preference){.consent-row .consent input:after{transition:background-color var(--dur-fast) var(--ease), transform var(--dur-fast) var(--ease)}}.consent-row .consent input:focus-visible{outline:3px solid var(--focus);outline-offset:3px}@media (forced-colors:active){.consent-row .consent input{appearance:auto;width:1.25rem;height:1.25rem}.consent-row .consent input:after{content:none}}.confirm-box{align-items:center;gap:var(--space-3);padding:var(--space-4);border:1px solid var(--strain);border-radius:var(--radius);flex-wrap:wrap;display:flex}.confirm-box p{flex-basis:100%}.confirm-box .button{min-height:44px;font-size:var(--step--1)}.danger h2{color:var(--strain)}.reconfirm{border-color:var(--rest)}.reconfirm__terms{gap:var(--space-4);display:grid}.reconfirm__terms .button{justify-self:start}.reconfirm__item{gap:var(--space-2);border-block-start:1px solid var(--rule);padding-block-start:var(--space-3);display:grid}.reconfirm__item .form-note{margin-block-start:var(--space-1);line-height:1.5;display:block}.turnstile-slot:empty{display:none}.readings{gap:var(--space-5);display:grid}.reading-form__row{gap:var(--space-4);display:grid}@media (width>=36rem){.reading-form__row{grid-template-columns:1fr 1fr}}.reading-form__field{gap:var(--space-2);align-content:start;min-width:0;display:grid}.reading-form__actions{gap:var(--space-3) var(--space-5);flex-wrap:wrap;align-items:center;display:flex}.tag-chips{flex-wrap:wrap;gap:var(--space-2)!important;display:flex!important}.tag-chips legend{margin-block-end:var(--space-3)}.tag-chip{align-items:center;gap:var(--space-2);min-height:44px;padding:0 var(--space-3) 0 var(--space-2);font-size:var(--step--1);cursor:pointer;background:0 0;border:1px solid #0000;border-radius:6px;display:inline-flex}.tag-chip:before{content:"";border:1.5px solid var(--control-border);background:var(--surface);border-radius:4px;flex:none;width:1.1rem;height:1.1rem}.tag-chip:hover{border-color:var(--rule)}.tag-chip[aria-pressed=true]{font-weight:700}.tag-chip[aria-pressed=true]:before{border-color:var(--rest);background:var(--rest);box-shadow:inset 0 0 0 2.5px var(--surface)}@media (forced-colors:active){.tag-chip[aria-pressed=true]:before{background:canvastext}}.trend-summary{font-size:var(--step-1);font-weight:700}.trend-summary a{font-weight:400}.trend-reference{color:var(--ink-muted);font-size:var(--step--1)}.trend-chart{width:100%;min-height:260px;margin-block:var(--space-2)}.trend-chart .u-legend{color:var(--ink-muted);font-family:var(--font-text);font-size:var(--step--1);margin-block-start:var(--space-2)}.trend-chart .u-legend .u-marker{border-radius:50%}.nights-chart{gap:var(--space-3);margin-block:var(--space-2);display:grid}.nights-panel-name{color:var(--ink-muted);font-size:var(--step--1);margin:0;font-weight:700}.nights-panel-plot{width:100%;min-height:150px}.coach-terms{margin-block:var(--space-2) 0}.insights{gap:var(--space-2);border-block-start:1px solid var(--rule);padding-block-start:var(--space-4);display:grid}.insights ul{gap:var(--space-2);font-size:var(--step--1);margin:0;padding-inline-start:1.15em;display:grid}.readings-table td:last-child{white-space:nowrap}.readings-table .link-button{min-height:44px;font-size:var(--step--1)}@media (width<=40rem){.readings-table th,.readings-table td{padding-inline:var(--space-2)}.readings-table td:last-child{white-space:normal}}.admin-stats{gap:var(--space-3);grid-template-columns:repeat(auto-fill,minmax(min(100%,10rem),1fr));margin:0;display:grid}.admin-stats>div{padding-block:var(--space-2);border-block-start:1px solid var(--rule)}.admin-stats dt{color:var(--ink-muted);font-size:var(--step--1);font-weight:700}.admin-stats dd{margin:var(--space-1) 0 0;font-family:var(--font-display);font-size:var(--step-2)}.admin-users-tools{align-items:end;gap:var(--space-2) var(--space-3);flex-wrap:wrap;margin-block-end:var(--space-3);display:flex}.admin-users-tools label{gap:var(--space-1);display:grid}.hrv-test .account-card,.hrv-result .account-card{background:0 0;border:0;border-radius:0;padding:0}.hrv-test .account-card h2{font-family:var(--font-text);font-size:var(--step-1);letter-spacing:-.01em}.hrv-result .account-card{border-block-start:1px solid var(--rule);padding-block-start:var(--space-5)}.hrv-test fieldset,.hrv-save__method{gap:var(--space-2);border:0;flex-wrap:wrap;min-width:0;margin:0;padding:0;display:flex}.hrv-test legend,.hrv-save__method legend{float:left;width:100%;margin-block-end:var(--space-3);padding:0;font-weight:700}.hrv-test fieldset label,.hrv-save__method label{gap:var(--space-3);min-height:48px;padding:var(--space-2) var(--space-4);border:1px solid var(--control-border);border-radius:var(--radius);background:var(--surface);cursor:pointer;transition:border-color var(--dur-fast) var(--ease);flex:auto;align-items:center;line-height:1.35;display:inline-flex}.hrv-test fieldset label:hover,.hrv-save__method label:hover{border-color:var(--ink-muted)}.hrv-test fieldset label:has(input:checked),.hrv-save__method label:has(input:checked){border-color:var(--rest);box-shadow:inset 0 0 0 1px var(--rest);font-weight:700}.hrv-test fieldset label:has(input:focus-visible),.hrv-save__method label:has(input:focus-visible){outline:3px solid var(--focus);outline-offset:2px}.hrv-test fieldset input,.hrv-save__method input{width:1.25rem;height:1.25rem;accent-color:var(--rest);cursor:inherit;flex:none;margin:0}.hrv-test fieldset input:focus-visible,.hrv-save__method input:focus-visible{outline:none}.hrv-test fieldset:disabled label{opacity:.6;cursor:not-allowed}.hrv-live__phase,.hrv-result__kind{font-weight:700}.hrv-live,.hrv-result__metrics{gap:var(--space-3);grid-template-columns:repeat(auto-fit,minmax(8rem,1fr));margin:0;display:grid}.hrv-live dt,.hrv-result__metrics dt{font-size:var(--step--1);color:var(--ink-muted)}.hrv-live dd,.hrv-result__metrics dd{font-size:var(--step-1);margin:0}.hrv-result__metrics .hrv-result__main{grid-column:1/-1}.hrv-result__metrics .hrv-result__main dd{letter-spacing:-.03em;font-size:clamp(2.75rem,2.2rem + 2.5vw,3.75rem);font-weight:700;line-height:1.05}.hrv-live__chart{border:1px solid var(--rule);border-radius:var(--radius);background:var(--surface);width:100%;height:7.5rem}.hrv-live__axis{stroke:var(--rule)}.hrv-live__line{fill:none;stroke:var(--rest);stroke-width:2px;vector-effect:non-scaling-stroke}.hrv-camera{gap:var(--space-4);align-items:center;display:flex}.hrv-camera__preview{border:1px solid var(--rule);object-fit:cover;background:var(--paper);border-radius:50%;flex:none;width:4.5rem;height:4.5rem}.hrv-camera__finger[data-finger=covered]{color:var(--rest);font-weight:700}.hrv-result>h2{font-family:var(--font-text);font-size:var(--step-2);letter-spacing:-.02em}.hrv-result h2:focus{outline:none}.hrv-result ul{gap:var(--space-2);margin:0;padding-inline-start:1.15em;display:grid}.hrv-norms__form,.hrv-norms [role=status]{gap:var(--space-3);display:grid}.hrv-norms__form{gap:var(--space-4)}.hrv-norms__form :is(input,select){border:1px solid var(--control-border);border-radius:var(--radius);background-color:var(--surface);width:100%;min-height:48px;color:var(--ink);padding:0 .9rem}.hrv-norms__form :is(input,select):focus-visible{border-color:var(--rest);outline:3px solid var(--focus);outline-offset:1px}.tool-privacy{color:var(--ink-muted);font-size:var(--step--1)}.hrv-calc{gap:var(--space-5);display:grid}.hrv-calc__text{min-height:11rem;font-family:var(--font-data);font-size:var(--step--1)}.hrv-calc__file{padding-block:.6rem}.hrv-calc__file::file-selector-button{border:1px solid var(--control-border);border-radius:calc(var(--radius) - 4px);background:var(--mist);color:var(--ink);font:inherit;cursor:pointer;margin-inline-end:var(--space-3);padding:.35rem .8rem}.hrv-calc__warnings{padding-block:var(--space-3);border-block:1px solid var(--strain)}.hrv-result__unit{font-size:var(--step-1);letter-spacing:0;font-weight:400}.hrv-calc__chart{gap:var(--space-3);border-block-start:1px solid var(--rule);padding-block-start:var(--space-5);display:grid}.hrv-calc__chart h3{font-family:var(--font-text);font-size:var(--step-1);letter-spacing:-.01em}.hrv-poincare{width:100%;max-width:24rem;height:auto}.hrv-poincare__frame{fill:var(--surface);stroke:var(--rule)}.hrv-poincare__identity{stroke:var(--ink-muted);stroke-dasharray:4 4}.hrv-poincare__point{fill:var(--rest);fill-opacity:.45}.hrv-poincare__ellipse{fill:none;stroke:var(--strain);stroke-width:2px}.hrv-poincare__tick,.hrv-poincare__axis{fill:var(--ink-muted);font-family:var(--font-data);font-size:11px}.hrv-poincare__axis{fill:var(--ink)}.hrv-calc__short{color:var(--ink-muted);font-size:var(--step--1);margin:0;line-height:1.5}.hrv-result__metrics dd.hrv-calc__short{font-size:var(--step--1)}.hrv-result__sub{color:var(--ink-muted);font-size:var(--step--1);display:block}.hrv-calc__formula{min-width:0;max-width:100%;padding:var(--space-2) var(--space-3);border-radius:var(--radius);background:var(--mist);contain:inline-size;overflow-x:auto}.hrv-calc__formula math[display=block]{margin-block:0}.hrv-calc__reading{color:var(--ink-muted);font-size:var(--step--1);line-height:1.55}.hrv-hist,.hrv-spec,.hrv-dfa{border:1px solid var(--rule);border-radius:var(--radius);background:var(--surface);width:100%;max-width:24rem;height:auto}.hrv-hist__axis,.hrv-spec__axis,.hrv-dfa__axis{stroke:var(--rule)}.hrv-hist__bar{fill:var(--rest);fill-opacity:.55}.hrv-hist__triangle{fill:none;stroke:var(--strain);stroke-width:2px;stroke-linejoin:round}.hrv-hist__tick,.hrv-spec__tick,.hrv-spec__name,.hrv-dfa__tick{fill:var(--ink-muted);font-family:var(--font-data);font-size:11px}.hrv-spec__name{fill:var(--ink);font-weight:700}.hrv-spec__band{fill:var(--rest)}.hrv-spec__band--ulf{fill-opacity:.04}.hrv-spec__band--vlf{fill-opacity:.08}.hrv-spec__band--lf{fill-opacity:.16}.hrv-spec__band--hf{fill-opacity:.26}.hrv-spec__line{fill:none;stroke:var(--ink);stroke-width:1.5px;stroke-linejoin:round;vector-effect:non-scaling-stroke}.hrv-dfa__point{fill:var(--rest)}.hrv-dfa__fit{stroke-width:2px;stroke-linecap:round}.hrv-dfa__fit--1{stroke:var(--strain)}.hrv-dfa__fit--2{stroke:var(--ink-muted)}[data-readout]{touch-action:pan-y;cursor:crosshair}[data-readout]:focus-visible{outline:3px solid var(--focus);outline-offset:2px}.chart-readout{pointer-events:none}.chart-readout__line{stroke:var(--ink-muted);stroke-width:1px;stroke-dasharray:2 2;vector-effect:non-scaling-stroke}.chart-readout__dot{fill:var(--ink);stroke:var(--surface);stroke-width:1.5px}.chart-readout__box{fill:var(--surface);stroke:var(--control-border);stroke-width:1px;vector-effect:non-scaling-stroke}.chart-readout__text{fill:var(--ink);font-family:var(--font-data);dominant-baseline:central;font-variant-numeric:tabular-nums}.hrv-test__about{gap:var(--space-3);display:grid}.resonance-pacer{gap:var(--space-2);padding-block:var(--space-3);text-align:center;justify-items:center;display:grid}.resonance-pacer__stage{border:1px solid var(--rule);background:var(--surface);border-radius:50%;place-items:center;width:10rem;height:10rem;display:grid}.resonance-pacer__circle{border:3px solid var(--rest);background:var(--rest-soft);border-radius:50%;width:9rem;height:9rem;transition-property:transform;transition-timing-function:ease-in-out}.resonance-pacer__circle--in{transform:scale(1)}.resonance-pacer__circle--out{transform:scale(.4)}.resonance-pacer__cue{font-family:var(--font-display);font-size:var(--step-2)}.resonance-pacer__count{min-width:2ch;color:var(--rest);display:inline-block}@media (prefers-reduced-motion:reduce){.resonance-pacer__circle{transition:none}}.hrv-table-wrap{max-width:100%;overflow-x:auto}.hrv-table-wrap:focus-visible{outline:3px solid var(--focus);outline-offset:2px}.hrv-table{border-collapse:collapse;width:100%;font-size:var(--step--1)}.hrv-table caption{color:var(--ink-muted);text-align:start;margin-block-end:var(--space-2)}.hrv-table th,.hrv-table td{padding:var(--space-2) var(--space-3) var(--space-2) 0;border-block-end:1px solid var(--rule);text-align:start;vertical-align:top}.hrv-table thead th{border-block-end-color:var(--ink);font-weight:700}.hrv-table tbody th{font-weight:400}.hrv-table .hrv-table__best>*{color:var(--rest);font-weight:700}.athletes{margin:0;padding:0;list-style:none;display:grid}.athletes li{gap:var(--space-2);padding-block:var(--space-4);border-block-end:1px solid var(--rule);display:grid}.athletes li:first-child{padding-block-start:0}.athletes li:last-child{border-block-end:0;padding-block-end:0}.athletes p{margin:0}.athletes__head{align-items:center;gap:var(--space-2) var(--space-3);overflow-wrap:anywhere;flex-wrap:wrap;display:flex}.athletes__live{border-radius:var(--radius-pill);background:var(--rest-soft);color:var(--rest);font-size:var(--step--1);align-items:center;gap:.4em;padding:.1em .6em;font-weight:700;display:inline-flex}.athletes__live:before{content:"";background:currentColor;border-radius:50%;width:.5em;height:.5em}.team{gap:var(--space-3);min-width:0;display:grid}.team>*{margin:0}.team__controls{align-items:end;gap:var(--space-3);flex-wrap:wrap;display:flex}.team__controls>div{gap:var(--space-1);display:grid}.team__controls label{font-size:var(--step--1);font-weight:700}.team__controls select{min-width:12rem}.team__rows{margin:0;padding:0;list-style:none;display:grid;container:team/inline-size}.team-row{gap:var(--space-3);padding-block:var(--space-4);border-block-end:1px solid var(--rule);min-width:0;display:grid}.team-row:last-child{border-block-end:0;padding-block-end:0}.team-row p{margin:0}.team-row__who{align-items:center;gap:var(--space-1) var(--space-3);overflow-wrap:anywhere;flex-wrap:wrap;display:flex}.team-row__name{font-size:var(--step-1)}.team-row__email{flex-basis:100%;order:1}.team-row__facts{gap:var(--space-1);font-size:var(--step--1);min-width:0;display:grid}.team-row__chart{min-width:0}.team-row__actions .form-actions{align-items:center;gap:var(--space-3);flex-wrap:wrap;display:flex}.team-row__label{max-width:26rem}@container team (width>=40rem){.team-row{align-items:start;column-gap:var(--space-4);grid-template-columns:minmax(10rem,13rem) minmax(0,1fr) minmax(9rem,12rem);grid-template-areas:"who facts chart""actions facts chart"}.team-row__who{flex-direction:column;grid-area:who;align-items:start}.team-row__email{order:0}.team-row__facts{grid-area:facts}.team-row__chart{grid-area:chart}.team-row__actions{grid-area:actions}}.team-chip{max-width:100%;font-size:var(--step--1);border:1px solid;border-radius:.9em;padding:.15em .7em;font-weight:700;display:inline-block}.team-chip--below{background:var(--strain-soft);color:var(--strain)}.team-chip--within{background:var(--rest-soft);color:var(--rest)}.team-chip--above{background:var(--calm-soft);color:var(--calm)}.team-chip--building,.team-chip--none{background:var(--mist);color:var(--ink-muted)}.team-spark{width:100%;max-width:15rem;height:auto;display:block;overflow:visible}.team-spark__band{fill:var(--rest-soft);stroke:none}.team-spark__baseline{fill:none;stroke:var(--rest);stroke-width:1.5px}.team-spark__dot{fill:var(--ink)}@media (forced-colors:active){.team-chip{forced-color-adjust:none;color:canvastext;background:canvas;border-color:canvastext}.team-spark__band{fill:canvas;stroke:graytext}.team-spark__baseline{stroke:canvastext}.team-spark__dot{fill:canvastext}}.account-narrow{max-width:32rem}.overview,.overview__todo{gap:var(--space-5);min-width:0;display:grid}.overview__todo:not(:has(.account-card)){display:none}.overview-live h2{align-items:center;gap:var(--space-3);display:flex}.overview-live__dot{background:var(--rest);width:.6rem;height:.6rem;box-shadow:0 0 0 4px var(--rest-soft);border-radius:50%;flex:none}@media (forced-colors:active){.overview-live__dot{forced-color-adjust:none;background:canvastext}}.overview-live>.button,.overview .account-card>.button{justify-self:start}.overview-figure{gap:var(--space-1);display:grid}.overview-figure__label{color:var(--ink-muted);font-size:var(--step--1);font-weight:700}.overview-figure__value{font-family:var(--font-data);font-size:var(--step-4);line-height:1.1}.overview-chart{gap:var(--space-2);min-width:0;display:grid}.overview-chart .trend-chart{min-height:170px}.overview-more{justify-self:start;font-weight:700}.overview-recordings{margin:0;padding:0;list-style:none;display:grid}.overview-recordings li{gap:var(--space-1);padding-block:var(--space-3);border-block-end:1px solid var(--rule);display:grid}.overview-recordings li:first-child{border-block-start:1px solid var(--rule)}.overview-recordings__when{font-weight:700}.overview-help details{border-block-end:1px solid var(--rule)}.overview-help details:first-child{border-block-start:1px solid var(--rule)}.overview-help summary{justify-content:space-between;align-items:center;gap:var(--space-3);cursor:pointer;min-height:48px;font-weight:700;list-style:none;display:flex}.overview-help summary::-webkit-details-marker{display:none}.overview-help summary:after{content:"";border-block-end:2px solid var(--rest);border-inline-end:2px solid var(--rest);width:.5em;height:.5em;transition:transform var(--dur-fast) var(--ease);flex:none;margin-inline-end:.3em;transform:rotate(45deg)}.overview-help details[open]>summary:after{transform:rotate(-135deg)}.overview-help summary:hover{color:var(--rest)}.overview-help details>p{color:var(--ink-muted);padding-block-end:var(--space-4)}.recording-view{gap:var(--space-3);display:grid}.recording-view__back{margin:0}.recording-view__facts{gap:var(--space-2) var(--space-3);margin:var(--space-2) 0;grid-template-columns:repeat(auto-fit,minmax(8rem,1fr));display:grid}.recording-view__facts div{flex-direction:column;justify-content:space-between;gap:.15rem;display:flex}.recording-view__facts dt{color:var(--ink-muted);font-size:var(--step--1)}.recording-view__facts dd{font-variant-numeric:tabular-nums;margin:0;font-weight:600}.recording-chart{width:100%;min-height:260px;margin-block:var(--space-2)}.recording-chart .u-legend{color:var(--ink-muted);font-family:var(--font-text);font-size:var(--step--1);margin-block-start:var(--space-2)}.recording-view__app h3{margin-block-start:var(--space-3)}.cert-tab{gap:var(--space-6);display:grid}.cert-field{gap:var(--space-1);display:grid}.cert-field label{font-weight:700}.cert-field__hint{color:var(--ink-muted);font-size:var(--step--1);margin:0}.cert-form{gap:var(--space-4);display:grid}.cert-photo{gap:var(--space-4);grid-template-columns:auto minmax(0,1fr);align-items:start;display:grid}.cert-photo__slot{background:var(--wash-warm);width:88px;height:88px;color:var(--ink-muted);font-family:var(--font-data);border-radius:50%;place-items:center;font-size:1.6rem;font-weight:500;display:grid;overflow:hidden}.cert-photo__slot img{object-fit:cover;width:100%;height:100%}.cert-photo__body{gap:var(--space-2);display:grid}.cert-photo__title{margin:0;font-weight:700}.cert-photo__pick{cursor:pointer}.cert-photo__pick:focus-within{outline:2px solid var(--focus);outline-offset:2px}.cert-crop{gap:var(--space-3);padding:var(--space-4);border-radius:var(--radius);background:var(--mist);justify-items:start;display:grid}.cert-crop h3{margin:0}.cert-crop__help{color:var(--ink-muted);font-size:var(--step--1);margin:0}.cert-crop__frame{aspect-ratio:1;border-radius:var(--radius);touch-action:none;cursor:grab;background:#000;width:min(280px,100%);position:relative;overflow:hidden}.cert-crop__frame:active{cursor:grabbing}.cert-crop__frame:focus-visible{outline:3px solid var(--focus);outline-offset:3px}.cert-crop__frame img{user-select:none;pointer-events:none;max-width:none;position:absolute}.cert-crop__ring{outline-offset:-2px;pointer-events:none;border-radius:50%;outline:2px solid #ffffffd9;position:absolute;inset:0;box-shadow:0 0 0 999px #00000080}.cert-crop__zoom{align-items:center;gap:var(--space-3);width:min(280px,100%);display:flex}.cert-crop__zoom input{accent-color:var(--rest);flex:1}.cert-camera__frame{cursor:default}.cert-camera__frame[hidden]{display:none}.cert-camera__video{object-fit:cover;width:100%;height:100%;position:absolute;inset:0}.cert-camera__video--mirrored{transform:scaleX(-1)}.cert-camera__status{inset:auto 0 var(--space-3);color:#fff;font-size:var(--step--1);text-align:center;position:absolute}.cert-camera__status:empty{display:none}.cert-camera h3:focus{outline:none}.cert-camera h3:focus-visible{outline:2px solid var(--focus);outline-offset:2px}.cert-levels{gap:var(--space-4);display:grid}.cert-levels>h2{font-size:var(--step-2)}.cert-levels__rule{max-width:46rem;color:var(--ink-muted);margin:0}.cert-levels__grid{gap:var(--space-4);display:grid}@media (width>=46rem){.cert-levels__grid{grid-template-columns:repeat(2,minmax(0,1fr))}}.cert-level{gap:var(--space-3);min-width:0;padding:var(--space-5);border:1px solid var(--rule);border-radius:var(--radius);background:var(--surface);align-content:start;display:grid}.cert-level--passed{border-color:color-mix(in srgb, #8e6d33 45%, var(--rule))}.cert-level__head{gap:var(--space-1);display:grid}.cert-level__head h3{font-size:var(--step-1);margin:0}.cert-level__lessons,.cert-level__state{font-family:var(--font-data);font-size:var(--step--1);color:var(--ink-muted);margin:0}.cert-level--passed .cert-level__state{color:var(--rest);font-weight:700}.cert-level__exam{gap:var(--space-2);justify-items:start;display:grid}.cert-picture{box-shadow:var(--shadow-card);border-radius:4px;overflow:hidden}.cert-picture svg{width:100%;height:auto;display:block}.cert-facts{gap:var(--space-2) var(--space-5);flex-wrap:wrap;margin:0;display:flex}.cert-facts dt{font-family:var(--font-data);letter-spacing:.14em;text-transform:uppercase;color:var(--ink-muted);font-size:.75rem;font-weight:600}.cert-facts dd{margin:0}.cert-publish{gap:var(--space-2);border-block-start:1px solid var(--rule);padding-block-start:var(--space-3);display:grid}.cert-publish__switch{gap:var(--space-3);cursor:pointer;grid-template-columns:auto minmax(0,1fr);align-items:start;display:grid}.cert-publish__switch input{appearance:none;border:1px solid var(--control-border);background:var(--mist);cursor:pointer;border-radius:999px;flex:none;width:2.75rem;height:1.6rem;margin:0;transition:background .15s;position:relative}.cert-publish__switch input:after{content:"";background:var(--ink-muted);border-radius:50%;width:calc(1.6rem - 6px);height:calc(1.6rem - 6px);transition:transform .15s;position:absolute;inset-block-start:2px;inset-inline-start:2px}.cert-publish__switch input:checked{border-color:var(--rest);background:var(--rest)}.cert-publish__switch input:checked:after{background:var(--on-rest);transform:translate(1.15rem)}.cert-publish__switch input:focus-visible{outline:3px solid var(--focus);outline-offset:2px}.cert-publish__switch input:disabled{opacity:.6}.cert-publish__switch span{font-size:var(--step--1)}@media (prefers-reduced-motion:reduce){.cert-publish__switch input,.cert-publish__switch input:after{transition:none}}.cert-downloads{gap:var(--space-2);display:grid}.cert-downloads__label{margin:0;font-weight:700}.cert-downloads__row{gap:var(--space-2);flex-wrap:wrap;display:flex}.cert-withdrawn{padding:var(--space-3) var(--space-4);border-inline-start:3px solid var(--strain);background:var(--strain-soft);margin:0}.cert-exam__bar{justify-content:space-between;gap:var(--space-2) var(--space-4);flex-wrap:wrap;display:flex}.cert-exam__title,.cert-exam__clock{font-family:var(--font-data);font-size:var(--step--1);color:var(--ink-muted);margin:0}.cert-exam__clock strong{color:var(--ink);font-size:var(--step-0)}.cert-exam__progress{background:var(--mist);border-radius:3px;height:6px;overflow:hidden}.cert-exam__progress span{background:var(--rest);height:100%;display:block}.cert-exam__question{gap:var(--space-3);border:0;margin:0;padding:0;display:grid}.cert-exam__question legend{gap:var(--space-2);margin-block-end:var(--space-3);padding:0;display:grid}.cert-exam__count{font-family:var(--font-data);font-size:var(--step--1);letter-spacing:.12em;text-transform:uppercase;color:var(--ink-muted);margin:0;font-weight:600}.cert-exam__q{font-family:var(--font-reading);font-size:var(--step-2);line-height:1.35}.cert-exam__option{gap:var(--space-3);padding:var(--space-3) var(--space-4);border:1px solid var(--rule);border-radius:var(--radius);font-family:var(--font-reading);cursor:pointer;grid-template-columns:auto minmax(0,1fr);align-items:start;display:grid}.cert-exam__option:has(input:checked){border-color:var(--rest);background:var(--rest-soft)}.cert-exam__option input{accent-color:var(--rest);margin-block-start:.25em}.cert-exam__jump{gap:var(--space-1);flex-wrap:wrap;display:flex}.cert-exam__dot{border:1px solid var(--rule);border-radius:var(--radius);background:var(--surface);min-width:44px;min-height:44px;color:var(--ink-muted);font-family:var(--font-data);cursor:pointer}.cert-exam__dot.is-answered{border-color:var(--rest);color:var(--ink)}.cert-exam__dot.is-current{outline:2px solid var(--ink);outline-offset:1px}.cert-exam__score{font-size:var(--step-1);margin:0}.cert-exam__review{margin:0;padding-inline-start:1.2em}.cert-preview{--cert-brass:#7a5d2a;--cert-brass-line:#a88a4f;--cert-brass-wash:#f6eedc;gap:var(--space-5);min-width:0;margin:0;display:grid}.cert-preview>*{min-width:0}.cert-preview__steps{margin-block-start:var(--space-3)}@media (width>=60rem){.cert-preview:not(.cert-preview--compact){gap:var(--space-6) var(--space-7);grid-template-columns:minmax(0,1.75fr) minmax(16rem,1fr);grid-template-areas:"card steps""badges you";align-items:start}.cert-preview:not(.cert-preview--compact)>.cert-preview__frame{grid-area:card}.cert-preview:not(.cert-preview--compact)>.cert-preview__you{grid-area:you}.cert-preview:not(.cert-preview--compact)>.cert-badges{grid-area:badges}.cert-preview__steps{grid-area:steps;margin-block-start:.7rem}}.cert-preview__frame{padding-block-start:.7rem;position:relative}.cert-preview__card{border-radius:4px;overflow:hidden;box-shadow:0 1px 2px #13261f14,0 18px 40px -18px #13261f59}.cert-preview__card svg{width:100%;height:auto;display:block}.cert-preview__theme--dark{display:none}.cert-preview__tag{z-index:1;border:1px solid var(--cert-brass-line);border-radius:var(--radius-pill);background:var(--surface);color:var(--cert-brass);font-family:var(--font-data);letter-spacing:.14em;text-transform:uppercase;padding:.2rem .65rem;font-size:.6875rem;font-weight:600;line-height:1.3;position:absolute;inset-block-start:0;inset-inline-start:1.25rem}.cert-preview__you{gap:var(--space-2);display:grid}.cert-preview__label{font-weight:700}.cert-preview__inputs{align-items:center;gap:var(--space-2) var(--space-3);flex-wrap:wrap;display:flex}.cert-preview__name{width:auto;min-width:0;font-family:var(--font-data);font-size:var(--step-1);letter-spacing:-.03em;flex:14rem;font-weight:300}.cert-preview__hint,.cert-preview__status{color:var(--ink-muted);font-size:var(--step--1);margin:0}.cert-preview__status:empty{display:none}.cert-badges{gap:var(--space-3);display:grid}.cert-badges__label{color:var(--ink-muted);font-family:var(--font-data);letter-spacing:.12em;text-transform:uppercase;margin:0;font-size:.75rem;font-weight:600}.cert-badges__list{gap:var(--space-3);grid-template-columns:repeat(4,minmax(0,1fr));margin:0;padding:0;list-style:none;display:grid}.cert-badge{align-content:start;justify-items:center;gap:var(--space-1);text-align:center;min-width:0;display:grid}.cert-badge__text{color:var(--ink-muted);font-family:var(--font-data);overflow-wrap:break-word;font-size:.75rem;line-height:1.35}.cert-badge--ready .cert-badge__text,.cert-badge--earned .cert-badge__text{color:var(--ink)}.cert-seal{width:3.5rem;height:3.5rem;display:block;overflow:visible}.cert-seal__outer,.cert-seal__face{fill:none;stroke:var(--control-border);stroke-width:1.2px}.cert-seal__outer{stroke-dasharray:2 3}.cert-seal__dot{fill:var(--control-border)}.cert-seal__n{fill:var(--ink-muted);font-family:var(--font-data);letter-spacing:-.04em;font-size:22px;font-weight:300}.cert-seal__bar{fill:var(--rule)}.cert-badge--ready .cert-seal__outer,.cert-badge--ready .cert-seal__face,.cert-badge--earned .cert-seal__outer,.cert-badge--earned .cert-seal__face{stroke:var(--cert-brass-line);stroke-dasharray:none}.cert-badge--ready .cert-seal__dot,.cert-badge--earned .cert-seal__dot{fill:var(--cert-brass-line)}.cert-badge--ready .cert-seal__n,.cert-badge--earned .cert-seal__n{fill:var(--ink)}.cert-badge--earned .cert-seal__face{fill:var(--cert-brass-wash)}.cert-badge--earned .cert-seal__bar{fill:var(--rest)}.cert-badges__lessons{align-items:center;gap:var(--space-3);font-family:var(--font-data);font-size:var(--step--1);grid-template-columns:auto minmax(0,1fr);display:grid}.cert-bar{border-radius:var(--radius-pill);background:var(--rule);height:6px;display:block;overflow:hidden}.cert-bar__fill{border-radius:inherit;background:var(--rest);height:100%;display:block}.cert-preview__steps{gap:var(--space-4);padding:var(--space-5);border:1px solid var(--rule);border-radius:var(--radius);background:var(--surface);align-content:start;display:grid}.cert-preview__steps h3{font-size:var(--step-1)}.cert-steps{gap:var(--space-3);margin:0;padding:0;list-style:none;display:grid}.cert-step{gap:var(--space-3);font-family:var(--font-data);font-size:var(--step--1);grid-template-columns:1.25rem minmax(0,1fr);align-items:start;line-height:1.45;display:grid}.cert-step__mark{fill:none;width:1.25rem;height:1.25rem;stroke:var(--control-border);stroke-width:1.5px}.cert-step--done .cert-step__mark{stroke:var(--rest)}.cert-step--done .cert-step__mark circle{fill:var(--rest)}.cert-step--done .cert-step__mark path{stroke:var(--on-rest);stroke-width:2px;stroke-linecap:round;stroke-linejoin:round}.cert-step__hint{color:var(--ink-muted);font-family:var(--font-reading);display:block}.cert-preview__actions{gap:var(--space-3);flex-wrap:wrap;margin:0;display:flex}.cert-preview__about{font-size:var(--step--1);justify-self:start}.cert-preview--compact{gap:var(--space-2);max-width:22rem}.cert-preview--compact .cert-preview__tag{font-size:.625rem;inset-inline-start:.75rem}.cert-preview__caption{gap:var(--space-2);font-size:var(--step--1);color:var(--ink-muted);display:grid}.cert-preview__progress{font-family:var(--font-data)}.cert-badges--compact .cert-badges__list{gap:var(--space-2);display:flex}.cert-badges--compact .cert-seal{width:2rem;height:2rem}@media (prefers-color-scheme:dark){:root:not([data-theme=light]) .cert-preview{--cert-brass:#c8a35f;--cert-brass-line:#a88a4f;--cert-brass-wash:#2a2416}:root:not([data-theme=light]) .cert-preview__theme--light{display:none}:root:not([data-theme=light]) .cert-preview__theme--dark{display:block}}:root[data-theme=dark] .cert-preview{--cert-brass:#c8a35f;--cert-brass-line:#a88a4f;--cert-brass-wash:#2a2416}:root[data-theme=dark] .cert-preview__theme--light{display:none}:root[data-theme=dark] .cert-preview__theme--dark{display:block}@media print{:root{--print-body:10.5pt;--paper:#fff!important;--surface:#fff!important;--ink:#000!important;--ink-muted:#3a3a3a!important;--rule:#c8c8c8!important;--rest:#1f6b4c!important;--rest-soft:#fff!important;--on-rest:#fff!important;--strain:#8a5200!important;--strain-soft:#fff!important;--wash:#fff!important;--wash-warm:#fff!important;--mist:#f2f2f2!important;--shadow-card:none!important;--shadow-pop:none!important;color-scheme:light!important}@page{margin:16mm 16mm 18mm}body{font-size:var(--print-body);orphans:3;widows:3;line-height:1.5}.skip-link,.site-header,.site-footer,.breadcrumbs-wrap,.article__rail,.article__after,.print-action,.share,.share-jump,.no-js-note,.signup,.related,.try-it,.lesson__nav,.glow,.gloss__pop,.theme-toggle,.menu-toggle,form,astro-island :is(button,input,select,textarea,[role=slider]),.age-chart__metrics,.age-chart__you,figure.diagram:has(>.diagram__art :is(input,button,select,textarea,[role=slider])),.pacer-widget,.figure-lead{display:none!important}.print-source{color:var(--ink-muted);font-family:var(--font-text);overflow-wrap:anywhere;font-size:8pt;line-height:1.4;display:block!important}.print-source:not(.print-source--end){border-block-end:.5pt solid var(--rule);padding-block-end:.6em}.print-source--end{border-block-start:.5pt solid var(--rule);padding-block-start:.6em;margin-block-start:1.6em!important}.wrap{width:100%}.article,.page{padding:0!important}.article__grid,.article__main,.faq,.faq__list,.sources{max-width:none!important;display:block!important}.article__main>*+*,.faq__list,.sources ol{margin-block-start:1.4em!important}.faq__item{padding-block:.8em!important}.article__takeaways{margin-block-end:0!important}.article__head{max-width:none!important;margin-block-end:1.2em!important}.article__head h1,.page__head h1{font-size:20pt!important}.article__summary{font-size:12pt!important}.prose{max-width:none;line-height:1.55}.prose,.prose table,.takeaways li,.faq p,.faq h3,.lesson-card,.sources,.key-box,.myth__claim{font-size:var(--print-body)!important}h2,.prose h2,.faq h2,.sources h2{margin-block-start:1.6em;font-size:14pt!important}.prose h3,.faq h3{font-size:11.5pt!important}.takeaways__title{font-size:12pt!important}h1,h2,h3,h4{break-after:avoid}figure,tr,.faq__item,.sources li,.print-source{break-inside:avoid}details::details-content{content-visibility:visible;block-size:auto;display:block}details>:not(summary){display:block!important}details>summary{list-style:none}details>summary::-webkit-details-marker{display:none}.go-deeper__chevron,.toc--fold{display:none!important}.table-scroll,.katex:has(>math[display=block]),.formula:has(math[display=block]){background:0 0!important;overflow:visible!important}a{color:inherit}.sources a:after{content:" " attr(href);color:var(--ink-muted);overflow-wrap:anywhere;font-size:8.5pt}}.wordmark[data-astro-cid-qisgtjgl]{min-height:44px;color:var(--ink);align-items:center;gap:.45rem;text-decoration:none;display:inline-flex}.wordmark__mark[data-astro-cid-qisgtjgl]{width:2.6rem;height:auto;overflow:visible}.wordmark__trace[data-astro-cid-qisgtjgl]{fill:none;stroke:var(--ink);stroke-linecap:round;stroke-linejoin:round}.wordmark__interval[data-astro-cid-qisgtjgl]{fill:var(--rest)}.wordmark__text[data-astro-cid-qisgtjgl]{font-family:var(--font-display);letter-spacing:-.04em;font-size:1.15rem;font-weight:700;line-height:1}.wordmark__tld[data-astro-cid-qisgtjgl]{color:var(--ink-muted);font-weight:400}.site-header[data-astro-cid-nen7h5rs]{--header-fits:75rem;z-index:50;background:var(--paper);border-block-end:1px solid var(--rule);font-size:calc(var(--header-fits) / 16);position:sticky;inset-block-start:0;container:site-header/inline-size}.site-header[data-astro-cid-nen7h5rs]:lang(de){--header-fits:79.25rem}.site-header[data-astro-cid-nen7h5rs]:lang(it){--header-fits:85.25rem;--header-page:80rem}.site-header[data-astro-cid-nen7h5rs]:lang(ru){--header-fits:85.75rem;--header-page:80.5rem}.site-header[data-astro-cid-nen7h5rs]:lang(pt){--header-fits:86.25rem;--header-page:81.25rem}.site-header[data-astro-cid-nen7h5rs]:lang(es){--header-fits:91.75rem;--header-page:86.5rem}.site-header[data-astro-cid-nen7h5rs]:lang(fr){--header-fits:92rem;--header-page:86.75rem}.site-header__bar[data-astro-cid-nen7h5rs]{justify-content:space-between;align-items:center;gap:var(--space-3) var(--space-5);width:min(100% - 2 * var(--gutter), var(--header-page,var(--page)));min-height:72px;padding-block:var(--space-2);font-size:var(--step-0);flex-wrap:wrap;display:flex}.site-nav[data-astro-cid-nen7h5rs]{justify-content:space-between;align-items:center;gap:var(--space-3) var(--space-4);flex:1;display:flex}nav[data-astro-cid-nen7h5rs] ul[data-astro-cid-nen7h5rs]{gap:var(--space-1) var(--space-1);margin:0;padding:0;list-style:none;display:flex}nav[data-astro-cid-nen7h5rs] a[data-astro-cid-nen7h5rs]{min-height:44px;font-size:var(--step--1);color:var(--ink);white-space:nowrap;text-underline-offset:.35em;align-items:center;padding:0 .5rem;font-weight:600;text-decoration:none;display:inline-flex}nav[data-astro-cid-nen7h5rs] a[data-astro-cid-nen7h5rs]:hover{color:var(--rest);text-decoration:underline}nav[data-astro-cid-nen7h5rs] a[data-astro-cid-nen7h5rs][aria-current=page]{color:var(--rest);text-decoration:underline 2px}.site-nav__actions[data-astro-cid-nen7h5rs]{align-items:center;gap:var(--space-3);display:flex}.account-link[data-astro-cid-nen7h5rs]{min-height:44px;font-size:var(--step--1);white-space:nowrap;align-items:center;font-weight:700;text-decoration:none;display:inline-flex}.site-header__cta[data-astro-cid-nen7h5rs]{white-space:nowrap}.account-link[data-astro-cid-nen7h5rs][hidden]{display:none}.account-menu[data-astro-cid-nen7h5rs]{position:relative}.account-menu__toggle[data-astro-cid-nen7h5rs]{min-height:44px;color:var(--rest);font:inherit;font-size:var(--step--1);white-space:nowrap;cursor:pointer;background:0 0;border:0;align-items:center;gap:.5em;padding:0;font-weight:700;display:inline-flex}.account-menu__toggle[data-astro-cid-nen7h5rs]:after{content:"";border-block-end:2px solid;border-inline-end:2px solid;width:.4em;height:.4em;margin-block-start:-.2em;transform:rotate(45deg)}.account-menu__toggle[data-astro-cid-nen7h5rs][aria-expanded=true]:after{margin-block-start:.2em;transform:rotate(-135deg)}.account-menu__toggle[data-astro-cid-nen7h5rs]:hover{text-decoration:underline}.account-menu__panel[data-astro-cid-nen7h5rs]{z-index:60;justify-items:start;gap:var(--space-1);min-width:15rem;max-width:min(22rem, 100vw - 2 * var(--gutter));padding:var(--space-4);border:1px solid var(--rule);border-radius:var(--radius);background:var(--surface);box-shadow:var(--shadow-pop);font-size:var(--step--1);display:grid;position:absolute;inset-block-start:calc(100% + var(--space-4));inset-inline-end:0}.account-menu__panel[data-astro-cid-nen7h5rs][hidden]{display:none}.account-menu__email[data-astro-cid-nen7h5rs]{margin:0 0 var(--space-2);color:var(--ink-muted);overflow-wrap:anywhere}.account-menu__panel[data-astro-cid-nen7h5rs] a[data-astro-cid-nen7h5rs],.account-menu__panel[data-astro-cid-nen7h5rs] .link-button[data-astro-cid-nen7h5rs]{align-items:center;min-height:44px;font-weight:700;display:inline-flex}.account-link[data-astro-cid-nen7h5rs]:hover{text-decoration:underline}.menu-toggle{border:1.5px solid var(--rule);border-radius:var(--radius-pill);background:var(--surface);min-height:44px;color:var(--ink);cursor:pointer;padding:0 1.1rem;font-weight:700;display:none}@container site-header (width<16em){html.js .menu-toggle{display:inline-block}html.js .site-nav[data-astro-cid-nen7h5rs]:not([data-open=true]){display:none}.site-nav[data-astro-cid-nen7h5rs]{padding-block:var(--space-2) var(--space-5);flex-direction:column;flex-basis:100%;align-items:stretch}nav[data-astro-cid-nen7h5rs] ul[data-astro-cid-nen7h5rs]{flex-direction:column}nav[data-astro-cid-nen7h5rs] a[data-astro-cid-nen7h5rs]{min-height:48px;font-size:var(--step-1);padding-inline:0;display:flex}.site-nav__actions[data-astro-cid-nen7h5rs]{align-items:stretch;gap:var(--space-3);flex-direction:column}.account-link[data-astro-cid-nen7h5rs]{justify-content:center;min-height:48px}.account-menu__toggle[data-astro-cid-nen7h5rs]{justify-content:center;width:100%;min-height:48px}.account-menu__panel[data-astro-cid-nen7h5rs]{min-width:0;max-width:none;box-shadow:none;margin-block-start:var(--space-2);position:static}.site-header__cta[data-astro-cid-nen7h5rs]{min-height:48px}}.site-footer[data-astro-cid-jo6i4kqk]{padding-block:var(--space-7) var(--space-5);border-block-start:1px solid var(--rule);color:var(--ink-muted);font-size:var(--step--1);margin-block-start:var(--space-9)}.site-footer__inner[data-astro-cid-jo6i4kqk]{gap:var(--space-7);display:grid}.site-footer__top[data-astro-cid-jo6i4kqk]{gap:var(--space-6);display:grid}@media (width>=60rem){.site-footer__top[data-astro-cid-jo6i4kqk]{gap:var(--space-7);grid-template-columns:minmax(14rem,1fr) 3fr}}.site-footer__brand[data-astro-cid-jo6i4kqk]{align-content:start;gap:var(--space-3);max-width:22rem;display:grid}.site-footer__columns[data-astro-cid-jo6i4kqk]{gap:var(--space-5) var(--space-4);grid-template-columns:repeat(2,minmax(0,1fr));display:grid}@media (width>=48rem){.site-footer__columns[data-astro-cid-jo6i4kqk]{gap:var(--space-6);grid-template-columns:repeat(4,minmax(0,1fr))}}h2[data-astro-cid-jo6i4kqk]{color:var(--ink);font-family:var(--font-text);font-size:var(--step--1);letter-spacing:0;margin-block-end:var(--space-2);font-weight:700}ul[data-astro-cid-jo6i4kqk]{margin:0;padding:0;list-style:none;display:grid}a[data-astro-cid-jo6i4kqk]{min-height:44px;color:var(--ink-muted);align-items:center;line-height:1.3;text-decoration:none;display:inline-flex}@media (width<=24rem){a[data-astro-cid-jo6i4kqk]:lang(de){overflow-wrap:anywhere;hyphens:auto}}a[data-astro-cid-jo6i4kqk]:hover{color:var(--rest);text-decoration:underline}.site-footer__notes[data-astro-cid-jo6i4kqk]{gap:var(--space-2);max-width:var(--measure);display:grid}.site-footer__notes[data-astro-cid-jo6i4kqk] strong[data-astro-cid-jo6i4kqk]{color:var(--ink)}.site-footer__bottom[data-astro-cid-jo6i4kqk]{justify-items:start;gap:var(--space-3);border-block-start:1px solid var(--rule);padding-block-start:var(--space-4);display:grid}@media (width>=40rem){.site-footer__bottom[data-astro-cid-jo6i4kqk]{justify-content:space-between;align-items:center;gap:var(--space-4);display:flex}}.breadcrumbs[data-astro-cid-vx4iavld]{color:var(--ink-muted);font-size:var(--step--1)}ol[data-astro-cid-vx4iavld]{align-items:center;gap:var(--space-1) var(--space-3);flex-wrap:wrap;margin:0;padding:0;list-style:none;display:flex}li[data-astro-cid-vx4iavld]{align-items:center;gap:var(--space-3);overflow-wrap:anywhere;min-height:24px;display:inline-flex}li[data-astro-cid-vx4iavld]:not(:last-child):after{content:"";opacity:.7;border-block-start:1.5px solid;border-inline-end:1.5px solid;flex:none;width:.4em;height:.4em;transform:rotate(45deg)}a[data-astro-cid-vx4iavld]{color:var(--ink-muted);font-weight:600;text-decoration:none}a[data-astro-cid-vx4iavld]:hover{color:var(--rest);text-decoration:underline}[data-astro-cid-vx4iavld][aria-current=page]{color:var(--ink)}.consent[data-astro-cid-u6s5b3h2]{inset-inline:var(--space-3);z-index:40;gap:var(--space-3);max-width:30rem;padding:var(--space-4);border:1px solid var(--rule);border-radius:var(--radius);background:var(--surface);box-shadow:var(--shadow-pop);color:var(--ink);font-family:var(--font-reading);font-size:var(--step--1);line-height:1.5;display:grid;position:fixed;inset-block-end:max(var(--space-3), env(safe-area-inset-bottom))}.consent[data-astro-cid-u6s5b3h2][hidden]{display:none}html:has([data-consent-banner]:not([hidden])){scroll-padding-block-end:12rem}@media (width>=40rem){.consent[data-astro-cid-u6s5b3h2]{inset-inline:var(--space-5) auto;inset-block-end:max(var(--space-5), env(safe-area-inset-bottom))}}.consent__text[data-astro-cid-u6s5b3h2]{margin:0}.consent__text[data-astro-cid-u6s5b3h2] strong[data-astro-cid-u6s5b3h2]{font-family:var(--font-text)}.consent__actions[data-astro-cid-u6s5b3h2]{gap:var(--space-2);grid-template-columns:1fr 1fr;display:grid}.consent__actions[data-astro-cid-u6s5b3h2] .button[data-astro-cid-u6s5b3h2]{font-family:var(--font-text)}.breadcrumbs-wrap[data-astro-cid-z4jru4n3]{padding-block-start:var(--space-5)}