:root{
  --ink:#344b3d;--muted:#718071;--paper:#f8f7ee;--line:#3d58451b;
  --panel:#f8f7eef2;--radius:16px;--small-radius:12px;
  --shadow:0 8px 32px #203c2517;
  --sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;
  --serif:"Songti SC",Georgia,serif;
  --safe-top:env(safe-area-inset-top,0px);--safe-bottom:env(safe-area-inset-bottom,0px);
  --safe-left:env(safe-area-inset-left,0px);--safe-right:env(safe-area-inset-right,0px);
}
*{box-sizing:border-box}
html,body{margin:0;width:100%;height:100%;overflow:hidden;background:var(--paper);color:var(--ink);font:14px var(--sans)}
button,a,input{-webkit-tap-highlight-color:transparent}
button{font:inherit;color:inherit;cursor:pointer;border:0;background:none}
button:focus-visible,a:focus-visible,input:focus-visible{outline:2px solid #4f7553;outline-offset:4px}
button:disabled{opacity:.3;cursor:default}
button:hover{background:#ffffffb0}
button svg{width:19px;height:19px;display:block}
button span[data-icon]{display:inline-flex;flex-shrink:0}
a{color:inherit}
button,input{touch-action:manipulation}
[hidden]{display:none!important}
#app{position:relative;height:100%;width:100%;overflow:hidden}
#world{position:absolute;inset:0;touch-action:none}
#world canvas{display:block;width:100%;height:100%;outline:0}
.ui{position:absolute;transition:opacity .25s}

/* ── 顶栏 ─────────────────────────────── */
.topbar{top:calc(22px + var(--safe-top));left:calc(28px + var(--safe-left));right:calc(28px + var(--safe-right));display:flex;align-items:center;justify-content:space-between;gap:20px;z-index:20;pointer-events:none}
.topbar>*{pointer-events:auto}
.brand{text-decoration:none;font:28px Georgia,serif;letter-spacing:5px;line-height:44px;text-shadow:0 1px 16px #fff8}
.mode-switch{display:flex;padding:5px;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);position:absolute;left:50%;transform:translateX(-50%)}
.mode-switch button{display:flex;gap:8px;align-items:center;padding:11px 19px;border-radius:var(--small-radius);font-size:13px;transition:background .2s;min-height:44px}
.mode-switch button.active{background:#4f6d53;color:#fffdf1}
.icon-button{display:flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:var(--small-radius);background:var(--panel);border:1px solid var(--line)}
.paper-button{display:flex;align-items:center;justify-content:center;gap:9px;border:1px solid var(--line);padding:12px 15px;border-radius:var(--radius);background:var(--panel);font-size:13px;box-shadow:0 4px 20px #203c250a}
.paper-button:hover,.icon-button:hover{background:#fffef5}

/* ── 花园菜单与弹层 ───────────────────── */
.popover{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px;backdrop-filter:blur(12px)}
.garden-menu{position:absolute;right:calc(28px + var(--safe-right));top:calc(82px + var(--safe-top));width:310px;max-height:calc(100% - 106px - var(--safe-top) - var(--safe-bottom));overflow:auto;z-index:30;padding:15px}
.menu-heading{display:flex;align-items:center;justify-content:space-between;font:19px var(--serif);padding-left:7px;margin-bottom:7px}
.menu-heading .icon-button{border:0;background:none}
.garden-menu .environment-menu,.garden-menu .view-menu{position:static;margin-bottom:9px}
.garden-menu .paper-button{width:100%;margin:0;min-height:46px;justify-content:flex-start;background:#e9eddf;box-shadow:none;font-size:13px}
.garden-menu .paper-button svg{width:17px;height:17px}
.garden-menu .paper-button span:last-child{margin-left:auto}
.garden-menu #environment-panel{width:100%;padding:16px 6px;box-shadow:none;background:transparent;border:0}
.garden-menu #view-list{width:100%;display:grid;grid-template-columns:1fr 1fr;box-shadow:none;background:transparent;border:0;padding:0;margin-top:0}
#view-list button{text-align:left;padding:12px;border-radius:var(--small-radius);font-size:13px;min-height:44px}
#view-list button.active{background:#e3e9da}
.control-heading{display:flex;align-items:center;gap:10px;font-size:13px;margin-bottom:10px}
.control-heading output{margin-left:auto;color:var(--muted);font-variant-numeric:tabular-nums;font-size:12px}
.control-heading .icon-button{background:transparent;border:0;width:44px;height:44px;margin:-6px 0}
.control-heading .icon-button svg{width:15px;height:15px}
.light-heading{margin-top:23px}
input[type=range]{width:100%;appearance:none;background:transparent;cursor:pointer;height:32px;margin:0}
input[type=range]::-webkit-slider-runnable-track{height:3px;background:#bdc7b3;border-radius:6px}
input[type=range]::-webkit-slider-thumb{appearance:none;margin-top:-8px;background:#64825b;border:2px solid var(--paper);width:20px;height:20px;border-radius:50%;box-shadow:0 0 0 1px #64825b}
input[type=range]::-moz-range-track{height:3px;background:#bdc7b3}
input[type=range]::-moz-range-thumb{background:#64825b;border:2px solid var(--paper);width:12px;height:12px;border-radius:50%}
.range-labels{display:flex;justify-content:space-between;font-size:10px;color:#7c897a}
.time-presets{display:flex;gap:5px;margin-top:10px}
.time-presets button{flex:1;font-size:12px;padding:8px 4px;border-radius:var(--small-radius);background:#e7ebde;min-height:44px}
.snow-switch{display:flex;align-items:center;margin-top:20px;border-top:1px solid var(--line);padding-top:15px;gap:10px;font-size:12px;cursor:pointer}
.snow-switch input{position:absolute;opacity:0;width:40px;height:28px;right:18px;cursor:pointer}
.switch-track{margin-left:auto;width:35px;height:21px;border-radius:12px;background:#c6cebe;position:relative}
.switch-track:after{content:'';position:absolute;width:15px;height:15px;background:#fffdf2;border-radius:50%;left:3px;top:3px;transition:.2s}
#snow:checked+.switch-track{background:#6d8862}
#snow:checked+.switch-track:after{transform:translateX(14px)}
#snow:focus-visible+.switch-track{outline:2px solid #4e7154;outline-offset:4px}
.menu-actions{display:grid;grid-template-columns:repeat(3,1fr);gap:6px;border-top:1px solid var(--line);padding-top:13px;margin-top:14px}
.menu-actions button{border-radius:var(--small-radius);background:#edefe3;display:flex;align-items:center;flex-direction:column;gap:8px;font-size:12px;padding:13px 3px;min-height:72px}
.menu-actions [aria-pressed=true]{background:#d6e1cb}
.menu-secondary{display:flex;justify-content:space-between;padding-top:10px}
.menu-secondary button{min-height:44px;font-size:12px;color:#677663;border-radius:var(--small-radius);padding:5px 10px}

/* ── 底部提示 / 起身 / 拍照 ───────────── */
.bottom-note{bottom:calc(25px + var(--safe-bottom));left:50%;transform:translateX(-50%);white-space:nowrap;color:#38513f;font-size:11px;pointer-events:none;padding:8px 13px;background:#f9f7e9ad;border-radius:var(--small-radius);transition:opacity 1s;z-index:8}
.bottom-note.quiet{opacity:0}
.bottom-note:hover{opacity:1}
.build-mode .bottom-note{display:none}
.stand-up{bottom:calc(28px + var(--safe-bottom));left:50%;transform:translateX(-50%);z-index:18}
.photo-controls{position:absolute;top:calc(22px + var(--safe-top));left:calc(24px + var(--safe-left));right:calc(24px + var(--safe-right));display:flex;justify-content:space-between;z-index:30}
body.photo-mode .ui{opacity:0;pointer-events:none}
#touch-walk{position:absolute;bottom:calc(27px + var(--safe-bottom));left:calc(30px + var(--safe-left));display:grid;grid-template-columns:repeat(3,42px);grid-template-rows:42px 42px;gap:5px;z-index:14}
#touch-walk button{background:#f8f6e5cf;border-radius:var(--small-radius);border:1px solid var(--line);font-size:19px;user-select:none}
#touch-walk button:first-child{grid-column:2}
#touch-walk button:nth-child(2){grid-column:1;grid-row:2}
#touch-walk button:nth-child(3){grid-column:2;grid-row:2}
#touch-walk button:nth-child(4){grid-column:3;grid-row:2}

/* ── 提示浮层 ─────────────────────────── */
#toast{position:absolute;bottom:83px;left:50%;transform:translate(-50%,10px);background:#faf8eff5;box-shadow:var(--shadow);border:1px solid var(--line);padding:12px 20px;border-radius:var(--radius);font-size:12px;opacity:0;pointer-events:none;transition:.25s;z-index:40;max-width:85%;text-align:center}
#toast.visible{opacity:1;transform:translate(-50%,0)}
.build-mode #toast{top:184px;bottom:auto}

/* ── 园艺面板 ─────────────────────────── */
.library{top:calc(92px + var(--safe-top));bottom:calc(34px + var(--safe-bottom));left:30px;width:286px;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);z-index:17;display:flex;flex-direction:column;overflow:hidden;backdrop-filter:blur(12px)}
.library-head{padding:17px 18px 13px;position:relative}
.library-head h2{font:19px var(--serif);margin:0;letter-spacing:2px}
.library-toggle{position:absolute;right:8px;top:6px;font-size:11px;color:var(--muted);min-height:44px;padding:0 10px;border-radius:var(--small-radius)}
.library.compact{height:61px;bottom:auto}
.library.compact .plant-grid,.library.compact .category-tabs,.library.compact .brush-controls,.library.compact .library-footer{display:none}
.library.compact .library-head h2{font-size:16px;letter-spacing:0;max-width:65%;overflow:hidden;white-space:nowrap;text-overflow:ellipsis}
.menu-open .library,.menu-open .placement,.menu-open .selection{visibility:hidden}
.category-tabs{padding:0 11px 11px;display:flex;gap:2px;border-bottom:1px solid var(--line)}
.category-tabs button{font-size:12px;flex:1;padding:8px 5px;border-radius:var(--small-radius);white-space:nowrap;min-height:44px}
.category-tabs button.active{background:#dfe7d7}
.brush-controls{display:flex;gap:5px;padding:11px 16px 0}
.brush-controls button{flex:1;border:1px solid var(--line);border-radius:var(--small-radius);font-size:11px;padding:7px;min-height:44px}
.brush-controls button.active{background:#dee7d5;border-color:#94a789}
.plant-grid{overflow-y:auto;display:grid;grid-template-columns:1fr 1fr;align-content:start;gap:8px;padding:13px;flex:1;scrollbar-width:thin;scrollbar-color:#b5c2a7 transparent;min-height:0}
.plant-card{text-align:left;background:#eeeee1;border:1px solid transparent;border-radius:var(--small-radius);padding:0 10px 10px;transition:.2s;min-height:135px;overflow:hidden}
.plant-card.selected{border-color:#708d61;background:#e6ebd9}
.plant-card:hover{background:#e4e9d8}
.plant-card img{width:100%;height:88px;object-fit:contain;display:block}
.plant-card strong{display:block;font-size:13px;font-weight:500}
.plant-card small{font-size:10px;color:#7c8976;display:block;margin-top:5px;min-height:12px}
.plant-thumb{display:block;width:100%;height:88px;background:radial-gradient(ellipse at 50% 72%,#8d9f781a,transparent 65%)}
.library-footer{padding:11px 13px;border-top:1px solid var(--line);display:flex;gap:5px;flex-shrink:0;align-items:center;position:relative}
.library-footer button{display:flex;align-items:center;gap:5px;border:1px solid var(--line);font-size:11px;padding:9px 6px;border-radius:var(--small-radius);flex:1;justify-content:center;min-height:44px}
.library-footer button[data-armed]{background:#c86b5c;color:#fffdf1;border-color:#b05a4c}
.library-footer svg{width:13px;height:13px}
.storage-tools{flex:1;font-size:12px;text-align:center}
.storage-tools summary{list-style:none;border:1px solid var(--line);border-radius:var(--small-radius);min-height:44px;display:flex;align-items:center;justify-content:center;cursor:pointer}
.storage-tools summary::-webkit-details-marker{display:none}
.storage-tools>div{position:absolute;bottom:65px;right:9px;left:9px;display:flex;padding:9px;gap:8px;border:1px solid var(--line);background:var(--paper);border-radius:var(--radius);box-shadow:var(--shadow)}
.build-hint{bottom:24px;left:50%;transform:translateX(-50%);font-size:11px;background:#f8f7eedd;border:1px solid var(--line);padding:10px 16px;border-radius:var(--small-radius);z-index:10;max-width:390px;text-align:center;line-height:1.7}
.build-hint button{pointer-events:auto;min-height:44px}
.placing-object .library{visibility:hidden}
.placement{right:30px;top:calc(92px + var(--safe-top));width:236px;padding:18px;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);z-index:22}
.placement strong{font:18px var(--serif)}
.placement-turn{display:flex;align-items:center;gap:8px;margin-top:16px}
.placement-turn button{border-radius:var(--small-radius);background:#e5ebdd;min-width:44px;height:44px}
.placement-turn output{font-size:12px;text-align:center;width:42px;font-variant-numeric:tabular-nums}
.placement-turn #align-placement{font-size:12px;padding:0 10px;margin-left:auto}
.placement p{font-size:11px;color:var(--muted);line-height:1.7;margin:13px 0}
.placement .actions{display:flex;gap:8px}
.placement .actions button{flex:1;padding:11px 8px;border-radius:var(--small-radius);font-size:12px;background:#e5ebdd;min-height:44px}
.placement #confirm-placement{background:#506e56;color:#fffdf1}
.selection{right:30px;top:calc(92px + var(--safe-top));width:228px;padding:20px;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);z-index:17;box-shadow:var(--shadow)}
.selection h3{font:18px var(--serif);margin:0 0 16px}
.selection label{display:block;font-size:12px;margin-bottom:10px}
.selection label input{margin-top:8px}
.selection .actions{display:flex;gap:8px;margin-top:13px}
.selection button{font-size:12px;padding:9px 13px;background:#e3e9d9;border-radius:var(--small-radius);min-height:44px}
.selection p{font-size:11px;line-height:1.7;color:#78836d}
.object-info{bottom:76px;left:50%;transform:translateX(-50%);padding:23px 20px 20px;width:292px;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);z-index:16;box-shadow:var(--shadow)}
.object-info>strong{font:18px var(--serif)}
.object-info>.icon-button{position:absolute;right:4px;top:4px;width:44px;height:44px;border:0;background:transparent}
.object-info>p{font-size:12px;line-height:1.8;color:var(--muted);margin:10px 0 15px}
.object-info>.paper-button{box-shadow:none;background:#e2e9d7;width:100%;font-size:12px;min-height:44px}

/* ── 对话框 / 加载屏 ──────────────────── */
dialog{color:var(--ink);border:1px solid var(--line);background:var(--paper);border-radius:22px;max-width:610px;width:calc(100% - 32px);max-height:calc(100% - 48px - var(--safe-top) - var(--safe-bottom));margin-top:auto;margin-bottom:auto;padding:32px;box-shadow:0 20px 100px #283f3440;overflow-y:auto}
dialog::backdrop{background:#34473765;backdrop-filter:blur(6px)}
dialog h2{font:27px var(--serif);margin:8px 0 20px}
dialog p{font-size:13px;line-height:1.9;color:#67735f}
dialog h3{font:18px var(--serif);margin-top:25px}
dialog .close{position:absolute;right:15px;top:15px;border:0;background:transparent}
dialog .guide-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px 25px;margin:20px 0}
dialog .guide-grid div{font-size:12px;line-height:1.8;border-bottom:1px solid var(--line);padding:10px 0}
dialog .guide-grid strong{display:block;font-weight:500;margin-bottom:5px}
dialog .source-list{display:flex;flex-direction:column;gap:10px;font-size:12px;margin:18px 0}
dialog a{line-height:1.8;text-underline-offset:4px}
dialog .small{font-size:11px;color:#788773}
#fieldnotes{max-width:420px;padding:38px 32px}
#fieldnotes h2{margin-top:22px;font:24px var(--serif)}
#fieldnotes p{font-size:15px;line-height:2.1}
#fieldnotes .small{font-size:11px}
#fieldnotes .paper-button{width:100%;margin-top:24px;background:#e4e9d9}
.notes-date{color:#8c846d;font-size:12px;letter-spacing:2px}
.notes-rule{width:42px;height:1px;background:#b8bc9f;margin:27px 0 20px}
#loading{position:absolute;inset:0;background:#f1f1e4;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:20px;z-index:100;transition:opacity .6s}
#loading svg{width:44px;height:44px;animation:breathe 2s infinite}
#loading span{font:19px var(--serif);letter-spacing:3px}
#loading.done{opacity:0;pointer-events:none}
@keyframes breathe{50%{opacity:.4}}
.error-message{line-height:1.8;text-align:center;padding:25px}
.error-message button{border:1px solid #718568;padding:10px 24px;margin-top:18px;border-radius:12px}

/* ── 响应式 ───────────────────────────── */
@media(max-width:900px){
  .topbar{left:20px;right:20px;top:18px}
  .brand{font-size:23px;letter-spacing:3px}
  .mode-switch button{padding:10px 13px;gap:6px}
  .garden-menu{right:20px}
  .library{left:20px;width:260px}
  .selection,.placement{right:20px}
  .bottom-note{font-size:10px}
}
@media(max-width:760px){
  .topbar{top:calc(16px + var(--safe-top));left:calc(18px + var(--safe-left));right:calc(18px + var(--safe-right))}
  .brand{font-size:23px;line-height:44px}
  .mode-switch{position:fixed;top:auto;bottom:calc(14px + var(--safe-bottom));left:50%;width:288px;max-width:calc(100% - 28px - var(--safe-left) - var(--safe-right));padding:5px;box-shadow:0 5px 28px #2e41372b;transform:translateX(-50%)}
  .mode-switch button{flex:1;justify-content:center;padding:10px 12px;font-size:13px;gap:7px;min-height:46px}
  .garden-menu{top:calc(74px + var(--safe-top));right:calc(14px + var(--safe-right));left:calc(14px + var(--safe-left));width:auto;max-height:calc(100% - 164px - var(--safe-top) - var(--safe-bottom));padding:13px 16px}
  .library,.library.compact{top:auto;left:calc(14px + var(--safe-left));right:calc(14px + var(--safe-right));width:auto;bottom:calc(86px + var(--safe-bottom));max-height:calc(100% - 174px - var(--safe-top) - var(--safe-bottom))}
  .library{height:410px}
  .library.compact{height:60px}
  .plant-grid{grid-template-columns:repeat(3,1fr);gap:7px;padding:10px}
  .plant-card{min-height:112px;padding:0 8px 10px}
  .plant-card img,.plant-thumb{height:68px}
  .bottom-note{bottom:calc(88px + var(--safe-bottom));font-size:11px;max-width:calc(100% - 32px);white-space:normal;text-align:center}
  .build-hint{top:calc(74px + var(--safe-top));bottom:auto;max-width:calc(100% - 36px);font-size:11px;padding:8px 13px;pointer-events:none}
  .object-info,.placement,.selection{top:auto;bottom:calc(86px + var(--safe-bottom));left:calc(14px + var(--safe-left));right:calc(14px + var(--safe-right));width:auto;transform:none;max-height:calc(100% - 190px - var(--safe-top) - var(--safe-bottom));overflow:auto}
  .selection{bottom:calc(156px + var(--safe-bottom))}
  #touch-walk{display:none}
  #toast,.build-mode #toast{top:calc(78px + var(--safe-top));bottom:auto;font-size:12px;max-width:calc(100% - 36px)}
  dialog .guide-grid{grid-template-columns:1fr}
  dialog{padding:28px 23px}
  #fieldnotes{padding:34px 27px}
}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}