/* Stone & slate: soft neutral background, one muted slate-blue accent, flat and square. */
:root {
  --bg: #f7f7f6; --surf: #efefed; --card: #ffffff; --text: #25282d; --muted: #666b73;
  --line: #e1e2e0; --acc: #4f6478; --acc-strong: #3f5163; --acc-soft: #e5ebf0;
  --max: 1120px; --font: 'IBM Plex Sans', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
}
* { box-sizing: border-box; border-radius: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.65 var(--font); -webkit-font-smoothing: antialiased; overflow-x: hidden; }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; margin: 0; padding: 0; }
h2, h3, p { margin: 0; }
h2, h3 { font-weight: 600; letter-spacing: -.01em; overflow-wrap: break-word; }
h2 { font-size: clamp(1.75rem, 3.6vw, 2.4rem); line-height: 1.15; }
h3 { font-size: 1.08rem; line-height: 1.35; }
svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: square; stroke-linejoin: miter; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 20px; }
@media (min-width: 760px) { .wrap { padding: 0 40px; } }
:focus-visible { outline: 2px solid var(--acc); outline-offset: 2px; }

/* header: menu left, language + logo right */
.top { position: sticky; top: 0; z-index: 10; background: var(--bg); border-bottom: 1px solid var(--line); }
.top-in { display: flex; align-items: center; gap: 32px; height: 72px; }
.nav { display: flex; gap: 32px; font-size: .95rem; }
.nav a { color: var(--muted); transition: color .15s; }
.nav a:hover { color: var(--text); }
.langs { display: flex; margin-left: auto; border: 1px solid var(--line); font-size: .75rem; font-weight: 600; }
.langs a { padding: 5px 10px; color: var(--muted); }
.langs a + a { border-left: 1px solid var(--line); }
.langs a:hover { color: var(--text); }
.langs a[aria-current] { background: var(--text); color: var(--bg); }
.brand img { height: 34px; width: auto; }
.menu { display: none; place-items: center; width: 40px; height: 40px; padding: 0; border: 1px solid var(--line); background: var(--bg); cursor: pointer; }
.menu span, .menu span::before, .menu span::after { display: block; width: 16px; height: 2px; background: var(--text); content: ''; position: relative; transition: transform .2s; }
.menu span::before { position: absolute; top: -5px; } .menu span::after { position: absolute; top: 5px; }
.open .menu span { background: transparent; }
.open .menu span::before { transform: translateY(5px) rotate(45deg); } .open .menu span::after { transform: translateY(-5px) rotate(-45deg); }
@media (max-width: 859px) {
  .top-in { gap: 12px; }
  .menu { display: grid; }
  .brand img { height: 28px; }
  .nav { display: none; position: absolute; left: 0; right: 0; top: 72px; flex-direction: column; gap: 0; background: var(--bg); border-bottom: 1px solid var(--line); }
  .open .nav { display: flex; }
  .nav a { padding: 14px 20px; border-top: 1px solid var(--line); color: var(--text); }
}
@media (max-width: 360px) { .brand img { height: 24px; } .langs a { padding: 5px 8px; } }

/* sections */
.sec { padding: 88px 0; }
.sec.alt { background: var(--surf); }
@media (max-width: 759px) { .sec { padding: 56px 0; } }
.head { max-width: 560px; margin-bottom: 40px; }
.eyebrow { font-size: .75rem; font-weight: 600; letter-spacing: .12em; text-transform: uppercase; color: var(--acc); margin-bottom: 12px; }
.sub { color: var(--muted); margin-top: 12px; font-size: 1.05rem; }
@media (min-width: 960px) {
  .split { display: grid; grid-template-columns: 4fr 8fr; gap: 56px; align-items: start; }
  .split .head { margin-bottom: 0; }
}
.grid { display: grid; gap: 24px; }
.g3 { grid-template-columns: 1fr; }
.g2 { grid-template-columns: 1fr; }
@media (min-width: 620px) { .g3 { grid-template-columns: repeat(3, 1fr); } .g2 { grid-template-columns: repeat(2, 1fr); } }
.card { display: flex; flex-direction: column; gap: 10px; border-top: 2px solid var(--text); padding-top: 22px; }
.card p { color: var(--muted); font-size: .95rem; }
.num { font-size: .8rem; font-weight: 600; color: var(--acc); letter-spacing: .08em; }
.ic { display: grid; place-items: center; width: 40px; height: 40px; background: var(--acc-soft); color: var(--acc); flex: none; }
.card .ic { margin-bottom: 8px; }

/* SeatMe */
.prod { display: grid; gap: 48px; align-items: start; }
@media (min-width: 960px) { .prod { grid-template-columns: 1fr 1fr; } }
.feats { display: grid; gap: 20px; margin-bottom: 32px; }
.feats li { display: grid; grid-template-columns: 40px 1fr; gap: 16px; align-items: start; }
.feats p { color: var(--muted); font-size: .93rem; margin-top: 2px; }
.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 46px; padding: 0 24px; font-weight: 600; font-size: .95rem; background: var(--acc); color: #fff; border: 1px solid var(--acc); transition: background .15s; }
.btn:hover { background: var(--acc-strong); border-color: var(--acc-strong); }
.mock { display: grid; gap: 16px; min-width: 0; }
.box { background: var(--card); border: 1px solid var(--line); padding: 18px; }
.bh { display: flex; align-items: center; gap: 10px; font-size: .88rem; font-weight: 600; padding-bottom: 12px; margin-bottom: 12px; border-bottom: 1px solid var(--line); }
.lv { margin-left: auto; font-weight: 500; color: var(--acc); font-size: .78rem; }
.msg { max-width: 84%; padding: 10px 14px; font-size: .88rem; margin-top: 8px; }
.msg.me { margin-left: auto; background: var(--acc-soft); }
.msg.bot { background: var(--surf); }
.row { position: relative; height: 26px; margin-top: 8px; background: var(--surf); }
.row i { position: absolute; top: 5px; bottom: 5px; background: var(--acc-soft); border-left: 3px solid var(--acc); }
.row i.n { background: var(--acc); opacity: .85; }
.toast { margin-top: 12px; padding: 10px 14px; background: var(--surf); border-left: 3px solid var(--acc); font-size: .85rem; }

/* contact */
.contact { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 24px; padding: 40px; background: var(--bg); border: 1px solid var(--line); }
.contact p { color: var(--muted); margin-top: 8px; }
.contact .email a { color: var(--acc); font-weight: 500; }
.contact .email a:hover { text-decoration: underline; }
@media (max-width: 600px) { .contact { padding: 28px 20px; } .contact .btn { width: 100%; } }

/* footer */
.foot { border-top: 1px solid var(--line); padding: 28px 0; font-size: .85rem; color: var(--muted); }
.foot-in { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.foot img { height: 24px; width: auto; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } * { transition: none !important; } }