:root{font-family:Tahoma,system-ui,sans-serif;color:#18324b;background:#f8f6ef;font-size:18px}*{box-sizing:border-box}body{margin:0}header{display:flex;justify-content:space-between;align-items:center;padding:20px 5vw;gap:20px;border-bottom:1px solid #e2e5e7;background:#fff}.brand{display:flex;align-items:center;gap:12px;font-weight:700;color:#112d4a;text-decoration:none}.brand small,.chat-head small{display:block;font-size:14px;font-weight:400;color:#677789;margin-top:5px}nav{display:flex;gap:20px}nav a{color:#112d4a;min-height:44px;display:flex;align-items:center}main{max-width:1150px;margin:0 auto;padding:48px 28px;display:grid;grid-template-columns:1fr 420px;gap:65px;align-items:start}.intro{padding-top:36px}h1{font-size:clamp(32px,4vw,54px);line-height:1.35;margin:12px 0 22px;letter-spacing:-1px}.eyebrow{font-size:16px;color:#816323;font-weight:700}.intro p{line-height:1.8}.notice{background:#fff3cf;padding:18px 20px;border-radius:12px;line-height:1.75;font-size:16px}.setup{display:block;text-align:center;text-decoration:none;background:#112d4a;color:#fff;border-radius:12px;padding:19px;margin-top:25px;font-weight:700}.tip{font-size:16px;color:#677789}.phone{border:8px solid #173049;border-radius:30px;background:#dce9e0;box-shadow:0 16px 45px #112d4a20;overflow:hidden;width:100%}.chat-head{background:white;display:flex;align-items:center;gap:12px;padding:18px 20px;font-weight:700}.chat-body{padding:18px 16px 24px;min-height:450px}#demo-status{font-size:14px;color:#42624c;text-align:center;line-height:1.6;margin:0 0 15px}.flex-bubble{overflow:hidden;border-radius:18px;background:#fff}.flex-box{display:flex;flex-direction:column}.flex-text{margin:0;line-height:1.65;overflow-wrap:anywhere}.flex-button{font:inherit;font-weight:700;display:block;width:100%;min-height:56px;border:0;border-radius:10px;padding:12px 14px;line-height:1.5;cursor:pointer}.flex-button.primary{color:#fff;background:#112d4a}.flex-button.secondary{color:#112d4a;background:#eef2f5}button:focus-visible,a:focus-visible{outline:4px solid #d39411;outline-offset:3px}.chat-input{font-size:14px;padding:20px 18px;background:#fff;color:#677789;display:flex;justify-content:space-between}.chat-input span{color:#138652}footer{text-align:center;font-size:14px;color:#677789;padding:20px} @media(max-width:820px){main{grid-template-columns:1fr;gap:28px;padding:24px 18px}.intro{padding-top:0}.phone{max-width:430px;margin:auto}h1{font-size:34px}header{padding:14px 18px;align-items:flex-start}.brand{font-size:15px}.brand img{width:38px;height:38px}nav{gap:8px;flex-direction:column;font-size:14px}nav a{min-height:32px}}@media(max-width:380px){main{padding:18px 10px}.chat-body{padding:12px 8px}.phone{border-width:5px}.flex-button{font-size:17px}.intro{padding:0 5px}}