:root {
  --ink: #060c1d;
  --surface: #0b1530;
  --text: #f4f7ff;
  --muted: #a9b7d2;
  --accent: #ff9f43;
  --accent-ink: #1a0d00;
  --line: rgba(181, 205, 255, 0.18);
  --line-strong: rgba(255, 159, 67, 0.64);
  --container: min(1120px, calc(100% - 48px));
  --section-space: clamp(72px, 10vw, 128px);
  --radius: 18px;
  --fast: 160ms;
  --normal: 280ms;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  min-width: 320px;
  margin: 0;
  color: var(--text);
  background: var(--ink);
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  line-height: 1.65;
}
a { color: inherit; text-decoration: none; }
button { font: inherit; }
.container { width: var(--container); margin-inline: auto; }

.site-header {
  position: fixed;
  z-index: 10;
  top: 0;
  width: 100%;
  height: 72px;
  border-bottom: 1px solid rgba(181, 205, 255, 0.14);
  background: rgba(6, 12, 29, 0.88);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 100%; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-size: 17px; font-weight: 700; letter-spacing: 0.08em; }
.brand-mark {
  display: grid;
  width: 28px;
  aspect-ratio: 1;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  color: var(--accent);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 15px;
  letter-spacing: 0;
}
nav ul { display: flex; gap: 30px; margin: 0; padding: 0; list-style: none; }
nav a { display: block; padding: 24px 0 20px; color: var(--muted); font-size: 14px; transition: color var(--fast) var(--ease); }
nav a:hover, nav a.active { color: var(--text); }
nav a.active { border-bottom: 2px solid var(--accent); }
.mobile-menu-btn { display: none; border: 0; padding: 10px 0 10px 12px; color: var(--text); background: transparent; cursor: pointer; }
.mobile-menu-btn span { display: block; width: 22px; height: 1px; margin: 5px 0; background: currentColor; }

.banner { position: relative; min-height: clamp(560px, 78dvh, 760px); margin-top: 72px; overflow: hidden; }
.slider, .slide { min-height: inherit; }
.slide {
  position: relative;
  display: flex;
  align-items: center;
  padding: 72px 24px;
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
}
.slide::before {
  position: absolute;
  inset: 0;
  content: "";
  background: linear-gradient(90deg, rgba(6, 12, 29, 0.98) 0%, rgba(6, 12, 29, 0.86) 36%, rgba(6, 12, 29, 0.28) 72%, rgba(6, 12, 29, 0.2) 100%);
}
.slide .content { position: relative; z-index: 1; width: min(1120px, 100%); margin-inline: auto; }
.slide .content h2 {
  max-width: 7ch;
  margin: 0 0 20px;
  font-size: clamp(48px, 7vw, 96px);
  font-weight: 750;
  letter-spacing: -0.06em;
  line-height: 1.05;
}
.slide .content p { max-width: 28rem; margin: 0 0 30px; color: #d3def4; font-size: clamp(16px, 1.8vw, 19px); }
.btn {
  display: inline-flex;
  align-items: center;
  min-height: 46px;
  padding: 0 20px;
  border-radius: 10px;
  color: var(--accent-ink);
  background: var(--accent);
  font-weight: 700;
  transition: transform var(--fast) var(--ease), background var(--fast) var(--ease);
}
.btn:hover { background: #ffb66f; transform: translateY(-2px); }
.btn:active { transform: translateY(1px); }

.direction-section, .about-preview, .about-section, .company-values { padding: var(--section-space) 0; }
.direction-section { background: var(--surface); }
.direction-grid, .about-grid, .about-layout { display: grid; grid-template-columns: minmax(0, 1.08fr) minmax(280px, 0.92fr); gap: clamp(40px, 8vw, 112px); align-items: start; }
.section-label { margin: 0 0 14px; color: var(--accent); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 12px; font-weight: 700; letter-spacing: 0.12em; }
.section-copy h2, .about-text h2, .page-intro h1 { max-width: 12ch; margin: 0 0 20px; font-size: clamp(32px, 4.1vw, 56px); letter-spacing: -0.045em; line-height: 1.18; }
.section-copy > p:last-child, .about-text > p:not(.section-label), .page-intro > .container > p:last-child { max-width: 36rem; margin: 0; color: var(--muted); font-size: 17px; }
.direction-list { margin: 0; border-top: 1px solid var(--line); }
.direction-list div { display: grid; grid-template-columns: 8.5rem 1fr; gap: 20px; padding: 24px 0; border-bottom: 1px solid var(--line); }
.direction-list dt { color: var(--text); font-size: 17px; font-weight: 700; }
.direction-list dd { margin: 0; color: var(--muted); }

.about-preview { background: var(--ink); }
.about-text { padding-top: clamp(4px, 4vw, 44px); }
.about-text .btn { margin-top: 30px; }
.about-image { position: relative; margin: 0; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); box-shadow: 0 28px 64px rgba(0, 0, 0, 0.32); }
.about-image::after { position: absolute; inset: 0; content: ""; background: linear-gradient(180deg, transparent 60%, rgba(6, 12, 29, 0.5)); pointer-events: none; }
.about-image img { display: block; width: 100%; min-height: 340px; object-fit: cover; }

.page-intro { padding: clamp(128px, 18vw, 210px) 0 clamp(72px, 10vw, 120px); background: radial-gradient(circle at 82% 12%, rgba(255, 159, 67, 0.17), transparent 22%), var(--surface); }
.page-intro h1 { font-size: clamp(50px, 7vw, 88px); }
.about-section { background: var(--ink); }
.about-full { color: #cfdaef; font-size: 18px; }
.about-full p { margin: 0 0 20px; }
.about-full p:last-child { margin-bottom: 0; }
.company-facts { border-top: 1px solid var(--line-strong); }
.company-facts dl { margin: 0; }
.company-facts div { display: grid; grid-template-columns: 6.5rem 1fr; gap: 16px; padding: 18px 0; border-bottom: 1px solid var(--line); }
.company-facts dt { color: var(--muted); font-size: 14px; }
.company-facts dd { margin: 0; font-weight: 700; }
.company-values { background: var(--surface); }
.compact { margin-bottom: 44px; }
.values-container { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); border-top: 1px solid var(--line); }
.value-item { min-height: 205px; padding: 28px 28px 28px 0; border-bottom: 1px solid var(--line); }
.value-item:nth-child(1) { grid-column: span 5; }
.value-item:nth-child(2) { grid-column: span 3; padding-left: 28px; border-left: 1px solid var(--line); }
.value-item:nth-child(3) { grid-column: span 4; padding-left: 28px; border-left: 1px solid var(--line); }
.value-item h3 { margin: 0 0 12px; font-size: 22px; letter-spacing: -0.03em; }
.value-item h3 i { display: none; }
.value-item p { margin: 0; color: var(--muted); }

.site-footer { padding: 48px 0; border-top: 1px solid var(--line); background: var(--ink); }
.footer-grid { display: flex; align-items: end; justify-content: space-between; gap: 32px; }
.footer-brand { margin-bottom: 14px; }
.site-footer p { margin: 0; color: var(--muted); font-size: 14px; }
.footer-legal { display: grid; gap: 6px; text-align: right; }
.footer-legal a:hover { color: var(--accent); }

@media (max-width: 760px) {
  :root { --container: min(100% - 40px, 1120px); }
  .site-header { height: 64px; }
  .banner { min-height: 620px; margin-top: 64px; }
  .mobile-menu-btn { display: block; }
  nav { position: absolute; top: 64px; right: 0; left: 0; max-height: 0; overflow: hidden; border-bottom: 1px solid transparent; background: rgba(6, 12, 29, 0.98); transition: max-height var(--normal) var(--ease), border-color var(--normal) var(--ease); }
  nav.active { max-height: 160px; border-color: var(--line); }
  nav ul { display: block; padding: 10px 24px 18px; }
  nav a { padding: 11px 0; }
  nav a.active { border-bottom: 0; color: var(--accent); }
  .slide { align-items: flex-end; padding-bottom: 72px; }
  .slide::before { background: linear-gradient(180deg, rgba(6, 12, 29, 0.32) 0%, rgba(6, 12, 29, 0.94) 62%, rgba(6, 12, 29, 1) 100%); }
  .slide .content h2 { max-width: 6ch; font-size: clamp(48px, 15vw, 68px); }
  .direction-grid, .about-grid, .about-layout { grid-template-columns: 1fr; gap: 44px; }
  .about-text { padding-top: 0; }
  .about-image { order: -1; }
  .about-image img { min-height: 260px; }
  .values-container { display: block; }
  .value-item, .value-item:nth-child(n) { min-height: 0; padding: 24px 0; border-left: 0; }
  .footer-grid { display: grid; align-items: start; }
  .footer-legal { text-align: left; }
}

@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; }
}