:root{--ink: #161616;--muted: #5E5A55;--sage: #2F6E62;--amber: #C87B36;--paper: #FFFFFF;--soft: #FAF7F2}*{box-sizing:border-box}html,body{margin:0;padding:0;background:var(--soft);color:var(--ink);font-family:Inter,system-ui,-apple-system,sans-serif;font-feature-settings:"ss01","cv11"}a{color:var(--sage);text-decoration:none}.tools{position:sticky;top:0;z-index:10;background:var(--ink);color:var(--paper);padding:12px 20px;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}.tools .lbl{font-size:13px;opacity:.8}.tools .actions{display:flex;gap:8px;flex-wrap:wrap}.tools button,.tools a.btn{background:var(--paper);color:var(--ink);border:0;padding:8px 14px;font:600 13px/1 Inter,system-ui,sans-serif;border-radius:8px;cursor:pointer;display:inline-flex;align-items:center;gap:6px;text-decoration:none}.tools button.alt,.tools a.btn.alt{background:transparent;color:var(--paper);border:1px solid rgba(255,255,255,.4)}.tools button:hover{background:#f0dcc1}.sheet{width:210mm;min-height:297mm;padding:18mm 16mm 14mm;margin:14px auto;background:var(--paper);box-shadow:0 1px 2px #0000000a,0 8px 28px -16px #0000002e;page-break-after:always;position:relative}.sheet:last-child{page-break-after:auto}.sheet header.cover-head{display:flex;align-items:center;justify-content:space-between;border-bottom:1.5px solid var(--ink);padding-bottom:8mm;margin-bottom:10mm}.brand{display:flex;align-items:center;gap:10px}.brand .logo{width:36px;height:36px;border-radius:10px;background:var(--ink);color:var(--paper);display:grid;place-items:center;font:800 16px/1 Inter,sans-serif}.brand .name{font:800 18px/1 Inter,sans-serif;letter-spacing:-.02em}.meta{font-size:11px;color:var(--muted);text-align:right}.cover h1{font:800 42pt/1 Inter,sans-serif;letter-spacing:-.04em;margin:14mm 0 6mm}.cover h1 em{font-family:"Instrument Serif",Georgia,serif;font-style:italic;font-weight:400;color:var(--sage)}.cover p{font-size:13pt;line-height:1.5;max-width:150mm;color:#2a2a2a}.cover .chips{margin-top:10mm;display:flex;gap:8px;flex-wrap:wrap}.chip{display:inline-block;padding:4px 10px;border:1px solid var(--ink);border-radius:999px;font-size:10pt}.cover .legend{margin-top:14mm;font-size:10pt;color:var(--muted)}.cover .legend strong{color:var(--ink)}.cover footer{position:absolute;left:16mm;right:16mm;bottom:12mm;display:flex;justify-content:space-between;font-size:9pt;color:var(--muted);border-top:1px solid #E8E1D7;padding-top:6mm}.puzzle-page header.ph{display:flex;justify-content:space-between;align-items:baseline;border-bottom:1px solid #E8E1D7;padding-bottom:4mm;margin-bottom:8mm}.puzzle-page h2{font:700 22pt/1 Inter,sans-serif;letter-spacing:-.02em;margin:0}.puzzle-page h2 .num{color:var(--sage)}.puzzle-page .ph .lvl{font-size:10pt;color:var(--muted);text-transform:uppercase;letter-spacing:2px}.board-wrap{display:flex;justify-content:center;padding:4mm 0}.board{border:2.4px solid var(--ink);display:grid;background:var(--paper)}.board.s9{grid-template-columns:repeat(9,16mm);grid-template-rows:repeat(9,16mm)}.board.s6{grid-template-columns:repeat(6,22mm);grid-template-rows:repeat(6,22mm)}.cell{border:.4px solid #B8B3AB;display:flex;align-items:center;justify-content:center;font:600 22pt/1 Inter,sans-serif;color:var(--ink)}.board.s9 .cell{font-size:18pt}.board.s6 .cell{font-size:26pt}.board.s9 .cell.br{border-right:1.6px solid var(--ink)}.board.s9 .cell.bb{border-bottom:1.6px solid var(--ink)}.board.s6 .cell.br{border-right:1.6px solid var(--ink)}.board.s6 .cell.bb{border-bottom:1.6px solid var(--ink)}.puzzle-page .notes{margin-top:8mm;font-size:10pt;color:var(--muted);display:flex;gap:18mm}.puzzle-page .notes div{flex:1;border-top:1px solid #E8E1D7;padding-top:4mm}.solutions-page h2{font:800 26pt/1 Inter,sans-serif;margin-bottom:8mm;letter-spacing:-.02em}.sol-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:8mm}.sol-card{border:1px solid #E8E1D7;padding:6mm;border-radius:4mm}.sol-card h3{font:700 11pt/1 Inter,sans-serif;margin:0 0 4mm;color:var(--sage)}.sol-board{display:grid;border:1.4px solid var(--ink)}.sol-board.s9{grid-template-columns:repeat(9,6.4mm);grid-template-rows:repeat(9,6.4mm)}.sol-board.s6{grid-template-columns:repeat(6,9mm);grid-template-rows:repeat(6,9mm)}.sol-board .cell{border:.3px solid #C8C2B8;font:600 8pt/1 Inter,sans-serif}.sol-board.s6 .cell{font-size:10pt}.sol-board .cell.br{border-right:1px solid var(--ink)}.sol-board .cell.bb{border-bottom:1px solid var(--ink)}.page-num{position:absolute;bottom:8mm;right:16mm;font-size:9pt;color:var(--muted)}.page-num .brand-mini{color:var(--ink);font-weight:700}@media print{@page{size:A4;margin:0}body{background:var(--paper)}.tools{display:none!important}.sheet{margin:0;box-shadow:none;width:210mm;min-height:297mm;height:297mm}}