:root{--bg:#edf4f0;--surface:#fff;--surface-strong:#102f2b;--ink:#193632;--muted:#6a7c78;--line:#d7e3df;--line-strong:#b9cbc5;--accent:#087c6b;--accent-dark:#055f54;--accent-soft:#e3f4ef;--gold:#d5a13d;--danger:#b42318;--success:#087443;--shadow:0 16px 44px #0e2f2b17;--font-display:"Avenir Next", "PingFang SC", "Microsoft YaHei", sans-serif;--font-body:"PingFang SC", "Microsoft YaHei", sans-serif}*{box-sizing:border-box}html{background:var(--bg);color:var(--ink);overflow-x:clip}body{min-height:100vh;font-family:var(--font-body);letter-spacing:0;margin:0;overflow-x:clip}a{color:inherit}button,input,textarea,select{font:inherit}.page-shell{background:radial-gradient(circle at 8% 0%, #d5a13d30, transparent 330px), linear-gradient(180deg, #087c6b24, transparent 360px), var(--bg);min-height:100vh}.survey-wrap{width:min(680px,100%);margin:0 auto;padding:22px 18px 64px}.survey-topbar,.admin-topbar{justify-content:space-between;align-items:center;gap:18px;margin-bottom:18px;display:flex}.brand-mark{color:#38525c;align-items:center;gap:10px;font-size:13px;font-weight:700;display:inline-flex}.brand-dot{background:var(--accent);width:9px;height:9px;box-shadow:14px 0 0 var(--gold), 28px 0 0 #2563eb;border-radius:99px}.survey-logo{width:min(176px,52vw);height:auto;display:block}.survey-duration{color:#47615b;font-family:var(--font-display);letter-spacing:.03em;font-size:12px;font-weight:700}.intro-panel,.status-panel,.admin-panel,.detail-panel,.login-panel{border:1px solid var(--line);box-shadow:var(--shadow);background:#fffffff5;border-radius:18px}.intro-panel{color:#fff;background:linear-gradient(90deg,#ffffff0e 1px,#0000 1px) 0 0/32px 32px,linear-gradient(#ffffff0e 1px,#0000 1px) 0 0/32px 32px,linear-gradient(145deg,#163d37,#082b28);border:0;margin-bottom:20px;padding:32px 30px 28px;position:relative;overflow:hidden}.intro-panel:after{content:"";border:42px solid #d5a13d29;border-radius:50%;width:180px;height:180px;position:absolute;bottom:-58px;right:-42px}.intro-kicker,.table-kicker{color:var(--gold);font-family:var(--font-display);letter-spacing:.12em;font-size:12px;font-weight:800}h1,h2,h3,p{margin-top:0}.intro-panel h1{z-index:1;color:#fff;font-family:var(--font-display);letter-spacing:-.045em;margin:14px 0 12px;font-size:clamp(32px,8vw,46px);font-weight:700;line-height:1.13;position:relative}.intro-panel p{z-index:1;color:#ffffffbd;width:min(450px,100%);margin-bottom:20px;font-size:14px;line-height:1.75;position:relative}.intro-meta{z-index:1;flex-wrap:wrap;gap:8px;display:flex;position:relative}.intro-meta span{color:#ffffffe0;background:#ffffff12;border:1px solid #ffffff2e;border-radius:999px;min-height:28px;padding:5px 10px;font-size:12px}.survey-form{gap:20px;display:grid}.question-section{gap:12px;display:grid}.section-heading{justify-content:space-between;align-items:end;padding:10px 4px 2px;display:flex}.section-heading span{color:var(--accent);font-family:var(--font-display);letter-spacing:.14em;font-size:11px;font-weight:800}.section-heading h2{color:var(--surface-strong);font-family:var(--font-display);letter-spacing:-.02em;margin:0;font-size:20px}.question-card{border:1px solid var(--line);background:#fffffff7;border-radius:16px;gap:14px;min-inline-size:0;margin:0;padding:20px;transition:border-color .16s,box-shadow .16s,transform .16s;display:grid;box-shadow:0 6px 22px #0e2f2b0b}.question-card:focus-within{border-color:#087c6b8a;box-shadow:0 10px 30px #087c6b1a}.question-card--error{border-color:#b4231873}.question-legend{width:100%;color:var(--ink);align-items:flex-start;gap:12px;padding:0;font-size:16px;font-weight:700;line-height:1.55;display:flex}.question-number{color:var(--accent);font-family:var(--font-display);letter-spacing:.04em;flex:none;font-size:13px;font-weight:800;line-height:24px}.required-mark{color:#cf4636;margin-left:3px;font-style:normal}.question-hint{color:var(--muted);margin:-8px 0 0 36px;font-size:12px}.input{border:1px solid var(--line-strong);width:100%;min-height:48px;color:var(--ink);background:#fbfdfc;border-radius:10px;outline:none;padding:13px 14px;transition:border .16s,box-shadow .16s}.input::placeholder{color:#94a3ad}.input:focus{border-color:var(--accent);box-shadow:0 0 0 4px #087c6b1c}.field-error,.form-error{color:var(--danger);font-size:13px}.choice-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:9px;display:grid}.choice{border:1px solid var(--line);cursor:pointer;background:#fbfdfc;border-radius:10px;align-items:center;gap:10px;min-height:48px;padding:10px 11px;transition:border-color .14s,background .14s,transform .14s;display:flex;position:relative}.choice:hover{border-color:var(--line-strong);transform:translateY(-1px)}.choice:focus-within{outline-offset:1px;outline:3px solid #087c6b21}.choice--checked{background:var(--accent-soft);border-color:#087c6b8c}.choice input{opacity:0;width:1px;height:1px;position:absolute}.choice-control{background:#fff;border:1.5px solid #91a7a1;border-radius:50%;flex:0 0 19px;width:19px;height:19px;position:relative}.choice input[type=checkbox]+.choice-control{border-radius:5px}.choice--checked .choice-control{border-color:var(--accent);background:var(--accent)}.choice--checked .choice-control:after{content:"";background:#fff;border-radius:50%;position:absolute;inset:5px}.choice--checked input[type=checkbox]+.choice-control:after{background:0 0;border-bottom:2px solid 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