:root{--ink:#102d40;--navy:#102e43;--gold:#ddbd7f;--muted:#546673;--line:#d9e0e3;--paper:#f7f8f6}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:100px}body{margin:0;color:var(--ink);background:white;font-family:"PingFang SC","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.85}a{color:inherit;text-decoration:none}img{display:block;max-width:100%;height:auto}p{margin:0 0 1.2em}h1,h2,h3{font-family:"Songti SC","Noto Serif CJK SC","SimSun",serif;line-height:1.45;margin:0;font-weight:600}h2{font-size:clamp(30px,3.1vw,48px);letter-spacing:.025em}h3{font-size:26px}a:focus-visible{outline:3px solid #b98225;outline-offset:6px}.skip{position:absolute;left:15px;top:-70px;background:white;padding:10px;z-index:5}.skip:focus{top:10px}header{min-height:90px;padding:18px 5%;display:flex;align-items:center;justify-content:space-between;gap:28px;border-bottom:1px solid 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br{display:none}footer{display:block}footer>p{margin-top:20px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}

/* Official three-volume covers */
.hero-pages{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));align-items:center;height:auto;gap:4px;padding:40px 0;margin:25px 0;background:#f7f8f6;border-radius:3px}.hero-pages img{position:static;width:100%;height:auto;object-fit:contain;transform:none;filter:none}.sample{background:#fff}.sample img{height:340px}.art-caption{margin-top:18px}@media(max-width:720px){.hero-pages{height:auto;max-width:100%;padding:25px 0}.sample img{height:360px}}
/* Larger first-screen covers, directly on the navy background. */
.hero{grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);gap:3%}
.hero-pages{background:transparent;border-radius:0;padding:30px 0;margin:24px 0;gap:0;overflow:visible}
.hero-pages img{width:138%;max-width:none;margin-left:-19%;height:auto;filter:drop-shadow(7px 14px 12px #0003)}
@media(max-width:720px){.hero{grid-template-columns:1fr}.hero-pages{padding:16px 0;margin:18px 0}.hero-pages img{width:138%;margin-left:-19%}}

/* Make white book covers distinct from their surroundings */
.three .sample {
    background: #edf1f4;
    border-radius: 6px;
}
.three .sample img {
    filter: drop-shadow(0 0 1px rgba(16,45,64,.25))
            drop-shadow(5px 9px 8px rgba(16,45,64,.18));
}