/* Telos 产品页。动效只标状态变化：配置退去、时刻切换、旧结论划掉。播完即停。 */
:root {
  --xy-basic: cubic-bezier(0.22, 0.25, 0, 1);
  --xy-settle: cubic-bezier(0.14, 0.78, 0.08, 1);
  --telos-scaffold: #f3f4f8;
  --telos-surface: #f7f8fc;
  --telos-bg: #ebedf4;
  --telos-face: #fcfcfe;
  --telos-ink: #242836;
  --telos-muted: #6b7084;
  --telos-accent: #5a7cf0;
  --telos-accent-soft: rgba(90, 124, 240, 0.1);
  --telos-border: rgba(36, 40, 54, 0.08);
  --telos-r-key: 16px;
  --telos-r-panel: 22px;
}

[data-theme="ink"] {
  --telos-scaffold: #191a1f;
  --telos-surface: #22242b;
  --telos-bg: #14151a;
  --telos-face: #2c303a;
  --telos-ink: #f1f3f4;
  --telos-muted: #9aa0a6;
  --telos-accent: #8b9bff;
  --telos-accent-soft: rgba(139, 155, 255, 0.16);
  --telos-border: rgba(255, 255, 255, 0.09);
}

[data-theme="paper"] {
  --telos-scaffold: #f7f6f3;
  --telos-surface: #ffffff;
  --telos-bg: #edece9;
  --telos-face: #ffffff;
  --telos-ink: #37352f;
  --telos-muted: #787774;
  --telos-accent: #37352f;
  --telos-accent-soft: rgba(55, 53, 47, 0.06);
  --telos-border: rgba(55, 53, 47, 0.12);
  --telos-r-key: 0;
  --telos-r-panel: 0;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.telos-stage {
  position: relative;
  background: var(--telos-scaffold);
  border: 1px solid var(--telos-border);
  border-radius: var(--telos-r-panel);
  color: var(--telos-ink);
  box-shadow: 0 18px 40px rgba(36, 40, 54, 0.06);
}

[data-theme="ink"] .telos-stage {
  box-shadow: 0 0 0 1px var(--telos-border), 0 24px 60px rgba(0, 0, 0, 0.45);
}

[data-theme="paper"] .telos-stage { box-shadow: none; }

/* ---------- 首屏：配置退去，一句留下 ---------- */
.hero { padding-top: clamp(104px, 12vh, 140px); padding-bottom: 12px; }
.hero__eyebrow { margin-bottom: 14px; }
.hero__sub { margin-top: 16px; }
.hero__actions { margin-top: 20px; }

.hero__title,
[data-theme="studio"] .hero__title,
[data-theme="ink"] .hero__title,
[data-theme="paper"] .hero__title {
  font-size: clamp(2rem, 4.5vw, 3.55rem);
  line-height: 1.16;
  max-width: 14em;
  letter-spacing: -0.03em;
}

[data-theme="paper"] .hero__title { font-weight: 500; max-width: 12em; }
[data-theme="paper"] .hero__inner { padding-bottom: 28px; }
[data-theme="studio"] .hero .burden { width: min(100%, 860px); }

.burden {
  align-self: stretch;
  width: min(100%, 920px);
  margin-top: 28px;
  padding: 22px 26px 26px;
  text-align: left;
}

.burden__label {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--telos-muted);
}

.burden__steps {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  list-style: none;
  margin: 0;
  padding: 0 0 16px;
  border-bottom: 1px solid var(--telos-border);
}

.burden__step {
  font-size: 14px;
  line-height: 1.4;
  color: var(--telos-muted);
  text-decoration: line-through;
  text-decoration-thickness: 1px;
  text-decoration-color: var(--telos-accent);
  opacity: 0.72;
}

.burden__reply p {
  margin: 0;
  font-size: clamp(1.15rem, 2vw, 1.4rem);
  letter-spacing: -0.02em;
  line-height: 1.35;
}

.burden__ans {
  margin-top: 8px !important;
  color: var(--telos-accent);
  font-weight: 650;
  font-size: clamp(1.55rem, 2.8vw, 2.05rem) !important;
}

/* ---------- 六个时刻 ---------- */
#work { scroll-margin-top: 76px; }
#work.section { padding-top: clamp(12px, 2vw, 28px); }
#work .sec-head {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 12px 36px;
  align-items: end;
  margin-bottom: 16px;
}
#work .sec-head h2 { margin-top: 8px; max-width: none; }
#work .sec-head p { margin-top: 0; }
.section--tight { padding-top: clamp(36px, 5vw, 80px); }

.work { --i: 0; }

.stage {
  position: relative;
  display: grid;
  width: min(100%, 46rem);
  grid-template-columns: 14.5rem minmax(0, 1fr);
  grid-template-rows: auto auto;
  background: var(--telos-face);
  border: 1px solid var(--telos-border);
}

.casehead {
  grid-column: 1 / -1;
  padding: 12px 18px 10px;
  border-bottom: 1px solid var(--telos-border);
  background: var(--telos-surface);
}

.case__kicker {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--telos-muted);
}

.case__name {
  margin: 6px 0 0;
  font-size: clamp(1.25rem, 2vw, 1.6rem);
  letter-spacing: -0.03em;
  font-weight: 600;
}

.rail {
  position: relative;
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--telos-border);
  background: var(--telos-bg);
}

.rail__mark { display: none; }

.rail button {
  flex: 0 0 auto;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0;
  padding: 3px 12px 3px 14px;
  background: transparent;
  color: var(--telos-ink);
  text-align: left;
  border-bottom: 1px solid var(--telos-border);
}

.rail button:last-of-type { border-bottom: 0; }

.rail button[aria-selected="true"] {
  background: var(--telos-accent-soft);
  box-shadow: inset 3px 0 0 var(--telos-accent);
}
.rail button[aria-selected="true"] .rail__name { color: var(--telos-accent); }
.rail button:focus-visible,
.textbtn:focus-visible { outline: 2px solid var(--telos-accent); outline-offset: -2px; }

.rail__when,
.rail__name { white-space: nowrap; }
.rail__when { font-size: 11px; line-height: 1.2; letter-spacing: 0.04em; color: var(--telos-muted); }
.rail__name { font-size: 13px; line-height: 1.2; font-weight: 650; letter-spacing: -0.02em; }

.work.is-live .rail {
  position: absolute;
  z-index: 2;
  grid-column: 1;
  grid-row: 2;
  top: 0;
  left: 0;
  width: 14.5rem;
  height: auto;
}
.work.is-live .stage__body {
  grid-column: 1 / -1;
  grid-row: 2;
  padding: 0;
  background: transparent;
}

.beat .when {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--telos-muted);
}

.who {
  margin: 16px 0 4px;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--telos-muted);
}

.said {
  margin: 0;
  max-width: 40rem;
  font-size: 1.05rem;
  line-height: 1.55;
}

.said--telos {
  font-size: clamp(1.2rem, 2vw, 1.45rem);
  line-height: 1.45;
  letter-spacing: -0.02em;
  font-weight: 600;
}

.point {
  margin: 22px 0 0;
  max-width: 36rem;
  color: var(--telos-muted);
  font-size: 15px;
}

.more {
  margin: 8px 0 0;
  max-width: 40rem;
  color: var(--telos-text);
  font-size: 16px;
  line-height: 1.6;
}

.cap {
  margin: 10px 0 0;
  font-size: 13px;
  color: var(--telos-muted);
}

.textbtn {
  margin-top: 16px;
  padding: 0;
  background: none;
  color: var(--telos-accent);
  font-weight: 600;
  font-size: 14px;
}

.textbtn:hover { text-decoration: underline; }

.rule__after,
.demo__after,
.echo--on,
.beat__ruled,
[data-back] .when-open,
.when-kept { display: none; }

[data-back][aria-expanded="true"] .when-shut { display: none; }
[data-back][aria-expanded="true"] .when-open { display: inline; }

.work.is-ruled .echo--on,
.work.is-kept .demo__after,
.work.is-ruled .rule__after,
.work.is-ruled #beat-expire .beat__ruled { display: block; }

.work.is-ruled .echo--off,
.work.is-ruled #beat-expire .beat__plain { display: none; }

.work.is-kept [data-approve] .when-open,
.work.is-ruled [data-rule] .when-open { display: none; }
.work.is-kept [data-approve] .when-kept,
.work.is-ruled [data-rule] .when-kept { display: inline; }

.backstage {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 480ms var(--xy-settle);
}

.backstage.is-open { grid-template-rows: 1fr; }
.backstage__inner { overflow: hidden; }

.chain {
  list-style: none;
  margin: 14px 0 0;
  padding: 0 0 0 14px;
  border-left: 1px solid var(--telos-border);
}

.chain li {
  padding: 4px 0;
  color: var(--telos-muted);
  font-size: 14px;
}

.chain__front {
  margin: 10px 0 4px;
  color: var(--telos-accent);
  font-weight: 650;
}

.ledger {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  max-width: 28rem;
  position: relative;
}

.ledger li {
  padding: 9px 0 9px 12px;
  border-top: 1px solid var(--telos-border);
  color: var(--telos-muted);
  font-size: 15px;
}

.ledger li.is-hold {
  color: var(--telos-ink);
  font-weight: 650;
  box-shadow: inset 2px 0 0 var(--telos-accent);
  background: var(--telos-accent-soft);
}

.demo__btn { margin-top: 16px; }
.demo__after { margin-top: 12px; }

.rule {
  margin-top: 22px;
  padding-top: 16px;
  border-top: 1px solid var(--telos-border);
  max-width: 36rem;
}

.rule__label { margin: 0; color: var(--telos-muted); font-size: 14px; }
.rule__text {
  margin: 8px 0 0;
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}
.rule__after { margin: 10px 0 0; }

.stale {
  position: relative;
  display: inline-block;
  margin: 14px 0 0;
  color: var(--telos-muted);
  font-size: 15px;
}

.work.is-ruled .stale::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 52%;
  height: 1px;
  background: currentColor;
  transform-origin: left center;
  transform: scaleX(0);
  animation: telosStrike 480ms var(--xy-settle) forwards;
}

.echo {
  margin: 14px 0 0;
  max-width: 40rem;
  color: var(--telos-muted);
  font-size: 15px;
}

.burden__job { margin: 16px 0 0; font-size: 15px; }
.burden__job a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid var(--telos-border);
}

.rail__revise {
  display: none;
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--telos-accent);
}
.work.is-ruled #tab-expire .rail__revise { display: inline; }
#tab-expire {
  display: grid;
  grid-template-columns: 1fr auto;
  column-gap: 8px;
  align-items: end;
}
#tab-expire .rail__when { grid-column: 1 / -1; }
#tab-expire .rail__revise { grid-column: 2; grid-row: 2; }

.facing p {
  margin: 16px 0 0;
  max-width: 40rem;
  font-size: 1.05rem;
  line-height: 1.5;
}
.work.is-live .facing p { display: none; }
.work.is-live[data-beat="hand"] .facing [data-for="hand"],
.work.is-live[data-beat="resume"] .facing [data-for="resume"],
.work.is-live[data-beat="fill"] .facing [data-for="fill"],
.work.is-live[data-beat="night"] .facing [data-for="night"],
.work.is-live[data-beat="yours"] .facing [data-for="yours"],
.work.is-live[data-beat="expire"] .facing [data-for="expire"] { display: block; }

/* 到这一幕已经成立的：随时刻累加，当前这一条进来 */
.held {
  grid-column: 1 / -1;
  padding: 14px 28px 16px;
  border-top: 1px solid var(--telos-border);
  background: var(--telos-surface);
}
.held__kicker {
  margin: 0 0 8px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--telos-muted);
}
.held ol { list-style: none; margin: 0; padding: 0; }
.held li {
  display: block;
  margin: 0;
  padding: 3px 0;
  font-size: 14px;
  line-height: 1.45;
  color: var(--telos-muted);
}
.held [data-h="6r"] { display: none; }
.work.is-live .held li { display: none; }
.work.is-live[data-beat="hand"] .held [data-h="1"],
.work.is-live[data-beat="resume"] .held [data-h="1"],
.work.is-live[data-beat="resume"] .held [data-h="2"],
.work.is-live[data-beat="fill"] .held [data-h="1"],
.work.is-live[data-beat="fill"] .held [data-h="2"],
.work.is-live[data-beat="fill"] .held [data-h="3"],
.work.is-live[data-beat="night"] .held [data-h="1"],
.work.is-live[data-beat="night"] .held [data-h="2"],
.work.is-live[data-beat="night"] .held [data-h="3"],
.work.is-live[data-beat="night"] .held [data-h="4"],
.work.is-live[data-beat="yours"] .held [data-h="1"],
.work.is-live[data-beat="yours"] .held [data-h="2"],
.work.is-live[data-beat="yours"] .held [data-h="3"],
.work.is-live[data-beat="yours"] .held [data-h="4"],
.work.is-live[data-beat="yours"] .held [data-h="5"],
.work.is-live[data-beat="expire"] .held [data-h="1"],
.work.is-live[data-beat="expire"] .held [data-h="2"],
.work.is-live[data-beat="expire"] .held [data-h="3"],
.work.is-live[data-beat="expire"] .held [data-h="4"],
.work.is-live[data-beat="expire"] .held [data-h="5"],
.work.is-live[data-beat="expire"] .held [data-h="6"] { display: block; }
.work.is-live.is-ruled .held [data-h="6"] { display: none; }
.work.is-live.is-ruled[data-beat="expire"] .held [data-h="6r"] { display: block; }
.work.is-live[data-beat="hand"] .held [data-h="1"],
.work.is-live[data-beat="resume"] .held [data-h="2"],
.work.is-live[data-beat="fill"] .held [data-h="3"],
.work.is-live[data-beat="night"] .held [data-h="4"],
.work.is-live[data-beat="yours"] .held [data-h="5"],
.work.is-live[data-beat="expire"] .held [data-h="6"],
.work.is-live.is-ruled[data-beat="expire"] .held [data-h="6r"] {
  color: var(--telos-ink);
  font-weight: 650;
  box-shadow: inset 2px 0 0 var(--telos-accent);
  padding-left: 10px;
}

/* 无脚本时六幕叠成可读的卷宗 */
.beat + .beat {
  margin-top: 28px;
  padding-top: 28px;
  border-top: 1px solid var(--telos-border);
}

.work.is-live .beat:not([hidden]) {
  display: flow-root;
  min-height: 15.5rem;
  padding: 22px 28px 24px 14.5rem;
}
.work.is-live .beat .point {
  margin: 14px 0 0;
  padding: 2px 0 0 16px;
  border-left: 1px solid var(--telos-border);
}
.work.is-live .beat .ledger,
.work.is-live .beat .ledger + .cap,
.work.is-live .beat .rule {
  clear: both;
  max-width: none;
  margin-right: -28px;
  margin-left: calc(28px - 14.5rem);
  padding-left: 28px;
  padding-right: 28px;
}
.work.is-live .beat[hidden] { display: none; }
.work.is-live .beat + .beat { margin-top: 0; padding-top: 0; border-top: 0; }

.aside {
  margin: 22px 0 0;
  max-width: 42rem;
  color: var(--telos-muted);
}
.grow { margin: 28px 0 0; max-width: 42rem; }
.grow__title {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 650;
  letter-spacing: -0.02em;
}
.grow ol { list-style: none; margin: 10px 0 0; padding: 0; }
.grow li {
  margin: 0;
  padding: 6px 0 6px 14px;
  border-left: 1px solid var(--telos-border);
  color: var(--telos-muted);
  font-size: 15px;
}
.grow li:last-child { color: var(--telos-ink); border-left-color: var(--telos-accent); }

/* ---------- 动效：一次，停住 ---------- */
@keyframes chipOut {
  from { opacity: 1; transform: none; }
  to { opacity: 0.38; transform: translateY(-8px); }
}
@keyframes replyIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: none; }
}
@keyframes riseIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: none; }
}
@keyframes telosStrike { to { transform: scaleX(1); } }

/* 第一天：六步从眼前退去，一句留下 */
.recede { display: none; }
.work.is-live .beat.is-in .recede {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 18px;
  margin: 0 0 18px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--telos-border);
}
.recede__steps {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 16px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.recede__steps li {
  color: var(--telos-muted);
  font-size: 13px;
  text-decoration: line-through;
}
.recede__stay {
  margin: 0;
  font-size: 1.35rem;
  font-weight: 650;
  letter-spacing: -0.03em;
  color: var(--telos-accent);
}

/* 三个月后：四条路，两条已经出去，两条还在 */
.fork {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
}
.fork li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 10px;
  align-items: baseline;
  padding: 10px 12px;
  border: 1px solid var(--telos-border);
  border-radius: 10px;
  font-size: 14px;
}
.fork b { font-size: 15px; }
.fork .is-out { color: var(--telos-muted); }
.fork .is-out b { text-decoration: line-through; }
.fork .is-in { box-shadow: inset 2px 0 0 var(--telos-accent); }
.fork .is-open {
  box-shadow: inset 2px 0 0 var(--telos-accent);
  background: var(--telos-accent-soft);
}

/* 第三次：三张同样的单子收成一件 */
.fold {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  position: relative;
  height: 46px;
}
.fold li {
  position: absolute;
  left: 0;
  right: 18%;
  height: 34px;
  padding: 7px 12px;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
  border: 1px solid var(--telos-border);
  border-radius: 8px;
  background: var(--telos-face);
  color: var(--telos-muted);
  font-size: 13px;
}
.fold li:nth-child(1) { top: 0; }
.fold li:nth-child(2) { top: 6px; left: 8px; }
.fold li:nth-child(3) { top: 12px; left: 16px; }
.fold__one {
  margin: 10px 0 0;
  font-weight: 600;
}

/* 同一夜：一条线从账的左边往下走，停在等你决定的那一行 */
.nightline {
  position: absolute;
  left: 28px;
  top: 0;
  bottom: 0;
  width: 1px;
  margin: 0;
  pointer-events: none;
}
.nightline span {
  display: block;
  width: 2px;
  height: 0;
  background: var(--telos-accent);
}

/* 停在边界：决定还在你手里，圈停在按钮外 */
.hold { position: relative; display: inline-block; margin-top: 16px; }
.hold .demo__btn { margin-top: 0; }
.hold__ring {
  position: absolute;
  inset: -7px;
  border: 1px solid var(--telos-accent);
  border-radius: 999px;
  opacity: 0.55;
  pointer-events: none;
}
.work.is-kept .hold__ring { opacity: 0; }

@media (prefers-reduced-motion: no-preference) {
  .burden__step {
    opacity: 1;
    animation: chipOut 0.7s var(--xy-basic) forwards;
  }
  .burden__step:nth-child(1) { animation-delay: 0.12s; }
  .burden__step:nth-child(2) { animation-delay: 0.28s; }
  .burden__step:nth-child(3) { animation-delay: 0.44s; }
  .burden__step:nth-child(4) { animation-delay: 0.6s; }
  .burden__step:nth-child(5) { animation-delay: 0.76s; }
  .burden__step:nth-child(6) { animation-delay: 0.92s; }
  .burden__reply { opacity: 0; animation: replyIn 0.55s var(--xy-settle) 1.25s forwards; }

  .work.is-live .beat.is-in .said--telos { animation: riseIn 0.5s var(--xy-settle) both; }
  .work.is-live .facing p { animation: riseIn 0.45s var(--xy-settle) both; }
  .work.is-live .beat.is-in .ledger li { animation: riseIn 0.4s var(--xy-settle) both; }
  .work.is-live .beat.is-in .ledger li:nth-child(2) { animation-delay: 0.05s; }
  .work.is-live .beat.is-in .ledger li:nth-child(3) { animation-delay: 0.1s; }
  .work.is-live .beat.is-in .ledger li:nth-child(4) { animation-delay: 0.15s; }
  .work.is-live .beat.is-in .ledger li:nth-child(5) { animation-delay: 0.22s; }

  .work.is-live .beat.is-in .recede__steps li {
    animation: chipOut 0.55s var(--xy-basic) both;
  }
  .work.is-live .beat.is-in .recede__steps li:nth-child(1) { animation-delay: 0.02s; }
  .work.is-live .beat.is-in .recede__steps li:nth-child(2) { animation-delay: 0.1s; }
  .work.is-live .beat.is-in .recede__steps li:nth-child(3) { animation-delay: 0.18s; }
  .work.is-live .beat.is-in .recede__steps li:nth-child(4) { animation-delay: 0.26s; }
  .work.is-live .beat.is-in .recede__steps li:nth-child(5) { animation-delay: 0.34s; }
  .work.is-live .beat.is-in .recede__steps li:nth-child(6) { animation-delay: 0.42s; }
  .work.is-live .beat.is-in .recede__stay {
    opacity: 0;
    animation: replyIn 0.5s var(--xy-settle) 0.55s forwards;
  }

  .work.is-live .beat.is-in .fork li { animation: riseIn 0.45s var(--xy-settle) both; }
  .work.is-live .beat.is-in .fork li:nth-child(2) { animation-delay: 0.06s; }
  .work.is-live .beat.is-in .fork li:nth-child(3) { animation-delay: 0.12s; }
  .work.is-live .beat.is-in .fork li:nth-child(4) { animation-delay: 0.2s; }
  .work.is-live .beat.is-in .fork .is-out {
    animation-name: chipOut;
    animation-duration: 0.6s;
  }

  .work.is-live .beat.is-in .fold li:nth-child(1) {
    animation: foldA 0.7s var(--xy-settle) 0.15s both;
  }
  .work.is-live .beat.is-in .fold li:nth-child(2) {
    animation: foldB 0.7s var(--xy-settle) 0.15s both;
  }
  .work.is-live .beat.is-in .fold li:nth-child(3) {
    animation: foldC 0.7s var(--xy-settle) 0.15s both;
  }
  .work.is-live .beat.is-in .fold__one {
    opacity: 0;
    animation: replyIn 0.45s var(--xy-settle) 0.7s forwards;
  }

  .work.is-live .beat.is-in .nightline span {
    animation: nightRun 1.1s var(--xy-basic) 0.2s forwards;
  }

  .work.is-live .beat.is-in .hold__ring {
    animation: holdPulse 0.9s var(--xy-settle) 0.35s 1;
  }
  .work.is-live[data-beat="hand"] .held [data-h="1"],
  .work.is-live[data-beat="resume"] .held [data-h="2"],
  .work.is-live[data-beat="fill"] .held [data-h="3"],
  .work.is-live[data-beat="night"] .held [data-h="4"],
  .work.is-live[data-beat="yours"] .held [data-h="5"],
  .work.is-live[data-beat="expire"] .held [data-h="6"],
  .work.is-live.is-ruled[data-beat="expire"] .held [data-h="6r"] {
    animation: replyIn 0.45s var(--xy-settle) both;
  }
}

@keyframes foldA { to { transform: translate(10px, 6px); opacity: 0.4; } }
@keyframes foldB { to { transform: translate(2px, -4px); opacity: 0.16; } }
@keyframes foldC { to { transform: translate(-6px, -14px); opacity: 0; } }
@keyframes nightRun { to { height: 78%; } }
@keyframes holdPulse {
  0% { transform: scale(1); opacity: 0.3; }
  45% { transform: scale(1.22); opacity: 0.95; }
  100% { transform: scale(1); opacity: 0.55; }
}

[data-theme="paper"] .burden__step { animation-name: chipFade; }
[data-theme="paper"] .burden__reply,
[data-theme="paper"] .work.is-live .beat.is-in .said--telos,
[data-theme="paper"] .work.is-live .beat.is-in .ledger li,
[data-theme="paper"] .work.is-live .facing p,
[data-theme="paper"] .work.is-live[data-beat] .held li { animation: none; }
[data-theme="paper"] .work.is-ruled .stale::after { animation: none; }
[data-theme="paper"] .burden__reply { opacity: 1; }
[data-theme="paper"] .rail__mark { transition: none; }
[data-theme="paper"] .backstage { transition: none; }
[data-theme="paper"] .work.is-ruled .stale::after { transform: scaleX(1); }
[data-theme="paper"] .recede__stay,
[data-theme="paper"] .fold__one { opacity: 1; animation: none; }
[data-theme="paper"] .nightline span { height: 78%; animation: none; }
[data-theme="paper"] .hold__ring { animation: none; }

@keyframes chipFade { to { opacity: 0.28; } }

@media (prefers-reduced-motion: reduce) {
  .burden__step { opacity: 0.72; animation: none; transform: none; }
  .burden__reply { opacity: 1; animation: none; }
  .rail__mark, .backstage { transition: none; }
  .work.is-live .beat.is-in .said--telos,
  .work.is-live .beat.is-in .ledger li,
  .work.is-live .facing p,
  .held li,
  .work.is-ruled .stale::after { animation: none; }
  .work.is-ruled .stale::after { transform: scaleX(1); }
  .recede__stay, .fold__one { opacity: 1; animation: none; }
  .recede__steps li, .fork li, .fold li, .nightline span, .hold__ring { animation: none; }
  .nightline span { height: 78%; }
  .fold li:nth-child(2), .fold li:nth-child(3) { opacity: 0.25; }
}

@media (max-width: 820px) {
  .stage { grid-template-columns: 1fr; }
  #work .sec-head { grid-template-columns: 1fr; }
  .rail {
    flex-direction: row;
    overflow-x: auto;
    border-right: 0;
    border-bottom: 1px solid var(--telos-border);
    min-width: 0;
  }
  .rail button {
    flex: 1 0 auto;
    flex-direction: column;
    align-items: flex-start;
    gap: 2px;
    min-height: 52px;
    border-bottom: 0;
    border-right: 1px solid var(--telos-border);
  }
  .rail__mark { display: none; }
  .rail button[aria-selected="true"] { box-shadow: inset 0 -2px 0 var(--telos-accent); }
  .work.is-live .rail { position: static; width: auto; height: auto; }
  .work.is-live .stage__body { grid-column: auto; padding: 20px 18px 22px; background: var(--telos-face); }
  .work.is-live .beat:not([hidden]) { display: block; min-height: 0; padding: 0; }
  .work.is-live .beat .ledger,
  .work.is-live .beat .ledger + .cap,
  .work.is-live .beat .rule { margin-left: 0; margin-right: 0; padding-left: 0; padding-right: 0; }
  .work.is-live .beat .point { margin: 16px 0 0; padding: 14px 0 0; border-left: 0; border-top: 1px solid var(--telos-border); }
}

@media (max-width: 720px) {
  .burden { padding: 18px; }
  .burden__steps { gap: 6px 14px; }
}

/* 卷宗下面另开的四块：时间空档、没被问到的、说过的与留着的、夜里、不做的。各做一次，停住。 */
.field { margin: 56px 0 8px; }
.field__head h3 {
  margin: 8px 0 0;
  max-width: 18em;
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 650;
  letter-spacing: -0.03em;
  line-height: 1.15;
}
.span {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 16px;
  margin: 28px 0 0;
}
.span__a, .span__b { font-size: 13px; letter-spacing: 0.12em; color: var(--telos-muted); }
.span__line { display: block; height: 1px; background: var(--telos-border); position: relative; }
.span__line i {
  display: block;
  height: 2px;
  margin-top: -0.5px;
  background: var(--telos-accent);
  transform: scaleX(0);
  transform-origin: left center;
  animation: spanDraw 1.3s var(--xy-settle, ease) 0.15s forwards;
}
.span__note { margin: 10px 0 0; color: var(--telos-muted); font-size: 14px; }
.ask { margin: 36px 0 0; }
.ask__k, .split__k, .watch__k, .wont__k {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--telos-muted);
}
.unasked { list-style: none; margin: 0; padding: 0; }
.unasked li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 18px;
  padding: 9px 0;
  border-top: 1px solid var(--telos-border);
}
.unasked s {
  position: relative;
  text-decoration: none;
  color: var(--telos-muted);
}
.unasked s::after {
  content: "";
  position: absolute;
  left: 0; right: 0; top: 54%;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left center;
  animation: telosStrike 0.55s var(--xy-settle, ease) forwards;
}
.unasked li:nth-child(2) s::after { animation-delay: 0.12s; }
.unasked li:nth-child(3) s::after { animation-delay: 0.24s; }
.unasked li:nth-child(4) s::after { animation-delay: 0.36s; }
.unasked li:nth-child(5) s::after { animation-delay: 0.48s; }
.unasked li:nth-child(6) s::after { animation-delay: 0.6s; }
.unasked em {
  font-style: normal;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--telos-accent);
  opacity: 0;
  animation: replyIn 0.4s var(--xy-settle, ease) forwards;
}
.unasked li:nth-child(1) em { animation-delay: 0.35s; }
.unasked li:nth-child(2) em { animation-delay: 0.47s; }
.unasked li:nth-child(3) em { animation-delay: 0.59s; }
.unasked li:nth-child(4) em { animation-delay: 0.71s; }
.unasked li:nth-child(5) em { animation-delay: 0.83s; }
.unasked li:nth-child(6) em { animation-delay: 0.95s; }
.split {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: 28px 48px;
  margin: 48px 0 0;
  padding-top: 28px;
  border-top: 1px solid var(--telos-border);
}
.split__big {
  margin: 0;
  font-size: clamp(1.35rem, 2.4vw, 2rem);
  font-weight: 650;
  letter-spacing: -0.03em;
  line-height: 1.25;
  opacity: 0;
  animation: replyIn 0.5s var(--xy-settle, ease) forwards;
}
.split__big:nth-of-type(2) { animation-delay: 0.12s; }
.split__big:nth-of-type(3) { animation-delay: 0.24s; }
.split__big:nth-of-type(4) { animation-delay: 0.36s; }
.kept { list-style: none; margin: 0; padding: 0; }
.kept li {
  margin: 0;
  padding: 8px 0 8px 12px;
  border-left: 1px solid var(--telos-border);
  color: var(--telos-muted);
  font-size: 15px;
  line-height: 1.45;
}
.kept li:last-child { color: var(--telos-ink); border-left-color: var(--telos-accent); }
.watch {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-rows: auto auto auto;
  column-gap: 28px;
  align-items: center;
  margin: 48px 0 0;
  padding: 22px 0;
  border-top: 1px solid var(--telos-border);
  border-bottom: 1px solid var(--telos-border);
}
.watch__k { grid-column: 2; margin: 0; }
.watch__n {
  grid-row: 1 / span 3;
  margin: 0;
  font-size: clamp(4.5rem, 10vw, 8rem);
  font-weight: 650;
  letter-spacing: -0.06em;
  line-height: 0.85;
  font-variant-numeric: tabular-nums;
}
.watch__col { grid-column: 2; height: 72px; width: 3px; background: var(--telos-border); position: relative; justify-self: start; }
.watch__col i {
  display: block;
  width: 100%;
  height: 0;
  background: var(--telos-accent);
  animation: nightRun 1.2s var(--xy-basic, ease) 0.2s forwards;
}
.watch__note { grid-column: 2; margin: 0; max-width: 36rem; color: var(--telos-muted); }
.wont { margin: 40px 0 0; }
.wont ol { list-style: none; margin: 0; padding: 0; }
.wont li {
  margin: 0;
  padding: 10px 0;
  border-top: 1px solid var(--telos-border);
  font-size: clamp(1.25rem, 2.2vw, 1.8rem);
  font-weight: 650;
  letter-spacing: -0.03em;
  line-height: 1.2;
  opacity: 0;
  animation: replyIn 0.45s var(--xy-settle, ease) forwards;
}
.wont li:nth-child(1) { animation-delay: 0.05s; }
.wont li:nth-child(2) { animation-delay: 0.14s; }
.wont li:nth-child(3) { animation-delay: 0.23s; }
.wont li:nth-child(4) { animation-delay: 0.32s; }
.wont li:nth-child(5) { animation-delay: 0.41s; }
.wont li:nth-child(6) { animation-delay: 0.5s; }
@keyframes spanDraw { to { transform: scaleX(1); } }
[data-theme="paper"] .span__line i,
[data-theme="paper"] .unasked s::after,
[data-theme="paper"] .unasked em,
[data-theme="paper"] .split__big,
[data-theme="paper"] .watch__col i,
[data-theme="paper"] .wont li { animation: none; }
[data-theme="paper"] .span__line i { transform: scaleX(1); }
[data-theme="paper"] .unasked s::after { transform: scaleX(1); }
[data-theme="paper"] .unasked em,
[data-theme="paper"] .split__big,
[data-theme="paper"] .wont li { opacity: 1; transform: none; }
[data-theme="paper"] .watch__col i { height: 78%; }
@media (prefers-reduced-motion: reduce) {
  .span__line i, .unasked s::after, .unasked em, .split__big, .watch__col i, .wont li { animation: none; }
  .span__line i, .unasked s::after { transform: scaleX(1); }
  .unasked em, .split__big, .wont li { opacity: 1; transform: none; }
  .watch__col i { height: 78%; }
}
@media (max-width: 820px) {
  .split { grid-template-columns: 1fr; gap: 22px; }
  .watch { grid-template-columns: 1fr; row-gap: 8px; }
  .watch__n { grid-row: auto; font-size: 4.5rem; }
  .watch__k, .watch__col, .watch__note { grid-column: 1; }
}