:root{--bg: #0d1117;--bg-card: #161b22;--bg-card2: #1c2128;--border: #30363d;--text: #e6edf3;--text-muted: #8b949e;--primary: #58a6ff;--primary-hover: #79b8ff;--success: #3fb950;--error: #f85149;--warning: #d29922;--algo-green: #00b4d8;--radius: 12px;--shadow: 0 4px 24px rgba(0,0,0,.4)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text);min-height:100vh;line-height:1.6}header{background:linear-gradient(135deg,#0d1117,#161b22);border-bottom:1px solid var(--border);padding:24px 32px;display:flex;flex-direction:column;align-items:center;text-align:center;gap:8px;position:relative}.lang-toggle{position:absolute;top:16px;right:20px;background:#58a6ff14;border:1px solid var(--primary);color:var(--primary);border-radius:20px;padding:4px 14px;font-size:.78rem;font-weight:700;cursor:pointer;letter-spacing:.06em;transition:background .2s,color .2s}.lang-toggle:hover{background:var(--primary);color:#0d1117}.logo-link{display:flex;align-items:center;margin-bottom:8px}.logo{height:40px;opacity:.85}.header-title{display:flex;align-items:center;gap:12px}.header-title h1{font-size:2rem;font-weight:700;color:var(--text)}.badge-testnet{background:#ff7b00;color:#fff;font-size:.65rem;font-weight:700;padding:2px 8px;border-radius:20px;letter-spacing:.05em;vertical-align:middle}.badge-mainnet{background:#00b347;color:#fff;font-size:.65rem;font-weight:700;padding:2px 8px;border-radius:20px;letter-spacing:.05em;vertical-align:middle}.btn-switch-network{display:inline-flex;align-items:center;gap:4px;font-size:.65rem;font-weight:700;padding:2px 8px;border-radius:20px;border:1.5px solid currentColor;text-decoration:none;vertical-align:middle;opacity:.75;transition:opacity .15s;margin-left:4px;color:inherit}.btn-switch-network:hover{opacity:1}.header-sub{color:var(--text-muted);font-size:1rem}main{max-width:760px;margin:0 auto;padding:32px 16px;display:flex;flex-direction:column;gap:24px}.card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow)}.card h2{font-size:1.2rem;font-weight:600;margin-bottom:8px}.desc{color:var(--text-muted);font-size:.92rem;margin-bottom:20px;line-height:1.6}.wallet-section{background:var(--bg-card2);border:1px solid var(--border);border-radius:var(--radius);padding:16px 20px;margin-bottom:20px}.wallet-header{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;margin-bottom:12px}.wallet-title{font-weight:600;font-size:.95rem}.wallet-connected{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.wallet-icon-small{width:20px;height:20px;border-radius:4px;object-fit:contain}.wallet-name-badge{font-size:.8rem;background:#58a6ff26;color:var(--primary);border:1px solid rgba(88,166,255,.3);padding:2px 8px;border-radius:12px;font-weight:600}.wallet-address{font-family:monospace;font-size:.85rem;color:var(--success);cursor:help}.usdc-balance{font-size:.82rem;color:var(--text-muted);background:var(--bg);padding:2px 8px;border-radius:8px;border:1px solid var(--border)}.usdc-balance .warn{color:var(--warning)}.btn-disconnect{font-size:.78rem;padding:3px 10px;border:1px solid var(--border);border-radius:8px;background:transparent;color:var(--text-muted);cursor:pointer;transition:all .15s}.btn-disconnect:hover{background:#f851491a;border-color:var(--error);color:var(--error)}.wallet-prompt{font-size:.88rem;color:var(--text-muted);margin-bottom:12px}.wallet-list{display:flex;flex-wrap:wrap;gap:10px}.wallet-loading{font-size:.85rem;color:var(--text-muted)}.wallet-btn{display:flex;align-items:center;gap:8px;padding:10px 16px;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);color:var(--text);cursor:pointer;font-size:.9rem;font-weight:500;transition:all .15s;position:relative}.wallet-btn:hover{border-color:var(--primary);background:#58a6ff0d}.wallet-btn.active{border-color:var(--success);background:#3fb95014}.wallet-btn img{width:24px;height:24px;border-radius:4px;object-fit:contain}.wallet-badge{font-size:.7rem;background:var(--success);color:#fff;padding:1px 6px;border-radius:8px;margin-left:4px}.wallet-hint{font-size:.78rem;color:var(--text-muted);margin-top:10px;line-height:1.5}.wallet-error{display:flex;align-items:center;gap:8px;margin-top:10px;padding:8px 12px;background:#f8514914;border:1px solid rgba(248,81,73,.3);border-radius:8px;font-size:.85rem;color:var(--error)}.btn-close{margin-left:auto;background:none;border:none;color:var(--text-muted);cursor:pointer;font-size:1.2rem;line-height:1;padding:0 4px}.drop-zone{border:2px dashed var(--border);border-radius:var(--radius);padding:40px;text-align:center;cursor:pointer;transition:all .2s;margin-bottom:16px}.drop-zone:hover,.drop-zone.drag-over{border-color:var(--primary);background:#58a6ff0a}.drop-zone.small{padding:20px}.drop-icon{font-size:2.5rem;margin-bottom:8px}.drop-sub{color:var(--text-muted);font-size:.85rem;margin:4px 0}.btn-primary{display:inline-flex;align-items:center;gap:8px;background:var(--primary);color:#0d1117;border:none;border-radius:var(--radius);padding:12px 24px;font-size:.95rem;font-weight:600;cursor:pointer;transition:background .15s;text-decoration:none}.btn-primary:hover{background:var(--primary-hover)}.btn-primary:disabled{background:#30363d;color:#8b949e;cursor:not-allowed}.btn-secondary{display:inline-flex;align-items:center;gap:6px;background:var(--bg-card2);color:var(--text);border:1px solid var(--border);border-radius:var(--radius);padding:10px 20px;font-size:.9rem;font-weight:500;cursor:pointer;transition:all .15s;text-decoration:none}.btn-secondary:hover{border-color:var(--primary);color:var(--primary)}.file-preview{display:flex;flex-direction:column;gap:16px}.file-info{display:flex;align-items:center;gap:12px;padding:12px;background:var(--bg-card2);border-radius:8px;border:1px solid var(--border)}.file-icon{font-size:1.8rem}.file-info strong{display:block;font-size:.95rem}.file-info small{color:var(--text-muted);font-size:.8rem}.hash-display{background:var(--bg-card2);border:1px solid var(--border);border-radius:8px;padding:12px 16px}.hash-display label{display:block;font-size:.78rem;color:var(--text-muted);margin-bottom:4px;text-transform:uppercase;letter-spacing:.05em}.hash-display code{font-family:monospace;font-size:.8rem;word-break:break-all;color:var(--algo-green)}.description-field{display:flex;flex-direction:column;gap:6px}.description-field>label{font-size:.78rem;color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em}.description-input-wrap{position:relative;display:flex;align-items:center}.description-input-wrap input{width:100%;background:var(--bg-card2);border:1px solid var(--border);border-radius:8px;padding:10px 52px 10px 14px;color:var(--text);font-size:.9rem;outline:none;transition:border-color .2s}.description-input-wrap input:focus{border-color:var(--primary)}.description-input-wrap input.invalid{border-color:#f85149}.desc-counter{position:absolute;right:12px;font-size:.72rem;color:var(--text-muted);pointer-events:none}.desc-hint{color:var(--text-muted);font-size:.75rem}.result{background:#3fb9500d;border:1px solid rgba(63,185,80,.3);border-radius:var(--radius);padding:20px}.result-success{display:flex;align-items:center;gap:12px;margin-bottom:16px}.result-icon{font-size:1.8rem}.result-success h3{font-size:1.1rem;color:var(--success)}.result-fail{display:flex;align-items:center;gap:12px}.result-fail h3{color:var(--error)}.result-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:16px}@media(max-width:500px){.result-grid{grid-template-columns:1fr}}.result-item label{display:block;font-size:.75rem;color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em;margin-bottom:3px}.result-item code{font-family:monospace;font-size:.82rem;word-break:break-all;color:var(--text)}.result-item a{color:var(--primary)}.result-item a:hover{color:var(--primary-hover)}.result-actions{display:flex;gap:12px;flex-wrap:wrap}.error-box{display:flex;align-items:flex-start;gap:10px;padding:14px 16px;background:#f8514914;border:1px solid rgba(248,81,73,.3);border-radius:var(--radius);font-size:.9rem;color:var(--error);margin-top:12px}.error-icon{font-size:1.1rem;flex-shrink:0}.verify-options{display:flex;gap:0;border:1px solid var(--border);border-radius:8px;overflow:hidden;margin-bottom:16px;width:fit-content}.verify-tab{padding:8px 20px;font-size:.88rem;cursor:pointer;color:var(--text-muted);transition:all .15s;border-right:1px solid var(--border)}.verify-tab:last-child{border-right:none}.verify-tab.active{background:var(--primary);color:#0d1117;font-weight:600}.verify-tab:hover:not(.active){background:var(--bg-card2);color:var(--text)}.verify-panel{margin-bottom:16px}.input-group{display:flex;gap:8px}.input-group input{flex:1;background:var(--bg-card2);border:1px solid var(--border);border-radius:8px;padding:10px 14px;color:var(--text);font-family:monospace;font-size:.85rem}.input-group input:focus{outline:none;border-color:var(--primary)}.verify-result{margin-top:16px}.link{color:var(--primary);cursor:pointer;text-decoration:underline}.card-wallet{border-color:#00b4d84d}.wallet-display{display:flex;flex-direction:column;gap:12px}.wallet-actions{display:flex;gap:12px;flex-wrap:wrap}.wallet-note{margin-top:14px;padding:12px;background:#d299220f;border:1px solid rgba(210,153,34,.2);border-radius:8px;font-size:.85rem;color:var(--text-muted);display:flex;flex-direction:column;gap:4px}.card-agents{border-color:#58a6ff33}.agent-example{margin:16px 0;background:var(--bg-card2);border:1px solid var(--border);border-radius:8px;overflow:hidden}.agent-label{padding:8px 14px;font-size:.8rem;color:var(--text-muted);border-bottom:1px solid var(--border);background:var(--bg)}.agent-label code{color:var(--primary);font-family:monospace}.agent-example pre{padding:16px;overflow-x:auto}.agent-example code{font-family:Courier New,monospace;font-size:.82rem;color:var(--text);line-height:1.6}.card-how{background:var(--bg);border-style:dashed}.steps{display:flex;flex-direction:column;gap:16px}.step{display:flex;gap:16px;align-items:flex-start}.step-num{flex-shrink:0;width:32px;height:32px;background:var(--primary);color:#0d1117;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.9rem}.step-text{font-size:.9rem;color:var(--text-muted);padding-top:5px}.step-text strong{color:var(--text)}.example-cert{background:var(--bg-card2);border:1px solid var(--border);border-radius:var(--radius);padding:20px;margin-bottom:8px}.example-grid{grid-template-columns:1fr 1fr}.example-full{grid-column:1 / -1}@media(max-width:500px){.example-grid{grid-template-columns:1fr}.example-full{grid-column:1}}.example-annots{display:flex;flex-direction:column;gap:20px;margin-bottom:8px}.example-annot{display:flex;gap:16px;align-items:flex-start;padding:16px;background:var(--bg-card2);border:1px solid var(--border);border-radius:var(--radius)}.example-annot-icon{flex-shrink:0;width:36px;height:36px;border-radius:8px;background:#58a6ff14;border:1px solid rgba(88,166,255,.18);display:flex;align-items:center;justify-content:center;color:var(--primary)}.example-annot-icon svg{width:18px;height:18px}.example-annot h4{font-size:.9rem;font-weight:600;margin-bottom:6px;color:var(--text)}.example-annot p{font-size:.875rem;color:var(--text-muted);line-height:1.6;margin:0}.example-verify-cta{margin-top:8px;padding:20px;background:#58a6ff0a;border:1px solid rgba(88,166,255,.15);border-radius:var(--radius)}.example-verify-cta .section-sub{margin-top:0}.history-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:40px 16px;text-align:center;color:var(--text-muted);font-size:.92rem}.history-empty-sub{display:block;margin-top:6px;font-size:.8rem;color:var(--text-muted);opacity:.7}.history-list{display:flex;flex-direction:column;gap:12px;margin-top:8px}.history-item{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;padding:16px;background:var(--bg-card2);border:1px solid var(--border);border-radius:var(--radius);transition:border-color .15s}.history-item:hover{border-color:#58a6ff59}.history-item-main{display:flex;flex-direction:column;gap:4px;min-width:0}.history-item-name{font-size:.95rem;font-weight:600;color:var(--text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:380px}.history-item-desc{font-size:.82rem;color:var(--text-muted);font-style:italic}.history-item-date{font-size:.8rem;color:var(--text-muted)}.history-item-hash{font-family:monospace;font-size:.75rem;color:var(--algo-green);opacity:.8}.history-item-actions{display:flex;flex-direction:column;gap:8px;flex-shrink:0}.history-item-actions .btn-secondary{padding:7px 14px;font-size:.82rem;white-space:nowrap}.history-header-note{font-size:.78rem;color:var(--text-muted);margin-bottom:12px;padding:8px 12px;background:#d299220f;border:1px solid rgba(210,153,34,.2);border-radius:8px}@media(max-width:600px){.history-item{flex-direction:column;gap:12px}.history-item-name{max-width:100%}.history-item-actions{flex-direction:row;flex-wrap:wrap;width:100%}.history-item-actions .btn-secondary{flex:1;justify-content:center}}.card-terms{max-width:760px;margin:0 auto}.terms-header{display:flex;align-items:center;gap:16px;margin-bottom:24px;padding-bottom:20px;border-bottom:1px solid var(--border)}.terms-icon-wrap{width:48px;height:48px;border-radius:12px;background:#58a6ff14;border:1px solid rgba(88,166,255,.18);display:flex;align-items:center;justify-content:center;flex-shrink:0}.terms-icon-wrap svg{width:26px;height:26px;color:var(--primary)}.terms-section-head{display:flex;align-items:center;gap:10px;margin-bottom:10px}.terms-section-head h3{margin-bottom:0}.tsv{width:16px;height:16px;flex-shrink:0;color:var(--primary);opacity:.9}.terms-header h2{font-size:1.4rem;font-weight:700;margin-bottom:2px}.terms-meta{color:var(--text-muted);font-size:.82rem}.terms-intro{background:var(--bg-card2);border:1px solid var(--border);border-radius:8px;padding:14px 18px;margin-bottom:28px;font-size:.93rem;color:var(--text-muted);line-height:1.65}.terms-intro strong{color:var(--text)}.terms-body{display:flex;flex-direction:column;gap:0}.terms-section{padding:18px 0;border-bottom:1px solid var(--border)}.terms-section--last{border-bottom:none;padding-bottom:0}.terms-section h3{font-size:.95rem;font-weight:600;margin-bottom:10px;color:var(--text)}.terms-section p{font-size:.88rem;color:var(--text-muted);line-height:1.7;margin-bottom:8px}.terms-section p:last-child{margin-bottom:0}.terms-section ul{list-style:none;padding:0;margin:8px 0;display:flex;flex-direction:column;gap:6px}.terms-section ul li{font-size:.88rem;color:var(--text-muted);padding-left:16px;position:relative;line-height:1.55}.terms-section ul li:before{content:"–";position:absolute;left:0;color:var(--primary)}.terms-section strong{color:var(--text)}.terms-section a{color:var(--primary);text-decoration:none}.terms-section a:hover{text-decoration:underline}footer{text-align:center;padding:24px;color:var(--text-muted);font-size:.82rem;border-top:1px solid var(--border);display:flex;flex-direction:column;gap:4px}footer a{color:var(--primary)}.footer-version{font-size:.72rem;opacity:.45;letter-spacing:.04em}.loading{display:inline-block;width:14px;height:14px;border:2px solid rgba(255,255,255,.3);border-top-color:#fff;border-radius:50%;animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.tab-nav{display:flex;gap:4px;padding:0 24px;border-bottom:1px solid var(--border);background:var(--bg-card);position:sticky;top:0;z-index:10}.tab-btn{background:none;border:none;border-bottom:3px solid transparent;color:var(--text-muted);font-size:.9rem;font-weight:500;padding:14px 20px;cursor:pointer;transition:color .15s,border-color .15s;white-space:nowrap}.tab-btn:hover{color:var(--text)}.tab-btn.active{color:var(--primary);border-bottom-color:var(--primary)}.section-sub{font-size:1rem;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:.06em;margin:32px 0 14px}.tech-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:8px}@media(max-width:640px){.tech-cards{grid-template-columns:1fr}}.tech-card{background:var(--bg-card2);border:1px solid var(--border);border-radius:var(--radius);padding:20px}.tech-icon{margin-bottom:10px;color:var(--primary)}.tech-icon svg{width:32px;height:32px}.tech-card h4{font-size:.95rem;font-weight:600;margin-bottom:8px;color:var(--primary)}.tech-card p{font-size:.875rem;color:var(--text-muted);line-height:1.6}.how-cols{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:8px}@media(max-width:640px){.how-cols{grid-template-columns:1fr}}.how-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:8px}.how-list li{font-size:.9rem;color:var(--text-muted);padding-left:1.2em;position:relative}.how-list li:before{content:"→";position:absolute;left:0;color:var(--primary);font-size:.8rem;top:.1em}.how-text{font-size:.9rem;color:var(--text-muted);line-height:1.7}.how-text code{background:var(--bg-card2);border:1px solid var(--border);border-radius:4px;padding:2px 6px;font-size:.82rem;color:var(--algo-green)}.hidden{display:none!important}@media(max-width:768px){header{padding:16px 20px 14px}.header-title h1{font-size:1.5rem}.header-sub{font-size:.88rem}main{padding:20px 12px;gap:16px}.card{padding:20px 16px}.tech-cards{grid-template-columns:repeat(2,1fr)}.drop-zone{padding:24px 16px}.wallet-actions{flex-direction:column}.wallet-actions .btn-secondary,.wallet-actions a.btn-secondary{width:100%;justify-content:center}.result-actions{flex-direction:column}.result-actions .btn-primary,.result-actions .btn-secondary,.result-actions a.btn-primary,.result-actions a.btn-secondary{width:100%;justify-content:center}footer{padding:16px 12px;font-size:.78rem}}@media(max-width:500px){header{padding:48px 16px 12px}.lang-toggle{top:12px;right:12px}.logo{height:32px}.header-title h1{font-size:1.3rem}.header-title{gap:8px}.tab-nav{padding:0 4px;flex-wrap:wrap;gap:0}.tab-btn{flex:1 1 auto;padding:10px 8px;font-size:.8rem;text-align:center;white-space:normal;line-height:1.2}main{padding:14px 10px;gap:12px}.card{padding:16px 12px;border-radius:10px}.drop-zone{padding:20px 12px}.tech-cards{grid-template-columns:1fr}.verify-options{width:100%}.verify-tab{flex:1;text-align:center;padding:8px 10px;font-size:.82rem}.input-group{flex-direction:column}.input-group .btn-primary{width:100%;justify-content:center}.wallet-address{word-break:break-all;font-size:.78rem}.wallet-connected{flex-direction:column;align-items:flex-start;gap:6px}.wallet-header{flex-direction:column;align-items:flex-start;gap:8px}.wallet-list{flex-direction:column}.wallet-btn{width:100%}.result-grid{grid-template-columns:1fr}.example-grid,.example-full{grid-template-columns:1fr;grid-column:1}.how-cols{grid-template-columns:1fr}.btn-primary,.btn-secondary{width:100%;justify-content:center}.wallet-list .wallet-btn,.btn-disconnect{width:auto}.btn-disconnect{align-self:flex-start}.agent-example pre{overflow-x:auto;-webkit-overflow-scrolling:touch}.example-cert{padding:14px 10px}.example-annot{flex-direction:column;gap:10px}.example-verify-cta{padding:14px 12px}.hash-display code{font-size:.75rem}.error-box{flex-direction:column;gap:6px}.section-sub{font-size:.88rem;margin:20px 0 10px}.terms-header{flex-direction:column;align-items:flex-start;gap:10px}}.update-banner{position:fixed;top:0;left:0;right:0;z-index:9999;background:linear-gradient(90deg,#1a73e8,#0d47a1);color:#fff;padding:14px 20px;display:flex;align-items:center;justify-content:center;gap:16px;font-size:.95rem;font-weight:500;box-shadow:0 2px 12px #00000040;animation:slideDown .4s ease;flex-wrap:wrap}.update-banner.hidden{display:none}.update-banner-btn{background:#fff;color:#1a73e8;border:none;border-radius:6px;padding:6px 14px;font-size:.88rem;font-weight:700;cursor:pointer;flex-shrink:0}.update-banner-btn:hover{background:#e8f0fe}.update-banner-close{background:#fff3;border:none;color:#fff;border-radius:50%;width:24px;height:24px;cursor:pointer;font-size:.8rem;line-height:1;flex-shrink:0;display:flex;align-items:center;justify-content:center}.update-banner-close:hover{background:#ffffff59}@keyframes slideDown{0%{transform:translateY(-100%);opacity:0}to{transform:translateY(0);opacity:1}}