:root {
  --ink: #171a18;
  --ink-soft: #414741;
  --muted: #6c706b;
  --paper: #f7f4ee;
  --surface: #fffdf8;
  --line: rgba(23, 26, 24, .12);
  --line-strong: rgba(23, 26, 24, .24);
  --olive: #59634f;
  --clay: #a86645;
  --highlight: #d8c5ab;
  --radius: 22px;
  --shadow: 0 22px 60px rgba(27, 25, 18, .08);
  --shell: min(1240px, calc(100vw - 48px));
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "PingFang SC", "Noto Sans CJK SC", "Microsoft YaHei", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
body.dialog-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; }
img { display: block; max-width: 100%; }
p { margin: 0; color: var(--ink-soft); line-height: 1.78; }
h1, h2, h3 { margin: 0; line-height: 1.15; font-weight: 520; letter-spacing: -.045em; }
.shell { width: var(--shell); margin: 0 auto; }
.skip-link { position: fixed; left: 16px; top: -48px; padding: 10px 14px; background: var(--ink); color: #fff; z-index: 1001; }
.skip-link:focus { top: 12px; }
.eyebrow { margin-bottom: 17px; font: 600 12px/1.2 Arial, sans-serif; letter-spacing: .22em; color: var(--olive); }
.site-header {
  position: sticky; top: 0; z-index: 30; backdrop-filter: blur(18px);
  background: rgba(247, 244, 238, .82); border-bottom: 1px solid var(--line);
}
.header-inner { height: 78px; display: flex; align-items: center; gap: 42px; }
.brand { display: flex; align-items: baseline; gap: 14px; margin-right: auto; }
.brand-mark { font: 700 26px/1 Arial, sans-serif; letter-spacing: -.06em; }
.brand-text { font: 500 11px/1 Arial, sans-serif; letter-spacing: .2em; text-transform: uppercase; color: var(--muted); }
.desktop-nav { display: flex; gap: 30px; font-size: 14px; color: var(--ink-soft); }
.desktop-nav a { position: relative; padding: 8px 0; }
.desktop-nav a::after { content: ""; position: absolute; left: 0; bottom: 0; width: 100%; height: 1px; transform: scaleX(0); transform-origin: right; transition: transform .28s ease; background: var(--ink); }
.desktop-nav a:hover::after, .desktop-nav a:focus-visible::after { transform: scaleX(1); transform-origin: left; }
.contact-chip { border: 1px solid var(--ink); padding: 10px 16px; border-radius: 999px; font-size: 13px; display: grid; gap: 3px; line-height: 1.25; background: rgba(255,253,248,.56); }
.contact-chip span { white-space: nowrap; }
.menu-toggle, .mobile-nav { display: none; }
.hero { padding: 64px 0 72px; }
.hero-grid { display: grid; grid-template-columns: .88fr 1fr; gap: 62px; align-items: center; }
.hero-copy { padding-top: 15px; }
.hero h1 { font-size: clamp(52px, 6vw, 78px); font-family: "Songti SC", "STSong", serif; }
.hero h1 span { display: block; margin-top: 25px; max-width: 530px; font: 520 clamp(25px, 3vw, 35px)/1.35 "PingFang SC", "Microsoft YaHei", sans-serif; letter-spacing: -.06em; }
.hero-lead { max-width: 492px; margin: 25px 0 36px; font-size: 16px; }
.hero-actions { display: flex; gap: 13px; align-items: center; flex-wrap: wrap; }
.button { display: inline-flex; align-items: center; justify-content: center; height: 52px; padding: 0 27px; border-radius: 999px; font-size: 15px; transition: transform .2s, background .2s, border-color .2s; }
.button:hover { transform: translateY(-2px); }
.button-primary { color: #fff; background: var(--ink); }
.hero-contact-card { min-height: 52px; padding: 9px 18px; border: 1px solid var(--line-strong); border-radius: 18px; background: var(--surface); box-shadow: 0 12px 30px rgba(27,25,18,.06); display: grid; gap: 2px; }
.hero-contact-card span { color: var(--muted); font-size: 12px; letter-spacing: .14em; text-transform: uppercase; }
.hero-contact-card strong { font-size: 14px; line-height: 1.35; font-weight: 600; letter-spacing: .01em; }
.button-ghost { border: 1px solid var(--line-strong); background: var(--surface); }
.hero-stats { display: flex; gap: 38px; padding: 42px 0 0; margin: 0; }
.hero-stats div { min-width: 84px; }
.hero-stats dt { font: 500 37px/1 "Times New Roman", serif; letter-spacing: -.05em; }
.hero-stats dt sup { font-size: .55em; }
.hero-stats dd { margin: 10px 0 0; font-size: 13px; color: var(--muted); }
.hero-visual { position: relative; height: 646px; }
.hero-image { position: absolute; overflow: hidden; margin: 0; background: #ddd; box-shadow: var(--shadow); }
.hero-image img { width: 100%; height: 100%; object-fit: cover; }
.hero-image.primary { inset: 0 68px 84px 0; border-radius: 94px 12px 12px 12px; }
.hero-image.secondary { width: 292px; height: 218px; right: 0; bottom: 0; border: 9px solid var(--paper); border-radius: 12px 12px 74px 12px; }
.hero-caption { position: absolute; left: 28px; bottom: 36px; width: 233px; padding: 18px 20px; border-radius: 14px; background: rgba(255,253,248,.93); box-shadow: var(--shadow); }
.hero-caption span { display: block; font: 600 10px/1 Arial, sans-serif; letter-spacing: .2em; color: var(--olive); margin-bottom: 10px; }
.hero-caption strong { display: block; font-size: 13px; line-height: 1.5; letter-spacing: .04em; }
.profile-band { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); padding: 38px 0; }
.band-grid { display: grid; grid-template-columns: 1fr auto; gap: 60px; align-items: center; }
.band-grid p { max-width: 690px; font-size: 19px; line-height: 1.72; color: var(--ink); }
.discipline-list { display: grid; grid-template-columns: repeat(2, auto); gap: 12px 34px; list-style: none; padding: 0; margin: 0; font-size: 14px; color: var(--muted); }
.discipline-list li::before { content: "•"; color: var(--clay); padding-right: 11px; }
.section { padding: 92px 0; }
.section-heading { display: flex; justify-content: space-between; align-items: end; gap: 50px; margin-bottom: 48px; }
.section-heading h2 { font-family: "Songti SC", STSong, serif; font-size: clamp(38px, 5vw, 51px); }
.section-heading > p { max-width: 425px; font-size: 15px; }
.section-heading.vertical { display: block; margin: 0; }
.section-heading.vertical h2 { margin-bottom: 20px; }
.section-heading.vertical > p:last-child { max-width: 290px; }
.featured-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 24px; }
.project-card { min-width: 0; }
.project-open { cursor: pointer; border: 0; text-align: left; width: 100%; padding: 0; background: var(--surface); border-radius: var(--radius); overflow: hidden; transition: transform .32s ease, box-shadow .32s ease; }
.project-open:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.project-media { overflow: hidden; background: #ece7df; }
.project-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .52s ease; }
.project-open:hover .project-media img { transform: scale(1.035); }
.featured .project-media { aspect-ratio: 16 / 10.5; }
.project-meta { padding: 30px 30px 33px; }
.tags { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 18px; }
.tags span { border: 1px solid var(--line); border-radius: 999px; padding: 7px 11px 6px; font-size: 12px; color: var(--muted); }
.project-meta h3 { font-size: 28px; margin-bottom: 14px; }
.project-meta p { font-size: 14px; margin-bottom: 22px; }
.view-link { display: inline-flex; align-items: center; gap: 8px; font-size: 14px; color: var(--ink); }
.view-link i { font-style: normal; transition: transform .2s; }
.project-open:hover .view-link i { transform: translate(3px,-3px); }
.project-card.wide { grid-column: 1 / -1; }
.split-card { display: grid; grid-template-columns: 1.1fr .9fr; align-items: stretch; }
.split-card .project-media { aspect-ratio: auto; min-height: 375px; }
.split-card .project-meta { align-self: center; padding: 44px 48px; }
.secondary-projects { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 24px; margin-top: 24px; }
.compact .project-media { aspect-ratio: 16 / 11; }
.compact .project-meta { padding: 25px 25px 28px; }
.compact .project-meta h3 { font-size: 22px; }
.compact .project-meta p { margin-bottom: 0; }
.capabilities { background: #171a18; color: #f4f0e7; }
.capabilities p { color: rgba(244,240,231,.68); }
.capabilities .eyebrow { color: #cdb89c; }
.capabilities-grid { display: grid; grid-template-columns: 315px 1fr; gap: 65px; }
.capability-cards { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 15px; }
.capability { border: 1px solid rgba(244,240,231,.13); border-radius: 19px; padding: 30px 27px; min-height: 188px; }
.capability span { color: #cdb89c; font: 600 12px/1 Arial, sans-serif; letter-spacing: .18em; }
.capability h3 { font-size: 23px; margin: 30px 0 11px; letter-spacing: -.04em; }
.capability p { font-size: 14px; }
.tool-row { display: flex; gap: 11px; flex-wrap: wrap; padding-top: 54px; }
.tool-row span { border: 1px solid rgba(244,240,231,.16); color: rgba(244,240,231,.78); border-radius: 999px; padding: 10px 16px; font-size: 13px; }
.timeline { border-top: 1px solid var(--line); }
.timeline-item { display: grid; grid-template-columns: 215px 1fr; gap: 60px; border-bottom: 1px solid var(--line); padding: 42px 0; }
.timeline-date { color: var(--muted); font: 500 14px/1.6 Arial, sans-serif; letter-spacing: .05em; }
.timeline-content { max-width: 770px; }
.company { margin-bottom: 10px; font-size: 14px; color: var(--olive); }
.timeline-content h3 { font-size: 30px; margin-bottom: 22px; }
.timeline-content ul { list-style: none; margin: 0; padding: 0; }
.timeline-content li { padding: 13px 0; color: var(--ink-soft); line-height: 1.75; border-top: 1px dashed var(--line); font-size: 15px; }
.timeline-content li:first-child { padding-top: 0; border-top: 0; }
.timeline-content > p:last-child { font-size: 15px; }
.awards { background: var(--surface); }
.awards-grid { display: grid; grid-template-columns: 315px 1fr; gap: 65px; }
.award-list { border-top: 1px solid var(--line); }
.award { display: grid; grid-template-columns: 92px 1fr; gap: 36px; padding: 32px 0; border-bottom: 1px solid var(--line); }
.award time { font: 500 24px/1 "Times New Roman", serif; color: var(--clay); }
.award h3 { font-size: 22px; margin-bottom: 11px; }
.award p { font-size: 14px; }
.contact { padding: 96px 0; background: var(--ink); color: #f4f0e7; }
.contact .eyebrow { color: #cdb89c; }
.contact-grid { display: grid; grid-template-columns: 1fr 420px; align-items: end; gap: 60px; }
.contact h2 { max-width: 640px; font: 500 clamp(36px,5vw,53px)/1.24 "Songti SC", STSong, serif; margin-bottom: 20px; }
.contact p:not(.eyebrow) { color: rgba(244,240,231,.68); }
.contact-links { display: grid; gap: 12px; }
.contact-item { border: 1px solid rgba(244,240,231,.18); border-radius: 15px; display: flex; justify-content: space-between; align-items: center; gap: 18px; padding: 21px 22px; font-size: 15px; background: rgba(244,240,231,.04); }
.contact-item span { color: rgba(244,240,231,.5); }
.contact-item strong { color: #f4f0e7; font-weight: 500; text-align: right; word-break: break-all; }
.site-footer { background: var(--ink); color: rgba(244,240,231,.48); border-top: 1px solid rgba(244,240,231,.1); }
.site-footer .shell { min-height: 69px; display: flex; justify-content: space-between; align-items: center; font-size: 13px; }
.site-footer p { color: inherit; }
.project-dialog { margin: 0; width: 100vw; max-width: none; height: 100dvh; max-height: none; border: 0; padding: 0; background: var(--paper); }
.project-dialog::backdrop { background: rgba(16,18,16,.45); }
.dialog-shell { width: min(1180px, calc(100% - 48px)); margin: 0 auto; padding: 56px 0 52px; position: relative; }
.dialog-close { position: fixed; top: 22px; right: max(24px, calc((100vw - 1180px) / 2)); z-index: 5; width: 50px; height: 50px; border: 1px solid var(--line); background: var(--surface); border-radius: 999px; cursor: pointer; font-size: 28px; line-height: 1; }
.dialog-head { max-width: 810px; margin: 12px 0 38px; }
.dialog-category { color: var(--olive); font: 600 12px/1 Arial,sans-serif; letter-spacing: .17em; margin-bottom: 17px; }
.dialog-head h2 { font-family: "Songti SC", STSong, serif; font-size: clamp(36px,5vw,52px); margin-bottom: 18px; }
.dialog-desc { font-size: 16px; max-width: 680px; }
.dialog-facts { margin-top: 28px; display: flex; flex-wrap: wrap; gap: 11px; }
.dialog-facts span { background: var(--surface); border-radius: 999px; border: 1px solid var(--line); padding: 10px 15px; font-size: 13px; color: var(--muted); }
.gallery-stage { position: relative; width: 100%; aspect-ratio: 4 / 2.6; border-radius: 16px; background: #eee7dd; overflow: hidden; display: flex; align-items: center; justify-content: center; }
.gallery-stage img { width: 100%; height: 100%; object-fit: contain; background: #fff; }
.gallery-control { position: absolute; top: 50%; transform: translateY(-50%); z-index: 2; width: 48px; height: 48px; background: rgba(23,26,24,.72); color: #fff; border: 0; border-radius: 999px; cursor: pointer; }
.gallery-control.prev { left: 18px; }
.gallery-control.next { right: 18px; }
.gallery-bottom { display: flex; justify-content: space-between; align-items: center; gap: 22px; padding-top: 18px; }
.gallery-bottom p { white-space: nowrap; font-size: 13px; color: var(--muted); }
.gallery-thumbs { display: flex; gap: 9px; overflow-x: auto; padding: 2px; }
.gallery-thumbs button { flex: none; width: 82px; height: 59px; border: 2px solid transparent; padding: 0; border-radius: 7px; overflow: hidden; background: #fff; cursor: pointer; opacity: .64; }
.gallery-thumbs button.active { border-color: var(--clay); opacity: 1; }
.gallery-thumbs img { width: 100%; height: 100%; object-fit: cover; }
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .56s ease, transform .56s ease; }
.reveal.visible { opacity: 1; transform: none; }
@media (max-width: 1000px) {
  :root { --shell: min(100% - 40px, 760px); }
  .desktop-nav, .contact-chip { display: none; }
  .menu-toggle { display: grid; align-content: center; gap: 7px; width: 48px; height: 48px; background: transparent; border: 1px solid var(--line); border-radius: 999px; padding: 0 14px; cursor: pointer; }
  .menu-toggle span { display: block; height: 1px; background: var(--ink); }
  .mobile-nav { border-top: 1px solid var(--line); padding: 0 20px 15px; flex-direction: column; }
  .mobile-nav.open { display: flex; }
  .mobile-nav a { padding: 14px 4px; border-bottom: 1px solid var(--line); }
  .hero-grid { display: flex; flex-direction: column; gap: 50px; }
  .hero-copy { width: 100%; }
  .hero-visual { width: 100%; height: min(620px, 74vw); min-height: 410px; }
  .band-grid, .capabilities-grid, .awards-grid, .contact-grid { grid-template-columns: 1fr; gap: 43px; }
  .section-heading { align-items: start; flex-direction: column; gap: 20px; }
  .featured-grid, .secondary-projects { grid-template-columns: 1fr; }
  .project-card.wide { grid-column: auto; }
  .split-card { display: block; }
  .split-card .project-media { min-height: 0; aspect-ratio: 16/10.5; }
  .split-card .project-meta { padding: 30px; }
  .timeline-item { grid-template-columns: 1fr; gap: 15px; }
}
@media (max-width: 620px) {
  :root { --shell: calc(100% - 30px); --radius: 17px; }
  .header-inner { height: 70px; }
  .brand-text { display: none; }
  .hero { padding-top: 42px; }
  .hero h1 { font-size: 49px; }
  .hero h1 span { font-size: 27px; }
  .hero-stats { gap: 22px; }
  .hero-contact-card { width: 100%; }
  .hero-stats dt { font-size: 31px; }
  .hero-visual { height: 405px; min-height: 0; }
  .hero-image.primary { inset: 0 28px 64px 0; border-radius: 55px 10px 10px 10px; }
  .hero-image.secondary { height: 128px; width: 177px; border-width: 6px; border-radius: 9px 9px 40px 9px; }
  .hero-caption { left: 16px; bottom: 26px; width: 164px; padding: 12px; }
  .hero-caption strong { font-size: 11px; }
  .profile-band, .section { padding: 66px 0; }
  .discipline-list, .capability-cards { grid-template-columns: 1fr; }
  .project-meta { padding: 23px 20px 26px; }
  .project-meta h3 { font-size: 24px; }
  .contact { padding: 68px 0; }
  .dialog-shell { width: calc(100% - 26px); padding: 72px 0 32px; }
  .dialog-close { top: 14px; right: 14px; width: 46px; height: 46px; }
  .gallery-stage { aspect-ratio: 1 / .82; }
  .gallery-control { width: 43px; height: 43px; }
  .gallery-bottom { display: block; }
  .gallery-thumbs { margin-top: 13px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition-duration: .001ms !important; animation-duration: .001ms !important; scroll-behavior: auto !important; }
  .reveal { opacity: 1; transform: none; }
}