/* =========================================================================
   HudhudX — Urban Solutions & Urban Lab
   Single stylesheet. Sections:
   1 Fonts   2 Tokens   3 Base   4 Layout   5 Header & navigation
   6 Type utilities   7 Figures & diagrams   8 Home   9 Services
   10 Urban Lab   11 Projects   12 About   13 Contact   14 Footer
   15 Responsive   16 Motion & print
   ========================================================================= */

/* 1 Fonts ---------------------------------------------------------------- */
@font-face {
  font-family: "Instrument Sans";
  src: url("../fonts/instrument-sans-latin-wght-normal.woff2") format("woff2");
  font-weight: 400 700;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Newsreader";
  src: url("../fonts/newsreader-latin-wght-normal.woff2") format("woff2");
  font-weight: 200 800;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Newsreader";
  src: url("../fonts/newsreader-latin-wght-italic.woff2") format("woff2");
  font-weight: 200 800;
  font-style: italic;
  font-display: swap;
}

/* 2 Tokens --------------------------------------------------------------- */
:root {
  --navy: #061e36;
  --navy-2: #0c2b49;
  --navy-3: #16395a;
  --paper: #f4f0e8;
  --paper-2: #ebe6db;
  --white: #ffffff;
  --teal: #3e7c7b;
  --teal-dk: #1f4e4c;
  --teal-lt: #8fbdb9;
  --mist: #c7d4d2;
  --ochre: #b7864b;
  --ochre-dk: #85591f;
  --muted: #4a5c6d;
  --muted-on-navy: #a9bbc9;
  --rule: rgba(6, 30, 54, 0.2);
  --rule-soft: rgba(6, 30, 54, 0.1);
  --rule-on-navy: rgba(255, 255, 255, 0.22);

  --sans: "Instrument Sans", "Helvetica Neue", Arial, system-ui, sans-serif;
  --serif: "Newsreader", Georgia, "Times New Roman", serif;

  --gutter: clamp(20px, 4vw, 56px);
  --max: 1400px;
  --header-h: 72px;
  --col-gap: clamp(16px, 2vw, 28px);
  --section-y: clamp(72px, 10vw, 148px);
}

/* 3 Base ----------------------------------------------------------------- */
*,
*::before,
*::after { box-sizing: border-box; }
html {
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: calc(var(--header-h) + 16px);
}
body {
  margin: 0;
  background: var(--paper);
  color: var(--navy);
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.6;
  font-feature-settings: "tnum" 1, "lnum" 1;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img, svg { display: block; max-width: 100%; height: auto; }
h1, h2, h3, h4, p, ul, ol, dl, dd, figure { margin: 0; padding: 0; }
ul, ol { list-style: none; }
a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: 0.22em; }
a:hover { color: var(--teal-dk); }
button { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--ochre-dk); outline-offset: 3px; }
.on-navy :focus-visible { outline-color: var(--teal-lt); }
::selection { background: var(--navy); color: var(--paper); }

.skip-link {
  position: absolute; left: 12px; top: -60px; z-index: 100;
  background: var(--navy); color: var(--paper); padding: 10px 16px; text-decoration: none;
}
.skip-link:focus { top: 12px; }
.visually-hidden {
  position: absolute !important; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap;
}

/* 4 Layout --------------------------------------------------------------- */
.wrap { width: 100%; max-width: var(--max); margin-inline: auto; padding-inline: var(--gutter); }
.grid { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: var(--col-gap); }
.section { padding-block: var(--section-y); }
.section--tight { padding-block: clamp(48px, 6vw, 88px); }
.section + .section:not(.on-navy):not(.section--paper2) { border-top: 1px solid var(--rule); }
.section--paper2 { background: var(--paper-2); }
.on-navy { background: var(--navy); color: var(--paper); }
.on-navy a:hover { color: var(--teal-lt); }
.span-all { grid-column: 1 / -1; }

/* 5 Header & navigation -------------------------------------------------- */
.site-header {
  position: sticky; top: 0; z-index: 50; height: var(--header-h);
  background: var(--paper);
  border-bottom: 1px solid var(--rule);
}
.site-header .wrap { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: block; line-height: 0; }
.brand img { width: 148px; height: auto; }
.primary-nav ul { display: flex; gap: clamp(18px, 2.6vw, 40px); }
.primary-nav a {
  display: inline-flex; align-items: baseline; gap: 8px; padding: 8px 0;
  text-decoration: none; font-size: 0.9375rem; font-weight: 500; letter-spacing: 0.01em;
  border-bottom: 1px solid transparent;
}
.primary-nav a .n { font-size: 0.6875rem; color: var(--muted); letter-spacing: 0.08em; font-weight: 500; }
.primary-nav a:hover { border-bottom-color: var(--navy); color: var(--navy); }
.primary-nav a[aria-current="page"] { border-bottom-color: var(--navy); }
.nav-toggle {
  display: none; background: none; border: 1px solid var(--navy); padding: 9px 14px;
  font-size: 0.8125rem; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; cursor: pointer;
}
.nav-toggle:hover { background: var(--navy); color: var(--paper); }

/* 6 Type utilities ------------------------------------------------------- */
.anno {
  font-size: 0.75rem; line-height: 1.4; font-weight: 500;
  letter-spacing: 0.13em; text-transform: uppercase; color: var(--muted);
}
.on-navy .anno { color: var(--muted-on-navy); }
.anno b { font-weight: 600; color: var(--navy); }
.on-navy .anno b { color: var(--paper); }
.label { display: flex; gap: 14px; align-items: baseline; padding-bottom: 14px; margin-bottom: clamp(28px, 4vw, 56px); border-bottom: 1px solid var(--rule); }
.on-navy .label { border-bottom-color: var(--rule-on-navy); }
.label .num { color: var(--ochre-dk); font-weight: 600; }
.on-navy .label .num { color: var(--ochre); }

.h1 {
  font-size: clamp(2.5rem, 5.6vw, 5rem); line-height: 1.02; font-weight: 500;
  letter-spacing: -0.028em; text-wrap: balance;
}
.h2 {
  font-size: clamp(1.875rem, 3.6vw, 3.25rem); line-height: 1.08; font-weight: 500;
  letter-spacing: -0.02em; text-wrap: balance;
}
.h3 { font-size: clamp(1.25rem, 1.8vw, 1.5rem); line-height: 1.2; font-weight: 600; letter-spacing: -0.01em; }
.h4 { font-size: 0.8125rem; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase; }
.lead { font-size: clamp(1.125rem, 1.5vw, 1.3125rem); line-height: 1.55; max-width: 38em; }
.statement {
  font-family: var(--serif); font-weight: 350; font-size: clamp(1.625rem, 3.1vw, 2.75rem);
  line-height: 1.2; letter-spacing: -0.012em; text-wrap: pretty;
}
.statement em { font-style: italic; color: var(--teal-dk); }
.on-navy .statement em { color: var(--teal-lt); }
.prose p + p { margin-top: 1.1em; }
.prose { max-width: 40em; }
.muted { color: var(--muted); }
.on-navy .muted { color: var(--muted-on-navy); }

.link-arrow {
  display: inline-flex; gap: 10px; align-items: baseline; font-weight: 600; text-decoration: none;
  border-bottom: 1px solid currentColor; padding-bottom: 3px;
}
.link-arrow::after { content: "\2192"; transition: transform 0.2s ease; }
.link-arrow:hover::after { transform: translateX(4px); }
.btn {
  display: inline-block; background: var(--navy); color: var(--paper); text-decoration: none;
  padding: 15px 24px; font-weight: 600; letter-spacing: 0.02em; border: 1px solid var(--navy); cursor: pointer;
}
.btn:hover { background: var(--teal-dk); border-color: var(--teal-dk); color: var(--paper); }
.btn--ghost { background: transparent; color: var(--navy); }
.btn--ghost:hover { background: var(--navy); color: var(--paper); }
.on-navy .btn { background: var(--paper); color: var(--navy); border-color: var(--paper); }
.on-navy .btn:hover { background: var(--teal-lt); border-color: var(--teal-lt); color: var(--navy); }
.on-navy .btn--ghost { background: transparent; color: var(--paper); border-color: var(--rule-on-navy); }
.on-navy .btn--ghost:hover { background: var(--paper); color: var(--navy); }
.actions { display: flex; flex-wrap: wrap; gap: 14px 28px; align-items: center; }

/* ruled index lists */
.index { border-top: 1px solid var(--rule); }
.index > li {
  display: grid; grid-template-columns: 56px 1fr; column-gap: var(--col-gap);
  padding: 14px 0; border-bottom: 1px solid var(--rule);
}
.index .k { font-size: 0.75rem; letter-spacing: 0.12em; color: var(--muted); padding-top: 0.28em; font-weight: 500; }
.on-navy .index, .on-navy .index > li { border-color: var(--rule-on-navy); }
.on-navy .index .k { color: var(--muted-on-navy); }
.def { display: grid; grid-template-columns: 110px 1fr; gap: 10px var(--col-gap); font-size: 0.9375rem; }
.def dt { font-size: 0.75rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); padding-top: 0.2em; font-weight: 500; }
.def dd { margin: 0; }
.def-rows > div { display: grid; grid-template-columns: 120px 1fr; gap: var(--col-gap); padding: 12px 0; border-bottom: 1px solid var(--rule); }
.def-rows { border-top: 1px solid var(--rule); font-size: 0.9375rem; }
.def-rows dt { font-size: 0.75rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); padding-top: 0.2em; font-weight: 500; }
.on-navy .def-rows, .on-navy .def-rows > div { border-color: var(--rule-on-navy); }
.on-navy .def-rows dt { color: var(--muted-on-navy); }

/* 7 Figures & diagrams --------------------------------------------------- */
.fig { position: relative; }
.fig-frame {
  position: relative; border: 1px solid var(--navy); background: var(--paper);
  aspect-ratio: 4 / 3; overflow: hidden;
}
.fig-frame img { position: absolute; inset: 0; width: 100%; height: 100%; }
.fig-ticks { position: absolute; display: flex; justify-content: space-around; pointer-events: none; font-size: 0.625rem; letter-spacing: 0.1em; color: var(--muted); font-weight: 500; }
.fig-ticks--top { left: 0; right: 0; top: -22px; }
.fig-ticks--left { top: 0; bottom: 0; left: -22px; flex-direction: column; align-items: center; }
.fig-caption { margin-top: 14px; display: grid; grid-template-columns: auto 1fr; gap: 6px 16px; font-size: 0.8125rem; line-height: 1.5; color: var(--muted); max-width: 46em; }
.fig-caption b { color: var(--navy); font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; font-size: 0.6875rem; padding-top: 0.25em; }
.pin {
  position: absolute; z-index: 3; width: 26px; height: 26px; margin: -13px 0 0 -13px;
  display: grid; place-items: center; background: var(--navy); color: var(--paper);
  font-size: 0.75rem; font-weight: 700; letter-spacing: 0.04em; border: 1px solid var(--paper);
}
.legend-row { display: flex; flex-wrap: wrap; gap: 8px 28px; margin-top: 18px; font-size: 0.875rem; }
.legend-row span { display: inline-flex; gap: 10px; align-items: center; }
.legend-row i {
  font-style: normal; width: 22px; height: 22px; display: grid; place-items: center;
  background: var(--navy); color: var(--paper); font-size: 0.6875rem; font-weight: 700;
}

/* layered diagram */
.layers { position: relative; }
.layers .layer { transition: opacity 0.35s ease; }
.layers .layer--over { mix-blend-mode: multiply; }
.js .layers .layer[data-off="true"] { opacity: 0; }
.layer-tabs { display: flex; flex-wrap: wrap; border: 1px solid var(--navy); margin-bottom: 22px; }
.layer-tabs button {
  flex: 1 1 0; min-width: 120px; background: transparent; border: 0; border-right: 1px solid var(--navy);
  padding: 12px 14px; text-align: left; cursor: pointer; font-size: 0.875rem; font-weight: 500; line-height: 1.3;
}
.layer-tabs button:last-child { border-right: 0; }
.layer-tabs button .anno { display: block; margin-bottom: 2px; }
.layer-tabs button[aria-pressed="true"] { background: var(--navy); color: var(--paper); }
.layer-tabs button[aria-pressed="true"] .anno { color: var(--muted-on-navy); }
.layer-tabs button:hover:not([aria-pressed="true"]) { background: var(--paper-2); }
.no-js .layer-tabs { display: none; }
.layer-note { min-height: 4.8em; }
.layer-note p { max-width: 36em; }
.layer-note [hidden] { display: none; }

/* 8 Home ----------------------------------------------------------------- */
.hero { padding-top: clamp(40px, 6vw, 88px); padding-bottom: clamp(64px, 8vw, 120px); }
.hero .grid { align-items: end; row-gap: 48px; }
.hero-copy { grid-column: 1 / span 5; align-self: stretch; display: flex; flex-direction: column; justify-content: space-between; gap: 40px; }
.hero-copy .h1 { margin: 22px 0 28px; }
.hero-meta { margin-top: auto; }
.hero-figure { grid-column: 6 / -1; padding-left: 26px; padding-top: 24px; }
.hero-figure .fig-frame { aspect-ratio: 4 / 3; }

.intro .statement { grid-column: 1 / span 8; }
.intro .intro-side { grid-column: 10 / -1; align-self: end; }

.relation { row-gap: 40px; }
.relation-copy { grid-column: 1 / span 5; }
.relation-fig { grid-column: 7 / -1; }
.areas { margin-top: 36px; border-top: 1px solid var(--rule); }
.areas > li { display: grid; grid-template-columns: 44px 1fr; gap: var(--col-gap); padding: 18px 0; border-bottom: 1px solid var(--rule); }
.areas .letter {
  width: 32px; height: 32px; display: grid; place-items: center; background: var(--navy); color: var(--paper);
  font-weight: 700; font-size: 0.8125rem;
}
.areas h3 { margin-bottom: 6px; }
.areas p { color: var(--muted); font-size: 0.9688rem; max-width: 32em; }
.areas a { text-decoration: none; }
.areas a:hover h3 { text-decoration: underline; text-underline-offset: 0.2em; }
.loop { margin-top: 34px; padding: 18px 20px; border: 1px solid var(--rule); font-size: 0.9375rem; background: var(--paper-2); }
.loop b { font-weight: 600; }

.lab-band { position: relative; overflow: hidden; }
.lab-band .field {
  position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: 0.55; pointer-events: none;
}
.lab-band .wrap { position: relative; z-index: 1; }
.lab-grid { row-gap: 48px; }
.lab-title { grid-column: 1 / span 6; }
.lab-title .h1 { font-size: clamp(3rem, 8vw, 7.5rem); letter-spacing: -0.035em; line-height: 0.96; margin: 20px 0 28px; }
.lab-title .tag {
  display: inline-block; border: 1px solid var(--rule-on-navy); padding: 6px 12px; margin-bottom: 6px;
}
.lab-list { grid-column: 8 / -1; align-self: end; }
.lab-list .index li { padding: 12px 0; font-size: 1.0156rem; }

.empty-teaser { row-gap: 32px; align-items: stretch; }
.empty-teaser .copy { grid-column: 1 / span 5; }
.hatch-frame {
  grid-column: 7 / -1; min-height: 180px; border: 1px solid var(--navy); position: relative;
  background-image: repeating-linear-gradient(135deg, transparent 0 10px, var(--rule) 10px 11px);
  display: grid; place-items: center; padding: 28px; text-align: left;
}
.hatch-frame p { background: var(--paper); padding: 14px 18px; border: 1px solid var(--navy); max-width: 28em; font-size: 0.9375rem; }

.contact-strip { row-gap: 28px; align-items: end; }
.contact-strip .a { grid-column: 1 / span 6; }
.contact-strip .b { grid-column: 8 / -1; }
.mail-big {
  font-size: clamp(1.75rem, 4.2vw, 3.75rem); font-weight: 500; letter-spacing: -0.025em; line-height: 1.05;
  text-decoration: none; border-bottom: 2px solid var(--navy); padding-bottom: 6px; word-break: break-word;
}
.mail-big:hover { border-bottom-color: var(--teal); }

/* Page heads (inner pages) */
.page-head { padding-top: clamp(48px, 7vw, 104px); padding-bottom: clamp(48px, 6vw, 88px); border-bottom: 1px solid var(--rule); }
.page-head .grid { row-gap: 32px; align-items: end; }
.page-head .h1 { grid-column: 1 / span 8; }
.page-head .meta { grid-column: 10 / -1; }
.page-head .lead { grid-column: 1 / span 7; margin-top: 8px; }

/* 9 Services ------------------------------------------------------------- */
.svc { padding-block: clamp(48px, 6vw, 88px); border-bottom: 1px solid var(--rule); }
.svc .grid { row-gap: 32px; }
.svc-head { grid-column: 1 / span 4; }
.svc-head .letter {
  display: inline-grid; place-items: center; width: 44px; height: 44px; background: var(--navy); color: var(--paper);
  font-weight: 700; font-size: 1rem; margin-bottom: 22px;
}
.svc-body { grid-column: 6 / -1; }
.svc-body .prose { margin-bottom: 36px; }
.svc-cols { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: var(--col-gap); row-gap: 32px; }
.svc-cols ul.rule-list { border-top: 1px solid var(--rule); margin-top: 12px; }
.rule-list li { padding: 10px 0; border-bottom: 1px solid var(--rule); font-size: 1rem; }
.questions li { font-family: var(--serif); font-size: 1.1875rem; line-height: 1.35; padding: 12px 0; border-bottom: 1px solid var(--rule); }
.questions { border-top: 1px solid var(--rule); margin-top: 12px; }
.svc-fig { grid-column: 1 / -1; margin-top: 8px; }
.svc-fig .fig-frame { aspect-ratio: auto; background: var(--paper-2); display: grid; place-items: center; padding: 32px; }
.svc-fig .fig-frame img { position: static; width: min(560px, 100%); height: auto; }

.process { counter-reset: step; border-top: 1px solid var(--navy); display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); }
.process li { padding: 18px 18px 22px 0; border-right: 1px solid var(--rule); padding-left: 18px; }
.process li:first-child { padding-left: 0; }
.process li:last-child { border-right: 0; }
.process li::before { counter-increment: step; content: "0" counter(step); display: block; font-size: 0.75rem; letter-spacing: 0.12em; color: var(--muted); margin-bottom: 18px; font-weight: 500; }
.process h3 { font-size: 1.0625rem; margin-bottom: 8px; }
.process p { font-size: 0.9375rem; color: var(--muted); }

/* 10 Urban Lab ----------------------------------------------------------- */
.lab-hero { position: relative; overflow: hidden; padding-block: clamp(64px, 9vw, 140px); }
.lab-hero .field { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: 0.6; pointer-events: none; }
.lab-hero .wrap { position: relative; z-index: 1; }
.lab-hero .grid { row-gap: 36px; }
.lab-hero .h1 { grid-column: 1 / span 9; font-size: clamp(3.25rem, 9.5vw, 9rem); letter-spacing: -0.04em; line-height: 0.94; margin: 22px 0 8px; }
.lab-hero .lead { grid-column: 1 / span 6; color: var(--paper); }
.lab-hero .status { grid-column: 9 / -1; align-self: end; }
.status-badge { display: inline-flex; gap: 10px; align-items: center; border: 1px solid var(--rule-on-navy); padding: 8px 14px; background: rgba(6, 30, 54, 0.7); }
.status-badge::before { content: ""; width: 8px; height: 8px; background: var(--ochre); }

.prog { border-top: 1px solid var(--navy); }
.prog > li { display: grid; grid-template-columns: 90px minmax(0, 4fr) minmax(0, 5fr); column-gap: var(--col-gap); padding: 28px 0; border-bottom: 1px solid var(--rule); }
.prog .code { font-size: 0.75rem; letter-spacing: 0.12em; font-weight: 600; color: var(--ochre-dk); padding-top: 0.5em; }
.prog p { color: var(--muted); max-width: 34em; }
.prog .out { font-size: 0.875rem; margin-top: 10px; color: var(--navy); }
.prog .out span { color: var(--muted); letter-spacing: 0.1em; text-transform: uppercase; font-size: 0.6875rem; margin-right: 8px; font-weight: 500; }

.stack-fig { row-gap: 40px; }
.stack-fig .copy { grid-column: 1 / span 5; }
.stack-fig .fig { grid-column: 7 / -1; }
.stack { display: grid; gap: 0; border: 1px solid var(--navy); background: var(--paper); }
.stack .lab-row { background: var(--navy); color: var(--paper); padding: 22px 22px 24px; }
.stack .lab-row .anno { color: var(--muted-on-navy); }
.stack .lab-row strong { display: block; font-size: 1.5rem; letter-spacing: -0.01em; margin-top: 4px; font-weight: 500; }
.stack .svc-row { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); }
.stack .svc-row div { padding: 18px 18px 22px; border-right: 1px solid var(--navy); border-top: 1px solid var(--navy); font-size: 0.9375rem; line-height: 1.35; }
.stack .svc-row div:last-child { border-right: 0; }
.stack .svc-row b { display: block; margin-bottom: 8px; font-size: 0.75rem; letter-spacing: 0.12em; }
.stack .arrows { display: grid; grid-template-columns: 1fr 1fr; border-top: 1px solid var(--navy); font-size: 0.8125rem; color: var(--muted); }
.stack .arrows div { padding: 12px 18px; }
.stack .arrows div + div { border-left: 1px solid var(--navy); }

.pubs { width: 100%; border-collapse: collapse; font-size: 0.9688rem; }
.pubs th, .pubs td { text-align: left; padding: 14px 16px 14px 0; border-bottom: 1px solid var(--rule); vertical-align: top; }
.pubs thead th { font-size: 0.6875rem; letter-spacing: 0.13em; text-transform: uppercase; font-weight: 500; color: var(--muted); border-bottom: 1px solid var(--navy); }
.pubs td:last-child, .pubs th:last-child { padding-right: 0; }
.pubs .st { white-space: nowrap; font-size: 0.8125rem; letter-spacing: 0.04em; }
.pubs .st::before { content: ""; display: inline-block; width: 8px; height: 8px; border: 1px solid var(--navy); margin-right: 8px; }
.principles { counter-reset: p; }
.principles li { display: grid; grid-template-columns: 56px 1fr; gap: var(--col-gap); padding: 20px 0; border-bottom: 1px solid var(--rule); }
.principles li::before { counter-increment: p; content: "P" counter(p); font-size: 0.75rem; letter-spacing: 0.12em; font-weight: 600; color: var(--ochre-dk); padding-top: 0.4em; }
.principles { border-top: 1px solid var(--navy); }
.principles h3 { font-size: 1.125rem; margin-bottom: 4px; }
.principles p { color: var(--muted); max-width: 40em; }

/* 11 Projects ------------------------------------------------------------ */
.register { width: 100%; border-collapse: collapse; font-size: 0.9375rem; border-top: 1px solid var(--navy); }
.register th { text-align: left; font-size: 0.6875rem; letter-spacing: 0.13em; text-transform: uppercase; font-weight: 500; color: var(--muted); padding: 12px 14px 12px 0; border-bottom: 1px solid var(--navy); }
.register td { padding: 0; height: 52px; border-bottom: 1px solid var(--rule); color: var(--rule); }
.register tbody tr:nth-child(n+2) td { height: 52px; }
.register td::before { content: "\2014"; color: rgba(6, 30, 54, 0.3); }
.register-empty {
  margin-top: 0; padding: 36px 28px; border: 1px solid var(--navy); border-top: 0;
  background-image: repeating-linear-gradient(135deg, transparent 0 10px, var(--rule-soft) 10px 11px);
}
.register-empty p { background: var(--paper); display: inline-block; padding: 10px 14px; border: 1px solid var(--navy); max-width: 34em; }
.entry-fields { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: var(--col-gap); }
.entry-fields li { padding: 12px 0; border-bottom: 1px solid var(--rule); display: grid; grid-template-columns: 150px 1fr; gap: var(--col-gap); font-size: 0.9375rem; }
.entry-fields { border-top: 1px solid var(--rule); }
.entry-fields li span:first-child { font-size: 0.75rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); padding-top: 0.2em; font-weight: 500; }

/* 12 About --------------------------------------------------------------- */
.about-grid { row-gap: 40px; }
.about-grid .a { grid-column: 1 / span 4; }
.about-grid .b { grid-column: 6 / -1; }
.cols-2 { column-count: 2; column-gap: var(--col-gap); }
.mark-fig { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 0; border: 1px solid var(--navy); }
.mark-fig div { padding: clamp(24px, 4vw, 56px); display: grid; place-items: center; }
.mark-fig div:first-child { background: var(--paper); }
.mark-fig div:last-child { background: var(--navy); }
.mark-fig img { width: min(100%, 360px); }
.clear-space {
  position: relative; padding: 16%; outline: 1px dashed rgba(6, 30, 54, 0.35); outline-offset: 0; background: var(--white);
}

/* 13 Contact ------------------------------------------------------------- */
.contact-grid { row-gap: 56px; }
.contact-main { grid-column: 1 / span 7; }
.contact-side { grid-column: 9 / -1; }
.topics { border-top: 1px solid var(--navy); margin-top: 8px; }
.topics a {
  display: grid; grid-template-columns: 1fr auto; gap: 16px; align-items: baseline; padding: 18px 0;
  border-bottom: 1px solid var(--rule); text-decoration: none; font-weight: 500;
}
.topics a span { color: var(--muted); font-size: 0.875rem; font-weight: 400; display: block; margin-top: 2px; }
.topics a::after { content: "\2192"; transition: transform 0.2s ease; }
.topics a:hover::after { transform: translateX(4px); }
.topics a:hover { color: var(--teal-dk); }
.copy-btn { background: none; border: 1px solid var(--navy); padding: 10px 16px; cursor: pointer; font-weight: 600; font-size: 0.875rem; }
.copy-btn:hover { background: var(--navy); color: var(--paper); }
.coord { font-variant-numeric: tabular-nums; }

/* 14 Footer -------------------------------------------------------------- */
.site-footer { background: var(--navy); color: var(--paper); padding-top: clamp(56px, 7vw, 96px); padding-bottom: 28px; }
.site-footer a { text-decoration: none; }
.site-footer a:hover { color: var(--teal-lt); text-decoration: underline; }
.footer-grid { row-gap: 40px; }
.footer-brand { grid-column: 1 / span 5; }
.footer-brand img { width: min(320px, 80%); }
.footer-brand p { margin-top: 24px; max-width: 28em; color: var(--muted-on-navy); font-size: 0.9375rem; }
.footer-nav { grid-column: 7 / span 3; }
.footer-contact { grid-column: 10 / -1; }
.site-footer .h4 { color: var(--muted-on-navy); margin-bottom: 14px; }
.site-footer li + li { margin-top: 8px; }
.footer-base { margin-top: clamp(40px, 6vw, 80px); padding-top: 18px; border-top: 1px solid var(--rule-on-navy); display: flex; flex-wrap: wrap; gap: 8px 32px; justify-content: space-between; }

/* 15 Responsive ---------------------------------------------------------- */
@media (max-width: 1100px) {
  .hero-copy { grid-column: 1 / span 6; }
  .hero-figure { grid-column: 7 / -1; padding-left: 22px; }
  .intro .statement { grid-column: 1 / -1; }
  .intro .intro-side { grid-column: 1 / span 6; margin-top: 32px; }
  .relation-copy { grid-column: 1 / span 6; }
  .relation-fig { grid-column: 7 / -1; }
  .svc-head { grid-column: 1 / span 4; }
  .svc-body { grid-column: 5 / -1; }
  .process { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .process li:nth-child(3) { border-right: 0; }
  .process li:nth-child(n+4) { border-top: 1px solid var(--rule); }
  .process li:nth-child(4) { padding-left: 0; }
}
@media (max-width: 900px) {
  :root { --header-h: 64px; }
  .brand img { width: 128px; }
  .nav-toggle { display: inline-block; }
  .js .primary-nav {
    position: fixed; inset: var(--header-h) 0 0 0; background: var(--paper); padding: 24px var(--gutter) 40px;
    overflow-y: auto; transform: translateY(-8px); opacity: 0; visibility: hidden;
    transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s;
  }
  .js .primary-nav[data-open="true"] { opacity: 1; transform: none; visibility: visible; }
  .js .primary-nav ul { flex-direction: column; gap: 0; border-top: 1px solid var(--navy); }
  .js .primary-nav li { border-bottom: 1px solid var(--rule); }
  .js .primary-nav a { display: flex; width: 100%; padding: 20px 0; font-size: 1.5rem; font-weight: 500; letter-spacing: -0.01em; border-bottom: 0; justify-content: space-between; flex-direction: row-reverse; }
  .js .primary-nav a .n { font-size: 0.75rem; }
  .js .primary-nav a[aria-current="page"] { color: var(--teal-dk); }
  .no-js .primary-nav ul { flex-wrap: wrap; gap: 6px 18px; }
  .no-js .site-header { height: auto; position: static; }
  .no-js .site-header .wrap { flex-direction: column; align-items: flex-start; padding-block: 12px; }

  .hero .grid { grid-template-columns: 1fr; }
  .hero-copy, .hero-figure { grid-column: 1 / -1; }
  .hero-figure { padding-left: 0; padding-top: 0; }
  .hero-figure .fig-ticks { display: none; }
  .hero-copy .h1 { margin: 18px 0 20px; }
  .page-head .h1, .page-head .lead, .page-head .meta { grid-column: 1 / -1; }
  .relation-copy, .relation-fig { grid-column: 1 / -1; }
  .lab-title, .lab-list, .empty-teaser .copy, .hatch-frame, .contact-strip .a, .contact-strip .b { grid-column: 1 / -1; }
  .lab-hero .h1, .lab-hero .lead, .lab-hero .status { grid-column: 1 / -1; }
  .svc-head, .svc-body { grid-column: 1 / -1; }
  .stack-fig .copy, .stack-fig .fig, .about-grid .a, .about-grid .b, .contact-main, .contact-side { grid-column: 1 / -1; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-nav { grid-column: 1 / span 6; }
  .footer-contact { grid-column: 7 / -1; }
  .prog > li { grid-template-columns: 56px 1fr; row-gap: 12px; }
  .prog > li > :nth-child(3) { grid-column: 2; }
  .entry-fields { grid-template-columns: 1fr; }
  .cols-2 { column-count: 1; }
}
@media (max-width: 640px) {
  body { font-size: 1rem; }
  .grid { column-gap: 12px; }
  .svc-cols { grid-template-columns: 1fr; }
  .process { grid-template-columns: 1fr 1fr; }
  .process li { border-right: 0; padding-left: 0; border-top: 1px solid var(--rule); }
  .process li:first-child { border-top: 0; }
  .process li:nth-child(odd) { padding-right: 14px; }
  .layer-tabs { flex-direction: column; }
  .layer-tabs button { border-right: 0; border-bottom: 1px solid var(--navy); }
  .layer-tabs button:last-child { border-bottom: 0; }
  .def, .def-rows > div { grid-template-columns: 1fr; gap: 2px; }
  .def-rows > div { padding: 12px 0; }
  .stack .svc-row { grid-template-columns: 1fr; }
  .stack .svc-row div { border-right: 0; }
  .stack .arrows { grid-template-columns: 1fr; }
  .stack .arrows div + div { border-left: 0; border-top: 1px solid var(--navy); }
  .mark-fig { grid-template-columns: 1fr; }
  .entry-fields li { grid-template-columns: 1fr; gap: 2px; }
  .register th:nth-child(n+4), .register td:nth-child(n+4) { display: none; }
  .pubs .st { white-space: normal; }
  .pubs th:nth-child(2), .pubs td:nth-child(2) { display: none; }
  .footer-nav, .footer-contact { grid-column: 1 / -1; }
  .fig-caption { grid-template-columns: 1fr; }
  .pin { width: 22px; height: 22px; margin: -11px 0 0 -11px; font-size: 0.6875rem; }
}

/* 16 Motion & print ------------------------------------------------------ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; scroll-behavior: auto !important; }
}
@media print {
  .site-header, .nav-toggle, .skip-link { display: none; }
  body { background: #fff; }
  .on-navy { background: #fff; color: #000; }
}

/* Additions: call-out pins, no-JS fallbacks */
.pin--a { left: 88.2%; top: 44.9%; }
.pin--b { left: 31.5%; top: 33.7%; }
.pin--c { left: 55%; top: 60%; }
.no-js .nav-toggle { display: none; }
.stack .lab-row { position: relative; }

/* Utilities (replace inline styles so the Content-Security-Policy can stay strict) */
.mt-12 { margin-top: 12px; }
.mt-16 { margin-top: 16px; }
.mt-18 { margin-top: 18px; }
.mt-20 { margin-top: 20px; }
.mt-28 { margin-top: 28px; }
.mt-32 { margin-top: 32px; }
.mt-64-mb-8 { margin-top: 64px; margin-bottom: 8px; }
.mt-48-mb-12 { margin-top: 48px; margin-bottom: 12px; }
.mb-0 { margin-bottom: 0; }
.mb-14 { margin-bottom: 14px; }
.mb-16 { margin-bottom: 16px; }
.mw-24 { max-width: 24em; }
.mw-34 { max-width: 34em; }
.mw-none { max-width: none; }
.h2-wide-20 { max-width: 20em; margin-bottom: 48px; }
.h2-wide-18 { max-width: 18em; margin-bottom: 48px; }
.h1-404 { margin: 20px 0 28px; }
.ink { color: var(--navy); }
.cols-1 { grid-template-columns: 1fr; }
.col-8 { grid-column: 1 / span 8; }
.col-all { grid-column: 1 / -1; }
.bt-rule { border-top: 1px solid var(--rule); }
.mail-big.mail-md { font-size: clamp(1.25rem, 2.4vw, 1.875rem); }