:root {
  --bg: #f6f4ef;
  --card: #ffffff;
  --ink: #1d2422;
  --muted: #5d6764;
  --line: #dcd8cf;
  --accent: #1f6f5c;
  --accent-ink: #ffffff;
  --soft: #e7f1ec;
  --warn: #8a5a00;
  --suumo: #3c9b3c;
  --homes: #ed6d00;
  --athome: #d7000f;
  --radius: 14px;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #141816; --card: #1d2320; --ink: #e8ece9; --muted: #a3ada9; --line: #33403b;
    --accent: #5cc3a6; --accent-ink: #0d1412; --soft: #1f312b; --warn: #f0b860;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 16px/1.6 system-ui, -apple-system, "Segoe UI", "Hiragino Sans", "Yu Gothic UI", "Noto Sans JP", sans-serif;
}
.wrap { max-width: 980px; margin: 0 auto; padding: 0 16px; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }

.top { border-bottom: 1px solid var(--line); background: var(--card); }
.top-inner { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 56px; }
.brand { display: flex; align-items: center; gap: 8px; font-weight: 700; color: var(--ink); text-decoration: none; }
.brand svg { width: 24px; height: 24px; fill: var(--accent); }
.lang { display: flex; border: 1px solid var(--line); border-radius: 999px; overflow: hidden; }
.lang button { border: 0; background: transparent; color: var(--muted); padding: 6px 12px; font: inherit; font-size: 14px; cursor: pointer; }
.lang button[aria-pressed="true"] { background: var(--accent); color: var(--accent-ink); }

.hero { padding: 36px 0 20px; }
h1 { font-size: clamp(24px, 4vw, 34px); line-height: 1.25; margin: 0 0 10px; letter-spacing: -0.01em; }
.lead { color: var(--muted); margin: 0 0 20px; max-width: 46em; }
.ask { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 12px; box-shadow: 0 1px 2px rgb(0 0 0 / 4%); }
.ask textarea {
  width: 100%; border: 0; resize: vertical; background: transparent; color: var(--ink);
  font: inherit; font-size: 17px; padding: 6px 4px; outline: none; min-height: 72px;
}
.ask:focus-within { border-color: var(--accent); }
.ask-row { display: flex; gap: 12px; align-items: flex-end; justify-content: space-between; flex-wrap: wrap; }
.examples { display: flex; flex-wrap: wrap; gap: 6px; flex: 1 1 400px; }
.ex { border: 1px solid var(--line); background: var(--bg); color: var(--muted); border-radius: 999px; padding: 4px 10px; font: inherit; font-size: 13px; cursor: pointer; text-align: left; }
.ex:hover { color: var(--ink); border-color: var(--accent); }
.go { background: var(--accent); color: var(--accent-ink); border: 0; border-radius: 10px; padding: 10px 26px; font: inherit; font-weight: 700; cursor: pointer; }
.go:hover { filter: brightness(1.08); }

.result { padding-bottom: 40px; }
.panel { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; }
h2 { font-size: 18px; margin: 0 0 14px; }
.fields { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 14px 16px; }
.f { display: flex; flex-direction: column; gap: 4px; font-size: 13px; color: var(--muted); }
.f.wide { grid-column: 1 / -1; }
.f[hidden] { display: none; }
.f select, .f input {
  font: inherit; font-size: 15px; color: var(--ink); background: var(--bg);
  border: 1px solid var(--line); border-radius: 8px; padding: 8px 10px; width: 100%;
}
.unit { display: flex; align-items: center; gap: 6px; }
.unit em { font-style: normal; white-space: nowrap; }
.conv { color: var(--accent); min-height: 1.2em; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 6px; }
.chip { display: inline-flex; align-items: center; gap: 4px; background: var(--soft); color: var(--ink); border-radius: 999px; padding: 4px 6px 4px 12px; font-size: 14px; }
.chip button { border: 0; background: transparent; color: var(--muted); font-size: 16px; cursor: pointer; line-height: 1; padding: 0 4px; }
.warn { color: var(--warn); margin: 0; font-size: 14px; }
.f.wide select { max-width: 360px; }

.tip { margin: 16px 0; padding: 12px 14px; border-left: 4px solid var(--accent); background: var(--soft); border-radius: 8px; font-size: 14px; }

.sites { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 14px; }
.site { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; border-top: 5px solid var(--c); }
.site.suumo { --c: var(--suumo); }
.site.homes { --c: var(--homes); }
.site.athome { --c: var(--athome); }
.site h3 { margin: 0; font-size: 20px; }
.note { margin: 2px 0 12px; color: var(--muted); font-size: 13px; }
.open { display: block; text-align: center; background: var(--c); color: #fff; text-decoration: none; font-weight: 700; padding: 10px 12px; border-radius: 10px; margin-top: 10px; }
.open:hover { filter: brightness(1.08); }
.applied, .skipped { font-size: 13px; margin: 6px 0 0; color: var(--muted); }
.skipped { color: var(--warn); }

.foot { border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; padding: 20px 0 40px; }