:root{color-scheme:dark;--bg:#111113;--surface:#1c1c20;--border:#303035;--text:#ededee;--muted:#939399;--accent:#e5bc45;--paper:#19191e;--shadow:#0008}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:14px/1.5 -apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",sans-serif;min-height:100dvh}body.light{color-scheme:light;--bg:#f4f0e7;--surface:#fffdf7;--border:#ded7c6;--text:#343025;--muted:#8d8371;--paper:#fffdf8;--shadow:#68532a14}button,a,input{-webkit-tap-highlight-color:transparent}button{font:inherit;cursor:pointer;color:inherit}button:focus-visible,a:focus-visible,input:focus-visible{outline:2px solid var(--accent);outline-offset:4px}button:disabled{opacity:.3;cursor:default}[hidden]{display:none!important}header{height:80px;display:flex;align-items:center;justify-content:space-between;padding:0 34px;gap:14px}.brand{display:flex;align-items:center;gap:8px;border:1px solid var(--border);border-radius:30px;padding:5px 12px 5px 6px;text-decoration:none;color:var(--text);font-size:13px}.seal{display:grid;place-items:center;background:var(--accent);color:#2d260e;width:26px;height:26px;border-radius:50%;font-family:serif;font-size:18px}.badge{font-size:10px;color:var(--accent);border:1px solid #e5bc4555;background:#e5bc4512;border-radius:4px;padding:0 4px}nav{position:absolute;left:50%;transform:translateX(-50%);display:flex;gap:12px}nav button{border:1px solid var(--border);background:var(--surface);color:var(--muted);border-radius:30px;min-width:66px;padding:5px 17px}nav button[aria-selected=true]{background:var(--accent);color:#30270e;border-color:var(--accent);font-weight:600;box-shadow:0 0 24px #e5bc4525}.quiet{border:0;background:none;color:var(--muted);font-size:12px;padding:8px}main{padding:0 3.6%;max-width:1800px;margin:auto}.hint{display:table;margin:-5px auto 12px;padding:4px 15px;border-radius:30px;font-size:12px;color:#bba354;border:1px solid #bba35424;background:#bba3540b}.hint span{margin-right:5px}.paper{height:calc(100dvh - 203px);min-height:300px;max-height:950px;position:relative;overflow:hidden;border:1px solid var(--border);border-radius:19px;background:var(--paper);box-shadow:inset 0 0 35px var(--shadow),0 8px 40px #0001}.paper>img{position:absolute;width:100%;height:100%;object-fit:contain;opacity:.25;pointer-events:none;user-select:none}canvas{position:absolute;inset:0;width:100%;height:100%;touch-action:none;cursor:crosshair}.placeholder{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;pointer-events:none;color:var(--muted);user-select:none}.placeholder>div{font:clamp(70px,13vw,195px)/1.5 "STXingkai","KaiTi",serif;letter-spacing:.08em;opacity:.32}.placeholder p{font-size:12px;letter-spacing:.25em;opacity:.55}.paper-label{position:absolute;left:22px;bottom:17px;font-size:10px;color:var(--muted);opacity:.45;pointer-events:none;letter-spacing:3px}.toolbar{position:relative;display:flex;align-items:center;justify-content:center;width:max-content;max-width:100%;gap:7px;margin:4px auto 0;border:1px solid var(--border);background:var(--surface);padding:9px 14px;border-radius:50px;box-shadow:0 8px 26px var(--shadow)}.toolbar>button{display:flex;align-items:center;flex-direction:column;gap:2px;min-width:40px;background:none;border:0;color:var(--muted);font-size:10px;padding:0 5px}.toolbar>button:hover:not(:disabled){color:var(--accent)}.icon{font-family:Arial,sans-serif;font-size:24px;line-height:27px}.toolbar i{height:27px;width:1px;background:var(--border);margin:0 5px}.gold,.toolbar>.gold{display:inline-flex;justify-content:center;align-items:center;border:0;border-radius:30px;background:var(--accent);color:#35290b;font-size:12px;font-weight:700;padding:10px 20px;box-shadow:0 0 20px #e5bc4524;text-decoration:none}.toolbar>.gold:hover{color:#35290b;filter:brightness(1.07)}.footer{text-align:center;font-size:10px;letter-spacing:4px;color:var(--muted);opacity:.4;margin:9px 0}.pen-panel{position:absolute;bottom:76px;left:50%;transform:translateX(-50%);width:260px;padding:19px;background:var(--surface);border:1px solid var(--border);border-radius:16px;box-shadow:0 10px 40px var(--shadow)}.panel-title{font-weight:600;margin-bottom:14px}.pen-panel label{display:flex;align-items:center;justify-content:space-between;gap:8px;font-size:12px;color:var(--muted);margin-top:15px}.pen-panel input[type=range]{width:115px;accent-color:var(--accent)}input[type=color]{width:36px;height:26px;border:0;background:none}#swatches{display:flex;gap:10px}#swatches button{width:27px;height:27px;border:2px solid #8885;border-radius:50%}#swatches button[aria-pressed=true]{outline:2px solid var(--accent);outline-offset:3px}dialog{background:var(--surface);color:var(--text);border:1px solid var(--border);border-radius:24px;padding:32px;width:min(620px,92vw);text-align:center;box-shadow:0 30px 100px #0008}dialog::backdrop{background:#000a;backdrop-filter:blur(7px)}dialog h2{font-size:20px;margin:12px 0 5px}dialog p{font-size:12px;color:var(--muted);margin:0 0 24px}.close{position:absolute;right:14px;top:9px;border:0;background:none;color:var(--muted);font-size:26px}.preview-board{border:1px solid var(--border);border-radius:10px;margin-bottom:22px;background:repeating-conic-gradient(#7772 0% 25%,transparent 0% 50%) 0/20px 20px}.preview-board img{display:block;width:100%}.action{min-width:150px}.large-seal{margin:0 auto;background:var(--accent);color:#35290b;width:58px;height:58px;display:grid;place-items:center;border-radius:50%;font:36px serif}#custom-dialog{max-width:370px}#qr{display:block;width:190px;margin:20px auto;border-radius:10px}.contact-placeholder{padding:30px 10px;margin-bottom:24px;border:1px dashed var(--border);border-radius:12px;color:var(--muted)}.contact-placeholder small{font-size:11px}#toast{position:fixed;bottom:110px;left:50%;transform:translateX(-50%);background:var(--text);color:var(--bg);padding:9px 18px;border-radius:30px;font-size:12px;opacity:0;pointer-events:none;transition:opacity .2s;white-space:nowrap}#toast.visible{opacity:1}@media(max-width:640px){header{height:107px;padding:15px 16px 48px;align-items:center}.brand{font-size:12px}nav{top:66px;gap:9px}nav button{font-size:12px;padding:4px 16px}.hint{font-size:10px;margin:9px auto 12px;padding:4px 10px}main{padding:0 12px}.paper{height:calc(100dvh - 265px);min-height:280px;border-radius:15px}.placeholder>div{font-size:19vw;writing-mode:vertical-rl;letter-spacing:.12em}.placeholder p{font-size:10px;letter-spacing:.12em;margin-top:10px}.toolbar{gap:2px;padding:10px 7px;margin-top:12px;width:100%}.toolbar>button{min-width:34px;font-size:9px;padding:0 4px}.toolbar i{margin:0 3px}.toolbar>.gold{font-size:10px;padding:10px}.icon{font-size:22px}.footer{margin-top:14px}.paper-label{left:14px;bottom:12px}.pen-panel{bottom:78px}}@media(max-width:360px){.toolbar{gap:0}.toolbar i{margin:0 1px}.toolbar>.gold{padding:9px 7px}.badge{display:none}}@media(max-height:500px) and (orientation:landscape){header{height:55px}.hint{display:none}.paper{height:calc(100dvh - 140px);min-height:160px}.footer{display:none}}

/* 白底黑字原稿：只显示字迹，不修改原文件。 */
.paper>img{padding:32px;filter:invert(1);mix-blend-mode:screen}
body.light .paper>img{filter:none;mix-blend-mode:multiply}
.paper{height:calc(100dvh - 220px)}
nav button{white-space:nowrap}
@media(max-width:640px){nav{gap:6px}nav button{padding:4px 12px}.paper>img{padding:16px}.paper{height:calc(100dvh - 275px)}}
@media(max-height:500px) and (orientation:landscape){.paper{height:calc(100dvh - 145px)}}
/* 日本語・スマートフォン向けレイアウト */
body{font-family:-apple-system,BlinkMacSystemFont,"Noto Sans JP","Yu Gothic","Meiryo",sans-serif}
.header-actions{display:flex;gap:6px;align-items:center}
.header-actions button{min-height:44px}
#landscape{color:var(--accent);border:1px solid var(--border);border-radius:24px;padding:5px 12px}
.brand{flex-shrink:0}
.toolbar>button{min-width:48px;min-height:44px;justify-content:center;white-space:nowrap;font-size:10px}
.toolbar>.gold{min-height:44px}
.toolbar .icon{line-height:24px}
.pen-panel{z-index:10;max-height:calc(100dvh - 90px);overflow-y:auto}
.pen-panel label{min-height:32px;margin-top:8px}
#swatches{gap:8px}
#swatches button{width:30px;height:34px;flex-shrink:0}
#toast{z-index:40;white-space:normal;width:max-content;max-width:calc(100vw - 32px);text-align:center}
#rotate-guide{position:fixed;inset:0;z-index:30;display:grid;place-items:center;padding:24px max(24px,env(safe-area-inset-right)) 24px max(24px,env(safe-area-inset-left));overflow:auto;background:var(--bg)}
.rotate-card{text-align:center;max-width:370px}
.phone-symbol{font-size:70px;line-height:1.3;color:var(--accent)}
.eyebrow{font-size:10px;letter-spacing:3px;color:var(--accent);margin:22px 0 14px}
.rotate-card h1{font-size:23px;font-weight:600;letter-spacing:.04em}
.rotate-card p:not(.eyebrow){font-size:13px;line-height:1.9;color:var(--muted)}
.rotate-card .action{margin:20px 0 8px;min-height:48px;width:100%}
#orientation-help{font-size:12px;max-width:300px;margin:16px auto}
#portrait-continue{min-height:44px;text-decoration:underline;text-underline-offset:5px}
.rotation-guide-open{overflow:hidden}
.close{min-width:44px;min-height:44px}
@media(max-width:1100px){
 header{padding-left:18px;padding-right:18px}
 .brand .badge{display:none}
 .header-actions{gap:3px}
 .header-actions button{font-size:11px}
}
@media(max-width:640px) and (orientation:portrait){
 body{min-height:100dvh}
 header{height:116px;position:relative;padding:8px 12px 58px;gap:6px}
 .brand{padding:4px 7px;font-size:11px;gap:5px}
 .seal{width:23px;height:23px;font-size:16px}
 .header-actions #import{max-width:64px;line-height:1.4;padding:4px}
 #landscape{padding:5px 8px;font-size:10px}
 nav{top:64px;gap:8px;width:calc(100% - 24px);justify-content:center}
 nav button{min-height:44px;flex:1;padding:4px 8px;font-size:12px}
 .hint{display:none}
 main{padding:0 8px}
 .paper{height:calc(100dvh - 204px - env(safe-area-inset-bottom));min-height:180px}
 .placeholder>div{writing-mode:horizontal-tb;font-size:15vw}
 .toolbar{gap:1px;padding:6px 4px;margin:8px auto 0;border-radius:18px;justify-content:space-around}
 .toolbar>button{min-width:38px;padding:0 2px;font-size:9px}
 .toolbar>i{display:none}
 .toolbar>.gold{font-size:9px;padding:6px;max-width:62px;white-space:normal}
 .footer{font-size:9px;letter-spacing:1px;margin:7px 0;padding-bottom:env(safe-area-inset-bottom)}
 .paper>img{padding:12px}
 dialog{padding:26px 16px}
}
@media(orientation:landscape) and (max-height:600px) and (max-width:1200px){
 body{height:100dvh;min-height:0;overflow:hidden;display:flex;flex-direction:column;padding:env(safe-area-inset-top) max(10px,env(safe-area-inset-right)) env(safe-area-inset-bottom) max(10px,env(safe-area-inset-left));overscroll-behavior:none}
 header{position:relative;height:52px;min-height:52px;padding:2px 4px;gap:8px}
 .brand{font-size:11px;padding:4px 8px 4px 4px;gap:5px}
 .brand .seal{width:23px;height:23px;font-size:16px}
 nav{position:static;transform:none;gap:6px;margin:auto}
 nav button{min-height:44px;padding:5px 12px;font-size:11px;min-width:64px}
 .header-actions{gap:4px}
 .header-actions button{font-size:10px;padding:4px 7px;white-space:nowrap}
 #landscape{padding:4px 9px}
 main{flex:1;min-height:0;width:100%;max-width:none;padding:0;display:flex;flex-direction:column;gap:5px}
 .hint,.footer{display:none}
 .paper{flex:1;min-height:0;max-height:none;height:auto;border-radius:12px}
 .paper>img{padding:12px 24px}
 .paper-label{font-size:9px;bottom:8px;left:14px;letter-spacing:1px}
 .toolbar{flex-shrink:0;margin:0 auto 5px;padding:4px 12px;gap:10px;height:56px;border-radius:30px}
 .toolbar>button{min-width:48px;font-size:10px}
 .toolbar>.gold{padding:8px 18px;min-width:100px}
 .pen-panel{bottom:64px;padding:12px 16px;width:280px}
 .panel-title{margin-bottom:8px}
 .pen-panel label{margin-top:5px;min-height:28px}
 #swatches button{height:28px}
 dialog{max-height:calc(100dvh - 20px);padding:20px;overflow-y:auto}
 dialog h2{margin:0 0 4px;font-size:16px}
 dialog p{margin-bottom:12px}
 .preview-board{max-width:65%;margin:0 auto 12px}
 #toast{bottom:75px}
}
@media(orientation:landscape) and (max-height:600px) and (max-width:740px){
 .brand strong{display:none}
 .brand{border:0;padding:0}
 .toolbar{gap:6px}
 .header-actions #import{max-width:76px;white-space:normal;line-height:1.4}
 nav button{padding:4px 8px}
}
/* スマートフォン：画板の大きさを変えず、メニューだけを重ねて開閉する。 */
#menu-toggle{display:none}
body.compact-ui{height:100dvh;min-height:0;padding:0;overflow:hidden;overscroll-behavior:none}
.compact-ui main{position:fixed;inset:0;display:block;width:100%;height:100%;max-width:none;padding:0;margin:0}
.compact-ui .paper{position:absolute;inset:0;width:100%;height:100%;min-height:0;max-height:none;border:0;border-radius:0;box-shadow:none}
.compact-ui .paper>img{padding:max(12px,env(safe-area-inset-top)) max(14px,env(safe-area-inset-right)) max(12px,env(safe-area-inset-bottom)) max(14px,env(safe-area-inset-left))}
.compact-ui .paper-label{left:max(16px,env(safe-area-inset-left));bottom:max(10px,env(safe-area-inset-bottom));font-size:9px;letter-spacing:1px}
.compact-ui .hint,.compact-ui .footer{display:none}
.compact-ui #menu-toggle{display:block;position:fixed;z-index:22;top:max(8px,env(safe-area-inset-top));right:max(10px,env(safe-area-inset-right));min-width:96px;min-height:44px;border:1px solid var(--border);border-radius:24px;padding:8px 14px;background:var(--surface);color:var(--accent);font-size:12px;box-shadow:0 3px 14px var(--shadow)}
.compact-ui header,.compact-ui .toolbar{display:none}
.compact-ui.menu-open header{display:flex;position:fixed;z-index:20;top:max(6px,env(safe-area-inset-top));left:max(8px,env(safe-area-inset-left));right:calc(max(10px,env(safe-area-inset-right)) + 104px);height:auto;min-height:48px;padding:4px 10px;gap:8px;background:var(--surface);border:1px solid var(--border);border-radius:16px;box-shadow:0 6px 22px var(--shadow)}
.compact-ui header .brand{display:none}
.compact-ui header nav{position:static;transform:none;width:auto;display:flex;gap:5px;margin:0 auto 0 0}
.compact-ui header nav button{min-height:44px;min-width:0;flex:0 1 auto;font-size:11px;padding:4px 10px}
.compact-ui header .header-actions{display:flex;gap:4px}
.compact-ui .header-actions #import{max-width:none;white-space:nowrap;font-size:10px}
.compact-ui.menu-open .toolbar{display:flex;position:fixed;z-index:20;bottom:max(8px,env(safe-area-inset-bottom));left:50%;transform:translateX(-50%);width:max-content;max-width:calc(100% - 24px - env(safe-area-inset-left) - env(safe-area-inset-right));height:auto;min-height:56px;margin:0;padding:5px 10px;gap:6px;border-radius:22px;box-shadow:0 6px 22px var(--shadow)}
.compact-ui .toolbar>button{min-height:44px}
.compact-ui .toolbar>.gold{min-width:0}
.compact-ui .pen-panel{bottom:calc(100% + 8px);max-height:calc(100dvh - 145px);width:min(280px,calc(100vw - 32px))}
.compact-ui.rotation-guide-open #menu-toggle{display:none}
@media(max-width:640px){
 .compact-ui.menu-open header{right:max(8px,env(safe-area-inset-right));top:calc(max(8px,env(safe-area-inset-top)) + 52px);flex-wrap:wrap;padding:8px 10px;gap:6px}
 .compact-ui header nav{width:100%;margin:0;justify-content:stretch}
 .compact-ui header nav button{flex:1}
 .compact-ui header .header-actions{width:100%;justify-content:space-between}
 .compact-ui.menu-open .toolbar{padding:5px;gap:1px;max-width:calc(100% - 12px);width:calc(100% - 12px);justify-content:space-around}
 .compact-ui .toolbar i{display:none}
 .compact-ui .toolbar>button{min-width:36px;font-size:9px;padding:0 2px}
 .compact-ui .toolbar>.gold{font-size:9px;padding:6px;max-width:62px;white-space:normal}
}
/* 練習中にすぐ使える、最小限の履歴操作。 */
#quick-tools{display:none}
.compact-ui #quick-tools{display:flex;align-items:center;position:fixed;z-index:21;left:max(12px,env(safe-area-inset-left));bottom:max(12px,env(safe-area-inset-bottom));padding:3px;gap:3px;background:var(--surface);border:1px solid var(--border);border-radius:28px;box-shadow:0 4px 16px var(--shadow);touch-action:manipulation}
#quick-tools button{display:grid;place-items:center;min-width:44px;min-height:44px;padding:10px;border:0;border-radius:50%;background:transparent;color:var(--accent)}
#quick-tools button:disabled{color:var(--muted);opacity:.4}
#quick-tools button:not(:disabled):active{background:#e5bc4520}
#quick-tools svg{width:23px;height:23px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.quick-divider{width:1px;height:18px;background:var(--border)}
.compact-ui .paper-label{top:max(14px,env(safe-area-inset-top));bottom:auto}
.compact-ui.menu-open #quick-tools,.compact-ui.rotation-guide-open #quick-tools{display:none}

/* お手本は画板の中央80%に収め、周囲に余白を設ける。 */
.paper>img,.compact-ui .paper>img{width:80%;height:80%;left:10%;top:10%;padding:0;object-fit:contain}


/* PCの練習エリアは幅1100pxで中央配置。狭い画面では余白を確保する。 */
@media(min-width:641px){body:not(.compact-ui) main{width:1100px;max-width:calc(100% - 48px);padding-left:0;padding-right:0;margin-left:auto;margin-right:auto}}


/* ゴールドボタンのホバー時も文字のコントラストを確保する。 */
.toolbar>button.gold:hover:not(:disabled),.toolbar>button.gold:focus-visible{color:#35290b;background:#f2ce67}




/* PCではタッチ端末向けの案内と回転操作を表示しない。 */
body:not(.compact-ui) .hint,body:not(.compact-ui) #landscape{display:none}


.site-credit{text-align:center;color:var(--muted);font-size:11px;line-height:20px;padding:12px 0;letter-spacing:.03em}
.site-credit a{color:inherit;text-decoration:none}.site-credit a:hover{color:var(--accent);text-decoration:underline}
.compact-ui .site-credit{position:fixed;right:max(12px,env(safe-area-inset-right));bottom:max(12px,env(safe-area-inset-bottom));z-index:5;padding:0;font-size:10px}
.compact-ui.menu-open .site-credit,.rotation-guide-open .site-credit{display:none}


/* PCの画板と操作メニューの間隔。 */
body:not(.compact-ui) .toolbar{margin-top:32px}


/* なぞり中の選択・画像ドラッグ・iOSの長押しメニューを抑止。 */
.paper,.paper *{-webkit-user-select:none;user-select:none;-webkit-touch-callout:none}
.paper img{-webkit-user-drag:none;pointer-events:none}


/* 公式ロゴのサイズ。背景は透明。 */
.brand{padding:0;border-radius:0;background:transparent}
.studio-logo{display:block;width:160px;height:auto;object-fit:contain}
.consultation-logo{display:table;margin:0 auto 18px;padding:0;border-radius:0;background:transparent}
.consultation-logo img{display:block;width:200px;max-width:100%;height:auto}


/* ロゴは囲みを付けずに表示する。 */
.brand{border:0;background:transparent;box-shadow:none;padding:0;border-radius:0}
.consultation-logo{background:transparent;border:0;box-shadow:none;padding:0;border-radius:0}
body.light .studio-logo,body.light .consultation-logo img{filter:brightness(0)}



/* タッチ端末のダブルタップ拡大を抑止。画板では描画を優先する。 */
body.compact-ui{touch-action:manipulation}
.compact-ui button,.compact-ui a,.compact-ui input{touch-action:manipulation}
.compact-ui .paper,.compact-ui #drawing{touch-action:none}







/* 常設操作バーのアイコン・区切り・無効ボタンも拡大ジェスチャー対象外。 */
.compact-ui #quick-tools,.compact-ui #quick-tools *{touch-action:none;-webkit-user-select:none;user-select:none;-webkit-touch-callout:none}





/* サイン制作の相談ダイアログ */
#custom-dialog{width:480px;max-width:calc(100vw - 28px);padding:40px 28px 22px;border-radius:24px}
#custom-dialog .consultation-logo{margin:0 auto 24px}
#custom-dialog .consultation-logo img{width:174px}
.consult-divider{height:2px;width:32px;background:var(--accent);margin:0 auto 24px;border-radius:2px}
#custom-dialog h2{font-size:23px;line-height:1.6;font-weight:700;letter-spacing:.02em;margin:0 0 12px}
#custom-dialog .consult-description{font-size:13px;line-height:1.9;margin:0 0 28px;color:var(--muted)}
.consult-links{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.consult-links a{display:flex;align-items:center;justify-content:center;gap:8px;min-height:52px;border-radius:12px;font-size:14px;font-weight:700;text-decoration:none;transition:background .15s}
.consult-links a>span{font-size:16px;margin-left:3px}
.consult-line{background:#06c755;color:#fff;border:1px solid #06c755}
.consult-line:hover{background:#05a948;border-color:#05a948}
.consult-line svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linejoin:round}
.consult-site{color:var(--accent);border:1px solid var(--accent);background:#e5bc450a}
.consult-site:hover{background:#e5bc4522}
.consult-back{display:block;width:100%;margin:20px 0 0;padding:12px;min-height:44px;background:none;border:0;color:var(--text);font-size:13px;font-weight:700;border-radius:10px}
.consult-back:hover{background:#8881}
@media(max-width:420px){#custom-dialog{padding:34px 18px 16px}#custom-dialog h2{font-size:20px}.consult-links{gap:8px}.consult-links a{font-size:13px}}
@media(orientation:landscape) and (max-height:500px){#custom-dialog{padding:18px 24px 12px;max-height:calc(100dvh - 16px)}#custom-dialog .consultation-logo{margin-bottom:12px}#custom-dialog .consultation-logo img{width:130px}.consult-divider{margin-bottom:12px}#custom-dialog h2{font-size:20px;margin-bottom:6px}#custom-dialog .consult-description{margin-bottom:14px}.consult-links a{min-height:46px}.consult-back{margin-top:8px}}
/* 画像が増えても選択欄を横スクロールで利用できるようにする。 */
#categories{overflow-x:auto;overscroll-behavior-x:contain;scrollbar-width:thin;max-width:calc(100% - 440px)}
#categories button{flex-shrink:0}
.compact-ui header #categories{min-width:0;max-width:none;flex:1}
.compact-ui header #categories button{flex:0 0 auto}
@media(max-width:640px){.compact-ui header #categories{flex:1 0 100%;max-width:100%}}

/* 画像未登録・読み込み失敗時は、画板の中央に表示する。 */
#placeholder{display:flex;align-items:center;justify-content:center;text-align:center}
#placeholder>div{writing-mode:horizontal-tb;margin:0;letter-spacing:.08em}


/* SP・iPadの常設操作を左上へ縦配置。 */
.compact-ui #quick-tools{top:max(12px,env(safe-area-inset-top));left:max(12px,env(safe-area-inset-left));bottom:auto;flex-direction:column}
.compact-ui #quick-tools .quick-divider{width:18px;height:1px}

/* 書き順の切り替えは練習中も常設。 */
#toggle-order{position:fixed;left:max(12px,env(safe-area-inset-left));bottom:16px;z-index:19;min-width:64px;min-height:44px;padding:8px 12px;border:1px solid var(--border);border-radius:24px;background:var(--surface);color:var(--accent);font-size:12px;font-weight:600;box-shadow:0 3px 14px var(--shadow);touch-action:manipulation}
#toggle-order[aria-pressed=true]{background:var(--accent);color:#35290b}
.compact-ui #toggle-order{top:calc(max(12px,env(safe-area-inset-top)) + 164px);bottom:auto;min-width:52px;padding:8px;font-size:11px}
.rotation-guide-open #toggle-order,.compact-ui.menu-open #toggle-order{display:none}

/* 書き順画像は白背景を含む原図の色と濃さで表示する。 */
.paper>img.order-original,body.light .paper>img.order-original{filter:none;mix-blend-mode:normal;opacity:1!important}

/* 外枠80%を維持し、その内側の上下左右に各5%の余白。 */
#reference-frame{position:absolute;width:80%;height:80%;left:10%;top:10%;pointer-events:none}
#reference-frame.order-original{background:#fff}
#reference-frame>#reference{position:absolute;left:5%;top:5%;width:90%;height:90%;padding:0;object-fit:contain;opacity:.25;filter:invert(1);mix-blend-mode:screen;user-select:none}
body.light #reference-frame>#reference{filter:none;mix-blend-mode:multiply}
#reference-frame>#reference.order-original,body.light #reference-frame>#reference.order-original{filter:none;mix-blend-mode:normal;opacity:1!important}

/* PCの画像切り替えは保存ボタンの右隣へ。 */
body:not(.compact-ui) #toggle-order{position:static;top:auto;left:auto;right:auto;bottom:auto;z-index:auto;min-width:64px;min-height:44px;padding:8px 10px;box-shadow:none;border-radius:12px;font-size:12px}


/* 切り替えボタンも、隣接するツールと同じアイコン＋ラベルに揃える。 */
body:not(.compact-ui) #toggle-order{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;min-width:48px;min-height:44px;padding:0 5px;border:0;border-radius:0;background:none;box-shadow:none;color:var(--muted);font-size:10px;font-weight:400}
body:not(.compact-ui) #toggle-order:hover,body:not(.compact-ui) #toggle-order[aria-pressed=true]{color:var(--accent)}
.compact-ui #toggle-order{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;min-width:52px;min-height:52px;padding:5px;font-size:10px}


body.rotation-guide-open #toggle-order{display:none}






/* 用途と操作説明を、必要なときに開いて読めるようにする。 */
.practice-about{position:relative;display:inline-block;margin-right:14px;text-align:left;letter-spacing:0}
.practice-about summary{cursor:pointer;text-decoration:underline;text-underline-offset:3px;min-height:28px;line-height:28px}
.practice-about .about-content{position:absolute;bottom:calc(100% + 8px);left:50%;transform:translateX(-50%);width:min(440px,calc(100vw - 32px));max-height:70dvh;overflow:auto;z-index:25;background:var(--surface);color:var(--text);border:1px solid var(--border);border-radius:14px;padding:20px;font-size:13px;line-height:1.8;box-shadow:0 8px 30px var(--shadow)}
.about-content h1{font-size:19px;margin:0 0 10px}.about-content h2{font-size:15px;margin:16px 0 8px}.about-content p{margin:8px 0}.about-content ol{padding-left:22px}.about-content a{color:var(--accent)}
.compact-ui .practice-about{margin-right:10px}.compact-ui .practice-about .about-content{position:fixed;bottom:48px;right:12px;left:auto;transform:none}
.noscript-notice{text-align:center;padding:12px}

/* A–Z字帖：タッチ端末ではメニューを開いたときに選択バーを表示。 */
#categories{position:relative;inset:auto;transform:none;display:flex;align-items:center;justify-content:center;gap:8px;width:max-content;max-width:calc(100% - 24px);margin:0 auto 16px;padding:6px 10px;border:1px solid var(--border);border-radius:16px;background:var(--surface);z-index:21}
#categories label{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--muted)}
#categories select{height:44px;min-width:72px;padding:0 10px;font:inherit;font-size:16px;color:var(--text);background:var(--surface);border:1px solid var(--border);border-radius:9px;touch-action:manipulation}
#categories #sheet-select{min-width:100px}
#categories button{width:44px;height:44px;min-width:44px;min-height:44px;padding:0;border:0;border-radius:10px;font-size:26px;color:var(--accent);background:transparent;touch-action:manipulation}
#categories button:hover:not(:disabled){background:#e5bc451a}
body:not(.compact-ui) .paper{height:calc(100dvh - 275px)}
.compact-ui #categories{position:fixed;top:max(8px,env(safe-area-inset-top));left:50%;right:auto;bottom:auto;transform:translateX(-50%);margin:0;padding:2px 4px;gap:2px;max-width:calc(100% - 220px - env(safe-area-inset-left) - env(safe-area-inset-right));border-radius:13px;box-shadow:0 3px 14px var(--shadow)}
.compact-ui #categories .letter-control{font-size:0;gap:0}
.compact-ui #categories select{min-width:56px;height:44px;padding:0 5px;border:0;font-size:16px}
.compact-ui #categories #sheet-select{min-width:84px}
.compact-ui #categories button{flex:none}
.compact-ui #categories{display:none}
.compact-ui.menu-open #categories{display:flex}
.compact-ui.rotation-guide-open #categories{display:none}
.compact-ui.menu-open header:not(:has(.header-actions button:not([hidden]))){display:none}
.compact-ui #reference-frame{top:14%;height:72%}
@media(max-width:560px){.compact-ui #categories{left:70px;transform:none;max-width:calc(100% - 180px);gap:0}.compact-ui #categories button{width:36px;min-width:36px}.compact-ui #categories select{min-width:46px}.compact-ui #categories #sheet-select{min-width:72px}}

/* PC：字帖選択をヘッダー寄りに配置。 */
body:not(.compact-ui) #categories{margin-top:-40px;margin-bottom:32px}

/* PC：ロゴを字帖選択バーの中央に揃える。 */
body:not(.compact-ui) #practice-header .brand{position:relative;top:29px}

#paper-label{top:auto;bottom:17px;left:22px;font-size:13px;letter-spacing:.04em;opacity:1;color:var(--muted)}
.compact-ui #paper-label{top:auto;bottom:max(14px,env(safe-area-inset-bottom));left:max(16px,env(safe-area-inset-left));font-size:12px}

/* 回転案内を狭い縦画面にも収める。 */
#rotate-guide{width:100%;max-width:100vw;min-width:0}.rotate-card{width:100%;min-width:0;overflow-wrap:anywhere}

/* 字帖と同名の動画がある場合だけ再生ボタンを表示。 */
#play-video{position:absolute;right:18px;bottom:14px;z-index:2;display:flex;align-items:center;gap:7px;min-width:72px;min-height:44px;padding:8px 14px;border:1px solid var(--border);border-radius:24px;background:var(--surface);color:var(--accent);font-size:12px;touch-action:manipulation}
#play-video:hover{background:var(--border)}
.compact-ui #play-video{right:max(16px,env(safe-area-inset-right));bottom:max(32px,calc(env(safe-area-inset-bottom) + 22px))}
.compact-ui.menu-open #play-video{display:none}
#video-dialog{width:820px;max-width:calc(100vw - 24px);max-height:calc(100dvh - 24px);padding:24px 18px 16px;overflow:auto}
#video-title{font-size:16px;margin:0 28px 12px}
#practice-video{display:block;width:100%;max-height:calc(100dvh - 120px);background:#000;border-radius:10px}
#video-error{margin:12px 0 0}

/* ブラウザー内で完結する参考採点。 */
#score-dialog{width:540px;max-width:calc(100vw - 24px);max-height:calc(100dvh - 24px);overflow:auto;padding:28px 24px 20px}
#score-title{margin:0 28px 6px;font-size:20px}
.score-summary{display:flex;align-items:center;justify-content:center;gap:14px;margin:8px 0 18px}
#score-total{display:block;font-size:36px;line-height:1;color:var(--accent)}
.score-metrics{display:grid;gap:12px;text-align:left;padding-top:20px}
.score-metrics label{display:grid;grid-template-columns:1fr auto;gap:5px;font-size:13px}
.score-metrics output{font-weight:600;color:var(--accent)}
.score-metrics progress{grid-column:1/-1;width:100%;height:8px;accent-color:var(--accent)}
#score-feedback{text-align:left;padding-left:20px;margin:20px 0 14px;font-size:13px;line-height:1.7}
#score-dialog .score-note{font-size:11px;line-height:1.7;text-align:left;margin:0;color:var(--muted)}
@media(orientation:landscape) and (max-height:500px){#score-dialog{width:640px;padding:16px 22px}#score-title{font-size:16px}.score-summary{margin:4px 0 10px}#score-total{font-size:26px}.score-metrics{grid-template-columns:repeat(3,1fr);gap:12px}.score-metrics label{font-size:11px}#score-feedback{margin:12px 0;font-size:12px}}

.score-pace{display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px;margin-top:16px;text-align:left;font-size:12px}
.score-pace strong{display:block;color:var(--accent);font-size:13px;margin-top:3px}
/* Keep the caption's source colors and rendering in sync with the practice image. */
#reference-frame>#reference,#paper-label{opacity:var(--reference-opacity,.25);filter:invert(1);mix-blend-mode:screen}
body.light #reference-frame>#reference,body.light #paper-label{filter:none;mix-blend-mode:multiply}
#paper-label .label-letter{color:var(--label-letter)}
#paper-label .label-name{color:var(--label-name)}

/* Japan: consultation after practice, separate from the scoring core. */
.score-consultation{padding:18px 0;margin:16px 0;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.score-consultation h3{font-size:16px;margin:0 0 8px}
#score-dialog .score-consultation p{margin:0 0 14px;line-height:1.7}
.score-consultation button{min-height:44px;max-width:100%;white-space:normal}
#custom-dialog{max-width:480px;max-height:calc(100dvh - 24px);overflow:auto}
#consult-design{text-align:left;margin-bottom:18px}
#custom-dialog #consult-design-name{margin:0 0 12px;color:var(--text);font-weight:600}
#consult-design label{display:block;font-size:12px;margin:8px 0;color:var(--muted)}
#consult-design textarea,#consult-design input{box-sizing:border-box;width:100%;font-family:inherit;font-size:16px;line-height:1.6;padding:10px;border:1px solid var(--border);border-radius:8px;background:var(--paper);color:var(--text);user-select:text;-webkit-user-select:text;resize:vertical}
.consult-copy{min-height:44px;width:100%;margin:8px 0;border:1px solid var(--border);border-radius:8px;background:var(--surface);color:var(--text);font-size:13px}
.consult-copy:hover{border-color:var(--accent)}
#custom-dialog .consult-instruction{font-size:12px;margin:4px 0 12px;line-height:1.7}
.practice-links{margin-top:12px;font-size:12px}
.practice-links summary{min-height:44px;display:list-item;align-content:center;cursor:pointer;color:var(--muted)}
#custom-dialog #consult-copy-status{font-size:12px;line-height:1.7;margin:0 0 12px;color:var(--accent)}
#consult-copy-status:empty{display:none}

#score-dialog #share-status{margin:8px 0 0;color:var(--accent)}#share-status:empty{display:none}


#custom-dialog:not(.has-design){max-width:370px}

#quick-tools #quick-score{gap:2px;padding:6px 8px}
#quick-score .quick-score-label{font-size:9px;line-height:1.2;font-weight:500}

/* Match the larger mobile labels without resizing the writing canvas. */
body.compact-ui{font-size:16px}
.compact-ui #menu-toggle{font-size:14px}
.compact-ui .toolbar>button{font-size:12px;min-width:44px}
.compact-ui .toolbar>.gold{font-size:14px;max-width:none;white-space:normal}
.compact-ui.menu-open .toolbar{flex-wrap:wrap}
.compact-ui .pen-panel{width:min(310px,calc(100vw - 32px));overflow:auto}
.compact-ui .pen-panel label{font-size:14px}
.compact-ui #categories label{font-size:14px}
.compact-ui #categories .letter-control{font-size:0}
.compact-ui #categories select{font-size:18px}
.compact-ui #paper-label{font-size:14px}
.compact-ui #play-video{font-size:14px}
.compact-ui .site-credit{font-size:12px}
.compact-ui #quick-score .quick-score-label{font-size:11px}
.compact-ui dialog{max-height:calc(100dvh - 24px);overflow:auto}
.compact-ui dialog h2,.compact-ui #score-title{font-size:22px}
.compact-ui dialog p,.compact-ui #custom-dialog .consult-description{font-size:15px;line-height:1.8}
.compact-ui .gold,.compact-ui .consult-links a,.compact-ui .consult-copy{font-size:16px}
.compact-ui #score-total{font-size:40px}
.compact-ui .score-metrics label,.compact-ui #score-feedback{font-size:15px}
.compact-ui .score-pace,.compact-ui #score-dialog .score-note,.compact-ui #consult-design label,.compact-ui .practice-links{font-size:14px}
.compact-ui .score-pace strong{font-size:15px}
.compact-ui #custom-dialog .consult-instruction,.compact-ui #custom-dialog #consult-copy-status{font-size:14px}
.compact-ui #toast{font-size:14px;max-width:calc(100vw - 32px);white-space:normal;text-align:center}
@media(max-width:760px),(pointer:coarse){
 .rotate-card h1{font-size:26px}
 .rotate-card p:not(.eyebrow){font-size:15px}
 .rotate-card .eyebrow{font-size:12px;letter-spacing:1px}
}

/* Readable mobile text without expanding icon or score-number line boxes. */
.compact-ui .toolbar>button,.compact-ui #menu-toggle,.compact-ui .gold,.compact-ui .consult-links a{line-height:1.5}
.compact-ui .pen-panel label,.compact-ui .score-metrics label,.compact-ui .score-pace{line-height:1.65}
.compact-ui dialog h2,.compact-ui #score-title{line-height:1.5}
.compact-ui dialog p,.compact-ui #score-feedback,.compact-ui #custom-dialog .consult-description{line-height:1.85}
.compact-ui #score-dialog .score-note,.compact-ui #custom-dialog .consult-instruction,.compact-ui #custom-dialog #consult-copy-status{line-height:1.8}
.compact-ui #quick-score .quick-score-label{line-height:1.35}