:root {
  color-scheme: light;
  --green: #075f41;
  --light-green: #63a943;
  --ink: #17231f;
  --muted: #66736d;
  --line: #dce7e1;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 85% 5%, #cfe8d8 0, transparent 30%),
    linear-gradient(155deg, #f7fbf8, #eef5f1);
  color: var(--ink);
  font-family: "Malgun Gothic", "Noto Sans KR", sans-serif;
}

main {
  width: min(560px, calc(100% - 32px));
  margin: 0 auto;
  padding: 48px 0;
}

section {
  background: #ffffffed;
  border: 1px solid #ffffff;
  border-radius: 26px;
  box-shadow: 0 18px 60px #163d2c17;
}

.hero {
  padding: 42px 28px 34px;
  text-align: center;
}

.hero img {
  width: 122px;
  height: 122px;
  border-radius: 28px;
  box-shadow: 0 12px 35px #075f4129;
}

.eyebrow {
  margin: 24px 0 7px;
  color: var(--green);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .2em;
}

h1 {
  margin: 0;
  font-size: 34px;
  letter-spacing: -.05em;
}

.description {
  margin: 12px 0 28px;
  color: var(--muted);
  line-height: 1.6;
}

.download {
  display: block;
  padding: 17px 20px;
  border-radius: 13px;
  background: linear-gradient(110deg, var(--green), var(--light-green));
  color: white;
  font-size: 17px;
  font-weight: 800;
  text-decoration: none;
  box-shadow: 0 10px 24px #075f413d;
}

.version {
  margin: 15px 0 0;
  color: var(--muted);
  font-size: 12px;
}

.kakao-guide {
  display: grid;
  gap: 5px;
  margin: 0 0 15px;
  padding: 14px;
  border-radius: 12px;
  background: #fff8d8;
  color: #604f0b;
  font-size: 13px;
  line-height: 1.5;
}

.guide {
  margin-top: 16px;
  padding: 25px 28px;
}

.guide h2 {
  margin: 0 0 14px;
  font-size: 17px;
}

.steps {
  display: grid;
  gap: 10px;
}

.steps div {
  display: grid;
  grid-template-columns: 30px 1fr;
  align-items: center;
  gap: 10px;
  padding: 11px;
  border-radius: 11px;
  background: #f3f8f5;
  color: #3c4943;
  font-size: 14px;
  line-height: 1.5;
}

.steps b {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--green);
  color: white;
}

.guide p {
  margin: 18px 0 0;
  padding-top: 15px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 12px;
}

.fallback {
  margin-top: 16px;
  padding: 21px 24px;
  border-color: #f1dca4;
  background: #fffdf4;
}

.fallback h2 {
  margin: 0 0 8px;
  font-size: 15px;
}

.fallback p {
  margin: 0;
  color: #665d43;
  font-size: 13px;
  line-height: 1.65;
}

@media (max-width: 480px) {
  main { padding: 22px 0; }
  .hero { padding: 34px 20px 28px; }
  .hero img { width: 108px; height: 108px; border-radius: 24px; }
  h1 { font-size: 30px; }
  .guide { padding: 22px 20px; }
}