:root{--blue:#20384b;--ink:#172733;--muted:#526270;--line:#dbe3e9;--paper:#fff;--bg:#f3f6f8;--accent:#165a82}
*{box-sizing:border-box}[hidden]{display:none!important}body{margin:0;background:var(--bg);color:var(--ink);font:1rem/1.5 system-ui,-apple-system,"DejaVu Sans",sans-serif}.wrap{max-width:1120px;margin:auto;padding:0 24px}header{background:var(--blue);color:white;padding:26px 0 24px}h1{font-size:2rem;margin:4px 0}header p{margin:5px 0}.eyebrow{font-size:.875rem;letter-spacing:.08em}main{padding-top:26px!important}nav{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:22px}button,input,select{font:inherit}button{cursor:pointer}nav button{background:white;border:1px solid var(--line);padding:10px 16px;border-radius:6px;color:var(--ink)}nav button[aria-pressed=true]{background:var(--blue);border-color:var(--blue);color:white}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #e6a82b;outline-offset:3px}.controls{display:flex;gap:18px;align-items:end}label{display:grid;gap:6px;font-weight:600}.controls label:first-child{flex:1}input,select{background:white;border:1px solid #9babb7;border-radius:5px;padding:10px 12px;color:var(--ink);min-width:0;width:100%}.sectionhead{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-top:24px}h2{margin:0;font-size:1.55rem}.sectionhead p{margin:4px 0;color:var(--muted)}a{color:var(--accent)}.notice{padding:12px 16px;background:#e7eef4;border-left:3px solid var(--blue);font-size:.9375rem;margin:20px 0}h3.group-title{font-size:1.125rem;margin:26px 0 10px}.meta{font-size:.875rem;color:var(--muted);margin:0;font-weight:400}.tag{display:inline-block;font-size:.8125rem;font-weight:600;color:#6b4b10;background:#fff1cf;padding:2px 6px;margin-left:5px;border-radius:3px}.empty{padding:28px;background:white;border:1px solid var(--line)}footer{color:var(--muted);font-size:.875rem;padding-top:25px!important;padding-bottom:24px!important}footer p{margin:7px 0}
.table-scroll{overflow-x:auto;border:1px solid var(--line);border-radius:5px;background:white}.difficulty-table{width:100%;min-width:850px;table-layout:fixed;border-collapse:collapse}.difficulty-table th,.difficulty-table td{border-bottom:1px solid var(--line)}.difficulty-table thead{background:#e7eef4}.difficulty-table .topic-column{width:36%;text-align:left;padding:12px 18px}.band{padding:9px 4px;font-size:.9375rem;border-left:1px solid #bdcbd5}.score-heading{padding:4px 0 9px;font-size:.875rem}.difficulty-table td{text-align:center;padding:13px 3px}.band-start{border-left:1px solid #bdcbd5}.topic-info{text-align:left;padding:15px 18px;font-weight:400}.topic-info h4,.mobile-card h4{font-size:1rem;margin:0 0 4px;font-weight:650}.difficulty-table tbody tr:last-child>*{border-bottom:0}.score{width:40px;min-height:42px;border:1px solid #b6c8d4;border-radius:4px;font-size:.9375rem;font-weight:600}.score.available{background:#edf4f9;color:var(--blue)}.score.available:hover{background:#d8e8f3;border-color:var(--accent)}.score.planned{background:#f4f6f7;color:#6d7881;border-color:#e2e7eb;cursor:default;font-weight:400}.mobile-cards{display:none}.preview{background:white;border:1px solid #b6c8d4;border-radius:5px;margin:24px 0;scroll-margin-top:16px;overflow:hidden}.preview-head{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:16px 18px}.preview-head h3{margin:0 0 4px;font-size:1.125rem}.preview-actions{display:flex;gap:9px;flex-shrink:0;flex-wrap:wrap}.download,.close{padding:9px 13px;border:1px solid #b6c8d4;border-radius:4px;font-size:.9375rem;color:var(--blue);text-decoration:none;background:#f8fbfd;font-weight:600;min-height:44px}.download:hover,.close:hover{background:#e7eef4}.preview iframe{display:block;border:0;border-top:1px solid var(--line);width:100%;height:70vh;min-height:480px;background:#eef1f4}.preview-help{margin:0;padding:10px 18px;font-size:.875rem;border-top:1px solid var(--line)}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
@media(max-width:860px){.table-scroll{display:none}.mobile-cards{display:grid;gap:12px}.mobile-card{background:white;border:1px solid var(--line);border-radius:5px;padding:16px}.mobile-band{margin-top:13px}.mobile-band h5{font-size:.875rem;font-weight:600;color:var(--muted);margin:0 0 6px}.mobile-scores{display:grid;gap:8px;grid-template-columns:repeat(3,minmax(0,1fr))}.mobile-scores.four{grid-template-columns:repeat(4,minmax(0,1fr))}.mobile-scores .score{width:100%;min-height:44px}.preview-head{align-items:start;flex-direction:column}.preview-actions{width:100%}.preview iframe{height:62vh;min-height:360px}}
@media(max-width:680px){.wrap{padding:0 16px}header{padding:19px 0}h1{font-size:1.7rem}.controls{display:grid;gap:12px}.sectionhead{display:block}.sectionhead>a{display:inline-block;margin-top:8px}nav{display:grid;grid-template-columns:repeat(2,minmax(0,1fr))}nav button{padding:9px 8px;min-height:44px}h3.group-title{margin-top:22px}.preview-head{padding:14px}.preview-help{padding:10px 14px}.preview-actions .download{flex:1;text-align:center}.notice{padding:11px 13px}}
@media print{header{background:white;color:black}.controls,nav,.notice,.preview{display:none}.table-scroll{display:block}.mobile-cards{display:none}.difficulty-table{min-width:0}body{background:white}}

.set-picker{padding:18px;background:white;border:1px solid #b6c8d4;border-radius:5px;margin:20px 0;scroll-margin-top:16px}.set-picker h3{font-size:1.125rem;margin:0 0 5px}.set-options{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:14px}.set-choice{min-height:48px;padding:10px;border:1px solid #b6c8d4;border-radius:4px;font-weight:600;background:#edf4f9;color:var(--blue)}.set-choice.planned{background:#f4f6f7;border-color:#e2e7eb;color:#6d7881;cursor:default}.set-choice.available:hover{background:#d8e8f3}@media(max-width:680px){.set-options{grid-template-columns:1fr;gap:8px}.set-picker{padding:14px}}
.set-guide{margin:20px 0;padding:18px;background:white;border:1px solid var(--line);border-radius:5px}.set-guide h3{margin:0;font-size:1.125rem}.set-guide>p{font-size:.9375rem;margin:8px 0 14px}.set-guide-cards{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.set-guide-cards li{display:flex;gap:10px;padding:13px;background:#eef3f7;border-radius:4px;align-items:start;min-width:0}.set-number{display:flex;align-items:center;justify-content:center;flex:0 0 28px;height:28px;border-radius:50%;background:var(--blue);color:white;font-weight:650}.set-guide-cards h4{font-size:.9375rem;margin:0 0 4px}.set-guide-cards p{font-size:.875rem;color:var(--muted);margin:0}.set-guide .set-guide-note{margin:14px 0 0;font-size:.875rem}.set-picker-hint{font-size:.875rem;color:var(--muted);margin:8px 0 0}.set-choice{display:flex;flex-direction:column;align-items:start;text-align:left;padding:14px;gap:5px;line-height:1.45}.set-choice-number{font-size:.8125rem;font-weight:500}.set-choice-title{font-size:1rem}.set-choice-description{font-size:.875rem;font-weight:400}.set-choice-action{font-size:.875rem;margin-top:auto;padding-top:9px;text-decoration:underline}.set-choice.planned .set-choice-action{text-decoration:none}@media(max-width:860px){.set-guide-cards{grid-template-columns:1fr;gap:8px}.set-options{grid-template-columns:1fr;gap:8px}.set-choice{padding:12px 14px}.set-choice-action{padding-top:4px}}@media(max-width:680px){.set-guide{padding:14px}.set-guide-cards li{padding:11px}}@media print{.set-guide,.set-picker{display:none}}

.set-guide-cards,.set-options{grid-template-columns:repeat(6,minmax(0,1fr))}.set-guide-cards li,.set-options .set-choice{grid-column:span 2}.set-guide-cards li:nth-child(n+4),.set-options .set-choice:nth-child(n+4){grid-column:span 3}.extension-note{font-size:.875rem;color:var(--muted);margin:12px 0 20px}.tag.next-grade{background:#e8eefb;color:#304c7c}@media(max-width:860px){.set-guide-cards,.set-options{grid-template-columns:1fr}.set-guide-cards li,.set-options .set-choice,.set-guide-cards li:nth-child(n+4),.set-options .set-choice:nth-child(n+4){grid-column:auto}}