@font-face {
  font-family: "Times New Roman Embedded";
  src: url("./fonts/times-new-roman-regular.9442898153d6.woff2") format("woff2");
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  unicode-range: U+0020-00FF, U+2013-2014, U+2018-2019, U+201C-201D, U+2026;
}

@font-face {
  font-family: "Times New Roman Embedded";
  src: url("./fonts/times-new-roman-bold.7db5f81091cd.woff2") format("woff2");
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  unicode-range: U+0020-00FF, U+2013-2014, U+2018-2019, U+201C-201D, U+2026;
}

:root {
  --paper: #fcfcfa;
  --ink: #171717;
  --muted: #77736c;
  --line: #dedbd5;
  --marker-border: #c6c0b8;
  --quote-ink: #3c3935;
  --accent: #a1432f;
  --accent-dark: #7f3021;
  --accent-soft: rgba(161, 67, 47, 0.075);
  --accent-halo: rgba(161, 67, 47, 0.2);
  --serif: "Songti SC", "STSong", "Noto Serif CJK SC", "Source Han Serif SC", Georgia, serif;
  --timeline-serif: "Times New Roman Embedded", "Times New Roman", Times, "Nimbus Roman No9 L", "Liberation Serif", serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --size-timeline-heading: clamp(1.24rem, 2.5vw, 1.32rem);
  --size-timeline-item: clamp(1.05rem, 2.2vw, 1.12rem);
  --size-quote: clamp(0.78rem, 2.6vw, 1rem);
  --size-quote-source: 0.72rem;
  --size-filing: 0.64rem;
  color-scheme: light dark;
}

* { box-sizing: border-box; }

html {
  font-size: 112.5%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  line-height: 1.7;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: 0.25em; }
a:focus-visible { outline: 2px solid var(--ink); outline-offset: 5px; }
::selection { background: var(--ink); color: var(--paper); }

.fa-icon {
  display: block;
  width: 1em;
  height: 1em;
  overflow: visible;
  fill: currentColor;
}

.site-shell {
  display: flex;
  width: min(100% - 2.5rem, 48rem);
  min-height: 100svh;
  margin: 0 auto;
  flex-direction: column;
}

.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 10;
  padding: 0.5rem 0.8rem;
  background: var(--ink);
  color: var(--paper);
  font-size: 0.8rem;
  transform: translateY(-180%);
  transition: transform 160ms ease;
}

.skip-link:focus { transform: translateY(0); }

.site-header {
  padding: clamp(3.6rem, 9vw, 6rem) 0 clamp(2.5rem, 6vw, 4rem);
  text-align: center;
}

.title-link { display: block; text-decoration: none; }

.title-mark {
  display: block;
  width: min(100%, 15.625rem);
  height: auto;
  margin: 0 auto;
  fill: var(--ink);
}

.title-text {
  fill: var(--ink);
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", sans-serif;
  font-size: 22px;
  font-weight: 700;
}

.home-content {
  width: min(100%, 34rem);
  margin: 0 auto;
  padding: clamp(1.5rem, 4vw, 2.75rem) 0 clamp(2.5rem, 7vw, 4.5rem);
  flex: 1;
}

.timeline {
  position: relative;
  padding-left: 2.2rem;
  font-family: var(--timeline-serif);
}

.timeline:not(.timeline-empty)::before {
  position: absolute;
  top: 1.35rem;
  bottom: 1.35rem;
  left: 0.32rem;
  width: 1px;
  background: linear-gradient(to bottom, transparent, var(--line) 1.5rem, var(--line) calc(100% - 1.5rem), transparent);
  content: "";
}

.timeline-month {
  position: relative;
}

.timeline-month + .timeline-month {
  margin-top: 1.15rem;
}

.timeline-month-marker {
  position: absolute;
  z-index: 2;
  top: 0.88rem;
  left: -2.55rem;
  display: grid;
  width: 1.35rem;
  height: 1.35rem;
  place-items: center;
  border: 1px solid var(--marker-border);
  border-radius: 0.38rem;
  background: var(--paper);
  box-shadow: 0 0 0 0.23rem var(--paper), 0 0.18rem 0.5rem rgba(23, 23, 23, 0.09);
  color: var(--muted);
  pointer-events: none;
  transform: rotate(-4deg);
  transition: color 180ms ease, background-color 180ms ease, border-color 180ms ease, box-shadow 180ms ease, transform 220ms ease;
}

.timeline-month-marker .fa-icon {
  width: 0.75rem;
  height: 0.75rem;
  transition: transform 220ms ease;
}

.timeline-month::after {
  position: absolute;
  top: 1.56rem;
  left: -1.2rem;
  width: 0.65rem;
  height: 1px;
  background: linear-gradient(90deg, var(--line), rgba(222, 219, 213, 0.12));
  content: "";
  pointer-events: none;
  transition: background 180ms ease;
}

.timeline-month[open] > summary > .timeline-month-marker {
  border-color: var(--accent);
  background: var(--accent);
  box-shadow: 0 0 0 0.23rem var(--paper), 0 0 0 0.11rem var(--accent-halo), 0 0.24rem 0.68rem rgba(127, 48, 33, 0.24);
  color: var(--paper);
  transform: rotate(0) scale(1.05);
  animation: month-marker-open 360ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.timeline-month[open] > summary > .timeline-month-marker .fa-icon {
  transform: rotate(-5deg) scale(0.96);
}

.timeline-month[open]::after {
  background: linear-gradient(90deg, rgba(161, 67, 47, 0.62), rgba(161, 67, 47, 0.12));
}

.timeline-month:not([open]) > summary:hover > .timeline-month-marker,
.timeline-month:not([open]) > summary:focus-visible > .timeline-month-marker {
  border-color: var(--accent);
  box-shadow: 0 0 0 0.23rem var(--paper), 0 0 0 0.1rem var(--accent-halo), 0 0.2rem 0.55rem rgba(127, 48, 33, 0.14);
  color: var(--accent);
  transform: rotate(0) scale(1.06);
}

.timeline-month summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 3.15rem;
  margin-left: -0.55rem;
  padding: 0.55rem 0.7rem;
  border-radius: 0.28rem;
  cursor: pointer;
  font-family: var(--timeline-serif);
  font-size: var(--size-timeline-heading);
  list-style: none;
  transition: background-color 180ms ease, color 180ms ease;
}

.timeline-month summary::-webkit-details-marker { display: none; }

.timeline-month summary:hover,
.timeline-month[open] summary {
  background: linear-gradient(90deg, var(--accent-soft), rgba(161, 67, 47, 0));
  box-shadow: inset 0.12rem 0 0 rgba(161, 67, 47, 0.3);
}

.timeline-month summary:focus-visible {
  outline: 1px solid var(--ink);
  outline-offset: 0.2rem;
}

.timeline-month-label {
  display: inline-flex;
  align-items: baseline;
  gap: 0.28em;
  font-variant-numeric: lining-nums tabular-nums;
  letter-spacing: 0.025em;
}

.timeline-divider {
  color: var(--line);
  font-size: 0.78em;
}

.timeline-year,
.timeline-month-number {
  color: var(--ink);
  font-family: var(--timeline-serif);
  font-size: 1em;
  font-weight: 600;
  letter-spacing: 0.025em;
}

.timeline-month summary::after {
  flex: 0 0 auto;
  width: 0.42rem;
  height: 0.42rem;
  margin: -0.2rem 0.12rem 0 0.85rem;
  border-right: 1px solid var(--muted);
  border-bottom: 1px solid var(--muted);
  content: "";
  transform: rotate(45deg);
  transition: transform 200ms ease, border-color 180ms ease;
}

.timeline-month[open] summary::after {
  border-color: var(--ink);
  transform: translateY(0.2rem) rotate(225deg);
}

.timeline-month summary small {
  margin-left: auto;
  color: var(--muted);
  font-family: var(--timeline-serif);
  font-size: 0.72rem;
  font-weight: 400;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.055em;
  white-space: nowrap;
}

.timeline-count-number {
  color: var(--accent-dark);
  font-size: 1.06em;
  font-weight: 600;
}

.timeline-month-body {
  position: relative;
  margin: 0.15rem 0 1.2rem;
  padding: 0.25rem 0 0.4rem 1.15rem;
}

.timeline-month-body::before {
  position: absolute;
  top: 0.35rem;
  bottom: 0.65rem;
  left: 0.2rem;
  width: 1px;
  background: linear-gradient(to bottom, rgba(161, 67, 47, 0.48), var(--line) 1.2rem, rgba(222, 219, 213, 0.18));
  content: "";
}

.timeline-month ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

.timeline-month li {
  position: relative;
}

.timeline-entry-marker {
  position: absolute;
  z-index: 2;
  top: 0.79rem;
  left: -1.51rem;
  display: grid;
  width: 1.12rem;
  height: 1.12rem;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 0.3rem;
  background: var(--paper);
  box-shadow: 0 0 0 0.14rem var(--paper), 0 0.12rem 0.32rem rgba(23, 23, 23, 0.08);
  color: var(--resource-color, var(--muted));
  pointer-events: none;
  transition: color 170ms ease, background-color 170ms ease, border-color 170ms ease, box-shadow 170ms ease, transform 190ms ease;
}

.timeline-entry-marker .fa-icon {
  width: 0.76rem;
  height: 0.76rem;
  transition: transform 190ms ease;
}

.timeline-month li[data-resource-kind="pdf"] { --resource-color: #ac3e32; }
.timeline-month li[data-resource-kind="code"] { --resource-color: #37634f; }
.timeline-month li[data-resource-kind="image"] { --resource-color: #946622; }
.timeline-month li[data-resource-kind="audio"] { --resource-color: #704f86; }
.timeline-month li[data-resource-kind="video"] { --resource-color: #35606a; }
.timeline-month li[data-resource-kind="archive"] { --resource-color: #865933; }
.timeline-month li[data-resource-kind="document"] { --resource-color: #6d6963; }

.timeline-month li:hover .timeline-entry-marker,
.timeline-month li:focus-within .timeline-entry-marker {
  border-color: var(--resource-color);
  background: var(--resource-color);
  box-shadow: 0 0 0 0.14rem var(--paper), 0 0 0 0.09rem var(--accent-halo), 0 0.22rem 0.48rem rgba(23, 23, 23, 0.14);
  color: var(--paper);
  transform: translateX(0.08rem) rotate(3deg) scale(1.12);
}

.timeline-month li:hover .timeline-entry-marker .fa-icon,
.timeline-month li:focus-within .timeline-entry-marker .fa-icon {
  transform: rotate(-7deg) scale(0.94);
}

.timeline-month li::after {
  position: absolute;
  top: 1.35rem;
  left: -0.39rem;
  width: 0.39rem;
  height: 1px;
  background: linear-gradient(90deg, var(--line), rgba(222, 219, 213, 0.14));
  content: "";
  pointer-events: none;
  transition: background 170ms ease;
}

.timeline-month li:hover::after,
.timeline-month li:focus-within::after {
  background: linear-gradient(90deg, var(--resource-color), rgba(161, 67, 47, 0.12));
}

.timeline-month li + li { margin-top: 0.2rem; }

.timeline-month li a {
  display: grid;
  width: 100%;
  align-items: center;
  grid-template-columns: minmax(6.1rem, auto) minmax(0, 1fr) 0.8rem;
  gap: 1rem;
  padding: 0.68rem 0.72rem;
  border-radius: 0.24rem;
  color: var(--muted);
  text-decoration: none;
  transition: background-color 170ms ease, box-shadow 170ms ease, color 170ms ease, transform 170ms ease;
}

.timeline-month li a:hover {
  background: linear-gradient(90deg, var(--accent-soft), rgba(161, 67, 47, 0.018));
  box-shadow: inset 0.12rem 0 0 rgba(161, 67, 47, 0.38);
  color: var(--ink);
  transform: translateX(0.18rem);
}

.timeline-month li a:focus-visible {
  outline: 1px solid var(--accent);
  outline-offset: 0.15rem;
}

.timeline-month li a:hover time,
.timeline-month li a:focus-visible time {
  color: var(--accent-dark);
}

.timeline-month time {
  font-family: var(--timeline-serif);
  font-size: var(--size-timeline-item);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.025em;
}

.timeline-item-title {
  color: var(--ink);
  font-family: var(--timeline-serif);
  font-size: var(--size-timeline-item);
  font-weight: 600;
  letter-spacing: 0.01em;
}

.timeline-item-arrow {
  position: relative;
  width: 0.72rem;
  height: 0.72rem;
  opacity: 0.28;
  transform: translateX(-0.18rem);
  transition: opacity 170ms ease, transform 170ms ease;
}

.timeline-item-arrow::before {
  position: absolute;
  top: 50%;
  left: 0;
  width: 0.68rem;
  height: 1px;
  background: currentColor;
  content: "";
}

.timeline-item-arrow::after {
  position: absolute;
  top: calc(50% - 0.19rem);
  right: 0;
  width: 0.34rem;
  height: 0.34rem;
  border-top: 1px solid currentColor;
  border-right: 1px solid currentColor;
  content: "";
  transform: rotate(45deg);
}

.timeline-month li a:hover .timeline-item-arrow,
.timeline-month li a:focus-visible .timeline-item-arrow {
  color: var(--accent);
  opacity: 1;
  transform: translateX(0);
}

.timeline-month[open] .timeline-month-body {
  animation: timeline-reveal 260ms ease-out both;
}

@keyframes timeline-reveal {
  from { opacity: 0; transform: translateY(-0.35rem); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes month-marker-open {
  0% { transform: rotate(-7deg) scale(0.86); }
  64% { transform: rotate(2deg) scale(1.11); }
  100% { transform: rotate(0) scale(1.05); }
}

.quote-figure {
  width: 100%;
  margin: 0 0 clamp(3rem, 8vw, 4.75rem);
  overflow: visible;
  text-align: center;
}

.quote-figure blockquote {
  margin: 0 auto;
  color: var(--quote-ink);
  font-family: var(--serif);
  font-size: var(--size-quote);
  letter-spacing: 0.035em;
  line-height: 1.8;
  white-space: nowrap;
}

.quote-figure figcaption {
  margin-top: 0.75rem;
  color: var(--muted);
  font-family: var(--serif);
  font-size: var(--size-quote-source);
  letter-spacing: 0.06em;
}

.site-footer {
  padding: clamp(2.8rem, 7vw, 4.5rem) 0 3rem;
  text-align: center;
}

.site-footer hr {
  width: 7rem;
  height: 1px;
  margin: 0 auto 0.85rem;
  border: 0;
  background: var(--line);
}

.filing-links {
  display: flex;
  align-items: center;
  flex-direction: column;
  gap: 0.3rem;
  color: var(--muted);
  font-size: var(--size-filing);
  letter-spacing: 0.04em;
}

.filing-links a { text-decoration: none; }
.filing-links a:hover { color: var(--ink); text-decoration: underline; }

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #151513;
    --ink: #eeeae2;
    --muted: #aaa49a;
    --line: #3c3934;
    --marker-border: #555049;
    --quote-ink: #d8d2c7;
    --accent: #d07761;
    --accent-dark: #e39480;
    --accent-soft: rgba(208, 119, 97, 0.13);
    --accent-halo: rgba(208, 119, 97, 0.28);
    color-scheme: dark;
  }

  .timeline-month li[data-resource-kind="pdf"] { --resource-color: #df7c70; }
  .timeline-month li[data-resource-kind="code"] { --resource-color: #72ad8d; }
  .timeline-month li[data-resource-kind="image"] { --resource-color: #c99b51; }
  .timeline-month li[data-resource-kind="audio"] { --resource-color: #ae87c7; }
  .timeline-month li[data-resource-kind="video"] { --resource-color: #70aab5; }
  .timeline-month li[data-resource-kind="archive"] { --resource-color: #c48b63; }
  .timeline-month li[data-resource-kind="document"] { --resource-color: #aaa59d; }
}

@media (max-width: 640px) {
  html { font-size: 106.25%; }

  .site-shell { width: min(100% - 2rem, 48rem); }

  .site-header {
    padding-top: 3rem;
    padding-bottom: 2rem;
  }

  .home-content { padding-top: 1rem; }

  .quote-figure {
    margin-bottom: 3rem;
  }

  .quote-figure blockquote {
    letter-spacing: 0.02em;
  }

  .quote-figure figcaption { font-size: var(--size-quote-source); }
}

@media (max-width: 420px) {
  .timeline { padding-left: 1.7rem; }

  .timeline:not(.timeline-empty)::before { left: 0.25rem; }

  .timeline-month-marker {
    top: 0.96rem;
    left: -2.04rem;
    width: 1.18rem;
    height: 1.18rem;
    border-radius: 0.34rem;
  }

  .timeline-month-marker .fa-icon {
    width: 0.64rem;
    height: 0.64rem;
  }

  .timeline-month::after {
    left: -0.86rem;
    width: 0.51rem;
  }

  .timeline-month summary {
    margin-left: -0.35rem;
    padding-right: 0.45rem;
    padding-left: 0.5rem;
  }

  .timeline-month-body { padding-left: 0.9rem; }

  .timeline-month-body::before { left: 0.12rem; }

  .timeline-entry-marker {
    top: 0.82rem;
    left: -1.31rem;
    width: 1.06rem;
    height: 1.06rem;
    border-radius: 0.28rem;
  }

  .timeline-entry-marker .fa-icon {
    width: 0.72rem;
    height: 0.72rem;
  }

  .timeline-month li::after {
    left: -0.25rem;
    width: 0.25rem;
  }

  .timeline-month li a {
    grid-template-columns: 5.75rem minmax(0, 1fr);
    gap: 0.65rem;
    padding-right: 0.5rem;
    padding-left: 0.5rem;
  }

  .timeline-item-arrow { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .skip-link { transition: none; }

  .timeline-month::after,
  .timeline-month-marker,
  .timeline-month-marker .fa-icon,
  .timeline-month summary,
  .timeline-month summary::after,
  .timeline-month li::after,
  .timeline-entry-marker,
  .timeline-entry-marker .fa-icon,
  .timeline-month li a,
  .timeline-item-arrow {
    transition: none;
  }

  .timeline-month[open] .timeline-month-body,
  .timeline-month[open] > summary > .timeline-month-marker {
    animation: none;
  }

  .timeline-month[open] > summary > .timeline-month-marker,
  .timeline-month:not([open]) > summary:hover > .timeline-month-marker,
  .timeline-month:not([open]) > summary:focus-visible > .timeline-month-marker,
  .timeline-month[open] > summary > .timeline-month-marker .fa-icon {
    transform: none;
  }

  .timeline-month li:hover .timeline-entry-marker,
  .timeline-month li:focus-within .timeline-entry-marker,
  .timeline-month li:hover .timeline-entry-marker .fa-icon,
  .timeline-month li:focus-within .timeline-entry-marker .fa-icon {
    transform: none;
  }

  .timeline-month li a:hover { transform: none; }
}