:root {
  --night: #08111f;
  --surface: #0d1a2d;
  --line: rgba(203, 222, 244, 0.19);
  --ink: #f4f8ff;
  --muted: #a8b8cc;
  --blue: #48a7ff;
  --cyan: #7de5f2;
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--night);
  font-family: "Manrope", "Noto Sans SC", sans-serif;
  line-height: 1.6;
}
a { color: inherit; text-decoration: none; }
a:focus-visible { outline: 2px solid var(--cyan); outline-offset: 4px; }
.shell { width: min(var(--max), calc(100% - 48px)); margin: 0 auto; }
.nav {
  display: flex; align-items: center; justify-content: space-between;
  min-height: 84px; border-bottom: 1px solid var(--line);
}
.brand { font-size: 18px; font-weight: 800; letter-spacing: -0.04em; }
.brand span { color: var(--blue); }
.nav-actions { display: flex; align-items: center; gap: 24px; }
.nav-link { color: var(--muted); font-size: 14px; }
.nav-link:hover { color: var(--ink); }
.hero {
  display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(360px, .95fr);
  gap: clamp(40px, 7vw, 108px); align-items: center;
  min-height: 650px; padding: 76px 0 88px;
}
.eyebrow { color: var(--cyan); font-size: 12px; font-weight: 800; letter-spacing: .16em; text-transform: uppercase; }
h1, h2, h3, p { margin-top: 0; }
h1 {
  max-width: 760px; margin: 16px 0 24px; font-size: clamp(48px, 6vw, 82px);
  line-height: .98; letter-spacing: -0.065em; font-weight: 800;
}
.hero-copy { max-width: 610px; color: var(--muted); font-size: 18px; }
.anchor-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 32px; }
.anchor-row span { border: 1px solid var(--line); color: #cfdbec; padding: 7px 11px; font-size: 12px; letter-spacing: .04em; }
.visual { position: relative; }
.visual::before { content: "01 / VELA AGENT"; display: block; color: var(--blue); font-size: 11px; letter-spacing: .15em; margin-bottom: 12px; }
.visual-frame { background: #f6f9ff; border: 1px solid #b8c8dc; padding: 10px; box-shadow: 16px 16px 0 rgba(72, 167, 255, .12); }
.visual img { display: block; width: 100%; height: auto; }
.visual-caption { margin-top: 14px; color: var(--muted); font-size: 13px; }
.section { padding: 92px 0; border-top: 1px solid var(--line); }
.section-head { display: grid; grid-template-columns: 1fr 2fr; gap: 32px; margin-bottom: 44px; }
.section-head h2 { margin: 0; font-size: clamp(30px, 3.4vw, 50px); line-height: 1.05; letter-spacing: -0.05em; }
.section-head p { max-width: 620px; margin: 8px 0 0; color: var(--muted); }
.loop { border-top: 1px solid var(--line); }
.loop-item { display: grid; grid-template-columns: 100px 1fr minmax(210px, 330px); gap: 24px; padding: 30px 0; border-bottom: 1px solid var(--line); }
.loop-index { color: var(--blue); font-size: 13px; letter-spacing: .12em; }
.loop-item h3 { margin: 0; font-size: 24px; letter-spacing: -0.035em; }
.loop-item p { margin: 0; color: var(--muted); }
.statement { padding: 100px 0; text-align: center; }
.statement blockquote { max-width: 900px; margin: 0 auto; font-size: clamp(31px, 4.2vw, 58px); line-height: 1.12; letter-spacing: -0.055em; font-weight: 700; }
.statement cite { display: block; margin-top: 25px; color: var(--cyan); font-size: 13px; font-style: normal; letter-spacing: .13em; }
.stack { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.stack article { min-height: 190px; padding: 25px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.stack b { display: block; margin-bottom: 14px; font-size: 18px; }
.stack p { margin: 0; color: var(--muted); font-size: 14px; }
.footer { display: flex; justify-content: space-between; gap: 24px; padding: 32px 0 48px; color: var(--muted); font-size: 12px; border-top: 1px solid var(--line); }
.footer a { color: #d7e6f8; }
.footer a:hover { color: var(--cyan); }

/* Chinese glyphs carry more visual mass than the Latin display face above. */
.zh-page h1 {
  font-size: clamp(44px, 5vw, 68px);
  line-height: 1.08;
  letter-spacing: -0.045em;
}
.zh-page .hero-copy { font-size: 17px; line-height: 1.84; }
.zh-page .eyebrow { letter-spacing: .08em; }
.zh-page .anchor-row span { font-size: 13px; letter-spacing: 0; }
.zh-page .section-head h2 { font-size: clamp(29px, 3vw, 44px); letter-spacing: -0.04em; }
.zh-page .statement blockquote { font-size: clamp(30px, 3.7vw, 50px); line-height: 1.18; letter-spacing: -0.04em; }
.zh-page .loop-item h3 { font-size: 22px; }

@media (max-width: 800px) {
  .shell { width: min(var(--max), calc(100% - 32px)); }
  .hero { grid-template-columns: 1fr; min-height: auto; padding: 70px 0; }
  .visual { max-width: 560px; }
  .section { padding: 68px 0; }
  .section-head { grid-template-columns: 1fr; gap: 12px; }
  .loop-item { grid-template-columns: 54px 1fr; gap: 12px; }
  .loop-item p { grid-column: 2; }
  .stack { grid-template-columns: 1fr 1fr; }
  .statement { padding: 76px 0; }
}

@media (max-width: 480px) {
  .nav { min-height: 68px; }
  .nav-actions { gap: 14px; }
  .nav-link { font-size: 13px; }
  h1 { font-size: 47px; }
  .zh-page h1 { font-size: 45px; }
  .hero-copy { font-size: 16px; }
  .stack { grid-template-columns: 1fr; }
  .footer { display: block; }
  .footer p + p { margin-top: 14px; }
}