/* 场景页共用的界面语言：品牌、按钮、提示、过渡遮罩、加载层宿主
   月藏书中（书房）与月下水乡（水乡）两个页面都引入本文件 */
:root{--dsh-ink:#e8dfcc;--dsh-ink-dim:#a4aebb;--dsh-gold:#d7c19c;--dsh-gold-soft:#bfa77f;--dsh-line:#bfac8944;--dsh-panel:#0b1626d9;--dsh-serif:'SimSun',serif}
.dsh-btn{border:1px solid var(--dsh-line);background:var(--dsh-panel);color:inherit;backdrop-filter:blur(14px);border-radius:2px;padding:12px 18px;font-size:11px;letter-spacing:1.6px;cursor:pointer;transition:background .25s ease,color .25s ease,border-color .25s ease}
.dsh-btn:hover:not(:disabled){background:#16233ae6;border-color:#d7c19c66}
.dsh-btn:disabled{opacity:.4;cursor:wait}
.dsh-btn--primary{border-color:#d7c19c88;background:#d7c19c;color:#141d2b}
.dsh-btn--primary:hover:not(:disabled){background:#e6d3ae;color:#141d2b}
.dsh-seal{display:grid;place-items:center;width:34px;height:34px;border:1px solid #c5a16c;color:#dcbb84;font:15px/1.05 var(--dsh-serif);letter-spacing:0;text-align:center}
.dsh-eyebrow{font-size:8px;letter-spacing:2.7px;color:#d0b990;margin:0 0 7px}
.dsh-chapter{font-size:9px;letter-spacing:2px;color:var(--dsh-ink-dim)}
.dsh-hint{font-size:9px;letter-spacing:1.8px;color:var(--dsh-ink-dim);text-shadow:0 2px 8px #000}
.dsh-loader-host{position:fixed;inset:0;z-index:200;border:0;width:100%;height:100%;display:block;background:#89d3db;opacity:1;transition:opacity .85s ease}
.dsh-loader-host.is-done{opacity:0;pointer-events:none}
.dsh-loader-host.is-hidden{display:none}
.dsh-veil{position:fixed;inset:0;z-index:300;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;color:var(--dsh-ink);background:radial-gradient(circle at 50% 46%,#0e1c2e,#04080f 72%);opacity:0;pointer-events:none;transition:opacity .6s ease}
.dsh-veil.is-on{opacity:1;pointer-events:auto}
.dsh-veil b{font:normal 21px var(--dsh-serif);letter-spacing:6px}
.dsh-veil small{font-size:10px;letter-spacing:2px;color:var(--dsh-ink-dim)}
.dsh-veil .dsh-seal{margin-bottom:6px}
@media (max-width:600px){.dsh-btn{padding:11px 13px;font-size:10px;letter-spacing:1.2px}.dsh-seal{width:28px;height:28px;font-size:13px}}

/* ── 右侧「视角」收纳栏：两个场景共用同一位置、样式与折叠行为 ── */
.dsh-rail{position:fixed;right:0;z-index:70;display:flex;align-items:center}
.dsh-rail__panel{display:flex;flex-direction:column;gap:3px;padding:9px 9px 9px 10px;border:1px solid var(--dsh-line);border-right:0;background:#081423e0;backdrop-filter:blur(14px);border-radius:3px 0 0 3px;transition:transform .42s cubic-bezier(.22,.85,.3,1),opacity .3s ease;transform:translateX(0);opacity:1}
.dsh-rail nav{all:unset;display:flex;flex-direction:column;gap:3px}
.dsh-rail__title{margin:0 0 6px;font-size:9px;letter-spacing:2.4px;color:#a4aebb;text-align:center}
.dsh-rail__item{display:block;width:132px;text-align:left;border:0;background:none;color:#cdd6e0;font:inherit;font-size:11px;letter-spacing:1.2px;padding:9px 10px;cursor:pointer;border-radius:2px;transition:background .2s ease,color .2s ease;white-space:nowrap}
.dsh-rail__item:hover{background:#16233ae6;color:#f2e8d4}
.dsh-rail__item i{display:inline-block;width:20px;font-style:normal;font-size:9px;color:#8d99a6;letter-spacing:1px}
.dsh-rail__item[aria-pressed="true"]{background:#d7c19c;color:#182232}
.dsh-rail__item[aria-pressed="true"] i{color:#5c5340}
.dsh-rail__handle{display:flex;flex-direction:column;align-items:center;gap:6px;width:34px;padding:12px 0;border:1px solid var(--dsh-line);border-right:0;background:#0b1626e6;backdrop-filter:blur(14px);color:#d7c19c;font-size:11px;letter-spacing:3px;cursor:pointer;border-radius:3px 0 0 3px;transition:background .2s ease}
.dsh-rail__handle:hover{background:#16233ae6}
.dsh-rail__handle b{writing-mode:vertical-rl;font-weight:400;font-size:11px;letter-spacing:3px;line-height:1}
.dsh-rail__handle em{font-style:normal;font-size:10px;color:#8d99a6;transform:rotate(0deg);transition:transform .3s ease}
.dsh-rail[data-open="false"] .dsh-rail__panel{opacity:0;transform:translateX(18px);pointer-events:none}
.dsh-rail[data-open="true"] .dsh-rail__handle em{transform:rotate(180deg)}
/* ── 右下角操作区 / 左下角提示区（两个场景同位置） ── */
.dsh-tools{display:flex;gap:6px;align-items:center;justify-content:flex-end;flex-wrap:wrap;max-width:min(46vw,640px);pointer-events:auto}
.dsh-tools>*{pointer-events:auto}   /* 顶栏容器在部分页面是 pointer-events:none，工具组要能点 */
.dsh-tools .dsh-btn{padding:9px 12px;font-size:10px;letter-spacing:1px}
.dsh-tools .live{font-size:9px;letter-spacing:1.4px}
.dsh-actions{position:fixed;right:26px;bottom:24px;z-index:60;display:flex;gap:10px;align-items:center}
.dsh-foot{position:fixed;left:36px;bottom:26px;z-index:60;display:flex;flex-direction:column;gap:7px;pointer-events:none}
@media (max-width:600px){
  .dsh-rail__item{width:112px;font-size:10px;padding:8px}
  .dsh-rail__handle{width:30px;padding:10px 0}
  .dsh-actions{right:16px;bottom:18px;flex-wrap:wrap;justify-content:flex-end;max-width:70vw}
  .dsh-foot{left:18px;bottom:16px}
}

/* ── HUD 半透明底：与右侧视角栏同一套材质（后加载，故可覆盖各页自带样式） ── */
:root{--dsh-panel-bg:#081423d9;--dsh-panel-line:#bfac8944;--dsh-panel-blur:blur(14px)}
.compass,#where,#visit-count,#perf,#prompt,#edge-hint,#anchor-panel,#toast,#minimap-panel,#walk-tip{
  background:var(--dsh-panel-bg);border:1px solid var(--dsh-panel-line);border-radius:3px;backdrop-filter:var(--dsh-panel-blur);
}
#where,#visit-count,.compass,#prompt,#edge-hint,#perf{padding:7px 11px}
#minimap-panel{padding:8px}
#anchor-panel{padding:16px 18px}
#toast{padding:9px 14px}
/* 全屏按钮：等宽圆角方块 + 图标真正居中（两个场景一致） */
#fullscreen{display:grid;place-items:center;line-height:1;padding:0;width:38px;height:38px;border-radius:3px;background:var(--dsh-panel-bg);border:1px solid var(--dsh-panel-line);backdrop-filter:var(--dsh-panel-blur);color:inherit;cursor:pointer}
/* 视角栏改为从顶栏下方开始排布，避免在矮窗口里压到右下角的地图 */
.dsh-rail{top:118px;transform:none;align-items:flex-start}
.dsh-rail__panel{max-height:calc(100vh - 250px);overflow:auto}
@media (max-width:600px){.dsh-rail{top:96px}}

/* 指针锁定时整页隐藏光标（浏览器本身也会隐藏，这里再兜一层，避免切换场景后闪现） */
body.pointer-locked,body.pointer-locked *{cursor:none!important}
body.peeking,body.peeking *{cursor:auto!important}   /* 按住 ` 时把鼠标放出来 */
body.walking #scene canvas{cursor:none}

/* 内嵌水乡时：铺满窗口的 iframe + 收起书房自己的界面 */
.dsh-town-frame{position:fixed;inset:0;width:100%;height:100%;border:0;z-index:150;background:#050c18}
body.town-embedded header,body.town-embedded .dsh-rail,body.town-embedded .dsh-actions,
body.town-embedded .dsh-foot,body.town-embedded .caption,body.town-embedded #crosshair,
body.town-embedded #walk-tip,body.town-embedded #touch-walk{display:none!important}