:root {
  --bg: #d9c4a0;
  --bg-2: #cbb489;
  --ink: #3b2a14;
  --muted: #6b5438;
  --dim: #8a7358;
  --line: #3b2a14;
  --stamp: #9a3b2a;
  --label: #f3e6c8;
  --label-2: #efe0c0;
  --ok: #2f5d32;
  --bad: #9a3b2a;
  --tape: #9a3b2a;
  --sans: "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Source Han Sans SC", ui-sans-serif, system-ui, sans-serif;
  --serif: "Songti SC", "STSong", "Noto Serif CJK SC", "Source Han Serif SC", Georgia, serif;
  --mono: "SFMono-Regular", "Menlo", "Courier New", ui-monospace, monospace;
  --page: min(44rem, calc(100vw - 2.4rem));
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background-color: var(--bg);
  background-image:
    repeating-linear-gradient(
      90deg,
      transparent 0 46px,
      rgba(59, 42, 20, 0.07) 46px 48px
    ),
    repeating-linear-gradient(
      180deg,
      rgba(155, 59, 42, 0.05) 0 2px,
      transparent 2px 9px
    );
  font: 16px/1.75 var(--sans);
  text-rendering: optimizeLegibility;
}
body::before,
body::after {
  content: "";
  position: fixed;
  top: 0;
  bottom: 0;
  width: 18px;
  background: repeating-linear-gradient(
    180deg,
    #b08958 0 28px,
    #9a7344 28px 30px
  );
  box-shadow: inset 0 0 0 1px rgba(59, 42, 20, 0.35);
  pointer-events: none;
  z-index: 15;
}
body::before { left: 0; }
body::after { right: 0; }

button, input, textarea, select { font: inherit; color: inherit; }
a { color: var(--stamp); text-underline-offset: 0.18em; }
a:hover { color: var(--ink); }
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--stamp);
  outline-offset: 3px;
}

.skip {
  position: absolute;
  left: 28px;
  top: 10px;
  z-index: 30;
  padding: 8px 12px;
  background: var(--stamp);
  color: var(--label);
  transform: translateY(-160%);
}
.skip:focus { transform: none; }

.top {
  position: sticky;
  top: 0;
  z-index: 12;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 12px;
  padding: 10px 4vw;
  background: color-mix(in srgb, var(--bg) 86%, transparent);
  border-bottom: 4px solid var(--tape);
  backdrop-filter: blur(10px);
}
.home,
.crate-no {
  font: 700 12px/1 var(--mono);
  letter-spacing: 0.08em;
  text-decoration: none;
  color: var(--ink);
}
.home { justify-self: start; }
.crate-no {
  justify-self: center;
  margin: 0;
  padding: 6px 10px;
  background: var(--label);
  border: 1px dashed var(--ink);
}
.sits {
  justify-self: end;
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.sits a {
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  text-decoration: none;
  color: var(--ink);
  border: 1px solid var(--ink);
  font: 700 12px/1 var(--mono);
  background: var(--label);
}
.sits a[aria-current="page"],
.sits a.is-here {
  background: var(--stamp);
  color: var(--label);
  border-color: var(--stamp);
}

main { width: var(--page); margin: 0 auto; padding: 2.8rem 0 4.5rem; }

.kicker {
  margin: 0 0 10px;
  color: var(--stamp);
  font: 700 11px/1.4 var(--mono);
  letter-spacing: 0.14em;
}
.hero h1,
.teach h2,
.work h2 {
  margin: 0 0 16px;
  font: 700 clamp(28px, 6vw, 42px)/1.2 var(--serif);
  letter-spacing: -0.02em;
  text-wrap: balance;
}
.lede,
.teach p,
.work > p,
.catch,
.next p {
  margin: 0 0 16px;
  color: var(--ink);
  font-size: 17px;
  line-height: 1.85;
  text-wrap: pretty;
}
.teach p,
.work > p { color: var(--ink); }
.muted { color: var(--muted); }

.hero { padding-bottom: 2rem; }
.pack {
  display: grid;
  gap: 10px;
  margin: 28px 0 0;
}
.pack a {
  display: grid;
  grid-template-columns: 4.2rem 1fr auto;
  gap: 14px;
  align-items: center;
  padding: 14px 16px;
  text-decoration: none;
  color: var(--ink);
  background: var(--label);
  border: 1px dashed var(--ink);
  box-shadow: 3px 3px 0 rgba(154, 59, 42, 0.28);
}
.pack a:hover { transform: translate(-1px, -1px); box-shadow: 4px 4px 0 rgba(154, 59, 42, 0.4); }
.pack .no {
  font: 700 22px/1 var(--mono);
  letter-spacing: 0.12em;
  color: var(--stamp);
}
.pack b { font: 700 18px/1.3 var(--serif); }
.pack em {
  font-style: normal;
  color: var(--muted);
  font: 12px/1.4 var(--mono);
}

.hero-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 28px;
  margin-top: 22px;
}

.teach, .work { padding-top: 1.8rem; }
.work {
  margin-top: 1.2rem;
  padding: 22px 20px 24px;
  background: var(--label);
  border: 2px solid var(--ink);
  position: relative;
}
.work::before {
  content: "装箱单";
  position: absolute;
  top: -11px;
  left: 14px;
  padding: 0 8px;
  background: var(--label);
  font: 700 11px/1 var(--mono);
  letter-spacing: 0.12em;
  color: var(--stamp);
}

.table-wrap { overflow-x: auto; }
.inventory {
  width: 100%;
  border-collapse: collapse;
  font: 13px/1.45 var(--mono);
  margin: 12px 0 16px;
}
.inventory th,
.inventory td {
  border: 1px solid var(--ink);
  padding: 8px 8px;
  text-align: left;
  vertical-align: top;
  background: var(--label-2);
}
.inventory th {
  background: #e4d3ae;
  font-weight: 700;
}
.inventory select {
  width: 100%;
  min-height: 36px;
  background: var(--label);
  border: 1px solid var(--ink);
  padding: 4px;
}
.inventory tr.is-unknown td { background: #ead7b0; }
.inventory tr.is-conflict td { background: #e8c8b8; }
.inventory tr.is-ok td { background: #dce6c8; }

.paths {
  display: grid;
  gap: 14px;
}
.path-card {
  padding: 14px;
  border: 1px dashed var(--ink);
  background: var(--label-2);
}
.path-card h3 {
  margin: 0 0 8px;
  font: 700 16px/1.3 var(--serif);
}
.path-card p { margin: 0 0 10px; font-size: 15px; }
.path-card fieldset {
  border: 0;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 6px;
}
.path-card legend {
  padding: 0;
  margin-bottom: 6px;
  font: 700 11px/1.4 var(--mono);
  letter-spacing: 0.08em;
  color: var(--stamp);
}
.path-card label { cursor: pointer; display: flex; gap: 8px; align-items: flex-start; }
.path-card input { margin-top: 4px; accent-color: var(--stamp); }

.runbook {
  margin: 0 0 16px;
  padding: 0;
  list-style: none;
  font: 14px/1.5 var(--mono);
}
.runbook li {
  display: grid;
  grid-template-columns: 4.5rem 1fr;
  gap: 10px;
  padding: 10px 8px;
  border-top: 1px dashed var(--ink);
}
.runbook li:first-child { border-top: 0; }
.runbook .t { color: var(--stamp); font-weight: 700; }
.runbook .hole {
  background: repeating-linear-gradient(
    -45deg,
    transparent,
    transparent 6px,
    rgba(154, 59, 42, 0.12) 6px,
    rgba(154, 59, 42, 0.12) 7px
  );
  outline: 2px dashed var(--stamp);
}
.runbook li.is-done { opacity: 0.72; }
.runbook li.is-now { background: #ead7b0; }

.clock-strip {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
  font: 700 13px/1 var(--mono);
  letter-spacing: 0.06em;
}
.clock-strip b { color: var(--stamp); }

.inserts, .moves, .exits {
  display: grid;
  gap: 8px;
  margin: 12px 0;
}
.inserts button,
.moves button,
.exits button,
.work button[type="button"],
.work button[type="submit"] {
  min-height: 44px;
  padding: 10px 14px;
  text-align: left;
  border: 1px solid var(--ink);
  background: var(--label);
  cursor: pointer;
}
.inserts button:hover,
.moves button:hover,
.work button:hover {
  background: var(--bg-2);
}
button[disabled] { opacity: 0.45; cursor: not-allowed; }
button.is-picked { border-width: 2px; background: #ead7b0; }
button.is-bad { border-color: var(--bad); color: var(--bad); }
button.is-ok { border-color: var(--ok); color: var(--ok); }

.books {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin: 12px 0 16px;
}
.book {
  border: 1px solid var(--ink);
  padding: 14px;
  background: var(--label-2);
  font: 13px/1.5 var(--mono);
}
.book h3 {
  margin: 0 0 8px;
  font: 700 14px/1 var(--mono);
  letter-spacing: 0.08em;
}
.book dl { margin: 0; display: grid; gap: 6px; }
.book div { display: grid; grid-template-columns: 5.5rem 1fr; gap: 8px; }
.book dt { color: var(--muted); }
.book dd { margin: 0; font-weight: 700; }
.book.is-gap { outline: 2px solid var(--stamp); }

.status-picks { display: grid; gap: 8px; margin: 8px 0 14px; }
.status-picks label {
  display: flex;
  gap: 8px;
  padding: 10px 12px;
  border: 1px solid var(--ink);
  background: var(--label-2);
  cursor: pointer;
}
.status-picks input { accent-color: var(--stamp); margin-top: 4px; }

.exits label {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  padding: 10px 12px;
  border: 1px dashed var(--ink);
  background: var(--label-2);
  cursor: pointer;
}
.exits label input { margin-top: 5px; accent-color: var(--stamp); }

.verdict {
  margin: 14px 0 0;
  padding: 12px 14px 12px 16px;
  border-left: 6px solid var(--stamp);
  background: var(--bg);
  min-height: 3em;
}
.verdict.is-ok { border-color: var(--ok); }
.verdict.is-bad { border-color: var(--bad); }
.verdict[hidden] { display: none; }

.stamp-mark {
  position: absolute;
  top: 18px;
  right: 16px;
  width: 88px;
  height: 88px;
  border: 3px solid var(--stamp);
  border-radius: 50%;
  color: var(--stamp);
  display: grid;
  place-items: center;
  text-align: center;
  font: 700 14px/1.2 var(--mono);
  letter-spacing: 0.08em;
  transform: rotate(12deg);
  background: color-mix(in srgb, var(--label) 70%, transparent);
}
.stamp-mark[hidden] { display: none; }

.next {
  margin-top: 2.4rem;
  padding-top: 1.4rem;
  border-top: 1px dashed var(--ink);
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.next a {
  font: 700 13px/1 var(--mono);
  letter-spacing: 0.06em;
  text-decoration: none;
  color: var(--ink);
  padding: 8px 0;
}

.labs {
  margin-top: 1.6rem;
  padding: 14px 16px;
  border: 1px dashed var(--ink);
  background: color-mix(in srgb, var(--label) 70%, transparent);
  font-size: 15px;
}
.labs p { margin: 0 0 8px; }
.labs a { margin-right: 16px; }

.foot {
  width: var(--page);
  margin: 0 auto;
  padding: 22px 0 48px;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  border-top: 4px solid var(--tape);
  color: var(--muted);
  font: 13px/1.5 var(--mono);
}
.foot strong { color: var(--ink); }
.foot a { text-decoration: none; font-weight: 700; }

.catch {
  padding: 10px 12px;
  background: var(--bg);
  border-left: 4px solid var(--stamp);
  font-size: 15px;
}

@media (max-width: 720px) {
  :root { --page: calc(100vw - 2.2rem); }
  body::before, body::after { width: 8px; }
  .top { grid-template-columns: 1fr auto; }
  .crate-no { display: none; }
  .books { grid-template-columns: 1fr; }
  .pack a { grid-template-columns: 3rem 1fr; }
  .inventory { font-size: 12px; display: block; overflow-x: auto; }
  .foot { flex-direction: column; }
  .stamp-mark { width: 68px; height: 68px; font-size: 11px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .pack a:hover, .stamp-mark { transform: none; }
}

@media print {
  .top, .skip, .inserts, .moves, .foot { display: none !important; }
  body, .work { background: #fff; }
  body::before, body::after { display: none; }
}