:root {
  color-scheme: light;
  --ink: #142743;
  --muted: #536982;
  --line: #d8e5f3;
  --blue: #1260b9;
  --blue-dark: #0b376b;
  --paper: #fff;
  --surface: #f4f8fd;
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); line-height: 1.7; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
img { max-width: 100%; }
.wrap { width: min(1160px, calc(100% - 48px)); margin: 0 auto; }
.skip { position: absolute; left: -9999px; top: 8px; z-index: 30; padding: 8px 12px; background: #fff; }
.skip:focus { left: 8px; }

.site-header { position: sticky; top: 0; z-index: 20; background: rgba(255,255,255,.96); border-bottom: 1px solid var(--line); backdrop-filter: blur(14px); }
.header-inner { min-height: 74px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 12px; font-weight: 800; font-size: 1.2rem; letter-spacing: .04em; white-space: nowrap; }
.brand-mark { width: 34px; height: 34px; display: inline-block; position: relative; border: 7px solid #1670d2; border-right-color: #75b9ed; border-radius: 12px; transform: rotate(-18deg); }
.brand-mark::after { content: ""; position: absolute; width: 9px; height: 9px; border-radius: 50%; background: #0b376b; top: 5px; left: 5px; }
.nav { display: flex; align-items: center; gap: 34px; font-size: .94rem; font-weight: 600; }
.nav a { padding: 26px 0 23px; border-bottom: 3px solid transparent; color: #39516f; }
.nav a:hover, .nav a[aria-current="page"] { color: var(--blue); border-color: var(--blue); }
.menu-button { display: none; border: 1px solid var(--line); background: #fff; border-radius: 8px; padding: 8px 11px; color: var(--ink); }

.hero { overflow: hidden; position: relative; color: #fff; background: linear-gradient(117deg, #153e75 0%, #1167c1 56%, #0b376b 100%); }
.hero::before, .hero::after { content: ""; position: absolute; pointer-events: none; border: 1px solid rgba(255,255,255,.2); border-radius: 50%; }
.hero::before { width: 660px; height: 660px; right: -110px; top: -320px; }
.hero::after { width: 430px; height: 430px; right: 210px; bottom: -330px; }
.hero-grid { position: absolute; inset: 0; opacity: .13; background-image: linear-gradient(rgba(255,255,255,.5) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.5) 1px, transparent 1px); background-size: 42px 42px; mask-image: linear-gradient(90deg, transparent 18%, #000 100%); }
.hero-inner { position: relative; min-height: 480px; display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(250px, .85fr); align-items: center; gap: 50px; padding: 70px 0; }
.eyebrow { text-transform: uppercase; letter-spacing: .18em; font-size: .76rem; font-weight: 800; }
.hero .eyebrow { color: #b4d9ff; }
.hero h1 { max-width: 720px; font-size: clamp(2.2rem, 4.4vw, 3.7rem); line-height: 1.25; letter-spacing: -.035em; margin: 14px 0 22px; }
.hero p { max-width: 610px; color: #e5f2ff; font-size: 1.1rem; margin: 0 0 30px; }
.hero-art { aspect-ratio: 1; display: grid; place-items: center; position: relative; }
.hero-art::before { content: ""; width: 68%; height: 68%; border: 1px solid rgba(255,255,255,.5); border-radius: 30px; transform: rotate(-20deg); box-shadow: 0 0 0 26px rgba(255,255,255,.035), 0 0 0 54px rgba(255,255,255,.025); }
.hero-art::after { content: ""; position: absolute; width: 38%; height: 38%; border: 1px solid rgba(255,255,255,.65); border-radius: 50%; background: radial-gradient(circle, rgba(184,224,255,.35), transparent 70%); }
.btn { min-height: 46px; display: inline-flex; align-items: center; justify-content: center; gap: 9px; border-radius: 8px; padding: 10px 20px; font-weight: 700; transition: transform .18s, background .18s; }
.btn:hover { transform: translateY(-2px); }
.btn-light { background: #fff; color: var(--blue-dark); }
.btn-light:hover { background: #e8f3ff; }
.btn-blue { background: var(--blue); color: #fff; }
.btn-blue:hover { background: #0c4e98; }
.btn-outline { border: 1px solid #a6c5e5; color: var(--blue-dark); background: #fff; }

.section { padding: 92px 0; }
.section-alt { background: var(--surface); }
.section-head { max-width: 720px; margin-bottom: 35px; }
.section-head.center { text-align: center; margin-left: auto; margin-right: auto; }
.section-head .eyebrow { color: var(--blue); }
h2 { font-size: clamp(1.75rem, 3vw, 2.45rem); line-height: 1.3; margin: 10px 0 14px; letter-spacing: -.02em; }
h3 { font-size: 1.18rem; line-height: 1.4; margin: 0 0 12px; }
p { margin: 0 0 16px; }
.section-head p, .lead { color: var(--muted); font-size: 1.02rem; }
.cards { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 18px; }
.card { background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 28px 24px; box-shadow: 0 10px 24px rgba(23,73,129,.035); }
.card p { color: var(--muted); font-size: .94rem; margin: 0; }
.card-icon { width: 42px; height: 42px; display: grid; place-items: center; border-radius: 10px; margin-bottom: 24px; background: #e8f3ff; color: var(--blue); font-size: 1.15rem; font-weight: 800; }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 68px; align-items: center; }
.statement { border-left: 4px solid var(--blue); padding: 7px 0 7px 24px; color: var(--muted); }
.text-link { color: var(--blue); font-weight: 700; display: inline-flex; gap: 8px; align-items: center; }
.text-link:hover { text-decoration: underline; }
.panel { background: #eaf4ff; border: 1px solid #c7e0f8; border-radius: 20px; padding: 36px; }
.panel strong { color: var(--blue-dark); }
.panel-lines { display: grid; gap: 14px; }
.panel-lines span { display: block; border-left: 3px solid #6cb1eb; padding-left: 14px; }
.cta { background: linear-gradient(110deg, #0d3f78, #1264b5); color: #fff; }
.cta-inner { padding: 64px 0; display: flex; align-items: center; justify-content: space-between; gap: 25px; }
.cta h2 { margin: 0 0 7px; }
.cta p { margin: 0; color: #dcecff; }
.page-hero { background: linear-gradient(105deg, #123c72, #176fc3); color: #fff; padding: 90px 0; }
.page-hero h1 { font-size: clamp(2.2rem, 4vw, 3.3rem); line-height: 1.22; margin: 10px 0 15px; }
.page-hero p { max-width: 680px; color: #e4f1ff; margin: 0; }
.steps { counter-reset: step; display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
.step { border-top: 2px solid #b8d7f3; padding-top: 18px; }
.step::before { counter-increment: step; content: counter(step, decimal-leading-zero); display: block; color: var(--blue); font-weight: 800; font-size: 1.5rem; margin-bottom: 12px; }
.step p { color: var(--muted); font-size: .92rem; }
.empty-state { max-width: 700px; margin: 0 auto; text-align: center; padding: 40px 0 55px; }
.empty-state .symbol { width: 72px; height: 72px; border: 2px solid #a4ccf2; border-radius: 20px; margin: 0 auto 24px; display: grid; place-items: center; color: var(--blue); font-size: 2rem; }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 45px; }
.contact-box { background: var(--surface); border: 1px solid var(--line); border-radius: 16px; padding: 34px; }
.contact-box dt { color: var(--muted); font-size: .9rem; }
.contact-box dd { margin: 2px 0 24px; font-weight: 650; overflow-wrap: anywhere; }
.contact-box dd:last-child { margin-bottom: 0; }
.contact-number { color: var(--blue); font-size: 1.45rem; font-weight: 800; }

.site-footer { background: #102a4a; color: #dce9f7; padding: 48px 0 26px; }
.footer-top { display: flex; justify-content: space-between; gap: 30px; padding-bottom: 34px; }
.footer-top p { max-width: 480px; color: #bdd0e4; font-size: .92rem; }
.footer-nav { display: flex; flex-wrap: wrap; gap: 20px; font-size: .9rem; }
.footer-nav a:hover { text-decoration: underline; }
.copyright { border-top: 1px solid rgba(255,255,255,.14); padding-top: 20px; color: #a6bfda; font-size: .82rem; }

@media (max-width: 900px) {
  .cards { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .steps { grid-template-columns: repeat(3, 1fr); }
  .hero-inner { gap: 10px; }
}

@media (max-width: 680px) {
  .wrap { width: min(100% - 32px, 1160px); }
  .header-inner { min-height: 66px; }
  .brand { font-size: 1.08rem; }
  .menu-button { display: inline-flex; }
  .nav { display: none; position: absolute; top: 66px; left: 0; right: 0; flex-direction: column; gap: 0; align-items: stretch; background: #fff; box-shadow: 0 16px 25px rgba(0,0,0,.08); padding: 5px 16px 13px; }
  .nav.is-open { display: flex; }
  .nav a { padding: 12px 9px; border-bottom-width: 1px; }
  .hero-inner { grid-template-columns: 1fr; min-height: 460px; padding: 66px 0; }
  .hero-art { display: none; }
  .hero h1 { font-size: clamp(2.1rem, 8vw, 3rem); }
  .section { padding: 67px 0; }
  .cards, .split, .contact-grid { grid-template-columns: 1fr; }
  .split { gap: 28px; }
  .steps { grid-template-columns: 1fr 1fr; }
  .cta-inner, .footer-top { align-items: flex-start; flex-direction: column; }
  .page-hero { padding: 70px 0; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .btn { transition: none; }
}