/* TEMPLATE-050：曜石黑、香槟金与象牙白，顶部横向企业布局。 */
:root {
    --s50-ink: #171A1D;
    --s50-paper: #F7F5F0;
    --s50-white: #FFFFFF;
    --s50-gold: #CEAF74;
    --s50-gold-ink: #79602F;
    --s50-muted: #64666A;
    --s50-line: #DEDAD1;
    --s50-dark-line: #3A3C3F;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 180px; }
body { margin: 0; color: var(--s50-ink); background: var(--s50-paper); font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif; font-size: 16px; line-height: 1.75; overflow-wrap: break-word; }
a { color: inherit; text-decoration: none; transition: color .2s, background .2s, border-color .2s; }
a:hover { color: var(--s50-gold-ink); }
button, input, select, textarea { font: inherit; }
button, input { border-radius: 0; }
button { cursor: pointer; }
button:disabled { cursor: default; }
a:focus-visible, button:focus-visible, input:focus-visible { outline: 3px solid var(--s50-gold); outline-offset: 4px; }
img { display: block; max-width: 100%; height: auto; }
figure, p, ul, ol, h1, h2, h3, h4 { margin: 0; }
h1, h2, h3, h4 { font-weight: 650; line-height: 1.4; }
em { font-style: normal; }
[hidden] { display: none !important; }
::selection { color: var(--s50-ink); background: var(--s50-gold); }
.s50-wrap { width: min(1280px, calc(100% - 80px)); margin-inline: auto; }
.s50-shell, #s50Main { min-width: 0; }
.s50-sr-only { position: absolute; width: 1px; height: 1px; padding: 0; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; }
.s50-skip { position: fixed; top: -100px; left: 20px; padding: 12px 20px; z-index: 100; background: var(--s50-gold); color: var(--s50-ink); }
.s50-skip:focus { top: 12px; }
.s50-kicker { color: var(--s50-gold-ink); font-size: 11px; font-weight: 700; letter-spacing: .16em; line-height: 1.6; }
.s50-section { padding-block: 84px; }
.s50-section-head { position: relative; margin-bottom: 36px; }
.s50-section-head h2 { margin: 10px 0 12px; font-size: clamp(25px, 2.5vw, 38px); }
.s50-section-head > p:not(.s50-kicker) { color: var(--s50-muted); max-width: 760px; }
.s50-section-head > a { display: inline-block; margin-top: 18px; font-size: 14px; border-bottom: 1px solid var(--s50-gold); }
.s50-section-head.is-centered { text-align: center; }
.s50-section-head.is-centered > p { margin-inline: auto; }
.s50-more { font-size: 14px; font-weight: 600; }
.s50-button { display: inline-flex; justify-content: center; align-items: center; gap: 24px; min-height: 48px; padding: 12px 24px; border: 1px solid var(--s50-gold); background: var(--s50-gold); color: var(--s50-ink); font-size: 14px; font-weight: 650; }
.s50-button:hover { background: #DBC08C; color: var(--s50-ink); border-color: #DBC08C; }
.s50-button.is-outline { background: transparent; border-color: var(--s50-line); color: inherit; }
.s50-button.is-outline:hover { border-color: var(--s50-gold-ink); color: var(--s50-gold-ink); }
/* 导航以横向多层结构呈现，无侧栏占位。 */
.s50-header { position: relative; z-index: 40; background: var(--s50-white); }
.s50-utility { color: #D5D6D7; background: var(--s50-ink); font-size: 11px; }
.s50-utility .s50-wrap { display: flex; align-items: center; justify-content: space-between; gap: 20px; min-height: 32px; }
.s50-utility a:hover { color: var(--s50-gold); }
.s50-brand-row { min-height: 88px; display: flex; align-items: center; justify-content: space-between; gap: 30px; }
.s50-brand { display: flex; align-items: center; gap: 14px; min-width: 0; }
.s50-brand > span:last-child { min-width: 0; }
.s50-brand strong { display: block; font-size: 24px; line-height: 1.4; overflow-wrap: anywhere; }
.s50-brand small { display: block; font-size: 9px; letter-spacing: .14em; margin-top: 3px; color: var(--s50-muted); }
.s50-mark { display: flex; align-items: center; justify-content: center; width: 51px; height: 51px; flex: 0 0 51px; font-size: 30px; font-weight: 800; background: var(--s50-ink); color: var(--s50-gold); line-height: 1; }
.s50-mark > span { align-self: flex-start; margin-top: 9px; font-size: 16px; }
.s50-brand-note { color: var(--s50-muted); font-size: 11px; line-height: 1.8; border-left: 1px solid var(--s50-line); padding-left: 28px; margin-left: auto; }
.s50-brand-note strong { color: var(--s50-ink); font-size: 13px; font-weight: 500; }
.s50-header-contact { padding: 10px 18px; background: var(--s50-ink); color: var(--s50-white); font-size: 12px; flex-shrink: 0; }
.s50-header-contact span { margin-left: 18px; color: var(--s50-gold); }
.s50-header-contact:hover { background: var(--s50-gold); color: var(--s50-ink); }
.s50-header-contact:hover span { color: inherit; }
.s50-menu-toggle { display: none; color: var(--s50-ink); border: 1px solid var(--s50-line); padding: 7px 12px; background: transparent; white-space: nowrap; }
.s50-navigation { border-block: 1px solid var(--s50-line); }
.s50-navigation-inner { display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.s50-navigation-inner > nav { min-width: 0; flex: 1; }
.s50-nav, .s50-nav ul { padding: 0; list-style: none; }
.s50-nav { display: flex; flex-wrap: wrap; }
.s50-nav > li { position: relative; }
.s50-nav > li > a { display: block; padding: 15px 18px; font-size: 14px; font-weight: 600; border-bottom: 2px solid transparent; margin-bottom: -1px; }
.s50-nav > li > a[aria-current], .s50-nav > li > a:hover { color: var(--s50-gold-ink); border-bottom-color: var(--s50-gold); }
.s50-nav ul { position: absolute; top: 100%; left: 0; width: 200px; background: var(--s50-white); border: 1px solid var(--s50-line); box-shadow: 0 12px 24px #171A1D12; visibility: hidden; opacity: 0; }
.s50-nav li:hover > ul, .s50-nav li:focus-within > ul { visibility: visible; opacity: 1; }
.s50-nav ul a { display: block; padding: 10px 18px; font-size: 13px; }
.s50-nav ul a:hover { background: var(--s50-paper); }
.s50-header-search { display: flex; flex: 0 1 220px; min-width: 150px; background: var(--s50-paper); }
.s50-header-search input { width: 100%; min-width: 0; padding: 8px 12px; background: transparent; border: 0; font-size: 12px; color: var(--s50-ink); }
.s50-header-search button { flex-shrink: 0; border: 0; background: transparent; font-size: 24px; line-height: 1; width: 38px; min-height: 38px; color: var(--s50-ink); }
/* 首页是垂直堆叠的居中品牌区与宽幅照片，不使用分屏或轮播。 */
.s50-masthead { background: linear-gradient(var(--s50-ink) 0 84%, var(--s50-paper) 84%); padding-top: 64px; }
.s50-masthead-copy { text-align: center; color: var(--s50-white); padding-bottom: 40px; }
.s50-masthead .s50-kicker { color: var(--s50-gold); }
.s50-masthead h1 { margin: 18px 0 20px; font-size: clamp(34px, 4.5vw, 66px); line-height: 1.3; letter-spacing: -.035em; }
.s50-masthead h1 em { display: block; color: var(--s50-gold); }
.s50-masthead-copy > p:not(.s50-kicker) { max-width: 650px; margin-inline: auto; color: #C7C8C9; font-size: 14px; }
.s50-masthead-actions { display: flex; justify-content: center; flex-wrap: wrap; gap: 14px; margin-top: 26px; }
.s50-masthead .is-outline { border-color: #5C5D5F; color: var(--s50-white); }
.s50-masthead .is-outline:hover { border-color: var(--s50-gold); color: var(--s50-gold); }
.s50-panorama { position: relative; }
.s50-panorama > img { width: 100%; aspect-ratio: 18 / 7; object-fit: cover; }
.s50-panorama figcaption { position: absolute; inset: auto 0 0; padding: 54px 36px 28px; color: var(--s50-white); background: linear-gradient(transparent, #090B0DD9); }
.s50-panorama figcaption > span { color: var(--s50-gold); font-size: 10px; letter-spacing: .18em; }
.s50-panorama figcaption p { font-size: 20px; margin-top: 6px; }
.s50-panorama figcaption a { position: absolute; right: 36px; bottom: 30px; font-size: 12px; border-bottom: 1px solid var(--s50-gold); }
.s50-panorama figcaption a:hover { color: var(--s50-gold); }
.s50-business-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 20px; }
.s50-business-grid article { padding: 30px 24px; background: var(--s50-white); border: 1px solid var(--s50-line); border-top: 3px solid var(--s50-gold); display: flex; flex-direction: column; transition: transform .2s; }
.s50-business-grid article:hover { transform: translateY(-5px); }
.s50-business-icon { width: 52px; height: 52px; display: grid; place-items: center; background: var(--s50-paper); border: 1px solid var(--s50-line); color: var(--s50-gold-ink); font-size: 20px; margin-bottom: 24px; }
.s50-business-grid .s50-kicker { font-size: 9px; letter-spacing: .09em; }
.s50-business-grid h3 { font-size: 20px; margin: 8px 0 14px; }
.s50-business-grid article > p:not(.s50-kicker) { color: var(--s50-muted); font-size: 13px; margin-bottom: 24px; }
.s50-business-grid article > a { font-size: 12px; font-weight: 600; display: flex; justify-content: space-between; border-top: 1px solid var(--s50-line); padding-top: 16px; margin-top: auto; }
.s50-about-section { background: #EDE9E0; }
.s50-about-home { display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: 80px; }
.s50-about-collage { position: relative; padding: 0 46px 38px 0; }
.s50-about-collage > img { width: 100%; aspect-ratio: 9 / 10; max-height: 510px; object-fit: cover; }
.s50-about-collage > div { position: absolute; right: 0; bottom: 0; width: 230px; padding: 25px; background: var(--s50-ink); color: var(--s50-white); border-top: 4px solid var(--s50-gold); }
.s50-about-collage span { font-size: 26px; font-weight: 750; line-height: 1.3; color: var(--s50-gold); }
.s50-about-collage p { margin-top: 12px; font-size: 12px; color: #CCCCCD; }
.s50-about-copy h2 { font-size: clamp(26px, 2.5vw, 37px); margin: 12px 0 24px; }
.s50-about-copy > p:not(.s50-kicker) { font-size: 14px; margin-bottom: 18px; color: var(--s50-muted); }
.s50-principles { padding: 10px 0 26px; list-style: none; display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.s50-principles li { padding-left: 14px; border-left: 2px solid var(--s50-gold-ink); }
.s50-principles strong, .s50-principles span { display: block; }
.s50-principles strong { font-size: 14px; font-weight: 600; }
.s50-principles span { color: var(--s50-muted); font-size: 11px; margin-top: 4px; }
.s50-project-grid, .s50-cards { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 26px; }
.s50-card { min-width: 0; background: var(--s50-white); border: 1px solid var(--s50-line); }
.s50-card-photo { display: block; position: relative; overflow: hidden; }
.s50-card-photo img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; transition: transform .4s; }
.s50-card:hover .s50-card-photo img { transform: scale(1.035); }
.s50-card-photo > span { position: absolute; right: 0; bottom: 0; background: var(--s50-gold); color: var(--s50-ink); padding: 8px 16px; }
.s50-card-copy { padding: 24px; }
.s50-card-meta { display: flex; flex-wrap: wrap; gap: 8px 14px; justify-content: space-between; color: var(--s50-muted); font-size: 10px; margin-bottom: 12px; }
.s50-card-meta > span { color: var(--s50-gold-ink); }
.s50-card h3 { font-size: 20px; }
.s50-card-copy > p { color: var(--s50-muted); margin-top: 14px; font-size: 13px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.s50-process-section { padding-block: 68px; background: var(--s50-ink); color: var(--s50-white); }
.s50-process-section .s50-kicker { color: var(--s50-gold); }
.s50-process-section .s50-section-head > p:not(.s50-kicker) { color: #B7B8BA; }
.s50-process { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); list-style: none; padding: 14px 0 0; }
.s50-process li { position: relative; padding: 0 26px; text-align: center; }
.s50-process li::before { content: ""; position: absolute; top: 27px; left: 0; right: 0; height: 1px; background: #595346; }
.s50-process li:first-child::before { left: 50%; }
.s50-process li:last-child::before { right: 50%; }
.s50-process li > span { position: relative; display: grid; place-items: center; width: 54px; height: 54px; margin: 0 auto 22px; border: 1px solid var(--s50-gold); color: var(--s50-gold); background: var(--s50-ink); border-radius: 50%; font-size: 18px; }
.s50-process h3 { font-size: 19px; margin-bottom: 10px; }
.s50-process p { font-size: 12px; color: #B7B8BA; }
.s50-news-board { display: grid; grid-template-columns: 1.7fr 1fr; gap: 48px; }
.s50-news-board > aside { background: var(--s50-white); padding: 30px; border: 1px solid var(--s50-line); }
.s50-news-board > aside h3 { font-size: 20px; }
.s50-news-board > aside p { font-size: 13px; color: var(--s50-muted); margin: 14px 0 22px; }
.s50-news-board > aside > .s50-more { display: inline-block; margin-top: 24px; }
.s50-reading-list { padding: 0; list-style: none; border-top: 1px solid var(--s50-line); }
.s50-reading-list li { display: grid; grid-template-columns: 40px minmax(0, 1fr) 55px; gap: 16px; align-items: baseline; padding: 25px 0; border-bottom: 1px solid var(--s50-line); }
.s50-reading-list li > span { font-size: 22px; font-weight: 300; color: var(--s50-gold-ink); }
.s50-reading-list a { font-size: 17px; line-height: 1.6; }
.s50-reading-list time { font-size: 11px; color: var(--s50-muted); text-align: right; }
.s50-tags { display: flex; flex-wrap: wrap; gap: 9px; }
.s50-tag { padding: 7px 14px; background: var(--s50-white); border: 1px solid var(--s50-line); font-size: 12px; }
.s50-tag:hover { border-color: var(--s50-gold); background: #F0E8D8; color: var(--s50-ink); }
.s50-cta { background: var(--s50-gold); padding-block: 38px; }
.s50-cta > .s50-wrap { display: flex; align-items: center; justify-content: space-between; gap: 32px; }
.s50-cta .s50-kicker { color: #4F4029; }
.s50-cta h2 { font-size: clamp(22px, 2.2vw, 32px); margin-top: 7px; }
.s50-cta .s50-button { background: var(--s50-ink); border-color: var(--s50-ink); color: var(--s50-white); flex-shrink: 0; }
.s50-cta .s50-button:hover { background: #33373B; }
.s50-footer { padding-top: 58px; background: var(--s50-ink); color: #BFC0C1; }
.s50-footer a:hover { color: var(--s50-gold); }
.s50-footer-grid { display: grid; grid-template-columns: 1.5fr .8fr .8fr 1.25fr; gap: 42px; padding-bottom: 48px; }
.s50-footer-grid > div { min-width: 0; }
.s50-footer-brand > a { font-size: 24px; color: var(--s50-white); font-weight: 650; }
.s50-footer-brand p { margin: 20px 0; font-size: 12px; }
.s50-footer-brand > span { font-size: 9px; letter-spacing: .08em; color: var(--s50-gold); }
.s50-footer h2 { font-size: 14px; color: var(--s50-white); margin-bottom: 18px; }
.s50-footer ul { list-style: none; padding: 0; font-size: 12px; }
.s50-footer li + li { margin-top: 8px; }
.s50-footer-connect p { font-size: 12px; margin-bottom: 20px; }
.s50-footer-connect .s50-button:hover { color: var(--s50-ink); }
.s50-copyright { padding-block: 20px; border-top: 1px solid var(--s50-dark-line); display: flex; flex-wrap: wrap; justify-content: space-between; gap: 10px 24px; font-size: 10px; color: #B4B5B7; }
.s50-top { position: fixed; right: 24px; bottom: 24px; z-index: 45; width: 44px; height: 44px; background: var(--s50-ink); border: 1px solid var(--s50-gold); color: var(--s50-gold); font-size: 20px; box-shadow: 0 4px 12px #171A1D26; }
@media (min-width: 1101px) {
    .s50-section-head:not(.is-centered) > a { position: absolute; right: 0; bottom: 4px; max-width: 210px; }
    .s50-section-head:not(.is-centered) { padding-right: 240px; }
}
@media (max-width: 1200px) {
    .s50-nav > li > a { padding-inline: 12px; font-size: 13px; }
    .s50-header-search { flex-basis: 170px; }
    .s50-about-home { gap: 45px; }
    .s50-business-grid article { padding: 24px 20px; }
    .s50-business-grid h3 { font-size: 18px; }
}
@media (max-width: 960px) {
    html { scroll-padding-top: 90px; }
    .s50-wrap { width: calc(100% - 48px); }
    .s50-utility, .s50-brand-note, .s50-header-contact { display: none; }
    .s50-brand-row { min-height: 78px; gap: 18px; }
    .s50-brand strong { font-size: 20px; }
    .s50-enhanced .s50-header { position: sticky; top: 0; }
    .s50-enhanced .s50-menu-toggle { display: block; }
    .s50-navigation-inner { display: block; padding-block: 12px 20px; }
    .s50-nav { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; }
    .s50-nav > li > a { padding: 10px 12px; }
    .s50-nav ul { position: static; visibility: visible; opacity: 1; width: auto; box-shadow: none; border: 0; background: var(--s50-paper); }
    .s50-nav ul a { padding: 8px 12px; font-size: 12px; }
    .s50-header-search { margin-top: 14px; }
    .s50-header-search input { font-size: 16px; }
    .s50-enhanced .s50-navigation { display: none; max-height: calc(100vh - 78px); max-height: calc(100dvh - 78px); overflow-y: auto; overscroll-behavior: contain; }
    .s50-enhanced .s50-navigation.is-open { display: block; }
    .s50-section { padding-block: 60px; }
    .s50-business-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .s50-about-home { gap: 32px; }
    .s50-principles { grid-template-columns: 1fr; gap: 14px; }
    .s50-about-collage { padding-right: 24px; }
    .s50-project-grid, .s50-cards { gap: 18px; }
    .s50-card-copy { padding: 18px; }
    .s50-card h3 { font-size: 18px; }
    .s50-news-board { gap: 24px; grid-template-columns: 1.4fr 1fr; }
    .s50-news-board > aside { padding: 22px; }
    .s50-process li { padding-inline: 15px; }
    .s50-footer-grid { grid-template-columns: 1.2fr 1fr; }
}
@media (max-width: 640px) {
    .s50-wrap { width: calc(100% - 36px); }
    .s50-brand { gap: 10px; }
    .s50-brand strong { font-size: 18px; }
    .s50-brand small { font-size: 7px; letter-spacing: .03em; }
    .s50-mark { width: 40px; height: 40px; flex-basis: 40px; font-size: 25px; }
    .s50-mark > span { margin-top: 7px; font-size: 12px; }
    .s50-menu-toggle { font-size: 12px; padding: 7px 10px; }
    .s50-nav { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .s50-masthead { padding-top: 42px; background: var(--s50-ink); }
    .s50-masthead h1 { font-size: clamp(29px, 7.5vw, 44px); }
    .s50-masthead-copy > p:not(.s50-kicker) { font-size: 13px; }
    .s50-masthead-actions { gap: 10px; }
    .s50-masthead-actions .s50-button { padding: 10px 16px; font-size: 12px; gap: 12px; }
    .s50-panorama { width: 100%; }
    .s50-panorama > img { aspect-ratio: 4 / 3; }
    .s50-panorama figcaption { padding: 45px 20px 22px; }
    .s50-panorama figcaption p { font-size: 17px; }
    .s50-panorama figcaption a { position: static; display: inline-block; margin-top: 14px; }
    .s50-section { padding-block: 44px; }
    .s50-section-head { margin-bottom: 26px; }
    .s50-section-head h2 { font-size: 25px; }
    .s50-section-head > p:not(.s50-kicker) { font-size: 13px; }
    .s50-business-grid { gap: 12px; }
    .s50-business-grid article { padding: 22px 16px; }
    .s50-business-grid h3 { font-size: 17px; }
    .s50-business-grid article > p:not(.s50-kicker) { font-size: 12px; }
    .s50-business-grid .s50-kicker { font-size: 8px; letter-spacing: 0; }
    .s50-business-icon { margin-bottom: 16px; }
    .s50-about-home { grid-template-columns: 1fr; gap: 36px; }
    .s50-about-collage > img { max-height: 380px; }
    .s50-principles { grid-template-columns: 1fr 1fr; gap: 18px; }
    .s50-project-grid, .s50-cards { grid-template-columns: 1fr; gap: 24px; }
    .s50-card-copy { padding: 22px; }
    .s50-card h3 { font-size: 21px; }
    .s50-process-section { padding-block: 44px; }
    .s50-process { grid-template-columns: 1fr 1fr; gap: 32px 18px; }
    .s50-process li { padding: 0; }
    .s50-process li::before { display: none; }
    .s50-process li > span { margin-bottom: 16px; }
    .s50-process h3 { font-size: 18px; }
    .s50-news-board { grid-template-columns: 1fr; gap: 30px; }
    .s50-reading-list li { grid-template-columns: 30px minmax(0, 1fr) 44px; gap: 10px; padding-block: 22px; }
    .s50-reading-list a { font-size: 16px; }
    .s50-cta > .s50-wrap { display: block; }
    .s50-cta .s50-button { margin-top: 24px; }
    .s50-footer { padding-top: 40px; }
    .s50-footer-grid { grid-template-columns: 1fr 1fr; gap: 32px 22px; padding-bottom: 32px; }
    .s50-footer-brand, .s50-footer-connect { grid-column: 1 / -1; }
    .s50-copyright { flex-direction: column; padding-right: 40px; }
    .s50-top { right: 14px; bottom: 16px; }
}
@media (max-width: 359px) {
    .s50-business-grid { grid-template-columns: 1fr; }
    .s50-brand small { display: none; }
}
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after { animation: none !important; transition: none !important; }
}
@media print {
    .s50-header, .s50-footer, .s50-top, .s50-cta, .s50-skip { display: none !important; }
    body { background: #FFFFFF; color: #000000; }
    .s50-wrap { width: 100%; }
    .s50-section { padding-block: 24px; }
    a { color: inherit; }
}