html {
    box-sizing: border-box;
}

*,
*:before,
*:after {
    box-sizing: inherit;
}

body {
    margin: 0;
    background: #fff;
    color: #111;
    font: 17px/1.8 "Rubik", "Segoe UI", Arial, Helvetica, sans-serif;
}

a {
    color: #000;
}

a:hover,
a:focus {
    text-decoration-thickness: 2px;
}

code,
pre {
    font-family: "Courier New", Courier, monospace;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    border-bottom: 1px solid #d6dce3;
    background: #fff;
}

.site-header__inner {
    max-width: 1380px;
    margin: 0 auto;
    padding: 20px 28px 16px;
}

.site-brand {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    margin-bottom: 18px;
}

.site-brand__main {
    display: flex;
    align-items: center;
    gap: 8px;
}

.site-brand__logo-link {
    display: inline-flex;
    flex: 0 0 auto;
}

.site-brand__logo {
    display: block;
    width: 42px;
    height: auto;
}

.site-title {
    display: inline-block;
    font-size: 2.1rem;
    font-weight: 700;
    letter-spacing: -0.04em;
    text-decoration: none;
}

.site-tagline {
    margin: 8px 0 0;
    max-width: 760px;
    color: #56606b;
}

.top-nav {
    display: flex;
    flex-wrap: nowrap;
    gap: 10px 12px;
    align-items: center;
    padding-top: 14px;
    border-top: 1px solid #edf1f4;
}

.top-nav-toggle,
.nav-group__toggle {
    display: none;
    border: 0;
    background: transparent;
    color: #4b5561;
    font: inherit;
    cursor: pointer;
}

.top-nav-toggle {
    margin: 0;
    padding: 10px 0 2px;
    font-size: 0.95rem;
    font-weight: 700;
    letter-spacing: 0.02em;
}

.top-nav > a,
.nav-group__link,
.nav-group__menu a {
    padding: 8px 0;
    text-decoration: none;
    font-size: 0.92rem;
    font-weight: 500;
    letter-spacing: 0.01em;
    color: #4b5561;
    white-space: nowrap;
}

.top-nav > a:hover,
.top-nav > a:focus,
.nav-group__link:hover,
.nav-group__link:focus,
.nav-group__menu a:hover,
.nav-group__menu a:focus {
    color: #111;
}

.top-nav > a.active {
    color: #111;
    font-weight: 700;
}

.nav-group {
    position: relative;
}

.nav-group__header {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-group__link {
    display: inline-block;
}

.nav-group__link--label {
    cursor: default;
}

.nav-group__toggle {
    position: relative;
    width: 24px;
    height: 24px;
    padding: 0;
    flex: 0 0 auto;
}

.nav-group__toggle:before,
.nav-group__toggle:after {
    content: '';
    position: absolute;
    left: 50%;
    top: 50%;
    width: 10px;
    height: 2px;
    background: currentColor;
    transform: translate(-50%, -50%);
}

.nav-group__toggle:after {
    transform: translate(-50%, -50%) rotate(90deg);
}

.nav-group__toggle[aria-expanded="true"]:after {
    display: none;
}

.nav-group__toggle-label {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

.nav-group.active .nav-group__link {
    color: #111;
    font-weight: 700;
}

.nav-group__menu {
    position: absolute;
    left: 0;
    top: 100%;
    min-width: 425px;
    max-width: min(88vw, 760px);
    display: none;
    padding: 14px 18px;
    border: 1px solid #d6dce3;
    background: #fff;
    box-shadow: 0 20px 40px rgba(17, 17, 17, 0.08);
}

.nav-group--section .nav-group__menu {
    min-width: 340px;
    max-width: 380px;
    padding: 10px 14px;
}

.nav-group__menu a {
    display: block;
    padding: 8px 0;
    white-space: normal;
    line-height: 1.45;
}

.nav-group__menu a.active {
    color: #111;
    font-weight: 700;
}

.nav-group:hover .nav-group__menu,
.nav-group:focus-within .nav-group__menu {
    display: block;
}

.nav-subgroup {
    position: relative;
}

.nav-subgroup + .nav-subgroup {
    border-top: 1px solid #edf1f4;
}

.nav-subgroup__link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 12px 18px;
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 700;
    letter-spacing: 0.01em;
    color: #111;
}

.nav-subgroup__arrow {
    flex: 0 0 auto;
    color: #7b8794;
    font-size: 1rem;
    line-height: 1;
}

.nav-subgroup__menu {
    position: absolute;
    left: calc(100% - 1px);
    top: -11px;
    min-width: 480px;
    max-width: min(55vw, 630px);
    display: none;
    padding: 14px 18px;
    border: 1px solid #d6dce3;
    background: #fff;
    box-shadow: 0 20px 40px rgba(17, 17, 17, 0.08);
}

/* Prawe dzialy otwieraja trzeci poziom do srodka ekranu. */
.top-nav .nav-group:nth-last-child(-n + 4) .nav-subgroup__menu {
    left: auto;
    right: calc(100% - 1px);
}

.nav-subgroup:hover .nav-subgroup__menu,
.nav-subgroup:focus-within .nav-subgroup__menu {
    display: block;
}

.nav-subgroup:hover .nav-subgroup__link,
.nav-subgroup:focus-within .nav-subgroup__link,
.nav-subgroup__link.active {
    background: #f7f9fb;
}

.nav-subgroup__menu a {
    padding: 8px 0;
}

.layout {
    max-width: 980px;
    margin: 0 auto;
    padding: 42px 28px 72px;
}

.article h1,
.footnotes h2 {
    margin-top: 0;
}

.article-meta {
    display: block;
    color: #69727d;
    font-size: 0.92rem;
}

.article-summary {
    max-width: 760px;
    margin: 0;
    color: #37414a;
    font-size: 1.08rem;
    line-height: 1.7;
}

.article {
    width: 100%;
}

.article-header {
    margin-bottom: 34px;
}

.article-header h1 {
    margin-bottom: 10px;
    font-size: clamp(2.3rem, 5vw, 4.25rem);
    line-height: 1.02;
    letter-spacing: -0.05em;
    font-weight: 700;
}

.article-header--group h1 {
    margin-bottom: 14px;
}

.article-body {
    font-size: 1.04rem;
    color: #1e252c;
}

.article-body--homepage h1:first-child,
.article-body--homepage h2:first-child {
    margin-top: 0;
}

.article-body h1,
.article-body h2,
.article-body h3,
.article-body h4 {
    margin: 52px 0 18px;
    line-height: 1.1;
    letter-spacing: -0.04em;
    font-weight: 700;
}

.article-body h2 {
    font-size: 2rem;
}

.article-body h3 {
    font-size: 1.45rem;
}

.article-body p,
.article-body ul,
.article-body ol,
.article-body pre,
.article-body blockquote,
.article-body table {
    margin: 0 0 22px;
}

.article-body img {
    max-width: 100%;
    height: auto;
}

.article-body figure {
    margin: 32px 0 26px;
}

.article-body figure.article-figure--float-right {
    display: block;
    float: right;
    width: 40%;
    max-width: 400px;
    margin: 0 0 22px 24px;
}

.article-body figure.article-figure--float-right.article-figure--float-right-max-300 {
    max-width: 300px;
}

.article-body figure.article-figure--float-right img {
    display: block;
    width: 100%;
}

.article-body figure.article-figure--full {
    display: block;
    width: 100%;
    margin: 28px 0 26px;
}

.article-body figure.article-figure--full img {
    display: block;
    width: 100%;
}

.article-body figcaption {
    margin-top: 10px;
    color: #5b6570;
    font-size: 0.95rem;
    line-height: 1.6;
}

.article-embed {
    margin: 32px 0 26px;
}

.article-embed--video {
    position: relative;
    padding-bottom: 56.25%;
    height: 0;
    overflow: hidden;
    background: #111;
}

.article-embed--video iframe {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    border: 0;
}

.article-body table {
    border-collapse: collapse;
    width: 100%;
}

.article-body th,
.article-body td {
    border: 1px solid #000;
    padding: 8px;
    text-align: left;
}

.article-body blockquote {
    margin: 0;
    margin-bottom: 22px;
    padding: 2px 0 2px 18px;
    border-left: 4px solid #111;
    color: #37414a;
}

.article-body hr {
    border: 0;
    border-top: 1px solid #d6dce3;
    margin: 36px 0;
}

.article-body a {
    text-underline-offset: 0.16em;
}

.article-body sup a {
    color: #ffaa17;
    text-decoration: none;
}

.article-body sup {
    margin-left: 0.08em;
    font-size: 0.72em;
    line-height: 0;
    vertical-align: super;
}

.article-body sup.footnote-separator {
    margin-left: 0.04em;
    margin-right: 0.04em;
    color: #111;
}

.article-deferred {
    margin: 0 0 22px;
    padding: 16px 18px;
    border: 1px solid #e6d58a;
    border-left: 5px solid #d0aa1b;
    background: #fff7bf;
    border-radius: 6px;
}

.article-deferred > *:last-child {
    margin-bottom: 0;
}

.lab-calculator {
    margin: 34px 0 46px;
    border: 1px solid #ccd5dd;
    border-radius: 14px;
    overflow: hidden;
    background: #f8fafb;
    box-shadow: 0 18px 44px rgba(17, 17, 17, 0.06);
}

.lab-calculator__header {
    padding: 26px 28px 20px;
    background: #111;
    color: #fff;
}

.article-body .lab-calculator__header h2 {
    margin: 4px 0 10px;
    color: #fff;
    font-size: 1.75rem;
}

.lab-calculator__header p {
    max-width: 760px;
    margin: 0;
    color: #dce2e8;
}

.lab-calculator__eyebrow {
    text-transform: uppercase;
    letter-spacing: 0.12em;
    font-size: 0.76rem;
    font-weight: 700;
    color: #ffbf3f !important;
}

.lab-calculator__tabs {
    display: flex;
    gap: 0;
    overflow-x: auto;
    border-bottom: 1px solid #ccd5dd;
    background: #eef2f5;
}

.lab-calculator__tab {
    flex: 1 1 0;
    min-width: 150px;
    padding: 14px 18px;
    border: 0;
    border-right: 1px solid #ccd5dd;
    background: transparent;
    color: #44505b;
    font: inherit;
    font-size: 0.92rem;
    font-weight: 700;
    cursor: pointer;
}

.lab-calculator__tab:last-child {
    border-right: 0;
}

.lab-calculator__tab.is-active {
    background: #fff;
    color: #111;
    box-shadow: inset 0 -3px 0 #ffaa17;
}

.lab-calculator__tab:focus-visible,
.lab-calculator button:focus-visible,
.lab-calculator input:focus-visible,
.lab-calculator select:focus-visible {
    outline: 3px solid #ffaa17;
    outline-offset: 2px;
}

.lab-calculator__panel {
    padding: 26px 28px 30px;
    background: #fff;
}

.lab-calculator__grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
}

.lab-calculator label {
    display: flex;
    flex-direction: column;
    gap: 7px;
    font-weight: 700;
    color: #1e252c;
}

.lab-calculator label small {
    min-height: 2.8em;
    color: #68727c;
    font-size: 0.8rem;
    font-weight: 400;
    line-height: 1.45;
}

.lab-calculator input,
.lab-calculator select,
.lab-calculator textarea {
    width: 100%;
    min-height: 48px;
    padding: 10px 12px;
    border: 1px solid #9aa7b2;
    border-radius: 7px;
    background: #fff;
    color: #111;
    font: inherit;
}

.lab-calculator textarea {
    min-height: 190px;
    resize: vertical;
    font-family: "Courier New", Courier, monospace;
    font-size: 0.92rem;
    line-height: 1.55;
}

.lab-calculator__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 6px;
}

.lab-calculator__actions button {
    min-height: 46px;
    padding: 10px 18px;
    border: 1px solid #111;
    border-radius: 7px;
    background: #111;
    color: #fff;
    font: inherit;
    font-weight: 700;
    cursor: pointer;
}

.lab-calculator__actions .lab-calculator__button-secondary {
    background: #fff;
    color: #111;
}

.lab-calculator__message,
.lab-calculator__warning {
    margin: 22px 0 0;
    padding: 14px 16px;
    border-left: 5px solid #b33a2f;
    border-radius: 5px;
    background: #fff0ed;
    color: #51201b;
}

.lab-calculator__results {
    margin-top: 24px;
    padding-top: 24px;
    border-top: 1px solid #d7dfe6;
}

.lab-calculator__metrics {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
    margin: 0;
}

.lab-calculator__metrics > div {
    min-width: 0;
    padding: 15px 16px;
    border: 1px solid #d7dfe6;
    border-radius: 8px;
    background: #f8fafb;
}

.lab-calculator__metrics dt {
    color: #5f6973;
    font-size: 0.8rem;
    font-weight: 700;
    line-height: 1.35;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.lab-calculator__metrics dd {
    margin: 6px 0 0;
    overflow-wrap: anywhere;
    color: #111;
    font-size: 1.28rem;
    font-weight: 700;
    line-height: 1.3;
}

.lab-calculator__metrics small {
    display: block;
    margin-top: 5px;
    color: #68727c;
    font-size: 0.78rem;
    line-height: 1.4;
}

.lab-calculator__table-wrap {
    margin-top: 22px;
    overflow-x: auto;
}

.article-body .lab-calculator__table-wrap table {
    margin-bottom: 0;
    font-size: 0.9rem;
}

.cycle-map {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 12px;
    margin: 0 0 24px;
}

.cycle-map__pool {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 84px;
    padding: 14px;
    border: 2px solid #111;
    border-radius: 999px;
    background: #fff;
    text-align: center;
    font-weight: 700;
    line-height: 1.3;
}

.cycle-map__process {
    position: relative;
    padding: 13px 14px;
    border-left: 5px solid #ffaa17;
    border-radius: 6px;
    background: #fff8e5;
    line-height: 1.4;
}

.cycle-map__process small {
    display: block;
    margin-top: 4px;
    color: #5f6973;
}

.group-article-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.planned-articles {
    margin-top: 24px;
    padding: 18px 20px;
    border: 1px solid #e3e8ed;
    border-radius: 8px;
    background: #f8fafb;
}

.planned-articles h3 {
    margin: 0 0 10px;
    font-size: 1rem;
    color: #56606b;
}

.planned-article-list {
    margin: 0;
    padding-left: 22px;
    color: #56606b;
}

.planned-article-list li + li {
    margin-top: 4px;
}

.group-article-section {
    margin-bottom: 42px;
}

.group-article-section:last-child {
    margin-bottom: 0;
}

.group-article-section__description {
    max-width: 760px;
    margin: -6px 0 22px;
    color: #4b5561;
}

.group-article-list li {
    padding: 0 0 22px;
    margin-bottom: 22px;
    border-bottom: 1px solid #d6dce3;
}

.group-article-list li:last-child {
    margin-bottom: 0;
}

.group-article-list a {
    display: inline-block;
    margin-bottom: 6px;
    font-size: 1.05rem;
    font-weight: 700;
}

.group-article-list p {
    margin: 0;
    color: #4b5561;
}

.footnotes {
    margin-top: 48px;
    padding-top: 24px;
    border-top: 1px solid #d6dce3;
}

.footnotes ol {
    padding-left: 22px;
}

.footnotes li {
    margin-bottom: 14px;
}

.footnote-backref {
    color: #ffaa17;
    text-decoration: none;
}

.site-footer {
    border-top: 1px solid #d6dce3;
    background: #fff;
}

.site-footer__inner {
    max-width: 1380px;
    margin: 0 auto;
    padding: 32px 28px 38px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px 120px;
    flex-wrap: wrap;
}

.site-footer__logo-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.site-footer__logo {
    display: block;
    max-width: 100%;
    height: 28px;
    width: auto;
}

.site-footer__logo--genetyka {
    height: 48px;
}

.site-footer__logo--polskiatom {
    height: 40px;
}

@media (max-width: 900px) {
    .site-header__inner {
        padding: 18px 18px 14px;
    }

    .layout {
        padding: 28px 18px 56px;
    }

    .top-nav-toggle {
        display: inline-flex;
        align-items: center;
    }

    .top-nav {
        display: none;
        padding-top: 16px;
        margin-top: 14px;
    }

    .top-nav.is-open {
        display: block;
    }

    .top-nav > a,
    .nav-group__link {
        display: block;
    }

    .nav-group {
        padding-bottom: 4px;
    }

    .nav-group__header {
        justify-content: space-between;
        gap: 12px;
    }

    .nav-group__toggle {
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }

    .nav-group__menu {
        position: static;
        display: none;
        min-width: 0;
        max-width: none;
        padding: 2px 0 10px 14px;
        border: 0;
        box-shadow: none;
    }

    .nav-group--section .nav-group__menu {
        min-width: 0;
        max-width: none;
        padding: 2px 0 10px 14px;
    }

    .nav-group__header + .nav-group__menu {
        margin-top: 2px;
    }

    .nav-group:hover .nav-group__menu,
    .nav-group:focus-within .nav-group__menu {
        display: none;
    }

    .nav-group.is-open .nav-group__menu {
        display: block;
    }

    .nav-subgroup + .nav-subgroup {
        border-top: 0;
    }

    .nav-subgroup__link {
        padding: 10px 0;
        background: transparent;
    }

    .nav-subgroup__arrow {
        display: none;
    }

    .nav-subgroup__menu {
        position: static;
        left: auto;
        right: auto;
        top: auto;
        min-width: 0;
        max-width: none;
        display: block;
        padding: 0 0 8px 12px;
        border: 0;
        box-shadow: none;
    }

    .site-brand__main {
        align-items: center;
        gap: 12px;
    }

    .site-brand__logo {
        width: 42px;
        height: auto;
    }

    .site-footer__inner {
        padding: 24px 20px;
        justify-content: center;
        gap: 28px 40px;
    }

    .article-body figure.article-figure--float-right {
        float: none;
        width: auto;
        margin: 32px 0 26px;
    }

    .site-footer__logo {
        height: 28px;
    }

    .site-footer__logo--genetyka {
        height: 48px;
    }

    .lab-calculator__header,
    .lab-calculator__panel {
        padding-left: 18px;
        padding-right: 18px;
    }

    .lab-calculator__grid,
    .lab-calculator__metrics {
        grid-template-columns: 1fr;
    }

    .lab-calculator__tab {
        flex: 0 0 auto;
    }
}