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.15s}#ops-chat-textarea::placeholder{color:#9aaabf}#ops-chat-textarea:focus{border-color:var(--color-accent)}#ops-chat-send{width:36px;height:36px;border-radius:8px;background:var(--color-accent);border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;flex-shrink:0;transition:background .15s}#ops-chat-send:hover{background:var(--color-accent-hover)}#ops-chat-send svg{width:15px;height:15px;fill:#fff}#ops-chat-send:disabled{background:#c5d4f0;cursor:not-allowed}@media(max-width:1024px){.problem-split{grid-template-columns:1fr;gap:32px}.problem-head{position:static}.build-row{grid-template-columns:1fr;gap:16px}.build-row-left{padding-right:0}.stats-grid-dark{grid-template-columns:1fr}.timeline-step{grid-template-columns:72px 1fr}}@media(max-width:768px){:root{--section-padding: 72px}.site-nav{padding:0 24px}.nav-links{display:none}.nav-hamburger{display:flex}.hero-inner{padding:40px 24px 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32px)}}@media(max-width:480px){.stats-grid-dark{grid-template-columns:1fr}}