/* Header link styling: remove underline for logo/header images */
header a,
.brand a {
  border-bottom: none;
}

.btn--pink:hover, .btn--pink:focus {
  background: #e0487a;
  color: #fff;
}
/* ヘッダー画像中央寄せ */
header {
  text-align: center;
}
/* serial-autofill用の案内画像枠スタイル */

/* ===== 共通レイアウト（serial-autofill.html用） ===== */

.page-card {
  max-width: 700px;
  margin: 2rem auto;
  background: rgba(255, 255, 255, 0.95);
  border-radius: 1.5rem;
  box-shadow: var(--shadow-main);
  padding: 2rem 1.5rem;
}

@media (max-width: 600px) {
  .page-card {
    margin: 1.25rem 0.75rem;
    padding: 1.4rem 1rem;
    border-radius: 1.25rem;
  }
}

.page-back {
  margin-top: 2rem;
}

.page-back a {
  color: var(--blue);
  text-decoration: underline;
  font-weight: 700;
}

.page-title {
  color: var(--accent-blue);
  font-size: 2rem;
  line-height: 1.25;
  margin: 0.6em 0 0.5em;
}

@media (max-width: 600px) {
  .page-title {
    font-size: 1.6rem;
  }
}

.section-title {
  color: var(--blue);
  margin-top: 2em;
}

.note-muted {
  font-size: 0.8em;
  color: #888;
  margin: 0.4em 0 1.2em;
}

.contact-list {
  margin: 0.25em 0 1.5em;
  padding-left: 1.2em;
  color: #555;
}

.contact-list li {
  margin: 0.3em 0;
}

/* ダウンロードボタン群 */
.download-buttons {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.9rem;
  margin: 1.25rem 0 1.5rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  text-decoration: none;
  font-weight: 800;
  border-radius: 999px;
  padding: 0.85rem 1.35rem;
  color: #fff;
  box-shadow: var(--shadow-main);
  line-height: 1.2;
  text-align: center;
  transition: transform var(--transition-speed, 0.35s) ease,
    filter var(--transition-speed, 0.35s) ease;
}

.btn:focus-visible {
  outline: 3px solid rgba(25, 118, 210, 0.35);
  outline-offset: 3px;
}

.btn:hover {
  transform: translateY(-1px);
  filter: brightness(1.02);
}

.btn.is-disabled,
.btn[aria-disabled="true"] {
  cursor: not-allowed;
  opacity: 0.75;
  pointer-events: none;
  filter: saturate(0.9);
}

.btn--pink {
  background: var(--accent-pink);
}

.btn--lavender {
  background: #b39ddb;
}

.btn--sky {
  background: #6ec6ff;
}

.btn--sakura {
  background: #ffb6c1;
}

.btn--blue {
  background: var(--accent-blue, #2196f3);
  box-shadow: 0 2px 10px rgba(33, 150, 243, 0.16);
}

/* セクションナビ */
.section-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem 1rem;
  margin: 0 0 1.5rem;
}

.section-nav__link {
  color: var(--accent-blue);
  text-decoration: underline;
  font-weight: 800;
  background: rgba(25, 118, 210, 0.08);
  padding: 0.55rem 1rem;
  border-radius: 999px;
}

.section-nav__link--pink {
  color: var(--accent-pink);
  background: rgba(240, 98, 146, 0.1);
}

/* ガイドカード（準備/実行） */
.guide-card {
  border-radius: 1em;
  padding: 1.5em 1.2em;
  margin-bottom: 2em;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.guide-card--blue {
  background: #f6faff;
  border-left: 6px solid var(--accent-blue);
  box-shadow: 0 2px 8px rgba(0, 80, 200, 0.07);
}

.guide-card--pink {
  background: #fff8f8;
  border-left: 6px solid var(--accent-pink);
  box-shadow: 0 2px 8px rgba(200, 0, 80, 0.07);
}

.guide-card__title {
  margin-top: 0;
}

.guide-card__title--blue {
  color: var(--accent-blue);
}

.guide-card__title--pink {
  color: var(--accent-pink);
}

/* トップに戻る */
.back-to-top {
  text-align: center;
  margin: 2.5em 0 0.5em;
}

/* serial-autofill用の案内画像枠スタイル（大きめ画像対応） */
.serial-guide-step {
  display: flex;
  align-items: flex-start;
  gap: 1.5em;
  background: #fff;
  border-radius: 1.2em;
  box-shadow: 0 2px 12px rgba(33,150,243,0.08);
  margin-bottom: 2em;
  padding: 1.2em 1em;
}
/* 画像枠は縦長優先・スマホで横長にならないようにする */
.serial-guide-step .serial-guide-img {
  flex: 0 0 auto;
  width: 100%;
  max-width: 180px;
  aspect-ratio: 9/18;
  background: #fff;
  border-radius: 1em;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  box-shadow: 0 1px 6px rgba(33,150,243,0.07);
  margin-left: auto;
  margin-right: auto;
  height: auto;
}
.serial-guide-step .serial-guide-img img {
  width: 100%;
  height: auto;
  aspect-ratio: 9/18;
  object-fit: cover;
  display: block;
}
.serial-guide-step .serial-guide-desc {
  flex: 1 1 auto;
  min-width: 0;
}
@media (max-width: 900px) {
  .serial-guide-step .serial-guide-img {
    max-width: 120px;
  }
}
@media (max-width: 600px) {
  .serial-guide-step { flex-direction: column; align-items: stretch; }
  .serial-guide-step .serial-guide-img {
    margin-bottom: 0.7em;
    max-width: 60vw;
    width: 100%;
    aspect-ratio: 9/18;
    height: auto;
  }
  .serial-guide-step .serial-guide-img img {
    width: 100%;
    height: auto;
    aspect-ratio: 9/18;
    object-fit: cover;
  }
}

/* iOS バージョンタブ */
.ios-tabs {
  margin-top: 1.5em;
}

.ios-tabs__buttons {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
  justify-content: flex-start;
}

.ios-tabs__button {
  background: #fff;
  border: 2px solid #ddd;
  border-radius: 999px;
  padding: 0.6rem 1.2rem;
  font-weight: 700;
  cursor: pointer;
  color: #555;
  transition: all 0.2s ease;
  font-size: 0.95rem;
}

.ios-tabs__button:hover {
  border-color: #999;
}

.ios-tabs__button--active {
  background: var(--accent-blue);
  color: #fff;
  border-color: var(--accent-blue);
}

.ios-tabs__content {
  display: none;
}

.ios-tabs__content--active {
  display: block;
}