:root{color-scheme:light;--ink:#193d40;--paper:#f4eddf;--line:#bcb29a;--muted:#637270}*{box-sizing:border-box}body{margin:0;color:var(--ink);background:#214d50;font:300 16px/1.5 'Noto Serif TC','PingFang TC',sans-serif;min-height:100vh}body:before{content:'';position:fixed;inset:-25px;z-index:-1;background:linear-gradient(#17414470,#163e45bb) center/cover;filter:blur(16px)}.masthead{text-align:center;color:#f6eedb;padding:20px 0 17px}.masthead h1{font-size:42px;letter-spacing:10px;margin:0;font-family:'Noto Serif TC',sans-serif;font-weight:300}.masthead p{font-size:12px;letter-spacing:4px;margin:5px 0 0}.app{max-width:1320px;margin:0 auto;border:1px solid #c3b696;border-radius:15px;overflow:hidden;box-shadow:0 20px 75px #061e2570;background:var(--paper)}header{height:66px;display:flex;align-items:center;justify-content:space-between;padding:0 30px;background:linear-gradient(100deg,#f5f0e5,#eae5d9)}.brand{color:var(--ink);text-decoration:none;font:300 25px 'Noto Serif TC',sans-serif;letter-spacing:4px}.brand small{font:12px 'Noto Serif TC',sans-serif;letter-spacing:2px;margin-left:14px}.header-actions{display:flex;gap:12px;align-items:center}button,input,select,textarea{font:inherit}button{cursor:pointer}button{border:1px solid #a79f8c;background:#f2eddf;color:var(--ink);border-radius:8px;padding:10px 15px;font-size:14px;transition:background .15s}button:hover{background:#e5dbc5}button.solid,.scene-tabs button[aria-pressed=true]{background:#1f4d51;color:#fff9e9;border-color:#1f4d51}button.solid:hover{background:#306468}#sound{border:0;background:transparent;font-size:19px}#sound span{font-size:12px}#sound[aria-pressed=true]{color:#a66025}.preview{height:620px;position:relative;background-color:#214d50;background-image:image-set(url("assets/sea.webp") type("image/webp"),url("assets/sea.jpg") type("image/jpeg"));background-position:center 48%;background-size:cover;background-repeat:no-repeat}body[data-scene=rain] .preview{background-image:image-set(url("assets/rain.webp") type("image/webp"),url("assets/rain.jpg") type("image/jpeg"))}body[data-scene=hill] .preview{background-image:image-set(url("assets/hill.webp") type("image/webp"),url("assets/hill.jpg") type("image/jpeg"))}.brightness-panel{position:absolute;top:18px;left:50%;transform:translateX(-50%);width:350px;max-width:85%;display:flex;align-items:center;gap:15px;padding:8px 18px;border:1px solid #dfd1b473;background:#706452c4;backdrop-filter:blur(12px);color:#fff6df;border-radius:10px;z-index:2;font-size:14px}.brightness-panel label{margin:0}.brightness-panel input{min-width:0;flex:1}.brightness-panel output{font-size:14px;min-width:44px}.stage{position:absolute;top:88px;width:100%;display:flex;flex-direction:column;align-items:center}.board-shell{position:relative;width:65%;padding:12px;background:linear-gradient(110deg,#302d28,#131413 45%,#37332d);border:3px solid #5c5549;border-radius:4px;box-shadow:0 12px 20px #0006,inset 0 0 0 3px #100e0b}.board-shell:before,.board-shell:after{content:'';position:absolute;bottom:100%;height:88px;width:6px;background:repeating-linear-gradient(#151b1a 0 5px,#5a5b50 6px 8px);box-shadow:2px 0 3px #0005}.board-shell:before{left:7%}.board-shell:after{right:7%}canvas{display:block;width:100%;height:auto;background:#010201}#expand{position:absolute;right:15%;bottom:10px;background:#142425a3;color:#eee6cf;border-color:#c1b79866;font-size:11px;padding:4px 9px;opacity:0}.stage:hover #expand,#expand:focus-visible{opacity:1}.scene-caption{position:absolute;bottom:65px;left:28px;color:#fdf3dd;text-shadow:0 1px 5px #000}.scene-caption span{font-size:15px}.scene-caption small{display:block;font-size:12px}.ticket{position:relative;display:grid;grid-template-columns:minmax(0,1fr) 310px;margin:-40px 18px 0;background:radial-gradient(circle at 0 50%,transparent 0 11px,var(--paper) 12px);border-radius:9px 9px 0 0;box-shadow:0 -8px 25px #18322b15;z-index:3}.ticket:before{content:'';position:absolute;inset:0;pointer-events:none;opacity:.18;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Cpath filter='url(%23n)' opacity='.3' d='M0 0h180v180H0z'/%3E%3C/svg%3E")}.ticket-editor,.ticket-stub{position:relative;padding:20px 24px}.scene-tabs{display:flex;gap:10px;margin-bottom:10px}.scene-tabs button{min-width:0;flex:1;border-radius:18px;font-size:17px;padding:7px 10px;border-color:#d9d0be;background:#eae4d6}.scene-tabs span{font-size:14px;margin-left:8px}label{display:block;font-size:14px;margin:7px 0 5px}input:not([type=range]),select,textarea{width:100%;background:#ffffff38;border:1px solid #577072;border-radius:6px;padding:8px 12px;color:var(--ink);font-size:16px}textarea{display:block;resize:vertical;min-height:84px;line-height:1.45;font-size:23px;padding:12px 14px 22px}.text-box{position:relative}#count{position:absolute;right:10px;bottom:5px;font-size:11px;color:#556a68}.ticket-actions{display:grid;grid-template-columns:1.15fr 1fr 1fr 1fr;gap:8px;margin-top:12px;align-items:stretch}.ticket-actions select{font-size:13px;padding:8px;min-width:0}.ticket-actions button{padding:9px 7px;font-size:14px;white-space:nowrap}.ticket-stub{border-left:3px dotted #527778;padding:25px;display:flex;flex-direction:column;justify-content:center;background:radial-gradient(circle at 100% 50%,#d8d1c2 0 10px,transparent 11px)}h2{font:300 30px 'Noto Serif TC',sans-serif;margin:0 0 16px;letter-spacing:4px}.journey{font-size:16px;border-bottom:1px solid #b7ac92;padding-bottom:12px;display:flex;justify-content:space-between;gap:7px}.ticket-stub p{font-size:16px;margin:12px 0 0;overflow-wrap:anywhere}#ticketenglish{font-size:12px;color:#6b766e;margin-top:4px}.ticket-seal{display:flex;justify-content:space-between;align-items:center;margin-top:18px}.wave-mark{font-size:45px;line-height:.5;letter-spacing:-4px;color:#315959}.stamp{display:inline-block;padding:5px 9px;border:3px double #b5614a;color:#ad5943;transform:rotate(-8deg);font:300 24px 'Noto Serif TC',sans-serif;letter-spacing:3px}.serial{text-align:right;margin-top:14px;font:12px monospace;letter-spacing:2px}#status{font-size:12px;color:#60716b;margin:9px 0 0}#download{display:block;color:#245e60;padding:9px}progress{width:100%;accent-color:#285f62}#cancel{margin-top:8px}.advanced{border-top:1px dashed #b8af9b;margin-top:14px;padding-top:10px}.advanced summary{font-size:13px;cursor:pointer;color:#5a726e}.advanced-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px 18px;margin:10px 0}.advanced small{font-size:11px;color:#6a786e}.colors{display:flex;gap:8px;align-items:center}.swatch{width:24px;height:24px;border:3px solid var(--paper);border-radius:50%;background:var(--c);padding:0}.swatch.selected{outline:1px solid #3a6562}#colorname{font-size:11px}.playbar{display:flex;align-items:center;gap:10px;font-size:12px;padding:8px 0}.playbar button{font-size:12px;padding:6px}.track{height:3px;flex:1;background:#d2c8af}.track i{height:100%;display:block;background:#285f62}input[type=range]{accent-color:#ffc568;height:18px;margin:0}footer{max-width:1320px;margin:0 auto;color:#f2ead7;padding:20px 10px;display:flex;justify-content:space-between;font-size:12px}button:disabled,input:disabled,select:disabled,textarea:disabled{opacity:.5;cursor:wait}:focus-visible{outline:2px solid #218285;outline-offset:3px}[hidden]{display:none!important}.board-expanded{overflow:hidden}.board-expanded .preview{position:fixed;inset:0;height:100dvh;z-index:20;background-color:#0e2628}.board-expanded .stage{top:50%;transform:translateY(-50%)}.board-expanded .board-shell{width:min(94%,calc((100dvh - 130px)*2.6667))}.board-expanded .board-shell:before,.board-expanded .board-shell:after{display:none}.board-expanded #expand{opacity:1;position:static;margin-top:15px;font-size:14px;padding:9px 14px}.board-expanded .scene-caption{display:none}
@media(max-width:1400px){.app{margin:0 24px}.preview{height:600px}}@media(max-width:760px){.masthead{display:none}.app{margin:0;border:0;border-radius:0}header{height:60px;padding:0 16px}.brand{font-size:23px;letter-spacing:2px}.brand small{font-size:10px;margin-left:7px}.header-actions .share-button{display:none}.preview{height:360px;background-position:center center}.brightness-panel{top:10px;width:280px;padding:7px 12px;gap:10px}.stage{top:65px}.board-shell{width:94%;padding:6px;border-width:2px}.board-shell:before,.board-shell:after{height:65px}.scene-caption{bottom:45px;left:15px;display:none}#expand{opacity:1;right:5%;font-size:10px;bottom:5px}.ticket{display:block;margin:-24px 8px 0;border-radius:9px 9px 0 0}.ticket-editor{padding:12px 12px 10px}.scene-tabs{gap:6px;margin-bottom:9px}.scene-tabs button{padding:6px 3px;font-size:16px}.scene-tabs span{font-size:11px;margin-left:3px}textarea{font-size:20px;min-height:76px}.ticket-actions{grid-template-columns:1fr 1fr}.ticket-actions #apply{grid-row:1;grid-column:1/-1}.ticket-actions #quote{grid-row:2;grid-column:1/-1;font-size:14px}.ticket-actions button{padding:9px;font-size:14px}.ticket-stub{border-left:0;border-top:2px dashed #69817a;padding:16px;display:grid;grid-template-columns:1fr 100px;gap:4px 12px}.ticket-stub h2{font-size:19px;margin:0;grid-column:1;letter-spacing:2px}.journey{font-size:13px;grid-column:1;grid-row:2;border-bottom:0;padding:0;justify-content:start}#ticketquote{font-size:13px;grid-column:1;margin:3px 0}#ticketenglish{grid-column:1;margin:0}.ticket-seal{grid-column:2;grid-row:1/4;margin:0;justify-content:center}.wave-mark{display:none}.stamp{font-size:17px;letter-spacing:1px;padding:5px}.serial{grid-column:2;margin:0;font-size:10px}.advanced-grid{grid-template-columns:1fr}footer{background:#214d50;font-size:10px;padding:14px;gap:20px}.board-expanded .preview{height:100dvh}}

#apply{display:flex;align-items:center;justify-content:center;min-height:44px}button,input,select,textarea{font-weight:300}.ticket-actions .share-button{white-space:normal;font-size:14px}

button,.ticket-actions button,.ticket-actions .share-button{font-size:16px;font-weight:600}.scene-tabs span,#sound span{font-size:14px;font-weight:600}.playbar button,#expand{font-size:14px;font-weight:600}

.scene-tabs{display:grid;grid-template-columns:repeat(3,minmax(0,1fr))}@media(max-width:760px){body:not(.board-expanded) .preview{height:clamp(360px,90vw,440px);background-size:100% auto;background-position:center bottom;background-repeat:no-repeat;background-color:#214d50}body:not(.board-expanded) .stage{top:58px}.scene-tabs button{min-height:40px}}

#share-dialog{width:min(720px,94vw);max-height:92dvh;overflow:auto;border:1px solid #bcb29a;border-radius:16px;background:var(--paper);color:var(--ink);padding:22px}#share-dialog::backdrop{background:#08272ccc;backdrop-filter:blur(5px)}.share-heading{display:flex;justify-content:space-between;align-items:center;gap:16px}.share-heading h2{font-size:24px;margin:0;letter-spacing:2px}#share-close{font-size:24px;padding:0 12px}#share-preview,#share-video-preview{width:100%;height:auto;max-height:min(42dvh,460px);object-fit:contain;background:#214d50;margin-top:12px;border-radius:8px}#share-status{font-size:14px;min-height:22px}.share-actions{display:flex;gap:10px}.share-actions button{flex:1;min-height:44px}.share-social{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin:12px 0 8px}.share-social button{min-height:44px;font-size:14px}.share-social button[aria-pressed=true]{background:#1f4d51;color:#fff9e9;border-color:#1f4d51}@media(max-width:480px){#share-dialog{padding:14px}.share-actions button,.share-social button{font-size:13px;padding:9px 6px}}

#share-video-preview{margin-top:16px}#share-mp4,#share-static,#share-stop{margin-top:12px}#share-mp4{width:100%;background:#214d50;color:#fff6df}
#share-preview,#share-video-preview{display:block;width:auto;max-width:100%;max-height:min(60dvh,600px);margin:12px auto 0}

/* Desktop: one inner app frame, no outer 光字所 page */
.masthead,footer{display:none}
body{background:var(--paper)}
body:before{display:none}
.app{max-width:none;margin:0;border:0;border-radius:0;box-shadow:none;min-height:100vh}
@media(max-width:1400px){.app{margin:0}}
.advanced-grid{grid-template-columns:1fr 1fr}

.board-shell{width:92%;padding:0;background:#17564d;border:0;border-radius:0;box-shadow:0 16px 30px #04161480;overflow:visible}
canvas{background:#17564d;border-radius:0}
body:not(.board-expanded) .preview{height:max(620px,calc(34.5vw + 180px))}
.plate-options{display:flex;align-items:center;gap:10px;margin:0 0 10px}
#slowmark{min-width:52px;padding:6px 12px;font:600 20px 'Noto Serif TC',sans-serif;letter-spacing:3px}
#slowmark[aria-pressed=true]{background:#1f4d51;color:#fff9e9;border-color:#1f4d51}
.plate-options span{font-size:12px;color:#60716b}
@media(max-width:760px){.board-shell{width:94%;padding:0;border-width:0}body:not(.board-expanded) .preview{height:clamp(360px,90vw,440px)}.plate-options span{font-size:11px}}

/* Illustrated paper scene leaves the live sign separate from the artwork. */
body[data-scene] .preview{background-color:#f8f1df;background-position:center bottom;background-size:100% auto}
body[data-scene=rain] .preview{background-image:url("assets/hero-rain-paper.webp")}
body[data-scene=sea] .preview{background-image:url("assets/hero-sea-paper.webp")}
body[data-scene=hill] .preview{background-image:url("assets/hero-hill-paper.webp")}
body[data-scene]:not(.board-expanded) .preview{height:calc(61.3vw + 140px)}
body[data-scene] .board-shell:before,body[data-scene] .board-shell:after{display:none}
body[data-scene] .brightness-panel{background:#f8f1dfe6;color:#193d40;border-color:#bcb29a}
body[data-scene] .scene-caption{color:#193d40;text-shadow:none}
.advanced .plate-options{margin:14px 0}
#export-preview{width:100%;margin:12px 0;border-radius:12px;background:#17564d}
.share-actions{margin-top:12px}
#content-guidance{font-size:13px;color:var(--muted);margin:8px 0}
#content-error{font-size:14px;color:#9c3028;margin:8px 0}
[aria-invalid=true]{outline:2px solid #b34c40;outline-offset:1px}

/* Desktop scale: a smaller sign with a more readable header and editor. */
@media(min-width:761px){
 body{font-size:18px}
 /* Header ~3/4 of previous 132px; tighten brand to match. */
 header{height:99px;padding:0 36px}
 .brand{font-size:38px}
 .brand small{font-size:18px;margin-left:12px}
 .header-actions{gap:18px}
 #sound{font-size:24px}
 #sound span{font-size:16px}
 /* Less empty beige under brightness; board stays above the tram art. */
 body[data-scene]:not(.board-expanded) .preview{height:calc(52vw + 110px)}
 body:not(.board-expanded) .brightness-panel{top:10px}
 body:not(.board-expanded) .board-shell{width:46%}
 body:not(.board-expanded) .stage{
  top:58px;
  bottom:auto;
 }
 body:not(.board-expanded) #expand{right:28%;bottom:8px}
 .brightness-panel{width:410px;font-size:18px}
 .brightness-panel output{font-size:18px;min-width:52px}
 label,.scene-tabs span{font-size:18px}
 button,.ticket-actions button,.ticket-actions .share-button{font-size:18px}
 input:not([type=range]),select{font-size:20px}
 textarea{font-size:28px;min-height:104px}
 #count{font-size:14px}
 .ticket-actions select{font-size:16px}
 .ticket-stub h2{font-size:34px}
 .journey,.ticket-stub p{font-size:18px}
 #ticketenglish,.serial{font-size:15px}
 .scene-caption span{font-size:20px}
 .scene-caption small,#status,.advanced summary{font-size:16px}
 #content-guidance,#content-error{font-size:16px}
 .advanced small,#colorname,.plate-options span{font-size:14px}
 .playbar{font-size:16px}
 .playbar button,#expand{font-size:16px}
 .share-heading h2{font-size:28px}
 #share-status,.share-social button,.share-actions button{font-size:17px}
}
@media(min-width:761px) and (max-width:1100px){
 .ticket{grid-template-columns:minmax(0,1fr) 280px}
 .ticket-actions{grid-template-columns:1fr 1fr}
 .ticket-stub{padding:20px}
 header{padding:0 24px}
}