:root{--iq-paper:oklch(98% .008 85);--iq-ink:oklch(29% .045 218);--iq-muted:oklch(47% .025 218);--iq-line:oklch(88% .018 85);--iq-primary:oklch(35% .065 218);--iq-apricot:oklch(89% .085 68);--iq-blue:oklch(45% .17 259);--iq-surface:oklch(96% .014 85);--iq-radius:22px}body{background:var(--iq-paper);color:var(--iq-ink)}.iq-app,.iq-footer,.iq-header,.iq-practice-page,.iq-start,.iq-width{font-family:Arial,Noto Sans,sans-serif}.iq-width{max-width:1200px;margin-inline:auto;padding-inline:40px}.iq-header{border-bottom:1px solid var(--iq-line);background:var(--iq-paper);position:relative;z-index:30}.iq-header-inner{height:100px;display:flex;align-items:center;justify-content:space-between;gap:24px}.iq-brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none!important;color:var(--iq-ink);font:600 43px/1 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