/* K4DIA. Field-built, bench-tested.
   Paper ground, olive equipment panel, rust for anything that moves. */

/* Set in IBM Plex, served from this site rather than from anybody else's.
   The same family the printed logbook is set in, under the SIL Open Font
   License. */
@font-face { font-family: "Plex Cond"; src: url("fonts/IBMPlexSansCondensed-Bold.woff2") format("woff2");
  font-weight: 700; font-style: normal; font-display: swap; }
@font-face { font-family: "Plex Cond"; src: url("fonts/IBMPlexSansCondensed-SemiBold.woff2") format("woff2");
  font-weight: 600; font-style: normal; font-display: swap; }
@font-face { font-family: "Plex Sans"; src: url("fonts/IBMPlexSans-Regular.woff2") format("woff2");
  font-weight: 400; font-style: normal; font-display: swap; }
@font-face { font-family: "Plex Sans"; src: url("fonts/IBMPlexSans-SemiBold.woff2") format("woff2");
  font-weight: 600; font-style: normal; font-display: swap; }
@font-face { font-family: "Plex Mono"; src: url("fonts/IBMPlexMono-Regular.woff2") format("woff2");
  font-weight: 400; font-style: normal; font-display: swap; }
@font-face { font-family: "Plex Mono"; src: url("fonts/IBMPlexMono-SemiBold.woff2") format("woff2");
  font-weight: 600; font-style: normal; font-display: swap; }

:root {
  --paper:      #efe8da;
  --paper-warm: #e7dfcd;
  --paper-line: #d4c9ae;
  --ink:        #1d1b17;
  --ink-soft:   #262420;
  --ink-mid:    #4a463d;
  --ink-faint:  #6f6a5c;
  --rust:       #b8501f;
  --rust-deep:  #963f16;
  --olive:      #3f4732;
  --olive-lo:   #333a29;
  --olive-hi:   #4c5540;
  --sand:       #d9d0b6;
  --sand-dim:   #a29a83;
  --amber:      #d8a24a;
  --shadow:     0 18px 40px rgba(29,27,23,.22);
  --mono: "Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --sans: "Plex Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --display: "Plex Cond", "Helvetica Neue Condensed", Impact, sans-serif;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 400 16px/1.6 var(--sans);
  -webkit-font-smoothing: antialiased;
}

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

a { color: inherit; }

.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 99;
  background: var(--ink); color: var(--paper); padding: .8rem 1.2rem;
}
.skip-link:focus { left: 0; }

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

/* --------------------------------------------------------------- shared */
.eyebrow {
  margin: 0 0 .5rem;
  font: 600 .68rem/1.2 var(--mono);
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--rust);
}

h2 {
  margin: 0;
  font: 700 clamp(2.1rem, 4.4vw, 3.4rem)/.95 var(--display);
  letter-spacing: .01em;
  text-transform: uppercase;
}

h3 {
  margin: 0 0 .5rem;
  font: 600 1.02rem/1.25 var(--sans);
  letter-spacing: .01em;
}

.btn {
  display: inline-flex; align-items: center; gap: .6rem;
  padding: .95rem 1.5rem;
  font: 600 .74rem/1 var(--mono);
  letter-spacing: .16em; text-transform: uppercase;
  text-decoration: none;
  border: 1px solid transparent;
  transition: background .15s ease, color .15s ease, border-color .15s ease;
}
.btn svg { width: 20px; height: 16px; }
.btn-solid { background: var(--rust); color: #fbf6ea; }
.btn-solid:hover { background: var(--rust-deep); }
.btn-quiet { border-color: var(--ink); color: var(--ink); background: transparent; }
.btn-quiet:hover { background: var(--ink); color: var(--paper); }
.btn-onink { border-color: var(--sand); color: var(--sand); }
.btn-onink:hover { background: var(--sand); color: var(--ink); }

/* ------------------------------------------------------------- masthead */
.masthead {
  position: sticky; top: 0; z-index: 40;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 2rem;
  padding: .85rem clamp(1.1rem, 3.4vw, 3rem);
  background: rgba(239,232,218,.94);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--paper-line);
}

.brand {
  display: flex; align-items: center; gap: .95rem;
  text-decoration: none;
}
.brand-call {
  font: 700 1.9rem/1 var(--display);
  letter-spacing: .01em;
}
.brand-lines {
  display: grid; gap: .18rem;
  padding-left: .95rem;
  border-left: 1px solid var(--paper-line);
  font: 400 .58rem/1.25 var(--mono);
  letter-spacing: .17em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

.mainnav { display: flex; justify-content: center; gap: clamp(1.2rem, 3vw, 2.6rem); }
.mainnav a {
  position: relative;
  padding: .35rem 0;
  font: 600 .74rem/1 var(--mono);
  letter-spacing: .19em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--ink);
}
.mainnav a::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -.15rem;
  height: 2px; background: var(--rust);
  transform: scaleX(0); transform-origin: left;
  transition: transform .18s ease;
}
.mainnav a:hover::after, .mainnav a.is-here::after { transform: scaleX(1); }

.masthead-tag {
  display: grid; gap: .2rem; justify-items: end;
  padding-top: .35rem;
  border-top: 1px solid var(--paper-line);
  text-align: right;
}
.masthead-tag strong {
  font: 600 .68rem/1 var(--mono);
  letter-spacing: .2em; text-transform: uppercase;
}
.masthead-tag span {
  font: 400 .55rem/1 var(--mono);
  letter-spacing: .15em; text-transform: uppercase;
  color: var(--ink-faint);
}

.menu-toggle {
  display: none;
  width: 44px; height: 40px;
  align-content: center; gap: 5px;
  padding: 0 9px;
  background: transparent;
  border: 1px solid var(--paper-line);
  cursor: pointer;
}
.menu-toggle span { display: block; height: 2px; background: var(--ink); transition: transform .2s, opacity .2s; }
.menu-open .menu-toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-open .menu-toggle span:nth-child(2) { opacity: 0; }
.menu-open .menu-toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mainnav-mobile { display: none; }

/* ----------------------------------------------------------------- hero */
.hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 46%);
  gap: clamp(1.5rem, 4vw, 3.5rem);
  align-items: center;
  padding: clamp(2.5rem, 6vw, 5rem) clamp(1.1rem, 3.4vw, 3rem) clamp(2.5rem, 5vw, 4rem);
  background:
    linear-gradient(180deg, rgba(255,252,244,.7), rgba(231,223,205,.55)),
    var(--paper);
  border-bottom: 1px solid var(--paper-line);
  overflow: hidden;
}

.hero-art { position: absolute; inset: 0; pointer-events: none; }
.hero-art .topo { position: absolute; inset: 0; width: 100%; height: 100%; opacity: .78; }
.hero-art .ridge { position: absolute; left: 0; bottom: 0; width: min(46%, 520px); opacity: .8; }

.hero-copy { position: relative; z-index: 2; max-width: 44rem; }

.coords {
  margin: 0 0 1.4rem;
  font: 400 .6rem/1.6 var(--mono);
  letter-spacing: .18em;
  color: var(--ink-faint);
}

/* The wordmark carries the whole page, so it is set as big as it can be and
   worn down slightly, the way a stencilled panel goes after a few seasons. */
.wordmark {
  position: relative;
  margin: 0;
  font: 700 clamp(4.2rem, 12.5vw, 9.5rem)/.82 var(--display);
  letter-spacing: -.01em;
  text-transform: uppercase;
  color: var(--ink);
  -webkit-text-stroke: .035em var(--ink);
  paint-order: stroke fill;
}
.wordmark::after {
  content: "";
  position: absolute; inset: -2% -1%;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='220' height='220'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3'/%3E%3CfeColorMatrix type='matrix' values='0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 -1.15 .78'/%3E%3C/filter%3E%3Crect width='220' height='220' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 340px 340px;
  mix-blend-mode: lighten;
  opacity: .34;
  pointer-events: none;
}

.tagline {
  display: flex; align-items: center; gap: 1rem;
  margin: 1.1rem 0 1.4rem;
  font: 600 clamp(.78rem, 1.5vw, .95rem)/1 var(--mono);
  letter-spacing: .2em;
  text-transform: uppercase;
}
.tagline-rule { display: block; width: 68px; height: 3px; background: var(--rust); flex: none; }

.lede {
  max-width: 32rem;
  margin: 0 0 1.9rem;
  font-size: clamp(1.02rem, 1.9vw, 1.22rem);
  line-height: 1.5;
  color: var(--ink-mid);
}

.hero-actions { display: flex; flex-wrap: wrap; gap: .85rem; }

.creed {
  margin: 2.6rem 0 0;
  font: 400 .62rem/1 var(--mono);
  letter-spacing: .28em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

.stack {
  position: absolute; z-index: 2; margin: 0;
  font: 400 .58rem/1.85 var(--mono);
  letter-spacing: .17em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.stack-a { top: clamp(4rem, 11vw, 8rem); right: 48.5%; }
.stack-b { bottom: clamp(3rem, 7vw, 5rem); right: 48.5%; }

/* ---------------------------------------------------------------- panel */
/* Painted equipment: olive case, screwed at the corners, laid out the way a
   front panel is rather than the way a web page is. */
.panel {
  position: relative; z-index: 2;
  padding: 1.5rem 1.6rem 1.35rem;
  color: var(--sand);
  background:
    radial-gradient(120% 100% at 20% 0%, rgba(255,255,255,.07), transparent 60%),
    linear-gradient(160deg, var(--olive-hi), var(--olive) 45%, var(--olive-lo));
  border: 1px solid rgba(0,0,0,.35);
  border-radius: 3px;
  box-shadow: var(--shadow), inset 0 1px 0 rgba(255,255,255,.09);
}

.screw {
  position: absolute; width: 13px; height: 13px; border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, #9a9a8c, #4d4f42 65%, #2c2e26);
  box-shadow: inset 0 0 0 1px rgba(0,0,0,.4), 0 1px 1px rgba(255,255,255,.08);
}
.screw::after {
  content: ""; position: absolute; inset: 0; margin: auto;
  width: 8px; height: 1.5px; background: rgba(0,0,0,.55);
  transform: rotate(28deg);
}
.screw-tl { top: 9px; left: 9px; }
.screw-tr { top: 9px; right: 9px; }
.screw-bl { bottom: 9px; left: 9px; }
.screw-br { bottom: 9px; right: 9px; }

.panel-head {
  display: flex; align-items: center; gap: 1rem;
  padding: 0 .6rem .9rem;
}
.panel-head h2 {
  font: 700 1.55rem/1 var(--display);
  letter-spacing: .06em;
  color: #efe7d1;
}
.panel-head span:last-child {
  font: 400 .58rem/1 var(--mono);
  letter-spacing: .2em; text-transform: uppercase;
  color: var(--sand-dim);
}
.panel-rule { flex: 1; height: 1px; background: rgba(217,208,182,.35); }

.panel-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 1.4rem;
  align-items: start;
}

.index-rows { display: grid; gap: .5rem; }
.index-row {
  position: relative;
  display: grid; grid-template-columns: 2.4rem 1fr auto;
  align-items: center; gap: .5rem;
  padding: .78rem .9rem;
  text-decoration: none;
  color: #e2dac2;
  background: linear-gradient(180deg, rgba(0,0,0,.22), rgba(0,0,0,.32));
  border: 1px solid rgba(0,0,0,.3);
  border-left: 3px solid transparent;
  transition: background .15s ease, border-color .15s ease;
}
.index-row i {
  font: 400 .7rem/1 var(--mono); letter-spacing: .1em;
  font-style: normal; color: var(--sand-dim);
}
.index-row span {
  font: 600 .78rem/1 var(--mono);
  letter-spacing: .19em; text-transform: uppercase;
}
.index-row b { color: var(--sand-dim); font-weight: 400; }
.index-row:hover, .index-row.is-active { border-left-color: var(--rust); background: rgba(0,0,0,.4); }
.index-row:hover b, .index-row.is-active b { color: var(--amber); }

.waveform { width: 100%; height: 20px; margin-top: .5rem; opacity: .8; }

/* The dial is decoration that does something: the needle swings to whichever
   row is live, so the panel reads as one instrument instead of a picture. */
.dial { display: grid; justify-items: center; gap: .5rem; width: 190px; }
.dial-label, .dial-ends {
  margin: 0;
  font: 400 .56rem/1 var(--mono);
  letter-spacing: .2em; text-transform: uppercase;
  color: var(--sand-dim);
}
.dial-ends { display: flex; justify-content: space-between; width: 100%; }

.dial-stage { position: relative; width: 172px; height: 172px; }
.dial-ticks { position: absolute; inset: 0; width: 100%; height: 100%; }
.dial-pointer {
  position: absolute; top: -2px; left: 50%; transform: translateX(-50%);
  width: 0; height: 0;
  border-left: 5px solid transparent;
  border-right: 5px solid transparent;
  border-top: 7px solid var(--sand);
}

.knob {
  position: absolute; inset: 20px;
  border-radius: 50%;
  background:
    conic-gradient(from 0deg, #6d6d6d, #2f2f2f 12%, #7c7c7c 26%, #3a3a3a 42%,
                   #808080 55%, #333 70%, #767676 85%, #6d6d6d);
  box-shadow: 0 6px 14px rgba(0,0,0,.5), inset 0 0 0 1px rgba(255,255,255,.14);
  display: grid; place-items: center;
}
.knob-face {
  position: relative;
  width: 78%; height: 78%;
  border-radius: 50%;
  background:
    radial-gradient(circle at 34% 26%, #8c8c8c, #4a4a4a 45%, #232323 90%);
  box-shadow: inset 0 1px 2px rgba(255,255,255,.22), inset 0 -3px 8px rgba(0,0,0,.55);
  transform: rotate(-92deg);
  transition: transform .45s cubic-bezier(.22,.9,.28,1);
}
.knob-mark {
  position: absolute; top: 9%; left: 50%;
  width: 3px; height: 34%;
  margin-left: -1.5px;
  border-radius: 2px;
  background: #efe7d1;
  box-shadow: 0 0 6px rgba(239,231,209,.45);
}

.panel-foot {
  display: flex; align-items: flex-end; justify-content: space-between;
  gap: 1rem;
  margin-top: 1.2rem;
  padding: 0 .6rem;
}
.panel-list {
  margin: 0;
  font: 400 .58rem/1.75 var(--mono);
  letter-spacing: .16em; text-transform: uppercase;
  color: var(--sand-dim);
}
.plate {
  display: grid; gap: .3rem;
  padding: .75rem 1rem;
  background: rgba(0,0,0,.22);
  border: 1px solid rgba(0,0,0,.32);
  font: 400 .58rem/1 var(--mono);
  letter-spacing: .18em; text-transform: uppercase;
  color: var(--sand-dim);
}
.plate-rule { height: 1px; background: rgba(217,208,182,.3); }

/* -------------------------------------------------------------- logbook */
.logbook {
  display: grid;
  grid-template-columns: minmax(0, 300px) minmax(0, 1fr);
  gap: clamp(1.5rem, 4vw, 3.5rem);
  align-items: center;
  padding: clamp(2.6rem, 5.5vw, 4.5rem) clamp(1.1rem, 3.4vw, 3rem);
  background: var(--ink);
  color: var(--sand);
}
.logbook-art { justify-self: center; }
.logbook-art svg { width: 100%; height: auto; }
.logbook h2 { color: #f2ebd9; }
.logbook p { color: #c3bca9; max-width: 46rem; }
.logbook .eyebrow { color: var(--amber); }

.logbook-points {
  display: grid; gap: .35rem;
  margin: 1.2rem 0 1.6rem; padding: 0;
  list-style: none;
  font: 400 .82rem/1.4 var(--mono);
  letter-spacing: .04em;
  color: #cdc5b0;
}
.logbook-points li { padding-left: 1.5rem; position: relative; }
.logbook-points li::before {
  content: ""; position: absolute; left: 0; top: .55em;
  width: 10px; height: 1px; background: var(--amber);
}

/* ------------------------------------------------------------- sections */
.section { padding: clamp(2.8rem, 6vw, 5rem) clamp(1.1rem, 3.4vw, 3rem); }

.sec-head {
  display: flex; align-items: flex-end; justify-content: space-between;
  gap: 2rem; flex-wrap: wrap;
  padding-bottom: 1.6rem;
  border-bottom: 1px solid var(--paper-line);
  margin-bottom: 2rem;
}
.sec-note {
  margin: 0; text-align: right;
  font: 400 .6rem/1.7 var(--mono);
  letter-spacing: .18em; text-transform: uppercase;
  color: var(--ink-faint);
}

.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.4rem; }
.card {
  display: grid; grid-template-columns: 40% 1fr; align-items: stretch;
  gap: 1rem;
  padding: .85rem;
  background: #f5f0e4;
  border: 1px solid var(--paper-line);
}
.card-copy { display: flex; flex-direction: column; padding: .35rem .4rem .4rem 0; }
.card-copy p { margin: 0 0 1rem; font-size: .88rem; color: var(--ink-mid); }
.card-copy a {
  margin-top: auto;
  font: 600 .7rem/1 var(--mono);
  letter-spacing: .14em; text-transform: uppercase;
  color: var(--rust); text-decoration: none;
}
.card-copy a:hover { text-decoration: underline; }

/* A drawing frame rather than a stock photograph. It says a picture belongs
   here and none has been taken yet, which is true. */
.shot {
  position: relative;
  min-height: 152px;
  background:
    repeating-linear-gradient(135deg, rgba(29,27,23,.05) 0 8px, transparent 8px 16px),
    var(--paper-warm);
  border: 1px solid var(--paper-line);
}
.shot::after {
  content: attr(data-label);
  position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%);
  font: 400 .55rem/1 var(--mono);
  letter-spacing: .16em; text-transform: uppercase;
  color: var(--ink-faint);
  white-space: nowrap;
}

/* ---------------------------------------------------------------- tools */
.tools {
  display: grid; grid-template-columns: minmax(0, 38%) minmax(0, 1fr);
  gap: clamp(1.6rem, 4vw, 3.5rem);
  background: var(--olive); color: var(--sand);
}
.tools h2 { color: #f0e9d6; }
.tools .eyebrow { color: var(--amber); }
.tools-intro p { color: #cbc4ae; }

.tool-rows { display: grid; gap: .8rem; align-content: start; }
.tool-row {
  display: grid; grid-template-columns: 3.2rem 1fr auto;
  align-items: center; gap: 1.1rem;
  padding: 1.1rem 1.2rem;
  text-decoration: none; color: inherit;
  background: rgba(0,0,0,.2);
  border: 1px solid rgba(0,0,0,.28);
  transition: background .15s ease;
}
a.tool-row:hover { background: rgba(0,0,0,.34); }
.tool-tag {
  display: grid; place-items: center;
  width: 3.2rem; height: 2.5rem;
  font: 600 .64rem/1 var(--mono); letter-spacing: .12em;
  color: var(--amber);
  border: 1px solid rgba(216,162,74,.45);
}
.tool-row span strong { display: block; font: 600 .95rem/1.3 var(--sans); color: #f0e9d6; }
.tool-row span { font-size: .84rem; color: #c0b9a4; }
.tool-row em {
  font: 600 .66rem/1 var(--mono); font-style: normal;
  letter-spacing: .16em; text-transform: uppercase; color: var(--amber);
}
.tool-row em.soon { color: var(--sand-dim); }

/* ------------------------------------------------------------ downloads */
.dl-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; }
.dl { padding: 1.6rem 1.6rem 1.6rem 0; border-right: 1px solid var(--paper-line); }
.dl:last-child { border-right: 0; }
.dl:not(:first-child) { padding-left: 1.6rem; }
.dl i {
  display: block; margin-bottom: .8rem;
  font: 400 .68rem/1 var(--mono); font-style: normal;
  letter-spacing: .16em; color: var(--rust);
}
.dl p { margin: 0 0 1rem; font-size: .88rem; color: var(--ink-mid); }
.dl a {
  font: 600 .7rem/1 var(--mono);
  letter-spacing: .14em; text-transform: uppercase;
  border-bottom: 1px solid var(--ink);
  text-decoration: none; padding-bottom: 2px;
}

/* ---------------------------------------------------------------- notes */
.notes {
  display: grid; grid-template-columns: auto minmax(0, 1fr);
  gap: clamp(1.6rem, 4vw, 3.5rem);
  align-items: center;
  background: #d9cca4;
}
.notes p { color: #4a4433; max-width: 44rem; }
.stamp {
  display: grid; place-items: center; align-content: center;
  width: 168px; height: 168px; border-radius: 50%;
  border: 1px solid rgba(74,68,51,.5);
  color: #4a4433;
}
.stamp span { font: 400 .62rem/1 var(--mono); letter-spacing: .3em; text-transform: uppercase; }
.stamp strong { font: 700 2.1rem/1 var(--display); letter-spacing: .06em; text-transform: uppercase; }
.textlink {
  display: inline-block; margin-top: 1.2rem;
  font: 600 .72rem/1 var(--mono);
  letter-spacing: .16em; text-transform: uppercase;
  border-bottom: 1px solid currentColor; text-decoration: none; padding-bottom: 3px;
}

/* ----------------------------------------------------------------- foot */
.site-foot {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1.5rem; flex-wrap: wrap;
  padding: 2rem clamp(1.1rem, 3.4vw, 3rem);
  background: var(--ink); color: var(--sand-dim);
  font: 400 .78rem/1.5 var(--sans);
}
.foot-call { display: flex; align-items: baseline; gap: .9rem; }
.foot-call strong { font: 700 1.5rem/1 var(--display); color: #f0e9d6; }
.foot-call span { font: 400 .58rem/1 var(--mono); letter-spacing: .2em; text-transform: uppercase; }
.site-foot p { margin: 0; }
.site-foot > a {
  font: 600 .68rem/1 var(--mono); letter-spacing: .16em; text-transform: uppercase;
  text-decoration: none; border-bottom: 1px solid currentColor; padding-bottom: 3px;
}

/* ------------------------------------------------------------ responsive */
@media (max-width: 1180px) {
  .stack { display: none; }
}

@media (max-width: 1024px) {
  .masthead { grid-template-columns: 1fr auto; gap: 1rem; }
  .mainnav, .masthead-tag { display: none; }
  .menu-toggle { display: grid; }
  .mainnav-mobile {
    display: none;
    background: var(--ink); color: var(--sand);
    border-bottom: 1px solid rgba(0,0,0,.4);
  }
  .menu-open + .mainnav-mobile { display: grid; }
  .mainnav-mobile a {
    display: grid; grid-template-columns: 2.4rem 1fr; gap: .6rem;
    padding: 1rem clamp(1.1rem, 3.4vw, 3rem);
    text-decoration: none;
    font: 600 .78rem/1 var(--mono);
    letter-spacing: .18em; text-transform: uppercase;
    border-bottom: 1px solid rgba(217,208,182,.14);
  }
  .mainnav-mobile a i { font-style: normal; color: var(--rust); }
  .hero { grid-template-columns: 1fr; }
  .panel { max-width: 560px; }
  .logbook, .tools, .notes { grid-template-columns: 1fr; }
  .cards { grid-template-columns: 1fr; }
  .card { grid-template-columns: 34% 1fr; }
  .dl-grid { grid-template-columns: 1fr; }
  .dl { padding: 1.4rem 0; border-right: 0; border-bottom: 1px solid var(--paper-line); }
  .dl:not(:first-child) { padding-left: 0; }
  .dl:last-child { border-bottom: 0; }
  .logbook-art { max-width: 200px; }
}

@media (max-width: 720px) {
  .brand-lines { display: none; }
  .tagline { flex-wrap: wrap; gap: .55rem; }
  .tagline-rule { width: 48px; }
  .tool-row { grid-template-columns: 3.2rem 1fr; row-gap: .6rem; }
  .tool-row em { grid-column: 2; justify-self: start; }
  .panel-body { grid-template-columns: 1fr; justify-items: center; }
  .panel-foot { flex-direction: column; align-items: flex-start; }
  .card { grid-template-columns: 1fr; }
  .shot { min-height: 150px; }
  .notes { justify-items: start; }
  .site-foot { justify-content: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition-duration: .01ms !important; animation-duration: .01ms !important; }
}

/* ------------------------------------------------------------ inner pages */
.pagehead {
  padding: clamp(2.6rem, 6vw, 4.5rem) clamp(1.1rem, 3.4vw, 3rem) 0;
}
.pagehead h1 {
  margin: 0;
  font: 700 clamp(2.6rem, 6vw, 4.6rem)/.92 var(--display);
  letter-spacing: .01em;
  text-transform: uppercase;
}
.pagelede {
  max-width: 44rem;
  margin: 1.1rem 0 0;
  font-size: clamp(1rem, 1.7vw, 1.16rem);
  color: var(--ink-mid);
}

.hint {
  max-width: 56rem;
  margin: 0 0 1.8rem;
  color: var(--ink-mid);
  font-size: .94rem;
}
.hint a { color: var(--rust); }

/* The file list is a spec sheet, not a card wall: what it is, how long it
   runs, how big the file is, and one button. */
.filelist { list-style: none; margin: 0; padding: 0; display: grid; gap: 0; }
.filelist li {
  display: grid;
  grid-template-columns: 8.5rem minmax(0, 1fr);
  gap: clamp(1rem, 3vw, 2.5rem);
  padding: 1.6rem 0;
  border-top: 1px solid var(--paper-line);
}
.filelist li:last-child { border-bottom: 1px solid var(--paper-line); }
.filelist p { margin: 0 0 1.1rem; font-size: .9rem; color: var(--ink-mid); max-width: 52rem; }

.fmeta {
  display: grid; gap: .4rem; align-content: start;
  font: 400 .62rem/1 var(--mono);
  letter-spacing: .16em; text-transform: uppercase;
  color: var(--ink-faint);
}
.ftype {
  justify-self: start;
  padding: .45rem .6rem;
  color: var(--rust);
  border: 1px solid rgba(184,80,31,.45);
  font-weight: 600;
}

.dlbtn {
  display: inline-block;
  padding: .8rem 1.4rem;
  background: var(--rust); color: #fbf6ea;
  font: 600 .7rem/1 var(--mono);
  letter-spacing: .16em; text-transform: uppercase;
  text-decoration: none;
}
.dlbtn:hover { background: var(--rust-deep); }

.printing {
  display: grid; grid-template-columns: minmax(0, 34%) minmax(0, 1fr);
  gap: clamp(1.6rem, 4vw, 3.5rem);
  background: var(--olive); color: var(--sand);
}
.printing h2 { color: #f0e9d6; }
.printing .eyebrow { color: var(--amber); }
.printing-copy p { color: #cbc4ae; }
.steps { list-style: none; margin: 0; padding: 0; display: grid; gap: .8rem; align-content: start; }
.steps li {
  display: grid; grid-template-columns: 3rem 1fr; gap: 1rem;
  padding: 1rem 1.2rem;
  background: rgba(0,0,0,.2);
  border: 1px solid rgba(0,0,0,.28);
  font-size: .86rem; color: #c0b9a4;
}
.steps span { font: 400 .68rem/1.6 var(--mono); letter-spacing: .14em; color: var(--amber); }
.steps strong { display: block; font: 600 .95rem/1.4 var(--sans); color: #f0e9d6; }

.terms { background: var(--paper-warm); }
.terms p { max-width: 52rem; color: var(--ink-mid); }
.terms a { color: var(--rust); }
.fineprint { font-size: .82rem; color: var(--ink-faint); margin-top: 1rem; }

@media (max-width: 720px) {
  .filelist li { grid-template-columns: 1fr; }
  .fmeta { grid-auto-flow: column; justify-content: start; gap: 1rem; align-items: center; }
  .printing { grid-template-columns: 1fr; }
  .steps li { grid-template-columns: 2.2rem 1fr; }
}

/* A card with nothing to link to says so, rather than offering a link that
   goes nowhere. */
.cstat {
  margin: auto 0 0;
  font-size: .8rem;
  line-height: 1.45;
  color: var(--ink-faint);
}
.cstat span {
  display: inline-block;
  margin-right: .45rem;
  padding: .25rem .5rem;
  font: 600 .6rem/1 var(--mono);
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--rust);
  border: 1px solid rgba(184,80,31,.4);
}
.cstat.standalone { margin-top: 1.2rem; max-width: 34rem; }
.notes .cstat { color: #4a4433; }
.notes .cstat span { color: #6b3116; border-color: rgba(107,49,22,.45); }