/* Сайт продукта Witstaff (witstaff.kz). Цвета — брендбук: тёмно-синий #1E3A8A, графит #101828, золото #C8A24A. */
:root {
  --brand: #1e3a8a;
  --brand-2: #2b4aa3;
  --brand-50: #eef1f8;
  --ink: #101828;
  --ink-2: #344054;
  --muted: #5b6475;
  --line: #e4e7ec;
  --bg: #f5f6f8;
  --gold: #c8a24a;
  --gold-50: #f8f3e6;
  --ok: #166534;
  --radius: 18px;
  --shadow: 0 1px 2px rgba(16, 24, 40, 0.04), 0 12px 32px -12px rgba(16, 24, 40, 0.14);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; }
body { margin: 0; font-family: Inter, ui-sans-serif, system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif; color: var(--ink); background: #fff; font-size: 17px; line-height: 1.55; -webkit-font-smoothing: antialiased; }
img, svg { display: block; }
a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3 { margin: 0; letter-spacing: -0.02em; line-height: 1.12; }
h1 { font-size: clamp(36px, 5.2vw, 60px); font-weight: 800; }
h2 { font-size: clamp(28px, 3.4vw, 40px); font-weight: 800; max-width: 760px; }
h3 { font-size: 19px; font-weight: 700; }
p { margin: 0; }
.wrap { width: min(1160px, 100% - 40px); margin: 0 auto; }
.narrow { width: min(780px, 100% - 40px); }
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 16px; top: 12px; z-index: 100; background: #fff; padding: 8px 12px; border-radius: 8px; }
.muted { color: var(--muted); }
.small { font-size: 14px; }

/* Кнопки */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; height: 42px; padding: 0 18px; border-radius: 12px; font-weight: 600; font-size: 15px; border: 1px solid transparent; cursor: pointer; transition: background 0.15s, border-color 0.15s, transform 0.15s; white-space: nowrap; font-family: inherit; }
.btn:hover { text-decoration: none; }
.btn:active { transform: translateY(1px); }
.btn.lg { height: 52px; padding: 0 26px; font-size: 16px; border-radius: 14px; }
.btn.primary { background: var(--brand); color: #fff; }
.btn.primary:hover { background: var(--brand-2); }
.btn.ghost { background: #fff; color: var(--ink); border-color: var(--line); }
.btn.ghost:hover { border-color: #c4cad6; background: #fafbfc; }
.btn:focus-visible, a:focus-visible, summary:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible, .burger:focus-visible { outline: 3px solid rgba(30, 58, 138, 0.35); outline-offset: 2px; }

/* Шапка */
.top { position: sticky; top: 0; z-index: 20; background: rgba(255, 255, 255, 0.86); backdrop-filter: saturate(180%) blur(14px); -webkit-backdrop-filter: saturate(180%) blur(14px); border-bottom: 1px solid transparent; transition: border-color 0.2s; }
.top.scrolled { border-bottom-color: var(--line); }
.top-in { display: flex; align-items: center; gap: 28px; height: 72px; }
.logo { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); }
.logo:hover { text-decoration: none; }
.logo svg { width: 34px; height: 34px; }
.logo span { font-size: 23px; letter-spacing: -0.03em; }
.logo .w { color: var(--brand); font-weight: 800; }
.logo .s { color: var(--ink); font-weight: 800; }
.nav { display: flex; gap: 26px; margin-left: 8px; }
.nav a { color: var(--ink-2); font-size: 15px; font-weight: 500; }
.nav a:hover { color: var(--brand); text-decoration: none; }
.nav-demo { display: none; }
.top-actions { margin-left: auto; display: flex; gap: 10px; align-items: center; }
.burger { display: none; width: 42px; height: 42px; border: 1px solid var(--line); border-radius: 12px; background: #fff; cursor: pointer; padding: 0; flex-direction: column; align-items: center; justify-content: center; gap: 5px; }
.burger span { width: 18px; height: 2px; background: var(--ink); border-radius: 2px; transition: transform 0.2s; }
.burger[aria-expanded='true'] span:first-child { transform: translateY(3.5px) rotate(45deg); }
.burger[aria-expanded='true'] span:last-child { transform: translateY(-3.5px) rotate(-45deg); }

/* Первый экран */
.hero { position: relative; overflow: hidden; padding: 72px 0 88px; background: radial-gradient(900px 480px at 85% 0%, rgba(30, 58, 138, 0.09), transparent 70%), radial-gradient(600px 360px at 0% 100%, rgba(200, 162, 74, 0.08), transparent 70%); }
.hero-in { display: grid; grid-template-columns: 1.02fr 1fr; gap: 56px; align-items: center; }
.kicker { display: inline-flex; align-items: center; gap: 8px; font-size: 14px; font-weight: 600; color: #8a6d24; background: var(--gold-50); border: 1px solid #ecdfbd; padding: 6px 12px; border-radius: 999px; margin-bottom: 22px; }
.spark { display: inline-block; width: 12px; height: 12px; background: var(--gold); clip-path: polygon(50% 0, 62% 38%, 100% 50%, 62% 62%, 50% 100%, 38% 62%, 0 50%, 38% 38%); flex: none; }
.lead { font-size: 19px; color: var(--ink-2); margin-top: 20px; max-width: 560px; }
.cta { display: flex; gap: 12px; margin-top: 32px; flex-wrap: wrap; }
.trust { list-style: none; display: flex; flex-wrap: wrap; gap: 8px 22px; padding: 0; margin: 34px 0 0; color: var(--muted); font-size: 14px; font-weight: 600; }
.trust li::before { content: ''; display: inline-block; width: 6px; height: 6px; border-radius: 50%; background: var(--brand); opacity: 0.35; margin-right: 8px; vertical-align: 2px; }

/* Макет интерфейса */
.mock { background: #fff; border: 1px solid var(--line); border-radius: 20px; box-shadow: 0 30px 70px -30px rgba(16, 24, 40, 0.35), 0 2px 6px rgba(16, 24, 40, 0.05); overflow: hidden; font-size: 13px; transform: perspective(1600px) rotateY(-4deg) rotateX(2deg); }
.mock-bar { display: flex; align-items: center; gap: 6px; padding: 10px 14px; border-bottom: 1px solid var(--line); background: #fafbfc; }
.mock-bar i { width: 10px; height: 10px; border-radius: 50%; background: #e4e7ec; }
.mock-bar span { margin-left: 12px; font-size: 12px; color: var(--muted); background: #fff; border: 1px solid var(--line); border-radius: 8px; padding: 2px 10px; }
.mock-body { display: grid; grid-template-columns: 150px 1fr; min-height: 340px; }
.mock-side { background: var(--ink); color: #c8cdd8; padding: 16px 10px; display: flex; flex-direction: column; gap: 3px; }
.mock-logo { color: #fff; font-size: 16px; letter-spacing: -0.03em; padding: 0 8px 12px; }
.mock-side span { padding: 7px 8px; border-radius: 8px; }
.mock-side .on { background: rgba(255, 255, 255, 0.1); color: #fff; font-weight: 600; }
.mock-main { padding: 16px; background: var(--bg); display: flex; flex-direction: column; gap: 9px; }
.mock-kpis { display: grid; grid-template-columns: repeat(3, 1fr); gap: 9px; margin-bottom: 3px; }
.mock-kpis div { background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 10px 12px; }
.mock-kpis b { display: block; font-size: 22px; letter-spacing: -0.02em; }
.mock-kpis small { color: var(--muted); font-size: 11px; line-height: 1.3; display: block; }
.mock-row { display: flex; align-items: center; gap: 10px; background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 9px 12px; }
.mock-row b { display: block; font-size: 13px; }
.mock-row small { color: var(--muted); font-size: 11.5px; }
.av { width: 30px; height: 30px; border-radius: 50%; background: var(--brand-50); color: var(--brand); font-weight: 700; font-size: 11px; display: grid; place-items: center; flex: none; }
.st { margin-left: auto; font-style: normal; font-size: 11px; font-weight: 600; padding: 3px 9px; border-radius: 999px; background: #f2f4f7; color: var(--ink-2); white-space: nowrap; }
.st.ok { background: #dcfce7; color: var(--ok); }
.st.blue { background: var(--brand-50); color: var(--brand); }
.mock-ai { display: flex; gap: 8px; align-items: flex-start; background: var(--gold-50); border: 1px solid #ecdfbd; color: #5c4815; border-radius: 12px; padding: 10px 12px; font-size: 12px; line-height: 1.4; }
.mock-ai .spark { margin-top: 2px; }

/* Полоса фактов */
.facts { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: #fff; }
.facts-in { display: grid; grid-template-columns: repeat(4, 1fr); }
.facts-in div { padding: 26px 22px; border-left: 1px solid var(--line); }
.facts-in div:first-child { border-left: 0; padding-left: 0; }
.facts-in b { display: block; font-size: 22px; color: var(--brand); letter-spacing: -0.02em; }
.facts-in span { color: var(--muted); font-size: 14.5px; }

/* Блоки */
.block { padding: 104px 0; }
.block.tint { background: var(--bg); }
.eyebrow { font-size: 13px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.09em; color: var(--brand); margin-bottom: 14px; }
.eyebrow.gold { color: var(--gold); }
.sub { color: var(--muted); font-size: 18px; margin-top: 16px; max-width: 640px; }
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 48px; }
.card { border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; background: #fff; transition: border-color 0.2s, box-shadow 0.2s, transform 0.2s; }
.card:hover { border-color: #cfd6e4; box-shadow: var(--shadow); transform: translateY(-2px); }
.ic { width: 42px; height: 42px; padding: 9px; border-radius: 12px; background: var(--brand-50); stroke: var(--brand); fill: none; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; margin-bottom: 18px; }
.card p { color: var(--ink-2); font-size: 15.5px; margin-top: 8px; }
.card ul, .plan ul { list-style: none; padding: 0; margin: 16px 0 0; display: grid; gap: 7px; }
.card li, .plan li { font-size: 14.5px; color: var(--ink-2); padding-left: 22px; position: relative; }
.card li::before, .plan li::before { content: ''; position: absolute; left: 2px; top: 7px; width: 10px; height: 6px; border-left: 2px solid var(--brand); border-bottom: 2px solid var(--brand); transform: rotate(-45deg); }

/* ИИ */
.block.dark { background: var(--ink); color: #fff; position: relative; overflow: hidden; }
.block.dark::after { content: ''; position: absolute; right: -120px; top: -120px; width: 460px; height: 460px; border-radius: 50%; background: radial-gradient(circle, rgba(30, 58, 138, 0.55), transparent 70%); pointer-events: none; }
.block.dark .sub { color: #aab2c2; }
.split { display: grid; grid-template-columns: 1fr 1.1fr; gap: 64px; align-items: start; position: relative; z-index: 1; }
.ai-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 2px; }
.ai-list li { display: grid; grid-template-columns: 22px 1fr; column-gap: 12px; padding: 18px 0; border-bottom: 1px solid rgba(255, 255, 255, 0.1); }
.ai-list li::before { content: ''; grid-row: span 2; width: 12px; height: 12px; margin-top: 6px; background: var(--gold); clip-path: polygon(50% 0, 62% 38%, 100% 50%, 62% 62%, 50% 100%, 38% 62%, 0 50%, 38% 38%); }
.ai-list b { font-size: 17.5px; }
.ai-list span { color: #aab2c2; font-size: 15.5px; }

/* Внедрение */
.steps { list-style: none; counter-reset: s; padding: 0; margin: 44px 0 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.steps li { counter-increment: s; border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; position: relative; }
.steps li::before { content: counter(s); display: grid; place-items: center; width: 34px; height: 34px; border-radius: 50%; background: var(--brand); color: #fff; font-weight: 700; font-size: 15px; margin-bottom: 16px; }
.steps b { display: block; font-size: 18px; }
.steps span { display: block; color: var(--ink-2); font-size: 15.5px; margin-top: 6px; }
.for { margin-top: 56px; }
.chips { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 10px; }
.chips li { border: 1px solid var(--line); border-radius: 999px; padding: 9px 16px; font-size: 15px; color: var(--ink-2); background: #fff; }

/* Безопасность */
.sec { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin-top: 44px; }
.sec div { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; border-top: 3px solid var(--brand); }
.sec b { display: block; font-size: 17px; }
.sec span { display: block; color: var(--ink-2); font-size: 15px; margin-top: 8px; }
.more { margin-top: 26px; font-size: 15.5px; color: var(--muted); }
.more a { font-weight: 600; }

/* Тарифы */
.plans { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 44px; align-items: stretch; }
.plan { border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 22px; position: relative; background: #fff; }
.plan.best { border-color: var(--brand); box-shadow: 0 0 0 1px var(--brand), var(--shadow); }
.badge { position: absolute; top: -12px; left: 22px; background: var(--gold); color: #fff; font-size: 12px; font-weight: 700; padding: 3px 10px; border-radius: 999px; }
.price { margin-top: 12px; color: var(--muted); font-size: 14.5px; }
.price { margin-top: 4px; }
.plans-cta { margin-top: 32px; text-align: center; }

/* Вопросы */
details { border-bottom: 1px solid var(--line); }
details:first-of-type { margin-top: 34px; border-top: 1px solid var(--line); }
summary { cursor: pointer; list-style: none; padding: 22px 40px 22px 0; font-size: 18px; font-weight: 600; position: relative; }
summary::-webkit-details-marker { display: none; }
summary::after { content: ''; position: absolute; right: 6px; top: 28px; width: 9px; height: 9px; border-right: 2px solid var(--muted); border-bottom: 2px solid var(--muted); transform: rotate(45deg); transition: transform 0.2s; }
details[open] summary::after { transform: rotate(-135deg); top: 32px; }
details p { color: var(--ink-2); padding: 0 40px 22px 0; }

/* Заявка */
.block.demo { background: linear-gradient(180deg, var(--bg), #fff); }
.demo-points { list-style: none; padding: 0; margin: 26px 0 0; display: grid; gap: 10px; }
.demo-points li { padding-left: 26px; position: relative; color: var(--ink-2); }
.demo-points li::before { content: ''; position: absolute; left: 2px; top: 8px; width: 11px; height: 6px; border-left: 2px solid var(--gold); border-bottom: 2px solid var(--gold); transform: rotate(-45deg); }
.form { background: #fff; border: 1px solid var(--line); border-radius: 22px; padding: 30px; box-shadow: var(--shadow); display: grid; gap: 16px; }
.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form label { display: grid; gap: 6px; font-size: 14px; font-weight: 600; color: var(--ink-2); }
.opt { font-weight: 400; color: var(--muted); }
.form input, .form select, .form textarea { font: inherit; font-size: 16px; font-weight: 400; color: var(--ink); border: 1px solid #d0d5dd; border-radius: 12px; padding: 11px 13px; background: #fff; width: 100%; transition: border-color 0.15s; }
.form input:focus, .form select:focus, .form textarea:focus { border-color: var(--brand); outline: none; box-shadow: 0 0 0 4px rgba(30, 58, 138, 0.12); }
.form textarea { resize: vertical; }
.form .invalid { border-color: #d92d20; }
.form .check { display: flex; gap: 10px; align-items: flex-start; font-weight: 400; font-size: 14px; color: var(--muted); }
.form .check input { width: 18px; height: 18px; margin: 2px 0 0; flex: none; accent-color: var(--brand); }
.hp { position: absolute !important; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.form-msg { font-size: 15px; min-height: 1px; }
.form-msg.err { color: #b42318; }
.form-msg.ok { color: var(--ok); font-weight: 600; }
.form.sent { text-align: center; padding: 56px 30px; }
.form.sent h3 { font-size: 24px; margin-bottom: 8px; }

/* Подвал */
.foot { border-top: 1px solid var(--line); padding: 40px 0; }
.foot-in { display: grid; grid-template-columns: auto 1fr auto; gap: 8px 28px; align-items: center; }
.foot-links { display: flex; gap: 22px; flex-wrap: wrap; justify-content: flex-end; }
.foot-links a { color: var(--ink-2); font-size: 15px; }
.foot-in .small { grid-column: 1 / -1; }

/* Появление при прокрутке */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .mock { transform: none; }
}

/* Планшет */
@media (max-width: 1040px) {
  .nav { gap: 18px; }
  .hero-in { grid-template-columns: 1fr; gap: 48px; }
  .mock { transform: none; max-width: 640px; }
  .cards { grid-template-columns: repeat(2, 1fr); }
  .sec, .plans { grid-template-columns: repeat(2, 1fr); }
  .split { grid-template-columns: 1fr; gap: 36px; }
}
/* Телефон */
@media (max-width: 760px) {
  body { font-size: 16px; }
  .top-in { height: 64px; gap: 12px; }
  .burger { display: inline-flex; }
  .hide-sm { display: none; }
  .nav { display: none; position: absolute; left: 0; right: 0; top: 64px; background: #fff; border-bottom: 1px solid var(--line); flex-direction: column; gap: 0; margin: 0; padding: 8px 20px 16px; box-shadow: 0 16px 24px -16px rgba(16, 24, 40, 0.2); }
  .nav.open { display: flex; }
  .nav .nav-demo { display: block; color: var(--brand); font-weight: 700; border-bottom: 0; }
  .nav a { padding: 12px 0; font-size: 17px; border-bottom: 1px solid #f2f4f7; }
  .hero { padding: 44px 0 64px; }
  .lead { font-size: 17px; }
  .cta .btn { flex: 1; }
  .mock-body { grid-template-columns: 1fr; }
  .mock-side { display: none; }
  .facts-in { grid-template-columns: 1fr 1fr; }
  .facts-in div { border-left: 0; padding: 20px 0; }
  .facts-in div:nth-child(odd) { padding-right: 14px; }
  .block { padding: 72px 0; }
  .cards, .sec, .plans, .steps, .row2 { grid-template-columns: 1fr; }
  .form { padding: 22px; }
  .foot-in { grid-template-columns: 1fr; }
  .foot-links { justify-content: flex-start; }
}