:root{--bg:#fff;--fg:#161616;--muted:#555;--line:#d4d4d4;--card:#f6f6f6;--accent:#ff6b00;--on-accent:#111;--link:#a84300;--link-hover:#7a3000;--warn-bg:#fff4e5;--err:#b00020;color-scheme:light dark}
@media (prefers-color-scheme:dark){:root{--bg:#121212;--fg:#ececec;--muted:#b2b2b2;--line:#3a3a3a;--card:#1b1b1b;--link:#ff9a52;--link-hover:#ffb27a;--warn-bg:#2a1d10;--err:#ff6b7a}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.6 system-ui,-apple-system,"Hiragino Sans","Noto Sans JP",sans-serif}
a{color:var(--link);text-decoration:underline;text-underline-offset:2px;font-style:normal}
a:hover{color:var(--link-hover);text-decoration-thickness:2px}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
.wrap{max-width:720px;margin:0 auto;padding:0 20px}
.wrap:not(.doc){max-width:840px}
.draft{background:var(--warn-bg);border-bottom:1px solid var(--accent);padding:8px 0;font-size:14px;font-weight:600}
header.top{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:16px 0;font-size:14px;color:var(--muted)}
.brand{min-width:0}
.mark{display:flex;align-items:center;gap:8px;color:var(--fg);font-weight:700;font-size:15px;letter-spacing:.02em}
.mark img{display:block;width:24px;height:24px;padding:2px;border-radius:6px;background:#fff}
.byline{text-wrap:balance;font-size:12px;line-height:1.4;margin-top:2px}
.lang{flex:none}
.lang a{display:inline-flex;align-items:center;justify-content:center;min-width:44px;min-height:44px;margin-left:0;padding:0 8px}
.vh{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.lang [aria-current]{color:var(--fg);font-weight:700;text-decoration:none}
body{overflow-wrap:break-word;word-break:normal}
:lang(ja){line-break:strict;word-break:normal}
h1,.sub{text-wrap:balance}
:lang(ja) h1{word-break:keep-all}
@supports (word-break:auto-phrase){:lang(ja) :is(h1,.sub){word-break:auto-phrase}}
h1{font-size:clamp(1.75rem,5vw,2.5rem);line-height:1.25;margin:12px 0 12px}
h2{font-size:1.25rem;margin:0 0 8px}
h3{font-size:1rem;margin:16px 0 12px}
.sub{font-size:1.125rem;color:var(--muted);margin:0 0 24px}
ul.benefits{padding-left:1.2em;margin:0 0 32px}
ul.benefits li{margin-bottom:8px}
.hero{display:grid;grid-template-columns:1fr;gap:8px;align-items:center;margin-top:8px}
.hero .sub{margin-bottom:16px}
.pill{display:inline-block;margin:0;padding:3px 12px;border:1px solid var(--accent);border-radius:999px;background:var(--warn-bg);color:var(--fg);font-size:13px;font-weight:600;line-height:1.5}
.art{width:168px;max-width:60%;margin:0 0 8px;justify-self:start}
.art svg{display:block;width:100%;height:auto}
.art .bg{fill:var(--card);stroke:var(--line);stroke-width:2}
.art .ln{fill:var(--line)}
.art .ac{fill:var(--accent)}
.art .hl{fill:var(--warn-bg);stroke:var(--accent);stroke-width:1.5}
.art .mc{fill:var(--line)}
.art .acs,.art .mcs{fill:none;stroke-width:3;stroke-linecap:round;stroke-linejoin:round}
.art .acs{stroke:var(--accent)}
.art .mcs{stroke:var(--muted)}
.art .dash{stroke-dasharray:2 7}
@media (min-width:720px){.hero{grid-template-columns:1fr 252px;gap:32px;margin-top:16px}.art{width:100%;max-width:none;margin:0;justify-self:end}.hero .sub{margin-bottom:8px}}
.lead-in{margin:0 0 16px}
.lead-in p{margin:0}
.lead-in .calm{text-wrap:balance;font-size:1.0625rem;font-weight:600}
.lead-in .fine{margin:4px 0 0}
.status[tabindex="-1"]:focus{outline:none}
.status{border-left:4px solid var(--accent);background:var(--card);padding:12px 16px;margin:0 0 24px}
form,.opinion{background:var(--card);border:1px solid var(--line);border-radius:8px;padding:20px;margin-bottom:32px}
label{display:block;font-weight:600;margin-bottom:6px}
input[type=email],input[type=text],textarea,select{width:100%;font:inherit;color:var(--fg);background:var(--bg);border:1px solid var(--muted);border-radius:6px;padding:10px 12px}
textarea{min-height:88px}
.field{margin-bottom:16px}
.consent{display:flex;gap:10px;align-items:flex-start;font-size:14px;margin:16px 0 8px}
.consent input{margin-top:4px;width:20px;height:20px;flex:none}
.consent label{font-weight:400;margin:0}
.fine{font-size:13px;color:var(--muted);margin:0 0 16px}
button{font:inherit;font-weight:700;background:var(--accent);color:var(--on-accent);border:0;border-radius:6px;padding:12px 20px;min-height:44px;cursor:pointer}
a.btn{display:inline-block;font-weight:700;background:var(--accent);color:var(--on-accent);border-radius:6px;padding:12px 20px;min-height:44px;box-sizing:border-box;text-decoration:none}
button:disabled{opacity:.6;cursor:wait}
button:focus-visible,a.btn:focus-visible{outline-color:var(--fg)}
a.btn:hover,a.btn:active{color:var(--on-accent);text-decoration:none}
button:not(:disabled):hover,a.btn:hover{filter:brightness(.92)}
button:not(:disabled):active,a.btn:active{filter:brightness(.85)}
@media (prefers-reduced-motion:no-preference){button,a.btn{transition:filter .15s}}
.setup{margin:24px 0}
.msg{margin-top:12px;font-weight:600}
.msg.err{color:var(--err)}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
footer{border-top:1px solid var(--line);padding:24px 0 40px;font-size:13px;color:var(--muted)}
footer p{margin:0 0 8px}
.doc h2{margin-top:28px}
.doc li{margin-bottom:6px}
.todo{background:var(--warn-bg);padding:2px 6px;border-radius:4px}
@media (max-width:480px){form,.opinion{padding:16px}button,a.btn{width:100%;text-align:center}}
.nb{white-space:nowrap;word-break:keep-all}
.built-on{font-size:.9375rem;color:var(--muted);margin:0 0 16px}
ul.benefits li strong{font-weight:700}
.explainer{border-left:4px solid var(--accent);background:var(--card);padding:12px 16px;margin:0 0 24px}
.explainer h2{font-size:1.0625rem;margin:0 0 6px}
.explainer p{margin:0 0 6px}
.explainer .more{margin:0}
.skills ul{margin:0 0 6px;padding-left:20px}