:root {
  --green: #3ba862;
  --green-light: #50c878;
  --deep: #1f5f3a;
  --ink: #1d2420;
  --muted: #5b6660;
  --line: #e3e8e4;
  --bg: #f6f8f6;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Noto Sans", "Segoe UI", sans-serif;
  color: var(--ink);
  background: #fff;
}
* { box-sizing: border-box; }
body { margin: 0; line-height: 1.55; }
a { color: var(--deep); }
h1, h2, h3 { line-height: 1.15; margin: 0 0 .5em; }
h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); letter-spacing: -.02em; }
h2 { font-size: clamp(1.6rem, 3vw, 2.3rem); letter-spacing: -.01em; }
h3 { font-size: 1.1rem; }
p { margin: 0 0 1em; color: var(--muted); font-size: 1.05rem; }

.top { display: flex; align-items: center; justify-content: space-between; padding: 18px clamp(20px, 5vw, 64px); border-bottom: 1px solid var(--line); position: sticky; top: 0; background: #fffffff2; backdrop-filter: blur(8px); z-index: 1; }
.brand { display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: 1.3rem; color: var(--ink); text-decoration: none; }
.brand span { color: var(--green); }
nav { display: flex; align-items: center; gap: clamp(12px, 2.5vw, 28px); }
nav a { text-decoration: none; color: var(--ink); font-weight: 500; }

.btn { display: inline-block; padding: 12px 22px; border-radius: 10px; background: var(--green); color: #fff !important; font-weight: 600; text-decoration: none; border: 1px solid var(--green); }
.btn:hover { background: var(--deep); border-color: var(--deep); }
.btn.ghost { background: transparent; color: var(--deep) !important; border-color: var(--line); }
.btn.ghost:hover { border-color: var(--deep); background: transparent; }

section { padding: clamp(48px, 8vw, 96px) clamp(20px, 5vw, 64px); }
.hero { display: grid; grid-template-columns: 1fr 1.25fr; gap: clamp(28px, 4vw, 56px); align-items: center; background: linear-gradient(180deg, #fff, var(--bg)); }
.hero p { font-size: 1.2rem; }
.cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 8px; }
.shot { width: 100%; height: auto; border-radius: 14px; border: 1px solid var(--line); box-shadow: 0 18px 50px #1f5f3a22; background: #fff; }

.features { text-align: center; }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 28px; text-align: left; }
.grid article { padding: 24px; border: 1px solid var(--line); border-radius: 14px; background: #fff; }
.grid article h3::before { content: ""; display: inline-block; width: 10px; height: 10px; border-radius: 50%; background: var(--green-light); margin-right: 10px; vertical-align: middle; }
.grid p { font-size: 1rem; margin: 0; }

.row { display: grid; grid-template-columns: 1.3fr 1fr; gap: clamp(28px, 4vw, 56px); align-items: center; }
.row.flip img { order: 2; }
.row:nth-of-type(even) { background: var(--bg); }

.devices, .contact { text-align: center; }
.devices p, .contact p { max-width: 720px; margin-left: auto; margin-right: auto; }
.contact { background: var(--deep); }
.contact h2 { color: #fff; }
.contact p { color: #d6e7dc; }
.contact a { color: #fff; }
.contact .btn { background: var(--green-light); border-color: var(--green-light); color: #0f2e1c !important; }

footer { display: flex; flex-wrap: wrap; gap: 20px; justify-content: center; padding: 28px; color: var(--muted); font-size: .95rem; border-top: 1px solid var(--line); }

@media (max-width: 900px) {
  .hero, .row { grid-template-columns: 1fr; }
  .row.flip img { order: 0; }
  .grid { grid-template-columns: 1fr 1fr; }
  nav a:not(.btn) { display: none; }
}
@media (max-width: 560px) { .grid { grid-template-columns: 1fr; } }