/* CoHDL homepage — production adaptation of the v4 marketing concept. */

:root {
  color-scheme: dark;
  --canvas: #070b11;
  --surface-1: #0e151f;
  --surface-2: #131d2a;
  --border-1: #1d2a3a;
  --border-2: #2a3b50;
  --border-hover: #405772;
  --text: #f5f7fb;
  --text-2: #a7b3c4;
  --text-3: #8190a3;
  --accent: #62b5ff;
  --accent-hover: #8bc9ff;
  --accent-rgb: 98, 181, 255;
  --accent-ink: #04111f;
  --cyan: #5de0d0;
  --violet: #a99aff;
  --green: #6ee7ae;
  --red: #ff8894;
  --header-bg: rgba(7, 11, 17, 0.78);
  --ease: cubic-bezier(0.2, 0.8, 0.2, 1);
  --wrap: 1200px;
  --gutter: clamp(20px, 5vw, 64px);
  --radius: 14px;
  --workflow-curve-rise: clamp(82px, 12vw, 150px);
  --compiler-tape-gap: clamp(24px, 3vw, 40px);
  --font-display: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-body: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  background: #070b11;
}

html.is-restoring-fragment {
  scroll-behavior: auto;
}

body {
  min-width: 320px;
  margin: 0;
  overflow-x: hidden;
  background: var(--canvas);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  transition: background-color 0.35s var(--ease), color 0.35s var(--ease);
}

body[data-theme="light"] {
  color-scheme: light;
  --canvas: #f6f8fa;
  --surface-1: #ffffff;
  --surface-2: #f8fafc;
  --border-1: #dce3ea;
  --border-2: #bdc9d5;
  --border-hover: #7e8d9e;
  --text: #0b1520;
  --text-2: #334155;
  --text-3: #5a6878;
  --accent: #08785f;
  --accent-hover: #055b49;
  --accent-rgb: 8, 120, 95;
  --accent-ink: #ffffff;
  --cyan: #0b7370;
  --violet: #5b4fc8;
  --green: #166534;
  --header-bg: rgba(246, 248, 250, 0.86);
}

body,
h1,
h2,
h3,
p,
figure,
pre,
ol,
ul {
  margin-top: 0;
}

h1,
h2,
h3,
p,
figure,
pre,
ol,
ul {
  margin-bottom: 0;
}

ul,
ol {
  padding: 0;
  list-style: none;
}

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

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

button,
input {
  font: inherit;
}

button {
  color: inherit;
}

code,
pre,
.mono {
  font-family: var(--font-mono);
}

::selection {
  background: rgba(var(--accent-rgb), 0.28);
  color: var(--text);
}

:focus-visible {
  border-radius: 4px;
  outline: 2px solid var(--accent);
  outline-offset: 4px;
}

[id] {
  scroll-margin-top: 92px;
}

.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.display {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.045em;
  line-height: 0.98;
}

.skip-link {
  position: fixed;
  z-index: 1000;
  top: 10px;
  left: 10px;
  padding: 10px 16px;
  border-radius: 8px;
  background: #8bc9ff;
  color: #04111f;
  font-weight: 700;
  transform: translateY(-160%);
  transition: transform 0.2s var(--ease);
}

.skip-link:focus {
  transform: translateY(0);
}

/* The hero canvas is intentionally limited to the opening chapters. */
#pcb-canvas {
  position: fixed;
  z-index: 0;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  opacity: 0.72;
  transition: opacity 0.3s var(--ease);
}

body[data-theme="light"] #pcb-canvas {
  opacity: 0.22;
}

.hero,
.principles,
.compiler-tape,
.dark-tail,
.site-footer {
  color-scheme: dark;
  --canvas: #070b11;
  --surface-1: #0e151f;
  --surface-2: #131d2a;
  --border-1: #1d2a3a;
  --border-2: #2a3b50;
  --border-hover: #405772;
  --text: #f5f7fb;
  --text-2: #a7b3c4;
  --text-3: #8190a3;
  --accent: #62b5ff;
  --accent-hover: #8bc9ff;
  --accent-rgb: 98, 181, 255;
  --accent-ink: #04111f;
  --cyan: #5de0d0;
  --violet: #a99aff;
  --green: #6ee7ae;
}

.workflow {
  color-scheme: light;
  --canvas: #f6f8fa;
  --surface-1: #ffffff;
  --surface-2: #f8fafc;
  --border-1: #dce3ea;
  --border-2: #bdc9d5;
  --border-hover: #7e8d9e;
  --text: #0b1520;
  --text-2: #334155;
  --text-3: #5a6878;
  --accent: #08785f;
  --accent-hover: #055b49;
  --accent-rgb: 8, 120, 95;
  --accent-ink: #ffffff;
  --cyan: #0b7370;
  --violet: #5b4fc8;
  --green: #166534;
}

/* Header */
.site-header {
  position: fixed;
  z-index: 100;
  top: 0;
  right: 0;
  left: 0;
  border-bottom: 1px solid transparent;
  color: var(--text);
  transition: background 0.25s var(--ease), border-color 0.25s var(--ease), color 0.25s var(--ease);
}

.site-header.is-scrolled,
.site-header.nav-open {
  border-bottom-color: var(--border-1);
  background: var(--header-bg);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
  -webkit-backdrop-filter: blur(16px) saturate(135%);
  backdrop-filter: blur(16px) saturate(135%);
}

.header__inner {
  display: flex;
  height: 72px;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.62rem;
  color: var(--accent);
}

.brand__mark,
.hero__watermark {
  display: block;
  background: currentColor;
  -webkit-mask: url("/logo.svg") center / contain no-repeat;
  mask: url("/logo.svg") center / contain no-repeat;
}

.brand__mark {
  width: 25px;
  height: 25px;
}

.brand__name {
  color: var(--text);
  font-family: var(--font-display);
  font-size: 1.18rem;
  font-weight: 700;
  letter-spacing: -0.035em;
}

.nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav__link {
  padding: 0.55rem 0.8rem;
  border-radius: 8px;
  color: var(--text-2);
  font-size: 0.91rem;
  transition: color 0.2s var(--ease), background 0.2s var(--ease);
}

.nav__link:hover {
  background: rgba(var(--accent-rgb), 0.08);
  color: var(--text);
}

.nav__progress {
  min-width: 3.4ch;
  margin-left: 0.55rem;
  color: var(--text-3);
  font-size: 0.7rem;
  font-variant-numeric: tabular-nums;
  text-align: right;
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding: 0.78rem 1.35rem;
  border: 1px solid transparent;
  border-radius: 10px;
  font-size: 0.94rem;
  font-weight: 700;
  line-height: 1.2;
  transition: transform 0.2s var(--ease), background 0.2s var(--ease), border-color 0.2s var(--ease), color 0.2s var(--ease);
}

.button:hover {
  transform: translateY(-2px);
}

.button--small {
  min-height: 38px;
  padding: 0.48rem 0.9rem;
  font-size: 0.86rem;
}

.button--primary {
  background: var(--accent);
  color: var(--accent-ink);
  box-shadow: 0 14px 38px -20px rgba(var(--accent-rgb), 0.9);
}

.button--primary:hover {
  background: var(--accent-hover);
}

.button--ghost {
  border-color: var(--border-2);
  background: rgba(255, 255, 255, 0.015);
  color: var(--text);
}

.button--ghost:hover {
  border-color: var(--border-hover);
  background: rgba(var(--accent-rgb), 0.08);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  border: 1px solid var(--border-2);
  border-radius: 10px;
  background: var(--surface-1);
  cursor: pointer;
}

.nav-toggle span {
  width: 18px;
  height: 2px;
  background: var(--text);
  transition: transform 0.25s var(--ease);
}

.nav-toggle[aria-expanded="true"] span:first-child {
  transform: translateY(4px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:last-child {
  transform: translateY(-4px) rotate(-45deg);
}

.mobile-nav {
  display: none;
}

/* Section primitives */
.section {
  position: relative;
  z-index: 2;
  padding-block: clamp(88px, 12vw, 160px);
  color: var(--text);
}

.section-rule {
  position: relative;
  height: 1px;
  margin-bottom: clamp(44px, 6vw, 74px);
  background: var(--border-1);
}

.section-rule span {
  position: absolute;
  top: 50%;
  right: 0;
  padding-left: 14px;
  background: var(--canvas);
  color: var(--text-3);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  transform: translateY(-50%);
}

.section__header {
  max-width: 800px;
  margin-bottom: clamp(50px, 7vw, 86px);
}

.section__header--wide {
  max-width: 880px;
}

.section__title {
  color: var(--text);
  font-size: clamp(2.65rem, 6.2vw, 4.8rem);
}

.section__intro {
  max-width: 64ch;
  margin-top: 1.5rem;
  color: var(--text-2);
  font-size: clamp(1rem, 1.5vw, 1.18rem);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.68em;
  margin-bottom: 1.35rem;
  color: var(--text-3);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.eyebrow::after {
  width: 24px;
  height: 1px;
  background: var(--border-2);
  content: "";
}

.eyebrow__mark {
  color: var(--accent);
  font-size: 0.68em;
  animation: signal 3s var(--ease) infinite;
}

@keyframes signal {
  0%, 100% { opacity: 0.38; }
  50% { opacity: 1; }
}

/* Hero */
.hero {
  position: relative;
  z-index: 2;
  display: flex;
  min-height: 100svh;
  align-items: center;
  overflow: hidden;
  padding-block: 128px 82px;
  color: var(--text);
}

.hero__glow {
  position: absolute;
  z-index: -1;
  top: -16%;
  left: 50%;
  width: min(1120px, 100vw);
  height: 760px;
  background: radial-gradient(closest-side, rgba(98, 181, 255, 0.17), rgba(93, 224, 208, 0.05) 56%, transparent 75%);
  filter: blur(10px);
  pointer-events: none;
  transform: translateX(-50%);
}

.hero__watermark {
  position: absolute;
  z-index: -1;
  top: 50%;
  right: -5%;
  width: min(720px, 62vw);
  aspect-ratio: 1;
  color: var(--accent);
  opacity: 0.045;
  pointer-events: none;
  transform: translateY(-50%);
  animation: orbit 90s linear infinite;
}

@keyframes orbit {
  to { transform: translateY(-50%) rotate(360deg); }
}

.hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(420px, 0.9fr);
  align-items: center;
  gap: clamp(38px, 5vw, 72px);
}

.hero__title {
  max-width: 10.5ch;
  margin: 0.15rem 0 1.8rem;
  color: var(--text);
  font-size: clamp(3.25rem, 7.8vw, 6.9rem);
}

.hero__lede {
  max-width: 56ch;
  color: var(--text-2);
  font-size: clamp(1.03rem, 1.45vw, 1.2rem);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-top: 2.3rem;
}

.hero__demo {
  min-width: 0;
  perspective: 1200px;
}

.window {
  min-width: 0;
  overflow: hidden;
  border: 1px solid var(--border-1);
  border-radius: var(--radius);
  background: linear-gradient(180deg, var(--surface-2), var(--surface-1));
  box-shadow: 0 32px 90px -46px rgba(0, 0, 0, 0.9), inset 0 1px 0 rgba(255, 255, 255, 0.035);
  transition: transform 0.35s var(--ease), border-color 0.25s var(--ease);
}

.window--code {
  position: relative;
  z-index: 1;
}

.window--terminal {
  position: relative;
  z-index: 2;
  width: 92%;
  margin-top: -12px;
  margin-left: auto;
}

.window__bar {
  display: flex;
  min-height: 43px;
  align-items: center;
  gap: 11px;
  padding: 10px 15px;
  border-bottom: 1px solid var(--border-1);
  background: rgba(255, 255, 255, 0.015);
}

.window__dots {
  display: inline-flex;
  gap: 6px;
}

.window__dots i {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: #34475c;
}

.window__dots i:nth-child(2) { opacity: 0.8; }
.window__dots i:nth-child(3) { opacity: 0.6; }

.window__title,
.window__state {
  color: var(--text-3);
  font-family: var(--font-mono);
  font-size: 0.72rem;
}

.window__state {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-left: auto;
  color: var(--green);
}

.window__state i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
  box-shadow: 0 0 0 4px rgba(110, 231, 174, 0.1);
}

.window__code {
  min-height: 246px;
  padding: 17px 19px 20px;
  overflow-x: auto;
  color: var(--text-2);
  font-size: clamp(0.68rem, 1vw, 0.79rem);
  line-height: 1.72;
}

.window__code code {
  display: block;
  min-width: 560px;
}

.code-line {
  display: block;
  white-space: pre;
}

.window__terminal {
  min-height: 196px;
  padding: 16px 19px 19px;
  color: var(--text-2);
  font-size: clamp(0.69rem, 1vw, 0.79rem);
  line-height: 1.72;
}

.terminal-line {
  display: block;
  white-space: pre;
}

.terminal-line b {
  color: var(--green);
}

.terminal-line i {
  color: var(--text-3);
  font-style: normal;
}

.terminal-line--command {
  margin-bottom: 0.3rem;
  color: var(--text);
}

.terminal-line--result {
  margin-top: 0.25rem;
  color: var(--accent-hover);
}

.terminal-line--result em {
  display: inline-block;
  width: 7px;
  height: 1.05em;
  margin-left: 3px;
  background: var(--accent);
  vertical-align: -0.18em;
  animation: blink 1s steps(1) infinite;
}

@keyframes blink {
  50% { opacity: 0; }
}

.tok-key { color: var(--violet); }
.tok-type { color: var(--accent); }
.tok-module { color: var(--cyan); }
.tok-net { color: var(--green); }
.tok-unit { color: var(--accent-hover); }
.tok-attribute, .tok-punct, .tok-comment { color: var(--text-3); }

.hero__scroll-cue {
  position: absolute;
  bottom: 24px;
  left: 50%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 7px;
  color: var(--text-3);
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  transform: translateX(-50%);
}

.hero__scroll-cue i {
  width: 1px;
  height: 34px;
  background: linear-gradient(var(--accent), transparent);
  transform-origin: top;
  animation: scroll-cue 2.2s var(--ease) infinite;
}

@keyframes scroll-cue {
  0% { opacity: 0; transform: scaleY(0); }
  40% { opacity: 1; }
  100% { opacity: 0; transform: scaleY(1); }
}

/* Principles */
.section.principles {
  padding-bottom: calc(var(--workflow-curve-rise) + var(--compiler-tape-gap));
  background: linear-gradient(180deg, transparent, rgba(14, 21, 31, 0.36));
}

.principle-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.principle-card {
  position: relative;
  overflow: hidden;
  padding: clamp(26px, 3.2vw, 40px);
  border: 1px solid var(--border-1);
  border-radius: var(--radius);
  background: var(--surface-1);
  transition: transform 0.3s var(--ease), border-color 0.3s var(--ease), background 0.3s var(--ease);
}

.principle-card::before {
  position: absolute;
  inset: 0;
  background: radial-gradient(420px 190px at var(--pointer-x, 50%) var(--pointer-y, 0%), rgba(var(--accent-rgb), 0.13), transparent 65%);
  content: "";
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s var(--ease);
}

.principle-card:hover {
  border-color: var(--border-hover);
  background: var(--surface-2);
  transform: translateY(-4px);
}

html.js .principle-card.reveal.is-visible:hover {
  transform: translateY(-4px);
}

.principle-card:hover::before {
  opacity: 1;
}

.principle-card__number {
  position: relative;
  display: block;
  margin-bottom: 1.35rem;
  color: var(--accent);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
}

.principle-card h3 {
  position: relative;
  margin: 0 0 0.75rem;
  color: var(--text);
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 2vw, 1.45rem);
  font-weight: 600;
  letter-spacing: -0.02em;
}

.principle-card p {
  position: relative;
  color: var(--text-2);
  font-size: 0.97rem;
}

.principle-card p a {
  color: var(--accent-hover);
  text-decoration: underline;
  text-decoration-color: rgba(var(--accent-rgb), 0.45);
  text-underline-offset: 0.2em;
}

.compiler-tape {
  position: relative;
  z-index: 3;
  overflow: hidden;
  margin-top: var(--compiler-tape-gap);
  padding-block: 19px;
  border-block: 1px solid var(--border-1);
  background: var(--surface-1);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}

.compiler-tape__track {
  display: flex;
  width: max-content;
  align-items: center;
  color: var(--text-2);
  font-size: 0.84rem;
  white-space: nowrap;
  animation: marquee 28s linear infinite;
}

.compiler-tape__group {
  display: flex;
  flex-shrink: 0;
  align-items: center;
  gap: 2.2rem;
  padding-right: 2.2rem;
}

.compiler-tape__track i {
  color: var(--accent);
  font-size: 0.52rem;
  font-style: normal;
}

.compiler-tape:hover .compiler-tape__track {
  animation-play-state: paused;
}

@keyframes marquee {
  to { transform: translate3d(-50%, 0, 0); }
}

/* Pipeline */
.workflow {
  overflow: visible;
  background:
    radial-gradient(circle at 72% 18%, rgba(8, 120, 95, 0.08), transparent 28rem),
    var(--canvas);
  color: var(--text);
}

.workflow__curve {
  position: absolute;
  z-index: -1;
  top: calc(0px - var(--workflow-curve-rise));
  right: 0;
  left: 0;
  height: calc(var(--workflow-curve-rise) + 70px);
  overflow: hidden;
  pointer-events: none;
}

.workflow__curve::before {
  position: absolute;
  inset-block: 0;
  left: 50%;
  width: 120vw;
  border-radius: 50%;
  background: var(--canvas);
  content: "";
  transform: translateX(-50%);
}

@media (min-width: 1600px) {
  .workflow > .wrap {
    max-width: clamp(1200px, 75vw, 1440px);
  }
}

.pipeline {
  --pipeline-sticky-top: 84px;
  --pipeline-tab-height: 62px;
  position: relative;
  isolation: isolate;
}

.pipeline__stages {
  position: relative;
}

.pipeline-stage__marker {
  display: block;
  height: 1px;
  margin-bottom: -1px;
  scroll-margin-top: var(--pipeline-sticky-top);
}

.pipeline-stage {
  position: relative;
  min-width: 0;
}

.pipeline-stage:not(:last-of-type) {
  margin-bottom: 22px;
}

.pipeline-stage__tab-row {
  position: relative;
  z-index: 2;
}

.pipeline-stage__tab {
  position: relative;
  display: grid;
  min-height: var(--pipeline-tab-height);
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  gap: clamp(9px, 1.2vw, 14px);
  overflow: hidden;
  margin-bottom: -1px;
  padding: 13px clamp(14px, 1.8vw, 22px);
  border: 1px solid var(--border-1);
  border-radius: 18px 18px 0 0;
  background: var(--surface-2);
  box-shadow: 0 8px 22px rgba(15, 23, 42, 0.05);
  color: var(--text-2);
  font-family: var(--font-display);
  transition: color 0.24s var(--ease), background 0.24s var(--ease), border-color 0.24s var(--ease), box-shadow 0.24s var(--ease);
}

.pipeline-stage__tab::after {
  position: absolute;
  right: clamp(14px, 1.8vw, 22px);
  bottom: 10px;
  left: clamp(14px, 1.8vw, 22px);
  height: 2px;
  border-radius: 999px;
  background: var(--accent);
  content: "";
  opacity: 0;
  pointer-events: none;
  transform: scaleX(0.25);
  transform-origin: left;
  transition: opacity 0.24s var(--ease), transform 0.32s var(--ease);
}

.pipeline-stage__tab:hover {
  border-color: var(--border-2);
  background: var(--surface-1);
  color: var(--text);
}

.pipeline-stage:not(.is-past) .pipeline-stage__tab {
  border-color: var(--border-2);
  border-bottom-color: var(--surface-1);
  background: var(--surface-1);
}

.pipeline-stage__tab[aria-current="step"],
.pipeline-stage__tab[aria-current="step"]:hover {
  z-index: 1;
  border-color: var(--border-2);
  border-bottom-color: var(--surface-1);
  background: var(--surface-1);
  box-shadow: 0 -10px 26px rgba(15, 23, 42, 0.06);
  color: var(--text);
}

.pipeline-stage__tab[aria-current="step"]::after {
  opacity: 1;
  transform: scaleX(1);
}

.pipeline-stage__tab:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: -5px;
}

.pipeline-stage__index {
  color: var(--accent);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.1em;
}

.pipeline-stage__label {
  overflow: hidden;
  font-size: clamp(1.04rem, 1.8vw, 1.35rem);
  font-weight: 720;
  letter-spacing: -0.025em;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.pipeline-step {
  --pipeline-card-radius: clamp(18px, 2.4vw, 24px);
  position: relative;
  z-index: 1;
  display: grid;
  min-height: clamp(520px, 52vw, 600px);
  grid-template-columns: minmax(0, 0.76fr) minmax(0, 1.24fr);
  align-items: center;
  gap: clamp(28px, 4.5vw, 64px);
  overflow: hidden;
  padding: clamp(32px, 4.5vw, 56px);
  border: 1px solid var(--border-2);
  border-radius: 0 0 var(--pipeline-card-radius) var(--pipeline-card-radius);
  background: var(--surface-1);
  box-shadow: 0 34px 72px -54px rgba(15, 23, 42, 0.5);
}

.pipeline-step__copy {
  min-width: 0;
}

.pipeline-step__number {
  margin-bottom: 1rem;
  color: var(--accent);
  font-size: 0.76rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.pipeline-step__copy h3 {
  margin: 0 0 0.9rem;
  color: var(--text);
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2.3rem);
  line-height: 1.12;
  letter-spacing: -0.035em;
}

.pipeline-step__copy > p:last-child {
  max-width: 43ch;
  color: var(--text-2);
  font-size: 1rem;
}

.pipeline-step__copy code {
  padding: 0.1em 0.35em;
  border-radius: 4px;
  background: rgba(var(--accent-rgb), 0.09);
  color: var(--accent-hover);
  font-size: 0.88em;
}

@media (min-width: 1041px) and (min-height: 760px) and (prefers-reduced-motion: no-preference),
  (max-width: 1040px) and (orientation: portrait) and (prefers-reduced-motion: no-preference) {
  .pipeline.is-scroll-stack .pipeline-stage {
    min-height: clamp(676px, calc(100svh - var(--pipeline-sticky-top)), 980px);
    margin-bottom: 0;
    pointer-events: none;
    position: sticky;
    top: var(--pipeline-sticky-top);
  }

  .pipeline.is-scroll-stack .pipeline__stages::after {
    display: block;
    height: clamp(440px, 65svh, 720px);
    content: "";
    pointer-events: none;
  }

  .pipeline.is-scroll-stack .pipeline-stage[data-pipeline-stage="0"] { z-index: 1; }
  .pipeline.is-scroll-stack .pipeline-stage[data-pipeline-stage="1"] { z-index: 2; }
  .pipeline.is-scroll-stack .pipeline-stage[data-pipeline-stage="2"] { z-index: 3; }

  .pipeline.is-scroll-stack .pipeline-stage__tab-row {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: clamp(4px, 0.7vw, 8px);
    pointer-events: none;
  }

  .pipeline.is-scroll-stack .pipeline-stage__tab {
    grid-column: 1;
    border-radius: 18px 18px 0 0;
    pointer-events: auto;
  }

  .pipeline.is-scroll-stack .pipeline-stage:not(.is-past) .pipeline-stage__tab {
    border-radius: 18px 18px 0 0;
  }

  .pipeline.is-scroll-stack .pipeline-stage[data-pipeline-stage="1"] .pipeline-stage__tab {
    grid-column: 2;
  }

  .pipeline.is-scroll-stack .pipeline-stage[data-pipeline-stage="2"] .pipeline-stage__tab {
    grid-column: 3;
  }

  .pipeline.is-scroll-stack .pipeline-stage:not(.is-past) .pipeline-stage__tab[aria-current="step"] {
    border-radius: 20px 20px 0 0;
  }

  .pipeline.is-scroll-stack .pipeline-stage[data-pipeline-stage="0"] .pipeline-step {
    border-radius: 0 var(--pipeline-card-radius) var(--pipeline-card-radius) var(--pipeline-card-radius);
  }

  .pipeline.is-scroll-stack .pipeline-stage[data-pipeline-stage="1"] .pipeline-step {
    border-radius: var(--pipeline-card-radius);
  }

  .pipeline.is-scroll-stack .pipeline-stage[data-pipeline-stage="2"] .pipeline-step {
    border-radius: var(--pipeline-card-radius) 0 var(--pipeline-card-radius) var(--pipeline-card-radius);
  }

  .pipeline.is-scroll-stack .pipeline-stage[data-pipeline-stage="1"].is-current .pipeline-step {
    border-radius: 0 var(--pipeline-card-radius) var(--pipeline-card-radius) var(--pipeline-card-radius);
  }

  .pipeline.is-scroll-stack .pipeline-stage[data-pipeline-stage="2"].is-current .pipeline-step {
    border-radius: 0 0 var(--pipeline-card-radius) var(--pipeline-card-radius);
  }

  .pipeline.is-scroll-stack .pipeline-step {
    min-height: clamp(560px, calc(100svh - var(--pipeline-sticky-top) - var(--pipeline-tab-height) - 28px), 680px);
    pointer-events: auto;
  }

  .pipeline.is-scroll-stack .pipeline-stage.is-past .pipeline-step {
    pointer-events: none;
  }
}

/* Scroll-driven handoff from the light pipeline into the dark case study. */
.case-drawer[hidden] {
  display: none;
}

.workflow.has-case-drawer {
  padding-bottom: 0;
}

.workflow.has-case-drawer .pipeline.is-scroll-stack .pipeline__stages::after {
  display: none;
}

.workflow.has-case-drawer + .dark-tail {
  --case-drawer-content-overlap: min(65vh, 620px);
  margin-top: calc(0px - var(--case-drawer-content-overlap));
  background: transparent;
}

.workflow.has-case-drawer + .dark-tail::before {
  position: absolute;
  z-index: 0;
  top: calc(var(--case-drawer-content-overlap) - 1px);
  right: 0;
  bottom: 0;
  left: 0;
  background:
    radial-gradient(circle at 76% 6%, rgba(98, 181, 255, 0.1), transparent 30rem),
    #070b11;
  content: "";
  pointer-events: none;
}

.workflow.has-case-drawer + .dark-tail #case {
  scroll-margin-top: calc(100vh - var(--case-drawer-content-overlap));
}

@supports (height: 1svh) {
  .workflow.has-case-drawer + .dark-tail {
    --case-drawer-content-overlap: min(65svh, 620px);
  }

  .workflow.has-case-drawer + .dark-tail #case {
    scroll-margin-top: calc(100svh - var(--case-drawer-content-overlap));
  }
}

.case-drawer {
  position: relative;
  z-index: 4;
  isolation: isolate;
}

.case-drawer__hold {
  display: none;
}

.pipeline.is-scroll-stack .case-drawer__hold {
  display: block;
  height: 65vh;
  height: 65svh;
}

.case-drawer__runway {
  position: relative;
  height: 125vh;
  height: 125svh;
}

.pipeline:not(.is-scroll-stack) .case-drawer__runway {
  height: 100vh;
  height: 100svh;
}

.case-drawer__sticky {
  position: sticky;
  z-index: 4;
  top: 100vh;
  top: 100svh;
  height: 0;
}

.case-drawer__surface {
  position: absolute;
  bottom: 0;
  left: 50%;
  display: block;
  width: 100vw;
  max-width: none;
  height: 100vh;
  height: 100svh;
  overflow: visible;
  pointer-events: none;
  transform: translateX(-50%);
}

.case-drawer__surface path {
  fill: #070b11;
}

@media (prefers-reduced-motion: reduce), (forced-colors: active), print {
  .case-drawer {
    display: none !important;
  }

  .workflow.has-case-drawer {
    padding-bottom: clamp(88px, 12vw, 160px);
  }

  .workflow.has-case-drawer .pipeline.is-scroll-stack .pipeline__stages::after {
    display: block;
  }

  .workflow.has-case-drawer + .dark-tail {
    margin-top: 0;
    background: #070b11;
  }

  .workflow.has-case-drawer + .dark-tail::before {
    display: none;
  }

  .workflow.has-case-drawer + .dark-tail #case {
    scroll-margin-top: 92px;
  }
}

.pipeline-panel {
  position: relative;
  z-index: 1;
  min-width: 0;
  overflow: hidden;
  border: 1px solid var(--border-1);
  border-radius: 12px;
  background: var(--surface-1);
  box-shadow: 0 28px 70px -52px rgba(15, 23, 42, 0.48);
}

.pipeline-panel__ghost {
  position: absolute;
  z-index: -1;
  top: 50%;
  right: -0.02em;
  color: var(--accent);
  font-family: var(--font-display);
  font-size: clamp(9rem, 15vw, 14rem);
  font-weight: 700;
  letter-spacing: -0.08em;
  line-height: 0.72;
  opacity: 0.055;
  pointer-events: none;
  transform: translateY(-50%);
}

.panel__bar {
  padding: 11px 15px;
  border-bottom: 1px solid var(--border-1);
  background: rgba(11, 21, 32, 0.02);
  color: var(--text-3);
  font-size: 0.73rem;
}

.panel__bar span {
  margin-right: 9px;
  color: var(--border-hover);
  font-size: 0.55rem;
  letter-spacing: 0.08em;
}

.panel__code {
  padding: 14px 17px 17px;
  overflow-x: auto;
  color: var(--text-2);
  counter-reset: line;
  font-size: clamp(0.68rem, 1vw, 0.78rem);
  line-height: 1.76;
}

.panel__code:focus-visible {
  outline-offset: -4px;
}

.panel__code code {
  display: block;
  min-width: 540px;
}

.numbered-line {
  position: relative;
  display: block;
  min-height: 1.5em;
  padding-left: 3em;
  white-space: pre;
  counter-increment: line;
}

.numbered-line::before {
  position: absolute;
  left: 0;
  width: 2.1em;
  color: var(--text-3);
  content: counter(line, decimal-leading-zero);
  opacity: 0.58;
  text-align: right;
}

.verdict-panel,
.artifact-panel {
  padding: 17px 19px;
}

.panel__command {
  margin-bottom: 8px;
  color: var(--text);
  font-size: 0.78rem;
}

.panel__command span {
  color: var(--text-3);
}

.verdict-list li {
  display: grid;
  grid-template-columns: 8.5em 1fr auto;
  align-items: center;
  gap: 12px;
  padding: 10px 0;
  border-top: 1px solid var(--border-1);
  color: var(--text-2);
  font-size: 0.8rem;
}

.verdict-list li:first-child,
.artifact-list li:first-child {
  border-top: 0;
}

.verdict-list i {
  height: 1px;
  background: repeating-linear-gradient(90deg, var(--border-2) 0 5px, transparent 5px 10px);
}

.verdict-list b {
  color: var(--green);
}

.panel__foot {
  margin-top: 10px;
  color: var(--text-3);
  font-size: 0.76rem;
}

.panel__foot b {
  color: var(--accent);
}

.artifact-list li {
  display: grid;
  grid-template-columns: minmax(9.5em, 0.8fr) auto 1fr;
  align-items: center;
  gap: 11px;
  padding: 9px 0;
  border-top: 1px solid var(--border-1);
}

.artifact-list code {
  overflow: hidden;
  color: var(--accent);
  font-size: 0.76rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.artifact-list > li > span {
  color: var(--text-3);
}

.artifact-list p {
  color: var(--text-2);
  font-size: 0.8rem;
}

/* Dark proof + install */
.dark-tail {
  position: relative;
  z-index: 3;
  background:
    radial-gradient(circle at 76% 6%, rgba(98, 181, 255, 0.1), transparent 30rem),
    var(--canvas);
  color: var(--text);
}

.case-study__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.04fr) minmax(360px, 0.76fr);
  align-items: center;
  gap: clamp(42px, 6vw, 82px);
}

.case-study__title,
.install__title {
  margin: 0.1rem 0 1.35rem;
  color: var(--text);
  font-size: clamp(2.7rem, 6vw, 4.7rem);
}

.case-study__lede,
.install__lede {
  max-width: 57ch;
  color: var(--text-2);
  font-size: clamp(1.02rem, 1.45vw, 1.16rem);
}

.arrow-link {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  margin-top: 1.65rem;
  color: var(--accent);
  font-weight: 700;
}

.arrow-link span {
  transition: transform 0.2s var(--ease);
}

.arrow-link:hover span {
  transform: translateX(6px);
}

.case-study__stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-top: 2.5rem;
  border-top: 1px solid var(--border-1);
}

.case-study__stats li {
  display: flex;
  min-width: 0;
  flex-direction: column;
  gap: 0.25rem;
  padding: 1.2rem 0.75rem 0;
  border-left: 1px solid var(--border-1);
}

.case-study__stats li:first-child {
  padding-left: 0;
  border-left: 0;
}

.case-study__stats strong {
  color: var(--accent);
  font-size: clamp(1.4rem, 2.4vw, 2rem);
  font-variant-numeric: tabular-nums;
}

.case-study__stats span {
  color: var(--text-3);
  font-size: 0.72rem;
  line-height: 1.4;
}

.case-study__media {
  min-width: 0;
}

.case-study__frame {
  overflow: hidden;
  border: 1px solid var(--border-2);
  border-radius: var(--radius);
  background: var(--surface-1);
  box-shadow: 0 38px 110px -56px rgba(98, 181, 255, 0.58), 0 28px 64px -44px rgba(0, 0, 0, 0.94);
  transform: perspective(1100px) rotateX(var(--tilt-x, 0deg)) rotateY(var(--tilt-y, 0deg));
  transition: transform 0.36s var(--ease), border-color 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

.case-study__frame img {
  width: 100%;
  height: auto;
}

.case-study__media:hover .case-study__frame {
  border-color: var(--border-hover);
  box-shadow: 0 48px 130px -58px rgba(98, 181, 255, 0.7), 0 28px 64px -44px rgba(0, 0, 0, 0.94);
}

.case-study__media figcaption {
  margin-top: 0.85rem;
  color: var(--text-3);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
}

.install {
  padding-top: clamp(70px, 9vw, 120px);
}

.install__inner {
  max-width: 850px;
}

.install__lede code,
.install__note code {
  padding: 0.12em 0.4em;
  border-radius: 4px;
  background: rgba(var(--accent-rgb), 0.09);
  color: var(--accent-hover);
  font-size: 0.88em;
}

.copybox {
  display: flex;
  align-items: stretch;
  margin-top: 2rem;
  overflow: hidden;
  border: 1px solid var(--border-2);
  border-radius: 12px;
  background: var(--surface-1);
  transition: border-color 0.2s var(--ease);
}

.copybox:hover {
  border-color: var(--border-hover);
}

.copybox > code {
  min-width: 0;
  flex: 1;
  align-self: center;
  overflow-x: auto;
  padding: 1rem 1.2rem;
  color: var(--text);
  font-size: clamp(0.71rem, 1.45vw, 0.9rem);
  white-space: nowrap;
}

.copybox button {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding-inline: 1.3rem;
  border: 0;
  border-left: 1px solid var(--border-2);
  background: var(--surface-2);
  color: var(--text-2);
  cursor: pointer;
  font-size: 0.86rem;
  font-weight: 700;
  transition: background 0.2s var(--ease), color 0.2s var(--ease);
}

.copybox button:hover {
  background: rgba(var(--accent-rgb), 0.1);
  color: var(--accent-hover);
}

.copybox button:focus-visible {
  outline-offset: -3px;
}

.copybox button.is-copied {
  color: var(--green);
}

.copybox button.is-error {
  color: var(--red);
}

.install__note {
  margin-top: 1.5rem;
  color: var(--text-3);
  font-size: 0.92rem;
}

.install__note a {
  color: var(--accent-hover);
  text-decoration: underline;
  text-decoration-color: rgba(var(--accent-rgb), 0.45);
  text-underline-offset: 0.2em;
}

/* Footer */
.site-footer {
  position: relative;
  z-index: 3;
  overflow: hidden;
  padding: 58px var(--gutter) 32px;
  border-top: 1px solid var(--border-1);
  background: var(--surface-1);
  color: var(--text);
}

.footer__watermark {
  position: absolute;
  z-index: 0;
  bottom: -0.2em;
  left: 50%;
  color: var(--text-2);
  font-family: var(--font-display);
  font-size: clamp(6rem, 25vw, 21rem);
  font-weight: 700;
  letter-spacing: -0.065em;
  line-height: 0.78;
  opacity: 0.075;
  pointer-events: none;
  transform: translateX(-50%);
  user-select: none;
  white-space: nowrap;
}

.footer__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 28px;
}

.footer__nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.45rem 1.1rem;
}

.footer__nav a {
  color: var(--text-2);
  font-size: 0.88rem;
  transition: color 0.2s var(--ease);
}

.footer__nav a:hover {
  color: var(--text);
}

.footer__fine {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  color: var(--text-3);
  font-size: 0.7rem;
}

.footer__privacy {
  position: relative;
  z-index: 1;
  margin-top: 32px;
  color: var(--text-3);
  font-size: 0.68rem;
  text-align: center;
}

/* Decorative edge readout */
.edge-hud {
  position: fixed;
  z-index: 90;
  top: 50%;
  left: 0;
  display: none;
  width: 26px;
  flex-direction: column;
  align-items: center;
  gap: 15px;
  color: var(--text-3);
  opacity: 0.52;
  pointer-events: none;
  transform: translateY(-50%);
  user-select: none;
}

.edge-hud__caret {
  color: var(--accent);
  font-size: 0.48rem;
}

.edge-hud__section,
.edge-hud__position {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.18em;
  text-orientation: mixed;
  white-space: nowrap;
  writing-mode: vertical-rl;
}

/* Progressive enhancement: authored content is visible without JavaScript. */
html.js .reveal {
  opacity: 0;
  transform: translateY(24px);
}

html.js .reveal.is-visible {
  opacity: 1;
  transform: none;
  animation: reveal-in 0.7s var(--ease) backwards;
}

html.js .principle-card:nth-child(2).is-visible,
html.js .case-study__stats li:nth-child(2).is-visible { animation-delay: 0.06s; }
html.js .principle-card:nth-child(3).is-visible,
html.js .case-study__stats li:nth-child(3).is-visible { animation-delay: 0.12s; }
html.js .principle-card:nth-child(4).is-visible,
html.js .case-study__stats li:nth-child(4).is-visible { animation-delay: 0.18s; }

@keyframes reveal-in {
  from { opacity: 0; transform: translateY(24px); }
}

html:not(.js) .site-header {
  position: absolute;
  border-bottom-color: var(--border-1);
  background: rgba(7, 11, 17, 0.92);
}

html:not(.js) .nav__progress,
html:not(.js) .edge-hud {
  display: none;
}

html.js [data-demo].is-visible .code-line,
html.js [data-demo].is-visible .terminal-line {
  animation: line-in 0.4s var(--ease) both;
}

html.js [data-demo].is-visible .code-line:nth-child(2),
html.js [data-demo].is-visible .terminal-line:nth-child(2) { animation-delay: 0.07s; }
html.js [data-demo].is-visible .code-line:nth-child(3),
html.js [data-demo].is-visible .terminal-line:nth-child(3) { animation-delay: 0.12s; }
html.js [data-demo].is-visible .code-line:nth-child(4),
html.js [data-demo].is-visible .terminal-line:nth-child(4) { animation-delay: 0.17s; }
html.js [data-demo].is-visible .code-line:nth-child(5),
html.js [data-demo].is-visible .terminal-line:nth-child(5) { animation-delay: 0.22s; }
html.js [data-demo].is-visible .code-line:nth-child(6),
html.js [data-demo].is-visible .terminal-line:nth-child(6) { animation-delay: 0.27s; }
html.js [data-demo].is-visible .code-line:nth-child(7),
html.js [data-demo].is-visible .terminal-line:nth-child(7) { animation-delay: 0.32s; }
html.js [data-demo].is-visible .code-line:nth-child(8) { animation-delay: 0.37s; }
html.js [data-demo].is-visible .code-line:nth-child(9) { animation-delay: 0.42s; }
html.js [data-demo].is-visible .code-line:nth-child(10) { animation-delay: 0.47s; }
html.js [data-demo].is-visible .code-line:nth-child(11) { animation-delay: 0.52s; }

@keyframes line-in {
  from { opacity: 0; transform: translateY(5px); }
}

@media (min-width: 1240px) {
  .edge-hud { display: flex; }
}

@media (max-width: 1040px) {
  .hero__grid {
    grid-template-columns: minmax(0, 1fr) minmax(390px, 0.8fr);
  }

  .hero__title {
    font-size: clamp(3.1rem, 7vw, 5.5rem);
  }

  .pipeline-step {
    min-height: 640px;
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .pipeline-step__copy > p:last-child {
    max-width: 62ch;
  }
}

@media (max-width: 900px) {
  .nav { display: none; }
  html.js .nav-toggle { display: flex; }

  .mobile-nav {
    display: flex;
    max-height: none;
    flex-direction: column;
    overflow-y: auto;
    padding: 0 var(--gutter) 18px;
    border-top: 1px solid var(--border-1);
    background: var(--surface-1);
  }

  html.js .mobile-nav {
    max-height: 0;
    padding-bottom: 0;
    border-top-color: transparent;
    opacity: 0;
    visibility: hidden;
    transition: max-height 0.28s var(--ease), opacity 0.2s var(--ease), padding 0.28s var(--ease), visibility 0.28s;
  }

  html.js .site-header.nav-open .mobile-nav {
    max-height: min(380px, calc(100svh - 72px));
    padding-bottom: 18px;
    border-top-color: var(--border-1);
    opacity: 1;
    visibility: visible;
  }

  .mobile-nav a {
    padding: 0.82rem 0;
    border-bottom: 1px solid var(--border-1);
    color: var(--text-2);
    font-size: 1.05rem;
  }

  .mobile-nav a:last-child { border-bottom: 0; }

  html:not(.js) .site-header {
    position: relative;
    border-bottom-color: var(--border-1);
    background: var(--surface-1);
  }

  html:not(.js) .hero {
    padding-top: 72px;
  }

  .hero {
    min-height: auto;
    padding-block: 118px 96px;
  }

  .hero__grid {
    grid-template-columns: 1fr;
    gap: 52px;
  }

  .hero__title {
    max-width: 11ch;
    font-size: clamp(3.2rem, 11vw, 6rem);
  }

  .hero__demo {
    max-width: 650px;
  }

  .hero__watermark {
    top: 22%;
    right: -18%;
    width: 78vw;
  }

  .hero__scroll-cue { display: none; }

  .pipeline-stage__tab {
    min-height: 56px;
    gap: 8px;
    padding: 12px 14px;
    border-radius: 16px 16px 0 0;
  }

  .pipeline-step {
    padding: clamp(30px, 6vw, 48px);
  }

  .case-study__grid {
    grid-template-columns: 1fr;
  }

  .case-study__media {
    order: -1;
    width: min(100%, 520px);
    margin-inline: auto;
  }

  .case-study__frame { transform: none !important; }

  .footer__inner {
    grid-template-columns: 1fr;
    justify-items: start;
  }

  .footer__nav { justify-content: flex-start; }

  .footer__fine { align-items: flex-start; }
}

@media (max-width: 640px) {
  .section { padding-block: 82px; }

  .workflow.has-case-drawer + .dark-tail {
    --case-drawer-content-overlap: 45vh;
  }

  @supports (height: 1svh) {
    .workflow.has-case-drawer + .dark-tail {
      --case-drawer-content-overlap: 45svh;
    }
  }

  .hero { padding-block: 110px 72px; }

  .hero__title {
    margin-bottom: 1.35rem;
    font-size: clamp(3rem, 14.5vw, 5rem);
  }

  .hero__actions {
    display: grid;
    grid-template-columns: 1fr;
  }

  .hero__actions .button { width: 100%; }

  .window--terminal {
    width: 96%;
    margin-top: -8px;
  }

  .window__code {
    min-height: 218px;
    padding-inline: 15px;
    font-size: 0.66rem;
  }

  .window__terminal {
    min-height: 180px;
    padding-inline: 15px;
    font-size: 0.67rem;
  }

  .principle-grid { grid-template-columns: 1fr; }

  .pipeline {
    --pipeline-sticky-top: 76px;
    --pipeline-tab-height: 44px;
  }

  .pipeline-stage__tab {
    min-height: 52px;
    padding: 10px 8px;
  }

  .pipeline-stage__label {
    font-size: 0.94rem;
  }

  .pipeline-step {
    min-height: 0;
    gap: 30px;
    padding: 32px 22px;
  }

  .pipeline-panel__ghost { font-size: 8rem; }

  .artifact-list li {
    grid-template-columns: minmax(7.5em, 0.8fr) auto 1fr;
    gap: 8px;
  }

  .artifact-list code,
  .artifact-list p { font-size: 0.69rem; }

  .case-study__stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    row-gap: 1.2rem;
  }

  .case-study__stats li:nth-child(3) {
    padding-left: 0;
    border-left: 0;
  }

  .copybox {
    flex-direction: column;
  }

  .copybox > code {
    width: 100%;
  }

  .copybox button {
    min-height: 48px;
    justify-content: center;
    border-top: 1px solid var(--border-2);
    border-left: 0;
  }

  .site-footer { padding-inline: 0; }
}

@media (max-width: 640px) and (orientation: portrait) and (prefers-reduced-motion: no-preference) {
  .pipeline.is-scroll-stack .pipeline-stage {
    min-height: calc(100vh - var(--pipeline-sticky-top) - 12px);
    min-height: calc(100svh - var(--pipeline-sticky-top) - 12px);
  }

  .pipeline.is-scroll-stack .pipeline-stage__tab-row {
    gap: 3px;
  }

  .pipeline.is-scroll-stack .pipeline-stage__tab {
    min-width: 0;
    min-height: var(--pipeline-tab-height);
    gap: 4px;
    padding: 7px 6px;
    border-radius: 12px 12px 0 0;
  }

  .pipeline.is-scroll-stack .pipeline-stage:not(.is-past) .pipeline-stage__tab[aria-current="step"] {
    border-radius: 14px 14px 0 0;
  }

  .pipeline.is-scroll-stack .pipeline-stage__tab::after {
    right: 6px;
    bottom: 5px;
    left: 6px;
  }

  .pipeline.is-scroll-stack .pipeline-stage__index {
    font-size: 0.6rem;
    letter-spacing: 0.04em;
  }

  .pipeline.is-scroll-stack .pipeline-stage__label {
    font-size: 0.8rem;
    letter-spacing: -0.015em;
  }

  .pipeline.is-scroll-stack .pipeline-step {
    min-height: calc(100vh - var(--pipeline-sticky-top) - var(--pipeline-tab-height) - 12px);
    min-height: calc(100svh - var(--pipeline-sticky-top) - var(--pipeline-tab-height) - 12px);
    gap: 20px;
    padding: 24px 18px;
  }

  .pipeline.is-scroll-stack .pipeline-step__number {
    display: none;
  }

  .pipeline.is-scroll-stack .pipeline-step__copy h3 {
    margin-bottom: 0.65rem;
    font-size: clamp(1.35rem, 6.5vw, 1.65rem);
    line-height: 1.08;
  }

  .pipeline.is-scroll-stack .pipeline-step__copy > p:last-child {
    font-size: 0.9rem;
    line-height: 1.5;
  }

  .pipeline.is-scroll-stack .panel__bar {
    padding: 8px 12px;
    font-size: 0.66rem;
  }

  .pipeline.is-scroll-stack .panel__code {
    padding: 10px 12px 12px;
    font-size: 0.64rem;
    line-height: 1.6;
  }

  .pipeline.is-scroll-stack .verdict-panel,
  .pipeline.is-scroll-stack .artifact-panel {
    padding: 12px 13px;
  }

  .pipeline.is-scroll-stack .panel__command {
    font-size: 0.7rem;
  }

  .pipeline.is-scroll-stack .verdict-list li,
  .pipeline.is-scroll-stack .artifact-list li {
    padding-block: 7px;
  }

  .pipeline.is-scroll-stack .panel__foot {
    margin-top: 7px;
    font-size: 0.68rem;
  }
}

@media (max-width: 380px) {
  .hero__title { font-size: 2.85rem; }
  .window__code code { min-width: 520px; }

  .artifact-list li {
    grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  }

  .artifact-list p {
    min-width: 0;
    overflow-wrap: anywhere;
  }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }

  html.js .reveal {
    opacity: 1;
    transform: none;
  }

  .case-study__frame,
  .window { transform: none !important; }

  .edge-hud { display: none; }
}

@media (forced-colors: active) {
  .brand__mark,
  .hero__watermark { background: CanvasText; }

  .pipeline-stage__tab[aria-current="step"] {
    outline: 2px solid CanvasText;
    outline-offset: -5px;
  }

  .pipeline-stage__tab:focus-visible {
    outline: 3px solid Highlight;
    outline-offset: -7px;
  }

  .pipeline-stage__tab[aria-current="step"]:focus-visible {
    outline: 4px double Highlight;
    outline-offset: -8px;
  }

  .window__state i { border: 1px solid CanvasText; }
}