/* Spare Beam — Oblique Beam Chamber
   Signature: hard diagonal light beam cutting a near-black void.
   Distinct from: census form, night desk wire, tractor-feed, purple gradient,
   cream+terracotta, Pay Brief ledger, Hourwise parchment, New Contingent sage bars. */

:root {
  color-scheme: dark;

  --void: #08090C;
  --raised: #12141A;
  --ink: #F4F1EC;
  --muted: #9AA0AB;
  --line: #2A2E38;
  --beam: #F7F2E8;
  --coral: #FF4D3A;
  --ice: #7AD7FF;

  --display: "Unbounded", "Segoe UI", sans-serif;
  --text: "Karla", "Segoe UI", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;

  --shell: min(1080px, calc(100% - 2.5rem));
  --measure: 66ch;
}

*,
*::before,
*::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100vh;
  background: var(--void);
  color: var(--ink);
  font-family: var(--text);
  font-size: 1.0625rem;
  line-height: 1.65;
  font-weight: 400;
}

img, svg { max-width: 100%; display: block; }

a {
  color: var(--ice);
  text-underline-offset: 0.18em;
}

a:hover { color: var(--beam); }

:focus-visible {
  outline: 2px solid var(--coral);
  outline-offset: 3px;
}

.sb-skip {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--coral);
  color: var(--void);
  padding: 0.5rem 1rem;
  z-index: 100;
}

.sb-skip:focus { left: 1rem; top: 1rem; }

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

.sb-top {
  position: relative;
  z-index: 2;
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--void) 88%, transparent);
  backdrop-filter: blur(8px);
}

.sb-top .sb-shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.sb-wordmark {
  font-family: var(--display);
  font-weight: 600;
  font-size: clamp(1.35rem, 2.4vw, 1.75rem);
  letter-spacing: -0.03em;
  color: var(--ink);
  text-decoration: none;
  position: relative;
}

.sb-wordmark::after {
  content: "";
  position: absolute;
  left: -0.15em;
  right: -0.15em;
  top: 42%;
  height: 0.12em;
  background: linear-gradient(90deg, transparent, var(--beam), transparent);
  opacity: 0.55;
  pointer-events: none;
  transform: rotate(-8deg);
}

.sb-nav {
  display: flex;
  gap: 1.15rem;
  flex-wrap: wrap;
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.sb-nav a {
  color: var(--muted);
  text-decoration: none;
}

.sb-nav a[aria-current="page"],
.sb-nav a:hover { color: var(--ink); }

/* —— Hero: Oblique Beam Chamber —— */
.sb-hero {
  position: relative;
  isolation: isolate;
  min-height: min(92vh, 780px);
  display: grid;
  align-items: end;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}

.sb-beam {
  position: absolute;
  inset: -20% -10%;
  z-index: 0;
  pointer-events: none;
  background:
    linear-gradient(
      118deg,
      transparent 0%,
      transparent 38%,
      color-mix(in srgb, var(--beam) 8%, transparent) 44%,
      color-mix(in srgb, var(--beam) 55%, transparent) 49%,
      color-mix(in srgb, var(--ice) 35%, var(--beam)) 50.5%,
      color-mix(in srgb, var(--beam) 55%, transparent) 52%,
      color-mix(in srgb, var(--beam) 8%, transparent) 58%,
      transparent 64%,
      transparent 100%
    );
  animation: sb-beam-drift 14s ease-in-out infinite alternate;
}

.sb-beam::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 40% at 62% 28%, color-mix(in srgb, var(--coral) 18%, transparent), transparent 70%);
  mix-blend-mode: screen;
  animation: sb-flare 9s ease-in-out infinite alternate;
}

.sb-hero__grid {
  position: absolute;
  inset: 0;
  z-index: 0;
  opacity: 0.22;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(180deg, transparent, #000 30%, #000 70%, transparent);
}

.sb-hero__inner {
  position: relative;
  z-index: 1;
  padding: clamp(4rem, 12vh, 7rem) 0 clamp(3rem, 8vh, 5rem);
}

.sb-kicker {
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--coral);
  margin: 0 0 1rem;
}

.sb-hero h1 {
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(2.4rem, 7vw, 4.6rem);
  line-height: 1.02;
  letter-spacing: -0.04em;
  margin: 0 0 1.25rem;
  max-width: 14ch;
  text-wrap: balance;
}

.sb-lede {
  max-width: 42ch;
  color: var(--muted);
  font-size: 1.125rem;
  margin: 0;
}

.sb-cta {
  display: inline-flex;
  margin-top: 1.75rem;
  padding: 0.7rem 1.15rem;
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--void);
  background: var(--beam);
  border: 1px solid var(--beam);
  transition: transform 0.25s ease, background 0.25s ease;
}

.sb-cta:hover {
  background: var(--ice);
  border-color: var(--ice);
  color: var(--void);
  transform: translateY(-2px);
}

@keyframes sb-beam-drift {
  from { transform: translate3d(-1.5%, 0.5%, 0) rotate(-0.4deg); }
  to   { transform: translate3d(1.8%, -0.8%, 0) rotate(0.6deg); }
}

@keyframes sb-flare {
  from { opacity: 0.55; }
  to   { opacity: 1; }
}

@keyframes sb-rise {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

.sb-hero__inner > * {
  animation: sb-rise 0.8s ease both;
}

.sb-hero__inner > *:nth-child(2) { animation-delay: 0.08s; }
.sb-hero__inner > *:nth-child(3) { animation-delay: 0.16s; }
.sb-hero__inner > *:nth-child(4) { animation-delay: 0.24s; }

@media (prefers-reduced-motion: reduce) {
  .sb-beam,
  .sb-beam::before,
  .sb-hero__inner > * {
    animation: none !important;
  }
}

.sb-section {
  padding: clamp(3rem, 8vw, 5.5rem) 0;
  border-bottom: 1px solid var(--line);
}

.sb-section--raised { background: var(--raised); }

.sb-section h2 {
  font-family: var(--display);
  font-weight: 600;
  font-size: clamp(1.6rem, 3.5vw, 2.25rem);
  letter-spacing: -0.03em;
  margin: 0 0 0.75rem;
  max-width: 22ch;
}

.sb-section > .sb-shell > p:first-of-type {
  color: var(--muted);
  max-width: var(--measure);
  margin-top: 0;
}

.sb-rows {
  display: grid;
  gap: 0;
  margin-top: 2rem;
  border-top: 1px solid var(--line);
}

.sb-row {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1.4fr);
  gap: 1.5rem;
  padding: 1.6rem 0;
  border-bottom: 1px solid var(--line);
}

@media (max-width: 720px) {
  .sb-row { grid-template-columns: 1fr; gap: 0.5rem; }
}

.sb-row h3 {
  font-family: var(--display);
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin: 0;
  line-height: 1.25;
}

.sb-row h3 a {
  color: var(--ink);
  text-decoration: none;
}

.sb-row h3 a:hover { color: var(--coral); }

.sb-row p { margin: 0 0 0.5rem; color: var(--muted); }
.sb-row p:last-child { margin-bottom: 0; }

.sb-meta {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  color: color-mix(in srgb, var(--muted) 80%, var(--ice));
}

.sb-defs {
  margin: 2rem 0 0;
  max-width: var(--measure);
}

.sb-defs dt {
  font-family: var(--display);
  font-weight: 600;
  font-size: 1.05rem;
  margin-top: 1.5rem;
  color: var(--ink);
}

.sb-defs dt:first-child { margin-top: 0; }

.sb-defs dd {
  margin: 0.4rem 0 0;
  color: var(--muted);
}

.sb-defs dd p { margin: 0; }

.sb-list {
  margin: 1.25rem 0 0;
  padding: 0;
  list-style: none;
  max-width: var(--measure);
}

.sb-list li {
  position: relative;
  padding: 0.85rem 0 0.85rem 1.35rem;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
}

.sb-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 1.25rem;
  width: 0.65rem;
  height: 2px;
  background: var(--coral);
  transform: rotate(-18deg);
}

.sb-prose {
  max-width: var(--measure);
}

.sb-prose h2 {
  margin-top: 2.25rem;
}

.sb-prose p,
.sb-prose li {
  color: var(--muted);
}

.sb-prose p { margin: 0 0 1rem; }

.sb-stamp {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}

.sb-foot {
  padding: 2.5rem 0 3rem;
  background: var(--void);
  color: var(--muted);
  font-size: 0.92rem;
}

.sb-foot-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem 1.25rem;
  list-style: none;
  margin: 0 0 1.25rem;
  padding: 0;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.sb-foot-links a {
  color: var(--muted);
  text-decoration: none;
}

.sb-foot-links a:hover { color: var(--ink); }

.sb-foot p { margin: 0 0 0.75rem; max-width: 62ch; }

.sb-article-head {
  padding: clamp(3rem, 8vw, 5rem) 0 2rem;
  border-bottom: 1px solid var(--line);
  position: relative;
  overflow: hidden;
}

.sb-article-head .sb-beam {
  opacity: 0.45;
}

.sb-article-body {
  padding: 2.5rem 0 4rem;
}

.sb-article-body .sb-prose h2:first-child { margin-top: 0; }

@media (max-width: 480px) {
  :root { --shell: min(1080px, calc(100% - 1.5rem)); }
  body { font-size: 1rem; }
}