*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:95px;font-size:20px}body{margin:0;background:#faf9f5;color:#183f35;font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;line-height:1.9}a{color:inherit;text-decoration:none}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid #b9812f;outline-offset:5px}.topbar{position:sticky;top:0;z-index:5;display:flex;align-items:center;justify-content:space-between;padding:13px max(20px,calc((100% - 820px)/2));background:#fff;border-bottom:1px solid #d9dfd7;gap:16px}.brand{font-size:1.2rem;font-weight:750;white-space:nowrap}.brand span{font-size:.75rem;letter-spacing:.1em;color:#866323;margin-left:5px}.tools{display:flex;align-items:center;gap:18px;font-size:.8rem}.tools a,button{min-height:44px;display:inline-flex;align-items:center}button{background:#123f34;color:#fff;border:0;border-radius:7px;font:inherit;padding:8px 13px;cursor:pointer}main{max-width:860px;margin:auto;padding:0 20px}.intro{padding:50px 28px 34px}.eyebrow{font-size:.75rem;color:#647568;letter-spacing:.12em}h1{font-size:clamp(2.1rem,7vw,3.4rem);line-height:1.27;letter-spacing:.03em;margin:20px 0;color:#123f34}h1 span{color:#92703a}.intro p{font-size:1rem;max-width:29em;color:#59675e}.intro-meta{font-size:.75rem;border-top:1px solid #d9dfd7;padding-top:15px;display:flex;justify-content:space-between;color:#617466;margin-top:28px}details{margin:0 0 30px;background:#edf3ef;border-radius:10px;padding:15px 24px;scroll-margin-top:95px}summary{font-weight:650;cursor:pointer;min-height:44px;line-height:44px}summary span{float:right;font-size:.75rem;font-weight:400;color:#617466}nav{display:grid;gap:0;padding:16px 0}nav a{font-size:.88rem;display:flex;align-items:baseline;gap:16px;padding:12px 0;border-top:1px solid #ccd8e2}nav span{font-size:.72rem;color:#6c7c89;font-variant-numeric:tabular-nums}section{background:#fff;border:1px solid #e0e6ec;border-radius:12px;padding:34px 40px;margin-bottom:28px;scroll-margin-top:95px}.chapter-label{font-size:.7rem;letter-spacing:.12em;color:#7c602e;margin-bottom:10px}h2{font-size:1.5rem;line-height:1.55;margin:0 0 28px;letter-spacing:.02em;color:#123f34}h3{font-size:1.13rem;margin:1.5em 0 .65em;line-height:1.65;color:#123f34}p{margin:.6em 0;overflow-wrap:anywhere}.emphasis{font-weight:750;color:#123f34;font-size:1.1rem;margin:1em 0}blockquote{margin:24px 0;padding:18px 22px;border-left:4px solid #b9985b;background:#f0f4f8;font-weight:600;line-height:1.85}.list-item{padding-left:20px;position:relative}.list-item:before{content:'•';position:absolute;left:0;color:#92703a}.section-end{font-size:.75rem;color:#536a7e;display:inline-block;padding:12px 0;margin-top:25px;border-top:1px solid #d9dfd7}footer{text-align:center;font-size:.7rem;color:#647568;padding:24px 10px 50px}footer a{display:inline-block;padding:15px}.large article{font-size:1.25rem}.large article h2{font-size:1.65rem}.large article h3,.large article .emphasis{font-size:1.3rem}@media(max-width:540px){main{padding:0 14px}.intro{padding:30px 9px 24px}section{padding:27px 22px;border-radius:9px}h2{font-size:1.3rem}.tools{gap:13px}.topbar{padding:10px 18px}details{padding:12px 19px}blockquote{padding:14px 16px;margin:21px 0}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{background:#faf9f4;color:#183f35}.intro h1, h1{color:#103e33}.topbar{background:#fffef9}.intro p{color:#59675e}button{background:#174f3e}details{background:#edf2ec}article{border-color:#e6e4d8}.eyebrow{color:#9b804d}