/* Talkn landing page. No framework, no web fonts (system stack), one stylesheet. */
:root {
  --bg: #0b0b14; --bg2: #11111d; --card: #151524; --line: #25253a;
  --text: #ecebf5; --muted: #a3a2b8; --a: #7366ff; --b: #f73164;
  --grad: linear-gradient(135deg, var(--a), var(--b));
  --r: 18px; --shadow: 0 20px 60px -20px rgba(115, 102, 255, .35);
  --font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
@media (prefers-color-scheme: light) {
  :root { --bg: #fbfbfe; --bg2: #f3f2fb; --card: #fff; --line: #e6e4f2; --text: #171627; --muted: #5d5b75;
          --shadow: 0 20px 50px -25px rgba(115, 102, 255, .45); }
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; font: 16px/1.6 var(--font); color: var(--text); background: var(--bg); -webkit-font-smoothing: antialiased; }
img { display: block; }
a { color: inherit; }
.wrap { width: min(1140px, 92vw); margin: 0 auto; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--a); color: #fff; padding: 8px 12px; border-radius: 8px; z-index: 99; }
.skip:focus { left: 8px; }
:focus-visible { outline: 3px solid var(--a); outline-offset: 3px; border-radius: 6px; }

/* nav */
.nav { position: sticky; top: 0; z-index: 10; backdrop-filter: saturate(160%) blur(14px); background: color-mix(in srgb, var(--bg) 75%, transparent); border-bottom: 1px solid var(--line); }
.nav-in { display: flex; align-items: center; gap: 24px; height: 68px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; font-size: 20px; letter-spacing: -.02em; text-decoration: none; }
.nav nav { display: flex; gap: 22px; margin-left: auto; }
.nav nav a { text-decoration: none; color: var(--muted); font-size: 15px; }
.nav nav a:hover { color: var(--text); }

/* buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 14px 22px; border-radius: 12px; border: 0; cursor: pointer;
       background: var(--grad); color: #fff; font: 600 16px var(--font); text-decoration: none; box-shadow: var(--shadow); transition: transform .15s, filter .15s; }
.btn:hover { transform: translateY(-1px); filter: brightness(1.08); }
.btn:disabled { opacity: .6; cursor: progress; transform: none; }
.btn-sm { padding: 10px 16px; font-size: 14px; }
.btn-ghost { background: transparent; color: var(--text); border: 1px solid var(--line); box-shadow: none; }
.btn-full { width: 100%; margin-top: 8px; }

/* hero */
.hero { position: relative; overflow: hidden; padding: 72px 0 56px; }
.glow { position: absolute; inset: -40% -10% auto; height: 700px; background: radial-gradient(closest-side, rgba(115,102,255,.35), transparent 70%),
        radial-gradient(closest-side at 70% 40%, rgba(247,49,100,.22), transparent 70%); filter: blur(10px); pointer-events: none; }
.hero-in { position: relative; display: grid; grid-template-columns: 1.15fr .85fr; gap: 56px; align-items: center; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; margin: 0 0 18px; padding: 6px 12px; border: 1px solid var(--line); border-radius: 999px; color: var(--muted); font-size: 14px; }
.dot { width: 8px; height: 8px; border-radius: 50%; background: #2bd47d; box-shadow: 0 0 0 4px rgba(43,212,125,.18); }
h1 { margin: 0; font-size: clamp(36px, 5.4vw, 62px); line-height: 1.05; letter-spacing: -.035em; }
.grad { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.lead { margin: 22px 0 30px; font-size: clamp(17px, 1.6vw, 20px); color: var(--muted); max-width: 40ch; }
.cta-row { display: flex; flex-wrap: wrap; gap: 12px; }
.proof { display: flex; gap: 32px; list-style: none; padding: 0; margin: 40px 0 0; }
.proof li { display: grid; }
.proof strong { font-size: 24px; letter-spacing: -.02em; }
.proof span { color: var(--muted); font-size: 14px; }

/* phone mock */
.phone { background: var(--card); border: 1px solid var(--line); border-radius: 28px; padding: 14px; box-shadow: var(--shadow); max-width: 380px; justify-self: end; width: 100%; }
.phone-top { display: flex; align-items: center; gap: 10px; padding: 6px 6px 14px; border-bottom: 1px solid var(--line); }
.phone-top div { display: grid; line-height: 1.2; }
.phone-top small { color: #2bd47d; font-size: 12px; }
.avatar { width: 36px; height: 36px; border-radius: 50%; display: grid; place-items: center; background: var(--grad); color: #fff; font-weight: 700; }
.chat { display: flex; flex-direction: column; gap: 8px; padding: 14px 4px 4px; }
.msg { margin: 0; max-width: 82%; padding: 9px 12px; border-radius: 14px; font-size: 14px; line-height: 1.4; animation: pop .5s both; }
.msg.in { align-self: flex-start; background: var(--bg2); border-bottom-left-radius: 4px; }
.msg.out { align-self: flex-end; background: color-mix(in srgb, var(--a) 22%, var(--card)); border-bottom-right-radius: 4px; }
.msg.file { display: flex; gap: 8px; font-weight: 600; }
.chat .msg:nth-child(2) { animation-delay: .25s } .chat .msg:nth-child(3) { animation-delay: .5s }
.chat .msg:nth-child(4) { animation-delay: .75s } .chat .msg:nth-child(5) { animation-delay: 1s } .chat .msg:nth-child(6) { animation-delay: 1.25s }
@keyframes pop { from { opacity: 0; transform: translateY(6px) scale(.98); } }
@media (prefers-reduced-motion: reduce) { .msg { animation: none; } html { scroll-behavior: auto; } .btn { transition: none; } }

/* band */
.band { border-block: 1px solid var(--line); background: var(--bg2); }
.band-in { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 14px 36px; padding: 18px 0; color: var(--muted); font-size: 15px; }
.band-in b { color: var(--text); font-weight: 650; }

/* sections */
.section { padding: 88px 0; }
.narrow { width: min(760px, 92vw); }
h2 { margin: 0 0 10px; font-size: clamp(28px, 3.4vw, 40px); letter-spacing: -.03em; text-align: center; }
.sub { margin: 0 auto 44px; color: var(--muted); text-align: center; max-width: 60ch; }
.sub.left, .split h2 { text-align: left; margin-left: 0; }
h3 { margin: 0 0 8px; font-size: 18px; letter-spacing: -.01em; }

.steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.steps li, .card { background: var(--card); border: 1px solid var(--line); border-radius: var(--r); padding: 26px; }
.steps p, .card p { margin: 0; color: var(--muted); }
.n { display: inline-grid; place-items: center; width: 34px; height: 34px; border-radius: 10px; background: var(--grad); color: #fff; font-weight: 700; margin-bottom: 14px; }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.card { transition: border-color .2s, transform .2s; }
.card:hover { border-color: color-mix(in srgb, var(--a) 55%, var(--line)); transform: translateY(-2px); }

.split { display: grid; grid-template-columns: .9fr 1.1fr; gap: 48px; align-items: start; }
.checks { list-style: none; padding: 0; margin: 0; display: grid; gap: 14px; }
.checks li { position: relative; padding: 16px 18px 16px 50px; background: var(--card); border: 1px solid var(--line); border-radius: 14px; color: var(--muted); }
.checks li b { color: var(--text); }
.checks li::before { content: ""; position: absolute; left: 18px; top: 19px; width: 18px; height: 18px; border-radius: 50%; background: var(--grad);
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M9 16.2 4.8 12l-1.4 1.4L9 19 21 7l-1.4-1.4z'/%3E%3C/svg%3E") center/16px no-repeat, linear-gradient(#000 0 0); -webkit-mask-composite: source-over; }

/* form */
.form-card { max-width: 760px; margin: 0 auto; background: var(--card); border: 1px solid var(--line); border-radius: 24px; padding: clamp(24px, 4vw, 44px); box-shadow: var(--shadow); }
.form-head h2 { text-align: left; }
form { display: grid; gap: 16px; }
.row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
label { display: grid; gap: 6px; font-size: 14px; font-weight: 600; }
input, select { font: 15px var(--font); color: var(--text); background: var(--bg); border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px; width: 100%; }
input:focus, select:focus { outline: none; border-color: var(--a); box-shadow: 0 0 0 4px color-mix(in srgb, var(--a) 22%, transparent); }
input[aria-invalid="true"] { border-color: var(--b); }
.consent { display: flex; gap: 10px; align-items: flex-start; font-weight: 400; color: var(--muted); }
.consent input { width: 18px; height: 18px; margin-top: 3px; flex: none; accent-color: var(--a); }
.hp { position: absolute !important; left: -10000px; width: 1px; height: 1px; overflow: hidden; }
.status { min-height: 1.4em; margin: 0; font-size: 15px; }
.status.ok { color: #2bd47d; } .status.err { color: var(--b); }

/* faq */
details { border-bottom: 1px solid var(--line); padding: 18px 0; }
summary { cursor: pointer; font-weight: 600; font-size: 17px; list-style: none; display: flex; justify-content: space-between; gap: 16px; }
summary::after { content: "+"; color: var(--muted); font-size: 22px; line-height: 1; }
details[open] summary::after { content: "–"; }
details p { margin: 10px 0 0; color: var(--muted); }

/* footer */
.foot { border-top: 1px solid var(--line); padding: 28px 0; color: var(--muted); font-size: 14px; }
.foot-in { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; }
.foot .brand { font-size: 16px; color: var(--text); }

@media (max-width: 900px) {
  .hero-in, .split { grid-template-columns: 1fr; }
  .phone { justify-self: start; }
  .steps, .grid { grid-template-columns: 1fr; }
  .nav nav { display: none; }
  .nav .btn-sm { margin-left: auto; }
}
@media (max-width: 560px) { .row { grid-template-columns: 1fr; } .proof { gap: 20px; } }