:root{--background:#f4f5f5;--surface:#fff;--navy:#20364b;--muted:#586a7b;--line:#dce2e7;--orange:#f28b27;--orange-light:#fff1e3;--green:#187344;--green-light:#e9f5ed;--red:#a73536;--red-light:#fceeee;--radius:16px;--shadow:0 6px 24px #20364b06;font-family:Inter,"Segoe UI",Arial,sans-serif;color:var(--navy);background:var(--background);font-synthesis:none}
*{box-sizing:border-box}body{margin:0;font-size:16px;line-height:1.5}button,input,select{font:inherit}button,a,input,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer}a{color:var(--navy);text-underline-offset:3px}button:disabled{cursor:default}button:disabled:not(.answer-button){opacity:.45}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid var(--orange);outline-offset:3px}h1,h2,h3,p{margin:0}h1{font-size:clamp(24px,3vw,30px);line-height:1.23;letter-spacing:-.7px;font-weight:650;overflow-wrap:anywhere}h2{font-size:21px;line-height:1.3;font-weight:650;letter-spacing:-.35px}h3{font-size:15px;font-weight:650}p{color:var(--muted)}[hidden]{display:none!important}.sr-only{position:absolute;width:1px;height:1px;padding:0;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.site-header{height:86px;max-width:1120px;padding:16px 32px;margin:auto;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);gap:16px}.brand{display:flex;align-items:center;gap:12px;text-decoration:none;font-weight:700;font-size:22px;letter-spacing:-.6px}.brand img{border-radius:12px;object-fit:cover}.brand small{display:block;font-size:13px;font-weight:400;color:var(--muted);letter-spacing:0;line-height:1.1}.site-header>span{font-size:14px;color:var(--muted);text-align:right}main{max-width:1056px;padding:28px 32px 36px;margin:auto}.view{animation:appear .15s ease-out}@keyframes appear{from{opacity:.5}to{opacity:1}}.home{max-width:620px;margin:auto}.intro{text-align:center;margin:8px 0 26px}.intro h1{font-size:30px}.intro p{max-width:540px;margin:12px auto 0}.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}.selection-panel{padding:26px}.selection-panel>p{margin-top:5px}.package-options{margin:20px 0 10px;padding:0;border:0;min-width:0}.package-options>div{display:grid;gap:10px}.package-choice{min-height:66px;display:flex;align-items:center;gap:13px;border:1px solid var(--line);border-radius:11px;padding:12px 15px;cursor:pointer;background:#fcfcfc}.package-choice:has(:checked){border-color:var(--orange);background:var(--orange-light)}input[type=checkbox]{width:20px;height:20px;accent-color:#c36510;flex:none;cursor:pointer}.package-choice .package-name{font-weight:600;overflow-wrap:anywhere}.package-choice small{margin-left:auto;flex:none;color:var(--muted);font-size:13px}.button{min-height:44px;border:1px solid transparent;border-radius:9px;padding:10px 18px;display:inline-flex;align-items:center;justify-content:center;gap:10px;font-weight:600;font-size:14px;text-decoration:none;line-height:1.4}.primary{background:var(--navy);color:#fff}.primary:hover:not(:disabled){background:#304d67}.secondary{background:var(--surface);border-color:var(--line);color:var(--navy)}.secondary:hover:not(:disabled){background:#f0f3f5}.danger{background:var(--red);color:#fff}.danger:hover:not(:disabled){background:#892b2c}.wide{width:100%;margin-top:11px}.settings-link{display:block;text-align:center;margin-top:19px;font-size:14px}.home-footnote{text-align:center;font-size:12px;margin-top:19px}.hint{font-size:13px;color:var(--muted);line-height:1.5}.back-link{display:inline-flex;align-items:center;min-height:44px;font-size:14px;text-decoration:none;margin-top:-12px;margin-bottom:10px}.back-link:hover{text-decoration:underline}.page-heading{display:flex;align-items:center;justify-content:space-between;gap:18px;margin-bottom:22px}.page-heading p{margin-top:8px;max-width:720px}.toolbar{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:18px}.package-list{display:grid;gap:10px}.package-row{position:relative;display:flex;align-items:stretch;border:1px solid var(--line);border-radius:12px;background:var(--surface)}.package-open{flex:1;min-width:0;background:none;border:0;text-align:left;padding:17px 20px;color:var(--navy);border-radius:12px}.package-open:hover{background:#f9fafb}.package-open strong{font-size:16px;font-weight:600;overflow-wrap:anywhere;display:block}.package-open small{display:block;color:var(--muted);font-size:13px;margin-top:2px}.menu-toggle{width:48px;min-height:48px;margin:12px 10px;align-self:center;border:0;background:transparent;border-radius:8px;font-size:22px;color:var(--navy)}.menu-toggle:hover{background:var(--background)}.action-menu{position:absolute;right:12px;top:62px;z-index:5;min-width:260px;max-width:calc(100vw - 48px);background:#fff;border:1px solid var(--line);border-radius:12px;padding:6px;box-shadow:0 10px 28px #20364b20}.menu-item{display:flex;align-items:center}.menu-item>button:first-child{flex:1;min-height:44px;text-align:left;border:0;border-radius:7px;background:transparent;padding:9px 11px;font-size:14px;color:var(--navy)}.menu-item>button:hover{background:var(--background)}.menu-item .destructive{color:var(--red)!important}.local-notice{margin:24px 0 0;font-size:13px}.local-notice a{white-space:nowrap;margin-left:4px}.empty-state{text-align:center;padding:34px 20px;background:#fff;border:1px dashed #cbd5dd;border-radius:12px;grid-column:1/-1}.empty-state h2{font-size:18px}.empty-state p{font-size:14px;margin-top:7px}.empty-state .toolbar{justify-content:center;margin:18px 0 0}.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.card-tile{position:relative;min-width:0;overflow:hidden;background:#fff;border:1px solid var(--line);border-radius:12px}.card-tile:has(input:checked){border-color:var(--orange);box-shadow:0 0 0 1px var(--orange)}.card-thumbnail{height:150px;padding:18px;display:flex;align-items:center;justify-content:center;border-bottom:1px solid var(--line)}.card-thumbnail img{width:100%;height:100%;object-fit:contain}.card-content{padding:14px 16px}.card-solution{font-size:22px;letter-spacing:.3px;font-weight:650}.card-actions{display:flex;gap:8px;margin-top:12px}.card-actions .button{font-size:13px;padding:7px 12px;flex:1}.card-issue{font-size:12px;margin-top:7px;color:var(--muted)}.card-select{display:flex;gap:9px;align-items:center;min-height:44px;padding:7px 14px;background:var(--orange-light);font-size:13px}.bulk-toolbar{display:flex;flex-wrap:wrap;align-items:center;gap:10px;background:#eaf0f4;padding:12px;border-radius:11px;margin-bottom:18px}.bulk-toolbar>span{margin-right:auto;font-size:14px}.learning-view{max-width:850px;margin:auto}.learning-view .page-heading{margin-bottom:16px}.learning-view .page-heading p{font-size:14px;margin-top:5px}.learning-panel{overflow:hidden}.note-image{height:clamp(150px,25vh,235px);background:#fff;padding:18px;display:flex;align-items:center;justify-content:center;border-bottom:1px solid var(--line)}.note-image img{max-height:100%;max-width:100%;object-fit:contain}.answer-area{padding:20px 24px 18px}.answer-group{margin-bottom:14px}.answer-group h3{margin-bottom:7px;font-size:13px;color:var(--muted)}.choice-buttons,.note-buttons{display:grid;gap:8px}.choice-buttons{grid-auto-flow:column;grid-auto-columns:1fr}.note-buttons{grid-template-columns:repeat(7,minmax(0,1fr))}.answer-button{position:relative;min-height:44px;background:#f8fafb;border:1px solid #d4dde4;border-radius:9px;color:var(--navy);font-weight:600;font-size:15px;padding:9px 4px}.note-buttons .answer-button{height:62px;background:#fff;font-size:23px;box-shadow:0 3px 0 #e4e8eb}.answer-button:hover:not(:disabled){border-color:#8596a4}.answer-button.selected{background:var(--orange-light);border-color:#ce711a;box-shadow:0 0 0 1px #ce711a}.answer-button:disabled:not(.correct):not(.incorrect){opacity:.48}.answer-button.correct{background:var(--green-light);border-color:var(--green);box-shadow:0 0 0 1px var(--green);color:var(--green);opacity:1}.answer-button.incorrect{background:var(--red-light);border-color:var(--red);box-shadow:0 0 0 1px var(--red);color:var(--red);opacity:1}.answer-marker{font-size:12px;position:absolute;top:1px;right:4px;font-weight:800}.learning-bottom{min-height:52px;display:flex;align-items:center;justify-content:space-between;gap:15px;padding-top:2px}.learning-bottom>.button{min-width:116px;margin-left:auto}.feedback-title{font-size:23px;font-weight:700;line-height:1.2}.feedback-title.correct{color:var(--green)}.feedback-title.incorrect{color:var(--red)}.feedback-detail{font-size:13px;margin-top:3px;color:var(--muted)}.storage-explanation{padding:0 0 25px;border-bottom:1px solid var(--line);margin-bottom:25px}.storage-explanation h2{font-size:18px;margin-bottom:8px}.storage-explanation p{max-width:850px;font-size:14px}.settings-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.settings-panel{padding:25px;display:flex;flex-direction:column;align-items:flex-start}.settings-panel p{font-size:14px;margin:10px 0 22px}.settings-panel .button{margin-top:auto}.notice{padding:14px 18px;border:1px solid var(--line);background:#fff;border-radius:10px;margin-bottom:20px;font-size:14px}
dialog{color:var(--navy);width:calc(100% - 32px);max-width:540px;max-height:calc(100dvh - 32px);overflow-y:auto;border:1px solid var(--line);border-radius:18px;padding:26px;box-shadow:0 20px 70px #162b3f30}dialog::backdrop{background:#142a3d70;backdrop-filter:blur(3px)}dialog h2{margin-bottom:18px}dialog h3{margin-top:18px;margin-bottom:8px}dialog p{margin-bottom:12px;font-size:14px}dialog label:not(.check-label):not(.drop-zone){display:block;font-size:14px;font-weight:600;margin:15px 0 7px}input:not([type=checkbox]):not([type=file]):not([type=radio]),select{display:block;width:100%;min-height:46px;border:1px solid #bdcbd6;border-radius:8px;background:#fff;color:var(--navy);padding:10px 12px}input[type=file]{width:100%;font-size:13px;min-height:44px;color:var(--muted);padding-top:5px}input[type=file]::file-selector-button{min-height:36px;border:1px solid #bbc7d0;border-radius:7px;background:#fff;color:var(--navy);padding:6px 10px;margin-right:10px;font:inherit;cursor:pointer}.check-label{display:flex;align-items:center;gap:10px;min-height:44px;font-size:15px}.setting-line{display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid #edf0f2}.mandatory{font-size:14px;padding:10px 0}.mandatory span{display:block;color:var(--muted);font-size:12px}.info-button{width:44px;height:44px;flex:none;border:0;background:transparent;color:var(--muted);font-family:Georgia,serif;font-size:17px;border-radius:8px}.info-button:hover{background:#edf1f4}.dialog-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:20px;border-top:1px solid var(--line);padding-top:18px}.card-dialog{max-width:640px}.drop-zone{display:flex;flex-direction:column;gap:8px;border:1px dashed #aebdc9;border-radius:11px;background:#f8fafb;padding:16px;cursor:pointer;font-size:14px}.drop-zone.dragging{border-color:#ce711a;background:var(--orange-light)}.drop-zone:focus-within{outline:3px solid var(--orange);outline-offset:2px}.card-image-preview{height:110px;border:1px solid var(--line);border-radius:10px;padding:10px;margin-top:12px;background:white}.card-image-preview img{width:100%;height:100%;object-fit:contain}.card-dialog .answer-group h3{margin-top:10px}.card-dialog .note-buttons .answer-button{height:50px;font-size:21px}.card-dialog .answer-title{font-size:16px;margin-top:16px}.card-dialog .dialog-actions{margin-top:12px}.form-error{color:var(--red);font-size:13px;white-space:pre-line}.form-error:empty{display:none}.tooltip{position:fixed;z-index:100;max-width:min(300px,calc(100vw - 24px));padding:12px 14px;background:var(--navy);color:#fff;border-radius:9px;font-size:13px;line-height:1.5;box-shadow:0 7px 25px #12233426;pointer-events:none}.toast{position:fixed;bottom:22px;left:50%;transform:translateX(-50%);z-index:110;width:max-content;max-width:calc(100vw - 32px);background:var(--navy);color:#fff;border-radius:11px;box-shadow:0 8px 30px #20364b25;padding:13px 20px;font-size:14px;text-align:center}
@media(min-width:700px) and (max-height:820px){main{padding-top:20px}.site-header{height:76px}.learning-view .back-link{margin-bottom:2px}.learning-view .page-heading{margin-bottom:12px}.answer-area{padding:14px 22px}.answer-group{margin-bottom:10px}.note-image{height:160px}.learning-bottom{min-height:48px}.intro{margin-bottom:20px}.selection-panel{padding:22px}.card-dialog{padding:20px}.card-dialog .drop-zone{padding:12px}.card-dialog h2{margin-bottom:12px}}
@media(max-width:700px){.site-header{height:78px;padding:14px 20px}.brand{font-size:20px;gap:9px}.brand img{height:43px;width:43px}.site-header>span{font-size:12px;max-width:120px}main{padding:22px 18px 28px}.intro{text-align:left;margin:4px 0 20px}.intro h1{font-size:27px}.intro p{font-size:15px}.selection-panel{padding:21px}.package-choice{padding:12px 10px}.package-choice small{font-size:12px}.home-footnote{font-size:11px;padding:0 5px}.page-heading{margin-bottom:19px}.page-heading p{font-size:14px}.card-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.card-thumbnail{height:135px;padding:12px}.card-content{padding:12px}.card-actions{flex-direction:column;gap:6px}.card-solution{font-size:21px}.card-select{font-size:12px;padding:6px 8px}.settings-grid{grid-template-columns:1fr}.settings-panel{padding:22px}.answer-area{padding:18px 14px}.note-buttons{gap:6px;grid-template-columns:repeat(4,minmax(0,1fr))}.note-buttons .answer-button{height:54px;font-size:22px}.choice-buttons{gap:6px}.answer-button{font-size:14px}.note-image{height:180px;padding:14px}.learning-view .page-heading h1{font-size:26px}.learning-view .page-heading{margin-bottom:18px}.toolbar .button{flex-grow:1}.bulk-toolbar .button{font-size:12px;padding:8px 10px}.bulk-toolbar>span{width:100%}.local-notice{font-size:12px}.empty-state{padding:28px 16px}dialog{padding:20px;border-radius:14px}.dialog-actions{gap:8px}.dialog-actions .button{flex:1;padding:10px 12px}.card-dialog .note-buttons{grid-template-columns:repeat(4,minmax(0,1fr))}.tooltip{font-size:13px}.storage-explanation p{font-size:14px}}
@media(prefers-reduced-motion:reduce){.view{animation:none}}
.home-secondary{margin-top:18px;padding-top:14px;border-top:1px solid var(--line)}.home-secondary .wide{margin-top:0}.home-secondary .settings-link{margin-top:12px}
.order-setting{border:0;padding:0;margin:16px 0 8px;min-width:0}.order-setting legend{font-size:14px;font-weight:600;margin-bottom:8px}.segmented{display:grid;grid-template-columns:1fr 1fr;gap:4px;background:#edf0f2;border-radius:10px;padding:4px}.segmented label{position:relative;cursor:pointer;margin:0!important}.segmented input[type=radio]{position:absolute;opacity:0;width:1px;min-height:0;height:1px;padding:0}.segmented span{display:flex;align-items:center;justify-content:center;min-height:44px;border:1px solid transparent;border-radius:7px}.segmented input:checked+span{background:var(--orange-light);border-color:#c36510;color:#713805}.segmented input:focus-visible+span{outline:3px solid var(--orange);outline-offset:2px}.setting-line:has(:checked){border-bottom-color:#e6b889}.package-row.imported{border-color:#c36510;background:#fffaf5}
.drop-zone{cursor:default;align-items:flex-start;min-width:0}.upload-name{overflow-wrap:anywhere;max-width:100%}.upload-button{max-width:100%;font-size:13px}.drop-zone[data-state=valid]{border-style:solid;border-color:#c36510;background:#fffbf7}.drop-zone[data-state=invalid]{border-color:var(--red);background:var(--red-light)}.upload-status:empty{display:none}.upload-title{margin:0 0 7px}.import-summary:not(:empty){margin:14px 0}.import-summary{font-size:14px}.import-summary p{margin:3px 0 0}.import-success{color:var(--green);font-size:15px}
.note-image{padding:10px}.note-image img{width:100%;height:100%;object-fit:contain}
#enlarge-image{flex:none;font-size:12px;padding:8px 10px}.image-dialog{max-width:1200px}.image-dialog-heading{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px}.image-dialog-heading h2{margin:0}.image-dialog>img{display:block;width:100%;height:calc(100dvh - 170px);object-fit:contain}
@media(min-width:701px){.package-options{max-height:clamp(136px,22vh,235px);overflow-y:auto;padding:2px 4px 2px 2px}.package-options:focus-within{outline-offset:3px}}
@media(min-width:701px){main:has(.learning-view:not([hidden])){padding-bottom:10px}}
@media(min-width:701px) and (max-height:820px){main:has(.home:not([hidden])){padding-bottom:14px}.home .intro{margin-bottom:16px}.selection-panel{padding:20px}.home-footnote{margin-top:13px}}
@media(min-width:701px) and (max-height:820px){.home .package-options{max-height:20vh}}
@media(min-width:701px){#card-form{display:grid;grid-template-columns:minmax(0,1fr) 165px;column-gap:14px}#card-form>*{grid-column:1/-1}#card-form:has(#preview-box:not([hidden])) #image-drop{grid-column:1}#card-form #preview-box{grid-column:2;grid-row:3;height:auto;min-height:110px;margin-top:0}#card-form #preview-box img{min-height:100px}}

.view h1[tabindex="-1"]:focus{outline:none}

.pwa-notice{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px;padding:10px 14px;border:1px solid var(--line);border-radius:10px;background:var(--surface);font-size:13px;color:var(--muted)}.pwa-notice .button{flex:none;font-size:12px}@media(max-width:700px){.pwa-notice{flex-wrap:wrap}}