/* Шрифты лежат у нас: без запросов к чужим серверам. */
@font-face { font-family: "Golos Text"; font-weight: 400 700; font-display: swap; src: url(/fonts/golos-cyr.woff2) format("woff2"); unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116; }
@font-face { font-family: "Golos Text"; font-weight: 400 700; font-display: swap; src: url(/fonts/golos-lat.woff2) format("woff2"); unicode-range: U+0000-00FF, U+2000-206F, U+20AC, U+2122, U+2212; }
@font-face { font-family: "Unbounded"; font-weight: 400 800; font-display: swap; src: url(/fonts/unbounded-cyr.woff2) format("woff2"); unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116; }
@font-face { font-family: "Unbounded"; font-weight: 400 800; font-display: swap; src: url(/fonts/unbounded-lat.woff2) format("woff2"); unicode-range: U+0000-00FF, U+2000-206F, U+20AC, U+2122, U+2212; }

:root {
  --paper: #eef2f7;
  --surface: #ffffff;
  --ink: #0d1b2a;
  --muted: #55657a;
  --line: #d5dde8;
  --tg: #1c86d8;          /* кнопка «в Telegram» — цвет самого мессенджера */
  --tg-ink: #ffffff;
  --mine: #dcf8c6;        /* пузырь «моё сообщение», как в Telegram */
  --accent: #1c86d8;      /* цвет бота, задаётся на <body> */
  --wrap: 68rem;
  --text: 42rem;
}
@media (prefers-color-scheme: dark) {
  :root {
    --paper: #0c141d; --surface: #15202c; --ink: #e9eff6; --muted: #98a7b9; --line: #263545;
    --tg: #3aa0ec; --tg-ink: #06121d; --mine: #2b5a3a;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--paper); color: var(--ink);
  font: 400 1.0625rem/1.6 "Golos Text", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
a { color: inherit; text-decoration-color: color-mix(in srgb, currentColor 35%, transparent); text-underline-offset: .18em; }
a:hover { text-decoration-color: currentColor; }
a:focus-visible { outline: 3px solid var(--tg); outline-offset: 3px; border-radius: 4px; }
img { max-width: 100%; height: auto; }

h1, h2, .brand { font-family: "Unbounded", "Golos Text", system-ui, sans-serif; letter-spacing: -.02em; text-wrap: balance; }
h1 { font-size: clamp(1.7rem, 1.1rem + 2.6vw, 2.9rem); line-height: 1.12; font-weight: 700; margin: 0 0 1rem; }
h2 { font-size: clamp(1.25rem, 1.05rem + .9vw, 1.7rem); line-height: 1.2; font-weight: 600; margin: 0 0 1.25rem; }
h2 a { text-decoration: none; }
h3 { font-size: 1.0625rem; line-height: 1.35; font-weight: 700; margin: 0 0 .3rem; }
p { margin: 0 0 1rem; }
.lead { font-size: 1.1875rem; line-height: 1.5; color: var(--muted); max-width: 36rem; }

.top, main, .bottom { max-width: var(--wrap); margin: 0 auto; padding-inline: 1.25rem; }
.top { display: flex; flex-wrap: wrap; align-items: baseline; gap: .5rem 2rem; padding-block: 1.25rem; }
.brand { font-weight: 700; font-size: 1.05rem; text-decoration: none; }
.top nav, .bottom nav { display: flex; flex-wrap: wrap; gap: .25rem 1.25rem; font-size: .95rem; }
.top nav a { text-decoration: none; color: var(--muted); padding-block: .35rem; }
.top nav a:hover, .top nav a[aria-current] { color: var(--ink); }
main > section, article > section { margin-block: 0 4rem; }
.bottom { border-top: 1px solid var(--line); padding-block: 2rem 3rem; color: var(--muted); font-size: .95rem; }
.bottom p { max-width: var(--text); }

.crumbs { font-size: .9rem; color: var(--muted); margin-block: .5rem 2rem; }
.crumbs i { font-style: normal; margin-inline: .5rem; opacity: .6; }

/* Первый экран бота: слева — что это и кнопка, справа — переписка. */
.hero { display: grid; gap: 2.5rem; align-items: center; }
@media (min-width: 54rem) { .hero { grid-template-columns: 1.05fr .95fr; gap: 4rem; } }
.avatar { border-radius: 50%; display: block; }
.hero .avatar { margin-bottom: 1.5rem; box-shadow: 0 18px 40px -18px var(--accent); }
.handle { color: var(--muted); font-size: .95rem; margin: .9rem 0 0; }

.cta {
  display: inline-block; background: var(--tg); color: var(--tg-ink); text-decoration: none;
  font-weight: 700; font-size: 1.0625rem; padding: .95rem 1.6rem; border-radius: 999px; margin-top: .5rem;
}
.cta.alt { background: none; color: var(--ink); box-shadow: inset 0 0 0 2px var(--tg); }
.cta:hover { filter: brightness(1.07); }
.cta:active { transform: translateY(1px); }

.chat {
  background: color-mix(in srgb, var(--accent) 16%, var(--surface));
  border-radius: 1.75rem; padding: 1.5rem 1.1rem; display: flex; flex-direction: column; gap: .6rem;
}
.msg { margin: 0; max-width: 86%; padding: .6rem .9rem; border-radius: 1.1rem; font-size: 1rem; line-height: 1.45; overflow-wrap: anywhere; }
.msg.me { align-self: flex-end; background: var(--mine); border-bottom-right-radius: .3rem; }
.msg.bot { align-self: flex-start; background: var(--surface); border-bottom-left-radius: .3rem; }

.chat-wrap { margin: 0; min-width: 0; }
.chat-wrap > figcaption { color: var(--muted); font-size: .85rem; margin-top: .6rem; padding-inline: .4rem; }
.msg.media { padding: .3rem; max-width: min(86%, 20rem); }
.msg.media img, .msg.media video { display: block; width: 100%; height: auto; border-radius: .85rem; }
.msg.media figcaption { padding: .35rem .6rem .25rem; }
.msg.media.round { background: none; padding: 0; max-width: 15rem; }
.msg.media.round video { border-radius: 50%; aspect-ratio: 1; object-fit: cover; }

/* Шаги — настоящая последовательность, поэтому с номерами. */
.steps { list-style: none; counter-reset: step; padding: 0; margin: 0; display: grid; gap: 1.5rem; max-width: var(--text); }
.steps li { counter-increment: step; display: grid; grid-template-columns: 2.6rem 1fr; column-gap: 1rem; }
.steps li::before {
  content: counter(step); grid-row: span 2; width: 2.6rem; height: 2.6rem; border-radius: 50%;
  display: grid; place-items: center; font: 700 1rem "Unbounded", sans-serif;
  background: var(--accent); color: #fff;
}
.steps p { margin: 0; color: var(--muted); grid-column: 2; }

.features { margin: 0; display: grid; gap: 1.5rem 3rem; }
@media (min-width: 44rem) { .features { grid-template-columns: 1fr 1fr; } }
.features div { border-top: 2px solid var(--accent); padding-top: .8rem; }
.features dt { font-weight: 700; margin-bottom: .25rem; }
.features dd { margin: 0; color: var(--muted); }

.prose > *, .faq > * { max-width: var(--text); }
.prose ul { padding-left: 1.2rem; margin: 0 0 1rem; }
.prose li { margin-bottom: .4rem; }
.prose h1 { margin-top: 1.5rem; }
.prose h2 { margin-top: 2.5rem; }
.faq h3 { margin-top: 1.6rem; }
.faq p { color: var(--muted); }

.final { background: var(--surface); border-radius: 1.75rem; padding: 2.5rem 1.5rem; text-align: center; }
.final h2 { margin-bottom: .75rem; }

.intro { margin-top: 2rem; }
.rows { list-style: none; padding: 0; margin: 0; display: grid; gap: .5rem 2rem; }
@media (min-width: 44rem) { .rows:not(.wide) { grid-template-columns: 1fr 1fr; } }
.row-main {
  display: flex; gap: 1rem; align-items: center; text-decoration: none;
  padding: .8rem; margin-inline: -.8rem; border-radius: 1.1rem;
}
.row-main:hover { background: var(--surface); }
.row-main > span { display: grid; gap: .1rem; }
.row-main > span > span { color: var(--muted); font-size: .97rem; line-height: 1.4; }
.row .avatar { flex: none; }

.updated { color: var(--muted); font-size: .9rem; }

@media (prefers-reduced-motion: no-preference) {
  .cta { transition: filter .15s, transform .1s; }
}