:root{--gp-ink: #3D3D3D;--gp-brown-900: #342421;--gp-brown-600: #6F5651;--gp-stone: #9E9590;--gp-cream: #FFF8F0;--gp-cream-warm: #FFF4F0;--gp-linen: #E8DDD0;--gp-blush: #F4DFDC;--gp-lilac-bright: #F0EDF5;--gp-primary-strong: #E67E22;--gp-primary-dark: #D35400;--gp-primary-soft: #F5D6A8;--gp-success: #27AE60;--gp-error: #E74C3C;--gp-info: #3498DB;--gp-badge-easy-bg: #D5F5E3;--gp-badge-hard-bg: #FADBD8;--gp-badge-daily-bg: #D6EAF8;--gp-dark-bg: #1A1410;--gp-dark-surface: #2A221C;--gp-dark-border: #4A3A2E;--gp-dark-border-2: #5A4A3A;--gp-dark-text: #F0E6D8;--gp-dark-ink: #0F0B08}[data-astro-cid-4s3ftx4m]{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;line-height:1.6;color:var(--gp-ink);max-width:800px;margin:0 auto;padding:1rem}h1[data-astro-cid-4s3ftx4m]{font-size:2rem;margin-bottom:.5rem}h2[data-astro-cid-4s3ftx4m]{font-size:1.4rem;margin:1.5rem 0 .5rem;color:var(--gp-primary-strong)}nav[data-astro-cid-4s3ftx4m].breadcrumb{margin-bottom:1rem;font-size:.9rem;color:var(--gp-brown-600)}nav[data-astro-cid-4s3ftx4m].breadcrumb a[data-astro-cid-4s3ftx4m]{color:var(--gp-primary-strong);text-decoration:none}ol[data-astro-cid-4s3ftx4m]{padding-left:1.5rem}li[data-astro-cid-4s3ftx4m]{margin-bottom:.5rem}#solver-section[data-astro-cid-4s3ftx4m]{background:var(--gp-cream);border-radius:12px;padding:1.5rem;margin:1.5rem 0}#grid-builder[data-astro-cid-4s3ftx4m]{display:flex;gap:1rem;flex-wrap:wrap;align-items:flex-start;margin:1rem 0}#grid-builder[data-astro-cid-4s3ftx4m] label[data-astro-cid-4s3ftx4m]{display:flex;align-items:center;gap:.5rem}#grid-builder[data-astro-cid-4s3ftx4m] select[data-astro-cid-4s3ftx4m],#grid-builder[data-astro-cid-4s3ftx4m] button[data-astro-cid-4s3ftx4m]{padding:.5rem 1rem;border-radius:6px;border:1px solid var(--gp-linen);font-size:1rem}#grid-builder[data-astro-cid-4s3ftx4m] button[data-astro-cid-4s3ftx4m]{background:var(--gp-primary-strong);color:#fff;border:none;cursor:pointer}#grid-builder[data-astro-cid-4s3ftx4m] button[data-astro-cid-4s3ftx4m]:hover{background:var(--gp-primary-dark)}#editor-board[data-astro-cid-4s3ftx4m]{display:inline-grid;gap:2px;background:var(--gp-brown-900);padding:2px;border-radius:4px;margin:1rem 0}#editor-board[data-astro-cid-4s3ftx4m] .cell[data-astro-cid-4s3ftx4m]{width:40px;height:40px;display:flex;align-items:center;justify-content:center;cursor:pointer;font-weight:700;font-size:1.1rem;user-select:none;transition:background .15s}#editor-board[data-astro-cid-4s3ftx4m] .cell[data-astro-cid-4s3ftx4m].white{background:var(--gp-primary-soft)}#editor-board[data-astro-cid-4s3ftx4m] .cell[data-astro-cid-4s3ftx4m].white:hover{background:var(--gp-linen)}#editor-board[data-astro-cid-4s3ftx4m] .cell[data-astro-cid-4s3ftx4m].black{background:var(--gp-brown-900);color:#fff}#editor-board[data-astro-cid-4s3ftx4m] .cell[data-astro-cid-4s3ftx4m].black-number{background:var(--gp-brown-900);color:var(--gp-primary-soft);font-size:1.2rem}#solve-btn[data-astro-cid-4s3ftx4m]{background:var(--gp-success);color:#fff;border:none;padding:.75rem 2rem;border-radius:8px;font-size:1.1rem;cursor:pointer;margin-top:1rem}#solve-btn[data-astro-cid-4s3ftx4m]:hover{background:var(--gp-success)}#solve-btn[data-astro-cid-4s3ftx4m]:disabled{background:var(--gp-stone);cursor:not-allowed}#solution-output[data-astro-cid-4s3ftx4m]{margin-top:1rem;padding:1rem;border-radius:8px;min-height:2rem}#solution-output[data-astro-cid-4s3ftx4m].success{background:var(--gp-badge-easy-bg);border:1px solid var(--gp-success)}#solution-output[data-astro-cid-4s3ftx4m].error{background:var(--gp-badge-hard-bg);border:1px solid var(--gp-error)}#solution-output[data-astro-cid-4s3ftx4m].info{background:var(--gp-badge-daily-bg);border:1px solid var(--gp-info)}.solution-board[data-astro-cid-4s3ftx4m]{display:inline-grid;gap:2px;background:var(--gp-ink);padding:2px;border-radius:4px;margin-top:.5rem}.solution-board[data-astro-cid-4s3ftx4m] .cell[data-astro-cid-4s3ftx4m]{width:36px;height:36px;display:flex;align-items:center;justify-content:center;font-size:1rem}.solution-board[data-astro-cid-4s3ftx4m] .cell[data-astro-cid-4s3ftx4m].white{background:var(--gp-primary-soft)}.solution-board[data-astro-cid-4s3ftx4m] .cell[data-astro-cid-4s3ftx4m].illuminated{background:var(--gp-cream-warm)}.solution-board[data-astro-cid-4s3ftx4m] .cell[data-astro-cid-4s3ftx4m].bulb{background:var(--gp-primary-soft)}.solution-board[data-astro-cid-4s3ftx4m] .cell[data-astro-cid-4s3ftx4m].bulb:after{content:"💡";font-size:1rem;line-height:1}.solution-board[data-astro-cid-4s3ftx4m] .cell[data-astro-cid-4s3ftx4m].black{background:var(--gp-ink);color:#fff}.mode-toggle[data-astro-cid-4s3ftx4m]{display:flex;gap:.5rem;margin:1rem 0}.mode-toggle[data-astro-cid-4s3ftx4m] button[data-astro-cid-4s3ftx4m]{padding:.4rem .8rem;border:2px solid var(--gp-primary-strong);background:#fff;color:var(--gp-primary-strong);border-radius:6px;cursor:pointer;font-size:.9rem}.mode-toggle[data-astro-cid-4s3ftx4m] button[data-astro-cid-4s3ftx4m].active{background:var(--gp-primary-strong);color:#fff}.instructions[data-astro-cid-4s3ftx4m]{font-size:.9rem;color:var(--gp-brown-600);margin:.5rem 0}@media(prefers-color-scheme:dark){body{background:var(--gp-dark-bg);color:var(--gp-dark-text)}#solver-section[data-astro-cid-4s3ftx4m]{background:var(--gp-dark-surface)}#editor-board[data-astro-cid-4s3ftx4m] .cell[data-astro-cid-4s3ftx4m].white{background:var(--gp-dark-border)}#editor-board[data-astro-cid-4s3ftx4m] .cell[data-astro-cid-4s3ftx4m].white:hover{background:var(--gp-dark-border-2)}#editor-board[data-astro-cid-4s3ftx4m] .cell[data-astro-cid-4s3ftx4m].black,#editor-board[data-astro-cid-4s3ftx4m] .cell[data-astro-cid-4s3ftx4m].black-number{background:var(--gp-dark-ink)}}.site-header[data-astro-cid-4s3ftx4m]{position:sticky;top:0;z-index:30;border-bottom:1px solid var(--gp-blush);background:#ffffffeb;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px)}.header-inner[data-astro-cid-4s3ftx4m]{max-width:80rem;margin:0 auto;display:flex;align-items:center;justify-content:space-between;height:4rem;padding:0 1rem}.brand[data-astro-cid-4s3ftx4m]{display:flex;align-items:center;gap:.75rem;text-decoration:none}.brand-logo[data-astro-cid-4s3ftx4m]{width:2.25rem;height:2.25rem;border-radius:.5rem;box-shadow:0 1px 3px #00000014;overflow:hidden}.brand-logo[data-astro-cid-4s3ftx4m] img[data-astro-cid-4s3ftx4m]{width:100%;height:100%;object-fit:cover}.brand-name[data-astro-cid-4s3ftx4m]{line-height:1.1}.brand-name[data-astro-cid-4s3ftx4m] .big[data-astro-cid-4s3ftx4m]{font-weight:900;color:var(--gp-brown-900);font-size:1.05rem;display:block}.brand-name[data-astro-cid-4s3ftx4m] .small[data-astro-cid-4s3ftx4m]{font-weight:600;color:var(--gp-brown-600);font-size:.75rem}.nav[data-astro-cid-4s3ftx4m]{display:flex;align-items:center;gap:.25rem}.nav[data-astro-cid-4s3ftx4m] a[data-astro-cid-4s3ftx4m]{border-radius:.375rem;padding:.5rem .75rem;font-size:.875rem;font-weight:700;color:var(--gp-brown-600);text-decoration:none}.nav[data-astro-cid-4s3ftx4m] a[data-astro-cid-4s3ftx4m]:hover{background:var(--gp-cream-warm);color:var(--gp-brown-900)}@media(max-width:640px){.header-inner[data-astro-cid-4s3ftx4m]{height:auto;flex-wrap:wrap;padding:.4rem .8rem}.nav[data-astro-cid-4s3ftx4m]{flex-wrap:wrap}.nav[data-astro-cid-4s3ftx4m] a[data-astro-cid-4s3ftx4m]{padding:.4rem .55rem;font-size:.8rem}}