:root {
  --paper:        #fafaf7;
  --paper-warm:   #f3f1ea;
  --paper-deep:   #ebe8de;
  --ink:          #1a3a52;
  --ink-soft:     #3a5670;
  --ink-faint:    #6b7682;
  --rust:         #b85c2f;
  --rust-deep:    #8e4321;
  --rule:         #e2ddcd;
  --rule-soft:    #ecead8;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--paper);
  color: var(--ink);
  font-family: "Inter Tight", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  background-image:
    linear-gradient(to right,  rgba(26,58,82,0.035) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(26,58,82,0.035) 1px, transparent 1px);
  background-size:
    120px 120px,
    120px 120px;
  background-position: 0 0;
}

a { color: var(--ink); text-decoration: none; border-bottom: 1px solid var(--rule); transition: border-color .15s, color .15s; }
a:hover { color: var(--rust); border-color: var(--rust); }
.mono { font-family: "JetBrains Mono", ui-monospace, Menlo, monospace; }

/* ---------- LAYOUT SHELL ---------- */
.page {
  position: relative;
  z-index: 1;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 56px;
}

/* ---------- TOPBAR ---------- */
.topbar {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding: 28px 0 22px;
  border-bottom: 1px solid var(--rule);
  position: relative;
}
.topbar::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -4px;
  height: 1px;
  background: var(--rule-soft);
}
.wordmark {
  font-family: "Source Serif 4", "Source Serif Pro", Georgia, serif;
  font-size: 22px;
  font-weight: 500;
  letter-spacing: -0.005em;
  border: none;
  display: flex;
  align-items: baseline;
  gap: 14px;
  color: var(--ink);
}
.wordmark .glyph {
  display: inline-block;
  width: 28px; height: 28px;
  transform: translateY(6px);
  flex: 0 0 28px;
  border-radius: 6px;
  object-fit: cover;
}
.wordmark em {
  font-style: normal;
  color: var(--ink-faint);
  font-size: 12px;
  font-family: "JetBrains Mono", monospace;
  font-weight: 400;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.topnav {
  display: flex;
  gap: 28px;
  font-family: "JetBrains Mono", monospace;
  font-size: 11.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.topnav a { border: none; color: var(--ink-soft); }
.topnav a:hover { color: var(--rust); }

/* ---------- BEARING RULE (section divider) ---------- */
.bearing {
  display: flex;
  align-items: center;
  gap: 14px;
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin: 88px 0 36px;
}
.bearing::before, .bearing::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--rule);
}
.bearing .tick { color: var(--rust); }
.bearing .num { color: var(--ink-soft); }

/* ---------- HERO ---------- */
.hero {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  grid-template-areas:
    "banner banner"
    "left   right";
  gap: 36px 64px;
  padding: 64px 0 36px;
  position: relative;
}
.hero-banner { grid-area: banner; }
.hero-left   { grid-area: left; }
.hero-right  { grid-area: right; }
.hero-meta {
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 24px;
  display: flex;
  gap: 14px;
  align-items: baseline;
}
.hero-meta .dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--rust);
  display: inline-block;
  transform: translateY(-2px);
  flex: 0 0 6px;
}
.hero-meta-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 14px;
  align-items: baseline;
}
.hero-meta-list > span { white-space: nowrap; }
.hero-meta-list b {
  color: var(--rust);
  font-weight: 500;
  margin-right: 6px;
}
.hero-meta-list .sep { color: var(--rule); }
h1.hero-title {
  font-family: "Source Serif 4", "Source Serif Pro", "EB Garamond", Georgia, serif;
  font-weight: 400;
  font-size: clamp(36px, 4.4vw, 66px);
  line-height: 1.06;
  letter-spacing: -0.012em;
  margin: 0;
  color: var(--ink);
  text-wrap: balance;
}
.hero-lede {
  font-family: "Inter Tight", sans-serif;
  font-size: 17px;
  line-height: 1.55;
  color: var(--ink-soft);
  max-width: 44ch;
  margin: 0 0 32px;
  text-wrap: pretty;
}
.hero-lede strong {
  color: var(--ink);
  font-weight: 600;
}
.hero-cta {
  display: flex;
  gap: 20px;
  align-items: center;
  flex-wrap: wrap;
}
.btn {
  font-family: "JetBrains Mono", monospace;
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 13px 22px;
  border: 1px solid var(--ink);
  color: var(--ink);
  background: transparent;
  cursor: pointer;
  transition: all .15s;
}
.btn:hover { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.btn.primary { background: var(--ink); color: var(--paper); }
.btn.primary:hover { background: var(--rust); border-color: var(--rust); }
.btn .arrow { display: inline-block; margin-left: 8px; transition: transform .15s; }
.btn:hover .arrow { transform: translateX(3px); }
/* ---------- BULLETIN CARD (hero right) ---------- */
.bulletin-frame {
  position: relative;
}
.bulletin-frame::before {
  content: "";
  position: absolute;
  top: -10px; left: -10px;
  width: 18px; height: 18px;
  border-top: 1px solid var(--ink);
  border-left: 1px solid var(--ink);
}
.bulletin-frame::after {
  content: "";
  position: absolute;
  bottom: -10px; right: -10px;
  width: 18px; height: 18px;
  border-bottom: 1px solid var(--ink);
  border-right: 1px solid var(--ink);
}
.bulletin {
  background: var(--paper-warm);
  border: 1px solid var(--rule);
  padding: 22px 26px 24px;
  font-family: "JetBrains Mono", monospace;
  font-size: 13px;
  line-height: 1.65;
  color: var(--ink);
  position: relative;
  box-shadow:
    0 1px 0 var(--paper-deep),
    0 14px 28px -20px rgba(26, 58, 82, 0.18);
}
.bulletin-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding-bottom: 14px;
  margin-bottom: 16px;
  border-bottom: 1px dashed var(--rule);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.bulletin-head .label { color: var(--ink-soft); }
.bulletin-head .station { color: var(--rust); font-weight: 600; }
.bulletin pre {
  margin: 0;
  white-space: pre-wrap;
  word-break: break-word;
  font-family: inherit;
  font-size: 13px;
  line-height: 1.7;
}
.bulletin .zczc { color: var(--rust); font-weight: 600; }
.bulletin .key   { color: var(--ink-soft); }
.bulletin .num   { font-variant-numeric: tabular-nums; }
.bulletin-foot {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px dashed var(--rule);
  display: flex;
  justify-content: space-between;
  font-size: 10.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
/* ---------- COMPASS ROSE (decoration) ---------- */
.rose {
  position: absolute;
  width: 160px; height: 160px;
  opacity: 0.06;
  pointer-events: none;
}
.rose.tr { top: 60px; right: -40px; }

/* ---------- SCREENSHOT SHOWCASE ---------- */
.showcase {
  margin: 96px 0 0;
  position: relative;
}
.showcase-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 22px;
  gap: 24px;
  flex-wrap: wrap;
}
.showcase-header h2 {
  font-family: "Source Serif 4", "Source Serif Pro", Georgia, serif;
  font-weight: 400;
  font-size: 30px;
  margin: 0;
  letter-spacing: -0.012em;
  color: var(--ink);
}
.showcase-header .meta {
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.showcase-shot {
  position: relative;
  padding: 18px;
  background: var(--paper-warm);
  border: 1px solid var(--rule);
  box-shadow:
    0 1px 0 var(--paper-deep),
    0 24px 60px -32px rgba(26, 58, 82, 0.2);
}
.showcase-shot::before, .showcase-shot::after {
  content: "";
  position: absolute;
  width: 22px; height: 22px;
  pointer-events: none;
}
.showcase-shot::before {
  top: -1px; left: -1px;
  border-top: 1px solid var(--ink);
  border-left: 1px solid var(--ink);
  transform: translate(-8px, -8px);
}
.showcase-shot::after {
  bottom: -1px; right: -1px;
  border-bottom: 1px solid var(--ink);
  border-right: 1px solid var(--ink);
  transform: translate(8px, 8px);
}
.showcase-shot img {
  display: block;
  width: 100%;
  height: auto;
}
/* ---------- WEFAX INSET ---------- */
.wefax-inset {
  margin: 8px 0 18px;
  padding: 0;
}
.wefax-frame {
  background: #f6efd9;
  padding: 6px;
  border: 1px solid var(--rule);
  box-shadow: 0 1px 0 var(--paper-deep);
  position: relative;
}
.wefax-frame img {
  display: block;
  width: 100%;
  height: auto;
  filter: sepia(0.12) contrast(1.05);
  mix-blend-mode: multiply;
}
.wefax-inset figcaption {
  display: flex;
  justify-content: space-between;
  margin-top: 8px;
  font-family: "JetBrains Mono", monospace;
  font-size: 10.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-faint);
  gap: 12px;
}
.wefax-inset figcaption .k { color: var(--rust); }
.wefax-inset figcaption .v { color: var(--ink-soft); text-align: right; }

/* ---------- RTTY INSET ---------- */
.rtty-inset {
  background: var(--ink);
  color: #e8dfc6;
  padding: 14px 16px 16px;
  margin: 8px 0 18px;
  font-family: "JetBrains Mono", monospace;
  font-size: 11.5px;
  line-height: 1.6;
}
.rtty-inset-head {
  display: flex;
  justify-content: space-between;
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: #94a1ab;
  padding-bottom: 8px;
  margin-bottom: 8px;
  border-bottom: 1px dashed #2d4d65;
}
.rtty-inset pre {
  margin: 0;
  white-space: pre;
  overflow-x: auto;
}
.rtty-inset .caret {
  color: var(--rust);
  animation: blink 1.1s steps(1) infinite;
  display: inline-block;
  margin-left: 2px;
}
@keyframes blink {
  0%, 50% { opacity: 1; }
  51%, 100% { opacity: 0; }
}

/* ---------- WHAT IT DECODES ---------- */
.decodes {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}
.decode-col {
  padding: 36px 32px 40px;
  border-right: 1px solid var(--rule);
  position: relative;
}
.decode-col:last-child { border-right: none; }
.decode-col .freq {
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--rust);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.decode-col .freq::before {
  content: "";
  width: 22px; height: 1px;
  background: var(--rust);
}
.decode-col h3 {
  font-family: "Inter Tight", sans-serif;
  font-weight: 600;
  font-size: 22px;
  margin: 0 0 6px;
  letter-spacing: -0.02em;
  color: var(--ink);
}
.decode-col .sub {
  color: var(--ink-faint);
  font-size: 13px;
  margin-bottom: 18px;
  font-family: "JetBrains Mono", monospace;
  letter-spacing: 0.02em;
}
.decode-col p {
  font-size: 14.5px;
  line-height: 1.55;
  color: var(--ink-soft);
  margin: 0 0 18px;
  text-wrap: pretty;
}
.decode-col .specs {
  margin-top: auto;
  font-family: "JetBrains Mono", monospace;
  font-size: 11.5px;
  line-height: 1.9;
  color: var(--ink-faint);
  padding-top: 16px;
  border-top: 1px dashed var(--rule);
}
.decode-col .specs .row {
  display: flex;
  justify-content: space-between;
}
.decode-col .specs .row span:first-child { color: var(--ink-soft); }
.decode-col .specs .row span:last-child  { color: var(--ink); }

/* ---------- DEPLOYMENT PATHS ---------- */
.paths {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  margin-top: 0;
}
.path {
  position: relative;
}
.path .path-tag {
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--rust);
  margin-bottom: 12px;
  display: flex;
  gap: 12px;
  align-items: baseline;
}
.path .path-tag .roman {
  border: 1px solid var(--rust);
  padding: 2px 8px;
  color: var(--rust);
  font-weight: 600;
}
.path h3 {
  font-family: "Inter Tight", sans-serif;
  font-weight: 600;
  font-size: 24px;
  margin: 0 0 8px;
  letter-spacing: -0.02em;
  line-height: 1.15;
  color: var(--ink);
}
.path .path-sub {
  color: var(--ink-faint);
  margin-bottom: 22px;
  font-size: 13px;
  font-family: "JetBrains Mono", monospace;
  letter-spacing: 0.02em;
}
.path p {
  margin: 0 0 22px;
  color: var(--ink-soft);
  line-height: 1.6;
  font-size: 14.5px;
}
.codeblock {
  background: var(--ink);
  color: #e8dfc6;
  font-family: "JetBrains Mono", monospace;
  font-size: 13px;
  line-height: 1.75;
  padding: 22px 24px;
  overflow-x: auto;
  position: relative;
  border: 1px solid var(--ink);
}
.codeblock .prompt { color: var(--rust); user-select: none; }
.codeblock .comment { color: #9aa9a3; font-style: italic; }
.codeblock .kw { color: #e0c789; }
.codeblock .head {
  display: flex;
  justify-content: space-between;
  font-size: 10.5px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: #94a1ab;
  border-bottom: 1px solid #2d4d65;
  padding-bottom: 12px;
  margin-bottom: 14px;
}
.codeblock pre {
  margin: 0;
  white-space: pre;
}

.path-notes {
  margin-top: 18px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  font-family: "JetBrains Mono", monospace;
  font-size: 11.5px;
  color: var(--ink-faint);
}
.path-notes .row {
  display: flex;
  gap: 14px;
  align-items: baseline;
}
.path-notes .row .k {
  color: var(--ink-soft);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  flex: 0 0 110px;
}
.path-notes .row .v { color: var(--ink); }

/* ---------- FEATURE STRIP ---------- */
.features {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}
.feature {
  padding: 28px 24px;
  border-right: 1px solid var(--rule);
}
.feature:last-child { border-right: none; }
.feature .n {
  font-family: "JetBrains Mono", monospace;
  font-size: 10.5px;
  letter-spacing: 0.18em;
  color: var(--rust);
  margin-bottom: 10px;
}
.feature h4 {
  font-family: "Inter Tight", sans-serif;
  font-weight: 600;
  font-size: 16px;
  margin: 0 0 8px;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.feature p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.5;
  color: var(--ink-soft);
  text-wrap: pretty;
}

/* ---------- FOOTER ---------- */
footer.foot {
  margin-top: 96px;
  padding: 40px 0 56px;
  border-top: 1px solid var(--rule);
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
  font-size: 14.5px;
  color: var(--ink-soft);
}
footer.foot h5 {
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink);
  margin: 0 0 14px;
  font-weight: 500;
}
footer.foot ul { list-style: none; padding: 0; margin: 0; }
footer.foot li { margin-bottom: 6px; }
footer.foot a { border: none; color: var(--ink-soft); }
footer.foot a:hover { color: var(--rust); }
footer.foot .colophon p {
  margin: 8px 0 0;
  text-wrap: pretty;
}
footer.foot .colophon .kin {
  margin-top: 14px;
  font-style: normal;
  color: var(--ink-soft);
  padding-top: 14px;
  border-top: 1px dashed var(--rule);
}
footer.foot .colophon .kin a {
  color: var(--ink);
  border-bottom: 1px solid var(--rule);
}
footer.foot .colophon .kin a:hover { color: var(--rust); border-color: var(--rust); }
footer.foot .colophon {
  font-family: "Inter Tight", sans-serif;
  font-style: italic;
  color: var(--ink-soft);
  line-height: 1.55;
  max-width: 36ch;
  font-size: 14px;
}
footer.foot .colophon .word {
  font-style: normal;
  color: var(--ink);
  font-size: 17px;
  font-weight: 600;
  font-family: "Inter Tight", sans-serif;
  letter-spacing: -0.01em;
  display: block;
  margin-bottom: 8px;
}
.signoff {
  border-top: 1px dashed var(--rule);
  margin-top: 24px;
  padding-top: 18px;
  display: flex;
  justify-content: space-between;
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

/* ---------- responsive ---------- */
@media (max-width: 960px) {
  .page { padding: 0 28px; }
  .hero {
    grid-template-columns: 1fr;
    grid-template-areas: "banner" "right" "left";
    gap: 40px;
    padding-top: 48px;
  }
  .decodes { grid-template-columns: 1fr; }
  .decode-col { border-right: none; border-bottom: 1px solid var(--rule); }
  .decode-col:last-child { border-bottom: none; }
  .paths { grid-template-columns: 1fr; gap: 56px; }
  .features { grid-template-columns: 1fr 1fr; }
  .feature:nth-child(2) { border-right: none; }
  .feature:nth-child(1), .feature:nth-child(2) { border-bottom: 1px solid var(--rule); }
  footer.foot { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 600px) {
  .page { padding: 0 20px; }
  .topnav { display: none; }
  .features { grid-template-columns: 1fr; }
  .feature { border-right: none; border-bottom: 1px solid var(--rule); }
  .feature:last-child { border-bottom: none; }
  footer.foot { grid-template-columns: 1fr; }
  h1.hero-title { font-size: 44px; }
}