/* ============================================================
   MFRCONSULTING L.L.C. — obsidian blueprint design system
   Palette: obsidian navy / cool white / copper
   All text uses solid colors — no transparency.
   ============================================================ */

:root {
  --bg: #080c11;
  --bg-2: #0b1118;
  --panel: #0f1620;
  --panel-2: #121b26;
  --ink: #eaeef4;
  --muted: #93a0b0;
  --faint: #5e6b79;
  --accent: #e8a34c;
  --accent-deep: #c98a35;
  --accent-ink: #17100a;
  --teal: #58c7b8;
  --line: #1d2733;
  --line-soft: #151d27;
  --sans: "Sora", "Segoe UI", Arial, sans-serif;
  --mono: "IBM Plex Mono", "Consolas", monospace;
  --rail: 264px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16.5px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

::selection { background: var(--accent); color: var(--accent-ink); }

a { color: var(--ink); text-decoration: none; }
a:hover { color: var(--accent); }

/* ================= LEFT RAIL ================= */
.rail {
  position: fixed;
  inset: 0 auto 0 0;
  width: var(--rail);
  background: var(--bg-2);
  border-right: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  z-index: 200;
  padding: 34px 30px;
}
.rail-brand { display: block; margin-bottom: 52px; }
.rail-brand .mark {
  font-family: var(--sans);
  font-weight: 800;
  font-size: 34px;
  letter-spacing: -.02em;
  color: var(--ink);
  line-height: 1;
}
.rail-brand .mark i { color: var(--accent); font-style: normal; }
.rail-brand .sub {
  display: block;
  margin-top: 10px;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--faint);
}
.rail-nav { display: flex; flex-direction: column; }
.rail-nav a {
  display: flex;
  align-items: baseline;
  gap: 14px;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--muted);
  padding: 13px 0;
  border-bottom: 1px solid var(--line-soft);
}
.rail-nav a .n {
  font-size: 10px;
  color: var(--faint);
  width: 22px;
}
.rail-nav a:hover { color: var(--ink); }
.rail-nav a:hover .n { color: var(--accent); }
.rail-nav a.on { color: var(--accent); }
.rail-nav a.on .n { color: var(--accent); }
.rail-foot {
  margin-top: auto;
  font-family: var(--mono);
  font-size: 11px;
  line-height: 1.8;
  color: var(--faint);
}
.rail-foot a { color: var(--muted); display: block; }
.rail-foot a:hover { color: var(--accent); }
.rail-foot .loc { color: var(--accent); letter-spacing: .14em; margin-bottom: 8px; display: block; }

/* mobile topbar + toggle */
.topstrip {
  display: none;
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 300;
  background: var(--bg-2);
  border-bottom: 1px solid var(--line);
  padding: 14px 20px;
  align-items: center;
  justify-content: space-between;
}
.topstrip .mark { font-weight: 800; font-size: 20px; }
.topstrip .mark i { color: var(--accent); font-style: normal; }
.nav-toggle {
  background: none;
  border: 1px solid var(--line);
  width: 42px; height: 42px;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
}
.nav-toggle span { width: 18px; height: 2px; background: var(--ink); display: block; }

/* ================= CONTENT ================= */
.content { margin-left: var(--rail); }

.stage { max-width: 1180px; padding: 0 56px; }

/* blueprint corner marks on sections */
.sect {
  position: relative;
  border-bottom: 1px solid var(--line);
  padding: 96px 0;
}
.sect::before, .sect::after {
  content: "+";
  position: absolute;
  font-family: var(--mono);
  font-size: 14px;
  color: var(--faint);
}
.sect::before { top: 18px; left: 20px; }
.sect::after { top: 18px; right: 20px; }

.tag {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 26px;
}
.tag::before { content: "["; color: var(--faint); }
.tag::after { content: "]"; color: var(--faint); }

h1, h2, h3 { font-family: var(--sans); font-weight: 700; letter-spacing: -.02em; }

.h-xl {
  font-size: clamp(40px, 5.4vw, 78px);
  line-height: 1.02;
  font-weight: 800;
}
.h-lg {
  font-size: clamp(30px, 3.6vw, 52px);
  line-height: 1.08;
  font-weight: 750;
}
.h-xl em, .h-lg em { font-style: normal; color: var(--accent); }

.lede {
  margin-top: 28px;
  max-width: 620px;
  font-size: 18px;
  color: var(--muted);
}

/* ghost numeral */
.ghost {
  font-family: var(--mono);
  font-weight: 400;
  color: var(--faint);
}

/* ================= HERO ================= */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(0deg, var(--line-soft) 1px, transparent 1px) 0 0 / 100% 96px,
    linear-gradient(90deg, var(--line-soft) 1px, transparent 1px) 0 0 / 96px 100%,
    var(--bg);
}
.hero-ghost {
  position: absolute;
  right: -30px;
  bottom: 60px;
  font-weight: 800;
  font-size: clamp(180px, 26vw, 380px);
  line-height: .8;
  letter-spacing: -.04em;
  color: transparent;
  -webkit-text-stroke: 1px var(--line);
  pointer-events: none;
  user-select: none;
}
.hero-top { padding: 90px 56px 0; position: relative; z-index: 2; }
.hero-bottom {
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  position: relative;
  z-index: 2;
  background: var(--bg);
}
.hero-cell {
  padding: 30px 56px 34px;
  border-right: 1px solid var(--line);
}
.hero-cell:last-child { border-right: 0; }
.hero-cell .k {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--faint);
  display: block;
  margin-bottom: 8px;
}
.hero-cell .v { font-size: 17px; font-weight: 600; }
.hero-cell .v i { color: var(--accent); font-style: normal; }

.hero-actions { margin-top: 44px; display: flex; gap: 18px; flex-wrap: wrap; }

/* ================= BUTTONS ================= */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: .14em;
  text-transform: uppercase;
  padding: 16px 28px;
  background: var(--accent);
  color: var(--accent-ink);
  font-weight: 600;
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 0 100%);
  transition: background .2s ease;
}
.btn:hover { background: var(--accent-deep); color: var(--accent-ink); }
.btn-line {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line);
  clip-path: none;
}
.btn-line:hover { border-color: var(--accent); color: var(--accent); background: transparent; }

/* ================= SPEC LIST (capability rows) ================= */
.spec { border-top: 1px solid var(--line); }
.spec-row {
  display: grid;
  grid-template-columns: 70px 1fr auto;
  gap: 28px;
  align-items: baseline;
  padding: 26px 0;
  border-bottom: 1px solid var(--line);
  transition: background .2s ease, padding-left .2s ease;
}
.spec-row:hover { background: var(--panel); padding-left: 14px; }
.spec-row .num {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--faint);
}
.spec-row:hover .num { color: var(--accent); }
.spec-row h3 { font-size: 20px; font-weight: 650; }
.spec-row .count {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--faint);
  letter-spacing: .1em;
}
.spec-row p {
  grid-column: 2;
  color: var(--muted);
  font-size: 14.5px;
  margin-top: -14px;
  max-width: 640px;
}

/* ================= GRID CARDS ================= */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.gcard {
  background: var(--panel);
  border: 1px solid var(--line);
  padding: 34px 30px 38px;
  clip-path: polygon(0 0, calc(100% - 22px) 0, 100% 22px, 100% 100%, 0 100%);
  position: relative;
  display: flex;
  flex-direction: column;
}
.gcard:hover { border-color: var(--accent); }
.gcard .idx {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--accent);
  letter-spacing: .16em;
  margin-bottom: 20px;
}
.gcard h3 { font-size: 21px; font-weight: 650; margin-bottom: 12px; line-height: 1.3; }
.gcard p { color: var(--muted); font-size: 14.5px; flex: 1; }
.gcard .foot {
  margin-top: 24px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--faint);
  letter-spacing: .12em;
  text-transform: uppercase;
}

/* ================= DATA STRIP ================= */
.datastrip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--line);
  background: var(--bg-2);
}
.dcell {
  padding: 40px 34px;
  border-right: 1px solid var(--line);
}
.dcell:last-child { border-right: 0; }
.dcell b {
  display: block;
  font-size: 46px;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -.02em;
}
.dcell b i { color: var(--accent); font-style: normal; }
.dcell span {
  display: block;
  margin-top: 12px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--muted);
}

/* ================= SPLIT ================= */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: start; }
.prose p { color: var(--muted); margin-bottom: 20px; font-size: 16px; }
.prose p strong { color: var(--ink); font-weight: 600; }
.callout {
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  background: var(--panel);
  padding: 32px 34px;
  font-size: 21px;
  font-weight: 300;
  line-height: 1.5;
}
.callout b { color: var(--accent); font-weight: 600; }

/* ================= TABLE (fact sheet) ================= */
.sheet { border: 1px solid var(--line); }
.sheet-row {
  display: grid;
  grid-template-columns: 210px 1fr;
  border-bottom: 1px solid var(--line);
}
.sheet-row:last-child { border-bottom: 0; }
.sheet-row .k {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--faint);
  padding: 18px 24px;
  border-right: 1px solid var(--line);
  background: var(--bg-2);
}
.sheet-row .v { padding: 18px 24px; font-size: 15px; }
.sheet-row .v a { color: var(--accent); }
.sheet-row .v a:hover { color: var(--ink); }

/* ================= TIMELINE ================= */
.tline { border-left: 1px solid var(--line); margin-left: 12px; }
.tstep {
  position: relative;
  padding: 0 0 52px 52px;
}
.tstep:last-child { padding-bottom: 8px; }
.tstep::before {
  content: "";
  position: absolute;
  left: -7px; top: 6px;
  width: 13px; height: 13px;
  background: var(--bg);
  border: 2px solid var(--accent);
  transform: rotate(45deg);
}
.tstep .ph {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 10px;
  display: block;
}
.tstep h3 { font-size: 24px; font-weight: 700; margin-bottom: 12px; }
.tstep p { color: var(--muted); max-width: 640px; font-size: 15px; }
.tstep ul { margin: 12px 0 0 18px; color: var(--muted); font-size: 14.5px; }
.tstep li { margin-bottom: 6px; }
.tstep li::marker { color: var(--accent); }

/* ================= CATALOG (capabilities page) ================= */
.cat { border-top: 1px solid var(--line); margin-top: 12px; }
.cat-group { border-bottom: 1px solid var(--line); }
.cat-head {
  width: 100%;
  background: none;
  border: 0;
  color: var(--ink);
  font-family: var(--sans);
  cursor: pointer;
  display: grid;
  grid-template-columns: 70px 1fr auto 30px;
  align-items: center;
  gap: 26px;
  text-align: left;
  padding: 30px 0;
}
.cat-head .num { font-family: var(--mono); font-size: 12px; color: var(--faint); }
.cat-head h3 { font-size: 24px; font-weight: 700; }
.cat-head .meta { font-family: var(--mono); font-size: 11px; color: var(--faint); letter-spacing: .1em; text-transform: uppercase; }
.cat-head .pm { font-family: var(--mono); font-size: 18px; color: var(--accent); }
.cat-body { display: none; padding: 0 0 38px 96px; }
.cat-group.open .cat-body { display: block; }
.cat-group.open .pm { transform: rotate(45deg); display: inline-block; }
.cat-body .desc { color: var(--muted); max-width: 700px; margin-bottom: 26px; font-size: 15px; }
.chips { display: flex; flex-wrap: wrap; gap: 10px; }
.chip {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink);
  border: 1px solid var(--line);
  background: var(--panel);
  padding: 9px 16px;
  clip-path: polygon(0 0, calc(100% - 8px) 0, 100% 8px, 100% 100%, 0 100%);
}
.chip:hover { border-color: var(--accent); color: var(--accent); }

/* ================= FORM ================= */
.field { margin-bottom: 20px; }
.field label {
  display: block;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 9px;
}
.field input, .field select, .field textarea {
  width: 100%;
  background: var(--bg-2);
  border: 1px solid var(--line);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 15px;
  padding: 14px 16px;
  outline: none;
}
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--accent); }
.field textarea { min-height: 140px; resize: vertical; }
.frow { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.form-note { font-family: var(--mono); font-size: 11.5px; color: var(--faint); margin-top: 16px; line-height: 1.7; }

/* ================= LEGAL ================= */
.legal { max-width: 840px; }
.legal h2 {
  font-size: 24px;
  font-weight: 700;
  margin: 52px 0 16px;
  padding-top: 36px;
  border-top: 1px solid var(--line);
}
.legal h2:first-of-type { border-top: 0; padding-top: 0; margin-top: 0; }
.legal h3 { font-size: 16px; margin: 26px 0 10px; color: var(--ink); }
.legal p { color: var(--muted); margin-bottom: 15px; font-size: 15px; }
.legal ul { margin: 0 0 15px 22px; color: var(--muted); font-size: 15px; }
.legal li { margin-bottom: 7px; }
.legal li::marker { color: var(--accent); }
.legal strong { color: var(--ink); font-weight: 600; }
.legal a { color: var(--accent); }
.legal a:hover { color: var(--ink); }
.stamp {
  display: inline-block;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--accent);
  border: 1px solid var(--line);
  padding: 8px 14px;
  margin-bottom: 44px;
}

/* ================= PAGE HEAD ================= */
.pagehead { padding: 120px 0 70px; border-bottom: 1px solid var(--line); }
.crumbs {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--faint);
  margin-bottom: 30px;
}
.crumbs a { color: var(--faint); }
.crumbs a:hover { color: var(--accent); }

/* ================= CTA ================= */
.cta { text-align: left; }
.cta h2 { font-size: clamp(34px, 4.6vw, 64px); font-weight: 800; line-height: 1.04; }
.cta h2 em { font-style: normal; color: var(--accent); }
.cta p { color: var(--muted); max-width: 560px; margin: 24px 0 40px; font-size: 16.5px; }

/* ================= FOOTER ================= */
.colophon {
  border-top: 1px solid var(--line);
  background: var(--bg-2);
  padding: 44px 56px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 28px;
  flex-wrap: wrap;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--faint);
}
.colophon a { color: var(--muted); margin-left: 20px; }
.colophon a:hover { color: var(--accent); }

/* ================= REVEAL ================= */
.rv { opacity: 0; transform: translateY(22px); transition: opacity .65s ease, transform .65s ease; }
.rv.in { opacity: 1; transform: none; }

/* ================= RESPONSIVE ================= */
@media (max-width: 1080px) {
  .rail { transform: translateX(-100%); transition: transform .3s ease; }
  .rail.open { transform: none; }
  .topstrip { display: flex; }
  .content { margin-left: 0; }
  .stage { padding: 0 28px; }
  .hero-top { padding: 110px 28px 0; }
  .hero-cell { padding: 24px 28px; }
  .hero-bottom { grid-template-columns: 1fr; }
  .hero-cell { border-right: 0; border-bottom: 1px solid var(--line); }
  .hero-cell:last-child { border-bottom: 0; }
  .hero-ghost { font-size: 200px; right: -20px; }
  .pagehead { padding-top: 150px; }
  .colophon { padding: 36px 28px; }
}
@media (max-width: 840px) {
  .sect { padding: 64px 0; }
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .datastrip { grid-template-columns: repeat(2, 1fr); }
  .dcell { border-bottom: 1px solid var(--line); }
  .split { grid-template-columns: 1fr; gap: 40px; }
  .spec-row { grid-template-columns: 46px 1fr; }
  .spec-row .count { display: none; }
  .spec-row p { margin-top: 6px; }
  .cat-head { grid-template-columns: 44px 1fr 30px; }
  .cat-head .meta { display: none; }
  .cat-body { padding-left: 0; }
  .frow { grid-template-columns: 1fr; }
  .sheet-row { grid-template-columns: 1fr; }
  .sheet-row .k { border-right: 0; border-bottom: 1px solid var(--line-soft); }
}