/* 推し暮らし — 使い方の記事（/guide/）共通スタイル
   LP（index.html）のデザイントークンをそのまま流用する。
   ここを直したら記事を作り直す必要はない（CSS は 1 本の外部ファイル）。 */

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --primary: #FF6B81;
  --primary-dark: #ef4f68;
  --primary-light: #fff1f3;
  --whale: #A9C7E8;
  --whale-soft: #eef4fb;
  --whale-deep: #6E9BD1;
  --ink: #453a44;
  --ink-2: #5d5059;
  --muted: #97878f;
  --border: #f3e3e7;
  --bg: #FDF9F6;
  --card: #ffffff;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Zen Maru Gothic', -apple-system, "Hiragino Maru Gothic ProN", "Hiragino Sans", "Noto Sans JP", sans-serif;
  font-weight: 500;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* ── 共通の幅 ── */
.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 24px;
}

/* 本文は読みやすさ優先で LP より狭く取る */
.narrow {
  max-width: 680px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ── HEADER（LP と同じ見た目） ── */
header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(253, 249, 246, 0.94);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  height: 58px;
  display: flex;
  align-items: center;
}

header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: inherit;
}

.logo-mark {
  width: 32px;
  height: 32px;
  border-radius: 10px;
  overflow: hidden;
  flex-shrink: 0;
  border: 1px solid var(--border);
  background: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
}

.logo-mark img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.logo-mark-fallback {
  font-size: 15px;
  font-weight: 900;
  color: var(--primary);
}

.logo-name {
  font-size: 16px;
  font-weight: 900;
  letter-spacing: .2px;
}

.logo-suffix {
  font-size: 13px;
  font-weight: 700;
  color: var(--muted);
  letter-spacing: .2px;
}

/* ── BUTTONS（LP と同じ） ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--primary);
  color: #fff;
  font-family: inherit;
  font-size: 15px;
  font-weight: 900;
  letter-spacing: .5px;
  padding: 15px 34px;
  border-radius: 999px;
  text-decoration: none;
  border: none;
  box-shadow: 0 6px 18px rgba(255, 107, 129, .32);
  transition: opacity .18s ease, transform .18s ease, box-shadow .18s ease;
}

.btn:hover {
  opacity: .92;
  transform: translateY(-2px);
  box-shadow: 0 10px 22px rgba(255, 107, 129, .38);
}

.btn::before {
  content: '♥';
  font-size: 13px;
  transform: translateY(-1px);
}

.btn-sm {
  font-size: 13px;
  padding: 9px 18px;
  box-shadow: 0 3px 10px rgba(255, 107, 129, .28);
}

.btn-sm::before {
  content: none;
}

/* ── パンくず ── */
.crumbs {
  font-size: 12.5px;
  color: var(--muted);
  padding: 26px 0 0;
}

.crumbs a {
  color: var(--muted);
  text-decoration: none;
}

.crumbs a:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.crumbs .sep {
  margin: 0 7px;
  opacity: .6;
}

/* ── 記事のヘッダ ── */
.article-head {
  padding: 18px 0 30px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 34px;
}

.tag {
  display: inline-block;
  background: var(--primary-light);
  color: var(--primary-dark);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: .4px;
  padding: 5px 13px;
  border-radius: 999px;
}

.article-head h1 {
  font-size: 30px;
  font-weight: 900;
  line-height: 1.5;
  letter-spacing: .2px;
  margin: 14px 0 0;
}

.article-head .summary {
  font-size: 15px;
  color: var(--ink-2);
  line-height: 1.85;
  margin-top: 12px;
}

.dates {
  font-size: 12.5px;
  color: var(--muted);
  margin-top: 16px;
}

/* ── 本文 ── */
.prose {
  font-size: 16px;
  line-height: 1.95;
  color: var(--ink-2);
  padding-bottom: 20px;
}

.prose h2 {
  font-size: 21px;
  font-weight: 900;
  color: var(--ink);
  line-height: 1.6;
  margin: 52px 0 16px;
  padding-left: 14px;
  border-left: 4px solid var(--primary);
}

.prose h3 {
  font-size: 17px;
  font-weight: 900;
  color: var(--ink);
  line-height: 1.7;
  margin: 34px 0 12px;
}

.prose p {
  margin: 0 0 20px;
}

.prose a {
  color: var(--primary-dark);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1.5px;
}

.prose strong {
  font-weight: 900;
  color: var(--ink);
}

.prose code {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: .88em;
  background: var(--primary-light);
  color: var(--primary-dark);
  padding: 2px 7px;
  border-radius: 6px;
}

.prose ul,
.prose ol {
  margin: 0 0 22px;
  padding-left: 1.4em;
}

.prose li {
  margin-bottom: 9px;
}

.prose li::marker {
  color: var(--primary);
  font-weight: 900;
}

.prose pre {
  margin: 0 0 22px;
  padding: 16px 18px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.prose pre code {
  background: none;
  color: var(--ink);
  padding: 0;
  font-size: 14px;
  line-height: 1.85;
  white-space: pre;
}

.prose blockquote {
  margin: 0 0 22px;
  padding: 16px 20px;
  background: var(--whale-soft);
  border-radius: 14px;
  border-left: 4px solid var(--whale);
  font-size: 15px;
  color: var(--ink-2);
}

.prose blockquote p:last-child {
  margin-bottom: 0;
}

.prose hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 40px 0;
}

.prose figure {
  margin: 0 0 26px;
}

.prose img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: var(--card);
}

.prose figcaption {
  font-size: 12.5px;
  color: var(--muted);
  text-align: center;
  margin-top: 10px;
  line-height: 1.7;
}

.prose .table-wrap {
  overflow-x: auto;
  margin: 0 0 24px;
  -webkit-overflow-scrolling: touch;
}

.prose table {
  border-collapse: collapse;
  width: 100%;
  min-width: 380px;
  font-size: 14.5px;
  background: var(--card);
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid var(--border);
}

.prose th,
.prose td {
  padding: 11px 14px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}

.prose th {
  background: var(--primary-light);
  color: var(--ink);
  font-weight: 900;
  white-space: nowrap;
}

.prose tr:last-child td {
  border-bottom: none;
}

/* ── 記事末尾の CTA ── */
.article-cta {
  margin: 44px 0 0;
  padding: 30px 26px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 22px;
  text-align: center;
}

.article-cta h2 {
  font-size: 18px;
  font-weight: 900;
  color: var(--ink);
  line-height: 1.7;
  margin-bottom: 8px;
}

.article-cta p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.8;
  margin-bottom: 20px;
}

/* ── 関連記事 ── */
.related {
  margin: 44px 0 0;
}

.related h2 {
  font-size: 15px;
  font-weight: 900;
  color: var(--muted);
  letter-spacing: .6px;
  margin-bottom: 14px;
}

/* ── 記事カード（一覧・関連で共通） ── */
.cards {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.card {
  display: block;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 20px 22px;
  text-decoration: none;
  color: inherit;
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}

.card:hover {
  transform: translateY(-2px);
  border-color: var(--primary);
  box-shadow: 0 8px 20px rgba(255, 107, 129, .12);
}

.card h3 {
  font-size: 16.5px;
  font-weight: 900;
  color: var(--ink);
  line-height: 1.65;
}

.card p {
  font-size: 13.5px;
  color: var(--ink-2);
  line-height: 1.8;
  margin-top: 6px;
}

.card .card-date {
  display: block;
  font-size: 12px;
  color: var(--muted);
  margin-top: 10px;
}

/* ── 一覧のヒーロー ── */
.guide-hero {
  padding: 42px 0 30px;
  text-align: center;
  background:
    radial-gradient(560px 300px at 50% -10%, rgba(255, 107, 129, .12), transparent 70%),
    radial-gradient(420px 260px at 12% 46%, rgba(169, 199, 232, .24), transparent 70%);
}

.guide-hero .kujira {
  width: 108px;
  margin: 0 auto 14px;
  display: block;
  animation: float 4.6s ease-in-out infinite;
  -webkit-user-drag: none;
  user-select: none;
  pointer-events: none;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-9px); }
}

@media (prefers-reduced-motion: reduce) {
  .guide-hero .kujira { animation: none !important; }
}

.guide-hero h1 {
  font-size: 28px;
  font-weight: 900;
  line-height: 1.55;
  letter-spacing: .2px;
}

.guide-hero p {
  font-size: 14.5px;
  color: var(--ink-2);
  line-height: 1.9;
  margin-top: 12px;
}

/* ── 一覧の節 ── */
.section {
  margin-top: 44px;
}

.section-title {
  font-size: 15px;
  font-weight: 900;
  color: var(--primary-dark);
  letter-spacing: .6px;
  margin-bottom: 14px;
  padding-left: 12px;
  border-left: 4px solid var(--primary);
}

.empty {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.9;
  text-align: center;
  padding: 40px 0;
}

/* 英語ロケール向けの一言（日本語のみである旨） */
.lang-note {
  display: none;
  font-size: 12.5px;
  color: var(--muted);
  background: var(--whale-soft);
  border-radius: 12px;
  padding: 12px 16px;
  line-height: 1.8;
  margin-top: 22px;
  text-align: center;
}

/* ── FOOTER（LP と同じ） ── */
footer {
  text-align: center;
  padding: 0 24px 44px;
  margin-top: 64px;
  font-size: 12.5px;
  color: var(--muted);
  background: var(--bg);
}

.footer-kujira {
  width: 76px;
  margin: 26px auto 18px;
  display: block;
  opacity: .9;
  -webkit-user-drag: none;
  user-select: none;
  pointer-events: none;
}

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

footer a:hover {
  text-decoration: underline;
}

@media (max-width: 600px) {
  .article-head h1 {
    font-size: 24px;
  }

  .guide-hero h1 {
    font-size: 22px;
  }

  .prose {
    font-size: 15.5px;
  }

  .prose h2 {
    font-size: 19px;
    margin-top: 44px;
  }

  .article-cta {
    padding: 26px 20px;
  }
}