:root{
  --navy:#0c2a3e; --teal:#24c3c7; --ink:#132b3a; --muted:#6b7b88;
  --bg:#f7f9fb; --card:#ffffff; --ring:rgba(36,195,199,.25);
  --shadow: 0 14px 30px rgba(10,32,49,.10), 0 4px 12px rgba(10,32,49,.06);
  --radius: 20px;
  --fs-h1: clamp(1.9rem, 4.5vw, 2.6rem);
  --fs-h2: clamp(1.3rem, 3.4vw, 1.8rem);
  --fs-p: clamp(1rem, 2.7vw, 1.08rem);
}
*{box-sizing:border-box} html,body{margin:0;padding:0;font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,Noto Sans,Arial;color:var(--ink);background:var(--bg)}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{width:100%;max-width:1080px;margin:auto;padding:0 18px}
/* Header - app-like */
.site-header{position:sticky;top:0;z-index:70;background:#fff;backdrop-filter:saturate(140%) blur(10px);border-bottom:1px solid rgba(12,42,62,.08)}
.nav{display:flex;align-items:center;justify-content:space-between;min-height:64px;padding:4px 0}
.brand{display:flex;align-items:center;gap:12px}
.brand-logo{width:36px;height:36px;border-radius:12px;background:linear-gradient(135deg,var(--navy),#183d55);position:relative}
.brand-logo:after{content:"";position:absolute;left:7px;right:7px;bottom:6px;height:3px;background:var(--teal);border-radius:3px}
.brand-title{font-weight:800;letter-spacing:.2px}.brand-title .kn{font-size:18px}.brand-title .pro{font-size:16px;color:var(--muted);font-weight:600}
/* Burger & Off-canvas */
.menu-toggle{display:flex;width:42px;height:42px;border-radius:12px;border:1px solid rgba(12,42,62,.14);background:#fff;cursor:pointer;align-items:center;justify-content:center}
.menu-toggle span{width:22px;height:2px;background:var(--navy);position:relative;display:block}
.menu-toggle span:before,.menu-toggle span:after{content:"";position:absolute;left:0;width:22px;height:2px;background:var(--navy);transition:.3s}
.menu-toggle span:before{top:-7px}.menu-toggle span:after{top:7px}
.menu-toggle.active span{background:transparent}.menu-toggle.active span:before{top:0;transform:rotate(45deg)}.menu-toggle.active span:after{top:0;transform:rotate(-45deg)}
.offcanvas-backdrop{position:fixed;inset:0;background:rgba(6,22,33,.55);opacity:0;pointer-events:none;transition:.25s;z-index:58}
.offcanvas{position:fixed;top:0;right:-320px;height:100vh;width:min(86vw,320px);background:#fff;border-left:1px solid rgba(12,42,62,.08);box-shadow:-20px 0 40px rgba(10,32,49,.10);padding:18px 18px 24px;display:flex;flex-direction:column;gap:6px;transition:.28s ease;z-index:59}
.offcanvas a{padding:14px 10px;border-radius:12px}
.offcanvas .cta{margin-top:8px;text-align:center;background:var(--navy);color:#fff}
.offcanvas-open .offcanvas{right:0}.offcanvas-open .offcanvas-backdrop{opacity:1;pointer-events:auto}
/* Desktop nav */
.nav-links{display:none}
@media (min-width:980px){.nav{min-height:76px}.nav-links{display:flex;gap:16px}.menu-toggle{display:none} .nav-links a{padding:10px 12px;border-radius:12px} .nav-links a:hover{background:rgba(36,195,199,.12)} .nav-links .cta{background:var(--navy);color:#fff}}
/* Hero with background image */
.hero{position:relative;min-height:64vh;display:flex;align-items:flex-end;background:url('../img/hero-house.png') center/cover no-repeat}
.hero:after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,21,31,.25) 0%, rgba(7,21,31,.55) 60%, rgba(7,21,31,.72) 100%)}
.hero-inner{position:relative;z-index:1;width:100%}
.hero-card{background:rgba(255,255,255,.96);backdrop-filter:blur(6px);padding:18px;border-radius:18px;box-shadow:var(--shadow);margin:18px auto}
.hero h1{font-size:var(--fs-h1);line-height:1.15;margin:0 0 10px;color:#fff}
.hero .lead{color:#e8f4f6;font-size:var(--fs-p)}
/* Buttons */
.btn{padding:12px 16px;border-radius:14px;border:1px solid transparent;font-weight:700;cursor:pointer;display:inline-block}
.btn.primary{background:var(--teal);color:#07313c}
.btn.ghost{border-color:rgba(255,255,255,.65);color:#fff;background:transparent}
/* Cards / Sections */
main{padding:18px 0 32px}
.grid{display:grid;gap:16px}
.card{background:var(--card);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow);animation:rise .5s ease both}
.card h2,.card h3{margin:0 0 8px}
.underline{height:3px;width:100px;background:var(--teal);border-radius:3px;margin:6px 0 10px}
.features{grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}
.feature{display:flex;gap:12px;align-items:flex-start}
.feature img{width:36px;height:36px}
/* Footer */
footer{border-top:1px solid rgba(12,42,62,.08);background:#fff}
.footer-inner{display:grid;gap:10px;padding:22px 0;color:var(--muted)}
.footer-links{display:flex;gap:14px;flex-wrap:wrap}
/* Animations */
@keyframes rise{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}
@media (min-width:720px){
  .wrap{padding:0 22px}
  .hero-card{display:flex;align-items:center;justify-content:space-between;gap:16px;max-width:900px;padding:22px}
  .features{gap:18px}
}
@media (min-width:1120px){
  .hero{min-height:68vh}
}