:root{
  --bg:#faf8f5; --ink:#2d2a26; --muted:#8a8178; --line:#e8e0d6;
  --card:#fffdfa; --accent:#a4571f;
  --dog:#b9b3c4; --dogEar:#2b2730; --dogMuzzle:#e6e2ea;
}
@media (prefers-color-scheme: dark){
  :root{ --bg:#171513; --ink:#e8e2d9; --muted:#9a9188; --line:#2c2823; --card:#1e1b18; --accent:#d08a45;
         --dog:#9a94a6; --dogEar:#221f27; --dogMuzzle:#cdc8d4; }
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);
     font:17px/1.75 Georgia,"Times New Roman",serif}
.wrap{max-width:660px;margin:0 auto;padding:40px 20px 72px}

nav{display:flex;flex-wrap:wrap;gap:6px 18px;align-items:baseline;
    padding-bottom:16px;margin-bottom:28px;border-bottom:1px solid var(--line)}
nav a{color:var(--muted);text-decoration:none;font-size:15px}
nav a:hover{color:var(--accent)}
nav a.home{color:var(--ink);font-weight:bold;font-size:17px;margin-right:4px}

header{margin-bottom:36px}
.dog{display:block;margin-bottom:16px}
h1{font-size:32px;margin:0 0 6px;letter-spacing:-.5px;line-height:1.2}
.sub{color:var(--muted);font-size:15px}
h2{font-size:21px;margin:36px 0 10px;line-height:1.35}
h3{font-size:18px;margin:0 0 12px}
p{margin:0 0 14px}
a{color:var(--accent)}
.note{color:var(--muted);font-size:15px;font-style:italic}
.card{background:var(--card);border:1px solid var(--line);border-radius:10px;
      padding:20px 22px;margin:28px 0}
ul{margin:0 0 14px;padding-left:22px}
li{margin-bottom:7px}
.scale{list-style:none;padding:0;margin:0}
.scale li{display:flex;gap:12px;align-items:baseline;margin-bottom:10px}
.scale b{color:var(--accent);min-width:26px;font-size:19px}

.toc{list-style:none;padding:0;margin:0}
.toc li{margin-bottom:18px}
.toc a{font-size:19px;text-decoration:none;font-weight:bold}
.toc a:hover{text-decoration:underline}
.toc span{display:block;color:var(--muted);font-size:15px;margin-top:2px}

button{font:inherit;font-size:15px;background:var(--accent);color:#fff;border:0;
       border-radius:7px;padding:9px 16px;cursor:pointer}
button:hover{opacity:.9}
#excuse{margin-top:14px;font-size:17px;min-height:27px}
.q{font-weight:bold;margin-bottom:4px}
.next{margin-top:40px;padding-top:18px;border-top:1px solid var(--line);font-size:15px}
footer{margin-top:48px;padding-top:20px;border-top:1px solid var(--line);
       color:var(--muted);font-size:14px}