:root {
  color-scheme: dark;
  --page: #08111f;
  --page-soft: #0c1727;
  --surface: #111d2d;
  --surface-soft: #152235;
  --text: #f3f7fb;
  --text-muted: #a8b5c5;
  --line: rgba(202, 217, 234, 0.16);
  --accent: #4f9bea;
  --accent-strong: #68b3ff;
  --accent-text: #06101d;
  --radius: 14px;
  --shell: min(1180px, calc(100% - 48px));
  font-family:
    "Segoe UI",
    "PingFang SC",
    "Microsoft YaHei",
    "Noto Sans CJK SC",
    system-ui,
    sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 88px;
}

body {
  margin: 0;
  background: var(--page);
  color: var(--text);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

.shell {
  width: var(--shell);
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 20;
  padding: 10px 14px;
  border-radius: 8px;
  background: var(--text);
  color: var(--page);
  transform: translateY(-150%);
}

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

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 10;
  border-bottom: 1px solid var(--line);
  background: rgba(8, 17, 31, 0.86);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
}

.header-inner {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 14px;
  white-space: nowrap;
}

.brand-name {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.brand-company {
  color: var(--text-muted);
  font-size: 12px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 28px;
  white-space: nowrap;
}

.site-nav a {
  color: var(--text-muted);
  font-size: 14px;
  transition: color 160ms ease;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--text);
}

.hero {
  position: relative;
  min-height: 100dvh;
  display: grid;
  align-items: center;
  isolation: isolate;
  overflow: hidden;
}

.hero-backdrop {
  position: absolute;
  inset: 0;
  z-index: -2;
  background-image:
    linear-gradient(90deg, rgba(5, 12, 22, 0.97) 0%, rgba(5, 12, 22, 0.8) 38%, rgba(5, 12, 22, 0.13) 72%),
    linear-gradient(0deg, rgba(8, 17, 31, 0.82) 0%, rgba(8, 17, 31, 0) 38%),
    url("/assets/hero-abstract.png");
  background-position: center;
  background-size: cover;
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 140px;
  z-index: -1;
  background: linear-gradient(transparent, var(--page));
  pointer-events: none;
}

.hero-inner {
  padding-top: 72px;
}

.hero-copy {
  max-width: 650px;
}

.eyebrow,
.section-kicker {
  margin: 0 0 18px;
  color: var(--accent-strong);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.16em;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 24px;
  font-size: clamp(52px, 7vw, 92px);
  line-height: 1.06;
  letter-spacing: -0.055em;
}

.hero-summary {
  max-width: 520px;
  margin-bottom: 34px;
  color: #cfdae7;
  font-size: clamp(18px, 2vw, 22px);
  line-height: 1.65;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 22px;
  border: 1px solid transparent;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 700;
  white-space: nowrap;
  transition: transform 160ms ease, background 160ms ease, border-color 160ms ease;
}

.button:active {
  transform: translateY(1px);
}

.button-primary {
  background: var(--accent-strong);
  color: var(--accent-text);
}

.button-primary:hover,
.button-primary:focus-visible {
  background: #8bc5ff;
}

.button-secondary {
  border-color: rgba(232, 240, 249, 0.3);
  background: rgba(8, 17, 31, 0.5);
  color: var(--text);
}

.button-secondary:hover,
.button-secondary:focus-visible {
  border-color: rgba(232, 240, 249, 0.6);
  background: rgba(18, 32, 50, 0.75);
}

.section {
  padding-block: 120px;
}

.about-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  gap: clamp(56px, 9vw, 140px);
  align-items: start;
}

h2 {
  margin-bottom: 20px;
  font-size: clamp(34px, 5vw, 58px);
  line-height: 1.15;
  letter-spacing: -0.04em;
}

h3 {
  margin-bottom: 10px;
  font-size: 21px;
  line-height: 1.35;
}

.about-copy {
  color: var(--text-muted);
  font-size: 17px;
}

.about-copy p:last-child {
  margin-bottom: 0;
}

.about-copy .lead {
  color: var(--text);
  font-size: clamp(21px, 2.7vw, 30px);
  line-height: 1.55;
}

.principles {
  padding-block: 84px;
  border-block: 1px solid var(--line);
  background: var(--page-soft);
}

.principles-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: clamp(48px, 8vw, 120px);
  align-items: start;
}

.principles-statement {
  max-width: 650px;
  margin-bottom: 0;
  font-size: clamp(30px, 4.2vw, 52px);
  font-weight: 650;
  line-height: 1.35;
  letter-spacing: -0.035em;
}

.principles-list {
  display: grid;
  gap: 0;
}

.principles-list article {
  padding-block: 26px;
  border-bottom: 1px solid var(--line);
}

.principles-list article:first-child {
  padding-top: 0;
}

.principles-list article:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.principles-list p {
  margin-bottom: 0;
  color: var(--text-muted);
}

.information {
  background: var(--page);
}

.information-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.72fr) minmax(0, 1.28fr);
  gap: clamp(48px, 8vw, 120px);
  align-items: start;
}

.information-heading {
  position: sticky;
  top: 112px;
}

.information-heading p {
  max-width: 420px;
  margin-bottom: 0;
  color: var(--text-muted);
}

.information-list {
  margin: 0;
  border-top: 1px solid var(--line);
}

.information-list div {
  display: grid;
  grid-template-columns: 140px minmax(0, 1fr);
  gap: 24px;
  padding-block: 22px;
  border-bottom: 1px solid var(--line);
}

.information-list dt {
  color: var(--text-muted);
}

.information-list dd {
  margin: 0;
  font-weight: 650;
  overflow-wrap: anywhere;
}

.contact {
  padding-block: 80px;
  border-top: 1px solid var(--line);
  background: var(--surface);
}

.contact-inner {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 40px;
}

.contact h2 {
  margin-bottom: 12px;
}

.contact p {
  margin-bottom: 0;
  color: var(--text-muted);
}

.domain-link {
  flex: none;
  padding-bottom: 5px;
  border-bottom: 1px solid var(--accent);
  color: var(--accent-strong);
  font-size: clamp(18px, 2vw, 24px);
  font-weight: 650;
}

.site-footer {
  padding-block: 28px;
  border-top: 1px solid var(--line);
  background: var(--page);
  color: var(--text-muted);
  font-size: 14px;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 28px;
}

.footer-inner p {
  margin-bottom: 0;
}

.footer-inner a:hover,
.footer-inner a:focus-visible {
  color: var(--text);
  text-decoration: underline;
  text-underline-offset: 4px;
}

:focus-visible {
  outline: 3px solid var(--accent-strong);
  outline-offset: 4px;
}

@media (max-width: 820px) {
  :root {
    --shell: min(100% - 32px, 1180px);
  }

  .header-inner {
    min-height: 64px;
  }

  .brand-company,
  .site-nav {
    display: none;
  }

  .hero-inner {
    padding-top: 64px;
  }

  .hero-backdrop {
    background-image:
      linear-gradient(90deg, rgba(5, 12, 22, 0.97) 0%, rgba(5, 12, 22, 0.75) 72%, rgba(5, 12, 22, 0.45) 100%),
      linear-gradient(0deg, rgba(8, 17, 31, 0.82) 0%, rgba(8, 17, 31, 0) 38%),
      url("/assets/hero-abstract.png");
    background-position: 62% center;
  }

  h1 {
    font-size: clamp(46px, 13vw, 68px);
  }

  .section {
    padding-block: 84px;
  }

  .about-layout,
  .principles-layout,
  .information-layout {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .information-heading {
    position: static;
  }

  .contact-inner {
    align-items: start;
    flex-direction: column;
  }
}

@media (max-width: 520px) {
  .hero-actions,
  .footer-inner {
    align-items: stretch;
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .information-list div {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .footer-inner {
    gap: 8px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}