/* Kairo Exchange — design tokens, base components, landing page.
   Direction: pure black, one loud accent (lemon), flat surfaces, big type. */
:root {
  --bg: #000000;
  --bg-2: #0A0A0A;
  --surface: #111111;
  --surface-2: #1A1A1A;
  --surface-3: #232323;
  --line: rgba(255, 255, 255, .08);
  --line-2: rgba(255, 255, 255, .14);
  --text: #F4F4EF;
  --muted: #A1A19A;
  --dim: #66665F;
  --lemon: #DFFF3F;
  --lemon-2: #F0FF8A;
  --lemon-ink: #0A0A0A;
  --lemon-soft: rgba(223, 255, 63, .1);
  --up: #DFFF3F;
  --down: #FF5A36;
  --down-soft: rgba(255, 90, 54, .12);
  --radius: 16px;
  --radius-sm: 10px;
  --sans: "Geist", "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "Geist Mono", ui-monospace, "Cascadia Mono", Consolas, monospace;
  --display: var(--sans);
  --body: var(--sans);
  /* legacy aliases used by older markup */
  --mint: var(--lemon);
  --violet: var(--lemon);
  --grad: var(--lemon);
  color-scheme: dark;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; scroll-padding-top: 100px; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.55 var(--sans);
  -webkit-font-smoothing: antialiased;
  font-feature-settings: "ss01", "tnum";
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; cursor: pointer; border: 0; background: none; }
h1, h2, h3 { font-family: var(--sans); font-weight: 600; letter-spacing: -.035em; margin: 0; }
::selection { background: var(--lemon); color: var(--lemon-ink); }
:focus-visible { outline: 2px solid var(--lemon); outline-offset: 2px; border-radius: 6px; }

.wrap { width: 100%; max-width: 1240px; margin: 0 auto; padding-inline: 24px; }
.grad, .hl { color: var(--lemon); }
.up { color: var(--up); }
.down { color: var(--down); }
.bg-grid, .bg-glow { display: none; }

/* Buttons: pills, flat */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 48px; padding: 0 24px; border-radius: 999px;
  font-weight: 600; font-size: 15px; white-space: nowrap; letter-spacing: -.01em;
  transition: background .15s, color .15s, border-color .15s, transform .12s;
}
.btn:active { transform: scale(.97); }
.btn-sm { height: 38px; padding: 0 18px; font-size: 14px; }
.btn-primary { background: var(--lemon); color: var(--lemon-ink); }
.btn-primary:hover { background: var(--lemon-2); }
.btn-ghost { border: 1px solid var(--line-2); color: var(--text); }
.btn-ghost:hover { border-color: var(--text); }
.btn-ghost:disabled { opacity: .45; cursor: not-allowed; }
.btn-dark { background: var(--lemon-ink); color: var(--lemon); }
.btn-dark:hover { background: #1d1d1d; }
.btn-long { background: var(--lemon); color: var(--lemon-ink); flex: 1; }
.btn-short { background: var(--down); color: #140400; flex: 1; }

/* Nav */
.nav {
  position: sticky; top: 0; z-index: 50;
  padding-top: env(safe-area-inset-top, 0px);
  background: rgba(0, 0, 0, .82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.nav-inner { display: flex; align-items: center; gap: 32px; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 17px; letter-spacing: -.02em; }
.brand img { border-radius: 9px; }
.nav-links { display: flex; gap: 2px; margin-right: auto; }
.nav-links a { position: relative; padding: 8px 12px; color: var(--muted); font-size: 14.5px; font-weight: 500; transition: color .15s; }
.nav-links a:hover { color: var(--text); }
.nav-cta { display: flex; align-items: center; gap: 12px; }
.net-pill {
  display: inline-flex; align-items: center; gap: 8px; height: 30px; padding: 0 12px;
  border-radius: 99px; background: var(--surface); font: 500 12px var(--mono); color: var(--muted);
}
.net-pill i, .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--lemon); display: inline-block; animation: pulse 2s infinite; }
@keyframes pulse { 50% { opacity: .3; } }
.menu-btn { display: none; width: 40px; height: 40px; border-radius: 99px; background: var(--surface); flex-direction: column; justify-content: center; align-items: center; gap: 5px; }
.menu-btn span { width: 16px; height: 1.5px; background: var(--text); transition: transform .2s; }
.menu-btn[aria-expanded="true"] span:first-child { transform: translateY(3.25px) rotate(45deg); }
.menu-btn[aria-expanded="true"] span:last-child { transform: translateY(-3.25px) rotate(-45deg); }

/* Ticker */
.ticker { overflow: hidden; border-top: 1px solid var(--line); height: 32px; }
.ticker-track { display: flex; gap: 32px; width: max-content; height: 100%; align-items: center; animation: scroll 60s linear infinite; font: 500 12.5px var(--mono); }
.ticker:hover .ticker-track { animation-play-state: paused; }
.ticker-track span, .ticker-track a { display: inline-flex; gap: 8px; color: var(--dim); }
.ticker-track b { color: var(--text); font-weight: 500; }
.ticker-track em { font-style: normal; }
@keyframes scroll { to { transform: translateX(-50%); } }

/* Shared text bits */
.eyebrow { display: inline-flex; align-items: center; gap: 8px; font: 500 12.5px var(--mono); color: var(--muted); text-transform: uppercase; letter-spacing: .06em; }
.fine { color: var(--dim); font-size: 12.5px; margin: 14px 0 0; }
.form-note { font-size: 13px; color: var(--dim); margin: 14px 0 0; }
.table-wrap { overflow-x: auto; border-radius: var(--radius); background: var(--surface); }
.hide-sm { }

/* ---------- Landing ---------- */
.hero { padding-block: 72px 56px; }
.hero-head { max-width: 1180px; }
.hero h1 { font-size: clamp(40px, 6.6vw, 88px); line-height: .96; letter-spacing: -.05em; font-weight: 600; margin: 22px 0 0; }
.hero-sub { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr); gap: 56px; align-items: end; margin-top: 36px; }
.hero-sub .lead { margin: 0; max-width: 600px; font-size: 18.5px; line-height: 1.55; }
.hero-sub .hero-actions { justify-content: flex-end; }
.hero-sub .form-note { text-align: right; }

/* Value pillars under the product shot */
.pillars { display: grid; grid-template-columns: repeat(3, 1fr); margin-top: 56px; border-top: 1px solid var(--line); }
.pillars > div { padding: 28px 32px 4px 0; }
.pillars > div + div { padding-left: 32px; border-left: 1px solid var(--line); }
.pillars span { font: 500 12px var(--mono); color: var(--lemon); text-transform: uppercase; letter-spacing: .06em; }
.pillars h3 { font-size: 22px; letter-spacing: -.035em; margin: 18px 0 10px; }
.pillars p { color: var(--muted); margin: 0; font-size: 15px; }

/* Hero product screenshot */
.shot { position: relative; margin: 64px 0 0; }
.shot-frame { display: block; border-radius: 22px; overflow: hidden; border: 1px solid var(--line-2); background: var(--surface); box-shadow: 0 40px 90px -40px rgba(0, 0, 0, .95); transform-origin: center top; }
.shot-frame img { width: 100%; height: auto; }
.demo-check { width: 30px; height: 30px; border-radius: 50%; display: grid; place-items: center; background: var(--lemon); color: var(--lemon-ink); font-weight: 700; font-size: 15px; flex: none; }
.shot-toast { position: absolute; right: 24px; bottom: 32px; display: flex; align-items: center; gap: 12px; padding: 12px 18px 12px 12px; border-radius: 16px; background: var(--surface-3); border: 1px solid var(--line-2); box-shadow: 0 24px 60px -12px rgba(0, 0, 0, .9); white-space: nowrap; }
.shot-toast b { display: block; font-size: 14px; }
.shot-toast small { color: var(--muted); font-size: 12px; }
.lead { color: var(--muted); font-size: 18px; max-width: 460px; margin: 0 0 28px; }
.hero-actions { display: flex; gap: 10px; flex-wrap: wrap; }

.board { margin-top: 64px; border-top: 1px solid var(--line); }
.board-head { display: flex; justify-content: space-between; align-items: center; padding: 18px 0; }
.board-head h2 { font-size: 15px; font-weight: 500; letter-spacing: -.01em; color: var(--muted); }
.board-rows { display: grid; grid-template-columns: repeat(2, 1fr); column-gap: 48px; }
.brow { display: grid; grid-template-columns: 40px 1fr auto auto; align-items: center; gap: 16px; padding: 16px 0; border-top: 1px solid var(--line); transition: background .15s; }
.brow:hover .brow-tk { color: var(--lemon); }
.brow-tk { font-weight: 600; font-size: 17px; letter-spacing: -.02em; transition: color .15s; }
.brow-tk small { display: block; color: var(--dim); font-size: 13px; font-weight: 400; letter-spacing: 0; }
.brow-px { font: 500 17px var(--mono); }
.chg { display: inline-flex; justify-content: center; min-width: 82px; padding: 6px 10px; border-radius: 99px; font: 600 13px var(--mono); }
.chg.up { background: var(--lemon-soft); color: var(--up); }
.chg.down { background: var(--down-soft); color: var(--down); }

.section { padding-block: 120px 0; }
.sec-head { max-width: 760px; margin-bottom: 48px; }
.sec-head.center { text-align: center; margin-inline: auto; }
.sec-head h2 { font-size: clamp(38px, 5.4vw, 72px); line-height: .95; letter-spacing: -.05em; margin: 16px 0 18px; }
.sec-head p { color: var(--muted); font-size: 17px; margin: 0; max-width: 560px; }

/* How it works */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); }
.step { padding: 28px 28px 8px 0; }
.step + .step { padding-left: 28px; border-left: 1px solid var(--line); }
.step-n { font: 500 13px var(--mono); color: var(--lemon); }
.step h3 { font-size: 26px; margin: 40px 0 10px; letter-spacing: -.04em; }
.step p { color: var(--muted); margin: 0; }

/* Markets table (landing) */
.market-tabs { display: inline-flex; gap: 4px; margin-bottom: 16px; padding: 4px; border-radius: 99px; background: var(--surface); position: relative; }
.market-tabs button { position: relative; z-index: 1; padding: 8px 16px; border-radius: 99px; color: var(--muted); font-size: 14px; font-weight: 500; transition: color .15s; }
.market-tabs button.on { color: var(--lemon-ink); }
.markets { width: 100%; border-collapse: collapse; min-width: 420px; }
.markets th { text-align: left; font: 500 12px var(--mono); color: var(--dim); text-transform: uppercase; letter-spacing: .05em; padding: 16px 22px; border-bottom: 1px solid var(--line); }
.markets td { padding: 16px 22px; border-bottom: 1px solid var(--line); font: 500 15px var(--mono); }
.markets tr:last-child td { border-bottom: 0; }
.markets tbody tr { transition: background .12s; }
.markets tbody tr:hover { background: var(--surface-2); }
.asset { display: flex; align-items: center; gap: 12px; font-family: var(--sans); }
.asset b { display: block; font-weight: 600; font-size: 15px; }
.asset small { color: var(--dim); font-size: 12.5px; font-weight: 400; }
.markets td:last-child { text-align: right; }
.trade-link { display: inline-flex; padding: 8px 16px; border-radius: 99px; background: var(--surface-3); font: 600 13px var(--sans); transition: background .15s, color .15s; }
.trade-link:hover { background: var(--lemon); color: var(--lemon-ink); }

/* Lemon band */
.band { margin-top: 120px; background: var(--lemon); color: var(--lemon-ink); }
.band .wrap { padding-block: 96px; }
.band h2 { font-size: clamp(44px, 8vw, 116px); line-height: .88; letter-spacing: -.06em; max-width: 1000px; }
.band-facts { display: grid; grid-template-columns: repeat(4, 1fr); margin-top: 72px; border-top: 1.5px solid var(--lemon-ink); }
.band-facts div { padding: 20px 20px 0 0; }
.band-facts b { display: block; font-size: clamp(30px, 3.6vw, 48px); letter-spacing: -.05em; font-weight: 600; }
.band-facts span { font-size: 14px; opacity: .7; }

/* Security list */
.rules { border-top: 1px solid var(--line); }
.rule { display: grid; grid-template-columns: 80px 1fr 1.3fr; gap: 24px; padding: 32px 0; border-bottom: 1px solid var(--line); align-items: baseline; }
.rule span { font: 500 13px var(--mono); color: var(--lemon); }
.rule h3 { font-size: 28px; letter-spacing: -.04em; }
.rule p { color: var(--muted); margin: 0; font-size: 16px; }

/* Token */
.token { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; padding: 56px; border-radius: 28px; background: var(--surface); }
.token h2 { font-size: clamp(34px, 4.4vw, 58px); line-height: .95; letter-spacing: -.05em; margin: 16px 0 18px; }
.token-copy > p { color: var(--muted); margin: 0; font-size: 16px; }
.utils { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; margin: 32px 0; background: var(--line); border-radius: 14px; overflow: hidden; }
.utils div { padding: 18px; background: var(--surface); }
.utils b { display: block; font-size: 15px; margin-bottom: 2px; }
.utils span { color: var(--dim); font-size: 13.5px; }
.ca { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 16px 18px; border-radius: 14px; background: var(--bg-2); }
.ca small { display: block; color: var(--dim); font-size: 12px; }
.ca code { font: 500 14px var(--mono); color: var(--text); }
.supply { align-self: center; }
.supply-num { font-size: clamp(64px, 9vw, 120px); font-weight: 600; letter-spacing: -.06em; line-height: .9; }
.supply-num small { font-size: 18px; color: var(--muted); letter-spacing: -.01em; font-weight: 500; margin-left: 8px; }
.stack { display: flex; height: 56px; gap: 3px; margin: 28px 0 22px; }
.stack i { border-radius: 8px; background: var(--c); transform-origin: left; }
.alloc { list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; }
.alloc li { display: flex; align-items: center; gap: 12px; font-size: 14.5px; color: var(--muted); }
.alloc i { width: 12px; height: 12px; border-radius: 4px; background: var(--c); flex: none; }
.alloc b { margin-left: auto; font: 500 14px var(--mono); color: var(--text); }

/* Roadmap */
.road { list-style: none; padding: 0; margin: 0; border-top: 1px solid var(--line); }
.road li { display: grid; grid-template-columns: 160px 1fr 1.3fr; gap: 24px; padding: 28px 0; border-bottom: 1px solid var(--line); align-items: baseline; }
.road span { font: 500 13px var(--mono); color: var(--dim); }
.road li.done span, .road li.now span { color: var(--lemon); }
.road li.done span::before { content: "● "; }
.road h3 { font-size: 24px; letter-spacing: -.035em; }
.road p { color: var(--muted); margin: 0; }

/* FAQ */
.faq { border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary { list-style: none; cursor: pointer; padding: 26px 56px 26px 0; font-size: 19px; font-weight: 500; letter-spacing: -.02em; position: relative; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: ""; position: absolute; right: 4px; top: 50%; width: 14px; height: 14px; margin-top: -7px;
  background: linear-gradient(var(--text), var(--text)) center / 14px 1.5px no-repeat, linear-gradient(var(--text), var(--text)) center / 1.5px 14px no-repeat; transition: transform .25s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { margin: 0; padding: 0 0 26px; color: var(--muted); max-width: 720px; font-size: 16px; }

/* CTA */
.cta { margin-block: 120px 0; padding: 88px 56px; border-radius: 32px; background: var(--lemon); color: var(--lemon-ink); }
.cta h2 { font-size: clamp(44px, 7.5vw, 104px); line-height: .88; letter-spacing: -.06em; }
.cta p { margin: 24px 0 32px; max-width: 460px; font-size: 17px; opacity: .75; }
.cta-btns { display: flex; gap: 10px; flex-wrap: wrap; }

/* Footer */
.footer { margin-top: 120px; border-top: 1px solid var(--line); padding-block: 56px calc(28px + env(safe-area-inset-bottom, 0px)); }
.foot-inner { display: flex; justify-content: space-between; gap: 48px; flex-wrap: wrap; }
.foot-brand p { color: var(--dim); margin: 12px 0 0; font-size: 14px; }
.foot-cols { display: flex; gap: 72px; flex-wrap: wrap; }
.foot-cols div { display: flex; flex-direction: column; gap: 10px; }
.foot-cols b { font-size: 13px; color: var(--dim); font-weight: 500; margin-bottom: 4px; }
.foot-cols a { color: var(--muted); font-size: 14.5px; transition: color .15s; }
.foot-cols a:hover { color: var(--lemon); }
.foot-legal { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-top: 48px; padding-top: 24px; border-top: 1px solid var(--line); color: var(--dim); font-size: 12.5px; }

/* Motion fallback: content is visible unless motion-ui hides it first */
.js-motion [data-reveal], .js-motion [data-intro] { opacity: 0; }
.js-motion .hero h1 .line > span { transform: translateY(105%); }

/* Responsive */
@media (max-width: 1080px) {
  .nav-links a { padding: 8px 9px; }
  .net-pill { display: none; }
}
@media (max-width: 960px) {
  .nav-links {
    position: absolute; top: 100%; left: 0; right: 0; flex-direction: column; gap: 0; padding: 8px 16px 20px;
    background: #000; border-bottom: 1px solid var(--line);
    transform: translateY(-8px); opacity: 0; pointer-events: none; transition: .2s;
  }
  .nav-links.open { transform: none; opacity: 1; pointer-events: auto; }
  .nav-links a { padding: 16px 4px; font-size: 18px; border-bottom: 1px solid var(--line); }
  .nav-inner { justify-content: space-between; }
  .menu-btn { display: flex; }
  .hero-sub { grid-template-columns: 1fr; gap: 28px; }
  .hero-sub .hero-actions { justify-content: flex-start; }
  .hero-sub .form-note { text-align: left; }
  .pillars { grid-template-columns: 1fr; }
  .pillars > div, .pillars > div + div { padding: 24px 0; border-left: 0; border-bottom: 1px solid var(--line); }
  .pillars h3 { margin-top: 12px; }
  .board-rows { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .step, .step + .step { padding: 24px 0; border-left: 0; border-bottom: 1px solid var(--line); }
  .step h3 { margin-top: 16px; }
  .band-facts { grid-template-columns: 1fr 1fr; gap: 24px 0; }
  .rule, .road li { grid-template-columns: 1fr; gap: 8px; }
  .token { grid-template-columns: 1fr; padding: 32px 24px; gap: 40px; }
}
@media (max-width: 600px) {
  .wrap { padding-inline: 16px; }
  .hero { padding-top: 44px; }
  .shot { margin-top: 40px; }
  .shot-frame { border-radius: 14px; }
  .shot-toast { right: 10px; bottom: 10px; padding: 8px 12px 8px 8px; }
  .shot-toast .demo-check { width: 24px; height: 24px; font-size: 12px; }
  .shot-toast b { font-size: 12.5px; }
  .shot-toast small { display: none; }
  .brow { grid-template-columns: 34px 1fr auto; }
  .brow .brow-px { display: none; }
  .hide-sm { display: none; }
  .markets td, .markets th { padding: 14px; }
  .section { padding-top: 88px; }
  .band .wrap { padding-block: 64px; }
  .cta { padding: 56px 24px; border-radius: 24px; }
  .utils { grid-template-columns: 1fr; }
  .foot-cols { gap: 40px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .js-motion [data-reveal], .js-motion [data-intro] { opacity: 1; }
  .js-motion .hero h1 .line > span { transform: none; }
}