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.challenge-title{margin-bottom:8px}.demo-tag{font-family:var(--font-mono);text-transform:uppercase;letter-spacing:.5px;color:var(--paper-orange);border:1px solid var(--paper-orange);border-radius:2px;padding:2px 6px;font-size:11px}.demo-card-foot{font-family:var(--font-mono);text-transform:uppercase;letter-spacing:.5px;color:var(--paper-orange);margin-top:auto;padding-top:16px;font-size:12px}.demo-card.is-wip{opacity:.65}.demo-card.is-wip .demo-tag,.demo-card.is-wip .demo-card-foot{color:var(--text-dark);border-color:var(--border-light)}.demo-cta{font-family:var(--font-sans);color:var(--text-dark);font-size:15px;font-weight:300;line-height:1.6}.demo-cta a{color:var(--paper-orange);transition:border-color var(--transition-fast);border-bottom:1px solid #0000;text-decoration:none}.demo-cta a:hover{border-bottom-color:var(--paper-orange)}.contact-sheet{max-width:640px;margin-inline:auto}.contact-sheet .sheet-head{padding:var(--sheet-pad);display:flex}.contact-sheet .sheet-head>.sheet-title{border-right:0;padding:0}.contact-body{padding:32px var(--sheet-pad);text-align:center;flex-direction:column;align-items:center;gap:20px;display:flex;position:relative}.contact-subtitle{max-width:500px;color:var(--text-muted);font-size:16px;line-height:1.6}.contact-subtitle a{color:var(--color-accent);transition:border-color var(--transition-fast);border-bottom:1px solid #0000;text-decoration:none}.contact-subtitle a:hover{border-bottom-color:var(--color-accent)}.email-text{font-family:var(--font-mono);letter-spacing:1px;color:var(--color-accent);-webkit-user-select:all;user-select:all;font-size:24px;font-weight:500;text-decoration:none}.toast-message{font-family:var(--font-mono);color:var(--text-muted);opacity:0;transition:opacity var(--transition-medium);font-size:11px;position:absolute;bottom:8px;left:0;right:0}.toast-message.show{opacity:1}.contact-buttons-group{border-top:1px solid var(--border-light);grid-template-columns:1fr 1fr;display:grid}.contact-btn{height:60px;color:var(--text-main);font-family:var(--font-mono);text-transform:uppercase;letter-spacing:.5px;cursor:pointer;transition:background-color var(--transition-fast), color var(--transition-fast);background:0 0;border:none;justify-content:center;align-items:center;gap:8px;font-size:13px;font-weight:500;text-decoration:none;display:flex}.contact-btn+.contact-btn{border-left:1px solid var(--border-light)}.contact-btn:hover{background:var(--bg-surface);color:var(--color-accent)}.contact-btn i{font-size:18px}@media (width<640px){.contact-subtitle{font-size:20px;line-height:1.4}.email-text{font-size:29px}}.chat-widget{top:calc(var(--gutter) + 44px);right:max(var(--gutter), calc((100% - 1200px) / 2));z-index:200;font-family:var(--font-mono);justify-content:flex-end;display:flex;position:fixed;bottom:auto}.chat-panel{width:min(370px,100vw - 32px);height:min(540px, calc(100dvh - var(--gutter) - 84px));background:var(--bg-panel);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid var(--border-light);animation:chat-rise var(--transition-medium);flex-direction:column;display:flex;box-shadow:0 18px 50px #1010118c}@keyframes chat-rise{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}.chat-header{border-bottom:1px solid var(--border-light);flex-shrink:0;align-items:center;gap:10px;padding:16px 16px 14px;display:flex}.chat-logo{width:auto;height:20px}.chat-header-tag{color:var(--color-primary);letter-spacing:.04em;font-size:13px}.chat-messages{flex-direction:column;flex:1;gap:12px;padding:16px;display:flex;overflow-y:auto}.chat-msg{white-space:pre-wrap;word-break:break-word;max-width:85%;padding:10px 12px;font-size:13px;line-height:1.55}.chat-msg-assistant{border:1px solid var(--border-light);color:var(--text-main);background:#ffffff0f;align-self:flex-start}.chat-msg-user{background:var(--color-primary-light);border:1px solid var(--color-primary);color:var(--text-main);align-self:flex-end}.chat-error{color:var(--color-warn);text-align:center;align-self:center;font-size:13px}.chat-typing{align-items:center;gap:5px;display:inline-flex}.chat-typing span{background:var(--text-muted);border-radius:50%;width:6px;height:6px;animation:1.2s ease-in-out infinite chat-blink}.chat-typing span:nth-child(2){animation-delay:.2s}.chat-typing span:nth-child(3){animation-delay:.4s}@keyframes chat-blink{0%,80%,to{opacity:.25}40%{opacity:1}}.chat-input-row{border-top:1px solid var(--border-light);flex-shrink:0;align-items:flex-end;gap:8px;padding:12px;display:flex}.chat-input{resize:none;border:1px solid var(--border-light);max-height:96px;color:var(--text-main);font-family:var(--font-mono);transition:border-color var(--transition-fast);background:#10101159;outline:none;flex:1;padding:9px 11px;font-size:13px;line-height:1.5}.chat-input:focus{border-color:var(--border-focus)}.chat-input::placeholder{color:var(--text-muted)}.chat-send{width:38px;height:38px;color:var(--color-primary);cursor:pointer;transition:color var(--transition-fast), background-color var(--transition-fast), opacity var(--transition-fast);background:0 0;border:none;flex-shrink:0;justify-content:center;align-items:center;font-size:20px;display:inline-flex}.chat-send:hover:not(:disabled){color:var(--text-main);background:var(--color-primary-light)}.chat-send:disabled{opacity:.4;cursor:default}@media (width<640px){.chat-panel{height:min(70dvh,100dvh - 100px)}}.chat-msg-assistant a{color:var(--color-primary);text-underline-offset:2px;word-break:break-word;text-decoration:underline}.chat-msg-assistant a:hover{color:var(--color-primary-hover)}.chat-msg-assistant strong{font-weight:600}.chat-attach{width:38px;height:38px;color:var(--color-primary);cursor:pointer;transition:color var(--transition-fast), background-color var(--transition-fast), opacity var(--transition-fast);background:0 0;border:none;flex-shrink:0;justify-content:center;align-items:center;font-size:20px;display:inline-flex}.chat-attach:hover:not(:disabled){color:var(--text-main);background:var(--color-primary-light)}.chat-attach:disabled{opacity:.4;cursor:default}.chat-attachments{flex-wrap:wrap;flex-shrink:0;gap:8px;padding:10px 12px 0;display:flex}.chat-thumb{width:52px;height:52px;position:relative}.chat-thumb img{object-fit:cover;border:1px solid var(--border-light);width:100%;height:100%;display:block}.chat-thumb-remove{background:var(--bg-panel);width:18px;height:18px;color:var(--text-main);border:1px solid var(--border-light);cursor:pointer;border-radius:50%;justify-content:center;align-items:center;padding:0;font-size:10px;line-height:1;display:inline-flex;position:absolute;top:-6px;right:-6px}.chat-thumb-remove:hover{color:var(--color-warn);border-color:var(--color-warn)}.chat-msg-images{flex-wrap:wrap;gap:6px;margin-bottom:6px;display:flex}.chat-msg-images img{border:1px solid var(--border-light);max-width:120px;max-height:120px;display:block}body.doc{display:block}.doc-panel{background:var(--paper);max-width:820px;-webkit-backdrop-filter:blur(var(--glass-blur));backdrop-filter:blur(var(--glass-blur));color:var(--text-dark);margin:56px auto 72px;padding:48px}.doc-back{font-family:var(--font-mono);letter-spacing:1px;text-transform:uppercase;color:var(--paper-teal);transition:color var(--transition-fast);align-items:center;gap:8px;margin-bottom:32px;font-size:11px;text-decoration:none;display:inline-flex}.doc-back:hover{color:var(--text-dark)}.doc-panel h1{font-family:var(--font-sans);letter-spacing:-1px;color:var(--text-dark);border-bottom:1px solid var(--paper-line);margin-bottom:8px;padding-bottom:20px;font-size:36px;font-weight:300;line-height:1.15}.doc-panel h2{font-family:var(--font-sans);color:var(--text-dark);margin-top:36px;margin-bottom:10px;font-size:18px;font-weight:500}.doc-panel p,.doc-panel li{font-family:var(--font-sans);color:var(--paper-text-muted);font-size:15px;font-weight:400;line-height:1.7}.doc-panel p{margin-bottom:14px}.doc-panel ul{margin-bottom:14px;padding-left:20px}.doc-panel li{margin-bottom:6px}.doc-panel a:not(.doc-back){color:var(--paper-teal);text-underline-offset:2px}@media (width<=768px){.doc-panel{margin:24px auto 40px;padding:24px}.doc-panel h1{font-size:28px}}