/* 落笔为证 · 稿纸绿、蓝黑墨、印泥红（只用在印章和「记录中」）*/
:root {
  --desk: #e6ebe3;
  --paper: #fbfcf8;
  --grid: #b5d2c0;
  --rule: rgba(77, 140, 108, 0.16);
  --line: #d3ddd5;
  --green: #2d6a4f;
  --green-wash: rgba(45, 106, 79, 0.08);
  --ink: #1d2840;
  --ink-soft: #5b6680;
  --muted: #5e6878;
  --paste: rgba(240, 199, 94, 0.45);
  --paste-solid: #e9bd4f;
  --erase: #9aa0a8;
  --seal: #b8352a;
  --seal-text: #b8352a;
  --seal-ink: #fbf4ee;
  --unknown: rgba(120, 128, 140, 0.22);
  --shadow: 0 1px 0 var(--line), 0 18px 40px -28px rgba(29, 40, 64, 0.35);

  --font-kai: "Kaiti SC", "STKaiti", "KaiTi", "楷体", "BiauKai", serif;
  --font-song: "Songti SC", "STSong", "SimSun", "Noto Serif CJK SC", "Source Han Serif SC", serif;
  --font-ui: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  --font-mono: "SF Mono", ui-monospace, Menlo, Consolas, monospace;

  --lh: 38px;
  color-scheme: light;
}

[data-theme="night"] {
  --desk: #0e131d;
  --paper: #151c29;
  --grid: #2c4639;
  --rule: rgba(124, 196, 160, 0.1);
  --line: #263042;
  --green: #7cc4a0;
  --green-wash: rgba(124, 196, 160, 0.1);
  --ink: #dce2ec;
  --ink-soft: #9aa6ba;
  --muted: #8c96a6;
  --paste: rgba(233, 189, 79, 0.26);
  --erase: #6b7280;
  --seal-text: #f08a7e;
  --unknown: rgba(150, 160, 175, 0.2);
  --shadow: 0 1px 0 var(--line), 0 18px 40px -28px rgba(0, 0, 0, 0.6);
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  min-height: 100vh;
  background: var(--desk);
  color: var(--ink);
  font: 15px/1.6 var(--font-ui);
  font-variant-numeric: tabular-nums;
}
button, input, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }
:focus-visible { outline: 2px solid var(--green); outline-offset: 2px; }
[hidden] { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.muted { color: var(--muted); }
.small { font-size: 12.5px; }

/* ---------- 顶栏（顶栏、警示条、查看横幅一起吸顶）---------- */
.top { position: sticky; top: 0; z-index: 10; }
.bar {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 10px clamp(16px, 4vw, 40px);
  background: color-mix(in srgb, var(--desk) 92%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.mark {
  margin: 0;
  font: 400 24px/1 var(--font-kai);
  letter-spacing: 0.12em;
}
.tabs { display: flex; gap: 4px; }
.tabs button {
  border: 0;
  background: none;
  padding: 8px 12px 6px;
  color: var(--muted);
  border-bottom: 2px solid transparent;
}
.tabs button[aria-selected="true"] { color: var(--ink); border-bottom-color: var(--green); }
.bar-end { margin-left: auto; display: flex; align-items: center; gap: 14px; }
.rec { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; color: var(--muted); }
.rec i { width: 8px; height: 8px; border-radius: 50%; background: var(--seal); animation: pulse 2.4s ease-in-out infinite; }
.rec.off { color: var(--seal-text); }
.rec.off i { animation: none; background: var(--muted); }
@keyframes pulse { 50% { opacity: 0.35; } }

/* ---------- 按钮 ---------- */
.ghost, .primary, .speeds button {
  border-radius: 6px;
  padding: 7px 14px;
  border: 1px solid var(--line);
  background: transparent;
  line-height: 1.3;
}
.ghost:hover, .speeds button:hover { background: var(--green-wash); }
.ghost.small { padding: 4px 10px; font-size: 13px; }
.ghost.danger { color: var(--seal-text); }
.primary { background: var(--green); border-color: var(--green); color: var(--paper); }
.primary:hover { filter: brightness(1.08); }

/* ---------- 横幅与提示 ---------- */
.alert {
  display: flex;
  align-items: center;
  gap: 16px;
  justify-content: center;
  padding: 10px 20px;
  background: var(--seal);
  color: var(--seal-ink);
  font-size: 14px;
}
.alert p { margin: 0; }
.alert .ghost { border-color: currentColor; }
.banner {
  display: flex;
  align-items: center;
  gap: 16px;
  justify-content: center;
  padding: 10px 20px;
  background: color-mix(in srgb, var(--paste-solid) 32%, var(--desk));
  font-size: 14px;
}
.banner p { margin: 0; }
.banner:focus { outline: none; }
.toast {
  position: fixed;
  left: 50%;
  bottom: 28px;
  transform: translate(-50%, 12px);
  max-width: min(560px, calc(100vw - 32px));
  padding: 10px 18px;
  border-radius: 6px;
  background: var(--ink);
  color: var(--paper);
  font-size: 14px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s, transform 0.2s;
  z-index: 30;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }

/* ---------- 纸 ---------- */
main { padding: 28px clamp(0px, 3vw, 32px) 64px; }
.view { max-width: 820px; margin: 0 auto; }
.paper { background: var(--paper); box-shadow: var(--shadow); border-radius: 3px; }

.intro {
  margin: 0 0 20px;
  padding: 20px 28px 22px;
  background: var(--paper);
  border-left: 3px solid var(--green);
  box-shadow: var(--shadow);
}
.intro-title { margin: 0 0 8px; font: 20px/1.4 var(--font-kai); }
.intro ul { margin: 0 0 16px; padding-left: 1.2em; color: var(--ink-soft); }
.intro li + li { margin-top: 4px; }

/* ---------- 码字本 ---------- */
.title {
  display: block;
  width: 100%;
  padding: 32px 52px 14px;
  border: 0;
  border-bottom: 1px solid var(--grid);
  background: transparent;
  font: 26px/1.3 var(--font-kai);
  letter-spacing: 0.04em;
  outline: none;
}
.title::placeholder, .editor::placeholder { color: var(--muted); opacity: 0.6; }
.editor {
  display: block;
  width: 100%;
  min-height: 62vh;
  padding: 18px 52px 56px;
  border: 0;
  outline: none;
  resize: none;
  overflow: hidden;
  background: transparent;
  background-image: linear-gradient(to bottom, transparent calc(var(--lh) - 1px), var(--rule) calc(var(--lh) - 1px));
  background-size: 100% var(--lh);
  background-position: 0 18px;
  background-attachment: local;
  font: 19px/var(--lh) var(--font-song);
  letter-spacing: 0.02em;
  caret-color: var(--green);
}
.editor[data-font="kai"] { font-family: var(--font-kai); font-size: 20px; }
.status {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 16px;
  padding: 14px 4px;
  color: var(--muted);
  font-size: 13px;
}
.status .spacer { flex: 1; }

/* ---------- 回放 ---------- */
.replay-caption { margin: 0 0 10px; padding: 0 4px; font: 18px/1.4 var(--font-kai); color: var(--ink-soft); }
.sheetwrap { position: relative; }
#sheet { display: block; width: 100%; height: min(66vh, 700px); border-radius: 3px; }
.overlay { position: absolute; inset: 0; display: grid; place-items: center; margin: 0; padding: 24px; text-align: center; color: var(--muted); background: var(--paper); }
.controls { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 18px; padding: 18px 4px 6px; }
.speeds { display: inline-flex; }
.speeds button { border-radius: 0; margin-left: -1px; padding: 6px 12px; font-size: 14px; }
.speeds button:first-child { border-radius: 6px 0 0 6px; margin-left: 0; }
.speeds button:last-child { border-radius: 0 6px 6px 0; }
.speeds button[aria-checked="true"] { background: var(--ink); border-color: var(--ink); color: var(--paper); position: relative; }
.toggle { display: inline-flex; align-items: center; gap: 6px; font-size: 14px; color: var(--ink-soft); cursor: pointer; }
.toggle input { accent-color: var(--green); width: 16px; height: 16px; }
#scrub { width: 100%; margin: 10px 0 4px; accent-color: var(--green); }
.hud { display: flex; flex-wrap: wrap; gap: 4px 18px; margin: 0; padding: 0 4px; font-size: 13px; color: var(--muted); }
.hud #hud-time { color: var(--ink); font-family: var(--font-mono); font-size: 12.5px; }
.legend { display: flex; flex-wrap: wrap; gap: 6px 18px; margin: 18px 0 0; padding: 14px 4px 0; border-top: 1px solid var(--line); list-style: none; font-size: 12.5px; color: var(--muted); }
.legend li { display: inline-flex; align-items: center; gap: 6px; }
.sw { display: inline-block; width: 14px; height: 14px; border: 1px solid var(--grid); background: var(--paper); position: relative; }
.sw-ink::after { content: "字"; position: absolute; inset: 0; font: 11px/12px var(--font-kai); text-align: center; color: var(--ink); }
.sw-paste { background: var(--paste); }
.sw-chunk { background-image: radial-gradient(circle, var(--green) 0.8px, transparent 1px); background-size: 4px 4px; background-position: 0 10px; background-repeat: repeat-x; }
.sw-unknown { background: var(--unknown); }
.sw-erase::after { content: ""; position: absolute; left: 2px; right: 2px; top: 6px; height: 1.5px; background: var(--erase); }

/* ---------- 报告 ---------- */
.report-actions { margin-bottom: 16px; }
.export-row { display: flex; flex-wrap: wrap; gap: 10px; }
.report-actions p { margin: 8px 0 0; max-width: 46em; }
.warn { margin: 0 0 20px; padding: 12px 16px; background: var(--seal); color: var(--seal-ink); font-size: 15px; }
.checks .check { margin-top: 16px; padding: 14px 16px; border: 1px solid var(--line); }
.check-title { margin: 0 0 2px; font-weight: 600; }
.check-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 10px; }
.check-col { display: flex; flex-direction: column; align-items: flex-start; gap: 8px; margin-top: 10px; }
.check-input { flex: 1; min-width: 200px; padding: 7px 10px; border: 1px solid var(--line); border-radius: 6px; background: var(--paper); font-family: var(--font-mono); }
.check-text { width: 100%; padding: 8px 10px; border: 1px solid var(--line); border-radius: 6px; background: var(--paper); font: 14px/1.6 var(--font-song); resize: vertical; }
.check-out { margin: 8px 0 0; font-size: 14px; }
.check-out:empty { display: none; }
.check-out.ok { color: var(--green); }
.check-out.bad { color: var(--seal-text); }
.sheet { background: var(--paper); box-shadow: var(--shadow); padding: clamp(28px, 6vw, 56px) clamp(20px, 6vw, 60px); border-radius: 3px; }
.eyebrow { margin: 0 0 6px; font-size: 12px; letter-spacing: 0.24em; color: var(--green); }
.sheet-title { margin: 0 0 6px; font: 400 34px/1.25 var(--font-kai); letter-spacing: 0.03em; }
.sheet-head { padding-bottom: 20px; border-bottom: 1px solid var(--grid); }
.sheet-head p { margin: 0; }
.note { margin: 18px 0 0; padding: 10px 14px; background: var(--green-wash); font-size: 14px; color: var(--ink-soft); }
.lead { margin: 22px 0 26px; font: 19px/1.85 var(--font-song); }
.figs { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; margin: 0; border-top: 1px solid var(--line); }
.fig { padding: 16px 16px 16px 0; border-bottom: 1px solid var(--line); }
.fig dt { font-size: 13px; color: var(--muted); }
.fig dd { margin: 4px 0 2px; font: 25px/1.25 var(--font-song); }
.fig small { color: var(--muted); font-size: 12px; }
.block { margin-top: 34px; }
.block h3, .limits h3 { margin: 0 0 12px; font: 400 19px/1.4 var(--font-kai); letter-spacing: 0.04em; }
.srcbar { display: flex; height: 14px; border-radius: 7px; overflow: hidden; background: var(--line); }
.seg { min-width: 3px; }
.seg-typed { background: var(--ink); }
.seg-v { background: var(--green); }
.seg-p { background: var(--paste-solid); }
.seg-other { background: var(--erase); }
.srclegend { display: flex; flex-wrap: wrap; gap: 6px 22px; margin: 12px 0 0; padding: 0; list-style: none; font-size: 14px; }
.srclegend .dot { display: inline-block; width: 10px; height: 10px; border-radius: 50%; margin-right: 6px; vertical-align: -1px; }
.srclegend small { color: var(--muted); }
.timeline { display: block; width: 100%; height: auto; margin: 4px 0 6px; background-image: linear-gradient(var(--rule) 1px, transparent 1px), linear-gradient(90deg, var(--rule) 1px, transparent 1px); background-size: 20px 20px; }
.timeline .gridline { stroke: var(--line); stroke-width: 1; }
.timeline .axis { font: 11px var(--font-ui); fill: var(--muted); }
.timeline .curve { fill: none; stroke: var(--ink); stroke-width: 2; stroke-linejoin: round; }
.timeline .session { stroke: var(--green); stroke-width: 1; stroke-dasharray: 4 4; }
.timeline .pastemark { fill: var(--paste-solid); stroke: #a87d1c; stroke-width: 1; }
.facts { margin: 10px 0 0; padding-left: 1.2em; color: var(--ink-soft); }
.facts li + li { margin-top: 4px; }
.sessions { width: 100%; border-collapse: collapse; font-size: 14px; }
.sessions th { text-align: left; font-weight: 400; color: var(--muted); font-size: 13px; }
.sessions th, .sessions td { padding: 8px 12px 8px 0; border-bottom: 1px solid var(--line); }
.limits { display: grid; grid-template-columns: 1fr 1fr; gap: 0; border: 1px solid var(--grid); }
.limits > div { padding: 18px 20px; }
.limits > div + div { border-left: 1px solid var(--grid); }
.limits p { margin: 0; font-size: 14.5px; color: var(--ink-soft); line-height: 1.8; }
.sheet-foot { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; margin-top: 40px; padding-top: 24px; border-top: 1px solid var(--grid); }
.foot-text p { margin: 0 0 4px; }
.code { font: 19px/1.4 var(--font-mono); letter-spacing: 0.08em; }
.verify { font-size: 14px; margin-top: 8px !important; }
.verify.ok { color: var(--green); }
.verify.bad { color: var(--seal-text); }
.seal { width: 112px; flex: none; transform: rotate(-4deg); opacity: 0.93; }
.seal-field { fill: var(--seal); }
.seal-glyph { fill: var(--seal-ink); font: 700 40px var(--font-kai); }
.seal-code { fill: var(--seal); font: 10px var(--font-mono); letter-spacing: 0.04em; }
.empty { padding: 64px 24px; text-align: center; background: var(--paper); box-shadow: var(--shadow); }
.empty p { margin: 0 0 6px; }

/* ---------- 章节抽屉 ---------- */
.backdrop { position: fixed; inset: 0; z-index: 19; background: rgba(14, 19, 29, 0.28); }
.drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  z-index: 20;
  width: min(360px, 100vw);
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 20px;
  background: var(--paper);
  border-left: 1px solid var(--line);
  box-shadow: -18px 0 40px -28px rgba(29, 40, 64, 0.4);
}
.drawer-head { display: flex; align-items: center; justify-content: space-between; }
.drawer-title { margin: 0; font: 20px var(--font-kai); }
.doc-list { flex: 1; overflow: auto; margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
.doc-list li { display: flex; align-items: center; gap: 8px; border-bottom: 1px solid var(--line); }
.doc-list li.current { background: var(--green-wash); }
.doc-list li.muted { padding: 16px 4px; }
.doc-open { flex: 1; display: flex; flex-direction: column; align-items: flex-start; gap: 2px; padding: 10px 6px; border: 0; background: none; text-align: left; }
.doc-title { font: 16px var(--font-kai); }
.drawer-foot { border-top: 1px solid var(--line); padding-top: 14px; }
.drawer-foot p { margin: 8px 0 0; }
.stats-toggle { margin-top: 14px; font-size: 13px; }

/* ---------- 小屏 ---------- */
@media (max-width: 640px) {
  .bar { gap: 12px; flex-wrap: wrap; }
  .mark { font-size: 20px; }
  .tabs { order: 3; width: 100%; justify-content: space-between; }
  .tabs button { flex: 1; }
  main { padding-top: 12px; }
  .paper, .sheet, .intro, .empty { border-radius: 0; }
  .title { padding: 22px 20px 12px; font-size: 22px; }
  .editor { padding: 14px 20px 48px; font-size: 18px; }
  .status, .controls, .hud, .legend { padding-left: 16px; padding-right: 16px; }
  .figs { grid-template-columns: repeat(2, 1fr); }
  .limits { grid-template-columns: 1fr; }
  .limits > div + div { border-left: 0; border-top: 1px solid var(--grid); }
  .sheet-foot { flex-direction: column-reverse; align-items: flex-start; }
  .report-actions { padding: 0 16px; }
  .timeline .axis { font-size: 20px; }
  .alert, .banner { flex-wrap: wrap; }
}

@media (prefers-reduced-motion: reduce) {
  .rec i { animation: none; }
  .toast { transition: none; }
}

@media print {
  :root, [data-theme="night"] {
    --paper: #fff; --desk: #fff; --ink: #1d2840; --ink-soft: #5b6680; --muted: #5e6878;
    --green: #2d6a4f; --line: #d3ddd5; --grid: #b5d2c0; --rule: rgba(77, 140, 108, 0.16);
    --seal-text: #b8352a; --green-wash: rgba(45, 106, 79, 0.08);
    color-scheme: light;
  }
  .top, .report-actions, .toast, .drawer, .backdrop, #view-write, #view-replay, .checks { display: none !important; }
  .warn { print-color-adjust: exact; -webkit-print-color-adjust: exact; }
  body { background: #fff; }
  main { padding: 0; }
  .sheet { box-shadow: none; padding: 0; }
}