/* ============================================================
   SPIKE Inc. — common.css
   EB Garamond × Noto Serif JP × Noto Sans JP / Warm Stone × Charcoal × Sage
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=EB+Garamond:ital,wght@0,400;0,500;0,600;1,400;1,500&family=Noto+Sans+JP:wght@300;400;500;700&family=Noto+Serif+JP:wght@500;600&display=swap');

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

:root {
  --cream:      #FAF9F6;
  --bg:         #F5F3EF;
  --bg2:        #EAE7E0;
  --bg3:        #DDD9D0;
  --dark:       #1A1A18;
  --dark2:      #242420;
  --text:       #242420;
  --body:       #484840;
  --mid:        #787870;
  --light:      #A8A89A;
  --stone:      #C4BAB0;
  --border:     rgba(26,26,24,0.09);
  --border-md:  rgba(26,26,24,0.16);
  --green:      #3C5430;
  --green-h:    #2E4024;
  --green-bg:   #EBF0E5;
  --bronze:     #7A6248;
  --white:      #FFFFFF;
}

html { scroll-behavior: smooth; }
::selection { background: rgba(60,84,48,0.18); }
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--green);
  outline-offset: 2px;
}
body {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

/* ── CONTAINER ── */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 56px;
}
.container-wide {
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 56px;
}

/* ── HEADER ── */
#site-header {
  position: sticky;
  top: 0;
  z-index: 200;
  background: var(--white);
  border-bottom: 1px solid var(--border);
  height: 96px;
  transition: box-shadow 0.3s;
}
#site-header.is-scrolled {
  box-shadow: 0 2px 24px rgba(26,26,24,0.07);
}
.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  padding: 0 56px;
  max-width: 1400px;
  margin: 0 auto;
}
.site-logo {
  text-decoration: none;
  display: flex;
  align-items: center;
  flex-shrink: 0;
}
.site-logo-img {
  width: auto;
  height: 50px;
  display: block;
}
.header-right {
  display: flex;
  align-items: center;
  gap: 40px;
}
.global-nav {
  display: flex;
  align-items: center;
  gap: 36px;
  list-style: none;
}
.global-nav a {
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.3px;
  color: var(--body);
  text-decoration: none;
  transition: color 0.2s;
  white-space: nowrap;
}
.global-nav a:hover { color: var(--green); }
.global-nav a.is-current { color: var(--green); }
.btn-contact-nav {
  display: inline-flex;
  align-items: center;
  padding: 10px 26px;
  background: var(--dark);
  color: var(--white);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1px;
  text-decoration: none;
  white-space: nowrap;
  transition: background 0.2s;
}
.btn-contact-nav:hover { background: var(--green); }

/* Hamburger */
.hamburger {
  display: none;
  width: 40px;
  height: 40px;
  cursor: pointer;
  background: none;
  border: none;
  position: relative;
  z-index: 310;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 0;
}
.hamburger span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--dark);
  transition: all 0.3s;
  transform-origin: center;
}
.hamburger.is-open span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
.hamburger.is-open span:nth-child(2) { opacity: 0; }
.hamburger.is-open span:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }

/* Mobile nav overlay */
.nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 300;
  background: var(--white);
  padding: 100px 40px 48px;
  flex-direction: column;
  overflow-y: auto;
}
.nav-overlay.is-open { display: flex; }
.nav-overlay-list {
  list-style: none;
  display: flex;
  flex-direction: column;
}
.nav-overlay-list li { border-bottom: 1px solid var(--border); }
.nav-overlay-list a {
  display: block;
  padding: 22px 0;
  font-family: 'EB Garamond', 'Noto Serif JP', serif;
  font-size: 22px;
  font-weight: 500;
  color: var(--dark);
  text-decoration: none;
  transition: color 0.2s;
  letter-spacing: 0.5px;
}
.nav-overlay-list a:hover { color: var(--green); }
.nav-overlay-cta { margin-top: 32px; }

/* ── BUTTONS ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 15px 36px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 1px;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: all 0.25s;
  font-family: 'Noto Sans JP', sans-serif;
  white-space: nowrap;
}
.btn-primary {
  background: var(--green);
  color: var(--white);
}
.btn-primary:hover { background: var(--green-h); }
.btn-dark {
  background: var(--dark);
  color: var(--white);
}
.btn-dark:hover { background: #000; }
.btn-outline {
  background: transparent;
  color: var(--dark);
  border: 1px solid var(--border-md);
}
.btn-outline:hover {
  background: var(--dark);
  color: var(--white);
  border-color: var(--dark);
}
.btn-outline-white {
  background: transparent;
  color: var(--white);
  border: 1px solid rgba(255,255,255,0.35);
}
.btn-outline-white:hover {
  background: var(--white);
  color: var(--dark);
}
.btn-sm { padding: 10px 24px; font-size: 12px; }
.btn-text {
  background: none;
  border: none;
  padding: 0;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--green);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  transition: gap 0.2s;
  font-family: 'Noto Sans JP', sans-serif;
}
.btn-text:hover { gap: 16px; }
.btn-text::after { content: '→'; font-size: 13px; }
.btn-text-white {
  color: rgba(255,255,255,0.6);
}
.btn-text-white:hover { color: var(--white); }

/* ── PAGE HERO (subpages) ── */
.page-hero {
  background: var(--dark);
  color: var(--white);
  padding: 38px 0 34px;
}
.page-hero .container,
.page-hero .container-wide {
  display: grid;
  grid-template-columns: minmax(240px, 0.38fr) minmax(360px, 0.62fr);
  gap: 24px 72px;
  align-items: end;
}
.page-hero-label {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--stone);
  grid-column: 1 / -1;
  margin-bottom: 0;
}
.page-hero-label::before {
  content: '';
  display: block;
  width: 20px;
  height: 1px;
  background: var(--stone);
}
.page-hero-title {
  font-family: 'EB Garamond', 'Noto Serif JP', serif;
  font-size: clamp(28px, 3vw, 40px);
  font-weight: 500;
  line-height: 1.25;
  margin-bottom: 0;
  letter-spacing: 0.02em;
  font-feature-settings: 'palt';
}
.page-hero-lead {
  font-size: 14px;
  color: rgba(255,255,255,0.55);
  max-width: 720px;
  line-height: 1.75;
  margin-bottom: 2px;
  overflow-wrap: anywhere;
}

/* ── SECTION UTILITIES ── */
.section { padding: 104px 0; }
.section-sm { padding: 72px 0; }
.section-lg { padding: 136px 0; }
.section-dark { background: var(--dark); color: var(--white); }
.section-stone { background: var(--bg2); }
.section-cream { background: var(--cream); }

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: 20px;
}
.section-label::before {
  content: '';
  display: block;
  width: 24px;
  height: 1px;
  background: currentColor;
}
.section-label-light {
  color: rgba(255,255,255,0.35);
}

.section-title {
  font-family: 'EB Garamond', 'Noto Serif JP', serif;
  font-size: clamp(28px, 3.5vw, 44px);
  font-weight: 500;
  line-height: 1.35;
  color: var(--text);
  margin-bottom: 20px;
  letter-spacing: 0.02em;
  font-feature-settings: 'palt';
}
.section-title em {
  font-style: normal;
  color: var(--green);
}
.section-title-white { color: var(--white); }
.section-lead {
  font-size: 16px;
  color: var(--body);
  line-height: 1.9;
  max-width: 600px;
}
.section-lead-white { color: rgba(255,255,255,0.6); }

.section-header { margin-bottom: 64px; }
.section-header-row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 32px;
  margin-bottom: 64px;
}

/* ── WORK CARD ── */
.work-card {
  display: block;
  text-decoration: none;
  color: inherit;
  overflow: hidden;
  transition: transform 0.35s;
}
.work-card:hover { transform: translateY(-5px); }
.work-card-thumb {
  aspect-ratio: 4/3;
  overflow: hidden;
  position: relative;
  background: var(--bg2);
}
.work-card-thumb-inner {
  position: absolute;
  inset: 0;
  transition: transform 0.5s ease;
}
.work-card:hover .work-card-thumb-inner {
  transform: scale(1.04);
}
.spike-photo {
  background-repeat: no-repeat;
  background-position: center;
  background-size: cover;
}
.spike-photo::before,
.spike-photo::after {
  content: none !important;
  display: none !important;
}
.work-card-cat {
  position: absolute;
  top: 16px;
  left: 16px;
  z-index: 2;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  background: rgba(26,26,24,0.72);
  color: rgba(255,255,255,0.85);
  padding: 5px 12px;
  backdrop-filter: blur(4px);
}
.work-card-body { padding: 22px 0 0; }
.work-card-meta {
  font-size: 11px;
  color: var(--light);
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.work-card-title {
  font-family: 'EB Garamond', 'Noto Serif JP', serif;
  font-size: 21px;
  font-weight: 500;
  color: var(--dark);
  margin-bottom: 10px;
  line-height: 1.4;
  letter-spacing: 0.02em;
  font-feature-settings: 'palt';
}
.work-card-desc {
  font-size: 14px;
  color: var(--mid);
  line-height: 1.75;
}

/* ── CTA BAND ── */
.cta-band {
  background: var(--dark);
  color: var(--white);
  padding: 88px 0;
}
.cta-band-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 48px;
}
.cta-band-copy { flex: 1; }
.cta-band-label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--stone);
  margin-bottom: 16px;
  display: block;
}
.cta-band-title {
  font-family: 'EB Garamond', 'Noto Serif JP', serif;
  font-size: clamp(26px, 3vw, 38px);
  font-weight: 500;
  line-height: 1.4;
  margin-bottom: 14px;
  letter-spacing: 0.02em;
  font-feature-settings: 'palt';
}
.cta-band-body {
  font-size: 15px;
  color: rgba(255,255,255,0.55);
  line-height: 1.85;
  max-width: 500px;
}
.cta-band-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  flex-shrink: 0;
}

/* ── DATA TABLE ── */
.data-table {
  width: 100%;
  border-collapse: collapse;
}
.data-table tr { border-bottom: 1px solid var(--border); }
.data-table tr:first-child { border-top: 1px solid var(--border); }
.data-table th {
  padding: 18px 0;
  font-size: 12px;
  font-weight: 700;
  color: var(--mid);
  text-align: left;
  width: 160px;
  vertical-align: top;
  white-space: nowrap;
  letter-spacing: 0.5px;
}
.data-table td {
  padding: 18px 0;
  font-size: 15px;
  color: var(--body);
  line-height: 1.75;
  vertical-align: top;
}

/* ── FORM ── */
.form-group { margin-bottom: 28px; }
.form-label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--body);
  margin-bottom: 8px;
  letter-spacing: 0.3px;
}
.form-required {
  display: inline-block;
  font-size: 9px;
  font-weight: 700;
  color: var(--white);
  background: var(--green);
  padding: 2px 8px;
  margin-left: 8px;
  letter-spacing: 0.5px;
  vertical-align: middle;
}
.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 14px 16px;
  background: var(--cream);
  border: 1px solid var(--border-md);
  color: var(--text);
  font-size: 15px;
  font-family: 'Noto Sans JP', sans-serif;
  transition: border-color 0.2s, box-shadow 0.2s;
  -webkit-appearance: none;
  border-radius: 0;
  line-height: 1.6;
}
.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--green);
  box-shadow: 0 0 0 3px rgba(60,84,48,0.08);
}
.form-textarea { min-height: 160px; resize: vertical; }
.form-select {
  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 d='M1 1l5 5 5-5' stroke='%23787870' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 44px;
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.form-radio-group,
.form-check-group { display: flex; flex-wrap: wrap; gap: 12px 28px; }
.form-radio,
.form-check {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  font-size: 14px;
  color: var(--body);
}
.form-radio input,
.form-check input {
  width: 17px;
  height: 17px;
  accent-color: var(--green);
  cursor: pointer;
}
.form-note {
  font-size: 13px;
  color: var(--mid);
  margin-top: 8px;
  line-height: 1.7;
}
.privacy-box {
  height: 150px;
  overflow-y: auto;
  background: var(--cream);
  border: 1px solid var(--border-md);
  padding: 20px;
  font-size: 13px;
  color: var(--body);
  line-height: 1.85;
  margin-bottom: 16px;
}
.form-agree {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: var(--body);
  cursor: pointer;
}
.form-agree input {
  width: 17px;
  height: 17px;
  accent-color: var(--green);
  flex-shrink: 0;
  margin-top: 3px;
}

/* ── NEWS / COLUMN LIST ── */
.news-list { list-style: none; }
.news-item {
  display: flex;
  align-items: baseline;
  gap: 20px;
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
  text-decoration: none;
  color: inherit;
  transition: color 0.2s;
}
.news-item:first-child { border-top: 1px solid var(--border); }
.news-item:hover { color: var(--green); }
.news-date {
  font-size: 12px;
  color: var(--light);
  white-space: nowrap;
  flex-shrink: 0;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.5px;
}
.news-cat {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--green);
  border: 1px solid rgba(60,84,48,0.2);
  padding: 3px 10px;
  flex-shrink: 0;
  white-space: nowrap;
}
.news-title {
  font-size: 15px;
  line-height: 1.65;
  flex: 1;
}

/* ── FOOTER ── */
#site-footer {
  background: var(--dark2);
  color: rgba(255,255,255,0.6);
  padding: 72px 0 36px;
}
.footer-top {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 80px;
  padding-bottom: 56px;
  border-bottom: 1px solid rgba(255,255,255,0.07);
  margin-bottom: 36px;
}
.footer-logo-link {
  display: inline-flex;
  align-items: center;
  margin-bottom: 24px;
}
.footer-logo-img {
  width: 178px;
  height: auto;
  display: block;
  filter: brightness(0) invert(1);
  opacity: 0.9;
}
.footer-tagline {
  font-size: 13px;
  color: rgba(255,255,255,0.35);
  line-height: 1.9;
  max-width: 240px;
}
.footer-address {
  font-size: 13px;
  color: rgba(255,255,255,0.3);
  line-height: 1.9;
  margin-top: 16px;
}
.footer-nav-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}
.footer-nav-heading {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: rgba(255,255,255,0.25);
  margin-bottom: 18px;
}
.footer-nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.footer-nav-list a {
  font-size: 13px;
  color: rgba(255,255,255,0.5);
  text-decoration: none;
  transition: color 0.2s;
}
.footer-nav-list a:hover { color: var(--white); }
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.footer-copy {
  font-size: 12px;
  color: rgba(255,255,255,0.2);
}
.footer-area {
  font-size: 12px;
  color: rgba(255,255,255,0.25);
}

/* ── REVEAL ANIMATION ── */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.75s ease, transform 0.75s ease;
}
.reveal.visible { opacity: 1; transform: none; }
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ── RESPONSIVE ── */
@media (max-width: 1080px) {
  .container, .container-wide { padding-left: 40px; padding-right: 40px; }
  .header-inner { padding: 0 40px; }
  .page-hero .container,
  .page-hero .container-wide { column-gap: 40px; }
  .footer-top { grid-template-columns: 1fr; gap: 48px; }
  .footer-nav-grid { grid-template-columns: repeat(3, 1fr); }
  .cta-band-inner { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 768px) {
  .hamburger { display: flex; }
  .header-right { display: none; }
  #site-header { height: 84px; }
  .site-logo-img { height: 44px; }
  .container, .container-wide { padding-left: 24px; padding-right: 24px; }
  .header-inner { padding: 0 24px; }
  .section { padding: 72px 0; }
  .section-lg { padding: 96px 0; }
  .page-hero { padding: 34px 0 30px; }
  .page-hero .container,
  .page-hero .container-wide { display: block; }
  .page-hero-label { margin-bottom: 10px; }
  .page-hero-title { margin-bottom: 0; }
  .page-hero-lead { display: none; }
  .cta-band { padding: 64px 0; }
  .section-header-row { flex-direction: column; align-items: flex-start; }
  #site-footer { padding: 48px 0 28px; }
  .footer-top {
    display: block;
    padding-bottom: 28px;
    margin-bottom: 24px;
  }
  .footer-logo-link { margin-bottom: 18px; }
  .footer-tagline { max-width: none; }
  .footer-nav-grid { display: none; }
  .footer-bottom { gap: 8px; }
  .data-table th { width: 110px; font-size: 11px; }
  .form-row { grid-template-columns: 1fr; }
}

@media (max-width: 540px) {
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}

/* ============================================================
   COLUMN / BLOG — post-card, single-post
   ============================================================ */

/* ── COLUMN FILTER ── */
.column-filter-panel {
  display: grid;
  gap: 18px;
  margin-bottom: 32px;
  padding: 22px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.72);
}
.column-filter-main {
  display: grid;
  grid-template-columns: minmax(260px, 1fr) auto;
  gap: 18px;
  align-items: end;
}
.column-search {
  display: grid;
  gap: 8px;
}
.column-search span {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1.4px;
  text-transform: uppercase;
  color: var(--green);
}
.column-search input {
  width: 100%;
  height: 48px;
  border: 1px solid var(--border-md);
  background: var(--white);
  color: var(--text);
  font: inherit;
  font-size: 14px;
  padding: 0 16px;
  border-radius: 0;
}
.column-search input:focus {
  outline: none;
  border-color: var(--green);
  box-shadow: 0 0 0 3px rgba(60,84,48,0.08);
}
.column-filter-count {
  margin: 0;
  color: var(--mid);
  font-size: 13px;
  white-space: nowrap;
}
.column-category-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.column-filter-button {
  min-height: 36px;
  padding: 0 14px;
  border: 1px solid var(--border-md);
  background: var(--white);
  color: var(--body);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.2px;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s, color 0.2s;
}
.column-filter-button:hover,
.column-filter-button:focus-visible {
  border-color: var(--green);
  color: var(--green);
}
.column-filter-button.is-active {
  border-color: var(--green);
  background: var(--green);
  color: var(--white);
}
.column-empty {
  display: none;
  padding: 42px 24px;
  border: 1px solid var(--border);
  background: var(--white);
  color: var(--mid);
  font-size: 14px;
  line-height: 1.8;
  text-align: center;
}
.column-empty.is-visible {
  display: block;
}

/* ── POST CARD (一覧・関連) ── */
.post-card {
  display: block;
  text-decoration: none;
  color: inherit;
  border: 1px solid var(--border);
  background: var(--white);
  transition: border-color 0.2s, box-shadow 0.2s;
  overflow: hidden;
}
.post-card:hover {
  border-color: var(--border-md);
  box-shadow: 0 4px 24px rgba(26,26,24,0.06);
}
.post-card-meta {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 14px;
}
.post-card-date {
  font-size: 11px;
  color: var(--light);
  letter-spacing: 0.5px;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}
.post-card-cat {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--green);
  border: 1px solid rgba(60,84,48,0.22);
  padding: 3px 10px;
  white-space: nowrap;
}
.post-card-title {
  font-size: 16px;
  font-weight: 500;
  color: var(--dark);
  line-height: 1.55;
  margin-bottom: 10px;
  letter-spacing: 0.1px;
}
.post-card-excerpt {
  font-size: 13.5px;
  color: var(--mid);
  line-height: 1.85;
  margin-bottom: 18px;
}
.post-card-more {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--green);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: gap 0.2s;
}
.post-card-more::after { content: '→'; font-size: 12px; }
.post-card:hover .post-card-more { gap: 13px; }

/* サムネイル */
.post-card-thumb {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--bg2);
}
.post-card-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  filter: saturate(0.9);
  transition: transform 0.45s ease;
}
.post-card:hover .post-card-thumb img {
  transform: scale(1.04);
}
.post-card-body {
  padding: 24px 28px 30px;
}

/* Post card grid */
.post-card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
}

/* ── SINGLE POST ── */
.post-header {
  padding: 72px 0 64px;
  background: var(--dark);
  color: var(--white);
}
.post-header-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
}
.post-header-cat {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--green);
  border: 1px solid rgba(60,84,48,0.5);
  padding: 4px 12px;
  background: rgba(60,84,48,0.15);
}
.post-header-date {
  font-size: 12px;
  color: rgba(255,255,255,0.35);
  letter-spacing: 0.5px;
}
.post-header-title {
  font-family: 'EB Garamond', 'Noto Serif JP', serif;
  font-size: clamp(26px, 3.5vw, 40px);
  font-weight: 500;
  line-height: 1.45;
  letter-spacing: 0.02em;
  font-feature-settings: 'palt';
  margin-bottom: 24px;
}
.post-header-lead {
  font-size: 15px;
  color: rgba(255,255,255,0.5);
  line-height: 2;
  max-width: 640px;
}

/* ── POST CONTENT ── */
.post-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 80px 56px;
}
.post-content p {
  font-size: 16px;
  color: var(--body);
  line-height: 2.05;
  margin-bottom: 28px;
}
.post-content h2 {
  font-family: 'EB Garamond', 'Noto Serif JP', serif;
  font-size: clamp(22px, 2.5vw, 28px);
  font-weight: 500;
  color: var(--dark);
  line-height: 1.4;
  margin-top: 72px;
  margin-bottom: 24px;
  padding-top: 28px;
  border-top: 1px solid var(--border-md);
  letter-spacing: 0.02em;
  font-feature-settings: 'palt';
  position: relative;
  padding-left: 18px;
}
.post-content h2::before {
  content: '';
  position: absolute;
  left: 0;
  top: 28px;
  bottom: 0;
  width: 3px;
  background: var(--green);
}
.post-content h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--dark);
  margin-top: 48px;
  margin-bottom: 16px;
  line-height: 1.5;
}

/* ── POST CTA (記事末) ── */
.post-cta {
  background: var(--dark);
  color: var(--white);
  padding: 72px 0;
  margin-top: 0;
}
.post-cta-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 48px;
}
.post-cta-copy { flex: 1; }
.post-cta-label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--stone);
  margin-bottom: 14px;
  display: block;
}
.post-cta-title {
  font-family: 'EB Garamond', 'Noto Serif JP', serif;
  font-size: clamp(20px, 2.5vw, 28px);
  font-weight: 500;
  line-height: 1.4;
  letter-spacing: 0.02em;
  font-feature-settings: 'palt';
  margin-bottom: 12px;
}
.post-cta-body {
  font-size: 14px;
  color: rgba(255,255,255,0.5);
  line-height: 1.85;
}
.post-cta-actions { flex-shrink: 0; }

/* ── RELATED POSTS ── */
.related-posts {
  background: var(--bg);
  padding: 72px 0;
}
.related-posts-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 56px;
}
.related-posts-label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: 32px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.related-posts-label::before {
  content: '';
  width: 24px; height: 1px;
  background: currentColor;
}
.related-list { list-style: none; }
.related-item {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding: 18px 0;
  border-bottom: 1px solid var(--border);
  text-decoration: none;
  color: inherit;
  transition: color 0.2s;
}
.related-item:first-child { border-top: 1px solid var(--border); }
.related-item:hover { color: var(--green); }
.related-item-cat {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--green);
  border: 1px solid rgba(60,84,48,0.22);
  padding: 3px 10px;
  flex-shrink: 0;
  white-space: nowrap;
}
.related-item-title {
  font-size: 14.5px;
  line-height: 1.6;
  flex: 1;
}

/* ── RESPONSIVE: COLUMN ── */
@media (max-width: 860px) {
  .post-card-grid { grid-template-columns: repeat(2, 1fr); }
  .column-filter-main { grid-template-columns: 1fr; }
  .column-filter-count { white-space: normal; }
}
@media (max-width: 768px) {
  .post-content { padding: 64px 24px; }
  .post-cta-inner { flex-direction: column; align-items: flex-start; padding: 0 24px; gap: 32px; }
  .related-posts-inner { padding: 0 24px; }
}
@media (max-width: 600px) {
  .post-card-grid { grid-template-columns: 1fr; }
  .post-card-body { padding: 20px 20px 24px; }
  .column-filter-panel {
    padding: 16px;
    margin-bottom: 24px;
  }
  .column-filter-button {
    flex: 1 1 auto;
  }
}