/*
 * Design tokens — Apple JP design system
 */
:root {
  /* Typography */
  --font-family-primary: "SF Pro JP", "SF Pro Text", "Apple TP", "Myriad Set Pro",
    "SF Pro Icons", "Hiragino Kaku Gothic Pro", "ヒラギノ角ゴ Pro W3",
    メイリオ, Meiryo, "ＭＳ Ｐゴシック", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --font-size-base: 12px;
  --font-weight-base: 400;
  --line-height-base: 17px;

  --font-size-xs:  12px;
  --font-size-sm:  14px;
  --font-size-md:  17px;
  --font-size-lg:  19px;
  --font-size-xl:  19.89px;
  --font-size-2xl: 24px;
  --font-size-3xl: 32px;
  --font-size-4xl: 34px;

  /* Colors */
  --color-surface-base:    #000000;
  --color-text-primary:    #1d1d1f;
  --color-text-link:       #0066cc;
  --color-text-inverse:    #ffffff;
  --color-surface-button:  #0071e3;
  --color-surface-strong:  #d2d2d7;
  --color-surface-muted:   #f5f5f7;
  --color-text-muted:      #6e6e73;

  /* Spacing */
  --space-1: 4px;
  --space-2: 5px;
  --space-3: 6px;
  --space-4: 7px;
  --space-5: 7.5px;
  --space-6: 8px;
  --space-7: 9px;
  --space-8: 9.6px;

  /* Radius */
  --radius-xs: 50px;
  --radius-sm: 980px;

  /* Motion */
  --motion-instant: 100ms;
  --motion-fast:    320ms;
}


/*
 * Base
 */
html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family-primary);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-base);
  line-height: var(--line-height-base);
  color: var(--color-text-primary);
  letter-spacing: -0.022em;
  -webkit-font-smoothing: antialiased;
}

a {
  text-decoration: none;
  color: var(--color-text-link);
  transition: opacity var(--motion-instant) ease;
}
a:hover {
  opacity: 0.8;
}
a:focus-visible {
  outline: 2px solid var(--color-text-link);
  outline-offset: 2px;
  border-radius: 2px;
}

.container {
  max-width: 960px;
}


/*
 * Header
 */
header {
  background: var(--color-surface-base);
}
header a,
header a:link,
header a:hover,
header a:visited {
  text-decoration: none;
  color: var(--color-text-inverse);
  transition: opacity var(--motion-instant) ease;
}
header a:hover {
  opacity: 0.8;
}
header a:focus-visible {
  outline: 2px solid var(--color-text-inverse);
  outline-offset: 2px;
}
header nav.navbar {
  padding-left: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
header .navbar-nav {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 4px;
}
header .navbar-nav .nav-link {
  font-size: var(--font-size-xs);
  font-weight: 500;
  color: var(--color-text-inverse);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  transition: background var(--motion-instant) ease;
}
header .navbar-nav .nav-link:hover {
  background: rgba(255,255,255,0.15);
  opacity: 1;
}
header h2 {
  font-size: var(--font-size-sm);
  font-weight: 600;
  line-height: 1em;
  margin: 0;
  color: var(--color-text-inverse);
  letter-spacing: -0.022em;
}


/*
 * Typography
 */
h1, h2, h3, h4, h5 {
  letter-spacing: -0.022em;
  font-weight: 600;
  color: var(--color-text-primary);
}
h1 { font-size: var(--font-size-4xl); line-height: 1.1; }
h2 { font-size: var(--font-size-3xl); line-height: 1.15; }
h3 { font-size: var(--font-size-2xl); line-height: 1.2; }
h4 { font-size: var(--font-size-lg);  line-height: 1.25; }
h5 { font-size: var(--font-size-md);  line-height: 1.3; }


/*
 * Buttons
 */
.btn {
  border-radius: var(--radius-sm);
  font-size: var(--font-size-sm);
  font-weight: 400;
  padding: var(--space-6) 18px;
  transition: background var(--motion-instant) ease, opacity var(--motion-instant) ease;
}
.btn:focus-visible {
  outline: 2px solid var(--color-surface-button);
  outline-offset: 2px;
}
a.btn-dark {
  width: 100%;
  text-align: center;
  margin-bottom: 1em;
  background: var(--color-text-primary);
  color: var(--color-text-inverse);
  border-radius: var(--radius-sm);
  transition: opacity var(--motion-instant) ease;
}
a.btn-dark:hover {
  opacity: 0.85;
  color: var(--color-text-inverse);
}
a.btn-dark:focus-visible {
  outline: 2px solid var(--color-text-primary);
  outline-offset: 2px;
}
a.btn-product {
  border: solid 1px var(--color-surface-strong);
  border-radius: var(--radius-xs);
  padding: var(--space-2) var(--space-6);
  margin: 0.2rem;
  font-size: var(--font-size-xs);
  color: var(--color-text-link);
  transition: border-color var(--motion-instant), background var(--motion-instant);
}
a.btn-product:hover {
  border-color: var(--color-text-link);
  background: rgba(0,102,204,0.05);
}
a.btn-product:focus-visible {
  outline: 2px solid var(--color-text-link);
  outline-offset: 2px;
}
a.btn-product.btn-secondary {
  color: #fff;
}

section {
  margin-bottom: 2.5rem;
}
section h3 {
  margin-bottom: 0.75rem;
}
section h4 {
  margin-bottom: 0.5rem;
}
section p:last-child {
  margin-bottom: 0;
}
/*
 * How to buy section
 */
#how-to-buy {
  background: var(--color-surface-muted);
  border-radius: 18px;
  padding: 2.25rem 0;
}
.how-eyebrow {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
  text-transform: uppercase;
  margin-bottom: 0.25rem;
}
#how-to-buy h3 {
  margin-bottom: 0;
}
.how-card {
  background: #fff;
  border-radius: 14px;
  padding: 1.5rem;
  width: 100%;
  display: flex;
  flex-direction: column;
  box-shadow: 0 1px 3px rgba(0,0,0,0.07), 0 0 1px rgba(0,0,0,0.06);
}
.how-card-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 0.85rem;
}
.how-card-icon svg {
  width: 20px;
  height: 20px;
}
.how-card-icon--dark {
  background: #1d1d1f;
  color: #fff;
}
.how-card-icon--blue {
  background: var(--color-surface-button);
  color: #fff;
}
.how-card h4 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 0.5rem;
}
.how-card > p {
  font-size: 12px;
  line-height: 1.65;
  color: var(--color-text-muted);
  margin-bottom: 0.75rem;
}
.how-links {
  list-style: none;
  padding: 0;
  margin: 0 0 0.75rem;
  flex-grow: 1;
}
.how-links li {
  font-size: 12px;
  padding: 0.35rem 0 0.35rem 1rem;
  border-bottom: 1px solid #f0f0f2;
  position: relative;
}
.how-links li::before {
  content: "›";
  position: absolute;
  left: 0;
  color: var(--color-text-muted);
  font-size: 14px;
  line-height: 1.4;
}
.how-links li:last-child {
  border-bottom: none;
}
.how-history {
  font-size: 11px !important;
  color: var(--color-text-muted) !important;
  margin-bottom: 0.75rem !important;
}
.how-card-cta {
  margin-top: auto;
  padding-top: 0.5rem;
}

#faq .faq-item {
  border-bottom: 1px solid var(--color-surface-strong);
  padding: 1rem 0;
}
#faq .faq-item:last-child {
  border-bottom: none;
}
#faq .faq-item h4 {
  margin-bottom: 0.4rem;
}


/*
 * Hero / Main visual
 */
#mainvisual {
  background: #1d1d1f;
  background-image: url('/images/background_halfgray.jpg');
  /* WebP対応ブラウザには軽量なWebP版を配信（JPEG比 約68%減） */
  background-image: -webkit-image-set(url('/images/background_halfgray.webp') type('image/webp'), url('/images/background_halfgray.jpg') type('image/jpeg'));
  background-image: image-set(url('/images/background_halfgray.webp') type('image/webp'), url('/images/background_halfgray.jpg') type('image/jpeg'));
  background-size: 100%;
  background-position: center center;
  background-repeat: no-repeat;
  margin-bottom: 2em;
  /* CLS防止: コンテンツの外側へのレイアウトシフトを抑制 */
  contain: layout style;
}
@media screen and (max-width: 960px) {
  #mainvisual {
    background-image: url('/images/background_halfgray_s.jpg');
    /* モバイルLCP改善: WebP版はJPEG比 約56%減（107KB→47KB） */
    background-image: -webkit-image-set(url('/images/background_halfgray_s.webp') type('image/webp'), url('/images/background_halfgray_s.jpg') type('image/jpeg'));
    background-image: image-set(url('/images/background_halfgray_s.webp') type('image/webp'), url('/images/background_halfgray_s.jpg') type('image/jpeg'));
  }
}
#mainvisual div {
  min-height: 280px;
  justify-content: center;
  align-items: center;
  display: flex;
}
#mainvisual .inner {
  display: table-box;
  margin: 0 auto;
}
#mainvisual h1 {
  line-height: 1em;
  font-weight: 600;
  color: var(--color-text-inverse);
  text-shadow: 0 0 20px rgba(0,0,0,0.5);
}
#mainvisual a {
  text-decoration: none;
  color: var(--color-text-inverse);
}
.mainvisual-subtitle {
  color: rgba(255, 255, 255, 0.82);
  font-size: 13px;
  margin: 0.3rem 0 0;
  text-shadow: 0 0 12px rgba(0,0,0,0.5);
  letter-spacing: 0.01em;
}
.mainvisual-cta {
  margin-top: 1.2rem;
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}
.mainvisual-cta .btn {
  font-size: 0.95rem;
  padding: 0.55rem 1.4rem;
  border-radius: 2rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  box-shadow: 0 2px 12px rgba(0,0,0,0.35);
}
.mainvisual-cta .btn-primary {
  background-color: #0071e3;
  border-color: #0071e3;
  color: #fff;
}
.mainvisual-cta .btn-primary:hover {
  background-color: #0077ed;
  border-color: #0077ed;
}
.mainvisual-cta .btn-outline-light {
  color: #fff;
  border-color: rgba(255,255,255,0.7);
}
.mainvisual-cta .btn-outline-light:hover {
  background-color: rgba(255,255,255,0.15);
  color: #fff;
}


/*
 * Images & breadcrumb
 */
img.goodsimg {
  width: 100%;
  height: auto;
}
ol.breadcrumb {
  background: transparent;
}
ol.breadcrumb a {
  text-decoration: none;
  color: var(--color-text-muted);
}
.breadcrumb-item + .breadcrumb-item::before {
  content: '-';
  padding: 0;
  margin-right: 0.5rem;
}


/*
 * Product type list
 */
#list-type .type-cell {
  padding: 1em;
  border-bottom: 1px solid var(--color-surface-strong);
}
#list-type .type-cell h4 {
  font-size: var(--font-size-lg);
}


/*
 * Calendar colours
 */
.date-sat { color: #5d8ebf; }
.date-sun { color: #d00707; }


/*
 * Panels
 */
p.panel {
  padding: 1em;
  background: var(--color-surface-muted);
  border-radius: var(--space-3);
}
p.panel-bordered {
  padding: 1em;
  background: transparent;
  color: var(--color-text-muted);
  border: solid 1px var(--color-surface-strong);
  border-radius: var(--space-3);
}


/*
 * Tables
 */
ul.description {
  list-style: none;
  padding: 0;
}
table.table-sm th {
  white-space: nowrap;
}
table td {
  color: var(--color-text-primary);
  font-size: var(--font-size-sm);
}
table#sales {
  font-size: var(--font-size-xs);
}


/*
 * Misc UI
 */
.btn-circle {
  width: 30px;
  height: 30px;
  text-align: center;
  padding: 6px 0;
  font-size: var(--font-size-xs);
  line-height: 1.428571429;
  border-radius: 15px;
}


/*
 * Timeline
 */
ul.timeline {
  list-style-type: none;
  position: relative;
}
ul.timeline:before {
  content: ' ';
  background: var(--color-surface-strong);
  display: inline-block;
  position: absolute;
  left: 29px;
  width: 2px;
  height: 100%;
  z-index: 400;
}
ul.timeline > li {
  margin: 20px 0;
  padding-left: 20px;
}
ul.timeline > li:before {
  content: ' ';
  background: white;
  display: inline-block;
  position: absolute;
  border-radius: 50%;
  border: 3px solid var(--color-text-link);
  left: 20px;
  width: 20px;
  height: 20px;
  z-index: 400;
}
ul.timeline > li.gray:before {
  border-color: var(--color-surface-strong);
}

.fresh-cta-bar {
  display: flex;
  gap: 8px;
  margin-top: 16px;
  flex-wrap: wrap;
}
.fresh-cta-bar .btn {
  flex: 1 1 auto;
  text-align: center;
}
.fresh-cta-btn {
  min-width: 160px;
}


/*
 * Article / Blog
 */
#article #contents {
  line-height: 200%;
  font-size: var(--font-size-md);
}

/* ブログ一覧アイテム */
.blog-list-item {
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--color-surface-strong);
}
.blog-list-item:last-child {
  border-bottom: none;
}
.blog-list-date {
  display: inline-block;
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  margin-bottom: 0.2rem;
  font-weight: 500;
}
.blog-list-item h5 {
  margin-bottom: 0.25rem;
  font-size: var(--font-size-md);
  line-height: 1.4;
}
.blog-list-item p {
  margin-bottom: 0;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  line-height: 1.5;
}
#article #contents h3 {
  border-bottom: solid 1px var(--color-surface-strong);
}


/*
 * Cards
 */
h3.card-title {
  min-height: 4rem;
  font-size: var(--font-size-md) !important;
}
h3.card-title a {
  text-decoration: none;
  color: var(--color-text-primary);
}
h3.card-title a:hover {
  color: var(--color-text-link);
}
.col-card {
  padding: 5px;
}
.card-body {
  padding: 10px;
}
.container .card .alert {
  margin-top: 1rem;
  padding: 0.5rem;
  background: var(--color-surface-muted);
  font-size: var(--font-size-xs);
  min-height: 12rem;
}


/*
 * Calendar widget
 */
.col-calendar {
  padding: 2px;
}
table.calendar {
  background: #fff;
  table-layout: fixed;
}
table.calendar th,
table.calendar td {
  color: var(--color-text-muted);
  font-weight: 400;
  font-size: var(--font-size-xs);
  line-height: 1rem;
  text-align: center;
  padding: 0;
  border: 0;
}
table.calendar th.yearmonth {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text-primary);
  line-height: 1.5rem;
}
table.calendar td.day {
  padding: 0;
  background: #fff;
  color: var(--color-text-primary);
  position: relative;
  text-align: center;
  line-height: 1.5rem;
  border: 0;
}
table.calendar td.blank {
  padding: 0;
  font-size: var(--font-size-xs);
  color: var(--color-surface-strong);
}
table td.day div.stockbar {
  position: absolute;
  top: 1px;
  bottom: 1px;
  opacity: 0.4;
  border-right: dotted 1px var(--color-surface-strong);
}
section.calcard {
  background: #fff;
  margin-bottom: 2rem;
}
section.calcard h3 {
  color: var(--color-text-primary);
  font-size: var(--font-size-sm);
  font-weight: 600;
}
section.calcard h3 a {
  color: var(--color-text-primary);
}


/*
 * Rarity badge
 */
.rarelity {
  font-size: var(--font-size-md);
  padding: 10px;
  margin-bottom: 5px;
}
.rarelity > svg {
  max-height: 1rem;
  width: auto;
}


/*
 * Social share
 */
.social {
  list-style: none;
}
.social a {
  color: #fff;
  border: none;
  width: 8rem;
  margin: 5px;
  display: inline-block;
  border-radius: var(--radius-xs);
}
.social .btn {
  border-radius: var(--radius-xs);
}
.social-facebook { background: #3b5998; }
.social-twitter  { background: #00acee; }
.social-link     { background: var(--color-text-muted); }


/*
 * SVG icons
 */
svg.bi {
  font-size: larger;
  height: 1.5rem;
  width: auto;
}
svg.bi-house-door-fill {
  height: 1rem;
  width: auto;
}


/*
 * Footer
 */
footer {
  background: var(--color-surface-muted);
  padding-top: 1em;
  margin-top: 2em;
  color: var(--color-text-muted);
  font-size: var(--font-size-xs);
}
footer a,
footer a:link,
footer a:visited,
footer a:hover {
  color: var(--color-text-muted);
  text-decoration: none;
}
footer a:focus-visible {
  outline: 2px solid var(--color-text-link);
  outline-offset: 2px;
}
footer ul {
  list-style: none;
  margin: 0;
  padding: 0;
  margin-bottom: 1em;
  line-height: 1.5em;
}
footer h5 {
  padding: 5px;
  font-size: var(--font-size-sm);
  color: var(--color-text-primary);
}
footer li {
  display: inline-block;
  word-wrap: break-word;
  word-break: break-all;
  padding: 2px 4px;
  margin: 0 0 5px 5px;
}
footer li a {
  font-size: var(--font-size-xs);
  display: inline-block;
  line-height: 1em;
}
footer .copyright {
  border-top: solid 1px var(--color-surface-strong);
  margin-top: 1em;
  padding-top: 1em;
  padding-bottom: 1em;
  text-align: center;
  font-size: var(--font-size-xs);
}


/*
 * Stock status badge on spec pages (.spec-stock-badge)
 */
.clearmodel-note {
  background: #fff;
  border: 1px solid var(--color-surface-strong);
  border-radius: 10px;
  padding: 0.9rem 1rem 0.35rem;
  margin-bottom: 1.25rem;
}
.cn-section {
  margin-bottom: 0.6rem;
}
.cn-heading {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin: 0 0 0.15rem;
}
.cn-section p {
  font-size: var(--font-size-sm);
  color: var(--color-text-primary);
  line-height: 1.65;
  margin: 0;
}
.spec-stock-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  border-radius: 8px;
  font-size: var(--font-size-sm);
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
}
.spec-stock-badge.in-stock {
  background: #e6f5ec;
  color: #1a7a3e;
  border: 1px solid #a8d8b9;
}
.spec-stock-badge.in-stock svg {
  color: #28a745;
  flex-shrink: 0;
}
.spec-stock-badge.out-of-stock {
  background: var(--color-surface-muted);
  color: var(--color-text-muted);
  border: 1px solid var(--color-surface-strong);
}
.spec-stock-badge.out-of-stock svg {
  color: var(--color-surface-strong);
  flex-shrink: 0;
}


/*
 * Next steps section (#next-steps) on spec pages
 */
#next-steps .next-step-card {
  background: var(--color-surface-muted);
  border: 1px solid var(--color-surface-strong);
  border-radius: 12px;
  height: 100%;
}
#next-steps .next-step-title {
  font-size: var(--font-size-sm);
  font-weight: 600;
  margin-bottom: 0.4rem;
  color: var(--color-text-primary);
}


/*
 * Today's stock summary cards (#today-stock)
 */
#today-stock .today-stock-card {
  background: var(--color-surface-muted);
  border: 1px solid var(--color-surface-strong);
  border-radius: 12px;
  color: var(--color-text-primary);
  text-decoration: none;
  transition: border-color var(--motion-instant) ease, box-shadow var(--motion-instant) ease;
}
#today-stock .today-stock-card:hover {
  border-color: var(--color-text-link);
  box-shadow: 0 2px 12px rgba(0,102,204,0.12);
  color: var(--color-text-primary);
}
#today-stock .today-stock-label {
  font-size: var(--font-size-sm);
  font-weight: 600;
  margin-bottom: 0.25rem;
}
#today-stock .today-stock-count {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--color-text-primary);
  line-height: 1.1;
}
#today-stock .today-stock-count span {
  font-size: var(--font-size-sm);
  font-weight: 400;
  color: var(--color-text-muted);
  margin-left: 2px;
}
#today-stock .today-stock-cta {
  font-size: var(--font-size-xs);
  color: var(--color-text-link);
  margin-top: 0.4rem;
}

/*
 * Blog radar panel (homepage top blog CTA)
 */
#blog-radar {
  margin-bottom: 2rem;
}
.blog-radar-panel {
  background: linear-gradient(135deg, #0a1628 0%, #1a2d5a 100%);
  border-radius: 16px;
  padding: 1.5rem 1.75rem;
  color: #fff;
}
.blog-radar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 0.6rem;
}
.blog-radar-heading-wrap {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}
.blog-radar-heading-wrap h3 {
  color: #fff;
  margin: 0;
}
.blog-radar-badge {
  background: #ff3b30;
  color: #fff;
  font-size: 0.72em;
  font-weight: 700;
  padding: 0.15em 0.55em;
  border-radius: 4px;
  letter-spacing: 0.04em;
  white-space: nowrap;
  flex-shrink: 0;
}
.blog-radar-desc {
  color: rgba(255,255,255,0.75);
  font-size: 0.9em;
  margin-bottom: 1rem;
}
.blog-radar-all-btn {
  white-space: nowrap;
  flex-shrink: 0;
}
.blog-radar-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
  margin-bottom: 1.1rem;
}
.blog-radar-card {
  display: block;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 10px;
  padding: 0.85rem 1rem;
  text-decoration: none;
  color: #fff;
  transition: background 0.15s, border-color 0.15s;
}
.blog-radar-card:hover {
  background: rgba(255,255,255,0.15);
  border-color: rgba(255,255,255,0.35);
  color: #fff;
  text-decoration: none;
}
.blog-radar-card .latest-blog-date {
  color: rgba(255,255,255,0.55);
}
.blog-radar-card .latest-blog-title {
  color: #fff;
}
.blog-radar-card .latest-blog-excerpt {
  color: rgba(255,255,255,0.65);
}
.blog-radar-cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  align-items: center;
}
.blog-radar-cta-row .btn-outline-dark {
  color: rgba(255,255,255,0.8);
  border-color: rgba(255,255,255,0.35);
}
.blog-radar-cta-row .btn-outline-dark:hover {
  background: rgba(255,255,255,0.15);
  color: #fff;
}
.blog-radar-cta-main {
  font-weight: 600;
}

/* mainvisual: blog CTAボタン */
.mainvisual-blog-cta {
  color: #1a1a1a;
  font-weight: 600;
}
.mainvisual-blog-cta:hover {
  color: #000;
}

/*
 * Latest blog section on homepage
 */
#latest-blog {
  background: var(--color-surface-muted);
  padding: 2rem 0;
  margin-bottom: 2.5rem;
  border-top: 3px solid var(--color-text-primary);
}
.latest-blog-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.latest-blog-all {
  white-space: nowrap;
  flex-shrink: 0;
}
.latest-blog-card {
  display: block;
  background: #fff;
  border-radius: 8px;
  padding: 1rem 1.1rem;
  text-decoration: none;
  color: inherit;
  height: 100%;
  border: 1px solid var(--color-surface-strong);
  transition: box-shadow 0.15s, transform 0.15s;
}
.latest-blog-card:hover {
  box-shadow: 0 4px 16px rgba(0,0,0,0.10);
  transform: translateY(-2px);
  color: inherit;
  text-decoration: none;
}
.latest-blog-date {
  font-size: 0.78em;
  color: var(--color-text-muted);
  margin-bottom: 0.35rem;
}
.latest-blog-title {
  font-size: 0.95em;
  font-weight: 600;
  line-height: 1.4;
  color: var(--color-text-primary);
  margin-bottom: 0.4rem;
}
.latest-blog-excerpt {
  font-size: 0.82em;
  color: var(--color-text-muted);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/*
 * Popular high-value models banner
 */
.popular-highvalue-banner {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  background: var(--color-surface-muted);
  border: 1px solid var(--color-surface-strong);
  border-radius: 10px;
  padding: 0.75rem 1rem;
}
.popular-highvalue-icon {
  background: #1d1d1f;
  color: #fff;
  font-size: 0.72em;
  font-weight: 800;
  padding: 0.2em 0.55em;
  border-radius: 5px;
  letter-spacing: 0.04em;
  flex-shrink: 0;
}
.popular-highvalue-text {
  font-size: 0.875em;
  color: var(--color-text-secondary);
  flex: 1;
  min-width: 180px;
}

/*
 * iPhone highlight section
 */
#iphone-highlight {
  background: var(--color-surface-muted);
  padding: 1.5rem 0;
  margin-bottom: 2.5rem;
}

/*
 * Category highlight sections (mac-highlight, ipad-highlight)
 */
#mac-highlight,
#ipad-highlight {
  background: var(--color-surface-muted);
  padding: 1.5rem 0;
  border-radius: 12px;
  margin-bottom: 2.5rem;
}

/*
 * Ad placeholder
 */
.ad {
  min-height: 280px;
  margin-bottom: 1em;
}
/* CLS防止: AdSense ins要素自体にも最小高さを設定 */
ins.adsbygoogle[data-ad-format="auto"] {
  min-height: 90px;
}
@media (min-width: 768px) {
  ins.adsbygoogle[data-ad-format="auto"] {
    min-height: 280px;
  }
}
@media (max-width: 767px) {
  .ad {
    min-height: 100px;
  }
}


/*
 * Back-to-top button
 */
#return-to-top {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background: rgba(0,0,0,0.7);
  width: 50px;
  height: 50px;
  display: none;
  text-decoration: none;
  border-radius: 50%;
  transition: background var(--motion-fast) ease;
}
#return-to-top i {
  color: #fff;
  margin: 0;
  position: relative;
  left: 16px;
  top: 13px;
  transition: top var(--motion-fast) ease;
}
#return-to-top:hover {
  background: rgba(0,0,0,0.9);
}
#return-to-top:hover i {
  color: #fff;
  top: 5px;
}


/*
 * Misc
 */
.fb_iframe_widget > span {
  vertical-align: baseline !important;
}


/* ============================================================
 * Mobile responsive optimizations (max 767px)
 * モバイル向けレスポンシブ最適化
 * ============================================================ */

@media (max-width: 767px) {

  /* --- ベースフォント：12px → 15px（可読性向上） ----------- */
  body {
    font-size: 15px;
    line-height: 1.47;
  }

  /* --- 見出しサイズをモバイル画面に合わせて縮小 ----------- */
  h1 { font-size: 24px; }
  h2 { font-size: 20px; }
  h3 { font-size: 18px; }
  h4 { font-size: 16px; }

  /* --- コンテナの左右余白を確保 --------------------------- */
  .container {
    padding-right: 16px;
    padding-left: 16px;
  }

  /* --- ボタン：タッチターゲット44px以上を確保 ------------- */
  .btn {
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 15px;
    padding: 10px 18px;
  }
  a.btn-dark {
    min-height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 15px;
  }
  a.btn-product {
    min-height: 44px;
    font-size: 13px;
    padding: 7px 12px;
    margin: 0.2rem 0.15rem;
  }

  /* --- テーブル ------------------------------------------- */
  table td {
    font-size: 13px;
    padding: 6px 4px;
  }
  table.table-sm th,
  table.table-sm td {
    padding: 5px 6px;
    font-size: 13px;
  }
  table#sales {
    font-size: 12px;
  }

  /* --- カレンダー ----------------------------------------- */
  .col-calendar {
    padding: 3px;
  }
  table.calendar th,
  table.calendar td {
    font-size: 12px;
    line-height: 1.4rem;
  }
  table.calendar th.yearmonth {
    font-size: 14px;
    line-height: 1.8rem;
  }
  table.calendar td.day {
    line-height: 1.8rem;
  }
  section.calcard h3 {
    font-size: 14px;
  }

  /* --- カード -------------------------------------------- */
  h3.card-title {
    font-size: 14px !important;
    min-height: auto;
  }
  .card-body {
    padding: 12px;
  }
  .container .card .alert {
    min-height: 8rem;
    font-size: 13px;
  }

  /* --- Hero / Main visual --------------------------------- */
  #mainvisual div {
    min-height: 180px;
  }
  #mainvisual h1 {
    font-size: 22px;
  }

  /* --- FAQ セクション ------------------------------------ */
  #faq .faq-item {
    padding: 0.9rem 0;
  }
  #faq .faq-item h4 {
    font-size: 15px;
  }

  /* --- パネル -------------------------------------------- */
  p.panel,
  p.panel-bordered {
    padding: 1em;
    font-size: 14px;
  }

  /* --- フッター ------------------------------------------ */
  footer {
    font-size: 13px;
  }
  footer li {
    padding: 4px 6px;
    margin: 0 2px 6px 2px;
  }
  footer li a {
    font-size: 13px;
  }
  footer h5 {
    font-size: 15px;
  }

  /* --- 在庫タイムライン ---------------------------------- */
  ul.timeline > li {
    padding-left: 18px;
  }

  /* --- 広告コンテナ -------------------------------------- */
  /* CLS防止: 広告読み込み前のスペースを予約してレイアウトシフトを最小化 */
  .ad {
    min-height: 100px;
  }
  ins.adsbygoogle {
    display: block !important;
    min-height: 100px;
  }

  /* --- 戻るボタン ---------------------------------------- */
  #return-to-top {
    width: 44px;
    height: 44px;
    bottom: 16px;
    right: 16px;
  }
  #return-to-top i {
    left: 14px;
    top: 11px;
  }

  /* --- テーブル横スクロール ------------------------------ */
  .table-responsive {
    -webkit-overflow-scrolling: touch;
    overflow-x: auto;
  }

  /* --- 商品一覧グリッド（type-list）: 2カラム最適化 ------ */
  #type-list .type-cell {
    padding: 0.6rem 0.4rem;
  }
  #type-list .type-cell .goodsimg {
    max-height: 6rem !important;
  }
  #type-list .type-cell h4 {
    font-size: 12px;
    margin-top: 0.3rem;
  }

  /* --- ページサマリー・ガイドセクション ------------------- */
  .page-summary .panel,
  .page-guide .panel {
    font-size: 13px;
    line-height: 1.6;
  }

  /* --- 主要LPのメインビジュアルを小さく ------------------- */
  #mainvisual .inner {
    padding: 1rem 0;
  }

  /* --- カレンダーLP説明文（alertボックス）---------------- */
  .container .alert {
    font-size: 13px;
    line-height: 1.6;
    padding: 0.75rem;
  }

  /* --- カレンダーガイドボックス・チェックリスト ----------- */
  .cal-guide-box {
    font-size: 0.9rem !important;
    line-height: 1.6 !important;
    padding: 0.75rem !important;
  }
  .cal-tip-list li {
    padding: 5px 0;
    font-size: 13px;
  }
  .mac-studio-guide-box {
    font-size: 0.9rem !important;
    line-height: 1.6 !important;
    padding: 0.75rem !important;
  }
  .mac-studio-tip-list li {
    padding: 5px 0;
    font-size: 13px;
  }

  /* --- how-to-buy カード: モバイル最適化 ------------------- */
  .how-card {
    padding: 1.1rem;
  }
  .how-card > p {
    font-size: 13px;
  }
  .how-links li {
    font-size: 13px;
    padding: 0.5rem 0 0.5rem 1rem;
  }

  /* --- 本日の在庫カード: タップ領域を確保 ------------------ */
  #today-stock .today-stock-card {
    padding: 1rem 0.5rem;
    min-height: 90px;
  }
  #today-stock .today-stock-label {
    font-size: 13px;
  }
  #today-stock .today-stock-count {
    font-size: 28px;
  }

  /* --- メインビジュアルサブタイトル ----------------------- */
  .mainvisual-subtitle {
    font-size: 12px;
  }

  /* --- メインビジュアルCTAボタン: モバイル最適化 ----------- */
  .mainvisual-cta {
    margin-top: 1rem;
    gap: 0.5rem;
  }
  .mainvisual-cta .btn {
    font-size: 0.85rem;
    padding: 0.5rem 1.1rem;
  }

  /* --- 新入荷CTAバー: モバイルで全幅ボタン ---------------- */
  .fresh-cta-bar {
    flex-direction: column;
    gap: 0.5rem;
  }
  .fresh-cta-bar .btn,
  .fresh-cta-btn {
    width: 100%;
    min-width: unset;
  }

  /* --- 広告エリア: モバイルでの視認性確保 ----------------- */
  .ad {
    min-height: 100px;
  }

  /* --- 最新ブログカード: モバイルで2列グリッド ------------- */
  #latest-blog .col-12.col-md-4 {
    flex: 0 0 50%;
    max-width: 50%;
  }
  #latest-blog .col-12.col-md-4:first-child {
    flex: 0 0 100%;
    max-width: 100%;
  }

  /* --- popular high-value banner: モバイル縦並び ---------- */
  .popular-highvalue-banner {
    flex-direction: column;
    align-items: flex-start;
  }
  .popular-highvalue-banner .btn {
    width: 100%;
  }

  /* --- blog-radar: モバイル最適化 ------------------------ */
  .blog-radar-panel {
    padding: 1.1rem 1rem;
    border-radius: 12px;
  }
  .blog-radar-cards {
    grid-template-columns: 1fr;
    gap: 0.5rem;
  }
  .blog-radar-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.6rem;
  }
  .blog-radar-all-btn {
    width: 100%;
    text-align: center;
  }
  .blog-radar-cta-row {
    flex-direction: column;
  }
  .blog-radar-cta-row .btn {
    width: 100%;
    text-align: center;
  }

  /* --- メインビジュアルCTA: モバイルで全幅ボタン ----------- */
  .mainvisual-cta {
    flex-direction: column;
    align-items: stretch;
  }
  .mainvisual-cta .btn {
    width: 100%;
    text-align: center;
  }
}

/* ============================================================
 * Tablet responsive optimizations (768px – 1024px)
 * タブレット向けレスポンシブ最適化
 * ============================================================ */

/* --- タブレット基本フォント・レイアウト ------------------- */
@media (min-width: 768px) and (max-width: 1024px) {

  /* ベースフォントを少し大きく：12px → 14px */
  body {
    font-size: 14px;
    line-height: 20px;
  }

  /* 見出しをタブレット向けに調整 */
  h1 { font-size: 28px; }
  h2 { font-size: 24px; }
  h3 { font-size: 20px; }
  h4 { font-size: 18px; }

  /* コンテナを画面幅いっぱいに活用 */
  .container {
    max-width: 100%;
    padding-right: 24px;
    padding-left: 24px;
  }

  /* --- ナビゲーション・ヘッダー --------------------------- */
  header nav.navbar {
    padding: 0 8px;
  }
  header h2 {
    font-size: 16px;
  }

  /* --- ボタン：タッチターゲットを44px以上に -------------- */
  .btn {
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 15px;
    padding: 10px 20px;
  }
  a.btn-dark {
    min-height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 15px;
  }
  a.btn-product {
    min-height: 36px;
    font-size: 13px;
    padding: 6px 10px;
  }

  /* --- テーブル ------------------------------------------- */
  table td {
    font-size: 14px;
    padding: 8px 6px;
  }
  table.table-sm th,
  table.table-sm td {
    padding: 6px 8px;
  }
  table#sales {
    font-size: 13px;
  }

  /* --- カレンダー ----------------------------------------- */
  .col-calendar {
    padding: 4px;
  }
  table.calendar th,
  table.calendar td {
    font-size: 13px;
    line-height: 1.4rem;
  }
  table.calendar th.yearmonth {
    font-size: 15px;
    line-height: 1.8rem;
  }
  table.calendar td.day {
    line-height: 1.8rem;
  }
  section.calcard h3 {
    font-size: 15px;
  }

  /* --- カード -------------------------------------------- */
  h3.card-title {
    font-size: 15px !important;
    min-height: 3.5rem;
  }
  .card-body {
    padding: 14px;
  }
  .container .card .alert {
    min-height: 10rem;
    font-size: 13px;
  }

  /* --- Hero / Main visual --------------------------------- */
  #mainvisual div {
    min-height: 300px;
  }
  #mainvisual h1 {
    font-size: 26px;
  }

  /* --- FAQ セクション ------------------------------------ */
  #faq .faq-item {
    padding: 1.2rem 0;
  }
  #faq .faq-item h4 {
    font-size: 16px;
  }

  /* --- パネル -------------------------------------------- */
  p.panel,
  p.panel-bordered {
    padding: 1.2em;
    font-size: 14px;
  }

  /* --- フッター ------------------------------------------ */
  footer {
    font-size: 13px;
  }
  footer li {
    padding: 3px 6px;
    margin: 0 2px 6px 2px;
  }
  footer li a {
    font-size: 13px;
  }
  footer h5 {
    font-size: 15px;
  }

  /* --- 在庫タイムライン ---------------------------------- */
  ul.timeline > li {
    padding-left: 24px;
  }

  /* --- 広告コンテナ -------------------------------------- */
  /* CLS防止: タブレットでも広告スペースを予約してレイアウトシフトを最小化 */
  .ad {
    min-height: 100px;
  }
  ins.adsbygoogle {
    display: block !important;
    min-height: 100px;
  }

  /* --- 戻るボタン ---------------------------------------- */
  #return-to-top {
    width: 54px;
    height: 54px;
  }
  #return-to-top i {
    left: 18px;
    top: 15px;
  }
}

/* --- タブレット縦向き（portrait）向け追加調整 ------------- */
@media (min-width: 768px) and (max-width: 1024px) and (orientation: portrait) {
  /* カレンダーをポートレートで2列表示を確保 */
  .col-sm-6.col-calendar {
    flex: 0 0 50%;
    max-width: 50%;
  }

  /* 在庫テーブルは横スクロール許容 */
  .table-responsive {
    -webkit-overflow-scrolling: touch;
    overflow-x: auto;
  }

  /* ナビゲーションボタン行：タブレット縦でも2列×2行 */
  .row.g-2 .col-6.col-sm-3 {
    flex: 0 0 50%;
    max-width: 50%;
  }
}

/* --- タブレット横向き（landscape）向け追加調整 ----------- */
@media (min-width: 768px) and (max-width: 1024px) and (orientation: landscape) {
  /* ランドスケープでは4列ナビを確保 */
  .row.g-2 .col-6.col-sm-3 {
    flex: 0 0 25%;
    max-width: 25%;
  }

  /* カレンダーを横向きで3列表示 */
  .col-sm-6.col-calendar {
    flex: 0 0 33.333333%;
    max-width: 33.333333%;
  }
}

/* === 週次修正 2026-06-14: モバイル最適化・広告配置改善 === */
@media (max-width: 767px) {
  /* タップターゲットを最低44pxに確保 */
  .btn { min-height: 44px; display: inline-flex; align-items: center; justify-content: center; }
  /* 在庫テーブルのモバイル表示改善 */
  #stocks td { font-size: 0.8rem; padding: 4px 3px; }
  #stocks .table-responsive { -webkit-overflow-scrolling: touch; }
  /* 広告ユニットのモバイル最小高さ確保 */
  .adsbygoogle[data-ad-format="auto"] { min-height: 100px; }
  /* 在庫テーブル内の●/◆リンクのタップ領域拡大（2026-07-11: モバイルセッション-20.7%対応） */
  #stocks td.text-center a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 32px;
    min-height: 32px;
  }
}
/* タッチデバイス用のアクティブ状態フィードバック */
@media (hover: none) and (pointer: coarse) {
  .btn:active { opacity: 0.75; transform: scale(0.97); transition: opacity 0.1s, transform 0.1s; }
}

/* === 週次修正 2026-06-16: モバイル追加最適化・LCP/CLS改善 === */
@media (max-width: 767px) {
  /* ナビゲーションリンクのタップターゲット拡大（現状4px paddingのためhit areaが小さい） */
  header .navbar-nav .nav-link {
    padding: 10px 12px;
    min-height: 44px;
    display: inline-flex;
    align-items: center;
  }
  /* メインビジュアルのCLS防止（高さ予約） */
  #mainvisual {
    min-height: 140px;
  }
  /* 広告プレースホルダーの高さ明示（CLS防止） */
  .ad {
    min-height: 90px;
    contain: layout;
  }
  /* 今日の在庫カードのタップターゲット強化 */
  .today-stock-card {
    min-height: 80px;
    display: flex;
    flex-direction: column;
    justify-content: center;
  }
  /* フォントサイズの最小値確保（読みやすさ） */
  p, li { font-size: 14px; line-height: 1.6; }
  .faq-item p { font-size: 14px; }
}

/* === 週次修正 2026-06-22: カレンダーカード画像CLS防止・モバイル改善 === */
/* カレンダーカード画像: 高さを固定してCLSを防止 */
.calcard .card-img-top {
  aspect-ratio: 4 / 3;
  height: 180px !important;
  width: 100%;
  object-fit: contain;
  background: #f5f5f7;
  padding: 1rem;
}
@media (max-width: 767px) {
  /* モバイルでのカレンダーカード間のスペースを調整 */
  .calcard { margin-bottom: 1rem; }
  /* 在庫テーブルのスクロールヒントのスタイル */
  .stock-scroll-hint { color: #6c757d; font-size: 0.8rem; text-align: right; margin-bottom: 0.25rem; }
}

/* === 週次修正 2026-06-22: モバイルCTA・LCP改善 === */
@media (max-width: 767px) {
  /* メインビジュアルのH1フォントを読みやすく */
  #mainvisual h1 {
    font-size: 20px;
    line-height: 1.4;
  }
  /* ブログRADAR CTAのタッチターゲット確保 */
  .blog-radar-cta-main {
    min-height: 48px;
    font-size: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
  }
  /* 今日の在庫カードのCTA文字を大きく */
  .today-stock-cta {
    font-size: 13px;
    font-weight: bold;
  }
  /* カレンダーナビボタンの行間確保 */
  .cal-nav-btn, .stock-nav-btn {
    line-height: 1.3;
    padding: 10px 8px;
  }
  /* モバイルでのパネルテキスト読みやすさ */
  .alert {
    font-size: 14px;
    line-height: 1.7;
  }
}


/*
 * Calendar navigation buttons (consolidated from inline styles)
 * カレンダーナビボタンのモバイル最適化: タップターゲット44px確保
 */
@media (max-width: 767px) {
  .cal-nav-btn, .mac-studio-nav-btn, .ipad-nav-btn, .stock-nav-btn {
    min-height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
  }
  .cal-guide-box, .mac-studio-guide-box {
    font-size: 1rem !important;
    line-height: 1.6 !important;
    padding: 0.75rem !important;
  }
  .cal-tip-list li, .mac-studio-tip-list li {
    padding: 6px 0;
  }
}

@media (min-width: 768px) and (max-width: 1024px) {
  .cal-nav-btn, .mac-studio-nav-btn, .ipad-nav-btn, .stock-nav-btn {
    min-height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
  }
  .cal-guide-box, .mac-studio-guide-box {
    font-size: 1rem !important;
    line-height: 1.7 !important;
    padding: 1.2rem !important;
  }
  .cal-tip-list li, .mac-studio-tip-list li {
    padding: 7px 0;
    font-size: 14px;
  }
}