:root {

  --mint: #5BB4C0;         
  --mint-dark: #3D93A0;    
  --mint-light: #DBEEF1;   
  --mint-lighter: #EAF6F8; 
  --ink: #2c3a3a;
  --muted: #566a6a;        
  --line: #D6EBEE;         
  --bg: #FBE58F;           
  --white: #ffffff;
  --warn: #e08a3c;
  --danger: #e05555;
  --radius: 12px;          

  --border: 2px solid var(--ink);
  --shadow: 4px 4px 0 var(--ink);     
  --shadow-btn: 3px 3px 0 var(--ink); 
  --shadow-sm: 2px 2px 0 var(--ink);  
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN",
    "Yu Gothic", "Noto Sans JP", Meiryo, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  font-size: 15px;
  -webkit-text-size-adjust: 100%;
}


.app-header,
.layout,
.faq-section,
.app-footer {
  max-width: 1200px;
  margin: 0 auto;
}


.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px;
}
.brand { display: flex; align-items: center; gap: 14px; min-width: 0; }
.brand > i {
  font-size: 24px;
  color: #fff;
  background: var(--mint);
  border: var(--border);
  border-radius: 8px;
  padding: 10px 12px;
  flex-shrink: 0;
}
.brand-text h1 {
  font-size: clamp(20px, 5vw, 26px);
  margin: 0;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--ink);
}
.brand-text p { font-size: 13px; margin: 2px 0 0; color: var(--muted); }
.header-actions { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }

.privacy-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--mint-dark);
  background: var(--mint-lighter);
  border: var(--border);
  padding: 6px 12px;
  border-radius: 999px;
  font-weight: 700;
  white-space: nowrap;
  flex-shrink: 0;
}
.privacy-badge > i { color: var(--mint-dark); }
.privacy-badge-text-short { display: none; }


.layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  padding: 0 16px 16px;
  align-items: start;
}


.stage {
  background: var(--white);
  border: var(--border);
  border-radius: var(--radius);
  box-shadow: none; 
  padding: 16px;
}

.stage-inner {
  position: relative;
  height: 68vh;
  min-height: 420px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border-radius: 8px;
  overflow: hidden;
  transition: outline 0.15s, background-color 0.15s;
  outline: 2px dashed transparent;
  outline-offset: -8px;
}
.stage-inner.dragging { outline-color: var(--mint-dark); background-color: var(--mint-light); }


.canvas-frame {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  max-width: 100%;
  max-height: 100%;
  overflow: hidden;
  border-radius: 2px;
}
.preview-canvas {
  max-width: 100%;
  max-height: 100%;

  box-shadow: 0 0 0 2px var(--ink);
  border-radius: 2px;
  touch-action: none;
  cursor: grab;
}
.preview-canvas:active { cursor: grabbing; }
.stage-hint {
  margin: 12px 4px 0;
  font-size: 12px;
  color: var(--muted);
  text-align: center;
}
.stage-hint > i { color: var(--mint-dark); }


.dropzone {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  text-align: center;
  pointer-events: auto;
  cursor: pointer;
  color: var(--muted);
  padding: 20px;
}
.dropzone.hidden { display: none; }
.dz-icon { font-size: 54px; color: var(--mint-dark); margin-bottom: 8px; }
.dz-title { font-size: 18px; font-weight: 800; color: var(--ink); margin: 0; }
.dz-sub { font-size: 13px; margin: 0; }
.dz-note {
  margin-top: 14px;
  font-size: 12px;
  color: var(--mint-dark);
  background: var(--mint-lighter);
  border: var(--border);
  padding: 6px 12px;
  border-radius: 8px;
}
.dz-note > i { color: var(--mint-dark); }


.panel { display: flex; flex-direction: column; gap: 14px; min-width: 0; }
.card {
  background: var(--white);
  border: var(--border);
  border-radius: var(--radius);
  box-shadow: none; 
  padding: 14px;
}
.card h2 {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 14px;
  margin: 0 0 14px;
  font-weight: 800;
  color: var(--ink);
}
.card h2 > i { color: var(--mint-dark); font-size: 15px; }
.step-no {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  background: var(--mint);
  color: #fff;
  border: var(--border);
  border-radius: 50%;
  font-size: 11px;
  font-weight: 700;
  flex-shrink: 0;
}

.field { margin-bottom: 14px; }
.field:last-child { margin-bottom: 0; }
.field > label {
  display: block;
  font-size: 12.5px;
  font-weight: 700;
  color: var(--muted);
  margin-bottom: 7px;
}
.field.row { display: flex; gap: 14px; align-items: flex-end; }
.field.row .grow { flex: 1; }
.field.two { display: flex; gap: 12px; align-items: center; justify-content: space-between; }
.val { color: var(--mint-dark); font-weight: 700; }
.hint { font-size: 12px; color: var(--muted); margin: 8px 0 0; line-height: 1.5; }

select, input[type="text"] {
  width: 100%;
  padding: 8px;
  border: var(--border);
  border-radius: 8px;
  font-family: inherit;
  font-size: 13px;
  color: var(--ink);
  background: #fff;
  outline: none;
}
select {
  padding-right: 28px;
  text-overflow: ellipsis;
  white-space: nowrap;
  overflow: hidden;
}
select:focus, input[type="text"]:focus { border-color: var(--mint-dark); }


input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 20px;
  background: transparent;
  accent-color: var(--mint);
  cursor: pointer;
}
input[type="range"]:focus { outline: none; }
input[type="range"]:disabled { cursor: not-allowed; opacity: 0.5; }


input[type="range"]::-webkit-slider-runnable-track {
  height: 6px;
  border-radius: 999px;
  background: var(--mint-light);
  border: 1px solid var(--ink);
}
input[type="range"]::-moz-range-track {
  height: 6px;
  border-radius: 999px;
  background: var(--mint-light);
  border: 1px solid var(--ink);
}
input[type="range"]::-moz-range-progress {
  height: 6px;
  border-radius: 999px;
  background: var(--mint);
}


input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  margin-top: -7px;
  border-radius: 50%;
  background: var(--mint);
  border: 2px solid var(--ink);
  cursor: pointer;
}
input[type="range"]::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border: 2px solid var(--ink);
  border-radius: 50%;
  background: var(--mint);
  cursor: pointer;
}
input[type="range"]:disabled::-webkit-slider-thumb { background: var(--muted); }
input[type="range"]:disabled::-moz-range-thumb { background: var(--muted); }
input[type="color"] {
  width: 44px;
  height: 40px;
  border: var(--border);
  border-radius: 8px;
  background: #fff;
  cursor: pointer;
  padding: 3px;
}


.seg {
  display: inline-flex;
  width: 100%;
  border: var(--border);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.seg button {
  flex: 1;
  border: none;
  background: #fff;
  padding: 8px 6px;
  font-family: inherit;
  font-size: 13px;
  font-weight: 700;
  color: var(--muted);
  cursor: pointer;
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}
.seg button + button { border-left: var(--border); }
.seg button.active { background: var(--mint); color: #fff; }


.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: var(--border);
  border-radius: 8px;
  padding: 10px 15px;
  font-family: inherit;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  white-space: nowrap;
  flex-shrink: 0;
  background: var(--mint);
  color: #fff;
  box-shadow: var(--shadow-btn);
  transition: transform 0.08s, box-shadow 0.08s, background 0.12s;
}
@media (hover: hover) {
  .btn:hover:not(:disabled) {
    transform: translate(-1px, -1px);
    box-shadow: 4px 4px 0 var(--ink);
  }
}
.btn:active:not(:disabled) {
  transform: translate(3px, 3px);
  box-shadow: none;
}
.w-full { width: 100%; }
.btn-primary { background: var(--mint); color: #fff; }
.btn-secondary { background: #fff; color: var(--mint-dark); }
.btn-danger { background: #fff; color: var(--danger); margin-top: 12px; }
.btn-ghost { background: #fff; color: var(--mint-dark); }
.card .btn + .btn { margin-top: 10px; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; box-shadow: var(--shadow-btn); transform: none; }

.paper-info, .export-size {
  font-size: 12px;
  color: var(--muted);
  margin: 4px 0 0;
  background: var(--mint-lighter);
  border: var(--border);
  padding: 8px 10px;
  border-radius: 8px;
}
.grid-info {
  display: inline-block;
  margin-top: 6px;
  font-size: 12px;
  color: var(--mint-dark);
  font-weight: 700;
}


.toggle { display: inline-flex; align-items: center; gap: 8px; font-size: 13px; font-weight: 700; cursor: pointer; }
.toggle input { accent-color: var(--mint); width: 17px; height: 17px; }


.effects { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; }
.effect-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
  border: var(--border);
  background: #fff;
  border-radius: 8px;
  padding: 10px 4px;
  cursor: pointer;
  font-family: inherit;
  font-size: 11px;
  font-weight: 700;
  color: var(--muted);
  box-shadow: var(--shadow-sm);
  transition: transform 0.08s, box-shadow 0.08s, background 0.12s;
}
.effect-btn i { font-size: 16px; color: var(--mint-dark); }
@media (hover: hover) {
  .effect-btn:hover { transform: translate(-1px, -1px); box-shadow: 3px 3px 0 var(--ink); }
}
.effect-btn:active { transform: translate(2px, 2px); box-shadow: none; }
.effect-btn.active {
  background: var(--mint);
  color: #fff;
}
.effect-btn.active i { color: #fff; }


.text-editor { margin-top: 14px; padding-top: 14px; border-top: 1px dashed var(--line); }
.text-editor.hidden { display: none; }


.faq-section {
  padding: 0 16px 4px;
}
.faq-card { padding: 16px; }
.faq-heading {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 20px;
  font-weight: 700;
  margin: 0 0 12px;
  color: var(--ink);
}
.faq-heading > i { color: var(--mint-dark); }
.faq-item {
  border: var(--border);
  border-radius: 8px;
  background: #fff;
  margin-bottom: 8px;
  overflow: hidden;
}
.faq-item:last-child { margin-bottom: 0; }
.faq-item > summary {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 13px 14px;
  min-height: 48px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  color: var(--ink);
}
.faq-item > summary::-webkit-details-marker { display: none; }
.faq-item > summary::marker { content: ""; }
.faq-item[open] > summary { border-bottom: 1px dashed var(--line); }
.faq-q {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  background: var(--mint);
  color: #fff;
  border: var(--border);
  border-radius: 50%;
  font-size: 12px;
  font-weight: 700;
}
.faq-q-text { flex: 1; min-width: 0; }
.faq-chevron {
  flex-shrink: 0;
  color: var(--muted);
  font-size: 12px;
  transition: transform 0.2s;
  margin-left: auto;
}
.faq-item[open] > summary .faq-chevron { transform: rotate(180deg); color: var(--mint-dark); }
.faq-a { padding: 12px 14px 15px; }
.faq-a p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--ink);
}
.faq-a a { color: var(--mint-dark); font-weight: 700; }


mark.hl {
  background: linear-gradient(transparent 55%, rgba(255, 226, 92, 0.85) 55%);
  font-weight: 600;
  color: inherit;
  padding: 0 1px;
}


.app-footer {
  text-align: center;
  padding: 24px 16px 40px;
  color: #4d5c5c;
  font-size: 12px;
}
.app-footer a { color: var(--mint-dark); font-weight: 700; text-decoration: none; }
.app-footer a:hover { text-decoration: underline; }
.app-footer > p { margin: 6px 0 0; }
.app-footer > p:first-child { margin-top: 0; font-size: 13px; }
.foot-note { font-size: 11px; }
.foot-links { font-size: 12px; margin-top: 10px; }
.app-footer .foot-note > i,
.app-footer .foot-links > a > i { color: var(--mint-dark); }

.site-icon {
  width: 18px;
  height: 18px;
  border-radius: 4px;
  vertical-align: -4px;
  margin-right: 2px;
}


.modal {
  position: fixed;
  inset: 0;
  background: rgba(20, 40, 36, 0.45);
  display: flex;
  align-items: flex-end;
  justify-content: center;
  z-index: 100;
}
.modal.hidden { display: none; }
.modal-box {
  background: #fff;
  border: var(--border);
  box-shadow: none; 
  border-radius: 12px 12px 0 0;
  padding: 16px;
  max-width: 460px;
  max-height: 86vh;
  width: 100%;
  position: relative;
  line-height: 1.7;
  overflow-y: auto;
}
.modal-box h3 { margin: 0 0 16px; font-size: 18px; display: flex; align-items: center; gap: 9px; font-weight: 800; }
.modal-box h3 i { color: var(--mint-dark); }

.modal-close {
  position: absolute;
  top: 12px;
  right: 12px;
  border: var(--border);
  background: #fff;
  color: var(--ink);
  width: 34px;
  height: 34px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 15px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.08s, box-shadow 0.08s;
}
@media (hover: hover) {
  .modal-close:hover { transform: translate(-1px, -1px); box-shadow: 3px 3px 0 var(--ink); }
}
.modal-close:active { transform: translate(2px, 2px); box-shadow: none; }
.steps { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 16px; }
.steps li { display: flex; gap: 14px; align-items: flex-start; }
.s-num {
  flex-shrink: 0;
  width: 30px;
  height: 30px;
  background: var(--mint);
  color: #fff;
  border: var(--border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
}
.steps b { font-size: 14.5px; }
.steps p { margin: 3px 0 0; font-size: 13px; color: var(--muted); line-height: 1.5; }
.modal-note {
  margin: 18px 0 0;
  font-size: 12px;
  color: var(--mint-dark);
  background: var(--mint-lighter);
  border: var(--border);
  padding: 10px 12px;
  border-radius: 8px;
}
.modal-note > i { color: var(--mint-dark); }


.modal-box-disclaimer {
  max-width: 560px;
  max-height: min(86vh, 86dvh);
  display: flex;
  flex-direction: column;
}
.disclaimer-body {
  overflow-y: auto;
  min-height: 0;
  border: var(--border);
  border-radius: 8px;
  padding: 4px 16px;
  background: var(--mint-lighter);
}
.disclaimer-list {
  margin: 10px 0;
  padding-left: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.disclaimer-list li {
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink);
}
.disclaimer-list li::marker { color: var(--mint-dark); font-weight: 700; }
.disclaimer-actions {
  flex-shrink: 0;
  margin-top: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.disclaimer-actions.hidden { display: none; }
.disclaimer-agree { font-size: 13.5px; }
.disclaimer-buttons {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
}
.disclaimer-buttons .btn { flex: 0 1 auto; }


.toast {
  position: fixed;
  bottom: 26px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--ink);
  color: #fff;
  border: var(--border);
  padding: 12px 22px;
  border-radius: 8px;
  font-size: 13.5px;
  font-weight: 700;
  box-shadow: var(--shadow-btn);
  z-index: 200;
}
.toast.hidden { display: none; }
.toast.error { background: var(--danger); }


.print-root { display: none; }
@media print {

  html, body { height: auto; margin: 0; padding: 0; background: #fff; }
  body > *:not(.print-root) { display: none !important; }
  .print-root {
    display: block;
    margin: 0;
    padding: 0;
  }
  .print-root img { display: block; }
}


@media (min-width: 900px) {

  .layout {
    grid-template-columns: minmax(0, 1fr) 360px;
  }
  .stage { position: sticky; top: 14px; }
}

@media (max-width: 899px) {
  .stage-inner { height: 54vh; }
}

@media (max-width: 600px) {
  .app-header { flex-wrap: wrap; row-gap: 8px; gap: 10px; padding: 14px 16px; }
  .brand { flex: 1 1 auto; }
  .brand > i { font-size: 20px; padding: 8px 10px; }
  .brand-text p { display: none; }
  .header-actions { gap: 8px; }
  .privacy-badge { font-size: 11px; padding: 6px 10px; }
  .privacy-badge-text-full { display: none; }
  .privacy-badge-text-short { display: inline; }
  .modal-box { border-radius: 12px 12px 0 0; }
}


@media (min-width: 560px) {
  .modal { align-items: center; }
  .modal-box { border-radius: 12px; }
}


.header-mascot{display:flex;align-items:center;gap:8px;min-width:0;text-align:left;}
.hm-icon{width:52px;height:52px;flex-shrink:0;display:block;}
.hm-bubble{position:relative;min-width:0;background:#fff;border:none;border-radius:10px;padding:6px 10px;box-shadow:0 1px 4px rgba(44,58,58,.18);}
.hm-bubble::after{content:"";position:absolute;top:50%;left:-6px;transform:translateY(-50%);border-style:solid;border-width:5px 7px 5px 0;border-color:transparent #fff transparent transparent;}
.hm-bubble p{margin:0;font-size:11px;font-weight:700;color:var(--ink);line-height:1.5;}
.hm-link{display:inline-block;margin-top:2px;font-size:10.5px;font-weight:700;color:var(--mint-dark);text-decoration:underline;text-underline-offset:2px;background:none;border:none;padding:0;cursor:pointer;font-family:inherit;}
.hm-link:hover{color:var(--ink);}
@media (max-width:560px){
  .hm-icon{width:40px;height:40px;}
  .hm-bubble{padding:5px 8px;}
  .hm-bubble p{font-size:10px;}
  .hm-link{font-size:9.5px;}
}
.pm-overlay{position:fixed;inset:0;background:rgba(20,40,36,.45);display:flex;align-items:flex-end;justify-content:center;padding:0;z-index:100;}
.pm-overlay[hidden]{display:none;}
.pm-card{background:var(--white);border:var(--border);box-shadow:none;border-radius:12px 12px 0 0;width:100%;max-width:560px;max-height:88vh;display:flex;flex-direction:column;overflow:hidden;text-align:left;}
.pm-head{display:flex;align-items:center;gap:12px;padding:18px 22px 14px;border-bottom:var(--border);}
.pm-icon{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:8px;background:var(--mint-lighter);border:var(--border);color:var(--mint-dark);font-size:15px;flex:0 0 auto;}
.pm-title{margin:0;font-size:17px;font-weight:800;color:var(--ink);}
.pm-body{flex:1 1 auto;overflow-y:auto;padding:18px 22px;line-height:1.7;}
.pm-note{border:var(--border);border-radius:8px;background:var(--mint-lighter);padding:12px 14px;}
.pm-note ul{margin:0;padding-left:1.3em;display:flex;flex-direction:column;gap:10px;}
.pm-note li{font-size:13px;line-height:1.75;color:var(--ink);}
.pm-footer{padding:16px 22px 20px;border-top:var(--border);display:flex;justify-content:flex-end;}
.pm-close{font-family:inherit;font-size:14px;font-weight:700;color:#fff;background:var(--mint);border:var(--border);border-radius:8px;padding:10px 18px;cursor:pointer;box-shadow:var(--shadow-btn);transition:transform .08s,box-shadow .08s;}
.pm-close:active{transform:translate(3px,3px);box-shadow:none;}
@media (min-width:560px){
  .pm-overlay{align-items:center;padding:24px;}
  .pm-card{border-radius:12px;}
}


.brand-mark{
  display:flex;align-items:center;justify-content:center;width:48px;height:48px;flex:0 0 auto;
  color:var(--mint-dark);font-size:22px;
}
.brand-mark img{display:block;width:48px;height:48px;object-fit:contain;}
.puzzle-panel-toggle{display:flex;align-items:center;gap:8px;width:100%;border:0;background:none;color:var(--ink);font:inherit;font-weight:700;text-align:left;padding:4px 0;min-height:36px;cursor:pointer}
.puzzle-panel-toggle .step-no{display:none}
.puzzle-panel-toggle i{color:var(--mint-dark)}
.puzzle-toggle-arrow{margin-left:auto;font-size:12px;transform:rotate(180deg)}
.puzzle-collapsed .puzzle-toggle-arrow{transform:none}
.puzzle-panel-content{padding-top:12px}
.puzzle-collapsed .puzzle-panel-content{display:none}
.puzzle-menu-ready .layout>.panel>.card h2{margin:0}
.puzzle-dock,.puzzle-sheet{display:none}
.faq-section{max-width:none;border-top:var(--border);padding:48px 20px 60px;margin-top:32px}
.faq-card{max-width:800px;margin:0 auto;padding:0;background:transparent;border:0;box-shadow:none}
.faq-card .faq-heading{font-size:20px;font-weight:800;margin:0 0 24px;gap:10px}
.faq-item>summary{font-weight:700;line-height:1.5}
.faq-item>summary:hover{background:var(--mint-lighter)}
.faq-q{width:auto;height:auto;border:0;background:none;color:var(--mint-dark);font-size:15px}
.faq-chevron{width:8px;height:8px;border-right:2px solid var(--muted);border-bottom:2px solid var(--muted);transform:rotate(-45deg)}
.faq-chevron:before{content:none}
.faq-item[open]>summary .faq-chevron{transform:rotate(45deg)}
.faq-a{padding:12px 16px 16px 40px}
.faq-a p{line-height:1.85;color:var(--muted)}
@media(min-width:1001px){
 .puzzle-menu-ready .layout{grid-template-columns:340px minmax(0,1fr);max-width:1280px}
 .puzzle-menu-ready .layout>.panel{grid-column:1;grid-row:1;gap:10px}
 .puzzle-menu-ready .stage{grid-column:2;grid-row:1;top:64px}
}
@media(max-width:1000px){
 .puzzle-menu-ready .layout{display:block}
 .puzzle-menu-ready .layout>.panel{display:none}
 body.puzzle-menu-ready{padding-bottom:calc(86px + env(safe-area-inset-bottom,0px))}
 .puzzle-menu-ready .stage{position:relative;top:auto}
 .puzzle-menu-ready .stage-inner{height:54vh;min-height:260px}
 .puzzle-dock{display:flex;position:fixed;inset:auto 0 0;z-index:60;background:var(--white);border-top:var(--border);padding:8px 10px calc(8px + env(safe-area-inset-bottom,0px));gap:4px;overflow-x:auto}
 .puzzle-dock button{flex:1 0 52px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;min-height:52px;padding:6px 4px;background:none;border:0;border-radius:8px;color:var(--ink);font:inherit;font-size:11px;white-space:nowrap;cursor:pointer}
 .puzzle-dock button>i{font-size:21px;color:var(--mint-dark)}
 .puzzle-dock button[aria-expanded=true]{background:var(--mint-light)}
 .puzzle-sheet:not([hidden]){display:block;position:fixed;inset:0 0 78px;z-index:70}
 .puzzle-backdrop{position:absolute;inset:0;background:transparent}
 .puzzle-sheet-box{position:absolute;inset:auto 0 0;background:var(--white);border:var(--border);border-radius:18px 18px 0 0;max-height:65dvh;display:flex;flex-direction:column;box-shadow:0 -5px 20px #0002}
 .puzzle-sheet-head{display:flex;align-items:center;justify-content:space-between;padding:10px 16px;border-bottom:1px solid var(--line);font-weight:700}
 .puzzle-sheet-head button{width:44px;height:44px;background:var(--white);border:1px solid var(--line);border-radius:50%;font-size:18px;color:var(--ink)}
 .puzzle-sheet-body{padding:14px;overflow:auto;overscroll-behavior:contain}
 .puzzle-sheet-body .card{padding:0;border:0;margin:0;box-shadow:none}
 .puzzle-sheet-body .card>h2{display:none}
 .puzzle-sheet-body .puzzle-panel-content{display:block;padding:0}
}
@media print{.puzzle-dock,.puzzle-sheet{display:none!important}}
@media (max-width:700px){
  .app-header{flex-wrap:wrap;row-gap:8px;}
  .header-actions{width:100%;justify-content:space-between;}
}