:root {
  --steel: #f4f7f8;
  --white: #ffffff;
  --graphite: #161d22;
  --muted: #53616b;
  --blue: #003f79;
  --blue-deep: #052b4a;
  --cyan: #00a9cf;
  --orange: #cc3f0b;
  --rule: rgba(22,29,34,.25);
  --journey: 0%;
  --header: 72px;
}
@font-face {
  font-family: "Sidel Path Display";
  src: url("assets/fonts/sidel-path-display.woff2") format("woff2");
  font-style: normal;
  font-weight: 700 900;
  font-display: swap;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: var(--header); }
body { margin: 0; overflow-x: hidden; background: var(--steel); color: var(--graphite); font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif; line-height: 1.68; }
body::before { content: ""; position: fixed; inset: var(--header) auto 0 0; width: 4px; height: var(--journey); z-index: 60; background: var(--cyan); pointer-events: none; }
figure, h1, h2, h3, p { margin: 0; }
img { display: block; width: 100%; height: 100%; object-fit: cover; }
a { color: inherit; }
button, input, textarea { font: inherit; }
.skip-link { position: fixed; left: 16px; top: 10px; z-index: 100; padding: 10px 15px; background: var(--graphite); color: white; transform: translateY(-160%); }
.skip-link:focus { transform: none; }
:focus-visible { outline: 3px solid #f06a2f; outline-offset: 4px; }
.site-header { position: sticky; top: 0; z-index: 50; height: var(--header); display: flex; justify-content: space-between; align-items: stretch; background: rgba(255,255,255,.96); border-bottom: 1px solid var(--graphite); transition: transform .25s ease; }
.site-header.header-hidden { transform: translateY(-100%); }
.brand { min-width: 360px; display: flex; align-items: center; gap: 13px; padding: 8px 26px; border-right: 1px solid var(--rule); text-decoration: none; }
.brand-mark { width: 42px; height: 42px; flex: none; }
.brand-mark path { fill: none; stroke: var(--blue); stroke-width: 2.6; }
.brand-mark circle { fill: var(--orange); }
.brand strong { display: block; font-size: 16px; letter-spacing: .08em; }
.brand small { display: block; color: var(--muted); font: 10px/1.4 Consolas, monospace; letter-spacing: .1em; }
.site-nav { display: flex; align-items: stretch; }
.site-nav a { min-width: 124px; display: grid; place-items: center; position: relative; padding: 0 22px; border-left: 1px solid var(--rule); text-decoration: none; font-size: 13px; font-weight: 700; }
.site-nav a::after { content: ""; position: absolute; inset: auto 100% -1px 0; height: 4px; background: var(--orange); transition: right .22s ease; }
.site-nav a:hover::after, .site-nav a[aria-current="location"]::after { right: 0; }
.menu-toggle { display: none; }
.hero { min-height: calc(100vh - var(--header)); position: relative; overflow: hidden; background: var(--white); border-bottom: 2px solid var(--graphite); }
.hero::before { content: ""; position: absolute; inset: 0; z-index: 2; background: linear-gradient(90deg, rgba(255,255,255,.98) 0%, rgba(255,255,255,.9) 29%, rgba(255,255,255,.36) 52%, rgba(255,255,255,0) 76%); pointer-events: none; }
.hero-copy { min-height: calc(100vh - var(--header)); display: flex; flex-direction: column; justify-content: center; position: relative; z-index: 6; width: min(52%, 820px); padding: clamp(48px,6vw,94px) clamp(30px,5.8vw,92px) 224px; }
.hero h1, .path-intro h2, .context h2, .records h2, .contact h2 { font-family: "Sidel Path Display", "Microsoft YaHei", sans-serif; font-size: clamp(46px,5.2vw,82px); line-height: 1.03; letter-spacing: -.035em; font-weight: 900; }
.hero h1 { max-width: 9.2em; }
.hero-lead { max-width: 31em; margin-top: 28px; padding-top: 18px; border-top: 2px solid var(--orange); color: var(--graphite); }
.primary-action { min-height: 56px; align-self: flex-start; display: inline-flex; align-items: center; gap: 24px; margin-top: 34px; padding: 0 0 0 20px; background: var(--blue); color: white; text-decoration: none; font-weight: 700; }
.primary-action b { align-self: stretch; min-width: 54px; display: grid; place-items: center; background: var(--orange); font: 700 14px Consolas, monospace; }
.hero-media { position: absolute; inset: 0; min-width: 0; overflow: hidden; }
.hero-media img { object-position: 54% center; }
.hero-media figcaption { position: absolute; right: 24px; top: 24px; z-index: 1; max-width: 300px; padding: 10px 14px; background: rgba(5,43,74,.9); color: white; font-size: 12px; }
.starwheel-line { position: absolute; width: min(76vw,1080px); left: calc(50% - min(38vw,540px)); bottom: -760px; z-index: 3; opacity: .56; transform: rotate(var(--wheel-turn, 0deg)); pointer-events: none; }
.starwheel-line circle, .starwheel-line path { fill: none; stroke: var(--cyan); stroke-width: 1.5; vector-effect: non-scaling-stroke; }
.stage-arc { position: absolute; inset: auto 0 0; z-index: 7; height: 184px; display: grid; grid-template-columns: repeat(5, 1fr); align-items: start; padding: 0 3vw; background: rgba(255,255,255,.92); border-top: 1px solid var(--graphite); }
.stage-arc svg { position: absolute; inset: 8px 0 0; width: 100%; height: 154px; pointer-events: none; }
.stage-arc svg path { fill: none; stroke: var(--blue); stroke-width: 1.5; vector-effect: non-scaling-stroke; }
.stage-arc a { min-height: 68px; display: flex; align-items: center; justify-content: center; gap: 13px; position: relative; padding: 12px 9px; background: var(--white); border: 1px solid var(--graphite); text-decoration: none; }
.stage-arc a::before { content: ""; position: absolute; left: 50%; top: -8px; width: 12px; height: 12px; border-radius: 50%; background: var(--orange); transform: translateX(-50%); }
.stage-arc a:nth-of-type(1), .stage-arc a:nth-of-type(5) { margin-top: 104px; }
.stage-arc a:nth-of-type(2), .stage-arc a:nth-of-type(4) { margin-top: 50px; }
.stage-arc a:nth-of-type(3) { margin-top: 24px; }
.stage-arc b { color: var(--orange); font: 700 14px Consolas, monospace; }
.stage-arc span { font-size: 14px; font-weight: 700; }
.path-intro { display: grid; grid-template-columns: 5fr 3fr; gap: 60px; align-items: end; padding: clamp(70px,9vw,132px) clamp(26px,6vw,96px) clamp(48px,6vw,84px); border-bottom: 1px solid var(--graphite); }
.path-intro h2, .context h2, .records h2, .contact h2 { margin-top: 20px; }
.path-intro > p { max-width: 34em; color: var(--muted); }
.process-flow { position: relative; background: var(--white); }
.flow-marker { position: absolute; left: calc(50% - 6px); top: 24px; z-index: 4; width: 12px; height: 12px; border: 2px solid white; border-radius: 50%; background: var(--orange); box-shadow: 0 0 0 2px var(--blue); transform: translateY(var(--marker-y, 0px)); pointer-events: none; }
.process-step { min-height: 580px; display: grid; grid-template-columns: 58% 42%; border-bottom: 1px solid var(--graphite); }
.process-step.reverse { grid-template-columns: 42% 58%; }
.process-step.reverse figure { order: 2; border-left: 1px solid var(--graphite); }
.process-step.reverse > div { order: 1; }
.process-step figure { min-width: 0; overflow: hidden; border-right: 1px solid var(--graphite); }
.process-step > div { display: flex; flex-direction: column; justify-content: center; padding: clamp(44px,7vw,102px); position: relative; }
.process-step > div::before { content: ""; position: absolute; left: 0; top: 50%; width: 44px; height: 2px; background: var(--orange); }
.process-step.reverse > div::before { left: auto; right: 0; }
.process-step span { color: var(--blue); font: 700 12px Consolas, monospace; letter-spacing: .12em; }
.process-step h3 { margin-top: 22px; font-family: "Sidel Path Display", "Microsoft YaHei", sans-serif; font-size: clamp(36px,4.3vw,66px); line-height: 1.02; letter-spacing: -.035em; font-weight: 900; }
.process-step p { max-width: 31em; margin-top: 24px; color: var(--muted); }
.context { display: grid; grid-template-columns: 43% 57%; background: var(--blue-deep); color: white; border-bottom: 2px solid var(--graphite); }
.context-title { padding: clamp(64px,8vw,116px) clamp(30px,6vw,94px); border-right: 1px solid rgba(255,255,255,.34); }
.scope-lines > div { min-height: 260px; display: grid; grid-template-columns: 112px 1fr; column-gap: 24px; align-content: center; padding: 34px clamp(28px,5vw,72px); border-bottom: 1px solid rgba(255,255,255,.34); }
.scope-lines > div:last-child { border-bottom: 0; }
.scope-lines span { color: #ff8a55; font-size: 12px; font-weight: 700; }
.scope-lines h3 { font-size: clamp(24px,2.6vw,40px); line-height: 1.16; }
.scope-lines p { grid-column: 2; margin-top: 12px; color: rgba(255,255,255,.76); }
.records { min-height: 800px; display: grid; grid-template-columns: 46% 54%; background: var(--graphite); color: white; border-bottom: 2px solid var(--graphite); }
.records-media { min-width: 0; border-right: 1px solid rgba(255,255,255,.34); }
.records-copy { padding: clamp(60px,8vw,116px); }
.timeline { list-style: none; margin: 54px 0 0; padding: 0; border-top: 1px solid rgba(255,255,255,.35); }
.timeline li { display: grid; grid-template-columns: 78px 1fr; gap: 24px; padding: 24px 0; border-bottom: 1px solid rgba(255,255,255,.35); }
.timeline time { color: #ff8a55; font: 700 16px Consolas, monospace; }
.timeline h3 { font-size: 19px; }
.timeline p { margin-top: 6px; color: rgba(255,255,255,.7); font-size: 14px; }
.contact { display: grid; grid-template-columns: 56% 44%; background: var(--white); border-bottom: 2px solid var(--graphite); }
.contact-copy { padding: clamp(58px,8vw,112px); }
.contact-media { min-width: 0; border-left: 1px solid var(--graphite); overflow: hidden; }
.input-list { display: grid; grid-template-columns: 1fr 1fr; gap: 0; margin: 42px 0 0; padding: 0; list-style: none; border-top: 1px solid var(--graphite); }
.input-list li { min-height: 58px; display: flex; align-items: center; gap: 18px; border-bottom: 1px solid var(--graphite); }
.input-list li:nth-child(odd) { border-right: 1px solid var(--graphite); }
.input-list b { color: var(--orange); font: 700 13px Consolas, monospace; }
.inquiry-form { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; margin-top: 42px; }
.inquiry-form label { display: grid; gap: 6px; color: var(--muted); font-size: 13px; font-weight: 700; }
.inquiry-form .wide, .inquiry-form button, .form-status, .form-noscript { grid-column: 1 / -1; }
.inquiry-form input, .inquiry-form textarea { min-width: 0; width: 100%; min-height: 48px; padding: 11px 0; border: 0; border-bottom: 1px solid var(--graphite); border-radius: 0; background: transparent; color: var(--graphite); }
.inquiry-form textarea { min-height: 96px; resize: vertical; }
.inquiry-form button { min-height: 54px; border: 0; background: var(--orange); color: white; font-weight: 800; cursor: pointer; }
.inquiry-form button:hover { background: #aa370c; }
.form-status, .form-noscript { min-height: 28px; color: #9e3008; font-weight: 700; }
.site-footer { min-height: 116px; display: grid; grid-template-columns: 1fr auto auto; gap: 42px; align-items: center; padding: 24px clamp(24px,5vw,80px); background: var(--blue-deep); color: white; }
.footer-brand { display: flex; align-items: center; gap: 12px; font-weight: 800; }
.footer-brand .brand-mark path { stroke: white; }
.site-footer p { color: rgba(255,255,255,.7); font-size: 12px; }
.site-footer a { min-height: 44px; display: inline-flex; align-items: center; border-bottom: 1px solid #ff8a55; text-decoration: none; }
@media (max-width: 1080px) {
  .brand { min-width: 310px; padding-inline: 18px; }
  .site-nav a { min-width: auto; padding-inline: 17px; }
  .path-intro { grid-template-columns: 1fr 1fr; }
  .process-step, .process-step.reverse { grid-template-columns: 52% 48%; }
}
@media (max-width: 860px) {
  :root { --header: 68px; }
  .site-header { height: var(--header); }
  .brand { min-width: 0; border-right: 0; padding-left: 16px; }
  .brand-mark { width: 38px; height: 38px; }
  .brand small { display: none; }
  .menu-toggle { display: flex; align-items: center; gap: 12px; min-width: 88px; min-height: 48px; margin: 10px 12px; padding: 0 12px; z-index: 52; background: transparent; border: 1px solid var(--graphite); cursor: pointer; }
  .menu-toggle i, .menu-toggle i::before { display: block; width: 18px; height: 2px; background: currentColor; content: ""; transition: transform .2s ease; }
  .menu-toggle i::before { transform: translateY(6px); }
  .menu-toggle[aria-expanded="true"] { color: white; border-color: white; }
  .menu-toggle[aria-expanded="true"] i { transform: rotate(45deg); }
  .menu-toggle[aria-expanded="true"] i::before { transform: rotate(90deg); }
  .site-nav { position: fixed; inset: 0; display: none; align-content: center; padding: 94px 24px 38px; background: var(--blue-deep); color: white; }
  .site-nav.open { display: grid; }
  .site-nav a { min-height: 68px; display: flex; justify-content: space-between; padding: 0; border: 0; border-bottom: 1px solid rgba(255,255,255,.4); font-size: 24px; }
  .site-nav a::after { display: none; }
  body.menu-open { overflow: hidden; }
  html:not(.js) .site-header { position: static; height: auto; display: block; }
  html:not(.js) .brand { min-height: 68px; }
  html:not(.js) .menu-toggle { display: none; }
  html:not(.js) .site-nav { position: static; display: grid; padding: 0 18px 18px; }
  html:not(.js) .site-nav a { min-height: 56px; font-size: 18px; }
  .hero { min-height: auto; display: grid; }
  .hero::before { display: none; }
  .hero-copy { min-height: 570px; width: 100%; padding: 72px 28px 58px; background: var(--white); }
  .hero h1 { font-size: clamp(50px,10vw,76px); }
  .hero-media { position: relative; inset: auto; height: min(82vw,630px); border-top: 1px solid var(--graphite); }
  .hero-media figcaption { top: auto; right: 18px; bottom: 18px; }
  .starwheel-line { display: none; }
  .stage-arc { position: relative; inset: auto; height: auto; grid-template-columns: 1fr 1fr; padding: 0; background: var(--blue-deep); color: white; border-top: 1px solid var(--graphite); }
  .stage-arc svg { display: none; }
  .stage-arc a, .stage-arc a:nth-of-type(1), .stage-arc a:nth-of-type(2), .stage-arc a:nth-of-type(3), .stage-arc a:nth-of-type(4), .stage-arc a:nth-of-type(5) { min-height: 78px; margin-top: 0; background: transparent; border: 0; border-right: 1px solid rgba(255,255,255,.34); border-bottom: 1px solid rgba(255,255,255,.34); }
  .stage-arc a:nth-of-type(2n) { border-right: 0; }
  .stage-arc a:nth-of-type(5) { grid-column: 1 / -1; border-right: 0; }
  .stage-arc a::before { display: none; }
  .path-intro { grid-template-columns: 1fr; gap: 28px; }
  .process-step, .process-step.reverse { min-height: auto; grid-template-columns: 1fr; }
  .flow-marker { left: 18px; }
  .process-step figure, .process-step.reverse figure { order: 1; height: min(72vw,580px); border: 0; border-bottom: 1px solid var(--graphite); }
  .process-step > div, .process-step.reverse > div { order: 2; min-height: 420px; }
  .context { grid-template-columns: 1fr; }
  .context-title { border-right: 0; border-bottom: 1px solid rgba(255,255,255,.34); }
  .records { grid-template-columns: 1fr; }
  .records-media { height: 560px; border-right: 0; border-bottom: 1px solid rgba(255,255,255,.34); }
  .contact { grid-template-columns: 1fr; }
  .contact-copy { order: 2; }
  .contact-media { order: 1; height: 520px; border-left: 0; border-bottom: 1px solid var(--graphite); }
  .site-footer { grid-template-columns: 1fr auto; }
  .site-footer p { grid-column: 1 / -1; grid-row: 2; }
}
@media (max-width: 540px) {
  .brand strong { font-size: 14px; }
  .hero-copy { min-height: 550px; padding: 58px 22px 50px; }
  .hero h1 { font-size: 50px; }
  .hero-media { height: 100vw; }
  .hero-media figcaption { right: 14px; left: 14px; bottom: 14px; max-width: none; }
  .stage-arc { grid-template-columns: 1fr; }
  .stage-arc a, .stage-arc a:nth-of-type(5) { grid-column: auto; border-right: 0; }
  .path-intro, .context-title, .records-copy, .contact-copy { padding: 64px 22px 48px; }
  .path-intro h2, .context h2, .records h2, .contact h2 { font-size: 43px; }
  .process-step figure, .process-step.reverse figure { height: 84vw; }
  .process-step > div, .process-step.reverse > div { min-height: 360px; padding: 56px 22px; }
  .process-step h3 { font-size: 43px; }
  .scope-lines > div { min-height: 250px; grid-template-columns: 72px 1fr; padding: 30px 22px; }
  .records-media, .contact-media { height: 430px; }
  .timeline li { grid-template-columns: 62px 1fr; gap: 14px; }
  .input-list, .inquiry-form { grid-template-columns: 1fr; }
  .input-list li:nth-child(odd) { border-right: 0; }
  .inquiry-form .wide, .inquiry-form button, .form-status, .form-noscript { grid-column: auto; }
  .site-footer { grid-template-columns: 1fr; gap: 18px; }
  .site-footer p { grid-column: auto; grid-row: auto; }
  .site-footer a { justify-self: start; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
  .site-header { transform: none !important; }
  .starwheel-line { transform: none !important; }
  .flow-marker { transform: none !important; }
}
@media (forced-colors: active) {
  .brand-mark path, .starwheel-line circle, .starwheel-line path { stroke: CanvasText; }
  .primary-action, .inquiry-form button { border: 2px solid ButtonText; }
}