:root {
  color-scheme: light;
  --ink: #171815;
  --paper: #f4f5f0;
  --muted: #686b63;
  --line: #cfd1ca;
  --lime: #baff3c;
  --coral: #ff6c4b;
  --white: #ffffff;
  --page: min(1180px, calc(100% - 48px));
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  letter-spacing: 0;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

.site-header {
  height: 68px;
  position: fixed;
  z-index: 30;
  top: 0;
  left: 0;
  right: 0;
  color: var(--white);
  background: rgba(23, 24, 21, .92);
  border-bottom: 1px solid rgba(255, 255, 255, .14);
  backdrop-filter: blur(12px);
}

.header-inner {
  width: var(--page);
  height: 100%;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--white);
  text-decoration: none;
  font-weight: 760;
}

.brand-mark {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  color: var(--ink);
  background: var(--lime);
  font: 800 15px/1 ui-monospace, SFMono-Regular, Consolas, monospace;
}

.brand small {
  color: #aeb1a8;
  font-size: 11px;
  font-weight: 620;
  text-transform: uppercase;
}

.nav {
  display: flex;
  align-items: center;
  gap: 30px;
}

.nav a {
  color: #d8dad3;
  text-decoration: none;
  font-size: 14px;
}

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

.hero {
  min-height: min(760px, 82vh);
  position: relative;
  display: flex;
  align-items: center;
  overflow: hidden;
  color: var(--white);
  background: var(--ink);
}

.hero-media {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.hero-shade {
  position: absolute;
  inset: 0 auto 0 0;
  width: 51%;
  background: rgba(23, 24, 21, .88);
  border-right: 1px solid rgba(255, 255, 255, .12);
}

.hero-inner {
  position: relative;
  z-index: 2;
  width: var(--page);
  margin: 68px auto 0;
  padding: 84px 0 76px;
}

.eyebrow {
  margin: 0 0 24px;
  color: var(--lime);
  font: 700 13px/1.2 ui-monospace, SFMono-Regular, Consolas, monospace;
  text-transform: uppercase;
}

h1, h2, h3, p { letter-spacing: 0; }

h1 {
  max-width: 580px;
  margin: 0;
  font-size: 72px;
  line-height: 1.06;
  font-weight: 790;
}

.hero-copy {
  max-width: 500px;
  margin: 28px 0 0;
  color: #d4d6ce;
  font-size: 19px;
}

.hero-link {
  width: fit-content;
  margin-top: 40px;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--ink);
  background: var(--lime);
  padding: 13px 18px;
  text-decoration: none;
  font-weight: 740;
}

.hero-link span { font-size: 20px; line-height: 1; }

.hero-link:hover, .hero-link:focus-visible { background: var(--white); }

.signal-band {
  color: var(--paper);
  background: var(--coral);
}

.signal-inner {
  width: var(--page);
  min-height: 92px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  align-items: center;
}

.signal-title {
  font-weight: 780;
  font-size: 19px;
}

.signal-item {
  min-height: 92px;
  padding-left: 24px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  border-left: 1px solid rgba(255, 255, 255, .35);
}

.signal-item b { font-size: 16px; }
.signal-item span { font-size: 12px; opacity: .78; }

.section {
  width: var(--page);
  margin: 0 auto;
  padding: 112px 0;
}

.section-head {
  display: grid;
  grid-template-columns: 1fr 1.35fr;
  gap: 70px;
  align-items: start;
}

.kicker {
  margin: 0 0 18px;
  color: var(--coral);
  font: 700 13px/1.2 ui-monospace, SFMono-Regular, Consolas, monospace;
  text-transform: uppercase;
}

h2 {
  margin: 0;
  font-size: 44px;
  line-height: 1.18;
  font-weight: 780;
}

.section-lead {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 18px;
}

.principles {
  margin-top: 72px;
  border-top: 1px solid var(--ink);
}

.principle {
  display: grid;
  grid-template-columns: 90px 1fr 1.2fr;
  gap: 34px;
  padding: 30px 0;
  border-bottom: 1px solid var(--line);
  align-items: center;
}

.principle-num {
  color: var(--muted);
  font: 600 13px/1 ui-monospace, SFMono-Regular, Consolas, monospace;
}

.principle h3 { margin: 0; font-size: 22px; }
.principle p { margin: 0; color: var(--muted); }

.dark-section {
  color: var(--paper);
  background: var(--ink);
}

.dark-inner {
  width: var(--page);
  margin: 0 auto;
  padding: 110px 0;
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  gap: 100px;
  align-items: end;
}

.dark-inner h2 { max-width: 650px; }
.dark-inner p { margin: 0; color: #b8bbb2; font-size: 18px; }

.accent-line {
  width: 100%;
  height: 10px;
  margin-top: 48px;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
}

.accent-line i { display: block; background: var(--lime); }
.accent-line i:nth-child(2) { background: var(--coral); }
.accent-line i:nth-child(3) { background: #f3ca52; }

.site-footer {
  background: #0e0f0d;
  color: #b7bab1;
  border-top: 1px solid #33352f;
}

.footer-inner {
  width: var(--page);
  min-height: 118px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.footer-brand { color: var(--white); font-weight: 740; }

.legal {
  display: flex;
  align-items: center;
  gap: 24px;
  font-size: 13px;
}

.legal a { color: #cfd1ca; text-decoration: none; }
.legal a:hover, .legal a:focus-visible { color: var(--lime); }

.reveal {
  opacity: 1;
  transform: none;
}

.js .reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .55s ease, transform .55s ease;
}

.js .reveal.is-visible { opacity: 1; transform: translateY(0); }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js .reveal { opacity: 1; transform: none; transition: none; }
}

@media (max-width: 900px) {
  :root { --page: min(100% - 36px, 720px); }
  .nav a:not(:last-child) { display: none; }
  .brand small { display: none; }
  .hero { min-height: 730px; align-items: flex-end; }
  .hero-media { object-position: 67% center; opacity: .58; }
  .hero-shade { width: 100%; background: rgba(23, 24, 21, .62); border: 0; }
  .hero-inner { padding: 130px 0 72px; }
  h1 { font-size: 54px; }
  .hero-copy { font-size: 17px; }
  .signal-inner { grid-template-columns: 1fr; padding: 24px 0; }
  .signal-title { padding: 0 0 18px; }
  .signal-item { min-height: 60px; border-left: 0; border-top: 1px solid rgba(255,255,255,.3); padding: 12px 0; }
  .section { padding: 82px 0; }
  .section-head, .dark-inner { grid-template-columns: 1fr; gap: 32px; }
  .principle { grid-template-columns: 54px 1fr; gap: 20px; }
  .principle p { grid-column: 2; }
  .dark-inner { padding: 82px 0; }
  .footer-inner { padding: 28px 0; align-items: flex-start; flex-direction: column; }
  .legal { align-items: flex-start; flex-direction: column; gap: 8px; }
}

@media (max-width: 520px) {
  :root { --page: calc(100% - 28px); }
  .site-header { height: 62px; }
  .nav { gap: 12px; }
  .nav a { font-size: 13px; }
  .hero { min-height: 690px; }
  .hero-inner { margin-top: 62px; padding-top: 106px; }
  h1 { font-size: 46px; }
  h2 { font-size: 34px; }
  .hero-copy { max-width: 92%; }
  .principles { margin-top: 50px; }
  .principle { grid-template-columns: 42px 1fr; padding: 24px 0; }
}