:root {
  --ink: #141318;
  --muted: #5c5d66;
  --paper: #fff8e8;
  --white: #ffffff;
  --line: rgba(20, 19, 24, 0.14);
  --yellow: #ffd83d;
  --red: #f32438;
  --cyan: #11b7ff;
  --green: #46e66a;
  --shadow: 0 22px 60px rgba(17, 18, 24, 0.14);
  --radius: 8px;
  font-family: Inter, Manrope, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(90deg, rgba(20, 19, 24, 0.035) 1px, transparent 1px),
    linear-gradient(rgba(20, 19, 24, 0.035) 1px, transparent 1px),
    var(--paper);
  background-size: 42px 42px;
}

a {
  color: inherit;
}

.container {
  width: min(980px, calc(100% - 28px));
  margin: 0 auto;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255, 248, 232, 0.9);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(18px);
}

.nav {
  min-height: 70px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  text-decoration: none;
  font-weight: 1000;
  text-transform: uppercase;
}

.brand img {
  width: 42px;
  height: 42px;
  border-radius: var(--radius);
  box-shadow: 0 10px 22px rgba(20, 19, 24, 0.2);
}

.brand-word {
  display: inline-block;
  font-size: 26px;
  line-height: 1;
  font-weight: 1000;
  letter-spacing: 0;
}

.brand-word span {
  color: var(--red);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 16px;
  color: var(--white);
  background: var(--ink);
  border: 2px solid var(--ink);
  border-radius: var(--radius);
  box-shadow: 5px 5px 0 var(--yellow);
  text-decoration: none;
  font-weight: 1000;
  white-space: nowrap;
}

.hero {
  padding: 54px 0 30px;
}

.kicker {
  width: fit-content;
  margin-bottom: 14px;
  padding: 8px 10px;
  background: var(--yellow);
  border: 2px solid var(--ink);
  border-radius: var(--radius);
  font-size: 12px;
  font-weight: 1000;
  text-transform: uppercase;
}

h1 {
  max-width: 880px;
  margin: 0 0 14px;
  font-size: clamp(38px, 7vw, 76px);
  line-height: 0.95;
  letter-spacing: 0;
  font-weight: 1000;
  text-transform: uppercase;
}

.lead {
  max-width: 780px;
  margin: 0;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.45;
  font-weight: 720;
}

.doc {
  margin: 26px auto 56px;
  padding: clamp(22px, 4vw, 42px);
  background: var(--white);
  border: 2px solid var(--ink);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.doc h2 {
  margin: 30px 0 10px;
  font-size: 26px;
  line-height: 1.1;
  font-weight: 1000;
}

.doc h2:first-child {
  margin-top: 0;
}

.doc h3 {
  margin: 22px 0 8px;
  font-size: 20px;
  line-height: 1.15;
  font-weight: 1000;
}

.doc p,
.doc li {
  color: #34343b;
  font-size: 16px;
  line-height: 1.58;
  font-weight: 650;
}

.doc ul,
.doc ol {
  padding-left: 22px;
}

.notice {
  margin: 22px 0;
  padding: 16px;
  background: #eaf8ff;
  border: 2px solid var(--ink);
  border-radius: var(--radius);
  box-shadow: 5px 5px 0 var(--cyan);
}

.seller {
  display: grid;
  gap: 8px;
  margin: 22px 0;
  padding: 16px;
  background: #e9fff0;
  border: 2px solid var(--ink);
  border-radius: var(--radius);
}

.seller strong {
  font-size: 18px;
}

.footer {
  padding: 30px 0;
  color: rgba(255, 255, 255, 0.74);
  background: var(--ink);
}

.footer .container {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.footer a {
  color: var(--white);
}

@media (max-width: 640px) {
  .nav {
    align-items: flex-start;
    flex-direction: column;
    padding: 12px 0;
  }

  .btn {
    width: 100%;
  }
}