/* Profitmaster Displays — Brand Standards site.
   Direction: "Drawn, then built." White space leads; the drawing set is the frame. */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { transition: none !important; animation: none !important; } }
body {
  margin: 0; background: var(--paper); color: var(--ink);
  font: 400 var(--t-body)/1.6 var(--font-text);
  font-feature-settings: "kern", "liga"; -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 2px solid var(--ink); outline-offset: 3px; }
.skip { position: absolute; left: -9999px; top: 0; background: var(--ink); color: var(--paper); padding: var(--s3) var(--s4); z-index: 20; }
.skip:focus { left: var(--s4); top: var(--s4); }
.mono { font-family: var(--font-mono); }
.micro { font: 500 var(--t-micro)/1.4 var(--font-mono); letter-spacing: .08em; text-transform: uppercase; }

/* ---------- Frame ---------- */
.frame { display: grid; grid-template-columns: var(--side) minmax(0, 1fr); min-height: 100vh; }
.side {
  position: sticky; top: 0; height: 100vh; overflow-y: auto;
  border-right: 1px solid var(--rule); padding: var(--s6) var(--s5) var(--s7);
  display: flex; flex-direction: column; gap: var(--s6); background: var(--paper);
}
.side .brand { display: block; text-decoration: none; }
.side .brand img { width: 176px; }
.logo-b { display: var(--logo-black); } .logo-w { display: var(--logo-white); }
.side .brand-sub { margin-top: var(--s3); color: var(--ink-3); }
.nav { display: flex; flex-direction: column; gap: var(--s5); }
.nav h2 { margin: 0 0 var(--s2); color: var(--ink-3); font: 500 var(--t-micro)/1.4 var(--font-mono); letter-spacing: .1em; text-transform: uppercase; }
.nav ol { list-style: none; margin: 0; padding: 0; }
.nav a { display: grid; grid-template-columns: 2.1rem 1fr; gap: var(--s2); padding: 5px 0; text-decoration: none; font-size: .9rem; color: var(--ink-2); }
.nav a .n { font: 400 .72rem/1.9 var(--font-mono); color: var(--ink-3); }
.nav a:hover { color: var(--ink); }
.nav a[aria-current="page"] { color: var(--ink); font-weight: 600; }
.nav a[aria-current="page"] .n { color: var(--ink); }
.theme { display: flex; border: 1px solid var(--rule-2); width: max-content; margin-top: auto; }
.theme button { font: 500 var(--t-micro)/1 var(--font-mono); letter-spacing: .08em; text-transform: uppercase; background: none; color: var(--ink-2); border: 0; padding: 10px 12px; min-height: 36px; cursor: pointer; }
.theme button[aria-pressed="true"] { background: var(--ink); color: var(--paper); }

.menu { display: none; }
main { min-width: 0; }
.wrap { max-width: 1180px; margin: 0 auto; padding-inline: clamp(20px, 5vw, 72px); padding-block: 0 var(--s9); }

/* ---------- Sheet strip (the drawing header) ---------- */
.strip {
  display: flex; flex-wrap: wrap; gap: var(--s2) var(--s6); justify-content: space-between;
  border-bottom: 1px solid var(--rule-strong); padding: var(--s5) 0 var(--s3); color: var(--ink-3);
}
.strip b { color: var(--ink); font-weight: 500; }

/* ---------- Page head ---------- */
.head { padding: clamp(56px, 9vw, 120px) 0 clamp(40px, 6vw, 72px); max-width: 60rem; }
.head .sec { color: var(--ink-3); margin: 0 0 var(--s5); }
h1 { font: 700 var(--t-h1)/1.04 var(--font-display); letter-spacing: -.02em; margin: 0; text-wrap: balance; }
.display { font-size: var(--t-display); font-weight: 800; letter-spacing: -.028em; line-height: .98; }
.lede { font-size: var(--t-lede); line-height: 1.5; color: var(--ink-2); max-width: 46ch; margin: var(--s5) 0 0; text-wrap: pretty; }
.lede strong { color: var(--ink); font-weight: 600; }

/* ---------- Sections ---------- */
section.s { padding-top: clamp(48px, 7vw, 96px); }
section.s + section.s { border-top: 1px solid var(--rule); margin-top: clamp(48px, 7vw, 96px); }
.s-head { display: grid; grid-template-columns: minmax(0, 1fr); gap: var(--s3); margin-bottom: var(--s6); max-width: 52rem; }
.s-head .no { color: var(--ink-3); }
h2 { font: 700 var(--t-h2)/1.15 var(--font-display); letter-spacing: -.012em; margin: 0; text-wrap: balance; }
h3 { font: 600 var(--t-h3)/1.3 var(--font-text); margin: 0 0 var(--s2); }
h4 { font: 500 var(--t-micro)/1.4 var(--font-mono); letter-spacing: .1em; text-transform: uppercase; color: var(--ink-3); margin: 0 0 var(--s3); }
.prose { max-width: var(--measure); }
.prose p, .prose ul, .prose ol { margin: 0 0 var(--s4); }
.prose ul, .prose ol { padding-left: 1.15rem; }
.prose li { margin: 0 0 var(--s2); }
.prose li::marker { color: var(--ink-3); }
p { text-wrap: pretty; }
.muted { color: var(--ink-2); }
.small { font-size: var(--t-small); }

/* ---------- Grids ---------- */
.cols-2, .cols-3, .cols-4 { display: grid; gap: clamp(24px, 3.4vw, 48px); }
.cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.split { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: clamp(28px, 5vw, 80px); align-items: start; }
.split.rev { grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); }
.stack > * + * { margin-top: var(--s5); }

/* ---------- Plates (images) ---------- */
.plate { margin: 0; }
.plate .ground { background: var(--plate); padding: clamp(20px, 4vw, 48px); display: grid; place-items: center; }
.plate.white .ground { background: #FFFFFF; }
.plate.bare .ground { padding: 0; background: none; }
.plate .ground img { max-height: 560px; width: auto; object-fit: contain; }
.plate.tall .ground img { max-height: 680px; }
.plate.fill .ground img { width: 100%; max-height: none; }
.plate figcaption, .cap { display: flex; flex-wrap: wrap; gap: 2px var(--s4); padding-top: var(--s3); font: 400 .78rem/1.5 var(--font-mono); color: var(--ink-3); }
.plate figcaption b, .cap b { color: var(--ink); font-weight: 500; }

/* ---------- Specs ---------- */
.specs { display: grid; grid-template-columns: max-content 1fr; gap: 0; margin: 0; border-top: 1px solid var(--rule-strong); font-size: var(--t-small); }
.specs dt, .specs dd { margin: 0; padding: 10px 0; border-bottom: 1px solid var(--rule); }
.specs dt { font: 500 var(--t-micro)/1.9 var(--font-mono); letter-spacing: .08em; text-transform: uppercase; color: var(--ink-3); padding-right: var(--s6); }
.specs dd { font-family: var(--font-mono); font-size: .84rem; }

.tbl { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font-size: var(--t-small); font-variant-numeric: tabular-nums; }
th, td { text-align: left; vertical-align: top; padding: 11px var(--s4) 11px 0; border-bottom: 1px solid var(--rule); }
thead th { font: 500 var(--t-micro)/1.4 var(--font-mono); letter-spacing: .08em; text-transform: uppercase; color: var(--ink-3); border-bottom: 1px solid var(--rule-strong); }
td.m, th.m { font-family: var(--font-mono); font-size: .8rem; }

/* ---------- Flags ---------- */
.flag { display: inline-block; font: 600 .66rem/1 var(--font-mono); letter-spacing: .1em; text-transform: uppercase; padding: 5px 7px 4px; border: 1px solid currentColor; vertical-align: .15em; }
.flag.solid { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.note { border-left: 2px solid var(--ink); padding: var(--s2) 0 var(--s2) var(--s4); margin: var(--s5) 0; max-width: var(--measure); font-size: var(--t-small); color: var(--ink-2); }
.note b { color: var(--ink); }

/* ---------- Principles ---------- */
.principles { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--rule-strong); }
.principles > li { display: grid; grid-template-columns: 4.5rem minmax(0, 1fr) minmax(0, 15rem); gap: var(--s4) var(--s6); padding: var(--s6) 0; border-bottom: 1px solid var(--rule); }
.principles .pn { font: 700 2.2rem/1 var(--font-display); letter-spacing: -.02em; }
.principles h3 { font: 700 1.35rem/1.2 var(--font-display); margin-bottom: var(--s3); }
.principles p { margin: 0 0 var(--s3); max-width: 58ch; color: var(--ink-2); }
.principles .ud { font: 400 .76rem/1.6 var(--font-mono); color: var(--ink-3); }
.principles .ud b { display: block; color: var(--ink); font-weight: 500; }

/* ---------- Do / Don't ---------- */
.pairs { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(20px, 3vw, 40px); }
.pair { margin: 0; }
.pair .ground { background: var(--plate); aspect-ratio: 4 / 3; display: grid; place-items: center; padding: 8%; position: relative; overflow: hidden; }
.pair .ground img { max-height: 100%; width: auto; }
.pair figcaption { padding-top: var(--s3); font-size: var(--t-small); color: var(--ink-2); }
.pair figcaption .v { font: 600 var(--t-micro)/1 var(--font-mono); letter-spacing: .1em; text-transform: uppercase; color: var(--ink); display: block; margin-bottom: 6px; }
.pair.dont figcaption .v::before { content: "✕ "; } .pair.do figcaption .v::before { content: "✓ "; }

/* ---------- Swatches ---------- */
.ramp { display: grid; grid-template-columns: repeat(11, minmax(0, 1fr)); border: 1px solid var(--rule-2); }
.ramp .chip { aspect-ratio: 1 / 1.35; display: flex; flex-direction: column; justify-content: flex-end; padding: 8px; font: 500 .62rem/1.35 var(--font-mono); }
.ramp .chip span { display: block; }
.big-swatch { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--s5); }
.big-swatch .sw { border: 1px solid var(--rule-2); }
.big-swatch .sw .c { height: 180px; }
.big-swatch .sw dl { margin: 0; padding: var(--s4); display: grid; grid-template-columns: max-content 1fr; gap: 4px var(--s4); font: 400 .78rem/1.5 var(--font-mono); }
.big-swatch .sw dt { color: var(--ink-3); } .big-swatch .sw dd { margin: 0; }

/* ---------- Type specimens ---------- */
.specimen { border-top: 1px solid var(--rule-strong); padding: var(--s5) 0; display: grid; grid-template-columns: 11rem minmax(0, 1fr); gap: var(--s5); align-items: baseline; }
.specimen + .specimen { border-top: 1px solid var(--rule); }
.specimen .lab { font: 400 .74rem/1.6 var(--font-mono); color: var(--ink-3); }
.specimen .lab b { display: block; color: var(--ink); font-weight: 500; }

/* ---------- Schematic texture ---------- */
.tex { position: relative; isolation: isolate; }
.tex::before {
  content: ""; position: absolute; z-index: -1; pointer-events: none;
  inset: 0 0 0 42%; background: url("../texture/schematic-rack.jpg") no-repeat right -12% top 8% / auto 128%;
  opacity: var(--texture-alpha); mix-blend-mode: var(--texture-blend); filter: var(--texture-filter);
}
.tex.left::before { inset: 0 45% 0 0; background-position: left -30% top 10%; }
.tex.band::before { inset: 0; background-size: 58% auto; background-position: right -6% center; }

/* ---------- Index (home) ---------- */
.hero { padding: clamp(64px, 11vw, 160px) 0 clamp(56px, 8vw, 112px); }
.hero .mark { width: min(560px, 82%); }
.hero h1 { margin-top: clamp(48px, 7vw, 88px); max-width: 16ch; }
.statement { font: 600 clamp(1.3rem, 2.2vw, 1.75rem)/1.35 var(--font-display); letter-spacing: -.01em; max-width: 34ch; margin: 0; text-wrap: balance; }
.index { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0 clamp(24px, 4vw, 56px); }
.index section h2 { font: 500 var(--t-micro)/1.4 var(--font-mono); letter-spacing: .1em; text-transform: uppercase; color: var(--ink-3); border-bottom: 1px solid var(--rule-strong); padding-bottom: var(--s3); margin-bottom: 0; }
.index ol { list-style: none; margin: 0 0 var(--s7); padding: 0; }
.index a { display: grid; grid-template-columns: 2.4rem 1fr; padding: 11px 0; border-bottom: 1px solid var(--rule); text-decoration: none; }
.index a .n { font: 400 .76rem/1.9 var(--font-mono); color: var(--ink-3); }
.index a:hover .t { text-decoration: underline; }
.index a small { display: block; color: var(--ink-3); font-size: .8rem; }

.highlights { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(24px, 3.4vw, 48px); border-top: 1px solid var(--rule-strong); padding-top: var(--s5); }
.highlights h3 { font: 700 1.2rem/1.2 var(--font-display); }
.highlights p { margin: 0; color: var(--ink-2); font-size: .95rem; }

/* ---------- Document mockups ---------- */
.doc { background: #FFFFFF; color: #1A1A1A; box-shadow: 0 1px 0 rgba(0,0,0,.04), 0 18px 40px -24px rgba(0,0,0,.35); position: relative; overflow: hidden; font-family: var(--font-text); }
.doc.letter { aspect-ratio: 8.5 / 11; padding: 7% 8%; }
.doc.card { aspect-ratio: 3.5 / 2; padding: 7% 8%; }
.doc.slide { aspect-ratio: 16 / 9; padding: 5% 6%; }
.doc.label { aspect-ratio: 4 / 2; padding: 5% 6%; border: 1px solid #E6E6E6; }
.doc .dl { width: 42%; }
.doc .dl-sm { width: 30%; }
.doc .rule { height: 1px; background: #1A1A1A; margin: 4% 0; }
.doc .hair { height: 1px; background: #E6E6E6; margin: 2.5% 0; }
.doc .t { font: 700 1em/1.1 var(--font-display); letter-spacing: -.01em; }
.doc .m { font: 400 .55em/1.5 var(--font-mono); color: #737373; letter-spacing: .04em; }
.doc .b { font-size: .6em; line-height: 1.55; color: #333333; }
.doc .field { border-bottom: 1px solid #CCCCCC; height: 1.6em; margin-bottom: .6em; position: relative; }
.doc .field span { position: absolute; left: 0; bottom: 2px; font: 500 .45em/1 var(--font-mono); letter-spacing: .08em; text-transform: uppercase; color: #737373; }
.doc .foot { position: absolute; left: 8%; right: 8%; bottom: 4%; display: flex; justify-content: space-between; font: 400 .45em/1.4 var(--font-mono); color: #737373; border-top: 1px solid #E6E6E6; padding-top: 1.5%; }
.doc .texbg { position: absolute; inset: 0; background: url("../texture/schematic-rack.jpg") no-repeat right -18% bottom -12% / 62% auto; opacity: .07; mix-blend-mode: multiply; pointer-events: none; }
.doc.dark { background: #0E0E0E; color: #EDEDED; }
.doc.dark .texbg { filter: invert(1); mix-blend-mode: screen; opacity: .09; }
.mock-wrap { container-type: inline-size; }
.mock-wrap .doc { font-size: clamp(9px, 3.4cqi, 20px); }

/* ---------- Title block (footer) ---------- */
.titleblock { margin-top: var(--s9); border: 1px solid var(--rule-strong); display: grid; grid-template-columns: minmax(0, 2.2fr) repeat(4, minmax(0, 1fr)) minmax(0, 1.4fr); font: 400 .74rem/1.4 var(--font-mono); }
.titleblock > div { padding: 10px 12px; border-right: 1px solid var(--rule-strong); min-height: 64px; display: flex; flex-direction: column; justify-content: space-between; gap: 6px; }
.titleblock > div:last-child { border-right: 0; }
.titleblock .k { font-size: .62rem; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-3); }
.titleblock .v { color: var(--ink); }
.titleblock .wm img { width: 100%; max-width: 150px; }
.pager { display: grid; grid-template-columns: 1fr 1fr; border: 1px solid var(--rule-strong); border-top: 0; }
.pager a { padding: 16px 12px; text-decoration: none; font-size: .92rem; min-height: 44px; }
.pager a + a { border-left: 1px solid var(--rule-strong); text-align: right; }
.pager a .k { display: block; font: 500 .62rem/1.4 var(--font-mono); letter-spacing: .1em; text-transform: uppercase; color: var(--ink-3); }
.pager a:hover { background: var(--paper-2); }

details.more { border-top: 1px solid var(--rule); margin-top: var(--s5); }
details.more > summary { cursor: pointer; list-style: none; padding: 14px 0; display: flex; justify-content: space-between; gap: var(--s4); min-height: 44px; align-items: center; font-weight: 600; }
details.more > summary::-webkit-details-marker { display: none; }
details.more > summary::after { content: "+"; font: 400 1.2rem/1 var(--font-mono); color: var(--ink-3); }
details.more[open] > summary::after { content: "–"; }
details.more .c { font: 400 .74rem/1 var(--font-mono); color: var(--ink-3); margin-left: auto; }

.dl-list { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--rule-strong); }
.dl-list li { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: var(--s4); padding: 14px 0; border-bottom: 1px solid var(--rule); align-items: center; }
.dl-list a.btn { font: 500 .72rem/1 var(--font-mono); letter-spacing: .08em; text-transform: uppercase; border: 1px solid var(--ink); padding: 11px 14px; text-decoration: none; min-height: 40px; display: inline-flex; align-items: center; }
.dl-list a.btn:hover { background: var(--ink); color: var(--paper); }

/* ---------- Responsive ---------- */
@media (max-width: 1100px) {
  .cols-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .principles > li { grid-template-columns: 3.5rem minmax(0, 1fr); }
  .principles .ud { grid-column: 2; }
}
@media (max-width: 960px) {
  .frame { grid-template-columns: 1fr; }
  .side { position: static; height: auto; border-right: 0; border-bottom: 1px solid var(--rule); padding: var(--s4) clamp(20px, 5vw, 72px); flex-direction: row; align-items: center; justify-content: space-between; gap: var(--s4); }
  .side .brand img { width: 140px; }
  .side .brand-sub, .side > .nav, .side > .theme { display: none; }
  .menu { display: block; }
  .menu > summary { list-style: none; cursor: pointer; font: 500 .72rem/1 var(--font-mono); letter-spacing: .1em; text-transform: uppercase; border: 1px solid var(--ink); padding: 12px 14px; min-height: 44px; display: flex; align-items: center; }
  .menu > summary::-webkit-details-marker { display: none; }
  .menu[open] > .menu-panel { position: absolute; left: 0; right: 0; top: 72px; background: var(--paper); border-bottom: 1px solid var(--rule); padding: var(--s5) clamp(20px, 5vw, 72px) var(--s7); z-index: 30; max-height: 80vh; overflow-y: auto; display: flex; flex-direction: column; gap: var(--s5); }
  .menu-panel .nav { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--s5); }
  .side { position: relative; }
  .index { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .titleblock { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .titleblock > div { border-bottom: 1px solid var(--rule-strong); }
}
@media (max-width: 720px) {
  .cols-2, .cols-3, .cols-4, .split, .split.rev, .pairs, .highlights, .index, .big-swatch { grid-template-columns: 1fr; }
  .ramp { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .specimen { grid-template-columns: 1fr; gap: var(--s2); }
  .principles > li { grid-template-columns: 1fr; }
  .principles .ud { grid-column: auto; }
  .menu-panel .nav { grid-template-columns: 1fr; }
  .titleblock { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .tex::before { inset: 0; opacity: calc(var(--texture-alpha) * .7); }
}
@media print {
  .side, .pager, .skip { display: none; }
  .frame { display: block; }
}