:root{--bg:#ffffff;--ink1:#15171c;--ink2:#474c55;--ink3:#7a808a;--line:#e4e6ea;--tone:#f1f2f4;--tone2:#e2e4e8;--font-word:"Futura", "Jost", "Avenir Next", sans-serif;--font-body:"Noto Sans JP", "Hiragino Sans", "Hiragino Kaku Gothic ProN", sans-serif;--measure:46rem;--side:272px}@media(prefers-color-scheme:dark){:root{--bg:#101317;--ink1:#eceef2;--ink2:#b9bec7;--ink3:#858b95;--line:#272b31;--tone:#191d22;--tone2:#2a2f36;color-scheme:dark}}*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{margin:0;background:var(--bg);color:var(--ink1);font-family:var(--font-body);font-size:16px;line-height:1.9;-webkit-font-smoothing:antialiased}a{color:inherit}img{max-width:100%;height:auto;display:block}a:focus-visible,button:focus-visible,summary:focus-visible{outline:2px solid var(--ink1);outline-offset:3px}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}.layout{display:grid;grid-template-columns:var(--side)minmax(0,1fr);min-height:100vh;max-width:70rem;margin-inline:auto}.side{border-right:.5px solid var(--line);padding:32px 24px 36px;min-width:0;position:sticky;top:0;align-self:start;height:100vh;overflow-y:auto}.main{min-width:0;padding:36px clamp(20px,4vw,56px)0}.main>*{max-width:var(--measure)}.topbar{display:none;align-items:center;justify-content:space-between;padding:12px 18px;border-bottom:.5px solid var(--line);position:sticky;top:0;background:var(--bg);z-index:5}.burger{width:42px;height:42px;border:.5px solid var(--line);border-radius:10px;background:0 0;color:var(--ink1);display:grid;place-items:center;cursor:pointer;padding:0}.burger span,.burger span::before,.burger span::after{display:block;width:18px;height:1.5px;background:currentColor;border-radius:2px;content:""}.burger span{position:relative}.burger span::before{position:absolute;top:-6px}.burger span::after{position:absolute;top:6px}@media(max-width:820px){.layout{grid-template-columns:minmax(0,1fr);min-height:0}.topbar{display:flex}.side{display:none;position:static;height:auto;border-right:0;border-bottom:.5px solid var(--line);padding:14px 18px 22px}.side.open{display:block}.side .brand{display:none}.main{padding-top:26px}}.brand{display:block;text-decoration:none;margin-bottom:26px}.word{display:block;width:104px;aspect-ratio:933/246;background:var(--ink1);-webkit-mask:url(../wordmark.png)left center/contain no-repeat;mask:url(../wordmark.png)left center/contain no-repeat}.topbar .word{width:88px}.tag{font-size:12px;color:var(--ink3);line-height:1.7;margin-top:10px;display:block}.idx{font-size:14px;line-height:1.6}.idx>a,.idx summary{display:flex;justify-content:space-between;align-items:baseline;gap:8px;padding-block:10px;border-top:.5px solid var(--line);text-decoration:none;color:var(--ink1);cursor:pointer;list-style:none}.idx>a.cur{font-weight:500}.idx summary::-webkit-details-marker{display:none}.idx summary::after{content:"+";color:var(--ink3);font-family:var(--font-word);font-size:15px}.idx details[open]>summary::after{content:"–"}.idx .n{color:var(--ink3);font-size:12px;font-variant-numeric:tabular-nums;margin-left:6px}.idx ul{list-style:none;margin:0 0 10px;padding:0}.idx li>a{display:block;padding:5px 0 5px 12px;font-size:13px;color:var(--ink2);text-decoration:none;border-left:.5px solid var(--line)}.idx li>a:hover{color:var(--ink1)}.idx li>a.cur{color:var(--ink1);font-weight:500;border-left-color:var(--ink1)}.idx .empty{font-size:12px;color:var(--ink3);padding:4px 0 4px 12px}.idx #TableOfContents ol{list-style:none;margin:2px 0 6px;padding:0 0 0 24px;font-size:12px;line-height:1.9}.idx #TableOfContents a{color:var(--ink3);text-decoration:none}.idx #TableOfContents a:hover{color:var(--ink1)}.idx .store{margin-top:18px;border:.5px solid var(--ink3);border-radius:999px;padding:6px 14px;display:inline-block;font-size:13px;text-decoration:none}.cover{display:block;border-radius:10px;overflow:hidden;background:var(--tone);aspect-ratio:16/9}.cover img{width:100%;height:100%;object-fit:cover}.pagehead{margin-block-end:30px}.pagehead h1{font-size:clamp(24px,3.2vw,34px);line-height:1.4;margin:0 0 4px}.pagehead p{margin:0;color:var(--ink3);font-size:14px}.post{display:grid;gap:12px;padding-bottom:38px;margin-bottom:38px;border-bottom:.5px solid var(--line)}.post:last-of-type{border-bottom:0;margin-bottom:8px}.main>.post{margin-bottom:38px}.main>.post:last-of-type{margin-bottom:8px}.cat{font-size:11px;color:var(--ink3);letter-spacing:.1em}.post h2{font-size:clamp(22px,3vw,32px);line-height:1.45;letter-spacing:.01em;font-weight:700;margin:0;word-break:auto-phrase}.post h2 a{text-decoration:none}.post p{margin:0;color:var(--ink2);max-width:var(--measure);font-size:15px}.meta{font-size:11px;letter-spacing:.04em;color:var(--ink3);font-variant-numeric:tabular-nums}.steptitle{font-size:20px;font-weight:700;margin-block:34px 6px;padding-top:22px;border-top:.5px solid var(--line)}.rows{list-style:none;margin:0;padding:0}.rows li{border-top:.5px solid var(--line)}.rows li:first-child{border-top:0}.rows a{display:block;padding:14px 0;text-decoration:none}.rows b{display:block;font-weight:500;line-height:1.6}.rows span{display:block;font-size:13px;color:var(--ink3);line-height:1.7;margin-top:2px}.pager{display:flex;justify-content:space-between;gap:16px;font-size:14px;padding-block:8px 28px}.ft{border-top:.5px solid var(--line);padding-block:20px 36px;margin-block-start:10px;display:flex;gap:14px;flex-wrap:wrap;justify-content:space-between;font-size:12px;color:var(--ink3)}.ft a{text-decoration:none;margin-left:14px}.ft a:first-child{margin-left:0}.art{padding-bottom:40px}.art h1{font-size:clamp(26px,3.8vw,40px);line-height:1.4;letter-spacing:.01em;margin:10px 0 12px;font-weight:700;word-break:auto-phrase}.art .cover{margin-block:24px}.body h2{font-size:clamp(21px,2.4vw,26px);line-height:1.5;margin:52px 0 14px;padding-top:22px;border-top:.5px solid var(--line);font-weight:700;scroll-margin-top:72px}.body h3{font-size:19px;line-height:1.6;margin:30px 0 8px;font-weight:700}.body p{margin:0 0 1.4em}.body ul,.body ol{margin:0 0 1.4em;padding-left:1.4em}.body li{margin-bottom:.3em}.body a{text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:.5px}.body img{border-radius:10px;margin-inline:auto}.body figure{margin:30px 0}.body figcaption{font-size:12px;color:var(--ink3);margin-top:8px;line-height:1.7;text-align:center}.body blockquote{margin:0 0 1.4em;padding-left:16px;border-left:.5px solid var(--ink3);color:var(--ink2)}.body hr{border:0;border-top:.5px solid var(--line);margin:36px 0}.body code{font-size:.9em;background:var(--tone);padding:1px 5px;border-radius:4px}.body table{border-collapse:collapse;width:100%;font-size:14px;display:block;overflow-x:auto}.body th,.body td{border-bottom:.5px solid var(--line);padding:8px 10px;text-align:left}.close{border-top:.5px solid var(--line);margin-top:42px;padding-top:22px;color:var(--ink2);font-size:15px}.close p{margin:0 0 1em}.cta{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-top:24px;padding:18px 20px;background:var(--tone);border-radius:12px}.cta .t{font-size:14px;line-height:1.7;min-width:0;color:var(--ink1)}.cta .t .word{width:76px;margin-bottom:6px}.btn{display:inline-block;background:var(--ink1);color:var(--bg);text-decoration:none;font-size:13px;font-weight:500;padding:8px 18px;border-radius:999px}.rel{padding-bottom:12px}.rel h2{font-size:14px;color:var(--ink3);font-weight:500;margin:0 0 6px;padding-top:22px;border-top:.5px solid var(--line)}@media(prefers-reduced-motion:no-preference){html{scroll-behavior:smooth}}.close a{text-underline-offset:3px;text-decoration-thickness:.5px;overflow-wrap:anywhere}