:root {
    --ink: #161b1d;
    --ink-2: #232a2d;
    --paper: #f2f1ec;
    --paper-2: #e7e5de;
    --white: #ffffff;
    --muted: #667074;
    --line: #d2d4cf;
    --signal: #dcff55;
    --green: #157a55;
    --blue: #2e64d6;
    --red: #dd4b43;
    --container: 1200px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    color: var(--ink);
    font-family: Manrope, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    line-height: 1.65;
    letter-spacing: 0;
    background: var(--paper);
}

body,
button,
input {
    font-size: 16px;
}

a {
    color: inherit;
    text-decoration: none;
}

img {
    display: block;
    max-width: 100%;
}

button,
input {
    font: inherit;
}

button,
summary,
a {
    -webkit-tap-highlight-color: transparent;
}

.site-container {
    width: min(var(--container), calc(100% - 48px));
    margin: 0 auto;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.site-header {
    position: relative;
    z-index: 40;
    color: var(--white);
    background: var(--ink);
}

.site-header__main {
    display: flex;
    min-height: 78px;
    align-items: center;
    justify-content: space-between;
    gap: 30px;
}

.site-brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    flex: 0 0 auto;
}

.site-brand__mark {
    display: grid;
    width: 38px;
    height: 38px;
    place-items: center;
    color: var(--ink);
    font-weight: 800;
    background: var(--signal);
}

.site-brand__name {
    font-size: 21px;
    font-weight: 800;
}

.site-brand__tagline {
    margin-left: 4px;
    padding-left: 14px;
    border-left: 1px solid #4b5255;
    color: #aeb5b7;
    font-size: 13px;
    font-weight: 600;
}

.site-search {
    display: flex;
    width: min(390px, 42vw);
    min-height: 42px;
    border: 1px solid #555d60;
    background: #22292c;
}

.site-search:focus-within {
    border-color: var(--signal);
}

.site-search input {
    min-width: 0;
    flex: 1;
    padding: 9px 14px;
    border: 0;
    outline: 0;
    color: var(--white);
    background: transparent;
}

.site-search input::placeholder {
    color: #9aa2a5;
}

.site-search button {
    min-width: 70px;
    border: 0;
    color: var(--ink);
    font-size: 14px;
    font-weight: 800;
    cursor: pointer;
    background: var(--signal);
}

.site-nav-wrap {
    border-top: 1px solid #32393c;
    background: #1b2123;
}

.site-nav-wrap > .site-container {
    display: flex;
    min-height: 48px;
    align-items: stretch;
    justify-content: space-between;
    gap: 20px;
}

.site-nav {
    display: flex;
    align-items: stretch;
}

.site-nav__home,
.site-nav__link,
.site-nav__method {
    display: flex;
    min-height: 48px;
    align-items: center;
    padding: 0 16px;
    color: #d8dcdd;
    font-size: 14px;
    font-weight: 700;
}

.site-nav__home {
    padding-left: 0;
}

.site-nav__method {
    padding-right: 0;
    color: var(--signal);
}

.site-nav__group {
    position: relative;
}

.site-nav__group:hover .site-nav__link,
.site-nav__group:focus-within .site-nav__link,
.site-nav__home:hover {
    color: var(--signal);
}

.site-nav__group.is-active > .site-nav__link,
.site-nav__group.is-current > .site-nav__link,
.site-nav__group.is-ancestor > .site-nav__link {
    color: var(--signal);
    box-shadow: inset 0 -3px 0 var(--signal);
}

.site-nav__dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    display: none;
    width: 420px;
    padding: 22px;
    border-top: 3px solid var(--signal);
    color: var(--ink);
    box-shadow: 0 18px 40px rgba(0, 0, 0, .22);
    background: var(--white);
}

.site-nav__group:hover .site-nav__dropdown,
.site-nav__group:focus-within .site-nav__dropdown {
    display: block;
}

.site-nav__dropdown p {
    margin: 0 0 14px;
    color: var(--muted);
    font-size: 13px;
}

.site-nav__dropdown > div {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    border-top: 1px solid var(--line);
}

.site-nav__dropdown a {
    padding: 10px 8px 10px 0;
    border-bottom: 1px solid var(--line);
    font-size: 14px;
    font-weight: 700;
}

.site-nav__dropdown a:hover {
    color: var(--green);
}

.site-nav__dropdown a.is-active,
.site-nav__dropdown a.is-current {
    padding-left: 10px;
    color: var(--green);
    font-weight: 800;
    box-shadow: inset 3px 0 0 var(--green);
    background: #f1f4ee;
}

.site-mobile-menu {
    display: none;
}

.section-heading {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 50px;
    margin-bottom: 34px;
}

.section-heading h2 {
    margin: 4px 0 0;
    font-size: 36px;
    line-height: 1.22;
}

.section-heading > p {
    width: min(480px, 46%);
    margin: 0;
    color: var(--muted);
}

.section-kicker {
    margin: 0;
    color: var(--green);
    font-size: 13px;
    font-weight: 800;
    text-transform: uppercase;
}

.section-heading__link {
    padding-bottom: 4px;
    border-bottom: 2px solid var(--ink);
    font-size: 14px;
    font-weight: 800;
}

.breadcrumb {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 26px;
    color: var(--muted);
    font-size: 13px;
}

.breadcrumb a:hover {
    color: var(--green);
}

.site-footer {
    color: #d8dddd;
    background: #111618;
}

.site-footer__top {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr;
    gap: 70px;
    padding-top: 62px;
    padding-bottom: 58px;
}

.site-brand--footer {
    color: var(--white);
}

.site-footer__brand > p {
    max-width: 360px;
    margin: 18px 0 0;
    color: #9fa8aa;
}

.site-footer h2 {
    margin: 4px 0 17px;
    color: var(--white);
    font-size: 14px;
}

.site-footer__links {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 9px 18px;
    color: #aeb6b8;
    font-size: 13px;
}

.site-footer__links a:hover {
    color: var(--signal);
}

.site-footer__bottom {
    border-top: 1px solid #2b3235;
    color: #818b8e;
    font-size: 12px;
}

.site-footer__bottom > .site-container {
    display: flex;
    min-height: 56px;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.site-footer__bottom p {
    margin: 0;
}

@media (max-width: 980px) {
    .site-nav-wrap {
        display: none;
    }

    .site-brand__tagline,
    .site-search {
        display: none;
    }

    .site-mobile-menu {
        display: block;
    }

    .site-mobile-menu summary {
        display: grid;
        width: 42px;
        height: 42px;
        place-content: center;
        gap: 5px;
        border: 1px solid #4c5558;
        cursor: pointer;
        list-style: none;
    }

    .site-mobile-menu summary::-webkit-details-marker {
        display: none;
    }

    .site-mobile-menu summary span {
        display: block;
        width: 18px;
        height: 2px;
        background: var(--white);
    }

    .site-mobile-menu > nav {
        position: absolute;
        top: 78px;
        left: 0;
        width: 100%;
        max-height: calc(100vh - 78px);
        padding: 20px 24px 28px;
        overflow-y: auto;
        border-top: 1px solid #363e41;
        background: var(--ink);
    }

    .site-mobile-menu__group {
        padding: 13px 0;
        border-bottom: 1px solid #363e41;
    }

    .site-mobile-menu__parent {
        color: var(--white);
        font-weight: 800;
    }

    .site-mobile-menu__group.is-active > .site-mobile-menu__parent,
    .site-mobile-menu__group.is-current > .site-mobile-menu__parent,
    .site-mobile-menu__group.is-ancestor > .site-mobile-menu__parent {
        color: var(--signal);
    }

    .site-mobile-menu__children {
        display: flex;
        flex-wrap: wrap;
        gap: 8px 18px;
        margin-top: 8px;
        color: #aab2b4;
        font-size: 13px;
    }

    .site-mobile-menu__children a.is-active,
    .site-mobile-menu__children a.is-current {
        color: var(--signal);
        font-weight: 800;
        box-shadow: inset 0 -1px 0 var(--signal);
    }

    .site-footer__top {
        grid-template-columns: 1fr 1fr;
    }

    .site-footer__brand {
        grid-column: 1 / -1;
    }
}

@media (max-width: 680px) {
    .site-container {
        width: min(var(--container), calc(100% - 28px));
    }

    .site-header__main {
        min-height: 68px;
    }

    .site-mobile-menu > nav {
        top: 68px;
        max-height: calc(100vh - 68px);
    }

    .section-heading {
        display: block;
        margin-bottom: 26px;
    }

    .section-heading h2 {
        font-size: 29px;
    }

    .section-heading > p {
        width: auto;
        margin-top: 12px;
    }

    .section-heading__link {
        display: inline-block;
        margin-top: 14px;
    }

    .site-footer__top {
        grid-template-columns: 1fr;
        gap: 34px;
        padding-top: 46px;
        padding-bottom: 42px;
    }

    .site-footer__brand {
        grid-column: auto;
    }

    .site-footer__bottom > .site-container {
        display: block;
        padding-top: 15px;
        padding-bottom: 15px;
    }

    .site-footer__bottom p + p {
        margin-top: 4px;
    }
}