/* ==========================================================================
   XFQ Innovation PLT — xfqgso.my
   Design system. Hand-written, no framework, no build step.
   ========================================================================== */

/* --- 1. Reset ----------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
img, svg, video { display: block; max-width: 100%; height: auto; }
button, input, select, textarea { font: inherit; color: inherit; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }

/* --- 2. Tokens ---------------------------------------------------------- */
:root {
  /* Ground */
  --bg:        #08090b;
  --bg-2:      #0b0d11;
  --surface:   #101319;
  --surface-2: #151921;
  --surface-3: #1b2029;

  /* Lines */
  --line:   rgba(255,255,255,.075);
  --line-2: rgba(255,255,255,.14);
  --line-3: rgba(255,255,255,.24);

  /* Ink */
  --fg:   #f1f4f8;
  --fg-2: #99a1ad;
  --fg-3: #646c78;

  /* House accent — phosphor */
  --accent:      #c6f24e;
  --accent-deep: #a8d92c;
  --accent-wash: rgba(198,242,78,.12);
  --accent-line: rgba(198,242,78,.32);

  /* Product identities */
  --gso:   #f5a524;
  --orbit: #7a86ff;
  --sms:   #2dd4bf;

  /* Type */
  --f-sans: "Inter Tight", "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --f-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;

  /* Metrics */
  --wrap: 1180px;
  --gut: 24px;
  --r-sm: 8px;
  --r: 14px;
  --r-lg: 20px;

  color-scheme: dark;
}

/* --- 3. Base ------------------------------------------------------------ */
body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--f-sans);
  font-size: 16px;
  line-height: 1.6;
  letter-spacing: -0.011em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* Faint engineering grid + two soft light sources, fixed behind everything */
body::before {
  content: "";
  position: fixed; inset: 0; z-index: -2;
  background-image:
    linear-gradient(to right, rgba(255,255,255,.026) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,.026) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(ellipse 100% 62% at 50% 0%, #000 30%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 100% 62% at 50% 0%, #000 30%, transparent 78%);
  pointer-events: none;
}
body::after {
  content: "";
  position: fixed; inset: 0; z-index: -3;
  background:
    radial-gradient(760px 420px at 78% -6%,  rgba(198,242,78,.075), transparent 62%),
    radial-gradient(680px 480px at 6%  12%,  rgba(122,134,255,.06), transparent 62%);
  pointer-events: none;
}

::selection { background: var(--accent); color: #0a0b0d; }

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

.skip {
  position: absolute; left: 12px; top: -60px; z-index: 200;
  background: var(--accent); color: #0a0b0d;
  padding: 10px 18px; border-radius: var(--r-sm);
  font-weight: 600; font-size: 14px;
  transition: top .18s;
}
.skip:focus { top: 12px; }

/* --- 4. Layout ---------------------------------------------------------- */
.wrap { width: 100%; max-width: var(--wrap); margin-inline: auto; padding-inline: var(--gut); }
.section { padding: 104px 0; position: relative; }
section[id] { scroll-margin-top: 88px; }
.section--tight { padding: 72px 0; }
.rule { height: 1px; background: var(--line); border: 0; }

/* --- 5. Typography ------------------------------------------------------ */
h1, h2, h3, h4 { font-weight: 600; line-height: 1.1; letter-spacing: -0.03em; }
h1 { font-size: clamp(2.5rem, 6.2vw, 4.25rem); letter-spacing: -0.042em; }
h2 { font-size: clamp(1.85rem, 3.7vw, 2.75rem); letter-spacing: -0.035em; }
h3 { font-size: 1.2rem; letter-spacing: -0.02em; }
p  { color: var(--fg-2); }
strong { color: var(--fg); font-weight: 600; }

.lead { font-size: clamp(1.0625rem, 1.55vw, 1.25rem); line-height: 1.62; color: var(--fg-2); max-width: 62ch; }

.eyebrow {
  font-family: var(--f-mono);
  font-size: .6875rem;
  letter-spacing: .17em;
  text-transform: uppercase;
  color: var(--fg-3);
  display: inline-flex; align-items: center; gap: 10px;
}
.eyebrow::before {
  content: ""; width: 22px; height: 1px; background: var(--accent-line); flex: none;
}
.eyebrow--plain::before { display: none; }

.mono { font-family: var(--f-mono); font-variant-numeric: tabular-nums; }

.sec-head { max-width: 68ch; margin-bottom: 52px; }
.sec-head h2 { margin: 16px 0 18px; }
.sec-num {
  font-family: var(--f-mono); font-size: .6875rem; letter-spacing: .16em;
  color: var(--accent); text-transform: uppercase;
}

/* --- 6. Buttons --------------------------------------------------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  padding: 13px 24px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: .9375rem; font-weight: 600; letter-spacing: -0.01em;
  cursor: pointer; white-space: nowrap;
  transition: background .18s, border-color .18s, color .18s, transform .18s, box-shadow .18s;
}
.btn svg { width: 15px; height: 15px; flex: none; transition: transform .22s; }
.btn:hover svg { transform: translateX(3px); }

.btn--primary { background: var(--fg); color: #0a0b0d; }
.btn--primary:hover { background: #fff; transform: translateY(-1px); box-shadow: 0 10px 30px rgba(0,0,0,.5); }

.btn--accent { background: var(--accent); color: #0a0b0d; }
.btn--accent:hover { background: #d3fa63; transform: translateY(-1px); box-shadow: 0 10px 34px rgba(198,242,78,.24); }

.btn--ghost { border-color: var(--line-2); color: var(--fg); background: transparent; }
.btn--ghost:hover { border-color: var(--line-3); background: rgba(255,255,255,.045); }

.btn--sm { padding: 9px 17px; font-size: .875rem; }

/* --- 7. Header ---------------------------------------------------------- */
.hdr {
  position: sticky; top: 0; z-index: 100;
  border-bottom: 1px solid transparent;
  transition: background .25s, border-color .25s, backdrop-filter .25s;
}
.hdr.is-stuck {
  background: rgba(8,9,11,.78);
  backdrop-filter: blur(14px) saturate(160%);
  -webkit-backdrop-filter: blur(14px) saturate(160%);
  border-bottom-color: var(--line);
}
.hdr__in { display: flex; align-items: center; gap: 16px; height: 68px; }

.brand { display: inline-flex; align-items: center; gap: 11px; flex: none; }
.brand__mark { width: 30px; height: 30px; flex: none; }
.brand__txt { display: flex; flex-direction: column; line-height: 1.06; }
.brand__name { font-size: 1rem; font-weight: 650; letter-spacing: -0.02em; }
.brand__sub {
  font-family: var(--f-mono); font-size: .5625rem; letter-spacing: .19em;
  text-transform: uppercase; color: var(--fg-3);
}

.nav { margin-left: auto; display: flex; align-items: center; gap: 2px; }
.nav a {
  padding: 8px 13px; border-radius: 8px;
  font-size: .90625rem; font-weight: 500; color: var(--fg-2);
  transition: color .16s, background .16s;
}
.nav a:hover { color: var(--fg); background: rgba(255,255,255,.05); }
.nav a[aria-current="page"] { color: var(--fg); }
.hdr__cta { margin-left: 10px; }

.burger {
  display: none; margin-left: auto;
  width: 42px; height: 42px; border: 1px solid var(--line-2); border-radius: 10px;
  background: transparent; cursor: pointer;
  align-items: center; justify-content: center;
}
.burger span { display: block; width: 17px; height: 1.5px; background: var(--fg); position: relative; transition: background .2s; }
.burger span::before, .burger span::after {
  content: ""; position: absolute; left: 0; width: 17px; height: 1.5px; background: var(--fg);
  transition: transform .24s;
}
.burger span::before { top: -5.5px; }
.burger span::after  { top:  5.5px; }
.burger[aria-expanded="true"] span { background: transparent; }
.burger[aria-expanded="true"] span::before { transform: translateY(5.5px) rotate(45deg); }
.burger[aria-expanded="true"] span::after  { transform: translateY(-5.5px) rotate(-45deg); }

.mnav {
  display: none;
  border-top: 1px solid var(--line);
  background: rgba(8,9,11,.97);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  padding: 12px var(--gut) 22px;
}
.mnav.is-open { display: block; }
.mnav a {
  display: block; padding: 13px 4px;
  border-bottom: 1px solid var(--line);
  font-size: 1.0625rem; font-weight: 500;
}
.mnav a:last-of-type { border-bottom: 0; }
.mnav .btn { width: 100%; margin-top: 14px; }

/* --- 8. Hero ------------------------------------------------------------ */
.hero { padding: 92px 0 76px; position: relative; }
.hero__in { max-width: 900px; }
.hero h1 { margin: 22px 0 26px; }
.hero h1 em { font-style: normal; color: var(--accent); }
.hero .lead { max-width: 60ch; }
.hero__cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 38px; }

/* Instrument strip */
.strip {
  display: grid; grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--line);
  border-radius: var(--r);
  background: linear-gradient(180deg, rgba(255,255,255,.028), rgba(255,255,255,.008));
  overflow: hidden;
}
.strip__cell { padding: 22px 24px; border-right: 1px solid var(--line); }
.strip__cell:last-child { border-right: 0; }
.strip__v {
  font-family: var(--f-mono); font-size: 1.6rem; font-weight: 500;
  letter-spacing: -0.03em; color: var(--fg); font-variant-numeric: tabular-nums;
}
.strip__v span { color: var(--accent); }
.strip__k {
  font-family: var(--f-mono); font-size: .625rem; letter-spacing: .15em;
  text-transform: uppercase; color: var(--fg-3); margin-top: 7px;
}

/* --- 9. Platform cards -------------------------------------------------- */
.plats { display: grid; gap: 18px; }
.plat {
  --hue: var(--accent);
  position: relative; display: block;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: linear-gradient(180deg, rgba(255,255,255,.03), rgba(255,255,255,.006));
  padding: 34px;
  overflow: hidden;
  transition: border-color .24s, transform .24s, background .24s;
}
.plat::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(560px 220px at 88% -10%, color-mix(in srgb, var(--hue) 16%, transparent), transparent 66%);
  opacity: 0; transition: opacity .3s;
}
.plat:hover { border-color: color-mix(in srgb, var(--hue) 40%, var(--line)); transform: translateY(-3px); }
.plat:hover::after { opacity: 1; }

.plat__top { display: flex; align-items: flex-start; gap: 16px; }
.plat__ico {
  width: 44px; height: 44px; flex: none;
  border: 1px solid color-mix(in srgb, var(--hue) 32%, transparent);
  border-radius: 12px;
  background: color-mix(in srgb, var(--hue) 11%, transparent);
  color: var(--hue);
  display: grid; place-items: center;
}
.plat__ico svg { width: 21px; height: 21px; }
.plat__ttl { display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; }
.plat__ttl h3 { font-size: 1.4rem; }
.tag {
  font-family: var(--f-mono); font-size: .625rem; letter-spacing: .13em; text-transform: uppercase;
  padding: 4px 9px; border-radius: 999px;
  border: 1px solid color-mix(in srgb, var(--hue) 34%, transparent);
  color: var(--hue);
  background: color-mix(in srgb, var(--hue) 9%, transparent);
  white-space: nowrap;
}
.plat__sum { margin-top: 4px; font-size: .9375rem; }
.plat p { margin-top: 16px; max-width: 68ch; }
/* Body copy, chips and the link align with the card title, not the icon. */
.plat > p, .plat__feats, .plat__go { margin-left: 60px; }
.plat__feats {
  display: flex; flex-wrap: wrap; gap: 8px; margin-top: 22px;
}
.plat__feats li {
  font-family: var(--f-mono); font-size: .6875rem; letter-spacing: .05em;
  color: var(--fg-2);
  border: 1px solid var(--line); border-radius: 7px;
  padding: 6px 10px;
  background: rgba(255,255,255,.02);
}
.plat__go {
  display: inline-flex; align-items: center; gap: 8px; margin-top: 26px;
  font-size: .9375rem; font-weight: 600; color: var(--hue);
}
.plat__go svg { width: 15px; height: 15px; transition: transform .22s; }
.plat:hover .plat__go svg { transform: translateX(4px); }

/* --- 10. Generic cards -------------------------------------------------- */
.grid { display: grid; gap: 18px; }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

.card {
  border: 1px solid var(--line);
  border-radius: var(--r);
  background: linear-gradient(180deg, rgba(255,255,255,.028), rgba(255,255,255,.006));
  padding: 26px;
  transition: border-color .22s, background .22s, transform .22s;
}
.card:hover { border-color: var(--line-2); background: rgba(255,255,255,.038); }
.card h3 { margin-bottom: 9px; font-size: 1.0625rem; }
.card p { font-size: .9375rem; }
.card__ico { color: var(--accent); margin-bottom: 16px; }
.card__ico svg { width: 20px; height: 20px; }

/* Numbered principle rows */
.steps { border-top: 1px solid var(--line); }
.step {
  display: grid; grid-template-columns: 68px 1fr; gap: 24px;
  padding: 28px 0; border-bottom: 1px solid var(--line);
}
.step__n {
  font-family: var(--f-mono); font-size: .75rem; letter-spacing: .1em;
  color: var(--accent); padding-top: 4px;
}
.step h3 { margin-bottom: 8px; }
.step p { max-width: 72ch; font-size: .9375rem; }

/* --- 11. Spec tables ---------------------------------------------------- */
.tbl-wrap {
  border: 1px solid var(--line); border-radius: var(--r);
  overflow-x: auto; background: rgba(255,255,255,.015);
}
table { width: 100%; border-collapse: collapse; min-width: 620px; }
thead th {
  text-align: left; padding: 14px 18px;
  font-family: var(--f-mono); font-size: .625rem; letter-spacing: .15em;
  text-transform: uppercase; color: var(--fg-3); font-weight: 500;
  border-bottom: 1px solid var(--line);
  background: rgba(255,255,255,.022);
  white-space: nowrap;
}
tbody td {
  padding: 15px 18px; border-bottom: 1px solid var(--line);
  font-size: .875rem; color: var(--fg-2); vertical-align: top;
}
tbody tr:last-child td { border-bottom: 0; }
tbody tr:hover td { background: rgba(255,255,255,.018); }
td code, .code {
  font-family: var(--f-mono); font-size: .8125rem;
  color: var(--accent); background: var(--accent-wash);
  padding: 2px 7px; border-radius: 5px; white-space: nowrap;
}
td strong { color: var(--fg); }

/* --- 12. Feature list --------------------------------------------------- */
.flist { display: grid; gap: 2px; }
.flist li {
  display: grid; grid-template-columns: 20px 1fr; gap: 13px;
  padding: 11px 0; border-bottom: 1px solid var(--line);
  font-size: .9375rem; color: var(--fg-2);
}
.flist li:last-child { border-bottom: 0; }
.flist svg { width: 15px; height: 15px; margin-top: 5px; color: var(--accent); }
.flist b { color: var(--fg); font-weight: 600; }

/* --- 13. Diagram -------------------------------------------------------- */
.diagram {
  border: 1px solid var(--line); border-radius: var(--r);
  background:
    linear-gradient(180deg, rgba(255,255,255,.022), rgba(255,255,255,.004));
  padding: 30px 22px;
  overflow-x: auto;
}
.diagram svg { min-width: 640px; margin-inline: auto; }
.diagram figcaption {
  margin-top: 18px; font-size: .8125rem; color: var(--fg-3); text-align: center;
}

/* --- 14. Quote / callout ------------------------------------------------ */
.note {
  border-left: 2px solid var(--accent-line);
  background: linear-gradient(90deg, var(--accent-wash), transparent 72%);
  padding: 18px 22px; border-radius: 0 var(--r-sm) var(--r-sm) 0;
  font-size: .9375rem; color: var(--fg-2);
}

/* --- 15. CTA band ------------------------------------------------------- */
.cta {
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background:
    radial-gradient(620px 300px at 82% 0%, rgba(198,242,78,.11), transparent 64%),
    linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,.01));
  padding: 58px 44px;
  text-align: center;
}
.cta h2 { max-width: 20ch; margin: 14px auto 16px; }
.cta p { max-width: 56ch; margin-inline: auto; }
.cta__btns { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; margin-top: 30px; }

/* --- 16. Footer --------------------------------------------------------- */
.ftr { border-top: 1px solid var(--line); padding: 62px 0 40px; margin-top: 40px; }
.ftr__top { display: grid; grid-template-columns: 1.5fr repeat(3, 1fr); gap: 40px; }
.ftr__blurb { font-size: .875rem; margin-top: 16px; max-width: 34ch; }
.ftr h4 {
  font-family: var(--f-mono); font-size: .625rem; letter-spacing: .15em;
  text-transform: uppercase; color: var(--fg-3); font-weight: 500; margin-bottom: 14px;
}
.ftr__col a, .ftr__col li {
  display: block; font-size: .875rem; color: var(--fg-2); padding: 5px 0;
  transition: color .16s;
}
.ftr__col a:hover { color: var(--accent); }
.ftr__btm {
  display: flex; flex-wrap: wrap; gap: 12px; justify-content: space-between;
  align-items: center; margin-top: 48px; padding-top: 24px;
  border-top: 1px solid var(--line);
  font-size: .8125rem; color: var(--fg-3);
}

/* --- 17. Page hero (inner pages) ---------------------------------------- */
.phero { padding: 78px 0 56px; border-bottom: 1px solid var(--line); }
.phero__meta { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.phero h1 { font-size: clamp(2.1rem, 4.8vw, 3.4rem); margin: 20px 0 22px; }
.phero .lead { max-width: 66ch; }
.crumbs { font-family: var(--f-mono); font-size: .6875rem; letter-spacing: .12em; text-transform: uppercase; color: var(--fg-3); margin-bottom: 24px; }
.crumbs a { color: var(--fg-3); }
.crumbs a:hover { color: var(--accent); }
.crumbs span { margin: 0 8px; opacity: .45; }

/* --- 18. Contact -------------------------------------------------------- */
.mailcard {
  border: 1px solid var(--line-2); border-radius: var(--r-lg);
  background: linear-gradient(180deg, rgba(255,255,255,.045), rgba(255,255,255,.01));
  padding: 40px; text-align: center;
}
.mailcard a.mail {
  display: inline-block; margin: 18px 0 6px;
  font-family: var(--f-mono);
  font-size: clamp(1.05rem, 3.1vw, 1.65rem);
  color: var(--accent); letter-spacing: -0.02em;
  border-bottom: 1px solid var(--accent-line);
  padding-bottom: 4px;
  transition: border-color .2s;
}
.mailcard a.mail:hover { border-bottom-color: var(--accent); }

/* --- 19. Reveal animation ----------------------------------------------- */
.rv { opacity: 0; transform: translateY(16px); transition: opacity .6s cubic-bezier(.22,.61,.36,1), transform .6s cubic-bezier(.22,.61,.36,1); }
.rv.in { opacity: 1; transform: none; }

/* --- 20. Responsive ----------------------------------------------------- */
@media (max-width: 1000px) {
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .ftr__top { grid-template-columns: 1fr 1fr; gap: 34px; }
}
@media (max-width: 860px) {
  .nav, .hdr__cta { display: none; }
  .burger { display: flex; }
  .strip { grid-template-columns: 1fr 1fr; }
  .strip__cell:nth-child(2n) { border-right: 0; }
  .strip__cell:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .grid--3, .grid--2 { grid-template-columns: 1fr; }
  .section { padding: 76px 0; }
  .hero { padding: 64px 0 56px; }
  .plat { padding: 26px 22px; }
  .plat > p, .plat__feats, .plat__go { margin-left: 0; }
  /* Stack the icon above the title so the whole card shares one left edge. */
  .plat__top { display: block; }
  .plat__ico { margin-bottom: 16px; }
  .cta { padding: 44px 26px; }
  .step { grid-template-columns: 1fr; gap: 10px; }
  .step__n { padding-top: 0; }
}
@media (max-width: 560px) {
  :root { --gut: 18px; }
  .grid--4 { grid-template-columns: 1fr; }
  .ftr__top { grid-template-columns: 1fr; }
  .btn { width: 100%; }
  .hero__cta .btn, .cta__btns .btn { width: 100%; }
  .mailcard { padding: 28px 20px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    transition-duration: .001ms !important;
  }
  .rv { opacity: 1; transform: none; }
}

@media print {
  body::before, body::after, .hdr, .mnav, .cta { display: none !important; }
  body { background: #fff; color: #000; }
}