:root {
  --navy: #073c70;
  --navy-dark: #032747;
  --orange: #f57a1f;
  --orange-light: #ff9a4d;
  --ink: #142336;
  --muted: #657386;
  --paper: #f8f6f1;
  --line: #dfe4e8;
  --white: #ffffff;
  --shadow: 0 24px 60px rgba(3, 39, 71, 0.14);
  --serif: "Songti SC", "STSong", serif;
  --sans: "PingFang SC", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--white); font-family: var(--sans); line-height: 1.75; -webkit-font-smoothing: antialiased; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
.container { width: min(1180px, calc(100% - 48px)); margin-inline: auto; }
.skip-link { position: fixed; left: 16px; top: -64px; z-index: 100; padding: 10px 16px; color: white; background: var(--orange); }
.skip-link:focus { top: 16px; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }

.topbar { color: rgba(255,255,255,.78); background: var(--navy-dark); font-size: 12px; letter-spacing: .08em; }
.topbar-inner { height: 36px; display: flex; align-items: center; justify-content: space-between; }
.topbar a:hover { color: white; }
.site-header { position: sticky; top: 0; z-index: 50; background: rgba(255,255,255,.96); border-bottom: 1px solid rgba(7,60,112,.1); backdrop-filter: blur(14px); }
.header-inner { min-height: 84px; display: flex; align-items: center; justify-content: space-between; gap: 32px; }
.brand { display: inline-flex; align-items: center; gap: 14px; min-width: 260px; }
.brand img { width: 58px; height: 54px; object-fit: cover; object-position: 50% 33%; border-radius: 10px; }
.brand span { display: grid; line-height: 1.2; }
.brand strong { font-family: var(--serif); font-size: 23px; letter-spacing: .12em; }
.brand small { margin-top: 7px; color: var(--muted); font-size: 11px; letter-spacing: .08em; }
.site-nav { display: flex; align-items: center; gap: 28px; font-size: 15px; font-weight: 600; }
.site-nav a { position: relative; padding: 29px 0; }
.site-nav a::after { content: ""; position: absolute; left: 0; right: 100%; bottom: 21px; height: 2px; background: var(--orange); transition: right .25s ease; }
.site-nav a:hover::after, .site-nav a[aria-current="page"]::after { right: 0; }
.menu-toggle { display: none; width: 44px; height: 44px; padding: 10px; border: 0; background: transparent; }
.menu-toggle > span:not(.sr-only) { display: block; width: 24px; height: 2px; margin: 5px 0; background: var(--navy); transition: transform .2s ease, opacity .2s ease; }

.eyebrow { display: inline-block; color: var(--orange-light); font-size: 12px; font-weight: 700; letter-spacing: .17em; text-transform: uppercase; }
.eyebrow.dark { color: var(--orange); }
.eyebrow.light { color: #ffb47c; }
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { font-family: var(--serif); font-weight: 700; line-height: 1.25; }
h1 { margin-bottom: 26px; font-size: clamp(42px, 5.1vw, 76px); letter-spacing: -.02em; }
h2 { margin-bottom: 20px; font-size: clamp(30px, 3.2vw, 48px); }
h3 { font-size: 24px; }
.button { display: inline-flex; min-height: 52px; align-items: center; justify-content: center; padding: 0 28px; border: 1px solid transparent; font-weight: 700; letter-spacing: .04em; transition: transform .2s ease, box-shadow .2s ease, background .2s ease; }
.button:hover { transform: translateY(-2px); }
.button-primary { color: white; background: var(--orange); box-shadow: 0 14px 30px rgba(245,122,31,.25); }
.button-outline { color: white; border-color: rgba(255,255,255,.45); }
.button-outline:hover { background: rgba(255,255,255,.09); }
.button-white { color: var(--navy); background: white; }
.text-link { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; }
.text-link span { color: var(--orange); font-size: 24px; }

.home-hero { position: relative; min-height: 690px; display: grid; align-items: center; overflow: hidden; color: white; background: var(--navy); }
.home-hero::before { content: ""; position: absolute; inset: 0; background: radial-gradient(circle at 12% 15%, rgba(255,255,255,.1), transparent 32%), linear-gradient(120deg, var(--navy-dark), var(--navy) 60%, #0b4d87); }
.hero-lines { position: absolute; width: 440px; height: 440px; right: -120px; top: -100px; border: 1px solid rgba(255,255,255,.12); border-radius: 50%; box-shadow: 0 0 0 70px rgba(255,255,255,.035), 0 0 0 140px rgba(255,255,255,.025); }
.hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: 1.05fr .95fr; align-items: center; gap: 84px; padding-block: 86px; }
.hero-copy h1 { margin-top: 16px; }
.hero-copy h1 em { color: var(--orange-light); font-style: normal; }
.hero-copy > p { max-width: 650px; color: rgba(255,255,255,.78); font-size: 18px; }
.hero-actions { display: flex; align-items: center; gap: 30px; margin-top: 38px; }
.hero-tags { display: flex; gap: 10px; margin-top: 44px; }
.hero-tags span { padding: 6px 12px; border: 1px solid rgba(255,255,255,.18); color: rgba(255,255,255,.7); font-size: 12px; letter-spacing: .08em; }
.hero-visual { position: relative; min-height: 500px; }
.hero-visual > img { width: 100%; height: 500px; object-fit: cover; box-shadow: var(--shadow); }
.hero-visual::before { content: ""; position: absolute; inset: -18px 22px 18px -18px; border: 1px solid rgba(255,255,255,.25); z-index: -1; }
.hero-card { position: absolute; left: -56px; bottom: 28px; width: 300px; padding: 26px 28px; color: var(--ink); background: white; box-shadow: var(--shadow); }
.hero-card small { color: var(--orange); font-weight: 700; letter-spacing: .12em; }
.hero-card strong { display: block; margin: 8px 0; font-family: var(--serif); font-size: 25px; }
.hero-card p { margin: 0; color: var(--muted); font-size: 14px; }
.hero-index { position: absolute; right: -22px; top: 12px; color: rgba(255,255,255,.35); font-family: var(--serif); font-size: 64px; }

.section { padding-block: 104px; }
.section-soft { background: var(--paper); }
.section-blue { color: white; background: var(--navy); }
.section-no { color: var(--orange); font-family: var(--serif); font-size: 30px; }
.split-heading { display: grid; grid-template-columns: 70px 1.15fr .85fr; gap: 38px; align-items: start; }
.split-heading p { margin-top: 35px; color: var(--muted); font-size: 17px; }
.stat-row { display: grid; grid-template-columns: repeat(4, 1fr); margin-top: 70px; border-block: 1px solid var(--line); }
.stat-row div { padding: 32px 20px; border-right: 1px solid var(--line); }
.stat-row div:last-child { border-right: 0; }
.stat-row strong { display: block; color: var(--navy); font-family: var(--serif); font-size: 38px; }
.stat-row span { color: var(--muted); font-size: 13px; }
.section-head { display: flex; align-items: end; justify-content: space-between; gap: 48px; margin-bottom: 54px; }
.section-head h2 { margin: 10px 0 0; }
.section-head > p { max-width: 480px; color: var(--muted); }
.section-blue .section-head > p { color: rgba(255,255,255,.72); }
.service-grid { display: grid; grid-template-columns: repeat(4, 1fr); border: 1px solid rgba(255,255,255,.18); }
.service-tile { min-height: 280px; padding: 34px 28px; border-right: 1px solid rgba(255,255,255,.18); transition: background .25s ease, transform .25s ease; }
.service-tile:last-child { border-right: 0; }
.service-tile:hover { background: rgba(255,255,255,.08); transform: translateY(-4px); }
.service-tile > span { color: var(--orange-light); font-family: var(--serif); font-size: 18px; }
.service-tile h3 { margin: 54px 0 15px; }
.service-tile p { color: rgba(255,255,255,.7); font-size: 14px; }
.editorial-grid { display: grid; grid-template-columns: 1.2fr .8fr; gap: 30px; }
.feature-case { position: relative; min-height: 480px; overflow: hidden; color: white; padding: 42px; display: flex; flex-direction: column; justify-content: end; }
.feature-case img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; z-index: -2; transition: transform .6s ease; }
.feature-case::after { content: ""; position: absolute; inset: 0; z-index: -1; background: linear-gradient(0deg, rgba(3,39,71,.94), rgba(3,39,71,.05) 70%); }
.feature-case:hover img { transform: scale(1.035); }
.feature-case > span, .mini-cases span { color: var(--orange-light); font-size: 12px; font-weight: 700; letter-spacing: .12em; }
.feature-case h3 { max-width: 500px; margin: 10px 0; font-size: 33px; }
.feature-case p { max-width: 620px; margin: 0; color: rgba(255,255,255,.76); }
.mini-cases { display: grid; gap: 30px; }
.mini-cases article { padding: 38px; background: var(--paper); border-top: 4px solid var(--orange); }
.mini-cases h3 { margin: 16px 0 12px; }
.mini-cases p { margin: 0; color: var(--muted); }
.closing-cta { padding-top: 0; }
.cta-panel { min-height: 300px; padding: 58px 64px; display: flex; align-items: center; justify-content: space-between; gap: 36px; color: white; background: linear-gradient(120deg, var(--navy-dark), var(--navy)); position: relative; overflow: hidden; }
.cta-panel::after { content: ""; position: absolute; width: 250px; height: 250px; right: 18%; border: 55px solid rgba(255,255,255,.04); border-radius: 50%; }
.cta-panel h2 { position: relative; z-index: 1; margin: 10px 0 0; }
.cta-panel .button { position: relative; z-index: 1; }

.page-hero { padding-block: 92px; color: white; background: linear-gradient(120deg, var(--navy-dark), var(--navy)); overflow: hidden; }
.page-hero-grid { display: grid; grid-template-columns: 1fr .78fr; gap: 90px; align-items: center; }
.page-hero h1 { margin: 12px 0 20px; }
.page-hero p { max-width: 680px; color: rgba(255,255,255,.75); font-size: 17px; }
.page-hero img { width: 100%; height: 390px; object-fit: cover; box-shadow: var(--shadow); }
.page-hero.compact { min-height: 430px; display: grid; align-items: center; background: linear-gradient(135deg, var(--navy-dark), var(--navy) 66%, #14629d); }
.page-hero.compact h1 { max-width: 800px; }
.narrative-grid { display: grid; grid-template-columns: 80px 1fr; gap: 44px; }
.narrative-grid > div { max-width: 850px; }
.narrative-grid p { color: var(--muted); font-size: 17px; }
.value-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.value-grid article { min-height: 260px; padding: 36px; background: white; border-bottom: 4px solid var(--navy); }
.value-grid article > span { color: var(--orange); font-weight: 700; letter-spacing: .14em; }
.value-grid h3 { margin: 48px 0 12px; }
.value-grid p { color: var(--muted); }
.image-story { display: grid; grid-template-columns: .95fr 1.05fr; gap: 76px; align-items: center; }
.image-story > img { width: 100%; height: 480px; object-fit: cover; }
.line-list { list-style: none; margin: 34px 0 0; padding: 0; }
.line-list li { display: grid; grid-template-columns: 130px 1fr; gap: 20px; padding: 18px 0; border-top: 1px solid var(--line); }
.line-list li:last-child { border-bottom: 1px solid var(--line); }
.line-list span { color: var(--muted); }
.vision-band { color: white; background: var(--orange); }
.vision-band h2 { max-width: 980px; margin: 12px 0 0; }

.service-list { border-top: 1px solid var(--line); }
.service-row { display: grid; grid-template-columns: 90px 1fr 260px; gap: 34px; align-items: start; padding: 44px 0; border-bottom: 1px solid var(--line); }
.service-number { color: var(--orange); font-family: var(--serif); font-size: 28px; }
.service-row h2 { margin-bottom: 12px; font-size: 32px; }
.service-row p { max-width: 680px; margin: 0; color: var(--muted); }
.service-row small { padding-top: 12px; color: var(--navy); font-weight: 700; text-align: right; }
.scope-note { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: end; }
.scope-note h2 { margin: 10px 0 0; }
.scope-note > p { color: var(--muted); }

.cases-hero { background: linear-gradient(135deg, var(--navy-dark), var(--navy) 60%, #11578f); }
.case-stack { border-top: 1px solid var(--line); }
.case-item { display: grid; grid-template-columns: 220px 1fr; gap: 70px; padding: 58px 0; border-bottom: 1px solid var(--line); }
.case-label span { display: block; color: var(--orange); font-family: var(--serif); font-size: 48px; line-height: 1; }
.case-label small { display: block; margin-top: 18px; color: var(--navy); font-weight: 700; letter-spacing: .12em; }
.case-item h2 { margin-bottom: 16px; font-size: 36px; }
.case-item p { color: var(--muted); }
.case-item ul { display: flex; flex-wrap: wrap; gap: 10px; margin: 24px 0 0; padding: 0; list-style: none; }
.case-item li { padding: 6px 14px; color: var(--navy); background: #eef4f8; font-size: 13px; font-weight: 700; }
.photo-band { color: white; background: var(--navy-dark); }
.photo-band .container { display: grid; grid-template-columns: 1fr 1fr; gap: 78px; align-items: center; }
.photo-band img { width: 100%; height: 410px; object-fit: cover; }
.photo-band h2 { margin: 10px 0 34px; }

.process-grid { position: relative; }
.process-grid::before { content: ""; position: absolute; left: 43px; top: 60px; bottom: 60px; width: 1px; background: var(--line); }
.process-step { position: relative; display: grid; grid-template-columns: 88px 1fr; gap: 50px; padding: 30px 0 44px; }
.process-step > span { position: relative; z-index: 1; width: 88px; height: 88px; display: grid; place-items: center; color: white; background: var(--navy); border: 10px solid white; border-radius: 50%; font-family: var(--serif); font-size: 22px; }
.process-step small { color: var(--orange); font-weight: 700; letter-spacing: .14em; }
.process-step h2 { margin: 4px 0 8px; font-size: 34px; }
.process-step p { max-width: 680px; color: var(--muted); }
.dual-panel { display: grid; grid-template-columns: 1fr 1fr; }
.dual-panel > div { padding: 26px 60px 26px 0; }
.dual-panel > div + div { padding-left: 60px; border-left: 1px solid rgba(255,255,255,.22); }
.dual-panel h2 { margin: 10px 0; }
.dual-panel p { color: rgba(255,255,255,.72); }

.contact-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; }
.contact-primary { padding: 46px; color: white; background: var(--navy); }
.contact-primary h2 { margin: 12px 0 40px; font-size: 34px; }
.contact-primary dl { margin: 0; }
.contact-primary dl div { padding: 20px 0; border-top: 1px solid rgba(255,255,255,.2); }
.contact-primary dt { color: rgba(255,255,255,.62); font-size: 12px; letter-spacing: .12em; }
.contact-primary dd { margin: 6px 0 0; font-weight: 700; }
.contact-primary dd a { color: #ffb47c; }
.contact-topics h2 { margin: 10px 0 22px; }
.contact-note { display: grid; grid-template-columns: 1fr 1fr; gap: 70px; align-items: center; }
.contact-note span { color: var(--orange); font-size: 12px; font-weight: 700; letter-spacing: .12em; }
.contact-note h2 { margin: 10px 0 0; }
.contact-note p { color: var(--muted); }

.site-footer { color: rgba(255,255,255,.68); background: #021d35; }
.footer-grid { display: grid; grid-template-columns: 1.6fr .7fr 1fr; gap: 80px; padding-block: 64px; }
.footer-brand strong, .footer-links strong { display: block; margin-bottom: 18px; color: white; font-family: var(--serif); font-size: 19px; }
.footer-brand p { max-width: 520px; margin: 0; }
.footer-links { display: grid; align-content: start; gap: 9px; font-size: 13px; }
.footer-links a:hover { color: white; }
.footer-bottom { min-height: 68px; display: flex; align-items: center; justify-content: space-between; border-top: 1px solid rgba(255,255,255,.12); font-size: 12px; }
.footer-bottom a:hover { color: white; }

.reveal { opacity: 0; transform: translateY(22px); transition: opacity .65s ease, transform .65s ease; }
.reveal.is-visible { opacity: 1; transform: none; }

@media (max-width: 980px) {
  .container { width: min(100% - 36px, 760px); }
  .header-inner { min-height: 74px; }
  .menu-toggle { display: block; position: relative; z-index: 61; }
  .site-nav { position: fixed; left: 0; right: 0; top: 110px; z-index: 60; display: grid; gap: 0; padding: 12px 24px 24px; background: white; border-bottom: 1px solid var(--line); box-shadow: 0 18px 36px rgba(3,39,71,.13); opacity: 0; visibility: hidden; transform: translateY(-14px); transition: opacity .2s ease, transform .2s ease, visibility .2s; }
  .site-nav.is-open { opacity: 1; visibility: visible; transform: none; }
  .site-nav a { padding: 14px 4px; border-bottom: 1px solid var(--line); }
  .site-nav a::after { display: none; }
  .menu-toggle[aria-expanded="true"] > span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .menu-toggle[aria-expanded="true"] > span:nth-child(2) { opacity: 0; }
  .menu-toggle[aria-expanded="true"] > span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  .hero-grid, .page-hero-grid, .image-story, .editorial-grid, .photo-band .container, .contact-layout { grid-template-columns: 1fr; }
  .hero-grid { gap: 58px; padding-block: 70px; }
  .hero-visual { min-height: 430px; }
  .hero-visual > img { height: 430px; }
  .hero-card { left: 22px; }
  .split-heading { grid-template-columns: 60px 1fr; }
  .split-heading > p { grid-column: 2; margin-top: 0; }
  .stat-row, .service-grid { grid-template-columns: repeat(2, 1fr); }
  .service-tile:nth-child(2) { border-right: 0; }
  .service-tile:nth-child(-n+2) { border-bottom: 1px solid rgba(255,255,255,.18); }
  .section-head { align-items: start; }
  .page-hero-grid { gap: 40px; }
  .page-hero img { height: 360px; }
  .value-grid { grid-template-columns: 1fr; }
  .service-row { grid-template-columns: 70px 1fr; }
  .service-row small { grid-column: 2; padding-top: 0; text-align: left; }
  .scope-note, .contact-note { grid-template-columns: 1fr; gap: 24px; }
  .dual-panel { grid-template-columns: 1fr; }
  .dual-panel > div { padding: 18px 0 38px; }
  .dual-panel > div + div { padding: 38px 0 18px; border-left: 0; border-top: 1px solid rgba(255,255,255,.22); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 640px) {
  .container { width: min(100% - 28px, 520px); }
  .topbar { display: none; }
  .site-nav { top: 74px; }
  .brand { min-width: 0; }
  .brand img { width: 48px; height: 46px; }
  .brand strong { font-size: 20px; }
  .brand small { display: none; }
  h1 { font-size: clamp(38px, 12vw, 54px); word-break: keep-all; }
  h2 { font-size: 30px; }
  .section { padding-block: 72px; }
  .home-hero { min-height: auto; }
  .hero-grid { gap: 48px; padding-block: 58px 72px; }
  .hero-copy > p { font-size: 16px; }
  .hero-actions { flex-wrap: wrap; gap: 22px; }
  .hero-tags { flex-wrap: wrap; margin-top: 34px; }
  .hero-visual, .hero-visual > img { min-height: 0; height: 350px; }
  .hero-card { left: 12px; right: 12px; bottom: 12px; width: auto; padding: 20px; }
  .hero-index { right: 8px; top: -50px; }
  .split-heading { grid-template-columns: 1fr; gap: 12px; }
  .split-heading > p { grid-column: auto; }
  .stat-row { grid-template-columns: 1fr 1fr; }
  .stat-row div { padding: 24px 12px; border-bottom: 1px solid var(--line); }
  .stat-row div:nth-child(2) { border-right: 0; }
  .service-grid { grid-template-columns: 1fr; }
  .service-tile { min-height: 230px; border-right: 0; border-bottom: 1px solid rgba(255,255,255,.18); }
  .service-tile h3 { margin-top: 34px; }
  .section-head { display: grid; gap: 20px; margin-bottom: 38px; }
  .feature-case { min-height: 430px; padding: 28px; }
  .feature-case h3 { font-size: 28px; }
  .cta-panel { min-height: 360px; padding: 38px 28px; align-items: start; flex-direction: column; justify-content: center; }
  .page-hero { padding-block: 70px; }
  .page-hero.compact { min-height: 390px; }
  .page-hero img { height: 300px; }
  .narrative-grid { grid-template-columns: 1fr; gap: 12px; }
  .image-story { gap: 38px; }
  .image-story > img { height: 340px; }
  .line-list li { grid-template-columns: 1fr; gap: 4px; }
  .service-row { grid-template-columns: 52px 1fr; gap: 14px; padding: 34px 0; }
  .service-row h2 { font-size: 27px; }
  .case-item { grid-template-columns: 1fr; gap: 24px; padding: 42px 0; }
  .case-label { display: flex; align-items: end; gap: 18px; }
  .case-label small { margin-bottom: 4px; }
  .photo-band img { height: 300px; }
  .process-grid::before { left: 31px; }
  .process-step { grid-template-columns: 64px 1fr; gap: 20px; }
  .process-step > span { width: 64px; height: 64px; border-width: 8px; font-size: 18px; }
  .contact-primary { padding: 30px 24px; }
  .footer-grid { grid-template-columns: 1fr; gap: 34px; padding-block: 48px; }
  .footer-brand { grid-column: auto; }
  .footer-bottom { padding-block: 18px; gap: 8px; flex-direction: column; align-items: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
}