:root{--navy:#0c243b;--blue:#0a6ebd;--blue-dark:#07548f;--sky:#eef7fc;--line:#d8e4eb;--text:#172b3d;--muted:#627486;--orange:#ffad24}*{box-sizing:border-box}body{margin:0;background:#f4f8fa;color:var(--text);font-family:"IBM Plex Sans Thai",Arial,sans-serif;font-size:16px;line-height:1.5}.selector-shell{min-height:100vh}.hero{background:linear-gradient(125deg,#071d30 0%,#0b4167 100%);color:#fff;padding:46px max(24px,calc((100% - 1100px)/2)) 64px}.brand{display:inline-flex;align-items:baseline;gap:9px;color:#fff;font-family:Arial,sans-serif;font-size:30px;font-weight:800;letter-spacing:-1.5px;text-decoration:none}.brand span{font-size:10px;font-weight:600;letter-spacing:1.2px}.eyebrow{color:#66c5ff;font-size:12px;font-weight:700;letter-spacing:1.5px;margin:44px 0 8px}.hero h1{font-size:clamp(34px,5vw,56px);letter-spacing:-1.7px;line-height:1.1;margin:0}.intro{color:#cde1ef;font-size:18px;max-width:570px;margin:18px 0 0}.tool{width:min(100% - 32px,1000px);margin:-32px auto 48px;background:#fff;border-radius:16px;box-shadow:0 18px 45px #153a5421;padding:clamp(24px,5vw,48px)}.tool-heading,.result-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:24px}.tool-heading .eyebrow,.result-heading .eyebrow{margin:0 0 6px}.tool h2{font-size:clamp(24px,3.5vw,32px);letter-spacing:-.7px;line-height:1.25;margin:0}.step{color:var(--muted);font-size:14px;margin:0;white-space:nowrap}.progress{background:#e6eef3;border-radius:20px;height:7px;margin:27px 0 38px;overflow:hidden}.progress span{background:linear-gradient(90deg,var(--blue),#45b9eb);display:block;border-radius:inherit;height:100%;transition:width .25s;width:33.33%}.form-step{border:0;margin:0;padding:0}.form-step:not(.active){display:none}legend{font-size:20px;font-weight:600;padding:0;margin-bottom:20px}.helper{color:var(--muted);margin:-12px 0 20px}.choice-grid{display:grid;gap:12px}.choice-grid--four{grid-template-columns:repeat(4,1fr)}.choice{border:1px solid var(--line);border-radius:10px;cursor:pointer;display:flex;flex-direction:column;min-height:138px;padding:17px;transition:.18s}.choice:has(input:checked){border-color:var(--blue);box-shadow:0 0 0 2px #1688d425;background:#f4fbff}.choice input{position:absolute;opacity:0}.choice-icon{color:var(--blue);font-size:25px;line-height:1;margin-bottom:11px}.choice strong{font-size:17px}.choice small{color:var(--muted);font-size:13px;line-height:1.4;margin-top:4px}.field-row{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:24px}.field-row--three{grid-template-columns:1.15fr 1fr 1.3fr}label{color:#31485b;font-size:14px;font-weight:600}input,select{background:#fff;border:1px solid #bed0dc;border-radius:7px;color:var(--text);display:block;font:inherit;font-weight:400;margin-top:7px;min-height:46px;padding:10px 12px;width:100%}input:focus,select:focus{border-color:var(--blue);box-shadow:0 0 0 3px #0a6ebd22;outline:0}.note{background:#fff7e6;border-left:4px solid var(--orange);border-radius:5px;color:#684b17;font-size:14px;margin-top:25px;padding:15px 17px}.actions{display:flex;gap:12px;justify-content:flex-end;margin-top:36px}.button{background:var(--blue);border:1px solid var(--blue);border-radius:7px;color:#fff;cursor:pointer;display:inline-flex;font:inherit;font-weight:600;justify-content:center;min-height:46px;padding:10px 20px;text-align:center;text-decoration:none;transition:.18s}.button:hover{background:var(--blue-dark);border-color:var(--blue-dark)}.button--secondary{background:#fff;border-color:#aec1cc;color:#1b4d70}.button--secondary:hover{background:#f2f8fb;border-color:#88a9ba}.results{margin-top:5px}.result-summary{background:var(--sky);border-radius:8px;margin:22px 0;padding:14px 16px}.recommendations{display:grid;gap:14px}.recommendation{border:1px solid var(--line);border-radius:11px;display:grid;grid-template-columns:1fr auto;gap:12px;padding:22px}.recommendation--top{border:2px solid var(--blue)}.recommendation p{color:var(--muted);font-size:14px;margin:6px 0 0}.recommendation h3{font-family:"Roboto Mono",monospace;font-size:20px;letter-spacing:-.5px;margin:0}.tag{align-self:start;background:#e8f7ff;border-radius:40px;color:#03659f;font-size:12px;font-weight:600;padding:4px 10px;text-align:center}.specs{color:#40566a;font-size:13px;grid-column:1/-1;margin:4px 0 0}.specs span{border-right:1px solid #d2dee5;margin-right:9px;padding-right:9px}.specs span:last-child{border:0}.result-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}.contact-tip{color:var(--muted);font-size:14px;margin:17px 0 0}.text-button{background:transparent;border:0;color:var(--blue);cursor:pointer;font:inherit;font-weight:600;padding:6px 0}.text-button:hover{text-decoration:underline}@media(max-width:680px){.hero{padding:28px 24px 56px}.brand{font-size:25px}.tool{margin-top:-26px;width:calc(100% - 24px);padding:24px 18px}.choice-grid--four{grid-template-columns:1fr 1fr}.choice{min-height:126px;padding:14px}.field-row,.field-row--three{grid-template-columns:1fr;gap:14px;margin-top:14px}.tool-heading,.result-heading{align-items:flex-start;flex-direction:column;gap:7px}.step{margin-top:2px}.actions{justify-content:space-between}.actions .button{flex:1}.recommendation{grid-template-columns:1fr}.tag{justify-self:start}.result-actions .button{width:100%}}@media(max-width:370px){.choice-grid--four{grid-template-columns:1fr}.hero h1{font-size:32px}}