/* OneInfinity: brand tokens from the v1 brand kit */
:root {
  color-scheme: dark;
  --deep-sound: #0B1020;
  --void: #070B16;
  --night-panel: #141B32;
  --panel: #0E1427;
  --line: #1F2742;
  --line-strong: #2A3456;
  --frost: #E8ECF6;
  --text: #C3CADB;
  --muted: #8E97AD;
  --cobalt: #3355FF;
  --cobalt-hover: #4A69FF;
  --cyan: #2EE6D6;
  --ember: #FF6B3D;
  --grad: linear-gradient(90deg, #3355FF, #2EE6D6);

  --display: "Geist", "Helvetica Neue", Arial, sans-serif;
  --body: "IBM Plex Sans", "Segoe UI", Roboto, Arial, sans-serif;
  --mono: "Geist Mono", ui-monospace, "SFMono-Regular", Consolas, monospace;

  --radius: 12px;
  --gutter: 24px;
  --max: 1160px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
  margin: 0;
  background: var(--void);
  color: var(--text);
  font: 400 16px/1.65 var(--body);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img, svg { max-width: 100%; }
a { color: inherit; }
h1, h2, h3 { font-family: var(--display); color: var(--frost); margin: 0; text-wrap: balance; }
h2 { font-size: clamp(30px, 4.2vw, 46px); font-weight: 600; line-height: 1.06; letter-spacing: -0.035em; }
h3 { font-size: 19px; font-weight: 600; line-height: 1.3; letter-spacing: -0.015em; }
p { margin: 0; }
:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; border-radius: 4px; }

.container { width: 100%; max-width: var(--max); margin: 0 auto; padding-inline: var(--gutter); }
.narrow { max-width: 820px; }
@media (max-width: 600px) { :root { --gutter: 16px; } }

.skip { position: absolute; left: 16px; top: -60px; background: var(--cobalt); color: #fff; padding: 10px 14px; border-radius: 8px; z-index: 100; text-decoration: none; }
.skip:focus { top: 12px; }

.label { font: 500 12px/1.2 var(--mono); letter-spacing: .14em; text-transform: uppercase; color: var(--muted); }
.label-accent { color: var(--cyan); }
.body-lg { font-size: 18px; line-height: 1.6; color: var(--text); }
.fine { font: 400 12.5px/1.5 var(--mono); color: #6E7892; }
.mono { font-family: var(--mono); }
.grad { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font: 500 15px/1 var(--display); letter-spacing: -0.005em;
  padding: 13px 18px; border-radius: 10px; border: 1px solid transparent;
  text-decoration: none; cursor: pointer; white-space: nowrap;
  transition: background-color .15s, border-color .15s, transform .15s;
}
.btn-primary { background: var(--cobalt); color: #fff; box-shadow: 0 8px 24px -10px rgba(51, 85, 255, .7); }
.btn-primary:hover { background: var(--cobalt-hover); }
.btn-ghost { background: transparent; color: var(--frost); border-color: var(--line-strong); }
.btn-ghost:hover { border-color: #3D4A78; background: rgba(255, 255, 255, .03); }
.btn-sm { padding: 10px 14px; font-size: 14px; }
.btn-lg { padding: 15px 22px; font-size: 16px; }
.btn-block { width: 100%; }
.btn:active { transform: translateY(1px); }
.cta-row { display: flex; flex-wrap: wrap; gap: 12px; }
.text-link { font: 500 15px/1.4 var(--display); color: var(--cyan); text-decoration: none; }
.text-link:hover { text-decoration: underline; text-underline-offset: 3px; }

/* Nav */
.nav {
  position: sticky; top: 0; z-index: 50;
  padding-top: env(safe-area-inset-top, 0px);
  background: rgba(7, 11, 22, .78);
  backdrop-filter: saturate(140%) blur(14px);
  -webkit-backdrop-filter: saturate(140%) blur(14px);
  border-bottom: 1px solid rgba(31, 39, 66, .7);
}
.nav-inner { display: flex; align-items: center; gap: 28px; height: 68px; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; }
.brand-mark { width: 44px; height: 22px; flex: none; }
.brand-word { font: 600 19px/1 var(--display); letter-spacing: -0.03em; color: #fff; }
.brand-word span { font-weight: 400; }
.nav-links { display: flex; gap: 26px; margin-left: auto; font-size: 14.5px; }
.nav-links a { color: var(--muted); text-decoration: none; transition: color .15s; }
.nav-links a:hover { color: var(--frost); }
.nav-toggle { display: none; margin-left: auto; width: 42px; height: 42px; border-radius: 10px; border: 1px solid var(--line-strong); background: transparent; cursor: pointer; flex-direction: column; justify-content: center; align-items: center; gap: 6px; }
.nav-toggle span { display: block; width: 18px; height: 1.5px; background: var(--frost); transition: transform .2s; }
.nav-toggle[aria-expanded="true"] span:first-child { transform: translateY(3.75px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:last-child { transform: translateY(-3.75px) rotate(-45deg); }
.mobile-menu[hidden] { display: none; }
.mobile-menu { display: grid; gap: 4px; padding: 8px var(--gutter) 20px; border-top: 1px solid var(--line); }
.mobile-menu a:not(.btn) { padding: 12px 0; color: var(--frost); text-decoration: none; border-bottom: 1px solid var(--line); font-size: 16px; }
.mobile-menu .btn { margin-top: 12px; }
@media (max-width: 880px) {
  .nav-links, .nav-inner > .btn { display: none; }
  .nav-toggle { display: inline-flex; }
}
@media (min-width: 881px) { .mobile-menu { display: none !important; } }

/* Hero */
.hero { position: relative; overflow: hidden; border-bottom: 1px solid var(--line); background:
  radial-gradient(60% 80% at 85% 20%, rgba(51, 85, 255, .16), transparent 70%),
  radial-gradient(40% 60% at 95% 80%, rgba(46, 230, 214, .08), transparent 70%),
  var(--void); }
.hero::before { content: ""; position: absolute; inset: 0; background-image:
  linear-gradient(rgba(255,255,255,.028) 1px, transparent 1px),
  linear-gradient(90deg, rgba(255,255,255,.028) 1px, transparent 1px);
  background-size: 56px 56px; mask-image: linear-gradient(180deg, #000 30%, transparent 95%); -webkit-mask-image: linear-gradient(180deg, #000 30%, transparent 95%); pointer-events: none; }
.hero-art { position: absolute; right: -6%; top: 50%; transform: translateY(-46%); width: min(760px, 70vw); height: auto; opacity: .75; pointer-events: none; }
.hero-art .trace { stroke-dasharray: 100; stroke-dashoffset: 100; animation: trace 2.4s cubic-bezier(.6, 0, .2, 1) .2s forwards; }
@keyframes trace { to { stroke-dashoffset: 0; } }
.hero-inner { position: relative; padding-block: 112px 104px; display: grid; gap: 26px; justify-items: start; }
.eyebrow { display: inline-flex; align-items: center; gap: 10px; font: 500 12.5px/1.4 var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--cyan); }
.eyebrow i { width: 6px; height: 6px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 12px var(--cyan); flex: none; }
.hero h1 { font-size: clamp(42px, 7.2vw, 88px); font-weight: 600; line-height: .98; letter-spacing: -0.05em; max-width: 13ch; }
.lede { font-size: clamp(17px, 1.6vw, 19.5px); line-height: 1.6; color: #AEB6CB; max-width: 58ch; }
@media (max-width: 700px) {
  .hero-inner { padding-block: 72px 72px; }
  .hero-art { width: 120vw; right: -45%; top: 18%; opacity: .35; }
  .cta-row .btn-lg { width: 100%; }
}

/* Sections */
.section { padding-block: 112px; border-bottom: 1px solid var(--line); }
@media (max-width: 700px) { .section { padding-block: 72px; } }
.section-head { display: grid; gap: 14px; max-width: 760px; margin-bottom: 52px; }
.problem .narrow { display: grid; gap: 20px; }
.problem h2 { max-width: 20ch; }

.grid-benefits { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: 16px; overflow: hidden; }
@media (max-width: 960px) { .grid-benefits { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 620px) { .grid-benefits { grid-template-columns: 1fr; } }
.benefit { background: var(--panel); padding: 32px 28px; display: grid; gap: 12px; align-content: start; transition: background-color .2s; }
.benefit:hover { background: #111831; }
.benefit p { color: var(--muted); font-size: 15.5px; }
.icon { width: 26px; height: 26px; fill: none; stroke: var(--cyan); stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; margin-bottom: 6px; }

/* Agent */
.agent { background: linear-gradient(180deg, var(--void), var(--deep-sound)); }
.agent-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 64px; align-items: center; }
@media (max-width: 960px) { .agent-grid { grid-template-columns: 1fr; gap: 48px; } }
.agent-copy { display: grid; gap: 22px; justify-items: start; }
.checks { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.checks li { position: relative; padding-left: 28px; }
.checks li::before { content: ""; position: absolute; left: 2px; top: .5em; width: 12px; height: 7px; border-left: 1.8px solid var(--cyan); border-bottom: 1.8px solid var(--cyan); transform: rotate(-45deg); }

.queue { background: var(--panel); border: 1px solid var(--line-strong); border-radius: 18px; padding: 18px; display: grid; gap: 12px; box-shadow: 0 40px 80px -40px rgba(51, 85, 255, .35), 0 0 0 1px rgba(255,255,255,.02) inset; position: relative; }
.queue-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 4px 6px 8px; flex-wrap: wrap; }
.queue-title { font: 600 15px/1 var(--display); color: var(--frost); }
.pill { display: inline-flex; align-items: center; gap: 7px; font: 500 11.5px/1 var(--mono); letter-spacing: .04em; padding: 6px 9px; border-radius: 99px; background: rgba(51, 85, 255, .14); color: #9DB0FF; white-space: nowrap; }
.pill-live { background: rgba(46, 230, 214, .1); color: var(--cyan); }
.pill-live i { width: 6px; height: 6px; border-radius: 50%; background: var(--cyan); animation: pulse 1.8s ease-in-out infinite; }
.pill-muted { background: rgba(142, 151, 173, .12); color: var(--muted); }
@keyframes pulse { 50% { opacity: .35; } }
.queue-item { background: var(--night-panel); border: 1px solid var(--line); border-radius: 12px; padding: 16px; display: grid; gap: 8px; }
.queue-item.dim { background: transparent; }
.queue-item.dim .qi-from { color: var(--muted); }
.qi-top { display: flex; justify-content: space-between; align-items: center; gap: 10px; flex-wrap: wrap; }
.qi-from { font: 600 14.5px/1.3 var(--display); color: var(--frost); }
.qi-sub { font-size: 14px; color: var(--muted); }
.qi-draft { font-size: 14px; color: var(--text); border-left: 2px solid var(--cobalt); padding-left: 12px; }
.qi-actions { display: flex; gap: 8px; margin-top: 4px; flex-wrap: wrap; }
.qa { font: 500 12.5px/1 var(--display); padding: 8px 11px; border-radius: 7px; border: 1px solid var(--line-strong); color: var(--text); }
.qa-ok { background: var(--cobalt); border-color: var(--cobalt); color: #fff; }
.queue-note { font: 400 11px/1 var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--muted); text-align: right; padding: 2px 6px 0; }

/* Audiences */
.grid-two { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
@media (max-width: 820px) { .grid-two { grid-template-columns: 1fr; } }
.aud { border: 1px solid var(--line); border-radius: 16px; padding: 32px; display: grid; gap: 16px; align-content: start; background: var(--panel); }
.aud h3 { font-size: 24px; letter-spacing: -0.025em; }
.aud .checks { font-size: 15.5px; margin-bottom: 6px; }

/* Steps */
.steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; counter-reset: step; }
@media (max-width: 960px) { .steps { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .steps { grid-template-columns: 1fr; } }
.steps li { display: grid; gap: 10px; align-content: start; padding-top: 18px; border-top: 1px solid var(--line-strong); position: relative; }
.steps li::before { counter-increment: step; content: "0" counter(step); font: 500 12px/1 var(--mono); letter-spacing: .12em; color: var(--cyan); }
.steps li::after { content: ""; position: absolute; top: -1px; left: 0; width: 40px; height: 1px; background: var(--grad); }
.steps p { color: var(--muted); font-size: 15px; }

/* About */
.about-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 64px; }
@media (max-width: 880px) { .about-grid { grid-template-columns: 1fr; gap: 28px; } }
.about-grid > div:first-child { display: grid; gap: 14px; align-content: start; }
.about-copy { display: grid; gap: 20px; }
.about-copy > p:not(.body-lg) { color: var(--muted); }
.principles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; margin: 12px 0 0; background: var(--line); border: 1px solid var(--line); border-radius: 12px; overflow: hidden; }
@media (max-width: 560px) { .principles { grid-template-columns: 1fr; } }
.principles div { background: var(--panel); padding: 18px; display: grid; gap: 4px; }
.principles dt { font: 600 15px/1.3 var(--display); color: var(--frost); }
.principles dd { margin: 0; font-size: 14px; color: var(--muted); }

/* FAQ */
.faq { border-top: 1px solid var(--line-strong); }
.faq details { border-bottom: 1px solid var(--line-strong); }
.faq summary { list-style: none; cursor: pointer; display: flex; justify-content: space-between; align-items: center; gap: 16px; padding: 22px 0; font: 500 18px/1.35 var(--display); letter-spacing: -0.015em; color: var(--frost); }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font: 400 22px/1 var(--mono); color: var(--cyan); transition: transform .2s; flex: none; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { padding: 0 0 22px; color: var(--muted); max-width: 64ch; }

/* Book */
.book { position: relative; overflow: hidden; background: radial-gradient(50% 70% at 10% 100%, rgba(51, 85, 255, .14), transparent 70%), var(--deep-sound); }
.book-art { position: absolute; left: -120px; bottom: -80px; width: 520px; height: 260px; opacity: .08; pointer-events: none; }
.book-grid { position: relative; display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: start; }
@media (max-width: 960px) { .book-grid { grid-template-columns: 1fr; gap: 44px; } }
.book-copy { display: grid; gap: 22px; }
.book-copy h2 { font-size: clamp(32px, 4.6vw, 52px); max-width: 16ch; }
.contact { display: grid; gap: 10px; margin-top: 14px; padding-top: 22px; border-top: 1px solid var(--line); }
.email-row { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.email { font: 500 clamp(16px, 2vw, 19px)/1.3 var(--display); color: var(--frost); text-decoration: none; word-break: break-all; }
.email:hover { color: var(--cyan); }
.copy-btn { font: 500 12.5px/1 var(--mono); padding: 8px 11px; border-radius: 7px; border: 1px solid var(--line-strong); background: transparent; color: var(--text); cursor: pointer; }
.copy-btn:hover { border-color: var(--cyan); color: var(--cyan); }

.book-form { background: var(--panel); border: 1px solid var(--line-strong); border-radius: 18px; padding: 28px; display: grid; gap: 18px; box-shadow: 0 40px 80px -48px rgba(0, 0, 0, .8); }
@media (max-width: 560px) { .book-form { padding: 20px; } }
.form-head { display: grid; gap: 6px; }
.form-head p { font-size: 14.5px; color: var(--muted); }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
@media (max-width: 520px) { .field-row { grid-template-columns: 1fr; } }
.field { display: grid; gap: 7px; }
.field label { font: 500 13.5px/1.2 var(--display); color: var(--frost); }
.opt { font: 400 11.5px/1 var(--mono); color: var(--muted); margin-left: 6px; }
input, select, textarea {
  width: 100%; font: 400 15px/1.4 var(--body); color: var(--frost);
  background: var(--void); border: 1px solid var(--line-strong); border-radius: 9px;
  padding: 11px 12px; transition: border-color .15s, box-shadow .15s;
}
textarea { resize: vertical; min-height: 84px; }
select { appearance: none; -webkit-appearance: none; padding-right: 36px; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1.5 6 6.5l5-5' fill='none' stroke='%238E97AD' stroke-width='1.6'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 12px center; }
input::placeholder, textarea::placeholder { color: #5D6782; }
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--cobalt); box-shadow: 0 0 0 3px rgba(51, 85, 255, .25); }
input[aria-invalid="true"], select[aria-invalid="true"] { border-color: var(--ember); }
input[type="date"]::-webkit-calendar-picker-indicator { filter: invert(.7); cursor: pointer; }
.form-error { font-size: 14px; color: #FF9A7A; background: rgba(255, 107, 61, .08); border: 1px solid rgba(255, 107, 61, .3); border-radius: 9px; padding: 10px 12px; }
.form-note { font: 400 12px/1.5 var(--mono); color: var(--muted); text-align: center; }
.form-success { font-size: 14.5px; color: var(--cyan); background: rgba(46, 230, 214, .07); border: 1px solid rgba(46, 230, 214, .25); border-radius: 9px; padding: 12px 14px; }

/* Footer */
.footer { background: var(--void); padding-block: 56px calc(32px + env(safe-area-inset-bottom, 0px)); }
.footer-inner { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 32px; padding-bottom: 36px; }
.footer-brand { display: grid; gap: 14px; max-width: 340px; }
.footer-brand p { font-size: 14.5px; color: var(--muted); }
.footer-links { display: flex; flex-wrap: wrap; gap: 12px 28px; font-size: 14.5px; }
.footer-links a { color: var(--muted); text-decoration: none; }
.footer-links a:hover { color: var(--frost); }
.footer-base { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; padding-top: 22px; border-top: 1px solid var(--line); font: 400 12.5px/1.5 var(--mono); color: var(--muted); }

/* Toast */
.toast { position: fixed; left: 50%; bottom: calc(24px + env(safe-area-inset-bottom, 0px)); transform: translate(-50%, 12px); background: var(--frost); color: var(--deep-sound); font: 500 13px/1 var(--mono); padding: 12px 16px; border-radius: 9px; opacity: 0; transition: opacity .2s, transform .2s; pointer-events: none; z-index: 80; }
.toast.on { opacity: 1; transform: translate(-50%, 0); }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .hero-art .trace { stroke-dashoffset: 0; }
}