* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: Arial, 'Nanum Gothic', 'Malgun Gothic', sans-serif;
  background: #f4f4f4;
  color: #111;
}
.lotto-wrap {
  width: min(680px, 100%);
  margin: 0 auto;
  padding: 10px 16px 40px;
  background: #fff;
}
h1 {
  margin: 0 auto 14px;
  width: min(560px, 100%);
  height: 48px;
  line-height: 48px;
  background: #69acec;
  color: #222;
  font-size: 21px;
  text-align: center;
  font-weight: 800;
}
.lotto-panel {
  width: min(560px, 100%);
  margin: 0 auto;
}
.setting-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin: 8px 0 18px;
  font-size: 20px;
}
.setting-row label {
  background: #d6d6d6;
  padding: 1px 4px;
  color: #444;
}
.setting-row select {
  font-size: 18px;
  min-width: 76px;
  height: 28px;
}
.advanced-box {
  margin: 0 0 14px;
  border: 1px solid #d9e7ff;
  border-radius: 8px;
  padding: 10px 12px;
}
.advanced-box summary {
  cursor: pointer;
  font-weight: 700;
}
.setting-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 12px;
}
.setting-grid label {
  display: flex;
  flex-direction: column;
  gap: 5px;
  font-size: 13px;
  color: #333;
}
.setting-grid input {
  height: 34px;
  border: 1px solid #cfcfcf;
  border-radius: 6px;
  padding: 0 10px;
  font-size: 14px;
}
.primary-btn, .outline-btn {
  display: block;
  width: min(520px, 100%);
  height: 54px;
  margin: 10px auto 24px;
  border-radius: 6px;
  background: #fff;
  border: 2px solid #0d84ff;
  color: #111;
  font-size: 18px;
  font-weight: 800;
  cursor: pointer;
}
.primary-btn:hover, .outline-btn:hover {
  background: #f0f8ff;
}
.canvas-box {
  width: min(620px, 100%);
  margin: 0 auto 24px;
  text-align: center;
  overflow-x: auto;
}
canvas {
  display: block;
  width: min(620px, 100%);
  height: auto;
  margin: 0 auto;
  background: transparent;
}
.notice {
  width: min(560px, 100%);
  margin: 0 auto;
  font-size: 14px;
  line-height: 1.55;
  color: #444;
}
@media (max-width: 520px) {
  .lotto-wrap { padding-left: 10px; padding-right: 10px; }
  h1 { font-size: 19px; }
  .setting-row { font-size: 18px; }
  .setting-grid { grid-template-columns: 1fr; }
}