* { margin: 0; padding: 0; box-sizing: border-box; }
:root {
  --ink: #e8e2d4;        /* 主文字：暖白 */
  --ink-dim: #b3aca0;    /* 次要文字（提亮） */
  --accent: #ff9a3c;     /* 强调：橙 */
  --accent-hi: #ffc46b;
  --shadow: 0 2px 0 rgba(0,0,0,.85);
  /* 战场边长：跟着窗口走（宽高里小的那边，上下留边），最大到原生 624 的 2 倍；触屏布局在文件末尾另算 */
  --field: min(1248px, 100vw, calc(100dvh - 24px));
}
body {
  background: #0b0b0e;
  padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left); /* 独立运行时避让刘海/手势条 */
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--ink);
}
#wrap { text-align: center; }
#stage-area { position: relative; display: inline-block; }
canvas {
  background: #636363;
  image-rendering: pixelated;
  border: 2px solid #26262c;
  border-radius: 4px;
  box-shadow: 0 24px 70px rgba(0,0,0,.75);
  display: block; margin: 0 auto; /* 编辑器工具栏比缩小的战场宽时，战场仍居中 */
  width: var(--field); height: var(--field);
  touch-action: none;           /* 防触屏滚动手势 */
}

/* ===== 触屏控制 ===== */
#touch-controls {
  display: none;
  position: fixed; inset: 0;
  pointer-events: none; z-index: 50;
  user-select: none; -webkit-user-select: none; -webkit-touch-callout: none;
}
#touch-controls.show { display: block; }
#touch-controls.paused-only #joy-zone,
#touch-controls.paused-only #fire-btn { display: none; } /* 暂停时收起，避免盖住菜单 */

/* 万向浮动摇杆：左下大区域为触控区，按下即出现摇杆 */
#joy-zone {
  position: absolute; left: 0; bottom: 0;
  width: 55%; height: 62%;
  pointer-events: auto; touch-action: none;
}
#joy-base {
  position: absolute; width: 118px; height: 118px; border-radius: 50%;
  transform: translate(-50%, -50%);
  background: rgba(12,12,20,.55);
  border: 2px solid rgba(255,255,255,.6);
  box-shadow: inset 0 0 0 8px rgba(255,255,255,.07), 0 2px 14px rgba(0,0,0,.45);
  pointer-events: none;
  transition: left .18s ease, top .18s ease; /* 松手/初始化平滑归位 */
}
#joy-knob {
  position: absolute; left: 50%; top: 50%;
  width: 54px; height: 54px; border-radius: 50%;
  transform: translate(-50%, -50%);
  background: rgba(250,246,238,.92);
  border: 2px solid rgba(30,30,40,.55);
  box-shadow: 0 3px 12px rgba(0,0,0,.5);
}
#fire-btn { /* 中心点由 JS 按横竖屏算好写进 --fire-x / --ctrl-y（与摇杆同一水平线） */
  position: absolute;
  left: calc(var(--fire-x, calc(100vw - 62px)) - 46px); top: calc(var(--ctrl-y, calc(100vh - 68px)) - 46px);
  width: 92px; height: 92px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: rgba(232,226,212,.92); background: rgba(16,16,22,.45);
  border: 1px solid rgba(255,255,255,.25);
  pointer-events: auto; cursor: pointer; touch-action: none;
}
#fire-btn.press, #fire-btn:active { transform: scale(.88); } /* 只缩放，不变色 */
#pause-btn {
  position: absolute; top: max(10px, env(safe-area-inset-top)); right: max(12px, env(safe-area-inset-right));
  width: 42px; height: 42px; border-radius: 8px;
  font-size: 17px; color: rgba(232,226,212,.9);
  background: rgba(16,16,22,.45); border: 1px solid rgba(255,255,255,.25);
  pointer-events: auto; cursor: pointer; touch-action: none;
}


#hint { margin-top: 10px; font-size: 12px; color: #66605a; letter-spacing: 1px; }

/* ===== 覆盖层：无容器，直接悬浮在画面上 ===== */
#overlay { position: absolute; inset: 0; pointer-events: none; border-radius: 4px; }
#overlay.dim { background: rgba(6,6,10,.72); }
#overlay.demo { background: rgba(6,6,10,.42); } /* 演示模式：菜单背后的 AI 对战可见 */
#overlay.dim::after, #overlay.demo::after { /* 轻微暗角，聚焦中心 */
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(ellipse at 50% 45%, transparent 55%, rgba(0,0,0,.5));
}
.screen {
  display: none;
  position: absolute; inset: 0;
  flex-direction: column; align-items: center; justify-content: center;
  pointer-events: auto;
}
.screen.show { display: flex; animation: fade .22s ease-out; }
@keyframes fade { from { opacity: 0; } }

/* 像素 LOGO */
.logo { font-family: "Press Start 2P", monospace; font-size: 40px; color: var(--accent); text-shadow: 3px 3px 0 #40160a, 0 0 34px rgba(255,120,20,.35); letter-spacing: 2px; }
.logo span { color: var(--accent-hi); margin-left: .4em; } /* TANK 与 ARENA 之间留空，免得读成 TANKARENA */
.logo-sub { font-size: 26px; letter-spacing: 18px; text-indent: 18px; color: var(--ink); margin: 12px 0 26px; text-shadow: var(--shadow); }

/* 菜单项：纯文字 + 侧标 */
.menu { display: flex; flex-direction: column; gap: 3px; align-items: center; }
.item {
  font-family: inherit;
  font-size: 24px; letter-spacing: 6px; text-indent: 6px;
  color: #cfc9bd;
  background: none; border: 0; cursor: pointer;
  padding: 6px 40px;
  text-shadow: 0 2px 0 rgba(0,0,0,.9), 0 0 14px rgba(0,0,0,.5);
  transition: color .12s, transform .12s;
  position: relative;
}
.item::before, .item::after {
  content: ''; position: absolute; top: 50%;
  width: 0; height: 0; margin-top: -7px;
  border: 7px solid transparent; opacity: 0;
  transition: opacity .12s, margin .12s;
}
.item::before { border-left-color: var(--accent); left: 8px; margin-left: -6px; }
.item::after  { border-right-color: var(--accent); right: 8px; margin-right: -6px; }
.item:hover, .item:focus-visible {
  color: #ffd98f; transform: scale(1.06); outline: none;
  text-shadow: 0 2px 0 rgba(0,0,0,.9), 0 0 18px rgba(255,160,60,.45);
}
.item:hover::before, .item:hover::after { opacity: 1; }
.item:hover::before { margin-left: 0; }
.item:hover::after { margin-right: 0; }
.item.back { font-size: 18px; margin-top: 22px; color: #a8a196; }

/* 标题 */
.head {
  font-size: 34px; letter-spacing: 14px; text-indent: 14px;
  color: var(--ink); text-shadow: var(--shadow); margin-bottom: 26px;
}
.head.danger { color: #ff5340; font-family: "Press Start 2P", monospace; font-size: 26px; letter-spacing: 4px; }
.head.win { color: var(--accent-hi); }

/* 设置行：‹ 选项 › */
.optrow { display: flex; gap: 40px; margin-top: 26px; align-items: center; }
.opt { display: inline-flex; align-items: center; gap: 10px; font-size: 18px; letter-spacing: 3px; }
.opt label { color: var(--ink-dim); }
.opt b { color: var(--accent-hi); min-width: 3.2em; font-weight: normal; }
.arrow {
  font-family: inherit; font-size: 22px; color: var(--ink-dim);
  background: none; border: 0; cursor: pointer; padding: 0 4px;
  text-shadow: var(--shadow); transition: color .1s;
}
.arrow:hover { color: var(--accent); }

.foot { margin-top: 30px; font-size: 14px; letter-spacing: 4px; color: #a8a196; text-shadow: var(--shadow); }
.foot b { color: var(--accent-hi); }

/* 选关格：纯数字（固定撑满 4 行高度，翻页不跳动） */
.stage-grid {
  display: grid; grid-template-columns: repeat(7, 52px); gap: 6px;
  grid-template-rows: repeat(4, 44px);
}
.stage-grid button {
  font-family: "Press Start 2P", monospace; font-size: 14px;
  padding: 13px 0; cursor: pointer;
  background: none; border: 0; color: var(--ink-dim);
  text-shadow: var(--shadow); transition: .1s;
}
.stage-grid button:hover { color: var(--accent-hi); transform: scale(1.2); }
#custom-grid button { color: #8fc08a; }
#custom-grid button:hover { color: #b9e8b3; }

/* 选关页 Tab 与分页 */
.tabs { display: flex; gap: 30px; margin-bottom: 20px; }
.tab {
  font-family: inherit; font-size: 17px; letter-spacing: 4px; text-indent: 4px;
  color: #a8a196; background: none; border: 0; cursor: pointer;
  padding: 4px 6px; text-shadow: var(--shadow); transition: .12s;
}
.tab.on { color: var(--accent-hi); }
.tab:not(.on):hover { color: var(--ink); }
.pager { display: flex; align-items: center; gap: 16px; margin-top: 16px; visibility: hidden; }
.pager .arrow { font-size: 24px; }
#pg-ind { font-size: 13px; letter-spacing: 3px; color: var(--ink-dim); font-family: "Press Start 2P", monospace; }

/* 关卡库列表 */
.level-list { display: flex; flex-direction: column; gap: 6px; max-height: 380px; overflow-y: auto; min-width: 380px; }
.level-row { display: flex; align-items: center; gap: 8px; padding: 6px 10px; }
.level-row .name { flex: 1; text-align: left; font-size: 17px; letter-spacing: 2px; color: var(--ink); }
.level-row button {
  font-family: inherit; font-size: 13px; letter-spacing: 2px;
  color: var(--ink-dim); background: none; border: 1px solid #3a3a42; border-radius: 4px;
  padding: 3px 10px; cursor: pointer; transition: .1s;
}
.level-row button:hover { color: var(--accent-hi); border-color: var(--accent); }
.level-row button.danger:hover { color: #ff6a55; border-color: #ff6a55; }
.level-empty { color: #6d675f; font-size: 14px; letter-spacing: 2px; padding: 20px 0; }

/* 统计行 / 致谢 */
.go-stats { font-size: 19px; letter-spacing: 2px; color: var(--ink-dim); line-height: 2; margin-bottom: 24px; text-shadow: var(--shadow); }
.go-stats b { color: var(--accent-hi); }
.credits { text-align: left; font-size: 15px; color: var(--ink-dim); line-height: 1.9; max-width: 430px; margin-bottom: 10px; }
.credits p { margin-bottom: 14px; }
.credits b { color: var(--ink); }
.credits a { color: #ffb066; text-decoration: none; border-bottom: 1px dotted #ffb06666; }

/* 矮屏（横屏手机）：菜单整体压缩防溢出 */
@media (max-height: 520px) {
  .logo { font-size: 24px; }
  .logo-sub { font-size: 15px; letter-spacing: 8px; text-indent: 8px; margin: 8px 0 14px; }
  .item { font-size: 17px; padding: 3px 26px; letter-spacing: 3px; }
  .menu { gap: 0; }
  .foot { margin-top: 12px; font-size: 12px; }
  .head { font-size: 20px; margin-bottom: 10px; }
}

/* 联机对战页：与主菜单同款悬浮文字，模式名下一行小字说明 */
#ol-picker, #ol-matching { display: flex; flex-direction: column; align-items: center; }
.ol-guest { font-size: 15px; letter-spacing: 2px; color: var(--ink-dim); text-shadow: var(--shadow); margin: -8px 0 20px; }
.ol-guest b { color: var(--accent-hi); font-weight: normal; }
.ol-modes { gap: 0; transition: opacity .2s; }
/* 联机服务器还在启动（免费版休眠后约需一分钟）：显示提示，模式暂不能点 */
.ol-wake { display: none; font-size: 14px; letter-spacing: 2px; color: var(--accent-hi); text-shadow: var(--shadow); margin: -10px 0 14px; }
#ol-picker.waking .ol-wake { display: block; }
#ol-picker.waking .ol-modes { opacity: .35; pointer-events: none; }
.ol-desc { font-size: 13px; letter-spacing: 1px; color: #a29c91; text-shadow: var(--shadow); margin: -2px 0 14px; }
#ol-matching { gap: 12px; }
.ol-matching-mode { font-size: 20px; letter-spacing: 4px; color: var(--ink); text-shadow: var(--shadow); }
.ol-matching-mode b { color: var(--accent-hi); font-weight: normal; }
.ol-matching-wait { font-size: 15px; letter-spacing: 2px; color: var(--ink-dim); text-shadow: var(--shadow); }
.ol-matching-time { font-size: 14px; letter-spacing: 2px; color: #8f897e; text-shadow: var(--shadow); }
.ol-matching-time b { font-family: "Press Start 2P", monospace; font-size: 12px; color: var(--accent-hi); font-weight: normal; }

/* 联机提示条：浮在战场上方，对局中菜单隐藏时也看得见 */
#ol-toast {
  position: absolute; left: 50%; top: 16%; transform: translateX(-50%);
  padding: 8px 18px; white-space: nowrap;
  font-size: 16px; letter-spacing: 2px; color: var(--accent-hi); text-shadow: var(--shadow);
  background: rgba(10,10,14,.78); border: 1px solid rgba(255,154,60,.35); border-radius: 6px;
  pointer-events: none; z-index: 40; opacity: 0; transition: opacity .2s;
}
#ol-toast.show { opacity: 1; }

/* 设置面板 */
.settings-list { display: flex; flex-direction: column; gap: 18px; align-items: flex-start; }
.set-row { display: flex; align-items: center; gap: 12px; font-size: 19px; letter-spacing: 3px; }
.set-row label { color: var(--ink); min-width: 5.5em; text-align: left; }
.set-row b { color: var(--accent-hi); min-width: 3em; font-weight: normal; text-align: center; }
.set-note { font-size: 13px; color: #a29c91; letter-spacing: 1px; text-shadow: var(--shadow); }
#set-lives {
  width: 4.5em; padding: 4px 8px; text-align: center;
  font-family: "Press Start 2P", monospace; font-size: 15px;
  color: var(--accent-hi); background: rgba(16,16,22,.8);
  border: 1px solid #3a3a42; border-radius: 4px; outline: none;
}
#set-lives:focus { border-color: var(--accent); }

/* 玩法说明 */
.help-cols { display: flex; gap: 44px; text-align: left; align-items: flex-start; }
.help-col { max-width: 220px; }
.help-col h3 { font-size: 17px; letter-spacing: 4px; color: var(--accent); margin: 0 0 10px; font-weight: normal; text-shadow: var(--shadow); }
.help-col h3:not(:first-child) { margin-top: 18px; }
.help-col dl { display: grid; grid-template-columns: auto 1fr; gap: 5px 12px; }
.help-col dt { color: var(--ink); font-size: 14px; letter-spacing: 1px; }
.help-col dd { color: var(--ink-dim); font-size: 14px; }
.help-col p { color: var(--ink-dim); font-size: 14px; line-height: 1.8; }

/* 编辑器工具栏：画布下方，允许换行（画笔行 + 操作行），杜绝按钮被挤压成竖排 */
#editor-bar {
  display: none; width: 624px; max-width: 100%;
  margin: 10px auto 0; box-sizing: border-box;
  flex-wrap: wrap; align-items: center; justify-content: center; gap: 8px 10px;
  pointer-events: auto; padding: 8px 10px;
  background: rgba(16,16,22,.9);
  border: 1px solid #2c2c34; border-radius: 6px;
}
#editor-bar.show { display: flex; }
/* 画笔组：标签云式换行——组可收缩，按钮不压缩不换字，放不下自动折行 */
.brushes { display: flex; gap: 8px; flex-wrap: wrap; justify-content: center; min-width: 0; max-width: 100%; }
.brush {
  display: inline-flex; align-items: center; gap: 7px;
  font-family: inherit; font-size: 15px; letter-spacing: 2px;
  color: var(--ink-dim); background: rgba(24,24,30,.9);
  border: 1px solid #3a3a42; border-radius: 4px;
  padding: 4px 11px 4px 6px; cursor: pointer; transition: .1s;
  white-space: nowrap; flex-shrink: 0;
}
.brush i { width: 20px; height: 20px; display: inline-block; border-radius: 3px; }
.brush.on { color: #16120a; background: var(--accent); border-color: var(--accent); }
.brush.on i { outline: 1px solid rgba(0,0,0,.4); }
.ed-actions { display: flex; gap: 14px; flex-wrap: wrap; justify-content: center; flex-shrink: 0; }
.ed-actions .item { font-size: 16px; padding: 2px 14px; letter-spacing: 3px; white-space: nowrap; flex-shrink: 0; }
.ed-actions .item::before, .ed-actions .item::after { display: none; }

/* 加载画面 */
#loading {
  position: absolute; inset: 0; z-index: 10;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 16px;
  background: #0b0b0e; border-radius: 4px;
  color: #6d675f; font-size: 14px; letter-spacing: 4px;
}
.loading-bar { width: 220px; height: 8px; border: 1px solid #3a3a42; overflow: hidden; }
.loading-bar i { display: block; height: 100%; width: 0; background: var(--accent); transition: width .15s; }

/* ===== 响应式（置于文件末尾，覆盖上方基础规则） ===== */
@media (max-width: 700px) {
  .logo { font-size: clamp(15px, 6.4vw, 26px); letter-spacing: 1px; }
  .logo-sub { font-size: 20px; letter-spacing: 12px; text-indent: 12px; margin-bottom: 22px; }
  .item { font-size: 20px; padding: 6px 30px; letter-spacing: 4px; }
  .head { font-size: clamp(18px, 6vw, 26px); letter-spacing: 8px; margin-bottom: 18px; }
  .menu { gap: 0; }
  .optrow { flex-wrap: wrap; gap: 14px 26px; margin-top: 18px; }
  .help-cols { flex-direction: column; gap: 14px; align-items: center; }
  .help-col { max-width: 300px; }
  .stage-grid { grid-template-columns: repeat(7, min(40px, 12vw)); }
  .stage-grid button { font-size: 11px; padding: 10px 0; }
  #stage-area canvas { border-left: 0; border-right: 0; border-radius: 0; }
  .credits { max-width: 300px; }
  .level-list { min-width: 280px; max-width: 92vw; }
  .item:active { color: var(--accent-hi); transform: scale(1.04); } /* 触屏按下反馈 */

  /* 地图编辑器（移动端）：画布全宽，工具条两行自适应不溢出 */
  #editor-bar {
    width: 100vw; max-width: 100vw; box-sizing: border-box;
    margin-left: calc(50% - 50vw); /* 抵消父级内边距，严格锁视口宽 */
    flex-wrap: wrap; justify-content: center;
    gap: 8px 6px; padding: 8px 8px 10px;
    border-radius: 0; border-left: 0; border-right: 0;
  }
  .brushes { justify-content: center; flex-wrap: wrap; gap: 6px; }
  .brush { font-size: 13px; padding: 4px 8px 4px 5px; gap: 5px; }
  .brush i { width: 16px; height: 16px; }
  .ed-actions { gap: 4px; }
  .ed-actions .item { font-size: 15px; padding: 2px 10px; letter-spacing: 2px; }
}

/* 主菜单切换器（玩家人数/游戏模式）：标签与 .item 菜单项同尺寸同样式，
   选项值保留设置页的高亮色（accent-hi）作为视觉焦点 */
.menu-toggles { display: flex; flex-direction: column; gap: 6px; margin: 0 0 18px; align-items: center; }
.menu-toggles .set-row { gap: 14px; }
.menu-toggles .set-row label {
  font-size: 24px; letter-spacing: 6px; text-indent: 6px; color: #cfc9bd;
  text-shadow: 0 2px 0 rgba(0,0,0,.9), 0 0 14px rgba(0,0,0,.5);
  min-width: 5em; text-align: left;
}
.menu-toggles .set-row b {
  color: var(--accent-hi); font-weight: normal;
  font-size: 24px; letter-spacing: 6px; text-indent: 6px; min-width: 4em; text-align: center;
  text-shadow: 0 2px 0 rgba(0,0,0,.9), 0 0 14px rgba(0,0,0,.5);
}
.menu-toggles .arrow { font-size: 26px; }

/* 主菜单分组节奏：切换器（配置区）与按钮（动作区）之间的分隔呼吸 */
.menu-toggles + .menu { margin-top: 2px; }

/* PvP 结算标题：胜=金色 / 负=红色 / 平=默认 */
.head.win-title { color: var(--accent-hi) !important; text-shadow: 0 0 24px rgba(255,200,80,.4), var(--shadow) !important; }

/* 矮屏（横屏手机）：主菜单切换器、联机页、设置页同步压缩（须在上方切换器基础规则之后才能覆盖） */
@media (max-height: 520px) {
  .logo-sub { margin-bottom: 8px; }
  .menu-toggles { gap: 0; margin-bottom: 6px; }
  .menu-toggles .set-row label, .menu-toggles .set-row b { font-size: 17px; letter-spacing: 3px; text-indent: 3px; }
  .menu-toggles .arrow { font-size: 20px; }
  .item.back { margin-top: 8px; }
  .ol-guest { margin: 0 0 8px; }
  .ol-desc { margin-bottom: 4px; }
  .settings-list { gap: 8px; }
  .set-row { font-size: 16px; }
}

/* ===== 电脑：战场大于原尺寸时 ===== */
/* 地图编辑器：画布下方要留工具栏的高度 */
body.editing { --field: min(1248px, 100vw, calc(100dvh - 150px)); }
/* 菜单层按 624 排版再整体等比放大（--ui-k 由 JS 按战场实际宽度算），菜单与战场同比变大 */
body.ui-scaled #overlay { inset: auto; left: 0; top: 0; width: 624px; height: 624px; transform: scale(var(--ui-k, 1)); transform-origin: 0 0; }

/* ===== 触屏布局：JS 按「触屏操作」设置 + 横竖屏给 body 挂 touch / portrait / landscape / editing ===== */
body.touch { padding: 0; min-height: 100dvh; touch-action: manipulation; } /* manipulation：菜单照常滑动，但禁双击放大 */
/* 触屏对局中整页钉住：不滚动、不回弹、不缩放（JS 同时拦截滑动手势兜底，见 ui.js bindPageLock） */
html.battle-lock, body.touch.battle { overflow: hidden; overscroll-behavior: none; }
body.touch.battle { touch-action: none; }
body.touch .kb-only, body:not(.touch) .touch-only { display: none; } /* 玩法说明：按设备显示键盘或触屏操作 */
body:not(.can-fs) .fs-only { display: none; } /* "强制横屏"只在支持网页全屏的触屏设备（安卓）出现，苹果手机上它做不了任何事 */
body:not(.ios) .ios-tip { display: none; }    /* "添加到主屏幕"提示只给苹果设备，且已从桌面图标打开时不再提示 */

/* 竖屏：战场贴顶部按钮栏下方，下方整块留给摇杆和开火键 */
body.touch.portrait {
  --top-h: calc(56px + env(safe-area-inset-top));
  --field: min(624px, 100vw, calc(100dvh - var(--top-h) - 220px));
  align-items: flex-start;
}
body.touch.portrait #wrap { padding-top: var(--top-h); }
body.touch.portrait canvas { border-left: 0; border-right: 0; border-radius: 0; }

/* 竖屏菜单：战场铺满全屏当背景（左右超出部分裁掉），没有方框边压在菜单文字上；开局后回到顶部方框 */
body.touch.portrait.menu { --field: 100dvh; overflow: hidden; justify-content: flex-start; }
/* 比屏幕宽的盒子浏览器不会自动居中（会贴左边），这里手动左移超出部分的一半 */
body.touch.portrait.menu #wrap { padding-top: 0; flex-shrink: 0; margin-left: calc((100vw - var(--field)) / 2); }

/* 横屏：战场居中占满高度，左右两侧栏各留 150px 放摇杆和开火键 */
body.touch.landscape {
  --field: min(624px, calc(100dvh - 16px - env(safe-area-inset-top) - env(safe-area-inset-bottom)), calc(100vw - 300px));
}
body.touch.landscape #joy-zone { width: 50%; height: calc(100% - 64px); }

/* 地图编辑器：不用摇杆，但画布下方要留工具栏的高度 */
body.touch.editing { --field: min(624px, 100vw, calc(100dvh - 150px)); }

/* 菜单铺满整屏（不再挤在战场方框里），统一深色底；内容比屏幕高时可上下滑动 */
body.touch #overlay { position: fixed; inset: 0; border-radius: 0; z-index: 30; }
body.touch #overlay.demo { background: rgba(6,6,10,.8); } /* 横屏菜单跨在战场与黑底上，压暗到战场只剩背景氛围，文字才看得清 */
/* 竖屏战场铺满全屏，没有明暗交界：主菜单字大可以少压一点；设置/说明等子页面字小，压暗些才看得清 */
body.touch.portrait.menu #overlay.demo { background: rgba(6,6,10,.76); }
body.touch.portrait.menu #overlay.demo:has(#menu-main.show) { background: rgba(6,6,10,.6); }
body.touch .mt-players-row { display: none; } /* 触屏只能单人，"玩家人数"不显示 */
body.touch .screen {
  overflow-y: auto; overscroll-behavior: contain;
  justify-content: flex-start;
  padding: calc(16px + env(safe-area-inset-top)) 12px calc(16px + env(safe-area-inset-bottom));
}
/* 首尾两个空白撑子平分剩余高度：放得下时内容居中，放不下时撑子缩成 0、从顶部开始可滑动 */
body.touch .screen::before, body.touch .screen::after { content: ''; flex: 1 0 0; }