:root{color-scheme:light;--paper: #ffffff;--canvas: #fafaf7;--surface-subtle: #f2f1ea;--sumizome-200: #e3e1d7;--sumizome-300: #cfccc0;--sumizome-500: #979489;--sumizome-600: #78766d;--sumizome-700: #5d5b55;--sumizome-800: #44433e;--sumizome-900: #2f2f2b;--sumizome-1000: #22221f;--ouryoku-50: #fafceb;--ouryoku-200: #e7ef90;--ouryoku-300: #d8e653;--ouryoku-500: #afc514;--ouryoku-600: #90a70d;--ouryoku-700: #718609;--ouryoku-900: #3c4a04;--ouryoku-1000: #2c3702;--success-surface: #edf6f0;--success-line: #3e7b59;--success-ink: #28543d;--error-surface: #fff0f0;--error-line: #bc3f48;--error-ink: #8a2731;--warning-surface: #fff7dc;--warning-line: #9a6800;--warning-ink: #6e4900;--radius: 8px;--card-shadow: 6px 6px 0 var(--sumizome-200)}*{box-sizing:border-box}[hidden]{display:none!important}html{background:var(--canvas);scroll-behavior:smooth}body{margin:0;background:var(--canvas);color:var(--sumizome-1000);font-family:Noto Sans JP,-apple-system,BlinkMacSystemFont,Segoe UI,Hiragino Sans,Yu Gothic UI,Yu Gothic,Meiryo,sans-serif;font-synthesis:none;font-size:1.0625rem;line-height:1.7}button,textarea{font:inherit}a{color:var(--ouryoku-900);text-underline-offset:.2em}a:hover{color:var(--ouryoku-1000)}:focus-visible{outline:3px solid var(--ouryoku-700);outline-offset:3px;box-shadow:0 0 0 2px var(--ouryoku-300)}.shell{width:min(1200px,calc(100% - 64px));margin-inline:auto}.app{min-height:100svh}.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.site-header{min-height:56px;color:var(--surface-subtle);background:var(--sumizome-900)}.site-header-inner{display:flex;align-items:center;min-height:56px}.brand{display:inline-flex;align-items:center;gap:8px;min-width:0;color:var(--surface-subtle);font-size:18px;font-weight:700;letter-spacing:.02em;line-height:1;text-decoration:none}.brand:hover{color:var(--paper)}.brand-mark{display:grid;flex:0 0 auto;width:40px;height:40px;place-items:center;border-radius:50%;background:var(--paper);color:var(--ouryoku-1000)}.brand-mark svg{display:block;width:24px;height:24px;fill:none;stroke:currentcolor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}.brand-text{white-space:nowrap}.intro{max-width:52rem;padding:2.75rem 0}h1,h2,h3,p{margin-top:0}h1{margin-bottom:1rem;font-size:clamp(2rem,4.5vw,3rem);line-height:1.2;letter-spacing:-.035em}h2{margin-bottom:0;font-size:clamp(1.5rem,3vw,1.875rem);line-height:1.4}h3{margin-bottom:.25rem;font-size:1.25rem;line-height:1.45}.lead{margin:0;color:var(--sumizome-700);font-size:clamp(1rem,1.8vw,1.125rem)}.lead+.lead{margin-top:.45rem}.card{padding:2rem;border:1px solid var(--sumizome-800);border-radius:var(--radius);background:var(--paper);box-shadow:var(--card-shadow)}.workspace,.results{margin-bottom:4.5rem}.section-heading,.subsection-heading{display:flex;justify-content:space-between;align-items:end;gap:1.25rem}.section-heading{margin-bottom:1.5rem}.section-note,.hint{color:var(--sumizome-700)}.section-note{margin-bottom:0;font-size:1rem}.workspace>.section-heading{align-items:center;margin:-2rem -2rem 1.5rem;padding:21px 24px;color:var(--surface-subtle);background:var(--sumizome-900);border-bottom:3px solid var(--ouryoku-500);border-radius:7px 7px 0 0}.workspace>.section-heading h2{color:var(--surface-subtle)}.workspace>.section-heading .section-note{color:var(--sumizome-300)}.panes{display:grid;gap:1rem;align-items:stretch}.pane{min-width:0}.pane-heading{display:flex;min-width:0;align-items:center;justify-content:space-between;gap:.75rem;margin-bottom:.5rem}.pane-label{display:block;min-width:0;font-size:1.0625rem;font-weight:700;overflow-wrap:anywhere}.textarea-wrap{overflow:hidden;border:1px solid var(--sumizome-600);border-radius:var(--radius);background:var(--paper)}.textarea-wrap:focus-within{border-color:var(--ouryoku-700);box-shadow:0 0 0 3px #d8e6538c}textarea{display:block;width:100%;min-height:13rem;resize:vertical;padding:1rem;border:0;background:transparent;color:var(--sumizome-1000);font-size:1.0625rem;line-height:1.85;overflow-wrap:anywhere;word-break:break-word}textarea::placeholder{color:var(--sumizome-600)}textarea:focus{outline:none}.field-actions{display:flex;flex:0 0 auto;gap:6px}.icon-button{display:grid;width:44px;height:44px;place-items:center;padding:0;border:1px solid var(--sumizome-600);border-radius:6px;background:var(--paper);color:var(--sumizome-900);cursor:pointer}.icon-button:hover{border-color:var(--ouryoku-700);background:var(--ouryoku-50);color:var(--ouryoku-1000)}.icon-button.is-complete{border-color:var(--ouryoku-700);background:var(--ouryoku-200)}.icon-button svg{width:21px;height:21px;fill:none;stroke:currentcolor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}.pane-foot{min-height:1.7rem;padding-top:.35rem}.hint{margin-bottom:0;font-size:.9375rem}.arrow{display:grid;place-items:center;color:var(--ouryoku-900);font-size:2rem;font-weight:700}.sample-area{display:flex;align-items:center;gap:1rem;margin-top:1.5rem;padding-top:1.25rem;border-top:1px solid var(--sumizome-300)}.sample-label{flex:0 0 auto;font-weight:700}.sample-buttons{display:flex;flex-wrap:wrap;gap:.625rem}.button{min-height:44px;border:1px solid var(--sumizome-600);border-radius:6px;padding:.45rem .9rem;background:var(--paper);color:var(--ouryoku-1000);cursor:pointer;font-size:.9375rem;font-weight:700;line-height:1.4}.button:hover{border-color:var(--ouryoku-700);background:var(--ouryoku-50)}.status{margin:1.25rem 0 0;color:var(--sumizome-700)}.status:empty{display:none}.status.error{padding:.8rem 1rem;border:1px solid var(--error-line);border-left-width:5px;border-radius:var(--radius);background:var(--error-surface);color:var(--error-ink)}.results>.section-heading{margin-bottom:1.75rem}.results>.section-heading{align-items:center;flex-direction:row;gap:.75rem}.results>.section-heading h2{min-width:0}.validation-legend{display:inline-flex;align-items:center;gap:.5rem;padding:.25rem .7rem;border:1px solid;border-radius:999px;font-size:.9375rem;font-weight:700;line-height:1.4;white-space:nowrap}.legend-mark,.state-mark{display:grid;width:1.15rem;height:1.15rem;flex:0 0 auto;place-items:center;font-size:1rem;font-style:normal;font-weight:900;line-height:1}.validation-legend.is-success,.block-state.is-success{border-color:var(--success-line);background:var(--success-surface);color:var(--success-ink)}.validation-legend.is-chain-invalid,.validation-legend.is-validation-failed,.block-state.is-chain-invalid,.block-state.is-validation-failed{border-color:var(--error-line);background:var(--error-surface);color:var(--error-ink)}.block-state.is-unverified{border-color:var(--warning-line);background:var(--warning-surface);color:var(--warning-ink)}.stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:.75rem;margin:0 0 1.75rem}.stat-card{min-width:0;padding:.9rem 1rem;border:1px solid var(--sumizome-300);border-radius:var(--radius);background:var(--surface-subtle)}.stat-card dt{color:var(--sumizome-700);font-size:.9375rem}.stat-card dd{margin:.1rem 0 0;font-size:1.1875rem;font-variant-numeric:tabular-nums;overflow-wrap:anywhere}.block{margin-top:1rem;padding:1rem;border:1px solid var(--sumizome-300);border-radius:var(--radius);background:var(--paper)}.block-header{display:flex;align-items:baseline;justify-content:space-between;gap:1rem;margin-bottom:.8rem}.block-index{font-weight:700}.block-state{display:inline-flex;align-items:center;gap:.35rem;padding:.22rem .6rem;border:1px solid;border-radius:999px;font-size:.875rem;font-weight:700;line-height:1.4;white-space:nowrap}.block-grid{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));grid-auto-rows:1fr;gap:.35rem}.word-cell{display:flex;min-width:0;min-height:3.5rem;flex-direction:column;justify-content:center;align-items:center;padding:.3rem .15rem;border:1px solid var(--sumizome-300);border-radius:4px;background:var(--surface-subtle);text-align:center}.word-cell-number{color:var(--sumizome-700);font-size:.75rem;line-height:1}.word-cell-word{max-width:100%;margin-top:.3rem;color:var(--sumizome-1000);font-size:clamp(.8125rem,1.5vw,.95rem);line-height:1.2;overflow-wrap:anywhere;word-break:break-all}.word-cell.is-empty{border-style:dashed;background:transparent}.word-cell.is-error{border-color:var(--error-line);background:var(--error-surface);box-shadow:inset 0 0 0 1px var(--error-line)}.word-cell.is-error .word-cell-number,.word-cell.is-error .word-cell-word{color:var(--error-ink)}.block-binary{display:flex;flex-direction:column;gap:.35rem;align-items:stretch;margin-top:.85rem;padding-top:.75rem;border-top:1px solid var(--sumizome-300);color:var(--sumizome-700);font-size:.875rem}.block-binary code{min-width:0;color:var(--ouryoku-900);font-family:ui-monospace,SFMono-Regular,Consolas,monospace;line-height:1.6;overflow-wrap:anywhere;word-break:break-all}.app-footer{border-top:4px solid var(--ouryoku-500);background:var(--sumizome-1000);color:var(--sumizome-300);font-size:.875rem;line-height:1.7}.app-footer-inner{padding-top:36px}.app-footer-main{display:grid;grid-template-columns:minmax(0,2fr) minmax(180px,.7fr) minmax(180px,.9fr);gap:48px}.app-footer-label{display:block;margin-bottom:14px;color:var(--sumizome-500);font-size:11px;font-weight:700;line-height:1.4;letter-spacing:.14em}.app-footer-product-name{display:block;color:var(--surface-subtle);font-size:17px;line-height:1.5}.app-footer-product-item+.app-footer-product-item{margin-top:16px}.app-footer-product p{max-width:34rem;margin:6px 0 0}.app-footer-section{display:flex;align-items:flex-start;flex-direction:column;gap:8px}.app-footer-credit-note{margin:0 0 6px;color:var(--sumizome-300)}.app-footer-link{display:inline-flex;align-items:flex-start;gap:7px;color:var(--ouryoku-200);font-weight:400;line-height:1.7}.app-footer-link:hover{color:var(--ouryoku-300)}.external-link-icon{flex:0 0 auto;width:16px;height:16px;margin-top:4px;fill:none;stroke:currentcolor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}.app-footer-bottom{display:flex;align-items:center;justify-content:space-between;margin-top:32px;padding:14px 0 18px;border-top:1px solid var(--sumizome-800);color:var(--sumizome-500);font-size:12px}.app-footer-company-logo{display:block;width:140px;height:auto}@media(min-width:48rem){.panes{grid-template-columns:minmax(0,1fr) auto minmax(0,1fr)}.arrow{padding-inline:.35rem}}@media(max-width:56rem){.stats{grid-template-columns:repeat(2,minmax(0,1fr))}.app-footer-main{grid-template-columns:minmax(0,1.5fr) repeat(2,minmax(150px,1fr));gap:28px}}@media(max-width:44rem){.shell{width:100%;padding-inline:16px}.site-header-inner{padding-inline:12px}.intro{padding:3rem 16px 2.25rem}.card{margin-inline:16px;padding:1.25rem}.workspace,.results{margin-bottom:3.5rem}.section-heading,.subsection-heading{align-items:start;flex-direction:column}.workspace>.section-heading{align-items:flex-start;margin:-1.25rem -1.25rem 1.5rem}.results>.section-heading{align-items:center;flex-direction:row}.arrow{min-height:2.5rem;transform:rotate(90deg)}.sample-area{align-items:flex-start;flex-direction:column}.block{padding:.75rem}.block-grid{gap:.2rem}.word-cell{min-height:3rem}.app-footer-inner{padding:32px 16px 0}.app-footer-main{grid-template-columns:1fr;gap:28px}.app-footer-section{padding-top:20px;border-top:1px solid var(--sumizome-800)}.app-footer-bottom{margin-top:28px}.app-footer-company-logo{width:128px}}@media(max-width:700px){.brand{font-size:16px}}@media(max-width:25rem){.stats{grid-template-columns:1fr}.card{margin-inline:10px;padding:1rem}.intro{padding-inline:10px}.workspace>.section-heading{margin:-1rem -1rem 1.5rem}.results>.section-heading{gap:.4rem}.results>.section-heading h2{font-size:1.25rem;line-height:1.3;white-space:nowrap}.results>.section-heading .validation-legend{gap:.35rem;padding:.2rem .4rem;font-size:.8125rem}.results>.section-heading .legend-mark{width:1rem;height:1rem;font-size:.875rem}.block-grid{gap:2px}.word-cell{min-height:2.75rem}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}