/* 딴짓 · 사다리타기 — 크래프트지 위 검은 마커 사다리, 위에는 색 이름 스티커, 아래에는 마스킹테이프 결과 라벨 */
:root {
  --kraft: #d9b98a; --kraft-2: #cfab76; --ink: #2b2320; --paper: #fffaf0; --dim: #6b5641;
  --red: #e2463a; --tape: #f3e6c4;
  --head: 'Do Hyeon', 'Pretendard Variable', sans-serif;
  --hand: 'Gaegu', 'Pretendard Variable', sans-serif;
  --ui: 'Pretendard Variable', Pretendard, -apple-system, 'Apple SD Gothic Neo', system-ui, sans-serif;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; overflow-x: clip; }
body { margin: 0; min-height: 100svh; color: var(--ink); font: 500 16px/1.55 var(--ui); overflow-x: clip;
  background-color: var(--kraft);
  background-image: radial-gradient(rgba(90,60,25,.13) 1px, transparent 1.4px), radial-gradient(rgba(255,255,255,.18) 1px, transparent 1.6px);
  background-size: 7px 9px, 11px 13px; background-position: 0 0, 3px 5px; }
button, input, textarea { font: inherit; color: inherit; }
:focus-visible { outline: 3px solid var(--ink); outline-offset: 3px; }

.top { display: flex; justify-content: space-between; align-items: center; padding: 10px 16px; max-width: 980px; margin: 0 auto; }
.logo { font: 400 21px/1 var(--head); color: var(--paper); background: var(--ink); padding: 9px 12px 7px; border-radius: 6px; text-decoration: none; transform: rotate(-3deg); }
.chip { appearance: none; min-height: 44px; padding: 0 14px; border: 2px solid var(--ink); border-radius: 999px; background: transparent; font-weight: 800; font-size: 14px; cursor: pointer; }
.chip[aria-pressed="false"] { opacity: .5; text-decoration: line-through; }

.stage { max-width: 980px; margin: 0 auto; padding: 0 16px 28px; min-height: calc(100svh - 64px); }
.setup { max-width: 560px; margin: 4px auto 0; background: var(--paper); border-radius: 4px; padding: 18px 16px 18px; box-shadow: 0 1px 0 rgba(0,0,0,.12), 0 10px 26px rgba(70,45,15,.18); position: relative; }
.setup::before, .setup::after { content: ''; position: absolute; top: -12px; width: 92px; height: 26px; background: var(--tape); opacity: .9; box-shadow: 0 1px 2px rgba(0,0,0,.12); }
.setup::before { left: 18px; transform: rotate(-5deg); } .setup::after { right: 18px; transform: rotate(4deg); }
h1 { margin: 0; font: 400 clamp(38px, 11vw, 52px)/1 var(--head); letter-spacing: -.01em; }
.lede { margin: 6px 0 12px; color: var(--dim); font-size: 15px; word-break: keep-all; }
.fld { display: grid; gap: 4px; margin-top: 10px; font-weight: 800; font-size: 14px; }
.fld small { font-weight: 600; color: var(--dim); margin-left: 4px; }
.fld textarea { width: 100%; min-height: 56px; resize: vertical; border: 2px solid var(--ink); border-radius: 8px; background: #fff; padding: 8px 10px; font: 400 22px/1.3 var(--hand); }
.presets { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }
.presets button { appearance: none; min-height: 40px; padding: 0 12px; border: 1.5px dashed var(--ink); border-radius: 999px; background: transparent; font-weight: 700; font-size: 14px; cursor: pointer; }
.presets button:hover { background: rgba(0,0,0,.05); }
.err { margin: 8px 0 0; color: var(--red); font-weight: 700; font-size: 14px; min-height: 0; }
.err:empty { display: none; }
.go { appearance: none; display: block; width: 100%; margin-top: 14px; min-height: 58px; border: 0; border-radius: 10px; background: var(--ink); color: var(--paper); font: 400 26px/1 var(--head); cursor: pointer; box-shadow: 0 5px 0 #000; }
.go:active { transform: translateY(3px); box-shadow: 0 2px 0 #000; }

/* 사다리 판 */
.board-wrap[hidden] { display: none; }
.hint { margin: 2px 0 8px; text-align: center; font: 400 22px/1.2 var(--hand); }
.board { overflow-x: auto; overscroll-behavior-x: contain; padding: 4px 0 8px; }
.board svg { display: block; margin: 0 auto; touch-action: manipulation; }
.board .rail { stroke: var(--ink); stroke-width: 5; stroke-linecap: round; }
.board .rung { stroke: var(--ink); stroke-width: 5; stroke-linecap: round; opacity: 0; transition: opacity .25s; }
.board .rung.on, .board.open .rung { opacity: 1; }
.board .cover { fill: #c79f69; stroke: rgba(70,45,15,.25); stroke-width: 2; transition: opacity .6s; }
.board.open .cover { opacity: 0; pointer-events: none; }
.board .cover-txt { font: 400 26px var(--hand); fill: rgba(43,35,32,.55); pointer-events: none; transition: opacity .4s; }
.board.open .cover-txt, .board.running .cover-txt { opacity: 0; }
.board .trail { fill: none; stroke-width: 9; stroke-linecap: round; stroke-linejoin: round; opacity: .92; }
.board .tag { cursor: pointer; }
.board .tag circle { stroke: var(--ink); stroke-width: 3; }
.board .tag text { font: 700 15px var(--ui); fill: var(--ink); text-anchor: middle; dominant-baseline: central; pointer-events: none; }
.board .tag.done circle { stroke-dasharray: 4 3; }
.board .tag:focus-visible circle { stroke-width: 6; }
.board .res rect { fill: var(--tape); stroke: rgba(70,45,15,.3); stroke-width: 1.5; }
.board .res text { font: 700 22px var(--hand); fill: var(--ink); text-anchor: middle; dominant-baseline: central; }
.board .res.hit rect { fill: #fff; stroke-width: 3; }
.board .dot { stroke: var(--ink); stroke-width: 3; }

.acts { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin-top: 10px; }
.btn { appearance: none; min-height: 46px; padding: 0 16px; border: 2px solid var(--ink); border-radius: 10px; background: var(--paper); font-weight: 800; font-size: 15px; cursor: pointer; box-shadow: 0 3px 0 var(--ink); }
.btn.main { background: var(--ink); color: var(--paper); }
.btn.ghost { background: transparent; box-shadow: none; border-style: dashed; }
.btn:disabled { opacity: .45; cursor: default; }
.table { max-width: 560px; margin: 16px auto 0; padding: 0; list-style: none; display: grid; gap: 6px; }
.table li { display: grid; grid-template-columns: 18px minmax(0, 1fr) auto minmax(0, 1.2fr); gap: 10px; align-items: center; background: var(--paper); border-radius: 6px; padding: 8px 12px; font-weight: 700; animation: pop .35s ease-out; }
.table li i { width: 14px; height: 14px; border-radius: 50%; border: 2px solid var(--ink); }
.table li span { overflow-wrap: anywhere; } .table li b { font: 400 22px/1.1 var(--hand); overflow-wrap: anywhere; }
.table li em { font-style: normal; color: var(--dim); }
@keyframes pop { from { transform: scale(.94); opacity: 0; } }
.toast { position: fixed; left: 50%; bottom: calc(22px + env(safe-area-inset-bottom)); transform: translateX(-50%); z-index: 90; margin: 0; padding: 12px 16px; background: var(--ink); color: var(--paper); border-radius: 10px; font-weight: 700; width: max-content; max-width: calc(100vw - 32px); text-align: center; }
.toast[hidden] { display: none; }

/* 설명서 */
.guide { background: var(--paper); border-top: 3px dashed rgba(43,35,32,.4); }
.guide-in { max-width: 760px; margin: 0 auto; padding: 30px 20px 44px; content-visibility: auto; contain-intrinsic-size: auto 1600px; }
.guide h2 { font: 400 25px/1.3 var(--head); margin: 30px 0 10px; word-break: keep-all; }
.guide section:first-of-type h2 { margin-top: 6px; }
.guide p, .guide li, .guide dd, .guide td { word-break: keep-all; }
.steps { padding-left: 1.3em; } .steps li { margin: 6px 0; } .steps b { margin-right: 4px; }
.guide table { width: 100%; border-collapse: collapse; font-size: 15px; }
.guide th, .guide td { text-align: left; padding: 8px 6px; border-bottom: 1px dashed rgba(43,35,32,.3); vertical-align: top; }
.faq dl { margin: 0; } .faq dt { font-weight: 800; margin-top: 16px; } .faq dd { margin: 4px 0 0; color: #4a3d33; }
.more ul { list-style: none; padding: 0; display: grid; gap: 8px; }
.more a { display: block; padding: 10px 12px; border: 2px solid var(--ink); border-radius: 8px; color: var(--ink); text-decoration: none; }
.more a b { margin-right: 6px; }
.site-foot { margin-top: 30px; font-size: 14px; display: flex; gap: 8px; flex-wrap: wrap; }
.site-foot a { color: var(--dim); display: inline-block; padding: 10px 0; }
@media (prefers-reduced-motion: reduce) { .table li { animation: none; } }