:root {
  --ink: #122033;
  --muted: #526173;
  --line: #dce5ec;
  --sky: #47b4ea;
  --deep: #0d1b2a;
  --paper: #ffffff;
  --wash: #f4f8fb;
  --max: 1120px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.7;
}

a { color: inherit; }
a:focus-visible { outline: 3px solid var(--sky); outline-offset: 4px; }

.container { width: min(calc(100% - 40px), var(--max)); margin-inline: auto; }

.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 10;
  padding: 8px 12px;
  color: #fff;
  background: var(--deep);
  transform: translateY(-150%);
}

.skip-link:focus { transform: translateY(0); }

.site-header { border-bottom: 1px solid var(--line); background: rgb(255 255 255 / 92%); }

.nav { min-height: 82px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }

.brand { display: inline-flex; align-items: center; gap: 11px; text-decoration: none; font-size: 17px; font-weight: 700; letter-spacing: .02em; }
.brand img { width: 36px; height: 36px; }

.nav-links { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 18px; }
.nav-links a { color: var(--muted); text-decoration: none; font-size: 14px; }
.nav-links a:hover { color: var(--ink); }

.hero { overflow: hidden; position: relative; padding: 108px 0 96px; color: #fff; background: radial-gradient(circle at 83% 16%, rgb(71 180 234 / 82%) 0, rgb(71 180 234 / 10%) 24%, transparent 44%), linear-gradient(125deg, #071729 0%, #0a2b4c 48%, #116eaa 130%); }
.hero::before { content: ""; position: absolute; inset: 0; opacity: .75; background-image: linear-gradient(rgb(198 238 255 / 10%) 1px, transparent 1px), linear-gradient(90deg, rgb(198 238 255 / 10%) 1px, transparent 1px); background-size: 54px 54px; mask-image: linear-gradient(to left, #000, transparent 72%); }
.hero::after { content: ""; position: absolute; right: -112px; bottom: -178px; width: 450px; height: 450px; border: 58px solid rgb(169 221 255 / 18%); border-radius: 50%; }
.hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(260px, .75fr); gap: 60px; align-items: end; }
.hero-grid > *, .values > *, .contact-grid > * { min-width: 0; }

.eyebrow { display: inline-flex; align-items: center; gap: 10px; color: #267ba8; font-size: 14px; font-weight: 700; letter-spacing: .08em; }
.eyebrow::before { content: ""; width: 32px; height: 2px; background: currentColor; }

h1, h2, h3, p { margin-top: 0; }
h1 { max-width: 720px; margin: 16px 0 20px; font-size: clamp(40px, 6vw, 70px); line-height: 1.12; letter-spacing: -.045em; }
h2 { margin-bottom: 18px; font-size: clamp(28px, 3.6vw, 43px); line-height: 1.25; letter-spacing: -.025em; }
h3 { margin-bottom: 10px; font-size: 21px; line-height: 1.4; }

.lead { max-width: 650px; color: var(--muted); font-size: clamp(17px, 2vw, 20px); }
.hero .eyebrow { color: #a9ddff; }
.hero .lead { color: #d9edf8; }
.hero-card { padding: 27px; border: 1px solid rgb(169 221 255 / 55%); border-radius: 18px; color: #eaf8ff; background: rgb(2 20 37 / 38%); box-shadow: 0 16px 46px rgb(0 8 20 / 23%); backdrop-filter: blur(7px); }
.hero-card p:last-child { margin-bottom: 0; }
.hero-card .label { display: block; margin-bottom: 8px; color: #a9ddff; font-size: 13px; font-weight: 700; letter-spacing: .08em; }

.cta-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 31px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 46px; padding: 10px 19px; border: 1px solid transparent; border-radius: 8px; font-weight: 700; line-height: 1.3; text-decoration: none; }
.button-primary { color: #06213b; background: #a9ddff; }
.button-primary:hover { background: #d8f1ff; }
.button-secondary { border-color: rgb(219 244 255 / 58%); color: #fff; background: rgb(255 255 255 / 7%); }
.button-secondary:hover { background: rgb(255 255 255 / 15%); }

.section { padding: 92px 0; }
.section-alt { background: var(--wash); }
.section-heading { max-width: 650px; margin-bottom: 42px; }
.section-heading p { color: var(--muted); }

.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.card { min-height: 230px; padding: 28px; border: 1px solid var(--line); border-radius: 16px; background: #fff; }
.card-index { display: block; margin-bottom: 32px; color: #267ba8; font-size: 13px; font-weight: 700; letter-spacing: .09em; }
.card p { margin-bottom: 0; color: var(--muted); }

.values { display: grid; grid-template-columns: .9fr 1.1fr; gap: 70px; align-items: start; }
.values-copy { color: var(--muted); font-size: 18px; }
.principles { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
.principles li { display: grid; grid-template-columns: 42px 1fr; gap: 16px; padding: 18px 0; border-bottom: 1px solid var(--line); }
.principles b { color: #267ba8; font-size: 14px; }

.contact { padding: 68px 0; color: #e7f2f8; background: var(--deep); }
.contact-grid { display: grid; grid-template-columns: .85fr 1.15fr; gap: 55px; }
.contact h2 { color: #fff; }
.contact p { color: #b9c8d5; }
.contact-note { padding: 25px; border-left: 3px solid var(--sky); background: rgb(255 255 255 / 6%); }
.contact-note p { margin: 0; }

.site-footer { padding: 35px 0; color: #637383; background: #08131f; font-size: 14px; }
.footer-grid { display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.footer-meta { display: flex; flex-wrap: wrap; gap: 12px 22px; }
.site-footer a { color: #d4e9f5; text-decoration: none; }
.site-footer a:hover { text-decoration: underline; }

.legal { padding: 82px 0 100px; }
.legal-header { padding: 52px 0; border-bottom: 1px solid var(--line); background: var(--wash); }
.legal-header h1 { margin-bottom: 0; font-size: clamp(34px, 5vw, 56px); }
.legal-content { max-width: 780px; }
.legal-content h2 { margin-top: 46px; font-size: 26px; }
.legal-content p, .legal-content li { color: var(--muted); }
.legal-content ul { padding-left: 1.35em; }
.legal-content .updated { color: #267ba8; font-size: 14px; }

@media (max-width: 760px) {
  .container { width: min(calc(100% - 32px), var(--max)); }
  .nav { min-height: auto; padding: 19px 0; align-items: flex-start; flex-direction: column; }
  .nav-links { justify-content: flex-start; gap: 9px 16px; }
  .hero { padding: 72px 0 65px; }
  .hero-grid, .values, .contact-grid { grid-template-columns: 1fr; gap: 34px; }
  h1 { font-size: clamp(34px, 10.3vw, 40px); overflow-wrap: anywhere; word-break: break-word; }
  .hero .lead { overflow-wrap: anywhere; word-break: break-word; }
  .cards { grid-template-columns: 1fr; }
  .section { padding: 66px 0; }
  .hero-card { width: 100%; max-width: 420px; }
  .footer-grid { align-items: flex-start; flex-direction: column; }
}

@media (max-width: 320px) {
  .container { width: calc(100% - 24px); }
  .brand { font-size: 15px; }
  .brand img { width: 32px; height: 32px; }
  .eyebrow { gap: 8px; font-size: 11px; letter-spacing: .04em; }
  .eyebrow::before { width: 20px; }
  h1 { font-size: 34px; }
  .button { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; }
}