:root{--paper:#f5f1e8;--paper-deep:#e8e0d1;--paper-bright:#fbf8f1;--ink:#17211d;--muted:#66716c;--pine:#174c3c;--pine-deep:#0d3128;--pine-soft:#dce7e0;--cinnabar:#a13d2d;--bronze:#9a7b43;--line:#17211d24;--shadow:0 18px 60px #18241f17;--radius:22px;--container:min(1180px, calc(100vw - 48px))}*{box-sizing:border-box}html{scroll-behavior:smooth}body{color:var(--ink);background:var(--paper);margin:0;font-family:Noto Sans SC,Microsoft YaHei,PingFang SC,system-ui,sans-serif;font-size:16px;line-height:1.65}a{color:inherit;text-decoration:none}button,input,textarea,select{font:inherit}button,a{-webkit-tap-highlight-color:transparent}img{max-width:100%;height:auto}h1,h2,h3,p{margin-top:0}h1,h2,h3{letter-spacing:-.035em;line-height:1.18}h1{font-size:clamp(2.8rem,6vw,5.8rem)}h2{font-size:clamp(2rem,3.5vw,3.25rem)}h3{font-size:1.25rem}:focus-visible{outline-offset:4px;outline:3px solid 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a:hover{color:var(--pine)}.nav-actions{align-items:center;gap:12px;display:flex}.icon-link{border-radius:50%;place-items:center;width:42px;height:42px;display:grid}.icon-link:hover{background:var(--paper-deep)}.account-link{border-left:1px solid var(--line);align-items:center;gap:7px;padding:10px 16px;font-weight:700;display:flex}.mobile-menu{display:none;position:relative}.mobile-menu summary{background:var(--paper-deep);width:42px;height:42px;color:var(--ink);cursor:pointer;border-radius:50%;place-items:center;list-style:none;display:grid}.mobile-menu summary::-webkit-details-marker{display:none}.mobile-menu nav{z-index:30;background:var(--paper-bright);border:1px solid var(--line);width:min(280px,100vw - 28px);box-shadow:var(--shadow);border-radius:14px;padding:12px;display:grid;position:absolute;top:52px;right:0}.mobile-menu nav a{border-radius:8px;padding:11px 12px;font-weight:700}.mobile-menu nav 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SC,SimSun,serif;font-weight:680}.hero-lead{color:#3d4944;max-width:590px;font-size:1.13rem}.hero-actions{align-items:center;gap:26px;margin-top:34px;display:flex}.hero-assurance{color:#4b5953;gap:25px;margin-top:45px;font-size:.83rem;display:flex}.hero-assurance span{align-items:center;gap:7px;display:flex}.section{padding-block:98px}.section-heading{margin-bottom:42px}.section-heading h2{max-width:710px;margin-bottom:0;font-family:Noto Serif SC,Songti SC,SimSun,serif}.section-heading.split{justify-content:space-between;align-items:flex-end;gap:60px;display:flex}.section-heading.split>p{max-width:420px;color:var(--muted);margin-bottom:6px}.track-grid{border-top:1px solid var(--line);border-left:1px solid var(--line);grid-template-columns:repeat(4,1fr);display:grid}.track-card{border-right:1px solid var(--line);border-bottom:1px solid var(--line);min-height:320px;padding:34px 28px;transition:background .25s,color .25s,transform 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