/* ============================================================
   Waterfall homepage — styles
   Palette: pastel teal pulled from the logo
   ============================================================ */

:root {
  /* Brand palette */
  --teal-900: #1a4d44;
  --teal-700: #2f8c7e;
  --teal-600: #4ea99a;
  --teal-500: #7cc0b3;
  --teal-400: #9ed3c8;
  --teal-300: #c2e1da;
  --teal-200: #dceee8;
  --teal-100: #ecf6f3;
  --teal-50:  #f5faf8;

  /* Neutrals */
  --ink-900: #0d1c1a;
  --ink-800: #1c302d;
  --ink-700: #2e4441;
  --ink-500: #5a6f6c;
  --ink-400: #7e928f;
  --ink-300: #a5b6b3;
  --ink-200: #d3dbd9;
  --ink-100: #e8edec;
  --paper:   #f7faf9;
  --paper-2: #fdfefd;
  --white:   #ffffff;

  /* Accent (warm) for cascade-failure & dumb zone */
  --warn-300: #f1c8bb;
  --warn-500: #e8b4a8;
  --warn-700: #c87a64;

  /* Type */
  --font-sans: "Inter", "Helvetica Neue", system-ui, sans-serif;
  --font-display: "Fraunces", "Times New Roman", serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;

  /* Layout */
  --max: 1240px;
  --gutter: clamp(20px, 4vw, 56px);
  --radius: 14px;
  --radius-sm: 8px;

  /* Effects */
  --shadow-sm: 0 1px 2px rgba(20, 60, 55, .06), 0 2px 6px rgba(20, 60, 55, .04);
  --shadow-md: 0 6px 24px rgba(20, 60, 55, .08), 0 1px 2px rgba(20, 60, 55, .04);
  --shadow-lg: 0 24px 60px rgba(20, 60, 55, .10), 0 2px 6px rgba(20, 60, 55, .04);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.55;
  color: var(--ink-800);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

::selection { background: var(--teal-300); color: var(--ink-900); }

/* ============================================================
   NAV
   ============================================================ */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 32px;
  padding: 14px var(--gutter);
  background: rgba(247, 250, 249, .82);
  backdrop-filter: saturate(140%) blur(12px);
  -webkit-backdrop-filter: saturate(140%) blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color .25s ease, background .25s ease;
}
.nav.is-scrolled {
  border-bottom-color: var(--ink-100);
  background: rgba(247, 250, 249, .95);
}
.nav__brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 20px;
  letter-spacing: -.01em;
  color: var(--ink-900);
}
.nav__mark { width: 36px; height: 36px; }
.nav__word { font-feature-settings: "ss01"; }

.nav__links {
  display: flex;
  gap: 28px;
  justify-content: center;
  font-size: 14px;
  color: var(--ink-500);
}
.nav__links a {
  position: relative;
  padding: 6px 0;
  transition: color .15s ease;
}
.nav__links a:hover { color: var(--ink-900); }
.nav__links a::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 1px;
  background: var(--teal-700);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .2s ease;
}
.nav__links a:hover::after { transform: scaleX(1); }

.nav__cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px 9px 12px;
  border-radius: 999px;
  background: var(--ink-900);
  color: var(--paper);
  font-size: 14px;
  font-weight: 500;
  transition: transform .12s ease, background .15s ease;
}
.nav__cta:hover { background: var(--teal-900); transform: translateY(-1px); }
.nav__cta-glyph {
  display: inline-grid;
  place-items: center;
  width: 20px; height: 20px;
  font-family: var(--font-mono);
  font-size: 12px;
  border-radius: 6px;
  background: var(--teal-500);
  color: var(--ink-900);
}

@media (max-width: 800px) {
  .nav__links { display: none; }
  .nav { grid-template-columns: auto 1fr auto; }
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  min-height: 92vh;
  padding: clamp(80px, 12vh, 140px) var(--gutter) 80px;
  background:
    radial-gradient(1200px 600px at 50% -100px, var(--teal-100), transparent 60%),
    linear-gradient(180deg, var(--paper-2), var(--paper));
  overflow: hidden;
}
.hero__bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  display: grid;
  place-items: center;
  opacity: .5;
}
.hero__v { width: min(1100px, 92vw); height: auto; }

.hero__inner {
  position: relative;
  max-width: var(--max);
  margin: 0 auto;
}
.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 12px;
  border: 1px solid var(--ink-100);
  background: var(--white);
  border-radius: 999px;
  font-size: 12px;
  letter-spacing: .04em;
  text-transform: uppercase;
  color: var(--ink-500);
  box-shadow: var(--shadow-sm);
}
.hero__eyebrow .dot {
  width: 6px; height: 6px;
  background: var(--teal-600);
  border-radius: 50%;
  box-shadow: 0 0 0 3px rgba(78, 169, 154, .2);
  animation: breathe 2.4s ease-in-out infinite;
}
.hero__eyebrow .dim { color: var(--ink-300); }

@keyframes breathe {
  0%, 100% { opacity: 1; }
  50% { opacity: .55; }
}

.hero__title {
  margin: 28px 0 0;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(40px, 6.4vw, 96px);
  line-height: 1.02;
  letter-spacing: -.025em;
  color: var(--ink-900);
}
.hero__title-l1 { color: var(--ink-900); }
.hero__title-l2 {
  background: linear-gradient(135deg, var(--teal-700) 0%, var(--teal-500) 60%, var(--teal-400) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-style: italic;
  font-weight: 300;
}
.hero__title-tag {
  display: block;
  margin-top: 18px;
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 300;
  font-size: clamp(28px, 3.2vw, 48px);
  line-height: 1;
  letter-spacing: -.015em;
  color: var(--teal-700);
}
.hero__title-sub {
  display: block;
  margin-top: 24px;
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: clamp(18px, 1.7vw, 24px);
  line-height: 1.35;
  letter-spacing: -.005em;
  color: var(--ink-700);
}

.hero__lede {
  max-width: 640px;
  margin: 28px 0 0;
  font-size: clamp(15px, 1.2vw, 17px);
  color: var(--ink-500);
  line-height: 1.6;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 36px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 22px;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 500;
  letter-spacing: -.005em;
  transition: transform .12s ease, background .15s ease, box-shadow .15s ease, color .15s ease;
  cursor: pointer;
  border: 1px solid transparent;
}
.btn--primary {
  background: var(--ink-900);
  color: var(--paper);
  box-shadow: var(--shadow-md);
}
.btn--primary:hover {
  background: var(--teal-900);
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
}
.btn--ghost {
  background: var(--white);
  color: var(--ink-800);
  border-color: var(--ink-100);
}
.btn--ghost:hover { border-color: var(--teal-500); color: var(--ink-900); }

.hero__cmd {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  margin-top: 28px;
  padding: 10px 12px 10px 16px;
  background: var(--white);
  border: 1px solid var(--ink-100);
  border-radius: 12px;
  box-shadow: var(--shadow-sm);
  font-family: var(--font-mono);
  font-size: 14px;
}
.hero__cmd-label {
  font-family: var(--font-sans);
  font-size: 11px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--ink-400);
  padding-right: 12px;
  border-right: 1px solid var(--ink-100);
}
.hero__cmd-line {
  color: var(--ink-900);
}
.hero__cmd-line .prompt { color: var(--teal-600); margin-right: 8px; }
.hero__cmd-copy {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  background: var(--teal-100);
  border: none;
  border-radius: 8px;
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 500;
  color: var(--teal-900);
  cursor: pointer;
  transition: background .15s ease;
}
.hero__cmd-copy:hover { background: var(--teal-200); }

.hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 36px;
  margin-top: 48px;
  padding-top: 28px;
  border-top: 1px dashed var(--ink-100);
  max-width: 640px;
}
.hero__meta-item { display: flex; flex-direction: column; }
.hero__meta-item strong {
  font-family: var(--font-display);
  font-size: 36px;
  font-weight: 400;
  line-height: 1;
  color: var(--teal-700);
  letter-spacing: -.02em;
}
.hero__meta-item span {
  font-size: 12px;
  letter-spacing: .04em;
  text-transform: uppercase;
  color: var(--ink-500);
  margin-top: 6px;
}

.hero__scroll {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--ink-400);
  animation: bob 2.4s ease-in-out infinite;
}
@keyframes bob {
  0%, 100% { transform: translate(-50%, 0); }
  50%      { transform: translate(-50%, 6px); }
}

@media (max-width: 600px) {
  .hero { min-height: auto; padding: 88px var(--gutter) 56px; }
  .hero__title {
    overflow-wrap: break-word;
    word-break: normal;
    hyphens: auto;
  }
  .hero__title-l1,
  .hero__title-l2 { font-size: clamp(34px, 9.2vw, 44px) !important; }
  .hero__title-tag { font-size: clamp(20px, 5.6vw, 28px) !important; }
  .hero__title-sub { font-size: 15px !important; margin-top: 16px; }
  .hero__lede { font-size: 14px; margin-top: 20px; }
  .hero__cmd {
    flex-wrap: wrap;
    gap: 8px;
    font-size: 12px;
    align-items: flex-start;
  }
  .hero__cmd-label {
    border-right: none;
    padding-right: 0;
    flex-basis: 100%;
  }
  .hero__cmd-line {
    flex-basis: 100%;
    word-break: break-all;
    overflow-wrap: anywhere;
    line-height: 1.5;
  }
  .hero__cmd-copy { margin-top: 4px; }
  .hero__meta { gap: 24px; margin-top: 32px; padding-top: 20px; }
  .hero__meta-item strong { font-size: 28px; }
}

/* ============================================================
   SECTIONS — common
   ============================================================ */
.section {
  position: relative;
  padding: clamp(80px, 12vh, 140px) var(--gutter);
  max-width: var(--max);
  margin: 0 auto;
}
.section__head { max-width: 760px; margin-bottom: 56px; }
.section__num {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--teal-700);
  margin-bottom: 18px;
}
.section__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(34px, 4.4vw, 56px);
  line-height: 1.05;
  letter-spacing: -.02em;
  color: var(--ink-900);
}
.section__title em {
  font-style: italic;
  font-weight: 300;
  color: var(--teal-700);
}
.section__lede {
  margin: 22px 0 0;
  font-size: clamp(15px, 1.15vw, 17px);
  color: var(--ink-500);
  line-height: 1.6;
  max-width: 640px;
}

.tag {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .04em;
  text-transform: uppercase;
}
.tag--warn { background: #fbe6df; color: var(--warn-700); }
.tag--mute { background: var(--teal-100); color: var(--teal-900); }

/* ============================================================
   PROBLEM
   ============================================================ */
.section--problem { background: var(--paper); }

.problem__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}
@media (max-width: 880px) { .problem__grid { grid-template-columns: 1fr; } }

.problem__card {
  background: var(--white);
  border: 1px solid var(--ink-100);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow-sm);
}
.problem__card header { display: flex; flex-direction: column; gap: 10px; margin-bottom: 22px; }
.problem__card h3 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 26px;
  letter-spacing: -.01em;
  color: var(--ink-900);
}
.problem__caption {
  margin: 22px 0 0;
  font-size: 14px;
  color: var(--ink-500);
  line-height: 1.55;
}

/* ============================================================
   Cascade — scroll-pinned gauge chart
   ============================================================ */
.cascade-scroll {
  position: relative;
  height: 280vh;
  margin-bottom: 56px;
}
.cascade-scroll__pin {
  position: sticky;
  top: 88px;
  margin: 0;
}

.cascade__intro {
  margin: 0 0 22px;
  font-size: 15px;
  line-height: 1.55;
  color: var(--ink-700);
}
.cascade__hint {
  display: inline-block;
  margin-left: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--teal-700);
}

/* Cascade gauge chart */
.cascade { display: grid; gap: 12px; margin-bottom: 16px; }
.cascade__row {
  display: grid;
  grid-template-columns: 64px 1fr 150px;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  opacity: .2;
  filter: saturate(.3);
  transform: translateY(6px);
  transition: opacity .35s ease, filter .35s ease, transform .35s ease;
}
.cascade__row.is-active {
  opacity: 1;
  filter: none;
  transform: none;
}
.cascade__step { color: var(--ink-500); text-transform: uppercase; letter-spacing: .04em; }
.cascade__bar {
  position: relative;
  height: 10px;
  background: var(--teal-100);
  border-radius: 999px;
  overflow: hidden;
}
.cascade__bar i {
  display: block;
  position: absolute; inset: 0 auto 0 0;
  width: 0;
  max-width: var(--w);
  background: linear-gradient(90deg, var(--teal-500), var(--teal-700));
  border-radius: inherit;
  transition: width .25s ease;
}
.cascade__row.is-active .cascade__bar i { width: var(--w); }
.cascade__bar--bad { background: #fbe6df; }
.cascade__bar--bad i {
  background: linear-gradient(90deg, var(--warn-500), var(--warn-700));
}
.cascade__ok   { color: var(--teal-700); }
.cascade__warn { color: #b88a4a; }
.cascade__bad  { color: var(--warn-700); }

/* Progress bar at bottom of card */
.cascade2__progress {
  position: relative;
  height: 3px;
  background: var(--ink-100);
  border-radius: 999px;
  overflow: hidden;
  margin-top: 12px;
  margin-bottom: 16px;
}
.cascade2__progress-fill {
  position: absolute;
  inset: 0 auto 0 0;
  width: var(--progress, 0%);
  background: linear-gradient(90deg, var(--teal-500), var(--warn-500));
  transition: width .1s linear;
}

/* Mobile / reduced-motion: drop the pin */
@media (max-width: 720px) {
  .cascade-scroll { height: auto; margin-bottom: 24px; }
  .cascade-scroll__pin { position: static; }
  .cascade__row { opacity: 1; filter: none; transform: none; }
  .cascade__bar i { width: var(--w) !important; }
}
@media (prefers-reduced-motion: reduce) {
  .cascade-scroll { height: auto; margin-bottom: 24px; }
  .cascade-scroll__pin { position: static; }
  .cascade__row { opacity: 1; filter: none; transform: none; }
  .cascade__bar i { width: var(--w) !important; }
}

/* Dumb zone */
.zone { display: grid; gap: 10px; }
.zone__axis {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--ink-400);
}
.zone__track {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr 1.4fr;
  height: 64px;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--ink-100);
}
.zone__band {
  position: relative;
}
.zone__band--good { background: linear-gradient(90deg, var(--teal-300), var(--teal-200)); }
.zone__band--mid  { background: linear-gradient(90deg, var(--teal-200), #f0d8cc); }
.zone__band--bad  {
  background: linear-gradient(90deg, #f0d8cc, var(--warn-500));
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: .12em;
  color: var(--ink-900);
}
.zone__band--bad::before { content: attr(data-label); }
.zone__legend {
  display: flex;
  gap: 16px;
  font-size: 12px;
  color: var(--ink-500);
}
.zone__legend i {
  display: inline-block;
  width: 10px; height: 10px;
  border-radius: 3px;
  margin-right: 6px;
  vertical-align: middle;
}

.problem__pull {
  position: relative;
  margin-top: 56px;
  padding: 36px 36px 36px 64px;
  background: linear-gradient(180deg, var(--teal-100), var(--teal-50));
  border-radius: var(--radius);
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(20px, 2.2vw, 28px);
  line-height: 1.35;
  letter-spacing: -.01em;
  color: var(--ink-900);
}
.problem__pull em { font-style: italic; color: var(--teal-700); }
.problem__pull .quote-mark {
  position: absolute;
  top: 6px; left: 22px;
  font-family: var(--font-display);
  font-size: 92px;
  line-height: 1;
  color: var(--teal-400);
}

/* ============================================================
   CYCLE V
   ============================================================ */
.section--cycle { background: var(--paper); }

.vcycle {
  position: relative;
  margin-top: 24px;
  padding: 64px 16px 48px;
}
.vcycle__sides {
  position: absolute;
  inset: 80px 0 64px 0;
  pointer-events: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ink-300);
}
.vcycle__side--left  { writing-mode: vertical-rl; transform: rotate(180deg); margin-left: 4px; }
.vcycle__side--right { writing-mode: vertical-rl;                              margin-right: 4px; }

.vcycle__body {
  position: relative;
  width: 790px;
  height: 464px;
  margin-inline: auto;
}
.vcycle__lines {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
}

/* Bootstrap (01) — dans la liste, même taille que les autres */
.vphase--preamble {
  background: var(--teal-50);
  border: 1px dashed var(--teal-300);
}
.vphase--preamble:hover,
.vphase--preamble:focus-visible {
  border-color: var(--teal-300);
  border-style: dashed;
}

.vcycle__list {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
}

.vphase {
  position: absolute;
  width: 130px;
  height: 64px;
  cursor: help;
  background: var(--white);
  border: 1px solid var(--ink-100);
  border-radius: 12px;
  padding: 10px 12px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  gap: 4px;
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.vphase:hover,
.vphase:focus-visible {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--teal-500);
  z-index: 5;
  outline: none;
}

.vphase__id {
  min-width: 0;
  width: 100%;
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 500;
  color: var(--ink-900);
  letter-spacing: -.005em;
  white-space: normal;
  line-height: 1.3;
}
.vphase__owner {
  display: inline-block;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--ink-500);
  background: var(--teal-50);
  border: 1px solid var(--teal-200);
  padding: 2px 6px;
  border-radius: 4px;
  box-sizing: border-box;
}

/* Apex pair (06 Planning + 07 Implementation) */
.vphase--apex {
  background: linear-gradient(180deg, var(--teal-700), var(--teal-900));
  border-color: transparent;
}
.vphase--apex .vphase__id { color: var(--white); }
.vphase--apex .vphase__owner {
  background: rgba(255,255,255,.14);
  border-color: rgba(255,255,255,.18);
  color: rgba(255,255,255,.85);
}

/* Tooltip on hover */
.vphase[data-tip]::after {
  content: attr(data-tip);
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(4px);
  width: max-content;
  max-width: 240px;
  padding: 10px 12px;
  background: var(--ink-900);
  color: var(--paper);
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 400;
  line-height: 1.45;
  letter-spacing: 0;
  text-transform: none;
  border-radius: 8px;
  box-shadow: 0 12px 28px rgba(28, 48, 45, .25);
  opacity: 0;
  pointer-events: none;
  transition: opacity .15s ease, transform .15s ease;
  z-index: 10;
  white-space: normal;
}
.vphase[data-tip]::before {
  content: "";
  position: absolute;
  bottom: calc(100% + 2px);
  left: 50%;
  transform: translateX(-50%);
  border: 6px solid transparent;
  border-top-color: var(--ink-900);
  opacity: 0;
  pointer-events: none;
  transition: opacity .15s ease;
  z-index: 10;
}
.vphase:hover::after,
.vphase:focus-visible::after {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}
.vphase:hover::before,
.vphase:focus-visible::before {
  opacity: 1;
}
/* Row 1 phases (02 Requirements et 10 Closure) : tooltip sous le bloc */
.vphase--left:first-child[data-tip]::after,
.vphase--right:last-child[data-tip]::after {
  bottom: auto;
  top: calc(100% + 8px);
  transform: translateX(-50%) translateY(-4px);
}
.vphase--left:first-child[data-tip]::before,
.vphase--right:last-child[data-tip]::before {
  bottom: auto;
  top: calc(100% + 2px);
  border: 6px solid transparent;
  border-bottom-color: var(--ink-900);
  border-top-color: transparent;
}
.vphase--left:first-child:hover::after,
.vphase--left:first-child:focus-visible::after,
.vphase--right:last-child:hover::after,
.vphase--right:last-child:focus-visible::after {
  transform: translateX(-50%) translateY(0);
}

@media (max-width: 760px) {
  .vcycle__body { width: 100%; height: auto; }
  .vcycle__list { width: 100%; height: auto; display: flex; flex-direction: column; gap: 10px; }
  .vphase { position: static !important; width: 100% !important; height: auto !important; }
  .vcycle__sides, .vcycle__lines { display: none; }
}

.cycle__legend {
  display: flex;
  flex-wrap: wrap;
  gap: 24px 32px;
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px dashed var(--ink-100);
  font-size: 13px;
  color: var(--ink-500);
}
.cycle__legend strong { color: var(--ink-900); margin-right: 6px; }
.leg-dot {
  display: inline-block;
  width: 8px; height: 8px;
  border-radius: 50%;
  margin-right: 8px;
  vertical-align: middle;
}

/* Artefact glossary */
.glossary {
  margin-top: 64px;
  padding-top: 40px;
  border-top: 1px solid var(--ink-100);
}
.glossary__head {
  margin-bottom: 28px;
}
.glossary__head .section__num {
  display: block;
  margin-bottom: 8px;
}
.glossary__head p {
  margin: 0;
  font-size: 14px;
  color: var(--ink-500);
  max-width: 56ch;
}
.glossary__tablewrap {
  background: var(--white);
  border: none;
  border-radius: 0;
  box-shadow: none;
  overflow: visible;
}
.glossary__table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  color: var(--ink-700);
  border: 1px solid var(--ink-300);
}
.glossary__table thead {
  background: var(--paper-2);
}
.glossary__table th {
  text-align: left;
  padding: 10px 14px;
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0;
  text-transform: none;
  color: var(--ink-900);
  border: 1px solid var(--ink-300);
}
.glossary__th-abbr  { width: 80px; }
.glossary__th-name  { width: 180px; }
.glossary__th-owner { width: 110px; }

.glossary__table tbody tr {
  transition: background 150ms ease;
}
.glossary__table tbody tr:hover {
  background: var(--paper-2);
}
.glossary__table td {
  padding: 10px 14px;
  vertical-align: middle;
  line-height: 1.5;
  text-align: left;
  border: 1px solid var(--ink-300);
  font-family: var(--font-sans);
}
.glossary__table td:nth-child(2) {
  font-weight: 500;
  color: var(--ink-900);
}
.glossary__table td:nth-child(3) {
  color: var(--ink-700);
}

.glossary__abbr {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  color: var(--ink-900);
  background: none;
  padding: 0;
  border-radius: 0;
  letter-spacing: 0;
  height: auto;
}
.glossary__owner-pill {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  color: var(--ink-900);
  background: none;
  border: none;
  padding: 0;
  border-radius: 0;
  letter-spacing: 0;
  height: auto;
  white-space: nowrap;
}

@media (max-width: 760px) {
  .glossary__tablewrap { overflow-x: auto; }
  .glossary__table { min-width: 600px; }
}

/* ============================================================
   AGENTS
   ============================================================ */
.section--agents {
  background: linear-gradient(180deg, var(--teal-50), var(--paper));
  max-width: none;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}
.section--agents .section__head,
.section--agents .agents__grid,
.section--agents .agents__lane { max-width: var(--max); margin-left: auto; margin-right: auto; }

.agents__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
@media (max-width: 1024px) { .agents__grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px)  { .agents__grid { grid-template-columns: 1fr; } }

.agent {
  position: relative;
  padding: 22px 22px 18px;
  background: var(--white);
  border: 1px solid var(--ink-100);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.agent:hover {
  transform: translateY(-3px);
  border-color: var(--teal-500);
  box-shadow: var(--shadow-md);
}
.agent__code {
  display: inline-grid;
  place-items: center;
  width: 36px; height: 36px;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 13px;
  background: var(--ink-900);
  color: var(--teal-300);
  border-radius: 8px;
  letter-spacing: .04em;
}
.agent[data-role="RV"] .agent__code,
.agent[data-role="QA"] .agent__code { background: var(--teal-700); color: var(--paper); }
.agent[data-role="OR"] .agent__code { background: var(--teal-900); color: var(--teal-300); }
.agent[data-role="HO"] .agent__code { background: var(--paper); color: var(--ink-900); border: 1.5px solid var(--ink-900); }
.agent--ho {
  background: linear-gradient(180deg, var(--teal-100), var(--teal-50));
  border-color: var(--teal-300);
}
.agent--ho h3 { color: var(--teal-900); }

.agent h3 {
  margin: 14px 0 6px;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 19px;
  letter-spacing: -.005em;
  color: var(--ink-900);
}
.agent p {
  margin: 0;
  font-size: 13px;
  line-height: 1.55;
  color: var(--ink-500);
}
.agent__io {
  list-style: none;
  margin: 16px 0 0;
  padding: 12px 0 0;
  border-top: 1px dashed var(--ink-100);
  display: grid;
  gap: 4px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-700);
}
.agent__io span {
  display: inline-block;
  width: 28px;
  color: var(--teal-700);
  text-transform: uppercase;
  letter-spacing: .04em;
}

.agents__lane {
  margin-top: 56px;
  padding: 32px;
  background: var(--white);
  border: 1px solid var(--ink-100);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}
.lane__header {
  display: flex;
  align-items: baseline;
  gap: 24px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}
.lane__header p {
  margin: 0;
  font-size: 13px;
  color: var(--ink-500);
  flex: 1;
}
.lane2 {
  position: relative;
  margin-top: 8px;
}

/* Main row — grid of 7 columns so HO checkpoints below can align to transitions */
.lane2__main {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 22px 18px;
  align-items: stretch;
}
.lane2__step {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 14px;
  background: var(--paper-2);
  border: 1px solid var(--ink-100);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-700);
  min-width: 0;
  white-space: nowrap;
}
/* Arrow BETWEEN pills */
.lane2__step:not(:last-child)::after {
  content: "→";
  position: absolute;
  right: -16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--teal-500);
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 16px;
  z-index: 1;
}
.lane2__code {
  flex: 0 0 auto;
  padding: 3px 7px;
  border-radius: 4px;
  background: var(--ink-900);
  color: var(--teal-300);
  font-weight: 600;
  letter-spacing: .04em;
  font-size: 11px;
}
.lane2__art {
  flex: 0 1 auto;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Checkpoint row — 3 cards under columns 5, 6, 7, each pointing UP to the transition */
.lane2__checks {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 18px;
  align-items: start;
  position: relative;
}
.lane2__check {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 10px 12px;
  background: var(--teal-50);
  border: 1px solid var(--teal-300);
  border-radius: 10px;
  font-family: var(--font-sans);
  font-size: 12px;
  color: var(--ink-900);
}
.lane2__check[data-anchor="after-design"]     { grid-column: 5; }
.lane2__check[data-anchor="after-review"]     { grid-column: 6; }
.lane2__check[data-anchor="after-validation"] { grid-column: 7; }

/* Upward arrow on each check, positioned at the LEFT edge of its column —
   which lines up with the transition arrow between pill (N-1) and pill N above. */
.lane2__check::before {
  content: "↑";
  position: absolute;
  bottom: calc(100% + 4px);
  left: -9px; /* sits over the gap (gap is 18px wide, half = 9px) */
  color: var(--teal-700);
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 18px;
  line-height: 1;
}
/* Faint vertical guide from the check up toward the transition */
.lane2__check::after {
  content: "";
  position: absolute;
  bottom: 100%;
  left: -9px;
  width: 1px;
  height: 18px;
  background: linear-gradient(to top, var(--teal-300), transparent);
  transform: translateX(3px);
}

.lane2__check-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 500;
  font-size: 12px;
  color: var(--ink-900);
}
.lane2__check-code {
  display: inline-flex;
  align-items: center;
  height: 18px;
  padding: 0 6px;
  background: var(--white);
  color: var(--ink-900);
  border: 1.5px solid var(--ink-900);
  border-radius: 3px;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .04em;
}
.lane2__check-meta {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .04em;
  color: var(--teal-700);
  text-transform: uppercase;
}

@media (max-width: 900px) {
  .lane2__main, .lane2__checks { grid-template-columns: 1fr; }
  .lane2__step:not(:last-child)::after { content: "↓"; right: 50%; top: auto; bottom: -18px; transform: translateX(50%); }
  .lane2__check[data-anchor] { grid-column: 1; }
  .lane2__check::before, .lane2__check::after { display: none; }
}

/* ============================================================
   INSTALL
   ============================================================ */
.section--install {
  background: var(--ink-900);
  max-width: none;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
  color: var(--paper);
}
.section--install .section__head,
.section--install .install,
.section--install .install__aside { max-width: var(--max); margin-left: auto; margin-right: auto; }

.section--install .section__num   { color: var(--teal-400); }
.section--install .section__title { color: var(--paper); }
.section--install .section__title code {
  font-family: var(--font-mono);
  font-style: italic;
  font-size: .65em;
  color: var(--teal-300);
  background: rgba(255,255,255,.08);
  padding: 4px 10px;
  border-radius: 8px;
  vertical-align: 4px;
}
.section--install .section__lede  { color: rgba(247,250,249,.65); }

.install {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 32px;
}
.install__step {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 24px;
  padding: 28px;
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--radius);
}
@media (max-width: 720px) { .install__step { grid-template-columns: 1fr; } }
.install__num {
  font-family: var(--font-display);
  font-size: 44px;
  font-weight: 300;
  color: var(--teal-400);
  line-height: 1;
}
.install__body h3 {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 22px;
  letter-spacing: -.01em;
  color: var(--paper);
}
.install__body p {
  margin: 0 0 18px;
  font-size: 14px;
  color: rgba(247,250,249,.6);
}
.install__body code {
  font-family: var(--font-mono);
  font-size: 12px;
  background: rgba(255,255,255,.08);
  color: var(--teal-300);
  padding: 1px 5px;
  border-radius: 4px;
}

.code {
  position: relative;
  background: #0a1614;
  border: 1px solid rgba(255,255,255,.06);
  border-radius: 10px;
  padding: 16px 18px;
}
.code__lang {
  position: absolute;
  top: 10px; right: 56px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: rgba(247,250,249,.35);
}
.code pre { margin: 0; }
.code code {
  background: none;
  padding: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--teal-200);
  white-space: pre-wrap;
}
.code .prompt { color: var(--teal-500); margin-right: 8px; user-select: none; }
.code .muted  { color: rgba(247,250,249,.4); }
.code__copy {
  position: absolute;
  top: 8px; right: 8px;
  background: rgba(255,255,255,.06);
  border: none;
  color: rgba(247,250,249,.7);
  font-family: var(--font-sans);
  font-size: 11px;
  padding: 6px 10px;
  border-radius: 6px;
  cursor: pointer;
  transition: background .15s ease, color .15s ease;
}
.code__copy:hover { background: var(--teal-700); color: var(--paper); }

.install__aside {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid rgba(255,255,255,.08);
}
@media (max-width: 800px) { .install__aside { grid-template-columns: 1fr; } }
.install__aside h4 {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--teal-400);
}
.install__aside ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
  font-size: 13px;
  color: rgba(247,250,249,.7);
}
.install__aside ul li code {
  font-family: var(--font-mono);
  font-size: 12px;
  background: rgba(255,255,255,.08);
  color: var(--teal-300);
  padding: 1px 5px;
  border-radius: 4px;
}
.install__aside a { color: var(--teal-300); border-bottom: 1px dashed rgba(124,192,179,.4); }
.install__aside a:hover { color: var(--paper); border-color: var(--paper); }

/* ============================================================
   TRADE-OFFS
   ============================================================ */
.section--tradeoffs { background: var(--paper); }

.tradeoff {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 32px;
  align-items: start;
}
@media (max-width: 960px) { .tradeoff { grid-template-columns: 1fr; } }

.tradeoff__chart {
  position: relative;
  background: var(--white);
  border: 1px solid var(--ink-100);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  height: 460px;
}
.tradeoff__axes {
  position: absolute;
  inset: 0;
  pointer-events: none;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--ink-400);
}
.tradeoff__y {
  position: absolute;
  left: 14px; top: 50%;
  transform: rotate(-90deg) translateX(50%);
  transform-origin: left top;
}
.tradeoff__x {
  position: absolute;
  bottom: 14px; left: 50%;
  transform: translateX(-50%);
}
.tradeoff__plot {
  position: relative;
  height: 100%;
  margin: 0 28px;
  background-image:
    linear-gradient(to right, var(--ink-100) 1px, transparent 1px),
    linear-gradient(to bottom, var(--ink-100) 1px, transparent 1px);
  background-size: 25% 25%;
  border-left: 1px solid var(--ink-100);
  border-bottom: 1px solid var(--ink-100);
}
.tradeoff__curve {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.zone-pill {
  position: absolute;
  transform: translate(-50%, -50%);
  padding: 10px 14px;
  background: var(--white);
  border: 1px solid var(--ink-100);
  border-radius: 12px;
  box-shadow: var(--shadow-sm);
  font-size: 12px;
  white-space: nowrap;
  z-index: 2;
}
.zone-pill strong {
  display: block;
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 500;
  color: var(--ink-900);
  letter-spacing: -.005em;
}
.zone-pill small {
  display: block;
  margin-top: 2px;
  font-size: 11px;
  color: var(--ink-500);
}
.zone-pill--free  { border-color: var(--ink-200); }
.zone-pill--free  strong { color: var(--ink-500); }
.zone-pill--light { border-color: var(--teal-300); }
.zone-pill--full  { border-color: var(--teal-600); background: var(--teal-50); }
.zone-pill--full  strong { color: var(--teal-900); }
.zone-pill--break { border-color: var(--warn-500); }
.zone-pill--break strong { color: var(--warn-700); }

.tradeoff__costs {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}
.tradeoff__costs li {
  padding: 22px;
  background: var(--white);
  border: 1px solid var(--ink-100);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}
.tradeoff__cost-num {
  font-family: var(--font-display);
  font-size: 36px;
  font-weight: 400;
  color: var(--teal-700);
  letter-spacing: -.02em;
  line-height: 1;
}
.tradeoff__costs h4 {
  margin: 6px 0 6px;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 14px;
  letter-spacing: -.005em;
  color: var(--ink-900);
}
.tradeoff__costs p {
  margin: 0;
  font-size: 13px;
  color: var(--ink-500);
}

/* ============================================================
   WHY
   ============================================================ */
.section--why { background: var(--paper); }

.why {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.why__card {
  position: relative;
  padding: 28px;
  background: var(--white);
  border: 1px solid var(--ink-100);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
}
.why__card--feature {
  grid-column: span 2;
  background: linear-gradient(180deg, var(--ink-900), #0a1f1c);
  border-color: transparent;
  color: var(--paper);
}
.why__card--stance {
  background: linear-gradient(180deg, var(--teal-100), var(--teal-50));
  border-color: var(--teal-300);
}

@media (max-width: 1000px) { .why { grid-template-columns: 1fr; } .why__card--feature { grid-column: auto; } }

.why__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--teal-700);
}
.why__card--feature .why__num { color: var(--teal-300); }
.why__card h3 {
  margin: 8px 0 10px;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 22px;
  letter-spacing: -.01em;
  color: var(--ink-900);
}
.why__card--feature h3 { color: var(--paper); }
.why__card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--ink-500);
}
.why__card--feature p { color: rgba(247,250,249,.7); }
.why__card--feature p em { color: var(--teal-300); font-style: italic; }
.why__card--stance p strong {
  display: block;
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 400;
  font-size: 22px;
  line-height: 1.25;
  color: var(--teal-900);
  margin-bottom: 10px;
}

.why__dark {
  margin-top: 22px;
  padding: 16px 18px;
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: 10px;
  display: grid;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: rgba(247,250,249,.55);
}
.why__dark-row {
  display: grid;
  grid-template-columns: 130px 1fr 50px;
  align-items: center;
  gap: 12px;
}
.why__dark-row .auto { color: var(--teal-400); text-align: right; }
.why__dark-row .ho   { color: var(--paper);    text-align: right; font-weight: 600; }
.why__dark-row--gate { color: var(--paper); }
.dot-line {
  height: 1px;
  border-top: 1px dashed rgba(255,255,255,.18);
}
.dot-line--solid { border-top: 1px solid var(--teal-400); }

/* ============================================================
   FOOTER
   ============================================================ */
.foot {
  background: var(--paper-2);
  border-top: 1px solid var(--ink-100);
  padding: 64px var(--gutter) 28px;
}
.foot__grid {
  max-width: var(--max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.6fr repeat(3, 1fr);
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--ink-100);
}
@media (max-width: 800px) { .foot__grid { grid-template-columns: 1fr 1fr; } }

.foot__brand { display: grid; grid-template-columns: auto auto; align-items: center; gap: 8px 12px; }
.foot__mark { width: 32px; height: 32px; }
.foot__brand > span {
  font-family: var(--font-display);
  font-size: 22px;
  letter-spacing: -.01em;
  color: var(--ink-900);
}
.foot__brand small {
  grid-column: 1 / -1;
  font-size: 12px;
  color: var(--ink-500);
  margin-top: 4px;
  max-width: 280px;
}

.foot__col { display: grid; gap: 8px; align-content: start; }
.foot__col h5 {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--ink-400);
  font-weight: 500;
}
.foot__col a {
  font-size: 13px;
  color: var(--ink-700);
  transition: color .15s ease;
}
.foot__col a:hover { color: var(--teal-700); }

.foot__base {
  max-width: var(--max);
  margin: 24px auto 0;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 12px;
  color: var(--ink-400);
}
.foot__base a { color: var(--teal-700); border-bottom: 1px dashed var(--teal-300); }

/* ============================================================
   COPY TOAST
   ============================================================ */
.copy-toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translate(-50%, 80px);
  padding: 10px 18px;
  background: var(--ink-900);
  color: var(--paper);
  border-radius: 999px;
  font-size: 13px;
  font-family: var(--font-mono);
  letter-spacing: .04em;
  text-transform: uppercase;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  pointer-events: none;
  transition: transform .25s ease, opacity .25s ease;
  z-index: 100;
}
.copy-toast.is-visible {
  opacity: 1;
  transform: translate(-50%, 0);
}

/* ============================================================
   SCROLL REVEAL
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .7s ease, transform .7s cubic-bezier(.2,.6,.2,1);
}
.reveal.is-in {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
  html { scroll-behavior: auto; }
}