:root{
  --pink:#e5007d;
  --pink-dark:#b80063;
  --ink:#1c1c1f;
  --ink-soft:#4a4a52;
  --line:#e8e3e6;
  --bg:#fbf8f9;
  --radius:14px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  line-height:1.6;font-size:16px;
}
.wrap{max-width:820px;margin:0 auto;padding:0 16px}
a{color:var(--pink-dark)}

.topbar{position:sticky;top:0;z-index:10;background:rgba(255,255,255,.95);border-bottom:1px solid var(--line)}
.topbar .wrap{display:flex;align-items:center;justify-content:space-between;gap:14px;padding-top:10px;padding-bottom:10px}
.topbar .brand{font-weight:800;font-size:17px;color:var(--ink);text-decoration:none;letter-spacing:-.01em}
.topbar .brand span{color:var(--pink)}
.topbar nav{display:flex;gap:14px;flex-wrap:wrap}
.topbar nav a{color:var(--ink-soft);text-decoration:none;font-weight:600;font-size:14px}
.topbar nav a:hover{color:var(--pink-dark)}

section.page{padding:30px 0 40px}
h1{font-size:clamp(24px,5vw,34px);line-height:1.2;margin:0 0 6px;letter-spacing:-.02em}
.stamp{color:var(--ink-soft);font-size:14px;margin:0 0 22px}
h2{font-size:19px;margin:26px 0 8px}
p{margin:0 0 12px;color:var(--ink-soft)}
ul{margin:0 0 12px;padding-left:20px;color:var(--ink-soft)}
li{margin-bottom:6px}
strong{color:var(--ink)}

.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:16px;margin:0 0 8px}
.card h2{margin-top:0}
.bigmail{font-size:clamp(17px,4vw,22px);font-weight:700;word-break:break-all}
.plainmail{font-size:14px;color:var(--ink-soft)}
.plainmail b{color:var(--ink);word-break:break-all}

footer{background:#fff;border-top:1px solid var(--line);padding:22px 0 34px;font-size:13px}
footer p{color:var(--ink-soft);margin:0 0 8px}
footer .links a{color:var(--ink-soft);text-decoration:none}
footer .links a:hover{color:var(--pink-dark)}

@media (max-width:520px){
  .topbar .wrap{flex-direction:column;align-items:flex-start;gap:6px}
  .topbar nav{gap:4px 14px}
  .topbar nav a{padding:8px 0;min-height:24px;display:inline-flex;align-items:center}
  footer .links a{padding:8px 0;display:inline-block}
  .topbar .brand{padding:6px 0;display:inline-block}
  .page a{overflow-wrap:anywhere}
}