.km-installShortcut__headerBtn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  min-height: 32px;
  min-width: 0;
  padding: 3px 6px 3px 5px;
  border: 0;
  border-radius: 999px;
  background: rgba(255, 250, 242, 0.88);
  color: var(--km-text);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.01em;
  transition: transform 0.2s ease, background-color 0.2s ease;
}

.km-installShortcut__headerBtn:hover {
  transform: translateY(-1px);
  background: rgba(255, 246, 231, 0.94);
}

.km-installShortcut__headerIcon {
  display: inline-grid;
  flex: 0 0 auto;
  place-items: center;
  width: 17px;
  height: 17px;
  border-radius: 999px;
  background: #ff9b45;
  color: #fff;
  font-size: 0.88rem;
  font-weight: 800;
  line-height: 1;
}

.km-installShortcut__headerText {
  display: inline-flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  min-width: 0;
  line-height: 1;
  text-align: center;
}

.km-installShortcut__headerTextLine {
  display: block;
  white-space: nowrap;
}

.km-installShortcut__headerTextLine:first-child {
  font-size: 0.59rem;
}

.km-installShortcut__headerTextLine:last-child {
  margin-top: 1px;
  font-size: 0.66rem;
}

.km-installShortcut__modal {
  position: fixed;
  inset: 0;
  z-index: 10010;
  display: none;
}

.km-installShortcut__modal.is-open {
  display: block;
}

.km-installShortcut__modalBackdrop {
  position: absolute;
  inset: 0;
  background: rgba(32, 33, 36, 0.5);
}

.km-installShortcut__modalDialog {
  position: relative;
  width: min(440px, calc(100vw - 32px));
  margin: 9vh auto 0;
  padding: 28px 24px 22px;
  border-radius: 24px;
  background: var(--km-white);
  box-shadow: 0 26px 48px rgba(32, 33, 36, 0.22);
}

.km-installShortcut__modalClose {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 36px;
  height: 36px;
  border: 0;
  border-radius: 999px;
  background: rgba(84, 75, 60, 0.08);
  color: var(--km-text);
}

.km-installShortcut__modalKicker {
  margin: 0 0 10px;
  color: var(--km-accent);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
}

.km-installShortcut__modalTitle {
  margin: 0;
  color: var(--km-text);
  font-size: clamp(1.4rem, 2vw, 1.8rem);
  line-height: 1.25;
}

.km-installShortcut__modalLead {
  margin: 14px 0 0;
  color: var(--km-text);
  font-size: 0.98rem;
  line-height: 1.7;
}

.km-installShortcut__steps {
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.km-installShortcut__step {
  position: relative;
  padding: 12px 14px 12px 48px;
  border-radius: 16px;
  background: var(--km-sand-light);
  color: var(--km-text);
  font-size: 0.94rem;
  font-weight: 600;
  line-height: 1.6;
}

.km-installShortcut__step::before {
  content: counter(step);
  counter-increment: step;
  position: absolute;
  top: 50%;
  left: 14px;
  transform: translateY(-50%);
  display: inline-grid;
  place-items: center;
  width: 24px;
  height: 24px;
  border-radius: 999px;
  background: var(--km-accent);
  color: var(--km-white);
  font-size: 0.82rem;
  font-weight: 700;
}

.km-installShortcut__steps {
  counter-reset: step;
}

.km-installShortcut__note {
  margin: 14px 0 0;
  color: var(--km-text-muted);
  font-size: 0.9rem;
  line-height: 1.7;
}

.km-installShortcut__modalActions {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  margin-top: 20px;
}

.km-installShortcut__secondary,
.km-installShortcut__primary {
  min-width: 108px;
  min-height: 44px;
  padding: 0 18px;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 700;
}

.km-installShortcut__secondary {
  border: 1px solid rgba(84, 75, 60, 0.18);
  background: var(--km-white);
  color: var(--km-text);
}

.km-installShortcut__primary {
  border: 0;
  background: var(--km-accent);
  color: var(--km-white);
}

body.is-install-shortcut-modal-open {
  overflow: hidden;
}

@media (min-width: 1081px) {
  .km-header__sns {
    align-items: center;
  }

  .km-installShortcut__headerBtn {
    display: none;
  }
}

@media (max-width: 1080px) {
  .km-installShortcut__headerBtn {
    display: inline-flex;
    gap: 4px;
    min-height: 30px;
    padding: 3px 6px 3px 5px;
    font-size: 0.64rem;
  }

  .km-installShortcut__headerIcon {
    width: 16px;
    height: 16px;
    font-size: 0.82rem;
  }
}

@media (max-width: 640px) {
  .km-installShortcut__headerBtn {
    gap: 3px;
    min-height: 28px;
    padding: 2px 5px 2px 4px;
    font-size: 0.58rem;
  }

  .km-installShortcut__modalDialog {
    width: min(420px, calc(100vw - 24px));
    margin-top: 10vh;
    padding: 24px 18px 18px;
  }

  .km-installShortcut__headerIcon {
    width: 15px;
    height: 15px;
    font-size: 0.76rem;
  }

  .km-installShortcut__headerTextLine:first-child {
    font-size: 0.54rem;
  }

  .km-installShortcut__headerTextLine:last-child {
    font-size: 0.61rem;
  }
}

@media (max-width: 430px) {
  .km-installShortcut__headerBtn {
    flex-direction: column;
    gap: 0;
    min-height: 0;
    padding: 2px 3px 1px;
    border-radius: 14px;
  }

  .km-installShortcut__headerIcon {
    order: 2;
    width: 13px;
    height: 13px;
    font-size: 0.7rem;
  }

  .km-installShortcut__headerText {
    display: contents;
  }

  .km-installShortcut__headerTextLine:first-child {
    display: block;
    order: 1;
    font-size: 0.44rem;
    line-height: 1;
    letter-spacing: 0.01em;
    white-space: nowrap;
  }

  .km-installShortcut__headerTextLine:last-child {
    display: block;
    order: 3;
    margin-top: 0;
    font-size: 0.49rem;
    line-height: 1;
    letter-spacing: 0.01em;
    white-space: nowrap;
  }
}