:root{--paper:#f5f2eb;--card:#fffcf7;--ink:#263b31;--muted:#69766b;--green:#244f40;--line:#d8d9cd;--serif:Georgia,"Songti SC","Noto Serif CJK SC",serif}*{box-sizing:border-box}[hidden]{display:none!important}html{scroll-behavior:smooth;scroll-padding-top:24px}body{margin:0;background:var(--paper);color:var(--ink);font:15px/1.8 -apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif}a{color:inherit;text-decoration:none}a:hover{color:#58744e}button,input,select{font:inherit;color:inherit}a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #a88140;outline-offset:4px}.wrap{width:min(1280px,calc(100% - 96px));margin-inline:auto}.skip{position:absolute;top:0;left:20px;transform:translateY(-150%);background:var(--green);color:white;padding:10px;z-index:20}.skip:focus{transform:none}.mast{padding-block:25px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);gap:24px}.brand{font-size:14px;font-weight:650;letter-spacing:2px}.brand span{font-weight:400;color:var(--muted);padding-left:14px;letter-spacing:1px}.mast nav{display:flex;gap:28px;font-size:13px}.hero{display:grid;grid-template-columns:1fr .85fr;align-items:center;gap:8%;padding-block:70px 85px}.eyebrow{font-size:11px;letter-spacing:2px;color:var(--muted);margin:0 0 15px}.hero h1{font:500 clamp(44px,5.2vw,76px)/1.25 var(--serif);margin:0 0 28px;letter-spacing:1px}.dek{font-size:17px;line-height:1.95;max-width:32em;color:#5e6b60}.hero-links{display:flex;gap:26px;align-items:center;margin-block:30px}.primary{display:inline-block;background:var(--green);color:#fff;padding:11px 23px;font-size:14px}.primary:hover{color:white;background:#38624c}.hero-links>a:last-child{font-size:13px;border-bottom:1px solid #aab8a7}.stats{display:flex;gap:65px;border-top:1px solid var(--line);padding-top:24px;margin:35px 0 15px}.stats dt{font:44px/1.1 var(--serif)}.stats dd{margin:7px 0 0;font-size:12px;color:var(--muted)}.hero-note{font-size:12px;color:var(--muted)}.hero-art{margin:0;position:relative}.hero-art>img{width:100%;height:auto;display:block;max-height:565px;object-fit:cover}.hero-art figcaption{background:var(--card);border:1px solid var(--line);padding:20px 25px;position:absolute;left:-25px;bottom:25px;max-width:95%;font:20px/1.6 var(--serif)}.hero-art figcaption span{display:block;color:var(--muted);font:11px/1.6 sans-serif;margin-top:8px}.section-heading{display:flex;gap:20px;justify-content:space-between;align-items:baseline;margin:0 0 25px}.section-heading h2{font:500 29px/1.5 var(--serif);margin:0}.section-heading p,.section-heading>a{color:var(--muted);font-size:13px;margin:0}.library-tools{border-block:1px solid var(--line);padding-block:32px;margin-bottom:40px}form{display:grid;grid-template-columns:1.4fr 1fr auto;gap:16px;align-items:end}label{display:block;font-size:12px;color:var(--muted);min-width:0}input,select{display:block;width:100%;max-width:100%;min-width:0;border:1px solid #bfc9b8;background:var(--card);height:48px;padding:0 14px;border-radius:0;margin-top:7px;font-size:15px}select{padding-right:25px;text-overflow:ellipsis}button{cursor:pointer;background:transparent;border:1px solid #c8d0c1;padding:9px 14px;font-size:13px}#reset{height:48px}.themes{display:flex;gap:8px;flex-wrap:wrap;margin-top:20px}.themes button{border-color:transparent;padding:7px 12px}.themes button[aria-pressed=true]{background:var(--green);color:white}.result-count{color:var(--muted);font-size:12px;margin-bottom:0}.book-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:36px 25px}.book-card{min-width:0;background:var(--card);border:1px solid #e1e1d6;display:flex;flex-direction:column}.book-cover{display:block;background:#e9eade;overflow:hidden}.book-cover img{display:block;width:100%;height:auto;aspect-ratio:1.5;object-fit:cover;transition:transform .25s}.book-cover:hover img{transform:scale(1.025)}.book-copy{padding:23px;display:flex;flex-direction:column;flex:1}.book-copy>.eyebrow{font-size:10px;letter-spacing:.5px;line-height:1.7}.book-copy h3{font:600 24px/1.5 var(--serif);margin:0 0 12px}.book-copy>p:not(.eyebrow){font-size:13px;color:var(--muted);margin:0 0 12px}.book-copy .book-progress{margin-top:auto!important;padding-top:15px}.card-links{display:flex;justify-content:space-between;gap:12px;border-top:1px solid var(--line);padding-top:13px;font-size:12px;color:var(--green)}.reading-list{margin-top:70px}.unit-list{list-style:none;margin:0;padding:0}.unit-list>li{border-top:1px solid var(--line)}.unit-list>li:last-child{border-bottom:1px solid var(--line)}.unit-list a{display:grid;grid-template-columns:1fr 2fr .6fr;gap:25px;padding:21px 8px;align-items:center}.unit-list a:hover{background:#eaece1}.row-book{font-size:12px;color:var(--muted)}.unit-list small{display:block;font-size:10px;color:var(--muted);margin-top:5px}.unit-list strong{font-weight:550;font-size:16px}.row-question{display:block;color:var(--muted);font-size:12px;margin-top:4px}.row-theme{font-size:11px;text-align:right}.empty{text-align:center;background:var(--card);padding:40px 20px}.other-topics{border-top:1px solid var(--line);padding-block:35px;margin-top:65px}.other-topics h2{font:30px/1.5 var(--serif)}.other-topics p{color:var(--muted);max-width:55em}.other-topics>div{display:flex;gap:24px;flex-wrap:wrap;font-size:13px}.footer{margin-top:20px;border-top:1px solid var(--line);padding-block:25px 35px;display:flex;justify-content:space-between;gap:30px;color:var(--muted);font-size:11px}.footer p{margin:0}
@media(max-width:900px){.wrap{width:calc(100% - 48px)}.hero{gap:6%;padding-block:48px}.hero h1{font-size:52px}.book-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.mast nav{gap:15px}.hero-art figcaption{font-size:17px;padding:15px;left:-15px}.dek{font-size:15px}.hero-links{gap:15px;flex-wrap:wrap}.section-heading h2{font-size:26px}form{grid-template-columns:1fr 1fr}#reset{height:38px;grid-column:1/-1;justify-self:start}.unit-list a{grid-template-columns:1fr 2fr;gap:15px}.row-theme{grid-column:2;text-align:left}.row-theme small{display:inline;margin-left:12px}}
@media(max-width:560px){.wrap{width:calc(100% - 32px)}.mast{padding-block:18px;display:block}.brand{font-size:12px}.mast nav{margin-top:12px;font-size:12px;gap:22px}.hero{grid-template-columns:1fr;gap:24px;padding-block:35px 42px}.hero h1{font-size:46px;margin-bottom:18px}.hero .eyebrow{font-size:10px}.dek{font-size:15px}.hero-links{margin-block:23px}.stats{margin-top:27px;gap:45px}.stats dt{font-size:36px}.hero-art{margin:0 0 0 20px}.hero-art>img{max-height:300px;object-position:center 48%}.hero-art figcaption{font-size:17px;bottom:16px;padding:13px 18px}.section-heading{display:block}.section-heading h2{font-size:25px}.section-heading p,.section-heading>a{display:block;margin-top:10px}.library-tools{padding-block:25px;margin-bottom:27px}form{grid-template-columns:1fr}input,select{font-size:16px}.themes{gap:3px}.themes button{font-size:12px;padding:7px 8px}.book-grid{grid-template-columns:1fr;gap:22px}.book-copy{padding:20px}.book-copy h3{font-size:25px}.book-cover img{aspect-ratio:1.75}.reading-list{margin-top:43px}.unit-list a{grid-template-columns:1fr;gap:9px;padding:18px 2px}.row-book small{margin-top:2px}.row-theme{grid-column:1}.unit-list strong{font-size:17px}.row-question{font-size:12px}.footer{flex-wrap:wrap;gap:18px}.footer>p{flex-basis:100%}.other-topics{margin-top:40px}.other-topics h2{font-size:26px}.other-topics>div{gap:15px;font-size:12px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}

.filter-label{display:block;font-size:12px;color:var(--muted)}.book-filter{min-width:0}.book-picker{position:relative;min-width:0;margin-top:7px}.book-picker summary{display:block;cursor:pointer;background:var(--card);border:1px solid #bfc9b8;min-height:48px;padding:10px 30px 10px 14px;font-size:15px;line-height:26px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;list-style:none}.book-picker summary::-webkit-details-marker{display:none}.book-picker summary:after{content:"⌄";position:absolute;right:13px;top:9px}.book-picker summary:focus-visible{outline:3px solid #a88140;outline-offset:4px}.book-options{position:absolute;top:calc(100% + 5px);left:0;right:0;max-height:350px;overflow:auto;background:var(--card);border:1px solid #bfc9b8;padding:6px;z-index:5;box-shadow:0 10px 20px #263b3114}.book-options button{display:block;width:100%;text-align:left;border:0;font-size:13px;line-height:1.6}.book-options button:hover,.book-options button[aria-pressed=true]{background:#e6ebdf}.book-options button:focus-visible{outline-offset:-2px}@media(max-width:560px){.book-picker summary{font-size:16px}}