/* Subpages: same tokens as the practice app, reading layout ~68 characters wide. */
:root{
  --bg:#EAF2FB; --surface:#FFFFFF; --ink:#14284B; --muted:#5B6C88; --line:#CCD9EA;
  --accent:#FFC531; --accent-ink:#3A2A00; --ok:#1E9E6A; --miss:#E5484D;
  --font-en:"Fredoka","Arial Rounded MT Bold","Helvetica Neue",sans-serif;
  --font-jp:"M PLUS Rounded 1c","Hiragino Maru Gothic ProN","Hiragino Sans",sans-serif;
  color-scheme:light;
}
@media (prefers-color-scheme: dark){:root{
  --bg:#0E1A2E; --surface:#16253F; --ink:#E6EEF9; --muted:#93A4C0; --line:#2A3D5E;
  --accent:#FFCF4D; --accent-ink:#2A1E00; --ok:#3DD39A; --miss:#FF6B70;
  color-scheme:dark}}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--font-jp);font-size:16px;line-height:1.9;
  padding-left:max(16px, env(safe-area-inset-left, 0px));padding-right:max(16px, env(safe-area-inset-right, 0px));padding-block:16px 32px}
a{color:var(--ink)}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid var(--accent);outline-offset:2px}

.site-head{max-width:860px;margin:0 auto 24px;display:flex;flex-wrap:wrap;gap:10px 20px;align-items:center;justify-content:space-between}
.brand{display:flex;gap:10px;align-items:center;text-decoration:none;font-weight:800;font-size:17px}
.mark{width:36px;height:36px;border-radius:10px;background:var(--ink);color:var(--bg);display:grid;place-items:center;font-family:var(--font-en);font-weight:600;font-size:16px;box-shadow:0 3px 0 var(--accent)}
.site-head nav{display:flex;flex-wrap:wrap;gap:4px}
.site-head nav a{text-decoration:none;font-size:13px;font-weight:700;padding:6px 12px;border-radius:999px;color:var(--muted)}
.site-head nav a[aria-current]{background:var(--ink);color:var(--bg)}
.site-head nav a:first-child{background:var(--accent);color:var(--accent-ink)}

.page{max-width:760px;margin:0 auto;background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:28px clamp(18px,5vw,48px) 36px}
.page > *{max-width:68ch}
.eyebrow{margin:0;font-size:12px;font-weight:800;color:var(--muted);letter-spacing:.08em}
h1{font-size:clamp(22px,4.4vw,30px);line-height:1.4;margin:4px 0 16px;text-wrap:balance}
h2{font-size:19px;line-height:1.5;margin:32px 0 8px;padding-top:16px;border-top:1px solid var(--line);text-wrap:balance}
h3{font-size:16px;margin:20px 0 4px}
p,li{margin:0 0 12px}
ul,ol{padding-left:1.3em}
.lead{font-size:17px;color:var(--muted)}
.note{background:var(--bg);border-radius:12px;padding:12px 16px;font-size:14px}
.en{font-family:var(--font-en);font-weight:600}
kbd{font-family:var(--font-en);font-size:.9em;border:1px solid var(--line);border-bottom-width:3px;border-radius:6px;padding:0 6px;background:var(--bg)}
table{width:100%;border-collapse:collapse;font-size:15px;margin:8px 0 16px}
th,td{text-align:left;vertical-align:top;padding:10px 8px;border-bottom:1px solid var(--line)}
th{width:9em;color:var(--muted);font-weight:700;font-size:13px}
.cta{display:inline-block;margin-top:8px;background:var(--ink);color:var(--bg);text-decoration:none;font-weight:800;padding:10px 20px;border-radius:999px}
.cards{list-style:none;padding:0;display:grid;gap:12px}
.cards li{margin:0}
.cards a{display:block;text-decoration:none;border:1px solid var(--line);border-radius:14px;padding:14px 16px}
.cards a:hover{border-color:var(--ink)}
.cards b{display:block;font-size:16px;line-height:1.5}
.cards span{font-size:13px;color:var(--muted)}
.updated{font-size:12px;color:var(--muted)}

.form-embed{margin:16px 0 8px;border:1px solid var(--line);border-radius:14px;overflow:hidden;background:#fff}
.form-embed iframe{display:block;width:100%;height:1100px;border:0}

.ad-slot{margin-top:28px;border-top:1px solid var(--line);padding-top:12px}
.ad-label{font-size:11px;color:var(--muted);font-weight:700;letter-spacing:.06em}

.site-foot{max-width:860px;margin:24px auto 0;display:flex;flex-direction:column;align-items:center;gap:8px;font-size:12px;color:var(--muted);text-align:center}
.site-foot nav{display:flex;flex-wrap:wrap;justify-content:center;gap:6px 16px}
.site-foot a{text-decoration:none;font-weight:700}
.site-foot a:hover{text-decoration:underline}
.site-foot p{margin:0}