:root {
  color-scheme: dark;
  --ink: #070b0d;
  --panel: #0d1316;
  --panel-2: #11191d;
  --paper: #edf2f1;
  --muted: #94a1a4;
  --line: #273338;
  --line-bright: #46565c;
  --accent: #d6ad74;
  --orange: #f3953d;
  --blue: #7788ff;
  --pink: #ef67b4;
  --measure: min(1240px, calc(100% - 48px));
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 76px; }
body {
  margin: 0;
  min-width: 320px;
  background: var(--ink);
  color: var(--paper);
  font-family: "Segoe UI", Arial, sans-serif;
  line-height: 1.55;
  text-rendering: optimizeLegibility;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: .18;
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(to bottom, black, transparent 82%);
}

a { color: inherit; }
img, video { display: block; max-width: 100%; height: auto; }
figure { margin: 0; }
button, input, select, textarea { font: inherit; }
::selection { background: var(--accent); color: #130d06; }

.shell { width: var(--measure); margin-inline: auto; }
.skip-link { position: fixed; top: 8px; left: 8px; z-index: 100; padding: 10px 14px; background: var(--paper); color: var(--ink); transform: translateY(-150%); }
.skip-link:focus { transform: none; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(7, 11, 13, .94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}

.nav { min-height: 66px; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.brand { display: inline-flex; align-items: center; gap: 11px; text-decoration: none; font-size: 14px; font-weight: 800; letter-spacing: .13em; text-transform: uppercase; }
.brand-mark { width: 18px; height: 18px; display: grid; place-items: center; border: 1px solid var(--accent); color: var(--accent); font: 700 10px/1 ui-monospace, SFMono-Regular, Consolas, monospace; animation: brand-breathe 4.8s ease-in-out infinite; }
.nav-links { display: flex; align-items: center; gap: 24px; color: var(--muted); font-size: 13px; font-weight: 650; }
.nav-links a { text-decoration: none; }
.nav-links a:hover, .nav-links a:focus-visible { color: var(--paper); }

.button {
  position: relative;
  overflow: hidden;
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 0 18px;
  border: 1px solid var(--accent);
  border-radius: 3px;
  background: var(--accent);
  color: #130d06;
  font-size: 14px;
  font-weight: 800;
  text-decoration: none;
  transition: background-color .16s ease, border-color .16s ease, color .16s ease, transform .16s ease;
}
.button::before { content: ""; position: absolute; inset: -40% auto -40% -45%; width: 30%; transform: skewX(-18deg); background: linear-gradient(90deg, transparent, rgba(255,255,255,.28), transparent); transition: left .46s ease; }
.button::after { content: "\2197"; font-size: 15px; }
.button:hover { background: #ebc58e; border-color: #ebc58e; transform: translateY(-1px); }
.button:hover::before { left: 118%; }
.button.secondary { background: transparent; border-color: var(--line-bright); color: var(--paper); }
.button.secondary::after { content: "\2193"; }
.button.secondary:hover { border-color: var(--paper); }
.button.compact { min-height: 38px; padding-inline: 13px; font-size: 12px; }

.hero { position: relative; padding: clamp(122px, 12vw, 166px) 0 52px; }
.hero-grid { display: grid; grid-template-columns: minmax(340px, .82fr) minmax(0, 1.18fr); gap: clamp(46px, 7vw, 96px); align-items: center; }
.hero-grid { position: relative; z-index: 1; }
.tool-network { position: absolute; top: 26px; left: 0; width: 100%; height: 86px; pointer-events: none; color: var(--muted); }
.tool-network svg { position: absolute; inset: 0; width: 100%; height: 82px; overflow: visible; }
.network-base, .network-light { fill: none; vector-effect: non-scaling-stroke; }
.network-base { stroke: #26343a; stroke-width: 1; }
.network-branch { stroke: #1d292e; }
.network-light { stroke: var(--accent); stroke-width: 2; stroke-linecap: round; filter: drop-shadow(0 0 4px rgba(214,173,116,.8)) drop-shadow(0 0 10px rgba(214,173,116,.34)); stroke-dasharray: .075 .925; stroke-dashoffset: 1; animation: network-flow 6.4s linear infinite; }
.network-light-secondary { opacity: .72; animation-duration: 4.9s; animation-delay: -2.2s; }
.network-nodes circle { fill: var(--ink); stroke: #69767a; stroke-width: 1.4; vector-effect: non-scaling-stroke; transform-box: fill-box; transform-origin: center; animation: node-pulse 3.8s ease-in-out infinite; }
.network-nodes circle:nth-child(2) { animation-delay: -.8s; }
.network-nodes circle:nth-child(3) { animation-delay: -1.6s; }
.network-nodes circle:nth-child(4) { animation-delay: -2.4s; }
.network-nodes circle:nth-child(5) { animation-delay: -3.2s; }
.network-label { position: absolute; z-index: 1; top: 59px; color: #778589; font: 650 9px/1 ui-monospace, SFMono-Regular, Consolas, monospace; letter-spacing: .13em; text-transform: uppercase; }
.network-label-idea { left: 0; }
.network-label-build { left: 26.5%; }
.network-label-test { left: 53.5%; }
.network-label-ship { right: 0; }
.kicker, .eyebrow { margin: 0 0 18px; color: var(--accent); font: 700 12px/1.2 ui-monospace, SFMono-Regular, Consolas, monospace; letter-spacing: .14em; text-transform: uppercase; }
.kicker::before, .eyebrow::before { content: "[ "; color: var(--line-bright); }
.kicker::after, .eyebrow::after { content: " ]"; color: var(--line-bright); }
h1, h2, h3, p { margin-top: 0; }
h1 { max-width: 690px; margin-bottom: 22px; font-size: clamp(48px, 6.4vw, 86px); line-height: .94; letter-spacing: -.055em; font-weight: 760; }
.hero-copy { max-width: 610px; margin-bottom: 0; color: #bdc7c9; font-size: clamp(18px, 2vw, 22px); }
.actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 28px; }
.hero-meta { display: grid; grid-template-columns: 1fr 1fr; gap: 0; max-width: 610px; margin-top: 34px; border-block: 1px solid var(--line); }
.meta-item { padding: 13px 14px 13px 0; color: var(--muted); font: 600 12px/1.35 ui-monospace, SFMono-Regular, Consolas, monospace; text-transform: uppercase; }
.meta-item:nth-child(even) { padding-left: 16px; border-left: 1px solid var(--line); }
.meta-item strong { display: block; color: var(--paper); font-size: 13px; }

.hero-visual { position: relative; padding: 12px; border: 1px solid var(--line-bright); background: #090e10; animation: interface-float 8s ease-in-out infinite; transition: border-color .25s ease, box-shadow .25s ease; }
.hero-visual:hover { border-color: #77664f; box-shadow: 0 18px 70px rgba(0,0,0,.34), 0 0 34px rgba(214,173,116,.08); }
.hero-visual::before { content: "LIVE INTERFACE / PARALLEL"; position: absolute; top: -29px; left: -1px; color: var(--muted); font: 600 10px/1 ui-monospace, SFMono-Regular, Consolas, monospace; letter-spacing: .1em; }
.hero-visual::after { content: "01"; position: absolute; right: -1px; bottom: -31px; color: var(--line-bright); font: 700 11px/1 ui-monospace, SFMono-Regular, Consolas, monospace; }
.hero-visual img { width: 100%; }

.signal-index { margin-top: 62px; border-block: 1px solid var(--line); }
.signal-index .shell { display: grid; grid-template-columns: 150px repeat(4, 1fr); }
.index-label, .index-item { min-height: 68px; display: flex; align-items: center; padding: 0 18px; border-right: 1px solid var(--line); }
.index-label { padding-left: 0; color: var(--muted); font: 650 11px/1.2 ui-monospace, SFMono-Regular, Consolas, monospace; text-transform: uppercase; }
.index-item { gap: 10px; color: #c5ced0; font-size: 13px; }
.index-item:last-child { border-right: 0; }
.signal-dot { width: 8px; height: 8px; border-radius: 50%; border: 1px solid currentColor; animation: signal-dot-pulse 3.2s ease-in-out infinite; }
.index-item:nth-child(3) .signal-dot { animation-delay: -.8s; }
.index-item:nth-child(4) .signal-dot { animation-delay: -1.6s; }
.index-item:nth-child(5) .signal-dot { animation-delay: -2.4s; }
.signal-dot.dry { color: #9ca9ac; }
.signal-dot.parallel { color: var(--pink); }
.signal-dot.delay { color: var(--orange); }
.signal-dot.reverb { color: var(--blue); }

section { padding: clamp(72px, 9vw, 116px) 0; border-top: 1px solid var(--line); }
.section-grid { display: grid; grid-template-columns: minmax(220px, .34fr) minmax(0, 1fr); gap: clamp(36px, 7vw, 96px); }
.section-heading { max-width: 760px; }
.section-heading.sticky { align-self: start; position: sticky; top: 104px; }
.section-heading p { margin-bottom: 0; color: var(--muted); font-size: 17px; }
h2 { margin-bottom: 16px; font-size: clamp(37px, 5vw, 62px); line-height: .98; letter-spacing: -.045em; font-weight: 720; }
h3 { line-height: 1.15; }

.media-frame { padding: 9px; border: 1px solid var(--line-bright); background: #090e10; }
.media-frame video { width: 100%; aspect-ratio: 16/9; background: #020405; }
.media-caption { display: flex; justify-content: space-between; gap: 20px; margin-top: 12px; color: var(--muted); font: 600 11px/1.4 ui-monospace, SFMono-Regular, Consolas, monospace; text-transform: uppercase; }

.routes { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.route-card { position: relative; padding: 18px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); background: rgba(13,19,22,.66); transition: background-color .24s ease, transform .24s ease, box-shadow .24s ease; }
.route-card:hover { z-index: 2; background: var(--panel-2); transform: translateY(-3px); box-shadow: 0 18px 42px rgba(0,0,0,.28); }
.route-card img { width: 100%; border: 1px solid #1d292e; transition: border-color .24s ease, filter .24s ease; }
.route-card:hover img { border-color: #48575c; filter: saturate(1.08) brightness(1.04); }
.route-head { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; margin-top: 16px; }
.route-head h3 { margin-bottom: 0; font-size: 21px; }
.route-number { color: var(--muted); font: 600 11px/1 ui-monospace, SFMono-Regular, Consolas, monospace; }
.route-card p { margin: 8px 0 0; color: var(--muted); font-size: 14px; }
.route-card[data-accent="parallel"] .route-number { color: var(--pink); }
.route-card[data-accent="delay"] .route-number { color: var(--orange); }
.route-card[data-accent="reverb"] .route-number { color: var(--blue); }

.listen-console { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); border-top: 1px solid var(--line); border-left: 1px solid var(--line); background: var(--panel); }
.listen-row { min-width: 0; display: flex; flex-direction: column; gap: 15px; padding: 22px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); background: radial-gradient(circle at 50% 42%, rgba(255,255,255,.025), transparent 52%), rgba(13,19,22,.82); transition: background-color .24s ease, box-shadow .24s ease, transform .24s ease; }
.listen-row:hover { z-index: 1; background-color: var(--panel-2); box-shadow: 0 18px 48px rgba(0,0,0,.26); transform: translateY(-2px); }
.listen-card-head { display: flex; align-items: end; justify-content: space-between; gap: 18px; }
.listen-number { color: var(--line-bright); font: 700 10px/1 ui-monospace, SFMono-Regular, Consolas, monospace; letter-spacing: .08em; }
.listen-title { text-align: right; }
.listen-title strong { display: block; font-size: 18px; }
.listen-title span { color: var(--muted); font: 600 9px/1.3 ui-monospace, SFMono-Regular, Consolas, monospace; letter-spacing: .07em; text-transform: uppercase; }
.listen-row p { min-height: 40px; margin: 0; color: var(--muted); font-size: 13px; }
.topology-map { width: 100%; height: auto; overflow: visible; border-block: 1px solid #1a2529; background: linear-gradient(90deg, transparent, rgba(255,255,255,.015), transparent); }
.topology-base, .topology-flow { fill: none; vector-effect: non-scaling-stroke; }
.topology-base { stroke: #354247; stroke-width: 2; }
.topology-flow { stroke-width: 2.4; stroke-linecap: round; stroke-dasharray: .065 .935; stroke-dashoffset: 1; animation: topology-flow 4.8s linear infinite; }
.topology-flow.flow-dry { stroke: #a3afb1; filter: drop-shadow(0 0 4px rgba(190,205,208,.72)); }
.topology-flow.flow-delay { stroke: var(--orange); filter: drop-shadow(0 0 4px rgba(243,149,61,.78)); }
.topology-flow.flow-reverb { stroke: var(--blue); filter: drop-shadow(0 0 4px rgba(119,136,255,.82)); animation-delay: -1.6s; }
.topology-node rect { fill: rgba(15,22,25,.9); stroke: #536167; stroke-width: 1; vector-effect: non-scaling-stroke; }
.topology-node text { fill: #c9d1d2; font: 700 9px/1 ui-monospace, SFMono-Regular, Consolas, monospace; letter-spacing: .08em; text-anchor: middle; dominant-baseline: middle; }
.topology-node.node-dry rect { stroke: #859195; filter: drop-shadow(0 0 5px rgba(163,175,177,.2)); }
.topology-node.node-delay rect { stroke: var(--orange); filter: drop-shadow(0 0 5px rgba(243,149,61,.3)); }
.topology-node.node-delay text { fill: #ffc07f; }
.topology-node.node-reverb rect { stroke: var(--blue); filter: drop-shadow(0 0 5px rgba(119,136,255,.32)); }
.topology-node.node-reverb text { fill: #aeb8ff; }
.topology-node.node-combined rect { stroke: var(--pink); filter: drop-shadow(0 0 6px rgba(239,103,180,.38)); }
.topology-node.node-combined text { fill: #ffadd9; }
audio { width: 100%; height: 38px; accent-color: var(--accent); }
.listen-note { margin: 14px 0 0; color: var(--muted); font-size: 12px; }

.spec-list { border-top: 1px solid var(--line-bright); }
.spec-row { display: grid; grid-template-columns: 54px minmax(190px, .62fr) minmax(0, 1fr); gap: 22px; padding: 23px 0; border-bottom: 1px solid var(--line); }
.spec-number { color: var(--accent); font: 700 11px/1.5 ui-monospace, SFMono-Regular, Consolas, monospace; }
.spec-row h3 { margin: 0; font-size: 19px; }
.spec-row p { margin: 0; color: var(--muted); font-size: 14px; }

.split-media { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(300px, .9fr); gap: clamp(34px, 6vw, 76px); align-items: center; }
.split-media.reverse { grid-template-columns: minmax(300px, .8fr) minmax(0, 1.2fr); }
.copy-panel p { color: var(--muted); font-size: 17px; }
.copy-panel h2 { font-size: clamp(38px, 5vw, 58px); }
.copy-panel .actions { justify-content: flex-start; }
.review-video { position: relative; aspect-ratio: 16/9; background: #020405; }
.review-video iframe { width: 100%; height: 100%; border: 0; }

.guide-links { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.guide-card { min-height: 250px; display: flex; flex-direction: column; padding: 24px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); text-decoration: none; background: rgba(13,19,22,.72); }
.guide-card:hover { background: var(--panel-2); }
.guide-card small { color: var(--accent); font: 650 10px/1 ui-monospace, SFMono-Regular, Consolas, monospace; letter-spacing: .1em; text-transform: uppercase; }
.guide-card h3 { margin: auto 0 12px; font-size: 25px; letter-spacing: -.025em; }
.guide-card p { margin: 0; color: var(--muted); font-size: 14px; }
.guide-card span { margin-top: 20px; color: var(--paper); font-size: 13px; font-weight: 700; }

.support-block { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(280px, .5fr); border: 1px solid var(--line-bright); background: var(--panel); }
.support-copy { padding: clamp(28px, 5vw, 54px); border-right: 1px solid var(--line); }
.support-copy p { max-width: 790px; margin-bottom: 0; color: var(--muted); font-size: 16px; }
.support-offer { display: flex; flex-direction: column; justify-content: space-between; padding: 32px; }
.support-price { display: block; color: var(--accent); font-size: 34px; font-weight: 760; letter-spacing: -.04em; }
.support-offer p { color: var(--muted); font-size: 13px; }

.final-cta { text-align: left; }
.final-grid { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 40px; align-items: end; }
.final-cta h2 { max-width: 850px; margin-bottom: 12px; }
.final-cta p { max-width: 650px; margin: 0; color: var(--muted); font-size: 17px; }

footer { padding: 30px 0 42px; border-top: 1px solid var(--line); color: var(--muted); font-size: 12px; }
.footer-row { display: flex; justify-content: space-between; gap: 24px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 18px; }
.footer-links a { text-decoration: none; }
.footer-links a:hover { color: var(--paper); }

/* Editorial guide pages */
.guide-hero { padding: clamp(70px, 9vw, 120px) 0 54px; border-bottom: 1px solid var(--line); }
.breadcrumbs { margin-bottom: 36px; color: var(--muted); font: 600 11px/1.4 ui-monospace, SFMono-Regular, Consolas, monospace; text-transform: uppercase; }
.breadcrumbs a { text-decoration: none; }
.guide-hero h1 { max-width: 970px; }
.guide-deck { max-width: 760px; margin-bottom: 0; color: #bdc7c9; font-size: clamp(19px, 2.3vw, 25px); }
.guide-meta { display: flex; flex-wrap: wrap; gap: 18px; margin-top: 30px; color: var(--muted); font: 600 11px/1.4 ui-monospace, SFMono-Regular, Consolas, monospace; text-transform: uppercase; }
.article-layout { display: grid; grid-template-columns: minmax(190px, .28fr) minmax(0, .72fr); gap: clamp(36px, 8vw, 110px); padding: 76px 0 110px; }
.article-nav { align-self: start; position: sticky; top: 104px; border-top: 1px solid var(--line-bright); }
.article-nav a { display: block; padding: 12px 0; border-bottom: 1px solid var(--line); color: var(--muted); font-size: 12px; text-decoration: none; }
.article-nav a:hover { color: var(--paper); }
.article { max-width: 800px; }
.article h2 { margin-top: 72px; font-size: clamp(32px, 4vw, 48px); }
.article h2:first-child { margin-top: 0; }
.article h3 { margin-top: 36px; font-size: 23px; }
.article p, .article li { color: #b4bfc1; font-size: 17px; }
.article li + li { margin-top: 9px; }
.article strong { color: var(--paper); }
.article-callout { margin: 34px 0; padding: 22px 24px; border-left: 3px solid var(--accent); background: var(--panel); }
.article-callout p { margin: 0; }
.route-diagram { display: grid; grid-template-columns: repeat(3, 1fr); align-items: center; gap: 12px; margin: 34px 0; padding: 24px; border: 1px solid var(--line); background: var(--panel); text-align: center; }
.route-node { padding: 12px; border: 1px solid var(--line-bright); font: 700 12px/1.3 ui-monospace, SFMono-Regular, Consolas, monospace; text-transform: uppercase; }
.route-arrow { color: var(--muted); }
.related-guides { border-top: 1px solid var(--line); }

@keyframes network-flow {
  to { stroke-dashoffset: -1; }
}

@keyframes topology-flow {
  to { stroke-dashoffset: -1; }
}

@keyframes node-pulse {
  0%, 72%, 100% { fill: var(--ink); stroke: #69767a; transform: scale(1); filter: none; }
  80% { fill: var(--accent); stroke: #f3d8b0; transform: scale(1.42); filter: drop-shadow(0 0 5px rgba(214,173,116,.9)); }
}

@keyframes signal-dot-pulse {
  0%, 66%, 100% { box-shadow: 0 0 0 0 transparent; opacity: .72; }
  78% { box-shadow: 0 0 5px currentColor, 0 0 13px currentColor; opacity: 1; }
}

@keyframes brand-breathe {
  0%, 100% { box-shadow: 0 0 0 rgba(214,173,116,0); }
  50% { box-shadow: 0 0 10px rgba(214,173,116,.26); }
}

@keyframes interface-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-4px); }
}

@media (max-width: 980px) {
  .hero-grid, .section-grid, .split-media, .split-media.reverse { grid-template-columns: 1fr; }
  .hero-visual { margin-top: 34px; }
  .section-heading.sticky { position: static; }
  .signal-index .shell { grid-template-columns: repeat(4, 1fr); }
  .index-label { display: none; }
  .guide-links { grid-template-columns: 1fr; }
  .guide-card { min-height: 190px; }
  .support-block { grid-template-columns: 1fr; }
  .support-copy { border-right: 0; border-bottom: 1px solid var(--line); }
  .article-layout { grid-template-columns: 1fr; }
  .article-nav { display: none; }
}

@media (max-width: 720px) {
  :root { --measure: min(100% - 28px, 1240px); }
  .nav { min-height: 60px; }
  .nav-links a:not(.button) { display: none; }
  .hero { padding-top: 122px; }
  .tool-network { top: 24px; }
  .network-label { font-size: 8px; letter-spacing: .08em; }
  .network-label-build { left: 24%; }
  .network-label-test { left: 53%; }
  h1 { font-size: clamp(44px, 15vw, 66px); }
  .hero-meta { grid-template-columns: 1fr; }
  .meta-item:nth-child(even) { padding-left: 0; border-left: 0; }
  .meta-item + .meta-item { border-top: 1px solid var(--line); }
  .signal-index .shell { grid-template-columns: repeat(2, 1fr); }
  .index-item:nth-child(2n) { border-right: 0; }
  .index-item:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .routes { grid-template-columns: 1fr; }
  .listen-console { grid-template-columns: 1fr; }
  .listen-row { padding: 18px 14px; }
  .spec-row { grid-template-columns: 36px 1fr; gap: 12px; }
  .spec-row p { grid-column: 2; }
  .final-grid { grid-template-columns: 1fr; align-items: start; }
  .footer-row { flex-direction: column; }
  .route-diagram { grid-template-columns: 1fr; }
  .route-arrow { transform: rotate(90deg); }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition-duration: .01ms !important; }
}