:root {
  --bg: #070b0b;
  --bg-2: #0b1212;
  --surface: #0f1817;
  --surface-2: #142120;
  --line: rgba(190, 255, 235, 0.09);
  --line-2: rgba(190, 255, 235, 0.16);
  --text: #e8f1ee;
  --muted: #8b9c98;
  --dim: #5d6d69;
  --accent: #7cf5c8;
  --accent-2: #63c7ff;
  --warn: #ffb547;
  --err: #ff6166;
  --radius: 18px;
  --wrap: 1200px;
  --font: "Geist", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "Geist Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  --ease: cubic-bezier(.2, .7, .1, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img, svg, canvas { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
h1, h2, h3 { margin: 0; font-weight: 400; }
p { margin: 0; }
::selection { background: var(--accent); color: var(--bg); }

.mono { font-family: var(--mono); letter-spacing: 0.02em; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
.skip { position: absolute; left: -999px; top: 8px; z-index: 100; background: var(--accent); color: var(--bg); padding: 8px 12px; border-radius: 8px; }
.skip:focus { left: 8px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 6px; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }

/* ---------- Earmarks / small labels ---------- */
.earmark {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--muted);
}
.dot { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); display: inline-block; flex: none; }
.dot--live { box-shadow: 0 0 0 0 rgba(124, 245, 200, .6); animation: pulse 2s infinite; }
.dot--warn { background: var(--warn); }
@keyframes pulse { 0% { box-shadow: 0 0 0 0 rgba(124,245,200,.55);} 70% { box-shadow: 0 0 0 10px rgba(124,245,200,0);} 100% { box-shadow: 0 0 0 0 rgba(124,245,200,0);} }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  height: 44px; padding: 0 20px; border-radius: 999px;
  font: 500 14px/1 var(--font); border: 1px solid transparent; cursor: pointer;
  transition: transform .25s var(--ease), background .25s, border-color .25s, color .25s;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); }
.btn--accent { background: var(--accent); color: #04120d; }
.btn--accent:hover { background: #a2ffdc; }
.btn--light { background: var(--text); color: var(--bg); height: 36px; padding: 0 16px; font-size: 13px; }
.btn--ghost { border-color: var(--line-2); color: var(--text); background: rgba(255,255,255,.02); backdrop-filter: blur(8px); }
.btn--ghost:hover { border-color: var(--accent); }

/* ---------- Nav ---------- */
.nav {
  position: fixed; top: 14px; left: 50%; z-index: 50;
  width: min(calc(100% - 28px), var(--wrap));
  transform: translateX(-50%);
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
  height: 58px; padding: 0 10px 0 18px;
  border-radius: 14px; border: 1px solid var(--line);
  background: rgba(10, 16, 16, .62);
  backdrop-filter: blur(18px) saturate(140%); -webkit-backdrop-filter: blur(18px) saturate(140%);
  transition: transform .45s var(--ease), background .3s;
}
.nav.is-hidden { transform: translate(-50%, -120%); }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 500; letter-spacing: -0.01em; font-size: 17px; }
.brand__mark { width: 26px; height: 26px; color: var(--text); }
.brand__mark circle:first-child { transform-origin: 16px 16px; animation: spin 14s linear infinite; }
.brand__core { fill: var(--accent); }
@keyframes spin { to { transform: rotate(320deg); } }
.nav__links { display: flex; gap: 4px; }
.nav__links a { font-size: 14px; color: var(--muted); padding: 8px 12px; border-radius: 8px; transition: color .2s, background .2s; }
.nav__links a:hover, .nav__links a.is-active { color: var(--text); background: rgba(255,255,255,.04); }
.nav__burger { display: none; width: 40px; height: 40px; border: 1px solid var(--line-2); border-radius: 10px; background: none; cursor: pointer; position: relative; }
.nav__burger span { position: absolute; left: 11px; right: 11px; height: 1.5px; background: var(--text); transition: transform .3s var(--ease), top .3s; }
.nav__burger span:first-child { top: 15px; } .nav__burger span:last-child { top: 23px; }
.nav.is-open .nav__burger span:first-child { top: 19px; transform: rotate(45deg); }
.nav.is-open .nav__burger span:last-child { top: 19px; transform: rotate(-45deg); }

/* ---------- Hero ---------- */
.hero { padding: 86px 14px 0; }
.hero__frame {
  position: relative; overflow: hidden;
  min-height: calc(100svh - 150px); max-height: 900px;
  border-radius: 22px; border: 1px solid var(--line);
  background: radial-gradient(120% 90% at 75% 20%, #10302a 0%, #0a1514 45%, var(--bg) 100%);
  display: grid; align-items: end;
  padding: clamp(28px, 5vw, 64px);
}
.hero__canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
.hero__grid {
  position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 25% 33.33%;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,.9), rgba(0,0,0,.15));
  -webkit-mask-image: linear-gradient(to bottom, rgba(0,0,0,.9), rgba(0,0,0,.15));
}
.hero__frame::before {
  content: ""; position: absolute; inset: 0; z-index: 1; pointer-events: none;
  background: radial-gradient(70% 60% at 15% 85%, rgba(7,11,11,.82), transparent 70%);
}
.hero__frame::after {
  content: ""; position: absolute; left: 0; right: 0; height: 30%; top: -30%;
  background: linear-gradient(to bottom, transparent, rgba(124,245,200,.05), transparent);
  animation: scan 7s linear infinite; pointer-events: none;
}
@keyframes scan { to { top: 100%; } }
.hero__content { position: relative; max-width: 940px; display: grid; gap: 22px; z-index: 2; }
.hero__title {
  font-size: clamp(44px, 7.4vw, 104px); line-height: .96; letter-spacing: -0.045em; font-weight: 400;
}
.grad {
  background: linear-gradient(100deg, var(--accent) 0%, #c9fff0 45%, var(--accent-2) 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero__lead { font-size: clamp(16px, 1.4vw, 19px); color: #b8c7c3; max-width: 560px; font-weight: 300; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 6px; }

.readout {
  position: absolute; z-index: 2; top: clamp(90px, 12vh, 140px); right: clamp(20px, 4vw, 56px);
  width: 290px; padding: 16px; border-radius: 16px;
  background: rgba(9, 17, 16, .66); border: 1px solid var(--line-2);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 30px 80px -30px rgba(0,0,0,.8);
}
.readout__head { display: flex; justify-content: space-between; align-items: center; font-size: 10.5px; color: var(--muted); margin-bottom: 10px; }
.readout__row { display: flex; justify-content: space-between; align-items: baseline; padding: 9px 0; border-top: 1px solid var(--line); font-size: 13px; color: var(--muted); }
.readout__row b { color: var(--text); font-size: 15px; font-weight: 500; }
.readout__spark { height: 46px; margin: 8px 0 6px; }
.readout__spark canvas { width: 100%; height: 100%; }
.readout__foot { display: flex; justify-content: space-between; font-size: 10.5px; color: var(--muted); }
.pill { font-family: var(--mono); font-size: 10.5px; padding: 4px 9px; border-radius: 999px; letter-spacing: .04em; transition: background .3s, color .3s; }
.pill--ok { background: rgba(124,245,200,.12); color: var(--accent); }
.pill--warn { background: rgba(255,181,71,.14); color: var(--warn); }
.pill--err { background: rgba(255,97,102,.14); color: var(--err); }

.ticker { overflow: hidden; border-bottom: 1px solid var(--line); margin-top: 14px; padding: 18px 0; mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent); -webkit-mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent); }
.ticker__track { display: flex; gap: 28px; width: max-content; animation: ticker 40s linear infinite; font-family: var(--mono); font-size: 12px; text-transform: uppercase; letter-spacing: .14em; color: var(--muted); }
.ticker__track i { color: var(--accent); font-style: normal; font-size: 8px; align-self: center; }
@keyframes ticker { to { transform: translateX(-50%); } }

/* ---------- Sections ---------- */
.section { padding: clamp(90px, 12vw, 160px) 0; position: relative; }
.section--alt { background: linear-gradient(to bottom, var(--bg), var(--bg-2) 20%, var(--bg-2) 80%, var(--bg)); }
.h2 { font-size: clamp(32px, 4.6vw, 62px); line-height: 1.04; letter-spacing: -0.035em; max-width: 980px; margin-top: 22px; }
.h2 em { font-style: normal; color: var(--accent); }
.lead { color: var(--muted); font-size: 18px; font-weight: 300; max-width: 520px; margin-top: 22px; }
.note { margin-top: 18px; font-size: 12px; color: var(--dim); font-family: var(--mono); }

/* Problem cards */
.cards3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; margin-top: 70px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.card { background: var(--bg); padding: 34px 30px 38px; min-height: 280px; display: flex; flex-direction: column; transition: background .4s; position: relative; }
.card:hover { background: var(--surface); }
.card__idx { font-size: 12px; color: var(--accent); border: 1px solid var(--line-2); width: 30px; height: 30px; border-radius: 8px; display: grid; place-items: center; margin-bottom: auto; }
.card h3 { font-size: 24px; letter-spacing: -0.02em; margin: 60px 0 12px; }
.card p { color: var(--muted); font-size: 15px; }

/* Method */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(40px, 7vw, 110px); align-items: start; }
.split__sticky { position: sticky; top: 110px; }
.diagram { margin-top: 44px; border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; background: rgba(255,255,255,.015); }
.d-box { fill: var(--surface); stroke: var(--line-2); }
.d-box--accent { stroke: rgba(124,245,200,.45); }
.d-lbl { font: 500 10px var(--mono); letter-spacing: .14em; fill: var(--muted); }
.d-sub { font: 12px var(--font); fill: var(--text); }
.d-ok { font: 11px var(--mono); fill: var(--accent); }
.d-probe { fill: rgba(124,245,200,.08); stroke: var(--accent); stroke-width: 1.2; }
.d-core { fill: var(--accent); }
.d-wire { stroke: var(--line-2); stroke-width: 1.5; fill: none; }
.d-pulse { stroke-width: 2.5; fill: none; stroke-dasharray: 40 400; animation: dash 2.4s linear infinite; }
@keyframes dash { from { stroke-dashoffset: 40; } to { stroke-dashoffset: -400; } }

.steps { list-style: none; margin: 0; padding: 0; }
.step { display: grid; grid-template-columns: 56px 1fr; gap: 10px; padding: 40px 0; border-top: 1px solid var(--line); }
.step:last-child { border-bottom: 1px solid var(--line); }
.step__n { color: var(--accent); font-size: 13px; padding-top: 6px; }
.step h3 { font-size: 26px; letter-spacing: -0.02em; margin-bottom: 10px; }
.step p { color: var(--muted); }

/* Demo */
.demo__intro { display: grid; grid-template-columns: 1.3fr 1fr; gap: 40px; align-items: end; }
.demo {
  margin-top: 56px; display: grid; grid-template-columns: 260px 1fr 300px; gap: 1px;
  background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden;
}
.demo > * { background: var(--bg); }
.demo__controls { display: flex; flex-direction: column; padding: 10px; gap: 4px; }
.scn {
  text-align: left; display: flex; gap: 12px; align-items: flex-start;
  background: none; border: 1px solid transparent; color: var(--muted);
  font: 14px/1.35 var(--font); padding: 13px 12px; border-radius: 10px; cursor: pointer;
  transition: background .2s, color .2s, border-color .2s;
}
.scn:hover { color: var(--text); background: rgba(255,255,255,.03); }
.scn.is-active { color: var(--text); background: var(--surface); border-color: var(--line-2); }
.scn__k { font-size: 11px; color: var(--dim); padding-top: 2px; }
.scn.is-active .scn__k { color: var(--accent); }

.demo__screen { padding: 20px; display: flex; flex-direction: column; min-width: 0; }
.demo__chartHead { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; font-size: 11px; color: var(--muted); }
.legend { display: flex; gap: 16px; flex-wrap: wrap; font-size: 12px; }
.legend span { display: inline-flex; align-items: center; gap: 7px; }
.lg { width: 16px; height: 2px; display: inline-block; border-radius: 2px; }
.lg--inc { background: repeating-linear-gradient(90deg, var(--text) 0 4px, transparent 4px 7px); }
.lg--a { background: var(--accent); }
.lg--b { background: var(--accent-2); }
#demoChart { width: 100%; height: 300px; margin-top: 12px; }
.demo__channels { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-top: 14px; }
.ch { border: 1px solid var(--line); border-radius: 12px; padding: 12px 14px; display: grid; grid-template-columns: 1fr auto; gap: 2px 8px; font-size: 12px; color: var(--muted); transition: border-color .3s; }
.ch b { grid-column: 1; color: var(--text); font-size: 17px; font-weight: 500; }
.ch .dot { grid-row: 1; grid-column: 2; align-self: center; transition: background .3s; }
.ch.is-warn { border-color: rgba(255,181,71,.4); } .ch.is-warn .dot { background: var(--warn); }
.ch.is-err { border-color: rgba(255,97,102,.45); } .ch.is-err .dot { background: var(--err); }

.verdict { padding: 24px; display: flex; flex-direction: column; gap: 16px; }
.verdict__who { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.who { border: 1px solid var(--line); border-radius: 12px; padding: 12px; display: grid; gap: 4px; font-size: 12px; color: var(--muted); transition: border-color .3s, background .3s; }
.who b { font-family: var(--mono); font-weight: 500; font-size: 13px; color: var(--accent); transition: color .3s; }
.who.is-warn { border-color: rgba(255,181,71,.4); background: rgba(255,181,71,.05); } .who.is-warn b { color: var(--warn); }
.who.is-err { border-color: rgba(255,97,102,.45); background: rgba(255,97,102,.06); } .who.is-err b { color: var(--err); }
.verdict__title { font-size: 24px; letter-spacing: -0.02em; line-height: 1.15; }
.verdict__text { color: var(--muted); font-size: 14.5px; min-height: 90px; }
.conf { margin-top: auto; display: grid; gap: 8px; font-size: 11px; color: var(--muted); }
.conf__bar { height: 4px; border-radius: 4px; background: var(--surface-2); overflow: hidden; }
.conf__bar span { display: block; height: 100%; width: 98%; background: var(--accent); border-radius: 4px; transition: width .6s var(--ease), background .3s; }

/* Tech bento */
.bento { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 64px; }
.tile {
  position: relative; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius);
  background: linear-gradient(160deg, var(--surface) 0%, var(--bg) 70%);
  padding: 28px; min-height: 250px; display: flex; flex-direction: column; gap: 10px;
  transition: border-color .3s, transform .4s var(--ease);
}
.tile:hover { border-color: var(--line-2); transform: translateY(-3px); }
.tile--wide { grid-column: span 2; }
.tile--full { grid-column: 1 / -1; min-height: 0; }
.tile--full h3 { margin-top: 24px; }
.tile__tag { font-size: 10.5px; letter-spacing: .14em; color: var(--accent); margin-bottom: auto; }
.tile h3 { font-size: 22px; letter-spacing: -0.02em; margin-top: 50px; }
.tile p { color: var(--muted); font-size: 15px; max-width: 440px; }
.chip { position: absolute; right: 30px; top: 30px; width: 120px; height: 120px; border-radius: 16px; border: 1px solid var(--line-2); display: grid; place-items: center;
  background:
    repeating-linear-gradient(90deg, transparent 0 14px, var(--line-2) 14px 15px) top / 100% 10px no-repeat,
    repeating-linear-gradient(90deg, transparent 0 14px, var(--line-2) 14px 15px) bottom / 100% 10px no-repeat,
    var(--surface);
}
.chip__die { width: 64px; height: 64px; border-radius: 10px; border: 1px solid rgba(124,245,200,.5); display: grid; place-items: center; color: var(--accent); box-shadow: 0 0 40px rgba(124,245,200,.18), inset 0 0 20px rgba(124,245,200,.08); animation: glow 3s ease-in-out infinite alternate; }
@keyframes glow { to { box-shadow: 0 0 70px rgba(124,245,200,.32), inset 0 0 26px rgba(124,245,200,.14); } }
.toast { position: absolute; right: 26px; top: 26px; max-width: 330px; display: flex; gap: 12px; align-items: flex-start; padding: 14px 16px; border-radius: 14px; background: rgba(20,33,32,.9); border: 1px solid rgba(255,181,71,.3); font-size: 13px; box-shadow: 0 20px 50px -20px rgba(0,0,0,.8); animation: float 5s ease-in-out infinite; }
.toast .dot { margin-top: 6px; }
.toast b { display: block; font-weight: 500; margin-bottom: 2px; }
.toast span:not(.dot) { color: var(--muted); }
@keyframes float { 50% { transform: translateY(-6px); } }

/* Roadmap */
.road { list-style: none; padding: 0; margin: 64px 0 0; display: grid; grid-template-columns: repeat(3, 1fr); position: relative; }
.road::before { content: ""; position: absolute; left: 0; right: 0; top: 7px; height: 1px; background: var(--line-2); }
.road__item { position: relative; padding: 38px 28px 0 0; }
.road__item::before { content: ""; position: absolute; top: 2px; left: 0; width: 11px; height: 11px; border-radius: 50%; background: var(--bg); border: 1px solid var(--line-2); }
.road__item.is-now::before { background: var(--accent); border-color: var(--accent); box-shadow: 0 0 0 6px rgba(124,245,200,.12); }
.road__when { font-size: 11px; text-transform: uppercase; letter-spacing: .14em; color: var(--muted); }
.is-now .road__when { color: var(--accent); }
.road__item h3 { font-size: 22px; letter-spacing: -0.02em; margin: 12px 0 8px; }
.road__item p { color: var(--muted); font-size: 15px; }

.cta {
  position: relative; overflow: hidden; margin-top: 110px;
  border: 1px solid var(--line-2); border-radius: 24px;
  padding: clamp(32px, 5vw, 64px);
  display: grid; grid-template-columns: 1.2fr 1fr; gap: 40px; align-items: center;
  background: var(--surface);
}
.cta__glow { position: absolute; width: 600px; height: 600px; right: -200px; top: -300px; background: radial-gradient(circle, rgba(124,245,200,.22), transparent 60%); pointer-events: none; }
.cta__title { font-size: clamp(28px, 3.4vw, 44px); letter-spacing: -0.03em; line-height: 1.08; margin-bottom: 14px; }
.cta p { color: var(--muted); }
.cta__form { position: relative; display: flex; gap: 8px; flex-wrap: wrap; }
.cta__form input {
  flex: 1 1 220px; height: 48px; padding: 0 18px; border-radius: 999px;
  background: var(--bg); border: 1px solid var(--line-2); color: var(--text); font: 15px var(--font);
}
.cta__form input:focus { outline: none; border-color: var(--accent); }
.cta__form .btn { height: 48px; }
.cta__msg { width: 100%; font-size: 12px; color: var(--accent); min-height: 18px; padding-left: 18px; }

/* Footer */
.footer { border-top: 1px solid var(--line); padding: 36px 0; }
.footer__inner { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; }
.footer__meta { font-size: 12px; color: var(--dim); }

/* Reveal */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity .9s var(--ease), transform .9s var(--ease); transition-delay: var(--d, 0s); }
.reveal.is-in { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 1080px) {
  .demo { grid-template-columns: 1fr 1fr; }
  .demo__controls { grid-column: 1 / -1; flex-direction: row; overflow-x: auto; }
  .scn { flex: none; }
  .readout { display: none; }
}
@media (max-width: 860px) {
  .nav__links, .nav__cta { display: none; }
  .nav__burger { display: block; }
  .nav.is-open { height: auto; flex-wrap: wrap; padding-bottom: 14px; background: rgba(10,16,16,.95); }
  .nav.is-open .nav__links { display: flex; flex-direction: column; width: 100%; order: 3; }
  .nav.is-open .nav__links a { font-size: 17px; padding: 12px; }
  .cards3, .bento, .road { grid-template-columns: 1fr; }
  .tile--wide, .tile--full { grid-column: auto; }
  .chip, .toast { position: relative; right: auto; top: auto; margin-bottom: 10px; }
  .chip { order: -1; width: 90px; height: 90px; } .chip__die { width: 48px; height: 48px; }
  .split, .demo__intro, .cta { grid-template-columns: 1fr; }
  .split__sticky { position: static; }
  .demo { grid-template-columns: 1fr; }
  .road { gap: 34px; } .road::before { display: none; }
  .card { min-height: 0; } .card h3 { margin-top: 36px; }
  .tile { min-height: 0; }
  .tile h3 { margin-top: 20px; }
}
@media (max-width: 520px) {
  .wrap { padding: 0 16px; }
  .hero { padding: 80px 8px 0; }
  .hero__frame { min-height: 600px; padding: 24px 20px 28px; }
  .demo__channels { grid-template-columns: 1fr; }
  #demoChart { height: 220px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
  html { scroll-behavior: auto; }
}

/* ---------- Hardware: interactive ESP32-S3 ---------- */
.hw { overflow: hidden; isolation: isolate; }
.hw__lattice { position: absolute; inset: 0; z-index: -1; pointer-events: none; }
.hw__layer { position: absolute; inset: -80px; will-change: transform; transition: transform .25s linear; }
.hw__layer svg { display: block; }
.lat-line { fill: none; stroke: rgba(124,245,200,.11); stroke-width: 1; }
.lat-line--far { stroke: rgba(190,255,235,.05); }
.lat-node { fill: rgba(124,245,200,.4); }
.hw__vignette { position: absolute; inset: 0; background: radial-gradient(60% 55% at 62% 50%, transparent 0%, var(--bg) 92%), linear-gradient(to bottom, var(--bg), transparent 18%, transparent 82%, var(--bg)); }

.hw__inner { display: grid; grid-template-columns: 1fr 1.05fr; gap: clamp(30px, 6vw, 90px); align-items: center; }
.hw__legend { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 36px; max-width: 520px; }
.hw__chip {
  font: 12.5px var(--font); color: var(--muted); background: rgba(255,255,255,.02);
  border: 1px solid var(--line-2); border-radius: 999px; padding: 7px 13px; cursor: pointer;
  transition: color .2s, border-color .2s, background .2s;
}
.hw__chip:hover, .hw__chip.is-active { color: var(--text); border-color: var(--accent); background: rgba(124,245,200,.07); }

.hw__stage { position: relative; perspective: 1400px; display: grid; place-items: center; }
.hw__tilt { position: relative; width: min(100%, 370px); transform-style: preserve-3d; transition: transform .35s var(--ease); }
.board { width: 100%; height: auto; overflow: visible; filter: drop-shadow(0 50px 60px rgba(0,0,0,.6)) drop-shadow(0 0 40px rgba(124,245,200,.06)); }
.pcb { fill: #0b0e0e; stroke: rgba(124,245,200,.22); }
.traces path { fill: none; stroke: rgba(124,245,200,.14); stroke-width: 2; }
.antenna { fill: none; stroke: #2a3433; stroke-width: 5; stroke-linejoin: round; }
.shield { stroke: rgba(255,255,255,.4); }
.etch { font: 500 11px var(--mono); fill: #4d5c59; letter-spacing: .02em; }
.etch--lg { font: 600 26px var(--font); letter-spacing: -.01em; fill: #3f4d4a; }
.etch--sm { font-size: 9.5px; }
.etch-pill { fill: none; stroke: #5c6b68; }
.memband { fill: rgba(40,55,52,.18); stroke: #6d7d7a; stroke-dasharray: 3 3; }
.castell path { stroke: #c9a24e; stroke-width: 6; stroke-dasharray: 5 4; }
.silk { font: 500 10.5px var(--mono); fill: #e3ebe8; }
.silk--lbl { font-size: 13px; letter-spacing: .06em; }
.silk--chip { font-size: 9px; fill: #8a9794; }
.ic { fill: #151a1a; stroke: #2b3534; }
.ic--thin { fill: #121616; }
.legs { stroke: #b9c4c1; stroke-width: 6; }
.legs--thin { stroke-width: 3; }
.cap { fill: #b98a5b; stroke: #6d5136; }
.mini rect { fill: #161b1b; stroke: #2f3a39; }
.btncap { fill: #1a1f1f; stroke: #3c4645; }
.ledglow { animation: ledpulse 3.2s ease-in-out infinite; transform-origin: 148px 542px; }
@keyframes ledpulse { 50% { opacity: .35; transform: scale(.85); } }

/* hover targets */
.cmp { cursor: pointer; outline: none; }
.cmp .hit { fill: transparent; stroke: transparent; stroke-width: 1.5; transition: stroke .2s, fill .2s; }
.cmp:hover .hit, .cmp:focus-visible .hit, .cmp.is-active .hit { stroke: var(--accent); fill: rgba(124,245,200,.07); stroke-dasharray: 5 4; animation: march 1s linear infinite; }
@keyframes march { to { stroke-dashoffset: -18; } }
.board.has-active .cmp:not(.is-active) > :not(.hit) { opacity: .45; transition: opacity .3s; }
.board .cmp > * { transition: opacity .3s; }

/* tooltip */
.tip {
  position: absolute; top: 0; left: 0; z-index: 5; width: 300px; padding: 18px 18px 16px;
  border-radius: 16px; border: 1px solid rgba(124,245,200,.28);
  background: linear-gradient(160deg, rgba(20,34,32,.88), rgba(8,13,13,.9));
  backdrop-filter: blur(16px) saturate(140%); -webkit-backdrop-filter: blur(16px) saturate(140%);
  box-shadow: 0 30px 70px -20px rgba(0,0,0,.85), 0 0 0 1px rgba(255,255,255,.02) inset;
  opacity: 0; transform: translateY(8px) scale(.98); pointer-events: none;
  transition: opacity .22s var(--ease), transform .28s var(--ease), left .28s var(--ease), top .28s var(--ease);
}
.tip.is-on { opacity: 1; transform: none; }
.tip::before { content: ""; position: absolute; left: 18px; right: 18px; top: 0; height: 1px; background: linear-gradient(90deg, transparent, var(--accent), transparent); }
.tip__head { display: flex; justify-content: space-between; align-items: center; }
.tip__tag { font-size: 10.5px; letter-spacing: .14em; color: var(--accent); text-transform: uppercase; }
.tip__idx { font-size: 10.5px; color: var(--dim); }
.tip__title { font-size: 20px; letter-spacing: -.02em; margin: 10px 0 6px; }
.tip__text { color: #b5c4c0; font-size: 13.5px; line-height: 1.5; }
.tip__specs { list-style: none; padding: 0; margin: 12px 0 0; display: flex; flex-wrap: wrap; gap: 6px; }
.tip__specs li { font-size: 10.5px; color: var(--text); padding: 4px 8px; border-radius: 6px; background: rgba(124,245,200,.08); border: 1px solid var(--line); }
.tip__role { margin-top: 14px; padding-top: 12px; border-top: 1px solid var(--line); font-size: 13px; color: var(--text); display: grid; gap: 4px; }
.tip__role .mono { font-size: 9.5px; letter-spacing: .14em; color: var(--muted); }

@media (max-width: 860px) {
  .hw__inner { grid-template-columns: 1fr; }
  .hw__tilt { width: min(100%, 340px); }
  .tip { position: fixed; left: 16px !important; right: 16px; top: auto !important; bottom: 16px; width: auto; z-index: 60; }
}