:root{--kh-bg: #0c0f13;--kh-surface: #12161c;--kh-surface-dim: #1a202a;--kh-ink: #d7dbe2;--kh-ink-2: #9aa3ae;--kh-ink-3: #626c78;--kh-line: #222a34;--kh-line-strong: #39434f;--kh-accent: #f0a84b;--kh-accent-strong: #ffc069;--kh-accent-soft: #2a2113;--kh-deficit: #ff6f61;--kh-surplus: #48c98a;--kh-deficit-soft: #2e1715;--kh-surplus-soft: #12261c;--kh-heat-1: #191913;--kh-heat-2: #241f11;--kh-heat-3: #32280f;--kh-heat-4: #44320e;--kh-heat-5: #593c0d;--kh-sans: "IBM Plex Sans JP", sans-serif;--kh-mono: "IBM Plex Mono", monospace;--kh-radius: 0px;--kh-measure: 42em;--kh-focus: 0 0 0 2px var(--kh-bg), 0 0 0 4px var(--kh-accent);color-scheme:dark}:root[data-theme=light]{--kh-bg: #e9ebee;--kh-surface: #f7f8fa;--kh-surface-dim: #dde2e8;--kh-ink: #15181c;--kh-ink-2: #454d57;--kh-ink-3: #6e7681;--kh-line: #cdd3da;--kh-line-strong: #98a2ad;--kh-accent: #8a5800;--kh-accent-strong: #5f3d00;--kh-accent-soft: #f1e5cc;--kh-deficit: #b3261e;--kh-surplus: #17693f;--kh-deficit-soft: #f7e3e1;--kh-surplus-soft: #ddefe5;--kh-heat-1: #f6eeda;--kh-heat-2: #f0ddb6;--kh-heat-3: #e8ca8d;--kh-heat-4: #dcb565;--kh-heat-5: #cf9c3c;color-scheme:light}@media(prefers-color-scheme:light){:root:not([data-theme=dark]){--kh-bg: #e9ebee;--kh-surface: #f7f8fa;--kh-surface-dim: #dde2e8;--kh-ink: #15181c;--kh-ink-2: #454d57;--kh-ink-3: #6e7681;--kh-line: #cdd3da;--kh-line-strong: #98a2ad;--kh-accent: #8a5800;--kh-accent-strong: #5f3d00;--kh-accent-soft: #f1e5cc;--kh-deficit: #b3261e;--kh-surplus: #17693f;--kh-deficit-soft: #f7e3e1;--kh-surplus-soft: #ddefe5;--kh-heat-1: #f6eeda;--kh-heat-2: #f0ddb6;--kh-heat-3: #e8ca8d;--kh-heat-4: #dcb565;--kh-heat-5: #cf9c3c;color-scheme:light}}*,*:before,*:after{box-sizing:border-box}html,body{margin:0;height:100%}body{background:var(--kh-bg);color:var(--kh-ink);font-family:var(--kh-sans);font-size:14px;line-height:1.75;-webkit-font-smoothing:antialiased}#app{display:flex;flex-direction:column;min-height:100dvh}#app main{flex:1 0 auto}img,svg{display:block;max-width:100%}button{cursor:pointer;font-family:inherit}.wrap{max-width:1200px;margin:0 auto;padding-inline:24px}.wrap.wrap-wide{max-width:1480px}@media(max-width:640px){.wrap{padding-inline:12px}}a{color:var(--kh-accent);text-decoration:none}a:hover{color:var(--kh-accent-strong);text-decoration:underline;text-underline-offset:3px}:focus-visible{outline:none;box-shadow:var(--kh-focus)}::selection{background:var(--kh-accent-soft);color:var(--kh-ink)}.kh-h1{font-family:var(--kh-mono);font-weight:600;font-size:clamp(24px,3.4vw,34px);line-height:1.4;letter-spacing:.06em;margin:0 0 8px}.kh-h2{font-family:var(--kh-mono);font-weight:600;font-size:16px;letter-spacing:.1em;line-height:1.5;margin:56px 0 16px}.kh-h2:before{content:"■ ";color:var(--kh-accent)}.kh-h3{font-family:var(--kh-mono);font-weight:600;font-size:14px;letter-spacing:.04em;line-height:1.6;margin:32px 0 12px;padding-left:10px;border-left:2px solid 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