:root{--bg:#f6f7f8;--panel:#fff;--ink:#1c2128;--muted:#5b6470;--line:#dde1e6;--tint:#eef0f2;--accent:#1d5c63}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;background:var(--bg);color:var(--ink);font:400 16px/1.85 "Noto Sans JP","Hiragino Sans","Yu Gothic",sans-serif;-webkit-font-smoothing:antialiased}
.wrap{max-width:960px;margin:0 auto;padding:0 24px}
a{color:var(--accent);text-underline-offset:3px}
a:focus-visible{outline:2px solid var(--accent);outline-offset:3px}

header{background:var(--panel);border-bottom:1px solid var(--line)}
.bar{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:4px 24px;padding:14px 24px}
.brand{font-size:1.25rem;font-weight:700;letter-spacing:.02em;color:var(--ink);text-decoration:none}
nav{display:flex;flex-wrap:wrap;gap:4px 22px}
nav a{padding:4px 0;border-bottom:2px solid transparent;color:var(--muted);font-size:.9375rem;font-weight:500;text-decoration:none}
nav a:hover{color:var(--ink)}
nav a[aria-current=page]{color:var(--ink);border-bottom-color:var(--accent)}

section{padding:48px 0;border-top:1px solid var(--line)}
.hero{padding:72px 0 56px;border-top:0}
h1{margin:0 0 16px;font-size:clamp(1.75rem,4.5vw,2.625rem);line-height:1.4;font-weight:700}
h2{margin:0 0 20px;font-size:1.5rem;line-height:1.5;font-weight:700}
h3{margin:28px 0 8px;font-size:1.0625rem;font-weight:700}
p{margin:0 0 12px;max-width:40em}
ul,ol{margin:0 0 12px;padding-left:1.4em;max-width:40em}
li{margin:4px 0}
.lead{margin-bottom:28px;color:var(--muted);font-size:1.0625rem}
.note{color:var(--muted);font-size:.9375rem}

.btns{display:flex;flex-wrap:wrap;gap:12px}
.btn{display:inline-block;padding:12px 24px;border:1px solid var(--accent);border-radius:6px;background:var(--accent);color:#fff;font-weight:700;text-decoration:none}
.btn.sub{background:transparent;color:var(--accent)}
.btn:hover{opacity:.88}

table{width:100%;max-width:640px;margin:0 0 12px;border-collapse:collapse;background:var(--panel)}
th,td{padding:12px 16px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
th{font-weight:500}
td:last-child{text-align:right;white-space:nowrap;font-weight:700}
thead th,.grp th{background:var(--tint);color:var(--muted);font-size:.875rem}
thead th:last-child{text-align:right}

.steps{padding:0;list-style:none;counter-reset:s}
.steps li{position:relative;margin:0 0 16px;padding-left:44px;counter-increment:s}
.steps li::before{content:counter(s);position:absolute;left:0;top:2px;width:28px;height:28px;border-radius:50%;background:var(--accent);color:#fff;font-size:.875rem;font-weight:700;line-height:28px;text-align:center}

.works{max-width:none;padding:0;list-style:none}
.work{display:flex;flex-wrap:wrap;justify-content:space-between;gap:4px 24px;margin:0;padding:20px 0;border-bottom:1px solid var(--line)}

footer{padding:32px 0 48px;border-top:1px solid var(--line);color:var(--muted);font-size:.875rem}
footer p{margin:0 0 4px}
@media (max-width:480px){.hero{padding:48px 0 40px}th,td{padding:10px 12px}}