:root {
  --ink: #1b1b1a;
  --ink-soft: #3f3e3a;
  --ink-2: #5a5955;
  --ink-3: #9a9893;
  --paper: #faf9f6;
  --card: #ffffff;
  --bubble: #f3f1ea;
  --line: #e8e6e0;
  --accent: #29523a;
  --font: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Yu Gothic", sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}
* { box-sizing: border-box; }
html { background: var(--paper); color: var(--ink); font-family: var(--font); -webkit-font-smoothing: antialiased; }
body { margin: 0; line-height: 1.7; font-size: 16px; }
a { color: inherit; text-decoration: none; }

.top { display: flex; align-items: baseline; justify-content: space-between; max-width: 760px; margin: 0 auto; padding: 40px 20px 8px; }
.top__brand { font-family: var(--mono); font-size: 22px; font-weight: 600; letter-spacing: -.01em; color: var(--ink-soft); }
.top__dot { color: var(--ink-3); }
.top__nav { font-family: var(--mono); font-size: 13px; }
.top__nav a { color: var(--ink-3); }
.top__nav a:hover { color: var(--ink); }

/* usutaku 本人の顔写真 + 吹き出しの導入。「彼が薦めている」というこのサイトの肝を、
   最初の一目で伝える */
.hero { display: flex; align-items: flex-start; gap: 16px; max-width: 760px; margin: 0 auto; padding: 20px 20px 8px; }
.hero__face { width: 76px; height: 76px; border-radius: 50%; object-fit: cover; flex: none; background: #ecebe6; box-shadow: 0 2px 8px rgba(0,0,0,.14); }
.hero__bubble { position: relative; background: var(--card); border-radius: 18px; padding: 16px 20px; box-shadow: 0 1px 2px rgba(0,0,0,.05), 0 14px 32px -20px rgba(0,0,0,.3); }
.hero__bubble::before {
  content: ''; position: absolute; left: -8px; top: 30px;
  border-top: 8px solid transparent; border-bottom: 8px solid transparent; border-right: 9px solid var(--card);
}
.hero__me { margin: 0; flex: none; display: flex; flex-direction: column; align-items: center; gap: 6px; }
.hero__name { font-family: var(--mono); font-size: 12px; color: var(--ink-2); }
.hero__lead { margin: 0; font-size: 17px; font-weight: 600; line-height: 1.6; color: var(--ink-soft); }

.wrap { max-width: 760px; margin: 0 auto; padding: 20px 20px 80px; }
.books { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 16px; }
.book {
  display: grid; grid-template-columns: 132px 1fr; gap: 24px;
  padding: 24px; background: var(--card); border: 1px solid var(--line); border-radius: 18px;
  box-shadow: 0 1px 2px rgba(0,0,0,.03), 0 16px 36px -28px rgba(0,0,0,.35);
  transition: transform .15s ease, box-shadow .15s ease;
}
.book:hover { transform: translateY(-2px); box-shadow: 0 1px 2px rgba(0,0,0,.04), 0 22px 40px -24px rgba(0,0,0,.3); }
.book__cover { display: block; }
/* 書影は切り抜かずに全体を見せる (判型が本ごとに違うため) */
.book__img { display: block; width: 132px; height: auto; border-radius: 4px; background: #ecebe6; box-shadow: 0 1px 2px rgba(0,0,0,.08), 0 8px 24px -12px rgba(0,0,0,.25); }
.book__img--none { display: block; aspect-ratio: 2 / 3; }
.book__body { min-width: 0; display: flex; flex-direction: column; gap: 12px; }
.book__title { margin: 0; font-size: 18px; font-weight: 600; line-height: 1.5; }

/* 本ごとの「usutakuの一言」。小さな顔写真 + 吹き出しで、本人が言っているように見せる */
.book__say { display: flex; align-items: flex-start; gap: 10px; }
.book__face { width: 32px; height: 32px; border-radius: 50%; object-fit: cover; flex: none; margin-top: 3px; background: #ecebe6; }
.book__bubble {
  position: relative; margin: 0; flex: 1; min-width: 0;
  background: var(--bubble); border-radius: 4px 14px 14px 14px; padding: 10px 14px;
  color: var(--ink-2); font-size: 15px; overflow-wrap: anywhere;
}

.book__meta { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-top: auto; padding-top: 4px; }
.book__date { font-family: var(--mono); font-size: 12px; color: var(--ink-3); }
.book__link { display: inline-flex; align-items: center; gap: 6px; font-size: 14px; font-weight: 600; color: var(--accent); }
.book__link:hover { text-decoration: underline; text-underline-offset: 4px; }
.book__icon { flex: none; }
.empty { color: var(--ink-3); margin-top: 40px; }

.foot { max-width: 760px; margin: 0 auto; padding: 0 20px 48px; font-family: var(--mono); font-size: 12px; }
.foot a { color: var(--ink-3); }

@media (max-width: 560px) {
  .top { padding-top: 28px; }
  .top__brand { font-size: 19px; }
  .hero { gap: 12px; padding-top: 16px; }
  .hero__face { width: 60px; height: 60px; }
  .hero__bubble { padding: 13px 16px; }
  .hero__bubble::before { top: 22px; }
  .hero__lead { font-size: 15.5px; }
  .book { grid-template-columns: 1fr; gap: 14px; padding: 18px; }
  .book__img { width: 120px; }
  .book__title { font-size: 17px; }
  .book__bubble { font-size: 14px; }
}