:root {
  color-scheme: dark;
  font-family: "Arial Narrow", Arial, sans-serif;
  color: #fff;
  background: #000;
  font-synthesis: none;
}

* { box-sizing: border-box; }

body { margin: 0; }

.page {
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  padding: 32px clamp(24px, 5.6vw, 80px) 60px;
}

a {
  color: inherit;
  text-decoration: none;
  text-underline-offset: 6px;
  touch-action: manipulation;
}

a:hover { text-decoration: underline; }

a:focus-visible {
  outline: 2px solid #fff;
  outline-offset: 7px;
  border-radius: 3px;
}

.site_header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 32px;
}

h1, h2, p { margin: 0; font-weight: 400; }

h1 {
  font-size: clamp(38px, 5.1vw, 60px);
  line-height: 1.2;
  white-space: nowrap;
}

.add_button {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 62px;
  min-width: 342px;
  padding: 8px 30px;
  border-radius: 27px;
  background: #777;
  font-size: 32px;
  line-height: 1.2;
  white-space: nowrap;
}

.add_button:hover {
  background: #8a8a8a;
  text-decoration: none;
}

main { margin-top: 56px; }

.package_section + .package_section { margin-top: 36px; }

h2 {
  font-size: 44px;
  line-height: 1.2;
}

.tool_list {
  list-style: none;
  display: grid;
  gap: 30px;
  margin: 17px 0 0;
  padding-left: 28px;
  font-size: 20px;
  line-height: 1.4;
}

.site_footer {
  display: grid;
  gap: 16px;
  margin-top: auto;
  padding-top: 96px;
  font-size: 20px;
  line-height: 1.3;
}

@media (max-width: 1000px) {
  .site_header { flex-wrap: wrap; gap: 24px; }
  .add_button { min-width: 280px; min-height: 54px; font-size: 30px; }
  h2 { font-size: clamp(28px, 4.5vw, 44px); }
}

@media (max-width: 600px) {
  .page { padding: 28px 24px 36px; }
  h1 { font-size: clamp(28px, 7.6vw, 44px); }
  .add_button { min-width: 0; width: 100%; font-size: 28px; }
  main { margin-top: 44px; }
  .package_section + .package_section { margin-top: 30px; }
  h2 { font-size: clamp(25px, 6.8vw, 34px); }
  .tool_list { padding-left: 18px; gap: 24px; font-size: 18px; }
  .site_footer { padding-top: 80px; font-size: 18px; gap: 14px; }
}