:root {
  --ink: #10231f;
  --ink-soft: #2a4a43;
  --paper: #f7f4ee;
  --teal: #0f766e;
  --teal-deep: #0b5f59;
  --line: #d5cdbe;
  --muted: #5b6b66;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.55;
}

a { color: var(--teal-deep); }

.hero {
  position: relative;
  min-height: auto;
  display: flex;
  align-items: flex-start;
  color: #f5fffc;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(8, 28, 24, 0.25) 0%, rgba(8, 28, 24, 0.88) 70%, rgba(8, 28, 24, 0.96) 100%),
    radial-gradient(circle at 20% 20%, rgba(15, 118, 110, 0.45), transparent 45%),
    linear-gradient(135deg, #0b3d36 0%, #12352f 40%, #1a4d44 100%);
}

.hero-inner {
  position: relative;
  z-index: 1;
  width: min(720px, 100%);
  padding: 28px 22px 32px;
}

.brand {
  margin: 0 0 14px;
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #9fefe3;
}

.hero h1 {
  margin: 0;
  font-size: clamp(2rem, 7vw, 3.2rem);
  line-height: 1.15;
  font-weight: 800;
}

.lead {
  margin: 14px 0 0;
  font-size: 1.08rem;
  color: rgba(245, 255, 252, 0.88);
  max-width: 34ch;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
}

.btn-download,
.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 12px 18px;
  border-radius: 12px;
  font-weight: 700;
  text-decoration: none;
}

.btn-download {
  background: #f4fff9;
  color: var(--teal-deep);
}

.btn-ghost {
  border: 1px solid rgba(255,255,255,0.35);
  color: #f5fffc;
  background: transparent;
}

.btn-block {
  width: 100%;
  margin-top: 8px;
  background: var(--teal);
  color: #fff;
}

.meta {
  margin: 16px 0 0;
  font-size: 0.88rem;
  color: rgba(245, 255, 252, 0.7);
}

.content {
  width: min(720px, 100%);
  margin: 0 auto;
  padding: 28px 22px 48px;
}

section { margin-top: 28px; }

h2 {
  margin: 0 0 10px;
  font-size: 1.35rem;
}

section p, .features, .steps {
  margin: 0;
  color: var(--ink-soft);
}

.features, .steps {
  padding-left: 1.15rem;
}

.features li, .steps li {
  margin: 10px 0;
}

.update-note {
  margin-top: 14px;
  padding: 12px 14px;
  background: #eef8f5;
  border: 1px solid #cfe8e1;
  border-radius: 12px;
  color: var(--teal-deep);
  font-weight: 600;
}

.foot {
  border-top: 1px solid var(--line);
  padding: 22px;
  text-align: center;
  color: var(--muted);
  font-size: 0.9rem;
  background: #efebe3;
}

.foot p { margin: 4px 0; }

@media (min-width: 800px) {
  .hero-inner { padding: 40px 40px 44px; }
  .content { padding: 32px 24px 56px; }
}