/* 全屏画布，没有滚动条 / full-screen canvas, no scrollbars */
html, body {
  margin: 0;
  padding: 0;
  overflow: hidden;
  background: #000000;
  color: #ffe9f2;
  font-family: "Avenir Next", "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
}

canvas {
  display: block;
}

/* 开始界面 / start screen */
#intro {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #000000;
  z-index: 10;
  padding: 16px;
  overflow-y: auto;
}

.card {
  max-width: 640px;
  padding: 28px 32px;
  background: rgba(20, 8, 16, 0.92);
  border: 2px solid #ff4f7a;
  border-radius: 12px;
  text-align: center;
}

.card h1 {
  font-size: clamp(2.2rem, 8vw, 4rem);
  margin: 0;
  letter-spacing: 0.06em;
  font-weight: 600;
}

.sub {
  margin: 6px 0 18px;
  opacity: 0.8;
}

.card ul {
  list-style: none;
  padding: 0;
  margin: 0 0 14px;
  line-height: 1.8;
  text-align: left;
}

.tip {
  font-size: 0.9em;
  opacity: 0.75;
  margin: 0 0 20px;
}

kbd {
  border: 1px solid currentColor;
  border-radius: 4px;
  padding: 0 6px;
  font-size: 0.85em;
}

#start {
  font-family: inherit;
  font-size: 1.15rem;
  padding: 12px 32px;
  border: none;
  border-radius: 999px;
  background: #ff4f7a;
  color: #14040a;
  cursor: pointer;
}

#start:hover {
  filter: brightness(1.15);
}

/* 状态提示 / status line */
#status {
  position: fixed;
  left: 16px;
  bottom: 12px;
  font-size: 0.85rem;
  padding: 3px 8px;
  border-radius: 4px;
  background: rgba(0, 0, 0, 0.55);
  color: #fff;
  pointer-events: none;
  max-width: calc(100vw - 48px);
}

/* 保持模板页面结构，只补充互动作品所需的画布与无障碍控制。 */
* { box-sizing: border-box; }
.stage { position: fixed; inset: 0; overflow: hidden; isolation: isolate; background: #eae1ca; }
.stage > img, .stage > canvas { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.stage > img { z-index: -1; }
#art { touch-action: none; outline: none; }
#art:focus-visible { outline: 2px solid #ff4f7a; outline-offset: -3px; }
#foam { pointer-events: none; }
#intro[hidden], #sceneInfo[hidden], .loader.hidden { display: none; }
.card { width: 100%; }
.card li { margin-bottom: 3px; }
.settings { margin: 0 0 18px; text-align: left; font-size: .85rem; }
.settings summary { cursor: pointer; padding: 8px 0; opacity: .8; }
.settings-controls { display: flex; gap: 8px; flex-wrap: wrap; margin: 8px 0; }
.settings-controls button { font: inherit; padding: 8px 10px; color: #ffe9f2; background: transparent; border: 1px solid #754556; border-radius: 5px; cursor: pointer; }
.settings-controls button:disabled { opacity: .5; cursor: wait; }
.settings-controls button:hover { background: #442132; }
.privacy, .sources { font-size: .75rem; line-height: 1.7; opacity: .75; }
.sources a { color: inherit; text-underline-offset: 3px; }
#sceneInfo { position: fixed; top: 14px; right: 16px; display: flex; align-items: center; gap: 7px; padding: 7px 9px; color: #fff7ea; background: rgba(0,0,0,.55); border-radius: 4px; font-size: .8rem; }
#menuToggle { font: inherit; margin-left: 9px; color: inherit; background: transparent; border: 0; border-left: 1px solid #ffffff55; padding: 0 0 0 10px; cursor: pointer; }
.meter { width: 35px; height: 2px; background: #ffffff44; }
.meter i { display: block; width: 20%; height: 100%; background: #ff4f7a; }
#status { margin: 0; line-height: 1.6; }
.loader { position: absolute; inset: 0; display: grid; place-items: center; color: #182e3c; background: #eae1ca; }
button:focus-visible, summary:focus-visible, a:focus-visible { outline: 2px solid #ff4f7a; outline-offset: 4px; }
@media (max-height: 620px) { #intro { align-items: flex-start; } }
@media (max-width: 480px) { .card { padding: 22px 20px; } .card ul { font-size: .88rem; line-height: 1.8; } .sub { font-size: .82rem; } .tip { font-size: .78rem; } #status { font-size: .72rem; max-width: calc(100vw - 32px); } }

/* Bauhaus visual language; keep the Kusama template's screen and card structure. */
html, body, #intro { background: #eee9dc; color: #202322; }
.card { background: #eee9dc; border: 1px solid #202322; border-radius: 0; box-shadow: 9px 9px 0 #202322; }
.composition-label { margin: 0 0 20px; font: 11px/1.4 "Helvetica Neue", Arial, sans-serif; letter-spacing: .2em; text-align: left; }
.card h1 { font-weight: 800; letter-spacing: -.035em; }
.card ul { border-top: 1px solid #202322; padding-top: 18px; }
.card li { margin-bottom: 6px; }
#start { background: #cf442c; color: #eee9dc; border-radius: 0; font-weight: 600; }
kbd { border-radius: 0; }
.settings-controls button { color: #202322; border-color: #202322; border-radius: 0; }
.settings-controls button:hover { background: #d6ad37; }
#sceneInfo, #status { background: #eee9dce8; color: #202322; border: 1px solid #202322; border-radius: 0; }
#menuToggle { border-color: #20232266; }
.meter { background: #20232233; }.meter i { background: #cf442c; }
button:focus-visible, summary:focus-visible, a:focus-visible { outline-color: #cf442c; }
#art:focus-visible { outline-color: #cf442c; }
#painting { object-fit: contain; background: #eee9dc; }
#sceneInfo { flex-wrap: wrap; max-width: calc(100vw - 32px); }
.mode-controls { display: flex; gap: 2px; margin-right: 7px; }
.mode-controls button { font: inherit; border: 0; padding: 5px 7px; background: transparent; color: #202322; cursor: pointer; }
.mode-controls button[aria-pressed="true"] { background: #202322; color: #eee9dc; }
#status { max-width: min(780px,calc(100vw - 32px)); }
@media(max-width:540px){#sceneInfo{left:16px;right:16px;justify-content:space-between}.mode-controls{margin:0}.mode-controls button{padding:5px;font-size:11px}#modeLabel{display:none}#sceneInfo>.meter{display:none}}