:root {
  --void: #12161C;
  --panel: #1A2029;
  --ink: #F2EDE4;
  --muted: #A39E94;
  --line: #2C3440;
  --accent: #FF6B2C;
  --accent-deep: #D4521A;
  --cobalt: #4B7BEC;
  --cobalt-soft: rgba(75, 123, 236, 0.18);
  --display: "Dela Gothic One", Impact, sans-serif;
  --body: "Source Serif 4", Georgia, serif;
  --mono: "JetBrains Mono", ui-monospace, monospace;
  --shell: min(68rem, calc(100% - 2.5rem));
  --rise: 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background:
    repeating-linear-gradient(
      90deg,
      transparent 0,
      transparent 11px,
      rgba(255, 107, 44, 0.04) 11px,
      rgba(255, 107, 44, 0.04) 12px
    ),
    radial-gradient(1200px 600px at 10% -10%, rgba(75, 123, 236, 0.22), transparent 55%),
    var(--void);
  color: var(--ink);
  font-family: var(--body);
  font-size: 1.05rem;
  line-height: 1.65;
}
img { max-width: 100%; display: block; }
a { color: var(--cobalt); text-underline-offset: 0.18em; }
a:hover { color: var(--accent); }
.skip {
  position: absolute; left: -999px; top: 0;
  background: var(--accent); color: #111; padding: 0.6rem 1rem; z-index: 99;
}
.skip:focus { left: 1rem; top: 1rem; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.shell { width: var(--shell); margin-inline: auto; }

.top {
  position: sticky; top: 0; z-index: 40;
  background: rgba(18, 22, 28, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.top__row {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; padding: 0.85rem 0 0.35rem;
}
.brand {
  font-family: var(--display);
  font-size: 1.15rem;
  letter-spacing: 0.02em;
  color: var(--ink);
  text-decoration: none;
  display: inline-flex; align-items: center; gap: 0.55rem;
}
.brand__mark {
  width: 1.35rem; height: 1.35rem;
  background: linear-gradient(135deg, var(--accent), var(--cobalt));
  clip-path: polygon(0 20%, 100% 0, 100% 80%, 0 100%);
}
.top__meta {
  font-family: var(--mono); font-size: 0.72rem;
  color: var(--muted); letter-spacing: 0.06em; text-transform: uppercase;
}
.nav {
  display: flex; gap: 1.25rem; padding: 0.35rem 0 0.9rem;
  font-family: var(--mono); font-size: 0.78rem; letter-spacing: 0.04em;
}
.nav a { color: var(--muted); text-decoration: none; }
.nav a:hover, .nav a[aria-current="page"] { color: var(--accent); }

.hero {
  position: relative;
  padding: clamp(3.5rem, 10vw, 6.5rem) 0 clamp(2.5rem, 6vw, 4rem);
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}
.hero__stripes {
  position: absolute; inset: 0;
  background:
    linear-gradient(180deg, transparent 0%, transparent 42%, rgba(255,107,44,0.08) 42%, rgba(255,107,44,0.08) 48%, transparent 48%),
    linear-gradient(180deg, transparent 0%, transparent 58%, rgba(75,123,236,0.12) 58%, rgba(75,123,236,0.12) 64%, transparent 64%);
  pointer-events: none;
  animation: stripe-drift 14s linear infinite;
}
@keyframes stripe-drift {
  from { transform: translateX(0); }
  to { transform: translateX(-12px); }
}
@media (prefers-reduced-motion: reduce) {
  .hero__stripes { animation: none; }
  .mag-scan__head, .rise { animation: none !important; }
}
.brand-hero {
  font-family: var(--display);
  font-size: clamp(2.4rem, 8vw, 4.6rem);
  line-height: 0.95;
  margin: 0 0 1.1rem;
  color: var(--ink);
  max-width: 14ch;
}
.hero h1 {
  font-family: var(--body);
  font-weight: 600;
  font-size: clamp(1.15rem, 2.4vw, 1.45rem);
  line-height: 1.35;
  max-width: 38rem;
  margin: 0 0 1rem;
}
.hero__lead {
  max-width: 36rem;
  color: var(--muted);
  margin: 0 0 1.5rem;
}
.hero__ctas { display: flex; flex-wrap: wrap; gap: 0.75rem; }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 2.75rem; padding: 0.55rem 1.15rem;
  font-family: var(--mono); font-size: 0.78rem; letter-spacing: 0.05em;
  text-decoration: none; text-transform: uppercase;
  background: var(--accent); color: #111; border: 1px solid var(--accent);
}
.btn:hover { background: var(--accent-deep); color: #fff; }
.btn--ghost {
  background: transparent; color: var(--ink); border-color: var(--line);
}
.btn--ghost:hover { border-color: var(--cobalt); color: var(--cobalt); }

.block { padding: clamp(2.5rem, 6vw, 4.5rem) 0; border-bottom: 1px solid var(--line); }
.block__head { max-width: 40rem; margin-bottom: 1.75rem; }
.eyebrow {
  font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--accent); margin: 0 0 0.6rem;
}
.block h2 {
  font-family: var(--display);
  font-size: clamp(1.5rem, 3.5vw, 2.2rem);
  line-height: 1.05; margin: 0 0 0.75rem; font-weight: 400;
}
.block__head p { margin: 0; color: var(--muted); }

.mag-stage {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 1.25rem;
  align-items: stretch;
}
@media (max-width: 860px) {
  .mag-stage { grid-template-columns: 1fr; }
}
.mag-canvas {
  background: var(--panel);
  border: 1px solid var(--line);
  padding: 1.25rem;
  position: relative;
  overflow: hidden;
  min-height: 14rem;
}
.mag-strip {
  height: 4.5rem;
  margin: 2rem 0 1rem;
  border-radius: 0.35rem;
  background:
    repeating-linear-gradient(
      90deg,
      #0a0c10 0 4px,
      #f2ede4 4px 6px,
      #0a0c10 6px 9px,
      #ff6b2c 9px 11px,
      #0a0c10 11px 15px,
      #4b7bec 15px 17px
    );
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.08);
  position: relative;
}
.mag-scan__head {
  position: absolute; top: 0; bottom: 0; width: 3px;
  background: var(--accent);
  box-shadow: 0 0 18px rgba(255, 107, 44, 0.8);
  animation: scan 3.2s ease-in-out infinite;
}
@keyframes scan {
  0%, 100% { left: 6%; }
  50% { left: 92%; }
}
.mag-tracks {
  display: flex; flex-wrap: wrap; gap: 0.5rem;
}
.mag-track {
  font-family: var(--mono); font-size: 0.72rem;
  padding: 0.45rem 0.7rem;
  border: 1px solid var(--line);
  background: transparent; color: var(--ink);
  cursor: pointer;
}
.mag-track[aria-pressed="true"], .mag-track:hover {
  border-color: var(--accent); color: var(--accent);
}
.mag-panel {
  background: var(--cobalt-soft);
  border: 1px solid rgba(75, 123, 236, 0.35);
  padding: 1.25rem;
}
.mag-panel__label {
  font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--cobalt); margin: 0 0 0.5rem;
}
.mag-panel h3 {
  font-family: var(--display); font-size: 1.35rem; margin: 0 0 0.6rem; font-weight: 400;
}
.mag-panel p { margin: 0; color: var(--muted); font-size: 0.98rem; }
.mag-panel__hint {
  margin-top: 1rem !important;
  font-family: var(--mono); font-size: 0.68rem; color: var(--accent);
}

.library { display: grid; gap: 1rem; }
.lib-item {
  display: grid; grid-template-columns: auto 1fr; gap: 1rem;
  padding: 1.1rem 1.15rem;
  border-left: 3px solid var(--accent);
  background: rgba(26, 32, 41, 0.7);
  text-decoration: none; color: inherit;
  transition: transform var(--rise), border-color var(--rise);
}
.lib-item:hover { transform: translateX(4px); border-color: var(--cobalt); color: inherit; }
.lib-item__idx {
  font-family: var(--mono); font-size: 0.72rem; color: var(--accent);
  padding-top: 0.25rem;
}
.lib-item h3 {
  font-family: var(--display); font-size: 1.2rem; margin: 0 0 0.35rem; font-weight: 400; line-height: 1.15;
}
.lib-item p { margin: 0; color: var(--muted); font-size: 0.95rem; }

.standards {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem;
}
@media (max-width: 700px) { .standards { grid-template-columns: 1fr; } }
.std {
  padding: 1.1rem; border: 1px solid var(--line); background: var(--panel);
}
.std h3 {
  font-family: var(--display); font-size: 1.05rem; margin: 0 0 0.45rem; font-weight: 400;
}
.std p { margin: 0; color: var(--muted); font-size: 0.95rem; }

.not-list {
  list-style: none; padding: 0; margin: 0;
  display: grid; gap: 0.65rem;
}
.not-list li {
  padding: 0.85rem 1rem;
  border: 1px solid var(--line);
  border-left: 3px solid var(--cobalt);
  background: var(--panel);
  color: var(--muted);
}

.faq details {
  border-bottom: 1px solid var(--line);
  padding: 0.9rem 0;
}
.faq summary {
  font-family: var(--display); font-size: 1.05rem; cursor: pointer; list-style: none;
}
.faq summary::-webkit-details-marker { display: none; }
.faq details p { color: var(--muted); margin: 0.65rem 0 0; }

.prose { max-width: 42rem; }
.prose h1, .prose h2, .prose h3 {
  font-family: var(--display); font-weight: 400; line-height: 1.1;
}
.prose h1 { font-size: clamp(1.8rem, 4vw, 2.6rem); margin: 0 0 0.75rem; }
.prose h2 { font-size: 1.45rem; margin: 2rem 0 0.7rem; }
.prose h3 { font-size: 1.15rem; margin: 1.4rem 0 0.5rem; }
.article__head { padding: 2.5rem 0 0.5rem; border-bottom: 1px solid var(--line); }
.article__meta {
  font-family: var(--mono); font-size: 0.72rem; color: var(--muted);
  letter-spacing: 0.04em; text-transform: uppercase;
}
.prose ul { padding-left: 1.2rem; }
.prose li { margin: 0.35rem 0; color: var(--muted); }

.foot {
  padding: 2.5rem 0 3rem;
  background: #0c1016;
  border-top: 1px solid var(--line);
}
.foot__grid {
  display: flex; flex-wrap: wrap; gap: 1.5rem;
  justify-content: space-between; align-items: flex-start;
}
.foot nav { display: flex; flex-wrap: wrap; gap: 0.85rem 1.1rem; }
.foot nav a {
  font-family: var(--mono); font-size: 0.72rem; color: var(--muted); text-decoration: none;
}
.foot nav a:hover { color: var(--accent); }
.foot__note {
  width: 100%; margin: 1.25rem 0 0;
  font-family: var(--mono); font-size: 0.68rem; color: var(--muted);
}

.rise { animation: rise-in 0.7s both; }
@keyframes rise-in {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: none; }
}