:root{--yd-blue:#5b89fe;--yd-blue-dark:#4a78f0;--yd-blue-deep:#3d6fe0;--yd-blue-soft:#edf0ff;--yd-blue-mist:#f3f7ff;--yd-ink:#272e47;--yd-ink-2:#4e5a70;--yd-muted:#606266;--yd-muted-2:#909399;--yd-line:#e5eaf2;--yd-line-soft:#eef2f8;--yd-bg:#fff;--yd-bg-soft:#f4f7ff;--yd-footer:#1a1a1a;--yd-footer-2:#222;--yd-success:#16a34a;--yd-warning:#f0b429;--yd-radius:8px;--yd-radius-sm:4px;--yd-radius-lg:12px;--yd-shadow:0 8px 24px #272e4714;--yd-shadow-sm:0 2px 8px #272e470f;--yd-shadow-lg:0 16px 40px #272e471f;--yd-header-h:80px;--yd-hero-h:500px;--yd-container:1160px;--yd-ease:cubic-bezier(.22, 1, .36, 1);--font:"PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;--font-brand:var(--font)}*,:after,:before{box-sizing:border-box}html{scroll-behavior:smooth}body,html{font-family:var(--font);color:var(--yd-ink);background:var(--yd-bg);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizelegibility;margin:0;padding:0}body{font-size:16px;line-height:1.6}::selection{background:#5b89fe2e}a{color:inherit;transition:color .15s var(--yd-ease);text-decoration:none}button,input,select,textarea{font:inherit;color:inherit}img{max-width:100%;display:block}:focus-visible{outline-offset:2px;outline:2px solid #5b89fe8c}.container{width:min(var(--yd-container),100% - 48px);margin:0 auto}.btn{border-radius:var(--yd-radius-sm);cursor:pointer;letter-spacing:0;min-width:110px;height:35px;transition:background .15s var(--yd-ease),border-color .15s var(--yd-ease),color .15s var(--yd-ease),box-shadow .15s var(--yd-ease);white-space:nowrap;-webkit-user-select:none;user-select:none;border:1px solid #0000;justify-content:center;align-items:center;gap:8px;padding:0 16px;font-size:14px;font-weight:400;line-height:33px;display:inline-flex}.btn:active{opacity:.92}.btn-l,.btn-primary{background:var(--yd-blue);color:#fff;border-color:var(--yd-blue);box-shadow:none}.btn-l:hover,.btn-primary:hover{background:var(--yd-blue-dark);border-color:var(--yd-blue-dark)}.btn-ghost,.btn-r{color:var(--yd-blue);border-color:var(--yd-blue);box-shadow:none;background:0 0}.btn-ghost:hover,.btn-r:hover{background:#5b89fe14}.btn-lg{min-width:140px;height:49px;padding:0 28px;font-size:16px;line-height:47px}.btn:disabled{opacity:.55;cursor:not-allowed}.section{padding:0;position:relative}.main-title,.section-title{text-align:center;color:#333;letter-spacing:0;margin:90px 0 6px;font-size:32px;font-weight:600;line-height:45px}.section-sub{text-align:center;max-width:720px;color:var(--yd-ink-2);margin:0 auto 44px;font-size:16px;font-weight:400;line-height:1.75}.tag-pill{border-radius:var(--yd-radius-sm);background:var(--yd-blue-soft);color:var(--yd-blue);align-items:center;gap:6px;padding:6px 12px;font-size:12px;font-weight:500;display:inline-flex}.card{border-radius:var(--yd-radius);box-shadow:var(--yd-shadow-sm);transition:transform .2s var(--yd-ease),box-shadow .2s var(--yd-ease);background:#fff;border:1px solid #0000}.card-hover:hover{box-shadow:var(--yd-shadow);transform:translateY(-2px)}.page-hero{text-align:center;background:radial-gradient(720px 320px at 50% -10%,#5b89fe29,#0000 70%),linear-gradient(#eaf1ff,#f7f9ff 48%,#fff);padding:120px 0 48px;position:relative;overflow:hidden}.page-hero h1{color:var(--yd-ink);margin:0 0 14px;font-size:calc(clamp(28px,3.5vw,36px));font-weight:600;line-height:1.25;position:relative}.page-hero p{max-width:720px;color:var(--yd-ink-2);margin:0 auto;font-size:16px;line-height:1.8;position:relative}.page-hero .actions{flex-wrap:wrap;justify-content:center;gap:12px;margin-top:28px;display:flex;position:relative}.fade-up{animation:fade-up .6s var(--yd-ease) both}@keyframes fade-up{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}@media (width<=860px){.container{width:min(var(--yd-container),100% - 32px)}.main-title,.section-title{margin:56px 0 6px;font-size:26px;line-height:1.35}}