:root {
  --ink: #1c1917;
  --ink-2: #44403c;
  --muted: #78716c;
  --line: #e7e0d6;
  --paper: #f6f1e8;
  --surface: #fffcf7;
  --accent: #9a3412;
  --teal: #1f4a45;
  --ok: #3f6b4c;
  --gold: #b0893a;
  --serif: "Songti SC", "STSong", "Noto Serif SC", serif;
  --sans: "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: auto; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.75;
}

a { color: inherit; }
button, input, textarea { font: inherit; }

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 12px 28px;
  background: rgba(246, 241, 232, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 10px; min-width: 160px; }
.brand-mark {
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  background: var(--ink);
  color: #f4ead7;
  font-family: var(--serif);
}
.brand strong { display: block; font-size: 14px; }
.brand small { color: var(--muted); font-size: 11px; }
.topnav { display: flex; gap: 20px; flex: 1; }
.topnav a { text-decoration: none; font-size: 13px; color: var(--ink-2); }
.topnav a:hover { color: var(--accent); }
.top-meta { font-size: 12px; color: var(--muted); }

.doc {
  width: min(1100px, calc(100% - 48px));
  margin: 0 auto;
  padding: 48px 0 24px;
}
.doc-head { margin-bottom: 48px; padding-bottom: 24px; border-bottom: 1px solid var(--line); }
.doc-head .meta { margin: 0 0 12px; font-size: 12px; letter-spacing: 0.08em; color: var(--accent); }
.doc-head h1 {
  margin: 0;
  font-family: var(--serif);
  font-size: 42px;
  font-weight: 600;
  line-height: 1.25;
}
.deck { margin: 14px 0 0; font-size: 18px; color: var(--ink-2); max-width: 42em; }

section { padding: 36px 0 12px; scroll-margin-top: 64px; }
.q-label {
  margin: 0 0 8px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--accent);
}
h2 {
  margin: 0 0 16px;
  font-family: var(--serif);
  font-size: 28px;
  font-weight: 600;
  line-height: 1.35;
}
.doc p { margin: 0 0 14px; max-width: 46em; color: var(--ink-2); }
.doc p strong { color: var(--ink); font-weight: 600; }

.loop {
  margin: 8px 0 20px;
  padding: 0;
  list-style: none;
  counter-reset: loop;
  max-width: 46em;
}
.loop li {
  counter-increment: loop;
  position: relative;
  padding: 12px 0 12px 48px;
  border-top: 1px solid var(--line);
  color: var(--ink-2);
}
.loop li::before {
  content: counter(loop);
  position: absolute;
  left: 0;
  top: 14px;
  width: 28px;
  height: 28px;
  border: 1px solid var(--ink);
  display: grid;
  place-items: center;
  font-size: 12px;
  font-family: var(--serif);
}
.loop strong { color: var(--ink); }

.quad { margin: 28px 0 8px; padding: 0; }
.quad figcaption {
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 10px;
}
.quad-plot {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--line);
  height: 420px;
  padding: 28px 28px 36px 56px;
}
.axis-y, .axis-y-low, .axis-x-left, .axis-x-right {
  position: absolute;
  font-size: 12px;
  color: var(--muted);
}
.axis-y { top: 8px; left: 56px; }
.axis-y-low { left: 56px; bottom: 36px; }
.axis-x-left { left: 56px; bottom: 10px; }
.axis-x-right { right: 16px; bottom: 10px; }
.quad-grid {
  position: relative;
  height: 100%;
  border-left: 1px solid #cfc6b8;
  border-bottom: 1px solid #cfc6b8;
  background:
    linear-gradient(to right, transparent 49.6%, #ddd4c6 49.6%, #ddd4c6 50.4%, transparent 50.4%),
    linear-gradient(to top, transparent 49.6%, #ddd4c6 49.6%, #ddd4c6 50.4%, transparent 50.4%);
}
.dot {
  position: absolute;
  transform: translate(-50%, 50%);
  white-space: nowrap;
  text-align: left;
}
.dot b {
  display: inline-block;
  padding: 4px 8px;
  background: var(--ink);
  color: #f4ead7;
  font-size: 12px;
  font-weight: 500;
}
.dot small { display: block; font-size: 11px; color: var(--accent); margin-top: 4px; padding-left: 2px; }
.dot.is-pick b { background: var(--accent); }
.d-plan b, .d-watch b, .d-reply b, .d-board b { background: #57534e; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  margin: 18px 0 8px;
  background: var(--surface);
}
th, td {
  border: 1px solid var(--line);
  padding: 10px 12px;
  text-align: left;
  vertical-align: top;
  color: var(--ink-2);
}
th { background: #efe7d8; color: var(--ink); font-weight: 600; }
tr.is-pick td { background: #f8efe3; color: var(--ink); }

.proto-stage {
  display: grid;
  grid-template-columns: 1fr 400px;
  gap: 24px;
  align-items: start;
  margin: 24px 0 8px;
  max-width: none;
}
.flow-steps {
  list-style: none;
  margin: 0 0 10px;
  padding: 0;
  display: grid;
  gap: 8px;
}
.flow-steps li { margin: 0; padding: 0; }
.flow-step { width: 100%; }
.flow-step {
  display: flex;
  gap: 8px;
  align-items: center;
  padding: 8px 12px;
  border: 1px solid var(--line);
  background: var(--surface);
  cursor: pointer;
  color: var(--ink-2);
  font-size: 13px;
}
.flow-step i { font-style: normal; font-family: var(--serif); color: var(--muted); }
.flow-step.is-active { background: var(--ink); color: #f4ead7; border-color: var(--ink); }
.flow-step.is-active i { color: #e8c4a8; }
.spec { margin: 0 0 12px; font-size: 14px; color: var(--ink-2); max-width: none; }

.phone-wrap { position: sticky; top: 72px; }
.phone {
  width: 372px;
  height: 780px;
  margin: 0 auto;
  background: #111;
  border-radius: 40px;
  padding: 11px;
  position: relative;
}
.phone-notch {
  position: absolute;
  top: 16px;
  left: 50%;
  width: 110px;
  height: 20px;
  transform: translateX(-50%);
  background: #111;
  border-radius: 20px;
  z-index: 3;
}
.phone-screen {
  height: 100%;
  background: #f3eee5;
  border-radius: 30px;
  overflow: hidden;
  position: relative;
}
.phone-hint { text-align: center; color: var(--muted); font-size: 12px; margin: 10px 0 0; }
.home-indicator {
  position: absolute;
  left: 50%;
  bottom: 7px;
  width: 110px;
  height: 4px;
  transform: translateX(-50%);
  background: #1c1917;
  opacity: 0.18;
  border-radius: 99px;
  pointer-events: none;
}

.wb { height: 100%; display: flex; flex-direction: column; min-height: 0; }
.wb p { max-width: none; }
.status-bar {
  display: flex;
  justify-content: space-between;
  padding: 10px 22px 0;
  font-size: 12px;
  font-weight: 600;
}
.wb-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  padding: 28px 16px 10px;
  border-bottom: 1px solid var(--line);
  background: #fffcf7;
}
.wb-head h3 { margin: 0; font-family: var(--serif); font-size: 22px; }
.wb-head p { margin: 4px 0 0; color: var(--muted); font-size: 12px; }
.back {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  border: 1px solid var(--line);
  background: #fffcf7;
  padding: 5px 10px;
  margin-bottom: 8px;
  color: var(--ink);
  cursor: pointer;
  font-size: 13px;
}
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  padding: 12px 20px 0;
}
.stat {
  border: 1px solid var(--line);
  background: #fffcf7;
  padding: 10px 12px;
  text-align: left;
  cursor: pointer;
}
.stat b { display: block; font-family: var(--serif); font-size: 22px; line-height: 1.1; }
.stat span { font-size: 12px; color: var(--muted); }
.stat.is-on { border-color: var(--ink); background: var(--ink); color: #f4ead7; }
.stat.is-on span { color: #d6cbb8; }
.tabs {
  display: flex;
  gap: 14px;
  padding: 10px 16px 0;
  border-bottom: 1px solid var(--line);
}
.tab {
  border: 0;
  background: none;
  padding: 0 0 10px;
  cursor: pointer;
  color: var(--muted);
  font-size: 13px;
  border-bottom: 2px solid transparent;
}
.tab.is-on { color: var(--ink); font-weight: 600; border-bottom-color: var(--accent); }
.tab em {
  font-style: normal;
  margin-left: 4px;
  font-size: 11px;
  color: var(--accent);
}
.wb-body { flex: 1; overflow: auto; padding: 12px 16px 18px; min-height: 0; }
.wb-body::-webkit-scrollbar { width: 8px; }
.wb-body::-webkit-scrollbar-thumb { background: #ddd4c6; }

.card {
  width: 100%;
  display: block;
  text-align: left;
  background: #fffcf7;
  border: 1px solid var(--line);
  padding: 14px 16px;
  margin-bottom: 8px;
  cursor: pointer;
  color: inherit;
}
.card:hover { border-color: #cfc6b8; }
.card.is-disabled { cursor: default; opacity: 0.92; }
.card-top, .row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
}
.who { display: flex; align-items: center; gap: 10px; min-width: 0; }
.avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: #fff;
  font-size: 13px;
  flex-shrink: 0;
}
.who b { display: block; font-size: 14px; }
.who span { font-size: 12px; color: var(--muted); }
.pill {
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 99px;
  background: #efe7d8;
  white-space: nowrap;
}
.pill-wait { background: #f3dfc8; color: var(--accent); }
.pill-ok { background: #d9eadc; color: var(--ok); }
.pill-bad { background: #f4d4d0; color: #9f1239; }
.pill-reply { background: #dce8ea; color: var(--teal); }
.pill-mute { background: #ece7dc; color: var(--muted); }
.summary { margin: 8px 0 0; font-size: 13px; color: var(--ink-2); line-height: 1.55; }
.progress {
  height: 4px;
  background: #e8dfd0;
  margin-top: 10px;
}
.progress i { display: block; height: 100%; background: var(--gold); }
.card-actions { display: flex; gap: 8px; margin-top: 10px; }
.empty { padding: 48px 16px; text-align: center; color: var(--muted); font-size: 14px; }

.sec {
  background: #fffcf7;
  border: 1px solid var(--line);
  padding: 14px 16px;
  margin-bottom: 10px;
}
.sec.gray { background: #ece7dc; }
.sec.warn { background: #f8efe3; border-color: #e2c39a; }
.sec h4 {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
}
.must { color: var(--accent); }
.facts {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}
.metric {
  display: grid;
  grid-template-columns: 72px 1fr auto;
  gap: 8px;
  align-items: start;
  padding: 10px 0;
  border-bottom: 1px solid #e4dcd0;
}
.metric:last-child { border-bottom: 0; padding-bottom: 0; }
.metric:first-child { padding-top: 0; }
.metric .lab { font-size: 12px; color: var(--muted); padding-top: 2px; }
.metric .val { font-size: 13px; color: var(--ink); line-height: 1.45; }
.metric .val small { display: block; font-size: 11px; color: var(--muted); margin-top: 2px; }
.delta {
  font-size: 11px;
  white-space: nowrap;
  padding: 3px 7px;
  border-radius: 99px;
  align-self: center;
}
.delta-up { background: #d9eadc; color: var(--ok); }
.delta-down { background: #f4d4d0; color: #9f1239; }
.delta-flat { background: #ece7dc; color: var(--muted); }
.delta-na { background: transparent; color: var(--muted); padding: 0; }
.ai-banner {
  margin-bottom: 10px;
  padding: 12px 14px;
  background: var(--ink);
  color: #f4ead7;
  border-radius: 12px;
}
.ai-banner small { opacity: 0.65; font-size: 11px; }
.ai-banner p { margin: 4px 0 0; font-size: 13px; line-height: 1.5; color: #f4ead7; }
.judge-item {
  padding: 10px 0;
  border-top: 1px solid var(--line);
}
.judge-item:first-of-type { border-top: 0; padding-top: 0; }
.judge-item p { margin: 0 0 8px; font-size: 13px; color: var(--ink-2); max-width: none; }
.judge-item textarea {
  width: 100%;
  min-height: 64px;
  border: 1px solid var(--line);
  padding: 8px;
  margin-bottom: 8px;
  background: #fffcf7;
  line-height: 1.6;
}
.ops { display: flex; gap: 8px; flex-wrap: wrap; }
.chip, .ghost, .primary, .danger {
  border: 1px solid var(--line);
  background: #fffcf7;
  padding: 6px 10px;
  font-size: 12px;
  cursor: pointer;
}
.chip.is-on, .ghost.is-on { background: var(--ink); color: #f4ead7; border-color: var(--ink); }
.chip:disabled, .ghost:disabled, .primary:disabled { opacity: 0.4; cursor: not-allowed; }
.primary { background: var(--accent); color: #fff; border-color: var(--accent); }
.primary:disabled { opacity: 0.4; cursor: not-allowed; }
.danger { color: var(--accent); }
.tags { display: flex; flex-wrap: wrap; gap: 6px; margin: 8px 0; }
.observe {
  width: 100%;
  min-height: 72px;
  border: 1px solid var(--line);
  padding: 8px 10px;
  line-height: 1.65;
  background: #fffcf7;
}
.diff { font-size: 12px; line-height: 1.6; color: var(--ink-2); }
.diff ins { background: #d9eadc; text-decoration: none; }
.diff del { background: #f4d4d0; text-decoration: line-through; color: #7f1d1d; }
.foot {
  display: flex;
  justify-content: flex-end;
  gap: 6px;
  padding: 10px 12px 22px;
  border-top: 1px solid var(--line);
  background: #fffcf7;
}
.foot-next { justify-content: flex-end; }
.foot-next .primary { min-width: 140px; }
.msg-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin: 10px 0 12px;
  padding-top: 10px;
  border-top: 1px solid var(--line);
}
.foot-spacer { flex: 1; }
.next-card {
  margin-top: 12px;
  padding: 14px;
  background: var(--ink);
  color: #f4ead7;
  border: 0;
  width: 100%;
  text-align: left;
  cursor: pointer;
}
.next-card b { display: block; font-size: 15px; }
.next-card span { font-size: 12px; opacity: 0.75; }
.tip { font-size: 12px; color: var(--accent); margin-right: auto; align-self: center; }

.preview {
  background: #ededed;
  padding: 16px;
  border-radius: 8px;
}
.bubble {
  background: #96ec69;
  border-radius: 6px;
  padding: 12px 14px;
  font-size: 13px;
  line-height: 1.7;
  color: #1c1917;
}
.check { font-size: 13px; margin-top: 10px; }
.check.ok { color: var(--ok); }
.check.bad { color: var(--accent); }

.overlay {
  position: absolute;
  inset: 0;
  background: rgba(28, 25, 23, 0.45);
  display: grid;
  place-items: center;
  z-index: 5;
}
.modal {
  width: min(420px, calc(100% - 40px));
  background: #fffcf7;
  padding: 20px;
}
.modal h4 { margin: 0 0 8px; font-size: 16px; }
.modal p { margin: 0 0 14px; font-size: 13px; color: var(--ink-2); max-width: none; }
.modal-actions { display: flex; justify-content: flex-end; gap: 8px; flex-wrap: wrap; }
.popover {
  width: min(360px, calc(100% - 40px));
  background: #fffcf7;
  padding: 16px;
}
.popover h4 { margin: 0 0 8px; font-size: 14px; }
.popover p { margin: 0; font-size: 13px; color: var(--ink-2); max-width: none; }

.timeline { margin: 0; padding: 0; list-style: none; }
.timeline li {
  position: relative;
  padding: 0 0 16px 16px;
  border-left: 1px solid var(--line);
  font-size: 13px;
  color: var(--ink-2);
}
.timeline li:last-child { padding-bottom: 0; }
.timeline b { color: var(--ink); }
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
.split .col { background: #fffcf7; border: 1px solid var(--line); padding: 12px; font-size: 13px; line-height: 1.65; }
.split .col h5 { margin: 0 0 8px; font-size: 12px; color: var(--muted); font-weight: 600; }
.toast {
  position: absolute;
  left: 50%;
  bottom: 18px;
  transform: translateX(-50%);
  background: var(--ink);
  color: #f4ead7;
  padding: 8px 14px;
  font-size: 12px;
  z-index: 6;
}
.score-row { display: flex; align-items: center; gap: 12px; }
.score {
  font-family: var(--serif);
  font-size: 28px;
  line-height: 1;
}
.score small { display: block; font-family: var(--sans); font-size: 12px; color: var(--muted); margin-top: 4px; }
.compose {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  align-items: stretch;
}
.draft {
  width: 100%;
  min-height: 168px;
  border: 1px solid var(--line);
  padding: 10px 12px;
  line-height: 1.7;
  font-size: 13px;
  background: #fffcf7;
  resize: vertical;
}
.draft.is-bad { border-color: #9f1239; background: #fdf4f3; }
.tag-hint {
  margin: 6px 0 0;
  font-size: 11px;
  color: var(--muted);
  line-height: 1.5;
}
.block-list {
  margin: 10px 0 0;
  padding: 10px 12px;
  border: 1px solid #e8b4ae;
  background: #fdf4f3;
}
.block-list h4 {
  margin: 0 0 6px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: #9f1239;
}
.block-list p {
  margin: 0 0 6px;
  font-size: 12px;
  color: var(--ink-2);
  line-height: 1.55;
}
.block-list p:last-child { margin-bottom: 0; }
.block-list b { color: #9f1239; }
.sent-preview, .parent-bubble {
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink);
}
.parent-bubble {
  background: #efe7d8;
  padding: 10px 12px;
  border-radius: 8px;
  margin-bottom: 10px;
}
.reason {
  border: 1px solid #e2c39a;
  background: #f8efe3;
  padding: 12px;
}
.reason h4 { margin: 0 0 8px; }
.reason p { margin: 0 0 8px; font-size: 12px; color: var(--ink-2); }
.reason .chip { display: block; width: 100%; text-align: left; margin-bottom: 6px; }
.reason .primary { width: 100%; margin-top: 4px; }
.reason .ok { font-size: 12px; color: var(--ok); margin: 8px 0 0; }
.gen {
  background: var(--ink);
  color: #f4ead7;
  border: 0;
  padding: 8px 14px;
  cursor: pointer;
  font-size: 13px;
}
.gen:disabled { opacity: 0.4; cursor: not-allowed; }
.trend-label { font-size: 12px; color: var(--muted); }

.footer {
  width: min(1100px, calc(100% - 48px));
  margin: 24px auto 32px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  color: var(--muted);
  font-size: 12px;
}

@media (max-width: 900px) {
  .topnav, .top-meta { display: none; }
  .quad-plot { height: 360px; }
  .proto-stage { grid-template-columns: 1fr; }
  .phone-wrap { position: static; }
  .phone { width: min(372px, 100%); }
  .facts, .split, .compose { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr 1fr; }
}