:root {
  --bg: #fff7dd;
  --bg-deep: #f3e6b0;
  --ink: #101010;
  --ink-soft: #333333;
  --line: #1f1f1f;
  --card: #ffffff;
  --accent: #f1cf2a;
  --accent-2: #e6bb00;
  --maxw: 1120px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  color: var(--ink);
  background: radial-gradient(circle at 20% 0%, #fff8e6 0, var(--bg) 45%, var(--bg-deep) 100%);
  font-family: "Noto Sans SC", sans-serif;
}

body {
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
}

.bg-grid {
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(16, 16, 16, 0.07) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(16, 16, 16, 0.07) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
  z-index: 0;
}

.topbar,
main,
.footer {
  position: relative;
  z-index: 1;
}

.topbar {
  max-width: var(--maxw);
  margin: 18px auto;
  padding: 10px 18px;
  border: 2px solid var(--line);
  background: rgba(255, 255, 255, 0.8);
  border-radius: 18px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  text-decoration: none;
  font-family: "Space Grotesk", sans-serif;
  font-weight: 700;
  letter-spacing: 0.2px;
}

.brand img {
  width: 34px;
  height: 34px;
  border: 2px solid var(--line);
  border-radius: 8px;
}

.topbar nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.topbar nav a {
  color: var(--ink);
  text-decoration: none;
  padding: 6px 10px;
  border-radius: 10px;
  border: 1px solid transparent;
}

.topbar nav a:hover {
  border-color: var(--line);
  background: #fff;
}

main {
  max-width: var(--maxw);
  margin: 22px auto 52px;
  padding: 0 18px;
}

.hero {
  border: 3px solid var(--line);
  border-radius: 28px;
  background: linear-gradient(145deg, #fff 0%, #ffe978 100%);
  padding: 56px 36px;
  box-shadow: 10px 10px 0 #000;
}

.tag {
  display: inline-block;
  border: 2px solid var(--line);
  border-radius: 999px;
  padding: 6px 12px;
  font-size: 14px;
  font-weight: 700;
  background: #fff;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.2;
}

h1 {
  margin-top: 18px;
  font-family: "Space Grotesk", sans-serif;
  font-size: clamp(40px, 7vw, 76px);
  letter-spacing: -0.8px;
}

.subtitle {
  margin-top: 16px;
  font-size: 20px;
  max-width: 760px;
  color: var(--ink-soft);
}

.cta-row {
  margin-top: 26px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.btn {
  text-decoration: none;
  border-radius: 12px;
  border: 2px solid var(--line);
  padding: 12px 18px;
  font-weight: 700;
}

.btn.primary {
  color: #000;
  background: var(--accent);
}

.btn.primary:hover {
  background: var(--accent-2);
}

.btn.ghost {
  color: #000;
  background: #fff;
}

.hint {
  margin-top: 14px;
  color: #444;
}

.section {
  margin-top: 42px;
}

.section h2 {
  font-size: clamp(28px, 4vw, 42px);
  font-family: "Space Grotesk", sans-serif;
  margin-bottom: 16px;
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.card {
  border: 2px solid var(--line);
  border-radius: 16px;
  background: var(--card);
  padding: 18px;
}

.card h3 {
  font-size: 20px;
  margin-bottom: 8px;
}

.card p,
.panel p,
.privacy p,
.qa p,
.footer p,
ul {
  color: #3b3b3b;
}

.split {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 16px;
}

ul {
  margin: 12px 0 0;
  padding-left: 18px;
}

.panel {
  border: 2px solid var(--line);
  border-radius: 16px;
  background: #fff;
  padding: 20px;
}

.privacy {
  border: 2px solid var(--line);
  border-radius: 18px;
  padding: 18px;
  background: #fff;
}

.qa {
  display: grid;
  gap: 12px;
}

.qa article {
  border: 2px solid var(--line);
  border-radius: 14px;
  padding: 14px 16px;
  background: #fff;
}

.footer {
  max-width: var(--maxw);
  margin: 0 auto 28px;
  padding: 24px 18px;
  border-top: 2px solid var(--line);
}

.footer a {
  color: #000;
  font-weight: 700;
}

.footer small {
  display: block;
  margin-top: 12px;
  color: #4a4a4a;
}

.policy-main {
  max-width: 920px;
}

.policy-card {
  border: 2px solid var(--line);
  border-radius: 20px;
  background: #fff;
  padding: 24px 20px;
  box-shadow: 8px 8px 0 #000;
}

.policy-meta {
  margin-top: 10px;
  color: #555;
  font-size: 14px;
}

.policy-card h2 {
  margin-top: 24px;
}

.policy-card h2:first-of-type {
  margin-top: 18px;
}

.policy-card p,
.policy-card li {
  color: #2f2f2f;
  line-height: 1.7;
}

.policy-card ul {
  margin-top: 8px;
}

@media (max-width: 920px) {
  .cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .split {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .topbar {
    border-radius: 14px;
    padding: 10px 12px;
  }

  .hero {
    padding: 30px 18px;
    box-shadow: 6px 6px 0 #000;
  }

  .subtitle {
    font-size: 17px;
  }

  .cards {
    grid-template-columns: 1fr;
  }
}