/* ============================================================
   笔迹 — 公开更新记录（时间轴）
   ============================================================ */

.cl-body {
  background:
    radial-gradient(820px 400px at 50% -12%, var(--accent-softer), transparent 72%),
    var(--bg);
}

.js .cl-entry[data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.js .cl-entry[data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

.cl-main {
  max-width: 880px;
  margin: 0 auto;
  padding: clamp(20px, 3vw, 38px) 28px 76px;
  animation: fadeUp 0.55s ease both;
}

/* ---------------- 页头 ---------------- */
.cl-hero .eyebrow {
  margin-bottom: 12px;
}

.cl-hero h1 {
  margin: 0 0 14px;
  font-size: clamp(30px, 5vw, 46px);
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 1.2;
}

.cl-hero h1 em {
  font-style: normal;
  color: var(--accent-strong);
}

.cl-lead {
  max-width: 560px;
  margin: 0;
  font-size: 15px;
  line-height: 1.9;
  color: var(--ink-2);
}

.cl-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: 30px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--line);
  overflow: hidden;
}

.cl-stats > div {
  padding: 15px 12px;
  background: var(--surface);
  text-align: center;
}

.cl-stats b {
  display: block;
  font-size: clamp(17px, 2.4vw, 22px);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.cl-stats span {
  display: block;
  margin-top: 3px;
  font-size: 11px;
  color: var(--muted);
}

/* ---------------- 时间轴 ---------------- */
.cl-timeline {
  position: relative;
  margin-top: clamp(34px, 4.6vw, 52px);
  padding-left: 34px;
}

.cl-timeline::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 8px;
  bottom: 22px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--accent) 0%, var(--line-strong) 18%, var(--line) 100%);
}

.cl-entry {
  position: relative;
  margin-bottom: 20px;
  padding: 20px 24px 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
  scroll-margin-top: 96px;
}

.cl-dot {
  position: absolute;
  left: -34px;
  top: 24px;
  width: 13px;
  height: 13px;
  margin-left: 0.5px;
  border-radius: 50%;
  border: 2px solid var(--line-strong);
  background: var(--bg);
}

.cl-entry.is-latest {
  border-color: color-mix(in srgb, var(--accent) 34%, var(--line));
  box-shadow: var(--shadow-md);
}

.cl-entry.is-latest .cl-dot {
  border-color: var(--accent);
  background: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-softer);
}

.cl-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.cl-version {
  padding: 3px 10px;
  border-radius: 7px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.cl-head time {
  font-size: 12.5px;
  color: var(--muted);
}

.cl-flag {
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--coral);
  color: #fff;
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.cl-title {
  margin: 0 0 6px;
  font-size: clamp(18px, 2.4vw, 21px);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.cl-summary {
  margin: 0 0 16px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--ink-2);
}

.cl-items {
  display: flex;
  flex-direction: column;
  gap: 11px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.cl-items li {
  display: grid;
  grid-template-columns: 54px minmax(0, 1fr);
  align-items: start;
  gap: 12px;
}

.cl-items p {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--ink-2);
}

.cl-tag {
  padding: 2px 0;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 700;
  text-align: center;
  letter-spacing: 0.03em;
  white-space: nowrap;
}

.cl-tag.is-new {
  background: var(--accent-soft);
  color: var(--accent-strong);
}

.cl-tag.is-improve {
  background: var(--ok-soft);
  color: var(--ok);
}

.cl-tag.is-fix {
  background: rgba(255, 122, 92, 0.14);
  color: #c85a3f;
}

[data-theme="dark"] .cl-tag.is-fix {
  color: #ff9d80;
}

/* ---------------- 页尾 ---------------- */
.cl-foot {
  margin-top: 34px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

.cl-foot p {
  margin: 0 0 6px;
  font-size: 13px;
  line-height: 1.85;
  color: var(--muted);
}

.cl-foot .legal-foot {
  margin-top: 16px;
  padding-top: 18px;
}

/* ---------------- 响应式 ---------------- */
@media (max-width: 720px) {
  .cl-main {
    padding: 16px 18px 56px;
  }

  .cl-stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .cl-stats > div {
    padding: 13px 8px;
  }

  .cl-stats span {
    font-size: 10px;
  }

  .cl-timeline {
    padding-left: 26px;
  }

  .cl-timeline::before {
    left: 5px;
  }

  .cl-dot {
    left: -26px;
    top: 20px;
    width: 11px;
    height: 11px;
  }

  .cl-entry {
    padding: 17px 16px 18px;
  }

  .cl-items li {
    grid-template-columns: 1fr;
    gap: 5px;
  }

  .cl-tag {
    width: 52px;
  }

  .cl-summary {
    font-size: 13.5px;
  }

  .cl-items p {
    font-size: 13.5px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .js .cl-entry[data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ---------------- 筛选与年份分组 ---------------- */
.cl-filter {
  display: none;
  flex-wrap: wrap;
  align-items: center;
  gap: 7px;
  margin-top: 16px;
}

.js .cl-filter {
  display: flex;
}

.cl-chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 6px 13px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: var(--surface);
  font-size: 12.5px;
  color: var(--ink-2);
  cursor: pointer;
  transition: color 0.16s ease, border-color 0.16s ease, background 0.16s ease, box-shadow 0.16s ease;
}

.cl-chip em {
  font-style: normal;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--faint);
}

.cl-chip:hover {
  border-color: var(--accent);
  color: var(--accent-strong);
}

.cl-chip.is-active {
  border-color: var(--accent);
  background: var(--accent);
  color: #fff;
  box-shadow: 0 8px 18px -12px var(--accent);
}

.cl-chip.is-active em {
  color: rgba(255, 255, 255, 0.72);
}

.cl-filter-empty {
  flex: 1 1 100%;
  margin: 4px 0 0;
  font-size: 12.5px;
  color: var(--muted);
}

.cl-year {
  margin: 26px 0 12px;
}

.cl-year-group:first-child .cl-year {
  margin-top: 0;
}

.cl-year-toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 2px 0;
  border: 0;
  background: transparent;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--accent-strong);
}

.cl-year-toggle em {
  font-style: normal;
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0;
  color: var(--faint);
}

.cl-year-toggle svg {
  width: 13px;
  height: 13px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: transform 0.2s ease;
}

.cl-year-toggle:hover {
  color: var(--accent);
}

.cl-year-group.is-collapsed .cl-year-toggle svg {
  transform: rotate(-90deg);
}

.cl-year-group.is-collapsed .cl-entry,
.cl-year-group.is-empty,
.cl-entry.is-hidden,
.cl-items li.is-hidden {
  display: none;
}