:root {
  --ink: #08101b;
  --panel: rgba(17, 29, 45, .82);
  --panel-strong: #111d2d;
  --line: rgba(154, 203, 236, .18);
  --text: #edf5ff;
  --muted: #a8b9c9;
  --cyan: #7fd8ff;
  --orange: #ffb347;
  --green: #b8efc4;
  --shadow: 0 24px 80px rgba(0, 0, 0, .28);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at 78% 0%, rgba(73, 112, 187, .18), transparent 34rem),
    radial-gradient(circle at 8% 45%, rgba(255, 179, 71, .08), transparent 26rem),
    var(--ink);
  color: var(--text);
  font: 16px/1.65 Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
}
body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  content: "";
  opacity: .2;
  background-image: linear-gradient(rgba(127, 216, 255, .06) 1px, transparent 1px), linear-gradient(90deg, rgba(127, 216, 255, .06) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(to bottom, black, transparent 80%);
}
a { color: inherit; }
a:focus-visible, summary:focus-visible { outline: 3px solid var(--orange); outline-offset: 4px; }
.site-header, .wrap { width: min(1120px, calc(100% - 40px)); margin-inline: auto; }
.site-header { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 24px 0; }
.logo { color: var(--text); font-size: 1.05rem; font-weight: 800; letter-spacing: .22em; text-decoration: none; }
.logo-mark { color: var(--orange); }
.nav-main { display: flex; align-items: center; gap: 20px; }
.nav-main a, .footer-links a { color: var(--muted); font-size: .9rem; text-decoration: none; transition: color .2s ease; }
.nav-main a:hover, .footer-links a:hover { color: var(--text); }
.nav-main .language-link { color: var(--cyan); font-weight: 800; letter-spacing: .08em; }
.nav-main .nav-play { color: var(--ink); background: var(--orange); border-radius: 999px; padding: 8px 14px; font-weight: 800; }
.menu-mobile { display: none; position: relative; }
.menu-mobile summary { cursor: pointer; list-style: none; color: var(--text); font-weight: 700; }
.menu-mobile summary::-webkit-details-marker { display: none; }
.menu-mobile nav { position: absolute; right: 0; top: 34px; z-index: 5; min-width: 220px; padding: 14px; border: 1px solid var(--line); border-radius: 16px; background: rgba(17, 29, 45, .98); box-shadow: var(--shadow); }
.menu-mobile a { display: block; padding: 8px 10px; color: var(--muted); text-decoration: none; }
.menu-mobile a:hover { color: var(--text); }
.eyebrow { color: var(--cyan); font-size: .73rem; font-weight: 800; letter-spacing: .18em; text-transform: uppercase; }
.hero { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(300px, .95fr); align-items: center; gap: 72px; min-height: 650px; padding: 72px 0 84px; }
.hero h1 { max-width: 680px; margin: 18px 0 22px; font-size: clamp(3.4rem, 9vw, 7.8rem); line-height: .86; letter-spacing: -.08em; text-transform: uppercase; }
.hero h1 span { color: var(--orange); }
.hero-lead { max-width: 600px; margin: 0; color: var(--muted); font-size: clamp(1.05rem, 2vw, 1.25rem); }
.actions { display: flex; flex-wrap: wrap; align-items: center; gap: 14px; margin-top: 34px; }
.play-button, .quiet-button { display: inline-flex; align-items: center; justify-content: center; gap: 12px; min-height: 54px; padding: 0 22px; border-radius: 999px; text-decoration: none; font-weight: 800; transition: transform .2s ease, box-shadow .2s ease, background .2s ease; }
.play-button { color: var(--ink); background: var(--orange); box-shadow: 0 16px 34px rgba(255, 179, 71, .2); }
.play-button:hover { transform: translateY(-3px); box-shadow: 0 20px 46px rgba(255, 179, 71, .32); }
.quiet-button { color: var(--text); border: 1px solid var(--line); background: rgba(255, 255, 255, .03); }
.quiet-button:hover { background: rgba(255, 255, 255, .09); }
.hero-art { position: relative; min-height: 420px; display: grid; place-items: center; }
.signal { position: absolute; width: min(82vw, 410px); aspect-ratio: 1; border: 1px solid rgba(127, 216, 255, .28); border-radius: 50%; transform: rotate(-24deg) scaleY(.48); box-shadow: 0 0 80px rgba(127, 216, 255, .12); }
.signal::before, .signal::after { position: absolute; inset: 10%; border: 1px solid rgba(255, 179, 71, .28); border-radius: inherit; content: ""; }
.signal::after { inset: 24%; border-color: rgba(184, 239, 196, .3); }
.core { position: relative; width: 132px; aspect-ratio: 1; display: grid; place-items: center; border: 1px solid rgba(255, 179, 71, .8); border-radius: 50%; background: radial-gradient(circle, rgba(255, 179, 71, .95) 0 7%, rgba(255, 179, 71, .16) 8% 28%, rgba(127, 216, 255, .1) 29% 60%, transparent 61%); box-shadow: 0 0 55px rgba(255, 179, 71, .3); }
.core::after { position: absolute; width: 12px; height: 12px; border-radius: 50%; background: var(--text); box-shadow: 0 0 20px var(--text); content: ""; }
.signal-label { position: absolute; right: 2%; bottom: 12%; color: var(--muted); font-size: .7rem; letter-spacing: .15em; text-transform: uppercase; }
.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; margin: 0 0 100px; border: 1px solid var(--line); background: var(--line); }
.stat { padding: 24px; background: rgba(10, 18, 30, .9); }
.stat strong { display: block; color: var(--orange); font-size: 2.1rem; line-height: 1; }
.stat span { display: block; margin-top: 8px; color: var(--muted); font-size: .78rem; letter-spacing: .12em; text-transform: uppercase; }
.section { padding: 88px 0; border-top: 1px solid var(--line); }
.section-grid { display: grid; grid-template-columns: .72fr 1.28fr; gap: 70px; }
.section h2 { margin: 10px 0 18px; font-size: clamp(2rem, 4vw, 3.6rem); line-height: .98; letter-spacing: -.055em; }
.section h2 em { color: var(--orange); font-style: normal; }
.section p { color: var(--muted); }
.info-cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.info-card { padding: 24px; border: 1px solid var(--line); border-radius: 18px; background: var(--panel); }
.info-card b { display: block; margin-bottom: 8px; color: var(--cyan); font-size: .76rem; letter-spacing: .14em; text-transform: uppercase; }
.info-card h3 { margin: 0 0 8px; font-size: 1.2rem; }
.info-card p { margin: 0; font-size: .94rem; }
.steps { margin: 0; padding: 0; list-style: none; counter-reset: steps; }
.steps li { display: grid; grid-template-columns: 52px 1fr; gap: 18px; align-items: start; padding: 18px 0; border-bottom: 1px solid var(--line); counter-increment: steps; }
.steps li::before { display: grid; place-items: center; width: 38px; height: 38px; border: 1px solid rgba(255, 179, 71, .5); border-radius: 50%; color: var(--orange); content: counter(steps, decimal-leading-zero); font-size: .75rem; font-weight: 800; }
.steps strong { display: block; color: var(--text); }
.steps span { color: var(--muted); }
.cta-panel { display: grid; grid-template-columns: 1fr auto; gap: 30px; align-items: center; margin: 20px 0 100px; padding: 34px; border: 1px solid rgba(255, 179, 71, .32); border-radius: 22px; background: linear-gradient(120deg, rgba(255, 179, 71, .12), rgba(127, 216, 255, .08)); }
.cta-panel h2 { margin: 0; font-size: clamp(1.8rem, 4vw, 3rem); }
.cta-panel p { margin: 8px 0 0; color: var(--muted); }
.site-footer { padding: 34px 0 50px; border-top: 1px solid var(--line); }
.footer-inner { display: flex; justify-content: space-between; gap: 24px; }
.footer-inner p { margin: 0; color: var(--muted); font-size: .86rem; }
.footer-links { display: flex; flex-wrap: wrap; gap: 16px; }
.article-page { min-height: 100vh; }
.article-shell { width: min(820px, calc(100% - 40px)); margin: 0 auto; padding: 72px 0 90px; }
.article-card { padding: clamp(24px, 5vw, 56px); border: 1px solid var(--line); border-radius: 24px; background: rgba(12, 20, 32, .84); box-shadow: var(--shadow); }
.article-card h1 { margin: 0 0 22px; color: var(--orange); font-size: clamp(2.2rem, 6vw, 4rem); line-height: .96; letter-spacing: -.055em; }
.article-card h2 { margin: 36px 0 8px; color: var(--cyan); font-size: 1.35rem; }
.article-card p, .article-card li { color: var(--muted); }
.article-card a { color: var(--cyan); }
.article-card code { padding: 2px 6px; border-radius: 5px; background: rgba(127, 216, 255, .1); color: var(--text); }
.article-card footer { margin-top: 46px; color: var(--muted); font-size: .9rem; }
@media (max-width: 820px) {
  .site-header, .wrap { width: min(100% - 28px, 680px); }
  .nav-main { display: none; }
  .menu-mobile { display: block; }
  .hero { grid-template-columns: 1fr; gap: 24px; min-height: 0; padding: 56px 0 70px; }
  .hero-art { min-height: 300px; order: -1; }
  .signal { width: min(76vw, 330px); }
  .core { width: 100px; }
  .stats { grid-template-columns: 1fr; margin-bottom: 56px; }
  .section { padding: 62px 0; }
  .section-grid { grid-template-columns: 1fr; gap: 28px; }
  .info-cards { grid-template-columns: 1fr; }
  .cta-panel { grid-template-columns: 1fr; margin-bottom: 60px; }
  .footer-inner { flex-direction: column; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; }
}