:root {
  --ink: #1a1d21;
  --muted: #5b6470;
  --line: #d9dee5;
  --bg: #ffffff;
  --panel: #f5f7fa;
  --accent: #0b5cad;
  --accent-ink: #ffffff;
  --warn-bg: #fff7e6;
  --warn-line: #e3b341;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Noto Sans JP",
    "Yu Gothic", Meiryo, system-ui, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.75;
  font-size: 16px;
}

a { color: var(--accent); }
a:hover { text-decoration: none; }

.site-header {
  border-bottom: 3px solid var(--ink);
  padding: 1rem 1rem 0.75rem;
}
.site-header .brand {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--ink);
  text-decoration: none;
}
.site-header .tagline {
  color: var(--muted);
  font-size: 0.9rem;
  margin-top: 0.15rem;
}
.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.25rem;
  margin-top: 0.6rem;
  font-size: 0.95rem;
}
.site-nav a { text-decoration: none; font-weight: 600; }
.site-nav a[aria-current="page"] { color: var(--ink); border-bottom: 2px solid var(--ink); }

main {
  max-width: 880px;
  margin: 0 auto;
  padding: 1.25rem 1rem 3rem;
}

h1 { font-size: 1.7rem; line-height: 1.4; margin: 0.5rem 0 1rem; }
h2 { font-size: 1.25rem; margin: 2rem 0 0.6rem; border-left: 5px solid var(--ink); padding-left: 0.6rem; }
h3 { font-size: 1.05rem; margin: 1.4rem 0 0.4rem; }

.lead { font-size: 1.05rem; }
.meta { color: var(--muted); font-size: 0.88rem; }

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 1rem 1.1rem;
  margin: 1rem 0;
}

.notice {
  background: var(--warn-bg);
  border: 1px solid var(--warn-line);
  border-radius: 8px;
  padding: 0.9rem 1.1rem;
  margin: 1rem 0;
}

.tool {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 1rem 1.1rem;
  margin: 1.25rem 0;
}
.tool h3 { margin-top: 0; font-size: 1.15rem; }
.tool .vendor { color: var(--muted); font-size: 0.9rem; }

table {
  width: 100%;
  border-collapse: collapse;
  margin: 0.8rem 0;
  font-size: 0.94rem;
  display: block;
  overflow-x: auto;
}
th, td {
  border: 1px solid var(--line);
  padding: 0.55rem 0.7rem;
  text-align: left;
  vertical-align: top;
  min-width: 7rem;
}
th { background: var(--panel); white-space: nowrap; }
td.price { white-space: nowrap; font-weight: 600; }

.source {
  font-size: 0.88rem;
  color: var(--muted);
  border-top: 1px dashed var(--line);
  padding-top: 0.5rem;
  margin-top: 0.6rem;
  word-break: break-all;
}

ul.compact li, ol.compact li { margin: 0.25rem 0; }

.site-footer {
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.88rem;
  padding: 1.25rem 1rem 2rem;
  max-width: 880px;
  margin: 0 auto;
}
.site-footer h2 { font-size: 1rem; border: none; padding: 0; margin: 0 0 0.4rem; color: var(--ink); }

@media (max-width: 600px) {
  body { font-size: 15px; }
  h1 { font-size: 1.4rem; }
  .site-header .brand { font-size: 1.15rem; }
  main { padding: 1rem 0.8rem 2.5rem; }
}

/* --- site2 additions: simulator / forms --- */
.sim-form {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 1rem 1.1rem;
  margin: 1rem 0;
}
.sim-form label { font-weight: 600; display: block; margin: 0.7rem 0 0.3rem; }
.sim-form label:first-child { margin-top: 0; }
.sim-form select {
  font-size: 1rem;
  padding: 0.45rem 0.6rem;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  min-width: 16rem;
  max-width: 100%;
}
.segmented { display: flex; flex-wrap: wrap; gap: 0.5rem; margin: 0.3rem 0 0.7rem; }
.segmented label {
  display: inline-block; margin: 0; font-weight: 600; cursor: pointer;
  border: 1px solid var(--line); border-radius: 999px; padding: 0.3rem 0.9rem; background: #fff;
}
.segmented input { margin-right: 0.35rem; }
td.total, td.rank { font-weight: 700; white-space: nowrap; }
td.rank { text-align: center; }
tr.best td { background: #eef6ee; }
.formula {
  background: var(--panel); border: 1px solid var(--line); border-radius: 8px;
  padding: 0.9rem 1.1rem; margin: 1rem 0; font-size: 0.95rem;
}