.lesson--code {
  --code-ink: #20212b;
  --code-muted: #626575;
  --code-line: #e5e2ed;
  --code-paper: #fffdf9;
  --code-soft: #f7f4fb;
  --code-violet: #7257a8;
  --code-violet-soft: #eee8fa;
  --code-mint: #dff4ea;
  --code-amber: #fff1cd;
  color: var(--code-ink);
  font-family: Pretendard, "Noto Sans KR", system-ui, sans-serif;
  font-size: 1rem;
  line-height: 1.78;
}

.lesson--code *,
.lesson--code *::before,
.lesson--code *::after {
  box-sizing: border-box;
}

.lesson--code .lesson-hero {
  margin: 0 0 2.5rem;
  padding: clamp(1.5rem, 4vw, 3rem);
  border: 1px solid #dcd3ec;
  border-radius: 1.5rem;
  background: linear-gradient(135deg, #fbf8ff 0%, #fffaf0 100%);
}

.lesson--code .lesson-kicker {
  margin: 0 0 .6rem;
  color: var(--code-violet);
  font-size: .78rem;
  font-weight: 800;
  letter-spacing: .13em;
}

.lesson--code .lesson-hero h1 {
  margin: 0;
  font-size: clamp(1.85rem, 4vw, 3.1rem);
  line-height: 1.22;
  word-break: keep-all;
}

.lesson--code .lesson-scope {
  margin: 1rem 0 0;
  color: var(--code-muted);
  font-weight: 650;
}

.lesson--code .lesson-section {
  margin: 0 0 4rem;
  scroll-margin-top: 5rem;
}

.lesson--code .file-section {
  padding-top: 1rem;
  border-top: 1px solid var(--code-line);
}

.lesson--code h2 {
  margin: 0 0 1.25rem;
  font-size: clamp(1.45rem, 3vw, 2rem);
  line-height: 1.35;
  word-break: keep-all;
}

.lesson--code h3 {
  margin: 2.4rem 0 .9rem;
  font-size: 1.22rem;
  line-height: 1.45;
}

.lesson--code h4 {
  margin: 2rem 0 .8rem;
  font-size: 1.08rem;
}

.lesson--code p {
  margin: .75rem 0;
}

.lesson--code :not(pre) > code {
  padding: .08em .34em;
  border-radius: .35em;
  background: #f0edf5;
  color: #4c386f;
  font-family: "Cascadia Code", Consolas, monospace;
  font-size: .92em;
  overflow-wrap: anywhere;
}

.lesson--code .code-walkthrough-title {
  padding-left: .8rem;
  border-left: .3rem solid var(--code-violet);
}

.lesson--code .code-panel {
  margin: .8rem 0 1rem;
  overflow: hidden;
  border: 1px solid #333641;
  border-radius: .9rem;
  background: #20222a;
  box-shadow: 0 .65rem 1.8rem rgba(31, 26, 46, .08);
}

.lesson--code .code-panel__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: .58rem .85rem;
  border-bottom: 1px solid #3b3e49;
  color: #d9d9e5;
  font-size: .8rem;
}

.lesson--code .copy-code {
  min-height: 2rem;
  padding: .25rem .68rem;
  border: 1px solid #606371;
  border-radius: .5rem;
  background: #2d3039;
  color: #fff;
  cursor: pointer;
}

.lesson--code .copy-code:hover,
.lesson--code .copy-code:focus-visible {
  border-color: #b79de9;
  outline: 2px solid transparent;
  background: #493b62;
}

.lesson--code pre {
  margin: 0;
  padding: 1rem 1.1rem 1.2rem;
  overflow-x: auto;
  color: #f5f3f8;
  font-family: "Cascadia Code", Consolas, monospace;
  font-size: clamp(.8rem, 1.7vw, .93rem);
  line-height: 1.65;
  tab-size: 4;
}

.lesson--code pre code {
  font: inherit;
  white-space: pre;
}

.lesson--code .code-disclosure {
  margin: .8rem 0 1.5rem;
  border: 1px solid var(--code-line);
  border-radius: .9rem;
  background: #faf9fc;
}

.lesson--code .code-disclosure > summary {
  padding: .85rem 1rem;
  color: #4d3a70;
  font-weight: 780;
  cursor: pointer;
}

.lesson--code .code-disclosure .code-panel {
  margin: 0;
  border-width: 1px 0 0;
  border-radius: 0 0 .9rem .9rem;
}

.lesson--code .explanation-grid,
.lesson--code .test-proof-grid,
.lesson--code .retype-contract,
.lesson--code .labeled-facts {
  display: grid;
  gap: .7rem;
  margin: 1rem 0;
}

.lesson--code .explanation-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.lesson--code .fact {
  min-width: 0;
  padding: .9rem 1rem;
  border: 1px solid var(--code-line);
  border-radius: .8rem;
  background: var(--code-paper);
}

.lesson--code .fact dt {
  margin: 0 0 .3rem;
  color: #5c438d;
  font-size: .86rem;
  font-weight: 800;
}

.lesson--code .fact dd {
  margin: 0;
}

.lesson--code .explanation-grid .fact:last-child {
  grid-column: 1 / -1;
  background: var(--code-mint);
}

.lesson--code .test-proof-grid {
  padding: 1rem;
  border: 1px solid #bcdcca;
  border-radius: 1rem;
  background: #f4fbf7;
}

.lesson--code .test-proof-grid .fact:nth-child(-n+3) dt::before {
  display: inline-grid;
  width: 1.5rem;
  height: 1.5rem;
  margin-right: .35rem;
  place-items: center;
  border-radius: 50%;
  background: #d6eee1;
  color: #275942;
}

.lesson--code .test-proof-grid .fact:nth-child(1) dt::before { content: "A"; }
.lesson--code .test-proof-grid .fact:nth-child(2) dt::before { content: "A"; }
.lesson--code .test-proof-grid .fact:nth-child(3) dt::before { content: "A"; }

.lesson--code .retype-contract {
  padding: 1rem;
  border: 1px solid #e7c66f;
  border-radius: 1rem;
  background: #fffaf0;
}

.lesson--code .retype-contract .fact {
  border-color: #efddb0;
  background: #fffdf7;
}

.lesson--code .dialogue {
  margin: 1.1rem 0 2rem;
  padding: 1rem;
  border: 1px solid #ded8e8;
  border-radius: 1rem;
  background: var(--code-soft);
}

.lesson--code .dialogue__eyebrow {
  margin: 0 0 .7rem;
  color: var(--code-muted);
  font-size: .78rem;
  font-weight: 800;
  letter-spacing: .06em;
}

.lesson--code .dialogue__turns {
  display: grid;
  gap: .55rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.lesson--code .dialogue__turn {
  display: grid;
  grid-template-columns: 4.2rem minmax(0, 1fr);
  gap: .65rem;
  align-items: start;
  padding: .65rem .75rem;
  border-radius: .7rem;
  background: rgba(255, 255, 255, .82);
}

.lesson--code .dialogue__speaker {
  color: #5b4389;
}

.lesson--code .dialogue__turn--nijika .dialogue__speaker { color: #9b6615; }
.lesson--code .dialogue__turn--ryo .dialogue__speaker { color: #39667a; }
.lesson--code .dialogue__turn--kita .dialogue__speaker { color: #a1465c; }

.lesson--code .concept-figure {
  margin: 1.5rem 0 2rem;
  padding: .8rem;
  border: 1px solid var(--code-line);
  border-radius: 1rem;
  background: #fff;
}

.lesson--code .concept-figure img {
  display: block;
  width: min(100%, 62rem);
  height: auto;
  margin-inline: auto;
  border-radius: .65rem;
}

.lesson--code .concept-figure figcaption {
  margin-top: .65rem;
  color: var(--code-muted);
  font-size: .9rem;
  text-align: center;
}

.lesson--code .table-scroll {
  margin: 1rem 0 1.6rem;
  overflow-x: auto;
  border: 1px solid var(--code-line);
  border-radius: .9rem;
}

.lesson--code table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
}

.lesson--code th,
.lesson--code td {
  padding: .7rem .8rem;
  border-bottom: 1px solid var(--code-line);
  text-align: left;
  vertical-align: top;
}

.lesson--code th {
  background: #f2eef8;
  color: #493667;
  font-size: .88rem;
}

.lesson--code .contract-table td:first-child {
  width: 8.5rem;
  font-weight: 760;
}

.lesson--code .bullet-list,
.lesson--code .numbered-list {
  padding-left: 1.4rem;
}

.lesson--code li + li {
  margin-top: .38rem;
}

@media (max-width: 720px) {
  .lesson--code .explanation-grid {
    grid-template-columns: 1fr;
  }

  .lesson--code .explanation-grid .fact:last-child {
    grid-column: auto;
  }

  .lesson--code .dialogue__turn {
    grid-template-columns: 1fr;
    gap: .15rem;
  }

  .lesson--code .contract-table td:first-child {
    width: auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  .lesson--code * {
    scroll-behavior: auto !important;
  }
}

@media print {
  .lesson--code .copy-code { display: none; }
  .lesson--code .code-disclosure > summary { display: none; }
  .lesson--code .code-disclosure:not([open]) > :not(summary) { display: block; }
  .lesson--code .lesson-section { break-inside: auto; }
  .lesson--code .code-panel,
  .lesson--code .dialogue,
  .lesson--code .fact { break-inside: avoid; }
}


/* W5식 대화 카드: 이름만 두지 않고 화자 초상을 코드 바로 옆에 둔다. */
.lesson--code .lesson-hero h1 { color: #172a46; }
.lesson--code .dialogue { display: block; }
body.code-wrap .lesson--code pre code {
  white-space: inherit;
  overflow-wrap: anywhere;
  word-break: break-word;
}
.lesson--code .dialogue__turn {
  grid-template-columns: 2.7rem 4.2rem minmax(0, 1fr);
  align-items: center;
}
.lesson--code .dialogue__portrait {
  width: 2.55rem;
  height: 2.55rem;
  border-radius: 50%;
  object-fit: cover;
  background: #fff;
  border: 1px solid #d8dfea;
}
@media (max-width: 720px) {
  .lesson--code .dialogue__turn {
    grid-template-columns: 2.45rem minmax(0, 1fr);
    gap: .35rem .55rem;
  }
  .lesson--code .dialogue__portrait { width: 2.35rem; height: 2.35rem; grid-row: 1 / span 2; }
  .lesson--code .dialogue__speaker { grid-column: 2; }
  .lesson--code .dialogue__speech { grid-column: 2; }
}