html,
body {
    min-height: 100%;
}

body {
    margin: 0;
    font-family: system-ui, Arial, sans-serif;
    color: #0f172a;
    background:
        radial-gradient(circle at top left, rgba(99, 102, 241, 0.18), transparent 32%),
        radial-gradient(circle at top right, rgba(14, 165, 233, 0.16), transparent 28%),
        linear-gradient(180deg, #f8fbff 0%, #eef3f8 100%);
}

.tutorial-page {
    width: 100%;
    padding: 28px 0 36px;
    box-sizing: border-box;
}

.tutorial-shell {
    width: min(1120px, calc(100% - 32px));
    margin: 0 auto;
    padding: clamp(18px, 3vw, 32px);
    border-radius: 30px;
    background: rgba(255, 255, 255, 0.92);
    border: 1px solid rgba(148, 163, 184, 0.24);
    box-shadow: 0 28px 64px rgba(15, 23, 42, 0.12);
    box-sizing: border-box;
}

.tutorial-page-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 24px;
}

.tutorial-kicker {
    margin: 0 0 8px;
    color: #4338ca;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.tutorial-page-header h1 {
    margin: 0;
    font-size: clamp(1.8rem, 3vw, 2.7rem);
    line-height: 1.1;
}

.tutorial-intro {
    margin: 12px 0 0;
    max-width: 62ch;
    color: #475569;
    font-size: 1rem;
    line-height: 1.6;
}

.embedded-close-btn,
.tutorial-nav-btn {
    border: none;
    border-radius: 999px;
    padding: 12px 18px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.embedded-close-btn {
    background: #e2e8f0;
    color: #1e293b;
}

.embedded-close-btn:hover,
.tutorial-nav-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 12px 24px rgba(15, 23, 42, 0.08);
}

.tutorial-stage {
    overflow: hidden;
    border-radius: 26px;
    background: linear-gradient(135deg, #eff6ff 0%, #f8fafc 100%);
    border: 1px solid rgba(148, 163, 184, 0.2);
    transition: height 0.35s ease;
}

.tutorial-track {
    display: flex;
    width: 100%;
    align-items: flex-start;
    transition: transform 0.35s ease;
}

.tutorial-slide {
    min-width: 100%;
    display: grid;
    grid-template-columns: minmax(280px, 1.05fr) minmax(260px, 0.95fr);
    gap: clamp(16px, 2.2vw, 28px);
    align-items: center;
    padding: clamp(22px, 4vw, 38px);
    box-sizing: border-box;
}

.tutorial-visual-card {
    padding: clamp(14px, 2vw, 20px);
    border-radius: 24px;
    background: linear-gradient(180deg, #ffffff 0%, #eef4ff 100%);
    box-shadow: 0 18px 36px rgba(15, 23, 42, 0.08);
}

.tutorial-visual-card img {
    display: block;
    width: 100%;
    height: auto;
    border-radius: 18px;
}

.tutorial-copy {
    max-width: 520px;
}

.tutorial-step {
    margin: 0 0 10px;
    color: #2563eb;
    font-size: 0.9rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.tutorial-copy h2 {
    margin: 0;
    font-size: clamp(1.5rem, 2.3vw, 2.2rem);
    line-height: 1.15;
}

.tutorial-copy p {
    color: #334155;
    font-size: 1rem;
    line-height: 1.7;
}

.tutorial-points {
    margin: 18px 0 0;
    padding-left: 18px;
    color: #475569;
    line-height: 1.7;
}

.tutorial-controls {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    margin-top: 24px;
}

.tutorial-controls-right {
    display: flex;
    align-items: center;
    gap: 14px;
}

.tutorial-nav-btn {
    background: #e2e8f0;
    color: #1e293b;
}

.tutorial-nav-btn:disabled {
    opacity: 0.55;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.tutorial-nav-btn-primary {
    background: linear-gradient(135deg, #2563eb 0%, #4338ca 100%);
    color: #ffffff;
}

.tutorial-dots {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    flex: 1;
}

.tutorial-dot {
    width: 12px;
    height: 12px;
    padding: 0;
    border: none;
    border-radius: 999px;
    background: rgba(100, 116, 139, 0.35);
    cursor: pointer;
    transition: transform 0.2s ease, background 0.2s ease;
}

.tutorial-dot:hover {
    transform: scale(1.08);
}

.tutorial-dot.is-active {
    width: 32px;
    background: linear-gradient(135deg, #2563eb 0%, #4338ca 100%);
}

.tutorial-status {
    margin: 0;
    min-width: 48px;
    text-align: center;
    color: #475569;
    font-size: 0.95rem;
    font-weight: 600;
}

@media (max-width: 860px) {
    .tutorial-slide {
        display: flex;
        flex-direction: column;
        align-items: stretch;
        justify-content: flex-start;
        gap: 10px;
    }

    .tutorial-copy {
        max-width: none;
        flex: 0 0 auto;
    }

    .tutorial-visual-card {
        flex: 0 0 auto;
    }
}

@media (max-width: 700px) {
    .tutorial-page {
        padding: 18px 0 28px;
    }

    .tutorial-shell {
        width: calc(100% - 20px);
        padding: 16px;
        border-radius: 24px;
    }

    .tutorial-page-header {
        flex-direction: column;
        margin-bottom: 18px;
    }

    .tutorial-slide {
        gap: 8px;
        padding: 14px 14px 18px;
    }

    .tutorial-visual-card {
        padding: 8px;
        border-radius: 18px;
    }

    .tutorial-copy p {
        margin: 8px 0 0;
        line-height: 1.6;
    }

    .tutorial-points {
        margin-top: 8px;
    }

    .tutorial-controls {
        flex-direction: column;
        align-items: stretch;
    }

    .tutorial-dots {
        order: -1;
    }

    .tutorial-controls-right {
        width: 100%;
        justify-content: space-between;
    }

    .tutorial-nav-btn,
    .embedded-close-btn {
        width: 100%;
    }
}

@media (prefers-reduced-motion: reduce) {

    .embedded-close-btn,
    .tutorial-nav-btn,
    .tutorial-stage,
    .tutorial-track,
    .tutorial-dot {
        transition: none;
    }
}