:root{--blue:#1677ff;--blue2:#0958d9;--ink:#152033;--muted:#667085;--line:#e6ebf2;--bg:#f5f8fc;--green:#138a54;--orange:#b54708;--white:#fff}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;line-height:1.65;-webkit-font-smoothing:antialiased}a{color:inherit}.wrap{width:min(760px,calc(100% - 28px));margin:auto}.topbar{background:#eaf3ff;color:#174ea6;font-size:13px;text-align:center;padding:8px 12px;border-bottom:1px solid #d8e8ff}.header{background:#fff;border-bottom:1px solid var(--line)}.header-in{height:62px;display:flex;align-items:center;justify-content:space-between}.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-weight:800}.logo{width:38px;height:38px;border-radius:10px;background:var(--blue);color:#fff;display:grid;place-items:center;font-size:24px}.sub{display:block;color:var(--muted);font-size:12px;font-weight:500;line-height:1.3}.service-link{font-size:14px;color:var(--blue);text-decoration:none;font-weight:700}.hero{padding:28px 0 18px}.eyebrow{display:inline-flex;gap:6px;align-items:center;padding:5px 10px;border-radius:999px;background:#eaf3ff;color:#174ea6;font-size:13px;font-weight:700}.hero h1{font-size:clamp(28px,7vw,44px);line-height:1.2;margin:15px 0 12px;letter-spacing:-.5px}.hero p{margin:0;color:var(--muted);font-size:16px}.trust-row{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:18px}.trust{background:#fff;border:1px solid var(--line);border-radius:12px;padding:11px 8px;text-align:center;font-size:12px;color:var(--muted)}.trust strong{display:block;color:var(--ink);font-size:14px}.chat-card{background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:0 8px 30px rgba(16,51,91,.08);overflow:hidden;margin:10px 0 18px}.chat-head{display:flex;align-items:center;gap:10px;padding:14px 16px;border-bottom:1px solid var(--line);background:#fbfdff}.avatar{width:38px;height:38px;border-radius:50%;background:var(--blue);color:#fff;display:grid;place-items:center;font-weight:800}.chat-title{font-weight:800}.status{font-size:12px;color:var(--green)}.chat-body{min-height:260px;padding:16px;background:#f7f9fc}.message{display:flex;margin:0 0 12px}.message.user{justify-content:flex-end}.bubble{max-width:88%;padding:11px 13px;border-radius:14px;background:#fff;border:1px solid var(--line);font-size:15px;white-space:pre-line}.message.user .bubble{background:var(--blue);border-color:var(--blue);color:#fff;border-bottom-right-radius:4px}.message.bot .bubble{border-bottom-left-radius:4px}.quick{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin:8px 0 12px}.quick button,.send-btn,.primary,.secondary{font:inherit;border:0;cursor:pointer}.quick button{background:#fff;border:1px solid #cddcf1;border-radius:10px;padding:10px 8px;color:#174ea6;font-weight:700}.quick button:active{transform:scale(.98)}.input-row{display:flex;gap:8px;margin-top:8px}.input-row input{min-width:0;flex:1;border:1px solid #cfd8e6;border-radius:10px;padding:11px 12px;font:inherit}.send-btn{border-radius:10px;padding:0 16px;background:var(--blue);color:#fff;font-weight:700}.cta-panel{display:none;margin-top:12px;padding:14px;background:#eef7ff;border:1px solid #cfe4ff;border-radius:12px}.cta-panel.show{display:block}.cta-panel strong{display:block;margin-bottom:5px}.primary{display:block;width:100%;text-align:center;text-decoration:none;background:var(--blue);color:#fff;border-radius:11px;padding:12px 14px;font-weight:800;margin-top:12px}.primary:hover{background:var(--blue2)}.secondary{display:block;width:100%;text-align:center;text-decoration:none;background:#fff;color:var(--blue);border:1px solid #b8d5ff;border-radius:11px;padding:11px 14px;font-weight:700;margin-top:8px}.fine{font-size:12px;color:var(--muted);margin:8px 0 0}.section{background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px;margin:14px 0}.section h2{font-size:20px;margin:0 0 10px}.section p{margin:7px 0;color:#475467}.steps{display:grid;gap:10px}.step{display:flex;gap:10px}.num{flex:0 0 28px;height:28px;border-radius:8px;background:#eaf3ff;color:#174ea6;display:grid;place-items:center;font-weight:800}.fee{border-left:4px solid var(--green);background:#f0fbf5}.fee strong{color:var(--green)}.warning{border-left:4px solid #f79009;background:#fff8eb}.footer{padding:22px 0 86px;color:#667085;font-size:12px;text-align:center}.footer a{color:#475467}.fixed{position:fixed;z-index:10;left:0;right:0;bottom:0;background:rgba(255,255,255,.96);border-top:1px solid var(--line);padding:9px 12px;backdrop-filter:blur(8px)}.fixed-in{width:min(760px,100%);margin:auto;display:grid;grid-template-columns:1fr 1.4fr;gap:8px}.fixed a{text-decoration:none;text-align:center;border-radius:10px;padding:10px;font-weight:800}.fixed .ask{background:#eef5ff;color:var(--blue)}.fixed .resume{background:var(--blue);color:#fff}@media(max-width:520px){.hero{padding-top:21px}.trust-row{grid-template-columns:1fr 1fr}.trust-row .trust:last-child{grid-column:1/-1}.chat-body{padding:13px}.quick{grid-template-columns:1fr 1fr}.bubble{max-width:94%}.header-in{height:56px}.service-link{font-size:13px}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}