/* =========================================================================
   NetProbe — landing page
   Cool near-black canvas · cyan→indigo gradient system · glass depth
   ========================================================================= */

/* ---------- tokens ---------- */
:root {
  --bg: #090A0D;
  --bg-2: #0C0E13;
  --elev: #12141B;

  --text: #F4F6FA;
  --text-2: #9AA4B3;
  --text-3: #5B6473;

  --border: rgba(255, 255, 255, 0.08);
  --border-2: rgba(255, 255, 255, 0.14);
  --card: rgba(255, 255, 255, 0.024);
  --card-2: rgba(255, 255, 255, 0.04);

  --cyan: #2DD4EE;
  --sky: #38BDF8;
  --indigo: #6366F1;
  --violet: #8B7CF6;
  --emerald: #34D399;

  --grad: linear-gradient(135deg, #2DD4EE 0%, #4F8BF5 48%, #7C6FF0 100%);
  --grad-text: linear-gradient(120deg, #7FE9F7 0%, #9DB4FF 55%, #C4B6FF 100%);
  --glow-cyan: rgba(45, 212, 238, 0.35);
  --glow-indigo: rgba(99, 102, 241, 0.30);

  /* per-layer decode hues */
  --l-frame: #94A3B8;
  --l-network: #2DD4EE;
  --l-transport: #818CF8;
  --l-application: #34D399;

  --font-display: "Space Grotesk", system-ui, sans-serif;
  --font-body: "Inter", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;

  --maxw: 1120px;
  --gutter: clamp(1.25rem, 4vw, 2.5rem);
}

/* ---------- reset & base ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  position: relative;
}

/* ambient glow + grid texture */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  background:
    radial-gradient(120% 80% at 50% -10%, rgba(79, 139, 245, 0.18), transparent 60%),
    radial-gradient(90% 60% at 85% 8%, rgba(124, 111, 240, 0.12), transparent 55%),
    radial-gradient(70% 50% at 10% 20%, rgba(45, 212, 238, 0.08), transparent 55%);
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0.5;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(120% 90% at 50% 0%, black, transparent 62%);
  -webkit-mask-image: radial-gradient(120% 90% at 50% 0%, black, transparent 62%);
}

h1,
h2,
h3 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.08;
  letter-spacing: -0.025em;
  margin: 0;
}

h2 {
  font-size: clamp(1.9rem, 3.4vw, 2.6rem);
  font-weight: 700;
}

h3 {
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

p {
  margin: 0;
}

a {
  color: var(--sky);
  text-decoration: none;
  transition: color 0.15s ease;
}

a:hover {
  color: #7dd3fc;
}

.mono {
  font-family: var(--font-mono);
  font-size: 0.86em;
  letter-spacing: -0.01em;
}

.grad-text {
  background: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

:focus-visible {
  outline: 2px solid var(--sky);
  outline-offset: 3px;
  border-radius: 4px;
}

.skip-link {
  position: fixed;
  left: 1rem;
  top: 0.75rem;
  z-index: 100;
  transform: translateY(-160%);
  padding: 0.5rem 0.9rem;
  background: var(--sky);
  color: #05121b;
  font-weight: 600;
  border-radius: 6px;
  transition: transform 0.15s ease;
}

.skip-link:focus {
  transform: none;
}

/* ---------- layout ---------- */
.wrap {
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

section {
  position: relative;
}

.divider {
  border: none;
  border-top: 1px solid var(--border);
  max-width: var(--maxw);
  margin-inline: auto;
}

.section-head {
  max-width: 46rem;
  margin-bottom: clamp(2rem, 5vw, 3.25rem);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-2);
  margin-bottom: 1rem;
}

.eyebrow::before {
  content: "";
  width: 1.4rem;
  height: 1px;
  background: linear-gradient(90deg, var(--cyan), transparent);
}

.section-head p {
  color: var(--text-2);
  font-size: 1.075rem;
  margin-top: 0.85rem;
  max-width: 42rem;
}

/* ---------- nav ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 40;
  background: color-mix(in srgb, var(--bg) 72%, transparent);
  backdrop-filter: blur(16px) saturate(150%);
  -webkit-backdrop-filter: blur(16px) saturate(150%);
  border-bottom: 1px solid var(--border);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding-block: 0.8rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--text);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.08rem;
  letter-spacing: -0.02em;
}

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

.brand svg {
  width: 26px;
  height: 26px;
  flex-shrink: 0;
  border-radius: 7px;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav__links a {
  color: var(--text-2);
  font-size: 0.9375rem;
  font-weight: 500;
}

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

.nav__cta {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 0.9rem;
  border: 1px solid var(--border-2);
  border-radius: 8px;
  color: var(--text) !important;
  font-size: 0.9rem;
}

.nav__cta:hover {
  border-color: var(--sky);
  background: rgba(56, 189, 248, 0.08);
}

.nav__toggle {
  display: none;
}

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-body);
  font-size: 0.975rem;
  font-weight: 600;
  padding: 0.8rem 1.35rem;
  border-radius: 10px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.1s ease, box-shadow 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

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

.btn--primary {
  background: var(--grad);
  color: #fff;
  box-shadow: 0 8px 30px -8px var(--glow-indigo), inset 0 1px 0 rgba(255, 255, 255, 0.25);
}

.btn--primary:hover {
  color: #fff;
  box-shadow: 0 14px 40px -8px var(--glow-cyan), inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

.btn--ghost {
  background: var(--card-2);
  color: var(--text);
  border-color: var(--border-2);
}

.btn--ghost:hover {
  color: var(--text);
  border-color: var(--border-2);
  background: rgba(255, 255, 255, 0.07);
}

.btn svg {
  width: 17px;
  height: 17px;
}

/* ---------- hero ---------- */
.hero {
  padding-block: clamp(3.5rem, 9vw, 6.5rem) clamp(3rem, 7vw, 5rem);
  text-align: center;
}

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.4rem 0.9rem;
  border: 1px solid var(--border-2);
  border-radius: 999px;
  background: var(--card);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.02em;
  color: var(--text-2);
  margin-bottom: 1.75rem;
}

.hero__eyebrow .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--emerald);
  box-shadow: 0 0 0 3px rgba(52, 211, 153, 0.2);
}

.hero h1 {
  font-size: clamp(2.9rem, 6.4vw, 5.25rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1.02;
  margin-inline: auto;
  max-width: 16ch;
}

.hero__sub {
  margin: 1.5rem auto 0;
  max-width: 56ch;
  color: var(--text-2);
  font-size: clamp(1.05rem, 1.6vw, 1.2rem);
}

.hero__sub strong {
  color: var(--text);
  font-weight: 600;
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  justify-content: center;
  margin-top: 2.25rem;
}

.badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
  margin-top: 1.75rem;
}

.badge {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  color: var(--text-2);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.28rem 0.65rem;
  background: var(--card);
}

/* ---------- inspector (signature) ---------- */
.inspector {
  margin: clamp(3rem, 7vw, 5rem) auto 0;
  max-width: 960px;
  text-align: left;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.04), transparent 40%),
    var(--elev);
  border: 1px solid var(--border-2);
  border-radius: 16px;
  overflow: hidden;
  box-shadow:
    0 40px 120px -40px rgba(0, 0, 0, 0.8),
    0 0 0 1px rgba(255, 255, 255, 0.02),
    0 0 80px -40px var(--glow-indigo);
  position: relative;
}

.inspector::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--cyan), var(--indigo), transparent);
  opacity: 0.6;
}

.inspector__bar {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.85rem 1.1rem;
  border-bottom: 1px solid var(--border);
  background: rgba(0, 0, 0, 0.25);
}

.inspector__bar .dots {
  display: flex;
  gap: 0.4rem;
}

.inspector__bar .dots i {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--border-2);
}

.inspector__title {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-2);
}

.inspector__live {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--emerald);
}

.inspector__live .pulse {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--emerald);
  animation: pulse 1.6s ease-in-out infinite;
}

@keyframes pulse {

  0%,
  100% {
    box-shadow: 0 0 0 0 rgba(52, 211, 153, 0.5);
  }

  50% {
    box-shadow: 0 0 0 5px rgba(52, 211, 153, 0);
  }
}

.inspector__body {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
}

.inspector__hex {
  padding: 1.35rem;
  border-right: 1px solid var(--border);
}

.hex-meta {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-3);
  margin-bottom: 0.85rem;
}

.hex-meta b {
  color: var(--sky);
  font-weight: 500;
}

.hexwrap {
  overflow-x: auto;
}

.hex {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  letter-spacing: 0.02em;
  line-height: 2;
  display: flex;
  flex-wrap: wrap;
  gap: 0.12rem;
  min-height: 8em;
  align-content: flex-start;
}

.hx {
  color: var(--text-3);
  padding: 0.1rem 0.24rem;
  border-radius: 4px;
  transition: color 0.18s ease, background-color 0.25s ease, box-shadow 0.25s ease;
}

.hx.is-on {
  color: var(--text-2);
}

.hx.is-active {
  color: #fff;
  background: var(--sky);
  box-shadow: 0 0 14px -2px var(--glow-cyan);
}

.hx--frame.is-lit {
  color: #cbd5e1;
  background: color-mix(in srgb, var(--l-frame) 16%, transparent);
}

.hx--network.is-lit {
  color: #a5f3fc;
  background: color-mix(in srgb, var(--l-network) 16%, transparent);
}

.hx--transport.is-lit {
  color: #c7d2fe;
  background: color-mix(in srgb, var(--l-transport) 18%, transparent);
}

.hx--application.is-lit {
  color: #a7f3d0;
  background: color-mix(in srgb, var(--l-application) 18%, transparent);
}

.layers {
  list-style: none;
  margin: 0;
  padding: 1.35rem;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  justify-content: center;
}

.layer {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  padding: 0.6rem 0.7rem;
  border-radius: 9px;
  border: 1px solid transparent;
  opacity: 0.42;
  transition: opacity 0.3s ease, background 0.3s ease, border-color 0.3s ease;
}

.layer.is-lit {
  opacity: 1;
  background: var(--card);
  border-color: var(--border);
}

.layer .tag {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.08em;
  font-weight: 500;
  padding: 0.22rem 0.5rem;
  border-radius: 5px;
  color: var(--text-3);
  border: 1px solid var(--border-2);
  white-space: nowrap;
  min-width: 6.4rem;
  text-align: center;
  transition: color 0.3s ease, background 0.3s ease, border-color 0.3s ease;
}

.layer[data-layer="frame"].is-lit .tag {
  color: #e2e8f0;
  border-color: var(--l-frame);
  background: color-mix(in srgb, var(--l-frame) 18%, transparent);
}

.layer[data-layer="network"].is-lit .tag {
  color: #cffafe;
  border-color: var(--l-network);
  background: color-mix(in srgb, var(--l-network) 20%, transparent);
}

.layer[data-layer="transport"].is-lit .tag {
  color: #e0e7ff;
  border-color: var(--l-transport);
  background: color-mix(in srgb, var(--l-transport) 22%, transparent);
}

.layer[data-layer="application"].is-lit .tag {
  color: #d1fae5;
  border-color: var(--l-application);
  background: color-mix(in srgb, var(--l-application) 22%, transparent);
}

.layer .desc {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-2);
}

.layer.is-lit .desc {
  color: var(--text);
}

.inspector__summary {
  border-top: 1px solid var(--border);
  padding: 1rem 1.35rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.01em;
  color: var(--text);
  background: rgba(0, 0, 0, 0.22);
  min-height: 3.2em;
  display: flex;
  align-items: center;
  word-break: break-word;
}

.inspector__summary .lbl {
  color: var(--cyan);
}

.inspector__summary .amp {
  color: var(--violet);
  font-weight: 500;
}

.inspector__summary .cursor::after {
  content: "▋";
  color: var(--sky);
  margin-left: 1px;
  animation: blink 1s step-end infinite;
}

@keyframes blink {

  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: 0;
  }
}

/* ---------- section shell ---------- */
.block {
  padding-block: clamp(4rem, 9vw, 7rem);
}

/* ---------- pipeline ---------- */
.pipe-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.pipe-step {
  position: relative;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.5rem 1.35rem;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  transition: border-color 0.2s ease, background 0.2s ease, transform 0.2s ease;
}

.pipe-step:hover {
  border-color: var(--border-2);
  background: var(--card-2);
  transform: translateY(-3px);
}

.pipe-step__num {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--bg);
  background: var(--grad);
  width: 2rem;
  height: 2rem;
  border-radius: 8px;
  display: grid;
  place-items: center;
  margin-bottom: 0.4rem;
}

.pipe-step__class {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--cyan);
}

.pipe-step h3 {
  font-family: var(--font-body);
  font-size: 1.05rem;
  font-weight: 600;
}

.pipe-step p {
  color: var(--text-2);
  font-size: 0.92rem;
}

.pipe-step__arrow {
  position: absolute;
  right: -0.85rem;
  top: 2rem;
  z-index: 2;
  color: var(--text-3);
  width: 1.7rem;
  height: 1.7rem;
  display: grid;
  place-items: center;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 50%;
  font-size: 0.8rem;
}

.pipe-step:last-child .pipe-step__arrow {
  display: none;
}

/* ---------- feature grid ---------- */
.feat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.feat {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.6rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  transition: border-color 0.2s ease, background 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.feat:hover {
  border-color: var(--border-2);
  background: var(--card-2);
  transform: translateY(-3px);
  box-shadow: 0 24px 60px -30px rgba(0, 0, 0, 0.7);
}

.feat__icon {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 11px;
  background: linear-gradient(145deg, rgba(45, 212, 238, 0.16), rgba(99, 102, 241, 0.16));
  border: 1px solid var(--border-2);
  color: var(--cyan);
}

.feat__icon svg {
  width: 22px;
  height: 22px;
}

.feat h3 {
  font-family: var(--font-body);
  font-size: 1.075rem;
  font-weight: 600;
}

.feat p {
  color: var(--text-2);
  font-size: 0.94rem;
}

.feat p .mono {
  color: var(--text);
}

/* ---------- screens ---------- */
.screen-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.screen__frame {
  aspect-ratio: 16 / 10;
  background:
    radial-gradient(120% 120% at 50% 0%, rgba(79, 139, 245, 0.1), transparent 60%),
    var(--elev);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  position: relative;
  display: grid;
  place-items: center;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.screen:hover .screen__frame {
  border-color: var(--border-2);
  transform: translateY(-3px);
}

.screen__frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.screen__ph {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-3);
  text-align: center;
  padding: 1rem;
}

.screen__ph b {
  display: block;
  color: var(--text-2);
  margin-bottom: 0.3rem;
}

.screen figure {
  margin: 0;
}

.screen figcaption {
  margin-top: 0.9rem;
}

.screen figcaption .t {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.02rem;
  color: var(--text);
}

.screen figcaption .d {
  display: block;
  color: var(--text-2);
  font-size: 0.9rem;
  margin-top: 0.15rem;
}

/* ---------- quality ---------- */
.quality {
  padding-block: clamp(2.5rem, 5vw, 3.5rem);
}

.quality__inner {
  border: 1px solid var(--border);
  border-radius: 16px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.03), transparent),
    var(--card);
  padding: 1.75rem 2rem;
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.quality__label {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-2);
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.chip {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.35rem 0.75rem;
  background: rgba(0, 0, 0, 0.25);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.chip::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--emerald);
  box-shadow: 0 0 8px rgba(52, 211, 153, 0.7);
}

/* ---------- install ---------- */
.tabs {
  display: inline-flex;
  gap: 0.25rem;
  padding: 0.3rem;
  border: 1px solid var(--border);
  border-radius: 11px;
  background: var(--card);
  margin-bottom: 1.5rem;
}

.tab {
  font-family: var(--font-body);
  font-size: 0.925rem;
  font-weight: 500;
  color: var(--text-2);
  background: none;
  border: none;
  border-radius: 8px;
  padding: 0.55rem 1.1rem;
  cursor: pointer;
  transition: color 0.15s ease, background 0.15s ease;
}

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

.tab[aria-selected="true"] {
  color: var(--text);
  background: var(--card-2);
  box-shadow: inset 0 0 0 1px var(--border-2);
}

.tabpanel[hidden] {
  display: none;
}

.tabpanel__note {
  font-size: 0.94rem;
  color: var(--text-2);
  margin-bottom: 1rem;
}

.codeblock {
  position: relative;
  background: var(--elev);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}

.codeblock__bar {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.7rem 1rem;
  border-bottom: 1px solid var(--border);
  background: rgba(0, 0, 0, 0.25);
}

.codeblock__bar i {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--border-2);
}

.codeblock__bar span {
  margin-left: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-3);
}

.codeblock pre {
  margin: 0;
  padding: 1.3rem;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.86rem;
  line-height: 1.9;
  color: var(--text);
}

.codeblock .cmd-prefix {
  color: var(--cyan);
  user-select: none;
}

.copy-btn {
  position: absolute;
  top: 3.1rem;
  right: 0.7rem;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-2);
  background: color-mix(in srgb, var(--bg) 60%, var(--elev));
  border: 1px solid var(--border-2);
  border-radius: 7px;
  padding: 0.35rem 0.55rem;
  cursor: pointer;
  transition: color 0.15s ease, border-color 0.15s ease;
}

.copy-btn:hover {
  color: var(--text);
  border-color: var(--sky);
}

.copy-btn svg {
  width: 13px;
  height: 13px;
}

.copy-btn.is-done {
  color: var(--emerald);
  border-color: var(--emerald);
}

/* ---------- footer ---------- */
.footer {
  border-top: 1px solid var(--border);
  padding-block: 2.5rem;
  color: var(--text-2);
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.footer__brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  color: var(--text-2);
}

.footer__brand svg {
  width: 22px;
  height: 22px;
  border-radius: 6px;
}

.footer__links {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.footer__links a {
  color: var(--text-2);
  font-size: 0.92rem;
}

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

/* ---------- reveal (pure CSS, always ends visible) ---------- */
.reveal {
  animation: reveal-up 0.7s cubic-bezier(0.22, 0.61, 0.36, 1) both;
}

@keyframes reveal-up {
  from {
    opacity: 0;
    transform: translateY(20px);
  }

  to {
    opacity: 1;
    transform: none;
  }
}

/* ---------- responsive ---------- */
@media (max-width: 900px) {
  .pipe-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .pipe-step:nth-child(2) .pipe-step__arrow {
    display: none;
  }

  .feat-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .screen-grid {
    grid-template-columns: 1fr;
    max-width: 520px;
    margin-inline: auto;
  }
}

@media (max-width: 720px) {
  .inspector__body {
    grid-template-columns: 1fr;
  }

  .inspector__hex {
    border-right: none;
    border-bottom: 1px solid var(--border);
  }

  .hex {
    min-height: 0;
  }
}

@media (max-width: 620px) {
  .nav__links {
    display: none;
  }

  .nav__links.is-open {
    display: flex;
    position: absolute;
    top: calc(100% + 8px);
    right: var(--gutter);
    flex-direction: column;
    align-items: flex-end;
    gap: 1rem;
    background: var(--elev);
    border: 1px solid var(--border-2);
    border-radius: 12px;
    padding: 1.25rem 1.4rem;
    box-shadow: 0 24px 60px -20px rgba(0, 0, 0, 0.8);
  }

  .nav__toggle {
    display: inline-grid;
    place-items: center;
    width: 40px;
    height: 40px;
    background: var(--card);
    border: 1px solid var(--border-2);
    border-radius: 9px;
    color: var(--text);
    cursor: pointer;
  }

  .pipe-grid,
  .feat-grid {
    grid-template-columns: 1fr;
  }

  .pipe-step__arrow {
    display: none !important;
  }

  .layer .tag {
    min-width: 5.6rem;
  }

  .quality__inner {
    padding: 1.35rem;
  }
}

@media (max-width: 380px) {
  body {
    font-size: 1rem;
  }

  .hero__cta .btn {
    width: 100%;
    justify-content: center;
  }

  .tabs {
    width: 100%;
    justify-content: space-between;
  }
}

/* ---------- motion preferences ---------- */
@media (prefers-reduced-motion: reduce) {

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

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

  .inspector__summary .cursor::after {
    content: "";
  }

  .btn:hover,
  .feat:hover,
  .pipe-step:hover {
    transform: none;
  }
}

/* ---------- download picker ---------- */
.dl {
  margin-top: 1.5rem;
}

.dl__bar {
  display: flex;
  align-items: center;
  gap: 1rem 1.25rem;
  flex-wrap: wrap;
  margin-bottom: 1.5rem;
}

.dl__version {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font: 500 0.9rem/1 var(--font-body);
  color: var(--text-2);
}

.dl__version select {
  appearance: none;
  -webkit-appearance: none;
  background: var(--elev)
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M2 4l4 4 4-4' stroke='%239AA4B3' stroke-width='1.4' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E")
    no-repeat right 0.7rem center;
  color: var(--text);
  border: 1px solid var(--border-2);
  border-radius: 9px;
  padding: 0.5rem 2rem 0.5rem 0.8rem;
  font: 600 0.9rem/1 var(--font-mono);
  cursor: pointer;
}

.dl__version select:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.dl__meta {
  font: 500 0.85rem/1.4 var(--font-mono);
  color: var(--text-3);
}

.dl__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

@media (max-width: 760px) {
  .dl__grid {
    grid-template-columns: 1fr;
  }
}

.dl-card {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.85rem;
  padding: 1.35rem 1.35rem 1.45rem;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
}

.dl-card--you {
  border-color: var(--border-2);
  background: var(--card-2);
  box-shadow: 0 0 0 1px var(--glow-cyan), 0 18px 40px -24px var(--glow-indigo);
}

.dl-card__head {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  width: 100%;
}

.dl-card__os {
  font: 600 1.05rem/1 var(--font-display);
  color: var(--text);
}

.dl-card__you {
  margin-left: auto;
  font: 600 0.66rem/1 var(--font-mono);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--cyan);
  background: rgba(45, 212, 238, 0.1);
  border: 1px solid rgba(45, 212, 238, 0.28);
  border-radius: 999px;
  padding: 0.3rem 0.55rem;
}

.dl-card__btn {
  width: 100%;
  justify-content: center;
}

.dl-card__btn svg {
  width: 15px;
  height: 15px;
}

.dl-card__sub {
  font: 500 0.8rem/1.4 var(--font-mono);
  color: var(--text-3);
}

.dl-card__alt {
  font: 500 0.82rem/1 var(--font-body);
  color: var(--text-2);
  border-bottom: 1px solid var(--border-2);
  padding-bottom: 1px;
}

.dl-card__alt:hover {
  color: var(--text);
}

.dl__foot {
  margin-top: 1.4rem;
  font: 500 0.85rem/1.6 var(--font-body);
  color: var(--text-2);
}

.dl__foot a {
  color: var(--text-2);
  border-bottom: 1px solid var(--border-2);
  padding-bottom: 1px;
}

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

.dl__dot {
  margin: 0 0.4rem;
  color: var(--text-3);
}

.dl__fallback {
  grid-column: 1 / -1;
  font: 500 0.95rem/1.6 var(--font-body);
  color: var(--text-2);
}

.dl__fallback a {
  color: var(--cyan);
}