.site-header:where(.astro-fzpbxy5g){z-index:100;height:var(--header-height);border-bottom:1px solid color-mix(in srgb, var(--color-border) 78%, transparent);background:color-mix(in srgb, var(--color-bg) 82%, transparent);backdrop-filter:blur(14px);position:sticky;top:0}.header-inner:where(.astro-fzpbxy5g){align-items:center;gap:32px;height:100%;display:flex}.brand:where(.astro-fzpbxy5g){color:var(--color-text);flex:none;align-items:center;gap:11px;font-size:1.08rem;font-weight:800;text-decoration:none;display:inline-flex}.brand-mark:where(.astro-fzpbxy5g){background:linear-gradient(135deg,#3b82f6,#2563eb 55%,#1d4ed8);border-radius:10px;align-content:center;gap:4px;width:36px;height:36px;padding:8px;display:grid;box-shadow:0 8px 18px #2563eb47,inset 0 1px #ffffff40}.brand-mark:where(.astro-fzpbxy5g) span:where(.astro-fzpbxy5g){background:#fff;border-radius:2px;height:2px;display:block}.brand-mark:where(.astro-fzpbxy5g) span:where(.astro-fzpbxy5g):nth-child(2){width:75%}.brand-mark:where(.astro-fzpbxy5g) span:where(.astro-fzpbxy5g):nth-child(3){width:52%}.desktop-nav:where(.astro-fzpbxy5g){align-items:stretch;gap:2px;height:100%;margin-left:auto;display:flex}.desktop-nav:where(.astro-fzpbxy5g) a:where(.astro-fzpbxy5g){color:var(--color-text-muted);white-space:nowrap;place-items:center;padding-inline:13px;font-size:.94rem;font-weight:600;text-decoration:none;transition:color .18s;display:grid;position:relative}.desktop-nav:where(.astro-fzpbxy5g) a:where(.astro-fzpbxy5g):after{content:"";background:0 0;border-radius:2px 2px 0 0;height:2px;transition:background .18s;position:absolute;bottom:-1px;left:13px;right:13px}.desktop-nav:where(.astro-fzpbxy5g) a:where(.astro-fzpbxy5g):hover,.desktop-nav:where(.astro-fzpbxy5g) a:where(.astro-fzpbxy5g)[aria-current=page]{color:var(--color-text)}.desktop-nav:where(.astro-fzpbxy5g) a:where(.astro-fzpbxy5g)[aria-current=page]:after{background:linear-gradient(90deg,#3b82f6,#2563eb)}.header-actions:where(.astro-fzpbxy5g){align-items:center;gap:10px;display:flex}.header-cta:where(.astro-fzpbxy5g){min-height:42px;padding:9px 16px;font-size:.92rem}.icon-button:where(.astro-fzpbxy5g){width:44px;height:44px;color:var(--color-text-muted);cursor:pointer;background:0 0;border:1px solid #0000;border-radius:10px;place-items:center;padding:0;display:grid}.icon-button:where(.astro-fzpbxy5g):hover{color:var(--color-text);background:var(--color-bg-soft);border-color:var(--color-border)}.menu-toggle:where(.astro-fzpbxy5g),.moon-icon:where(.astro-fzpbxy5g),[data-theme=dark] .sun-icon:where(.astro-fzpbxy5g){display:none}[data-theme=dark] .moon-icon:where(.astro-fzpbxy5g){display:block}.mobile-nav:where(.astro-fzpbxy5g){border-bottom:1px solid var(--color-border);background:var(--color-bg);width:100%;box-shadow:var(--shadow-sm);padding:14px 0 20px;position:absolute;top:100%}.mobile-nav:where(.astro-fzpbxy5g)[hidden]{display:none}.mobile-nav:where(.astro-fzpbxy5g) .container:where(.astro-fzpbxy5g){gap:4px;display:grid}.mobile-nav:where(.astro-fzpbxy5g) a:where(.astro-fzpbxy5g):not(.button){min-height:48px;color:var(--color-text-muted);border-radius:9px;align-items:center;padding:10px 12px;font-weight:650;text-decoration:none;display:flex}.mobile-nav:where(.astro-fzpbxy5g) a:where(.astro-fzpbxy5g)[aria-current=page]{color:var(--color-primary);background:var(--color-primary-soft)}.mobile-nav:where(.astro-fzpbxy5g) .button:where(.astro-fzpbxy5g){margin-top:8px}@media (width<=820px){.desktop-nav:where(.astro-fzpbxy5g),.header-actions:where(.astro-fzpbxy5g) .header-cta:where(.astro-fzpbxy5g),.header-actions:where(.astro-fzpbxy5g) .auth-control{display:none}.header-actions:where(.astro-fzpbxy5g){margin-left:auto}.menu-toggle:where(.astro-fzpbxy5g){display:grid}.menu-toggle:where(.astro-fzpbxy5g) .close-icon:where(.astro-fzpbxy5g),.menu-toggle:where(.astro-fzpbxy5g)[aria-expanded=true] .menu-icon:where(.astro-fzpbxy5g){display:none}.menu-toggle:where(.astro-fzpbxy5g)[aria-expanded=true] .close-icon:where(.astro-fzpbxy5g){display:block}}.site-footer:where(.astro-nns7i3if){border-top:1px solid var(--color-border);background:var(--color-bg-soft);padding-top:64px}.footer-grid:where(.astro-nns7i3if){grid-template-columns:1.8fr 1fr 1fr;gap:64px;padding-bottom:52px;display:grid}.footer-brand:where(.astro-nns7i3if){max-width:430px}.brand-link:where(.astro-nns7i3if){font-size:1.2rem;font-weight:800;text-decoration:none}.site-footer:where(.astro-nns7i3if) p:where(.astro-nns7i3if){color:var(--color-text-muted)}.footer-grid:where(.astro-nns7i3if) h2:where(.astro-nns7i3if){margin:0 0 14px;font-size:.9rem}.footer-grid:where(.astro-nns7i3if) ul:where(.astro-nns7i3if){gap:8px;margin:0;padding:0;list-style:none;display:grid}.footer-grid:where(.astro-nns7i3if) li:where(.astro-nns7i3if) a:where(.astro-nns7i3if){min-height:36px;color:var(--color-text-muted);align-items:center;gap:6px;text-decoration:none;display:inline-flex}.footer-grid:where(.astro-nns7i3if) li:where(.astro-nns7i3if) a:where(.astro-nns7i3if):hover{color:var(--color-primary)}.footer-bottom:where(.astro-nns7i3if){border-top:1px solid var(--color-border);justify-content:space-between;gap:24px;padding-block:22px;font-size:.86rem;display:flex}.footer-bottom:where(.astro-nns7i3if) p:where(.astro-nns7i3if){margin:0}@media (width<=700px){.footer-grid:where(.astro-nns7i3if){grid-template-columns:1fr;gap:32px}.footer-bottom:where(.astro-nns7i3if){display:block}}.wechat-card{--wc-border:#bfdbfe;--wc-bg:#eff6ff;--wc-text:#172033;--wc-muted:#526079;--wc-accent:#1d4ed8;--wc-button-border:#bfdbfe;--wc-button-bg:#fff;border:1px solid var(--wc-border);background:var(--wc-bg);border-radius:14px;align-items:center;gap:22px;max-width:560px;padding:22px 24px;display:flex}:root[data-theme=dark] .wechat-card{--wc-border:#1e3a8a;--wc-bg:#172554;--wc-text:#f1f5f9;--wc-muted:#aab7ca;--wc-accent:#93c5fd;--wc-button-border:#1e3a8a;--wc-button-bg:#ffffff12}.wechat-card .wechat-qrcode{background:#fff;border-radius:10px;flex:none;width:128px;height:128px;padding:7px;box-shadow:0 2px 10px #0f172a1f}.wechat-card .wechat-info{min-width:0}.wechat-card .wechat-title{color:var(--wc-text);align-items:center;gap:8px;margin:0 0 8px;font-size:1.02rem;font-weight:800;display:flex}.wechat-card .wechat-title svg{color:var(--wc-accent);flex:none}.wechat-card .wechat-id-row{flex-wrap:wrap;align-items:center;gap:6px 8px;margin:0 0 8px;display:flex}.wechat-card .wechat-id-label{color:var(--wc-muted);font-size:.9rem}.wechat-card .wechat-id{color:var(--wc-accent);letter-spacing:.02em;font-size:1.3rem;font-weight:800}.wechat-card .wechat-id-name{color:var(--wc-muted);font-size:.9rem}.wechat-card .wechat-copy{min-height:30px;color:var(--wc-accent);border:1px solid var(--wc-button-border);background:var(--wc-button-bg);cursor:pointer;border-radius:999px;align-items:center;gap:5px;margin-left:2px;padding:4px 11px;font-size:.8rem;font-weight:700;transition:border-color .15s,color .15s;display:inline-flex}.wechat-card .wechat-copy:hover{border-color:#93c5fd}.wechat-card .wechat-copy[data-copied=true]{color:#15803d;border-color:currentColor}:root[data-theme=dark] .wechat-card .wechat-copy[data-copied=true]{color:#4ade80}.wechat-card .wechat-note{color:var(--wc-muted);margin:0;font-size:.9rem;line-height:1.6}@media (width<=460px){.wechat-card{align-items:flex-start;gap:18px;padding:18px}.wechat-card .wechat-qrcode{width:108px;height:108px}.wechat-card .wechat-id{font-size:1.15rem}}:root{color-scheme:light;--color-primary:#2563eb;--color-primary-hover:#1d4ed8;--color-primary-soft:#eff6ff;--color-text:#172033;--color-text-muted:#526079;--color-bg:#fff;--color-bg-soft:#f7f9fc;--color-surface:#fff;--color-border:#dfe5ee;--color-success:#15803d;--shadow-sm:0 1px 2px #0f172a0a, 0 8px 24px #0f172a0f;--shadow-md:0 18px 45px #0f172a1c;--radius-sm:10px;--radius-md:14px;--radius-lg:20px;--max-width:1200px;--header-height:72px;--font-sans:Inter, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif}:root[data-theme=dark]{color-scheme:dark;--color-primary:#60a5fa;--color-primary-hover:#93c5fd;--color-primary-soft:#172554;--color-text:#f1f5f9;--color-text-muted:#aab7ca;--color-bg:#0b1120;--color-bg-soft:#111827;--color-surface:#151e2e;--color-border:#2b3a50;--color-success:#4ade80;--shadow-sm:0 1px 2px #0003, 0 8px 24px #00000029;--shadow-md:0 18px 45px #00000047}*,:before,:after{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:calc(var(--header-height) + 24px)}body{background:var(--color-bg);min-width:320px;color:var(--color-text);font-family:var(--font-sans);text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;margin:0;font-size:16px;line-height:1.65;overflow-x:hidden}a{color:inherit}img,svg{max-width:100%;display:block}button,input,textarea,select{font:inherit}button,summary,a{-webkit-tap-highlight-color:transparent}:focus-visible{outline-offset:3px;border-radius:6px;outline:3px solid #93c5fd}.skip-link{z-index:1000;color:#fff;background:#1d4ed8;border-radius:8px;padding:10px 14px;transition:top .18s;position:fixed;top:-80px;left:16px}.skip-link:focus{top:12px}.container{width:min(calc(100% - 40px), var(--max-width));margin-inline:auto}.section{padding-block:96px}.section--soft{background:var(--color-bg-soft)}.eyebrow{color:var(--color-primary-hover);letter-spacing:.06em;align-items:center;gap:8px;margin:0 0 14px;font-size:.88rem;font-weight:700;display:inline-flex}.eyebrow:before{content:"";background:currentColor;width:22px;height:2px}.section-heading{max-width:680px;margin-bottom:44px}.section-heading h2{letter-spacing:-.035em;margin:0 0 14px;font-size:clamp(2rem,4vw,3rem);line-height:1.18}.section-heading p{color:var(--color-text-muted);margin:0;font-size:1.08rem}.button{cursor:pointer;border:1px solid #0000;border-radius:10px;justify-content:center;align-items:center;gap:9px;min-height:48px;padding:11px 20px;font-weight:700;line-height:1.2;text-decoration:none;transition:transform .18s,background .18s,border-color .18s,box-shadow .18s;display:inline-flex}.button:hover{transform:translateY(-1px)}.button--primary{color:#fff;background:linear-gradient(135deg,#3b82f6,#2563eb 52%,#1d4ed8);overflow:hidden;box-shadow:0 8px 22px #2563eb42,inset 0 1px #ffffff2e}.button--primary:after{content:"";background:linear-gradient(100deg,#0000,#ffffff47,#0000);width:46%;transition:left .45s;position:absolute;top:0;bottom:0;left:-80%;transform:skew(-18deg)}.button--primary{position:relative}.button--primary:hover{background:linear-gradient(135deg,#4f8dfd,#2f6ceb 52%,#1e56d6);box-shadow:0 10px 26px #2563eb52,inset 0 1px #ffffff2e}.button--primary:hover:after{left:130%}.button--secondary{color:var(--color-text);background:var(--color-surface);border-color:var(--color-border)}.button--secondary:hover{background:var(--color-bg-soft);border-color:#93a4bd}.card{border:1px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-surface);box-shadow:var(--shadow-sm);transition:border-color .2s,box-shadow .2s,transform .2s}.card:hover{border-color:color-mix(in srgb, var(--color-primary) 26%, var(--color-border));box-shadow:0 12px 30px #0f172a17}.icon-box{color:#2563eb;background:linear-gradient(140deg,#dbeafe,#eff6ff 55%,#e0eaff);border:1px solid #d3e3fb;border-radius:12px;place-items:center;width:44px;height:44px;display:grid;box-shadow:inset 0 1px #fffc}:root[data-theme=dark] .icon-box{color:#93c5fd;box-shadow:none;background:linear-gradient(140deg,#1e3a8a,#172554);border-color:#1d4ed8}@keyframes fade-up{0%{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}.anim-up{animation:.65s cubic-bezier(.22,.7,.3,1) both fade-up}.delay-1{animation-delay:80ms}.delay-2{animation-delay:.16s}.delay-3{animation-delay:.24s}.delay-4{animation-delay:.32s}@keyframes float-y{0%,to{transform:translateY(0)}50%{transform:translateY(-9px)}}.sr-only{clip:rect(0,0,0,0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}@media (width<=768px){.container{width:min(calc(100% - 32px), var(--max-width))}.section{padding-block:68px}.section-heading{margin-bottom:30px}}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,:before,:after{transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}