:root {
  --bg: #f2f6f3;
  --ink: #14221c;
  --muted: #4d6158;
  --accent: #0f6e56;
  --accent-2: #9a3412;
  --card: #fbfefc;
  --line: #d5e2da;
  --mark: linear-gradient(90deg,#0f6e56 50%,#d97706 50%);
  --shadow: 0 16px 40px rgba(28, 25, 21, 0.06);
  --serif: "Iowan Old Style", Palatino, "Palatino Linotype", Georgia, serif;
  --sans: "Segoe UI", "Avenir Next", "PingFang SC", "Noto Sans", sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background:
    radial-gradient(1200px 420px at 90% -10%, color-mix(in srgb, var(--accent) 12%, transparent), transparent 60%),
    var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1.05rem;
  line-height: 1.6;
}
a { color: var(--accent); text-underline-offset: 0.16em; }
a:hover { color: var(--accent-2); }
.skip {
  position: absolute; left: 1rem; top: -4rem; background: var(--ink); color: white; padding: 0.4rem 0.7rem;
}
.skip:focus { top: 0.6rem; }
.wrap { width: min(1080px, calc(100% - 2rem)); margin: 0 auto; }
.narrow { width: min(740px, calc(100% - 2rem)); margin: 0 auto; }
.site-head {
  position: sticky; top: 0; z-index: 5;
  background: color-mix(in srgb, var(--bg) 88%, white);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
}
.head-row { display: flex; align-items: center; gap: 1rem; min-height: 4.4rem; }
.brand { display: flex; gap: 0.7rem; align-items: center; color: inherit; text-decoration: none; }
.mark { width: 1.7rem; height: 1.7rem; border-radius: 0.35rem; background: var(--mark); display: inline-block; }
.brand strong { display: block; font-family: var(--serif); font-size: 1.25rem; letter-spacing: -0.02em; }
.brand small { display: block; color: var(--muted); font-size: 0.75rem; }
.nav-check, .nav-btn { display: none; }
.site-nav { margin-left: auto; display: flex; gap: 0.3rem 0.9rem; flex-wrap: wrap; }
.site-nav a { color: var(--ink); text-decoration: none; font-size: 0.95rem; }
.site-nav a.is-current { color: var(--accent); box-shadow: inset 0 -2px 0 var(--accent); }
main { padding: 2.2rem 0 4rem; }
.kicker { margin: 0 0 0.4rem; color: var(--accent); font-size: 0.82rem; letter-spacing: 0.12em; text-transform: uppercase; }
h1, h2, h3 { font-family: var(--serif); letter-spacing: -0.03em; line-height: 1.15; }
h1 { font-size: clamp(2.1rem, 4vw, 3.6rem); margin: 0 0 0.8rem; }
h2 { font-size: 1.7rem; margin: 2rem 0 0.6rem; }
h3 { font-size: 1.25rem; margin: 1.4rem 0 0.4rem; }
.lede { font-size: 1.18rem; color: var(--muted); max-width: 42rem; }
.prose p, .hero p { max-width: 42rem; }
.note { border-left: 4px solid var(--accent); background: var(--card); padding: 0.8rem 1rem; margin: 1.2rem 0; box-shadow: var(--shadow); }
.note p { margin: 0; }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 0.9rem; margin: 1.4rem 0 0.4rem; }
.card {
  display: block; background: var(--card); border: 1px solid var(--line); border-radius: 14px;
  padding: 1rem 1rem 0.9rem; text-decoration: none; color: inherit; box-shadow: var(--shadow);
}
.card:hover { border-color: var(--accent); }
.card strong { display: block; font-family: var(--serif); font-size: 1.25rem; margin-bottom: 0.25rem; }
.card span { color: var(--muted); font-size: 0.95rem; }
.hero { padding: 0.4rem 0 0.2rem; }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 0.8rem; margin: 1rem 0; }
.col { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 1rem; }
.col.a { box-shadow: inset 4px 0 0 var(--accent); }
.col.b { box-shadow: inset 4px 0 0 var(--accent-2); }
.rank-list { list-style: none; padding: 0; margin: 1rem 0; }
.rank-list li {
  display: grid; grid-template-columns: auto 1fr; gap: 0.8rem; align-items: start;
  background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 0.9rem 1rem; margin: 0 0 0.7rem;
}
.rank-no { font-family: var(--serif); font-size: 1.8rem; color: var(--accent); line-height: 1; }
.link-list { list-style: none; padding: 0; }
.link-list li { display: flex; justify-content: space-between; gap: 1rem; border-bottom: 1px solid var(--line); padding: 0.7rem 0; }
.link-list span { color: var(--muted); }
.faq details { border-bottom: 1px solid var(--line); padding: 0.6rem 0; }
.faq summary { cursor: pointer; font-weight: 650; }
.compare-form { display: flex; flex-wrap: wrap; gap: 0.6rem; align-items: end; background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 1rem; }
.compare-form label { display: grid; gap: 0.25rem; font-size: 0.85rem; color: var(--muted); }
select, .button {
  font: inherit; border-radius: 999px; border: 1px solid var(--line); background: white; color: var(--ink); padding: 0.55rem 0.9rem;
}
.button.primary { background: var(--accent); color: white; border-color: var(--accent); text-decoration: none; display: inline-block; }
.button.primary:hover { background: var(--accent-2); color: white; }
.msg { min-height: 1.4rem; color: var(--accent); }
.site-foot { border-top: 1px solid var(--line); padding: 1.6rem 0 2.2rem; color: var(--muted); font-size: 0.92rem; }
.foot-grid { display: grid; grid-template-columns: 1.4fr 1fr 1.2fr; gap: 1rem; }
.site-foot a { color: var(--ink); }
.site-foot nav { display: flex; flex-direction: column; gap: 0.25rem; }
@media (max-width: 800px) {
  .head-row { flex-wrap: wrap; }
  .nav-btn { display: inline-flex; margin-left: auto; border: 1px solid var(--line); border-radius: 999px; padding: 0.3rem 0.7rem; }
  .site-nav { display: none; width: 100%; flex-basis: 100%; margin: 0 0 0.6rem; padding-top: 0.2rem; border-top: 1px solid var(--line); }
  .nav-check:checked ~ .site-nav { display: grid; }
  .split, .foot-grid { grid-template-columns: 1fr; }
  .link-list li { flex-direction: column; gap: 0.15rem; }
}