:root {
  --bg: #080B0B;
  --accent: #CAFF17;
  --text: #F4F6F2;
  --muted: #7E8884;
  --line: #1D2522;
  --header-height: 72px;
  --max-width: 1200px;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--bg); }
body {
  margin: 0;
  color: var(--text);
  background: var(--bg);
  font-family: Inter, "SF Pro Display", "Segoe UI", "PingFang SC", "PingFang TC",
    "Microsoft YaHei", "Noto Sans CJK SC", "Noto Sans CJK TC", Arial, sans-serif;
  line-height: 1.6;
}
a { color: inherit; }
button, a { min-width: 44px; min-height: 44px; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 4px; }
.contact-band a:focus-visible, .site-footer a:focus-visible { outline-color: var(--bg); }
[id] { scroll-margin-top: calc(var(--header-height) + 20px); }
.skip-link { position: fixed; top: -80px; left: 16px; z-index: 100; padding: 12px 16px; color: var(--bg); background: var(--accent); }
.skip-link:focus { top: 16px; }
.site-header { position: sticky; top: 0; z-index: 20; border-bottom: 1px solid var(--line); background: rgba(8, 11, 11, .92); backdrop-filter: blur(16px); }
.nav-shell, .section-shell, .footer-shell { width: min(calc(100% - 40px), var(--max-width)); margin-inline: auto; }
.nav-shell { min-height: var(--header-height); display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 800; letter-spacing: .04em; }
.brand img { width: 34px; height: 34px; }
.primary-nav, .locale-nav { display: flex; align-items: center; gap: 18px; }
.primary-nav a, .locale-nav a { display: inline-flex; align-items: center; text-decoration: none; font: 700 .74rem/1 ui-monospace, monospace; letter-spacing: .08em; }
.primary-nav a[aria-current="location"] { color: var(--accent); }
.nav-group { display: flex; align-items: center; gap: 26px; }
.hero { min-height: calc(100svh - var(--header-height)); display: grid; grid-template-columns: 1.08fr .92fr; border-bottom: 1px solid var(--line); background-image: linear-gradient(rgba(202,255,23,.045) 1px, transparent 1px), linear-gradient(90deg, rgba(202,255,23,.045) 1px, transparent 1px); background-size: 52px 52px; }
.hero-copy, .hero-visual { display: flex; flex-direction: column; justify-content: center; padding-block: clamp(56px, 8vw, 120px); }
.hero-copy { padding-left: max(24px, calc((100vw - var(--max-width)) / 2)); padding-right: clamp(24px, 4vw, 72px); }
.hero-visual { padding-left: clamp(24px, 4vw, 72px); padding-right: max(24px, calc((100vw - var(--max-width)) / 2)); }
.hero-copy, .hero-visual { min-width: 0; }
.eyebrow { margin: 0 0 20px; color: var(--accent); font: 700 .72rem/1.3 ui-monospace, monospace; letter-spacing: .14em; text-transform: uppercase; }
h1, h2, h3, p { margin-top: 0; }
h1 { max-width: 760px; margin-bottom: 24px; font-size: clamp(3.5rem, 9vw, 8rem); line-height: .87; letter-spacing: -.07em; }
h2 { font-size: clamp(2.2rem, 5vw, 4.5rem); line-height: .98; letter-spacing: -.055em; }
.accent { color: var(--accent); }
h1 .accent { display: block; }
.lead { max-width: 680px; color: var(--muted); font-size: clamp(1rem, 1.6vw, 1.25rem); }
.lead { overflow-wrap: anywhere; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.button { display: inline-flex; align-items: center; justify-content: center; padding: 12px 18px; border: 1px solid var(--accent); text-decoration: none; font: 700 .72rem/1 ui-monospace, monospace; letter-spacing: .08em; }
.button-primary { color: var(--bg); background: var(--accent); }
.application-console { width: min(100%, 500px); border: 1px solid #303936; background: rgba(10, 14, 13, .94); box-shadow: 0 30px 80px rgba(0, 0, 0, .32); }
.console-head, .console-row { display: grid; align-items: center; gap: 16px; padding: 16px 18px; border-bottom: 1px solid var(--line); }
.console-head { grid-template-columns: 1fr auto; color: var(--muted); font: 700 .68rem/1 ui-monospace, monospace; }
.console-row { grid-template-columns: 34px 1fr auto; }
.console-row:last-child { border-bottom: 0; }
.console-row small, .status { color: var(--muted); font: 600 .65rem/1.5 ui-monospace, monospace; }
.console-row small { display: block; }
.status { color: var(--accent); }
.content-section { border-bottom: 1px solid var(--line); }
.section-shell { padding-block: clamp(72px, 10vw, 140px); }
.two-column { display: grid; grid-template-columns: .72fr 1.28fr; gap: clamp(32px, 7vw, 100px); }
.principles, .modes, .application-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; margin-top: 48px; border: 1px solid var(--line); background: var(--line); }
.principle, .mode, .application-card { padding: clamp(24px, 4vw, 48px); background: var(--bg); }
.principle strong, .mode strong { color: var(--accent); font: 700 .72rem/1.3 ui-monospace, monospace; letter-spacing: .08em; }
.modes { grid-template-columns: repeat(2, 1fr); }
.application-grid { grid-template-columns: repeat(2, 1fr); }
.application-card ul { margin: 24px 0 0; padding-left: 20px; color: var(--muted); }
.contact-band { color: var(--bg); background: var(--accent); }
.contact-band .section-shell { display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.contact-band .eyebrow { color: #465800; }
.contact-link { border-color: var(--bg); }
.site-footer { border-top: 1px solid rgba(8, 11, 11, .25); background: var(--accent); color: var(--bg); }
.site-footer a { display: inline-flex; align-items: center; min-width: 44px; min-height: 44px; }
.footer-shell { min-height: 74px; display: flex; align-items: center; justify-content: space-between; gap: 20px; font: 700 .68rem/1.3 ui-monospace, monospace; }
.js .reveal { opacity: 0; transform: translateY(18px); transition: opacity .45s ease, transform .45s ease; }
.js .reveal.is-visible { opacity: 1; transform: none; }

@media (max-width: 900px) {
  .hero, .two-column { grid-template-columns: 1fr; }
  .hero-copy, .hero-visual { padding-inline: 24px; }
  .hero-visual { padding-top: 0; }
  .principles { grid-template-columns: 1fr; }
}

@media (max-width: 760px) {
  :root { --header-height: 118px; }
  .nav-shell { width: min(calc(100% - 24px), var(--max-width)); gap: 10px; }
  .nav-shell { flex-wrap: wrap; padding-block: 10px; }
  .brand span { display: none; }
  .nav-group { gap: 10px; }
  .nav-group { width: 100%; justify-content: space-between; }
  .primary-nav { gap: 5px; }
  .primary-nav a, .locale-nav a { min-width: 0; }
  .primary-nav a { padding-inline: 5px; font-size: .59rem; }
  .locale-nav { gap: 4px; }
  .locale-nav a { padding-inline: 4px; }
  .hero-copy, .hero-visual { padding-inline: 20px; }
  h1 { font-size: clamp(2.9rem, 13vw, 5.4rem); }
  .modes, .application-grid { grid-template-columns: 1fr; }
  .contact-band .section-shell, .footer-shell { align-items: flex-start; flex-direction: column; }
  .footer-shell { padding-block: 24px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
  .js .reveal { opacity: 1; transform: none; }
}