:root{
  --bg:#f6f8fc; --surface:#ffffff; --surface-2:#eef2f9;
  --ink:#152232; --muted:#5b6a7d; --line:#e4e9f2; --line-strong:#cfd8e6;
  --accent:#1f6feb;
  --reseller:#7a5af0; --admin:#1f6feb; --user:#12a586;
  --warn-bg:#fff6e6; --warn-line:#f0c674; --warn-ink:#7a4d0a;
  --tip-bg:#eaf6ff; --tip-line:#9fd0ff; --tip-ink:#0b4a7a;
  --code-bg:#eef2f9;
  --shadow:0 1px 2px rgba(20,34,50,.05), 0 10px 30px rgba(20,34,50,.06);
  --sans:"Noto Sans JP", system-ui, -apple-system, "Hiragino Kaku Gothic ProN", sans-serif;
  --disp:"Zen Kaku Gothic New", var(--sans);
  --mono:"Roboto Mono", ui-monospace, "SFMono-Regular", monospace;
}
@media (prefers-color-scheme: dark){ :root:not([data-theme="light"]){
  --bg:#0e151f; --surface:#161f2b; --surface-2:#1b2634;
  --ink:#e7eef7; --muted:#94a4b8; --line:#28374a; --line-strong:#33465d;
  --accent:#5aa2ff; --reseller:#a48bff; --admin:#5aa2ff; --user:#37c9a3;
  --warn-bg:#33260f; --warn-line:#7a5a1f; --warn-ink:#ffd591;
  --tip-bg:#10283b; --tip-line:#2f5f86; --tip-ink:#a7d8ff;
  --code-bg:#1b2634; --shadow:0 1px 2px rgba(0,0,0,.3), 0 10px 30px rgba(0,0,0,.35);
}}
:root[data-theme="dark"]{
  --bg:#0e151f; --surface:#161f2b; --surface-2:#1b2634;
  --ink:#e7eef7; --muted:#94a4b8; --line:#28374a; --line-strong:#33465d;
  --accent:#5aa2ff; --reseller:#a48bff; --admin:#5aa2ff; --user:#37c9a3;
  --warn-bg:#33260f; --warn-line:#7a5a1f; --warn-ink:#ffd591;
  --tip-bg:#10283b; --tip-line:#2f5f86; --tip-ink:#a7d8ff;
  --code-bg:#1b2634; --shadow:0 1px 2px rgba(0,0,0,.3), 0 10px 30px rgba(0,0,0,.35);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0; background:var(--bg); color:var(--ink); font-family:var(--sans); line-height:1.75; font-size:15px; -webkit-font-smoothing:antialiased}
img{max-width:100%}
[hidden]{display:none!important}
a{color:var(--accent); text-underline-offset:2px}
h1,h2,h3,h4{font-family:var(--disp); line-height:1.35; text-wrap:balance; margin:0}
.wrap{max-width:820px; margin:0 auto; padding-inline:18px; padding-block:0}
header.top{position:sticky; top:0; z-index:20; background:color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter:blur(8px); border-bottom:1px solid var(--line)}
.top .wrap{display:flex; align-items:center; gap:14px; padding-block:12px; flex-wrap:wrap}
.brand{display:flex; align-items:center; gap:10px; margin-right:auto}
.brand .logo{width:30px; height:30px; border-radius:8px; display:grid; place-items:center; background:linear-gradient(135deg,var(--admin),var(--user)); color:#fff; font-size:16px; box-shadow:var(--shadow)}
.brand b{font-family:var(--disp); font-size:15px; letter-spacing:.02em}
nav.toc{display:flex; gap:4px; flex-wrap:wrap}
nav.toc a{font-size:13px; color:var(--muted); text-decoration:none; padding:6px 11px; border-radius:999px; border:1px solid transparent; white-space:nowrap}
nav.toc a:hover{color:var(--ink); background:var(--surface-2)}
.hero{padding-block:30px 8px}
.eyebrow{font-size:12px; letter-spacing:.16em; text-transform:uppercase; color:var(--muted); font-weight:700}
.hero h1{font-size:clamp(24px,5vw,34px); margin:.28em 0 .35em}
.hero p.lead{color:var(--muted); font-size:16px; max-width:60ch; margin:0}
.urlcard{background:var(--surface); border:1px solid var(--line); border-radius:14px; padding:14px 16px; box-shadow:var(--shadow); display:flex; flex-direction:column; gap:4px; margin:18px 0 4px}
.urlcard .k{font-size:12px; color:var(--muted); font-weight:700; letter-spacing:.04em}
.urlcard a{font-family:var(--mono); font-size:13px; word-break:break-all}
section{scroll-margin-top:84px; padding-block:28px; border-top:1px solid var(--line)}
section:first-of-type{border-top:none}
h2.sec{font-size:22px; display:flex; align-items:center; gap:12px}
.rolebar{display:inline-flex; align-items:center; gap:8px; font-family:var(--disp); font-weight:700; font-size:12px; letter-spacing:.06em; color:#fff; padding:5px 12px; border-radius:999px}
.rolebar.admin{background:var(--admin)} .rolebar.user{background:var(--user)}
h3.grp{font-size:16px; margin:24px 0 8px; padding-left:12px; border-left:3px solid var(--line-strong)}
p{margin:.5em 0}
.muted{color:var(--muted)}
ol.steps{list-style:none; counter-reset:s; padding:0; margin:10px 0; display:flex; flex-direction:column; gap:12px}
ol.steps>li{counter-increment:s; position:relative; padding:14px 16px 14px 52px; background:var(--surface); border:1px solid var(--line); border-radius:12px; box-shadow:var(--shadow)}
ol.steps>li::before{content:counter(s); position:absolute; left:14px; top:13px; width:26px; height:26px; border-radius:50%; display:grid; place-items:center; font-family:var(--mono); font-size:13px; font-weight:700; color:#fff; background:var(--step,var(--accent))}
ol.steps.admin>li{--step:var(--admin)} ol.steps.user>li{--step:var(--user)}
.sub{margin:6px 0 0; padding-left:1.1em; color:var(--muted); font-size:14px}
.sub li{margin:2px 0}
.ui{display:inline-block; font-family:var(--sans); font-weight:700; font-size:.92em; padding:1px 8px; border-radius:7px; background:var(--surface-2); border:1px solid var(--line-strong); white-space:nowrap}
code,.path{font-family:var(--mono); font-size:.88em; background:var(--code-bg); padding:1px 6px; border-radius:6px; word-break:break-all}
.note{border-radius:12px; padding:12px 14px 12px 16px; margin:14px 0; font-size:14px; border:1px solid; border-left-width:4px}
.note b{font-weight:700}
.note.warn{background:var(--warn-bg); border-color:var(--warn-line); color:var(--warn-ink)}
.note.tip{background:var(--tip-bg); border-color:var(--tip-line); color:var(--tip-ink)}
figure{margin:12px 0; background:var(--surface); border:1px solid var(--line); border-radius:12px; padding:10px; box-shadow:var(--shadow)}
figure img{display:block; width:100%; border-radius:8px; border:1px solid var(--line)}
figcaption{font-size:13px; color:var(--muted); margin-top:8px; text-align:center}
hr.soft{border:none; border-top:1px dashed var(--line-strong); margin:22px 0}
footer{color:var(--muted); font-size:13px; padding-block:26px 40px; border-top:1px solid var(--line); text-align:center}
:focus-visible{outline:2px solid var(--accent); outline-offset:2px; border-radius:4px}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
.backlink{display:inline-flex; align-items:center; gap:6px; font-size:13px; text-decoration:none; color:var(--muted); border:1px solid var(--line); padding:6px 11px; border-radius:999px}
.backlink:hover{color:var(--ink); background:var(--surface-2)}