/* sasai kudasai. hand-rolled css, no framework. */
:root {
  --bg: #faf7f0;
  --paper: #fffdf8;
  --ink: #2b2723;
  --muted: #8a8178;
  --line: #e6dfd2;
  --accent: #b8382b;
  --link: #9c2f24;
  --code: #f1ece1;
  --heat0: #ece5d8; --heat1: #e9b8a6; --heat2: #d97d66; --heat3: #b8382b;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1d1b19; --paper: #24211e; --ink: #e8e2d8; --muted: #9a9187; --line: #3a352f;
    --accent: #e0624f; --link: #f08a77; --code: #2f2b27;
    --heat0: #2f2b27; --heat1: #6b3a30; --heat2: #a64b3b; --heat3: #e0624f;
  }
}
* { box-sizing: border-box; }
html { background: var(--bg); }
body {
  margin: 0;
  color: var(--ink);
  font: 17px/1.65 -apple-system, "Segoe UI", Roboto, "Hiragino Sans", "Yu Gothic UI", "Noto Sans JP", sans-serif;
}
a { color: var(--link); text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:hover { color: var(--accent); }

.wrap { max-width: 62rem; margin: 0 auto; padding: 0 1.25rem; }
.narrow { max-width: 42rem; }

/* header */
.top { border-bottom: 1px solid var(--line); background: var(--paper); }
.top .wrap { display: flex; align-items: center; gap: .9rem; padding-top: 1rem; padding-bottom: 1rem; flex-wrap: wrap; }
.seal { flex: none; display: block; color: var(--accent); transform: rotate(-4deg); }
.brand { text-decoration: none; color: var(--ink); line-height: 1.2; }
.brand b { display: block; font-family: Georgia, "Hiragino Mincho ProN", "Yu Mincho", serif; font-size: 1.35rem; letter-spacing: .02em; }
.brand span { color: var(--muted); font-size: .85rem; }
.top nav { margin-left: auto; font-size: .95rem; }
.top nav a { color: var(--ink); text-decoration: none; margin-left: 1.1rem; }
.top nav a:hover, .top nav a.on { color: var(--accent); }
.top nav a.on { border-bottom: 2px solid var(--accent); }

main { padding: 2rem 0 3rem; }
h1, h2 { font-family: Georgia, "Hiragino Mincho ProN", "Yu Mincho", serif; font-weight: normal; line-height: 1.3; }
h1 { font-size: 1.9rem; margin: 0 0 .3rem; }
h2 { font-size: 1.3rem; margin-top: 2rem; }
.date, .meta { color: var(--muted); font-size: .85rem; }
.intro { font-size: 1.08rem; max-width: 36rem; margin-top: 0; }

/* home layout */
.home { display: grid; grid-template-columns: minmax(0, 1fr) 17rem; gap: 2.5rem; }
@media (max-width: 760px) { .home { grid-template-columns: 1fr; } .top nav { margin-left: 0; width: 100%; } .top nav a:first-child { margin-left: 0; } }

.postlist { list-style: none; padding: 0; margin: 1.5rem 0 0; }
.postlist li { padding: 1rem 0; border-top: 1px solid var(--line); }
.postlist li:first-child { border-top: 0; padding-top: 0; }
.postlist a.t { font-size: 1.15rem; text-decoration: none; color: var(--ink); font-weight: 600; }
.postlist a.t:hover { color: var(--accent); }
.postlist p { margin: .25rem 0 .3rem; color: var(--muted); font-size: .95rem; }
.tag { display: inline-block; font-size: .75rem; color: var(--muted); border: 1px solid var(--line); border-radius: 99px; padding: 0 .55rem; margin-right: .25rem; }

/* sidebar */
aside .box { background: var(--paper); border: 1px solid var(--line); border-radius: 6px; padding: .9rem 1rem; margin-bottom: 1.1rem; font-size: .92rem; }
aside h3 { margin: 0 0 .5rem; font-size: .8rem; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); font-weight: 600; }
aside ul { margin: 0; padding-left: 1.1rem; }
aside .big { font-size: 1.6rem; font-family: Georgia, serif; color: var(--accent); }
#heat { display: grid; grid-auto-flow: column; grid-template-rows: repeat(7, 10px); gap: 3px; margin: .3rem 0 .4rem; }
#heat i { width: 10px; height: 10px; border-radius: 2px; background: var(--heat0); }
#heat i.l1 { background: var(--heat1); } #heat i.l2 { background: var(--heat2); } #heat i.l3 { background: var(--heat3); }

/* article */
article p, article li { max-width: 40rem; }
code, kbd { background: var(--code); padding: 0 .3em; border-radius: 3px; font-size: .9em; }
.jp-ex { font-size: 1.2rem; font-family: "Hiragino Mincho ProN", "Yu Mincho", serif; }
blockquote { border-left: 3px solid var(--accent); margin-left: 0; padding-left: 1rem; color: var(--muted); }
table { border-collapse: collapse; margin: 1rem 0; background: var(--paper); }
td, th { border: 1px solid var(--line); padding: .35rem .7rem; vertical-align: top; text-align: left; }
th { font-size: .85rem; color: var(--muted); font-weight: 600; }
.back { display: inline-block; margin-top: 2rem; font-size: .9rem; }

/* kana quiz */
#quiz { background: var(--paper); border: 1px solid var(--line); border-radius: 8px; padding: 1.2rem 1.5rem; max-width: 26rem; text-align: center; }
#quiz .kana { font-size: 5rem; line-height: 1.2; margin: .2rem 0 .6rem; font-family: "Hiragino Mincho ProN", "Yu Mincho", serif; }
#quiz input { font: inherit; font-size: 1.1rem; padding: .35rem .6rem; width: 9rem; text-align: center; border: 1px solid var(--line); border-radius: 4px; background: var(--bg); color: var(--ink); }
#quiz .wrong { color: var(--accent); } #quiz .ok { color: #3f8a4a; }

footer.bottom { border-top: 1px solid var(--line); color: var(--muted); font-size: .8rem; }
footer.bottom .wrap { padding-top: 1rem; padding-bottom: 2rem; display: flex; justify-content: space-between; flex-wrap: wrap; gap: .5rem; }