:root{--background:#f7f4ec;--paper:#fffcf5;--ink-blue:#24354c;--ink-deep:#172638;--jade:#287c73;--terracotta:#b8573e;--border:#e2ded5;--muted:#67747e}*{box-sizing:border-box}body{margin:0;background:var(--background);font:16px/1.75 system-ui,-apple-system,"Microsoft Yahei",sans-serif;color:var(--ink-blue)}a{color:inherit;text-decoration:none}a:hover{color:var(--jade)}.wrap{max-width:1320px;padding:0 30px;margin:auto}.top{background:var(--paper);border-bottom:1px solid var(--border)}.bar{min-height:78px;display:flex;gap:25px;align-items:center;justify-content:space-between}.brand{font-weight:800;color:var(--ink-deep);font-size:24px;white-space:nowrap}.nav{display:flex;gap:15px;white-space:nowrap}.search,.filter{display:flex;gap:8px}.search input,.filter input,.filter select{min-width:0;border:1px solid var(--border);border-radius:9px;padding:10px 12px;background:white;font:inherit}.search input{width:260px}button,.button{cursor:pointer;border:0;border-radius:10px;padding:11px 20px;color:white;background:var(--jade);font:inherit;display:inline-block}.category-strip{background:#e9f1ec;border-bottom:1px solid var(--border)}.category-links{display:flex;gap:25px;overflow-x:auto;white-space:nowrap;padding-top:12px;padding-bottom:12px;font-size:14px}.hero{margin:30px 0 48px;padding:60px;min-height:370px;border-radius:22px;background:linear-gradient(115deg,#1b2e43,#286f6c);display:grid;grid-template-columns:1.4fr 1fr;gap:30px;align-items:center;color:#fff}.hero h1{font-size:clamp(32px,4vw,52px);line-height:1.3;margin:20px 0}.hero p{max-width:550px}.hero-decoration{display:flex;justify-content:center;align-items:center;flex-direction:column;min-height:260px;border:1px solid #93b7ae;border-radius:50%;text-align:center;gap:12px}.hero-decoration span{font-size:75px;color:#dec48b}.hero-decoration strong{font-size:29px}.hero-decoration small{max-width:190px}.eyebrow{color:var(--jade);font-size:12px;font-weight:800;letter-spacing:2px}.hero .eyebrow{color:#bde2d8}section{margin:48px 0}.section-head{display:flex;justify-content:space-between;align-items:center;gap:14px}.section-head h2,h2{font-size:25px;line-height:1.4;color:var(--ink-deep)}.category-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.cat{display:flex;gap:5px;flex-direction:column;padding:23px;background:var(--paper);border:1px solid var(--border);border-radius:13px}.cat small{color:var(--terracotta)}.cat strong{font-size:19px}.cat span,.muted,.cat small{color:var(--muted)}.book-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:15px}.book-item{display:grid;grid-template-columns:113px 1fr;gap:20px;padding:20px;background:#fff;border:1px solid var(--border);border-radius:14px;margin-bottom:14px;min-width:0}.book-item h3{font-size:19px;margin:0 0 7px}.book-item p{font-size:14px;margin:0 0 10px;color:#414e5a}.book-item small{color:var(--muted)}.cover{display:block;aspect-ratio:2/3;border-radius:8px;overflow:hidden}.cover img,.detail-cover img{width:100%;height:100%;object-fit:cover}.cover-fallback{height:100%;min-height:145px;background:linear-gradient(150deg,#24354c,#287c73);color:#fff;font-size:19px;display:flex;align-items:center;justify-content:center;text-align:center;padding:15px;writing-mode:vertical-rl;letter-spacing:4px}.inline-link{color:var(--jade);font-weight:700}.feature-split{display:grid;grid-template-columns:1fr 1fr;gap:18px}.feature-split>div{padding:38px;background:#e8f0eb;border-radius:18px}.feature-split>div:nth-child(2){background:#f2e8df}.sample,.end-cta{background:var(--paper);padding:34px;border-radius:18px}.sample blockquote{font-size:18px;line-height:1.9;border-left:3px solid var(--jade);padding-left:25px}.three{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}.three a{padding:30px;background:#e9f1ec;border-radius:14px;font-weight:700}.end-cta{text-align:center}.footer{background:#172638;color:#dde8e6;padding:37px 0;margin-top:80px}.footer p{font-size:14px}.page-heading{padding:35px 0 16px}.page-heading h1{font-size:40px;margin:5px 0}.page-heading p{color:var(--muted)}.library-layout{display:grid;grid-template-columns:210px 1fr;gap:32px}.side{display:flex;flex-direction:column;gap:9px;padding:15px 20px;background:white;border-radius:12px;align-self:start}.side h3{margin:0}.filter{flex-wrap:wrap;margin:10px 0 20px}.filter input{flex:1}.pagination{display:flex;gap:8px}.pagination a{padding:5px 13px;border:1px solid var(--border);border-radius:8px}.pagination a.active{background:var(--jade);color:white}.empty{padding:40px;background:white}.breadcrumbs{padding:23px 0;color:var(--muted)}.book-detail{display:grid;grid-template-columns:220px 1fr;gap:38px;background:white;border-radius:18px;padding:35px}.detail-cover{aspect-ratio:2/3;max-height:340px;overflow:hidden}.detail-cover .cover-fallback{height:100%}.book-detail h1{font-size:38px}.detail-section{background:white;border-radius:15px;padding:30px;margin:30px 0}.chapter-list{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}.chapter-list a{padding:12px;background:#f4f4ee;border-radius:8px}.collection{padding:30px;background:#fff;border-radius:16px}.collection:nth-of-type(even){background:#edf3f0}@media(max-width:1100px){.bar{flex-wrap:wrap;padding-top:12px;padding-bottom:12px}.nav{width:100%;justify-content:space-between}.book-grid{grid-template-columns:1fr}}@media(max-width:700px){.wrap{padding-left:16px;padding-right:16px}.bar{gap:10px}.brand{font-size:21px}.search{width:100%;order:3}.search input{width:100%;flex:1}.nav{font-size:13px;gap:8px}.hero{padding:26px;grid-template-columns:1fr;min-height:280px}.hero-decoration{display:none}.category-grid{grid-template-columns:repeat(2,1fr)}.cat{padding:16px}.cat strong{font-size:16px}.feature-split,.three,.library-layout,.book-detail{grid-template-columns:1fr}.book-item{grid-template-columns:88px 1fr;padding:12px;gap:13px}.book-item h3{font-size:17px}.book-item p{font-size:13px}.cover-fallback{font-size:15px}.side{display:grid;grid-template-columns:repeat(2,1fr)}.side h3{grid-column:1/-1}.page-heading h1{font-size:30px}.book-detail{padding:20px}.detail-cover{width:180px}.chapter-list{grid-template-columns:1fr}.collection{padding:15px}.footer{margin-top:35px}}