/* 計算機ページ専用（既存 styles.css と併用） */
.tools-hero {
  background: linear-gradient(165deg, #fff 0%, var(--cream) 45%, var(--cream-2) 100%);
  border-bottom: 1px solid var(--line);
  padding: 1.5rem 1.25rem 1.75rem;
}
.tools-hero__inner {
  max-width: var(--max);
  margin: 0 auto;
}
.tools-hero h1 {
  margin: 0.35rem 0 0.6rem;
  font-size: clamp(1.45rem, 4.5vw, 2rem);
  line-height: 1.35;
  letter-spacing: -0.02em;
}
.tools-hero .lead {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.98rem;
}
.tools-search {
  margin-top: 1.1rem;
  position: relative;
}
.tools-search input {
  width: 100%;
  font: inherit;
  font-size: 1.05rem;
  padding: 0.95rem 1rem;
  border: 1.5px solid var(--line);
  border-radius: 12px;
  background: #fff;
  box-shadow: var(--shadow-sm);
}
.tools-search input:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}
.tools-search__results {
  position: absolute;
  left: 0;
  right: 0;
  top: calc(100% + 4px);
  z-index: 20;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: var(--shadow);
  max-height: 60vh;
  overflow: auto;
}
.tools-search__hit {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  padding: 0.75rem 1rem;
  text-decoration: none;
  border-bottom: 1px solid var(--line);
}
.tools-search__hit:last-child {
  border-bottom: 0;
}
.tools-search__hit strong {
  font-size: 0.95rem;
}
.tools-search__hit span {
  font-size: 0.8rem;
  color: var(--muted);
}
.tools-search__hit:hover,
.tools-search__hit:focus {
  background: var(--accent-soft);
}

.tools-section {
  max-width: var(--max);
  margin: 0 auto;
  padding: 1.5rem 1.25rem;
}
.tools-section__head {
  margin-bottom: 0.9rem;
}
.tools-section__head h2 {
  margin: 0 0 0.35rem;
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.tools-section__head p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.92rem;
}

.tools-popular,
.tools-cat-grid,
.tools-page-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.65rem;
}
.tools-popular {
  grid-template-columns: 1fr;
}
@media (min-width: 640px) {
  .tools-popular {
    grid-template-columns: 1fr 1fr;
  }
  .tools-cat-grid {
    grid-template-columns: 1fr 1fr;
  }
}
@media (min-width: 900px) {
  .tools-cat-grid {
    grid-template-columns: 1fr 1fr 1fr;
  }
}

.tools-link {
  display: block;
  text-decoration: none;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.9rem 1rem;
  box-shadow: var(--shadow-sm);
}
.tools-link:hover,
.tools-link:focus {
  border-color: rgba(232, 93, 4, 0.35);
  box-shadow: var(--shadow);
}
.tools-link strong {
  display: block;
  font-size: 0.98rem;
  margin-bottom: 0.2rem;
}
.tools-link span {
  display: block;
  color: var(--ink-soft);
  font-size: 0.86rem;
  line-height: 1.45;
}
.tools-link__meta {
  margin-top: 0.35rem;
  font-size: 0.78rem;
  color: var(--muted);
}

.calc-stack {
  display: grid;
  gap: 1rem;
  margin: 1.25rem 0;
}
.calc-stack > [id^="calc-"] {
  scroll-margin-top: 5rem;
}
.calc-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1rem 1rem 1.1rem;
  box-shadow: var(--shadow-sm);
}
.calc-card__title {
  margin: 0 0 0.4rem;
  font-size: 1.05rem;
}
.calc-card__formula {
  margin: 0 0 0.85rem;
  font-size: 0.86rem;
  color: var(--ink-soft);
  background: var(--cream);
  border-radius: 8px;
  padding: 0.55rem 0.7rem;
}
.calc-form {
  display: grid;
  gap: 0.75rem;
}
.calc-field__label {
  display: block;
  font-weight: 700;
  font-size: 0.88rem;
  margin-bottom: 0.3rem;
}
.calc-field__input {
  width: 100%;
  font: inherit;
  font-size: 1.15rem;
  font-variant-numeric: tabular-nums;
  padding: 0.85rem 0.9rem;
  border: 1.5px solid var(--line);
  border-radius: 10px;
  background: #fff;
}
.calc-field__input:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}
.calc-field__hint {
  display: block;
  margin-top: 0.25rem;
  font-size: 0.78rem;
  color: var(--muted);
}
.calc-actions {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.5rem;
  margin-top: 0.25rem;
}
@media (min-width: 520px) {
  .calc-actions {
    grid-template-columns: 1.2fr 1fr 1fr;
  }
}
.btn--ghost {
  background: #fff;
  color: var(--ink);
  border-color: var(--line);
  box-shadow: none;
}
.btn--ghost:hover {
  background: var(--cream);
  color: var(--ink);
  transform: none;
}
.calc-btn {
  width: 100%;
  min-height: 48px;
  cursor: pointer;
}
.calc-btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}
.calc-out {
  margin-top: 0.9rem;
  padding-top: 0.85rem;
  border-top: 1px solid var(--line);
}
.calc-results {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.55rem;
}
.calc-results__item {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.75rem;
  background: var(--accent-soft);
  border-radius: 10px;
  padding: 0.7rem 0.85rem;
}
.calc-results__label {
  font-size: 0.88rem;
  color: var(--ink-soft);
}
.calc-results__value {
  font-weight: 900;
  font-size: 1.05rem;
  font-variant-numeric: tabular-nums;
  text-align: right;
}
.calc-error {
  margin: 0;
  color: #b42318;
  font-weight: 700;
  font-size: 0.92rem;
}
.calc-note {
  margin: 0.65rem 0 0;
  font-size: 0.82rem;
  color: var(--muted);
}

.tools-prose h2 {
  margin: 1.6rem 0 0.55rem;
  font-size: 1.15rem;
}
.tools-prose h3 {
  margin: 1.2rem 0 0.4rem;
  font-size: 1.02rem;
}
.tools-prose p,
.tools-prose li {
  color: var(--ink-soft);
  font-size: 0.95rem;
}
.tools-prose ul {
  padding-left: 1.2rem;
}
.tools-related {
  display: grid;
  gap: 0.5rem;
  margin: 0.75rem 0 0;
  padding: 0;
  list-style: none;
}
.tools-cta {
  margin: 1.5rem 0 0;
  padding: 1.1rem;
  border-radius: 14px;
  background: linear-gradient(135deg, #fff7f0, #fff);
  border: 1px solid rgba(232, 93, 4, 0.2);
}
.tools-cta p {
  margin: 0 0 0.75rem;
  color: var(--ink-soft);
  font-size: 0.92rem;
}
.tools-toc {
  display: block;
  margin: 0.9rem 0 0.25rem;
  padding: 0.85rem 0.9rem;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
}
.tools-toc__label {
  margin: 0 0 0.55rem;
  font-size: 0.82rem;
  font-weight: 800;
  color: var(--ink-soft);
}
.tools-toc__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}
.tools-toc a {
  text-decoration: none;
  font-size: 0.84rem;
  font-weight: 700;
  padding: 0.45rem 0.7rem;
  border-radius: 999px;
  background: var(--cream);
  border: 1px solid var(--line);
  color: var(--ink);
}
.tools-toc a:hover {
  border-color: var(--accent);
  color: var(--accent-deep);
  background: #fff;
}