:root {
  --blue: #0756c9;
  --blue-deep: #07356f;
  --blue-ink: #0b2f5c;
  --blue-soft: #edf5ff;
  --cyan: #35b9db;
  --ink: #172230;
  --muted: #66758a;
  --line: #dfe6ee;
  --paper: #ffffff;
  --wash: #f5f8fb;
  --shell: min(1320px, calc(100vw - 80px));
  --radius: 16px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", Arial, sans-serif; -webkit-font-smoothing: antialiased; }
body.menu-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
img { display: block; width: 100%; }
figure, h1, h2, h3, p { margin: 0; }
button { font: inherit; }
.section-shell { width: var(--shell); margin-inline: auto; }
main section[id], footer[id] { scroll-margin-top: 108px; }

.site-header { position: sticky; top: 0; z-index: 100; height: 88px; background: rgba(255, 255, 255, .96); border-bottom: 1px solid transparent; transition: box-shadow .25s ease, border-color .25s ease; }
.site-header.is-scrolled { border-color: var(--line); box-shadow: 0 10px 30px rgba(18, 49, 85, .07); }
.header-inner { width: var(--shell); height: 100%; margin: auto; display: grid; grid-template-columns: 230px 1fr 160px; align-items: center; gap: 28px; }
.brand, .brand-crop { display: block; width: 196px; height: 48px; overflow: hidden; }
.brand-crop { position: relative; }
.brand-crop img { position: absolute; width: 290px; max-width: none; left: -65px; top: -87px; }
.desktop-nav { justify-self: center; display: flex; align-items: center; gap: clamp(26px, 3vw, 52px); font-size: 15px; font-weight: 600; }
.desktop-nav a { position: relative; padding: 33px 0; }
.desktop-nav a::after { content: ""; position: absolute; left: 50%; bottom: 22px; width: 0; height: 2px; background: var(--blue); transition: width .2s ease, left .2s ease; }
.desktop-nav a:hover::after, .desktop-nav a.is-active::after { left: 0; width: 100%; }
.header-action { justify-self: end; display: inline-flex; align-items: center; gap: 16px; color: var(--blue); font-size: 14px; font-weight: 700; }
.header-action span { display: grid; place-items: center; width: 30px; height: 30px; border: 1px solid #bfd3ed; border-radius: 50%; }
.menu-toggle, .mobile-menu { display: none; }

.hero { position: relative; height: min(720px, calc(100vh - 120px)); min-height: 620px; overflow: hidden; border-radius: 0 0 var(--radius) var(--radius); color: #fff; }
.hero-image, .hero-overlay { position: absolute; inset: 0; }
.hero-image { background: url("./assets/brand-building.jpg") 58% center / cover no-repeat; transform: scale(1.01); }
.hero-overlay { background: linear-gradient(90deg, rgba(4, 34, 78, .88) 0%, rgba(4, 42, 92, .67) 39%, rgba(4, 36, 78, .13) 72%), linear-gradient(0deg, rgba(3, 32, 65, .4), transparent 45%); }
.hero-content { position: relative; z-index: 1; height: 100%; max-width: 710px; padding: 0 0 74px 74px; display: flex; flex-direction: column; justify-content: center; }
.eyebrow { margin-bottom: 18px; color: var(--blue); font-size: 12px; line-height: 1.4; font-weight: 800; letter-spacing: .18em; }
.eyebrow--light { color: #bcdcff; }
.hero h1 { font-size: clamp(48px, 4.6vw, 68px); line-height: 1.17; letter-spacing: -.045em; font-weight: 650; }
.hero-copy { max-width: 610px; margin-top: 28px; color: rgba(255, 255, 255, .86); font-size: 17px; line-height: 1.9; }
.hero-link { align-self: flex-start; display: flex; align-items: center; gap: 30px; margin-top: 34px; padding: 14px 0; border-bottom: 1px solid rgba(255, 255, 255, .65); font-size: 14px; font-weight: 700; }
.hero-link span { font-size: 20px; transition: transform .2s ease; }
.hero-link:hover span { transform: translateX(5px); }
.hero-caption { position: absolute; z-index: 1; left: 74px; right: 38px; bottom: 26px; display: flex; justify-content: space-between; color: rgba(255, 255, 255, .63); font-size: 10px; letter-spacing: .16em; }

.proof-strip { display: grid; grid-template-columns: repeat(4, 1fr); padding: 56px 0 84px; }
.proof-item { min-height: 112px; display: flex; align-items: center; gap: 22px; padding: 0 30px; border-right: 1px solid var(--line); }
.proof-item:first-child { padding-left: 0; }
.proof-item:last-child { padding-right: 0; border-right: 0; }
.proof-item strong { white-space: nowrap; color: var(--blue-deep); font-family: Arial, sans-serif; font-size: 42px; line-height: 1; letter-spacing: -.04em; }
.proof-item strong em { margin-left: 5px; font-family: inherit; font-size: 13px; font-style: normal; font-weight: 700; letter-spacing: 0; }
.proof-item p { color: var(--muted); font-size: 13px; line-height: 1.7; }

.section-heading { margin-bottom: 52px; }
.section-heading h2 { font-size: clamp(36px, 4vw, 54px); line-height: 1.2; letter-spacing: -.035em; font-weight: 650; }
.section-heading--split { display: grid; grid-template-columns: 1fr minmax(320px, 500px); align-items: end; gap: 70px; }
.section-heading--split > p { padding-bottom: 5px; color: var(--muted); font-size: 16px; line-height: 1.9; }

.about { padding: 92px 0 120px; border-top: 1px solid var(--line); }
.about-layout { display: grid; grid-template-columns: .88fr 1.12fr; align-items: stretch; gap: 72px; }
.about-intro { padding: 24px 0 12px; }
.about-intro h3 { max-width: 500px; margin-bottom: 30px; color: var(--blue-ink); font-size: 28px; line-height: 1.5; font-weight: 650; }
.about-intro p { max-width: 565px; margin-top: 18px; color: var(--muted); font-size: 16px; line-height: 2; }
.about-image { min-height: 430px; overflow: hidden; border-radius: var(--radius); }
.about-image img { height: 100%; object-fit: cover; transition: transform .6s ease; }
.about-image:hover img { transform: scale(1.025); }
.history { position: relative; display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; margin-top: 72px; border-top: 1px solid var(--line); }
.history::before { content: ""; position: absolute; top: -2px; left: 0; width: 25%; height: 3px; background: var(--blue); }
.history-item { padding: 32px 34px 0 0; }
.history-item time { color: var(--blue); font: 700 13px/1 Arial, sans-serif; }
.history-item h3 { margin-top: 19px; font-size: 20px; }
.history-item p { margin-top: 13px; color: var(--muted); font-size: 14px; line-height: 1.8; }

.business { padding: 110px 0 120px; background: var(--wash); }
.business-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 26px; }
.business-card { overflow: hidden; background: var(--paper); border: 1px solid #e4eaf1; border-radius: var(--radius); transition: transform .25s ease, box-shadow .25s ease; }
.business-card:hover { transform: translateY(-5px); box-shadow: 0 24px 52px rgba(25, 63, 105, .11); }
.business-card figure { position: relative; height: 330px; overflow: hidden; background: #eaf1f9; }
.business-card figure::after { content: ""; position: absolute; inset: 0; box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .25); pointer-events: none; }
.business-card figure img { height: 100%; object-fit: cover; object-position: top center; transition: transform .5s ease; }
.business-card:hover figure img { transform: scale(1.02); }
.business-body { padding: 36px 38px 40px; }
.business-meta { display: flex; align-items: center; gap: 15px; color: var(--blue); }
.business-meta span { font: 700 16px/1 Arial, sans-serif; }
.business-meta small { font-size: 10px; font-weight: 800; letter-spacing: .13em; }
.business-body h3 { margin-top: 18px; color: var(--blue-ink); font-size: 27px; line-height: 1.35; }
.business-body > p { min-height: 62px; margin-top: 16px; color: var(--muted); font-size: 15px; line-height: 1.85; }
.business-body ul { display: flex; flex-wrap: wrap; gap: 9px; margin: 24px 0 0; padding: 0; list-style: none; }
.business-body li { padding: 8px 12px; color: #3c5877; background: var(--blue-soft); border-radius: 5px; font-size: 12px; }
.ecosystem { margin-top: 28px; padding: 48px 52px; display: grid; grid-template-columns: 1.25fr .75fr; align-items: end; gap: 60px; color: #fff; background: linear-gradient(120deg, #064392, #0875d1 72%, #31acd1); border-radius: var(--radius); }
.ecosystem h3 { font-size: clamp(24px, 2.5vw, 36px); line-height: 1.45; }
.ecosystem > p { color: rgba(255, 255, 255, .8); font-size: 14px; line-height: 1.9; }

.news { padding: 118px 0 120px; }
.news-grid { display: grid; grid-template-columns: 1.32fr .84fr .84fr; gap: 24px; }
.news-card { overflow: hidden; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); transition: border-color .2s ease, transform .2s ease; }
.news-card:hover { transform: translateY(-4px); border-color: #9ebee4; }
.news-card figure { height: 230px; overflow: hidden; background: #e8edf3; }
.news-card--feature figure { height: 310px; }
.news-card figure img { height: 100%; object-fit: cover; }
.news-card-body { padding: 28px 28px 32px; }
.news-meta { display: flex; justify-content: space-between; color: var(--blue); font-size: 11px; font-weight: 800; letter-spacing: .08em; }
.news-meta time { color: #8a98a9; font-weight: 600; letter-spacing: 0; }
.news-card h3 { margin-top: 16px; color: var(--blue-ink); font-size: 21px; line-height: 1.55; }
.news-card--feature h3 { font-size: 26px; }
.news-card p { margin-top: 13px; color: var(--muted); font-size: 14px; line-height: 1.8; }
.news-note { display: flex; align-items: center; justify-content: space-between; gap: 32px; margin-top: 30px; padding: 22px 26px; color: #53708f; background: var(--blue-soft); border-radius: 10px; font-size: 13px; }
.news-note span { color: var(--blue); font-size: 10px; font-weight: 800; letter-spacing: .15em; }

.careers { padding-bottom: 120px; }
.careers-panel { position: relative; overflow: hidden; display: grid; grid-template-columns: 1.1fr .9fr; gap: 70px; padding: 78px; color: #fff; background: linear-gradient(125deg, #082f65 0%, #075bb9 58%, #36b1d1 130%); border-radius: var(--radius); }
.careers-panel::after { content: ""; position: absolute; width: 480px; height: 480px; right: -170px; top: -230px; border: 1px solid rgba(255,255,255,.18); border-radius: 50%; box-shadow: 0 0 0 70px rgba(255,255,255,.025), 0 0 0 140px rgba(255,255,255,.02); }
.careers-copy { position: relative; z-index: 1; }
.careers-copy h2 { font-size: clamp(36px, 4vw, 54px); line-height: 1.35; letter-spacing: -.035em; }
.careers-copy > p { max-width: 560px; margin-top: 24px; color: rgba(255,255,255,.78); font-size: 15px; line-height: 1.9; }
.careers-copy > a { display: inline-flex; gap: 24px; margin-top: 30px; padding-bottom: 7px; border-bottom: 1px solid rgba(255,255,255,.55); font-size: 14px; font-weight: 700; }
.job-placeholder { position: relative; z-index: 1; align-self: stretch; padding: 36px; color: var(--ink); background: rgba(255,255,255,.95); border-radius: 12px; }
.job-placeholder > div:first-child { display: flex; justify-content: space-between; color: var(--blue); font-size: 10px; font-weight: 800; letter-spacing: .14em; }
.job-placeholder > div:first-child small { color: #8997a7; font-size: 11px; letter-spacing: 0; }
.job-placeholder h3 { margin-top: 64px; color: var(--blue-ink); font-size: 27px; }
.job-placeholder p { margin-top: 14px; color: var(--muted); font-size: 14px; line-height: 1.8; }
.job-tags { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 28px; }
.job-tags span { padding: 8px 11px; color: #4f6883; background: var(--blue-soft); border-radius: 4px; font-size: 12px; }

footer { padding: 72px 0 28px; color: #fff; background: #092c55; }
.footer-main { display: grid; grid-template-columns: 1.3fr .8fr .4fr; gap: 70px; align-items: start; padding-bottom: 60px; }
.footer-brand p { margin-top: 16px; color: rgba(255,255,255,.65); font-size: 13px; }
.footer-logo-crop { position: relative; display: block; width: 190px; height: 44px; overflow: hidden; }
.footer-logo-crop img { position: absolute; width: 290px; max-width: none; left: -61px; top: -86px; }
.footer-links { display: flex; gap: 80px; }
.footer-links div { display: flex; flex-direction: column; gap: 12px; }
.footer-links strong { margin-bottom: 5px; font-size: 13px; }
.footer-links a { color: rgba(255,255,255,.63); font-size: 12px; }
.footer-links a:hover { color: #fff; }
.back-top { justify-self: end; display: flex; align-items: center; gap: 16px; font-size: 12px; }
.back-top span { display: grid; place-items: center; width: 34px; height: 34px; border: 1px solid rgba(255,255,255,.3); border-radius: 50%; }
.footer-bottom { display: flex; gap: 36px; padding-top: 24px; border-top: 1px solid rgba(255,255,255,.13); color: rgba(255,255,255,.45); font-size: 11px; }
.footer-bottom a { margin-left: auto; }

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

@media (max-width: 1060px) {
  :root { --shell: min(100% - 48px, 1320px); }
  .header-inner { grid-template-columns: 210px 1fr 130px; }
  .desktop-nav { gap: 22px; }
  .hero-content { padding-left: 48px; }
  .hero-caption { left: 48px; }
  .proof-strip { grid-template-columns: repeat(2, 1fr); row-gap: 30px; }
  .proof-item:nth-child(2) { border-right: 0; }
  .proof-item:nth-child(3) { padding-left: 0; }
  .about-layout { gap: 42px; }
  .history { grid-template-columns: repeat(2, 1fr); row-gap: 34px; }
  .business-card figure { height: 280px; }
  .news-grid { grid-template-columns: repeat(2, 1fr); }
  .news-card--feature { grid-column: 1 / -1; display: grid; grid-template-columns: 1.05fr .95fr; }
  .news-card--feature figure { height: 100%; min-height: 330px; }
  .careers-panel { padding: 58px; gap: 42px; }
}

@media (max-width: 780px) {
  :root { --shell: calc(100vw - 36px); }
  .site-header { height: 72px; }
  .header-inner { grid-template-columns: 1fr auto; }
  .brand, .brand-crop { width: 168px; height: 42px; }
  .brand-crop img { width: 255px; left: -57px; top: -77px; }
  .desktop-nav, .header-action { display: none; }
  .menu-toggle { display: block; width: 42px; height: 42px; padding: 10px 6px; border: 0; background: transparent; }
  .menu-toggle span { display: block; height: 2px; margin: 7px 0; background: var(--blue-ink); transition: transform .25s ease; }
  .menu-toggle[aria-expanded="true"] span:first-child { transform: translateY(4.5px) rotate(45deg); }
  .menu-toggle[aria-expanded="true"] span:last-child { transform: translateY(-4.5px) rotate(-45deg); }
  .mobile-menu { position: fixed; inset: 72px 0 0; z-index: 99; display: flex; flex-direction: column; padding: 36px 24px; background: #fff; opacity: 0; visibility: hidden; transform: translateY(-10px); transition: opacity .2s ease, transform .2s ease, visibility .2s ease; }
  .mobile-menu.is-open { opacity: 1; visibility: visible; transform: none; }
  .mobile-menu a { display: flex; justify-content: space-between; padding: 22px 0; border-bottom: 1px solid var(--line); color: var(--blue-ink); font-size: 24px; }
  .mobile-menu span { color: #98a7b7; font: 600 11px/1 Arial, sans-serif; }
  .hero { width: 100%; height: 660px; min-height: 0; border-radius: 0; }
  .hero-image { background-position: 63% center; }
  .hero-overlay { background: linear-gradient(90deg, rgba(4,34,78,.88), rgba(4,42,92,.48) 75%), linear-gradient(0deg, rgba(3,32,65,.45), transparent 55%); }
  .hero-content { justify-content: flex-end; max-width: none; padding: 0 24px 92px; }
  .hero h1 { font-size: clamp(40px, 11vw, 54px); }
  .hero-copy { margin-top: 22px; font-size: 15px; line-height: 1.8; }
  .hero-caption { left: 24px; right: 24px; bottom: 24px; }
  .hero-caption span:last-child { display: none; }
  .proof-strip { grid-template-columns: repeat(2, 1fr); padding: 38px 0 70px; gap: 26px 0; }
  .proof-item { min-height: 100px; display: block; padding: 0 18px; }
  .proof-item strong { font-size: 34px; }
  .proof-item p { margin-top: 12px; }
  .proof-item:nth-child(3) { border-right: 1px solid var(--line); }
  .section-heading { margin-bottom: 36px; }
  .section-heading--split { display: block; }
  .section-heading--split > p { margin-top: 20px; }
  .about { padding: 72px 0 86px; }
  .about-layout { display: flex; flex-direction: column; gap: 38px; }
  .about-image { min-height: 310px; order: -1; }
  .about-intro { padding: 0; }
  .about-intro h3 { font-size: 24px; }
  .history { grid-template-columns: 1fr; margin-top: 52px; }
  .history::before { width: 45%; }
  .history-item { padding-right: 0; }
  .business { padding: 78px 0 86px; }
  .business-grid { grid-template-columns: 1fr; }
  .business-card figure { height: 260px; }
  .business-body { padding: 28px 24px 32px; }
  .business-body > p { min-height: 0; }
  .ecosystem { display: block; padding: 34px 26px; }
  .ecosystem > p { margin-top: 22px; }
  .news { padding: 80px 0 86px; }
  .news-grid { grid-template-columns: 1fr; }
  .news-card--feature { grid-column: auto; display: block; }
  .news-card figure, .news-card--feature figure { height: 240px; min-height: 0; }
  .news-note { align-items: flex-start; flex-direction: column; gap: 9px; }
  .careers { padding-bottom: 86px; }
  .careers-panel { grid-template-columns: 1fr; padding: 40px 26px; gap: 38px; }
  .careers-copy h2 { font-size: 36px; }
  .job-placeholder h3 { margin-top: 46px; }
  footer { padding-top: 56px; }
  .footer-main { grid-template-columns: 1fr; gap: 38px; }
  .footer-links { gap: 70px; }
  .back-top { justify-self: start; }
  .footer-bottom { flex-direction: column; gap: 9px; }
  .footer-bottom a { margin-left: 0; }
}

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