:root {
    --ink: #171a1b;
    --ink-soft: #333a3c;
    --paper: #f7f3ea;
    --paper-deep: #eee7da;
    --white: #ffffff;
    --line: #d9d2c5;
    --line-dark: #43494a;
    --muted: #6c7474;
    --red: #b64034;
    --red-dark: #8f2d25;
    --green: #2d6959;
    --gold: #b9914b;
    --focus: #1b66b1;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    color: var(--ink);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    font-size: 16px;
    line-height: 1.72;
    letter-spacing: 0;
    background: var(--paper);
    overflow-x: hidden;
}

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

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

button,
input {
    font: inherit;
    letter-spacing: 0;
}

button,
summary {
    cursor: pointer;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
summary:focus-visible {
    outline: 3px solid var(--focus);
    outline-offset: 3px;
}

.site-container {
    width: min(1180px, calc(100% - 40px));
    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;
}

.skip-link {
    position: fixed;
    top: 12px;
    left: 12px;
    z-index: 1000;
    padding: 10px 14px;
    color: var(--white);
    background: var(--ink);
    transform: translateY(-160%);
}

.skip-link:focus {
    transform: translateY(0);
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 80;
    color: var(--ink);
    background: rgba(247, 243, 234, .97);
    border-bottom: 1px solid var(--line);
    backdrop-filter: blur(16px);
}

.site-header__main {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) 236px;
    min-height: 76px;
    align-items: center;
    gap: 28px;
}

.site-brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    min-width: 166px;
}

.site-brand__mark {
    position: relative;
    display: grid;
    width: 42px;
    height: 42px;
    grid-template-columns: repeat(3, 6px);
    place-content: center;
    gap: 3px;
    color: var(--paper);
    background: var(--red);
    border-radius: 50%;
    box-shadow: inset 0 0 0 2px rgba(255, 255, 255, .28);
}

.site-brand__mark::after {
    content: "";
    position: absolute;
    inset: 10px;
    border: 2px solid currentColor;
    border-radius: 50%;
}

.site-brand__mark i {
    position: relative;
    z-index: 1;
    width: 6px;
    height: 6px;
    background: currentColor;
    border-radius: 50%;
}

.site-brand__text {
    display: flex;
    flex-direction: column;
    line-height: 1.15;
}

.site-brand__text strong {
    font-family: "Songti SC", "STSong", serif;
    font-size: 23px;
    font-weight: 800;
}

.site-brand__text small {
    margin-top: 4px;
    color: var(--muted);
    font-size: 10px;
    font-weight: 700;
}

.site-nav {
    display: flex;
    min-width: 0;
    align-items: stretch;
    justify-content: center;
    gap: 2px;
    align-self: stretch;
}

.site-nav__home,
.site-nav__link {
    position: relative;
    display: flex;
    height: 100%;
    align-items: center;
    padding: 0 12px;
    font-size: 14px;
    font-weight: 650;
    white-space: nowrap;
}

.site-nav__home::after,
.site-nav__link::after {
    content: "";
    position: absolute;
    right: 12px;
    bottom: 0;
    left: 12px;
    height: 3px;
    background: transparent;
}

.site-nav__home:hover,
.site-nav__link:hover,
.site-nav__home.is-current,
.site-nav__link[aria-current="page"] {
    color: var(--red-dark);
}

.site-nav__home.is-current::after,
.site-nav__link[aria-current="page"]::after {
    background: var(--red);
}

.site-nav__group {
    position: relative;
    display: flex;
    align-items: stretch;
}

.site-nav__dropdown {
    position: absolute;
    top: calc(100% - 1px);
    left: 50%;
    display: none;
    width: 330px;
    padding: 20px;
    color: var(--ink);
    background: var(--white);
    border: 1px solid var(--line);
    border-top: 3px solid var(--red);
    box-shadow: 0 22px 44px rgba(24, 28, 29, .14);
    transform: translateX(-50%);
}

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

.site-nav__dropdown p {
    margin: 0 0 12px;
    color: var(--muted);
    font-size: 12px;
    font-weight: 700;
}

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

.site-nav__child {
    padding: 11px 12px;
    font-size: 14px;
    background: var(--white);
}

.site-nav__child:hover,
.site-nav__child[aria-current="page"] {
    color: var(--red-dark);
    background: #f9f5ef;
}

.site-search {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    height: 40px;
    border: 1px solid var(--line);
    background: var(--white);
}

.site-search input {
    min-width: 0;
    padding: 0 12px;
    color: var(--ink);
    border: 0;
    background: transparent;
    outline: 0;
}

.site-search input::placeholder {
    color: #8a908f;
}

.site-search button {
    padding: 0 14px;
    color: var(--white);
    font-size: 13px;
    font-weight: 700;
    border: 0;
    background: var(--ink);
}

.site-search button:hover {
    background: var(--red-dark);
}

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

.breadcrumb {
    display: flex;
    flex-wrap: wrap;
    gap: 6px 10px;
    margin: 0 0 26px;
    padding: 0;
    color: var(--muted);
    font-size: 13px;
}

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

.breadcrumb--inverse {
    color: rgba(255, 255, 255, .68);
}

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

.section-heading {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 48px;
    margin-bottom: 34px;
}

.section-heading h2 {
    margin: 3px 0 0;
    font-family: "Songti SC", "STSong", serif;
    font-size: 34px;
    line-height: 1.25;
    letter-spacing: 0;
}

.section-heading > p {
    width: min(100%, 520px);
    margin: 0;
    color: var(--muted);
}

.section-kicker {
    margin: 0;
    color: var(--red-dark);
    font-size: 12px;
    font-weight: 800;
}

.site-footer {
    color: #e8e4dc;
    background: var(--ink);
    border-top: 5px solid var(--red);
}

.site-footer__grid {
    display: grid;
    grid-template-columns: 1.45fr .8fr 1fr .7fr;
    gap: 46px;
    padding-top: 62px;
    padding-bottom: 54px;
}

.site-footer h2 {
    margin: 0 0 18px;
    font-size: 15px;
}

.site-footer__brand h2 {
    margin: 4px 0 14px;
    font-family: "Songti SC", "STSong", serif;
    font-size: 32px;
}

.site-footer__brand > p:last-child {
    max-width: 340px;
    margin: 0;
    color: #aeb4b2;
}

.site-footer__label {
    margin: 0;
    color: #d19a90;
    font-size: 11px;
    font-weight: 800;
}

.site-footer__links,
.site-footer__principles {
    display: grid;
    gap: 9px;
}

.site-footer__links a,
.site-footer__principles p {
    margin: 0;
    color: #aeb4b2;
    font-size: 14px;
}

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

.site-footer__bottom {
    border-top: 1px solid #323839;
}

.site-footer__bottom-inner {
    display: flex;
    min-height: 70px;
    align-items: center;
    justify-content: space-between;
    gap: 28px;
}

.site-footer__bottom p {
    margin: 0;
    color: #8d9593;
    font-size: 12px;
}

@media (max-width: 1080px) {
    .site-header__main {
        grid-template-columns: auto minmax(0, 1fr) 44px;
        gap: 20px;
    }

    .site-nav {
        display: none;
    }

    .site-search {
        width: min(100%, 360px);
        justify-self: end;
    }

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

    .site-mobile-nav summary {
        display: grid;
        width: 44px;
        height: 44px;
        place-items: center;
        color: var(--ink);
        font-size: 10px;
        font-weight: 700;
        list-style: none;
        border: 1px solid var(--line);
        background: var(--white);
    }

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

    .site-mobile-nav__icon {
        display: grid;
        gap: 3px;
    }

    .site-mobile-nav__icon i {
        display: block;
        width: 18px;
        height: 2px;
        background: currentColor;
    }

    .site-mobile-nav__backdrop {
        position: fixed;
        inset: 0;
        z-index: 90;
        background: rgba(15, 17, 18, .52);
    }

    .site-mobile-nav__panel {
        position: fixed;
        top: 0;
        right: 0;
        bottom: 0;
        z-index: 91;
        width: min(420px, 92vw);
        padding: 24px;
        overflow-y: auto;
        background: var(--paper);
        box-shadow: -24px 0 70px rgba(20, 24, 25, .22);
    }

    .site-mobile-nav__header {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding-bottom: 18px;
        border-bottom: 1px solid var(--line);
    }

    .site-mobile-nav__header strong {
        font-family: "Songti SC", "STSong", serif;
        font-size: 25px;
    }

    .site-mobile-nav__header button {
        display: grid;
        width: 38px;
        height: 38px;
        place-items: center;
        padding: 0;
        color: var(--ink);
        font-size: 27px;
        line-height: 1;
        border: 1px solid var(--line);
        background: var(--white);
    }

    .site-mobile-nav__search {
        display: grid;
        grid-template-columns: minmax(0, 1fr) auto;
        height: 46px;
        margin: 22px 0;
        border: 1px solid var(--line);
        background: var(--white);
    }

    .site-mobile-nav__search input {
        min-width: 0;
        padding: 0 12px;
        border: 0;
        outline: 0;
    }

    .site-mobile-nav__search button {
        padding: 0 15px;
        color: var(--white);
        border: 0;
        background: var(--red-dark);
    }

    .site-mobile-nav nav > a,
    .site-mobile-nav__group > a {
        display: flex;
        min-height: 48px;
        align-items: center;
        justify-content: space-between;
        gap: 12px;
        font-weight: 700;
        border-bottom: 1px solid var(--line);
    }

    .site-mobile-nav__children {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 1px;
        padding: 10px 0 16px;
        background: var(--line);
    }

    .site-mobile-nav__children a {
        padding: 9px 10px;
        color: var(--ink-soft);
        font-size: 13px;
        background: var(--paper);
    }

    .site-footer__grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 720px) {
    .site-container {
        width: min(100% - 28px, 1180px);
    }

    .site-header__main {
        grid-template-columns: minmax(0, 1fr) 44px;
        min-height: 68px;
    }

    .site-brand {
        min-width: 0;
    }

    .site-brand__mark {
        width: 36px;
        height: 36px;
        grid-template-columns: repeat(3, 5px);
    }

    .site-brand__mark i {
        width: 5px;
        height: 5px;
    }

    .site-brand__text strong {
        font-size: 21px;
    }

    .site-brand__text small {
        display: none;
    }

    .site-search {
        display: none;
    }

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

    .section-heading h2 {
        font-size: 28px;
    }

    .section-heading > p {
        margin-top: 12px;
        font-size: 14px;
    }

    .site-footer__grid {
        grid-template-columns: 1fr;
        gap: 32px;
        padding-top: 44px;
        padding-bottom: 40px;
    }

    .site-footer__bottom-inner {
        display: grid;
        gap: 5px;
        padding: 16px 0;
    }
}