:root{--paper:#f2efe6;--ink:#171714;--muted:#706d63;--accent:#d84b24;--line:#1f1f1b;--panel:#e7e2d5;--white:#fffdf6;--notes-ink:#173c2a;--notes-line:#d9dfd5;--cream:#fbf7ef;--max:1180px}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:96px}
body{margin:0;color:var(--ink);background:var(--paper);font-family:"Noto Sans JP","Yu Gothic","Hiragino Kaku Gothic ProN",system-ui,sans-serif;-webkit-font-smoothing:antialiased;line-height:1.75}
a{color:inherit}
img{max-width:100%;display:block}
::selection{background:var(--accent);color:var(--white)}
.site-shell{width:min(calc(100% - 32px),var(--max));margin:auto}
.topbar{position:sticky;top:0;z-index:50;border-bottom:1px solid var(--line);background:rgba(242,239,230,.94);backdrop-filter:blur(10px)}
.topbar-inner{min-height:72px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;row-gap:10px;padding-block:10px}
.brand{display:flex;align-items:center;gap:14px;text-decoration:none}
.brand-mark{width:42px;height:42px;border:2px solid var(--line);display:grid;place-items:center;font-weight:900;position:relative;background:var(--accent);color:white;box-shadow:5px 5px 0 var(--line)}
.brand-copy strong{display:block;font-size:1rem;letter-spacing:.08em}
.brand-copy span{display:block;color:var(--muted);font:700 .66rem/1.2 ui-monospace,SFMono-Regular,Menlo,monospace;letter-spacing:.12em;text-transform:uppercase}
.nav{display:flex;margin-left:auto;align-items:center;gap:24px;font-size:.85rem;font-weight:700}
.nav a{text-decoration:none;border-bottom:1px solid transparent}
.nav a:hover{border-color:var(--accent)}
.nav-cta{padding:10px 15px;border:1px solid var(--line)!important;background:var(--ink);color:white;box-shadow:4px 4px 0 var(--accent)}
footer{border-top:1px solid var(--line);padding:28px 0 42px}
.footer-inner{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap;font:700 .68rem/1.6 ui-monospace,SFMono-Regular,Menlo,monospace;text-transform:uppercase;color:var(--muted)}
.footer-privacy{color:inherit}
.copy-unit{display:inline-block;white-space:nowrap}
.footer-works-label{font:800 .68rem/1.5 ui-monospace,SFMono-Regular,Menlo,monospace;letter-spacing:.12em;color:var(--accent)}
.footer-other-works{display:flex;align-items:baseline;flex-wrap:wrap;gap:10px 20px;padding-bottom:24px}
.footer-works-link{font-size:.85rem;text-decoration:underline;text-underline-offset:.18em}
.page-width{width:min(calc(100% - 64px),var(--max));margin:auto}
.breadcrumbs{display:flex;gap:12px;flex-wrap:wrap;align-items:center;padding:24px 0;font-size:11px;font-weight:600;letter-spacing:.06em;color:var(--muted)}
.breadcrumbs a{text-decoration:none}
.breadcrumbs span:last-child{color:var(--ink)}
.kicker{display:flex;align-items:center;gap:20px;flex-wrap:wrap;margin-bottom:24px;font-size:11px;font-weight:800;letter-spacing:.14em}
.kicker span:first-child{color:var(--accent)}
h1{font-size:clamp(32px,4.7vw,62px);letter-spacing:-.055em;line-height:1.25;font-weight:800;margin:0;text-wrap:balance}
.title-dot{color:var(--accent)}
.deck{font-size:17px;line-height:1.9;margin:24px 0 28px;color:var(--muted)}
.dates{display:flex;gap:24px;flex-wrap:wrap;margin:0;font:600 11px/1.5 ui-monospace,SFMono-Regular,Menlo,monospace}
.dates div{display:grid;gap:6px}
.dates dt{color:var(--muted);font:600 10px/1.2 "Yu Gothic",sans-serif;letter-spacing:.1em}
.dates dd{margin:0}
.cover{position:relative;background:var(--white);border:1px solid var(--line)}
.cover img{width:100%;height:auto}
.cover-note{position:absolute;right:16px;bottom:16px;background:var(--accent);color:var(--white);padding:6px 12px;font:700 10px/1.2 ui-monospace,SFMono-Regular,Menlo,monospace;letter-spacing:.06em}
.article-body{min-width:0;font-size:16px;line-height:2}
.article-body>h2{margin:72px 0 24px;font-size:28px;line-height:1.5;letter-spacing:-.035em}
.article-body>h2:first-child{margin-top:0}
.article-body h3{font-size:18px;line-height:1.6;margin:28px 0 14px}
.article-body p{margin:0 0 24px}
.article-body a{color:var(--accent);text-underline-offset:4px;text-decoration-thickness:1px}
.article-body strong{font-weight:800}
.article-body em{font-style:normal;text-decoration:underline;text-decoration-color:var(--accent);text-underline-offset:5px}
.article-body ul,.article-body ol{padding-left:24px;margin:16px 0}
.article-body li{padding-left:4px;margin:8px 0}
.article-body li ul,.article-body li ol{margin:8px 0;font-size:.92em}
.article-body li::marker{color:var(--accent);font-weight:700}
.article-body code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.85em;overflow-wrap:anywhere;background:var(--panel);padding:2px 5px}
.article-body pre{max-width:100%;white-space:pre-wrap;overflow-wrap:anywhere;margin:24px 0;padding:24px;background:var(--ink);color:var(--white);font-size:13px;line-height:1.8}
.article-body pre code{background:none;padding:0;color:inherit}
.article-body blockquote{margin:40px 0;padding:8px 0 8px 24px;border-left:3px solid var(--accent);color:var(--muted)}
.article-body blockquote p{margin:0}
.article-body figure{margin:40px 0}
.article-body figure img{width:100%;height:auto}
.article-body figcaption{color:var(--muted);font-size:12px;line-height:1.8;padding:16px 0 0}
.article-body table{width:100%;table-layout:fixed;border-collapse:collapse;text-align:left;line-height:1.8;font-size:14px;margin:32px 0}
.article-body th,.article-body td{padding:16px;border-bottom:1px solid var(--notes-line);overflow-wrap:anywhere;vertical-align:top}
.article-body th:first-child,.article-body td:first-child{width:38%}
.article-body th{font-size:12px;color:var(--notes-ink);background:var(--panel)}
.article-body .fm-step,.article-body .fm-parts,.article-body .fm-warning,.article-body .fm-verify{position:relative;margin:32px 0;padding:28px}
.article-body .fm-step>:last-child,.article-body .fm-parts>:last-child,.article-body .fm-warning>:last-child,.article-body .fm-verify>:last-child{margin-bottom:0}
.article-body .fm-parts h3{margin-top:14px}
.fm-step::before,.fm-parts::before,.fm-warning::before,.fm-verify::before,.fm-figure::before{display:block;line-height:1.3}
.fm-table::before{display:table-caption;text-align:left;caption-side:top;line-height:1.3}
.fm-step::before{content:"01 / STEP　手順"}
.fm-parts::before{content:"02 / PARTS　用意するもの"}
.fm-warning::before{content:"! / WARNING　注意"}
.fm-figure::before{content:"03 / FIGURE　図"}
.fm-table::before{content:"04 / TABLE　確認表"}
.fm-verify::before{content:"✓ / VERIFY　最終確認"}
@media(max-width:900px){.nav a:not(.nav-cta){display:none}
.page-width{width:calc(100% - 40px)}
.article-body{font-size:15px}
.article-body>h2{font-size:24px}
}
@media(max-width:560px){.site-shell{width:min(calc(100% - 20px),var(--max))}
.topbar-inner{min-height:62px}
.brand-copy span{display:none}
.breadcrumbs{padding:18px 0;font-size:10px;gap:8px}
.kicker{font-size:9px;gap:12px;margin-bottom:18px}
.dates{gap:18px;font-size:10px}
.deck{font-size:14px;margin:18px 0 24px}
.article-body>h2{margin-top:48px;font-size:22px}
.article-body h3{font-size:17px}
.article-body .fm-step,.article-body .fm-parts,.article-body .fm-warning,.article-body .fm-verify{padding:22px 18px}
.article-body pre{padding:18px;font-size:11px}
.article-body th,.article-body td{padding:12px 10px;font-size:12px}
.article-body blockquote{padding-left:18px;margin:28px 0}
.article-body figcaption{font-size:11px}
.cover-note{font-size:8px;padding:5px 8px;right:10px;bottom:10px}
}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}
}

.hero-a .cover{border:0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.hero-a .cover img{height:390px;object-fit:cover;object-position:center 47%}
.hero-a .article-intro{max-width:780px;margin:52px auto 0}
.variant-a h1{font-size:clamp(34px,4.8vw,62px)}
.variant-a .article-body{max-width:680px;width:calc(100% - 40px);margin:64px auto 96px;line-height:2.1}
.variant-a .article-body>h2{border-top:1px solid var(--line);padding-top:24px}
.variant-a .fm-step,.variant-a .fm-parts{background:var(--white);border:1px solid var(--notes-line)}
.variant-a .fm-warning{background:var(--panel);border-left:3px solid var(--accent)}
.variant-a .fm-verify{border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.variant-a .fm-step::before,.variant-a .fm-parts::before,.variant-a .fm-warning::before,.variant-a .fm-verify::before,.variant-a .fm-figure::before,.variant-a .fm-table::before{font:700 10px/1.4 ui-monospace,monospace;letter-spacing:.12em;color:var(--accent);margin-bottom:20px}
.variant-a .fm-figure{padding:0;border:0}
.variant-a .fm-table{border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.variant-a .fm-table::before{padding-bottom:16px}
.variant-a .fm-table th{background:transparent;border-bottom:1px solid var(--line)}
@media(max-width:560px){.hero-a .cover img{height:220px;object-fit:cover;object-position:56% 46%}
.hero-a .article-intro{margin-top:28px}
.variant-a .article-body{margin-top:40px;margin-bottom:64px}
.variant-a h1{font-size:34px}
}
.variant-a h1{word-break:auto-phrase}