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.intro-browser-inner>.intro-section-kicker{display:none}.naru-welcome .intro-browser-inner>.intro-section-heading{clip-path:inset(50%);white-space:nowrap;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.naru-welcome .intro-lesson{border:1px solid var(--welcome-line);box-shadow:none;background:#fff;border-radius:5px}.naru-welcome .intro-lesson-toolbar{color:var(--welcome-muted);border-bottom:1px solid var(--welcome-line);background:#f0f2ee;padding:12px 25px}.naru-welcome .intro-window-controls{display:none}.naru-welcome .intro-lesson-toolbar-left>span:last-child{letter-spacing:.5px;font-size:11px}.naru-welcome .intro-lesson-badge{color:var(--welcome-muted);font:inherit;letter-spacing:0;background:0 0;border:0;padding:0}.naru-welcome .intro-lesson-brief{padding:22px 25px}.naru-welcome .intro-lesson-task-label{color:var(--welcome-muted);font-size:12px}.naru-welcome .intro-lesson-brief h3{letter-spacing:-.5px;margin:7px 0;font-size:19px;font-weight:600;line-height:1.65}.naru-welcome .intro-lesson-brief p{color:var(--welcome-muted);margin:5px 0 0;font-size:13px}.naru-welcome .intro-sample-data,.naru-welcome .intro-condition-form{padding:24px 25px}.naru-welcome .intro-sample-data caption,.naru-welcome .intro-condition-form legend,.naru-welcome .intro-sql-prefix{color:var(--welcome-muted);font-size:12px}.naru-welcome .intro-sample-note{color:var(--welcome-muted);font-size:11px}.naru-welcome .intro-condition-form label{border-color:var(--welcome-line);background:#fff;border-radius:4px}.naru-welcome .intro-condition-form label.is-selected{border-color:var(--welcome-green);background:#edf3ee}.naru-welcome .intro-button.primary{background:var(--welcome-green);border:1px solid var(--welcome-green);color:#fff;border-radius:4px;justify-content:center;align-items:center;gap:15px;min-height:43px;padding:11px 16px;font-size:13px;font-weight:600;display:inline-flex}.naru-welcome .intro-button.primary:disabled{opacity:.45;cursor:not-allowed}.naru-welcome .intro-retry{color:var(--welcome-muted);background:0 0;border:0;align-items:center;gap:7px;padding:10px 0;font-size:12px;display:inline-flex}.naru-welcome .intro-lesson-result{background:#f7f8f5;padding:21px 25px}.naru-welcome .intro-lesson-result.is-correct{background:#edf3ee}.naru-welcome .intro-lesson-result.try-again{background:#f8f3e9}.naru-welcome .intro-text-button{text-underline-offset:4px;align-items:center;gap:8px;text-decoration:underline;display:inline-flex}.naru-welcome .intro-environment-note{color:var(--welcome-muted)}.naru-welcome .intro-environment-note p{font-size:11px}.welcome-readiness{border-block:1px solid var(--welcome-line);margin-bottom:50px}.welcome-readiness>summary{cursor:pointer;justify-content:space-between;align-items:center;gap:20px;padding:23px 0;list-style:none;display:flex}.welcome-readiness>summary::-webkit-details-marker{display:none}.welcome-readiness>summary>span{align-items:center;gap:18px;display:flex}.welcome-readiness summary strong{font-size:14px;font-weight:600}.welcome-readiness summary span span{color:var(--welcome-muted);font-size:12px}.welcome-readiness[open]>summary>svg{transform:rotate(180deg)}.naru-welcome .naru-quiz-section{margin:0 auto 25px;padding:24px 0}.naru-welcome .quiz-card,.naru-welcome .quiz-result-card{box-shadow:none}.welcome-footer{max-width:1200px;color:var(--welcome-muted);align-items:center;gap:25px;margin:0 auto;padding:0 36px 32px;font-size:11px;display:flex}.welcome-footer p{margin:0}.welcome-footer a{align-items:center;gap:8px;margin-left:auto;display:inline-flex}@media (max-width:980px){.welcome-header{gap:32px}.welcome-nav{gap:20px}.welcome-hero{grid-template-columns:1.25fr 1fr;gap:42px}.welcome-how{padding-left:22px}.welcome-track-list{grid-template-columns:repeat(3,minmax(0,1fr));gap:17px}.welcome-track-list a{padding:8px 0 12px}}@media (max-width:720px){.welcome-header{gap:20px;min-height:72px;padding:0 23px;position:relative}.welcome-nav{z-index:10;background:var(--welcome-paper);border-bottom:1px solid var(--welcome-line);padding:13px 23px;display:none;position:absolute;top:71px;left:0;right:0}.welcome-nav.is-open{flex-direction:column;align-items:stretch;gap:0;display:flex}.welcome-nav a,.welcome-nav button{text-align:left;padding:13px 0;font-size:14px}.welcome-header-actions{gap:13px}.welcome-menu-toggle{justify-content:center;align-items:center;display:inline-flex}.welcome-main{padding:0 23px}.welcome-hero{grid-template-columns:1fr;gap:37px;padding:42px 0 33px}.naru-welcome .welcome-hero h1{letter-spacing:-1.8px;font-size:41px;line-height:1.3}.naru-welcome .welcome-eyebrow{margin-bottom:17px;font-size:12px}.naru-welcome .welcome-description{margin-top:20px;font-size:14px}.welcome-actions{gap:21px;margin-top:24px}.welcome-how{border-left:0;border-top:1px solid var(--welcome-line);padding:21px 0 0}.naru-welcome .welcome-how h2{margin-bottom:9px;font-size:14px}.welcome-how li{padding:13px 0}.welcome-how li:last-child{padding-bottom:0}.naru-welcome .welcome-how h3{font-size:13px}.naru-welcome .welcome-how p{margin-top:3px}.welcome-tracks{padding:25px 0 29px}.welcome-section-title{gap:15px;margin-bottom:15px}.naru-welcome .welcome-section-title h2{font-size:16px}.welcome-track-list{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px 20px}.welcome-track-list strong{font-size:14px}.welcome-preview{padding:28px 0}.welcome-preview>.welcome-section-title{flex-direction:column;align-items:flex-start;gap:10px}.welcome-preview-note{font-size:11px}.naru-welcome .intro-lesson-toolbar{padding:12px 17px}.naru-welcome .intro-lesson-brief{padding:19px 17px}.naru-welcome .intro-lesson-brief h3{font-size:17px}.naru-welcome .intro-sample-data,.naru-welcome .intro-condition-form,.naru-welcome .intro-lesson-result{padding:20px 17px}.naru-welcome .intro-environment-note a{margin-left:30px}.welcome-readiness>summary{padding:20px 0}.welcome-readiness>summary>span{flex-direction:column;align-items:flex-start;gap:6px}.welcome-readiness{margin-bottom:30px}.welcome-footer{flex-wrap:wrap;gap:12px 16px;padding:0 23px 27px}.welcome-footer p{order:2;width:100%}}@media (max-width:380px){.welcome-header,.welcome-main{padding-inline:18px}.welcome-header-actions{gap:7px}.welcome-languages{gap:5px}.naru-welcome .welcome-hero h1{font-size:36px}.welcome-actions{gap:14px}.naru-welcome .welcome-primary,.naru-welcome .welcome-secondary{font-size:12px}.naru-welcome .welcome-primary{gap:13px;padding-inline:14px}}