/*
  Kraftverk site design system
  Engineering instrument aesthetic — precise, restrained, technical.
  Deployed at https://theworker02.github.io/kraftverk/ (relative asset paths).
*/

:root {
  /* Field */
  --bg: #0b0e11;
  --bg-elevated: #101418;
  --bg-panel: #12171d;
  --bg-panel-2: #161c24;

  /* Ink */
  --fg: #e8eef4;
  --fg-soft: #c5d0db;
  --muted: #8b9aab;
  --muted-2: #6b7a8c;

  /* Accent (teal → steel) */
  --accent: #3d9a8b;
  --accent-2: #2a6f8a;
  --accent-soft: rgba(61, 154, 139, 0.14);
  --accent-mid: rgba(61, 154, 139, 0.28);
  --accent-glow: rgba(61, 154, 139, 0.08);

  /* Structure */
  --line: #243040;
  --line-strong: #334455;
  --danger: #c45c5c;
  --ok: #3d9a8b;
  --warn: #c4a35c;

  /* Type */
  --font-display: "Familjen Grotesk", "Segoe UI", sans-serif;
  --font: "Source Serif 4", "Georgia", serif;
  --font-ui: "Familjen Grotesk", "Segoe UI", sans-serif;
  --mono: "IBM Plex Mono", Consolas, monospace;

  /* Layout */
  --max: 72rem;
  --prose: 42rem;
  --radius: 10px;
  --radius-sm: 6px;
  --nav-h: 3.75rem;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --shadow-soft: 0 24px 60px rgba(0, 0, 0, 0.35);

  color-scheme: dark;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-ui);
  font-size: 1.05rem;
  color: var(--fg);
  background-color: var(--bg);
  background-image:
    radial-gradient(ellipse 900px 520px at 12% -8%, rgba(61, 154, 139, 0.12), transparent 55%),
    radial-gradient(ellipse 700px 480px at 92% 0%, rgba(42, 111, 138, 0.14), transparent 50%),
    radial-gradient(ellipse 600px 400px at 50% 100%, rgba(36, 48, 64, 0.45), transparent 60%),
    linear-gradient(180deg, #0b0e11 0%, #0d1116 40%, #0b0e11 100%);
  background-attachment: fixed;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* Subtle technical grid overlay */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: 0.35;
  background-image:
    linear-gradient(rgba(36, 48, 64, 0.35) 1px, transparent 1px),
    linear-gradient(90deg, rgba(36, 48, 64, 0.35) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 30%, black, transparent);
}

body > * {
  position: relative;
  z-index: 1;
}

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover {
  color: #5cb8a8;
}

img {
  max-width: 100%;
  height: auto;
}

/* ——— Nav ——— */
.top {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: var(--nav-h);
  max-width: var(--max);
  margin: 0 auto;
  padding: 0.65rem 1.35rem;
  backdrop-filter: blur(14px);
  background: rgba(11, 14, 17, 0.72);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease);
}

.top.is-scrolled {
  border-bottom-color: var(--line);
  background: rgba(11, 14, 17, 0.9);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--fg);
  text-decoration: none;
  font-family: var(--font-display);
  font-weight: 650;
  font-size: 1.05rem;
  letter-spacing: -0.03em;
}

.brand img {
  border-radius: 7px;
}

.brand:hover {
  color: var(--fg);
}

.top nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.15rem 1.1rem;
}

.top nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: -0.01em;
}

.top nav a:hover,
.top nav a[aria-current="page"] {
  color: var(--fg);
}

.top nav .nav-cta {
  padding: 0.4rem 0.85rem;
  border: 1px solid var(--accent);
  border-radius: var(--radius-sm);
  background: var(--accent-soft);
  color: var(--fg);
}

.top nav .nav-cta:hover {
  background: var(--accent-mid);
  color: var(--fg);
}

.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--line);
  color: var(--fg);
  border-radius: var(--radius-sm);
  padding: 0.35rem 0.65rem;
  font-family: var(--mono);
  font-size: 0.75rem;
  cursor: pointer;
}

/* ——— Hero ——— */
.hero {
  position: relative;
  min-height: calc(100vh - var(--nav-h));
  display: grid;
  align-items: center;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}

.hero-plane {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(ellipse 80% 70% at 70% 45%, rgba(61, 154, 139, 0.1), transparent 55%),
    radial-gradient(ellipse 50% 40% at 20% 80%, rgba(42, 111, 138, 0.12), transparent 50%);
}

.hero-plane::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(
      -12deg,
      transparent,
      transparent 40px,
      rgba(36, 48, 64, 0.18) 40px,
      rgba(36, 48, 64, 0.18) 41px
    );
  opacity: 0.5;
  mask-image: linear-gradient(90deg, transparent, black 30%, black 70%, transparent);
}

.hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 2.5rem;
  align-items: center;
  max-width: var(--max);
  margin: 0 auto;
  padding: 3.5rem 1.35rem 4rem;
  width: 100%;
}

.hero-copy {
  max-width: 34rem;
}

.hero-visual {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 280px;
}

.hero-visual .flow-frame {
  width: 100%;
  max-width: 520px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background:
    linear-gradient(160deg, rgba(18, 23, 29, 0.95), rgba(16, 20, 24, 0.85));
  box-shadow: var(--shadow-soft);
  overflow: hidden;
  animation: hero-presence 1.4s var(--ease) both;
}

.hero-visual .flow-frame img,
.hero-visual .flow-frame object,
.hero-visual .flow-frame svg {
  display: block;
  width: 100%;
  height: auto;
}

.flagline {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 1rem;
  color: var(--muted);
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-family: var(--mono);
}

.flagline img {
  width: 22px;
  height: 14px;
  border-radius: 2px;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.08);
}

.hero h1,
.brand-hero {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(3.2rem, 9vw, 5.4rem);
  font-weight: 700;
  letter-spacing: -0.045em;
  line-height: 0.98;
  color: var(--fg);
  animation: hero-rise 0.9s var(--ease) both;
}

.hero .headline {
  margin: 1.15rem 0 0;
  font-family: var(--font);
  font-size: clamp(1.25rem, 2.4vw, 1.55rem);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.35;
  color: var(--fg-soft);
  max-width: 28rem;
  animation: hero-rise 0.9s var(--ease) 0.08s both;
}

.hero .lede {
  margin: 1rem 0 0;
  color: var(--muted);
  font-size: 1.05rem;
  max-width: 30rem;
  font-family: var(--font-ui);
  animation: hero-rise 0.9s var(--ease) 0.16s both;
}

.cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1.85rem;
  animation: hero-rise 0.9s var(--ease) 0.24s both;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  text-decoration: none;
  padding: 0.72rem 1.15rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  color: var(--fg);
  font-family: var(--font-ui);
  font-weight: 550;
  font-size: 0.95rem;
  letter-spacing: -0.01em;
  transition: border-color 0.2s, background 0.2s, transform 0.2s var(--ease);
}

.btn:hover {
  border-color: var(--accent);
  color: var(--fg);
  transform: translateY(-1px);
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-soft), rgba(42, 111, 138, 0.2));
  border-color: var(--accent);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--accent-mid), rgba(42, 111, 138, 0.32));
}

.btn-ghost {
  background: transparent;
}

@keyframes hero-rise {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes hero-presence {
  from {
    opacity: 0;
    transform: translateY(18px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ——— Sections ——— */
.section {
  max-width: var(--max);
  margin: 0 auto;
  padding: 4.25rem 1.35rem;
  border-bottom: 1px solid var(--line);
}

.section-narrow {
  max-width: calc(var(--prose) + 2.7rem);
}

.section-label {
  margin: 0 0 0.65rem;
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
}

.section h2 {
  margin: 0 0 0.85rem;
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3.5vw, 2.35rem);
  font-weight: 650;
  letter-spacing: -0.03em;
  line-height: 1.15;
}

.section > p,
.prose p {
  color: var(--fg-soft);
  max-width: var(--prose);
}

.section > p.lead,
.lead {
  font-size: 1.15rem;
  color: var(--fg-soft);
}

.fine,
.muted {
  color: var(--muted);
  font-size: 0.92rem;
}

.note {
  margin: 1.25rem 0 0;
  padding: 0.9rem 1rem;
  border-left: 2px solid var(--accent);
  background: var(--accent-glow);
  color: var(--muted);
  font-size: 0.92rem;
  max-width: var(--prose);
}

/* Reveal */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* ——— Philosophy / comparison ——— */
.split-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: start;
  margin-top: 1.5rem;
}

.compare {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
  margin-top: 1.25rem;
}

.compare th,
.compare td {
  text-align: left;
  padding: 0.85rem 0.9rem;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

.compare th {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 500;
  background: rgba(18, 23, 29, 0.6);
}

.compare td:first-child {
  font-weight: 550;
  color: var(--fg);
  width: 28%;
}

.compare .yes {
  color: var(--ok);
}

.compare .no {
  color: var(--muted-2);
}

/* ——— Loop / diagram ——— */
.flow-block {
  margin-top: 1.5rem;
}

.flow-block .diagram {
  display: block;
  width: 100%;
  max-width: 720px;
  height: auto;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--bg-panel);
}

.loop-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.75rem;
  margin: 1.5rem 0 0;
  padding: 0;
  list-style: none;
}

.loop-steps li {
  padding: 1rem 1rem 1.1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, var(--bg-panel), transparent);
}

.loop-steps .step-n {
  display: block;
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--accent);
  letter-spacing: 0.08em;
  margin-bottom: 0.35rem;
}

.loop-steps strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.05rem;
  letter-spacing: -0.02em;
  margin-bottom: 0.35rem;
}

.loop-steps span {
  display: block;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.45;
}

.expanded-loop {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 1.5rem 0 0;
  padding: 0;
  list-style: none;
}

.expanded-loop li {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--muted);
  padding: 0.35rem 0.65rem;
  border: 1px solid var(--line);
  border-radius: 999px;
}

.expanded-loop li::after {
  content: "→";
  margin-left: 0.55rem;
  color: var(--line-strong);
}

.expanded-loop li:last-child::after {
  content: none;
}

/* ——— Kraft Index cascade (illustrative) ——— */
.cascade {
  margin-top: 1.75rem;
  display: grid;
  gap: 0.65rem;
  max-width: 36rem;
}

.cascade-row {
  display: grid;
  grid-template-columns: 7.5rem 1fr 3.5rem;
  gap: 0.75rem;
  align-items: center;
}

.cascade-row .cat {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--fg-soft);
}

.cascade-bar {
  height: 10px;
  border-radius: 999px;
  background: var(--bg-panel);
  border: 1px solid var(--line);
  overflow: hidden;
}

.cascade-bar > i {
  display: block;
  height: 100%;
  width: 0;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transition: width 1.1s var(--ease);
}

.cascade.is-visible .cascade-bar > i {
  width: var(--w);
}

.cascade-row .wt {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--muted);
  text-align: right;
}

.cascade-result {
  margin-top: 1.25rem;
  padding: 1rem 1.15rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--accent-glow);
  max-width: 36rem;
}

.cascade-result .idx {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--fg);
}

.cascade-result .idx span {
  color: var(--accent);
}

/* ——— Hardware callout ——— */
.hw-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 1.5rem;
}

.hw-panel {
  padding: 1.25rem 1.35rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-panel);
}

.hw-panel h3 {
  margin: 0 0 0.75rem;
  font-family: var(--font-display);
  font-size: 1.05rem;
  letter-spacing: -0.02em;
}

.hw-panel.ok {
  border-color: rgba(61, 154, 139, 0.45);
}

.hw-panel.blocked {
  border-color: rgba(196, 92, 92, 0.35);
}

.hw-panel ul {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--fg-soft);
  font-size: 0.92rem;
}

.hw-panel li + li {
  margin-top: 0.35rem;
}

.code-inline,
code {
  font-family: var(--mono);
  font-size: 0.88em;
}

code:not(pre code) {
  padding: 0.12em 0.35em;
  border-radius: 4px;
  background: rgba(36, 48, 64, 0.65);
  border: 1px solid var(--line);
}

pre {
  background: var(--bg-panel);
  border: 1px solid var(--line);
  padding: 1.1rem 1.2rem;
  overflow: auto;
  border-radius: var(--radius);
  margin: 1.1rem 0;
}

pre code {
  font-size: 0.85rem;
  line-height: 1.55;
  color: var(--fg-soft);
}

/* ——— Get started path ——— */
.path {
  display: grid;
  gap: 0.85rem;
  margin-top: 1.5rem;
  counter-reset: path;
}

.path-step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem;
  padding: 1.1rem 1.2rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(135deg, rgba(18, 23, 29, 0.9), transparent);
}

.path-step::before {
  counter-increment: path;
  content: counter(path, decimal-leading-zero);
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--accent);
  padding-top: 0.15rem;
}

.path-step h3 {
  margin: 0 0 0.35rem;
  font-family: var(--font-display);
  font-size: 1.05rem;
  letter-spacing: -0.02em;
}

.path-step p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

/* ——— Etymology ——— */
.etymology {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1.25rem;
  align-items: start;
  margin-top: 1.25rem;
  padding: 1.35rem;
  border: 1px solid var(--line);
  border-radius: 12px;
  background:
    linear-gradient(135deg, rgba(61, 154, 139, 0.06), transparent 40%),
    var(--bg-panel);
  max-width: 40rem;
}

.etymology .flag-lg {
  width: 56px;
  height: 36px;
  border-radius: 3px;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.08);
}

.etymology h3 {
  margin: 0 0 0.4rem;
  font-family: var(--font-display);
  font-size: 1.2rem;
  letter-spacing: -0.02em;
}

.etymology p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.etymology em {
  color: var(--fg-soft);
  font-style: normal;
  font-family: var(--font);
}

/* ——— Docs layout ——— */
.docs-shell {
  display: grid;
  grid-template-columns: 15.5rem 1fr;
  gap: 2rem;
  max-width: var(--max);
  margin: 0 auto;
  padding: 2rem 1.35rem 4rem;
  align-items: start;
}

.docs-nav {
  position: sticky;
  top: calc(var(--nav-h) + 1rem);
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(16, 20, 24, 0.85);
  backdrop-filter: blur(10px);
}

.docs-nav h2 {
  margin: 0 0 0.75rem;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 500;
}

.docs-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.docs-nav a {
  display: block;
  padding: 0.35rem 0.45rem;
  color: var(--muted);
  text-decoration: none;
  font-size: 0.88rem;
  border-radius: 4px;
}

.docs-nav a:hover,
.docs-nav a[aria-current="page"] {
  color: var(--fg);
  background: var(--accent-soft);
}

.docs-main {
  min-width: 0;
  max-width: 46rem;
}

.docs-main h1 {
  margin: 0 0 0.75rem;
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 2.75rem);
  letter-spacing: -0.035em;
  line-height: 1.1;
}

.docs-main h2 {
  margin: 2.25rem 0 0.75rem;
  font-family: var(--font-display);
  font-size: 1.45rem;
  letter-spacing: -0.025em;
}

.docs-main h3 {
  margin: 1.5rem 0 0.5rem;
  font-family: var(--font-display);
  font-size: 1.1rem;
  letter-spacing: -0.02em;
}

.docs-main p,
.docs-main li {
  color: var(--fg-soft);
}

.docs-main ul,
.docs-main ol {
  padding-left: 1.2rem;
}

.docs-main li + li {
  margin-top: 0.35rem;
}

.crumb {
  margin: 0 0 1rem;
  font-size: 0.85rem;
  color: var(--muted);
}

.crumb a {
  color: var(--muted);
  text-decoration: none;
}

.crumb a:hover {
  color: var(--accent);
}

.docs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 0.85rem;
  margin-top: 1.5rem;
}

.doc-card {
  display: block;
  padding: 1.15rem 1.2rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-panel);
  text-decoration: none;
  color: inherit;
  transition: border-color 0.2s, transform 0.2s var(--ease);
}

.doc-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  color: inherit;
}

.doc-card h3 {
  margin: 0 0 0.4rem;
  font-family: var(--font-display);
  font-size: 1.05rem;
  color: var(--fg);
}

.doc-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.88rem;
}

table.data {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  margin: 1rem 0 1.5rem;
}

table.data th,
table.data td {
  text-align: left;
  padding: 0.7rem 0.75rem;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

table.data th {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 500;
}

.mermaid {
  margin: 1.25rem 0;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-panel);
  overflow-x: auto;
}

.mermaid svg {
  max-width: 100%;
  height: auto;
}

.status-pill {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.72rem;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  border: 1px solid var(--line);
  color: var(--muted);
}

.status-pill.working {
  border-color: rgba(61, 154, 139, 0.5);
  color: var(--ok);
  background: var(--accent-soft);
}

.status-pill.scaffold {
  border-color: rgba(196, 163, 92, 0.45);
  color: var(--warn);
}

/* ——— Download page ——— */
.os-tabs {
  display: flex;
  gap: 0.5rem;
  margin: 1.25rem 0 0;
}

.os-tabs button {
  font-family: var(--font-ui);
  font-size: 0.9rem;
  padding: 0.5rem 0.95rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  background: transparent;
  color: var(--muted);
  cursor: pointer;
}

.os-tabs button[aria-selected="true"] {
  border-color: var(--accent);
  color: var(--fg);
  background: var(--accent-soft);
}

.os-panel[hidden] {
  display: none;
}

/* ——— Footer ——— */
.site-footer {
  max-width: var(--max);
  margin: 0 auto;
  padding: 2.5rem 1.35rem 3.5rem;
  color: var(--muted);
  font-size: 0.88rem;
  border-top: 1px solid transparent;
}

.site-footer .footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 1.5rem;
  margin-bottom: 1.75rem;
}

.site-footer h3 {
  margin: 0 0 0.65rem;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted-2);
  font-weight: 500;
}

.site-footer ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-footer li + li {
  margin-top: 0.35rem;
}

.site-footer a {
  color: var(--fg-soft);
  text-decoration: none;
}

.site-footer a:hover {
  color: var(--accent);
}

.footer-legal {
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
  max-width: 48rem;
}

.footer-legal p + p {
  margin-top: 0.55rem;
}

/* ——— Page enter ——— */
.page-enter {
  animation: page-in 0.45s var(--ease) both;
}

@keyframes page-in {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ——— Responsive ——— */
@media (max-width: 960px) {
  .hero-inner {
    grid-template-columns: 1fr;
    padding-top: 2.5rem;
  }

  .hero-visual {
    order: -1;
    min-height: 0;
  }

  .hero {
    min-height: auto;
  }

  .loop-steps {
    grid-template-columns: 1fr 1fr;
  }

  .split-2,
  .hw-grid,
  .docs-shell,
  .site-footer .footer-grid {
    grid-template-columns: 1fr;
  }

  .docs-nav {
    position: static;
  }
}

@media (max-width: 640px) {
  .top nav {
    display: none;
  }

  .top.is-open nav {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    width: 100%;
    padding-bottom: 0.75rem;
  }

  .top.is-open {
    flex-wrap: wrap;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .loop-steps {
    grid-template-columns: 1fr;
  }

  .cascade-row {
    grid-template-columns: 1fr;
    gap: 0.25rem;
  }

  .cascade-row .wt {
    text-align: left;
  }

  .hero h1,
  .brand-hero {
    font-size: clamp(2.6rem, 14vw, 3.4rem);
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

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

  .cascade-bar > i {
    width: var(--w) !important;
  }
}