:root{--bg:#f4f6f9;--card:#fff;--border:#dfe5ec;--border-strong:#c9d2dd;--text:#1a2733;--heading:#0e1c2b;--muted:#64748b;--primary:#1f5bc4;--primary-dark:#18479e;--primary-soft:#e8effb;--danger:#c0392b;--danger-soft:#fbeae8;--success:#177a4c;--success-soft:#e6f4ec;--warning:#a15c07;--warning-soft:#fdf2e0;--radius:12px;--radius-sm:8px;--shadow-sm:0 1px 2px rgba(14,28,43,.05);--shadow-md:0 1px 2px rgba(14,28,43,.04),0 4px 12px rgba(14,28,43,.06);--shadow-lg:0 8px 28px rgba(14,28,43,.12)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;font-size:14px;line-height:1.65;font-feature-settings:"tnum";font-variant-numeric:tabular-nums;-webkit-font-smoothing:antialiased}h1,h2,h3{color:var(--heading);letter-spacing:-.01em}a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}.container{max-width:1024px;margin:0 auto;padding:24px 20px 48px}.skip-link{position:absolute;left:-999px;top:0;background:var(--heading);color:#fff;padding:8px 16px;border-radius:0 0 var(--radius-sm) 0;z-index:100}.skip-link:focus{left:0;text-decoration:none}:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px}.topnav{background:hsla(0,0%,100%,.92);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--border);position:-webkit-sticky;position:sticky;top:0;z-index:10}.topnav-inner{display:flex;align-items:center;gap:20px;padding-top:0;padding-bottom:0;height:58px}.brand{display:inline-flex;align-items:center;gap:9px;font-weight:700;font-size:15px;color:var(--heading);white-space:nowrap}.brand:hover{text-decoration:none}.brand-mark{display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:8px;background:var(--heading);color:#fff;flex:none}.nav-links{display:flex;gap:2px;flex:1 1}.nav-links a{color:var(--muted);padding:6px 12px;border-radius:var(--radius-sm);text-decoration:none;font-weight:500;transition:color .15s ease,background .15s ease}.nav-links a:hover{background:var(--bg);color:var(--text)}.nav-links a.active{color:var(--primary);background:var(--primary-soft);font-weight:600}.nav-right{display:flex;align-items:center;gap:12px}.balance{font-weight:600;color:var(--text);white-space:nowrap;padding:5px 12px;border:1px solid var(--border);border-radius:999px;background:var(--card);font-size:13px;transition:border-color .15s ease,box-shadow .15s ease}.balance:hover{text-decoration:none;border-color:var(--primary);box-shadow:var(--shadow-sm)}.footer{border-top:1px solid var(--border);margin-top:32px;background:var(--card)}.footer-inner{display:flex;flex-wrap:wrap;align-items:center;gap:8px 20px;padding-top:18px;padding-bottom:18px;color:var(--muted);font-size:12.5px}.footer-inner .spacer{flex:1 1}.footer-inner a{color:var(--muted)}.footer-inner a:hover{color:var(--text)}.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:20px;margin-bottom:16px;box-shadow:var(--shadow-sm)}.card h2{font-size:16px}.card h2,.card h3{margin-top:0;font-weight:650}.card h3{font-size:15px}.card-clickable{transition:box-shadow .18s ease,border-color .18s ease,transform .18s ease}.card-clickable:hover{box-shadow:var(--shadow-md);border-color:var(--border-strong);transform:translateY(-1px)}.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));grid-gap:16px;gap:16px;align-items:stretch}.grid>.card{display:flex;flex-direction:column;margin-bottom:0}.grid>.card .card-footer{margin-top:auto}.trust-hero{background:linear-gradient(135deg,#0e1c2b,#16324f);color:#e8eef5;border-radius:var(--radius);padding:28px 28px 24px;margin-bottom:20px;box-shadow:var(--shadow-md)}.trust-hero h1{color:#fff;font-size:22px;font-weight:700;margin:0 0 6px}.trust-hero .sub{color:#a8bcd2;margin:0 0 20px;max-width:560px}.trust-items{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));grid-gap:12px;gap:12px}.trust-item{display:flex;gap:10px;align-items:flex-start;background:hsla(0,0%,100%,.06);border:1px solid hsla(0,0%,100%,.1);border-radius:var(--radius-sm);padding:12px 14px}.trust-item svg{flex:none;margin-top:2px;color:#7fd3a8}.trust-item strong{display:block;color:#fff;font-size:13.5px;margin-bottom:2px}.trust-item span{color:#a8bcd2;font-size:12.5px;line-height:1.5}.field{margin-bottom:14px}.field label{display:block;margin-bottom:5px;font-weight:550;font-size:13.5px}.field .hint{color:var(--muted);font-size:12px;font-weight:400}input,select,textarea{width:100%;padding:9px 11px;border:1px solid var(--border-strong);border-radius:var(--radius-sm);font-size:14px;font-family:inherit;background:#fff;color:var(--text);transition:border-color .15s ease,box-shadow .15s ease}input:hover,select:hover,textarea:hover{border-color:#aab8c8}input:focus,select:focus,textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(31,91,196,.16)}textarea{resize:vertical;min-height:76px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:9px 18px;border:1px solid transparent;border-radius:var(--radius-sm);background:var(--primary);color:#fff;font-size:14px;font-weight:550;font-family:inherit;cursor:pointer;transition:background .15s ease,box-shadow .15s ease,transform .1s ease,border-color .15s ease}.btn,.btn:hover{text-decoration:none}.btn:hover{background:var(--primary-dark);box-shadow:0 2px 8px rgba(31,91,196,.3)}.btn:active{transform:scale(.98);box-shadow:none}.btn:disabled{background:#c3cad4;cursor:not-allowed;box-shadow:none;transform:none}.btn-ghost{background:transparent;color:var(--text);border-color:var(--border-strong)}.btn-ghost:hover{background:var(--bg);border-color:#aab8c8;box-shadow:none}.btn-danger{background:var(--danger)}.btn-danger:hover{background:#a5301f;box-shadow:0 2px 8px rgba(192,57,43,.3)}.btn-sm{padding:5px 12px;font-size:13px;font-weight:500}.btn-block{width:100%}.alert{padding:11px 14px;border-radius:var(--radius-sm);margin-bottom:14px;font-size:13.5px;border:1px solid transparent}.alert-error{background:var(--danger-soft);color:var(--danger);border-color:#f0c9c3}.alert-info{background:var(--primary-soft);color:var(--primary-dark);border-color:#c6d8f2}.alert-success{background:var(--success-soft);color:var(--success);border-color:#bfe3cf}.muted{color:var(--muted)}code{background:#eef1f5;border:1px solid var(--border);border-radius:5px;padding:1px 6px;font-size:13px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace}.error-text{color:var(--danger);font-size:13px}.badge{display:inline-flex;align-items:center;gap:5px;padding:2px 10px;border-radius:999px;font-size:12px;font-weight:550;background:#eceff3;color:var(--text);white-space:nowrap}.badge:before{content:"";width:6px;height:6px;border-radius:50%;background:currentColor;opacity:.55}.badge-green{background:var(--success-soft);color:var(--success)}.badge-red{background:var(--danger-soft);color:var(--danger)}.badge-yellow{background:var(--warning-soft);color:var(--warning)}.badge-blue{background:var(--primary-soft);color:var(--primary-dark)}table.list{width:100%;border-collapse:collapse}table.list td,table.list th{text-align:left;padding:9px 10px;border-bottom:1px solid var(--border);vertical-align:top}table.list th{color:var(--muted);font-weight:550;font-size:12.5px;letter-spacing:.01em}table.list tbody tr:last-child td{border-bottom:none}table.list tbody tr{transition:background .12s ease}table.list tbody tr:hover{background:#f8fafc}.strategy-cards{display:grid;grid-template-columns:repeat(3,1fr);grid-gap:10px;gap:10px}.strategy-card{border:1px solid var(--border-strong);border-radius:var(--radius);padding:14px;cursor:pointer;background:#fff;transition:border-color .15s ease,box-shadow .15s ease,transform .1s ease}.strategy-card:hover{border-color:var(--primary);box-shadow:var(--shadow-sm)}.strategy-card:active{transform:scale(.99)}.strategy-card.selected{border-color:var(--primary);background:var(--primary-soft);box-shadow:0 0 0 3px rgba(31,91,196,.14)}.strategy-card .price{font-size:18px;font-weight:700;color:var(--heading);margin:6px 0 4px}.strategy-card .desc{color:var(--muted);font-size:12.5px;line-height:1.5}.steps{display:flex;flex-wrap:wrap;gap:4px;align-items:center;margin:8px 0}.steps .step{padding:3px 9px;border-radius:6px;background:#eceff3;color:var(--muted);font-size:12px;font-weight:500}.steps .step.done{background:var(--primary-soft);color:var(--primary-dark)}.steps .step.current{background:var(--primary);color:#fff;box-shadow:0 1px 4px rgba(31,91,196,.4)}.steps .step.failed{background:var(--danger-soft);color:var(--danger)}.steps .arrow{color:var(--border-strong);font-size:12px}.skeleton{position:relative;overflow:hidden;background:#e8edf2;border-radius:6px;min-height:14px}.skeleton:after{content:"";position:absolute;inset:0;transform:translateX(-100%);background:linear-gradient(90deg,transparent,hsla(0,0%,100%,.7),transparent);animation:shimmer 1.4s infinite}@keyframes shimmer{to{transform:translateX(100%)}}.skeleton-card{border:1px solid var(--border);border-radius:var(--radius);padding:20px;margin-bottom:16px}.empty,.skeleton-card{background:var(--card)}.empty{text-align:center;padding:48px 24px;border:1px dashed var(--border-strong);border-radius:var(--radius);color:var(--muted)}.empty strong{display:block;color:var(--text);font-size:15px;margin-bottom:4px}.empty .btn{margin-top:14px}.escrow-note{display:flex;gap:10px;align-items:flex-start;background:var(--primary-soft);border:1px solid #c6d8f2;border-radius:var(--radius-sm);padding:11px 14px;color:var(--primary-dark);font-size:13px;line-height:1.55;margin-bottom:16px}.escrow-note svg{flex:none;margin-top:2px}.pairing-code{font-size:40px;font-weight:700;letter-spacing:6px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;color:var(--heading);margin:12px 0 4px}.auth-page{max-width:400px;margin:64px auto}.auth-brand{text-align:center;margin-bottom:20px}.auth-brand .brand-mark{width:44px;height:44px;border-radius:12px;margin-bottom:10px}.auth-brand h1{font-size:20px;margin:0 0 4px}.auth-brand p{margin:0;color:var(--muted);font-size:13px}.auth-page .card{padding:26px 24px;box-shadow:var(--shadow-md)}.auth-note{justify-content:center;gap:6px;color:var(--muted);font-size:12px;margin-top:14px}.auth-note,.page-title{display:flex;align-items:center}.page-title{justify-content:space-between;gap:12px;margin-bottom:16px}.page-title h1{margin:0;font-size:20px;font-weight:700}.row{display:flex;gap:12px;flex-wrap:wrap}.row>*{flex:1 1;min-width:120px}.tabs{display:flex;gap:4px;flex-wrap:wrap;border-bottom:1px solid var(--border);margin-bottom:16px}.tabs a{padding:9px 13px;color:var(--muted);text-decoration:none;font-weight:500;border-bottom:2px solid transparent;margin-bottom:-1px;transition:color .15s ease,border-color .15s ease}.tabs a:hover{color:var(--text)}.tabs a.active{color:var(--primary);font-weight:600;border-bottom-color:var(--primary)}.metric-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));grid-gap:12px;gap:12px;margin-bottom:16px}.metric{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:14px 16px;box-shadow:var(--shadow-sm)}.metric .metric-label{color:var(--muted);font-size:12.5px}.metric .metric-value{font-size:22px;margin-top:2px}.metric .metric-value,.money-lg{font-weight:700;color:var(--heading)}.money-lg{font-size:30px;letter-spacing:-.02em;margin:4px 0 16px}@media (max-width:640px){.nav-links a{padding:6px 8px;font-size:13px}.trust-hero{padding:20px}.strategy-cards{grid-template-columns:1fr}}