:root{--jd-ink:#0f172a;--jd-ink-2:#334155;--jd-muted:#64748b;--jd-line:#e2e8f0;--jd-line-soft:#f1f5f9;--jd-paper:#f8fafc;--jd-white:#fff;--jd-teal:#0f766e;--jd-teal-deep:#0b5f59;--jd-teal-soft:#ccfbf1;--jd-mint:#2dd4bf;--jd-amber:#d97706;--jd-footer:#0b1220;--jd-radius:14px;--jd-radius-sm:8px;--jd-shadow:0 18px 48px #0f172a14;--jd-shadow-sm:0 6px 18px #0f172a0d;--jd-header-h:72px;--jd-hero-h:calc(min(92vh, 760px));--jd-container:1120px;--jd-ease:cubic-bezier(.22, 1, .36, 1);--font:"Noto Sans SC", "PingFang SC", "Hiragino Sans GB", sans-serif;--font-display:"Plus Jakarta Sans", "Noto Sans SC", sans-serif;--yd-blue:var(--jd-teal);--yd-blue-dark:var(--jd-teal-deep);--yd-blue-deep:var(--jd-teal-deep);--yd-blue-soft:var(--jd-teal-soft);--yd-blue-mist:#f0fdfa;--yd-ink:var(--jd-ink);--yd-ink-2:var(--jd-ink-2);--yd-muted:var(--jd-muted);--yd-muted-2:#94a3b8;--yd-line:var(--jd-line);--yd-line-soft:var(--jd-line-soft);--yd-bg:var(--jd-white);--yd-bg-soft:var(--jd-paper);--yd-footer:var(--jd-footer);--yd-footer-2:#111827;--yd-radius:var(--jd-radius-sm);--yd-radius-sm:6px;--yd-radius-lg:var(--jd-radius);--yd-shadow:var(--jd-shadow);--yd-shadow-sm:var(--jd-shadow-sm);--yd-shadow-lg:0 28px 64px #0f172a1f;--yd-header-h:var(--jd-header-h);--yd-hero-h:var(--jd-hero-h);--yd-container:var(--jd-container);--yd-ease:var(--jd-ease);--font-brand:var(--font-display)}*,:after,:before{box-sizing:border-box}html{scroll-behavior:smooth}body,html{font-family:var(--font);color:var(--jd-ink);background:radial-gradient(900px 420px at 12% -8%,#2dd4bf24,transparent 55%),radial-gradient(700px 360px at 100% 0,#0f766e14,transparent 50%),var(--jd-white);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizelegibility;margin:0;padding:0}body{font-size:16px;line-height:1.65}::selection{background:#0f766e29}a{color:inherit;transition:color .18s var(--jd-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 #0f766e73}.container{width:min(var(--jd-container),100% - 64px);margin:0 auto}.btn{border-radius:var(--jd-radius-sm);cursor:pointer;min-width:112px;height:44px;font-family:var(--font-display);letter-spacing:-.01em;transition:background .18s var(--jd-ease),border-color .18s var(--jd-ease),color .18s var(--jd-ease),transform .18s var(--jd-ease),box-shadow .18s var(--jd-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 18px;font-size:14px;font-weight:600;display:inline-flex}.btn:active{transform:translateY(1px)}.btn-l,.btn-primary{background:var(--jd-teal);color:#fff;border-color:var(--jd-teal);box-shadow:0 10px 24px #0f766e38}.btn-l:hover,.btn-primary:hover{background:var(--jd-teal-deep);border-color:var(--jd-teal-deep)}.btn-ghost,.btn-r{color:var(--jd-teal-deep);box-shadow:none;background:0 0;border-color:#0f766e59}.btn-ghost:hover,.btn-r:hover{background:#0f766e0f}.btn-lg{min-width:148px;height:52px;padding:0 26px;font-size:15px}.btn:disabled{opacity:.55;cursor:not-allowed;transform:none}.section{padding:88px 0;position:relative}.main-title,.section-title{font-family:var(--font-display);letter-spacing:-.03em;color:var(--jd-ink);text-align:center;margin:0 0 12px;font-size:calc(clamp(28px,3.2vw,40px));font-weight:700;line-height:1.2}.section-sub{text-align:center;max-width:560px;color:var(--jd-muted);margin:0 auto 40px;font-size:16px;font-weight:400;line-height:1.7}.card{border:1px solid var(--jd-line);border-radius:var(--jd-radius);box-shadow:none;transition:transform .2s var(--jd-ease),border-color .2s var(--jd-ease),box-shadow .2s var(--jd-ease);background:#fff}.card-hover:hover{box-shadow:var(--jd-shadow-sm);border-color:#0f766e47;transform:translateY(-2px)}.page-hero{text-align:center;background:radial-gradient(720px 320px at 50% -10%,#2dd4bf2e,#0000 70%),linear-gradient(#ecfeff,#f8fafc 48%,#fff);padding:120px 0 56px;position:relative;overflow:hidden}.page-hero h1{font-family:var(--font-display);color:var(--jd-ink);letter-spacing:-.03em;margin:0 0 14px;font-size:calc(clamp(28px,3.5vw,40px));font-weight:700;line-height:1.2;position:relative}.page-hero p{max-width:640px;color:var(--jd-muted);margin:0 auto;font-size:16px;line-height:1.75;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 .7s var(--jd-ease) both}@keyframes fade-up{0%{opacity:0;transform:translateY(16px)}to{opacity:1;transform:none}}@keyframes drift{0%,to{transform:translateZ(0)scale(1)}50%{transform:translate(2%,-1.5%)scale(1.04)}}@media (width<=860px){.container{width:min(var(--jd-container),100% - 40px)}.section{padding:64px 0}.main-title,.section-title{font-size:26px}}