:root {
  --paper:  #eef1f4;   /* aluminum light  */
  --ink:    #131a22;   /* hangar night    */
  --panel:  #1a2532;   /* panel surface   */
  --amber:  #f4b41a;   /* taxiway marking */
  --sky:    #2f6fb0;   /* sectional blue  */
  --text:   #1d2630;
  --muted:  #5a6672;
  --line:   #ccd4dc;
 
  --wrap: 960px;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", "Cascadia Mono", Menlo, Consolas, monospace;
}
 
* { box-sizing: border-box; }
 
html { -webkit-text-size-adjust: 100%; }
 
body {
  margin: 0;
  background: var(--paper);
  color: var(--text);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.6;
}
 
.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 24px;
}
 
a { color: var(--sky); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }
 
:focus-visible {
  outline: 3px solid var(--amber);
  outline-offset: 2px;
}
 
/* ---------- Masthead ---------- */
.masthead {
  background: var(--ink);
  color: #fff;
  border-bottom: 3px solid var(--amber);
}
.masthead .wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px 28px;
  padding-top: 16px;
  padding-bottom: 16px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: #fff;
  margin-right: auto;
}
.brand:hover { text-decoration: none; }
.brand svg { display: block; flex: none; }
.brand .name {
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-size: 1.2rem;
  line-height: 1.2;
}
.brand .sub {
  display: block;
  max-width: 32ch;
  font-weight: 600;
  letter-spacing: 0.02em;
  font-size: 0.66rem;
  line-height: 1.35;
  color: var(--amber);
  margin-top: 2px;
}
 
/* ---------- Nav ---------- */
nav.primary { display: flex; flex-wrap: wrap; gap: 4px; }
nav.primary a {
  color: #c6cfd9;
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 8px 12px;
  border-radius: 3px;
}
nav.primary a:hover { color: #fff; text-decoration: none; }
nav.primary a.is-active {
  color: var(--ink);
  background: var(--amber);
}
 
/* ---------- Field data strip (signature element) ---------- */
.fieldstrip {
  background: var(--panel);
  color: #e7edf3;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.fieldstrip .wrap {
  display: flex;
  gap: 28px;
  padding-top: 12px;
  padding-bottom: 12px;
  font-family: var(--mono);
  font-size: 0.78rem;
  overflow-x: auto;
  white-space: nowrap;
}
.fieldstrip .cell { display: flex; flex-direction: column; gap: 2px; }
.fieldstrip .k {
  color: var(--amber);
  font-size: 0.6rem;
  letter-spacing: 0.16em;
}
.fieldstrip .v { color: #fff; letter-spacing: 0.02em; }
 
/* ---------- Hero ---------- */
.hero { padding: 64px 0 40px; }
.eyebrow {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 14px;
}
.hero h1 {
  margin: 0 0 16px;
  font-size: clamp(2rem, 6vw, 3.2rem);
  line-height: 1.04;
  letter-spacing: -0.01em;
  font-weight: 800;
  color: var(--ink);
  max-width: 18ch;
}
.hero p.lede {
  margin: 0;
  font-size: 1.18rem;
  color: var(--muted);
  max-width: 56ch;
}
.hero .actions { margin-top: 28px; display: flex; flex-wrap: wrap; gap: 12px; }
 
.btn {
  display: inline-block;
  font-weight: 700;
  letter-spacing: 0.04em;
  font-size: 0.86rem;
  text-transform: uppercase;
  padding: 12px 22px;
  border-radius: 3px;
  border: 2px solid var(--ink);
}
.btn.solid { background: var(--ink); color: #fff; }
.btn.solid:hover { background: #000; text-decoration: none; }
.btn.ghost { background: transparent; color: var(--ink); }
.btn.ghost:hover { background: var(--ink); color: #fff; text-decoration: none; }
 
/* ---------- Page header (interior pages) ---------- */
.pagehead { padding: 48px 0 8px; }
.pagehead h1 {
  margin: 8px 0 0;
  font-size: clamp(1.8rem, 5vw, 2.6rem);
  letter-spacing: -0.01em;
  color: var(--ink);
}
 
/* ---------- Sections ---------- */
section { padding: 28px 0; }
section + section { border-top: 1px solid var(--line); }
h2 {
  font-size: 1.05rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink);
  margin: 0 0 18px;
}
h2::before {
  content: "";
  display: inline-block;
  width: 26px;
  height: 3px;
  background: var(--amber);
  vertical-align: middle;
  margin-right: 12px;
  position: relative;
  top: -3px;
}
 
/* ---------- Cards ---------- */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 18px;
}
.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: 22px;
}
.card h3 {
  margin: 0 0 8px;
  font-size: 1.05rem;
  color: var(--ink);
}
.card p { margin: 0; color: var(--muted); font-size: 0.96rem; }
.card .tag {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--sky);
  display: block;
  margin-bottom: 10px;
}
 
/* ---------- Notices / announcements ---------- */
.notice {
  display: flex;
  gap: 18px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}
.notice:last-child { border-bottom: 0; }
.notice .date {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--muted);
  flex: none;
  width: 92px;
  padding-top: 3px;
  letter-spacing: 0.04em;
}
.notice .body { margin: 0; }
.notice .body strong { color: var(--ink); }
 
/* ---------- Document / link lists ---------- */
.doclist { list-style: none; margin: 0; padding: 0; }
.doclist li {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 13px 0;
  border-bottom: 1px solid var(--line);
}
.doclist li:last-child { border-bottom: 0; }
.doclist .meta {
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  margin-left: auto;
  flex: none;
}
 
/* ---------- Definition rows (dues, contact) ---------- */
.rows { margin: 0; }
.rows .row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 18px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}
.rows .row:last-child { border-bottom: 0; }
.rows dt {
  font-weight: 700;
  color: var(--ink);
  min-width: 180px;
}
.rows dd { margin: 0; color: var(--muted); }
 
/* ---------- Callout ---------- */
.callout {
  background: var(--ink);
  color: #e7edf3;
  border-radius: 6px;
  padding: 26px 28px;
}
.callout h2 { color: #fff; }
.callout h2::before { background: var(--amber); }
.callout p { margin: 0; color: #b9c4cf; }
.callout a { color: var(--amber); }
 
/* ---------- Contact form ---------- */
.cform { max-width: 640px; }
.fgrid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px 18px;
  margin-bottom: 16px;
}
.formfield { display: flex; flex-direction: column; gap: 7px; margin-bottom: 16px; }
.fgrid .formfield { margin-bottom: 0; }
.formfield label {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink);
}
.formfield .req { color: var(--amber); }
.cform input,
.cform select,
.cform textarea {
  font-family: var(--sans);
  font-size: 1rem;
  color: var(--text);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 11px 13px;
  width: 100%;
}
.cform textarea { resize: vertical; min-height: 130px; }
.cform input:focus,
.cform select:focus,
.cform textarea:focus {
  border-color: var(--ink);
  outline: 2px solid var(--amber);
  outline-offset: 1px;
}
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.form-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 16px; }
.form-actions .btn { border: 0; cursor: pointer; }
.form-actions .btn:disabled { opacity: 0.6; cursor: default; }
.form-status { margin: 0; font-size: 0.92rem; }
.form-status.is-ok  { color: #1f7a3d; }
.form-status.is-err { color: #b4322a; }
 
@media (max-width: 560px) {
  .fgrid { grid-template-columns: 1fr; }
}
 
/* ---------- Footer ---------- */
footer {
  margin-top: 32px;
  background: var(--ink);
  color: #9aa6b2;
  font-size: 0.85rem;
}
footer .wrap {
  padding-top: 28px;
  padding-bottom: 28px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  align-items: center;
}
footer a { color: #cdd6df; }
footer .spacer { margin-left: auto; }
footer .mono {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--amber);
}
 
@media (max-width: 560px) {
  body { font-size: 16px; }
  .brand { margin-right: 0; width: 100%; }
  nav.primary { width: 100%; }
  nav.primary a { padding: 8px 10px; }
}
 
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; scroll-behavior: auto !important; }
}