@font-face {
  font-family: "IBM Plex Mono";
  src: url("../fonts/IBMPlexMono-Regular.ttf") format("truetype");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "IBM Plex Mono";
  src: url("../fonts/IBMPlexMono-Medium.ttf") format("truetype");
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}

:root {
  --desk: #d7c7ae;
  --paper: #f4ecdc;
  --paper-2: #fff9ee;
  --ink: #21180f;
  --quiet: #5e5348;
  --rule: rgba(33, 24, 15, 0.28);
  --rule-strong: rgba(33, 24, 15, 0.72);
  --carbon: #1d3c66;
  --seal: #7a291f;
  --done: #1d5c3a;
  --sans: "Noto Sans CJK SC", "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  --mono: "IBM Plex Mono", "Noto Sans CJK SC", "PingFang SC", ui-monospace, monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--desk);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }
button, select { font: inherit; color: inherit; }
:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 3px;
}
::selection { background: #e7c3b8; color: var(--ink); }

.skip {
  position: absolute;
  left: 12px;
  top: 0;
  transform: translateY(-120%);
  background: var(--ink);
  color: var(--paper);
  padding: 8px 12px;
  z-index: 20;
  text-decoration: none;
}
.skip:focus { transform: none; }

.page {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 22px 0 72px;
  min-width: 0;
}

.mast {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 18px 28px;
  align-items: end;
  padding-bottom: 14px;
  border-bottom: 3px solid var(--ink);
  box-shadow: 0 1px 0 var(--ink);
}
.brand {
  display: flex;
  gap: 10px;
  align-items: center;
  text-decoration: none;
}
.brand img {
  width: 36px;
  height: 36px;
  aspect-ratio: 1 / 1;
}
.brand-name {
  margin: 0;
  font-size: 22px;
  line-height: 1;
  font-weight: 700;
  letter-spacing: -0.03em;
}
.brand-rev {
  margin: 3px 0 0;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--quiet);
}
.mast nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  justify-content: flex-end;
}
.mast nav a {
  text-decoration: none;
  font-size: 15px;
}
.mast nav a:hover { text-decoration: underline; text-underline-offset: 0.22em; }
.home-link {
  justify-self: end;
  text-decoration: none;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  border-bottom: 1px solid var(--ink);
  padding-bottom: 2px;
  white-space: nowrap;
}
.home-link:hover { background: var(--ink); color: var(--paper); }

.hero { padding: 54px 0 18px; }
.kicker {
  margin: 0 0 18px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--quiet);
}
h1 {
  margin: 0;
  max-width: 9em;
  font-size: clamp(52px, 8.4vw, 104px);
  line-height: 0.92;
  font-weight: 700;
  letter-spacing: -0.045em;
}
h1 .no {
  color: var(--seal);
}
.lede {
  max-width: 38em;
  margin: 28px 0 0;
  font-size: 18px;
  line-height: 1.7;
}
.cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
  align-items: center;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  background: var(--ink);
  color: var(--paper);
  text-decoration: none;
  border: 2px solid var(--ink);
  font-weight: 700;
  letter-spacing: 0.01em;
}
.btn:hover { background: var(--seal); border-color: var(--seal); }
.btn.ghost {
  background: transparent;
  color: var(--ink);
}
.btn.ghost:hover { background: var(--ink); color: var(--paper); }
.fine {
  margin: 14px 0 0;
  max-width: 40em;
  color: var(--quiet);
  font-size: 14px;
  line-height: 1.55;
}
.plate {
  margin: 42px 0 0;
}
.plate img {
  width: 100%;
  height: auto;
  aspect-ratio: 2400 / 780;
  background: var(--paper);
  border: 2px solid var(--ink);
}
.plate figcaption {
  margin-top: 10px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.03em;
  color: var(--quiet);
}

.block { padding: 72px 0 0; }
.block h2 {
  margin: 0;
  font-size: clamp(32px, 4vw, 48px);
  line-height: 1.05;
  letter-spacing: -0.04em;
  font-weight: 700;
}
.index {
  margin: 0 0 10px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--seal);
}
.deck {
  max-width: 40em;
  margin: 16px 0 0;
  color: var(--ink);
}

.sheet {
  margin-top: 28px;
  background: var(--paper);
  border: 2px solid var(--ink);
  padding: 22px 22px 18px;
}
.sheet-top {
  display: flex;
  justify-content: space-between;
  gap: 16px 24px;
  align-items: baseline;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--rule-strong);
}
.sheet-top p { margin: 0; }
.status {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.status strong { font-weight: 500; }
.status.is-done { color: var(--done); }
.queue {
  display: flex;
  gap: 8px;
  align-items: flex-start;
  font-size: 14px;
  line-height: 1.45;
  max-width: 22em;
}
.queue input { margin-top: 4px; accent-color: var(--seal); }

.parties {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  margin-top: 8px;
}
.party {
  padding: 18px 16px 16px;
  min-width: 0;
}
.party + .party { border-left: 1px dashed var(--rule-strong); }
.party.is-turn { background: var(--paper-2); }
.role {
  margin: 0;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--quiet);
}
.party.is-impl .role { color: var(--carbon); }
.party.is-rev .role { color: var(--seal); }
.party-head {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  align-items: center;
  margin-top: 6px;
}
.party select {
  max-width: 100%;
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--ink);
  padding: 4px 0;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.03em;
  border-radius: 0;
}
.mark {
  margin: 8px 0 0;
  min-height: 1.4em;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--seal);
}
.mark[data-kind="turn"] { color: var(--carbon); }
.party.is-rev .mark[data-kind="turn"] { color: var(--seal); }
.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}
.actions button {
  min-height: 42px;
  padding: 0 12px;
  background: transparent;
  border: 1.5px solid var(--ink);
  cursor: pointer;
}
.actions button:hover:not(:disabled) { background: var(--ink); color: var(--paper); }
.actions button:disabled {
  cursor: not-allowed;
  color: rgba(33, 24, 15, 0.38);
  border-color: rgba(33, 24, 15, 0.28);
}
.party.is-impl .actions button.primary:not(:disabled) { border-color: var(--carbon); color: var(--carbon); }
.party.is-impl .actions button.primary:hover:not(:disabled) { background: var(--carbon); color: var(--paper); }
.party.is-rev .actions button.primary:not(:disabled) { border-color: var(--seal); color: var(--seal); }
.party.is-rev .actions button.primary:hover:not(:disabled) { background: var(--seal); color: var(--paper); }

.sheet-foot {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 18px;
  align-items: start;
  margin-top: 8px;
  padding-top: 12px;
  border-top: 1px solid var(--rule-strong);
}
.log {
  margin: 0;
  padding: 0;
  list-style: none;
  max-height: 220px;
  overflow: auto;
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.55;
  min-width: 0;
  overflow-wrap: anywhere;
}
.log li { padding: 3px 0; border-bottom: 1px solid var(--rule); }
.log .n { color: var(--quiet); margin-right: 8px; }
.seal-slot {
  width: 92px;
  height: 92px;
  display: grid;
  place-items: center;
}
.seal {
  width: 84px;
  height: 84px;
  border: 3px solid var(--done);
  border-radius: 50%;
  color: var(--done);
  display: grid;
  place-items: center;
  font-weight: 700;
  letter-spacing: 0.14em;
  transform: rotate(-12deg);
}
.seal[hidden] { display: none; }
.reset {
  margin-top: 14px;
  background: none;
  border: 0;
  padding: 0;
  text-decoration: underline;
  text-underline-offset: 0.2em;
  cursor: pointer;
  font-family: var(--mono);
  font-size: 13px;
}

.table-head, .actors li {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr;
  gap: 12px;
}
.table-head {
  margin: 28px 0 0;
  padding-bottom: 8px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--quiet);
}
.actors { list-style: none; margin: 0; padding: 0; }
.actors li {
  padding: 16px 0;
  border-top: 1px solid var(--rule-strong);
  align-items: baseline;
}
.actors .who { font-size: 22px; font-weight: 700; letter-spacing: -0.03em; }
.actors .cmd, .actors .how {
  font-family: var(--mono);
  font-size: 15px;
}
.note {
  margin: 14px 0 0;
  max-width: 44em;
  color: var(--quiet);
  font-size: 15px;
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 36px;
  margin-top: 28px;
  align-items: start;
}
.split p { margin: 0 0 14px; }
.tree {
  margin: 0;
  padding: 18px 18px 16px;
  background: var(--paper);
  border: 1.5px solid var(--ink);
  overflow-x: auto;
  max-width: 100%;
  min-width: 0;
  font-family: var(--mono);
  font-size: 13.5px;
  line-height: 1.55;
}

.swatches {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 14px 12px;
}
.swatches li { width: 112px; }
.swatches i {
  display: block;
  height: 36px;
  background: var(--surface);
  box-shadow: inset 10px 0 0 var(--accent), inset 0 0 0 1px rgba(33, 24, 15, 0.35);
}
.swatches span {
  display: block;
  margin-top: 5px;
  font-family: var(--mono);
  font-size: 11px;
  line-height: 1.35;
  letter-spacing: 0.01em;
}

.steps {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  counter-reset: step;
}
.steps li {
  counter-increment: step;
  position: relative;
  padding: 18px 0 18px 72px;
  border-top: 1px solid var(--rule-strong);
  max-width: 46em;
}
.steps li::before {
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 18px;
  font-family: var(--mono);
  font-size: 20px;
  letter-spacing: 0.04em;
  color: var(--seal);
}
.steps a { text-underline-offset: 0.18em; }
.steps code, p code, .note code {
  font-family: var(--mono);
  font-size: 0.92em;
  overflow-wrap: anywhere;
}

.bounds {
  margin: 22px 0 0;
  padding: 0;
  max-width: 44em;
}
.bounds li { margin: 10px 0; }

.colophon {
  margin-top: 72px;
  padding-top: 18px;
  border-top: 3px solid var(--ink);
  box-shadow: inset 0 1px 0 var(--ink);
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  justify-content: space-between;
  align-items: baseline;
}
.colophon p { margin: 0; }
.links { display: flex; flex-wrap: wrap; gap: 8px 16px; }
.links a { text-underline-offset: 0.18em; }
.quiet { color: var(--quiet); font-family: var(--mono); font-size: 12px; }

@media (max-width: 800px) {
  .mast {
    grid-template-columns: 1fr auto;
  }
  .mast nav { grid-column: 1 / -1; justify-content: flex-start; }
  .parties, .split, .sheet-foot, .table-head, .actors li {
    grid-template-columns: 1fr;
  }
  .party + .party { border-left: 0; border-top: 1px dashed var(--rule-strong); }
  .table-head { display: none; }
  .actors .cmd::before { content: "命令 "; color: var(--quiet); }
  .actors .how::before { content: "续接 "; color: var(--quiet); }
  .sheet-foot { grid-template-columns: 1fr auto; }
  h1 { max-width: none; }
}

@media (max-width: 640px) {
  .mast {
    grid-template-columns: 1fr;
    align-items: start;
  }
  .home-link { justify-self: start; }
}
@media (max-width: 560px) {
  .page { width: min(1120px, calc(100% - 24px)); }
  .hero { padding-top: 36px; }
  .block { padding-top: 56px; }
  .sheet { padding: 16px 14px 14px; }
  .steps li { padding-left: 48px; }
  .lede { font-size: 16.5px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .seal { transform: none; }
  *, *::before, *::after {
    animation: none !important;
    transition: none !important;
  }
}