/* Kassistant AI — общие стили сайта */
:root {
  --brand: #1d64d8;
  --brand-dark: #154fb0;
  --brand-soft: #eaf1fd;
  --brand-line: #c3d6f6;
  --brand-light: #7fb2ff;
  --up: #1f8f3e;
  --red: #d64545;
  --ink: #16191d;
  --ink-2: #4b535d;
  --ink-3: #7c858f;
  --line: #e3e6ea;
  --bg: #ffffff;
  --bg-2: #f4f6fa;
  --card: #ffffff;
  --shadow: 0 10px 30px rgba(22, 25, 29, .10);
  --radius: 16px;
  --font: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color-scheme: light;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { margin: 0; font: 16px/1.55 var(--font); color: var(--ink); background: var(--bg); }
img, svg { max-width: 100%; }
a { color: var(--brand-dark); }
a:hover { color: var(--brand); }
h1, h2, h3 { line-height: 1.15; letter-spacing: -.02em; margin: 0 0 .5em; }
h1 { font-size: clamp(34px, 5.4vw, 60px); font-weight: 800; }
h2 { font-size: clamp(26px, 3.4vw, 38px); font-weight: 800; }
h3 { font-size: 19px; font-weight: 700; }
p { margin: 0 0 1em; }
.muted { color: var(--ink-2); }
.small { font-size: 13px; color: var(--ink-3); }
.wrap { max-width: 1160px; margin: 0 auto; padding: 0 20px; }
section { padding: 72px 0; }
section.alt { background: var(--bg-2); }
.eyebrow { display: inline-block; font-size: 13px; font-weight: 700; color: var(--brand-dark); text-transform: uppercase; letter-spacing: .08em; margin-bottom: 10px; }
.lead { font-size: clamp(17px, 2vw, 21px); color: var(--ink-2); max-width: 720px; }
.skip { position: absolute; left: -999px; }
.skip:focus { left: 12px; top: 12px; z-index: 100; background: #fff; padding: 8px 12px; }

/* Кнопки */
.btn { display: inline-flex; align-items: center; gap: 8px; border: 0; border-radius: 12px; padding: 13px 20px; font: 600 16px/1 var(--font); cursor: pointer; text-decoration: none; transition: background .15s, transform .1s; }
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--brand); color: #fff; }
.btn-primary:hover { background: var(--brand-dark); color: #fff; }
.btn-ghost { background: var(--brand-soft); color: var(--brand-dark); }
.btn-ghost:hover { background: #dde8fb; }
.btn-sm { padding: 8px 12px; font-size: 14px; border-radius: 10px; }
.chip { display: inline-block; border: 1px solid var(--brand-line); background: var(--brand-soft); color: var(--brand-dark); border-radius: 999px; padding: 6px 12px; font: 500 14px/1.3 var(--font); cursor: pointer; text-align: left; }
.chip:hover { background: #dde8fb; }
:focus-visible { outline: 3px solid var(--brand-light); outline-offset: 2px; }

/* Шапка */
.top { position: sticky; top: 0; z-index: 30; background: rgba(255,255,255,.92); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line); }
.top .wrap { display: flex; align-items: center; gap: 24px; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 20px; color: var(--ink); text-decoration: none; letter-spacing: -.02em; }
.brand img { width: 34px; height: 34px; }
.nav { display: flex; gap: 22px; margin-left: auto; }
.nav a { color: var(--ink-2); text-decoration: none; font-weight: 500; font-size: 15px; }
.nav a:hover { color: var(--brand-dark); }
@media (max-width: 900px) { .nav { display: none; } .top .btn { margin-left: auto; } }

/* Герой */
.hero { padding: 64px 0 40px; }
.hero-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 48px; align-items: center; }
.hero h1 span { color: var(--brand); }
.hero .actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 28px 0 18px; }
.hero-card { background: var(--card); border: 1px solid var(--line); border-radius: 20px; box-shadow: var(--shadow); padding: 18px; }
.hero-card .q { margin-left: auto; max-width: 85%; background: var(--brand); color: #fff; padding: 10px 14px; border-radius: 14px 14px 4px 14px; font-size: 15px; }
.hero-card .a { margin-top: 12px; background: var(--bg-2); padding: 12px 14px; border-radius: 14px 14px 14px 4px; font-size: 15px; }
.hero-card .src { margin-top: 8px; font-size: 12px; color: var(--ink-3); }
@media (max-width: 900px) { .hero-grid { grid-template-columns: 1fr; } }

.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; border-top: 1px solid var(--ink); margin-top: 48px; }
.stat { padding: 22px 22px 0 0; }
.stat + .stat { padding-left: 22px; border-left: 1px solid var(--line); }
.stat b { display: block; font-size: clamp(32px, 4.5vw, 48px); font-weight: 800; letter-spacing: -.03em; line-height: 1.1; }
.stat span { color: var(--ink-2); font-size: 14px; }
@media (max-width: 700px) { .stats { grid-template-columns: 1fr; } .stat + .stat { padding-left: 0; border-left: 0; border-top: 1px solid var(--line); } }

/* Сетки карточек */
.grid { display: grid; gap: 20px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
@media (max-width: 900px) { .grid-3 { grid-template-columns: 1fr; } }
@media (max-width: 700px) { .grid-2 { grid-template-columns: 1fr; } }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; }
.card .num { color: var(--brand); font-weight: 800; font-size: 14px; margin-bottom: 8px; }
.card .icon { width: 40px; height: 40px; border-radius: 10px; background: var(--brand-soft); color: var(--brand-dark); display: grid; place-items: center; margin-bottom: 14px; }
.card .icon svg { width: 22px; height: 22px; }
.card p:last-child { margin-bottom: 0; }

/* Демо-витрина рынка */
.board { background: var(--card); border: 1px solid var(--line); border-radius: 20px; box-shadow: var(--shadow); overflow: hidden; }
.board-head { display: flex; flex-wrap: wrap; gap: 8px 16px; align-items: center; padding: 14px 18px; border-bottom: 1px solid var(--line); background: var(--bg-2); font-size: 14px; }
.board-head .live { margin-left: auto; background: var(--brand); color: #fff; font-size: 12px; font-weight: 600; padding: 4px 10px; border-radius: 999px; }
.ticker-row { display: flex; gap: 10px; overflow-x: auto; padding: 14px 18px; border-bottom: 1px solid var(--line); scrollbar-width: thin; }
.tick { flex: none; border: 1px solid var(--line); border-radius: 10px; padding: 6px 10px; font-size: 13px; background: #fff; cursor: help; white-space: nowrap; }
.tick b { margin-right: 6px; }
.up { color: var(--up); }
.down { color: var(--red); }
.tables { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; padding: 18px; }
@media (max-width: 700px) { .tables { grid-template-columns: 1fr; } }
.tables h3 { font-size: 16px; margin-bottom: 10px; }
.sec { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 11px 12px; border-radius: 10px; background: var(--bg-2); margin-bottom: 8px; cursor: help; border: 2px solid transparent; width: 100%; font: inherit; color: inherit; text-align: left; }
.sec:hover, .sec:focus-visible, .sec.active { border-color: var(--brand); background: #fff; }
.sec .code { font-weight: 700; }
.sec .px { text-align: right; font-size: 14px; }
.sec .px small { display: block; font-size: 12px; color: var(--ink-3); }

/* Всплывающая карточка тикера */
.tcard { position: fixed; z-index: 60; width: min(340px, calc(100vw - 24px)); background: #fff; border: 1px solid var(--line); border-radius: 16px; box-shadow: 0 16px 40px rgba(22,25,29,.18); padding: 16px; font-size: 14px; display: none; }
.tcard.open { display: block; }
.tcard .badge { display: inline-block; background: var(--brand-soft); color: var(--brand-dark); font-size: 12px; font-weight: 600; padding: 2px 8px; border-radius: 6px; margin-left: 6px; vertical-align: middle; }
.tcard .tt { font-size: 18px; font-weight: 800; }
.tcard .co { color: var(--ink-2); font-size: 13px; margin: 2px 0 10px; }
.tcard .price { font-size: 24px; font-weight: 800; letter-spacing: -.02em; }
.tcard .when { font-size: 12px; color: var(--ink-3); margin-bottom: 8px; }
.tcard .acts { display: flex; flex-wrap: wrap; gap: 6px; margin: 10px 0 8px; }
.tcard .foot { font-size: 11px; color: var(--ink-3); }
.term { border-bottom: 1px dashed var(--brand); cursor: help; }

/* Калькулятор */
.calc { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; align-items: start; }
@media (max-width: 900px) { .calc { grid-template-columns: 1fr; } }
.field { margin-bottom: 18px; }
.field label { display: flex; justify-content: space-between; font-weight: 600; margin-bottom: 8px; }
.field input[type=number], .field input[type=text], .field select, textarea { width: 100%; font: 16px var(--font); padding: 11px 12px; border: 1px solid var(--line); border-radius: 10px; background: #fff; color: var(--ink); }
.field input[type=range] { width: 100%; accent-color: var(--brand); }
.result-row { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; padding: 14px 0; border-bottom: 1px solid var(--line); }
.result-row b { font-size: 26px; letter-spacing: -.02em; white-space: nowrap; }

/* Граница справка/совет */
.dodont { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
@media (max-width: 700px) { .dodont { grid-template-columns: 1fr; } }
.dodont ul { list-style: none; padding: 0; margin: 0; }
.dodont li { padding: 12px 0 12px 34px; border-top: 1px solid var(--line); position: relative; }
.dodont li::before { position: absolute; left: 4px; top: 11px; font-weight: 800; }
.do li::before { content: "✓"; color: var(--brand); }
.dont li::before { content: "✕"; color: var(--red); }
.dodont h3.do-h { color: var(--brand-dark); }
.dodont h3.dont-h { color: var(--red); }

/* Аудитории */
.aud { display: grid; grid-template-columns: 180px 1fr 1fr; gap: 20px; padding: 22px 0; border-top: 1px solid var(--line); align-items: start; }
.aud:last-child { border-bottom: 1px solid var(--line); }
@media (max-width: 800px) { .aud { grid-template-columns: 1fr; gap: 8px; } }

/* Дорожная карта */
.road { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
@media (max-width: 900px) { .road { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .road { grid-template-columns: 1fr; } }
.road .step { border-top: 4px solid var(--brand-line); padding-top: 14px; }
.road .step.now { border-top-color: var(--brand); }
.road .step .when { font-size: 13px; color: var(--ink-3); font-weight: 600; }
.kpi { width: 100%; border-collapse: collapse; font-size: 15px; }
.kpi th, .kpi td { text-align: left; padding: 12px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
.kpi th { font-size: 13px; color: var(--ink-3); font-weight: 600; }
.table-scroll { overflow-x: auto; }

/* CTA опроса */
.cta { background: var(--brand); color: #fff; border-radius: 24px; padding: 40px; display: grid; grid-template-columns: 1fr auto; gap: 24px; align-items: center; }
.cta .btn { background: #fff; color: var(--brand-dark); }
.cta p { color: #e3edfd; margin: 0; }
@media (max-width: 700px) { .cta { grid-template-columns: 1fr; padding: 28px; } }

/* FAQ */
details { border-top: 1px solid var(--line); padding: 16px 0; }
details:last-of-type { border-bottom: 1px solid var(--line); }
summary { cursor: pointer; font-weight: 600; font-size: 17px; }
details p { margin: 10px 0 0; color: var(--ink-2); }

/* Подвал */
footer { background: #0f1729; color: #b4bfd3; padding: 40px 0; font-size: 14px; }
footer a { color: #d6e4fb; }
footer .brand { color: #fff; margin-bottom: 12px; }

/* ===== Чат ===== */
.chat-launch { position: fixed; right: 20px; bottom: 20px; z-index: 50; display: flex; align-items: center; gap: 10px; background: var(--brand); color: #fff; border: 0; border-radius: 999px; padding: 12px 18px 12px 12px; font: 600 16px var(--font); cursor: pointer; box-shadow: 0 10px 28px rgba(29,100,216,.35); }
.chat-launch img { width: 32px; height: 32px; background: #fff; border-radius: 50%; padding: 3px; }
.chat-launch:hover { background: var(--brand-dark); }
.chat-panel { position: fixed; right: 20px; bottom: 20px; z-index: 70; width: min(420px, calc(100vw - 24px)); height: min(680px, calc(100vh - 40px)); background: #fff; border-radius: 20px; box-shadow: 0 20px 60px rgba(22,25,29,.25); display: none; flex-direction: column; overflow: hidden; border: 1px solid var(--line); }
.chat-panel.open { display: flex; }
@media (max-width: 560px) { .chat-panel { right: 0; bottom: 0; width: 100vw; height: 100dvh; border-radius: 0; } }
.chat-head { background: var(--brand); color: #fff; padding: 12px 14px; display: flex; gap: 10px; align-items: center; }
.chat-head img { width: 32px; height: 32px; background: #fff; border-radius: 8px; padding: 3px; }
.chat-head .t { font-weight: 700; line-height: 1.2; }
.chat-head .s { font-size: 12px; opacity: .9; }
.chat-head .x { margin-left: auto; background: transparent; border: 0; color: #fff; font-size: 26px; line-height: 1; cursor: pointer; padding: 4px 8px; }
.chat-settings { display: flex; gap: 8px; padding: 8px 12px; border-bottom: 1px solid var(--line); background: var(--bg-2); }
.chat-settings select { flex: 1; font: 13px var(--font); padding: 6px 8px; border: 1px solid var(--line); border-radius: 8px; background: #fff; }
.chat-log { flex: 1; overflow-y: auto; padding: 14px; display: flex; flex-direction: column; gap: 12px; }
.msg { max-width: 92%; font-size: 15px; line-height: 1.5; overflow-wrap: anywhere; }
.msg.user { align-self: flex-end; background: var(--brand); color: #fff; padding: 10px 14px; border-radius: 16px 16px 4px 16px; white-space: pre-wrap; }
.msg.bot { align-self: flex-start; background: var(--bg-2); padding: 12px 14px; border-radius: 16px 16px 16px 4px; }
.msg.bot p { margin: 0 0 .6em; }
.msg.bot p:last-child { margin-bottom: 0; }
.msg.bot ul, .msg.bot ol { margin: 0 0 .6em; padding-left: 1.3em; }
.msg.bot h4 { margin: .4em 0 .3em; font-size: 15px; }
.msg.bot table { border-collapse: collapse; font-size: 13px; margin: 0 0 .6em; display: block; overflow-x: auto; }
.msg.bot th, .msg.bot td { border-bottom: 1px solid var(--line); padding: 5px 8px; text-align: left; }
.msg.bot code { background: #e9ece9; padding: 1px 5px; border-radius: 4px; font-size: 13px; }
.msg.bot hr { border: 0; border-top: 1px solid var(--line); margin: .8em 0; }
.msg.bot.err { background: #fdecec; color: #8c2323; }
.msg .notice { margin-top: 8px; font-size: 12px; color: var(--ink-2); background: #fff7df; padding: 6px 8px; border-radius: 8px; }
.msg .rate { display: flex; gap: 6px; margin-top: 8px; }
.msg .rate button { border: 1px solid var(--line); background: #fff; border-radius: 8px; font-size: 12px; padding: 4px 8px; cursor: pointer; color: var(--ink-2); }
.msg .rate button:hover { border-color: var(--brand); }
.msg .rate button[disabled] { opacity: .6; cursor: default; }
.typing::after { content: "▍"; animation: blink 1s steps(1) infinite; color: var(--brand); }
@keyframes blink { 50% { opacity: 0; } }
.chat-suggest { display: flex; flex-wrap: wrap; gap: 6px; padding: 0 14px 10px; }
.chat-form { display: flex; gap: 8px; padding: 10px 12px; border-top: 1px solid var(--line); }
.chat-form textarea { flex: 1; resize: none; height: 44px; max-height: 120px; padding: 10px 12px; font-size: 15px; }
.chat-form button { flex: none; width: 44px; height: 44px; border-radius: 12px; border: 0; background: var(--brand); color: #fff; cursor: pointer; display: grid; place-items: center; }
.chat-form button[disabled] { background: #9dbcef; cursor: default; }
.chat-foot { font-size: 11px; color: var(--ink-3); padding: 0 12px 10px; text-align: center; }

/* Опрос */
.survey { max-width: 760px; }
.q { padding: 22px 0; border-top: 1px solid var(--line); }
.q h3 { font-size: 17px; }
.q.invalid h3 { color: var(--red); }
.opts { display: grid; gap: 8px; }
.opt { display: flex; gap: 10px; align-items: flex-start; padding: 10px 12px; border: 1px solid var(--line); border-radius: 10px; cursor: pointer; }
.opt:hover { border-color: var(--brand-line); }
.opt input { accent-color: var(--brand); margin-top: 4px; }
.opt:has(input:checked) { border-color: var(--brand); background: var(--brand-soft); }
.scale { display: flex; flex-wrap: wrap; gap: 6px; }
.scale label { min-width: 42px; text-align: center; padding: 9px 0; border: 1px solid var(--line); border-radius: 10px; cursor: pointer; font-weight: 600; }
.scale input { position: absolute; opacity: 0; pointer-events: none; }
.scale label:has(input:checked) { background: var(--brand); color: #fff; border-color: var(--brand); }
.scale label:has(input:focus-visible) { outline: 3px solid var(--brand-light); }
.scale-ends { display: flex; justify-content: space-between; font-size: 13px; color: var(--ink-3); margin-top: 6px; }
.na { display: inline-flex; gap: 8px; margin-top: 10px; font-size: 14px; color: var(--ink-2); }
.form-msg { padding: 14px 16px; border-radius: 12px; margin: 16px 0; }
.form-msg.err { background: #fdecec; color: #8c2323; }
.form-msg.ok { background: var(--brand-soft); color: var(--brand-dark); }

/* Переключатель языка */
.lang-switch { display: flex; border: 1px solid var(--line); border-radius: 10px; overflow: hidden; flex: none; }
.lang-switch button { border: 0; background: #fff; color: var(--ink-2); font: 600 13px/1 var(--font); padding: 8px 9px; cursor: pointer; }
.lang-switch button + button { border-left: 1px solid var(--line); }
.lang-switch button:hover { color: var(--brand-dark); background: var(--brand-soft); }
.lang-switch button[aria-pressed="true"] { background: var(--brand); color: #fff; }
@media (max-width: 900px) { .lang-switch { margin-left: auto; } .top .btn { margin-left: 0; } .top .wrap { gap: 12px; } }
@media (max-width: 440px) { .top .brand span { display: none; } }
.calc > * { min-width: 0; }
.result-row b { white-space: normal; text-align: right; }