:root{
  --green:#16851f;
  --green-dark:#0f6517;
  --green-light:#eaf7e8;
  --ink:#171a18;
  --muted:#5f665f;
  --line:#e4e9e4;
  --surface:#ffffff;
  --shadow:0 18px 55px rgba(23,55,25,.12);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:#fff;color:var(--ink);font-family:Inter,Segoe UI,Arial,sans-serif;line-height:1.55}
img{display:block;max-width:100%}
a{color:inherit}
.site-header{
  height:82px;display:flex;align-items:center;justify-content:space-between;
  padding:0 clamp(22px,5vw,76px);border-bottom:1px solid var(--line);
  position:sticky;top:0;background:rgba(255,255,255,.94);backdrop-filter:blur(14px);z-index:20
}
.brand{display:flex;align-items:center;text-decoration:none}
.brand img{width:92px;height:62px;object-fit:contain;object-position:left center}
.header-download{background:var(--green);color:#fff;text-decoration:none;font-weight:800;padding:12px 19px;border-radius:12px}
.hero{
  max-width:1530px;margin:auto;display:grid;grid-template-columns:minmax(330px,.72fr) minmax(520px,1.6fr);
  align-items:center;gap:34px;padding:56px clamp(22px,5vw,76px) 42px
}
.eyebrow{color:var(--green);font-weight:900;letter-spacing:2px;font-size:.82rem;margin:0 0 10px}
.hero h1{font-size:clamp(2.45rem,4.8vw,5rem);line-height:.98;letter-spacing:-.055em;margin:0 0 24px}
.hero-copy>p:not(.eyebrow){font-size:clamp(1.05rem,1.5vw,1.28rem);color:var(--muted);max-width:650px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:29px}
.button{display:inline-flex;align-items:center;justify-content:center;gap:13px;text-decoration:none;border-radius:14px;padding:14px 20px;font-weight:800;transition:.18s ease}
.button:hover{transform:translateY(-2px)}
.button-primary{background:linear-gradient(135deg,var(--green),#2da02e);color:#fff;box-shadow:0 10px 28px rgba(22,133,31,.24)}
.button-secondary{border:1px solid var(--line);background:#fff}
.button small{display:block;font-size:.74rem;font-weight:500;opacity:.9}
.download-icon{font-size:31px;line-height:1}
.hero-visual{border-radius:22px;overflow:hidden;box-shadow:var(--shadow);background:#fff}
.hero-visual img{width:100%;height:auto}
.features{
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  display:grid;grid-template-columns:repeat(4,1fr);max-width:1530px;margin:auto;padding:36px clamp(22px,5vw,76px);gap:24px
}
.features article{position:relative;padding-left:54px}
.features article>span{position:absolute;left:0;top:1px;width:42px;height:42px;border:1px solid var(--green);border-radius:50%;display:grid;place-items:center;color:var(--green);font-size:22px;font-weight:900}
.features h2{font-size:1rem;margin:0 0 5px}
.features p{font-size:.9rem;color:var(--muted);margin:0}
.download-section{
  max-width:1420px;margin:70px auto;padding:0 clamp(22px,5vw,76px);
  display:grid;grid-template-columns:1.25fr .75fr;gap:50px;align-items:center
}
.download-copy h2{font-size:clamp(2rem,4vw,4rem);line-height:1.02;letter-spacing:-.04em;margin:0 0 20px}
.download-copy>p:not(.eyebrow){font-size:1.08rem;color:var(--muted);max-width:690px}
.button.large{margin-top:18px;padding:18px 26px}
.install-note{font-size:.88rem!important;margin-top:18px!important}
.qr-card{background:linear-gradient(145deg,#fff,#f3f8f2);border:1px solid var(--line);border-radius:24px;padding:24px;box-shadow:var(--shadow);text-align:center}
.qr-card img{
  width:min(100%,360px);
  aspect-ratio:1 / 1;
  height:auto;
  object-fit:contain;
  margin:auto;
  border-radius:18px;
}
.qr-card strong{display:block;font-size:1.3rem;margin-top:17px}
.qr-card span{display:block;color:var(--muted);font-size:.78rem;overflow-wrap:anywhere}
.compatibility{max-width:1270px;margin:0 auto 65px;padding:24px 30px;border-radius:18px;background:var(--green-light);display:flex;justify-content:space-between;gap:20px;align-items:center}
.compatibility span{color:var(--muted)}
footer{background:#171a18;color:#d8ddd8;padding:22px clamp(22px,5vw,76px);display:flex;justify-content:space-between;gap:20px}
footer a{color:#71c769;text-decoration:none}
@media(max-width:980px){
  .hero{grid-template-columns:1fr;padding-top:36px}
  .hero-copy{text-align:center}
  .hero-copy>p:not(.eyebrow){margin-left:auto;margin-right:auto}
  .hero-actions{justify-content:center}
  .features{grid-template-columns:repeat(2,1fr)}
  .download-section{grid-template-columns:1fr}
  .download-copy{text-align:center}
  .download-copy>p{margin-left:auto;margin-right:auto}
  .compatibility{flex-direction:column;text-align:center}
}
@media(max-width:600px){
  .site-header{height:70px}
  .brand img{width:74px;height:52px}
  .header-download{padding:10px 12px;font-size:.85rem}
  .hero{padding-left:17px;padding-right:17px}
  .hero h1{font-size:2.65rem}
  .features{grid-template-columns:1fr;padding-left:22px;padding-right:22px}
  .download-section{padding-left:18px;padding-right:18px;margin-top:48px}
  footer{flex-direction:column;text-align:center}
}