@font-face {
  font-family: "Dispatch Display";
  src: url("assets/fonts/huifeng-dispatch-display.woff2") format("woff2");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

:root {
  --ink: #111011;
  --dark: #181818;
  --paper: #eae6e0;
  --paper-bright: #f5f2ec;
  --steel: #9b9b96;
  --line-dark: rgba(234, 230, 224, 0.22);
  --line-light: rgba(17, 16, 17, 0.22);
  --orange: #df510f;
  --orange-dark: #b63c08;
  --yellow: #f0c541;
  --focus: #ffcf40;
  --header-h: 76px;
  --rail-progress: 12%;
  --rail-scale: .12;
  color-scheme: light;
  font-family: "Noto Sans SC", "Microsoft YaHei", "PingFang SC", sans-serif;
  color: var(--ink);
  background: var(--paper);
  scroll-behavior: smooth;
}

* { box-sizing: border-box; }
html { scroll-padding-top: calc(var(--header-h) + 18px); }
body { margin: 0; min-width: 320px; background: var(--paper); }
body.menu-open { overflow: hidden; }
img { display: block; width: 100%; height: 100%; object-fit: cover; }
a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: 0.24em; }
button, input, textarea, select { font: inherit; }
button, a, input, textarea, select { -webkit-tap-highlight-color: transparent; }
::selection { color: var(--paper-bright); background: var(--orange-dark); }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 4px; }

.skip-link { position: fixed; left: 16px; top: 10px; z-index: 100; padding: 12px 16px; background: var(--yellow); color: var(--ink); transform: translateY(-180%); transition: transform 180ms ease-out; }
.skip-link:focus { transform: translateY(0); }

.site-header { position: sticky; top: 0; z-index: 50; height: var(--header-h); padding: 0 clamp(20px, 3.2vw, 56px); display: flex; align-items: center; justify-content: space-between; color: var(--paper-bright); background: rgba(17, 16, 17, 0.96); border-bottom: 1px solid rgba(255,255,255,.12); }
.brand { display: inline-flex; align-items: center; gap: 12px; min-height: 48px; text-decoration: none; }
.brand-mark { width: 42px; height: 42px; fill: none; stroke: var(--orange); stroke-width: 2.4; }
.brand-mark circle { fill: var(--orange); stroke: none; }
.brand span { display: grid; line-height: 1.15; }
.brand strong { font-size: 17px; letter-spacing: -.01em; }
.brand small { margin-top: 4px; color: #b9b8b4; font-size: 11px; letter-spacing: .13em; }
.site-nav { display: flex; align-items: center; gap: clamp(22px, 3vw, 48px); }
.site-nav a { position: relative; display: grid; place-items: center; min-height: 46px; color: #d8d6d1; font-size: 14px; text-decoration: none; }
.site-nav a::after { content: ""; position: absolute; left: 0; right: 100%; bottom: 6px; height: 2px; background: var(--orange); transition: right 220ms cubic-bezier(.16, 1, .3, 1); }
.site-nav a:hover::after, .site-nav a:focus-visible::after { right: 0; }
.menu-toggle { display: none; width: 48px; height: 48px; border: 1px solid rgba(255,255,255,.3); background: transparent; color: #fff; }
.menu-label { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
.menu-lines { display: grid; gap: 7px; }
.menu-lines i { display: block; width: 22px; height: 2px; margin: auto; background: currentColor; transition: transform 180ms ease-out; }
.menu-toggle[aria-expanded="true"] .menu-lines i:first-child { transform: translateY(4.5px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] .menu-lines i:last-child { transform: translateY(-4.5px) rotate(-45deg); }

.hero { min-height: calc(100svh - var(--header-h)); display: grid; grid-template-columns: minmax(360px, 38%) minmax(0, 62%); border-bottom: 1px solid var(--line-light); }
.hero-copy { position: relative; min-height: 720px; padding: clamp(68px, 7vw, 112px) clamp(32px, 5vw, 84px) 42px; display: flex; flex-direction: column; align-items: flex-start; background: var(--paper); overflow: hidden; }
.hero-copy::after { content: ""; position: absolute; left: -12%; right: -16%; bottom: 36px; height: 116px; opacity: .2; background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='900' height='120' viewBox='0 0 900 120'%3E%3Cg fill='none' stroke='%23111011' stroke-width='1'%3E%3Cpath d='M0 86h900M35 86V54h72l36-28h245l35 36h109l28-21h180l32 45'/%3E%3Cpath d='M18 96h846M80 96v14m98-14v14m98-14v14m98-14v14m98-14v14m98-14v14m98-14v14'/%3E%3C/g%3E%3C/svg%3E") center/auto 100% no-repeat; }
.coordinate { position: absolute; top: 24px; left: clamp(32px, 5vw, 84px); right: 28px; display: flex; align-items: center; gap: 12px; color: #77746e; font: 600 12px/1 "Dispatch Display", sans-serif; letter-spacing: .08em; }
.coordinate span { width: 10px; height: 10px; border: 1px solid var(--ink); border-radius: 50%; box-shadow: 16px 0 0 -4px var(--orange); }
.coordinate::after { content: ""; height: 1px; flex: 1; background: var(--line-light); }
h1, h2, h3, p { margin-top: 0; }
.hero h1 { margin: 0 0 28px; max-width: 650px; font-size: clamp(58px, 5.8vw, 98px); font-weight: 900; line-height: .94; letter-spacing: -.035em; text-wrap: balance; }
.hero h1 em { display: block; color: var(--orange-dark); font-size: .78em; font-style: normal; white-space: nowrap; }
.hero-copy > p:not(.hero-boundary) { max-width: 36rem; margin-bottom: 30px; font-size: 17px; line-height: 1.82; color: #47443f; }
.primary-action { position: relative; z-index: 2; display: inline-flex; align-items: center; justify-content: space-between; gap: 30px; min-width: 210px; min-height: 54px; padding: 0 22px; color: white; background: var(--orange-dark); font-weight: 700; text-decoration: none; box-shadow: 0 14px 30px rgba(114, 35, 3, .18); transition: background 180ms ease-out, transform 180ms ease-out; }
.primary-action:hover { background: #8f2d06; transform: translateY(-2px); }
.hero-boundary { position: relative; z-index: 2; max-width: 34rem; margin: auto 0 0; padding-top: 20px; border-top: 1px solid var(--line-light); color: #66625d; font-size: 12px; line-height: 1.65; }

.dispatch { position: relative; min-width: 0; min-height: 720px; padding: 46px clamp(28px, 4vw, 64px) 36px; color: var(--paper-bright); background: var(--dark); overflow: hidden; }
.dispatch-head { display: flex; align-items: baseline; gap: 14px; padding-bottom: 20px; border-bottom: 1px solid var(--line-dark); }
.dispatch-head h2 { margin: 0; font-size: 20px; font-weight: 700; }
.dispatch-head span { color: #96948f; font: 600 12px/1 "Dispatch Display", sans-serif; letter-spacing: .08em; }
.stations { position: relative; z-index: 3; display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; margin: 54px 0 20px; padding: 0; list-style: none; }
.stations a { display: grid; min-height: 74px; align-content: start; gap: 8px; color: #f5f2ec; text-decoration: none; }
.stations b { color: #aaa8a3; font: 700 28px/1 "Dispatch Display", sans-serif; }
.stations span { font-size: 18px; font-weight: 700; }
.track { position: relative; z-index: 2; height: 14px; margin: 0 3% 0 1%; border-block: 1px solid #6e6b65; background: repeating-linear-gradient(90deg, transparent 0 26px, rgba(234,230,224,.18) 26px 28px); }
.track::before, .track::after { content: ""; position: absolute; top: 5px; width: 100%; height: 2px; background: #aaa6a0; }
.track-fill { position: absolute; z-index: 2; top: 5px; left: 0; width: 100%; height: 2px; background: var(--orange); transform: scaleX(var(--rail-scale)); transform-origin: left center; transition: transform 120ms linear; }
.locator { position: absolute; z-index: 3; left: var(--rail-progress); top: 50%; width: 18px; height: 18px; border: 5px solid var(--orange); border-radius: 50%; background: var(--dark); transform: translate(-50%, -50%); transition: left 120ms linear; box-shadow: 0 0 0 5px rgba(223,81,15,.18); }
.hero-media { position: absolute; left: 0; right: 0; bottom: 0; height: 55%; margin: 0; border-top: 1px solid var(--line-dark); overflow: hidden; }
.hero-media::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(24,24,24,.02) 48%, rgba(24,24,24,.86) 100%); pointer-events: none; }
.hero-media img { filter: saturate(.78) contrast(1.06); }
.hero-media figcaption { position: absolute; z-index: 2; left: clamp(28px, 4vw, 64px); bottom: 22px; max-width: 38rem; color: #dedbd4; font-size: 13px; line-height: 1.55; }

.manufacturing { background: var(--dark); color: var(--paper-bright); }
.section-intro { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(320px, .75fr); gap: 8vw; padding: clamp(78px, 9vw, 136px) clamp(24px, 6vw, 96px) clamp(54px, 6vw, 84px); }
.section-intro h2 { margin: 0; max-width: 780px; font-size: clamp(42px, 5vw, 78px); line-height: 1.02; letter-spacing: -.035em; }
.section-intro p { align-self: end; max-width: 43rem; margin: 0; color: #56524d; font-size: 16px; line-height: 1.8; }
.dark-intro { border-bottom: 1px solid var(--line-dark); }
.dark-intro p { color: #c6c3bc; }

.process-ledger { border-bottom: 1px solid var(--line-dark); }
.process-row { min-height: 520px; display: grid; grid-template-columns: 120px minmax(260px, .75fr) minmax(420px, 1.45fr); border-bottom: 1px solid var(--line-dark); }
.process-row:last-child { border-bottom: 0; }
.process-row.reverse { grid-template-columns: 120px minmax(420px, 1.45fr) minmax(260px, .75fr); }
.process-index { padding: 34px 18px; border-right: 1px solid var(--line-dark); display: flex; flex-direction: column; align-items: center; gap: 10px; color: #a6a39d; }
.process-index b { color: var(--orange); font: 700 42px/1 "Dispatch Display", sans-serif; }
.process-index span { writing-mode: vertical-rl; font: 700 11px/1 "Dispatch Display", sans-serif; letter-spacing: .18em; }
.process-copy { padding: clamp(42px, 6vw, 86px); display: flex; flex-direction: column; justify-content: center; }
.process-copy h3 { margin-bottom: 24px; font-size: clamp(34px, 4vw, 62px); line-height: 1; letter-spacing: -.025em; }
.process-copy p { max-width: 34rem; margin-bottom: 48px; color: #c8c5be; font-size: 16px; line-height: 1.85; }
.process-copy dl { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1px; margin: 0; background: var(--line-dark); border-block: 1px solid var(--line-dark); }
.process-copy dl div { padding: 18px 0; background: var(--dark); }
.process-copy dt { margin-bottom: 6px; color: #8e8b85; font-size: 11px; letter-spacing: .14em; }
.process-copy dd { margin: 0; font-size: 15px; font-weight: 700; }
.process-media { min-height: 520px; margin: 0; overflow: hidden; }
.process-media img { transition: transform 700ms cubic-bezier(.16, 1, .3, 1), filter 700ms ease-out; filter: saturate(.68); }
.process-row:hover .process-media img { transform: scale(1.018); filter: saturate(.86); }
.process-row.reverse .process-index { grid-column: 1; }
.process-row.reverse .process-media { grid-column: 2; grid-row: 1; }
.process-row.reverse .process-copy { grid-column: 3; grid-row: 1; }

.development { background: var(--paper); }
.development-grid { display: grid; grid-template-columns: minmax(360px, .9fr) minmax(520px, 1.1fr); min-height: 660px; border-top: 1px solid var(--line-light); border-bottom: 1px solid var(--line-light); }
.diagnosis-media { position: relative; min-height: 660px; margin: 0; overflow: hidden; }
.diagnosis-media::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 62%, rgba(17,16,17,.82)); }
.diagnosis-media figcaption { position: absolute; z-index: 2; left: 28px; right: 28px; bottom: 24px; color: #f5f2ec; font-size: 12px; line-height: 1.5; }
.milestones { margin: 0; padding: 0; list-style: none; }
.milestones li { position: relative; display: grid; grid-template-columns: 142px 1fr; min-height: 220px; padding: 44px clamp(28px, 4vw, 64px); border-bottom: 1px solid var(--line-light); }
.milestones li:last-child { border-bottom: 0; }
.milestones li::before { content: ""; position: absolute; left: 139px; top: 0; bottom: 0; width: 1px; background: var(--line-light); }
.milestones time { font: 700 19px/1 "Dispatch Display", sans-serif; letter-spacing: .04em; }
.milestones li > div { padding-left: 34px; }
.milestones h3 { margin-bottom: 12px; font-size: 25px; }
.milestones p { max-width: 42rem; margin: 0; color: #56524d; line-height: 1.75; }
.milestones .highlight { background: var(--yellow); }
.milestones .highlight::before { background: rgba(17,16,17,.35); }

.contact { display: grid; grid-template-columns: minmax(440px, 1fr) minmax(500px, .95fr); background: var(--paper-bright); }
.contact-visual { position: relative; min-height: 760px; overflow: hidden; }
.contact-visual::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(245,242,236,.08) 36%, rgba(17,16,17,.78)); }
.contact-title-wrap { position: absolute; z-index: 2; left: clamp(26px, 5vw, 72px); right: clamp(26px, 5vw, 72px); bottom: 54px; color: var(--paper-bright); }
.contact-title-wrap h2 { margin-bottom: 20px; max-width: 720px; font-size: clamp(44px, 5vw, 76px); line-height: 1.02; letter-spacing: -.035em; }
.contact-title-wrap p { max-width: 42rem; margin: 0; color: #dedbd4; line-height: 1.75; }
.inquiry-form { align-self: center; padding: clamp(48px, 7vw, 112px); }
.field-row { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
.inquiry-form label { display: grid; gap: 10px; margin-bottom: 26px; color: #383530; font-size: 13px; font-weight: 700; }
.inquiry-form input, .inquiry-form textarea, .inquiry-form select { width: 100%; min-height: 52px; padding: 13px 0; border: 0; border-bottom: 1px solid #8a867f; border-radius: 0; color: var(--ink); background: transparent; }
.inquiry-form textarea { resize: vertical; }
.inquiry-form input:hover, .inquiry-form textarea:hover, .inquiry-form select:hover { border-bottom-color: var(--ink); }
.inquiry-form input:focus, .inquiry-form textarea:focus, .inquiry-form select:focus { border-bottom-color: var(--orange-dark); }
.form-footer { display: grid; gap: 18px; margin-top: 18px; }
.form-footer button { display: inline-flex; align-items: center; justify-content: space-between; gap: 28px; min-height: 56px; padding: 0 22px; border: 0; color: white; background: var(--ink); font-weight: 700; cursor: pointer; transition: background 180ms ease-out, transform 180ms ease-out; }
.form-footer button:hover { background: var(--orange-dark); transform: translateY(-2px); }
.form-status { min-height: 48px; margin: 0; color: #6d2709; font-size: 14px; line-height: 1.6; }
.form-status.is-visible { padding: 13px 16px; border: 1px solid rgba(182,60,8,.42); background: #fff4ec; }

.site-footer { min-height: 250px; display: grid; grid-template-columns: 1.1fr .6fr 1fr; grid-template-rows: auto auto; align-items: start; gap: 28px 6vw; padding: 58px clamp(24px, 6vw, 96px) 36px; color: #d8d5ce; background: var(--ink); }
.footer-brand { min-height: 44px; display: inline-flex; align-items: flex-start; color: #fff; font-size: 22px; font-weight: 800; text-decoration: none; }
.site-footer p { margin: 0; color: #a6a39d; font-size: 13px; }
.site-footer nav { display: flex; justify-content: flex-end; gap: 28px; }
.site-footer nav a { min-height: 44px; display: inline-flex; align-items: flex-start; text-decoration: none; }
.site-footer nav a:hover { color: var(--orange); }
.creative-disclosure, .mark-note { align-self: end; }
.mark-note { grid-column: 2 / -1; justify-self: end; max-width: 560px; text-align: right; }

@media (max-width: 1060px) {
  :root { --header-h: 70px; }
  .hero { grid-template-columns: 1fr; }
  .hero-copy { min-height: 620px; }
  .dispatch { min-height: 680px; }
  .process-row, .process-row.reverse { grid-template-columns: 92px 1fr 1.18fr; }
  .process-copy { padding: 40px; }
  .development-grid, .contact { grid-template-columns: 1fr; }
  .diagnosis-media, .contact-visual { min-height: 560px; }
  .inquiry-form { max-width: 860px; width: 100%; justify-self: center; }
}

@media (max-width: 760px) {
  .site-header { padding-inline: 18px; }
  .brand-mark { width: 36px; height: 36px; }
  .brand strong { font-size: 15px; }
  .menu-toggle { display: grid; place-items: center; }
  .site-nav { position: fixed; inset: var(--header-h) 0 auto; display: grid; gap: 0; padding: 14px 18px 28px; color: white; background: var(--ink); border-top: 1px solid rgba(255,255,255,.15); transform: translateY(-120%); opacity: 0; visibility: hidden; transition: transform 240ms cubic-bezier(.16,1,.3,1), opacity 180ms ease-out, visibility 0s 240ms; }
  .site-nav.is-open { transform: translateY(0); opacity: 1; visibility: visible; transition-delay: 0s; }
  .site-nav a { justify-content: start; min-height: 54px; border-bottom: 1px solid rgba(255,255,255,.12); }
  .hero-copy { min-height: 610px; padding: 84px 24px 32px; }
  .coordinate { left: 24px; }
  .hero h1 { font-size: clamp(50px, 15vw, 72px); }
  .hero-copy > p:not(.hero-boundary) { font-size: 15px; }
  .dispatch { min-height: 760px; padding: 34px 24px 24px; }
  .stations { grid-template-columns: 1fr; gap: 16px; margin: 28px 0 18px; padding-left: 34px; }
  .stations::before { content: ""; position: absolute; left: 9px; top: 8px; bottom: 8px; width: 2px; background: linear-gradient(var(--orange) var(--rail-progress), #5b5955 var(--rail-progress)); }
  .stations li { position: relative; }
  .stations li::before { content: ""; position: absolute; left: -31px; top: 8px; width: 10px; height: 10px; border: 3px solid var(--orange); border-radius: 50%; background: var(--dark); }
  .stations a { min-height: 52px; grid-template-columns: 42px 1fr; align-items: center; gap: 4px; }
  .stations b { font-size: 22px; }
  .stations span { font-size: 17px; }
  .track { display: none; }
  .hero-media { height: 38%; }
  .section-intro { grid-template-columns: 1fr; gap: 26px; padding: 72px 24px 48px; }
  .section-intro h2 { font-size: clamp(40px, 11vw, 56px); }
  .process-row, .process-row.reverse { min-height: 0; grid-template-columns: 70px 1fr; }
  .process-index { grid-column: 1 !important; grid-row: 1 / span 2 !important; padding: 26px 10px; }
  .process-index b { font-size: 34px; }
  .process-copy, .process-row.reverse .process-copy { grid-column: 2; grid-row: 1; padding: 44px 24px; }
  .process-media, .process-row.reverse .process-media { grid-column: 2; grid-row: 2; min-height: 330px; }
  .process-copy p { margin-bottom: 30px; font-size: 15px; }
  .development-grid { grid-template-columns: 1fr; }
  .diagnosis-media { min-height: 420px; }
  .milestones li { grid-template-columns: 104px 1fr; min-height: 0; padding: 34px 24px; }
  .milestones li::before { left: 103px; }
  .milestones li > div { padding-left: 22px; }
  .milestones h3 { font-size: 21px; }
  .contact-visual { min-height: 580px; }
  .contact-title-wrap { left: 24px; right: 24px; bottom: 32px; }
  .inquiry-form { padding: 58px 24px; }
  .field-row { grid-template-columns: 1fr; gap: 0; }
  .site-footer { grid-template-columns: 1fr; grid-template-rows: auto; gap: 18px; padding: 48px 24px 30px; }
  .site-footer nav { justify-content: flex-start; flex-wrap: wrap; gap: 12px 24px; }
  .mark-note { grid-column: 1; justify-self: start; text-align: left; }
}

@media (max-width: 410px) {
  .brand small { display: none; }
  .dispatch { min-height: 720px; }
  .process-media, .process-row.reverse .process-media { min-height: 260px; }
  .milestones li { grid-template-columns: 86px 1fr; padding-inline: 18px; }
  .milestones li::before { left: 85px; }
  .milestones time { font-size: 16px; }
}

@media (prefers-reduced-motion: reduce) {
  :root { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .track-fill { transform: scaleX(.5); }
  .locator { left: 50%; }
}