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/* Evita que linhas de código imponham largura mínima à coluna no celular. */
.lesson-content,.lesson-nav,.hero-copy,.hero-visual{min-width:0}
.lesson-meta{gap:10px;flex-wrap:wrap}
@media(max-width:760px){.lesson-bottom .button{flex:1 1 auto}.terminal-task small{flex-shrink:0}}
@media(max-width:760px){.lesson-layout{grid-template-columns:minmax(0,1fr)}#lesson-buttons{grid-template-columns:repeat(2,minmax(0,1fr))}.lesson-button{min-width:0}.lesson-button>span:nth-child(2){min-width:0}.lesson-number,.lesson-check{flex-shrink:0}}
/* Introduções: leitura independente antes das oito etapas práticas. */
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.intro-grid,.intro-example{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}
.intro-card{min-width:0;border:1px solid var(--line);background:var(--panel2);border-radius:10px;padding:26px}
.intro-symbol{font:600 23px var(--mono);letter-spacing:1px}
.intro-card h3,.intro-example h3,.signup-panel h3{margin:15px 0}
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.intro-link,.intro-source a{color:var(--cyan);font-size:12px;text-decoration:underline;text-underline-offset:4px}
.intro-steps{padding-left:24px;margin:15px 0 0}
.intro-steps>li{padding-left:7px;margin-bottom:18px}
.intro-steps>li::marker{color:var(--lime);font:600 12px var(--mono)}
.intro-steps p{margin:4px 0 0}
.intro-example{margin-top:25px;align-items:start}
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.intro-example>.concepts-card{padding-top:12px}
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.intro-answer summary{padding:12px 16px;cursor:pointer;font-size:12px;color:var(--lime)}
.intro-answer>p{padding:0 16px}
.concept-list{margin:0}
.concept-list>div{display:grid;grid-template-columns:145px minmax(0,1fr);gap:10px;padding:12px 0;border-bottom:1px solid var(--line)}
.concept-list>div:last-child{border:0}
.concept-list dt{color:var(--cyan);font-size:12px}
.concept-list dd{font-size:12px;color:var(--muted);margin:0}
.intro-actions{display:flex;align-items:center;flex-wrap:wrap;gap:20px;margin-top:25px}
.feature-list{padding-left:18px}
.feature-list li{margin:12px 0}
.feature-list li::marker{color:var(--pink)}
.comparison-table{overflow-x:auto}
.comparison-table table{border-collapse:collapse;width:100%;font-size:12px;table-layout:fixed}
.comparison-table th{color:var(--cyan);text-align:left;padding:12px;border-bottom:1px solid var(--line)}
.comparison-table td{padding:12px;border-bottom:1px solid var(--line);vertical-align:top;color:var(--muted)}
.comparison-table th+th,.comparison-table td+td{border-left:1px solid var(--line)}
.signup-panel{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:45px;margin-top:25px;border:1px solid var(--line);border-radius:10px;padding:30px;background:var(--panel2)}
.signup-heading .button{margin-top:12px}
.signup-steps{margin-top:0}
.signup-steps>li:last-child{margin-bottom:0}
.intro-source{font-size:11px!important}
.presenting .intro-section{display:none}
@media(max-width:1150px){.topbar .class-label,.topbar .brand-divider{display:none}.topbar nav{gap:17px}.concept-list>div{grid-template-columns:1fr;gap:5px}}
@media(max-width:760px){.topbar{flex-wrap:wrap;gap:15px}.topbar nav{display:flex;order:3;width:100%;justify-content:space-between;gap:8px;font-size:11px}.intro-grid,.intro-example,.signup-panel{grid-template-columns:minmax(0,1fr);gap:20px}.intro-card,.signup-panel{padding:20px}.intro-steps{padding-left:18px}.concept-list>div{grid-template-columns:125px minmax(0,1fr)}.intro-answer pre{white-space:pre-wrap;overflow-wrap:anywhere}}
@media print{.intro-grid,.intro-example,.signup-panel{display:block}.intro-card,.signup-panel{background:white;border:1px solid #ccc;margin:15px 0;padding:15px;break-inside:avoid}.intro-section p,.intro-section li,.intro-section strong,.concept-list dt,.concept-list dd,.comparison-table th,.comparison-table td,.intro-link,.intro-source a{color:#111}.intro-section .section-heading{display:block}.intro-section .outlined-tag,.intro-symbol,.intro-actions{display:none}.intro-section .intro-answer{display:none}.intro-section{break-after:page}}