:root {
  --green: #5f8a3a;
  --green-dark: #3f6224;
  --cream: #f7f3e8;
  --ink: #1d2416;
  --muted: #5b6352;
  --card: #ffffff;
  --radius: 14px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: var(--ink);
  background: var(--cream);
  line-height: 1.6;
}

a { color: inherit; }

.site-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1040px;
  margin: 0 auto;
  padding: 20px 16px;
}

.logo {
  font-weight: 800;
  font-size: 1.4rem;
  text-decoration: none;
  letter-spacing: -0.02em;
}
.logo span { color: var(--green); }

nav a {
  margin-left: 20px;
  text-decoration: none;
  color: var(--muted);
  font-weight: 600;
}
nav a:hover { color: var(--ink); }

main { max-width: 1040px; margin: 0 auto; padding: 0 16px; }

.hero { text-align: center; padding: 40px 0 24px; }
.eyebrow { color: var(--green-dark); font-weight: 600; margin: 0; }
.hero h1 { font-size: clamp(2.5rem, 8vw, 4.5rem); margin: 4px 0 0; letter-spacing: -0.03em; }

.product {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
  background: var(--card);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: 0 10px 30px rgba(29, 36, 22, 0.08);
}

.product-photo img {
  display: block;
  width: 100%;
  max-width: 380px;
  height: auto;
  margin: 0 auto;
  border-radius: var(--radius);
}

.product-info h2 { font-size: 2rem; margin: 0; }
.price { font-size: 1.6rem; font-weight: 700; color: var(--green-dark); margin: 4px 0 16px; }
.features { padding-left: 20px; color: var(--muted); }

.buy { display: flex; align-items: center; gap: 12px; margin-top: 24px; }
.buy label { font-weight: 600; }
.buy select {
  font: inherit;
  padding: 10px 12px;
  border: 1px solid #cfd5c6;
  border-radius: 8px;
  background: #fff;
}

.buy button {
  flex: 1;
  font: inherit;
  font-weight: 700;
  font-size: 1.1rem;
  color: #fff;
  background: var(--green);
  border: 0;
  border-radius: 8px;
  padding: 12px 20px;
  cursor: pointer;
  transition: background 0.15s;
}
.buy button:hover { background: var(--green-dark); }
.buy button:disabled { opacity: 0.6; cursor: wait; }

.error { color: #b42318; margin: 12px 0 0; }
.secure { color: var(--muted); font-size: 0.85rem; margin-top: 12px; }

.about { text-align: center; padding: 56px 0; max-width: 560px; margin: 0 auto; }

.site-footer { text-align: center; color: var(--muted); padding: 24px 16px; font-size: 0.9rem; }

.message {
  max-width: 520px;
  margin: 60px auto;
  text-align: center;
  background: var(--card);
  border-radius: var(--radius);
  padding: 40px 24px;
  box-shadow: 0 10px 30px rgba(29, 36, 22, 0.08);
}
.message .emoji { font-size: 3rem; margin: 0; }
.message .button {
  display: inline-block;
  margin-top: 16px;
  padding: 10px 20px;
  border-radius: 8px;
  background: var(--green);
  color: #fff;
  text-decoration: none;
  font-weight: 700;
}

@media (max-width: 720px) {
  .product { grid-template-columns: 1fr; padding: 20px; gap: 24px; }
  .product-photo img { max-width: 280px; }
}