:root{
  --bg: #ffffff;
  --text: #1f2430;
  --muted:#707787;
  --brand:#2F6FED;
  --brand-600:#2556c5;
  --line:#E9ECF2;
  --card:#F7F9FC;
  --radius:14px;
  --shadow:0 8px 24px rgba(15,23,42,.08);
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  color:var(--text);
  background:var(--bg);
  line-height:1.6;
}

.container{width:min(1100px,92%);margin-inline:auto}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:28px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.sidebar-gap{align-items:start}

a{color:var(--brand);text-decoration:none}
a:hover{color:var(--brand-600)}
h1,h2,h3,h4{line-height:1.2;margin:0 0 10px}
h1{font-size:clamp(32px,4.2vw,52px);letter-spacing:-.02em}
h2{font-size:clamp(26px,3vw,36px)}
h3{font-size:20px}
p{margin:0 0 12px;color:var(--muted)}

.btn{
  display:inline-block;border-radius:999px;
  padding:12px 18px;font-weight:700;border:1px solid var(--line);
  background:#fff;color:var(--text);box-shadow:0 1px 0 rgba(0,0,0,.02);
}
.btn:hover{border-color:#d8dde7}
.btn.ghost{background:transparent;border-color:var(--line)}
.btn.cta{background:var(--brand);color:#fff;border-color:var(--brand)}
.btn.cta:hover{background:var(--brand-600);border-color:var(--brand-600)}
.btn.small{padding:8px 12px;font-size:14px}
.btn.tiny{padding:6px 10px;font-size:13px}
.btn.block{display:block;text-align:center}

.site-header{
  position:sticky;top:0;background:rgba(255,255,255,.9);
  backdrop-filter:saturate(180%) blur(10px);z-index:50;border-bottom:1px solid var(--line);
}
.nav{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:64px}
.logo{font-weight:800;font-size:22px;color:#111}
.logo span{color:var(--brand)}
.main-nav{display:flex;align-items:center;gap:18px}
.main-nav ul{display:flex;align-items:center;gap:14px;margin:0;padding:0;list-style:none}
.main-nav a{color:#111;padding:10px 12px;border-radius:10px}
.main-nav a.active,.main-nav a:hover{background:var(--card)}

.burger{
  display:none;flex-direction:column;gap:5px;background:transparent;border:0;cursor:pointer
}
.burger span{width:26px;height:2px;background:#111;display:block}

.mobile-nav{
  position:fixed;inset:64px 0 0 auto; /* sub header */
  width:min(360px,84%);background:#fff;border-left:1px solid var(--line);
  box-shadow:var(--shadow);padding:16px;z-index:60;overflow:auto;
}
.mobile-nav nav{display:flex;flex-direction:column;gap:8px}
.mobile-nav a{padding:10px 12px;border-radius:10px}
.mobile-nav a.active,.mobile-nav a:hover{background:var(--card)}
.backdrop{
  position:fixed;inset:0;background:rgba(15,23,42,.4);z-index:55;
}

.hero{padding:48px 0}
.hero .container{display:grid;grid-template-columns:1.2fr .8fr;gap:28px;align-items:center}
.hero-copy p{max-width:56ch}
.actions{display:flex;gap:12px;margin-top:12px}
.hero-art{display:grid;gap:12px}
.hero .card.demo{
  background:var(--card);border:1px solid var(--line);padding:16px;border-radius:var(--radius);
  box-shadow:var(--shadow)
}
.tag{display:inline-block;margin-top:8px;padding:4px 10px;font-size:12px;border-radius:999px;background:#eef3ff;color:#1b3ea6}
.tag.blue{background:#e6f5ff;color:#0a65a8}

.features{padding:22px 0 6px}
.feature{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:16px;box-shadow:var(--shadow)
}
.feature .ico{font-size:24px}

.cta-band{padding:28px 0;background:linear-gradient(90deg,#f6f9ff,#ffffff)}
.cta-flex{display:flex;align-items:center;justify-content:space-between;gap:14px}

.page-hero{padding:30px 0;border-bottom:1px solid var(--line);background:#fff}

.filters{
  position:sticky;top:86px;
  border:1px solid var(--line);border-radius:var(--radius);padding:16px;background:#fff;
  box-shadow:var(--shadow)
}
.filters label{display:block;margin-bottom:10px}
.filters input,.filters select, .form input, .form select, .form textarea{
  width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:10px;background:#fff
}
.filters .btn{margin-right:6px}

.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.cards.grid-2{grid-template-columns:repeat(2,1fr)}
.card{
  border:1px solid var(--line);border-radius:var(--radius);background:#fff;padding:16px;box-shadow:var(--shadow)
}
.card .meta{list-style:none;padding:0;margin:8px 0 12px;color:var(--muted);font-size:14px}
.meta li+li{margin-top:4px}

.publish{padding:30px 0}
.form{margin-top:8px}
.form .full{grid-column:1/-1}

.site-footer{border-top:1px solid var(--line);margin-top:26px;padding:22px 0;background:#fff}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:26px}
.footer-grid ul{list-style:none;margin:0;padding:0}
.contact-list li+li{margin-top:4px}
.socials a{display:inline-block;margin-right:10px;color:#444}

.tiny{text-align:center}
.tiny small{color:var(--muted)}

@media (max-width: 960px){
  .main-nav{display:none}
  .burger{display:flex}
  .hero .container{grid-template-columns:1fr}
  .grid-3{grid-template-columns:1fr}
  .cards{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr}
}
@media (max-width: 640px){
  .grid-2,.cards{grid-template-columns:1fr}
}