:root{
  --bg1:#ffffff;
  --bg2:#ffe7cc;
  --card:rgba(255,255,255,.72);
  --line:rgba(255,166,77,.35);
  --shadow:0 14px 40px rgba(0,0,0,.10);
  --muted:#6b7280;
  --text:#111827;
  --accent:#ff8a2b;
  --accent2:#ffb36b;
  --radius:18px;
  --focus:0 0 0 3px rgba(255,138,43,.28);
  --maxw:900px;
  --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  --sans: system-ui, -apple-system, Segoe UI, Roboto, "Helvetica Neue", Arial, "Noto Sans JP", "Apple Color Emoji","Segoe UI Emoji";
}
*{ box-sizing:border-box; }
html,body{ height:100%; }
body{
  margin:0;
  font-family:var(--sans);
  color:var(--text);
  background: linear-gradient(180deg, var(--bg1), var(--bg2));
}
a{ color:inherit; }
a:focus{ outline:none; box-shadow:var(--focus); border-radius:10px; }
.wrap{ max-width:var(--maxw); margin:0 auto; padding:18px 14px 70px; }
.header{
  display:flex; align-items:center; gap:14px;
  padding:14px 14px;
  margin:8px 0 14px;
}
.brand{
  display:flex; align-items:center; gap:10px;
  text-decoration:none;
}
.brand-title{
  font-weight:800; letter-spacing:.2px;
  font-size:18px; margin:0;
}
.brand-sub{ margin:2px 0 0; color:var(--muted); font-size:13px; }
.card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  backdrop-filter: blur(10px);
}
.hero{ padding:18px; }
.badge{
  display:inline-flex; align-items:center; gap:8px;
  font-size:12px; color:var(--muted);
  padding:6px 10px; border:1px solid var(--line); border-radius:999px;
  background:rgba(255,255,255,.55);
}
.h1{ margin:10px 0 6px; font-size:22px; line-height:1.25; }
.lead{ margin:0; color:var(--muted); line-height:1.7; }
.grid{ display:grid; grid-template-columns:1fr; gap:14px; margin-top:14px; }
@media (min-width: 900px){
  .grid{ grid-template-columns: 1.12fr .88fr; }
}
.section{ padding:16px; }
.h2{ margin:0 0 8px; font-size:16px; }
.kv{
  display:flex; flex-wrap:wrap; gap:8px; margin-top:10px;
}
.tag{
  font-size:12px; padding:6px 10px;
  border-radius:999px; border:1px solid var(--line);
  background:rgba(255,255,255,.55);
}
.ol, .ul{ margin:10px 0 0; padding-left:18px; }
.ul li, .ol li{ line-height:1.75; margin:6px 0; }
.hr{ height:1px; background:rgba(255,166,77,.25); border:0; margin:14px 0; }
.mikan{
  width:88px; height:88px; flex:0 0 auto;
  filter: drop-shadow(0 10px 18px rgba(0,0,0,.12));
  animation: mikanFloat 6s ease-in-out infinite;
}
@keyframes mikanFloat{
  0%,100%{ transform: translateY(0) rotate(-1deg); }
  50%{ transform: translateY(-6px) rotate(1deg); }
}
.toolbox{
  display:grid; gap:10px;
}
.input{
  width:100%;
  padding:10px 12px;
  border-radius:14px;
  border:1px solid rgba(255,166,77,.35);
  background:rgba(255,255,255,.72);
  font-family:var(--sans);
}
.input:focus{ outline:none; box-shadow:var(--focus); }
.btn{
  appearance:none; border:1px solid rgba(255,138,43,.35);
  background: linear-gradient(180deg, rgba(255,255,255,.8), rgba(255,255,255,.55));
  border-radius:14px; padding:10px 12px;
  cursor:pointer;
  font-weight:700;
}
.btn:hover{ transform: translateY(-1px); }
.mono{ font-family:var(--mono); font-size:12px; white-space:pre-wrap; word-break:break-word; }
.note{ color:var(--muted); font-size:12px; line-height:1.6; }
.refs a{ color:#0f172a; text-decoration:underline; text-decoration-thickness:1px; }
.ad-slot{
  border:1px dashed rgba(255,138,43,.38);
  border-radius:16px;
  padding:14px;
  color:var(--muted);
  background:rgba(255,255,255,.55);
}