:root {
  color-scheme: light;
  --bg: #f5fbff;
  --bg-alt: #e8f4ff;
  --card: rgba(255, 255, 255, 0.92);
  --surface-strong: rgba(255, 255, 255, 0.85);
  --surface-soft: rgba(255, 255, 255, 0.7);
  --surface-faint: rgba(255, 255, 255, 0.45);
  --accent: #1b8cff;
  --accent-soft: rgba(27, 140, 255, 0.16);
  --accent-contrast: #ffffff;
  --accent-glow: rgba(195, 225, 255, 0.35);
  --text: #0f172a;
  --text-muted: #4f6f81;
  --border: rgba(8, 86, 150, 0.14);
  --shadow: 0 0px 10px rgba(73, 105, 182, 0.12);
  --chip-bg: rgba(27, 140, 255, 0.12);
  --chip-text: var(--accent);
  --button-secondary-bg: rgba(27, 140, 255, 0.14);
  --button-secondary-border: rgba(27, 140, 255, 0.28);
  --button-secondary-text: var(--accent);
  --surface-outline: rgba(8, 86, 150, 0.18);
  --hero-gradient: linear-gradient(140deg, #d9efff, #f7fcff 60%, #cae8ff);
  --hero-glow: rgba(27, 140, 255, 0.25);
  --radius-lg: 20px;
  --radius-sm: 12px;
  --max-width: 1200px;
  font-family: "Segoe UI", "Yu Gothic", "Hiragino Kaku Gothic ProN", sans-serif;
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0f111a;
  --bg-alt: #171a26;
  --card: #1f2433;
  --surface-strong: rgba(15, 17, 26, 0.75);
  --surface-soft: rgba(15, 17, 26, 0.6);
  --surface-faint: rgba(15, 17, 26, 0.45);
  --accent: #33c9ff;
  --accent-soft: rgba(51, 201, 255, 0.16);
  --accent-contrast: #061017;
  --accent-glow: rgba(14, 57, 72, 0.4);
  --text: #f5f6fa;
  --text-muted: #b3b8d4;
  --border: rgba(255, 255, 255, 0.12);
  --shadow: 0 18px 40px rgba(0, 0, 0, 0.35);
  --chip-bg: rgba(51, 201, 255, 0.18);
  --chip-text: var(--accent);
  --button-secondary-bg: rgba(255, 255, 255, 0.08);
  --button-secondary-border: rgba(255, 255, 255, 0.16);
  --button-secondary-text: var(--text);
  --surface-outline: rgba(255, 255, 255, 0.16);
  --hero-gradient: linear-gradient(140deg, #1a1f2e, #0f111a 60%, #0b0d13);
  --hero-glow: rgba(51, 201, 255, 0.24);
}

:root[data-theme="light-pink"] {
  color-scheme: light;
  --bg: #fff7fb;
  --bg-alt: #ffe8f2;
  --card: rgba(255, 255, 255, 0.92);
  --surface-strong: rgba(255, 255, 255, 0.88);
  --surface-soft: rgba(255, 255, 255, 0.72);
  --surface-faint: rgba(255, 255, 255, 0.5);
  --accent: #ff6fa4;
  --accent-soft: rgba(255, 111, 164, 0.18);
  --accent-contrast: #ffffff;
  --accent-glow: rgba(255, 184, 210, 0.35);
  --text: #352438;
  --text-muted: #7f5c75;
  --border: rgba(255, 111, 164, 0.22);
  --shadow: 0 0px 10px rgba(196, 114, 147, 0.15);
  --chip-bg: rgba(255, 111, 164, 0.16);
  --chip-text: var(--accent);
  --button-secondary-bg: rgba(255, 111, 164, 0.14);
  --button-secondary-border: rgba(255, 111, 164, 0.28);
  --button-secondary-text: var(--accent);
  --surface-outline: rgba(255, 111, 164, 0.22);
  --hero-gradient: linear-gradient(140deg, #ffe3ef, #fff7fb 60%, #ffd1e3);
  --hero-glow: rgba(255, 111, 164, 0.28);
}
:root,
:root[data-theme="light-blue"] {
  color-scheme: light;
}
li {
  list-style: none;
}
*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: none; /* 下線を削除 */
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.hero {
  position: relative;
  padding: 120px 24px 0px;
  background: var(--hero-gradient);
  overflow: hidden;
  margin-bottom: 50px;
}

.hero__video-wrapper {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
}

.hero__video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.85;
  filter: brightness(0.4) saturate(1);
}

.top-nav {
  position: absolute;
  top: 24px;
  left: 50%;
  transform: translateX(-50%);
  width: calc(100% - 48px);
  max-width: var(--max-width);
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 18px;
  padding: 16px 24px;
  border-radius: var(--radius-lg);
  background: var(--surface-strong);
  border: 1px solid var(--border);
  box-shadow: none;
  z-index: 2;
}

:root[data-theme="dark"] .top-nav {
  background:
    radial-gradient(120% 140% at 12% -10%, rgba(51, 201, 255, 0.3), transparent 58%),
    radial-gradient(120% 150% at 88% 120%, rgba(51, 201, 255, 0.18), transparent 65%),
    rgba(6, 17, 32, 0.45);
  border: 1px solid rgba(51, 201, 255, 0.24);
  outline: 1px solid rgba(255, 255, 255, 0.06);
  outline-offset: -1px;
  backdrop-filter: none;
}

.top-nav__toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  background: transparent;
  cursor: pointer;
  transition: background 0.2s ease, border-color 0.2s ease;
}

.top-nav__toggle:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.top-nav__toggle:hover {
  background: var(--surface-soft);
  border-color: var(--border);
}

.top-nav__toggle-bar,
.top-nav__toggle-bar::before,
.top-nav__toggle-bar::after {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text);
  border-radius: 999px;
  transition: transform 0.2s ease, opacity 0.2s ease, background 0.2s ease;
  content: "";
}

.top-nav__toggle-bar {
  position: relative;
}

.top-nav__toggle-bar::before {
  position: absolute;
  left: 0;
  top: -6px;
}

.top-nav__toggle-bar::after {
  position: absolute;
  left: 0;
  top: 6px;
}

.top-nav--open .top-nav__toggle-bar {
  background: transparent;
}

.top-nav--open .top-nav__toggle-bar::before {
  transform: translateY(6px) rotate(45deg);
}

.top-nav--open .top-nav__toggle-bar::after {
  transform: translateY(-6px) rotate(-45deg);
}

.top-nav__brand {
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text);
  flex-shrink: 0;
}

.top-nav__menu {
  display: flex;
  align-items: center;
  gap: 24px;
  flex: 1;
  justify-content: space-between;
}

.top-nav__links {
  display: flex;
  gap: 18px;
  font-size: 0.95rem;
  justify-content: center;
  flex: 1;
  flex-wrap: nowrap;
}

.top-nav__links a {
  color: var(--text-muted);
  transition: color 0.2s ease;
}

.top-nav__links a:hover {
  color: var(--text);
  text-decoration: none;
}

.top-nav__controls {
  display: flex;
  gap: 12px;
  align-items: center;
  flex-shrink: 0;
}

.theme-toggle {
  display: flex;
  align-items: center;
  gap: 8px;
}

.theme-toggle__label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
}

.theme-toggle__select {
  position: relative;
  display: inline-flex;
  align-items: center;
}

.theme-toggle__select select {
  appearance: none;
  border: 1px solid var(--surface-outline);
  border-radius: 12px;
  background: var(--surface-soft);
  color: var(--text);
  padding: 8px 36px 8px 12px;
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition: border 0.2s ease, background 0.2s ease;
}

.theme-toggle__select::after {
  content: "v";
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  pointer-events: none;
  color: var(--text-muted);
  font-size: 0.75rem;
}

.language-toggle {
  display: flex;
  align-items: center;
  gap: 8px;
}

.language-toggle__label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
}

.language-toggle__select {
  position: relative;
  display: inline-flex;
  align-items: center;
}

.language-toggle__select select {
  appearance: none;
  border: 1px solid var(--surface-outline);
  border-radius: 12px;
  background: var(--surface-soft);
  color: var(--text);
  padding: 8px 36px 8px 12px;
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition: border 0.2s ease, background 0.2s ease;
}

.language-toggle__select::after {
  content: "v";
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  pointer-events: none;
  color: var(--text-muted);
  font-size: 0.75rem;
}

.hero::before,
.hero::after {
  content: "";
  position: absolute;
  width: 520px;
  height: 520px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--hero-glow), transparent 65%);
  filter: blur(10px);
  z-index: 1;
}

.hero::before {
  top: -200px;
  left: -120px;
}

.hero::after {
  right: -200px;
  bottom: -160px;
}

.hero__content {
  position: relative;
  z-index: 1;
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
  padding: 32px 40px;
  border-radius: var(--radius-lg);
  color: #f6fbff;
}

.hero__content > * {
  position: relative;
  z-index: 1;
}

.hero__title {
  font-size: clamp(2.6rem, 5vw, 3.6rem);
  margin: 0 0 16px;
  line-height: 1.15;
  letter-spacing: 0.02em;
  text-shadow: 0 10px 28px rgba(4, 20, 45, 0.5);
}

.hero__description {
  margin: 0 auto 32px;
  max-width: 620px;
  text-shadow: 0 6px 18px rgba(4, 20, 45, 0.45);
}

.hero__actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.hero__cta {
  display: inline-block;
  padding: 14px 28px;
  border-radius: 999px;
  border: none;
  background: var(--accent);
  color: var(--accent-contrast);
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 0.02em;
  box-shadow: var(--shadow);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.hero__cta--ghost {
  background: #1b8cff;
  color: #ffffff;
  border: 1px solid #1b8cff;
  box-shadow: none;
}

.hero__cta--ghost:hover {
  box-shadow: 0 8px 20px var(--accent-soft);
}

.hero__cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 20px var(--accent-glow);
}

.hero__cta.is-disabled {
  opacity: 0.6;
  cursor: not-allowed;
  pointer-events: none;
  box-shadow: none;
}

.section {
  padding: 6px 24px;
  max-width: var(--max-width);
  margin: 0 auto;
}

.section--alt {
  background: var(--bg-alt);
  border-radius: var(--radius-lg);
  margin-top: 48px;
}

.section__header {
  text-align: center;
  margin-bottom: 48px;
}

.section__title {
  font-size: clamp(2rem, 3vw, 2.6rem);
  margin: 0 0 16px;
}

.section__subtitle {
  margin: 0 auto;
  color: var(--text-muted);
  max-width: 680px;
}

.section__note {
  margin-top: 24px;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.94rem;
}

.mod-layout {
  display: flex;
  align-items: flex-start;
  gap: 32px;
  margin-top: 30px;
}

.mod-grid {
  flex: 1 1 auto;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 32px;
  align-items: start;
}

.mod-grid__empty {
  grid-column: 1 / -1;
  text-align: center;
  background: var(--surface-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.mod-pagination {
  margin-top: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
}

.mod-pagination__pages {
  display: flex;
  align-items: center;
  gap: 8px;
}

.mod-pagination__control {
  appearance: none;
  border: 1px solid var(--border);
  background: var(--surface-strong);
  color: var(--text);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.2s ease;
}

.mod-pagination__control:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: var(--shadow);
}

.mod-pagination__control:disabled {
  cursor: not-allowed;
  opacity: 0.5;
  box-shadow: none;
}

.mod-pagination__page {
  appearance: none;
  border: 1px solid transparent;
  background: transparent;
  color: var(--text);
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.95rem;
  transition: transform 0.15s ease, box-shadow 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.mod-pagination__page:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: var(--shadow);
  background: var(--surface-soft);
  border-color: var(--border);
}

.mod-pagination__page:disabled {
  cursor: default;
  transform: none;
  box-shadow: none;
}

.mod-pagination__page--current {
  background: var(--accent-soft);
  color: var(--accent);
  border-color: var(--accent);
  cursor: default;
  box-shadow: none;
}

.mod-filters {
  position: static;
  align-self: flex-start;
  width: 280px;
  background: var(--surface-strong);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow);
}

/* 横並びフィルター: .mod-filters--inline を使うと、mod-grid の上に横向きで配置される */
.mod-filters--inline {
  width: 100%;
  background: transparent;
  border: none;
  padding: 12px 0 20px 0;
}

.mod-filters--inline .mod-filters__form {
  display: flex;
  flex-direction: row;
  gap: 16px;
  width: 100%;
  align-items: center;
  flex-wrap: wrap;
}

.mod-filters__form {
  padding: 0% 40px;
}

.mod-filters--inline .mod-filters__field {
  /* ラベルとセレクトを横並びにする */
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 8px;
  flex: 0 1 auto;
  min-width: auto;
  margin-bottom: 12px; /* Add margin to create spacing */
}

.mod-filters--inline .mod-filters__label {
  white-space: nowrap;
  font-size: 0.9rem;
  color: var(--text-muted);
  flex-shrink: 0;
}

.mod-filters--inline select {
  min-width: 140px;
  max-width: 220px;
  flex-shrink: 0;
}

.mod-filters--inline .mod-filters__reset {
  margin-left: auto;
  align-self: center;
  flex-shrink: 0;
}

.mod-filters__title {
  text-align: center;
  margin: 16px 16px;
  font-size: 2.2rem;
}

.mod-filters__form {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.mod-filters__field {
  display: flex;
  flex-direction: column;
  gap: 8px;
  color: var(--text-muted);
  font-size: 0.92rem;
}

.mod-filters__label {
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--text);
}

.mod-filters select {
  appearance: none;
  padding: 10px 14px;
  border-radius: 12px;
  border: 1px solid var(--surface-outline);
  background: var(--surface-soft);
  color: var(--text);
  font-size: 0.95rem;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.mod-filters select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.mod-filters__reset {
  align-self: flex-start;
  padding: 10px 18px;
  border-radius: 999px;
  border: 1px solid var(--surface-outline);
  background: transparent;
  color: var(--text-muted);
  font-weight: 600;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, color 0.2s ease;
}

.mod-filters__reset:hover {
  color: var(--text);
  transform: translateY(-1px);
}

.mod-card {
  background: var(--card);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 18px;
  border: 1px solid var(--border);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  align-self: start;
  height: fit-content;
}

.mod-card__media {
  margin: -28px -28px 0px;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  overflow: hidden;
  background: var(--surface-soft);
}

.mod-card__image {
  max-height: 200px; /* 高さを200pxに制限 */
  object-fit: cover; /* 画像の比率を保ちながら収める */
  width: 100%; /* 横幅をカードに合わせる */
}

.mod-card:hover {
  transform: translateY(-3px); /* 浮き上がりを控えめに */
  box-shadow: 0 12px 24px var(--accent-glow); /* 影の強度を減らす */
}

.mod-card__header {
  display: flex;
  gap: 16px;
  align-items: center;
}

.mod-card__badge {
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 600;
  font-size: 0.75rem;
}

.mod-card__title {
  margin: 0;
  font-size: 1.5rem;
  letter-spacing: 0.01em;
}

.mod-card__summary {
  margin: 0;
  color: var(--text);
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.6;
}

.mod-card__meta {
  color: var(--text-muted);
  font-size: 0.85rem;
  display: none;
  flex-wrap: wrap;
  gap: 8px;
}

.mod-card__description {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

.mod-card__description p {
  margin: 0;
}

.mod-card__description p + p {
  margin-top: 0.75rem;
}

.mod-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.mod-card__tag {
  padding: 4px 12px;
  border-radius: 999px;
  background: var(--chip-bg);
  font-size: 0.82rem;
  color: var(--chip-text);
}

.mod-card__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: auto;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 600;
  letter-spacing: 0.01em;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.button--primary {
  background: var(--accent);
  color: var(--accent-contrast);
}

.button--secondary {
  background: var(--button-secondary-bg);
  color: var(--button-secondary-text);
  border-color: var(--button-secondary-border);
}

.button:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 20px var(--accent-glow);
}

.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
  padding-bottom: 20px; /* 手順セクションの下に余白を追加 */
}

.step {
  background: var(--surface-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 24px;
}

.step__title {
  margin-top: 0;
}

.faq {
  display: grid;
  gap: 16px;
}

.faq__item {
  background: var(--surface-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
  font-size: 1rem;
}

.faq__item summary {
  cursor: pointer;
  font-weight: 600;
}

.faq__item[open] summary {
  color: var(--accent);
}

.contact {
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.contact--simple {
  background: transparent;
}

.contact--simple .contact__item {
  background: var(--surface-strong);
}

.contact__item {
  background: var(--surface-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 24px;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-bottom: 32px;
}

.contact-grid--single {
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
}

.contact-card {
  background: var(--surface-strong);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 16px;
}



.contact-card--request {
  border-top: 4px solid var(--button-secondary-border);
}

.contact-card__title {
  margin: 0;
  font-size: 1.35rem;
}

.contact-card__lead {
  margin: 0;
  color: var(--text-muted);
  line-height: 1.7;
}

.contact-card__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
  color: var(--text);
}

.contact-card__list li {
  position: relative;
  padding-left: 20px;
}

.contact-card__list li::before {
  content: "•";
  position: absolute;
  left: 4px;
  color: var(--accent);
}

.contact-card__note {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.contact-checklist {
  margin: 32px 0;
  padding: 28px;
  border-radius: var(--radius-lg);
  border: 1px dashed var(--border);
  background: var(--surface-soft);
}

.contact-checklist__title {
  margin: 0 0 12px;
  font-size: 1.25rem;
}

.contact-checklist__list {
  margin: 0;
  padding-left: 20px;
  line-height: 1.8;
  color: var(--text);
}

.contact-checklist__note {
  margin-top: 16px;
  font-size: 0.95rem;
  color: var(--text-muted);
}

.contact-steps {
  display: grid;
  gap: 16px;
  margin-bottom: 36px;
}

.contact-step {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 18px 22px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface-strong);
}

.contact-step__number {
  width: 32px;
  height: 32px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--accent);
  color: var(--accent-contrast);
  font-weight: 700;
}

.contact-step__title {
  margin: 0;
  font-size: 1.05rem;
}

.contact-step__text {
  margin: 4px 0 0;
  color: var(--text-muted);
  line-height: 1.7;
}

.contact__cta {
  margin-top: 32px;
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.contact__cta .button {
  margin-bottom: 35px;
}

.contact__item ul {
  list-style: none;
  padding: 0;
  margin: 12px 0 0;
  color: var(--text-muted);
}

.contact__item li + li {
  margin-top: 8px;
}

.updates {
  display: grid;
  gap: 24px;
}

.updates__empty {
  text-align: center;
  padding: 24px;
  background: var(--surface-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
}

.updates--preview {
  display: flex;
  flex-direction: column;
  gap: 18px;
  align-items: stretch;
}

.updates--list {
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}

.updates__actions,
.section__actions {
  margin-top: 24px;
  text-align: center;
  padding-bottom: 20px; /* もっと見るボタンの下に余白を追加 */
}

.update-card {
  background: var(--surface-strong);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 24px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.update-card--preview {
  flex-direction: row;
  align-items: center;
  gap: 24px;
}

.update-card--preview .update-card__body {
  flex: 1;
  margin: 0;
}

.update-card--preview .update-card__actions {
  margin-left: auto;
}

.update-card__date {
  font-size: 0.85rem;
  color: var(--accent);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin: 0;
}

.update-card__title {
  margin: 0;
  font-size: 1.2rem;
}

.update-card__body {
  margin: 0;
  color: var(--text-muted);
}

.update-card__actions {
  display: flex;
  gap: 12px;
  margin-top: 12px;
}

.footer {
  text-align: center;
  padding: 24px;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
  margin-top: 64px;
  font-size: 0.9rem;
}

.mod-detail {
  display: flex;
  justify-content: center;
}

.hero--detail {
  padding-bottom: 0;
}

.mod-detail__content {
  width: 100%;
  display: flex;
  flex-direction: column;
  background: var(--surface-strong);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow);
}

.mod-detail__media {
  margin: 0 0 32px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--surface-soft);
  max-height: 420px;
}

.mod-detail__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.mod-detail__body {
  display: flex;
  flex-wrap: wrap;
  gap: 32px 48px;
  align-items: flex-start;
}

.mod-detail__main {
  flex: 2 1 480px;
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.mod-detail__meta {
  flex: 1 1 280px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 20px;
  border-radius: var(--radius-sm);
  background: var(--surface-soft);
  border: 1px solid var(--border);
}

.mod-detail__section {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

@media (max-width: 960px) {
  .mod-detail__media {
    margin-bottom: 24px;
  }

  .mod-detail__body {
    flex-direction: column;
  }

  .mod-detail__main {
    flex-basis: auto;
    gap: 24px;
  }
}

.mod-detail__meta-row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
}

.mod-detail__meta-label {
  color: var(--text-muted);
  font-weight: 600;
  letter-spacing: 0.02em;
  flex-shrink: 0;
  white-space: nowrap;
}

.mod-detail__meta-value {
  color: var(--text);
  overflow-wrap: anywhere;
}


.mod-detail__section h2 {
  margin: 0;
  font-size: 1.4rem;
}

.mod-detail__section p {
  margin: 0;
  color: var(--text-muted);
  line-height: 1.7;
}

.mod-detail__download-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.mod-detail__download-list--single {
  margin-bottom: 8px;
}

.mod-detail__download-item {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 20px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface-soft);
}

.mod-detail__download-info {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.mod-detail__download-version {
  font-weight: 600;
  color: var(--text);
}

.mod-detail__download-meta {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.mod-detail__download-badge {
  align-self: flex-start;
  padding: 2px 10px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 600;
}

.mod-detail__download-unavailable {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.mod-detail__versions {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface-soft);
}

.mod-detail__versions summary {
  padding: 14px 18px;
  cursor: pointer;
  font-weight: 600;
  list-style: none;
  position: relative;
}

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

.mod-detail__versions summary::after {
  content: "+";
  position: absolute;
  right: 18px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.1rem;
  color: var(--text-muted);
}

.mod-detail__versions[open] summary {
  color: var(--accent);
}

.mod-detail__versions[open] summary::after {
  content: "-";
  color: var(--accent);
}

.mod-detail__versions .mod-detail__download-list {
  padding: 0 18px 18px;
}

.mod-detail__list {
  margin: 0;
  padding-left: 20px;
  color: var(--text-muted);
}

.download-modal[hidden] {
  display: none;
}

.download-modal {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1200;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}

.download-modal.is-visible {
  opacity: 1;
  pointer-events: auto;
}

.download-modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(6, 12, 23, 0.65);
}

.download-modal__dialog {
  position: relative;
  z-index: 1;
  width: min(520px, 92vw);
  padding: 28px;
  border-radius: var(--radius-lg);
  background: var(--card);
  border: 1px solid var(--border);
  box-shadow: 0 24px 48px rgba(6, 12, 23, 0.28);
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.download-modal__dialog:focus {
  outline: none;
}

.download-modal__close {
  position: absolute;
  top: 12px;
  right: 12px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-size: 1.4rem;
  cursor: pointer;
  line-height: 1;
}

.download-modal__close:hover {
  color: var(--accent);
}

.download-modal__title {
  margin: 0;
  font-size: 1.4rem;
}

.download-modal__fields {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.download-modal__field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.download-modal__field span {
  font-weight: 600;
  color: var(--text-muted);
}

.download-modal__field select {
  appearance: none;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface-strong);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%23a0aec0' d='M6 8a.9.9 0 0 1-.64-.27l-4.87-4.9a.9.9 0 0 1 1.28-1.27L6 5.7l4.23-4.14a.9.9 0 1 1 1.26 1.29l-4.87 4.85A.9.9 0 0 1 6 8Z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  background-size: 12px;
  color: var(--text);
  padding: 12px 16px;
  font-size: 1rem;
  cursor: pointer;
}

.download-modal__field select:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.download-modal__actions {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
}

.download-modal__actions .button {
  min-width: 120px;
}

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

.mod-detail__empty {
  width: 100%;
  padding: 32px;
  background: var(--surface-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.mod-detail__empty p {
  margin: 0;
  color: var(--text-muted);
}

.button.is-disabled {
  cursor: not-allowed;
  opacity: 0.6;
  pointer-events: none;
}

@media (max-width: 900px) {
  .top-nav {
    position: relative;
    top: 0;
    left: 0;
    transform: none;
    width: calc(100% - 32px);
    max-width: none;
    margin: 12px 16px 0;
    padding: 14px 16px;
  }

  .top-nav__toggle {
    display: inline-flex;
  }

  .top-nav__menu {
    position: absolute;
    top: calc(100% + 12px);
    left: 0;
    width: 100%;
    padding: 20px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    background: var(--surface-strong);
    box-shadow: var(--shadow);
    display: none;
    flex-direction: column;
    gap: 20px;
    z-index: 10;
  }

  .top-nav--open .top-nav__menu {
    display: flex;
  }

  .top-nav__links {
    width: 100%;
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }

  .top-nav__controls {
    width: 100%;
  }

  .theme-toggle,
  .theme-toggle__select,
  .theme-toggle__select select {
    width: 100%;
  }
}

@media (max-width: 720px) {
  .hero {
    padding: 96px 20px 72px;
  }

  .mod-card {
    padding: 24px;
  }

  .section {
    padding: 72px 20px;
  }

  .mod-layout {
    flex-direction: column;
  }

  .mod-filters {
    width: 100%;
  }

  /* モバイルでは横並びを解除して縦並びに戻す */
  .mod-filters--inline .mod-filters__form {
    flex-direction: column;
    gap: 12px;
    align-items: stretch;
  }

  .mod-filters--inline .mod-filters__field {
    flex-direction: column;
    gap: 8px;
  }

  .mod-filters--inline .mod-filters__reset {
    margin-left: 0;
    align-self: stretch;
  }

  .mod-detail__content {
    padding: 24px;
  }

  .mod-detail__media {
    max-height: 240px;
  }

  .update-card--preview {
    flex-direction: column;
    align-items: flex-start;
  }

  .update-card--preview .update-card__actions {
    margin-left: 0;
  }
}

@media (max-width: 1180px) {
  .mod-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 820px) {
  .mod-grid {
    grid-template-columns: repeat(1, minmax(0, 1fr));
  }
}


.update-card--preview .update-card__date {
  flex: 0 0 140px;
}

.update-card--preview .update-card__title {
  flex: 1;
  margin: 0;
}

#faq {
  margin-top: 20px; /* 上にマージンを追加 */
}