/* Style K — Plex Ledger — shared sheet for the data-platform case pages.
   Tokens and class names follow export/docs/design/doc-styles/template-K-plex-ledger.html.
   Additions for this case are marked "case:" below. Change a token here → mirror in the template. */

:root {
  --ink: #111111;
  --ink-2: #2B2B29;
  --ink-3: #4A4A46;
  --muted: #5C5C58;
  --bg: #FFFFFF;
  --card: #ECECE8;
  --line: #D8D8D2;
  --line-2: #CFCFC9;
  --accent: #E8553A;
  --accent-ink: #C43D22;
  --accent-deep: #992E19;
  --mono: "IBM Plex Mono", ui-monospace, Menlo, monospace;
  --sans: "IBM Plex Sans", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --gutter: clamp(16px, 5vw, 120px);
  --max: 1440px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 110px; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font-family: var(--sans); font-size: 16px; line-height: 1.5;
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
}
a { color: var(--accent-ink); }
a:hover { color: var(--accent-deep); }
img, svg { max-width: 100%; display: block; }
strong, b { font-weight: 600; }
code { font-family: var(--mono); font-size: 0.9em; background: var(--card); padding: 1px 5px; }

.wrap { width: 100%; max-width: calc(var(--max) + 2 * var(--gutter)); margin: 0 auto; padding: 0 var(--gutter); }
.stack { display: flex; flex-direction: column; gap: 20px; }
main > section { padding: clamp(56px, 8vw, 104px) 0 0; }
main > section:first-child { padding-top: clamp(40px, 6vw, 88px); }

/* ---------- type ---------- */
.mono { font-family: var(--mono); }
.h1 { font-family: var(--mono); font-weight: 400; font-size: clamp(34px, 4.6vw, 60px); line-height: 1.12; letter-spacing: -0.025em; margin: 0; text-wrap: balance; }
.h2 { font-family: var(--mono); font-weight: 400; font-size: clamp(27px, 3vw, 40px); line-height: 1.18; letter-spacing: -0.015em; margin: 0; text-wrap: balance; }
.h3 { font-family: var(--mono); font-weight: 400; font-size: clamp(19px, 1.7vw, 22px); line-height: 1.28; margin: 0; text-wrap: balance; }
.eyebrow { font-family: var(--mono); font-size: 12.5px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted); margin: 0; line-height: 1.5; }
.eyebrow.accent { color: var(--accent-ink); }
.lead { font-size: clamp(17px, 1.5vw, 19px); line-height: 1.65; color: var(--ink-2); margin: 0; max-width: 46em; }
.p { font-size: 17px; line-height: 1.65; color: var(--ink-2); margin: 0; max-width: 46em; }
.small { font-size: 15px; line-height: 1.6; color: var(--ink-3); margin: 0; }
.fine { font-size: 13.5px; line-height: 1.6; color: var(--muted); margin: 0; max-width: 60em; }
.num { font-family: var(--mono); font-size: clamp(30px, 3vw, 40px); line-height: 1; letter-spacing: -0.02em; }

/* ---------- header (framed, sticky) ---------- */
.hdr { position: sticky; top: 0; z-index: 50; background: rgba(255,255,255,0.94); backdrop-filter: saturate(1.4) blur(8px); padding-top: 18px; padding-bottom: 10px; }
.hdr-box { border: 1px solid var(--ink); display: flex; align-items: stretch; justify-content: space-between; background: var(--bg); }
.logo { display: flex; align-items: center; padding: 14px 24px; border-right: 1px solid var(--ink); font-family: var(--mono); font-size: 21px; letter-spacing: -0.02em; color: var(--ink); text-decoration: none; }
.logo:hover { color: var(--ink); }
.nav { display: flex; align-items: center; gap: clamp(18px, 2.4vw, 36px); padding: 0 0 0 24px; }
.nav a.navlink { font-family: var(--mono); font-size: 13px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink); text-decoration: none; white-space: nowrap; }
.nav a.navlink:hover, .nav a.navlink[aria-current="page"] { color: var(--accent-ink); }
.nav .btn-cta { align-self: stretch; min-height: 0; border: 0; border-left: 1px solid var(--ink); }
.menu { display: none; }

@media (max-width: 900px) {
  .nav { display: none; }
  .logo { border-right: 0; flex: 1; }
  .menu { display: block; position: relative; }
  .menu summary { list-style: none; cursor: pointer; height: 100%; display: flex; align-items: center; padding: 0 20px; border-left: 1px solid var(--ink); font-family: var(--mono); font-size: 13px; letter-spacing: 0.1em; text-transform: uppercase; }
  .menu summary::-webkit-details-marker { display: none; }
  .menu[open] summary { background: var(--ink); color: #fff; }
  .menu-panel { position: absolute; right: -1px; top: calc(100% + 1px); width: min(300px, calc(100vw - 32px)); background: var(--bg); border: 1px solid var(--ink); display: flex; flex-direction: column; }
  .menu-panel a { padding: 16px 20px; border-bottom: 1px solid var(--line); font-family: var(--mono); font-size: 14px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink); text-decoration: none; }
  .menu-panel a:last-child { border-bottom: 0; background: var(--accent); }
}

/* ---------- buttons ---------- */
.btn, .btno, .btn-cta { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 50px; padding: 0 24px; font-family: var(--mono); font-size: 14px; letter-spacing: 0.06em; text-transform: uppercase; text-decoration: none; border: 1px solid var(--ink); cursor: pointer; transition: background .15s, color .15s, border-color .15s; }
.btn { background: var(--ink); color: #fff; }
.btn:hover { background: var(--accent-ink); border-color: var(--accent-ink); color: #fff; }
.btno { background: transparent; color: var(--ink); }
.btno:hover { background: var(--ink); color: #fff; }
.btn-cta { background: var(--accent); color: var(--ink); }
.btn-cta:hover { background: var(--accent-ink); color: #fff; }
.btns { display: flex; flex-wrap: wrap; gap: 12px; }
.textlink { font-family: var(--mono); font-size: 13.5px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink); text-decoration: none; border-bottom: 1px solid currentColor; padding-bottom: 2px; }
.textlink:hover { color: var(--accent-ink); }

/* ---------- hero ---------- */
.hero { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 0.62fr); gap: clamp(24px, 4vw, 64px); align-items: center; }
.hero-copy { display: flex; flex-direction: column; gap: 26px; }
.hero-art { align-self: stretch; display: flex; align-items: center; }
.hero-art svg { width: 100%; height: auto; }
@media (max-width: 900px) { .hero { grid-template-columns: 1fr; } .hero-art { display: none; } }

.crumbs { font-family: var(--mono); font-size: 12.5px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); margin: 0; display: flex; flex-wrap: wrap; gap: 6px 10px; }
.crumbs a { color: var(--muted); text-decoration: none; }
.crumbs a:hover { color: var(--accent-ink); }

/* ---------- metric strip ---------- */
.metrics { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border: 1px solid var(--ink); }
.metric { padding: 24px 24px 26px; display: flex; flex-direction: column; gap: 10px; border-right: 1px solid var(--ink); }
.metric:last-child { border-right: 0; }
.metric .num { font-size: clamp(32px, 3.4vw, 46px); }
.metric:first-child .num { color: var(--accent-ink); }
@media (max-width: 900px) {
  .metrics { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .metric:nth-child(2) { border-right: 0; }
  .metric:nth-child(-n+2) { border-bottom: 1px solid var(--ink); }
}
@media (max-width: 460px) {
  .metrics { grid-template-columns: 1fr; }
  .metric { border-right: 0; border-bottom: 1px solid var(--ink); }
  .metric:last-child { border-bottom: 0; }
}

/* ---------- section heads ---------- */
.band { position: relative; text-align: center; padding: clamp(28px, 4vw, 48px) 0 clamp(8px, 2vw, 16px); display: flex; flex-direction: column; align-items: center; gap: 16px; }
.band .h2 { font-size: clamp(28px, 3.6vw, 48px); max-width: 22em; }
.band .lead { text-align: center; }
.sec-head { display: flex; flex-direction: column; gap: 16px; margin-bottom: clamp(24px, 3vw, 36px); }
.sub-head { display: flex; flex-direction: column; gap: 10px; margin: clamp(36px, 5vw, 56px) 0 20px; }

/* ---------- grids / cards ---------- */
.grid { display: grid; gap: 24px; }
.g2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.g3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.g4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
@media (max-width: 1100px) { .g4 { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 900px)  { .g3 { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 680px)  { .g2, .g3, .g4 { grid-template-columns: 1fr; } }

.card { background: var(--card); border-top: 7px solid var(--ink); padding: 26px 26px 30px; display: flex; flex-direction: column; gap: 12px; }
.card.hot { border-top-color: var(--accent); }
.card ul, .box ul { margin: 0; padding-left: 18px; display: flex; flex-direction: column; gap: 8px; }
.card li, .box li { font-size: 15px; line-height: 1.55; color: var(--ink-3); }
.box { border: 1px solid var(--line-2); padding: 26px; display: flex; flex-direction: column; gap: 12px; background: var(--bg); }

.split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 0.8fr); gap: clamp(32px, 6vw, 88px); align-items: start; }
.split > * { min-width: 0; }
@media (max-width: 900px) { .split { grid-template-columns: minmax(0, 1fr); } }

.points { display: flex; flex-direction: column; border-top: 1px solid var(--line); }
.point { display: grid; grid-template-columns: 56px minmax(0, 1fr); gap: 16px; padding: 20px 0; border-bottom: 1px solid var(--line); }
.point .n { font-family: var(--mono); color: var(--accent-ink); font-size: 15px; padding-top: 3px; }
.point .p { max-width: 60em; }

.note { border-left: 4px solid var(--accent); padding: 6px 0 6px 26px; font-size: 17px; line-height: 1.65; color: var(--ink-2); margin: 0; max-width: 52em; }
.note-title { font-family: var(--mono); font-size: 13px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--accent-ink); display: block; margin-bottom: 8px; }
.callout { background: var(--ink); color: #F1F0EC; padding: clamp(26px, 3.5vw, 44px); display: flex; flex-direction: column; gap: 14px; }
.callout .h3 { color: #fff; }
.callout p { color: #D6D5CF; margin: 0; font-size: 17px; line-height: 1.65; max-width: 52em; }
.callout a { color: #FF9A84; }
.callout code { background: #2B2B29; color: #F1F0EC; }

/* ---------- tiles ---------- */
.tiles { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.tiles.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
@media (max-width: 1000px) { .tiles { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 640px)  { .tiles, .tiles.two { grid-template-columns: 1fr; } }
.tile { border: 1px solid var(--line-2); border-top: 7px solid var(--ink); padding: 24px 24px 22px; display: flex; flex-direction: column; gap: 12px; text-decoration: none; color: var(--ink); background: var(--bg); transition: border-color .15s, transform .15s; }
.tile:hover { border-color: var(--ink); border-top-color: var(--accent); color: var(--ink); }
.tile.bonus { background: #F6F6F2; border-top-color: var(--line-2); }
.tile .num { margin-top: auto; padding-top: 10px; }
.tile .go { font-family: var(--mono); font-size: 12.5px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); display: flex; justify-content: space-between; gap: 12px; border-top: 1px solid var(--line); padding-top: 12px; margin: 0; }
.tile:hover .go span:last-child { color: var(--accent-ink); }

/* ---------- facts row ---------- */
.facts { display: flex; flex-wrap: wrap; gap: 20px 56px; }
.fact { display: flex; flex-direction: column; gap: 6px; }
.fact .num { font-size: clamp(30px, 3vw, 40px); }

/* ---------- bar chart ---------- */
.bars { display: grid; grid-template-columns: minmax(180px, 360px) minmax(0, 1fr) 110px; gap: 14px 24px; align-items: center; font-size: 16px; }
.bars .bar { height: 26px; background: var(--ink); min-width: 5px; }
.bars .bar.off { background: var(--accent); }
.bars .bar.test { background: #BDBDB6; }
.bars .v { font-family: var(--mono); text-align: right; white-space: nowrap; }
/* case: four-column variant — label | bar | value | drop-rate */
.bars.b4 { grid-template-columns: minmax(180px, 360px) minmax(0, 1fr) 90px 70px; }
.bars .d { font-family: var(--mono); font-size: 13px; color: var(--muted); text-align: right; white-space: nowrap; }
/* case: weight bars — signed values, negative weights in coral */
.bars.w { grid-template-columns: minmax(0, 1fr) minmax(0, 0.7fr) 56px; gap: 10px 18px; font-size: 15px; }
.bars.w .bar { height: 18px; }
.bars.w .v.neg { color: var(--accent-ink); }
@media (max-width: 680px) {
  .bars, .bars.b4 { grid-template-columns: minmax(0, 1fr) auto; gap: 6px 12px; }
  .bars .lbl { grid-column: 1 / -1; padding-top: 10px; }
  .bars.b4 .d { display: none; }
  .bars.w { grid-template-columns: minmax(0, 1fr) 56px; }
  .bars.w .lbl { grid-column: 1 / -1; padding-top: 8px; }
}
.legend { display: flex; flex-wrap: wrap; gap: 8px 24px; }
.legend span { display: inline-flex; align-items: center; gap: 8px; font-size: 14px; color: var(--ink-3); }
.legend i { width: 14px; height: 14px; display: inline-block; }

/* ---------- tables (stack to cards on mobile) ---------- */
.tbl-wrap { border-top: 1px solid var(--ink); }
.tbl { width: 100%; border-collapse: collapse; font-size: 15px; line-height: 1.5; }
.tbl th { text-align: left; font-family: var(--mono); font-size: 12px; font-weight: 400; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); padding: 14px 16px; border-bottom: 1px solid var(--ink); vertical-align: bottom; }
.tbl td { padding: 16px; border-bottom: 1px solid #DEDED8; vertical-align: top; }
.tbl td.reach, .tbl td.n { font-family: var(--mono); white-space: nowrap; font-size: 14px; }
.tbl .grade { font-family: var(--mono); font-size: 12px; letter-spacing: 0.08em; padding: 3px 8px; white-space: nowrap; display: inline-block; }
.grade { font-family: var(--mono); font-size: 12px; letter-spacing: 0.08em; padding: 3px 8px; white-space: nowrap; display: inline-block; }
.grade.strong { background: var(--ink); color: #fff; }
.grade.partial { background: var(--accent); color: var(--ink); }
.grade.weak { background: var(--card); color: var(--ink); }
.grade.na { background: transparent; color: var(--muted); outline: 1px solid var(--line-2); }
.tbl tr.dim td { color: var(--muted); }
@media (max-width: 760px) {
  .tbl thead { display: none; }
  .tbl, .tbl tbody, .tbl tr, .tbl td { display: block; width: 100%; }
  .tbl tr { border-bottom: 1px solid var(--line-2); padding: 14px 0; }
  .tbl td { border: 0; padding: 4px 0; display: grid; grid-template-columns: 120px minmax(0, 1fr); gap: 12px; }
  .tbl td::before { content: attr(data-label); font-family: var(--mono); font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); padding-top: 3px; }
  .tbl td.reach, .tbl td.n { white-space: normal; }
}

/* ---------- framed two-cell block (offer / brief / contact) ---------- */
.formblock { border: 1px solid var(--ink); display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 520px); }
.formblock .copy { padding: clamp(28px, 4vw, 56px); display: flex; flex-direction: column; gap: 20px; border-right: 1px solid var(--ink); }
.lf { padding: clamp(28px, 4vw, 56px); display: flex; flex-direction: column; gap: 18px; background: var(--card); }
@media (max-width: 900px) { .formblock { grid-template-columns: 1fr; } .formblock .copy { border-right: 0; border-bottom: 1px solid var(--ink); } }

/* ---------- steps ---------- */
.steps { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0; border: 1px solid var(--line-2); }
.step { padding: 28px; display: flex; flex-direction: column; gap: 12px; border-right: 1px solid var(--line-2); }
.step:last-child { border-right: 0; }
.step .num { color: var(--accent-ink); }
.step .when { font-family: var(--mono); font-size: 12.5px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); margin-top: auto; padding-top: 8px; }
@media (max-width: 900px) { .steps { grid-template-columns: 1fr; } .step { border-right: 0; border-bottom: 1px solid var(--line-2); } .step:last-child { border-bottom: 0; } }

/* ---------- stat list ---------- */
.stats { display: flex; flex-direction: column; }
.stat { display: grid; grid-template-columns: minmax(120px, 170px) minmax(0, 1fr); gap: 20px; align-items: baseline; padding: 18px 0; border-bottom: 1px solid var(--line); }
.stat:first-child { border-top: 1px solid var(--line); }
.stat .mono { font-size: 24px; letter-spacing: -0.01em; }

/* ---------- footer ---------- */
.foot { margin-top: clamp(64px, 9vw, 120px); border-top: 1px solid var(--ink); padding: 40px 0 56px; }
.foot-grid { display: grid; grid-template-columns: 1.1fr 1fr 1fr 1fr; gap: 32px 40px; }
@media (max-width: 1000px) { .foot-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 560px)  { .foot-grid { grid-template-columns: 1fr; } }
.foot-links { display: flex; flex-direction: column; gap: 8px; }
.foot-links a { color: var(--ink); text-decoration: none; font-size: 15px; }
.foot-links a:hover { color: var(--accent-ink); }

/* ---------- graph motif ---------- */
.graph line { stroke: var(--ink); stroke-width: 1; opacity: .28; }
.graph line.hot { stroke: var(--accent); stroke-width: 2; opacity: 1; }
.graph circle { fill: #fff; stroke: var(--ink); stroke-width: 1; }
.graph circle.hot { fill: var(--accent); stroke: var(--accent); }
.graph text { font-family: var(--mono); font-size: 11px; letter-spacing: .08em; fill: var(--muted); text-transform: uppercase; }
.graph text.hot { fill: var(--accent-ink); }
@media (prefers-reduced-motion: no-preference) {
  .graph circle.hot { animation: pulse 3.2s ease-in-out infinite; transform-box: fill-box; transform-origin: center; }
  .graph circle.hot:nth-of-type(2n) { animation-delay: .8s; }
  @keyframes pulse { 0%, 100% { transform: scale(1); } 50% { transform: scale(1.18); } }
}

/* ---------- case: mono slab (the brief as sent, formulas) ---------- */
.slab { background: var(--ink); color: #F1F0EC; font-family: var(--mono); font-size: 14px; line-height: 1.7; padding: clamp(20px, 3vw, 32px); margin: 0; overflow-x: auto; white-space: pre; }
.slab .c { color: #BDBDB6; }
.slab .k { color: #FF9A84; }
/* case: rule line inside a gate card */
.rule { font-family: var(--mono); font-size: 13.5px; line-height: 1.6; color: var(--ink); background: var(--bg); border: 1px solid var(--line-2); padding: 12px 14px; margin: 0; }
/* case: chip row */
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip { font-family: var(--mono); font-size: 12.5px; letter-spacing: 0.04em; padding: 6px 10px; border: 1px solid var(--ink); color: var(--ink); background: var(--bg); }
.chip.strong { background: var(--ink); color: #fff; }
.chip.derived { border-style: dashed; border-color: var(--line-2); color: var(--muted); }
/* case: gate card head row */
.gate-head { display: flex; justify-content: space-between; align-items: baseline; gap: 12px 24px; flex-wrap: wrap; }

@media print { .hdr, .menu { display: none; } .callout, .slab { -webkit-print-color-adjust: exact; print-color-adjust: exact; } }