:root{color:#172033;background:#eef3f8;font-family:Inter,Microsoft YaHei,Arial,sans-serif;--ink: #121a2a;--muted: #667085;--line: #d9e2ef;--panel: rgba(255, 255, 255, .92);--blue: #2563eb;--cyan: #13b8c5;--green: #16a34a;--gold: #d4a843;--nav: #0b1220}*{box-sizing:border-box}body{margin:0;min-width:320px;background:radial-gradient(circle at 16% -8%,rgba(37,99,235,.18),transparent 34%),radial-gradient(circle at 88% 0%,rgba(19,184,197,.16),transparent 28%),linear-gradient(180deg,#eef3f8,#f7f9fc 42%,#eef3f8)}button,input,textarea{font:inherit}button{border:1px solid var(--blue);background:linear-gradient(135deg,#2563eb,#1d4ed8);color:#fff;min-height:38px;padding:0 15px;border-radius:7px;cursor:pointer;font-weight:600;box-shadow:0 8px 18px #2563eb2e}button.secondary{background:#fff;color:#1d4ed8;box-shadow:none}button.secondary.dark{background:transparent;color:#dbeafe;border-color:#dbeafe4d}button.active{background:#fff;border-color:#fff;color:#0b1220;box-shadow:0 8px 20px 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