:root{--ink:#172b43;--muted:#627184;--paper:#f4f6f8;--line:#dce3eb;--blue:#195c97;--gold:#bc9362}*{box-sizing:border-box}body{margin:0;background:var(--paper);font-family:-apple-system,BlinkMacSystemFont,'PingFang SC','Microsoft YaHei',sans-serif;color:var(--ink);line-height:1.65}header{background:#102b46;color:white;padding:36px max(24px,calc((100vw - 850px)/2));border-bottom:4px solid var(--gold)}.brand{font-size:12px;letter-spacing:3px;color:#c9d7e5}h1{font-size:clamp(28px,5vw,40px);line-height:1.3;margin:16px 0 12px;font-weight:600}header p{max-width:620px;color:#d5e1ed;margin:8px 0}.meta{margin-top:24px;display:flex;gap:22px;font-size:13px;color:#b6cbdc}main{max-width:850px;margin:28px auto;padding:0 24px 50px}.intro{font-size:14px;color:var(--muted);margin-bottom:24px}h2{font-size:21px;margin:30px 0 12px}.progress{position:sticky;top:0;background:var(--paper);padding:10px 0;z-index:1;display:flex;align-items:center;gap:15px;font-size:13px}.track{height:5px;flex:1;background:#dce3eb;border-radius:3px;overflow:hidden}.bar{height:100%;background:var(--blue);transition:width .2s}.question{padding:24px 28px;margin:14px 0;background:white;border:1px solid var(--line);border-radius:12px}legend,.label{font-size:17px;font-weight:600;margin-bottom:12px;display:block}fieldset{border:0;padding:0;margin:0;min-width:0}.num{font-size:12px;color:var(--gold);font-weight:700;letter-spacing:1px;display:block;margin-bottom:5px}.required{color:#8b4c29;font-size:12px;margin-left:8px}.option{display:flex;gap:12px;align-items:flex-start;padding:12px 14px;border:1px solid var(--line);border-radius:7px;margin:8px 0;cursor:pointer;min-height:48px;font-size:15px}.option:has(input:checked){border-color:var(--blue);background:#edf4fa}.option input{width:18px;height:18px;accent-color:var(--blue);margin-top:4px;flex-shrink:0}input[type=text],input[type=password],textarea{width:100%;font:inherit;font-size:15px;border:1px solid #bccada;border-radius:7px;padding:13px;background:#fcfdfe;color:var(--ink)}textarea{min-height:110px;resize:vertical}input:focus,textarea:focus,button:focus-visible,a:focus-visible{outline:3px solid #87b5d7;outline-offset:3px}.hint,.count{font-size:12px;color:var(--muted)}.count{text-align:right}.consent{display:flex;gap:12px;font-size:14px;margin:24px 4px}.consent input{width:20px;height:20px;flex-shrink:0;margin-top:4px}.actions{display:flex;gap:12px;align-items:center;flex-wrap:wrap}button,.button{border:0;background:var(--blue);color:white;padding:15px 25px;border-radius:8px;font:inherit;font-weight:600;cursor:pointer;display:inline-block;text-decoration:none}button:disabled{opacity:.55;cursor:wait}.secondary{background:#e6edf4;color:var(--ink)}.error{color:#a33925;margin:14px 0}.success{background:white;border:1px solid var(--line);padding:40px 30px;border-radius:12px;margin-top:24px}.receipt{font-family:monospace;letter-spacing:1px;background:#eef3f7;padding:12px;word-break:break-all}footer{border-top:1px solid var(--line);padding-top:24px;color:var(--muted);font-size:12px;margin-top:30px}a{color:var(--blue)}[hidden]{display:none!important}.summary{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.metric{background:white;border:1px solid var(--line);border-radius:10px;padding:20px}.metric strong{font-size:32px;display:block}.response{background:white;border:1px solid var(--line);border-radius:8px;padding:18px;margin:12px 0;overflow-wrap:anywhere}.response dl{margin:0}.response dt{font-weight:600;font-size:13px;color:var(--muted);margin-top:12px}.response dd{margin:0}.topic{display:flex;justify-content:space-between;padding:10px 0;border-bottom:1px solid var(--line)}@media(max-width:600px){header{padding:28px 22px}main{padding:0 16px 35px}.question{padding:22px 18px}.meta{gap:16px;flex-wrap:wrap}.summary{grid-template-columns:1fr}h1{font-size:30px}}