:root{color-scheme:light;--ink:#182c2b;--green:#164d43;--muted:#5b6864;--line:#d9dfd6;--paper:#f7f8f2;--accent:#d6ef93}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:30px}body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Hiragino Kaku Gothic ProN","Noto Sans JP",Meiryo,sans-serif;line-height:1.85}a{color:inherit;text-underline-offset:5px}a:focus-visible{outline:3px solid #bc6b25;outline-offset:6px}.wrap{width:min(1120px,calc(100% - 80px));margin-inline:auto}.skip{position:absolute;top:-100px;left:20px;background:white;padding:8px;z-index:10}.skip:focus{top:8px}.site-header{display:flex;align-items:center;justify-content:space-between;min-height:96px;border-bottom:1px solid var(--line);gap:20px}.brand{display:flex;align-items:center;gap:12px;font-size:12px;letter-spacing:.12em;font-weight:700;text-decoration:none}.mark{display:grid;place-items:center;background:var(--green);color:var(--accent);width:32px;height:32px;border-radius:50%;font:23px Georgia,serif}nav{display:flex;gap:28px;font-size:13px}nav a{text-decoration:none}.hero{display:grid;grid-template-columns:1.3fr 1fr;gap:60px;align-items:center;padding-block:88px 96px}.eyebrow{font-size:10px;letter-spacing:.14em;font-weight:700;color:var(--green);margin:0 0 24px}h1{font-size:clamp(34px,4.2vw,54px);line-height:1.4;letter-spacing:-.04em;margin:0 0 24px}h1 span{color:var(--green)}.subtitle{font-size:19px;line-height:1.8;margin:0 0 24px;font-weight:600}.intro{font-size:14px;color:var(--muted);line-height:2.1;margin:0 0 30px}.actions{display:flex;flex-wrap:wrap;gap:12px}.button{display:inline-flex;align-items:center;justify-content:space-between;gap:24px;padding:13px 22px;border:1px solid var(--green);border-radius:3px;text-decoration:none;font-size:14px;font-weight:600;transition:background .15s}.primary{background:var(--green);color:white}.primary:hover{background:#0c392f}.secondary:hover{background:#e4ecdc}.file-info{font-size:11px;color:var(--muted);line-height:1.9;margin:18px 0 0}.book-area{padding:28px 5px 0 20px}.book{position:relative;min-height:460px;padding:34px 30px 32px 38px;color:#f2f5e8;background:#163f38;border-radius:2px 7px 7px 2px;box-shadow:12px 13px 0 -5px #e1e4d8,20px 28px 45px -16px #233b3038;transform:rotate(3deg);border-left:8px solid #0c2b26;overflow:hidden}.book-top{font-size:9px;letter-spacing:.13em;line-height:1.8;color:#c8d4bd}.book-title{font:clamp(25px,2.9vw,36px)/1.2 Georgia,serif;margin-top:28px;letter-spacing:-.02em}.circuit{height:110px;margin:28px 0 22px;position:relative}.circuit i{position:absolute;width:100%;height:1px;background:#8daf81;left:0;top:20px}.circuit i:nth-child(2){top:55px}.circuit i:nth-child(3){top:90px}.gate{position:absolute;display:grid;place-items:center;background:var(--accent);color:#163f38;width:27px;height:27px;font:15px Georgia,serif}.g1{left:15%;top:7px}.g2{left:70%;top:42px}.g3{left:40%;top:77px}.connector{position:absolute;left:54%;top:20px;height:71px;width:1px;background:var(--accent)}.connector:before,.connector:after{content:"";position:absolute;width:7px;height:7px;background:var(--accent);border-radius:50%;left:-3px}.connector:after{bottom:0}.book-bottom{font-size:15px;font-weight:600}.book-bottom span{display:block;font-size:10px;letter-spacing:.12em;color:#c8d4bd;margin-top:8px}.book-caption{text-align:center;font-size:9px;letter-spacing:.16em;color:var(--muted);margin:35px 0 0}.benchmarks{padding-block:64px 70px;background:#eaf0e5;border-block:1px solid var(--line)}h2{font-size:27px;line-height:1.6;letter-spacing:-.03em;margin:0 0 16px}.section-heading .eyebrow{margin-bottom:13px}.section-heading>p:last-child{font-size:14px;color:var(--muted);margin:0}.benchmark-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:36px;margin-top:40px}.benchmark-grid article{border-top:1px solid #bacaba;padding-top:20px}.number{font-size:10px;letter-spacing:.12em;color:var(--green);font-weight:600}.benchmark-grid h3{font:32px Georgia,serif;margin:14px 0 10px}.benchmark-grid p{font-size:13px;color:var(--muted);line-height:2}.benchmark-grid .task{font-size:15px;font-weight:600;color:var(--ink);margin:0 0 10px}.contents{display:grid;grid-template-columns:.85fr 1.4fr;gap:95px;padding-block:88px}.contents-intro>p:not(.eyebrow){font-size:14px;color:var(--muted)}.chapters{list-style:none;padding:0;margin:0;border-top:1px solid var(--line)}.chapters li{border-bottom:1px solid var(--line)}.chapters a{display:flex;align-items:center;gap:20px;text-decoration:none;padding:17px 0}.chapters a:hover h3{text-decoration:underline}.chapters a>span{font:15px Georgia,serif;color:#7c8c7b}.chapters h3{font-size:14px;margin:0;font-weight:600}.chapters p{font-size:11px;margin:2px 0 0;color:var(--muted)}.chapters small{margin-left:auto;white-space:nowrap;font-size:11px;color:var(--muted)}.notes{display:grid;grid-template-columns:.85fr 1.4fr;gap:95px;padding-block:40px;border-top:1px solid var(--line)}.notes .eyebrow{margin-bottom:12px}.notes h2{font-size:20px}.notes p:not(.eyebrow){font-size:12px;color:var(--muted);margin-top:0;line-height:2}.closing{background:#eaf0e5;padding:36px 40px;margin-block:25px 64px;display:flex;align-items:center;justify-content:space-between;gap:25px;border-radius:4px}.closing .eyebrow{margin-bottom:8px}.closing h2{font-size:24px;margin-bottom:8px}.closing p:last-child{font-size:13px;color:var(--muted);margin:0}footer{display:flex;justify-content:space-between;gap:20px;padding-block:25px;border-top:1px solid var(--line);font-size:11px;color:var(--muted)}@media(max-width:850px){.wrap{width:calc(100% - 48px)}.hero{gap:30px;padding-block:55px}.book-area{padding-left:0}.book{min-height:420px;padding:25px 20px}.book-title{font-size:28px}.contents,.notes{gap:40px}.benchmark-grid{gap:24px}}@media(max-width:620px){.wrap{width:calc(100% - 36px)}.site-header{min-height:76px}.brand{font-size:9px;gap:8px;letter-spacing:.06em}.mark{width:26px;height:26px;font-size:19px}nav{gap:14px;font-size:11px}.hero{grid-template-columns:1fr;gap:40px;padding-block:42px 52px}.eyebrow{font-size:8px;letter-spacing:.08em}h1{font-size:38px}.subtitle{font-size:17px}.intro{font-size:13px}.book-area{max-width:290px;margin:auto;width:100%;padding:0 10px}.book{min-height:390px;padding:25px}.book-title{font-size:29px}.book-top{font-size:8px}.circuit{margin:20px 0}.book-caption{font-size:8px}.benchmarks{padding-block:42px}.benchmark-grid{grid-template-columns:1fr;gap:26px;margin-top:28px}.benchmark-grid h3{font-size:28px;margin-block:7px}.contents{grid-template-columns:1fr;gap:25px;padding-block:48px}.contents h2 br{display:none}.notes{grid-template-columns:1fr;gap:10px;padding-block:30px}.chapters a{gap:14px}.chapters h3{font-size:13px}.chapters p{font-size:10px}h2{font-size:24px}.closing{flex-direction:column;align-items:flex-start;padding:25px;margin-block:15px 40px}.closing h2{font-size:20px}footer{flex-direction:column;gap:7px;font-size:10px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.button{transition:none}}
