:root {
  --ink: #172033;
  --muted: #687184;
  --line: #d8dde6;
  --paper: #f4f6f8;
  --card: rgba(255, 255, 255, 0.78);
  --accent: #b8ef78;
  --blue: #8ab6ff;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 84% 8%, rgba(138,182,255,.28), transparent 32rem),
    radial-gradient(circle at 10% 28%, rgba(184,239,120,.22), transparent 30rem),
    var(--paper);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
a { color: inherit; }
.site-header, footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  max-width: 1240px;
  margin: auto;
  padding: 1.35rem 2rem;
}
.site-header { position: relative; z-index: 2; }
.brand { display: flex; align-items: center; gap: .7rem; font-weight: 750; text-decoration: none; }
.brand-mark {
  width: 1.9rem; height: 1.9rem; border-radius: 50%;
  background: conic-gradient(from 45deg, var(--blue), var(--accent), #e2e6ed, var(--blue));
  box-shadow: inset 0 0 0 .3rem rgba(255,255,255,.55), 0 .35rem 1rem rgba(23,32,51,.15);
}
nav, footer div { display: flex; gap: 1.35rem; }
nav a, footer a, .nav-contact, .footer-contact { color: var(--muted); text-decoration: none; font-size: .92rem; }
nav a:hover, footer a:hover, .nav-contact:hover, .footer-contact:hover { color: var(--ink); }
.nav-contact, .footer-contact { padding: 0; border: 0; background: transparent; cursor: pointer; font: inherit; }
main { max-width: 1240px; margin: auto; padding: 2rem; }
.hero {
  min-height: 73vh; display: grid; grid-template-columns: 1.35fr .65fr;
  align-items: center; gap: 5rem; padding: 5rem 0 7rem;
}
.eyebrow { color: #536071; font-size: .76rem; font-weight: 800; letter-spacing: .17em; text-transform: uppercase; }
h1, h2 { font-family: Georgia, "Times New Roman", serif; letter-spacing: -.035em; }
h1 { max-width: 850px; margin: 1.1rem 0 1.5rem; font-size: clamp(3.4rem, 7vw, 7.6rem); line-height: .95; font-weight: 500; }
.lede { max-width: 720px; color: var(--muted); font-size: clamp(1.05rem, 1.8vw, 1.35rem); line-height: 1.7; }
.hero-actions { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: 2.2rem; }
.button { padding: .85rem 1.15rem; border-radius: 999px; text-decoration: none; font-weight: 700; font-size: .9rem; }
.primary { color: white; background: var(--ink); }
.secondary { border: 1px solid var(--line); background: rgba(255,255,255,.55); }
.button.unavailable {
  cursor: not-allowed; opacity: .52; filter: grayscale(1);
  pointer-events: none;
}
.voice-introduction {
  max-width: 660px; margin-top: 1.4rem; padding: 1rem 1.1rem;
  border: 1px solid rgba(255,255,255,.8); border-radius: 1.3rem;
  background: rgba(255,255,255,.58); box-shadow: 0 .8rem 2.5rem rgba(23,32,51,.08);
  backdrop-filter: blur(16px);
}
.voice-heading { display: flex; align-items: center; gap: .8rem; margin-bottom: .8rem; }
.voice-heading .eyebrow { margin: 0 0 .2rem; font-size: .65rem; }
.voice-heading strong { font-size: .95rem; }
.voice-orb {
  width: 2.7rem; height: 2.7rem; flex: 0 0 auto; border-radius: 50%;
  background:
    radial-gradient(circle at 34% 28%, rgba(255,255,255,.9), transparent 23%),
    conic-gradient(from 35deg, var(--blue), var(--accent), #d8dce5, var(--blue));
  box-shadow: inset 0 0 0 .35rem rgba(255,255,255,.35), 0 .3rem 1rem rgba(23,32,51,.18);
}
.voice-waveform { display: block; width: 100%; height: 4.75rem; margin-bottom: .65rem; }
.voice-introduction audio { display: block; width: 100%; height: 2.5rem; }
.voice-picker { margin-top: .9rem; padding-top: .9rem; border-top: 1px solid var(--line); }
.voice-picker label { display: block; margin-bottom: .45rem; color: var(--muted); font-size: .75rem; font-weight: 750; }
.voice-picker-row { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: .55rem; }
.voice-picker select, .voice-picker button {
  min-height: 2.5rem; border: 1px solid var(--line); border-radius: .75rem;
  background: rgba(255,255,255,.72); color: var(--ink); font: inherit;
}
.voice-picker select { min-width: 0; padding: 0 .75rem; }
.voice-picker button { padding: 0 .85rem; cursor: pointer; font-size: .78rem; font-weight: 750; }
.signal-card {
  min-height: 310px; display: flex; flex-direction: column; justify-content: space-between;
  padding: 2rem; border: 1px solid rgba(255,255,255,.65); border-radius: 2rem;
  background: linear-gradient(145deg, rgba(93,107,125,.86), rgba(42,51,65,.93));
  color: white; box-shadow: 0 2rem 5rem rgba(23,32,51,.22); backdrop-filter: blur(18px);
}
.signal-card p { color: rgba(255,255,255,.68); }
.signal-card strong { max-width: 10ch; font-family: Georgia, serif; font-size: 2rem; font-weight: 500; }
.signal-lines { display: flex; align-items: center; gap: .5rem; height: 4rem; }
.signal-lines span { flex: 1; border-radius: 1rem; background: var(--accent); }
.signal-lines span:nth-child(1) { height: 28%; } .signal-lines span:nth-child(2) { height: 68%; }
.signal-lines span:nth-child(3) { height: 44%; } .signal-lines span:nth-child(4) { height: 88%; }
.signal-lines span:nth-child(5) { height: 52%; }
.section { padding: 7rem 0; border-top: 1px solid var(--line); }
.section-heading { max-width: 760px; margin-bottom: 3rem; }
h2 { margin: .8rem 0 1rem; font-size: clamp(2.5rem, 5vw, 5rem); line-height: 1; font-weight: 500; }
.section-heading > p:last-child, .education p { color: var(--muted); line-height: 1.7; }
.capability-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; }
.capability-grid article {
  min-height: 240px; padding: 1.5rem; border: 1px solid var(--line);
  border-radius: 1.4rem; background: var(--card); backdrop-filter: blur(14px);
}
.capability-grid article span { color: var(--muted); font-size: .8rem; }
.capability-grid h3 { margin-top: 3.5rem; font-size: 1.15rem; }
.capability-grid p { color: var(--muted); line-height: 1.55; }
.timeline { border-top: 1px solid var(--line); }
.timeline article { display: grid; grid-template-columns: 11rem 1fr; gap: 2rem; padding: 1.6rem 0; border-bottom: 1px solid var(--line); }
.timeline time { color: var(--muted); font-size: .9rem; }
.timeline h3 { margin: 0; font-size: 1.12rem; }
.timeline p { margin: .35rem 0 0; color: var(--muted); }
.education { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: end; }
.education h3 { font-size: 1.25rem; }
.mobile-apps {
  display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 3rem;
  padding: 5rem 0; border-top: 1px solid var(--line);
}
.mobile-apps h2 { max-width: 700px; }
.mobile-badges { display: flex; flex-wrap: wrap; gap: .8rem; }
.mobile-badges button {
  display: flex; align-items: center; gap: .75rem; min-width: 180px;
  padding: .75rem 1rem; border-radius: 1rem; color: white; background: var(--ink);
  border: 0; font: inherit; text-align: left; box-shadow: 0 .75rem 2rem rgba(23,32,51,.15);
}
.mobile-badges button:disabled {
  cursor: not-allowed; opacity: .48; filter: grayscale(1);
}
.mobile-badges svg { width: 1.7rem; height: 1.7rem; fill: currentColor; }
.mobile-badges span { font-weight: 750; }
.mobile-badges small { display: block; color: rgba(255,255,255,.62); font-size: .62rem; font-weight: 600; }
footer { border-top: 1px solid var(--line); color: var(--muted); font-size: .88rem; }
.contact-card {
  width: min(92vw, 560px); padding: 2.2rem; border: 1px solid rgba(255,255,255,.8);
  border-radius: 2rem; color: var(--ink); background: rgba(244,246,248,.94);
  box-shadow: 0 2.5rem 7rem rgba(23,32,51,.35); backdrop-filter: blur(24px);
}
.contact-card::backdrop { background: rgba(23,32,51,.36); backdrop-filter: blur(8px); }
.contact-card form { position: absolute; top: .9rem; right: .9rem; }
.contact-close {
  width: 2.2rem; height: 2.2rem; border: 1px solid var(--line); border-radius: 50%;
  color: var(--ink); background: white; cursor: pointer; font-size: 1.3rem;
}
.contact-orb {
  width: 4rem; height: 4rem; margin-bottom: 1.3rem; border-radius: 50%;
  background: conic-gradient(from 45deg, var(--blue), var(--accent), #d8dce5, var(--blue));
  box-shadow: inset 0 0 0 .5rem rgba(255,255,255,.4), 0 .7rem 2rem rgba(23,32,51,.15);
}
.contact-card h2 { margin: .55rem 0; font-size: clamp(2.3rem, 8vw, 4rem); }
.contact-card > p { color: var(--muted); }
#contact-email-image {
  display: block; width: 100%; height: auto; margin-top: 1.4rem;
  border: 1px solid var(--line); border-radius: 1rem;
}
.contact-card .contact-hint { margin-bottom: 0; font-size: .72rem; }
.legal-page { max-width: 900px; padding-top: 4rem; padding-bottom: 7rem; }
.legal-card { padding: clamp(1.5rem, 5vw, 4rem); border: 1px solid var(--line); border-radius: 2rem; background: var(--card); box-shadow: 0 2rem 6rem rgba(23,32,51,.1); backdrop-filter: blur(18px); }
.legal-card h1 { font-size: clamp(3.3rem, 8vw, 6rem); }
.legal-intro { max-width: 650px; color: var(--muted); font-size: 1.1rem; line-height: 1.7; }
.legal-card section { padding: 2rem 0; border-top: 1px solid var(--line); }
.legal-card h2 { font-family: Georgia, serif; font-size: 1.7rem; }
.legal-card p, .legal-card address { color: #4e596b; line-height: 1.7; font-style: normal; }
.legal-source { padding-top: 2rem; border-top: 1px solid var(--line); font-size: .85rem; }
@media (max-width: 850px) {
  .hero { grid-template-columns: 1fr; gap: 2rem; padding-top: 3rem; }
  .signal-card { min-height: 250px; }
  .capability-grid { grid-template-columns: repeat(2, 1fr); }
  .education { grid-template-columns: 1fr; gap: 1rem; }
  .mobile-apps { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .site-header, footer { padding: 1.15rem; }
  .site-header nav a:not(:last-child) { display: none; }
  main { padding: 1.15rem; }
  h1 { font-size: 3.4rem; }
  .capability-grid { grid-template-columns: 1fr; }
  .timeline article { grid-template-columns: 1fr; gap: .45rem; }
  .voice-picker-row { grid-template-columns: 1fr; }
  footer { align-items: flex-start; flex-direction: column; }
}