/* ===== COLUMN ===== */
.column { position: relative; }
.column__head {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 80px;
  align-items: end;
  margin-bottom: 56px;
}
.column__title { font-size: clamp(40px, 5vw, 76px); line-height: 1.18; margin: 16px 0 0; font-weight: 500; }
.column__title em { font-family: var(--serif-en-display); font-style: italic; font-weight: 400; color: var(--accent); margin: 0 8px; }
.column__lede { font-size: 15px; line-height: 2; color: var(--on-paper-mute); margin: 0; }

.column__filter {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 56px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--paper-line);
}
.column__filter-btn {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  padding: 10px 18px;
  border: 1px solid var(--paper-line);
  background: transparent;
  color: var(--on-paper-mute);
  cursor: pointer;
  border-radius: 0;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all 0.3s ease;
}
.column__filter-btn:hover {
  border-color: var(--on-paper);
  color: var(--on-paper);
}
.column__filter-btn.is-active {
  background: var(--on-paper);
  color: var(--paper);
  border-color: var(--on-paper);
}
.column__filter-count {
  font-size: 10px;
  opacity: 0.6;
  letter-spacing: 0.05em;
}

.column__cat {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--chrome);
  padding: 4px 10px;
  border: 1px solid var(--chrome);
  display: inline-block;
}
.column__cat[data-cat="News"] { color: var(--accent-deep, #A8364A); border-color: var(--accent-deep, #A8364A); }
.column__cat[data-cat="Notice"] { color: #6E7A8E; border-color: #6E7A8E; }
.column__cat[data-cat="Event"] { color: #B89968; border-color: #B89968; }
.column__date {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--on-paper-mute);
}
.column__read {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.15em;
  color: var(--on-paper-faint);
}

.column__feature {
  display: grid;
  grid-template-columns: auto 1fr auto;
  grid-template-rows: auto auto auto;
  grid-template-areas:
    "meta meta meta"
    "title title cta"
    "excerpt excerpt cta";
  gap: 24px 48px;
  padding: 56px 48px;
  border: 1px solid var(--paper-line);
  background: var(--paper-2);
  margin-bottom: 56px;
  text-decoration: none;
  color: inherit;
  transition: all 0.4s ease;
  position: relative;
  overflow: hidden;
}
.column__feature::before {
  content: "Featured";
  position: absolute;
  top: 0;
  left: 0;
  background: var(--chrome);
  color: var(--paper);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  padding: 6px 14px;
}
.column__feature-meta {
  grid-area: meta;
  display: flex;
  align-items: center;
  gap: 20px;
  margin-top: 20px;
}
.column__feature-title {
  grid-area: title;
  font-size: clamp(24px, 2.4vw, 34px);
  line-height: 1.45;
  margin: 0;
  font-weight: 500;
  letter-spacing: 0.005em;
}
.column__feature-excerpt {
  grid-area: excerpt;
  font-size: 15px;
  line-height: 1.95;
  color: var(--on-paper-mute);
  margin: 0;
  max-width: 760px;
}
.column__feature-cta {
  grid-area: cta;
  align-self: end;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--serif-en-display);
  font-size: 14px;
  color: var(--chrome);
  white-space: nowrap;
  letter-spacing: 0.04em;
}
.column__feature-cta svg { transition: transform 0.4s ease; }
.column__feature:hover .column__feature-cta svg { transform: translateX(4px); }

.column__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid var(--paper-line);
}
.column__card {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 36px 32px 32px;
  border-right: 1px solid var(--paper-line);
  border-bottom: 1px solid var(--paper-line);
  text-decoration: none;
  color: inherit;
  transition: background 0.4s ease, transform 0.4s ease;
  position: relative;
}
.column__card:nth-child(3n) { border-right: none; }
.column__card:hover { background: var(--paper-2); }
.column__card-meta {
  display: flex;
  align-items: center;
  gap: 14px;
}
.column__card-title {
  font-size: 18px;
  line-height: 1.55;
  margin: 0;
  font-weight: 500;
  letter-spacing: 0.005em;
  flex: 1;
}
.column__card-excerpt {
  font-size: 13px;
  line-height: 1.85;
  color: var(--on-paper-mute);
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  font-feature-settings: "palt";
}
.column__card-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
  padding-top: 20px;
  border-top: 1px solid var(--paper-line);
  color: var(--on-paper-mute);
}
.column__card:hover .column__card-foot svg { transform: translateX(4px); transition: transform 0.4s ease; }

.column__more {
  margin-top: 56px;
  display: flex;
  justify-content: center;
}

.column__empty {
  text-align: center;
  color: var(--on-paper-faint);
  padding: 60px 0;
}

.column__more {
  display: flex;
  justify-content: center;
  margin-top: 56px;
  padding-top: 32px;
  border-top: 1px solid var(--paper-line);
}
.column__more-btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 18px 36px;
  background: transparent;
  border: 1px solid var(--paper-line-strong);
  font-family: var(--sans-jp);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--on-paper);
  cursor: pointer;
  transition: background 0.3s ease, border-color 0.3s ease, color 0.3s ease;
}
.column__more-btn:hover {
  background: var(--chrome);
  border-color: var(--chrome);
  color: #FFFFFF;
}

/* Modal */
.column__modal {
  position: fixed;
  inset: 0;
  background: rgba(20, 18, 16, 0.55);
  z-index: 200;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  overflow-y: auto;
  padding: 60px 24px;
  backdrop-filter: blur(4px);
  animation: column-fade 0.25s ease;
}
@keyframes column-fade { from { opacity: 0; } to { opacity: 1; } }
.column__modal-inner {
  background: var(--paper);
  max-width: 820px;
  width: 100%;
  padding: 64px 72px 80px;
  position: relative;
  border: 1px solid var(--paper-line);
  animation: column-slide 0.35s cubic-bezier(0.2, 0.8, 0.2, 1);
}
@keyframes column-slide { from { transform: translateY(20px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }
.column__modal-close {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 40px;
  height: 40px;
  background: transparent;
  border: 1px solid var(--paper-line);
  cursor: pointer;
  color: var(--on-paper);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
}
.column__modal-close:hover { background: var(--on-paper); color: var(--paper); }
.column__modal-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--paper-line);
}
.column__author {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--on-paper-mute);
}
.column__article h1 {
  font-family: var(--serif-jp-display, var(--serif-jp));
  font-size: clamp(28px, 3.2vw, 42px);
  line-height: 1.4;
  margin: 0 0 32px;
  font-weight: 500;
  letter-spacing: 0.005em;
}
.column__article h2 {
  font-family: var(--serif-jp-display, var(--serif-jp));
  font-size: 22px;
  line-height: 1.5;
  margin: 48px 0 16px;
  padding-top: 24px;
  border-top: 1px solid var(--paper-line);
  font-weight: 500;
}
.column__article h3 {
  font-size: 17px;
  margin: 32px 0 12px;
  font-weight: 600;
  color: var(--chrome);
}
.column__article p {
  font-size: 15px;
  line-height: 2;
  color: var(--on-paper);
  margin: 0 0 20px;
  font-feature-settings: "palt";
}
.column__article ul {
  margin: 0 0 24px;
  padding-left: 1.2em;
}
.column__article li {
  font-size: 15px;
  line-height: 2;
  margin-bottom: 6px;
}
.column__article strong { font-weight: 600; color: var(--accent-deep, var(--chrome)); }
.column__article a { color: var(--chrome); text-decoration: underline; text-underline-offset: 3px; }
.column__article code {
  font-family: var(--mono);
  font-size: 0.9em;
  background: var(--paper-2);
  padding: 2px 6px;
  border: 1px solid var(--paper-line);
}
.column__article pre {
  background: var(--paper-2);
  border: 1px solid var(--paper-line);
  padding: 20px;
  overflow-x: auto;
  margin: 0 0 24px;
}
.column__article pre code {
  background: transparent;
  border: none;
  padding: 0;
  font-size: 13px;
  line-height: 1.7;
}

@media (max-width: 1100px) {
  .column__head { grid-template-columns: 1fr; gap: 32px; }
  .column__feature {
    grid-template-columns: 1fr;
    grid-template-areas:
      "meta"
      "title"
      "excerpt"
      "cta";
    padding: 40px 28px;
  }
  .column__feature-cta { align-self: start; }
  .column__grid { grid-template-columns: 1fr 1fr; }
  .column__card:nth-child(3n) { border-right: 1px solid var(--paper-line); }
  .column__card:nth-child(2n) { border-right: none; }
}
@media (max-width: 720px) {
  .column__head { margin-bottom: 40px; }
  .column__filters { gap: 6px; flex-wrap: wrap; }
  .column__filter-btn { font-size: 11px; padding: 6px 12px; }
  .column__feature { padding: 28px 22px; }
  .column__feature-title { font-size: clamp(22px, 5.5vw, 30px); line-height: 1.4; }
  .column__feature-excerpt { font-size: 14px; }
  .column__card { padding: 24px 22px; }
  .column__card-title { font-size: 17px; }
  .column__card-excerpt { font-size: 13px; }
}
@media (max-width: 700px) {
  .column__grid { grid-template-columns: 1fr; }
  .column__card { border-right: none !important; }
  .column__modal-inner { padding: 48px 20px 48px; }
  .column__article h1 { font-size: 24px; line-height: 1.4; margin-bottom: 24px; }
  .column__article h2 { font-size: 19px; margin-top: 36px; }
  .column__article p { font-size: 14px; line-height: 1.95; }
  .column__article li { font-size: 14px; }
  .column__modal-close { top: 12px; right: 12px; }
}