.demo-hero {
    position: relative;
    overflow: hidden;
    background: var(--color-white);
}

.demo-hero-background {
    position: absolute;
    inset: 0;
    pointer-events: none;
    background:
        radial-gradient(52% 46% at 12% -4%, rgba(126, 217, 87, 0.16), transparent 60%),
        radial-gradient(42% 40% at 96% 100%, rgba(19, 181, 213, 0.14), transparent 60%);
}

.demo-hero-grid {
    position: relative;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 56px;
    align-items: center;
    padding-top: 70px;
    padding-bottom: 100px;
}

.demo-heading {
    margin: 0 0 18px;
    color: var(--color-ink);
    font-size: clamp(28px, 6vw, 44px);
    font-weight: var(--font-weight-black);
    line-height: 1.1;
    letter-spacing: -0.03em;
}

.demo-text {
    max-width: 460px;
    margin: 0 0 32px;
    color: var(--color-ink-secondary);
    font-size: 17.5px;
    line-height: 1.6;
}

.demo-photo {
    overflow: hidden;
    height: 340px;
    margin-bottom: 22px;
    border-radius: 22px;
    box-shadow: var(--shadow-panel);
}

.demo-photo img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center 25%;
}

.demo-intro-caption {
    display: flex;
    align-items: center;
    gap: 12px;
}

.demo-intro-caption-dot {
    width: 8px;
    height: 8px;
    flex: none;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-green), var(--color-teal));
}

.demo-intro-caption p {
    margin: 0;
    color: var(--color-muted);
    font-size: 14px;
}

.demo-card {
    position: relative;
    overflow: hidden;
    min-height: 520px;
    padding: 40px;
    background: var(--color-white);
    border: 1px solid var(--color-line);
    border-radius: 24px;
    box-shadow: 0 24px 60px rgba(12, 34, 38, 0.12);
}

.demo-card-heading {
    margin: 0 0 24px;
    color: var(--color-ink);
    font-size: 24px;
    font-weight: var(--font-weight-black);
    letter-spacing: -0.02em;
}

.demo-success {
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    min-height: 440px;
    gap: 18px;
    text-align: center;
}

.demo-success.is-visible {
    display: flex;
}

.demo-success-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--color-green), var(--color-teal));
    border-radius: 50%;
    box-shadow: 0 10px 26px rgba(19, 181, 213, 0.3);
}

.demo-success-heading {
    margin: 0;
    color: var(--color-ink);
    font-size: 26px;
    font-weight: var(--font-weight-black);
    letter-spacing: -0.02em;
}

.demo-success-text {
    max-width: 340px;
    margin: 0;
    color: var(--color-ink-secondary);
    font-size: 15.5px;
    line-height: 1.6;
}

.demo-success-reset {
    margin-top: 6px;
    color: var(--color-teal);
    font-size: 14px;
    font-weight: var(--font-weight-bold);
}

#demo-form.is-hidden {
    display: none;
}

@media (max-width: 900px) {
    .demo-hero-grid {
        grid-template-columns: 1fr;
        padding-top: 40px;
        padding-bottom: 56px;
    }

    .demo-card {
        min-height: 0;
        padding: 28px;
    }
}

@media (max-width: 480px) {
    .demo-photo {
        height: 220px;
    }

    .demo-card {
        padding: 22px 18px;
    }
}