:root {
  --navy: #073f75;
  --navy-deep: #042b51;
  --navy-soft: #e8f1f8;
  --teal: #0c6f76;
  --gold: #e2ad27;
  --gold-soft: #fff6d9;
  --ink: #172534;
  --muted: #607080;
  --line: #dbe4eb;
  --paper: #f5f8fa;
  --white: #ffffff;
  --shadow: 0 24px 70px rgba(4, 43, 81, 0.12);
  --radius: 22px;
  --container: min(1180px, calc(100% - 48px));
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; }
a { color: inherit; }
button { font: inherit; }
.container { width: var(--container); margin-inline: auto; }
.skip-link { position: fixed; left: 16px; top: -80px; z-index: 100; padding: 10px 16px; color: #fff; background: var(--navy); }
.skip-link:focus { top: 16px; }

.topbar { color: rgba(255,255,255,.78); background: var(--navy-deep); font-size: 13px; }
.topbar-inner { min-height: 36px; display: flex; justify-content: space-between; align-items: center; gap: 24px; }
.topbar a { color: #fff; text-decoration: none; }
.site-header { position: sticky; top: 0; z-index: 50; background: rgba(255,255,255,.96); border-bottom: 1px solid rgba(7,63,117,.1); backdrop-filter: blur(18px); }
.header-inner { min-height: 84px; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.brand { display: flex; align-items: center; gap: 13px; text-decoration: none; min-width: 300px; }
.brand img { width: 58px; height: 58px; border-radius: 15px; object-fit: cover; box-shadow: 0 7px 20px rgba(7,63,117,.12); }
.brand strong { display: block; color: var(--navy-deep); font-family: "Songti SC", "STSong", serif; font-size: 21px; letter-spacing: .06em; line-height: 1.25; }
.brand small { display: block; margin-top: 3px; color: var(--muted); font-size: 11px; letter-spacing: .08em; }
.site-nav { display: flex; align-items: center; gap: 4px; }
.site-nav a { position: relative; padding: 29px 13px 25px; color: #344454; font-weight: 600; font-size: 15px; text-decoration: none; }
.site-nav a::after { content: ""; position: absolute; left: 13px; right: 13px; bottom: 18px; height: 2px; background: var(--gold); transform: scaleX(0); transform-origin: center; transition: transform .25s ease; }
.site-nav a:hover, .site-nav a[aria-current="page"] { color: var(--navy); }
.site-nav a:hover::after, .site-nav a[aria-current="page"]::after { transform: scaleX(1); }
.menu-toggle { display: none; width: 46px; height: 46px; border: 1px solid var(--line); border-radius: 12px; background: #fff; color: var(--navy); cursor: pointer; }
.menu-toggle span { display: block; width: 20px; height: 2px; margin: 5px auto; background: currentColor; transition: .25s ease; }

.hero { position: relative; overflow: hidden; color: #fff; background: var(--navy-deep); min-height: 690px; display: grid; align-items: center; }
.hero::before { content: ""; position: absolute; inset: 0; opacity: .44; background-image: linear-gradient(rgba(255,255,255,.055) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.055) 1px, transparent 1px); background-size: 68px 68px; mask-image: linear-gradient(90deg,#000,transparent 80%); }
.hero::after { content: ""; position: absolute; width: 760px; height: 760px; right: -230px; top: -235px; border: 1px solid rgba(255,255,255,.13); border-radius: 50%; box-shadow: 0 0 0 110px rgba(255,255,255,.025), 0 0 0 220px rgba(255,255,255,.018); }
.hero-inner { position: relative; z-index: 2; display: grid; grid-template-columns: 1.12fr .88fr; align-items: center; gap: 80px; padding: 100px 0; }
.eyebrow { display: inline-flex; align-items: center; gap: 10px; color: var(--gold); font-size: 13px; font-weight: 800; letter-spacing: .18em; text-transform: uppercase; }
.eyebrow::before { content: ""; width: 32px; height: 2px; background: currentColor; }
.hero h1 { max-width: 760px; margin: 22px 0 24px; font-family: "Songti SC", "STSong", serif; font-size: clamp(48px, 5.4vw, 78px); line-height: 1.12; letter-spacing: .03em; font-weight: 700; }
.hero h1 em { color: var(--gold); font-style: normal; }
.hero-copy > p { max-width: 680px; margin: 0; color: rgba(255,255,255,.76); font-size: 18px; }
.hero-actions { display: flex; gap: 14px; margin-top: 38px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 50px; padding: 0 25px; border-radius: 8px; font-weight: 700; text-decoration: none; transition: transform .2s ease, box-shadow .2s ease, background .2s ease; }
.button:hover { transform: translateY(-2px); }
.button-primary { color: var(--navy-deep); background: var(--gold); box-shadow: 0 12px 28px rgba(226,173,39,.24); }
.button-outline { color: #fff; border: 1px solid rgba(255,255,255,.35); background: rgba(255,255,255,.04); }
.button-blue { color: #fff; background: var(--navy); }
.hero-card { position: relative; min-height: 450px; display: grid; place-items: center; }
.hero-orbit { position: absolute; width: 420px; height: 420px; border-radius: 50%; border: 1px solid rgba(255,255,255,.16); animation: rotate 28s linear infinite; }
.hero-orbit::before, .hero-orbit::after { content: ""; position: absolute; width: 12px; height: 12px; border-radius: 50%; background: var(--gold); box-shadow: 0 0 0 8px rgba(226,173,39,.14); }
.hero-orbit::before { top: 35px; right: 74px; }
.hero-orbit::after { bottom: 48px; left: 52px; }
.hero-panel { position: relative; z-index: 2; width: min(330px, 86%); padding: 36px; border: 1px solid rgba(255,255,255,.16); border-radius: 28px; background: rgba(255,255,255,.09); box-shadow: 0 30px 70px rgba(0,0,0,.2); backdrop-filter: blur(12px); }
.hero-panel img { width: 86px; height: 86px; border-radius: 22px; object-fit: cover; margin-bottom: 26px; }
.hero-panel strong { display: block; font-family: "Songti SC", "STSong", serif; font-size: 28px; line-height: 1.35; }
.hero-panel p { margin: 14px 0 0; color: rgba(255,255,255,.7); font-size: 14px; }
.hero-points { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; margin-top: 58px; background: rgba(255,255,255,.18); }
.hero-point { padding: 20px 18px; background: var(--navy-deep); }
.hero-point strong { display: block; color: #fff; font-size: 19px; }
.hero-point span { color: rgba(255,255,255,.55); font-size: 12px; }
@keyframes rotate { to { transform: rotate(360deg); } }

.section { padding: 100px 0; }
.section-soft { background: var(--paper); }
.section-dark { color: #fff; background: var(--navy-deep); }
.section-head { display: grid; grid-template-columns: .9fr 1.1fr; align-items: end; gap: 60px; margin-bottom: 48px; }
.section-head h2, .page-hero h1 { margin: 12px 0 0; color: var(--navy-deep); font-family: "Songti SC", "STSong", serif; font-size: clamp(34px, 4vw, 52px); line-height: 1.28; }
.section-head p { margin: 0; color: var(--muted); font-size: 16px; }
.section-dark .section-head h2 { color: #fff; }
.section-dark .section-head p { color: rgba(255,255,255,.65); }
.service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.service-card { position: relative; min-height: 260px; padding: 32px; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease; }
.service-card:hover { transform: translateY(-6px); border-color: rgba(7,63,117,.25); box-shadow: var(--shadow); }
.service-number { color: var(--gold); font-family: Georgia, serif; font-size: 15px; font-weight: 700; }
.service-card h3 { margin: 46px 0 14px; color: var(--navy-deep); font-family: "Songti SC", "STSong", serif; font-size: 24px; }
.service-card p { margin: 0; color: var(--muted); font-size: 14px; }
.service-card::after { content: ""; position: absolute; right: -30px; bottom: -50px; width: 130px; height: 130px; border: 1px solid var(--navy-soft); border-radius: 50%; }
.stats { display: grid; grid-template-columns: repeat(4, 1fr); border-block: 1px solid rgba(255,255,255,.15); }
.stat { padding: 38px 28px; border-right: 1px solid rgba(255,255,255,.15); }
.stat:last-child { border-right: 0; }
.stat strong { display: block; color: var(--gold); font-family: Georgia, serif; font-size: 36px; line-height: 1; }
.stat span { display: block; margin-top: 12px; color: rgba(255,255,255,.64); font-size: 14px; }
.split { display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: 70px; }
.content h2 { margin: 14px 0 24px; color: var(--navy-deep); font-family: "Songti SC", "STSong", serif; font-size: clamp(34px, 4vw, 52px); line-height: 1.28; }
.content p { color: var(--muted); }
.check-list { display: grid; gap: 13px; padding: 0; margin: 28px 0 0; list-style: none; }
.check-list li { display: flex; gap: 12px; align-items: flex-start; }
.check-list li::before { content: ""; flex: 0 0 8px; width: 8px; height: 8px; margin-top: 10px; border-radius: 50%; background: var(--gold); box-shadow: 0 0 0 5px var(--gold-soft); }
.image-stack { position: relative; min-height: 500px; }
.image-stack img { position: absolute; object-fit: cover; border-radius: 24px; box-shadow: var(--shadow); }
.image-stack img:first-child { inset: 0 80px 55px 0; width: calc(100% - 80px); height: calc(100% - 55px); }
.image-stack img:last-child { right: 0; bottom: 0; width: 48%; height: 52%; border: 8px solid #fff; }
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.case-card { padding: 30px; color: #fff; border: 1px solid rgba(255,255,255,.14); border-radius: var(--radius); background: rgba(255,255,255,.06); }
.case-status { display: inline-block; padding: 5px 10px; color: var(--gold); border: 1px solid rgba(226,173,39,.35); border-radius: 999px; font-size: 12px; }
.case-card h3 { margin: 28px 0 14px; font-family: "Songti SC", "STSong", serif; font-size: 24px; }
.case-card p { color: rgba(255,255,255,.62); font-size: 14px; }
.case-card a { display: inline-block; margin-top: 14px; color: #fff; font-weight: 700; text-decoration-color: var(--gold); text-underline-offset: 5px; }
.process { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; counter-reset: step; }
.process-card { position: relative; padding: 30px; border-top: 3px solid var(--navy); background: var(--paper); counter-increment: step; }
.process-card::before { content: "0" counter(step); color: var(--gold); font-family: Georgia, serif; font-size: 18px; font-weight: 700; }
.process-card h3 { margin: 40px 0 10px; color: var(--navy-deep); }
.process-card p { margin: 0; color: var(--muted); font-size: 14px; }
.cta { padding: 0 0 100px; }
.cta-inner { position: relative; overflow: hidden; display: flex; align-items: center; justify-content: space-between; gap: 40px; padding: 55px 60px; color: #fff; border-radius: 28px; background: linear-gradient(125deg,var(--navy),var(--teal)); box-shadow: var(--shadow); }
.cta-inner::after { content: ""; position: absolute; width: 280px; height: 280px; right: -80px; top: -110px; border: 1px solid rgba(255,255,255,.18); border-radius: 50%; }
.cta h2 { position: relative; z-index: 2; margin: 0 0 8px; font-family: "Songti SC", "STSong", serif; font-size: 32px; }
.cta p { position: relative; z-index: 2; margin: 0; color: rgba(255,255,255,.72); }
.cta .button { position: relative; z-index: 2; flex: 0 0 auto; }

.page-hero { position: relative; overflow: hidden; padding: 100px 0 86px; background: linear-gradient(135deg,#edf4f9,#fff 60%); border-bottom: 1px solid var(--line); }
.page-hero::after { content: ""; position: absolute; width: 440px; height: 440px; right: -160px; top: -240px; border: 90px solid rgba(7,63,117,.035); border-radius: 50%; }
.breadcrumb { color: var(--muted); font-size: 13px; }
.breadcrumb a { color: var(--navy); text-decoration: none; }
.page-hero p { max-width: 720px; margin: 20px 0 0; color: var(--muted); font-size: 17px; }
.value-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 20px; }
.value-card { padding: 34px; border-radius: var(--radius); background: var(--paper); }
.value-card span { color: var(--gold); font-family: Georgia,serif; font-size: 30px; }
.value-card h3 { color: var(--navy-deep); font-family: "Songti SC", "STSong", serif; font-size: 24px; }
.value-card p { color: var(--muted); font-size: 14px; }
.gallery { display: grid; grid-template-columns: 1.25fr .75fr .75fr; grid-template-rows: repeat(2,240px); gap: 16px; }
.gallery figure { margin: 0; overflow: hidden; border-radius: 18px; background: var(--paper); }
.gallery figure:first-child { grid-row: 1 / 3; }
.gallery img { width: 100%; height: 100%; object-fit: cover; transition: transform .45s ease; }
.gallery figure:hover img { transform: scale(1.035); }
.detail-grid { display: grid; grid-template-columns: .85fr 1.15fr; gap: 60px; }
.side-nav { position: sticky; top: 120px; align-self: start; padding: 28px; border-radius: var(--radius); background: var(--paper); }
.side-nav strong { display: block; color: var(--navy-deep); font-family: "Songti SC", "STSong", serif; font-size: 22px; }
.side-nav a { display: block; padding: 12px 0; color: var(--muted); border-bottom: 1px solid var(--line); text-decoration: none; }
.side-nav a:hover { color: var(--navy); }
.detail-list { display: grid; gap: 22px; }
.detail-item { padding: 34px; border: 1px solid var(--line); border-radius: var(--radius); }
.detail-item h2 { margin: 0 0 14px; color: var(--navy-deep); font-family: "Songti SC", "STSong", serif; font-size: 28px; }
.detail-item p { color: var(--muted); }
.tag-list { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.tag { padding: 6px 11px; color: var(--navy); border-radius: 999px; background: var(--navy-soft); font-size: 12px; }
.case-detail { display: grid; gap: 24px; }
.case-detail article { display: grid; grid-template-columns: 220px 1fr; gap: 34px; padding: 38px; border: 1px solid var(--line); border-radius: var(--radius); }
.case-detail .case-kicker { color: var(--gold); font-weight: 800; }
.case-detail h2 { margin: 8px 0 12px; color: var(--navy-deep); font-family: "Songti SC", "STSong", serif; font-size: 27px; }
.case-detail p { margin: 0 0 14px; color: var(--muted); }
.case-meta { padding: 20px; border-radius: 14px; background: var(--paper); }
.case-meta strong { display: block; color: var(--navy); }
.case-meta span { color: var(--muted); font-size: 13px; }
.audience-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 24px; }
.audience-card { padding: 42px; border-radius: var(--radius); }
.audience-card:first-child { color: #fff; background: var(--navy); }
.audience-card:last-child { background: var(--gold-soft); }
.audience-card h2 { margin-top: 0; font-family: "Songti SC", "STSong", serif; font-size: 30px; }
.audience-card ul { padding-left: 20px; }
.audience-card:first-child li { color: rgba(255,255,255,.74); }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; }
.contact-card { padding: 38px; border: 1px solid var(--line); border-radius: var(--radius); }
.contact-card.featured { color: #fff; border: 0; background: var(--navy-deep); }
.contact-card span { color: var(--gold); font-size: 13px; font-weight: 800; letter-spacing: .12em; }
.contact-card h2 { margin: 16px 0; font-family: "Songti SC", "STSong", serif; font-size: 30px; }
.contact-card p { color: var(--muted); }
.contact-card.featured p { color: rgba(255,255,255,.68); }
.domain-link { display: inline-block; margin-top: 18px; color: var(--navy); font-family: Georgia,serif; font-size: 22px; font-weight: 700; }
.featured .domain-link { color: #fff; }

.site-footer { color: rgba(255,255,255,.66); background: #031f3a; }
.footer-main { display: grid; grid-template-columns: 1.4fr .8fr .8fr; gap: 60px; padding: 64px 0 42px; }
.footer-brand { display: flex; align-items: center; gap: 14px; color: #fff; }
.footer-brand img { width: 60px; height: 60px; border-radius: 16px; object-fit: cover; }
.footer-brand strong { display: block; font-family: "Songti SC", "STSong", serif; font-size: 20px; }
.footer-brand small { color: rgba(255,255,255,.5); }
.footer-copy { max-width: 470px; font-size: 14px; }
.footer-column strong { display: block; margin-bottom: 14px; color: #fff; }
.footer-column a { display: block; padding: 4px 0; color: rgba(255,255,255,.62); text-decoration: none; font-size: 14px; }
.footer-column a:hover { color: var(--gold); }
.footer-bottom { display: flex; justify-content: space-between; gap: 24px; padding: 20px 0 26px; border-top: 1px solid rgba(255,255,255,.1); font-size: 13px; }
.footer-bottom a { color: rgba(255,255,255,.72); text-decoration: none; }
.footer-bottom a:hover { color: #fff; text-decoration: underline; }
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s ease, transform .7s ease; }
.reveal.is-visible { opacity: 1; transform: none; }

@media (max-width: 980px) {
  :root { --container: min(100% - 36px, 760px); }
  .topbar { display: none; }
  .header-inner { min-height: 72px; }
  .brand { min-width: 0; }
  .brand img { width: 48px; height: 48px; }
  .brand strong { font-size: 17px; }
  .brand small { display: none; }
  .menu-toggle { display: block; }
  .site-nav { position: absolute; left: 0; right: 0; top: 72px; display: none; padding: 10px 18px 20px; background: #fff; border-bottom: 1px solid var(--line); box-shadow: 0 18px 30px rgba(4,43,81,.1); }
  .site-nav.is-open { display: grid; }
  .site-nav a { padding: 12px 10px; border-bottom: 1px solid var(--line); }
  .site-nav a::after { display: none; }
  .hero { min-height: auto; }
  .hero-inner { grid-template-columns: 1fr; gap: 40px; padding: 76px 0; }
  .hero-card { min-height: 390px; }
  .hero-orbit { width: 360px; height: 360px; }
  .section { padding: 78px 0; }
  .section-head, .split, .detail-grid { grid-template-columns: 1fr; gap: 32px; }
  .service-grid, .case-grid { grid-template-columns: repeat(2,1fr); }
  .stats { grid-template-columns: repeat(2,1fr); }
  .stat:nth-child(2) { border-right: 0; }
  .stat:nth-child(-n+2) { border-bottom: 1px solid rgba(255,255,255,.15); }
  .process { grid-template-columns: repeat(2,1fr); }
  .side-nav { position: static; }
  .case-detail article { grid-template-columns: 1fr; }
  .footer-main { grid-template-columns: 1fr 1fr; }
  .footer-main > div:first-child { grid-column: 1 / -1; }
}

@media (max-width: 640px) {
  :root { --container: calc(100% - 28px); --radius: 18px; }
  .brand strong { max-width: 210px; font-size: 15px; }
  .hero h1 { font-size: clamp(38px, 12vw, 52px); word-break: keep-all; }
  .hero-copy > p { font-size: 16px; }
  .hero-actions { flex-direction: column; }
  .button { width: 100%; }
  .hero-card { min-height: 330px; }
  .hero-orbit { width: 300px; height: 300px; }
  .hero-panel { padding: 28px; }
  .hero-points { margin-top: 34px; }
  .hero-point { padding: 15px 8px; }
  .hero-point strong { font-size: 15px; }
  .section { padding: 64px 0; }
  .section-head { margin-bottom: 34px; }
  .service-grid, .case-grid, .value-grid, .process, .audience-grid, .contact-grid { grid-template-columns: 1fr; }
  .service-card { min-height: auto; }
  .service-card h3 { margin-top: 28px; }
  .image-stack { min-height: 400px; }
  .image-stack img:first-child { right: 38px; }
  .image-stack img:last-child { width: 56%; }
  .gallery { grid-template-columns: 1fr 1fr; grid-template-rows: 300px 190px 190px; }
  .gallery figure:first-child { grid-column: 1 / -1; grid-row: auto; }
  .gallery figure:last-child { grid-column: 1 / -1; }
  .cta { padding-bottom: 64px; }
  .cta-inner { padding: 38px 28px; flex-direction: column; align-items: flex-start; }
  .cta .button { width: 100%; }
  .page-hero { padding: 70px 0 62px; }
  .footer-main { grid-template-columns: 1fr; gap: 32px; }
  .footer-main > div:first-child { grid-column: auto; }
  .footer-bottom { flex-direction: column; }
}

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