:root {
  --bg: #f7f6f2; --card: #ffffff; --text: #22262b; --muted: #5d646d; --line: #d9d7cf;
  --accent: #0b5d5b; --accent-text: #ffffff; --warn: #a33a12; --partial: #8a6100; --ok: #1d6b3a;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #15181b; --card: #1e2226; --text: #e8e9e6; --muted: #a4abb2; --line: #363c42;
    --accent: #5cc4bd; --accent-text: #0d1f1e; --warn: #f0926b; --partial: #e0b95a; --ok: #74cf95;
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); line-height: 1.75; font-family: "Hiragino Sans", "Yu Gothic UI", "Meiryo", sans-serif; }
main { max-width: 640px; margin: 0 auto; padding: 32px 16px 96px; }
h1 { font-size: 1.7rem; line-height: 1.4; margin: 0 0 12px; }
h2 { font-size: 1.2rem; line-height: 1.5; margin: 0 0 8px; }
h3 { font-size: 1rem; margin: 0 0 4px; }
p { margin: 0 0 12px; }
ul { margin: 0 0 12px; padding-left: 1.3em; }
a { color: var(--accent); }
.lead, .muted { color: var(--muted); }
.small { font-size: .85rem; }
.section { margin-top: 32px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 8px; padding: 16px; margin: 0 0 12px; }
.cta { display: block; width: 100%; padding: 16px; border: 0; border-radius: 6px; background: var(--accent); color: var(--accent-text); font: inherit; font-weight: 700; text-align: center; text-decoration: none; cursor: pointer; }
.sticky { position: fixed; left: 0; right: 0; bottom: 0; padding: 10px 16px; background: var(--bg); border-top: 1px solid var(--line); }
.sticky .cta { max-width: 608px; margin: 0 auto; padding: 12px; }
.progress { height: 6px; background: var(--line); border-radius: 3px; overflow: hidden; margin-bottom: 8px; }
.progress div { height: 100%; background: var(--accent); }
.choices { display: grid; gap: 8px; margin-top: 16px; }
.choices button { padding: 14px; border: 1px solid var(--line); border-radius: 6px; background: var(--card); color: var(--text); font: inherit; text-align: left; cursor: pointer; }
.choices button:hover, .choices button:focus-visible { border-color: var(--accent); outline: none; box-shadow: inset 0 0 0 1px var(--accent); }
.back { background: none; border: 0; padding: 8px 0; margin-top: 8px; color: var(--muted); font: inherit; text-decoration: underline; cursor: pointer; }
.score { font-size: 1.4rem; font-weight: 700; line-height: 1.4; }
.price { font-size: 1.1rem; font-weight: 700; margin-bottom: 4px; }
.tag { font-size: .8rem; font-weight: 700; }
.tag.no { color: var(--warn); }
.tag.partial { color: var(--partial); }
footer { margin-top: 40px; padding-top: 16px; border-top: 1px solid var(--line); color: var(--muted); font-size: .85rem; }