:root{--ink:#17221d;--muted:#667069;--paper:#f8f5ee;--card:#fff;--green:#125c46;--mint:#dcefe5;--orange:#e86f3d;--line:#d9ded8}
body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans JP",sans-serif;line-height:1.8}
.skip{position:absolute;left:-9999px}.skip:focus{left:16px;top:16px;z-index:10;background:#fff;padding:8px 12px}
.site-header{max-width:none;height:auto;display:flex;justify-content:space-between;align-items:center;padding:16px max(5vw,24px);margin:0;background:#fff;border-bottom:1px solid var(--line)}
.brand{display:block;font-family:inherit;font-size:1rem;font-weight:900;text-decoration:none;color:var(--ink);letter-spacing:0}.brand small{display:block;font-size:.68rem;color:var(--muted);margin-top:0}
.site-header nav{display:block;font-size:.9rem}.site-header nav a{margin-left:18px;text-decoration:none}
.layout,.article-layout{width:min(1120px,92vw);max-width:none;margin:42px auto;padding:0;display:grid;grid-template-columns:minmax(0,760px) 260px;gap:44px}
.breadcrumb{display:block;font-size:.82rem;color:var(--muted);margin-bottom:24px}.breadcrumb span{margin:0 5px}
.article-header{padding:0;border:0}.article-header h1{font-family:inherit;font-size:clamp(2.15rem,6vw,4.3rem);line-height:1.08;margin:.2em 0}.lead{font-size:1.12rem;max-width:46em;color:var(--ink)}
.byline{display:block;font-size:.8rem;color:var(--muted)}.eyebrow,.section-no,.product-kicker{color:var(--orange);font-weight:900;letter-spacing:.12em}
.notice,.summary,.toc,.side>div{background:#fff;color:var(--ink);border:1px solid var(--line);border-radius:12px;padding:20px;margin:25px 0}.summary h2{font-family:inherit}
.toc{border:1px solid var(--line)}.toc ol{columns:2;padding-left:1.2em}.article-hero,figure{margin:28px 0}.article-hero img,.before-after img,figure img{display:block;width:100%;border-radius:12px}
.product,.step{background:var(--card);border:1px solid var(--line);border-left:1px solid var(--line);border-radius:18px;padding:clamp(20px,4vw,38px);margin:24px 0 52px;box-shadow:0 12px 36px rgba(20,40,30,.06)}
.article-layout article section,.layout article section,section{scroll-margin-top:20px;margin:64px 0}.product h2,.step h2,.article-layout section>h2,.layout section>h2{font-family:inherit;font-size:clamp(1.65rem,4vw,2.45rem);line-height:1.3}
.table-wrap{overflow-x:auto;margin:25px 0}.table-wrap table{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);font-size:.88rem}.table-wrap th,.table-wrap td{padding:12px;text-align:left;vertical-align:top;border-bottom:1px solid var(--line)}.table-wrap th{color:var(--muted)}
.amazon-link{display:inline-block;background:#ff9900;color:#1b1b1b;text-decoration:none;font-weight:900;border-radius:8px;padding:12px 18px;margin-top:0}
.closing{background:var(--green);color:#fff;border-radius:18px;padding:28px!important;margin:50px 0}.closing h2{margin-top:0;color:#fff}
.side{position:relative;padding-top:0}.side>div{position:sticky;top:20px;font-size:.9rem;border:1px solid var(--line)}.side p{color:var(--muted)}
body>footer{max-width:none;margin:0;padding:35px 5vw;background:#17221d;color:#fff;border:0;display:block}.footer-brand{width:auto;color:#fff;font:900 1rem inherit}.footer-brand span{font:inherit;color:#fff;margin-left:0}.disclosure{font-size:.82rem;color:#fff}body>footer a{color:#fff}
@media(max-width:850px){.layout,.article-layout{display:block;width:min(760px,92vw)}.side{display:none}}
@media(max-width:560px){.toc ol{columns:1}.site-header nav{display:none}.article-header h1{font-size:clamp(2.15rem,12vw,3.3rem)}}