*{box-sizing:border-box;margin:0;padding:0}:root{--white:#fff;--off-white:#f8f9fa;--light-gray:#e9ecef;--mid-gray:#6c757d;--dark:#212529;--primary:#1a3c5e;--primary-light:#2e5490;--accent:#e8a020;--success:#28a745;--warning:#ffc107;--danger:#dc3545;--shadow:0 2px 12px #00000014;--shadow-hover:0 8px 24px #00000026;--radius:12px;--transition:all .2s ease}body{background-color:var(--off-white);color:var(--dark);min-height:100vh;font-family:Segoe UI,system-ui,-apple-system,sans-serif;line-height:1.6}button{cursor:pointer;border:none;outline:none;font-family:inherit}.homepage{background-color:var(--off-white);flex-direction:column;justify-content:center;align-items:center;min-height:100vh;padding:40px 20px;display:flex}.homepage-header{text-align:center;margin-bottom:60px}.homepage-header h1{color:var(--primary);letter-spacing:-1px;margin-bottom:8px;font-size:3.5rem;font-weight:800}.homepage-header p{color:var(--mid-gray);font-size:1.1rem;font-weight:400}.domain-cards-container{flex-wrap:wrap;justify-content:center;gap:32px;margin-bottom:48px;display:flex}.domain-card{background:var(--white);border-radius:var(--radius);cursor:pointer;width:320px;box-shadow:var(--shadow);transition:var(--transition);border:2px solid #0000;padding:48px 40px;position:relative;overflow:hidden}.domain-card:before{content:"";background:var(--primary-light);height:4px;position:absolute;top:0;left:0;right:0}.domain-card.drilling:before{background:var(--primary)}.domain-card.refinery:before{background:var(--accent)}.domain-card:hover{box-shadow:var(--shadow-hover);border-color:var(--primary-light);transform:translateY(-4px)}.domain-card h2{color:var(--primary);margin-bottom:12px;font-size:1.5rem;font-weight:700}.domain-card p{color:var(--mid-gray);margin-bottom:24px;font-size:.95rem;line-height:1.6}.card-arrow{color:var(--primary-light);font-size:1.5rem;font-weight:700}.chatbot-direct-btn{color:var(--mid-gray);border:1px solid var(--light-gray);transition:var(--transition);background:0 0;border-radius:20px;padding:8px 16px;font-size:.9rem}.chatbot-direct-btn:hover{background:var(--light-gray);color:var(--dark)}@media (width<=768px){.homepage-header h1{font-size:2.5rem}.domain-cards-container{flex-direction:column;align-items:center}.domain-card{width:100%;max-width:360px}}.keyword-input-row{gap:12px;width:100%;max-width:600px;margin:0 auto;display:flex}.keyword-input{border:2px solid var(--light-gray);color:var(--dark);background:var(--off-white);transition:var(--transition);box-shadow:var(--shadow);border-radius:10px;flex:1;padding:16px 22px;font-family:inherit;font-size:1rem}.keyword-input:focus{border-color:var(--primary-light);background:var(--white);box-shadow:var(--shadow-hover);outline:none}.keyword-input::placeholder{color:#adb5bd;font-size:.95rem}.keyword-submit-btn{background:var(--primary);color:var(--white);transition:var(--transition);box-shadow:var(--shadow);white-space:nowrap;border-radius:10px;padding:16px 28px;font-size:1rem;font-weight:600}.keyword-submit-btn:hover{background:var(--primary-light);box-shadow:var(--shadow-hover)}.keyword-submit-btn:disabled{opacity:.6;cursor:not-allowed}.workflow-header{background:var(--white);box-shadow:var(--shadow);z-index:10;justify-content:space-between;align-items:center;width:100%;padding:16px 40px;display:flex;position:sticky;top:0}.workflow-header h2{color:var(--primary);text-align:center;flex:1;font-size:1.2rem;font-weight:700}.back-btn{color:var(--primary);border:1px solid var(--light-gray);transition:var(--transition);white-space:nowrap;background:0 0;border-radius:8px;padding:8px 16px;font-size:.95rem;font-weight:600}.back-btn:hover{background:var(--light-gray)}.chatbot-btn{background:var(--off-white);color:var(--mid-gray);border:1px solid var(--light-gray);transition:var(--transition);white-space:nowrap;border-radius:8px;padding:8px 16px;font-size:.85rem}.chatbot-btn:hover{background:var(--light-gray);color:var(--dark)}.workflow-body{flex-direction:column;align-items:center;gap:24px;width:100%;max-width:800px;min-height:calc(100vh - 60px);margin:0 auto;padding:60px 20px;display:flex}.guided-workflow{background-color:var(--off-white);flex-direction:column;width:100%;min-height:100vh;display:flex}.chatbot{background-color:var(--off-white);flex-direction:column;min-height:100vh;display:flex}.chatbot-header{background:var(--white);box-shadow:var(--shadow);z-index:10;align-items:center;gap:20px;padding:20px 40px;display:flex;position:sticky;top:0}.chatbot-header h2{color:var(--primary);font-size:1.3rem;font-weight:700}.chatbot-messages{flex-direction:column;flex:1;gap:16px;width:100%;max-width:800px;margin:0 auto;padding:32px 20px;display:flex}.message{border-radius:12px;max-width:75%;padding:14px 18px;font-size:.95rem;line-height:1.6}.message.user{background:var(--primary);color:var(--white);border-bottom-right-radius:4px;align-self:flex-end}.message.assistant{background:var(--white);color:var(--dark);box-shadow:var(--shadow);border-bottom-left-radius:4px;align-self:flex-start}.chatbot-input{background:var(--white);gap:12px;width:100%;max-width:800px;margin:0 auto;padding:20px 40px;display:flex;box-shadow:0 -2px 12px #0000000f}.chatbot-input input{border:1px solid var(--light-gray);background:var(--off-white);color:var(--dark);transition:var(--transition);border-radius:8px;flex:1;padding:14px 18px;font-family:inherit;font-size:.95rem}.chatbot-input input:focus{border-color:var(--primary-light);background:var(--white);outline:none}.chatbot-input button{background:var(--primary);color:var(--white);transition:var(--transition);border-radius:8px;padding:14px 28px;font-size:.95rem;font-weight:600}.chatbot-input button:hover{background:var(--primary-light)}@media (width<=768px){.chatbot-header,.chatbot-input{padding:16px 20px}.message{max-width:90%}}