:root {
  --ink: #102a43;
  --muted: #52677b;
  --paper: #f7fafc;
  --white: #ffffff;
  --blue: #175cd3;
  --sky: #dbeafe;
  --coral: #ff6846;
  --line: #d9e2ec;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; line-height: 1.55; }
a { color: inherit; }
.site-header, main, footer { width: min(1120px, calc(100% - 40px)); margin-inline: auto; }
.site-header { height: 78px; display: flex; align-items: center; justify-content: space-between; }
.brand { display: inline-flex; gap: 10px; align-items: center; font-size: 1.25rem; font-weight: 800; text-decoration: none; }
.brand-mark { display: grid; place-items: center; width: 34px; height: 34px; color: white; background: var(--coral); border-radius: 11px; font-size: 1rem; }
nav { display: flex; gap: 28px; }
nav a, footer a { color: var(--muted); font-size: .94rem; font-weight: 650; text-decoration: none; }
nav a:hover, footer a:hover { color: var(--blue); }

.hero { position: relative; overflow: hidden; padding: 90px 7vw 76px; background: var(--ink); color: white; border-radius: 32px; }
.hero::after { content: ""; position: absolute; width: 360px; height: 360px; right: -120px; top: -140px; background: var(--coral); border-radius: 50%; opacity: .92; }
.eyebrow { color: #8fc4ff; font-size: .78rem; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
h1 { max-width: 800px; margin: 16px 0 22px; font-size: clamp(2.7rem, 6vw, 5.4rem); line-height: .98; letter-spacing: -.055em; }
.lede { max-width: 650px; margin: 0 0 32px; color: #d7e4ef; font-size: clamp(1.08rem, 2vw, 1.3rem); }
.cta { display: inline-block; padding: 14px 20px; background: var(--coral); color: white; border-radius: 12px; text-decoration: none; font-weight: 800; }
.cta:hover { filter: brightness(1.05); }
.cta-note { margin: 12px 0 0; color: #b8cadb; font-size: .9rem; }
.steps { padding: 72px 0 0; }
.steps > p { margin: 0 0 18px; color: var(--blue); font-weight: 800; }
.steps ol { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin: 0; padding: 0; list-style: none; counter-reset: step; }
.steps li { counter-increment: step; padding: 24px; background: var(--white); border: 1px solid var(--line); border-radius: 20px; color: var(--muted); }
.steps li::before { content: counter(step); display: grid; place-items: center; width: 30px; height: 30px; margin-bottom: 12px; color: white; background: var(--coral); border-radius: 50%; font-weight: 800; }
.steps li strong { display: block; color: var(--ink); font-size: 1.1rem; }
.trust a { color: var(--blue); font-weight: 700; }
.briefing { position: relative; z-index: 1; max-width: 720px; margin: 62px 0 0 auto; color: var(--ink); background: white; border: 1px solid rgba(255,255,255,.4); border-radius: 20px; box-shadow: 0 24px 70px rgba(0,0,0,.25); }
.briefing-top, .briefing-row { display: grid; grid-template-columns: 110px 1fr; gap: 16px; padding: 17px 20px; border-bottom: 1px solid var(--line); }
.briefing-top { display: flex; justify-content: space-between; color: var(--muted); font-size: .86rem; font-weight: 750; }
.briefing-note { padding: 14px 20px; color: var(--blue); font-size: .9rem; font-weight: 700; }

.proof { padding: 72px 0 96px; }
.proof > p { margin: 0 0 26px; color: var(--blue); font-weight: 800; }
.grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
article { min-height: 240px; padding: 28px; background: var(--white); border: 1px solid var(--line); border-radius: 20px; }
article > span { color: var(--coral); font-size: .8rem; font-weight: 850; }
h2 { margin: 12px 0 10px; font-size: clamp(1.5rem, 3vw, 2.3rem); line-height: 1.12; letter-spacing: -.035em; }
article p, .trust > p { color: var(--muted); font-size: 1rem; }
.trust { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; margin-bottom: 96px; padding: 44px; background: var(--sky); border-radius: 24px; }
.trust .eyebrow { color: var(--blue); }
footer { display: flex; justify-content: space-between; gap: 24px; padding: 30px 0 46px; border-top: 1px solid var(--line); color: var(--muted); font-size: .9rem; }
footer div { display: flex; gap: 22px; }

.legal { max-width: 780px; padding: 64px 0 96px; }
.legal h1 { color: var(--ink); font-size: clamp(2.4rem, 6vw, 4.4rem); }
.legal h2 { margin-top: 42px; font-size: 1.35rem; }
.legal p, .legal li { color: var(--muted); }
.legal .updated { color: var(--blue); font-weight: 700; }

.chat { position: relative; z-index: 1; max-width: 560px; margin: 56px 0 0 auto; padding: 22px; display: flex; flex-direction: column; gap: 10px; background: #e9efe5; border-radius: 22px; box-shadow: 0 24px 70px rgba(0,0,0,.25); }
.bubble { max-width: 86%; padding: 11px 14px; border-radius: 14px; font-size: .95rem; line-height: 1.45; color: var(--ink); }
.bubble.out { align-self: flex-end; background: #d9fdd3; border-top-right-radius: 4px; }
.bubble.in { align-self: flex-start; background: white; border-top-left-radius: 4px; }
.fwd { display: block; color: var(--muted); font-size: .78rem; font-style: italic; margin-bottom: 2px; }
.section-label { margin: 0 0 10px; color: var(--blue); font-weight: 800; }
.section-title { max-width: 820px; margin: 0 0 28px; }
.uses { padding: 72px 0 0; }
.use-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.use { min-height: 0; padding: 22px; display: flex; flex-direction: column; gap: 10px; }
.use h3 { margin: 0; font-size: 1.05rem; }
.use .say { margin: 0; color: var(--ink); font-weight: 650; font-size: .95rem; }
.use .reply { margin: 0; padding: 10px 12px; background: var(--paper); border: 1px solid var(--line); border-radius: 12px; color: var(--muted); font-size: .88rem; }
.different { display: grid; grid-template-columns: 1fr 1.3fr; gap: 48px; margin: 72px 0 0; padding: 44px; background: var(--white); border: 1px solid var(--line); border-radius: 24px; }
.points { margin: 0; padding: 0; list-style: none; display: grid; gap: 18px; }
.points li { color: var(--muted); }
.points strong { display: block; color: var(--ink); font-size: 1.05rem; }
.faq { padding: 72px 0 0; max-width: 820px; }
.faq details { padding: 16px 0; border-bottom: 1px solid var(--line); }
.faq summary { cursor: pointer; font-weight: 750; }
.faq details p { margin: 10px 0 0; color: var(--muted); }
.faq a { color: var(--blue); font-weight: 700; }
.closing { margin: 72px 0 96px; padding: 48px; text-align: center; background: var(--sky); border-radius: 24px; }
.closing h2 { max-width: 760px; margin: 0 auto 24px; }

@media (max-width: 1000px) {
  .use-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 720px) {
  .site-header, main, footer { width: min(100% - 24px, 1120px); }
  nav a:first-child { display: none; }
  .hero { padding: 64px 24px 28px; border-radius: 24px; }
  .hero::after { width: 210px; height: 210px; right: -100px; top: -100px; }
  .briefing { margin-top: 46px; }
  .briefing-row { grid-template-columns: 1fr; gap: 3px; }
  .grid, .trust, .steps ol, .use-grid, .different { grid-template-columns: 1fr; }
  .different, .closing { padding: 28px; }
  .chat { margin-top: 40px; padding: 14px; }
  .steps { padding-top: 48px; }
  .proof { padding: 64px 0; }
  .trust { gap: 12px; padding: 28px; margin-bottom: 64px; }
  footer { flex-direction: column; }
  footer div { flex-wrap: wrap; }
}