@font-face{font-family:"Yizhan Brush";src:url("assets/fonts/yizhan-brush.ttf") format("truetype");font-display:swap}
:root{color-scheme:light;--bg:#f4f6f8;--surface:#fff;--text:#182c3d;--muted:#687985;--line:#d9e1e6;--accent:#907850;--tech:#397f88;--stage-top:#e6edef;--stage-bottom:#c9d5dc;--button:#213745;--button-text:#f3ede2}
:root[data-theme=night]{color-scheme:dark;--bg:#10191f;--surface:#19262f;--text:#e6edf1;--muted:#9cacb7;--line:#33434e;--accent:#c6ac7e;--tech:#8fc4cc;--stage-top:#1c303e;--stage-bottom:#111c25;--button:#d7c6a5;--button-text:#182c3d}
*{box-sizing:border-box}html{touch-action:manipulation}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"PingFang TC","Noto Sans TC","Microsoft JhengHei",sans-serif}button,a{-webkit-tap-highlight-color:transparent;touch-action:manipulation}button{font:inherit;color:inherit;cursor:pointer}button:disabled{opacity:.4;cursor:default}button:focus-visible,a:focus-visible,summary:focus-visible{outline:2px solid var(--tech);outline-offset:5px}a{color:var(--tech);text-underline-offset:5px}[hidden]{display:none!important}.page{max-width:820px;margin:auto;padding:max(22px,env(safe-area-inset-top)) 20px max(24px,env(safe-area-inset-bottom))}header{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:20px;border-bottom:1px solid var(--line)}.back{text-decoration:none;color:var(--text);font-size:16px}.brand{font-family:"Yizhan Brush",serif;font-size:36px;font-weight:400;letter-spacing:.08em}.theme{display:flex;gap:2px;padding:3px;background:var(--line);border-radius:8px}.theme button{border:0;background:none;padding:9px 10px;font-size:14px;border-radius:6px;color:var(--muted)}.theme button[aria-pressed=true]{background:var(--surface);color:var(--text)}h1,h2,p{margin:0}.page-heading{padding:30px 0 25px}.eyebrow{font-size:13px;color:var(--accent);letter-spacing:.18em}.page-heading h1{font-size:32px;font-weight:500;letter-spacing:.1em;margin:10px 0}.muted{color:var(--muted);font-size:16px;line-height:1.8}.deity-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.deity{position:relative;min-height:212px;text-align:left;padding:20px;background:linear-gradient(135deg,color-mix(in srgb,var(--tech) 5%,transparent),transparent 65%),var(--surface);border:1px solid var(--line);border-radius:14px;display:flex;flex-direction:column;align-items:flex-start;overflow:hidden;transition:border-color .2s,transform .2s}.deity:active{transform:scale(.97)}.deity:hover{border-color:var(--accent)}.deity-index{font:12px ui-monospace,monospace;letter-spacing:.04em;color:var(--muted)}.deity-glyph{position:absolute;right:18px;top:46px;font-family:"Kaiti TC",KaiTi,"Songti TC",serif;font-size:68px;font-weight:300;color:var(--accent);opacity:.8}.deity strong{font-size:23px;font-weight:500;margin-top:auto;padding-top:100px}.deity-note{font-size:13px;color:var(--muted);margin-top:7px}.ritual-heading{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:23px 0 17px}.ritual-heading h1{font-family:"Songti TC","Noto Serif TC",serif;font-size:28px;font-weight:500;letter-spacing:.14em}.text-button{border:0;background:none;color:var(--muted);font-size:14px;min-height:40px;padding:6px 0}.stage{height:clamp(290px,46svh,480px);position:relative;background:radial-gradient(ellipse at 50% 25%,var(--stage-top),var(--stage-bottom) 90%);border:1px solid var(--line);border-radius:18px;overflow:hidden}.stage canvas{width:100%;height:100%;display:block}.stage-top,.stage-bottom{position:absolute;left:18px;right:18px;pointer-events:none}.stage-top{top:16px;display:flex;justify-content:space-between;gap:8px;color:var(--muted);font-size:12px;letter-spacing:.08em}.stage-bottom{bottom:17px;text-align:center}#status{color:var(--text);font-size:14px;line-height:1.7}.progress-track{height:2px;margin:12px auto 0;width:112px;background:color-mix(in srgb,var(--muted) 25%,transparent);overflow:hidden}.progress-track span{height:100%;display:block;background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform .1s linear}.stage-error{position:absolute;inset:25% 20px auto;padding:22px;border:1px solid var(--line);background:var(--surface);border-radius:12px;text-align:center;line-height:1.7;z-index:3}.sensor-setup{display:flex;justify-content:center;align-items:center;gap:22px;padding:25px 0}.primary,.secondary{min-height:46px;border-radius:8px;padding:11px 20px;font-size:16px}.primary{background:var(--button);color:var(--button-text);border:1px solid var(--button)}.secondary{background:transparent;color:var(--text);border:1px solid var(--line)}.shake-controls{text-align:center;padding:22px 0 0}.shake-button{width:116px;height:116px;border-radius:50%;border:1px solid var(--accent);background:var(--button);color:var(--button-text);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;margin:auto;position:relative;box-shadow:0 0 0 6px var(--bg),0 0 0 7px var(--line);touch-action:none;user-select:none;-webkit-user-select:none;-webkit-touch-callout:none;transition:box-shadow .15s,transform .15s}.shake-button.holding{transform:scale(.95);box-shadow:0 0 0 7px var(--bg),0 0 0 9px var(--tech),0 0 30px color-mix(in srgb,var(--tech) 24%,transparent)}.shake-symbol{font-family:"Kaiti TC",KaiTi,"Songti TC",serif;font-size:38px;line-height:1.1}.shake-button span:last-child{font-size:13px;letter-spacing:.06em}#instruction{font-size:14px;line-height:1.8;margin:20px 0 1px;color:var(--muted)}#switch-input{font-size:13px}.result{margin:23px auto 0;padding:26px 24px;border:1px solid var(--line);border-top:2px solid var(--accent);background:var(--surface);border-radius:12px;max-width:620px}.result-heading{display:flex;align-items:center;justify-content:space-between;gap:14px;margin:10px 0}.result-heading h2{font-size:29px;font-weight:500}.grade{padding:5px 10px;font-size:14px;border:1px solid var(--line);border-radius:4px;color:var(--accent)}.result-story{font-family:"Songti TC",serif;font-size:19px;color:var(--muted);margin:12px 0}.poem{font-family:"Songti TC","Noto Serif TC",serif;font-size:clamp(21px,5.6vw,30px);line-height:2.15;letter-spacing:.08em;padding:18px 0;text-align:center;color:var(--text);border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin-top:20px}.poem p{white-space:normal}.result-note{font-size:13px;line-height:1.7;color:var(--muted);margin:20px 0 10px}.result>a{font-size:13px}.result-actions{display:flex;gap:10px;margin-top:24px}.result-actions button{flex:1}footer{padding-top:34px;color:var(--muted);font-size:13px;line-height:1.9}footer summary{cursor:pointer;font-size:14px}footer p{margin-top:14px}body.is-holding{overscroll-behavior:none}#result:focus{outline:none}
@media(min-width:600px){.page{padding:32px}.page-heading{padding:40px 0 30px}.deity{min-height:240px;padding:26px}.deity-glyph{font-size:90px;right:30px}.deity strong{font-size:27px}.stage{height:480px}.shake-controls{padding-top:28px}.result{padding:32px}.poem{letter-spacing:.15em}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}

/* 3D 主畫面與圓掣合併，控制層浮在畫面之上。 */
.stage{height:clamp(510px,70svh,760px);isolation:isolate}
.stage-top{z-index:2}
.stage-bottom{bottom:218px;z-index:2}
.stage .shake-controls{position:absolute;left:12px;right:12px;bottom:13px;z-index:4;padding:0;pointer-events:none}
.stage .shake-controls button{pointer-events:auto}
.stage .shake-button{box-shadow:0 0 0 6px color-mix(in srgb,var(--stage-bottom) 75%,transparent),0 0 0 7px var(--line),0 12px 32px #0002}
.stage .shake-button.holding{box-shadow:0 0 0 7px color-mix(in srgb,var(--stage-bottom) 75%,transparent),0 0 0 9px var(--tech),0 0 30px color-mix(in srgb,var(--tech) 24%,transparent)}
.stage #instruction{margin-top:17px;font-size:13px}
.stage .sensor-setup{position:absolute;bottom:35px;left:16px;right:16px;z-index:4;flex-wrap:wrap;padding:0;gap:16px}
.stage:has(.sensor-setup:not([hidden])) .stage-bottom{bottom:110px}
.stage:has(.shake-controls[hidden]):has(.sensor-setup[hidden]) .stage-bottom{bottom:20px}
@media(min-width:600px){.stage{height:clamp(580px,72svh,800px)}}

/* 求籤期間固定視窗；結果頁恢復正常閱讀捲動。 */
html,body{max-width:100%;overflow-x:clip}
.page,main,#ritual,.stage{min-width:0;max-width:100%}
.stage canvas{position:absolute;inset:0;max-width:100%;touch-action:none}
html.ritual-locked{height:100%;overflow:hidden;overscroll-behavior:none;touch-action:none}
html.ritual-locked body{position:fixed;inset:0;width:100%;height:100%;overflow:hidden;overscroll-behavior:none;touch-action:none}
.ritual-locked .page{height:100%;height:100svh;min-height:0;display:flex;flex-direction:column;padding-top:max(12px,env(safe-area-inset-top));padding-bottom:max(12px,env(safe-area-inset-bottom));overflow:hidden}
.ritual-locked header{flex:none;padding-bottom:12px}
.ritual-locked main{flex:1;min-height:0;display:flex;flex-direction:column}
.ritual-locked #ritual{flex:1;min-height:0;display:flex;flex-direction:column}
.ritual-locked .ritual-heading{flex:none;padding:14px 0 12px}
.ritual-locked .stage{height:auto!important;min-height:0;flex:1;width:100%}
.ritual-locked footer{display:none}
@media(max-height:650px){.ritual-locked .shake-button{width:92px;height:92px}.ritual-locked .shake-symbol{font-size:30px}.ritual-locked .stage-bottom{bottom:183px}.ritual-locked #instruction{margin-top:12px}.ritual-locked .stage-top{top:12px}.ritual-locked .ritual-heading{padding:8px 0}.ritual-locked header{padding-bottom:8px}}

/* Readings use the existing surfaces; ritual canvas and gestures stay unchanged. */
.lookup{margin-top:28px;padding:22px;background:var(--surface);border:1px solid var(--line);border-radius:12px}
.lookup h2{font-size:20px;font-weight:500;margin-bottom:18px}
.lookup-fields{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,1fr) auto;gap:10px;align-items:end}
.lookup-fields label{display:flex;flex-direction:column;gap:8px;font-size:14px;color:var(--muted);min-width:0}
.lookup-fields select,.lookup-fields input{min-width:0;width:100%;height:46px;padding:9px 10px;border-radius:8px;border:1px solid var(--line);background:var(--bg);color:var(--text);font:inherit;font-size:16px}
.lookup-fields .primary{padding-inline:16px}
.lookup-hint,.lookup-error{font-size:14px;line-height:1.7;margin-top:12px;color:var(--muted)}
.lookup-error{color:var(--text);border-left:2px solid var(--accent);padding-left:10px}
.reading-lead{margin:24px 0 28px;border-left:3px solid var(--accent);padding:3px 0 3px 16px}
.reading-lead h3{font-size:14px;font-weight:500;color:var(--accent);margin:0 0 10px}
#reading-summary{font-size:20px;line-height:1.85;font-weight:500}
.topic-buttons{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:22px}
.topic-button{flex:1 0 auto;min-height:44px;padding:9px 13px;border:1px solid var(--line);border-radius:7px;background:transparent;font-size:16px;color:var(--muted)}
.topic-button[aria-pressed=true]{border-color:var(--accent);background:color-mix(in srgb,var(--accent) 12%,var(--surface));color:var(--text)}
#topic-title{margin:0 0 12px;font-size:20px;font-weight:500}
#topic-meaning{font-size:17px;line-height:1.95}
.evidence-details{margin-top:18px;font-size:14px;color:var(--muted);line-height:1.8}
.evidence-details summary,.line-details summary{cursor:pointer;min-height:44px;align-content:center}
#topic-evidence{padding-left:18px;margin:10px 0 0}
#topic-evidence li{margin:10px 0}
#topic-evidence span{display:block}
.evidence-quote{color:var(--accent);font-family:"Songti TC",serif;font-size:16px}
.line-details{margin-top:25px;padding-top:15px;border-top:1px solid var(--line)}
.line-details>summary{font-size:18px;font-weight:500}
.poem{font-family:inherit;border:0;padding:0;text-align:left;letter-spacing:normal;line-height:1.8;margin:8px 0 20px}
.line-reading{padding:16px 0;border-bottom:1px solid var(--line)}
.original-line{font-family:"Songti TC","Noto Serif TC",serif;font-size:clamp(19px,4.7vw,25px);letter-spacing:.04em;color:var(--accent)}
.plain-line{margin-top:8px;font-size:16px;line-height:1.85;color:var(--text)}
.line-details>a{font-size:14px;line-height:1.8}
.lookup-again{display:block;margin:14px auto 0;color:var(--tech);font-size:15px}
@media(max-width:360px){.lookup{padding:16px}.lookup-fields{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}.lookup-fields .primary{grid-column:1/-1}.result{padding:22px 18px}}

.poem-original{font-family:"Songti TC","Noto Serif TC",serif;font-size:clamp(20px,5.1vw,28px);line-height:1.9;letter-spacing:.06em;text-align:center;padding:20px 0;margin:0 0 25px;border-block:1px solid var(--line)}
.poem-original .poem-line-button{display:block;width:100%;padding:12px 8px;border:0;border-left:3px solid transparent;background:transparent;color:var(--text);font:inherit;letter-spacing:.06em;text-align:center;min-height:48px}.poem-original .poem-line-button[aria-pressed=true]{border-left-color:var(--accent);background:var(--bg);color:var(--accent)}.guided-reading{padding:20px;margin:16px 0 24px;background:var(--bg);border:1px solid var(--line);border-radius:12px}.guided-reading h3{margin:0 0 12px;font-size:18px}.guide-plain{font-size:20px;line-height:1.7}.guide-cue{color:var(--muted);font-size:15px;line-height:1.7}.guide-nav{display:flex;gap:12px;margin:18px 0}.guide-nav button{flex:1;min-height:44px}.guide-questions{border-top:1px solid var(--line);padding-top:12px;line-height:1.8}.guide-questions summary{cursor:pointer;min-height:44px}.guide-questions li{margin:8px 0}
.jiao-entry{appearance:none;position:relative;text-align:left;display:flex;flex-direction:column;gap:12px;padding:22px;border:1px solid var(--line);border-radius:12px;background:var(--surface);color:var(--text)}.jiao-entry strong{font-size:26px}#jiao-stage{height:320px;max-height:45svh;position:relative;display:grid;place-items:center;background:radial-gradient(ellipse at center,var(--surface),var(--bg));border:1px solid var(--line);border-radius:16px;overflow:hidden;margin:18px 0}#jiao-canvas{width:100%;height:100%;display:block}#jiao-fallback{display:flex;gap:40px}.jiao-piece{display:grid;place-items:center;width:95px;height:65px;border-radius:65% 65% 30% 30%;background:#a92d22;box-shadow:inset 0 -12px 15px #5c160f;color:#fff;transform:rotate(-20deg)}.jiao-piece[data-face=flat]{background:#de9468;box-shadow:0 8px 0 #82271c}.jiao-piece+span{transform:rotate(20deg)}#jiao-throw{display:block;min-width:150px;margin:20px auto}.jiao-method{margin-top:24px;line-height:1.8}#jiao-faces{text-align:center}