:root {
  --paper: #f4f4f1;
  --ink: #1a1a1a;
  --muted: #8a8a85;
  --accent: #21ba5a;
  --error: #c0392b;
  --placeholder: #b5b5b0;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  min-height: 100%;
  background: var(--paper);
}

body {
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 14px;
  color: var(--ink);
}

a {
  color: var(--ink);
}

a:hover {
  color: var(--accent);
}

button,
input {
  font-family: inherit;
  font-size: inherit;
}

input::placeholder {
  color: var(--placeholder);
}

.app {
  min-height: 100dvh;
  height: 100dvh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  background: var(--paper);
}

.header,
.footer {
  display: flex;
  align-items: center;
}

.header {
  justify-content: space-between;
  padding: 22px 36px;
  border-bottom: 1px solid var(--ink);
  letter-spacing: 0.02em;
}

.footer {
  gap: 28px;
  padding: 20px 36px;
  border-top: 1px solid var(--ink);
  font-size: 13px;
}

.hint {
  border: none;
  background: none;
  padding: 0;
  color: var(--ink);
  cursor: pointer;
}

.hint:hover,
.hint:focus-visible {
  color: var(--accent);
}

.hint:focus-visible,
.field:focus-visible,
.submit:focus-visible,
.case:focus-visible,
.brief-link:focus-visible {
  outline: 1px solid var(--accent);
  outline-offset: 2px;
}

.main {
  flex: 1;
}

.main-login,
.main-case {
  display: flex;
  align-items: center;
  padding: 0 0 0 12%;
}

.main-home {
  padding: 64px 12% 40px;
}

.case-col {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.login-form {
  display: flex;
  flex-direction: column;
  gap: 18px;
  width: 340px;
}

.title-row {
  display: flex;
  align-items: baseline;
  gap: 14px;
}

.title-row-case {
  gap: 16px;
}

.prompt {
  color: var(--accent);
  font-weight: 700;
}

.prompt-lg {
  font-size: 26px;
}

.prompt-xl {
  font-size: 30px;
}

.prompt-xxl {
  font-size: 32px;
}

h1 {
  margin: 0;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.h-login {
  font-size: 26px;
}

.h-home {
  font-size: 30px;
}

.h-case {
  font-size: 32px;
}

.subtitle {
  margin: 0 0 8px 30px;
  color: var(--muted);
}

.role {
  margin: 10px 0 0 34px;
  color: var(--muted);
}

.bio {
  margin: 28px 0 0 34px;
  max-width: 640px;
  line-height: 1.75;
  text-wrap: pretty;
}

.case-kicker {
  margin: 0 0 10px 38px;
  color: var(--muted);
  font-size: 16px;
}

.cases {
  margin: 56px 0 0 34px;
}

.ls {
  color: var(--muted);
  font-size: 12px;
  margin-bottom: 14px;
}

.label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-left: 30px;
}

.label span {
  color: var(--muted);
  font-size: 12px;
}

.field {
  border: 1px solid var(--ink);
  background: var(--paper);
  padding: 10px 12px;
  color: var(--ink);
  outline: none;
  border-radius: 0;
}

.error {
  margin-left: 30px;
  color: var(--error);
  font-size: 12px;
}

.submit {
  margin-left: 30px;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: var(--paper);
  padding: 10px 12px;
  cursor: pointer;
  text-align: left;
  border-radius: 0;
}

.submit:hover {
  background: var(--accent);
  border-color: var(--accent);
}

.case {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  width: 100%;
  max-width: 640px;
  border: 1px solid var(--ink);
  background: transparent;
  padding: 18px 20px;
  color: var(--ink);
  cursor: pointer;
  text-align: left;
  border-radius: 0;
}

.case:hover,
.case:focus-visible {
  background: var(--ink);
  color: var(--paper);
}

.arrow {
  color: var(--accent);
}

.term {
  margin-left: 38px;
  font-size: 14px;
  display: flex;
  align-items: center;
}

.typed-line {
  display: inline;
}

.typed-line .cursor {
  visibility: hidden;
}

.typed-line.is-active .cursor {
  visibility: visible;
}

.main-slide {
  display: flex;
  align-items: flex-start;
  padding: 36px 8% 28px;
}

.slide {
  width: 100%;
  max-width: 1120px;
}

.target {
  margin: 8px 0 0 38px;
  max-width: 720px;
}

.target-label,
.panel-cmd,
.help-cmd,
.panel-note,
.dim {
  color: var(--muted);
}

.target-label,
.panel-cmd,
.help-cmd {
  font-size: 12px;
}

.target p {
  margin: 8px 0 0;
  line-height: 1.6;
}

.slide-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin: 28px 0 0 38px;
}

.slide-grid-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.slide-grid-4 .panel-q {
  font-size: 13px;
  letter-spacing: 0.03em;
}

.panel {
  border: 1px solid var(--ink);
  padding: 16px 18px 18px;
  min-width: 0;
}

.panel-q {
  margin: 8px 0 16px;
  font-size: 14px;
  font-weight: 500;
  line-height: 1.45;
}

.panel-note {
  margin: 0 0 12px;
  font-size: 12px;
}

.rows {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.slide-list {
  margin: 28px 0 0 38px;
  max-width: 820px;
}

.slide-list .rows {
  margin-top: 12px;
  gap: 14px;
  font-size: 18px;
}

.slide-quote {
  margin: 36px 0 0 38px;
  max-width: 820px;
  border-left: 2px solid var(--accent);
  padding: 4px 0 4px 18px;
}

.slide-quote p {
  margin: 8px 0 0;
  font-size: 20px;
  font-weight: 500;
  line-height: 1.45;
}

.main-slide-flow {
  overflow: auto;
  justify-content: center;
  padding-top: 20px;
}

.flow {
  width: 100%;
  max-width: 760px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.flow-title {
  margin: 0 0 18px;
  font-size: 16px;
  letter-spacing: 0.04em;
  text-align: center;
}

.flow-dash {
  color: var(--accent);
}

.flow-node {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.flow-muted {
  color: var(--muted);
  font-size: 11px;
  text-align: center;
  line-height: 1.35;
}

.flow-box {
  border: 1px solid var(--ink);
  padding: 8px 16px 10px;
  min-width: 220px;
  text-align: center;
}

.flow-box strong {
  display: block;
  font-size: 12px;
  letter-spacing: 0.04em;
  margin-bottom: 4px;
}

.flow-box span {
  display: block;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.4;
}

.flow-core {
  background: var(--ink);
  color: #fff;
  min-width: 260px;
}

.flow-core span {
  color: #c8c8c4;
}

.flow-edge {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 1px;
}

.flow-stem {
  display: block;
  width: 1px;
  height: 18px;
  background: var(--ink);
}

.flow-arrow {
  display: block;
  width: 0;
  height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 6px solid var(--accent);
}

.flow-label {
  position: absolute;
  left: 10px;
  top: 2px;
  color: var(--muted);
  font-size: 11px;
  white-space: nowrap;
}

.flow-fork {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  width: 100%;
  max-width: 680px;
  padding: 0 8px 8px;
}

.flow-rail {
  position: absolute;
  top: 0;
  left: calc(16.666% + 8px);
  right: calc(16.666% + 8px);
  height: 1px;
  background: var(--ink);
}

.flow-rail-end {
  top: auto;
  bottom: 0;
}

.flow-col {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 100%;
}

.flow-fill {
  display: block;
  flex: 1;
  width: 1px;
  min-height: 16px;
  background: var(--ink);
}

.flow-col .flow-node {
  margin: 2px 0;
}

.row {
  display: flex;
  gap: 10px;
  line-height: 1.45;
}

.row .typed-line {
  flex: 1;
  min-width: 0;
}

.num {
  color: var(--accent);
  flex: 0 0 28px;
  font-weight: 700;
}

.help {
  position: fixed;
  right: 36px;
  bottom: 72px;
  width: 220px;
  border: 1px solid var(--ink);
  background: var(--paper);
  padding: 14px 16px;
}

.help-cmd {
  margin-bottom: 10px;
}

.help .num {
  flex: 0 0 20px;
}

.main-brief {
  overflow: auto;
  padding: 36px 8% 40px;
}

.brief {
  width: 100%;
  max-width: 820px;
}

.brief-sec {
  margin: 32px 0 0 38px;
}

.brief-cmd {
  color: var(--muted);
  font-size: 12px;
  margin-bottom: 10px;
}

.brief-sec p {
  margin: 0 0 12px;
  line-height: 1.7;
  text-wrap: pretty;
}

.brief-label {
  margin: 16px 0 8px;
  color: var(--muted);
  font-size: 12px;
}

.brief-list {
  margin: 0 0 12px;
  padding: 0 0 0 18px;
  line-height: 1.7;
}

.brief-list li + li {
  margin-top: 8px;
}

.brief-link {
  color: var(--ink);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.brief-link:hover,
.brief-link:focus-visible {
  color: var(--accent);
}

.brief .dim {
  display: inline-block;
  min-width: 84px;
  margin-right: 8px;
}

.cursor {
  display: inline-block;
  width: 9px;
  height: 17px;
  background: var(--ink);
  margin-left: 2px;
  animation: blink 1.1s step-end infinite;
}

@keyframes blink {
  0%,
  49% {
    opacity: 1;
  }
  50%,
  100% {
    opacity: 0;
  }
}

@media (max-width: 1100px) {
  .slide-grid-4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  .header,
  .footer {
    padding-left: 20px;
    padding-right: 20px;
  }

  .main-login,
  .main-case,
  .main-slide,
  .main-brief {
    padding: 32px 20px;
  }

  .target,
  .slide-grid,
  .slide-list,
  .slide-quote,
  .brief-sec {
    margin-left: 0;
  }

  .slide-grid,
  .slide-grid-4 {
    grid-template-columns: 1fr;
  }

  .flow-fork {
    grid-template-columns: 1fr;
    gap: 18px;
    padding-bottom: 0;
  }

  .flow-rail,
  .flow-fill {
    display: none;
  }

  .help {
    right: 20px;
    left: 20px;
    width: auto;
  }

  .main-home {
    padding: 40px 20px;
  }

  .login-form {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .cursor {
    animation: none;
  }
}