:root{--bg:#f6faff;--surface:#fff;--fg:#1f3240;--muted:#5b6d7a;--line:#dbe6ee;--accent:#0b8a79;--accent-fill:#12b5a0;--accent-soft:#dcf5ef;--amber:#a86b00;--amber-soft:#fff3cf;--sun:#ffc83d;--coral:#ff7a66;--hero:#e6f3ff;--font-display:"Dela Gothic One", "Hiragino Sans", "Yu Gothic", sans-serif;--font-body:"Zen Kaku Gothic New", "Hiragino Sans", "Yu Gothic", "Meiryo", sans-serif;--font-mono:"IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, monospace}@media (prefers-color-scheme:dark){:root:not([data-theme=light]){--bg:#101820;--surface:#182430;--fg:#e8f0f5;--muted:#9fb1bd;--line:#2b3a47;--accent:#45d1bb;--accent-fill:#2fbfa8;--accent-soft:#173d38;--amber:#ffcf5c;--amber-soft:#3b3016;--sun:#ffc83d;--coral:#ff8a78;--hero:#172a3a;color-scheme:dark}}:root[data-theme=dark]{--bg:#101820;--surface:#182430;--fg:#e8f0f5;--muted:#9fb1bd;--line:#2b3a47;--accent:#45d1bb;--accent-fill:#2fbfa8;--accent-soft:#173d38;--amber:#ffcf5c;--amber-soft:#3b3016;--sun:#ffc83d;--coral:#ff8a78;--hero:#172a3a;color-scheme:dark}*{box-sizing:border-box}html,body{margin:0}body{background:var(--bg);color:var(--fg);font-family:var(--font-body);font-size:16px;line-height:1.75}[hidden]{display:none!important}a{color:var(--accent)}.site-footer,main{max-width:960px;margin:0 auto;padding-inline:16px}.header-bar{background:var(--surface);border-bottom:1px solid var(--line)}.site-header{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;max-width:960px;margin:0 auto;padding-block:16px;padding-inline:16px;display:flex}.site-header .logo{font-family:var(--font-display);color:var(--fg);align-items:center;gap:8px;font-size:20px;text-decoration:none;display:flex}.site-header .logo i{background:var(--sun);width:12px;height:12px;box-shadow:14px 0 0 var(--accent-fill), 28px 0 0 var(--coral);border-radius:50%;margin-right:30px}.site-header nav a{color:var(--fg);font-weight:700;text-decoration:none}.site-header nav a:hover{color:var(--accent)}.site-header nav{gap:16px;font-size:14px;display:flex}main{padding-block:16px 48px}.site-footer{color:var(--muted);border-top:1px solid var(--line);padding-block:14px 32px;font-size:12px}h1{font-family:var(--font-display);text-wrap:balance;font-weight:400;line-height:1.3}article table{border-collapse:collapse;margin-block:16px;font-size:14px;display:block;overflow-x:auto}article th,article td{border:1px solid var(--line);text-align:left;vertical-align:top;min-width:7em;padding:8px 10px}article th{background:var(--accent-soft)}article h2{margin-top:2em;font-size:22px}article h3{margin-top:1.5em;font-size:18px}.pr-notice{padding-top:8px;max-width:960px;color:var(--muted);margin:0 auto;padding-inline:16px;font-size:12px}.book-card{border:1px solid var(--line);background:var(--surface);color:var(--fg);border-radius:10px;align-items:center;gap:14px;margin-block:20px;padding:12px 14px;text-decoration:none;display:flex}.book-card:hover{border-color:var(--accent)}.book-card img{border-radius:4px;flex:none;width:64px;height:auto}.book-card span{flex-direction:column;gap:2px;min-width:0;display:flex}.book-card small{letter-spacing:.08em;color:var(--amber);font-size:11px;font-weight:700}.book-card em{color:var(--accent);font-size:13px;font-style:normal;font-weight:700}article{max-width:720px;margin:0 auto}.cover{border-radius:18px;width:100%;height:auto;margin-block:8px 20px;display:block}.card-grid{grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:18px;padding:0;list-style:none;display:grid}.card{background:var(--surface);border:1px solid var(--line);color:var(--fg);border-radius:16px;flex-direction:column;text-decoration:none;transition:transform .15s,box-shadow .15s;display:flex;overflow:hidden}.card:hover{transform:translateY(-2px);box-shadow:0 8px 24px #1f324014}.card img{width:100%;height:auto;display:block}.card-body{flex-direction:column;gap:6px;padding:14px 16px 16px;display:flex}.card-body strong{line-height:1.5}.card-body small{color:var(--muted)}.btn{background:var(--accent-fill);color:#fff;border-radius:999px;padding:12px 22px;font-weight:700;text-decoration:none;display:inline-block;box-shadow:0 4px #0b8a79}.btn:hover{filter:brightness(1.05)}@media (prefers-reduced-motion:reduce){.card{transition:none}}