:root{--bg:#fff;--ink:#222;--mute:#555;--pri:#d96c00;--hi:#f28c1b;--card:#fff;--line:#e6e6e6}
*{box-sizing:border-box}html{color-scheme:light}html{scroll-padding-top:70px}
body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.65 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
a{color:var(--pri)}a:focus-visible,.btn:focus-visible,summary:focus-visible{outline:3px solid var(--hi);outline-offset:2px}
.w{max-width:820px;margin:0 auto;padding:0 20px}.wide{max-width:1040px}
header{position:sticky;top:0;background:var(--bg);border-bottom:1px solid var(--line);z-index:9}
header .w{display:flex;justify-content:space-between;align-items:center;height:60px}
.logo{font-weight:800;letter-spacing:-.03em;font-size:1.25rem;color:var(--ink);text-decoration:none;border-bottom:4px solid var(--hi)}
nav a{margin-left:18px;color:var(--ink);text-decoration:none;font-weight:600;font-size:.95rem}
.hero{padding:56px 0 48px;background:var(--card);border-bottom:1px solid var(--line)}
h1{font-size:clamp(2rem,6vw,3.4rem);line-height:1.08;letter-spacing:-.035em;margin:0 0 16px}
h2{color:var(--pri);font-size:1.65rem;line-height:1.2;letter-spacing:-.02em;margin:2.2em 0 .5em}h3{margin:0 0 6px}
.lead{font-size:1.2rem;color:var(--mute);max-width:600px}
.btn{display:inline-block;background:var(--ink);color:var(--bg);padding:12px 20px;border-radius:6px;font-weight:700;text-decoration:none}
.btn.buy{background:var(--hi);color:#111}
.grid{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));margin:24px 0}
.tile{background:#fff;border:1px solid var(--line);border-left:6px solid var(--hi);padding:18px 20px;border-radius:4px}
.tile p{margin:4px 0;color:var(--mute)}
.note{background:var(--card);border:1px solid var(--line);padding:12px 16px;border-radius:4px;font-size:.92rem;color:var(--mute)}
.crumb{font-size:.88rem;color:var(--mute);padding-top:22px}
.pick{display:grid;grid-template-columns:260px 1fr;gap:20px;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:22px;margin:22px 0}.pimg{background:var(--bg);border:2px dashed var(--line);border-radius:8px;aspect-ratio:1/1;display:flex;align-items:center;justify-content:center;text-align:center;font-size:.8rem;color:var(--mute);padding:8px}.pick h3{color:var(--pri);font-size:1.3rem}@media(max-width:620px){.pick{grid-template-columns:1fr}.pimg{max-width:320px;margin:0 auto;width:100%}}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin:8px 0 12px;padding:0;list-style:none}
.chips li{border:1px solid var(--line);padding:3px 10px;border-radius:99px;font-size:.88rem}
.badge{background:var(--hi);color:#111;font-weight:700;padding:2px 10px;border-radius:3px;font-size:.85rem}
table{width:100%;border-collapse:collapse;font-size:.95rem}th,td{text-align:left;padding:10px;border-bottom:1px solid var(--line)}
.scroll{overflow-x:auto}details{border-bottom:1px solid var(--line);padding:12px 0}summary{font-weight:700;cursor:pointer}
footer{margin-top:72px;border-top:1px solid var(--line);padding:32px 0;font-size:.92rem;color:var(--mute)}footer a{margin-right:14px}
.brand img{height:30px;vertical-align:middle;margin-right:8px}.logo{border:0;display:flex;align-items:center}
.hero2{display:grid;grid-template-columns:1.05fr .95fr;gap:32px;align-items:center}@media(max-width:760px){.hero2{grid-template-columns:1fr}}.hero2 img{width:100%;height:auto}
.cards{display:grid;gap:20px;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));margin:22px 0}
.cat{background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden;text-decoration:none;color:inherit;box-shadow:0 1px 4px rgba(0,0,0,.06);display:block}
a.cat:hover{box-shadow:0 4px 14px rgba(0,0,0,.12)}.cat img{width:100%;height:auto;display:block;border-bottom:1px solid var(--line)}.cat div{padding:14px 18px}.cat b{color:var(--pri);font-size:1.1rem}.cat p{margin:4px 0 0;color:var(--mute);font-size:.92rem}.soon{opacity:.7}
.trust{display:grid;gap:12px;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));margin:0}.trust p{margin:0;padding:14px 16px;border-left:4px solid var(--hi);background:#fafafa;font-weight:600}
.toc{background:#fafafa;border:1px solid var(--line);border-radius:8px;padding:12px 20px}.toc ol{margin:6px 0 0;padding-left:20px}
.fig{margin:20px 0}.fig img{width:100%;height:auto;border:1px solid var(--line);border-radius:10px}.fig figcaption{font-size:.88rem;color:var(--mute);margin-top:6px}
.author{display:flex;gap:16px;align-items:center;border:1px solid var(--line);border-radius:10px;padding:16px;margin:32px 0}.author img{width:84px;height:84px;border-radius:50%;object-fit:cover}.author p{margin:0}
.byline{display:flex;gap:10px;align-items:center;color:var(--mute);font-size:.92rem}.byline img{width:36px;height:36px;border-radius:50%;object-fit:cover}
.btn.buy:hover{filter:brightness(.95)}.me{width:130px;height:130px;border-radius:50%;object-fit:cover;border:3px solid var(--hi)}