:root{
  --bg:#fbf7ee; --ink:#23283a; --sub:#4a5068; --line:#23283a;
  --y:#f6e3a1; --y-d:#7a5c00;
  --b:#d3e2f3; --b-d:#2a5586;
  --p:#f5d5d9; --p-d:#9a3f55;
  --white:#fffdf8;
  --head:"Hiragino Maru Gothic ProN","Hiragino Maru Gothic Pro","M PLUS Rounded 1c","BIZ UDPGothic","Yu Gothic UI","Meiryo",sans-serif;
  --body:"Hiragino Sans","Hiragino Kaku Gothic ProN","Yu Gothic UI","Noto Sans JP","Meiryo",sans-serif;
  color-scheme:light;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.85 var(--body);overflow-wrap:anywhere;-webkit-text-size-adjust:100%}
a{color:var(--b-d)}
:focus-visible{outline:3px solid var(--ink);outline-offset:3px;border-radius:6px}
.wrap{max-width:1040px;margin:0 auto;padding:0 16px}
h1,h2,h3{font-family:var(--head);font-weight:800;line-height:1.35;margin:0}
h2{font-size:clamp(1.5rem,3.6vw,2rem);margin-bottom:.6em}
h3{font-size:1.15rem;margin-bottom:.3em}
p{margin:0 0 1em}
section{padding:56px 0 8px}
.skip{position:absolute;left:-999px}.skip:focus{left:16px;top:8px;background:var(--white);padding:8px 12px;z-index:9}

/* header */
.top{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:16px 0;flex-wrap:wrap}
.brand{font-family:var(--head);font-weight:800;font-size:1.05rem}
.brand small{font-weight:600;color:var(--sub);font-size:.8rem;margin-left:.5em}
.badge{display:inline-block;background:var(--ink);color:var(--y);font-family:var(--head);font-weight:800;border-radius:999px;padding:.15em .9em;font-size:.95rem}

/* hero */
.hero{padding:24px 0 24px}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:32px;align-items:center}
.hero h1{font-size:clamp(2.4rem,7vw,4rem);letter-spacing:.02em;margin:.2em 0 .15em}
.hero h1 span{background:linear-gradient(transparent 62%,var(--y) 62%)}
.lead{font-size:1.15rem;font-weight:600}
.notice{background:var(--white);border:2px solid var(--line);border-radius:20px;padding:14px 18px;margin-top:20px;box-shadow:5px 5px 0 var(--y)}
.notice p{margin:0}
.notice strong{font-family:var(--head)}
.postbox{display:grid;place-items:center}
.postbox svg{width:100%;max-width:340px;height:auto}

/* cards */
.grid{display:grid;gap:20px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.card{border:2px solid var(--line);border-radius:24px;padding:22px 22px 14px;box-shadow:5px 5px 0 var(--line)}
.card.y{background:var(--y)}.card.b{background:var(--b)}.card.p{background:var(--p)}
.card.w{background:var(--white)}
.tag{display:inline-block;font-family:var(--head);font-weight:800;font-size:.85rem;border-radius:999px;padding:0 .8em;background:var(--white);border:2px solid var(--line);margin-bottom:.6em}
.card ul{margin:0 0 1em;padding-left:1.3em}
.small{font-size:.9rem;color:var(--sub)}

/* flow */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:28px;counter-reset:s;list-style:none;padding:0;margin:0 0 24px}
.flow li{position:relative;border:2px solid var(--line);border-radius:24px;padding:18px 16px 8px;box-shadow:4px 4px 0 var(--line)}
.flow li:nth-child(1){background:var(--y)}.flow li:nth-child(2){background:var(--b)}.flow li:nth-child(3){background:var(--p)}.flow li:nth-child(4){background:var(--white)}
.flow li::before{counter-increment:s;content:counter(s);display:grid;place-items:center;width:34px;height:34px;border-radius:50%;background:var(--ink);color:var(--white);font-family:var(--head);font-weight:800;margin-bottom:.5em}
.flow li:not(:last-child)::after{content:"";position:absolute;right:-24px;top:50%;width:18px;height:18px;border-top:4px solid var(--ink);border-right:4px solid var(--ink);transform:translateY(-50%) rotate(45deg);border-radius:2px}
.flow h3{font-size:1.05rem}
.flow p{font-size:.95rem;line-height:1.7}

.steps{background:var(--white);border:2px solid var(--line);border-radius:24px;padding:20px 22px;box-shadow:5px 5px 0 var(--b)}
.steps ol{list-style:none;display:flex;margin:14px 0 8px;padding:0;gap:0}
.steps li{flex:1;text-align:center;position:relative;font-family:var(--head);font-weight:800}
.steps li::before{content:"";position:absolute;top:19px;left:-50%;right:50%;height:6px;background:var(--ink);opacity:.2}
.steps li:first-child::before{display:none}
.steps .dot{position:relative;display:grid;place-items:center;width:40px;height:40px;border-radius:50%;margin:0 auto 4px;border:2px solid var(--line);font-size:1rem}
.steps li:nth-child(1) .dot{background:var(--p)}.steps li:nth-child(2) .dot{background:var(--y)}.steps li:nth-child(3) .dot{background:var(--b)}.steps li:nth-child(4) .dot{background:var(--p)}.steps li:nth-child(5) .dot{background:var(--y)}
.steps li span{font-size:.85rem;font-weight:600;color:var(--sub);display:block}

/* mock */
.mock{background:var(--b);border:2px solid var(--line);border-radius:28px;padding:18px;box-shadow:6px 6px 0 var(--line)}
.mock-head{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-bottom:12px}
.mock-head .badge{background:var(--white);color:var(--ink);border:2px solid var(--line);font-size:.8rem}
.msg{display:flex;gap:10px;margin-bottom:14px}
.ava{flex:none;width:42px;height:42px;border-radius:50%;background:var(--y);border:2px solid var(--line);display:grid;place-items:center;font-family:var(--head);font-weight:800}
.bubble{background:var(--white);border:2px solid var(--line);border-radius:6px 20px 20px 20px;padding:12px 16px;min-width:0;flex:1;font-size:.98rem;line-height:1.75}
.who{font-family:var(--head);font-weight:800;font-size:.9rem;margin-bottom:2px}
.who small{font-weight:600;color:var(--sub);margin-left:.5em}
.bubble p{margin:0 0 .6em}
.src{font-size:.88rem;color:var(--sub)}
.src u{color:var(--b-d)}
.warn{font-size:.85rem;background:var(--p);border-radius:10px;padding:4px 10px;display:inline-block;margin-top:2px}
.q{font-weight:700}
.spoiler{font:inherit;color:inherit;border:2px dashed var(--line);border-radius:12px;background:#c8ccd8;padding:2px 14px;cursor:pointer;min-height:44px;display:inline-block;text-align:left}
.spoiler .a{visibility:hidden}
.spoiler[aria-expanded="true"]{background:var(--y);border-style:solid}
.spoiler[aria-expanded="true"] .a{visibility:visible}
.spoiler .hint{display:inline}
.spoiler[aria-expanded="true"] .hint{display:none}
.spoiler{position:relative}
.spoiler .hint{position:absolute;left:0;right:0;top:50%;transform:translateY(-50%);text-align:center;font-size:.85rem;font-weight:700}
html:not(.js) .spoiler{background:var(--y);border-style:solid}
html:not(.js) .spoiler .a{visibility:visible}
html:not(.js) .spoiler .hint{display:none}
.react{display:flex;gap:8px;margin-top:10px;flex-wrap:wrap}
.chip{border:2px solid var(--line);border-radius:999px;padding:0 .9em;background:var(--bg);font-size:.9rem;font-weight:700}

/* faq */
details{background:var(--white);border:2px solid var(--line);border-radius:18px;margin-bottom:12px;padding:0 20px}
summary{cursor:pointer;font-family:var(--head);font-weight:800;padding:14px 0;min-height:48px;list-style-position:inside}
details[open]{box-shadow:4px 4px 0 var(--p)}
details p{margin:0 0 1em}

.status .card h3{margin-bottom:.4em}
.contact{margin:56px 0 0;background:var(--ink);color:var(--white);padding:40px 0 32px}
.contact h2{color:var(--y)}
.contact code{background:#ffffff1f;padding:.1em .6em;border-radius:8px;font-size:1.05rem}
.contact .small{color:#d6d9e6}
footer{background:var(--ink);color:#d6d9e6;padding:0 0 32px;font-size:.9rem}

@media (max-width:860px){
  .hero-grid,.g2,.g3{grid-template-columns:1fr}
  .flow{grid-template-columns:1fr;gap:34px}
  .flow li:not(:last-child)::after{right:auto;left:50%;top:auto;bottom:-26px;transform:translateX(-50%) rotate(135deg)}
  .postbox svg{max-width:240px}
}
@media (max-width:480px){
  body{font-size:16.5px}
  .card,.steps{padding:18px 16px 10px}
  .steps li{font-size:.9rem}
  .mock{padding:12px}
  .ava{width:36px;height:36px}
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important;animation:none!important}}