:root {
  color-scheme: light;
  --ink: #101829;
  --muted: #4e5e77;
  --line: #dbe3ef;
  --paper: #fff;
  --soft: #f2f5fa;
  --cobalt: #082e83;
  --cobalt-dark: #062263;
  --signal: #ffdb20;
  --masthead-height: clamp(68px, 5.55vw, 86px);
  --page-width: min(1376px, calc(100% - clamp(48px, 7vw, 128px)));
  --section-space: clamp(56px, 6vw, 96px);
  --section-gap: clamp(20px, 2.4vw, 36px);
  --column-gap: clamp(16px, 1.8vw, 28px);
  --sans: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", Arial, sans-serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--masthead-height) + 15px); }
body { margin: 0; font: 16px/1.7 var(--sans); color: var(--ink); background: var(--paper); }
body:has(dialog[open]) { overflow: hidden; }
a { color: inherit; text-decoration: none; }
button, summary { cursor: pointer; }
button { font: inherit; color: inherit; }
img { max-width: 100%; display: block; }
h1, h2, h3, p, figure { margin: 0; }
[hidden] { display: none !important; }
:focus-visible { outline: 2px solid var(--cobalt); outline-offset: 4px; }
.hero :focus-visible, .proof-section :focus-visible, .contact-banner :focus-visible { outline-color: var(--signal); }
.symbols { position: absolute; width: 0; height: 0; pointer-events: none; }
.icon { flex: none; width: 21px; height: 21px; fill: none; stroke: currentColor; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; vertical-align: middle; }
.wrap { width: var(--page-width); margin-inline: auto; }
.section { padding-block: var(--section-space); }
.eyebrow { font: 600 12px/1.4 var(--mono); letter-spacing: .12em; }
.sr-only, .skip-link:not(:focus) { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
.skip-link:focus { position: fixed; z-index: 12; top: 8px; left: 8px; padding: 8px 14px; background: white; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 5;
  min-height: var(--masthead-height);
  background: var(--paper);
  border-bottom: 1px solid var(--line);
}
.nav-shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  width: var(--page-width);
  min-height: calc(var(--masthead-height) - 1px);
  margin-inline: auto;
}
.brand { display: flex; gap: 12px; align-items: center; flex: none; }
.brand-mark { display: flex; align-items: center; padding-right: 11px; border-right: 1px solid #a7afbf; }
.brand-mark img { width: clamp(62px, 5.5vw, 88px); height: auto; }
.brand > span:last-child { display: grid; gap: 2px; line-height: 1.14; }
.brand strong { font-size: clamp(21px, 1.95vw, 31px); font-weight: 760; letter-spacing: .045em; }
.brand small { font-size: clamp(12px, 1.07vw, 18px); letter-spacing: .04em; }
.site-header nav { display: flex; gap: clamp(17px, 3.4vw, 51px); align-items: center; }
.site-header nav a {
  display: flex;
  align-items: center;
  min-height: 46px;
  white-space: nowrap;
  font-size: clamp(14px, 1.17vw, 18px);
  font-weight: 650;
  transition: color .18s, background .18s;
}
.site-header nav a:not(.nav-contact):is(:hover, [aria-current]) { color: var(--cobalt); }
.site-header nav .nav-contact {
  padding-inline: clamp(13px, 1.5vw, 23px);
  border-radius: 4px;
  background: var(--cobalt);
  color: #fff;
}
.site-header nav .nav-contact:is(:hover, [aria-current]) { background: var(--cobalt-dark); }

.hero {
  position: relative;
  isolation: isolate;
  height: clamp(495px, 52vw, 890px);
  overflow: hidden;
  color: #fff;
  background: var(--cobalt);
}
.hero-blueprint, .hero-blueprint-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  pointer-events: none;
}
.hero-blueprint { z-index: -2; }
.hero-blueprint-video { z-index: -1; }
@media (prefers-reduced-motion: reduce) {
  .hero-blueprint-video { display: none; }
}
.hero-inner {
  display: grid;
  grid-template-rows: 1fr auto;
  width: var(--page-width);
  height: 100%;
  margin-inline: auto;
  padding-block: clamp(106px, 11.93vw, 204px) clamp(32px, 2.7vw, 47px);
}
.hero-copy { align-self: start; }
.accent-slash { display: flex; align-items: center; gap: .54em; }
.accent-slash::before {
  content: "";
  width: .31em;
  height: .9em;
  flex: none;
  margin-left: .12em;
  background: var(--signal);
  transform: skewX(-17deg);
}
.hero-kicker {
  gap: .88em;
  font-size: clamp(19px, 1.88vw, 31px);
  font-weight: 600;
  line-height: 1.32;
  letter-spacing: .13em;
}
.hero-kicker::before { width: .45em; height: 1.06em; }
.hero h1 {
  margin-top: clamp(17px, 1.8vw, 29px);
  font-size: clamp(42px, 5.2vw, 84px);
  font-weight: 800;
  line-height: 1.14;
  letter-spacing: .013em;
}
.primary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: clamp(48px, 3.75vw, 58px);
  padding: 8px clamp(21px, 2.1vw, 34px);
  border-radius: 4px;
  background: #fff;
  color: var(--cobalt);
  white-space: nowrap;
  font-size: clamp(16px, 1.32vw, 21px);
  font-weight: 720;
  transition: background .18s, color .18s;
}
.primary-button:hover { background: var(--signal); color: var(--cobalt-dark); }
.hero-action { margin-top: clamp(24px, 2.8vw, 42px); }
.workflow {
  display: flex;
  align-items: center;
  gap: clamp(12px, 1.16vw, 20px);
  width: 100%;
  margin: 0;
  padding: 0;
  list-style: none;
}
.workflow li {
  display: flex;
  flex: 1;
  align-items: center;
  gap: clamp(9px, 1.3vw, 23px);
  min-width: 0;
  white-space: nowrap;
  font-size: clamp(16px, 1.8vw, 29px);
  line-height: 1.35;
  font-weight: 700;
  letter-spacing: .025em;
}
.workflow li::before {
  content: "";
  width: .74em;
  height: .74em;
  flex: none;
  border: max(2px, .11em) solid var(--signal);
}
.workflow li:not(:last-child)::after { content: ""; flex: 1; height: 1px; background: #d9e6fc; }
.workflow li:last-child { flex: none; }

.quick-links {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-block: 1px solid var(--line);
}
.quick-links a {
  display: flex;
  gap: clamp(12px, 1.45vw, 22px);
  align-items: center;
  min-height: 84px;
  padding: 12px clamp(12px, 2vw, 28px);
  transition: background .2s;
}
.quick-links a + a { border-left: 1px solid var(--line); }
.quick-links a:is(:hover, :focus-visible) { background: var(--soft); color: var(--cobalt); }
.quick-icon { display: flex; flex: none; color: var(--cobalt); }
.quick-links strong, .quick-links small { display: block; }
.quick-links strong { font-size: 16px; font-weight: 700; }
.quick-links small { font-size: 13px; color: var(--muted); }

.section-heading {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: var(--column-gap);
  margin-bottom: var(--section-gap);
}
.section-kicker { color: var(--cobalt); }
h2 { font-size: clamp(32px, 3.2vw, 49px); line-height: 1.2; letter-spacing: -.025em; font-weight: 700; }
.section-heading h2 { flex: none; }
.section-heading > p { max-width: 26em; color: var(--muted); line-height: 1.75; text-wrap: pretty; }
.service-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-block: 1px solid var(--line); }
.service-grid article { position: relative; padding: 24px clamp(14px, 1.8vw, 27px); }
.service-grid article + article { border-left: 1px solid var(--line); }
.service-grid .icon { width: 25px; height: 25px; color: var(--cobalt); }
.service-number { position: absolute; right: clamp(14px, 1.8vw, 27px); top: 25px; font: 12px var(--mono); color: var(--muted); }
.service-grid h3 { margin: 19px 0 8px; font-size: clamp(16px, 1.37vw, 21px); line-height: 1.4; }
.service-grid p { color: var(--muted); font-size: 14px; line-height: 1.7; text-wrap: pretty; }

.cases-section { padding-top: clamp(37px, 3.3vw, 52px); }
.case-heading h2 { white-space: nowrap; }
.project-spotlight { position: relative; isolation: isolate; display: flex; justify-content: space-between; align-items: end; gap: 18px; min-height: clamp(238px, 28vw, 400px); margin-top: var(--section-gap); padding: clamp(14px, 2.5vw, 36px); border-radius: 8px; overflow: hidden; background: #223047; color: #fff; }
.spotlight-media, .spotlight-media img, .spotlight-media::after { position: absolute; inset: 0; }
.spotlight-media { z-index: -1; }
.spotlight-media::after { content: ""; background: linear-gradient(0deg, #10121bdb, transparent 56%); }
.spotlight-media img { width: 100%; height: 100%; object-fit: cover; object-position: center 53%; opacity: 0; transition: opacity .45s; }
.spotlight-media img.active { opacity: 1; }
.spotlight-caption p { color: #e0e1ec; margin-bottom: 4px; }
.spotlight-caption span { font-size: clamp(20px, 2.4vw, 34px); font-weight: 650; letter-spacing: -.04em; }
.slide-controls { display: flex; align-items: center; gap: 8px; flex: none; }
.slide-indicator { color: #fff; padding-right: 6px; font: 13px var(--mono); }
.slide-button {
  min-height: 44px;
  padding-inline: 12px;
  border: 1px solid #ffffff80;
  border-radius: 4px;
  background: #071c4db3;
  color: #fff;
  font-size: 13px;
  white-space: nowrap;
  transition: background .2s;
}
.slide-button:is(:hover, :focus-visible) { background: var(--cobalt); }
.project-spotlight :focus-visible { outline-color: var(--signal); }
.icon-button { display: grid; width: 44px; height: 44px; place-items: center; padding: 0; border: 1px solid currentColor; border-radius: 6px; background: transparent; transition: background .2s; }
.project-filters { display: flex; flex-wrap: wrap; gap: 4px clamp(12px, 1.55vw, 23px); }
.project-filters button {
  min-height: 44px;
  padding: 5px 0;
  border: 0;
  border-bottom: 2px solid transparent;
  background: transparent;
  color: var(--muted);
  font-size: 14px;
  transition: color .2s, border-color .2s;
}
.project-filters button:hover { color: var(--cobalt); border-color: var(--line); }
.project-filters button[aria-pressed=true] { color: var(--cobalt); border-color: currentColor; font-weight: 700; }
.project-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--column-gap); }
.project-card { border-radius: 6px; border: 1px solid var(--line); overflow: hidden; transition: border-color .2s; }
.project-image { overflow: hidden; background: #313844; }
.project-image img { width: 100%; height: auto; aspect-ratio: 1.76; object-fit: cover; transition: transform .3s; }
.project-meta { padding: 15px clamp(12px, 1.4vw, 20px); }
.project-meta h3 { font-size: clamp(15px, 1.3vw, 20px); line-height: 1.4; }
.project-category { margin-top: 5px; color: var(--muted); font-size: 13px; }
.project-card:is(:hover, :focus-visible) { border-color: var(--cobalt); }
.project-card:is(:hover, :focus-visible) h3 { color: var(--cobalt); text-decoration: underline; text-underline-offset: 4px; }
.project-card:hover img { transform: scale(1.025); }

#services { padding-top: var(--section-gap); padding-bottom: var(--section-gap); }
.about-section { display: grid; grid-template-columns: 1.03fr .97fr; gap: clamp(24px, 4.5vw, 72px); align-items: center; }
.office-figure { position: relative; overflow: hidden; border-radius: 6px; background: var(--soft); }
.office-figure img { width: 100%; height: auto; aspect-ratio: 1.24; object-fit: cover; }
.office-figure figcaption { position: absolute; right: 10px; bottom: 10px; display: flex; align-items: center; gap: 12px; padding: 8px 11px; border-radius: 5px; background: var(--cobalt-dark); color: #fff; font-size: 12px; }
.office-figure figcaption span { color: #dedede; font: 10px var(--mono); }
.about-copy h2 { margin-top: 10px; }
.about-copy > p:not(.eyebrow) { margin-top: 17px; color: var(--muted); line-height: 1.9; }
.about-fact { display: flex; align-items: center; gap: 20px; margin-block: 22px 9px; padding-block: 14px; border-block: 1px solid var(--line); }
.about-fact strong { flex: none; font: 500 clamp(42px, 5.5vw, 83px)/1 Arial, sans-serif; letter-spacing: -.08em; }
.about-fact strong span { margin-left: 10px; font: 600 14px var(--sans); letter-spacing: 0; }
.about-fact > span { font-size: 13px; }
.about-fact small { color: var(--muted); font: 10px var(--mono); }
.text-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: var(--cobalt);
  font-size: 14px;
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 5px;
  text-decoration-color: #7185ae;
}
.text-link:hover { text-decoration-color: currentColor; }

.proof-section { background: var(--cobalt-dark); color: #fff; padding-block: var(--section-space); }
.proof-section .section-heading > p { color: #dce6fc; }
.credential-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 12px; }
.credential-card { display: flex; align-items: center; gap: 12px; text-align: left; min-height: 76px; padding: 12px 16px; border-radius: 5px; color: #fff; background: #153777; border: 1px solid #3b5790; transition: background .2s; }
.credential-card:is(:hover, :focus-visible) { background: #214791; }
.credential-card img { width: 57px; height: 44px; object-fit: contain; }
.credential-card span { font-size: 14px; font-weight: 650; }
.partner-section { margin-top: 26px; border-block: 1px solid #486398; }
.partner-section h3 { min-height: 78px; display: flex; align-items: center; padding: 12px 3px; font-size: 21px; }
.partner-grid { display: grid; grid-template-columns: repeat(6, minmax(0,1fr)); gap: 5px; padding-bottom: 15px; }
.partner-grid > div { display: grid; place-items: center; min-height: 82px; padding: 10px; background: #fff; border-radius: 5px; }
.partner-grid img { width: 110px; height: 54px; object-fit: contain; }

.downloads-pane { background: var(--soft); padding: clamp(16px, 2.15vw, 30px); border-radius: 6px; }
#download-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: var(--section-gap); }
.download-item { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: center; min-height: 60px; gap: 10px; padding-block: 8px; border-top: 1px solid var(--line); font-size: 14px; }
.download-item strong, .download-item small { display: block; }
.download-item small { margin-top: 2px; color: var(--muted); font: 12px var(--mono); }
.download-action { color: var(--cobalt); font-weight: 700; text-decoration: underline; text-underline-offset: 4px; }
.download-item:is(:hover, :focus-visible) strong { color: var(--cobalt); }

.contact-banner { color: #fff; background: var(--cobalt); }
.contact-banner-content { min-height: clamp(172px, 16vw, 240px); display: flex; align-items: center; justify-content: space-between; gap: 18px; padding-block: 32px; }
.contact-banner h2 { margin-top: 10px; }
.contact-banner .eyebrow { color: #dce6fc; }
.footer-main { display: grid; grid-template-columns: 1fr 1.25fr .48fr; gap: var(--section-gap); padding-block: clamp(36px, 4.4vw, 62px) 32px; }
.footer h2 { margin-bottom: 12px; font-size: clamp(26px, 2.3vw, 34px); }
.footer-company { color: var(--muted); font-size: 14px; }
.footer address { display: grid; gap: 12px; align-content: center; font-style: normal; }
.footer address a { display: flex; gap: 11px; align-items: center; }
.footer address small { display: block; font-size: 11px; color: var(--muted); }
.footer address span { font-size: 14px; }
.footer-links { display: grid; align-content: center; gap: 5px; font-size: 13px; }
.footer-links p { margin-bottom: 4px; font-weight: 700; }
.footer a:hover { text-decoration: underline; text-underline-offset: 4px; }
.footer-base { display: flex; align-items: center; justify-content: space-between; gap: 15px; padding-block: 15px; border-top: 1px solid var(--line); color: var(--muted); font-size: 12px; }
.footer-base > span:last-child { display: flex; gap: 14px; }

.detail-dialog { width: min(790px, 90vw); max-height: 90vh; padding: 20px clamp(16px, 3vw, 34px) 24px; border: 1px solid var(--line); border-radius: 14px; background: #fff; color: var(--ink); }
.detail-dialog::backdrop { background: #111111be; }
.detail-top { display: flex; justify-content: space-between; align-items: center; gap: 8px; color: var(--muted); }
.detail-top .icon-button:hover { background: #eee; }
.detail-dialog h2 { margin: 6px 0 13px; font-size: clamp(27px, 3vw, 39px); }
.detail-dialog img { width: 100%; max-height: 57vh; object-fit: contain; background: var(--soft); border-radius: 5px; }
.detail-dialog p:not(.eyebrow) { margin-top: 13px; color: var(--muted); }
@media (max-width: 1120px) {
  .site-header nav { gap: clamp(12px, 2.9vw, 31px); }
}
@media (max-width: 930px) {
  .nav-shell { gap: 10px; }
  .brand { gap: 8px; }
  .site-header nav { gap: 15px; }
  .hero h1 { font-size: clamp(39px, 5.3vw, 49px); }
  .case-heading { flex-direction: column; align-items: start; gap: 9px; }
  .credential-card { padding-inline: 11px; gap: 9px; }
  .credential-card img { width: 43px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; }
}