/* FOLIO v2: two skins, one markup.
   Default: Dark Precision. body.alt: Swiss Brutalist. */

@import url('https://fonts.googleapis.com/css2?family=Archivo:ital,wght@0,400;0,500;0,600;0,700;0,900;1,400&family=Archivo+Expanded:wght@600;700;800;900&family=IBM+Plex+Mono:wght@400;500;600&display=swap');

:root {
  --bg: #07090c;
  --bg2: #0d1117;
  --card: #11161d;
  --ink: #eef1f4;
  --ink-soft: #aab4bf;
  --ink-faded: #5f6b78;
  --accent: #38e8c6;      /* teal-mint */
  --accent2: #ff5c39;     /* signal orange */
  --line: rgba(238,241,244,0.10);
  --line-strong: rgba(238,241,244,0.22);
  --mono: 'IBM Plex Mono', ui-monospace, monospace;
  --sans: 'Archivo', system-ui, sans-serif;
  --disp: 'Archivo Expanded', 'Archivo', system-ui, sans-serif;
}

body.alt {
  --bg: #f4f4f0;
  --bg2: #ffffff;
  --card: #ffffff;
  --ink: #0c0c0c;
  --ink-soft: #3c3c3c;
  --ink-faded: #8a8a84;
  --accent: #d92500;      /* swiss red */
  --accent2: #0c0c0c;
  --line: rgba(12,12,12,0.14);
  --line-strong: rgba(12,12,12,0.35);
}

/* PAD: engineering-pad skin: cold grid paper, navy ink, teal datum */
body.pad {
  --bg: #eef2f5;
  --bg2: #f7fafb;
  --card: #ffffff;
  --ink: #14202e;
  --ink-soft: #33414f;
  --ink-faded: #6a7682;
  --accent: #0e7c86;
  --accent2: #c8324a;
  --line: rgba(40,90,120,0.16);
  --line-strong: rgba(40,90,120,0.34);
}
body.pad::before {
  content: '';
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background-image:
    repeating-linear-gradient(0deg, transparent 0, transparent 31px, rgba(40,90,120,0.09) 31px, rgba(40,90,120,0.09) 32px),
    repeating-linear-gradient(90deg, transparent 0, transparent 31px, rgba(40,90,120,0.06) 31px, rgba(40,90,120,0.06) 32px);
}
body.pad .hero .scrim {
  background: linear-gradient(180deg, rgba(238,242,245,0) 0%, rgba(238,242,245,0) 55%, rgba(238,242,245,0.96) 100%);
}
body.pad section.blk, body.pad .cta { position: relative; z-index: 1; }

* { box-sizing: border-box; margin: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  transition: background 0.4s, color 0.4s;
}
a { color: inherit; text-decoration: none; }
::selection { background: var(--accent); color: #000; }

/* ───── switcher pill ───── */
.skin-switch {
  position: fixed; top: 14px; left: 50%; transform: translateX(-50%);
  z-index: 999; display: flex; gap: 2px; padding: 4px;
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  backdrop-filter: blur(16px);
  border: 1px solid var(--line-strong); border-radius: 999px;
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.08em;
}
.skin-switch button {
  background: none; border: none; color: var(--ink-faded);
  padding: 6px 14px; border-radius: 999px; cursor: pointer;
  font-family: inherit; font-size: inherit; letter-spacing: inherit;
  transition: all 0.2s;
}
.skin-switch button.on { background: var(--ink); color: var(--bg); font-weight: 600; }

/* scroll progress hairline */
.progress {
  position: fixed; top: 0; left: 0; height: 2px; width: 0;
  background: var(--accent); z-index: 998;
}

/* hero entrance choreography */
@keyframes heroin { from { opacity: 0; transform: translateY(26px); } to { opacity: 1; transform: none; } }
.hero .kicker { animation: heroin 0.8s 0.15s cubic-bezier(0.2,0.7,0.2,1) both; }
.hero h1 { animation: heroin 0.9s 0.3s cubic-bezier(0.2,0.7,0.2,1) both; }
.hero .sub { animation: heroin 0.9s 0.5s cubic-bezier(0.2,0.7,0.2,1) both; }
.hero .statbar { animation: heroin 0.9s 0.7s cubic-bezier(0.2,0.7,0.2,1) both; }

/* ───── nav ───── */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 90;
  display: flex; justify-content: space-between; align-items: center;
  padding: 18px 32px;
  color: #fff; text-shadow: 0 1px 10px rgba(0,0,0,0.55), 0 0 2px rgba(0,0,0,0.4);
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.12em;
  pointer-events: none;
}
nav a, nav .brand { pointer-events: auto; }
nav .links { display: flex; gap: 22px; }
nav a:hover { opacity: 0.6; }

/* ───── hero ───── */
.hero {
  position: relative; min-height: 100svh;
  display: flex; flex-direction: column; justify-content: flex-end;
  overflow: hidden;
}
.hero video {
  position: absolute; inset: 0; width: 100%; height: 100%;
  object-fit: cover; filter: saturate(0.9) contrast(1.03) brightness(0.85);
}
.hero .scrim {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(7,9,12,0.55) 0%, rgba(7,9,12,0.12) 42%, rgba(7,9,12,0.9) 100%);
}
body.alt .hero .scrim {
  background: linear-gradient(180deg, rgba(244,244,240,0.0) 0%, rgba(244,244,240,0.0) 55%, rgba(244,244,240,0.96) 100%);
}
.hero .content {
  position: relative; z-index: 2; padding: 0 32px 40px;
  max-width: 1500px; margin: 0 auto; width: 100%;
}
.hero .kicker {
  font-family: var(--mono); font-size: 12px; letter-spacing: 0.22em;
  color: var(--accent); margin-bottom: 18px; text-transform: uppercase;
  text-shadow: 0 1px 8px rgba(0,0,0,0.55);
}
.hero h1 {
  font-family: var(--disp);
  font-size: clamp(44px, 8.6vw, 150px);
  font-weight: 900; line-height: 0.92; letter-spacing: -0.03em;
  text-transform: uppercase;
  text-shadow: 0 2px 24px rgba(0,0,0,0.35);
}
.hero h1 em { font-style: normal; color: var(--accent); }
.hero .sub {
  margin-top: 22px; max-width: 640px;
  font-size: clamp(15px, 1.4vw, 19px); line-height: 1.55; color: var(--ink-soft);
  text-shadow: 0 1px 10px rgba(0,0,0,0.5);
}
.hero .statbar {
  display: flex; flex-wrap: wrap; gap: 0; margin-top: 36px;
  border-top: 1px solid var(--line-strong);
}
.hero .statbar .s {
  flex: 1 1 160px; padding: 16px 20px 4px 0;
  border-right: 1px solid var(--line); margin-right: 20px;
}
.hero .statbar .s:last-child { border-right: none; }
.hero .statbar .v {
  font-family: var(--disp); font-weight: 800;
  font-size: clamp(22px, 2.6vw, 38px); letter-spacing: -0.02em;
}
.hero .statbar .k {
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.14em;
  color: var(--ink-faded); text-transform: uppercase; margin-top: 6px;
}

/* ───── shared section shell ───── */
section.blk { padding: 110px 32px; border-top: 1px solid var(--line); }
.wrap { max-width: 1500px; margin: 0 auto; }
.eyebrow {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.22em;
  text-transform: uppercase; color: var(--accent); margin-bottom: 22px;
  display: flex; align-items: center; gap: 12px;
}
.eyebrow::after { content: ''; flex: 1; height: 1px; background: var(--line); }
h2.big {
  font-family: var(--disp); font-weight: 900; text-transform: uppercase;
  font-size: clamp(34px, 5vw, 84px); line-height: 0.95; letter-spacing: -0.025em;
  max-width: 1100px;
}
h2.big em { font-style: normal; color: var(--accent); }
.lede {
  margin-top: 26px; max-width: 720px; font-size: 18px; line-height: 1.65;
  color: var(--ink-soft);
}
.lede strong { color: var(--ink); }

/* metric grid */
.metrics { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); margin-top: 48px; }
.metrics .m { background: var(--bg2); padding: 26px 24px; position: relative; overflow: hidden; }
.metrics .m::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: var(--accent); transform: scaleX(0); transform-origin: left;
  transition: transform 0.35s cubic-bezier(0.2,0.7,0.2,1);
}
.metrics .m:hover::before { transform: scaleX(1); }
.metrics .v { font-family: var(--disp); font-weight: 800; font-size: clamp(28px, 3vw, 46px); letter-spacing: -0.02em; color: var(--accent); }
.metrics .v .unit { font-size: 0.5em; color: var(--ink-faded); font-weight: 600; }
.metrics .k { font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-faded); margin-top: 10px; line-height: 1.6; }

/* feature rows */
.rows { margin-top: 56px; border-top: 1px solid var(--line); }
.row {
  display: grid; grid-template-columns: 200px 1fr; gap: 40px;
  padding: 30px 0; border-bottom: 1px solid var(--line);
  transition: background 0.3s, padding-left 0.3s;
}
.row:hover { background: color-mix(in srgb, var(--ink) 3.5%, transparent); padding-left: 10px; }
.row .tag { font-family: var(--mono); font-size: 11px; letter-spacing: 0.14em; color: var(--accent); text-transform: uppercase; padding-top: 4px; }
.row h3 { font-family: var(--sans); font-weight: 700; font-size: 21px; letter-spacing: -0.01em; margin-bottom: 8px; }
.row p { font-size: 15px; line-height: 1.7; color: var(--ink-soft); max-width: 860px; }
.row p code, .lede code {
  font-family: var(--mono); font-size: 0.85em;
  background: color-mix(in srgb, var(--ink) 8%, transparent);
  padding: 2px 6px; border-radius: 3px;
}

/* latency table */
.lat { margin-top: 48px; border: 1px solid var(--line-strong); }
.lat .lr {
  display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr;
  border-bottom: 1px solid var(--line); align-items: center;
}
.lat .lr:last-child { border-bottom: none; }
.lat .lr > div { padding: 16px 20px; }
.lat .lr.head { font-family: var(--mono); font-size: 10px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--ink-faded); background: var(--bg2); }
.lat .name { font-weight: 600; font-size: 15px; }
.lat .was { font-family: var(--mono); color: var(--ink-faded); text-decoration: line-through; }
.lat .now { font-family: var(--disp); font-weight: 800; font-size: 22px; color: var(--accent); }
.lat .gain { font-family: var(--mono); font-size: 12px; color: var(--accent2); }

/* video figure */
.vidfig { margin-top: 56px; border: 1px solid var(--line-strong); position: relative; }
.vidfig video { width: 100%; display: block; }
.vidfig .cap {
  position: absolute; bottom: 0; left: 0; right: 0;
  padding: 14px 20px; font-family: var(--mono); font-size: 10.5px;
  letter-spacing: 0.14em; text-transform: uppercase;
  background: linear-gradient(0deg, rgba(0,0,0,0.75), transparent); color: #fff;
}

/* two-col */
.duo { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; margin-top: 48px; align-items: start; }
@media (max-width: 900px) { .duo { grid-template-columns: 1fr; } .row { grid-template-columns: 1fr; gap: 8px; } }

/* image figure */
.imgfig { border: 1px solid var(--line-strong); }
.imgfig img { width: 100%; display: block; }
.imgfig .cap { padding: 12px 16px; font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-faded); border-top: 1px solid var(--line); }

/* receipts */
.receipts { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; margin-top: 48px; }
@media (max-width: 900px) { .receipts { grid-template-columns: 1fr; } }
.rcpt h3 { font-family: var(--mono); font-size: 11px; letter-spacing: 0.2em; text-transform: uppercase; color: var(--accent); margin-bottom: 18px; }
.rcpt .it { padding: 16px 0; border-top: 1px solid var(--line); }
.rcpt .d { font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.1em; color: var(--ink-faded); }
.rcpt .t { font-weight: 700; font-size: 16px; margin-top: 4px; }
.rcpt .s { font-size: 13.5px; color: var(--ink-soft); margin-top: 3px; line-height: 1.55; }

/* CTA */
.cta { text-align: center; padding: 140px 32px 90px; border-top: 1px solid var(--line); }
.cta h2 {
  font-family: var(--disp); font-weight: 900; text-transform: uppercase;
  font-size: clamp(40px, 7vw, 110px); line-height: 0.92; letter-spacing: -0.03em;
}
.cta h2 em { font-style: normal; color: var(--accent); }
.cta .btns { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-top: 44px; }
.cta .btn {
  font-family: var(--mono); font-size: 13px; letter-spacing: 0.06em;
  padding: 15px 26px; border: 1px solid var(--line-strong);
  transition: all 0.2s;
}
.cta .btn:hover { background: var(--ink); color: var(--bg); }
.cta .btn.primary { background: var(--accent); color: #000; border-color: var(--accent); font-weight: 600; }
.cta .btn.primary:hover { filter: brightness(1.12); }
.cta .foot { margin-top: 70px; font-family: var(--mono); font-size: 10px; letter-spacing: 0.16em; color: var(--ink-faded); text-transform: uppercase; }

/* ───── chat pipeline trace ───── */
.pipe { margin-top: 52px; border: 1px solid var(--line-strong); background: var(--bg2); }
.pipe-bar { display: flex; align-items: center; gap: 7px; padding: 11px 16px; border-bottom: 1px solid var(--line); }
.pipe-bar .dot { width: 10px; height: 10px; border-radius: 50%; background: var(--line-strong); }
.pipe-title { font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--ink-faded); margin-left: 10px; }
.pipe-live { margin-left: auto; font-family: var(--mono); font-size: 10px; letter-spacing: 0.12em; color: var(--accent2); animation: blink 1.4s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0.25; } }
.pipe-body { padding: 20px 22px 26px; font-family: var(--mono); font-size: 13px; line-height: 1.9; min-height: 430px; }
.pl { display: flex; gap: 14px; align-items: baseline; opacity: 0; transform: translateY(6px); animation: plin 0.4s ease forwards; }
@keyframes plin { to { opacity: 1; transform: none; } }
.pl .st {
  flex: 0 0 92px; font-size: 9.5px; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--ink-faded); text-align: right; padding-top: 2px;
}
.pl .tx { flex: 1; color: var(--ink-soft); word-break: break-word; }
.pl.mic .tx { color: var(--ink); }
.pl .ms { flex: 0 0 auto; font-size: 10px; color: var(--accent2); }
.pl .tok { color: var(--ink); }
.pl .tag { color: var(--accent); background: color-mix(in srgb, var(--accent) 12%, transparent); padding: 1px 6px; border-radius: 3px; }
.pl .sys { color: var(--ink-faded); }
.pl .key { color: var(--accent); }
.pl .rag { color: var(--accent2); }
.pl .aud { display: inline-flex; gap: 2px; align-items: flex-end; height: 12px; vertical-align: middle; margin-right: 8px; }
.pl .aud i { width: 3px; background: var(--accent); animation: eq 0.7s ease-in-out infinite alternate; }
.pl .aud i:nth-child(1){height:5px} .pl .aud i:nth-child(2){height:11px; animation-delay:.15s} .pl .aud i:nth-child(3){height:7px; animation-delay:.3s} .pl .aud i:nth-child(4){height:10px; animation-delay:.1s}
@keyframes eq { to { transform: scaleY(0.35); } }
.pl .cur { display: inline-block; width: 7px; height: 13px; background: var(--accent); vertical-align: -2px; animation: blink 0.9s steps(1) infinite; }
@media (prefers-reduced-motion: reduce) { .pl { animation: none; opacity: 1; transform: none; } .pipe-live, .pl .aud i, .pl .cur { animation: none; } }

.rv { opacity: 1; transform: none; }
.rv.pending { opacity: 0; transform: translateY(26px); }
.rv.in { opacity: 1; transform: none; transition: opacity 0.8s ease, transform 0.8s cubic-bezier(0.2,0.7,0.2,1); }

/* marquee */
.marq { overflow: hidden; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); padding: 16px 0; white-space: nowrap; }
.marq .in { display: inline-flex; gap: 48px; font-family: var(--mono); font-size: 12px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--ink-faded); animation: mq 46s linear infinite; }
@keyframes mq { to { transform: translateX(-50%); } }

@media (max-width: 700px) {
  section.blk { padding: 70px 20px; }
  .hero .content { padding: 0 20px 32px; }
  nav { padding: 12px 16px; justify-content: center; }
  nav .brand { display: none; }
  nav .links { display: flex; gap: 15px; font-size: 9.5px; letter-spacing: 0.06em; }
}

/* mobile: comparison table + trace restack so nothing crushes below ~400px */
@media (max-width: 640px) {
  .lat .lr.head { display: none; }
  .lat .lr { grid-template-columns: 1fr 1fr 1fr; }
  .lat .name { grid-column: 1 / -1; padding-bottom: 2px; font-size: 14px; }
  .lat .lr > div { padding: 11px 14px; }
  .lat .now { font-size: 17px; }
  .lat .was, .lat .gain { font-size: 12px; }

  .pipe-body { padding: 16px 14px 20px; font-size: 11.5px; min-height: 320px; }
  .pl { gap: 8px; }
  .pl .st { flex-basis: 54px; font-size: 8.5px; }
  .pl .ms { font-size: 8.5px; }
}
@media (prefers-reduced-motion: reduce) {
  .rv.pending { opacity: 1; transform: none; }
  .marq .in { animation: none; }
  .hero .kicker, .hero h1, .hero .sub, .hero .statbar { animation: none; }
}