:root {
  --ins-primary: #ff2e7e;
  --ins-primary-dark: #d81b60;
  --ins-bg: #fff4fa;
  --ins-card: #ffffff;
  --ins-text: #0f2540;
  --ins-muted: #5c6475;
  --ins-border: rgba(15, 37, 64, 0.08);
  --ins-border-strong: rgba(255, 46, 126, 0.18);
  --ins-radius: 20px;
  --ins-shadow: 0 18px 50px rgba(15, 37, 64, 0.10);
}

* { box-sizing: border-box; }

.install-page {
  margin: 0;
  min-height: 100vh;
  font-family: -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Noto Sans KR", "Pretendard", sans-serif;
  color: var(--ins-text);
  background:
    radial-gradient(circle at top, rgba(255, 46, 126, 0.09), transparent 32%),
    linear-gradient(180deg, #fff4fa 0%, #fff 48%, #fff7fb 100%);
  -webkit-font-smoothing: antialiased;
}

.install-shell {
  width: 100%;
  max-width: 720px;
  margin: 0 auto;
  padding: 20px 16px 48px;
}

.install-brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 18px;
  text-decoration: none;
  color: var(--ins-text);
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.install-brand-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 10px;
  background: linear-gradient(145deg, #ff6aa1, var(--ins-primary));
  color: #fff;
  box-shadow: 0 10px 24px rgba(255, 46, 126, 0.28);
  font-size: 0.8rem;
}

.install-card {
  background: var(--ins-card);
  border: 1px solid var(--ins-border);
  border-radius: var(--ins-radius);
  box-shadow: var(--ins-shadow);
  padding: 20px 18px;
  margin-bottom: 16px;
}

.install-hero {
  overflow: hidden;
  position: relative;
}

.install-hero::after {
  content: "";
  position: absolute;
  inset: auto -40px -40px auto;
  width: 180px;
  height: 180px;
  border-radius: 999px;
  background: radial-gradient(circle, rgba(255, 46, 126, 0.11), transparent 68%);
  pointer-events: none;
}

.install-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ins-primary-dark);
  background: rgba(255, 46, 126, 0.09);
  border: 1px solid rgba(255, 46, 126, 0.18);
  padding: 7px 12px;
  border-radius: 999px;
  margin-bottom: 14px;
}

.install-hero-top {
  display: flex;
  align-items: center;
  gap: 16px;
}

.install-hero-icon {
  width: 104px;
  height: 104px;
  border-radius: 24px;
  background: linear-gradient(145deg, #ff6aa1, var(--ins-primary));
  box-shadow: 0 18px 36px rgba(255, 46, 126, 0.28);
  object-fit: cover;
  flex-shrink: 0;
}

.install-hero-copy {
  min-width: 0;
}

.install-card h1 {
  font-size: clamp(1.65rem, 6vw, 2.2rem);
  line-height: 1.12;
  font-weight: 900;
  margin: 0 0 10px;
  letter-spacing: -0.04em;
}

.install-lead {
  font-size: 1rem;
  color: var(--ins-text);
  line-height: 1.55;
  margin: 0 0 8px;
  font-weight: 600;
}

.install-flow {
  margin: 0;
  font-size: 0.92rem;
  color: var(--ins-muted);
  line-height: 1.5;
}

.install-trust-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  margin-top: 16px;
}

.install-trust {
  padding: 12px 10px;
  border-radius: 14px;
  background: linear-gradient(180deg, #fff 0%, #fff7fb 100%);
  border: 1px solid rgba(255, 46, 126, 0.10);
  color: var(--ins-text);
  text-align: center;
  line-height: 1.35;
  font-size: 0.84rem;
  font-weight: 700;
}

.install-trust strong {
  display: block;
  font-size: 0.9rem;
  margin-bottom: 2px;
}

.install-download-url {
  margin-top: 14px;
  padding: 12px 14px;
  border-radius: 14px;
  background: rgba(255, 46, 126, 0.06);
  border: 1px solid rgba(255, 46, 126, 0.12);
  color: var(--ins-primary-dark);
  font-size: 0.86rem;
  font-weight: 700;
  word-break: break-all;
}

.install-btn-row {
  display: grid;
  gap: 10px;
  margin-top: 16px;
}

.install-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-height: 54px;
  padding: 14px 18px;
  border-radius: 16px;
  font-size: 0.98rem;
  font-weight: 800;
  text-decoration: none;
  text-align: center;
  border: none;
  cursor: pointer;
  font-family: inherit;
  transition: transform 0.12s ease, box-shadow 0.12s ease, opacity 0.12s ease;
}

.install-btn:active {
  transform: scale(0.985);
}

.install-btn--primary {
  background: linear-gradient(180deg, var(--ins-primary) 0%, #e91e63 100%);
  color: #fff;
  box-shadow: 0 12px 28px rgba(255, 46, 126, 0.28);
}

.install-btn--secondary {
  background: #fff;
  color: var(--ins-primary-dark);
  border: 1.5px solid rgba(255, 46, 126, 0.25);
}

.install-btn--ghost {
  background: transparent;
  color: var(--ins-muted);
  border: 1px dashed rgba(15, 37, 64, 0.16);
  min-height: 48px;
  font-weight: 700;
}

.install-status {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--ins-primary-dark);
  margin: 14px 0 0;
  min-height: 1.4em;
  line-height: 1.45;
}

.install-hint-inline {
  margin: 10px 0 0;
  font-size: 0.84rem;
  color: var(--ins-muted);
  line-height: 1.5;
}

.install-section-title {
  font-size: 0.95rem;
  font-weight: 900;
  letter-spacing: -0.02em;
  margin: 0 0 12px;
  color: var(--ins-text);
}

.install-step-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.install-step-item {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 12px;
  align-items: start;
  padding: 12px 14px;
  border-radius: 16px;
  background: linear-gradient(180deg, #fff 0%, #fff7fb 100%);
  border: 1px solid rgba(15, 37, 64, 0.08);
}

.install-step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 12px;
  background: linear-gradient(145deg, #ff6aa1, var(--ins-primary));
  color: #fff;
  font-size: 0.88rem;
  font-weight: 900;
}

.install-step-title {
  margin: 0 0 3px;
  font-size: 0.96rem;
  font-weight: 900;
  color: var(--ins-text);
}

.install-step-desc {
  margin: 0;
  font-size: 0.87rem;
  line-height: 1.55;
  color: var(--ins-muted);
}

.install-details {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid rgba(15, 37, 64, 0.08);
}

.install-details summary {
  cursor: pointer;
  font-weight: 900;
  color: var(--ins-primary-dark);
  list-style: none;
}

.install-details summary::-webkit-details-marker {
  display: none;
}

.install-steps,
.install-guide {
  margin-top: 14px;
  padding: 14px;
  border-radius: 16px;
  background: rgba(255, 46, 126, 0.06);
  border: 1px solid rgba(255, 46, 126, 0.12);
}

.install-steps h2,
.install-guide h2 {
  font-size: 0.88rem;
  font-weight: 900;
  color: var(--ins-primary-dark);
  margin: 0 0 10px;
  letter-spacing: 0.02em;
}

.install-steps ol,
.install-guide p {
  margin: 0;
  color: var(--ins-text);
  font-size: 0.9rem;
  line-height: 1.65;
}

.install-steps ol {
  padding-left: 1.2rem;
}

.install-guide p {
  color: var(--ins-muted);
}

.install-foot {
  text-align: center;
  font-size: 0.82rem;
  color: var(--ins-muted);
  margin-top: 18px;
  line-height: 1.55;
}

.install-foot a {
  color: var(--ins-primary-dark);
  font-weight: 800;
}

@media (max-width: 560px) {
  .install-shell {
    padding: 16px 12px 40px;
  }

  .install-hero-top {
    align-items: flex-start;
    gap: 14px;
  }

  .install-hero-icon {
    width: 92px;
    height: 92px;
    border-radius: 22px;
  }

  .install-trust-row {
    grid-template-columns: 1fr;
  }
}