:root{--bg:#fbfaf6;--fg:#1d2a24;--mut:#5b6b63;--acc:#1f6b4f;--line:#d9d6cb;--bad:#a02828;--warn:#fff4d6}
@media (prefers-color-scheme:dark){:root{--bg:#161d19;--fg:#e8efe9;--mut:#9fb0a6;--acc:#5fc79c;--line:#2d3a33;--bad:#ff8a80;--warn:#3a3217}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.7 system-ui,"Hiragino Sans","Noto Sans JP",sans-serif}
main{margin:0 auto;padding:16px}
main.narrow{max-width:640px}main.wide{max-width:1080px}
h1{font-size:1.5rem;line-height:1.4}h2{font-size:1.2rem;margin-top:2rem}h3{font-size:1.05rem}
a{color:var(--acc)}
label{display:block;margin:.7rem 0}label.chk{display:flex;gap:.5rem;align-items:center}
input,select,textarea,button{font:inherit}
input:not([type=checkbox]),select,textarea{display:block;width:100%;padding:.55rem;border:1px solid var(--line);border-radius:6px;background:transparent;color:inherit;max-width:100%}
button,.button{display:inline-block;padding:.6rem 1rem;border:1px solid var(--acc);border-radius:6px;background:transparent;color:var(--acc);cursor:pointer;text-decoration:none;min-height:44px}
button.primary,.button.primary{background:var(--acc);color:var(--bg)}
button.danger{border-color:var(--bad);color:var(--bad)}
table{border-collapse:collapse;width:100%;font-size:.92rem;display:block;overflow-x:auto}
th,td{border-bottom:1px solid var(--line);padding:.4rem .5rem;text-align:left;vertical-align:top}
.banner{background:var(--warn);padding:.5rem 1rem;text-align:center;font-size:.95rem}.banner.bad{color:var(--bad)}.banner.demo{background:#e0efe7;color:#143}
.note{background:var(--warn);padding:.6rem .8rem;border-radius:6px}.err{color:var(--bad)}.small,small{color:var(--mut);font-size:.85rem}
.tag{background:var(--bad);color:#fff;border-radius:4px;padding:0 .4rem;font-size:.8rem}
.url{word-break:break-all;background:#0001;padding:.8rem;border-radius:6px;font-family:ui-monospace,monospace}
.big{font-size:1.2rem;font-weight:700}.strip{background:#0001;padding:.5rem;border-radius:6px}
nav{display:flex;gap:1rem;padding:.5rem 16px;border-bottom:1px solid var(--line)}
footer{max-width:1080px;margin:2rem auto;padding:0 16px;color:var(--mut);font-size:.85rem}
.msg{min-height:1.5rem}.msg.err{color:var(--bad)}.msg.ok{color:var(--acc)}
form.inline label{display:inline}
.tk{border:1px solid var(--line);border-radius:10px;padding:1rem;margin:1rem 0;text-align:center}
.tk canvas{max-width:100%;height:auto;background:#fff;padding:8px}
.tk .code{font:700 1.6rem ui-monospace,monospace;letter-spacing:.1em}
.st-cancelled{opacity:.5;text-decoration:line-through}