/* ============================================================
   Buggy — site styles
   Zero dependencies. Dark theme. Motion is opt-out aware.
   ============================================================ */

/* ---------- tokens ---------- */
:root {
  --bg:        #0a0c10;
  --bg-alt:    #0d1016;
  --bg-raise:  #11151d;
  --line:      #1d2430;
  --line-soft: #161c26;

  --ink:       #e9eef6;
  --ink-mid:   #a6b2c4;
  --ink-dim:   #6f7d91;

  --mint:      #53e0a6;
  --cyan:      #4cc9f0;
  --violet:    #9d7bff;
  --amber:     #f5c25b;
  --rose:      #ff7a8a;

  --radius:    14px;
  --radius-lg: 20px;
  --maxw:      1180px;

  --ease:      cubic-bezier(.22, .61, .36, 1);
  --ease-out:  cubic-bezier(.16, 1, .3, 1);

  --shadow:    0 18px 50px -18px rgb(0 0 0 / .75);
  --font:      'Inter', ui-sans-serif, system-ui, -apple-system, 'Segoe UI', sans-serif;
  --mono:      'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, Consolas, monospace;
}

*, *::before, *::after { box-sizing: border-box; }

/* The `hidden` attribute is only a UA-stylesheet `display: none`, so any author
   `display` declaration silently beats it. Several components below set
   `display` on elements that are also toggled via `hidden`, so make the
   attribute authoritative. */
[hidden] { display: none !important; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 90px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img, svg, canvas { display: block; max-width: 100%; }

h1, h2, h3 {
  line-height: 1.14;
  letter-spacing: -.022em;
  margin: 0;
  font-weight: 700;
}

p { margin: 0; }

a { color: inherit; text-decoration: none; }

code {
  font-family: var(--mono);
  font-size: .875em;
  background: #ffffff0d;
  border: 1px solid var(--line-soft);
  border-radius: 6px;
  padding: .12em .4em;
  color: #cfe3f5;
}

::selection { background: color-mix(in srgb, var(--mint) 32%, transparent); color: #fff; }

:focus-visible {
  outline: 2px solid var(--mint);
  outline-offset: 3px;
  border-radius: 6px;
}

.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: clamp(18px, 5vw, 40px);
}

.sr-only {
  position: absolute !important;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden; clip: rect(0 0 0 0);
  white-space: nowrap; border: 0;
}

.skip-link {
  position: fixed;
  top: -60px; left: 16px;
  z-index: 200;
  background: var(--mint);
  color: #04120c;
  font-weight: 700;
  padding: 10px 16px;
  border-radius: 0 0 10px 10px;
  transition: top .2s var(--ease);
}
.skip-link:focus { top: 0; }

.grad {
  background: linear-gradient(100deg, var(--mint), var(--cyan) 46%, var(--violet));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.icon { width: 15px; height: 15px; fill: currentColor; flex: none; }

/* ---------- scroll progress ---------- */
.scroll-progress {
  position: fixed; inset: 0 0 auto 0;
  height: 2px; z-index: 120;
  background: transparent;
  pointer-events: none;
}
.scroll-progress span {
  display: block; height: 100%; width: 0;
  background: linear-gradient(90deg, var(--mint), var(--cyan), var(--violet));
  box-shadow: 0 0 12px color-mix(in srgb, var(--cyan) 60%, transparent);
}

/* ---------- nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 100;
  border-bottom: 1px solid transparent;
  transition: background .3s var(--ease), border-color .3s var(--ease), backdrop-filter .3s;
}
.nav.is-stuck {
  background: rgb(10 12 16 / .86);                               /* fallback */
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(14px) saturate(160%);
  border-bottom-color: var(--line);
}
.nav__inner {
  display: flex; align-items: center; gap: 28px;
  height: 66px;
}

.brand { display: inline-flex; align-items: center; gap: 10px; flex: none; }
.brand__mark { width: 28px; height: 28px; }
.brand__mark rect { fill: #ffffff0f; stroke: var(--line); }
.brand__mark path {
  fill: none; stroke: var(--mint);
  stroke-width: 3.2; stroke-linecap: round; stroke-linejoin: round;
}
.brand__name { font-weight: 800; font-size: 1.06rem; letter-spacing: -.02em; }

.nav__links {
  display: flex; gap: 4px;
  margin-left: auto;
  font-size: .9rem;
}
.nav__links a {
  position: relative;
  padding: 7px 12px;
  border-radius: 8px;
  color: var(--ink-mid);
  transition: color .2s var(--ease), background .2s var(--ease);
}
.nav__links a:hover { color: var(--ink); background: #ffffff0a; }
.nav__links a[aria-current] { color: var(--ink); }
.nav__links a[aria-current]::after {
  content: '';
  position: absolute;
  left: 12px; right: 12px; bottom: 2px;
  height: 2px; border-radius: 2px;
  background: linear-gradient(90deg, var(--mint), var(--cyan));
}

.nav__burger {
  display: none;
  margin-left: auto;
  width: 40px; height: 40px;
  background: #ffffff0a;
  border: 1px solid var(--line);
  border-radius: 10px;
  cursor: pointer;
  padding: 11px 10px;
}
.nav__burger span {
  display: block; height: 2px; border-radius: 2px;
  background: var(--ink);
  transition: transform .26s var(--ease), opacity .2s var(--ease);
}
.nav__burger span + span { margin-top: 4px; }
.nav__burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav__burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav__burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

.nav__mobile {
  display: grid; gap: 2px;
  padding: 10px clamp(18px, 5vw, 40px) 18px;
  background: color-mix(in srgb, var(--bg) 94%, transparent);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
  animation: slideDown .26s var(--ease-out);
}
.nav__mobile a {
  padding: 11px 12px;
  border-radius: 10px;
  color: var(--ink-mid);
  font-weight: 500;
}
.nav__mobile a:hover { background: #ffffff0a; color: var(--ink); }

@keyframes slideDown { from { opacity: 0; transform: translateY(-8px); } to { opacity: 1; transform: none; } }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font: inherit; font-weight: 600; font-size: .94rem;
  padding: 12px 20px;
  border-radius: 11px;
  border: 1px solid transparent;
  cursor: pointer;
  white-space: nowrap;
  transition: transform .18s var(--ease), box-shadow .22s var(--ease),
              background .22s var(--ease), border-color .22s var(--ease), color .2s;
}
.btn--sm { padding: 8px 14px; font-size: .86rem; }

.btn--primary {
  background: linear-gradient(135deg, var(--mint), #39c8e8);
  color: #04130d;
  box-shadow: 0 10px 28px -12px color-mix(in srgb, var(--mint) 70%, transparent);
}
.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 38px -12px color-mix(in srgb, var(--mint) 80%, transparent);
}

.btn--ghost {
  background: #ffffff0a;
  border-color: var(--line);
  color: var(--ink);
}
.btn--ghost:hover { background: #ffffff14; border-color: #2b3545; transform: translateY(-2px); }

.btn:active { transform: translateY(0); }
.nav__cta { flex: none; }

/* ---------- hero ---------- */
.hero { position: relative; overflow: hidden; padding: clamp(50px, 8vw, 96px) 0 clamp(60px, 9vw, 110px); }

.hero__canvas {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  opacity: .5;
  pointer-events: none;
}

.hero__glow {
  position: absolute;
  top: -28%; left: 50%;
  /* Wider than the viewport on purpose: `filter: blur()` leaves a faint seam at
     the element's own edges, so they are pushed outside the visible area. */
  width: 170vw; aspect-ratio: 1;
  transform: translateX(-50%);
  background:
    radial-gradient(circle at 32% 36%, color-mix(in srgb, var(--mint) 17%, transparent), transparent 56%),
    radial-gradient(circle at 70% 30%, color-mix(in srgb, var(--violet) 16%, transparent), transparent 58%),
    radial-gradient(circle at 52% 66%, color-mix(in srgb, var(--cyan) 11%, transparent), transparent 60%);
  filter: blur(26px);
  pointer-events: none;
  animation: drift 22s ease-in-out infinite alternate;
}
@keyframes drift {
  from { transform: translateX(-50%) translateY(0) scale(1); }
  to   { transform: translateX(-46%) translateY(26px) scale(1.07); }
}

.hero__inner {
  position: relative; z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.04fr) minmax(0, .96fr);
  gap: clamp(32px, 5vw, 64px);
  align-items: center;
}

.eyebrow {
  display: inline-flex; align-items: center; gap: 9px;
  font-size: .8rem; font-weight: 600;
  letter-spacing: .085em; text-transform: uppercase;
  color: var(--ink-mid);
  background: #ffffff08;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px 14px 6px 11px;
  margin-bottom: 22px;
}
.dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--mint);
  box-shadow: 0 0 0 0 color-mix(in srgb, var(--mint) 60%, transparent);
  animation: pulse 2.4s infinite;
}
@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 color-mix(in srgb, var(--mint) 55%, transparent); }
  70%  { box-shadow: 0 0 0 9px transparent; }
  100% { box-shadow: 0 0 0 0 transparent; }
}

.hero__title {
  font-size: clamp(2.2rem, 5.6vw, 3.9rem);
  font-weight: 800;
  margin-bottom: 20px;
}

.hero__lede {
  font-size: clamp(1rem, 1.5vw, 1.12rem);
  color: var(--ink-mid);
  max-width: 55ch;
  margin-bottom: 30px;
}

.hero__actions { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 22px; }

.hero__meta { font-size: .85rem; color: var(--ink-dim); font-family: var(--mono); }

/* ---------- terminal ---------- */
.hero__demo { position: relative; }

.term {
  background: #080a0e;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.term__bar {
  display: flex; align-items: center; gap: 12px;
  padding: 11px 15px;
  background: #0d1118;
  border-bottom: 1px solid var(--line-soft);
}
.term__dots { display: flex; gap: 6px; }
.term__dots i { width: 10px; height: 10px; border-radius: 50%; background: #2a3342; }
.term__dots i:first-child { background: #ff5f57; }
.term__dots i:nth-child(2) { background: #febc2e; }
.term__dots i:nth-child(3) { background: #28c840; }
.term__title {
  font-family: var(--mono); font-size: .76rem;
  color: var(--ink-dim); letter-spacing: .03em;
}

.term__body {
  margin: 0;
  padding: 18px 18px 22px;
  font-family: var(--mono);
  font-size: clamp(.68rem, 1.05vw, .78rem);
  line-height: 1.75;
  color: #b9c7d9;
  min-height: 310px;
  white-space: pre-wrap;
  word-break: break-word;
  tab-size: 2;
}
/* The transcript lives in a <code> element, which must not pick up the
   inline-code chip styling (background, border, padding) from the global rule. */
.term__body code {
  background: none;
  border: 0;
  padding: 0;
  border-radius: 0;
  font-size: inherit;
  color: inherit;
}

.term__body .ok   { color: var(--mint); }
.term__body .dim  { color: var(--ink-dim); }
.term__body .warn { color: var(--amber); }
.term__body .bad  { color: var(--rose); }
.term__body .key  { color: var(--cyan); }
.term__body .hl   { color: #fff; font-weight: 700; }

.caret {
  display: inline-block;
  width: 7px; height: 1.05em;
  background: var(--mint);
  vertical-align: text-bottom;
  animation: blink 1.05s steps(2, start) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

/* ---------- certificate badge ---------- */
.cert {
  position: absolute;
  right: -14px; bottom: -26px;
  background: color-mix(in srgb, var(--bg-raise) 94%, transparent);
  backdrop-filter: blur(10px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px 18px;
  box-shadow: var(--shadow);
  opacity: 0;
  transform: translateY(10px) scale(.96);
  transition: opacity .45s var(--ease-out), transform .45s var(--ease-out);
}
.cert.is-on { opacity: 1; transform: none; }

.cert__label {
  display: block;
  font-size: .68rem; font-weight: 700;
  letter-spacing: .1em; text-transform: uppercase;
  color: var(--ink-dim);
  margin-bottom: 9px;
}
.cert__list { list-style: none; margin: 0; padding: 0; display: grid; gap: 7px; }
.cert__list li {
  display: flex; align-items: center; gap: 9px;
  font-size: .82rem; font-weight: 600;
  color: var(--ink-dim);
  transition: color .3s var(--ease);
}
.cert__list li.is-on { color: var(--ink); }

.tick { width: 16px; height: 16px; flex: none; }
.tick path {
  fill: none; stroke: var(--mint);
  stroke-width: 2.6; stroke-linecap: round; stroke-linejoin: round;
  stroke-dasharray: 26;
  stroke-dashoffset: 26;
  transition: stroke-dashoffset .5s var(--ease-out);
}
.cert__list li.is-on .tick path { stroke-dashoffset: 0; }

/* ---------- stats ---------- */
.stats {
  border-block: 1px solid var(--line);
  background: var(--bg-alt);
}
.stats__grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
}
.stat {
  position: relative;
  padding: 28px 18px;
  text-align: center;
}
/* Dividers drawn per-cell rather than as a gap over a coloured grid background,
   which would bleed through the wrapper's horizontal padding at both edges. */
.stat + .stat::before {
  content: '';
  position: absolute;
  left: 0; top: 24%; bottom: 24%;
  width: 1px;
  background: var(--line-soft);
}
.stat b {
  display: block;
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  font-weight: 800;
  letter-spacing: -.03em;
  font-variant-numeric: tabular-nums;
  background: linear-gradient(135deg, var(--mint), var(--cyan));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.stat span { font-size: .8rem; color: var(--ink-dim); }

/* ---------- sections ---------- */
.section { padding: clamp(60px, 9vw, 112px) 0; }
.section--alt { background: var(--bg-alt); border-block: 1px solid var(--line); }

.sec-head { max-width: 62ch; margin: 0 auto clamp(36px, 5vw, 58px); text-align: center; }
.sec-head--left { margin-inline: 0; text-align: left; }
.sec-head h2 { font-size: clamp(1.65rem, 3.4vw, 2.5rem); margin-bottom: 14px; }
.sec-head p { color: var(--ink-mid); font-size: clamp(.96rem, 1.3vw, 1.06rem); }
.sec-head em { color: var(--ink); font-style: italic; }

/* ---------- compare ---------- */
.compare {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
  gap: 20px;
}
.compare__col {
  background: var(--bg-raise);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: clamp(22px, 3vw, 32px);
}
.compare__h { font-size: 1.04rem; margin-bottom: 16px; display: flex; align-items: center; gap: 9px; }
.compare__h::before {
  content: ''; width: 9px; height: 9px; border-radius: 50%; flex: none;
}
.compare__h--bad::before  { background: var(--rose); box-shadow: 0 0 10px var(--rose); }
.compare__h--good::before { background: var(--mint); box-shadow: 0 0 10px var(--mint); }

.list { list-style: none; margin: 0; padding: 0; display: grid; gap: 13px; }
.list li {
  position: relative;
  padding-left: 27px;
  font-size: .94rem;
  color: var(--ink-mid);
}
.list li::before {
  position: absolute; left: 0; top: -1px;
  font-weight: 700; font-size: 1rem;
}
.list--bad  li::before { content: '✕'; color: var(--rose); }
.list--good li::before { content: '✓'; color: var(--mint); }
.list--warn li::before { content: '◷'; color: var(--amber); }

/* ---------- pipeline ---------- */
.pipe { position: relative; }

.pipe__rail {
  height: 2px;
  background: var(--line);
  border-radius: 2px;
  margin-bottom: 22px;
  overflow: hidden;
}
.pipe__fill {
  display: block; height: 100%; width: 25%;
  background: linear-gradient(90deg, var(--mint), var(--cyan), var(--violet));
  transition: width .6s var(--ease-out), transform .6s var(--ease-out);
}

.pipe__tabs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin-bottom: 22px;
}
.pipe__tab {
  display: flex; flex-direction: column; align-items: flex-start; gap: 3px;
  font: inherit; text-align: left; cursor: pointer;
  background: var(--bg-raise);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 15px 17px;
  color: var(--ink-dim);
  transition: border-color .25s var(--ease), background .25s var(--ease),
              color .25s var(--ease), transform .25s var(--ease);
}
.pipe__tab:hover { border-color: #2b3545; transform: translateY(-2px); color: var(--ink-mid); }
.pipe__tab.is-active {
  color: var(--ink);
  border-color: color-mix(in srgb, var(--mint) 45%, transparent);
  background: color-mix(in srgb, var(--mint) 7%, var(--bg-raise));
}
.pipe__n { font-family: var(--mono); font-size: .72rem; opacity: .65; }
.pipe__name { font-weight: 700; font-size: 1.02rem; letter-spacing: -.01em; }

.pipe__panels {
  background: var(--bg-raise);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: clamp(24px, 3.4vw, 38px);
  min-height: 230px;
}
.pipe__panel { display: none; }
.pipe__panel.is-active { display: block; animation: fadeUp .4s var(--ease-out); }
.pipe__panel h3 { font-size: clamp(1.1rem, 2vw, 1.3rem); margin-bottom: 12px; }
.pipe__panel p { color: var(--ink-mid); max-width: 72ch; margin-bottom: 18px; }

@keyframes fadeUp { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }

.chips { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.chips li {
  font-size: .8rem; font-weight: 500;
  color: var(--ink-mid);
  background: #ffffff0a;
  border: 1px solid var(--line-soft);
  border-radius: 999px;
  padding: 5px 13px;
}

/* ---------- pillars ---------- */
.pillars {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 18px;
  margin-bottom: 26px;
}
.pillar {
  position: relative;
  background: var(--bg-raise);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: clamp(22px, 3vw, 30px);
  overflow: hidden;
  transition: border-color .3s var(--ease), transform .3s var(--ease);
}
.pillar::after {
  content: '';
  position: absolute; inset: 0 0 auto 0; height: 2px;
  background: linear-gradient(90deg, var(--mint), var(--cyan));
  transform: scaleX(0); transform-origin: left;
  transition: transform .45s var(--ease-out);
}
.pillar:hover { border-color: #2b3545; transform: translateY(-3px); }
.pillar:hover::after { transform: scaleX(1); }
.pillar__n {
  display: block;
  font-family: var(--mono); font-size: .76rem;
  color: var(--mint);
  margin-bottom: 10px;
}
.pillar h3 { font-size: 1.1rem; margin-bottom: 9px; }
.pillar p { color: var(--ink-mid); font-size: .93rem; }

/* ---------- note ---------- */
.note {
  background: color-mix(in srgb, var(--cyan) 6%, var(--bg-raise));
  border: 1px solid color-mix(in srgb, var(--cyan) 24%, transparent);
  border-left-width: 3px;
  border-radius: var(--radius);
  padding: 18px 22px;
  font-size: .94rem;
  color: var(--ink-mid);
}
.note strong { color: var(--ink); }
.note--warn {
  background: color-mix(in srgb, var(--amber) 7%, var(--bg-raise));
  border-color: color-mix(in srgb, var(--amber) 28%, transparent);
  margin-top: 26px;
}

/* ---------- overfitting ---------- */
.overfit {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
  gap: clamp(32px, 5vw, 60px);
  align-items: center;
}

.kv { margin: 0 0 22px; display: grid; gap: 14px; }
.kv > div { display: grid; grid-template-columns: 62px 1fr; gap: 16px; align-items: start; }
.kv dt {
  font-family: var(--mono); font-weight: 700; font-size: 1.05rem;
  color: var(--mint);
  text-align: right;
}
.kv dd { margin: 0; color: var(--ink-mid); font-size: .92rem; }

.overfit__viz {
  background: var(--bg-raise);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: clamp(22px, 3vw, 30px);
}

.vec {
  display: grid;
  grid-template-columns: repeat(11, 1fr);
  gap: 5px;
  margin-bottom: 14px;
}
.vec i {
  aspect-ratio: 1;
  border-radius: 3px;
  background: #ffffff0a;
  border: 1px solid var(--line-soft);
  opacity: 0;
  transform: scale(.4);
}
.vec.is-on i {
  animation: cellIn .42s var(--ease-out) forwards;
  animation-delay: var(--d, 0ms);
}
@keyframes cellIn { to { opacity: 1; transform: none; } }

.vec i.g { background: color-mix(in srgb, var(--mint) 55%, transparent);   border-color: transparent; }
.vec i.d { background: color-mix(in srgb, var(--rose) 48%, transparent);   border-color: transparent; }
.vec i.r { background: color-mix(in srgb, var(--cyan) 30%, transparent);   border-color: transparent; }

.vec__legend {
  display: flex; flex-wrap: wrap; gap: 16px;
  font-size: .76rem; color: var(--ink-dim);
  margin-bottom: 22px;
}
.vec__legend span { display: inline-flex; align-items: center; gap: 7px; }
.sw { width: 10px; height: 10px; border-radius: 3px; display: inline-block; }
.sw--gen { background: color-mix(in srgb, var(--mint) 55%, transparent); }
.sw--del { background: color-mix(in srgb, var(--rose) 48%, transparent); }
.sw--rem { background: color-mix(in srgb, var(--cyan) 30%, transparent); }

.gauge__track {
  position: relative;
  height: 9px;
  border-radius: 999px;
  background: linear-gradient(90deg,
    color-mix(in srgb, var(--mint) 28%, transparent),
    color-mix(in srgb, var(--amber) 28%, transparent) 50%,
    color-mix(in srgb, var(--rose) 30%, transparent));
  overflow: hidden;
}
.gauge__fill {
  position: absolute; inset: 0 auto 0 0;
  width: 0;
  background: linear-gradient(90deg, var(--mint), #39c8e8);
  border-radius: 999px;
  transition: width 1.1s var(--ease-out);
}
.gauge__mark {
  position: absolute; top: -4px; bottom: -4px;
  width: 2px;
  background: var(--ink);
  opacity: .5;
}
.gauge__labels {
  display: flex; justify-content: space-between; align-items: center;
  margin-top: 9px;
  font-size: .76rem; color: var(--ink-dim);
}
.gauge__val {
  font-family: var(--mono); font-weight: 700; font-size: .92rem;
  color: var(--mint);
  font-variant-numeric: tabular-nums;
}

/* ---------- cards ---------- */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
  gap: 18px;
}
.card {
  background: var(--bg-raise);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: clamp(22px, 3vw, 30px);
  transition: border-color .3s var(--ease), box-shadow .3s var(--ease), transform .2s var(--ease);
  transform-style: preserve-3d;
  will-change: transform;
}
.card:hover {
  border-color: #2b3545;
  box-shadow: 0 20px 44px -24px rgb(0 0 0 / .8);
}
.card__ico {
  display: grid; place-items: center;
  width: 42px; height: 42px;
  border-radius: 11px;
  background: linear-gradient(135deg,
    color-mix(in srgb, var(--mint) 18%, transparent),
    color-mix(in srgb, var(--violet) 16%, transparent));
  border: 1px solid var(--line);
  font-family: var(--mono); font-size: 1.05rem; font-weight: 700;
  color: var(--mint);
  margin-bottom: 16px;
}
.card h3 { font-size: 1.06rem; margin-bottom: 9px; }
.card p { color: var(--ink-mid); font-size: .93rem; }

/* ---------- tiers ---------- */
.tiers {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(265px, 1fr));
  gap: 18px;
}
.tier {
  background: var(--bg-raise);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: clamp(22px, 3vw, 30px);
  transition: transform .3s var(--ease), border-color .3s var(--ease);
}
.tier:hover { transform: translateY(-3px); border-color: #2b3545; }
.tier h3 { font-size: 1.04rem; margin-bottom: 11px; display: flex; flex-wrap: wrap; align-items: center; gap: 9px; }
.tier__tag {
  font-family: var(--mono); font-size: .7rem; font-weight: 700;
  letter-spacing: .06em; text-transform: uppercase;
  color: var(--mint);
  background: color-mix(in srgb, var(--mint) 12%, transparent);
  border: 1px solid color-mix(in srgb, var(--mint) 30%, transparent);
  border-radius: 6px;
  padding: 3px 8px;
}
.tier p { color: var(--ink-mid); font-size: .93rem; }

/* ---------- tabs ---------- */
.tabs {
  background: var(--bg-raise);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.tabs__list {
  display: flex; gap: 4px;
  padding: 10px 10px 0;
  border-bottom: 1px solid var(--line-soft);
  overflow-x: auto;
}
.tabs__btn {
  font: inherit; font-weight: 600; font-size: .9rem;
  background: none; border: 0;
  border-bottom: 2px solid transparent;
  color: var(--ink-dim);
  padding: 11px 17px;
  cursor: pointer;
  white-space: nowrap;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}
.tabs__btn:hover { color: var(--ink-mid); }
.tabs__btn.is-active { color: var(--ink); border-bottom-color: var(--mint); }

.tabs__panel { display: none; padding: clamp(18px, 2.6vw, 26px); }
.tabs__panel.is-active { display: block; animation: fadeUp .35s var(--ease-out); }
.tabs__note { margin-top: 14px; font-size: .86rem; color: var(--ink-dim); }

/* ---------- code blocks ---------- */
.code { position: relative; }
.code pre {
  margin: 0;
  background: #080a0e;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  padding: 20px 22px;
  overflow-x: auto;
  font-size: .82rem;
  line-height: 1.8;
}
.code--sm pre { padding: 15px 17px; font-size: .78rem; }
.code code { background: none; border: 0; padding: 0; color: #c3d2e4; font-size: inherit; }
.code .c { color: #5d6b7f; font-style: italic; }
.code .k { color: var(--violet); }
.code .s { color: var(--mint); }
.code .f { color: var(--cyan); }

.copy {
  position: absolute; top: 10px; right: 10px;
  z-index: 2;
  font: inherit; font-size: .72rem; font-weight: 600;
  background: #ffffff12;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink-mid);
  padding: 5px 11px;
  cursor: pointer;
  opacity: 0;
  transition: opacity .2s var(--ease), background .2s, color .2s;
}
.code:hover .copy, .copy:focus-visible { opacity: 1; }
.copy:hover { background: #ffffff1f; color: var(--ink); }
.copy.is-done { color: var(--mint); border-color: color-mix(in srgb, var(--mint) 40%, transparent); opacity: 1; }

/* ---------- install ---------- */
.install { display: grid; gap: 20px; margin-bottom: 30px; }
.install__step {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 18px;
  background: var(--bg-raise);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: clamp(20px, 3vw, 28px);
}
.install__n {
  display: grid; place-items: center;
  width: 44px; height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--mint), #39c8e8);
  color: #04130d;
  font-weight: 800; font-size: 1.05rem;
}
.install__step h3 { font-size: 1.06rem; margin-bottom: 13px; }
.install__hint { margin-top: 12px; font-size: .86rem; color: var(--ink-dim); }

.reqs {
  background: var(--bg-raise);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: clamp(22px, 3vw, 30px);
}
.reqs h3 { font-size: 1.04rem; margin-bottom: 14px; }
.reqs ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 11px; }
.reqs li {
  position: relative; padding-left: 20px;
  font-size: .93rem; color: var(--ink-mid);
}
.reqs li::before {
  content: ''; position: absolute; left: 0; top: .62em;
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--cyan);
}
.reqs strong { color: var(--ink); }

/* ---------- status ---------- */
.status {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
}
.status__col {
  background: var(--bg-raise);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: clamp(22px, 3vw, 32px);
}
.status__h { font-size: 1.04rem; margin-bottom: 16px; display: flex; align-items: center; gap: 9px; }
.status__h::before { content: ''; width: 9px; height: 9px; border-radius: 50%; flex: none; }
.status__h--on::before  { background: var(--mint); box-shadow: 0 0 10px var(--mint); }
.status__h--off::before { background: var(--amber); box-shadow: 0 0 10px var(--amber); }

/* ---------- cta ---------- */
.cta {
  padding: clamp(60px, 9vw, 110px) 0;
  background:
    radial-gradient(ellipse at 50% 0%, color-mix(in srgb, var(--mint) 11%, transparent), transparent 62%),
    var(--bg-alt);
  border-top: 1px solid var(--line);
  text-align: center;
}
.cta__inner { max-width: 60ch; margin-inline: auto; }
.cta h2 { font-size: clamp(1.6rem, 3.6vw, 2.5rem); margin-bottom: 14px; }
.cta p { color: var(--ink-mid); font-size: 1.04rem; margin-bottom: 28px; }
.cta__actions { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }

/* ---------- footer ---------- */
.foot { border-top: 1px solid var(--line); padding: 44px 0; background: var(--bg); }
.foot__inner {
  display: flex; flex-wrap: wrap; gap: 26px;
  justify-content: space-between; align-items: flex-start;
}
.foot__tag { margin-top: 11px; font-size: .86rem; color: var(--ink-dim); max-width: 42ch; }
.foot__links { display: grid; gap: 9px; font-size: .9rem; }
.foot__links a { color: var(--ink-mid); transition: color .2s var(--ease); }
.foot__links a:hover { color: var(--mint); }

/* ---------- toast ---------- */
.toast {
  position: fixed;
  bottom: 24px; left: 50%;
  transform: translate(-50%, 18px);
  z-index: 200;
  background: var(--bg-raise);
  border: 1px solid color-mix(in srgb, var(--mint) 40%, transparent);
  border-radius: 11px;
  padding: 10px 20px;
  font-size: .88rem; font-weight: 600;
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  transition: opacity .25s var(--ease), transform .25s var(--ease-out);
}
.toast.is-on { opacity: 1; transform: translate(-50%, 0); }

/* ---------- reveal ----------
   Scoped to .js (set by an inline script in <head>). Without scripting the
   content stays visible rather than being stranded at opacity 0. */
.js .reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .62s var(--ease-out), transform .62s var(--ease-out);
  transition-delay: calc(var(--reveal-delay, 0) * 85ms);
}
.js .reveal.is-in { opacity: 1; transform: none; }

/* Same reasoning for the terminal: the typewriter only runs with scripting, so
   the caret must not imply a prompt that will never type. */
html:not(.js) .caret { display: none; }

/* ---------- responsive ---------- */
@media (max-width: 1000px) {
  .hero__inner, .overfit { grid-template-columns: 1fr; }
  .hero__demo { order: 2; }
  .cert { right: 8px; bottom: -22px; }
  .stats__grid { grid-template-columns: repeat(3, 1fr); }
  /* Drop the divider on whichever cell now starts a row. */
  .stat:nth-child(3n+1)::before { display: none; }
  .pipe__tabs { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 760px) {
  html { scroll-padding-top: 76px; }
  .nav__links, .nav__cta { display: none; }
  .nav__burger { display: block; }
  .stats__grid { grid-template-columns: repeat(2, 1fr); }
  .stat:last-child { grid-column: 1 / -1; }
  .stat:nth-child(3n+1)::before { display: revert; }
  .stat:nth-child(2n+1)::before { display: none; }
  .hero__title { font-size: clamp(1.95rem, 8vw, 2.6rem); }
  .cert { position: static; margin-top: 16px; right: auto; bottom: auto; }
  .install__step { grid-template-columns: 1fr; }
  .kv > div { grid-template-columns: 50px 1fr; gap: 12px; }
  .foot__inner { flex-direction: column; }
}

@media (max-width: 420px) {
  .stats__grid { grid-template-columns: 1fr; }
  .stat:last-child { grid-column: auto; }
  .stat::before { display: none; }
  .pipe__tabs { grid-template-columns: 1fr; }
}

/* ---------- motion opt-out ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
  /* Needs .js to outrank `.js .reveal` above, so reduced-motion visitors never
     depend on the observer firing. */
  .js .reveal, .reveal { opacity: 1; transform: none; }
  .hero__canvas { opacity: .22; }
  .caret { display: none; }
  .vec i { opacity: 1; transform: none; }
  .cert { opacity: 1; transform: none; }
  .tick path { stroke-dashoffset: 0; }
}

/* ---------- color-mix() fallback ----------
   Older engines drop any declaration using color-mix(), which would leave a few
   surfaces fully transparent (the certificate card, the mobile menu, the vector
   cells). Restate just those with plain rgba so the page stays legible. */
@supports not (color: color-mix(in srgb, red, blue)) {
  ::selection        { background: rgb(83 224 166 / .32); }
  .nav__mobile       { background: rgb(10 12 16 / .96); }
  .cert              { background: rgb(17 21 29 / .96); }
  .note              { background: rgb(76 201 240 / .06); border-color: rgb(76 201 240 / .24); }
  .note--warn        { background: rgb(245 194 91 / .07); border-color: rgb(245 194 91 / .28); }
  .pipe__tab.is-active { background: #141c22; border-color: rgb(83 224 166 / .45); }
  .pillar::after     { background: linear-gradient(90deg, #53e0a6, #4cc9f0); }
  .vec i.g, .sw--gen { background: rgb(83 224 166 / .55); }
  .vec i.d, .sw--del { background: rgb(255 122 138 / .48); }
  .vec i.r, .sw--rem { background: rgb(76 201 240 / .30); }
  .gauge__track {
    background: linear-gradient(90deg,
      rgb(83 224 166 / .28), rgb(245 194 91 / .28) 50%, rgb(255 122 138 / .30));
  }
  .card__ico         { background: linear-gradient(135deg, rgb(83 224 166 / .18), rgb(157 123 255 / .16)); }
  .tier__tag         { background: rgb(83 224 166 / .12); border-color: rgb(83 224 166 / .30); }
  .toast             { border-color: rgb(83 224 166 / .40); }
  .copy.is-done      { border-color: rgb(83 224 166 / .40); }
  .btn--primary      { box-shadow: 0 10px 28px -12px rgb(83 224 166 / .7); }
  .cta               { background: #0d1016; }
  .hero__glow        { background: radial-gradient(circle at 50% 40%, rgb(83 224 166 / .14), transparent 60%); }
  .dot               { box-shadow: 0 0 0 0 rgb(83 224 166 / .55); }
}

/* ---------- print ---------- */
@media print {
  .nav, .scroll-progress, .hero__canvas, .hero__glow, .copy, .toast, .cta { display: none; }
  body { background: #fff; color: #000; }
  .section, .section--alt { padding: 20px 0; background: none; border: 0; }
}