:root{--color-ink:#172026;--color-muted:#5e6b73;--color-soft:#f5f7f2;--color-line:#dce3dd;--color-card:#fff;--color-primary:#126f73;--color-primary-dark:#0a5055;--color-accent:#d98d2b;--color-accent-soft:#fff2df;--shadow-soft:0 22px 70px #17202621;--shadow-card:0 12px 40px #17202614;--radius-card:8px;--container:1160px;--nav-height:76px;--topbar-height:38px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{color:var(--color-ink);background:var(--color-soft);margin:0;font-family:Microsoft YaHei,PingFang SC,Noto Sans SC,Arial,sans-serif;line-height:1.6;overflow-x:hidden}img{width:100%;height:auto;display:block}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}h1,h2,h3,h4,p{margin-top:0}.page{background:linear-gradient(#ffffffdb 0%,#f5f7f2f5 48%,#fff 100%);overflow:hidden}.container{width:min(var(--container), calc(100% - 40px));margin:0 auto}.section{padding:92px 0}.button{cursor:pointer;white-space:nowrap;border:1px solid #0000;border-radius:6px;justify-content:center;align-items:center;gap:8px;min-height:44px;padding:11px 18px;font-size:15px;font-weight:800;transition:transform .2s,box-shadow .2s,background .2s;display:inline-flex}.button:hover{transform:translateY(-1px)}.button-primary{color:#fff;background:var(--color-primary);box-shadow:0 12px 26px #126f733b}.button-primary:hover{background:var(--color-primary-dark)}.button-light{color:var(--color-ink);background:#fff;border-color:#17202621}.button-light:hover{box-shadow:var(--shadow-card)}@media (width<=980px){.section{padding:72px 0}}@media (width<=680px){.container{width:min(100% - 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