:root{
  --bg:#E9ECE6; --panel:#F7F8F4; --ink:#1F2A2E; --muted:#5D6B6E; --line:#C9D0C8;
  --wood:#D2AE7A; --wood-deep:#A9814D; --path:#1E5E8C; --action:#2F5D50; --action-ink:#fff;
  --bad:#B4232C; --warn:#B7790A; --yield:#6B4E9B; --field:#fff;
  --num:system-ui,-apple-system,"Segoe UI","PingFang TC",sans-serif;
  --body:system-ui,-apple-system,"PingFang TC","Noto Sans TC","Microsoft JhengHei",sans-serif;
  box-sizing:border-box;
  padding-top:env(safe-area-inset-top,0px); padding-bottom:env(safe-area-inset-bottom,0px);
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#151B1D; --panel:#1D2629; --ink:#E3E8E4; --muted:#9AA8A9; --line:#34413F;
    --wood:#8E6D44; --wood-deep:#6A4F2E; --path:#7DB8E8; --action:#5E9C88; --action-ink:#0F1A17;
    --bad:#E5636B; --warn:#E3A832; --yield:#B39AE0; --field:#253033;
  }
}
:root[data-theme="dark"]{
  --bg:#151B1D; --panel:#1D2629; --ink:#E3E8E4; --muted:#9AA8A9; --line:#34413F;
  --wood:#8E6D44; --wood-deep:#6A4F2E; --path:#7DB8E8; --action:#5E9C88; --action-ink:#0F1A17;
  --bad:#E5636B; --warn:#E3A832; --yield:#B39AE0; --field:#253033;
}
html{scroll-padding-top:env(safe-area-inset-top,0px)}
html:lang(zh-Hans){--body:system-ui,-apple-system,"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif}
html:lang(ja){--body:system-ui,-apple-system,"Hiragino Sans","Yu Gothic UI","Yu Gothic",Meiryo,"Noto Sans JP",sans-serif}
html:lang(en){--body:system-ui,-apple-system,"Segoe UI",Roboto,"Noto Sans TC",sans-serif}
.langSel{margin-left:auto;display:flex;align-items:center;gap:6px;font-size:13px;color:var(--muted)}
.langSel select{width:auto;padding:3px 6px;font-size:13px}
*,*::before,*::after{box-sizing:inherit}
[hidden]{display:none!important}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--body);font-size:15px;line-height:1.6}
header{display:flex;align-items:baseline;gap:16px;flex-wrap:wrap;padding:20px 24px 8px;max-width:1400px;margin:0 auto}
header h1{font-family:var(--num);font-weight:600;font-size:30px;letter-spacing:.01em;margin:0}
header h1 span{font-family:var(--body);font-weight:500;font-size:18px;margin-left:8px}
header p{margin:0;color:var(--muted);font-size:14px}
.ver{font-size:12px;color:var(--muted);border:1px solid var(--line);border-radius:20px;padding:1px 10px}
main{display:grid;grid-template-columns:320px minmax(0,1fr);gap:20px;padding:12px 24px 40px;max-width:1400px;margin:0 auto}
aside{display:flex;flex-direction:column;gap:14px}
section.box{background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:14px 16px}
section.box h2{font-size:15px;font-weight:700;margin:0 0 10px}
.row{display:grid;grid-template-columns:1fr 132px;align-items:center;gap:8px;margin:7px 0}
html:lang(ja) .row,html:lang(en) .row{grid-template-columns:1fr 104px}
html:lang(ja) .row:has(select),html:lang(en) .row:has(select){grid-template-columns:1fr 132px}
.internal{font-size:12px;color:#fff;background:var(--warn);border-radius:20px;padding:1px 10px}
.row label{font-size:14px;color:var(--ink)}
.row small{display:block;color:var(--muted);font-size:12px;line-height:1.35}
input[type=number],select,input[type=text]{width:100%;font:inherit;font-size:14px;color:var(--ink);background:var(--field);border:1px solid var(--line);border-radius:6px;padding:5px 8px}
input:focus-visible,select:focus-visible,button:focus-visible,summary:focus-visible{outline:2px solid var(--path);outline-offset:2px}
button{font:inherit;font-size:14px;border-radius:6px;border:1px solid var(--line);background:var(--field);color:var(--ink);padding:6px 12px;cursor:pointer}
button.primary{background:var(--action);color:var(--action-ink);border-color:var(--action);font-weight:500}
.filebtns{display:flex;gap:8px;flex-wrap:wrap}
.filebtns label.primary{display:inline-block;background:var(--action);color:var(--action-ink);border-radius:6px;padding:6px 12px;cursor:pointer;font-weight:500;font-size:14px}
.filebtns input{position:absolute;width:1px;height:1px;opacity:0}
.note{font-size:12px;color:var(--muted);line-height:1.5;margin:8px 0 0}
.stage{display:flex;flex-direction:column;gap:16px;min-width:0}
.canvasWrap{position:relative;background:var(--panel);border:1px solid var(--line);border-radius:10px;overflow:hidden}
canvas{display:block;width:100%;height:440px}
.legend{position:absolute;left:12px;bottom:10px;display:flex;gap:12px;flex-wrap:wrap;font-size:12px;color:var(--muted);background:color-mix(in srgb,var(--panel) 85%,transparent);padding:4px 8px;border-radius:6px}
.legend i{display:inline-block;width:12px;height:8px;margin-right:4px;vertical-align:middle;border-radius:2px}
.canvasTools{position:absolute;right:10px;top:10px;display:flex;gap:6px}
.empty{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;flex-direction:column;gap:10px;color:var(--muted);text-align:center;padding:20px}
/* 時間讀數：本頁唯一的視覺重點 */
.readout{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,1fr);gap:0;background:var(--panel);border:1px solid var(--line);border-radius:10px;overflow:hidden}
.readout .main{padding:18px 22px;border-right:1px solid var(--line)}
.readout .cap{font-size:14px;color:var(--muted)}
.big{font-family:var(--num);font-weight:600;font-size:76px;line-height:1;letter-spacing:-.01em;margin:6px 0 4px;font-variant-numeric:tabular-nums}
.big em{font-style:normal;font-size:30px;font-weight:500;margin:0 10px 0 4px;color:var(--muted)}
.range{font-size:14px;color:var(--muted)}
.readout .side{padding:18px 22px;display:flex;flex-direction:column;gap:10px;justify-content:center}
.naive{font-family:var(--num);font-size:34px;font-weight:500;color:var(--muted);text-decoration:line-through;text-decoration-thickness:2px;line-height:1}
.gap{font-size:14px}
.gap b{font-family:var(--num);font-size:20px;font-weight:600;color:var(--warn)}
.stats{display:flex;gap:18px;flex-wrap:wrap;font-size:13px;color:var(--muted)}
.stats b{font-family:var(--num);font-size:19px;color:var(--ink);font-weight:600;margin-right:2px}
.cols{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:16px}
.tableWrap{overflow-x:auto}
table{width:100%;border-collapse:collapse;font-size:13.5px}
th,td{text-align:left;padding:6px 6px;border-bottom:1px solid var(--line);white-space:nowrap}
th{color:var(--muted);font-weight:500}
td.n{font-family:var(--num);font-size:16px;font-variant-numeric:tabular-nums}
tr.hl td{background:color-mix(in srgb,var(--path) 12%,transparent)}
td select,td input{padding:3px 6px;font-size:13px}
td input{width:72px}
.warns{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}
.warns li{border-left:3px solid var(--warn);padding:4px 0 4px 10px;font-size:14px;line-height:1.5}
.warns li.bad{border-color:var(--bad)}
.warns li.yield{border-color:var(--yield)}
.warns h3{font-size:13px;color:var(--muted);font-weight:500;margin:12px 0 6px}
.calRow{display:flex;gap:6px;align-items:center;flex-wrap:wrap}
.calRow input{width:64px}
.calState{font-size:13px;margin-top:6px}
.consent{display:flex;gap:8px;align-items:flex-start;font-size:12px;color:var(--muted);line-height:1.5;margin-top:10px}
.consent input{margin-top:3px}
details{font-size:14px}
summary{cursor:pointer;color:var(--muted)}
textarea{width:100%;height:180px;font-family:ui-monospace,Menlo,monospace;font-size:12px;background:var(--field);color:var(--ink);border:1px solid var(--line);border-radius:6px;padding:8px;margin-top:8px}
footer{max-width:1400px;margin:0 auto;padding:0 24px 32px;font-size:12px;color:var(--muted)}
@media (max-width:980px){
  main{grid-template-columns:1fr}
  aside{display:contents}
  aside > section{order:3}
  aside > section:first-child{order:1}
  .stage{order:2}
  .cols{grid-template-columns:1fr}
  canvas{height:340px}
}
@media (max-width:560px){
  header,main,footer{padding-left:14px;padding-right:14px}
  .readout{grid-template-columns:1fr}
  .readout .main{border-right:0;border-bottom:1px solid var(--line)}
  .big{font-size:60px}
}
#svgHost{position:absolute;left:-99999px;top:0;visibility:hidden;width:10px;height:10px;overflow:hidden}

/* v0.3.2：原本的行內樣式改為 class，CSP 不再需要 unsafe-inline */
.mt0{margin-top:0}.mt6{margin-top:6px}.mt8{margin-top:8px}.mt10{margin-top:10px}.mt12{margin-top:12px}
.sw-wood{background:var(--wood)}.sw-pocket{background:var(--wood-deep)}.sw-path{background:var(--path)}.sw-bad{background:var(--bad)}.sw-warn{background:var(--warn)}
.emptyTitle{font-size:17px;color:var(--ink)}.emptySub{font-size:13px}
.emptyErr{font-size:16px;color:var(--bad)}
.importNote{color:var(--warn)}
#warnBox h3.first{margin-top:0}#warnBox p.note.flush{margin:0}
/* 模式切換 */
.modes{display:flex;gap:6px;max-width:1400px;margin:0 auto;padding:4px 24px 10px}
.modes button{display:inline-flex;align-items:center;gap:8px;padding:7px 14px;border:1px solid var(--line);border-radius:20px;background:transparent;color:var(--muted);font:inherit;font-size:14px;cursor:pointer}
.modes button[aria-selected="true"]{background:var(--action);border-color:var(--action);color:var(--action-ink)}
.modes .soon{font-size:11px;border:1px solid currentColor;border-radius:10px;padding:0 6px;opacity:.85}
/* 3D 預告 */
.m3{max-width:1400px;margin:0 auto;padding:12px 24px 40px}
.m3 .box{max-width:760px;padding:20px 24px}
.m3 .box h2{font-size:20px}
.m3 ul{padding-left:1.2em;margin:10px 0 14px}
.m3 li{margin:6px 0}
.m3 .fmt{display:inline-block;font-family:var(--num);font-size:15px;border:1px solid var(--line);border-radius:6px;padding:1px 8px;margin-left:6px}
.m3 .thanks{color:var(--action);font-weight:500;margin-top:10px}
/* 文字連結式按鈕、資料說明對話框 */
.linkBtn{background:none;border:0;padding:0;font:inherit;color:var(--path);text-decoration:underline;cursor:pointer}
dialog.privacy{max-width:560px;width:calc(100% - 32px);border:1px solid var(--line);border-radius:12px;background:var(--panel);color:var(--ink);padding:22px 24px}
dialog.privacy::backdrop{background:rgba(0,0,0,.35)}
dialog.privacy h2{margin:0 0 10px;font-size:18px}
dialog.privacy dl{margin:0}
dialog.privacy dt{font-weight:600;margin-top:12px}
dialog.privacy dd{margin:2px 0 0;color:var(--muted);font-size:14px}
dialog.privacy .close{margin-top:18px}

/* v1.0.0：舊版 2D 估算頁回首頁的連結 */
.homeLink{font-size:13px;color:var(--muted);text-decoration:none;margin-left:8px}
.homeLink:hover{text-decoration:underline}