/* ==========================================================================
   koi-labo (恋ラボ・仮称) — prototype stylesheet
   静的HTMLプロトタイプ用。外部CDN・外部フォント一切不使用。
   ========================================================================== */

:root {
  /* Light theme (default) */
  --color-bg: #FAF6F2;
  --color-bg-alt: #F3EAE4;
  --color-bg-card: #FFFFFF;
  --color-text: #2E2A28;
  --color-text-muted: #6B615D;
  --color-border: #E7DAD3;
  --color-accent: #B4637A;
  --color-accent-dark: #8F4A5E;
  --color-accent-soft: #F1DEE3;
  --color-header-bg: rgba(250, 246, 242, 0.92);
  --color-link: #B4637A;
  --color-shadow: rgba(46, 42, 40, 0.08);
  --color-overlay-start: rgba(250, 246, 242, 0.92);
  --color-overlay-mid: rgba(250, 246, 242, 0.74);
  --color-overlay-end: rgba(250, 246, 242, 0);

  --font-serif: "Hiragino Mincho ProN", "HiraMinProN-W3", "游明朝", "Yu Mincho", serif;
  --font-sans: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "游ゴシック", "Yu Gothic", sans-serif;

  --content-width: 680px;
  --wide-width: 1080px;
  --radius-s: 6px;
  --radius-m: 14px;
  --radius-l: 22px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #201A1C;
    --color-bg-alt: #2B2325;
    --color-bg-card: #292223;
    --color-text: #F2E9E4;
    --color-text-muted: #C9BAB4;
    --color-border: #3C3133;
    --color-accent: #E08CA0;
    --color-accent-dark: #F0AFBE;
    --color-accent-soft: #3E2B31;
    --color-header-bg: rgba(32, 26, 28, 0.92);
    --color-link: #E08CA0;
    --color-shadow: rgba(0, 0, 0, 0.35);
    --color-overlay-start: rgba(32, 26, 28, 0.90);
    --color-overlay-mid: rgba(32, 26, 28, 0.72);
    --color-overlay-end: rgba(32, 26, 28, 0);
  }
}

/* ---- Reset ---- */
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body, h1, h2, h3, h4, p, ul, ol, dl, dd, figure, table, th, td {
  margin: 0;
  padding: 0;
}
img { max-width: 100%; display: block; }
a { color: var(--color-link); text-decoration: none; }
a:hover { text-decoration: underline; }
ul, ol { list-style: none; }
table { border-collapse: collapse; width: 100%; }

body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  line-height: 1.9;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-family: var(--font-serif);
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.55;
}

.container {
  width: 100%;
  max-width: var(--wide-width);
  margin: 0 auto;
  padding: 0 20px;
}

/* ---- Header ---- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-header-bg);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--color-border);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 20px;
  max-width: var(--wide-width);
  margin: 0 auto;
}

.logo {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--color-text);
  white-space: nowrap;
}

.logo span {
  color: var(--color-accent);
}

.nav-cats {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

.nav-cats::-webkit-scrollbar { display: none; }

.nav-cats a {
  display: inline-block;
  white-space: nowrap;
  font-size: 0.86rem;
  color: var(--color-text-muted);
  padding: 8px 12px;
  border-radius: 999px;
  transition: background 0.15s ease, color 0.15s ease;
}

.nav-cats a:hover,
.nav-cats a.is-active {
  background: var(--color-accent-soft);
  color: var(--color-accent-dark);
  text-decoration: none;
}

/* ---- Hero ---- */
.hero {
  padding: 56px 20px 44px;
  text-align: center;
  background: linear-gradient(180deg, var(--color-bg-alt) 0%, var(--color-bg) 100%);
  border-bottom: 1px solid var(--color-border);
}

.hero__eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  color: var(--color-accent-dark);
  background: var(--color-accent-soft);
  padding: 5px 14px;
  border-radius: 999px;
  margin-bottom: 18px;
}

.hero h1 {
  font-size: clamp(1.6rem, 4.5vw, 2.4rem);
  max-width: 760px;
  margin: 0 auto 14px;
}

.hero p {
  color: var(--color-text-muted);
  max-width: 520px;
  margin: 0 auto;
  font-size: 0.98rem;
}

/* ---- Sections ---- */
.section {
  padding: 48px 20px;
  max-width: var(--wide-width);
  margin: 0 auto;
}

.section-title {
  font-size: 1.4rem;
  margin-bottom: 24px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--color-accent-soft);
  display: inline-block;
}

.section-lead {
  color: var(--color-text-muted);
  margin-bottom: 28px;
  max-width: var(--content-width);
}

/* ---- Category cards ---- */
.cat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
}

.cat-card {
  display: block;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-m);
  padding: 22px 20px;
  box-shadow: 0 2px 10px var(--color-shadow);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.cat-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 20px var(--color-shadow);
  text-decoration: none;
}

.cat-card__icon {
  font-size: 1.6rem;
  margin-bottom: 10px;
}

.cat-card__title {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  color: var(--color-text);
  margin-bottom: 6px;
}

.cat-card__desc {
  font-size: 0.86rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* ---- Article list ---- */
.article-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  max-width: var(--content-width);
}

.article-row {
  display: block;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-m);
  padding: 18px 20px;
  transition: box-shadow 0.15s ease;
}

.article-row:hover {
  box-shadow: 0 6px 16px var(--color-shadow);
  text-decoration: none;
}

.article-row__tag {
  display: inline-block;
  font-size: 0.72rem;
  color: var(--color-accent-dark);
  background: var(--color-accent-soft);
  padding: 3px 10px;
  border-radius: 999px;
  margin-bottom: 8px;
}

.article-row__title {
  font-family: var(--font-serif);
  font-size: 1.02rem;
  color: var(--color-text);
  line-height: 1.6;
  margin-bottom: 6px;
}

.article-row__excerpt {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.article-row.is-placeholder {
  opacity: 0.55;
  cursor: default;
}

.article-row.is-placeholder:hover {
  box-shadow: none;
}

.placeholder-badge {
  font-size: 0.72rem;
  color: var(--color-text-muted);
  border: 1px dashed var(--color-border);
  padding: 3px 10px;
  border-radius: 999px;
  display: inline-block;
  margin-bottom: 8px;
}

/* ---- CTA band ---- */
.cta-band {
  background: var(--color-accent);
  color: #FFF5F7;
  border-radius: var(--radius-l);
  padding: 36px 28px;
  text-align: center;
  max-width: var(--wide-width);
  margin: 0 auto 48px;
}

.cta-band h2 {
  color: #FFF5F7;
  font-size: 1.3rem;
  margin-bottom: 10px;
}

.cta-band p {
  font-size: 0.9rem;
  opacity: 0.92;
  margin-bottom: 20px;
}

.btn {
  display: inline-block;
  background: #FFFFFF;
  color: var(--color-accent-dark);
  font-weight: 600;
  padding: 12px 28px;
  border-radius: 999px;
  font-size: 0.94rem;
  transition: transform 0.15s ease;
}

.btn:hover {
  transform: translateY(-2px);
  text-decoration: none;
}

.btn-outline {
  display: inline-block;
  background: transparent;
  color: var(--color-accent-dark);
  border: 1.5px solid var(--color-accent);
  font-weight: 600;
  padding: 10px 26px;
  border-radius: 999px;
  font-size: 0.9rem;
}

.cta-note {
  font-size: 0.72rem;
  opacity: 0.8;
  margin-top: 14px;
}

/* ---- Article page ---- */
.article-header {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 40px 20px 24px;
}

.breadcrumb {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  margin-bottom: 18px;
}

.breadcrumb a { color: var(--color-text-muted); }
.breadcrumb a:hover { color: var(--color-accent); }

.article-header__tag {
  display: inline-block;
  font-size: 0.75rem;
  color: var(--color-accent-dark);
  background: var(--color-accent-soft);
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 14px;
}

.article-header h1 {
  font-size: clamp(1.5rem, 4vw, 2rem);
  margin-bottom: 14px;
}

.article-meta {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.article-header__eyecatch {
  position: relative;
  margin-top: 22px;
  border-radius: var(--radius-l);
  overflow: hidden;
  box-shadow: 0 8px 24px var(--color-shadow);
}

.article-header__eyecatch img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

/* Title overlay banner on eyecatch (left = text space, right = character) */
.eyecatch-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  padding: 22px 20px;
}

.eyecatch-overlay__text {
  display: inline-block;
  max-width: 62%;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(1.05rem, 3.4vw, 1.5rem);
  line-height: 1.55;
  color: var(--color-accent-dark);
  background: linear-gradient(90deg, var(--color-overlay-start) 0%, var(--color-overlay-mid) 72%, var(--color-overlay-end) 100%);
  padding: 14px 20px 14px 4px;
  border-radius: var(--radius-s);
}

.article-body {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 20px 60px;
  font-size: 1.02rem;
}

.article-body p {
  margin-bottom: 1.6em;
  color: var(--color-text);
}

.article-body h2 {
  font-size: 1.28rem;
  margin: 2.2em 0 0.9em;
  padding-top: 0.2em;
}

.article-body h3 {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--color-accent-dark);
  margin: 1.8em 0 0.7em;
}

.article-body ul,
.article-body ol {
  margin: 0 0 1.6em;
  padding-left: 0;
}

.article-body ul li,
.article-body ol li {
  position: relative;
  padding-left: 1.4em;
  margin-bottom: 0.7em;
  color: var(--color-text);
}

.article-body ul li::before {
  content: "";
  position: absolute;
  left: 0.2em;
  top: 0.75em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent);
}

.article-body ol {
  counter-reset: koi-list;
}

.article-body ol li {
  counter-increment: koi-list;
}

.article-body ol li::before {
  content: counter(koi-list);
  position: absolute;
  left: 0;
  top: 0;
  width: 1.5em;
  height: 1.5em;
  line-height: 1.5em;
  text-align: center;
  font-size: 0.72rem;
  font-weight: 700;
  color: #fff;
  background: var(--color-accent);
  border-radius: 50%;
}

.article-body strong { color: var(--color-accent-dark); }

/* Inline article photos (Pexels) */
.article-body figure.article-photo {
  margin: 2.4em 0;
}

.article-body figure.article-photo img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 420px;
  object-fit: cover;
  border-radius: var(--radius-m);
}

.article-body figure.article-photo figcaption {
  margin-top: 8px;
  font-size: 0.74rem;
  color: var(--color-text-muted);
  text-align: right;
}

.article-body figure.article-photo figcaption a {
  color: var(--color-text-muted);
  text-decoration: underline;
}

.article-body figure.article-photo figcaption a:hover {
  color: var(--color-accent);
}

/* TOC */
.toc {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-m);
  padding: 20px 22px;
  margin: 28px 0 2em;
}

.toc__title {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  margin-bottom: 10px;
  color: var(--color-accent-dark);
}

.toc ol {
  padding-left: 0;
  counter-reset: toc-list;
}

.toc ol li {
  counter-increment: toc-list;
  font-size: 0.88rem;
  padding-left: 1.6em;
  margin-bottom: 0.5em;
}

.toc ol li::before {
  content: counter(toc-list) ".";
  position: absolute;
  left: 0;
  width: 1.4em;
  background: none;
  color: var(--color-accent);
  font-weight: 700;
  font-size: 0.85rem;
}

.toc a { color: var(--color-text); }
.toc a:hover { color: var(--color-accent); }

/* Comparison table */
.table-wrap {
  overflow-x: auto;
  margin: 1.8em 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-m);
}

.compare-table {
  min-width: 560px;
  font-size: 0.86rem;
}

.compare-table th,
.compare-table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--color-border);
  text-align: left;
  vertical-align: top;
}

.compare-table thead th {
  background: var(--color-bg-alt);
  font-family: var(--font-serif);
  color: var(--color-accent-dark);
  white-space: nowrap;
}

.compare-table tbody tr:last-child td { border-bottom: none; }
.compare-table tbody tr:hover { background: var(--color-bg-alt); }

/* Quicklook summary table (結論早見表・ガチとら方式) */
.quicklook {
  margin: 28px 0 2em;
}

.quicklook__title {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-accent-dark);
  margin-bottom: 10px;
}

.quicklook-table tbody tr:nth-child(even) td {
  background: var(--color-bg-alt);
}

.quicklook-table tbody tr:hover td {
  background: var(--color-accent-soft);
}

/* Editor-voice speech bubble (編集部キャラの吹き出し) */
.editor-voice {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin: 2em 0;
}

.editor-voice__avatar {
  flex-shrink: 0;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  overflow: hidden;
  background: var(--color-accent-soft);
  border: 2px solid var(--color-accent-soft);
}

.editor-voice__avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.editor-voice__bubble {
  position: relative;
  flex: 1;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-m);
  padding: 14px 18px;
  box-shadow: 0 2px 8px var(--color-shadow);
}

.editor-voice__bubble::before {
  content: "";
  position: absolute;
  left: -6px;
  top: 16px;
  width: 12px;
  height: 12px;
  background: var(--color-bg-card);
  border-left: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  transform: rotate(45deg);
}

.editor-voice__label {
  display: block;
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--color-accent-dark);
  letter-spacing: 0.04em;
  margin-bottom: 4px;
}

.editor-voice__bubble p {
  font-size: 0.9rem;
  color: var(--color-text);
  margin-bottom: 0;
}

@media (max-width: 640px) {
  .editor-voice__avatar { width: 44px; height: 44px; }
  .eyecatch-overlay__text { max-width: 72%; font-size: clamp(0.94rem, 4.6vw, 1.2rem); padding: 10px 14px 10px 4px; }
}

/* FAQ */
.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-m);
  margin-bottom: 12px;
  overflow: hidden;
  background: var(--color-bg-card);
}

.faq-item summary {
  cursor: pointer;
  padding: 16px 18px;
  font-weight: 600;
  font-size: 0.94rem;
  list-style: none;
  display: flex;
  gap: 10px;
  align-items: baseline;
}

.faq-item summary::-webkit-details-marker { display: none; }

.faq-item summary::before {
  content: "Q";
  color: #fff;
  background: var(--color-accent);
  font-size: 0.72rem;
  font-weight: 700;
  width: 1.6em;
  height: 1.6em;
  line-height: 1.6em;
  text-align: center;
  border-radius: 50%;
  flex-shrink: 0;
}

.faq-item .faq-answer {
  padding: 0 18px 18px 18px;
  font-size: 0.9rem;
  color: var(--color-text-muted);
  padding-left: 3.2em;
}

/* In-article CTA block */
.inline-cta {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-accent-soft);
  border-left: 4px solid var(--color-accent);
  border-radius: var(--radius-m);
  padding: 22px 22px;
  margin: 2em 0;
}

.inline-cta__label {
  font-size: 0.72rem;
  color: var(--color-accent-dark);
  font-weight: 700;
  letter-spacing: 0.06em;
  margin-bottom: 8px;
  display: block;
}

.inline-cta h4 {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  margin-bottom: 8px;
}

.inline-cta p {
  font-size: 0.88rem;
  color: var(--color-text-muted);
  margin-bottom: 14px;
}

.disclosure-note {
  font-size: 0.76rem;
  color: var(--color-text-muted);
  border-top: 1px dashed var(--color-border);
  margin-top: 2.4em;
  padding-top: 1em;
}

.af-link {
  color: var(--color-accent-dark);
  font-weight: 600;
  border-bottom: 1px dashed var(--color-accent);
}

/* Article footer nav */
.article-footer-nav {
  max-width: var(--content-width);
  margin: 0 auto 60px;
  padding: 0 20px;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

/* ---- Static pages (about / privacy / contact) ---- */
.static-page {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 48px 20px 70px;
}

.static-page h1 {
  font-size: 1.6rem;
  margin-bottom: 8px;
}

.static-page .page-lead {
  color: var(--color-text-muted);
  margin-bottom: 2em;
  font-size: 0.92rem;
}

.static-page h2 {
  font-size: 1.1rem;
  margin: 1.8em 0 0.7em;
}

.static-page p {
  margin-bottom: 1.3em;
}

.static-page dl {
  border-top: 1px solid var(--color-border);
  margin-bottom: 2em;
}

.static-page dl > div {
  display: flex;
  gap: 20px;
  padding: 14px 0;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.92rem;
}

.static-page dt {
  width: 8.5em;
  flex-shrink: 0;
  color: var(--color-text-muted);
}

.static-page ul {
  margin-bottom: 1.5em;
}

.static-page ul li {
  position: relative;
  padding-left: 1.3em;
  margin-bottom: 0.6em;
  font-size: 0.94rem;
}

.static-page ul li::before {
  content: "";
  position: absolute;
  left: 0.2em;
  top: 0.7em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--color-accent);
}

.contact-form-stub {
  background: var(--color-bg-alt);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-m);
  padding: 26px;
  text-align: center;
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

/* ---- Footer ---- */
.site-footer {
  border-top: 1px solid var(--color-border);
  background: var(--color-bg-alt);
  padding: 40px 20px 24px;
  margin-top: 20px;
}

.footer-inner {
  max-width: var(--wide-width);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

.footer-links a {
  font-size: 0.84rem;
  color: var(--color-text-muted);
}

.footer-links a:hover { color: var(--color-accent); }

.footer-brand {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  color: var(--color-text);
}

.footer-copy {
  font-size: 0.78rem;
  color: var(--color-text-muted);
}

.footer-preview-note {
  font-size: 0.7rem;
  color: var(--color-text-muted);
  opacity: 0.75;
  border-top: 1px dashed var(--color-border);
  padding-top: 14px;
}

/* ==========================================================================
   Redesign additions — Pick Up / Concept / Profile / Category sections /
   3-col article cards / 2-column article layout with sidebar / related card
   ========================================================================== */

/* ---- Pick Up section (category cards, image + eyebrow(EN) + desc(JA)) ---- */
.pickup-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 18px;
}

.pickup-card {
  display: block;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-m);
  overflow: hidden;
  box-shadow: 0 2px 10px var(--color-shadow);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.pickup-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 22px var(--color-shadow);
  text-decoration: none;
}

.pickup-card__img {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--color-accent-soft);
}

.pickup-card__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.pickup-card__body {
  padding: 16px 18px 20px;
}

.pickup-card__eyebrow {
  display: block;
  font-family: var(--font-serif);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--color-accent);
  margin-bottom: 6px;
  text-transform: uppercase;
}

.pickup-card__title {
  font-family: var(--font-serif);
  font-size: 1.02rem;
  color: var(--color-text);
  margin-bottom: 6px;
}

.pickup-card__desc {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* ---- Concept section (eyecatch image + catchcopy + story) ---- */
.concept {
  background: var(--color-bg-alt);
}

.concept-grid {
  display: grid;
  grid-template-columns: minmax(0, 420px) 1fr;
  gap: 40px;
  align-items: center;
  max-width: var(--wide-width);
  margin: 0 auto;
  padding: 8px 20px;
}

.concept-img {
  border-radius: var(--radius-l);
  overflow: hidden;
  box-shadow: 0 8px 24px var(--color-shadow);
}

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

.concept-eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  color: var(--color-accent-dark);
  background: var(--color-accent-soft);
  padding: 5px 14px;
  border-radius: 999px;
  margin-bottom: 16px;
}

.concept-heading {
  font-size: clamp(1.3rem, 3vw, 1.7rem);
  margin-bottom: 16px;
}

.concept-text {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.95;
}

.concept-text + .concept-text {
  margin-top: 1em;
}

/* ---- Profile card ---- */
.profile-card {
  display: flex;
  align-items: center;
  gap: 26px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-l);
  padding: 30px 32px;
  max-width: var(--wide-width);
  margin: 0 auto;
  box-shadow: 0 2px 10px var(--color-shadow);
}

.profile-card__avatar {
  flex-shrink: 0;
  width: 108px;
  height: 108px;
  border-radius: 50%;
  overflow: hidden;
  border: 3px solid var(--color-accent-soft);
}

.profile-card__avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.profile-card__name {
  font-family: var(--font-serif);
  font-size: 1.12rem;
  color: var(--color-text);
  margin-bottom: 8px;
}

.profile-card__bio {
  font-size: 0.86rem;
  color: var(--color-text-muted);
  margin-bottom: 12px;
  line-height: 1.8;
}

.profile-card__sns {
  display: flex;
  gap: 10px;
}

.profile-card__sns a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--color-accent-soft);
  color: var(--color-accent-dark);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.profile-card__sns a:hover {
  background: var(--color-accent);
  color: #fff;
  text-decoration: none;
}

/* ---- Category divider (icon + eyebrow + heading, used between article sections) ---- */
.cat-divider {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 24px;
}

.cat-divider__icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-accent-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}

.cat-divider__text {
  flex-shrink: 0;
}

.cat-divider__eyebrow {
  display: block;
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  text-transform: uppercase;
  margin-bottom: 2px;
}

.cat-divider__heading {
  font-size: 1.25rem;
}

.cat-divider__line {
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--color-border) 0%, transparent 100%);
}

.cat-divider__more {
  flex-shrink: 0;
  font-size: 0.78rem;
  color: var(--color-text-muted);
}

.cat-divider__more:hover { color: var(--color-accent); }

.cat-section {
  margin-bottom: 52px;
}

.cat-section:last-child {
  margin-bottom: 0;
}

/* ---- Article cards (3-col, image top) ---- */
.article-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 20px;
  max-width: var(--wide-width);
}

.article-card {
  display: block;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-m);
  overflow: hidden;
  box-shadow: 0 2px 10px var(--color-shadow);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.article-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 20px var(--color-shadow);
  text-decoration: none;
}

.article-card__img {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--color-accent-soft);
}

.article-card__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.article-card__body {
  padding: 16px 18px 20px;
}

.article-card__tag {
  display: inline-block;
  font-size: 0.72rem;
  color: var(--color-accent-dark);
  background: var(--color-accent-soft);
  padding: 3px 10px;
  border-radius: 999px;
  margin-bottom: 10px;
}

.article-card__title {
  font-family: var(--font-serif);
  font-size: 0.98rem;
  color: var(--color-text);
  line-height: 1.6;
  margin-bottom: 8px;
}

.article-card__excerpt {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* ---- Article body H2 diamond decoration ---- */
.article-body h2 {
  display: flex;
  align-items: center;
  gap: 0.5em;
  border-bottom: 2px solid var(--color-accent-soft);
  padding-bottom: 0.5em;
}

.article-body h2::before {
  content: "\25C6";
  color: var(--color-accent);
  font-size: 0.62em;
  flex-shrink: 0;
}

/* ---- 2-column article layout with sidebar ---- */
.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 44px;
  max-width: var(--wide-width);
  margin: 0 auto;
  align-items: start;
}

.article-layout .article-header,
.article-layout .article-body {
  margin: 0;
  padding-left: 0;
  padding-right: 0;
}

.sidebar {
  display: flex;
  flex-direction: column;
  gap: 22px;
  padding: 40px 20px 60px 0;
  position: sticky;
  top: 82px;
}

.sidebar-box {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-m);
  padding: 20px;
}

.sidebar-box__title {
  display: flex;
  align-items: center;
  gap: 0.4em;
  font-family: var(--font-serif);
  font-size: 0.92rem;
  color: var(--color-text);
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--color-border);
}

.sidebar-box__title::before {
  content: "\25C6";
  color: var(--color-accent);
  font-size: 0.6em;
}

/* search box (decorative only, no functionality) */
.sidebar-search {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 10px 16px;
}

.sidebar-search__icon {
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

.sidebar-search input {
  border: none;
  background: transparent;
  outline: none;
  font-size: 0.84rem;
  color: var(--color-text);
  width: 100%;
  font-family: var(--font-sans);
}

.sidebar-search input::placeholder {
  color: var(--color-text-muted);
}

/* profile mini card */
.sidebar-profile {
  text-align: center;
}

.sidebar-profile__avatar {
  width: 68px;
  height: 68px;
  border-radius: 50%;
  overflow: hidden;
  margin: 0 auto 12px;
  border: 3px solid var(--color-accent-soft);
}

.sidebar-profile__avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.sidebar-profile__name {
  font-family: var(--font-serif);
  font-size: 0.96rem;
  margin-bottom: 8px;
}

.sidebar-profile__bio {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  line-height: 1.8;
}

/* popular articles list */
.sidebar-popular__item {
  display: flex;
  gap: 12px;
  align-items: center;
}

.sidebar-popular__item + .sidebar-popular__item {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px dashed var(--color-border);
}

.sidebar-popular__thumb {
  flex-shrink: 0;
  width: 56px;
  height: 56px;
  border-radius: var(--radius-s);
  overflow: hidden;
  background: var(--color-accent-soft);
}

.sidebar-popular__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.sidebar-popular__title {
  font-size: 0.8rem;
  line-height: 1.6;
  color: var(--color-text);
}

.sidebar-popular__title:hover { color: var(--color-accent); }

/* category list */
.sidebar-categories li + li { margin-top: 2px; }

.sidebar-categories a {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 9px 4px;
  font-size: 0.86rem;
  color: var(--color-text);
  border-bottom: 1px dashed var(--color-border);
}

.sidebar-categories li:last-child a { border-bottom: none; }

.sidebar-categories a:hover { color: var(--color-accent); text-decoration: none; }

.sidebar-categories a::after {
  content: "\203A";
  color: var(--color-text-muted);
}

/* tag cloud */
.sidebar-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.sidebar-tags a {
  font-size: 0.76rem;
  color: var(--color-accent-dark);
  background: var(--color-accent-soft);
  padding: 5px 12px;
  border-radius: 999px;
}

.sidebar-tags a:hover {
  background: var(--color-accent);
  color: #fff;
  text-decoration: none;
}

/* LINE banner (dummy) */
.sidebar-line-banner {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: #FFF5F7;
  text-align: center;
  padding: 22px 18px;
}

.sidebar-line-banner p {
  font-size: 0.82rem;
  margin-bottom: 14px;
  opacity: 0.95;
}

.sidebar-line-banner .btn {
  width: 100%;
  padding: 10px 12px;
  font-size: 0.84rem;
}

.sidebar-line-banner .cta-note {
  margin-top: 10px;
  font-size: 0.68rem;
}

/* ---- Related article card ("合わせて読みたい") ---- */
.related-card {
  display: flex;
  align-items: stretch;
  gap: 0;
  background: var(--color-bg-card);
  border: 1.5px solid var(--color-accent-soft);
  border-radius: var(--radius-m);
  overflow: hidden;
  margin: 2em 0;
  position: relative;
  transition: box-shadow 0.15s ease, border-color 0.15s ease;
}

.related-card:hover {
  border-color: var(--color-accent);
  box-shadow: 0 8px 18px var(--color-shadow);
  text-decoration: none;
}

.related-card__ribbon {
  position: absolute;
  top: 10px;
  left: -34px;
  transform: rotate(-45deg);
  background: var(--color-accent);
  color: #fff;
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  padding: 3px 40px;
  box-shadow: 0 2px 6px var(--color-shadow);
}

.related-card__thumb {
  flex-shrink: 0;
  width: 130px;
  background: var(--color-accent-soft);
}

.related-card__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.related-card__body {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 16px 18px 16px 46px;
}

.related-card__title {
  font-family: var(--font-serif);
  font-size: 0.92rem;
  color: var(--color-text);
  line-height: 1.6;
}

.related-card__arrow {
  flex-shrink: 0;
  color: var(--color-accent);
  font-size: 1.1rem;
}

/* ---- Responsive ---- */
@media (max-width: 900px) {
  .concept-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .concept-img { max-width: 340px; margin: 0 auto; }

  .profile-card {
    flex-direction: column;
    text-align: center;
    padding: 26px 22px;
  }
  .profile-card__sns { justify-content: center; }

  .article-layout {
    grid-template-columns: 1fr;
  }
  .sidebar {
    position: static;
    padding: 0 20px 8px;
  }
}

@media (max-width: 640px) {
  .site-header__inner {
    flex-wrap: nowrap;
  }
  .logo { font-size: 1.1rem; }
  .hero { padding: 44px 16px 34px; }
  .section { padding: 36px 16px; }
  .cta-band { padding: 30px 20px; margin-bottom: 36px; }
  .article-header, .article-body, .static-page { padding-left: 16px; padding-right: 16px; }
  .related-card { flex-direction: column; }
  .related-card__thumb { width: 100%; height: 140px; }
  .related-card__body { padding: 14px 16px; }
  .related-card__ribbon { left: -36px; top: 12px; }
  .cat-divider { flex-wrap: wrap; }
  .cat-divider__line { order: 3; width: 100%; }
}