/* ============================================================
   歸檔時間軸 - 沿用主題色彩變數，自動支援深色模式
   ============================================================ */

.tl-outer { overflow: hidden; }

.tl {
  position: relative;
  padding: 10px 24px 18px 32px;
}
/* 主軸線 */
.tl::before {
  content: "";
  position: absolute;
  left: 11px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--color-link), var(--color-border) 90%);
}

/* ---------- 年份 ---------- */
.tl-year {
  position: relative;
  margin: 26px 0 16px;
}
.tl-year:first-child { margin-top: 6px; }
.tl-year::before {
  content: "";
  position: absolute;
  left: -27px;
  top: 50%;
  transform: translateY(-50%);
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-link);
  box-shadow: 0 0 0 4px var(--color-wrap), 0 0 8px var(--color-link);
}
.tl-year-badge {
  display: inline-block;
  font-size: 15px;
  font-weight: 800;
  letter-spacing: .03em;
  color: #fff;
  background: linear-gradient(135deg, var(--color-link), var(--red-0, var(--color-link)));
  padding: 5px 16px;
  border-radius: 999px;
  box-shadow: 0 4px 12px var(--color-hover-shadow);
}

/* ---------- 項目 ---------- */
.tl-item {
  position: relative;
  display: flex;
  gap: 14px;
  align-items: stretch;
  margin-bottom: 14px;
}
.tl-item::before {
  content: "";
  position: absolute;
  left: -26px;
  top: 20px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-wrap);
  border: 2px solid var(--color-link);
  box-shadow: 0 0 0 3px var(--color-wrap);
  transition: transform .2s, background .2s;
  z-index: 1;
}
.tl-item:hover::before {
  background: var(--color-link);
  transform: scale(1.25);
}

.tl-card {
  flex: 1 1 auto;
  min-width: 0;
  background: var(--color-wrap);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 13px 16px;
  box-shadow: var(--shadow-card);
  transition: transform .25s, box-shadow .25s, border-color .25s;
}
.tl-item:hover .tl-card {
  transform: translateX(4px);
  border-color: var(--color-link);
  box-shadow: var(--shadow-card-hover);
}

.tl-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 6px;
}
.tl-date {
  font-size: 12px;
  font-weight: 700;
  color: var(--color-link);
  font-family: var(--font-code, monospace);
  letter-spacing: .02em;
}
.tl-chip {
  font-size: 11px;
  color: var(--color-default);
  background: var(--color-background);
  border-radius: 6px;
  padding: 2px 9px;
}

.tl-title {
  display: inline-block;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.45;
  color: var(--color-default);
  text-decoration: none;
  transition: color .2s;
  word-break: break-word;
}
.tl-title:hover { color: var(--color-link); }
.tl-title-disabled { color: var(--grey-9); cursor: not-allowed; }
.tl-lock {
  display: block;
  font-size: 12px;
  color: var(--grey-9);
  margin-top: 4px;
}

.tl-desc {
  margin: 6px 0 0;
  font-size: 13px;
  line-height: 1.6;
  color: var(--grey-9);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.tl-cover {
  flex: 0 0 auto;
  width: 92px;
  align-self: stretch;
  border-radius: 10px;
  overflow: hidden;
  display: block;
}
.tl-cover img {
  width: 100%;
  height: 100%;
  min-height: 72px;
  object-fit: cover;
  display: block;
  transition: transform .35s;
}
.tl-item:hover .tl-cover img { transform: scale(1.07); }

/* ---------- RWD ---------- */
@media screen and (max-width: 560px) {
  .tl { padding: 8px 14px 14px 28px; }
  .tl::before { left: 9px; }
  .tl-year::before { left: -25px; }
  .tl-item::before { left: -24px; }
  .tl-cover { width: 70px; }
  .tl-title { font-size: 15px; }
}
@media screen and (max-width: 400px) {
  .tl-cover { display: none; }
}