:root {
  color-scheme: light;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #15221f;
  background: #f4f8f6;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: linear-gradient(180deg, #e9f6f1 0, #f7faf9 320px, #f7faf9 100%);
}

.shell {
  width: min(860px, calc(100% - 32px));
  margin: 0 auto;
  padding: 48px 0 64px;
}

header, main {
  background: #ffffff;
  border: 1px solid #dce9e4;
  border-radius: 22px;
  box-shadow: 0 18px 50px rgba(17, 73, 59, 0.08);
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  padding: 20px 24px;
  margin-bottom: 18px;
}

.brand { font-size: 20px; font-weight: 800; color: #0b765e; text-decoration: none; }
nav { display: flex; flex-wrap: wrap; gap: 16px; }
nav a { color: #315b51; font-weight: 700; text-decoration: none; }
nav a:hover, a { color: #0b765e; }

main { padding: clamp(24px, 6vw, 56px); }
h1 { margin: 0 0 10px; font-size: clamp(32px, 6vw, 48px); letter-spacing: -0.04em; }
h2 { margin: 34px 0 10px; font-size: 21px; color: #143f35; }
p, li { font-size: 16px; line-height: 1.72; }
.lead { color: #45635c; font-size: 18px; }
.meta { display: inline-block; margin: 6px 0 18px; color: #58726c; font-size: 14px; }
.notice { padding: 18px; border-radius: 14px; background: #e9f6f1; border-left: 4px solid #0b765e; }
.button {
  display: inline-block;
  margin-top: 12px;
  padding: 12px 18px;
  border-radius: 12px;
  background: #0b765e;
  color: #ffffff;
  font-weight: 800;
  text-decoration: none;
}
footer { padding: 24px 4px 0; color: #60756f; text-align: center; font-size: 13px; }

@media (max-width: 560px) {
  .shell { width: min(100% - 20px, 860px); padding-top: 10px; }
  header { align-items: flex-start; flex-direction: column; border-radius: 16px; }
  main { border-radius: 16px; }
}