/* Landing page — Modern Dark Tech.
   Heavy-weight, tight-kerned headlines. Inter for display + UI,
   JetBrains Mono only for technical/code-style accents.

   Palette is local to .landing — cream off-white text, dual-accent
   highlights (blue + amber). Variables override the global ones for
   any element under body.landing only, so the terminal page is
   unaffected. */

body.landing {
  /* local palette overrides */
  --lp-text: #e6deca;          /* cream off-white — main copy */
  --lp-text-soft: rgba(230, 222, 202, 0.78);
  --lp-text-mute: rgba(230, 222, 202, 0.55);
  --lp-blue: #4d95e8;
  --lp-amber: #f1a847;
  --lp-green: #6cc26e;          /* flow-impact term */
  --lp-rose: #e85a5a;            /* jump term — red */
  --lp-rule: rgba(230, 222, 202, 0.14);
  --lp-rule-strong: rgba(230, 222, 202, 0.28);

  display: block;
  height: auto;
  min-height: 100vh;
  overflow-y: auto;
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-size: 15px;
  line-height: 1.6;
  color: var(--lp-text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body.landing ::selection { background: var(--lp-amber); color: #0b0e14; }

/* ---- topbar ---- */
.lp-topbar {
  position: fixed; top: 0; left: 0; right: 0;
  display: flex; align-items: center; justify-content: space-between;
  padding: 22px 48px;
  background: rgba(26, 24, 24, 0.7);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  z-index: 100;
  border-bottom: 1px solid var(--lp-rule);
}
.lp-topbar .brand {
  font-family: "Inter", sans-serif;
  font-weight: 900;
  font-size: 14px;
  letter-spacing: 0.2em;
  color: var(--lp-text);
}
.lp-nav { display: inline-flex; gap: 36px; }
.lp-nav a {
  color: var(--lp-text);
  text-decoration: none;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  opacity: 0.75;
  transition: opacity 0.2s ease, color 0.2s ease;
}
.lp-nav a:hover { opacity: 1; color: var(--lp-amber); }

/* ============================================================ */
/*    HERO                                                       */
/* ============================================================ */
.lp-cover {
  min-height: 100vh;
  display: flex; flex-direction: column;
  justify-content: center; align-items: center;
  padding: 120px 32px 80px;
  position: relative;
  background: var(--bg);
}
.lp-cover-inner {
  position: relative; z-index: 1;
  text-align: center;
  max-width: 1100px;
}
.lp-headline {
  margin: 0 0 36px;
  font-family: "Inter", sans-serif;
  font-weight: 900;
  font-size: clamp(48px, 9vw, 132px);
  line-height: 0.92;
  letter-spacing: -0.045em;
  color: var(--lp-text);
}
.lp-sub {
  margin: 0 auto 56px;
  font-size: clamp(15px, 1.5vw, 19px);
  font-weight: 400;
  line-height: 1.55;
  color: var(--lp-text-soft);
  max-width: 680px;
}
.lp-cta {
  display: inline-flex;
  gap: 14px;
  flex-wrap: wrap;
  justify-content: center;
}
.lp-btn {
  display: inline-flex; align-items: center; justify-content: center;
  font-family: "Inter", sans-serif;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
  padding: 16px 32px;
  text-decoration: none;
  border-radius: 2px;
  cursor: pointer;
  transition: all 0.18s ease;
  border: 1px solid transparent;
  white-space: nowrap;
}
.lp-btn-primary {
  background: var(--lp-text);
  color: #0b0e14;
}
.lp-btn-primary:hover {
  background: var(--lp-amber);
  transform: translateY(-1px);
}
.lp-btn-ghost {
  background: transparent;
  color: var(--lp-text);
  border-color: var(--lp-rule-strong);
}
.lp-btn-ghost:hover {
  border-color: var(--lp-amber);
  color: var(--lp-amber);
  background: rgba(241, 168, 71, 0.04);
}
.lp-btn-large { padding: 20px 44px; font-size: 14px; }

.lp-cover-foot {
  position: absolute;
  bottom: 36px; left: 50%;
  transform: translateX(-50%);
  font-size: 10px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--lp-text-mute);
  display: flex; flex-direction: column; align-items: center; gap: 6px;
}
.lp-arrow { animation: bob 2s ease-in-out infinite; font-size: 14px; }
@keyframes bob {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(4px); }
}

/* ============================================================ */
/*    SECTIONS — shared                                          */
/* ============================================================ */
.lp-section {
  max-width: 1280px;
  margin: 0 auto;
  padding: 140px 48px;
  position: relative;
}
.lp-section + .lp-section { border-top: 1px solid var(--lp-rule); }

.lp-section-head { margin-bottom: 72px; max-width: 800px; }
.lp-eyebrow {
  display: inline-block;
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 14px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--lp-amber);
  margin-bottom: 20px;
}
.lp-h2 {
  margin: 0 0 24px;
  font-family: "Inter", sans-serif;
  font-weight: 800;
  font-size: clamp(34px, 5vw, 60px);
  line-height: 1.0;
  letter-spacing: -0.035em;
  color: var(--lp-text);
}
.lp-section-lede {
  margin: 0;
  font-size: 16px;
  line-height: 1.6;
  color: var(--lp-text-soft);
  max-width: 640px;
}

/* ============================================================ */
/*    AGENTS — fixed 3 columns × 2 rows                          */
/* ============================================================ */
.lp-agents-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--lp-rule);
  border: 1px solid var(--lp-rule);
}
.lp-acard {
  padding: 36px 32px 40px;
  background: var(--bg);
  position: relative;
  transition: background 0.2s ease;
}
.lp-acard:hover { background: rgba(241, 168, 71, 0.03); }
.lp-acard-num {
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 14px;
  letter-spacing: 0.2em;
  color: var(--lp-amber);
  margin-bottom: 28px;
}
.lp-acard h3 {
  margin: 0 0 14px;
  font-family: "Inter", sans-serif;
  font-weight: 700;
  font-size: 20px;
  letter-spacing: -0.015em;
  color: var(--lp-text);
}
.lp-acard p {
  margin: 0;
  font-size: 14px;
  line-height: 1.65;
  color: var(--lp-text-soft);
}

/* ============================================================ */
/*    PRICING ENGINE                                             */
/* ============================================================ */
.lp-section-engine { padding-bottom: 160px; }

.lp-eq-card {
  border: 1px solid var(--lp-rule-strong);
  background: linear-gradient(180deg, rgba(77, 149, 232, 0.05), rgba(0,0,0,0));
  padding: 48px 40px;
  margin-bottom: 56px;
  border-radius: 2px;
}
.lp-eq-master { text-align: center; }
.lp-eq-label {
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 13px;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--lp-amber);
  margin-bottom: 20px;
}
.lp-eq-display {
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: clamp(20px, 2.4vw, 30px);
  font-weight: 500;
  letter-spacing: -0.005em;
  color: var(--lp-text);
  line-height: 1.5;
  padding: 8px 0;
}
.lp-eq-cap {
  margin-top: 28px;
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: clamp(15px, 1.6vw, 20px);
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--lp-text-soft);
  display: flex; flex-wrap: wrap; justify-content: center; gap: 8px 22px;
}
.lp-frac {
  display: inline-flex;
  flex-direction: column;
  vertical-align: middle;
  text-align: center;
  margin: 0 4px;
  font-size: 0.85em;
}
.lp-num { border-bottom: 1px solid var(--lp-text-soft); padding: 0 6px 2px; }
.lp-den { padding: 2px 6px 0; }

/* shared math token colors */
.m-blue   { color: var(--lp-blue); }
.m-amber  { color: var(--lp-amber); }
.m-green  { color: var(--lp-green); }
.m-rose   { color: var(--lp-rose); }
.m-text   { color: var(--lp-text); }
.m-soft   { color: var(--lp-text-soft); }
.m-op     { color: var(--lp-text-mute); padding: 0 4px; }

/* three pillars — VERTICAL, one per row */
.lp-pillars {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--lp-rule);
  border: 1px solid var(--lp-rule);
  margin-bottom: 64px;
}
.lp-pcard {
  padding: 44px 48px 44px;
  background: var(--bg);
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 48px;
  align-items: start;
}
@media (max-width: 880px) {
  .lp-pcard {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 32px 24px;
  }
}
.lp-pcard-side header { margin-bottom: 16px; }
.lp-pcard-tag {
  display: inline-block;
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 14px;
  letter-spacing: 0.04em;
  color: var(--lp-blue);
  background: rgba(77, 149, 232, 0.10);
  padding: 5px 10px;
  border-radius: 2px;
  margin-bottom: 16px;
}
.lp-pcard h3 {
  margin: 0;
  font-family: "Inter", sans-serif;
  font-weight: 800;
  font-size: 26px;
  letter-spacing: -0.025em;
  color: var(--lp-text);
  line-height: 1.1;
}
.lp-pcard p {
  margin: 16px 0 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--lp-text-soft);
  max-width: 360px;
}

.lp-eq-stack {
  display: flex;
  flex-direction: column;
  gap: 14px;
  background: rgba(0, 0, 0, 0.25);
  border-left: 2px solid var(--lp-amber);
  padding: 22px 26px;
  border-radius: 0 4px 4px 0;
  overflow-x: auto;
}
.lp-eq-row {
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 16px;
  line-height: 1.5;
  color: var(--lp-text);
  white-space: nowrap;
}
.lp-eq-row-sub {
  font-size: 13.5px;
  color: var(--lp-text-soft);
  padding-left: 18px;
  border-left: 1px solid var(--lp-rule);
  margin-left: 2px;
}
.lp-eq-row-label {
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 13px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--lp-amber);
  margin-bottom: -6px;
}

/* legend */
.lp-legend {
  border: 1px solid var(--lp-rule);
  padding: 36px 40px 40px;
  border-radius: 2px;
  background: rgba(241, 168, 71, 0.02);
}
.lp-legend-head {
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 14px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--lp-amber);
  margin-bottom: 24px;
}
.lp-legend-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 18px 36px;
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 16px;
}
.lp-legend-grid > div {
  display: grid;
  grid-template-columns: 120px 1fr;
  align-items: baseline;
  gap: 14px;
}
.lp-legend-grid b {
  color: var(--lp-blue);
  font-weight: 500;
  font-size: 16px;
}
.lp-legend-grid span {
  color: var(--lp-text-soft);
  font-family: "Inter", sans-serif;
  font-size: 15px;
  line-height: 1.45;
}

/* ============================================================ */
/*    UNIVERSE                                                   */
/* ============================================================ */
.lp-section-universe { padding-bottom: 160px; }
.lp-universe-body {
  display: grid;
  gap: 24px;
  max-width: 760px;
}
.lp-universe-lede {
  margin: 0;
  font-size: 16px;
  line-height: 1.7;
  color: var(--lp-text-soft);
}
.lp-universe-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  margin-top: 36px;
  background: var(--lp-rule);
  border: 1px solid var(--lp-rule);
}
.lp-universe-stats > div {
  background: var(--bg);
  padding: 28px 24px;
  display: flex; flex-direction: column; gap: 8px;
}
.lp-universe-stats b {
  font-family: "Inter", sans-serif;
  font-weight: 800;
  font-size: 36px;
  letter-spacing: -0.03em;
  color: var(--lp-amber);
}
.lp-universe-stats span {
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 13px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--lp-text-mute);
}

/* ============================================================ */
/*    FINAL                                                      */
/* ============================================================ */
.lp-final {
  text-align: center;
  padding: 100px 32px 140px;
  border-top: 1px solid var(--lp-rule);
}

/* ============================================================ */
/*    FOOTER                                                     */
/* ============================================================ */
.lp-footer {
  padding: 28px 48px;
  border-top: 1px solid var(--lp-rule);
  text-align: center;
  color: var(--lp-text-mute);
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 13px;
  letter-spacing: 0.05em;
}

/* ============================================================ */
/*    RESPONSIVE                                                 */
/* ============================================================ */
@media (max-width: 720px) {
  .lp-topbar { padding: 16px 20px; }
  .lp-nav { gap: 18px; }
  .lp-nav a { font-size: 11px; }
  .lp-cover { padding: 120px 20px 80px; }
  .lp-section { padding: 80px 24px; }
  .lp-eq-card { padding: 28px 20px; }
  .lp-eq-display { font-size: 16px; }
  .lp-acard { padding: 28px 22px; }
  .lp-eq-stack { padding: 16px 18px; }
  .lp-eq-row { font-size: 13px; }
  .lp-legend { padding: 24px 22px; }
  .lp-universe-stats { grid-template-columns: repeat(2, 1fr); }
  .lp-final { padding: 60px 20px 80px; }
  .lp-agents-grid { grid-template-columns: 1fr; }
}
@media (min-width: 720px) and (max-width: 1080px) {
  .lp-agents-grid { grid-template-columns: repeat(2, 1fr); }
}