:root{--primary:#2F7D5B;--secondary:#D96C8A;--ink:#1F2A26;--bg:#F7F8F5;--soft:#EEF3EF;--text:#28312D;--muted:#6B756F;--accent:#E58A3A;--line:#DDE5DF;--white:#fff;--radius:20px;--shadow:0 16px 45px rgba(31,42,38,.08);--shell:min(1180px,calc(100% - 36px));font-synthesis:none}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.72 system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif}img{max-width:100%;height:auto;display:block}a{color:inherit;text-decoration:none}button,input{font:inherit}.shell{width:var(--shell);margin-inline:auto}.sr-only{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.skip-link{position:fixed;left:16px;top:-80px;z-index:100;background:var(--ink);color:#fff;padding:10px 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@media(max-width:820px){:root{--shell:min(100% - 28px,1180px)}.header-row{min-height:64px}.site-nav{display:none;position:absolute;top:64px;left:14px;right:14px;background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);padding:10px;flex-direction:column;align-items:stretch}.site-nav.is-open{display:flex}.site-nav a{padding:12px}.menu-toggle{display:block}.hero{grid-template-columns:1fr;padding-top:34px}.hero-visual{min-height:380px}.story-grid,.story-grid--two{grid-template-columns:1fr}.section-head{align-items:flex-start;flex-direction:column}.utility-band>div{grid-template-columns:120px 1fr}.utility-band>div img{width:120px;height:120px}.guide-grid{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr;gap:28px}.footer-grid>div:first-child{grid-column:auto}.article-layout{gap:24px}}
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