/* FRM 조립 교안 지도 — 토큰은 :root 에 한 번, 다크는 토큰만 다시 정의한다 */
:root {
  --ground: #f4f6f9;
  --surface: #ffffff;
  --surface-2: #eef1f5;
  --surface-3: #e3e8ef;
  --ink: #121620;
  --ink-2: #4a5263;
  --muted: #7d8596;
  --hair: #dce1e9;
  --axis: #b9c0cc;
  --accent: #2a78d6;
  --accent-ink: #1c5cab;
  --good: #0ca30c;
  --good-ink: #006300;
  --warn: #fab219;
  --warn-ink: #8a5a00;
  --t-daejo: #2a78d6;   /* [대조]  slot 1 blue */
  --t-magam: #eb6834;   /* [마감]  slot 2 orange */
  --t-jeong: #1baf7a;   /* [정체]  slot 3 aqua */
  --t-yecheuk: #eda100; /* [예측md] slot 4 yellow */
  --t-option: #e87ba4;  /* [옵션]  slot 5 magenta */
  --t-chuk: #008300;    /* [축적]  slot 6 green */
  --t-son: #4a3aa7;     /* [손md]  slot 7 violet */
  --t-hamjeong: #e34948;/* [함정]  slot 8 red */
  --shadow: 0 1px 2px rgba(18, 22, 32, .06), 0 8px 24px rgba(18, 22, 32, .08);
  --serif: "Noto Serif KR", "Apple SD Gothic Neo", serif;
  --sans: "IBM Plex Sans KR", "Apple SD Gothic Neo", "Malgun Gothic", system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --ground: #0e1116; --surface: #161a21; --surface-2: #1c212a; --surface-3: #252b36;
    --ink: #eef1f6; --ink-2: #b6bdca; --muted: #8a91a1; --hair: #2a303b; --axis: #3a414d;
    --accent: #3987e5; --accent-ink: #86b6ef; --good-ink: #0ca30c; --warn-ink: #fab219;
    --t-daejo: #3987e5; --t-magam: #d95926; --t-jeong: #199e70; --t-yecheuk: #c98500;
    --t-option: #d55181; --t-chuk: #008300; --t-son: #9085e9; --t-hamjeong: #e66767;
    --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 12px 32px rgba(0, 0, 0, .45);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --ground: #0e1116; --surface: #161a21; --surface-2: #1c212a; --surface-3: #252b36;
  --ink: #eef1f6; --ink-2: #b6bdca; --muted: #8a91a1; --hair: #2a303b; --axis: #3a414d;
  --accent: #3987e5; --accent-ink: #86b6ef; --good-ink: #0ca30c; --warn-ink: #fab219;
  --t-daejo: #3987e5; --t-magam: #d95926; --t-jeong: #199e70; --t-yecheuk: #c98500;
  --t-option: #d55181; --t-chuk: #008300; --t-son: #9085e9; --t-hamjeong: #e66767;
  --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 12px 32px rgba(0, 0, 0, .45);
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-padding-top: 64px; }
body {
  margin: 0; background: var(--ground); color: var(--ink);
  font: 15px/1.6 var(--sans); -webkit-font-smoothing: antialiased;
  word-break: keep-all; overflow-wrap: break-word;  /* 한국어는 어절 단위로 줄을 바꾼다 */
}
a { color: var(--accent-ink); }
code, .mono { font-family: var(--mono); font-size: .92em; }
code { background: var(--surface-2); padding: .05em .35em; border-radius: 4px; }
button { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
@media (prefers-reduced-motion: reduce) { * { transition: none !important; scroll-behavior: auto !important; } }

.wrap { max-width: 1180px; margin: 0 auto; padding-inline: 20px; }

/* ---------------------------------------------------------------- 머리 */
.masthead { padding-block: 40px 20px; }
.eyebrow { font: 500 12px/1 var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--muted); }
.masthead h1 {
  font: 700 clamp(28px, 4.2vw, 44px)/1.18 var(--serif); margin: 12px 0 10px; text-wrap: balance; letter-spacing: -.01em;
}
.masthead .lede { color: var(--ink-2); max-width: 68ch; margin: 0; font-size: 16px; }
.lede b { color: var(--ink); font-weight: 600; }
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; margin-top: 24px; }
.stat { background: var(--surface); border: 1px solid var(--hair); border-radius: 10px; padding: 12px 14px; }
.stat .v { font: 600 26px/1.1 var(--sans); }
.stat .v small { font-size: 13px; color: var(--muted); font-weight: 500; margin-left: 4px; }
.stat .k { color: var(--muted); font-size: 12.5px; margin-top: 4px; }

nav.tabs {
  position: sticky; top: env(safe-area-inset-top, 0px); z-index: 20; background: color-mix(in srgb, var(--ground) 88%, transparent);
  backdrop-filter: blur(8px); border-bottom: 1px solid var(--hair);
}
nav.tabs .wrap { display: flex; gap: 4px; overflow-x: auto; padding-block: 8px; scrollbar-width: none; }
nav.tabs a {
  white-space: nowrap; text-decoration: none; color: var(--ink-2); padding: 6px 12px; border-radius: 999px; font-size: 14px;
}
nav.tabs a:hover { background: var(--surface-2); color: var(--ink); }
nav.tabs a.on { background: var(--ink); color: var(--ground); }

/* ---------------------------------------------------------------- 절 */
section.block { padding-block: 36px 12px; }
.block-head { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 8px 24px; margin-bottom: 14px; }
.block-head h2 { font: 700 24px/1.25 var(--serif); margin: 0; text-wrap: balance; }
.block-head p { margin: 4px 0 0; color: var(--ink-2); max-width: 72ch; }
.panel { background: var(--surface); border: 1px solid var(--hair); border-radius: 12px; padding: 16px; }
.chart { width: 100%; overflow: hidden; }
.chart svg { display: block; width: 100%; height: auto; overflow: visible; }
.note { color: var(--muted); font-size: 13px; }

.legend { display: flex; flex-wrap: wrap; gap: 6px 16px; font-size: 13px; color: var(--ink-2); margin: 10px 0 0; padding: 0; list-style: none; }
.legend li { display: inline-flex; align-items: center; gap: 6px; }
.key { width: 12px; height: 12px; border-radius: 3px; display: inline-block; flex: none; }
.key.line { height: 2px; width: 16px; border-radius: 1px; }

/* 학기 카드 */
.sem-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 12px; margin-top: 14px; }
.sem-card {
  text-align: left; background: var(--surface); border: 1px solid var(--hair); border-radius: 12px; padding: 14px;
  cursor: pointer; display: flex; flex-direction: column; gap: 6px;
}
.sem-card:hover { border-color: var(--accent); }
.sem-card .n { font: 500 12px/1 var(--mono); color: var(--muted); letter-spacing: .06em; }
.sem-card h3 { margin: 0; font: 600 16px/1.35 var(--sans); }
.sem-card .meta { font-size: 13px; color: var(--ink-2); }
.sem-card .gate { font-size: 12.5px; color: var(--ink-2); border-top: 1px solid var(--hair); padding-top: 8px; margin-top: auto; }
.sem-card .gate b { color: var(--ink); }

/* 학기별 */
.seg { display: inline-flex; flex-wrap: wrap; gap: 4px; background: var(--surface-2); padding: 4px; border-radius: 10px; }
.seg button { border: 0; background: transparent; padding: 6px 12px; border-radius: 7px; cursor: pointer; color: var(--ink-2); font-size: 14px; }
.seg button[aria-pressed="true"] { background: var(--surface); color: var(--ink); box-shadow: var(--shadow); }
.sem-intro { display: grid; grid-template-columns: 1fr; gap: 10px; margin: 14px 0; }
.sem-intro .gatebox { background: var(--surface); border: 1px solid var(--hair); border-radius: 10px; padding: 12px 14px; font-size: 14px; color: var(--ink-2); }
.sem-intro .gatebox b { color: var(--ink); }
.rows { display: flex; flex-direction: column; gap: 8px; }
.row {
  display: grid; grid-template-columns: 76px minmax(0, 1fr); gap: 4px 14px; align-items: start;
  background: var(--surface); border: 1px solid var(--hair); border-radius: 12px; padding: 12px 14px; cursor: pointer; text-align: left; width: 100%;
}
.row:hover { border-color: var(--accent); }
.row .num { font: 500 13px/1.3 var(--mono); color: var(--muted); }
.row .num b { display: block; font: 600 22px/1.1 var(--sans); color: var(--ink); }
.row h3 { margin: 0; font: 600 16px/1.35 var(--sans); display: flex; flex-wrap: wrap; align-items: center; gap: 6px; }
.row h3 .code { font: 500 12.5px/1 var(--mono); color: var(--muted); }
.row .intro { color: var(--ink-2); font-size: 13.5px; margin: 4px 0 8px; }
.lane { display: grid; grid-template-columns: minmax(120px, 220px) minmax(0, 1fr); gap: 4px 10px; align-items: center; padding-block: 3px; }
.lane .lt { font-size: 13px; color: var(--ink-2); }
.lane .lt .mono { color: var(--muted); margin-right: 4px; }
.chips { display: flex; flex-wrap: wrap; gap: 3px; }
@media (max-width: 640px) {
  .row { grid-template-columns: 1fr; }
  .row .num b { display: inline; margin-right: 6px; }
  .lane { grid-template-columns: 1fr; }
}

.chip {
  width: 20px; height: 20px; border-radius: 5px; display: inline-grid; place-items: center;
  font: 600 10.5px/1 var(--sans); flex: none; cursor: default;
}
.chip.sm { width: 14px; height: 14px; border-radius: 3px; font-size: 8.5px; }
.badge {
  display: inline-flex; align-items: center; gap: 4px; font: 500 11.5px/1 var(--sans); padding: 4px 7px; border-radius: 999px;
  background: var(--surface-2); color: var(--ink-2); white-space: nowrap;
}
.badge.done { background: color-mix(in srgb, var(--good) 16%, var(--surface)); color: var(--good-ink); }
.badge.proto { background: color-mix(in srgb, var(--accent) 14%, var(--surface)); color: var(--accent-ink); }
.badge.gate { background: var(--ink); color: var(--ground); }
.badge.warn { background: color-mix(in srgb, var(--warn) 22%, var(--surface)); color: var(--warn-ink); }

/* 표 */
.tablewrap { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font-size: 13.5px; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--hair); vertical-align: top; }
th { color: var(--muted); font-weight: 500; font-size: 12.5px; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
details.tableview { margin-top: 10px; }
details.tableview summary { cursor: pointer; color: var(--ink-2); font-size: 13.5px; }

/* 셀 문법 */
.types { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 8px; }
.type { display: grid; grid-template-columns: 28px 1fr; gap: 10px; align-items: start; background: var(--surface); border: 1px solid var(--hair); border-radius: 10px; padding: 10px 12px; }
.type .chip { width: 28px; height: 28px; font-size: 13px; border-radius: 7px; }
.type b { font-family: var(--mono); font-weight: 500; font-size: 13px; }
.type p { margin: 2px 0 0; font-size: 13px; color: var(--ink-2); }
.strips { display: flex; flex-direction: column; gap: 14px; margin-top: 16px; }
.strip h4 { margin: 0 0 6px; font: 600 14px/1.4 var(--sans); }
.strip h4 .note { font-weight: 400; margin-left: 6px; }
.strip .chips { gap: 3px; }
.strip .chip { width: 26px; height: 26px; font-size: 11px; cursor: pointer; }

/* 툴팁 */
.tip {
  position: fixed; z-index: 60; pointer-events: none; max-width: 320px; background: var(--surface); color: var(--ink);
  border: 1px solid var(--hair); border-radius: 10px; padding: 10px 12px; box-shadow: var(--shadow); font-size: 13px; line-height: 1.45;
}
.tip .t1 { font-weight: 600; }
.tip .t2 { color: var(--ink-2); }
.tip .mono { color: var(--muted); }

/* 서랍 — 회차 상세 */
.scrim { position: fixed; inset: 0; background: rgba(8, 10, 14, .35); z-index: 70; }
aside.drawer {
  position: fixed; top: 0; right: 0; bottom: 0; width: min(720px, 100%); z-index: 80; background: var(--surface);
  border-left: 1px solid var(--hair); box-shadow: var(--shadow); overflow-y: auto;
  padding: calc(env(safe-area-inset-top, 0px) + 20px) 24px calc(env(safe-area-inset-bottom, 0px) + 40px);
}
.drawer .close { position: sticky; top: 0; float: right; border: 1px solid var(--hair); background: var(--surface); border-radius: 8px; padding: 4px 10px; cursor: pointer; }
.drawer .kicker { font: 500 12.5px/1 var(--mono); color: var(--muted); letter-spacing: .05em; }
.drawer h2 { font: 700 26px/1.25 var(--serif); margin: 8px 0 10px; text-wrap: balance; }
.drawer .badges { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 10px; }
.drawer h3 { font: 600 15px/1.3 var(--sans); margin: 22px 0 8px; padding-top: 14px; border-top: 1px solid var(--hair); }
.drawer p, .drawer li { color: var(--ink-2); }
.drawer p b, .drawer li b { color: var(--ink); }
.drawer .quote { border-left: 3px solid var(--accent); padding: 2px 0 2px 12px; color: var(--ink); margin: 6px 0; }
.drawer ol.steps { list-style: none; padding: 0; margin: 6px 0 0; display: flex; flex-direction: column; gap: 6px; }
.drawer ol.steps li { display: grid; grid-template-columns: 22px 1fr; gap: 10px; align-items: start; }
.drawer .lec { background: var(--surface-2); border-radius: 10px; padding: 10px 12px; margin-top: 10px; }
.drawer .lec h4 { margin: 0 0 6px; font: 600 14px/1.35 var(--sans); }
.drawer .lec h4 .mono { color: var(--muted); margin-right: 6px; }
.drawer .links { display: flex; flex-wrap: wrap; gap: 6px; }
.drawer .links button { border: 1px solid var(--hair); background: var(--surface); border-radius: 999px; padding: 3px 10px; cursor: pointer; font-size: 13px; }
.drawer .links button:hover { border-color: var(--accent); }
.drawer .flags li { font-size: 13.5px; }

footer { padding-block: 40px 60px; color: var(--muted); font-size: 13px; }
footer .wrap { border-top: 1px solid var(--hair); padding-top: 16px; }

/* ---------------------------------------------------------------- FRM 커버리지 */
.fills { display: grid; grid-template-columns: repeat(auto-fit, minmax(205px, 1fr)); gap: 12px; margin-top: 14px; }
.fills .fill-sem { background: var(--surface); border: 1px solid var(--hair); border-radius: 12px; padding: 14px; }
.fills h4 { margin: 0 0 6px; font-size: 14px; }
.fills ul { margin: 0; padding: 0; list-style: none; display: grid; gap: 4px; }
.fills li { font-size: 13px; color: var(--ink-2); display: grid; grid-template-columns: 4.2em minmax(0, 1fr); gap: 6px; }
.fills li .mono { color: var(--muted); }
.fills li button { all: unset; cursor: pointer; color: var(--ink); }
.fills li button:hover { color: var(--accent-ink); text-decoration: underline; }
.lane.added .lt::after { content: "보강"; margin-left: 6px; font: 500 10.5px/1 var(--mono); color: var(--accent-ink);
  border: 1px dashed var(--accent); border-radius: 4px; padding: 1px 4px; vertical-align: 1px; }
.lane.added .chips { box-shadow: inset 2px 0 0 var(--accent); padding-left: 6px; }
.badge.added { background: transparent; color: var(--accent-ink); box-shadow: inset 0 0 0 1px var(--accent); border-style: dashed; }
.drawer .fill-list { margin: 0; padding-left: 18px; font-size: 14px; }
.drawer .fill-list li { margin-block: 3px; }
.fills .note button { all: unset; cursor: pointer; color: var(--accent-ink); }
.fills .note button:hover { text-decoration: underline; }
.fills .note { margin: 10px 0 0; line-height: 1.7; }

/* 헌장·PRD — 마크다운 본문 */
details.charter summary { cursor: pointer; color: var(--ink-2); font-size: 14px; }
.prose { max-width: 82ch; margin-top: 10px; }
.prose h1 { font: 700 22px/1.3 var(--serif); margin: 18px 0 8px; }
.prose h2 { font: 700 19px/1.3 var(--serif); margin: 26px 0 8px; }
.prose h3 { font: 600 16px/1.35 var(--sans); margin: 18px 0 6px; }
.prose p, .prose li { color: var(--ink-2); font-size: 14.5px; line-height: 1.65; }
.prose table { display: block; overflow-x: auto; margin: 10px 0 14px; }
.prose blockquote { margin: 12px 0; padding: 8px 14px; border-left: 3px solid var(--hair); background: var(--surface-2); border-radius: 6px; }
.prose blockquote p { margin: 4px 0; }
.prose hr { border: 0; border-top: 1px solid var(--hair); margin: 24px 0; }
.prose pre { white-space: pre-wrap; font: 13px/1.55 var(--mono); }

/* ================================================================ 학습자 화면 (2026-11-07)
   상태판 · 공부 시작 · 읽기 쪽 · 회차 상세의 공부하기 상자. 색과 글꼴은 위의 토큰을 그대로 쓴다. */

/* ---------------------------------------------------------------- 상태판 — 회차 하나가 칸 하나 */
.board {
  margin-top: 22px; display: grid; gap: 10px; background: var(--surface); border: 1px solid var(--hair);
  border-radius: 12px; padding: 14px 16px;
}
.board-row { display: grid; grid-template-columns: 9.5rem minmax(0, 1fr) auto; gap: 6px 16px; align-items: center; }
.board-name { font-size: 13.5px; color: var(--ink-2); white-space: nowrap; }
.board-name b { color: var(--ink); font-weight: 600; margin-right: 6px; }
.tiles { display: flex; flex-wrap: wrap; gap: 3px; }
.tile { width: 14px; height: 14px; border-radius: 3px; display: inline-block; flex: none; }
a.tile:hover { outline: 2px solid var(--accent); outline-offset: 1px; }
.tile.s-final { background: var(--good); }
.tile.s-draft { background: color-mix(in srgb, var(--warn) 45%, var(--surface)); box-shadow: inset 0 0 0 1px var(--warn-ink); }
.tile.s-writing { background: repeating-linear-gradient(135deg, var(--warn) 0 2px, transparent 2px 4px); box-shadow: inset 0 0 0 1px var(--warn-ink); }
.tile.s-planned { box-shadow: inset 0 0 0 1px var(--muted); }
.board-count { font-size: 13px; color: var(--ink-2); white-space: nowrap; text-align: right; }
.board-count a { margin-left: 10px; font-weight: 600; }
.board-legend {
  list-style: none; margin: 2px 0 0; padding: 10px 0 0; border-top: 1px solid var(--hair);
  display: flex; flex-wrap: wrap; gap: 6px 20px; font-size: 13px; color: var(--ink-2);
}
.board-legend li { display: inline-flex; align-items: center; gap: 6px; }
.board-legend b { color: var(--ink); font-weight: 600; }

/* ---------------------------------------------------------------- 공부 시작 — 세 단계 */
.path { list-style: none; margin: 0 0 16px; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; align-items: start; }
.step {
  background: var(--surface); border: 1px solid var(--hair); border-radius: 12px; padding: 16px 18px;
  display: flex; flex-direction: column; gap: 8px; min-width: 0;
}
.step.first { border-color: var(--accent); box-shadow: inset 0 3px 0 var(--accent); }
.step-n { font: 700 30px/1 var(--serif); color: var(--accent-ink); }
.step h3 { margin: 0; font: 600 16.5px/1.35 var(--sans); }
.step p { margin: 0; color: var(--ink-2); font-size: 14px; line-height: 1.6; }
.step .q { font: 700 19px/1.45 var(--serif); color: var(--ink); text-wrap: balance; }
.step .go {
  margin-top: 4px; align-self: flex-start; text-decoration: none; font-weight: 600; font-size: 14px;
  color: var(--ground); background: var(--ink); padding: 7px 12px; border-radius: 8px;
}
.step .go:hover { background: var(--accent-ink); }
.step .nbpath {
  display: block; font-size: 12px; color: var(--ink-2); background: var(--surface-2); padding: 6px 8px;
  border-radius: 6px; overflow-wrap: anywhere;
}
@media (max-width: 860px) { .path { grid-template-columns: 1fr; } }

/* 안내 본문 (course/README.md) — 제목은 한 단계 내려 h3 부터 */
.startdoc { max-width: none; margin-top: 0; padding: 20px 24px; }
.startdoc > :first-child { margin-top: 0; }
.startdoc h3 { font: 700 19px/1.35 var(--serif); margin: 30px 0 8px; padding-top: 18px; border-top: 1px solid var(--hair); }
.startdoc p, .startdoc li { font-size: 15px; max-width: 75ch; }
.prose h4 { font: 600 15px/1.4 var(--sans); margin: 18px 0 6px; }
.prose pre { background: var(--surface-2); padding: 12px 14px; border-radius: 8px; overflow-x: auto; white-space: pre; }
.prose pre code { background: none; padding: 0; font-size: 13px; }
.prose ol, .prose ul { padding-left: 1.4em; }
.prose li + li { margin-top: 4px; }

/* 사이트에 없는 파일 — 내 컴퓨터에서 연다 */
.file code {
  margin-left: 5px; font-size: .82em; color: var(--ink-2); background: var(--surface-2);
  border: 1px dashed var(--axis); padding: 0 5px; border-radius: 4px; white-space: nowrap;
}
.where {
  margin-left: 5px; font-size: 11.5px; color: var(--warn-ink); white-space: nowrap;
  border: 1px solid color-mix(in srgb, var(--warn) 60%, var(--surface)); border-radius: 999px; padding: 0 6px;
}

/* ---------------------------------------------------------------- 회차 상세 — 공부하기 상자와 접기 */
.drawer .study { background: var(--surface-2); border-radius: 12px; padding: 12px 14px; margin: 14px 0 6px; }
.drawer .study > p { margin: 0 0 10px; color: var(--ink); }
.drawer .study ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.drawer .study li { display: grid; grid-template-columns: 6.5em minmax(0, 1fr); gap: 10px; font-size: 14px; align-items: start; }
.drawer .study li span { min-width: 0; }
.drawer .study code { overflow-wrap: anywhere; font-size: 12.5px; }
.drawer .study .note { display: block; margin: 6px 0 0; }
.drawer details.fold > summary {
  cursor: pointer; font: 600 15px/1.45 var(--sans); color: var(--ink); margin-top: 22px; padding-top: 14px;
  border-top: 1px solid var(--hair);
}
.drawer details.fold > summary:hover { color: var(--accent-ink); }
.drawer details.author > summary { color: var(--muted); }
.drawer details.author h4 { font: 600 14px/1.3 var(--sans); margin: 14px 0 6px; }
.badge.draft { background: color-mix(in srgb, var(--warn) 22%, var(--surface)); color: var(--warn-ink); }
.badge.plan { background: transparent; box-shadow: inset 0 0 0 1px var(--axis); color: var(--muted); }
.chips.pending { font-size: 12.5px; color: var(--muted); }

/* ---------------------------------------------------------------- 읽기 쪽 (site/read/) */
body.reading { background: var(--surface); }
.readwrap { max-width: 46rem; margin: 0 auto; padding-inline: 20px; }
.readbar {
  position: sticky; top: 0; z-index: 10; background: color-mix(in srgb, var(--surface) 92%, transparent);
  backdrop-filter: blur(8px); border-bottom: 1px solid var(--hair);
}
.readbar nav { display: flex; align-items: center; gap: 8px; padding-block: 10px; font-size: 14px; white-space: nowrap; overflow-x: auto; }
.readbar a { color: var(--ink-2); text-decoration: none; }
.readbar a:hover { color: var(--accent-ink); text-decoration: underline; }
.readbar nav > span { color: var(--axis); }
body.reading main { padding-block: 28px 8px; }
.kicker { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; font-size: 13px; color: var(--muted); margin: 0 0 10px; }
.state { font-size: 12px; font-weight: 600; padding: 2px 9px; border-radius: 999px; }
.state.s-final { background: color-mix(in srgb, var(--good) 16%, var(--surface)); color: var(--good-ink); }
.state.s-draft, .state.s-writing { background: color-mix(in srgb, var(--warn) 22%, var(--surface)); color: var(--warn-ink); }
.state.s-planned { box-shadow: inset 0 0 0 1px var(--axis); color: var(--muted); }
.banner { margin: 0 0 18px; padding: 10px 14px; border-radius: 10px; font-size: 14.5px; line-height: 1.6; }
.banner.draft {
  background: color-mix(in srgb, var(--warn) 14%, var(--surface)); color: var(--ink);
  border: 1px solid color-mix(in srgb, var(--warn) 50%, var(--surface));
}
.filenote { font-size: 13.5px; line-height: 1.65; color: var(--ink-2); background: var(--surface-2); border-radius: 10px; padding: 10px 14px; margin: 0 0 22px; }
.reader { max-width: none; margin: 0; }
.reader h1 { font: 700 clamp(26px, 4.4vw, 34px)/1.3 var(--serif); margin: 0 0 14px; text-wrap: balance; letter-spacing: -.01em; }
.reader h2 { font: 700 22px/1.4 var(--serif); margin: 44px 0 12px; padding-top: 20px; border-top: 1px solid var(--hair); }
.reader h3 { font: 600 17.5px/1.45 var(--sans); margin: 28px 0 8px; }
.reader h4 { font: 600 16px/1.45 var(--sans); margin: 22px 0 6px; }
.reader p, .reader li { font-size: 16.5px; line-height: 1.85; color: var(--ink); }
.reader li + li { margin-top: 4px; }
.reader th, .reader td { font-size: 14.5px; line-height: 1.6; }
.reader blockquote { border-left: 3px solid var(--accent); background: transparent; padding: 2px 16px; border-radius: 0; }
.reader blockquote p { font-size: 17px; }
.reader details { border: 1px solid var(--hair); border-radius: 10px; padding: 2px 16px; margin: 18px 0; }
.reader details[open] { padding-bottom: 12px; }
.reader summary { cursor: pointer; padding: 10px 0; font-weight: 600; color: var(--accent-ink); }
.reader code { font-size: .88em; }
.notebox { background: var(--surface-2); border-radius: 12px; padding: 14px 16px; margin: 6px 0 28px; }
.notebox p { margin: 0 0 8px; font-size: 14.5px; line-height: 1.6; color: var(--ink-2); }
.notebox p b { color: var(--ink); }
.notebox ul { list-style: none; margin: 0 0 10px; padding: 0; display: grid; gap: 8px; }
.notebox li { font-size: 14px; line-height: 1.5; margin: 0; color: var(--ink); }
.notebox li + li { margin-top: 0; }
.notebox li code { display: block; margin-top: 3px; font-size: 12.5px; overflow-wrap: anywhere; background: var(--surface); }
.notebox .lk { font-family: var(--mono); color: var(--muted); margin-right: 6px; }
.notebox .more { display: flex; flex-wrap: wrap; gap: 6px 18px; margin: 0; }
details.figs { margin: 40px 0 0; border-top: 1px solid var(--hair); padding-top: 14px; }
details.figs > summary { cursor: pointer; font-weight: 600; color: var(--ink); padding: 6px 0; }
details.figs > summary:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }
details.figs figure { margin: 22px 0 0; }
details.figs img { display: block; max-width: 100%; height: auto; background: #fff; border: 1px solid var(--hair); border-radius: 8px; }
.prose img.concept { display: block; max-width: 100%; height: auto; margin: 1.2em auto; padding: 6px; background: #fff; border: 1px solid var(--hair); border-radius: 8px; }
details.figs figcaption { margin-top: 8px; font-size: 14px; line-height: 1.55; color: var(--ink-2); }
details.figs figcaption .lk { display: block; font-size: 12.5px; color: var(--muted); margin-bottom: 2px; }
.pager { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin: 48px 0 0; }
.pager a {
  display: flex; flex-direction: column; gap: 2px; padding: 12px 14px; border: 1px solid var(--hair);
  border-radius: 12px; text-decoration: none; color: var(--ink);
}
.pager a:hover { border-color: var(--accent); }
.pager a.next { grid-column: 2; text-align: right; }
.pager span { font-size: 12.5px; color: var(--muted); }
.pager b { font-weight: 600; font-size: 15px; }
.pager small { font-size: 12px; color: var(--warn-ink); }
.readfoot { color: var(--muted); font-size: 13px; padding-block: 28px 56px; margin-top: 40px; border-top: 1px solid var(--hair); }
.math.display { display: block; overflow-x: auto; overflow-y: hidden; margin: 14px 0; text-align: center; }

/* ---------------------------------------------------------------- 좁은 화면 · 손가락 */
@media (max-width: 640px) {
  .wrap { padding-inline: 16px; }
  .masthead { padding-block: 28px 16px; }
  section.block { padding-block: 28px 8px; }
  .block-head h2 { font-size: 21px; }
  .panel { padding: 12px; }
  .board { padding: 12px; }
  .board-row { grid-template-columns: minmax(0, 1fr) auto; }
  .board-row .tiles { grid-column: 1 / -1; grid-row: 2; }
  .startdoc { padding: 14px 16px; }
  aside.drawer { padding-inline: 16px; }
  .drawer h2 { font-size: 22px; }
  .drawer .study li { grid-template-columns: 1fr; gap: 2px; }
  .readwrap { padding-inline: 16px; }
  .reader p, .reader li { font-size: 16px; line-height: 1.8; }
  .pager { grid-template-columns: 1fr; }
  .pager a.next { grid-column: auto; }
  /* 세 열 이상인 표는 행마다 카드로 쌓는다 (칸 이름은 build_site.py 가 data-label 로 붙인다) */
  .prose table.stack { display: block; overflow: visible; }
  .prose table.stack thead { display: none; }
  .prose table.stack tbody, .prose table.stack tr, .prose table.stack td { display: block; width: 100%; }
  .prose table.stack tr { border: 1px solid var(--hair); border-radius: 10px; padding: 6px 12px; margin: 0 0 8px; }
  .prose table.stack td { border: 0; padding: 4px 0; }
  .prose table.stack td::before { content: attr(data-label); display: block; font-size: 12px; color: var(--muted); }
  .prose table.stack td:empty { display: none; }
}
@media (pointer: coarse) {
  .chip { width: 24px; height: 24px; font-size: 11.5px; }
}