:root{--blue:#1D4ED8;--blue-deep:#1E3A8A;--off:#FAFAFA;--ink:#0A0A0A;--muted:#5b6472;--line:rgba(10,10,10,.08);--card:#ffffff;--gap:16px;--radius:16px}*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{font-family:Inter,system-ui,sans-serif;color:var(--ink);line-height:1.55;-webkit-font-smoothing:antialiased;overflow-x:hidden;background:radial-gradient(1100px 560px at 12% -8%,rgba(29,78,216,.07),transparent 60%),radial-gradient(1000px 520px at 92% 4%,rgba(99,102,241,.05),transparent 55%),#f4f6fa}html[lang=zh] body{font-family:Noto Sans SC,Inter,system-ui,sans-serif;line-height:1.7}.wrap{max-width:1180px;margin:0 auto;padding:0 20px}a{color:inherit;text-decoration:none}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:600;font-size:15px;font-family:inherit;cursor:pointer;border:none;padding:12px 20px;border-radius:12px;transition:transform .15s,box-shadow .2s,background .2s}.btn-primary{background:var(--blue);color:#fff}.btn-primary:hover{background:var(--blue-deep);transform:translateY(-1px);box-shadow:0 10px 22px -10px #1d4ed899}.btn-ghost{background:transparent;border:1px solid var(--line);color:var(--ink)}.btn-ghost:hover{border-color:var(--blue);color:var(--blue)}.ys-header{position:sticky;top:0;z-index:100;padding:12px 16px;background:transparent}.ys-bar{max-width:1180px;margin:0 auto;background:#fff;border:1px solid rgba(10,10,10,.08);border-radius:16px;box-shadow:0 4px 20px -8px #0a0a0a1f;display:flex;align-items:center;gap:14px;padding:10px 14px}.ys-logo{font-weight:600;font-size:22px;letter-spacing:-.02em;color:#1d4ed8;text-decoration:none;flex:none}.ys-nav{flex:1;display:flex;justify-content:center;gap:3px;flex-wrap:nowrap}.ys-nav a{font-size:13.5px;font-weight:500;color:#46514a;text-decoration:none;padding:7px 11px;border-radius:10px;border:1px solid rgba(10,10,10,.1);background:#fff;transition:all .15s;white-space:nowrap}.ys-nav a:hover{background:#f1f4f9;color:#1d4ed8;border-color:#1d4ed8}.ys-nav a.on{background:#e6edfc;color:#1d4ed8;border-color:#1d4ed8}.ys-wa{flex:none;font-size:13px;font-weight:600;color:#fff;background:#1dab53;text-decoration:none;padding:9px 13px;border-radius:11px;transition:background .2s}.ys-wa:hover{background:#168f44}.ys-burger{display:none;flex:none;width:44px;height:40px;border:1px solid rgba(10,10,10,.1);border-radius:10px;background:#fff;cursor:pointer;flex-direction:column;gap:4px;align-items:center;justify-content:center}.ys-burger span{width:18px;height:2px;background:#1d4ed8;border-radius:2px}.ys-mobile{display:none;flex-direction:column;gap:4px;max-width:1180px;margin:8px auto 0;background:#fff;border:1px solid rgba(10,10,10,.08);border-radius:14px;box-shadow:0 4px 20px -8px #0a0a0a1f;padding:8px}.ys-mobile.open{display:flex}.ys-mobile a{padding:11px 14px;border-radius:10px;font-size:15px;font-weight:500;color:#46514a;text-decoration:none}.ys-mobile a.on{background:#e6edfc;color:#1d4ed8}.ys-mobile .ys-wa-m{background:#1d4ed8;color:#fff;text-align:center;margin-top:4px}.ys-lang{position:relative;flex:none}.ys-lang-btn{display:inline-flex;align-items:center;gap:5px;font-family:inherit;font-size:12.5px;font-weight:600;color:#1d4ed8;background:#fff;border:1px solid rgba(10,10,10,.1);border-radius:11px;padding:8px 9px;cursor:pointer;transition:all .15s;white-space:nowrap}.ys-lang-btn:hover{border-color:#1d4ed8;background:#f1f4f9}.ys-lang-btn .glb{width:15px;height:15px;stroke:#1d4ed8;fill:none;stroke-width:1.8}.ys-lang-btn .chev{width:11px;height:11px;stroke:#1d4ed8;fill:none;stroke-width:2;transition:transform .2s}.ys-lang.open .ys-lang-btn .chev{transform:rotate(180deg)}.ys-lang-menu{position:absolute;top:calc(100% + 6px);right:0;min-width:150px;background:#fff;border:1px solid rgba(10,10,10,.1);border-radius:12px;box-shadow:0 14px 34px -12px #0a0a0a4d;padding:5px;display:none;flex-direction:column;gap:2px;z-index:200}.ys-lang.open .ys-lang-menu{display:flex}.ys-lang-menu button{display:flex;align-items:center;justify-content:space-between;gap:10px;font-family:inherit;font-size:14px;font-weight:500;color:#46514a;background:none;border:none;border-radius:9px;padding:9px 12px;cursor:pointer;text-align:left;transition:all .12s;width:100%}.ys-lang-menu button:hover{background:#f1f4f9;color:#1d4ed8}.ys-lang-menu button.on{background:#e6edfc;color:#1d4ed8;font-weight:600}.ys-lang-menu button.on:after{content:"✓";font-size:12px;color:#1d4ed8}.ys-mobile .ys-lang-row{display:flex;gap:6px;padding:2px 2px 8px;border-bottom:1px solid rgba(10,10,10,.08);margin-bottom:6px}.ys-mobile .ys-lang-row button{flex:1;font-family:inherit;font-size:13px;font-weight:600;color:#46514a;background:#f1f4f9;border:1px solid transparent;border-radius:9px;padding:9px 0;cursor:pointer;transition:all .12s}.ys-mobile .ys-lang-row button.on{background:#e6edfc;color:#1d4ed8;border-color:#1d4ed8}@media(max-width:980px){.ys-nav,.ys-wa{display:none!important}.ys-burger{display:flex!important}}@media(min-width:981px){.ys-mobile{display:none!important}}footer.ys-footer{border-top:1px solid var(--line);background:var(--card);margin-top:40px;box-shadow:0 -8px 30px -24px #1d4ed82e}.footgrid .f-legal{color:var(--muted);font-size:12.5px;margin-top:14px;line-height:1.5}.footgrid{max-width:1180px;width:100%;margin:0 auto;padding:42px 20px;display:flex;justify-content:center;gap:88px;flex-wrap:wrap;text-align:left}.footgrid .f-logo{font-weight:700;font-size:34px;color:var(--blue);letter-spacing:-.02em;line-height:1}.footgrid h4{font-size:13px;text-transform:uppercase;letter-spacing:.04em;margin-bottom:14px;font-weight:600;color:var(--ink)}.footgrid a{display:block;color:var(--muted);font-size:14.5px;margin-bottom:10px;text-decoration:none;text-align:left}.footgrid .f-addr{color:var(--muted);font-size:14px;margin-top:8px;line-height:1.4}@media(max-width:640px){.footgrid{flex-direction:column;gap:24px}}.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s cubic-bezier(.2,.7,.2,1),transform .6s cubic-bezier(.2,.7,.2,1)}.reveal.in{opacity:1;transform:none}