:root {
  --ink: #0f1b2d; --muted: #5b6b82; --line: #e3e8f0; --bg: #ffffff;
  --soft: #f5f8fc; --brand: #0ea5a4; --brand2: #4f46e5; --warn: #b45309;
  --radius: 14px; --shadow: 0 10px 30px rgba(15,27,45,.08);
  --maxw: 1080px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; font: 16px/1.55 -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; color: var(--ink); background: var(--bg); }
a { color: inherit; text-decoration: none; }
h1, h2, h3 { line-height: 1.15; }

/* nav */
.nav { display: flex; align-items: center; justify-content: space-between; max-width: var(--maxw); margin: 0 auto; padding: 18px 24px; }
.brand { font-size: 19px; letter-spacing: -.2px; }
.brand b { font-weight: 800; }
.nav nav { display: flex; align-items: center; gap: 22px; }
.nav nav a { color: var(--muted); font-weight: 600; font-size: 15px; }
.nav nav a:hover { color: var(--ink); }

/* buttons */
.btn { display: inline-block; padding: 11px 18px; border-radius: 10px; font-weight: 700; font-size: 15px; cursor: pointer; border: 1px solid transparent; transition: .15s; }
.btn.primary { background: linear-gradient(135deg, var(--brand), var(--brand2)); color: #fff; }
.btn.primary:hover { filter: brightness(1.05); }
.btn.ghost { background: #fff; border-color: var(--line); color: var(--ink); }
.btn.ghost:hover { border-color: var(--brand); color: var(--brand); }
.btn.wide { width: 100%; padding: 14px; font-size: 16px; }

/* hero */
.hero { display: grid; grid-template-columns: 1.1fr .9fr; gap: 48px; align-items: center; max-width: var(--maxw); margin: 28px auto 10px; padding: 24px; }
.eyebrow { display: inline-block; font-size: 13px; font-weight: 700; letter-spacing: .4px; text-transform: uppercase; color: var(--brand); background: var(--soft); padding: 6px 12px; border-radius: 999px; }
.hero h1 { font-size: clamp(34px, 5vw, 54px); font-weight: 800; letter-spacing: -1px; margin: 16px 0 14px; }
.grad { background: linear-gradient(135deg, var(--brand), var(--brand2)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.lede { font-size: 18px; color: #314257; max-width: 34em; }
.cta-row { display: flex; gap: 12px; margin: 22px 0 10px; flex-wrap: wrap; }
.microcopy { font-size: 13px; color: var(--muted); margin-top: 6px; }

.hero-card { background: linear-gradient(180deg, #0f1b2d, #16263d); color: #e9eef6; border-radius: 20px; padding: 22px; box-shadow: var(--shadow); }
.chip { font-size: 13px; font-weight: 700; color: #7ef0ee; margin-bottom: 14px; }
.bubble { padding: 11px 14px; border-radius: 14px; margin: 9px 0; font-size: 14.5px; max-width: 92%; }
.bubble.you { background: #24364f; margin-left: auto; border-bottom-right-radius: 4px; }
.bubble.arya { background: rgba(14,165,164,.18); border: 1px solid rgba(126,240,238,.25); border-bottom-left-radius: 4px; }
.bubble .muted { color: #9fb0c7; font-size: 12.5px; }

/* stats */
.stats { display: flex; gap: 20px; justify-content: center; flex-wrap: wrap; max-width: var(--maxw); margin: 26px auto; padding: 22px 24px; background: var(--soft); border-radius: var(--radius); }
.stats div { text-align: center; flex: 1 1 180px; }
.stats b { display: block; font-size: 30px; color: var(--brand2); font-weight: 800; }
.stats span { font-size: 13.5px; color: var(--muted); }

/* sections */
section.features, section.how, section.trust, section.demo { max-width: var(--maxw); margin: 64px auto; padding: 0 24px; }
section h2 { font-size: 28px; font-weight: 800; letter-spacing: -.5px; margin-bottom: 22px; }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.grid article { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow); }
.grid h3 { font-size: 17px; margin: 0 0 8px; }
.grid p { color: var(--muted); font-size: 14.5px; margin: 0; }

.how ol { counter-reset: step; list-style: none; padding: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.how li { counter-increment: step; background: var(--soft); border-radius: var(--radius); padding: 18px; font-size: 14.5px; position: relative; }
.how li::before { content: counter(step); display: grid; place-items: center; width: 30px; height: 30px; border-radius: 50%; background: linear-gradient(135deg, var(--brand), var(--brand2)); color: #fff; font-weight: 800; margin-bottom: 10px; }

/* demo */
.demo { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: start; background: var(--soft); border-radius: 20px; padding: 36px; }
.demo .ticks { list-style: none; padding: 0; margin: 16px 0 0; }
.demo .ticks li { padding-left: 26px; position: relative; margin: 8px 0; color: #314257; }
.demo .ticks li::before { content: "✓"; position: absolute; left: 0; color: var(--brand); font-weight: 800; }
.demo-form { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; box-shadow: var(--shadow); }
.field { margin-bottom: 14px; }
.field label { display: block; font-size: 13.5px; font-weight: 600; margin-bottom: 6px; }
.field input, .field select, .field textarea { width: 100%; padding: 11px 12px; border: 1px solid var(--line); border-radius: 10px; font: inherit; }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--brand); box-shadow: 0 0 0 3px rgba(14,165,164,.15); }
.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; }
.consent { display: flex; gap: 9px; align-items: flex-start; font-size: 13px; color: var(--muted); margin: 6px 0 16px; }
.consent input { margin-top: 3px; }
.formmsg { font-size: 14px; margin: 12px 0 0; min-height: 1.2em; }
.formmsg.ok { color: var(--brand); font-weight: 600; }
.formmsg.err { color: #c0392b; font-weight: 600; }
.muted { color: var(--muted); }

footer { max-width: var(--maxw); margin: 40px auto; padding: 24px; border-top: 1px solid var(--line); display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; font-size: 13px; }

@media (max-width: 820px) {
  .hero, .demo { grid-template-columns: 1fr; }
  .grid, .how ol { grid-template-columns: 1fr; }
  .nav nav a:not(.btn) { display: none; }
}