:root {
  color-scheme: dark;
  --ground: oklch(16% 0.025 248);
  --ground-deep: oklch(12% 0.022 248);
  --surface: oklch(20% 0.026 248);
  --surface-high: oklch(24% 0.028 248);
  --line: oklch(35% 0.026 248);
  --line-strong: oklch(49% 0.035 248);
  --text: oklch(92% 0.014 248);
  --text-soft: oklch(72% 0.025 248);
  --text-faint: oklch(57% 0.025 248);
  --signal: oklch(66% 0.17 32);
  --signal-deep: oklch(48% 0.14 30);
  --good: oklch(72% 0.105 155);
  --warn: oklch(78% 0.12 83);
  --bad: oklch(66% 0.17 27);
  --display: Charter, "Iowan Old Style", "Songti TC", "Noto Serif TC", serif;
  --body: "Avenir Next", Avenir, "PingFang TC", "Noto Sans TC", sans-serif;
  --ease: cubic-bezier(.22, 1, .36, 1);
  --rail: clamp(17rem, 22vw, 21rem);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--ground); color: var(--text); font-family: var(--body); font-kerning: normal; }
body { margin: 0; min-height: 100vh; background: var(--ground); }
button, input, textarea { font: inherit; }
button, a, input, textarea, summary { -webkit-tap-highlight-color: transparent; }
button:focus-visible, input:focus-visible, textarea:focus-visible, a:focus-visible, summary:focus-visible, [tabindex]:focus-visible { outline: .18rem solid var(--signal); outline-offset: .18rem; }
.skip-link { position: fixed; top: .5rem; left: .5rem; z-index: 20; transform: translateY(-150%); background: var(--text); color: var(--ground); padding: .7rem 1rem; }
.skip-link:focus { transform: none; }
.empty { color: var(--text-faint); font-family: var(--display); font-style: italic; line-height: 1.65; }

.shell { min-height: 100vh; }
.ops-rail { padding: max(1.25rem, env(safe-area-inset-top)) max(1rem, env(safe-area-inset-right)) 1.25rem max(1rem, env(safe-area-inset-left)); background: var(--ground-deep); border-bottom: 1px solid var(--line); }
.identity { display: inline-flex; align-items: center; gap: .8rem; width: fit-content; color: var(--text); text-decoration: none; }
.identity-mark { display: grid; place-items: center; width: 2.65rem; aspect-ratio: 1; border: 1px solid var(--text-soft); font-family: var(--display); font-size: 1.6rem; }
.identity b, .identity small { display: block; }
.identity b { letter-spacing: .08em; font-size: .8rem; }
.identity small { margin-top: .15rem; color: var(--text-faint); font-size: .6rem; letter-spacing: .16em; }
.rail-state { display: flex; align-items: center; gap: .75rem; margin-top: 1.5rem; }
.rail-state small, .rail-state strong { display: block; }
.rail-state small { color: var(--text-faint); font-size: .66rem; letter-spacing: .12em; }
.rail-state strong { margin-top: .1rem; font-size: .92rem; }
.lamp { width: .65rem; aspect-ratio: 1; border-radius: 50%; background: var(--warn); }
.lamp.running { background: var(--good); }.lamp.stopped { background: var(--bad); }
.rail-nav { display: none; }
.rail-controls { display: grid; grid-template-columns: repeat(3, 1fr); gap: .35rem; margin-top: 1.2rem; }
.control { min-height: 2.9rem; border: 1px solid var(--line-strong); background: transparent; color: var(--text-soft); cursor: pointer; padding: .55rem .65rem; font-size: .72rem; text-align: left; transition: color 140ms var(--ease), background 140ms var(--ease), transform 140ms var(--ease); }
.control.start { color: var(--good); }.control.stop { color: var(--bad); border-color: var(--signal-deep); }
.control:hover { background: var(--surface-high); color: var(--text); transform: translateY(-1px); }
.control[disabled] { opacity: .35; cursor: not-allowed; transform: none; }
.rail-foot { display: none; }

#main-content { min-width: 0; }
.topline { min-height: 3.5rem; display: flex; justify-content: space-between; align-items: center; gap: 1rem; padding: .75rem clamp(1rem, 4vw, 4rem); border-bottom: 1px solid var(--line); color: var(--text-faint); font-size: .62rem; letter-spacing: .11em; text-transform: uppercase; }
.topline time { color: var(--text-soft); font-variant-numeric: tabular-nums; }
.mission, .current-work, .progress-section, .documents-section, .activity-section, .chat-section { position: relative; border-bottom: 1px solid var(--line); padding: clamp(3rem, 7vw, 7rem) clamp(1rem, 5vw, 5rem); }
.chapter { color: var(--surface-high); font-family: var(--display); font-size: clamp(8rem, 27vw, 24rem); line-height: .65; position: absolute; right: 2%; top: 12%; z-index: 0; user-select: none; }
.mission { min-height: clamp(35rem, 75vh, 54rem); display: flex; flex-direction: column; justify-content: center; overflow: hidden; }
.mission-copy, .progress-axis { position: relative; z-index: 1; }
.eyebrow { margin: 0 0 1rem; color: var(--signal); font-size: .66rem; font-weight: 700; letter-spacing: .18em; text-transform: uppercase; }
h1, h2 { font-family: var(--display); font-weight: 500; letter-spacing: -.035em; }
h1 { max-width: 17ch; margin: 0; font-size: clamp(2.7rem, 7.2vw, 7.6rem); line-height: .92; }
h2 { margin: 0; font-size: clamp(2rem, 4.2vw, 4.5rem); line-height: 1; }
.objective { max-width: 62ch; margin: clamp(1.5rem, 3vw, 3rem) 0 0; color: var(--text-soft); font-size: clamp(1rem, 1.5vw, 1.25rem); line-height: 1.75; }
.progress-axis { max-width: 40rem; margin-top: clamp(3rem, 8vw, 7rem); }
.progress-label { display: flex; justify-content: space-between; align-items: baseline; }
.progress-label span { color: var(--text-soft); font-size: .72rem; letter-spacing: .12em; }
.progress-label strong { font-family: var(--display); font-size: clamp(2rem, 4vw, 3.5rem); font-variant-numeric: tabular-nums; }
.progress-track { height: .38rem; margin-top: .65rem; background: var(--surface-high); overflow: hidden; }
.progress-track span { display: block; width: 0; height: 100%; background: var(--signal); transition: width 700ms var(--ease); }
.progress-axis p { margin: .8rem 0 0; color: var(--text-faint); font-size: .72rem; line-height: 1.6; }

.section-index { display: flex; align-items: baseline; gap: 1rem; margin-bottom: clamp(2rem, 5vw, 5rem); }
.section-index span { color: var(--signal); font-family: var(--display); font-size: 2rem; }
.section-index p { margin: 0; color: var(--text-faint); font-size: .65rem; letter-spacing: .16em; }
.current-ticket { border-top: 2px solid var(--text); border-bottom: 1px solid var(--line-strong); padding: clamp(1.5rem, 4vw, 3rem) 0; }
.ticket-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 1.5rem; }
.ticket-head h2 { max-width: 18ch; }
.status-chip { flex: none; display: inline-flex; align-items: center; min-height: 2rem; padding: .3rem .55rem; border: 1px solid currentColor; color: var(--warn); font-size: .6rem; letter-spacing: .1em; text-transform: uppercase; }
.status-chip.running, .status-chip.accepted, .status-chip.done { color: var(--good); }
.status-chip.rejected, .status-chip.infra_void, .status-chip.blocked, .status-chip.stopped { color: var(--bad); }
.current-summary { max-width: 72ch; margin: 2rem 0; color: var(--text-soft); line-height: 1.75; white-space: pre-wrap; }
.current-facts { display: grid; gap: 1rem; margin: 0; }
.current-facts div { border-top: 1px solid var(--line); padding-top: .8rem; }
.current-facts dt { color: var(--text-faint); font-size: .63rem; letter-spacing: .11em; text-transform: uppercase; }
.current-facts dd { margin: .35rem 0 0; color: var(--text-soft); font-size: .82rem; line-height: 1.5; overflow-wrap: anywhere; }
.health-line { display: grid; gap: 1px; margin-top: 2.5rem; background: var(--line); border: 1px solid var(--line); }
.health-line div { background: var(--surface); padding: 1rem; }
.health-line span, .health-line strong { display: block; }
.health-line span { color: var(--text-faint); font-size: .62rem; letter-spacing: .1em; }
.health-line strong { margin-top: .3rem; font-size: .84rem; }

.section-title-row { display: flex; flex-direction: column; align-items: flex-start; gap: 1.25rem; margin-bottom: 2.5rem; }
.section-title-row h2 { max-width: 17ch; }
.status-counts { display: flex; flex-wrap: wrap; gap: .4rem; color: var(--text-faint); font-size: .66rem; }
.status-counts span { border: 1px solid var(--line); padding: .35rem .5rem; font-variant-numeric: tabular-nums; }
.meta-count { color: var(--text-faint); font-size: .65rem; letter-spacing: .13em; }
.milestones { list-style: none; padding: 0; margin: 0; border-top: 1px solid var(--line-strong); }
.milestone { display: grid; grid-template-columns: 2.5rem 1fr auto; gap: .9rem; padding: 1.3rem 0; border-bottom: 1px solid var(--line); }
.milestone-index { color: var(--text-faint); font-family: var(--display); }
.milestone h3 { margin: 0; font-size: .95rem; }
.milestone p { margin: .5rem 0 0; color: var(--text-faint); font-size: .78rem; line-height: 1.6; }
.milestone-meter { grid-column: 2 / -1; height: .2rem; background: var(--surface-high); }
.milestone-meter span { display: block; height: 100%; background: var(--line-strong); }
.milestone.done .milestone-meter span { background: var(--good); }.milestone.active .milestone-meter span { background: var(--signal); }.milestone.blocked .milestone-meter span { background: var(--bad); }

.document-browser { display: grid; min-height: 38rem; border-top: 1px solid var(--line-strong); border-bottom: 1px solid var(--line-strong); }
.folder-tree, .document-list { border-bottom: 1px solid var(--line); padding: 1rem 0; }
.folder-tree button, .document-list button { width: 100%; min-height: 2.75rem; border: 0; background: transparent; color: var(--text-soft); cursor: pointer; padding: .55rem .7rem; text-align: left; }
.folder-tree button { display: flex; justify-content: space-between; gap: 1rem; font-size: .76rem; }
.folder-tree button::before { content: "/"; color: var(--signal); margin-right: .5rem; }
.folder-tree button.active, .document-list button.active { background: var(--surface-high); color: var(--text); }
.document-list button { border-top: 1px solid var(--line); font-family: var(--display); font-size: .95rem; }
.document-content { min-width: 0; padding: clamp(1.5rem, 4vw, 3.5rem) 0; }
.document-content h1, .document-content h2, .document-content h3 { font-family: var(--display); font-weight: 500; }
.document-content h1 { margin: 0 0 2rem; font-size: clamp(2rem, 4vw, 3.6rem); line-height: 1; }
.document-content h2 { margin: 2.5rem 0 1rem; font-size: 1.65rem; letter-spacing: -.02em; }
.document-content h3 { margin: 2rem 0 1rem; font-size: 1.15rem; }
.document-content p, .document-content li { max-width: 70ch; color: var(--text-soft); line-height: 1.75; }
.document-content ul, .document-content ol { padding-left: 1.25rem; }
.document-content blockquote { max-width: 65ch; margin: 1.5rem 0; padding: .2rem 0 .2rem 1.25rem; border-left: 2px solid var(--signal); color: var(--text); font-family: var(--display); font-size: 1.2rem; }
.document-content code { color: var(--warn); font-family: ui-monospace, "SFMono-Regular", Menlo, monospace; font-size: .86em; }

.activity-grid { display: grid; gap: 3rem; }
.activity-grid h3 { margin: 0 0 1rem; color: var(--text-soft); font-size: .72rem; letter-spacing: .12em; text-transform: uppercase; }
.cycles { border-top: 1px solid var(--line-strong); }
.cycle { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: .7rem 1rem; padding: 1rem 0; border-bottom: 1px solid var(--line); }
.cycle time { grid-column: 1 / -1; color: var(--text-faint); font-size: .66rem; font-variant-numeric: tabular-nums; }
.cycle h4 { margin: 0; font-size: .9rem; }.cycle p { margin: .35rem 0 0; color: var(--text-faint); font-size: .76rem; line-height: 1.55; }
.badge { align-self: start; border: 1px solid currentColor; color: var(--text-faint); padding: .25rem .4rem; font-size: .56rem; letter-spacing: .07em; text-transform: uppercase; }
.badge.accepted { color: var(--good); }.badge.rejected, .badge.infra_void { color: var(--bad); }.badge.running { color: var(--signal); }
.events { list-style: none; margin: 0; padding: 0; max-height: 30rem; overflow: auto; scrollbar-color: var(--line-strong) transparent; border-top: 1px solid var(--line-strong); }
.events li:not(.empty) { display: grid; grid-template-columns: 5.2rem 7rem minmax(0, 1fr); gap: .6rem; padding: .65rem 0; border-bottom: 1px dotted var(--line); font-size: .67rem; }
.events time { color: var(--text-faint); font-variant-numeric: tabular-nums; }.events b { color: var(--signal); }.events code { color: var(--text-faint); font: inherit; word-break: break-word; }
.live-mark { color: var(--bad); margin-left: .5rem; font-size: .58rem; letter-spacing: .15em; }
.backlog-drawer { margin-top: 2rem; border-top: 1px solid var(--line-strong); border-bottom: 1px solid var(--line-strong); }
.backlog-drawer summary { min-height: 3.5rem; display: flex; align-items: center; cursor: pointer; color: var(--text-soft); font-size: .78rem; }
.backlog { list-style: none; padding: 0 0 1rem; margin: 0; counter-reset: queue; }
.backlog li { counter-increment: queue; padding: .8rem 0; border-top: 1px solid var(--line); }
.backlog li::before { content: counter(queue, decimal-leading-zero); color: var(--signal); font-family: var(--display); margin-right: .6rem; }.backlog strong { font-size: .8rem; }.backlog small { display: block; margin: .25rem 0 0 2rem; color: var(--text-faint); font-size: .68rem; }

.chat-layout { display: grid; gap: 2.5rem; }
.chat-layout > div:first-child p { max-width: 48ch; color: var(--text-soft); line-height: 1.7; }
.chat-log { min-height: 12rem; max-height: 28rem; overflow: auto; border-top: 1px solid var(--line-strong); padding-top: 1rem; }
.message { max-width: 85%; margin: 0 0 1.2rem; }
.message b { display: block; margin-bottom: .3rem; color: var(--signal); font-size: .62rem; letter-spacing: .12em; }.message p { margin: 0; color: var(--text-soft); white-space: pre-wrap; line-height: 1.65; }
.message.user { margin-left: auto; padding-left: 1rem; border-left: 2px solid var(--signal); }
.chat-form { display: grid; gap: .7rem; margin-top: 1.5rem; }
.chat-form label { color: var(--text-faint); font-size: .66rem; letter-spacing: .1em; }
.chat-form textarea, .login-box input { width: 100%; border: 1px solid var(--line-strong); border-radius: 0; background: var(--surface); color: var(--text); padding: .9rem; resize: vertical; }
.chat-form button, .login-box button { min-height: 3.2rem; border: 1px solid var(--signal); background: var(--signal); color: var(--ground-deep); cursor: pointer; padding: .75rem 1.2rem; font-weight: 700; }
.chat-form button:hover, .login-box button:hover { background: var(--text); border-color: var(--text); }
.chat-form button[disabled] { opacity: .5; cursor: wait; }
.quiet-button { min-height: 2.75rem; border: 0; background: transparent; color: var(--text-faint); cursor: pointer; padding: .4rem 0; text-align: left; text-decoration: underline; text-underline-offset: .25rem; }
.quiet-button:hover { color: var(--text); }
footer { min-height: 5rem; display: flex; justify-content: space-between; align-items: center; gap: 1rem; padding: 1rem clamp(1rem, 5vw, 5rem) max(1rem, env(safe-area-inset-bottom)); color: var(--text-faint); font-size: .6rem; letter-spacing: .13em; }
.toast { position: fixed; right: 1rem; bottom: max(1rem, env(safe-area-inset-bottom)); z-index: 15; max-width: min(30rem, calc(100vw - 2rem)); background: var(--text); color: var(--ground-deep); padding: .9rem 1rem; opacity: 0; transform: translateY(.6rem); pointer-events: none; transition: opacity 180ms var(--ease), transform 180ms var(--ease); }
.toast.show { opacity: 1; transform: none; }

.login-body { min-height: 100vh; display: grid; place-items: center; padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left); background: var(--ground-deep); }
.login-shell { width: min(92rem, 100%); min-height: 100vh; display: grid; background: var(--ground); }
.login-manifesto { position: relative; min-height: 34rem; overflow: hidden; padding: clamp(2rem, 7vw, 7rem); display: flex; flex-direction: column; justify-content: space-between; border-bottom: 1px solid var(--line); }
.manifest-number { position: absolute; right: -2%; top: 2%; color: var(--surface-high); font-family: var(--display); font-size: clamp(14rem, 42vw, 34rem); line-height: .8; user-select: none; }
.login-manifesto > div, .login-manifesto ol { position: relative; z-index: 1; }
.login-manifesto h1 { max-width: 15ch; font-size: clamp(2.8rem, 6vw, 6rem); }
.login-manifesto > div > p:last-child { max-width: 52ch; margin: 2rem 0 0; color: var(--text-soft); line-height: 1.75; }
.login-manifesto ol { display: grid; gap: .6rem; list-style: none; padding: 0; margin: 3rem 0 0; color: var(--text-soft); font-size: .76rem; }
.login-manifesto li { border-top: 1px solid var(--line); padding-top: .7rem; }.login-manifesto li span { color: var(--signal); margin-right: .8rem; font-family: var(--display); }
.login-box { padding: clamp(2rem, 6vw, 6rem); display: flex; flex-direction: column; justify-content: center; gap: clamp(2rem, 5vw, 4rem); background: var(--surface); }
.login-box h2 { font-size: clamp(2.1rem, 4vw, 4rem); }
.login-box form { display: grid; gap: .75rem; }.login-box label { color: var(--text-soft); font-size: .75rem; }.login-box input { min-height: 3.2rem; background: var(--ground); }
.login-box small { max-width: 44ch; color: var(--text-faint); line-height: 1.6; }.login-error { margin: 0; color: var(--bad); font-size: .78rem; }

.enter { animation: enter 650ms var(--ease) both; animation-delay: calc(var(--i, 0) * 55ms); }
@keyframes enter { from { opacity: 0; transform: translateY(.7rem); } to { opacity: 1; transform: none; } }

@media (min-width: 42rem) {
  .current-facts, .health-line { grid-template-columns: repeat(3, 1fr); }
  .section-title-row { flex-direction: row; justify-content: space-between; align-items: flex-end; }
  .milestone { grid-template-columns: 3rem minmax(0, 1fr) auto; gap: 1rem 1.5rem; }
  .document-browser { grid-template-columns: 13rem minmax(14rem, 18rem) minmax(0, 1fr); }
  .folder-tree, .document-list { border-bottom: 0; border-right: 1px solid var(--line); padding: 1rem .8rem; }
  .document-content { padding: clamp(2rem, 5vw, 4rem); }
  .chat-form { grid-template-columns: 1fr auto; align-items: end; }.chat-form label { grid-column: 1 / -1; }.chat-form button { min-width: 10rem; }
}

@media (min-width: 64rem) {
  .shell { display: grid; grid-template-columns: var(--rail) minmax(0, 1fr); }
  .ops-rail { position: sticky; top: 0; height: 100vh; display: flex; flex-direction: column; padding: 2rem clamp(1.4rem, 2.5vw, 2.4rem); border-right: 1px solid var(--line); border-bottom: 0; }
  .rail-state { margin-top: 3rem; }
  .rail-nav { display: grid; margin-top: 3rem; }
  .rail-nav a { display: grid; grid-template-columns: 2.2rem 1fr; align-items: center; min-height: 2.7rem; border-top: 1px solid var(--line); color: var(--text-faint); text-decoration: none; font-size: .72rem; }
  .rail-nav a span { color: var(--signal); font-family: var(--display); }
  .rail-nav a:hover { color: var(--text); padding-left: .25rem; }
  .rail-controls { grid-template-columns: 1fr; margin-top: auto; }
  .rail-foot { display: grid; grid-template-columns: 1fr 1fr; gap: .7rem; margin-top: 1.4rem; border-top: 1px solid var(--line); padding-top: 1rem; }
  .rail-foot span, .rail-foot strong { display: block; }.rail-foot span { color: var(--text-faint); font-size: .56rem; letter-spacing: .1em; }.rail-foot strong { margin-top: .2rem; font-size: .7rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  .rail-foot form { display: contents; }
  .mission, .current-work, .progress-section, .documents-section, .activity-section, .chat-section { padding-inline: clamp(3rem, 6vw, 7rem); }
  .mission { min-height: 92vh; }
  .progress-axis { margin-left: 12%; }
  .activity-grid { grid-template-columns: minmax(0, 1.1fr) minmax(22rem, .9fr); }
  .chat-layout { grid-template-columns: minmax(18rem, .6fr) minmax(0, 1.4fr); gap: clamp(3rem, 7vw, 8rem); }
  .login-shell { min-height: min(52rem, 100vh); grid-template-columns: minmax(0, 1.35fr) minmax(24rem, .65fr); }
  .login-manifesto { min-height: inherit; border-right: 1px solid var(--line); border-bottom: 0; }
}

@media (max-width: 35rem) {
  .topline span:first-child { display: none; }
  .rail-controls { grid-template-columns: 1fr; }
  .ticket-head { display: grid; }.status-chip { width: fit-content; }
  .events li:not(.empty) { grid-template-columns: 4.8rem minmax(0, 1fr); }.events code { grid-column: 1 / -1; }
  footer { flex-direction: column; align-items: flex-start; }
}
@media (pointer: coarse) { button, .quiet-button, .rail-nav a { min-height: 2.75rem; } }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; } }