#tutorial-start {
    margin-top: 12px;
    padding: 7px 12px;
    border: 1px solid #d9cdef;
    border-radius: 8px;
    background: #f5effc;
    color: #4d3993;
    font-size: 14px;
    font-weight: 650;
    cursor: pointer;
    text-decoration: none;
}

#tutorial-start[hidden], .tutorial[hidden], .tutorial [hidden], .tutorial-detail[hidden] { display: none !important; }
.tutorial-active {
    display: grid;
    grid-template-columns: minmax(0, 800px) minmax(270px, 310px);
    gap: 16px;
}
.tutorial-active .container {
    min-width: 0;
    height: calc(100dvh - 40px);
    margin: 0;
}
.tutorial {
    min-width: 0;
    padding: 14px 16px;
    border: 1px solid #d9cdef;
    border-left: 4px solid #6942b8;
    border-radius: 10px;
    background: #fbf8ff;
    color: #2c2242;
    text-align: left;
}
.tutorial-header, .tutorial-controls { display: flex; align-items: center; flex-wrap: wrap; gap: 6px; }
.tutorial-header { justify-content: space-between; }
.tutorial-step { margin: 0; color: #573991; font-size: 13px; font-weight: 700; }
.tutorial h2 { margin: 4px 0; font-size: clamp(18px, 3vw, 24px); line-height: 1.2; }
.tutorial h2:focus { outline: none; }
.tutorial #tutorial-caption { margin: 4px 0 8px; line-height: 1.4; }
.tutorial-note { margin: 6px 0 8px; color: #5a4a70; font-size: 13px; }
.tutorial button, .tutorial-controls a {
    padding: 5px 9px;
    border: 1px solid #d9cdef;
    border-radius: 6px;
    background: white;
    color: #4d327d;
    font: inherit;
    font-size: 13px;
    text-decoration: none;
    cursor: pointer;
}
.tutorial button:disabled { opacity: .55; cursor: default; }
.tutorial button:focus-visible, .tutorial-controls a:focus-visible, #tutorial-start:focus-visible {
    outline: 3px solid #6942b8;
    outline-offset: 2px;
}
.tutorial #tutorial-next { background: #6040a5; color: white; }
.tutorial #tutorial-fields { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); margin: 8px 0; }
.tutorial #tutorial-fields button { padding-inline: 6px; font-size: 12px; }
.tutorial #tutorial-fields [aria-pressed="true"] {
    border-color: #6942b8;
    background: #eee5fc;
    color: #392465;
}
.monaco-editor .tutorial-config-line {
    background: #eee5fc;
    box-shadow: inset 3px 0 #7953bd;
}
.tutorial progress { width: 100%; height: 5px; margin-top: 6px; accent-color: #6942b8; }
.tutorial-active .tabs { margin-bottom: 12px; }
.tutorial-active .tab-btn { min-width: 0; padding-inline: 8px; }
.tutorial-active .header { margin-bottom: 13px; }
.tutorial-focus { outline: 2px solid #7953bd; outline-offset: 3px; scroll-margin-block: 5px; }
.tutorial-autoplay #recaptcha-json, .tutorial-autoplay #recaptcha-multimodal,
.tutorial-autoplay .monaco-editor .iPadShowKeyboard,
.tutorial-autoplay #live-log-preview { display: none; }
.tutorial-detail { margin-top: 14px; padding: 12px; border: 1px solid #d9cdef; border-radius: 10px; background: #fff; text-align: left; }
.tutorial-detail h3 { margin: 0 0 8px; color: #342651; font-size: 17px; }
.tutorial-detail p { margin: 6px 0; line-height: 1.4; }
.tutorial-detail figure { margin: 8px 0; }
.tutorial-detail img { display: block; width: 100%; height: auto; }
.tutorial-detail figcaption { margin-top: 5px; color: #5a4a70; font-size: 13px; }
.tutorial-fit-json { margin: 8px 0; padding: 10px; background: #f6f1fb; border-radius: 6px; white-space: pre-wrap; overflow-wrap: anywhere; }
.tutorial-fit-json .tutorial-config-line { background: #eee5fc; }
.tutorial-detail p code { overflow-wrap: anywhere; }
#tutorial-sketch { margin-inline: 0; }
.tutorial-sketch-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 10px;
}
.tutorial-sketch-grid img {
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
    object-position: top;
}
#tutorial-object-sketch img { object-fit: contain; }
.tutorial-active .download-container, .tutorial-active .progress-container { animation: none; }
.tutorial-charts { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
.tutorial-charts svg { display: block; width: 100%; height: auto; }
.tutorial-charts text { fill: #514662; font-size: 12px; }
.tutorial-charts rect { fill: #6b43ad; }
.tutorial-charts figure + figure rect { fill: #198273; }
.tutorial-charts polyline { fill: none; stroke: #352c42; stroke-width: 2; stroke-dasharray: 4 3; }
.tutorial-trace { display: grid; gap: 8px; margin: 10px 0; }
.tutorial-trace > div { padding: 8px 10px; border-radius: 8px; background: #f6f1fb; }
.tutorial-trace dt { font-weight: 700; }
.tutorial-trace dd { margin: 3px 0 0; overflow-wrap: anywhere; }
.tutorial-trace code { color: #392465; }
@media (max-width: 840px) {
    .tutorial-active {
        grid-template-columns: minmax(0, 800px);
        grid-template-rows: auto minmax(0, 1fr);
        height: 100dvh;
        min-height: 540px;
        gap: 8px;
    }
    .tutorial-active .container { grid-row: 2; height: 100%; min-height: 0; }
    .tutorial { grid-row: 1; padding: 9px 10px; font-size: 13px; }
    .tutorial h2 { font-size: 18px; }
}
@media (max-width: 480px) {
    .tutorial-sketch-grid { grid-template-columns: 1fr; }
    .tutorial-charts { grid-template-columns: 1fr; }
}