/* Chatterfly 0.1.7 · промо-страница. Монохром, строгая типографика, много воздуха.
   Без неона, градиентов, размытия и декоративных анимаций. */
:root {
  --bg: #0f0f10;
  --panel: #141416;
  --line: rgba(255, 255, 255, 0.09);
  --line-strong: rgba(255, 255, 255, 0.18);
  --text: #ececee;
  --dim: #9a9aa1;
  --faint: #5f5f66;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Inter, Roboto, Arial, sans-serif;
  --wrap: 1080px;
  color-scheme: dark;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--text); font: 400 16px/1.6 var(--font); -webkit-font-smoothing: antialiased; overflow-x: clip; }
a { color: inherit; }
h1, h2, h3, p, ol { margin: 0; }
.sprite { display: none; }
.icn { width: 20px; height: 20px; flex-shrink: 0; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
:focus-visible { outline: 2px solid var(--text); outline-offset: 3px; }
[hidden] { display: none !important; }

/* --- Навигация --- */
.nav { max-width: var(--wrap); margin: 0 auto; padding: 28px 32px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 700; font-size: 17px; letter-spacing: -0.01em; }
.brand .icn { width: 24px; height: 24px; }
.nav__links { display: flex; align-items: center; gap: 28px; font-size: 14px; }
.nav__links a { text-decoration: none; color: var(--dim); }
.nav__links a:hover { color: var(--text); }
.nav__ver { color: var(--faint); font-variant-numeric: tabular-nums; }
.nav__links .nav__cta { white-space: nowrap; color: var(--text); padding: 8px 16px; border: 1px solid var(--line-strong); border-radius: 999px; }
.nav__links .nav__cta:hover { background: var(--text); color: var(--bg); }

/* --- Первый экран --- */
main { max-width: var(--wrap); margin: 0 auto; padding: 0 32px; }
.hero { padding: 120px 0 140px; }
.eyebrow { font-size: 13px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--faint); margin-bottom: 28px; }
.hero h1 { font-size: clamp(42px, 7.4vw, 88px); line-height: 1.02; font-weight: 700; letter-spacing: -0.035em; max-width: 14ch; }
.hero__lead { margin-top: 32px; max-width: 34em; font-size: clamp(17px, 1.6vw, 20px); color: var(--dim); }
.hero__actions { margin-top: 56px; display: flex; flex-wrap: wrap; gap: 14px; }
.dl { display: inline-flex; align-items: center; gap: 14px; min-width: 260px; padding: 16px 22px; border-radius: 12px; text-decoration: none;
  border: 1px solid var(--line-strong); transition: background 0.15s ease, color 0.15s ease; }
.dl .icn { width: 24px; height: 24px; }
.dl span { display: flex; flex-direction: column; line-height: 1.25; }
.dl b { font-size: 16px; font-weight: 600; }
.dl small { font-size: 12.5px; color: var(--faint); font-variant-numeric: tabular-nums; }
.dl--android { background: var(--text); color: var(--bg); border-color: var(--text); }
.dl--android small { color: #55555c; }
.dl--android:hover { background: #fff; }
.dl--win:hover { background: rgba(255, 255, 255, 0.05); }
.alt-links { margin-top: 28px; display: flex; flex-wrap: wrap; gap: 12px; font-size: 14.5px; color: var(--faint); }
.alt-links a { color: var(--dim); text-decoration: underline; text-decoration-color: var(--line-strong); text-underline-offset: 4px; }
.alt-links a:hover { color: var(--text); text-decoration-color: var(--text); }
.hero__ver { margin-top: 18px; font-size: 13px; color: var(--faint); }
.hero__ver b { color: var(--dim); font-weight: 600; }

/* --- Секции --- */
.section { padding: 112px 0; border-top: 1px solid var(--line); }
.section h2 { font-size: clamp(30px, 4vw, 44px); line-height: 1.1; font-weight: 700; letter-spacing: -0.025em; }
.section__lead { margin-top: 16px; color: var(--dim); }
.grid3 { margin-top: 56px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 48px; }
.grid3 h3 { font-size: 17px; font-weight: 600; margin-bottom: 10px; }
.grid3 p { color: var(--dim); font-size: 15px; }
.changes { margin-top: 48px; padding: 0; list-style: none; counter-reset: c; display: grid; grid-template-columns: 1fr 1fr; gap: 0 56px; }
.changes li { counter-increment: c; padding: 22px 0 22px 44px; border-top: 1px solid var(--line); position: relative; color: var(--dim); font-size: 15px; }
.changes li::before { content: counter(c, decimal-leading-zero); position: absolute; left: 0; top: 24px; font-size: 12px; color: var(--faint); font-variant-numeric: tabular-nums; }
.changes b { color: var(--text); font-weight: 600; }
.steps { margin-top: 48px; padding: 0; list-style: none; display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.steps li { padding: 24px; border: 1px solid var(--line); border-radius: 12px; display: flex; flex-direction: column; gap: 18px; }
.steps__n { width: 32px; height: 32px; border-radius: 50%; border: 1px solid var(--line-strong); display: grid; place-items: center; font-size: 14px; font-weight: 600; }
.steps p { color: var(--dim); font-size: 15px; }

/* --- Подвал --- */
.footer { max-width: var(--wrap); margin: 0 auto; padding: 40px 32px 56px; border-top: 1px solid var(--line); display: flex; flex-wrap: wrap; justify-content: space-between; gap: 16px; font-size: 13px; color: var(--faint); }
.footer nav { display: flex; gap: 24px; }
.footer a { color: var(--dim); text-decoration: none; }
.footer a:hover { color: var(--text); }

/* --- Подсказка Safari --- */
.ios-hint { position: fixed; left: 12px; right: 12px; bottom: max(12px, env(safe-area-inset-bottom)); z-index: 20; display: flex; align-items: center; gap: 12px;
  padding: 14px 14px 14px 16px; background: var(--panel); border: 1px solid var(--line-strong); border-radius: 12px; font-size: 14px; }
.ios-hint p { flex: 1; color: var(--dim); }
.ios-hint button { background: none; border: 0; color: var(--dim); padding: 6px; cursor: pointer; display: grid; place-items: center; }

/* --- Мобильные --- */
@media (max-width: 768px) {
  .nav { padding: 20px; }
  .nav__links a:not(.nav__cta), .nav__ver { display: none; }
  .nav__links { gap: 14px; }
  main { padding: 0 20px; }
  .hero { padding: 64px 0 88px; }
  .hero__actions { flex-direction: column; }
  .dl { width: 100%; min-width: 0; }
  .section { padding: 72px 0; }
  .grid3, .changes, .steps { grid-template-columns: 1fr; gap: 0; }
  .grid3 { gap: 32px; }
  .steps { gap: 12px; }
  .footer { padding: 32px 20px 48px; flex-direction: column; }
}
/* --- 0.1.7 · подробности из прошлых версий в том же монохроме --- */
.kicker { font-size: 12.5px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--faint); margin-bottom: 18px; }
.tags { margin: 40px 0 0; padding: 0; list-style: none; display: flex; flex-wrap: wrap; gap: 8px; }
.tags li { font-size: 13px; color: var(--dim); padding: 6px 12px; border: 1px solid var(--line); border-radius: 999px; }
.tags--mono li { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 12.5px; }

/* Макет окна — статичный, без теней-свечений */
.preview { padding: 0 0 120px; }
.mock { border: 1px solid var(--line-strong); border-radius: 14px; overflow: hidden; background: var(--panel); font-size: 13px; line-height: 1.4; user-select: none; }
.mock .icn { width: 15px; height: 15px; }
.mock__bar { display: flex; align-items: center; gap: 7px; padding: 11px 14px; border-bottom: 1px solid var(--line); color: var(--faint); font-size: 12px; }
.mock__bar i { width: 10px; height: 10px; border-radius: 50%; background: #2a2a2e; }
.mock__bar span { margin-left: 10px; }
.mock__bar em { margin-left: auto; font-style: normal; font-variant-numeric: tabular-nums; }
.mock__body { display: grid; grid-template-columns: 300px 1fr; min-height: 440px; }
.mock__side { border-right: 1px solid var(--line); display: flex; flex-direction: column; padding: 12px; gap: 12px; }
.mock__search { display: flex; align-items: center; gap: 8px; padding: 9px 11px; border-radius: 10px; background: #18181b; color: var(--faint); }
.mock__stories { display: flex; gap: 10px; }
.mock__stories b { width: 38px; height: 38px; border-radius: 50%; display: grid; place-items: center; background: #2a2a2e; font-weight: 600; font-size: 12px; color: #e4e4e7; box-shadow: 0 0 0 2px var(--panel), 0 0 0 3.5px #3a3a40; }
.mock__stories b.is-ring { box-shadow: 0 0 0 2px var(--panel), 0 0 0 3.5px #d4d4d8; }
.mock__stories b:first-child { font-size: 10.5px; box-shadow: none; border: 1px dashed var(--line-strong); background: transparent; color: var(--dim); }
.mock__list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 2px; flex: 1; }
.mock__list li { display: grid; grid-template-columns: 36px 1fr auto; align-items: center; gap: 10px; padding: 8px; border-radius: 10px; position: relative; }
.mock__list li.is-active { background: #1e1e22; outline: 1px solid var(--line); }
.mock__list b, .mock__chat header b { width: 36px; height: 36px; border-radius: 50%; display: grid; place-items: center; background: #2a2a2e; color: #e4e4e7; font-weight: 600; }
.mock__list span { min-width: 0; display: flex; flex-direction: column; }
.mock__list strong { font-weight: 600; color: var(--text); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.mock__list small { color: var(--faint); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.mock__list time { align-self: start; margin-top: 3px; font-size: 11px; color: var(--faint); }
.mock__list em { position: absolute; right: 8px; bottom: 9px; font-style: normal; font-size: 10.5px; font-weight: 700; min-width: 18px; height: 18px; border-radius: 9px; display: grid; place-items: center; background: #e4e4e7; color: #0f0f10; }
.mock__new { text-align: center; padding: 10px; border: 1px solid var(--line-strong); border-radius: 10px; font-weight: 600; }
.mock__chat { display: flex; flex-direction: column; background: var(--bg); }
.mock__chat header { display: flex; align-items: center; gap: 10px; padding: 10px 16px; border-bottom: 1px solid var(--line); background: var(--panel); }
.mock__chat header span { display: flex; flex-direction: column; }
.mock__chat header strong { font-weight: 600; }
.mock__chat header small { color: var(--faint); font-size: 12px; }
.mock__msgs { flex: 1; padding: 16px 20px; display: flex; flex-direction: column; gap: 8px; }
.mock__day { align-self: center; font-size: 11.5px; color: var(--dim); padding: 3px 10px; border: 1px solid var(--line); border-radius: 999px; background: #1b1b1e; }
.m { max-width: 62%; padding: 8px 12px; border-radius: 14px; position: relative; color: var(--text); }
.m time { display: inline-block; margin-left: 10px; font-size: 10.5px; color: var(--faint); vertical-align: bottom; }
.m--in { align-self: flex-start; background: #1b1b1e; border: 1px solid var(--line); }
.m--out { align-self: flex-end; background: #2a2a2e; }
.m__ed { color: var(--faint); opacity: 0.8; }
.m__react { position: absolute; left: 10px; bottom: -11px; font-size: 11px; padding: 1px 7px; border-radius: 999px; background: #1b1b1e; border: 1px solid var(--line-strong); color: var(--dim); }
.m--voice { display: flex; align-items: center; gap: 10px; }
.m--voice .icn { width: 26px; height: 26px; padding: 6px; border-radius: 50%; background: #e4e4e7; color: #111113; }
.bars { display: flex; align-items: center; gap: 2.5px; height: 22px; }
.bars i { width: 3px; border-radius: 2px; background: rgba(255, 255, 255, 0.26); height: 40%; }
.bars i:nth-child(3n) { height: 85%; } .bars i:nth-child(4n+1) { height: 60%; } .bars i:nth-child(-n+6) { background: #e4e4e7; }
.m--call { display: flex; flex-direction: column; gap: 2px; min-width: 220px; border: 1px solid var(--line-strong); background: #1b1b1e; }
.m--call small { color: var(--faint); font-size: 11px; letter-spacing: 0.04em; text-transform: uppercase; }
.m--call strong { font-size: 20px; font-weight: 700; letter-spacing: -0.01em; }
.m--call span { color: var(--dim); font-size: 12px; }
.mock__chat footer { display: flex; align-items: center; gap: 10px; margin: 0 14px 14px; padding: 10px 10px 10px 14px; border: 1px solid var(--line); border-radius: 12px; background: var(--panel); color: var(--faint); }
.mock__chat footer span { flex: 1; }
.mock__chat footer b { width: 30px; height: 30px; border-radius: 50%; display: grid; place-items: center; background: #e9e9eb; color: #0f0f10; font-size: 18px; }

/* Возможности */
.feats { margin-top: 56px; display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.feats article { padding: 28px 28px 32px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.feats .icn, .plats .icn { width: 24px; height: 24px; color: var(--text); margin-bottom: 18px; }
.feats h3, .plats h3, .flow h3 { font-size: 16.5px; font-weight: 600; margin-bottom: 8px; }
.feats p, .plats p, .flow p { color: var(--dim); font-size: 14.5px; }

/* Защита */
.spec { margin: 64px 0 0; display: grid; grid-template-columns: 1fr 1fr; gap: 0 56px; }
.spec > div { padding: 22px 0; border-top: 1px solid var(--line); }
.spec dt { display: flex; align-items: center; gap: 12px; font-weight: 600; font-size: 15.5px; }
.spec dt .icn { color: var(--dim); }
.spec dd { margin: 8px 0 0 32px; color: var(--dim); font-size: 14.5px; }

/* Как это работает */
.flow { margin-top: 56px; padding: 0; list-style: none; display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; }
.flow li { border-top: 1px solid var(--line-strong); padding-top: 22px; }
.flow span { display: block; font-size: 12px; color: var(--faint); font-variant-numeric: tabular-nums; margin-bottom: 14px; }

/* Цифры */
.nums { margin: 56px 0 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; }
.nums dt { font-size: clamp(40px, 5vw, 60px); font-weight: 700; letter-spacing: -0.03em; line-height: 1; font-variant-numeric: tabular-nums; }
.nums dd { margin: 14px 0 0; color: var(--dim); font-size: 14.5px; max-width: 16em; }

/* Оформление */
.split { margin-top: 32px; display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }
.split .section__lead { margin-top: 0; }
.checks { margin: 0; padding: 0; list-style: none; }
.checks li { padding: 12px 0 12px 28px; border-top: 1px solid var(--line); color: var(--dim); font-size: 15px; position: relative; }
.checks li::before { content: ""; position: absolute; left: 2px; top: 19px; width: 10px; height: 5px; border-left: 1.5px solid var(--text); border-bottom: 1.5px solid var(--text); transform: rotate(-45deg); }

/* Платформы */
.plats { margin-top: 56px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.plats article { padding: 26px 24px; border: 1px solid var(--line); border-radius: 12px; }
.textlink { color: var(--text); text-decoration: underline; text-decoration-color: var(--line-strong); text-underline-offset: 3px; }

/* История версий */
.past { margin-top: 40px; border-top: 1px solid var(--line); }
.past summary { cursor: pointer; padding: 20px 0; color: var(--dim); font-size: 15px; list-style: none; display: flex; align-items: center; gap: 10px; }
.past summary::-webkit-details-marker { display: none; }
.past summary::before { content: "+"; width: 22px; height: 22px; border: 1px solid var(--line-strong); border-radius: 50%; display: grid; place-items: center; font-size: 14px; line-height: 1; }
.past[open] summary::before { content: "–"; }
.past summary:hover { color: var(--text); }
.past__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; padding: 8px 0 8px; }
.past h3 { font-size: 17px; font-weight: 600; margin-bottom: 12px; }
.past h3 small { font-weight: 400; color: var(--faint); font-size: 13px; margin-left: 6px; }
.past ul { margin: 0; padding: 0 0 0 18px; color: var(--dim); font-size: 14.5px; }
.past li { margin-bottom: 8px; }
.past li::marker { color: var(--faint); }

.changes__h { margin-top: 56px; font-size: 13px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--faint); font-weight: 600; }
.changes__h + .changes { margin-top: 20px; }
/* Финальный призыв */
.final { text-align: left; }
.final__links { margin-top: 36px; display: flex; flex-wrap: wrap; gap: 12px; }
.final__btn { text-decoration: none; padding: 13px 22px; border-radius: 12px; font-weight: 600; background: var(--text); color: var(--bg); border: 1px solid var(--text); }
.final__btn:hover { background: #fff; }
.final__btn--ghost { background: transparent; color: var(--text); border-color: var(--line-strong); }
.final__btn--ghost:hover { background: rgba(255, 255, 255, 0.05); }

@media (max-width: 980px) {
  .mock__body { grid-template-columns: 240px 1fr; }
  .feats { grid-template-columns: 1fr 1fr; }
  .flow, .nums, .plats { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .preview { padding-bottom: 72px; }
  .mock__body { grid-template-columns: 1fr; min-height: 0; }
  .mock__chat { display: none; }
  .mock__side { border-right: 0; }
  .feats { grid-template-columns: 1fr; }
  .feats article { padding: 22px 20px 24px; }
  .spec, .split, .past__grid { grid-template-columns: 1fr; gap: 0; }
  .split { gap: 28px; }
  .past__grid { gap: 28px; }
  .flow { grid-template-columns: 1fr; gap: 24px; }
  .nums { grid-template-columns: 1fr 1fr; gap: 28px 20px; }
  .plats { grid-template-columns: 1fr; gap: 12px; }
  .final__links { flex-direction: column; }
  .final__btn { text-align: center; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }