.number-v35{--number-soft:var(--accent-soft,#edf3e8);--number-line:var(--line,#dce6d7);color:var(--ink);min-width:0}.number-v35 [hidden]{display:none!important}.number-heading{display:flex;align-items:center;gap:14px;margin:4px 0 24px}.number-heading h1{font-size:29px;margin:0 0 5px}.number-heading p{margin:0;color:var(--muted);font-size:13px}.number-heading-icon{width:55px;height:55px;border-radius:17px;background:var(--number-soft);display:grid;place-items:center;flex:none}.number-heading-icon .icon{width:31px;height:31px}.number-heading>.btn{margin-left:auto;font-size:12px;padding:10px}.number-workspace{display:grid;grid-template-columns:190px minmax(0,1fr) 240px;gap:18px;align-items:start}.number-v35 .card{border-radius:18px}.number-sidebar{padding:14px;position:sticky;top:110px}.number-sidebar h2{font-size:13px;color:var(--muted);margin:3px 0 15px;padding:0 4px}.number-tiers{display:grid;gap:6px}.number-tiers button{display:flex;gap:9px;align-items:center;border:0;background:transparent;color:var(--muted);border-radius:11px;min-height:43px;padding:9px 8px;text-align:left}.number-tiers button>b{font-size:11px;width:22px;height:22px;display:grid;place-items:center;border-radius:7px;background:var(--number-soft);color:var(--accent-dark)}.number-tiers button>span{font-size:12px;flex:1}.number-tiers button>small{font-size:9px;white-space:nowrap}.number-tiers .active{background:var(--number-soft);color:var(--accent-dark);font-weight:650}.number-tiers .active>b{background:var(--accent);color:var(--on-accent,#fff)}.number-library{min-width:0}.number-overview{display:flex;align-items:center;justify-content:space-between;padding:22px 23px;margin-bottom:16px;background:linear-gradient(120deg,var(--surface,#fff),var(--number-soft));gap:15px}.number-eyebrow{display:block;font-size:10px;letter-spacing:2px;color:var(--muted);margin-bottom:8px}.number-overview h2{font-size:24px;margin:0 0 8px}.number-overview p{font-size:12px;margin:0;color:var(--muted)}.number-total{text-align:right;flex:none}.number-total>strong{font-size:31px;color:var(--accent-dark);display:block;line-height:1.3}.number-total small{font-size:14px;color:var(--muted);font-weight:400}.number-total>span{display:block;font-size:11px;color:var(--muted);margin-top:6px}.number-level-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.number-level{padding:17px 18px;min-width:0;transition:border-color .15s}.number-level.current{border-color:var(--accent);background:var(--number-soft)}.number-level-top{display:flex;align-items:center;justify-content:space-between;gap:10px}.number-level-number{position:relative;width:38px;height:38px;border-radius:12px;display:grid;place-items:center;background:var(--number-soft);color:var(--accent-dark);font-size:14px;font-weight:700;font-variant-numeric:tabular-nums}.number-level.current .number-level-number,.number-level.passed .number-level-number{background:var(--accent);color:var(--on-accent,#fff)}.number-level-number sup{position:absolute;top:-5px;right:-5px;font-size:10px;line-height:1;display:grid;place-items:center;width:15px;height:15px;border-radius:5px;background:#fff0b8;color:#987124;border:1px solid #e7ca77;box-shadow:0 0 0 2px var(--surface,#fff);font-family:Georgia,serif}.number-stars{display:inline-flex;gap:2px;color:#b49339;white-space:nowrap}.number-stars .icon{width:15px;height:15px}.number-stars .empty{opacity:.26;filter:grayscale(1)}.number-level h3{font-size:16px;margin:13px 0 6px;letter-spacing:.2px}.number-level>p{font-size:11px;color:var(--muted);margin:0 0 14px}.number-level .btn{font-size:11px;min-height:37px;padding:9px 8px;gap:7px}.number-level .btn .icon{width:16px;height:16px}.number-parent-note{display:flex;align-items:center;gap:8px;color:var(--muted);font-size:11px;margin:16px 2px;line-height:1.8}.number-parent-note .icon{width:16px;height:16px;flex:none}.number-next{padding:24px 20px;text-align:center}.number-next>span{font-size:12px;color:var(--muted)}.number-next h2{font-size:21px;margin:12px 0 8px}.number-next>p{font-size:12px;color:var(--muted);margin:0 0 20px}.number-next>.btn{font-size:12px}.number-next>small{display:flex;align-items:center;justify-content:center;gap:4px;margin-top:15px;font-size:10px;color:var(--muted)}.number-next .point-icon{width:17px;height:17px}.number-next-art{position:relative;width:105px;height:104px;margin:25px auto 20px;background:var(--number-soft);border-radius:36% 55% 40% 45%;display:grid;place-items:center}.number-next-art>.icon{width:68px;height:68px}.number-next-art i{display:grid;place-items:center;position:absolute;background:#fff5ca;border-radius:9px;font-style:normal;font-size:14px;font-weight:700;color:#8e7637;width:25px;height:25px;transform:rotate(-12deg);top:-7px;left:-8px}.number-next-art i:nth-of-type(2){background:#e5ecfc;color:#5775a6;left:auto;right:-10px;top:35px;transform:rotate(12deg)}.number-next-art i:nth-of-type(3){background:#f7e5e9;color:#b37e8c;top:auto;bottom:-8px;left:3px;transform:rotate(-7deg)}.number-play-types{padding:18px;margin-top:16px;display:grid;gap:15px}.number-play-types>span{display:flex;align-items:center;gap:11px;font-size:12px;color:var(--muted)}.number-play-types .icon{width:22px;height:22px}.number-status{text-align:center;padding:55px 25px}.number-status h2{font-size:18px;margin:16px 0}.number-status p{font-size:13px;color:var(--muted)}.number-question-shell,.number-result-shell{max-width:760px;margin:0 auto}.number-question-heading{display:flex;align-items:center;gap:15px;margin:4px 0 20px}.number-question-heading h1{font-size:24px;margin:0}.number-question-heading>span{margin-left:auto;font-size:12px;color:var(--muted)}.number-question-heading>.icon-button{width:38px;height:38px;background:var(--number-soft);border-radius:12px}.number-question-meta{display:flex;align-items:center;justify-content:space-between;font-size:12px;color:var(--muted)}.number-question-meta>b{color:var(--accent-dark);font-variant-numeric:tabular-nums}.number-progress{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin:13px 0 23px}.number-progress>i{height:5px;background:var(--number-line);border-radius:4px}.number-progress>i.active{background:var(--accent)}.number-question-card{padding:28px 30px}.number-type{display:inline-flex;align-items:center;gap:6px;font-size:11px;background:var(--number-soft);color:var(--accent-dark);padding:6px 9px;border-radius:7px}.number-type .icon{width:17px;height:17px}.number-question-card>h2{font-size:21px;line-height:1.75;margin:18px 0 25px;white-space:pre-line;overflow-wrap:anywhere}.number-sequence{display:flex;gap:9px;align-items:center;flex-wrap:wrap;margin:20px 0 27px}.number-sequence>span{font-size:24px;min-width:48px;padding:14px 11px;line-height:1.3;display:grid;place-items:center;background:var(--number-soft);border:1px solid var(--number-line);border-radius:13px;font-weight:650}.number-sequence>i{display:grid;place-items:center;color:var(--muted)}.number-sequence>i .icon{width:15px;height:15px}.number-sequence>.missing,.number-pattern-grid>.missing{background:#fff4cb;border-color:#e7d29a;color:#967129}.number-answer-field{margin-top:26px}.number-answer-field>span{font-size:12px}.number-answer-field input{font-size:24px;letter-spacing:2px;text-align:center;min-height:54px;font-variant-numeric:tabular-nums;font-weight:600}.number-answer-field small{font-size:10px;color:var(--muted);line-height:1.7}.number-rule-hint{font-size:12px;line-height:1.8;color:var(--muted);display:flex;gap:7px;align-items:flex-start;white-space:pre-line}.number-rule-hint .icon{width:17px;height:17px;flex:none;margin-top:1px}.number-code-clues{max-width:460px;margin:0 auto 22px}.number-code-clues>div{display:grid;grid-template-columns:minmax(0,1fr) 76px 100px;align-items:center;gap:12px;padding:10px 0;border-bottom:1px solid var(--number-line)}.number-code-clues .number-code-labels{padding-top:0;border:0;align-items:end}.number-code-labels small{font-size:10px;color:var(--muted);text-align:center;line-height:1.7}.number-code-clues strong{display:flex;gap:7px}.number-code-clues i{font-size:22px;font-weight:650;font-style:normal;display:grid;place-items:center;min-width:34px;min-height:41px;background:var(--number-soft);border-radius:8px;font-variant-numeric:tabular-nums}.number-code-clues b{text-align:center;font-size:17px;color:var(--accent-dark)}.number-equations{max-width:430px;margin:0 auto 24px}.number-equations>p{display:flex;gap:16px;align-items:center;justify-content:center;flex-wrap:wrap;font-size:25px;line-height:1.6;font-variant-numeric:tabular-nums;padding:13px 8px;background:var(--number-soft);border-radius:12px;letter-spacing:1px}.number-equations p span{color:var(--muted)}.number-equations p.number-equation-target{border:1px dashed var(--accent);background:transparent}.number-equations b{color:var(--accent-dark)}.number-pattern-grid{display:grid;grid-template-columns:repeat(var(--number-columns),1fr);gap:9px;max-width:330px;margin:15px auto 28px}.number-pattern-grid>span{display:grid;place-items:center;min-height:60px;aspect-ratio:1.25;background:var(--number-soft);border:1px solid var(--number-line);border-radius:10px;font-size:24px;font-weight:650;font-variant-numeric:tabular-nums}.number-sudoku{display:grid;grid-template-columns:repeat(var(--number-size),minmax(0,1fr));max-width:450px;margin:0 auto;border:2px solid var(--accent-dark);border-radius:11px;overflow:hidden;background:var(--number-line);gap:0}.number-cell{width:100%;min-width:0;min-height:0;aspect-ratio:1;display:grid;place-items:center;border:0;border-right:1px solid var(--number-line);border-bottom:1px solid var(--number-line);border-radius:0;background:var(--surface,#fff);color:var(--accent-dark);font-size:clamp(17px,2.2vw,27px);font-weight:600;padding:0;box-shadow:none!important;font-variant-numeric:tabular-nums}.number-cell.given{background:var(--number-soft);color:var(--ink);font-weight:750;opacity:1}.number-cell.selected{background:#fff1bb;box-shadow:inset 0 0 0 2px #c99d43!important}.number-cell.conflict{background:#fce9e5;color:#ac5246}.number-cell.box-left{border-left:2px solid var(--accent-dark)}.number-cell.box-top{border-top:2px solid var(--accent-dark)}.number-cell:focus-visible{outline:2px solid var(--accent);outline-offset:-4px}.number-sudoku.readonly .number-cell{opacity:1;color:var(--accent-dark)}.number-pad{display:flex;align-items:center;justify-content:center;gap:8px;margin:18px auto;max-width:450px}.number-pad button{flex:1;max-width:42px;aspect-ratio:1;min-width:0;background:var(--number-soft);color:var(--accent-dark);border:1px solid var(--number-line);border-radius:10px;font-size:18px;font-weight:650;padding:0}.number-grid-tools{display:flex;justify-content:center;gap:17px}.number-grid-tools .btn{font-size:11px;min-height:34px;padding:7px 9px}.number-grid-tools .icon{width:16px;height:16px}.number-question-note{font-size:10px;color:var(--muted);margin:14px 2px}.number-question-actions{display:flex;gap:12px;justify-content:space-between;margin-top:18px}.number-question-actions>.btn{flex:1;min-height:46px;font-size:13px}.number-question-actions .icon{width:18px;height:18px}.number-reward-note{display:flex;align-items:center;justify-content:center;font-size:10px;gap:6px;color:var(--muted);margin:20px 0}.number-reward-note .point-icon{width:20px;height:20px}.number-feedback{display:flex;align-items:center;gap:8px;padding:13px 16px;border-radius:12px;font-size:13px;background:var(--number-soft);color:var(--accent-dark);margin:0 0 17px}.number-feedback.incorrect{background:#fff5df;color:#997a42}.number-feedback .icon{width:21px;height:21px}.number-analysis{padding:26px}.number-analysis>h2{font-size:13px;color:var(--muted);margin:0 0 20px}.number-answer-value{display:block;font-size:40px;line-height:1.5;font-variant-numeric:tabular-nums;color:var(--accent-dark);text-align:center;letter-spacing:3px;margin:12px 0 25px;overflow-wrap:anywhere}.number-analysis section{margin-top:23px;border-top:1px solid var(--number-line);padding-top:20px}.number-analysis h3{display:flex;align-items:center;gap:8px;font-size:15px;margin:0 0 11px}.number-analysis h3 .icon{width:20px;height:20px}.number-analysis p{font-size:14px;color:var(--muted);line-height:1.95;white-space:pre-line;overflow-wrap:anywhere}.number-result{padding:32px;text-align:center}.number-result-icon{width:76px;height:76px;background:var(--number-soft);display:grid;place-items:center;border-radius:24px;margin:0 auto 20px}.number-result-icon .icon{width:45px;height:45px}.number-result h1{font-size:28px;margin:0 0 15px}.number-result .number-stars .icon{width:30px;height:30px}.number-result>p{font-size:13px;color:var(--muted);margin:18px 0}.number-result-score{display:flex;align-items:center;justify-content:center;gap:20px;border-top:1px solid var(--number-line);border-bottom:1px solid var(--number-line);padding:22px;margin:25px 0;font-size:13px;color:var(--muted)}.number-result-score>strong{display:flex;align-items:center;gap:7px;font-size:32px;color:var(--accent-dark)}.number-result-score .point-icon{width:33px;height:33px}.number-result .btn{min-width:180px}.number-result-review{padding:26px;margin-top:18px}.number-result-review>h2{font-size:19px;margin:0 0 20px}.number-result-review>article{padding-top:20px;margin-top:20px;border-top:1px solid var(--number-line)}.number-review-correct{display:flex;align-items:center;gap:6px;font-size:11px;color:var(--accent-dark)}.number-review-correct .icon{width:16px;height:16px}.number-result-review h3{font-size:14px;line-height:1.8;white-space:pre-line}.number-result-review p{font-size:13px;line-height:1.85;color:var(--muted);white-space:pre-line}.number-result-review small{font-size:11px;line-height:1.8;display:block;color:var(--muted);overflow-wrap:anywhere}.number-rules p{font-size:14px;line-height:1.9}.has-page-back .number-question-heading>[data-number-leave]{display:none}
@media(min-width:1500px){.number-workspace{grid-template-columns:210px minmax(0,1fr) 260px}.number-level-list{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(max-width:1180px){.number-workspace{grid-template-columns:180px minmax(0,1fr)}.number-aside{display:none}}
@media(max-width:760px){.number-heading{gap:10px;margin:3px 0 18px}.number-heading-icon{width:43px;height:43px;border-radius:13px}.number-heading-icon .icon{width:26px;height:26px}.number-heading h1{font-size:24px}.number-heading p{font-size:11px}.number-heading>.btn{min-height:34px;padding:7px}.number-heading>.btn>span{display:none}.number-workspace{display:block}.number-sidebar{position:static;border:0!important;background:none!important;border-radius:0!important;box-shadow:none!important;padding:0;margin:0 0 15px}.number-sidebar h2{display:none}.number-tiers{display:flex;overflow-x:auto;gap:7px;padding:2px 1px 7px;scrollbar-width:thin;scrollbar-color:var(--number-line) transparent}.number-tiers button{flex:none;min-width:110px;padding:9px 11px;border:1px solid var(--number-line);background:var(--surface,#fff);min-height:43px;gap:7px}.number-tiers button>span{font-size:11px}.number-tiers button>b{font-size:10px;width:21px;height:21px}.number-tiers button>small{display:none}.number-overview{padding:16px 17px;margin-bottom:12px;gap:10px}.number-overview h2{font-size:20px;margin-bottom:7px}.number-eyebrow{font-size:9px;margin-bottom:6px}.number-overview p{font-size:10px}.number-total>strong{font-size:26px}.number-total small{font-size:12px}.number-total>span{font-size:10px}.number-level-list{gap:10px;grid-template-columns:repeat(2,minmax(0,1fr))}.number-level{padding:13px 12px;border-radius:14px!important}.number-level-number{width:32px;height:33px;font-size:12px;border-radius:10px}.number-level-top{gap:5px}.number-stars{gap:0}.number-stars .icon{width:12px;height:12px}.number-level h3{font-size:13px;margin:12px 0 5px}.number-level>p{font-size:10px;margin-bottom:12px}.number-level .btn{font-size:10px;padding:8px 5px;min-height:34px;gap:4px}.number-level .btn .icon{width:14px;height:14px}.number-level-number sup{width:14px;height:14px;font-size:9px;top:-5px;right:-4px}.number-parent-note{font-size:10px;align-items:flex-start}.number-status{padding:35px 18px}.number-status h2{font-size:17px}.number-question-heading{gap:8px;margin:3px 0 16px}.number-question-heading h1{font-size:19px}.number-question-heading>span{font-size:10px}.number-question-meta{font-size:11px}.number-progress{gap:6px;margin:12px 0 18px}.number-question-card{padding:20px 18px;border-radius:16px!important}.number-type{font-size:10px;padding:5px 7px}.number-type .icon{width:15px;height:15px}.number-question-card>h2{font-size:17px;line-height:1.8;margin:16px 0 21px}.number-sequence{gap:6px;margin:17px 0 23px}.number-sequence>span{font-size:20px;min-width:39px;padding:12px 8px;border-radius:11px}.number-sequence>i .icon{width:12px;height:12px}.number-answer-field{margin-top:20px}.number-answer-field input{font-size:23px;min-height:51px}.number-answer-field>span{font-size:11px}.number-rule-hint{font-size:10px;margin:14px 0;line-height:1.9}.number-code-clues>div{grid-template-columns:minmax(0,1fr) 49px 64px;gap:8px;padding:10px 0}.number-code-labels small{font-size:9px}.number-code-clues strong{gap:4px}.number-code-clues i{min-width:26px;min-height:34px;font-size:18px;border-radius:7px}.number-code-clues b{font-size:15px}.number-equations>p{font-size:21px;gap:11px;padding:11px 6px}.number-pattern-grid{max-width:270px;gap:7px;margin-bottom:23px}.number-pattern-grid>span{font-size:22px;min-height:55px;border-radius:9px}.number-sudoku{border-radius:9px}.number-cell{font-size:clamp(16px,5vw,25px)}.number-pad{gap:5px;margin:15px 0}.number-pad button{border-radius:8px;font-size:16px;max-width:43px}.number-grid-tools{gap:13px}.number-grid-tools .btn{font-size:10px}.number-question-note{font-size:9px;margin:12px 1px}.number-question-actions{gap:10px;margin-top:15px}.number-question-actions>.btn{font-size:12px;min-height:43px;padding:10px}.number-question-actions .icon{width:16px;height:16px}.number-reward-note{font-size:9px;margin:17px 0}.number-reward-note .point-icon{width:17px;height:17px}.number-feedback{padding:11px 12px;font-size:11px;gap:7px;margin-bottom:14px}.number-feedback .icon{width:18px;height:18px}.number-analysis{padding:20px 18px}.number-analysis>h2{font-size:11px;margin-bottom:18px}.number-answer-value{font-size:34px;margin-bottom:19px}.number-analysis section{margin-top:18px;padding-top:16px}.number-analysis h3{font-size:13px;margin-bottom:9px}.number-analysis h3 .icon{width:18px;height:18px}.number-analysis p{font-size:12px;line-height:1.95}.number-result{padding:26px 20px}.number-result h1{font-size:25px}.number-result-icon{width:65px;height:65px;border-radius:21px;margin-bottom:18px}.number-result-icon .icon{width:39px;height:39px}.number-result-score{padding:17px;margin:20px 0}.number-result-review{padding:20px 18px}.number-result-review>h2{font-size:17px}.number-result-review h3{font-size:12px}.number-result-review p{font-size:12px}.number-result-review small{font-size:10px}}
@media(max-width:350px){.number-heading-icon{display:none}.number-heading h1{font-size:23px}.number-overview{padding:15px 12px}.number-overview h2{font-size:18px}.number-overview p{font-size:9px}.number-total>strong{font-size:23px}.number-level{padding:12px 10px}.number-level .btn{font-size:9px;gap:2px}.number-level .btn .icon{width:12px;height:12px}.number-level .number-stars .icon{width:10px;height:10px}.number-question-card{padding:19px 14px}.number-question-card>h2{font-size:16px}.number-code-clues>div{grid-template-columns:minmax(0,1fr) 43px 57px;gap:6px}.number-code-clues strong{gap:3px}.number-code-clues i{min-width:22px;min-height:31px;font-size:16px}.number-code-labels small{font-size:8px}.number-cell{font-size:17px}.number-grid-tools .btn{padding:6px 7px}}

/* Password clues use complete sentences instead of two bare count columns. */
.number-code-clues{max-width:660px;margin:22px auto 27px}
.number-code-clues>div{grid-template-columns:var(--code-width,75px) minmax(0,1fr);gap:26px}
.number-code-clues .number-code-labels{grid-template-columns:var(--code-width,75px) minmax(0,1fr);gap:26px;padding:0 0 11px}
.number-code-labels>small{text-align:left;font-size:11px;color:var(--muted)}
.number-code-row>p{margin:0;font-size:14px;font-weight:500;line-height:1.85;color:var(--ink);overflow-wrap:anywhere}
.number-code-clues strong{align-self:center}
@media(max-width:760px){.number-code-clues{margin:18px 0 22px}.number-code-clues>div{grid-template-columns:var(--code-mobile-width,58px) minmax(0,1fr);gap:15px;padding:13px 0}.number-code-clues .number-code-labels{gap:15px;padding-bottom:7px;grid-template-columns:var(--code-mobile-width,58px) minmax(0,1fr)}.number-code-labels>small{font-size:10px}.number-code-row>p{font-size:13px;line-height:1.85}.number-code-clues i{min-width:27px;min-height:35px;font-size:20px}}
@media(max-width:350px){.number-code-clues>div,.number-code-clues .number-code-labels{gap:11px;grid-template-columns:var(--code-small-width,49px) minmax(0,1fr)}.number-code-row>p{font-size:12px}.number-code-clues i{min-width:23px;min-height:32px;font-size:17px}}

/* Editable password positions precede the numbered clues. One native input
   retains phone keyboards, paste and deletion without converting to a number. */
.number-code-answer{text-align:center;margin:24px 0 30px}.number-code-answer>label{display:block;font-size:12px;color:var(--muted);margin-bottom:12px}.number-code-entry{display:inline-block;position:relative;max-width:100%;cursor:text}.number-code-slots{display:flex;gap:12px}.number-code-slots>span{width:60px;height:64px;display:grid;place-items:center;border:1.5px solid var(--number-line);border-radius:12px;background:var(--surface,#fff);font-size:29px;font-weight:650;font-variant-numeric:tabular-nums;color:var(--accent-dark)}.number-code-slots>span.active{border-color:var(--accent);box-shadow:0 0 0 3px var(--number-soft)}.number-code-slots>span.filled{background:var(--number-soft)}.number-code-entry>.number-code-native{position:absolute;inset:0;width:100%;height:100%;min-height:0;max-width:none;margin:0;padding:0;opacity:0;cursor:text;border:0;font-size:24px}.number-code-answer>small{display:block;font-size:10px;color:var(--muted);margin-top:12px}.number-code-clues>div,.number-code-clues .number-code-labels{grid-template-columns:24px var(--code-width,75px) minmax(0,1fr);gap:17px}.number-code-labels>small:first-child{grid-column:1 / span 2}.number-code-labels>small:last-child{grid-column:3}.number-code-index{display:grid;place-items:center;width:23px;height:23px;border:1px solid var(--number-line);background:var(--surface,#fff);border-radius:50%;font-size:11px;font-weight:600;color:var(--muted);align-self:center}
@media(max-width:760px){.number-code-answer{margin:21px 0 25px}.number-code-answer>label{font-size:11px;margin-bottom:10px}.number-code-slots{gap:10px}.number-code-slots>span{width:53px;height:57px;font-size:26px;border-radius:10px}.number-code-answer>small{font-size:9px;line-height:1.7;margin-top:9px}.number-code-clues>div,.number-code-clues .number-code-labels{grid-template-columns:19px var(--code-mobile-width,58px) minmax(0,1fr);gap:11px}.number-code-index{width:19px;height:19px;font-size:9px}.number-code-row>p{font-size:13px}}
@media(max-width:350px){.number-code-slots{gap:8px}.number-code-slots>span{width:47px;height:52px;font-size:24px}.number-code-clues>div,.number-code-clues .number-code-labels{grid-template-columns:17px var(--code-small-width,49px) minmax(0,1fr);gap:9px}.number-code-index{width:17px;height:17px;font-size:8px}.number-code-row>p{font-size:12px}}
/* Early levels use pictures and direct numeric choices before symbolic puzzles. */
.number-count-board{display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:14px 18px;max-width:490px;margin:28px auto 32px;padding:17px 12px;border-radius:17px;background:var(--number-soft)}.number-count-object{display:block;width:70px;height:70px;flex:none}.number-compare-board{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px;max-width:460px;margin:30px auto 16px}.number-compare-option{position:relative;display:flex;min-height:132px;padding:23px 18px;align-items:center;justify-content:center;border:1.5px solid var(--number-line);border-radius:18px;background:var(--surface,#fff);color:var(--accent-dark);transition:border-color .15s,background .15s}.number-compare-option>strong{font-size:54px;font-weight:650;font-variant-numeric:tabular-nums}.number-compare-option>span{position:absolute;right:11px;top:11px;display:grid;place-items:center;width:22px;height:22px;border:1.5px solid var(--number-line);border-radius:50%;background:var(--surface,#fff)}.number-compare-option>span .icon{width:16px;height:16px}.number-compare-option.selected{background:var(--number-soft);border-color:var(--accent);box-shadow:0 0 0 3px var(--number-soft)}.number-compare-option.selected>span{background:var(--accent);border-color:var(--accent);color:var(--on-accent,#fff)}.number-arithmetic-board{display:flex;align-items:center;justify-content:center;gap:14px;max-width:530px;margin:29px auto 33px}.number-arithmetic-board>span{display:grid;place-items:center;flex:1;min-height:88px;min-width:0;border:1px solid var(--number-line);border-radius:15px;background:var(--number-soft);font-size:36px;font-weight:650;font-variant-numeric:tabular-nums;color:var(--accent-dark)}.number-arithmetic-board>i{font-style:normal;font-size:27px;color:var(--muted);flex:none}.number-arithmetic-board>.missing{border-style:dashed;background:var(--surface,#fff);color:var(--muted)}
@media(max-width:760px){.number-count-board{gap:11px 13px;max-width:310px;margin:23px auto 25px;padding:15px 9px;border-radius:14px}.number-count-object{width:49px;height:49px}.number-compare-board{gap:14px;margin:24px auto 14px}.number-compare-option{min-height:115px;padding:18px 16px;border-radius:15px}.number-compare-option>strong{font-size:47px}.number-compare-option>span{width:20px;height:20px;top:9px;right:9px}.number-compare-option>span .icon{width:14px;height:14px}.number-arithmetic-board{gap:10px;margin:25px auto 28px}.number-arithmetic-board>span{min-height:69px;border-radius:12px;font-size:30px}.number-arithmetic-board>i{font-size:22px}}
@media(max-width:350px){.number-count-board{gap:9px 10px;padding:13px 7px}.number-count-object{width:45px;height:45px}.number-compare-board{gap:11px}.number-compare-option{min-height:102px}.number-compare-option>strong{font-size:41px}.number-arithmetic-board{gap:7px}.number-arithmetic-board>span{min-height:61px;font-size:26px}.number-arithmetic-board>i{font-size:20px}}
/* Password constraints stay compact above the digit boxes; the full prompt
   remains available to assistive technology without repeating a long block. */
.number-code-meta{display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:9px 14px;margin:4px 0 19px;color:var(--muted);font-size:13px}.number-code-meta>span{display:inline-flex;align-items:center;gap:4px;padding:7px 10px;border-radius:8px;background:var(--number-soft);white-space:nowrap}.number-code-meta b{font-weight:650;color:var(--accent-dark)}.number-code-meta+.number-code-answer{margin-top:18px;margin-bottom:23px}
@media(max-width:760px){.number-code-meta{gap:7px;margin:2px 0 16px;font-size:11px}.number-code-meta>span{padding:7px 8px;border-radius:7px;gap:3px}.number-code-meta+.number-code-answer{margin-top:16px;margin-bottom:20px}}
@media(max-width:350px){.number-code-meta{font-size:10px;gap:5px}.number-code-meta>span{padding:6px 7px}}

/* v38: denser shared challenge-card rhythm. */
.number-level-list{grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.number-level{display:flex;flex-direction:column;min-width:0;min-height:140px;padding:13px 14px;border-radius:15px}.number-level-top{display:flex;align-items:center;justify-content:space-between;min-height:24px;gap:7px}.number-level .number-level-number{display:block;position:static;width:auto;height:auto;min-width:0;background:none!important;color:var(--ink)!important;font-size:15px;font-weight:700;line-height:1.5;margin:0;border-radius:0;white-space:nowrap}.number-card-flags{display:flex;align-items:center;gap:5px;flex:none}.number-card-flags>sup{display:grid;place-items:center;width:15px;height:15px;font:700 10px Georgia,serif;line-height:1;background:#fff0b8;color:#987124;border:1px solid #e7ca77;border-radius:5px}.number-card-done{color:var(--accent-dark);display:flex}.number-card-done .icon{width:17px;height:17px}.number-level>.number-stars{margin:10px 0 11px;min-height:17px}.number-level>.number-stars .icon{width:16px;height:16px}.number-level>.btn{min-height:40px;font-size:11px;padding:8px 6px;gap:5px;margin-top:auto}.number-level>.btn .icon{width:15px;height:15px}@media(min-width:1680px){.number-level-list{grid-template-columns:repeat(4,minmax(0,1fr))}}@media(max-width:1100px) and (min-width:761px){.number-level-list{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:760px){.number-level-list{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.number-level{min-height:133px;padding:11px 12px}.number-level .number-level-number{font-size:14px}.number-level>.btn{min-height:40px;font-size:11px}.number-level>.number-stars{margin:9px 0 10px}}@media(max-width:350px){.number-level{padding:10px}.number-level .number-level-number{font-size:13px}.number-card-flags{gap:3px}.number-level>.btn{font-size:10px}}

.number-twentyfour-board{margin-top:24px}.number-twentyfour-digits{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin:0 auto 22px;max-width:440px}.number-twentyfour-digits button{font-size:30px;min-height:67px;border:1px solid var(--number-line);border-radius:14px;background:var(--number-soft);color:var(--accent-dark);font-weight:700}.number-expression-field input{font-size:23px;font-variant-numeric:tabular-nums;letter-spacing:1px}.number-expression-keys{display:flex;flex-wrap:wrap;gap:7px;margin-top:10px}.number-expression-keys button{border:1px solid var(--number-line);border-radius:9px;background:var(--surface);color:var(--accent-dark);min-width:42px;min-height:42px;font-size:20px;padding:6px 9px}.number-expression-keys button:last-child{font-size:12px;margin-left:auto}.number-all-solutions{border-top:1px solid var(--number-line);margin-top:20px;padding-top:16px;text-align:left}.number-all-solutions summary{font-size:13px;color:var(--accent-dark);cursor:pointer;font-weight:600;line-height:1.6}.number-all-solutions ol{padding-left:23px;margin:14px 0 0}.number-all-solutions li{padding:9px 0;border-bottom:1px solid var(--number-line);font-size:14px;overflow-wrap:anywhere}.number-all-solutions li strong{font-variant-numeric:tabular-nums;color:var(--ink)}.number-all-solutions li p{font-size:12px;margin:7px 0 3px}.number-result-review .number-all-solutions{margin-top:13px;padding-top:12px}@media(max-width:760px){.number-twentyfour-digits{gap:8px}.number-twentyfour-digits button{font-size:25px;min-height:55px;border-radius:12px}.number-expression-field input{font-size:20px}.number-expression-keys{gap:5px}.number-expression-keys button{min-width:37px;min-height:40px;font-size:18px;padding:6px 7px}.number-expression-keys button:last-child{font-size:11px}.number-all-solutions summary{font-size:12px}.number-all-solutions li{font-size:13px}}

/* Parent preview: static question and answer cards, never a challenge form. */
.number-preview{max-width:960px;margin:0 auto;overflow-wrap:anywhere}
.number-preview>.number-heading{justify-content:space-between;align-items:center;gap:12px}
.number-preview>.number-heading h1{margin:0;font-size:25px}
.number-preview-question{padding:22px;margin:0 0 16px}
.number-preview-question>h2{font-size:20px;line-height:1.9;margin:18px 0;white-space:pre-line}
.number-preview-options{list-style:none;padding:0;margin:16px 0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
.number-preview-options>li{display:flex;align-items:center;gap:10px;padding:12px;border:1px solid var(--line,#dfe6d8);border-radius:12px;line-height:1.8;min-width:0}
.number-preview-options>li>span{color:var(--muted,#76816f);font-size:12px;flex:none}
.number-preview-answer{margin-top:20px;padding:17px;border:1px solid var(--line,#dfe6d8);border-radius:14px;background:var(--sage,#f6f8f1)}
.number-preview-answer h3{font-size:13px;margin:16px 0 8px}
.number-preview-answer h3:first-child{margin-top:0}
.number-preview-answer>strong{display:block;font-size:22px;font-weight:600;line-height:1.6}
.number-preview-answer p{line-height:1.9;white-space:pre-line;margin:0}
@media(max-width:600px){.number-preview-question{padding:16px;margin-bottom:12px}.number-preview-question>h2{font-size:18px;margin:14px 0}.number-preview-options{grid-template-columns:1fr;gap:8px}.number-preview-answer{padding:14px}.number-preview>.number-heading h1{font-size:21px}}

.number-preview-digits{display:flex;flex-wrap:wrap;gap:10px;margin:18px 0}.number-preview-digits span{display:grid;place-items:center;min-width:50px;min-height:54px;padding:8px;background:var(--sage,#f3f5ed);border:1px solid var(--line,#dfe6d8);border-radius:12px;font-size:24px}.number-preview .number-code-row{grid-template-columns:26px minmax(70px,auto) minmax(0,1fr)}.number-preview .number-sudoku{max-width:480px;margin:18px auto}.number-preview-answer .number-sudoku{background:transparent}