:root{color-scheme:light;--ink:#17294a;--text:#253650;--muted:#68768b;--line:#e0e6ef;--blue:#2155d6;--blue-soft:#eff4ff;--gold:#d6b577;--bg:#f4f6fa;--radius:14px;font-family:Inter,"Microsoft YaHei","PingFang SC",Arial,sans-serif;font-size:16px}
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@media(min-width:1450px){.survey-layout{gap:70px;grid-template-columns:320px minmax(0,1fr)}}
@media(max-width:1020px){.survey-layout{grid-template-columns:250px minmax(0,1fr);gap:30px;padding-inline:24px}.intro h1{font-size:1.8rem}.form-section{padding:24px}.choice-grid.three{grid-template-columns:1fr}.region-grid{grid-template-columns:1fr}.login-intro{padding:90px 40px}.login-intro h1{font-size:2rem}}
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