/* ============================================================
   AIRO — decentralized air quality network
   Visual system: "scientific instrument" · light & airy
   Type: Space Grotesk (display/body) + JetBrains Mono (data)
   Accent: cyan (device signal) + green (brand / eco)
   ============================================================ */

:root {
  /* ---- surfaces ---- */
  --paper: #f4f7f6;          /* page background, cool airy white */
  --paper-2: #eef2f1;        /* alternating section */
  --card: #ffffff;           /* panels */
  --ink: #0a1411;            /* primary text, cool near-black */
  --ink-2: #51605a;          /* secondary text */
  --ink-3: #8a968f;          /* tertiary / captions */
  --line: rgba(10, 20, 17, 0.10);   /* hairlines */
  --line-2: rgba(10, 20, 17, 0.055); /* faint grid */
  --dark: #070b0a;           /* dark instrument panels (matches device bg) */
  --dark-2: #0f1614;

  /* ---- accents ---- */
  --cyan: #06b0c4;           /* legible cyan on white */
  --cyan-bright: #1fd6e6;    /* device glow */
  --green: #129a4c;          /* brand green */
  --green-bright: #27c463;

  /* ---- type ---- */
  --sans: "Space Grotesk", -apple-system, BlinkMacSystemFont, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", monospace;

  /* ---- metrics ---- */
  --maxw: 1280px;
  --gutter: clamp(20px, 5vw, 64px);
  --radius: 14px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

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

body {
  font-family: var(--sans);
  background: var(--paper);
  color: var(--ink);
  line-height: 1.5;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

/* faint blueprint grid over the whole page */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    linear-gradient(var(--line-2) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-2) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 120% 90% at 50% 0%, #000 35%, transparent 95%);
}

::selection { background: var(--cyan-bright); color: var(--dark); }

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

/* ---------- layout helpers ---------- */
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 var(--gutter); position: relative; z-index: 1; }
section { position: relative; z-index: 1; }

.eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cyan);
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.eyebrow::before {
  content: "";
  width: 22px; height: 1px;
  background: var(--cyan);
  display: inline-block;
}

.sec-index {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--ink-3);
  text-transform: uppercase;
}

h1, h2, h3 { font-weight: 500; line-height: 1.04; letter-spacing: -0.02em; text-wrap: balance; }
h2 { font-size: clamp(32px, 4.6vw, 60px); }
h3 { font-size: clamp(22px, 2.4vw, 30px); letter-spacing: -0.01em; }
p { text-wrap: pretty; }

.lead { font-size: clamp(18px, 2vw, 22px); color: var(--ink-2); line-height: 1.55; max-width: 56ch; }

/* mono data label */
.mono { font-family: var(--mono); }
.tag {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-2);
  border: 1px solid var(--line);
  border-radius: 100px;
  padding: 5px 11px;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  background: var(--card);
}
.tag .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--green-bright); box-shadow: 0 0 0 0 rgba(39,196,99,.5); animation: pulse 2.4s infinite; }
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(39,196,99,.45); }
  70% { box-shadow: 0 0 0 7px rgba(39,196,99,0); }
  100% { box-shadow: 0 0 0 0 rgba(39,196,99,0); }
}

/* ---------- buttons ---------- */
.btn {
  font-family: var(--sans);
  font-size: 15px;
  font-weight: 500;
  letter-spacing: -0.01em;
  padding: 13px 22px;
  border-radius: 100px;
  border: 1px solid transparent;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  transition: transform .18s ease, background .2s ease, box-shadow .25s ease, color .2s ease;
  white-space: nowrap;
}
.btn svg { width: 16px; height: 16px; }
.btn-primary {
  background: var(--ink);
  color: #fff;
  box-shadow: 0 1px 0 rgba(255,255,255,.06) inset, 0 8px 22px rgba(10,20,17,.18);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 14px 30px rgba(10,20,17,.26); }
.btn-primary .arrow { transition: transform .2s ease; }
.btn-primary:hover .arrow { transform: translateX(3px); }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn-ghost:hover { background: var(--card); border-color: rgba(10,20,17,.22); transform: translateY(-2px); }
.btn-cyan {
  background: var(--cyan);
  color: #04181b;
  box-shadow: 0 8px 24px rgba(6,176,196,.32);
}
.btn-cyan:hover { transform: translateY(-2px); background: var(--cyan-bright); box-shadow: 0 14px 34px rgba(31,214,230,.4); }

/* ============================================================
   NAV
   ============================================================ */
header.nav {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 100;
  transition: background .3s ease, box-shadow .3s ease, border-color .3s ease;
  border-bottom: 1px solid transparent;
}
header.nav.scrolled {
  background: rgba(244,247,246,0.82);
  backdrop-filter: saturate(140%) blur(14px);
  -webkit-backdrop-filter: saturate(140%) blur(14px);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  max-width: var(--maxw); margin: 0 auto;
  padding: 16px var(--gutter);
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
}
.brand { display: flex; align-items: center; gap: 11px; }
.brand img { width: 30px; height: 30px; }
.brand .wordmark { font-weight: 700; font-size: 21px; letter-spacing: 0.02em; }
.brand .tm { font-family: var(--mono); font-size: 10px; color: var(--ink-3); align-self: flex-start; margin-top: 2px; }
.nav-links { display: flex; gap: 30px; }
.nav-links a {
  font-family: var(--mono);
  font-size: 13px; letter-spacing: 0.02em; color: var(--ink-2);
  position: relative; padding: 4px 0; transition: color .2s ease;
}
.nav-links a::after {
  content: ""; position: absolute; left: 0; bottom: -2px; height: 1px; width: 0;
  background: var(--cyan); transition: width .25s ease;
}
.nav-links a:hover { color: var(--ink); }
.nav-links a:hover::after { width: 100%; }
.nav-cta { display: flex; align-items: center; gap: 14px; }
.menu-toggle { display: none; place-items: center; width: 42px; height: 42px; flex: none; background: var(--card); border: 1px solid var(--line); border-radius: 11px; color: var(--ink); cursor: pointer; transition: border-color .2s ease, background .2s ease; }
.menu-toggle:hover { border-color: rgba(10,20,17,.22); }
.menu-toggle svg { width: 20px; height: 20px; }
.menu-toggle .i-close { display: none; }
header.nav.open .menu-toggle .i-open { display: none; }
header.nav.open .menu-toggle .i-close { display: block; }

/* ============================================================
   HERO
   ============================================================ */
.hero { padding: 150px 0 70px; position: relative; overflow: hidden; }
#particles { position: absolute; inset: 0; width: 100%; height: 100%; z-index: 0; }
.hero .wrap { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 56px; align-items: center; }
.hero-copy { position: relative; z-index: 2; }
.hero h1 {
  font-size: clamp(40px, 6.4vw, 82px);
  font-weight: 500;
  margin: 22px 0 24px;
}
.hero h1 .hl { position: relative; white-space: nowrap; }
.hero h1 .hl::after {
  content: ""; position: absolute; left: -2px; right: -2px; bottom: 6px; height: 0.34em;
  background: linear-gradient(90deg, rgba(31,214,230,.38), rgba(39,196,99,.32));
  z-index: -1; border-radius: 2px;
}
.hero-actions { display: flex; gap: 14px; margin-top: 34px; flex-wrap: wrap; }
.hero-meta { display: flex; gap: 30px; margin-top: 40px; flex-wrap: wrap; }
.hero-meta .m-val { font-family: var(--mono); font-size: 26px; font-weight: 600; letter-spacing: -0.02em; }
.hero-meta .m-lbl { font-family: var(--mono); font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-3); margin-top: 3px; }

/* device showcase panel */
.device-panel {
  position: relative; z-index: 2;
  background: radial-gradient(120% 90% at 50% 8%, #12201d 0%, var(--dark) 55%, #040807 100%);
  border-radius: 22px;
  border: 1px solid rgba(255,255,255,.08);
  padding: 22px;
  box-shadow: 0 40px 90px -30px rgba(6,30,28,.55), 0 0 0 1px rgba(10,20,17,.04);
  overflow: hidden;
}
.device-panel .panel-top {
  display: flex; justify-content: space-between; align-items: center;
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase;
  color: rgba(255,255,255,.55);
  border-bottom: 1px solid rgba(255,255,255,.08);
  padding-bottom: 12px; margin-bottom: 8px;
}
.device-panel .panel-top .live { color: var(--cyan-bright); display: flex; align-items: center; gap: 7px; }
.device-panel .panel-top .live i { width: 7px; height: 7px; border-radius: 50%; background: var(--cyan-bright); box-shadow: 0 0 10px var(--cyan-bright); animation: pulse-cyan 1.8s infinite; }
@keyframes pulse-cyan { 0%,100%{opacity:1} 50%{opacity:.3} }
.device-stage { position: relative; }
.device-stage img { width: 100%; height: auto; mix-blend-mode: screen; filter: saturate(1.05); }
/* readouts overlaid */
.readouts { position: absolute; inset: 0; pointer-events: none; }
.readout {
  position: absolute;
  font-family: var(--mono);
  background: rgba(7,11,10,.55);
  border: 1px solid rgba(255,255,255,.12);
  backdrop-filter: blur(4px);
  border-radius: 8px;
  padding: 8px 11px;
  color: #eaf6f4;
}
.readout .r-lbl { font-size: 9.5px; letter-spacing: 0.12em; text-transform: uppercase; color: rgba(255,255,255,.5); }
.readout .r-val { font-size: 17px; font-weight: 600; line-height: 1.1; margin-top: 2px; }
.readout .r-val small { font-size: 10px; font-weight: 400; color: rgba(255,255,255,.55); }
.readout.good .r-val { color: var(--green-bright); }
.readout.cyan .r-val { color: var(--cyan-bright); }
.r-aqi { top: 8%; left: 4%; }
.r-pm  { top: 30%; right: 3%; }
.r-co2 { bottom: 26%; left: 3%; }
.r-temp{ bottom: 7%; right: 6%; }

/* connecting hairlines drawn from readouts toward device (decorative) */
.device-panel .panel-foot {
  margin-top: 10px; padding-top: 12px; border-top: 1px solid rgba(255,255,255,.08);
  display: flex; justify-content: space-between; align-items: center;
  font-family: var(--mono); font-size: 11px; color: rgba(255,255,255,.45); letter-spacing: 0.06em;
}

/* ---------- problem stat strip ---------- */
.stat-strip { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--card); }
.stat-strip .wrap { display: grid; grid-template-columns: repeat(3, 1fr); }
.stat-cell { padding: 38px 28px; border-right: 1px solid var(--line); }
.stat-cell:last-child { border-right: none; }
.stat-cell .s-num { font-family: var(--mono); font-size: clamp(34px, 4vw, 50px); font-weight: 600; letter-spacing: -0.03em; }
.stat-cell .s-num .u { color: var(--cyan); }
.stat-cell .s-desc { color: var(--ink-2); margin-top: 8px; font-size: 15px; max-width: 34ch; }

/* ============================================================
   GENERIC SECTION
   ============================================================ */
.sec { padding: clamp(80px, 11vw, 150px) 0; }
.sec-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 30px; margin-bottom: 56px; flex-wrap: wrap; }
.sec-head .lead { margin-top: 18px; }
.sec-head-l { max-width: 720px; }
.alt { background: var(--paper-2); }

/* ---------- mission ---------- */
.mission-grid { display: grid; grid-template-columns: 1.3fr 1fr; gap: 60px; align-items: start; }
.mission-grid h2 { margin-bottom: 26px; }
.mission-quote {
  border-left: 2px solid var(--cyan);
  padding: 4px 0 4px 22px;
  font-size: clamp(19px, 2.2vw, 26px);
  line-height: 1.4; letter-spacing: -0.01em;
}
.mission-quote cite { display: block; margin-top: 14px; font-family: var(--mono); font-size: 12px; font-style: normal; color: var(--ink-3); letter-spacing: 0.06em; }
.mission-side { display: flex; flex-direction: column; gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.mission-side .row { background: var(--card); padding: 22px; display: flex; gap: 16px; align-items: flex-start; }
.mission-side .row .ic { width: 34px; height: 34px; flex: none; border-radius: 9px; border: 1px solid var(--line); display: grid; place-items: center; color: var(--cyan); }
.mission-side .row .ic svg { width: 18px; height: 18px; }
.mission-side .row .t { font-weight: 500; font-size: 16px; }
.mission-side .row .d { color: var(--ink-2); font-size: 14px; margin-top: 3px; }

/* ---------- how it works ---------- */
.flow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: var(--card); }
.flow .step { padding: 30px 26px 34px; border-right: 1px solid var(--line); position: relative; transition: background .25s ease; }
.flow .step:last-child { border-right: none; }
.flow .step:hover { background: var(--paper-2); }
.flow .step .n { font-family: var(--mono); font-size: 12px; color: var(--cyan); letter-spacing: 0.1em; }
.flow .step .ic { width: 46px; height: 46px; border-radius: 12px; border: 1px solid var(--line); display: grid; place-items: center; margin: 22px 0 18px; color: var(--ink); background: var(--paper); }
.flow .step .ic svg { width: 23px; height: 23px; }
.flow .step h3 { font-size: 20px; margin-bottom: 8px; }
.flow .step p { color: var(--ink-2); font-size: 14.5px; }
.flow .step .arr { position: absolute; right: -11px; top: 40px; z-index: 3; width: 22px; height: 22px; border-radius: 50%; background: var(--card); border: 1px solid var(--line); display: grid; place-items: center; color: var(--ink-3); }
.flow .step:last-child .arr { display: none; }
.flow .step .arr svg { width: 12px; height: 12px; }

/* ---------- device spec ---------- */
.spec-grid { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 52px; align-items: center; }
.spec-stage {
  background: radial-gradient(110% 80% at 50% 12%, #13211e 0%, var(--dark) 60%, #040807 100%);
  border-radius: 20px; border: 1px solid rgba(255,255,255,.08);
  padding: 30px; position: relative; overflow: hidden;
  box-shadow: 0 40px 90px -34px rgba(6,30,28,.5);
}
.spec-stage img { width: 78%; margin: 0 auto; mix-blend-mode: screen; }
.spec-stage .corner { position: absolute; width: 16px; height: 16px; border: 1px solid rgba(255,255,255,.25); }
.spec-stage .corner.tl { top: 14px; left: 14px; border-right: 0; border-bottom: 0; }
.spec-stage .corner.tr { top: 14px; right: 14px; border-left: 0; border-bottom: 0; }
.spec-stage .corner.bl { bottom: 14px; left: 14px; border-right: 0; border-top: 0; }
.spec-stage .corner.br { bottom: 14px; right: 14px; border-left: 0; border-top: 0; }
.spec-stage .stamp { position: absolute; bottom: 18px; left: 18px; font-family: var(--mono); font-size: 10px; letter-spacing: 0.14em; color: rgba(255,255,255,.4); text-transform: uppercase; }
.spec-list { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.spec-item { background: var(--card); padding: 20px 22px; }
.spec-item .k { font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-3); }
.spec-item .v { font-size: 17px; font-weight: 500; margin-top: 6px; letter-spacing: -0.01em; }
.spec-item .v span { color: var(--cyan); }

/* ---------- rewards ---------- */
.reward-grid { display: grid; grid-template-columns: 0.85fr 1.15fr; gap: 56px; align-items: center; }
.token-stage { position: relative; display: grid; place-items: center; padding: 30px; }
.token-stage .glow { position: absolute; width: 70%; aspect-ratio: 1; border-radius: 50%; background: radial-gradient(circle, rgba(39,196,99,.28), transparent 65%); filter: blur(10px); }
.token-stage img { width: 64%; border-radius: 24px; position: relative; box-shadow: 0 30px 70px -22px rgba(8,40,20,.55); animation: float 6s ease-in-out infinite; }
@keyframes float { 0%,100%{ transform: translateY(0) } 50%{ transform: translateY(-14px) } }
.reward-list { display: flex; flex-direction: column; gap: 14px; margin-top: 28px; }
.reward-row { display: flex; gap: 16px; align-items: flex-start; padding: 18px 20px; border: 1px solid var(--line); border-radius: 12px; background: var(--card); transition: transform .2s ease, border-color .2s ease; }
.reward-row:hover { transform: translateX(4px); border-color: rgba(18,154,76,.4); }
.reward-row .ic { width: 38px; height: 38px; flex: none; border-radius: 10px; background: linear-gradient(135deg, var(--green), var(--green-bright)); display: grid; place-items: center; color: #fff; }
.reward-row .ic svg { width: 19px; height: 19px; }
.reward-row .t { font-weight: 500; font-size: 16px; }
.reward-row .d { color: var(--ink-2); font-size: 14px; margin-top: 2px; }

/* ---------- token / tokenomics ---------- */
.token-hero { display: grid; grid-template-columns: 0.78fr 1.22fr; gap: 52px; align-items: center; }
.token-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.token-stat { background: var(--card); padding: 22px; }
.token-stat .tv { font-family: var(--mono); font-size: clamp(24px, 2.6vw, 32px); font-weight: 600; letter-spacing: -0.02em; }
.token-stat .tv .u { color: var(--green); }
.token-stat .tl { font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-3); margin-top: 5px; }
.contract { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-top: 18px; font-family: var(--mono); font-size: 12px; background: var(--dark); border: 1px solid rgba(255,255,255,.08); border-radius: 10px; padding: 13px 15px; color: rgba(255,255,255,.6); }
.contract .ck { letter-spacing: 0.1em; text-transform: uppercase; font-size: 10px; }
.contract code { color: var(--cyan-bright); word-break: break-all; flex: 1; min-width: 200px; }
.contract a { color: rgba(255,255,255,.8); white-space: nowrap; border-bottom: 1px solid rgba(255,255,255,.25); padding-bottom: 1px; }
.contract a:hover { color: var(--cyan-bright); }

/* distribution bars */
.dist { display: flex; flex-direction: column; gap: 15px; }
.dist-row { display: grid; grid-template-columns: 1fr; gap: 7px; }
.dist-top { display: flex; justify-content: space-between; align-items: baseline; font-size: 14px; }
.dist-top .dn { font-weight: 500; }
.dist-top .dp { font-family: var(--mono); font-weight: 600; }
.dist-top .da { font-family: var(--mono); font-size: 11px; color: var(--ink-3); margin-left: 8px; }
.dist-track { height: 8px; border-radius: 100px; background: var(--paper-2); overflow: hidden; border: 1px solid var(--line); }
.dist-fill { height: 100%; width: 0; border-radius: 100px; transition: width 1.1s cubic-bezier(.2,.7,.2,1); }

/* utility grid */
.util-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.util { border: 1px solid var(--line); border-radius: 13px; padding: 24px; background: var(--card); box-shadow: 0 1px 2px rgba(10,20,17,.04), 0 10px 26px -10px rgba(10,20,17,.07); transition: transform .2s ease, border-color .2s ease, box-shadow .25s ease; }
.util:hover { transform: translateY(-3px); border-color: rgba(6,176,196,.45); box-shadow: 0 18px 40px -20px rgba(6,60,66,.4); }
.util .k { width: 30px; height: 30px; border-radius: 8px; display: grid; place-items: center; border: 1px solid var(--line); color: var(--cyan); margin-bottom: 16px; }
.util .k svg { width: 16px; height: 16px; }
.util h4 { font-size: 16px; font-weight: 500; color: var(--ink); letter-spacing: -0.01em; }
.util p { font-size: 13.5px; color: var(--ink-2); margin-top: 6px; line-height: 1.6; }
.util a { font-family: var(--mono); font-size: 11px; letter-spacing: 0.04em; color: var(--cyan); margin-top: 10px; display: inline-block; }
.util a:hover { color: var(--green); }

/* burn + MNR info cards */
.info-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 56px; }
.info-card { border: 1px solid var(--line); border-radius: 16px; padding: 30px; background: var(--card); }
.info-card .kic { font-family: var(--mono); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--cyan); }
.info-card h3 { font-size: 22px; margin: 12px 0 12px; }
.info-card p { color: var(--ink-2); font-size: 14.5px; }
.info-card .big-stat { font-family: var(--mono); font-size: 44px; font-weight: 600; letter-spacing: -0.03em; margin: 6px 0 4px; color: var(--green); }
.formula { font-family: var(--mono); font-size: 13px; background: var(--dark); color: var(--cyan-bright); border-radius: 10px; padding: 16px; margin-top: 16px; text-align: center; letter-spacing: 0.02em; }

/* ecosystem */
.eco-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.eco-card { border: 1px solid var(--line); border-radius: 16px; padding: 28px 24px; background: var(--card); box-shadow: 0 1px 2px rgba(10,20,17,.04), 0 12px 30px -12px rgba(10,20,17,.08); transition: transform .22s ease, box-shadow .28s ease, border-color .22s ease; position: relative; display: flex; flex-direction: column; }
.eco-card:hover { transform: translateY(-5px); box-shadow: 0 26px 56px -26px rgba(6,40,30,.4); border-color: rgba(18,154,76,.4); }
.eco-card .ec-ic { width: 46px; height: 46px; border-radius: 12px; display: grid; place-items: center; border: 1px solid var(--line); color: var(--ink); margin-bottom: 18px; background: var(--paper); }
.eco-card .ec-ic svg { width: 23px; height: 23px; }
.eco-card h4 { font-size: 18px; font-weight: 500; letter-spacing: -0.01em; }
.eco-card p { font-size: 13.5px; color: var(--ink-2); margin-top: 7px; line-height: 1.6; flex: 1; }
.eco-card a.play { font-family: var(--mono); font-size: 11px; letter-spacing: 0.04em; color: var(--cyan); margin-top: 14px; display: inline-flex; align-items: center; gap: 6px; }
.eco-card a.play:hover { color: var(--green); }
.eco-card.feature { border-color: rgba(6,176,196,.45); background: linear-gradient(180deg, #fff, #f1fbfc); }
.badge { display: inline-flex; align-items: center; gap: 6px; font-family: var(--mono); font-size: 10px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--cyan); border: 1px solid rgba(6,176,196,.4); border-radius: 100px; padding: 4px 9px; margin-bottom: 14px; align-self: flex-start; background: rgba(6,176,196,.06); }
.badge i { width: 6px; height: 6px; border-radius: 50%; background: var(--cyan-bright); box-shadow: 0 0 8px var(--cyan-bright); animation: pulse-cyan 1.8s infinite; }

/* ---------- team / manifesto / CTA ---------- */
.manifesto { text-align: center; padding: clamp(80px,10vw,130px) 0; }
.manifesto .big { font-size: clamp(30px, 4.4vw, 58px); font-weight: 500; letter-spacing: -0.02em; line-height: 1.08; max-width: 18ch; margin: 26px auto 0; }
.manifesto .big em { font-style: normal; color: var(--cyan); }
.manifesto .geo { display: inline-flex; gap: 10px; margin-top: 34px; font-family: var(--mono); font-size: 12px; letter-spacing: 0.08em; color: var(--ink-2); flex-wrap: wrap; justify-content: center; }
.manifesto .geo span { border: 1px solid var(--line); border-radius: 100px; padding: 7px 15px; background: var(--card); }

.cta {
  background: radial-gradient(120% 130% at 50% -10%, #0f1c1a 0%, var(--dark) 60%, #040807 100%);
  color: #fff; border-radius: 26px; padding: clamp(50px,7vw,90px) var(--gutter); text-align: center;
  position: relative; overflow: hidden;
  border: 1px solid rgba(255,255,255,.08);
}
.cta::before {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 0%, #000, transparent 80%);
}
.cta-inner { position: relative; z-index: 2; max-width: 720px; margin: 0 auto; }
.cta h2 { font-size: clamp(32px, 4.6vw, 60px); }
.cta p { color: rgba(255,255,255,.66); font-size: 18px; margin: 20px auto 0; max-width: 48ch; }
.cta .hero-actions { justify-content: center; margin-top: 38px; }
.cta .btn-ghost { color: #fff; border-color: rgba(255,255,255,.22); }
.cta .btn-ghost:hover { background: rgba(255,255,255,.08); border-color: rgba(255,255,255,.4); }

/* email capture form */
.signup { max-width: 540px; margin: 34px auto 0; }
.signup-row { display: flex; gap: 10px; background: rgba(255,255,255,.07); border: 1px solid rgba(255,255,255,.16); border-radius: 100px; padding: 7px 7px 7px 8px; transition: border-color .2s ease, background .2s ease; }
.signup-row:focus-within { border-color: var(--cyan); background: rgba(255,255,255,.1); }
.signup-row input { flex: 1; min-width: 0; background: transparent; border: 0; outline: 0; color: #fff; font-family: var(--sans); font-size: 16px; padding: 0 16px; }
.signup-row input::placeholder { color: rgba(255,255,255,.45); }
.signup .btn-cyan { flex: none; }
.signup.is-error .signup-row { border-color: #ff6b5e; }
.signup.is-done .signup-row { border-color: var(--green-bright); }
.signup-msg { min-height: 18px; margin-top: 12px; font-family: var(--mono); font-size: 12px; letter-spacing: 0.02em; color: var(--cyan-bright); }
.signup.is-error .signup-msg { color: #ff8a80; }
.signup.is-done .signup-msg { color: var(--green-bright); }
.signup-note { margin-top: 4px; font-size: 12px; color: rgba(255,255,255,.4); }
.signup-alt { display: inline-block; margin-top: 18px; font-family: var(--mono); font-size: 12px; letter-spacing: 0.04em; color: rgba(255,255,255,.6); border-bottom: 1px solid rgba(255,255,255,.2); padding-bottom: 1px; }
.signup-alt:hover { color: var(--cyan-bright); }
@media (max-width: 560px) {
  .signup-row { flex-direction: column; border-radius: 18px; padding: 10px; }
  .signup-row input { padding: 10px 12px; }
  .signup .btn-cyan { justify-content: center; }
}

/* ---------- footer ---------- */
footer { padding: 70px 0 40px; border-top: 1px solid var(--line); margin-top: 90px; }
.foot-top { display: flex; justify-content: space-between; gap: 40px; flex-wrap: wrap; padding-bottom: 40px; border-bottom: 1px solid var(--line); }
.foot-brand { max-width: 320px; }
.foot-brand .brand { margin-bottom: 16px; }
.foot-brand p { color: var(--ink-2); font-size: 14px; }
.foot-cols { display: flex; gap: 64px; flex-wrap: wrap; }
.foot-col h4 { font-family: var(--mono); font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-3); margin-bottom: 14px; font-weight: 500; }
.foot-col a { display: block; font-size: 14px; color: var(--ink-2); padding: 5px 0; transition: color .2s ease; }
.foot-col a:hover { color: var(--ink); }
.foot-bot { display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; padding-top: 26px; font-family: var(--mono); font-size: 12px; color: var(--ink-3); letter-spacing: 0.04em; }
.foot-disclaimer { margin-top: 18px; font-size: 11.5px; line-height: 1.6; color: var(--ink-3); max-width: 90ch; }

/* ============================================================
   SCROLL REVEAL
   ============================================================ */
.reveal { opacity: 0; transform: translateY(26px); transition: transform .7s cubic-bezier(.2,.7,.2,1); }
.reveal.in { opacity: 1; transform: none; }
.reveal[data-d="1"] { transition-delay: .08s; }
.reveal[data-d="2"] { transition-delay: .16s; }
.reveal[data-d="3"] { transition-delay: .24s; }

/* Reduced motion: keep one-shot reveals + data readouts, only calm the
   continuous decorative loops (float / pulse / particle drift). */
@media (prefers-reduced-motion: reduce) {
  .tag .dot,
  .device-panel .panel-top .live i,
  .token-stage img { animation: none !important; }
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 980px) {
  .hero .wrap { grid-template-columns: 1fr; gap: 44px; }
  .device-panel { max-width: 520px; }
  .mission-grid, .spec-grid, .net-grid, .reward-grid { grid-template-columns: 1fr; gap: 40px; }
  .token-hero { grid-template-columns: 1fr; gap: 36px; }
  .util-grid { grid-template-columns: repeat(2, 1fr); }
  .eco-grid { grid-template-columns: repeat(2, 1fr); }
  .info-2 { grid-template-columns: 1fr; }
  .flow { grid-template-columns: 1fr 1fr; }
  .flow .step:nth-child(2) { border-right: none; }
  .flow .step .arr { display: none; }

  /* mobile dropdown nav */
  .menu-toggle { display: grid; }
  header.nav.open { background: rgba(244,247,246,0.92); backdrop-filter: saturate(140%) blur(14px); -webkit-backdrop-filter: saturate(140%) blur(14px); border-bottom: 1px solid var(--line); }
  .nav-links {
    position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; gap: 0;
    padding: 6px var(--gutter) 18px;
    background: rgba(244,247,246,0.97);
    backdrop-filter: saturate(140%) blur(14px);
    -webkit-backdrop-filter: saturate(140%) blur(14px);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 24px 40px -28px rgba(10,20,17,.4);
    opacity: 0; transform: translateY(-10px); pointer-events: none;
    transition: opacity .22s ease, transform .22s ease;
  }
  header.nav.open .nav-links { opacity: 1; transform: none; pointer-events: auto; }
  .nav-links a { font-size: 15px; padding: 13px 2px; border-bottom: 1px solid var(--line-2); }
  .nav-links a::after { display: none; }
}
@media (max-width: 620px) {
  body { font-size: 16px; }
  .nav-cta .btn-ghost { display: none; }
  .hero { padding: 120px 0 50px; }
  .stat-strip .wrap { grid-template-columns: 1fr; }
  .stat-cell { border-right: none; border-bottom: 1px solid var(--line); }
  .stat-cell:last-child { border-bottom: none; }
  .flow { grid-template-columns: 1fr; }
  .flow .step { border-right: none; border-bottom: 1px solid var(--line); }
  .spec-list { grid-template-columns: 1fr; }
  .net-stats { grid-template-columns: 1fr; }
  .util-grid { grid-template-columns: 1fr; }
  .eco-grid { grid-template-columns: 1fr; }
  .token-stats { grid-template-columns: 1fr; }
  .hero-meta { gap: 22px; }
  .readout .r-val { font-size: 14px; }
  .readout { padding: 6px 8px; }
}

/* ============================================================
   3D MODEL VIEWER (AIRO A7 assembly)
   ============================================================ */
.model-panel { position: relative; background: radial-gradient(120% 95% at 50% 6%, #112320 0%, var(--dark) 60%, #040807 100%); border: 1px solid rgba(255,255,255,.08); border-radius: 20px; overflow: hidden; min-height: 520px; box-shadow: 0 40px 90px -34px rgba(6,30,28,.5); }
.model-panel > #device-field { position: absolute; inset: 0; z-index: 0; }
#model3d { position: absolute; inset: 0; z-index: 1; }
#model3d canvas { display: block; width: 100% !important; height: 100% !important; cursor: grab; }
#model3d canvas:active { cursor: grabbing; }
.model-loader { position: absolute; inset: 0; display: grid; place-items: center; z-index: 2; font-family: var(--mono); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: rgba(255,255,255,.4); pointer-events: none; }
.model-loader::after { content: ""; position: absolute; width: 30px; height: 30px; margin-top: 40px; border: 2px solid rgba(255,255,255,.15); border-top-color: var(--cyan-bright); border-radius: 50%; animation: spin 0.9s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
#model3d.model-ready ~ .model-loader { opacity: 0; visibility: hidden; transition: opacity .4s ease; }
#model3d.model-fail ~ .model-loader::after { display: none; }
.model-bar { position: absolute; top: 0; left: 0; right: 0; display: flex; justify-content: space-between; align-items: center; padding: 16px 18px; z-index: 3; pointer-events: none; }
.model-cap { font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.12em; text-transform: uppercase; color: rgba(255,255,255,.6); }
.model-btns { display: flex; gap: 8px; pointer-events: auto; }
.model-btn { font-family: var(--mono); font-size: 11px; letter-spacing: 0.03em; color: #dff7fb; background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.16); border-radius: 100px; padding: 7px 14px; cursor: pointer; transition: background .2s ease, color .2s ease, border-color .2s ease; }
.model-btn:hover { background: var(--cyan); color: #042; border-color: var(--cyan); }
.model-hint { position: absolute; bottom: 14px; left: 50%; transform: translateX(-50%); z-index: 3; font-family: var(--mono); font-size: 10px; letter-spacing: 0.12em; text-transform: uppercase; color: rgba(255,255,255,.32); pointer-events: none; }
@media (max-width: 980px) { .model-panel { min-height: 440px; } }

/* ============================================================
   BREATHE / HEALTH  +  DEVICE TICKER  +  ANNOTATED BOARD
   ============================================================ */
/* hero device data ticker */
.ticker { margin-top: 10px; height: 50px; overflow: hidden; border-top: 1px solid rgba(255,255,255,.08); padding-top: 9px; position: relative; -webkit-mask-image: linear-gradient(180deg, transparent, #000 22%, #000 78%, transparent); mask-image: linear-gradient(180deg, transparent, #000 22%, #000 78%, transparent); }
.ticker-inner { display: flex; flex-direction: column; gap: 5px; animation: tick 11s linear infinite; }
.ticker .tk { font-family: var(--mono); font-size: 10.5px; color: rgba(255,255,255,.42); display: flex; justify-content: space-between; gap: 14px; }
.ticker .tk b { color: var(--cyan-bright); font-weight: 600; }
.ticker .tk .ok { color: var(--green-bright); }
@keyframes tick { from { transform: translateY(0); } to { transform: translateY(-50%); } }

/* breathe / health section */
.breathe-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.vitals { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; margin-top: 32px; }
.vital { border: 1px solid var(--line); border-radius: 12px; padding: 18px 20px; background: var(--card); }
.vital .vk { font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-3); }
.vital .vv { font-family: var(--mono); font-size: 26px; font-weight: 600; letter-spacing: -0.02em; margin-top: 5px; }
.vital .vv small { font-size: 12px; font-weight: 400; color: var(--ink-3); }
.vital .vv.good { color: var(--green); }
.vital .vv.warn { color: #d9881f; }
.vital .vv.cyan { color: var(--cyan); }

.breath-stage { position: relative; aspect-ratio: 1 / 1; border-radius: 24px; overflow: hidden;
  background: radial-gradient(circle at 50% 42%, #0c211e 0%, var(--dark) 68%, #040807 100%);
  border: 1px solid rgba(255,255,255,.08); display: grid; place-items: center;
  box-shadow: 0 40px 90px -34px rgba(6,30,28,.55); }
.breath-stage .bgrid { position: absolute; inset: 0; background-image: linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px); background-size: 40px 40px; mask-image: radial-gradient(circle at 50% 45%, #000 30%, transparent 75%); }
.breath-rings { position: absolute; inset: 0; display: grid; place-items: center; }
.breath-rings span { position: absolute; width: 150px; height: 150px; border-radius: 50%; border: 1px solid rgba(31,214,230,.5); animation: breatheRing 7.5s ease-out infinite; }
.breath-rings span:nth-child(2) { animation-delay: 1.5s; }
.breath-rings span:nth-child(3) { animation-delay: 3s; }
.breath-rings span:nth-child(4) { animation-delay: 4.5s; }
@keyframes breatheRing { 0% { transform: scale(.45); opacity: 0; } 18% { opacity: .65; } 100% { transform: scale(2.7); opacity: 0; } }
.breath-orb { width: 150px; height: 150px; border-radius: 50%; position: relative; z-index: 2;
  background: radial-gradient(circle at 38% 32%, #4af3e0 0%, #1fd6e6 38%, #06b0c4 66%, #045561 100%);
  box-shadow: 0 0 70px rgba(31,214,230,.55), inset 0 0 40px rgba(255,255,255,.25);
  animation: orbBreath 7.5s ease-in-out infinite; }
@keyframes orbBreath { 0%, 100% { transform: scale(.78); } 50% { transform: scale(1.12); } }
.breath-label { position: absolute; top: 20px; left: 20px; z-index: 3; font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.12em; text-transform: uppercase; color: rgba(255,255,255,.55); }
.breath-label .ph { color: var(--cyan-bright); }
.o2gauge { position: absolute; top: 16px; right: 16px; z-index: 3; width: 92px; height: 92px; }
.o2gauge text.v { font-family: var(--mono); font-weight: 600; fill: #eafaff; }
.o2gauge text.l { font-family: var(--mono); fill: rgba(255,255,255,.5); letter-spacing: 2px; }
.resp-wrap { position: absolute; left: 0; right: 0; bottom: 0; height: 78px; z-index: 3; }
#resp { display: block; width: 100%; height: 100%; }

/* inside the A1 — annotated board */
.board-wrap { margin-top: 26px; }
.board-card { position: relative; background: radial-gradient(120% 100% at 50% 0%, #112320 0%, var(--dark) 70%, #040807 100%); border: 1px solid rgba(255,255,255,.08); border-radius: 22px; padding: clamp(20px, 3vw, 40px); overflow: hidden; box-shadow: 0 40px 90px -36px rgba(6,30,28,.5); }
.board-card .bg-grid { position: absolute; inset: 0; background-image: linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px); background-size: 42px 42px; mask-image: radial-gradient(ellipse 90% 80% at 40% 40%, #000 40%, transparent 90%); }
.board-layout { position: relative; z-index: 1; display: grid; grid-template-columns: 1.25fr 0.75fr; gap: 40px; align-items: center; }
.board-stage { position: relative; width: 100%; max-width: 560px; margin: 0 auto; }
.board-stage img { width: 100%; filter: drop-shadow(0 24px 48px rgba(0,0,0,.55)); }
.hot { position: absolute; transform: translate(-50%, -50%); z-index: 3; }
.hot .d { width: 26px; height: 26px; border-radius: 50%; border: 1.5px solid var(--cyan-bright); color: var(--cyan-bright); background: rgba(7,11,10,.72); backdrop-filter: blur(3px); display: grid; place-items: center; font-family: var(--mono); font-size: 12px; font-weight: 600; cursor: default; box-shadow: 0 2px 12px rgba(0,0,0,.4); transition: transform .2s ease, background .2s ease, color .2s ease; }
.hot .d::after { content: ""; position: absolute; inset: -7px; border-radius: 50%; border: 1px solid var(--cyan-bright); opacity: 0; animation: hotPulse 2.6s ease-out infinite; }
@keyframes hotPulse { 0% { transform: scale(.7); opacity: .55; } 100% { transform: scale(1.7); opacity: 0; } }
.hot.active .d, .board-legend li:hover ~ .nope { } /* placeholder */
.hot.active .d { background: var(--cyan-bright); color: #042; transform: scale(1.15); }
.board-legend { list-style: none; display: flex; flex-direction: column; gap: 2px; }
.board-legend li { display: flex; gap: 14px; align-items: flex-start; padding: 13px 14px; border-radius: 10px; cursor: default; transition: background .2s ease; border: 1px solid transparent; }
.board-legend li:hover, .board-legend li.active { background: rgba(255,255,255,.06); border-color: rgba(255,255,255,.12); }
.board-legend .ln { font-family: var(--mono); font-size: 12px; font-weight: 600; color: var(--cyan-bright); width: 22px; height: 22px; flex: none; border: 1px solid rgba(255,255,255,.18); border-radius: 6px; display: grid; place-items: center; margin-top: 1px; }
.board-legend .lt { font-weight: 500; font-size: 15px; letter-spacing: -0.01em; color: #eef5f3; }
.board-legend .ld { font-family: var(--mono); font-size: 11.5px; color: rgba(255,255,255,.55); margin-top: 2px; }
.board-foot { position: relative; z-index: 1; margin-top: 26px; padding-top: 18px; border-top: 1px solid rgba(255,255,255,.1); display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; font-family: var(--mono); font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; color: rgba(255,255,255,.4); }

/* device showcase: particle field + animated LED ring */
.spec-stage { position: relative; }
.spec-stage #device-field { position: absolute; inset: 0; z-index: 0; }
.device-shot { position: relative; width: 78%; margin: 0 auto; z-index: 1; }
.device-shot img { width: 100%; mix-blend-mode: screen; }
.led-ring { position: absolute; left: 50%; top: 53.5%; width: 30%; height: 7%; transform: translate(-50%, -50%); border-radius: 50%; background: radial-gradient(ellipse, rgba(31,214,230,.95) 0%, rgba(31,214,230,.4) 45%, rgba(31,214,230,0) 72%); filter: blur(5px); pointer-events: none; animation: ledPulse 3.6s ease-in-out infinite; }
@keyframes ledPulse { 0%, 100% { opacity: .4; filter: blur(7px); } 50% { opacity: 1; filter: blur(3px); } }

/* CTA particle field */
.cta #cta-field { position: absolute; inset: 0; z-index: 1; opacity: .9; }
.cta-inner { position: relative; z-index: 2; }

@media (max-width: 980px) {
  .breathe-grid { grid-template-columns: 1fr; gap: 40px; }
  .breath-stage { max-width: 440px; margin: 0 auto; width: 100%; }
  .board-layout { grid-template-columns: 1fr; gap: 30px; }
}
@media (max-width: 620px) {
  .vitals { grid-template-columns: 1fr 1fr; }
  .hot .d { width: 22px; height: 22px; font-size: 10px; }
}