:root{--cream:#fff9ec;--ink:#30283f;--muted:#736b7e;--purple:#624293;--lavender:#f2ecf8;--line:#e4dcec;--green:#3d7563}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:28px}body{margin:0;background:var(--cream);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans JP",sans-serif;line-height:1.9}a{color:var(--purple);text-underline-offset:4px}button,input{font:inherit}.skip{position:absolute;left:12px;top:-100px;padding:10px;background:#fff;z-index:10}.skip:focus{top:12px}:focus-visible{outline:3px solid #a58acc;outline-offset:4px}.site-header{max-width:1200px;margin:auto;padding:22px 28px;display:flex;align-items:center;gap:24px;flex-wrap:wrap;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-weight:800;font-size:19px}.brand img{object-fit:contain}.site-header nav{display:flex;align-items:center;gap:18px;font-size:13px}.site-header nav a{text-decoration:none}.site-header .language-switch{margin-left:auto;gap:7px;font-size:12px}.article-shell{max-width:1040px;margin:34px auto 60px;padding:0 24px}article{padding:clamp(24px,4.5vw,62px);background:white;border:1px solid var(--line);border-radius:24px;box-shadow:0 12px 38px #52387e04}.eyebrow{color:var(--purple);font-size:12px;font-weight:750;letter-spacing:.08em;margin:0 0 14px}h1{text-wrap:balance;font-size:clamp(26px,3.5vw,38px);line-height:1.55;letter-spacing:-.025em;margin:0 0 16px;color:#44305f}.subtitle{display:block;margin-top:9px;font-size:.59em;font-weight:600;letter-spacing:0}.article-meta{color:var(--muted);font-size:12px;margin:14px 0 24px}.lead{font-size:18px!important;line-height:2!important;color:#4e405f}p{font-size:16px;line-height:2;margin:18px 0}h2{font-size:clamp(21px,2.4vw,27px);line-height:1.65;margin:0 0 18px;letter-spacing:-.02em}section{margin-top:52px}section:target{scroll-margin-top:24px}.highlights{display:flex;flex-wrap:wrap;gap:9px;list-style:none;padding:0;margin:26px 0}.highlights li{font-size:12px;font-weight:650;color:#624a7f;background:var(--lavender);padding:8px 12px;border-radius:10px}.article-figure{margin:28px 0 32px;border:1px solid var(--line);border-radius:14px;overflow:hidden;background:#fffaf0}.article-figure>a{display:block;line-height:0}.article-figure img{display:block;width:100%;height:auto}.article-figure figcaption{padding:13px 17px;color:var(--muted);font-size:12px;line-height:1.8;background:#fbf9fd}.article-figure figcaption a{white-space:nowrap}.start-card{background:#f6f2fb;border:1px solid #ddd0ec;border-radius:15px;padding:25px 28px;margin:32px 0}.start-card h2{font-size:21px}.start-card p{font-size:15px}.actions{display:flex;flex-wrap:wrap;gap:12px;margin:22px 0 0}.button{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:12px 18px;border-radius:11px;font-size:14px;font-weight:700;text-decoration:none;line-height:1.6}.button.primary{background:var(--purple);color:white}.button.primary:hover{background:#51317e}.button.secondary{border:1px solid #d7c7e6;background:white;color:var(--purple)}.button.secondary:hover{background:#f5f0fb}.toc{background:#faf8fc;border:1px solid var(--line);border-radius:13px;padding:21px 25px;margin:30px 0 38px}.toc>strong{font-size:14px;color:var(--purple)}.toc ol{padding-left:22px;margin:12px 0 0}.toc li{font-size:14px;line-height:1.8;margin:7px 0}.table-scroll{overflow:auto;border:1px solid var(--line);border-radius:12px;margin:24px 0}table{border-collapse:collapse;width:100%;min-width:420px;font-size:14px}th,td{padding:15px 17px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top;line-height:1.8}thead{background:var(--lavender)}tbody th{width:29%;font-weight:650}tbody tr:last-child>*{border-bottom:0}.steps{padding:0;list-style:none;counter-reset:steps;margin:24px 0;display:grid;gap:13px}.steps li{counter-increment:steps;background:#faf8fc;border:1px solid var(--line);border-radius:12px;padding:21px 22px 18px 63px;position:relative}.steps li::before{content:counter(steps);position:absolute;left:20px;top:22px;width:27px;height:27px;background:var(--purple);color:white;border-radius:50%;text-align:center;line-height:27px;font-size:14px;font-weight:700}.steps strong{font-size:16px}.steps p{font-size:14px;margin:8px 0 0}.related{font-size:14px}.end-note{font-size:13px;color:var(--muted);border-top:1px solid var(--line);padding-top:20px;margin-top:36px}.site-footer{max-width:1040px;margin:0 auto;padding:0 24px 32px;color:var(--muted)}.site-footer p{font-size:12px;margin:7px 0}html[lang=en] body{line-height:1.8}html[lang=en] h1{font-size:clamp(27px,3.5vw,40px)}
@media(max-width:650px){.site-header{padding:15px 19px;gap:13px 18px}.brand{font-size:17px}.brand img{width:31px;height:31px}.site-header nav{font-size:12px;gap:14px}.site-header .language-switch{margin-left:0}.article-shell{padding:0 12px;margin:18px auto 34px}article{border-radius:17px;padding:26px 20px}.article-meta{margin:14px 0 20px}.lead{font-size:16px!important}p{font-size:15px}h1{font-size:27px}.subtitle{font-size:17px;line-height:1.7}.highlights{gap:7px}.highlights li{font-size:11px;padding:7px 9px}.article-figure{margin-left:-9px;margin-right:-9px}.article-figure figcaption{padding:11px 13px;font-size:11px}.start-card{padding:21px 18px}.start-card h2{font-size:20px}.actions{gap:10px}.button{width:100%;font-size:13px;padding:12px 15px}.toc{padding:19px 18px}.toc li{font-size:13px}section{margin-top:37px}h2{font-size:21px}.steps li{padding:18px 16px 18px 54px}.steps li::before{left:16px;top:20px}.steps strong{font-size:15px}.steps p{font-size:13px}html[lang=en] h1{font-size:28px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}