:root {
  color-scheme: light;
  --ink: #17233b;
  --muted: #5b6880;
  --blue: #246bff;
  --cyan: #24c7dc;
  --line: #dfe7f2;
  --paper: #f5f8fd;
  --card: #ffffff;
  --navy: #08152b;
  --max: 1120px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font: 16px/1.75 -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC", "Microsoft YaHei", sans-serif;
}

a { color: var(--blue); text-underline-offset: 3px; }
a:hover { color: #124ec9; }

.wrap { width: min(var(--max), calc(100% - 40px)); margin: 0 auto; }

.nav {
  min-height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  color: var(--ink);
  font-weight: 750;
  text-decoration: none;
  letter-spacing: -.02em;
}

.brand img { width: 38px; height: 38px; border-radius: 11px; }
.nav-links { display: flex; flex-wrap: wrap; gap: 22px; }
.nav-links a { color: var(--muted); text-decoration: none; font-size: 14px; }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--blue); }

.hero {
  position: relative;
  overflow: hidden;
  color: #fff;
  background: linear-gradient(120deg, #0c1d3d 5%, #0a2d68 56%, #1465c9 100%);
  isolation: isolate;
}

.hero-art {
  position: absolute;
  z-index: -2;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 58%;
  opacity: .78;
}

.hero::after {
  position: absolute;
  z-index: -1;
  inset: 0;
  content: "";
  background: linear-gradient(90deg, rgba(5, 16, 37, .96) 0%, rgba(5, 20, 48, .84) 42%, rgba(5, 24, 57, .18) 100%);
}

.hero-inner { padding: 92px 0 100px; max-width: var(--max); margin: 0 auto; width: min(var(--max), calc(100% - 40px)); }
.eyebrow { margin: 0 0 14px; color: #93eaff; font-size: 13px; font-weight: 700; letter-spacing: .13em; text-transform: uppercase; }
.hero h1 { max-width: 720px; margin: 0; font-size: clamp(40px, 6vw, 68px); line-height: 1.08; letter-spacing: -.045em; }
.hero .lead { max-width: 640px; margin: 22px 0 0; color: #d8e8ff; font-size: clamp(17px, 2vw, 20px); }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 46px; padding: 11px 18px; border: 1px solid rgba(255,255,255,.72); border-radius: 999px; color: #0b1a34; background: #fff; font-weight: 700; text-decoration: none; }
.button.secondary { color: #fff; background: rgba(7, 20, 45, .2); border-color: rgba(255,255,255,.34); }
.button:hover { color: #0b1a34; background: #dff7ff; }
.button.secondary:hover { color: #fff; background: rgba(255,255,255,.14); }

.section { padding: 82px 0; }
.section.soft { background: #edf3fb; }
.section-heading { max-width: 720px; margin-bottom: 30px; }
.section-heading .eyebrow { color: #3e78e8; }
h2 { margin: 0; font-size: clamp(29px, 4vw, 42px); line-height: 1.18; letter-spacing: -.035em; }
.section-heading p { margin: 14px 0 0; color: var(--muted); font-size: 17px; }

.feature-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.feature-card { padding: 25px; border: 1px solid var(--line); border-radius: 20px; background: var(--card); box-shadow: 0 14px 32px rgba(29, 54, 93, .055); }
.feature-number { display: inline-flex; width: 38px; height: 38px; align-items: center; justify-content: center; margin-bottom: 15px; border-radius: 12px; color: #fff; background: linear-gradient(135deg, var(--blue), var(--cyan)); font-weight: 800; }
.feature-card h3 { margin: 0 0 8px; font-size: 19px; }
.feature-card p { margin: 0; color: var(--muted); }
.feature-card p + p { margin-top: 11px; }

.visual-row { display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: 56px; }
.visual-row img { display: block; width: 100%; border-radius: 24px; box-shadow: 0 24px 55px rgba(18, 45, 91, .18); }
.visual-copy p { color: var(--muted); font-size: 17px; }
.check-list { display: grid; gap: 10px; margin: 22px 0 0; padding: 0; list-style: none; }
.check-list li::before { content: "✓"; display: inline-flex; width: 23px; height: 23px; align-items: center; justify-content: center; margin-right: 9px; border-radius: 50%; color: #1268d6; background: #deefff; font-size: 13px; font-weight: 800; }

.note { margin-top: 28px; padding: 20px 22px; border: 1px solid #d5e5fa; border-radius: 16px; color: #33435d; background: #f4f9ff; }
.note p { margin: 0; }
.note p + p { margin-top: 8px; color: var(--muted); }

.content-page { padding: 62px 0 88px; }
.page-header { max-width: 760px; margin-bottom: 28px; }
.page-header .eyebrow { color: #3e78e8; }
.page-header h1 { margin: 0; font-size: clamp(36px, 5vw, 54px); line-height: 1.12; letter-spacing: -.04em; }
.page-header .lead { margin: 16px 0 0; color: var(--muted); font-size: 18px; }
.updated { display: block; margin-top: 15px; color: #71809a; font-size: 14px; }
.lang-jump { display: flex; gap: 14px; margin: 0 0 26px; font-size: 14px; }
.prose { padding: clamp(22px, 5vw, 42px); border: 1px solid var(--line); border-radius: 22px; background: var(--card); box-shadow: 0 14px 38px rgba(29, 54, 93, .05); }
.prose + .prose { margin-top: 20px; }
.prose h2 { margin: 34px 0 11px; font-size: 23px; letter-spacing: -.02em; }
.prose h2:first-child { margin-top: 0; }
.prose h3 { margin: 24px 0 7px; font-size: 18px; }
.prose p { margin: 9px 0; color: #3e4d66; }
.prose ul, .prose ol { padding-left: 23px; color: #3e4d66; }
.prose li { margin: 7px 0; }
.prose strong { color: var(--ink); }
.callout { margin: 18px 0; padding: 17px 19px; border-left: 4px solid var(--blue); border-radius: 0 12px 12px 0; background: #f1f6ff; }
.callout p { margin: 0; }
.callout p + p { margin-top: 8px; }

.faq-list { display: grid; gap: 12px; }
.faq-list details { padding: 18px 20px; border: 1px solid var(--line); border-radius: 16px; background: #fff; }
.faq-list summary { cursor: pointer; color: var(--ink); font-weight: 700; }
.faq-list details p { margin: 13px 0 0; color: var(--muted); }
.contact-card { margin-top: 24px; padding: 24px; border-radius: 18px; color: #fff; background: linear-gradient(120deg, #122a55, #155ab4); }
.contact-card h2 { font-size: 25px; }
.contact-card p { color: #dbe9ff; }
.contact-card a { color: #fff; font-weight: 700; }

footer { padding: 24px 0 34px; border-top: 1px solid var(--line); color: #71809a; font-size: 14px; }
.footer-inner { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 17px; }
.footer-links a { color: var(--muted); text-decoration: none; }

@media (max-width: 760px) {
  .nav { min-height: 68px; }
  .nav-links { gap: 13px; }
  .nav-links a { font-size: 13px; }
  .hero-inner { padding: 72px 0 78px; }
  .feature-grid { grid-template-columns: 1fr; }
  .visual-row { grid-template-columns: 1fr; gap: 30px; }
  .visual-row img { order: 2; }
  .section { padding: 60px 0; }
}

@media (max-width: 460px) {
  .wrap, .hero-inner { width: min(var(--max), calc(100% - 28px)); }
  .nav { align-items: flex-start; flex-direction: column; justify-content: center; gap: 9px; padding: 15px 0; }
  .nav-links { gap: 16px; }
  .hero-inner { padding: 58px 0 64px; }
  .content-page { padding: 44px 0 64px; }
  .footer-inner { align-items: flex-start; flex-direction: column; }
}