@charset "UTF-8";
:root{color-scheme:light;--paper:#f6f4ed;--ink:#223b34;--muted:#596860;--line:#cbd2c7;--accent:#a33e2c}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font:17px/1.85 system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif}a{color:inherit;text-underline-offset:5px}a:hover{color:var(--accent)}a:focus-visible{outline:3px solid var(--accent);outline-offset:5px}.wrap{width:min(1080px,calc(100% - 48px));margin:auto}header{display:flex;justify-content:space-between;align-items:center;padding:30px 0;border-bottom:1px solid var(--line);gap:20px}.brand{text-decoration:none;font-family:serif;font-size:29px;letter-spacing:5px;font-weight:600}nav{display:flex;gap:26px;font-size:14px}nav a{text-decoration:none}.skip{position:absolute;top:-80px;padding:10px;background:white}.skip:focus{top:8px}.hero{display:grid;grid-template-columns:1.3fr 1fr;align-items:center;gap:40px;padding:90px 0 70px}.eyebrow{font-size:12px;letter-spacing:2px;color:var(--accent);font-weight:650}.hero h1{font:500 clamp(40px,5vw,64px)/1.3 "Songti SC","Noto Serif CJK SC",serif;letter-spacing:2px;margin:24px 0}.hero p{max-width:510px;color:var(--muted)}.actions{display:flex;gap:22px;align-items:center;flex-wrap:wrap;margin-top:30px}.button{display:inline-block;background:var(--ink);color:var(--paper);text-decoration:none;padding:10px 24px;border-radius:3px}.button:hover{background:#36584c;color:white}.quiet{font-size:13px;color:var(--muted)}.art{width:100%;max-width:430px;justify-self:center}.steps{border-top:1px solid var(--line);display:grid;grid-template-columns:repeat(3,1fr);gap:40px;padding:36px 0 56px}.steps h2{font-size:20px;margin:12px 0}.steps p{font-size:15px;color:var(--muted);margin:0}.number{font:italic 22px Georgia,serif;color:var(--accent)}.note{border-top:1px solid var(--line);padding:28px 0;max-width:820px}.note h2{font-size:20px}.note p{color:var(--muted);font-size:15px}.article{max-width:780px;margin:66px auto 80px}.article h1{font:500 40px/1.4 "Songti SC",serif;letter-spacing:2px;margin-bottom:14px}.article h2{font-size:23px;margin:38px 0 12px}.article p,.article li{color:#3e5047}.article .lead{font-size:20px}.article li{margin:10px 0}.callout{border-left:3px solid var(--accent);padding:12px 22px;background:#eeeee5;margin:26px 0}.contact{overflow-wrap:anywhere}footer{border-top:1px solid var(--line);padding:26px 0 38px;display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;font-size:13px;color:var(--muted)}footer a{margin-left:16px}.anchor{scroll-margin-top:24px}@media(max-width:640px){.wrap{width:calc(100% - 36px)}header{padding:20px 0}nav{gap:18px}.hero{grid-template-columns:1fr;padding:48px 0 40px;gap:16px}.hero h1{font-size:43px}.art{max-width:280px}.steps{grid-template-columns:1fr;gap:26px;padding-bottom:36px}.steps h2{display:inline;margin-left:14px}.steps p{margin-top:6px}.article{margin:40px auto 60px}.article h1{font-size:34px}.article h2{font-size:21px}footer a{margin:0 16px 0 0}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
